Coating film transfer tool

Abstract

A coating film transfer tool in which a rotational torque with the least variability may be generated without being affected by a surface state of a resilient body may include: a paying-out core having a coating film transfer tape wound thereon; and a rewinding core that rewinds the coating film transfer tape after use. The paying-out core and the rewinding core are interlocked via a power transmission mechanism in a case. The transmission mechanism generates a rotational torque by a frictional force on a sliding surface between components, by using a restoring force of a resilient body. The resilient body is configured to rotate integrally with a component A that comes into contact with one end of the resilient body and a component B that comes into contact with the other end.

Claims

1. An automatically winding type coating film transfer tool comprising: a paying-out core having a coating film transfer tape wound thereon; and a rewinding core configured to rewind the coating film transfer tape after use, the paying-out core and the rewinding core being interlocked via a power transmission mechanism in a case, the power transmission mechanism having a first locking mechanism and a second locking mechanism; wherein the power transmission mechanism is configured to generate a rotational torque of the rewinding core or of the paying-out core by a frictional force generated on a sliding surface using a restoring force of a resilient body; and wherein the resilient body, a first component of the power transmission mechanism that comes into contact with one end of the resilient body, and a second component of the power transmission mechanism that comes into contact with another end of the resilient body are configured to rotate integrally by way of the first and second locking mechanisms being locked together in a form fit connection.

2. The coating film transfer tool according to claim 1, wherein the resilient body is a compression spring.

3. The coating film transfer tool according to claim 1, wherein a portion of the rotational torque is generated by a frictional force on a sliding surface between a third component and the first component, wherein the third component is disposed on an opposite side of the first component with respect to the resilient body.

4. The coating film transfer tool according to claim 1, wherein a portion of the rotational torque is generated by a frictional force on a sliding surface between a fourth component and the second component, wherein the fourth component is disposed on an opposite side of the second component with respect to the resilient body.

5. The coating film transfer tool according to claim 4, wherein the second component comprises an annular spacer, the first component comprises an annular resilient body stopper, and the fourth component comprises a paying-out core gear; wherein the annular spacer, the resilient body, and the annular resilient body stopper are fitted in sequence on a cylindrical shaft of the paying-out core gear and are retained by a locking portion at an end of the shaft; wherein the shaft of the paying-out core gear is rotatably fitted on a support shaft projecting inward from the case; and wherein the spacer and the resilient body and the resilient body stopper rotate integrally, such that at least a part of the rotational torque of the rewinding core is caused by frictional forces generated on a sliding surface between the spacer and the paying-out core gear and on a sliding surface between the resilient body stopper and the paying-out core gear and the locking portion thereof.

6. The coating film transfer tool according to claim 5, wherein the annular resilient body stopper includes rib-shaped locking portions on an outer peripheral surface thereof, and the paying-out core includes, on an inner peripheral surface thereof, locked portions configured to be locked by the rib-shaped locking portions.

7. The coating film transfer tool according to claim 1, wherein the first locking mechanism comprises an engagement piece and the second locking mechanism comprises a cutaway portion.

8. The coating film transfer tool according to claim 7, wherein the form fit connection comprises a keyed connection between the engagement piece and the cutaway portion.

Description

BRIEF DESCRIPTION OF DRAWINGS

(1) FIG. 1 illustrates Example 1 of the present invention, and is a vertical cross-sectional view taken along a center axis position of a paying-out core, which corresponds to FIG. 12.

(2) FIG. 2 is an exploded perspective view illustrating a principal portion of FIG. 1 in a reduced scale.

(3) FIG. 3 illustrates Example 2 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12.

(4) FIG. 4 is an exploded perspective view illustrating a principal portion of FIG. 3 in a reduced scale.

(5) FIG. 5 illustrates Example 3 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12.

(6) FIG. 6 is an exploded perspective view illustrating a principal portion of FIG. 5 in a reduced scale.

(7) FIG. 7 illustrates Example 4 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12.

(8) FIG. 8 is an exploded perspective view illustrating a principal portion of FIG. 7 in a reduced scale.

(9) FIG. 9 illustrates Example 5 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12.

(10) FIG. 10 is an exploded perspective view illustrating a principal portion of FIG. 9 in a reduced scale.

(11) FIG. 11 is a front view of a generally available coating film transfer tool of the related art.

(12) FIG. 12 is a vertical cross sectional view taken along the line XII-XII in FIG. 11.

(13) FIG. 13 is an exploded perspective view illustrating a principal portion of FIG. 12 in a reduced scale.

DETAILED DESCRIPTION OF THE DRAWINGS

(14) Embodiments of the present invention in which a compression spring is used as a resilient body will be described below. To achieve full effect of the present invention, the compression spring is the most preferable as the resilient body. However the resilient body which may be used in the present invention is not limited to the compression spring, and any suitable resilient bodies such as an O-ring may be used.

(15) The present invention provides an automatically winding type coating film transfer tool in which a paying-out core having a coating film transfer tape wound thereon and a rewinding core that rewinds the coating film transfer tape after use are interlocked via a power transmission mechanism in a case. A rotational torque of the rewinding core or the paying-out core is generated by a frictional force generating on a sliding surface between components by using a restoring force of a resilient body, characterized in that the resilient body is configured to rotate integrally with a component A that comes into contact with one end of the resilient body and a component B that comes into contact with the other end.

(16) Specific, illustrative forms of the frictional force that generates the rotational torque will now be described: A first mode may be used, in which a frictional force generating on a sliding surface between a C component, which is positioned on an opposite side of the resilient body with respect to the A component positioned in-between, and the A component by sliding contact therebetween serves as at least part of the rotational torque of the rewinding core or of the paying-out core. Alternatively, a second mode may be used, in which a frictional force generating on a sliding surface between a D component, which is positioned on an opposite side of the resilient body with respect to the B component positioned in-between, and the B component by sliding contact therebetween serves as at least part of the rotational torque of the rewinding core or of the paying-out core.

(17) Specifics of the A to D components depend on the embodiment. For example, the A component may include a spacer, a resilient body stopper, and/or a rewinding button. For example, the B component may include a spacer, a small or reduced diameter portion of the paying-out core, and/or a paying-out core gear. For example, the C component may include the resilient body stopper and/or a locking portion of the paying-out core gear. For example, the D component may include the paying-out core gear and/or the like. Detailed description will be given below.

EXAMPLE 1

(18) FIG. 1 illustrates Example 1 of the present invention, and is a vertical cross-sectional view taken along a center axis position of the paying-out core, which corresponds to FIG. 12. FIG. 2 is an exploded perspective view of a principal portion of FIG. 1 in a reduced scale.

(19) As illustrated in FIG. 2, a paying-out core gear 1 (B component) includes a cylindrical rotating shaft 1b having a locking portion 1a at an end thereof. As illustrated in FIG. 1, a compression spring 2 (as the resilient body), an annular spacer 3 (A component), and a resilient body stopper 4 (C component) are fitted in sequence on the rotating shaft 1b, and are retained by the locking portion 1a. The rotating shaft 1b of the paying-out core gear 1 is rotatably fitted onto a support shaft 6 projecting inward from a case 5.

(20) The annular spacer 3 is increased in diameter at an upper end thereof, and the compression spring 2 is interposed between a lower surface of a large diameter portion 3a and an upper surface of the paying-out core gear 1. A side surface of the rotating shaft 1b of the paying-out core gear 1 is partly cut away or notched, and an engagement piece 3b which is locked by a cutaway portion 1c is provided on an annular inner wall of the spacer 3. The paying-out core gear 1, the compression spring 2, and the spacer 3 rotate integrally by way of the engagement piece 3b being keyed to the cutaway portion 1c.

(21) In addition, the annular resilient body stopper 4 is provided with rib-shaped locking portions 4a on an outer peripheral surface thereof. Locked portions 7a, which are to be interlocked by the rib-shaped locking portions 4a, are provided on an inner peripheral surface of a paying-out core 7. Accordingly, the resilient body stopper 4 rotates integrally with the paying-out core 7 by way of the rib-shaped locking portions 4a interlocked with the locked portions 7a.

(22) Therefore, the rotational torque of the rewinding core via the power transmission mechanism includes frictional forces generated by paying out the coating film transfer tape from the paying-out core 7 via the transfer operation. These frictional forces include (1) on a sliding surface (dotted circle A) between the resilient body stopper 4 (C component) that rotates integrally with the paying-out core 7 and the spacer 3 (A component); (2) on a sliding surface (dotted circle B) between the resilient body stopper 4 and the locking portion 1a of the paying-out core 7; and (3) on a sliding surface (dotted circle C) between the paying-out core 7 and the paying-out core gear 1.

(23) In this specification, the expression “rotates integrally” includes a structure that rotates basically integrally even though a small amount of relative rotation is present.

EXAMPLE 2

(24) FIG. 3 illustrates Example 2 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12. FIG. 4 is an exploded perspective view of a principal portion of FIG. 3 in a reduced scale.

(25) As illustrated in FIG. 4, a paying-out core gear 8 (D component) includes a cylindrical rotating shaft 8b having a locking portion 8a at an end thereof. As illustrated in FIG. 3, an annular spacer 9 (B component), a compression spring 10, and an annular resilient body stopper 11 (A component) are fitted in sequence on the rotating shaft 8b, and are retained by the locking portion 8a. These components are rotatably fitted to a support shaft 13 projecting inward from a case 12.

(26) The spacer 9 is provided with a pair of rising pieces 9a protruding from an upper surface thereof, and the rising pieces 9a separate the upper surface into an inner upper surface 9b and an outer upper surface 9c. The annular resilient body stopper 11 is increased in diameter at an upper end thereof, and the compression spring 10 is interposed between a lower surface of a large diameter portion 11a and the inner upper surface 9b of the spacer 9.

(27) The spacer 9 is provided with a notch 9d at an upper end of each rising piece 9a. Locked portions 14a provided on an inner peripheral surface of a paying-out core 14 are interlocked by the notches 9d, so that the spacer 9 and the paying-out core 14 rotate integrally. The annular resilient body stopper 11 is also provided with rib-shaped locking portions 11b on an outer peripheral surface thereof, and the rib-shaped locking portions 11b interlock with the locked portions 14a provided on the inner peripheral surface of the paying-out core 14. Therefore, the resilient body stopper 11 rotates integrally with the paying-out core 14. Accordingly, the spacer 9 (B component), the compression spring 10, the resilient body stopper 11, and the paying-out core 14 rotate integrally.

(28) Therefore, the rotational torque of the rewinding core via the power transmission mechanism includes frictional forces generated by paying out a coating film transfer tape 15 wound around the paying-out core 14 via the transfer operation. These frictional forces include: (1) on a sliding surface (dotted circle D) between the spacer 9 and the paying-out core gear 8; and (2) on a sliding surface (dotted circle E) between the resilient body stopper 11 and the locking portion 8a (C component) of the paying-out core gear 8.

EXAMPLE 3

(29) FIG. 5 illustrates Example 3 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12. FIG. 6 is an exploded perspective view of a principal portion of FIG. 5 in a reduced scale.

(30) As illustrated in FIG. 6, a paying-out core gear 16 (D component) includes a cylindrical rotating shaft 16b having a locking portion 16a at an end thereof. As illustrated in FIG. 5, a paying-out core 17, a compression spring 18, and an annular resilient body stopper 19 (A component) are fitted in sequence on the rotating shaft 16b and are retained by the locking portion 16a. The rotating shaft 16b of the paying-out core gear 16 is rotatably fitted to a support shaft 21 projecting inward from a case 20.

(31) The paying-out core 17 is reduced in diameter at an end facing the paying-out core gear 16, and the compression spring 18 is interposed between an upper surface of a small diameter portion 17a (B component) and a lower surface of the resilient body stopper 19.

(32) The annular resilient body stopper 19 is also provided with rib-shaped locking portions 19a on an outer peripheral surface thereof, and the paying-out core 17 is provided with locked portions 17b to be interlocked by the rib-shaped locking portions 19a on an inner peripheral surface thereof. The rib-shaped locking portions 19a interlock with the locked portions 17b, so that the resilient body stopper 19 rotates integrally with the paying-out core 17.

(33) Therefore, the resilient body stopper 19, the compression spring 18, and the paying-out core 17 rotate integrally.

(34) Therefore, the rotational torque of the rewinding core via the power transmission mechanism includes frictional forces generated by paying out a coating film transfer tape 22 wound around the paying-out core 17 via the transfer operation. These frictional forces include: (1) on a sliding surface (dotted circle F) between the resilient body stopper 19 that rotates integrally with the paying-out core 17 and the locking portion 16a (C component) of the paying-out core gear 16; and (2) on a sliding surface (dotted circle G) between the paying-out core 17 and the paying-out core gear 16 (D component).

EXAMPLE 4

(35) FIG. 7 illustrates Example 4 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12. FIG. 8 is an exploded perspective view of a principal portion of FIG. 7 in a reduced scale.

(36) As illustrated in FIG. 8, a rewinding button 23 (A component) includes a resilient locking piece 23b having a locking portion 23a at an end thereof. As illustrated in FIG. 7, a compression spring 24, a paying-out core 25, and a paying-out core gear 26 (D component) are fitted in sequence on the resilient locking piece 23b and are retained by the locking portion 23a. The resilient locking piece 23b of the rewinding button 23 is rotatably fitted to a support shaft 28 projecting inward from a case 27.

(37) The paying-out core 25 is reduced in diameter at an end facing the paying-out core gear 26, and the compression spring 24 is interposed between an upper surface of the small diameter portion (B component) and a lower surface of a head portion 23c of the rewinding button 23. The rewinding button 23 is also provided with rib-shaped locking portions 23d on an outer peripheral surface of the head portion 23c, and the paying-out core 25 is provided with locked portions 25b where the rib-shaped locking portions 23d lock on an inner peripheral surface. With the rib-shaped locking portions 23d interlocking with the locked portions 25b, the rewinding button 23, the compression spring 24, and the paying-out core 25 rotate integrally.

(38) Therefore, the rotational torque of the rewinding core via the power transmission mechanism includes frictional forces generated by paying out a coating film transfer tape 29 wound around the paying-out core 25 via the transfer operation. These frictional forces include: (1) on a sliding surface (dotted circle H) between the paying-out core 25 and the paying-out core gear 26; and (2) on a sliding surface (dotted circle I) between the paying-out core gear 26 and the locking portion 23a of the resilient locking piece 23b of the rewinding button 23.

(39) The rewinding button 23 has been illustrated here thus far. However, a stop button may be provided, with the resilient locking piece 23b having the locking portion 23a in the same manner as the rewinding button 23 without having the winding function.

EXAMPLE 5

(40) FIG. 9 illustrates Example 5 of the present invention, and is a vertical cross-sectional view taken along the center axis position of the paying-out core, which corresponds to FIG. 12. FIG. 10 is an exploded perspective view of a principal portion of FIG. 9 in a reduced scale.

(41) As illustrated in FIG. 10, a paying-out core gear 30 (B component) includes a cylindrical rotating shaft 30b having a locking portion 30a at an end thereof. As illustrated in FIG. 9, a compression spring 31, an annular first spacer 32 (A component), an annular resilient body stopper 33 (C component), and an annular second spacer 34 are fitted in sequence on the rotating shaft 30b and are retained by the locking portion 30a. The rotating shaft 30b of the paying-out core gear 30 is rotatably fitted to a support shaft 36 projecting inward from a case 35.

(42) The annular resilient body stopper 33 is also provided with rib-shaped locking portions 33a on an outer peripheral surface thereof, and a paying-out core 37 is provided with locked portions 37a to be interlocked by the rib-shaped locking portion 33a on an inner peripheral surface thereof. The rib-shaped locking portions 33a interlock with the locked portions 37a, so that the resilient body stopper 33 rotates integrally with the paying-out core 37.

(43) An upper half of an outer peripheral surface of the rotating shaft 30b of the paying-out core gear 30 is cut out substantially equidistantly to form planar sections 30c at four positions, and inner holes 32a, 34a of the first spacer 32 and the second spacer 34 have a square shape having arcuate corners (in plan view). The first spacer 32 and the second spacer 34 may be fitted to the rotating shaft 30b of the paying-out core gear 30 so as not to be capable of rotating, whereby the paying-out core gear 30, the compression spring 31, the first spacer 32, and the second spacer 34 rotate integrally.

(44) Therefore, the rotational torque of the rewinding core via the power transmission mechanism includes frictional forces generated by paying out a coating film transfer tape 38 wound around the paying-out core 37 via the transfer operation. These frictional forces include: (1) on a sliding surface (dotted circle J) between the first spacer 32 and the resilient body stopper 33, (2) on a sliding surface (dotted circle K) between the resilient body stopper 33 and the second spacer 34, and (3) on a sliding surface (dotted circle L) between the paying-out core 37 and the paying-out core gear 30.

(45) In contrast to Example 1, two spacers 32, 34 are used in Example 5. Therefore, the rotational torque of the rewinding core may be advantageously adjusted by adjusting upper and lower sliding surfaces of the resilient body stopper 33.

(46) Additional Illustrative Combinations A. An automatically winding type coating film transfer tool comprising: a paying-out core having a coating film transfer tape wound thereon; and a rewinding core that rewinds the coating film transfer tape after use, the paying-out core and the rewinding core being interlocked via a power transmission mechanism in a case and generating a rotational torque of the rewinding core or of the paying-out core by a frictional force generating on a sliding surface between components by using a restoring force of a resilient body,

(47) wherein the resilient body is configured to rotate integrally with a component A that comes into contact with one end of the resilient body and a component B that comes into contact with the other end. B. The coating film transfer tool in accordance with paragraph A, wherein the resilient body is a compression spring. C. The coating film transfer tool in accordance with paragraphs A or B, wherein a frictional force generating on a sliding surface between a C component, which is positioned on an opposite side of the resilient body with respect to the A component positioned in-between, and the A component by sliding contact therebetween serves as at least part of the rotational torque of the rewinding core or of the paying-out core. D. The coating film transfer tool in accordance with paragraphs A to C, wherein a frictional force generating on a sliding surface between a D component, which is positioned on an opposite side of the resilient body with respect to the B component positioned in-between, and the B component by sliding contact therebetween serves as at least part of the rotational torque of the rewinding core or of the paying-out core. E. The coating film transfer tool in accordance with paragraph C, wherein three members of the resilient body, an annular spacer (A component), and an annular resilient body stopper (C component) rotating integrally with the paying-out core are fitted in sequence on a cylindrical rotating shaft of a paying-out core gear (component B) having a locking portion at an end thereof and are retained by the locking portion, the rotational shaft of the paying-out core gear is rotatably fitted on a support shaft projecting inward of the case, and the paying-out core gear and the resilient body and the spacer rotate integrally, so that frictional forces generating on a sliding surface between the spacer and the resilient body stopper and a sliding surface between the resilient body stopper and the locking portion of the paying-out core gear serve as at least part of the rotational torque of the rewinding core via the power transmission mechanism. F. The coating film transfer tool in accordance with paragraph D that quotes in accordance with paragraph C, wherein three members of an annular spacer (B component), the resilient body, and an annular resilient body stopper (A component) rotating integrally with the paying-out core are fitted in sequence on a cylindrical rotating shaft of a paying-out core gear (D component) having a locking portion at an end thereof and are retained by the locking portion, the rotating shaft of the paying-out core gear is rotatably fitted on a support shaft projecting inward of the case, the spacer and the resilient body and the resilient body stopper rotate integrally, so that frictional forces generating on a sliding surface between the spacer and the paying-out core gear and a sliding surface between the resilient body stopper and the paying-out core gear and the locking portion (C component) thereof serve as at least part of the rotational torque of the rewinding core via the power transmission mechanism. G. The coating film transfer tool in accordance with paragraph D that quotes in accordance with paragraph C, wherein three members of a small diameter portion (B component) of the paying-out core, which is reduced in diameter at an end facing a paying-out core gear, the resilient body, and an annular resilient body stopper (A component) are fitted in sequence on a cylindrical rotating shaft of the paying-out core gear (D component) having a locking portion at an end thereof and are retained by the locking portion, the rotating shaft of the paying-out core gear is rotatably fitted on a support shaft projecting inward of the case, the paying-out core and the resilient body and the resilient body stopper rotate integrally, so that frictional forces generating on a sliding surface between the paying-out core and the paying-out core gear (D component) and a sliding surface between the resilient body stopper and of the locking portion (C component) the paying-out core gear serve as at least part of the rotational torque of the rewinding core via the power transmission mechanism. H. The coating film transfer tool in accordance with paragraph D that quotes in accordance with paragraph A or B, wherein three members of the resilient body, a small diameter portion (B component) of the paying-out core, which is reduced in diameter at an end facing a paying-out core gear (D component), and the paying-out core gear are fitted in sequence on a resilient locking piece of a stop button (A component) having a locking portion at an end thereof and are retained by the locking portion, the resilient locking piece of the stop button is rotatably fitted on a support shaft projecting inward of the case, the stop button and the resilient body and the paying-out core rotate integrally, so that frictional forces generating on a sliding surface between the paying-out core and the paying-out core gear and a sliding surface between the paying-out core gear and the locking portion of the resilient locking piece of the stop button serve as at least part of the rotational torque of the rewinding core via the power transmission mechanism. I. The coating film transfer tool in accordance with paragraph C, wherein four members of the resilient body, an annular first spacer (A component), an annular resilient body stopper (C component) rotating integrally with the paying-out core, and an annular second spacer are fitted in sequence on a cylindrical rotating shaft of a paying-out core gear (component B) having a locking portion at an end thereof and are retained by the locking portion, the rotating shaft of the paying-out core gear is rotatably fitted on a support shaft projecting inward of the case, the paying-out core gear and the resilient body, and the first spacer and the second spacer rotate integrally, so that frictional forces generating on a sliding surface between the first spacer and the resilient body stopper and a sliding surface between the resilient body stopper and the second spacer serve as at least part of the rotational torque of the rewinding core via the power transmission mechanism.

(48) Although the representative five embodiments have been described thus far, the present invention is not limited to these embodiments. Only the structure in which component that comes into contact with the resilient body such as the compression spring or the O-ring rotates integrally with the resilient body is essential, and various structures may be employed.

REFERENCE SIGNS LIST

(49) 1 paying-out core gear 1a locking portion 1b rotating shaft 1c nocked portion 2 compression spring 3 spacer 3a large diameter portion 3b locked piece 4 resilient body stopper 4a rib-shaped locking portion 5 case 6 support shaft 7 paying-out core 7a locked portion 8 paying-out core gear 8a locking portion 8b rotating shaft 9 spacer 9a rising piece 9b inner upper surface 9c outer upper surface 9d notch 10 compression spring 11 resilient body stopper 11a large diameter portion 11b rib-shaped locking portion 12 case 13 support shaft 14 paying-out core 14a locked portion 15 coating film transfer tape 16 paying-out core gear 16a locking portion 16b rotating shaft 17 paying-out core 17a small diameter portion 17b locked portion 18 compression spring 19 resilient body stopper 19a rib-shaped locking portion 20 case 21 support shaft 22 coating film transfer tape 23 rewinding button 23a locking portion 23b resilient locking piece 23c head portion 23d rib-shaped locking portion 24 compression spring 25 paying-out core 25a small diameter portion 25b locked portion 26 paying-out core gear 27 case 28 support shaft 29 coating film transfer tape 30 paying-out core gear 30a locking portion 30b rotating shaft 30c planar section 31 compression spring 32 first spacer 32a inner hole 33 resilient body stopper 33a rib-shaped locking portion 34 second spacer 34a inner hole 35 case 36 support shaft 37 paying-out core 37a locked portion 38 coating film transfer tape 100 coating film transfer tool 101 locking portion 102 resilient locking piece 103 rewinding button 104 compression spring 105 paying-out core gear 106 case 107 support shaft 108 paying-out core