MANUAL WINDING DEVICE

Abstract

A manual winding device comprises a wire bracket, a clamp, a winder, and a tension maintainer. The wire bracket supplies wire, while the clamp holds it in place. The winder, adjacent to the clamp, includes a driving mechanism and a coil former holding unit. The coil former holding unit is configured to mount a coil former. The driving mechanism is configured to drive the coil former holding unit to rotate, winding the wire onto the coil former. The tension maintainer, located between the clamp and the winder, includes a sliding base, a sliding block, and four connecting rods forming a quadrilateral. The sliding block is movably disposed on the sliding base. Two opposite connection points are pivotally mounted on the base and sliding block, while the other two points each hold a pulley around which the wire passes. The tension maintainer ensures the wire's tension is maintained during winding.

Claims

1. A manual winding device, comprising: a wire bracket configured for placement of a wire source to supply wire; a clamp positioned adjacent to the wire bracket, wherein the clamp is configured to clamp a portion of the wire; a winder positioned at one side of the clamp, wherein the winder comprises a driving mechanism and a coil former holding unit, the coil former holding unit is configured to mount a coil former, and the driving mechanism is configured to drive the coil former holding unit to rotate, thereby winding the wire onto the coil former; and a tension maintainer positioned between the clamp and the winder, wherein the tension maintainer comprises a sliding base, a sliding block, and four connecting rods, the sliding block is movably mounted on the sliding base, the connecting rods are interconnected to form a quadrilateral, with two opposite connection points pivotally mounted on the sliding base and the sliding block, and the other two connection points each being provided with a pulley, wherein the wire is wound around each pulley, and the tension maintainer is configured to maintain the tension of the wire.

2. The manual winding device according to claim 1, wherein the tension of the wire is related to the angle between the connecting rods and the weight of the sliding block.

3. The manual winding device according to claim 1, wherein the sliding base comprises a base and a sliding rail vertically extending from the base, and at least one tension spring is disposed between the sliding block and the base.

4. The manual winding device according to claim 1, wherein the sliding base comprises a base and a sliding rail vertically extending from the base, and a plurality of mounting holes are arranged along an extending direction of the sliding rail, and a stopper is provided in at least one of the mounting holes.

5. The manual winding device according to claim 1, wherein the connecting rods are interconnected to form a parallelogram, and the lengths of one pair of parallel connecting rods are different from the lengths of the other pair of parallel connecting rods.

6. The manual winding device according to claim 1, wherein when the sliding block moves upward along the sliding base, the distance between the two connection points of the connecting rods with pulleys decreases; and when the sliding block moves downward along the sliding base, the distance between the two connection points of the connecting rods with pulleys increases.

7. The manual winding device according to claim 1, wherein the driving mechanism comprises a worm, a worm gear and a rotating shaft, the worm is connected to a handwheel, the worm meshes with the worm gear, and the rotating shaft is disposed on the worm gear, and the coil former holding unit is installed at one end of the rotating shaft.

8. The manual winding device according to claim 7, wherein the coil former is mounted on one end of the rotating shaft, and the coil former holding unit is inserted into the inner hole of the coil former and is sleeved on the rotating shaft to secure the coil former.

9. The manual winding device according to claim 8, wherein the number of the coil former holding units is plural, and the sizes of the coil former holding units correspond to the inner hole sizes of different coil formers.

10. The manual winding device according to claim 1, further comprising a counter drivingly connected to the winder.

Description

DESCRIPTION OF DRAWINGS

[0016] FIG. 1 is a schematic structural diagram of a manual winding device according to an embodiment of the present invention.

[0017] FIG. 2 and FIG. 3 are schematic diagrams illustrating the operating states of the manual winding device according to an embodiment of the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

[0018] In order to make the above and other objects, features, and advantages of the present invention more comprehensible, preferred embodiments of the present invention will be described in detail below, together with the accompanying drawings. Furthermore, the directional terms used in the present invention, such as up, down, top, bottom, front, back, left, right, inside, outside, side, around, central, horizontal, transverse, vertical, longitudinal, axial, radial, uppermost layer, or lowermost layer, etc., are merely the directions indicated in the attached drawings. Therefore, these directional terms are used for illustrative purposes only and are not intended to limit the scope of the present invention.

[0019] Referring to FIGS. 1 to 3, a manual winding device 1 of the present embodiment mainly comprises a wire bracket 11, a clamp 12, a tension maintainer 13, and a winder 14, which are arranged sequentially along a direction from upstream to downstream. The direction from upstream to downstream refers to the transport direction (wire feeding direction) of a wire W1 to be wound.

[0020] Specifically, the wire bracket 11 is configured to hold wire sources (such as spools of different sizes) that provide a wire W1 to be wound. In one embodiment, the wire bracket 11 is a conical clamping device and is equipped with a handle 111. By rotating the handle 111, the screw mechanism moves the wire bracket 11 forward, allowing wire sources of different sizes to be securely placed on the wire bracket 11, while still allowing the wire sources to rotate freely, thereby avoiding unnecessary friction and tension during winding. The clamp 12 is disposed adjacent to the wire bracket 11 and is configured to clamp a portion of the wire W1 extending between the wire bracket 11 and the winder 14. The clamp 12 primarily provides a clamping force on the wire W1 to generate basic tension in the wire W1, without affecting the feeding of the wire W1. The winder 14 is disposed at one side of the clamp 12 and is configured to wind the wire W1 onto a coil former A1. The tension maintainer 13 is disposed between the clamp 12 and the winder 14 and is configured to maintain the tension of the wire W1 within a specified range during the winding process of the wire W1 onto the coil former A1. In a specific example, when the wire W1 is a thin copper wire of AWG32 (0.2 mm), the tension can be maintained between 0.5N and 1.5N (50 gf to 150 gf); and when the wire W1 is AWG42 (0.064 mm) or smaller, the tension can be maintained between 0.1N and 0.5N (10 gf to 50 gf) by adjusting the setting of the tension maintainer 13.

[0021] As shown in FIG. 1, the winder 14 primarily includes a driving mechanism 141, a handwheel 142 and a coil former holding unit 143. The coil former holding unit 143 is configured to install the coil former A1. The handwheel 142 is configured for a user to control the operation of the driving mechanism 141. The driving mechanism 141 is configured to rotate the coil former holding unit 143 so that the wire W1 can be wound onto the coil former A1. Specifically, the driving mechanism 141 comprises a worm 141a, a worm gear 141b, and a rotating shaft 141c. The handwheel 142 is connected to the worm 141a, the worm 141a meshes with the worm gear 141b, and the rotating shaft 141c is installed on the worm gear 141b. The coil former holding unit 143 is secured at one end of the rotating shaft 141c to hold the coil former A1. Therefore, when the user operates the handwheel 142, the worm 141a rotates, driving the worm gear 141b and rotating shaft 141c, which causes the wire W1 to be wound onto the coil former A1. In one embodiment, the coil former holding unit 143 is configured to be inserted into the inner hole of the coil former A1 and to be sleeved on the rotating shaft 141c, thereby securing the coil former A1. In some embodiments, coil formers A1 of different sizes have different inner hole sizes. Thus, the winder 14 of the present invention may further include multiple coil former holding units 143 of different sizes, enabling the user to select the appropriate one based on the size of the coil former A1. In other embodiments, the manual winding device 1 may further include a counter 15, and the counter 15 is drivingly connected to the winder 14. Specifically, the counter 15 can be connected to the other end of the rotating shaft 141c via transmission components (such as a belt and a pulley) and can be used to record the number of revolutions of the coil former A1.

[0022] As shown in FIG. 1 and FIG. 2, the tension maintainer 13 includes a sliding base 131, a sliding block 132 and four connecting rods (for example, connecting rods 133a, 133b, 134a, and 134b). In one embodiment, the sliding base 131 includes a base 131a and a sliding rail 131b that extends from the base 131a. The sliding block 132 is movably disposed along the sliding rail 131b. The connecting rods 133a, 133b, 134a and 134b are pivotally connected to each other, forming a quadrilateral. A connection point P1 between the connecting rod 133a and the connecting rod 134b is opposite to a connection point P2 between the connecting rod 133b and the connecting rod 134a, and the connection point P1 and the connection point P2 are respectively pivoted on the sliding block 132 and the base 131a. Additionally, a pulley P31 is provided at a connection point P3 between the connecting rod 133a and the connecting rod 134a, and a pulley P41 is provided at a connection point P4 between the connecting rod 133b and the connecting rod 134b. The wire W1 is wound around the pulley P31 and the pulley P41, respectively.

[0023] Thus, when the user operates the winder 14 to feed the wire W1 onto the coil former A1, the wire W1 moves over the pulley P31 and the pulley P41. The tension in the wire W1 causes the angles between the connecting rods to change, which in turn moves the sliding block 132 upwards (as shown in FIG. 3). As the sliding block 132 moves from its position in FIG. 2 to the position in FIG. 3, the distance between connection points P3 and P4 of the connecting rods decreases, which causes the angle between the connecting rods to increase, resulting in a slight reduction in the tension of the wire W1. When the user reverses the operation of the winder 14 to unwind the wire or stops operating the winder 14, the sliding block 132, due to its weight, applies a force on the connecting rods, causing the distance between connection points P3 and P4 to gradually increase. As the angle between the connecting rods decreases, a pulling force is exerted on the wire W1, thereby maintaining its tension. This is beneficial for controlling the pause, rewind adjustment, and wire feeding stability during the winding process, thereby improving winding efficiency and overall winding quality. In other words, the tension of the wire W1 is related to the angle between the connecting rods and the weight of the sliding block. As shown in FIG. 3, when the sliding block moves closer to the upper portion of the sliding rail 131b, the angle between the connecting rods increases and the tension in the wire W1 decreases. Therefore, the winder 14 can be further adapted to different specifications of wire W1 and their required tension by adjusting the angle between the connecting rods and selecting sliding blocks with different weights. In some embodiments, at least one tension spring 135 may be disposed between the sliding block 132 and the base 131a. The tension spring 135 primarily serves to increase the resistance against the upward movement of the sliding block 132, thereby enhancing the tension of the wire W1. In other embodiments, the tension maintainer 13 may include multiple tension springs 135 with different elastic forces, allowing the user to select one or more suitable tension springs 135 to be installed between the sliding block 132 and the base 131a, based on the winding tension requirements.

[0024] As shown in FIG. 2, in some embodiments, the sliding rail 131b includes multiple mounting holes 131b1 arranged along an extending direction of the sliding rail 131b, and at least one of these mounting holes 131b1 is provided with a stopper, such as an upper stopper 131b2 and a lower stopper 131b3. The upper stopper 131b2 and the lower stopper 131b3 are primarily used to limit the stroke of the sliding block 132. For example, an upper stopper 131b2 can be provided above the sliding block 132, and a lower stopper 131b3 can be provided below the sliding block 132 to restrict both the movement distance of the sliding block 132 and the angle between the connecting rods. In some embodiments, when the wire W1 is a copper wire with a diameter of smaller than 0.1 mm, the sliding block 132 is restricted to move only within a short stroke at the upper portion of the sliding rail 131b, thus preventing the wire W1 from breaking due to excessive tension. In a specific example, when the wire W1 is an extremely thin copper wire with a diameter smaller than 0.1 mm, the tension spring 135 may be omitted, and the position of the lower stopper 131b3 can be adjusted upward to the next mounting holes 131b1 in the sliding rail 131b, restricting the stroke of the sliding block 132 to the range between the bottom of the upper stopper 131b2 and the top of the newly positioned lower stopper 131b3. This ensures that the wire W1 maintains appropriate tension and prevents breakage due to excessive tension

[0025] In one embodiment, the quadrilateral formed by the connecting rods 133a, 133b, 134a, and 134b is a parallelogram, with the connecting rods 133a and 133b being parallel to each other, and the connecting rods 134a and 134b being parallel to each other. The lengths of connecting rods 133a and 133b are different from the lengths of connecting rods 134a and 134b. This design ensures that the connection points P3 and P4 are positioned at different vertical levels, preventing the wire W1 from interfering when it winds around pulleys P31 and P41. Specifically, by positioning pulleys P31 and P41 at different levels, the wire W1 can pass smoothly from one pulley to the next without obstruction during the winding process, thus ensuring the stability of the wire during both feeding and unwinding.

[0026] As demonstrated in the aforementioned embodiments of the present invention, the manual winding device primarily utilizes the mechanism design of the tension maintainer's sliding block in combination with the connecting rods to maintain wire tension within a specific range during feeding, unwinding, or stopping. This design allows the operator to feed the wire with one hand while using the other hand to adjust the winding position, thereby enabling efficient and rapid winding operations and enhancing overall winding quality.

[0027] Although the present invention has been described in considerable detail with reference to certain embodiments, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the embodiments described herein. It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from its scope or spirit. In view of the foregoing, it is intended that the present invention covers any modifications and variations, provided they fall within the scope of the following claims.