Pencil sharpener assembly

Abstract

A pencil sharpener assembly comprising a frame and a blade, the blade having an elongated sheet shape, one side of the blade being disposed with a blade edge, the frame being disposed with a pencil chamber, the blade being disposed along an axial direction of the pencil chamber and the blade edge of the blade being located in the pencil chamber, the blade being made of a ceramic material, the frame being disposed with a first positioning groove and a second positioning groove, the first positioning groove and the second positioning groove being oppositely disposed, a first end of the blade being inserted into the first positioning groove, and a second end of the blade being inserted into the second positioning groove. It has the advantages of being applicable to ceramic-made blades and the blade is not easy to fracture.

Claims

1. A pencil sharpener assembly comprising: a frame with an inner chamber, the frame disposed with a first positioning groove and a second positioning groove; an elongated sheet shape blade with a blade edge, the blade being on a conical surface of the inner chamber; the frame comprises a first support plate; and a pencil holder, the inner chamber disposed on the pencil holder and a side portion of the pencil holder penetratingly disposed with a blade inlet communicated with the inner chamber; wherein the blade is made of a ceramic material; wherein the first positioning groove and the second positioning groove are oppositely disposed, a first end of the blade is inserted into the first positioning groove, and a second end of the blade is inserted into the second positioning groove; wherein the frame comprises a positioning portion located below the pencil holder; and wherein a support panel is fixedly connected between an inner side wall of the first support plate and an outer side wall of the pencil holder, a lower end surface of the support panel is fixedly connected to an upper end surface of the positioning portion, an upper end surface of the support panel is fixedly connected to the lower end surface of the upper plate, an outer side of an upper end of the pencil holder is disposed with an outer bulge along an outer peripheral surface of the pencil holder, the outer bulge has an arcuate shape, a first end of the outer bulge is disposed with an extension extended outward away from the pencil holder, and the second positioning groove is formed by an upper portion of a surface of the support panel that mates with the blade and by an inner side surface of the extension.

2. The pencil sharpener assembly as claimed in claim 1, wherein the frame further comprises an upper plate, a lower plate disposed oppositely to the upper plate, and a second support plate disposed oppositely to the first support plate, the first support plate and the second support plate are respectively connected between the upper plate and the lower plate, the pencil holder is located at a lower end surface of the upper plate, the positioning portion is on an upper end surface of the lower plate, and the first positioning groove is disposed on the upper end surface of the positioning portion.

3. The pencil sharpener assembly as claimed in claim 2, wherein a lower portion of the surface of the support panel that mates with the blade is disposed with a first positioning block, a lower end surface of the first positioning block is fixedly connected to the upper end surface of the positioning portion, a first side wall of the first positioning block is fixedly connected to the inner side wall of the first support plate, and a second side wall of the first positioning block abuts against a blade spine opposite the blade edge.

4. The pencil sharpener assembly as claimed in claim 2, wherein the pencil holder has an inverted tapered shape, the blade is attached on the support panel and the surface of the support panel that mates with the blade is flush with a second side wall of the pencil holder at the blade inlet, and the blade edge of the blade passes through the blade inlet and extends into the inner chamber.

5. The pencil sharpener assembly as claimed in claim 4, wherein a bolster panel is fixedly connected between the outer side wall of the pencil holder and an inner side wall of the second support plate, an upper end surface of the bolster panel is fixedly connected to the lower end surface of the upper plate, and a second end of the outer bulge is fixedly connected to the bolster panel.

6. The pencil sharpener assembly as claimed in claim 5, wherein the upper portion of the surface of the support panel that mates with the blade is disposed with a second positioning block, an upper end surface of the second positioning block is fixedly connected to a lower end surface of the outer bulge, and a first side wall of the second positioning block abuts against the blade spine opposite the blade edge.

7. The pencil sharpener assembly as claimed in claim 4, wherein a shape of the first positioning groove and a shape of the second positioning groove are same as a cross section of the blade, each of inner walls of the first positioning groove mates with each of outer walls of a corresponding end of the blade, and each of inner walls of the second positioning groove mates with each of the outer walls of the corresponding end of the blade.

8. The pencil sharpener assembly as claimed in claim 7, wherein the second positioning groove communicates with the blade inlet, the blade is disposed with a bevel adjacent to the blade edge, an inner side of the outer bulge is correspondingly disposed with an inclined second locking surface, the positioning portion is correspondingly disposed with an inclined first locking surface on an inner side of the first positioning groove, the first locking surface is attached to a lower portion of the bevel, and the second locking surface is attached to an upper portion of the bevel.

9. The pencil sharpener assembly as claimed in claim 4, wherein a bolster strip is disposed between an outer side wall of the outer bulge and an outer side wall of the positioning portion, and an inner side surface of the bolster strip is attached to an outer side surface of the blade.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a perspective view of a first embodiment of a pencil sharpener assembly;

(2) FIG. 2 is a perspective view of another angle of the first embodiment of the pencil sharpener assembly;

(3) FIG. 3 is an exploded perspective view of the first embodiment of the pencil sharpener assembly;

(4) FIG. 4 is a front view of the first embodiment of the pencil sharpener assembly;

(5) FIG. 5 is a cross-sectional view taken along line A-A of FIG. 4;

(6) FIG. 6 is a cross-sectional view taken along line B-B of FIG. 4;

(7) FIG. 7 is a cross-sectional view taken along line C-C of FIG. 4;

(8) FIG. 8 is a cross-sectional view taken along line D-D of FIG. 4;

(9) FIG. 9 is a front view of a frame of the first embodiment of the pencil sharpener assembly;

(10) FIG. 10 is a cross-sectional view taken along line E-E of FIG. 9;

(11) FIG. 11 is a cross-sectional view taken along line F-F of FIG. 9; and

(12) FIG. 12 is a schematic view of a second embodiment of the pencil sharpener assembly.

DETAILED DESCRIPTION OF THE INVENTION

(13) The technical solutions of the present invention are further described below with reference to the specific embodiments of the present invention in conjunction with the accompanied drawings, but the present invention is not limited to the embodiments.

Embodiment 1

(14) As shown in FIG. 1, FIG. 2, and FIG. 6, one embodiment of a pencil sharpener assembly comprises a frame 1 and a blade 2, the blade 2 is made of a ceramic material. The blade 2 has an elongated sheet shape, and one side of the blade 2 is disposed with a blade edge 2a. The frame 1 is an integrated structure, the frame 1 comprises a lower plate 4, an upper plate 3 disposed oppositely to the lower plate 4, and a first support plate 5 and a second support plate 6 which are both fixedly connected between the upper plate 3 and the lower plate 4, and the first support plate 5 and the second support plate 6 are disposed oppositely to each other. A lower end surface of the lower plate 4 is disposed with a protruded coupler 4a, and the coupler 4a is provided with a square coupling hole 4a1. The disposition of the coupling hole 4a1 is mainly provided for inserting a rotating shaft end of a motor when the pencil sharpener assembly is used in an electric pencil sharpener, so that the rotating shaft of the motor can drive the entire pencil sharpener assembly to rotate together to sharpen a pencil.

(15) As shown in FIG. 3 and FIG. 6, one embodiment of an upper end surface of the upper plate 3 is disposed with a protruded pencil portal 3b, and a pencil entry hole 3b1 is provided on the pencil portal 3b. A lower end surface of the upper plate 3 is disposed with a protruded pencil holder 3a, the pencil holder 3a has an inverted tapered shape, and the pencil holder 3a is penetrating disposed with a pencil chamber 3a1 in an axial direction of the pencil holder 3a. A lower end of the pencil entry hole 3b1 is communicated to an upper end of the pencil chamber 3a1. A side portion of the pencil holder 3a is disposed with a blade inlet 3a2 communicated with the pencil chamber 3a1, the blade 2 is disposed along an axial direction of the pencil chamber 3a1, and the blade edge 2a of the blade 2 passes through the blade inlet 3a2 and extends into the pencil chamber 3a1.

(16) As shown in FIG. 3 and FIG. 5, one embodiment of a support panel 7 is fixedly connected between an inner side wall of the first support plate 5 and an outer side wall of the pencil holder 3a, the blade 2 is attached on the support panel 7, a surface of the support panel 7 that mates with the blade 2 is flush with a second side wall 3c of the pencil holder 3a at the blade inlet 3a2, and the blade edge 2a of the blade 2 passes through the blade inlet 3a2 and extends into the pencil chamber 3a1. An upper end surface of the lower plate 4 is disposed with a protruded positioning portion 4b, the positioning portion 4b is fixedly connected to both the inner side wall of the first support plate 5 and an inner side wall of the second support plate 6, and the positioning portion 4b is located below the pencil holder 3a. A lower end surface of the support panel 7 is fixedly connected to an upper end surface of the positioning portion 4b. A shape of the first positioning groove 4b1 is the same as a cross section of the blade 2, the first positioning groove 4b1 is disposed on the upper end surface of the positioning portion 4b, a first end of the blade 2 is inserted into the first positioning groove 4b1, and inner walls of the first positioning groove 4b1 mate with outer walls of the blade 2 respectively.

(17) As shown in FIG. 1, FIG. 4, and FIG. 9, in one embodiment, a lower portion of the surface of the support panel 7 that mates with the blade 2 is disposed with a first positioning block 7a, a lower end surface of the first positioning block 7a is fixedly connected to the upper end surface of the positioning portion 4b, a first side wall of the first positioning block 7a is fixedly connected to the inner side wall of the first support plate 5, and a second side wall of the first positioning block 7a abuts against a blade spine opposite the blade edge 2a.

(18) As shown in FIG. 2, FIG. 3, FIG. 4, FIG. 8, FIG. 9, and FIG. 10, one embodiment of an outer side of an upper end of the pencil holder 3a is disposed with an outer bulge 3a3 along an outer peripheral surface of the pencil holder 3a, the outer bulge 3a3 has an arcuate shape, and a first end of the outer bulge 3a3 is disposed with an extension 3a31 extended outward away from the pencil holder 3a. A bolster panel 8 is fixedly connected between the outer side wall of the pencil holder 3a and an inner side wall of the second support plate 6, an upper end surface of the bolster panel 8 is fixedly connected to the lower end surface of the upper plate 3, and a second end of the outer bulge 3a3 is fixedly connected to the bolster panel 8.

(19) As shown in FIG. 5, FIG. 7, FIG. 8, FIG. 10, and FIG. 11, one embodiment of an upper end surface of the support panel 7 is fixedly connected to the lower end surface of the upper plate 3, and an upper portion of the surface of the support panel 7 that mates with the blade 2 as well as an inner side surface of the extension 3a31 form a second positioning groove 9. The second positioning groove 9 and the first positioning groove 4b1 are oppositely disposed, a second end of the blade 2 is inserted into the second positioning groove 9, a shape of the second positioning groove 9 is the same as the cross section of the blade 2, and inner walls of the second positioning groove 9 mate with the outer walls of the blade 2 respectively. The second positioning groove 9 communicates with the blade inlet 3a2, the blade 2 is disposed with a bevel 2b adjacent to the blade edge 2a. An inner side of the outer bulge 3a3 is correspondingly disposed with an inclined second locking surface 3a32, and the second locking surface 3a32 is attached to an upper portion of the bevel 2b. The positioning portion 4b is correspondingly disposed with an inclined first locking surface 4b2 on an inner side of the first positioning groove 4b1, and the first locking surface 4b2 is attached to a lower portion of the bevel 2b.

(20) As shown in FIG. 1, FIG. 2, FIG. 4, and FIG. 8, in one embodiment, the upper portion of the surface of the support panel 7 that mates with the blade 2 is disposed with a second positioning block 7b, an upper end surface of the second positioning block 7b is fixedly connected to a lower end surface of the outer bulge 3a3, and a first side wall of the second positioning block 7b abuts against the blade spine opposite the blade edge 2a.

(21) One embodiment of the pencil sharpener assembly is provided with the first positioning groove 4b1 and the second positioning groove 9 disposed oppositely on the frame 1, and by having the first end of the ceramic-made blade 2 inserted into the first positioning groove 4b1, and the second end inserted into the second positioning groove 9, thereby the ceramic-made blade 2 can be fixed on the frame 1. Therefore, the technical problem that the ceramic-made blade 2 cannot be fixed on the frame 1 by screws like the conventional blade due to its high degree of brittleness is solved, thereby realizing the use of the ceramic-made blade 2 in the field of pencil sharpener.

(22) At the same time, one embodiment of the blade 2 is easily subjected to a backward reacting force when sharpening the pencil. Therefore, although the two ends of the blade are fixed on the frame 1 by the first positioning groove 4b1 and the second positioning groove 9, the portion of the blade 2 other than the two ends becomes more brittle. Therefore, by making the lower portion of the surface of the support panel 7, which mates with the blade 2, disposed with the first positioning block 7a; and by making the upper portion of the surface of the support panel 7, which mates with the blade 2, disposed with the second positioning block 7b; and by having the second side wall of the first positioning block 7a as well as the first side wall of the second positioning block 7b abutted against the blade spine opposite the blade edge 2a; a good supporting force can be formed when the blade 2 is subjected to a backward reacting force, so that the ceramic-made blade 2 can be well fixed during use. Moreover, the first end of the ceramic-made blade 2 is fixed by the first positioning groove 4b1, and the second end of the ceramic-made blade 2 is fixed by the second positioning groove 9, so that it is not required to process on the ceramic-made blade 2, thereby preventing the ceramic-made blade 2 from fracturing when it is being fixed.

(23) In addition, the blade edge 2a of the blade 2 in the conventional design is also required to pass through the blade inlet 3a2 and extend into the pencil chamber 3a1; however, since the ordinary blade can be directly fixed by screws, the case in which the blade edge 2a of the blade 2 extends excessively into the pencil chamber 3a1 will not occur. However, since the pencil sharpener assembly in the present application adopts the ceramic-made blade 2 and uses the first positioning groove 4b1 and the second positioning groove 9 to position the both ends of the ceramic-made blade 2, it is impossible to control an extent to which the blade edge 2a of the blade 2 extends into the pencil chamber 3a1. In order to solve this problem, by having the blade 2 of the pencil sharpener assembly disposed with the bevel 2b adjacent to the blade edge 2a, the inner side of the outer bulge 3a3 correspondingly disposed with the inclined second locking surface 3a32, and by having the second locking surface 3a32 attached on the bevel 2b, so that the extent to which the blade edge 2a of the blade 2 extends into the pencil chamber 3a1 is limited. Thereby the extent to which the blade edge 2a of the blade 2 extends into the pencil chamber 3a1 can be well ensured after the ceramic-made blade 2 is fixed on the frame 1, and the fixing effect of the ceramic-made blade 2 on the frame 1 can be further enhanced.

(24) One embodiment of the frame 1 can be made of plastic or aluminum alloy. Using the frame 1 made of plastic as an example, the pencil sharpener assembly can have the ceramic-made blade 2 directly integrated into the frame 1 when the frame 1 is formed by injection molding, and specifically, the blade 2 can be placed in a mold of the frame 1 with a cavity having a same shape as the frame 1, and then injection mold the mold of the frame 1. In this way, after the frame 1 is formed in the mold of the frame 1, the first positioning groove 4b1 and the second positioning groove 9 are formed on the frame 1, and at the same time, the first end of the blade 2 is naturally located in the first positioning groove 4b1, and the second end of the blade 2 is naturally located in the second positioning groove 9, thereby enabling the ceramic-made blade 2 to be fixed on the frame 1 to realize the use of the ceramic-made blade 2 in the field of pencil sharpener. If the frame 1 is made of an aluminum alloy, the blade 2 can be placed in the cavity of the mold of the frame 1 when the frame 1 is formed, and then the frame 1 can be formed by die casting and the ceramic-made blade 2 can be encapsulated. A length of one side of the blade 2 provided with the blade edge 2a is smaller than a length of the opposite spine side of the blade 2. By such disposition, the two ends of the blade 2 can be inclined, and the two ends of the blade 2 are inclined to match the inclined surfaces in the mold, thereby preventing the blade edge 2a of the blade 2 from displacing and touching the inner walls of the mold.

Embodiment 2

(25) The structure and the principles of this embodiment are basically the same as those of the first embodiment. The differences lie in that, as shown in FIG. 12, in this embodiment, a bolster strip 10 is disposed between an outer side wall of the outer bulge 3a3 and an outer side wall of the positioning portion 4b, and an inner side surface of the bolster strip 10 is attached to an outer side surface of the blade 2. By having the bolster strip 10 disposed between the outer side wall of the outer bulge 3a3 and the outer side wall of the positioning portion 4b, and the inner side surface of the bolster strip 10 attached to the outer side surface of the blade 2, the fixing effect of the ceramic-made blade 2 on the frame 1 can be further enhanced.

(26) The specific embodiments described herein are merely illustrative of the spirit of the present invention. Technical personnel skilled in the art to which the present invention pertains can make various modifications or additions to the specific embodiments described or replace them in a similar manner, without departing from the spirit of the present invention or beyond the scope defined by the appended claims.

List of Referenced Parts

(27) 1 frame 2 blade 2a blade edge 2b bevel 3 upper plate 3a pencil holder 3a1 pencil chamber 3a2 blade inlet 3a3 outer bulge 3a31 extension 3a32 second locking surface 3b pencil portal 3b1 pencil entry hole 3c second side wall 4 lower plate 4a coupler 4a1 coupling hole 4b positioning portion 4b1 first positioning groove 4b2 first locking surface 5 first support plate 6 second support plate 7 support panel 7a first positioning block 7b second positioning block 8 bolster panel 9 second positioning groove 10 bolster strip