Pencil feeding mechanism of pencil sharpener and pencil sharpener

Abstract

The utility model discloses a pencil feeding mechanism of a pencil sharpener and the pencil sharpener, and belongs to the technical field of pencil sharpeners, the pencil feeding mechanism comprises a first pencil clamping assembly, a second pencil clamping assembly, a vortex plate and a mounting plate, the mounting plate is erected above the vortex plate, and the first pencil clamping assembly and the second pencil clamping assembly are connected with the mounting plate; the installation disc rotates to drive the first pen clamping assembly and the second pen clamping assembly to get close to each other for clamping or get away from each other for expansion, the installation disc is in contact connection with the vortex disc, and the vortex disc rotates to drive the installation disc to rotate to drive the first pen clamping assembly and the second pen clamping assembly to expand by a preset distance. The first pencil clamping assembly and the second pencil clamping assembly are arranged to have an initial expansion state, so that pencil feeding is labor-saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pencil sharpener, in particular to a pencil feeding mechanism of a pencil sharpener and the pencil sharpener. BACKGROUND

[0002] As a pencil sharpening tool, the pencil sharpener is deeply loved by students. The pencil sharpener includes a pencil feeding mechanism and a pencil sharpening mechanism. When sharpening a pencil, the pencil is inserted into the pencil sharpening mechanism through the pencil feeding mechanism. After the pencil is inserted into place, the pencil feeding mechanism clamps the pencil, and then the pencil sharpening mechanism cuts the pencil tip. After the pencil is sharpened, the pencil feeding mechanism can also eject the pencil from the pencil sharpener.

[0003] Currently, there are various structures of pencil feeding mechanisms that can automatically feed and eject pencils, such as the Chinese patent application "Pencil Feeding Mechanism", application number CN202320736416.4, which discloses a base, a first pencil feeding assembly and a second pencil feeding assembly are provided on the base, and a pencil feeding channel for feeding and ejecting pencils is formed between the first pencil feeding assembly and the second pencil feeding assembly. At least one side of the pencil feeding channel is provided with a guide mechanism for guiding the pencil.

[0004] In the prior art, the clamping force of the pencil feeding mechanism on the pencil generally comes from the elastic member, which deforms elastically to generate the clamping force. The user inserts the pencil into the pencil feeding mechanism, and needs to insert the pencil between the first pencil feeding assembly and the second pencil feeding assembly. That is, the user needs to exert force to open the first pencil feeding assembly and the second pencil feeding assembly, so that the pencil can be smoothly inserted and subjected to the corresponding clamping force. However, when the diameter of the pencil is large, the user needs to overcome the resistance of the elastic member, making it difficult for the user to feed and eject the pencil, and the user experience is not good. CONTENT OF THE UTILITY MODEL

[0005] The technical problem to be solved by the present application is to provide a pencil feeding mechanism of a pencil sharpener and the pencil sharpener, which sets an initial expansion state of the first pencil clamping assembly and the second pencil clamping assembly, making it easier for the pencil to be inserted.

[0006] The technical solution adopted by the present application is: a pencil feeding mechanism of a pencil sharpener, comprising a first pencil clamping assembly, a second pencil clamping assembly, a vortex disc and a mounting disc, the mounting disc is arranged above the vortex disc, the first pencil clamping assembly and the second pencil clamping assembly are connected with the mounting disc respectively, the mounting disc rotates to drive the first pencil clamping assembly and the second pencil clamping assembly to approach each other for clamping or to move away from each other for expansion, the mounting disc is in contact with the vortex disc, and the vortex disc rotates to drive the mounting disc to rotate, thereby driving the first pencil clamping assembly and the second pencil clamping assembly to expand to a predetermined distance.

[0007] Compared with the prior art, the application has the advantages that a linkage mechanism of the scroll and the mounting disc is arranged, the scroll can drive the mounting disc to rotate when the scroll rotates, and then the first pencil clamping assembly and the second pencil clamping assembly are controlled to expand. By arranging the first pencil clamping assembly and the second pencil clamping assembly to have an initial expansion state, a user can easily clamp a pencil without exerting a large force when inserting the pencil. This design improves the efficiency of inserting and removing the pencil and greatly improves the user experience, making the pencil sharpening process smoother and more convenient. The design of using the scroll to drive the mounting disc to rotate can directly apply the power of the original pencil sharpener without the need for additional power devices. This makes the application simple to apply in the pencil sharpener without the need for excessive changes to the original pencil sharpener structure, reducing the production and processing cost of the product.

[0008] In some embodiments of the application, the application further includes a mounting seat, the first pencil clamping assembly and the second pencil clamping assembly are mounted on the mounting seat, and the mounting disc is arranged on the mounting seat to form a mounting space for accommodating the first pencil clamping assembly and the second pencil clamping assembly. The mounting seat cooperates with the mounting disc to achieve stable installation of the first pencil clamping assembly and the second pencil clamping assembly.

[0009] In some embodiments of the application, the mounting disc is connected to an elastic member, the elastic member applies a force to the mounting disc to drive the first pencil clamping assembly and the second pencil clamping assembly to approach each other; and the elastic member is a hoop, one end of the hoop is mounted on the mounting seat, and the other end of the hoop is connected to the mounting disc.

[0010] The elastic member drives the first pencil clamping assembly and the second pencil clamping assembly to approach each other by applying a force, ensuring that the pencil can be stably fixed in the clamped state and avoiding loosening or slipping during use. The design of the elastic member allows the clamping force to be self-adaptively adjusted according to the size of the pencil and the user's operation, improving the universality and adaptability of the device.

[0011] The hoop is used as the elastic member, simplifying the design of the clamping mechanism, reducing the dependence on complex springs or other mechanical devices, and making the overall structure more compact and easy to manufacture. The design of the hoop can provide uniform and continuous clamping force, enhancing the reliability of the device during long-term use and reducing performance degradation due to elastic fatigue. The installation of the hoop is relatively simple, and users can operate more conveniently during maintenance and replacement, reducing maintenance costs and technical barriers.

[0012] In some embodiments of the application, two symmetrical guide grooves are formed in the mounting disc, a protruding column is arranged on each of the first pencil clamping assembly and the second pencil clamping assembly, the protruding column on the first pencil clamping assembly and the protruding column on the second pencil clamping assembly respectively extend into the corresponding guide grooves, and the mounting disc rotates to drive the protruding column on the first pencil clamping assembly and the protruding column on the second pencil clamping assembly to slide along the guide grooves.

[0013] The design of the guide groove can effectively guide the movement of the first and second pen clamping assemblies, ensuring that they move along a predetermined trajectory during rotation, reducing deviation and jamming. The design of the guide groove on the mounting disc enables the first and second pen clamping assemblies to move synchronously.

[0014] In some embodiments of the present application, a push rod is movably mounted on the mounting disc, and the surface of the vortex disc is provided with a push block corresponding to the push rod. The vortex disc rotates to drive the push block to rotate. The rotating push block contacts the push rod, which in turn pushes the mounting disc to rotate.

[0015] The traditional vortex disc structure is a simple disc structure and cannot directly drive the rotation of the mounting disc. The present application adds a push block to the vortex disc, which cooperates with the push rod to achieve the rotation of the mounting disc driven by the vortex disc. In order to further shorten the cycle of the mounting disc, multiple push blocks can be arranged on the vortex disc.

[0016] In some embodiments of the present application, a vertical sliding groove is arranged on the mounting disc, and the push rod is installed in the sliding groove through a linear spring, which applies a downward pushing force to the push rod. Under normal circumstances, the push rod remains in contact with the surface of the vortex disc. When the push rod is subjected to a vertical pushing force, it moves in the vertical direction.

[0017] In the present application, the push rod can only move up and down relative to the mounting disc, so the vortex disc can drive the rotation of the mounting disc by pushing the push rod. The push rod is kept in an extended downward state under the action of the linear spring.

[0018] In some embodiments of the present application, the push rod is located in a mounting seat, and a limiting groove is arranged on the inner wall surface of the mounting seat. An expanded guide channel and a contracted guide channel are arranged in the limiting groove. A clamping protrusion is arranged on the push rod, which is embedded in the limiting groove. The vortex disc rotates to drive the push rod to rotate, and the rotating push rod drives the clamping protrusion to move along the expanded guide channel, the contracted guide channel, the expanded guide channel, and the contracted guide channel in a cycle.

[0019] That is, in the present application, the movement of the push rod is a cycle, that is, the movement of the mounting disc is also a cycle.

[0020] In some embodiments of the present application, the vortex disc drives the mounting disc to rotate forward, and the clamping protrusion moves along the expanded guide channel. The expanded guide channel drives the push rod to move upward through the clamping protrusion until the push rod is separated from the push block.

[0021] In the present application, the forward rotation and reverse rotation of the mounting disc only mean that the rotation directions of the two are opposite. The forward rotation and reverse rotation do not have a specific rotation direction.

[0022] In some embodiments of the present application, the installation disc is separated from the pushing force of the pushing block, and the pushing rod of the installation disc is forced to rotate reversely by the elastic member, the installation disc reversely rotates to drive the clamping convex into the closed guiding channel, and the clamping convex is located in the closed guiding channel, so that the pushing rod is lifted and not in contact with the pushing block; when the clamping convex passes through the closed guiding channel, the pushing rod is moved downward to contact the surface of the vortex disc under the action of the linear spring.

[0023] The flared guiding channel is an inclined channel, the installation disc rotates forward to drive the clamping convex to move along the flared guiding channel, and the clamping convex moving in the flared guiding channel is subjected to the pushing force of the flared guiding channel, so that the pushing rod moves upward and gradually moves away from the vortex disc.

[0024] When the clamping convex moves to the end of the flared guiding channel, the pushing rod is separated from the pushing block, and the installation disc is not subjected to the pushing force of the vortex disc, at this time, the installation disc is only subjected to the force of the elastic member, the installation disc reversely rotates to drive the clamping convex into the closed guiding channel, the clamping convex passes through the closed guiding channel under the action of the elastic member, the closed guiding channel is a horizontally arranged channel, and the clamping convex is located in the closed guiding channel, so that the pushing rod is kept in a state of not contacting the pushing block.

[0025] When the clamping convex passes through the closed guiding channel, the pushing rod is moved downward to contact and connect with the vortex disc under the action of the linear spring.

[0026] A pencil sharpener comprises a pencil feeding mechanism of the pencil sharpener.

[0027] On the basis of common knowledge in the art, the above-mentioned embodiments can be combined arbitrarily. BRIEF DESCRIPTION OF DRAWINGS

[0028] The present application will be further described in detail below in combination with the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments and therefore should not be regarded as limiting the scope of the present application. In addition, unless specifically indicated, the drawings only schematically represent the composition or structure of the described objects and can include exaggerated display, and the drawings are not necessarily drawn to scale.

[0029] Figure 1 is a structural schematic diagram of the present application;

[0030] Figure 2 is a structural schematic diagram of the present application; Figure 1

[0031] Figure 3 is a structural schematic diagram of the present application; Figure 2

[0032] Figure 4 is a structural schematic diagram of the present application without the installation seat; ​​

[0033] Figure 5 This is a schematic diagram of the mounting base in this application.

[0034] The specific explanations of the reference numerals in the attached drawings are as follows: 1. First pen clamping assembly; 2. Second pen clamping assembly; 3. Scroll plate; 4. Mounting plate; 5. Elastic element; 6. Push rod; 7. Slide groove; 8. Push block; 9. Mounting base; 10. Limiting groove; 11. Flared guide channel; 12. Constricted guide channel; 13. Clip protrusion; 14. Guide groove; 15. Protruding post; 16. Linear spring. Detailed Implementation

[0035] The present application will now be described in detail with reference to the accompanying drawings.

[0036] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0037] A pencil sharpener feeding mechanism, as described in Embodiment 1 Figures 1 to 3 As shown, the device includes a first pen-clamping assembly 1, a second pen-clamping assembly 2, a scroll plate 3, and a mounting plate 4. The mounting plate 4 is mounted above the scroll plate 3. The first pen-clamping assembly 1 and the second pen-clamping assembly 2 are respectively connected to the mounting plate 4. Rotation of the mounting plate 4 causes the first pen-clamping assembly 1 and the second pen-clamping assembly 2 to move closer together to clamp or move further apart to expand. The mounting plate 4 is in contact with the scroll plate 3. Rotation of the scroll plate 3 drives the mounting plate 4 to rotate, causing the first pen-clamping assembly 1 and the second pen-clamping assembly 2 to expand to a predetermined distance. A linkage mechanism between the scroll plate 3 and the mounting plate 4 is established. When the scroll plate 3 rotates, it drives the mounting plate 4 to rotate, thereby controlling the expansion of the first pen-clamping assembly 1 and the second pen-clamping assembly 2. By setting the first pen-clamping assembly 1 and the second pen-clamping assembly 2 to have an initial expanded state, the user can easily clamp the pencil without applying excessive force when inserting it.

[0038] The aforementioned design improves the efficiency of pencil advance and retreat and greatly enhances the user experience, making the pencil sharpening process smoother and more convenient. Furthermore, the design using a vortex plate 3 to drive the rotation of the mounting plate 4 directly utilizes the original pencil sharpener's power drive, eliminating the need for an additional power unit. This allows this application to be easily integrated into pencil sharpeners without requiring significant modifications to the original structure, thus reducing product manufacturing costs.

[0039] Example 2, as Figures 1 to 5As shown, the present application also includes a mounting base 9, on which the first pencil clamping assembly 1 and the second pencil clamping assembly 2 are installed, and the mounting disc 4 is erected on the mounting base 9 to form a mounting space for accommodating the first pencil clamping assembly 1 and the second pencil clamping assembly 2. The mounting base 9 cooperates with the mounting disc 4 to achieve stable installation of the first pencil clamping assembly 1 and the second pencil clamping assembly 2.

[0040] The mounting disc 4 is connected to an elastic member 5, which applies a force to the mounting disc 4 to drive the first pencil clamping assembly 1 and the second pencil clamping assembly 2 to move closer to each other; the elastic member 5 adopts a hoop, one end of which is installed on the mounting base 9, and the other end of which is connected to the mounting disc 4. The elastic member 5 drives the first pencil clamping assembly 1 and the second pencil clamping assembly 2 to move closer to each other by applying a force, ensuring that the pencils can be stably fixed in a clamped state and avoiding loosening or slipping during use. The design of the elastic member 5 allows the clamping force to be self-adaptively adjusted according to the size of the pencils and the operation of the user, improving the universality and adaptability of the device.

[0041] Using a hoop as the elastic member 5 simplifies the design of the clamping mechanism, reduces the dependence on complex springs or other mechanical devices, and makes the overall structure more compact and easy to manufacture. The design of the hoop can provide uniform and continuous clamping force, enhancing the reliability of the device during long-term use and reducing performance degradation due to elastic fatigue. The installation of the hoop is relatively simple, and users can operate more conveniently during maintenance and replacement, reducing maintenance costs and technical barriers.

[0042] Two guide grooves 14 are symmetrically arranged on the mounting disc 4, and a protruding column 15 is arranged on each of the first pencil clamping assembly 1 and the second pencil clamping assembly 2, with the protruding column 15 on the first pencil clamping assembly 1 and the protruding column 15 on the second pencil clamping assembly 2 respectively extending into the corresponding guide groove 14; rotation of the mounting disc 4 causes the protruding column 15 on the first pencil clamping assembly 1 and the protruding column 15 on the second pencil clamping assembly 2 to slide along the guide groove 14. The design of the guide groove 14 can effectively guide the movement of the first pencil clamping assembly 1 and the second pencil clamping assembly 2, ensuring that they move along the predetermined trajectory during rotation, reducing deviation and jamming. The design of the guide groove 14 on the mounting disc 4 achieves synchronous movement of the first pencil clamping assembly 1 and the second pencil clamping assembly 2.

[0043] The push rod 6 is movably mounted on the mounting disc 4, and the surface of the vortex disc 3 is provided with a push block 8 corresponding to the push rod 6. The vortex disc 3 drives the push block 8 to rotate, and the rotating push block 8 contacts the push rod 6 and drives the mounting disc 4 to rotate through the push rod 6. The traditional vortex disc 3 is a simple disc structure and cannot directly drive the mounting disc 4 to rotate. The push block 8 is additionally arranged on the vortex disc 3, and the push block 8 cooperates with the push rod 6, so that the vortex disc 3 drives the mounting disc 4 to rotate. In order to further shorten the cycle of the mounting disc 4, a plurality of push blocks 8 can be arranged on the vortex disc 3.

[0044] The mounting disc 4 is provided with a vertically arranged sliding groove 7, and the push rod 6 is mounted in the sliding groove 7 through a linear spring 16. The linear spring 16 applies a downward thrust to the push rod 6. Under normal circumstances, the push rod 6 maintains a state of contacting the surface of the vortex disc 3, and the push rod 6 moves in the vertical direction under the vertical thrust. In the present application, the push rod 6 can only move up and down relative to the mounting disc 4, so that the vortex disc 3 can drive the mounting disc 4 to rotate by pushing the push rod 6. The push rod 6 is kept in an extended downward state under the action of the linear spring 16.

[0045] The other contents of the second embodiment are the same as those of the first embodiment.

[0046] As shown in the third embodiment, Figures 1 to 5 The push rod 6 is located in the mounting seat 9, the inner wall surface of the mounting seat 9 is provided with a limiting groove 10, the limiting groove 10 is provided with an expanded guiding channel 11 and a contracted guiding channel 12, the push rod 6 is provided with a clamping protrusion 13, the clamping protrusion 13 is embedded in the limiting groove 10, the vortex disc 3 drives the push rod 6 to rotate, and the rotating push rod 6 drives the clamping protrusion 13 to move along the expanded guiding channel 11, the contracted guiding channel 12, the expanded guiding channel 11 and the contracted guiding channel 12 in turn. That is, in the present application, the movement of the push rod 6 is a cycle, that is, the movement of the mounting disc 4 is also a cycle.

[0047] The vortex disc 3 drives the mounting disc 4 to rotate forward, and the clamping protrusion 13 moves along the expanded guiding channel 11. The expanded guiding channel 11 drives the push rod 6 to move upward through the clamping protrusion 13, and the push rod 6 is separated from the push block 8. In the present application, the forward rotation and the reverse rotation of the mounting disc 4 only mean that the rotation directions of the two are opposite. The forward rotation and the reverse rotation do not have a specific rotation direction.

[0048] When the installation disc 4 is separated from the pushing force of the pushing block 8, the pushing rod 6 of the installation disc 4 is forced to rotate reversely by the elastic member 5, the installation disc 4 rotates reversely to drive the clamping convex 13 into the converging guide channel 12, and the clamping convex 13 is located in the converging guide channel 12, so that the pushing rod 6 is lifted and not in contact with the pushing block 8; when the clamping convex 13 passes through the converging guide channel 12, the clamping convex 13 loses the force, and the pushing rod 6 is moved downward to be in contact with the surface of the vortex disc 3 under the action of the linear spring 16. The expanding guide channel 11 is an inclined channel, the installation disc 4 rotates forward to drive the clamping convex 13 to move along the expanding guide channel 11, the clamping convex 13 moving in the expanding guide channel 11 is subjected to the pushing force of the expanding guide channel 11, so that the pushing rod 6 is moved upward and gradually away from the vortex disc 3; when the clamping convex 13 moves to the end of the expanding guide channel 11, the pushing rod 6 is separated from the pushing block 8, and the installation disc 4 is not subjected to the pushing force of the vortex disc 3, at this time, the installation disc 4 is only subjected to the force of the elastic member 5, the installation disc 4 rotates reversely to drive the clamping convex 13 into the converging guide channel 12, the clamping convex 13 passes through the converging guide channel 12 under the action of the elastic member 5, the converging guide channel 12 is a horizontal channel, the clamping convex 13 is located in the converging guide channel 12, so that the pushing rod 6 is not in contact with the pushing block 8; when the clamping convex 13 passes through the converging guide channel 12, the pushing rod 6 is moved downward to be in contact with the vortex disc 3 under the action of the linear spring 16.

[0049] The other contents of the third embodiment are the same as those of the first embodiment or the second embodiment.

[0050] The pencil sharpener according to any one of the first to third embodiments.

[0051] The above has been a detailed introduction to the present application, and the principles and implementation modes of the present application are described by using specific examples. The above description of the embodiments is only used to help understand the present application and the core idea. It should be noted that those skilled in the art can make some improvements and modifications to the present application without departing from the principles of the present application, and these improvements and modifications also fall within the protection scope of the claims of the present application.

Claims

1. A pencil sharpener lead insertion mechanism, comprising: The utility model provides a pen clamping device, including first pen clamping component (1), second pen clamping component (2), scroll (3) and mounting disc (4), the mounting disc (4) is erected above scroll (3), first pen clamping component (1), second pen clamping component (2) are connected with mounting disc (4) respectively, the mounting disc (4) rotation drives first pen clamping component (1), second pen clamping component (2) and each other close clamping or each other away expansion, the mounting disc (4) is contacted with scroll (3) connection, scroll (3) rotation drive mounting disc (4) rotation drives first pen clamping component (1), second pen clamping component (2) and expands open predetermined interval.

2. A lead advancement mechanism for a pencil sharpener as defined in claim 1, wherein Still including mounting seat (9), first pen clamping component (1), second pen clamping component (2) are installed on mounting seat (9), the mounting disc (4) is erected on mounting seat (9) and constitutes the installation space of containing first pen clamping component (1), second pen clamping component (2).

3. A lead advancement mechanism for a pencil sharpener as defined in claim 2, wherein The mounting disc (4) is connected elastic element (5), and the elastic element (5) applies to the mounting disc (4) drive first pen clamping component (1), second pen clamping component (2) each other close force;The elastic element (5) adopts hoop, and one end of the hoop is installed on the mounting seat (9), and the other end of the hoop is connected with the mounting disc (4).

4. The pencil lead advance mechanism of claim 1 wherein, Two guide grooves (14) are set up on the mounting disc (4) and are symmetrical, the first pen clamping component (1) and the second pen clamping component (2) are provided with the convex column (15), and the convex column (15) on the first pen clamping component (1) and the convex column (15) on the second pen clamping component (2) are respectively inserted into the corresponding guide groove (14);The mounting disc (4) rotates, and the convex column (15) on the first pen clamping component (1) and the convex column (15) on the second pen clamping component (2) slide along the guide groove (14) where they are located.

5. The pencil lead advance mechanism of claim 1 wherein, The mounting disc (4) is movably provided with a push rod (6), and the surface of the scroll (3) is provided with a push block (8) corresponding to the push rod (6). The scroll (3) rotates to drive the push block (8) to rotate. The rotating push block (8) contacts the push rod (6), and the push rod (6) is pushed to rotate the mounting disc (4) through the push rod (6).

6. A pencil lead advancing mechanism according to claim 5, wherein The mounting disc (4) is provided with a vertically arranged sliding groove (7), and the push rod (6) is installed in the sliding groove (7) through a linear spring (16). The linear spring (16) applies a downward thrust to the push rod (6). Under normal circumstances, the push rod (6) maintains a state of contact with the surface of the scroll (3). When the push rod (6) receives a vertical thrust, it moves in the vertical direction.

7. A pencil lead advancing mechanism according to claim 6, wherein The push rod (6) is located in the mounting seat (9), and a limiting groove (10) is arranged on the inner wall surface of the mounting seat (9). An expanding guide channel (11) and a closing guide channel (12) are arranged in the limiting groove (10). A clamping convexity (13) is arranged on the push rod (6), and the clamping convexity (13) is embedded in the limiting groove (10). The scroll (3) rotates to push the push rod (6) to rotate. The rotating push rod (6) drives the clamping convexity (13) to move along the expanding guide channel (11), the closing guide channel (12), the expanding guide channel (11), and the closing guide channel (12) in turn.

8. A pencil lead advancing mechanism according to claim 7, wherein The scroll (3) drives the installation disc (4) to rotate forward, the clamping convex (13) moves along the flared guide channel (11), the flared guide channel (11) drives the push rod (6) to move upward through the clamping convex (13), until the push rod (6) is separated from the push block (8).

9. A pencil lead advancing mechanism according to claim 8, wherein When the installation disc (4) is separated from the push force of the push block (8), the push rod (6) of the installation disc (4) is forced to rotate reversely by the elastic member (5), the installation disc (4) drives the clamping convex (13) to enter the closed guide channel (12) in the reverse rotation, the clamping convex (13) is located in the closed guide channel (12), so that the push rod (6) is raised and does not contact the push block (8); when the clamping convex (13) passes through the closed guide channel (12), the force is lost, the push rod (6) moves downward under the action of the straight line spring (16) to contact the surface of the scroll (3).

10. A pencil sharpener characterized by The pencil sharpener includes the pencil feeding mechanism of any one of claims 1-9.

Images