Pencil feeding box of pencil sharpener

Abstract

The utility model discloses a pencil feeding box of a pencil sharpener, and belongs to the technical field of pencil feeding of the pencil sharpener, the pencil feeding box comprises a synchronizing part, a pencil feeding driving assembly and a pencil feeding guide assembly, the two ends of the pencil feeding driving assembly are installed on the synchronizing part, the normal state of the pencil feeding driving assembly is a folded state, and the pencil feeding driving assembly expands outwards under the thrust of pencil insertion; the pen feeding driving assembly expands outwards to drive the synchronous part to move, and the pen feeding guiding assembly is erected on the synchronous part and acts on the synchronous part to limit the synchronous part to be located at the position where the pen feeding driving assembly is in the folded state. The structure of the pencil feeding box is further optimized, when small-diameter pencils are inserted, the pencil feeding driving assembly can provide large clamping force, and it is guaranteed that the pencils are fed and retreated stably and reliably.

Description

TECHNICAL FIELD

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

[0002] In the modern stationery market, pencil sharpener is a common tool widely used in schools and offices. Although the traditional manual pencil sharpener is simple and easy to use, it cannot meet the needs of users in terms of efficiency and convenience. Therefore, the electric pencil sharpener has emerged as the times require and has become a more efficient choice. The electric pencil sharpener can quickly and evenly sharpen the pencil through the motor drive, greatly improving the use efficiency.

[0003] The electric pencil sharpener generally includes a pencil feeding mechanism and a pencil sharpening mechanism. When sharpening a pencil, the pencil will pass through the pencil feeding mechanism into the pencil sharpening mechanism. After the pencil is fed in place, the pencil feeding mechanism clamps it, 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.

[0004] At present, there are various types of pencils on the market, including triangular, round, and hollow pencils. These pencils have different shapes and diameters from traditional pencils, which puts higher requirements on pencil sharpeners. It is hoped that the pencil sharpener will be universal and can sharpen pencils of different diameters and shapes. Related prior art such as Chinese patent application "Self-adaptive pencil feeding mechanism", application number: CN201922501256.1, discloses a bottom, a first pencil feeding drive assembly and a second pencil feeding drive assembly. The first pencil feeding drive assembly and the second pencil feeding drive assembly are installed in the bottom and can move left and right. The bottom is connected with a guide piece through a elastic piece. The guide piece drives the first pencil feeding drive assembly and the second pencil feeding drive assembly to move inward synchronously. The first pencil feeding drive assembly and / or the second pencil feeding drive assembly are driven by the elastic piece to expand outward synchronously. It can freely adapt to different diameter pencils.

[0005] In the above-mentioned pencil feeding mechanism, the force driving the first pencil feeding drive assembly and the second pencil feeding drive assembly to move inward synchronously is mainly provided by the elastic piece connecting the guide piece. However, the clamping force provided by the elastic piece mainly depends on the deformation amount. This leads to the fact that when a pencil with a large diameter is inserted, the clamping force provided is sufficient; when a pencil with a small diameter is inserted, the clamping force provided is insufficient, which may cause the pencil to slip and other problems. In view of this, the present application provides a new pencil sharpener pencil feeding box structure to solve the above-mentioned problems. INNOVATION CONTENT

[0006] The technical problem to be solved by the present application is to provide a pencil sharpener pencil feeding box, which further optimizes the structure of the pencil feeding box. When a pencil with a small diameter is inserted, the pencil feeding drive assembly can also provide a larger clamping force, ensuring stable and reliable feeding and ejection of the pencil.

[0007] The technical scheme adopted by the present application is: a pencil sharpener pencil box, comprising a synchronization part, a pencil feeding driving assembly and a pencil feeding guide assembly, both ends of the pencil feeding driving assembly are installed on the synchronization part, the normal state of the pencil feeding driving assembly is a folding state, the pencil feeding driving assembly is expanded outward under the thrust of the inserted pencil, the pencil feeding driving assembly drives the synchronization part to move outward, the pencil feeding guide assembly is erected on the synchronization part, and the pencil feeding guide assembly acts on the synchronization part to limit the position of the synchronization part in the folding state of the pencil feeding driving assembly.

[0008] Compared with the prior art, the present application has the advantages that the setting of the synchronization part limits the synchronous movement of the pencil feeding driving assembly, and at the same time, the pencil feeding driving assembly moves the synchronization part when it is expanded under force. For this purpose, the present application adds the pencil feeding guide assembly erected on the synchronization part, and the pencil feeding guide assembly acts on the synchronization part to limit the position of the synchronization part in the folding state. The movement of the synchronization part is limited by the pencil feeding guide assembly, thereby limiting the pencil feeding part to remain in the folding state. When a small-diameter pencil is inserted, the pencil feeding driving assembly can provide a larger clamping force to ensure stable and reliable feeding and withdrawing of the pencil. The setting of the pencil feeding guide assembly limits the movement of the synchronization part, so that the pencil feeding driving assembly can remain stable in the folding state, avoiding shaking when the pencil is fed or withdrawn.

[0009] In some embodiments of the present application, a group of guide grooves are arranged on both side walls of the synchronization part, the guide groove group comprises two guide grooves arranged obliquely and symmetrically, the pencil feeding driving assembly comprises a first pencil feeding rubber roller and a second pencil feeding rubber roller, the ends of the first pencil feeding rubber roller and the second pencil feeding rubber roller are respectively installed in the two symmetrically arranged guide grooves, and the first pencil feeding rubber roller and the second pencil feeding rubber roller are expanded outward to drive the synchronization part to move upward. An elastic member is installed on the synchronization part, and the elastic member applies a downward moving force to the synchronization part to drive the first pencil feeding rubber roller and the second pencil feeding rubber roller to remain in a mutual folding state.

[0010] In the present application, the force with which the first pencil feeding rubber roller and the second pencil feeding rubber roller clamp the pencil comes from the elastic member, which can be a straight spring. However, the clamping force provided by the spring has the problem that the clamping force for a large-diameter pencil is sufficient, but the clamping force for a small-diameter pencil is insufficient. Therefore, the present application further adds the pencil feeding guide assembly acting on the synchronization part on the basis of the elastic member, which realizes the limiting of the synchronization part. When the diameter of the inserted pencil is small, the synchronization part remains in the position of the folding state, providing sufficient clamping force.

[0011] In some embodiments of the present application, the pencil insertion guide assembly comprises two symmetrically arranged guides, each of which is provided with a pressing foot that acts on the top surface of the synchronizer to limit the upward movement of the synchronizer. By providing the pressing foot, the upward movement of the synchronizer can be effectively limited, thereby maintaining the retracted state of the pencil insertion drive assembly. This design ensures that the pencil insertion drive assembly can provide stable clamping force when the pencil is inserted.

[0012] In some embodiments of the present application, the two guides are normally close to each other, and when a pencil is inserted between the two guides, the two guides are driven to move outward, and after the guides move outward by a predetermined distance, the pressing foot is disengaged from the synchronizer. That is, when the diameter of the pencil reaches a predetermined value and is inserted into the two guides, the pressing foot on the guide will disengage from the synchronizer, and the synchronizer will be in a free state, at which time the first pencil insertion rubber roller and the second pencil insertion rubber roller clamp the pencil by the force from the elastic member.

[0013] In the present application, the preferred solution is that when the diameter of the pencil is greater than 8 mm, the pressing foot on the guide is pushed to disengage from the synchronizer. When the diameter of the pencil is less than or equal to 8 mm, the pressing foot on the guide is pushed to press the synchronizer, limiting the pencil insertion drive assembly to be in a retracted state to clamp the pencil, ensuring that the small-diameter pencil receives clamping force. This design can adapt to pencils of different diameters and shapes, improving the universality of the pencil sharpener and meeting the diverse needs of pencils on the market.

[0014] In some embodiments of the present application, the top surface of the synchronizer is provided with a protrusion that is adapted to the pressing foot of the guide, and the bottom surface of the pressing foot of the guide is in contact with the top surface of the protrusion. By the contact between the protrusion and the pressing foot, the force generated when the pencil is inserted can be more effectively transmitted to the synchronizer, improving the uniformity and stability of the clamping force.

[0015] In some embodiments of the present application, the guide is regularly provided with two pressing feet, and the top surface of the synchronizer is provided with four protrusions corresponding to the two guides; the inner side of the pressing foot is provided with a first inclined guide surface, and the outer side of the protrusion is provided with a second inclined guide surface adapted to the first inclined guide surface.

[0016] In the present application, the guide is provided with two pressing feet, which is the preferred solution. The symmetric arrangement of the guide and the action of the pressing foot make the entire pencil insertion guide assembly more stable during operation, reducing the problem of insecure clamping caused by uneven movement.

[0017] In the present application, the first inclined guide surface and the second inclined guide surface are added, so that the pressing foot moves to the outer edge of the protrusion, and the guide can smoothly move upward along the inclined guide surface, and the first pencil insertion rubber roller and the second pencil insertion rubber roller expand. The above design can prevent the phenomenon of jamming during pencil insertion, ensure smooth insertion and withdrawal of the pencil, and improve the reliability of the device.

[0018] In some embodiments of the present application, the present application further comprises a middle seat, wherein a sliding groove is arranged on the middle seat in a radial direction, and the guide is mounted on the sliding groove and moves along the sliding groove under force. The design of the sliding groove provides a stable movement track for the guide, reduces the shaking or deviation of the guide during movement, and ensures the stability of the pencil sharpener. The movement of the guide in the sliding groove can more effectively transmit the force when the pencil is inserted, ensure the uniformity and stability of the clamping force, and improve the performance of the pencil sharpener.

[0019] In some embodiments of the present application, an inclined groove is arranged on the guide, and the two guides are connected by a driving piece, wherein the driving piece is arranged on the guide, and the bottom surface of the driving piece is symmetrically provided with two convex columns which are respectively inserted into the inclined grooves of the two guides.

[0020] The present application realizes the synchronous opening and closing of the two guides by arranging the driving piece. This design improves the coordination of the pencil sharpener when clamping the pencil and enhances the overall working efficiency. In addition, the guide can flexibly adjust the position according to the diameter of the pencil, and adapt to different types of pencils.

[0021] In some embodiments of the present application, the driving piece is connected with a driving spring, and the driving spring applies a force to the driving piece to maintain the clamping state of the two guides. The combination of the driving piece and the driving spring reduces the complexity of mechanical parts, makes the overall structure more compact, and reduces the difficulty of manufacturing and maintenance.

[0022] In some embodiments of the present application, the present application further comprises a base, wherein the pencil feeding driving assembly and the synchronous piece are arranged in the base, and the synchronous piece has a circular ring structure. The base provides a firm support for the pencil feeding driving assembly and the synchronous piece, enhances the structural stability of the entire pencil sharpener, and reduces the vibration and displacement during use. The stability and reasonable layout of the base enable the user to obtain a better operation experience when using the pencil sharpener, and reduce the inconvenience caused by unstable equipment.

[0023] On the basis of common knowledge in the art, the above-mentioned embodiments can be combined arbitrarily. BRIEF DESCRIPTION OF DRAWINGS

[0024] The present application will be further described in detail below in conjunction 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 show the composition or structure of the described objects and can include exaggerated displays, and the drawings are not necessarily drawn to scale.

[0025] Figure 1 The structural schematic diagram of the present application;

[0026] Figure 2 This is a schematic diagram of the internal structure of this application;

[0027] Figure 3 for Figure 2 A schematic diagram of the decomposed structure;

[0028] Figure 4 A schematic diagram of the pen feed drive assembly mounted on the base;

[0029] Figure 5 This is a schematic diagram showing the connection status of the guide component and the synchronization component.

[0030] The specific explanations of the reference numerals in the attached drawings are as follows: 1. Synchronizing component; 2. Pen feed drive assembly; 3. Pen feed guide assembly; 4. First pen feed roller; 5. Second pen feed roller; 6. Guide groove assembly; 7. Guide component; 8. Presser foot; 9. Elastic component; 10. Center seat; 11. Slide groove; 12. Drive plate; 13. Protrusion; 14. Drive spring; 15. Base; 16. Pencil; 17. Protrusion; 18. Inclined groove. Detailed Implementation

[0031] The present application will now be described in detail with reference to the accompanying drawings.

[0032] 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.

[0033] Pencil sharpener feed box, Example 1 as follows Figures 1 to 3 As shown, the device includes a synchronizing component 1, a pen-feeding drive assembly 2, and a pen-feeding guide assembly 3. The pen-feeding drive assembly 2 is normally in a retracted state. When pushed by the insertion of the pencil 16, the pen-feeding drive assembly 2 expands outward. Both ends of the pen-feeding drive assembly 2 are mounted on the synchronizing component 1. The outward expansion of the pen-feeding drive assembly 2 drives the synchronizing component 1 to move. The pen-feeding guide assembly 3 is mounted on the synchronizing component 1 and acts on the synchronizing component 1, restricting the synchronizing component 1 from moving in the retracted state. By restricting the movement of the synchronizing component 1 through the pen-feeding guide assembly 3, the pen-feeding component is kept in the retracted state. Therefore, when inserting a small-diameter pencil 16, the pen-feeding drive assembly 2 can provide a large clamping force, ensuring stable and reliable pen insertion and withdrawal. The setting of the pen-feeding guide assembly 3 restricts the movement of the synchronizing component 1, allowing the pen-feeding drive assembly 2 to remain stable in the retracted state, ensuring that the pencil 16 will not become unstable during insertion and withdrawal.

[0034] A set of guide grooves 6 is provided on both sides of the synchronizing component 1. The guide grooves 6 include two guide grooves that are inclined and symmetrically arranged. The pen feeding drive assembly 2 includes a first pen feeding roller 4 and a second pen feeding roller 5. The ends of the first pen feeding roller 4 and the second pen feeding roller 5 are respectively installed in the two symmetrically arranged guide grooves. When the first pen feeding roller 4 and the second pen feeding roller 5 expand outward, they drive the synchronizing component 1 to move upward. An elastic element 9 is installed on the synchronizing component 1. The elastic element 9 applies a force to the synchronizing component 1 to move downward, driving the first pen feeding roller 4 and the second pen feeding roller 5 to remain in a closed state.

[0035] In this application, the force used by the first and second pen-feeding rollers to hold the pencil 16 comes from the elastic element 9, which can be a linear spring. However, the clamping force provided by the spring has the problem that it is sufficient for pencils with larger diameters but insufficient for pencils with smaller diameters. Therefore, this application further adds a pen-feeding guide assembly 3 acting on the synchronizing element 1 based on the elastic element 9. The pen-feeding guide assembly 3 limits the synchronizing element 1. When the diameter of the inserted pencil is small, the synchronizing element 1 remains in the retracted position, providing sufficient clamping force.

[0036] Example 2, as Figures 3 to 5 As shown, the pen feeding guide assembly 3 includes two symmetrically arranged guide members 7. Each guide member 7 is equipped with a pressure foot 8, which acts on the top surface of the synchronizing member 1 to restrict its upward movement. By setting the pressure foot 8, the upward movement of the synchronizing member 1 can be effectively restricted, thereby maintaining the retracted state of the pen feeding drive assembly 2. This design ensures that the pen feeding drive assembly 2 can provide a stable clamping force when the pencil 16 is inserted.

[0037] Under normal conditions, the two guide members 7 are close together. When the pencil 16 is inserted between the two guide members 7, it drives the two guide members 7 to move outward. After the guide members 7 have moved outward a predetermined distance, the pressure foot 8 disengages from the synchronizing member 1. That is to say, when the diameter of the pencil 16 reaches the predetermined value and is inserted into the two guide members 7, the pressure foot 8 on the guide member 7 will disengage from the synchronizing member 1, and the synchronizing member 1 will be in a free state. At this time, the force of the first pen feed roller 4 and the second pen feed roller clamping the pencil 16 comes from the elastic member 9.

[0038] In this application, the preferred embodiment is that when the diameter of the pencil 16 is greater than 8mm, the pressure foot 8 on the guide 7 disengages from the synchronization member 1. When the diameter of the pencil 16 is less than or equal to 8mm, the pressure foot 8 on the guide 7 presses against the synchronization member 1, restricting the pencil feed drive assembly 2 from being in a retracted state to clamp the pencil 16, ensuring that the small-diameter pencil 16 is subjected to sufficient clamping force. This design can accommodate pencils 16 of different diameters and shapes, improving the versatility of the pencil sharpener and meeting the diverse needs of the market for pencils 16.

[0039] The top surface of the synchronizer 1 is provided with a protrusion 13, which is adapted to the presser foot 8 of the guide 7, and the bottom surface of the presser foot 8 of the guide 7 is in contact with the top surface of the protrusion 13. Through the contact between the protrusion 13 and the presser foot 8, the force generated when the pencil 16 is inserted can be more effectively transmitted to the synchronizer 1, improving the uniformity and stability of the clamping force.

[0040] Two presser feet 8 are regularly arranged on the guide 7, and four protrusions 13 are arranged on the top surface of the synchronizer 1 corresponding to the two guides 7; the inner side of the presser foot 8 is provided with a first inclined guide surface arranged obliquely, and the outer side of the protrusion 13 is provided with a second inclined guide surface adapted to the first inclined guide surface. In this application, it is preferred that the guide 7 is provided with two presser feet 8. The symmetrical arrangement of the guide 7 and the action of the presser foot 8 make the entire pencil guiding assembly 3 more stable during operation, reducing the problem of insecure clamping caused by uneven movement.

[0041] In this application, the first inclined guide surface and the second inclined guide surface are added, so that the presser foot 8 moves to the outer edge of the protrusion 13, and the guide 7 can smoothly move upward along the inclined guide surface, and the first pencil guiding rubber roller 4 and the second pencil guiding rubber are expanded. The above design can prevent the phenomenon of jamming during the insertion of the pencil 16, ensure the smoothness of the pencil insertion and removal, and improve the reliability of the equipment.

[0042] The other contents of Example Two are the same as those of Example One.

[0043] As shown in Example Three, Figures 3 to 5 The present application further comprises a middle seat 10, which is provided with a sliding groove 11 arranged in the radial direction, and the guide 7 is installed on the sliding groove 11 and moves along the sliding groove 11 under the action of force. The design of the sliding groove 11 provides a stable movement track for the guide 7, reduces the shaking or deviation of the guide 7 during movement, and ensures the stability of the pencil sharpener. The movement of the guide 7 in the sliding groove 11 can more effectively transmit the force when the pencil 16 is inserted, ensuring the uniformity and stability of the clamping force and improving the performance of the pencil sharpener.

[0044] The guide 7 is provided with an inclined slot 18, and the two guides 7 are connected by a driving piece 12, which is arranged on the guide 7. The bottom surface of the driving piece 12 is symmetrically provided with two protruding columns 17, which are respectively inserted into the inclined slots 18 of the two guides 7. By arranging the driving piece 12, the synchronous opening and closing of the two guides 7 is realized. This design improves the coordination of the pencil sharpener when clamping the pencil 16, enhances the overall working efficiency, and the guide 7 can flexibly adjust the position according to the diameter of the pencil 16, adapting to different types of pencils 16.

[0045] The driving piece 12 is connected with a driving spring 14, which applies a force to the driving piece 12 to keep the two guiding pieces 7 in a clamping state. The design of combining the driving piece 12 with the driving spring 14 reduces the complicated mechanical components, makes the overall structure more compact, and reduces the difficulty of manufacturing and maintenance.

[0046] The application also includes a base 15, in which the pen feeding driving assembly 2 and the synchronizing piece 1 are arranged. The synchronizing piece 1 has a circular ring structure. The base 15 provides a firm support for the pen feeding driving assembly 2 and the synchronizing piece 1, enhances the structural stability of the whole pencil sharpener, and reduces the vibration and displacement during use. The stability and reasonable layout of the base 15 enable the user to obtain a better operation experience when using the pencil sharpener, and reduce the inconvenience caused by the instability of the equipment.

[0047] The other contents of the third embodiment are the same as those of the first embodiment or the second embodiment.

[0048] The above has described the application in detail, and the principles and implementation modes of the application are described by applying specific examples. The above description of the embodiments is only used to help understand the application and the core idea. It should be pointed out that, for those skilled in the art, without departing from the principles of the application, the application can be improved and modified in several ways, and these improvements and modifications also fall within the protection scope of the claims of the application.

Claims

1. A sharpener pencil case, characterized in that, The utility model provides a pencil lead feeding device, including synchronous part (1), pencil lead feeding drive assembly (2) and pencil lead feeding guide assembly (3), the both ends of pencil lead feeding drive assembly (2) are installed on synchronous part (1), the normal state of pencil lead feeding drive assembly (2) is retracted state, pencil lead feeding drive assembly (2) is pushed by pencil (16) insertion and then expands outward, pencil lead feeding drive assembly (2) expands outward and drives synchronous part (1) to move, the pencil lead feeding guide assembly (3) is erected on synchronous part (1), and pencil lead feeding guide assembly (3) acts on synchronous part (1) and limits synchronous part (1) to be in the position of the retracted state of pencil lead feeding drive assembly (2).

2. The sharpener pencil box according to claim 1, wherein The both sides wall of synchronous part (1) is provided with a group of guide groove groups (6), and the guide groove groups (6) include two guide grooves that are inclinedly arranged and symmetrically arranged, the pencil lead feeding drive assembly (2) includes a first pencil lead feeding rubber roller (4) and a second pencil lead feeding rubber roller (5), the ends of the first pencil lead feeding rubber roller (4) and the second pencil lead feeding rubber roller (5) are respectively installed in the two guide grooves that are symmetrically arranged, the first pencil lead feeding rubber roller (4) and the second pencil lead feeding rubber roller (5) expand outward and then drive synchronous part (1) to move upward, the synchronous part (1) is provided with an elastic member (9), the elastic member (9) applies a downward moving force to synchronous part (1) and drives the first pencil lead feeding rubber roller (4) and the second pencil lead feeding rubber roller (5) to keep a mutual retracted state.

3. A sharpener pencil box according to claim 1 or 2, characterized in that The pencil lead feeding guide assembly (3) includes two guide members (7) that are symmetrically arranged, the guide members (7) are provided with pressing feet (8), the pressing feet (8) act on the top surface of synchronous part (1) and limit synchronous part (1) to move upward.

4. The sharpener refill according to claim 3, wherein Under normal circumstances, the two guide members (7) are close to each other, and when the pencil (16) is inserted between the two guide members (7), the two guide members (7) are driven to move outward, and after the guide members (7) move outward by a predetermined distance, the pressing feet (8) are separated from synchronous part (1).

5. The sharpener pencil box of claim 3, wherein, The top surface of the synchronous part (1) is provided with a protrusion (13), and the protrusion (13) is adapted to the pressing feet (8) of the guide members (7), and the bottom surface of the pressing feet (8) of the guide members (7) is in contact with the top surface of the protrusion (13).

6. The sharpener pencil box of claim 3, wherein, The guide members (7) are regularly provided with two pressing feet (8), and the top surface of the synchronous part (1) is provided with four protrusions (13) corresponding to the two guide members (7); the inner side of the pressing feet (8) is provided with an inclined first inclined guide surface, and the outer side of the protrusion (13) is provided with a second inclined guide surface adapted to the first inclined guide surface.

7. The sharpener refill according to claim 3, wherein The utility model also includes a middle seat (10), the middle seat (10) is provided with a sliding groove (11) arranged along the radial direction, the guide members (7) are installed on the sliding groove (11), and the guide members (7) move along the sliding groove (11) under the action of force.

8. The sharpener pencil box of claim 3, wherein, The guide members (7) are provided with inclined grooves (18), the two guide members (7) are connected through a driving piece (12), the driving piece (12) is erected on the guide members (7), the bottom surface of the driving piece (12) is symmetrically provided with two protruding columns (17), and the two protruding columns (17) are respectively inserted into the inclined grooves (18) of the two guide members (7).

9. The sharpener refill according to claim 8, wherein The driving piece (12) is connected with a driving spring (14), and the driving spring (14) applies a force to the driving piece (12) to keep the two guide pieces (7) in a clamped state.

10. The sharpener pencil box of claim 1, wherein, The pen-driving assembly (2) and the synchronizer (1) are arranged in the base (15), and the synchronizer (1) has a whole circular ring structure.

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