A pencil sharpener linkage unlocking device, a pencil sharpener core and a pencil sharpener

Abstract

The application discloses a linkage unlocking device of a pencil sharpener, a pencil sharpener core and a pencil sharpener, comprising a pencil tip baffle (1) and unlocking blocks (2) located on both sides of the pencil tip baffle (1), characterized in that: linkage devices for driving each other are arranged between the two unlocking blocks (2), and any unlocking block (2) can drive the other unlocking block (2) to be unlocked through the linkage devices. Compared with the prior art, the linkage device can ensure that the two unlocking blocks are unlocked at the same time, and the situation that the pencil cannot be sharpened and cannot be retracted can be avoided. The pencil sharpener linkage unlocking device, the pencil sharpener core and the pencil sharpener have the advantages of simple structure, simultaneous unlocking of the two unlocking blocks and prevention of the situation that the pencil cannot be sharpened and cannot be retracted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pencil sharpener, in particular to a linkage unlocking device of an automatic advance and retreat pencil pencil sharpener, a pencil sharpener core and a pencil sharpener. BACKGROUND

[0002] The pencil sharpener is a common stationery for sharpening pencils. The pencil sharpener in the prior art has various structures, and most of them are manually operated for cutting. The manual pencil sharpener is divided into automatic advance and retreat pencil type and semi-automatic advance pencil type. After the pencil is inserted into the automatic advance and retreat pencil type, the pencil can be advanced and sharpened by shaking the handle, and the pencil can be automatically retreated after being sharpened. This structure has more advantages than the semi-automatic advance pencil type. After being sharpened, the pencil needs to be pulled out, and the pencil tip is easily broken during the pulling process. The pencil sharpener of the automatic advance and retreat pencil type can solve this problem, and the automatic retreat of the pencil will not cause the bending of the sharpened pencil tip.

[0003] In the prior art, the automatic advance and retreat pencil pencil sharpener, the two sides of the movable support are clamped and fixed with the fixed support during the process of advancing and sharpening the pencil. The fixed support is provided with a corresponding unlocking block and a pencil tip blocking block. After the pencil is sharpened, the pencil tip blocking block drives the unlocking block to be unlocked, and the movable support is separated from the fixed support to realize the automatic retreat of the pencil after being unlocked. However, the structure in the prior art often causes unilateral unlocking. Since the movable support is only unlocked on one side, the other side of the unilateral unlocking movable support is still clamped with the fixed support. At this time, the pencil cannot be automatically retreated, and the pencil sharpener cannot be both sharpened and retreated. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the above technical problems, and to provide a pencil sharpener linkage unlocking device which is simple in structure, can simultaneously unlock two unlocking blocks, and can prevent the occurrence of both sharpening and retreating.

[0005] To solve the above technical problems, the technical solution provided by the present application is as follows: a pencil sharpener linkage unlocking device, comprising a pencil tip blocking block and unlocking blocks located on both sides of the pencil tip blocking block, and a linkage device for driving each other between the two unlocking blocks. Any unlocking block can be unlocked to drive the other unlocking block to be unlocked through the linkage device.

[0006] Compared with the prior art, the linkage device of the present application can ensure that the two unlocking blocks are simultaneously unlocked, avoid unilateral unlocking, and prevent the pencil from being unable to be sharpened and idling and unable to be retreated.

[0007] As an improvement, the linkage device is a gear ring matched with the two unlocking blocks, and each of the two unlocking blocks is provided with a rotating tooth matched with the gear ring. Since the fixed support has a tool holder and the internal tool holder rotates during use, the gear ring structure occupies less space and is easy to install.

[0008] As an improvement, the outer circumference of the gear ring is provided with a circumferential tooth extending downward, and the rotating tooth is engaged with the circumferential tooth. The teeth matched with the unlocking block are not arranged inside or outside the gear ring, but arranged below the gear ring. This structure can avoid arranging the unlocking block on the outside or inside of the gear ring, and the unlocking block is arranged below the gear ring, so that the gear ring can be directly fixed in the fixed support without affecting the unlocking block to rotate to lift the movable support to be unlocked.

[0009] As an improvement, the gear ring is partially provided with a tooth structure. The unlocking block has a small volume and a small rotation angle during unlocking, so that fewer teeth matched with the gear ring are required, and therefore the entire gear ring does not need to be provided with matched teeth, the machining cost can be reduced, and the gear ring is better installed in the fixed support.

[0010] As an improvement, the linkage device is a gear structure matched with two unlocking blocks, and the two unlocking blocks are both provided with a rotating tooth structure matched with the gear.

[0011] Another technical problem to be solved by the present application is to overcome the above technical problems, and to provide a pencil sharpener core which is simple in structure, can simultaneously unlock two unlocking blocks, and can prevent the situation that the pencil cannot be sharpened and cannot be retracted.

[0012] To solve the above technical problems, another technical scheme provided by the present application is a pencil sharpener core, which comprises a fixed plate, a movable support, a fixed support and a rocker arm arranged in sequence, the fixed plate is provided with a pencil retraction gear, the end of the fixed support is provided with a pencil feeding gear, the movable support is provided with a rubber wheel for driving the pencil to feed and retract between the pencil retraction gear and the pencil feeding gear, the movable support is provided with a fixed shaft, an unlocking block and a return spring, the fixed support is provided with buckles buckled on both sides of the movable support, the inside of the fixed support is provided with a cutter holder and a pencil tip stopper, the cutter holder is driven to rotate by the rocker arm, and the pencil sharpener core further comprises a linkage unlocking device of the above structure.

[0013] Compared with the prior art, the linkage device of the pencil sharpener core of the present application can ensure that the two unlocking blocks are simultaneously unlocked, and can avoid the situation that the pencil cannot be sharpened and cannot be retracted.

[0014] As an improvement, the linkage device is arranged in the fixed support and connected with the fixed support, and the structure is simple.

[0015] As an improvement, the rubber wheel is provided with transmission teeth engaged with the pencil retraction gear and the pencil feeding gear on both sides.

[0016] As improvement, the fixed shaft is provided with a first retraction transmission gear engaging with the lead-in gear and a second retraction transmission gear engaging with the retraction gear, and the first retraction transmission gear is connected with the second retraction transmission gear. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of a linkage unlocking device of a pencil sharpener.

[0018] Figure 2 is a front view of a linkage unlocking device of a pencil sharpener.

[0019] Figure 3 is a structural schematic view of a locked state of a pencil sharpener core.

[0020] Figure 4 is a structural schematic view of an unlocked state of a pencil sharpener core.

[0021] As shown in the drawings: 1, a pencil tip stop block, 2, an unlocking block, 3, a gear ring, 4, a rotating tooth, 5, a circumferential tooth, 6, a fixed plate, 7, a movable support, 8, a fixed support, 9, a rocker arm, 10, a retraction gear, 11, a lead-in gear, 12, a rubber wheel, 13, a fixed shaft, 14, a return spring, 15, a buckle, 16, a cutter holder, 17, a first retraction transmission gear, 18, a second retraction transmission gear. DETAILED DESCRIPTION

[0022] The application will be further described in detail below with reference to the drawings.

[0023] In combination with the drawings, Figures 1-2 The application discloses a linkage mechanism of an unlocking block of a pencil sharpener, Figure 3 and Figure 4 As shown in the drawings, a structural schematic view of a pencil sharpener core, Figure 3 and Figure 4 is a structural schematic view of a structure for removing an external shell and a sawdust box.

[0024] As Figure 1 and Figure 2 shown, a linkage unlocking device of a pencil sharpener includes a pencil tip stop block 1 and unlocking blocks 2 located on both sides of the pencil tip stop block 1, respectively, a linkage device for driving each other is arranged between the two unlocking blocks 2, and any unlocking block 2 can drive the other unlocking block 2 to unlock through the linkage device.

[0025] The linkage device is a gear ring 3 matched with the two unlocking blocks 2, and rotating teeth 4 matched with the gear ring 3 are arranged on the two unlocking blocks 2. The gear ring 3 is provided with circumferential teeth 5 extending downward on an outer circumference, and the rotating teeth 4 engage with the circumferential teeth 5. The gear ring 3 is partially provided with a tooth structure.

[0026] In specific embodiments, the linkage is a gear structure cooperating with two unlocking blocks 2, both of which are provided with rotating tooth structures cooperating with the gear. This structure is not shown in the drawings, but it can be understood that it achieves the linkage purpose through one or more gear transmissions.

[0027] The principle of the linkage unlocking device of the present application is as follows: in the initial state, the pencil tip stopper and the unlocking block have a certain distance, and the pencil tip stopper 1 moves in the direction of approaching the unlocking block during the pencil sharpening process of the pencil sharpener. After the cutting is completed, the pencil tip stopper reaches the unlocking block, and the pencil tip stopper rotates to drive the unlocking block to rotate, as shown in Figure 1 and Figure 2 The structure of the unlocking block, the unlocking block rotates, the protrusion on the unlocking block lifts the movable support, and the movable support is separated from the buckle on the fixed support to achieve unlocking. When only one side of the unlocking block is unlocked, the rotating teeth 4 on the unlocking block engage the circular teeth 5 to drive the gear ring 3 to rotate, thereby driving the unlocking block on the other side to rotate to unlock. It can be ensured that both unlocking blocks 2 are unlocked at the same time, and the situation that the movable support cannot be unlocked is avoided.

[0028] As shown in Figure 3 and Figure 4 A pencil sharpener core, comprising a fixed plate 6, a movable support 7, a fixed support 8 and a rocker arm 9 arranged in sequence, the fixed plate 6 is provided with a pencil returning gear 10, the end of the fixed support 8 is provided with a pencil feeding gear 11, the movable support 7 is provided with a rubber wheel 12 for driving the pencil to advance and retreat between the pencil returning gear 10 and the pencil feeding gear 11, the movable support 7 is provided with a fixed shaft 13, an unlocking block 2 and a reset spring 14, the fixed support 8 is provided with a buckle 15 buckled on both sides of the movable support 7, the fixed support 8 is provided with a tool holder 16 and a pencil tip stopper 1 inside, the tool holder 16 is driven to rotate by the rocker arm 9, characterized in that it further comprises the linkage unlocking device described above.

[0029] The linkage device is arranged in the fixed support 8 and connected with the fixed support 8.

[0030] The rubber wheel 12 is provided with transmission teeth on both sides for engaging with the pencil returning gear 10 and the pencil feeding gear 11.

[0031] The fixed shaft 13 is provided with a pencil returning transmission gear one 17 engaging with the pencil feeding gear 11 and a pencil returning transmission gear two 18 engaging with the pencil returning gear 10, and the pencil returning transmission gear one 17 is connected with the pencil returning transmission gear two 18.

[0032] The specific working process of the pencil sharpener is as follows:

[0033] Initial state: when the pencil sharpener is not in use, the shell outside the core is in a merged state, the movable support is on the left side, the transmission teeth on the rubber wheel engage with the pencil returning gear, and the buckle points on both sides of the movable support are not buckled at this time.

[0034] After inserting the pencil, the movable support is manually moved to the right, and the two buckling points on both sides are buckled when the movable support is in place. The transmission teeth on the rubber wheel are engaged with the pencil feeding gear. At this time, the pencil tip stopper is away from the unlocking block. In this state, the pencil can be sharpened by shaking the rocker arm.

[0035] When sharpening the pencil, the pencil is fed and cut by shaking the rocker arm. When the pencil is fed, the pencil tip stopper moves forward. After the pencil is sharpened, the interactive support is still buckled in the buckle position. The transmission teeth on the rubber wheel are engaged with the pencil feeding gear. The pencil tip stopper has been moved to the unlocking block position, as shown in Figure 3 . At this time, continue to shake the rocker arm to rotate the unlocking block to unlock the buckle position, as shown in Figure 4 .

[0036] Unlocking state: After the pencil tip stopper hits the unlocking block, the unlocking block rotates. The unlocking block pushes the buckle position on both sides of the movable support out until it is separated from the buckle point to complete the unlocking. After unlocking, the unlocking block and the movable support are reset to the left under the action of the reset spring and retreat to the initial position.

[0037] Retracting the pencil state: After the movable support is reset, the transmission teeth on the rubber wheel are engaged with the pencil retraction gear. Continue to shake the rocker arm. The pencil feeding gear is engaged with the pencil retraction transmission gear, thereby driving the pencil retraction transmission gear two to rotate. The pencil retraction transmission gear two is engaged with the pencil retraction gear to drive the pencil retraction gear to rotate. The pencil retraction gear drives the transmission teeth on the rubber wheel to rotate to achieve automatic pencil retraction.

[0038] The application also discloses a pencil sharpener, which comprises a shell, and a pencil sharpener core with the above structure is installed in the shell.

[0039] The above description of the application and its embodiments is not restrictive, and the embodiments shown in the drawings are only one of the embodiments of the application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the purpose of the application, without creative design, similar structure and embodiments of the technical solution can be designed, which should belong to the protection scope of the application.

Claims

1. A pencil sharpener linkage unlocking device, comprising a pencil tip stop (1) and unlocking blocks (2) respectively located on both sides of the pencil tip stop (1), characterized in that: A linkage device is provided between the two unlocking blocks (2) to drive each other. When only one unlocking block can be unlocked, the unlocking of any one unlocking block (2) can drive the other unlocking block (2) to unlock through the linkage device. The linkage device is a gear ring (3) that cooperates with the two unlocking blocks (2). Both unlocking blocks (2) are provided with rotating teeth (4) that cooperate with the gear ring (3). Alternatively, the linkage device is a gear structure that cooperates with the two unlocking blocks. Both unlocking blocks are provided with rotating teeth structure that cooperates with the gear.

2. The pencil sharpener linkage unlocking device according to claim 1, characterized in that: The outer circumference of the gear ring (3) is provided with circumferential teeth (5) extending down, and the rotating teeth (4) mesh with the circumferential teeth (5).

3. The pencil sharpener linkage unlocking device according to claim 1, characterized in that: The toothed ring (3) has a partially toothed structure.

4. A pencil sharpener mechanism, comprising a fixed plate (6), a movable bracket (7), a fixed bracket (8), and a rocker arm (9) arranged sequentially, wherein the fixed plate (6) is provided with a retraction gear (10), the fixed bracket (8) is provided with a pen-feeding gear (11) at its end, the movable bracket (7) is provided with a rubber wheel (12) for driving the pencil forward and backward between the retraction gear (10) and the pen-feeding gear (11), the movable bracket (7) is provided with a fixed shaft (13), an unlocking block (2), and a return spring (14), the fixed bracket (8) is provided with buckles (15) that engage with both sides of the movable bracket (7), and the fixed bracket (8) is provided with a blade holder (16) and a pencil tip stop (1) inside the fixed bracket (8), the blade holder (16) being driven to rotate by the rocker arm (9), characterized in that: It also includes the linkage unlocking device described in any one of claims 1-3 above.

5. The pencil sharpener mechanism according to claim 4, characterized in that: The linkage device is installed inside the fixed bracket (8) and connected to the fixed bracket (8).

6. The pencil sharpener mechanism according to claim 4, characterized in that: Both sides of the rubber wheel (12) are provided with transmission teeth that mesh with the pen retraction gear (10) and the pen advance gear (11).

7. The pencil sharpener mechanism according to claim 4, characterized in that: The fixed shaft (13) is provided with a first pen retraction transmission gear (17) that meshes with the pen advance gear (11) and a second pen retraction transmission gear (18) that meshes with the pen retraction gear (10). The first pen retraction transmission gear (17) and the second pen retraction transmission gear (18) are connected.

8. A pencil sharpener, comprising a housing, characterized in that: The housing contains a pencil sharpener mechanism as described in any one of claims 4 to 7.

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