CN219133691U

CN219133691U - Pencil lead thickness adjusting mechanism for pencil sharpener

Info

Publication number: CN219133691U
Application number: CN202222681163.3U
Authority: CN
Inventors: 李伟逸; 孙超杰; 陈强强
Original assignee: Ningbo Sanzhong Stationery Co ltd
Current assignee: Ningbo Sanzhong Stationery Co ltd
Priority date: 2022-10-11
Filing date: 2022-10-11
Publication date: 2023-06-06
Anticipated expiration: 2032-10-11

Abstract

The utility model relates to a pencil lead thickness adjusting mechanism for a pencil sharpener, which comprises a pencil rest, wherein the front part of the pencil rest is provided with a pencil sharpening hole for inserting a pencil, the rear part of the pencil rest is provided with a through hole, and the middle part of the pencil rest is provided with a sliding block capable of sliding forwards and backwards; the rotating seat is connected to the rear part of the tool rest; a driving plate swingably provided on the rotary seat, the driving plate having an adjustment surface inclined in a swinging direction on an inner surface facing the tool holder; the adjusting rod can be arranged in the through hole in a front-back sliding way, the rear end of the adjusting rod can be propped against the adjusting surface of the driving plate, and the front end of the adjusting rod corresponds to the sliding block and protrudes out of the front end of the through hole. The circumference wall of the driving plate is convexly provided with a limiting piece, and a plurality of limiting grooves which can be used for placing the limiting piece are arranged on the rotating seat corresponding to the swinging range of the driving plate. The pencil lead thickness adjusting mechanism for the pencil sharpener has uniform force for rotating the driving plate.

Description

Pencil lead thickness adjusting mechanism for pencil sharpener

Technical Field

The utility model relates to the technical field of pencil sharpening machines, in particular to a pencil lead thickness adjusting mechanism for a pencil sharpening machine.

Background

The pencil sharpener is used for cutting the pencil end part, and then exposing the pencil lead in the pencil center for use, and based on different purposes or user preference, the pencil points with different thicknesses are required to be cut. The prior pencil sharpener can realize the adjustment of the thickness of the pencil point by arranging an adjusting mechanism.

For example, the Chinese patent with the publication number of CN209274234U (201821297238.5) and the Chinese patent with the publication number of CN209938162U (201920238925.8) are respectively provided with an adjusting mechanism for cutting nibs with different thicknesses in the structure of the pencil sharpener, the adjusting mechanism comprises a driving plate, an adjusting rod, a thick movable block and a spring, the driving plate is provided with a spiral surface, the adjusting rod is pressed against the driving plate on the basis of the spring, when the pencil is used, after being inserted into the pencil holder, the pencil is pressed against the adjusting rod against the thick movable block, and the pencil is limited to be inserted into the pencil holder according to the depth of the pencil holder due to the spiral surface of the driving plate, so that the purpose of adjusting the thickness of the cutting nibs is achieved. However, due to the fact that the adjusting rod is propped against the spiral surface of the driving plate by the aid of the spring, relative positioning between the adjusting rod and the driving plate is achieved, when the driving plate is driven, the spring is different in pressure of the adjusting rod based on different positions, and accordingly large difference in driving hand feeling of the driving plate can be caused, and using experience is affected.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a pencil lead thickness adjusting mechanism for a pencil sharpener, which is uniform in force of a rotary driving plate.

The utility model solves the problems by adopting the following technical scheme: a pencil lead thickness adjusting mechanism for pencil sharpener includes

The front part of the tool rest is provided with a pencil sharpening hole for inserting a pencil, the rear part of the tool rest is provided with a through hole, and the middle part of the tool rest is provided with a sliding block capable of sliding forwards and backwards;

the rotating seat is connected to the rear part of the tool rest;

a dial swingably provided on the rotary seat, the dial having an adjustment surface inclined in a swing direction on an inner surface facing the tool holder;

the adjusting rod can be arranged in the through hole in a front-back sliding way, the rear end of the adjusting rod can be propped against the adjusting surface of the driving plate, and the front end of the adjusting rod corresponds to the sliding block and protrudes out of the front end of the through hole;

the method is characterized in that: and a limiting part is convexly arranged on the peripheral wall of the driving plate, and a plurality of limiting grooves for placing the limiting part are formed in the rotating seat corresponding to the swinging range of the driving plate.

In order to reduce the abrasion to the limiting part when the driving plate swings, the service life of the driving plate is prolonged, meanwhile, the long-term limiting reliability of the limiting part and the limiting groove is guaranteed, and a deformable opening is formed in the edge position, close to the limiting part, of the driving plate.

Preferably, the openings are arc-shaped holes.

For the installation of convenient driver plate, make things convenient for the setting of spacing groove simultaneously and with the cooperation relation between the locating part, be equipped with the mounting groove on the rear end face of rotating the seat, the driver plate sets up in the mounting groove, the spacing groove sets up on the perisporium of mounting groove.

In order to ensure the rotation stability of the driving plate, a rotating shaft is arranged in the mounting groove, and the center of the driving plate is sleeved on the rotating shaft.

Preferably, the rear end of the rotating seat is also connected with a cover plate, the driving plate is limited between the rotating seat and the cover plate, and the driving plate is also connected with a driving lever extending out of the rotating seat and the cover plate.

For the convenience of users to know the specific nib thickness gear adjustment, the cover plate is provided with gear marks for indicating the deflector rod to swing to different nib thickness gears.

In order to ensure the stability of the limiting rod in the through hole and avoid the limiting rod from falling out of the through hole, a sealing plate is arranged at the front end of the through hole in a covering manner;

the adjusting rod comprises a main body matched with the diameter of the through hole, a first rod body connected to the front end of the main body and a second rod body connected to the rear end of the main body, the first rod body penetrates to the front side of the sealing plate corresponding to the position of the sliding block, and the second rod body penetrates into the mounting groove.

In order to conveniently realize the rotation operation of the rotation seat, the rotation seat is also connected with a handle part.

Preferably, the adjustment surface on the dial includes a plurality of inclined surfaces connected in a stepped manner.

Compared with the prior art, the utility model has the advantages that: according to the pencil lead thickness adjusting mechanism for the pencil sharpener, the relative limit between the adjusting rod and the driving plate is not required to be realized through the spring, the adjusting rod in the pencil lead thickness adjusting mechanism for the pencil sharpener is not required to be limited, the limit of the driving plate on the rotating seat is realized only through the structures of the limiting piece and the limiting groove, the backward moving range of the adjusting rod can be effectively limited, the backward moving position of the sliding block is further limited, and the pencil lead thickness adjustment during pencil sharpening is realized. And this a thick and thin adjustment mechanism of refill for cutting machine, when carrying out the gear operation of driver plate, because need not to receive the spring pressure of spring to adjusting lever for the driver plate stirs the dynamics of arbitrary gear balanced, stirs the feel and has not had the difference, has promoted the use and has experienced.

Drawings

Fig. 1 is a perspective view of a cartridge thickness adjusting mechanism for a pencil sharpener in accordance with an embodiment of the present utility model.

Fig. 2 is a sectional view of a cartridge thickness adjusting mechanism for a pencil sharpener in accordance with an embodiment of the present utility model.

Fig. 3 is an exploded perspective view of a cartridge thickness adjusting mechanism for a pencil sharpener in accordance with an embodiment of the present utility model.

Fig. 4 is another view of fig. 3.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

As shown in fig. 1 to 4, the pen core thickness adjusting mechanism for a pencil sharpener in this embodiment includes a cutter holder 1, a rotary base 2, a dial 3, and an adjusting lever 4. When the pencil lead thickness adjusting mechanism is used on a pencil sharpener, the pencil lead thickness adjusting mechanism can be matched with a gear ring 6 arranged on a machine shell and a hob arranged on a tool rest 1 for use, and the hob and the gear ring 6 are meshed for transmission.

The whole knife rest 1 is divided into a front part, a middle part and a rear part, wherein the front part of the knife rest 1 is provided with a pencil sharpening hole 11 for inserting a pencil, the pencil sharpening hole 11 is a taper hole in the prior art, and a strip-shaped notch is formed on the side wall of the pencil sharpening hole 11 facing the hob so that the hob contacts with a pencil point in the pencil sharpening hole 11 to cut the pencil point. When in use, the longer the pen is inserted into the pencil sharpening hole 11, the thinner the correspondingly processed pencil lead is. The rear part of the tool rest 1 is provided with a through hole 12 which penetrates through the tool rest in the front-rear direction. The middle part of knife rest 1 is equipped with but the slider 13 of back and forth sliding, and with prior art, the guiding hole has been seted up along the fore-and-aft direction in slider 13 both sides to the middle part of knife rest 1, and slider 13 both sides are equipped with the spacing foot that is spacing in the guiding hole respectively. After the pen is inserted into the pencil hole 11, the end of the pen can push the slider 13 to move backward. The length of the pen inserted into the pencil hole 11 is limited based on the distance the slider 13 can be moved backward.

The rotating seat 2 is connected to the rear part of the cutter rest 1, the rotating seat 2 is rotatably arranged on the gear ring 6, when the rotating seat 2 rotates, the cutter rest 1 can be driven to synchronously rotate, the cutter rest 1 rotates to synchronously rotate, after the cutter rotates, the rotation of the cutter is realized based on the meshing relationship with the gear ring 6, and then the cutting of the pen point in the pen cutting hole 11 is realized. In order to facilitate the rotation operation of the rotation seat 2, the rotation seat 2 is further connected with a handle portion 25, and a user holds the handle portion 25 to perform the rotation operation of the rotation seat 2.

The dial 3 is swingably provided on the rotary seat 2, and an inner surface of the dial 3 facing the holder 1 has an adjustment surface 31 inclined in a swinging direction, so that a distance between the dial 3 and a rear end of the pencil hole 11 is made different when different positions on the dial 3 face the holder 1. In this embodiment, the adjusting surface 31 on the dial 3 includes a plurality of inclined surfaces connected in a step shape, the connecting step surfaces between the inclined surfaces are used for the rear end of the adjusting rod 4 to abut, and the inclined surfaces between the step surfaces can avoid the condition that the rear end of the adjusting rod 4 is blocked.

In order to conveniently realize the positioning of the position of the driving plate 3, a limiting piece 32 is convexly arranged on the peripheral wall of the driving plate 3, and a plurality of limiting grooves 21 for placing the limiting piece 32 are arranged on the rotating seat 2 corresponding to the swinging range of the driving plate 3. When the limit pieces 32 of the dial 3 are placed in different limit grooves 21, different active surface positions on the dial 3 face the rear end of the adjusting lever 4. The driving plate 3 and the rotating seat 2 are made of plastic materials, and relative limit can be realized between the driving plate 3 and the rotating seat 2 through a certain gap and plastic deformation. But if no deforming structure is provided, the wear on the stopper 32 is large. In order to reduce the abrasion to the limiting piece 32 when the driving plate 3 swings, improve the service life of the driving plate, ensure the reliability of long-term limiting of the limiting piece 32 and the limiting groove 21, and provide a deformable opening 33 on the driving plate 3 near the edge of the limiting piece 32, wherein the opening 33 forms a deformable area of the limiting piece 32, and specifically, the opening 33 is an arc-shaped hole. When the dial 3 is shifted, when the limiting piece 32 rotates to a position which is not the limiting groove 21, the rotating seat 2 can spring the limiting piece 32 inwards in a radial direction based on the opening 33, and when the limiting piece 32 rotates to the position of the limiting groove 21, the limiting piece 32 is reset to spring into the limiting groove 21, and the relative positioning of the dial 3 on the rotating seat 2 is realized based on the limiting groove 21 and the limiting piece 32.

In order to facilitate the installation of the driving plate 3, and simultaneously facilitate the setting of the limiting groove 21 and the matching relation between the limiting piece 32, the rear end surface of the rotating seat 2 is provided with a mounting groove 22, the driving plate 3 is arranged in the mounting groove 22, and the limiting groove 21 is arranged on the peripheral wall of the mounting groove 22. In order to ensure the rotation stability of the driving plate 3, a rotating shaft 23 is arranged in the mounting groove 22, and the center of the driving plate 3 is sleeved on the rotating shaft 23. In addition, the rear end of the rotary seat 2 is also connected with a cover plate 5, the driving plate 3 is limited between the rotary seat 2 and the cover plate 5, the driving plate 3 is prevented from falling out of the rotary seat 2, and meanwhile, the stability of the rotation direction of the driving plate 3 is also ensured. The dial plate 3 is also connected with a dial rod 34 extending out of the rotating seat 2 and the cover plate 5, and the dial rod 34 is convenient for a user to dial.

In order to facilitate the user to know about the specific nib thickness gear adjustment, the cover plate 5 is provided with a gear mark 51 for indicating the shift lever 34 to swing to different nib thickness gears. Based on the gear indicia 51, the user may toggle the lever 34 to the corresponding gear position.

The adjusting rod 4 can slide back and forth and is arranged in the through hole 12, the rear end of the adjusting rod 4 can be abutted against the adjusting surface 31 of the dial 3, and the front end of the adjusting rod 4 corresponds to the sliding block 13 and protrudes out of the front end of the through hole 12. The adjustment lever 4 can be adjusted in its position in the through hole 12 based on the adjustment surface 31 of the dial 3. In order to ensure the stability of the setting of the limiting rod in the through hole 12, the limiting rod is prevented from falling out of the through hole 12, a sealing plate 121 is arranged at the front end of the through hole 12 in a covering manner, and the sealing plate 121 can be integrally arranged on the rotating seat 2.

The adjusting rod 4 further includes a main body 41 having a diameter matching the diameter of the through hole 12, a first rod body 42 connected to the front end of the main body 41, and a second rod body 43 connected to the rear end of the main body 41, wherein the first rod body 42 is inserted into the front side of the sealing plate 121 corresponding to the position of the slider 13, and the second rod body 43 is inserted into the mounting groove 22. This facilitates the correspondence between the first lever 42 and the slider 13, and also facilitates the correspondence between the second lever 43 and the active surface on the dial 3.

When the pencil lead thickness adjusting mechanism for the pencil sharpener is used, the driving plate 3 is firstly shifted to the corresponding gear, and after the limiting piece 32 on the driving plate 3 and the limiting groove 21 on the rotating seat 2 are subjected to relative limiting, the position of the driving plate 3 on the rotating seat 2 is determined. Because the adjusting rod 4 is in a freely sliding state in the through hole 12 when the dial plate 3 is shifted, no pressure is applied to the dial plate 3, the force applied by a user is almost consistent when the user shifts the dial plate 3 each time, and no shifting hand feeling difference exists. The position of the dial 3 at this time defines the position of its active surface to the rear end of the pencil hole 11.

Then the end of the pen is inserted into the pencil sharpening hole 11 by the user, the end of the pen can push the sliding block 13 backwards, the sliding block 13 can act on the front end of the adjusting rod 4, and the adjusting rod 4 is pushed to move backwards until the rear end of the adjusting rod 4 abuts against the action surface of the dial 3. Accordingly, the length of the end portion of the pencil inserted into the pencil sharpening hole 11 is limited, and further, the definition of the pencil sharpening thickness is realized.

Based on different gear positions of the driving plate 3, the lengths of the end parts of the pen inserted into the pencil sharpening holes 11 are also different, and the thickness of the sharpened pencil lead is adjusted.

According to the pencil lead thickness adjusting mechanism for the pencil sharpener, the relative limit between the adjusting rod 4 and the driving plate 3 is not required to be realized through the spring, the adjusting rod 4 in the pencil lead thickness adjusting mechanism for the pencil sharpener is not required to be limited, the limit of the driving plate 3 on the rotating seat 2 is realized only through the structures of the limiting piece 32 and the limiting groove 21, the backward movable range of the adjusting rod 4 can be effectively limited, the backward movable position of the sliding block 13 is further limited, and the pencil lead thickness adjustment during pencil sharpening is realized. And this a thick and thin adjustment mechanism of refill for cutting machine, when carrying out the gear operation of driver plate 3, because need not to receive the spring pressure of spring to adjusting lever 4 for driver plate 3 stir the dynamics of arbitrary gear balanced, stir the feel and have not had the difference, promoted the use and experienced.

In the description and claims of the present utility model, terms indicating directions, such as "front", "rear", "upper", "lower", "left", "right", "side", "top", "bottom", etc., are used to describe various example structural parts and elements of the present utility model, but these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the utility model may be arranged in a variety of orientations, the directional terminology is used for purposes of illustration and is in no way limiting, such as "upper" and "lower" are not necessarily limited to being in a direction opposite or coincident with the direction of gravity.

Claims

1. A pencil lead thickness adjusting mechanism for pencil sharpener includes

The front part of the tool rest (1) is provided with a pencil sharpening hole (11) for inserting a pencil, the rear part of the tool rest is provided with a through hole (12), and the middle part of the tool rest is provided with a sliding block (13) capable of sliding forwards and backwards;

the rotating seat (2) is connected to the rear part of the tool rest (1);

a dial (3) swingably provided on the rotary seat (2), the dial (3) having an adjustment surface (31) inclined in a swinging direction on an inner surface facing the tool holder (1);

the adjusting rod (4) can be arranged in the through hole (12) in a front-back sliding way, the rear end of the adjusting rod (4) can be propped against the adjusting surface (31) of the driving plate (3), and the front end of the adjusting rod (4) corresponds to the sliding block (13) and protrudes out of the front end of the through hole (12);

the method is characterized in that: the driving plate (3) is characterized in that a limiting piece (32) is convexly arranged on the peripheral wall of the driving plate (3), and a plurality of limiting grooves (21) which can be used for placing the limiting piece (32) are formed in the rotating seat (2) corresponding to the swinging range of the driving plate (3).

2. The refill thickness adjustment mechanism for a pencil sharpener of claim 1, wherein: an opening (33) for deformation is formed in the edge position, close to the limiting piece (32), of the driving plate (3).

3. The refill thickness adjustment mechanism for a pencil sharpener of claim 2, wherein: the opening (33) is an arc-shaped hole.

4. A cartridge thickness adjusting mechanism for a pencil sharpener as set forth in any one of claims 1 to 3, wherein: the rotary seat is characterized in that an installation groove (22) is formed in the rear end face of the rotary seat (2), the driving plate (3) is arranged in the installation groove (22), and the limiting groove (21) is formed in the peripheral wall of the installation groove (22).

5. The pen refill thickness adjustment mechanism for a pencil sharpener of claim 4, wherein: a rotating shaft (23) is arranged in the mounting groove (22), and the center of the driving plate (3) is sleeved on the rotating shaft (23).

6. The pen refill thickness adjustment mechanism for a pencil sharpener of claim 4, wherein: the rear end of the rotating seat (2) is also connected with a cover plate (5), the driving plate (3) is limited between the rotating seat (2) and the cover plate (5), and the driving plate (3) is also connected with a driving rod (34) extending out of the rotating seat (2) and the cover plate (5).

7. The refill thickness adjustment mechanism for a pencil sharpener of claim 6, wherein: and gear marks (51) for indicating the shift lever (34) to swing to different pen point thickness gears are arranged on the cover plate (5).

8. The pen refill thickness adjustment mechanism for a pencil sharpener of claim 4, wherein: a sealing plate (121) is arranged at the front end of the through hole (12) in a covering manner;

the adjusting rod (4) comprises a main body (41) matched with the diameter of the through hole (12), a first rod body (42) connected to the front end of the main body (41) and a second rod body (43) connected to the rear end of the main body (41), the first rod body (42) penetrates to the front side of the sealing plate (121) at a position corresponding to the sliding block (13), and the second rod body (43) penetrates into the mounting groove (22).

9. A cartridge thickness adjusting mechanism for a pencil sharpener as set forth in any one of claims 1 to 3, wherein: the rotating seat (2) is also connected with a handle part (25).

10. A cartridge thickness adjusting mechanism for a pencil sharpener as set forth in any one of claims 1 to 3, wherein: the adjusting surface (31) on the driving plate (3) comprises a plurality of inclined surfaces which are connected in a step shape.