阅读说明：本技术 削笔机刀架、削笔机构及削笔机 (Pencil sharpener cutter holder, pencil sharpening mechanism and pencil sharpener ) 是由 金响标 于 2020-04-28 设计创作，主要内容包括：本发明公开了削笔机刀架、削笔机构及削笔机,包括前联接部、后联接部和安装滚刀的切削部位,切削部位包括供铅笔插入的呈凸起状的铅笔支承通道及铅笔支承通道后端的推杆移动区域,推杆移动区域内设有用于支承在推杆下方的支撑部件；铅笔从铅笔支撑通道插入,推杆的前端或部分区域被支撑部件支承住,以避免推杆的前端在重力作用下下垂、形变,进而保证切屑铅笔时的粗细调节及减少断芯情况发生。(The invention discloses a pencil sharpener tool rest, a pencil sharpening mechanism and a pencil sharpener, which comprise a front connecting part, a rear connecting part and a cutting part for mounting a hob, wherein the cutting part comprises a convex pencil supporting channel for inserting a pencil and a push rod moving area at the rear end of the pencil supporting channel, and a supporting part for supporting the lower part of the push rod is arranged in the push rod moving area; the pencil is inserted from the pencil supporting channel, and the front end or partial region of the push rod is supported by the supporting part, so that the front end of the push rod is prevented from sagging and deforming under the action of gravity, and further the thickness adjustment during the pencil cutting is ensured and the occurrence of the core breaking condition is reduced.)

1. The pencil sharpener knife rest is characterized by comprising a front connecting part, a rear connecting part and a cutting part for mounting a hob, wherein the cutting part comprises a convex pencil supporting channel for inserting a pencil and a push rod moving area at the rear end of the pencil supporting channel, and a supporting part for supporting the lower part of the push rod is arranged in the push rod moving area.

2. The sharpener blade holder of claim 1 wherein said support member has a guide slot in an upper surface thereof for receiving the plunger, said guide slot for guiding the plunger to extend and retract in a predetermined direction.

3. The sharpener blade holder of claim 1 wherein said guide slot is of square configuration in cross-section.

4. The sharpener cartridge of claim 1 wherein said push rod travel area includes a flat surface, said support member projecting from said flat surface.

5. The sharpener cartridge of claim 1 wherein said support member is integrally aluminum die cast with said cutting portion.

6. The sharpener blade holder of claim 1 wherein said cutting portion further comprises a rear hub for journaling said hob, said support member abutting said rear hub, or said support member being spaced from said rear hub.

7. The sharpener blade holder of claim 2 wherein said guide slot is aligned with the through-hole of the push rod on the rear adapter.

8. The sharpener blade holder of claim 4 wherein said support member has a height above the plane of 1-4 mm.

9. A sharpener mechanism comprising a sharpener holder and roller cutter as claimed in any one of claims 1-8.

10. A pencil sharpener comprising the pencil sharpening mechanism of claim 9.

Technical Field

The invention relates to a pencil sharpener for sharpening a pencil, in particular to a tool rest and a sharpening mechanism of the pencil sharpener.

Background

The pencil sharpener can safely and quickly sharpen pencils, and becomes a necessary tool for students to write and study.

The existing pencil sharpener has the functions of adjusting the thickness of the pencil point and pushing out broken leads; one important component is a drivable push rod which is axially displaceable in the tool holder.

The CN105922797B pencil lead point thickness adjustable mechanism comprises a sliding stop block on a knife rest and a telescopic rod capable of moving axially, wherein the telescopic rod can push the sliding stop block to move forwards.

The broken core pushing mechanism and the pencil sharpener of CN206436700U comprise a broken core push rod which is arranged at the rear end of a knife rest and can limit axial movement, the front end of the broken core push rod extends into a chip removal area of the knife rest, and the front end face of the broken core push rod is used as a limiting face for controlling the diameter of a pencil core tip.

The front end of the existing push rod is in a suspended state when extending to a chip removal area of the tool rest, so that the push rod can deviate when moving, and the stability of the push rod in the front-back movement can not be effectively ensured.

Disclosure of Invention

The invention aims to provide a pencil sharpener cutter frame for improving the movement stability of a push rod in the cutter frame, and further provides a cutting mechanism with the cutter frame and a pencil sharpener.

The technical scheme provided by the invention for solving the technical problems is as follows: the pencil sharpener knife rest is characterized by comprising a front connecting part, a rear connecting part and a cutting part for mounting a hob, wherein the cutting part comprises a convex pencil supporting channel for inserting a pencil and a push rod moving area at the rear end of the pencil supporting channel, and a supporting part for supporting the lower part of the push rod is arranged in the push rod moving area.

The further preferable technical scheme of the invention is as follows: the upper surface of the supporting component is provided with a guide groove for accommodating the push rod, and the guide groove is used for guiding the push rod to stretch and retract along a preset direction.

The further preferable technical scheme of the invention is as follows: the cross section of the guide groove is of a square structure.

The further preferable technical scheme of the invention is as follows: the push rod moving area comprises a plane, and the supporting part is raised from the plane.

The further preferable technical scheme of the invention is as follows: the supporting component and the cutting part are integrally formed by aluminum die casting.

The further preferable technical scheme of the invention is as follows: the cutting part also comprises a rear shaft joint seat for shaft joint of the hob, and the supporting part is close to the rear shaft joint seat or has a certain distance with the rear shaft joint seat.

The further preferable technical scheme of the invention is as follows: the guide groove is aligned with the push rod through hole on the rear shaft connecting seat.

The further preferable technical scheme of the invention is as follows: the height of the support component protruding from the plane is 1-4 mm.

Another preferred subject of the invention is: the pencil sharpening mechanism is characterized by comprising the pencil sharpener cutter frame and a hob.

Another preferred subject is: the pencil sharpener comprises the pencil sharpening mechanism.

Compared with the prior art, the pencil support device has the advantages that when the pencil support device is used, a pencil is inserted from the pencil support channel, the push rod passes through the push rod through hole and is arranged in the guide groove on the support part, and the front end face of the push rod is aligned with a pencil lead; at the moment, the front end or partial area of the push rod is supported by the supporting part, so that the front end of the push rod is prevented from sagging and deforming under the action of gravity, and further the thickness adjustment during the process of cutting the pencil is ensured and the occurrence of core breaking is reduced.

Drawings

The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of illustrating the preferred embodiments and therefore should not be taken as limiting the scope of the invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.

FIG. 1 is a schematic view of the overall structure of a pencil sharpener;

FIG. 2 is a side view of the overall construction of the pencil sharpener;

FIG. 3 is a cross-sectional view of the internal structure of the pencil sharpener;

FIG. 4 is a schematic structural view of a pencil sharpening mechanism and a push rod;

FIG. 5 is a structural assembly view of the pencil sharpening mechanism and the push rod;

FIG. 6 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;

fig. 7 is an enlarged view of the invention at B in fig. 5.

Detailed Description

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.

It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined and explained in subsequent figures.

The pencil sharpener 100 comprises a pencil sharpener body 101, a rocking handle assembly 102 and a pencil sharpening mechanism 200; the pencil sharpener 200 includes a pencil sharpener blade holder 10 and a hob cutter 20. Preferably, a drawer-type shavings receiving groove 103 is installed at the bottom of the sharpener body 101.

The front side surface of the shell of the pencil sharpener main body 101 is provided with a pencil feeding hole which is communicated with a pencil supporting channel 01 on the sharpener tool rest 10. The upper portion of the pencil sharpener body 101 includes a cavity for receiving the pencil sharpening mechanism 200, and the lower portion of the pencil sharpener body 101 is provided with a shavings receiving slot 103.

The gear 21 at one end of the hob 20 of the pencil sharpening mechanism 200 is meshed with the internal gear 51 of the turret 50, the crank assembly 102 is connected to the turret 50, and when the user shakes the crank assembly 102, the turret 50 can drive the hob 20 to sharpen a pencil.

The sharpener holder 10 comprises a front coupling part 11, a rear coupling part 12 and a cutting part 13 for mounting a hob 20, wherein the cutting part 13 comprises a convex pencil supporting channel 01 for inserting a pencil and a push rod moving area 02 at the rear end of the pencil supporting channel 01, and a support part 30 for supporting the lower part of the push rod 40 is arranged in the push rod moving area 02.

The rear coupling portion 12 of the sharpener holder 10 is coupled to the handle assembly 102 in a snap-fit configuration, a threaded connection, or the like. The runner hub 50 is detachably connected to the housing of the pencil sharpener, specifically, a through hole for the runner hub 50 to be clamped is formed in the rear side surface of the pencil sharpener housing, and the runner hub 50 is clamped on the rear side surface of the pencil sharpener housing in a clamping manner.

Preferably, the front connecting part 11 of the pencil sharpener tool rest 10 is connected with an automatic pencil feeding mechanism, the automatic pencil feeding mechanism comprises a forward rotation driving wheel and a reverse rotation driving wheel which are parallel to each other and are spaced by a certain distance, a pencil feeding wheel assembly is positioned in a spacing space between the forward rotation driving wheel and the reverse rotation driving wheel and can move in the spacing space, and the forward rotation driving wheel and the reverse rotation driving wheel are meshed with a duplicate gear to realize linkage; in the first state, the pen feeding wheel assembly is in contact with the inner side surface of the forward rotation driving wheel but is separated from the reverse rotation driving wheel to realize pen feeding action, and in the second state, the pen feeding wheel assembly is in contact with the inner side surface of the reverse rotation driving wheel but is separated from the forward rotation driving wheel to realize pen withdrawing action; the pencil sharpener can advance and retreat automatically, and the rocking handle rotates clockwise, so that the functions of automatic pencil feeding and automatic pencil retreating can be met, and the operation in the pencil sharpening process can be simplified.

The upper side of the cutting part 13 on the penknife rest 10 is provided with a hob cutter 20. When a pencil to be cut is inserted into the pencil supporting passage 01, the handle assembly 102 is rotated to drive the roller block 50 so that the roller cutter 20 is rotated.

The push rod moving area 02 comprises a flat meter 03, and the supporting part 03 protrudes from the flat meter 03; and it is preferable that the supporting member 30 in the present embodiment is formed integrally with the cutting portion 13 by aluminum die-casting.

More specifically, the upper surface of the support member 30 is provided with a guide groove 31 for receiving the push rod 40, and the guide groove 31 guides the push rod 40 to extend and contract in a predetermined direction.

What needs to be explained in detail here is the mechanism of action of the push rod 40, specifically: in order to cut the pencil in a rough or fine manner, the pencil sharpener needs to adopt a push rod 40 to move back and forth so as to limit the tip part of the pencil; when the push rod 40 is used for limiting the pencil lead head forward, the cut pencil lead is thick, and when the push rod 40 is used for limiting the pencil lead head backward, the cut pencil lead is thin.

For controlling the push rod 40 to move back and forth, it should be further explained that the thickness adjusting mechanism includes the push rod 40 and an operating part, the operating part includes a rotating body N and a control end part, and the push rod 40 is located at the rear end of the sharpener 10 and can move axially with limited amplitude. The control end portion includes a low gear position and a high gear position with different heights, and the front end of the control end portion is fixedly connected with the tail end of the push rod 40, and preferably, the control end portion and the tail end of the push rod are integrally formed.

The rotating body N is provided with a top contact end matched with a low gear and a high gear, and a return spring sleeved on the push rod 40 is propped between the inner wall of the pencil sharpener tool rest 10 and the control end part.

When the top contact end on the rotating body N is positioned at the low gear of the control end part, the pencil lead cut by the pencil sharpener is thinner; when the top contact end on the rotating body N is positioned at the high gear of the control end part, the pencil lead cut by the pencil sharpener is thicker. Thereby realizing the adjustment of the thickness of the pencil.

Preferably, the knob Y is sleeved on the rear section area of the rotor N, and the knob Y penetrates through the through hole of the rocking handle assembly 102 and penetrates out of the rocking handle assembly 102, so that the knob Y can be rotated conveniently, and the rotation of the rocking handle assembly 102 cannot be influenced. The user rotates the knob Y to rotate the rotator N to control the forward and backward movement of the push rod 40.

Preferably, the outer surface of the knob Y is provided with a thread structure for increasing friction.

After explaining the working principle of the push rod 40 and its corresponding technical features, we can know the important significance of the push rod 40 in the pencil sharpener, so the inventor continuously conducts innovative research around the push rod 40. For the present solution, the push rod 40 generally has a certain length and is relatively slender; when the pencil sharpener moves forward and backward, the front end of the push rod 40 is prevented from drooping slightly under the action of gravity, and is easy to deform after a long time, so that the thickness effect of sharpening the pencil is influenced.

Therefore, the support member 30 serves to support a part of the weight of the push rod 40 so that the front end of the push rod 40 can maintain the axial state.

And the upper surface of the support member 30 is provided with a guide groove 31 for receiving the push rod 40, and the guide groove 31 is recessed downward to form a guide groove 31 for properly receiving the push rod 40 and guiding the push rod 40 to move forward and backward.

The cross section of the guide groove 31 matches the cross section of the push rod 40, and may have a square structure or a circular structure. The guide slot 31 is aligned with the push rod through hole 05 in the rear axle socket 04. In practical application, the push rod 40 is inserted into the guide groove 31 through the push rod through hole 05.

The cutting portion 13 in this embodiment further includes a rear shaft seat 04 for coupling the hob 20, and the supporting member 30 abuts against the rear shaft seat 04, or the supporting member 30 is spaced from the rear shaft seat 04. When the push rod 40 is long, the support member 30 may be disposed to keep a certain distance from the rear shaft socket 04 to ensure that the front end of the support member 30 is supported by the support member 30.

In practice, the height of the support member 30 protruding from the plane 03 may be preferably 1-4 mm.

When in use, a pencil is inserted from the pencil supporting channel, the push rod 40 passes through the push rod through hole 05 and is arranged in the guide groove 31 on the supporting part 30, and the front end surface of the push rod 40 is aligned with the pencil lead; at this time, the front end or a partial region of the push rod 40 is supported by the support member 30 to prevent the front end of the push rod 40 from sagging and deforming under the action of gravity, thereby ensuring thickness adjustment during pencil sharpening and reducing core breakage.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "first", "second", and the like are merely used for distinguishing between descriptions and are not to be construed as indicating or implying relative importance, but rather the specific meanings of the above terms in the present invention can be understood in a specific context by those of ordinary skill in the art.

The present invention provides a pencil sharpener, a cutting mechanism and a pencil sharpener, and the principle and the implementation of the present invention are explained in detail by using specific examples, and the description of the above embodiments is only used to help understand the present invention and the core idea. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.