CN220198935U

CN220198935U - Automatic pencil feeding mechanism of electric pencil sharpener

Info

Publication number: CN220198935U
Application number: CN202321614189.4U
Authority: CN
Inventors: 吴海峰; 罗永财; 郭桂兰
Original assignee: Sunwood Holding Group Co ltd
Current assignee: Sunwood Holding Group Co ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-12-19
Anticipated expiration: 2033-06-25

Abstract

The utility model provides an automatic pencil feeding mechanism of an electric pencil sharpener, and belongs to the technical field of pencil sharpeners. It solves the problem of insufficient reliability. The pen feeding mechanism comprises a mounting seat, two pen feeding wheel shaft assemblies which are arranged in parallel, a driving turntable and two elastic supporting pieces, wherein elastic force of the two elastic supporting pieces acts on one end opposite to the two pen feeding wheel shaft assemblies respectively, a penetrating mounting groove is formed in the bottom of the mounting seat, a stop block is arranged at the mounting groove in the mounting seat, the elastic supporting pieces are provided with a first strip part, a second strip part and a first transition part which is connected between the lower end of the first strip part and the lower end of the second strip part, the first strip part and the second strip part penetrate through the mounting groove from bottom to top, the first transition part is located at the lower side of the stop block, the first strip part abuts against the side part of the corresponding pen feeding wheel shaft assembly, the upper end of the first strip part abuts against the limiting part corresponding to the upper side of the pen feeding wheel shaft assembly, and the upper end of the second strip part is hooked on the inner side wall of the mounting seat. It has the advantages of ensuring the reliability in long-term use, etc.

Description

Automatic pencil feeding mechanism of electric pencil sharpener

Technical Field

The utility model belongs to the technical field of pencil sharpener, relates to an electric pencil sharpener, and in particular relates to an automatic pencil feeding mechanism of the electric pencil sharpener.

Background

The existing automatic pencil sharpener generally comprises a housing and a machine core which is arranged in the housing and consists of a bracket, a pencil holder, a shaving assembly and a motor for controlling the working of the shaving assembly, and in order to facilitate the pouring of pencil scraps and pencil powder, the upper end of the housing is provided with an opening and is connected with a top cover of the pencil sharpener at the opening. Further, with the continuous improvement of the functions, the automatic pencil sharpener also has the function of automatically advancing and retreating the pencil, which is realized by arranging a pencil advancing mechanism in the shell.

For example, a pencil clamping and feeding mechanism and a pencil sharpener are disclosed in patent application number 202220727601.2, wherein the pencil clamping and feeding mechanism comprises a mounting seat with a mounting cavity, and a first clamping component and a second clamping component which are movably arranged in the mounting cavity, and a first pencil penetrating gap for a pencil to penetrate is formed between the first clamping component and the second clamping component; the two ends of the first clamping component are respectively provided with a first end part and a second end part, the two ends of the second clamping component are respectively provided with a third end part and a fourth end part, the third end part is close to the first end part, the fourth end part is close to the second end part, the positions, close to the first end part and the fourth end part, of the mounting seat are respectively provided with a sliding groove, and the first end part and the fourth end part are respectively slidably arranged in the two sliding grooves; the mounting cavity is internally provided with two torsion springs, each torsion spring is provided with a first torsion arm and a second torsion arm, the two first torsion arms of the two torsion springs are all abutted on the mounting seat, and the two second torsion arms of the two torsion springs are respectively abutted on the first clamping component and the second clamping component; the first clamping assembly and the second clamping assembly both comprise a gear shaft and a set of idler wheels arranged on the gear shaft, at least two circles of bulges are arranged on the idler wheels along the circumferential direction of the idler wheels, a bending part is arranged on the second torsion arm, and the bending part is limited between the two circles of bulges; the mounting seat is provided with two fixing pins, and the two torsion springs are respectively sleeved on the two fixing pins; the rotary table is characterized by further comprising a driving rotary table which is arranged on the mounting seat and positioned below the first clamping assembly and the second clamping assembly, a plurality of driving teeth are arranged on the driving rotary table along the circumferential direction of the driving rotary table, the first clamping assembly and the second clamping assembly are arranged in a central symmetry mode, and the driving teeth on the rotary table are meshed with gear shafts on the first clamping assembly and the second clamping assembly.

In the working process, the rotary table is driven to rotate, and the first clamping assembly and the second clamping assembly are driven to rotate through the meshing of the driving teeth and the gear shaft, so that the pencil gradually stretches into the pencil sharpener; when the pencil sharpening is completed, the rotary table is driven to reversely rotate, so that the first clamping component and the second clamping component are opposite to the original rotation direction, and the pencil gradually withdraws from the pencil sharpener. In the practical use, the first end on the first clamping component and the fourth end on the second clamping component are both slidably arranged in the chute, namely, the two groups of clamping components can slide unilaterally, the size of the first pen penetrating gap can be adjusted to adapt to pencils with different diameters, and meanwhile, the first clamping component and the second clamping component can be guaranteed to clamp pencils with different diameters under the action of the elasticity of the two torsion springs.

However, the pencil clamping mechanism, the pencil feeding mechanism and the pencil sharpener have the following defects: in combination with fig. 5 of the specification, the torsion spring is sleeved on the fixing pin, the fixing pin is arranged in the mounting seat, two ends of the fixing pin are respectively inserted into two slots in the mounting seat, in order to ensure normal assembly of the fixing pin, the upper side of one slot is closed, the upper side of the other slot is open, one end of the fixing pin is firstly inserted into the slot with the closed upper side after the torsion spring is sleeved on the fixing pin, and then the other end of the torsion spring is clamped into the slot with the open upper side from top to bottom.

Disclosure of Invention

The utility model aims at solving the problems existing in the prior art, and provides an automatic pen feeding mechanism of an electric pen cutter, which solves the problem of insufficient reliability.

The aim of the utility model can be achieved by the following technical scheme:

the automatic pencil feeding mechanism of the electric pencil sharpener comprises a mounting seat, two pencil feeding wheel shaft assemblies which are arranged in the mounting seat in parallel and can rotate, and a driving turntable which is arranged below the two pencil feeding wheel shaft assemblies and can drive the two pencil feeding wheel shaft assemblies to rotate when rotating, wherein the mounting seat is internally provided with two elastic supporting pieces, the elastic force of the two elastic supporting pieces respectively acts on one ends opposite to the two pencil feeding wheel shaft assemblies, and one ends of the two pencil feeding wheel shaft assemblies under the elastic force of the elastic supporting pieces can horizontally translate along the mounting seat.

When the elastic support piece is assembled, the first strip-shaped part and the second strip-shaped part are installed in the installation seat in a mode that the first strip-shaped part and the second strip-shaped part penetrate through the installation groove from bottom to top. The first strip part is abutted against the side part of the corresponding pen inlet wheel shaft assembly, and the upper end of the first strip part is provided with a limiting part abutted against the upper side of the corresponding pen inlet wheel shaft assembly, so that the first strip part cannot be separated from the pen inlet wheel shaft assembly downwards, the upper end of the second strip part is hooked on the inner side wall of the mounting seat, the second strip part cannot be separated from the mounting seat downwards, namely the elastic supporting piece cannot be displaced downwards; the transition part connected between the lower end of the strip part and the lower ends of the strip part is positioned at the lower side of the stop block, so that the elastic support piece cannot jump upwards. Therefore, the elastic support piece is well positioned along the vertical direction, the situation that the elastic support piece is separated from and displaced due to vibration is difficult to occur in long-term use, the elastic force of the elastic support piece can stably act on the pen inlet wheel shaft assembly for a long time, and the reliability of the automatic pen inlet mechanism of the electric pen cutter in long-term use is ensured.

In the automatic pencil feeding mechanism of the electric pencil sharpener, the inner side wall of the mounting seat is provided with a protruding part, a connecting hole penetrating through the top surface of the protruding part is formed in the protruding part, the upper end of the strip-shaped part II is provided with a barb-shaped connecting part, and the connecting part is hooked on the protruding part and the end part of the connecting part is inserted into the connecting hole.

The upper end of the second strip part is provided with the barb-shaped connecting part, the second strip part is hooked on the protruding part through the connecting part, and the end part of the second strip part is inserted into the connecting hole, so that the second strip part cannot be separated from the mounting seat downwards, the first strip part cannot be separated from the pen inlet wheel shaft assembly downwards in a combined mode, and the transition part is limited to upward movement by the stop block, so that the elastic supporting part is well positioned along the vertical direction, and the reliability of the automatic pen inlet mechanism of the electric pen cutter in long-term use is guaranteed.

In the automatic pencil feeding mechanism of the electric pencil sharpener, the lower side of the protruding part is provided with the abdication notch, a transition part II is further connected between the lower end part of the strip part II and the transition part I, the transition part II is arc-shaped, and the transition part II is positioned in the abdication notch.

The second transition part is arc-shaped and is positioned in the abdicating notch at the lower side of the protruding part, and the connecting part at the upper end of the second strip part is hooked on the protruding part, which is equivalent to the fact that the protruding part is clamped between the second transition part and the connecting part, so that the second strip part is not easy to separate from the mounting seat, and the positioning effect of the elastic supporting piece in the mounting seat is further improved.

In the automatic pencil feeding mechanism of the electric pencil sharpener, the stop block is in an inverted L shape, and the stop block part is positioned in the mounting groove.

The dog is the type of falling L, and is better to the blocking effect of transition portion one like this for elastic support piece can be better along vertical orientation by the location.

In the automatic pencil feeding mechanism of the electric pencil sharpener, the mounting groove is in a strip shape.

The strip shape enables the elastic support member to be mounted and fixed in the mounting seat in a relatively convenient posture from bottom to top.

In the automatic pencil feeding mechanism of the electric pencil sharpener, the pencil feeding wheel shaft assembly comprises a shaft body, a transmission gear, a pencil clamping wheel and a limiting ring, wherein the transmission gear, the pencil clamping wheel and the limiting ring are all fixed on the shaft body, a plurality of driving teeth are circumferentially distributed on the upper side of the driving turntable and meshed with the transmission gear, and the strip-shaped part of the elastic support piece is abutted against the limiting ring.

Compared with the prior art, the automatic pencil feeding mechanism of the electric pencil sharpener comprises the first strip-shaped part, the second strip-shaped part and the first transition part connected between the lower end of the first strip-shaped part and the lower end of the second strip-shaped part, wherein the mounting groove is formed in the bottom of the mounting seat, the stop block positioned at the mounting groove is arranged in the mounting seat, the first strip-shaped part is abutted against the side part of the corresponding pencil feeding wheel shaft assembly and the upper end of the second strip-shaped part is hooked on the inner side wall of the mounting seat, so that the elastic support cannot downwards shift, the transition part is positioned at the lower side of the stop block, the elastic support cannot upwards jump, and therefore the elastic support is well positioned along the vertical direction, the situation that the elastic support is separated from and shifted due to vibration is not easy to occur in long-term use, the elastic force of the elastic support can stably act on the pencil feeding wheel shaft assembly for a long time, and the reliability of the automatic pencil feeding mechanism of the electric pencil sharpener in long-term use is ensured.

Drawings

Fig. 1 is a schematic view of an automatic pencil feeding mechanism of the electric pencil sharpener.

Fig. 2 is a plan view of an automatic pencil feeding mechanism of the electric pencil sharpener.

Fig. 3 is a cross-sectional view taken along the direction A-A in fig. 2.

Fig. 4 is a schematic view of the pen holder in a bottom position.

Fig. 5 is a schematic diagram showing the cooperation between the driving turntable and the two pen-feeding axle assemblies in the automatic pen-feeding mechanism of the electric pencil sharpener.

In the figure, 1, a mounting seat; 1a, a mounting groove; 1b, a stop block; 1c, a protruding portion; 1c1, connecting holes; 1c2, relief notches; 2. a pen-feeding wheel shaft assembly; 2a, a shaft body; 2b, a transmission gear; 2c, clamping a pen wheel; 2d, limiting rings; 3. driving a turntable; 3a, a sleeving part; 3b, driving teeth; 4. a pen penetrating channel; 5. an elastic support; 5a, a first strip part; 5a1, a limiting part; 5b, a strip-shaped part II; 5b1, a connection portion; 5c, a first transition part; and 5d, a transition part II.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, 2 and 5, the automatic pencil feeding mechanism of the electric pencil sharpener comprises a mounting seat 1, two pencil feeding wheel shaft assemblies 2 which are arranged in the mounting seat 1 in parallel and can rotate in the same direction, and a driving rotary disc 3 which is positioned below the two pencil feeding wheel shaft assemblies 2 and can drive the two pencil feeding wheel shaft assemblies 2 to rotate when rotating, wherein a pencil penetrating channel 4 is formed between the two pencil feeding wheel shaft assemblies 2, a sleeving part 3a is arranged at the lower end of the driving rotary disc 3, and the sleeving part 3a can be sleeved outside the upper end of a pencil rack of the electric pencil sharpener and is fixed with the pencil rack in the circumferential direction. Two elastic supporting pieces 5 are further arranged in the mounting seat 1, the elastic force of the two elastic supporting pieces 5 acts on opposite ends of the two pen-feeding wheel shaft assemblies 2 respectively, one ends of the two pen-feeding wheel shaft assemblies 2 under the action of the elastic force of the elastic supporting pieces 5 can transversely translate along the mounting seat 1 to adjust the size of the pen-feeding channel 4, and the two ends of the two pen-feeding wheel shaft assemblies 2 can approach each other under the action of the elastic force of the corresponding elastic supporting pieces 5. Specifically, the pen-feeding wheel shaft assembly 2 comprises a shaft body 2a, a transmission gear 2b, a pen clamping wheel 2c and a limiting ring 2d which are all fixed on the shaft body 2a, wherein the pen clamping wheel 2c is a rubber wheel, a plurality of driving teeth 3b are circumferentially distributed on the upper side of the driving turntable 3, the transmission gears 2b of the two pen-feeding wheel shaft assemblies 2 are located at opposite ends and meshed with the driving teeth 3b on the driving turntable 3 at the same time, and a pen penetrating channel 4 is formed between the two pen clamping wheels 2 c.

In practice, the mounting seat 1 is connected in the casing of the electric pencil sharpener, the casing is also internally provided with a pencil holder and a motor, power is transmitted between the motor and the pencil holder through a gear transmission structure, and the driving turntable 3 is sleeved at the upper end of the pencil holder through a sleeving part 3a at the lower end and is circumferentially fixed with the pencil holder. When the pencil is required to be shaved, the pencil is inserted into the pencil through passage 4, then the motor is controlled to start, the motor drives the penholder to rotate through the gear transmission structure, the penholder drives the driving turntable 3 to rotate and simultaneously drives the two transmission gears 2b to rotate by means of the driving teeth 3b, and therefore the two shaft bodies 2a start to rotate and send the pencil into the pencil through friction force between the pencil clamping wheel 2c and the pencil for shaving. For a specific structure of how the end of the two-feed axle assembly 2 acted on by the corresponding elastic support member 5 translates along the mounting base 1, reference may be made to the structure of the first clamping assembly and the second clamping assembly in the pen-holding mechanism and the pencil sharpener disclosed in the prior art.

Further, as shown in fig. 1-4, a penetrating installation groove 1a is provided at the bottom of the installation seat 1, the installation groove 1a is in a bar shape, a stop block 1b is provided in the installation seat 1 at the installation groove 1a, the elastic support 5 is provided with a first bar-shaped portion 5a, a second bar-shaped portion 5b, and a first transition portion 5c connected between the lower end of the first bar-shaped portion 5a and the lower end of the second bar-shaped portion 5b, the first bar-shaped portion 5a and the second bar-shaped portion 5b pass through the installation groove 1a from bottom to top, the first transition portion 5c is located at the lower side of the stop block 1b, the first bar-shaped portion 5a and the second bar-shaped portion 5b are located at two sides of the stop block 1b, the stop block 1b is in an inverted L shape, and the part of the stop block 1b is located in the installation groove 1 a. The first strip-shaped part 5a is abutted against the side part of the limit ring 2d corresponding to the pen axle assembly 2, the upper end of the first strip-shaped part 5a is provided with a limit part 5a1 abutted against the upper side of the limit ring 2d corresponding to the pen axle assembly 2, and the upper end of the second strip-shaped part 5b is hooked on the inner side wall of the mounting seat 1.

When assembling, the elastic support piece 5 is installed in the installation seat 1 in a mode that the first strip-shaped part 5a and the second strip-shaped part 5b penetrate through the installation groove 1a from bottom to top. The first strip part 5a is abutted against the side part of the corresponding pen axle assembly 2, and the upper end of the first strip part 5a is provided with a limiting part 5a1 abutted against the upper side of the corresponding pen axle assembly 2, so that the first strip part 5a cannot be separated from the pen axle assembly 2 downwards, the upper end of the second strip part 5b is hooked on the inner side wall of the mounting seat 1, and the second strip part 5b cannot be separated from the mounting seat 1 downwards, namely the elastic supporting piece 5 cannot be displaced downwards; the transition part connected between the lower end of the first strip part 5a and the lower end of the second strip part 5b is positioned at the lower side of the stop block 1b, so that the elastic support piece 5 cannot jump upwards. Therefore, the elastic support piece 5 is well positioned along the vertical direction, the elastic support piece 5 is not easy to separate from and shift due to vibration in long-term use, the elastic force of the elastic support piece 5 can stably act on the pen inlet wheel shaft assembly 2 for a long time, and the reliability of the electric pen cutter in long-term use is ensured. In this embodiment, the two elastic supporting members 5 have the same structure, and the mounting manners of the two elastic supporting members 5 on the mounting base 1 are also identical.

Further, as shown in fig. 3, the inner side wall of the mounting seat 1 is provided with a protruding portion 1c, a connecting hole 1c1 penetrating through the top surface of the protruding portion 1c is formed in the protruding portion 1c, a connecting portion 5b1 in the shape of a barb is formed at the upper end of the second strip portion 5b, the connecting portion 5b1 is hooked on the protruding portion 1c, and the end portion of the connecting portion is inserted into the connecting hole 1c 1. The connecting part 5b1 in a reversed hook shape is arranged at the upper end of the second strip part 5b, the connecting part 5b1 is hooked on the protruding part 1c, and the end part of the connecting part is inserted into the connecting hole 1c1, so that the second strip part 5b cannot be separated from the mounting seat 1 downwards. The lower side of the protruding part 1c is provided with a yielding notch 1c2, a second transition part 5d is further connected between the lower end part of the second strip-shaped part 5b and the first transition part 5c, the second transition part 5d is arc-shaped, and the second transition part 5d is positioned in the yielding notch 1c 2. The second transition portion 5d is arc-shaped and is positioned in the abdicating notch 1c2 at the lower side of the protruding portion 1c, and the connecting portion 5b1 at the upper end of the second strip portion 5b is hooked on the protruding portion 1c, which is equivalent to the fact that the protruding portion 1c is clamped between the second transition portion 5d and the connecting portion 5b1, so that the second strip portion 5b is not easy to separate from the mounting seat 1.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The automatic pencil feeding mechanism of the electric pencil sharpener comprises a mounting seat (1), two pencil feeding wheel shaft assemblies (2) which are arranged in the mounting seat (1) in parallel and can rotate, and a driving turntable (3) which is arranged below the two pencil feeding wheel shaft assemblies (2) and can drive the two pencil feeding wheel shaft assemblies (2) to rotate when rotating, wherein two elastic supporting pieces (5) are further arranged in the mounting seat (1), the elastic force of the two elastic supporting pieces (5) respectively acts on one ends of the two pencil feeding wheel shaft assemblies (2) opposite to each other, one ends of the two pencil feeding wheel shaft assemblies (2) under the elastic force of the elastic supporting pieces (5) can horizontally move along the mounting seat (1), and the automatic pencil feeding mechanism is characterized in that a penetrating mounting groove (1 a) is arranged at the bottom of the mounting seat (1), a stop block (1 b) is arranged at the mounting groove (1 a), the elastic supporting piece (5) is provided with a first strip-shaped part (5 a), a second strip-shaped part (5 b) and a transition part (5 c) connected between the lower end of the first strip-shaped part (5 a) and the lower end of the second strip-shaped part (5 b) respectively penetrates through the stop block (1 a) and the first strip-shaped part (5 b) and the lower end of the first strip-shaped part (5 b) and the second strip-shaped part (5 b) respectively, the first strip-shaped part (5 a) is abutted against the side part of the corresponding pen-feeding wheel shaft assembly (2), the upper end of the first strip-shaped part (5 a) is provided with a limiting part (5 a 1) abutted against the upper side of the corresponding pen-feeding wheel shaft assembly (2), and the upper end of the second strip-shaped part (5 b) is hooked on the inner side wall of the mounting seat (1).

2. The automatic pencil feeding mechanism of the electric pencil sharpener according to claim 1, wherein the inner side wall of the mounting base (1) is provided with a protruding part (1 c), a connecting hole (1 c 1) penetrating through the top surface of the protruding part (1 c) is arranged in the protruding part (1 c), the upper end of the strip-shaped part II (5 b) is provided with a barb-shaped connecting part (5 b 1), the connecting part (5 b 1) is hooked on the protruding part (1 c), and the end part of the connecting part II is inserted into the connecting hole (1 c 1).

3. The automatic pencil feeding mechanism of the electric pencil sharpener according to claim 2, wherein the lower side of the protruding portion (1 c) is provided with a yielding notch (1 c 2), a transition portion two (5 d) is further connected between the lower end portion of the strip portion two (5 b) and the transition portion one (5 c), the transition portion two (5 d) is arc-shaped, and the transition portion two (5 d) is located in the yielding notch (1 c 2).

4. An automatic pencil feeding mechanism of an electric pencil sharpener according to claim 1, 2 or 3, wherein the stop block (1 b) is of inverted L shape, and the stop block (1 b) is partially located in the mounting groove (1 a).

5. The automatic pencil feeding mechanism of the electric pencil sharpener of claim 4, wherein the mounting slot (1 a) is in the shape of a bar.

6. An automatic pencil feeding mechanism of an electric pencil sharpener according to claim 1, 2 or 3, wherein the pencil feeding wheel shaft assembly (2) comprises a shaft body (2 a), a transmission gear (2 b), a pencil clamping wheel (2 c) and a limiting ring (2 d), wherein the transmission gear (2 b), the pencil clamping wheel (2 c) and the limiting ring (2 d) are all fixed on the shaft body (2 a), a plurality of driving teeth (3 a) are circumferentially distributed on the upper side of the driving turntable (3), the driving teeth (3 a) are meshed with the transmission gear (2 b), and a strip-shaped part (5 a) of the elastic supporting piece (5) is abutted against the limiting ring (2 d).