CN217649199U

CN217649199U - Single switch opening and closing mechanism of pencil sharpener

Info

Publication number: CN217649199U
Application number: CN202221012606.3U
Authority: CN
Inventors: 毛永华; 金响标
Original assignee: Yiwu Dingbang Stationery And Sporting Goods Co ltd
Current assignee: Yiwu Dingbang Stationery And Sporting Goods Co ltd
Priority date: 2022-04-27
Filing date: 2022-04-27
Publication date: 2022-10-25
Anticipated expiration: 2032-04-27

Abstract

The utility model discloses a single switch opening and closing mechanism of a pencil sharpener, which comprises a pencil sharpening cutter set, a slide block in the cutter set, a floatable transmission shaft and a microswitch for controlling the operation of a motor; the transmission shaft is connected with the cutter set, and the motor drives the cutter set to rotate through the transmission shaft; a first through hole is formed in the center of the transmission shaft, and a movable ejector rod is arranged in the first through hole; the sliding block can push against the ejector rod; when the knife group is pressed, the knife group and the transmission shaft move for a certain distance, the transmission shaft directly or indirectly touches the microswitch, the motor rotates forwards, and the pencil is cut; the sliding block is pressed by the pencil point, the sliding block and the ejector rod move for a certain distance, the ejector rod touches the microswitch, the motor rotates reversely or stops, and the cutting is finished; based on the pressing actions of the same microswitch and different trigger pieces in the same direction, the double operation logic of starting and stopping the pencil sharpener is realized through the starting and stopping motor, the cutting function of the pencil sharpener is optimized, and meanwhile, the layout of all the parts in the pencil sharpener is reasonable.

Description

Single switch opening and closing mechanism of pencil sharpener

Technical Field

The utility model relates to an electronic penknife especially relates to a single switch opening and closing mechanism and penknife of penknife.

Background

The pencil sharpener is a learning or office appliance, the core part of which is a pencil sharpening mechanism, comprising a gear ring, a tool rest and a hob, the hob rotates along with the tool rest to finish the cutting of a pencil, and the pencil sharpener is classified by the power driving the pencil sharpening mechanism and can be divided into a hand pencil sharpener and an electric pencil sharpener.

An electric pencil sharpener with the notice number of CN 206703798U; CN 201333883Y;

the electric pencil sharpener with publication number CN210047247U discloses a main body, a scrap cover, a bottom cover, a knife rest, a motor and a transmission mechanism, wherein the motor drives the knife rest to rotate through the transmission mechanism.

The operation of an electric pencil sharpener usually requires the configuration of two switches, one on and one off.

When a pencil is inserted into the tool rest, a starting switch is triggered, the circuit is conducted, and the motor drives the tool rest to rotate through the transmission gear so as to finish the cutting of the pencil;

when the pencil is cut, the closing switch is triggered, and the motor stops rotating.

Because the internal space of the electric pencil sharpener is narrow, the installation of the two switches and the two circuits is inconvenient, and the possibility of circuit failure is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a single switch opening and closing mechanism of an electric pencil sharpener, which realizes the starting and closing of the electric pencil sharpener by only adopting a micro switch; the difficulty of switch and circuit installation is reduced by controlling the operation and the closing of the single switch, and the failure rate of the starting and the closing of the pencil sharpener is reduced.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the single-switch on-off control system is characterized by comprising a pencil-sharpening cutter set, a sliding block in the cutter set, a floatable transmission shaft and a microswitch for controlling the operation of a motor; the transmission shaft is connected with the cutter set, and the motor drives the cutter set to rotate through the transmission shaft;

a first through hole is formed in the center of the transmission shaft, and a movable ejector rod is arranged in the first through hole; the slide block can push and contact the ejector rod;

when the knife group is pressed, the knife group and the transmission shaft move for a certain distance, and the transmission shaft directly or indirectly touches the microswitch, so that the motor rotates positively to cut a pencil;

the sliding block is pressed by the tip of the pencil, the sliding block and the ejector rod move for a certain distance, the ejector rod touches the micro switch, the motor rotates reversely or stops, and cutting is completed.

The utility model discloses further preferred technical scheme does: the knife tackle comprises a knife rest and a hob or pencil sharpener arranged on the knife rest.

The utility model discloses further preferred technical scheme does: the transmission shaft is connected with a transmission gear, and the motor drives the transmission shaft to rotate through the transmission gear.

The utility model discloses further preferred technical scheme does: a spring seat is arranged on the lower side of the transmission shaft, a return spring is arranged in the spring seat, and the lower end of the spring seat is pressed against the microswitch;

the spring seat comprises a bottom wall, a peripheral side wall and a central column, and an annular cavity for accommodating a return spring is formed between the central column and the peripheral side wall; the lower end of the central column is used for jacking and pressing the microswitch;

the center of the center post is provided with a second through hole, and the lower end of the ejector rod penetrates through the second through hole to press the microswitch.

The utility model discloses further preferred technical scheme does: the micro switch is arranged in the switch seat, and the lower end of the reset spring is pressed against the upper end of the switch seat.

The utility model discloses further preferred technical scheme does: an adjusting mechanism for adjusting the height of the micro switch is arranged below the micro switch, and the thickness of the pencil point of the pencil to be sharpened is adjusted by adjusting the height of the micro switch.

The utility model discloses further preferred technical scheme does: the adjusting mechanism comprises a movable block, an eccentric wheel and a rotating rod, the movable block is located below the microswitch, the eccentric wheel is located below the movable block, and the rotating rod is connected with the eccentric wheel.

The utility model discloses further preferred technical scheme does: the upper end of transmission shaft is equipped with the transmission connector, be equipped with the card on the connector and be strong, the knife tackle lower extreme is equipped with the through-hole that matches with the transmission connector.

The utility model discloses further preferred technical scheme does: the lower end of the tool rest is provided with a tool rest seat, and the tool rest seat is in butt joint with the transmission shaft.

Another theme: the single-switch on-off control system comprises a hob holder provided with a hob, a sliding block in the hob holder, a floatable transmission shaft and a microswitch for controlling the operation of a motor;

the transmission shaft is connected with the tool rest, and the motor drives the tool rest to rotate through the transmission shaft;

the tool rest is pressed downwards, the knife group and the transmission shaft move downwards for a certain distance, and the action of the transmission shaft is transmitted to the microswitch, so that the motor rotates forwards to cut a pencil;

the slide block and the ejector rod move downwards for a certain distance, the ejector rod touches the micro switch, the motor rotates reversely or stops, and the cutting is finished.

the spring seat comprises a bottom wall, a peripheral side wall and a central column, and an annular cavity for accommodating the return spring is formed between the central column and the peripheral side wall; the lower end of the central column is used for jacking and pressing the microswitch;

Compared with the prior art, the utility model has the advantages that the top rod which can move up and down is inserted in the floatable transmission shaft, and the knife group touches the top rod through the slide block; when the pencil sharpener is used, a pencil is inserted into the pencil feeding channel and downward pressing force is applied to the knife group so as to further move the transmission shaft connected with the knife group downwards, and then the microswitch is triggered so as to control the motor to drive the knife group to rotate to sharpen the pencil; the rotation is transmitted between the knife group and the transmission shaft to cut the pencil, and the pressing force from top to bottom is transmitted to trigger the microswitch.

Further, when the pen point part of the pencil is continuously cut and moves downwards, the pen point of the pencil lead presses the sliding block so as to further move the ejector rod downwards and trigger the microswitch again, so that the motor is controlled to rotate reversely or stop, and then the cutting action is finished. Based on the pressing actions of the same microswitch and different trigger pieces in the same direction, the double operation logic of starting and stopping the pencil sharpener is realized through the starting and stopping motor; the layout of all parts in the pencil sharpener is reasonable while the cutting function of the pencil sharpener is optimized.

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 explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on the concept of a composition or construction of the object being described and may include exaggerated displays and are not necessarily drawn to scale.

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

FIG. 2 is a longitudinal cross-sectional view of the electric pencil sharpener;

FIG. 3 is a schematic diagram of a single switch on-off control system;

FIG. 4 is a partial schematic view of a single switch on/off control system;

FIG. 5 is a second schematic diagram of a portion of a single switch on/off control system;

FIG. 6 is a first schematic view of a disassembled electric pencil sharpener;

fig. 7 is a second schematic view of the electric pencil sharpener in a partially disassembled structure.

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, exemplary only, and should not 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 or explained in subsequent figures.

As shown in fig. 1, 2, 6 and 7, the electric pencil sharpener 100 of the present embodiment is schematically configured. The electric pencil sharpener 100 comprises a pencil sharpener main body 101, wherein a pencil feeding hole 102 is formed in the upper end face of the pencil sharpener main body 101, and a pencil feeding mechanism 60 is installed below the pencil feeding hole 102. After the pencil is inserted from the pencil feeding hole 102, the pencil is driven by the pencil feeding mechanism 60 to further enter the pencil feeding channel f, and then the pencil can be further cut by the knife group 10.

As shown in fig. 3 to 5, it is a schematic structural diagram of a single-switch on-off control system 200 in the electric pencil sharpener 100. The single-switch on-off control system 200 comprises a pencil-sharpening blade group 10, a slide block 11' in the blade group 10, a floatable transmission shaft 20 and a microswitch 30 for controlling the operation of a motor 41. The transmission shaft 20 is connected with the knife tackle 10, and the motor 41 drives the knife tackle 10 to rotate through the transmission shaft 20. After the pencil is inserted into the pencil inserting channel f, the knife group 10 is pressed, the knife group 10 and the transmission shaft 20 move downwards for a certain distance, the transmission shaft 20 directly or indirectly touches the micro switch 30, and the motor 41 is driven to drive the knife group 10 to cut the pencil.

Furthermore, the center of the transmission shaft 20 is provided with a first through hole 21, a push rod 23 capable of moving up and down is inserted into the first through hole 21, the slide block 11' subjected to downward acting force further pushes against the push rod 23, and the push rod 23 moves downward for a certain distance to trigger the micro switch 30 again, so that the motor 41 rotates reversely or stops to finish the cutting work of the pencil.

Based on the above technical means, in practical use of the electric pencil sharpener 100 of the present embodiment, after a pencil is inserted into the pencil feeding channel f, a downward pressing force is applied to the sharpener set 10, and based on the interconnection between the sharpener set 10 and the transmission shaft 20, the pressing force is transmitted to the transmission shaft 20, so that the transmission shaft 20 moves downward to further trigger the micro switch 30, that is, the downward displacement of the transmission shaft 20 is transmitted to the micro switch 30, so that the motor 41 is driven forward, and then the sharpener set 10 cuts the pencil under the driving of the transmission gear b.

When the pen point part and the pencil lead of the pencil are further thinned, the pencil further moves downwards, so that the pencil lead cut to be of a proper thickness can press the slide block 11', the slide block 11' moves downwards to further press the ejector rod 23, the ejector rod 23 moves downwards after being pressed, the micro switch 30 is triggered again, and the motor 41 is electrically reversed or stopped to finish the cutting of the pencil.

The utility model has the advantages that the top rod 23 which can move up and down is inserted in the floatable transmission shaft 20, and the knife tackle 10 touches the top rod 23 through the slide block 11'; when in use, a pencil is inserted into the pencil inserting channel f and downward pressing force is applied to the knife tackle 10, so as to further move the transmission shaft 20 connected with the knife tackle 10 downwards, thereby triggering the microswitch 30, so as to control the motor 41 to drive the knife tackle 10 to rotate to cut the pencil; the rotation is transmitted between the knife group 10 and the transmission shaft 20 to realize pencil sharpening, and the pressing force from top to bottom is transmitted to trigger the micro switch 30.

Further, when the tip portion of the pencil is continuously cut and further moved downward, the tip of the pencil lead presses the slider 11' to further move the plunger 23 downward to trigger the micro switch 30 again, so as to control the motor 41 to rotate or stop reversely, thereby completing the cutting operation. Based on the pressing actions of the same microswitch 30 and different triggers in the same direction, the dual operation logic of starting and stopping the pencil sharpener is realized by the starting and stopping motor 41.

Further, the knife group 10 in this embodiment includes a knife holder 11 and a hob 12 or a pencil sharpener mounted on the knife holder 11. That is, the present embodiment does not limit the specific cutting tool form on the tool set 10, and a person skilled in the art can select the hob 12 according to actual needs, and when the transmission shaft 20 drives the tool holder 11 to rotate, the hob 12 further cuts the pencil inserted in the tool holder 11. Of course, the specific form of the cutting tool may also be a pencil sharpener, in which case, the sharpener blade is mounted on the tool holder 11, and the transmission shaft 20 rotates to drive the tool holder 11 to rotate, so that the pencil sharpener blade cuts the pencil.

As a support for the above core technical means, other auxiliary technical means need to be further introduced, a transmission gear b is connected to the transmission shaft 20, and the motor 41 drives the transmission shaft 20 to rotate through the transmission gear b. In order to make the reasonable layout of the components inside the pencil sharpener, the transmission gear b can be composed of a plurality of gears, and the power output by the motor 41 is transmitted to the transmission shaft 20 through the plurality of gears in sequence, so that the transmission shaft 20 rotates. The transmission shaft 20 is rotatably connected to the knife tackle 10 to further rotate the knife tackle 10. After the transmission shaft 20 and the knife tackle 10 are rotatably connected, the transmission of the pressing force from top to bottom between the knife tackle 10 and the transmission shaft 20 also occurs based on the technical characteristic that the transmission shaft 20 can float up and down.

Further, after the pencil is cut and pulled out from the pencil feeding hole 102, in order to enable the motor 41 to automatically stop working, the following technical means are matched in the present embodiment: a spring seat 40 is arranged at the lower side of the transmission shaft 20, a return spring 42 is arranged in the spring seat 40, and the lower end of the spring seat 40 is pressed against the microswitch 30. Under the action of the reset component, after the pencil is inserted and the knife group 10 and the transmission shaft 20 are pressed downwards, the micro switch 30 is further indirectly triggered through the reset component. When the pencil is completely cut and pulled out, the reset component moves upwards and resets, and after the pressing force of the reset component on the micro switch 30 is removed, the motor 41 is further controlled to stop rotating or rotate reversely, so that the cutter set 10 is controlled to stop cutting.

Specific structure of the return member it should be noted that, as shown in fig. 3 to 5, the spring seat 40 includes a bottom wall 45, a peripheral side wall 43 and a central pillar 44, and an annular cavity h for accommodating the return spring 42 is formed between the central pillar 44 and the peripheral side wall 43; the lower end of the central post 44 is used to press the microswitch 30.

In order to make the push rod 23 inserted in the transmission shaft 20 smoothly pass through the reset component and trigger the micro switch 30, a second through hole 22 is provided at the center of the center post 44, and the lower end of the push rod 23 passes through the second through hole 22 to press the micro switch 30.

The microswitch 30 is arranged in the switch seat 31, the lower end of the return spring 42 is propped against the upper end of the switch seat 31, the switch seat 31 not only serves as a mounting seat of the microswitch 30, but also the upper end of the switch seat 31 can serve as a limiting point of the lower end of the return spring 42. The upper end of the return spring 42 is limited on the inner side surface of the bottom wall 45, and the lower end of the return spring is limited on the upper end of the switch base 31, so that the return spring 42 can be stably compressed and reset.

In addition, in the present embodiment, the function of sharpening the thickness of the pencil point is further optimized by the following technical means: an adjusting mechanism 50 for adjusting the height of the micro switch 30 is arranged below the micro switch 30, and the thickness of the pencil point of the pencil to be sharpened is further adjusted by adjusting the height of the micro switch 30. That is, the distance between the micro switch 30 and the slide 11' can be further adjusted by adjusting the height of the micro switch 30. The higher the height of the microswitch 30 is, the closer the distance between the microswitch 30 and the slide block 11 'is, the thicker the pencil point is, the pushing displacement of the pencil point to the slide block 11' and the ejector rod 23 can be completed in turn, the earlier the microswitch 30 is triggered to stop further cutting of the pencil point, and therefore the pencil point cut out is thicker; and when the height of the micro switch 30 is lower, the distance between the micro switch 30 and the sliding block 11 'is farther, and the pen point is sharper, the pushing displacement of the sliding block 11' and the ejector rod 23 can be completed in sequence, the micro switch 30 can be triggered in a delayed manner, and the knife group 10 can continuously cut the pencil, so that the cut pencil point is thinner.

It should be noted that, as shown in fig. 4, the adjusting mechanism 50 includes a movable block 51, an eccentric 52 and a rotating rod 53, the movable block 51 is located below the microswitch 30, the eccentric 52 is located below the movable block 51 and contacts with each other, and when the eccentric 52 rotates, the circumferential edges of different arc heights can make the movable block 51 in close contact with the eccentric undulate up and down.

Specifically, as shown in fig. 3 and 4, the eccentricity corresponding to each point on the circumference of the eccentric wheel 52 in the present embodiment increases or decreases, and the curvature of the circumferential curve transitions continuously. When the rotating rod 53 drives the eccentric wheel 52 to rotate towards one side, the movable block 51 is gradually driven to float upwards, so that the distance between the sliding block 11' and the microswitch 30 is shortened; when the rotating rod 52 drives the eccentric wheel 52 to rotate towards the other side, the movable block 51 is gradually driven to descend, so as to increase the distance between the sliding block 11' and the microswitch 30.

Furthermore, the side surface of the eccentric wheel 52 is connected with a rotating rod 53, the outer end of the rotating rod 53 is connected with an adjusting knob 55, and the adjusting knob 55 is exposed outside the pencil sharpener shell so as to be convenient for a user to adjust.

It should be noted that, for the connection structure between the transmission shaft 20 and the tool holder 11, a transmission connector 24 is arranged at the upper end of the transmission shaft 20, a clamping key 25 is arranged on the transmission connector 24, a tool holder seat 13 is arranged at the lower end of the tool holder 11, the tool holder seat 13 and the tool holder 11 are integrally formed, and a clamping groove matched with the clamping key 25 is arranged in the tool holder seat 13, so that the tool holder seat 13 and the transmission shaft 20 are in butt joint and can transmit. It should be noted that the clamping limit between the transmission connector 24 and the tool rest base 13 may not be limited to the form of the clamping key 25 and the clamping groove, but may also be other structures that limit the radial rotation of the two and can be mutually clamped.

The lower end of the knife group 10 is provided with a through hole 14 matched with the transmission connector 24, and the through hole 14 can allow the pencil point to pass through so as to be indirectly or directly contacted with the transmission connector 24.

In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", and the like indicate the directions or positional relationships based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the products of the present invention are conventionally placed when used, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention.

It is right above the utility model provides a single switch open-close control system has carried out detailed introduction, and it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the explanation of above embodiment is only used for helping the assistant the utility model discloses and core thought. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the scope of the appended claims.

Claims

1. The single switch opening and closing mechanism of the pencil sharpener is characterized by comprising a pencil sharpening knife group, a sliding block in the knife group, a floatable transmission shaft and a microswitch for controlling the operation of a motor;

the transmission shaft is connected with the cutter set, and the motor drives the cutter set to rotate through the transmission shaft;

when the knife group is pressed, the knife group and the transmission shaft move for a certain distance, and the transmission shaft directly or indirectly touches the micro switch to cause the motor to rotate positively to cut a pencil;

2. The single switch opening and closing mechanism of a pencil sharpener of claim 1 wherein said knife assembly comprises a knife holder and a hob or pencil sharpener mounted on said knife holder.

3. The single switch opening and closing mechanism of a pencil sharpener of claim 1, wherein the transmission shaft is connected with a transmission gear, and the motor drives the transmission shaft to rotate through the transmission gear.

4. The single switch opening and closing mechanism of a pencil sharpener as claimed in claim 1, wherein a spring seat is arranged on the lower side of the transmission shaft, a return spring is arranged in the spring seat, and the lower end of the spring seat abuts against the microswitch;

5. The single switch opening and closing mechanism of the pencil sharpener of claim 4, wherein the micro switch is disposed in the switch base, and the lower end of the return spring abuts against the upper end of the switch base.

6. The single switch opening and closing mechanism of a pencil sharpener as recited in claim 1, wherein said micro switch is provided with a height adjustment mechanism below the micro switch for adjusting the height of the micro switch to adjust the thickness of the point of the pencil to be sharpened.

7. The single switch opening and closing mechanism of a pencil sharpener of claim 6, wherein said adjusting mechanism comprises a movable block, an eccentric wheel and a rotating rod, said movable block is located below said micro switch, said eccentric wheel is located below said movable block, and said rotating rod is connected to said eccentric wheel.

8. The single switch opening and closing mechanism of a pencil sharpener as claimed in claim 1, wherein the upper end of the transmission shaft is provided with a transmission connector, the connector is provided with a clamping key, and the lower end of the cutter set is provided with a through hole matched with the transmission connector.

9. The single switch opening and closing mechanism of a pencil sharpener of claim 2, wherein a holder seat is mounted at a lower end of the holder, said holder seat abutting against said drive shaft.

10. The single switch opening and closing mechanism of the pencil sharpener is characterized by comprising a tool rest provided with a hob, a sliding block in the tool rest, a floatable transmission shaft and a microswitch for controlling the operation of a motor;

a first through hole is formed in the center of the transmission shaft, and a movable ejector rod is arranged in the first through hole; the sliding block can be in jacking contact with the ejector rod;

when the tool rest is pressed downwards, the tool group and the transmission shaft move downwards for a certain distance, and the action of the transmission shaft is transmitted to the microswitch, so that the motor rotates forwards to cut a pencil;

11. The single switch opening and closing mechanism of a pencil sharpener of claim 10, wherein a spring seat is provided at a lower side of said transmission shaft, a return spring is provided in said spring seat, and a lower end of said spring seat abuts against said micro switch;

the center of the center column is provided with a second through hole, and the lower end of the ejector rod penetrates through the second through hole to press the microswitch.