CN213228132U - Delay transmission mechanism of electric pencil sharpener - Google Patents

Abstract

The utility model relates to a delay transmission mechanism of electric pencil sharpener, wherein, the trigger piece can move relative to the knife rest and be in the first position or the second position, the first reset piece acts on the trigger piece to keep the trend of moving towards the first position, the transmission rod can rotate synchronously with the knife rest, the clutch structure is arranged between the transmission rod and the trigger piece, the transmission rod can rotate along with the knife rest and go deep into the through hole of the knife rest, move downwards relative to the through hole synchronously with the pencil block under the pencil action, thus the clutch structure can drive the trigger piece to move towards the second position direction by the rotation of the transmission rod when the transmission rod moves downwards to the clutch position along with the pencil block, and further the microswitch is promoted to be in the conduction state, and the driving structure is in the non-working state, thus, the delay transmission can be realized by the cooperation of the pencil block, the transmission rod and the trigger piece without complex parts, and the structure is stable, the maintenance is convenient, the cost is lower, and the practicability is strong.

Description

Delay transmission mechanism of electric pencil sharpener

Technical Field

The utility model relates to an electronic ware field of cutting especially relates to an electronic delay drive mechanism who cuts a ware.

Background

The pencil sharpener is a common stationery, and only serves as a basic pencil sharpening tool when the pencil sharpener enters the market at the earliest time, however, with the increase of the pencil use demand, people have higher requirements on the quality and speed of pencil sharpening of a pencil sharpener, so that the pencil sharpener for the automatic pencil sharpener is developed, after the working procedure of sharpening the pencil is completed by the automatic pencil sharpener, a motor stops working immediately, half of cutting marks exist between a hob and a cutting surface of the pencil due to sudden stop of the hob, if the pencil is directly taken out of the pencil sharpener at the moment, the cutting marks remain on the pencil head, the pencil is not attractive, fingers are easily scratched, and the pencil sharpener is provided with a delay transmission device for removing the cutting marks on the cutting surface by slowly rotating the hob for several weeks after cutting.

For example, Chinese utility model patent with patent number CN201620241561.5 (No. CN205705893U) discloses an electric pencil sharpener, wherein the control module comprises a first switch connected with the power supply, and the first switch can control the motor to start or stop through the control module; the delay module is connected with the control block, comprises a second switch connected with a power supply and is used for controlling the motor to stop; the pencil inserted into the jack has its tip capable of contacting or separating with the second switch, and the control module realizes delayed transmission, but has relatively high cost and is not suitable for wide application.

Also, for example, chinese patent No. CN201610997806.1 (No. CN106313988A) discloses an electric pencil sharpener, in which a pencil is placed in a pencil hole to push a tool rest downward, the tool rest pushes a starting shaft downward due to contact between the tool rest and the starting shaft, a reset button switch on the starting shaft and a contact block are pressed against each other, the reset button switch is pressed downward, a motor is started to rotate a motor gear, the tool rest rotates along with the gear, a hob performs planetary cutting around the pencil to sharpen a pencil point, a pencil point of the pencil is pressed against a pencil blocking block after sharpening, the tool rest continues to push the tool rest, the tool blocking block drives the pencil blocking block downward, the pencil blocking block pushes a delay shaft downward, a delay mechanism between the delay shaft and the contact block is started, and the hob polishes and polishes a cutting surface of the pencil point. Although the pencil sharpener also realizes delayed transmission and controls the cost, the action can be realized obviously only by matching a plurality of parts, the structure is complex, and the pencil sharpener is very inconvenient to maintain and repair.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to prior art's current situation, provide a simple structure, the high-efficient low-cost delay drive mechanism of electronic ware of cutting of transmission.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a delay transmission mechanism of an electric pencil sharpener comprises

The pencil sharpener comprises a tool rest, a pencil sharpener and a pencil sharpening device, wherein the tool rest is driven by a driving structure to rotate around the axis of the tool rest, the tool rest is provided with a through hole for inserting a pencil, a pencil stopping block capable of moving up and down is arranged in the through hole, and the tool rest is also provided with a hob for sharpening the pencil;

the microswitch is used for controlling whether the driving structure works or not;

also includes:

the trigger piece is arranged below the tool rest and can move relative to the tool rest to be in a first position or a second position, the trigger piece prompts the micro switch to be in a conducting state to enable the driving structure to be in a non-working state under the condition that the trigger piece moves to the first position, and the trigger piece prompts the micro switch to be in a disconnecting state to enable the driving structure to be in a working state under the condition that the trigger piece moves to the second position;

the first resetting piece acts on the triggering piece to keep the triggering piece moving towards the direction of the first position;

the transmission rod can synchronously rotate along with the tool rest, the top of the transmission rod extends into the through hole and abuts against the pen stopping block, and a second reset piece enabling the transmission rod to keep moving upwards is arranged below the transmission rod;

the clutch structure is arranged between the transmission rod and the trigger piece, when the transmission rod moves down to a clutch position along with the pen stopping block, the rotation of the transmission rod can drive the trigger piece to move towards the second position direction, and under the action of the second reset piece, when the transmission rod moves up to a release position, the rotation of the transmission rod can not drive the trigger piece to move.

The clutch structure may be in various forms, and in order to ensure the transmission efficiency, preferably, the clutch structure includes at least one transmission gear disposed on an outer wall of a lower end of the transmission rod and a rack disposed on the trigger and matched with the transmission gear, and when the transmission rod moves down to the clutch position along with the pen stopping block, the transmission gear is intermittently engaged with the rack by rotation of the transmission rod, so as to drive the trigger to move toward the second position.

In order to ensure the fixing of the knife rest and the transmission rod, preferably, a gear seat and a mounting seat are sequentially arranged below the knife rest, the driving structure drives the knife rest and the transmission rod to rotate by driving the gear seat, connecting holes used for respectively connecting the bottom of the knife rest and the top of the mounting seat are respectively formed in the upper side and the lower side of the gear seat, the transmission rod is accommodated in the mounting seat, and a through hole for the transmission rod to penetrate out is formed in the top of the mounting seat.

In order to ensure that the trigger part has sufficient transmission space when moving, and can not produce the interference with the mount pad, preferably, the trigger part with still be equipped with the gear between the mount pad, the driving tooth pass through the gear with the rack meshes mutually set up on the lateral wall of mount pad bottom be convenient for the driving tooth with the mouth of dodging of gear engagement.

The first form of the trigger and the switch are matched: the microswitch is installed on the trigger piece and can move synchronously along with the trigger piece, a pressing plate which extends outwards along the radial direction of the mounting seat is arranged on the mounting seat, and under the condition that the trigger piece moves to the first position, a contact of the microswitch is abutted against the bottom of the pressing plate, so that the microswitch is in a conducting state.

Specifically, the microswitch and the rack are arranged on the same side, and the extension direction of the pressure plate is consistent with that of the trigger piece.

The other form that trigger piece and switch cooperate is: the trigger piece is arranged at the bottom of the micro switch, the micro switch is installed on the installation seat, a contact of the micro switch is arranged downwards and is always abutted against the upper surface of the trigger piece, a sliding groove used for releasing the contact of the micro switch is further formed in the trigger piece, and the contact of the micro switch is located in the sliding groove when the trigger piece moves to the first position, so that the micro switch is in a conducting state.

In order to ensure that the contact of the micro switch can slide smoothly to turn on or off the micro switch, at least one of the two ends of the sliding chute in the length direction is preferably an inclined surface inclined downwards along the sliding direction of the trigger.

Compared with the prior art, the utility model has the advantages of: in this delay drive mechanism of electronic sharpener, the transfer line can rotate and go deep into to the through-hole of knife rest along with the knife rest, move down with hindering the synchronous relative through-hole of a piece under the pencil effect, clutch structure just can make the rotation of transfer line drive trigger piece and move towards second position direction when the transfer line moves down to the separation and reunion position along with hindering a piece like this, and then make micro-gap switch be in the on-state, and the drive structure is in non-operating condition, through hindering a piece like this, transfer line and trigger piece cooperation, moreover, the steam generator is simple in structure, need not complicated part and just can realize the time delay transmission, and stable in structure, easy maintenance, the cost is lower, therefore, the clothes grinder is strong in.

Drawings

FIG. 1 is a schematic overall view of a delay drive mechanism according to a first embodiment;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a cross-sectional view at another angle to FIG. 2;

FIG. 4 is an exploded view of the delay actuator according to one embodiment;

FIG. 5 is a cross-sectional view of another angle of the retard drive mechanism in one embodiment;

FIG. 6 is an enlarged schematic view at A in FIG. 5;

FIG. 7 is a schematic diagram of an embodiment of a microswitch in a non-conducting state;

FIG. 8 is a schematic diagram of an embodiment in which a micro-switch is in a conducting state;

FIG. 9 is an overall view of a delay drive mechanism according to a second embodiment;

fig. 10 is an exploded view of a portion of fig. 9.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

The first embodiment is as follows:

as shown in fig. 1 to 8, in the present embodiment, the delay transmission mechanism of the electric pencil sharpener comprises a micro switch 1, a knife holder 2, a trigger 3, a transmission rod 4, a clutch structure and a first reset member 9. The tool rest 2 is driven by the driving structure 100 to rotate around the axis of the tool rest 2, the tool rest 2 is provided with a through hole 2a for inserting a pencil, a pencil block 22 capable of moving up and down is arranged in the through hole 2a, the tool rest 2 is also provided with a hob 21 for cutting the pencil, and the microswitch 1 is used for controlling the driving structure 100 to work or not.

In the present embodiment, the above-mentioned trigger member 3 is disposed below the tool holder 2 and can move relative to the tool holder 2 to be in the first position and the second position, in the state that the trigger member 3 moves to the first position, the trigger member 3 causes the micro switch 1 to be in the on state, so that the driving structure 100 is in the off state, in the state that the trigger member moves to the second position, the trigger member 3 causes the micro switch to be in the off state, so that the driving structure 100 is in the operating state, and the first reset member 9 acts on the trigger member 3 to keep the tendency of moving toward the first position.

In this embodiment, the transmission rod 4 can rotate synchronously with the tool holder 2, the top of the transmission rod 4 extends into the through hole 2a and abuts against the pen stopping block 22, a second resetting member 5 which enables the transmission rod 4 to keep moving upwards is arranged below the transmission rod 4, the clutch structure is arranged between the transmission rod 4 and the trigger member 3, when the transmission rod 4 moves downwards along with the pen stopping block 22 to the clutch position, the rotation of the transmission rod 4 can drive the trigger member 3 to move towards the second position direction, and when the transmission rod 4 moves upwards to the disengagement position under the action of the second resetting member 5, the rotation of the transmission rod 4 cannot drive the trigger member 3 to move. The clutch structure can have various forms, the clutch structure in this embodiment includes at least one transmission gear 41 disposed on the outer wall of the lower end of the transmission rod 4 and a rack 31 disposed on the trigger 3 and matched with the transmission gear 41, when the transmission rod 4 moves down to the clutch position along with the pen stopping block 22, the rotation of the transmission rod 4 causes the transmission gear 41 to intermittently mesh with the rack 31, and further drives the trigger 3 to move toward the second position, wherein the number of the transmission gears 41 is set according to the time required for closing, the more the transmission gears 41, the shorter the delay time, in this embodiment, one transmission gear is provided.

In this embodiment, in order to realize the installation and the rotation of tool rest 2, tool rest 2 below is equipped with gear seat 7 and mount pad 6 in proper order, and drive structure 100 drives tool rest 2 and transfer line 4 through drive gear seat 7 and rotates, and the upper and lower both sides of gear seat 7 all offer the connecting hole 71 that is used for connecting tool rest 2 bottom and mount pad 6 top respectively, and transfer line 4 holds in mount pad 6, and the top of mount pad 6 has the perforation 6a that supplies transfer line 4 to wear out.

The triggering member 3 may have different structures, in this embodiment, the triggering member 3 is substantially strip-shaped and is disposed on one side of the mounting seat 6, in order to ensure that the movement of the triggering member 3 does not interfere with the mounting seat 6 and ensure sufficient transmission space, a gear 8 is further disposed between the triggering member 3 and the mounting seat 6, the transmission gear 41 is engaged with the rack 31 through the gear 8, a side wall of the bottom of the mounting seat 6 is provided with an avoiding opening 61 for facilitating the engagement of the transmission gear 41 and the gear 8,

the micro switch 1 can be triggered in different forms, in this embodiment, the micro switch 1 is installed on the trigger 3 and can move synchronously with the trigger 3, the mounting seat 6 is provided with a pressing plate 62 extending radially outwards along the mounting seat 6, and when the trigger 3 moves to the first position, the contact of the micro switch 1 abuts against the bottom of the pressing plate 62, so that the micro switch 1 is in a conducting state, specifically, the micro switch 1 is arranged on the same side as the rack, and the extending direction of the pressing plate 62 is consistent with the trigger 3.

When the pencil sharpener works, a pencil is inserted into the through hole 2a, the tool rest 2 rotates under the driving action of the driving structure 100, the internal teeth drive the hob 21 to make planetary cutting motion around the pencil, the pen point of the pencil abuts against the pencil blocking block 22 after the pencil is cut, the pencil drives the pencil blocking block 22 and the transmission rod 4 to move downwards together until the transmission teeth 41 on the outer wall of the lower end of the transmission rod 4 move to the avoidance opening 61 on the side wall of the bottom of the mounting seat 6 and are meshed with the rack 31 on the trigger 3 through the gear 8, the transmission teeth 41 in the embodiment are preferably one, so that the whole transmission rod 4 rotates for one circle along with the tool rest 2, namely, the rack 31 of the trigger 3 is pushed to move by one tooth position, and the trigger 3 drives the contact of the microswitch 1 to abut against the bottom of the pressing plate 62, so that the microswitch 1 is.

Example two:

referring to fig. 9 and 10, the second embodiment of the present invention is different from the first embodiment in that: the trigger piece 3 is arranged at the bottom of the microswitch 1, the microswitch 1 is installed on the installation seat 6, the contact of the microswitch 1 is arranged downwards and is always abutted to the upper surface of the trigger piece 3, the trigger piece 3 is further provided with a sliding groove 3a used for releasing the contact of the microswitch 1, and the contact of the microswitch 1 is positioned in the sliding groove 3a when the trigger piece 3 moves to the first position, so that the microswitch 1 is in a conducting state. At least one of the two ends of the sliding groove 3a in the longitudinal direction is a slope inclined downward in the sliding direction of the trigger 3.

When the pencil sharpener works, a pencil is inserted into the through hole 2a, the tool rest 2 rotates under the driving action of the driver, the internal teeth drive the hob 21 to make planetary cutting motion around the pencil, the pen point of the pencil abuts against the pencil blocking block 22 after being cut, the pencil drives the pencil blocking block 22 and the transmission rod 4 to move downwards together until the transmission teeth 41 on the outer wall of the lower end of the transmission rod 4 move to the avoidance opening 61 on the side wall of the bottom of the mounting seat 6 and are meshed with the rack 31 on the trigger piece 3 through the gear 8, the transmission teeth 41 in the embodiment are preferably one, so that the whole transmission rod 4 rotates for one circle along with the tool rest 2, namely, the rack 31 of the trigger piece 3 is pushed to move by one tooth position, the movement of the trigger piece 3 generates relative displacement with the microswitch 1 fixed on the mounting seat 6, and as the contact point of the microswitch 1 is arranged downwards and always abuts against the upper surface of the, the microswitch 1 is therefore not switched on at all times, but the microswitch 1 is in the on state when the trigger 3 is moved to the point where the contact of the microswitch 1 just falls in the slide groove 3 a.

Claims (8)

1. A delay transmission mechanism of an electric pencil sharpener comprises

The pencil sharpener comprises a tool rest (2) driven by a driving structure (100) to rotate around the axis of the tool rest, wherein the tool rest (2) is provided with a through hole (2a) for inserting a pencil, a pencil blocking block (22) capable of moving up and down is arranged in the through hole (2a), and a hob (21) for sharpening the pencil is further arranged on the tool rest (2);

the microswitch (1) is used for controlling whether the driving structure (100) works or not;

it is characterized by also comprising:

the trigger piece (3) is arranged below the tool rest (2) and can move relative to the tool rest (2) to be in a first position or a second position, under the condition that the trigger piece (3) moves to the first position, the trigger piece (3) enables the micro switch (1) to be in a conducting state so that the driving structure (100) is in a non-working state, and under the condition that the trigger piece (3) moves to the second position, the trigger piece (3) enables the micro switch to be in a disconnecting state so that the driving structure (100) is in a working state;

a first reset member (9) acting on the trigger member (3) to keep the trigger member moving towards the first position;

the transmission rod (4) can synchronously rotate along with the tool rest (2), the top of the transmission rod (4) extends into the through hole (2a) and abuts against the pen stopping block (22), and a second resetting piece (5) enabling the transmission rod (4) to keep moving upwards is arranged below the transmission rod (4);

the separation and reunion structure is located between transfer line (4) and trigger piece (3), and when transfer line (4) moved down to the separation and reunion position along with hindering a piece (22), the rotation of transfer line (4) can drive trigger piece (3) and remove towards second position direction, resets under the effect of piece (5) at the second, when transfer line (4) shifted up to the separation and reunion position, the rotation of transfer line (4) can not drive trigger piece (3) and remove.

2. The delay drive mechanism of claim 1, wherein: the clutch structure comprises at least one transmission gear (41) arranged on the outer wall of the lower end of the transmission rod (4) and a rack (31) matched with the transmission gear (41), when the transmission rod (4) moves downwards to a clutch position along with the pen stopping block (22), the transmission gear (41) is intermittently meshed with the rack (31) through rotation of the transmission rod (4), and then the trigger (3) is driven to move towards the second position direction.

3. The delay drive mechanism of claim 2, wherein: knife rest (2) below is equipped with gear seat (7) and mount pad (6) in proper order, drive structure (100) drive knife rest (2) and transfer line (4) through drive gear seat (7) and rotate, connecting hole (71) that are used for connecting knife rest (2) bottom and mount pad (6) top respectively are all offered to the upper and lower both sides of gear seat (7), transfer line (4) holding is in mount pad (6), just the top of mount pad (6) has perforation (6a) that supply transfer line (4) to wear out.

4. The delay drive mechanism of claim 3, wherein: trigger piece (3) with still be equipped with gear (8) between mount pad (6), driving gear (41) pass through gear (8) with rack (31) mesh mutually set up on the lateral wall of mount pad (6) bottom be convenient for driving gear (41) with the mouth (61) of dodging of gear (8) meshing.

5. The delay drive mechanism of claim 4, wherein: micro-gap switch (1) is installed trigger piece (3) are gone up and can be along with trigger piece (3) synchronous motion, be equipped with on mount pad (6) along radial outside clamp plate (62) that extend of mount pad (6) trigger piece (3) remove to the state of primary importance under, the contact of micro-gap switch (1) supports and leans on the bottom of clamp plate (62), so that micro-gap switch (1) is in the on-state.

6. The delay drive mechanism of claim 5, wherein: the microswitch (1) and the rack are arranged on the same side, and the extension direction of the pressure plate (62) is consistent with that of the trigger piece (3).

7. The delay drive mechanism of claim 6, wherein: trigger piece (3) are arranged the bottom of micro-gap switch (1), micro-gap switch (1) is installed on mount pad (6), and its contact sets up down and all the time with the upper surface of trigger piece (3) offsets, still be equipped with spout (3a) that are used for releasing micro-gap switch (1) contact on trigger piece (3) remove under the state of first position, micro-gap switch (1) contact is in spout (3a), so that micro-gap switch (1) is in the on-state.

8. The delay drive mechanism of claim 7, wherein: at least one of two ends of the sliding chute (3a) in the length direction is an inclined surface inclined downwards along the sliding direction of the trigger piece (3).

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