CN219505751U - Clutch structure, pencil feeding mechanism and pencil sharpener - Google Patents
Clutch structure, pencil feeding mechanism and pencil sharpener Download PDFInfo
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- CN219505751U CN219505751U CN202320474422.7U CN202320474422U CN219505751U CN 219505751 U CN219505751 U CN 219505751U CN 202320474422 U CN202320474422 U CN 202320474422U CN 219505751 U CN219505751 U CN 219505751U
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Abstract
The utility model provides a clutch structure, including setting up driving transmission spare and driven transmission spare on same pivot, driving transmission spare and driven transmission spare coaxial cover are established and are set up radial elasticity meshing structure between the two, perhaps driving transmission spare and driven transmission spare axial butt joint and set up axial elasticity meshing structure between the two, radial elasticity meshing structure is including setting up a plurality of first convex parts on the periphery lateral wall of inside transmission spare, and set up an elasticity on outside transmission spare and hold the claw, one side of first convex part is the inclined plane and the opposite side is the straight face, axial elasticity meshing structure is including setting up a plurality of second convex parts on the butt joint terminal surface of one of them and setting up a plurality of concave parts on another butt joint terminal surface, one side of second convex part is the inclined plane and the opposite side is the straight face. The clutch structure can slip when forward rotation is blocked, and can be kept engaged when reverse rotation is blocked. In addition, a pen feeding mechanism and a pencil sharpener are also provided.
Description
Technical Field
The utility model relates to the technical field of pencil sharpening machines, in particular to a clutch structure, a pencil feeding mechanism and a pencil sharpening machine.
Background
The utility model patent of China with the publication number of CN 217145458U discloses a pencil feeding mechanism of a pencil sharpener, the structure of the pencil feeding mechanism is shown in figure 1, the pencil feeding mechanism comprises a bracket 1a, a rotary table 2a, a first rotary shaft 3a, a second rotary shaft 4a, a first pencil clamping wheel 5a and a second pencil clamping wheel 6a, the first rotary shaft 3a and the second rotary shaft 4a are rotatably supported by the bracket 1a, a transmission structure 11a is arranged between the rotary table 2a and the first rotary shaft 3a and the second rotary shaft 4a, the first pencil clamping wheel 5a is arranged on the first rotary shaft 3a and driven by the first rotary shaft 3a, the second pencil clamping wheel 6a is arranged on the second rotary shaft 4a and driven by the second rotary shaft 4a, the first pencil clamping wheel 5a and the second pencil clamping wheel 6a are driven to advance/retreat, the first rotary shaft 3a is axially sleeved with a clutch structure, or the second rotary shaft 4a is axially sleeved with a clutch structure, or the first rotary shaft 3a and the second rotary shaft 4a are axially sleeved with a clutch structure, the clutch structure is respectively provided with a clutch structure, the clutch structure is axially sleeved with a driving piece 7a and a driven piece 8 and a corresponding side wall 7a is connected between the driving piece and a peripheral piece 8 and a driving piece and a peripheral piece 8 are connected to the driving piece and a peripheral piece 7a and a driving piece and a peripheral piece and a driving piece and are connected; the clutch member is an elastic engagement structure, and the elastic engagement structure comprises a plurality of concave parts 10a arranged on the inner peripheral side wall of the driving transmission member 7a and a plurality of convex parts 9a arranged on the outer peripheral side wall of the driven transmission member 8a, wherein one end of each convex part 9a is fixed, and the other end of each convex part is elastically swingable.
The working principle of the pencil feeding mechanism of the pencil sharpener is as follows: when a pen is fed, the rotary table 2a rotates positively to drive two driving transmission parts 7a connected with the driving transmission parts to rotate, then each driving transmission part 7a drives a driven transmission part 8a meshed with the driving transmission part to rotate, then each driven transmission part 8a drives a first rotating shaft 3a and a second rotating shaft 4a connected with the driven transmission part in a circumferential transmission way to rotate, finally, the first pen clamping wheel 5a and the second pen clamping wheel 6a on the first rotating shaft 3a and the second rotating shaft 4a rotate oppositely to feed the pen, and the concave part 10a of the clutch part is meshed with the convex part 9a in the forward rotation process; then, the pencil sharpening mechanism starts sharpening, resistance is generated to the movement of the pencil, the movement of the first rotating shaft 3a and the second rotating shaft 4a is blocked, so that the movement of the driven transmission part 8a is also blocked, the driving transmission part 7a still rotates along with the rotary table 2a, the driving transmission part 7a overcomes the radial elasticity and is radially separated from the driven transmission part 8a and rotates relative to the driven transmission part 8a, the concave part 10a of the clutch part and the convex part 9a slide relatively, the driving transmission part 7a can not drive the driven transmission part 8a any more, the first rotating shaft 3a and the second rotating shaft 4a stop rotating, and the first pencil clamping wheel 5a and the second pencil clamping wheel 6a can not drive the pencil to continue to feed the pencil; after the planing is finished at the contact part of the pencil and the pencil sharpening mechanism, the pencil is not blocked, and the pencil starts to enter the pencil again, so that the pencil is continuously entered and is continuously planed, and the concave part 10a and the convex part 9a of the clutch piece are continuously meshed and skid until the pencil sharpening is finished. The pencil feeding mechanism of the pencil sharpener can stop pencil feeding when the pencil sharpening mechanism shaves, and the problems of broken cores, burrs and the like are effectively avoided.
However, the following technical problems still exist in the existing pencil sharpener pencil feeding mechanism: the clutch structure of the pen-returning device can slip under the condition that forward rotation of the pen is resisted, so that the pen-returning device can also slip under the condition that reverse rotation of the pen is resisted, and the slipping condition is not expected to occur in the pen-returning process, so that the pen-returning is not fast and reliable.
Disclosure of Invention
The utility model aims to solve the technical problems of overcoming the defects of the prior art and providing a clutch structure which can not only slip when the forward rotation is blocked, but also keep engagement when the reverse rotation is blocked; the pen feeding mechanism is also provided, so that the pen feeding mechanism can slip when the forward rotation pen feeding is blocked, and can be meshed when the reverse rotation pen returning is blocked; a pencil sharpener is also provided, which can slip when the forward rotation pencil is blocked and can keep engaged when the backward rotation pencil is blocked.
Compared with the prior art, the clutch structure comprises a driving transmission part and a driven transmission part which are arranged on the same rotating shaft, wherein the driven transmission part is used for being in circumferential transmission connection with the rotating shaft, the driving transmission part is used for being in transmission connection with a driving device, a radial elastic meshing structure is arranged between the driving transmission part and the driven transmission part in a sleeved mode, or the driving transmission part and the driven transmission part are axially butted and are provided with an axial elastic meshing structure between the driving transmission part and the driven transmission part, the radial elastic meshing structure comprises a plurality of first convex parts arranged on the peripheral side wall of the inner transmission part in the driving transmission part and the driven transmission part, and a plurality of elastic holding claws arranged on the outer transmission part, one side of the first convex parts is an inclined surface, the other side of the first convex parts is a straight surface, the elastic holding claws are meshed with one inclined surface of the first convex parts when the driving device rotates positively, the elastic holding claws can slide relatively with the first convex parts when the driven transmission part rotates blocked, the elastic holding claws are meshed with one side of the straight surface of the first convex parts all the other side, the axial elastic meshing structure comprises a plurality of first convex parts arranged on one side of the driving transmission part and one side of the driven transmission part, and a plurality of second convex parts can be meshed with the other side of the second convex parts when the driving device rotates relatively to the second convex parts, and the other side of the elastic holding claws can slide relatively with the second convex parts when the driving device rotates relatively to the first convex parts.
The clutch structure of the utility model has the following working principle: the driving device rotates positively to drive the driving transmission part in transmission connection with the driving device to rotate, then the driving transmission part drives the driven transmission part engaged with the driving device to rotate, and finally the driven transmission part drives the rotating shaft in circumferential transmission connection with the driven transmission part to rotate, and the elastic holding claw is engaged with one side of the inclined plane of the first convex part or one side of the inclined plane of the concave part is engaged with one side of the inclined plane of the second convex part in the forward rotation process; in the forward rotation process of the driving device, if the rotation of the driven transmission part is blocked, the driving transmission part still rotates along with the driving device, then the driving transmission part overcomes the radial or axial elasticity and is separated from the driven transmission part and rotates relative to the driven transmission part, so that the elastic holding claw can slide relative to the first convex part or the concave part and the second convex part, the driving transmission part can not drive the driven transmission part any more, and the rotating shaft stops rotating; the driving device reverses to drive the driving transmission piece in transmission connection with the driving device to rotate, the driving transmission piece drives the driven transmission piece to rotate again, and finally the rotating shaft is driven to reverse, and the elastic holding claw is always meshed with one side of the straight surface of the first convex part or one side of the straight surface of the concave part is always meshed with one side of the straight surface of the second convex part in the reversing process.
After adopting the structure, compared with the prior art, the utility model has the following advantages: the clutch structure of the utility model is provided with a radial elastic meshing structure or an axial elastic meshing structure between the driving transmission piece and the driven transmission piece, one side of the first convex part or the second convex part is an inclined plane, the other side is a straight plane, the inclined plane can enable the positive rotation to be blocked and the straight plane can ensure that the meshing is kept not to be slipped when the reverse rotation is blocked.
Preferably, the elastic holding claw is C-shaped, one end of the elastic holding claw is integrally formed with the side wall of the corresponding transmission member, the other end is a free end, and a claw part engaged with the first protruding part is arranged on the end. The elastic holding claw is simple in structure and convenient to process, not only has claw parts meshed with the first convex parts, but also has radial deformation capacity, so that an additional structure is not needed to be additionally arranged to form an elastic space required by radial separation of the elastic holding claw and the first convex parts.
Preferably, the axial elastic meshing structure further comprises an elastic piece which is arranged on the rotating shaft and is positioned on one side of the driven transmission piece away from the driving transmission piece, when the driving transmission piece is axially abutted with the driven transmission piece, the driven transmission piece can be axially and slidably connected with the rotating shaft, one side of the driven transmission piece is abutted against the driving transmission piece, and the elastic piece applies elastic acting force which enables the driven transmission piece to be pressed and attached with the driving transmission piece to the driven transmission piece. The driven transmission part is axially and slidably connected with the rotating shaft, and an elastic space required by axial separation of the concave part and the second convex part can be formed by using the elastic part, so that the structure is very simple, and the provided elastic pressing force can ensure that the driven transmission part is reliably connected with the driving transmission part.
Preferably, a transition section is further arranged between the inclined surface and the straight surface of the first convex part. This arrangement can make the slip smoother.
Compared with the prior art, the utility model further provides a pen feeding mechanism, which comprises a bracket, a rotary table, a first rotary shaft, a second rotary shaft, a first pen clamping wheel and a second pen clamping wheel, wherein the first rotary shaft and the second rotary shaft are rotatably supported by the bracket, a transmission structure is arranged between the rotary table and the first rotary shaft and between the rotary table and the second rotary shaft, the first pen clamping wheel is arranged on the first rotary shaft and is driven to rotate by the first rotary shaft, the second pen clamping wheel is arranged on the second rotary shaft and is driven to rotate by the second rotary shaft, the first rotary shaft is axially sleeved with the clutch structure, or the second rotary shaft is axially sleeved with the clutch structure, or the first rotary shaft and the second rotary shaft are axially sleeved with the clutch structure, a driving transmission part of the clutch structure is in transmission connection with the rotary table through the transmission structure, and a driven transmission part of the clutch structure is in circumferential transmission connection with the corresponding rotary shaft.
After adopting the structure, compared with the prior art, the utility model has the following advantages: the pen feeding mechanism of the utility model is provided with the clutch structure, so that the pen feeding mechanism not only can slip when the forward rotation pen is blocked, but also can keep meshing when the reverse rotation pen is blocked, and the pen feeding is fast and reliable.
Preferably, mounting seats for mounting the ends of the first rotating shaft and the second rotating shaft are arranged on two sides of the support, one side of the elastic piece of the axial elastic meshing structure abuts against the driven transmission piece, and the other side abuts against the mounting seats. This arrangement makes the mounting of the elastic element very convenient and simple.
Compared with the prior art, the utility model also provides a pencil sharpener, which comprises a pencil sharpening mechanism and the pencil feeding mechanism and is used for conveying pencils to the pencil sharpening mechanism for sharpening.
After adopting the structure, compared with the prior art, the utility model has the following advantages: the pencil sharpener of the utility model is provided with the pencil feeding mechanism, so that the pencil sharpener not only can slip when the forward pencil feeding is blocked, but also can keep meshed when the backward pencil feeding is blocked, and the pencil feeding is fast and reliable.
Description of the drawings:
FIG. 1 is a schematic view of a pencil feeding mechanism of a conventional pencil sharpener;
FIG. 2 is a schematic diagram of the clutch structure in embodiment 1;
FIG. 3 is another schematic view of the clutch structure in embodiment 1;
FIG. 4 is a schematic structural view of the clutch structure in embodiment 2;
FIG. 5 is a schematic view of the pen feeding mechanism in embodiment 3;
fig. 6 is a schematic structural diagram of the pen feeding mechanism in embodiment 3 when the pen feeding mechanism is hidden behind the bracket and the elastic holding claw abuts against one side of the inclined plane;
fig. 7 is a schematic structural diagram of the pen feeding mechanism in embodiment 3 when the pen feeding mechanism is hidden behind the bracket and the elastic holding claw abuts against one side of the straight surface;
FIG. 8 is a schematic view of the pen feeding mechanism in embodiment 4;
fig. 9 is a schematic view of the pencil sharpener of embodiment 5;
fig. 10 is a schematic view of the pencil sharpener of embodiment 6;
in the prior art diagram: 1 a-bracket, 2 a-turntable, 3 a-first rotating shaft, 4 a-second rotating shaft, 5 a-first pen-holding wheel, 6 a-second pen-holding wheel, 7 a-driving transmission piece, 8 a-driven transmission piece, 9 a-convex part, 10 a-concave part and 11 a-transmission structure;
in the drawings of the utility model: the pen holder comprises a 1-rotating shaft, a 2-driving transmission part, a 3-driven transmission part, a 4-first convex part, a 5-elastic holding claw, a 6-second convex part, a 7-concave part, an 8-claw part, a 9-elastic part, a 10-support, an 11-rotating disc, a 12-first rotating shaft, a 13-second rotating shaft, a 14-first pen clamping wheel, a 15-second pen clamping wheel, a 16-clutch structure, a 17-transmission structure, a 18-mounting seat, a 19-pen cutting mechanism, a 20-pen feeding mechanism, an A-inclined plane, a B-straight plane and a C-transition section.
Detailed Description
The utility model will be further described with reference to the accompanying drawings, in conjunction with examples.
Example 1:
the embodiment provides a clutch structure, as shown in fig. 2-3, including driving transmission member 2 and driven transmission member 3 that set up on same pivot 1, for the convenience of understanding, all illustrated pivot 1 in fig. 2-3, driven transmission member 3 is used for being connected with pivot 1 circumference transmission, driving transmission member 2 is used for being connected with a drive arrangement transmission, driving transmission member 2 and driven transmission member 3 are with the axle sleeve setting and between the two setting up radial elasticity meshing structure, radial elasticity meshing structure includes a plurality of first convex parts 4 that set up on the periphery lateral wall of the inside transmission member in driving transmission member 2 and driven transmission member 3, and an elasticity embracing claw 5 that sets up on outside transmission member, in this embodiment, driving transmission member 2 cover is in the outside of driven transmission member 3, and first convex parts 4 set up on the periphery lateral wall of driven transmission member 3, and elasticity embracing claw 5 sets up on driving transmission member 2, and first convex parts 4 set up six, one side of first convex parts 4 is inclined plane A and the opposite side is straight face B for making when driving arrangement just embraces the rotation and makes first convex parts 4 and elasticity embracing claw 5 and slip and make and rotate and advance and draw in contrast and advance and the first convex parts 4 and slip and make and the opposite side and make and slip and the side and make and rotate and the opposite sides and the first side 4 and the opposite sides and the meshing.
The elastic holding claw 5 is C-shaped, one end of the elastic holding claw 5 is integrally formed with the side wall of the corresponding transmission member, the other end is a free end, and a claw part 8 meshed with the first convex part 4 is arranged on the end; a transition section C is further arranged between the inclined surface A and the straight surface B of the first convex part 4.
The clutch structure 16 in this embodiment works as follows: the driving device rotates positively to drive the driving transmission piece 2 in transmission connection with the driving transmission piece to rotate, then the driving transmission piece 2 drives the driven transmission piece 3 meshed with the driving transmission piece to rotate, and finally the driven transmission piece 3 drives the rotating shaft 1 in circumferential transmission connection with the driven transmission piece to rotate, and in the forward rotation process, the elastic holding claw 5 of the driving transmission piece 2 is meshed with one side of the inclined plane A of the first convex part 4 of the driven transmission piece 3; in the forward rotation process of the driving device, if the rotation of the driven transmission member 3 is blocked, as the driving transmission member 2 still rotates along with the driving device, the driving transmission member 2 overcomes the radial elasticity of the elastic holding claw 5 and is radially separated from the driven transmission member 3 and rotates relative to the driven transmission member 3, so that the elastic holding claw 5 of the driving transmission member 2 slides relative to the first convex part 4 of the driven transmission member 3, the driving transmission member 2 can not drive the driven transmission member 3 any more, and the rotation of the rotating shaft 1 stops; the driving device reverses to drive the driving transmission piece 2 in transmission connection with the driving transmission piece to rotate, the driving transmission piece 2 drives the driven transmission piece 3 to rotate again, and finally the rotating shaft 1 is driven to reverse, and the elastic holding claw 5 of the driving transmission piece 2 is always meshed with one side of the straight surface B of the first convex part 4 of the driven transmission piece 3 in the reversing process.
Example 2:
the present embodiment provides a clutch structure, as shown in fig. 4, including a driving transmission member 2 and a driven transmission member 3 disposed on the same rotating shaft 1, in order to facilitate understanding, in fig. 4, the rotating shaft 1 is illustrated, the driven transmission member 3 is configured to be in transmission connection with the rotating shaft 1 in a circumferential direction, the driving transmission member 2 is configured to be in transmission connection with a driving device, the driving transmission member 2 and the driven transmission member 3 are axially abutted and between them provided with an axially elastic engagement structure, the axially elastic engagement structure includes a plurality of second protrusions 6 disposed on an abutting end surface of one of the driving transmission member 2 and the driven transmission member 3, and a plurality of recesses 7 disposed on the other abutting end surface, in this embodiment, the second protrusions 6 are disposed on the abutting end surface of the driving transmission member 2, the recesses 7 are disposed on the abutting end surface of the driven transmission member 3, the first protrusions 4 and the recesses 7 are all configured to be six, one side of the second protrusions 6 is a slant surface a and the other side is a straight surface B, when the driving device is rotated forward, the recesses 7 are engaged with the slant surface a side of the second protrusions 6 and when the driven transmission member 3 is rotated relatively, and the second protrusions 6 are engaged with the straight protrusions 6 when the driving device is prevented from rotating relatively.
The axial elastic meshing structure further comprises an elastic piece 9 which is arranged on the rotating shaft 1 and is positioned on one side, far away from the driving transmission piece 2, of the driven transmission piece 3, when the driving transmission piece 2 is axially abutted to the driven transmission piece 3, the driven transmission piece 3 can be axially and slidably connected with the rotating shaft 1, one side of the driven transmission piece 3 is abutted to the driving transmission piece 2, and the elastic piece 9 applies elastic acting force which enables the driven transmission piece 3 to be pressed and attached to the driving transmission piece 2 to the driven transmission piece 3.
The clutch structure 16 in this embodiment works as follows: the driving device rotates positively to drive the driving transmission part 2 in transmission connection with the driving transmission part to rotate, then the driving transmission part 2 drives the driven transmission part 3 meshed with the driving transmission part to rotate, and finally the driven transmission part 3 drives the rotating shaft 1 in circumferential transmission connection with the driving transmission part to rotate, and in the forward rotation process, the concave part 7 of the driven transmission part 3 is meshed with one side of the inclined plane A of the second convex part 6 of the driving transmission part 2; in the forward rotation process of the driving device, if the rotation of the driven transmission member 3 is blocked, as the driving transmission member 2 still rotates along with the driving device, the driving transmission member 2 overcomes the axial elastic force of the elastic member 9 and is axially separated from the driven transmission member 3 and rotates relative to the driven transmission member 3, so that the concave portion 7 of the driven transmission member 3 and the second convex portion 6 of the driving transmission member 2 relatively slip, the driving transmission member 2 can not drive the driven transmission member 3 any more, and the rotation of the rotating shaft 1 stops; the driving device reverses to drive the driving transmission member 2 in transmission connection with the driving transmission member to rotate, the driving transmission member 2 drives the driven transmission member 3 to rotate again, and finally the rotating shaft 1 is driven to reverse, and the concave part 7 of the driven transmission member 3 is always meshed with one side of the straight surface B of the second convex part 6 of the driving transmission member 2 in the reversing process.
Example 3:
the embodiment provides a pen feeding mechanism, as shown in fig. 5-7, which comprises a bracket 10, a rotary table 11, a first rotary shaft 12, a second rotary shaft 13, a first pen clamping wheel 14 and a second pen clamping wheel 15, wherein the first rotary shaft 12 and the second rotary shaft 13 are rotatably supported by the bracket 10, a transmission structure 17 is arranged between the rotary table 11 and the first rotary shaft 12 and between the rotary table 11 and the second rotary shaft 13, the first pen clamping wheel 14 is arranged on the first rotary shaft 12 and is driven by the first rotary shaft 12 to rotate, the second pen clamping wheel 15 is arranged on the second rotary shaft 13 and is driven by the second rotary shaft 13 to rotate, in the embodiment, a clutch structure 16 in the embodiment 1 is sleeved on each axial direction of the first rotary shaft 12 and the second rotary shaft 13, a driving transmission member 2 of the clutch structure 16 is in transmission connection with the rotary table 11 through the transmission structure 17, the rotary table 11 is driven by a driving device, and a driven transmission member 3 of the clutch structure 16 is in transmission connection with the corresponding rotary shaft in the circumferential direction; of course, only the clutch structure 16 in embodiment 1 may be axially sleeved on the first rotating shaft 12, or only the clutch structure 16 in embodiment 1 may be axially sleeved on the second rotating shaft 13, and only one rotating shaft stops rotating, the pen clamping wheel on the corresponding rotating shaft stops rotating, so that pen cannot enter.
Example 4:
the embodiment provides a pen feeding mechanism, as shown in fig. 8, which comprises a bracket 10, a rotary table 11, a first rotary shaft 12, a second rotary shaft 13, a first pen clamping wheel 14 and a second pen clamping wheel 15, wherein the first rotary shaft 12 and the second rotary shaft 13 are rotatably supported by the bracket 10, a transmission structure 17 is arranged between the rotary table 11 and the first rotary shaft 12 and between the rotary table 11 and the second rotary shaft 13, the first pen clamping wheel 14 is arranged on the first rotary shaft 12 and is driven to rotate by the first rotary shaft 12, the second pen clamping wheel 15 is arranged on the second rotary shaft 13 and is driven to rotate by the second rotary shaft 13, in the embodiment, a clutch structure 16 in the embodiment 2 is sleeved on each axial direction of the first rotary shaft 12 and the second rotary shaft 13, a driving transmission member 2 of the clutch structure 16 is in transmission connection with the rotary table 11 through the transmission structure 17, the rotary table 11 is driven by a driving device, and a driven transmission member 3 of the clutch structure 16 is in circumferential transmission connection with the corresponding rotary shaft; of course, only the clutch structure 16 in embodiment 2 may be axially sleeved on the first rotating shaft 12, or only the clutch structure 16 in embodiment 2 may be axially sleeved on the second rotating shaft 13, and only one rotating shaft stops rotating, the pen clamping wheel on the corresponding rotating shaft stops rotating, so that pen cannot enter.
The two sides of the bracket 10 are provided with mounting seats 18 for mounting the ends of the first rotating shaft 12 and the second rotating shaft 13, one side of the elastic piece 9 of the axial elastic meshing structure is propped against the driven transmission piece 3, and the other side is propped against the mounting seats 18.
Example 5:
this embodiment provides a pencil sharpener, as shown in fig. 9, and in combination with fig. 5-7, comprising a pencil sharpening mechanism 19, and further comprising a pencil feeding mechanism 20 of embodiment 3 for feeding pencils to the pencil sharpening mechanism 19 for sharpening.
The working principle of the pencil sharpener in this embodiment is as follows: when a pen is fed, the rotary table 11 rotates positively to drive two driving transmission parts 2 in transmission connection with the rotary table to rotate, then each driving transmission part 2 drives a driven transmission part 3 meshed with the driving transmission parts to rotate, then each driven transmission part 3 drives a first rotary shaft 12 and a second rotary shaft 13 in circumferential transmission connection with the driven transmission parts to rotate, and finally the first pen clamping wheel 14 and the second pen clamping wheel 15 on the first rotary shaft 12 and the second rotary shaft 13 rotate oppositely to feed the pen, and in the forward rotation process, the elastic holding claw 5 of the driving transmission part 2 is meshed with one side of the inclined plane A of the first convex part 4 of the driven transmission part 3; then, the pencil sharpening mechanism 19 starts sharpening, resistance is generated to the movement of the pencil, the movement of the first rotating shaft 12 and the second rotating shaft 13 is blocked, so that the movement of the driven transmission member 3 is blocked, and the driving transmission member 2 still rotates along with the turntable 11, so that the driving transmission member 2 overcomes the radial elasticity of the elastic holding claw 5 and is radially separated from the driven transmission member 3 and rotates relative to the driven transmission member 3, the elastic holding claw 5 of the driving transmission member 2 slides relative to the first convex part 4 of the driven transmission member 3, the driving transmission member 2 can not drive the driven transmission member 3 any more, the first rotating shaft 12 and the second rotating shaft 13 stop rotating, and the first pencil clamping wheel 14 and the second pencil clamping wheel 15 can not drive the pencil to continue to feed the pencil, so that the pencil feeding can be stopped when the pencil sharpening mechanism 19 skives, and the problems of broken cores, burrs and the like are effectively avoided; after the planing is finished at the contact part of the pencil and the pencil sharpening mechanism 19, the pencil is not blocked, and the pencil starts to enter again, so that the pencil is continuously entered and planing is continuously carried out, and the elastic holding claw 5 of the driving transmission member 2 is continuously meshed and slipped with the first convex part 4 of the driven transmission member 3 until the pencil sharpening is finished; after finishing pencil sharpening, the pencil starts to be withdrawn, the rotary table 11 reverses to drive the driving transmission member 2 in transmission connection with the driving transmission member to rotate, the driving transmission member 2 drives the driven transmission member 3 to rotate again, and then drives the first rotary shaft 12 and the second rotary shaft 13 to reverse, so that the first pencil clamping wheel 14 and the second pencil clamping wheel 15 rotate reversely to withdraw the pencil, the elastic holding claw 5 of the driving transmission member 2 is always meshed with one side of the straight surface B of the first convex part 4 of the driven transmission member 3 in the reversing process, slipping in the reversing pencil withdrawing process can be avoided, and the fast and reliable pencil withdrawing is ensured.
Example 6:
the present embodiment provides a pencil sharpener, as shown in fig. 10, and in combination with fig. 8, comprising a pencil sharpening mechanism 19, and further comprising a pencil feeding mechanism 20 of embodiment 4 for feeding pencils to the pencil sharpening mechanism 19 for sharpening pencils.
The working principle of the pencil sharpener in this embodiment is as follows: when a pen is fed, the rotary table 11 rotates positively to drive two driving transmission parts 2 in transmission connection with the rotary table to rotate, then each driving transmission part 2 drives a driven transmission part 3 meshed with the driving transmission parts to rotate, then each driven transmission part 3 drives a first rotary shaft 12 and a second rotary shaft 13 in circumferential transmission connection with the driven transmission parts to rotate, finally, the first pen clamping wheel 14 and the second pen clamping wheel 15 on the first rotary shaft 12 and the second rotary shaft 13 rotate oppositely to feed the pen, and the concave part 7 of the driven transmission part 3 is meshed with one side of an inclined plane A of a second convex part 6 of the driving transmission part 2 in the forward rotation process; then, the pencil sharpening mechanism 19 starts sharpening, resistance is generated to the movement of the pencil, the movement of the first rotating shaft 12 and the second rotating shaft 13 is blocked, so that the movement of the driven transmission member 3 is blocked, the driving transmission member 2 still rotates along with the turntable 11, the driving transmission member 2 overcomes the axial elastic force of the elastic member 9 and is axially separated from the driven transmission member 3 and rotates relative to the driven transmission member 3, the concave part 7 of the driven transmission member 3 slides relative to the second convex part 6 of the driving transmission member 2, the driving transmission member 2 can not drive the driven transmission member 3 any more, the first rotating shaft 12 and the second rotating shaft 13 stop rotating, and the first pencil clamping wheel 14 and the second pencil clamping wheel 15 can not drive the pencil to continue to enter the pencil, so that the pencil can stop entering the pencil when the pencil sharpening mechanism 19 is shaved, and the problems of broken pencil lead, burr and the like are effectively avoided; after the planing is finished at the contact part of the pencil and the pencil sharpening mechanism 19, the pencil is not blocked, and the pencil starts to enter again, so that the pencil is continuously entered and is continuously planed, and the concave part 7 of the driven transmission member 3 is continuously meshed with and slipped from the second convex part 6 of the driving transmission member 2 until the pencil sharpening is finished; after finishing pencil sharpening, the pencil starts to be withdrawn, the rotary table 11 reverses to drive the driving transmission part 2 in transmission connection with the pencil to rotate, the driving transmission part 2 drives the driven transmission part 3 to rotate again, then drives the first rotary shaft 12 and the second rotary shaft 13 to reverse, finally realizes that the first pencil clamping wheel 14 and the second pencil clamping wheel 15 reversely rotate to withdraw the pencil, the concave part 7 of the driven transmission part 3 is always meshed with one side of the straight surface B of the second convex part 6 of the driving transmission part 2 in the reversing process, slipping in the reversing pencil withdrawing process can be avoided, and quick and reliable pencil withdrawal is ensured.
Claims (7)
1. The utility model provides a clutch structure, includes initiative driving medium (2) and driven driving medium (3) of setting on same pivot (1), driven driving medium (3) are used for being connected with pivot (1) circumference transmission, initiative driving medium (2) are used for being connected its characterized in that with a drive arrangement transmission: the driving transmission part (2) and the driven transmission part (3) are coaxially sleeved and are provided with a radial elastic meshing structure, or the driving transmission part (2) and the driven transmission part (3) are axially abutted and are provided with an axial elastic meshing structure between the two, the radial elastic meshing structure comprises a plurality of first convex parts (4) arranged on the peripheral side wall of the inner transmission part in the driving transmission part (2) and the driven transmission part (3) and a plurality of elastic holding claws (5) arranged on the outer transmission part, one side of the first convex parts (4) is an inclined surface (A) and the other side is a straight surface (B), the elastic holding claws (5) are meshed with one side of the inclined surface (A) of the first convex parts (4) when the driving device rotates positively and are enabled to be opposite to the first convex parts (4) when the rotation of the driven transmission part (3) is blocked, the elastic holding claws (5) are enabled to be always meshed with one side of the straight surface (B) of the first convex parts (4) when the driving device rotates reversely, the axial elastic meshing structure comprises a plurality of straight surfaces (B) arranged on one side of the driving transmission part (2) and one side of the other side of the second convex parts (6) which is abutted with the other side (6), for engaging the recess (7) with the inclined surface (A) side of the second protrusion (6) when the driving device is rotated forward and for enabling the recess (7) to slip relative to the second protrusion (6) when the rotation of the driven transmission member (3) is blocked, and for engaging the recess (7) with the straight surface (B) side of the second protrusion (6) at all times when the driving device is rotated backward.
2. A clutch structure according to claim 1, wherein: the elastic holding claw (5) is C-shaped, one end of the elastic holding claw (5) is integrally formed with the side wall of the corresponding transmission piece, the other end of the elastic holding claw is a free end, and a claw part (8) meshed with the first convex part (4) is arranged on the free end of the elastic holding claw.
3. A clutch structure according to claim 1, wherein: the axial elastic meshing structure further comprises an elastic piece (9) which is arranged on the rotating shaft (1) and located on one side, away from the driving transmission piece (2), of the driven transmission piece (3), when the driving transmission piece (2) is axially abutted to the driven transmission piece (3), the driven transmission piece (3) can be axially and slidably connected with the rotating shaft (1), one side of the driven transmission piece (3) abuts against the driving transmission piece (2), and the elastic piece (9) applies elastic acting force which enables the driven transmission piece (3) to be tightly attached to the driving transmission piece (2).
4. A clutch structure according to claim 1, wherein: a transition section (C) is further arranged between the inclined surface (A) and the straight surface (B) of the first convex part (4).
5. The utility model provides a pen feeding mechanism, includes support (10), carousel (11), first pivot (12), second pivot (13), first clamp pen wheel (14) and second clamp pen wheel (15), first pivot (12), second pivot (13) are rotated by support (10) and are supported, be equipped with transmission structure (17) between carousel (11) and first pivot (12), second pivot (13), first clamp pen wheel (14) are installed in first pivot (12) and are driven the rotation by first pivot (12), second clamp pen wheel (15) are installed in second pivot (13) and are driven the rotation by second pivot (13), its characterized in that: any one of the clutch structures (16) according to the claims 1 to 4 is axially sleeved on the first rotating shaft (12), or any one of the clutch structures (16) according to the claims 1 to 4 is axially sleeved on the second rotating shaft (13), or any one of the clutch structures (16) according to the claims 1 to 4 is axially sleeved on each of the first rotating shaft (12) and the second rotating shaft (13), a driving transmission part (2) of the clutch structure (16) is in transmission connection with the rotary disc (11) through a transmission structure (17), and a driven transmission part (3) of the clutch structure (16) is in circumferential transmission connection with the corresponding rotating shaft (1).
6. The pen feeding mechanism according to claim 5, wherein: the two sides of the bracket (10) are provided with mounting seats (18) for mounting the ends of the first rotating shaft (12) and the second rotating shaft (13), one side of the elastic piece (9) of the axial elastic meshing structure is propped against the driven transmission piece (3), and the other side is propped against the mounting seats (18).
7. A pencil sharpener comprising a pencil sharpening mechanism (19), characterized in that: further comprising a pencil feeding mechanism (20) according to any one of claims 5 to 6 for feeding a pencil to the pencil sharpening mechanism (19) for sharpening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320474422.7U CN219505751U (en) | 2023-03-07 | 2023-03-07 | Clutch structure, pencil feeding mechanism and pencil sharpener |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320474422.7U CN219505751U (en) | 2023-03-07 | 2023-03-07 | Clutch structure, pencil feeding mechanism and pencil sharpener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219505751U true CN219505751U (en) | 2023-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320474422.7U Active CN219505751U (en) | 2023-03-07 | 2023-03-07 | Clutch structure, pencil feeding mechanism and pencil sharpener |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219505751U (en) |
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2023
- 2023-03-07 CN CN202320474422.7U patent/CN219505751U/en active Active
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