A pin-type gear clutch mechanism

Abstract

The present invention discloses a latch-type gear clutch mechanism, comprising a power device, a rotating device and a clutch device, wherein the power device comprises a motor and a driving wheel, wherein the output end of the motor is connected to the driving wheel, wherein the driving wheel is provided with an axisymmetric snap groove, and the central axis of the driving wheel is fixedly connected to a limited axis. The beneficial effects of the present invention are as follows: when the clutch drive device pushes the snap pin to snap the driven gear into engagement with the snap groove in the driving wheel, the driven gear and the driving wheel are in a joint state, and the driven gear and the driving wheel rotate synchronously; when the clutch drive device pushes the snap pin to return and exit, the driven gear and the driving wheel are in a clutch state, and the driven gear stops rotating; the rotating device is suitable for a plastic-made rotating device, and the driving wheel drives the driven gear, and there is no need to move the position of the driven gear, and there is no need to press the driving wheel and the driven gear, thereby avoiding the problem of misalignment, collision and wear of the gears.

Description

Technical Field

[0001] The invention belongs to the technical field of power clutch, and in particular relates to a latch-type gear clutch mechanism. Background Art

[0002] With the development of the Internet of Things and intelligent technology, various automatic devices have been promoted from industrial applications to home and personal applications, making the application of motors and gears more and more extensive. Among the applications of gears, there is a gear clutch mechanism that is also used in many occasions. The existing clutch mainly drives the driven wheel to rotate by the friction between the driving wheel and the driven wheel, and some are clutched by the process of gear engagement and disengagement. The friction type is suitable for metal gears. The gear separation method often causes greater wear on the gears and affects their service life. It is not suitable for the clutch of plastic gears, which is easy to cause excessive wear during the clutch process and reduce the service life. Summary of the invention

[0003] The object of the present invention is to provide a latch-type gear clutch mechanism to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a latch-type gear clutch mechanism, comprising a power device, a rotating device and a clutch device, wherein the power device comprises a motor and a driving wheel, wherein the output end of the motor is connected to the driving wheel, wherein the driving wheel is provided with an axially symmetrical buckle groove, and the central axis of the driving wheel is fixedly connected to a limiting axis;

[0005] The rotating device comprises a driven gear, a symmetrical buckle hole is arranged on the driven gear, the buckle hole and the projection of the buckle groove coincide with each other, a limit shaft hole is arranged on the central axis of the driven gear, and the limit shaft hole is matched and buckled with the limit shaft;

[0006] The clutch device comprises a connecting member and a bayonet, one side of the connecting member is fixed with a bayonet symmetrical to the connecting axis, the bayonet penetrates and is bayoneted in a buckle hole and a buckle groove, and one side of the clutch device is provided with a clutch driving device.

[0007] Preferably, the clutch drive device includes a rotating shaft and a sleeve, the rotating shaft movably passes through the interior of the sleeve, one end of the rotating shaft is threadedly connected to a first metal block, the first metal block is fixedly connected to one side of the axis of the connecting piece, the other end of the rotating shaft is threadedly connected to a second metal block, one end of the sleeve close to the first metal block is wound with a first coil, and one end of the sleeve close to the second metal block is wound with a second coil.

[0008] Preferably, the rotating shaft and the sleeve are both made of plastic material, and the length of the rotating shaft is greater than the length of the sleeve.

[0009] Preferably, the buckle groove is arranged in an arc shape, and the arc length of the buckle groove is one quarter of the circumference of a circle with the same curvature.

[0010] Preferably, the length of the bayonet pin is greater than the sum of the widths of the driven gear and the driving wheel, and the front end of the bayonet pin is chamfered.

[0011] Preferably, the connecting piece and the bayonet pin are both made of metal, and the diameter of the bayonet pin is smaller than the diameter of the buckle hole.

[0012] Preferably, the first coil and the second coil are both wound with multiple turns, and the first coil and the second coil are wound on the sleeve in opposite directions.

[0013] Preferably, the axial displacement stroke of the rotating shaft is less than the length of the bayonet and greater than the width of the driving wheel, and the inner wall of the sleeve and the outer surface of the rotating shaft are both smooth surfaces.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) When the clutch driving device pushes the bayonet to engage the driven gear with the buckle groove in the driving wheel, the driven gear and the driving wheel are in a joint state, and the driven gear and the driving wheel rotate synchronously. When the clutch driving device pushes the bayonet to return, the driven gear and the driving wheel are in a clutched state, and the driven gear stops rotating. It is suitable for a rotating device made of plastic, so that the driving wheel drives the driven gear without moving the position of the driven gear, and there is no need to press the driving wheel and the driven gear, thereby avoiding the problem of misalignment, collision and wear of the gears.

[0016] (2) The symmetrical buckle grooves on the active wheel are arc-shaped, and the length of the buckle groove arc is one-fourth of the circumference of the circle with the same curvature. The buckle groove of one-fourth of the circumference of the circle with the same curvature ensures the overall strength of the active wheel, and at the same time allows the bayonet to have sufficient time to engage when the active wheel rotates, ensuring that the bayonet is smoothly engaged, conveniently and efficiently engaged.

[0017] (3) One side of the driving wheel is fixedly connected to the limiting shaft, and the limiting shaft is engaged with the limiting shaft hole of the driven gear on one side, so as to ensure the coaxial rotation of the driving wheel and the driven gear, and the rotation is more stable. The axial displacement stroke of the shaft is less than the length of the bayonet pin and greater than the width of the driving wheel, so as to ensure that when the bayonet pin is withdrawn, one end of the bayonet pin is still stuck in the buckle hole, so as to avoid the separation of the bayonet pin and the driven gear, and facilitate the next insertion and engagement, and the device has high stability in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the combined installation structure of the present invention;

[0020] Figure 3 It is a schematic diagram of the explosion connection structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the active rotating wheel of the present invention.

[0022] In the figure: 1. power device; 11. motor; 12. driving wheel; 13. snap groove; 14. limit shaft; 2. rotating device; 21. driven gear; 22. snap hole; 23. limit shaft hole; 3. clutch device; 31. connecting piece; 32. bayonet pin; 4. clutch drive device; 41. rotating shaft; 42. first metal block; 43. second metal block; 44. sleeve; 45. first coil; 46. second coil. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 4 The present invention provides a latch-type gear clutch mechanism, comprising a power device 1, a rotating device 2 and a clutch device 3. The power device 1 comprises a motor 11 and a driving wheel 12. The output end of the motor 11 is connected to the driving wheel 12. The driving wheel 12 is provided with an axisymmetric snap groove 13. The central axis of the driving wheel 12 is fixedly connected to a limiting axis 14.

[0025] The rotating device 2 includes a driven gear 21, on which a symmetrical buckle hole 22 is arranged, the buckle hole 22 coincides with the projection of the buckle groove 13, and a limit shaft hole 23 is arranged on the central axis of the driven gear 21, and the limit shaft hole 23 matches and is buckled with the limit shaft 14;

[0026] The clutch device 3 includes a connecting member 31 and a bayonet 32 ​​. One side of the connecting member 31 is fixedly connected to the bayonet 32 ​​symmetrically. The bayonet 32 ​​penetrates and is bayoneted in the buckle hole 22 and the buckle groove 13 . A clutch driving device 4 is arranged on one side of the clutch device 3 .

[0027] In this embodiment, further, the clutch drive device 4 includes a rotating shaft 41 and a sleeve 44. The rotating shaft 41 is movable and runs through the sleeve 44. One end of the rotating shaft 41 is threadedly connected to a first metal block 42. The first metal block 42 is fixedly connected to one side of the axis of the connecting member 31. The other end of the rotating shaft 41 is threadedly connected to a second metal block 43. One end of the sleeve 44 close to the first metal block 42 is wound with a first coil 45, and one end of the sleeve 44 close to the second metal block 43 is wound with a second coil 46. The clutch drive device 4 provides a reciprocating driving force, thereby pushing the reciprocating engagement of the connecting member 31 and the latch 32, thereby performing electromagnetic control clutch of the device, and the control is convenient.

[0028] In this embodiment, further, the rotating shaft 41 and the sleeve 44 are both made of plastic material, and the length of the rotating shaft 41 is greater than the length of the sleeve 44. The rotating shaft 41 and the sleeve 44 made of plastic material avoid impact during electromagnetic pushing, and the longer rotating shaft 41 can move axially in the sleeve 44.

[0029] In the present embodiment, further, the snap groove 13 is arc-shaped, and the arc length of the snap groove 13 is one-fourth of the circumference of the circle with the same curvature. The arc-shaped snap groove 13 provides a longer snap-in space, which is convenient for the timely snap-in of the snap pin 32. The snap groove 13 with one-fourth of the circumference of the circle with the same curvature ensures the overall strength of the active wheel 12, and at the same time allows the snap pin 32 to have sufficient snap-in time when the active wheel 12 rotates, ensuring the smooth snap-in of the snap pin 32.

[0030] In the present embodiment, further, the length of the bayonet 32 ​​is set to be greater than the sum of the widths of the driven gear 21 and the driving wheel 12, and the front end of the bayonet 32 ​​is chamfered; the longer bayonet 32 ​​can ensure the smooth connection between the driven gear 21 and the driving wheel 12, and the chamfered front end of the bayonet 32 ​​can facilitate the edge of the buckle groove 13 to be snapped into.

[0031] In this embodiment, further, the connecting piece 31 and the bayonet pin 32 are both made of metal, and the diameter of the bayonet pin 32 is smaller than the diameter of the buckle hole 22; the connecting piece 31 and the bayonet pin 32 made of metal have better mechanical strength and extend the service life while performing stable clamping, and the smaller diameter bayonet pin 32 minimizes friction when plugging and unplugging with the buckle hole 22.

[0032] In the present embodiment, further, the first coil 45 and the second coil 46 are both wound with multiple turns, and the first coil 45 and the second coil 46 are wound in opposite directions on the sleeve 44; when a changing current is passed through the first coil 45 and the second coil 46 with different winding directions, a corresponding magnetic field is formed, and under the action of the changing magnetic flux lines, an induced current appears inside the first metal block 42 and the second metal block 43, and this current generates a magnetic field again. When the first coil 45 and the second coil 46 are energized, the first metal block 42 and the second metal block 43 near the end repel each other with the same poles, and then cooperate with the first metal block 42 and the second metal block 43 repelling each other at both ends to form a plug-in and pull-out action, thereby realizing the plug-in and pull-out of the latch 32 for clutch control.

[0033] In the present embodiment, further, the axial displacement stroke of the rotating shaft 41 is less than the length of the bayonet 32 ​​and greater than the width of the driving wheel 12, and the inner wall of the sleeve 44 and the outer surface of the rotating shaft 41 are both smooth surfaces. The movement of the rotating shaft 41 is limited by the displacement stroke being less than the length of the bayonet 32 ​​and greater than the width of the driving wheel 12, thereby limiting the movement stroke of the bayonet 32. When the bayonet 32 ​​withdraws from the driving wheel 12, the front end of the bayonet 32 ​​is stuck in the driven gear 21, thereby preventing the bayonet 32 ​​from being separated from the driven gear 21, and facilitating the next insertion and connection.

[0034] Working principle and use process of the present invention: when the device is used, the sleeve 44 in the clutch drive device 4 is fixedly installed with the whole through the fixing piece to ensure that the position of the sleeve 44 is fixed during the movement, and the motor 11 and the first coil 45 and the second coil 46 are respectively connected to the external power supply, and the output end of one end of the motor 11 is fixedly connected with the driving wheel 12, and the axis of one side of the driving wheel 12 is fixedly connected with the limiting shaft 14, and the limiting shaft 14 is clamped with the inside of the limiting shaft hole 23 set on the driven gear 21 on one side to ensure the coaxial rotation of the driving wheel 12 and the driven gear 21, and the rotation is more stable. Two symmetrical arc-shaped snap grooves 13 are set on the driving wheel 12, and the arc-shaped snap grooves 13 provide a longer snap-in space, which is convenient for the timely snap-in of the bayonet 32, The buckle groove 13 with the same curvature circumference as one-third ensures the overall strength of the active wheel 12, and at the same time allows the bayonet 32 ​​to have sufficient time to be engaged when the active wheel 12 rotates, ensuring the smooth engagement of the bayonet 32. A connecting piece 31 is provided on one side of the driven gear 21, and the connecting piece 31 is engaged with the buckle hole 22 in the driven gear 21 through the bayonet 32. A first coil 45 and a second coil 46 in different directions are wound on the sleeve 44. When the action is required, the first coil 45 is energized, and a variable current is passed through. The variable current includes continuously changing direct current, intermittently changing direct current and changing alternating current. At this time, the second coil 46 is not energized, and the changing current inside the first coil 45 generates a magnetic field. The changing magnetic lines of induction inside the first metal block 42 and the second metal block 43 act as Under the action, an induced current appears inside the first metal block 42 and the second metal block 43. At the same time, the current inside the first metal block 42 and the second metal block 43 generates a magnetic field that repels the first coil 45 again. The second metal block 43 moves away from the first coil 45. The repulsive force between the first coil 45 and the second metal block 43 is much smaller than the repulsive force between the first coil 45 and the first metal block 42, pushing the first metal block 42 to move laterally away from the first coil 45, and then pushing the latch 32 on the connecting member 31 to engage the driven gear 21 with the latch groove 13 in the driving wheel 12. At this time, the driven gear 21 and the driving wheel 12 are in a state of engagement, and the driven gear 21 and the driving wheel 12 rotate synchronously. When the separation action is required, the second coil 46 is energized, and the first coil 45 is not energized. The changing current passed into the second coil 46 generates a magnetic field, which generates the same repulsive force as the above-mentioned combined action. Since the first metal block 42 is away from the second coil 46, the repulsive force generated by the first metal block 42 is much smaller than the repulsive force of the second metal block 43, thereby pushing the second metal block 43 to move laterally away from the second coil 46. The second metal block 43 drives the latch 32 on the connecting member 31 to return and exit. At this time, the driven gear 21 is in a disengaged state from the driving wheel 12, and the driven gear 21 stops rotating, so that the driving wheel 12 drives the driven gear 21, and there is no need to move the position of the driven gear 21, and there is no need to press the driving wheel 12 and the driven gear 21. It is suitable for the rotating device 2 made of plastic, thereby avoiding the problem of misalignment, collision and wear of the gears.The power device 1 and the rotating device 2 for clutch control by horizontal plugging and unplugging are simple and practical in structure, and the overall structure of the device is stable and has good use effect.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A latch-type gear clutch mechanism, comprising a power device (1), a rotating device (2) and a clutch device (3), characterized in that: The power device (1) comprises a motor (11) and a driving wheel (12); the output end of the motor (11) is connected to the driving wheel (12); an axisymmetric snap groove (13) is provided on the driving wheel (12); and the central axis of the driving wheel (12) is fixedly connected to a limiting axis (14); The rotating device (2) comprises a driven gear (21), the driven gear (21) is provided with symmetrical snap holes (22), the snap holes (22) coincide with the projection of the snap groove (13), a limiting shaft hole (23) is provided on the central axis of the driven gear (21), and the limiting shaft hole (23) is matched and snapped with the limiting shaft (14); The clutch device (3) comprises a connecting member (31) and a bayonet (32); one side of the connecting member (31) is fixedly connected to an axisymmetric bayonet (32); the bayonet (32) penetrates and is bayoneted in a bayonet hole (22) and a bayonet groove (13); and a clutch drive device (4) is provided on one side of the clutch device (3); The clutch drive device (4) comprises a rotating shaft (41) and a sleeve (44), wherein the rotating shaft (41) is movably inserted into the sleeve (44), one end of the rotating shaft (41) is threadedly connected to a first metal block (42), the first metal block (42) is fixedly connected to one side of the axis of the connecting member (31), the other end of the rotating shaft (41) is threadedly connected to a second metal block (43), one end of the sleeve (44) close to the first metal block (42) is wound with a first coil (45), and one end of the sleeve (44) close to the second metal block (43) is wound with a second coil (46).

2. A latch-type gear clutch mechanism according to claim 1, characterized in that: The rotating shaft (41) and the sleeve (44) are both made of plastic material, and the length of the rotating shaft (41) is greater than the length of the sleeve (44).

3. The latch-type gear clutch mechanism according to claim 1, characterized in that: The buckle groove (13) is arranged in an arc shape, and the arc length of the buckle groove (13) is one quarter of the circumference of a circle with the same curvature.

4. The latch-type gear clutch mechanism according to claim 1, characterized in that: The length of the latch pin (32) is greater than the sum of the widths of the driven gear (21) and the driving rotating wheel (12), and the latching front end of the latch pin (32) is chamfered.

5. The latch-type gear clutch mechanism according to claim 1, characterized in that: The connecting piece (31) and the bayonet pin (32) are both made of metal, and the diameter of the bayonet pin (32) is smaller than the diameter of the buckle hole (22).

6. The latch-type gear clutch mechanism according to claim 1, characterized in that: The first coil (45) and the second coil (46) are both wound with multiple turns, and the first coil (45) and the second coil (46) are wound in opposite directions on the sleeve (44).

7. The latch-type gear clutch mechanism according to claim 1, characterized in that: The axial displacement stroke of the rotating shaft (41) is less than the length of the bayonet (32) and greater than the width of the active rotating wheel (12), and the inner wall of the sleeve (44) and the outer surface of the rotating shaft (41) are both smooth surfaces.

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