Miniature clutch device

Abstract

The utility model discloses a miniature clutch device which comprises a first transmission part, a second transmission part, a clutch connector, a first control panel, a second control panel, a first coil, a second coil and a third coil, the first coil is annularly arranged on the first transmission part, the second coil and the third coil are annularly arranged at the two ends of the second transmission part respectively, and the second transmission part is provided with a clutch sliding block. The first transmission part is driven to be connected with or away from the second transmission part, so that the first coil and the second coil are close to each other or away from each other, the second coil is used for sensing an electromagnetic signal of the first coil close to the second coil, correspondingly forming a voltage signal and inputting the voltage signal into the second control panel, and when the second control panel controls the third coil to be powered on, the third coil is powered off. And acting force is applied to the clutch sliding block to drive the clutch sliding block to slide towards the clutch connector until the clutch sliding block and the clutch connector are connected with each other, so that transmission connection among the first transmission part, the second transmission part and the clutch connector is realized, and the clutch connector can be used in a harsh environment, and the working current is small.

Description

Technical Field

[0001] The utility model relates to the technical field of clutches, in particular to a micro clutch device. Background Art

[0002] Currently, most micro clutches are driven by motors or electromagnets. Motor-driven systems have poor waterproofing properties, are prone to corrosion of metal contacts, and are not suitable for harsh environments. Electromagnet-driven systems have high operating currents and are not suitable for low-current working scenarios. Utility Model Content

[0003] Therefore, in order to solve the above problems, the present invention provides a micro clutch device that can be used in harsh environments and has a small operating current.

[0004] To achieve the above purpose, the technical solutions provided by the present invention are as follows:

[0005] The utility model provides a micro clutch device, comprising a first control unit, a second control unit and a first transmission member, a second transmission member and a clutch connector that cooperate; the first control unit comprises a first control board and a first coil for forming an electromagnetic signal, the output end of the first control board is connected to the input end of the first coil, and the first coil is arranged around the first transmission member; the second control unit comprises a second coil, a third coil and a second control board, the second coil is arranged around one end of the second transmission member facing the first transmission member, the third coil is arranged around one end of the second transmission member facing the clutch connector, and the second control board has a first input end and a signal output end, the output end of the second coil is connected to the first input end, and the signal output end is connected to the input end of the third coil; the second transmission member One end of the movable member facing the clutch connector is provided with a slidable clutch slider, and the clutch slider is magnetic; the first transmission member is driven to engage with or move away from the end of the second transmission member facing away from the clutch connector, so that the first coil and the second coil are moved closer to or away from each other, and the second coil is used to sense the electromagnetic signal of the first coil close to it and correspondingly generate a voltage signal, and input the voltage signal into the second control board; the second control board is used to control the third coil to switch between power on and power off; when the first transmission member engages the second transmission member, the magnetic field generated by the power supply of the third coil exerts a force on the clutch slider, so as to drive the clutch slider to slide toward the clutch connector until they engage with each other, thereby forming a transmission connection arrangement between the first transmission member, the second transmission member and the clutch connector.

[0006] Furthermore, the first transmission member has a clamping portion at one end facing the second transmission member, and the second transmission member has a first clamping groove at one end facing the first transmission member. The clamping portion can be detachably clamped to the first clamping groove to enable the first transmission member to engage with the second transmission member.

[0007] Furthermore, the clutch connector has a second engaging groove at one end facing the second transmission member, and the clutch slider can be detachably engaged with the second engaging groove to enable the second transmission member to engage with the clutch connector.

[0008] Furthermore, the clutch slider is equipped with a hard magnet, and the second transmission member has soft magnetism. When the third coil is powered off, the hard magnet and the second transmission member are magnetically attracted to each other to move the clutch slider away from the clutch connector, thereby forming a reset setting.

[0009] Furthermore, a guide slot is provided at one end of the second transmission member facing the clutch connector, and the clutch slider can be slidably assembled in the guide slot.

[0010] Furthermore, it also includes a displacement sensor for monitoring the displacement distance of the clutch slider. The second control board also has a second input end. The output end of the displacement sensor is connected to the second input end to receive the feedback signal of the displacement sensor, and then determine whether the clutch is normal.

[0011] Furthermore, it also includes a shell, and the second transmission member and the clutch connector are rotatably assembled in the shell; the first transmission member is rotatable and linearly movable.

[0012] Furthermore, a limiter is included, and the limiter is used to limit the rotation angle of the central axis of the second transmission member.

[0013] The technical solution provided by the utility model has the following beneficial effects:

[0014] Through the cooperation of the first control unit, the second control unit, the first transmission member, the second transmission member and the clutch connector, an integrated design of power supply, communication, mechanical clutch and transmission is realized. Not only is the structure simple and the problem of metal contact corrosion can be avoided, it can be used in harsh environments, and the working current is very small, making it suitable for power transmission control of micro machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The above is a schematic structural diagram of the micro clutch device in the embodiment;

[0016] Figure 2 The above is a circuit connection diagram of the first control unit in the embodiment;

[0017] Figure 3 The above is a circuit connection diagram of the second control unit in the embodiment. DETAILED DESCRIPTION

[0018] To further illustrate various embodiments, the present invention is provided with accompanying drawings. These drawings form part of the disclosure of this invention and are primarily used to illustrate the embodiments and, in conjunction with the relevant description in the specification, to explain the operating principles of the embodiments. By referring to these drawings, those skilled in the art will understand other possible implementations and the advantages of this invention. The components in the figures are not drawn to scale, and similar reference numerals are generally used to represent similar components.

[0019] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0020] Reference Figures 1 to 3 As shown, this embodiment provides a micro clutch device for power transmission control of a micro machine.

[0021] like Figure 1 As shown, the micro-clutch device of this embodiment includes a first control unit 4, a second control unit 5, and a first transmission member 1, a second transmission member 2 and a clutch connector 3 that cooperate with each other, and the second transmission member 2 is arranged between the first transmission member 1 and the clutch connector 3, and the second transmission member 2 has soft magnetic properties, such as containing soft magnetic materials.

[0022] like Figure 2 As shown, the first control unit 4 includes a first control board 42 and a first coil 41 for forming an electromagnetic signal, wherein the output end of the first control board 42 is connected to the input end of the first coil 41, wherein the first control board 42 can connect the coupled communication signal from the micro-mechanical input, and power the first coil 41 through the first control board 42, and provide it with an AC signal, while ensuring that the first coil 41 generates an electromagnetic signal, and the first coil 41 is arranged around the first transmission member 1 to ensure that the first coil 41 and the first transmission member 1 form a whole and move synchronously.

[0023] like Figure 3As shown, the second control unit 5 includes a second coil 51, a third coil 52 and a second control board 53. The second coil 51 is arranged around the left end of the second transmission member 2 facing the first transmission member 1, and the third coil 52 is arranged around the right end of the second transmission member 2 facing the clutch connector 3. The second control board 53 has a first input end and a signal output end. The output end of the second coil 51 is connected to the first input end of the second control board 53, and the signal output end of the second control board 53 is connected to the input end of the third coil 52, so that the second coil 51 generates a voltage signal after sensing the electromagnetic signal of the first coil 41. Then, the second control board 53 receives the voltage signal transmitted by the second coil 51, and then demodulates and transforms it to ensure that the second control board 53 is powered on. In cooperation with another coupled communication signal input by the micromachine to the second control board 53, the second control board 53 sends a power supply signal to the third coil 52 to power the third coil 52 and generate a magnetic field.

[0024] The second transmission member 2 has a slidable clutch slider 9 at the right end facing the clutch connector 3, and the clutch slider 9 is magnetic. Specifically, the second transmission member 2 is provided with a guide groove at the right end facing the clutch connector 3, and the clutch slider 9 is slidably assembled in the guide groove.

[0025] When the first transmission member 1 is driven to engage with or move away from the left end of the second transmission member 2, that is, the first coil 41 and the second coil 51 can move closer to or further away from each other, the second coil 51 is used to sense the electromagnetic signal of the first coil 41 close to it and form a voltage signal accordingly, and input the voltage signal into the second control board 53. The voltage signal is triggered to enable the second control board 53 to control the third coil 52 to switch between power on and power off.

[0026] When the first transmission member 1 engages with the second transmission member 2, the magnetic field generated by the energization of the third coil 52 applies a force to the clutch slider 9, driving the clutch slider 9 to slide toward the clutch connector 3 until they engage with each other, thereby forming a transmission connection between the first transmission member 1, the second transmission member 2 and the clutch connector 3, thereby transmitting the driving force from the first transmission member 1 to the clutch connector 3 via the second transmission member 2.

[0027] When the first transmission member 1 moves away from the second transmission member 2 and they are no longer engaged with each other, the third coil 52 is de-energized and there is no magnetic field. The second transmission member 2 and the magnetic clutch slider 9 are magnetically attracted to each other, so that the clutch slider 9 moves away from the clutch connector 3 and then disconnects, thereby disconnecting the transmission connection between the second transmission member 2 and the clutch connector 3.

[0028] like Figure 1As shown, the micro-clutch device of this embodiment also includes a housing 10, a limiter 7 for limiting the rotation angle of the central axis of the second transmission member 2, and a displacement sensor 6 for monitoring the displacement distance of the clutch slider 9. The second transmission member 2 and the clutch connector 3 are respectively rotatably assembled in the housing 10. Of course, the second control unit 5, the limiter 7 and the displacement sensor 6 are all arranged in the housing 10.

[0029] In this embodiment, the first transmission member 1 is configured to be rotatable and linearly movable. The power source of the micromachine drives the first transmission member 1 not only to move forward or backward along its axial direction to approach or move away from the second transmission member 2, but also to rotate circumferentially to drive the second transmission member 2 to rotate synchronously when engaged, thereby driving the clutch connector 3 to rotate.

[0030] like Figure 3 As shown, the second control board 53 also has a second input end, and the output end of the displacement sensor 6 is connected to the second input end of the second control board 53 to receive the feedback signal of the displacement sensor 6, thereby determining whether the micro-clutch device is normally engaged.

[0031] During specific implementation, the clutch slider 9 is assembled with a hard magnet 8 by bonding or screw fastening to ensure that the clutch slider 9 has magnetism, and when the first transmission member 1 is driven by the power source and moves away from the second transmission member 2, the distance between the second coil 51 and the first coil 41 exceeds a certain distance, and electromagnetic induction cannot be effectively formed between each other. Therefore, the second coil 51 can no longer generate a corresponding voltage signal, that is, the second control board 53 cannot power the third coil 52. At this time, the third coil 52 changes from a powered state to a powered-off state, and the third coil 52 no longer generates a magnetic field. Then, the hard magnet 8 and the second transmission member 2 are magnetically attracted to each other to make the clutch slider 9 move away from the clutch connector 3, and then move backward to the initial position, thereby forming a reset setting, that is, the second transmission member 2 and the clutch connector 3 are disconnected from the transmission connection, and at the same time, the first transmission member 1 cannot transmit power to the second transmission member 2 and the clutch connector 3.

[0032] like Figure 1 As shown, the first transmission member 1 has a clamping portion 11 at the right end facing the second transmission member 2, and the second transmission member 2 has a first clamping groove 21 at the left end facing the first transmission member 1, and when the first transmission member 1 and the second transmission member 2 are engaged, the clamping portion 11 can be detachably clamped in the first clamping groove 21 to enable the first transmission member 1 to engage with the second transmission member 2.

[0033] Specifically, the clutch connector 3 has a second engaging groove 31 at the left end facing the second transmission member 2 , and when the second transmission member 2 and the clutch connector 3 are engaged, the clutch slider 9 is detachably engaged with the second engaging groove 31 to enable the second transmission member 2 to engage the clutch connector 3 .

[0034] Through the cooperation of the first control unit 4, the second control unit 5, the first transmission member 1, the second transmission member 2 and the clutch connector 3, an integrated design of power supply, communication, mechanical clutch and transmission is realized. Not only is the structure simple and the problem of metal contact corrosion can be avoided, it can be used in harsh environments, and the operating current is very small, making it suitable for power transmission control of micro machinery.

[0035] Of course, the positions of the clamping portion 11 and the first clamping groove 21 can be interchangeable, and are not limited thereto.

[0036] In addition, the positions of the second engaging groove 31 and the magnetic clutch slider 9 can be interchanged, and are not limited thereto.

[0037] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the form and details of the present invention without departing from the spirit and scope of the present invention as defined by the appended claims, and all of these changes are within the scope of protection of the present invention.

Claims

1. A micro clutch device, characterized in that: It includes a first control unit, a second control unit, and a first transmission member, a second transmission member and a clutch connector that match each other; The first control unit includes a first control board and a first coil for generating an electromagnetic signal, wherein an output end of the first control board is connected to an input end of the first coil, and the first coil is disposed around the first transmission member; The second control unit includes a second coil, a third coil, and a second control board. The second coil is provided at one end of the second transmission member facing the first transmission member, and the third coil is provided at one end of the second transmission member facing the clutch connector. The second control board has a first input end and a signal output end. The output end of the second coil is connected to the first input end, and the signal output end is connected to the input end of the third coil. The second transmission member has a slidable clutch slider at one end facing the clutch connector, and the clutch slider is magnetic; The first transmission member is driven to engage with or move away from the second transmission member at one end facing away from the clutch connector, so that the first coil and the second coil are moved closer to or farther away from each other. The second coil is used to sense the electromagnetic signal of the first coil in proximity to it and generate a voltage signal accordingly, which is then input into the second control board. The second control board is used to control the third coil to switch between power on and power off. When the first transmission member engages with the second transmission member, the magnetic field formed by energizing the third coil applies a force to the clutch slider to drive the clutch slider to slide toward the clutch connector until they engage with each other, thereby forming a transmission connection arrangement among the first transmission member, the second transmission member, and the clutch connector.

2. The micro clutch device according to claim 1, characterized in that: The first transmission member has a clamping portion at one end facing the second transmission member, and the second transmission member has a first clamping groove at one end facing the first transmission member. The clamping portion can be detachably clamped in the first clamping groove to enable the first transmission member to engage with the second transmission member.

3. The micro clutch device according to claim 1, characterized in that: The clutch connector has a second engaging groove at one end facing the second transmission member, and the clutch slider is detachably engaged with the second engaging groove to enable the second transmission member to engage with the clutch connector.

4. The micro clutch device according to any one of claims 1 to 3, characterized in that: The clutch slider is equipped with a hard magnet, and the second transmission member has soft magnetism. When the third coil is powered off, the hard magnet and the second transmission member are magnetically attracted to each other, so that the clutch slider moves away from the clutch connector, thereby forming a reset setting.

5. The micro-clutch device according to claim 4, characterized in that: A guide slot is provided on one end of the second transmission member facing the clutch connector, and the clutch slider is slidably assembled in the guide slot.

6. The micro clutch device according to any one of claims 1 to 3, characterized in that: It also includes a displacement sensor for monitoring the displacement distance of the clutch slider. The second control board also has a second input end. The output end of the displacement sensor is connected to the second input end to receive the feedback signal of the displacement sensor to determine whether the clutch is normal.

7. The micro clutch device according to any one of claims 1 to 3, characterized in that: It also includes a shell, and the second transmission member and the clutch connector are rotatably assembled in the shell; the first transmission member is rotatable and linearly movable.

8. The micro-clutch device according to claim 7, characterized in that: It also includes a limiter, which is used to limit the rotation angle of the central axis of the second transmission member.

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