Bidirectional automatic clutch mechanism

Abstract

The invention relates to the technical field of intelligent molded case circuit breakers, in particular to a bidirectional automatic clutch mechanism which comprises a driving wheel, a driven wheel, a main shaft, a connecting sleeve, a plurality of locking sliding blocks and a return elastic piece. The driving wheel is fixedly connected with the connecting sleeve, the driven wheel is rotatably connected with the main shaft, the driven wheel partially extends into the connecting sleeve and is rotatably connected with the connecting sleeve, a cylindrical groove is formed in the end, extending into the connecting sleeve, of the driven wheel, and a plurality of protruding blocks and a plurality of clamping notches which are equally divided along the circumference of the cylindrical groove are evenly arranged on the inner wall of the cylindrical groove. A plurality of locking sliding block grooves equally divided along the circumference of the connecting sleeve are evenly formed in the end, overlapped with the driven wheel, in the connecting sleeve, a plurality of sliding block groove center through holes corresponding to the locking sliding block grooves in a one-to-one mode are formed in the end, away from the driven wheel, in the connecting sleeve, and the locking sliding block grooves communicate with the sliding block groove center through holes. A locking sliding block is arranged in each locking sliding block groove, and the other end of each elastic piece penetrates through the corresponding sliding block groove center through hole and the corresponding locking sliding block groove to be connected with the corresponding locking sliding block in a clamped mode in a one-to-one correspondence mode. The mechanism can realize automatic bidirectional clutch, and is compact in structure and small in occupied space.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent molded case circuit breakers, and in particular to a bidirectional automatic clutch mechanism. Background Art

[0002] The intelligent molded case circuit breaker combines advanced electronic technology with traditional circuit breaker design and has intelligent monitoring and control functions. Its built-in intelligent module can monitor parameters such as current, voltage and power in real time, and can communicate and exchange data with other devices through the network. When an abnormal situation occurs in the circuit, the intelligent molded case circuit breaker can respond quickly and automatically cut off the power supply to prevent fire and electrical damage caused by circuit overload, short circuit and other faults, thereby protecting personal safety and property safety. With the development of intelligent equipment automation, intelligent molded case circuit breakers are required to be equipped with an operating mechanism that can automatically open and close.

[0003] The operating mechanisms of existing intelligent molded case circuit breakers are all designed with clutch mechanisms, which mainly adopt manual clutch and automatic clutch. Among them, manual clutch can realize bidirectional operation, while automatic clutch can generally only perform unidirectional operation. In addition, the existing clutch mechanisms of this type are often complex in structure and occupy a large space. This also leads to the intelligent molded case circuit breaker occupying a large space, which is not conducive to the application and development of miniaturized products. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the clutch mechanism of the current intelligent molded case circuit breaker described in the above background technology cannot realize automatic two-way operation and occupies a large space. A two-way automatic clutch mechanism is proposed herein, which can realize two-way operation and has a compact structure and occupies a small space.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a two-way automatic clutch mechanism, the two-way automatic clutch mechanism includes a driving wheel, a driven wheel, a main shaft, a connecting sleeve, a plurality of locking sliders and a return spring sheet,

[0006] The restoring spring piece includes a central hole disc and a plurality of spring pieces, one end of each of the plurality of spring pieces is fixedly connected to the central hole disc,

[0007] The connecting sleeve is sleeved on the outside of the main shaft, the driving wheel is sleeved on the outside of the connecting sleeve, the driving wheel is fixedly connected to the connecting sleeve, the main shaft passes through the middle hole of the middle hole disc, the driven wheel is provided with a driven wheel central through hole, the main shaft passes through the driven wheel central through hole and is rotatably connected to the driven wheel,

[0008] The driven wheel partially extends into the connecting sleeve and is rotatably connected to the connecting sleeve. One end of the driven wheel extending into the connecting sleeve is provided with a cylindrical groove. The inner wall of the cylindrical groove is evenly provided with a plurality of protrusions and a plurality of notches equally divided along the circumference of the cylindrical groove. The protrusions and notches are alternately arranged in pairs.

[0009] A plurality of locking slider grooves are evenly arranged at one end of the connecting sleeve that overlaps with the driven wheel and are equally divided along the circumference of the connecting sleeve; a plurality of slider groove center through holes corresponding to the locking slider grooves are arranged at one end of the connecting sleeve that is away from the driven wheel; the locking slider grooves are connected to the slider groove center through holes; a locking slider is provided in each of the plurality of locking slider grooves; the other ends of the plurality of spring sheets respectively pass through the corresponding slider groove center through holes and the locking slider grooves and are clamped with the locking sliders in a one-to-one correspondence.

[0010] In the above technical solution, one end of the spring piece is clamped with the locking slider, and the spring piece can apply pressure to the locking slider in the direction of the main shaft, so that the locking slider fits with the inner wall of the locking slider groove close to the main shaft. At this time, there is no connection between the driven wheel and the driving wheel, and the two can rotate freely; when the driving wheel rotates, the locking slider located in the locking slider groove also rotates accordingly, generating centrifugal force. Under the action of centrifugal force, the locking slider overcomes the pressure of the spring piece and slides in the locking slider groove away from the main shaft until it enters the notch and abuts against the protrusion. At this time, a connection is generated between the driven wheel and the driving wheel, and the two rotate in the same direction; when the driving wheel is stationary, the spring piece pushes the locking slider to leave the notch, thereby realizing automatic clutch between the driving wheel and the driven wheel.

[0011] Preferably, at least two symmetrically arranged locking slider grooves are provided at one end of the connecting sleeve overlapping with the driven wheel, and at least two slider groove center through holes corresponding to the locking slider grooves are provided at one end of the connecting sleeve away from the driven wheel.

[0012] Preferably, at least two symmetrically arranged protrusions and at least two symmetrically arranged notches are provided on the inner wall of the cylindrical groove.

[0013] In the above scheme, the symmetrical arrangement makes the centrifugation unaffected by the direction of rotation.

[0014] Preferably, the width of the notch is greater than the width of the protrusion.

[0015] In the above scheme, the width refers to the length of the common edge between the notch or the protrusion and the inner wall of the cylindrical groove. By designing the width of the notch to be larger than the width of the protrusion, space is given to the driving wheel to accelerate, thereby improving the reliability of automatic clutch.

[0016] Preferably, the projection is at least partially located in the centrifugal direction of the locking slider.

[0017] In the above solution, it is ensured that the locking slider can enter the notch and abut against the protrusion under the action of centrifugal force, so that the clutch mechanism can work smoothly.

[0018] Preferably, an I-shaped slot is provided at one end of the spring piece away from the center hole disc, and a cross slot is provided on one side of the locking slider. The spring piece is inserted into the cross slot of the locking slider through the I-shaped slot for clamping and fixing.

[0019] In the above solution, the locking slider is fixed in the axial direction by the clamping arrangement of the I-shaped clamping slot and the cross clamping slot, thereby preventing the locking slider from being thrown out.

[0020] Preferably, the depth of the cross slot is greater than the thickness of the spring sheet.

[0021] In the above scheme, the setting enables the I-shaped slot end of the spring piece to be protected in the locking slider. When the locking slider moves outward into the card gap under the action of centrifugal force, the locking slider slightly collides with the inner wall of the cylindrical groove, and the spring piece will not contact the inner wall of the cylindrical groove, thereby playing a certain buffering role, making it difficult for the spring piece to change the pressure of the spring piece on the locking slider due to multiple frequent clutches, thereby making the device run stably.

[0022] Preferably, when the driving wheel reaches a certain rotation speed, the locking slider at least partially extends into the notch and abuts against the protrusion, and when the driving wheel does not reach a certain rotation speed, the locking slider does not contact the protrusion.

[0023] In the above scheme, the centrifugal movement and resetting of the locking slider can be achieved by combining the actual rotation speed of the driving wheel with the elastic force of the shrapnel, thereby completing the two-way automatic clutch operation.

[0024] Preferably, a hollow portion is provided in the connecting sleeve.

[0025] In the above scheme, the hollow design reduces the weight of the device, which is beneficial to the lightweight design of the automatic two-way clutch mechanism and reduces the load of the mechanism.

[0026] Preferably, the center-hole disc is located on an end of the main shaft away from the driven wheel.

[0027] In the above scheme, the center hole disc and the driven wheel are respectively arranged on both sides of the driving wheel, which is convenient for the installation and maintenance of the two-way automatic clutch mechanism.

[0028] Preferably, the angle between two adjacent protrusions is equal to the angle between two adjacent locking sliders.

[0029] In the above scheme, each locking slider is advantageously engaged with the corresponding protrusion, so that the spring piece is evenly stressed and the service life of the spring piece is prolonged.

[0030] The beneficial effects of the present invention are:

[0031] 1. The present invention adopts a centrifugal locking structure with central symmetry to ensure that the locking slider is subjected to uniform force, thereby realizing the bidirectional automatic clutch function of the clutch mechanism, and no longer requiring manual intervention for reset.

[0032] 2. The present invention adopts a built-in return spring to realize the automatic resetting of the locking slider, reducing the internal space of the clutch mechanism, thereby effectively reducing the floor space of the intelligent molded case circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural cross-sectional view of the bidirectional automatic clutch mechanism of the present invention;

[0034] Figure 2 An exploded view of the bidirectional automatic clutch mechanism of the present invention;

[0035] Figure 3 It is a top view of the driving wheel and the connecting sleeve of the present invention;

[0036] Figure 4 It is the AA cross-sectional view of the driving wheel and the connecting sleeve of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the driven wheel of the present invention;

[0038] Figure 6 A top view of the driven wheel of the present invention;

[0039] Figure 7 BB is a cross-sectional view of the driven wheel of the present invention;

[0040] Figure 8 This is a schematic diagram of the structure of the recovery spring of the present invention;

[0041] Fig. 9 It is a schematic structural diagram of the locking slide block of the present invention.

[0042] Illustrations: 1. Driving wheel, 2. Driven wheel, 3. Main shaft, 4. Connecting sleeve, 5. Locking slider, 6. Return spring, 21. Center through hole of driven wheel, 22. Cylindrical groove, 23. Bump, 24. Notch, 41. Locking slider groove, 42. Center through hole of slider groove, 43. Hollow part, 61. Center hole disc, 62. Spring. DETAILED DESCRIPTION

[0043] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0044] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0045] The present invention is now further described in conjunction with specific examples. The following examples are only for explaining the present invention, but do not constitute a limitation of the present invention. In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0046] like Figure 1 and Figure 2 As shown, a two-way automatic clutch mechanism is composed of a driving wheel 1, a driven wheel 2, a main shaft 3, a connecting sleeve 4, two locking sliders 5 and a return spring 6, wherein the structure of the return spring is as shown in FIG. Figure 8 As shown, the restoring spring piece is composed of a center hole disc 61 and two spring pieces 62. One end of the spring piece is fixedly connected to the circumferential side of the center hole disc. The two spring pieces are symmetrically arranged on both sides of the center hole disc. In this embodiment, an integrated restoring spring piece structure is adopted to facilitate the subsequent installation of the restoring spring piece.

[0047] The structure of the driving wheel and the connecting sleeve is as follows Figure 3 and Figure 4 As shown, the driving wheel is cylindrical with openings at both ends; the connecting sleeve consists of two parts, one part is a connecting component, which is cylindrical with openings at both ends and is used to connect the driving wheel, and the other part is a functional component, which is cylindrical with hollowing and grooves designed from the circumference to the center axis to realize the automatic clutch function.

[0048] In this embodiment, the driven wheel partially extends into the connecting sleeve and is rotatably connected to the connecting sleeve. In order to facilitate assembly, the above-mentioned connecting sleeve functional component is divided into two sections of cylinders with different diameters. When the driven wheel extends into the connecting sleeve, it can naturally resist the top of the cylinder with a larger diameter to perform a limited installation.

[0049] The structure of the driven wheel is as follows Figure 5 , Figure 6 and Figure 7 As shown, the driven wheel is provided with a driven wheel center through hole 21 at the axis center, the main shaft passes through the driven wheel center through hole and is rotatably connected to the driven wheel, and a cylindrical groove 22 is provided at one end of the driven wheel extending into the connecting sleeve, and two protrusions 23 and two notches 24 are symmetrically provided on the inner wall of the cylindrical groove, and the protrusions and the notches are alternately arranged.

[0050] Two locking slider grooves 41 are symmetrically provided at one end of the connecting sleeve overlapping with the driven wheel, that is, two symmetrically arranged locking slider grooves are dug on the connecting sleeve cylinder with a smaller diameter, and two slider groove center through holes 42 are provided at the end of the connecting sleeve away from the driven wheel, that is, two symmetrically arranged slider groove center through holes are dug on the connecting sleeve cylinder with a larger diameter, the slider groove center through holes correspond to and are connected with the locking slider grooves one by one, and a locking slider is respectively provided in the two locking slider grooves, and two spring pieces respectively pass through the corresponding slider groove center through holes and the locking slider grooves and are clamped with the locking sliders one by one.

[0051] In this embodiment, the connecting sleeve is sleeved on the outside of the main shaft, the driving wheel is sleeved on the outside of the connecting sleeve, the connecting sleeve is fixedly connected to the main shaft and the driving wheel, the main shaft passes through the middle hole of the middle hole disc and is fixedly connected to the middle hole disc, and the main shaft, the connecting sleeve, the return spring and the driving wheel rotate in the same direction.

[0052] In one embodiment, the main shaft and the connecting sleeve are rotatably connected. In this case, the driving wheel can be replaced by various components such as gears or pulleys.

[0053] It should be noted that the number of the above-mentioned locking slider, spring sheet, protrusion, locking slider groove and slider groove center through hole is not limited to two, and three, four, five, etc., and so on can also be set, to meet the locking slider groove is located at a position equally divided by the circumference of the connecting sleeve, so that the locking slider groove is symmetrically arranged relative to the main shaft axis, and the number and position of the corresponding slider groove center through hole, locking slider, spring sheet and protrusion correspond one-to-one with the locking slider groove.

[0054] In this embodiment, the width of the notch is greater than the width of the protrusion. In the present invention, the width of the protrusion refers to the length of the common side of the protrusion and the cylindrical groove, and the width of the notch refers to the length of the common side of the notch and the cylindrical groove, thereby providing space for the driving wheel to accelerate, making the automatic clutch more reliable.

[0055] like Figure 8 and Fig. 9As shown, in this embodiment, an I-shaped slot is provided at one end of the spring piece away from the center hole disc, and a cross slot is provided on one side of the locking slider. The spring piece is inserted into the cross slot of the locking slider through the I-shaped slot for clamping and fixing, so that the locking slider is limited in the locking slider slot to prevent it from moving in the axial direction, and the locking slider is limited in the cylindrical groove opposite to the protrusion or the notch. When subjected to centrifugal force, the locking slider can slide outward along the locking slider slot and smoothly enter the notch.

[0056] In this embodiment, a hollow portion 43 is provided in the connecting sleeve, and the hollow portion is preferably a symmetrical structure. The hollow setting can greatly reduce the weight of the mechanism and reduce the load.

[0057] In this embodiment, the driving wheel, the driven wheel, the return spring and the connecting sleeve all take the main shaft as the axis, and the driving wheel is fixedly connected to the connecting sleeve.

[0058] Working principle and process of the present invention:

[0059] When the two-way automatic clutch mechanism is stationary, the spring sheet applies pressure to the locking slider, so that the locking slider is closely attached to the inner wall of the locking slider groove close to the main shaft. At this time, the locking slider is not in contact with the protrusion;

[0060] When the two-way automatic clutch mechanism is running, the connecting sleeve rotates with the driving wheel, and the locking slider also rotates accordingly. When the centrifugal force is greater than the pressure exerted by the spring on the locking slider, the locking slider gradually moves away from the main shaft in the locking slider groove. When the locking slider enters the notch, as the driving wheel rotates, the locking slider abuts against the convex block, and the locking slider drives the driven wheel to rotate. At this time, the driving wheel and the driven wheel rotate together in the same direction;

[0061] When the two-way automatic clutch mechanism stops, the centrifugal force is less than the pressure exerted by the spring on the locking slider. The spring pushes the locking slider in the locking slider groove to gradually move closer to the main shaft. The locking slider and the protrusion no longer resist each other, and the driving wheel and the driven wheel no longer rotate together, thereby realizing the two-way automatic operation of the clutch mechanism.

[0062] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0063] The above is a detailed introduction to a bidirectional automatic clutch mechanism provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A two-way automatic clutch mechanism, characterized in that: The bidirectional automatic clutch mechanism comprises a driving wheel (1), a driven wheel (2), a main shaft (3), a connecting sleeve (4), a plurality of locking slide blocks (5) and a return spring sheet (6). The restoring spring sheet comprises a central hole disc (61) and a plurality of spring sheets (62), one end of each of the plurality of spring sheets being fixedly connected to the central hole disc. The connecting sleeve is sleeved on the outside of the main shaft, the driving wheel is sleeved on the outside of the connecting sleeve, the driving wheel is fixedly connected to the connecting sleeve, the main shaft passes through the middle hole of the middle hole disc, the driven wheel is provided with a driven wheel central through hole (21), the main shaft passes through the driven wheel central through hole and is rotatably connected to the driven wheel, The driven wheel partially extends into the connecting sleeve and is rotatably connected to the connecting sleeve. One end of the driven wheel extending into the connecting sleeve is provided with a cylindrical groove (22). The inner wall of the cylindrical groove is evenly provided with a plurality of protrusions (23) and a plurality of notches (24) equally divided along the circumference of the cylindrical groove. The protrusions and notches are alternately arranged in pairs. The end of the connecting sleeve overlapping with the driven wheel is evenly provided with a plurality of locking slider grooves (41) equally divided along the circumference of the connecting sleeve, and the end of the connecting sleeve away from the driven wheel is provided with a plurality of slider groove central through holes (42) corresponding to the locking slider grooves one by one, the locking slider grooves are connected with the slider groove central through holes, a locking slider is respectively provided in the plurality of locking slider grooves, and the other ends of the plurality of spring sheets respectively pass through the corresponding slider groove central through holes and the locking slider grooves and are clamped with the locking sliders one by one.

2. The two-way automatic clutch mechanism according to claim 1, characterized in that: At least two symmetrically arranged locking slider grooves are provided at one end of the connecting sleeve overlapping with the driven wheel, and at least two slider groove center through holes corresponding to the locking slider grooves are provided at one end of the connecting sleeve away from the driven wheel.

3. The two-way automatic clutch mechanism according to claim 2, characterized in that: At least two symmetrically arranged protrusions and at least two symmetrically arranged notches are arranged on the inner wall of the cylindrical groove.

4. The two-way automatic clutch mechanism according to claim 1, characterized in that: The width of the notch is greater than the width of the protrusion.

5. The two-way automatic clutch mechanism according to claim 1, characterized in that: The projection is at least partially located in the centrifugal direction of the locking slide.

6. The two-way automatic clutch mechanism according to claim 1, characterized in that: An I-shaped slot is arranged at one end of the spring piece away from the center hole disc, and a cross slot is arranged at one side of the locking slide block. The spring piece is inserted into the cross slot of the locking slide block through the I-shaped slot for clamping and fixing.

7. The two-way automatic clutch mechanism according to claim 1, characterized in that: When the spindle reaches a certain speed, the locking slider at least partially extends into the notch and abuts against the convex block. When the spindle does not reach a certain speed, the locking slider does not contact the convex block.

8. The two-way automatic clutch mechanism according to claim 1, characterized in that: A hollow portion (43) is provided in the connecting sleeve.

9. The two-way automatic clutch mechanism according to claim 1, characterized in that: The center hole disc is located on one end of the main shaft away from the driven wheel.

10. The two-way automatic clutch mechanism according to claim 1, characterized in that: The angle between two adjacent protrusions is equal to the angle between two adjacent locking slide blocks.

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