Operating mechanism and switch device

Abstract

The utility model provides a kind of operating mechanism and switch device, including shell;Cam, pivotally installed to shell, the edge of the cam includes first section, second section and third section being adjacently arranged along first rotation direction, the first section and third section are convex section, and the second section is concave section;Driving member, drive the cam movement along first rotation direction;Transmission member, with the protruding portion configured to abut against the third section.The operating mechanism further includes damping member, fixedly installed to shell, the position of the damping member is set to be separated from the cam into contact during the movement of the cam along first rotation direction, so that the damping member is contacted with the cam, to prevent the cam from rotating to the first section and the protruding portion contact along first rotation direction.

Description

Technical Field

[0001] This disclosure relates to the electrical field, specifically to the design of an operating mechanism and a switching device including the operating mechanism. Background Technology

[0002] With the development of the electrical field, the requirements for the mechanical lifespan of switching devices are becoming increasingly stringent. For example, in circuit breaker devices, closing and opening operations are achieved through an operating mechanism (including energy storage devices). During the closing and opening process, the operating mechanism may experience significant impact forces due to the large energy release. In particular, this impact force can be caused by unintended collisions, which may cause components of the operating mechanism to reverse, resulting in asynchronous movement between different parts. Reversal, for example, can damage components of the electric operating module, affecting its lifespan.

[0003] Therefore, a new operating mechanism needs to be designed to reduce damage to the mechanism and electric operating module caused by asynchronous movement between components during the closing process, thereby improving the mechanical life of the operating mechanism. Utility Model Content

[0004] Therefore, this disclosure aims to solve the problem of reverse rotation caused by component impact in existing operating mechanisms.

[0005] The operating mechanism according to this disclosure includes a housing; a cam pivotally mounted to the housing, the edge of the cam including a first segment, a second segment, and a third segment arranged adjacent to each other along a first rotational direction, the first and third segments being convex segments and the second segment being a concave segment; a drive member for driving the cam to move along the first rotational direction; and a transmission member having a protrusion configured to abut against the third segment. The operating mechanism further includes a damping member fixedly mounted to the housing, the damping member being positioned such that it can move from separation to contact with the cam during the movement of the cam along the first rotational direction, such that the damping member dampens the movement of the cam when in contact with the cam, preventing the cam from rotating along the first rotational direction to the point where the first segment contacts the protrusion.

[0006] The operating mechanism according to this disclosure may also have one or more of the following features, individually or in combination.

[0007] For example, according to one embodiment of the present disclosure, the cam, the transmission member, and the damping member are arranged such that, during the process of the drive member driving the cam in a first rotational direction, after the protrusion moves relative to the second section along the third section past the third section, the cam is damped and stopped by the damping member to prevent the cam from rotating further to the point where the first section contacts the protrusion.

[0008] For example, according to one embodiment of this disclosure, the transmission member is pivotally mounted to the housing, and the pivot axis of the transmission member is parallel to the pivot axis of the cam.

[0009] For example, according to one embodiment of the present disclosure, the operating mechanism further includes a biasing member configured to bias the transmission member toward the pivot center of the cam.

[0010] For example, according to one embodiment of this disclosure, the operating mechanism further includes a limiting member configured to limit the transmission member to a limiting position, wherein the distance between the protrusion and the rotation axis of the cam is greater than the minimum distance between the second segment and the rotation axis of the cam.

[0011] For example, according to one embodiment of this disclosure, the damping element is disposed downstream of the transmission element relative to the cam along a first rotational direction.

[0012] For example, according to one embodiment of this disclosure, the damping element is configured to contact the third segment of the cam to dampen the movement of the cam.

[0013] For example, according to one embodiment of this disclosure, the third segment of the cam is capable of moving in a first rotational direction past the damping member under the action of an external force.

[0014] For example, according to another aspect of this disclosure, a switching device is also proposed, including the operating mechanism described in any embodiment of this disclosure.

[0015] For example, according to one embodiment of the present disclosure, during the closing operation of the switching device, the drive member drives the cam to move along a first rotational direction. Attached Figure Description

[0016] The above and other features and advantages of this disclosure will become more apparent from the following detailed description of exemplary embodiments taken in conjunction with the accompanying drawings, which are for illustrative purposes only and are not intended to limit the scope of this disclosure in any way. The following drawings are not intentionally drawn to scale with actual dimensions; their focus is on illustrating the gist of this disclosure.

[0017] Figure 1 A partial plan view of the operating mechanism according to an embodiment of the present disclosure is shown, wherein the third segment abuts against the protrusion.

[0018] Figure 2 A partial plan view of an operating mechanism according to an embodiment of the present disclosure is shown, wherein the cam is stopped by a damping element.

[0019] Figure 3A partial plan view of the operating mechanism without damping components is shown, in which the third section abuts against the protrusion.

[0020] Figure 4 A partial plan view of the operating mechanism without damping components is shown, in which the first section impacts the protrusion.

[0021] Figure 5 A partial plan view of the operating mechanism without damping is shown, in which the cam is reversed to the position shown due to the impact of the first section with the protrusion.

[0022] Figure 6 The diagram shows a gear that rotates synchronously with the cam and a lever that engages with the gear.

[0023] In each figure, identical or similar parts are represented by the same reference numerals.

[0024] List of reference numerals

[0025] 1 Cam

[0026] 11 First Section

[0027] 12 Part Two

[0028] 13 Third Section

[0029] 2. Transmission components

[0030] 21. Protrusion

[0031] 3 Damping components

[0032] 41 First pivot axis

[0033] 42 Second pivot axis

[0034] 51 Gears

[0035] 52 lever

[0036] D1 First rotation direction Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings.

[0038] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure pertains. The use of terms such as “a,” “an,” or “the” in this patent application specification and claims does not indicate a limitation of quantity, but rather indicates the presence of at least one. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects.

[0039] In this disclosure, the first rotation direction refers to the direction in which the first segment, the second segment, and the third segment are arranged in a circumferential sequence, for example, in Figures 1 to 5 The direction shown is clockwise.

[0040] According to one aspect of this disclosure, an operating mechanism is provided, which includes a housing (not shown), a cam 1, a drive element (not shown), and a transmission element 2, such as... Figure 1 and Figure 2 As shown. The drive element is configured to drive the cam 1 to move, and the cam 1 is configured to change the state of the transmission element 2 to further indirectly or directly drive the moving contact (not shown) to move, for example, to realize the closing operation of the switching device including the operating mechanism.

[0041] Specifically, such as Figure 1 and Figure 2 As shown, cam 1 is pivotally mounted to the housing, for example, pivoting about a first pivot axis 41. The edge of cam 1 may include a first segment 11, a second segment 12, and a third segment 13 arranged adjacent to each other along a first rotational direction D1. Figure 1 As shown, the first segment 11 and the third segment 13 are convex segments, and the second segment 12 is a concave segment. A convex segment refers to a segment whose contour is a curve that protrudes away from the first pivot axis 41 relative to the first pivot axis 41, while a concave segment refers to a segment whose contour is a curve that is concave towards the first pivot axis 41 relative to the first pivot axis 41. For example, as... Figure 1 and Figure 2 As shown, the distance of the second segment 12 from the first pivot axis 41 is less than or equal to the distance of the third segment 13 from the first pivot axis 41. The second segment 12 is recessed between the first segment 11 and the third segment 13.

[0042] Cam 1 can be used to cooperate with transmission member 2. As cam 1 rotates, the state of transmission member 2 can be changed, thereby directly or indirectly driving the moving contact. For example, the edge of cam 1 cooperates with the protrusion 21 of transmission member 2. Transmission member 2 can be pivotally mounted to the housing, for example, pivoting about a second pivot axis 42, the central axis of the first pivot axis 41 and the central axis of the second transmission axis 42 being parallel and not coincident. For example, the main bodies of cam 1 and transmission member 2 can pivot in different pivot planes, and the protrusion 21 can protrude from the main body of transmission member 2 along the direction of the central axis of the second transmission axis 42 so as to abut against the outer edge of cam 1.

[0043] For example, such as Figure 1 As shown, the third section 13 of cam 1 can abut against the protrusion 21 of transmission member 2. At this time, the protrusion 21 is away from the first pivot axis 41 of cam 1. Figure 2 As shown, as the cam 1 rotates, the first segment 13 passes over the protrusion 21, so that the protrusion 21 can be relative to... Figure 1 The position shown is closer to the first shaft 41 of cam 1, that is, the transmission element 2 from Figure 1 Rotate to the position shown Figure 2 The indicated position completes the state transition.

[0044] Cam 1 can be driven by a drive element and moves along a first rotational direction D1 to move from... Figure 1 The positional movement shown causes the third segment 13 to pass over the protrusion 21, for example, to move to... Figure 2 The position shown. Driven by the drive component, the cam 1 may move at a relatively high speed, and thus, even after the third section 13 passes the protrusion 21, it still maintains a relatively high speed, moving to... Figure 2 After reaching the position shown, if the movement of the cam is not restricted, cam 1 will continue to move along the first rotation direction D1.

[0045] For example, Figures 3-5 The operating mechanism without damping element 3 according to this disclosure is shown, with cam 1 from... Figure 3 The position shown (and) Figure 1 (The position shown is the same) Move to Figure 2 After reaching the indicated position, it will further move until the first segment 11 impacts the protrusion 21 along the first rotation direction D1, as shown. Figure 4 As shown. Furthermore, due to the impact, cam 1 will reverse in the opposite direction to the first rotation direction D1, for example, moving to... Figure 5 The impact will damage cam 1 and transmission component 2, affecting the lifespan of the operating mechanism.

[0046] In addition, such as Figure 6As shown, the operating mechanism according to this disclosure may include, for example, a gear 51 that rotates synchronously with the cam 1 on the same axis, and the gear 51, for example, engages with a lever 52. Figure 6 As can be seen, under normal circumstances, the rotation of gear 51 along the first rotation direction D1 can actuate lever 52. However, when cam 1 reverses direction, gear 51 will strike lever 52 in the opposite direction instead of actuating it, which will damage both gear 51 and lever 52. Therefore, limiting the reverse rotation of cam 1 can reduce damage to the operating mechanism and improve its mechanical life.

[0047] In this regard, according to embodiments of the present disclosure, the operating mechanism further includes a damping element 3, which can be fixedly mounted to the housing and is made, for example, of a material with a high coefficient of friction and low hardness. The damping element 3 is used to contact the cam 1, thereby damping the movement of the cam 1. Specifically, the position of the damping element 3 is configured to change from separation to contact with the cam 1 during its movement along the first rotational direction D1, such that the damping element 3 dampens the movement of the cam 1 when in contact with it. For example, causing the cam 1 to move to... Figure 2 The cam stops at the position shown to prevent it from rotating along the first rotation direction D1 to the point where the first segment 11 contacts the protrusion 21. Thus, the damping element 3 decelerates the cam 1, preventing the first segment 11 of the cam 1 from hitting the protrusion 21 and causing it to reverse, thereby reducing damage to the operating mechanism and increasing its mechanical life.

[0048] According to embodiments of this disclosure, the cam 1, transmission member 2, and damping member 3 are arranged such that, during the process of the drive member driving the cam 1 along the first rotational direction D1, the protrusion 21 moves relative to the third segment 13 towards the second segment 12 and passes over the third segment 13 before the cam 1 is damped by the damping member 3 until it stops. For example, in... Figure 2 The position shown is stopped, thereby preventing the cam 1 from rotating further until the first section 11 contacts the protrusion 21 and ensuring that the third section 13 smoothly passes over the protrusion 21.

[0049] For example, the damping element 3 can be positioned downstream of the transmission element 2 relative to the cam 1 along the first rotation direction D1, such as... Figure 1 and Figure 2 As shown. Furthermore, the damping member 3 can be configured to contact the third segment 13 of the cam 1 to dampen the movement of the cam 1. That is, the damping surface of the damping member 3 faces the cam so that it can contact the side surface of the cam corresponding to the third segment 13 for damping. According to this configuration, the third segment 13 of the cam 1 only contacts the damping member 3 and is damped after passing the protrusion 21 along the first rotation direction D1. In addition, the damping surface of the damping member 3 can also be parallel to the plane of rotation of the cam 1 (i.e., perpendicular to the extension direction of the first pivot axis 41) so that it contacts the surface of the cam 1 perpendicular to the extension direction of the first pivot axis 41.

[0050] Furthermore, the damping element 3 can be configured such that the third section 13 of the cam 1 can move past the damping element 3 in the first rotational direction under the action of an external force, so as to reset to its original position. Figure 1 The position shown allows the third segment 13 to re-abut against the protrusion 21. This arrangement ensures that the cam 1 always rotates along the first direction D1 without reversing.

[0051] For example, the operating mechanism may also include a biasing element (not shown) configured to bias the transmission member 2 toward the first pivot axis 41 of the cam 1. Thus, when the third segment 13 of the cam 1 moves past the protrusion 21 to... Figure 2 When in the position shown, the transmission component 2 can move toward the first pivot axis 41 under the action of the biasing component to complete the state switching.

[0052] The operating mechanism may also include a limiting element (not shown) configured to limit the transmission element 2 to a limiting position (i.e., as shown in the image). Figure 2 (as shown in the diagram). In the limited position, the distance between the protrusion 21 and the rotation axis of the cam 1 (the central axis of the first pivot shaft 41) is greater than the minimum distance between the second segment 12 and the rotation axis of the cam 1. This ensures that the cam 1, in the position shown... Figure 2 In the position shown, the protrusion 21 of the transmission member 2 will not collide with the second section 12 or the first section 11.

[0053] For example, according to another aspect of this disclosure, a switching device, such as a circuit breaker, is also proposed, which includes an operating mechanism according to this disclosure. For example, in the closing operation of the switching device, a drive member drives a cam to move along a first rotational direction D1, causing the third section 13 to pass over the protrusion 21, thereby switching the state of the protrusion 21 and causing the moving contact to move, thus completing the closing operation.

[0054] Certain features, structures, or characteristics in one or more embodiments of this disclosure may be appropriately combined.

[0055] The foregoing description is illustrative of the present disclosure and should not be construed as limiting it. While several exemplary embodiments of the present disclosure have been described, those skilled in the art will readily understand that many modifications may be made to the exemplary embodiments without departing from the novel teachings and advantages of the present disclosure. Therefore, all such modifications are intended to be included within the scope of the present disclosure as defined in the claims. It should be understood that the foregoing description is illustrative of the present disclosure and should not be construed as limiting it to the specific embodiments disclosed, and modifications to the disclosed embodiments and other embodiments are intended to be included within the scope of this disclosure.

Claims

1. An operating mechanism, characterized in that, include case, A cam (1) is pivotally mounted to a housing. The edge of the cam (1) includes a first segment (11), a second segment (12), and a third segment (13) arranged adjacent to each other along a first rotation direction (D1). The first segment (11) and the third segment (13) are convex segments, and the second segment (12) is a concave segment. The driving element drives the cam (1) to move along the first rotational direction (D1). The transmission member (2) has a protrusion configured to abut against the third section (13). The operating mechanism further includes a damping element (3), which is fixedly installed to the housing. The position of the damping element (3) is set so that it can change from separation to contact with the cam (1) during the movement of the cam (1) along the first rotation direction (D1), so that the damping element (3) dampens the movement of the cam (1) when it contacts the cam (1), so as to prevent the cam (1) from rotating along the first rotation direction (D1) to contact the first section (11) with the protrusion.

2. The operating mechanism according to claim 1, characterized in that, The cam (1), the transmission member (2), and the damping member (3) are arranged such that, during the process of the drive member driving the cam (1) along the first rotation direction (D1), after the protrusion moves relative to the second section (12) along the third section (13) and passes the third section (13), the cam (1) is damped and stopped by the damping member (3) to prevent the cam (1) from rotating further to the first section (11) and contacting the protrusion.

3. The operating mechanism according to claim 2, characterized in that, The transmission component (2) is pivotally mounted to the housing, and the pivot axis of the transmission component (2) is parallel to the pivot axis of the cam (1).

4. The operating mechanism according to claim 3, characterized in that, The operating mechanism further includes a biasing element configured to bias the transmission element (2) toward the pivot center of the cam (1).

5. The operating mechanism according to claim 4, characterized in that, The operating mechanism further includes a limiting member configured to limit the transmission member (2) to a limiting position, wherein the distance between the protrusion and the rotation axis of the cam (1) is greater than the minimum distance between the second section (12) and the rotation axis of the cam (1).

6. The operating mechanism according to claim 2, characterized in that, The damping element (3) is disposed downstream of the transmission element (2) relative to the cam (1) along the first rotation direction (D1).

7. The operating mechanism according to claim 6, characterized in that, The damping element (3) is configured to contact the third segment (13) of the cam (1) to dampen the movement of the cam (1).

8. The operating mechanism according to claim 7, characterized in that, The third section (13) of the cam (1) can move along the first rotation direction (D1) and pass over the damping member (3) under the action of external force.

9. A switching device, characterized in that, Includes the operating mechanism as described in any one of claims 1-8.

10. The switching device according to claim 9, characterized in that, During the closing operation of the switching device, the driving member drives the cam (1) to move along the first rotation direction (D1).

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