Switching device

Abstract

The utility model relates to a switch device. The switch device comprises a housing; the handle can pivot between a switching-on position and a switching-off position; a side plate fixed to the housing; the transmission assembly is operably connected between the handle and the moving contact support and is used for transmitting the movement of the handle to the moving contact support, and the transmission assembly comprises a transmission part which is pivotally arranged on the shell and is connected to the handle; and the four-connecting-rod mechanism is connected between the transmission part and the moving contact support, and the four-connecting-rod mechanism is configured to transmit the movement of the transmission part to the moving contact support so as to enable the moving contact support to rotate.

Description

Technical Field

[0001] The present application relates to a switchgear. Background Art

[0002] Generally, switchgear such as circuit breakers and disconnectors have transmission components for closing and opening the switch, which are responsible for storing and releasing mechanical energy and transferring the energy to the disconnecting unit.

[0003] When the moving contact and the stationary contact of the disconnecting unit are separated, an arc will be generated. In order to increase the arc extinguishing ability of the switchgear, arc extinguishing grids can be added and the opening distance of the moving contact can be increased. However, adding arc extinguishing grids requires a high space. Therefore, how to increase the opening distance of the moving contact under limited space conditions has become an effective way to increase the arc extinguishing ability. Utility Model Content

[0004] In order to overcome the above shortcomings, the present application provides a switching device, including: a housing; a handle capable of pivoting between a closing position and an opening position; a side plate fixed to the housing; a transmission assembly operably connected between the handle and the moving contact bracket, for transmitting the movement of the handle to the moving contact bracket, the transmission assembly including: a transmission member pivotally mounted to the housing and connected to the handle; a four-bar linkage connected between the transmission member and the moving contact bracket; wherein the four-bar linkage is configured to transmit the movement of the transmission member to the moving contact bracket so as to rotate the moving contact bracket.

[0005] Advantageously, the four-bar linkage is configured to adjust the size of the links based on a predetermined opening distance of the moving contacts of the breaking unit.

[0006] Advantageously, the four-bar linkage comprises: a crank, which is pivotally mounted to the side plate via a first axis, and one end of the crank has a first opening, and the second axis passes through the first opening to connect the crank to the transmission member; a connecting member, one end of which has a second opening, and the second axis passes through the second opening to connect the connecting member to the transmission member, and the other end of the connecting member has a third opening, and the third axis passes through the third opening; a driving member, which is pivotally mounted to the housing or the side plate via a fourth axis, has a fourth opening, and the third axis passes through the fourth opening to connect the connecting member to the driving member.

[0007] Advantageously, the driving member has a driving feature, and when the driving member rotates, the driving feature can abut against the moving contact support to push the moving contact support to rotate.

[0008] Advantageously, the crank and the connecting member are arranged on opposite sides of the transmission member.

[0009] Advantageously, the side plate comprises a first side plate and a second side plate, and the first side plate and the second side plate are arranged on opposite sides of the driving member.

[0010] Advantageously, the four-bar linkage comprises a first four-bar linkage and a second four-bar linkage, and the first four-bar linkage and the second four-bar linkage are arranged on opposite sides of the driving member.

[0011] Advantageously, the switchgear comprises a circuit breaker and a disconnector. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and other features and advantages of the exemplary embodiments of the present invention will become more apparent from the following detailed description in conjunction with the accompanying drawings, and the description and drawings are only for illustrative purposes and are not intended to limit the scope of the present invention in any way, wherein:

[0013] Figure 1 A schematic diagram of a switch device according to the present application is shown, and the switch device is in a closed state.

[0014] Figure 2 A schematic diagram of a switch device according to the present application is shown, and the switch device is in an open state at this time.

[0015] Figure 3 Shown with Figure 1 A partial schematic diagram of the corresponding switch device, mainly showing the four-bar linkage.

[0016] Figure 4 Shown with Figure 2 A partial schematic diagram of the corresponding switch device, mainly showing the four-bar linkage.

[0017] Figure 5 An exploded view of a first embodiment of a switchgear according to the present application is shown.

[0018] Figure 6 A perspective view of a first embodiment of a switchgear according to the present application is shown.

[0019] Figure 7 An exploded view of a second embodiment of a switchgear according to the present application is shown. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the technical solution of the present disclosure clearer, the technical solution of the embodiment of the present disclosure will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present disclosure. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0021] Compared to the embodiments shown in the drawings, feasible implementations within the scope of the present disclosure may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0022] Unless otherwise defined, the technical or scientific terms used herein shall have the usual meanings understood by persons of ordinary skill in the field to which the present disclosure belongs. The words "first", "second" and similar words used in the patent application specification and claims of the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. When the number of components is not specified, the number of components may be one or more; similarly, words such as "one", "the", "said" and the like do not necessarily indicate a quantitative limitation. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate the relative orientation relationship when the device is in use or the orientation relationship shown in the drawings. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

[0023] Figure 1 A schematic diagram of a switchgear (including a circuit breaker, a disconnector, etc.) is shown, wherein the switchgear is in a closed state. Figure 2 The switch device is shown in the open state. The switch device comprises a housing 1 (see Figure 5 ), a handle (not shown) is mounted to the housing 1 and can pivot between a closing position and an opening position. The side plate 2 is fixed to the housing 1. The transmission assembly 3 is operably connected between the handle and the moving contact bracket 4 (see Figure 5 ) for transmitting the movement of the handle to the moving contact bracket. The moving contact 41 is mounted to the moving contact bracket 4 and can rotate with the rotation of the moving contact bracket, thereby rotating between the position of contact and separation with the static contact 42.

[0024] The transmission assembly 3 includes a transmission member 31, which is pivotally mounted to the housing and connected to the handle so that it can move accordingly when the handle is pivoted. In the present application, the pivoting of the handle causes the transmission member 31 to move accordingly. As for how the pivoting of the handle causes the transmission member 31 to move, it is well known to those skilled in the art and is not the focus of the present application. Therefore, it is not described in the present application. The transmission assembly also includes a four-bar linkage 32, which is connected between the transmission member 31 and the moving contact bracket 4, so as to transmit motion between the transmission member 31 and the moving contact bracket 4.

[0025] like Figure 3 and 4 As shown, the four-bar linkage 32 includes a crank 321 (outlined by a dotted line), which is pivotally mounted to the side plate 2 via a first shaft 322, and one end of the crank 321 has a first opening, and the second shaft 323 passes through the first opening to connect the crank 321 to the transmission member 31. One end of the connecting member 324 has a second opening, and the second shaft 323 passes through the second opening to connect the connecting member 324 to the transmission member 31, and the other end of the connecting member 324 has a third opening, and the third shaft 325 passes through the third opening. The driving member 326 is pivotally mounted to the housing via a fourth shaft 327, and has a fourth opening, and the third shaft 325 passes through the fourth opening to connect the connecting member 324 to the driving member 326.

[0026] Figure 3 Indicates the closing status. Figure 4 When the switch device switches from the closed state to the open state, the pivoting of the handle drives the transmission member 31 to move accordingly, thereby driving the moving contact bracket 4 to rotate via the four-bar linkage.

[0027] By rationally designing the connecting rod size of the four-bar linkage, the maximum opening distance of the moving contact can be changed. That is, the connecting rod size is adjusted based on the predetermined opening distance of the moving contact of the breaking unit, thereby increasing the maximum opening distance of the moving contact under limited space requirements and improving the arc extinguishing capability.

[0028] The driving member 326 has a driving feature 328 . When the driving member rotates, the driving feature can abut against the moving contact support to push the moving contact support to rotate.

[0029] Figure 5 and 6 An exploded view and a perspective view, respectively, of a first embodiment of a switchgear are shown.In this first embodiment, the drive member is pivotably mounted to the housing.

[0030] Figure 7 An exploded view of a second embodiment of the switchgear is shown. The difference between the second embodiment and the first embodiment is that the drive member is pivotally mounted to the side plate instead of the housing. As a result, deformation and dimensional tolerances are greatly reduced, thereby reducing overtravel losses and transmitting motion more accurately.

[0031] The crank 321 and the connecting member 324 are disposed on opposite sides of the transmission member 31 .

[0032] The side plate includes a first side plate and a second side plate, and the first side plate and the second side plate are arranged on opposite sides of the driving member. Correspondingly, the four-bar linkage includes a first four-bar linkage and a second four-bar linkage, and the first four-bar linkage and the second four-bar linkage are arranged on opposite sides of the driving member. In other words, the side plates and the four-bar linkage are symmetrically arranged on opposite sides of the driving member to transmit motion in a more balanced manner.

[0033] Through the switch device of the present application, the opening and closing positions of the moving contacts can be changed, and the structure is simple, the cost is low, and the parts are reused to the greatest extent; by adjusting the size of the connecting rod of the four-bar mechanism, the space requirements of the arc extinguishing system can be flexibly adapted.

[0034] Although the present invention has been described in the specification and illustrated in the drawings with reference to various embodiments, those skilled in the art will appreciate that the above embodiments are merely preferred implementations, and certain technical features in the embodiments may not be necessary for solving specific technical problems, so that these technical features may be absent or omitted without affecting the solution of the technical problems or the formation of technical solutions; moreover, the features, elements and / or functions of one embodiment may be appropriately combined, coupled or coordinated with the features, elements and / or functions of one or more other embodiments, unless the combination, coupling or coordination is obviously not feasible.

Claims

1. A switch device, comprising: case; a handle capable of pivoting between a closed position and an open position; a side panel fixed to the housing; The transmission assembly is operably connected between the handle and the moving contact bracket to convert the movement of the handle into The transmission assembly is transmitted to the moving contact bracket, and includes: a transmission member pivotably mounted to the housing and coupled to the handle; The four-bar linkage is connected between the transmission member and the moving contact bracket. The four-bar linkage is configured to transmit the motion of the transmission member to the moving contact bracket so that the moving contact Head support rotation.

2. The switchgear according to claim 1, characterized in that The four-bar linkage configuration The size of the connecting rod is adjusted based on the predetermined opening distance of the moving contacts of the breaking unit.

3. The switch device according to claim 1, characterized in that The four-bar linkage comprises: a crank pivotally mounted to the side plate via a first axis, and having a first opening at one end of the crank, A second shaft passes through the first opening to connect the crank to the transmission member; A connecting member having a second opening at one end, through which a second shaft passes to connect the connecting member to the The transmission member, the other end of the connecting member has a third opening, and the third shaft passes through the third opening; The drive member is pivotally mounted to the housing or the side plate via a fourth axis and has a fourth opening, a third The shaft passes through the fourth opening to connect the connecting member to the driving member.

4. The switchgear according to claim 3, characterized in that The drive element has a drive characteristic When the driving member rotates, the driving feature can abut against the moving contact bracket to push the moving contact bracket Rotate.

5. The switchgear according to claim 3, characterized in that The crank and the connection The components are arranged on opposite sides of the transmission component.

6. The switchgear according to any one of claims 1 to 5, characterized in that The side panels The drive member comprises a first side plate and a second side plate, wherein the first side plate and the second side plate are arranged on opposite sides of the drive member.

7. The switchgear according to claim 6, characterized in that The four-bar linkage includes A four-bar linkage and a second four-bar linkage, wherein the first four-bar linkage and the second four-bar linkage are arranged on opposite sides of the drive member.

8. The switchgear according to any one of claims 1 to 5, characterized in that The switchgear is a circuit breaker or a disconnector.

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