Auxiliary module of electric appliance switch equipment and electric appliance switch equipment

Abstract

The utility model relates to the technical field of electric appliance switches, and particularly discloses an auxiliary module of electric appliance switch equipment and the electric appliance switch equipment. The auxiliary module comprises a shell, a movable frame arranged in the shell, an auxiliary static contact and an auxiliary moving contact, the movable frame is provided with a sliding block capable of sliding, the movable frame is linked with the auxiliary moving contact through the sliding block, a rotatable lever is arranged in the shell, the lever is provided with a coupling part coupled with the shell and a second abutting part abutting against the top of the sliding block, and the second abutting part abuts against the top of the sliding block. The movable frame is provided with a downward pressing part, and the downward pressing part abuts against the position between the coupling part of the lever and the second abutting part. A lever and a sliding block are arranged between a movable frame and an auxiliary moving contact of an auxiliary module, so that the displacement of the sliding block is larger than that of the movable frame, the auxiliary moving contact and an auxiliary static contact which are linked with the sliding block are connected and then disconnected, and an external electric appliance switch equipment main module connected with the movable frame is connected and then disconnected. Therefore, the auxiliary module can protect the electrical equipment with better safety and higher reliability.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switch equipment, and specifically discloses an auxiliary module of an electrical switch equipment and the electrical switch equipment. Background Art

[0002] An electrical switch is a device used to control the on and off of current in a circuit. Its main functions include opening and closing circuits, protecting electrical equipment, and realizing automatic control. Electrical switches play a very important role in power systems and are widely used in various electrical equipment and facilities. For example, isolating switches, circuit breakers, contactors, relays, etc. can all be classified as a type of electrical switch.

[0003] Taking the isolating switch as an example, a kick mechanism is set inside to drive the contact and separation of the moving contact and the static contact to achieve the connection and disconnection of the circuit. For example, a kick rotary switch disclosed in Patent 201420411704.3 realizes the kick function of the rotary switch by setting a rotating component in coordination with a moving contact frame and other structures, making the contact force between the moving contact and the static contact more stable.

[0004] In order to improve the safety of electrical equipment, the existing low-voltage electrical switches will connect the auxiliary module on one side of the main module, so that the product has main contacts and auxiliary contacts. The main circuit of the main contacts is the live wire, and the auxiliary circuit of the auxiliary contacts is the neutral wire or grounding protection. By controlling the auxiliary circuit to be connected first and then disconnected, the main circuit is connected later and disconnected first. In this way, the auxiliary circuit plays a role in protecting equipment or personal safety.

[0005] Taking the above patent as an example, the auxiliary module is arranged on one side of the main module, and the linkage is realized by connecting the movable frame with the movable frame of the auxiliary module. However, in actual operation of this type of low-voltage electrical appliance, when the main contact module is actuated and drives the auxiliary contact module to act at the same time, due to the certain distance between the movable contact frame and the movable frame of the auxiliary module, it is easy for the movable frame to tilt and the connection with the movable contact frame to loosen due to dimensional deviation, assembly error, mechanical fatigue and other problems, causing the circuit of the auxiliary module to be connected or disconnected first. In this way, in the three-phase current, there is a risk of burning equipment or causing electric leakage and injuring people, which is similar to the disconnection of the neutral line, or the risk of electric leakage and injuring people after the protective grounding.

[0006] In order to overcome the above defects, it is necessary to provide an auxiliary module that can achieve better reliability and safety by first connecting and then disconnecting the auxiliary contacts. Utility Model Content

[0007] The utility model aims to overcome the deficiencies of the prior art and provide an auxiliary module of an electrical switch device and an electrical switch device.

[0008] On the one hand, the utility model discloses an auxiliary module of an electrical switch device, which adopts the following technical solution:

[0009] An auxiliary module of an electrical switch device comprises a shell, a movable frame arranged in the shell, an auxiliary static contact and an auxiliary moving contact, the movable frame is provided with a slidable slider, the movable frame is linked with the auxiliary moving contact through the slider, a rotatable lever is provided in the shell, the lever is provided with an axial connection portion axially connected to the shell and a second abutting portion abutting against the top of the slider, the movable frame is provided with a pressing portion, and the pressing portion abuts between the axial connection portion and the second abutting portion of the lever.

[0010] Preferably, the lever is provided with a first abutting portion abutting against the pressing portion, the distance from the first abutting portion to the shaft connecting portion is L1, the distance from the second abutting portion to the shaft connecting portion is L2, L1<L2; when the movable frame moves a distance h1, the slider is driven by the lever to move a distance h2, h1 / h2=L1 / L2, h1<h2.

[0011] Preferably, the shell is provided with a window hole, and the movable frame is provided with a protrusion or a groove for synchronous linkage with the outside at a position corresponding to the window hole.

[0012] Preferably, the top of the sliding block has an abutment surface and a yielding inclined surface, the abutment surface abuts against the second abutment portion of the lever, and the yielding inclined surface is located on a side of the abutment surface close to the shaft connection portion of the lever.

[0013] Preferably, guide grooves are provided on both sides of the sliding block, guide ribs matching the guide grooves are provided in the movable frame, and the sliding block can be slidably arranged in the movable frame.

[0014] Preferably, the movable frame is provided with a side hole, the lever extends into the movable frame, and the pressing portion is arranged on the inner top wall of the side hole.

[0015] Preferably, the pressing portion protrudes downward, and a side of the pressing portion away from the lever shaft connection portion forms a recessed surface.

[0016] Preferably, an auxiliary moving contact elastic member is disposed in the housing, and the auxiliary moving contact elastic member presses the auxiliary moving contact against the bottom of the slider.

[0017] On the other hand, the utility model discloses an electrical switch device, which adopts the following technical solution:

[0018] An electrical switch device comprises a main module and an auxiliary module of the electrical switch device.

[0019] Preferably, the main module comprises a moving contact frame, a main static contact, an active contact arranged on the moving contact frame, and a driving assembly for driving the moving contact frame to move, and the moving contact frame is connected to a movable frame of the auxiliary module.

[0020] Compared with the prior art, the utility model has at least the following beneficial effects:

[0021] The utility model arranges a lever and a slider between a movable frame and an auxiliary moving contact of the auxiliary module, and forms two different lever points on the lever corresponding to the movable frame and the slider respectively. In this way, the lever principle is utilized to make the displacement of the slider greater than the displacement of the movable frame, that is, the response movement speed of the auxiliary moving contact is greater than the response movement speed of the movable frame, so that the auxiliary moving contact and the auxiliary static contact linked with the slider are connected first and disconnected later, while the main module of the external electrical switch device connected with the movable frame is connected later and disconnected first, thereby making the auxiliary module realize the function of protecting the electrical equipment with better safety and higher reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of the electrical switch device of this embodiment;

[0023] Figure 2 is a partial cross-sectional view of the electrical switch device of this embodiment;

[0024] Figure 3 This is a schematic diagram of the structural disassembly of the auxiliary module of this embodiment;

[0025] Figure 4 is a cross-sectional view of the auxiliary module of this embodiment;

[0026] Figure 5 is a schematic diagram of the housing structure of the auxiliary module of this embodiment;

[0027] Figure 6 Schematic diagram of the lever structure of the auxiliary module of this embodiment;

[0028] Figure 7 This is a schematic diagram of the slider structure of the auxiliary module of this embodiment;

[0029] Figure 8 is a cross-sectional view of a movable frame of an auxiliary module of this embodiment;

[0030] Fig. 9 A top view of a movable frame of an auxiliary module of this embodiment;

[0031] Fig.10 A schematic diagram of the movable frame of the auxiliary module of this embodiment from another angle;

[0032] Fig.11 It is a schematic diagram of the structure of the lever and the slider of the auxiliary module of this embodiment in the movable frame;

[0033] Fig.12 This is a schematic diagram of the connection between the movable frame of the auxiliary module and the movable contact frame of the main module of this embodiment;

[0034] Fig.13 Schematic diagram of the internal structure of the auxiliary module and the main module of this embodiment.

[0035] Description of Figure Numbers:

[0036] 100. Main module; 200. Auxiliary module; 1. Moving contact frame; 11. Operating member; 2. Main static contact; 3. Active contact; 31. Main contact head elastic member; 4. Shell; 41. Positioning hole; 42. Window hole; 5. Movable frame; 51. Pressing part; 52. Connecting block; 53. Groove; 54. Guide rib; 55. Side hole; 56. Displacement concave surface; 6. Slider; 61. Abutment surface; 62. Displacement inclined surface; 63. Guide groove; 7. Lever; 71. Axial connection part; 72. First abutment part; 73. Second abutment part; 8. Auxiliary static contact; 9. Auxiliary moving contact; 10. Auxiliary moving contact elastic member. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0038] The utility model discloses an auxiliary module of an electrical switch device and an electrical switch device, referring to Figure 1-13 The electrical switch device takes an isolating switch as an example, which includes a main module 100 and an auxiliary module 200.

[0039] The main module 100 includes a moving contact frame 1, a main static contact 2, an active contact 3 arranged on the moving contact frame 1, and a driving assembly for driving the moving contact frame 1 to move. The moving contact frame 1 is driven downward by the operating member 11, pushing the active contact 3 to move downward and separate from the main static contact 2, and the circuit is disconnected; the moving contact frame 1 moves upward to release the limit on the active contact 3, and the elastic member 31 of the main contact head is elastically released, driving the active contact 3 to move upward and contact with the main static contact 2, and the circuit is connected. The specific structure of the main module 100 can be referred to patent 201420411704.3, which will not be repeated here.

[0040] like Figure 3-10As shown, the auxiliary module 200 includes a housing 4, a movable frame 5 disposed in the housing 4, an auxiliary static contact 8, and an auxiliary moving contact 9. The movable frame 5 is provided with a slidable slider 6, and the movable frame 5 is linked with the auxiliary moving contact 9 through the slider 6. A rotatable lever 7 is provided in the housing 4, and the lever 7 is provided with an axial connection portion 71, a first abutting portion 72, and a second abutting portion 73. The axial connection portion 71 is axially connected to a positioning hole 41 provided in the housing 4, the first abutting portion 72 is disposed between the axial connection portion 71 and the second abutting portion 73, and the second abutting portion 73 abuts against the top of the slider 6. The movable frame 5 is provided with a pressing portion 51, and the pressing portion 51 abuts against the first abutting portion 72, that is, the pressing portion 51 abuts between the axial connection portion 71 and the second abutting portion 73 of the lever 7.

[0041] By arranging the lever 7 and the slider 6 between the movable frame 5 and the auxiliary moving contact 9, the lever principle is used to make the second abutting portion 73 of the lever 7 as the lever output point move when the pressing portion 51 of the movable frame 5 drives the first abutting portion 72 as the lever working point to move. Since the first abutting portion 72 is located between the shaft connection portion 71 and the second abutting portion 73, the first abutting portion 72 is located between the shaft connection portion 71 and the second abutting portion 73. Fig.11 , the distance between the first abutting portion 72 and the shaft connection portion 71 is L1, and the distance between the second abutting portion 73 and the shaft connection portion 71 is L2, then L1<L2; when the movable frame 5 moves a distance of h1, the slider 6 is driven by the lever to move a distance of h2, then h1 / h2=L1 / L2, that is, h1<h2, and the lever principle is used to achieve that the displacement of the slider 6 is greater than the displacement of the movable frame 5. In other words, the response movement speed of the auxiliary moving contact 9 is greater than the response movement speed of the movable frame 5, so that the auxiliary moving contact 9 linked with the slider 6 and the auxiliary static contact 8 are connected first and then disconnected, and the active contact 3 on the movable contact frame 1 connected to the movable frame 5 is connected with the main static contact 2 later and disconnected first, so that the auxiliary module 200 is connected before the main module 100 and then disconnected, so that the auxiliary module 200 can achieve the function of protecting electrical equipment with better safety and higher reliability.

[0042] In this embodiment, a window hole 42 is provided on one side of the housing 4, a connecting block 52 protruding outward is provided on the outer side of the movable frame 5 corresponding to the housing window hole 42, and a mounting groove matching and connecting the connecting block 52 is provided on the movable contact frame 1, so that the movable contact frame 1 moves synchronously with the movable frame 5. In addition, a window hole 42 may also be provided on the other side of the housing 4, and a groove 53 is provided on the movable frame 5 correspondingly for connecting with the outside, so that other modules can be assembled for synchronous linkage.

[0043] In this embodiment, the top of the slider 6 has an abutment surface 61 and a yielding inclined surface 62, the abutment surface 61 is in abutment with the abutment portion of the lever 7, the yielding inclined surface 62 is located on the side of the abutment surface 61 close to the axial connection portion 71 of the lever 7, guide grooves 63 are provided on both sides of the slider 6, and the movable frame 5 is provided with guide ribs 54 matching the guide grooves 63, the slider 6 can be slidably set in the movable frame 5, the movable frame 5 is provided with a side hole 55, the lever 7 extends into the movable frame 5 from the side hole 55, and the pressing portion 51 is set on the inner top wall of the side hole 55. Of course, in other embodiments, the slider 6 can also be slidably set on the outside of the movable frame 5, and the slider 6 is set in the inner cavity of the movable frame 5, which is beneficial to the reliability and stability of its linkage process. In addition, referring to Figure 8 The pressing portion 51 can be configured to protrude downward, so that a recessed surface 56 is formed on the side of the pressing portion 51 away from the shaft connection portion 71 of the lever 7, which can expand the counterclockwise rotation range of the lever 7, thereby flexibly adjusting a larger lever ratio according to product requirements.

[0044] In this embodiment, an auxiliary moving contact elastic member 10 is provided in the housing 4, and the auxiliary moving contact elastic member 10 is located at the bottom of the auxiliary moving contact 9. The auxiliary moving contact elastic member 10 presses the auxiliary moving contact 9 against the bottom of the slider 6. Of course, in other embodiments, the slider 6 and the auxiliary moving contact 9 can also be linked by other connection structures. The working process of the auxiliary module of the electrical switch device in this embodiment is as follows: when the movable frame 5 is driven to move downward, the pressing portion 51 of the movable frame 5 drives the lever 7 to rotate clockwise, and the second abutting portion 73 of the lever 7 presses the slider 6 to move downward, and the slider 6 pushes the auxiliary moving contact 9 to separate from the auxiliary static contact 8, and the circuit is disconnected; when the movable frame 5 is driven to move upward, the pressing portion 51 of the movable frame 5 releases the limit on the lever 7, and removes the counterclockwise rotation restriction on the lever 7, thereby releasing the restriction on the upward movement of the slider 6. Under the action of the auxiliary moving contact elastic member 10, the auxiliary moving contact 9 moves upward and contacts with the auxiliary static contact 8, and the circuit is connected.

[0045] The technical solution provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. An auxiliary module of an electrical switch device, comprising a housing, a movable frame arranged in the housing, an auxiliary static contact and an auxiliary moving contact, characterized in that: The movable frame is provided with a slidable slider, and the movable frame is linked with the auxiliary moving contact through the slider. A rotatable lever is provided in the shell, and the lever is provided with an axially connected portion axially connected to the shell and a second abutting portion abutting against the top of the slider. The movable frame is provided with a pressing portion, and the pressing portion abuts between the axially connected portion and the second abutting portion of the lever.

2. The auxiliary module of the electrical switch device according to claim 1, characterized in that: The lever is provided with a first abutting portion abutting against the pressing portion, the distance from the first abutting portion to the shaft connecting portion is L1, the distance from the second abutting portion to the shaft connecting portion is L2, L1<L2; when the movable frame moves a distance of h1, the slider is driven by the lever to move a distance of h2, h1 / h2=L1 / L2, h1<h2.

3. The auxiliary module of the electrical switch device according to claim 1, characterized in that: The shell is provided with a window hole, and the movable frame is provided with a protrusion or a groove for synchronous linkage with the outside at a position corresponding to the window hole.

4. The auxiliary module of the electrical switch device according to claim 1, characterized in that: The top of the sliding block is provided with a contact surface and a yielding inclined surface, the contact surface is in contact with the second contact portion of the lever, and the yielding inclined surface is located on a side of the contact surface close to the shaft connection portion of the lever.

5. The auxiliary module of the electrical switch device according to claim 1, characterized in that: Guide grooves are arranged on both sides of the slide block, guide ribs matching the guide grooves are arranged in the movable frame, and the slide block can be slidably arranged in the movable frame.

6. The auxiliary module of the electrical switch device according to claim 1, characterized in that: The movable frame is provided with a side hole, the lever extends into the movable frame, and the pressing portion is arranged on the inner top wall of the side hole.

7. The auxiliary module of the electrical switch device according to claim 1, characterized in that: The pressing portion protrudes downward, and a side of the pressing portion away from the lever shaft connection portion forms a recessed surface.

8. The auxiliary module of the electrical switch device according to claim 1, characterized in that: An auxiliary moving contact elastic member is arranged in the housing, and the auxiliary moving contact elastic member presses the auxiliary moving contact against the bottom of the slider.

9. An electrical switch device, characterized in that: It comprises a main module and an auxiliary module of the electrical switch device according to any one of claims 1-8.

10. The electrical switch device according to claim 9, characterized in that: The main module comprises a moving contact frame, a main static contact, an active contact arranged on the moving contact frame, and a driving assembly for driving the moving contact frame to move. The moving contact frame is connected to a movable frame of the auxiliary module.

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