Contact module structure of switch
By introducing a limit clamping boss structure into the isolation switch, the problem of inadequate opening caused by the rebound of the dynamic contact is solved, the stable opening of the dynamic contact and effective control of the arc are achieved, and the service life of the product is extended.
Patent Information
- Application Number
- CN202422325577.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-09-23
AI Technical Summary
The existing isolating switch is in the large open angle contact module. The moving contact rebounds after the contact wall, resulting in inadequate opening, affecting product performance and service life.
The limit clamping boss structure is adopted to limit the movement of the moving contact set, ensure that the moving contacts slowly reach the final opening position, and block the arc through the limit clamping boss, controlling the path of the arc to reduce wear.
Effectively prevent moving contacts from rebounding, ensure that the gate is opened in place, reduce shell wear, and extend product service life.
Smart Images
Figure CN223296722U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and in particular relates to a contact module structure of a switch. Background Art
[0002] As a switching device, an isolating switch is primarily used to "isolate power, perform switching operations, and connect and disconnect low-current circuits." When in the open position, the isolating switch has a specified insulation distance between its contacts and a clear disconnection mark. In the closed position, it can carry the current under normal circuit conditions and the current under abnormal conditions (such as a short circuit) within a specified time.
[0003] As product performance improves, for example, the rated operating voltage for DC applications has risen to 1500V. With increasing demands for higher performance, the operating mechanism of existing disconnectors drives the rotating shaft in the conductive module to complete the rotation when completing the rotation. The inertia of the force transmitted by the operating mechanism completes the subsequent rotation to achieve a 100° opening angle for the moving contact. However, in existing technology, due to the inertia of excessive operating force, the moving contact can easily rebound after contacting the wall, thus failing to achieve the preset maximum opening angle (100°) and causing the switch to not open properly. Utility Model Content
[0004] The present utility model addresses the drawback of existing wide-angle contact modules, where the movable contact rebounds after contacting the wall, resulting in incomplete opening. The present utility model provides a switch contact module structure with a position-limiting clamping boss that intercepts arcs escaping between the movable and stationary contacts, allowing the arc to elongate and taper along a designed path until it dissipates. The position-limiting clamping boss forces the movable contact assembly inward, stopping it from moving, reducing wear on the housing and extending the product's service life.
[0005] Technical Solution
[0006] In order to achieve the above technical objectives, the utility model provides a contact module structure of a switch, which includes a moving contact. During the rotation of the moving contact, it can contact and disengage with the static contact, thereby placing the main circuit of the switch in a closed or open state. The characteristic is that during the rotation of the moving contact, the moving contact piece group in the moving contact can be limited by the limit clamping boss to slowly reach the final open position.
[0007] In some embodiments, the limit clamping boss is arranged in the contact module housing on a side away from the closing position of the movable and static contacts, and the limit clamping boss is located on the movement trajectory of the contact part of the movable contact piece in the movable contact piece group.
[0008] In some embodiments, the position-limiting clamping boss is provided with a slope that gradually increases in the same direction as the movement trajectory of the contact portion of the moving contact piece in the moving contact piece group.
[0009] In some solutions, the movable contact piece group is inserted into a rotating shell, the rotating shell is installed in the movable contact installation slot in the contact module shell and can rotate, and the movable contact piece group can rotate synchronously with the rotating shell.
[0010] In some solutions, both ends of the movable contact piece group extend out of the rotating shell, and at least one end of the movable contact piece group can be limited by a limiting clamping boss.
[0011] In some embodiments, the movable contact piece group includes an upper movable contact piece and a lower movable contact piece, and the limit clamping boss includes an upper limit clamping boss and a lower limit clamping boss. The ends of the upper movable contact piece and the lower movable contact piece extending out of the rotating shell can be limit clamped by the upper limit clamping boss and the lower limit clamping boss.
[0012] Beneficial effects
[0013] The utility model provides a contact module structure for a switch, comprising a movable contact 1. The movable contact 1 can engage and disengage with a stationary contact during rotation, thereby placing the switch main circuit in a closed or open state. During rotation of the movable contact 1, the movable contact piece assembly in the movable contact can be limited by a limit clamping boss to slowly reach a final open position. The limit clamping boss can block the arc escaping between the movable contact and the stationary contact, allowing the arc to elongate and thin along a designed path until it dissipates. The limit clamping boss forces the movable contact piece assembly to clamp inward, thereby stopping movement, reducing wear on the housing and extending the product's service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.
[0015] Attachment Figure 1 It is a structural schematic diagram of the contact module in the closed state in an embodiment of the present utility model.
[0016] Attachment Figure 2 It is a structural schematic diagram of the contact module in the open state in an embodiment of the present utility model.
[0017] Attachment Figure 3 It is a structural schematic diagram of the movable contact piece group in the embodiment of the utility model in the unlimited clamping state.
[0018] Attachment Figure 4 It is a structural schematic diagram of the movable contact piece group in the embodiment of the utility model in the limited clamping state. DETAILED DESCRIPTION
[0019] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.
[0020] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.
[0022] In this application, unless otherwise expressly specified or limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or that the first feature and the second feature are indirectly in contact through an intermediate medium. Furthermore, a first feature being “above,” “above,” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below,” “below,” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0023] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the relevant listed items.
[0024] Example
[0025] As attached Figure 1 and 2 As shown, a contact module structure of a switch includes a moving contact 1. The moving contact 1 can contact and disengage with the static contact during rotation, thereby placing the switch main circuit in a closed or open state. The moving contact piece group 101 is inserted into the rotating shell 4. The rotating shell 4 is installed in the moving contact mounting slot 301 in the contact module shell 3 and can rotate. The moving contact piece group 101 can rotate synchronously with the rotating shell 4. During the rotation of the moving contact 1, the moving contact piece group 101 in the moving contact 1 can be limited by the limiting clamping boss 2 to slowly reach the final open position. Both ends of the moving contact piece group 101 extend out of the rotating shell 4, and at least one end of the moving contact piece group 101 can be limited and clamped by the limiting clamping boss 2.
[0026] Specifically, as shown in the attached Figure 2 As shown, the limit clamping boss 2 is arranged in the contact module housing 3 on the side away from the closing position of the dynamic and static contacts. The limit clamping boss 2 is located on the movement trajectory of the contact portion of the dynamic contact piece in the dynamic contact piece group 101. The limit clamping boss 2 is provided with a slope that gradually increases in the same direction as the movement trajectory of the contact portion of the dynamic contact piece in the dynamic contact piece group 101. The dynamic contact piece group 101 includes an upper dynamic contact piece 101a and a lower dynamic contact piece 101b, and the limit clamping boss 2 includes an upper limit clamping boss 201 and a lower limit clamping boss 202. During the opening process, as shown in the attached figure, Figure 3 As shown in the figure, the upper movable contact piece 101a and the lower movable contact piece 101b have not yet contacted the upper limit clamping boss 201 and the lower limit clamping boss 202, and the movable contact 1 continues to rotate until the switch is opened. Figure 4 As shown, the ends of the upper movable contact piece 101a and the lower movable contact piece 101b extending out of the rotating housing 4 can be limited and clamped by the upper limit clamping boss 201 and the lower limit clamping boss 202 .
[0027] The utility model provides a contact module structure for a switch, comprising a movable contact 1. The movable contact 1 can engage and disengage with a stationary contact 5 during rotation, thereby placing the switch main circuit in a closed or open state. During rotation, a movable contact assembly 101 in the movable contact 1 can be limited by a position-limiting clamping boss 2 to slowly reach a final open position. The position-limiting clamping boss can block arcs escaping between the movable and stationary contacts, allowing the arc to elongate and thin along a designed path until it dissipates. The position-limiting clamping boss forces the movable contact assembly 101 inwardly to stop movement, thereby reducing wear on the housing and extending the product's service life.
[0028] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0029] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.
Claims
1. A contact module structure of a switch, comprising a movable contact (1), wherein the movable contact (1) can contact and disengage with a stationary contact during rotation, thereby placing the main circuit of the switch in a closed or open state, and characterized in that: During the rotation of the moving contact (1), the moving contact piece group (101) in the moving contact (1) can be limited by the limiting clamping boss (2) and slowly reach the final opening position.
2. The contact module structure of a switch according to claim 1, characterized in that: The position-limiting clamping boss (2) is arranged in the contact module housing (3) on a side away from the closing position of the moving and static contacts, and the position-limiting clamping boss (2) is located on the movement trajectory of the contact portion of the moving contact piece in the moving contact piece group (101).
3. The contact module structure of a switch according to claim 2, characterized in that: The position-limiting clamping boss (2) is provided with a slope that gradually increases in the same direction as the brake motion track of the contact portion of the moving contact piece in the moving contact piece group (101).
4. The contact module structure of a switch according to claim 2, wherein: The movable contact piece group (101) is inserted into the rotating housing (4), and the rotating housing (4) is installed in the movable contact installation slot (301) in the contact module housing (3) and can rotate. The movable contact piece group (101) can rotate synchronously with the rotating housing (4).
5. The contact module structure of a switch according to claim 4, characterized in that: Both ends of the movable contact piece group (101) extend out of the rotating housing (4), and at least one end of the movable contact piece group (101) can be limited by a limiting clamping boss (2).
6. The contact module structure of a switch according to claim 5, characterized in that: The movable contact piece group (101) comprises an upper movable contact piece (101a) and a lower movable contact piece (101b); the position-limiting clamping boss (2) comprises an upper position-limiting clamping boss (201) and a lower position-limiting clamping boss (202); and one end of the upper movable contact piece (101a) and the lower movable contact piece (101b) extending out of the rotating housing (4) can be position-limited and clamped by the upper position-limiting clamping boss (201) and the lower position-limiting clamping boss (202).