Moving contact mounting structure and switching device
By adopting a snap structure with elastic inverted and clamped joints between the movable contact and the contact holder, the problems of installation difficulties and deformation of the movable contacts in the prior art are solved, and the effect of stable installation and convenient disassembly is achieved.
Patent Information
- Application Number
- CN202422378761.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-09-27
AI Technical Summary
In the prior art, it is difficult to connect the heat riveted contacts between the movable contacts and the contact base to a thickness of 0.2 mm or less, and are prone to deform during heat riveting and cannot be detached.
The installation groove of the contact base is used to cooperate with the elastic inverted buckle on the movable contact, and a snap structure is formed through the clamping joint, so as to achieve stable installation and convenient disassembly of the movable contact, and avoid stress deformation on the vertical surface.
It realizes a stable installation of dynamic contacts of different thicknesses to avoid deformation, and is detachable after installation, making it easy to operate.
Smart Images
Figure CN223218142U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of low-voltage electrical appliances, and in particular to a moving contact mounting structure and a switching electrical appliance. Background Art
[0002] The moving contact is the contact that moves during opening and closing operations, enabling the flow of current. To ensure the stability of the moving contact's position and prevent it from shaking during use, which could lead to poor contact, the moving contact is usually mounted on a contact holder.
[0003] The existing hot riveting process connects the moving contact to the contact base, but it is difficult to perform hot riveting on moving contacts with a thickness of 0.2 mm or less. Furthermore, the moving contact is subjected to vertical forces during hot riveting, which can easily cause deformation and makes it impossible to disassemble after hot riveting. Utility Model Content
[0004] The purpose of this application is to address the deficiencies in the above-mentioned prior art and provide a moving contact mounting structure and a switching electrical appliance, which has no restriction on the thickness of the moving contact, the moving contact is not easily deformed due to installation, and can be disassembled after installation.
[0005] To achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:
[0006] In one aspect of an embodiment of the present application, a moving contact mounting structure is provided, including: a contact seat and a moving contact, the end face of the contact seat is provided with a mounting groove, the moving contact is provided with an elastic undercut, and a snap-fit surface is provided in the mounting groove, the snap-fit surface is located on the side of the elastic undercut away from the bottom of the mounting groove and abuts against the elastic undercut.
[0007] Optionally, the moving contact has a first surface and a second surface relative to each other, the first surface is provided with a boss, a pair of ribs are provided in the mounting groove, one rib of the pair of ribs abuts against the table surface of the boss, and the other rib abuts against the second surface.
[0008] Optionally, after the elastic undercut is flattened, two opposite surfaces of the elastic undercut are flush with the first surface and the second surface respectively.
[0009] Optionally, an opening is provided on a side surface of the contact seat, and the opening exposes the elastic undercut.
[0010] Optionally, the elastic undercut automatic contact is inclined in a direction away from the bottom of the installation groove.
[0011] Optionally, a wire clamping groove is provided on the moving contact, and the wire clamping groove is located outside the contact seat, and the wire clamping groove is used to fix the wire welded on the moving contact.
[0012] Optionally, the end of the moving contact abuts against the bottom of the installation slot.
[0013] Optionally, there are two elastic undercuts, which are symmetrically arranged on two opposite sides of the boss.
[0014] Optionally, the number of the ribs is two pairs, one pair of which is located at the notch of the installation slot, and the other pair of ribs is located between the clamping surface and the bottom of the installation slot.
[0015] Another aspect of an embodiment of the present application provides a switching device, comprising a housing, a moving contact mounting structure as described above, and a static contact arranged in the housing, wherein the static contact cooperates with the moving contact of the moving contact mounting structure.
[0016] The beneficial effects of this application include:
[0017] The present application provides a moving contact mounting structure, comprising: a contact base and a moving contact, wherein the end face of the contact base is provided with a mounting groove, the moving contact is provided with an elastic undercut, and a snap-fit surface is provided in the mounting groove, the snap-fit surface being located on the side of the elastic undercut away from the bottom of the mounting groove and abutting against the elastic undercut. In the moving contact mounting structure, an elastic undercut is provided on the moving contact, and after the moving contact is installed in place, the elastic undercut and the snap-fit surface in the mounting groove form a snap-fit structure, thereby fixing the moving contact on the contact base. During the installation process, the vertical surface of the moving contact is not subjected to force, and the moving contact is not easily deformed. When disassembly is required, the moving contact can be disassembled by simply pressing down the elastic undercut to release it from the abutment with the snap-fit surface. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application 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 creative work.
[0019] Figure 1 This is one of the structural schematic diagrams of the contact installation structure provided in an embodiment of the present application;
[0020] Figure 2 The second structural diagram of the contact installation structure provided in the embodiment of the present application;
[0021] Figure 3 A partial cross-sectional view of a contact mounting structure provided in an embodiment of the present application;
[0022] Figure 4 A schematic structural diagram of a movable contact in a contact installation structure provided in an embodiment of the present application;
[0023] Figure 5 A schematic diagram of the internal structure of the switch electrical appliance provided in an embodiment of the present application.
[0024] Icons: 100-moving contact mounting structure; 110-contact seat; 111-mounting slot; 1111-slot; 1112-slot bottom; 112-clamping surface; 113-opening; 114-rib; 120-moving contact; 121-elastic undercut; 122-first surface; 123-second surface; 124-boss; 125-wire clamping slot; 200-switch electrical appliance; 210-housing; 220-static contact; A-insertion direction; B-extraction direction. DETAILED DESCRIPTION
[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application as claimed, but merely represents selected embodiments of the present application. It should be noted that, unless there is a conflict, the various features of the embodiments of the present application may be combined with each other, and the combined embodiments are still within the scope of protection of the present application.
[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.
[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the product of this application is typically placed when in use. These terms are intended only to facilitate the description of this application and simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.
[0030] To ensure the stability of the moving contact's position and prevent it from shaking during use, which could lead to poor contact, the moving contact is typically mounted on a contact holder. Existing technology typically connects the moving contact to the contact holder through hot riveting, but this process is difficult for moving contacts with a thickness of 0.2 mm or less. Furthermore, hot riveting places stress on the moving contact's vertical surface, making it susceptible to deformation. Furthermore, the contact cannot be disassembled after hot riveting.
[0031] In order to solve the above technical problems, one aspect of the embodiment of this application is to refer to Figures 1 to 3 , provides a moving contact mounting structure 100, comprising: a contact base 110 and a moving contact 120. The end surface of the contact base 110 is provided with a mounting groove 111, and the mounting groove 111 extends from the end surface of the contact base 110 to the interior of the contact base 110. The notch 1111 of the mounting groove 111 is located on the end surface of the contact base 110, and the groove bottom 1112 opposite to the notch 1111 is located inside the contact base 110. The moving contact 120 is inserted into the mounting groove 111 through the notch 1111 of the mounting groove 111. The moving contact 120 is provided with an elastic undercut 121, which is supported from the surface of the moving contact 120 toward the outside of the moving contact 120 when no external force is applied, and can move toward the moving contact 120 to approach the moving contact 120 when an external force is applied. A clamping surface 112 is provided in the installation groove 111 . After the movable contact 120 is installed in place, the clamping surface 112 is located on a side of the elastic undercut 121 away from the groove bottom 1112 of the installation groove 111 and abuts against the elastic undercut 121 .
[0032] During installation, the movable contact 120 is inserted into the mounting groove 111 from the notch 1111 of the mounting groove 111 along the insertion direction A. During the movement of the movable contact 120, the elastic undercut 121 first moves toward the movable contact 120 under the pressure of the inner wall of the mounting groove 111 and is in a deformed state. After the movable contact 120 is installed in place, the mounting groove 111 has a larger space at the location of the elastic undercut 121, causing the elastic undercut 121 to spring up in a direction away from the movable contact 120. After springing up, the elastic undercut 121 abuts against the engaging surface 112. At this time, the engaging surface 112 is located on the side of the elastic undercut 121 away from the bottom 1112 of the mounting groove 111. Therefore, the movable contact 120 cannot move in the removal direction B opposite to the insertion direction A. When the movable contact 120 needs to be removed, the elastic undercut 121 only needs to be pressed down to release the contact with the engaging surface 112 , and then the movable contact 120 can be pulled out along the pulling-out direction B.
[0033] In the aforementioned movable contact mounting structure 100, the movable contact 120 is provided with an elastic undercut 121. Once the movable contact 120 is in place, the elastic undercut 121 and the engaging surface 112 within the mounting groove 111 form a snap-fit structure, thereby securing the movable contact 120 to the contact holder 110. During installation, the vertical surface of the movable contact 120 is not subjected to stress, and the movable contact 120 is not easily deformed. To remove the movable contact 120, simply press down on the elastic undercut 121 to release it from the engaging surface 112, and the movable contact 120 can be removed.
[0034] Optionally, an opening 113 is provided on a side surface of the contact base 110 , and the opening 113 exposes the elastic undercut 121 .
[0035] The opening 113 communicates with the mounting slot 111 within the contact base 110. Once the movable contact 120 is in place, the position of the opening 113 corresponds to the position of the elastic undercut 121 on the movable contact 120, exposing the elastic undercut 121. To remove the movable contact 120, the elastic undercut 121 can be pressed down from the outside of the contact base 110 through the opening 113, and the movable contact 120 can then be pulled out. This is a simple and convenient operation.
[0036] Optionally, the end of the moving contact 120 abuts against the groove bottom 1112 of the installation groove 111 .
[0037] After the movable contact 120 is installed, the end of the movable contact 120 located in the installation groove 111 abuts against the groove bottom 1112 of the installation groove 111. At the same time, the elastic undercut 121 on the movable contact 120 also abuts against the engaging surface 112. This arrangement can prevent the movable contact 120 from moving along the insertion direction A and the extraction direction B after it is installed.
[0038] Optionally, the elastic undercut 121 and the automatic contact 120 are inclined in a direction away from the groove bottom 1112 of the installation groove 111 .
[0039] At this time, the angle between the elastic undercut 121 and the surface of the moving contact 120 is an acute angle, which can further prevent the moving contact 120 from being deformed.
[0040] Alternatively, see Figure 3 and Figure 4 The movable contact 120 has a first surface 122 and a second surface 123 facing each other. The first surface 122 is provided with a boss 124. The boss 124 arches upward from the first surface 122 of the contact 120. The top surface of the boss 124 refers to the surface of the boss 124 away from the first surface 122. A pair of ribs 114 are provided in the mounting groove 111. One rib 114 of the pair of ribs 114 abuts the top surface of the boss 124, and the other rib 114 abuts the second surface 123 of the movable contact 120. This restrains the movable contact 120 in a direction perpendicular to the insertion direction A, preventing it from shaking.
[0041] Optionally, the boss 124 is formed by the first surface 122 and the second surface 123 arching upward, and the width of the rib 114 is greater than the width of the boss 124 .
[0042] The width of the rib 114 is greater than the width of the boss 124 , which allows the rib 114 on the second surface 123 side to smoothly abut against the second surface 123 , and also increases the contact area between the moving contact 120 and the rib 114 , thereby improving the installation stability of the moving contact 120 .
[0043] Optionally, there are two pairs of ribs 114 , one pair of ribs 114 is located at the slot opening 1111 of the installation slot 111 , and the other pair of ribs 114 is located between the clamping surface 112 and the slot bottom 1112 of the installation slot 111 .
[0044] The two pairs of ribs 114 respectively limit the moving contact 120 at two positions of the moving contact 120 and are spaced a certain distance apart, so that the installation of the moving contact 120 can be more stable.
[0045] Optionally, after the elastic undercut 121 is flattened, two opposite surfaces of the elastic undercut 121 are flush with the first surface 122 and the second surface 123 , respectively.
[0046] This arrangement allows the elastic undercut 121 to more easily pass through the gap between the paired ribs 114. In addition, the elastic undercut 121 can be formed by cutting the movable contact 120 and bending the cut and separated portion upward, so that the elastic undercut 121 and the movable contact 120 are integrally formed, simplifying the processing technology.
[0047] Optionally, there are two elastic undercuts 121, which are symmetrically arranged on opposite sides of the boss 124. The two elastic undercuts 121 abut against the clamping surface 112 at the same time, so that the moving contact 120 is evenly stressed and fixed more firmly.
[0048] Optionally, a wire clamping groove 125 is provided on the moving contact 120 and is located outside the contact base 110. The wire clamping groove 125 is used to fix the wires welded on the moving contact 120, thereby preventing the wires from being broken at the spot welding point when the moving contact mounting structure 100 moves.
[0049] This embodiment also provides a switch device 200, please refer to Figure 1 and Figure 5 , including a housing 210 , a moving contact mounting structure 100 as any one of the above items, and a static contact 220 arranged in the housing 210 , the static contact 220 being matched with the moving contact 120 of the moving contact mounting structure 100 .
[0050] The switching device 200 can be an electrical device such as a shunt release, circuit breaker, or disconnector that operates by cooperating between the movable contact 120 and the stationary contact 220 to achieve opening and closing. The switching device 200 includes the same structure and benefits as the movable contact mounting structure 100 in the aforementioned embodiment. The structure and benefits of the movable contact mounting structure 100 have been described in detail in the aforementioned embodiment and will not be repeated here.
[0051] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.
Claims
1. A moving contact mounting structure, characterized in that: include: A contact seat (110) and a moving contact (120), wherein the end surface of the contact seat (110) is provided with a mounting groove (111), the moving contact (120) is provided with an elastic undercut (121), a snap-fit surface (112) is provided in the mounting groove (111), and the snap-fit surface (112) is located on a side of the elastic undercut (121) away from a groove bottom (1112) of the mounting groove (111) and abuts against the elastic undercut (121).
2. The movable contact mounting structure according to claim 1, characterized in that: The moving contact (120) has a first surface (122) and a second surface (123) relative to each other, the first surface (122) is provided with a boss (124), and a pair of ribs (114) are provided in the mounting groove (111), one of the ribs (114) in the pair of ribs (114) abuts against the table surface of the boss (124), and the other rib (114) abuts against the second surface (123).
3. The movable contact mounting structure according to claim 2, characterized in that: After the elastic undercut (121) is flattened, two opposite surfaces of the elastic undercut (121) are flush with the first surface (122) and the second surface (123), respectively.
4. The movable contact mounting structure according to claim 1, wherein: An opening (113) is provided on the side of the contact seat (110), and the opening (113) exposes the elastic undercut (121).
5. The movable contact mounting structure according to claim 1, characterized in that: The elastic undercut (121) is inclined from the moving contact (120) in a direction away from the groove bottom (1112) of the installation groove (111).
6. The moving contact mounting structure according to claim 1, wherein: The movable contact (120) is provided with a wire-holding groove (125), the wire-holding groove (125) being located outside the contact seat (110), and the wire-holding groove (125) being used to fix a wire welded on the movable contact (120).
7. The moving contact mounting structure according to claim 1, wherein: The end of the moving contact (120) abuts against the groove bottom (1112) of the installation groove (111).
8. The moving contact mounting structure according to claim 2, wherein: The number of the elastic undercuts (121) is two, and the two elastic undercuts (121) are symmetrically arranged on two opposite sides of the boss (124).
9. The movable contact mounting structure according to claim 2, wherein: The number of the ribs (114) is two pairs, one pair of the ribs (114) is located at the notch (1111) of the installation slot (111), and the other pair of the ribs (114) is located between the clamping surface (112) and the bottom (1112) of the installation slot (111).
10. A switch electrical appliance, characterized in that: The invention comprises a housing (210), a moving contact mounting structure according to any one of claims 1 to 9 and a static contact (220) arranged in the housing (210), wherein the static contact (220) cooperates with the moving contact (120) of the moving contact mounting structure (100).