Static contact assembly and isolating switch
By designing the interval settings in the static contact assembly and the elastic static contact clamping the moving contact, the problem of poor contact effect of the static contact assembly in the prior art is solved, and better contact effect and high current conduction are achieved.
Patent Information
- Application Number
- CN202421487935.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-26
- Publication Date
- 2025-05-02
- Estimated Expiration
- 2034-06-26
AI Technical Summary
The contact effect of existing static contact components is poor and it is prone to poor contact, especially under interference such as vibration.
A static contact assembly is designed, including a support member, a first static contact member and a second static contact member, the first static contact member and the second static contact member are arranged at a distance from each other to form a clamping space to clamp the moving contact member, and at least one of them is elastic to ensure a good contact effect.
The static contacts are clamped with the movable contacts at intervals, which improves the contact effect between the static contact assembly and the movable contact, reduces the poor contact problems caused by interference such as vibration, and meets the conduction needs of large currents.
Smart Images
Figure CN222826234U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of electrical equipment, and in particular to a static contact assembly and an isolating switch. Background Art
[0002] In the existing static contact assembly, a single-piece flat plate structure design is usually adopted, and one contact point or contact surface is used to contact with the moving contact. The contact effect of this static contact assembly is poor, and sometimes poor contact is prone to occur. Utility Model Content
[0003] The purpose of the present application includes providing a stationary contact assembly and an isolating switch, wherein the stationary contact assembly can maintain a good contact effect with a moving contact.
[0004] The embodiments of the present application can be implemented as follows:
[0005] In a first aspect, the present application provides a stationary contact assembly, including a support, a first stationary contact and a second stationary contact, wherein the first stationary contact and the second stationary contact are arranged on the support at intervals from each other, and a clamping space for clamping a moving contact is formed between the first stationary contact and the second stationary contact.
[0006] In an optional embodiment, at least one of the first stationary contact member and the second stationary contact member is elastic.
[0007] In an optional embodiment, the first stationary contact member and the second stationary contact member are spaced apart in the first direction, and both the first stationary contact member and the second stationary contact member are elastically deformable in the first direction.
[0008] In an optional embodiment, the first static contact member includes a first static contact body and a first guide portion, one end of the first static contact body is connected to the support member, and the other end is connected to the first guide portion; the second static contact member includes a second static contact body and a second guide portion, one end of the second static contact body is connected to the support member, and the other end is connected to the second guide portion; an opening open to the outside is formed between the first guide portion and the second guide portion, and the opening is used for inserting the moving contact member.
[0009] In an optional embodiment, the first guide portion is formed by bending the end of the first static contact member in a direction away from the second static contact member; and the second guide portion is formed by bending the end of the second static contact member in a direction away from the first static contact member.
[0010] In an optional embodiment, the first static contact body and the second static contact body are both strip-shaped and extend along a second direction, the second direction is perpendicular to the first direction, and the direction of the opening is arranged at an angle to the second direction.
[0011] In an optional embodiment, the angle between the direction of the opening and the second direction is 10° to 60°.
[0012] The first static contact body has a first extension protruding toward a third direction at one end close to the first guide portion, and the second static contact body has a second extension protruding toward a third direction at one end close to the second guide portion, the third direction is perpendicular to the first direction, the first extension and the second extension are respectively located on one side of the first static contact body and the second static contact body in the third direction, and the direction of the opening is biased toward the other side of the first static contact body and the second static contact body in the third direction;
[0013] The first extension portion and the second extension portion are spaced apart and opposed to each other in the first direction, and are used to jointly clamp the movable contact.
[0014] In an optional embodiment, the static contact assembly also includes a first elastic member and a second elastic member connected to the support member; the first elastic member abuts against a side of the first static contact member facing away from the second static contact member, and is used to apply a force to the first static contact member to deform the second static contact member; the second elastic member abuts against a side of the second static contact member facing away from the first static contact member, and is used to apply a force to the second static contact member to deform the first static contact member.
[0015] In an optional embodiment, the first elastic member includes a first fixing portion and a first elastic portion, the first fixing portion and the first static contact member are stacked and fixed to the support member through a fastener, one end of the first elastic portion is connected to the first fixing portion, and the other end abuts against the first static contact member to apply an elastic force to the first static contact member;
[0016] The second elastic member includes a second fixing portion and a second elastic portion. The second fixing portion and the second static contact member are stacked and fixed to the support member through a fastener. One end of the second elastic portion is connected to the second fixing portion, and the other end abuts against the second static contact member to apply elastic force to the second static contact member.
[0017] In an alternative embodiment, the fastener is a rivet.
[0018] In an optional embodiment, the first elastic portion includes a first elastic segment and a second elastic segment arranged at an angle, one end of the first elastic segment is connected to the first fixing portion, and the other end is connected to the second elastic segment, and one end of the second elastic segment away from the first elastic segment abuts against the first static contact member;
[0019] The second elastic portion includes a third elastic segment and a fourth elastic segment arranged at an angle, one end of the third elastic segment is connected to the second fixing portion, and the other end is connected to the fourth elastic segment, and one end of the fourth elastic segment away from the third elastic segment abuts against the second static contact.
[0020] In an optional embodiment, a first curling edge bent in a direction away from the first stationary contact member is provided at one end of the second elastic section, so that the second elastic section is in line contact or surface contact with the first stationary contact member through the first curling edge;
[0021] One end of the fourth elastic section is provided with a second curling edge bent in a direction away from the second stationary contact member, so that the fourth elastic section is in line contact or surface contact with the second stationary contact member through the second curling edge.
[0022] In an optional embodiment, the static contact assembly is applied to a switch, and the switch includes a base and a top cover that are snapped together to form a chamber. The static contact assembly is used to be arranged between the base and the top cover, and the connecting part between the first elastic segment and the second elastic segment is used to abut the top cover, and the connecting part between the third elastic segment and the fourth elastic segment is used to abut the base.
[0023] In an optional embodiment, the first elastic member and the second elastic member are both reeds.
[0024] In an optional embodiment, the support member includes a connected wiring portion and a connecting portion, one end of the first static contact and one end of the second static contact are respectively fixedly connected to opposite sides of the connecting portion, and the wiring portion is provided with a wiring hole for wiring.
[0025] In a second aspect, the present application provides an isolating switch, comprising a moving contact and a stationary contact assembly of any one of the aforementioned embodiments, wherein the moving contact can move relative to the stationary contact assembly to be clamped by a first stationary contact and a second stationary contact or to be separated from the stationary contact assembly.
[0026] In an optional embodiment, the moving contact can rotate around the rotation axis, and the disconnector also includes an arc extinguishing chamber, which forms an avoidance space for avoiding the movement path of the moving contact, and the width of the avoidance space in the extension direction of the rotation axis of the moving contact is not greater than 3 mm.
[0027] The beneficial effects of the embodiments of the present application include, for example:
[0028] The static contact assembly provided by the present application includes a support, a first static contact and a second static contact. The first static contact and the second static contact are arranged on the support at intervals, and a clamping space for clamping a moving contact is formed between the first static contact and the second static contact. Since the static contact assembly includes the first static contact and the second static contact arranged at intervals, the static contact assembly can clamp the moving contact through the first static contact and the second static contact, so as to ensure that the static contact assembly and the moving contact have a better contact effect, are not easily disturbed by vibration, etc., and improve the problem of poor contact that is easy to occur in related technologies.
[0029] The isolating switch provided in the embodiment of the present application includes a moving contact and the above-mentioned stationary contact assembly, and therefore has the advantage of good contact effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. 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 related drawings can be obtained based on these drawings without paying creative work.
[0031] Figure 1 This is a schematic diagram of an isolating switch in one embodiment of the present application;
[0032] Figure 2 This is a schematic diagram of an isolating switch with an arc extinguishing chamber hidden in an embodiment of the present application;
[0033] Figure 3 This is a schematic diagram of a static contact assembly in an embodiment of the present application at a first viewing angle;
[0034] Figure 4 This is a schematic diagram of a static contact assembly in an embodiment of the present application at a second viewing angle;
[0035] Figure 5 A schematic diagram of an arc extinguishing chamber of an isolating switch in an embodiment of the present application;
[0036] Figure 6 This is a schematic diagram of the installation of a static contact assembly in one embodiment of the present application.
[0037] Icon: 100-base; 101-notch; 200-moving contact assembly; 210-moving contact piece; 300-stationary contact assembly; 301-clamping space; 302-opening; 310-support piece; 311-wiring part; 312-wiring hole; 313-connecting part; 320-first stationary contact piece; 321-first stationary contact body; 322-first guide part; 323-first extension part; 330-second stationary contact piece; 331-second stationary contact body; 332-second guide part Toward part; 340-first elastic member; 341-first fixing part; 342-first elastic part; 343-first elastic section; 344-second elastic section; 345-first curling edge; 350-second elastic member; 351-second fixing part; 352-second elastic part; 353-third elastic section; 354-fourth elastic section; 355-second curling edge; 360-fastener; 400-arc extinguishing chamber; 410-arc extinguishing fin; 420-avoidance space; 500-top wall. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.
[0039] 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 for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.
[0040] 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, further definition and explanation thereof is not required in subsequent drawings.
[0041] In the description of the present application, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, it is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when used. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0042] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.
[0043] It should be noted that, in the absence of conflict, the features in the embodiments of the present application may be combined with each other.
[0044] The static contact in the static contact assembly in the related art adopts a single-piece flat-plate structure design, and contacts the moving contact in a single-point or single-surface manner. This contact method has poor stability and is prone to poor contact problems, especially when vibration occurs, the moving contact and the static contact assembly are easily separated. And because the contact point or area is limited, it is not conducive to excessive current. In addition, in the related art, the moving contact usually moves in a direction perpendicular to the contact surface to approach or move away from the static contact assembly, which makes the width of the moving contact often relatively large, and also causes its movement path to be relatively wide, and occupies a relatively large space. Especially when the moving contact needs to cooperate with the arc extinguishing chamber, the avoidance space of the arc extinguishing chamber needs to be set with sufficient width to avoid (or accommodate) the movement path of the moving contact, resulting in a larger size of the entire switch, which is not conducive to the miniaturization of the equipment.
[0045] In order to improve at least one of the shortcomings of the above-mentioned related technologies, the embodiment of the present application provides a static contact assembly, which provides two static contacts to support the moving contact, thereby improving the contact effect. In addition, the embodiment of the present application also provides an isolating switch, including the above-mentioned static contact assembly.
[0046] Figure 1 This is a schematic diagram of an isolating switch in one embodiment of the present application; Figure 2 This is a schematic diagram of an isolating switch after the arc extinguishing chamber 400 is hidden in one embodiment of the present application. Figure 1 and Figure 2 As shown, the isolating switch provided in the embodiment of the present application includes a base 100 and a stationary contact assembly 300, a moving contact assembly 200 and an arc extinguishing chamber 400 arranged on the base 100. The stationary contact assembly 300 is fixedly connected to the base 100, and the moving contact assembly 200 includes a moving contact 210, which can rotate along its rotation axis to connect with or separate from the stationary contact assembly 300. The arc extinguishing chamber 400 is fixedly connected to the base 100 and is spaced apart from the moving contact assembly 200 and the stationary contact assembly 300. The moving contact 210 will generate an arc in a short time after being separated from the stationary contact assembly 300, and a part of the moving contact 210 movement path is located in the arc extinguishing chamber 400, and the arc extinguishing chamber 400 is used to extinguish the arc.
[0047] In this embodiment, the moving contact assembly 200 includes two moving contacts 210, and the base 100 is provided with two stationary contact assemblies 300 and two arc extinguishing chambers 400 corresponding to the moving contacts 210. Further, the two moving contacts 210 are centrally symmetrically arranged, and the two stationary contact assemblies 300 and the two arc extinguishing chambers 400 are also centrally symmetrically arranged around the rotation axis of the moving contact 210. In other embodiments, the number of moving contacts 210, stationary contact assemblies 300 and arc extinguishing chambers 400 can be increased or decreased as needed.
[0048] Figure 3 This is a schematic diagram of a static contact assembly 300 in an embodiment of the present application at a first viewing angle; Figure 4 FIG. 3 is a schematic diagram of a static contact assembly 300 in a second viewing angle in an embodiment of the present application. Figure 3 and Figure 4As shown, the static contact assembly 300 includes a support member 310, a first static contact member 320 and a second static contact member 330. The first static contact member 320 and the second static contact member 330 are arranged on the support member 310 at intervals, and a clamping space 301 for clamping the moving contact member 210 is formed between the first static contact member 320 and the second static contact member 330. Further, at least one of the first static contact member 320 and the second static contact member 330 is elastic. Since at least one of the first static contact member 320 and the second static contact member 330 is elastic, the first static contact member 320 and the second static contact member 330 can elastically clamp the moving contact member 210 and maintain the clamping force, so that the static contact assembly 300 is in good contact with the moving contact member 210 and is not prone to poor contact due to vibration. In addition, the first stationary contact 320 and the second stationary contact 330 are both in contact with the moving contact 210, ensuring at least two contact points (or surfaces), making the contact effect more secure, and also conducive to meeting the requirements of excessive current. In other optional embodiments, the first stationary contact 320 and the second stationary contact 330 may not be elastic, but at least one of them is flexible, such as a flexible conductive sheet, and an elastic structure (such as the first elastic member 340 and the second elastic member 350 described later) is provided on the flexible conductive first stationary contact 320 and / or the second stationary contact 330 so that the two can elastically clamp the moving contact 210.
[0049] In this embodiment, the support member 310 includes a wiring portion 311 and a connecting portion 313 connected to each other, one end of the first static contact 320 and one end of the second static contact 330 are respectively fixedly connected to opposite sides of the connecting portion 313, and the wiring portion 311 is provided with a wiring hole 312, which is used for wiring. Optionally, the wiring hole 312 is a screw hole, and the support member 310 can be fixed to the base 100 by a fastener 360 such as a screw and the screw hole, and the head of the screw can clamp the wire with the wiring portion 311 to achieve wiring.
[0050] In this embodiment, the support member 310 is an integrally formed plate. According to the space arrangement requirements, the connection portion 313 is perpendicular to the first direction (the direction of the arrow ef in the figure), the connection portion 311 is perpendicular to the third direction (the direction of the arrow cd in the figure), and the third direction is perpendicular to the first direction. Figure 1 and Figure 2 As shown in , the wiring portion 311 is fixedly connected to the side wall of the notch 101 at the edge of the base 100. In other optional embodiments, the shape of the support member 310 can be changed according to installation requirements, as long as it can play the role of overcurrent and fixing the position of the static contact assembly 300.
[0051] In this embodiment, the first static contact 320 and the second static contact 330 are sheet-shaped metal pieces (such as copper sheets), and both have a certain elastic deformation capability. Specifically, the first static contact 320 and the second static contact 330 are spaced apart in the first direction, and both the first static contact 320 and the second static contact 330 can be elastically deformed in the first direction. In other embodiments, one of them may have greater rigidity (difficult to elastically deform), and the other may have elasticity.
[0052] In this embodiment, the first static contact 320 and the second static contact 330 are two separate components, while in other optional embodiments, the first static contact 320 and the second static contact 330 can be an integrated structure, for example, the two together form a U-shaped member, and the connected part of the two is connected to the connecting portion 313 of the support member 310.
[0053] In this embodiment, the first static contact member 320 includes a first static contact body 321 and a first guide portion 322, one end of the first static contact body 321 is connected to the support member 310, and the other end is connected to the first guide portion 322; the second static contact member 330 includes a second static contact body 331 and a second guide portion 332, one end of the second static contact body 331 is connected to the support member 310, and the other end is connected to the second guide portion 332. An opening 302 is formed between the first guide portion 322 and the second guide portion 332, and the opening 302 is connected to the clamping space 301. The opening 302 is used for inserting the moving contact member 210, so that the moving contact member 210 can enter the clamping space 301 and be clamped by the first static contact member 320 and the second static contact member 330.
[0054] In this embodiment, the first static contact body 321 and the second static contact body 331 are both strip-shaped (specifically, sheet-shaped) and extend along the second direction (i.e., the direction of the arrows ab in the figure), the second direction is perpendicular to the first direction, and the direction of the opening 302 is set at an angle to the second direction. It can be understood that the moving contact 210 enters the clamping space 301 through the opening 302, and in terms of spatial layout, the extension direction of the first static contact body 321 and the second static contact body 331 is not tangent to the movement trajectory of the moving contact 210. Therefore, in this embodiment, the direction of the opening 302 is set at an angle to the second direction so that the opening 302 can better face the direction of the moving contact 210 (specifically, the part of the moving contact 210 that cooperates with the static contact assembly 300, that is, the moving contact), so that the moving contact 210 can enter the clamping space 301 more smoothly under the guidance of the first guide portion 322 and the second guide portion 332. Specifically in this embodiment, the angle A between the direction of the opening 302 and the second direction is 10° to 60°. Furthermore, the direction of the opening 302 is tangent to the movement path of the moving contact 210 .
[0055] The first stationary contact body 321 and the second stationary contact body 331 may be arranged in parallel and spaced apart, so as to be in good contact with the moving contact member 210 .
[0056] Furthermore, the first static contact 320 and the second static contact 330 are integrally formed metal sheets. In this embodiment, the first guide portion 322 is formed by bending the end of the first static contact 320 in a direction away from the second static contact 330; the second guide portion 332 is formed by bending the end of the second static contact 330 in a direction away from the first static contact 320. By such an arrangement, the first static contact 320 and the second static contact 330 have good integrity, stable structure, and simple processing. In other embodiments, the first guide portion 322 can be connected to the first static contact body 321 by welding, clamping or fasteners; similarly, the second guide portion 332 can also be connected to the second static contact body 331 by welding, clamping or fasteners.
[0057] Optionally, the first stationary contact 320 and the second stationary contact 330 are fixedly connected to the connecting portion 313 by a fastener 360, and the fastener 360 may be a screw or a rivet. In this embodiment, the first stationary contact body 321 of the first stationary contact 320 and the second stationary contact body 331 of the second stationary contact 330 are connected to the connecting portion 313 by two rivets. In other embodiments, the first stationary contact 320 and the second stationary contact 330 may also be connected to the connecting portion 313 of the support member 310 by welding.
[0058] In this embodiment, one end of the first static contact body 321 close to the first guide portion 322 has a third direction ( Figure 4 The first extension 323 and the second extension are respectively located on one side of the first static contact body 321 and the second static contact body 331 in the third direction (such as the first direction). Figure 4 The opening 302 is oriented toward the other side of the first static contact body 321 and the second static contact body 331 in the third direction (eg, Figure 4 The first extension portion 323 and the second extension portion are spaced apart from each other in the first direction and are used to clamp the movable contact 210 together. By providing the first extension portion 323 and the second extension portion, the clamping surface of the first static contact body 321 and the second static contact body 331 is increased, so that the movable contact 210 can be clamped more stably after entering the clamping space 301 through the opening 302.
[0059] In this embodiment, the stationary contact assembly 300 further includes a first elastic member 340 and a second elastic member 350 connected to the support member 310. The first elastic member 340 abuts against the side of the first stationary contact 320 away from the second stationary contact 330, and is used to apply a force to the first stationary contact 320 to deform the second stationary contact 330; the second elastic member 350 abuts against the side of the second stationary contact 330 away from the first stationary contact 320, and is used to apply a force to the second stationary contact 330 to deform the first stationary contact 320. It can be understood that in this embodiment, the first stationary contact 320 and the second stationary contact 330 are set to a strip-shaped structure of a certain length, which can form a larger clamping surface, thereby improving the conductive effect. However, the long length of the two stationary contacts may cause the clamping force to become weak, and by providing the first elastic member 340 and the second elastic member 350, the clamping force can be assisted to improve, so that even if the first stationary contact 320 and the second stationary contact 330 are long in length, they can still maintain good contact.
[0060] In this embodiment, the first elastic member 340 and the second elastic member 350 are both integrally formed spring sheets. Specifically, the first elastic member 340 includes a first fixing portion 341 and a first elastic portion 342, the first fixing portion 341 and the first static contact 320 are stacked and fixed to the support member 310 through a fastener 360. One end of the first elastic portion 342 is connected to the first fixing portion 341, and the other end abuts against the first static contact 320 to apply an elastic force to the first static contact 320. Similarly, the second elastic member 350 includes a second fixing portion 351 and a second elastic portion 352, the second fixing portion 351 and the second static contact 330 are stacked and fixed to the support member 310 through a fastener 360, and one end of the second elastic portion 352 is connected to the second fixing portion 351, and the other end abuts against the second static contact 330 to apply an elastic force to the second static contact 330.
[0061] In this embodiment, the first fixing portion 341 is stacked with the first static contact body 321 of the first static contact member 320, and the first static contact body 321 is located between the connecting portion 313 and the first fixing portion 341. The second fixing portion 351 is stacked with the second static contact body 331 of the second static contact member 330, and the second static contact body 331 is located between the connecting portion 313 and the second fixing portion 351. The fastener 360 is a rivet, and two rivets rivet the first fixing portion 341, the first static contact body 321, the second fixing portion 351, the second static contact body 331 and the connecting portion 313 together. In other embodiments, the first elastic member 340 and the second elastic member 350 can also be fixed by bonding, welding, etc.
[0062] In this embodiment, the first elastic portion 342 includes a first elastic segment 343 and a second elastic segment 344 arranged at an angle, one end of the first elastic segment 343 is connected to the first fixed portion 341, and the other end is connected to the second elastic segment 344, and one end of the second elastic segment 344 away from the first elastic segment 343 abuts against the first static contact 320. The second elastic portion 352 includes a third elastic segment 353 and a fourth elastic segment 354 arranged at an angle, one end of the third elastic segment 353 is connected to the second fixed portion 351, and the other end is connected to the fourth elastic segment 354, and one end of the fourth elastic segment 354 away from the third elastic segment 353 abuts against the second static contact 330. As shown in the figure, the first elastic portion 342 and the second elastic portion 352 respectively form an arch structure, and apply force to the first static contact 320 and the second static contact 330 through the second elastic segment 344 and the fourth elastic segment 354 respectively. In this embodiment, the second elastic section 344 and the fourth elastic section 354 are respectively in contact with the first static contact body 321 and the second static contact body 331. In order to avoid the sharp edge abutting the first static contact body 321 and the second static contact body 331, resulting in stress concentration and scratching the first static contact body 321 and the second static contact body 331, in this embodiment, the ends of the second elastic section 344 and the fourth elastic section 354 are provided with curling edges, so as to achieve line contact or surface contact. Specifically, one end of the second elastic section 344 is provided with a first curling edge 345 bent in a direction away from the first static contact member 320, so that the second elastic section 344 is in line contact or surface contact with the first static contact member 320 through the first curling edge 345; one end of the fourth elastic section 354 is provided with a second curling edge 355 bent in a direction away from the second static contact member 330, so that the fourth elastic section 354 is in line contact or surface contact with the second static contact member 330 through the second curling edge 355. By providing the first curling edge 345 and the second curling edge 355, the first static contact 320 and the second static contact 330 are abutted by the rounded corners formed by the curling edges to form a line contact or a surface contact. In this way, even if the hardness of the first elastic member 340 is greater than that of the first static contact 320 and the hardness of the second elastic member 350 is greater than that of the second static contact 330, the first static contact 320 and the second static contact 330 are not easily cut and lose the ability to elastically deform and reset.
[0063] In other optional embodiments, the first elastic member 340 and the second elastic member 350 may also adopt other structural forms such as compression springs and torsion springs, as long as they can provide elastic squeezing force to the first static contact member 320 and the second static contact member 330 so that the two have a tendency to approach each other.
[0064] In the present embodiment, the moving contact 210 partially enters the clamping space 301 by rotating, and is clamped by the first static contact 320 and the second static contact 330, thereby achieving circuit conduction. At this time, the moving contact 210 is clamped so that it has good contact and is not easily loosened due to vibration. In addition, the moving contact 210 and the static contact assembly 300 have many contact points and a large contact surface, which can meet the requirements of passing large currents. In the present embodiment, the moving contact 210 is sheet-shaped, and its movement direction is perpendicular to the contact surface used for conduction. Therefore, the moving contact 210 can have a narrower movement path, and the width of the movement path is also the thickness of the sheet-shaped moving contact 210.
[0065] Figure 5 FIG. 4 is a schematic diagram of an arc extinguishing chamber 400 of an isolating switch in one embodiment of the present application. Figure 5 As shown, in the embodiment of the present application, the arc extinguishing chamber 400 includes a plurality of arc extinguishing fins 410, and the arc extinguishing chamber 400 also has an escape space 420 adjacent to the arc extinguishing fins 410, and the escape space 420 is used to accommodate the end of the moving contact 210 (i.e., the moving contact) after the moving contact 210 is separated from the static contact. In other words, the escape space 420 is used to avoid the movement path of the moving contact 210. After the moving contact 210 is separated from the static contact assembly 300 due to excessive current, it will rotate into the escape space 420 of the arc extinguishing chamber 400, and the arc formed between the moving contact 210 and the static contact assembly 300 will also move toward the arc extinguishing fins 410 under the action of the narrow gap, and finally be cut off and eliminated, so as to achieve arc extinguishing. In the embodiment of the present application, since the static contact assembly 300 forms a clamping space 301, the moving contact 210 can adopt a sheet structure with a thinner size, and the space swept during movement is smaller. Correspondingly, the width W of the avoidance space 420 in the extension direction of the rotation axis of the moving contact 210 can also be set smaller, such as not more than 3mm, and the narrowest can be set to 1.2mm. The narrower avoidance space 420 can enhance the slit effect, better guide the arc to move toward the arc extinguishing fin 410, and improve the arc extinguishing effect.
[0066] Figure 6 FIG. 1 is a schematic diagram of the installation of a static contact assembly 300 in an embodiment of the present application. Figure 6As shown, in the embodiment of the present application, the isolating switch may also have a top wall 500, and a receiving cavity is formed between the top wall 500 and the base 100 to accommodate components such as the static contact assembly 300, the moving contact assembly 200, and the arc extinguishing chamber 400. Optionally, the base 100 and the top wall 500 may abut against the first elastic member 340 and the second elastic member 350 respectively, so that the first elastic member 340 and the second elastic member 350 can apply greater pressure to the first static contact 320 and the second static contact 330, thereby increasing the clamping force on the moving contact 210 and improving the contact effect. Specifically, the connection portion between the first elastic segment 343 of the first elastic portion 342 and the second elastic segment 344 is used to abut against the top wall 500, and the connection portion between the third elastic segment 353 of the second elastic portion 352 and the fourth elastic segment 354 is used to abut against the base 100.
[0067] The top wall 500 may be formed by the top cover of the isolating switch, that is, the top wall 500 and the base 100 are buckled together to form a chamber, and the static contact assembly 300 is arranged in the chamber. The top wall 500 may also be formed by the base 100 of another isolating switch arranged in an overlapping manner.
[0068] In summary, the static contact assembly 300 provided by the present application includes a support member 310, a first static contact member 320 and a second static contact member 330. The first static contact member 320 and the second static contact member 330 are arranged on the support member 310 at intervals. A clamping space 301 for clamping the moving contact member 210 is formed between the first static contact member 320 and the second static contact member 330. At least one of the first static contact member 320 and the second static contact member 330 has elasticity. Since the static contact assembly 300 includes the first static contact member 320 and the second static contact member 330 arranged at intervals, and at least one of them has elasticity, the static contact assembly 300 can clamp the moving contact member 210 through the first static contact member 320 and the second static contact member 330, and continuously provide clamping force during the clamping cooperation, so as to ensure that the static contact assembly 300 has a better contact effect with the moving contact member 210, is not easily disturbed by vibration, etc., and improves the problem of poor contact that is easy to occur in the related art.
[0069] The isolating switch provided in the embodiment of the present application includes the moving contact 210 and the above-mentioned stationary contact assembly 300, and therefore has the advantage of good contact effect.
[0070] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.
Claims
1. A stationary contact assembly, characterized in that: The invention comprises a support member (310), a first stationary contact member (320) and a second stationary contact member (330), wherein the first stationary contact member (320) and the second stationary contact member (330) are arranged on the support member (310) at intervals, and a clamping space (301) for clamping a moving contact member (210) is formed between the first stationary contact member (320) and the second stationary contact member (330).
2. The stationary contact assembly according to claim 1, characterized in that: At least one of the first stationary contact member (320) and the second stationary contact member (330) has elasticity.
3. The stationary contact assembly according to claim 2, characterized in that: The first stationary contact member (320) and the second stationary contact member (330) are arranged at intervals in a first direction, and both the first stationary contact member (320) and the second stationary contact member (330) are capable of elastic deformation in the first direction.
4. The stationary contact assembly according to claim 3, characterized in that: The first static contact member (320) includes a first static contact body (321) and a first guide portion (322), one end of the first static contact body (321) is connected to the support member (310), and the other end is connected to the first guide portion (322); the second static contact member (330) includes a second static contact body (331) and a second guide portion (332), one end of the second static contact body (331) is connected to the support member (310), and the other end is connected to the second guide portion (332); an opening (302) open to the outside is formed between the first guide portion (322) and the second guide portion (332), and the opening (302) is used for inserting the moving contact member (210).
5. The stationary contact assembly according to claim 4, characterized in that: The first guide portion (322) is formed by bending the end portion of the first static contact (320) in a direction away from the second static contact (330); and the second guide portion (332) is formed by bending the end portion of the second static contact (330) in a direction away from the first static contact (320).
6. The stationary contact assembly according to claim 4, characterized in that: The first static contact body (321) and the second static contact body (331) are both strip-shaped and extend along a second direction, the second direction is perpendicular to the first direction, and the direction of the opening (302) is arranged at an angle to the second direction.
7. The stationary contact assembly according to claim 6, characterized in that: The angle between the orientation of the opening (302) and the second direction is 10° to 60°.
8. The stationary contact assembly according to claim 6, characterized in that: The first static contact body (321) has a first extension portion (323) protruding in a third direction at one end close to the first guide portion (322), and the second static contact body (331) has a second extension portion protruding in the third direction at one end close to the second guide portion (332), the third direction is perpendicular to the first direction and the second direction, the first extension portion (323) and the second extension portion are respectively located on one side of the first static contact body (321) and the second static contact body (331) in the third direction, and the opening (302) is oriented toward the other side of the first static contact body (321) and the second static contact body (331) in the third direction; The first extension portion (323) and the second extension portion are spaced apart from each other in the first direction and are used to jointly clamp the movable contact member (210).
9. The stationary contact assembly according to any one of claims 1 to 8, characterized in that: The stationary contact assembly (300) further comprises a first elastic member (340) and a second elastic member (350) connected to the support member (310); the first elastic member (340) abuts against a side of the first stationary contact member (320) facing away from the second stationary contact member (330), and is used to apply a force to the first stationary contact member (320) to deform the second stationary contact member (330); the second elastic member (350) abuts against a side of the second stationary contact member (330) facing away from the first stationary contact member (320), and is used to apply a force to the second stationary contact member (330) to deform the first stationary contact member (320).
10. The stationary contact assembly according to claim 9, characterized in that: The first elastic member (340) comprises a first fixing portion (341) and a first elastic portion (342); the first fixing portion (341) and the first static contact member (320) are stacked and fixed to the support member (310) via a fastener (360); one end of the first elastic portion (342) is connected to the first fixing portion (341), and the other end abuts against the first static contact member (320) to apply an elastic force to the first static contact member (320); The second elastic member (350) comprises a second fixing portion (351) and a second elastic portion (352); the second fixing portion (351) and the second static contact member (330) are stacked and fixed to the support member (310) via a fastener (360); one end of the second elastic portion (352) is connected to the second fixing portion (351), and the other end abuts against the second static contact member (330) to apply an elastic force to the second static contact member (330).
11. The stationary contact assembly according to claim 10, characterized in that: The fastener (360) is a rivet.
12. The stationary contact assembly according to claim 10, characterized in that: The first elastic portion (342) comprises a first elastic section (343) and a second elastic section (344) which are arranged at an angle, one end of the first elastic section (343) is connected to the first fixing portion (341), and the other end is connected to the second elastic section (344), and one end of the second elastic section (344) away from the first elastic section (343) abuts against the first static contact member (320); The second elastic portion (352) comprises a third elastic segment (353) and a fourth elastic segment (354) which are arranged at an angle, one end of the third elastic segment (353) is connected to the second fixed portion (351), and the other end is connected to the fourth elastic segment (354), and one end of the fourth elastic segment (354) away from the third elastic segment (353) abuts against the second static contact member (330).
13. The stationary contact assembly according to claim 12, characterized in that: One end of the second elastic section (344) is provided with a first curling edge (345) bent in a direction away from the first static contact member (320), so that the second elastic section (344) is in line contact or surface contact with the first static contact member (320) through the first curling edge (345); One end of the fourth elastic section (354) is provided with a second curling edge (355) bent in a direction away from the second static contact member (330), so that the fourth elastic section (354) is in line contact or surface contact with the second static contact member (330) through the second curling edge (355).
14. The stationary contact assembly according to claim 12, characterized in that: The stationary contact assembly is applied to a switch, and the switch comprises a base (100) and a top cover which are interlocked to form a chamber, and the stationary contact assembly is used to be arranged between the base (100) and the top cover, and the connection portion between the first elastic segment (343) and the second elastic segment (344) is used to abut against the top cover, and the connection portion between the third elastic segment (353) and the fourth elastic segment (354) is used to abut against the base (100).
15. The stationary contact assembly according to any one of claims 1 to 8, characterized in that: The support member (310) comprises a wiring portion (311) and a connecting portion (313) connected to each other, one end of the first static contact member (320) and one end of the second static contact member (330) are respectively fixedly connected to opposite sides of the connecting portion (313), and the wiring portion (311) is provided with a wiring hole (312), and the wiring hole (312) is used for wiring.
16. An isolating switch, characterized in that: The invention comprises a moving contact (210) and a stationary contact assembly (300) as described in any one of claims 1 to 15, wherein the moving contact (210) can move relative to the stationary contact assembly (300) to be clamped by the first stationary contact (320) and the second stationary contact (330) or to be separated from the stationary contact assembly (300).
17. The isolating switch according to claim 16, characterized in that: The moving contact (210) can rotate around the rotation axis, and the disconnector also includes an arc extinguishing chamber (400), the arc extinguishing chamber (400) forms an avoidance space (420) for avoiding the movement path of the moving contact (210), and the width of the avoidance space (420) in the extension direction of the rotation axis of the moving contact (210) is not greater than 3 mm.