Switch contact
By adopting the design of movable contacts and static contacts in the isolating switch, the clamping force is provided by connecting the elastic rod with the mounting shaft, which solves the problem of excessive internal resistance of the contact, improves the current carrying capacity and temperature rise performance, and reduces production costs.
Patent Information
- Application Number
- CN202422055111.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-09-02
- Estimated Expiration
- 2034-08-23
AI Technical Summary
The internal resistance of the dynamic contact and static contact of the existing isolating switch is too high, resulting in a reduced current carrying capacity and temperature rise performance. In the prior art, increasing the conductor cross-sectional area or increasing the clamping force has problems such as high cost and complex assembly.
The movable contact is composed of a first contact and a second contact, and the first elastic rod and the second elastic rod are connected by a mounting shaft to provide clamping force, so that the movable contact and the static contact are in close contact, and the internal resistance of the contact is reduced.
It reduces the internal resistance of the isolating switch, enhances the current carrying capacity and temperature rise performance, and saves material costs and is simple in structure and easy to install.
Smart Images
Figure CN223296671U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electrical technology, in particular to a switch contact. Background Art
[0002] Isolating switches have the function of isolating power supply and disconnecting circuit. With the rapid development of photovoltaic field, isolating switches have also been widely used. In recent years, higher and higher requirements have been put forward for the current carrying capacity and temperature rise performance of isolating switches.
[0003] The isolating switch includes a switch contact, wherein the switch contact further includes a moving contact and a static contact. The circuit is disconnected and connected by opening and closing the moving contact and the static contact. In the prior art, the contact internal resistance of the moving contact and the static contact is too high, thereby increasing the internal resistance of the switch, resulting in a decrease in the current carrying capacity and temperature rise performance of the isolating switch. One way to reduce the contact internal resistance is to increase the cross-sectional area of the conductor, and another way is to increase the clamping force between the moving contact and the static contact to ensure reliable contact between the moving contact and the static contact. In the prior art, an elastic sheet is usually used to act on the moving contact to increase the clamping force between the moving contact and the static contact. This has the problem of high cost and complex assembly. In addition, the fixing of the elastic sheet is relatively complicated and there is a problem of easy displacement. Utility Model Content
[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a switch contact with low contact internal resistance, which is suitable for isolating switches.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] The present application provides a switch contact, including a movable contact, wherein the movable contact includes a first contact and a second contact, wherein the first contact is integrally formed and includes a first main body and two first extensions respectively connected to both ends of the first main body, and the second contact is integrally formed and includes a second main body and two second extensions respectively connected to both ends of the second main body, wherein the first main body and the second main body are arranged opposite to each other, and the two first extensions are respectively arranged opposite to the two second extensions to form a clamping gap at both ends of the movable contact for clamping a stationary contact.
[0007] The moving contact also includes a first elastic rod, a second elastic rod and a mounting shaft, the first elastic rod and the second elastic rod are respectively arranged on the two opposite sides of the first contact and the second contact, the two ends of the first elastic rod are respectively connected to the first extension parts at the two ends of the first contact, and the two ends of the second elastic rod are respectively connected to the second extension parts at the two ends of the second contact; the first main body and the second main body are provided with a second mounting hole, the mounting shaft passes through the second mounting hole, one end is connected to the first elastic rod, and the other end is connected to the second elastic rod, locking the first elastic rod and the second elastic rod to the two opposite sides of the first contact and the second contact.
[0008] In a possible implementation, third mounting holes are formed at both ends of the mounting shaft, and the first elastic rod and the second elastic rod pass through the third mounting holes.
[0009] In a possible implementation, at least one of the third mounting holes is provided with an opening structure to form a first limiting groove.
[0010] In one possible implementation, one end of the mounting shaft is a first limiting groove, and the other end is a third mounting hole. One of the first elastic rod and the second elastic rod passes through the third mounting hole, and the other of the first elastic rod and the second elastic rod is clamped in the first limiting groove.
[0011] In a possible implementation, at least one end of the first elastic rod and the second elastic rod is a bent portion, and a first mounting hole corresponding to the bent portion is provided on the first extension portion of the first contact and the second extension portion of the second contact.
[0012] In one possible implementation, a bent portion is provided at both ends of the first elastic rod and the second elastic rod, and a first mounting hole is provided in the first extension portion at both ends of the first contact and the second extension portion at both ends of the second contact. The first elastic rod is inserted into the first mounting hole of the first extension portion through the bent portions at both ends, and the second elastic rod is inserted into the first mounting hole of the second extension portion through the bent portions at both ends.
[0013] In one possible implementation, the length direction of the moving contact is the first direction, the width direction is the second direction, and the thickness direction is the third direction. The first elastic rod and the second elastic rod are symmetrical along the plane surrounded by the first direction and the second direction; the first elastic rod and the second elastic rod are both integrally formed, and each includes a first section, two second sections respectively connected to the two ends of the first section, and two third sections respectively connected to the two second sections. The first section of the first elastic rod is parallel to the first direction, the two second sections are bent along the third direction toward the moving contact, and the two third sections are bent in opposite directions along the second direction. The third sections at both ends of the first elastic rod are respectively against the first extensions at both ends of the first contact, and the third sections at both ends of the second elastic rod are respectively against the second extensions at both ends of the second contact.
[0014] In one possible implementation, the connection between the first main body and the first extension is a bending structure, and the first main body is parallel to the first extension; the connection between the second main body and the second extension is a bending structure, and the second main body is parallel to the second extension, the first main body is tightly attached to the second main body, and there is a clamping gap between the first extension and the second extension. The part of the first elastic rod connected between the two first extensions is a straight rod, and there is a deformation gap between it and the first main body. The part of the second elastic rod connected between the two second extensions is a straight rod, and there is a deformation gap between it and the second main body.
[0015] In one possible implementation, the first main body and the two first extensions are in the same plane; the second main body and the two second extensions are in the same plane, a boss is provided in the middle of the mounting shaft, and the boss is located between the first main body and the second main body, so that the first main body and the second main body are spaced apart, and the two first extensions are spaced apart relative to the two second extensions, respectively, to form a clamping gap at both ends of the moving contact.
[0016] In one possible implementation, the side protrusions of the first extension portion of the first contact and the second extension portion of the second contact are provided with arc-shaped protrusions, and the arc-shaped protrusions of the first extension portion and the arc-shaped protrusions of the second extension portion are arranged opposite to each other and the distance between them is greater than the distance of the clamping gap between the first extension portion and the second extension portion.
[0017] The switch contact of the present invention adopts a first elastic rod to act on the two first extensions of the first contact, and a second elastic rod to act on the two second extensions of the second contact, so as to improve the clamping force of the moving contact and the static contact. Compared with the existing elastic parts, most of them obtain the clamping force by supporting, pressing or resisting the contacts, thereby applying a clamping force to the moving contact. The present application uses a mounting shaft to pass through the middle of the first contact and the second contact, one end of which is connected to the first elastic rod, and the other end is connected to the second elastic rod, to apply a clamping force to the first elastic rod and the second elastic rod, so that the first elastic rod and the second elastic rod are elastically deformed, acting on the first contact and the second contact to make them fit inwardly. This method can reliably fix the position of the first contact and the second contact so that they will not shift.
[0018] Limiting and fixing the first elastic rod, the second elastic rod, the first contact and the second contact by the mounting shaft not only increases the contact area between the static contact and the moving contact, thereby reducing the contact internal resistance, thereby reducing the internal resistance of the disconnector and enhancing the current carrying capacity and temperature rise performance of the disconnector, but also the first elastic rod and the second elastic rod are elastic components of a rod-shaped structure, which not only saves materials and reduces production costs, but also provides better elasticity, is easy to match with the mounting shaft for installation and locking, and is simpler and more convenient.
[0019] Furthermore, a third mounting hole is provided on the mounting shaft, through which the first and second elastic rods are secured, preventing displacement of the first and second elastic rods. The mounting shaft and the mounting hole can conveniently and simultaneously secure the first and second elastic rods, the first and second contacts, resulting in a simple structure. Furthermore, the third mounting hole has an opening structure, forming a first retaining groove, which allows for snap-fitting and securing the middle portion of the first and / or second elastic rods, making installation and operation easy.
[0020] In addition, by providing a first mounting hole on the first contact and the second contact, a bending portion is provided on the first elastic rod and the second elastic rod, and the bending portion is plugged into and matched with the first mounting hole to limit the movement of the first elastic rod and the second elastic rod in the first direction and the second direction, the stability of the connection between the first elastic rod and the second elastic rod and the first contact and the second contact can be improved, the structure is symmetrical, and the workmanship is beautiful. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1a and Figure 1b This is a structural diagram of the first embodiment of the movable contact of the utility model;
[0022] Figure 2a and Figure 2b This is a schematic structural diagram of the first contact and the second contact in the first embodiment of the movable contact of the utility model;
[0023] Figure 3a and Figure 3b This is a structural diagram of two embodiments of the mounting shaft of the utility model;
[0024] Figure 4a and Figure 4b It is a structural schematic diagram of two embodiments of the first elastic rod and the second elastic rod of the utility model;
[0025] Figure 5a and Figure 5b This is a structural diagram of the second embodiment of the movable contact of the utility model;
[0026] Figure 6a and Figure 6b This is a schematic structural diagram of the first contact and the second contact in the second embodiment of the movable contact of the present utility model;
[0027] In the figure: moving contact 100; first contact 1; second contact 2; first elastic rod 3; second elastic rod 4; locking member 5; mounting shaft 51; first main body 11; first extension portion 12; second main body 21; second extension portion 22; second mounting hole 62; third mounting hole 512; first limiting groove 511; bending portion 41; first mounting hole 61; first section 31; second section 32; third section 33; boss 513; arc-shaped protrusion 13. DETAILED DESCRIPTION
[0028] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the present invention. The protection scope of the present invention is not limited to the description of the following embodiments.
[0029] The isolating switch includes a shell and internal switch contacts, the shell includes a base, the switch contacts include a moving contact 100 and two static contacts, the moving contact 100 and the static contact are installed on the base, the static contact is fixedly installed on the base, the moving contact 100 can be rotatably installed in the base, and is connected and disconnected with the static contact by rotation. The moving contact 100 is a long plate-shaped structure, with a rotating arrangement in the middle and a clamping gap at both ends. The moving contact 100 is clamped and connected with the two static contacts through the clamping gap at both ends. When the moving contact 100 rotates to a certain angle, its two ends can contact and close with the two static contacts to achieve circuit conduction. The moving contact 100 rotates again to disconnect from the two static contacts to achieve circuit disconnection. The isolating switch is usually connected in series in the circuit, and the conduction and disconnection of the circuit are controlled by connecting and disconnecting the moving contact 100 with the two static contacts.
[0030] For example, Figure 1a and Figure 1b The structure diagram of the movable contact 100 in the switch contact of the present application is shown, wherein: Figure 1a The moving contact 100 after the components are installed. Figure 1b The moving contact 100 before each component is installed, such as Figure 1a and Figure 1b As shown, the moving contact 100 includes a first contact 1, a second contact 2, a first elastic rod 3, a second elastic rod 4 and a locking member 5. The first contact 1 and the second contact 2 are both integrally formed. The first contact 1 and the second contact 2 are arranged opposite to each other. The first contact 1 includes a first main body 11 and two first extensions 12 respectively connected to the two ends of the first main body 11. The second contact 2 includes a second main body 21 and two second extensions 22 respectively connected to the two ends of the second main body 21. The first main body 11 and the second main body 21 are arranged opposite to each other, and the two first extensions 12 are respectively spaced apart from the two second extensions 22 to form a clamping gap at both ends of the moving contact 100. The clamping gap is used to accommodate the static contact.
[0031] The locking member 5 is a mounting shaft 51. The two ends of the first elastic rod 3 are respectively connected to the first extensions 12 at the two ends of the first contact 1, and the two ends of the second elastic rod 4 are respectively connected to the second extensions 22 at the two ends of the second contact 2. The first elastic rod 3 and the second elastic rod 4 are respectively arranged on the two opposite sides of the first contact 1 and the second contact 2 to provide an inward clamping force for the first contact 1 and the second contact 2.
[0032] The first main body portion 11 and the second main body portion 21 are provided with a second mounting hole 62, and the mounting shaft 51 passes through the second mounting hole 62, with one end connected to the first elastic rod 3 and the other end connected to the second elastic rod 4, so that the first elastic rod 3 and the second elastic rod 4 are locked to the opposite sides of the first contact 1 and the second contact 2, so that the first contact 1 and the second contact 2 are stacked and fixed along the third direction of the moving contact 100. The mounting shaft 51 causes the first elastic rod 3 and the second elastic rod 4 to deform, providing an inward-fitting clamping force for the first contact 1 and the second contact 2 in the third direction, thereby fixing them.
[0033] The length direction of the moving contact 100 is the first direction, the width direction is the second direction, and the thickness direction is the third direction.
[0034] The switch contact of the present invention adopts a first elastic rod 3 to act on the two first extensions 12 of the first contact 1, and a second elastic rod 4 to act on the two second extensions 22 of the second contact 2, so as to improve the clamping force between the moving contact 100 and the static contact. Compared with the existing elastic parts, most of them obtain the clamping force by supporting, pressing or resisting the contacts, thereby applying a clamping force to the moving contact 100. The present application uses a mounting shaft 51 to pass through the middle of the first contact 1 and the second contact 2, one end of which is connected to the first elastic rod 3 and the other end of which is connected to the second elastic rod 4, to apply a clamping force to the first elastic rod 3 and the second elastic rod 4, so that the first elastic rod 3 and the second elastic rod 4 are elastically deformed, acting on the first contact 1 and the second contact 2 to make them fit inwardly. This method can reliably fix the positions of the first contact 1 and the second contact 2 so that they will not shift.
[0035] The first elastic rod 3, the second elastic rod 4, the first contact 1 and the second contact 2 are limited and fixed by the mounting shaft 51, which not only increases the contact area between the static contact and the movable contact 100, thereby reducing the internal contact resistance, thereby reducing the internal resistance of the disconnector and enhancing the current carrying capacity and temperature rise performance of the disconnector, but also the first elastic rod 3 and the second elastic rod 4 are elastic components of a rod-shaped structure, which not only saves materials and reduces production costs, but also provides better elasticity and is easy to cooperate with the mounting shaft 51 for installation and locking, which is simpler and more convenient.
[0036] Preferably, third mounting holes 512 are provided at both ends of the mounting shaft 51, and the first elastic rod 3 and the second elastic rod 4 are fixed through the third mounting holes 512, so that the first elastic rod 3 and the second elastic rod 4 will not be displaced. The mounting shaft 51 is used to conveniently fix the first elastic rod 3, the second elastic rod 4, the first contact 1 and the second contact 2 at the same time by using the shaft hole, and the structure is simple.
[0037] Furthermore, at least one of the third mounting holes 512 of the mounting shaft 51 is provided with an opening structure to form a first limiting groove 511. The first limiting groove 511 facilitates the installation and fixation of the mounting shaft 51 and the first elastic rod 3 and the second elastic rod 4.
[0038] Further, Figure 3a A schematic structural diagram of an embodiment of the mounting shaft 51 in the movable contact 100 of the present application is shown. Figure 1b and Figure 3a As shown, one end of the mounting shaft 51 is formed into a first retaining groove 511, and the other end is formed into a third mounting hole 512. One of the first elastic rod 3 and the second elastic rod 4 passes through the third mounting hole 512, and the other of the first elastic rod 3 and the second elastic rod 4 is engaged in the first retaining groove 511. By providing the third mounting hole 512 at one end of the mounting shaft 51, one end of the second elastic rod 4 is inserted therein to prevent it from falling out. The other end is provided with the first retaining groove 511, which allows the first elastic rod 3 to be engaged and locked, ensuring secure installation and simple operation.
[0039] Further, Figure 3b FIG. 1 shows a structural diagram of another embodiment of the mounting shaft 51 in the movable contact 100 of the present application. Figure 3b As shown, first limiting grooves 511 are provided at both ends of the mounting shaft 51, and the first limiting grooves 511 are arranged opposite to each other in the second direction. A boss 513 is provided in the middle of the mounting shaft 51, which is used to be spaced between the first main body portion 11 and the second main body portion 21, so that the first main body portion 11 and the second main body portion 21 are spaced apart, and the two first extension portions 12 are respectively spaced apart from the two second extension portions 22, forming a clamping gap at both ends of the moving contact 100. In this embodiment, the bosses 513 are arranged opposite to each other in the second direction.
[0040] By providing first limiting grooves 511 at both ends of the mounting shaft 51, the middle portions of the first elastic rod 3 and the second elastic rod 4 can be engaged and fixed, causing them to elastically deform, thereby generating an inwardly fitting clamping force on the first contact 1 and the second contact 2. Providing a boss 513 in the middle portion of the mounting shaft 51 can create a clamping gap between the first contact 1 and the second contact 2, which is used for clamping and connecting with the static contact. Simultaneously, the boss 513 can also limit the first contact 1 and the second contact 2 in the third direction, preventing the first contact 1 and the second contact 2 from swaying in the third direction, thereby causing deviation and causing the clamping gap between the first contact 1 and the second contact 2 to be too small or too large, thereby failing to match the static contact for clamping and electrically connecting. In other embodiments, bosses 513 can also be provided in opposite directions in the first and second directions in the middle portion of the mounting shaft 51 to improve the stability of the first contact 1 and the second contact 2 in the third direction. Such arrangements fall within the scope of protection of this application.
[0041] Preferably, the first elastic rod 3 and the second elastic rod 4 are elastic rods with a bending structure, at least one end of the first elastic rod 3 and the second elastic rod 4 is a bending portion 41, and the first extension portion 12 of the first contact 1 and the second extension portion 22 of the second contact 2 are provided with a first mounting hole 61 corresponding to the bending portion 41.
[0042] The bent portion 41 is preferably a right angle. Of course, in some inferior embodiments, the bent portion 41 can also be other angles, such as an obtuse angle or an acute angle. Of course, the bent portions 41 at both ends of the first elastic rod 3 and the second elastic rod 4 can also be various combinations of acute angles, obtuse angles and right angles. Examples are not given here one by one, and all fall within the scope of protection of this application. In addition, in a preferred embodiment, the length of the bent portion 41 in the third direction should not exceed the thickness of the first contact 1 and the second contact 2 to avoid the protrusion of the bent portion 41 blocking the static contact, so that the static contact cannot enter the clamping gap at both ends of the moving contact 100, cannot achieve a clamping connection with the moving contact, or cannot achieve a good clamping connection, affecting the normal power supply of the circuit.
[0043] Preferably, Figure 4a As shown, the first elastic rod 3 and the second elastic rod 4 have the same structure, one end of the first elastic rod 3 and the second elastic rod 4 is a bent portion 41, the first extension portion 12 on one side of the first contact 1 is provided with a first mounting hole 61, and the second extension portion 22 at the other end of the second contact 2 relative to the first mounting hole 61 is also provided with a first mounting hole 61, the bent portions 41 at one end of the first elastic rod 3 and the second elastic rod 4 are respectively inserted into their corresponding first mounting holes 61, and the other ends of the first elastic rod 3 and the second elastic rod 4 are respectively against the corresponding first extension portion 12 and the second extension portion 22, wherein, Figure 2a The schematic diagram of the structure of the first contact 1 and the second contact 2 facing each other in this case is shown. Figure 2b A schematic structural diagram of the first contact 1 and the second contact 2 facing each other in this case is shown.
[0044] Obviously, the structures of the first elastic rod 3 and the second elastic rod 4 may also be different, that is, in this case, both ends of the first elastic rod 3 may have a bent portion 41 at the same time. In this case, the first extension portion 12 at both ends of the first contact 1 has a first mounting hole 61, and the second elastic rod 4 is similar. In addition, the lengths of the first elastic rod 3 and the second elastic rod 4 may also be different. It can be seen that the connection relationship between the first elastic rod 3 and the second elastic rod 4 and the first contact 1 and the second contact 2 can be implemented in a variety of ways, all of which fall within the scope of protection of the present application.
[0045] Preferably, Figure 4b FIG. 1 shows a structural diagram of another embodiment of the first elastic rod 3 and the second elastic rod 4 of the movable contact 100 of the present application. Figure 4b As shown, the first elastic rod 3 and the second elastic rod 4 are each provided with a bent portion 41 at both ends. Accordingly, the first extension portion 12 at both ends of the first contact 1 and the second extension portion 22 at both ends of the second contact 2 are provided with a first mounting hole 61. The first elastic rod 3 is plugged into the first mounting hole 61 of the first extension portion 12 via the bent portions 41 at both ends, and the second elastic rod 4 is plugged into the first mounting hole 61 of the second extension portion 22 via the bent portions 41 at both ends. Similarly, the bent portions 41 are the same as those described above and are preferably right angles. Of course, other embodiments can also achieve the same technical effects, which will not be repeated here.
[0046] By providing first mounting holes 61 at both ends of the first contact 1 and both ends of the second contact 2, and providing bent portions 41 at both ends of the first elastic rod 3 and the second elastic rod 4, the bent portions 41 are plugged into and engaged with the first mounting holes 61 to limit the movement of the first elastic rod 3 and the second elastic rod 4 in the first and second directions, thereby improving the stability of the connection between the first elastic rod 3 and the second elastic rod 4 and the first contact 1 and the second contact 2, resulting in a symmetrical structure and beautiful workmanship.
[0047] Preferably, Figure 4b and Figure 5aAs shown, in another embodiment of the first elastic rod 3 and the second elastic rod 4 of the movable contact 100 of the present application, the first mounting hole 61 is not provided on the first contact 1 and the second contact 2, and the first elastic rod 3 and the second elastic rod 4 are symmetrical along the plane surrounded by the first direction and the second direction; the first elastic rod 3 and the second elastic rod 4 are both integrally formed, and each includes a first section 31, two second sections 32 respectively connected to the two ends of the first section 31, and two third sections 31 respectively connected to the two second sections 32, the first section 31 of the first elastic rod 3 is parallel to the plane surrounded by the first direction and the second direction, the two second sections 32 are bent along the third direction toward the movable contact 100, and the two third sections 33 are bent in opposite directions along the second direction, the third sections 33 at both ends of the first elastic rod 3 respectively abut against the first extension portions 12 at both ends of the first contact 1, and the third sections 33 at both ends of the second elastic rod 4 respectively abut against the second extension portions 22 at both ends of the second contact 2. By making the first elastic rod 3 and the second elastic rod 4 have a plurality of bending structures, when the mounting shaft 51 presses the first elastic rod 3 and the second elastic rod 4, a better elastic effect can be generated.
[0048] Preferably, Figure 1a As shown, in one embodiment of the first contact 1 and the second contact 2 of the movable contact 100 of the present application, the connection portion between the first main body portion 11 and the first extension portion 12 is a bent structure, and the first main body portion 11 is parallel to the first extension portion 12; the connection portion between the second main body portion 21 and the second extension portion 22 is a bent structure, and the second main body portion 21 is parallel to the second extension portion 22, the mounting shaft 51 makes the first main body portion 11 and the second main body portion 21 close together, and there is a clamping gap between the first extension portion 12 and the second extension portion 22, the portion of the first elastic rod 3 connected between the two first extension portions 12 is a straight rod, and there is a deformation gap between the first main body portion 11, and the portion of the second elastic rod 4 connected between the two second extension portions 22 is a straight rod, and there is a deformation gap between the second main body portion 21. Among them, Figure 2a The schematic diagram of the structure of the first contact 1 and the second contact 2 facing each other in this case is shown. Figure 2b A schematic structural diagram of the first contact 1 and the second contact 2 facing each other in this case is shown.
[0049] Through the design of the bending structure, the first main body portion 11 and the second main body portion 12 of the first contact 1 and the second contact 2 are fitted together, thereby increasing the contact area of the first contact 1 and the second contact 2 in the third direction, and improving the stability in the third direction. At the same time, the bending structure can also create a clamping gap between the first extension portion 12 and the second extension portion 22 at both ends of the first contact 1 and the second contact 2, which is used for clamping and connecting with the static contact. The structure is compact, the workmanship is beautiful, and the utilization rate of the internal space of the switch contact is improved.
[0050] Preferably, Figure 5a and Figure 5b As shown, in another embodiment of the first contact 1 and the second contact 2 of the moving contact 100 of the present application, the first main body 11 and the two first extensions 12 are in the same plane; the second main body 21 and the two second extensions 22 are in the same plane, and a boss 513 is provided in the middle of the mounting shaft 51, and the boss 513 is located between the first main body 11 and the second main body 21, so that the first main body 11 and the second main body 21 are spaced apart, and the two first extensions 12 are respectively spaced apart from the two second extensions 22, forming a clamping gap at both ends of the moving contact 100.
[0051] in, Figure 6a FIG2 shows a schematic structural diagram of the opposing surfaces of the first contact 1 and the second contact 2 in the second embodiment. Figure 6b A schematic diagram of the structure of the second embodiment shows the back faces of the first contact 1 and the second contact 2. By arranging the first main portion 11 and the first extension portion 12, and the second main portion 21 and the second extension portion 22 on the same plane, the bending process steps can be reduced, production time can be saved, and production efficiency can be improved.
[0052] Further, such as Figure 5a As shown, in this embodiment, first limiting grooves 511 are provided at both ends of the mounting shaft 51. The first limiting grooves 511 at both ends are respectively engaged with the middle portions of the first elastic rod 3 and the second elastic rod 4. The boss 513 in the middle portion of the mounting shaft 51 is tightly attached to the middle portions of the first contact 1 and the second contact 2, so that a clamping gap is provided between the first contact 1 and the second contact 2.
[0053] In other embodiments, at least one boss structure may be provided between the first contact 1 and the second contact 2 instead of the boss 513 in the middle of the mounting shaft 51. The boss structure enables the first contact 1 and the second contact 2 to be spaced apart so that both ends of the first contact 1 and the second contact 2 have a clamping gap for clamping the static contact. This all falls within the scope of protection of the present application.
[0054] Preferably, Figure 1a and Figure 5a As shown, the side protrusions of the first extension portion 12 of the first contact 1 and the second extension portion 22 of the second contact 2 are provided with an arc-shaped protrusion 13, and the arc-shaped protrusion 13 of the first extension portion 12 and the arc-shaped protrusion 13 of the second extension portion 22 are arranged opposite to each other and the distance between them is greater than the distance of the clamping gap between the first extension portion 12 and the second extension portion 22.
[0055] Furthermore, both sides of the first extension portion 12 and the second extension portion 22 are provided with an arc-shaped protrusion 13 , or one side of the first extension portion 12 and the second extension portion 22 is provided with an arc-shaped protrusion 13 .
[0056] Furthermore, in one embodiment, the arc-shaped protrusion 13 is arranged on both sides of the first extension portion 12 and the second extension portion 22 along the second direction, and conforms to the rotation direction of the moving contact 100 and is plug-fitted and connected with the static contact. By arranging the arc-shaped protrusion 13 at both ends of the moving contact 100, the opening angle of the two ends can be increased, which facilitates the insertion of the static contact.
[0057] In one embodiment, the moving contact 100 rotates clockwise or counterclockwise to be plug-fitted with the static contact, and the arc-shaped protrusion 13 is arranged on one side of the first extension portion 12 and the second extension portion 22 in the second direction, and the moving contact 100 is plug-fitted with the static contact through the arc-shaped protrusion 13.
[0058] In one embodiment, the movable contact 100 can be connected to the static contact by rotating clockwise or counterclockwise. At this time, the arc-shaped protrusion 13 is respectively arranged on both sides of the first extension portion 12 and the second extension portion 22 in the second direction, satisfying the condition that it can be connected to the static contact by rotating clockwise or counterclockwise. Of course, in some inferior embodiments, the arc-shaped protrusion 13 on one side of one end of the movable contact 100 can be only arranged on the first extension portion 12 or the second extension portion 22, which can save production costs. It can be seen that the connection relationship between the arc-shaped protrusion 13 and the movable contact 100 can have multiple embodiments. All of the above can be thought of by those skilled in the art in combination with the existing technology, which are within the scope of protection of this application. In addition, the arc-shaped protrusion 13 can also be a non-absolute arc structure. As long as it is convenient for plugging with the static contact and achieving the same technical effect, it is within the scope of protection of this application and will not be repeated.
[0059] It should be noted that, in the embodiment of the present application, the first mounting hole 61 can also be replaced by providing grooves at both ends of the first contact 1 and the second contact 2, and the two ends of the first elastic rod 3 and the second elastic rod 4 are embedded in the grooves to limit the first elastic rod 3 and the second elastic rod 4 in the first direction and the second direction. At this time, the bending angle of the optimal embodiment of the bending portion 41 may no longer be a right angle. For example, an obtuse angle structure is more conducive to the installation of the bending portion 41 in the groove. Figure 4a and Figure 4b A groove may also be provided on the upper surface to enhance the stability of the first elastic rod 3 and the second elastic rod 4 .
[0060] The switch contact structure provided in the present application has clamping gaps at both ends of the moving contact 100, which are clamped and connected to the static contact through the clamping gap. Since the first contact 1 and the second contact 2 are plate-like structures, the contact area between the static contact and the moving contact can be increased, the contact internal resistance can be reduced, and the internal resistance of the isolating switch can be reduced, thereby effectively improving the current carrying capacity and temperature rise performance of the isolating switch.
[0061] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are conventionally placed directions or positional relationships during use. They are intended solely for ease of description and do not imply that the devices or components referred to must have a specific direction. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.
[0062] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art of the present invention, without departing from the concept of the present invention, several simple deductions or substitutions can be made, which should be considered to fall within the scope of protection of the present invention.
Claims
1. A switch contact, comprising a moving contact (100), wherein the moving contact (100) comprises a first contact (1) and a second contact (2), wherein the first contact (1) is integrally formed and comprises a first main body (11) and two first extensions (12) respectively connected to both ends of the first main body (11), and the second contact (2) is integrally formed and comprises a second main body (21) and two second extensions (22) respectively connected to both ends of the second main body (21), wherein the first main body (11) and the second main body (21) are arranged opposite to each other, and the two first extensions (12) are respectively arranged at intervals relative to the two second extensions (22) to form a clamping gap at both ends of the moving contact (100) for clamping a stationary contact, characterized in that: The movable contact (100) further comprises a first elastic rod (3), a second elastic rod (4) and a mounting shaft (51), wherein the first elastic rod (3) and the second elastic rod (4) are respectively arranged on two opposite sides of the first contact (1) and the second contact (2), the two ends of the first elastic rod (3) are respectively connected to the first extension parts (12) at the two ends of the first contact (1), and the two ends of the second elastic rod (4) are respectively connected to the second extension parts (22) at the two ends of the second contact (2); the first main body (11) and the second main body (21) are provided with a second mounting hole (62), and the mounting shaft (51) passes through the second mounting hole (62), one end of which is connected to the first elastic rod (3) and the other end of which is connected to the second elastic rod (4), so as to lock the first elastic rod (3) and the second elastic rod (4) to the two opposite sides of the first contact (1) and the second contact (2).
2. The switch contact according to claim 1, characterized in that: Third mounting holes (512) are provided at both ends of the mounting shaft (51), and the first elastic rod (3) and the second elastic rod (4) pass through the third mounting holes (512).
3. The switch contact according to claim 2, characterized in that: At least one of the third mounting holes (512) is provided with an opening structure to form a first limiting groove (511).
4. The switch contact according to claim 3, characterized in that: One end of the mounting shaft (51) is a first limiting groove (511), and the other end is a third mounting hole (512); one of the first elastic rod (3) and the second elastic rod (4) passes through the third mounting hole (512), and the other of the first elastic rod (3) and the second elastic rod (4) is clamped in the first limiting groove (511).
5. The switch contact according to claim 1, characterized in that At least one end of the first elastic rod (3) and the second elastic rod (4) is a bent portion (41), and a first mounting hole (61) corresponding to the bent portion (41) is provided on the first extension portion (12) of the first contact (1) and the second extension portion (22) of the second contact (2).
6. The switch contact according to claim 5, characterized in that: The first elastic rod (3) and the second elastic rod (4) are provided with bending portions (41) at both ends, the first extension portions (12) at both ends of the first contact (1) and the second extension portions (22) at both ends of the second contact (2) are provided with first mounting holes (61), the first elastic rod (3) is inserted into the first mounting hole (61) of the first extension portion (12) through the bending portions (41) at both ends, and the second elastic rod (4) is inserted into the first mounting hole (61) of the second extension portion (22) through the bending portions (41) at both ends.
7. The switch contact according to claim 1, characterized in that: The movable contact (100) has a length direction of the first direction, a width direction of the second direction, and a thickness direction of the third direction. The first elastic rod (3) and the second elastic rod (4) are symmetrical along a plane formed by the first direction and the second direction. The first elastic rod (3) and the second elastic rod (4) are both integrally formed and each comprises a first section (31), two second sections (32) respectively connected to the two ends of the first section (31), and two third sections (33) respectively connected to the two second sections (32). The first section (31) of the first elastic rod (3) is parallel to the first direction. The two second sections (32) are bent in a direction close to the movable contact (100) along the third direction. The two third sections (33) are bent in opposite directions along the second direction. The third sections (33) at both ends of the first elastic rod (3) are respectively against the first extensions (12) at both ends of the first contact (1), and the third sections (33) at both ends of the second elastic rod (4) are respectively against the second extensions (22) at both ends of the second contact (2).
8. The switch contact according to claim 1, characterized in that The connection portion between the first main body (11) and the first extension portion (12) is a bent structure, and the first main body (11) and the first extension portion (12) are parallel; the connection portion between the second main body (21) and the second extension portion (22) is a bent structure, and the second main body (21) and the second extension portion (22) are parallel; the first main body (11) and the second main body (21) are tightly attached, and a clamping gap is provided between the first extension portion (12) and the second extension portion (22); the portion of the first elastic rod (3) connected between the two first extension portions (12) is a straight rod, and a deformation gap is provided between the first main body (11); the portion of the second elastic rod (4) connected between the two second extension portions (22) is a straight rod, and a deformation gap is provided between the second main body (21).
9. The switch contact according to claim 1, characterized in that The first main body (11) and the two first extensions (12) are in the same plane; the second main body (21) and the two second extensions (22) are in the same plane, a boss (513) is provided in the middle of the mounting shaft (51), and the boss (513) is located between the first main body (11) and the second main body (21), so that the first main body (11) and the second main body (21) are spaced apart, and the two first extensions (12) are spaced apart from the two second extensions (22), respectively, to form a clamping gap at both ends of the moving contact (100).
10. The switch contact according to claim 1, characterized in that The side protrusions of the first extension portion (12) of the first contact (1) and the second extension portion (22) of the second contact (2) are provided with arc-shaped protrusions (13); the arc-shaped protrusions (13) of the first extension portion (12) and the arc-shaped protrusions (13) of the second extension portion (22) are arranged opposite to each other and the distance between them is greater than the distance of the clamping gap between the first extension portion (12) and the second extension portion (22).