Switch contact
By designing a switch contact structure including a first contact, a second contact, a first elastic rod, a second elastic rod and a U-shaped fastener, the problem of excessive internal resistance of the isolated switch dynamic contact and a static contact is solved, the current carrying capacity and temperature rise performance are improved, and the production cost is reduced.
Patent Information
- Application Number
- CN202422056000.5
- 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.
A switch contact structure including a first contact, a second contact, a first elastic rod, a second elastic rod and a U-shaped snap fastener is adopted. The clamping force is provided through the snap fastener, the contact area is increased and the internal resistance is reduced, and the rod-shaped structure is used to save materials and reduce costs.
Effectively reduce the internal resistance of the isolating switch, enhance the current carrying capacity and temperature rise performance, while simplifying the installation process and reducing production costs.
Smart Images
Figure CN223296674U_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, comprising a movable contact, the movable contact comprising a first contact and a second contact, the first contact being integrally formed and comprising a first main body portion and two first extension portions respectively connected to both ends of the first main body portion, the second contact being integrally formed and comprising a second main body portion and two second extension portions respectively connected to both ends of the second main body portion, the first main body portion and the second main body portion being arranged opposite to each other, and the two first extension portions being spaced apart from each other relative to the two second extension portions to form a clamping gap at both ends of the movable contact for clamping a stationary contact;
[0007] The moving contact further includes a first elastic rod, a second elastic rod and a U-shaped snap-fit member.
[0008] The first elastic rod and the second elastic rod are respectively arranged on two opposite sides of the first contact and the second contact, the two ends of the first elastic rod are respectively connected to the two ends of the first contact, and the two ends of the second elastic rod are respectively connected to the two ends of the second contact;
[0009] The snap fastener includes a side and an upper side and a lower side respectively connected to the two ends of the side. The inner sides of the upper side and the lower side of the snap fastener respectively abut against the middle parts of the first elastic rod and the second elastic rod, pressing the first elastic rod, the first contact, the second contact and the second elastic rod into the U-shaped structure of the snap fastener.
[0010] In a possible implementation, arcuate grooves are provided on the upper side and the lower side of the latch, and the middle portions of the first elastic rod and the second elastic rod are provided in the corresponding arcuate grooves.
[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, and at least one boss structure is provided between the first contact and the second contact. The boss structure spaced the first contact and the second contact so that a clamping gap is formed at both ends thereof for clamping the static contact.
[0016] In a possible implementation, a groove is further provided on the same side of the first main body portion and the second main body portion, and the side edge of the latch is disposed in the groove.
[0017] 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.
[0018] In a possible implementation, both sides of the first extension portion and the second extension portion are provided with arc-shaped protrusions, or one side of the first extension portion and the second extension portion is provided with an arc-shaped protrusion.
[0019] 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 members, most of them obtain the clamping force by supporting, pressing or resisting the contacts, thereby applying the clamping force to the moving contact. The present application is fixed by using a U-shaped clip. The clip has good elasticity and undergoes elastic deformation during installation. While providing good clamping force to the first contact and the second contact, the installation is also more convenient. The clip limits and fixes the first elastic rod, the second elastic rod, the first contact and the second contact, which not only increases the contact area between the static contact and the moving contact, reduces 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 saves materials and reduces production costs, while providing better elasticity and is easy to cooperate with the clip for installation and locking, which is simpler and more convenient.
[0020] In addition, arc grooves are provided on the upper side and the lower side of the snap fastener, and the middle parts of the first elastic rod and the second elastic rod are provided in the corresponding arc grooves. The snap fastener and the two elastic rods are in phase with each other, which increases reliability.
[0021] 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.
[0022] In addition, a groove is provided on the same side of the first main body and the second main body to limit the snapping member, and an arc-shaped groove is provided on the snapping member to limit the first elastic rod and the second elastic rod, so that the overall structure of the moving contact is reliable and the components will not be offset. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1a and Figure 1b This is a structural diagram of the movable contact of the utility model;
[0024] Figure 2 This is a schematic structural diagram of the fastener of the utility model;
[0025] Figure 3a and Figure 3b It is a structural schematic diagram of two embodiments of the first elastic rod and the second elastic rod of the utility model;
[0026] Figure 4a This is a schematic structural diagram of the facing surfaces of the first contact and the second contact of the present invention;
[0027] Figure 4b This is a schematic structural diagram of the back faces of the first contact and the second contact of the present invention;
[0028] In the figure: moving contact 100; first contact 1; second contact 2; first elastic rod 3; second elastic rod 4; locking member 5; snap member 52; first main body 11; first extension portion 12; second main body 21; second extension portion 22; bent portion 41; first mounting hole 61; first section 31; second section 32; third section 33; arc-shaped groove 13; groove 14; arc-shaped protrusion 15. DETAILED DESCRIPTION
[0029] The following embodiments are given in conjunction with the accompanying drawings to further illustrate the specific implementation of the present utility model. The protection scope of the present utility model is not limited to the description of the following embodiments.
[0030] 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.
[0031] 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 after each component is installed. Figure 1b For the moving contacts before installation of each component, 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 piece 5. The locking piece 5 in this application is a U-shaped snap-fit piece 52. 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 arranged to be spaced apart from each other to form a clamping gap at both ends of the moving contact 100. The clamping gap is used to accommodate the static contact. In a preferred embodiment, the snap-fit piece 52 has good elasticity and undergoes elastic deformation during installation, which provides good clamping force to the first contact 1 and the second contact 2 while making installation more convenient.
[0032] The two ends of the first elastic rod 3 are respectively connected to the first extension portions 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 portions 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.
[0033] The latch 52 is installed in the middle of the first contact 1 and the second contact 2, locking the first elastic rod 3 and the second elastic rod 4 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 latch 52 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.
[0034] The latch 52 includes side edges and upper and lower edges connected to the ends of the side edges. The inner sides of the upper and lower edges of the latch 52 respectively abut against the middle portions of the first elastic rod 3 and the second elastic rod 4, thereby pressing and clamping the first elastic rod 3, the first contact 1, the second contact 2, and the second elastic rod 4 within the U-shaped structure of the latch 52. The length direction of the movable contact 100 is the first direction, the width direction is the second direction, and the thickness direction is the third direction.
[0035] 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 of the moving contact 100 and the static contact. Compared with the existing elastic members, most of which obtain the clamping force by contact support, pressing or resisting, thereby applying a clamping force to the moving contact 100. The present application is fixed by using a clip 52 installed on one side of the middle part of the first contact 1 and the second contact 2. The clip 52 includes an upper part, a lower part and a side part. The upper part is connected to the middle part of the first elastic rod 3, and the lower part is connected to the middle part of the second elastic rod 4. A clamping force is applied 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 undergo elastic deformation, acting on the first contact 1 and the second contact 2 to make them fit inwardly. This method can reliably clamp the first contact 1 and the second contact 2 so that they will not deviate.
[0036] The first elastic rod 3, the second elastic rod 4, the first contact 1 and the second contact 2 can be limited and fixed by the latch 52, which not only increases the contact area between the static contact and the movable contact 100, 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 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 install and lock with the latch 52, which is simpler and more convenient.
[0037] Preferably, an arc-shaped groove 13 is provided on the upper side and the lower side of the latch 52, and the middle parts of the first elastic rod 3 and the second elastic rod 4 are provided in the corresponding arc-shaped groove 13 to limit each other and avoid deviation, that is, the limiting latch 52 also limits the first elastic rod 3 and the second elastic rod 4, and the first elastic rod 3 and the second elastic rod 4 also limit the latch 52.
[0038] 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.
[0039] 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.
[0040] Preferably, in one embodiment, 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 abutted against the corresponding first extension portion 12 and the second extension portion 22.
[0041] 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.
[0042] Preferably, Figure 1a 、 Figure 1band Figure 3a 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.
[0043] 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.
[0044] Further, such as Figure 3b As 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 latching member 52 presses the first elastic rod 3 and the second elastic rod 4, a better elastic effect can be generated.
[0045] Preferably, Figure 1aAs 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 snap fastener 52 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 4a 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 4b A schematic structural diagram of the first contact 1 and the second contact 2 facing each other in this case is shown.
[0046] 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.
[0047] Preferably, the first contact 1 and the second contact 2 of the movable contact 100 of the present application can also be a flat plate structure, with the first main body 11 and the two first extensions 12 being coplanar; the second main body 21 and the two second extensions 22 being coplanar, and at least one boss structure being provided between the first contact 1 and the second contact 2. The boss structure spaced the first contact 1 and the second contact 2 apart, forming a clamping gap at each end for clamping the stationary contact. In this case, a deformation gap must be ensured between the first elastic rod 3 and the second elastic rod 4, respectively, and their corresponding first contact 1 and second contact 2, so that when the latch 52 clamps the first elastic rod 3 and the second elastic rod 4, they can deform and thereby generate an elastic force to clamp the first contact 1 and the second contact 2. By arranging the first main body 11 and the first extension 12, and the second main body 21 and the second extension 22, respectively, on the same plane, the bending process steps can be reduced, production time can be saved, and production efficiency can be improved.
[0048] Preferably, Figure 1bAs shown, a groove 14 is further formed on the same side of the first main body 11 and the second main body 21, and the side edge of the latch 52 is disposed in the groove 14 to limit the latch 52. By providing the groove 14 on the same side of the first contact 1 and the second contact 2 to cooperate with the side edge of the latch 52, and providing the arc-shaped groove 13 and the first elastic rod 3 and the second elastic rod 4 on the upper and lower sides of the latch 52, the movement of the latch 52 is limited in the first and second directions, respectively. This ensures that the overall structure of the movable contact 100 is reliable, prevents the various components from shifting, and prevents the various components from falling off during the rotation of the movable contact due to loose fixation, thereby affecting the normal power supply of the circuit.
[0049] Preferably, Figure 1a 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 15, and the arc-shaped protrusion 15 of the first extension portion 12 and the arc-shaped protrusion 15 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.
[0050] Furthermore, both sides of the first extension portion 12 and the second extension portion 22 are provided with an arc-shaped protrusion 15 , or one side of the first extension portion 12 and the second extension portion 22 is provided with an arc-shaped protrusion 15 .
[0051] Furthermore, in one embodiment, the arc-shaped protrusion 15 is arranged on both sides of the first extension portion 12 and the second extension portion 22 along the second direction, and it 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 15 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.
[0052] In one embodiment, the moving contact 100 rotates clockwise or counterclockwise to be plug-fitted with the static contact, and the arc-shaped protrusion 15 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 15.
[0053] 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 15 is respectively arranged on both sides of the first extension 12 and the second extension 22 in the second direction, satisfying the condition that it can be connected to the static contact by clockwise or counterclockwise. Of course, in some inferior embodiments, the arc-shaped protrusion 15 on one side of one end of the movable contact 100 can be only arranged on the first extension 12 or the second extension 22, which can save production costs. It can be seen that the connection relationship between the arc-shaped protrusion 15 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 15 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.
[0054] 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 .
[0055] 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.
[0056] 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.
[0057] 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 movable contact (100), the movable contact (100) comprising a first contact (1) and a second contact (2), the first contact (1) being integrally formed and comprising a first main body (11) and two first extensions (12) respectively connected to both ends of the first main body (11), the second contact (2) being integrally formed and comprising a second main body (21) and two second extensions (22) respectively connected to both ends of the second main body (21), the first main body (11) and the second main body (21) being arranged opposite to each other, and the two first extensions (12) and the two second extensions (22) being spaced apart from each other to form a clamping gap at both ends of the movable contact (100) for clamping a stationary contact; It is characterized by: The moving contact (100) further includes a first elastic rod (3), a second elastic rod (4) and a U-shaped snap-fit member (52). 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 two ends of the first contact (1), and the two ends of the second elastic rod (4) are respectively connected to the two ends of the second contact (2); The snap fastener (52) includes a side and an upper side and a lower side respectively connected to the two ends of the side. The inner sides of the upper side and the lower side of the snap fastener (52) respectively abut against the middle of the first elastic rod (3) and the second elastic rod (4), so that the first elastic rod (3), the first contact (1), the second contact (2) and the second elastic rod (4) are pressed and fastened into the U-shaped structure of the snap fastener (52).
2. The switch contact according to claim 1, characterized in that: The upper side of the snap fastener (52) and the lower side of the snap fastener (52) are provided with arc-shaped grooves (13), and the middle parts of the first elastic rod (3) and the second elastic rod (4) are provided in the corresponding arc-shaped grooves (13).
3. 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).
4. The switch contact according to claim 3, 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.
5. 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).
6. 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).
7. 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, and at least one boss structure is provided between the first contact (1) and the second contact (2). The boss structure enables the first contact (1) and the second contact (2) to be spaced apart so that a clamping gap is formed at both ends thereof for clamping a static contact.
8. The switch contact according to claim 1, characterized in that A groove (14) is further provided on the same side of the first main body portion (11) and the second main body portion (21), and the side edge of the latch (52) is arranged in the groove (14).
9. 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 (15); the arc-shaped protrusions (15) of the first extension portion (12) and the arc-shaped protrusions (15) 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).
10. The switch contact according to claim 9, characterized in that Both sides of the first extension portion (12) and the second extension portion (22) are provided with arc-shaped protrusions (15), or one side of the first extension portion (12) and the second extension portion (22) is provided with an arc-shaped protrusion (15).