Switch contact
By setting the elastic fastener clamping and limiting on the moving contact, the problem of high internal resistance of the isolation switch is solved, and the current carrying capacity and temperature rise performance is improved, while reducing costs and simplifying the assembly process.
Patent Information
- Application Number
- CN202422055374.5
- 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, the cost of increasing the conductor cross-sectional area or tightening force method is high and the assembly is complicated.
A plurality of elastic fasteners are provided on the movable contacts. The fasteners clamp the first contact and the second contact, provide inward clamping force and fix it through the limiting part, increase the contact area and reduce internal resistance.
It reduces the internal resistance of the isolating switch, improves the current carrying capacity and temperature rise performance, saves costs and is simple to assemble.
Smart Images
Figure CN223296672U_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] An isolating switch includes switch contacts, which in turn comprise a moving contact and a stationary contact. The opening and closing of these contacts disconnect and connect the circuit. In existing technology, the internal contact resistance between the moving and stationary contacts is too high, increasing the internal resistance of the switch and reducing the current-carrying capacity and temperature-rise performance of the isolating switch. One way to reduce this internal contact resistance is to increase the cross-sectional area of the conductor. Another way is to increase the clamping force between the moving and stationary contacts to ensure reliable contact between them.
[0004] 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, and the elastic sheet needs to be locked by a locking member, which has the problems of high cost and complex assembly. Utility Model Content
[0005] 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.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] The utility model provides a switch contact, comprising a movable contact, wherein the movable contact comprises a first contact and a second contact arranged opposite to each other, wherein both ends of the first contact and the second contact have a clamping gap for clamping a stationary contact.
[0008] The moving contact also includes at least two elastic clips, and the at least two clips respectively clamp the first contact and the second contact. The clip includes an upper part and a lower part that are relatively spaced apart, and a side part connecting the upper part and the lower part, and the side part is opposite to the side edges of the first contact and the second contact. The upper part and the lower part are arranged on the opposite sides of the first contact and the second contact, clamping the first contact and the second contact, and providing an inward clamping force for the first contact and the second contact.
[0009] In a possible implementation, the movable contact includes two latches, which are respectively clamped on both sides of the middle portion of the first contact and the second contact in the length direction, and the openings of the two latches face opposite directions.
[0010] In a possible implementation, the upper portion and the side portion are formed at an acute angle, and the lower portion and the side portion are formed at an acute angle.
[0011] In one possible implementation, first limiting portions are respectively provided on the upper and lower ends of the latch, and second limiting portions that cooperate with the first limiting portions to achieve limiting are provided on the first contact and the second contact.
[0012] In one possible implementation, the first limiting portion is a first arc-shaped structure that bends inward, the second limiting portion is a first groove, and the first arc-shaped structure extends into the first groove; or the first limiting portion is a second arc-shaped structure that bends outward, and the second arc-shaped structure extends into the first groove.
[0013] In a possible implementation, the second limiting portion is located at the center of the first contact and the second contact in the width direction.
[0014] In one possible implementation, at least one boss is provided between the first contact and the second contact. The boss spaced the ends of the first contact and the second contact to form the clamping gap. The boss is integrally formed with the first contact or the second contact.
[0015] In one possible implementation, the first contact has a side facing the second contact with a boss at a position corresponding to the first groove, and the second contact has a side facing the first contact with a boss at a position corresponding to the first groove. The boss on the first contact abuts against the boss on the second contact so that the first contact and the second contact are spaced apart at both ends to form the clamping gap.
[0016] In a possible implementation, a third groove is formed on the sides of the first contact and the second contact, a side portion of the latch is located in the third groove, and the third groove limits the latch.
[0017] In one possible implementation, the side protrusions at both ends of the first contact and the second contact are provided with arc-shaped protrusions, and the arc-shaped protrusions of the first contact and the arc-shaped protrusions of the second contact are arranged opposite to each other and the distance between them is greater than the distance of the clamping gap between the first contact and the second contact.
[0018] The switch contacts of this utility model are provided with multiple elastic U-shaped latches on the first and second contacts. The two ends of the latches are respectively connected to the first and second contacts. This not only provides an inward clamping force for the first and second contacts, but also limits and fixes the first and second contacts. No separate elastic sheet is required, which saves costs and simplifies assembly. When the moving contact and the static contact are plugged in, the clamping force between the moving contact and the static contact is increased, thereby increasing the contact area between the moving contact and the static contact, reducing the internal resistance of the disconnector, and improving the current carrying capacity and temperature rise performance of the disconnector.
[0019] Furthermore, this embodiment provides two clips on both sides of the middle of the length direction of the first contact and the second contact, and one clip only clamps a part of the first contact and the second contact. In this way, the first contact and the second contact have a better clamping effect after clamping, and the first contact and the second contact are clamped stably. The opening of the U-shaped structure of the clip faces in opposite directions, which can produce a better limiting effect on the first contact and the second contact in the second direction. At the same time, the two clips also increase the clamping force after the moving contact and the static contact are plugged in, thereby increasing the contact area between the moving contact and the static contact and reducing the internal resistance of the disconnector.
[0020] Furthermore, in this embodiment, the second limiting portion is arranged at the center of the second direction of the first contact and the second contact. Unlike the conventional structural design in which the snap member clamps the entire first contact and the second contact, the clamping force of the snap member is applied to the center of the second direction of the first contact and the second contact through the first limiting portion thereon. The elastic clamping force of the snap member can be applied to the middle of the first contact and the second contact with the greatest force, so that the first contact and the second contact are subjected to balanced force, thereby increasing the stability of the clamping.
[0021] Furthermore, by providing an integrally formed boss at a position corresponding to the first groove on a side of the first contact facing the second contact, and providing an integrally formed boss at a position corresponding to the first groove on a side of the second contact facing the first contact, the boss on the first contact is abutted against the boss on the second contact, forming a clamping gap at both ends of the moving contact. This design allows the clamping force of the snap member to act entirely on the boss, resulting in a firm clamping and stable force. The boss can be formed by stamping the first groove, and has a simple structure and low cost.
[0022] Furthermore, by providing second arc-shaped protrusions at the ends of the first contact and the second contact, the opening angle thereof can be larger than the distance of the clamping gap between the first contact and the second contact, thus making it easier to plug the movable contact and the stationary contact. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1a and Figure 1b This is a schematic diagram of the structure of the switch contact of the utility model;
[0024] Figure 2 This is a schematic structural diagram of the fastener of the utility model;
[0025] Figure 3a It is a structural schematic diagram of the opposite surfaces of the first contact and the second contact of the utility model;
[0026] Figure 3b This is a schematic structural diagram of the back surfaces of the first contact and the second contact of the present invention;
[0027] In the figure: movable contact 100; first contact 1; second contact 2; latch 3; upper portion 31; lower portion 32; side portion 33; first limiting portion 34; second limiting portion 35; inclined corner 36; boss 4; third groove 37; arc-shaped protrusion 5. DETAILED DESCRIPTION
[0028] 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.
[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] The present application provides a switch contact, such as Figure 1a and Figure 1b As shown, the movable contact 100 includes a first contact 1 and a second contact 2 arranged opposite to each other. The first contact 1 and the second contact 2 have a clamping gap at both ends for clamping and connecting with the static contact.
[0031] The movable contact 100 also includes at least two elastic latches 3, at least two of the latches 3 respectively clamp the first contact 1 and the second contact 2, the latch 3 is an open structure, which can be a U-shaped structure or a C-shaped structure, the latch 3 includes an upper portion 31 and a lower portion 32 arranged relatively spaced apart, and a side portion 33 connecting the upper portion 31 and the lower portion 32, the side portion 33 is opposite to the side edges of the first contact 1 and the second contact 2, the upper portion 31 and the lower portion 32 are arranged on the opposite sides of the first contact 1 and the second contact 2, clamping the first contact 1 and the second contact 2, and providing an inward clamping force for the first contact 1 and the second contact 2, in this embodiment, the latch 3 is a U-shaped structure, wherein the two latches 3 are respectively located on both sides of the middle of the length direction of the first contact 1 and the second contact 2, wherein, Figure 1a This is a schematic diagram of the structure of the movable contact 100 after the components are installed. Figure 1b This is a structural diagram of the movable contact 100 of this application before the components are installed.
[0032] By providing a plurality of snap fasteners 3 with elastic opening structures on the first contact 1 and the second contact 2, the two ends of the snap fasteners 3 are respectively connected to the first contact 1 and the second contact 2, which not only provides an inward clamping force for the first contact 1 and the second contact 2, but also limits and fixes the first contact 1 and the second contact 2. There is no need to provide a separate elastic sheet, which saves costs and simplifies assembly. When the moving contact and the static contact are plugged in, the clamping force between the moving contact and the static contact can be increased, thereby increasing the contact area between the moving contact and the static contact, reducing the internal resistance of the disconnector, and improving the current carrying capacity and temperature rise performance of the disconnector.
[0033] Preferably, Figure 1a As shown, the moving contact 100 includes two clips 3, which are respectively clamped on both sides of the middle of the length direction of the first contact 1 and the second contact 2, and the openings of the two clips 3 are facing oppositely and are arranged to be clamped relative to each other along the second direction, so that the first contact 1 and the second contact 2 can be clamped and limited in the second direction. In this embodiment, two clips 3 are provided on both sides of the middle of the length direction of the first contact 1 and the second contact 2, and the openings of the U-shaped structure of the clips 3 are facing oppositely, which can produce a better limiting effect on the first contact 1 and the second contact 2 in the second direction. At the same time, the two clips 3 also increase the clamping force after the moving contact 100 is plugged into the static contact, thereby increasing the contact area between the moving contact and the static contact, and reducing the internal resistance of the disconnector.
[0034] Of course, the two latches 3 can also be clamped on both sides of the middle of the first contact 1 and the second contact 2 with their openings facing the same direction. This also falls within the scope of protection of this application and can also achieve the effect of increasing the clamping force, but its limiting effect in the second direction will be slightly worse than that of the embodiment in which the openings of the two latches 3 face opposite directions. In order to more clearly illustrate the specific embodiments of this application, the length direction of the movable contact 100 is defined as the first direction, the width direction is defined as the second direction, and the thickness direction is defined as the third direction.
[0035] Preferably, Figure 2 The schematic diagram of the structure of the fastener 3 of the present application is shown in FIG. Figure 2 As shown, the latch 3 includes an upper portion 31, a lower portion 32, and a side portion 33 connecting the upper portion 31 and the lower portion 32, forming a U-shaped structure. The ends of the upper portion 31 and the lower portion 32 form an opening of the latch 3, the upper portion 31 is connected to the first contact 1, the lower portion 32 is connected to the second contact 2, and the side portion 33 is opposite to the side edges of the first contact 1 and the second contact 2. Preferably, the upper portion 31 and the side portion 33 are in an acute-angle structure, and the lower portion 32 and the side portion 33 are in an acute-angle structure. In some preferred embodiments, the side portion 33 and the side edges of the first contact 1 and the second contact 2 can be abutted against the side portion 33 of the snap member 3 to ensure that the first contact 1 and the second contact 2 do not shake relative to each other in the second direction and are firmly fixed; of course, in some inferior embodiments, the side portion 33 and the side edges of the first contact 1 and the second contact 2 may not be abutted. In this case, the snap member 3 should have a strong clamping force to prevent the first contact 1, the second contact 2 and the snap member 3 from shaking.
[0036] Preferably, first limiting portions 34 are provided at the ends of the upper portion 31 and the lower portion 32 of the latch 3. Second limiting portions 35 are provided on the first and second contacts 1 and 2 to cooperate with the first limiting portions 34 to achieve limiting positions. The cooperation between the first limiting portion 34 and the second limiting portion 35 not only limits the latch 3 but also clamps and secures the first and second contacts 1 and 2 in the third direction. In this embodiment, a latch 3 only clamps a portion of the first and second contacts 1 and 2. This allows for a better clamping effect on the first and second contacts 1 and 2 after clamping, ensuring stable clamping of the first and second contacts 1 and 2.
[0037] Further, such as Figure 1b 、 Figure 2 、 Figure 3a and Figure 3b As shown, the first limiting portion 34 of the latch 3 can be a first arc-shaped structure bent inwardly, and the first contact 1 and the second contact 2 are provided with a first groove that cooperates with the first arc-shaped structure. The first groove is the second limiting portion 35, and the first arc-shaped structure extends into the first groove, wherein, Figure 3a This is a schematic structural diagram of the opposite sides of the first contact 1 and the second contact 2 of the present invention. Figure 3b It is a structural schematic diagram of the back surfaces of the first contact 1 and the second contact 2 of the present invention.
[0038] By providing a first arc-shaped structure to cooperate with the first groove, the side portion 33 can abut against the side edges of the first contact 1 and the second contact 2, thereby limiting the movement of the first contact 1 and the second contact 2 in the second direction and limiting the movement of the first contact 1 and the second contact 2 in the third direction, thereby clamping and fixing the first contact 1 and the second contact 2.
[0039] Furthermore, the first limiting portion 34 may also be a second arc-shaped structure that bends outward, and the second arc-shaped structure extends into the first groove, which can also achieve the technical effect of both limiting the position of the latch 3 and clamping and fixing the first contact 1 and the second contact 2. Of course, the first limiting portion 34 of the latch 3 may also be a groove structure, and the first contact 1 and the second contact 2 are provided with a protrusion (i.e., the second limiting portion 35) that cooperates with the groove, which can also achieve the fixing and limiting of the latch, and all of this falls within the scope of protection of this application.
[0040] Preferably, the second limiting portion 35 can be located at the center of the second direction of the first contact 1 and the second contact 2. This design is different from the conventional design in which the latch 3 clamps the entire first contact 1 and the second contact 2. In this embodiment, the clamping force of the latch 3 acts on the center of the second direction of the first contact 1 and the second contact 2 through the first limiting portion 34 thereon. The maximum elastic clamping force of the latch 3 can be applied to the middle of the first contact 1 and the second contact 2, so that the force on the first contact 1 and the second contact 2 is balanced, and the clamping stability is increased.
[0041] Preferably, Figure 3a As shown, the contact portion between the side portion 33 of the latch 3 and the first contact 1 and the second contact 2 can also be provided with a bevel corner 36, and the connection between the upper portion 31 and the side portion 33 and the connection between the lower portion 32 and the side portion 33 are arc structures that cooperate with the bevel corner 36. The cooperation between the bevel corner 36 and the arc structure facilitates better fit between the latch 3 and the first contact 1 and the second contact 2.
[0042] Preferably, Figure 1a and Figure 1b As shown, at least one boss 4 can be provided between the first contact 1 and the second contact 2. The boss 4 enables the first contact 1 and the second contact 2 to be spaced apart at both ends to form the clamping gap. The boss 4 can be integrally formed with the first contact 1 or the second contact 2. Of course, it can also be installed and fixed between the first contact 1 and the second contact 2 for a second time, all of which fall within the scope of protection of this application.
[0043] Preferably, the first contact 1 has an integrally formed boss 4 on its side facing the second contact 2 at a position corresponding to the first groove, and the second contact 2 has an integrally formed boss 4 on its side facing the first contact 1 at a position corresponding to the first groove. The boss on the first contact 1 abuts against the boss 4 on the second contact 2, so that the first and second contacts 1 and 2 are spaced apart at both ends to form the clamping gap. The first contact 1 and the second contact 2 are both integrally formed structures, and the boss 4 can be formed by stamping the first groove, which has a simple structure and low cost. By providing the boss 4 between the first contact 1 and the second contact 2, the clamping gap for clamping and connecting with the stationary contact can be formed, and the first groove is used to cooperate with the first arc-shaped structure on the latch 3 to achieve limited fixation.
[0044] Preferably, Figure 3a and Figure 3b As shown, there are four bosses 4, which are respectively arranged on the opposite surfaces of the first contact 1 and the second contact 2; the bosses 4 are respectively arranged on both sides of the middle of the first contact 1 and the second contact 2 along the first direction, and the boss 4 of the first contact 1 and the boss 4 on the second contact 2 correspond one to one in the third direction. By arranging the bosses 4 at both ends of the first contact 1 and the second contact 2, the first contact 1 and the second contact 2 can have better stability after installation.
[0045] Preferably, in one possible implementation, there are two bosses 4, which are respectively arranged on the first contact 1 and the second contact 2, and the two bosses 4 are respectively arranged on both sides of the middle of the moving contact 100; or there are two bosses 4, which are respectively arranged opposite to each other in the middle of the first contact 1 and the second contact 2.
[0046] Preferably, in one possible implementation method, the boss 4 can also be arranged only on the first contact 1 or the second contact 2. For example, there are two bosses 4, which are respectively arranged on both sides of the middle of the first contact 1 or the second contact 2; or there is one boss 4, which is arranged in the middle of the first contact 1 or the second contact 2, all of which fall within the scope of protection of this application.
[0047] In addition, as another embodiment, the clamping gap may be formed between the first contact 1 and the second contact 2 without the boss 4. For example, the middle portion of the first contact 1 may be bent and raised toward the second contact 2 to form a first mounting portion, the first mounting portion being parallel to the ends of the first contact 1 and located in different planes; and / or the middle portion of the second contact 2 may be bent and raised toward the first contact 1 to form a second mounting portion, the second mounting portion being parallel to the ends of the second contact 2 and located in different planes, the first mounting portion of the first contact 1 and the second mounting portion of the second contact 2 being in close contact, and the ends of the first contact 1 and the second contact being spaced apart to form a clamping gap.
[0048] Preferably, Figure 3a As shown, a third groove 37 may be further formed on the side of the first contact 1 and the second contact 2 , and the side portion 33 of the latch 3 is located in the third groove 37 , so that the third groove 37 limits the movement of the latch 3 in the first direction.
[0049] Preferably, Figure 1a 、 Figure 3a and Figure 3b As shown, the side edges of both ends of the first contact 1 and the second contact 2 can be raised to provide an arc-shaped protrusion 5. The arc-shaped protrusion 5 of the first contact 1 and the arc-shaped protrusion 5 of the second contact 2 are arranged opposite to each other and the distance between them is greater than the distance of the clamping gap between the first contact 1 and the second contact 2. By providing the arc-shaped protrusion 5 at the ends of the first contact 1 and the second contact, the opening angle thereof can be greater than the distance of the clamping gap between the first contact 1 and the second contact 2, thereby making it more convenient for the moving contact 100 to be plugged into the static contact.
[0050] Furthermore, both sides of the first contact 1 and the second contact 2 are provided with an arc-shaped protrusion 5, or one side of the first contact 1 and the second contact 2 is provided with an arc-shaped protrusion 5. The arc-shaped protrusion 5 conforms to the rotation direction of the movable contact 100 and is plugged and connected with the static contact. When the movable contact 100 rotates clockwise or counterclockwise to be plugged and connected with the static contact, the arc-shaped protrusion 5 is provided on one side of the first contact 1 and the second contact 2. The movable contact 100 can be connected with the static contact by rotating clockwise or counterclockwise. In this case, the arc-shaped protrusion 5 is provided on both sides of the first contact 1 and the second contact 2, respectively, meeting the conditions for connecting with the static contact by either clockwise or counterclockwise rotation.
[0051] Of course, in some less desirable embodiments, the arcuate protrusions 5 may not be arranged opposite each other. They may be arranged on only one side, or only on the first contact 1 or the second contact 2, thereby reducing production costs. Therefore, the connection relationship between the arcuate protrusion 5 and the movable contact 100 can have a variety of embodiments. All of the above embodiments that can be devised by those skilled in the art based on the existing technology are within the scope of protection of this application. Furthermore, the arcuate protrusion 5 may not be an absolute arcuate structure, as long as it facilitates insertion with the static contact and achieves the same technical effect. These embodiments are within the scope of protection of this application and will not be elaborated on here.
[0052] 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.
[0053] 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), wherein the movable contact (100) comprises a first contact (1) and a second contact (2) arranged opposite to each other, wherein both ends of the first contact (1) and the second contact (2) have a clamping gap for clamping a stationary contact, and wherein: The movable contact (100) further comprises at least two elastic snap-fit parts (3), wherein at least two of the snap-fit parts (3) respectively clamp the first contact (1) and the second contact (2), and the snap-fit part (3) comprises an upper part (31) and a lower part (32) arranged at a relative interval, and a side part (33) connecting the upper part (31) and the lower part (32), wherein the side part (33) is opposite to the side edges of the first contact (1) and the second contact (2), and the upper part (31) and the lower part (32) are arranged on the opposite sides of the first contact (1) and the second contact (2) to clamp the first contact (1) and the second contact (2).
2. The switch contact according to claim 1, characterized in that: The movable contact (100) comprises two latches (3), which are respectively clamped on both sides of the middle of the length direction of the first contact (1) and the second contact (2), and the openings of the two latches (3) face opposite directions.
3. The switch contact according to claim 1 or 2, characterized in that: The upper portion (31) and the side portion (33) are in an acute angle structure, and the lower portion (32) and the side portion (33) are in an acute angle structure.
4. The switch contact according to claim 3, characterized in that: The ends of the upper portion (31) and the lower portion (32) of the latch (3) are respectively provided with first limiting portions (34) opposite to each other, and the first contact (1) and the second contact (2) are provided with second limiting portions (35) for cooperating with the first limiting portions (34) to achieve limiting.
5. The switch contact according to claim 4, characterized in that: The first limiting portion (34) is a first arc-shaped structure that bends inward, the second limiting portion (35) is a first groove, and the first arc-shaped structure extends into the first groove; or the first limiting portion (34) is a second arc-shaped structure that bends outward, and the second arc-shaped structure extends into the first groove.
6. The switch contact according to claim 4, characterized in that: The second limiting portion (35) is located at the center of the first contact (1) and the second contact (2) in the width direction.
7. The switch contact according to claim 1, characterized in that: At least one boss (4) is provided between the first contact (1) and the second contact (2), and the boss (4) enables the first contact (1) and the second contact (2) to be spaced apart at both ends to form the clamping gap, and the boss (4) is integrally formed with the first contact (1) or the second contact (2).
8. The switch contact according to claim 7, characterized in that: The first contact (1) is provided with the boss (4) at a position corresponding to the first groove on one side facing the second contact (2); the second contact (2) is provided with the boss (4) at a position corresponding to the first groove on one side facing the first contact (1); the boss (4) on the first contact (1) and the boss (4) on the second contact (2) abut against each other so that the first contact (1) and the second contact (2) are spaced apart at both ends to form the clamping gap.
9. The switch contact according to claim 3, characterized in that: A third groove (37) is provided on the side edges of the first contact (1) and the second contact (2), the side portion (33) of the latch (3) is located in the third groove (37), and the third groove (37) limits the latch (3).
10. The switch contact according to claim 1, characterized in that The side protrusions at both ends of the first contact (1) and the second contact (2) are provided with arc-shaped protrusions (5); the arc-shaped protrusions (5) of the first contact (1) and the arc-shaped protrusions (5) of the second contact (2) are arranged opposite to each other, and the distance between them is greater than the distance of the clamping gap between the first contact (1) and the second contact (2).