Switch contact

Abstract

A switch contact comprises at least one elastic piece and a locking shaft penetrating through the middle of a first contact, the middle of a second contact and the middle of the elastic piece, and the at least one elastic piece is installed on the back face, away from the second contact, of the first contact and / or installed on the back face, away from the first contact, of the second contact. The two ends of the elastic piece are connected with the two ends of the first contact and the two ends of the second contact respectively, the locking shaft comprises a protruding blocking part, an installation part and a locking piece, the installation part penetrates through the first contact, the second contact and the middle of the elastic piece, the protruding blocking part and one end of the installation part are connected and integrally formed, and the other end of the installation part is provided with a first installation part. The locking piece is detachably connected with the first installation part, the blocking part and the locking piece protrude out, the first contact, the second contact and the elastic piece are clamped from the two sides, the elastic piece is made to deform, inward clamping force is generated on the first contact and the second contact, the locking piece is arranged to be fixedly installed in cooperation with the first installation part, installation is flexible, and disassembly is convenient.

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 a locking piece is used to lock the middle part of the elastic sheet to generate pressure on the elastic sheet to cause it to deform, thereby increasing the clamping force between the moving contact and the static contact. However, the locking piece in the prior art often adopts an integrated mounting shaft, which has the problems of insufficient installation flexibility and inconvenient disassembly. 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 moving contact, wherein the moving contact comprises a first contact and a second contact, wherein both ends of the first contact and the second contact have a clamping gap for clamping a static contact.

[0008] The movable contact further includes at least one elastic piece and a locking shaft passing through the first contact, the second contact and the middle of the elastic piece.

[0009] At least one of the elastic sheets is mounted on the back surface of the first contact away from the second contact and / or mounted on the back surface of the second contact away from the first contact, and both ends of the elastic sheet in the length direction are provided with opening-shaped structures along the length direction of the elastic sheet, and a boss structure is provided on the first contact and / or the second contact, and the opening-shaped structure is snap-connected to the boss structure;

[0010] The locking shaft includes a protruding blocking portion, a columnar mounting portion and a locking piece. The mounting portion passes through the first contact, the second contact and the middle of the elastic sheet. The protruding blocking portion is connected to one end of the mounting portion and is integrally formed. The other end of the mounting portion is provided with a first mounting portion. The locking piece is detachably connected to the first mounting portion. The protruding blocking portion and the locking piece clamp the elastic sheet from both sides, causing the elastic sheet to deform and generate an inward clamping force on the first contact and the second contact.

[0011] In one possible implementation, the locking member is a locking washer, the first mounting portion is a circular groove, and the locking washer is snapped into the circular groove.

[0012] In one possible implementation, the locking member is a nut, the first mounting portion is an external thread structure, and the nut is rotatably mounted on the external thread structure of the mounting portion.

[0013] In a possible implementation, the moving contact includes two elastic sheets, and the two elastic sheets are respectively installed on two opposite sides of the first contact and the second contact.

[0014] In one possible implementation, the elastic sheet is integrally formed and includes a first section, two second sections and two third sections. The first section is placed in the middle of the first contact or the second contact. The two ends of the first section are bent at a certain angle and connected to one end of the two second sections. The other ends of the two second sections are bent at a certain angle and connected to one end of the two third sections. The other ends of the two third sections are respectively provided with the opening-shaped structure.

[0015] In a possible implementation, a first limiting portion is provided at the other end of the two third segments, and the other end of the two third segments is partially bent and extended in a direction away from the corresponding first contact or second contact.

[0016] In one possible implementation, the middle portion of the first contact relative to one side of the second contact and / or the middle portion of the second contact relative to one side of the first contact is bent and raised to form a contact portion, and the contact portion is parallel to both ends of the first contact and the second contact, and the contact portion forms the clamping gap at both ends of the first contact and the second contact.

[0017] In one possible implementation, the contact portion is provided on a side of the middle portion of the first contact opposite to the second contact, and the contact portion is provided on a side of the middle portion of the second contact opposite to the first contact. The two contact portions are in close contact with and parallel to both ends of the first contact and the second contact.

[0018] In one possible implementation, the side protrusions on both sides 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.

[0019] In a possible implementation, arc-shaped protrusions are provided on both sides of the first contact and the second contact, or an arc-shaped protrusion is provided on one side of the first contact and the second contact.

[0020] In a possible implementation, both sides of the first contact and the second contact are provided with arc-shaped protrusions, or one side of the first contact and the second contact is provided with an arc-shaped protrusion.

[0021] Compared with the prior art, the movable contact of the utility model is provided with an elastic sheet on the back of the first contact and / or the second contact, and then a locking shaft is provided which runs through the first contact, the second contact and the middle of the elastic sheet to limit the first contact, the second contact and the two elastic sheets, and the locking shaft causes the elastic sheet to deform, thereby generating a clamping force on both ends of the first contact and the second contact, so that the clamping gap at both ends of the first contact and the second contact can clamp the static contact, and the locking shaft includes a protruding blocking portion, a columnar structure mounting portion and a locking piece, and the protruding blocking portion cooperates with the locking piece to clamp the first contact and the second contact. The contact, the second contact and the elastic sheet form a whole, which generates an inward clamping force on the first contact and the second contact. A locking piece is provided to cooperate with the first mounting portion for fixed installation, which is flexible to install and easy to disassemble. At the same time, it can also limit the first contact, the second contact and the other end of the middle part of the elastic sheet; and the cooperation of the locking shaft and the elastic sheet can make the clamping gap at both ends of the first contact and the second contact have a better clamping force, generate a greater clamping force on the static contact, thereby reducing the contact internal resistance between the moving contact and the static contact, reducing the internal resistance of the switch, and thus improving the current carrying capacity and temperature rise performance of the disconnector.

[0022] Furthermore, a first limiting portion with an open structure is provided at both ends of the elastic sheet, and a second limiting portion with a corresponding boss structure is provided on the first contact and the second contact. The opening structures at both ends of the elastic sheet are directly clamped to the boss structures of the first contact and the second contact for connection and fixation, which is convenient for installation and easy for disassembly.

[0023] Furthermore, by setting the locking member as a locking washer and setting the first mounting portion on the locking shaft as a circular groove, the locking washer is snapped into the circular groove for limiting and fixing, which makes installation flexible and disassembly convenient.

[0024] Furthermore, by setting the locking member as a nut and setting the first mounting portion on the locking shaft as an external thread structure, the nut is rotatably installed on the external thread structure for limiting and fixing, the installation is simple, and the nut and the external thread can also cooperate to adjust the clamping force applied by the elastic sheet to the first contact and the second contact, providing an adjustable locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of the movable contact of the utility model;

[0026] Figure 2 and Figure 3 This is a schematic diagram of the structure of the movable contact of the utility model after it is unfolded;

[0027] Figure 4 This is a structural diagram of another embodiment of the movable contact of the utility model;

[0028] In the figure: moving contact 100; first contact 1; second contact 2; elastic sheet 3; locking shaft 4; protruding blocking portion 41; mounting portion 42; locking piece 42a; first mounting portion 42b; first limiting portion 31; second limiting portion 32; first section 33; second section 34; third section 35; contact portion 5; arc-shaped protrusion 6. 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] like Figure 1 and Figure 2 The present application provides a switch contact, including a movable contact 100, wherein the movable contact 100 includes a first contact 1 and a second contact 2, wherein both ends of the first contact 1 and the second contact 2 have a clamping gap for clamping a static contact.

[0032] Figure 1 、 Figure 2 and Figure 3 Schematic diagram of the structure of the moving contact 100 is shown. Figure 1 、 Figure 2 and Figure 3 As shown, the movable contact 100 further includes at least one elastic piece 3 and a locking shaft 4 that passes through the first contact 1, the second contact 2, and the middle of the elastic piece 3. At least one elastic piece 3 is installed on the back of the first contact 1 away from the second contact 2 and / or installed on the back of the second contact 2 away from the first contact 1. The two ends of the elastic piece 3 in the length direction are respectively connected to the two ends of the length direction of the first contact 1 or the second contact 2.

[0033] The elastic piece 3 is provided with first limiting portions 31 at both ends, and the first contact 1 and the second contact 2 are provided with second limiting portions 32 that cooperate with the first limiting portions to achieve position limiting. The cooperation between the first limiting portions 31 and the second limiting portions 32 secures the elastic piece 3 to the opposing surfaces of the first contact 1 and the second contact 2, providing an inward clamping force for the first contact 1 and the second contact 2.

[0034] like Figure 1 、 Figure 2 and Figure 4 As shown, the first limiting portion 31 is an opening-shaped structure along the length of the elastic sheet 3, and the second limiting portion 32 is a boss structure. The opening-shaped structure is engaged with the boss structure to achieve the first contact 1 and / or the second contact 2 limiting the elastic sheet 3. The opening-shaped structures at both ends of the elastic sheet 3 are directly engaged with the boss structures of the first contact 1 and the second contact 2 for connection and fixation, which is convenient for installation and easy disassembly.

[0035] The first limiting portion 31 can also be a groove structure or a hole structure, and the groove structure or the hole structure extends into the boss structure to achieve the limiting and fixation of the elastic sheet 3 and the first contact 1 and the second contact 2, wherein the boss structure can be formed by stamping on the back of the first contact 1 and the second contact 2, which is simple to operate and low in cost. Of course, the structures of the first limiting portion 31 and the second limiting portion 32 can also be interchangeable, that is, the first limiting portion 31 is a boss structure, and the second limiting portion 32 is a groove structure or a hole structure opened on the surface of the first contact 1 and the second contact 2, and the boss structure is inserted into the groove structure or the hole structure to achieve the limiting and fixing effect, which all fall within the scope of protection of the present application.

[0036] The locking shaft 4 includes a protruding blocking portion 41, a columnar mounting portion 42 and a locking piece 42a. The mounting portion 42 passes through the middle of the first contact 1, the second contact 2 and the elastic sheet 3. The protruding blocking portion 41 is connected to one end of the mounting portion 42 and is integrally formed. The protruding blocking portion 41 and the mounting portion 42 limit one side of the middle of the first contact 1, the second contact 2 and the elastic sheet 3. The other end of the mounting portion 42 is provided with a first mounting portion 42b. The locking piece 42a is detachably connected to the first mounting portion 42b, limiting the other side of the middle of the first contact 1, the second contact 2 and the elastic sheet 3. The protruding blocking portion 41 and the locking piece 42a clamp the elastic sheet 3 from both sides, causing the elastic sheet 3 to deform, thereby generating an inward clamping force on the first contact 1 and the second contact 2.

[0037] The movable contact 100 of the present invention is provided with an elastic sheet 3 on the back side of the first contact 1 and / or the second contact 2, and then a locking shaft 4 is provided that passes through the middle of the first contact 1, the second contact 2 and the elastic sheet 3 to limit the first contact 1, the second contact 2 and the elastic sheet 3, and the locking shaft 4 causes the elastic sheet 3 to deform, thereby generating a clamping force on the two ends of the first contact 1 and the second contact 2, so that the clamping gap at the two ends of the first contact 1 and the second contact 2 can clamp the static contact, the locking shaft 4 includes a protruding blocking portion 41 and a columnar mounting portion 42 and a locking member 42a, the protruding blocking portion 41 cooperates with the locking member 42a to clamp the first contact 1, the second contact 2 and the elastic sheet 3 to form a whole, and generate an inward clamping force on the first contact 1 and the second contact 2, and the locking member 42a is provided to cooperate with the first mounting portion 42b for fixed installation, which is flexible to install and easy to disassemble, and at the same time, it can also limit the first contact 1, the second contact 2 and the other end of the middle part of the elastic sheet 3.

[0038] The cooperation between the locking shaft 4 and the elastic sheet 3 can make the clamping gap at both ends of the first contact 1 and the second contact 2 have better clamping force, generate greater clamping force on the static contact, thereby reducing the contact internal resistance between the moving contact 100 and the static contact, reducing the internal resistance of the switch, and thus improving the current carrying capacity and temperature rise performance of the isolating switch.

[0039] Preferably, Figure 1 、 Figure 2 and Figure 3As shown, the locking member 42a of this embodiment is a locking washer, the first mounting portion 42b is a circular groove, the mounting portion 42 passes through the middle of the first contact 1, the second contact 2, and the elastic piece 3, the protruding blocking portion 41 protrudes radially from the mounting portion 42, and the circular groove extends to allow the locking washer to snap into the circular groove, thereby clamping the first contact 1, the second contact 2, and the elastic piece 3 together with the protruding blocking portion 41. The elastic piece 3 deforms to achieve the fixation of the first contact 1, the second contact 2, and the elastic piece 3 in the thickness direction of the moving contact 100. The locking washer is limited in position and can be snapped into the circular groove, which makes installation flexible and easy to disassemble.

[0040] Preferably, Figure 4 As shown, the locking member 42a can also be a nut with an internal thread structure (not shown in the figure), and the first mounting portion 42b can be an external thread structure. The nut is rotatably mounted on the external thread structure of the mounting portion 42, and the nut and the protruding blocking portion 41 jointly clamp and fix the first contact 1, the second contact 2 and the elastic sheet 3, and the nut is used to limit the position. The nut and the external thread can also cooperate to adjust the clamping force applied by the elastic sheet 3 to the first contact 1 and the second contact 2, thereby providing an adjustable locking function.

[0041] Preferably, Figure 1 As shown, the moving contact 100 includes two elastic pieces 3, which are respectively installed on the two opposite sides of the first contact 1 and the second contact 2, providing an inward clamping force on the two sides in the thickness direction of the moving contact 100, thereby producing a better clamping effect on the first contact 1 and the second contact 2. At the same time, the clamping gap at both ends of the first contact 1 and the second contact 2 can also produce a better clamping force on the static contact. Of course, only one elastic piece 3 can also be provided, and one elastic piece 3 can be provided on the back of the first contact 1 away from the second contact 2, or one elastic piece 3 can be provided on the back of the second contact 2 away from the first contact 1. Preferably, as Figure 1As shown, the elastic sheet 3 is integrally formed and bent, including a first section 33, two second sections 34 and two third sections 35. The first section 33 is placed in the middle of the first contact 1 and the second contact 2, and the two ends of the first section 33 are respectively bent at a certain angle and connected to one end of the two second sections 34, and the first section 33 is bent in a direction close to the first contact 1 and the second contact 2, and the other ends of the two second sections 34 are respectively bent at a certain angle and connected to one end of the two third sections 35, and the other ends of the two third sections 35 are respectively connected to the two ends of the first contact 1 or the second contact 2, and the other ends of the two third sections 35 are provided with the first limiting portion 31. In a preferred embodiment, the other ends of the two third sections 35 can also be bent and extended in a direction away from the corresponding first contact 1 or the second contact 2 to avoid the end of the third section 35 having a sharp portion and directly contacting the surface of the first contact 1 and the second contact 2, damaging the outer surface of the first contact 1 and the second contact 2, and affecting the aesthetics of the moving contact 100.

[0042] The locking shaft 4 passes through the first section 33 of the elastic sheet 3, so that the middle part of the first section 33 can be tightly attached to the middle part of the first contact 1 or the second contact 2. Of course, in another possible implementation method, the first section 33 can also be bent in the direction away from the first contact 1 and the second contact 2. When the locking shaft 4 clamps the first contact 1, the second contact 2 and the elastic sheet 3, there is a gap between the first section 33 and the middle part of the first contact 1 or the second contact 2, which also falls within the scope of protection of this application.

[0043] Preferably, Figure 1 As shown, the middle part of the first contact 1 relative to one side of the second contact 2 and / or the middle part of the second contact 2 relative to one side of the first contact 1 is bent and raised to form a contact portion 5. The contact portion 5 is parallel to both ends of the first contact 1 and the second contact 2. The contact portion 5 forms the clamping gap at both ends of the first contact 1 and the second contact 2, which can be clamped and connected with the static contact.

[0044] Further, such as Figure 1 As shown, the contact portion 5 is provided on a side of the middle of the first contact 1 opposite to the second contact 2, and the contact portion 5 is provided on a side of the middle of the second contact 2 opposite to the first contact 1. The two contact portions 5 are tightly attached to and parallel to the two ends of the first contact 1 and the second contact 2, and the structure is symmetrical and beautiful.

[0045] Furthermore, in another possible implementation, the contact portion 5 may be provided on a side of the middle portion of the first contact 1 opposite to the second contact 2, the contact portion 5 being parallel to both ends of the first contact 1, the contact portion 5 being in close contact with the second contact 2, and the clamping gap being formed between the two ends of the first contact 1 and the second contact 2; or the contact portion 5 may be provided on a side of the middle portion of the second contact 2 opposite to the first contact 1, the contact portion 5 being parallel to both ends of the second contact 2, the contact portion 5 being in close contact with the first contact 1, and the clamping gap being formed between the two ends of the first contact 1 and the second contact 2. All of these fall within the scope of protection of this application.

[0046] In other feasible embodiments, the first contact 1 and the second contact 2 may also not be provided with the contact portion 5, the first contact 1 and the second contact 2 are arranged in parallel, and at least one boss may be provided between the first contact 1 and the second contact 2, wherein the boss can be formed by stamping on the back of the first contact 1 and the second contact 2, which is simple to operate and low in cost. The first contact 1 and the second contact 2 are arranged at intervals by the boss, and a clamping gap for clamping the static contact is formed at both ends thereof. In this case, the first section 33 of the elastic sheet 3 is bent in a direction away from the first contact 1 and the second contact 2, so that there is a deformation gap between the first section 33 and the first contact 1 or the second contact 2, so that it can be deformed, which all fall within the scope of protection of the present application.

[0047] Preferably, Figure 1 and Figure 4 As shown, the side edges of both sides of the first contact 1 and the second contact 2 can be raised to provide an arc-shaped protrusion 6, and the arc-shaped protrusion 6 of the first contact 1 and the arc-shaped protrusion 6 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 relatively arranging the arc-shaped protrusions 6 on both side edges of the first contact 1 and the second contact 2, the distance between them is greater than the distance of the clamping gap between the first contact 1 and the second contact 2, that is, the opening angle of the clamping gap at both ends of the first contact 1 and the second contact 2 is increased, so that the moving contact 100 is easy to be plugged into the static contact during use.

[0048] Furthermore, arc-shaped protrusions 6 are provided on both sides of the first contact 1 and the second contact 2, or on one side of each of the first contact 1 and the second contact 2. The arc-shaped protrusions 6 conform to the rotation direction of the movable contact 100 and are plug-fitted with the static contact. When the movable contact 100 rotates clockwise or counterclockwise to be plug-fitted with the static contact, the arc-shaped protrusions 6 are provided on one side of the first contact 1 and the second contact 2. The movable contact 100 can be connected to the static contact by rotating clockwise or counterclockwise. In this case, the arc-shaped protrusions 6 are provided on both sides of the first contact 1 and the second contact 2, respectively, satisfying the conditions for connecting to the static contact by either clockwise or counterclockwise rotation.

[0049] Of course, in some less desirable embodiments, the arcuate protrusions 6 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 6 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 6 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.

[0050] 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.

[0051] 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), 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 one elastic piece (3) and a locking shaft (4) passing through the first contact (1), the second contact (2) and the middle of the elastic piece (3). At least one of the elastic sheets (3) is mounted on the back side of the first contact (1) away from the second contact (2) and / or is mounted on the back side of the second contact (2) away from the first contact (1); both ends of the elastic sheet (3) in the length direction are provided with opening-shaped structures along the length direction of the elastic sheet (3); a boss structure is provided on the first contact (1) and / or the second contact (2); and the opening-shaped structure is snap-connected to the boss structure; The locking shaft (4) comprises a protruding blocking portion (41), a columnar mounting portion (42) and a locking member (42a); the mounting portion (42) passes through the middle of the first contact (1), the second contact (2) and the elastic sheet (3); the protruding blocking portion (41) is connected to one end of the mounting portion (42) and is integrally formed; the other end of the mounting portion (42) is provided with a first mounting portion (42b); the locking member (42a) is detachably connected to the first mounting portion (42b); the protruding blocking portion (41) and the locking member (42a) clamp the elastic sheet (3) from both sides, causing the elastic sheet (3) to deform and generate an inward clamping force on the first contact (1) and the second contact (2).

2. The switch contact according to claim 1, characterized in that The locking member (42a) is a locking washer, the first mounting portion (42b) is a circular groove, and the locking washer is inserted into the circular groove.

3. The switch contact according to claim 1, characterized in that The locking member (42a) is a nut, the first mounting portion (42b) is an external thread structure, and the nut is rotatably mounted on the external thread structure of the mounting portion (42).

4. The switch contact according to claim 1, characterized in that: The movable contact (100) comprises two elastic sheets (3), and the two elastic sheets (3) are respectively mounted on two opposite sides of the first contact (1) and the second contact (2).

5. The switch contact according to claim 1, characterized in that The elastic sheet (3) is integrally formed and comprises a first section (33), two second sections (34) and two third sections (35); the first section (33) is placed in the middle of the first contact (1) or the second contact (2); the two ends of the first section (33) are respectively bent at a certain angle and connected to one end of the two second sections (34); the other ends of the two second sections (34) are respectively bent at a certain angle and connected to one end of the two third sections (35); the other ends of the two third sections (35) are respectively provided with the opening-shaped structure.

6. The switch contact according to claim 5, characterized in that: The other ends of the two third sections (35) are provided with a first limiting portion (31), and the other ends of the two third sections (35) are bent and extended in a direction away from the corresponding first contact (1) or second contact (2).

7. The switch contact according to claim 1, characterized in that: The middle of the first contact (1) is bent and raised relative to one side of the second contact (2) and / or the middle of the second contact (2) is bent and raised relative to one side of the first contact (1) to form a contact portion (5). The contact portion (5) is parallel to both ends of the first contact (1) and the second contact (2). The contact portion (5) forms the clamping gap at both ends of the first contact (1) and the second contact (2).

8. The switch contact according to claim 7, characterized in that: The contact portion (5) is provided on one side of the middle portion of the first contact (1) opposite to the second contact (2), and the contact portion (5) is provided on one side of the middle portion of the second contact (2) opposite to the first contact (1). The two contact portions (5) are in close contact with and parallel to both ends of the first contact (1) and the second contact (2).

9. The switch contact according to claim 1, characterized in that The side protrusions on both sides of the first contact (1) and the second contact (2) are provided with arc-shaped protrusions (6); the arc-shaped protrusions (6) of the first contact (1) and the arc-shaped protrusions (6) 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).

10. The switch contact according to claim 9, characterized in that Both sides of the first contact (1) and the second contact (2) are provided with arc-shaped protrusions (6), or one side of the first contact (1) and the second contact (2) is provided with an arc-shaped protrusion (6).

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