Stationary contact components and contact switches

Abstract

The present disclosure relates to a static contact assembly and a contact switch, and belongs to the field of switch technology. The static contact assembly includes a static contact and a fixed member, and the static contact includes an extension portion and a first connection portion; the first connection portion is connected to the extension portion and is bent toward the first side of the extension portion, and the end of the first connection portion points to the extension portion or to the main body of the first connection portion; the contact surface of the static contact is on the second side of the extension portion, wherein the first side and the second side of the extension portion are relative in the thickness direction; the fixed member has a second connection portion, the shape of the second connection portion matches the shape of the first connection portion, and the first connection portion is snapped on the second connection portion. According to the present disclosure, during assembly, it is only necessary to push the first connection portion onto the second connection portion of the fixed member, so that the first connection portion can wrap the second connection portion, and the first connection portion and the second connection portion can be snapped together, which is simple to assemble and is conducive to improving the assembly efficiency of the static contact assembly.

Description

Technical Field

[0001] The present disclosure relates to the technical field of switches, and in particular to a stationary contact assembly and a contact switch. Background Art

[0002] A contact switch is a switch that is turned on by a moving contact touching a static contact. The contact switch can be used in a wall push switch, where the moving contact touches the static contact by pressing the panel of the wall push switch. The contact switch can also be used in a wall socket, where the moving contact touches the static contact by inserting a pin into the socket of the wall socket.

[0003] In order to reduce the number of bounces of the moving contact and reduce arcing during the contact between the moving contact and the static contact, the static contact of the static contact assembly is usually flexibly assembled so that the collision between the moving contact and the static contact is a flexible collision. For example, when the moving contact touches the static contact, the static contact plate where the static contact is located will swing.

[0004] The stationary contact is a flexible assembly, which results in that when the stationary contact is assembled in the housing of the contact switch, the flexible stationary contact is prone to rebound, further resulting in a low assembly efficiency of the stationary contact. Utility Model Content

[0005] In order to solve the problems of the prior art, the present disclosure provides a stationary contact assembly and a contact switch. The technical solution is as follows:

[0006] In a first aspect, a stationary contact assembly is provided, the stationary contact assembly comprising a stationary contact member and a fixing member, the stationary contact member comprising an extension portion and a first connecting portion;

[0007] The first connecting portion is connected to the extension portion and is bent toward a first side of the extension portion, and an end of the first connecting portion points to the extension portion or to a main body of the first connecting portion;

[0008] The contact surface of the stationary contact member is on the second side of the extension portion, wherein the first side and the second side of the extension portion are opposite to each other in the thickness direction;

[0009] The fixing member has a second connecting portion, the shape of the second connecting portion matches the shape of the first connecting portion, and the first connecting portion is buckled on the second connecting portion.

[0010] In a possible implementation, the stationary contact member includes a stationary contact plate and a spring;

[0011] The elastic sheet includes the extension portion and the first connecting portion. The second side of the extension portion is fixed to the stationary contact plate. The contact surface of the stationary contact member is on the side of the stationary contact plate facing away from the extension portion.

[0012] In a possible implementation manner, an end of the first connecting portion points to the extending portion, and there is a distance between the end of the first connecting portion and the extending portion.

[0013] In a possible implementation, the first connection portion includes a plurality of flat sheets connected in sequence, or the first connection portion is an arc sheet, or the first connection portion includes a flat sheet and an arc sheet connected to each other.

[0014] In a possible implementation, the second connection portion has a guide structure on one side along an assembly direction, the guide structure being used to guide the first connection portion to be buckled onto the second connection portion, and the assembly direction is a direction in which the stationary contact is installed into the fixing member.

[0015] In a possible implementation, the fixing member has a supporting portion, the extending portion abuts against the supporting portion, and the supporting portion is used as a swing point for the extending portion to swing.

[0016] In a possible implementation, the support portion has an arcuate surface facing the extension portion, and the extension portion abuts against the arcuate surface of the support portion, or,

[0017] The supporting portion has a sharp edge facing the extending portion, and the extending portion abuts against the sharp edge of the supporting portion.

[0018] In a possible implementation, the support portion has a guide structure on one side along an assembly direction, and the guide structure is used to guide the extension portion to abut against the support portion, and the assembly direction is a direction in which the static contact is installed into the fixing member.

[0019] In a possible implementation, the inner wall of the first connecting portion has a first positioning structure, and the outer wall of the second connecting portion has a second positioning structure;

[0020] When the first positioning structure and the second positioning structure cooperate with each other, the first connecting portion is buckled onto the second connecting portion and is buckled into place.

[0021] In a possible implementation manner, there are multiple static contacts.

[0022] In a second aspect, a contact switch is provided, wherein the contact switch comprises the stationary contact assembly described in the first aspect.

[0023] In the solution shown in the present disclosure, in the process of fixing the stationary contact member on the fixing member, it is only necessary to push the first connection part into the second connection part of the fixing member so that the first connection part can cover the second connection part, thereby realizing the buckling of the first connection part and the second connection part. Since the first connection part covers the second connection part, there is no need to worry about rebound during assembly. Therefore, the assembly of the stationary contact assembly is relatively simple, which is conducive to improving the assembly efficiency of the stationary contact assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is a structural schematic diagram of a static contact provided by an embodiment of the present disclosure;

[0026] Figure 2 is a structural schematic diagram of a fixing member provided by an embodiment of the present disclosure;

[0027] Figure 3 is a structural schematic diagram of a static contact assembly provided by an embodiment of the present disclosure;

[0028] Figure 4 is a schematic structural diagram of a spring provided by an embodiment of the present disclosure;

[0029] Figure 5 is a schematic structural diagram of a spring provided by an embodiment of the present disclosure;

[0030] Figure 6 is a schematic structural diagram of a spring provided by an embodiment of the present disclosure;

[0031] Figure 7 is a schematic diagram of a stationary contact member and a fixing member before being assembled according to an embodiment of the present disclosure;

[0032] Figure 8 It is a structural schematic diagram of a static contact assembly provided in an embodiment of the present disclosure.

[0033] Description of Reference Numerals

[0034] 1. Stationary contact; 11. Stationary contact plate; 12. Stationary contact point; 13. Shrapnel.

[0035] 131, extension part; 132, first connection part; 1321, flat sheet; 1322, arc sheet; 1323, first positioning structure.

[0036] 2. Fixing member; 20. Main body; 21. Second connecting portion; 22. Support portion; 211. Second positioning structure. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0038] The present embodiment relates to a contact switch, which includes a moving contact and a stationary contact, and is a switch that is connected by the moving contact touching the stationary contact and is disconnected by the moving contact and the stationary contact separating.

[0039] The contact switch can be used in a push switch, such as a wall push switch, where the panel of the push switch is pressed to cause the moving contact to touch and separate from the static contact. The contact switch can also be used in a socket, such as a wall socket, where the moving contact to touch and the static contact to touch by inserting a plug into the socket, and the moving contact to separate from the static contact by pulling the plug out of the socket. The present embodiment does not limit the application scenario of the contact switch.

[0040] In order to achieve the flexible contact between the moving contact and the stationary contact, the stationary contact is usually mounted on the fixing part through an inverted L-shaped spring sheet. For example, the transverse part of the inverted L-shaped spring sheet has a positioning hole, and the fixing part has a positioning column. The transverse part of the inverted L-shaped spring sheet is positioned on the fixing part, and then the transverse part of the inverted L-shaped spring sheet is riveted to the fixing part. Because the inverted L-shaped spring sheet has elasticity, the transverse part of the inverted L-shaped spring sheet has the possibility of rebounding at any time before and during riveting, and the positioning hole and the positioning column are separated, resulting in low assembly efficiency of the stationary contact component.

[0041] To this end, this embodiment provides a static contact assembly, the connection portion of which forms a buckle, which can be directly buckled on the fixing member, and this assembly method is simple and not prone to falling off. The features of the static contact assembly will be described in detail below.

[0042] like Figure 1 FIG. 1 is a schematic diagram of the structure of the static contact assembly shown in this embodiment, referring to FIG. Figure 1 As shown, the stationary contact 1 includes a stationary contact point 12 and a stationary contact plate 11. The stationary contact point 12 is generally made of silver, so it is also called a silver point. The stationary contact plate 11 is generally made of copper, so it is also called a copper sheet.

[0043] Continue to refer Figure 1 As shown, the static contact 12 is fixed on the static touch plate 11, such as the static contact 12 is fixed at a position close to the first end of the static touch plate 11. The contact surface of the static contact 12 is located on the first side of the static touch plate 11, wherein the first side of the static touch plate 11 is one side of the static touch plate 11 in the thickness direction.

[0044] It should be noted that the stationary contact plate 11 and the stationary contact point 12 may also be integrated together. For example, the stationary contact point 12 may be a convex bump on the surface of the stationary contact plate 11. The surface of the convex bump serves as the contact surface of the stationary contact 1 and the surface of the convex bump may also be silver-plated.

[0045] In this embodiment, whether the static contact plate 11 and the static contact point 12 are two independent components or integrated together is not limited. For the convenience of description, the static contact plate 11 and the static contact point 12 are as follows: Figure 1 The stationary contact plate 11 and the stationary contact point 12 are two independent component examples. The stationary contact point 12 is fixed on one side of the stationary contact plate 11 and is close to the first end of the stationary contact plate 11 .

[0046] In one example, in order to simplify the assembly of the stationary contact, continue to refer to Figure 1 As shown, the static contact 1 includes an extension portion 131 and a first connection portion 132, wherein the first connection portion 132 is connected to the extension portion 131 and bent toward the first side of the extension portion 131, and the end of the first connection portion 132 points to the extension portion 131 or to the main body of the first connection portion 132, so that the first connection portion 132 is rolled up or forms a buckle.

[0047] The extending portion 131 and the first connecting portion 132 may be connected together by integral molding.

[0048] like Figure 2 The structure diagram of the fixing member 2 is shown in FIG. Figure 2 As shown, the fixing member 2 has a second connecting portion 21 , wherein the second connecting portion 21 may be a protruding structure on the main body portion 20 of the fixing member 2 , the protruding structure is columnar, and the contour shape of the second connecting portion 21 is adapted to the shape enclosed by the first connecting portion 132 .

[0049] In this way, Figure 3 As shown, the first connection portion 132 can be buckled onto the second connection portion 21 , such as the first connection portion 132 wraps all or most of the second connection portion 21 .

[0050] In the process of fixing the stationary contact 1 on the fixing member 2, the first connecting portion 132 is aligned with the second connecting portion 21, and then the first connecting portion 132 is pushed onto the second connecting portion 21 along the protruding direction of the second connecting portion 21 relative to the main body portion 20, so that the first connecting portion 132 wraps around the second connecting portion 21, thereby realizing the first connecting portion 132 being buckled on the second connecting portion 21.

[0051] In one example, the area enclosed by the inner wall of the first connection part 132 is slightly smaller than the area enclosed by the outer wall of the second connection part 21. Since the first connection part 132 has a certain elasticity, the first connection part 132 can still be inserted into the outside of the second connection part 21 and can be firmly stuck outside the second connection part 21.

[0052] It should be pointed out that in order to enable the stationary contact 1 to swing, Figure 3 As shown, the stationary contact member 1 needs to be suspended, that is, the stationary contact member 1 does not contact other components in front and behind the swing trajectory, so that the extension portion 131 can swing with the stationary contact plate 11. Figure 3 As shown, there is a distance between the first side of the extension portion 131 facing away from the stationary contact 12 and the fixing member 2 , and the distance is used to provide a movable space for the swing of the extension portion 131 .

[0053] It can be seen that in the process of fixing the static contact 1 on the fixing member 2, it is only necessary to push the first connecting part 132 onto the second connecting part 21 of the fixing member 2 so that the first connecting part 132 wraps the second connecting part 21, thereby achieving the snap fit of the first connecting part 132 and the second connecting part 21. Therefore, the assembly of the static contact component is relatively simple, which is beneficial to improving the assembly efficiency of the contact switch where the static contact component is located.

[0054] In one example, because the material of the static touch plate 11 is metallic copper and has a certain ductility, the extension portion 131 and the first connection portion 132 can be formed on the static touch plate 11. For example, the static touch plate 11 includes the extension portion and the first connection portion described above, wherein the moving contact can be fixed on the extension portion, and the contact surface of the moving contact is located on the second side of the extension portion facing away from the first connection portion 132.

[0055] In another example, Figure 1 As shown, the extension portion 131 and the first connecting portion 132 can also be formed on the spring sheet 13, so the static contact member 1 not only includes the static contact plate 11 and the static contact point 12, but also includes the spring sheet 13, wherein the spring sheet 13 can also be called a spring sheet, which is made of metal, is relatively thin, and has good ductility and elasticity.

[0056] Then, reference Figure 1 As shown, the second side of the extension portion 131 facing away from the first connection portion 132 is fixed to the stationary contact plate 11. Since the stationary contact 12 swings with the help of the elasticity of the extension portion 131, the extension portion 131 and the stationary contact 12 can be arranged at the same end of the stationary contact plate 11. For example, the stationary contact 12 is near the first end of the stationary contact plate 11, and the extension portion 131 is fixed to the position of the stationary contact plate 11 near the first end. Figure 1 As shown, the extension portion 131 and the stationary contact plate 11 are riveted via the stationary contact point 12 , and are riveted at a position of the stationary contact plate 11 close to the first end.

[0057] The present embodiment does not specifically limit whether the extension portion 131 and the first connection portion 132 are formed on the stationary touch plate 11 or on the spring sheet 13 . Since forming the extension portion 131 and the first connection portion 132 on the spring sheet 13 can exert better elasticity, the following example takes forming the extension portion 131 and the first connection portion 132 as an example.

[0058] Regarding the features of the first connecting portion 132. In one example, Figure 4 As shown, the first connection portion 132 is formed by a plurality of flat sheets 1321 connected in sequence. Figure 4 As shown, the first connecting portion 132 includes three flat sheets 1321, the first flat sheet is connected to the extension portion 131, and the first flat sheet is bent toward one side of the extension portion 131, the second flat sheet is connected to the first flat sheet, and the second flat sheet is bent toward one side of the first flat sheet, the third flat sheet is connected to the second flat sheet, and the third flat sheet is bent toward one side of the second flat sheet, and the end of the third flat sheet points to the extension portion 131.

[0059] In order not to interfere with the swing of the extension portion 131 , a certain distance is provided between the end of the first connection portion 132 , that is, the end of the third flat piece, and the extension portion 131 .

[0060] Of course, in the scheme in which the first connecting portion 132 is formed by a plurality of flat sheets 1321 connected in sequence, the first connecting portion 132 may also include more flat sheets 1321, for example, may include four flat sheets 1321, the fourth flat sheet is connected to the third flat sheet, and the fourth flat sheet is bent toward one side of the third flat sheet, and the end of the fourth flat sheet, that is, the end of the first connecting portion 132, points to the body of the first connecting portion 132, for example, the end of the fourth flat sheet points to the first flat sheet.

[0061] Of course, the first connecting portion 132 may also include more flat sheets, and these multiple flat sheets are rolled inwards in sequence according to the method described above.

[0062] It should be noted that, in the solution where the first connection portion 132 includes a plurality of flat sheets, the second connection portion 21 may be a columnar polygon, for example, a columnar quadrilateral. The shape of the second connection portion 21 is related to the shape of the area surrounded by the first connection portion 132 .

[0063] In another example, Figure 5 As shown, the first connection portion 132 may also be formed by an arc piece, and the end of the arc piece may point to the extension portion 131 or to the body of the arc piece.

[0064] For example, refer to Figure 5As shown, the first connection portion 132 is an unclosed arc piece, the central angle of which is greater than 180 degrees and less than 360 degrees, and the end of the first connection portion 132 points to the extension portion 131. For another example, the first connection portion 132 can also be a closed arc piece, which is rolled up multiple times, and the end of the first connection portion 132 can point to any direction.

[0065] It should be pointed out that in the solution where the first connection portion 132 is an arc piece, the second connection portion 21 is cylindrical, and the first connection portion 132 in the form of an arc piece is rolled onto the second connection portion 21 in the form of a cylinder.

[0066] In another example, Figure 6 As shown, the first connecting portion 132 may also include a flat piece 1321 and an arc piece 1322. For example, the first connecting portion 132 includes two flat pieces 1321 and one arc piece 1322. The first flat piece is connected to the strip-shaped portion, the first flat piece is bent toward one side of the strip-shaped portion and connected to the arc piece, the other end of the arc piece is connected to the second flat piece, and the end of the second flat piece points to the extension portion 131.

[0067] Of course, if Figure 6 The first connecting portion 132 shown may also include more flat pieces and more arc pieces, which are not listed one by one in this embodiment.

[0068] In one example, when the moving contact touches the stationary contact 12, the extension portion 131 swings with the stationary contact plate 11. Figure 2 As shown, the fixing member 2 further has a supporting portion 22 , which is located on one side of the second connecting portion 21 close to the extending portion 131 , and the extending portion 131 of the spring 13 abuts against the supporting portion 22 , wherein the supporting portion 22 serves as a swing fulcrum for the extending portion 131 .

[0069] In one example, in order to make the extension portion 131 easier to swing, accordingly, Figure 3 As shown, the extension portion 131 is in contact with the support portion 22 at a position close to the first connection portion 132 , and the support portion 22 may be a protrusion of the second connection portion 21 protruding toward the extension portion 131 .

[0070] refer to Figure 2 As shown, the surface of the support portion 22 away from the second connecting portion 21 is an arc-shaped surface. After the stationary contact member 1 and the fixing member 2 are assembled, refer to Figure 3 As shown, the arc surface faces the extension portion 131 , and then the extension portion 131 abuts against the arc surface of the support portion 22 , which is more conducive to the swinging movement of the extension portion 131 .

[0071] Alternatively, in another example, the support portion 22 has a sharp edge at a position away from the second connecting portion 21 , and after the stationary contact 1 and the fixing member 2 are assembled, the sharp edge faces the extension portion 131 , and then the extension portion 131 abuts against the sharp edge of the support portion 22 .

[0072] In this way, when the stationary contact 1 is pushed into the fixing member 2 , the surface of the extension portion 131 facing away from the stationary contact 12 abuts against the support portion 22 , and the first connection portion 132 is wrapped around the second connection portion 21 .

[0073] In one example, in order to make the first connection portion 132 smoothly stuck on the second connection portion 21, accordingly, refer to Figure 2 As shown, the second connecting portion 21 has a guide structure on one side of the assembly direction, wherein the assembly direction is the direction in which the stationary contact 1 is installed into the fixing member 2, referring to Figure 2 As shown, the assembly direction is consistent with the protruding direction of the second connecting portion 21 relative to the body portion 20 .

[0074] Similarly, in order to smoothly push the spring piece 13 onto the fixing member 2, refer to Figure 2 As shown, the second connecting portion 21 has a guide structure on one side along the assembly direction, and the supporting portion 22 also has a guide structure on one side along the assembly direction.

[0075] In this way, in the process of installing the static contact member 1 on the fixing member 2, first, the area enclosed by the first connecting portion 132 and the extension portion 131 is aligned with the second connecting portion 21 and the supporting portion 22. Then, under the guidance of the guide structure of the second connecting portion 21 and the guide structure of the supporting portion 22, the area enclosed by the extension portion 131 and the first connecting portion 132 can be smoothly inserted outside the second connecting portion 21 and the supporting portion 22. After the spring piece 13 is pushed to the bottom or into place, the first connecting portion 132 can be clamped on the second connecting portion 21 of the fixing member 2.

[0076] In one example, in order to enable the assembler to better judge whether the spring piece 13 is installed in place, accordingly, Figure 7 As shown, the inner wall of the first connecting part 132 has a first positioning structure 1323, and the outer wall of the second connecting part 21 has a second positioning structure 211. Then, in the process of installing the static contact part 1 into the fixing part 2, when the first positioning structure 1323 cooperates with the second positioning structure 211, it means that the first connecting part 132 has been buckled on the second connecting part 21 and buckled into place.

[0077] The cooperation between the first positioning structure 1323 and the second positioning structure 211 not only helps to determine whether the spring piece 13 is properly assembled, but also helps to further limit and fix the first connecting portion 132 on the second connecting portion 21 of the fixing member 2.

[0078] In one example, if Figure 7 As shown, the first positioning structure 1323 can be a convex bump on the inner wall of the first connecting portion 132, and the second positioning structure 211 can be a groove on the surface of the second connecting portion 21. When the convex bump is inserted into the groove, it indicates that the first positioning structure and the second positioning structure are matched.

[0079] In an example, the number of the stationary contact member 1 may be one, and then the number of the stationary contact point 12 , the stationary contact plate 11 and the spring 13 are all one.

[0080] In another example, the number of the stationary contact members 1 may be multiple, and then the number of the stationary contacts 12, the stationary contact plates 11 and the springs 13 may also be multiple, and the numbers of the three are equal.

[0081] For example, Figure 8 As shown, the number of the stationary contacts 1 is two, and thus the number of the stationary contact plates 11, the stationary contacts 12 and the springs 13 are all two.

[0082] In the solution where there are multiple static contacts 12, static contact plates 11 and springs 13, the springs 13 not only play the role of allowing the static contact plates 11 to swing and promoting the flexible collision between the moving contacts and the static contacts, but also play the role of absorbing tolerances. For example, in the solution where there are multiple static contacts 12, it is difficult for the contact surfaces of the multiple static contacts 12 to be coplanar due to processing errors and assembly errors. However, due to the existence of the springs 13, even if the contact surfaces of the multiple static contacts 12 are not coplanar, when the moving contacts touch the static contacts, each moving contact can touch the corresponding static contact, and there will be no virtual contact caused by some moving contacts touching the static contacts and other moving contacts not touching the static contacts.

[0083] In the disclosed embodiment, in the process of fixing the stationary contact member to the fixing member, it is only necessary to push the first connection part into the second connection part of the fixing member so that the first connection part can cover the second connection part, thereby realizing the buckling of the first connection part and the second connection part. Therefore, the assembly of the stationary contact assembly is relatively simple, which is conducive to improving the assembly efficiency of the stationary contact assembly.

[0084] The embodiment of the present disclosure further provides a contact switch, which includes the above-mentioned static contact assembly. The contact switch can be applied to a push switch or a socket, which is not limited in the present embodiment.

[0085] In one example, the contact switch includes not only a static contact component, but also a moving contact component. The moving contact of the moving contact component touches the static contact of the static contact component, so that the contact switch is in a closed state and the circuit is in a connected state. The moving contact of the moving contact component is separated from the static contact of the static contact component, so that the contact switch is in an open state and the circuit is in a disconnected state.

[0086] In the disclosed embodiment, the contact switch includes the above-mentioned static contact assembly. As described above, in the process of fixing the static contact member to the fixing member, it is only necessary to push the first connection part into the second connection part of the fixing member so that the first connection part can cover the second connection part, thereby realizing the buckling of the first connection part and the second connection part. Therefore, the assembly of the static contact assembly is relatively simple, which is conducive to improving the assembly efficiency of the static contact assembly, and further conducive to improving the assembly efficiency of the contact switch.

[0087] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A stationary contact assembly, characterized in that: The stationary contact assembly comprises a stationary contact member (1) and a fixing member (2); the stationary contact member (1) comprises an extension portion (131) and a first connecting portion (132); The first connecting portion (132) is connected to the extending portion (131) and is bent toward a first side of the extending portion (131), and an end of the first connecting portion (132) points toward the extending portion (131) or toward a main body of the first connecting portion (132); The contact surface of the stationary contact member (1) is on the second side of the extension portion (131), wherein the first side and the second side of the extension portion (131) are opposite to each other in the thickness direction; The fixing member (2) has a second connecting portion (21), the shape of the second connecting portion (21) matches the shape of the first connecting portion (132), and the first connecting portion (132) is buckled onto the second connecting portion (21).

2. The stationary contact assembly according to claim 1, characterized in that: The stationary contact member (1) comprises a stationary contact plate (11) and a spring sheet (13); The spring sheet (13) comprises the extension portion (131) and the first connection portion (132); the second side of the extension portion (131) is fixed on the stationary contact plate (11); and the contact surface of the stationary contact member (1) is on the side of the stationary contact plate (11) facing away from the extension portion (131).

3. The stationary contact assembly according to claim 1, characterized in that: The end of the first connecting portion (132) points toward the extending portion (131), and there is a distance between the end of the first connecting portion (132) and the extending portion (131).

4. The stationary contact assembly according to claim 1, characterized in that: The first connecting portion (132) includes a plurality of flat sheets (1321) connected in sequence, or the first connecting portion (132) is an arc sheet, or the first connecting portion (132) includes a flat sheet (1321) and an arc sheet (1322) connected to each other.

5. The stationary contact assembly according to claim 1, characterized in that: The second connecting portion (21) has a guide structure on one side along an assembly direction, the guide structure being used to guide the first connecting portion (132) to be snapped onto the second connecting portion (21), the assembly direction being the direction in which the stationary contact (1) is installed into the fixing portion (2).

6. The stationary contact assembly according to claim 1, characterized in that: The fixing member (2) has a supporting portion (22), the extending portion (131) abuts against the supporting portion (22), and the supporting portion (22) is used as a swing point for the swing of the extending portion (131).

7. The stationary contact assembly according to claim 6, characterized in that: The support portion (22) has an arcuate surface facing the extension portion (131), and the extension portion (131) abuts against the arcuate surface of the support portion (22), or, The support portion (22) has a sharp edge facing the extension portion (131), and the extension portion (131) abuts against the sharp edge of the support portion (22).

8. The stationary contact assembly according to claim 6, characterized in that: The support portion (22) has a guide structure on one side along an assembly direction, the guide structure being used to guide the extension portion (131) to abut against the support portion (22), the assembly direction being the direction in which the stationary contact (1) is installed into the fixing portion (2).

9. The stationary contact assembly according to claim 1, characterized in that: The inner wall of the first connecting portion (132) has a first positioning structure (1323), and the outer wall of the second connecting portion (21) has a second positioning structure (211); When the first positioning structure (1323) and the second positioning structure (211) cooperate with each other, the first connecting portion (132) is buckled onto the second connecting portion (21) and is buckled into place.

10. The stationary contact assembly according to any one of claims 1 to 9, characterized in that: The number of the stationary contacts (1) is plural.

11. A contact switch, characterized in that: The contact switch comprises the stationary contact assembly according to any one of claims 1 to 10.

Images