Contactor

Abstract

The utility model provides a contactor, and relates to the technical field of electrical equipment. The contactor comprises a shell, a contact support and a rolling assembly. The contact support is installed on the shell and can slide relative to the shell. And the rolling assembly is arranged between the contact support and the shell. The rolling assembly is in contact fit with the contact support and / or the shell, and the rolling assembly enables a gap to be formed between the contact support and the shell. When the contact support slides relative to the shell, the rolling assembly rolls on the contact support and / or the shell. Therefore, the friction force in the sliding process of the contact support relative to the shell can be reduced, and the possibility that powder falls off from the contact support and / or the shell is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electrical equipment, and in particular to a contactor. Background Art

[0002] A contactor is a switching device that connects or disconnects the main circuit. It is based on electromagnetic, pneumatic or hydraulic principles and controls the opening and closing of the contacts by controlling the opening and closing state of the coil current, thereby switching the main circuit on and off.

[0003] The contactor includes a housing, a moving contact, a stationary contact, and a contact support supporting the moving contact. The contact support is installed on the housing and can drive the moving contact to slide relative to the housing. When the contact support drives the moving contact to move in a direction close to the stationary contact, the moving contact can contact the stationary contact to achieve the closing of the contactor's contacts. When the contact support drives the moving contact to move in a direction away from the stationary contact, the moving contact can separate from the stationary contact to achieve the disconnection of the contactor's contacts.

[0004] However, when the contact support slides relative to the housing, powder may fall from the contact support or the housing. When the fallen powder moves to the surface of the moving contact or the stationary contact, it will affect the reliable contact between the moving contact and the stationary contact. Utility Model Content

[0005] The present application provides a contactor to reduce the situation where powder falls from a contact support or a housing, thereby improving the reliability of contact between a moving contact and a stationary contact.

[0006] The present application provides a contactor, comprising a housing, a contact support and a rolling assembly. The contact support is mounted on the housing and can slide relative to the housing. The rolling assembly is arranged between the contact support and the housing. The rolling assembly is in contact with the contact support and / or the housing, and the rolling assembly allows a gap to exist between the contact support and the housing. When the contact support slides relative to the housing, the rolling assembly rolls on the contact support and / or the housing.

[0007] In the embodiment of the present application, the rolling assembly can isolate the contact support from the housing, avoiding direct contact between the contact support and the housing, thereby preventing the problem of powder generated by the friction between the contact support and the housing. In addition, when the contact support slides relative to the housing, the friction type between the rolling assembly and the housing or the contact support is rolling friction, which can reduce the friction force during the sliding process and reduce the possibility of powder falling from the contact support and / or the housing due to excessive friction.

[0008] Optionally, the rolling assembly is connected to one of the contact support and the housing, and is in contact with the other of the contact support and the housing. When the contact support slides relative to the housing, the rolling assembly rolls on the other of the contact support and the housing.

[0009] Thus, the rolling assembly can be connected to one of the contact support and the housing, and contact and cooperate with the other of the contact support and the housing. When the contact support slides relative to the housing, the rolling assembly can roll to reduce the possibility of powder falling due to friction between the contact support and the housing.

[0010] Optionally, the contact support includes a mounting portion, and when the rolling assembly is connected to the contact support, the rolling assembly is connected to the mounting portion, and the side of the rolling assembly facing the shell is in contact and fit with the shell.

[0011] Through the above arrangement, the rolling assembly can be connected to the contact support through the mounting portion. Since the rolling assembly contacts and cooperates with the housing on the side facing the housing, the rolling assembly can roll when the contact support slides relative to the housing. Thus, the sliding friction between the contact support and the housing can be replaced by the rolling friction between the rolling assembly and the contact, reducing the possibility of powder falling due to friction.

[0012] Optionally, a mounting hole is provided on the mounting portion, and the rolling assembly includes a ball, which is embedded in the mounting hole and rotatable relative to the mounting portion. Part of the ball is exposed in the mounting hole and contacts and cooperates with the housing.

[0013] The rolling assembly includes a ball, which can reduce the friction between the contact support and the housing. The mounting portion is provided with a mounting hole, and the ball can be embedded in the mounting hole to complete the setting of the rolling assembly.

[0014] Since part of the ball is exposed in the mounting hole, the part of the ball exposed in the mounting hole can be in contact with the housing. When the contact support slides relative to the housing, the contact support can drive the ball to roll on the housing.

[0015] Optionally, the mounting portion has a first surface and a second surface opposite to each other, and the mounting hole penetrates the mounting portion from the first surface to the second surface. Some of the balls are exposed to the mounting hole through the first surface. And / or, some of the balls are exposed to the mounting hole through the second surface.

[0016] Through the above arrangement, the mounting hole can be a through hole, so that the ball can be arranged on the mounting portion in different ways so that the ball is in contact with the housing.

[0017] Optionally, the rolling assembly includes a ball and a mounting member and a stopper that are arranged opposite to each other, the mounting member is provided with a first through hole, the stopper is provided with a second through hole, the first through hole is connected to the second through hole, the ball is embedded in the first through hole and the second through hole, and is partially exposed in the first through hole and / or the second through hole. The mounting member and / or the stopper are connected to the contact support, and the part of the ball exposed in the first through hole and / or the second through hole is in contact with the housing.

[0018] In this way, the ball can be installed by the mounting member and the limiting member. The ball can be placed between the mounting member and the limiting member, and the ball is located between the first through hole and the second through hole. Thus, the ball can be exposed through the first through hole and / or the second through hole, so that the ball contacts and cooperates with the housing.

[0019] Since the ball is embedded in the first through hole and the second through hole, the ball can roll in the first through hole and the second through hole, so that when the contact support slides relative to the housing, the ball can roll on the housing, which reduces friction and prevents powder from falling.

[0020] Optionally, the contact support has a first surface and a second surface opposite to each other, and the contact support is provided with a mounting hole, which penetrates the contact support in a direction from the first surface to the second surface. The mounting member is located on a side of the first surface away from the second surface, the limiting member is located on a side of the second surface away from the first surface, and the limiting member is connected to the mounting member.

[0021] Through the above arrangement, the mounting hole is a through hole that penetrates the contact support. When the rolling assembly is arranged, the mounting member and the limiting member are arranged on both sides of the contact support. Thus, the limiting member and the mounting member can clamp the ball in the middle. On the one hand, it is convenient to realize the rolling connection between the ball and the contact support. On the other hand, the mounting member and the limiting member can also limit the ball, reducing the possibility of the ball falling off the contact support.

[0022] Optionally, the contact support is further provided with a connecting through hole, which is spaced apart from the mounting hole. The mounting member is provided with a first clamping structure, the limiting member is provided with a second clamping structure, and the first clamping structure passes through the connecting through hole toward one end of the limiting member and is clamped with the second clamping structure.

[0023] The contact support is also provided with a connecting through hole to provide a connecting space for the mounting member and the limiting member. When the mounting member and the limiting member are connected, the first clamping structure and the second clamping structure in the connecting through hole can be clamped to realize the connection between the mounting member and the limiting member.

[0024] Optionally, the housing and the ball are both made of thermoplastic material.

[0025] In this way, when the contact support slides relative to the housing, the rolling friction between the ball and the housing is the friction between the thermoplastic material parts, which can reduce the possibility of powder falling due to rolling friction.

[0026] Optionally, a matching portion is provided on the shell, and when the rolling assembly is connected to the shell, the rolling assembly is connected to the matching portion, and the side of the rolling assembly facing the contact support is in contact and matching with the contact support.

[0027] In this way, the rolling assembly can be connected to the housing through the mating portion. Since the side of the rolling assembly facing the contact support is in contact with the contact support, the rolling assembly can roll when the contact support slides relative to the housing. Thus, the sliding friction between the contact support and the housing can be replaced by the rolling friction between the rolling assembly and the contact, reducing the occurrence of powder falling caused by friction. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the structure of a contactor according to an embodiment of the present application.

[0029] Figure 2 A schematic diagram of the connection between a contact support and a rolling assembly according to an embodiment of the present application.

[0030] Figure 3 An exploded view of a contact support and rolling assembly according to an embodiment of the present application.

[0031] Figure 4 This is a schematic structural diagram of a contact support according to an embodiment of the present application at a certain viewing angle.

[0032] Figure 5 This is a schematic structural diagram of the contact support of an embodiment of the present application from another perspective.

[0033] Figure 6 This is a schematic structural diagram of a rolling component according to an embodiment of the present application.

[0034] Figure 7 An exploded view of a rolling component according to an embodiment of the present application.

[0035] Figure 8 A side view of a rolling assembly according to an embodiment of the present application.

[0036] Fig. 9 This is a schematic structural diagram of a mounting component according to an embodiment of the present application.

[0037] Explanation of the reference numerals: 100: contactor; 10: housing; 20: contact support; 30: rolling assembly; 21: mounting portion; 22: mounting hole; 31: ball; 23: first surface; 24: second surface; 32: mounting member; 321: first through hole; 33: limiting member; 331: second through hole; 25: connecting through hole; 322: first clamping structure; 332: second clamping structure; 26: supporting member; 27: connecting plate; 28: first avoidance groove; 323: first mounting platform; 333: second mounting platform; 34: clamping platform; 35: clamping column. DETAILED DESCRIPTION

[0038] In this application, "at least one" means one or more, and "plurality" means two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b, or c alone can represent: a, b, c, a and b, a and c, or a, b, and c, where a, b, and c can be single or multiple. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0039] The directions or positional relationships indicated by terms such as "center", "longitudinal", "lateral", "up", "down", "left", "right", "front", and "back" are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0040] The terms "connected" and "connected" should be understood in a broad sense. For example, the "connected" or "connected" of a circuit structure can refer to not only physical connection, but also electrical connection or signal connection. For example, it can be directly connected, that is, physically connected, or indirectly connected through at least one intermediate element, as long as the circuit is connected, or it can be the internal connection of two elements; signal connection can refer to signal connection through a circuit or through a media medium, such as radio waves. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] The contactor 100 provided in the embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0042] refer to Figure 1 and Figure 2 The contactor 100 includes a housing 10, a contact support 20, and a rolling assembly 30. The contact support 20 is mounted on the housing 10 and can slide relative to the housing 10. The rolling assembly 30 is arranged between the contact support 20 and the housing 10. The rolling assembly 30 contacts and cooperates with the contact support 20 and / or the housing 10, and the rolling assembly 30 allows a gap to exist between the contact support 20 and the housing 10. When the contact support 20 slides relative to the housing 10, the rolling assembly 30 rolls on the contact support 20 and / or the housing 10.

[0043] In the embodiment of the present application, a rolling assembly 30 is provided between the contact support 20 and the housing 10. The rolling assembly 30 is in contact with the contact support 20 and / or the housing 10, which is equivalent to the contact support 20 being in contact with the housing 10 through the rolling assembly 30. When the contact support 20 slides relative to the housing 10, the rolling assembly 30 can roll between the contact support 20 and the housing 10, replacing the sliding friction between the contact support 20 and the housing 10 with the rolling friction between the rolling assembly 30 and the housing 10, or the rolling friction between the rolling assembly 30 and the contact support 20.

[0044] Since the rolling assembly 30 creates a gap between the contact support 20 and the housing 10, when the contact support 20 slides relative to the housing 10, direct contact between the contact support 20 and the housing 10 can be avoided, thereby reducing the possibility of powder falling due to friction between the contact support 20 and the housing 10.

[0045] That is, in the present application, the provision of the rolling assembly 30 can reduce the friction between the contact support 20 and the housing 10. On the one hand, the rolling assembly 30 can isolate the contact support 20 from the housing 10 to avoid direct contact between the contact support 20 and the housing 10, thereby reducing the possibility of powder being generated by the friction between the contact support 20 and the housing 10. On the other hand, when the contact support 20 slides relative to the housing 10, the friction type between the rolling assembly 30 and the housing 10 or the contact support 20 is rolling friction, which can reduce the friction force during the sliding process and reduce the problem of powder falling from the contact support 20 and / or the housing 10 due to excessive friction.

[0046] In order to realize the on-off control of the main circuit by the contactor 100, the contactor 100 further includes a moving contact and a stationary contact. The stationary contact is fixedly mounted on the housing 10, and the moving contact is connected to the contact support 20. When the contact support 20 slides relative to the housing 10, the moving contact can slide along with the contact support 20 to approach the stationary contact and contact the stationary contact, or to move away from the stationary contact and separate from the stationary contact.

[0047] The provision of the rolling assembly 30 in the present application can reduce the possibility of powder falling from the contact support 20 and / or the housing 10. Furthermore, when the contactor 100 needs to conduct the main circuit, the possibility of powder falling from the moving contact and the stationary contact can be reduced, thereby improving the reliability of the contact between the moving contact and the stationary contact.

[0048] In the present application, the rolling assembly 30 may have different configurations, so that the rolling assembly 30 can separate the contact support 20 from the housing 10 and reduce the friction between the contact support 20 and the housing 10. The following two examples are specifically used for illustration:

[0049] Method 1: The side of the contact support 20 facing the housing 10 may be provided with an arc-shaped groove, and the side of the housing 10 facing the contact support 20 may be provided with a mounting track with an arc-shaped cross section. The groove is opposite to the mounting track, and at least one spherical rolling body is sandwiched between the groove and the mounting track. The radius of the arc-shaped groove and the arc-shaped mounting track is consistent with the radius of the rolling body, so that the rolling body can contact and cooperate with the inner wall of the groove and the inner wall of the mounting track.

[0050] The depth of the groove and / or the mounting track is smaller than the radius of the rolling body, so that part of the rolling body is located outside the groove and outside the mounting track at the same time, so that the rolling body can separate the contact support 20 from the housing 10 .

[0051] When the contact support 20 slides relative to the housing 10, the contact support 20 can drive the rolling body to slide relative to the housing 10, and the rolling body rolls relative to the groove and the mounting track. In other words, when the contact support 20 slides, the rolling body rolls forward.

[0052] With such arrangement, when the contact support 20 and the housing 10 move relative to each other, the rolling body rolls relative to the contact support 20 and the housing 10, and the friction generated in this process is also small. In addition, the contact support 20 and the housing 10 can be isolated by the rolling body to avoid direct contact between the contact support 20 and the housing 10 and sliding friction. This reduces the possibility of powder falling from the contact support 20 and / or the housing 10.

[0053] It should be noted that, in this embodiment, the extending direction of the mounting rail is consistent with the sliding direction of the contact support 20 .

[0054] Mode 2: The rolling assembly 30 can be connected to one of the contact support 20 and the housing 10, and can be in contact with the other of the contact support 20 and the housing 10. When the contact support 20 slides relative to the housing 10, the rolling assembly 30 rolls on the other of the contact support 20 and the housing 10.

[0055] Different from the first embodiment in which the rolling assembly 30 is connected to both the housing 10 and the contact support 20 , in the present embodiment, the rolling assembly 30 is connected to one of the contact support 20 and the housing 10 .

[0056] When the rolling assembly 30 is connected to the housing 10, the rolling assembly 30 can be in contact with the contact support 20. Therefore, when the contact support 20 slides relative to the housing 10, the contact support 20 also slides relative to the rolling assembly 30. The sliding of the contact support 20 applies force to the rolling assembly 30, causing the rolling assembly 30 to roll. Such an arrangement can also reduce the friction between the contact support 20 and the housing 10, reducing the possibility of powder falling.

[0057] For example, a mating portion may be provided on the housing 10 , and when the rolling assembly 30 is connected to the housing 10 , the rolling assembly 30 is connected to the mating portion, and the side of the rolling assembly 30 facing the contact support 20 contacts and mates with the contact support 20 .

[0058] In this way, the rolling assembly 30 can be connected to the housing 10 through the mating portion. Since the rolling assembly 30 contacts and mates with the contact support 20 on the side facing the contact support 20, when the contact support 20 slides relative to the housing 10, the rolling assembly 30 can roll on the contact support 20. Thus, the sliding friction between the contact support 20 and the housing 10 can be replaced by the rolling friction between the rolling assembly 30 and the contact support 20, reducing the possibility of powder falling caused by friction.

[0059] The matching portion may have a variety of structures. For example, a pit that matches the rolling assembly 30 may be provided on the housing 10, and the pit may serve as the matching portion. At this time, in the concave direction of the pit, the concave depth of the pit is smaller than the size of the rolling assembly 30, so that when the rolling assembly 30 contacts the contact support 20, a gap may be provided between the contact support 20 and the housing 10. The rolling assembly 30 may be a spherical ball.

[0060] Alternatively, a surface of the housing 10 facing the contact support 20 can also serve as the mating portion. In this case, the rolling assembly 30 includes a base and a ball, and the base is connected to the mating portion. The ball is rotatably connected to a side of the base away from the mating portion. When the contact support 20 slides relative to the housing 10, the ball can roll on the base.

[0061] When the rolling assembly 30 is connected to the contact support 20, the rolling assembly 30 can be in contact with the housing 10. Therefore, when the contact support 20 slides relative to the housing 10, the contact support 20 can drive the rolling assembly 30 to roll relative to the housing 10. Such a configuration can also reduce the friction between the contact support 20 and the housing 10, thereby reducing the occurrence of powder falling.

[0062] For details, please refer to the following description.

[0063] like Figure 3 As shown, the contact support 20 may include a mounting portion 21 . When the rolling assembly 30 is connected to the contact support 20 , the rolling assembly 30 is connected to the mounting portion 21 , and the rolling assembly 30 contacts and cooperates with the housing 10 at one side facing the housing 10 .

[0064] Through the above arrangement, the rolling assembly 30 can be connected to the contact support 20 through the mounting portion 21. Since the rolling assembly 30 contacts and cooperates with the housing 10 on the side facing the housing 10, when the contact support 20 slides relative to the housing 10, the rolling assembly 30 can roll on the housing 10. Thus, the sliding friction between the contact support 20 and the housing 10 can be replaced by the rolling friction between the rolling assembly 30 and the contact support 20, thereby reducing the possibility of powder falling caused by friction.

[0065] like Figure 3 and Figure 4 As shown, the mounting portion 21 may be provided with a mounting hole 22, and the rolling assembly 30 includes a ball 31, which is embedded in the mounting hole 22 and rotatable relative to the mounting portion 21. Part of the ball 31 is exposed in the mounting hole 22 and contacts and cooperates with the housing 10.

[0066] In this way, the friction between the contact support 20 and the housing 10 can be reduced by the ball bearings 31. Specifically, the mounting portion 21 is provided with a mounting hole 22, and the ball bearings 31 can be embedded in the mounting hole 22 to complete the setting of the rolling assembly 30.

[0067] Since part of the ball bearings 31 are exposed outside the mounting hole 22 , the part of the ball bearings 31 exposed outside the mounting hole 22 can be in contact with and fit with the housing 10 .

[0068] When the contact support 20 slides relative to the housing 10, the contact support 20 can drive the ball 31 to slide. Since the ball 31 can rotate relative to the mounting portion 21, when the contact support 20 drives the ball 31 to slide, the ball 31 can roll in the mounting portion 21. Therefore, the sliding between the contact support 20 and the housing 10 can be replaced by the rolling between the housing 10 and the ball 31, reducing the powder falling of the contact support 20 and / or the housing 10 caused by friction.

[0069] The mounting portion 21 may have a variety of structures. For example, a pit adapted to the ball 31 may be provided on the contact support 20, and the pit may serve as the mounting portion 21. At this time, in the recessed direction of the pit, the recessed depth of the pit is smaller than the size of the ball 31, so that when the rolling assembly 30 contacts the contact support 20, a gap may be provided between the contact support 20 and the housing 10.

[0070] Or, if Figure 4 and Figure 5As shown, the contact support 20 may include a plurality of support members 26 and a plurality of moving contacts arranged at intervals. The plurality of moving contacts may be connected to the plurality of support members 26, respectively. A connecting plate 27 is provided between two adjacent support members 26 among the plurality of support members 26, and the connecting plate 27 may serve as the mounting portion 21. The ball bearing 31 may be mounted on the connecting plate 27, which may fully utilize the connecting plate 27 and avoid affecting the mounting of the moving contacts.

[0071] Of course, the arrangement of the rolling assembly 30 is not limited to being arranged on the connecting plate 27, and can also be arranged at any other position that is in contact with the housing 10. For example, in the distribution direction of the plurality of support members 26, the two opposite sides of the contact support 20 are also in contact with the housing 10. Then the mounting portion 21 can be the two opposite sides of the contact support 20 in the distribution direction of the plurality of support members 26, etc. The specific arrangement position of the rolling assembly 30 is not specifically limited in the embodiment of the present application.

[0072] Furthermore, the specific number of rolling assemblies 30 may also be multiple. For example, if the contact support 20 contacts the housing 10 at different positions, multiple rolling assemblies 30 may be provided on the contact support 20 to reduce friction at multiple positions. Of course, in order to improve the rolling stability of the rolling assemblies 30, multiple rolling assemblies 30 may also be provided on one surface of the contact support 20 to cooperate with the housing 10. The number of rolling assemblies 30 is not specifically limited in the embodiments of the present application. For example, the number of rolling assemblies 30 may be 1, 2, 3, 5, or 6, etc.

[0073] Next, the following description will be given using the connection plate 27 as the mounting portion 21 .

[0074] In some embodiments, Figures 2 to 5 As shown, the mounting portion 21 may have a first surface 23 and a second surface 24 opposite to each other, and the mounting hole 22 penetrates the mounting portion 21 from the first surface 23 to the second surface 24. Part of the balls 31 are exposed to the mounting hole 22 through the first surface 23. And / or, part of the balls 31 are exposed to the mounting hole 22 through the second surface 24.

[0075] Through the above arrangement, the mounting hole 22 can be a through hole. Therefore, when the ball 31 is arranged, different arrangement methods can be used. The following three methods are specifically described as examples:

[0076] Method (1): Part of the ball 31 is exposed outside the mounting hole 22 through the first surface 23 .

[0077] In this way, the exposed balls 31 can contact and cooperate with the part of the housing 10 opposite to the first surface 23. When the contact support 20 slides relative to the housing 10, the part of the balls 31 located on the side of the first surface 23 away from the second surface 24 can roll on the housing 10 to reduce the friction of the contact support 20 during the sliding process.

[0078] Method (2): Part of the ball 31 is exposed outside the mounting hole 22 through the second surface 24 .

[0079] In this way, the exposed balls 31 can contact and cooperate with the part of the housing 10 opposite to the second surface 24. When the contact support 20 slides relative to the housing 10, the part of the balls 31 located on the side of the second surface 24 away from the first surface 23 can roll on the housing 10 to reduce the friction of the contact support 20 during the sliding process.

[0080] Method (3): Part of the balls 31 are exposed to the mounting hole 22 through the first surface 23 , and another part of the balls 31 are exposed to the mounting hole 22 through the second surface 24 .

[0081] The description of part of the ball 31 being exposed from the mounting hole 22 through the first surface 23 can be referred to the relevant description in method (1), and the description of part of the ball 31 being exposed from the mounting hole 22 through the second surface 24 can be referred to the relevant description in method (2), which will not be repeated here.

[0082] It should be noted that in mode (3), the ball 31 is exposed through the first surface 23 and the second surface 24, so that the ball 31 can not only contact and cooperate with the inner wall of the housing near the first surface to reduce the friction between the housing 10 and the contact support 20 near the first surface 23, but also contact and cooperate with the inner wall of the housing near the second surface 24 to reduce the friction between the housing 10 and the contact support 20 near the second surface. That is, the friction between different sides of the contact support 20 and the housing 10 can be reduced.

[0083] In some embodiments, Figure 6 and Figure 7 As shown, the rolling assembly 30 may include a ball 31 and a mounting member 32 and a stopper 33 that are arranged opposite to each other. The mounting member 32 is provided with a first through hole 321, and the stopper 33 is provided with a second through hole 331. The first through hole 321 is communicated with the second through hole 331. The ball 31 is embedded in the first through hole 321 and the second through hole 331, and is partially exposed in the first through hole 321 and / or the second through hole 331. The mounting member 32 and / or the stopper 33 are connected to the contact support 20, and the part of the ball 31 exposed in the first through hole 321 and / or the second through hole 331 is in contact with the housing 10.

[0084] The rolling assembly 30 includes a ball 31 , a mounting member 32 and a stopper 33 . The ball 31 can be mounted by the mounting member 32 and the stopper 33 .

[0085] Specifically, the mounting member 32 is provided with a first through hole 321, and the limiting member 33 is provided with a second through hole 331. The mounting member 32 and the limiting member 33 are arranged relative to each other, so that the first through hole 321 and the second through hole 331 are opposite to each other and connected. The ball 31 can be placed between the mounting member 32 and the limiting member 33, and the ball 31 is located between the first through hole 321 and the second through hole 331. Thus, the ball 31 can be exposed through the first through hole 321 and / or the second through hole 331, so that the ball 31 contacts and cooperates with the housing 10, as shown in FIG. Figure 8 shown.

[0086] Since the ball 31 is embedded in the first through hole 321 and the second through hole 331, the ball 31 can roll in the first through hole 321 and the second through hole 331. Therefore, when the contact support 20 slides relative to the housing 10, the ball 31 can roll on the housing 10, which plays a role in reducing friction and reducing powder falling.

[0087] When installing the rolling assembly 30 , the mounting member 32 and / or the limiting member 33 may be connected to the contact support 20 , so that the contact support 20 drives the ball 31 to roll.

[0088] It should be noted that the mounting member 32 and / or the stopper 33 are connected to the contact support 20, which will occupy the space between the contact support 20 and the housing 10. In order to reduce the space occupied by the rolling assembly 30 and avoid affecting the installation of other components in the housing 10, the mounting portion 21 can be made farther away from the housing 10 than other parts of the contact support 20.

[0089] That is, a first avoidance groove 28 may be provided on one side of the mounting portion 21, such as Figure 3 And / or a second avoidance groove is provided on the other side of the mounting portion 21 so that the mounting portion 21 is sunken into other parts of the contact support 20 , the bottom of the first avoidance groove 28 can be used as the first surface 23 , and the bottom of the second avoidance groove can be used as the second surface 24 .

[0090] In some embodiments, Figure 4 , Figure 5 and Figure 7 As shown, the contact support 20 may have a first surface 23 and a second surface 24 opposite to each other, and the contact support 20 is provided with a mounting hole 22, and the mounting hole 22 penetrates the contact support 20 along the direction from the first surface 23 to the second surface 24. The mounting member 32 is located on a side of the first surface 23 away from the second surface 24, and the limiting member 33 is located on a side of the second surface 24 away from the first surface 23, and the limiting member 33 is connected to the mounting member 32.

[0091] In the case where the contact support further includes the mounting portion 21 , the first surface 23 and the second surface 24 on the contact support 20 that are opposite to each other are the first surface 23 and the second surface 24 on the mounting portion 21 that are opposite to each other.

[0092] Through the above arrangement, the mounting hole 22 is a through hole penetrating the contact support 20. When the rolling assembly 30 is arranged, the mounting member 32 and the stop member 33 are arranged on both sides of the contact support 20.

[0093] Specifically, the mounting member 32 may be located on a side of the first surface 23 away from the second surface 24, and the limiting member 33 may be located on a side of the second surface 24 away from the first surface 23. Thus, the limiting member 33 and the mounting member 32 may clamp the ball 31 in the middle, which, on the one hand, facilitates the rolling connection between the ball 31 and the contact support 20. On the other hand, the mounting member 32 and the limiting member 33 may also limit the ball 31, reducing the possibility of the ball 31 falling off the contact support 20.

[0094] Of course, the mounting member 32 and the limiting member 33 may also be connected to the contact support 20 in other ways. For example, after the mounting member 32 is connected to the limiting member 33, the limiting member 33 may be connected to the first surface 23. Or after the mounting member 32 is connected to the limiting member 33, the mounting member 32 may be connected to the second surface 24. The specific connection method of the mounting member 32 and the limiting member 33 on the contact support 20 is not specifically limited in the embodiment of the present application.

[0095] It should be noted that if Figure 7 As shown, a first mounting platform 323 may be provided on the mounting member 32. In this case, the first through hole 321 may be provided on the first mounting platform 323, and the first mounting platform 323 is embedded in the mounting hole 22. The mounting member 32 can have a better bearing effect on the ball 31. When the contact support 20 slides relative to the housing 10, the ball 31 can roll in the first mounting platform 323, thereby avoiding the problem that the peripheral wall of the first through hole 321 is easily damaged by force due to the thin mounting member 32.

[0096] Similar, such as Figure 7 As shown, the limiting member 33 may also be provided with a second mounting platform 333. At this time, the second through hole 331 may be provided on the second mounting platform 333, and the second mounting platform 333 is embedded in the mounting hole 22. The limiting member 33 may have a better bearing effect on the ball 31.

[0097] In some embodiments, Figure 5 , Figure 6 and Figure 7As shown, the contact support 20 may also be provided with a connecting through hole 25, and the connecting through hole 25 is spaced apart from the mounting hole 22. The mounting member 32 is provided with a first clamping structure 322, and the limiting member 33 is provided with a second clamping structure 332. The first clamping structure 322 passes through the connecting through hole 25 toward one end of the limiting member 33 and is clamped with the second clamping structure 332.

[0098] The contact support 20 is also provided with a connecting through hole 25, which can also penetrate the contact support 20 from the first surface 23 to the second surface 24. The connecting through hole 25 can be spaced apart from the mounting hole 22 to provide a connecting space for the mounting member 32 and the stopper 33.

[0099] The mounting member 32 may be provided with a first clamping structure 322 , the limiting member 33 may be provided with a second clamping structure 332 , and the first clamping structure 322 may be clamped with the second clamping structure 332 to connect the mounting member 32 with the limiting member 33 .

[0100] Specifically, when the mounting member 32 is provided, the first clamping structure 322 can be made to pass through the connecting through hole 25 toward one end of the limiting member 33. When the limiting member 33 is provided, the second clamping structure 332 can be arranged in alignment with the connecting through hole 25, so that the second clamping structure 332 can also be embedded in the connecting through hole 25. Thus, the first clamping structure 322 and the second clamping structure 332 located in the connecting through hole 25 can be clamped, so as to realize the connection between the mounting member 32 and the limiting member 33.

[0101] It should be noted that the first clamping structure 322 and the second clamping structure 332 can have a variety of structures. For example, one or more clamping platforms 34 can be provided on the mounting member 32, and an opening can be provided on the clamping platform 34, and the clamping platform 34 provided with the opening can serve as the first clamping structure 322. One or more clamping columns 35 can be provided on the limiting member 33, and the clamping column 35 can serve as the second clamping structure 332. When connecting the mounting member 32 and the limiting member 33, the clamping platform 34 can pass through the connecting through hole 25, and the clamping column 35 can be clamped in the opening on the clamping platform 34.

[0102] Or, if Figure 7 and Fig. 9 As shown, a clamping platform 34 and a clamping column 35 can be provided on the mounting member 32 and the limiting member 33. The clamping platform 34 and the clamping column 35 on the mounting member 32 can form a first clamping structure 322, and the clamping platform 34 and the clamping column 35 on the limiting member 33 can form a second clamping structure 332.

[0103] At this time, when the mounting member 32 and the limiting member 33 are set, the clamping platform 34 on the mounting member 32 and the clamping column 35 on the limiting member 33 are opposite and clamped, and the clamping column 35 on the mounting member 32 and the clamping platform 34 on the limiting member 33 are opposite and clamped. In order to make the mounting member 32 and the limiting member 33 have a better limiting effect on the ball 31, the clamping platform 34 and the clamping column 35 on the mounting member 32 can be located on both sides of the ball 31. The specific forms of the first clamping structure 322 and the second clamping structure 332 are not specifically limited in this application.

[0104] Of course, the mounting member 32 and the limiting member 33 may also be connected in other ways.

[0105] For example, the first mounting platform 323 is embedded in the mounting hole 22 and is flush with the second surface 24. Therefore, when the stopper 33 is set, the stopper 33 can contact the first mounting platform 323. At this time, a screw can be set on the stopper 33 so that the screw passes through the stopper 33 and the position on the first mounting platform 323 where the first through hole 321 is not set. The specific connection method between the mounting member 32 and the stopper 33 is not specifically limited in the embodiment of the present application.

[0106] In some embodiments, the housing 10 and the ball 31 may both be made of thermoplastic material.

[0107] The contact support 20 is used to support the moving contact and needs to have good rigidity and electromechanical properties, high heat resistance and good resistance to chemical solvents. In the related art, the contact support 20 is generally made of thermosetting materials, while the housing 10 needs to be easy to form and is generally made of thermoplastic materials. When the contact support 20 slides relative to the housing 10, the friction is the sliding friction between the thermosetting material and the thermoplastic material. Since thermosetting materials are not wear-resistant, the contact support 20 is prone to powder falling due to friction during operation.

[0108] In the present application, the housing 10 and the ball bearings 31 are both made of thermoplastic materials. Therefore, when the contact support 20 slides relative to the housing 10, the rolling friction between the ball bearings 31 and the housing 10 is the friction between thermoplastic materials.

[0109] Since the wear resistance of thermoplastic material is better than that of thermosetting material, the possibility of powder falling on the ball 31 or the shell 10 during the rolling of the ball 31 on the shell 10 can be further reduced.

[0110] In addition, when the first mounting platform 323 is provided on the mounting member 32 and the second mounting platform 333 is provided on the limiting member 33, during the rolling process of the ball 31, the ball 31 will roll relative to the first mounting platform 323, the second mounting platform 333 and the housing 10. At this time, in order to reduce the possibility of powder falling on the first mounting platform 323 or the second mounting platform 333, the first mounting platform 323 and the second mounting platform 333 can also be thermoplastic material parts.

[0111] In order to facilitate the installation of the first mounting platform 323 of thermoplastic material on the mounting member 32 and the second mounting platform 333 of thermoplastic material on the stopper 33, the mounting member 32 and the stopper 33 can also be made of thermoplastic material. In this way, they can be formed once by injection molding or other methods, which is convenient for processing.

[0112] It should be noted that, in the embodiment of the present application, in order to ensure the normal use of the contact support 20, the contact support 20 can still be made of thermosetting material. When the contact support 20 slides relative to the housing 10, there is rolling friction between the ball 31 and the first mounting platform 323, the second mounting platform 333 and the housing 10. Since the first mounting platform 323, the second mounting platform 333, the housing 10 and the ball 31 are all made of thermoplastic materials, the friction generated by the rolling of the ball 31 relative to the first mounting platform 323, the second mounting platform 333 and the housing 10 is the friction between thermoplastic material parts and thermoplastic material parts, which can further reduce the occurrence of powder falling due to rolling friction.

[0113] In the embodiment of the present application, the provision of the rolling assembly 30 can reduce the friction between the contact support 20 and the housing 10. On the one hand, the rolling assembly 30 can isolate the contact support 20 from the housing 10 to avoid direct contact between the contact support 20 and the housing 10, thereby preventing the problem of powder generated by the friction between the contact support 20 and the housing 10. On the other hand, when the contact support 20 slides relative to the housing 10, the type of friction between the rolling assembly 30 and the housing 10 or the contact support 20 is rolling friction, which can reduce the friction force during the sliding process, thereby reducing the possibility of powder falling from the contact support 20 and / or the housing 10 due to excessive friction.

[0114] Finally, it should be noted that the above embodiments are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A contactor, characterized in that: include: case; A contact support, mounted on the housing and capable of sliding relative to the housing; A rolling assembly, disposed between the contact support and the housing; The rolling assembly is in contact with the contact support and / or the housing, and the rolling assembly allows a gap to exist between the contact support and the housing; When the contact support slides relative to the housing, the rolling assembly rolls on the contact support and / or the housing.

2. The contactor according to claim 1, characterized in that: The rolling assembly is connected to one of the contact support and the housing, and is in contact with the other of the contact support and the housing; When the contact support slides relative to the housing, the rolling assembly rolls on the other of the contact support and the housing.

3. The contactor according to claim 1 or 2, characterized in that: The contact support includes a mounting portion. When the rolling assembly is connected to the contact support, the rolling assembly is connected to the mounting portion, and the rolling assembly contacts and cooperates with the housing at a side facing the housing.

4. The contactor according to claim 3, characterized in that: The mounting portion is provided with a mounting hole, and the rolling assembly includes a ball, and the ball is embedded in the mounting hole and can rotate relative to the mounting portion; Part of the balls are exposed from the mounting hole and are in contact with the housing.

5. The contactor according to claim 4, characterized in that: The mounting portion has a first surface and a second surface that are opposite to each other, and the mounting hole penetrates the mounting portion along a direction from the first surface to the second surface; Part of the balls are exposed to the mounting hole through the first surface; And / or, part of the balls are exposed to the mounting hole through the second surface.

6. The contactor according to claim 2, characterized in that: The rolling assembly includes a ball and a mounting member and a limiting member arranged opposite to each other, the mounting member is provided with a first through hole, the limiting member is provided with a second through hole, the first through hole is communicated with the second through hole, the ball is embedded in the first through hole and the second through hole, and is partially exposed from the first through hole and / or the second through hole; The mounting member and / or the limiting member are connected to the contact support, and the portion of the ball exposed from the first through hole and / or the second through hole is in contact with and fits with the housing.

7. The contactor according to claim 6, characterized in that: The contact support has a first surface and a second surface opposite to each other, and the contact support is provided with a mounting hole, and the mounting hole penetrates the contact support along the direction from the first surface to the second surface; The mounting member is located on a side of the first surface away from the second surface, the limiting member is located on a side of the second surface away from the first surface, and the limiting member is connected to the mounting member.

8. The contactor according to claim 7, characterized in that: The contact support is also provided with a connecting through hole, and the connecting through hole is spaced apart from the mounting hole; The mounting member is provided with a first clamping structure, the limiting member is provided with a second clamping structure, and the first clamping structure passes through the connecting through hole toward one end of the limiting member and is clamped with the second clamping structure.

9. The contactor according to any one of claims 4, 6 to 8, characterized in that: The shell and the ball are both made of thermoplastic material.

10. The contactor according to claim 1 or 2, characterized in that: The housing is provided with a matching portion. When the rolling assembly is connected to the housing, the rolling assembly is connected to the matching portion, and the side of the rolling assembly facing the contact support is in contact with and matched with the contact support.

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