CN217280609U - Linkage structure on contactor and contactor - Google Patents

Abstract

The utility model discloses a linkage structure and contactor on contactor, the linkage structure on this contactor includes support piece, static contact and linkage, the supporting part that is equipped with a plurality of intervals on the support piece sets up, all be equipped with a moving contact on every supporting part, the static contact is a plurality of, a plurality of static contacts and a plurality of moving contact one-to-ones set up, the one end of linkage is equipped with dodges the groove, the linkage is equipped with the one end of dodging the groove and ends on a supporting part, and the moving contact is located and dodges the inslot. The linkage structure on the contactor can press the linkage piece to close the main loop under the condition that the main loop is powered off, so that the main loop is ensured to keep working continuously.

Description

Linkage structure on contactor and contactor

Technical Field

The utility model relates to an electrical equipment technical field especially relates to a linkage structure and contactor on contactor.

Background

With the development of the fire-fighting industry, the requirement that the contactor product can be forced to close the main loop to enable the main loop to continue to work under the condition that the main loop is powered off needs to be met. In the existing large-current contactor structure, the main contact can not finish the total stroke by pressing the linkage piece, so that the main loop of the contactor can not be completely closed.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a linkage structure on contactor, linkage structure on this contactor can press the linkage and realize that the major loop is closed under the circumstances of major loop outage, ensures that the major loop keeps continuing work.

A second object of the utility model is to provide a contactor, this contactor can realize that the major loop is closed through pressing the linkage under the circumstances of major loop outage, ensures the steady operation of major loop.

For realizing the above technical effect, the technical scheme of the utility model as follows:

the utility model discloses a linkage structure on contactor, include: the supporting part is provided with a plurality of supporting parts arranged at intervals, and each supporting part is provided with a moving contact; the static contacts are multiple, and the static contacts and the moving contacts are arranged in a one-to-one correspondence manner; the contact device comprises a linkage piece, wherein one end of the linkage piece is provided with an avoidance groove, one end of the linkage piece, which is provided with the avoidance groove, is stopped on one supporting part, and the moving contact is positioned in the avoidance groove.

In some embodiments, the supporting portion is provided with a mounting groove; the moving contact includes: the contact spring piece is arranged at one end of the contact spring piece in an open mode, is matched in the mounting groove and is also provided with a mounting groove; the middle part of the contact body is matched in the assembling groove, and moving contacts are arranged at two ends of the contact body.

In some specific embodiments, a fitting hole is formed in a side wall of the mounting groove, an upper end of the fitting hole is arranged in a closed manner, the movable contact further includes a contact elastic member, the contact elastic member is arranged in the mounting groove, one end of the contact elastic member abuts against a bottom wall of the mounting groove, and the other end of the contact elastic member can abut against a closed end of the fitting hole.

The utility model also discloses a contactor, including the preceding the contactor on linkage structure and casing, inject the installation cavity in the casing, the top of installation cavity is equipped with presses the hole, linkage structure on the contactor is established in the installation cavity, establish linkage slidable ground press downthehole.

In some embodiments, a limiting groove is formed in the top wall of the mounting cavity, and a limiting protrusion capable of stopping in the limiting groove is formed in the outer peripheral wall of the linkage part.

In some embodiments, the linkage member is provided with a mounting groove, a resilient piece extending into the mounting groove is arranged in the housing, a resilient elastic member is arranged between the resilient piece and the bottom wall of the mounting groove, and two ends of the resilient elastic member are fixed on the resilient piece and the bottom wall of the mounting groove.

In some embodiments, the contactor further comprises: the two bases are arranged at intervals and respectively abut against the lower end face of the supporting piece; the first absorbing block is internally provided with a linkage rod in a penetrating manner, and two ends of the linkage rod are respectively clamped with the two bases; the second suction block is arranged on the bottom wall of the installation cavity, and the second suction block can drive the first suction block to move downwards when being electrified.

In some specific embodiments, the sidewall of the supporting member is provided with an insertion groove, and the base is provided with an insertion portion engaged with the insertion groove.

In some specific embodiments, a buffer is disposed between the supporting member and the first absorbing block, and the buffer includes: one end of the buffer cushion is inserted into the buffer groove at the lower end of the support piece; the buffer springs are arranged around the buffer cushion, and two ends of each buffer spring are respectively connected to the supporting piece and the base.

In some more specific embodiments, a suction elastic member is arranged between the base and the bottom wall of the installation cavity.

The utility model discloses a linkage structure's on contactor beneficial effect: because the one end of linkage piece is stopped to be supported on the supporting part, will promote the synchronous downstream of support piece when the linkage piece downstream, when the moving contact of cooperation on the supporting part of support piece and static contact butt, just can realize that the major loop switches on. Namely the utility model discloses a linkage structure on contactor is under the condition of outage, and the user still can make its and static contact through pressing a plurality of moving contacts downstream of linkage drive to realize that the major loop switches on.

The utility model discloses a beneficial effect of contactor: due to the linkage structure, in the actual working process, the linkage part is pressed to move downwards, the linkage part pushes the support part to synchronously move downwards when moving downwards, and when the moving contact matched with the support part of the support part is abutted against the static contact, the main circuit can be switched on. Namely the utility model discloses a contactor is under the condition of outage, and the user still can make its and static contact through pressing a plurality of moving contacts downstream of linkage drive to realize that the major loop switches on.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural view of a linkage structure on a contactor according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a contactor according to an embodiment of the present invention;

fig. 3 is a schematic sectional view of a contactor according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of a contactor according to an embodiment of the present invention;

reference numerals:

1. a support member; 11. a support portion; 111. a contact slot; 112. a mating hole; 12. inserting grooves;

2. a moving contact; 21. a contact spring; 211. assembling a groove; 22. a contact body; 23. a contact elastic member;

3. static contact;

4. a linkage member; 41. an avoidance groove; 42. mounting grooves; 43. a limiting bulge;

10. a housing; 101. a mounting cavity; 102. pressing the hole; 103. a limiting groove;

20. a base; 201. a plug-in part; 30. a first absorption block; 40. a linkage rod; 50. a second suction block; 60. a resilient elastic member; 70. a buffer member; 701. a cushion pad; 702. a buffer spring; 80. attracting the elastic member.

Detailed Description

In order to make the technical problems, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further explained below by means of specific embodiments in conjunction with the accompanying drawings.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, features defined as "first" and "second" may explicitly or implicitly include one or more of the features for distinguishing between descriptive features, non-sequential, non-trivial and non-trivial. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The specific structure of the linkage structure on the contactor according to the embodiment of the present invention will be described below with reference to fig. 1 to 4.

The utility model discloses a linkage structure on contactor, as shown in fig. 1, the linkage structure on the contactor of this embodiment includes support piece 1, static contact 3 and linkage 4, the last supporting part 11 that is equipped with a plurality of intervals and sets up of support piece 1, all be equipped with a moving contact 2 on every supporting part 11, static contact 3 is a plurality of, a plurality of static contacts 3 and the setting of a plurality of moving contact 2 one-to-one, the one end of linkage 4 is equipped with dodges groove 41, linkage 4 is equipped with the one end of dodging groove 41 and ends to support on a supporting part 11, and moving contact 2 is located dodges the inslot 41.

It can be understood that, when the linkage member 4 moves downwards, because one end of the linkage member 4 is abutted against the supporting portion 11, the linkage member 4 will push the supporting portion 1 to move downwards synchronously when moving downwards, and when the movable contact 2 fitted on the supporting portion 11 of the supporting portion 1 is abutted against the fixed contact 3, the main circuit can be conducted. Therefore, even under the condition of power failure, a user can still press the linkage 4 to drive the movable contacts 2 to move downwards to be in contact with the fixed contacts 3, and the conduction of the main loop is realized. In addition, because the one end that link 4 acts on the supporting part 11 has the groove 41 of dodging the moving contact 2, that is to say that link 4 drives a plurality of moving contacts 2 through the whole support piece 1 of drive and descends simultaneously when moving downwards, has ensured the action uniformity of a plurality of moving contacts 2, has avoided the inconsistent conduction fault that leads to of moving contact 2 action to take place, has promoted the reliability of the linkage structure on the contactor of this embodiment.

In some embodiments, as shown in fig. 3, the support portion 11 is provided with a contact slot 111; the movable contact 2 comprises a contact spring piece 21 and a contact body 22, one end of the contact spring piece 21 is opened, the contact spring piece 21 is matched in the contact groove 111, the contact spring piece 21 is also provided with an assembling groove 211, the middle part of the contact body 22 is matched in the assembling groove 211, and the two ends of the contact body 22 are provided with movable contacts. It is understood that since the length of the entire contact body 22 is relatively long, if the contact body 22 is directly placed on the support portion 11, a phenomenon in which the contact body 22 is unstable easily occurs. In this embodiment, the movable contact 2 includes a contact spring 21, the contact spring 21 is clamped in the mounting seat of the supporting portion 11, and then the middle portion of the contact body 22 is inserted into the assembling groove 211, so that the contact body 22 is clamped by the contact spring 21 and the top wall dual support of the supporting portion 11, the mounting stability of the contact body 22 is improved, and the reliability of the linkage structure on the contactor of this embodiment is improved.

Optionally, the size of the middle part of the contact spring piece 21 is smaller than the size of the two ends. Therefore, in the installation process, the middle part of the contact elastic piece 21 is inserted into the contact groove 111 from the open end of the contact elastic piece 21, so that the installation of the contact elastic piece 21 is facilitated, and the phenomenon that the contact body 22 falls out of the contact elastic piece 21 can be avoided.

In some specific embodiments, as shown in fig. 3, the side wall of the contact groove 111 is provided with a fitting hole 112, an upper end of the fitting hole 112 is disposed in a closed manner, the movable contact 2 further includes a contact elastic member 23, the contact elastic member 23 is disposed in the fitting groove 211, one end of the contact elastic member 23 abuts against a bottom wall of the fitting groove 211, and the other end can abut against a closed end of the fitting hole 112. It can be understood that, in the actual working process, when the moving contact 2 and the fixed contact 3 are abutted, the contact elastic member 23 is compressed, so that when the linkage member 4 returns to the original position, the contact body 22 can be reset under the elastic force of the contact elastic member 23 in addition to moving upward under the driving of the linkage member 4, and under the dual reset power, the stable reset of the contact body 22 of the moving contact 2 can be ensured, and the reliability of the linkage structure on the contactor of the embodiment is improved.

The specific structure of the contactor according to the embodiment of the present invention will be described with reference to fig. 1 to 4.

The utility model also discloses a contactor, as shown in fig. 2, this contactor includes linkage structure and casing 10 on the contactor of the preceding, inject installation cavity 101 in the casing 10, and the top of installation cavity 101 is equipped with presses down hole 102, and linkage structure on the contactor is established in installation cavity 101, and linkage 4 slidable is established in pressing down hole 102.

It can be understood that, in the actual working process, if the power failure occurs, the linkage member 4 is pressed to move downwards, the linkage member 4 pushes the support member 1 to move downwards synchronously when moving downwards, and when the movable contact 2 matched with the support portion 11 of the support member 1 is abutted to the fixed contact 3, the main circuit can be conducted. Therefore, even under the condition of power failure, a user can still press the linkage 4 to drive the movable contacts 2 to move downwards to be in contact with the fixed contacts 3, and the conduction of the main loop is realized. Meanwhile, the linkage piece 4 is slidably arranged in the pressing hole 102, and the pressing hole 102 plays a role in guiding and limiting, so that a user can smoothly press the linkage piece 4, and the linkage piece 4 is prevented from being inclined.

In some embodiments, as shown in fig. 3, a limiting groove 103 is formed on the top wall of the mounting cavity 101, and a limiting protrusion 43 capable of abutting against the limiting groove 103 is formed on the outer peripheral wall of the linkage member 4. It will be appreciated that when it is desired to disconnect the primary circuit, it is necessary to reset the linkage 4 (the resetting action may be manual or may be by the provision of an elastic member which is caused to reset under the action of the elastic force of the elastic member). During the resetting process, when the limiting protrusion 43 stops against the limiting groove 103, the linkage member 4 cannot move upwards, so that the phenomenon that the linkage member 4 is separated from the shell 10 during the resetting process is avoided.

In some embodiments, as shown in fig. 3, the linkage member 4 is provided with a mounting groove 42, a resilient piece (not shown) extending into the mounting groove 42 is provided in the housing 10, a resilient elastic member 60 is provided between the resilient piece and the bottom wall of the mounting groove 42, and two ends of the resilient elastic member 60 are fixed to the resilient piece and the bottom wall of the mounting groove 42. It can be understood that, when the link member 4 is pressed down, since both ends of the resilient elastic member 60 are fixed to the bottom walls of the resilient plate and mounting groove 42, the resilient elastic member 60 is stretched, and when the external force applied to the link member 4 is removed, the link member 4 can be restored by the resilient elastic member 60. Therefore, the linkage 4 does not need to be reset manually in the using process, and the operation is very convenient.

Of course, it should be additionally noted that the resilient elastic member 60 of the present invention may also be disposed at other positions according to actual needs, for example, a mounting post is disposed on the outer side wall of the linkage member 4, the resilient elastic member 60 is sleeved on the mounting post, and the other end of the resilient elastic member 60 is connected to the top wall of the housing 10.

In some embodiments, as shown in fig. 3 to 4, the contactor further includes a base 20, a first absorbing block 30 and a second absorbing block 50, the base 20 is two that are arranged at an interval and respectively abuts against the lower end face of the support 1, a linkage rod 40 penetrates through the first absorbing block 30, two ends of the linkage rod 40 are respectively clamped with the two bases 20, the second absorbing block 50 is installed on the bottom wall of the installation cavity 101, and the second absorbing block 50 can drive the first absorbing block 30 to move downward when being powered on. It can be understood that, in actual operation, the second suction block 50 can drive the first suction block 30 to move downwards after being powered on, and when the first suction block 30 moves downwards, the linkage rod 40 can drive the base 20 to move downwards. Because the base 20 is stopped against the lower end face of the supporting member 1, when the base 20 moves downward, the supporting member 1 can fall down under the action of gravity, so that the moving contact 2 is abutted against the static contact 3, and the main circuit is conducted. It should be added that the linkage rod 40 is adopted to realize the connection structure of the first absorbing block 30 and the two bases 20, so that on one hand, the first absorbing block 30 and the bases 20 can be ensured to move synchronously, and the supporting piece 1 can descend smoothly, on the other hand, the bases 20 do not need to be directly matched with the first absorbing block 30, the complexity of the bases 20 is reduced, and the bases 20 do not need to be detachable into split structures positioned at two sides of the first absorbing block 30, the structure of the whole contactor is simplified, and the manufacturing cost is reduced.

In some embodiments, as shown in fig. 4, the sidewall of the supporting member 1 is provided with a slot 12, and the base 20 is provided with a plug 201 matching with the slot 12. It is understood that if the support member 1 is dropped by only gravity, the dropping stroke of the support member 1 may be excessively small and the phenomenon of skewing may easily occur. In this embodiment, the supporting member 1 and the base 20 are connected by the matching of the inserting portion 201 and the inserting groove 12, so that the base 20 can drive the supporting member 1 to fall during the falling process, and the falling of the supporting member 1 is ensured to form enough contact between the moving contact 2 and the static contact 3. It should be additionally noted that, in other embodiments of the present invention, the shapes of the insertion groove 12 and the insertion portion 201 may be selected according to actual needs, and the specific shape of the insertion groove 12 is not limited herein.

In some specific embodiments, as shown in fig. 3, a buffer member 70 is disposed between the supporting member 1 and the first absorbing block 30, the buffer member 70 includes a buffer pad 701 and a buffer spring 702, one end of the buffer pad 701 is inserted into a buffer slot at the lower end of the supporting member 1, the buffer spring 702 is disposed around the buffer pad 701, and two ends of each buffer spring 702 are respectively connected to the supporting member 1 and the base 20. It can be understood that the buffer pad 701 and the buffer spring 702 can both play a role of buffering, and when the first absorption block 30 and the second absorption block 50 are absorbed, if the descending speed of the support member 1 is too fast, the acting force between the movable contact 2 and the fixed contact 3 is large, the phenomenon that the movable contact 2 and the fixed contact 3 are damaged easily occurs. In this embodiment, the added buffer member 70 can play a role of buffering to reduce the descending speed of the supporting member 1 when the second attraction block 50 attracts the first attraction block 30, so as to ensure that the acting force between the moving contact 2 and the static contact 3 is small, thereby reducing the damage rate of the moving contact 2 and the static contact 3.

In some more specific embodiments, a snap-in elastic member 80 is disposed between the base 20 and the bottom wall of the installation cavity 101. It can be understood that the attraction elastic member 80 can be compressed when the second attraction block 50 and the first attraction block 30 are attracted, so that when the second attraction block 50 is de-energized and the attraction force between the first attraction block 30 and the second attraction block 50 disappears, the base 20 can rise under the action of the attraction elastic member 80, so that the first attraction block 30 and the support member 1 are reset, and the movable contact 2 and the fixed contact 3 are separated.

Example (b):

a contactor according to an embodiment of the present invention is described below with reference to fig. 1 to 4.

As shown in fig. 1 to 4, the contactor of the present embodiment includes a linkage structure, a housing 10, a base 20, a first suction block 30, a second suction block 50, a resilient elastic member 60, a buffer member 70, and a suction elastic member 80.

Inject installation cavity 101 in the casing 10, the top of installation cavity 101 is equipped with presses down hole 102 and encircles the spacing recess 103 that presses down hole 102 and set up, the linkage structure includes support piece 1, moving contact 2, static contact 3 and linkage 4, be equipped with the supporting part 11 that three interval set up on the support piece 1, all be equipped with contact groove 111 on every supporting part 11 and be equipped with mating holes 112 on the lateral wall in contact groove 111, the upper end of mating holes 112 seals the setting, be equipped with inserting groove 12 on two relative lateral walls that set up of support piece 1. One end of the linkage member 4 is provided with an avoiding groove 41, one end of the linkage member 4 provided with the avoiding groove 41 is stopped on one supporting part 11, and the moving contact 2 is positioned in the avoiding groove 41. Be equipped with spacing arch 43 on two relative lateral walls that set up of linkage 4, spacing arch 43 can cooperate in spacing recess 103, still is equipped with mounting groove 42 on the linkage 4, is equipped with the shell fragment (not shown) that returns that stretches into mounting groove 42 in the casing 10, and the both ends of resilience elastic component 60 are fixed on the diapire of returning shell fragment and mounting groove 42. The movable contact 2 comprises a contact spring piece 21, a contact body 22 and a contact elastic piece 23, one end of the contact spring piece 21 is opened and arranged and is provided with an assembly groove 211, the contact spring piece 21 is matched in the assembly groove 42, the middle part of the contact body 22 is matched in the assembly groove 211, and movable contacts are arranged at two ends of the contact body 22. The contact elastic member 23 is disposed in the fitting groove 211, and one end of the contact elastic member 23 abuts against the bottom wall of the fitting groove 211 and the other end thereof can abut against the closed end of the fitting hole 112. The number of the static contacts 3 is three, and the three static contacts 3 and the three moving contacts 2 are arranged in a one-to-one correspondence manner. The bases 20 are two and are arranged at intervals, the bases are respectively abutted to the lower end face of the support piece 1, the linkage rod 40 penetrates through the first absorbing block 30, two ends of the linkage rod 40 are respectively clamped with the two bases 20, the second absorbing block 50 is installed on the bottom wall of the installation cavity 101, and the second absorbing block 50 can drive the first absorbing block 30 to move downwards when being powered on. The base 20 is provided with an insertion part 201 which is matched with the insertion groove 12. The buffer member 70 includes a buffer pad 701 and buffer springs 702, one end of the buffer pad 701 is inserted into the buffer slot at the lower end of the support member 1, the buffer springs 702 are a plurality of ones arranged around the buffer pad 701, and two ends of each buffer spring 702 are respectively connected to the support member 1 and the base 20. The attracting elastic member 80 is provided between the base 20 and the bottom wall of the installation cavity 101.

Reference throughout this specification to "some embodiments," "other embodiments," or the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. A linkage structure on a contactor, comprising:

the device comprises a supporting piece (1), wherein a plurality of supporting parts (11) arranged at intervals are arranged on the supporting piece (1), and each supporting part (11) is provided with a moving contact (2);

the fixed contacts (3) are multiple, and the fixed contacts (3) and the moving contacts (2) are arranged in a one-to-one correspondence manner;

the contact device comprises a linkage piece (4), wherein an avoidance groove (41) is formed in one end of the linkage piece (4), one end, provided with the avoidance groove (41), of the linkage piece (4) is abutted to one supporting part (11), and the moving contact (2) is located in the avoidance groove (41).

2. The linkage structure on a contactor according to claim 1, wherein the support portion (11) is provided with a contact groove (111);

the moving contact (2) comprises:

the contact spring piece (21) is arranged at one end of the contact spring piece (21) in an open mode, the contact spring piece (21) is matched in the contact groove (111), and the contact spring piece (21) is further provided with an assembling groove (211);

the middle part of the contact body (22) is matched in the assembling groove (211), and moving contacts are arranged at two ends of the contact body (22).

3. The linkage structure on the contactor according to claim 2, wherein a fitting hole (112) is formed in a side wall of the contact groove (111), an upper end of the fitting hole (112) is arranged in a closed manner, the movable contactor (2) further comprises a contact elastic member (23), the contact elastic member (23) is arranged in the assembling groove (211), one end of the contact elastic member (23) abuts against a bottom wall of the assembling groove (211), and the other end of the contact elastic member can abut against a closed end of the fitting hole (112).

4. A contactor, characterized by comprising a linkage structure on the contactor according to any one of claims 1 to 3 and a housing (10), wherein a mounting cavity (101) is defined in the housing (10), a pressing hole (102) is formed at the top of the mounting cavity (101), the linkage structure on the contactor is arranged in the mounting cavity (101), and the linkage member (4) is slidably arranged in the pressing hole (102).

5. A contactor according to claim 4, characterized in that the top wall of the mounting cavity (101) is provided with a limiting groove (103), and the outer peripheral wall of the linkage member (4) is provided with a limiting projection (43) capable of stopping in the limiting groove (103).

6. The contactor according to claim 4, wherein the linkage member (4) is provided with a mounting groove (42), the housing (10) is provided with a resilient piece extending into the mounting groove (42), a resilient elastic member (60) is arranged between the resilient piece and the bottom wall of the mounting groove (42), and two ends of the resilient elastic member (60) are fixed on the resilient piece and the bottom wall of the mounting groove (42).

7. The contactor as claimed in claim 4, further comprising:

the two bases (20) are arranged at intervals and respectively abutted against the lower end face of the support (1);

the first absorbing block (30), a linkage rod (40) penetrates through the first absorbing block (30), and two ends of the linkage rod (40) are respectively clamped with the two bases (20);

the second suction and combination block (50) is installed on the bottom wall of the installation cavity (101), and the first suction and combination block (30) can be driven to move downwards when the second suction and combination block (50) is electrified.

8. A contactor according to claim 7, characterized in that the side wall of the supporting member (1) is provided with an insertion groove (12), and the base (20) is provided with an insertion part (201) which is matched with the insertion groove (12).

9. Contactor according to claim 7, characterized in that a buffer (70) is provided between said support (1) and said first suction block (30), said buffer (70) comprising:

the buffer pad (701), one end of the buffer pad (701) is inserted into the buffer groove at the lower end of the support (1);

the buffer springs (702) are arranged around the buffer cushion (701), and two ends of each buffer spring (702) are respectively connected to the support (1) and the base (20).

10. A contactor according to claim 9, characterized in that a snap-in elastic member (80) is provided between said base (20) and the bottom wall of said mounting cavity (101).

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