Connecting structure of reversible contactor

Abstract

The utility model discloses a connecting structure of a reversible contactor, which comprises a first contactor and a second contactor, and a linkage piece is arranged between the opposite surfaces of the first contactor and the second contactor. One end of the linkage piece is connected with a contact support in the first contactor, and the other end of the linkage piece is connected with a contact support in the second contactor; the first contactor and the second contactor are covered with a gland at the same time, so that the linkage piece is fixed in the first contactor and the second contactor. The two contactors are interlocked together through the linkage piece, and when one contactor is closed, the other contactor cannot be closed, so that the problems of interphase short circuit and safety accidents caused by simultaneous closing of the two contactors are solved; meanwhile, the two contactors are covered with the gland at the same time, so that the two contactors share one gland, the reliability of the contactors during assembly can be improved, and the stability of the linkage piece during working can also be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a connection structure of a reversible contactor. Background Art

[0002] The main function of AC contactor is to act as an actuator, which is used to connect and disconnect circuits at a long distance, and can also frequently control the operation of motors and other equipment. It is a kind of low-voltage control appliance widely used in electric traction and automatic control systems. Two AC contactors with the same frame can be assembled into a reversible AC contactor after being combined with a mechanical interlocking mechanism, which is used to control the forward and reverse rotation of the motor. The working principle of mechanical interlocking is that one of the products is attracted, while the other cannot be attracted. At present, the upper connection of the two contactors in mechanical interlocking products is unreliable, which affects the reliability of the product and even causes irreversible consequences. Utility Model Content

[0003] The purpose of the utility model is to provide a connection structure of a reversible contactor to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a connection structure of a reversible contactor, comprising a first contactor and a second contactor, and a linkage member is further provided between the facing surfaces of the first contactor and the second contactor; one end of the linkage member is connected to a contact support inside the first contactor, and the other end of the linkage member is connected to a contact support inside the second contactor; after the first contactor and the second contactor are fitted together, a pressure cover is provided to cover the first contactor and the second contactor at the same time, so that the end of the linkage member away from the contact support swings in the first contactor.

[0005] As a preferred technical solution of the utility model: the linkage member is connected to the contact supports in the first contactor and the second contactor through a hook body.

[0006] As a preferred technical solution of the utility model: a shaft pin seat is provided inside the first contactor, and the linkage member rotates in the shaft pin seat through a support shaft provided.

[0007] As a preferred technical solution of the utility model: a support portion is further provided inside the gland, and the support shaft is pressed onto the shaft pin seat through the support portion.

[0008] As a preferred technical solution of the utility model: the facing surfaces of the first contactor and the second contactor are fitted to form a socket, and a provided plug is adapted to be connected to the socket to connect the first contactor and the second contactor together.

[0009] As a preferred technical solution of the utility model: the latch is in the shape of an elongated strip and is provided with a groove.

[0010] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: the two contactors are chained together by using a linkage member, and when one contactor is attracted, the linkage member is caused to deflect to prevent the contact support of the other contactor from being attracted, thereby solving the problem of phase short circuit caused by the simultaneous attraction of the two contactors, which causes safety accidents; at the same time, the pressure cover is used to cover the two contactors at the same time, so that the two contactors share one pressure cover, which can not only improve the reliability of the contactor assembly, but also improve the stability of the linkage member when it is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0012] Figure 2 This is a schematic diagram of the main structure of the first contactor of the utility model;

[0013] Figure 3 It is a cross-sectional schematic diagram of the main structure of the utility model;

[0014] Figure 4 for Figure 3 A local enlarged schematic diagram of the middle A;

[0015] Figure 5 It is an exploded schematic diagram of the main structure of the utility model;

[0016] Figure 6 for Figure 5 A partial enlarged schematic diagram of point B in the middle;

[0017] Figure 7 It is a schematic diagram of the main structure of the linkage member of the utility model;

[0018] Figure 8 This is a schematic diagram of the main structure of the latch of the utility model;

[0019] Fig. 9 It is a schematic diagram of the main structure of the gland of the utility model.

[0020] In the figure: 1. first contactor; 2. second contactor; 3. pressure cover; 4. linkage member; 5. support part; 6. contact support; 7. latch; 8. socket; 9. support shaft; 10. hook body; 11. shaft pin seat; 12. groove. DETAILED DESCRIPTION

[0021] Embodiments of the present utility model are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present utility model, and should not be construed as limitations on the present utility model. In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "upper surface", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present utility model.

[0022] See also Figure 1-9 The utility model provides an embodiment: a connection structure of a reversible contactor, comprising a first contactor 1 and a second contactor 2, and a linkage member 4 is further provided between the facing surfaces of the first contactor 1 and the second contactor 2; one end of the linkage member 4 is connected to a contact support 6 inside the first contactor 1, and the other end of the linkage member 4 is connected to a contact support 6 inside the second contactor 2; after the first contactor 1 and the second contactor 2 are fitted to each other, a pressure cover 3 is provided to cover the first contactor 1 and the second contactor 2 at the same time, so that the end of the linkage member 4 away from the contact support 6 swings in the first contactor 1.

[0023] In summary, the two contactors are interlocked together by using the linkage member 4. When one contactor is attracted, the linkage member 4 is deflected to prevent the contact support 6 of the other contactor from being attracted. Therefore, the problem of phase-to-phase short circuit caused by the simultaneous attraction of the two contactors, which may cause safety accidents, can be solved. At the same time, the pressure cover 3 is used to cover the two contactors at the same time, so that the two contactors share one pressure cover 3, which can not only improve the reliability of the contactor assembly, but also improve the stability of the linkage member 4 when it is working.

[0024] Specifically, the linkage member 4 is connected to the contact supports 6 in the first contactor 1 and the second contactor 2 through the provided hook body 10, so that the hook body 10 can be conveniently hooked on the contact supports 6 of the two contactors to improve the reliability of the linkage member 4 and the contact support 6 when they are linked.

[0025] Furthermore, since the first contactor 1 is provided with a shaft pin seat 11 inside, and the linkage member 4 rotates in the shaft pin seat 11 through the support shaft 9 provided, when one of the contact supports 6 is attracted, the support shaft 9 rotates on the shaft pin seat 11 to prompt the other end of the linkage member 4 to pry the other contact support 6 to prevent it from being attracted.

[0026] Furthermore, since a support portion 5 is also provided inside the pressure cover 3, and the support shaft 9 is pressed onto the shaft pin seat 11 through the support portion 5, the mutual cooperation between the support portion 5 and the shaft pin seat 11 can be utilized to ensure stable and reliable operation of the linkage member 4.

[0027] To sum up, the linkage member 4 of the device is not only simple in structure, but also utilizes two hooks to contact the corresponding contact supports 6, and utilizes the support portion 5 to cooperate with the shaft pin seat 11, so that the linkage member 4 can only rotate within the support portion 5 and the shaft pin seat 11, and thus the two hooks 10 on the linkage member 4 can only swing, that is, one end is tilted up and the other end is bound to fall down, just like the working principle of a seesaw, so it can effectively and reliably prevent the contact supports 6 inside the two contactors from being synchronously attracted.

[0028] On the basis of the above solution, since the facing surfaces of the first contactor 1 and the second contactor 2 are fitted to form a socket 8, and the provided plug 7 is adapted to connect with the socket 8, so as to connect the first contactor 1 and the second contactor 2 together. Therefore, the backs of the two contactors can also be reliably fixed under the action of the plug 7 and the socket 8.

[0029] Furthermore, the plug 7 is in the shape of a long strip, and a groove 12 is provided on the plug 7, so the groove 12 can be used to adapt and connect with the protruding part inside the socket 8 to further improve the stability of the two contactors being attached together. Based on this, the device uses an integrated pressure cover 3 to press on the front of the two contactors, and uses the plug 7 to insert into the back of the two contactors, so that after the two contactors are attached together, the structure is stable and reliable.

[0030] The above is a detailed description of the embodiments of the present invention in conjunction with the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A connection structure of a reversible contactor, characterized in that: It comprises a first contactor (1) and a second contactor (2), and a linkage member (4) is provided between the facing surfaces of the first contactor (1) and the second contactor (2); One end of the linkage member (4) is connected to a contact support (6) inside the first contactor (1), and the other end of the linkage member (4) is connected to a contact support (6) inside the second contactor (2); After the first contactor (1) and the second contactor (2) are fitted together, a pressure cover (3) is used to cover the first contactor (1) and the second contactor (2) at the same time, so that the end of the linkage member (4) away from the contact support (6) swings inside the first contactor (1).

2. A connection structure of a reversible contactor according to claim 1, characterized in that: The linkage member (4) is connected to the contact supports (6) in the first contactor (1) and the second contactor (2) via a hook (10).

3. A connection structure of a reversible contactor according to claim 2, characterized in that: A shaft pin seat (11) is provided inside the first contactor (1), and the linkage member (4) rotates inside the shaft pin seat (11) via a support shaft (9) provided therein.

4. A connection structure of a reversible contactor according to claim 3, characterized in that: A support portion (5) is also provided inside the pressure cover (3), and the support shaft (9) is pressed onto the shaft pin seat (11) through the support portion (5).

5. A connection structure of a reversible contactor according to any one of claims 1 to 4, characterized in that: The facing surfaces of the first contactor (1) and the second contactor (2) are fitted together to form a socket (8), and a plug (7) is provided to fit and connect with the socket (8) so as to connect the first contactor (1) and the second contactor (2) together.

6. A connection structure of a reversible contactor according to claim 5, characterized in that: The latch (7) is in the shape of an elongated strip and is provided with a groove (12).

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