Relay with auxiliary contact

Abstract

The utility model relates to a relay with an auxiliary contact, the auxiliary contact comprises an auxiliary movable contact piece, the auxiliary movable contact piece is an elastic body with elastic swing capability, the auxiliary movable contact piece takes a connecting point of the auxiliary movable contact piece and a shell as a fulcrum of elastic swing, and a movable push rod of a main contact system is fixedly provided with a boss. A guide groove in sliding fit with the boss or the movable push rod is formed in the inner side of the shell, the auxiliary movable contact piece comprises a poked part arranged on a sliding path of the boss, and the boss pushes and abuts against the poked part to achieve swing contact between the auxiliary movable contact piece and the auxiliary static contact piece and enable the auxiliary movable contact piece to elastically store energy. According to the utility model, an existing movable push rod on the main contact system is used for triggering the auxiliary movable contact piece to elastically swing, and the auxiliary movable contact piece is reset by means of the elasticity of the auxiliary movable contact piece, so that the on-off control of the auxiliary contact can be realized without adding other driving structures, the internal structure of the relay is kept compact, the number of parts is reduced, and the cost is reduced. And the relay is easier to assemble.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of switch electric appliances, concretely relates to a relay with auxiliary contact. BACKGROUND

[0002] In the relay circuit design time, often through auxiliary contact to realize when the relay action needs to complete other logic operation, for example, an auxiliary contact and the main contact system of relay act simultaneously, to be used as signal transmission or feedback, at present, some relays on the market switch control of auxiliary contact depends on in the relay inside additional transmission component or drive component, this one hand makes the part of relay increase, more not easy to assemble, the other hand is easy to squeeze the internal space of relay, causes the problem of the volume of relay increases. SUMMARY

[0003] In view of above problem, the utility model provides a more optimized relay with auxiliary contact.

[0004] The utility model discloses the following technical scheme realizes:

[0005] The utility model discloses a relay with auxiliary contact, including the shell and main contact system, the main contact system includes the dynamic contact part that realizes the switching on or breaking of relay through its opposite static contact part activity, is equipped with the activity cavity of dynamic contact part in the shell, still include auxiliary contact, the auxiliary contact includes auxiliary dynamic contact piece and auxiliary static contact piece, and auxiliary dynamic contact piece and auxiliary static contact piece all extend from the activity cavity and go out the shell, and auxiliary dynamic contact piece and auxiliary static contact piece are fixedly connected to the shell, wherein at least auxiliary dynamic contact piece is the elastic body with elastic swing ability, and auxiliary dynamic contact piece takes its and the shell's connecting point as the fulcrum of elastic swing, the main contact system includes the activity push rod of drive dynamic contact part, is equipped with the boss on the activity push rod, and the guide groove of sliding cooperation with the boss or activity push rod is equipped on the inboard of shell, wherein, auxiliary dynamic contact piece includes the driven part on the sliding path of boss, and through the boss push and resist the driven part realizes the swing contact of auxiliary dynamic contact piece and auxiliary static contact piece and makes auxiliary dynamic contact piece elastic energy storage.

[0006] Wherein, preferably, the auxiliary dynamic contact piece and auxiliary static contact piece extend out of the shell from the width direction of the relay.

[0007] Wherein, preferably, the auxiliary dynamic contact piece includes an auxiliary dynamic contact point, the auxiliary dynamic contact point and the fulcrum are on the same side of the activity push rod, and a piece body is additionally extended from the position of the auxiliary dynamic contact point to the activity push rod in the width direction of the relay as the driven part.

[0008] Wherein, preferably, the auxiliary dynamic contact piece and auxiliary static contact piece extend out of the shell from the height direction of the relay.

[0009] Preferably, the auxiliary moving contact piece comprises an auxiliary moving contact point, the auxiliary moving contact point and the fulcrum are located on both sides of the movable push rod, and the piece body between the auxiliary moving contact point and the fulcrum serves as the moved part.

[0010] Preferably, the auxiliary moving contact piece comprises an auxiliary moving contact point, the moved part and the auxiliary moving contact point are staggered.

[0011] Preferably, the guide groove is integrally formed on the shell.

[0012] Preferably, the boss protrudes from the radial direction of the movable push rod.

[0013] The utility model has the following beneficial effects: the utility model triggers the elastic swing of the auxiliary moving contact piece with the help of the existing movable push rod on the main contact system, and the reset of the auxiliary moving contact piece is realized with the help of the elasticity of the auxiliary moving contact piece itself, so that the switch control of the auxiliary contact point can be realized without adding other driving structures, the internal structure of the relay is kept compact, the number of parts is reduced, and the relay is easier to assemble. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is a perspective view of the relay with the auxiliary contact point in the embodiment (part of the shell is hidden to see the internal structure of the relay);

[0015] Figure 2 is a front view of the relay with the auxiliary contact point in the embodiment;

[0016] Figure 3 is a schematic view of the movable push rod in the embodiment;

[0017] Figure 4 is a schematic view of the shell provided with the guide groove matched with the movable push rod in the embodiment;

[0018] Figure 5 is a schematic view of a variant of the embodiment;

[0019] Figure 6 is a schematic view of the shell provided with the guide groove matched with the boss in the embodiment. DETAILED DESCRIPTION

[0020] To further illustrate the embodiments, the utility model provides drawings. These drawings are part of the disclosure of the utility model, mainly used to illustrate the embodiments, and can be used to explain the operation principle of the embodiments in cooperation with the related description of the specification. With reference to these contents, those skilled in the art should understand other possible embodiments and the advantages of the utility model. The components in the drawings are not drawn according to scale, and similar component symbols are usually used to represent similar components.

[0021] The utility model is further illustrated in combination with the drawings and specific embodiments.

[0022] Referring to Figure 1 and Figure 2 As a preferred embodiment of the utility model, a relay with auxiliary contact is provided, which comprises a shell 100 and a main contact system 200. The shell 100 is shaped as a box-like structure, and the main contact system 200 is accommodated in the inner cavity of the shell 100. The main contact system 200 comprises a movable contact part 201 and a static contact part 202. The movable contact part 201 is arranged in a movable cavity 101 in the shell 100. The relay is turned on or broken by the movement of the movable contact part 201 relative to the static contact part 202.

[0023] The relay further comprises an auxiliary contact 3, which comprises an auxiliary movable contact piece 31 and an auxiliary static contact piece 32. Both the auxiliary movable contact piece 31 and the auxiliary static contact piece 32 extend out of the shell 100 from the movable cavity 101. The auxiliary movable contact piece 31 and the auxiliary static contact piece 32 are fixedly connected to the shell. At least the auxiliary movable contact piece 31 is an elastic body with elastic swinging capability, for example, the auxiliary movable contact piece 31 is a reed. The auxiliary movable contact piece 31 takes the connecting point with the shell 100 as the fulcrum P of elastic swinging. In this embodiment, both the auxiliary movable contact piece 31 and the auxiliary static contact piece 32 are inserted and fixed to the shell 100. The main contact system 200 further comprises a movable push rod 203 for driving the movable contact part 201, for example, Figure 3 and Figure 4 A boss 4 is fixedly arranged on the movable push rod 203, and a guide groove 5 is arranged on the inner side of the shell 100 and is in sliding cooperation with the movable push rod 203. The sliding limit of the movable push rod 203 is realized through the guide groove 5, so that the position stability of the boss 4 is improved. In this embodiment, a slide contact surface 2031 in the shape of a cut edge is arranged on the movable push rod 203, and the slide contact surface 2031 is in sliding cooperation with the guide groove 5. The auxiliary movable contact piece 31 comprises a pushed part 311 arranged on the slide path of the boss 4. When the movable push rod 203 moves, the movable contact part 201 is driven to move close to the static contact part 202 to turn on the main circuit. At the same time, the boss 4 on the movable push rod 203 pushes against the pushed part 311 to realize the swinging contact between the auxiliary movable contact piece 31 and the auxiliary static contact piece 32, so as to turn on the auxiliary circuit. Since the auxiliary movable contact piece 31 is an elastic reed, it is elastically stored after being pushed. Once the movable push rod 203 is reset and the boss 4 removes the pressure on the pushed part 311, the auxiliary movable contact piece 31 can be elastically reset. Therefore, the synchronous switching of the main circuit and the auxiliary circuit is realized.

[0024] The elastic swing of the auxiliary movable contact 31 is triggered by the existing movable push rod 203 on the main contact system 200, and the reset of the auxiliary movable contact 31 is realized by the elasticity of the auxiliary movable contact 31 itself, so that the switch control of the auxiliary contact 3 can be realized without adding other driving structures, the internal structure of the relay is kept compact, the number of parts is reduced, and the relay is easier to assemble.

[0025] In the embodiment, the guide groove 5 is integrally formed on the shell 100. The boss 4 protrudes from the radial direction of the movable push rod 203 to avoid interference with other components on the movable push rod 203.

[0026] In the embodiment, the auxiliary movable contact 31 includes an auxiliary movable contact 310, wherein the actuated part 311 and the auxiliary movable contact 310 are staggered, which can more flexibly set the position of the auxiliary movable contact 310 in the limited space of the movable cavity 101.

[0027] As shown in the drawings, Figure 1 The auxiliary contact 3 can be drawn out from the width direction of the shell 100 or from the height direction of the shell 100 according to the needs of different products. For example, in the embodiment, the auxiliary contact 3 is drawn out from the width direction of the shell 100, the auxiliary movable contact 310 and the fulcrum P are on the same side of the movable push rod 203, the auxiliary movable contact 310 is more compactly arranged in the space on the side of the movable push rod 203 along the width direction, and the actuated part 311 is a piece of the body extending from the position of the auxiliary movable contact 310 to the movable push rod 203 in the width direction. Figure 5 A variant of the embodiment is shown, in which the auxiliary movable contact 31A and the auxiliary static contact 32A are drawn out from the shell 100 in the height direction of the relay, the auxiliary movable contact 310A and the fulcrum P' are on both sides of the movable push rod 203, and the piece between the auxiliary movable contact 310A and the fulcrum P' is the actuated part. This structure can further expand the width of the pins of the auxiliary movable contact 31A and the auxiliary static contact 32A, and facilitate the arrangement of the structure on the back side of the relay. Referring to Figure 6 In addition, in this variant, a guide groove 5A is arranged on the inner side of the shell 100 to slide with the movable boss 4, that is, the boss 4 slides with the guide groove 5A arranged in the shell 100 in this embodiment.

[0028] Although the utility model is specifically shown and introduced in combination with the preferred embodiment, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all fall within the protection scope of the utility model.

Claims

1. A relay with auxiliary contacts, comprising a housing and a main contact system comprising a movable contact which, by its movement relative to a stationary contact, effects the making or breaking of the relay, in the housing there being provided a movement chamber for the movable contact, characterized in that: The auxiliary contact further comprises an auxiliary movable contact piece and an auxiliary fixed contact piece, both of which extend out of the shell from the movable cavity, and are fixedly connected to the shell, wherein at least the auxiliary movable contact piece is an elastic body with elastic swinging capability, and the auxiliary movable contact piece swings around the connection point between the auxiliary movable contact piece and the shell as the fulcrum of elastic swinging.

2. The relay with auxiliary contact according to claim 1, characterized in that: The auxiliary movable contact piece and the auxiliary fixed contact piece extend out of the shell from the width direction of the relay.

3. The relay with auxiliary contact according to claim 2, characterized in that: The auxiliary movable contact piece comprises an auxiliary movable contact point and a fulcrum, both of which are on the same side of the movable push rod, and the auxiliary movable contact piece extends out of the auxiliary movable contact point by a piece body as the driven part in the width direction of the relay.

4. The relay with auxiliary contact according to claim 1, characterized in that: The auxiliary movable contact piece and the auxiliary fixed contact piece extend out of the shell from the height direction of the relay.

5. The relay with auxiliary contact according to claim 1, characterized in that: The auxiliary movable contact piece comprises an auxiliary movable contact point and a fulcrum, both of which are on the two sides of the movable push rod, and the piece body between the auxiliary movable contact point and the fulcrum is the driven part.

6. The relay with auxiliary contact according to claim 1, characterized in that: The auxiliary movable contact piece comprises an auxiliary movable contact point, and the driven part is staggered with the auxiliary movable contact point.

7. The relay with auxiliary contact according to claim 1, characterized in that: The guide groove is integrally formed on the shell.

8. The relay with auxiliary contact according to claim 1, characterized in that: The boss protrudes from the radial direction of the movable push rod.

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