CN214012842U - Counter-force spring limit structure of contactor - Google Patents

Abstract

The utility model relates to a counter force spring limit structure of contactor, it includes the base, be equipped with the guide post on the base, the guide post is equipped with the guide way that can hold counter force spring, one side of guide way is equipped with the exhaust hole. Be provided with the guide post on the base, utilize the design of guide way in the guide post, can restrict reaction spring in this guide way, its multiplicable reaction spring and the creepage distance of iron core, it is more stable to move simultaneously, has improved product life, and because of the circumference restriction, the risk of reaction spring slope can not appear.

Description

Counter-force spring limit structure of contactor

Technical Field

The utility model relates to a low-voltage apparatus technical field, concretely relates to counter-force spring limit structure of contactor.

Background

In the prior art, a contactor is usually provided with a movable iron core on a contact support, and the movable iron core is attracted by magnetic force generated by a coil to move so as to drive the contact support to move, so that a contact is switched on or switched off; when the coil is powered off and loses magnetism, the movable iron core resets under the action of the counter-force spring. Therefore, a conical reaction spring is generally sleeved on the movable iron core, one end of the reaction spring is sleeved on the movable iron core, and the other end of the reaction spring abuts against the coil framework matched with the contact support.

For example, chinese patent CN 205752028U discloses a contactor, which is provided with bosses on both sides of a stationary iron core, and then a reaction spring is pressed on the bosses, and baffles are provided beside the bosses to increase the creepage distance between the spring and the iron core. However, in this structure, when the contactor is operated, the reaction spring has a risk of inclining to both sides and even interfering with the baffle because the boss guide distance is short.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a counter force spring limit structure of contactor.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a counter force spring limit structure of contactor, its includes the base, be equipped with the guide post on the base, the guide post is equipped with the guide way that can hold counter force spring, one side of guide way is equipped with the exhaust hole.

And reinforcing ribs are arranged on two sides of the guide post.

And a plurality of radiating grooves are formed in the side wall of the base.

The exhaust hole is arranged towards the direction of the heat dissipation groove.

The exhaust hole is of a strip-shaped structure, is axially arranged along the guide post, and is open at the upper end.

One end of the counter-force spring is provided with a hook, and the hook can be arranged in the exhaust hole.

And a chamfer is arranged at the top end of the guide groove in the circumferential direction.

The utility model has the advantages that: be provided with the guide post on the base, utilize the design of guide way in the guide post, can restrict reaction spring in this guide way, its multiplicable reaction spring and the creepage distance of iron core, it is more stable to move simultaneously, has improved product life, and because of the circumference restriction, the risk of reaction spring slope can not appear.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged schematic view of a point a in fig. 1.

Fig. 3 is a schematic structural view of the seat of the present invention.

Fig. 4 is a front view of the base of the present invention.

Fig. 5 is an enlarged schematic view of B in fig. 4.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in the figure, the utility model provides a counter force spring limit structure of contactor, it includes base 1, be equipped with guide post 2 on the base, the guide post is equipped with guide way 21 that can hold counter force spring, one side of guide way is equipped with exhaust hole 6, and wherein the degree of depth of guide way can decide the height of the lateral wall of guide post, utilizes the lateral wall of guide post to realize the insulation between counter force spring and the coil, has increased the creepage distance between counter force spring 3 and the coil, prevents to take place the short circuit, and the design of guide way can also play fixed counter force spring's effect in addition, prevents that it from taking place the slope when the atress compresses, plays multiple effect, simplified structure.

And chamfer 22 is provided at the top end circumference of the guide groove 21 to give a guide function to the reaction spring, thereby facilitating installation.

The both sides of guide post 2 all are equipped with strengthening rib 5, utilize the strengthening rib 5 on both sides to be connected with base lateral wall and yoke installation cell wall respectively, can improve the intensity of guide post.

Be equipped with a plurality of radiating grooves 4 on the lateral wall of base, the exhaust hole sets up towards the radiating groove direction, and the gas outgoing of being convenient for does not influence the contactor and inhales the counter-force.

Exhaust hole 6 is the strip structure, and its sets up along the guide post axial, and its upper end opening, the one end of reaction spring 3 is equipped with couple 31, just the couple can be arranged in the exhaust hole, utilize reaction spring's couple card to go into the gas vent, can prevent that the spring from rotating, plays fixed effect.

The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims (7)

1. The utility model provides a counter force spring limit structure of contactor which characterized in that: the anti-force spring device comprises a base, wherein a guide post is arranged on the base, a guide groove capable of accommodating a counter-force spring is formed in the guide post, and an exhaust hole is formed in one side of the guide groove.

2. The reaction spring limit structure of a contactor according to claim 1, wherein: and reinforcing ribs are arranged on two sides of the guide post.

3. The reaction spring limit structure of a contactor according to claim 1, wherein: and a plurality of radiating grooves are formed in the side wall of the base.

4. The reaction spring limit structure of a contactor according to claim 3, wherein: the exhaust hole is arranged towards the direction of the heat dissipation groove.

5. The reaction spring limit structure of a contactor according to claim 1 or 4, wherein: the exhaust hole is of a strip-shaped structure, is axially arranged along the guide post, and is open at the upper end.

6. The reaction spring limit structure of a contactor according to claim 5, wherein: one end of the counter-force spring is provided with a hook, and the hook can be arranged in the exhaust hole.

7. The reaction spring limit structure of a contactor according to claim 1, wherein: and a chamfer is arranged at the top end of the guide groove in the circumferential direction.

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