CN213212059U

CN213212059U - Relay of anti-vibration impact

Info

Publication number: CN213212059U
Application number: CN202022480758.3U
Authority: CN
Inventors: 唐俊平
Original assignee: Sanyou Corp Ltd
Current assignee: Sanyou Corp Ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-05-14
Anticipated expiration: 2030-10-30

Abstract

The utility model relates to a relay technical field, concretely relates to relay of anti-vibration impact is equipped with the anti vibration elastic component between fixed iron core and the armature, and under the state of coil outage, the anti vibration elastic component has the clearance of movement between fixed iron core and armature, and this clearance of movement is less than the distance between static contact and the moving contact, and the elastic coefficient of anti vibration elastic component is greater than the elastic coefficient that resets the elastic component. When the vibration range of the armature tends to be larger than the movable gap, the anti-vibration elastic piece can apply buffering anti-vibration force to the armature, so that the armature vibrates in the range of the movable gap, the armature is prevented from vibrating in an overlarge amplitude, and the anti-vibration performance is improved. After the coil is electrified, the armature moves towards the fixed iron core under the action of attraction force, the reset elastic piece is compressed, the anti-vibration elastic piece is contacted with the fixed iron core and the armature and then compressed along with the movement of the armature, and when the mutual attraction force between the armature and the fixed iron core is large enough, the counter-acting force of the anti-vibration elastic piece is overcome, so that the fixed contact and the moving contact are closed.

Description

Relay of anti-vibration impact

Technical Field

The utility model relates to a relay technical field, concretely relates to relay of anti-vibration impact.

Background

As a component for controlling high voltage at low voltage, a relay is widely applied to various high-voltage devices, so that people can safely control various large devices, thereby avoiding the danger of electric shock. Through the development of many years, the types of relays are more and more, and a push-rod relay is just one of the relays, and the operating principle of the push-rod relay is that after a coil is electrified, an armature and a push rod are attracted by a fixed iron core to move upwards, so that a moving contact connected to the push rod is driven to be in contact with a fixed contact, and the electrification of a high-voltage end is realized.

And a reset spring is arranged between the fixed iron core and the armature, so that after the coil is powered off, the reset spring pushes the armature and the push rod to move downwards for resetting, and the moving contact is separated from the static contact. Because the stroke of the moving contact is small, the armature can be pushed to reset only by small force, so that a reset spring with a small elastic coefficient is generally adopted, and if the reset spring with a large elastic coefficient is adopted, the coil can overcome the acting force of the reset spring to drive the push rod only by introducing large current all the time. Under the condition that the coil is powered off, the return spring with a smaller elastic coefficient is in a relaxed state or a state with a smaller compressed degree, and the acting force exerted on the armature is small, so that when the relay is impacted or vibrated, the armature can jump in the whole moving stroke, and the anti-seismic performance is poor.

Disclosure of Invention

There is above-mentioned technical problem to prior art, the utility model provides a relay of anti-vibration impact can avoid the too big range vibration of armature when the outage.

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

the anti-vibration impact relay comprises a shell and a fixed contact arranged on the shell, wherein an electromagnetic assembly and a push rod assembly are arranged in the shell, the electromagnetic assembly comprises a fixed iron core, an armature, a coil and a reset elastic piece, the coil is wound outside the armature and the fixed iron core, the armature can move towards the fixed iron core, the reset elastic piece is used for applying reset force to the armature, the push rod assembly comprises a rod body and a movable contact which is sleeved at the upper end of the rod body and used for abutting against the fixed contact, and the rod body is connected with the armature; and a vibration-proof elastic part is arranged between the fixed iron core and the armature, and in a state that the coil is powered off, a movable gap is formed between the fixed iron core and the armature by the vibration-proof elastic part and is smaller than the distance between the fixed contact and the movable contact, and the elastic coefficient of the vibration-proof elastic part is larger than that of the reset elastic part.

Preferably, the anti-vibration elastic piece is placed on the armature, and the movable gap is positioned between the end part of the anti-vibration elastic piece and the fixed iron core; or one end of the anti-vibration elastic piece is connected with the fixed iron core, and the movable gap is positioned between the end part of the anti-vibration elastic piece and the armature.

Preferably, the elastic restoring element is located between the fixed iron core and the armature, and the bottom of the fixed iron core and the top of the armature are respectively provided with a first positioning groove for inserting two ends of the elastic restoring element.

Preferably, the bottom of the fixed iron core is provided with a second positioning groove for inserting the anti-vibration elastic element.

Preferably, the return elastic member and the anti-vibration elastic member are both springs and are coaxially arranged.

Preferably, the rod body is sleeved with a rod sleeve at the outer side, and the end part of the rod sleeve is inserted into the armature in an interference fit manner.

Preferably, the rod sleeve is provided with a limiting protrusion, and the top of the fixed iron core is provided with a limiting step capable of supporting the limiting protrusion upwards.

The utility model has the advantages that:

the utility model discloses a relay of anti-vibration impact, under the state of coil outage, owing to be equipped with the anti vibration elastic component that elastic coefficient ratio elastic component is big that resets between fixed iron core and the armature, consequently when the vibration range trend of armature is greater than the clearance, the anti vibration elastic component can exert buffering anti-vibration force to armature for armature is at clearance within range internal vibration, avoids the too big range vibration of armature, thereby improves the shock resistance. After the coil is electrified, the armature moves towards the fixed iron core under the action of attraction force, the reset elastic piece is compressed, the anti-vibration elastic piece is contacted with the fixed iron core and the armature and then compressed along with the movement of the armature, and when the mutual attraction force between the armature and the fixed iron core is large enough, the counter-acting force of the anti-vibration elastic piece is overcome, so that the fixed contact and the moving contact are closed.

Drawings

Fig. 1 is a schematic structural view of a relay resistant to vibration shock in the embodiment.

Reference numerals:

a housing 1;

a static contact 2;

the electromagnetic component 3, the fixed iron core 31, the first positioning groove 311, the second positioning groove 312, the limit step 313, the armature 32, the coil 33 and the reset elastic piece 34;

the push rod component 4, the rod body 41, the rod sleeve 42, the limit bulge 421 and the moving contact 43;

and an anti-vibration elastic member 5.

Detailed Description

The present invention will be described in detail with reference to the following embodiments and accompanying drawings.

The relay resisting vibration and impact of the embodiment, as shown in fig. 1, including a housing 1 and a fixed contact 2 arranged on the housing 1, an electromagnetic assembly 3 and a push rod assembly 4 are arranged in the housing 1, the electromagnetic assembly 3 includes a fixed iron core 31, an armature 32, a coil 33 and a reset elastic member 34, the coil 33 is wound outside the armature 32 and the fixed iron core 31, the armature 32 can move towards the fixed iron core 31, the reset elastic member 34 is used for applying a reset force to the armature 32, the push rod assembly 4 includes a rod body 41 and a movable contact 43 sleeved on the upper end portion of the rod body 41 and used for abutting against the fixed contact 2, and the rod body 41 is connected with the armature 32. The anti-vibration elastic member 5 is arranged between the fixed iron core 31 and the armature 32, when the coil 33 is powered off, the anti-vibration elastic member 5 has a movable gap between the fixed iron core 31 and the armature 32, the movable gap is smaller than the distance between the fixed contact 2 and the movable contact 43, and the elastic coefficient of the anti-vibration elastic member 5 is larger than that of the reset elastic member 34.

When the coil 33 is powered off, because the anti-vibration elastic member 5 with a larger elastic coefficient than the return elastic member 34 is arranged between the fixed iron core 31 and the armature 32, when the vibration range of the armature 32 tends to be larger than the movable gap, the anti-vibration elastic member 5 can apply a buffering anti-vibration force to the armature 32, so that the armature 32 vibrates in the movable gap range, and the armature 32 is prevented from vibrating too much, thereby improving the anti-vibration performance. When the coil 33 is energized, the armature 32 is attracted toward the fixed core 31, and the return elastic member 34 is compressed, and as the armature 32 moves, the anti-vibration elastic member 5 contacts the fixed core 31 and the armature 32 and is compressed, and when the attraction force between the armature 32 and the fixed core 31 is large enough, the reaction force of the anti-vibration elastic member 5 is overcome, so that the fixed contact 2 and the movable contact 43 are closed. The elastic coefficient of the reset elastic piece 34 can be made very small, the force value is small, and the reset elastic piece can be attracted well in the initial period; the elastic coefficient of the anti-vibration elastic piece 5 can be made to be very large, the contact is resisted to be closed before the movable contact and the static contact are not closed, and the anti-vibration and impact performance of a product can be improved.

In the present embodiment, the vibration-resistant elastic member 5 is placed on the armature 32, and the movable gap is located between the end of the vibration-resistant elastic member 5 and the fixed iron core 31. In practice, one end of the vibration-resistant elastic member 5 may be connected to the fixed iron core 31 instead, and the movable gap may be located between the end of the vibration-resistant elastic member 5 and the armature 32, as long as the vibration-resistant elastic member 5 has a movable gap between the fixed iron core 31 and the armature 32.

In this embodiment, the elastic resetting member 34 is located between the fixed iron core 31 and the armature 32, the bottom of the fixed iron core 31 and the top of the armature 32 are respectively provided with a first positioning slot 311 for inserting two ends of the elastic resetting member 34, and the bottom of the fixed iron core 31 is provided with a second positioning slot 312 for inserting the anti-vibration elastic member 5, so that the installation is convenient and the structure is stable. The return elastic member 34 and the anti-vibration elastic member 5 are both springs, and are arranged coaxially.

In this embodiment, the rod 41 is sleeved with a rod sleeve 42, and the end of the rod sleeve 42 is inserted into the armature 32 in an interference fit manner, so as to facilitate installation. The rod sleeve 42 is provided with a limiting protrusion 421, and the top of the fixed iron core 31 is provided with a limiting step 313 capable of supporting the limiting protrusion 421 upwards, so that the mutual matching and limiting are realized.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A relay resisting vibration and impact comprises a shell and a fixed contact arranged on the shell, wherein an electromagnetic assembly and a push rod assembly are arranged in the shell, the electromagnetic assembly comprises a fixed iron core, an armature, a coil and a reset elastic piece, the coil is wound outside the armature and the fixed iron core, the armature can move towards the fixed iron core, the reset elastic piece is used for applying reset force to the armature, the push rod assembly comprises a rod body and a movable contact which is sleeved at the upper end of the rod body and used for abutting against the fixed contact, and the rod body is connected with the armature; the method is characterized in that: and a vibration-proof elastic part is arranged between the fixed iron core and the armature, and in a state that the coil is powered off, a movable gap is formed between the fixed iron core and the armature by the vibration-proof elastic part and is smaller than the distance between the fixed contact and the movable contact, and the elastic coefficient of the vibration-proof elastic part is larger than that of the reset elastic part.

2. A relay according to claim 1, wherein: the anti-vibration elastic piece is placed on the armature, and the movable gap is positioned between the end part of the anti-vibration elastic piece and the fixed iron core; or one end of the anti-vibration elastic piece is connected with the fixed iron core, and the movable gap is positioned between the end part of the anti-vibration elastic piece and the armature.

3. A relay according to claim 1, wherein: the reset elastic piece is positioned between the fixed iron core and the armature, and the bottom of the fixed iron core and the top of the armature are respectively provided with a first positioning groove for inserting two ends of the reset elastic piece.

4. A relay according to claim 1 or 3, being resistant to vibration shocks, wherein: and a second positioning groove for inserting the anti-vibration elastic piece is formed at the bottom of the fixed iron core.

5. A relay according to claim 4, wherein: the reset elastic piece and the anti-vibration elastic piece are both springs and are coaxially arranged.

6. A relay according to claim 1, wherein: the outside cover of the body of rod has the pole cover, and the tip of pole cover inserts in the armature with interference fit.

7. A relay of claim 6, wherein: the rod sleeve is provided with a limiting bulge, and the top of the fixed iron core is provided with a limiting step capable of supporting the limiting bulge upwards.