CN217086483U - Push rod type relay for reducing release amplitude of movable contact spring - Google Patents

Abstract

The utility model discloses a push-rod relay for reducing the release amplitude of a movable spring, which comprises a movable spring component and a static spring component, wherein the bottom of the movable spring component is assembled on a base; the middle part of the movable spring is connected with the armature of the magnetic circuit part through a straight rod structure push card, the push rod type relay further comprises a stop block component assembled on the base, the stop block component comprises a vibration reduction stop block used for reducing the swing amplitude of the movable spring in the elastic potential energy release process, and the vibration reduction stop block corresponds to the upper area of the movable spring. The utility model discloses an install the damping dog on the base, when the movable contact spring resets, the movable contact spring can be along with the inertia to the opposite direction motion, and the damping dog supports and blocks the movable contact spring, absorbs the kinetic energy of the opposite direction motion of movable contact spring, reduces the amplitude of movable contact spring to solve the problem that the movable contact spring can take place the great reciprocating vibration of range along with the release of elastic potential energy, guaranteed product stability and life.

Description

Push rod type relay for reducing release amplitude of movable contact spring

Technical Field

The utility model relates to a relay specifically is a push-down relay that reduces movable contact spring release amplitude.

Background

The push-down relay mainly comprises a coil frame, an iron core, a coil, a yoke, an armature and a pressure spring which are assembled on the coil frame, a movable spring and a static spring which are assembled on a base of the coil frame, a push card which is assembled between the armature and the movable spring, a shell which contains and covers the coil frame and components thereon, and the like. The working principle is that when current is switched on at two ends of a coil lead-out pin, exciting current of the coil can generate magnetic flux, the magnetic flux forms a magnetic circuit through a working air gap among an iron core, a yoke and an armature, and electromagnetic attraction is generated in the working air gap; when the exciting current rises to a certain value, the electromagnetic attraction torque overcomes the counter torque of the movable reed to rotate the armature, so as to drive the pushing card to push the movable reed, and make the movable contact on the movable reed and the fixed contact on the fixed reed close/open; when the exciting current is reduced to a certain value, the counter moment of the movable spring is larger than the electromagnetic attracting moment, the counter moment of the movable spring pushes the push card, so that the armature is driven to rotate, the armature returns to the initial state, and the movable contact on the movable spring is disconnected with/closed to the static contact on the static spring.

The extension height of the movable reed of the push-down relay on the coil frame base is higher, the push point of the push card is generally in the middle of the movable reed, and the movable reed above the push card is completely in a suspended state. When the movable contact spring of the relay loses the pushing force of the pushing card to release elastic potential energy, the upper part of the movable contact spring is not restrained due to suspension, the reciprocating vibration with larger amplitude can be generated along with the release of the elastic potential energy, the reciprocating vibration of the movable contact spring can continuously change the fit clearance between the movable contact and the fixed contact on the fixed contact spring, when the fit clearance between the movable contact and the fixed contact is changed to be very small, the movable contact and the fixed contact are easily subjected to secondary breakdown by voltage, so that a lower-level circuit is subjected to a mis-connection phenomenon, and the stability and the reliability of the relay on the circuit control are influenced. In addition, this phenomenon also affects the service life of the relay itself.

In the prior art, in order to solve the above problems, a housing/shell with a limiting block/a damping stop block is mainly adopted to be matched with a movable spring plate, so that the relative movement stroke/swing amplitude of the movable spring plate is limited.

For example: chinese patent document discloses an "electromagnetic relay" (publication No. CN111863534A, published 2020, 10/30), which discloses that stoppers are provided on the inner top of the housing between the stationary contact group and the movable contact group and on the opposite sides of the stationary contact group and the movable contact group, and the relative movement stroke of the stationary contact group and the movable contact group is changed by these stoppers.

Chinese patent document discloses a push-rod relay for reducing the amplitude of the released vibration of a movable spring (publication No. CN214753563U, published 2021, 11/16), which discloses that a vibration-damping stopper is integrally formed on a housing of the push-rod relay, and after the housing is assembled in place on a base of the push-rod relay, the vibration-damping stopper forms a corresponding fit with and staggers a movable contact above a movable contact on the movable spring.

However, adopt housing/casing and movable contact spring complex structure that has stopper/damping dog, need make corresponding casing to different relays alone, simultaneously, in order to reduce the cost, its casing mainly adopts the plastics material to there is the heat resistance poor and can't contact with the movable contact spring, the not good problem of backstop effect. Therefore, the prior art has the technical problems of complex structure, poor heat resistance, poor stopping effect, high manufacturing difficulty and high cost.

Disclosure of Invention

The technical purpose of the utility model is that: aiming at the particularity of the push-rod relay and the defects of the prior art, the push-rod relay is simple in structure, good in heat resistance, good in stopping effect, low in manufacturing difficulty and low in cost.

The technical purpose of the utility model is realized through the following technical scheme:

a push rod type relay for reducing the release amplitude of a movable spring comprises a movable spring component and a static spring component, wherein the bottom of the movable spring component is assembled on a base; the middle part of the movable spring is connected with the armature of the magnetic circuit part through a straight rod structure push card, the push rod type relay further comprises a stop block component assembled on the base, the stop block component comprises a vibration reduction stop block used for reducing the swing amplitude of the movable spring in the elastic potential energy release process, and the vibration reduction stop block corresponds to the upper area of the movable spring.

The stop block component and the movable spring leading-out sheet are integrally formed.

The movable spring leading-out piece comprises a movable spring piece leading-out pin and a movable spring piece mounting part connected with the movable spring piece leading-out pin, the movable spring piece is fixedly mounted on one side of the movable spring piece, and a stop block part extends upwards from the movable spring piece mounting part.

The block part is L-shaped.

The movable reed is obliquely arranged relative to the stop block component, when the relay is reset, an included angle larger than 0 is formed between the movable reed and the stop block component, and the vibration reduction stop block is in contact fit with the movable reed in a static state.

The movable spring piece comprises a second connecting part, a second bending part and a free end, wherein the second connecting part is used for being connected with the movable spring piece mounting part, and the free end is provided with a movable contact; the free end inclines towards the stop block component through the second bending part, and the upper area of the free end is in contact fit with the vibration reduction stop block.

The stop block component comprises a first connecting part provided with a first bending part, and the first connecting part is inclined towards the movable spring leaf through the first bending part.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an install the damping dog on the base, when the movable contact spring resets, the movable contact spring can be along with the inertia to the opposite direction motion, and the damping dog supports and blocks the movable contact spring, absorbs the kinetic energy of the opposite direction motion of movable contact spring, reduces the amplitude of movable contact spring to solve the problem that the movable contact spring can take place the great reciprocating vibration of range along with the release of elastic potential energy, guaranteed product stability and life.

2. The utility model discloses a dog part draws forth piece integrated into one piece with the movable spring, has both solved the movable spring piece and can take place the great reciprocating vibration's of range problem along with the release of elastic potential energy, its simple structure simultaneously, low in manufacturing cost.

3. The utility model discloses a dog part is the L type. The L-shaped structure is adopted, the first connecting part on one side can be reduced, and therefore the manufacturing cost is further reduced. By adopting the technical measure, the device has the technical advantages of simple structure, low manufacturing difficulty and further reduced manufacturing cost.

4. The movable spring leaf of the utility model is obliquely arranged relative to the block part, when the relay is reset, the movable spring leaf and the block part form an included angle larger than 0, and the vibration reduction block is in contact fit with the movable spring leaf in a static state; adopt this technical measure, can reduce the range of bumping into the resilience of damping dog under the effect of stress makes the upper portion region of movable spring leaf to swing range is too big and take place to kick-back when preventing movable spring from reseing, thereby avoids producing the risk of secondary switch-on after the contact disconnection.

4. The movable spring of the utility model comprises a second connecting part connected with the movable spring mounting part, a second bending part and a free end provided with a movable contact; the free end inclines towards the stop block component through the second bending part, and the upper area of the free end is in contact fit with the vibration reduction stop block. The technical measure has the technical advantages of simple structure, simple manufacture and low manufacture cost.

5. The utility model discloses a first connecting portion of dog part are equipped with first kink, make first connecting portion slope to the movable contact spring through first kink. Adopt this technical measure, make the dog part slope right, reduce the distance between the upper portion region of damping dog and movable spring leaf, further reduce and touch the range that the damping dog kick-backed, the swing range is too big and takes place to kick-back when preventing that the movable spring from reseing to avoid the risk that produces the secondary switch-on after the contact disconnection.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the movable spring plate assembly 3 of FIG. 1;

FIG. 3 is another schematic structural view of the movable spring plate assembly 3 of FIG. 1;

FIG. 4 is a front view of FIG. 2;

FIG. 5 is a side view of FIG. 2;

reference numerals: 1-a base; 2-push the card; 3-a movable spring assembly; 31-movable reed; 311-second connection; 312 — a second bending part; 313 — free end; 32-moving contact; 33-moving spring leading-out piece; 331-movable reed leading-out pin; 332-movable spring mounting part; 4-static spring assembly; 5-a stopper member; 51-damping stop block; 52 — a first connection; 53-first bend.

Detailed Description

Specific embodiments of the present invention are described below with reference to the accompanying drawings:

as shown in fig. 1, the utility model relates to a reduce push-down relay of movable contact spring release amplitude, including base 1 and set up in magnetic circuit part, contact site, the propelling movement card 2 of this base 1, magnetic circuit part, propelling movement card 2, contact site are for transversely arranging on base 1 from a left side to the right side.

Specifically, contact part is including establishing movable spring subassembly 3 and quiet spring subassembly 4, and movable spring subassembly 3 includes movable contact spring 31 and movable contact 32, and quiet spring subassembly 4 includes the stationary contact spring and the stationary contact that opens, and movable contact 32 arranges on the right side top of movable contact spring 31, and the stationary contact that opens arranges on the left side top of stationary contact spring, and the stationary contact that opens sets up in opposite directions with movable contact spring. One end of the push card 2 is connected with the movable reed 31, and the other end of the push card 2 is connected with the armature. The middle part of the movable spring 31 pushes the card 2 to be connected with the armature of the magnetic circuit part through the straight rod structure, the movable spring 31 above the card 2 is pushed to be in a suspended state, and after the relay is completely released from an attraction state, the movable spring 31 can generate reciprocating vibration with large amplitude along with the release of elastic potential energy, so that the contact gap is continuously changed.

As shown in fig. 1 to 5, the movable spring assembly 3 further includes a movable spring leading-out piece 33, the movable spring leading-out piece 33 includes a movable spring leading-out pin 331 and a movable spring mounting portion 332, the movable spring mounting portion 332 is in a square shape and is provided with a plurality of mounting protrusions, the movable spring 31 is fixed on one side of the movable spring mounting portion 332 by riveting, and in this embodiment, the movable spring 31 is fixed on the right side of the movable spring leading-out piece 33.

As shown in fig. 1, the present invention further includes a stop member 5 assembled on the base 1, the stop member 5 includes a first connecting portion 52 for connection and a damping stop 51 disposed on the upper end of the first connecting portion 52 for reducing the swing amplitude of the movable spring 31 in the process of releasing the elastic potential energy, and the damping stop 51 corresponds to the upper region of the movable spring 31. In the present embodiment, the stopper member 5 is disposed on the left side of the movable spring plate 31, i.e., in the return direction of the movable spring plate 31. When the movable spring 31 is reset, the movable spring 31 moves in the opposite direction along with the inertia force, the vibration reduction stop block 51 is abutted against the movable spring 31 to absorb the kinetic energy of the movable spring 31 moving in the opposite direction and reduce the amplitude of the movable spring 31, so that the problem that the movable spring 31 can generate reciprocating vibration with large amplitude along with the release of elastic potential energy is solved, and the stability and the service life of a product are ensured.

As shown in fig. 1 to 5, in actual use, the stopper member 5 may be mounted on the base 1 in a separate structure, or may be directly mounted on the movable spring lead-out piece 33. With the separate structure, a new mounting groove and the first connection portion 52 of the extension stopper member 5 need to be formed on the base 1, so that more materials need to be used, the number of mounting steps is increased, the production efficiency is reduced, and the manufacturing cost is increased.

Therefore, in order to improve the production efficiency and reduce the manufacturing cost, the stopper member 5 and the movable spring lead-out piece 33 are integrally formed; specifically, the movable spring mounting portion 332 is extended upward to provide a stopper member 5 having a movable chamber for reciprocating the push card 2. In actual use, the stopper member 5 is made of a metal material, which has a technical advantage of high heat resistance. The stopper member 5 has a gate-shaped structure, and the damper stopper 51 of the stopper member 5 is connected to the movable spring attachment portion 332 via the first connection portion 52. By adopting the structure, the stop block part 5 and the movable spring leading-out sheet 33 can be integrally formed, the problem that the movable spring 31 generates large reciprocating vibration along with the release of elastic potential energy is solved, and meanwhile, the structure is simple and the manufacturing cost is low.

In actual use, the stopper member 5 is L-shaped. With the L-shaped structure, the first connecting portion 52 on one side can be reduced, thereby further reducing the manufacturing cost. By adopting the technical measure, the device has the technical advantages of simple structure, low manufacturing difficulty and further reduced manufacturing cost.

As shown in fig. 5, the movable spring 31 is disposed obliquely with respect to the stopper member 5, and when the relay is reset, the movable spring 31 and the stopper member 5 form an included angle larger than 0, and the vibration reduction stopper 51 is in contact engagement with the movable spring 31 in the stationary state. In the present embodiment, the stopper member 5 is provided on the left side of the movable spring piece 31, the movable spring piece 31 is inclined to the left, the upper region of the movable spring piece 31 is brought into contact with the damper stopper 51, and the movable spring piece 31 is elastically prestressed to the left in the stationary state. When movable spring 31 is in the release state, its upper region can reduce the range of bumping into damping dog 51 and kick-backing under the effect of stress to the too big emergence of amplitude of oscillation is kick-backed when preventing that the movable spring resets, thereby produces the risk of secondary switch-on after avoiding the contact disconnection.

As shown in fig. 2 to 5, the movable spring 31 includes a second connecting portion 311 for connecting with the movable spring mounting portion 332, a second bending portion 312, and a free end 313 provided with the movable contact 32; the free end 313 is inclined toward the stopper member 5 by the second bent portion 312, and an upper region of the free end 313 is in contact engagement with the vibration reduction stopper 51. In the present embodiment, the second bent portion 312 is provided, so that the free end 313 is inclined to the left, and the free end 313 comes into contact with the vibration damping stopper 51 and has a stress to the left. The technical measure has the technical advantages of simple structure, simple manufacture and low manufacture cost.

As shown in fig. 2 to 5, the first connecting portion 52 of the stopper member 5 is provided with a first bent portion 53, and the first connecting portion 52 is inclined toward the movable spring 31 by the first bent portion 53. In actual use, the technical measure is adopted, the stop block component 5 is inclined rightwards, the distance between the damping stop block 51 and the upper area of the movable spring piece 31 is reduced, the rebound amplitude of the damping stop block 51 is further reduced, the rebound caused by overlarge swing amplitude when the movable spring is reset is prevented, and the risk of secondary connection after the contact is disconnected is avoided.

The utility model discloses a theory of operation:

when the magnetic circuit part works, the magnetic circuit part drives the pushing card 2 to push the movable spring component 3, the movable contact 32 moves towards the normally open fixed contact, and the movable contact 32 and the normally open fixed contact are closed.

When the switch is closed, when the exciting current is reduced to a certain value, the counter torque of the movable spring component 3 is larger than the electromagnetic attracting torque, and the movable contact 32 is disconnected with the normally open stationary contact. The upper end surface of the movable spring piece 31 above the pushing point is abutted against the vibration reduction stop block 51 on the upper part of the movable spring piece 31, so that the elastic potential energy of the movable spring piece 31 is absorbed, and the amplitude of the movable spring piece 31 is reduced, thereby solving the problem that the movable spring piece 31 can generate large reciprocating vibration along with the release of the elastic potential energy, and ensuring the product stability and the service life.

The technical solutions of the above embodiments are only used for illustrating the present invention, and not for limiting the same. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that: the technical scheme can be modified, or part of technical characteristics can be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its specific aspects.

Claims (7)

1. A push rod type relay for reducing the release amplitude of a movable spring comprises a movable spring component and a static spring component, wherein the bottom of the movable spring component is assembled on a base; the movable reed middle part pushes the card through the straight-bar structure and is connected with the armature of the magnetic circuit part, and the movable reed is characterized in that: the push rod type relay further comprises a stop block component assembled on the base, wherein the stop block component comprises a vibration reduction stop block used for reducing the swing amplitude of the movable spring in the elastic potential energy release process, and the vibration reduction stop block corresponds to the upper area of the movable spring.

2. The push-rod relay of claim 1, wherein the push-rod relay is configured to reduce the release amplitude of the movable spring, and wherein: the stop block component and the movable spring leading-out sheet are integrally formed.

3. The push-rod relay of claim 2, wherein the push-rod relay is configured to reduce the release amplitude of the movable spring, and wherein: the movable spring leading-out piece comprises a movable spring piece leading-out pin and a movable spring piece mounting part connected with the movable spring piece leading-out pin, the movable spring piece is fixedly mounted on one side of the movable spring piece, and a stop block part extends upwards from the movable spring piece mounting part.

4. The push-rod relay according to claim 1 or 2, wherein: the block part is L-shaped.

5. The push-rod relay according to claim 1 or 2, wherein: the movable reed is obliquely arranged relative to the stop block component, when the relay is reset, an included angle larger than 0 is formed between the movable reed and the stop block component, and the vibration reduction stop block is in contact fit with the movable reed in a static state.

6. The push-rod relay of claim 5, wherein the push-rod relay is configured to reduce the release amplitude of the movable spring, and wherein: the movable spring comprises a second connecting part, a second bending part and a free end, wherein the second connecting part is used for being connected with the movable spring mounting part; the free end inclines towards the stop block component through the second bending part, and the upper area of the free end is in contact fit with the vibration reduction stop block.

7. The push-rod relay of claim 5, wherein the push-rod relay is configured to reduce the release amplitude of the movable spring, and wherein: the stop block component comprises a first connecting part provided with a first bending part, and the first connecting part is inclined towards the movable spring leaf through the first bending part.

Images