CN210722899U - Electromagnetic relay with strong shock and vibration resistance - Google Patents
Electromagnetic relay with strong shock and vibration resistance Download PDFInfo
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- CN210722899U CN210722899U CN201921958273.1U CN201921958273U CN210722899U CN 210722899 U CN210722899 U CN 210722899U CN 201921958273 U CN201921958273 U CN 201921958273U CN 210722899 U CN210722899 U CN 210722899U
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Abstract
The utility model discloses an electromagnetic relay with strong shock and vibration resistance, which comprises a base, a contact system and a magnetic circuit system, wherein the contact system and the magnetic circuit system are arranged on the base, the contact system comprises a normally open movable spring with a movable contact, a normally closed movable spring with a movable contact, a normally open static spring with a static contact, a normally closed static spring with a static contact and a pushing card, the normally open movable spring is matched with the normally open static spring, the normally closed movable spring is matched with the normally closed static spring, the normally open movable spring and the normally closed movable spring are connected with an armature of the magnetic circuit system through the pushing card, and the movable contact of the normally open movable spring is deviated from the movable contact of the normally closed movable spring; the pushing clamp has a first idle stroke relative to the normally open movable spring, and the pushing clamp has a second idle stroke relative to the normally closed movable spring, and the first idle stroke is smaller than the second idle stroke. The utility model discloses can produce the anti-vibration ability that warp with the help of the less clearance of the end of opening normally and normally open movable spring and promote the end of closing normally.
Description
Technical Field
The utility model relates to an electromagnetic relay especially relates to an electromagnetic relay that shock resistance vibration ability is strong.
Background
After an electromagnetic relay, especially a push-card electromagnetic relay, is excited by a magnetic circuit system, an armature moves towards a clapper pole face under the action of electromagnetic attraction, and meanwhile, a movable reed is driven to move by pushing a card, so that the on-off of a circuit is realized. The push card needs to be provided with a certain amount of idle stroke relative to the movable spring to ensure the contact clearance. For a relay with a multi-group contact structure, in order to ensure reliable operation of the relay, the normally closed end contact is generally required to have a smaller static pressure than the normally open end breaking force, so that the normally closed end contact group has a weaker shock and vibration resistance.
The shaking-off of the contact system is a main failure mode of the electromagnetic relay under the condition of a vibration environment, the normally closed end contact is mainly used for signal monitoring, and when the relay is vibrated to cause the shaking-off of the contact, a product can work abnormally, unstably, fail or even fail to work. Therefore, the capacity of the electromagnetic relay for resisting the mechanical environment is improved, and the practical value is very high.
Generally, in order to improve the anti-vibration capability of a normally closed contact end in the prior art, the normally closed contact end is often improved by thickening a movable contact spring and increasing the static pressure of the movable contact spring, but the power consumption of a coil of the relay needs to be increased, so that the production cost of the whole relay is increased, and the market competitiveness of a product is reduced.
The existing electromagnetic relay is influenced by the requirements of product volume and coil power consumption, the strength of a movable spring is weak, the weight of an armature is difficult to effectively reduce, and the main reason that the impact and vibration resistance of a normally closed end contact is weak is that the contact is shaken off due to the fact that a push card can impact the movable spring when the relay is vibrated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the technical problem that prior art exists, provide an electromagnetic relay that shock-resistant vibration ability is strong for solve the weak problem of normally closed end shock resistance.
The utility model provides a technical scheme that its technical problem adopted is: an electromagnetic relay with strong shock and vibration resistance comprises a base, a contact system and a magnetic circuit system, wherein the contact system and the magnetic circuit system are arranged on the base, the contact system comprises a normally open movable spring with a movable contact, a normally closed movable spring with a movable contact, a normally open static spring with a static contact, a normally closed static spring with a static contact and a pushing clamp, the normally open movable spring is matched with the normally open static spring, the normally closed movable spring is matched with the normally closed static spring, the normally open movable spring and the normally closed movable spring are connected with an armature of the magnetic circuit system through the pushing clamp, and the movable contact of the normally open movable spring is deviated from the movable contact of the normally closed movable spring; the pushing clamp has a first idle stroke relative to the normally open movable spring, and the pushing clamp has a second idle stroke relative to the normally closed movable spring, and the first idle stroke is smaller than the second idle stroke.
Furthermore, the normally open movable spring and the normally closed movable spring are respectively provided with a groove, and the groove is provided with a first groove wall close to the movable contact and a second groove wall far away from the movable contact; the pushing clamp is provided with a first boss and a second boss which are distributed along the moving direction of the pushing clamp, the first boss is positioned in the groove of the normally open spring, and a gap between the first boss and the first groove wall of the groove forms the first idle stroke; the second boss is located in the groove of the normally closed movable spring, and a gap between the second boss and a second groove wall of the groove forms a second idle stroke.
Further, the normally open movable spring and the normally closed movable spring respectively comprise a spring body, one side of the head of the spring body is provided with the movable contact, the other side of the head of the spring body is provided with an extension piece, and the extension piece and the head of the spring body enclose to form the groove; the port of the groove faces downwards.
Further, the extension piece is of an inverted L shape, and the extension piece and the reed body are integrally formed.
Furthermore, a movable spring leading-out sheet is fixed at the tail part of the reed body.
Furthermore, the number of the first bosses matched with the grooves of the normally open spring is two, and the two first bosses are distributed along the direction of the push card and are oppositely arranged; the number of the second bosses matched with the grooves of the normally closed movable spring is two, and the two second bosses are distributed along the direction of the pushing clamp and are oppositely arranged.
Furthermore, the pushing card and the base are matched with a limiting structure to limit the moving stroke of the pushing card.
Furthermore, limit structure includes the spacing groove that sets up on the base with the spacing boss that sets up on the propelling movement card, spacing boss sliding fit is in the spacing inslot.
Furthermore, the number of the normally open movable springs, the number of the normally closed movable springs, the number of the normally open static springs and the number of the normally closed static springs are at least two respectively, the at least two normally open movable springs are arranged in parallel along the width direction of the base, and the at least two normally closed movable springs are arranged in parallel along the width direction of the base; the normally open static springs correspond to the normally open dynamic springs one by one, and the normally closed static springs correspond to the normally closed dynamic springs one by one.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. because the first idle stroke of the pushing clamp relative to the normally open spring is smaller than the second idle stroke of the pushing clamp relative to the normally closed spring, when the relay shakes, the pushing clamp can firstly impact the normally open spring, and after the normally open spring generates a certain deformation amount, the pushing clamp can only contact the normally closed spring, so that the anti-vibration capability of the normally closed end can be improved by means of the small gap of the normally open end and the deformation force generated by the normally open spring.
2. The groove, the first boss and the second boss are used for realizing the first idle stroke and the second idle stroke, and the groove, the first boss and the second boss have the advantages of being simple in structure, convenient to assemble and the like.
3. The normally open movable spring and the normally closed movable spring respectively comprise the reed body and the extension piece, and the reed is very simple in structure and convenient and fast to assemble.
4. The promotion card has also restricted the stroke of rocking that promotes the card with base cooperation limit structure, can restrict the removal stroke that promotes the card to further improved the utility model discloses a shock-resistant vibration ability.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the electromagnetic relay of the present invention with high impact and vibration resistance is not limited to the embodiment.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
fig. 2 is a schematic structural view of the normally open spring of the present invention;
fig. 3 is a schematic structural diagram of the normally closed movable spring of the present invention;
fig. 4 is a top view of the push card of the present invention;
fig. 5 is an assembly schematic diagram of the normally open movable spring and the normally closed movable spring of the present invention;
fig. 6 is a top view of the present invention;
FIG. 7 is a sectional view A-A of FIG. 6;
FIG. 8 is an enlarged schematic view of portion D of FIG. 7;
FIG. 9 is an enlarged schematic view of section E of FIG. 7;
FIG. 10 is a cross-sectional view B-B of FIG. 6;
fig. 11 is an enlarged schematic view of a portion C in fig. 10.
Detailed Description
In an embodiment, please refer to fig. 1-11, the electromagnetic relay with strong shock and vibration resistance of the present invention includes a base 1, and a contact system and a magnetic circuit system disposed on the base 1, wherein the contact system includes a normally open spring 2 having a moving contact 22, a normally closed spring 4 having a moving contact 42, a normally open stationary spring 3 having a stationary contact 31, a normally closed stationary spring 5 having a stationary contact 51, and a pushing clip 7, the normally open spring 2 is engaged with the normally open stationary spring 3, the normally closed spring 4 is engaged with the normally closed stationary spring 5, the normally open spring 2 and the normally closed stationary spring 4 are connected with an armature 6 of the magnetic circuit system through the pushing clip 7, and the moving contact of the normally open spring 2 is deviated from the moving contact of the normally closed spring 4; the push clip 7 has a first idle stroke 8 relative to the normally open movable spring 2, the push clip 7 has a second idle stroke 9 relative to the normally closed movable spring 4, and the first idle stroke 8 is smaller than the second idle stroke 9.
In this embodiment, the normally open spring 2 is provided with a downwardly-ported groove 24, and the groove 24 has a first groove wall 241 close to the movable contact 22 and a second groove wall 242 far from the movable contact 22. The normally closed moving spring 4 is also provided with a downwardly facing recess 44, the recess 44 having a first groove wall 241 proximal to the moving contact 42 and a second groove wall 442 distal to the moving contact 42. The push card 7 is provided with a first boss 71 and a second boss 72 distributed along the moving direction of the push card, the first boss 71 is located in the groove 24 of the normally open spring 2, and a gap between the first boss 71 and the first groove wall 241 of the groove forms the first idle stroke 8, as shown in fig. 8. The second projection 72 is located in the groove 44 of the normally closed movable spring 4, and the clearance between the second projection 72 and the second groove wall 442 of the groove 44 constitutes the second idle stroke 9, as shown in fig. 9.
As shown in fig. 2, the normally open spring 2 specifically includes a spring body 21, the movable contact 22 is disposed on one side of the head of the spring body 21, and an extension piece 23 is disposed on the other side of the head of the spring body 21, and the extension piece 23 and the head of the spring body 21 enclose the groove 24. Specifically, the extension piece 23 is in an inverted L shape and is integrally formed with the reed body 21. The movable spring leading-out piece 25 is fixed at the tail part of the reed body 21. As shown in fig. 3, the normally closed movable spring 4 includes a spring body 41, the movable contact 42 is disposed on one side of the head of the spring body 41, and the extension piece 43 is disposed on the other side of the head of the spring body 41, and the extension piece 43 and the head of the spring body 41 enclose the groove 44. The extension piece 43 is in an inverted L shape, and the extension piece 43 is integrally formed with the reed body 41. A movable spring lead-out piece 45 is fixed at the tail part of the reed body 41.
In this embodiment, the pushing card 7 and the base 1 are matched with a limiting structure to limit the moving stroke of the pushing card 7. Specifically, the limiting structure includes a limiting groove 11 formed in the base 1 and a limiting boss 73 formed in the push card 7, and the limiting boss 73 is slidably fitted in the limiting groove 11, as shown in fig. 10 and 11.
In this embodiment, the number of the normally open movable springs 2, the normally closed movable springs 4, the normally open stationary springs 3, and the normally closed stationary springs 5 is two, the two normally open movable springs 2 are arranged in parallel along the width direction of the base 1, and the two normally closed movable springs 4 are arranged in parallel along the width direction of the base 1; the normally open static springs 3 correspond to the normally open dynamic springs 2 one by one, and the normally closed static springs 5 correspond to the normally closed dynamic springs 4 one by one. The normally closed movable spring 4 is positioned between the normally open movable spring 2 and the magnetic circuit system. The number of the first bosses 71 engaged with the grooves 24 of each normally open spring 2 is two, and the two first bosses 71 are distributed in the width direction of the push card 7 and are arranged oppositely. The number of the second bosses 72 engaged with the grooves 44 of each normally closed movable spring 4 is two, and the two second bosses 72 are distributed in the width direction of the push card 7 and are arranged oppositely.
The utility model discloses an electromagnetic relay that shock resistance vibration ability is strong, when appearing rocking, because the first idle stroke 8 of the relative normally open spring of propelling movement card 7 is less than the second idle stroke 9 of the relative normally closed spring 4 of propelling movement card 7, make propelling movement card 7 can strike normally open spring 2 earlier, normally open spring 2 produces certain deflection (this deflection can not make normally open end mistake switch-on) back, the propelling movement card 7 just can contact normally closed spring 4, thereby can promote the anti-vibration ability of normally closed end with the help of the less clearance of normally open end and the power that normally open spring 2 produced the deformation. In addition, the spacing groove 11 of base 1 can restrict the stroke of rocking of propelling movement card 7 to further improve the utility model discloses a shock-resistant vibration ability.
The above embodiments are only used to further illustrate the electromagnetic relay with strong shock and vibration resistance of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made by the technical entity of the present invention to the above embodiments all fall into the protection scope of the technical solution of the present invention.
Claims (9)
1. An electromagnetic relay with strong shock and vibration resistance comprises a base, a contact system and a magnetic circuit system, wherein the contact system and the magnetic circuit system are arranged on the base, the contact system comprises a normally open movable spring with a movable contact, a normally closed movable spring with a movable contact, a normally open static spring with a static contact, a normally closed static spring with a static contact and a pushing clamp, the normally open movable spring is matched with the normally open static spring, the normally closed movable spring is matched with the normally closed static spring, the normally open movable spring and the normally closed movable spring are connected with an armature of the magnetic circuit system through the pushing clamp, and the movable contact of the normally open movable spring is deviated from the movable contact of the normally closed movable spring; the relative normally open movable spring of promotion card has first idle stroke, and the relative normally closed movable spring of promotion card has second idle stroke, its characterized in that: the first idle stroke is smaller than the second idle stroke.
2. An electromagnetic relay according to claim 1, characterized in that: the normally open movable spring and the normally closed movable spring are respectively provided with a groove, and the groove is provided with a first groove wall close to the movable contact and a second groove wall far away from the movable contact; the pushing clamp is provided with a first boss and a second boss which are distributed along the moving direction of the pushing clamp, the first boss is positioned in the groove of the normally open spring, and a gap between the first boss and the first groove wall of the groove forms the first idle stroke; the second boss is located in the groove of the normally closed movable spring, and a gap between the second boss and a second groove wall of the groove forms a second idle stroke.
3. An electromagnetic relay according to claim 2, characterized in that: the normally open movable spring and the normally closed movable spring respectively comprise a reed body, one side of the head of the reed body is provided with the movable contact, the other side of the head of the reed body is provided with an extension piece, and the extension piece and the head of the reed body enclose a groove; the port of the groove faces downwards.
4. An electromagnetic relay according to claim 3, characterized in that: the extension piece is of an inverted L shape, and the extension piece and the reed body are integrally formed.
5. An electromagnetic relay according to claim 3, characterized in that: and a movable spring leading-out sheet is fixed at the tail part of the reed body.
6. An electromagnetic relay according to claim 2, characterized in that: the number of the first bosses matched with the grooves of the normally open spring is two, and the two first bosses are distributed along the direction of the push card and are oppositely arranged; the number of the second bosses matched with the grooves of the normally closed movable spring is two, and the two second bosses are distributed along the direction of the pushing clamp and are oppositely arranged.
7. An electromagnetic relay according to claim 1, characterized in that: the pushing card and the base are matched with a limiting structure to limit the moving stroke of the pushing card.
8. An electromagnetic relay according to claim 7, characterized in that: the limiting structure comprises a limiting groove formed in the base and a limiting boss arranged on the pushing clamp, and the limiting boss is in sliding fit in the limiting groove.
9. An electromagnetic relay according to claim 1, characterized in that: the number of the normally open movable springs, the number of the normally closed movable springs, the number of the normally open static springs and the number of the normally closed static springs are at least two respectively, the at least two normally open movable springs are arranged in parallel along the width direction of the base, and the at least two normally closed movable springs are arranged in parallel along the width direction of the base; the normally open static springs correspond to the normally open dynamic springs one by one, and the normally closed static springs correspond to the normally closed dynamic springs one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921958273.1U CN210722899U (en) | 2019-11-13 | 2019-11-13 | Electromagnetic relay with strong shock and vibration resistance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921958273.1U CN210722899U (en) | 2019-11-13 | 2019-11-13 | Electromagnetic relay with strong shock and vibration resistance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210722899U true CN210722899U (en) | 2020-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921958273.1U Active CN210722899U (en) | 2019-11-13 | 2019-11-13 | Electromagnetic relay with strong shock and vibration resistance |
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| Country | Link |
|---|---|
| CN (1) | CN210722899U (en) |
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2019
- 2019-11-13 CN CN201921958273.1U patent/CN210722899U/en active Active
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