CN107833793B - Electromagnetic relay capable of effectively reducing contact bounce - Google Patents
Electromagnetic relay capable of effectively reducing contact bounce Download PDFInfo
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- CN107833793B CN107833793B CN201711121606.0A CN201711121606A CN107833793B CN 107833793 B CN107833793 B CN 107833793B CN 201711121606 A CN201711121606 A CN 201711121606A CN 107833793 B CN107833793 B CN 107833793B
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- static
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- reed
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/02—Bases; Casings; Covers
- H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
- H01H50/041—Details concerning assembly of relays
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H50/00—Details of electromagnetic relays
- H01H50/54—Contact arrangements
- H01H50/56—Contact spring sets
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Elimination Of Static Electricity (AREA)
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Abstract
The invention discloses an electromagnetic relay capable of effectively reducing contact bounce, which comprises a static spring and a base; the static spring comprises a static reed and a static contact, the static reed is arranged on the base, the static reed is provided with a static contact mounting part, and the static contact is fixed on one surface of the static contact mounting part of the static reed; in the static contact mounting part of the static reed, a first inclined part is arranged on the back corresponding to the static contact; and a second inclined part is arranged at a position corresponding to the first inclined part in the base, and when the static spring piece is arranged on the base, the first inclined part of the static spring piece is contacted with the second inclined part of the base. On one hand, the invention can ensure the contact reliability of the static spring and the base, thereby effectively reducing the contact bounce; on the other hand, the generation of flocks in the assembly process can be reduced.
Description
Technical Field
The invention relates to the technical field of relays, in particular to an electromagnetic relay capable of effectively reducing contact bounce.
Background
A relay is an electronic control device having a control system (also called an input loop) and a controlled system (also called an output loop), which is commonly used in automatic control circuits, and which is actually an "automatic switch" that uses a small current to control a large current. Therefore, the circuit plays the roles of automatic regulation, safety protection, circuit conversion and the like.
An electromagnetic relay generally includes a movable spring, a stationary spring, and a base (or a base), where the movable spring and the stationary spring cooperate to contact and separate contacts, and the stationary spring is generally fixed on the base. The existing electromagnetic relay can generate a rebound phenomenon at the moment of contact of a moving contact and a static contact, the contact rebound phenomenon can cause great harm to the contacts, contact abrasion can be aggravated, even the contacts can be bonded, and therefore reliability of the relay is influenced.
Therefore, how to reduce the contact bounce is a technical problem which is urgently needed to be solved by relay manufacturers, the effect of reducing the contact bounce can be achieved to a certain extent by increasing the strength or the thickness of the static spring and reducing the weight of the movable contact, but the national standard has standard requirements on the thickness and the quality of the movable spring and the static spring, so that the effect is only limited to be increased or reduced, and the effect is not obvious. In the electromagnetic relay in the prior art, a regular retaining wall is usually arranged on a base/base on which a static reed is mounted, the retaining wall is arranged at the static reed back to one surface of a static contact, and the static reed is retreated to contact the retaining wall at the moment of contact, so that the energy is released on the base/base, and the frequency of contact rebound is reduced. In the prior art, due to machining errors or deformation of the static spring and the base/base (retaining wall), the two parts are not in contact, so that the problem that contact bounce cannot be reduced is caused. In addition, when the stationary contact is fixed to the lower end surface of the stationary spring, it is difficult for the base/pedestal to achieve a reduction in contact bounce at the upper end surface of the stationary spring corresponding to the installation of the stationary contact.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the electromagnetic relay capable of effectively reducing the contact bounce, and through structural improvement, on one hand, the reliability of the contact between a static spring and a base/pedestal can be ensured, so that the contact bounce is effectively reduced; on the other hand, the generation of flocks in the assembly process can be reduced.
The technical scheme adopted by the invention for solving the technical problems is as follows: an electromagnetic relay capable of effectively reducing contact bounce comprises a static spring and a base; the static spring comprises a static reed and a static contact, the static reed is arranged on the base, the static reed is provided with a static contact mounting part, and the static contact is fixed on one surface of the static contact mounting part of the static reed; in the static contact mounting part of the static reed, a first inclined part is arranged on the back corresponding to the static contact; and a second inclined part is arranged at a position corresponding to the first inclined part in the base, and when the static spring piece is arranged on the base, the first inclined part of the static spring piece is contacted with the second inclined part of the base.
The first inclined part of the static reed is a first inclined surface, the second inclined part of the base is a second inclined surface, and when the static reed is arranged on the base, the first inclined surface of the static reed is in contact with the second inclined surface of the base.
The first inclined part of the static reed is a first spherical surface or a first arc-shaped surface, the second inclined part of the base is a second inclined surface, and when the static reed is arranged on the base, the first spherical surface or the first arc-shaped surface of the static reed is in contact with the second inclined surface of the base.
The first inclined part of the static reed is a first inclined surface, the second inclined part of the base is a second spherical surface or a second arc-shaped surface, and when the static reed is arranged on the base, the first inclined surface of the static reed is in contact with the second spherical surface or the second arc-shaped surface of the base.
The first inclined part of the static reed is a first spherical surface or a first arc-shaped surface, the second inclined part of the base is a second spherical surface or a second arc-shaped surface, and when the static reed is arranged on the base, the first spherical surface or the first arc-shaped surface of the static reed is in contact with the second spherical surface or the second arc-shaped surface of the base.
And the edge of the first inclined plane of the static reed is also provided with a chamfer.
The static contact installation department of static reed sets up along the horizontal direction, and the upper portion of static reed is equipped with the quick-connect terminal, and the lower part of static reed is equipped with the PCB terminal, and the static contact installation department has free tip, and the end of the free end of static contact installation department still outwards extends and is equipped with first lug, first rake is established on first lug.
The static contact is fixed at the lower end of the static contact mounting part; in the base, a second bump is further arranged at a position corresponding to the first inclined part, the second bump is matched on the first bump, and the second inclined part is arranged at the second bump.
Compared with the prior art, the invention has the beneficial effects that:
1. in the invention, the first inclined part is arranged on the back corresponding to the static contact in the static contact mounting part of the static reed; in the base, a second inclined portion is provided at a position corresponding to the first inclined portion, and when the stationary spring is attached to the base, the first inclined portion of the stationary spring is in contact with the second inclined portion of the base. According to the structure, the static spring is in contact with the base through the first inclined part and the second inclined part, the contact between the inclined parts can ensure that two parts can be reliably contacted within a certain tolerance, the two parts are prevented from being not contacted due to the deformation of the parts, the contact reliability of the static spring and the base can be ensured, and therefore contact bounce is effectively reduced.
2. The first inclined part of the static reed is set as the first inclined surface, the second inclined part of the base is set as the second inclined surface, and the contact between the two inclined surfaces can greatly improve the contact reliability.
3. The first inclined part of the static reed is arranged at the tail end of the free end of the static contact mounting part of the static reed, so that the contact position of the static reed and the base is positioned at the outer side of the contact position of the movable contact and the static contact, and the rebound frequency of the contact can be better reduced.
4. The edge of the first inclined plane of the static reed is also provided with the chamfer, so that the generation of burrs when the static reed is arranged on the base can be reduced.
5. The invention adopts the structure that the tail end of the free end of the static contact mounting part is also provided with the first bump in an outward extending way, the base is also provided with the second bump at the position corresponding to the first inclined part, and the inclined surface contact is assembled by taking the second bump on the base as the positioning reference, so that the part size error of the static spring piece can be more allowed.
The invention is further explained in detail with the accompanying drawings and the embodiments; an electromagnetic relay capable of effectively reducing contact bounce according to the present invention is not limited to the embodiments.
Drawings
FIG. 1 is a structural sectional view of the present invention;
FIG. 2 is a schematic perspective view of a stationary spring and a protrusion of a base according to an embodiment of the present invention;
FIG. 3 is a side view of a static spring of the present invention in cooperation with a protrusion of a base;
FIG. 4 is a diagram of the rebound effect of the prior art electromagnetic relay contact instant captured by a high speed camera;
fig. 5 is a diagram of the effect of bounce at the instant of contact of the present invention captured by a high speed camera.
Detailed Description
Examples
Referring to fig. 1 to 3, an electromagnetic relay capable of effectively reducing contact bounce according to the present invention includes a stationary spring 1 and a base 2 (which may also be a base); the static spring 1 comprises a static reed 3 and a static contact 11, the static reed 3 is installed on a base 2, the static reed 3 is provided with a static contact installation part 31, the static contact installation part 31 of the embodiment is arranged in the middle of the static reed 3, the upper part of the static reed 3 is provided with a quick connection terminal 32, the lower part of the static reed 3 is provided with a PCB terminal 33, the static contact installation part 31 is provided with a free end part 311, the static contact 11 is fixed on one surface of the static contact installation part 31 of the static reed 3, and the static contact 11 is fixed on the static reed 3 in a riveting mode, and the other surface of the static contact installation part 31 of the static reed 3 can form a riveting convex part 12 of the static contact 11; a first inclined part 312 is provided on the back surface of stationary contact mounting part 31 of stationary reed 3 corresponding to the stationary contact; the base 2 is provided with a second inclined portion 21 at a position corresponding to the first inclined portion 312, and when the static spring 3 is attached to the base 2, the first inclined portion 312 of the static spring comes into contact with the second inclined portion 21 of the base.
In this embodiment, the first inclined portion 312 of the static spring 3 is a first inclined surface (i.e., an inclined plane), the second inclined portion 21 of the base 2 is a second inclined surface (i.e., an inclined plane), and when the static spring 3 is mounted on the base, the first inclined surface of the static spring contacts with the second inclined surface of the base, that is, the two inclined planes contact with each other.
Of course, the first inclined portion of the static spring plate can be set as a first spherical surface or a first arc-shaped surface, the second inclined portion of the base is still set as a second inclined surface, when the static spring plate is arranged on the base, the first spherical surface or the first arc-shaped surface of the static spring plate is in contact with the second inclined surface of the base, and the structure is that the spherical surface or the arc-shaped surface of the static spring plate is matched with the inclined plane of the base.
Of course, the first inclined portion of the static spring piece can be still set as the first inclined surface, the second inclined portion of the base can be set as the second spherical surface or the second arc-shaped surface, when the static spring piece is arranged on the base, the first inclined surface of the static spring piece is contacted with the second spherical surface or the second arc-shaped surface of the base, and the structure is that the inclined plane of the static spring piece is matched with the spherical surface or the arc-shaped surface of the base.
Certainly, the first inclined portion of the static reed can be set as a first spherical surface or a first arc-shaped surface, the second inclined portion of the base is also set as a second spherical surface or a second arc-shaped surface, when the static reed is installed on the base, the first spherical surface or the first arc-shaped surface of the static reed is in contact with the second spherical surface or the second arc-shaped surface of the base, and the structure is that the spherical surface or the arc-shaped surface of the static reed is matched with the spherical surface or the arc-shaped surface of the base.
In several kinds of above-mentioned schemes, all establish the first inclined part of static reed and the second inclined part of base to the inclined plane can reach best cooperation effect.
In this embodiment, a chamfer 3121 is further provided at an edge of first inclined surface 312 of stationary spring 3.
In this embodiment, fixed contact mounting portion 31 of fixed spring 3 is provided along the horizontal direction, the upper portion of fixed spring is provided with quick connect terminal 32, the lower portion of fixed spring is provided with PCB terminal 33, fixed contact mounting portion 31 has a free end portion, the end of the free end of fixed contact mounting portion still extends outward and is provided with first bump 313, first inclined portion 312 is provided on first bump 313.
In this embodiment, the stationary contact 11 is fixed to the lower end of the stationary contact mounting portion 31; in the base 2, a second bump 22 is further provided at a position corresponding to the first inclined portion, and the second bump 22 is fitted over the first bump 313, and the second inclined portion 21 is provided at the second bump 22.
The invention can reduce the electromagnetic relay that the contact jumps back effectively, have adopted in the stationary contact mounting part 31 of the stationary reed 3, there is the first inclined part 312 on the back corresponding to stationary contact; the base 2 is provided with a second inclined portion 21 at a position corresponding to the first inclined portion, and when the static spring piece 3 is attached to the base 2, the first inclined portion 312 of the static spring piece comes into contact with the second inclined portion 21 of the base. According to the structure, the static reed 3 is in contact with the base 2 through the first inclined part and the second inclined part, the contact between the inclined parts can ensure that two parts can be reliably contacted within a certain tolerance, the two parts are prevented from being not contacted due to the deformation of the parts, and the contact reliability of the static reed and the base can be ensured, so that the contact bounce is effectively reduced, and FIG. 4 is a bounce effect diagram of the contact instant of the electromagnetic relay in the prior art collected by a high-speed camera; fig. 5 is a diagram of the rebound effect of the contact instant of the present invention collected by the high-speed camera, so that it can be seen that the contact rebound can be effectively reduced by adopting the technical scheme of the present invention.
According to the electromagnetic relay capable of effectively reducing contact bounce, the first inclined part of the static reed is set as the first inclined surface, the second inclined part of the base is set as the second inclined surface, and the contact reliability of the two inclined surfaces can be greatly improved. The first inclined part of the static reed is arranged at the tail end of the free end of the static contact mounting part of the static reed, so that the contact position of the static reed and the base is positioned at the outer side of the contact position of the movable contact and the static contact, and the rebound frequency of the contact can be better reduced. The invention adopts the technical scheme that the edge of the first inclined plane of the static reed is also provided with the chamfer, so that the generation of burrs when the static reed is arranged on the base can be reduced. The invention adopts the structure that the tail end of the free end of the static contact mounting part is further provided with a first bump 313 extending outwards, the position corresponding to the first inclined part in the base 2 is further provided with a second bump 22, and the inclined surface contact is assembled by taking the second bump 22 on the base as the positioning reference, so that the part size error of the static spring piece can be more allowed.
The foregoing is considered as illustrative of the preferred embodiments of the invention and is not to be construed as limiting the invention in any way. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the scope of the disclosed embodiments. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (8)
1. An electromagnetic relay capable of effectively reducing contact bounce comprises a static spring and a base; the static spring comprises a static reed and a static contact, the static reed is arranged on the base, the static reed is provided with a static contact mounting part, and the static contact is fixed on one surface of the static contact mounting part of the static reed; the method is characterized in that: in the static contact mounting part of the static reed, a first inclined part is arranged on the back corresponding to the static contact; the base is provided with a second inclined part at a position corresponding to the first inclined part, and when the static spring piece is arranged on the base, the first inclined part of the static spring piece is contacted with the second inclined part of the base; the static contact installation department of static reed sets up along the horizontal direction, and the upper portion of static reed is equipped with the quick-connect terminal, and the lower part of static reed is equipped with the PCB terminal, and the static contact installation department has free tip, and the end of the free end of static contact installation department still outwards extends and is equipped with first lug, first rake is established on first lug.
2. An electromagnetic relay according to claim 1, wherein: the first inclined part of the static reed is a first inclined surface, the second inclined part of the base is a second inclined surface, and when the static reed is arranged on the base, the first inclined surface of the static reed is in contact with the second inclined surface of the base.
3. An electromagnetic relay according to claim 1, wherein: the first inclined part of the static reed is a first spherical surface or a first arc-shaped surface, the second inclined part of the base is a second inclined surface, and when the static reed is arranged on the base, the first spherical surface or the first arc-shaped surface of the static reed is in contact with the second inclined surface of the base.
4. An electromagnetic relay according to claim 1, wherein: the first inclined part of the static reed is a first inclined surface, the second inclined part of the base is a second spherical surface or a second arc-shaped surface, and when the static reed is arranged on the base, the first inclined surface of the static reed is in contact with the second spherical surface or the second arc-shaped surface of the base.
5. An electromagnetic relay according to claim 1, wherein: the first inclined part of the static reed is a first spherical surface or a first arc-shaped surface, the second inclined part of the base is a second spherical surface or a second arc-shaped surface, and when the static reed is arranged on the base, the first spherical surface or the first arc-shaped surface of the static reed is in contact with the second spherical surface or the second arc-shaped surface of the base.
6. An electromagnetic relay according to claim 2 or 4, characterized in that: and the edge of the first inclined plane of the static reed is also provided with a chamfer.
7. An electromagnetic relay according to claim 1, 2, 3, 4 or 5, wherein: the static contact is fixed at the lower end of the static contact mounting part; in the base, a second bump is further arranged at a position corresponding to the first inclined part, the second bump is matched on the first bump, and the second inclined part is arranged at the second bump.
8. An electromagnetic relay according to claim 6, wherein said electromagnetic relay is effective to reduce contact bounce: the static contact is fixed at the lower end of the static contact mounting part; in the base, a second bump is further arranged at a position corresponding to the first inclined part, the second bump is matched on the first bump, and the second inclined part is arranged at the second bump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711121606.0A CN107833793B (en) | 2017-11-14 | 2017-11-14 | Electromagnetic relay capable of effectively reducing contact bounce |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711121606.0A CN107833793B (en) | 2017-11-14 | 2017-11-14 | Electromagnetic relay capable of effectively reducing contact bounce |
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| CN107833793A CN107833793A (en) | 2018-03-23 |
| CN107833793B true CN107833793B (en) | 2020-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711121606.0A Active CN107833793B (en) | 2017-11-14 | 2017-11-14 | Electromagnetic relay capable of effectively reducing contact bounce |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109119294A (en) * | 2018-09-26 | 2019-01-01 | 上海苏慧电气有限公司 | A kind of magnetic latching relay |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0817316A (en) * | 1994-06-30 | 1996-01-19 | Matsushita Electric Works Ltd | Electromagnetic relay |
| JPH11260228A (en) * | 1998-03-09 | 1999-09-24 | Omron Corp | Electromagnetic relay |
| CN201252057Y (en) * | 2008-08-19 | 2009-06-03 | 东莞市三友联众电器有限公司 | Shockproof electromagnetic relay |
| CN202585270U (en) * | 2012-04-09 | 2012-12-05 | 安徽省明光市爱福电子有限公司 | Terminal with quick connecting plug |
| CN202616143U (en) * | 2012-06-21 | 2012-12-19 | 厦门宏发电声股份有限公司 | Combined relay with current mutual inductor |
| CN203288521U (en) * | 2013-06-05 | 2013-11-13 | 乐清市美硕电气有限公司 | Small-size universal relay |
| CN104282500A (en) * | 2014-10-14 | 2015-01-14 | 宁波天波纬业电器有限公司 | Static spring piece for small relay |
| CN104701087A (en) * | 2015-01-14 | 2015-06-10 | 宁波世通电子科技有限公司 | Relay for large current environment |
| CN207489761U (en) * | 2017-11-14 | 2018-06-12 | 厦门宏远达电器有限公司 | The electromagnetic relay of contact bounce can be effectively reduced |
-
2017
- 2017-11-14 CN CN201711121606.0A patent/CN107833793B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0817316A (en) * | 1994-06-30 | 1996-01-19 | Matsushita Electric Works Ltd | Electromagnetic relay |
| JPH11260228A (en) * | 1998-03-09 | 1999-09-24 | Omron Corp | Electromagnetic relay |
| CN201252057Y (en) * | 2008-08-19 | 2009-06-03 | 东莞市三友联众电器有限公司 | Shockproof electromagnetic relay |
| CN202585270U (en) * | 2012-04-09 | 2012-12-05 | 安徽省明光市爱福电子有限公司 | Terminal with quick connecting plug |
| CN202616143U (en) * | 2012-06-21 | 2012-12-19 | 厦门宏发电声股份有限公司 | Combined relay with current mutual inductor |
| CN203288521U (en) * | 2013-06-05 | 2013-11-13 | 乐清市美硕电气有限公司 | Small-size universal relay |
| CN104282500A (en) * | 2014-10-14 | 2015-01-14 | 宁波天波纬业电器有限公司 | Static spring piece for small relay |
| CN104701087A (en) * | 2015-01-14 | 2015-06-10 | 宁波世通电子科技有限公司 | Relay for large current environment |
| CN207489761U (en) * | 2017-11-14 | 2018-06-12 | 厦门宏远达电器有限公司 | The electromagnetic relay of contact bounce can be effectively reduced |
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| CN107833793A (en) | 2018-03-23 |
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