CN110957187A - A moving spring structure and electromagnetic relay for preventing breakage and misconnection - Google Patents
A moving spring structure and electromagnetic relay for preventing breakage and misconnection Download PDFInfo
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- CN110957187A CN110957187A CN201911220168.2A CN201911220168A CN110957187A CN 110957187 A CN110957187 A CN 110957187A CN 201911220168 A CN201911220168 A CN 201911220168A CN 110957187 A CN110957187 A CN 110957187A
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- moving spring
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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
- H01H50/56—Contact spring sets
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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
- H01H50/56—Contact spring sets
- H01H50/58—Driving arrangements structurally associated therewith; Mounting of driving arrangements on armature
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- Electromagnetism (AREA)
- Switch Cases, Indication, And Locking (AREA)
Abstract
本发明公开了一种防断裂误接通的动簧结构及电磁继电器，所述动簧结构用于继电器，包括动簧片，该动簧片头部设置动触点；动簧片头部设有用于挂靠在继电器的推动卡上的L型挂接部，该L型挂接部包括沿动簧片的宽度方向向一侧延伸的第一延伸部，以及由该第一延伸部尾端朝动簧片的其中一面所在的一侧弯折延伸的第二延伸部。本发明的动簧结构应用于继电器时，不仅具有强制导向的作用，还能利用其L型挂接部牢牢挂靠在继电器的推动卡上，因而即使动簧片发生断裂，也不会掉落到继电器的底座中，从而避免与继电器的静簧部分误接通，提高继电器的安全性。
The invention discloses a movable spring structure and an electromagnetic relay capable of preventing breakage and misconnection. The movable spring structure is used for a relay and includes a movable reed, the head of which is provided with a movable contact; the head of the movable reed is provided with a movable contact. There is an L-shaped hook portion for hooking on the push card of the relay, the L-shaped hook portion includes a first extension portion extending to one side along the width direction of the movable reed, and a tail end of the first extension portion faces toward the side. A second extension part is bent and extended from the side where one side of the movable spring is located. When the moving spring structure of the present invention is applied to a relay, it not only has the function of forcibly guiding, but also can be firmly hung on the push card of the relay by its L-shaped hook, so even if the moving spring is broken, it will not fall off. into the base of the relay, so as to avoid mistaken connection with the static spring part of the relay and improve the safety of the relay.
Description
Technical Field
The invention relates to the technical field of relays, in particular to a movable spring structure capable of preventing breakage and mistaken connection and an electromagnetic relay.
Background
The electromagnetic relay is an electric control device, and the basic working principle is that electric energy is converted into magnetic energy and then into mechanical energy, and the mechanical energy is used for connecting and disconnecting a controlled circuit to realize the relay function. In the prior art, a magnetic circuit part of the electromagnetic relay is horizontal and is connected and matched with a movable spring part through a pushing clamp. The pushing clamp is provided with a limiting groove, the movable spring part is clamped in the limiting groove, when the pushing clamp moves forwards, the rear groove wall of the limiting groove of the pushing clamp pushes the movable spring part to move forwards, and when the pushing clamp moves backwards, the front groove arm of the limiting groove of the pushing clamp pushes the movable spring part to move backwards. The relay has the characteristic of forced guiding, and safety can be ensured in case of contact fusion. However, such a relay also has the following disadvantages: once the movable spring part breaks, the movable spring part can incline and fall into the base, and the possibility of mistakenly connecting with the static spring part exists, so that the safety of the relay is influenced.
Disclosure of Invention
The invention aims to provide a movable spring structure capable of preventing breakage and mistaken connection and an electromagnetic relay aiming at the technical problems in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a movable spring structure for preventing from breaking and mistakenly connecting is used for a relay and comprises a movable spring piece, wherein the head of the movable spring piece is provided with a movable contact; the movable contact spring head is provided with an L-shaped hanging part used for hanging on a pushing card of the relay, and the L-shaped hanging part comprises a first extending part extending to one side along the width direction of the movable contact spring and a second extending part extending from the tail end of the first extending part towards one side where one side of the movable contact spring is located in a bending mode.
Furthermore, the number of the L-shaped hanging parts is one, and the second extending parts of the L-shaped hanging parts and the movable contact are positioned on two opposite sides of the movable contact spring.
Furthermore, the number of the L-shaped hanging parts is two, the two L-shaped hanging parts are positioned on the same side of the movable spring plate and distributed up and down, and the second extending parts of the two L-shaped hanging parts are positioned on two opposite sides of the movable spring plate.
Furthermore, the L-shaped hanging part is provided with a through hole which extends from the first extension part to the second extension part.
Furthermore, the tail part of the movable spring leaf is provided with a movable spring leading-out sheet.
The invention also provides an electromagnetic relay, which comprises a base, a magnetic circuit part, a movable spring part and a static spring part, wherein the magnetic circuit part, the movable spring part and the static spring part are arranged on the base; the movable spring leaf of the movable spring part adopts the movable spring leaf of the movable spring structure for preventing the mistaken connection by fracture, the pushing clamp is provided with a pushing arm, a limiting groove with an upward port is arranged on the pushing arm, a first extending part of the L-shaped hanging part of the movable spring part is hung and leaned on the limiting groove of the pushing arm, and a second extending part is matched with the outer side of the pushing arm.
Further, the movable spring part comprises a first movable spring part, the first movable spring part has an overtravel relative to the pushing card, and the limiting groove of the pushing card comprises a first limiting groove correspondingly matched with the first movable spring part; the inner side surface of the pushing arm is provided with a pushing boss, the pushing boss and the movable contact are positioned on two opposite sides of the first movable spring part, in the overtravel stage of the first movable spring part, the force application part of the pushing clamp on the first movable spring part is changed from a first limiting groove into a pushing boss, and the pushing boss is matched with the head of the movable spring piece of the first movable spring part.
Furthermore, the inner side surface of the pushing arm is provided with a baffle plate, the baffle plate and the movable contact are positioned at two opposite sides of the first movable spring part, and the pushing boss is arranged at one side of the baffle plate close to the first movable spring part; and/or the pushing point of the pushing boss on the head of the movable spring is lower than the pushing point of the first limiting groove on the first extension part.
Furthermore, the movable spring part also comprises a second movable spring part, the second movable spring part has a free stroke relative to the pushing card, the second movable spring part and the first movable spring part are distributed along the pushing direction of the pushing card, and the limiting groove of the pushing card comprises a second limiting groove correspondingly matched with the second movable spring part.
Furthermore, the inner side surface of the pushing arm is provided with a pull-back block, the pull-back block and the movable contact are positioned on the same side of the first movable spring part, and the pull-back block is contacted and leaned against the head of the movable spring of the first movable spring part.
Further, the first movable spring part is normally open, the second movable spring part is normally closed, and the second movable spring part is located between the first movable spring part and the magnetic circuit system; the number of the L-shaped hanging parts of the first movable spring part is one, and the second extending parts of the L-shaped hanging parts and the movable contact are positioned on two opposite sides of the movable spring piece; the number of the L-shaped hanging parts of the second movable spring part is two, the two L-shaped hanging parts are positioned on the same side of the movable spring plate and are distributed up and down, and the second extending parts of the two L-shaped hanging parts are positioned on two opposite sides of the movable spring plate; and/or the number of the first movable spring parts, the number of the second movable spring parts and the number of the pushing arms are respectively two, and the two first movable spring parts, the two second movable spring parts and the two pushing arms are respectively distributed along the width direction of the base and are mirror images of each other; the two first movable spring parts and the two second movable spring parts are respectively matched with the two pushing arms one by one.
Compared with the prior art, the invention has the following beneficial effects:
1. the L-shaped hanging part is arranged at the head of the movable spring piece and used for hanging and leaning against the pushing clamp of the relay, and the L-shaped hanging part comprises a first extending part extending to one side along the width direction of the movable spring piece and a second extending part bending and extending from the tail end of the first extending part to one side of one surface of the movable spring piece, so that when the movable spring structure is applied to the relay, the movable spring structure not only has the function of forced guiding, but also can firmly hang and lean against the pushing clamp of the relay by utilizing the L-shaped hanging part, and the movable spring piece cannot fall into a base of the relay even if the movable spring piece is broken, thereby avoiding the mistaken connection with a static spring part of the relay and improving the safety of the relay. In addition, L type hanging part wholly is located movable reed side, has that processing technology is more simple, characteristics such as the assembly is convenient.
2. The arrangement of the pushing boss enables the force application part of the pushing clamp on the first movable spring part to be changed into the pushing boss from the first limiting groove at the overtravel stage of the first movable spring part, and the pushing boss is matched with the head of the movable spring piece of the first movable spring part, so that the L-shaped hanging part of the first movable spring part can be avoided at the overtravel stage of the first movable spring part, the L-shaped hanging part is prevented from being obviously deformed or broken under the stress, and the safety of the relay is further improved.
3. The setting of baffle can further provide support and spacing to the movable spring leaf when the movable spring leaf fracture, avoids its L type to articulate portion to break away from first string groove. The pushing point of the pushing boss on the head of the movable spring is lower than the pushing point of the first limiting groove on the first extension part, so that the stress point of the movable spring part changes from a high point to a low point in the pushing process of the pushing card, and the first movable spring part can move for a larger distance under the condition that the swing amplitude of the armature of the magnetic circuit part is smaller, and the suction force of a product is improved.
4. The arrangement of the pull-back block can increase the contact area of the push card and the movable spring, so that when contact bonding occurs and the coil of the magnetic circuit part is excited, the push card can effectively pull back the head of the movable spring of the first movable spring part to ensure that the normally closed contact gap required by forced guiding is more than or equal to 0.5mm, and the L-shaped hanging part of the first movable spring part can be avoided, so that the L-shaped hanging part is less deformed.
The invention is further explained in detail with the accompanying drawings and the embodiments; however, the movable spring structure and the electromagnetic relay for preventing the disconnection and the erroneous connection according to the present invention are not limited to the embodiments.
Drawings
Fig. 1 is a schematic structural diagram (embodying a front side) of a dynamic spring structure according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram (reflecting the back) of a dynamic spring structure according to the first embodiment of the invention;
fig. 3 is a schematic structural diagram (embodying a front side) of a dynamic spring structure according to a second embodiment of the present invention;
fig. 4 is a second schematic structural diagram (reflecting the back) of the dynamic spring structure according to the second embodiment of the present invention;
fig. 5 is a schematic structural view of an electromagnetic relay embodying the present invention;
FIG. 6 is a schematic view of the distribution of two first movable spring portions of the present invention;
FIG. 7 is a schematic view of the distribution of two second movable spring portions of the present invention;
FIG. 8 is a schematic diagram of the construction of the push card of the present invention;
FIG. 9 is an enlarged schematic view of portion A of FIG. 8;
fig. 10 is a schematic view of the push card of the present invention engaged with two first and second movable spring portions.
Detailed Description
In a first embodiment, referring to fig. 1 and fig. 2, a movable spring structure for preventing a breaking and a mis-connection according to the present invention is used for a relay, and includes a movable spring 1, a movable contact 2 is disposed at a head of the movable spring 1; the movable spring plate 1 is provided with an L-shaped hanging part 11 for hanging on a pushing card of the relay, and the L-shaped hanging part 11 comprises a first extending part 111 extending to one side (the one side can be any side of the width direction of the movable spring plate 1, and is determined according to actual needs) along the width direction of the movable spring plate 1, and a second extending part 112 extending from the tail end of the first extending part 111 towards one side where one surface of the movable spring plate 1 is located.
In this embodiment, the number of the L-shaped hooking portions 11 is one, and the second extending portion 112 of the L-shaped hooking portion 11 and the movable contact 2 are located at two opposite sides of the movable contact spring 1. The L-shaped hanging portion 11 is provided with a through hole 113, and the through hole 113 extends from the first extending portion 111 to the second extending portion 112. The through hole 113 is provided to facilitate the bending and forming of the second extending portion 112 of the L-shaped hanging portion 11.
In this embodiment, the movable spring lead-out piece 3 is provided at the tail of the movable spring plate 1, and specifically, the movable spring lead-out piece 3 is riveted to the tail of the movable spring plate 1, but not limited thereto.
When the movable spring structure for preventing breakage and mistaken connection is applied to a relay, the L-shaped hanging part 11 is hung on the limiting groove on the pushing arm of the pushing card, specifically, the first extending part 111 of the L-shaped hanging part 11 is hung on the limiting groove of the pushing arm, and the second extending part 112 is matched on the outer side of the pushing arm. Thus, when the movable spring plate 1 is broken, the movable spring plate 1 can be firmly hung on the push card through the L-shaped hanging part 11, so that the possibility that the movable spring plate falls into the base of the relay and is mistakenly connected with the static spring part is avoided.
Example two
Referring to fig. 3 and fig. 4, a moving spring structure for preventing a breaking and a false connection according to the present invention is different from the first embodiment in that: the number of the L-shaped hanging parts 11 is two, the two L-shaped hanging parts 11 are located on the same side of the movable spring plate 1 and are distributed vertically, and the second extending parts 112 of the two L-shaped hanging parts 11 are located on two opposite sides of the movable spring plate 1.
Referring to fig. 5-10, an electromagnetic relay according to the present invention includes a base 10, and a magnetic circuit portion 20, a movable spring portion, and a stationary spring portion disposed on the base 10, wherein the magnetic circuit portion 20 is connected to and engaged with the movable spring portion through a push clip 30, and the movable spring portion is correspondingly engaged with the stationary spring portion. The movable spring part adopts the structure of the movable spring for preventing the breakage and the misconnection as described in the first embodiment or the second embodiment, the pushing clip 30 is provided with the pushing arm 31, the pushing arm 31 is provided with a limiting groove with an upward port, the first extending part 111 of the L-shaped hanging part 11 of the movable spring part is hung on the limiting groove of the pushing arm 31, and the second extending part 112 is matched on the outer side of the pushing arm 31.
In this embodiment, the movable spring portion includes a first movable spring portion 40, the first movable spring portion 40 has an over-stroke relative to the push card 30, and the limit groove of the push card 30 includes a first limit groove 311 correspondingly engaged with the first movable spring portion 40; the inner side surface of the pushing arm 31 is provided with a pushing boss 312, the pushing boss 312 and the movable contact 2 are positioned at two opposite sides of the first movable spring part 40, in the overtravel stage of the first movable spring part 40, the force application part of the pushing card 30 to the first movable spring part 40 is changed from a first limiting groove 311 into the pushing boss 312, and the pushing boss 312 is matched with the head of the movable spring piece 1 of the first movable spring part 40.
In this embodiment, the inner side surface of the pushing arm 31 is provided with a baffle 313, the baffle 313 and the movable contact 2 are positioned at two opposite sides of the first movable spring part 40, and the pushing boss 312 is arranged at one side of the baffle 313 close to the first movable spring part 40. The pushing point of the pushing boss 312 on the head of the movable spring 1 is lower than the pushing point of the first limiting groove 311 on the first extension part 111.
In this embodiment, the movable spring portion further includes a second movable spring portion 50, the second movable spring portion 50 has an idle stroke relative to the push card 30, the second movable spring portion 50 and the first movable spring portion 40 are distributed along the pushing direction of the push card 30, and the limiting groove of the push card 30 includes a second limiting groove 315 correspondingly engaged with the second movable spring portion 50. The first movable spring portion 40 is normally open, the second movable spring portion 50 is normally closed, and the second movable spring portion 50 is located between the first movable spring portion 40 and the magnetic circuit system. Similarly, the static spring portion includes a first static spring portion 60 correspondingly engaged with the first movable spring portion 40, and a second static spring portion 70 correspondingly engaged with the second movable spring portion 50.
In this embodiment, the inner side surface of the pushing arm 31 is provided with a pull-back block 314, the pull-back block 314 and the movable contact 2 are located on the same side of the first movable spring part 40, and the pull-back block 314 contacts and abuts against the head of the movable spring piece 1 of the first movable spring part 40.
In this embodiment, the number of the L-shaped hanging parts 11 of the first movable spring part 40 is one, and the second extending part 112 of the L-shaped hanging part 11 and the movable contact 2 are located at two opposite sides of the movable spring piece 1, that is, the first movable spring part 40 adopts the movable spring structure for preventing the accidental connection due to breakage as described in the first embodiment. The number of the L-shaped hanging parts 11 of the second movable spring part 50 is two, the two L-shaped hanging parts 11 are located on the same side of the movable spring plate 1 and are distributed vertically, and the second extending parts 112 of the two L-shaped hanging parts 11 are located on two opposite sides of the movable spring plate 1. That is, the second movable spring portion 50 adopts the structure of the movable spring for preventing the breakage and the erroneous connection described in the second embodiment.
In this embodiment, the number of the first movable spring portions 40, the number of the second movable spring portions 50, the number of the pushing arms 31, the number of the first stationary spring portions 60, and the number of the second stationary spring portions 70 are two, and the two first movable spring portions 40, the two second movable spring portions 50, the two pushing arms 31, the two first stationary spring portions 60, and the two second stationary spring portions 70 are distributed along the width direction of the base 10 and are mirror images of each other; the two first movable spring portions 40 and the two second movable spring portions 50 are respectively fitted to the two push arms 31 one by one.
In this embodiment, the outer side surface of the push arm 31 is provided with a first support boss 316 at a position close to the first limit groove 311 for supporting the second extension portion 112 of the first movable spring portion 40. Two second supporting bosses 317 are disposed on the outer side surface of the push arm 31 near the second limiting groove 315, and the two second supporting bosses 317 are distributed along the pushing direction of the push card 30 and are disposed in a high-low manner, and are respectively used for supporting the two second extending portions 112 of the second movable spring portion 50.
In the electromagnetic relay, the L-shaped hanging parts 11 of the two first movable spring parts 40 are in one-to-one hanging fit with the first limit grooves 311 of the two push arms 31 of the push card 30, and the L-shaped hanging parts 11 of the two second movable spring parts 50 are in one-to-one hanging fit with the second limit grooves 315 of the two push arms 31 of the push card 30, so that the function of forced guiding is realized, and the function of preventing the movable spring pieces 1 of the first movable spring parts 40 and the second movable spring parts 50 from being mistakenly connected due to breakage of uncertain factors is also realized. That is, when the movable contact spring 1 is broken, the movable contact spring 1 can be reliably caught by the push-up clip 30, and thus, the movable contact spring does not move in the relay interior and is not erroneously turned on. The contact area between the pull-back block 314 at the head of the push card 30 and the movable spring plate 1 is increased, so that when the movable contact (here, a normally open contact) of the first movable spring part 40 is bonded, and the coil of the magnetic circuit part is de-energized, the push card 30 can effectively pull back the head of the movable spring plate 1 to ensure that the normally closed contact gap (i.e., the gap between the movable contact of the second movable spring part 50 and the corresponding stationary contact) required by forced guiding is not less than 0.5mm, and can avoid the L-shaped hanging part 11 of the first movable spring part 40, so that the L-shaped hanging part 11 deforms less.
In operation, the pushing card 30 is acted by the magnetic circuit portion 20, and a groove wall of the first limiting groove 311 pushes the first extension portion 111 of the first movable spring portion 40, so as to drive the first movable spring portion 40 to move toward the first stationary spring portion 60, and a groove wall of the second limiting groove 315 of the pushing card 30 pushes the first extension portion 111 of the second movable spring portion 50, so as to drive the second movable spring portion 50 to move away from the second stationary spring portion 70. In the overtravel stage of the first movable spring part 40, the force application part of the pushing clamp 30 to the first movable spring part 40 is changed from the first limiting groove 311 to the pushing boss 312, that is, in the overtravel stage of the first movable spring part 40, the pushing boss 312 pushes the head of the movable spring piece 1 of the first movable spring part 40, so that the movable spring piece 1 is deformed, and the overtravel is realized. In the process, the L-shaped hanging part 11 of the first movable spring part 40 is not acted by the pushing card 30, and the L-shaped hanging part 11 is prevented from being stressed to be deformed or broken minutely. In the over-stroke stage of the first movable spring portion 40, the force bearing point of the first movable spring portion 40 changes from the high point to the low point, so that the first movable spring portion 40 can be displaced by a larger distance under the condition that the swing amplitude of the armature of the magnetic circuit portion 20 is smaller, and the suction force of the product is improved.
In another embodiment, the movable spring portion of the electromagnetic relay according to the present invention includes only a normally closed movable spring portion or a normally open movable spring portion, and the movable spring portion adopts the movable spring structure for preventing the mis-connection due to breakage according to the present invention described in the first embodiment or the second embodiment.
The above embodiments are only used to further illustrate the breaking-proof and mis-connecting-proof moving spring structure and the electromagnetic relay of the present invention, but the present invention is not limited to the embodiments, and any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention fall within the protection scope of the technical solution of the present invention.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220168.2A CN110957187A (en) | 2019-12-03 | 2019-12-03 | A moving spring structure and electromagnetic relay for preventing breakage and misconnection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911220168.2A CN110957187A (en) | 2019-12-03 | 2019-12-03 | A moving spring structure and electromagnetic relay for preventing breakage and misconnection |
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| Publication Number | Publication Date |
|---|---|
| CN110957187A true CN110957187A (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911220168.2A Pending CN110957187A (en) | 2019-12-03 | 2019-12-03 | A moving spring structure and electromagnetic relay for preventing breakage and misconnection |
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| CN (1) | CN110957187A (en) |
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| JP2015035403A (en) * | 2013-08-09 | 2015-02-19 | オムロン株式会社 | Contact point mechanism and electromagnetic relay using the same |
| US20160027602A1 (en) * | 2014-07-28 | 2016-01-28 | Fujitsu Component Limited | Electromagnetic relay |
| CN108321032A (en) * | 2018-03-13 | 2018-07-24 | 厦门宏发电声股份有限公司 | A kind of movable contact spring and its safety relay for safety relay |
| CN209183472U (en) * | 2018-12-19 | 2019-07-30 | 申乐股份有限公司 | A kind of movable contact spring component and relay |
| CN211507527U (en) * | 2019-12-03 | 2020-09-15 | 漳州宏发电声有限公司 | Movable spring structure capable of preventing mistaken connection due to fracture and electromagnetic relay |
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2019
- 2019-12-03 CN CN201911220168.2A patent/CN110957187A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1360324A (en) * | 2002-02-01 | 2002-07-24 | 厦门宏发电声有限公司 | Electromagnetic relay with well flexible moving reed |
| CN201570456U (en) * | 2009-12-17 | 2010-09-01 | 厦门宏发电声股份有限公司 | Novel magnetic latching relay for two sets of contact sets |
| CN201655686U (en) * | 2010-03-12 | 2010-11-24 | 厦门宏发电声股份有限公司 | Electromagnetic relay capable of improving magnetic efficiency and reducing foreign material pollution |
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