CN214378261U - Direct current relay capable of improving contact stability of contact - Google Patents
Direct current relay capable of improving contact stability of contact Download PDFInfo
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- CN214378261U CN214378261U CN202022987955.4U CN202022987955U CN214378261U CN 214378261 U CN214378261 U CN 214378261U CN 202022987955 U CN202022987955 U CN 202022987955U CN 214378261 U CN214378261 U CN 214378261U
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Abstract
The utility model discloses a direct current relay capable of improving contact stability of contacts, which comprises two stationary contact leading-out ends, a straight movable reed and a pushing rod component; the middle of the movable spring plate is assembled in the pushing rod component through a spring; in the push rod component, under the bottom corresponding to the spring position, still extend respectively to both sides limit and be equipped with the lamination formula and support the shell fragment, the terminal bottom surface to the both ends of movable contact spring is supported to the lamination formula to utilize two lamination formula to support the shell fragments and provide support and contact pressure to the both ends of movable contact spring respectively, thereby improve the stability of contact. The utility model discloses can reduce the release rebound, prevent the unilateral bullet of movable contact spring from opening to effectively improve the stability of contact.
Description
Technical Field
The utility model relates to a relay technical field especially relates to a can improve direct current relay of contact stability.
Background
A dc relay in the prior art, which adopts a direct-acting magnetic circuit structure, fig. 1 is a schematic view of a partial structure of a dc relay in the prior art, fig. 2 is a schematic view of an exploded partial structure of a dc relay in the prior art, as shown in fig. 1 and fig. 2, the dc relay includes two stationary contact terminals 101, 102, a movable contact piece 103 in a straight piece type, and a push rod member 104, the two stationary contact terminals (i.e. two load terminals) 101, 102 are respectively mounted on a housing, the bottom ends of the two stationary contact terminals 101, 102 are set as stationary contacts, a current of one stationary contact terminal flows in, a current of the other stationary contact terminal flows out, both ends of the movable contact piece 103 are set as movable contacts, the middle of the movable contact piece 103 is mounted in the push rod member 104 through a spring 105, the push rod member 104 is connected with the direct-acting magnetic circuit, under the action of the direct-acting magnetic circuit, the push rod part 104 drives the movable spring piece to move upwards, so that two ends of the movable spring piece 103 are respectively contacted with the bottom ends of the two stationary contact leading-out ends 101 and 102, and the load is communicated.
With the continuous expansion and extension of the application field of the relay, particularly the application of the relay in the field of new energy automobiles, the requirement on the reliability of products is higher and higher, and correspondingly, higher requirements on the assembly performance and the mechanism stability of the products are also provided. The direct current relay in the prior art adopts the spring to provide contact pressure, and the spring is positioned at the central position of the contact points at two ends as a fulcrum, so that the spring is in a one-to-many relationship with the contact pressure when compressed, and therefore, the sprung movable spring leaf cannot be effectively pressed in the process of contact closing action rebound; on the other hand, when fault short-circuit current occurs, electric repulsion force is generated between the movable contact and the static contact, and the support point of the movable spring is located in the center and is easy to be sprung open on one side due to additional moment, so that the stability of contact between the movable contact and the static contact is influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a can improve direct current relay of contact stability, through structural improvement, can reduce the release rebound, prevent the unilateral bullet of movable contact spring from opening to effectively improve the stability of contact.
The utility model provides a technical scheme that its technical problem adopted is: a direct current relay capable of improving contact stability of contacts comprises two stationary contact leading-out terminals, a straight-piece movable reed and a pushing rod component; the middle of the movable spring is assembled in the pushing rod component through a spring, so that the two ends of the movable spring are respectively contacted with the bottom ends of the two stationary contact leading-out ends under the action of the pushing rod component, and current flows in from one stationary contact leading-out end and flows out from the other stationary contact leading-out end after passing through the movable spring; in the push rod component, under the bottom corresponding to the spring position, still extend respectively to both sides limit and be equipped with the lamination formula and support the shell fragment, the terminal bottom surface to the both ends of movable contact spring is supported to the end that the shell fragment was supported to the lamination formula to utilize two lamination formula to support the shell fragments and provide support and contact pressure to the both ends position of movable contact spring respectively, thereby improve the stability of contact.
U-shaped bends are arranged in the laminated supporting elastic sheets.
The tail end of the laminated supporting elastic sheet is abutted to the bottom surfaces of the contact positions of the two ends of the movable spring sheet and the leading-out ends of the static contacts.
The terminal of two lamination formula support shell fragments is established to the portion of bending, the terminal of two lamination formula support shell fragments supports the bottom surface of drawing forth the end position that contacts with the stationary contact at the both ends of movable contact spring through the portion of bending.
The positions of the tail ends of the two laminated supporting elastic sheets, which are propped against the two ends of the movable spring sheet, correspond to the centers of the contact positions of the two stationary contact leading-out ends and the two ends of the movable spring sheet.
The laminated supporting spring piece is formed by laminating a plurality of spring pieces, and the spring pieces corresponding to the two side edges of the push rod part are connected to the two sides of the plastic part of the push rod part in an injection molding mode.
The corresponding reeds on the two sides of the push rod part extend towards the middle respectively and are integrally connected to form an integral reed, and a first through hole through which a push rod in the push rod part can pass is further formed in the middle of the integral reed.
Further, a yoke iron plate is arranged below the matching position of the movable spring and the two stationary contact leading-out ends; in the push rod component, buffering elastic sheets are respectively extended towards two side edges above the yoke plate and are positioned below the laminated supporting elastic sheets, and the tail ends of the buffering elastic sheets are abutted against the yoke plate when the contacts are released.
The buffering elastic pieces on the two sides of the push rod part are connected to the two sides of the plastic part of the push rod part in an injection molding mode.
The buffering elastic pieces corresponding to the two side edges of the push rod part extend towards the middle respectively and are integrally connected to form an integral buffering elastic piece, and a second through hole through which a push rod in the push rod part can pass is further formed in the middle of the integral buffering elastic piece.
The spring is not installed between the middle of the movable spring plate and the pushing rod component, and the movable spring plate is assembled in the pushing rod component through the laminated supporting elastic sheet.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses owing to adopted in the catch bar part, under the bottom corresponding to spring position, still extend respectively to both sides limit and be equipped with lamination formula support shell fragment, the terminal bottom surface to the both ends of movable contact spring is supported to lamination formula to utilize two lamination formula support shell fragments to provide support and contact pressure respectively to the both ends of movable contact spring, thereby improve the stability of contact. The structure of the utility model utilizes the laminated supporting spring plate to support the two ends of the movable spring plate, the laminated deformation provides contact pressure when the contact is closed, and the contact stability is improved; and a plurality of leaf spring sheets are stacked together, so that the rigidity is smaller compared with a single sheet, the flexibility of the mechanism can be improved, the support sheet is prevented from being broken or mechanically blocked, and the contact with the movable contact sheet is not easy to break.
2. The utility model discloses owing to adopted to be equipped with the U type in the middle of the lamination and bent to and support the end of shell fragment with the lamination formula and support the bottom surface of the both ends of movable contact spring and draw forth the end position of contacting with the stationary contact. The structure of the utility model can coordinate and compensate the deformation between different pieces when the laminated supporting elastic piece is compressed by utilizing the U-shaped bending in the middle of the laminated piece, thereby avoiding local stress concentration; because the contact pressure and the supporting point of the lamination supporting spring plate are positioned on the same straight line, the stress is in one-to-one relation, the action and the release rebound can be reduced, and the single-side spring opening of the movable spring plate is prevented.
3. The utility model discloses owing to adopted in the catch bar part, in the top that corresponds to yoke iron plate, still extend respectively to both sides limit and be equipped with the buffering shell fragment, and cushion the shell fragment and be in the below that the shell fragment was supported to the lamination formula to the end that will cushion the shell fragment when the contact releases supports on yoke iron plate. The utility model discloses a this kind of structure utilizes the buffering shell fragment for promote the pole part during the release and move the subassembly and the soft landing of yoke plate that the spring is constituteed, noise when can reducing the release improves the big shortcoming of current product noise.
4. The utility model discloses owing to adopted and supported the shell fragment with two lamination formulas and replace the spring (cancelled the spring promptly), like this, can reduce part quantity, can reduce the height that the shell fragment was supported to the lamination formula simultaneously, can adjust contact pressure through the rigidity that the shell fragment was supported to the adjustment lamination formula, save relay housing (ceramic cover promptly) high space.
The present invention will be described in further detail with reference to the accompanying drawings and examples; however, the present invention is not limited to the embodiment, and a dc relay capable of improving contact stability of a contact is provided.
Drawings
Fig. 1 is a partial configuration diagram of a dc relay in the prior art;
fig. 2 is an exploded schematic view of a partial configuration of a dc relay of the prior art;
fig. 3 is a partially exploded view of a first embodiment of the present invention;
fig. 4 is a front view of a partial structure (a movable contact and a stationary contact release state) according to a first embodiment of the present invention;
fig. 5 is a front view of a partial structure (a contact state of a movable contact and a stationary contact) according to a first embodiment of the present invention;
fig. 6 is a schematic three-dimensional structure view of the pushing rod member, the laminated supporting spring and the buffering spring according to the first embodiment of the present invention;
fig. 7 is a top view of the pushing rod member of the first embodiment of the present invention, matching with the laminated supporting spring and the buffering spring;
FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;
fig. 9 is a schematic perspective view of a laminated supporting spring according to a first embodiment of the present invention;
fig. 10 is an exploded perspective view of a laminated supporting spring according to a first embodiment of the present invention;
fig. 11 is a schematic perspective view of a buffering elastic sheet according to a first embodiment of the present invention;
fig. 12 is a partially exploded view of the second embodiment of the present invention.
Detailed Description
Example one
Referring to fig. 3 to 11, the dc relay of the present invention capable of improving contact stability of a contact includes two stationary contact terminals 11 and 12, a straight movable contact spring 2 and a push rod member 3; the push rod part 3 comprises a U-shaped support 31, an injection molding body 32, a push rod 33 and a connecting sheet 34, the push rod 33 and the connecting sheet 34 are respectively fixed in the injection molding body 32 in an injection molding mode, and the tail ends of two side arms of a U shape of the U-shaped support 31 are connected with the connecting sheet 34; the middle of the movable spring piece 2 is assembled in the push rod part 3 through a spring 4, specifically, the middle of the movable spring piece 2 is matched in a U-shaped opening of a U-shaped support 31, the bottom end of the spring 4 is abutted on an injection molding body 32, the movable spring piece 2 is abutted on the U-shaped bottom of the U-shaped support 31 by the top end of the spring 4, the U-shaped bottom at the moment is equivalent to a top wall, the movable spring piece 2 is abutted on the inner side of the top wall, so that the two ends (set as movable contacts) of the movable spring piece 2 are respectively contacted with the bottom ends (set as static contacts) of the two static contact leading-out ends 11 and 12 under the action of the push rod part 3, and current flows in from one static contact leading-out end and flows out from the other static contact leading-out end after passing through the movable spring piece; among the catch bar part 3, under the bottom corresponding to spring 4 position, still extend respectively to both sides limit and be equipped with lamination formula support shell fragment 5, and be equipped with the U type in lamination formula support shell fragment 5 and bend 51, the terminal 52 of lamination formula support shell fragment 5 supports to draw forth the bottom surface of end 11, 12 contact position to the stationary contact at the both ends of movable contact spring leaf 2 to utilize two lamination formula support shell fragments 5 to draw forth the end contact position with the stationary contact at the both ends of movable contact spring leaf 2 respectively and provide support and contact pressure, thereby improve the stability of contact.
In this embodiment, the ends 52 of the two laminated supporting spring pieces 5 are provided as bent portions, and the ends of the two laminated supporting spring pieces are abutted to the bottom surfaces of the contact positions with the stationary contact leading-out ends at the two ends of the movable spring piece 2 through the bent portions 52.
In this embodiment, the positions of the ends of the two laminated supporting spring pieces 5, which are abutted against the two ends of the movable spring piece, correspond to the centers of the contact positions of the two stationary contact leading-out ends and the two ends of the movable spring piece.
In this embodiment, the laminated supporting spring 5 is formed by laminating three spring leaves 53, the spring leaves 53 corresponding to the two side edges of the push rod part 3 are connected to the two sides of the plastic part (i.e., the injection molded body 32) of the push rod part 3 in an injection molding manner, the spring leaves 53 corresponding to the two side edges of the push rod part extend towards the middle respectively and are integrally connected to form an integral spring leaf 55, the middle of the integral spring leaf 55 is fixed in the push rod part 3 in an injection molding manner, and particularly, the middle of the integral spring leaf 55 is fixed in the injection molded body 32 of the push rod part 3 in an injection molding manner.
In this embodiment, a first through hole 551 is further provided in the middle of the integral spring 55 for allowing the push rod 33 of the push rod member 3 to pass through.
Further, a yoke iron plate 6 is arranged below the matching position of the movable reed 2 and the two stationary contact leading-out ends 11 and 12; in the push rod part 3, a buffering elastic sheet 7 is respectively extended to two side edges above the corresponding yoke plate 6, the buffering elastic sheet 7 is positioned below the laminated supporting elastic sheet 5, and the tail end 71 of the buffering elastic sheet 7 is abutted against the yoke plate 6 when the contact is released. The tail ends 71 of the two buffer elastic sheets 7 are also provided with bent parts, and the tail ends of the two buffer elastic sheets 7 are abutted against the yoke plate 6 through the bent parts 71.
In this embodiment, the buffering elastic pieces 7 on the two sides of the pushing rod component are connected to the two sides of the plastic part (i.e., the injection molded body 32) of the pushing rod component 3 in an injection molding manner, the buffering elastic pieces corresponding to the two sides of the pushing rod component extend towards the middle respectively and are integrally connected to form an integral buffering elastic piece 73, and the middle of the integral buffering elastic piece 73 is fixed in the pushing rod component 3 in an injection molding manner. In particular, the middle of the integral buffering elastic sheet 73 is fixed in the injection molding body 32 of the push rod component 3 in an injection molding mode.
In this embodiment, a second through hole 731 is further disposed in the middle of the integral buffering elastic piece 73, through which the push rod of the push rod component can pass.
The utility model discloses a can improve direct current relay of contact stability, adopted in the catch bar part 3, under the bottom corresponding to spring 4 position, still extend respectively to both sides limit and be equipped with lamination formula support shell fragment 5, and be equipped with the U type in the lamination formula supports shell fragment 5 and bend 51, the terminal 52 that lamination formula supported shell fragment 5 supports the bottom surface of drawing forth the end position of contact to static contact at the both ends of movable contact spring piece 2, draw forth the end position of contact to provide support and contact pressure with static contact in order to utilize two lamination formula support shell fragments 5 to draw forth the end position of contact to the both ends of movable contact spring piece 2 respectively, thereby improve the stability of contact. The structure of the utility model utilizes the laminated supporting spring 5 to support the two ends of the movable spring, the lamination deformation provides the contact pressure when the contact is closed, because the contact pressure and the supporting point of the laminated supporting spring 5 are positioned on the same straight line, the stress is in one-to-one relationship, the action and the release rebound can be reduced, the unilateral spring opening of the movable spring is prevented, and the contact stability is improved; the multiple reeds 53 are laminated together, so that compared with a single reed, the rigidity is lower, the flexibility of the mechanism can be improved, the support sheet is prevented from being broken or mechanically clamped, and the contact with the movable contact sheet is not easy to break; the U-shaped bending in the middle of the lamination can coordinate and compensate the deformation of different sheets when the laminated supporting elastic sheet is compressed, and the local stress concentration is avoided.
The utility model discloses a can improve direct current relay of contact stability has adopted in catch bar part 3, in the top that corresponds to yoke board 6, still extends respectively to both sides limit and is equipped with buffering shell fragment 7, and cushions shell fragment 7 and be in the below that lamination formula supported shell fragment 5 to terminal 71 that will cushion shell fragment 7 when the contact releases supports on yoke board 6. The utility model discloses a this kind of structure utilizes buffering shell fragment 7 for the subassembly that moves that catch bar part 3 and movable reed 2 constitute when releasing and yoke 6 soft landing, noise when can reducing the release improves the big shortcoming of current product noise.
Example two
Referring to fig. 12, the difference between the dc relay of the present invention and the first embodiment is that the spring is not installed between the middle of the movable spring piece 2 and the push rod member 3, and the movable spring piece 2 is assembled in the push rod member 3 through the laminated supporting elastic piece 5.
The utility model discloses a get rid of the spring among the prior art, support shell fragment 5 with two lamination formulas and replace prior art's spring, all the other structures are the same with embodiment one.
The utility model discloses a can improve direct current relay of contact stability has adopted two lamination formula support shell fragment 5 to replace the spring, like this, can reduce part quantity, can reduce the height that lamination formula supported the shell fragment simultaneously, can adjust contact pressure through the rigidity that the lamination formula supported the shell fragment of adjustment, saves relay housing (ceramic cover promptly) high space.
The foregoing is illustrative of the preferred embodiment of the present 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 limit the present invention. The technical solutions disclosed above can be used by those skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (11)
1. A direct current relay capable of improving contact stability of contacts comprises two stationary contact leading-out terminals, a straight-piece movable reed and a pushing rod component; the middle of the movable spring is assembled in the pushing rod component through a spring, so that the two ends of the movable spring are respectively contacted with the bottom ends of the two stationary contact leading-out ends under the action of the pushing rod component, and current flows in from one stationary contact leading-out end and flows out from the other stationary contact leading-out end after passing through the movable spring; the method is characterized in that: in the push rod component, under the bottom corresponding to the spring position, still extend respectively to both sides limit and be equipped with the lamination formula and support the shell fragment, the terminal bottom surface to the both ends of movable contact spring is supported to the end that the shell fragment was supported to the lamination formula to utilize two lamination formula to support the shell fragments and provide support and contact pressure to the both ends position of movable contact spring respectively, thereby improve the stability of contact.
2. The direct current relay capable of improving contact stability of a contact according to claim 1, characterized in that: u-shaped bends are arranged in the laminated supporting elastic sheets.
3. The direct current relay capable of improving contact stability of a contact according to claim 1, characterized in that: the tail end of the laminated supporting elastic sheet is abutted to the bottom surfaces of the contact positions of the two ends of the movable spring sheet and the leading-out ends of the static contacts.
4. The direct current relay capable of improving contact stability of a contact according to claim 3, characterized in that: the terminal of two lamination formula support shell fragments is established to the portion of bending, the terminal of two lamination formula support shell fragments supports the bottom surface of drawing forth the end position that contacts with the stationary contact at the both ends of movable contact spring through the portion of bending.
5. The direct current relay capable of improving contact stability of a contact according to claim 4, wherein: the positions of the tail ends of the two laminated supporting elastic sheets, which are propped against the two ends of the movable spring sheet, correspond to the centers of the contact positions of the two stationary contact leading-out ends and the two ends of the movable spring sheet.
6. The direct current relay capable of improving contact stability of a contact according to claim 1, 2, 3, 4 or 5, wherein: the laminated supporting spring piece is formed by laminating a plurality of spring pieces, and the spring pieces corresponding to the two side edges of the push rod part are connected to the two sides of the plastic part of the push rod part in an injection molding mode.
7. The direct current relay capable of improving contact stability of a contact according to claim 6, characterized in that: the corresponding reeds on the two sides of the push rod part extend towards the middle respectively and are integrally connected to form an integral reed, and a first through hole through which a push rod in the push rod part can pass is further formed in the middle of the integral reed.
8. The direct current relay capable of improving contact stability of a contact according to claim 1, characterized in that: further, a yoke iron plate is arranged below the matching position of the movable spring and the two stationary contact leading-out ends; in the push rod component, buffering elastic sheets are respectively extended towards two side edges above the yoke plate and are positioned below the laminated supporting elastic sheets, and the tail ends of the buffering elastic sheets are abutted against the yoke plate when the contacts are released.
9. The direct current relay capable of improving contact stability of a contact according to claim 8, characterized in that: the buffering elastic pieces on the two sides of the push rod part are connected to the two sides of the plastic part of the push rod part in an injection molding mode.
10. The direct current relay capable of improving contact stability of a contact according to claim 9, characterized in that: the buffering elastic pieces corresponding to the two side edges of the push rod part extend towards the middle respectively and are integrally connected to form an integral buffering elastic piece, and a second through hole through which a push rod in the push rod part can pass is further formed in the middle of the integral buffering elastic piece.
11. The direct current relay capable of improving contact stability of a contact according to claim 1, characterized in that: the spring is not installed between the middle of the movable spring plate and the pushing rod component, and the movable spring plate is assembled in the pushing rod component through the laminated supporting elastic sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022987955.4U CN214378261U (en) | 2020-12-11 | 2020-12-11 | Direct current relay capable of improving contact stability of contact |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022987955.4U CN214378261U (en) | 2020-12-11 | 2020-12-11 | Direct current relay capable of improving contact stability of contact |
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| Publication Number | Publication Date |
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| CN214378261U true CN214378261U (en) | 2021-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022987955.4U Active CN214378261U (en) | 2020-12-11 | 2020-12-11 | Direct current relay capable of improving contact stability of contact |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116053083A (en) * | 2023-03-31 | 2023-05-02 | 浙江英洛华新能源科技有限公司 | Low noise relay |
-
2020
- 2020-12-11 CN CN202022987955.4U patent/CN214378261U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116053083A (en) * | 2023-03-31 | 2023-05-02 | 浙江英洛华新能源科技有限公司 | Low noise relay |
| CN116053083B (en) * | 2023-03-31 | 2023-08-15 | 浙江英洛华新能源科技有限公司 | Low noise relay |
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