CN220509936U

CN220509936U - Push card and relay

Info

Publication number: CN220509936U
Application number: CN202321760199.9U
Authority: CN
Inventors: 吴温龙; 朱艺青; 傅飞飞; 谭忠华
Original assignee: Zhangzhou Hongfa Electroacoustic Co ltd
Current assignee: Zhangzhou Hongfa Electroacoustic Co ltd
Priority date: 2023-07-05
Filing date: 2023-07-05
Publication date: 2024-02-20
Anticipated expiration: 2033-07-05

Abstract

The utility model relates to a push card and a relay, wherein the push card comprises a first assembly part assembled with a movable reed and a second assembly part assembled with an armature, the first assembly part is of a clamping structure, the push card comprises a first push card split body and a second push card split body, the first push card split body and the second push card split body are combined and fixed to form the clamping structure together, the first push card split body comprises a first clamping part used for forming the clamping structure, the second push card split body comprises a second clamping part used for forming the clamping structure, and the two sides of a sheet body of the movable reed are clamped and assembled through the first clamping part and the second clamping part. The pushing card is arranged to be formed into the clamping structure by combining the first pushing card split body and the second pushing card split body, so that a narrow clamping opening is not required to be formed on a whole pushing card in an injection molding way like the prior art, and the problem that an insert forming the clamping opening is difficult to manufacture in the injection molding process is avoided.

Description

Push card and relay

Technical Field

The utility model relates to the field of switching appliances, in particular to a push card structure of a relay.

Background

The push card is a component in the relay, and plays an important role in the switch control response of the relay as a coupling structure of the armature in the magnetic circuit part of the relay and the movable spring in the movable spring part. One end of the push card is connected with the armature, the other end of the push card is connected with the movable spring, and with the requirement of automatic production, a clamping opening is arranged on the current push card, and the clamping opening and the movable spring are connected in a plugging manner, typically a U-shaped clamping opening is adopted, and when the push card is applied to a switch control relay of two groups of loops, one end of the push card is also often arranged into an H shape so as to be provided with two U-shaped clamping openings corresponding to the two movable springs.

Because the movable reed is a thinner sheet body, the clamping opening on the pushing card also has to be manufactured into a narrow clamping opening with precise size in order to ensure reliable insertion with the movable reed and improve the response speed. However, the push card in the prior art is generally of a single structure, that is, the push card is generally a single piece of independent component, and the clamping opening is generally obtained after injection molding, but because the clamping opening is too narrow, the insert structure in the mold for injection molding the push card must be made very thin, so that the middle insert is easy to break down. In addition, when the single independent structure is pushed to be clamped with the movable reed for assembly, the movable reed is required to be inserted into the clamping opening, and the movable reed is difficult to assemble in an automatic assembly process due to the fact that the clamping opening is too small, the condition that the movable reed cannot be assembled in place easily occurs, and the movable reed is required to be guided by using a tool with high precision for splicing and assembling, so that the cost is increased, and the assembly process is increased.

Disclosure of Invention

Therefore, in order to solve the problems, the utility model provides a pushing card with optimized structure, and a relay with the pushing card is also provided based on the pushing card.

The utility model is realized by adopting the following technical scheme:

the utility model provides a push card, which is used for receiving the driving of an armature to drive a movable spring to act, and comprises a first assembly part assembled with the movable spring and a second assembly part assembled with the armature, wherein the first assembly part is of a clamping structure, the push card comprises a first push card split body and a second push card split body, the first push card split body and the second push card split body are combined and fixed to jointly form the clamping structure, the first push card split body comprises a first clamping part used for forming the clamping structure, the second push card split body comprises a second clamping part used for forming the clamping structure, and the two sides of a sheet body of the movable spring are clamped and assembled through the first clamping part and the second clamping part.

In one embodiment, at least one of the first push card split and the second push card split is a series fitting with a plurality of specifications, the series fitting with the plurality of specifications corresponds to different widths of the clamping opening structure, and the clamping opening structures with different clamping opening widths are formed by combining the first push card split and/or the second push card split with different specifications.

In one embodiment, at least one of the first push card split and the second push card split is a series fitting with a plurality of specifications, the series fitting with the plurality of specifications corresponds to different clamping angles of the clamping opening structure, and the clamping opening structure with different clamping angles is formed by combining the first push card split and/or the second push card split with different specifications.

Wherein, in one embodiment, the first pusher card subassembly and the second pusher card subassembly are injection molded from a thermoset material.

The utility model also provides a relay which comprises a movable spring part, a static spring part, a magnetic circuit part and a pushing card, wherein the magnetic circuit part comprises an armature, the movable spring part comprises a movable spring, and the pushing card is the pushing card.

In one embodiment, the relay further comprises a base, the base is defined to be arranged at the lower position of the relay, the movable spring part further comprises a movable spring support, the movable spring is fixedly and electrically connected to the movable spring support, and the movable spring support is fixedly inserted and connected to the base downwards.

Wherein in one embodiment, the base supports the first pusher card subassembly upward.

In one embodiment, the second assembly part and the armature are assembled in an inserting manner in the up-down direction so that the armature and the first pushing clamp are connected in a split linkage manner.

In one embodiment, the first pushing card split body and the second pushing card split body are spliced, combined and fixed in the up-down direction, and the second pushing card split body is partially overlapped above the first pushing card split body.

In one embodiment, the first clamping part and the second clamping part are arranged at two sides of the sheet body of the movable reed in a staggered mode.

In one embodiment, the first pushing card split body comprises two plugging parts, the second pushing card split body comprises two plugging matching parts, the plugging parts are in plugging matching with the plugging matching parts, one of the plugging parts and the plugging matching parts is a slot, and the other one of the plugging parts and the plugging matching parts is a plugging protrusion.

In one embodiment, the upper end of the movable spring is fixedly and electrically connected to the movable spring support, and the lower end of the movable spring is suspended, so that a gap with a downward opening is formed between the movable spring and the movable spring support, and the first clamping part is inserted into the gap.

In one embodiment, the movable spring part is provided with two groups which are vertically arranged, the vertical direction of the two groups of movable spring parts is defined as the front-back direction, the first pushing clamp split body further comprises a first main body, the first clamping part is arranged at one end of the first main body, which is far away from the armature, the second pushing clamp split body further comprises a second main body, the second clamping part is arranged at one end of the second main body, which is far away from the armature, the first main body and the second main body are respectively penetrated through two groups of opposite gaps of the movable spring part, the first clamping part extends in the front-back direction so as to form a T-shaped structure with the first main body, the second clamping part extends in the front-back direction so as to form a T-shaped structure with the second main body, the front end of the first clamping part and the front end of the second clamping part are correspondingly arranged at two sides of one movable spring, and the rear end of the first clamping part and the rear end of the second clamping part are respectively arranged at two sides of the other movable spring.

The utility model has the following beneficial effects: the pushing card is arranged to be formed into the clamping structure by combining the first pushing card split body and the second pushing card split body, so that a narrow clamping opening is not required to be formed on a whole pushing card in an injection molding way like the prior art, and the problem that an insert forming the clamping opening is difficult to manufacture in the injection molding process is avoided. The first pushing card split body and the second pushing card split body are combined to form the pushing card clamping port, when the relay is assembled, the first pushing card split body, the movable spring part and the second pushing card split body can be installed firstly, the movable spring is not required to be inserted and assembled in the pushing card clamping port like the prior art, and the movable spring is clamped on two sides of the driven spring of the first pushing card split body and the driven spring of the second pushing card split body respectively, so that the assembly of the movable spring is easier due to the improvement of the pushing card, and the high-precision position positioning is not required to be relied on. In addition, because the manufacturability of the push card structure is improved, the push card can be manufactured by adopting a thermosetting material instead of a common thermoplastic material, and the push card manufactured by adopting the thermosetting material has higher strength and better heat resistance, can effectively resist the temperature rise during the working of the relay, and improves the reliability of the product.

Drawings

FIG. 1 is a schematic diagram of an embodiment relay (with the outer housing hidden);

FIG. 2 is an enlarged view of a portion of FIG. 1 at M;

FIG. 3 is a structural exploded view of the relay of the embodiment;

FIG. 4 is a schematic diagram of a first pusher card split in an embodiment;

FIG. 5 is a schematic diagram of a second pusher card split in an embodiment;

fig. 6 is a schematic diagram of the installation of the first pusher card subassembly and armature downward in the installation procedure of the relay in the embodiment;

fig. 7 is a schematic view of a downward mounting moving spring portion in the mounting flow of the relay in the embodiment;

fig. 8 is a schematic diagram of the second pusher card split installed downward in the installation flow of the relay in the embodiment.

Detailed Description

For further illustration of the various embodiments, the utility model is provided with the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments and together with the description, serve to explain the principles of the embodiments. With reference to these matters, one of ordinary skill in the art will understand other possible embodiments and advantages of the present utility model. The components in the figures are not drawn to scale and like reference numerals are generally used to designate like components.

The utility model will now be further described with reference to the drawings and detailed description.

Referring to fig. 1 to 3, as a preferred embodiment of the present utility model, there is provided a relay, more specifically, an electromagnetic relay, including a base 2, an outer case 6, an electromagnetic portion 3, a movable spring portion 4, and a stationary spring portion 5. The electromagnetic part 3, the movable spring part 4 and the static spring part 5 are mounted on the base 2, wherein the electromagnetic part 3 comprises an armature 31, and further comprises basic components such as an iron core, a coil, a yoke iron and the like, and the principle that the electromagnetic part 3 drives the armature 31 to act by electromagnetic force is mature prior art, and the embodiment is not described in detail. For convenience of description, the base 2 is defined to be located at a lower position of the relay, that is, in fig. 1, the Z2 direction is downward, and in contrast, the Z1 direction is upward. The movable spring part 4 comprises a movable spring support 42 and a movable spring 41, the movable spring 41 is fixedly and electrically connected (e.g. riveted and welded) on the movable spring support 42, the movable spring support 42 is fixedly inserted downwards and fixed on the base 2, a movable contact is arranged on the movable spring 41, and the stationary spring part 5 comprises a stationary contact. A pushing card 1 is arranged between the armature 31 and the movable spring part 4, the pushing card 1 is used for connecting the armature 31 and the movable spring part 4, the pushing card 1 is matched with the action of the armature 31 to drive the movable spring 41 to contact or separate from the fixed spring part 5, so that the contact or separation of movable and fixed contacts is realized, and the connection or disconnection of a loop is finally realized.

As shown in fig. 2 and 3, the push card 1 is more specifically a combined push card in this embodiment, and includes a first push card split 11 and a second push card split 12, where the first push card split 11 and the second push card split 12 are two independent structures, but can be combined and fixed to form the push card 1, the first push card split 11 includes a first clamping portion 111, the second push card split 12 includes a second clamping portion 121, the first push card split 11 and the second push card split 12 are combined and fixed, and simultaneously the first clamping portion 111 and the second clamping portion 121 form a clamping structure, and two sides of a sheet body of the movable reed 41 are clamped and assembled by the first clamping portion 111 and the second clamping portion 121. Alternatively, after the relay is assembled, the first clamping portion 111 and the second clamping portion 121 are respectively disposed on two sides of the sheet body of the movable reed 41, so as to mutually cooperate to form a clamping structure for clamping the sheet body of the movable reed 41. The clamping structure is a first assembling part on the push card 1 for assembling with the movable spring 41, meanwhile, a second assembling part for assembling with the armature 31 is also arranged on the push card 1, when the armature 31 acts, the push card 1 is driven to act, and the movable spring 41 is pushed to contact with or separate from the static spring part 5 by the contact between the clamping opening formed by the first clamping part 111 and the second clamping part 121 and the movable spring 41.

In this embodiment, the push card is configured by combining the first push card split 11 and the second push card split 12, especially, the push card clamping structure is formed by a first clamping portion 111 and a second clamping portion 121 respectively provided on the first push card split 11 and the second push card split 12, and the first clamping portion 111 and the second clamping portion 121 provide two clamping wall surfaces to form a clamping opening, so that it is not necessary to form a narrow clamping opening on a whole push card by injection molding as in the prior art, and the problem that an insert forming the clamping opening is difficult to manufacture in the injection molding process is avoided. More importantly, since the pushing clip opening is formed by combining the first pushing clip split 11 and the second pushing clip split 12, the first pushing clip split 11, the movable spring part 4 and the second pushing clip split 12 can be installed first during assembly, that is, the movable spring 41 does not need to be inserted and assembled in the pushing clip opening like the prior art, but the movable spring 41 is clamped by two sides of the driven spring 41 of the first pushing clip split 11 and the second pushing clip split 12 respectively, so that the movable spring 41 of the embodiment is easier to assemble due to the improvement of the pushing clip 1 and does not need to rely on high-precision position positioning. In addition, because the manufacturability of the push card structure is improved, the push card can be manufactured by adopting a thermosetting material instead of a common thermoplastic material, and the push card manufactured by adopting the thermosetting material has higher strength and better heat resistance, can effectively resist the temperature rise during the working of the relay, and improves the reliability of the product. In this embodiment, the first push card split 11 and the second push card split 12 are both made by injection molding of a thermosetting material (e.g., melamine resin, unsaturated polyester resin, epoxy resin, etc.).

Another advantage of the structure of the nip formed by the first clamping portion 111 and the second clamping portion 121 is that the width and the clamping angle of the nip can be easily adjusted, for example, when the nip is found to be too narrow or too wide, the width of the nip can be adjusted only by adjusting the connection point of the first push card split 11 and the second push card split 12 or the specific position of the clamping wall surface in the manufacturing process, for example, when the movable reed 41 is found to need to be clamped at different angles, only by adjusting the convex shape of the clamping wall surface of the first push card split 11 and/or the second push card split 12 in the manufacturing process, and the flexibility is high. Based on this feature, in another embodiment, at least one of the first push card split 11 and the second push card split 12 may be configured as a series of fittings having a plurality of specifications, where the series of fittings having a plurality of specifications corresponds to different widths of the nip structure, and the first push card split 11 and/or the second push card split 12 having different specifications are combined to form the nip structure having different nip widths. In still another embodiment, at least one of the first push card split 11 and the second push card split 12 may be configured as a series of fittings having a plurality of specifications corresponding to different clamping angles of the clamping structures, and the clamping structures with different clamping angles may be formed by combining the first push card split 11 and/or the second push card split 12 with different specifications.

As shown in fig. 4 and 5, the first push card split 11 includes a first main body 110, two plugging portions 112 are provided on the first main body 110, the second push card split 12 includes a second main body 120, two plugging mating portions 122 are provided on the second main body 120, and the plugging portions 112 and the plugging mating portions 122 are plugged and mated, so that the combination of the first push card split 11 and the second push card split 12 is fixed as the push card 1. In the present embodiment, the plugging portion 112 is a slot and the plugging mating portion 122 is a plugging protrusion, but in other embodiments, the plugging portion 112 may be a plugging protrusion and the plugging mating portion 122 may be a slot. In this embodiment, the plugging portion 112 and the plugging mating portion 122 are respectively provided with two corresponding plugging portions, but in other embodiments, one or three, four or more plugging portions may be provided, and the two plugging portions 112 and the two plugging mating portions 122 are adopted to limit the relative rotation of the first push card split 11 and the second push card split 12 after plugging on the premise of saving cost. In this embodiment, although the combination of the first push card split 11 and the second push card split 12 is implemented by adopting a plugging assembly manner, in other embodiments, other means may be adopted to assemble the first push card split 11 and the second push card split 12, for example, screwing, bonding, etc., but the implementation of automatic installation is facilitated by adopting plugging.

In this embodiment, the assembly of the armature 31 and the push card 1, the assembly of the movable spring portion 4 and the push card 1, and the assembly of the movable spring portion 4 and the base 2 are all installed in the up-down direction, which is advantageous for grasping and installing parts in an automated production process. Referring to fig. 6 to 8, a part of the installation procedure of the relay is shown, firstly, the base 2 supports the first push card split 11 upwards, that is, the first push card split 11 is placed on the base 2 downwards, where in order to realize the support of the base 2 to the first push card split 11, a supporting platform may be provided on the base 2, or a guide rail for guiding the movement of the first push card split 11 is provided on the base 2, and the guide rail simultaneously plays an upwards supporting role; then the armature 31 is placed downwards on the yoke, one end is matched with the pole face of the iron core, and the other end is matched with the first pushing card split body 11 in a plugging manner, wherein referring to fig. 5, a slot 113 is arranged on the first main body 110 of the first pushing card split body 11 and is used as a second assembly part of the pushing card 1, and the slot 113 and the other end of the armature 31 are assembled in a plugging manner in the up-down direction so as to enable the armature 31 and the first pushing card split body 11 to be connected in a linkage manner; then, the movable spring part 4 is fixed on the base 2 in a downward inserting manner, wherein, referring to fig. 2-4, the upper end of the movable spring 41 is fixedly and electrically connected to the movable spring support 42, and the lower end is suspended, so that a gap with a downward opening is formed between the movable spring 41 and the movable spring support 42, and when the movable spring part 4 is fixed on the base 2 in a downward inserting manner, the first clamping part 111 is inserted into the gap, and the first clamping part 111 is positioned on one side of a sheet body of the movable spring 41; finally, the second pushing card split body 12 is inserted downwards on the first pushing card split body 11, and the second clamping part 121 is positioned at the other side of the sheet body of the movable reed 41.

In this embodiment, the first push-card split 11 and the second push-card split 12 are assembled and fixed in the vertical direction for convenience of automatic assembly, however, in other embodiments, the first push-card split 11 and the second push-card split 12 may be assembled in other directions, for example, if the direction perpendicular to the sheet body of the movable reed 41 is the left-right direction (i.e., the X1-X2 direction in fig. 1 is the left-right direction), the first push-card split 11 and the second push-card split 12 may also be assembled in the left-right direction.

In this embodiment, the first push card split 11 and the second push card split 12 are inserted in the up-down direction, so that the second push card split 12 is partially overlapped above the first push card split 11, thereby reducing the external volume of the combined push card 1. In addition, since the second push card split 12 is located above the first push card split 11, the first clamping portion 111 and the second clamping portion 112 are arranged at both sides of the sheet body of the movable reed 41 in a staggered manner, so that the movable reed 41 can be clamped more tightly.

In this embodiment, two groups of moving spring portions 4 are provided, the side-by-side directions of the two groups of moving spring portions 4 are defined as front-to-back directions (i.e. the Y1-Y2 directions in fig. 1 are the front-to-back directions), the first body 110 and the second body 120 are both provided through opposite gaps of the two groups of moving spring portions 4, the first clamping portion 111 is provided at one end of the first body 110 facing away from the armature 31, the second clamping portion 121 is provided at one end of the second body 120 facing away from the armature 31, the first clamping portion 111 extends in the front-to-back direction so as to form a "T" structure with the first body 120, and the second clamping portion 121 extends in the front-to-back direction so as to form a "T" structure with the second body 120, such that the front end of the first clamping portion 111 and the front end of the second clamping portion 121 correspond to two sides of the sheet body of one moving spring 41, and the rear end of the first clamping portion 111 and the rear end of the second clamping portion 121 correspond to two sides of the other moving spring 41, so as to control actuation of the two groups of moving spring portions 4 simultaneously.

While the utility model has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The pushing card is used for receiving the driving of the armature to drive the movable spring to act and comprises a first assembly part assembled with the movable spring and a second assembly part assembled with the armature, and is characterized in that: the first assembly part is of a clamping structure, the pushing card comprises a first pushing card split body and a second pushing card split body, the first pushing card split body and the second pushing card split body are combined and fixed to form the clamping structure together, the first pushing card split body comprises a first clamping part used for forming the clamping structure, the second pushing card split body comprises a second clamping part used for forming the clamping structure, and clamping assembly is carried out on two sides of a sheet body of the movable reed through the first clamping part and the second clamping part.

2. The pusher card of claim 1, wherein: at least one of the first pushing card split and the second pushing card split has a plurality of different specifications, the plurality of different specifications correspond to different widths of the clamping opening structures, and the clamping opening structures with different clamping opening widths are formed by combining the first pushing card split and/or the second pushing card split with different specifications.

3. The pusher card of claim 1, wherein: at least one of the first pushing card split body and the second pushing card split body has a plurality of different specifications, the plurality of different specifications correspond to different clamping angles of the clamping opening structure, and the clamping opening structure with different clamping angles is formed by combining the first pushing card split body and/or the second pushing card split body with different specifications.

4. The pusher card of claim 1, wherein: the first pushing card split body and the second pushing card split body are made of thermosetting materials through injection molding.

5. The relay comprises a movable spring part, a static spring part, a magnetic circuit part and a pushing clamp, wherein the magnetic circuit part comprises an armature, and the movable spring part comprises a movable spring, and is characterized in that: the pusher card is the pusher card of any of claims 1-4.

6. The relay of claim 5, wherein: the movable spring part further comprises a movable spring support, the movable spring is fixedly and electrically connected to the movable spring support, and the movable spring support is fixed to the base in a downward inserting mode.

7. The relay of claim 6, wherein: the base supports the first pushing card split body upwards.

8. The relay of claim 6, wherein: the second assembly part and the armature are spliced and assembled in the up-down direction, so that the armature and the first pushing clamp are connected in a split linkage way.

9. The relay of claim 6, wherein: the first pushing card split body and the second pushing card split body are spliced, combined and fixed in the up-down direction, and the second pushing card split body part is overlapped above the first pushing card split body.

10. Relay according to claim 5 or 9, characterized in that: the first clamping part and the second clamping part are arranged at two sides of the sheet body of the movable reed in a staggered mode.

11. The relay of claim 9, wherein: the first pushing card split body comprises two inserting connection parts, the second pushing card split body comprises two inserting connection matching parts, the inserting connection parts are in inserting connection matching with the inserting connection matching parts, one of the inserting connection parts and the inserting connection matching parts is a slot, and the other of the inserting connection parts and the inserting connection matching parts is an inserting connection protrusion.

12. The relay of claim 6, wherein: the upper end of the movable reed is fixedly and electrically connected to the movable reed bracket, and the lower end of the movable reed is suspended, so that a gap with a downward opening is formed between the movable reed and the movable reed bracket, and the first clamping part is inserted into the gap.

13. The relay of claim 5, wherein: the movable spring part is provided with two groups which are vertically arranged, the vertical direction of the two groups of movable spring parts is defined as the front-back direction, the first pushing clamp split body further comprises a first main body, the first clamping part is arranged at one end of the first main body, which is away from the armature, the second pushing clamp split body further comprises a second main body, the second clamping part is arranged at one end of the second main body, which is away from the armature, the first main body and the second main body respectively penetrate through two groups of opposite gaps of the movable spring part, the first clamping part extends in the front-back direction so as to form a T-shaped structure with the first main body, the second clamping part extends in the front-back direction so as to form a T-shaped structure with the second main body, the front end of the first clamping part and the front end of the second clamping part correspond to two sides of one movable spring piece, and the rear end of the first clamping part and the rear end of the second clamping part correspond to two sides of one movable spring piece.