Pusher card and relay

Abstract

The present application relates to push card and relay, push card includes with moving spring piece assembly first assembly part and with armature assembly second assembly part, first assembly part is the structure of clamping mouth, push card includes first push card part and second push card part, first push card part and second push card part combination fixed and jointly form the structure of clamping mouth, first push card part includes the first clamping part for forming the structure of clamping mouth, second push card part includes the second clamping part for forming the structure of clamping mouth, through the clamping assembly of both sides of the piece body of moving spring piece by first clamping part and second clamping part.The present application sets up push card to be by first push card part and second push card part combination constitutes the structure of clamping mouth, therefore does not have to be like in prior art as in the whole piece push card injection moulding narrow clamping mouth, thereby avoids the problem that insert of forming clamping mouth in injection moulding process is difficult to manufacture.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of switch electric appliances, in particular to a push card structure of a relay. BACKGROUND

[0002] The push card is a component in the relay, which is used as the coupling structure of the armature in the magnetic circuit part of the relay and the moving spring piece in the moving spring part, and plays an important role in the switching control response of the relay. One end of the push card is coupled with the armature, and the other end is coupled with the moving spring piece. With the need of automation production, a notch is arranged on the push card at present, and the notch is used for plug-in coupling with the moving spring piece. A typical example is a U-shaped notch. When the push card is applied to a switching control relay of two groups of circuits, one end of the push card is often arranged in an H shape so as to have two U-shaped notches corresponding to two moving spring pieces.

[0003] Since the moving spring piece is a thin piece, in order to ensure reliable plug-in with the moving spring piece and improve the response speed, the notch on the push card also has to be made into a narrow notch with precise dimensions. However, the push card in the prior art is generally a single structure, that is, the push card is usually an independent component in one piece. The notch is usually obtained after injection molding. However, since the notch is too narrow, the insert structure in the mold for injection molding the push card has to be made very thin, so that the middle insert is prone to collapse and other problems. Moreover, when the push card is assembled with the moving spring piece, the moving spring piece needs to be inserted into the notch. Since the notch is too small, the moving spring piece is difficult to assemble in the automatic assembly process, and is prone to misassembly. Generally, a tool is needed to guide the moving spring piece with high precision, and then the moving spring piece is plug-in assembled, which not only increases the cost, but also increases the assembly process. SUMMARY

[0004] Therefore, in view of the above problems, the present application provides a push card with an optimized structure, and a relay with the push card.

[0005] The present application adopts the following technical solutions:

[0006] The present application provides a push card for driving the moving spring piece by receiving the driving of the armature, which comprises a first assembly part for assembling with the moving spring piece and a second assembly part for assembling with the armature. The first assembly part is a notch structure. The push card comprises a first push card part and a second push card part. The first push card part and the second push card part are combined and fixed, and jointly form the notch structure. The first push card part comprises a first clamping part for forming the notch structure. The second push card part comprises a second clamping part for forming the notch structure. The two sides of the moving spring piece are clamped and assembled by the first clamping part and the second clamping part.

[0007] In one embodiment, at least one of the first push card part and the second push card part is a series of fittings with multiple specifications corresponding to different widths of the clamping opening structure, and different clamping opening structures with different widths are formed by combining different specifications of the first push card part and / or the second push card part.

[0008] In one embodiment, at least one of the first push card part and the second push card part is a series of fittings with multiple specifications corresponding to different clamping angles of the clamping opening structure, and different clamping opening structures with different clamping angles are formed by combining different specifications of the first push card part and / or the second push card part.

[0009] In one embodiment, the first push card part and the second push card part are made of thermosetting material injection molding.

[0010] The application also provides a relay, which includes a moving spring part, a stationary spring part, a magnetic circuit part, and a push card, the magnetic circuit part includes an armature, the moving spring part includes a moving spring sheet, and the push card is the push card described above.

[0011] In one embodiment, the relay further includes a base, the base is arranged at a lower position of the relay, the moving spring part further includes a moving spring support, the moving spring sheet is fixedly and electrically connected to the moving spring support, and the moving spring support is downwardly inserted and fixed to the base.

[0012] In one embodiment, the base upwardly supports the first push card part.

[0013] In one embodiment, the second assembly part and the armature are upwardly and downwardly inserted and assembled to link the armature and the first push card part.

[0014] In one embodiment, the first push card part and the second push card part are upwardly and downwardly inserted and assembled to be fixed, and the second push card part is partially overlaid above the first push card part.

[0015] In one embodiment, the first clamping part and the second clamping part are arranged in a staggered manner on both sides of the moving spring sheet.

[0016] In one embodiment, the first push card part includes two insertion parts, the second push card part includes two insertion matching parts, the insertion parts and the insertion matching parts are inserted and matched, and one of the insertion parts and the insertion matching parts is a slot, and the other is an insertion protrusion.

[0017] Wherein, in one embodiment, the upper end of the moving spring blade is fixedly electrically connected to the moving spring support, and the lower end is suspended, so that the moving spring blade and the moving spring support have a downwardly opening gap therebetween, and the first clamping portion is inserted into the gap.

[0018] Wherein, in one embodiment, the moving spring portion is provided with two groups in parallel, the parallel direction of the two groups of moving spring portions is defined as the front-rear direction, the first pusher clamping portion further comprises a first main body, the first clamping portion is arranged at one end of the first main body away from the armature, the second pusher clamping portion further comprises a second main body, the second clamping portion is arranged at one end of the second main body away from the armature, the first main body and the second main body are arranged through the opposite gaps of the two groups of moving spring portions, the first clamping portion extends in the front-rear direction so as to form a "T" shape structure with the first main body, the second clamping portion extends in the front-rear direction so as to form a "T" shape structure with the second main body, the front end of the first clamping portion and the front end of the second clamping portion correspond to both sides of the blade body of one of the moving spring blades, and the rear end of the first clamping portion and the rear end of the second clamping portion correspond to both sides of the blade body of the other moving spring blade.

[0019] The present application has the following beneficial effects: the pusher clamping portion is composed of the first pusher clamping portion and the second pusher clamping portion, so it is not necessary to form a narrow clamping portion on a whole pusher clamping portion by injection molding, thereby avoiding the problem that the insert for forming the clamping portion is difficult to manufacture. Moreover, since the pusher clamping portion is composed of the first pusher clamping portion and the second pusher clamping portion, the first pusher clamping portion is installed first, then the moving spring portion is installed, and then the second pusher clamping portion is installed, so the moving spring blade does not need to be inserted into the pusher clamping portion, but the first pusher clamping portion and the second pusher clamping portion are installed from both sides of the moving spring blade to clamp the moving spring blade, thereby the moving spring blade is easier to assemble, and does not need to rely on high-precision position positioning. In addition, since the process of the pusher clamping portion is improved, the pusher clamping portion can be made of thermosetting material instead of general thermoplastic material, the pusher clamping portion made of thermosetting material has higher strength and better heat resistance, can effectively resist the temperature rise during the operation of the relay, and improves the reliability of the product. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a schematic view of the relay in the embodiment (the shell is hidden);

[0021] Figure 2 is Figure 1 is a partial enlarged view of M in FIG. 4;

[0022] Figure 3 is an exploded view of the structure of the relay in the embodiment;

[0023] Figure 4 Figure 1 is a schematic diagram of a first pusher half in an embodiment;

[0024] Figure 5 Figure 2 is a schematic diagram of a second pusher half in an embodiment;

[0025] Figure 6 Figure 3 is a schematic diagram of the installation process of a relay in an embodiment, showing the downward installation of the first pusher half and the armature;

[0026] Figure 7 Figure 4 is a schematic diagram of the installation process of a relay in an embodiment, showing the downward installation of the moving spring portion;

[0027] Figure 8 Figure 5 is a schematic diagram of the installation process of a relay in an embodiment, showing the downward installation of the second pusher half. DETAILED DESCRIPTION

[0028] To further illustrate the embodiments, the present disclosure provides drawings. These drawings are part of the disclosure and serve to illustrate the embodiments, and can be used in conjunction with the relevant description of the specification to explain the operating principles of the embodiments. Those of ordinary skill in the art should be able to understand other possible implementations and advantages of the present disclosure in conjunction with these. The components in the drawings are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0029] The present disclosure will be further described in conjunction with the drawings and the specific embodiments.

[0030] Referring to Figures 1-3 As shown in the drawings, as a preferred embodiment of the present disclosure, a relay, more specifically an electromagnetic relay, is provided, which includes a base 2, an outer housing 6, an electromagnetic portion 3, a moving spring portion 4, and a stationary spring portion 5. The electromagnetic portion 3, the moving spring portion 4, and the stationary spring portion 5 are installed on the base 2, wherein the electromagnetic portion 3 includes an armature 31, and also includes basic components such as a core, a coil, a yoke, etc., and the principle of driving the armature 31 to act by electromagnetic force of the electromagnetic portion 3 is mature existing technology, which will not be described in detail in this example. For ease of description, the base 2 is defined to be in a lower position of the relay in this embodiment, i.e. Figure 1The Z2 direction is downward, while the opposite Z1 direction is upward. The movable spring portion 4 comprises a movable spring bracket 42 and a movable spring piece 41. The movable spring piece 41 is fixedly and electrically connected (e.g., riveted or welded) to the movable spring bracket 42. The movable spring bracket 42 is inserted downwardly into the base 2 and fixed. The movable spring piece 41 is provided with a movable contact, and the static spring portion 5 includes a static contact. A push card 1 is provided between the armature 31 and the movable spring portion 4. This push card 1 connects the armature 31 and the movable spring portion 4. The push card 1 cooperates with the movement of the armature 31 to drive the movable spring piece 41 into contact or separation with the static spring portion 5, thereby achieving contact or separation between the movable and static contacts, ultimately connecting or disconnecting the circuit.

[0031] like Figure 2 、 3 In this embodiment, the push card 1 is more specifically a combined push card, including a first push card split 11 and a second push card split 12. The first push card split 11 and the second push card split 12 are two independent structures, but the two can be combined and fixed to form the push card 1. The first push card split 11 includes a first clamping portion 111, and 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 the first clamping portion 111 and the second clamping portion 121 form a clamping structure, and the first clamping portion 111 and the second clamping portion 121 are used to clamp and assemble the two sides of the movable spring 41. In other words, after the relay is assembled, the first clamping portion 111 and the second clamping portion 121 are respectively arranged on both sides of the movable spring 41, thereby cooperating with each other to form a clamping structure for clamping the movable spring 41. This clamping structure is the first assembly part on the pushing card 1 for assembling with the dynamic spring 41. At the same time, the pushing card 1 is also provided with a second assembly part for assembling with the armature 31. When the armature 31 is actuated, it drives the pushing card 1 to actuate, and the clamping formed by the first clamping part 111 and the second clamping part 121 and the dynamic spring 41 contacts or separates the dynamic spring 41 from the static spring part 5.

[0032] The pusher of the present embodiment is composed of a first pusher part 11 and a second pusher part 12, and the pusher clamping structure is composed of a first clamping part 111 and a second clamping part 121 of the first pusher part 11 and the second pusher part 12 respectively. The first clamping part 111 and the second clamping part 121 provide two clamping walls to form the clamping opening, so it is not necessary to form a narrow clamping opening on a whole pusher by injection molding as in the prior art, thus avoiding the problem that the insert for forming the clamping opening is difficult to manufacture during the injection molding process. More importantly, since the pusher clamping opening is composed of the first pusher part 11 and the second pusher part 12, the first pusher part 11 can be installed first, then the moving spring part 4 is installed, and then the second pusher part 12 is installed, that is, it is not necessary to insert the moving spring sheet 41 into the pusher clamping opening as in the prior art, but the first pusher part 11 and the second pusher part 12 are installed respectively to clamp the moving spring sheet 41 from both sides of the moving spring sheet 41. Therefore, due to the improvement of the pusher 1, the assembly of the moving spring sheet 41 of the present embodiment is easier, and it does not need to rely on high-precision position positioning. In addition, since the process of the pusher structure is improved, the pusher can be made of thermosetting material instead of general thermoplastic material. The pusher made of thermosetting material has higher strength and better heat resistance, which can effectively resist the temperature rise during the operation of the relay and improve the reliability of the product. In the present embodiment, the first pusher part 11 and the second pusher part 12 are both made of thermosetting material (such as melamine resin, unsaturated polyester resin, epoxy resin, etc.) by injection molding.

[0033] Another advantage of the clip structure composed of the first clamping part 111 and the second clamping part 121 is that the width of the clip and the clamping angle are easy to adjust, for example, when it is found that the clip is too narrow or too wide, the width of the clip can be adjusted by adjusting the connection point of the first push card part 11 and the second push card part 12 or the specific position of the clamping wall in the manufacturing process, and for example, when it is found that the moving spring sheet 41 needs to be clamped at different angles, the clamping angle of the clip structure can be adjusted by adjusting the protruding shape of the clamping wall of the first push card part 11 and / or the second push card part 12 in the manufacturing process, which is very flexible. Based on this feature, in another embodiment, at least one of the first push card part 11 and the second push card part 12 can be provided as a series of accessories with multiple specifications, and the series of accessories with multiple specifications correspond to different widths of the clip structure. By combining different specifications of the first push card part 11 and / or the second push card part 12, the clip structure with different widths of the clip can be formed. In still another embodiment, at least one of the first push card part 11 and the second push card part 12 can be provided as a series of accessories with multiple specifications, and the multiple specifications correspond to different clamping angles of the clip structure. By combining different specifications of the first push card part 11 and / or the second push card part 12, the clip structure with different clamping angles can be formed.

[0034] As Figure 4 , 5 , the first push card part 11 includes a first main body 110, and two insertion parts 112 are provided on the first main body 110. The second push card part 12 includes a second main body 120, and two insertion matching parts 122 are provided on the second main body 120. The insertion part 112 and the insertion matching part 122 are inserted and matched, so that the combination of the first push card part 11 and the second push card part 12 is fixed as the push card 1. In this embodiment, the insertion part 112 is a slot and the insertion matching part 122 is a protrusion, but in other embodiments, the insertion part 112 can be a protrusion and the insertion matching part 122 can be a slot. In this embodiment, the insertion part 112 and the insertion matching part 122 are provided with two corresponding ones respectively, but in other embodiments, one or three, four or more can be provided. The use of two insertion parts 112 and insertion matching parts 122 can limit the relative rotation of the first push card part 11 and the second push card part 12 after insertion under the premise of saving cost. Although the combination of the first push card part 11 and the second push card part 12 is realized by insertion assembly in this embodiment, in other embodiments, other means such as screwing and bonding can be used to assemble the first push card part 11 and the second push card part 12, but insertion is conducive to the realization of automatic installation.

[0035] The assembling of the armature 31 and the push card 1, the assembling of the moving spring part 4 and the push card 1, and the assembling of the moving spring part 4 and the base 2 are all installed in the up-down direction, which is beneficial to the grabbing and installing of the parts in the automatic production process. Referring to Figures 6-8 , the partial installing process of the relay is shown, first, the base 2 supports the first push card part 11 upward, that is, the first push card part 11 is placed downward on the base 2, here, in order to realize the support of the base 2 to the first push card part 11, a support platform can be arranged on the base 2, or a guide rail for guiding the movement of the first push card part 11 is arranged on the base 2, which simultaneously plays the role of upward support; then the armature 31 is placed downward on the yoke, one end cooperates with the core pole surface and the other end downwardly inserts and cooperates with the first push card part 11, here, the cooperation refers to Figure 5 , the first main body 110 of the first push card part 11 is provided with an insertion slot 113 as the second assembling part of the push card 1, the insertion slot 113 and the other end of the armature 31 are inserted and assembled in the up-down direction, so that the armature 31 and the first push card part 11 are linked and connected; then, the moving spring part 4 is downwardly inserted and fixed on the base 2, wherein, the cooperation refers to Figures 2-4 , the upper end of the moving spring sheet 41 is fixedly and electrically connected to the moving spring support 42, and the lower end is suspended, so that there is a gap downwardly opening between the moving spring sheet 41 and the moving spring support 42, when the moving spring part 4 is downwardly inserted and fixed on the base 2, the first clamping part 111 is inserted into the gap, so that the first clamping part 111 is located on one side of the sheet body of the moving spring sheet 41; finally, the second push card part 12 is downwardly inserted on the first push card part 11, and the second clamping part 121 is located on the other side of the sheet body of the moving spring sheet 41.

[0036] In the embodiment, the first push card part 11 and the second push card part 12 are inserted and assembled and fixed in the up-down direction, which is considered for the convenience of automatic assembly, of course, in other embodiments, the first push card part 11 and the second push card part 12 can also be assembled in other directions, for example, if the direction perpendicular to the sheet body of the moving spring sheet 41 is the left-right direction (i.e. Figure 1 , the X1-X2 direction in

[0037] In the embodiment, the first push card part 11 and the second push card part 12 are inserted in the up-down direction, which also makes the second push card part 12 partially overlap above the first push card part 11, so as to reduce the external volume of the combined push card 1. And since the second push card part 12 is above the first push card part 11, the first clamping part 111 and the second clamping part 121 are arranged in a staggered manner on both sides of the sheet body of the moving spring sheet 41, which can clamp the moving spring sheet 41 more tightly.

[0038] In the embodiment, the moving spring part 4 is provided with two groups in parallel, and the parallel direction of the two groups of moving spring part 4 is defined as the front-back direction (i.e. Figure 1 The middle Y1-Y2 direction is the front-back direction), the first main body 110 and the second main body 120 are both provided through the opposite gaps of the two groups of moving spring part 4, the first clamping part 111 is provided at one end of the first main body 110 away from the armature 31, the second clamping part 121 is provided at one end of the second main body 120 away from the armature 31, the first clamping part 111 extends in the front-back direction so as to form a "T" shape structure with the first main body 110, the second clamping part 121 extends in the front-back direction so as to form a "T" shape structure with the second main body 120, so that the front end of the first clamping part 111 and the front end of the second clamping part 121 correspond to the two sides of the sheet body of one of the moving spring sheets 41, and the rear end of the first clamping part 111 and the rear end of the second clamping part 121 correspond to the two sides of the sheet body of the other of the moving spring sheets 41, so as to simultaneously control the operation of the two groups of moving spring part 4.

[0039] Although the present application is specifically shown and described in connection with the preferred embodiments, those skilled in the art will appreciate that various modifications in form and detail can be made to the present application without departing from the spirit and scope of the application as defined in the appended claims.

Claims

1. A push card, which is used to receive the drive of the armature and drive the movable spring to move, and includes a first assembly portion assembled with the movable spring and a second assembly portion assembled with the armature, characterized in that: The first assembly part is a clamping structure, and the pushing card includes a first pushing card split and a second pushing card split. The first pushing card split and the second pushing card split are combined and fixed to form the clamping structure together. The first pushing card split includes a first clamping part for forming the clamping structure, and the second pushing card split includes a second clamping part for forming the clamping structure. The two sides of the movable spring sheet in the thickness direction are clamped and assembled by the first clamping part and the second clamping part. The second assembly part is arranged on the first pushing card split, and the second assembly part and the armature are plugged and assembled in the up and down directions to make the armature and the first pushing card split linked and connected. The first pushing card split and the second pushing card split are plugged and fixed in the up and down directions, and the second pushing card split is partially superimposed on the first pushing card split.

2. The push card according to claim 1, characterized in that: At least one of the first push card split and the second push card split is a series of accessories with multiple specifications, and the multiple specifications of the series of accessories correspond to different widths of the clamp structure. The clamp structure with different clamp widths is formed by combining the first push card split and / or the second push card split of different specifications.

3. The push card according to claim 1, wherein: At least one of the first push card split and the second push card split is a series of accessories with multiple specifications, and the multiple specifications of the series of accessories correspond to different clamping angles of the clamp structure. The clamp structure with different clamping angles is formed by combining the first push card split and / or the second push card split of different specifications.

4. The push card according to claim 1, wherein: The first push card split body and the second push card split body are made of thermosetting material by injection molding.

5. A relay comprising a movable spring portion, a stationary spring portion, a magnetic circuit portion, and a push card, wherein the magnetic circuit portion comprises an armature, and the movable spring portion comprises a movable spring leaf, and wherein: The push card is the push card described in any one of claims 1-4.

6. The relay according to claim 5, characterized in that: It also includes a base, which is defined as being arranged at the lower position of the relay. The dynamic spring part also includes a dynamic spring bracket. The dynamic spring piece is fixedly and electrically connected to the dynamic spring bracket, and the dynamic spring bracket is plugged downward and fixed on the base.

7. The relay according to claim 6, characterized in that: The base supports the first push card split body upwards.

8. The relay according to claim 5 or 6, characterized in that: The first clamping portion and the second clamping portion are staggeredly arranged on both sides of the sheet body of the movable spring sheet.

9. The relay according to claim 6, wherein: The first push card body includes two plug-in parts, and the second push card body includes two plug-in fitting parts. The plug-in parts and the plug-in fitting parts are plug-fitted together, one of the plug-in parts and the plug-in fitting parts is a slot, and the other is a plug-in protrusion.

10. The relay according to claim 6, wherein: The upper end of the movable spring piece is fixedly and electrically connected to the movable spring bracket, and the lower end is suspended, so that a gap opening downward is formed between the movable spring piece and the movable spring bracket, and the first clamping portion is inserted into the gap.

11. The relay according to claim 5, characterized in that: The movable spring part is provided with two parallel groups, and the parallel direction of the two groups of movable spring parts is defined as the front-to-back direction. The first pushing card split also includes a first main body, and the first clamping part is provided at the end of the first main body away from the armature. The second pushing card split also includes a second main body, and the second clamping part is provided at the end of the second main body away from the armature. The first main body and the second main body are both passed through the opposing gaps of the two groups of movable spring parts. The first clamping part extends in the front-to-back direction to form a "T" shape structure with the first main body, and the second clamping part extends in the front-to-back direction to form a "T" shape 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 the two sides of the sheet body of one of the movable spring sheets, and the rear end of the first clamping part and the rear end of the second clamping part correspond to the two sides of the sheet body of the other movable spring sheet.

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