TWI744162B - Contact shrapnel structure of electromagnetic relay - Google Patents

Abstract

The invention provides a contact shrapnel structure of an electromagnetic relay, which includes at least one shrapnel component and at least one contact structure. The elastic sheet assembly includes a first, a second, a third, and a fourth sheet that are sequentially stacked and fixed from top to bottom. The first sheet has a first convex curved portion and a first mounting hole is opened at one end; The two pieces have a second convex arc bending portion and a second mounting hole is opened at one end, wherein the second convex arc bending portion is disposed under the first convex arc bending portion with a gap between each other; the third piece body One end is provided with a third mounting hole; the fourth plate has a fixed section and an elastic section, the fixed section is provided with a fourth mounting hole, and the fourth plate is provided with a plurality of grooves; among them, only the fixed section and the first The three pieces are fixed to each other; the contact structure is penetrated and fixed in the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole. As a result, the force strength of the contact shrapnel structure relative to the relationship between the deformation variables presents a positive linear change characteristic, which greatly improves the operating stability of the contact shrapnel structure when it is engaged or disconnected, thereby achieving better electrical performance .

Description

Contact shrapnel structure of electromagnetic relay

The present invention is related to the field of relays, especially a contact shrapnel structure used in electromagnetic relays.

Relay, also known as electrical relay, is an electronic control component that is widely used in control circuits. In short, a relay is an electronic switch that controls a large current with a small current. Relays can be divided into various types based on their working principles, such as optical relays, electromagnetic relays, thermal relays, and so on.

Taking electromagnetic relays as an example, they can be divided into DC and AC relays according to the nature of the input current, and the working principles of the two are the same, the difference is only in the iron core design. The electromagnetic relay is roughly equipped with electromagnetic coil, movable contact and fixed contact, and the fixed contact is connected to the control circuit. When the electromagnetic coil is energized, the movable contact will be displaced in response to the electromagnetic action of the electromagnetic coil to achieve control The purpose of electrical opening and closing. The movable contact is generally installed on the movable shrapnel to drive the movable contact to move and be connected to or disconnected from the fixed point. In some relay models, considering the mobile requirements and other considerations, it is also seen that the movable shrapnel is designed as a three-piece structure The way. The aforementioned movable shrapnel structure includes three pieces, and perforations are provided on the piece to facilitate the installation of the contact structure. However, although the movable shrapnel has better performance than a single piece in movement, it does The rigidity is too strong and the elastic performance after force is not good, resulting in the contact strength of the contact is not stable enough, so that the relay is prone to high temperature or unstable resistance value due to incomplete contact contact, or even large instantaneous deformation. Loss that causes fracture or irreversibility.

In view of this, the inventor of the present invention has accumulated rich experience in related industries for many years, and conceived and proposed a contact shrapnel structure for electromagnetic relays, hoping to effectively solve the above shortcomings and provide more excellent related products.

One objective of the present invention is to provide a contact shrapnel structure of an electromagnetic relay, which can greatly improve the contact pressing force and stability when the fixed contact is in contact with the movable contact in the electromagnetic relay.

To achieve the above objective, an electromagnetic relay contact spring structure of the present invention includes: at least one spring assembly, including: a first sheet body having a first convex curved portion, and one end of the first sheet body A first mounting hole is opened; a second sheet body is stacked under the first sheet body and fixed to the first sheet body, the second sheet body has a second convex arc bending part, and one end is opened There is a second mounting hole corresponding to the first mounting hole; wherein the second convex arc bending portion is disposed under the first convex arc bending portion with a gap between each other; a third piece is stacked Under the second sheet body and fixed to the second sheet body, one end of the third sheet body is provided with a third mounting hole corresponding to the second mounting hole; and a fourth sheet body is stacked on Below the third plate, the fourth plate has a fixed section and an elastic section. The fixed section is provided with a fourth mounting hole corresponding to the third mounting hole, and the fourth plate is provided with a plurality of Groove; wherein, the fixed section is fixed to the third sheet body, the elastic section is not fixed to the third sheet body; and at least one contact structure is fixed through the first mounting hole, the The second mounting hole, the third mounting hole and the fourth mounting hole. Thereby, the contact spring structure of the present invention can provide an appropriate structural deformation state under force, so as to provide a stable operating smoothness in the limited space of the relay, and effectively improve the operating efficiency and reliability of the relay.

Preferably, the grooves are elongated, and the extending directions of the grooves are parallel to each other, so that the stability during operation can be improved.

Preferably, the grooves extend from the periphery of the fourth mounting hole in the direction of the elastic section to avoid affecting the operation of the contact structure.

Preferably, when the number of the grooves is an odd number, the opening area of the groove at the middle position is larger than the opening area of the grooves on both sides, so that the contact spring structure can be more appropriate when actuated The deformation bears the performance. Furthermore, the number of the grooves is five, so as to have the rigidity and deformation elasticity of the whole sheet.

Preferably, the grooves are arranged radially in the direction of the elastic section with the periphery of the fourth mounting hole as the starting point, so that the grooves are arranged in a manner to ensure the smoothness of operation and the contact The effect of applying better compression stress.

Preferably, at least one of the grooves adjacent to the end of the fourth mounting hole is inclined or arced to correspond to the periphery of the fourth mounting hole to avoid affecting the contact structure.

Preferably, the first sheet body is provided with at least one first set of contact holes opposite to the other end where the first mounting hole is provided, and the second sheet body is provided with at least one The second set of contact holes, the third piece body is provided with at least one third set of contact holes opposite to the other end of the third mounting hole, and the first set of contact holes, the second set of contact holes and the third The group connection holes correspond to each other and communicate with each other to facilitate the grouping and fixing in the relay.

Preferably, the number of the elastic sheet assembly is two, and the two elastic sheet assemblies are arranged side by side in parallel at an interval, and the other end of the two elastic sheet assemblies without the contact structure is fixedly arranged with each other, so Can provide dual-contact applications.

Preferably, the side edge of the end of the elastic sheet assembly provided with the contact structure is in a gradually expanded stepped state, so as to prevent the elastic sheet assembly from being too close to affect the electrical transmission.

In summary, the contact shrapnel structure of the present invention effectively adjusts the relative relationship between the force and the deformation of the overall structure through the special structure design of the fourth piece body, so that the shrapnel can be appropriately structured. In the limited space of the relay, it can effectively increase the pressing force when the contact is in contact, so that the force strength of the contact shrapnel structure shows a positive linear change characteristic with respect to the deformation relationship, and the resistance value changes It is stable, and the present invention also has a more excellent smoothness of operation. More specifically, through the arrangement of the fourth sheet body and its elastic section, fixed section and groove, it can have better displacement smoothness during operation, and make the contact structure and the corresponding other contact in the relay. The pressing force when the points are in contact with each other is improved. Furthermore, considering the various requirements of actual operation, the present invention also proposes the detailed configuration of the grooves on the fourth sheet, so that the fourth sheet can effectively achieve the aforementioned effects. In addition, it can also take into account its own rigidity and the required elastic changes.

1: Contact shrapnel structure

10: Shrapnel components

101: The first piece

1011: The first convex arc bending part

1012: The first mounting hole

1013: first assembly hole

102: second piece

1021: Second convex arc bending part

1022: second mounting hole

1023: second assembly hole

103: The third piece

1031: Third mounting hole

1032: Third assembly hole

104: The fourth piece

1041: fixed segment

1042: elastic segment

1043: Fourth mounting hole

1044: groove

11: Contact structure

20: rotating bridge

201: The first turn

202: second turn

21: fixed contact piece

22: Extension arm

A: Conventional shrapnel structure

B: fixed contact

C: Contacts on the structure of the conventional shrapnel

Figure 1 is an exploded schematic diagram of an embodiment of the present invention.

FIG. 2A is a schematic diagram of the assembly of the contact shrapnel structure according to an embodiment of the present invention.

FIG. 2B is a schematic diagram of the assembly of the contact shrapnel structure from another perspective according to an embodiment of the present invention.

Figure 3 is a schematic diagram (1) of the application of the contact shrapnel structure according to an embodiment of the present invention.

Figure 4 is a schematic diagram (2) of the application of the contact shrapnel structure according to an embodiment of the present invention.

Figure 5 is a partial application schematic diagram of the conventional shrapnel structure.

FIG. 6 is a partial exploded schematic view of a contact spring structure according to another embodiment of the present invention.

FIG. 7 is a schematic diagram of an assembly of a contact spring structure according to another embodiment of the present invention.

FIG. 8 is a schematic diagram of the fourth sheet structure of an embodiment of the present invention.

In order to enable those with ordinary knowledge in the field to clearly understand the content of the present invention, please refer to the following description and drawings.

Please refer to Figures 1, 2A, 2B, 3, and 4, which are an exploded schematic diagram, an assembly diagram, an assembly diagram from another perspective, and an application diagram (1), (2) of the contact shrapnel structure according to an embodiment of the present invention. The present invention discloses a contact shrapnel structure 1 of an electromagnetic relay, including: at least one shrapnel assembly 10 and at least one contact structure 11. The elastic sheet assembly 10 includes a first sheet 101, a second sheet 102, a third sheet 103, and a fourth sheet 104. The first sheet 101 has a first convex curved portion 1011, In addition, a first mounting hole 1012 is defined at one end of the first sheet body 101. The second sheet body 102 is stacked under the first sheet body 101 and fixed to the first sheet body 101. The second sheet body 102 has a second convex curved portion 1021, and one end is opened with the The first mounting hole 1012 corresponds to a second mounting hole 1022, wherein the second convex arc bending portion 1021 is disposed under the first convex arc bending portion 1011 with a gap therebetween. The third piece 103 is stacked under the second piece 102 and fixed to the second piece 102. One end of the third piece 103 is provided with a third corresponding to the second mounting hole 1022. Mounting hole 1031. The fourth piece 104 is stacked under the third piece 103. The fourth piece 104 has a fixed section 1041 and an elastic section 1042. The fixed section 1041 is provided with a corresponding third mounting hole 1031. A fourth mounting hole 1043, and the fourth piece 104 is provided with a plurality of grooves 1044, wherein the fixing section 1041 and the third piece 103 are fixed to each other, and the elastic section 1042 is not connected to the third piece The bodies 103 are fixed to each other. The contact structure 11 is fixed through the first mounting hole 1012, the second mounting hole 1022, the third mounting hole 1031, and the fourth mounting hole 1043. Wherein, preferably, the first sheet 101, the second sheet 102, and the third sheet 103 can be made of copper material, and the fourth sheet 104 can be made of stainless steel.

Thereby, the present invention effectively adjusts the elastic performance of the elastic piece after being stressed, so that the contact elastic piece structure 1 has an appropriate force and deformation relationship, so as to optimize the contact structure 11 and the contact structure 11 of the contact elastic piece structure 1 The effect of the contact pressing force of the other contact. Through the aforementioned structural features, the relationship between the force and the deformation of the contact shrapnel structure 1 can show that the amount of deformation gradually increases according to the increasing force, and the force is As it becomes smaller, the relative relationship of the contact shrapnel structure 1 gradually recovers, and it is not easy to cause the problem of irreversibility due to the continuous large deformation of the contact shrapnel structure. The force strength of the contact shrapnel structure shows a positive direction relative to the deformation variable relationship. The linear change characteristic is close to the ideal relationship state of spring force deformation. And this can avoid the situation that the structure rigidity is too strong and the force is very large but only a little deformation can not be smoothly contacted with another contact, and it can avoid the loss of the elastic sheet that can no longer be restored after a large deformation in an instant; or avoid the structure rigidity being too small and The contact structure 11 is brought into contact with another contact to form a phenomenon of high temperature operation and unstable resistance value caused by incomplete contact contact. Accordingly, it is possible to effectively increase the pressing force of the contact shrapnel structure 1 in application within the limited space of the electromagnetic relay, thereby avoiding problems such as excessive use temperature or excessive resistance change caused by incomplete contact contact. More specifically, the fourth piece 104 of the contact elastic piece structure 1 has the fixed section 1041, the elastic section 1042, and the grooves 1044, and the fixed section 1041 is connected to the third piece 103 The area fixed to each other, so that the elastic section 1042 and the grooves 1044 can provide elastic deformation of the contact spring structure 1 during application, improve the contact force between the contact structure 11 and another contact, and allow The relationship between the force strength of the contact shrapnel structure 1 and the deformation amount is close to a positive linear change characteristic. Further, by opening the grooves 1044 to form a ribbed structure on the fourth sheet 104, the resisting pressure can be evenly distributed to the position of the contact structure 11, and the force generated during actuation is avoided. The phenomenon of local warping or skewing can improve the contact stability between the contact structure 11 and another contact.

The contact shrapnel structure 1 can be used as a movable shrapnel in all kinds of electromagnetic relays to be driven and displaced in response to electromagnetic action, and then contact or disconnect with another contact, so as to control the electrical opening and closing of the electromagnetic relay. effect. In an electromagnetic relay, the contact shrapnel structure 1 can be arranged in a single group or multiple groups. Please refer to Figures 3 and 4, which is a simple internal structure of the electromagnetic relay. In this embodiment, As an example, an electromagnetic relay is provided with two sets of application methods of the contact shrapnel structure 1. The electromagnetic relay can be provided with a rotating bridge 20, two fixed contact pieces 21 and two extension arms 22, the rotating bridge 20 has There are a first rotating piece 201 and a second rotating piece 202 extending outwardly from opposite sides of the rotating bridge 20, and used to control the contact shrapnel structures 1. The first rotating piece 201 is connected to any one of the One end of the extension arm 22 is fixedly arranged, any one of the contact spring structure 1 is connected to the other end of the one extension arm 22; the second rotating piece 202 is fixedly arranged with the other extension arm 22, and the other The contact spring structure 1 is connected to the other end of the extension arm 22. The fixed contact pieces 21 are respectively arranged corresponding to the contact elastic piece structures 1. When the rotating bridge 20 is moved by electromagnetic action, it can simultaneously drive the contact structures 11 of the contact shrapnel structures 1 to contact or disconnect with the contacts on the fixed contact plates 21, by This controls the electrical state of the electromagnetic relay.

Please refer to Fig. 5 together, which is a partial application diagram of the conventional shrapnel structure. When the conventional shrapnel structure A has a three-piece structure as shown in the figure, and it is in contact with the fixed contact B under force, since the conventional shrapnel structure A does not have a structure for adjusting the elastic force, it is subject to When the force moves in the direction of the fixed contact B, it will be easily deformed and warped due to the instantaneous force. On the contrary, the contact C and the fixed contact B on the conventional shrapnel structure will form an incomplete contact state, resulting in high temperature and The problem of unstable resistance is shown in Figure 5. Returning to the present invention, Figure 3 shows the contact spring structure 1 not in contact with the contacts of the fixed contact plates 21, and Figure 4 shows the contact spring structure 1 due to the rotating bridge 20. The state of moving and contacting the contacts of the fixed contact pieces 21, through the fourth piece 104 structure of the contact elastic piece structure 1, the contact elastic piece structure 1 can have more Good elastic performance, due to the design of the elastic section 1042 and the fixed section 1041, the force can be transmitted to the area where the contact structures 11 are provided, and the contact between it and the fixed contact piece 21 can be moved accordingly Contact, so that the contact shrapnel structures will not produce partial warpage that leads to incomplete contact contact, so that the contact structures 11 can reliably form stable contact with the contacts of the fixed contact plates 21 The state. In addition, as mentioned above, through the structural design of opening the grooves 1044 in the fourth sheet 104, the adjacent grooves and the inter-groove shape Formed into front ribs, central ribs and rear ribs, so that the pressure it bears can be evenly distributed to the front of the contact structure 11, around the contact structure 11, and behind the contact structure 11, thereby avoiding local warping Or the phenomenon of skew improves the contact stability between the contact structure 11 and another contact.

In one embodiment, the grooves 1044 on the fourth sheet 104 can be elongated, and the extending directions of the grooves 1044 are parallel to each other, so that the contact elastic sheet structure 1 can be held in Appropriate application presents and enhances the stability of operation. Further, the arrangement of the grooves 1044 can extend from the periphery of the fourth mounting hole 1043 toward the elastic section 1042, so that the distribution of the grooves 1044 does not exceed that of the fourth mounting hole 1043. In order to avoid affecting the operation of the contact structure 11, it also ensures the rigidity of the fourth sheet 104, and prevents the contact structure 11 from being too soft and too easily deformed to cause insufficient contact. When the number of the grooves 1044 is an odd number, the opening area of the groove 1044 in the middle position is larger than the opening area of the grooves 1044 on both sides, so that the fourth sheet 104 has a better opening area. The uniform and symmetrical force state helps to improve the force deformation state of the contact shrapnel structure 1 so as to have more excellent performance in application. In this embodiment, the number of the grooves 1044 is five as an example, in order to combine the rigidity and deformation elasticity of the entire sheet body, as shown in Figure 1 or Figure 2B, the fourth sheet body 104 can be seen Five grooves 1044 are opened on the upper side, and the opening area of the groove 1044 at the middle position is larger than the opening area of the remaining grooves 1044 on both sides. At the same time, the grooves 1044 are elongated and parallel to each other, and the ends of the grooves 1044 do not exceed the fourth mounting hole 1043 to avoid affecting the contact structure 11.

In addition, in another embodiment, at least one of the grooves 1044 is adjacent to the end of the fourth mounting hole 1043, and is inclined or arc-shaped corresponding to the periphery of the fourth mounting hole 1043, so as to fit the fourth mounting hole 1043 accordingly. The hole 1043 means that the contact structure 11 keeps a certain distance, and at the same time, the shape of the contact structure 11 is changed to meet the requirements by the inclined or arc-shaped end edge structure.

In order to facilitate fixing the contact spring structure 1 in an electromagnetic relay, preferably, at least one first set of contact holes 1013 is provided at the other end of the first sheet body 101 opposite to the first mounting hole 1012. The second piece 102 is provided with at least one second set of contact holes 1023 at the opposite end of the second mounting hole 1022, and the third piece 103 is provided with at least A third set of contact holes 1032, and the first set of contact holes 1013, the second set of contact holes 1023, and the third set of contact holes 1032 correspond to and communicate with each other, so that the contact spring structure 1 has the first set The terminals of the contact holes 1013, the second set of contact holes 1023, and the third set of contact holes 1032 are fixedly assembled and electrically connected to the terminal circuit of the electromagnetic relay. At the same time, the contact spring structure 1 is provided with the contact The end of the structure 11 can be driven to move.

Please refer to FIGS. 3, 4, 6 and 7 together. FIGS. 6 and 7 are respectively an exploded schematic diagram and a schematic assembly diagram of a contact spring structure according to another embodiment of the present invention. In this embodiment, the number of the elastic piece assembly 10 of the contact elastic piece structure 1 is two, and the two elastic piece assemblies 10 are arranged side by side in parallel at an interval, and the two elastic piece assemblies 10 are not provided with the The other ends of the contact structure 11 are fixed to each other. The contact shrapnel structure 1 can not only have a single contact type, but also can be arranged in two groups as shown in Figures 6 and 7, so that it can be applied to a double contact type electromagnetic relay. The two elastic pieces 10 have the interval to avoid contact with each other and affect the electrical conduction state. Regarding the detailed structure of the single shrapnel assembly 10, please refer to FIG. 1 for multiple combinations.

Furthermore, the side of the end of each elastic piece assembly 10 provided with the contact structure 11 can be in a gradually expanding stepped state, which can further prevent the two elastic piece assemblies 10 from being too close to cause various kinds of poor electrical conduction. Phenomenon occurs. Referring to FIGS. 6 and 7, it can be seen that through the aforementioned gradual stepped structure configuration, the elastic sheet components 10 can form a larger gap at the end adjacent to the contact structure 11 to avoid mutual interference.

Similarly, when there are two shrapnel assemblies 10, the aforementioned additional detailed technical features are also applicable here. For example, the grooves 1044 on the fourth piece 104 of each shrapnel assembly 10 can each be used. The grooves 1044 are elongated, and the extending directions of the grooves 1044 are parallel to each other. The grooves 1044 can also start from the periphery of the fourth mounting hole 1043 corresponding to the elastic section. Extend in the direction of 1042; when the number of grooves 1044 is an odd number, the opening area of the groove 1044 in the middle position is larger than the opening area of the grooves 1044 on both sides, and in this embodiment The number of grooves 1044 is five; and at least one of the grooves 1044 is adjacent to the end of the fourth mounting hole 1043, which is inclined or arc-shaped corresponding to the periphery of the fourth mounting hole 1043. Related detailed descriptions and corresponding functions are already mentioned above, please refer to the corresponding content again.

In application, as shown in Figures 3 and 4, it is the same as the structure with a single dome assembly 10. The contact dome structure 1 with two dome assemblies 10 is provided in an electromagnetic relay, and It can also be arranged in a single group or multiple groups. Each contact spring structure 1 is driven by the first rotating piece 201 and the second rotating piece 202 of the rotating bridge 20 through the extending arm 22 structure, so that The two contact structures 11 on each contact spring structure 1 are in contact with or disconnected from the contacts on the corresponding fixed contact plate 21. For detailed operation descriptions, please refer to the content of the corresponding paragraphs above. This will not be repeated here.

Please refer to FIG. 8, which is a schematic diagram of the fourth sheet structure of an embodiment of the present invention. The grooves 1044 of the fourth piece 104, in addition to the parallel elongated structure as described above, can also be arranged to start from the periphery of the fourth mounting hole 1043 and radiate toward the elastic section 1042. The state of the status setting is shown in Figure 8. Thereby, the contact elastic piece structure 1 can also be provided with a better deformed state, so as to prevent excessive rigidity from affecting the operation of the contact structure 11.

In summary, the contact shrapnel structure 1 of the present invention, through the above technical features, effectively improves the force performance of the shrapnel, so that the force strength and the deformation relationship of the contact shrapnel structure 1 tend to be close to positive. The ideal state of change to linearity, and in the limited space of the electromagnetic relay, can increase the pressing force when the contacts are in contact, eliminate the excessive change in the resistance value, and make the conductive circuit more stable. At the same time, the present invention also has a more excellent operation Smoothness. More specifically, through the arrangement of the fourth piece 104 and its elastic section 1042, the fixed section 1041 and the groove 1044, it can have a better displacement smoothness during operation, and make the contact structure 11 and the relay Correspondingly, the pressing force when the other contact is in contact with each other can be improved. Relatively, this can also increase the durability of the contact opening and closing. Further, considering various requirements during actual operation, the present invention also proposes the detailed arrangement of the grooves on the fourth sheet 104, so that the fourth sheet 104 can effectively achieve In addition to the aforementioned effects, it can also take into account the rigidity and the required elastic changes.

However, the above are only the preferred embodiments of the present invention, and are not used to limit the scope of implementation of the present invention; therefore, equal changes and modifications made without departing from the scope of the present invention should be covered by the present invention Within the scope of the patent.

1: Contact shrapnel structure

10: Shrapnel components

101: The first piece

1011: The first convex arc bending part

1012: The first mounting hole

1013: first assembly hole

102: second piece

1021: Second convex arc bending part

1022: second mounting hole

1023: second assembly hole

103: The third piece

1031: Third mounting hole

1032: Third assembly hole

104: The fourth piece

1041: fixed segment

1042: elastic segment

1043: Fourth mounting hole

1044: groove

11: Contact structure

Claims (10)

A contact shrapnel structure of an electromagnetic relay, comprising: at least one shrapnel assembly, comprising: a first piece body having a first convex curved portion, and one end of the first piece body is provided with a first mounting hole; The second sheet is stacked under the first sheet and fixed to the first sheet. The second sheet has a second convex arc bending portion, and one end is provided with a corresponding first mounting hole A second mounting hole; wherein the second convex arc bending portion is disposed below the first convex arc bending portion with a gap between each other; a third piece body is stacked under the second piece body and Fixed to the second sheet body, one end of the third sheet body is provided with a third mounting hole corresponding to the second mounting hole; and a fourth sheet body stacked under the third sheet body, the The fourth piece has a fixed section and an elastic section, the fixed section is provided with a fourth mounting hole corresponding to the third mounting hole, and the fourth piece is provided with a plurality of grooves; wherein, the fixed section Is fixed to the third sheet body, while the elastic section is not fixed to the third sheet body; and at least one contact structure is penetrated and fixed to the first mounting hole, the second mounting hole, and the third mounting hole. The mounting hole and the fourth mounting hole. The contact shrapnel structure according to claim 1, wherein the grooves are elongated, and the extending directions of the grooves are parallel to each other. The contact elastic piece structure according to claim 2, wherein the grooves extend from the periphery of the fourth mounting hole in the direction of the elastic section. The contact shrapnel structure according to claim 3, wherein when the number of the grooves is an odd number, the opening area of the groove at the middle position is larger than the opening area of the grooves on both sides. The contact shrapnel structure according to claim 3, wherein the number of the grooves is five. The contact spring structure according to claim 1, wherein the grooves start from the periphery of the fourth mounting hole and are radially arranged in the direction of the elastic section. The contact spring structure according to claim 1, wherein at least one of the grooves adjacent to the end of the fourth mounting hole is inclined or arc-shaped corresponding to the periphery of the fourth mounting hole. According to the contact spring structure according to any one of claims 1 to 7, wherein the other end of the first sheet body opposite to the first mounting hole is provided with at least one first set of contact holes, and the second The other end of the sheet body opposite to the second mounting hole is provided with at least one second set of connecting holes, and the other end of the third sheet body opposite to the other end of the third mounting hole is provided with at least one third set of connecting holes, and The first set of contact holes, the second set of contact holes, and the third set of contact holes correspond to and communicate with each other. The contact shrapnel structure according to claim 8, wherein the number of shrapnel components is two, and the two shrapnel components are arranged side by side at an interval, and the contact structure is not provided in the two shrapnel components The other end is fixed to each other. The contact shrapnel structure according to claim 9, wherein the side of the shrapnel assembly with the end of the contact structure is in a gradually expanding stepped state.

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