JP7166379B2 - Electromagnetic relay contact elastic piece structure - Google Patents

Description

TECHNICAL FIELD The present invention relates to the field of relays, and more particularly to a contact elastic piece structure applied to electromagnetic relays.

A relay, also known as a "relay", is an electronic control component. When classified based on the principle of operation, they are broadly classified into optical relays, electromagnetic relays, thermal relays, and the like.

Taking an electromagnetic relay as an example, it generally has an electromagnetic coil, a movable contact, and a fixed contact inside it, and a control circuit is connected to the fixed contact outwardly to energize the electromagnetic coil. Afterwards, as the movable contact is displaced according to the electromagnetic action of the electromagnetic coil, it achieves the purpose of controlling the electrical opening and closing. The movable contact is generally mounted on a movable elastic piece, and along with this, the movable contact to be interlocked is moved to connect or disconnect with the fixed contact. In some models of relays, there is also a method of designing the movable elastic piece to have a three-piece structure in view of considerations such as movement demand. The moveable elastic piece structure described above includes three pieces, and perforations are opened on the pieces to facilitate mounting of the contact structure, but the moveable elastic piece can be moved as a single piece. Although it has a better expression than the single body, the rigidity is too strong, so the elasticity expression after receiving pressure is insufficient, and the stability of the contact strength of the contact is uncertain. Due to imperfect contact between the two, high temperature or unstable electrical resistance tends to occur, and as a result, a large amount of deformation occurs instantaneously, resulting in rupture or irrecoverable damage.

An object of the present invention is to provide a contact elastic piece structure for an electromagnetic relay, which can greatly increase the contact pressing force and stability when the fixed contacts and the movable contacts contact each other in the electromagnetic relay.

To achieve the above object, a contact elastic piece structure for an electromagnetic relay according to the present invention includes at least one elastic piece assembly and at least one contact structure, wherein the elastic piece assembly comprises a first piece a second piece stacked below the first piece and mutually fixed with the first piece; and a second piece stacked below the second piece and mutually fixed with the second piece. and a fourth piece stacked below said third piece, wherein one end of said first piece having a first convex arc bend has a first mounting hole. and a second mounting hole corresponding to the first mounting hole is formed in one end of the second piece having a second convex arc bend, wherein the second convex arc bend is formed by the first convex installed below the arc bending part, the first convex arc bending part and the second convex arc bending part having a gap therebetween, and the second mounting hole at one end of the third piece; and the fourth piece has a fixed joint fixed to the third piece and an elastic joint not fixed to the third piece. and a fourth mounting hole corresponding to the third mounting hole is formed in the fixed joint, and a plurality of slits are provided in the fourth piece, and the contact structure includes the first mounting hole and the second mounting hole. It penetrates and is fixed to the mounting hole, the third mounting hole and the fourth mounting hole. As a result, the contact elastic piece structure of the present invention can provide an appropriate structural stress deformation state, so that it can provide stable operation smoothness in the limited space of the relay, and effectively improve the operation performance and reliability of the relay. to achieve an increase in

Summarizing the above, the contact elastic piece structure of the present invention has the above-described technical characteristics, and effectively improves the expression of stress in the elastic piece. is close to the ideal positive linear change state, it is possible to improve the pressing force when the contacts contact in the limited space of the electromagnetic relay, and eliminate excessive changes in the electrical resistance value. While the conductive circuit can be made more stable, the present invention can also have better operational smoothness. More specifically, by installing the fourth piece and its elastic joints, fixed joints and slits, it has a more suitable displacement smoothness during operation, and the contact structure and the corresponding other contacts in the relay are combined. It is possible to improve the pressing force when contacting each other, and conversely, in this way, it is also possible to increase the durability of the contact switch. Furthermore, considering each item requirement during actual operation, the present invention also proposes a detailed installation mode on the fourth piece for a plurality of the slits, based on which the fourth piece is: In addition to being able to effectively achieve the aforementioned effects, it is also possible to have both its own rigidity and required elastic change.

1 is an exploded schematic diagram of a contact elastic piece structure according to an embodiment of the present invention; FIG. FIG. 4 is an assembly schematic diagram of a contact elastic piece structure according to one embodiment of the present invention; FIG. 4 is a schematic view of assembling the contact elastic piece structure of the embodiment of the present invention from another viewing angle; FIG. 1 is an application schematic diagram (1) of a contact elastic piece structure according to an embodiment of the present invention; FIG. 2 is an application schematic view (2) of the contact spring structure according to an embodiment of the present invention; 1 is a partial application schematic diagram of a conventional elastic piece structure; FIG. FIG. 4 is a partially exploded schematic diagram of a contact elastic piece structure of another aspect of one embodiment of the present invention; FIG. 4 is an assembly schematic diagram of the contact elastic piece structure of another embodiment of the embodiment of the present invention; FIG. 4 is a structural schematic diagram of a fourth piece of the next embodiment of an embodiment of the present invention;

Please refer to FIGS. 1, 2A, 2B, 3 and 4. FIG. These are an exploded schematic diagram of the contact elastic piece structure of one embodiment of the present invention, a schematic assembly diagram of the same structure, a schematic assembly diagram of the same structure from another viewing angle, an application schematic diagram (1) and an application schematic diagram of the same structure. (2). A contact elastic piece structure 1 for an electromagnetic relay disclosed in the present invention comprises at least one elastic piece assembly 10 and at least one contact structure 11 . The elastic piece assembly 10 includes a first piece 101, a second piece 102, a third piece 103, and a fourth piece 104. The first piece 101 is a first convex arc bend. 1011 , and a first mounting hole 1012 is opened at one end of the first piece 101 . The second piece 102 is stacked below the first piece 101 and fixed to each other with the first piece 101, the second piece 102 has a second convex arc bent portion 1021 and one end , a second mounting hole 1022 corresponding to the first mounting hole 1012 is opened, in which the second convex arc refraction part 1021 is installed below the first convex arc refraction part 1011 and the first convex arc refraction part 1011 The portion 1011 and the second convex arc bending portion 1021 have a gap therebetween. The third piece 103 is stacked below the second piece 102 and fixed to each other with the second piece 102 , and a third mounting hole 1022 corresponding to the second mounting hole 1022 at one end of the third piece 103 . A hole 1031 is opened. The fourth piece 104 is stacked below the third piece 103, the fourth piece 104 has a fixed joint 1041 and an elastic joint 1042, and the fixed joint 1041 corresponds to the third mounting hole 1031. and a plurality of slits 1044 are provided in the fourth piece 104, wherein the fixed joint 1041 is fixed to the third piece 103, and the elastic joint 1042 is fixed to the third piece 103. It is not fixed to the three-piece body 103 and 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 . Among them, more preferably, the first piece 101, the second piece 102 and the third piece 103 can be made of, for example, copper material, and the fourth piece 104 is made of stainless steel material. can be produced in

Thus, according to the present invention, by effectively adjusting the expression of elasticity after the elastic piece receives pressure, the contact elastic piece structure 1 can have an appropriate relationship between stress and deformation. The effect of optimizing the expression of the contact pressing force between the contact structure 11 and another contact is obtained. According to the structural characteristics described above, the relationship between stress and deformation of the contact elastic piece structure 1 is such that when the acting force (applied pressure) gradually increases, the amount of deformation gradually increases, and when the stress (applied pressure) gradually decreases, , there is a relative relationship in which the contact elastic piece structure 1 gradually recovers, and since it continues to receive pressure continuously, it is possible to make it difficult to cause the problem of irrecoverable due to momentary large deformation, and the contact elastic piece structure 1 A characteristic that makes the relationship between the stress intensity of the structure 1 and the amount of deformation close to a positive linear change is brought out, and the ideal relationship state of the spring stress deformation is brought closer. And because of this, the rigidity of the structure is very strong, so that even if the acting force is maximized, only a small amount of deformation occurs, so that it is possible to avoid the situation where it is not possible to make good contact with another contact, and the elastic piece has a momentary large or, if the rigidity of the structure is too low, the contact structure 11 can be brought into contact with another contact and the contact contact is imperfectly formed. It can avoid the high temperature operation and the unstable phenomenon of electrical resistance value. Therefore, since the pressing force when applying the contact elastic piece structure 1 to the limited space of the electromagnetic relay can be effectively improved, it is possible to prevent excessive changes in the electrical resistance value and excessively high operating temperature caused by imperfect contact of the contacts. It is achieved to avoid problems such as More specifically, the fourth piece 104 of the contact elastic piece structure 1 has a fixed joint 1041, an elastic joint 1042 and a plurality of slits 1044, and the fixed joint 1041 and the third piece 103 are interconnected. In this way, the contact elastic piece structure 1 can be elastically deformed during application through the elastic node 1042 and the plurality of slits 1044, so that the contact structure 11 can be connected to another contact. The contact force is improved, and the relationship between the stress intensity of the contact elastic piece structure 1 and the amount of deformation exhibits characteristics that approach a positive linear change. In addition, the formation of a ribbed structure relative to the fourth piece 104 by opening a plurality of said slits 1044 can evenly distribute the resistive pressure applied to the position of the contact structure 11, resulting in an actuation. It is possible to avoid the phenomena of partial warpage and distortion that occur under stress, and to increase the contact stability between the contact structure 11 and another contact.

The contact elastic piece structure 1 can be applied in various electromagnetic relays and used as a movable elastic piece. The contact provides the effect of controlling the electrical opening and closing of the electromagnetic relay. In the electromagnetic relay, the contact elastic piece structure 1 may be single set or multiple set installation. Here, FIGS. 3 and 4 show schematics of the internal structure of a simple electromagnetic relay, and in this embodiment, an application method in which two sets of contact elastic piece structures 1 are provided in an electromagnetic relay is exemplified. described as. A rotating bridge 20, two fixed contact pieces 21 and two extension arms 22 may be provided in the electromagnetic relay, the rotating bridge 20 extending outward from opposite sides of the rotating bridge 20. It has a first rotating piece 201 and a second rotating piece 202 and is used to control a plurality of contact elastic piece structures 1 . Any one contact elastic piece structure 1 is connected to the other end of the extension arm 22, the second rotating piece 202 is connected to the separate extension arm 22, Another contact elastic piece structure 1 is connected to the other end of this extension arm 22 . A plurality of fixed contact pieces 21 are installed corresponding to the plurality of contact elastic piece structures 1, respectively. When the rotating bridge 20 is moved by electromagnetic action, the plurality of contact structures 11 of the plurality of contact elastic piece structures 1 can be synchronously interlocked accordingly, so that the contacts on the plurality of fixed contact pieces 21 are connected. The electrical state of the electromagnetic relay is controlled by making contact or disconnection.

Also refer to FIG. 5, which is a partial application schematic diagram of a conventional elastic piece structure. When the conventional elastic piece structure A has a three-layer structure as shown in the drawing and contacts with the fixed contact B under pressure, the conventional elastic piece structure A has a structure for adjusting the elastic stress. Therefore, once it receives pressure and moves in the direction of the fixed contact B, it is likely to undergo a large warp deformation due to the momentary acting force. The problem of high temperature or unstable electrical resistance due to imperfect contact with contact B is shown in FIG. Returning to the present invention, FIG. 3 shows the plurality of contact elastic strip structures 1 not in contact with the contacts of the plurality of stationary contact strips 21, and FIG. 4 shows the multiple contact spring structure. 1 can come into contact with the contacts of a plurality of fixed contact pieces 21 according to the movement of the rotating bridge 20, and the structure of the fourth piece 104 of the plurality of contact elastic piece structures 1 allows the plurality of contact elastic pieces to contact. When the piece structure 1 is subjected to pressure, it can have a better elastic expression, and according to the design of the elastic joint 1042 and the fixed joint 1041, the received pressure can be distributed to the section where the multiple contact structures 11 are provided. In this way, the plurality of elastic contact piece structures 1 can be partially bent to prevent imperfect contact of the contacts caused by warpage. Therefore, the plurality of contact structures 11 can be reliably formed in a stable contact state with the contacts of the plurality of fixed contact pieces 21 . In addition, as described above, according to the structural design in which a plurality of slits 1044 are formed in the fourth piece 104, front ribs, central ribs and rear ribs are formed between adjacent slits 1044. and the resistive pressure applied to it can be evenly distributed to positions such as the front of the contact structure 11, the periphery of the contact structure 11 and the rear of the contact structure 11, thus avoiding the phenomenon of partial warpage and distortion. and the contact stability between the contact structure 11 and another contact can be increased.

In one embodiment, the plurality of slits 1044 on the fourth piece 104 may be elongated, and the extending direction of each slit 1044 is parallel to each other, thus forming a contact The elastic piece structure 1 can be held in an appropriate application presentation representation, and operational stability can be improved. Furthermore, the array of the plurality of slits 1044 may start from the periphery of the fourth mounting hole 1043 and extend toward the direction of the elastic node 1042. In this way, the distribution of the plurality of slits 1044 may be A condition is presented to prevent the fourth mounting hole 1043 from being exceeded, which can avoid affecting the operation of the contact structure 11, and at the same time ensure the rigidity of the fourth piece 104, which is too soft. Insufficient degree of contact of the contact structure 11 due to easy deformation can be avoided. In addition, when the number of the plurality of slits 1044 is an odd number, the opening area of the slit 1044 positioned at the middle position is larger than the opening area of each of the plurality of slits 1044 on both sides. The strip 104 has a more uniform and symmetrical stress state, which helps improve the stress deformation state of the contact elastic strip structure 1 and has better performance in application. In the present embodiment, the number of the plurality of slits 1044 is described as five as an example. It can be seen that five slits 1044 are formed on the body 104, and the opening area of the slit 1044 located at the middle position is larger than the opening area of the other plurality of slits 1044 on both sides. At the same time, the plurality of slits 1044 are each elongated and parallel to each other, and in order to avoid affecting the contact structure 11, the ends of the plurality of slits 1044 are all attached to the fourth attachment. Do not exceed hole 1043 .

In addition, in another embodiment, the edge adjacent to the fourth mounting hole 1043 of the at least one slit 1044 is slanted or arcuate corresponding to the circumference of the fourth mounting hole 1043. , the fourth mounting hole 1043, that is, the contact structure 11, is kept at a certain distance, and the slanted or arc-shaped edge structure allows the deformation under pressure to meet the needs more. becomes.

In order to easily fix the contact elastic piece structure 1 in the electromagnetic relay, more preferably, at least one first contact piece structure 101 is provided at the other end of the first piece 101 opposite to the one end where the first mounting hole 1012 is provided. One assembly hole 1013 is provided, and at least one second assembly hole 1023 is provided at the other end of the second piece 102 opposite to the one end where the second attachment hole 1022 is provided. At least one third assembly hole 1032 is provided at the other end opposite to the one end provided with the third attachment hole 1031, and the first assembly hole 1013, the second assembly hole 1023 and the third assembly hole 1032 are provided. correspond to each other and communicate with each other, the ends of the elastic contact piece structure 1 having the first assembly hole 1013, the second assembly hole 1023 and the third assembly hole 1032 are connected to the electromagnetic relay. While being fixedly assembled with the terminal circuit and exhibiting the state of electrical continuity, the end of the contact elastic piece structure 1 on which the contact structure 11 is installed can be displaced in conjunction therewith.

3, 4, 6 and 7 are also referred to. 6 and 7 are an exploded schematic view and an assembled schematic view of the contact elastic piece structure of another embodiment of one embodiment of the present invention, respectively. In this embodiment, the number of the elastic piece assemblies 10 of the contact elastic piece structure 1 is two, and the two elastic piece assemblies 10 are provided in parallel with each other with a space therebetween. The other ends of 10 not provided with contact structure 11 are provided fixed to each other. The contact elastic piece structure 1 may be in the form of having a single contact, or may be in the form of two sets of installations, such as the structural mode shown in FIGS. , can be applied in a double contact type electromagnetic relay. In addition, since the two elastic piece assemblies 10 are spaced apart, it is possible to avoid contacting each other and affecting the electrical continuity. Also, referring again to FIG. 1, the detailed structure of the single elastic piece assembly 10 will be described.

Furthermore, one side of each elastic piece assembly 10 on which the contact structure 11 is provided may be in the shape of a gradually widening step. If it is too large, it can further prevent the occurrence of various poor electrical conduction phenomena. Referring to FIGS. 6 and 7, according to the above-described gradually widening stepped structure, a relatively large gap is formed at the ends adjacent to the contact structure 11 of the plurality of elastic strip assemblies 10 to prevent mutual interference. It can be seen that the influence of

Similarly, the number of elastic piece assemblies 10 is two, and the detailed technical features that can be added to each of the previous sections are also applicable here, and on the fourth piece 104 of each elastic piece assembly 10 Taking the plurality of slits 1044 as an example, for example, each slit 1044 may be elongated, and the extending directions of each slit 1044 may be implemented in a parallel structural manner. Also, the plurality of slits 1044 may extend toward the elastic node 1042 from the periphery of the corresponding fourth attachment hole 1043 as a starting point. When the number of the plurality of slits 1044 is an odd number, the opening area of the slit 1044 located in the middle position is larger than the opening area of each of the plurality of slits 1044 on both sides, and in this embodiment, The number of the plurality of slits 1044 is five, and the edge of at least one of the slits 1044 adjacent to the fourth mounting hole 1043 is sloped or arcuate corresponding to the periphery of the fourth mounting hole 1043. is presenting. The related details and corresponding effects have already been mentioned above, so please refer to the corresponding content again.

Please refer to FIGS. 3 and 4 again. In application, the structure is similar to that provided with a single elastic piece assembly 10, and the contact elastic piece structure 1 with two elastic piece assemblies 10 is provided for installation in an electromagnetic relay. At the same time, it can also be a single set or multiple set installation, and each contact elastic piece structure 1 can be connected to the first pivot piece 201 and the second pivot piece of the rotating bridge 20 by the structure of a plurality of extension arms 22. In response to the interlocking of 202, the two contact structures 11 on each contact elastic piece structure 1 and the contacts on the corresponding fixed contact piece 21 may contact or disconnect each other. For the detailed working description, please refer to the contents of the corresponding paragraphs above, and the detailed description is omitted here.

Please refer to FIG. 8, which is a structural schematic diagram of the fourth piece of the next embodiment of an embodiment of the present invention. The plurality of slits 1044 of the fourth piece 104 have a parallel elongated structure as described above, and are provided radially toward the elastic node 1042 from the periphery of the fourth mounting hole 1043 as a starting point. , see FIG. As a result, the contact elastic piece structure 1 is provided with a more preferable deformation state, so that it is possible to prevent the contact structure 11 from being affected by excessive rigidity.

In summary, according to the above technical features, the elastic contact piece structure 1 of the present invention effectively improves the expression of stress in the elastic piece, thereby improving the stress strength and the amount of deformation of the elastic contact piece structure 1. Since the relationship is brought closer to a positive linear ideal change state, it is possible to improve the pressing force when the contacts contact in the limited space of the electromagnetic relay, and eliminate excessive changes in the electrical resistance value. , the conductive circuit can be made more stable, and at the same time, the present invention can also have better operation smoothness. More specifically, by installing the fourth piece 104 and its elastic joints 1042, fixed joints 1041 and slits 1044, it has a more suitable displacement smoothness during operation, and the contact structure 11 and the corresponding different It is possible to improve the pressing force when bringing the contacts into contact with each other, and conversely, in this way, it is also possible to increase the durability of the contact switch. In addition, considering the requirements of each item during actual operation, the present invention also proposes a detailed installation mode on the fourth piece 104 for the plurality of slits 1044. Based on this, the fourth piece 104 is In addition to being able to effectively achieve the aforementioned effects, it is also possible to have both its own rigidity and the required elastic change.

1 Contact elastic piece structure 10 Elastic piece assembly 101 First piece 1011 First convex arc bent portion 1012 First mounting hole 1013 First assembly hole 102 Second piece 1021 Second convex arc bent portion 1022 Second mounting hole 1023 Second mounting hole 103 Third piece 1031 Third mounting hole 1032 Third mounting hole 104 Fourth piece 1041 Fixed joint 1042 Elastic joint 1043 Fourth mounting hole 1044 Slit 11 Contact structure 20 Rotating bridge 201 First time Moving piece 202 Second rotating piece 21 Fixed contact piece 22 Extension arm A Conventional elastic piece structure B Fixed contact C Contact on conventional elastic piece structure

Claims (8)

A contact elastic piece structure for an electromagnetic relay comprising at least one elastic piece assembly and at least one contact structure,
The elastic strip assembly comprises a first strip, a second strip stacked below the first strip and secured to each other with the first strip, and an elastic strip below the second strip. a third piece stacked and secured to each other with said second piece, and a fourth piece stacked below said third piece;
A first mounting hole is opened at one end of the first piece having the first convex arc bent portion,
A second mounting hole corresponding to the first mounting hole is formed in one end of the second piece having the second convex arc bend, the first convex arc bend and the lower part of the first convex arc bend. and the second convex arc bending part installed in the second arc bending part has a gap therebetween,
A third mounting hole corresponding to the second mounting hole is formed at one end of the third piece,
The fourth piece has a fixed joint that is fixed to the third piece and an elastic joint that is not fixed to the third piece, and the fixed joint has the third mounting hole. A fourth mounting hole corresponding to is opened, and a plurality of slits are provided in the fourth piece,
The contact structure is fixed through the first mounting hole, the second mounting hole, the third mounting hole and the fourth mounting hole ,
A contact elastic piece for an electromagnetic relay , wherein an edge of at least one of said slits adjacent to said fourth mounting hole is inclined or arcuately corresponding to a peripheral edge of said fourth mounting hole. structure. 2. The contact elastic piece structure of an electromagnetic relay according to claim 1, wherein the extension directions of said plurality of slits are parallel to each other. 3. The contact elastic piece structure for an electromagnetic relay according to claim 2, wherein said plurality of slits extend toward said elastic node from the periphery of said fourth mounting hole as a starting point. When the number of the plurality of slits is an odd number, the opening area of the slit located in the middle position is larger than the opening area of each of the plurality of slits on both sides. Contact elastic piece structure of the described electromagnetic relay. 4. The contact elastic piece structure for an electromagnetic relay according to claim 3, wherein the plurality of slits is five in number. 2. The contact elastic piece structure of an electromagnetic relay according to claim 1, wherein said plurality of slits are radially provided from the periphery of said fourth mounting hole toward said elastic node. At least one first assembly hole is provided in the other end of the first piece opposite to the one end provided with the first attachment hole, and one end of the second piece provided with the second attachment hole is provided. At least one second assembly hole is provided in the other end on the opposite side, and at least one third assembly hole is provided in the other end of the third piece opposite to the one end on which the third attachment hole is provided. and said first assembly hole, said second assembly hole and said third assembly hole correspond to each other and communicate with each other. 2. The contact elastic piece structure of the electromagnetic relay according to item 1. The number of the elastic piece assemblies is two, and the two elastic piece assemblies are arranged in parallel with each other with a space therebetween, and the contact structure is not provided in the two elastic piece assemblies. 8. The contact elastic piece structure for an electromagnetic relay according to claim 7 , wherein the ends are fixed to each other.

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