Arc-extinguishing high-power relay

Abstract

The utility model discloses an arc-extinguishing high-power relay. A body is provided with an accommodating cavity; the first static contact is accommodated in the accommodating cavity; the second static contact is accommodated in the accommodating cavity; the second static contact piece and the first static contact piece are arranged in parallel up and down; the third static contact is accommodated in the accommodating cavity; the movable contact assembly is contained in the containing cavity, the movable contact assembly is provided with a first contact part matched with the first static contact piece and a second contact part matched with the second static contact piece, the first contact part and the second contact part are located on the two sides of the movable contact assembly respectively, and the third static contact piece is electrically connected with the movable contact assembly; through different position distribution of the two contact parts, different matching positions of the movable contact assembly and the static contact piece are formed, for example, the matching position of the first contact part and the first static contact piece is located on the left side, and the matching position of the second contact part and the second static contact piece is located on the right side, so that a dislocation effect is formed; the opening distance between the first static contact piece and the second static contact piece is increased, an arc breaking effect is formed, and the arc discharge phenomenon is prevented.

Description

Technical Field

[0001] The utility model relates to the field of electrical technology, in particular to an arc-extinguishing high-power relay. Background Art

[0002] The relay controls the internal coil to attract, so that the moving contact assembly cooperates with different static contacts to form different electrical circuit effects. In the prior art, the static contacts are arranged in parallel up and down, and the matching positions of the moving contact assembly and the static contacts are also consistent up and down. The problem with this structure is that the distance between the upper and lower static contacts is small, and arcing is very likely to occur, especially in high-power relays. If the distance between the two static contacts is increased, the volume of the entire relay will increase. How to reduce the occurrence of arcing without increasing the volume has become a technical problem that technicians in this field urgently need to solve. Utility Model Content

[0003] Therefore, the technical problem to be solved by the utility model is how to reduce the arcing phenomenon without increasing the volume. To this end, an arc extinguishing high-power relay comprises:

[0004] A body, wherein the body is provided with a receiving cavity;

[0005] a first stationary contact, the first stationary contact being accommodated in the accommodating cavity;

[0006] a second static contact, the second static contact being accommodated in the accommodating cavity; the second static contact being arranged vertically parallel to the first static contact;

[0007] a third stationary contact, the third stationary contact being accommodated in the accommodation cavity;

[0008] A moving contact component is accommodated in the accommodating cavity, and is provided with a first contact portion cooperating with the first static contact member, and a second contact portion cooperating with the second static contact member, the first contact portion and the second contact portion are respectively located on both sides of the moving contact component, and the third static contact member is electrically connected to the moving contact component.

[0009] The first static contact is fixed with a first arc-striking piece, the second static contact is fixed with a second arc-striking piece, the main body is provided with an arc-striking hole, and the arc-striking hole is located between the first arc-striking piece and the second arc-striking piece.

[0010] The first arc-starting piece is provided with a first extending portion, and the first extending portion extends toward one side of the moving contact component; the second arc-starting piece is provided with a second extending portion, and the second extending portion extends toward one side of the moving contact component.

[0011] The first arc-starting piece is inverted U-shaped, and the second arc-starting piece is U-shaped.

[0012] The first stationary contact piece and the second stationary contact piece are arranged alternately up and down.

[0013] The third stationary contact member is softly connected to the moving contact assembly.

[0014] The moving contact assembly includes a first component and a second component, a first contact portion and a second contact portion are arranged on the first component, and the first component and the second component are spliced.

[0015] The first component is provided with a through slot, and the through slot is located between the first contact portion and the second contact portion.

[0016] It also includes an elastic member, one end of which is connected to the second member, and the other end of which is connected to the body.

[0017] The first static contact extends to the outer part of the main body and is provided with a first terminal, the second static contact extends to the outer part of the main body and is provided with a second terminal, and the third static contact extends to the outer part of the main body and is provided with a third terminal. The first terminal, the second terminal and the third terminal are staggered in upper and lower positions.

[0018] The technical solution of the utility model has the following advantages:

[0019] 1. The utility model provides an arc-extinguishing high-power relay, which forms different matching positions of the moving contact assembly and the static contact through the different position distributions of the two contact parts. For example, the matching position of the first contact part and the first static contact is located on the left, and the matching position of the second contact part and the second static contact is located on the right, forming a staggered effect, increasing the opening distance between the first static contact and the second static contact, forming an arc-breaking effect, preventing the occurrence of arcing, and thus also achieving a certain arc-extinguishing effect.

[0020] 2. The utility model provides an arc-extinguishing high-power relay, in which the cooperation of two arc-striking pieces and the arc-striking hole forms an arc-striking effect, thereby preventing the arc from running wildly and protecting the internal components.

[0021] 3. The utility model provides an arc-extinguishing high-power relay, in which the first extension part and the second extension part are arranged to form an arc-guiding effect, thereby making the arc-strike efficiency higher.

[0022] 4. The utility model provides an arc-extinguishing high-power relay, which is staggered in distribution up and down, reducing the intersection of the first static contact and the second static contact in the up and down directions, and can reduce the generation of arcing.

[0023] 5. The utility model provides an arc-extinguishing high-power relay, which reduces the difficulty of processing by splicing the first component and the second component.

[0024] 6. The utility model provides an arc-extinguishing high-power relay, in which the elastic member forms a pulling force and a resetting effect. When the attracting force of the coil disappears, it can be quickly reset and arcing can be prevented.

[0025] 7. The utility model provides an arc-extinguishing high-power relay, in which three terminal blocks are staggered up and down, which is convenient for wiring and prevents electric shock. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 A schematic diagram of the structure of an arc-extinguishing high-power relay provided by the utility model;

[0028] Figure 2 A top view of an arc-extinguishing high-power relay provided by the utility model;

[0029] Figure 3 A schematic diagram of the coordination of the first stationary contact, the second stationary contact, the third stationary contact, and the side plate provided by the utility model;

[0030] Figure 4 A top view of the dynamic touch assembly provided by the utility model;

[0031] Figure 5 This is a side view of the dynamic touch assembly provided by the utility model.

[0032] Description of reference numerals:

[0033] 11. Main body; 12. Side plate; 13. Bottom plate; 14. First static contact; 15. Second static contact; 16. Third static contact; 17. Coil; 18. Moving contact assembly; 19. First arc-striking piece; 20. Second arc-striking piece; 21. First component; 22. Second component; 23. Elastic member; 111. Accommodating cavity; 112. Arc-striking hole; 141. First terminal; 151. Second terminal; 161. Third terminal; 181. First contact portion; 182. Second contact portion; 191. First extension portion; 201. Second extension portion; 211. Through groove. DETAILED DESCRIPTION

[0034] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0038] Example 1

[0039] This embodiment provides an arc extinguishing high-power relay, as shown in the attached Figure 1-5 As shown, including:

[0040] The body 11 is provided with a receiving cavity 111. Here, the body 11 includes a shell, a side plate 12, and a bottom plate 13, which cooperate to form the receiving cavity 111. This is a prior art, so the shell is not shown in the attached drawings. The side plate 12 is used to cooperate with the first static contact 14, the second static contact 15, and the third static contact 16. The bottom plate 13 is used to cooperate with the coil 17.

[0041] The first static contact 14 is accommodated in the accommodating cavity 111 . In this embodiment, the first static contact 14 is fixed with the side plate 12 . A portion of the first static contact 14 extends through the side plate 12 into the accommodating cavity 111 , and the rest of the first static contact 14 is located outside the body 11 .

[0042] The second static contact 15 is accommodated in the accommodating cavity 111. In this embodiment, the second static contact 15 is fixed with the side plate 12. A portion of the second static contact 15 passes through the side plate 12 and extends into the accommodating cavity 111. The rest of the second static contact 15 is located outside the body 11. Here, the second static contact 15 and the first static contact 14 are arranged in parallel up and down, and the first static contact 14 is located above the second static contact 15.

[0043] The third static contact 16 is accommodated in the accommodating cavity 111. In this embodiment, the third static contact 16 is fixed with the side plate 12, and a portion of the third static contact 16 extends through the side plate 12 into the accommodating cavity 111, and the rest of the third static contact 16 is located outside the body 11. Here, the third static contact 16 is a common terminal, and through the cooperation of the dynamic contact assembly 18, the third static contact 16 is electrically connected to the first static contact 14 or the third static contact 16 is electrically connected to the second static contact 15.

[0044] The movable contact assembly 18 is accommodated in the accommodating cavity 111. The movable contact assembly 18 is provided with a first contact portion 181 that cooperates with the first static contact 14 and a second contact portion 182 that cooperates with the second static contact 15. The first contact portion 181 and the second contact portion 182 are respectively located on both sides of the movable contact assembly 18. In this embodiment, the first contact portion 181 and the second contact portion 182 are also oriented in different directions. The first contact portion 181 is oriented upward, and the second contact portion 182 is oriented downward. The third static contact 16 is electrically connected to the movable contact assembly 18. Through the different position distribution of the two contact parts, the matching positions of the moving contact assembly 18 and the static contact are different. For example, the matching position of the first contact part 181 and the first static contact 14 is located on the left, and the matching position of the second contact part 182 and the second static contact 15 is located on the right, forming a dislocation effect, increasing the opening distance between the first static contact 14 and the second static contact 15, forming an arc-breaking effect, preventing the arcing phenomenon, and thus also achieving a certain arc extinguishing effect. Here, the distance from the first contact part 181 to the second contact part 182 can be adjusted according to actual needs.

[0045] Specifically, as attached Figure 1-3As shown, the first static contact 14 is fixed with a first arc-striking piece 19, the second static contact 15 is fixed with a second arc-striking piece 20, and the main body 11 is provided with an arc-striking hole 112, and the arc-striking hole 112 is located between the first arc-striking piece 19 and the second arc-striking piece 20. The number of arc-striking holes 112 here can be one or more. For example, when the number of arc-striking holes 112 is two, one of the arc-striking holes 112 is close to the first arc-striking piece 19, and the other arc-striking hole 112 is close to the second arc-striking piece 20. The cooperation of the two arc-striking pieces and the arc-striking holes 112 forms an arc-striking effect, prevents the arc from running wildly, and plays an effect of protecting internal components. In addition, an arc extinguishing chamber can also be directly set in the accommodating cavity 111, so that the arc generated by the moving contact component 18 is directly extinguished in the arc extinguishing chamber.

[0046] Specifically, as attached Figure 1-3 As shown, the first arc-striking piece 19 is provided with a first extension portion 191, which extends toward one side of the moving contact assembly 18, and the first extension portion 191 is located at both sides of the first arc-striking piece 19. The second arc-striking piece 20 is provided with a second extension portion 201, which extends toward one side of the moving contact assembly 18, and the second extension portion 201 is located at both sides of the second arc-striking piece 20. The arrangement of the first extension portion 191 and the second extension portion 201 forms an arc-striking guiding effect, so that the arc-striking efficiency is higher.

[0047] Specifically, the first arc-starting piece 19 is inverted U-shape, and the second arc-starting piece 20 is U-shape.

[0048] Specifically, the first static contact 14 and the second static contact 15 are staggered in the vertical direction. The staggered arrangement reduces the intersection of the first static contact 14 and the second static contact 15 in the vertical direction, which can reduce the generation of arcing. The first static contact 14 is located at the top, and the second static contact 15 is located at the bottom. Most of the first static contact 14 is located on the left side of the side plate 12, and most of the second static contact 15 is located on the right side of the side plate 12, so an up-down staggered distribution is formed. Through the up-down movement of the dynamic contact component 18, the effect of the dynamic contact component 18 cooperating with the first static contact 14, or the effect of the dynamic contact component 18 cooperating with the second static contact 15 is achieved.

[0049] Specifically, the third stationary contact 16 and the moving contact assembly 18 are in a soft connection, which can be a soft copper wire connection or a wire connection.

[0050] Specifically, as attached Figure 4-5 As shown, the moving contact assembly 18 includes a first component 21 and a second component 22, a first contact portion 181 and a second contact portion 182 are arranged on the first component 21, and the first component 21 and the second component 22 are spliced. The processing difficulty is reduced by splicing the first component 21 and the second component 22. In addition, the moving contact assembly 18 can also be an integrally formed arrangement.

[0051] Specifically, the first component 21 is provided with a through slot 211, and the through slot 211 is located between the first contact portion 181 and the second contact portion 182. The through slot 211 can adjust the balance between the two contact portions. Through the through slot 211, the two contact portions have a certain elastic effect, and the two do not interfere with each other, so a balance is formed.

[0052] Specifically, it also includes an elastic member 23, one end of the elastic member 23 is connected to the second member 22, and the other end of the elastic member 23 is connected to the body 11, where the elastic member 23 is connected to the bottom plate 13. The elastic member 23 forms a reset effect, and when the suction force of the coil 17 disappears, it can be quickly reset, and arcing can be prevented. In this embodiment, the elastic member 23 can be a tension spring.

[0053] Specifically, as attached Figure 1-3 As shown, the first static contact 14 extends to the outer part of the body 11 and is provided with a first terminal 141, the second static contact 15 extends to the outer part of the body 11 and is provided with a second terminal 151, and the third static contact 16 extends to the outer part of the body 11 and is provided with a third terminal 161. The first terminal 141, the second terminal 151, and the third terminal 161 are staggered up and down. The three terminals are staggered up and down to facilitate wiring and prevent electric shock. The first terminal 141 is located on the left side of the side plate 12, the second terminal 151 is located on the right side of the side plate 12, and the third terminal 161 is located in the middle of the side plate 12, so the effect of staggered distribution up and down is formed.

[0054] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention of the utility model.

Claims

1. An arc-extinguishing high-power relay, characterized in that: include: A body (11), wherein the body (11) is provided with a receiving cavity (111); a first stationary contact (14), the first stationary contact (14) being accommodated in the accommodating cavity (111); A second static contact (15), the second static contact (15) being accommodated in the accommodating cavity (111); the second static contact (15) and the first static contact (14) being arranged vertically and parallelly; a third stationary contact (16), the third stationary contact (16) being accommodated in the accommodating cavity (111); A moving contact component (18), the moving contact component (18) is accommodated in the accommodating cavity (111), the moving contact component (18) is provided with a first contact portion (181) cooperating with the first static contact member (14), and a second contact portion (182) cooperating with the second static contact member (15), the first contact portion (181) and the second contact portion (182) are respectively located on both sides of the moving contact component (18), and the third static contact member (16) is electrically connected to the moving contact component (18).

2. The arc-extinguishing high-power relay according to claim 1, characterized in that: The first stationary contact (14) is fixed with a first arc-striking piece (19), the second stationary contact (15) is fixed with a second arc-striking piece (20), the main body (11) is provided with an arc-striking hole (112), and the arc-striking hole (112) is located between the first arc-striking piece (19) and the second arc-striking piece (20).

3. The arc-extinguishing high-power relay according to claim 2, characterized in that: The first arc-starting piece (19) is provided with a first extension portion (191), and the first extension portion (191) extends toward one side of the moving contact component (18); the second arc-starting piece (20) is provided with a second extension portion (201), and the second extension portion (201) extends toward one side of the moving contact component (18).

4. The arc-extinguishing high-power relay according to claim 2 or 3, characterized in that: The first arc-striking piece (19) is in an inverted U shape, and the second arc-striking piece (20) is in a U shape.

5. The arc-extinguishing high-power relay according to claim 1, characterized in that: The first stationary contact piece (14) and the second stationary contact piece (15) are arranged in an alternating manner up and down.

6. The arc-extinguishing high-power relay according to claim 1, characterized in that: The third stationary contact member (16) and the moving contact assembly (18) are softly connected.

7. The arc-extinguishing high-power relay according to claim 1, characterized in that: The movable contact assembly (18) comprises a first component (21) and a second component (22); the first contact portion (181) and the second contact portion (182) are arranged on the first component (21); and the first component (21) and the second component (22) are spliced.

8. The arc-extinguishing high-power relay according to claim 7, characterized in that: The first component (21) is provided with a through slot (211), and the through slot (211) is located between the first contact portion (181) and the second contact portion (182).

9. The arc-extinguishing high-power relay according to claim 7, characterized in that: It also comprises an elastic member (23), one end of the elastic member (23) is connected to the second member (22), and the other end of the elastic member (23) is connected to the body (11).

10. The arc-extinguishing high-power relay according to claim 1, characterized in that: The first stationary contact (14) extends to the outer part of the main body (11) and is provided with a first terminal (141); the second stationary contact (15) extends to the outer part of the main body (11) and is provided with a second terminal (151); the third stationary contact (16) extends to the outer part of the main body (11) and is provided with a third terminal (161); the first terminal (141), the second terminal (151) and the third terminal (161) are staggered in upper and lower positions.

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