A movable contact pressure holding structure and a switch

Abstract

The utility model discloses a kind of movable contact pressure maintaining structure and switch, comprising: rotating member is provided with recessed cavity, recessed cavity is provided with side opening;First static contact;Second static contact;Third static contact;The both ends of movable contact are respectively first contact part, second contact part, movable contact part extends to recessed cavity, the part of movable contact extending to recessed cavity is provided with through slot, movable contact and third static contact are electrically connected;Elastic member is located in through slot, and elastic member part exceeds to through slot outside, the part of elastic member exceeding to through slot outside is located on the movement track of recessed cavity inner wall;The rotation center line of movable contact and the rotation center line of rotating member are colinear arrangement, rotating member drives movable contact to rotate;Adopt this structure setting, the effect of contact pressure can be realized through an elastic member, so other patents can be avoided;Second, through this structure setting, simple structure, installation is more convenient.

Description

Technical Field

[0001] This utility model relates to the electrical field, specifically to a moving contact pressure holding structure and a switch. Background Technology

[0002] Existing dual-power switches and double-throw disconnect switches are both dual-contact structures. They use two symmetrically arranged elastic elements (such as torsion springs and compression springs) to achieve contact pressure at both ends of the moving contact, thereby ensuring the stability of the electrical connection.

[0003] However, in the existing technology, the fixing structure of two symmetrically arranged elastic members has been patented. How to improve the existing technology and thus circumvent the patent barrier has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is how to improve the existing technology to circumvent patent barriers. To this end, a moving contact pressure holding structure includes: A rotating component, wherein the rotating component has a recessed cavity and the recessed cavity has a side opening; First stationary contact; Second stationary contact; Third stationary contact; A moving contact, wherein the two ends of the moving contact are a first contact head and a second contact head respectively, the moving contact part extends into the cavity, the part of the moving contact extending into the cavity is provided with a through groove, and the moving contact is electrically connected to the third stationary contact; An elastic element is located within the through groove, and a portion of the elastic element extends beyond the through groove. The portion of the elastic element extending beyond the through groove is located on the movement trajectory of the inner wall of the cavity. The rotation center line of the moving contact is collinear with the rotation center line of the rotating component, and the rotating component drives the moving contact to rotate. In the first state, during the rotation of the rotating component, the moving contact rotates, and the rotating component presses against the elastic component, so that the first stationary contact abuts against the first contact head. In the second state, during the rotation of the rotating component, the moving contact rotates, and the rotating component presses against the elastic component, so that the second stationary contact and the second contact head abut against each other.

[0005] The inner wall of the cavity is provided with a groove, and the two side walls of the groove abut against the two ends of the elastic element, respectively.

[0006] The number of grooves is two, and the two grooves are symmetrically arranged with respect to the moving contact.

[0007] The elastic element is a spring.

[0008] The cavity is provided with a first driving surface and a second driving surface. In a first state, a first gap is provided between the first driving surface and the moving contact. The rotating member rotates so that the first driving surface abuts against the moving contact, thereby achieving the effect of the rotating member driving the moving contact to rotate. In a second state, a second gap is provided between the second driving surface and the moving contact. The rotating member rotates so that the second driving surface abuts against the moving contact, thereby achieving the effect of the rotating member driving the moving contact to rotate.

[0009] The moving contact is provided with a rotating part, the rotating part is provided with a first through hole, and the rotating component is provided with a second through hole. The first through hole and the second through hole are coaxially arranged.

[0010] It also includes two arc-extinguishing components, which are respectively disposed on one side of the first stationary contact and the second stationary contact.

[0011] The moving contact is provided with a connecting part, and the connecting part is flexibly connected to the third stationary contact.

[0012] The moving contact pressure holding structure is installed on a dual power switch; or, the moving contact pressure holding structure is installed on a double-throw disconnector.

[0013] Therefore, the technical problem to be solved by this utility model is how to improve the existing technology and thus circumvent patent barriers. To this end, a switch is provided, including the above-mentioned moving contact pressure holding structure, wherein the number of moving contact pressure holding structures located in the same unit is at least one set, and when the number of moving contact pressure holding structures exceeds one set, adjacent sets of moving contact pressure holding structures are superimposed.

[0014] The technical solution of this utility model has the following advantages: 1. The present invention provides a moving contact pressure holding structure. With this structure, the contact pressure effect can be achieved through a single elastic element, thereby circumventing other patents. Secondly, this structure is simple and easier to install.

[0015] 2. The moving contact pressure holding structure provided by this utility model has a groove, which further improves the cooperation effect between the cavity and the elastic element, so that the rotating element applies pressure to the elastic element during rotation.

[0016] 3. The moving contact pressure holding structure provided by this utility model has two grooves arranged symmetrically to form a balance in the axial direction, which further improves the overall stability. In addition, the number of grooves can also be one.

[0017] 4. The moving contact pressure holding structure provided by this utility model has a buffering effect created by setting the first gap and the second gap.

[0018] 5. The present invention provides a moving contact pressure holding structure, and the arc extinguishing component is set to form an arc extinguishing effect.

[0019] 6. The moving contact pressure holding structure provided by this utility model has a connection part that makes the electrical connection between the third stationary contact and the moving contact more convenient. The flexible connection here can be a soft copper wire connection or a wire connection.

[0020] 7. The switch provided by this utility model adopts this structure. When it is necessary to improve the current withstand capability, or when it is suitable for DC power environment, the current withstand capability can be improved by superimposing the moving contact pressure holding structure. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 A schematic diagram of the moving contact pressure holding structure provided by this utility model; Figure 2 This is a front view of the moving contact pressure holding structure provided by this utility model; Figure 3 A cross-sectional view of the moving contact pressure holding structure provided by this utility model; Figure 4 A schematic diagram of the structure of the rotating component, moving contact, and elastic component provided by this utility model; Figure 5 for Figure 4 Exploded view; Figure 6 for Figure 4 A sectional view; Figure 7 A partial structural schematic diagram of the switch provided by this utility model.

[0023] Explanation of reference numerals in the attached figures: 11. Rotating component; 12. First stationary contact; 13. Second stationary contact; 14. Third stationary contact; 15. Moving contact; 16. Elastic component; 17. Arc extinguishing assembly; 111. Cavity; 112. Side opening; 113. Groove; 114. First driving surface; 115. Second driving surface; 116. First gap; 117. Second gap; 118. Second through hole; 151. First contact head; 152. Second contact head; 153. Through groove; 154. Rotating part; 155. First through hole; 156. Connecting part. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0028] Example 1 This embodiment provides a moving contact pressure holding structure, as shown in the attached figure. Figures 1-6 As shown, it includes: The rotating component 11 has a cavity 111 and a side opening 112, which is a radial opening.

[0029] First stationary contact 12; Second stationary contact 13; Third stationary contact 14; The moving contact 15 has a first contact head 151 and a second contact head 152 at its two ends. A portion of the moving contact 15 extends into the cavity 111, and this portion has a through groove 153 that passes through the moving contact 15 vertically. After the moving contact 15 is assembled with the rotating component 11, the channel is located within the cavity 111. The moving contact 15 is electrically connected to the third stationary contact 14.

[0030] The elastic element 16 is located within the through groove 153. Both ends of the elastic element 16 abut against the inner wall of the through groove 153, and a portion of the elastic element 16 extends beyond the through groove 153. The elastic element 16 extends beyond the through groove 153 in the height direction of the rotating member 11, specifically in its axial direction. The elastic element 16 can extend upwards, downwards, or both. The portion of the elastic element 16 extending beyond the through groove 153 lies on the movement trajectory of the inner wall of the cavity 111. That is, when the rotating member 11 rotates, the inner wall of the cavity 111 abuts against the elastic element 16, compressing it and creating contact pressure. In this embodiment, in a set of moving contact pressure holding structures, the number of elastic elements 16 is only one.

[0031] The rotation center line of the moving contact 15 and the rotation center line of the rotating member 11 are collinear. The moving contact 15 and the rotating member 11 rotate coaxially and relative to each other. The rotating member 11 drives the moving contact 15 to rotate. When the moving contact 15 is stationary, the rotating member 11 can continue to rotate.

[0032] In the first state, during the rotation of the rotating member 11, the moving contact 15 is driven to rotate, and the rotating member 11 presses against the elastic member 16, so that the first stationary contact 12 and the first contact head 151 are in contact. When the first stationary contact 12 and the first contact head 151 are in contact, the rotating member 11 continues to rotate, so as to press against the elastic member 16. The elastic member 16 applies pressure to the first contact head 151 to form contact pressure, thereby ensuring the stability of the electrical connection between the first stationary contact 12 and the first contact head 151.

[0033] In the second state, during the rotation of the rotating member 11, the moving contact 15 rotates, and the rotating member 11 presses against the elastic member 16, so that the second stationary contact 13 and the second contact head 152 abut against each other. When the second stationary contact 13 and the second contact head 152 abut against each other, the rotating member 11 continues to rotate, achieving the effect of pressing against the elastic member 16. The elastic member 16 applies pressure to the second contact head 152, forming contact pressure, thereby ensuring the stability of the electrical connection between the second stationary contact 13 and the second contact head 152. With this structural design, the contact pressure effect can be achieved through a single elastic member 16, thus circumventing other patents; secondly, this structural design is simple and easier to install.

[0034] Specifically, as shown in the attached document Figures 1-6 As shown, the inner wall of the cavity 111 is provided with a groove 113, which is located near the side opening 112 and communicates with the side opening. The two side walls of the groove 113 abut against the two ends of the elastic member 16. When the elastic member 16 is fixed in the through groove 153, the two ends of the portion of the elastic member 16 extending beyond the through groove 153 abut against the two ends of the groove 113, creating the effect of the rotating member 11 driving the elastic member 16. The groove 113 further improves the cooperation effect between the cavity 111 and the elastic member 16, allowing the rotating member 11 to apply pressure to the elastic member 16 during rotation.

[0035] Specifically, as shown in the attached document Figures 1-6 As shown, there are two grooves 113, which are symmetrically arranged relative to the moving contact 15. The two grooves 113 are vertically symmetrical. When the moving contact 15 is inserted into the cavity 111, one groove 113 is above the moving contact 15, and the other groove 113 is below the moving contact 15. When the elastic element 16 is located in the through groove 153, the elastic element 16 extends upwards and downwards beyond the through groove 153. At this time, the two ends of the portion of the elastic element 16 extending upwards abut against the two ends of the upper groove 113, and the two ends of the portion of the elastic element 16 extending downwards abut against the two ends of the lower groove 113. The symmetrical arrangement of the two grooves 113 creates axial balance, further improving overall stability. Alternatively, the number of grooves 113 can be one, which can be adjusted by those skilled in the art according to actual needs.

[0036] Specifically, the elastic element 16 is a spring. Preferably, the elastic element 16 is a straight spring. However, those skilled in the art can adjust the structure of the elastic element 16 according to actual needs, and it can be changed to a torsion spring or other structures. It should also be noted that the size and stiffness of the spring can be adjusted according to actual needs.

[0037] Specifically, as shown in the attached document Figure 6As shown, the cavity 111 is provided with a first driving surface 114 and a second driving surface 115. In a first state, a first gap 116 is provided between the first driving surface 114 and the moving contact 15. The rotating member 11 rotates through the first gap 116, causing the first driving surface 114 to abut against the moving contact 15, thereby achieving the effect of the rotating member 11 driving the moving contact 15 to rotate. In a second state, a second gap 117 is provided between the second driving surface 115 and the moving contact 15. The rotating member 11 rotates through the second gap 117, causing the second driving surface 115 to abut against the moving contact 15, thereby achieving the effect of the rotating member 11 driving the moving contact 15 to rotate. The arrangement of the first gap 116 and the second gap 117 forms a buffering effect.

[0038] Specifically, as shown in the attached document Figures 1-6 As shown, the moving contact 15 has a rotating part 154, which has a first through hole 155. The rotating component 11 has a second through hole 118, and the first through hole 155 and the second through hole 118 are coaxially arranged. At this time, the pin passes through the first through hole 155 and the second through hole 118, causing the moving contact 15 to rotate relative to the pin. The pin is connected to the rotating component 11; when the pin rotates, it drives the rotating component 11 to rotate, and the moving contact 15 rotates relative to the pin. The pin is not shown in the attached figure, but those skilled in the art should know how the pin is arranged. Alternatively, other connection methods can be used to achieve the relative rotation effect of the moving contact 15.

[0039] Specifically, as shown in the attached document Figures 1-2 As shown, it also includes two arc-extinguishing components 17, which are respectively disposed on one side of the first stationary contact 12 and the second stationary contact 13. One arc-extinguishing component 17 is located on the path through which the first contact head 151 moves to engage with the first stationary contact 12, and the other arc-extinguishing component 17 is located on the path through which the second contact head 152 moves to engage with the second stationary contact 13. The arrangement of the arc-extinguishing components 17 creates an arc-extinguishing effect. Here, the arc-extinguishing component 17 includes an arc-extinguishing grid, which is prior art and will not be described in detail.

[0040] Specifically, as shown in the attached document Figures 1-6 As shown, the moving contact 15 is provided with a connecting portion 156, which is flexibly connected to the third stationary contact 14. The connecting portion 156 facilitates the electrical connection between the third stationary contact 14 and the moving contact 15. This flexible connection can be a soft copper wire connection or a conductor connection. One end of the soft copper wire is connected to the third stationary contact 14, and the other end is connected to the connecting portion 156.

[0041] Specifically, in the third state, the first stationary contact 12 separates from the first contact head 151, and the second stationary contact 13 separates from the second contact head 152, resulting in a complete disconnection.

[0042] Specifically, the moving contact pressure holding structure is installed on a dual-power switch. Alternatively, the moving contact pressure holding structure is installed on a double-throw disconnector.

[0043] Example 2 This embodiment provides a switch, as shown in the attached diagram. Figure 7 As shown, it includes a moving contact pressure holding structure, which has been described in detail in Embodiment 1, and therefore will not be elaborated upon in this embodiment. The number of moving contact pressure holding structures located in the same unit is at least one set. When the number of moving contact pressure holding structures exceeds one set, adjacent sets of moving contact pressure holding structures are stacked. This stacking is vertical; for example, when there are two sets of moving contact pressure holding structures, the rotating member 11 has two recesses 111, which are arranged vertically. Each recess 111 has a fixed moving contact 15. The two moving contacts 15 combine to form a circuit control unit, thereby improving the current withstand rating of the circuit. Using this structure, when it is necessary to improve the current withstand rating, or when applicable to a DC environment, the current withstand rating can be improved by stacking the moving contact pressure holding structures.

[0044] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A moving contact pressure holding structure, characterized in that, include: A rotating component (11) is provided with a cavity (111) and a side opening (112). First stationary contact (12); Second stationary contact (13); Third stationary contact (14); A moving contact (15) has a first contact head (151) and a second contact head (152) at its two ends. The moving contact (15) extends into the cavity (111). The portion of the moving contact (15) extending into the cavity (111) is provided with a through groove (153). The moving contact (15) is electrically connected to the third stationary contact (14). The elastic element (16) is located in the through groove (153), and a portion of the elastic element (16) extends out of the through groove (153). The portion of the elastic element (16) extending out of the through groove (153) is located on the movement trajectory of the inner wall of the cavity (111). The rotation center line of the moving contact (15) and the rotation center line of the rotating member (11) are collinear, and the rotating member (11) drives the moving contact (15) to rotate. In the first state, the rotating member (11) rotates and drives the moving contact (15) to rotate, and the rotating member (11) squeezes the elastic member (16) to achieve the first stationary contact (12) abutting against the first contact head (151); In the second state, the rotating member (11) rotates and drives the moving contact (15) to rotate, and the rotating member (11) squeezes the elastic member (16) to achieve the second stationary contact (13) abutting against the second contact head (152).

2. The moving contact pressure holding structure according to claim 1, characterized in that, The inner wall of the cavity (111) is provided with a groove (113), and the two side walls of the groove (113) abut against the two ends of the elastic member (16).

3. The moving contact pressure holding structure according to claim 2, characterized in that, The number of grooves (113) is two, and the two grooves (113) are symmetrically arranged with respect to the moving contact (15).

4. The moving contact pressure holding structure according to claim 1, characterized in that, The elastic element (16) is a spring.

5. The moving contact pressure holding structure according to claim 1, characterized in that, The cavity (111) is provided with a first driving surface (114) and a second driving surface (115). In a first state, a first gap (116) is provided between the first driving surface (114) and the moving contact (15). The rotating member (11) rotates so that the first driving surface (114) abuts against the moving contact (15), thereby achieving the effect of the rotating member (11) driving the moving contact (15) to rotate. In a second state, a second gap (117) is provided between the second driving surface (115) and the moving contact (15). The rotating member (11) rotates so that the second driving surface (115) abuts against the moving contact (15), thereby achieving the effect of the rotating member (11) driving the moving contact (15) to rotate.

6. The moving contact pressure holding structure according to claim 1, characterized in that, The moving contact (15) is provided with a rotating part (154), the rotating part (154) is provided with a first through hole (155), and the rotating member (11) is provided with a second through hole (118). The first through hole (155) and the second through hole (118) are coaxially arranged.

7. The moving contact pressure holding structure according to claim 1, characterized in that, It also includes an arc extinguishing component (17), and there are two arc extinguishing components (17), which are respectively disposed on one side of the first stationary contact (12) and the second stationary contact (13).

8. The moving contact pressure holding structure according to claim 1, characterized in that, The moving contact (15) is provided with a connecting part (156), and the connecting part (156) is softly connected to the third stationary contact (14).

9. The moving contact pressure holding structure according to claim 1, characterized in that, The moving contact pressure holding structure is installed on a dual power switch; or, the moving contact pressure holding structure is installed on a double-throw disconnector.

10. A switch, characterized in that, Including the moving contact pressure holding structure as described in any one of claims 1-9, the number of moving contact pressure holding structures located in the same unit is at least one set, and when the number of moving contact pressure holding structures exceeds one set, adjacent sets of moving contact pressure holding structures are superimposed.

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