Contactor arc extinguish chamber assembly structure and contactor

Abstract

The utility model relates to a contactor arc extinguish chamber assembling structure and a contactor. The contactor arc extinguish chamber assembling structure comprises a first through hole structure located on a cover plate; the second perforation structure is positioned on the shell; the third perforation structure is positioned on the base; the limiting pin assembly comprises an L-shaped pin, one end of the L-shaped pin is an operation end, the other end of the L-shaped pin is a bending part, the limiting pin assembly further comprises an elastic piece, and the elastic piece is installed on the L-shaped pin and located between the bending part and the operation end. The L-shaped pin is arranged in the first through hole structure, the second through hole structure and the third through hole structure in a penetrating mode at the same time, the elastic piece is located in the first through hole structure, the elastic piece is in a compressed state, the operating end is elastically connected with the cover plate through the elastic piece, the bending part is connected with the base, and the positions of the cover plate and the base relative to the shell in the axial direction of the L-shaped pin are limited. And the cover plate, the shell and the base are sequentially attached and fixed to form an arc extinguish chamber. Therefore, the connecting structure of the plastic body structure is simplified, the arc extinguish chamber is convenient to disassemble and assemble, the production cost is reduced, and the use effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of contactor technology, and in particular to a contactor arc-extinguishing chamber assembly structure and a contactor. Background Technology

[0002] The plastic body structure of a contactor typically includes a base for mounting the moving and stationary contacts and a housing for mounting the arc-extinguishing grid. The housing and the base form an arc-extinguishing chamber. A cover plate is installed on the housing, which serves to shield the contacts and also provides some arc-blocking function.

[0003] Conventional cover plates typically use a snap-fit ​​structure to connect to the housing, and the housing and base are connected by fasteners. This results in a complex installation structure and cumbersome installation process, making it inconvenient for users and installers. In addition, the increased complexity of the molding molds for snap-fit ​​structures increases mold costs, and the snap-fit ​​structure is prone to damage during use, affecting its performance. Utility Model Content

[0004] In response to the shortcomings of the existing production technology, the applicant provides a contactor arc-extinguishing chamber assembly structure and a contactor, thereby simplifying the connection structure of the plastic body structure, making the arc-extinguishing chamber easy to disassemble and assemble, reducing production costs, and improving the performance.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A contactor arc-extinguishing chamber assembly structure, comprising:

[0007] The first perforation structure is located on the cover plate of the contactor, and there are two or more perforations.

[0008] The second perforation structure is located on the contactor housing and corresponds to the first perforation structure.

[0009] The third perforation structure is located on the base of the contactor and corresponds to the second perforation structure.

[0010] A limiting pin assembly includes an L-shaped pin, one end of which is an operating end and the other end of which is a bent portion. It also includes an elastic element, which is mounted on the L-shaped pin and located between the bent portion and the operating end.

[0011] The L-shaped pin is simultaneously inserted into the first perforation structure, the second perforation structure, and the third perforation structure. The elastic element is located in the first perforation structure and is in a compressed state. The elastic element elastically connects the operating end to the cover plate, and the bent part is connected to the base. This restricts the position of the cover plate and the base relative to the housing along the axial direction of the L-shaped pin, so that the cover plate, the housing, and the base are sequentially fitted and fixed to form the arc-extinguishing chamber.

[0012] As a further improvement to the above technical solution:

[0013] The operating end is provided with a standard groove that mates with a fastening tool.

[0014] The elastic element is a spring, which is sleeved on the outside of the L-shaped pin.

[0015] The cover plate is provided with an insertion tube, and the housing is provided with a slot that matches the insertion tube;

[0016] The first perforation structure includes a guide hole located at the center of the insertion tube, the guide hole slidingly engaging with the operating end, one end of the insertion tube being open, and the other end of the insertion tube being provided with a first through hole, the cross-sectional dimension of the first through hole being smaller than the cross-sectional dimension of the guide hole, and the first through hole matching the bending portion;

[0017] The second perforated structure extends through the bottom of the slot, and when the insertion tube is inserted into the slot, the second perforated structure is aligned with the first through hole.

[0018] The L-shaped pin is provided with a limiting boss, which cooperates with the insertion end of the tube on one side of the first through hole to limit the compression of the elastic element.

[0019] The second perforated structure includes an elongated through hole disposed on the housing. A stop block is disposed within the elongated through hole. The stop block and the inner wall of the elongated through hole form a second through hole. The cross-sectional dimensions of the second through hole match the bent portion. The end of the stop block and the elongated through hole form a stepped hole structure. The stop block is used to limit the displacement of the bent portion along the axial direction of the L-shaped pin, so that the elastic element is in a compressed state. The inner wall of the elongated through hole is used to limit the swing of the bent portion.

[0020] The third perforated structure includes a third through hole penetrating the base. The cross-sectional dimensions of the third through hole match the bending portion. A limiting groove matching the bending portion is provided on one side of the base of the third perforated structure. When the bending portion is located in the limiting groove, the bending portion is connected to the base, so that the cover plate, the shell and the base are sequentially fitted and fixed to form the arc extinguishing chamber.

[0021] A side stop is provided between the third perforated structure and the limiting groove.

[0022] The housing is provided with a positioning groove, which is located at the end of the second perforated structure;

[0023] The base is provided with a positioning protrusion that matches the positioning groove, and the third through hole penetrates the positioning protrusion;

[0024] When the positioning protrusion is inserted into the positioning groove, the second through hole structure is aligned with the third through hole.

[0025] A contactor comprising the contactor arc-extinguishing chamber assembly structure described in any of the preceding claims.

[0026] The beneficial effects of this utility model are as follows:

[0027] This utility model has a compact and reasonable structure and is easy to operate. By setting corresponding perforated structures on the cover plate, shell and base, and using spring-type pins with limiting structures to lock the cover plate, shell and base together, the connection structure of the plastic body of the contactor arc-extinguishing chamber is simplified, making the arc-extinguishing chamber easy to disassemble and assemble, reducing the traditional snap-fit ​​assembly structure, reducing production costs and improving the performance.

[0028] This utility model also has the following advantages:

[0029] The first through hole in the first perforated structure and the second through hole in the second perforated structure are arranged opposite each other and offset from the third through hole. A limiting structure is provided at the end of the second through hole to restrict the position of the bending part and align the bending part with the third through hole. This allows for the phased assembly of the arc-extinguishing chamber, improving the convenience and efficiency of operation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model.

[0031] Figure 2 This is an isometric sectional view of the present invention.

[0032] Figure 3 This is a cross-sectional view of the limiting pin assembly of this utility model.

[0033] Figure 4 This is a schematic diagram of the installation steps of this utility model.

[0034] Figure 5 This is a schematic diagram of the structure of the cover plate of this utility model.

[0035] Figure 6 This is a schematic diagram of the structure of the shell of this utility model.

[0036] Figure 7 This is a schematic diagram of the structure of the shell of this utility model (from another perspective).

[0037] Figure 8 This is a schematic diagram of the structure of the base of this utility model.

[0038] Figure 9 This is a schematic diagram of the base of this utility model (from another perspective).

[0039] in:

[0040] 1. Cover plate; 11. Insert tube; 12. Insert plate;

[0041] 2. Housing; 21. Insertion slot; 22. Positioning groove; 23. Slot; 24. Card slot;

[0042] 3. Base; 31. Positioning protrusion; 32. Limiting groove; 33. Side stop; 34. Locking block;

[0043] 4. Base;

[0044] 5. Limiting pin assembly; 511. Limiting boss; 51. L-shaped pin; 52. Operating end; 521. Standard groove; 53. Bending part; 54. Elastic element;

[0045] 6. First perforated structure; 61. Guide hole; 62. First through hole;

[0046] 7. Second perforated structure; 71. Stop block; 72. Second through hole;

[0047] 8. Third perforated structure. Detailed Implementation

[0048] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0049] Example 1:

[0050] like Figures 1-4 As shown, the contactor arc-extinguishing chamber assembly structure of this embodiment includes...

[0051] The first perforated structure 6 is located on the cover plate 1 of the contactor, and there are two or more perforated structures.

[0052] The second perforation structure 7 is located on the housing 2 of the contactor and corresponds to the first perforation structure 6.

[0053] The third perforation structure 8 is located on the base 3 of the contactor and corresponds to the second perforation structure 7.

[0054] The limiting pin assembly 5 includes an L-shaped pin 51, one end of which is an operating end 52 and the other end of which is a bent portion 53. It also includes an elastic element 54, which is mounted on the L-shaped pin 51 and located between the bent portion 53 and the operating end 52.

[0055] Among them, the L-shaped pin 51 is simultaneously inserted into the first perforation structure 6, the second perforation structure 7 and the third perforation structure 8. The elastic element 54 is located in the first perforation structure 6. The elastic element 54 is in a compressed state. The elastic element 54 elastically connects the operating end 52 to the cover plate 1. The bent part 53 is connected to the base 3, which restricts the position of the cover plate 1 and the base 3 relative to the housing 2 along the axial direction of the L-shaped pin 51, so that the cover plate 1, the housing 2 and the base 3 are sequentially attached and fixed to form the arc extinguishing chamber.

[0056] When assembling the contactor arc-extinguishing chamber, the L-shaped pin 51, fitted with the elastic element 54, is inserted sequentially into the first through-hole structure 6, the second through-hole structure 7, and the third through-hole structure 8 while overcoming the elastic force of the elastic element 54. Then, it is rotated. Under the compressive force of the elastic element 54, the bent part 53 hooks onto the base 3, thus keeping the cover plate 1, the housing 2, and the base 3 in close contact and fixed.

[0057] Typically, the base 3 is fixedly mounted on the base 4.

[0058] By setting corresponding perforated structures on the cover plate 1, housing 2 and base 3, and using spring-loaded pins with limiting structures to lock the cover plate 1, housing 2 and base 3 together, the connection structure of the plastic body of the contactor arc-extinguishing chamber is simplified, making the arc-extinguishing chamber easy to disassemble and assemble, reducing the traditional snap-fit ​​assembly structure, lowering production costs and improving the performance.

[0059] When the number of limit pin assemblies 5 is two, such as Figure 1 As shown, they are arranged diagonally relative to the center of cover plate 1. Furthermore, depending on the required locking force, different numbers and distribution patterns of the limiting pin assemblies 5 can be used.

[0060] The operating end 52 is provided with a standard groove 521 that mates with a fastening tool. The standard groove 521 can be a slotted, Phillips, or hexagonal type.

[0061] The elastic element 54 is a spring, which is sleeved on the outside of the L-shaped pin 51.

[0062] Example 2:

[0063] The contactor arc-extinguishing chamber assembly structure in this embodiment is further optimized based on Embodiment 1.

[0064] like Figures 1-6 As shown, a tube 11 is provided on the cover plate 1, and a slot 23 matching the tube 11 is provided on the housing 2;

[0065] The first perforation structure 6 includes a guide hole 61 located at the center of the insertion tube 11. The guide hole 61 is slidably engaged with the operating end 52. One end of the insertion tube 11 is open, and the other end of the insertion tube 11 is provided with a first through hole 62. The cross-sectional dimension of the first through hole 62 is smaller than the cross-sectional dimension of the guide hole 61. The first through hole 62 matches the bending part 53.

[0066] The second perforation structure 7 penetrates the bottom of the slot 23. When the insertion tube 11 is inserted into the slot 23, the second perforation structure 7 is aligned with the first through hole 62.

[0067] The cover plate 1 is provided with a insert 12, and the housing 2 is provided with a slot 21 that mates with the insert 12.

[0068] Specifically, such as Figure 5 As shown, the side wall of the insertion tube 11 is provided with a through hole, which facilitates the demolding of the cover plate 1.

[0069] In addition, the L-shaped pin 51 is usually made of metal. In this embodiment, the L-shaped pin 51 runs through the entire arc-extinguishing chamber and is installed on one side of the metal arc-extinguishing grid structure in the arc-extinguishing chamber, which facilitates the heat dissipation of the arc-extinguishing chamber. If the arc overflows to the L-shaped pin 51, the L-shaped pin 51 can also cut the arc and play the role of extinguishing the arc.

[0070] like Figure 3 As shown, the L-shaped pin 51 is provided with a limiting boss 511, which cooperates with the end of the insertion tube 11 on one side of the first through hole 62 to limit the compression of the elastic member 54.

[0071] The limiting boss 511 cooperates with the end of the insertion tube 11 on one side of the first through hole 62 to control the insertion depth of the L-shaped pin 51, making it easier for the operator to perceive the insertion depth of the bent part 53 during the assembly process.

[0072] like Figure 6 , Figure 7 As shown, the second perforated structure 7 includes an elongated through hole disposed on the housing 2. A stop block 71 is disposed inside the elongated through hole. The stop block 71 and the inner wall of the elongated through hole form a second through hole 72. The cross-sectional dimensions of the second through hole 72 match the bent portion 53. The end of the stop block 71 and the elongated through hole form a stepped hole structure. The stop block 71 is used to limit the displacement of the bent portion 53 along the axial direction of the L-shaped pin 51, so that the elastic member 54 is in a compressed state. The inner wall of the elongated through hole is used to limit the swing of the bent portion 53.

[0073] Specifically, stepped hole structure such as Figure 7 As shown, this is an asymmetrical structure. When the L-shaped pin 51 is located in the stepped hole structure and contacts the stop block 71, the bent portion 53 is limited and aligned with the third through hole in the third perforation structure 8.

[0074] like Figure 8, Figure 9 As shown, the third perforated structure 8 includes a third through hole penetrating the base 3. The cross-sectional dimensions of the third through hole match the bending portion 53. A limiting groove 32 matching the bending portion 53 is provided on the base 3 on one side of the third perforated structure 8. When the bending portion 53 is located in the limiting groove 32, the bending portion 53 is connected to the base 3, so that the cover plate 1, the shell 2 and the base 3 are sequentially attached and fixed to form an arc-extinguishing chamber.

[0075] The matching of the cross-sectional dimensions of the hole with the bent portion 53 means that when the L-shaped pin 51 is inserted into the hole, the bent portion 53 can just pass through without being able to rotate significantly.

[0076] In the above structure, the structure through which the L-shaped pin 51 can pass includes, in sequence, a guide hole 61, a first through hole 62, a second through hole 72, a stepped hole structure, and a third through hole.

[0077] In this process, the bent portion 53 of the L-shaped pin 51 passes through the second through hole 72 and rotates, aligning the bent portion 53 with the stepped hole structure. Under the restoring force of the elastic element 54, it enters the stepped hole structure and is limited by the stop block 71 and the inner wall of the elongated through hole, thus assembling the cover plate 1 and the housing 2 into one piece. Figure 4 In step a, the bent part 53 is aligned with the third through hole on the base 3.

[0078] Then, after positioning and engaging the base 3 with the housing 2, the L-shaped pin 51 is pressed down and continues to move, further compressing the elastic element 54. After the L-shaped pin 51 passes through the third through hole, it is rotated so that the bent part 53 aligns with the limiting groove 32. Under the restoring force of the elastic element 54, the bent part 53 enters the limiting groove 32. Figure 4 In step b, the limiting pin assembly 5 sequentially attaches and fixes the cover plate 1, the shell 2, and the base 3 to form the arc extinguishing chamber.

[0079] The first through hole 62 in the first perforation structure 6 and the second through hole 72 in the second perforation structure 7 are arranged opposite to each other and offset from the third through hole. A limiting structure is provided at the end of the second through hole 72 to restrict the position of the bending part 53 and align the bending part 53 with the third through hole. This allows for the phased assembly of the arc-extinguishing chamber, improving the convenience and efficiency of operation.

[0080] The contact ends of the housing 2 and the base 3 have different sizes of slots 24 on adjacent sides. The base 3 is provided with a locking block 34 that cooperates with the slots 24. The positioning and cooperating structure between the base 3 and the housing 2 not only plays a guiding and positioning role, but also clearly distinguishes the assembly direction from the visual appearance, preventing mistakes.

[0081] like Figure 9As shown, a side stop 33 is provided between the third perforated structure 8 and the limiting groove 32. The side stop 33 separates the third perforated structure 8 and the limiting groove 32, thus serving as a limiting element. The side stop 33 is provided with an inclined surface that slopes towards the limiting groove 32, which serves as a guide during unlocking and facilitates the unlocking operation.

[0082] like Figure 7 , Figure 8 As shown, the housing 2 is provided with a positioning groove 22, which is located at the end of the second perforated structure 7; the base 3 is provided with a positioning protrusion 31 that matches the positioning groove 22, and the third through hole passes through the positioning protrusion 31; when the positioning protrusion 31 is inserted into the positioning groove 22, the second perforated structure 7 and the third through hole are aligned, which facilitates the fixed assembly of the housing 2 and the base 3.

[0083] Example 3:

[0084] This embodiment provides a contactor, including the contactor arc-extinguishing chamber assembly structure described in any of the above embodiments.

[0085] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A contactor arc-extinguishing chamber assembly structure, characterized in that: include The first perforated structure (6) is located on the cover plate (1) of the contactor, and the number is greater than or equal to two; The second perforated structure (7) is located on the housing (2) of the contactor and corresponds to the first perforated structure (6); The third perforation structure (8) is located on the base (3) of the contactor and corresponds to the second perforation structure (7); The limiting pin assembly (5) includes an L-shaped pin (51), one end of which is an operating end (52) and the other end of which is a bent portion (53). It also includes an elastic element (54), which is mounted on the L-shaped pin (51) and located between the bent portion (53) and the operating end (52). Among them, the L-shaped pin (51) is simultaneously inserted in the first perforation structure (6), the second perforation structure (7) and the third perforation structure (8). The elastic element (54) is located in the first perforation structure (6). The elastic element (54) is in a compressed state. The elastic element (54) elastically connects the operating end (52) to the cover plate (1). The bent part (53) is connected to the base (3), restricting the position of the cover plate (1) and the base (3) relative to the housing (2) along the axial direction of the L-shaped pin (51), so that the cover plate (1), the housing (2) and the base (3) are sequentially attached and fixed to form the arc-extinguishing chamber.

2. The contactor arc-extinguishing chamber assembly structure as described in claim 1, characterized in that: The operating end (52) is provided with a standard groove (521) that mates with a fastening tool.

3. The contactor arc-extinguishing chamber assembly structure as described in claim 1, characterized in that: The elastic element (54) is a spring, and the elastic element (54) is sleeved on the outside of the L-shaped pin (51).

4. The contactor arc-extinguishing chamber assembly structure as described in claim 1, characterized in that: The cover plate (1) is provided with a tube (11), and the housing (2) is provided with a slot (23) that matches the tube (11); The first perforated structure (6) includes a guide hole (61) located at the center of the insertion tube (11), the guide hole (61) is slidably engaged with the operating end (52), one end of the insertion tube (11) is open, and the other end of the insertion tube (11) is provided with a first through hole (62), the cross-sectional dimension of the first through hole (62) is smaller than the cross-sectional dimension of the guide hole (61), and the first through hole (62) matches the bent part (53); The second perforated structure (7) penetrates the bottom of the slot (23). When the insertion tube (11) is inserted into the slot (23), the second perforated structure (7) is aligned with the first through hole (62).

5. The contactor arc-extinguishing chamber assembly structure as described in claim 4, characterized in that: The L-shaped pin (51) is provided with a limiting boss (511), which cooperates with the end of the insertion tube (11) on one side of the first through hole (62) to limit the compression of the elastic member (54).

6. The contactor arc-extinguishing chamber assembly structure as described in claim 1, characterized in that: The second perforated structure (7) includes an elongated through hole disposed on the housing (2). A stop block (71) is disposed in the elongated through hole. The stop block (71) and the inner wall of the elongated through hole form a second through hole (72). The cross-sectional dimensions of the second through hole (72) match the bent portion (53). The end of the stop block (71) and the elongated through hole form a stepped hole structure. The stop block (71) is used to limit the displacement of the bent portion (53) along the axial direction of the L-shaped pin (51), so that the elastic element (54) is in a compressed state. The inner wall of the elongated through hole is used to limit the swing of the bent portion (53).

7. The contactor arc-extinguishing chamber assembly structure as described in claim 1, characterized in that: The third perforated structure (8) includes a third through hole penetrating the base (3). The cross-sectional dimensions of the third through hole match the bending part (53). A limiting groove (32) matching the bending part (53) is provided on the base (3) on one side of the third perforated structure (8). When the bending part (53) is located in the limiting groove (32), the bending part (53) is connected to the base (3), so that the cover plate (1), the shell (2) and the base (3) are sequentially fitted and fixed to form the arc extinguishing chamber.

8. The contactor arc-extinguishing chamber assembly structure as described in claim 7, characterized in that: A side stop (33) is provided between the third perforated structure (8) and the limiting groove (32).

9. The contactor arc-extinguishing chamber assembly structure as described in claim 7, characterized in that: The housing (2) is provided with a positioning groove (22), which is located at the end of the second perforated structure (7); The base (3) is provided with a positioning protrusion (31) that matches the positioning groove (22), and the third through hole penetrates the positioning protrusion (31); When the positioning protrusion (31) is inserted into the positioning groove (22), the second through hole structure (7) is aligned with the third through hole.

10. A contactor, characterized in that: Includes the contactor arc-extinguishing chamber assembly structure as described in any one of claims 1-9.

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