Terminal box door opening and closing mechanism

Abstract

The utility model relates to the technical field of distribution boxes, in particular to a terminal box door opening and closing mechanism which comprises a lock cylinder, an outer shell, an output rotating rod, an extension shaft and a rotating lock plate, the lock cylinder and the output rotating rod are arranged in the outer shell close to the two ends respectively, a key hole is formed in the lock cylinder, and the extension shaft is arranged in the key hole. A corresponding key is inserted into the key hole and rotates to drive the output rotating rod to rotate; one side of the output rotating rod is connected with an extension shaft, a locking screw hole is formed in the position, close to the center, of one side of the extension shaft, a conical counterbore corresponding to the locking screw hole is formed in one side of the rotating locking plate, protruding blocks are arranged at the positions, close to the two ends, of the end of the extension shaft, and positioning holes are formed in one sides of the protruding blocks in a penetrating mode. A positioning column is arranged on one side of the end part of the rotary locking plate; one side of the lock plate is provided with a wear-resistant structure, the worn lock plate is easy to replace, the service life is long, and the reliable effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of distribution boxes, and particularly relates to a terminal box door switch mechanism. Background Art

[0002] The door switch mechanism in a terminal box (or junction box) is a device used to control the opening and closing of the box door. It is an important part to ensure the safety and convenient operation of electrical equipment. Among them, the mechanism that rotates through a keyhole is relatively common.

[0003] In the past, the lock piece part of the switch mechanism needed to contact the inner wall of the box body during use, and often rubbed against the inner wall of the box body during rotation, resulting in a reduced service life. Moreover, the lock piece and the output shaft rod of the lock are integrally arranged, and it is not easy to disassemble after wear, making the reliable effect of the switch mechanism during use not good enough. Content of the Utility Model

[0004] Aiming at the problems in the prior art, the utility model provides a terminal box door switch mechanism. One side of the lock piece has a wear-resistant structure, and it is easy to replace the worn lock piece, with a long service life and a good reliable effect.

[0005] The technical solution adopted by the utility model to solve its technical problems is a terminal box door switch mechanism, which includes a lock core, an outer shell, an output rotating rod, an extension shaft and a rotating lock piece. The lock core and the output rotating rod are respectively arranged near both ends inside the outer shell. A keyhole is opened on the lock core. After inserting the corresponding key into the keyhole and rotating it, the output rotating rod can be driven to rotate;

[0006] One side of the output rotating rod is connected with an extension shaft. A locking screw hole is opened near the center on one side of the extension shaft. A tapered counterbore corresponding to the locking screw hole is opened on one side of the rotating lock piece. Convex blocks are arranged at both ends near the end of the extension shaft. A positioning hole is penetrated through one side of the convex block. A positioning column is arranged at one end of the rotating lock piece. The end of the positioning column passes through the corresponding positioning hole. A strip-shaped installation groove is opened at one end of the rotating lock piece away from the positioning column. A strip-shaped rubber block is arranged in the strip-shaped installation groove. The end of the strip-shaped rubber block is connected with a circular rubber block. A circular groove is opened at one end of the rotating lock piece near the strip-shaped installation groove. The circular rubber block is located in the circular groove.

[0007] By adopting the above technical solution, it is convenient to install the strip-shaped rubber block and the circular rubber block through the strip-shaped installation groove and the circular groove. A part of the circular rubber block protrudes from the circular groove. By contacting the inner wall of the terminal box with the circular rubber block, the wear-resistant effect can be improved. And by loosening the tapered countersunk screw passing through the locking screw hole and the tapered counterbore, the rotating lock piece can be replaced.

[0008] Specifically, a positioning groove is provided at the top of the strip-shaped rubber block, and positioning blocks are provided at the top of the strip-shaped installation groove. The positioning blocks are all located in the corresponding positioning grooves.

[0009] Specifically, an annular decorative block is provided on the outer wall of the housing near the end of the lock core.

[0010] Specifically, a threaded groove is provided on the outside of the housing, and a mounting flange is sleeved on the outside of the housing. One end of the mounting flange is provided with a strip-shaped block, and a mounting screw hole corresponding to the threaded groove is provided at one end of the top of the strip-shaped block.

[0011] By adopting the above technical solution, by passing a screw through the mounting screw hole and the threaded groove provided on the housing, it is convenient to fix the strip-shaped block on the outer wall of the housing, so as to conveniently fix the mounting flange on the outside of the housing.

[0012] Specifically, reinforcing ribs are provided at the connection corners of one end of the mounting flange and the strip-shaped block, and reserved holes are provided through the side of the mounting flange near the corners.

[0013] Specifically, a convex edge is provided on the inner wall of the strip-shaped installation groove near the edge.

[0014] By adopting the above technical solution, after the strip-shaped rubber block is inserted into the strip-shaped installation groove for installation, the convex edge can improve the limiting effect on the strip-shaped rubber block.

[0015] Advantages of the present utility model:

[0016] (1) For the terminal box door switch mechanism of the present utility model, since a part of the circular rubber block protrudes from the circular groove, the contact between the circular rubber block and the inner wall of the terminal box can improve the wear resistance effect. Moreover, the rotating lock piece can be replaced by the cooperation of the locking screw hole and the tapered counterbore. One side of the lock piece of this switch mechanism has a wear-resistant structure, and it is easy to replace the worn lock piece, with a long service life and good reliability effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0018] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0019] Figure 2 is a schematic diagram of the connection structure between the extension shaft and the rotating lock piece of the present utility model;

[0020] Figure 3 is a schematic diagram of the rotating lock piece structure of the present utility model;

[0021] Figure 4Schematic cross-sectional view of the rotating lock piece and the strip-shaped rubber block of the present utility model;

[0022] Figure 5 Schematic view of the convex edge structure of the present utility model.

[0023] In the figure: 1, lock core; 2, keyhole; 3, annular decorative block; 4, outer housing; 5, output rotating rod; 6, extension shaft; 7, strip-shaped block; 8, mounting screw hole; 9, reinforcing rib; 10, convex block; 11, positioning hole; 12, rotating lock piece; 13, positioning column; 14, strip-shaped rubber block; 15, positioning groove; 16, strip-shaped mounting groove; 17, circular groove; 18, circular rubber block; 19, locking screw hole; 20, conical counterbore; 21, mounting flange; 22, reserved hole; 23, positioning block; 24, convex edge. Specific embodiments

[0024] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In order to have a wear-resistant structure on one side of the lock piece, and it is easy to replace the worn lock piece, with a long service life and good reliability, as Figures 1-5 shown, a terminal box door switch mechanism of the present utility model includes a lock core 1, an outer housing 4, an output rotating rod 5, an extension shaft 6 and a rotating lock piece 12. The lock core 1 and the output rotating rod 5 are respectively arranged near both ends inside the outer housing 4. A keyhole 2 is opened on the lock core 1. After inserting the corresponding key into the keyhole 2 and rotating it, the output rotating rod 5 can be driven to rotate;

[0026] One side of the output rotating rod 5 is connected with an extension shaft 6. A locking screw hole 19 is opened near the center on one side of the extension shaft 6. A conical counterbore 20 corresponding to the locking screw hole 19 is opened on one side of the rotating lock piece 12. Convex blocks 10 are arranged at both ends near the end of the extension shaft 6. A positioning hole 11 is opened through one side of the convex block 10. A positioning column 13 is arranged at one side of the end of the rotating lock piece 12. The ends of the positioning columns 13 pass through the corresponding positioning holes 11 respectively. A strip-shaped mounting groove 16 is opened at one end of the rotating lock piece 12 away from the positioning column 13. A strip-shaped rubber block 14 is arranged in the strip-shaped mounting groove 16. A circular rubber block 18 is connected to the end of the strip-shaped rubber block 14. A circular groove 17 is opened at one end of the rotating lock piece 12 near the strip-shaped mounting groove 16. The circular rubber block 18 is located in the circular groove 17.

[0027] In use, the bar-shaped rubber block 14 and the circular rubber block 18 are conveniently installed through the bar-shaped installation groove 16 and the circular groove 17. A part of the circular rubber block 18 protrudes from the circular groove 17. By contacting the inner wall of the terminal box through the circular rubber block 18, the wear resistance effect can be improved. Moreover, by loosening the countersunk conical screw passing through the locking screw hole 19 and the countersunk conical hole 20, the rotating lock piece 12 can be replaced.

[0028] Exemplarily, as Figure 4 shown, the present utility model further includes that a positioning groove 15 is provided at the top of the bar-shaped rubber block 14, and positioning blocks 23 are provided at the top of the bar-shaped installation groove 16, and the positioning blocks 23 are all located in the corresponding positioning grooves 15.

[0029] In use, by the cooperation of the positioning post 13 and the positioning groove 15, the stable effect of installing the bar-shaped rubber block 14 in the bar-shaped installation groove 16 can be effectively improved.

[0030] Exemplarily, as Figure 1 shown, the present utility model further includes that an annular decorative block 3 is provided on the outer wall of the outer shell 4 near the end of the lock core 1.

[0031] In use, through the annular decorative block 3, the end of the outer shell 4 can be conveniently decorated, and the aesthetic effect of the mechanism during installation can be improved.

[0032] Exemplarily, as Figures 1-2 shown, the present utility model further includes that a threaded groove is provided on the outside of the outer shell 4, an installation flange 21 is sleeved on the outside of the outer shell 4, a bar-shaped block 7 is provided at one end of the installation flange 21, and an installation screw hole 8 corresponding to the threaded groove is provided at one end of the top of the bar-shaped block 7.

[0033] In use, by passing a screw through the installation screw hole 8 and the threaded groove provided on the outer shell 4, the bar-shaped block 7 can be conveniently fixed on the outer wall of the outer shell 4, so as to conveniently fix the installation flange 21 on the outside of the outer shell 4.

[0034] Exemplarily, as Figures 1-2 shown, the present utility model further includes that reinforcing ribs 9 are provided at the connection corners of one end of the installation flange 21 and the bar-shaped block 7, and reserved holes 22 are provided through the sides of the installation flange 21 near the corners.

[0035] In use, through the reinforcing ribs 9, the overall stable effect of the connection between the bar-shaped block 7 and the installation flange 21 can be effectively improved.

[0036] Exemplarily, as Figures 4-5 shown, the present utility model further includes that a convex edge 24 is provided on the inner wall of the bar-shaped installation groove 16 near the edge.

[0037] During use, after the strip-shaped rubber block 14 is snapped into the strip-shaped installation groove 16 for installation through the convex edge 24, the limiting effect on the strip-shaped rubber block 14 can be improved.

[0038] When the present utility model is in use, after a person inserts a key into the keyhole 2 opened on the lock core 1, the output rotating rod 5 and the extension shaft 6 are driven to rotate. The countersunk screw passes through the conical countersunk hole 20 and is connected to the locking screw hole 19, which facilitates fixing the rotating lock piece 12 on one side of the extension shaft 6. Through the cooperation of the positioning hole 11 and the positioning post 13, pre-positioning of the rotating lock piece 12 can be facilitated before it is fixed.

[0039] By passing a screw through the installation screw hole 8 and the threaded groove opened on the outer housing 4, the strip-shaped block 7 can be conveniently fixed on the outer wall of the outer housing 4, thereby facilitating the fixing of the installation flange 21 on the outside of the outer housing 4. By passing an external screw through the reserved hole 22 opened on the installation flange 21, the installation flange 21 can be conveniently fixed on the inner wall of the terminal box.

[0040] The strip-shaped rubber block 14 and the circular rubber block 18 can be conveniently installed through the strip-shaped installation groove 16 and the circular groove 17. A part of the circular rubber block 18 protrudes from the circular groove 17. By contacting the inner wall of the terminal box through the circular rubber block 18, the wear resistance effect can be improved. Moreover, by loosening the conical countersunk screw passing through the locking screw hole 19 and the conical countersunk hole 20, the rotating lock piece 12 can be replaced. One side of the lock piece of this switch mechanism has a wear-resistant structure, and it is easy to replace the worn lock piece, with a long service life and good reliability.

[0041] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of protection required by the present utility model. The scope of protection required by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A terminal box door switch mechanism, characterized in that It includes a lock core (1), an outer housing (4), an output rotating rod (5), an extension shaft (6) and a rotating lock piece (12). The lock core (1) and the output rotating rod (5) are respectively arranged near both ends inside the outer housing (4). A key hole (2) is formed in the lock core (1). After inserting a corresponding key into the key hole (2) and rotating it, the output rotating rod (5) can be driven to rotate. One side of the output rotating rod (5) is connected with an extension shaft (6). A locking screw hole (19) is formed near the center on one side of the extension shaft (6). A tapered counterbore (20) corresponding to the locking screw hole (19) is formed on one side of the rotating lock piece (12). Protrusions (10) are arranged near both ends of the end of the extension shaft (6). A positioning hole (11) is formed through one side of each protrusion (10). A positioning post (13) is arranged on one side of the end of the rotating lock piece (12). The ends of the positioning posts (13) pass through the corresponding positioning holes (11). A strip-shaped mounting groove (16) is formed at one end of the rotating lock piece (12) away from the positioning post (13). A strip-shaped rubber block (14) is arranged in the strip-shaped mounting groove (16). A circular rubber block (18) is connected to the end of the strip-shaped rubber block (14). A circular groove (17) is formed at one end of the rotating lock piece (12) near the strip-shaped mounting groove (16). The circular rubber block (18) is located in the circular groove (17).

2. The terminal box door switch mechanism according to claim 1, characterized in that, A positioning groove (15) is formed at the top of the strip-shaped rubber block (14). A positioning block (23) is formed at the top of the strip-shaped mounting groove (16). The positioning blocks (23) are all located in the corresponding positioning grooves (15).

3. The switching mechanism for the terminal box door according to claim 1, characterized in that, An annular decorative block (3) is arranged on the outer wall of the outer housing (4) near the end of the lock core (1).

4. The switching mechanism for the terminal box door according to claim 1, wherein, A threaded groove is formed on the outside of the outer housing (4). A mounting flange (21) is sleeved on the outside of the outer housing (4). A strip-shaped block (7) is arranged at one end of the mounting flange (21). A mounting screw hole (8) corresponding to the threaded groove is formed at one end of the top of the strip-shaped block (7).

5. The switch mechanism for the terminal box door according to claim 4, characterized in that Reinforcing ribs (9) are arranged at the connection corners of one end of the mounting flange (21) and the strip-shaped block (7). Reserved holes (22) are formed through near the corners on one side of the mounting flange (21).

6. The switching mechanism of the terminal box door according to claim 1, wherein, A convex edge (24) is arranged on the inner wall of the strip-shaped mounting groove (16) near the edge.

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