Fastening device

Abstract

The utility model provides a fastening device which comprises a body, a clamping groove is formed in the body, the clamping groove is provided with a first opening located in the top face of the body and a second opening located in one side of the body, and a fixed block and a movable block are fixedly connected into the second opening. The moving block is fixedly connected with a cross rod, a through hole allowing the cross rod to transversely move and penetrate through is formed in the fixed block, and the moving block is located between the first opening and the fixed block; a pressing rod penetrating into the second opening is further vertically and movably arranged on the body, and the pressing rod is fixedly connected with a pressing plate which is located in the second opening and can be connected with the fixed block and the movable block. The device further comprises an abutting assembly for providing abutting limiting for the pressing rod. According to the utility model, the problem that the leakage protector is accidentally separated when the leakage protector is positioned by the test fixture in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary positioning devices for leakage protectors, in particular to a fastening device. Background Art

[0002] After the leakage protector is manufactured, it needs to undergo a series of tests and can only be released for sale after passing the test. During the test process, it is generally necessary to position and clamp the leakage protector to ensure that the leakage protector remains stable during the test. In the prior art, a fastening device is generally used to position and clamp the circuit breaker. For example, a comprehensive test fixture for a leakage protector provided by a Chinese patent with authorization announcement number CN 220438504U can be used. The fixture includes a base, a plurality of movable grooves are opened on the upper surface of the base, and two symmetrically arranged movable blocks are slidably connected in each movable groove. A clamping plate is fixed on the upper surface of each movable block, and a double-headed screw is rotatably connected to the inner wall of each movable groove. The double-headed screw is provided with two sections of threads with equal pitch and opposite rotation direction. The two movable blocks are respectively threadedly connected to the two sections of the threads of the double-headed screw. A rotating assembly for driving the multiple double-headed screws to rotate is installed on the base. When the leakage protector needs to be fixed, the staff places the multiple leakage protectors between the multiple clamping plates respectively, and drives the multiple double-headed screws to rotate through the rotating assembly, so that the movable blocks drive the clamping plates to move closer to each other, thereby clamping the leakage protector, eliminating the tedious operation of manually opening the baffle, and facilitating the fixation of multiple leakage protectors. However, during the actual detection process, the leakage protector may also produce a disengagement displacement in the direction of the top surface, resulting in accidental disengagement. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention provides a fastening device, which solves the problem in the prior art that there is a risk of accidental disengagement when the test fixture is used to position the leakage protector.

[0004] According to an embodiment of the present utility model, a fastening device includes a main body, a card slot is provided in the main body, the card slot has a first opening located on the top surface of the main body and a second opening located on one side of the main body, a fixed block and a movable block are fixedly connected in the second opening, the movable block is fixedly connected to a cross bar and the fixed block is provided with a through hole for the cross bar to move horizontally through, and the movable block is located between the first opening and the fixed block; a pressure rod is also provided on the main body for vertical movement and passes through the second opening, the pressure rod is fixedly connected to a pressure plate located in the second opening and capable of connecting with both the fixed block and the movable block; and a tightening component is also included to provide a tightening limit for the pressure rod.

[0005] In the above embodiment, the first opening on the card slot is for the leakage protector to be placed in the card slot, and multiple leakage protectors can be placed at the same time. Then, the movable block is pushed by the cross bar so that the movable block is against the side wall of the leakage protector. The pressure rod is pressed downward so that the pressure plate is against the fixed block, the movable block and part of the top surface of the leakage protector, thereby realizing the positioning and clamping of the leakage protector. In this way, the leakage protector is limited on the side and top surfaces, the clamping is more stable, and there will be no accidental detachment in the upward direction, which solves the problem of the risk of accidental detachment of the test fixture for positioning the leakage protector in the prior art.

[0006] Furthermore, a positioning groove is provided in a concave manner on the bottom surface of the pressing plate, and a positioning portion which can be inserted into the positioning groove is provided in a convex manner on the top surface of the moving block.

[0007] Furthermore, a guide rod is fixedly connected to the top surface of the pressure plate, and a guide hole for the guide rod to move vertically is recessed on the inner top surface of the second opening.

[0008] Furthermore, a plurality of elastic top blocks are fixedly connected to a side of the movable block facing away from the fixed block.

[0009] Furthermore, an accommodating groove is provided in a recessed manner on an inner side surface of the card slot facing away from the second opening.

[0010] Furthermore, the pressure rod is fixedly connected to a first limiting ring located above the body, and a spring wound around the pressure rod is provided between the first limiting ring and the body.

[0011] Furthermore, a vertical mounting plate is fixedly connected to the main body, a horizontal mounting plate is fixedly connected to the vertical mounting plate, and a vertical adjustment screw hole is provided on the horizontal mounting plate. The tightening assembly includes an adjustment rod passing through the adjustment screw hole, and the adjustment rod is provided with a threaded section that cooperates with the thread of the adjustment screw hole, and the bottom surface of the adjustment rod is always against the top surface of the pressure rod.

[0012] Furthermore, a second limiting ring located below the threaded section is fixedly connected to the adjusting rod.

[0013] Furthermore, the adjusting rod is fixedly connected to a rotating handle located above the threaded section.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The movable block and the pressure plate respectively provide limit for the side and top surfaces of the leakage protector, so that the positioning and clamping of the leakage protector are more stable and will not accidentally disengage in the upward direction, thus solving the problem of the risk of accidental disengagement of the leakage protector positioning by the test fixture in the prior art; at the same time, the set pressure plate also plays the role of pressing and positioning the movable block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of the embodiment of the present utility model Figure 1 ;

[0017] Figure 2 Schematic diagram of the overall structure of the embodiment of the present utility model Figure 2 ;

[0018] In the above-mentioned drawings:

[0019] Body 1, card slot 2, first opening 3, second opening 4, leakage protector 5, fixed block 6, moving block 7, cross bar 8, through hole 9, pressing rod 10, pressing plate 11, positioning groove 12, positioning portion 13, guide rod 14, guide hole 15, elastic top block 16, receiving groove 17, first limiting ring 18, spring 19, vertical mounting plate 20, horizontal mounting plate 21, adjusting rod 22, threaded section 23, second limiting ring 24, rotating handle 25. Specific embodiments

[0020] The technical solutions in the present utility model will be further described below with reference to the drawings and embodiments.

[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model.

[0022] In an exemplary embodiment, such as Figure 1 , 2As shown in the figure, this embodiment provides a fastening device, which includes a body 1. A clamping groove 2 is provided inside the body 1. The clamping groove 2 has a first opening 3 on the top surface of the body 1 and a second opening 4 on one side of the body 1. The leakage protector 5 generally has a protrusion facing upward and a protrusion on one side. The first opening 3 is provided to allow the leakage protector 5 to enter the clamping groove 2 so that the protrusion on the side can enter the second opening 4; A fixed block 6 and a moving block 7 are fixedly connected in the second opening 4. The moving block 7 is fixedly connected with a cross bar 8, and a through hole 9 for the cross bar 8 to move horizontally through is provided on the fixed block 6. The moving block 7 is located between the first opening 3 and the fixed block 6. The fixed block 6 is fixed in the second opening 4. The top surface of the fixed block 6 is separated from the inner top surface of the second opening 4. The horizontal movement of the cross bar 8 in the through hole 9 can drive the moving block 7 to move horizontally in the second opening 4; A pressure rod 10 is vertically movably arranged on the body 1 and penetrates into the second opening 4. The pressure rod 10 is fixedly connected with a pressing plate 11 located in the second opening 4 and capable of contacting both the fixed block 6 and the moving block 7. That is, when the pressure rod 10 moves up and down, it can drive the pressing plate 11 to move up and down, so as to release and press the moving block 7 below; It also includes a top-tightening component for providing abutting and limiting to the pressure rod 10.

[0023] In the above embodiment, the first opening 3 on the clamping groove 2 allows the leakage protector 5 to be placed into the clamping groove 2. The length of the clamping groove 2 (i.e., the length in the direction parallel to the moving block 7) can be set to be relatively long, so that multiple leakage protectors 5 can be placed side by side in the clamping groove 2. Then, the moving block 7 is pushed by the cross bar 8 so that the side surface of the moving block 7 abuts against the side walls of all the leakage protectors 5. The pressure rod 10 is pressed downward so that the pressing plate 11 abuts against the top surfaces of the fixed block 6, the moving block 7 and part of the leakage protector 5, thereby realizing the positioning and clamping of the side and top surfaces of the leakage protector 5. In this way, the leakage protector 5 is limited both in the side and top directions, and the positioning and clamping are more stable. Therefore, the leakage protector 5 will not accidentally disengage in the upward direction or accidentally disengage in the horizontal direction, finally solving the problem that there is a risk of accidental disconnection in the positioning of the leakage protector 5 by the test fixture in the prior art.

[0024] Such as Figure 1 、 2As shown, in a further exemplary solution, a positioning groove 12 is recessed on the bottom surface of the pressing plate 11, and a positioning portion 13 that can be inserted into the positioning groove 12 is protruded on the top surface of the moving block 7. After the moving block 7 is pressed tightly against the leakage protector 5, the pressing plate 11 moves downward so that the positioning portion 13 is inserted into the positioning groove 12, which makes the positioning of the pressing plate 11 on the moving block 7 more stable, and indirectly makes the positioning of the leakage protector 5 more stable. At the same time, when the positioning and clamping are completed, the moving block 7 and the fixed block 6 are respectively located at both ends below the pressing plate 11, which provides better upward support for the pressing plate 11 and also helps to improve the stability of the pressing plate 11 itself. Further, a guide rod 14 is fixedly connected to the top surface of the pressing plate 11, and a guide hole 15 for the vertical movement of the guide rod 14 is recessed on the inner top surface of the second opening 4. The guide rod 14 and the pressing rod 10 can be located at both ends of the pressing plate 11, so that when the pressing rod 10 moves up and down, the guide rod 14 and the guide hole 15 cooperate to provide vertical guidance, and the up and down movement of the pressing plate 11 is more stable. Even further, a plurality of elastic top blocks 16 are fixedly connected to the side of the moving block 7 facing away from the fixed block 6. The elastic top blocks 16 directly abut against the side surface of the leakage protector 5 to realize the pressing of the moving block 7 against the side surface of the leakage protector 5. The elastic top blocks 16 can be rubber blocks. More specifically, a receiving groove 17 is recessed on the inner side surface of the card slot 2 facing away from the second opening 4, and a protrusion is correspondingly provided on the other side of the leakage protector 5. The receiving groove 17 is for the protrusion to be inserted into, which plays a better positioning role.

[0025] As Figure 1 , 2As shown, in a further exemplary solution, the pressing rod 10 is fixedly connected with a first limiting ring 18 located above the body 1. A spring 19 wound around the pressing rod 10 is further arranged between the first limiting ring 18 and the body 1. The spring 19 is limited between the first limiting ring 18 and the body 1 and can provide an elastic acting force so that when the pressing rod 10 can move upward when the top pressing component releases the abutting and limiting, and the pressing plate 11 is driven to move upward to release the abutting against the moving block 7 and the leakage protector 5. More specifically, a vertical mounting plate 20 is fixedly connected to the body 1, a horizontal mounting plate 21 is fixedly connected to the vertical mounting plate 20, and an adjusting screw hole vertically penetrating is arranged on the horizontal mounting plate 21. The top pressing component includes an adjusting rod 22 penetrating the adjusting screw hole, and a threaded section 23 in threaded fit with the adjusting screw hole is arranged on the adjusting rod 22, and the bottom surface of the adjusting rod 22 always abuts against the top surface of the pressing rod 10. The vertical mounting plate 20 and the horizontal mounting plate 21 provide a basis for adjustment. The threaded section 23 on the adjusting rod 22 can be located at the middle position thereof. When the threaded section 23 is in fit with the adjusting screw hole, the pressing plate 11 is at the lowest position. At this time, the moving block 7 abuts against the leakage protector 5 to realize the positioning clamping of the leakage protector 5. At this time, the spring 19 is compressed. When disassembly is required, the adjusting rod 22 is rotated to make the threaded section 23 withdraw upward from the adjusting screw hole. The spring 19 jacks up the first limiting ring 18 under the restoring action, and finally the pressing plate 11 and the moving block 7 are completely disengaged, that is, the abutting against the moving block 7 and the leakage protector 5 is released. Then, the moving block 7 and the leakage protector 5 are disengaged through the cross bar 8, and finally the positioning clamping of the leakage protector 5 is released, which is convenient for taking out the leakage protector 5. More specifically, a second limiting ring 24 is fixedly connected to the adjusting rod 22 and located below the threaded section 23. There is a large distance between the second limiting ring 24 and the threaded section 23 to ensure that the pressing plate 11 can completely release the abutting against the moving block 7 before the second limiting ring 24 abuts against the horizontal mounting plate 21, and the second limiting ring 24 restricts the adjusting rod 22 from disengaging from the horizontal mounting plate 21. Further, a rotating handle 25 is fixedly connected to the adjusting rod 22 and located above the threaded section 23. The adjusting rod 22 can be conveniently held and rotated through the rotating handle 25, so that the operation of the adjusting rod 22 is carried out conveniently.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A fastening device, characterized in that: The movable block is fixedly connected to the second opening, the movable block is fixedly connected to the cross bar and the fixed block is provided with a through hole for the cross bar to move horizontally through, the movable block is located between the first opening and the fixed block; the main body is also provided with a pressure rod that passes through the second opening for vertical movement, the pressure rod is fixedly connected to a pressure plate that is located in the second opening and can be connected with both the fixed block and the movable block; and a tightening component that provides a tightening limit for the pressure rod is also included.

2. The fastening device according to claim 1, wherein: The bottom surface of the pressing plate is concavely provided with a positioning groove, and the top surface of the moving block is convexly provided with a positioning portion that can be inserted into the positioning groove.

3. The fastening device according to claim 1, wherein: A guide rod is also fixedly connected to the top surface of the pressure plate, and a guide hole for the guide rod to move vertically is recessed on the inner top surface of the second opening.

4. The fastening device according to claim 1, wherein: A plurality of elastic top blocks are fixedly connected to the side of the moving block facing away from the fixed block.

5. The fastening device according to claim 4, characterized in that An accommodating groove is provided on an inner side surface of the card slot facing away from the second opening.

6. The fastening device according to any one of claims 1 to 5, characterized in that: The pressure rod is fixedly connected to a first limiting ring located above the body, and a spring wound around the pressure rod is further provided between the first limiting ring and the body.

7. The fastening device according to claim 6, wherein: The main body is also fixedly connected to a vertical mounting plate, the vertical mounting plate is also fixedly connected to a horizontal mounting plate, the horizontal mounting plate is also provided with a vertically penetrating adjustment screw hole, the tightening assembly includes an adjustment rod passing through the adjustment screw hole, and the adjustment rod is provided with a threaded section that cooperates with the thread of the adjustment screw hole, and the bottom surface of the adjustment rod is always against the top surface of the pressure rod.

8. The fastening device according to claim 7, wherein: The adjusting rod is also fixedly connected to a second limiting ring located below the threaded section.

9. The fastening device according to claim 7, wherein: The adjusting rod is also fixedly connected with a rotating handle located above the threaded section.

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