Anti-loosening clamping jig

Abstract

The utility model relates to the technical field of transformer assembly, in particular to an anti-loosening clamping jig which comprises a transformer body, a lower fixing set is arranged below the transformer body, and an upper fixing set is connected to the upper portion of the lower fixing set in a sliding mode. The lower fixing set comprises a fixing frame, a fixing block is fixedly connected to the side face of the fixing frame, a clamping plate is slidably connected to the interior of the fixing frame, a tension spring is fixedly connected to one side of the clamping plate, and a rotating shaft is fixedly connected to one end of the tension spring. The detachable lower fixing set and the detachable upper fixing set are additionally arranged outside the transformer body, meanwhile, the two sides of the transformer body are tightly fixed, loosening of the transformer body is prevented, later-period disassembly is more convenient, and the transformer body can be conveniently disassembled by adjusting the inner space of the lower fixing set and adjusting the position of the upper fixing set. Real-time modification according to the specification and size of the transformer body is achieved, and when a new transformer body is assembled, space constraint is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer assembly, in particular to a clamping fixture for preventing loosening. Background Art

[0002] The transformer consists of an iron core (or magnetic core) and a coil. The coil has two or more windings, of which the winding connected to the power supply is called the primary coil, and the remaining windings are called secondary coils. It can transform AC voltage, current and impedance. A simple iron core transformer consists of an iron core made of soft magnetic material and two coils with different numbers of turns on the iron core. The function of the iron core is to strengthen the magnetic coupling between the two coils. In order to reduce the eddy current and hysteresis loss in the iron, the iron core is made of laminated painted silicon steel sheets; there is no electrical connection between the two coils, and the coils are wound with insulated copper wire (or aluminum wire). The transformer is usually installed on the surface of the circuit board. In order to prevent the transformer from shifting after assembly, it is usually fixed by welding or fixing with glue, but the following problems usually occur after such fixing:

[0003] 1. Once the transformer is assembled, it is inconvenient to disassemble and replace it. If the transformer fails later, it is necessary to tear off the fixing glue little by little or melt the original welded part with an electric soldering iron during disassembly, which is very easy to damage the circuit board;

[0004] 2. There will be some errors in the specifications of different transformers. Generally, the transformer is directly installed on the surface of the circuit board. If it is necessary to replace it with a new transformer later, if the new transformer is too large and the original reserved size is insufficient, it will not be able to be assembled.

[0005] Therefore, a clamping fixture specially used for assembling transformers is needed. This fixture can not only assemble and fix the transformer, but also facilitate subsequent maintenance and replacement. Utility Model Content

[0006] The purpose of the utility model is to provide an anti-loosening clamping fixture to solve the problems mentioned in the above background technology that the transformer is inconvenient to disassemble and replace after assembly, different transformer specifications will have some errors, the original reserved size is not enough, and the new one will not be able to be assembled. In order to achieve the above purpose, the utility model provides the following technical solutions: the anti-loosening clamping fixture includes a transformer body, a lower fixing group is provided below the transformer body, and an upper fixing group is slidably connected above the lower fixing group;

[0007] The lower fixing group comprises a fixing frame, a fixing block is fixedly connected to the side of the fixing frame, a clamp is slidably connected to the inside of the fixing frame, a tension spring is fixedly connected to one side of the clamp, one end of the tension spring is fixedly connected to a rotating shaft, a gear is fixedly connected to the top of the rotating shaft, and a clamp is inserted into one side of the gear;

[0008] The upper fixing group comprises a slide plate, the inner thread of the slide plate is connected with a threaded rod, and one end of the threaded rod is plugged with a pressing plate.

[0009] Further preferably, the tension spring and the clamping plate are arranged as a group, with two groups in total, and the two tension springs are respectively located on both sides of the rotating shaft.

[0010] Further preferably, a certain gap is provided between the gear and the fixed frame, and the clamping strip and the fixed frame are connected in a rotational manner.

[0011] Further preferably, the top of the fixing frame is configured as an open structure.

[0012] Further preferably, a sliding groove is provided on the side of the fixing frame, and the sliding plate is connected to the fixing frame in a sliding manner.

[0013] Further preferably, the pressing plate is made of rubber material, and the bottom of the pressing plate is tightly fitted to the top of the transformer body.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, by adding a detachable lower fixing group and an upper fixing group on the outside of the transformer body, when the transformer body is installed from top to bottom, when the clamping plate is squeezed, the tension spring has a certain elastic force. Under the action of the elastic force, the clamping plate tightly presses and fixes the two sides of the transformer body, and the pressure plate is pressed down, so that the bottom of the pressure plate is tightly pressed against the top of the transformer body, and the upper and lower sides and the front and rear sides are doubly fixed to prevent it from loosening, and the later disassembly is also more convenient.

[0016] In the utility model, by adjusting the internal space of the lower fixing group and the position of the upper fixing group, when the gear rotates clockwise, the tension springs on both sides are driven to shorten inward at the same time, and further drive the clamping plates on both sides to move closer to the middle, and vice versa, they are extended to both sides, thereby realizing real-time modification according to the specifications of the transformer body, and being free from space constraints when assembling a new transformer body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the utility model after the transformer body is removed;

[0019] Figure 3 This is a schematic diagram of the cross-sectional structure of the lower fixing group of the utility model;

[0020] Figure 4 For this utility model Figure 2 Enlarged structural diagram at A in the middle.

[0021] In the figure: 1. transformer body; 2. lower fixing group; 201. fixing frame; 202. fixing block; 203. clamping plate; 204. tension spring; 205. rotating shaft; 206. gear; 207. clamping strip; 3. upper fixing group; 301. slide plate; 302. threaded rod; 303. pressing plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technical personnel in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figures 1 to 4 The utility model provides a technical solution: an anti-loosening clamping fixture, comprising a transformer body 1, a lower fixing group 2 is provided below the transformer body 1, and an upper fixing group 3 is slidably connected above the lower fixing group 2;

[0024] The lower fixing group 2 includes a fixing frame 201, a fixing block 202 is fixedly connected to the side of the fixing frame 201, a clamping plate 203 is slidably connected inside the fixing frame 201, a tension spring 204 is fixedly connected to one side of the clamping plate 203, one end of the tension spring 204 is fixedly connected to a rotating shaft 205, a gear 206 is fixedly connected to the top of the rotating shaft 205, and a clamping strip 207 is inserted into one side of the gear 206;

[0025] The upper fixing group 3 includes a slide plate 301 . The inner thread of the slide plate 301 is connected with a threaded rod 302 . One end of the threaded rod 302 is plugged with a pressing plate 303 .

[0026] In this embodiment, Figure 1 As shown, the tension spring 204 and the clamping plate 203 are set as a group, and there are two groups in total, and the two tension springs 204 are respectively located on both sides of the rotating shaft 205; it should be noted that the two tension springs 204 are respectively located on both sides of the rotating shaft 205, and the rotating shaft 205 is rotatable. When the gear 206 rotates, it drives the rotating shaft 205 to rotate. When the gear 206 rotates clockwise, the tension springs 204 on both sides are driven to shorten inward at the same time, and further drive the clamping plates 203 on both sides to move closer to the middle. If the size of the transformer body 1 is small, the rotation angle of the gear 206 can be increased. When it rotates counterclockwise, under the elastic force of the tension spring 204, the clamping plates 203 extend to both sides, and the spacing between the clamping plates 203 can be flexibly adjusted according to the size of the transformer body 1.

[0027] In this embodiment, Figure 3 and Figure 4As shown, a certain gap is provided between the gear 206 and the fixed frame 201, and the clamping strip 207 and the fixed frame 201 are connected in a rotating manner; it should be noted that a certain gap is provided between the gear 206 and the fixed frame 201, and when the gear 206 rotates, it is not affected by the fixed frame 201, and the gear 206 and the rotating shaft 205 are completely embedded in the fixed frame 201, and when the gear 206 rotates to a certain angle and the spacing of the splint 203 is adjusted, the clamping strip 207 is rotated and rotated 90°. The clamping strip 207 rotates along the fixed frame 201, and the other end of the clamping strip 207 is inserted into the gap of the gear 206, tightly against the edge of the gear 206 to prevent the gear 206 from loosening, and further fix the splint 203.

[0028] In this embodiment, Figure 1 As shown, the top of the fixing frame 201 is set as an open structure; it should be noted that the top of the fixing frame 201 is set as an open structure, and the transformer body 1 can be directly pressed down along the top opening of the fixing frame 201 for installation. When the transformer body 1 is installed from top to bottom, when the clamping plate 203 is squeezed, the tension spring 204 has a certain elastic force at this time. Under the action of the elastic force, the clamping plate 203 tightly presses and fixes the two sides of the transformer body 1.

[0029] In this embodiment, Figure 1 and Figure 3 As shown, a sliding groove is provided on the side of the fixed frame 201, and a sliding connection is adopted between the slide plate 301 and the fixed frame 201; it should be noted that after the fixing group 2 fixes both sides of the transformer body 1, the slide plate 301 is slid along the sliding groove on the side of the fixed frame 201 until the pressure plate 303 is directly above the transformer body 1.

[0030] In this embodiment, Figure 1 As shown, the pressing plate 303 is made of rubber material, and the bottom of the pressing plate 303 fits tightly against the top of the transformer body 1; it should be noted that after the pressing plate 303 slides to the top of the transformer body 1, the threaded rod 302 is rotated clockwise to drive the pressing plate 303 to press down. The pressing plate 303 is made of rubber material and has a certain anti-slip property. At the same time, it can also protect the top of the transformer body 1. After the bottom of the pressing plate 303 is tightly against the top of the transformer body 1, the threaded rod 302 can be stopped from rotating. At this time, the pressing plate 303 tightly presses and fixes the upper and lower parts of the transformer body 1.

[0031] The use method and advantages of the utility model: When the anti-loosening clamping fixture is used, the working process is as follows:

[0032] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, firstly, the fixing block 202 is bolted to fix the fixing frame 201 on the surface of the circuit board, and the lower fixing group 2 is further fixed. Then, the spacing of the clamping plates 203 is adjusted according to the size of the transformer body 1. When the gear 206 rotates clockwise, the lower shaft 205 rotates clockwise at the same time, driving the tension springs 204 on both sides to shorten inward at the same time, and further driving the clamping plates 203 on both sides to move closer to the middle. When the clamping plates 203 are close to the appropriate position, the transformer body 1 is installed from top to bottom in the fixing frame 201. When the transformer body 1 is installed, the clamping plates 203 on both sides are squeezed, and the tension springs 204 have a The clamping plate 203 is pressed against the upper and lower parts of the transformer body 1 and fixed with the clamping plate 303. After the transformer body 1 is fully inserted and fixed, the slide plate 301 is finally slid along the slide groove on the side of the fixing frame 201 until the pressing plate 303 is directly above the transformer body 1. The threaded rod 302 is rotated clockwise to drive the pressing plate 303 to press down. After the bottom of the pressing plate 303 is tightly pressed against the top of the transformer body 1, the threaded rod 302 can be stopped from rotating. At this time, the pressing plate 303 presses the upper and lower parts of the transformer body 1 tightly and fixes them, and cooperates with the lower fixing group 2 to achieve a double fixing effect to prevent it from loosening.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. Technical staff in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An anti-loosening clamping fixture, comprising a transformer body (1), characterized in that: A lower fixing group (2) is provided below the transformer body (1), and an upper fixing group (3) is slidably connected above the lower fixing group (2); The lower fixing group (2) comprises a fixing frame (201), a fixing block (202) is fixedly connected to the side of the fixing frame (201), a clamping plate (203) is slidably connected inside the fixing frame (201), a tension spring (204) is fixedly connected to one side of the clamping plate (203), one end of the tension spring (204) is fixedly connected to a rotating shaft (205), a gear (206) is fixedly connected to the top of the rotating shaft (205), and a clamping strip (207) is inserted into one side of the gear (206); The upper fixing group (3) comprises a slide plate (301), the inner thread of the slide plate (301) is connected to a threaded rod (302), and one end of the threaded rod (302) is plugged with a pressing plate (303).

2. The anti-loosening clamping fixture according to claim 1, characterized in that: The tension spring (204) and the clamping plate (203) are arranged as a group, and two groups are provided in total, and the two tension springs (204) are respectively located on both sides of the rotating shaft (205).

3. The anti-loosening clamping fixture according to claim 1, characterized in that: A certain gap is provided between the gear (206) and the fixed frame (201), and the clamping strip (207) and the fixed frame (201) are connected in a rotational manner.

4. The anti-loosening clamping fixture according to claim 1, characterized in that: The top of the fixing frame (201) is configured as an open structure.

5. The anti-loosening clamping fixture according to claim 1, characterized in that: A sliding groove is provided on the side of the fixed frame (201), and the sliding plate (301) and the fixed frame (201) are connected in a sliding manner.

6. The anti-loosening clamping fixture according to claim 1, characterized in that: The pressing plate (303) is made of rubber material, and the bottom of the pressing plate (303) is tightly fitted to the top of the transformer body (1).

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