Back clamp locking structure capable of preventing screw from loosening

Abstract

The utility model relates to a back splint locking structure for preventing screws from loosening, which comprises a back plate, a splint is hinged on the back surface of the back plate through a rotating shaft, a back plate hinging part and a splint hinging part are correspondingly arranged on two opposite surfaces of the back plate and the splint, and a first rotating shaft through hole and a second rotating shaft through hole are correspondingly arranged on the back plate hinging part and the splint hinging part. The first rotating shaft through hole and the second rotating shaft through hole are coaxially arranged, the rotating shaft comprises a counter-locking nut and a screw, the counter-locking nut is inserted into the first rotating shaft through hole and the second rotating shaft through hole and is in threaded connection with the screw, the counter-locking nut is sleeved with a torsional spring, and the back plate and the clamping plate are hinged together through the rotating shaft composed of the counter-locking nut and the screw. The production difficulty of the back clamp is reduced, the counter-locking nut and the screw are loosened after the back clamp is used for a long time, the counter-locking nut and the screw can be screwed down again by rotating the counter-locking nut and the screw relatively, and the situation that the counter-locking nut and the screw are loosened and use of the back clamp is affected is avoided.

Description

Technical Field

[0001] The utility model relates to the field of back clips, and more specifically to a back clip locking structure for preventing screws from loosening. Background Art

[0002] In order to facilitate carrying or to fix the handheld device in an external environment, some handheld products are usually equipped with back clips to meet such requirements, such as law enforcement recorders, walkie-talkies and mobile phone protective cases.

[0003] The existing back clip hinges the back plate and the clamping plate together by pin riveting. For example, a Chinese utility model patent discloses a wireless microphone back clip structure (application number CN202122925698.6), which is riveted through a cross bar, that is, the clamping plate and the opening piece are hinged together by pin riveting. However, this requires that the fitting tolerance of the cross bar and the through holes on the opening piece during riveting and assembly must be a tight fitting tolerance. If the fitting tolerance is too loose, the cross bar will fall off, and if the tight fitting tolerance of the cross bar and the through holes on the opening piece is too tight, riveting will be difficult or even impossible, which makes the production of the back clip difficult. As the back clip is used for a long time, the cross bar and the through holes on the opening piece wear against each other and become loose, affecting the use of the back clip, and even causing the riveted joint between the cross bar and the opening piece to break, making the back clip unusable. Utility Model Content

[0004] In view of the above-mentioned defects of the prior art, a back clip locking structure for preventing screws from loosening is provided.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a back-clamp locking structure for preventing screws from loosening, comprising a back plate, a clamping plate hinged on the back side of the back plate through a rotating shaft, a back plate hinge part and a clamping plate hinge part are correspondingly arranged on two opposite surfaces of the back plate and the clamping plate, a first rotating shaft through hole and a second rotating shaft through hole are correspondingly arranged on the back plate hinge part and the clamping plate hinge part, the first rotating shaft through hole and the second rotating shaft through hole are coaxially arranged, the rotating shaft comprises a locking nut and a screw, the locking nut is inserted in the first rotating shaft through hole and the second rotating shaft through hole and is threadedly connected to the screw, a torsion spring is sleeved on the locking nut, one end of the torsion spring is connected to the back plate, and the other end of the torsion spring is connected to the clamping plate.

[0006] Preferably, the splint is provided with a protruding piece on the surface where the splint hinge portion is located, and the protruding piece and the splint hinge portion are arranged on opposite sides of the splint.

[0007] Preferably, an elastic anti-slip pad is provided on the surface of the protruding piece opposite to the back plate.

[0008] Preferably, the ends of the locking nut and the screw that are away from each other are both butterfly-shaped structures.

[0009] Preferably, the clamping plate is provided with a rectangular clip through hole on the surface opposite to the back plate, a sliding member is slidably arranged in the clip through hole, the sliding direction of the sliding member is perpendicular to the axis of the clip through hole, a sliding member slot is provided on one end of the sliding direction of the sliding member, the axis of the sliding member slot is perpendicular to the axis of the clip through hole, a spring is provided between the end of the sliding member away from the sliding member slot and the clip through hole, and a back plate buckle is provided on the back plate which is engaged in the sliding member slot when the back clip is opened.

[0010] Preferably, a sliding groove and a sliding block that slide in cooperation with each other are provided between the sliding member and the clip through hole, and the axial direction of the sliding groove is consistent with the sliding direction of the sliding member.

[0011] Preferably, there are two splint hinges, which are arranged side by side with an interval, and there are two back panel hinges, which are arranged side by side with an interval, and both back panel hinges are located between the two splint hinges.

[0012] Preferably, the midpoint of the line connecting the centers of the two splint hinge parts is located in the middle close to the edge.

[0013] The beneficial effects of the utility model are that the back plate and the clamping plate are hinged together by a rotating shaft composed of a locking nut and a screw, and there is no need to use a riveting process, which reduces the difficulty of producing the back clamp. When the back clamp is used for a long time and the locking nut and the screw become loose, the locking nut and the screw can be retightened by allowing the locking nut and the screw to rotate relative to each other, thus avoiding the locking nut and the screw from becoming loose and affecting the use of the back clamp. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the back structure of an embodiment of the utility model;

[0015] Figure 2 This utility model embodiment Figure 1 A magnified schematic diagram of the middle A area;

[0016] Figure 3 It is a side structural schematic diagram of an embodiment of the utility model;

[0017] Figure 4 It is a schematic diagram of the cross-sectional structure of the hinged part of the embodiment of the utility model;

[0018] Figure 5 This is a schematic diagram of the back plate and the clamping plate structure of the utility model embodiment;

[0019] Figure 6 It is a schematic diagram of the structure of the sliding member of the embodiment of the utility model.

[0020] Figure numerals: 1 back plate, 10 back plate hinge part, 11 first rotating shaft through hole, 2 splint, 20 splint hinge part, 21 second rotating shaft through hole, 3 rotating shaft, 30 pair of locking nuts, 31 screws, 4 torsion springs, 5 protrusions, 50 elastic anti-slip pads, 6 clip through holes, 60 sliding grooves, 7 sliding parts, 70 sliding part slots, 8 springs, 9 back plate buckles. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the following will be clearly and completely described in combination with the technical solution in the embodiments of the utility model. Obviously, the described embodiments are partial embodiments of the utility model, rather than all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the utility model. In addition, the directional terms mentioned in the utility model, such as "up", "down", "front", "back", "left", "right", "inside", "outside", etc., are only referenced to the directions of the attached diagrams. The directional terms used are for better and clearer explanation and understanding of the utility model, rather than indicating or implying the orientation that the utility model must have, and therefore cannot be understood as a limitation on the utility model.

[0022] The utility model is implemented as follows Figures 1 to 6As shown in, a back clamp locking structure for preventing screws from loosening comprises a vertical back plate 1, a vertical clamping plate 2 is hinged on the back side of the back plate 1 through a rotating shaft 3, two back plate hinge parts 10 and two clamping plate hinge parts 20 are correspondingly arranged on two opposite surfaces of the back plate 1 and the clamping plate 2, the two clamping plate hinge parts 20 are arranged side by side in the left-right direction, the midpoint of the center connection line of the two clamping plate hinge parts 20 is located in the middle of the clamping plate 2 near the upper end, the two back plate hinge parts 10 are arranged side by side in the left-right direction, the two back plate hinge parts 10 are located between the two clamping plate hinge parts 20, each of the back plate hinge parts 10 and the clamping plate hinge parts 20 is correspondingly provided with a first rotating shaft through hole 11 and a second rotating shaft through hole 21, the first rotating shaft through hole 11 and the second rotating shaft through hole 21 are coaxially arranged, the rotating shaft 3 comprises a locking nut 30 and a screw 31, the locking nut 30 is inserted into the first rotating shaft through hole 11 The locking nut 30 is inserted into the first rotating shaft through hole 11 and the second rotating shaft through hole 21 and is threadedly connected with the screw 31, that is, the locking nut 30 passes through the first rotating shaft through hole 11 and the second rotating shaft through hole 21 at one end in turn, and then passes through the second rotating shaft through hole 21 at the other end and is inserted into the first rotating shaft through hole 11, and is threadedly connected with the screw 31 in the first rotating shaft through hole 11. The locking nut 30 is sleeved with a torsion spring 4, and the torsion spring 4 is located between the two back plate hinge parts 10. One end of the torsion spring 4 is connected to the back plate 1, and the other end of the torsion spring 4 is connected to the clamping plate 2. The back plate 1 and the clamping plate 2 are hinged together by the rotating shaft 3 composed of the locking nut 30 and the screw 31, which reduces the production difficulty of the back clamp. When the back clamp is used for a long time and the locking nut 30 and the screw 31 become loose, the locking nut 30 and the screw 31 are retightened by allowing the locking nut 30 and the screw 31 to rotate relative to each other, thereby avoiding the locking nut 30 and the screw 31 from becoming loose and affecting the use of the back clamp.

[0023] Further improvements, such as Figure 3 As shown in the figure, a protruding piece 5 is provided on the right end surface of the splint 2, and the protruding piece 5 is located in the middle of the splint 2 near the lower edge. A rubber elastic anti-skid pad 50 is adhered to the right end of the protruding piece 5, and an anti-skid stripe is provided on the right end of the elastic anti-skid pad 50.

[0024] Further improvements, such as Figure 3 and Figure 4 As shown in FIG. 1 , the ends of the locking nut 30 and the screw 31 that are away from each other are both butterfly-shaped structures, and the two butterfly-shaped structures are both in contact with the corresponding back panel hinge parts 10 .

[0025] Further improvements, such as Figure 2 and Figure 3As shown in the figure, an extension plate extends from the upper end of the clamp plate 2 to the upper left, and the extension plate is located above the clamp plate hinge 20. The angle between the extension plate and the clamp plate 2 is 165°. A rectangular clip through hole 6 is provided on the back of the extension plate. A sliding member 7 that slides up and down is provided in the clip through hole 6. A sliding member slot 70 in the left and right directions is provided on the upper end of the sliding member 7. A spring 8 is provided between the lower end of the sliding member 7 and the clamp through hole 6. One end of the spring 8 is connected to the lower end of the sliding member 7, and the other end of the spring 8 is connected to the inner wall of the lower end of the clamp through hole 6. A clip that is provided on the back of the back plate 1 above the back plate hinge 10 when the back clip is opened The back panel buckle 9 is connected to the sliding member slot 70, and a sliding slot 60 and a slider that cooperate with each other for sliding are arranged between the sliding member 7 and the clip through hole 6. The axial direction of the sliding slot 60 is consistent with the sliding direction of the sliding member 7. There are two sliding slots 60 and two sliders. When the two sliding slots 60 are correspondingly arranged on the left and right ends of the sliding member 7, and the thickness of the sliding member 7 is greater than the clip through hole 6, the left and right inner walls of the clip through hole 6 are extended with extensions corresponding to the two sliding slots 60. At this time, the extension is the slider. When the two sliding slots 60 are correspondingly arranged on the left and right inner walls of the clip through hole 6, the two sliders are correspondingly arranged on the left and right ends of the sliding member 7.

[0026] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A back clip locking structure for preventing screws from loosening, comprising a back plate; characterized in that: A splint is hinged on the back side of the back plate through a rotating shaft; a back plate hinge part and a splint hinge part are correspondingly provided on two opposite surfaces of the back plate and the splint; a first rotating shaft through hole and a second rotating shaft through hole are correspondingly provided on the back plate hinge part and the splint hinge part; the first rotating shaft through hole and the second rotating shaft through hole are coaxially arranged; the rotating shaft includes a locking nut and a screw; the locking nut is inserted in the first rotating shaft through hole and the second rotating shaft through hole and is threadedly connected with the screw; a torsion spring is sleeved on the locking nut; one end of the torsion spring is connected to the back plate; the other end of the torsion spring is connected to the splint.

2. A back clip locking structure for preventing screws from loosening according to claim 1, characterized in that: The clamping plate is provided with a protruding piece on the surface where the clamping plate hinge part is located; the protruding piece and the clamping plate hinge part are arranged on two opposite sides of the clamping plate.

3. A back clip locking structure for preventing screws from loosening according to claim 2, characterized in that: An elastic anti-skid pad is arranged on the surface of the protruding piece opposite to the back plate.

4. The back clip locking structure for preventing screws from loosening according to claim 1, characterized in that: The ends of the locking nut and the screw that are away from each other are both butterfly-shaped structures.

5. The back clip locking structure for preventing screws from loosening according to claim 1, characterized in that: The clamping plate is provided with a rectangular clip through hole on the surface opposite to the back plate; a sliding member is slidably arranged in the clip through hole; the sliding direction of the sliding member is perpendicular to the axis of the clip through hole; a sliding member slot is provided on one end of the sliding direction of the sliding member; the axis of the sliding member slot is perpendicular to the axis of the clip through hole; a spring is provided between the end of the sliding member away from the sliding member slot and the clip through hole; a back plate buckle is provided on the back plate which is engaged in the sliding member slot when the back clip is opened.

6. A back clip locking structure for preventing screws from loosening according to claim 5, characterized in that: A sliding groove and a sliding block which slide in cooperation with each other are arranged between the sliding member and the clip through hole; the axial direction of the sliding groove is consistent with the sliding direction of the sliding member.

7. The back clip locking structure for preventing screws from loosening according to claim 1, characterized in that: There are two splint hinges, which are arranged side by side at intervals; there are two back panel hinges, which are arranged side by side at intervals; both back panel hinges are located between the two splint hinges.

8. A back clip locking structure for preventing screws from loosening according to claim 7, characterized in that: The midpoint of the center line connecting the two splint hinge parts is located in the middle of the splint close to the edge.

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