Rotating fixed structure

Abstract

The utility model discloses a rotating fixing structure, which belongs to the field of mechanical connection technology. The scheme adopts a connecting piece with a special structure, specifically including a special-shaped nut, a gasket and a bolt. The special-shaped nut includes a nut body and a first platform symmetrically arranged on the outside of the nut body. The first platform extends an extension part along the threaded hole direction of the nut body, and the extension part can contact the hole side of the fixed base. By opening a screw groove in the through hole of the fixed part, convex teeth are symmetrically arranged on the outside of the first column extending along the nut body, and the screw groove matches the convex teeth, the fixing of the special-shaped nut can be achieved by rotating the bolt. It is easy to disassemble and suitable for narrow space.

Description

Technical Field

[0001] The utility model relates to a mechanical connection structure, in particular to a structure which is indirectly fixed by rotating a screw. Background Art

[0002] Bolts are fasteners that work with nuts and are mainly used to connect two parts with holes. In some environments, the bolt head or one side of the nut is not easy to fix or the space is limited, so it is impossible to tighten it; self-tapping screws may loosen (for a long time) in a vibrating environment; the inner shell of the (vehicle) instrument panel and the carrier plate of the PCB board are injection molded into a special-shaped shell, and various devices or cables are fixed on the special-shaped shell, and then the special-shaped shell is fixed on the frame to achieve modular installation, which is easy to replace or repair. The connection method is usually bolt connection (bolted structure connection pair). If a round head bolt connection pair is used, it is difficult to disassemble due to corrosion and rust, and it is easy to slip and cannot be fixed. Utility Model Content

[0003] The main purpose of the utility model is to solve the above-mentioned technical problems.

[0004] According to the utility model, a rotating fixing structure is proposed, comprising a part to be fixed, a fixed base and a connecting part connecting the part to be fixed and the fixed base, wherein a through hole is provided on the part to be fixed, and a hole is provided on the fixed base, the hole allows a partial structure of the part to be fixed to pass through, the connecting part comprises a special-shaped nut, a gasket and a bolt, the bolt passes through the through hole on the part to be fixed and is threadedly connected to the special-shaped nut, the special-shaped nut comprises a nut body and a first platform symmetrically arranged on the outside of the nut body, the first platform extends an extension portion along the direction of the threaded hole of the nut body, and the extension portion can contact the side of the hole of the fixed base.

[0005] Preferably, the part to be fixed extends into a cone along the direction of the through hole, one side of the nut body extends along the axial direction to form a first column, the threaded hole extends to the end of the first column, the outer diameter of the first column matches the inner diameter of the through hole on the part to be fixed, and the height of the extension portion is greater than the height of the cone.

[0006] Preferably, screw grooves are symmetrically provided in the through hole, and the screw grooves are left-handed; convex teeth are symmetrically provided on the outer side of the first column, and the convex teeth match the screw grooves.

[0007] Preferably, the side edge of the protruding tooth has an inclined angle.

[0008] Preferably, a cylinder is symmetrically arranged on the part to be fixed with the truncated cone as the center, and the height of the cylinder is greater than the height of the truncated cone.

[0009] Preferably, the cylinder on the part to be fixed corresponds to the extension portion of the special-shaped nut.

[0010] Preferably, a first concave surface is provided at the end of the extension portion.

[0011] Preferably, a first blind hole is provided in an axial direction on a side of the nut body away from the first column, and an inner diameter of the first blind hole is larger than an inner diameter of the threaded hole.

[0012] The technical solution of the utility model adopts a special structure of the connecting piece, specifically including a special-shaped nut, a gasket and a bolt. The special-shaped nut includes a nut body and a first platform symmetrically arranged on the outside of the nut body. The first platform extends an extension portion along the threaded hole direction of the nut body, and the extension portion can contact the side of the hole of the fixed base. By opening a screw groove in the through hole of the fixed part, convex teeth are symmetrically arranged on the outside of the first column extending along the nut body, and the screw groove matches the convex teeth, the fixing of the special-shaped nut can be achieved by rotating the bolt. It is easy to disassemble and suitable for narrow space. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] With reference to the accompanying drawings, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings are only used for illustrative purposes and are not intended to limit the protection scope of the present utility model.

[0014] Figure 1a It is a schematic diagram of a part to be fixed involved in an embodiment of the utility model.

[0015] Figure 1b This is a schematic diagram of a fixed base frame according to an embodiment of the utility model.

[0016] Figure 1c It is a schematic diagram of a connecting piece involved in an embodiment of the utility model.

[0017] Figure 1d It is a schematic diagram of the assembly of the connection structure involved in the embodiment of the utility model.

[0018] Figure 1g It is a schematic diagram of the locking state of the connection structure involved in the embodiment of the utility model.

[0019] Figure 2 for Figure 1a A partial enlarged view of S.

[0020] Figure 3 It is a schematic diagram of the structure of the part to be fixed involved in the embodiment of the utility model.

[0021] Figure 4 It is an exploded view of the connecting piece involved in the embodiment of the utility model.

[0022] Figure 5 It is a schematic structural diagram of a special-shaped nut involved in an embodiment of the utility model.

[0023] Figure 6 It is a schematic diagram of the application of the rotating fixing structure involved in the embodiment of the utility model.

[0024] Figure 7 It is a schematic diagram of the cross-sectional structure of the part to be fixed involved in the embodiment of the utility model.

[0025] Description of Figure Numbers:

[0026] 11. Parts to be fixed;

[0027] 111, through hole; 112, truncated cone; 113, screw groove; 114, cylinder; 115, edge portion; 116, functional groove;

[0028] 22. Fixed base frame; 221. Hole;

[0029] 33. Connectors;

[0030] 331, special-shaped nut; 331a, nut body; 331a1, threaded hole; 331a2, first column; 331a3, convex teeth; 331b, first platform; 331b1, first groove; 331b2, extension portion; 331b3, first concave surface;

[0031] 332, gasket;

[0032] 333. Bolt.

[0033] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0035] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0036] The utility model proposes a rotating fixing structure for fixing two parts or components, especially for fixing a carrier that integrates a large number of functional components or cables on a base frame or other components. Usually, such carriers have a special-shaped structure. In order to achieve fast and convenient fixing, a large hole is opened on the base frame, and the two components are connected by a connecting piece. Among them, the connecting piece can be fixed by rotating only at one end. Figure 1a , 1b , 1c, 1d, and 1g are used as examples for illustration.

[0037] Figure 1a The structure diagram of the fixed part 11 is generally made of plastic, which is convenient for forming multiple functional slots to carry components or cables (including signal lines) with different functions. It is known that the fixed part 11 can also be made of easy-to-form materials such as metal aluminum and alloy aluminum.

[0038] Figure 1b The structural diagram of the fixed base frame is shown below. Figure 1a The fixed part 11 is fixed on the fixed base frame 22, and the fixed base frame 22 has a hole 221 that matches the fixed part 11. A through hole 111 is provided on the fixed part 11. Figure 1c The connecting member 33 in the embodiment connects and fixes the fixed member 11 to the fixed base frame (see Figure 1d and Figure 1g ).

[0039] like Figure 2 and Figure 3 As shown, a through hole 111 is opened on the fixed part 11, a frustum 113 is extended along one side of the through hole 111, screw grooves 113 are symmetrically opened in the through hole 111, and cylinders 114 are symmetrically arranged near the frustum 113 on the fixed part 11, and the height of the cylinder 111 is greater than the height of the frustum 112.

[0040] The part to be fixed 11 is usually compression molded or injection molded, and a truncated cone 113 is formed at the position of the through hole 111 to improve the bearing capacity of the part to be fixed 11 and avoid stress concentration when processing the screw groove 113.

[0041] The screw groove 113 is left-handed ( Figure 1d As the reference surface), it is similar to a left-hand thread and tends to screw in when turned counterclockwise.

[0042] See also Figure 4 The connecting member 33 includes a special-shaped nut 331 , a washer 332 and a bolt 333 .

[0043] like Figure 5As shown, the special-shaped nut 331 includes a columnar nut body 331a, and the nut body 331a is provided with a threaded hole 331a1 in an axial square shape, and the threaded hole 331a1 matches the thread on the bolt body of the bolt 333. One side of the nut body 331a extends in the direction of the threaded hole 331a1 to form a first column 331a2, and the threaded hole 331a1 extends to the end of the first column 331a2, and the outer diameter of the first column 331a2 matches the through hole 111 of the to-be-fixed part 11, and preferably, the outer diameter of the first column 331a2 is slightly smaller than the inner diameter of the through hole 111. The outer side of the first column 331a2 is symmetrically provided with protruding teeth 331a3, and the protruding teeth 331a3 match the screw groove 113 of the to-be-fixed part 11, and preferably, the side of the protruding teeth 331a3 has an inclined angle.

[0044] A first platform 331b is symmetrically arranged on the outside of the nut body 331a. The first platform 331b is arranged in a square shape along the axial direction of the nut body 331a. The first platform 331b is provided with a first groove 331b1 in the axial direction away from the first column 331a2. The first platform 331b is provided with an extension portion 331b2 in the axial direction close to the first column 331a2. The extension length of the extension portion 331b2 is greater than the axial protruding length of the cone 112 on the fixed part 11 to ensure that the extension portion 331b2 can contact the fixed base 22. The top of the extension portion 331b2 is provided with a first concave surface 331b3, and the first concave surface 331b3 matches the top of the cylinder 114 on the fixed part 11.

[0045] A first blind hole is formed on the axial side of the nut body 331a away from the first column 331a2, and the inner diameter of the first blind hole is larger than the threaded hole 331a1. When the bolt 333 is screwed into the threaded hole 331a1, a conventional nut can be screwed on the end of the bolt body of the bolt 333. The nut can avoid the problem of separation or loss after the fixed part 11 and the fixed base 22 are separated.

[0046] The gasket 332 has a hole that matches the bolt body of the bolt 333 . When the bolt 333 passes through the through hole 111 of the part 11 to be fixed, the gasket 332 increases the contact area and reduces the local pressure of the bolt 333 on the part 11 to be fixed.

[0047] The bolt 333 is composed of a bolt body with external threads and a bolt cap connected to one end of the bolt body. The bolt cap is a regular polygon, and may also be a cross groove, a plum blossom groove, or a special-shaped groove.

[0048] When in use, the washer 332 is sleeved on the bolt body of the bolt 333 and passed through the other side of the part to be fixed 11 (the opposite side with the cylinder), the special-shaped nut 331 is located on the side of the part to be fixed 11 with the cylinder 114, and the first column 331a2 of the special-shaped nut 331 is inserted into the through hole 111 of the part to be fixed 11, the convex teeth 331a3 on the first column 331a2 slide along the screw groove 113 of the part to be fixed 11, and the extension parts 331b2 on the first platforms 331b on both sides of the nut body 331a are placed above the cylinder 114, that is, the first concave surface 331b3 contacts the top of the cylinder 114, the bolt 333 is screwed into the threaded hole 331a1 of the special-shaped nut 331 and tightened, and the part to be fixed 11 with the assembled connecting piece 33 is placed on the fixed base frame 22, as shown in FIG. Figure 1d ; Keep the fixed part 11 stable and further tighten the bolt 333. Under the action of the rotation of the bolt 333, the special-shaped nut 331 rotates accordingly, and the convex teeth 331a3 on the first column 331a2 slide along the screw groove 113 of the fixed part 11, and the extension portion 331b2 on the first platform 331b is separated from the cylindrical body 114 on the fixed part 11, and the special-shaped nut 331 rotates in the direction of the arrow. While rotating, the extension portion 331b2 on the first platform 331b continuously approaches the fixed base frame 22 on the fixed part 11. When the extension portion 331b2 of the first platform 331b contacts the fixed base frame 22, at this time, the nut body 331a of the special-shaped nut 331 is close to the round table 112 on the fixed part 11. When the bolt 333 is further tightened, the special-shaped nut 331 no longer rotates, and the extension portion 331b2 on the first platform 331b generates pressure on the fixed base frame 22 to achieve tightening ( Figure 1g ).

[0049] When repair or replacement is performed, the shaped nut 331 is loosened by screwing the bolt 333 in the reverse direction, and the pressure of the first platform 331b on the fixed base frame 22 is reduced. The shaped nut 331 rotates accordingly by further screwing the bolt 333, and returns to the original position. Figure 1d state, so as to realize the separation of the part to be fixed 11 and the fixed base frame 22.

[0050] The above-mentioned rotating fixing structure can achieve the fastening or separation of the fixing member by rotating only one end, which is convenient for disassembly and improves efficiency.

[0051] Figure 6 The invention discloses a specific embodiment of the rotating fixing structure of the present application. The fixed part 11 is in the shape of a long strip, and has an edge portion 115 and a functional groove 116 formed by injection molding or hot pressing. Through holes are provided on both sides of the fixed part 11, and screw grooves 113 are provided in the through holes. A cylinder 114 is provided on the fixed part 11. Figure 7It is a cross-sectional view of the part to be fixed. A truncated cone 112 is extended below the through hole of the part to be fixed 11. The bolt 333 passes through the gasket and the through hole and is threadedly connected with the special-shaped nut 331 to fix the part to be fixed 11 on the fixed base 22. The functional groove 116 on the part to be fixed 11 passes through the hole 221 of the fixed base 22. At this time, the extension portion 331b2 of the first platform 331b of the special-shaped nut 331 is in close contact with the cylinder 114 of the part to be fixed 11. By rotating the bolt 333 clockwise, the special-shaped nut 331 is driven to rotate clockwise, and the extension portion 331b2 of the special-shaped nut 331 presses the side of the hole of the fixed base to achieve a fixed connection between the part to be fixed 11 and the fixed base 22.

Claims

1. A rotating fixing structure, comprising a part to be fixed (11), a fixing base (22), and a connecting member (33) connecting the part to be fixed (11) and the fixing base (22), characterized in that: The fixed part (11) is provided with a through hole (111), and the fixed base (22) is provided with a hole (221), wherein the hole (221) allows a part of the structure of the fixed part (11) to pass through. The connecting part (33) comprises a special-shaped nut (331), a gasket (332) and a bolt (333), wherein the bolt (333) passes through the through hole (111) on the fixed part (11) and is threadedly connected with the special-shaped nut (331). The special-shaped nut (331) comprises a nut body (331a) and a first platform (331b) symmetrically arranged on the outside of the nut body (331a), wherein the first platform (331b) extends an extension portion (331b2) along the direction of the threaded hole (331a1) of the nut body (331a), and the extension portion (331b2) can contact the side of the hole (221) of the fixed base (22).

2. The rotating fixing structure according to claim 1, characterized in that: The part to be fixed (11) extends a truncated cone (112) in the direction of the through hole (111), and one side of the nut body (331a) extends in the axial direction to form a first column (331a2), and the threaded hole (331a1) extends to the end of the first column (331a2), and the outer diameter of the first column (331a2) matches the inner diameter of the through hole (111) on the part to be fixed (11), and the height of the extension portion (331b2) is greater than the height of the truncated cone (112).

3. The rotating fixing structure according to claim 2, characterized in that: A screw groove (113) is symmetrically provided in the through hole (111), and the screw groove (113) is left-handed; convex teeth (331a3) are symmetrically provided on the outer side of the first column (331a2), and the convex teeth (331a3) match the screw groove (113).

4. The rotating fixing structure according to claim 3, characterized in that: The side edge of the protruding tooth (331a3) has an inclined angle.

5. The rotating fixing structure according to claim 4, characterized in that: A cylinder (114) is symmetrically arranged on the to-be-fixed part (11) with the truncated cone (112) as the center, and the height of the cylinder (114) is greater than the height of the truncated cone (112).

6. The rotating fixing structure according to claim 5, characterized in that: The cylindrical body (114) on the part to be fixed (11) corresponds to the extension portion (331b2) of the special-shaped nut (331).

7. The rotating fixing structure according to claim 6, characterized in that: The end of the extension portion (331b2) is provided with a first concave surface (331b3).

8. The rotating fixing structure according to claim 7, characterized in that: A first blind hole is formed in the axial direction on one side of the nut body (331a) away from the first column (331a2), and the inner diameter of the first blind hole is larger than the inner diameter of the threaded hole (331a1).

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