CN218817445U

CN218817445U - Unilateral fixing bolt

Info

Publication number: CN218817445U
Application number: CN202223063869.XU
Authority: CN
Inventors: 马占峰; 马梓萌; 马梓萱
Original assignee: Qingdao Annaibeite Safety Protection Equipment Co ltd
Current assignee: Qingdao Annaibeite Safety Protection Equipment Co ltd
Priority date: 2022-11-18
Filing date: 2022-11-18
Publication date: 2023-04-07
Anticipated expiration: 2032-11-18

Abstract

The utility model discloses an unilateral fixing bolt belongs to bolt technical field. The utility model discloses a shank of bolt, middleware and inflation piece, the shank of bolt includes bolt body and bolt head, the bolt head is connected the bolt body top, the middleware includes baffle and conical member, the conical member is connected the baffle below, middleware central point puts and is equipped with circular through-hole, the shank of bolt with circular through-hole cooperation is used, the inflation piece is including inflation portion and fixed part, the fixed part is connected inflation portion below, be equipped with the centre bore in the inflation portion, the centre bore with the conical member cooperation is used, inflation portion evenly is equipped with a plurality of logical grooves, fixed part central authorities are equipped with the screw hole, the screw hole with the shank of bolt cooperation is used. The utility model is suitable for a section bar of different wall thicknesses, it is low to the technological requirement of use, structural strength is high.

Description

Unilateral fixing bolt

Technical Field

The utility model relates to a bolt technical field specifically indicates a unilateral fixing bolt.

Background

The first method is to make internal threads on the cavity section bar in a screw tap tapping mode and then fix the cavity section bar by using a connecting bolt, the method has certain requirements on a processing technology and a processing tool, the processing difficulty is high, and for thin-wall pipes with the thickness of less than 2.0mm, the connection is realized in the mode, the connection strength is very low, and the screw thread is easy to slip; secondly, threads are added on the cavity sectional material in a rivet nut mode, the cavity sectional material is fixed through a connecting bolt, special processing is needed, certain requirements are met for processing scenes, processing tools and processing workers, the rivet nut cannot adapt to thick-wall sectional materials, and the connecting strength is low; the third type is fixed by a rivet pulling mode, is only suitable for thin-wall sections with low requirements on connection lightness and is not suitable for thick-wall sections, and therefore a unilateral fixing bolt is urgently needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome above technical problem, provide a unilateral fixing bolt, be applicable to the section bar of different wall thicknesses, it is low to the technological requirement of use, structural strength is high.

In order to solve the technical problem, the utility model provides a technical scheme does: the utility model provides an unilateral fixing bolt, includes the shank of bolt, intermediate member and inflation piece, the shank of bolt includes bolt body and bolt head, the bolt head is connected bolt body top, the intermediate member includes baffle and toper piece, the toper piece is connected the baffle below, intermediate member central point puts and is equipped with circular through-hole, the shank of bolt with circular through-hole cooperation is used, the inflation piece is including inflation portion and fixed part, the fixed part is connected inflation portion below, be equipped with the centre bore in the inflation portion, the centre bore with the toper piece cooperation is used, inflation portion evenly is equipped with a plurality of logical grooves, fixed part central point is equipped with the screw hole, the screw hole with the shank of bolt cooperation is used.

As an improvement, the bolt body and the bolt head are integrally formed, and an operation groove is formed in the bolt head.

As an improvement, the baffle with toper piece integrated into one piece, toper piece periphery evenly is equipped with a plurality of stoppers, the stopper with lead to the groove cooperation and use.

As an improvement, each corner of the baffle is provided with a chamfer, and the baffle is positioned at the position of the circular through hole and is provided with a chamfer.

As an improvement, the expansion part and the fixing part are integrally formed, and a chamfer is arranged at the position, located at the central hole, of the expansion part.

In a refinement, the central hole has a diameter greater than the threaded hole, and the central hole has a diameter greater than the outer peripheral diameter of the bottom of the cone and less than the outer peripheral diameter of the upper portion of the cone.

After the structure more than adopting, the utility model has the advantages of it is following: the utility model discloses novel structure, reasonable in design, it is very convenient to use, connect two section bars as required, only need open the round hole on the section bar, can with simple drilling tool, put into the round hole with the inflation piece, put into the centre bore with the intermediate part, then pass the screw hole that intermediate part and inflation piece bottom with the bolt body and be connected, through the rotation bolt body, can realize the internal expansion, can adapt to the section bar of the different thickness of 1 ~ 12mm, joint strength is high, be applicable to bearing structure and connect, the practicality is better.

Drawings

Fig. 1 is a schematic structural diagram of a single-side fixing bolt of the present invention.

Fig. 2 is a schematic structural diagram of a single-side fixing bolt of the present invention.

Fig. 3 is a front view of the single-side fixing bolt of the present invention.

Fig. 4 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A in fig. 3.

As shown in the figure: 1. a bolt body; 2. a middleware; 3. an expansion member; 4. a bolt body; 5. a bolt head; 6. a baffle plate; 7. a conical member; 8. a circular through hole; 9. an expansion part; 10. a fixed part; 11. a central bore; 12. a through groove; 13. a threaded hole; 14. a groove; 15. and a limiting block.

Detailed Description

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "center", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a specific orientation configuration and operation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly stated or limited, the terms "provided", "mounted", "connected", and the like are to be understood in a broad sense, and for example, they may be fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected to the inside of two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The present invention will be described in further detail with reference to the accompanying drawings.

Combine fig. 1-fig. 4, an unilateral fixing bolt, including the shank of bolt 1, intermediate member 2 and inflation piece 3, the shank of bolt 1 includes bolt body 4 and bolt head 5, bolt body 4 with bolt head 5 integrated into one piece, be equipped with operation recess 14 on the bolt head 5, bolt head 5 is connected bolt body 4 top, intermediate member 2 includes baffle 6 and conical member 7, baffle 6 with conical member 7 integrated into one piece, conical member 7 periphery evenly is equipped with a plurality of stoppers 15, conical member 7 is connected baffle 6 below, 2 central point of intermediate member puts and is equipped with circular through-hole 8, each angle of baffle 6 all is equipped with the chamfer, baffle 6 is located circular through-hole 8 position department is equipped with the chamfer, the shank of bolt 1 with circular through-hole 8 cooperation is used, inflation piece 3 is including inflation portion 9 and fixed part 10, fixed part 10 is connected centre bore portion 9 below, be equipped with 11 in the inflation portion 9, the shank of bolt 9 with fixed part 10 integrated into one piece, inflation portion 9 is located the chamfer, the department of inflation portion is equipped with the position of circular through-hole 11, the inflation portion 11 with conical member 7 uses through-hole 13, the bottom of conical member is greater than the conical member 7 is equipped with the conical member diameter of inflation portion 13, the screw hole diameter is used, the bottom is greater than the conical member 13, the screw hole 13, the diameter of inflation portion 7 is used the conical member 13, the diameter of inflation portion 13, the screw hole 13 is more than the diameter is used in the cooperation of inflation portion 13, the bottom the inflation portion 13, the cooperation of inflation portion 7, the conical member 13, the inflation portion 13 is used the diameter of inflation portion 13.

The utility model discloses when concrete implementation, open the round hole on the section bar, can with simple drilling tool, put into the round hole with inflation piece 3, put into centre bore 11 with intermediate member 2, and make 15 joints of stopper in leading to groove 12, then it is connected with the screw hole 13 of 3 bottoms of inflation piece to pass intermediate member 2 with the bolt body 1, with the spanner card in operation recess 14, then twist bolt body 1, bolt body 1 moves down and drives intermediate member 2 and move down, toper piece 7 pushes down inflation portion 9, inflation portion 9 inflation extrusion section bar round hole, can realize the internal expansion, and then carry out fixed connection with the section bar, joint strength is high, can adapt to the section bar of the different thickness of 1 ~ 12mm, and the practicality is better.

The present invention and the embodiments thereof have been described above, but the description is not limited thereto, and the embodiment shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should understand that they should not be limited to the embodiments described above, and that they can design the similar structure and embodiments without departing from the spirit of the invention.

Claims

1. The utility model provides a unilateral fixing bolt which characterized in that: including the shank of bolt (1), intermediate member (2) and inflation piece (3), the shank of bolt (1) is including bolt body (4) and bolt head (5), bolt head (5) are connected bolt body (4) top, intermediate member (2) are including baffle (6) and cone (7), cone (7) are connected baffle (6) below, intermediate member (2) central point puts and is equipped with circular through-hole (8), the shank of bolt (1) with circular through-hole (8) cooperation is used, inflation piece (3) are including inflation portion (9) and fixed part (10), fixed part (10) are connected inflation portion (9) below, be equipped with centre bore (11) in inflation portion (9), centre bore (11) with cone (7) cooperation is used, inflation portion (9) evenly is equipped with a plurality of logical groove (12), fixed part (10) central authorities are equipped with screw hole (13), bolt body (13) with the cooperation of bolt body (1) is used.

2. The single-sided fixing bolt according to claim 1, wherein: the bolt body (4) and the bolt head (5) are integrally formed, and an operation groove (14) is formed in the bolt head (5).

3. The single-sided fixing bolt according to claim 1, wherein: baffle (6) with toper piece (7) integrated into one piece, toper piece (7) periphery evenly is equipped with a plurality of stopper (15), stopper (15) with lead to groove (12) cooperation and use.

4. The single-sided fixing bolt according to claim 1, wherein: each angle of baffle (6) all is equipped with the chamfer, baffle (6) are located circular through-hole (8) position department is equipped with the chamfer.

5. The single-sided fixing bolt according to claim 1, wherein: the expansion part (9) and the fixing part (10) are integrally formed, and a chamfer is arranged at the position, located at the central hole (11), of the expansion part (9).

6. The single-sided fixing bolt according to claim 1, wherein: the diameter of the central hole (11) is larger than that of the threaded hole (13), and the diameter of the central hole (11) is larger than the peripheral diameter of the bottom of the conical piece (7) and smaller than the peripheral diameter of the upper part of the conical piece (7).