CN202883661U - Anti-rotating and anti-loosing fastening connecting structure - Google Patents

Abstract

The utility model relates to the field of small hardware parts, in particular to a fastening connector. An anti-rotation and anti-loosening fastening connection structure includes a connecting piece and a bolt, the end surface of the connecting piece in contact with the head of the bolt is provided with a rotation-limiting protrusion, and the head of the bolt is a regular polygon. The anti-rotation and anti-loosening fastening connection structure of the utility model adds a protrusion structure that restricts the rotation of the bolt on the edge of the bolt hole of the connector, and uses one side of the head of the ordinary hexagonal head or square head bolt to fit the rotation-limiting bump. The assembly and disassembly can be completed by rotating the nut with a single set of tools, which reduces the number of personnel and tools, improves work efficiency, and solves the problem that it cannot be locked and disassembled in special cases, and because the bolt head and the connecting piece are mechanically limited, to a certain extent Reduced risk of fastener loosening due to bolt turning.

Description

Anti-rotation and anti-loosening fastening connection structure

technical field

The utility model relates to the field of small hardware parts, in particular to a fastening connector.

Background technique

In the traditional bolt and nut matching structure, two sets of tools are generally used in the assembly and disassembly process, one set of tools is responsible for fixing, and the other set is responsible for rotating; during the operation process, sometimes multiple people are required to cooperate, which reduces work efficiency; in some Under certain circumstances, if the space is limited and the tools are difficult to operate and use, the phenomenon of fastener rotation may also occur, and the assembly and disassembly cannot be completed smoothly.

Contents of the invention

The technical problem to be solved by the utility model is to provide an anti-rotation and anti-loosening fastening connection structure, which adds a raised structure on the edge of the bolt hole of the connector to limit the rotation of the bolt, and can be completed by rotating the nut with a single tool Assembling and dismantling reduces personnel and tools and improves work efficiency.

The utility model is realized in the following way: an anti-rotation and anti-loosening fastening connection structure includes a connecting piece and a bolt, the end surface of the connecting piece in contact with the head of the bolt is provided with a rotation-limiting bump, and the head of the bolt is a regular polygon.

The bolts are lag bolts.

The bolts are hexagon head bolts.

The anti-rotation and anti-loosening fastening connection structure of the utility model adds a protrusion structure that restricts the rotation of the bolt on the edge of the bolt hole of the connector, and uses one side of the head of the ordinary hexagonal head or square head bolt to fit the rotation-limiting bump. The assembly and disassembly can be completed by rotating the nut with a single set of tools, which reduces the number of personnel and tools, improves work efficiency, and solves the problem that it cannot be locked and disassembled in special cases, and because the bolt head and the connecting piece are mechanically limited, to a certain extent Reduced risk of fastener loosening due to bolt turning.

Description of drawings

    Fig. 1 is a schematic diagram of the use state of the anti-rotation and anti-loosening fastening connection structure of the utility model.

In the figure: 1 connecting piece, 2 bolt, 3 connected piece, 4 nut, 5 limited rotation bump.

Detailed ways

Below in conjunction with specific embodiment, further set forth the utility model. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of the present utility model. In addition, it should be understood that after reading the content of the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by the appended claims of the application.

Example 1

As shown in Figure 1, an anti-rotation and anti-loosening fastening connection structure includes a connecting piece 1 and a bolt 2. The end surface of the connecting piece 1 in contact with the head of the bolt 2 is provided with a rotation-limiting projection 5, and the rotation-limiting projection The block 5 is close to the bolt hole on the connector 1, and the distance between the rotation-limiting projection 5 and the bolt hole matches the size of the head of the bolt 2, which is a regular polygon.

In this embodiment, the bolts 2 are lag bolts or hexagon head bolts.

When in use, first pass the bolt 2 through the bolt holes of the connecting piece 1 and the connected piece 3 in sequence, so that any side plane of the head of the bolt 2 fits with the side of the rotation-limiting protrusion 5 of the connecting piece 1;

Then, the nut 4 is screwed in until it fits with the connected part 3. During this process, a torque is applied to the nut 4, and the bolt 2 has already been limited by the rotation-limiting protrusion 5, so the co-rotation phenomenon does not occur.

Under extreme conditions, the bolt 2 tends to rotate in any direction, resulting in loosening of the structure. During this process, the rotation-limiting protrusion 5 on the connector 1 effectively prevents the bolt 2 from rotating, thereby reducing the risk of loosening.

Claims (3)

1. locking fastening structure of anti-rotation, it is characterized in that: comprise link (1) and bolt (2), the end face that described link (1) contacts with the head of bolt (2) is provided with limit and turns projection (5), and the head of described bolt (2) is regular polygon.

2. the locking fastening structure of anti-rotation as claimed in claim 1, it is characterized in that: described bolt (2) is square head bolt.

3. the locking fastening structure of anti-rotation as claimed in claim 1, it is characterized in that: described bolt (2) is hexagon head bolt.

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