Inflatable Key Inflatable Shaft Technology With Double Load-bearing Shrapnel

An inflatable key has an inflatable shaft with double load-bearing shrapnel, the shrapnel is more durable and not easy to break; it also has the advantages of convenient installation and replacement of the shrapnel.

In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an inflatable shaft with an inflatable key with double load-bearing shrapnel, comprising a hollow shaft, an air bag, an inflatable key, and a key hole is provided on the shaft. The air bag is arranged in the shaft, and the inflatable key includes a key seat and a key body, characterized in that the key seat and the key body are connected by a connecting screw, and an elastic sheet is arranged between the key body and the key seat. It includes a mounting part and a working part. The mounting part is clamped between the key base and the key body. The connection between the working part and the mounting part is provided with a V-shaped corner, and the outer end of the working part is provided with an inverted V-shaped corner.

By adopting the above technical solution, the inflatable key is located in the key hole on the shaft body, and the air bag is arranged in the shaft body. When there are parts that need to be worked on the inflatable shaft, the air bag inflates against the key seat of each inflatable key Make the key body protrude from the key hole, and then clamp the parts that need to be operated through the key body. At this time, the inverted V-shaped corner on the working part of the shrapnel collides with the inner wall of the shaft body. Since the contact point is at the corner, the The pressure on the corner will be shared to both sides, so that the shrapnel will not be too strong locally; in addition, there is a V-shaped corner at the connection between the working part and the mounting part. When the inverted V-shaped corner conflicts with the inner wall of the shaft, The V-shaped corner will interfere with the key seat. Because the two directions are opposite, the V-shaped corner and the inverted V-shaped corner form a double load-bearing structure. The force received by the elastic piece is dispersed in each part of the elastic piece, so that the elastic piece has a hard to break Function and long service life.

In addition, the key body and the key base are detachably connected by connecting screws, and the mounting part of the elastic sheet is clamped between the key body and the key base, so that the elastic sheet is easy to install and disassemble, and it is easy to replace the elastic sheet even if it is damaged.

The utility model is further configured as follows: a plane is provided in the middle of the extension direction of the key base, and the key body is installed on the plane.

By adopting the above technical solution, the plane provided in the length direction of the key base is to facilitate the installation of the key body on the key base and provide an installation location for the key body.

The utility model is further configured as follows: the plane of the key seat is provided with a rectangular groove, and the mounting part of the elastic piece is placed in the rectangular groove.

By adopting the above technical solution, a rectangular groove is provided on the aspect, so that the mounting portion of the elastic sheet can be placed in the rectangular groove, and the elastic sheet is protected from being squeezed by the key seat and the key body when the elastic sheet is installed on the inflatable key.

The utility model is further configured as follows: a plurality of through holes are uniformly provided in the extension direction of the key seat, threaded holes are provided at the corresponding positions of the key body and the through holes of the key seat, and the connecting screw faces the key body from the key seat The other side passes through the through hole to connect with the threaded hole on the key body.

By adopting the above technical solution, the key base and the key body are connected with the threaded holes on the key body through screws. This connection mode is stable, simple in structure, convenient in disassembly and assembly, and has the advantages of high installation efficiency and saving installation time.

The utility model is further configured that: the through hole is provided with a tapered round socket on the other side facing the key body.

By adopting the above technical solution, the head of the connecting screw is located in the round socket after the installation is completed, and the head of the connecting screw is lower than the surface of the key seat, so that the airbag will not be damaged by hard objects on the head of the connecting screw, which can protect the airbag And the tapered round socket plays an aligning role when the connecting screw passes through the through hole.

The utility model is further configured that: the other side of the key body facing the through hole is provided with an assembly threaded hole.

By adopting the above technical solution, when assembling the inflatable shaft, the inflatable key needs to be fixed to the key hole first, and then the air bag is placed in the shaft body. The assembly threaded hole can be used to connect the external tensioning component, so that the inflatable key It is pre-fixed on the shaft to facilitate airbag installation.

In summary, the utility model has the advantages that the elastic pieces on the inflatable keys are not easy to break, and the elastic pieces are easy to replace.