CN102151901A - Reversed installation prevention structure for chain of chain saw - Google Patents

Abstract

The invention discloses an anti-reverse assembly structure of a chain saw chain, which comprises a sprocket, on which a sprocket tooth is provided, and the sprocket tooth is provided with a snap-fitting structure to cooperate with a notch on the right side of the chain tooth of the chain. The present invention is simple in structure and easy to manufacture. A snap-fitting structure is added on the sprocket teeth to match the gaps on the chain teeth. When installing the chain, you will find that the installation is difficult, and it is difficult to install the chain. Therefore, it is easy to prevent the user from reinstalling the chain and realize the safe operation of the chain saw.

Description

Chain saw chain anti-reversal structure

technical field

The invention relates to a chain saw structure, in particular to a chain saw chain anti-reverse assembly structure.

Background technique

When the chain on the chain saw needs to be replaced due to wear and other reasons, since the sprocket 01 adopts a centrosymmetric structure, as shown in Figure 1, the user often installs the chain in reverse, that is, the notch 211 on the right side of the chain tooth 21 of the chain 2 is used as the For reference, as shown in Figure 2, it should be installed clockwise according to the usage regulations, but it was installed counterclockwise by the user. It is prone to serious vibration or even chain throwing and off-chaining, which poses a huge safety hazard.

Contents of the invention

The problem to be solved by the present invention is to provide a chain saw chain anti-reversal structure, which is simple in structure, easy to manufacture, avoids the reverse installation of the chain by the user, and improves the safety of the chain saw.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solution: the chain saw chain anti-reversal structure includes a sprocket, and sprocket teeth are arranged on the sprocket, which is characterized in that: the sprocket teeth are provided with a snap-fit structure Fits into the notch on the right side of the chain's teeth.

Further, the engaging structure is a protrusion arranged on the left side of the sprocket teeth, and the shape and size of the protrusion correspond to the notch.

After adopting the above-mentioned technical solution, the present invention has the following advantages: a snap-fitting structure is added on the sprocket teeth to fit the gaps on the chain teeth, and the chain can be installed on the sprocket only when the chain is properly installed so that the snap-fitting structure fits well with the gaps , If the user reverses the chain, he will find it difficult to install and install the chain, so it is easy to avoid the user from reversely installing the chain and realize the safe work of the chain saw.

Description of drawings

The present invention will be further described below in conjunction with accompanying drawing:

Fig. 1 is the structural representation of existing sprocket wheel;

Fig. 2 is the structural representation of chain;

Fig. 3 is a schematic structural diagram of an embodiment of the present invention.

Detailed ways

As shown in Figures 2 and 3, a chain saw chain anti-reverse assembly structure includes a sprocket 1, on which a sprocket tooth 11 is provided, and the sprocket tooth is provided with a snap-fit structure and a chain of the chain 2. The notch 211 on the right side of the tooth 21 fits. The engaging structure is a protrusion 111 arranged on the left side of the sprocket teeth, and the shape and size of the protrusion correspond to the notch.

In the above-mentioned embodiment, a snap-fit structure is added on the sprocket teeth to match the gaps on the chain teeth. The chain can only be installed on the sprocket when the chain is properly installed so that the protrusions fit well with the gaps. If the user reverses the chain, he will find that The installation is difficult, and it is difficult to install the chain well, so it is easy to prevent the user from reversely installing the chain, so as to realize the safe operation of the chain saw.

The invention is simple in structure and convenient to manufacture, and only needs to make some shape changes on the production mold of the sprocket.

Except above-mentioned preferred embodiment, the present invention also has other embodiments, and those skilled in the art can make various changes and deformations according to the present invention, as long as they do not depart from the spirit of the present invention, all should belong to the scope defined in the appended claims of the present invention scope.

Claims (2)

1. chain saw chain counnter attack assembling structure comprises sprocket wheel (1), is provided with sprocket (11) on sprocket wheel, it is characterized in that: described sprocket is provided with the card distribution structure and cooperates with the breach (211) on chain tooth (21) right side of chain (2).

2. chain saw chain counnter attack assembling structure according to claim 1 is characterized in that: described card distribution structure is the projection (111) that is located at the sprocket left side, and the shape of projection and size are corresponding with breach.

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