Technical realization elements:

SUMMARY OF THE INVENTION It is an object of the present invention to provide a sliding door buffer which has the advantages of compact structure, convenient installation and smooth and quiet buffering.

The present invention is embodied in that it comprises a fixed body and a sliding positioning body that is slidably engaged with the fixed body, wherein the fixed body is provided with a balance positioning wheel assembly, and the sliding positioning body is provided with a pair of balanced positioning wheel assemblies The U-shaped positioning groove of the opening is provided with a buffering component in the sliding positioning body, the buffering component is fixed at one end, and the other end is connected with a sound-absorbing component that is engaged with the fixing body, and the sound-absorbing component is slidably engaged with the U-shaped positioning groove.

The buffer assembly includes a tension spring and a buffer cylinder installed in parallel, wherein one end of the tension spring and the buffer cylinder is connected to the sliding positioning body, and the other end is connected to the sound attenuating assembly.

The muffling assembly includes a slider and a sliding hook that are rotatably coupled together, and the sliding hook cooperates with a hanging post, wherein the slider is connected with the tension spring and the buffer cylinder, and a silencer soft rubber sleeve is disposed between the slider and the sliding hook. .

The balance positioning wheel assembly includes a balance soft rubber wheel symmetrically arranged on both sides of the U-shaped positioning groove. The balance soft rubber wheel is rotatably connected to the fixed body through the balance bracket, and a tension spring is connected between the balance brackets.

A slide rail is matched with the slide hook position in the middle of the fixed body, and the first bracket hook and the second bracket hook are respectively disposed at two ends of the fixed body.

The sliding positioning body is provided with a sliding slot for limiting the maximum sliding displacement of the sliding hook, and the sliding hook is provided with a convex block that is slidingly engaged with the sliding slot. The sliding hook further includes a first card slot and a second card slot matched with the hanging post card slot; the sliding hook is further provided with a cylinder that is rotatably engaged with the slider.

Preferably, the sliding positioning body is further mounted with a reset elastic piece for adjusting the sliding fit of the sliding groove and the protrusion.

The balance soft rubber wheel is riveted to the balance bracket by the socket nail, the balance bracket is riveted to the fixed body by the socket nail, and the tension spring is also riveted to the fixed body by the socket nail, and the tension springs after being fixed are respectively buckled at the two balances On the earloop of the bracket.

Preferably, the sliding slot includes at least a first card slot and a second card slot for positioning and limiting the telescopic displacement of the sliding hook.

The invention has the advantages that the utility model has the advantages of compact structure and convenient installation, and is a door body displacement accessory with silencing and buffering effect, which can effectively ensure the design and detail optimization of the buffer component and the sound absorbing component in the buffer. The smoothness of the door body or window door when displacement occurs, reduces the sound of the door body displacement, avoids collision, and at the same time, with the action of the door body, the balance positioning wheel assembly and the door body rolling limit fit to ensure the accuracy of the displacement. It can be linearly buffered with the buffer, reliable and practical, and the displacement buffering effect is good.