Rib membrane gun

Abstract

The invention relates to a fascia gun, which comprises a shell, a telescopic driving device is arranged in the shell, the telescopic driving device comprises an outer frame, a driving motor is arranged on one side of the outer frame, an outer cylindrical surface cam is arranged on the driving motor, a telescopic sleeve is further arranged on the outer frame, a rotary sleeve is arranged at one end of the telescopic sleeve, the outer cylindrical surface cam is located in the rotary sleeve, two sliding pins arranged at an interval of 180 degrees are arranged on the outer wall of the rotary sleeve, the sliding pins extend into the rotary sleeve, and a first sliding groove and a second sliding groove are formed in the outer wall of the outer cylindrical surface cam at an interval of 180 degrees in the circumferential direction of the outer wall of the outer cylindrical surface cam. The groove depth of the first sliding groove is larger than that of the second sliding groove, the two sliding pins are in sliding fit with the first sliding groove and the second sliding groove respectively, and the length of the sliding pin of the first sliding groove penetrating into the inner wall of the rotary sleeve is larger than that of the second sliding groove. The fascia gun has the advantages of being high in bearing capacity, stable and reliable in work and short in axial size.

Description

technical field [0001] The invention relates to the field of massagers, in particular to a fascia gun. Background technique [0002] There are many types of existing massagers, among which the fascia gun is an essential equipment for anti-loosening massage, and its driving methods are also different. The general fascia gun uses a motor to drive the crankshaft, and the crankshaft drives the connecting rod to realize the fascia loosening. The expansion and contraction of the gun massage head makes the drive mechanism larger in the longitudinal direction, which is not conducive to the miniaturization of the product; [0003] According to the above problems, designers have continuously optimized and improved, such as changing the traditional brushed motor to a brushless motor, greatly shortening the axial size of the motor, or changing the crankshaft and crank structure to the form of end face cam and pin head cooperation to achieve miniaturization , but the slideway of the end...

AI Technical Summary

Problems solved by technology

[0006] In the above structure, the first chute and the second chute are arranged on the outer wall of the outer cylindrical cam, and the reciprocating strokes of the two are arranged staggered by 180 degrees in the circumferential direction of the outer wall of the outer cylindrical cam, so that the sliding pin can move in the circumferential direction of the rotary sleeve. The top is set at 180 degrees, and is respectively adapted to slide with the first chute and the second chute, which ensures the stress stability of the telescopic sleeve during reciprocating motion and prevents the telescopic sleeve from being skewed. The first chute and the second chute The intersection points between the two slots are located in the middle of each other’s stroke, effectively avoiding the situation where the first chute and the second chute bear the largest reciprocating reverse load at the 6 o’clock and 12 o’clock positions of the cam section on the outer cylindrical surface. In the area, when the outer cylindrical surface cam drives the telescopic sleeve to enter the middle position of the stroke of the reverse movement, skillfully use the auxiliary guidance of the deeper first chute and the sliding pin to continue to push the telescopic sleeve to slide, so that it is compatible with the second chute. When the matching sliding pin passes through the intersecting part of the second chute and the first chute and loses the guiding support with the second chute, it can smoothly cross the intersection point, so that the second chute can re-fit and slide with the sliding pin, which solves the problem of single The bearing capacity of the chute is not enough, and the parallel double chute is unevenly stressed, which ensures the stability and reliability of the work and prolongs the life of the fascia gun.

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