Reciprocating motion mechanism and fascia gun

Abstract

The present invention discloses a reciprocating motion mechanism, including a power part, a cam is provided above the power part, an eccentrically arranged sliding rod is provided on the cam, the sliding rod is provided with a slider, the slider is provided with a shaft rod which reciprocates back and forth, and the slider is fixed below the shaft rod. The reciprocating motion mechanism of the present invention adopts an eccentric wheel to drive the slider to reciprocate through the sliding rod, thereby driving the shaft rod on the slider to reciprocate together; the sliding rod on the eccentric wheel moves back and forth in the slider, and the force of the sliding rod on the slider is only forward or backward, so that the axis of the shaft rod always coincides with the axis of the front cover, and it is not easy to deviate even after long-term use, and the vibration and noise are small.

Description

Technical Field

[0001] The present invention relates to the field of fascia guns, in particular to a reciprocating motion mechanism and a fascia gun. Background Art

[0002] The fascia gun is a soft tissue rehabilitation tool that relaxes the body's soft tissues through high-frequency impacts. It is an effective method for treating soft tissue pain, stimulating its proprioception function, and thus effectively relieving muscle tension and achieving the purpose of pain relief.

[0003] Most existing fascia guns are driven by a cam to drive the connecting rod to rotate. During the rotation of the connecting rod, the front end moves back and forth, driving the shaft to reciprocate back and forth. The massage head at the front end of the shaft impacts the corresponding part at high speed. The structure is complex to install. When the cam rotates one circle, the direction of the pulling force of the connecting rod on the shaft changes all the time. After long-term use, the shaft is prone to produce vibration and noise. Summary of the Invention

[0004] The purpose of the present invention is to provide a reciprocating motion mechanism and a fascia gun. The reciprocating motion mechanism of the present invention adopts an eccentric wheel to drive the slider to reciprocate through a sliding rod, thereby driving the shaft rod on the slider to reciprocate together; the sliding rod on the eccentric wheel moves back and forth left and right in the slider, and the force of the sliding rod on the slider is only forward or backward, so that the axis of the shaft rod always coincides with the axis of the front cover, and it is not easy to deviate even after long-term use, and the vibration and noise are small.

[0005] In order to achieve the above-mentioned object of the invention, the present invention adopts the following technical solutions:

[0006] A reciprocating motion mechanism includes a power piece, a cam is provided above the power piece, an eccentrically arranged slide rod is provided on the cam, the slide rod is fixed on the cam, a slider is provided on the slide rod, a shaft rod that reciprocates back and forth is provided on the slider, and the slider is fixed below the shaft rod.

[0007] The slider is oblong, and a slide groove matched with the slide rod is provided in the slider. The slide groove is strip-shaped, and a rolling bearing is provided on the slide rod. The rolling bearing abuts against the inner side of the slide groove.

[0008] A notch is provided below the shaft rod, the width of the notch is consistent with the width of the slider, and the slider is fixed in the notch by bolts.

[0009] The power part is a motor, and the output shaft of the motor is detachably connected to the cam center.

[0010] The shaft is provided with a fixing structure for improving stability, and the fixing structure includes a fixing kit and / or a retaining frame.

[0011] The fixing kit comprises a linear bearing and a bearing seat. The shaft rod is arranged in the linear bearing so as to be movable forward and backward, and the linear bearing is arranged in the bearing seat.

[0012] The retaining frame includes four connecting rods, which are connected end to end to form a cross telescopic rod.

[0013] A fascia massage gun includes a reciprocating mechanism, a support body disposed below the reciprocating mechanism, a housing disposed outside the support body, a front cover disposed at the front end of the support body, a shaft front end fixedly connected to the front cover by bolts, a bearing seat integrally connected to the support body, a handle disposed below the housing, a battery disposed within the handle, and a control chip disposed at the rear of the housing. Compared to existing technologies, the reciprocating mechanism and fascia massage gun employing the above-described technical solution have the following beneficial effects:

[0014] 1. With the fascia gun of the present invention, the reciprocating motion mechanism uses an eccentric wheel to drive the slider to reciprocate through the slide rod, thereby driving the shaft rod on the slider to reciprocate together.

[0015] 2. The slide rod on the eccentric wheel moves back and forth in the slider, and the force exerted by the slide rod on the slider is only forward or backward, so that the axis of the shaft rod always coincides with the axis of the front cover. It is not easy to deviate after long-term use, and the vibration and noise are small. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the fascia gun.

[0017] Figure 2 This is a schematic diagram of the disassembled structure of the fascia gun.

[0018] Figure markings: 1. cam; 11. slide rod; 12. rolling bearing; 2. slider; 21. slide groove; 3. shaft; 31. cutout groove; 4. fixing kit; 41. linear bearing; 42. bearing seat; 5. retaining frame; 51. cross telescopic rod; 6. support body; 7. housing; 71. handle; 72. front cover. DETAILED DESCRIPTION

[0019] The present invention will be further described below with reference to the accompanying drawings.

[0020] like Figures 1 to 2As shown, a fascia gun includes a shell 7, a support body 6 is provided in the shell 7, a front cover 72 is provided at the front end of the support body 6, the front end of the shaft rod 3 is fixedly connected to the front cover 72 by bolts, the bearing seat 42 is integrally connected to the support body 6, a handle 71 is provided below the shell 7, a battery is provided in the handle 71, and a control chip is provided at the rear of the shell 7; a reciprocating motion mechanism is provided on the support body 6, including a power piece, a cam 1 is provided above the power piece, an eccentrically arranged slide rod 11 is provided on the cam 1, the slide rod 11 is fixed on the cam 1, a slider 2 is provided on the slide rod 11, a shaft rod 3 that reciprocates back and forth is provided on the slider 2, the slider 2 is fixed below the shaft rod 3, and the reciprocating motion mechanism adopts an eccentric wheel through the slide rod 11 It drives the slider 2 to move back and forth, thereby driving the shaft rod 3 on the slider 2 to move back and forth together; when the shaft rod 3 extends to the front end, the position of the eccentric wheel is 0°, and when the eccentric wheel rotates 0°-180° clockwise, it will drive the slider 2 and the shaft rod 3 to move backward together, and when it rotates 181°-360°, it will drive the slide groove 21 and the shaft rod 3 to move forward together, and the eccentric wheel rotates in sequence, and the slider 2 and the shaft rod 3 reciprocate in sequence to realize the function; the slide rod 11 on the eccentric wheel moves back and forth left and right in the slider 2, and the force of the slide rod 11 on the slider 2 is only forward or backward, so that the axis of the shaft rod 3 always coincides with the axis of the front cover 72, and it is not easy to deviate after long-term use, and the vibration and noise are small.

[0021] The slider 2 is oblong, and a slide groove 21 is provided in the slider 2 to match the slide rod 11. The slide groove 21 is strip-shaped, and a rolling bearing 12 is provided on the slide rod 11. The rolling bearing 12 abuts against the inner side of the slide groove 21. The rolling bearing 12 makes the slide rod 11 smoother when driving the slider 2 in the slide groove 21, reduces friction, and prevents jamming. In addition, the cooperation of the cam 1, the slide rod 11 and the slider 2 makes it easy to bear the force on the shaft rod 3, and it will not deviate from the axis after long-term use, thereby reducing vibration and noise.

[0022] A notch groove 31 is provided under the shaft 3. The width of the notch groove 31 is consistent with the width of the slider 2. The slider 2 is fixed in the notch groove 31 by bolts. The slider 2 is limited on both sides of the notch groove 31 so that the bolts are not easy to loosen after the slider 2 is pulled forward or backward for a long time.

[0023] The power part is a motor, and the output shaft of the motor is detachably connected to the center of the cam 1.

[0024] The shaft 3 is provided with a fixing structure for improving stability, which includes a fixing kit 4 and / or a retaining frame 5. During the movement, the fixing kit 4 and / or the retaining frame 5 always keep the shaft 3 balanced and stable, preventing the shaft 3 from deviating from the axis and rotating.

[0025] The fixing kit 4 includes a linear bearing 41 and a bearing seat 42. The shaft 3 can be movably arranged in the linear bearing 41 forward and backward, and the linear bearing 41 is arranged in the bearing seat 42; the retaining frame 5 includes four connecting rods, and the four connecting rods are connected end to end to form a cross telescopic rod 51. A support body 6 is provided under the retaining frame 5, and one corner of the cross telescopic rod 51 is fixedly connected to one side of the support body 6. A connecting ear is provided at one end of the shaft 3, and the diagonal end of the cross telescopic rod 51 is fixedly connected to the connecting ear.

[0026] The support body 6 is made of an integral modular aluminum base. The bearing seat 42 is located in the middle of the support body 6. The bearing seat 42 and the support body 6 are integrated. The motor is fixed under the support body 6, which is easy to install and has higher precision.

[0027] Usage process:

[0028] 1. When the shaft 3 is extended to the front end, the position of the eccentric is 0°. When the eccentric rotates 0°-180° clockwise, the eccentric drives the slider 2 to move backward through the slide rod 11 and the slide groove 21, thereby driving the shaft 3 on the slider 2 to move backward together.

[0029] 2. When rotating 181°-360°, the slide 21 and the shaft 3 will move forward together, the eccentric wheel will rotate in turn, and the slider 2 and the shaft 3 will reciprocate in turn to realize the function.

[0030] 3. The rolling bearing 12 on the slide bar 11 makes the slide bar 11 drive the slider 2 in the slide groove 21 more smoothly, reduces friction and prevents jamming.

[0031] 4. The force exerted by the slide bar 11 on the slider 2 is only forward or backward, so that the axis of the shaft rod 3 always coincides with the axis of the front cover 72, and it is not easy to deviate after long-term use, thereby reducing vibration and noise.

[0032] 5. The linear bearing 41 and the cross telescopic rod 51 always keep the shaft 3 balanced and stable, preventing the shaft 3 from deviating from the axis and rotating.

[0033] The above is a preferred embodiment of the present invention. It is apparent to those skilled in the art that several modifications and improvements may be made without departing from the principles of the present invention, and these modifications and improvements should also be considered within the scope of protection of the present invention.

Claims

1. A reciprocating motion mechanism, characterized in that: The invention comprises a power member, wherein a cam (1) is provided above the power member, an eccentrically arranged slide bar (11) is provided on the cam (1), the slide bar (11) is fixed on the cam (1), a slider (2) is provided on the slide bar (11), a shaft rod (3) that reciprocates back and forth is provided on the slider (2), the slider (2) is fixed below the shaft rod (3), the slider (2) is oblong, a slide groove (21) that matches the slide bar (11) is provided in the slider (2), the slide groove (21) is strip-shaped, a rolling bearing (12) is provided on the slide bar (11), the rolling bearing (12) abuts against the inner side of the slide groove (21), a notch groove (31) is provided below the shaft rod (3), the width of the notch groove (31) is consistent with the width of the slider (2), and the slider (2) is fixed in the notch groove (31) by bolts.

2. A reciprocating motion mechanism according to claim 1, characterized in that: The power part is a motor, and the output shaft of the motor is detachably connected to the center of the cam (1).

3. A reciprocating motion mechanism according to claim 1, characterized in that: A fixing structure for improving stability is provided on the shaft (3), and the fixing structure includes a fixing kit (4) and / or a retaining frame (5).

4. A reciprocating motion mechanism according to claim 3, characterized in that: The fixing kit (4) includes a linear bearing (41) and a bearing seat (42). The shaft (3) is movably arranged in the linear bearing (41) and the linear bearing (41) is arranged in the bearing seat (42).

5. A reciprocating motion mechanism according to claim 3, characterized in that: The retainer (5) comprises four connecting rods, which are connected end to end to form a cross telescopic rod (51).

6. A fascia gun, characterized in that The invention comprises a reciprocating motion mechanism according to any one of claims 1 to 5, wherein a support body (6) is provided below the reciprocating motion mechanism, a shell (7) is provided outside the support body (6), a front cover (72) is provided at the front end of the support body (6), the front end of the shaft (3) is fixedly connected to the front cover (72) by bolts, the bearing seat (42) is integrally connected to the support body (6), a handle (71) is provided below the shell (7), a battery is provided in the handle (71), and a control chip is provided at the rear of the shell (7).

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