CN217339304U

CN217339304U - Fascia gun

Info

Publication number: CN217339304U
Application number: CN202123062609.6U
Authority: CN
Inventors: 李毅; 戴伊威; 朱辰炜; 郭明飞; 李志鑫; 李研彪
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-09-02
Anticipated expiration: 2031-12-08

Abstract

The utility model belongs to the technical field of fascia guns, in particular to a fascia gun, which comprises a machine body, wherein a driving mechanism, a transmission mechanism and a ball head connecting handle are arranged in the machine body, and the transmission mechanism comprises two transmission units; each group of transmission units comprises a first transmission arm, a second transmission arm and a third transmission arm which are connected with each other; the two first transmission arms are connected with an output shaft of the driving mechanism, and the two third transmission arms are connected with the ball head connecting handle. The utility model discloses a set up drive mechanism into two sets of transmission units, two sets of transmission units are complicated bilateral mechanism of amplification, have effectively reduced the counter force of all directions when guaranteeing that the transmission is stable.

Description

Fascia gun

Technical Field

The utility model belongs to the technical field of the manadesma rifle, concretely relates to manadesma rifle.

Background

The fascia guns in the market are mainly provided with motors as drivers, a single transmission mechanism is used, noise is high, the whole gun body vibrates violently in the using process, and the single transmission mechanism cannot counteract the reaction force in all directions. For example, chinese patent No. CN 202022456610.1 effectively solves the dead point problem of the transmission mechanism, but still does not solve the problem of the reaction force in each direction, and although the damping ring is used to reduce noise and vibration, the effect is not good.

To sum up, the utility model discloses a complicated bilateral mechanism of amplifying can guarantee that the transmission is stable to increase linear bearing at the head and the tail, reduced the effort of all directions.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the technical problem and providing a fascia gun.

In order to realize the technical purpose, the utility model adopts the following technical proposal:

a fascia gun comprises a machine body, wherein a driving mechanism, a transmission mechanism and a ball head connecting handle are arranged in the machine body, and the transmission mechanism comprises two transmission units; each group of transmission units comprises a first transmission arm, a second transmission arm and a third transmission arm which are connected with each other; the two first transmission arms are connected with an output shaft of the driving mechanism, and the two third transmission arms are connected with the ball head connecting handle.

Furthermore, the transmission mechanism also comprises a first connecting piece and a second connecting piece; the first connecting piece comprises a connecting cylinder and a first connecting seat; the second connecting piece comprises a connecting shaft and a second connecting seat; the connecting cylinder is sleeved outside the output shaft of the driving mechanism and connected with the output shaft of the driving mechanism, the two first transmission arms are connected with the first connecting seat, and the two third transmission arms are connected with the second connecting seat; the connecting shaft is connected with the ball head connecting handle.

Furthermore, a first linear bearing and a second linear bearing are arranged in the shell; the first linear bearing is sleeved outside the connecting cylinder, and the second linear bearing is sleeved outside the connecting shaft.

Furthermore, the first connecting seat and the second connecting seat are respectively provided with two first transmission pieces, and the head ends of the two first transmission arms are respectively in rotary connection with the two first transmission pieces of the first connecting seat; the tail ends of the two third transmission arms are respectively connected with the two first transmission pieces of the second connecting seat in a rotating mode; the tail end of the first transmission arm corresponding to each group of transmission units is rotatably connected with the head end of the second transmission arm through a second transmission piece; the tail end of the second transmission arm corresponding to each group of transmission mechanisms is rotatably connected with the head end of the third transmission arm through a third transmission piece; the middle parts of the two second transmission arms are rotatably connected through a third transmission piece.

Furthermore, the first transmission piece comprises two transmission units, each transmission unit comprises a central shaft, and a first bearing, a first shaft sleeve and a second bearing are sequentially sleeved outside the central shaft; the first connecting seat is provided with two bulges; the first transmission piece is positioned at the joint of the head end of the first transmission arm and the first connecting seat, one end of the central shaft is positioned in the through hole of the first transmission arm, and the other end of the central shaft is positioned in the raised through hole; the first bearing is positioned in the through hole of the first transmission arm, and the second bearing is positioned in the through hole of the bulge; the central shaft is hollow with openings at two ends, and the openings at two ends are provided with bolts; the nut corresponding to the first transmission arm extends out of the through hole of the first transmission arm, and the nut corresponding to the bulge extends out of the through hole of the bulge; two nuts between the two first transmission arms are provided with grooves, and the two grooves are opposite.

Furthermore, the second connecting seat is provided with two side plates, and the side plates are provided with through holes; the first transmission piece is positioned at the joint of the tail end of the third transmission arm and the second connecting seat, one end of the central shaft is positioned in the through hole of the third transmission arm, and the other end of the central shaft is positioned in the through hole of the side plate; the first bearing is positioned in the through hole of the third transmission arm, and the second bearing is positioned in the through hole of the side plate; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; the nut corresponding to the third transmission arm extends out of the through hole of the third transmission arm, and the nut corresponding to the side plate extends out of the through hole of the side plate; two nuts between two third transmission arms are provided with grooves, and the two grooves are opposite.

Furthermore, the third transmission part comprises a central shaft, and a first bearing, a first shaft sleeve and a second bearing are sequentially sleeved outside the central shaft; the third transmission part is positioned at the joint of the second transmission arm and the third transmission arm, one end of the central shaft is positioned in the through hole of the second transmission arm, and the other end of the central shaft is positioned in the through hole of the third transmission arm; the first bearing is positioned in the through hole of the second transmission arm, and the second bearing is positioned in the through hole of the third transmission arm; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the second transmission arm through hole and the third transmission arm through hole.

Furthermore, one end of the central shaft is positioned in the through hole of one second transmission arm, and the other end of the central shaft is positioned in the through hole of the other second transmission arm; the first bearing is positioned in the through hole of one second transmission arm, and the second bearing is positioned in the through hole of the other second transmission arm; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the through holes of the two second transmission arms.

Furthermore, the second transmission part comprises a central shaft, and a first shaft sleeve, a first bearing, a second shaft sleeve, a second bearing and a third shaft sleeve are sequentially sleeved outside the central shaft; the central shaft penetrates through the first transmission arm and the second transmission arm, the first bearing is positioned in the through hole of the first transmission arm, and the second bearing is positioned in the through hole of the second transmission arm; the first shaft sleeve is positioned between the first roller and the first transmission arm, the second shaft sleeve is positioned between the first transmission arm and the second transmission arm, and the third shaft sleeve is positioned between the second transmission arm and the second roller; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the first roller and the second roller; the transmission assembly further comprises a guide rail arranged inside the shell, and the first roller and the second roller are respectively matched with the two guide rails in a rolling mode.

Furthermore, two snap springs are sleeved outside the central shaft corresponding to the second transmission member, one snap spring is positioned between the first shaft sleeve and the first transmission arm, and the other snap spring is positioned between the second transmission arm and the third shaft sleeve.

Compared with the prior art, the utility model has the beneficial technical effects that:

the utility model discloses a set up drive mechanism into two sets of transmission units, two sets of transmission units are complicated bilateral mechanism of amplification, can guarantee that the transmission is stable to increase linear bearing at the head and the tail, reduced the effort of each direction.

Drawings

FIG. 1 is a schematic view of an internal structure of the housing of the present embodiment;

FIG. 2 is a perspective view of the transmission unit of the present embodiment;

FIG. 3 is a front view of an embodiment drive mechanism;

FIG. 4 is a schematic view of the connection between the transmission unit and the first connecting member according to the present embodiment;

FIG. 5 is a schematic structural diagram of a first connecting member according to the present embodiment;

FIG. 6 is a schematic view of the connection between the transmission unit and the second connecting member according to the present embodiment;

FIG. 7 is a schematic structural view of a second connecting member according to the present embodiment;

FIG. 8 is a schematic center axis structure diagram of the second transmission member 14 of the present embodiment;

FIG. 9 is a schematic center axis structure diagram of the third transmission member 15 according to the embodiment;

fig. 10 is a schematic central axis structure diagram of the first transmission member 13 of the present embodiment.

In the figure, a driving mechanism 1, a first transmission arm 2, a second transmission arm 3, a third transmission arm 4, a ball head connecting handle 5, a ball head 6, a connecting cylinder 7, a first connecting seat 8, a bulge 9, a connecting shaft 10, a second connecting seat 11, a side plate 12, a first transmission piece 13, a second transmission piece 14, a third transmission piece 15, a snap spring 16, a first linear bearing 17, a second linear bearing 18, a first roller 19, a second roller 20 and a track 21 are arranged.

Detailed Description

The invention will be further described with reference to specific examples, but the scope of the invention is not limited thereto.

As shown in fig. 1-10, the fascia gun of this embodiment includes a body, a driving mechanism 1, a transmission mechanism and a ball joint connecting handle 5, wherein the transmission mechanism includes two sets of transmission units; each group of transmission units comprises a first transmission arm 2, a second transmission arm 3 and a third transmission arm 4 which are connected with each other; two second transmission arms 3 are connected, two first transmission arms 2 are connected with an output shaft of the driving mechanism 1, and two third transmission arms 4 are connected with a ball head connecting handle 5. The ball head connecting handle 5 is connected with the ball head 6. The output shaft of the driving mechanism 1 makes telescopic motion to drive the two groups of transmission units, the ball head connecting handle 5 and the ball head 6 to make telescopic motion integrally. This embodiment is through setting up two sets of drive unit, and two sets of drive unit are complicated bilateral mechanism of amplification, have effectively reduced the counter force of all directions when guaranteeing the transmission stability.

The transmission mechanism of the embodiment further comprises a first connecting piece and a second connecting piece; the first connecting piece comprises a connecting cylinder 7 and a first connecting seat 8; the second connecting piece comprises a connecting shaft 10 and a second connecting seat 11; the connecting cylinder 7 is sleeved outside the output shaft of the driving mechanism 1 and connected with the output shaft of the driving mechanism 1, the two first transmission arms 2 are connected with the first connecting seat 8, and the two third transmission arms 4 are connected with the second connecting seat 11; the connecting shaft 10 is connected with the ball head connecting handle 5; in order to enhance the motion stability of the transmission mechanism, a first linear bearing 17 and a second linear bearing 18 are arranged in the shell, and the first linear bearing 17 and the second linear bearing 18 are fixed in the shell. The first linear bearing 17 is sleeved outside the connecting cylinder 7, and the second linear bearing 18 is sleeved outside the connecting shaft 10.

In order to facilitate the connection between the first connecting seat 8 and the two first transmission arms 2, the second connecting seat 11 is connected with the two third transmission arms 4, the first connecting seat 8 and the second connecting seat 11 are both provided with two first transmission pieces 13, and the head ends of the two first transmission arms 2 are respectively rotatably connected with the two first transmission pieces 13 of the first connecting seat 8; the tail ends of the two third transmission arms 4 are respectively rotatably connected with the two first transmission pieces 13 of the second connecting seat 11. The tail end of the first transmission arm 2 corresponding to each group of transmission units is rotatably connected with the head end of the second transmission arm 3 through a second transmission part 14; the tail end of the second transmission arm 3 corresponding to each group of transmission mechanisms is rotatably connected with the head end of the third transmission arm 4 through a third transmission piece 15; the middle parts of the two second transmission arms 3 are rotatably connected through a third transmission piece 15.

The first transmission member 13 of this embodiment includes a central shaft, and a first bearing, a first shaft sleeve, and a second bearing are sequentially sleeved outside the central shaft; the first connecting seat 8 is provided with two bulges 9; the first transmission piece 13 is positioned at the joint of the head end of the first transmission arm 2 and the first connecting seat 8, one end of the central shaft is positioned in the through hole of the first transmission arm 2, and the other end of the central shaft is positioned in the through hole of the bulge 9; the first bearing is positioned in the through hole of the first transmission arm 2, and the second bearing is positioned in the through hole of the bulge 9; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; the nut corresponding to the first transmission arm 2 extends out of the through hole of the first transmission arm 2, and the nut corresponding to the bulge 9 extends out of the through hole of the bulge 9; two nuts between the two first transmission arms 2 are both provided with grooves, and the two grooves are opposite. The second connecting seat 11 of the present embodiment is provided with two side plates 12, and the side plates 12 are provided with through holes; the first transmission piece 13 is positioned at the joint of the tail end of the third transmission arm 4 and the second connecting seat 11, one end of the central shaft is positioned in the through hole of the third transmission arm 4, and the other end of the central shaft is positioned in the through hole of the side plate 12; the first bearing is positioned in the through hole of the third transmission arm 4, and the second bearing is positioned in the through hole of the side plate 12; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; the nut corresponding to the third transmission arm 4 extends out of the through hole of the third transmission arm 4, and the nut corresponding to the side plate 12 extends out of the through hole of the side plate 12; two nuts between the two third transmission arms 4 are provided with grooves, and the two grooves are opposite.

In this embodiment, the inner diameter of the first sleeve of the first transmission member 13 is simultaneously greater than the inner diameter of the through hole of the first transmission arm 2, the inner diameter of the through hole of the protrusion 9, the inner diameter of the through hole of the third transmission arm, and the inner diameter of the through hole of the side plate. Therefore, the first transmission piece 13 located at the connection between the head end of the first transmission arm 2 and the first connection seat 8, and the first shaft sleeve are located between the protrusion 9 and the first transmission arm 2. And the first transmission piece 13 is positioned at the joint of the tail end of the third transmission arm 4 and the second connecting seat 11, and the first shaft sleeve is positioned between the side plate 12 and the third transmission arm 4. The first shaft sleeve and the central shaft are of an integral structure, and the central shaft with the first shaft sleeve is integrally a stepped shaft. In this embodiment, the central axis of the first transmission member 13 is formed in a stepped shaft shape, and the outer surface of the nut is formed with a groove, so that the friction force generated when the two first transmission members 13 are in contact with each other can be reduced.

The third transmission member 15 of this embodiment includes a central shaft, and a first bearing, a first shaft sleeve, and a second bearing are sequentially sleeved outside the central shaft; the third transmission piece 15 is positioned at the joint of the second transmission arm 3 and the third transmission arm 4, one end of the central shaft is positioned in the through hole of the second transmission arm 3, and the other end of the central shaft is positioned in the through hole of the third transmission arm 4; the first bearing is positioned in the through hole of the second transmission arm 3, and the second bearing is positioned in the through hole of the third transmission arm 4; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the through hole of the second transmission arm 3 and the through hole of the third transmission arm 4. The third transmission piece 15 is positioned at the joint of the two second transmission arms 3, one end of the central shaft is positioned in the through hole of one second transmission arm 3, and the other end of the central shaft is positioned in the through hole of the other second transmission arm 3; the first bearing is positioned in a through hole of one second transmission arm 3, and the second bearing is positioned in a through hole of the other second transmission arm 3; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the through holes of the two second transmission arms 3.

The inner diameter of the first shaft sleeve of the third transmission member 15 of this embodiment is larger than the inner diameter of the through hole of the second transmission arm and the inner diameter of the through hole of the third transmission arm. Therefore, the third transmission member 15 is located at the connection position of the second transmission arm 3 and the third transmission arm 4, and the first sleeve is located between the second transmission arm 3 and the third transmission arm 4. And the third transmission piece 15 is positioned at the joint of the two second transmission arms 3, and the first shaft sleeve is positioned between the two second transmission arms 3. The first shaft sleeve and the central shaft of the third transmission member 15 are of an integral structure, and the central shaft with the first shaft sleeve is integrally a stepped shaft. In this embodiment, the center axis of the third transmission member 15 is formed in a stepped axis shape, so that the frictional force between the two transmission arms can be reduced.

The second transmission member 14 of this embodiment includes a central shaft, and a first shaft sleeve, a first bearing, a second shaft sleeve, a second bearing, and a third shaft sleeve are sequentially sleeved outside the central shaft; the center pin runs through first transmission arm 2, second transmission arm 3, and first bearing is located the through-hole of first transmission arm 2, and the second bearing is located the through-hole of second transmission arm 3. A first roller 19 and a second roller 20 are sleeved outside the central shaft, the first shaft sleeve is positioned between the first roller and the first transmission arm 2, the second shaft sleeve is positioned between the first transmission arm 2 and the second transmission arm 3, and the third shaft sleeve is positioned between the second transmission arm 3 and the second roller; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the first roller and the second roller; the transmission assembly further comprises a guide rail 21 arranged inside the shell, and the first roller and the second roller are respectively matched with the two guide rails in a rolling manner.

In this embodiment, the inner diameter of the second sleeve of the second transmission member 14 is greater than the inner diameter of the through hole of the first transmission arm and the inner diameter of the pupil of the second transmission arm, so that the second sleeve is located between the second transmission arm 3 and the third transmission arm 4. The inner diameter of the first shaft sleeve is larger than the inner diameter of the through hole of the first transmission arm and the inner diameter of the first roller, so that the first shaft sleeve is positioned between the first transmission arm 2 and the first roller. The inner diameter of the third shaft sleeve is larger than the inner diameter of the through hole of the second transmission arm and the inner diameter of the second roller, so that the third shaft sleeve is positioned between the second transmission arm 3 and the second roller. The first shaft sleeve, the second shaft sleeve and the third shaft sleeve of the second transmission member 14 are integrated with the central shaft, and the central shaft with the first shaft sleeve, the second shaft sleeve and the third shaft sleeve is a stepped shaft as a whole. In the present embodiment, the center axis of the second transmission member 14 is formed in a stepped axis shape, so that the frictional force between the two transmission arms can be reduced. In order to improve the connection stability between the first transmission arm 2 and the central shaft and the connection stability between the second transmission arm 3 and the central shaft, two snap springs 16 are further sleeved outside the second transmission part corresponding to the central shaft. One snap spring 16 is located between the first shaft sleeve and the first transmission arm 2, and the other snap spring 16 is located between the second transmission arm 3 and the third shaft sleeve.

In conclusion, the transmission structure of the present embodiment includes two sets of transmission units, the first connecting member, the second connecting member, the first transmission member 13, the second transmission member 14 and the third transmission member 15, so that the stability of transmission can be ensured, and the reaction force in each direction can be effectively reduced.

The embodiments of the present invention have been described in detail, and those skilled in the art can easily understand that there are various changes in the embodiments according to the idea of the present invention, and such changes should be considered as the protection scope of the present invention.

Claims

1. The utility model provides a manadesma rifle, includes the organism, is equipped with actuating mechanism, drive mechanism and bulb connective handle in the organism, its characterized in that:

the transmission mechanism comprises two transmission units; each group of transmission units comprises a first transmission arm, a second transmission arm and a third transmission arm which are connected with each other; the two first transmission arms are connected with an output shaft of the driving mechanism, and the two third transmission arms are connected with the ball head connecting handle.

2. The fascia gun of claim 1, wherein:

the transmission mechanism also comprises a first connecting piece and a second connecting piece;

the first connecting piece comprises a connecting cylinder and a first connecting seat; the second connecting piece comprises a connecting shaft and a second connecting seat; the connecting cylinder is sleeved outside the output shaft of the driving mechanism and connected with the output shaft of the driving mechanism, the two first transmission arms are connected with the first connecting seat, and the two third transmission arms are connected with the second connecting seat; the connecting shaft is connected with the ball head connecting handle.

3. The fascia gun of claim 2, wherein:

a first linear bearing and a second linear bearing are arranged in the shell; the first linear bearing is sleeved outside the connecting cylinder, and the second linear bearing is sleeved outside the connecting shaft.

4. The fascia gun of claim 2, wherein:

the first connecting seat and the second connecting seat are respectively provided with two first transmission pieces, and the head ends of the two first transmission arms are respectively connected with the two first transmission pieces of the first connecting seat in a rotating manner; the tail ends of the two third transmission arms are respectively connected with the two first transmission pieces of the second connecting seat in a rotating mode; the tail end of the first transmission arm corresponding to each group of transmission units is rotatably connected with the head end of the second transmission arm through a second transmission piece; the tail end of the second transmission arm corresponding to each group of transmission mechanisms is rotatably connected with the head end of the third transmission arm through a third transmission piece; the middle parts of the two second transmission arms are rotatably connected through a third transmission piece.

5. The fascia gun of claim 4, wherein: the first transmission piece comprises two transmission single bodies, each transmission single body comprises a central shaft, and a first bearing, a first shaft sleeve and a second bearing are sequentially sleeved outside the central shaft; the first connecting seat is provided with two bulges; the first transmission piece is positioned at the joint of the head end of the first transmission arm and the first connecting seat, one end of the central shaft is positioned in the through hole of the first transmission arm, and the other end of the central shaft is positioned in the raised through hole; the first bearing is positioned in the through hole of the first transmission arm, and the second bearing is positioned in the through hole of the bulge; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; the nut corresponding to the first transmission arm extends out of the through hole of the first transmission arm, and the nut corresponding to the bulge extends out of the through hole of the bulge; two nuts between the two first transmission arms are both provided with grooves, and the two grooves are opposite.

6. The fascia gun of claim 5, wherein:

the second connecting seat is provided with two side plates, and the side plates are provided with through holes; the first transmission piece is positioned at the joint of the tail end of the third transmission arm and the second connecting seat, one end of the central shaft is positioned in the through hole of the third transmission arm, and the other end of the central shaft is positioned in the through hole of the side plate; the first bearing is positioned in the through hole of the third transmission arm, and the second bearing is positioned in the through hole of the side plate; the central shaft is hollow with openings at two ends, and the openings at two ends are provided with bolts; the nut corresponding to the third transmission arm extends out of the through hole of the third transmission arm, and the nut corresponding to the side plate extends out of the through hole of the side plate; two nuts between two third transmission arms correspond all are equipped with the recess, and two recesses are relative.

7. The fascia gun of claim 4, wherein: the third transmission part comprises a central shaft, and a first bearing, a first shaft sleeve and a second bearing are sequentially sleeved outside the central shaft; the third transmission part is positioned at the joint of the second transmission arm and the third transmission arm, one end of the central shaft is positioned in the through hole of the second transmission arm, and the other end of the central shaft is positioned in the through hole of the third transmission arm; the first bearing is positioned in the through hole of the second transmission arm, and the second bearing is positioned in the through hole of the third transmission arm; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the second transmission arm through hole and the third transmission arm through hole.

8. The fascia gun of claim 7, wherein: one end of the central shaft is positioned in the through hole of one second transmission arm, and the other end of the central shaft is positioned in the through hole of the other second transmission arm; the first bearing is positioned in the through hole of one second transmission arm, and the second bearing is positioned in the through hole of the other second transmission arm; the central shaft is hollow with openings at two ends, and the openings at two ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the through holes of the two second transmission arms.

9. The fascia gun of claim 4, wherein: the second transmission part comprises a central shaft, and a first shaft sleeve, a first bearing, a second shaft sleeve, a second bearing and a third shaft sleeve are sequentially sleeved outside the central shaft; the central shaft penetrates through the first transmission arm and the second transmission arm, the first bearing is positioned in the through hole of the first transmission arm, and the second bearing is positioned in the through hole of the second transmission arm;

a first roller and a second roller are sleeved outside the central shaft, the first shaft sleeve is positioned between the first roller and the first transmission arm, the second shaft sleeve is positioned between the first transmission arm and the second transmission arm, and the third shaft sleeve is positioned between the second transmission arm and the second roller; the central shaft is hollow with two open ends, and the two open ends are provided with bolts; two nuts corresponding to the two bolts respectively extend out of the first roller and the second roller;

the transmission assembly further comprises a guide rail arranged inside the shell, and the first roller and the second roller are respectively in rolling fit with the two guide rails.

10. The fascia gun of claim 9, wherein: two clamp springs are sleeved outside the central shaft corresponding to the second transmission member, one clamp spring is positioned between the first shaft sleeve and the first transmission arm, and the other clamp spring is positioned between the second transmission arm and the third shaft sleeve.