Fascia gun

Abstract

This utility model discloses a fascia gun in the field of massage equipment, including a gun head and a handle. The rear end of the gun head housing is rotatably connected to the front end of the handle housing. Around the axis of rotation of both, multiple grooves are arranged in a circular array at the rear end of the gun head housing. A limiting mechanism is provided inside the front end of the handle housing, comprising a drive block and a sliding block. The front end of the sliding block has a limiting part, and its rear end cooperates with the drive block. This utility model utilizes the limiting mechanism composed of the sliding block and the drive block to limit the angle of the gun head. When the drive block is pressed, the sliding block moves backward under the action of a spring, causing the limiting part of the sliding block to disengage from the groove, thereby reducing the rotational resistance of the gun head and improving the smoothness of adjusting the gun head angle. After the drive block is released, the drive block pushes the limiting part of the sliding block into the groove under the action of a spring, limiting the position of the sliding block and achieving self-locking between the gun head and the handle, ensuring the stability of the gun head angle position.

Description

Technical Field

[0001] This utility model relates to the field of massage equipment, and more particularly to a fascia gun. Background Technology

[0002] A fascia gun is a massage device that uses a massage head to reciprocate and strike the body. To facilitate personal use of this handheld device for massaging different parts of the body, some fascia guns employ an adjustable striking angle structure. For example, a fascia gun with an adjustable massage head angle disclosed in patent document CN215607520U mainly uses multiple grooves arranged in a circular array around its axis at the rear end of the gun head. A positioning elastic element inside the handle engages with these grooves to limit the rotation angle. When adjusting the angle, the gun head needs to be rotated, using the grooves to press against the ball bearing and spring in the positioning elastic element. Only after the spring retracts can the ball bearing disengage from the groove. Therefore, during angle adjustment, the ball bearing must first engage with the corresponding groove after each rotation, resulting in significant resistance. Furthermore, the positioning elastic element lacks a self-locking function. During use, due to different massage angles, the gun head angle may change due to the large reaction force, making it impossible to ensure the stability of the gun head angle. Utility Model Content

[0003] To overcome the aforementioned shortcomings of existing fascia guns, the technical problem to be solved by this utility model is to provide a fascia gun that allows for easy adjustment of the gun head angle and ensures stable positioning.

[0004] The technical solution adopted by this utility model to solve its technical problem is: A fascia gun includes a gun head and a handle. The rear end of the gun head housing is rotatably connected to the front end of the handle housing. Around their pivot axis, multiple grooves are arranged in a circular array at the rear end of the gun head housing. The front end of the handle housing has a limiting mechanism that engages with the grooves. The limiting mechanism includes a driving block and a sliding block, both slidably mounted on a fascia support frame within the handle housing. A first spring and a second spring are respectively provided between the sliding block and the support frame. The front end of the sliding block has a limiting portion that can be inserted into the groove, and the rear end has a first guide portion. The side of the driving block has a second guide portion that cooperates with the first guide portion. When the first and second springs are in their natural state, the driving block causes the limiting portion at the front end of the sliding block to insert into the groove. When the driving block is pressed to compress the second spring, the sliding block moves backward under the action of the first spring, causing the limiting portion to exit the groove. After the driving block is released, both the sliding block and the first and second springs return to their natural state. The limiting mechanism has the characteristic that the driving block can drive the sliding block to move, but the sliding block cannot drive the driving block to move in the opposite direction. Therefore, by pressing and releasing the driving block, the sliding block can be moved backward and forward, thereby causing the limiting part on the sliding block to exit or enter the groove. When the limiting part exits the groove, the gun head can be rotated smoothly, reducing adjustment resistance; when the limiting part enters the groove, it can provide a stable locking effect on the gun head, avoiding the problem of gun head deflection due to large reaction force.

[0005] The gun head housing includes a spherical face shell and a front nozzle located on the front of the spherical face shell. A pivot is located on each side of the spherical face shell. The groove is located on the back of the spherical face shell. The front end of the handle housing has a spherical outer shell that matches the spherical face shell. The spherical outer shell has retaining rings on both sides that are rotatably connected to the pivots. An annular groove is located on the outer side of the retaining rings, and a silicone ring is pressed between the spherical face shell and the outer shell within the annular groove. The spherical face shell is used to accommodate a large motor assembly, the front nozzle is used to accommodate a piston rod, and the silicone ring dampens the rotational connection between the gun head and the handle, improving the user experience when adjusting the gun head angle.

[0006] The spherical outer shell has openings on its front and top for the movement of the front nozzle. The length of the openings is adjustable so that the angle between the axis of the front nozzle and the axis of the handle is within the range of 0° to 90°. The positions of the two outermost grooves on the spherical shell correspond to the positions when the axis of the front nozzle is at 0° and the axis of the handle is at 90°, respectively. The central angle between the two adjacent grooves in the middle is 10° to 30°. The length of the openings limits the adjustment range of the nozzle, and the spacing between the grooves allows the limiting mechanism to lock and fix the nozzle at multiple angles, meeting different usage requirements.

[0007] The rib bracket is provided with a first sliding groove, and a positioning rib is provided in the middle of the first sliding groove. The sliding block is slidably disposed in the first sliding groove, and a clearance groove is provided in the middle to avoid the positioning rib. The first spring is disposed between one end of the positioning rib and the clearance groove. Providing a clearance groove in the middle of the sliding block to install the first spring can save space and limit the movement range of the sliding block by utilizing the contact between the clearance groove and the positioning rib.

[0008] The rib frame is also provided with a second sliding groove. The driving block is slidably disposed in the second sliding groove. The inner end of the driving block has a receiving cavity. The second spring is disposed between the bottom of the receiving cavity and the inner end of the second sliding groove. The outer end of the driving block passes through the through hole on the handle housing under the action of the second spring and abuts against the inner periphery of the through hole through the limiting ring thereon. The receiving cavity can fix and guide the second spring, while saving space. The driving block achieves outward movement limitation by contacting the inner side of the housing with the limiting ring, and achieves inward movement limitation by contacting the inner end of the second sliding groove with its inner end. The two extreme positions of the driving block moving outward and inward correspond to the extreme positions of the sliding block moving forward and backward, that is, the positions where the limiting part is completely inserted into the groove and completely removed from the groove.

[0009] To facilitate the installation of the sliding block and the drive block, and to ensure the stability of their connection with the rib frame, the rib frame is set on one half of the handle housing, and the side of the first and second slide grooves away from the half-shell is an open structure. A cover plate is set on the rib frame to confine the sliding block and the drive block within the first and second slide grooves.

[0010] To further improve the smoothness of sliding of the sliding block and the driving block, a first guide strip and a second guide strip extending along their sliding direction are respectively provided on the side of the sliding block and the driving block facing the cover plate. The cover plate is provided with a first guide groove and a second guide groove that match the first guide strip and the second guide strip. A limiting plate is also provided at the front end of the sliding block. The cover plate is provided with a limiting groove that slides with the limiting plate. When the sliding block moves to the rear end, the limiting plate contacts the bottom of the limiting groove.

[0011] The first guide portion has a first limiting surface at its bottom and a first inclined surface in front of the first limiting surface. The driving block is located below the sliding block. The second guide portion includes a second limiting surface, a second inclined surface, and a third limiting surface connected sequentially from back to front, with the third limiting surface positioned higher than the second limiting surface. In its natural state, the third limiting surface abuts against the lower part of the first limiting surface, placing the sliding block at its foremost position. When the driving block is pressed forward, the sliding block moves backward under the action of the first spring until both reach their limit positions. At this point, the first limiting surface contacts the second limiting surface, and the first inclined surface contacts the second inclined surface. When the driving block is released, the driving block moves backward under the action of the second spring and, with the cooperation of the first and second inclined surfaces, drives the sliding block forward until it returns to its natural state. This scheme mainly uses the second and third limiting surfaces of the drive block at different heights to limit the front and rear positions of the sliding block. It uses the cooperation of the first and second inclined surfaces to transmit the force and realize the linkage between the drive block and the sliding block. Thus, the gun head can be released and locked by pressing and releasing the drive block.

[0012] To increase the massage range of the fascia gun, this invention also features an extended handle, which is detachably mounted at the rear end of the handle housing.

[0013] The extended handle is installed on the handle housing as follows: a insertion slot is provided at the rear end of the handle housing, and a latch is provided on each of the opposite sides of the inner wall of the insertion slot. The front end of the extended handle has a connector that can be inserted into the insertion slot. Two locking blocks are slidably disposed within the connector, and a third spring is provided between the two locking blocks. The upper end of the opposite side of the two locking blocks has a latch that passes through the side of the connector, and the lower end has a button that passes through the side of the extended handle. When the connector is inserted into the insertion slot, the latch engages with the latch under the action of the third spring. Pressing the two buttons inward disengages the latch from the latch. Using two locking blocks for engagement improves the reliability of the connection between the extended handle and the handle housing and prevents accidental detachment of the extended handle.

[0014] The beneficial effects of this utility model are as follows: A limiting mechanism consisting of a sliding block and a driving block is used to limit the angle of the gun head. When the driving block is pressed, the limiting part of the sliding block disengages from the groove, thereby reducing the rotational resistance of the gun head and improving the smoothness of adjusting the gun head angle. After the driving block is released, the driving block, under the action of a spring, pushes the limiting part of the sliding block into the groove and limits the position of the sliding block, achieving self-locking between the gun head and the handle, ensuring the stability of the gun head angle. Furthermore, the entire limiting mechanism is integrated into a small space, requiring only appropriate modifications to the existing fascia gun housing, replacing the existing positioning elastic element with the limiting mechanism, thus reducing the cost of product upgrades and modifications. Attached Figure Description

[0015] Figure 1This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the gun head of this utility model; Figure 3 This is a schematic diagram of the structure of the gun head of this utility model being perpendicular to the handle; Figure 4 This is a schematic diagram of the structure of the gun head of this utility model being parallel to the handle; Figure 5 This is a schematic diagram of the limiting mechanism of this utility model in the locked state; Figure 6 This is a schematic diagram of the limiting mechanism of this utility model in the released state; Figure 7 yes Figure 1 Enlarged view of section A; Figure 8 This is a schematic diagram of the structure of the cover plate of this utility model; Figure 9 This is a schematic diagram of the structure of this utility model equipped with an extended handle; Figure 10 This is a cross-sectional view of the connection between the handle and the extended handle of this utility model.

[0016] The markings in the diagram are as follows: 1-gun head, 2-handle, 3-drive block, 4-sliding block, 5-rib bracket, 6-first spring, 7-second spring, 8-cover plate, 9-extended handle, 11-groove, 12-spherical shell, 13-front nozzle, 14-rotating shaft, 21-spherical shell, 22-clamping ring, 23-silicone ring, 24-opening, 25-through hole, 26-insertion groove, 27-bayonet, 31-second guide section, 32-receiving cavity, 33-limiting ring, 34-second guide strip 35-Second limiting surface, 36-Second inclined surface, 37-Third limiting surface, 41-Limiting part, 42-First guide part, 43-Relief groove, 44-First guide strip, 45-Limiting plate, 46-First limiting surface, 47-First inclined surface, 51-First sliding groove, 52-Second sliding groove, 53-Positioning rib, 81-First guide groove, 82-Second guide groove, 83-Limiting groove, 91-Plug, 92-Clocking block, 93-Third spring, 94-Clocking tongue, 95-Button. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] It should be noted that if this utility model contains directional indicators such as up, down, left, right, front, and back, these are used to describe the relative positional relationships between components and are not specific references to the absolute positions of related components or the positional relationships between components. They are only used to explain the relative positional relationships and movement of components in a specific posture. If the specific posture changes, the directional indicator will also change accordingly. If this utility model contains terms related to quantity, such as "many," "multiple," or "several," these specifically refer to two or more.

[0019] like Figure 1 , Figure 5 and Figure 6 As shown, the fascia gun provided by this utility model includes a gun head 1 and a handle 2. The rear end of the housing of the gun head 1 is rotatably connected to the front end of the housing of the handle 2. With the axis of rotation of the two as the central axis, a plurality of grooves 11 are arranged in a circular array at the rear end of the housing of the gun head 1. The front end of the housing of the handle 2 is provided with a limiting mechanism that can engage with the grooves 11. The limiting mechanism includes a driving block 3 and a sliding block 4, both of which are slidably disposed on a fascia support 5 inside the housing of the handle 2. A first spring 6 and a second spring 7 are respectively provided between the sliding block 4 and the fascia support 5. The front end of the sliding block 4 is provided with a limiting part 41 that can be inserted into the groove 11, and the rear end is provided with a first guide part 42. The side of the driving block 3 is provided with a second guide part 31 that cooperates with the first guide part 42. The fascia support 5 refers to a support structure composed of multiple reinforcing ribs disposed inside the housing of the handle 2, which is integrally injection molded with the housing of the handle 2 and is used to install the limiting mechanism. The cooperation between the second guide portion 31 of the drive block 3 and the first guide portion 42 of the sliding block 4 is unidirectional, that is, the drive block 3 can drive the sliding block 4 to move, but the sliding block 4 cannot drive the drive block 3 to move in the opposite direction.

[0020] The first guide part 42 and the second guide part 31 have two engagement states. In the first state, when the first spring 6 and the second spring 7 are in their natural state, the driving block 3 causes the limiting part 41 at the front end of the sliding block 4 to insert into the groove 11, and the driving block 3 prevents the sliding block 4 from moving backward, thus ensuring that the sliding block 4 can lock the gun head 1, preventing the gun head 1 from rotating relative to the handle 2. When the driving block 3 is pressed to compress the second spring 7, the sliding block 4 moves backward under the action of the first spring 6, causing the limiting part 41 to exit the groove 11. This is the second state, in which the angle between the gun head 1 and the handle 2 can be changed by rotating the gun head 1. After releasing the driving block 3, the driving block 3 and the sliding block 4 return to the first engagement state under the action of the first spring 6 and the second spring 7. Therefore, when it is necessary to adjust the angle of the gun head 1, first press the drive block 3 to make the limiting part 41 exit the groove 11, and then the gun head 1 can be rotated smoothly. After the angle is adjusted to the correct position, release the drive block 3 and rotate the gun head 1 appropriately so that the limiting part 41 can be inserted into the nearest groove 11. This is convenient and quick, which can reduce the adjustment resistance and ensure that the angle locking state is stable and reliable.

[0021] Regarding the rotating connection between the gun head 1 and the handle 2, the solution adopted by this utility model is as follows: Figure 1 , Figure 2 As shown, the gun head 1's housing includes a spherical shell 12 and a front nozzle 13 located on the front of the spherical shell 12. A rotating shaft 14 is provided on each side of the spherical shell 12. The groove 11 is located on the back of the spherical shell 12. The front end of the handle 2's housing has a spherical outer shell 21 that matches the spherical shell 12. The spherical outer shell 21 has retaining rings 22 on both sides that are rotatably connected to the rotating shafts 14. An annular groove is provided on the outer side of the retaining rings 22, and a silicone ring 23 is pressed between the spherical shell 12 and the spherical outer shell 21 within the annular groove. The motor of the rib-shaped massage gun is located inside the spherical shell 12, the piston rod is located inside the front nozzle 13, and the battery and other electrical components are located inside the handle 2. Therefore, when the gun head 1 rotates, the positions of the motor and drive mechanism are relatively fixed, and different angles of the gun head 1 do not affect its ability to drive the massage head to perform percussion massage. The function of the silicone ring 23 is twofold: firstly, it can ensure a tight connection between the spherical face shell 12 and the spherical outer shell 21, thereby providing rotational damping and improving the user's experience when rotating the gun head 1; secondly, it can reduce the vibration transmitted from the gun head 1 to the handle 2, thus reducing noise.

[0022] To accommodate various massage needs, this invention sets the adjustable range of the massage gun to 0~90°, such as... Figure 3 , Figure 4As shown, the angle between the axis of the gun head 1 and the axis of the handle 2 is 0° when they are parallel, and 90° when they are perpendicular. Therefore, to allow the gun head 1 to rotate while limiting its rotation range, openings 24 for the front nozzle 13 to move are provided on the front and top of the spherical shell 21. The length of the openings 24 is adjustable so that the angle between the axis of the front nozzle 13 and the axis of the handle 2 is within the range of 0 to 90°. At the same time, the positions of the two outermost grooves 11 on the spherical shell 12 correspond to the positions when the axis of the front nozzle 13 and the axis of the handle 2 are at 0° and 90° respectively. The central angle between the two adjacent grooves 11 in the middle can be set to 10 to 30° so that the limiting mechanism can lock and fix the gun head 1 at multiple angles to meet different usage requirements.

[0023] Regarding the sliding connection between the driving block 3 and the sliding block 4 and the rib frame 5 in the limiting mechanism, the preferred solution adopted by this utility model is: like Figure 5 , Figure 6 As shown, the rib bracket 5 is provided with a first sliding groove 51, and a positioning rib 53 is provided in the middle of the first sliding groove 51. The sliding block 4 is slidably disposed in the first sliding groove 51, and a clearance groove 43 is provided in the middle to avoid the positioning rib 53. The first spring 6 is disposed between one end of the positioning rib 53 and the clearance groove 43. The first spring 6 can be of two forms: one is a compression spring, which is disposed between the end of the positioning rib 53 and the end of the clearance groove 43 away from the limiting part 41. Under the pushing force of the first spring 6, the end of the clearance groove 43 near the limiting part 41 abuts against the positioning rib 53, at which time the sliding block 4 is in the rearmost position; the other form is a tension spring, which is disposed between the end of the positioning rib 53 and the end of the clearance groove 43 near the limiting part 41. Under the tension of the first spring 6 and the limitation of its own length, the sliding block 4 is in the rearmost position, as shown. Figure 6 As shown. Both forms ensure that after the pushing action of the drive block 3 is lost, the sliding block 4 can move backward, causing the limiting part 41 to exit the groove 11.

[0024] like Figure 5 , Figure 6As shown, the rib frame 5 is also provided with a second sliding groove 52. The driving block 3 is slidably disposed in the second sliding groove 52. The inner end of the driving block 3 is provided with a receiving cavity 32. The second spring 7 is disposed between the bottom of the receiving cavity 32 and the inner end of the second sliding groove 52. In its natural state, the outer end of the driving block 3 passes through the through hole 25 on the handle 2 housing under the pushing force of the second spring 7 and abuts against the inner periphery of the through hole 25 through the limiting ring 33 thereon, thereby limiting the outward movement of the driving block 3. When the outer end of the driving block 3 is pressed inward, its maximum inward movement position is the position when the inner end of the driving block 3 contacts the inner end of the second sliding groove 52. The two extreme positions of the driving block 3 moving outward and inward correspond to the extreme positions of the sliding block 4 moving forward and backward, that is, the positions where the limiting part 41 is fully inserted into the groove 11 and fully withdrawn from the groove 11.

[0025] To facilitate the installation of the drive block 3 and sliding block 4 onto the rib bracket 5, the rib bracket 5 can be mounted on one half of the handle 2 housing. The side of the first slide groove 51 and the second slide groove 52 away from this half-shell is an open structure, allowing the drive block 3 and sliding block 4 to be installed into the second slide groove 52 and the first slide groove 51. To prevent the drive block 3 and sliding block 4 from detaching from the slide groove, this invention also provides a cover plate 8. The cover plate 8 can be mounted on the rib bracket 5 with screws or the like, confining the sliding block 4 and drive block 3 within the first slide groove 51 and the second slide groove 52. Furthermore, to ensure that the mating structure between the first guide part 42 and the second guide part 31 remains unchanged, the cross-sections of the first slide groove 51 and the second slide groove 52 can be square, and the corresponding cross-sections of the drive block 3 and the sliding block 4 are also square, thereby preventing the drive block 3 and the sliding block 4 from rotating and affecting their mating relationship.

[0026] like Figure 7 , Figure 8 As shown, to further improve the smoothness of sliding of the sliding block 4 and the driving block 3, a first guide strip 44 and a second guide strip 34 extending along their sliding direction are respectively provided on the side of the sliding block 4 and the driving block 3 facing the cover plate 8. The cover plate 8 is provided with a first guide groove 81 and a second guide groove 82 that match the first guide strip 44 and the second guide strip 34. A limiting plate 45 is also provided at the front end of the sliding block 4. The cover plate 8 is provided with a limiting groove 83 that slides with the limiting plate 45. When the sliding block 4 moves to the rear end, the limiting plate 45 contacts the bottom of the limiting groove 83. The first guide groove 81, the second guide groove 82, and the limiting groove 83 can improve the accuracy of sliding of the sliding block 4 and the driving block 3. During assembly, grease can also be applied to the first guide groove 81 and the second guide groove 82 to further improve the smoothness of sliding of the sliding block 4 and the driving block 3 and avoid jamming that could affect the adjustment and locking of the gun head 1.

[0027] Regarding the cooperation between the first guide part 42 and the second guide part 31, considering the arrangement of the limiting mechanism in the rib-forming gun, the preferred solution adopted by this utility model is as follows: Figure 5 , Figure 6 As shown, the bottom of the first guide portion 42 is provided with a first limiting surface 46, and the front of the first limiting surface 46 is provided with a first inclined surface 47. The driving block 3 is located below the sliding block 4. The second guide portion 31 includes a second limiting surface 35, a second inclined surface 36 and a third limiting surface 37 connected sequentially from back to front, and the position of the third limiting surface 37 is higher than that of the second limiting surface 35. In its natural state, the third limiting surface 37 abuts against the lower part of the first limiting surface 46, placing the sliding block 4 at its foremost position, and preventing it from moving backward. When the drive block 3 is pressed forward, the sliding block 4 moves backward along the second inclined surface 36 under the action of the first spring 6 until both reach their limit positions. At this point, the first limiting surface 46 contacts the second limiting surface 35, the first inclined surface 47 contacts the second inclined surface 36, and the limiting part 41 completely exits the groove 11. When the drive block 3 is released, it moves backward under the action of the second spring 7 and, with the cooperation of the first inclined surface 47 and the second inclined surface 36, drives the sliding block 4 forward until it returns to its natural state. The angle between the first inclined surface 47 and the second inclined surface 36 must satisfy the requirement that the force exerted by the second inclined surface 36 on the first inclined surface 47 has a component that causes the sliding block 4 to move forward, and the elastic force of the second spring 7 must be greater than the elastic force of the first spring 6. This ensures that when the drive block 3 resets under the action of the second spring 7, it can drive the sliding block 4 to reset.

[0028] In addition, such as Figure 9 As shown, to increase the massage range of the fascia gun, this invention also provides an extended handle 9, which is detachably mounted on the rear end of the handle 2 housing. Individuals can hold the extended handle 9 and adjust the angle of the gun head 1 to massage their back. Because massaging with the extended handle 9 increases the torque on the gun head 1, traditional spring-ball mechanisms can easily cause changes in the angle of the gun head 1. However, the limiting mechanism of this invention ensures the stability of the gun head 1's locking, thereby increasing the compatibility between the fascia gun and the extended handle 9.

[0029] The specific installation method of the housing of handle 2 and the extended handle 9 can be a threaded connection or a snap-fit ​​connection, etc. The solution adopted in this utility model is as follows: Figure 10As shown, the rear end of the handle 2 housing is provided with a insertion groove 26, and each of the opposite sides of the inner wall of the insertion groove 26 is provided with a latch 27. The front end of the extended handle 9 is provided with a connector 91 that can be inserted into the insertion groove 26. Two latches 92 are slidably disposed in the connector 91, and a third spring 93 is provided between the two latches 92. The upper end of the opposite side of the two latches 92 is provided with a latch tongue 94 that passes through the side of the connector 91, and the lower end is provided with a button 95 that passes through the side of the extended handle 9. When the connector 91 is inserted into the insertion groove 26, the latch tongue 94 is engaged with the latch 27 under the action of the third spring 93. Pressing the two buttons 95 inward can disengage the latch tongue 94 from the latch 27. The insertion groove 26 and the connector 91 are preferably non-cylindrical to avoid relative rotation between them. Using two latches 92 for engagement can improve the reliability of the connection and prevent accidental contact that could cause the extended handle 9 to fall off.

Claims

1. A fascia gun, comprising a gun head (1) and a handle (2), wherein the rear end of the housing of the gun head (1) is rotatably connected to the front end of the housing of the handle (2), and a plurality of grooves (11) are arranged in a circular array at the rear end of the housing of the gun head (1) with the axis of rotation of the two as the central axis, and a limiting mechanism that can engage with the grooves (11) is provided in the front end of the housing of the handle (2), characterized in that: The limiting mechanism includes a driving block (3) and a sliding block (4), both of which are slidably mounted on the rib frame (5) inside the handle (2) housing. A first spring (6) and a second spring (7) are respectively provided between the sliding block (4) and the rib frame (5). The front end of the sliding block (4) is provided with a limiting part (41) that can be inserted into the groove (11), and the rear end is provided with a first guide part (42). The side of the driving block (3) is provided with a second guide part (31) that cooperates with the first guide part (42). When the first spring (6) and the second spring (7) are in their natural state, the driving block (3) causes the limiting part (41) at the front end of the sliding block (4) to be inserted into the groove (11). When the driving block (3) is pressed to compress the second spring (7), the sliding block (4) moves backward under the action of the first spring (6), causing the limiting part (41) to exit the groove (11). After the driving block (3) is released, it and the sliding block (4) return to their natural state under the action of the first spring (6) and the second spring (7).

2. The fascia gun as described in claim 1, characterized in that: The gun head (1) housing includes a spherical face shell (12) and a front nozzle (13) located on the front of the spherical face shell (12). A rotating shaft (14) is provided on each side of the spherical face shell (12). The groove (11) is provided on the back of the spherical face shell (12). The front end of the handle (2) housing is provided with a spherical outer shell (21) that matches the spherical face shell (12). The two sides of the spherical outer shell (21) are provided with retaining rings (22) that are rotatably connected to the rotating shafts (14). An annular groove is provided on the outer side of the retaining ring (22). A silicone ring (23) is provided in the annular groove and is pressed between the spherical face shell (12) and the spherical outer shell (21).

3. The fascia gun as described in claim 2, characterized in that: The spherical shell (21) has openings (24) on the front and top for the front mouth (13) to move. The length of the opening (24) is adjustable within the range of 0 to 90° between the axis of the front mouth (13) and the axis of the handle (2). The positions of the two outermost grooves (11) on the spherical shell (12) correspond to the positions when the axis of the front mouth (13) and the axis of the handle (2) are at 0° and 90° respectively. The central angles of the two adjacent grooves (11) in the middle are 10 to 30°.

4. The fascia gun as described in claim 1, characterized in that: The rib frame (5) is provided with a first sliding groove (51), and a positioning rib (53) is provided in the middle of the first sliding groove (51). The sliding block (4) is slidably disposed in the first sliding groove (51), and a clearance groove (43) is provided in the middle to avoid the positioning rib (53). The first spring (6) is disposed between one end of the positioning rib (53) and the clearance groove (43).

5. The fascia gun as described in claim 4, characterized in that: The rib frame (5) is also provided with a second slide groove (52). The drive block (3) is slidably disposed in the second slide groove (52). The inner end of the drive block (3) is provided with a receiving cavity (32). The second spring (7) is disposed between the bottom of the receiving cavity (32) and the inner end of the second slide groove (52). The outer end of the drive block (3) passes through the through hole (25) on the handle (2) housing under the action of the second spring (7) and abuts against the inner periphery of the through hole (25) through the limiting ring (33) on it.

6. The fascia gun as described in claim 5, characterized in that: It also includes a cover plate (8), the rib bracket (5) is set on one half shell of the handle (2) housing, the first slide groove (51) and the second slide groove (52) are open on the side away from the half shell, the cover plate (8) is set on the rib bracket (5) to restrict the sliding block (4) and the driving block (3) within the first slide groove (51) and the second slide groove (52).

7. The fascia gun as described in claim 6, characterized in that: The sliding block (4) and the driving block (3) are respectively provided with a first guide strip (44) and a second guide strip (34) extending along their sliding direction on the side facing the cover plate (8). The cover plate (8) is provided with a first guide groove (81) and a second guide groove (82) that match the first guide strip (44) and the second guide strip (34). The front end of the sliding block (4) is also provided with a limiting plate (45). The cover plate (8) is provided with a limiting groove (83) that slides with the limiting plate (45). When the sliding block (4) moves to the last end, the limiting plate (45) contacts the bottom of the limiting groove (83).

8. The fascia gun as described in any one of claims 1-7, characterized in that: The first guide portion (42) has a first limiting surface (46) at its bottom and a first inclined surface (47) in front of the first limiting surface (46). The driving block (3) is located below the sliding block (4). The second guide portion (31) includes a second limiting surface (35), a second inclined surface (36), and a third limiting surface (37) connected sequentially from back to front. The third limiting surface (37) is positioned higher than the second limiting surface (35). In its natural state, the third limiting surface (37) abuts against the lower part of the first limiting surface (46), causing the sliding block to move forward. When block (4) is in the foremost position, when the drive block (3) is pressed forward, the sliding block (4) moves backward under the action of the first spring (6) until both reach their limit positions. At this time, the first limiting surface (46) contacts the second limiting surface (35), and the first inclined surface (47) contacts the second inclined surface (36). When the drive block (3) is released, the drive block (3) moves backward under the action of the second spring (7) and drives the sliding block (4) forward under the cooperation of the first inclined surface (47) and the second inclined surface (36) until it returns to its natural state.

9. The fascia gun as described in claim 8, characterized in that: It also includes an extended handle (9), which is detachably mounted at the rear end of the handle (2) housing.

10. The fascia gun as described in claim 9, characterized in that: The rear end of the handle (2) housing is provided with a plug groove (26), and each of the opposite sides of the inner wall of the plug groove (26) is provided with a latch (27). The front end of the extended handle (9) is provided with a plug (91) that can be inserted into the plug groove (26). Two latches (92) are slidably arranged in the plug (91). A third spring (93) is provided between the two latches (92). The upper end of the opposite side of the two latches (92) is provided with a latch tongue (94) that passes through the side of the plug (91), and the lower end is provided with a button (95) that passes through the side of the extended handle (9). When the plug (91) is inserted into the plug groove (26), the latch tongue (94) engages with the latch (27) under the action of the third spring (93). Pressing the two buttons (95) inward can disengage the latch tongue (94) from the latch (27).

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