Fascia gun reciprocating stroke structure

Abstract

The utility model discloses a kind of fascia gun reciprocating stroke structures, belong to fascia gun technical field, comprising: lower shell and upper shell, the lower shell bottom side is communicated with grip cylinder, the upper side of grip cylinder is equipped with the bracket fixedly installed with lower shell inner wall, the bottom of the bracket is equipped with driving motor, the output end of driving motor is connected with carousel, the top of carousel is equipped with sliding seat by adjusting assembly. By setting adjusting assembly consisting of adjusting groove, screw rod, runner, guide rod, runner rotates can drive screw rod, drive sliding seat to slide along adjusting groove, change the distance of sliding seat and carousel center, i.

Description

Technical Field

[0001] This utility model relates to a reciprocating stroke structure for a fascia gun, belonging to the field of fascia gun technology. Background Technology

[0002] With the increasing health awareness of the general public, the demand for muscle relaxation among fitness enthusiasts and office workers has surged. Fascia guns, as portable high-frequency vibration massage tools, have become an important category of consumer-grade health devices due to their core value of deep myofascial impact, and are widely used in scenarios such as post-exercise recovery, office fatigue relief, and muscle care for the elderly. Their core working principle involves an internal high-speed drive motor that converts mechanical energy into high-frequency reciprocating vibrations, which are then transmitted through the gun head to the surface of the muscle and the deep fascia. This breaks down fascial adhesions, promotes local blood circulation, relieves muscle spasms, and achieves a passive relaxation effect.

[0003] The reciprocating drive structure of current mainstream fascia guns mainly relies on two schemes: eccentric wheel transmission or crank-slider transmission. The former uses a motor to drive the eccentric wheel to rotate, and the radial displacement generated by the eccentricity drives the gun head to reciprocate; the latter uses the hinged connection between the crank and the slider to convert the rotational motion of the motor into the linear reciprocating motion of the slider. Although both structures can achieve basic vibration function, they have significant technical defects and application pain points, specifically:

[0004] 1. There are significant differences in muscle thickness and fascia distribution in the human body: different users also have different needs. Existing fixed-stroke structures, if designed for deep fascia needs, are prone to causing stinging sensations when used on superficial muscles; if designed for superficial needs, they cannot effectively reach deep fascia, resulting in a dilemma of insufficient massage effect or poor user experience;

[0005] 2. Human muscles are distributed in different parts of the body, such as the neck, shoulders, back, and legs, and their surface curves vary significantly. The heads of existing fascia guns can only move back and forth along a single axis and cannot rotate, which cannot adapt to the complex muscle structure of the human body and the diverse needs of use, resulting in limited relaxation effects. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a reciprocating stroke structure for a fascia gun.

[0007] The technical solution adopted by this utility model to solve its technical problem is:

[0008] A fascia gun reciprocating stroke structure includes: a lower housing and an upper housing. A grip cylinder is connected to one side of the bottom of the lower housing. A bracket is fixedly installed above the grip cylinder and attached to the inner wall of the lower housing. A drive motor is installed at the bottom of the bracket. A turntable is connected to the output end of the drive motor. A slide block is provided on the top of the turntable via an adjustment component. A slide cylinder is slidably installed between one side of the lower housing and the upper housing. A rotating shaft is rotatably installed on the top of the slide cylinder near the slide block and on the top of the slide block via bearings. The two rotating shafts are detachably installed via a disassembly component and a connecting plate. A connector is rotatably installed on one side of the slide cylinder via a rotating component. A gun head is provided on one side of the connector.

[0009] Preferably, the adjustment assembly includes an adjustment groove, which is located on the top side of the turntable. A lead screw is rotatably installed in the adjustment groove, and the outer side wall of the lead screw is slidably connected to a slide block via a thread. A rotating groove is provided on the top of the turntable, and one side of the lead screw passes through the rotating groove and is fitted with a rotating wheel.

[0010] Preferably, a guide rod is installed in the adjusting groove, and the slide block and the guide rod are slidably connected.

[0011] Preferably, the disassembly assembly includes two slots that are inserted into the rotating shaft. The two slots are respectively opened on the bottom sides of the connecting plate. Both sides of the connecting plate are provided with long grooves that communicate with the slots. A long rod is slidably installed in the long groove. One side of the long rod is connected to the inner wall of the long groove away from the slot by a spring. One side of the rotating shaft is provided with a insertion hole that is inserted into the other side of the slot.

[0012] Preferably, a sliding groove communicating with the long groove is provided between the two ends of the connecting plate, and a sliding plate fixedly installed with the long rod is slidably installed in the sliding groove.

[0013] Preferably, the rotating assembly includes a connecting frame, which is installed on the inner wall of the slide cylinder. A rotating motor is installed on one side of the connecting frame. The connector and the slide cylinder are rotatably mounted via bearings, and one side of the connector is connected to the output end of the rotating motor.

[0014] Preferably, a plurality of rotating rods are installed on one side of the outer wall of the connector, and a limiting groove is provided on the inner wall of the slide cylinder to be rotatably connected to the rotating rods.

[0015] Preferably, the top of the upper housing has an inspection port on one side of the turntable, and a sealing cover is detachably installed on the inspection port.

[0016] Preferably, the inner wall of the inspection port is provided with internal threads, and the bottom outer wall of the sealing cover is provided with external threads.

[0017] Preferably, slide rods are installed at both ends of one side of the slide cylinder, and connecting grooves that slide and connect with the slide rods are provided on both inner walls of the lower housing.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] 1. By setting up an adjustment assembly consisting of an adjustment groove, lead screw, rotating wheel, and guide rod, rotating the rotating wheel drives the lead screw to rotate, causing the slide to slide along the adjustment groove. Changing the distance between the slide and the center of the turntable changes the transmission radius. Combined with the hinged transmission relationship between the turntable, connecting plate, and slide, the change in transmission radius directly translates into a change in the reciprocating stroke of the slide. For deep fascia such as the leg muscles of athletes and the erector spinae muscles of the back, the stroke can be increased to ensure that the vibration energy is effectively transmitted to the deep tissues and break fascial adhesions. For superficial muscles such as the trapezius muscles of the neck and the masseter muscles of the face, the stroke can be reduced to avoid the stinging sensation caused by high-frequency impact. It adapts to the needs of different groups of people, achieving multi-purpose application coverage and solving the problem of single-adaptability of existing fixed stroke structures.

[0020] 2. The rotating assembly, consisting of a connecting frame, a rotating motor, a rotating rod, and a limiting groove, allows the motor to drive the connector and the gun head to rotate around the axis of the slide cylinder. Simultaneously, the rotating rod slides along the limiting groove, restricting the radial displacement of the connector. Combined with the reciprocating extension and retraction of the slide cylinder, a composite massage action of reciprocating impact and circular rotation is achieved. When massaging cylindrical areas such as the neck and arms, the gun head rotation automatically adapts to the curved surface, preventing slippage and ensuring continuous coverage of the massage area. When massaging curved areas such as the back and waist, the rotational motion transmits vibration along the muscle texture, improving the uniformity of fascia relaxation. This composite action simulates the massage technique of manual kneading and impact, avoiding muscle discomfort caused by single reciprocating vibration and enhancing the user experience.

[0021] 3. The disassembly assembly, consisting of slots, long grooves, long rods, springs, and sliding plates, enables rapid separation and installation of the connecting plate and the rotating shaft, solving the maintenance difficulties of traditional transmission structures. Disassembly and assembly are convenient: During disassembly, the user only needs to press the sliding plates at both ends of the connecting plate with both hands, causing the long rod to compress the spring and disengage from the rotating shaft's insertion hole, then pull the connecting plate upwards to complete the separation. During installation, after pressing the sliding plate, align the slot of the connecting plate with the rotating shaft and insert it. Releasing the sliding plate allows the spring to return to its original position, pushing the long rod into the insertion hole to complete the fixation. The entire process requires no tools, superior to traditional bolt connections. After disassembly, dust and oil stains on components such as the slide and rotating shaft can be easily cleaned, preventing transmission jams caused by impurities and extending the overall lifespan of the equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0024] Figure 2 This is a schematic diagram of the slide tube structure of this utility model;

[0025] Figure 3 For the present utility model Figure 2 Enlarged structural diagram of point A;

[0026] Figure 4 This is a schematic diagram of the disassembly component structure of this utility model;

[0027] Figure 5 This is a schematic diagram of the disassembly component structure of this utility model;

[0028] Figure 6 This is a schematic diagram of the rotating component structure of this utility model.

[0029] In the diagram: 1. Lower housing; 2. Upper housing; 3. Grip; 4. Bracket; 5. Drive motor; 6. Turntable; 7. Adjustment assembly; 8. Slide; 9. Slide cylinder; 10. Rotating shaft; 11. Disassembly assembly; 12. Connecting plate; 13. Rotating assembly; 14. Connector; 15. Gun head; 16. Inspection port; 17. Sealing cover; 18. Slide rod; 19. Connecting groove; 701. Adjustment groove; 702. Lead screw; 703. Rotating groove; 704. Rotating wheel; 111. Slot; 112. Long groove; 113. Long rod; 114. Spring; 115. Insertion hole; 116. Slide groove; 117. Slide plate; 131. Connecting frame; 132. Rotating motor; 133. Rotating rod; 134. Limiting groove. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-2 This utility model provides a technical solution:

[0032] A fascia gun reciprocating stroke structure includes: a lower housing 1 and an upper housing 2. A grip cylinder 3 is connected to one side of the bottom of the lower housing 1. A bracket 4 is fixedly installed above the grip cylinder 3 and attached to the inner wall of the lower housing 1. A drive motor 5 is installed at the bottom of the bracket 4. A turntable 6 is connected to the output end of the drive motor 5. A slide block 8 is provided on the top of the turntable 6 through an adjustment component 7. A slide cylinder 9 is slidably installed between one side of the lower housing 1 and the upper housing 2. A rotating shaft 10 is rotatably installed on the top of the slide cylinder 9 near the slide block 8 and on the top of the slide block 8 through bearings. The two rotating shafts 10 can be detached and installed through a disassembly component 11 and a connecting plate 12. A connector 14 is rotatably installed on one side of the slide cylinder 9 through a rotating component 13. A gun head 15 is provided on one side of the connector 14.

[0033] Furthermore, the lower housing 1 and the upper housing 2 are made of high-strength engineering plastics and are detachably connected by 4-6 Phillips head screws, facilitating the assembly, maintenance, and replacement of internal components. The grip 3 and the lower housing 1 are integrally injection molded structures. The outer wall of the grip 3 has annular anti-slip textures to increase friction when the user holds the device and prevent it from slipping during massage. The grip 3 has a battery mounting cavity and a power cord hole inside, which can accommodate a rechargeable lithium battery to meet the wireless and portable use requirements of the fascia gun. At the same time, the inner wall of the cord hole is equipped with a rubber sealing ring to prevent dust and water.

[0034] Please see Figure 3 In this embodiment: the adjustment assembly 7 includes an adjustment groove 701, which is opened on the top side of the turntable 6. A lead screw 702 is rotatably installed in the adjustment groove 701. The outer side wall of the lead screw 702 is slidably connected to the slide block 8 by a thread. A rotating groove 703 is opened on the top of the turntable 6. One side of the lead screw 702 passes through the rotating groove 703 and is equipped with a rotating wheel 704.

[0035] Furthermore, the outer wall of the rotating wheel 704 is provided with anti-slip texture. The texture is evenly distributed in a ring shape to increase the friction between the hand and the rotating wheel 704, so that the user can stably rotate the rotating wheel 704 to adjust the stroke even when the hand is sweaty or slippery.

[0036] Please see Figure 3 In this embodiment: a guide rod is installed in the adjusting groove 701, and the slide block 8 is slidably connected to the guide rod.

[0037] Furthermore, the guide rod is fixed to the inner walls of both ends of the adjusting groove 701 with an interference fit to ensure that the guide rod will not loosen or shift during equipment operation. The guide rod is made of 304 stainless steel and the surface is polished, which greatly reduces the sliding friction between the slide block 8 and the guide rod, reduces component wear, and extends service life. In addition, there are two guide rods, symmetrically distributed on both sides of the lead screw 702, which further enhances the limiting effect on the slide block 8, prevents the slide block 8 from tilting during movement, and ensures that the slide block 8 always moves in a straight line along the adjusting groove 701.

[0038] Please see Figure 4-5 In this embodiment: the disassembly assembly 11 includes two slots 111 that are inserted into the rotating shaft 10. The two slots 111 are respectively opened on the bottom sides of the connecting plate 12. Both sides of the connecting plate 12 are provided with long grooves 112 that communicate with the slots 111. A long rod 113 is slidably installed in the long groove 112. One side of the long rod 113 is connected to the inner wall of the side of the long groove 112 away from the slot 111 by a spring 114. One side of the rotating shaft 10 is provided with a socket 115 that is inserted into the other side of the slot 111.

[0039] Furthermore, the spring 114 is a cylindrical helical compression spring with an initial compression of 1 / 3 of its free length. This ensures that the spring 114 can provide a stable thrust to the long rod 113, so that the long rod 113 always tends to insert into the insertion hole 115, preventing the long rod 113 from dislodging from the insertion hole 115 due to vibration during fascia gun operation. The end of the long rod 113 near the insertion hole 115 is a hemispherical structure with a radius that matches the radius of the insertion hole 115. When installing the connecting plate 12, the hemispherical end can act as a guide, reducing the collision and wear between the long rod 113 and the rotating shaft, while also allowing the long rod 113 to be inserted into the insertion hole 115 more smoothly. The inner wall of the long groove 112 is smoothed to reduce the resistance when the long rod 113 slides, ensuring that the disassembly and assembly operations are easier.

[0040] Please see Figure 4-5 In this embodiment: a sliding groove 116 communicating with the long groove 112 is provided between the two ends of the connecting plate 12, and a sliding plate 117 fixedly installed with the long rod 113 is slidably installed in the sliding groove 116.

[0041] Furthermore, the length of the slide 116 is matched with the travel of the long rod 113, ensuring that the slide plate 117 can drive the long rod 113 to completely disengage from or insert into the socket 115 when sliding.

[0042] Please see Figure 6 In this embodiment: the rotating assembly 13 includes a connecting frame 131, which is installed on the inner wall of the slide cylinder 9. A rotating motor 132 is installed on one side of the connecting frame 131. The connector 14 and the slide cylinder 9 are rotatably mounted through a bearing, and one side of the connector 14 is connected to the output end of the rotating motor 132.

[0043] Furthermore, the rotating motor 132 is a DC geared motor with adjustable speed, which can adjust the rotation speed of the gun head 15 according to different massage needs, and adapt to different massage scenarios such as the neck, shoulders, and back; the connector 14 is connected to the output end of the rotating motor 132 by a key, and the key is made of 45 steel to ensure stable power transmission, avoid slippage, and facilitate disassembly and maintenance later.

[0044] Please see Figure 6 In this embodiment: a plurality of rotating rods 133 are installed on one side of the outer wall of the connector 14, and a limiting groove 134 is provided on the inner wall of the slide cylinder 9 to be rotatably connected to the rotating rods 133.

[0045] Furthermore, there are 3-4 rotating rods 133, evenly distributed along the circumference of the connector 14, to ensure that the connector 14 is subjected to balanced force when rotating, and to avoid tilting of the connector 14 due to force on one side. The length of the rotating rod 133 is adapted to the depth of the limiting groove 134, and the end of the rotating rod 133 is embedded in the limiting groove 134 with a gap of 0.1-0.2mm. This ensures that the rotating rod 133 can rotate smoothly in the limiting groove 134, and also effectively limits the radial displacement of the connector 14, preventing the connector 14 from shaking during reciprocating motion and rotation. The rotating rod 133 and the limiting groove 134 are both made of wear-resistant engineering plastic, which reduces friction and wear between parts, and also reduces noise during operation, making the equipment run more quietly.

[0046] Please see Figure 1 In this embodiment: the top of the upper housing 2 is provided with an inspection port 16 on one side of the turntable 6, and a sealing cover 17 is detachably installed on the inspection port 16.

[0047] Furthermore, the access port 16 is circular in shape, ensuring that staff can easily insert their fingers to slide the rotary wheel 704 without disassembling the upper housing 2; the sealing cover 17 seals the access port 16, serving as a dustproof function.

[0048] Please see Figure 1 In this embodiment: the inner wall of the inspection port 16 is provided with internal threads, and the bottom outer wall of the sealing cover 17 is provided with external threads.

[0049] Furthermore, both the internal and external threads are fine-pitch threads, which have better self-locking properties and can effectively prevent the sealing cover 17 from loosening due to vibration during the operation of the fascia gun. At the same time, the contact area of ​​the fine-pitch threads is larger, resulting in a better sealing effect and reducing the entry of dust, moisture and other impurities into the equipment, thus protecting the internal circuits and mechanical components. The bottom of the sealing cover 17 is equipped with an annular rubber sealing ring made of nitrile rubber, which has good elasticity and oil resistance. When the sealing cover 17 is tightened, the sealing ring is compressed, further enhancing the sealing performance of the inspection port 16.

[0050] Please see Figure 1-2 In this embodiment: slide rods 18 are installed at both ends of one side of the slide cylinder 9, and connecting grooves 19 that are slidably connected to the slide rods 18 are opened on both sides of the inner wall of the lower housing 1.

[0051] Furthermore, the slide rod 18 has a cylindrical structure, is made of 45# steel, and has a chrome-plated surface, which improves the wear resistance and corrosion resistance of the slide rod 18 and reduces the sliding friction between the slide rod 18 and the connecting groove 19. The inner wall of the connecting groove 19 is provided with a graphite lubrication layer, which has a good lubrication effect and can keep the slide rod 18 sliding smoothly for a long time, reducing the maintenance frequency. In addition, the slide rod 18 and the slide cylinder 9 are connected by threads, and the end of the slide rod 18 is provided with an anti-loosening nut to prevent the slide rod 18 from loosening or falling off during equipment operation.

[0052] The workflow of this embodiment is as follows: During use, the drive motor 5 is started to rotate the turntable 6. The connecting plate 12 is hinged to the slide cylinder 9 and slide seat 8 via the rotating shaft 10, allowing the slide cylinder 9 to reciprocate. The slide cylinder 9 drives the connecting head 14 to reciprocate the extension and retraction of the gun head 15. Simultaneously, the rotating motor 132 drives the connecting head 14 to rotate, causing the gun head 15 to rotate while extending and retracting. The impact and rotation make the massage more closely conform to the muscle shape. By sliding the rotating wheel 704 with a finger, the screw 702 can be rotated, adjusting the distance between the slide seat 8 and the center of the turntable 6, thereby adjusting the radius of rotation and thus the travel distance of the slide cylinder 9, satisfying the desired function. To meet the different user needs, press the two slide plates 117 with both hands to bring them closer together, causing the long rod 113 to move away from the socket 115 and compress the spring 114. This will pull the connecting plate 12 upwards, quickly separating the connecting plate 12 from the rotating shaft 10. When installing the connecting plate 12, press the slide plates 117 again, then align the two slots 111 with the two rotating shafts 10 and insert them. Then release the slide plates 117. The restoring force of the spring 114 will allow the long rod 113 to be inserted into the socket 115, thus fixing the connecting plate 12 and the rotating shaft 10. This allows for quick and easy installation and removal of the connecting plate 12.

[0053] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A reciprocating stroke structure for a fascia gun, characterized in that, include: The lower housing (1) and the upper housing (2) are connected to a grip (3) on one side of the bottom of the lower housing (1). A bracket (4) is fixedly installed on the upper part of the grip (3) and the inner wall of the lower housing (1). A drive motor (5) is installed at the bottom of the bracket (4). A turntable (6) is connected to the output end of the drive motor (5). A slide (8) is provided on the top of the turntable (6) through an adjustment component (7). A slide cylinder (9) is slidably installed between one side of the lower housing (1) and the upper housing (2). A rotating shaft (10) is rotatably installed on the top of the slide cylinder (9) near the slide (8) and on the top of the slide (8) through a bearing. The two rotating shafts (10) can be detached and installed through a disassembly component (11) and a connecting plate (12). A connector (14) is rotatably installed on one side of the slide cylinder (9) through a rotating component (13). A gun head (15) is provided on one side of the connector (14).

2. The reciprocating stroke structure of a fascia gun according to claim 1, characterized in that, The adjustment assembly (7) includes an adjustment groove (701), which is located on the top side of the turntable (6). A lead screw (702) is rotatably installed in the adjustment groove (701). The outer side wall of the lead screw (702) is slidably connected to a slide block (8) by a thread. A rotating groove (703) is provided on the top of the turntable (6). One side of the lead screw (702) passes through the rotating groove (703) and is fitted with a rotating wheel (704).

3. The reciprocating stroke structure of a fascia gun according to claim 2, characterized in that, A guide rod is installed in the adjustment groove (701), and the slide (8) and the guide rod are slidably connected.

4. The reciprocating stroke structure of a fascia gun according to claim 1, characterized in that, The disassembly assembly (11) includes two slots (111) that are inserted into the rotating shaft (10). The two slots (111) are respectively opened on the bottom sides of the connecting plate (12). Both sides of the connecting plate (12) are provided with long grooves (112) that communicate with the slots (111). A long rod (113) is slidably installed in the long groove (112). One side of the long rod (113) is connected to the inner wall of the long groove (112) away from the slot (111) by a spring (114). One side of the rotating shaft (10) is provided with a socket (115) that is inserted into the other side of the slot (111).

5. The reciprocating stroke structure of a fascia gun according to claim 4, characterized in that, A sliding groove (116) communicating with the long groove (112) is provided between the two ends of the connecting plate (12), and a sliding plate (117) fixedly installed with the long rod (113) is slidably installed in the sliding groove (116).

6. The reciprocating stroke structure of a fascia gun according to claim 1, characterized in that, The rotating assembly (13) includes a connecting frame (131) which is installed on the inner wall of the slide (9). A rotating motor (132) is installed on one side of the connecting frame (131). The connector (14) and the slide (9) are rotatably mounted by bearings, and one side of the connector (14) is connected to the output end of the rotating motor (132).

7. The reciprocating stroke structure of a fascia gun according to claim 6, characterized in that, Multiple rotating rods (133) are installed on one side of the outer wall of the connector (14), and a limiting groove (134) is provided on the inner wall of the slide cylinder (9) to be rotatably connected to the rotating rods (133).

8. The reciprocating stroke structure of a fascia gun according to claim 1, characterized in that, The top of the upper housing (2) is provided with an inspection port (16) on one side of the turntable (6), and a sealing cover (17) is detachably installed on the inspection port (16).

9. The reciprocating stroke structure of a fascia gun according to claim 8, characterized in that, The inner wall of the inspection port (16) is provided with internal threads, and the bottom outer wall of the sealing cover (17) is provided with external threads.

10. The reciprocating stroke structure of a fascia gun according to claim 1, characterized in that, Slide rods (18) are installed at both ends of one side of the slide cylinder (9), and connecting grooves (19) that are slidably connected to the slide rods (18) are opened on both sides of the inner wall of the lower housing (1).

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