Massage head plugging mechanism and fascia gun

Abstract

The massage head inserting and pulling mechanism comprises a connecting rod, a piston and an inserting and connecting assembly, one end of the connecting rod is used for installing a massage head, the other end of the connecting rod is detachably connected with the piston through the inserting and connecting assembly, the inserting and connecting assembly comprises a sleeve and an elastic piece, the sleeve is fixedly connected with the piston, the elastic piece is installed on the sleeve, and the elastic piece is fixedly connected with the piston. The connecting rod extrudes the elastic piece when being inserted into the sleeve, and the elastic piece deforms and applies elastic acting force to the connecting rod, so that the connecting rod is fixedly connected with the piston; during disassembly, the connecting rod can be pulled out of the sleeve by overcoming resistance generated by the elastic piece, detachable connection between the connecting rod and the piston is achieved through the insertion assembly, the stable rebound resilience of the elastic piece is utilized, the anti-loosening effect can be kept when the connecting rod is inserted and pulled out for multiple times, and the machining size of the elastic piece and the sleeve is better controlled compared with silica gel; the connecting rod has the advantages of being easy to machine and improving the connecting effect of the connecting rod and the piston.

Description

Technical Field

[0001] The utility model relates to the technical field of fascia guns, in particular to a massage head plug-in and pull-out mechanism and a fascia gun. Background Art

[0002] At present, most of the massage heads of fascia guns on the market use a silicone interference fit plug-in and pull-out structure, but silicone is a soft material. Repeated plug-in and pull-out actions may cause damage to the silicone material, especially when inserting or pulling out. Improper operation may cause the silicone to tear or wear, which in turn causes the silicone interference fit fastening performance to decrease, thereby affecting the close fit between the massage head and the fascia gun. Secondly, since the processing size and hardness of silicone are difficult to control, the effect of interference fit is not very stable, the connection is loose and tight, the plug-in and pull-out force of the massage head is different, and silicone is prone to aging. If the number of plug-ins and pull-outs is too many, the resilience of the silicone will decrease, and the massage head will easily detach from the piston, affecting its use. Utility Model Content

[0003] The main purpose of the utility model is to provide a massage head plug-in and pull-out mechanism, aiming to solve the problem that the fascia gun adopts a conventional silicone interference plug-in and pull-out structure, which leads to poor fastening performance between the massage head and the body.

[0004] To achieve the above-mentioned purpose, the massage head plugging and unplugging mechanism proposed by the utility model comprises:

[0005] A connecting rod, one end of which is used to connect the massage head;

[0006] A piston connected to an end of the connecting rod away from the massage head;

[0007] A plug-in assembly, comprising a sleeve and an elastic member, wherein the sleeve is mounted on the piston, and the elastic member is mounted on the sleeve;

[0008] The end of the connecting rod away from the massage head is inserted into the sleeve, and the elastic member is used to clamp the connecting rod so that the connecting rod and the piston are detachably connected.

[0009] In one embodiment, the elastic member is protruding from the inner wall of the sleeve, and a slot is provided on the connecting rod. The elastic member is inserted into the slot to fix the connecting rod to the sleeve.

[0010] In one embodiment, the elastic member includes a connecting portion and clamping portions arranged at both ends of the connecting portion, the clamping groove is arranged around the circumference of the connecting rod, and the two clamping portions are used to be clamped into the clamping groove to clamp the connecting rod.

[0011] In one embodiment, the two clamping portions are disposed on both sides of the connecting rod, the clamping portion is cylindrical, and the cross-sectional area of ​​the clamping portion in the clamping groove is less than or equal to half of the cross-sectional area of ​​the clamping portion.

[0012] In one embodiment, a mounting position is provided on the sleeve, a through hole connecting the mounting position and the inner wall of the sleeve is opened on the sleeve, the elastic member is installed in the mounting position, and the clamping portion at least partially passes through the through hole and is clamped into the clamping slot.

[0013] In one embodiment, the connecting rod is in the shape of a polygonal column or a cylinder.

[0014] In one embodiment, a guiding slope is provided at one end of the connecting rod away from the massage head, and the guiding slope is used for sliding contact with the elastic member so that the elastic member slides into the slot after being guided by the guiding slope.

[0015] In one embodiment, the piston has a slot for installing the sleeve, the inner wall surface of the slot is recessed to form a limiting sliding groove, and the outer wall of the sleeve is raised to form a limiting rib adapted for sliding connection with the limiting sliding groove.

[0016] In one embodiment, the massage head plug-in and pull-out mechanism further includes a fastener, a through hole communicating with the slot is provided on the piston, and the fastener is passed through the through hole to fix the sleeve and the piston.

[0017] The utility model also provides a fascia gun, comprising the massage head plug-in and pull-out mechanism in any of the aforementioned embodiments.

[0018] The technical solution of the utility model realizes the detachable connection between the massage head and the piston by adopting a plug-in assembly. Specifically, the massage head plug-in mechanism includes a connecting rod, a piston and a plug-in assembly. One end of the connecting rod is used to install the massage head, and the other end of the connecting rod is detachably connected to the piston through the plug-in assembly. The piston is usually connected to the bearing connecting rod inside the fascia gun, and the eccentric wheel driven by the motor drives the bearing connecting rod and the piston to reciprocate; the plug-in assembly includes a sleeve and an elastic part, the sleeve is fixedly connected to the piston, and the internal shape of the sleeve matches the end of the connecting rod away from the massage head, the elastic part is installed on the sleeve, and the connecting rod squeezes the elastic part when the connecting rod is inserted into the sleeve, the elastic part is deformed and applies an elastic force to the connecting rod to fix the connecting rod and the piston; when disassembly is required, the connecting rod is pulled out of the sleeve. During this process, the connecting rod overcomes the resistance generated by the elastic part. When the connecting rod is separated from the sleeve, the elastic part rebounds and resets.

[0019] It can be understood that in this embodiment, a plug-in assembly is used to achieve a detachable connection between the connecting rod and the piston. The shape of the sleeve matches the connecting rod to ensure the tightness of the connection. The stable rebound performance of the elastic part can maintain the anti-loosening effect when the connecting rod is plugged in and out multiple times. The processing dimensions of the elastic part and the sleeve are better controlled than silicone, and the fastening performance is more stable. It has the advantages of easy processing and improving the tightness of the connection between the connecting rod and the piston. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0021] Figure 1 This is a structural schematic diagram of an embodiment of the massage head plugging and unplugging mechanism of the utility model;

[0022] Figure 2 This is a schematic diagram of the disassembly of an embodiment of the massage head plugging and unplugging mechanism of the utility model;

[0023] Figure 3 This is another disassembled schematic diagram of an embodiment of the massage head plugging and unplugging mechanism of the utility model;

[0024] Figure 4 for Figure 1 Sectional view in the AA direction;

[0025] Figure 5 for Figure 4 Cross-sectional view along the BB direction.

[0026] Description of Figure Numbers:

[0027] 100-massage head plug-in mechanism;

[0028] 110-connecting rod; 110a-slot; 111-guide slope; 112-step;

[0029] 120-piston; 120a-slot; 120b-limiting slide groove; 120c-through hole;

[0030] 130-plug assembly; 131-sleeve; 131a-installation position; 131b-through hole; 131c-threaded hole; 1311-limiting rib; 132-elastic member; 1321-connecting part; 1322-clamping part;

[0031] 140-massage head;

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0036] The utility model provides a massage head plugging and pulling mechanism.

[0037] like Figures 1 to 4As shown, the massage head plug-in mechanism 100 includes a connecting rod 110, a piston 120 and a plug-in assembly 130. One end of the connecting rod 110 is used to install the massage head 140, and the other end of the connecting rod 110 is detachably connected to the piston 120 through the plug-in assembly 130. The piston 120 is usually connected to the bearing connecting rod inside the fascia gun, and the eccentric wheel driven by the motor drives the piston 120 at the end of the bearing connecting rod to reciprocate; the plug-in assembly 130 includes a sleeve 131 and an elastic member 132. The sleeve 131 is fixedly connected to the piston 120, and the inner The shape of the part matches the end of the connecting rod 110 away from the massage head 140. The elastic member 132 is installed on the sleeve 131. When the connecting rod 110 is inserted into the sleeve 131, the elastic member 132 is squeezed. The elastic member 132 is deformed and applies an elastic force to the connecting rod 110 to fix the connecting rod 110 and the piston 120. When disassembly is required, the connecting rod 110 is pulled out of the sleeve 131. During this process, the connecting rod 110 overcomes the resistance generated by the elastic member 132. When the connecting rod 110 is separated from the sleeve 131, the elastic member 132 rebounds and resets.

[0038] It can be understood that in this embodiment, the plug-in assembly 130 is used to achieve a detachable connection between the connecting rod 110 and the piston 120. The shape of the sleeve 131 matches the connecting rod 110 to ensure the tightness of the connection. The stable rebound performance of the elastic member 132 can maintain the anti-loosening effect when the connecting rod 110 is plugged in and out multiple times. The processing dimensions of the elastic member 132 and the sleeve 131 are better controlled than those of silicone, and the fastening performance is more stable. It has the advantages of easy processing and improved connection tightness between the connecting rod 110 and the piston 120.

[0039] It should be noted that the massage head 140 is generally a plastic or metal part, and a connecting structure is provided at one end of the connecting rod 110. The massage head 140 is threaded, clamped or sleeved on the connecting structure to prevent it from falling off; the elastic member 132 can be fixedly installed on the sleeve 131, or can be movably installed on the sleeve 131. When the elastic member 132 is movably installed, a limiting structure is provided on the sleeve 131 to limit the movable space of the elastic member 132, or the elastic member 132 is limited by the cooperation of the sleeve 131 and the piston 120. This part will be explained in detail below; the sleeve 131 and the piston 120 can be connected by threads, clamping, screws, or other components can be used to connect the piston 120 to fix the sleeve 131 on the piston 120. In addition to the above-mentioned connecting structure, the connection method between the various features can be reasonable, and no specific restrictions are made here.

[0040] In one embodiment, the elastic member 132 is protruded from the inner wall of the sleeve 131 , and a slot 110 a is provided on the connecting rod 110 . The elastic member 132 is inserted into the slot 110 a to fix the connecting rod 110 to the sleeve 131 .

[0041] like Figure 3 As shown, in one embodiment of the utility model, the elastic member 132 protrudes on the inner wall of the sleeve 131, and a slot 110a is provided on the connecting rod 110 at a position corresponding to the elastic member 132. When the connecting rod 110 is inserted into the sleeve 131 and contacts the elastic member 132, the connecting rod 110 squeezes the elastic member 132 to deform it. When the connecting rod 110 is installed in place, the elastic member 132 rebounds and snaps into the slot 110a and abuts against the inner wall of the slot 110a to prevent the connecting rod 110 from being separated from the sleeve 131. The connecting rod 110 is also provided with an annular step 112 for abutting against the piston 120 and the sleeve 131. For further reference, Figure 4 The step 112 has the same outer diameter as the piston 120, so that the abutment is smooth and beautiful, and the step 112 abuts against the edge of the piston 120 to prevent the connecting rod 110 from further extending into the sleeve 131, preventing the connecting rod 110 from being inserted too deeply and causing difficulty in pulling out, and at the same time preventing the massage head 140 from sliding with the connecting rod 110 during the massage process, affecting the massage experience. It can be seen from the above that by setting the step 112 and the slot 110a, the sleeve 131 and the elastic member 132 are used to fix the connecting rod 110 on the piston 120, which is beneficial to improving the stability of the connection.

[0042] In one embodiment, the elastic member 132 includes a connecting portion 1321 and clamping portions 1322 disposed at both ends of the connecting portion 1321 . The clamping slot 110 a is disposed around the circumference of the connecting rod 110 . The two clamping portions 1322 are used to clamp into the clamping slot 110 a to clamp the connecting rod 110 .

[0043] like Figure 3 As shown, in one embodiment of the utility model, the elastic member 132 is a U-shaped spring made of bent elastic metal wire, including a connecting portion 1321 bent in an arc shape and a clamping portion 1322 arranged at both ends of the connecting portion 1321, the two clamping portions 1322 are extended along a straight line and parallel to each other to form a clamping arm, the connecting rod 110 is recessed to form a clamping groove 110a, and the clamping groove 110a is arranged around the connecting rod 110 to ensure that the connecting rod 110 is inserted into the sleeve 131 from any angle, and the two clamping portions 1322 of the elastic member 132 can be clamped into the clamping groove 11 0a to achieve clamping, the two clamping parts 1322 act as clamping arms to clamp the connecting rod 110, which can improve the fastening effect of the clamping compared to the cooperation between a single clamping part 1322 and the slot 110a; of course, in some other embodiments of the utility model, the two clamping parts 1322 can be V-shaped, or extend in a curved arc shape, and the clamping part 1322 can also be an irregular shape, which is inserted into the slot 110a to form single-point contact, multi-point contact, surface contact or line contact with the connecting rod 110, and can be set according to actual needs, such as reference plug-in force, tightness, etc.

[0044] In one embodiment, two clamping portions 1322 are disposed on both sides of the connecting rod 110 . The clamping portions 1322 are cylindrical, and the cross-sectional area of ​​the clamping portions 1322 in the clamping slot 110 a is less than or equal to half of the cross-sectional area of ​​the clamping portions 1322 .

[0045] like Figure 3 and Figure 4 As shown, in one embodiment of the utility model, the two clamping portions 1322 are parallel to each other and are located at relative positions on both sides of the connecting rod 110, and the elastic member 132 is formed by bending a long cylindrical metal wire. The clamping portion 1322 is clamped into the clamping slot 110a to make the connecting rod and the sleeve 131 detachably connected. In order to prevent the elastic member 132 from completely clamping the connecting rod 110, the cross-sectional area of ​​the clamping portion 1322 in the clamping slot 110a is less than or equal to half of its own cross-sectional area.

[0046] For details, please refer to Figure 4 If the cross-sectional area of ​​the clamping portion 1322 inserted into the clamping slot 110a is larger than half of its own cross-sectional area, that is, the clamping portion 1322 abuts against the side wall of the clamping slot 110a, when the connecting rod 110 is pulled out, the clamping portion 1322 prevents the connecting rod 110 from escaping from the sleeve 131, and the disassembly cannot be completed; on the contrary, if the edge of the opening of the clamping slot 110a abuts against the clamping portion 1322, when the connecting rod 110 is pulled out, the edge of the opening of the clamping slot 110a slides along the curved surface of the clamping portion 1322, and the two clamping portions 1322 are forced to move in a direction away from the connecting rod 110, and the connecting portion 1321 of the elastic member 132 undergoes elastic deformation. When the connecting rod 110 is completely pulled out, the connecting portion 1321 of the elastic member 132 rebounds, and the two clamping portions 1322 are restored to their original parallel positions, making it convenient for the connecting rod 110 to be installed into the sleeve 131 again.

[0047] It can be understood that limiting the cross-sectional area of ​​the two clamping portions 1322 inserted into the slot 110a is to prevent jamming, and setting the clamping portion 1322 as a cylindrical structure is to facilitate sliding contact with the opening edge of the slot 110a, reduce the resistance encountered when pulling out the connecting rod 110, and improve the stability of the disassembly and assembly of the connecting rod 110; therefore, in other embodiments of the utility model, the clamping portion 1322 can also be other shapes besides the cylindrical shape, such as a triangular prism shape, a polygonal column shape, etc., and the cross-sectional area of ​​the clamping portion 1322 inserted into the slot 110a is not specifically limited, and a guide structure is set in the slot 110a and / or the clamping portion 1322, so that the clamping portion 1322 can be smoothly inserted into or withdrawn from the slot 110a under the guidance of the guide structure, thereby completing the detachable connection between the connecting rod 110 and the sleeve 131.

[0048] In one embodiment, a mounting position 131a is provided on the sleeve 131, and a through hole 131b connecting the mounting position 131a and the inner wall of the sleeve 131 is opened on the sleeve 131. The elastic member 132 is installed on the mounting position 131a, and the clamping portion 1322 at least partially passes through the through hole 131b and is clamped into the clamping slot 110a.

[0049] like Figure 2 , Figure 3 and Figure 5 As shown, in one embodiment of the utility model, the side wall of the sleeve 131 is recessed toward the direction close to the connecting rod 110 to form a mounting position 131a, and the mounting position 131a matches the shape of the elastic member 132. A through hole 131b is also provided on the sleeve 131, and the through hole 131b connects the inner wall of the sleeve 131 and the mounting position 131a. When the elastic member 132 is installed in the mounting position 131a, part of the structure of the two clamping parts 1322 passes through the through hole 131b and protrudes from the inner wall of the sleeve 131. When the connecting rod 110 is inserted into the sleeve 131, the clamping part 1322 slides in contact with the surface of the connecting rod 110 and is clamped into the clamping groove 110a to achieve clamping.

[0050] from Figure 2 and Figure 5 It can be known that by installing the elastic member 132 into the installation position 131a and then installing the sleeve 131 into the piston 120, the elastic member 132 can be limited on the installation position 131a. The installation is simple and convenient, which is beneficial to improving the assembly efficiency of the product. It should be noted that in other embodiments of the utility model, the installation position 131a has a limiting structure for limiting the movement of the elastic member 132, or a fastener is provided to close the opening of the installation position 131a to prevent the elastic member 132 from escaping from the installation position 131a. Therefore, the sleeve 131 and the piston 120 can be a plug-in relationship or other connection structures, such as a threaded connection. The elastic member 132 is not necessarily installed by the piston 120 cooperating with the sleeve 131, and corresponding adjustments can be made according to actual needs.

[0051] In one embodiment, the connecting rod 110 is in the shape of a polygonal column or a cylinder.

[0052] like Figure 3 As shown, in order to improve the connection stability of the massage head 140, the shape of the connecting rod 110 is a polygonal column or a cylinder. In one embodiment of the utility model, the shape of the connecting rod 110 is a hexagonal column, and the interior of the sleeve 131 is also a hexagonal socket. The connecting rod 110 is inserted into the sleeve 131. The hexagonal structure can prevent the connecting rod 110 from rotating in the sleeve 131. When the user uses the fascia gun for massage, it can prevent the massage head 140 from rotating with the connecting rod 110 and affecting the massage experience. In addition to the hexagonal column, the connecting rod 110 can also be a triangular prism, a rectangular parallelepiped, an octagonal column, a cylinder, etc.

[0053] Furthermore, the shape of the socket formed in the sleeve 131 can be a polygonal cylinder or a cylindrical shape, and the shapes of the connecting rod 110 and the socket in the sleeve 131 do not necessarily match. For example, when the socket of the sleeve 131 is a polygonal cylinder, the connecting rod 110 can be a cylinder in addition to a polygonal cylinder; or the socket of the sleeve 131 and the connecting rod 110 are both cylindrical, so there are many types of matching structures between the two, which are not specifically limited here; in addition, when the socket of the sleeve 131 and the connecting rod 110 are both cylindrical, in order to prevent the massage head 140 from rotating, a limiting structure can be added to the connecting rod 110 and / or the sleeve 131 to prevent the connecting rod 110 from rotating around the axis of the sleeve 131.

[0054] In one embodiment, a guide slope 111 is disposed at one end of the connecting rod 110 away from the massage head 140 . The guide slope 111 is used to slide in contact with the elastic member 132 , so that the elastic member 132 slides into the slot 110 a after being guided by the guide slope 111 .

[0055] like Figure 3 As shown, in order to prevent the elastic member 132 from pressing against the connecting rod 110, in one embodiment of the present invention, a guiding slope 111 is provided at one end of the connecting rod 110 away from the massage head 140. Specifically, six guiding slopes 111 are provided at the end of the hexagonal column connecting rod 110. The connecting rod 110 is inserted into the sleeve 131 at any angle, wherein the guiding slopes 111 on two opposite sides contact the two clamping parts 1322 of the elastic member 132 respectively, and the clamping parts 1322 slide along the guiding slopes 111 to the outer surface of the connecting rod 110. At this time, the elastic member 132 is pressed against the connecting rod 110. The connecting portion 1321 of the feature 132 undergoes elastic deformation, and when the connecting rod 110 is inserted into place, the two clamping portions 1322 are inserted into the clamping groove 110a, and the connecting portion 1321 rebounds; in another embodiment of the utility model, the guiding inclined surface 111 is an arc-shaped curved surface, and can also be other inclined surfaces with a guiding function, which is not limited here. It can be seen from the above that by setting the guiding inclined surface 111, it is helpful to spread the two clamping portions 1322 when inserting the connecting rod 110, thereby preventing the end of the connecting rod 110 from pressing against the clamping portion 1322 and making it impossible to install it into place.

[0056] In one embodiment, the piston 120 has a slot 120a for installing the sleeve 131, the inner wall surface of the slot 120a is recessed to form a limiting groove 120b, and the outer wall of the sleeve 131 is raised to form a limiting rib 1311 that is adapted to slide and connect with the limiting groove 120b.

[0057] like Figure 2 , Figure 3 and Figure 5As shown, in order to prevent the massage head 140 from rotating, in one embodiment of the utility model, the piston 120 has a slot 120a that matches the shape of the sleeve 131, and the inner wall of the slot 120a is recessed in the direction away from the sleeve 131 to form a limiting slot 120b, and the limiting slot 120b is extended along the axial direction of the piston 120, and a corresponding limiting slot 120b is raised on the outer surface of the sleeve 131 to form a limiting rib 1311, and the limiting rib 1311 is extended along the axial direction of the sleeve 131. The sleeve 131 is installed in the piston 120, and the limiting rib 1311 slides along the limiting slot 120b, and the limiting rib 1311 abuts against the side wall of the limiting slot 120b to prevent the sleeve 131 from rotating in the slot 120a of the piston 120, thereby improving the massage stability of the massage head 140.

[0058] In one embodiment, the massage head plug-in mechanism 100 further includes a fastener. A through hole 120 c communicating with the slot 120 a is formed on the piston 120 . The fastener is passed through the through hole 120 c to securely connect the sleeve 131 to the piston 120 .

[0059] like Figure 4 As shown, in one embodiment of the present invention, the massage head plug-in mechanism 100 further includes a fastener for fixing the sleeve 131 and the piston 120. Specifically, a through hole 120c communicating with the bottom of the slot 120a is provided on the piston 120, and a threaded hole 131c is provided at one end of the sleeve 131 away from the massage head 140. The fastener (not shown) is a screw. The sleeve 131 is inserted into the slot 120a of the piston 120, and the threaded hole 131c is aligned with the through hole 120c. The screw is passed through the through hole 120c and screwed into the threaded hole 131c, so that the sleeve 131 can be fixed to the piston 120. In other embodiments of the present invention, the fastener can also be a rivet, a pin, etc., and the through hole 120c can also be provided on the side wall of the piston 120, all of which can realize the fixed connection between the sleeve 131 and the piston 120. Therefore, the structure of the fastener and the position of the through hole 120c are not specifically limited.

[0060] The utility model also proposes a fascia gun, which includes a massage head plug-in mechanism 100. The specific structure of the massage head plug-in mechanism 100 refers to the above embodiment. Since the fascia gun adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0061] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A massage head plug-in and pull-out mechanism, characterized in that: include: A connecting rod, one end of which is used to connect the massage head; A piston connected to an end of the connecting rod away from the massage head; A plug-in assembly, comprising a sleeve and an elastic member, wherein the sleeve is mounted on the piston, and the elastic member is mounted on the sleeve; The end of the connecting rod away from the massage head is inserted into the sleeve, and the elastic member is used to clamp the connecting rod so that the connecting rod and the piston are detachably connected.

2. The massage head plug-in mechanism according to claim 1, characterized in that: The elastic member is protruding from the inner wall of the sleeve, and a clamping groove is provided on the connecting rod. The elastic member is clamped into the clamping groove so that the connecting rod is fixedly connected to the sleeve.

3. The massage head plug-in mechanism according to claim 2, characterized in that: The elastic member includes a connecting portion and clamping portions arranged at both ends of the connecting portion, the clamping groove is arranged around the circumference of the connecting rod, and the two clamping portions are used to be clamped into the clamping groove to clamp the connecting rod.

4. The massage head plug-in mechanism according to claim 3, characterized in that: The two clamping parts are arranged on both sides of the connecting rod, the clamping parts are cylindrical, and the cross-sectional area of ​​the clamping parts in the clamping groove is less than or equal to half of the cross-sectional area of ​​the clamping parts.

5. The massage head plug-in mechanism according to claim 3, characterized in that: The sleeve is provided with a mounting position, the sleeve is provided with a through hole connecting the mounting position and the inner wall of the sleeve, the elastic member is installed in the mounting position, and the clamping portion at least partially passes through the through hole and is clamped into the clamping groove.

6. The massage head plugging and unplugging mechanism according to any one of claims 1 to 5, characterized in that: The connecting rod is in the shape of a polygonal column or a cylinder.

7. The massage head plug-in and pull-out mechanism according to claim 2, characterized in that: A guiding slope is arranged at one end of the connecting rod away from the massage head, and the guiding slope is used for sliding contact with the elastic member so that the elastic member slides into the slot after being guided by the guiding slope.

8. The massage head plug-in and pull-out mechanism according to claim 6, characterized in that: The piston has a slot for mounting the sleeve, the inner wall of the slot is concave to form a limiting sliding groove, and the outer wall of the sleeve is convex to form a limiting rib adapted for sliding connection with the limiting sliding groove.

9. The massage head plug-in and pull-out mechanism according to claim 8, characterized in that: The massage head plug-in and pull-out mechanism further comprises a fastener, a through hole communicating with the slot is provided on the piston, and the fastener is passed through the through hole to fix the sleeve and the piston.

10. A fascia gun, characterized in that: It comprises a massage head plugging and unplugging mechanism as claimed in any one of claims 1 to 9.

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