Multifunctional Fascia Gun

Abstract

The present invention discloses a multifunctional fascia gun, comprising: a gun body housing provided with a functional cavity having a first opening; a gun head assembly located at the first opening; a driving assembly installed in the functional cavity, the driving assembly including a support rod connected to the gun head assembly, a force-receiving portion extending from the end of the support rod to the first opening, a plurality of turns of energized coils sleeved on the support rod, and a magnetic sleeve slidably connected to the support rod; the gun head assembly is installed on the force-receiving portion, and the magnetic sleeve and the plurality of turns of energized coils repel or attract each other, so that the magnetic sleeve slides left and right in the functional cavity to strike the force-receiving portion, so that the gun head assembly applies a force to the part to be massaged; a power supply assembly electrically connected to the plurality of turns of energized coils. The perfect combination of manual physiotherapy and mechanical power (source) physiotherapy is realized, and the use range of the multifunctional fascia gun is effectively expanded.

Description

Technical Field

[0001] This application relates to the field of massage technology, and in particular to a multifunctional fascia gun. Background Art

[0002] In the related art, a transmission mechanism is provided inside the fascia gun, and the gun head is connected to the transmission mechanism. The transmission mechanism is used to convert the rotational motion of the motor shaft into the reciprocating motion of the gun head to achieve the effect of the gun head hitting and massaging. However, such a massage method can only achieve a single function of hammering and patting, and there is a problem of poor effect for the massage purpose of relaxing muscles and reducing fatigue. It is impossible to apply various massage techniques, which narrows the scope of application of the fascia gun. Summary of the Invention

[0003] This application aims to solve at least one of the technical problems existing in the prior art. For this purpose, the object of this application is to provide a multifunctional fascia gun, including: a gun body housing provided with a functional cavity having a first opening; a gun head assembly located at the first opening; a driving assembly installed in the functional cavity, the driving assembly including a support rod connected to the gun head assembly, a force-receiving portion extending from the end of the support rod to the first opening, a plurality of turns of energized coils sleeved on the support rod, and a magnetic sleeve slidably connected to the support rod; the gun head assembly is installed on the force-receiving portion, and the magnetic sleeve and the plurality of turns of energized coils repel or attract each other, so that the magnetic sleeve slides left and right in the functional cavity and impacts the force-receiving portion, so that the gun head assembly applies a force to the part to be massaged and prevents the force of the magnetic sleeve from being directly applied to the part to be massaged; a power supply assembly electrically connected to the plurality of turns of energized coils.

[0004] In some examples of the present invention, a plurality of silicon steel ring sheets are sleeved on the support rod, and the plurality of turns of energized coils surround the silicon steel ring sheets; stop rings are provided at both ends of the support rod located at the plurality of silicon steel ring sheets.

[0005] In some examples of the present invention, the support rod is made of a magnetic material, and the magnetic sleeve includes a plurality of silicon steel sheets and an energized coil sleeved on the silicon steel sheets.

[0006] In some examples of the present invention, the magnetic sleeve includes a sleeve portion and a permanent magnet provided on the inner ring of the sleeve portion.

[0007] In some examples of the present invention, the force-receiving portion is fixed to the gun body housing by a first fastener.

[0008] In some examples of the present invention, when the first fastener is removed, the force-receiving portion slides on the inner wall of the gun body housing.

[0009] In some examples of the present invention, the gun body shell is provided with a second opening corresponding to the first opening, the support rod passes through the second opening so that the support rod is at least partially located outside the gun body shell, and the part of the support rod located outside the gun body shell is connected to a handle.

[0010] In some examples of the present invention, both ends of the magnetic sleeve are connected to sliding sleeves connected to the support rod, so that the magnetic sleeve can slide back and forth along the contour direction of the support rod.

[0011] In some examples of the present invention, the support rod sleeve is provided with a spring for driving the sliding sleeve to rebound.

[0012] In some examples of the present invention, an adjusting nut for adjusting the stroke of the magnetic sleeve in the functional cavity is provided at a position corresponding to the second opening of the support rod, and the adjusting nut is threadedly connected to the support rod; one end of the spring is fixed to the support rod, and the other end abuts against the adjusting nut;

[0013] When the adjusting nut moves away from the first opening, the extension range of the spring becomes larger and the stroke of the magnetic sleeve becomes larger;

[0014] When the adjusting nut moves toward the first opening, the extension range of the spring becomes smaller and the stroke of the magnetic sleeve is shortened.

[0015] In some examples of the present invention, a mounting protrusion is provided at one end of the force-bearing portion facing the gun head assembly, and the gun head assembly includes a gun head portion and a sleeve portion;

[0016] The sleeve connection portion is sleeved on the mounting protrusion, and / or the sleeve connection portion includes an outer annular column, the outer annular column surrounds to form a telescopic mounting position, the outer annular column is sleeved on the mounting protrusion, and the outer annular column is sleeved with a positioning ring.

[0017] In some examples of the present invention, the functional cavity is provided with a partition cavity, and the force-bearing part is provided with a sliding cavity; the sliding cavity is equipped with an impact hammer head, and a buffer rubber pad is provided between the impact hammer head and the end of the sliding cavity; a drive motor is provided in the partition cavity, and the drive motor is transmission-connected to the impact hammer head through a connecting rod mechanism, so that the impact hammer head repeatedly impacts the buffer rubber pad.

[0018] In some examples of the present invention, the inner edge of the sleeve portion is a first inclined surface, the outer edge of the mounting protrusion has a second inclined surface, and the first inclined surface and the second inclined surface are complementary angles to each other;

[0019] And / or, one of the mounting protrusions and the socket portion is provided with a concave portion, and the other is provided with a convex portion, and the concave portion abuts against the convex portion;

[0020] And / or, the mounting protrusion is provided with a socket groove, and the socket portion is fixed to the socket groove through a positioning ring for mounting a variety of gun heads.

[0021] The additional aspects and advantages of the present application will be partly given in the following description, partly will become obvious from the following description, or will be understood through the practice of the present application. Description of the Drawings

[0022] The above and / or additional aspects and advantages of the present application will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

[0023] Figure 1 is a cross-sectional view of a multifunctional fascia gun according to an embodiment of the present invention;

[0024] Figure 2 is a front view of a multifunctional fascia gun according to an embodiment of the present invention;

[0025] Figure 3 is a schematic diagram of the working principle of a multifunctional fascia gun according to an embodiment of the present invention;

[0026] Figure 4 is a schematic diagram of the working principle of a fascia gun in the market;

[0027] Figure 5 is a schematic structural diagram of a multifunctional fascia gun according to another embodiment of the present invention;

[0028] Figure 6 is a schematic diagram of the gun head assembly of a multifunctional fascia gun according to an embodiment of the present invention;

[0029] Figure 7 is a schematic diagram of the gun head assembly of a multifunctional fascia gun according to another embodiment of the present invention;

[0030] Figure 8 is a schematic diagram of the gun head assembly of a multifunctional fascia gun according to another embodiment of the present invention.

[0031] Reference Signs:

[0032] Multifunctional fascia gun 100;

[0033] Gun body housing 10;

[0034] Function cavity 11; First opening 12; Second opening 13; Partition cavity 14; Driving motor 15; Output shaft 16; Eccentric wheel 17; First connecting shaft 171; First connecting rod 18; Second connecting rod 19; Second connecting shaft 191;

[0035] The gun head assembly 20;

[0036] The gun head part 201; the socket part 202; the outer annular column 2021; the second inclined surface 2022; the concave part 2023; the positioning ring 203;

[0037] The functional area 22;

[0038] The support rod 30; the force-receiving part 31; the mounting protrusion 311; the outer convex part 3111; the socket groove 3112; the mounting position 312; the handheld part 313; the sliding cavity 314; the impact hammer head 315; the buffer rubber pad 316; the detachable handle 317; the threaded hole 318; the first inclined surface 319; the energized coil 32; the magnetic sleeve 33; the sleeve part 331; the permanent magnet 332; the second fastener 333; the connecting part 334; the silicon steel ring sheet 34; the stop ring 35; the first fastener 36; the adjusting nut 37; the magnetic sleeve 38; the spring 39; the handheld handle 40; the third fastener 41;

[0039] The human skin 200; the power source 300; the impact body 400. Specific embodiments

[0040] The embodiments of the present application will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.

[0041] Reference is made below to Figures 1-8 Describe a multifunctional fascia gun 100 according to an embodiment of the present application, including: a gun body housing 10, the gun body housing 10 is provided with a functional cavity 11, and the functional cavity 11 is provided with a first opening 12;

[0042] The gun head assembly 20, the gun head assembly 20 is located at the first opening 12;

[0043] The driving assembly, the driving assembly is installed in the functional cavity 11, the driving assembly includes a support rod 30 connected to the gun head assembly 20, a force-receiving part 31 extending from the end of the support rod 30 to the first opening 12, a plurality of turns of energized coils 32 sleeved on the support rod 30, and a magnetic sleeve 33 slidably connected to the support rod 30; the gun head assembly 20 is installed on the force-receiving part 31, and the magnetic sleeve 33 and the plurality of turns of energized coils 32 repel or attract each other, so that the magnetic sleeve 33 slides left and right in the functional cavity 11 to impact the force-receiving part 31, so that the gun head assembly 20 applies a force to the part to be massaged, and prevents the force of the magnetic sleeve 33 from being directly applied to the part to be massaged; it plays a role in protecting the part to be massaged and has good safety compared with the current market products.

[0044] The power supply component is electrically connected to several turns of energized coils 32. Among them, the power supply component can be arranged in the functional cavity 11 or attached to the gun body shell 10. The power supply component can be in the form of a battery or a plug. When using a plug, an external power supply can be connected, further expanding the applicable range of the multifunctional fascia gun 100 of the present application. The support rod 30 is sleeved with several silicon steel ring sheets 34, and several turns of energized coils 32 surround the silicon steel ring sheets 34; stop rings 35 are provided at both ends of the support rod 30 where it is located among several silicon steel ring sheets 34, and the stop rings can effectively prevent the silicon steel ring sheets 34 from falling off. Among them, the support rod 30 needs to be made of an iron core, and the silicon steel ring sheet 34 is a silicon-iron soft magnetic alloy with extremely low carbon content, generally with a silicon content of 0.5-4.5%. Adding silicon can increase the resistivity and maximum magnetic permeability of the support rod 30, reduce the coercive force, core loss (iron loss) and magnetic aging, and help realize driving the magnetic sleeve 33 to move left and right.

[0045] In some examples of the present invention, the gun head assembly 20 can not only adopt the shapes on the current market, but also adopt a cone, a cube, or a cracked surface body, so as to achieve various massage effects.

[0046] In some examples of the present invention, the magnetic sleeve 33 includes a sleeve portion 331 and a permanent magnet 332 provided on the inner circle of the sleeve portion 331. Among them, the permanent magnet 332 corresponds to the energized coil 32. When the energized coil 32 starts to work with the current reversing, the support rod 30 provided with the silicon steel ring sheet 34 has magnetism like a magnet, and the polarity of the end of the permanent magnet facing the energized coil 32 will undergo the transformation of the same - different - same, and at this time, it will drive the magnetic sleeve 33 to move left and right, achieving the effect of hitting the force-receiving part 31, and further transmitting the acting force to the gun head assembly 20.

[0047] In some examples of the present invention, the support rod 30 is a rod made of a magnetic material, and the magnetic sleeve 33 includes several silicon steel sheets and an energized coil sleeved on the silicon steel sheets. The energized coil wound around the silicon steel sheets makes the silicon steel sheets obtain magnetism, so as to have magnetic attraction or magnetic repulsion with the support rod 30, thereby realizing the collision between the silicon steel sheets and the force-receiving part 31, and further enabling the gun head assembly 20 to exert a massage effect on the user.

[0048] In some examples of the present invention, the gun body shell 10 is provided with a second opening 13 corresponding to the first opening 12, and the support rod 30 passes through the second opening 13 so that at least part of the support rod 30 is located outside the gun body shell 10, and a hand-held handle 40 is connected to the part of the support rod 30 located outside the gun body shell 10.

[0049] In some examples of the present invention, the force-receiving part 31 is fixed to the gun body housing 10 by a first fastener 36. Among them, the first fastener 36 can be a screw or the like. When the first fastener 36 is removed, the force-receiving part 31 slides on the inner wall of the gun body housing 10. At this time, the handle 40 can be used to drive the support rod 30 to move left and right in the functional cavity 11, so that the gun head assembly 20 applies massage to the part to be massaged.

[0050] Among them, the handle 40 can be installed on the support rod 30 through a third fastener 41.

[0051] In some examples of the present invention, sliding sleeves 38 connected to the support rod 30 are connected to both ends of the magnetic sleeve 33, so that the magnetic sleeve 38 can slide back and forth along the contour direction of the support rod 30. A spring 39 is sleeved on the support rod 30 for driving the sliding sleeve 38 to rebound.

[0052] In some examples of the present invention, the sleeve part 331 is connected to the sliding sleeve 38 through a connecting part 334, and the second fastener 333 is used to fix the connecting part 334 and the sleeve part 331.

[0053] Furthermore, at the position of the support rod 30 corresponding to the second opening 13, an adjusting nut 37 for adjusting the stroke of the magnetic sleeve 38 in the functional cavity 11 is provided. The adjusting nut 37 is threadedly connected to the support rod 30; one end of the spring 39 is fixed to the support rod 30, and the other end abuts against the adjusting nut 37;

[0054] Specifically, when the adjusting nut 37 moves away from the first opening 12, the extension range of the spring 39 becomes larger, and the stroke of the magnetic sleeve 38 becomes larger, so that a longer acceleration process can be realized, the impact force received by the force-receiving part 31 is greater, and the massage effect can be improved.

[0055] On the contrary, when the adjusting nut 37 moves towards the first opening 12, the extension range of the spring 39 becomes smaller, and the stroke of the magnetic sleeve 38 shrinks. At this time, the acceleration process of the magnetic sleeve 38 is shortened, so that the impact force received by the force-receiving part 31 is reduced, and it can adapt to users who need different massage intensities. In some examples of the present invention, an installation protrusion 311 is provided at one end of the force-receiving part 31 facing the gun head assembly 20. The gun head assembly 20 includes a gun head part 201 and a socket part 202;

[0056] The socket part 202 is sleeved on the installation protrusion 311, and / or the installation protrusion 311 is provided with an installation position 312. The socket part 202 includes an outer annular column 2021. The outer annular column 2021 is sleeved on the installation protrusion 311. A positioning ring 203 is sleeved on the outer annular column 2021. The installation position 312 becomes smaller or larger due to the deformability of the outer annular column 2021, which facilitates the installation and disassembly of the socket part 202 to realize the convenient replacement of the gun head part 201 and is applicable to a variety of different gun head parts 201.

[0057] In other examples of the present invention, the force-bearing portion 31 is provided with a hand-held portion 313, and the hand-held portion 313 can be covered with a soft cover to achieve anti-slip effects and other effects to help the user hold it. The hand-held portion 313 can be held by the user so that the multi-functional fascia gun 100 of the present application can be used in Figure 3 The principle shown is to massage the human skin 200, that is, the impact body 400 (i.e. the multifunctional fascia gun 100 of the present application) is held manually, and the affected part of the human body is precisely treated artificially, and any action (multiple actions) for treatment can be easily performed, and then the power source 300 is adjusted, and the appropriate hammer vibration frequency and strength are selected, so as to achieve a perfect combination of artificial therapy and mechanical power (source) therapy, and effectively expand the scope of use of the multifunctional fascia gun in the present application. Figure 4 The force application method shown without the impact body 400 has several beneficial effects of high safety and multiple functions.

[0058] Specifically, the massage effect of the present application is quite different from that of manual hammering, such as Figure 3 As shown, the present application adopts the electromagnetic driving principle to realize that the magnetic sleeve 38 repeatedly impacts the force-bearing part 31. The magnetic sleeve 38 does not directly contact the human body, but uses the impact body 400 shown in the figure as an intermediate medium. The impact body 400 can be added with elastic materials such as rubber to achieve non-contact massage. The impact body 400 can also prevent the wear problem of the transmission mechanism connected to the gun head, and can also avoid the noise generated during the transmission process, which has a significant technical progress effect.

[0059] The hand-held portion 313 is installed in the threaded hole 318 through a detachable handle 317 to achieve a detachable connection. In addition, the number of the hand-held portions 313 can be 2, 3, etc., to help the user hold the fascia gun.

[0060] In some examples of the present invention, the functional cavity 11 is provided with a partition cavity 14, and the force-bearing portion 31 is provided with a sliding cavity 314;

[0061] The sliding cavity 314 is provided with an impact hammer head 315 , and a buffer rubber pad 316 is provided between the impact hammer head 315 and the end of the sliding cavity 314 ;

[0062] A driving motor 15 is disposed in the partition chamber 14 , and the driving motor 15 is transmission-connected to the impact hammer 315 through a connecting rod mechanism, so that the impact hammer 315 repeatedly impacts the buffer rubber pad 316 .

[0063] Specifically, refer to Figure 5 As shown, the transmission mechanism includes an eccentric wheel 17 connected to the output shaft 16 of the driving motor 15, a first connecting rod 18 connected to the eccentric wheel, and a second connecting rod 19 connected to the first connecting rod 18;

[0064] Among them, the first connecting rod 18 needs to have a bent portion 181 to convert the rotation of the eccentric wheel 17 into the forward and backward movement of the impact hammer head 315.

[0065] Furthermore, the eccentric wheel 17 is embedded in a bearing. The first connecting shaft 171 is used to connect the first connecting rod 18 and the eccentric wheel 17, and the first connecting shaft 171 is sleeved by the bearing to achieve rotational positioning. At this time, the first connecting shaft 171 can drive the first connecting rod 18 to perform a rotary motion under the drive of the eccentric wheel 17.

[0066] Similarly, the second connecting rod 19 is provided with a second bearing hole. A second bearing is arranged in the second bearing hole. The second bearing passes through the second connecting shaft 191. The second connecting shaft 191 is used to connect the first connecting rod 18 and the second connecting rod 19, so that the second connecting rod 19 can drive the impact hammer head 315 to move forward and backward, causing the impact hammer head 316 to impact the buffer rubber pad 316, and realizing the massage of the gun head part 201 to the part to be massaged.

[0067] In this embodiment, the hammering method of the multifunctional fascia gun of the present application is different from that of ordinary, electric or pneumatic impact hammers. The present application can reduce the sound of electric or electromagnetic direct hammer knocking. When the impact hammer head 315 impacts the stress part 31, a very small non-contact gap is reserved between the impact hammer head 315 and the gun head assembly 20, so that the inertial impact force of the impact hammer head 315 is indirectly transmitted to the gun head part 201 and the skin. Ordinary electric pneumatic impact hammers directly hit the impact hammer or the drill tail by an electric or pneumatic piston, so the sound is particularly loud. In the use of a fascia gun, the noise pollution of the product during use is an important control index, so a direct hammer strike to produce a knocking sound cannot be adopted. The product of the present application can solve the above technical problems and achieve corresponding technical effects.

[0068] Furthermore, in the solution of the present application, a stable impact (hammer) strike or a vibration frequency fixed at 36.8HZ or an adjustable stable frequency can be added. Because in the current market fascia gun products, since the power source is directly connected to the gun head through a connecting rod, and the gun head directly applies pressure to contact the skin, the hammering frequency will slow down, and it is impossible to ensure a stable frequency. The present application can overcome this problem and achieve the massage effect of outputting a stable frequency and an adjustable frequency.

[0069] As Figure 5 shown, as indicated by part A, that is, the above-mentioned support rod 30, magnetic sleeve 38, energized coil 32 and other components. At this time, the stress part 31 can receive at least one impact force, which can meet the massage requirements of users in many aspects.

[0070] As Figure 6 shown, the inner edge of the socket part 202 is the first inclined surface 2022, and the outer edge of the mounting protrusion 311 has the second inclined surface 319. The first inclined surface 2022 and the second inclined surface 319 are complementary angles;

[0071] Among them, the inclination angles of the first inclined surface 2022 and the second inclined surface 319 can be interchanged. At this time, the socket part 202 with an external taper has the following beneficial effects on the integrated gun head assembly: the internal taper of the first inclined surface 2022 and the second inclined surface 319 is in firm contact with the external taper, achieving the effect of improving the connection stability between the gun head part 201 and the socket part 202. When manually holding the handheld part 313 for massage, the gun head part 201 can directly perform circular motion massage, preventing the gun head part 201 from sliding. The gun head part 201 can also be aligned and pressed against the human skin to twist it within a certain angle.

[0072] In another embodiment, it can also be combined with any of the above embodiments. One of the mounting protrusions 311 and the socket part 202 is provided with an inner concave part 2023, and the other is provided with an outer convex part 3111, and the inner concave part 202 abuts against the outer convex part 3111. When the inner concave part 2023 or the outer convex part 3111 is reserved on the mounting protrusion 311, it can play a role in further strengthening the fixation of the gun head part 201 to the force-receiving part 31, and will not affect the normal use of the original gun head that cannot twist in a circle, and the performance of not being able to twist under manual pressure can still be retained.

[0073] Among them, the same inner concave part or outer convex part can also be provided inside the mounting protrusion 311 to cooperate with the socket part 202 to prevent the gun head part 201 from sliding and achieve the above-mentioned mounting purpose.

[0074] Such as Figure 8 As shown, in order to enable the fascia gun of the present application to also install commonly used gun heads in the market, the mounting protrusion 311 is provided with a socket groove 3112, the socket part 202 is installed in the socket groove 3112, and the socket part is fixed in the socket groove 3112 through a positioning ring 203 for installing a variety of gun head parts 201, thereby broadening the applicable range of the gun heads of the present application.

[0075] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0076] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and purpose of the present application. The scope of the present application is defined by the claims and their equivalents.

Claims

1. A multifunctional fascia gun, characterized in that, Comprising: A gun body housing, the gun body housing is provided with a functional cavity, and the functional cavity is provided with a first opening; A gun head assembly, the gun head assembly is located at the first opening; A driving assembly, the driving assembly is installed in the functional cavity, the driving assembly includes a support rod connected to the gun head assembly, a force-receiving portion extending from the end of the support rod to the first opening, several turns of energized coils sleeved on the support rod, and a magnetic sleeve slidably connected to the support rod; the gun head assembly is installed on the force-receiving portion, and the magnetic sleeve and the several turns of energized coils repel or attract each other, so that the magnetic sleeve slides left and right in the functional cavity and impacts the force-receiving portion, so that the gun head assembly applies a force to the part to be massaged, and prevents the force of the magnetic sleeve from being directly applied to the part to be massaged; A power supply assembly, the power supply assembly is electrically connected to the several turns of energized coils; The force-receiving portion is fixed to the gun body housing through a first fastener; when the first fastener is removed, the force-receiving portion slides on the inner wall of the gun body housing, and the gun body housing is provided with a second opening corresponding to the first opening, and the support rod passes through the second opening so that at least a part of the support rod is located outside the gun body housing, and a hand-held handle is connected to the part of the support rod located outside the gun body housing, and the hand-held handle drives the support rod to move left and right in the functional cavity, so that the gun head assembly applies massage to the part to be massaged.

2. The multifunctional fascia gun according to claim 1, wherein, Several silicon steel ring pieces are sleeved on the support rod; the several turns of energized coils surround the silicon steel ring pieces; stop rings are provided at both ends of the support rod where the several silicon steel ring pieces are located.

3. The multifunctional fascia gun according to claim 1, wherein, The magnetic sleeve includes a sleeve portion and a permanent magnet provided on the inner circle of the sleeve portion.

4. The multi-functional fascia gun according to claim 1, wherein, Both ends of the magnetic sleeve are connected with sliding sleeves connected to the support rod, so that the magnetic sleeve can slide back and forth along the contour direction of the support rod.

5. The multifunctional fascia gun according to claim 4, wherein A spring is sleeved on the support rod, which is used to drive the sliding sleeve to rebound; An adjusting nut for adjusting the stroke of the magnetic sleeve in the functional cavity is provided at the position of the support rod corresponding to the second opening, and the adjusting nut is threadedly connected to the support rod; one end of the spring is fixed to the support rod, and the other end abuts against the adjusting nut; When the adjusting nut moves away from the first opening, the extension range of the spring becomes larger, and the stroke of the magnetic sleeve becomes larger; When the adjusting nut moves towards the first opening, the extension range of the spring becomes smaller, and the stroke of the magnetic sleeve shrinks.

6. The multifunctional fascia gun according to claim 1, characterized in that, An installation protrusion is provided at one end of the force-receiving portion facing the gun head assembly, and the gun head assembly includes a gun head portion and a socket portion; The socket portion is sleeved on the installation protrusion, and / or, the socket portion includes an outer annular column, and the outer annular column surrounds to form an expandable installation position, the outer annular column is sleeved on the installation protrusion, and a positioning ring is sleeved on the outer annular column.

7. The multifunctional fascia gun according to claim 6, wherein, The inner edge of the socket portion is a first inclined surface, and the outer edge of the installation protrusion has a second inclined surface, and the first inclined surface and the second inclined surface are complementary angles; And / or, one of the mounting protrusions and the socket portion is provided with a concave portion, and the other is provided with a convex portion, and the concave portion abuts against the convex portion; And / or, the mounting protrusion is provided with a socket groove, and the socket portion is fixed to the socket groove through a positioning ring for mounting a variety of gun heads.

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