Portable multi-mode pain relieving massage instrument

Abstract

The invention relates to the field of massage instruments, in particular to a portable multi-mode pain relieving massage instrument, which comprises a folding mechanism, which comprises two machine bodies, and the adjacent ends of the two machine bodies are connected through a folding flat cable; the adjusting mechanism comprises an arc-shaped cavity, a first storage cavity, a sliding cavity and a limiting cavity which are formed in the machine body, an arc-shaped plate is arranged in the arc-shaped cavity, a guiding part, a blocking part, a pressing part and a butt joint part are arranged on the arc-shaped plate, a limiting part is arranged in the first storage cavity, and a clamping part is arranged on the limiting part; and the auxiliary mechanism comprises an air bag on the machine body, and a pneumatic part is arranged in the arc-shaped cavity. Through the arrangement of the folding mechanism, the adjusting mechanism and the auxiliary mechanism, a user can conveniently fold and store the massage instrument, and it can be guaranteed that the massage instrument is attached to the neck of the user all the time when the massage instrument is used.

Description

Technical Field

[0001] The present invention relates to the field of massagers, and in particular to a portable multi-mode pain relief massager. Background Art

[0002] There are various types of massagers. According to multiple parts of the human body, a variety of massage devices have been developed. They are a new generation of health care equipment developed based on disciplines such as physics, bionics, bioelectrics, and traditional Chinese medicine, as well as years of clinical practice experience. They have a variety of simulation functions, can relieve stress, promote blood circulation, and treat joint pain, etc.

[0003] Among massagers, the more common ones are the massagers for neck and head care, which are used to relieve cervical pain. In the prior art, most neck massagers are integrally formed. When the massager is stored, since the whole massager is circular, it cannot be folded and placed, occupying a relatively large space when placed, and the space utilization rate is not high. At the same time, the existing massagers cannot be adjusted according to the actual situation of the user's neck to ensure that the electrode pads on the massager always fit the neck. Once the user lies down, the electrode pads on the massager will separate from the user's skin, failing to achieve the massage effect. Summary of the Invention

[0004] In view of the problems in the above or the prior art that the existing massagers cannot be folded and stored and the massagers cannot always fit the neck during use, the present invention is proposed.

[0005] Therefore, the purpose of the present invention is to provide a portable multi-mode pain relief massager.

[0006] To solve the above technical problems, the present invention provides the following technical solution: A portable multi-mode pain relief massager, including a folding mechanism, which includes a body. The number of the bodies is two, and one adjacent end of the two bodies is connected by a folding cable; an adjusting mechanism, including an arc-shaped chamber, a first storage chamber, a sliding chamber, and a limiting chamber opened on the body. An arc-shaped plate is arranged inside the arc-shaped chamber. A guiding part, a blocking part, a pressing part, and a docking part are arranged on the arc-shaped plate. A restricting part is arranged inside the first storage chamber. A clamping part is arranged on the restricting part; an auxiliary mechanism, including an airbag on the body, and a pneumatic part is arranged inside the arc-shaped chamber.

[0007] As a preferred solution of the portable multi-mode pain relief massager of the present invention, among them: The guiding part includes a slot, an inclined slot, and a first sliding slot on the arc-shaped plate.

[0008] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, the blocking portion includes a second chute on the arc-shaped plate. The inner wall of the second chute is connected to a first elastic piece. One end of the first elastic piece is connected to an arc-shaped block. A blocking rod is connected to the arc-shaped block, and an inclined surface is formed on the arc-shaped block.

[0009] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, the pressing portion includes a second storage cavity on the arc-shaped plate. A pressing rod and a first spring are arranged inside the second storage cavity, and a pressing block is fixedly sleeved on the side wall of the pressing rod.

[0010] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, the docking portion includes a through hole on the pressing rod. A third chute is formed on the arc-shaped plate. A slider is arranged inside the third chute, and a docking rod and a docking groove are arranged on the slider.

[0011] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, the limiting portion includes a second spring inside the first storage cavity. One end of the second spring is connected to an insertion rod.

[0012] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, the clamping portion includes a second elastic piece on the side wall of the insertion rod. A push plate is arranged on the machine body. One end of the push plate extends into the limiting cavity and is connected to an anti-detachment strip. A third elastic piece is connected to the side wall of the push plate.

[0013] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, the pneumatic portion includes a folding airbag inside the arc-shaped cavity. The folding airbag is connected to an air delivery pipe, and the air delivery pipe communicates with the airbag.

[0014] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, a magnetic sheet is arranged on the side wall of the machine body, and the folding flexible cable is located on one side adjacent to the magnetic sheet.

[0015] As a preferred embodiment of the portable multi-mode pain relief massager of the present invention, the number of the slots and the inclined slots is multiple. The inclined slot adjacent to the pressing rod is connected to the outer surface of the arc-shaped plate.

[0016] The beneficial effects of the portable multi-mode pain relief massager of the present invention are as follows: through the setting of the folding mechanism, the adjusting mechanism and the auxiliary mechanism, compared with the traditional integrated massager, the massager can be stored and folded, so that the massager can be placed in a smaller backpack, and is more portable. When using the massager, two-way adjustment and one-way adjustment are adopted, and the position of the electrode sheet on the massager can be adjusted according to the specific situation of the user's neck, so that the massage position is more precise. At the same time, in the process of adjusting the position of the electrode sheet, as the relative position of the body and the arc plate changes, the gas inside the folded air bag can be flushed into the interior of the air bag, so that the massager fits the user's neck more closely and is adapted to various postures of the user. No matter what posture the user is in, the user's neck can be massaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0018] Figure 1 A schematic diagram of a portable multi-mode pain relief massager.

[0019] Figure 2 A top view schematic diagram of a portable multi-mode pain relief massager.

[0020] Figure 3 Portable multi-mode pain relief massager Figure 2 Enlarged schematic diagram at point A in the middle.

[0021] Figure 4 A schematic cross-sectional view of a portable multi-mode pain relief massager.

[0022] Figure 5 A partial cross-sectional schematic diagram of a curved chamber in a portable multi-mode pain relief massager.

[0023] Figure 6 Portable multi-mode pain relief massager Figure 5 Enlarged schematic diagram of point B in the middle.

[0024] Figure 7 A schematic diagram of the interior of the second slide in the portable multi-mode pain relief massager.

[0025] Figure 8 Schematic diagram of an exploded view of the adjustment mechanism in a portable multi-mode pain relief massager.

[0026] In the figure: 10, body; 11, folding cable; 12, arc chamber; 13, first storage chamber; 14, sliding chamber; 15, limiting chamber; 16, arc plate; 17, guiding part; 171, slot; 172, inclined slot; 173, first sliding slot; 18, blocking part; 181, second sliding slot; 182, first elastic sheet; 183, arc block; 184, blocking rod; 185, inclined plane; 19, pressing part; 191, second storage chamber; 192, pressing rod; 193, first spring; 194, pressing block; 20, docking part; 201, through hole; 202, third sliding slot; 203, slider; 204, docking rod; 205, docking groove; 21, limiting part; 211, second spring; 212, inserting rod; 22, positioning part; 221, second elastic sheet; 222, pushing plate; 223, anti - detachment strip; 224, third elastic sheet; 23, airbag; 24, pneumatic part; 241, folding airbag; 242, air delivery pipe; 25, magnetic sheet. Detailed implementation mode

[0027] To make the above - mentioned objects, features, and advantages of the present invention more obvious and understandable, the following will give a detailed description of the specific implementation mode of the present invention with reference to the accompanying drawings of the specification.

[0028] Refer to Figures 1 to 8 , this technical solution provides a portable multi - mode pain relief massager, which includes a folding mechanism, an adjustment mechanism, and an auxiliary mechanism. It can realize the folding of the massager, reduce the storage space of the massager, and facilitate the carrying effect of the massager. At the same time, during the use of the massager, the massage position of the massager can be flexibly adjusted according to the actual situation of the user's neck.

[0029] Furthermore, the folding mechanism facilitates the folding and storage of the massager. It includes a body 10, and the number of bodies 10 is two. One adjacent end of the two bodies 10 is connected by a folding cable 11.

[0030] Moreover, a magnetic sheet 25 is arranged on the side wall of the body 10, and the folding cable 11 is located on the side adjacent to the magnetic sheet 25.

[0031] During use, when the two bodies 10 are flipped and folded, the magnetic sheets 25 on the two bodies 10 can adsorb each other to prevent the two bodies 10 from separating, which is convenient for storing the massager.

[0032] Further, the adjustment mechanism can dock the two bodies 10 according to the user's needs. At the same time, it can adjust the position of the electrode pads on the massager according to the user's needs, with stronger adaptability. The electrode pads on the massager can adjust the pressing mode according to the function buttons on the massager (the mode switching on the massager belongs to the prior art and will not be elaborated here). It includes the arc-shaped chamber 12, the first storage chamber 13, the sliding chamber 14, and the limiting chamber 15 opened on the body 10. Arc-shaped chambers 12 are opened at opposite ends of the two bodies 10. The first storage chamber 13 is located above the arc-shaped chamber 12. The sliding chamber 14 and the limiting chamber 15 communicate with each other. An arc-shaped plate 16 is provided inside the arc-shaped chamber 12. One arc-shaped plate 16 is provided on each of the two bodies 10. The two arc-shaped plates 16 can be simply docked by inserting. The arc-shaped plate 16 can move inside the arc-shaped chamber 12. The arc-shaped plate 16 is provided with a guiding portion 17, a blocking portion 18, a pressing portion 19, and a docking portion 20. A restricting portion 21 is provided inside the first storage chamber 13, and a clamping portion 22 is provided on the restricting portion 21.

[0033] Furthermore, the guiding portion 17 includes a slot 171, an inclined slot 172, and a first sliding slot 173 on the arc-shaped plate 16. The slot 171, the inclined slot 172, and the first sliding slot 173 are all located at the top of the arc-shaped plate 16. The slot 171 communicates with the inclined slot 172. The top of the slot 171 and the top of the inclined slot 172 both communicate with the first sliding slot 173. The number of slots 171 corresponds to the number of inclined slots 172 one by one. The number of slots 171 is multiple, and the multiple slots 171 are evenly distributed at the top of the arc-shaped block 183.

[0034] Furthermore, the blocking portion 18 includes a second sliding slot 181 on the arc-shaped plate 16. The second sliding slot 181 communicates with the slot 171, the inclined slot 172, and the first sliding slot 173. A first elastic piece 182 is connected to the inner wall of the second sliding slot 181. One end of the first elastic piece 182 is connected to an arc-shaped block 183. The arc-shaped block 183 can move inside the second sliding slot 181. The top of the arc-shaped block 183 is lower than the bottom of the slot 171. A blocking rod 184 is connected to the arc-shaped block 183. The top of the blocking rod 184 is horizontal with the bottom of the first sliding slot 173. An inclined surface 185 is provided on the arc-shaped block 183, and the inclined surface 185 is located at the end away from the first elastic piece 182.

[0035] Specifically, the arc-shaped block 183 can move inside the second sliding slot 181. At the same time, the arc-shaped block 183 can drive the blocking rod 184 to move together, so that the blocking rod 184 has two states. One is that the blocking rod 184 is located between the slot 171 and the inclined slot 172, and the other is that it is located inside the second sliding slot 181.

[0036] Furthermore, the pressing portion 19 includes a second storage cavity 191 on the arc plate 16, and the second storage cavity 191 is located at one end away from the arc chamber 12. A pressing rod 192 and a first spring 193 are provided inside the second storage cavity 191. The pressing rod 192 cannot be detached from the inside of the second storage cavity 191. When the pressing rod 192 descends, it can drive the first spring 193 to contract. A pressing block 194 is fixedly sleeved on the side wall of the pressing rod 192, and one side of the pressing block 194 is in contact with the inclined surface 185.

[0037] During use, when the pressing rod 192 descends, the pressing rod 192 drives the pressing block 194 to squeeze the inclined surface 185. When the inclined surface 185 on the arc block 183 is squeezed, the arc block 183 can move toward the inside of the arc chamber 12, and the arc block 183 can drive the first spring 182 to contract. At the same time, the arc block 183 drives the blocking rod 184 to move between the slot 171 and the inclined groove 172. When the pressure on the pressing rod 192 is removed, the first spring 193 and the first spring 182 are restored at the same time, so that the arc block 183 is restored to its initial state.

[0038] Furthermore, the docking portion 20 includes a through hole 201 on the pressing rod 192, the through hole 201 is rectangular, a third slide groove 202 is opened on the arc plate 16, the length direction of the second slide groove 181 is perpendicular to the length direction of the third slide groove 202, and a slider 203 is arranged inside the third slide groove 202. When the two bodies 10 are docked, the slider 203 is located on the midline of the docking of the two arc plates 16, and a docking rod 204 and a docking groove 205 are arranged on the slider 203. The docking rod 204 and the docking groove 205 are located on the same side, and the docking rod 204 and the docking groove 205 are respectively located at the two ends of the slider 203.

[0039] During use, when two bodies 10 are docked, two docking rods 204 are respectively inserted through the through openings 201 and into the docking grooves 205, completing a simple snap connection to prevent the docking rods 204 from separating from the docking grooves 205, thereby making the two arc-shaped plates 16 more stable when docked.

[0040] It should be noted that when the pressing rod 192 is lowered, due to the provision of the through hole 201 , the docking rod 204 will not block the lowering of the pressing rod 192 .

[0041] Furthermore, the limiting portion 21 includes a second spring 211 inside the first storage cavity 13, one end of the second spring 211 is connected to an insertion rod 212, the top of the insertion rod 212 contacts the bottom of the second spring 211, the bottom of the insertion rod 212 extends to the inside of the arc-shaped chamber 12, and the bottom of the insertion rod 212 is located inside the slot 171.

[0042] During use, when the insertion rod 212 is inside the slot 171, the position of the arc-shaped block 183 inside the arc-shaped chamber 12 can be fixed, so that the body 10 can only move in the opposite direction. When the two bodies 10 approach each other, the insertion rod 212 can move from inside the slot 171 towards the inclined slot 172, causing the insertion rod 212 to rise. When the insertion rod 212 rises, the insertion rod 212 drives the second spring 211 to contract. When the insertion rod 212 moves into the next slot 171, the position of the arc-shaped plate 16 is re-locked.

[0043] Furthermore, the positioning part 22 includes a second elastic sheet 221 on the side wall of the insertion rod 212. One end of the second elastic sheet 221 away from the insertion rod 212 contacts the inner wall of the sliding chamber 14. A push plate 222 is provided on the body 10. One end of the push plate 222 extends into the limiting chamber 15 and is connected with an anti-disengagement strip 223. The anti-disengagement strip 223 can prevent the push plate 222 from detaching from the body 10. The other end of the push plate 222 is located outside the body 10. A third elastic sheet 224 is connected to the side wall of the push plate 222. One end of the third elastic sheet 224 away from the push plate 222 is connected to the outer side wall of the body 10. The third elastic sheet 224 can drive the push plate 222 to return to the initial position.

[0044] Furthermore, the number of slots 171 and inclined slots 172 is multiple. The inclined slot 172 adjacent to the pressing rod 192 is connected to the outer surface of the arc-shaped plate 16.

[0045] During use, when the insertion rod 212 rises, it can drive the second spring 211 to contract. The insertion rod 212 drives the second elastic sheet 221 to rise inside the sliding chamber 14. When the insertion rod 212 rises from the last inclined slot 172, the insertion rod 212 can move to the top of the arc-shaped plate 16. At this time, the second elastic sheet 221 can enter the limiting chamber 15 from the sliding chamber 14. At this time, through the setting of the second elastic sheet 221 and the limiting chamber 15, the second spring 211 can be prevented from recovering. At this time, the user can move the insertion rod 212 to the first slot 171, press the push plate 222, and the push plate 222 can drive the anti-disengagement strip 223 to squeeze the second elastic sheet 221, so that the second elastic sheet 221 enters the sliding chamber 14, enabling the second spring 211 to recover. When the second spring 211 recovers, it can drive the insertion rod 212 to re-enter the first slot 171, facilitating subsequent re-adjustment.

[0046] Further, the auxiliary mechanism can further wrap around the user's neck to make the massage more conform to the user's neck. It includes an airbag 23 on the body 10. The airbag 23 is located at the bottom of the opposite side of the two bodies 10. A pneumatic part 24 is arranged inside the arc-shaped chamber 12.

[0047] Further, the pneumatic part 24 includes a folding airbag 241 inside the arc-shaped chamber 12. The folding airbag is connected to an air delivery pipe, and the air delivery pipe communicates with the airbag 23. One end of the folding airbag 241 away from the air delivery pipe contacts the arc-shaped plate 16.

[0048] During use, when the plug rod 212 is inside the first slot 171, the gas inside the folding airbag 241 is not squeezed, so that the expansion degree of the airbag 23 is the smallest. As the distance between the two bodies 10 decreases, the folding airbag 241 can be contracted during the movement of the arc-shaped plate 16. The gas inside the folding airbag 241 enters the airbag 23 through the air delivery pipe, causing the airbag 23 to expand and contact the user's neck, making the electrode sheet fit the skin better and further improving the massage effect.

[0049] Working principle: When the massager needs to be used for massage, the user separates the two adsorbed bodies 10. After the two bodies 10 are separated, the arc-shaped plates 16 on the two bodies 10 are inserted. Then, the user moves the two sliders 203 closer to each other, so that the docking rods 204 on the two sliders 203 are inserted into the docking grooves 205 for clamping. At this time, the massager is assembled. At the same time, the space formed between the two bodies 10 is the largest. At this time, the user puts the massager around the neck. The user can adjust the position of the body 10 on the arc-shaped plate 16 according to the condition of their own neck. When adjustment is needed, the staff only needs to push the two bodies 10 towards the neck. Along with the pushing of the body 10, the plug rod 212 can rise and fall repeatedly under the guidance of the inclined groove 172. When the massager fits the user's neck, stop pushing the body 10. During the pushing process of the body 10, when the arc-shaped plate 16 moves towards the inside of the arc-shaped chamber 12, the folding airbag 241 can be squeezed, causing the airbag 23 to expand, so that the massager can fit the user's neck, enabling the massager to massage the user regardless of the user's posture.

[0050] In order to more precisely adjust the distance between the two bodies 10, the positions of the two bodies 10 on the arc-shaped plate 16 can be controlled so that the positions of the electrode plates on a single body 10 can conform to the user's neck according to the user's needs. When the user adjusts, if the user adjusts the position of the right body 10, then the user presses the pressing rod 192 on the left arc-shaped plate 16. When the pressing rod 192 descends, the pressing rod 192 drives the pressing block 194 to squeeze the inclined surface 185 on the arc-shaped block 183, causing the arc-shaped block 183 to drive the blocking rod 184 to move between the inclined slot 172 and the slot 171. At this time, the insertion rod 212 can be changed from unidirectional movement to immovable. Then, at this time, the left insertion rod 212 cannot move, while the right insertion rod 212 can continue to move to adjust the position of the right body 10 on the right arc-shaped plate 16. Conversely, when adjusting the position of the left body 10 on the left arc-shaped plate 16, press the pressing rod 192 on the left arc-shaped plate 16 and push the right body 10.

[0051] When it is necessary to readjust the position of the body 10 on the arc-shaped plate 16, the staff first removes the massager from the neck and pushes the two bodies 10 to the last inclined slot 172 in the opposite direction, so that the insertion rod 212 moves to the top of the arc-shaped plate 16. At this time, the insertion rod 212 drives the second elastic piece 221 into the interior of the limit cavity 15, and the second spring 211 cannot drive the insertion rod 212 to descend. The user pulls the arc-shaped plate 16 outwards from the interior of the arc-shaped cavity 12. When the insertion rod 212 moves to the position of the first slot 171, the user presses the push plate 222. The push plate 222 drives the third elastic piece 224 to contract. The push plate 222 drives the anti-detachment strip 223 to squeeze the second elastic piece 221 into the interior of the sliding cavity 14, and the second spring 211 resumes to drive the insertion rod 212 to insert into the slot 171 to complete the locking, facilitating subsequent adjustment of the distance between the two bodies 10. When the user removes the thrust of the push plate 222, the third elastic piece 224 resumes to drive the push plate 222 to return to the initial position.

[0052] When it is necessary to store the massager, only need to pull the two sliders 203 in the opposite direction so that the docking rod 204 disengages from the interior of the through port 201. The user pulls the two bodies 10, so that after the two arc-shaped plates 16 are separated, the bodies 10 are flipped so that the magnetic pieces 25 on the two bodies 10 are adsorbed and fixed, facilitating subsequent storage and placement of the massager.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A portable multi-mode pain relief massager, characterized in that: include, A folding mechanism, comprising a body (10), wherein the number of the bodies (10) is two, and adjacent ends of the two bodies (10) are connected via a folding cable (11); The adjustment mechanism comprises an arc-shaped chamber (12), a first storage chamber (13), a sliding chamber (14) and a limiting chamber (15) provided on the body (10); an arc-shaped plate (16) is provided inside the arc-shaped chamber (12); a guiding portion (17), a blocking portion (18), a pressing portion (19) and a docking portion (20) are provided on the arc-shaped plate (16); a limiting portion (21) is provided inside the first storage chamber (13); and a locking portion (22) is provided on the limiting portion (21); The auxiliary mechanism comprises an air bag (23) on the machine body (10), and a pneumatic part (24) is arranged inside the arc-shaped chamber (12).

2. The portable multi-mode pain relief massager according to claim 1, characterized in that: The guide portion (17) comprises a slot (171), an inclined slot (172) and a first sliding slot (173) on the arc-shaped plate (16).

3. The portable multi-mode pain relief massager according to claim 2, characterized in that: The blocking portion (18) comprises a second slide groove (181) on the arc-shaped plate (16); the inner wall of the second slide groove (181) is connected to a first elastic sheet (182); one end of the first elastic sheet (182) is connected to an arc-shaped block (183); a blocking rod (184) is connected to the arc-shaped block (183); and an inclined surface (185) is provided on the arc-shaped block (183).

4. The portable multi-mode pain relief massager according to claim 3, characterized in that: The pressing portion (19) comprises a second storage cavity (191) on the arc-shaped plate (16), a pressing rod (192) and a first spring (193) are arranged inside the second storage cavity (191), and a pressing block (194) is fixedly sleeved on the side wall of the pressing rod (192).

5. The portable multi-mode pain relief massager according to claim 4, characterized in that: The docking portion (20) comprises a through opening (201) on the pressing rod (192), a third sliding groove (202) is provided on the arc-shaped plate (16), a sliding block (203) is provided inside the third sliding groove (202), and a docking rod (204) and a docking groove (205) are provided on the sliding block (203).

6. The portable multi-mode pain relief massager of claim 5, wherein: The limiting portion (21) comprises a second spring (211) inside the first storage cavity (13), and one end of the second spring (211) is connected to an insertion rod (212).

7. The portable multi-mode pain relief massager of claim 6, wherein: The locking portion (22) comprises a second spring piece (221) on the side wall of the insertion rod (212); a push plate (222) is provided on the machine body (10); one end of the push plate (222) extends into the interior of the limiting cavity (15) and is connected to an anti-dropping strip (223); and a third spring piece (224) is connected to the side wall of the push plate (222).

8. The portable multi-mode pain relief massager of claim 7, wherein: The pneumatic part (24) comprises a folded air bag (241) inside the arc-shaped chamber (12), the folded air bag being connected to an air supply pipe, and the air supply pipe and the air bag (23) being interconnected.

9. The portable multi-mode pain relief massager of claim 8, wherein: A magnetic sheet (25) is provided on the side wall of the machine body (10), and the folding cable (11) is located on a side adjacent to the magnetic sheet (25).

10. The portable multi-mode pain relief massager of claim 9, wherein: The number of the slots (171) and the number of the inclined grooves (172) are both multiple, and the inclined grooves (172) adjacent to the pressing rod (192) are connected to the outer surface of the arc plate (16).

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