Traditional Chinese medicine acupoint stimulation sleep improving device

Abstract

The invention relates to the technical field of medical treatment, and particularly discloses a traditional Chinese medicine acupoint stimulation sleep improving device which comprises a placing frame, a first power assembly is arranged on one side of the placing frame, a moving block is slidably connected to the placing frame through the first power assembly, a clamping plate is fixedly connected to the top end of the moving block, and a second motor drives a disc to rotate. A disc drives a plurality of stress columns to rotate around the circle center, so that meshing teeth in a kidney-shaped frame are intermittently pushed, the kidney-shaped frame reciprocates back and forth, a plurality of massage blocks are driven to move back and forth on the head of a patient for massage, a third motor drives a convex plate to rotate, and a transmission block drives a mounting plate to move. Therefore, it can be ensured that massage acts on the target acupuncture point more accurately, the treatment effect is improved, meanwhile, continuous pressure and stimulation generated by long-time massage on the same acupuncture point are avoided, the discomfort of the patient is reduced, and the overall comfort degree is improved.

Description

Technical Field

[0001] The invention relates to the field of medical technology, in particular to a device for improving sleep by stimulating acupoints in traditional Chinese medicine. Background Art

[0002] Insomnia is a common sleep disorder, which is manifested by symptoms such as difficulty falling asleep, poor sleep quality or early awakening. Long-term insomnia not only affects a person's mental state and daily life, but may also cause a series of health problems, such as cardiovascular disease, diabetes and depression. Therefore, improving sleep quality is crucial to maintaining human health. As a non-drug treatment method, Chinese medicine acupoint stimulation has received widespread attention and application in improving sleep in recent years. Generally, a massage pillow is used to massage the patient's head to stimulate the degree of the patient's head to achieve the purpose of improving the patient's sleep.

[0003] For example, a Chinese patent with publication number CN207590938U discloses a massage pillow, including a frame, a rotating shaft and a power device arranged in the frame. The middle part of the frame is concave, and protrusions are respectively provided at the left and right ends of the frame. The rotating shaft is installed on the two protrusions. The power device is used to drive the rotating shaft to rotate so that the rotating shaft can roll and massage the cervical vertebra of the human body.

[0004] The above-mentioned public patent can perform rolling massage on the human cervical spine, which greatly improves the massage stimulation intensity of the massage pillow. However, the massage pillow has some defects that need to be improved. Since the installation position of the massage structure is set to be fixed, this leads to the patient feeling continuous pressure and stimulation when massaging the same acupoint for a long time, which leads to discomfort. In addition, the massage method is single, which may affect the treatment effect and the patient's comfort. The massage pillow also has shortcomings in terms of breathability. Long-term use may cause stuffiness and discomfort due to lack of good air circulation. In addition, during the treatment process, the patient can easily fall asleep due to relaxation and comfort, but if the head is not properly fixed at this time, the massage effect may be affected due to changes in posture, and even cause unnecessary trouble. Summary of the invention

[0005] The purpose of the present invention is to provide a TCM acupoint stimulation device for improving sleep, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides a device for improving sleep through stimulation of traditional Chinese medicine acupoints, comprising a placement frame, a first power assembly is provided on one side of the placement frame, a moving block is slidably connected to the placement frame through the first power assembly, a clamping plate is fixedly connected to the top of the moving block, a head pad is fixedly connected to one side of the clamping plate, a broadcasting speaker is installed inside the head pad, a fixing plate is fixedly connected to one side of the placement frame, an air vent is provided inside the fixing plate, an exhaust fan is provided below the fixing plate in the placement frame, a second power assembly is provided on one side of the fixing plate, an assembly assembly is slidably connected to one side of the fixing plate through the second power assembly, one side of the assembly assembly is connected to the exhaust fan, a massage assembly is provided on the other side of the assembly assembly, a breathable pillow is fixedly connected to the placement frame above the massage assembly, an air guide hole is provided on one side of the placement frame, and the air guide hole is communicated with the air vent.

[0007] Furthermore, the first power assembly includes a first motor, the first motor is fixedly connected to one end of the placement rack, the output end of the first motor is fixedly connected to a first gear cone, one side of the first gear cone is meshingly connected to a second gear cone, one side of the second gear cone is fixedly connected to a shaft rod, one side of the shaft rod is fixedly connected to a bidirectional screw rod, one side of the shaft rod is fixedly connected to a bidirectional screw rod, one side of the moving block is threadedly connected to the bidirectional screw rod, the moving block is slidably connected to the placement rack, first sliding grooves are opened on both sides of the interior of the placement rack, the bidirectional screw rod and the shaft rod are both rotatably connected to the inside of the first sliding groove, and the moving block is slidably connected to the first sliding groove.

[0008] Furthermore, a fixed frame is fixedly connected to both sides above the fixed plate in the placement rack, a second slide groove is opened inside the fixed frame, a slide rod is fixedly connected inside the second slide groove, and one side of the assembly component is slidably connected to the second slide groove and to the slide rod.

[0009] Furthermore, the assembly component includes a guide block, which is slidably connected to the inside of the second slide groove, and the guide block is slidably connected to the slide rod, a connecting plate is fixedly connected between the two guide blocks, both sides of the bottom end of the guide block are fixedly connected to the first connecting rod, both sides of the top end of the guide block are fixedly connected to the second connecting rod, the bottom end of the first connecting rod is fixedly connected to the first assembly plate, the exhaust fan is fixedly connected to the assembly plate, the top end of the second connecting rod is fixedly connected to the second assembly plate, and the massage component is fixedly connected to the second assembly plate.

[0010] Furthermore, a third sliding groove is provided inside the fixing plate, and two third sliding grooves are provided, and the first connecting rod is slidably connected to the third sliding grooves.

[0011] Furthermore, the massage component includes a mounting plate, which is movably connected to the top of the second assembly plate, and the top of the mounting plate is fixedly connected to a massage block, and there are multiple massage blocks, the bottom end of the mounting plate is fixedly connected to a transmission block, and the transmission block is slidably connected to the second assembly plate, and one side of the bottom end of the second assembly plate is fixedly connected to a third motor, and the output end of the third motor is fixedly connected to a convex plate, and the bottom end of the transmission block is fixedly connected to a pulley, and one side of the convex plate is movably connected to the pulley.

[0012] Furthermore, springs are fixedly connected on both sides of the bottom end of the mounting plate, the bottom end of the spring is fixedly connected to the top end of the second assembly plate, the bottom end of the mounting plate is located on the inner side of the spring and is fixedly connected to a balance bar, and one side of the balance bar is slidably connected to the second assembly plate.

[0013] Furthermore, the second power assembly includes a second motor, which is fixedly connected to a fixed plate, an output end of the second motor is fixedly connected to a disc, a top end of the disc is fixedly connected to a plurality of force-bearing columns, an inner side of the connecting plate is fixedly connected to a waist-shaped frame, an inner side of the waist-shaped frame is fixedly connected to an engaging tooth, and an inner side of the waist-shaped frame is fixedly connected to a limiting block on one side of the engaging tooth.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] Firstly, in the present invention, a second motor is installed inside the placement frame, and the second motor is used to drive the disc to rotate, and the disc drives multiple force-bearing columns to rotate around the center of the circle, thereby intermittently pushing the occlusal teeth in the waist-shaped frame, so that the waist-shaped frame moves back and forth, thereby driving multiple massage blocks to move back and forth at the patient's head for massage, and the third motor drives the convex plate to rotate, so that the transmission block drives the mounting plate to move, so that the mounting plate drives the pressing module to intermittently knock on the patient's head, thereby ensuring that the massage acts on the target acupuncture points more accurately, improving the treatment effect, and at the same time, avoiding the continuous pressure and stimulation caused by long-term massage of the same acupuncture point, reducing the patient's discomfort, and improving the overall comfort.

[0016] Secondly, in the present invention, a fixing plate is installed inside the placement frame, a plurality of air holes are opened on the fixing plate, and an exhaust fan is installed below the fixing plate. The exhaust fan discharges the heat inside the massage pillow through the air guide holes. The exhaust fan also moves back and forth with the massage component under the action of the second power component, which improves the ventilation effect while massaging the area, thereby improving the massage effect. Therefore, the user can stay dry and comfortable during use, and can also avoid skin discomfort caused by long-term contact, further improving the practicality and comfort of the massage pillow.

[0017] Thirdly, in the present invention, after the patient's head is placed on the placement rack, the first motor drives the first gear cone to rotate, the first gear cone drives the second gear cone to rotate, the second gear cone drives the shaft rod to rotate, and the shaft rod drives the bidirectional screw rod to rotate, so that the bidirectional screw rod rotates in the first slide groove to drive the moving block to move, so that the moving block drives the clamping plate to approach the patient's head, and the patient's head is protected by a head pad, and sleep-aiding music is played through the broadcasting speaker to help sleep, thereby ensuring that the patient maintains a stable head posture while enjoying the massage, thereby maintaining the continuity and effectiveness of the massage, which not only helps to improve the treatment effect, but also avoids the patient's interruption of treatment due to posture changes during sleep, thereby enhancing the overall treatment experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention;

[0019] Figure 2 It is a schematic diagram of the internal structure of the placement rack in the present invention;

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at point A;

[0021] Figure 4 It is a schematic diagram of the bottom structure of the placement rack in the present invention;

[0022] Figure 5 It is a schematic diagram of the structure of the fixing plate in the present invention;

[0023] Figure 6 It is a schematic diagram of the assembly structure of the present invention;

[0024] Figure 7 It is a schematic diagram of the structure of the second power assembly in the present invention;

[0025] Figure 8 For the present invention Figure 6 Schematic diagram of the enlarged structure at B.

[0026] In the figure: 1, placement rack; 2, breathable pillow pad; 3, clamping plate; 4, head pad; 5, broadcasting speaker; 6, first power assembly; 61, first motor; 62, first gear cone; 63, second gear cone; 64, shaft; 65, two-way screw; 66, first slide; 7, moving block; 8, fixing plate; 9, air vent; 10, exhaust fan; 11, assembly assembly; 111, guide block; 112, connecting plate; 113, first connecting rod; 114, second connecting rod; 115, first assembly plate; 11 6. Second assembly plate; 12. Fixed frame; 13. Second slide groove; 14. Slide rod; 15. Second power assembly; 151. Second motor; 152. Disc; 153. Force column; 154. Engaging teeth; 155. Limit block; 156. Waist frame; 16. Third slide groove; 17. Massage assembly; 171. Mounting plate; 172. Massage block; 173. Transmission block; 174. Pulley; 175. Convex plate; 176. Third motor; 177. Spring; 178. Balance bar; 18. Air guide hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figure 1-Figure 8In an embodiment of the present invention, a device for improving sleep by stimulating acupoints of traditional Chinese medicine includes a placement rack 1, a first power assembly 6 is provided on one side of the placement rack 1, a moving block 7 is slidably connected to the placement rack 1 through the first power assembly 6, a clamping plate 3 is fixedly connected to the top of the moving block 7, a head pad 4 is fixedly connected to one side of the clamping plate 3, a broadcasting speaker 5 is installed inside the head pad 4, and the broadcasting speaker 5, as a prior art, can play sleep-aiding music, which plays an important role in improving sleep quality, a fixing plate 8 is fixedly connected to one side of the placement rack 1, an air vent 9 is provided inside the fixing plate 8, an exhaust fan 10 is provided below the fixing plate 8 in the placement rack 1, a second power assembly 15 is provided on one side of the fixing plate 8, an assembly assembly 11 is slidably connected to one side of the fixing plate 8 through the second power assembly 15, and one side of the assembly assembly 11 is connected to the exhaust fan 10 Next, a massage component 17 is provided on the other side of the assembly component 11, and a breathable pillow pad 2 is fixedly connected to the placement frame 1 above the massage component 17. The breathable pillow pad 2 is made of latex and has many tiny air holes 9 inside the latex. These holes are conducive to air circulation, so that the pillow will not feel stuffy when in use. At the same time, the elasticity of the latex can also ensure that the head is properly supported and reduce the heat accumulation caused by long-term compression. An air guide hole 18 is opened on one side of the placement frame 1, and the air guide hole 18 is connected with the air hole 9. Through the above improvements, the continuous pressure and stimulation caused by long-term massage of the same acupoint is avoided, the patient's discomfort is reduced, the overall comfort is improved, the user's comfort is improved, the user can stay dry and comfortable during use, and the skin discomfort caused by long-term contact can be avoided. Finally, the patient's head is fixed to ensure the smooth progress of the treatment process and improve the overall treatment experience.

[0029] See also Figure 3The first power assembly 6 includes a first motor 61, which is fixedly connected to one end of the placement rack 1, and the output end of the first motor 61 is fixedly connected to a first gear cone 62, one side of the first gear cone 62 is meshedly connected to a second gear cone 63, one side of the second gear cone 63 is fixedly connected to a shaft rod 64, one side of the shaft rod 64 is fixedly connected to a bidirectional screw rod 65, one side of the moving block 7 is threadedly connected to the bidirectional screw rod 65, and the moving block 7 is slidably connected to the placement rack 1, and both sides of the interior of the placement rack 1 are open. A first slide groove 66 is provided, and the bidirectional screw rod 65 and the shaft rod 64 are both rotatably connected to the inside of the first slide groove 66, and the moving block 7 is slidably connected to the first slide groove 66; by setting the first power component 6, the first motor 61 drives the first gear cone 62 to rotate, the first gear cone 62 drives the second gear cone 63 to rotate, and the second gear cone 63 drives the shaft rod 64 to rotate, thereby driving the bidirectional screw rod 65 to rotate, and then the moving block 7 slides under the action of the first slide groove 66, which can drive the clamping plate 3 to move toward the patient's head and fix the heads of different patients.

[0030] See also Figure 7 The placement rack 1 is fixedly connected with a fixed frame 12 on both sides above the fixed plate 8, a second slide groove 13 is opened inside the fixed frame 12, a slide rod 14 is fixedly connected inside the second slide groove 13, one side of the assembly component 11 is slidably connected to the second slide groove 13, and is slidably connected to the slide rod 14; by installing the fixed frame 12 in the placement rack 1, a second slide groove 13 is opened in the fixed frame 12, and the slide rod 14 is fixed inside, which is conducive to the assembly component 11 sliding inside the installation rack.

[0031] See also Figure 6 The assembly component 11 includes a guide block 111, which is slidably connected to the inside of the second slide groove 13, and the guide block 111 is slidably connected to the slide rod 14. A connecting plate 112 is fixedly connected between the two guide blocks 111. Both sides of the bottom end of the guide block 111 are fixedly connected to a first connecting rod 113, and both sides of the top end of the guide block 111 are fixedly connected to a second connecting rod 114. The bottom end of the first connecting rod 113 is fixedly connected to a first assembly plate 115. The exhaust fan 10 is fixedly connected to On the assembly plate, the top end of the second connecting rod 114 is fixedly connected to the second assembly plate 116, and the massage component 17 is fixedly connected to the second assembly plate 116; by setting the assembly component 11, when the guide block 111 slides, the guide block 111 drives the first connecting rod 113 and the second connecting rod 114 to move, the first connecting rod 113 drives the first assembly plate 115 to move the cooling fan, and the second connecting rod 114 drives the second assembly plate 116 to move the massage component 17, thereby achieving the effects of massaging and ventilating different positions of the patient's head.

[0032] See also Figure 5 A third sliding groove 16 is provided inside the fixed plate 8, and two third sliding grooves 16 are provided, and the first connecting rod 113 is slidably connected to the third sliding groove 16; by providing the third sliding groove 16, the first connecting rod 113 can slide on the fixed plate 8.

[0033] See also Figure 8 The massage assembly 17 includes a mounting plate 171, which is movably connected to the top of the second assembly plate 116. A massage block 172 is fixedly connected to the top of the mounting plate 171, and a plurality of massage blocks 172 are provided. A transmission block 173 is fixedly connected to the bottom end of the mounting plate 171, and the transmission block 173 is slidably connected to the second assembly plate 116. A third motor 176 is fixedly connected to one side of the bottom end of the second assembly plate 116, and a convex plate 175 is fixedly connected to the output end of the third motor 176. A pulley 174 is fixedly connected to the bottom end of the transmission block 173, and one side of the convex plate 175 is movably connected to the pulley 174. Springs 177 are fixedly connected to both sides of the bottom end of the mounting plate 171, and the bottom end of the spring 177 is slidably connected to the top of the second assembly plate 116. The bottom end of the mounting plate 171 is fixedly connected to the inner side of the spring 177 and is fixedly connected with a balance bar 178, and one side of the balance bar 178 is slidably connected to the second assembly plate 116; by setting the massage component 17, when the mounting block moves back and forth, the multiple massage blocks 172 on the mounting plate 171 can massage the patient's head. During the massage process, the third motor 176 is used to drive the convex plate 175 to rotate, and the convex plate 175 pushes the pulley 174. The pulley 174 can reduce the sliding resistance and facilitate the pushing of the transmission block 173, so that the transmission block 173 vibrates under the action of multiple springs 177, so that the pressing module knocks up and down on the massage part of the patient's head. During this process, the balance bar 178 keeps the mounting plate 171 stable to avoid large offsets, thereby facilitating the massage work of the module.

[0034] See also Figure 8The second power assembly 15 includes a second motor 151, which is fixedly connected to the fixed plate 8. The output end of the second motor 151 is fixedly connected to a disc 152, and the top of the disc 152 is fixedly connected to a plurality of force columns 153. The inner side of the connecting plate 112 is fixedly connected to a waist-shaped frame 156, and the inner side of the waist-shaped frame 156 is fixedly connected to an engaging tooth 154. The inner side of the waist-shaped frame 156 is located on one side of the engaging tooth 154 and is fixedly connected to a limiting block 155. By setting the second power assembly 15, the second motor 151 drives the disc 152 to rotate so that the plurality of force columns 153 rotate, and the force columns 153 push the engaging teeth 154, so that the waist-shaped frame 156 can move back and forth, so that the guide block 111 drives the assembly assembly 11 to move back and forth, and a limiting block 155 is set to limit the position of the force column 153 to avoid separation from the engaging tooth 154.

[0035] The working principle of the present invention is: the patient lies on the breathable pillow 2 on the placement frame 1, the first motor 61 drives the first gear cone 62 to rotate, the first gear cone 62 drives the second gear cone 63 to rotate, the second gear cone 63 drives the shaft rod 64 to rotate, the shaft rod 64 drives the bidirectional screw rod 65 to rotate, so that the bidirectional screw rod 65 rotates in the first slide groove 66 to drive the moving block 7 to move, so that the moving block 7 drives the clamping plate 3 to approach the patient's head, the head pad 4 is used to protect the patient's head, and the broadcasting speaker 5 plays sleep-aiding music to help sleep, ensuring that the patient's head maintains a stable posture while enjoying the massage, thereby maintaining the continuity and effectiveness of the massage. When performing the massage, the second motor 151 is used to drive the disc 152 to rotate, and the disc 152 drives multiple force-bearing columns 153 to rotate around the center of the circle, thereby intermittently pushing the occlusion in the waist frame 156 The teeth 154 cause the waist frame 156 to move back and forth, thereby driving the multiple massage blocks 172 to move back and forth at the patient's head for massage, and the third motor 176 drives the convex plate 175 to rotate, and the convex plate 175 pushes the pulley 174, so that the pulley 174 drives the transmission block 173 to move, and the transmission block 173 drives the mounting plate 171 to vibrate under the action of the spring 177, so that the mounting plate 171 drives the pressing module to intermittently knock on the patient's head, thereby improving the treatment effect, avoiding the continuous pressure and stimulation caused by long-term massage of the same acupoint, and reducing the patient's discomfort. During the movement of the massage block 172, the exhaust fan 10 moves back and forth inside the placement frame 1, and the heat is discharged through the air vents 9 of the fixing plate 8 through the air guide holes 18, so that the user can stay dry and comfortable during use and avoid skin discomfort caused by long-term contact.

Claims

1. A Chinese medicine acupoint stimulation device for improving sleep, characterized in that: The invention comprises a placing rack, a first power assembly is provided on one side of the placing rack, a moving block is slidably connected to the placing rack through the first power assembly, a clamping plate is fixedly connected to the top of the moving block, a head pad is fixedly connected to one side of the clamping plate, a broadcasting speaker is installed inside the head pad, a fixing plate is fixedly connected to one side of the inner part of the placing rack, an air vent is provided inside the fixing plate, an exhaust fan is provided below the fixing plate in the placing rack, a second power assembly is provided on one side of the fixing plate, an assembly assembly is slidably connected to one side of the fixing plate through the second power assembly, one side of the assembly assembly is connected to the exhaust fan, a massage assembly is provided on the other side of the assembly assembly, a breathable pillow is fixedly connected to the placing rack above the massage assembly, an air guide hole is provided on one side of the placing rack, and the air guide hole is communicated with the air vent.

2. A TCM acupoint stimulation device for improving sleep according to claim 1, characterized in that: The first power assembly includes a first motor, which is fixedly connected to one end of a placement rack, an output end of the first motor is fixedly connected to a first gear cone, one side of the first gear cone is meshingly connected to a second gear cone, one side of the second gear cone is fixedly connected to a shaft rod, one side of the shaft rod is fixedly connected to a bidirectional screw rod, one side of the moving block is threadedly connected to the bidirectional screw rod, and the moving block is slidably connected to the placement rack.

3. A TCM acupoint stimulation device for improving sleep according to claim 2, characterized in that: First slide grooves are provided on both sides of the interior of the placement rack, the bidirectional screw rod and the shaft rod are both rotatably connected inside the first slide grooves, and the moving block is slidably connected to the first slide grooves.

4. A TCM acupoint stimulation device for improving sleep according to claim 1, characterized in that: A fixed frame is fixedly connected to both sides of the placement rack above the fixed plate, a second slide groove is opened inside the fixed frame, a slide rod is fixedly connected inside the second slide groove, and one side of the assembly component is slidably connected to the second slide groove and to the slide rod.

5. A TCM acupoint stimulation device for improving sleep according to claim 4, characterized in that: The assembly component includes a guide block, which is slidably connected to the inside of the second slide groove, and the guide block is slidably connected to the slide rod, a connecting plate is fixedly connected between the two guide blocks, both sides of the bottom end of the guide block are fixedly connected to the first connecting rod, both sides of the top end of the guide block are fixedly connected to the second connecting rod, the bottom end of the first connecting rod is fixedly connected to the first assembly plate, the exhaust fan is fixedly connected to the assembly plate, the top end of the second connecting rod is fixedly connected to the second assembly plate, and the massage component is fixedly connected to the second assembly plate.

6. A TCM acupoint stimulation device for improving sleep according to claim 5, characterized in that: The fixing plate is provided with two third sliding grooves inside, and the first connecting rod is slidably connected with the third sliding grooves.

7. A TCM acupoint stimulation device for improving sleep according to claim 5, characterized in that: The massage component includes a mounting plate, which is movably connected to the top of the second assembly plate, a massage block is fixedly connected to the top of the mounting plate, and a plurality of massage blocks are provided, a transmission block is fixedly connected to the bottom end of the mounting plate, and the transmission block is slidably connected to the second assembly plate, a third motor is fixedly connected to one side of the bottom end of the second assembly plate, a convex plate is fixedly connected to the output end of the third motor, a pulley is fixedly connected to the bottom end of the transmission block, and one side of the convex plate is movably connected to the pulley.

8. A TCM acupoint stimulation device for improving sleep according to claim 7, characterized in that: Springs are fixedly connected to both sides of the bottom end of the mounting plate, the bottom end of the spring is fixedly connected to the top end of the second assembly plate, the bottom end of the mounting plate is located inside the spring and is fixedly connected to a balance bar, one side of the balance bar is slidably connected to the second assembly plate.

9. A TCM acupoint stimulation device for improving sleep according to claim 5, characterized in that: The second power assembly includes a second motor, which is fixedly connected to a fixed plate, an output end of the second motor is fixedly connected to a disc, a top end of the disc is fixedly connected to a plurality of force-bearing columns, an inner side of the connecting plate is fixedly connected to a waist-shaped frame, an inner side of the waist-shaped frame is fixedly connected to an engaging tooth, and an inner side of the waist-shaped frame is fixedly connected to a limiting block on one side of the engaging tooth.

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