CN114177581A

CN114177581A - Neck flexion and extension trainer

Info

Publication number: CN114177581A
Application number: CN202111487145.5A
Authority: CN
Inventors: 陈思丝; 吕亚薇; 杨景诒; 杨红春
Original assignee: Zhejiang University of Technology ZJUT
Current assignee: Zhejiang University of Technology ZJUT
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-03-15

Abstract

A neck flexion and extension trainer belongs to the technical field of fitness training equipment. The chest adjusting mechanism, the display mechanism and the damping output mechanism are arranged on the upright post mechanism, and the output end of the damping output mechanism is connected with the neck adjusting mechanism; the chest adjusting mechanism comprises a chest adjusting outer sleeve and a chest adjusting inner sleeve. The neck flexion and extension trainer can adjust the front-back distance of the baffle at the chest, thereby satisfying the requirement of users of different statures for neck flexion and extension training, improving the quality and efficiency of neck muscle group training, effectively avoiding the excessive load of neck muscle groups caused by excessive and repeated muscle training, avoiding the neck joint injury and inhibiting the occurrence and development of cervical spondylosis to a certain extent.

Description

Neck flexion and extension trainer

Technical Field

The invention belongs to the technical field of fitness training equipment, and particularly relates to a neck flexion and extension trainer.

Background

With the continuous development of the field of fitness training, people continuously and deeply know the fitness training and begin to pay attention to the training of small muscle groups, such as small muscle groups of neck, ankle and the like; the crowd who is engaged in mental work at present is numerous, at daily office worker in-process, faces the scene of computer work etc. and causes the cervical vertebra strain easily, and some special professions such as the pilot when driving the aircraft, because of the acceleration is too big, cause the injury to neck joint and muscle easily. Therefore, neck training is very necessary, the existing training equipment specially aiming at the neck is few, the neck training devices on the market are mostly used for medical rehabilitation, and the existing cervical vertebra strength training devices for body building have great burden and high danger coefficient.

Disclosure of Invention

In view of the above problems in the prior art, the present invention is directed to a neck flexion and extension training device with simple training method, safety and effectiveness.

The invention provides the following technical scheme:

a neck flexion and extension trainer comprises a chassis mechanism, wherein an upright post mechanism and a seat mechanism are arranged on the chassis mechanism, a chest adjusting mechanism, a display mechanism and a damping output mechanism are arranged on the upright post mechanism, and the output end of the damping output mechanism is connected with a neck adjusting mechanism;

the chest adjusting mechanism comprises a chest adjusting outer sleeve and a chest adjusting inner sleeve connected with the chest adjusting outer sleeve, the chest adjusting outer sleeve is fixedly mounted on the stand column mechanism, one end of the chest adjusting inner sleeve is in limited insertion connection with the chest adjusting outer sleeve through a bolt, and one side of the bolt is connected with a manual traction piece.

Preferably, the bolt is L type, and the bolt passes through the rotatable setting of third bolt and in the chest is adjusted the inner tube, and the vertical section and the manual piece of drawing of bolt are connected, are equipped with spacing post on the horizontal segment, all be equipped with a set of spacing hole corresponding with spacing post on the chest is adjusted inner tube, the chest is adjusted the outer tube, the diameter in spacing hole is greater than the diameter of spacing post.

Preferably, manual traction member includes the tab line and sets up the pull ring in the tab line outer end, sleeve pipe, chest are adjusted to the chest and are equipped with first mounting and second mounting in the overcoat pipe respectively, and first mounting, second mounting are passed respectively at the both ends of tab line, the outer tip of pull ring is located the chest and adjusts the sheathed tube outside, and the inner tip of tab line is connected with the vertical section of bolt, and the inner outside cover is equipped with the spring, and the spring is located between second mounting and the bolt, and the spring is the loudspeaker form, and its diameter that is located bolt one side is greater than the diameter of opposite side.

Preferably, the chest adjusting outer sleeve is connected with the chest adjusting inner sleeve through a gas spring, one end of the gas spring is fixedly mounted on the chest adjusting inner sleeve, and the other end of the gas spring is fixedly mounted on the chest adjusting outer sleeve.

Preferably, the other end of the chest adjusting inner sleeve is provided with a third sponge baffle.

Preferably, the lower part of the chest adjusting outer sleeve is provided with a second limit screw, the chest adjusting inner sleeve is provided with an elongated slot, the second limit screw is fixedly arranged on the chest adjusting outer sleeve, and the upper end of the second limit screw penetrates through the elongated slot on the chest adjusting inner sleeve.

Preferably, stand mechanism includes that the stand outer tube and the stand of fixed mounting on chassis mechanism are interior to overlap the pipe, and the interior sheathed tube lower extreme of stand is pegged graft at the stand outer tube, and the upper portion of stand outer tube is equipped with the interior nested piece of interior outer tube matched with in the stand, and the inside push rod that is equipped with of stand outer tube, the interior sleeve pipe setting of stand is equipped with stand nylon gasket on the push rod between push rod and the interior sleeve pipe of stand.

Preferably, the damping output mechanism comprises a hydraulic cylinder, the hydraulic cylinder is fixedly mounted at the upper end of the inner sleeve of the upright post, and the neck adjusting mechanism is connected with the output end of the hydraulic cylinder.

Preferably, neck adjustment mechanism is including the neck regulation outer tube and the neck regulation interior sleeve pipe of relative setting, and the neck is adjusted the outer tube and is managed in the neck regulation, and the neck is adjusted interior sleeve pipe and is L type structure, and the neck is adjusted the inside of interior sleeve pipe horizontal segment and is pegged graft at the neck and adjust the outer tube horizontal segment to through adjusting the spacing connection of bolt, install first sponge baffle, second sponge baffle on the vertical segment of outer tube and the neck regulation interior sleeve pipe vertical segment respectively, the below fixed mounting of neck regulation outer tube has first stop screw and swing arm, the swing arm is connected with the output of pneumatic cylinder.

Preferably, the end of the vertical section of the neck adjusting outer sleeve is provided with a plug, and the end of the horizontal section of the neck adjusting inner sleeve is coated with a neck sleeve nylon gasket.

By adopting the technology, compared with the prior art, the invention has the following beneficial effects:

1) the neck flexion and extension trainer can adjust the front and back distance of the baffle at the chest, thereby satisfying the requirement of users of different statures for neck flexion and extension training, improving the quality and efficiency of neck muscle group training, effectively avoiding the excessive load of neck muscle groups caused by excessive and repeated muscle training, avoiding the neck joint damage and inhibiting the occurrence and development of cervical spondylosis to a certain extent;

2) in the invention, the relative position between the chest adjusting outer sleeve and the chest adjusting inner sleeve is adjusted through the bolt and the manual traction piece, so that the front-back distance of the baffle at the chest is adjusted; the first fixing piece and the second fixing piece are arranged to provide guidance and support for pulling of the pull ring wire in the manual traction piece; the chest adjusting outer sleeve is connected with the chest adjusting inner sleeve through the arranged gas spring; the neck adjusting inner sleeve always keeps a relatively horizontal state through the arranged neck sleeve nylon gasket, so that the use and adjustment of the chest adjusting mechanism are facilitated;

3) according to the invention, the neck adjusting inner sleeve and the chest adjusting inner sleeve are respectively limited by the arranged first limiting screw and the second limiting screw, so that falling off is prevented when the adjustment movement is carried out;

4) the upright post mechanism of the neck flexion-extension trainer adopts a sleeving structure of the upright post outer sleeve and the upright post inner sleeve, and the matched sleeving between the upright post outer sleeve and the upright post inner sleeve can be realized through the arranged inner and outer nested pieces; the lifting of the inner sleeve of the upright post can be controlled by the arranged push rod, and a user can adjust the height of the inner sleeve of the upright post according to the size of the user; through the stand nylon gasket that sets up, can be at the interior sheathed tube lift adjustment in-process of stand for the interior sleeve pipe of stand keeps relative perpendicular at the stand overcoat intraductal.

Drawings

FIG. 1 is a schematic perspective view of a neck flexion and extension trainer in accordance with the present invention;

FIG. 2 is a schematic perspective view of the internal structure of the column mechanism according to the present invention;

FIG. 3 is a schematic view of the internal structure of the neck adjustment mechanism of the present invention;

FIG. 4 is a schematic bottom view of the neck adjustment mechanism of the present invention;

FIG. 5 is a schematic perspective view of the chest adjustment mechanism of the present invention;

FIG. 6 is a schematic view of the internal structure of the chest adjustment mechanism of the present invention;

FIG. 7 is a complementary view of the internal structure of the chest adjustment mechanism of the present invention;

FIG. 8 is a schematic bottom view of the chest adjustment mechanism of the present invention;

FIG. 9 is a schematic perspective view of a display mechanism according to the present invention;

FIG. 10 is a schematic perspective view of the damping output mechanism of the present invention;

FIG. 11 is a schematic perspective view of a chassis mechanism according to the present invention;

fig. 12 is a perspective view of the seat mechanism of the present invention.

In the figure: 101. A column outer sleeve; 102. an upright post inner sleeve; 103. a push rod; 104. a push rod fixing sheet; 105. a lifting button; 106. inner and outer nests; 107. a nylon gasket of the upright post; 201. a neck adjustment overtube; 202. a neck adjustment inner sleeve; 203. a plug; 204. a neck sleeve nylon gasket; 205. a first baffle plate connecting piece; 206. a second baffle connecting piece; 207. a first sponge baffle; 208. a second sponge baffle; 209. adjusting the bolt; 210. swinging arms; 211. a first limit screw; 301. a chest adjustment overtube; 302. a chest adjustment inner sleeve; 303. a first connecting member; 304. a third baffle connector; 305. a third sponge baffle; 306. a gas spring; 307. a bolt; 308. a first bolt; 309. a second bolt; 310. a spring; 311. a pull ring; 312. pulling a ring wire; 313. a first fixing member; 314. a second fixing member; 315. a third bolt; 316. a second limit screw; 317. a first annular fixing member; 318. a second annular fixed member; 319. a third annular fixing member; 320. a fourth annular fixture; 321. a fifth annular fixing member; 401. a display elbow support; 402. a display circular tube support; 403. a display spindle support; 404. a display; 405. a second connecting member; 501. a hydraulic cylinder; 601. a base plate; 602. a first foot pad; 603. a second foot pad; 604. a third foot pad; 605. a fourth footpad; 606. a master switch; 701. a first bracket; 702. a second bracket; 703. a support rail; 704. a cushion; 705. the backrest is connected with the elbow pipe; 706. a backrest connector; 707. a backrest.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

On the contrary, the invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, certain specific details are set forth in order to provide a better understanding of the present invention. It will be apparent to one skilled in the art that the present invention may be practiced without these specific details.

Example (b):

referring to fig. 1-12, a neck flexion and extension trainer comprises seven parts, namely a column mechanism 1, a neck adjusting mechanism 2, a chest adjusting mechanism 3, a display mechanism 4, a damping output mechanism 5, a chassis mechanism 6 and a seat mechanism 7.

Specifically, the upright post mechanism 1 is used for adjusting the height to adapt to users with different height and size, and the height of the neck adjusting mechanism, the height of the chest adjusting mechanism and the height of the display mechanism are ensured to be proper.

The column mechanism comprises a column outer sleeve 101, a column inner sleeve 102, a push rod 103, a push rod fixing plate 104, a lifting button 105, an inner nesting piece 106, and a column nylon gasket 107.

The upright post outer sleeve 101 is fixed on the chassis mechanism, the push rod 103 is fixed on the chassis mechanism 6, the upright post inner sleeve 102 is connected with the push rod 103, the upright post inner sleeve 102 can move up and down along with the push rod 103 above the push rod 103, the push rod 103 is controlled by the lifting button 105, and a user can adjust the height of the upright post inner sleeve 102 according to the size of the user. The upright column nylon gasket 107 is fixed below the outer side of the upright column inner sleeve 102, so that the upright column inner sleeve 102 is kept relatively vertical in the upright column outer sleeve 101, and the lifting is smoothly realized; the inner and outer nests 106 are fitted over the upper end of the column outer sleeve 101.

Specifically, the neck adjusting mechanism 2 is connected with the damping output mechanism 5 through the swing arm 210, the neck adjusting mechanism 2 is used for clamping the head, and the neck and the head swing back and forth so as to perform neck flexion and extension training.

The neck adjusting mechanism 2 comprises a neck adjusting outer sleeve 201, a neck adjusting inner sleeve 202, a plug 203, a neck sleeve nylon gasket 204, a first baffle connecting piece 205, a second baffle connecting piece 206, a first sponge baffle 207, a second sponge baffle 208, an adjusting bolt 209, a swing arm 210 and a first limiting screw 211.

The neck adjusting mechanism 2 is connected with the swing arm 210, and the neck adjusting inner sleeve 202 is arranged in the neck adjusting outer sleeve 201; the plug 203 is positioned on the neck adjusting outer sleeve 201; a neck sleeve nylon gasket 204 is fixed on the outer surface of the neck adjusting inner sleeve 202, so that the neck adjusting inner sleeve 202 is kept relatively horizontal; the adjusting bolt 209 is positioned above the neck adjusting outer sleeve 201, passes through the neck adjusting outer sleeve 201, and plays a role in fixing after adjustment by clamping a limiting hole on the neck adjusting inner sleeve 202; the first sponge baffle 207 is fixed at one end of the neck adjusting outer sleeve 201 through a first baffle connecting piece 205, and the second sponge baffle 208 is fixed at one end of the neck adjusting inner sleeve 202 through a second baffle connecting piece 206; the swing arm 210 is fixed below the neck adjusting outer sleeve 201 and connected with the damping output mechanism 5; the first limit screw 211 is fixed below the outer side of the neck adjusting outer sleeve 201, and is matched with a groove below the neck adjusting inner sleeve 202 to realize a limiting effect, so that the neck adjusting inner sleeve 202 is prevented from falling off in the adjusting process.

Preferably, eight limiting holes are arranged above the neck adjusting inner sleeve 202, the distance between the centers of the two limiting holes is 12mm, namely the adjusting gap is 12mm, and the overall adjusting distance of the neck adjusting mechanism 2 is 140mm-212 mm.

Specifically, the chest adjusting mechanism 3 is fixed on the upright post mechanism 1 and used for fixing the chest of a human body and preventing the upper half part of the body of the neck from swinging back and forth in the process of extending forwards and bending backwards to influence the training effect of neck muscles.

The chest adjusting mechanism 3 comprises a chest adjusting outer sleeve 301, a chest adjusting inner sleeve 302, a first connector 303, a third baffle connector 304, a third sponge baffle 305, a gas spring 306, an L-shaped bolt 307, a first bolt 308, a second bolt 309, a spring 310, a pull ring 311, a pull ring line 312, a first fixing member 313, a second fixing member 314, a third bolt 315, a second limit screw 316, a first annular fixing member 317, a second annular fixing member 318, a third annular fixing member 319, a fourth annular fixing member 320 and a fifth annular fixing member 321.

The chest adjusting outer sleeve 301 is fixed on the upright post mechanism 1 through a first connecting piece 303; the chest adjusting inner sleeve 302 is sleeved in the chest adjusting outer sleeve 301; a third sponge baffle 305 is fixed at one end of the chest adjusting inner sleeve 302 through a third baffle connector 304; the pull ring 311 is connected with a pull ring line 312, in the chest adjusting inner sleeve 302, one end of the pull ring line 312 is clamped at the end of the pull ring 311 at the inner side of the chest adjusting inner sleeve 302 through a first fixing part 313, the other end is clamped at the chest adjusting inner sleeve 302 through a second fixing part 314, and the other end of the pull ring line 312 is connected with a bolt 307; the bolt 307 is fixed on the inner side of the chest adjusting inner sleeve 302 through a third bolt 315, the bolt 307 is sleeved on the third bolt 315 and matched with a third annular fixing piece 319, the bolt 307 can rotate by taking the third bolt 315 as a shaft, and a limit column is arranged on the bolt 307; one end of a gas spring 306 is fixed on the inner side of the chest adjusting inner sleeve 302 through a first bolt 308, a first annular fixing piece 317 and a second annular fixing piece 318 are sleeved on a second bolt 309, the two sides of the gas spring 306 play a role in fixing the gas spring 306 and preventing the gas spring from randomly shaking, and the other end of the gas spring is matched with a fourth annular fixing piece 320 and a fifth annular fixing piece 321 through the second bolt 309 and is fixed on the inner side of the chest adjusting outer sleeve 301; the spring 310 is sleeved on the pull ring wire 312 and clamped between the second fixing piece 314 and the bolt 307, the spring 310 is in a trumpet shape, and the diameter of the spring on one side of the bolt 307 is larger than that on the other side; the second limit screw 316 is fixed at the lower part of the outer side of the chest adjusting outer sleeve 301 and is matched with the long groove at the lower part of the chest adjusting inner sleeve 302 to realize the limiting function, so that the chest adjusting inner sleeve 302 is prevented from falling off in the adjusting process.

During operation, one end of the gas spring 306 is fixed inside the chest adjusting inner sleeve 302, and the other end is fixed inside the chest adjusting outer sleeve 301, so that the chest adjusting inner sleeve and the chest adjusting outer sleeve are connected; the chest adjusting outer casing 301 and the chest adjusting inner casing 302 are both provided with a plurality of limiting holes, the diameter of the limiting holes is larger than that of the limiting columns on the bolt 307, the limiting columns on the bolt 307 can be inserted into the limiting holes in a rotating mode, a user can drive the pull ring line 312 by pulling the pull ring 311, one end of the pull ring line 312 is fixed on the bolt 307, the bolt 307 rotates around the third bolt 315, the bolt 307 is pulled out of the limiting holes, the user can push and pull the chest adjusting inner casing 302 to adjust the chest adjusting inner casing to a proper position, the pull ring 311 is loosened, the bolt 307 can be restored under the action of the spring 310, the bolt 307 is clamped into the limiting holes below the chest adjusting outer casing 301, and the effect of adjusting the position of the fixed position is achieved. The purpose of adjusting the chest adjusting inner sleeve 302 is to use the third sponge baffle 305 to clamp the upper half of the body, so as to prevent the chest of the body from bending back and forth along with the neck when the neck bending and stretching training is carried out, and the training effect is not influenced.

The diameter of the plug pin 307 is smaller than the aperture of the limiting hole, so that the limiting column arranged on the plug pin 307 can be rotatably placed in the limiting hole; after the limiting column is placed in the limiting hole, the limiting column is tightly attached to the inner wall of the limiting hole under the pressure action of the gas spring 306; when the relative position between the chest adjusting outer sleeve 301 and the chest adjusting inner sleeve 302 needs to be adjusted, the chest adjusting inner sleeve 302 is pulled by hand to separate the limiting columns from the inner walls of the corresponding limiting holes, then the pull ring 311 is pulled, the bolt 307 is rotated through the pull ring line 312, and the limiting columns are rotated from the corresponding limiting holes, so that the limiting can be released.

Preferably, eight limiting holes are formed below the chest adjusting outer sleeve 301, the distance between every two adjacent limiting holes is 15mm, and the front-back adjusting range of the chest adjusting mechanism 3 is 270mm-375 mm.

In particular, the display means 4 is used for the user to view the training program and to record training data. The training plan comprises free training and plan training, and the user can perform neck flexion and extension training along with the training plan.

The display mechanism 4 comprises a display elbow bracket 401, a display round pipe bracket 402, a display rotating shaft bracket 403, a display 404 and a second connecting piece 405.

The display elbow bracket 401 is fixed on the upright post mechanism 1 through a second connecting piece 405; the display circular tube bracket 402 is connected with the display bent tube bracket 401; the display rotating shaft bracket 403 is connected with the display circular tube bracket 402; the display 404 is fixed on the display pivot bracket 403. The display mechanism 4 may be used for the user to view the training program and record training data. The training plan comprises free training and plan training, and the user can perform neck flexion and extension training along with the training plan.

Specifically, the damping output mechanism 5 is used for providing resistance for neck flexion and extension training.

The damping output mechanism 5 includes a hydraulic cylinder 501.

The hydraulic cylinder 501 is fixed on the upright post mechanism 1 and is used for providing resistance for neck flexion and extension training.

In particular, the chassis mechanism 6 is used to carry seats and other mechanisms.

The chassis mechanism 6 includes a base plate 601, a first foot pad 602, a second foot pad 603, a third foot pad 604, a fourth foot pad 605, and a main switch 606.

The first foot pad 602, the second foot pad 603, the third foot pad 604 and the fourth foot pad 605 are arranged below the bottom plate 601, and the main switch 606 is arranged on the side surface of the bottom plate 601.

Specifically, the seat mechanism 7 is used for keeping stability during training of a user.

The seat mechanism 7 includes a first bracket 701, a second bracket 702, a bracket crossbar 703, a seat cushion 704, a backrest connecting elbow 705, a backrest connecting member 706, and a backrest 707.

The first support 701 is connected with the second support 702 through a support cross bar 703; the seat cushion 704 is fixed on the first bracket 701 and the second bracket 702; the backrest connecting elbow 705 is fixed on the bracket cross bar 703; the backrest 707 is connected to the backrest connection elbow 705 by a backrest connection 706.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.

Claims

1. A neck flexion and extension trainer comprises a chassis mechanism (6), wherein an upright post mechanism (1) and a seat mechanism (7) are arranged on the chassis mechanism (6), a chest adjusting mechanism (3), a display mechanism (4) and a damping output mechanism (5) are arranged on the upright post mechanism (1), and the output end of the damping output mechanism (5) is connected with a neck adjusting mechanism (2);

the method is characterized in that: the chest adjusting mechanism (3) comprises a chest adjusting outer sleeve (301) and a chest adjusting inner sleeve (302) connected with the chest adjusting outer sleeve (301), the chest adjusting outer sleeve (301) is fixedly mounted on the upright post mechanism (1), one end of the chest adjusting inner sleeve (302) is in limited insertion connection in the chest adjusting outer sleeve (301) through a bolt (307), and one side of the bolt (307) is connected with a manual traction piece.

2. The neck flexion and extension trainer as claimed in claim 1, wherein the plug pin (307) is L-shaped, the plug pin (307) is rotatably disposed in the chest adjustment inner sleeve (302) via a third bolt (315), the vertical section of the plug pin (307) is connected with a manual traction part, the horizontal section is provided with a limiting post, the chest adjustment inner sleeve (302) and the chest adjustment outer sleeve (301) are both provided with a set of limiting holes corresponding to the limiting posts, and the diameter of the limiting holes is greater than that of the limiting posts.

3. A neck flexion and extension training device according to claim 2, wherein the manual traction means comprises a pull ring wire (312) and a pull ring (311) arranged at the outer end of the pull ring wire (312), a first fixing piece (313) and a second fixing piece (314) are respectively arranged in the chest adjusting inner sleeve (302) and the chest adjusting outer sleeve (301), two ends of the pull ring line (312) respectively penetrate through the first fixing piece (313) and the second fixing piece (314), the outer end of the pull ring (311) is located on the outer side of the chest adjusting inner sleeve (302), the inner end of the pull ring line (312) is connected with a vertical section of the bolt (307), a spring (310) is sleeved on the outer side of the inner end of the pull ring line, the spring (310) is located between the second fixing piece (314) and the bolt (307), the spring (310) is horn-shaped, and the diameter of the spring on one side of the bolt (307) is larger than that of the spring on the other side of the bolt.

4. A neck flexion and extension training aid according to claim 3, characterized in that the chest adjustment outer sleeve (301) is connected to the chest adjustment inner sleeve (302) by a gas spring (306), one end of the gas spring (306) being fixedly mounted on the chest adjustment inner sleeve (302) and the other end being fixedly mounted on the chest adjustment outer sleeve (301).

5. A neck flexion and extension training aid according to claim 4, characterised in that the other end of the chest adjustment inner sleeve (302) is fitted with a third sponge baffle (305).

6. A neck flexion and extension training aid as claimed in claim 5, wherein the lower part of the chest adjustment outer sleeve (301) is provided with a second limit screw (316), the chest adjustment inner sleeve (302) is provided with an elongated slot, the second limit screw (316) is fixedly mounted on the chest adjustment outer sleeve (301), and the upper end of the second limit screw (316) passes through the elongated slot of the chest adjustment inner sleeve (302).

7. The neck flexion and extension trainer according to claim 1 or 6, characterized in that the upright post mechanism (1) comprises an upright post outer sleeve (101) and an upright post inner sleeve (102) which are fixedly mounted on the chassis mechanism (6), the lower end of the upright post inner sleeve (102) is inserted into the upright post outer sleeve (101), an inner and outer nested part (106) matched with the upright post inner sleeve (102) is arranged at the upper part of the upright post outer sleeve (101), a push rod (103) is arranged inside the upright post outer sleeve (101), the upright post inner sleeve (102) is arranged on the push rod (103), and an upright post nylon gasket (107) is arranged between the push rod (103) and the upright post inner sleeve (102).

8. The neck flexion and extension trainer according to claim 7, wherein the damping output mechanism (5) comprises a hydraulic cylinder (501), the hydraulic cylinder (501) is fixedly arranged at the upper end of the inner sleeve (102) of the upright post, and the neck adjusting mechanism (2) is connected with the output end of the hydraulic cylinder (501).

9. The neck flexion and extension trainer according to claim 8, wherein the neck adjusting mechanism (2) comprises a neck adjusting outer sleeve (201) and a neck adjusting inner sleeve (202) which are oppositely arranged, the neck adjusting outer sleeve (201) and the neck adjusting inner sleeve (202) are both L-shaped structures, the horizontal section of the neck adjusting inner sleeve (202) is inserted inside the horizontal section of the neck adjusting outer sleeve (201), and is connected in a limiting way through an adjusting bolt (209), a first sponge baffle (207) and a second sponge baffle (208) are respectively arranged on the vertical section of the neck adjusting outer sleeve (201) and the vertical section of the neck adjusting inner sleeve (202), the lower part of the neck adjusting outer sleeve (201) is fixedly provided with a first limit screw (211) and a swing arm (210), and the swing arm (210) is connected with the output end of the hydraulic cylinder (501).

10. The neck flexion and extension training aid as claimed in claim 9, wherein the end of the vertical section of the neck adjustment outer sleeve (201) is provided with a plug (203), and the end of the horizontal section of the neck adjustment inner sleeve (202) is covered with a neck sleeve nylon gasket (204).