CN209075071U - A kind of vertebral column treatment couch - Google Patents

Abstract

The utility model relates to a kind of therapeutic bed more particularly to a kind of vertebral column treatment couchs.The technical problem to be solved by the present invention is to provide the decompression treatments that one kind can do lumbar vertebrae and cervical vertebra, and will depressurize the vertebral column treatment couch of tractive force and required angle applied to a certain specific centrum.In order to solve the above-mentioned technical problem, the utility model provides such a vertebral column treatment couch, includes pedestal, support base, support plate, chest back cushion, head cushion, the first fixed plate, the first sliding rail, abdomen back cushion, leg back cushion, the second fixed plate, the first swing mechanism, the second sliding rail, the first regulating mechanism, the second swing mechanism, the 4th connecting rod, third swing mechanism, the 5th connecting rod and the second regulating mechanism；Support base is fixed among base top.The utility model has reached the decompression treatment that can do lumbar vertebrae and cervical vertebra, and will depressurize the effect of tractive force and required angle applied to a certain specific centrum.

Description

A kind of vertebral column treatment couch

Technical field

The utility model relates to a kind of therapeutic bed more particularly to a kind of vertebral column treatment couchs.

Background technique

Current therapeutic bed or traction table can only generally make the drawing of horizontal plane, and tractive force cannot be concentrated in single centrum, Decompression treatment can not be done, active force is distributed evenly on all centrums in trailed region, no matter therefore strong Identical tractive force is all born at each position of centrum that lesion still occurs for the centrum of health, and therapeutic effect is undesirable.

Therefore it needs to research and develop a kind of decompression treatment that can do lumbar vertebrae and cervical vertebra, and will decompression tractive force and required angle application In the vertebral column treatment couch of a certain specific centrum.

Utility model content

(1) technical problems to be solved

The utility model can only make the drawing of horizontal plane to overcome current therapeutic bed generally, cannot concentrate tractive force in The shortcomings that single centrum, the technical problem to be solved by the present invention is to provide one kind can do the decompression treatment of lumbar vertebrae and cervical vertebra, And the vertebral column treatment couch of tractive force and required angle applied to a certain specific centrum will be depressurized.

(2) technical solution

In order to solve the above-mentioned technical problem, the utility model provides such a vertebral column treatment couch, includes pedestal, branch Support seat, support plate, chest back cushion, head cushion, the first fixed plate, the first sliding rail, abdomen back cushion, leg back cushion, second are fixed Plate, the first swing mechanism, the second sliding rail, the first regulating mechanism, the second swing mechanism, the 4th connecting rod, third swing mechanism, Five connecting rods and the second regulating mechanism；Support base is fixed among base top, and support plate is fixed in support base side；Chest leans on Pad and support plate top are hinged, and are sequentially connected with the third swing mechanism for being fixed in support plate；First fixed plate is fixed in branch Side of the fagging far from support base, the second fixed plate are fixed in side of the support base far from support plate, and the first fixed plate, second are consolidated The first swing mechanism is connected on fixed board, head cushion, abdomen back cushion are respectively and fixedly connected at the top of corresponding first swing mechanism； First sliding rail, the second sliding rail are fixed in the first swing mechanism output end, and the first sliding rail is located at below head cushion, and second is sliding Rail is located at below abdomen back cushion；End of the 4th connecting rod one end with the second sliding rail far from support base is hinged, the other end and abdomen End of the back cushion far from support base is hinged；End of the 5th connecting rod one end with the first sliding rail far from support plate is hinged, the other end End with head cushion far from support plate is hinged；First sliding rail, the second sliding rail bottom are connected with the first regulating mechanism, and with The transmission connection of first swing mechanism；It is connected with the second swing mechanism among head cushion, abdomen back cushion bottom, and is put with first The transmission connection of motivation structure output end；Second regulating mechanism is fixed in end of the abdomen back cushion far from support base, and leg back cushion is affixed In the second regulating mechanism output end.

Preferably, the first swing mechanism includes first bearing seat, first rotating shaft, first connecting rod, the first connecting plate, folder Set, third fixed plate, the first clamping bar, second bearing seat and the second shaft；First fixed plate, the second fixed plate bottom are embedded with One bearing block；First rotating shaft and first bearing seat are pivotally connected, and first rotating shaft runs through first bearing seat；Two before and after first rotating shaft top Side is connected with first connecting rod, and the first connecting plate and first connecting rod are affixed, and head cushion, abdomen back cushion are fixed in correspondence The first connecting plate at the top of；Collet is fixed in first bearing seat bottom, for clamping first rotating shaft；Third fixed plate is fixed in Two fixed plate bottoms, two first clamping bars are spirally connected with third fixed plate front and rear sides, for clamping collet；Second bearing seat is fixed in First rotating shaft bottom, the second shaft and second bearing seat are pivotally connected, and the first sliding rail, the second sliding rail are respectively and fixedly connected in corresponding second turn In the middle part of axis, and the second shaft and the second swing mechanism are sequentially connected.

Preferably, the first regulating mechanism includes 3rd bearing seat, fourth bearing seat, screw rod, sliding block, nut, the second company Extension bar, the first elastic component and turning handle；First sliding rail, the second sliding rail bottom are connected with 3rd bearing close to the end of support base Seat, the first sliding rail, the second end of the sliding rail bottom far from support base are connected with portion's fourth bearing seat；Screw rod one end and 3rd bearing Seat pivot joint, the other end and fourth bearing seat are pivotally connected, and affixed through fourth bearing seat and turning handle；Nut is spirally connected with screw rod, and logical Sliding block is crossed to be slidably connected with the second sliding rail；Nut front and rear sides are connected with the second connecting rod, and the second connecting rod is connect with first It is connected between bar by the first elastic component.

Preferably, the second swing mechanism includes inserted link, fixed block, the second connecting plate, the second clamping bar and third connecting rod； Inserted link is fixed in the second shaft front end, is connected with fixed block among head cushion, abdomen back cushion bottom, and be provided on fixed block For the perforative jack of inserted link；Head cushion, abdomen back cushion bottom front and rear sides equal two are connected with the second connecting plate, and about fixation Block is symmetrical；Second clamping bar is spirally connected with the second connecting plate, for fixing inserted link.

Preferably, third swing mechanism includes strut, the second elastic component and bar；Strut is fixed in chest back cushion bottom Centre, and its bottom is connect by two second elastic components with support plate end；Bar runs through support plate front and rear sides, for fixing Strut.

Preferably, the second regulating mechanism includes the 6th connecting rod, guide sleeve, elevating lever and fastening bolt；6th connecting rod It is connect with abdomen back cushion basal sliding, guide sleeve is fixed in the 6th connection boom end, and elevating lever is slidably connected with guide sleeve, leg back cushion It is fixed at the top of elevating lever；Fastening bolt is spirally connected with guide sleeve side, for fixing elevating lever.

(3) beneficial effect

Each back cushion of the utility model can be acted respectively as needed, be not only plane earth drawing such as front, rear, left and right angle Flat pendulum, can also rotate left and right, and do under regulation amplitude the continuous movement bent and stretched up and down, the decompression of lumbar vertebrae and cervical vertebra is provided Treatment, and add fixed point of the external force as object, tractive force can more applied on certain single centrum, it is easy to operate, Therapeutic effect is significant.

Detailed description of the invention

Fig. 1 is the schematic view of the front view of the utility model.

Fig. 2 is the schematic view of the front view of the first swing mechanism of the utility model.

Fig. 3 is the right side structural representation of the first swing mechanism of the utility model.

Fig. 4 is the schematic view of the front view of the first regulating mechanism of the utility model.

Fig. 5 is the right side structural representation of the first regulating mechanism of the utility model.

Fig. 6 is the schematic view of the front view of the second swing mechanism of the utility model.

Fig. 7 is the right side structural representation of the second swing mechanism of the utility model.

Fig. 8 is the schematic view of the front view of the utility model third swing mechanism.

Fig. 9 is the overlooking structure diagram of the utility model third swing mechanism.

Figure 10 is the schematic view of the front view of the second regulating mechanism of the utility model.

The label in accompanying drawing is: 1- pedestal, 2- support base, 3- support plate, 4- chest back cushion, 5- head cushion, 6- first Fixed plate, the first sliding rail of 7-, 8- abdomen back cushion, the leg 9- back cushion, the second fixed plate of 10-, the first swing mechanism of 11-, 111- One bearing block, 112- first rotating shaft, 113- first connecting rod, the first connecting plate of 114-, 115- collet, 116- third fixed plate, The first clamping bar of 117-, 118- second bearing seat, the second shaft of 119-, the second sliding rail of 12-, the first regulating mechanism of 13-, 131- third Bearing block, 132- fourth bearing seat, 133- screw rod, 134- sliding block, 135- nut, the second connecting rod of 136-, the first elasticity of 137- Part, 138- turning handle, the second swing mechanism of 14-, 141- inserted link, 142- fixed block, the second connecting plate of 143-, the second clamping bar of 144-, 145- jack, 146- third connecting rod, the 4th connecting rod of 15-, 16- third swing mechanism, 161- strut, the second elasticity of 162- Part, 163- bar, the 5th connecting rod of 17-, the second regulating mechanism of 18-, the 6th connecting rod of 181-, 182- guide sleeve, 183- elevating lever, 184- fastening bolt.

Specific embodiment

The utility model is further described with reference to the accompanying drawings and examples.

Embodiment 1

A kind of vertebral column treatment couch includes as Figure 1-10 shows pedestal 1, support base 2, support plate 3, chest back cushion 4, head Portion's back cushion 5, the first fixed plate 6, the first sliding rail 7, abdomen back cushion 8, leg back cushion 9, the second fixed plate 10, the first swing mechanism 11, the second sliding rail 12, the first regulating mechanism 13, the second swing mechanism 14, the 4th connecting rod 15, third swing mechanism the 16, the 5th Connecting rod 17 and the second regulating mechanism 18；Support base 2 is fixed in 1 top center of pedestal, and support plate 3 is fixed in 2 side of support base； Chest back cushion 4 and 3 top of support plate are hinged, and are sequentially connected with the third swing mechanism 16 for being fixed in support plate 3；First is fixed Plate 6 is fixed in side of the support plate 3 far from support base 2, and the second fixed plate 10 is fixed in side of the support base 2 far from support plate 3, The first swing mechanism 11 is connected in first fixed plate 6, the second fixed plate 10, head cushion 5, abdomen back cushion 8 are respectively and fixedly connected with In corresponding first swing mechanism, 11 top；First sliding rail 7, the second sliding rail 12 are fixed in 11 output end of the first swing mechanism, And first sliding rail 7 be located at the lower section of head cushion 5, the second sliding rail 12 is located at below abdomen back cushion 8；4th connecting rod, 15 one end and the Two ends of the sliding rail 12 far from support base 2 are hinged, and end of the other end with abdomen back cushion 8 far from support base 2 is hinged；5th connection 17 one end of bar and the first end of the sliding rail 7 far from support plate 3 are hinged, and the other end and head cushion 5 are cut with scissors far from the end of support plate 3 It connects；First sliding rail 7,12 bottom of the second sliding rail are connected with the first regulating mechanism 13, and are sequentially connected with the first swing mechanism 11； It is connected with the second swing mechanism 14 among head cushion 5,8 bottom of abdomen back cushion, and is passed with 11 output end of the first swing mechanism Dynamic connection；Second regulating mechanism 18 is fixed in end of the abdomen back cushion 8 far from support base 2, and leg back cushion 9 is fixed in the second adjusting 18 output end of mechanism.

When needing to carry out spinal treatment to patient, patient is allowed to lie prone in therapeutic bed first, when patient's chest is less comfort When, third swing mechanism 16 is opened, chest back cushion 4 can mitigate patient's chest not under the compressing of patient body weight to lower swing Comfort；When needing to stretch patient's neck vertebra, corresponding second swing mechanism 14 is opened, head can be swung up and down and leaned on Pad 5 can carry out stretching treatment to patient's neck vertebra；When needing to stretch patient's lumbar spine, the second pendulum is opened Motivation structure 14, can swing up and down abdomen back cushion 8 and leg back cushion 9, carry out stretching treatment to patient's lumbar spine；When needs pair When patient's neck vertebra is corrected, open corresponding first swing mechanism 11, can horizontal hunting head cushion 5, to patient Cervical spine carries out corrective therapy；When needing to correct patient's lumbar spine, corresponding first swing mechanism 11 is opened, Can horizontal hunting abdomen back cushion 8 and leg back cushion 9, to patient's lumbar spine carry out corrective therapy；First regulating mechanism 13 can Adjust the first swing mechanism 11 and the second swing mechanism 14 and swing tension and amplitude, can for different extents patient into Row treatment, improves the effect of spinal treatment；It can adjust the position of leg back cushion 9, by the second regulating mechanism 18 to adapt to not It is more humanized with the patient of height.

Further, the first swing mechanism 11 includes first bearing seat 111, first rotating shaft 112, first connecting rod 113, One connecting plate 114, collet 115, third fixed plate 116, the first clamping bar 117, second bearing seat 118 and the second shaft 119；First Fixed plate 6,10 bottom of the second fixed plate are embedded with first bearing seat 111；First rotating shaft 112 and first bearing seat 111 are pivotally connected, and First rotating shaft 112 runs through first bearing seat 111；112 top front and rear sides of first rotating shaft are connected with first connecting rod 113, the One connecting plate 114 and first connecting rod 113 are affixed, and head cushion 5, abdomen back cushion 8 are fixed in corresponding first connecting plate 114 Top；Collet 115 is fixed in 111 bottom of first bearing seat, for clamping first rotating shaft 112；Third fixed plate 116 is fixed in Two fixed plates, 10 bottom, two first clamping bars 117 are spirally connected with 116 front and rear sides of third fixed plate, for clamping collet 115；Second Bearing block 118 is fixed in 112 bottom of first rotating shaft, and the second shaft 119 is pivotally connected with second bearing seat 118, the first sliding rail 7, second Sliding rail 12 is respectively and fixedly connected in corresponding second shaft, 119 middle part, and the second shaft 119 and the second swing mechanism 14 are sequentially connected； When needing to carry out corrective therapy to patient's neck vertebra or lumbar spine, the first clamping bar 117 is unscrewed, it can be by collet 115 It opens, it is made no longer to clamp first rotating shaft 112, head cushion 5 or abdomen can be driven by rotating first rotating shaft 112 at this time 8 horizontal hunting of back cushion carries out corrective therapy to patient's neck vertebra or lumbar spine；After opening the second swing mechanism 14, the Two shafts 119 can be rotated, and so swing up and down head cushion 5 or abdomen back cushion 8, to patient's neck vertebra or lumbar spine into Row stretches treatment.

Further, the first regulating mechanism 13 includes 3rd bearing seat 131, fourth bearing seat 132, screw rod 133, sliding block 134, nut 135, the second connecting rod 136, the first elastic component 137 and turning handle 138；First sliding rail 7,12 bottom of the second sliding rail are close The end of support base 2 is connected with 3rd bearing seat 131, and the first sliding rail 7, end of 12 bottom of the second sliding rail far from support base 2 are equal It is connected with portion's fourth bearing seat 132；133 one end of screw rod and 3rd bearing seat 131 are pivotally connected, the other end and 132 pivot of fourth bearing seat It connects, and affixed through fourth bearing seat 132 and turning handle 138；Nut 135 is spirally connected with screw rod 133, and passes through sliding block 134 and second Sliding rail 12 is slidably connected；135 front and rear sides of nut are connected with the second connecting rod 136, the second connecting rod 136 and first connecting rod It is connected between 113 by the first elastic component 137；When needing to adjust 14 amplitude of fluctuation of the first swing mechanism 11 and the second swing mechanism When, rotation turning handle 138 drives screw rod 133 to rotate, and nut 135 can be driven by sliding block 134, and the left and right on the second sliding rail 12 is slided It is dynamic, the tension of the first elastic component 137 between first connecting rod 113 and the second connecting rod 136 is adjusted, that is, can reach the first pendulum of adjustment The effect of 14 amplitude of fluctuation of motivation structure 11 and the second swing mechanism.

Further, the second swing mechanism 14 includes inserted link 141, fixed block 142, the second connecting plate 143, the second clamping bar 144 and third connecting rod 146；Inserted link 141 is fixed in 119 front end of the second shaft, and head cushion 5,8 bottom of abdomen back cushion centre are It is connected with fixed block 142, and is provided on fixed block 142 for the perforative jack 145 of inserted link 141；Head cushion 5,8 bottom of abdomen back cushion Portion front and rear sides equal two are connected with the second connecting plate 143, and symmetrical about fixed block 142；Second clamping bar 144 and second connects Fishplate bar 143 is spirally connected, for fixing inserted link 141；When needing to carry out patient's neck vertebra or lumbar spine to stretch treatment, unscrew Second clamping bar 144 makes it no longer clamp inserted link 141, and the second shaft 119 can be rotated, and can swing up and down head cushion 5 at this time Or abdomen back cushion 8, achieve the effect that patient's neck vertebra or lumbar spine are carried out to stretch treatment.

Further, third swing mechanism 16 includes strut 161, the second elastic component 162 and bar 163；Strut 161 is affixed Among 4 bottom of chest back cushion, and its bottom is connect by two second elastic components 162 with 3 end of support plate；Bar 163 runs through 3 front and rear sides of support plate, for fixing strut 161；When patient's chest is less comfort, rotate bar 163, make its no longer with branch Bar 161 contacts, and at this time under the action of the second elastic component 162, chest back cushion 4 can drive strut 161 to be put to lower swing It is dynamic, mitigate the discomfort of patient's chest；When needing to fix chest back cushion 4, rotation bar 163 is connect to it with strut 161 Touching, strut 161 not can be carried out swing at this time, can limit the swing of chest back cushion 4.

Further, the second regulating mechanism 18 includes the 6th connecting rod 181, guide sleeve 182, elevating lever 183 and fastening bolt 184；6th connecting rod 181 is connect with 8 basal sliding of abdomen back cushion, and guide sleeve 182 is fixed in 181 end of the 6th connecting rod, lifting Bar 183 is slidably connected with guide sleeve 182, and leg back cushion 9 is fixed in 183 top of elevating lever；Fastening bolt 184 and 182 side of guide sleeve It is spirally connected, for fixing elevating lever 183；When needing to adjust the horizontal position of leg back cushion 9, by pulling the 6th connecting rod 181 It can be adjusted；When needing to adjust the vertical position of leg back cushion 9, unscrew fastening bolt 184, elevating lever can be pulled 183183 slide in guide sleeve 182, achieve the effect that adjust 9 vertical position of leg back cushion, after adjusting to suitable position, tighten Fastening bolt 184 can fixed leg back cushion 9.

Preferred embodiments of the present invention above described embodiment only expresses, the description thereof is more specific and detailed, But it should not be understood as limiting the scope of the patent of the utility model.It should be pointed out that for the common of this field For technical staff, without departing from the inventive concept of the premise, several deformations can also be made, improves and substitutes, these are all Belong to the protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (6)

1. a kind of vertebral column treatment couch, which is characterized in that include pedestal (1), support base (2), support plate (3), chest back cushion (4), head cushion (5), the first fixed plate (6), the first sliding rail (7), abdomen back cushion (8), leg back cushion (9), the second fixed plate (10), the first swing mechanism (11), the second sliding rail (12), the first regulating mechanism (13), the second swing mechanism (14), the 4th connection Bar (15), third swing mechanism (16), the 5th connecting rod (17) and the second regulating mechanism (18)；Support base (2) is fixed in pedestal (1) top center, support plate (3) are fixed in support base (2) side；It is hinged at the top of chest back cushion (4) and support plate (3), and with It is fixed in third swing mechanism (16) transmission connection of support plate (3)；First fixed plate (6) is fixed in support plate (3) far from branch Support seat (2) side, the second fixed plate (10) be fixed in support base (2) far from support plate (3) side, the first fixed plate (6), It is connected in second fixed plate (10) the first swing mechanism (11), head cushion (5), abdomen back cushion (8) are respectively and fixedly connected in right At the top of the first swing mechanism (11) answered；First sliding rail (7), the second sliding rail (12) are fixed in the first swing mechanism (11) output End, and the first sliding rail (7) is located at below head cushion (5), the second sliding rail (12) is located at below abdomen back cushion (8)；4th connection End of bar (15) one end with the second sliding rail (12) far from support base (2) is hinged, and the other end and abdomen back cushion (8) bottom are far from branch The end for supportting seat (2) is hinged；End of 5th connecting rod (17) one end with the first sliding rail (7) far from support plate (3) is hinged, another Hold the end with head cushion (5) bottom far from support plate (3) hinged；First sliding rail (7), the second sliding rail (12) bottom are affixed Have the first regulating mechanism (13), and is sequentially connected with the first swing mechanism (11)；In head cushion (5), abdomen back cushion (8) bottom Between be connected with the second swing mechanism (14), and with the first swing mechanism (11) output end be sequentially connected；Second regulating mechanism (18) it is fixed in the end of abdomen back cushion (8) far from support base (2), it is defeated that leg back cushion (9) is fixed in the second regulating mechanism (18) Outlet.

2. a kind of vertebral column treatment couch according to claim 1, which is characterized in that the first swing mechanism (11) includes first Bearing block (111), first rotating shaft (112), first connecting rod (113), the first connecting plate (114), collet (115), third are fixed Plate (116), the first clamping bar (117), second bearing seat (118) and the second shaft (119)；First fixed plate (6), the second fixed plate (10) bottom is embedded with first bearing seat (111)；First rotating shaft (112) and first bearing seat (111) are pivotally connected, and first rotating shaft (112) run through first bearing seat (111)；First rotating shaft (112) top front and rear sides are connected with first connecting rod (113), the One connecting plate (114) and first connecting rod (113) are affixed, and head cushion (5), abdomen back cushion (8) are fixed in corresponding first At the top of connecting plate (114)；Collet (115) is fixed in first bearing seat (111) bottom, for clamping first rotating shaft (112)；Third Fixed plate (116) is fixed in the second fixed plate (10) bottom, two first clamping bars (117) and third fixed plate (116) front and rear sides It is spirally connected, for clamping collet (115)；Second bearing seat (118) is fixed in first rotating shaft (112) bottom, the second shaft (119) with Second bearing seat (118) pivot joint, the first sliding rail (7), the second sliding rail (12) are respectively and fixedly connected in corresponding second shaft (119) Portion, and the second shaft (119) and the second swing mechanism (14) are sequentially connected.

3. a kind of vertebral column treatment couch according to claim 2, which is characterized in that the first regulating mechanism (13) includes third Bearing block (131), fourth bearing seat (132), screw rod (133), sliding block (134), nut (135), the second connecting rod (136), One elastic component (137) and turning handle (138)；First sliding rail (7), the second sliding rail (12) bottom are solid close to the end of support base (2) It is connected to 3rd bearing seat (131), the first sliding rail (7), the second sliding rail (12) bottom are connected with portion far from the end of support base (2) Four bearing blocks (132)；Screw rod (133) one end and 3rd bearing seat (131) are pivotally connected, and the other end and fourth bearing seat (132) are pivotally connected, And it is affixed through fourth bearing seat (132) and turning handle (138)；Nut (135) is spirally connected with screw rod (133), and passes through sliding block (134) It is slidably connected with the second sliding rail (12)；Nut (135) front and rear sides are connected with the second connecting rod (136), the second connecting rod (136) it is connect between first connecting rod (113) by the first elastic component (137).

4. a kind of vertebral column treatment couch according to claim 3, which is characterized in that the second swing mechanism (14) includes inserted link (141), fixed block (142), the second connecting plate (143), the second clamping bar (144) and third connecting rod (146)；Inserted link (141) is solid It is connected to the second shaft (119) front end, is connected with fixed block (142) among head cushion (5), abdomen back cushion (8) bottom, and is solid Determine to be provided on block (142) for inserted link (141) perforative jack (145)；Head cushion (5), abdomen back cushion (8) bottom front and rear sides Equal two are connected with the second connecting plate (143), and symmetrical about fixed block (142)；Second clamping bar (144) and the second connecting plate (143) it is spirally connected, for fixing inserted link (141).

5. a kind of vertebral column treatment couch according to claim 4, which is characterized in that third swing mechanism (16) includes strut (161), the second elastic component (162) and bar (163)；Strut (161) is fixed among chest back cushion (4) bottom, and its bottom It is connect by two second elastic components (162) with support plate (3) end；Bar (163) runs through support plate (3) front and rear sides, is used for Fixed strut (161).

6. a kind of vertebral column treatment couch according to claim 5, which is characterized in that the second regulating mechanism (18) includes the 6th Connecting rod (181), guide sleeve (182), elevating lever (183) and fastening bolt (184)；6th connecting rod (181) and abdomen back cushion (8) Basal sliding connection, guide sleeve (182) are fixed in the 6th connecting rod (181) end, and elevating lever (183) and guide sleeve (182) sliding connect It connects, leg back cushion (9) is fixed at the top of elevating lever (183)；Fastening bolt (184) is spirally connected with guide sleeve (182) side, for fixing Elevating lever (183).