CN206979185U - A kind of convenient seat for carrying out front and rear regulation - Google Patents

Abstract

The utility model discloses a kind of convenient seat for carrying out front and rear regulation, including cushion, the base with multiple rollers, the cushion to include main seat body, the seating body being overlying in the main seat body；The main seat body includes main panel, the cover plate being buckled on the main panel, be slidably connected under the main panel and chassis affixed with the base；The main panel top side end, which is connected with, controls the chassis to be provided with the notch being engaged with the control assembly with the main panel geo-stationary or the control assembly of slip, the side of the chassis one；The seat also includes roller self-locking mechanism that is multiple on each roller and being connected with the control assembly.The utility model uses succinctly cleverly control structure and slide construction, realizes simple to operate laborsaving, regulation before and after the smooth cushion for having damping to feel of action, meanwhile, roller locking is quickly and easily ensured into being smoothed out for front and rear regulation during regulation.

Description

A kind of convenient seat for carrying out front and rear regulation

A kind of convenient seat for carrying out front and rear regulation

Technical field

Thing to sit on technical field is the utility model is related to, more particularly to a kind of convenient seat for carrying out front and rear regulation.

Background technology

With the continuous improvement of living standard, people propose higher and higher want to the comfortableness and adaptability of seat Ask.In order to adapt to the different hip size of the people of the different bodily forms, higher seat typically can all set the front and rear regulation dress of seat Put, meanwhile, the movement on level land is carried out on the premise of be sitting in seat in order to facilitate people, is often provided with the base of seat Roller, common is the seat with star base.Existing seat front-and-back adjusting device is generally divided into manual adjusting means and electricity Dynamic adjusting means, electric adjusting device is often complicated, and cost is high, manual and electric adjusting means often rustic, regulation Feel is poor, meanwhile, when needing to carry out front and rear adjust, the presence of roller makes seat be not easy to keep stable position, often hampers again Hindered regulation progress, even if roller has locking device, be typically also each roller locking device independently of each other, it is necessary to people Each roller is individually locked or released locking, operating process is complicated time-consuming bothersome.In the market lacks with structure Simple not coarse, cost is low and flexible adjustment smoothly front-and-back adjusting device, while can quickly pair roller progress locking and releasing The cushion of locking.

Utility model content

The purpose of this utility model is to provide a kind of convenient seat for carrying out front and rear regulation, can overcome prior art not Foot part, using succinctly cleverly control structure and slide construction, realize simple to operate laborsaving, the smooth seat for thering is damping to feel of action Pad is front and rear to be adjusted, meanwhile, roller locking is quickly and easily ensured into being smoothed out for front and rear regulation during regulation.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of convenient seat for carrying out front and rear regulation, including cushion, be connected to below the cushion there are multiple rollers Base, the cushion includes main seat body, the seating body being overlying in the main seat body；The main seat body includes interarea Plate, be buckled on the main panel and with the affixed cover plate of the seating body, be slidably connected under the main panel and with The affixed chassis of the base；The main panel top side end is connected with the control chassis and the main panel geo-stationary Or the control assembly slided, the side of the chassis one are provided with the notch that is engaged with the control assembly；The seat is also Including roller self-locking mechanism that is multiple on each roller and being connected with the control assembly.

Preferably, what the control assembly was rotatablely connected including control assembly body, with the control assembly body " へ " type control sheet, it is overlying on the control assembly body and is used to the control assembly body being fixed in the main panel Control cover plate.

Preferably, the control assembly body includes substrate, the control sheet connecting portion located at the substrate side, is located at The L-square to match with the notch of the substrate opposite side；Elongated slot is provided with the substrate, is provided with the elongated slot Spacing stock, the spring being socketed on the spacing stock；Bearing pin, the L-square end are installed with the control sheet connecting portion Portion is provided with " m " type to match with the notch and engages head；" へ " the type control sheet is included with annular groove and the control Short slab that film-making connecting portion is connected, the long slab extended to outside the main seat body, it is rotationally connected with the short slab and the length The rotating shaft of plate junction；The control cover plate includes the cover plate matrix with mounting hole, located at the cover plate matrix bottom surface side The projection being adapted with the long well width at end, coordinate to enter the spring with the spacing stock on the projection The spacing spacing quarter butt of row, the arc groove that auxiliary positioning is carried out to the spring on the cover plate matrix bottom surface.

Preferably, the main panel also includes inciting somebody to action with what the width over side sills was adapted located at the main panel bottom The chassis include a pair of limit guide grooves in the main panel, at the top of the main panel with the control assembly body Adaptable mounting groove, open in the mounting groove side make described " m " type engage head penetrated at the top of the main panel it is described Realized between limit guide groove with the perforation of the cooperation of the notch, located at the padded bar for installing rooved face, with it is described The adaptable groove of rotating shaft.

Preferably, the main panel is also including being provided with the length with the notch on multiple chutes, the chute Adaptable slide opening, the long raised line located at the slide opening both sides；The chute is provided with the cunning being adapted with the trough width Block, the sliding block bottom surface are provided with the elastic lug being adapted with the long raised line width.

Preferably, it is used to be connected with the sliding block to corresponding with the runner position provided with multiple at the top of the chassis Contiguous block, multiple extension springs, described extension spring one end is connected with the chassis, and the other end is connected with the main panel.

Preferably, the cover plate bottom is provided with a pair of elastic conducting contact pin, multiple U-shaped bond posts, the elastic conducting contact pin End is provided with engaging teat；The main panel is provided with engages the adaptable spacing recess of teat and the U-shaped engagement with described The junction piece of the adaptable flexible engaging head of post.

Preferably, the rotating disk that the roller includes jackshaft, is connected respectively with jackshaft both ends rotating shaft；The rolling Wheel self-locking mechanism include with the roller shape be adapted and slide vertically the locking structure being connected with the roller, one end is worn Cross the jackshaft of the roller and with the locking structure is affixed, the other end and the long slab being suspended from outside the main seat body Be hinged drawing steel wire.

Preferably, the elastic cone that the locking structure includes being provided with annular knurl positioned at the surface of the jackshaft lower end is locked Only head, the sliding suite of be slidably connected the elastic cone locking head and the jackshaft；The sliding suite include with it is described The affixed outer tube in elastic conehead locking crown face, the inner sleeve affixed with the jackshaft being socketed in the outer tube, The back-moving spring passed through for the drawing steel wire in the inner sleeve.

Preferably, in the sliding scale of the sliding suite, the Breadth Maximum of the elastic cone locking head is more than Maximum spacing between the rotating disk；The drawing steel wire is cladded with several viscose bars for being used to be connected with the base.

In summary, the utility model has the advantages that：

A kind of convenient seat for carrying out front and rear regulation, control assembly are installed in mounting groove on the home panel, control cover plate Substrate is constrained in mounting groove, rotating shaft is rotated being fixed in groove, and the long slab being suspended from outside cushion is broken in craft, " へ " type Control sheet rotates around the shaft, the rotating shaft of long slab threshold value farther out, can be relatively labor-saving short slab is outwards rotated, annular groove drive substrate to Outer translation, " m " type engaging head is set to depart from the snap-in structure on chassis, so that regulatory function is carried out before and after cushion, long slab While being moved upwards, drawing steel cable is elevated, and elastic cone locking head contacts with roller, by roller locking, before guarantee What is adjusted afterwards is smoothed out；Spacing stock is mutually matched with spacing quarter butt, for connecting spring and determines the stroke of spring, arc groove Axially contacted along spring with spring, make spring stable not play of holding when flexible；The padded bar of installation rooved face reduces base The contact area of plate and mounting groove, reduces frictional resistance, makes the translation of substrate more smooth, and the force for further reducing people is big Small, hand, substrate inside translation in the presence of spring-return power, " m " type engaging head and snap-in structure weight are unclamped in regulation after terminating New engagement, the control for sliding cushion is simply laborsaving, while long slab downward return back-moving spring by elastic cone locking head to Lower promotion, elastic cone locking head is unclamped with roller, release the locking of pair roller；Connecting through for main panel and chassis is multigroup Sliding block sliding groove structure realizes that slider bottom is provided with elastic lug, sliding block in chute, and in the presence of fastener with bottom Frame is fixedly connected, and fastener not exclusively tightens in the contiguous block of connection sliding block and chassis, elastic lug is retained certain bullet Property, i.e. sliding block bottom surface keeps not contacting, only makes elastic lug keep contacting with the long raised line in detent surface, make with chute bottom surface Connection between main panel and chassis neither relaxes, also not exclusively affixed, so that the slip between main panel and chassis is laborsaving It is smooth；Extension spring on chassis extends with the slip of main panel and chassis, the front and rear regulation of cushion is carried appropriate damping sense And Hui Zhongli, make cushion action in regulation uniform, and be easy to make cushion reply initial makeup location.

Brief description of the drawings

Fig. 1 is the structural representation of the embodiment of the utility model one；

Fig. 2 is the decomposing schematic representation of cushion of the present utility model；

Structural representation when Fig. 3 is cushion installation forming of the present utility model；

Fig. 4 is the decomposing schematic representation of another angle of cushion of the present utility model；

Fig. 5 is the structural representation of control assembly of the present utility model；

Fig. 6 is the positive structure schematic of main panel of the present utility model；

Fig. 7 is the structural representation of sliding block of the present utility model；

Fig. 8 is the structural representation of roller self-locking mechanism of the present utility model；

Fig. 9 is the structural representation of locking structure of the present utility model

In figure：

10- main seat bodies, 20- take body, 11- main panels, 12- cover plates, 13- chassis, 21- elastic conducting contact pin, 22- U-shaped bond post, 211- engaging teats, the spacing recesses of 116-, 117- junction pieces, 111- limit guide grooves, 113- chutes, 1131- slide openings, the long raised lines of 1132-, 114- sliding blocks, 1141- elastic lugs, 132- contiguous blocks, 30- control assemblies, 131- notchs, 31- control assembly bodies, 33- control cover plates, 311- substrates, 312- control sheet connecting portions, 313- L-square, 3211- annular grooves, 321- short slabs, 322- long slabs, 323- rotating shafts, 3121- bearing pins, 115- grooves, 118- peaces Tankage, 3111- elongated slots, the spacing stocks of 3112-, 1311- " m " type engaging head, 3311- mounting holes, 331- cover plate matrixes, 3312- projections, the spacing quarter butts of 3313-, 3314- arc grooves, 112- perforation, the padded bars of 119-, 133- extension springs, 40- bases, 50- cushions, 60- backrests, 70- roller self-locking devices, 71- is from lock control mechanism, 72- self-lockings executing agency, 711- housings, 712- Cover plate, 7121- center drillings, 713- control buttons, 714- control chassis, 715- passage components, 7122- axially-extending portions, 7131- radial flanges, 7132- spiro connecting pieces, 7141- plectanes, 7142- chutes, the spacing risers of 7143-, 716- stage clips, 7151- connect Connect block, 7152- connection sliding blocks, 7153- push rods, 7144- first through hole, the through holes of 7111- second, 411- jackshafts, 412- rotating disks, 721- locking structures, 722- drawing steel wires, 7211- elastic cone locking heads, 7212- sliding suites, 72121- outer tubes, 72122- inner sleeves, 72123- back-moving springs, 723- gum sleeves, 724- viscose bars.

Embodiment

The utility model is described in more detail for scheme below in conjunction with the accompanying drawings and preferably.

This specific embodiment is only that it is not to limitation of the present utility model, ability to explanation of the present utility model Field technique personnel can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but As long as all protected in right of the present utility model by Patent Law.

Embodiment：As shown in figs. 1-7, a kind of convenient seat for carrying out front and rear regulation, including cushion, it is connected to the cushion The base 40 with multiple rollers 41 of lower section, the cushion include main seat body 10, take body 20, take body 20 and pass through gluing Or other fixed forms are overlying in main seat body；Main seat body includes main panel 11, cover plate 12, chassis 13, and cover plate 12 is with taking Body is affixed, and the bottom of cover plate 12 is provided with a pair of elastic conducting contact pin 21, multiple U-shaped bond posts 22, and the end of elastic conducting contact pin 21 is provided with card Close teat 211；The main panel 11 is provided with engage spacing recess 116 that teat 211 is adapted, U-shaped is connect with described with described The junction piece 117 of the adaptable flexible engaging head of zygostyle 22.Cover plate 12 is affixed integral with taking body 20, by cover plate 12 When being attached to main panel 11, interarea is inserted in the cooperation of the elastic conducting contact pin 21 of evagination by engaging teat 211 and spacing recess 116 Engaging is realized in plate, meanwhile, elastic connecting syncephalon produces elastic deformation, is sequentially inserted the engaging teat 211 on each correspondence position In to U-shaped bond post 22, cover plate is finally set to be fastened with main panel snapping.

Further, chassis 13 is slidably connected to the lower section of main panel 11, and affixed with base 40.Concretely, main panel 11 bottoms are provided with the limit guide groove 111 being adapted with the width of chassis 13, and chassis 13 is limited in main panel 11 by the limit guide groove 111 It is interior, chassis 13 is slid back and forth along limit guide groove 111；Main panel 11 is provided with multiple chutes 113, is provided with chute 113 Slide opening 1131, the long raised line 1132 located at the both sides of slide opening 1131；Chute 113 is provided with the sliding block being adapted with the width of chute 113 114, the bottom surface of sliding block 114 is provided with the elastic lug 1141 being adapted with the long width of raised line 1132；The top of chassis 13 is provided with multiple It is used for the contiguous block 132 connected with sliding block 114 to corresponding with the position of chute 113.Sliding block 114 is arranged in chute 113, and Be fixedly connected in the presence of fastener with the contiguous block 132 on chassis, fastener connection sliding block 114 and during contiguous block 132 not Complete pull-up, the holding part of elastic lug 1141 is deformed, retain appropriate elasticity, the i.e. bottom surface of sliding block 114 and the bottom surface of chute 113 Incomplete contact between is kept, only makes elastic lug 1141 keep contacting with the long raised line 1132 on the surface of chute 113, makes main panel 11 Connection between chassis 13 neither relaxes, also not exclusively affixed, so that the slip between main panel 11 and chassis 13 is laborsaving It is smooth.

Further, it is relative with the main panel 11 to be connected with the control chassis 13 for the top side end of main panel 11 Static or slip control assembly 30, the side of the chassis 13 1 are provided with the notch being engaged with the control assembly 30 131。

Concretely, control assembly 30 includes control assembly body 31, " へ " type control sheet 32, control cover plate 33；Control Component body 31 include substrate 311, the control sheet connecting portion 312 located at the side of substrate 311, located at the opposite side of substrate 311 with The L-square 313 that notch 131 matches；" へ " the type control sheet 32 includes the short slab 321 with annular groove 3211, extended to Long slab 322 outside the main seat body 10, it is rotationally connected with the short slab 321 and the rotating shaft 323 of the junction of long slab 322. Control sheet connecting portion 312 is provided with bearing pin 3121, is socketed in the annular groove 3211 on short slab 321, make control assembly body 31 with " へ " type control sheet 32 is rotatablely connected；The top of main panel 11 is provided with the groove 115 being adapted with the rotating shaft 323, by rotating shaft 323 It is fixed in groove 115, " へ " type control sheet 32 323 can be rotated around the shaft；The top of main panel 11 is additionally provided with and control assembly The adaptable mounting groove 118 of body 31, control assembly body 31 is arranged in mounting groove 118, and controls cover plate 33 logical simultaneously Cross mounting hole 3311 and mounting groove 118 is affixed, make control assembly body 31 can only be in the space of mounting groove 118 and control cover plate 33 Interior translation；

Further, elongated slot 3111 is provided with substrate 311, spacing stock 3112, spacing stock are provided with elongated slot 3111 The spring being socketed with 3112（Not shown in figure）；The end of L-square 313 is provided with " m " type to match with the notch 131 Engaging first 1311；Cover plate 33 is controlled to include the cover plate matrix 331 with mounting hole 3311, located at the bottom surface side of cover plate matrix 331 The projection 3312 being adapted with the width of elongated slot 3111 at end, coordinate to enter spring with spacing stock 3112 on projection 3312 The spacing spacing quarter butt 3313 of row, the arc groove 3314 that auxiliary positioning is carried out to spring on the bottom surface of cover plate matrix 331；Enter one Step, the side of mounting groove 118, which is provided with, makes " m " type engaging first 1311 real between penetrating limit guide groove 111 from the top of main panel 11 The now perforation 112 with the cooperation of notch 131, the padded bar 119 located at the surface of mounting groove 118.

Further, as shown in Fig. 1,8,9, the seat also include it is multiple on each roller 41 and with it is described The roller self-locking mechanism 72 that control assembly 30 connects.Specifically, the roller 41 include jackshaft 411, respectively with it is described in The rotating disk 412 of the both ends rotating shaft connection of countershaft 411；The roller self-locking mechanism 72 include with the shape of roller 41 be adapted and Slide vertically the locking structure 721 being connected with the roller 41, one end through the roller 41 jackshaft 411 and with the lock The drawing steel wire 722 that only structure 721 is affixed, the other end and the long slab 322 that is suspended from outside the main seat body 10 are be hinged；Institute State locking structure 721 include being provided with positioned at the surface of the lower end of jackshaft 411 annular knurl elastic cone locking it is first 7211, slide Connect the sliding suite 7212 of the elastic cone locking first 7211 and the jackshaft 411；The sliding suite 7212 includes The affixed outer tube 72121 with elastic first 7211 top surface of conehead locking, be socketed in the outer tube 72121 with it is described The affixed inner sleeve 72122 of jackshaft 411, the reset passed through for the drawing steel wire 722 in the inner sleeve 72122 Spring 72123.

Drawing steel wire 722 remains tight under the collective effect of back-moving spring 72123, and drawing steel wire 722 is cladded with Several are used for the viscose bar 723 being connected with the base 40, make the position of drawing steel wire 722 stable, are being connected to connection sliding block Non-interference when 7152.

Under nature, " m " type engaging first 1311 is bonded with each other with notch 131 in acting force of the spring, and cushion can not Front and rear regulation breaks the long slab 322 being suspended from outside cushion, long slab 322 is flipped up, band, it is necessary to when carrying out position adjustments in craft Dynamic drawing steel cable 722 moves up, so that the elastic cone locking first 7211 in roller self-locking mechanism 72 is in sliding suite Inwall under 7212 spacing guiding upwards with roller rotating disk 412 contacts, and elastic cone locking first 7211 produces deformation and roller 41 are brought into close contact, by roller locking；In the sliding scale of sliding suite 7212, the Breadth Maximum of elastic cone locking first 7211 More than the maximum spacing between rotating disk 412, guarantee elastic cone locking first 7211 fully contacts with roller 41, before ensureing What is adjusted afterwards is smoothed out.

While roller 41 is locked out, 323 rotation around the shaft of " へ " type control sheet 32, the threshold value of long slab 322 turns Axle 323 farther out, can be relatively labor-saving short slab 321 is outwards rotated, annular groove 3211 drive substrate 311 outwards translate, make " m " type engage First 1311 depart from the snap-in structure 131 on chassis 13, so that regulatory function is carried out before and after cushion；Spacing stock 3112 with Spacing quarter butt 3313 is mutually matched, and for connecting spring and determines the stroke of spring, arc groove 3314 axially connects along spring with spring Touch, spring is kept stably not play when flexible；The padded bar 119 on the surface of mounting groove 118 reduces substrate 311 and mounting groove 118 contact area, reduces frictional resistance, makes the translation of substrate 311 more smooth, further reduces the force size of people, adjusts Hand, the inside translation in the presence of spring-return power of substrate 311, " m " type engaging first 1311 and snap-in structure are unclamped after section end 131 are re-engaged, and the control for sliding cushion is simply laborsaving, and back-moving spring 72123 is by elasticity while 322 downward return of long slab Taper locking first 7211 pushes down on, and elastic cone locking first 7211 is unclamped with roller 41, releases the locking of pair roller 41.

In addition, the top of chassis 13 is provided with multiple extension springs 133, described one end of extension spring 133 is connected with the chassis 13, the other end It is connected with the main panel 11.Extension spring 133 extends with main panel 11 and chassis 13 with respect to slip, makes the front and rear regulation of cushion With appropriate damping sense and Hui Zhongli, cushion action in regulation is uniform, and is easy to make cushion reply initial makeup location.

Claims (10)

1. a kind of convenient seat for carrying out front and rear regulation, including cushion, it is connected to below the cushion there are multiple rollers （41）Base（40）, it is characterised in that：The cushion includes main seat body（10）, it is overlying on the main seat body（10）On multiply Sit body（20）；The main seat body（10）Including main panel（11）, be buckled in the main panel（11）On and with the seating Body（20）Affixed cover plate（12）, be slidably connected to the main panel（11）Under and with the base（40）Affixed chassis （13）；The main panel（11）Top side end is connected with the control chassis（13）With the main panel（11）Geo-stationary or The control assembly of slip（30）, the chassis（13）One side is provided with and the control assembly（30）The notch being engaged （131）；The seat is also located at each roller including multiple（41）On and with the control assembly（30）The roller of connection Self-locking mechanism（72）.

A kind of 2. convenient seat for carrying out front and rear regulation according to claim 1, it is characterised in that：The control assembly （30）Including control assembly body（31）And the control assembly body（31）" へ " type control sheet of rotation connection（32）, cover In the control assembly body（31）On be used for the control assembly body（31）It is fixed on the main panel（11）Interior Control cover plate（33）.

A kind of 3. convenient seat for carrying out front and rear regulation according to claim 2, it is characterised in that：The control assembly sheet Body（31）Including substrate（311）, located at the substrate（311）The control sheet connecting portion of side（312）, located at the substrate （311）Opposite side with the notch（131）The L-square of matching（313）；The substrate（311）Inside it is provided with elongated slot （3111）, the elongated slot（3111）It is interior to be provided with spacing stock（3112）, it is socketed on the spacing stock（3112）On spring；Institute State control sheet connecting portion（312）On be installed with bearing pin（3121）, the L-square（313）End is provided with and the notch （131）" m " type engaging head to match（1311）；" へ " the type control sheet（32）Including with annular groove（3211）With the control Film-making connecting portion（312）The short slab being connected（321）, extend to the main seat body（10）Outer long slab（322）, rotation connection In the short slab（321）With the long slab（322）The rotating shaft of junction（323）；The control cover plate（33）Including with installation Hole（3311）Cover plate matrix（331）, located at the cover plate matrix（331）The side of bottom surface one with the elongated slot（3111）Width Adaptable projection（3312）, located at the projection（3312）On with the spacing stock（3112）Cooperation is entered to the spring The spacing spacing quarter butt of row（3313）, located at the cover plate matrix（331）Auxiliary positioning is carried out to the spring on bottom surface Arc groove（3314）.

A kind of 4. convenient seat for carrying out front and rear regulation according to claim 3, it is characterised in that：The main panel（11） Also include being located at the main panel（11）Bottom with the chassis（13）Width be adapted by the chassis（13）Include institute State main panel（11）A pair of interior limit guide grooves（111）, located at the main panel（11）Top with the control assembly body （31）Adaptable mounting groove（118）, open in the mounting groove（118）Side makes " m " type engaging head（1311）From institute State main panel（11）Top penetrates the limit guide groove（111）Between realize with the notch（131）Cooperation perforation （112）, located at the mounting groove（118）The padded bar on surface（119）And the rotating shaft（323）Adaptable groove（115）.

A kind of 5. convenient seat for carrying out front and rear regulation according to claim 1, it is characterised in that：The main panel（11） Also include multiple chutes（113）, the chute（113）On be provided with and the notch（131）The adaptable slide opening of length （1131）, located at the slide opening（1131）The long raised line of both sides（1132）；The chute（113）It is provided with and the chute （113）The adaptable sliding block of width（114）, the sliding block（114）Bottom surface is provided with and the long raised line（1132）Width is mutually fitted The elastic lug answered（1141）.

A kind of 6. convenient seat for carrying out front and rear regulation according to claim 5, it is characterised in that：The chassis（13）Top Portion is provided with the multiple and chute（113）Position is used for and the sliding block to corresponding（114）Connected contiguous block（132）, it is more Individual extension spring（133）, the extension spring（133）One end and the chassis（13）It is connected, the other end and the main panel（11）It is connected.

A kind of 7. convenient seat for carrying out front and rear regulation according to claim 1, it is characterised in that：The cover plate（12）Bottom Portion is provided with a pair of elastic conducting contact pin（21）, multiple U-shaped bond posts（22）, the elastic conducting contact pin（21）End is provided with engaging teat （211）；The main panel（11）It is provided with and engages teat with described（211）Adaptable spacing recess（116）, with it is described U-shaped Bond post（22）The junction piece of adaptable flexible engaging head（117）.

A kind of 8. convenient seat for carrying out front and rear regulation according to claim 3, it is characterised in that：The roller（41）Bag Include jackshaft（411）, respectively with the jackshaft（411）The rotating disk of both ends rotating shaft connection（412）；The roller self-locking mechanism （72）Including with the roller（41）Shape be adapted and with the roller（41）Slide vertically the locking structure of connection （721）, one end passes through the roller（41）Jackshaft（411）And with the locking structure（721）The affixed, other end is with being suspended from The main seat body（10）Outside the long slab（322）Be hinged drawing steel wire（722）.

A kind of 9. convenient seat for carrying out front and rear regulation according to claim 8, it is characterised in that：The locking structure （721）Including positioned at the jackshaft（411）The surface of lower end is provided with the elastic cone locking head of annular knurl（7211）, be slidably connected The elastic cone locking head（7211）With the jackshaft（411）Sliding suite（7212）；The sliding suite（7212） Including with the elastic cone locking head（7211）The affixed outer tube of top surface（72121）, be socketed on the outer tube（72121） It is interior with the jackshaft（411）Affixed inner sleeve（72122）, located at the inner sleeve（72122）The interior confession drawing Steel wire（722）The back-moving spring passed through（72123）.

A kind of 10. convenient seat for carrying out front and rear regulation according to claim 9, it is characterised in that：In the slip cap Part（7212）Sliding scale in, the elastic cone locking head（7211）Breadth Maximum be more than the rotating disk（412）Between Maximum spacing；The drawing steel wire（722）Several are cladded with to be used for and the base（40）Connected viscose bar（723）.