TW201332488A - Backrest inclination structure for lumbar support - Google Patents

Abstract

The present invention provides a backrest inclination structure for lumbar support. When the user sitting at any position lifts a mechanism lever, the backrest inclination structure for lumbar support enables a backrest to incline freely and fix on the position that a user sits at. Hence, the backrest can move together with the user' s back ergonomically to provide lumbar support. Accordingly, the user can sit comfortably on the chair and be free from lumbago and kyphosis which are common among sedentary individuals. When the user' s back reaches the suitable position, the user can move the mechanism lever back to lock and to fix the backrest mounted on a support plate pivotally at the accurate position so that the backrest inclination structure for lumbar support can be simple and can enhance the confortability during using.

Description

Backrest reclining structure supporting the waist of the human body

The invention provides a backrest reclining structure for supporting a waist of a human body, and the seat back tilting adjusted by the gravity of the back of the body is mainly used for the backrest adjusting mechanism set on one side of the seat. The operation can be adjusted to the best comfortable orientation by the gravity abutment of the back of the human body, and the back can be completely abutted with the adjusted backrest, and the backrest adjusting mechanism can be fixedly fixed again, thereby effectively simplifying the backrest. Adjust the body and ease the comfort of use.

According to the existing chair, in order to meet the average person's best comfort when sitting in, the relevant operators will consider the mechanism for adjusting the activity when manufacturing such a chair, so that the chair can be The seat cushion unit, the seat back unit, the armrest unit... can be adjusted according to the orientation required to improve the use of the chair.

Here is an invention for the adjustment of a seat on the side of a seat proposed by a related company and disclosed in the publication No. 201019872, "Adjustment of the seat back", the seat back The adjustment structure comprises a seat back adjusting unit assembled behind the butterfly seat of the seat, wherein the shaft center of the outer tooth portion of the collecting tool is interposed between the body and the inner hole of the spin back, and the elastic component is sleeved on the shaft. On one side of the heart, the cover body is locked on the body by a screwing element, and the axial center of the outer body of the body is sleeved to be pressed; according to this, when the pusher is pushed in, the axis is The outer tooth portion can be separated from the inner tooth portion of the spin back, and the spin-back free state can be adjusted at any angle; and when the push member is released to be reset, the sleeve is placed on the shaft center. The elastic members on the side are formed in an outer support shape, so that the outer teeth of the shaft center are again restricted by the inner teeth of the spin back, and the spin back is stably fixed.

Although the above-mentioned seat back adjusting unit can achieve the desired angle adjustment of the seat back when the seat is in use, the back of the seat back can only be partially contacted with the back of the person, and the seat back The components of the adjustment unit are quite numerous, which makes the assembly more complicated, resulting in a relatively higher overall cost of the seat.

The invention provides a backrest reclining structure for supporting the waist of the human body, mainly when the body is seated at any position of the seat, the backrest can be freely tilted and automatically positioned at the sitting position of the body, so that the backrest can be freely tilted. The reclining structure is adapted to the displacement of the back of the human body to support the waist of the human body, and to obtain a comfortable lying, in order to avoid back pain or hunchback in a long sitting posture, and when the required back contact orientation is reached, The hand pulls the mechanism pull rod to lock the return state, and the backrest pivoted on the support plate member is erected in an exact orientation, so that the backrest reclining structure supporting the human waist is simplified and the use comfort is improved. Degree; according to the existing seat side adjustment unit, the seat back adjustment unit is too large in the overall structure, making the assembly inconvenient, and only partially can be used in contact with the back for further improvement, in order to The backrest adjusting mechanism on one side of the seat is axially restrained by a spring non-segment control unit and a supporting plate member pivoted on the back side of the backrest, as a spring when the hand is springless. When the unit is released from the lock to form a free state, the backrest pivoted on the support plate can be adjusted by the gravity contact of the back of the human body to adjust the preset orientation, and when the required back contact orientation is reached, the hand is placed under the hand. The pressure spring has no segment control unit to lock the return state, and the backrest pivoted on the support plate member is erected in an exact orientation, so that the backrest adjustment mechanism is simplified and the use comfort is improved.

The main object of the present invention is to provide a position in which the body can be seated in any position of the seat, and the backrest can be freely tilted to automatically position in the body when the lever is pulled, so that the backrest reclining structure follows the back of the human body. Displace the clothes to support the waist of the human body, and get comfortable to lie, to avoid back pain or hunchback in a long sitting position. When the required back contact orientation is reached, the lever is pulled by the hand. The return is in a locked state, and the backrest pivoted on the supporting plate member is erected in an exact orientation, so that the backrest reclining structure supporting the human waist is simplified and the comfort in use is improved; The side back adjustment mechanism is a spring non-segment control unit including a set of end portions of the butterfly seat at the bottom of the seat, and the spring partless control unit guides the pinching member on the back side to be unlocked or locked. The improvement part of the present invention is that the receiving portion formed on the rear side of the spring stepless control unit is fixed in a direction with a lower end of the support plate member of a predetermined width and extension length. The upper section of the supporting plate member is formed by two hollow pipe sections at a distance, so as to be parallelly spanned with a connecting pipe section formed by the backrest position at the center of gravity of the back side, each of which has a hollow cover body along the supporting plate piece The hollow pipe section is introduced and positioned in the connecting pipe section of the backrest, and the connecting pipe sections of the two hollow cover bodies and the backrest are penetrated by a shaft rod and the nut is axially locked at the other end, so that the backrest is The supporting plate member is pivoted, and the hollow cover body of the two-pitch pipe section of the supporting plate member is fitted with a torsion spring with a moderate elasticity on the inwardly facing side, and the torsion spring has a foot against the backrest. The rear side and the other leg are abutted against the rear side of the supporting plate member, so that the backrest has a moderate elastic top abutment; the backrest adjusting mechanism formed according to the control body adjusts the abutment of the backrest, and the spring has no segment control unit to unlock the lock. The solid state is formed to drive the backrest of the supporting plate member to be adjusted by the gravity contact of the back of the human body to adjust the preset orientation, and when the desired back contact orientation is reached, the hand spring is steplessly controlled. The unit locks the return, and the backrest of the support plate is placed in an exact orientation so that the back of the person can completely abut the adjusted backrest; or in a free state, the backrest follows the human body. The back is applied to the displacement to obtain a comfortable lying, to avoid back pain in the sitting posture for a long time, and the backrest adjusting mechanism has the effect of simplifying and reducing the overall cost of the seat.

A second object of the present invention is to provide a backrest adjusting mechanism disposed on one side of the seat on the front and rear sides of the supporting plate member of the pivoting backrest for abutting against the matching panel body and making the front The cover plate body on the rear side can cover the two hollow pipe segments and the bottom of the support plate at the upper and lower ends, and the front and rear side cover plates are fixed by a plurality of screwing elements. The preset part of the plate makes the support plate which is pivoted with the backrest in an aesthetically pleasing appearance.

A third object of the present invention is to provide a cover plate body that is disposed on one side of a seat on a front side and a rear side of a support plate member of a pivotal backrest, and a front side cover plate body The two hollow tube segments corresponding to the backrest connecting section and the supporting plate member are formed with through holes to support the movement adjustment between the plate member and the backrest, and the shielding plate body at the rear side is located at the lower end. Forming a transparent area to cooperate with the lower end of the supporting plate member to facilitate the screwing member to lock the supporting plate member and the rear receiving portion of the spring stepless control unit, or to facilitate the future screwing The component is removed, and the position of the shielding plate on the rear side is at a distance extending from the convex portion at the bottom to match the hole of the L-shaped plate body to cut into the corresponding orientation of the plate body when abutting against the transparent area. The rear side cover body has an aesthetic setting.

The backrest reclining structure of the human body designed to support the waist of the human body is mainly a seat back tilting using the gravity adjustment of the back of the body [such as the second and third figures], and is a backrest adjusting mechanism on the side of the seat (9) (8) ) is a spring-free segmentless control unit (2) that is provided at the end of the butterfly seat (1) at the bottom of the seat [the spring-free segment control unit (2) is an existing means, which includes The control rod segment (21) spanning the end of the butterfly seat (1) and the interlocking spring (23) pivoted to the inner side of the butterfly seat (1) at the end of the butterfly seat (1) can be formed. When the mechanism pull rod (211) on one side of the control rod segment (21) is pulled up, as in the second state, the spring (212) between the rod segments is not excessively squeezed only for the Y pitch. The outer top, at this time, the plurality of metal plate members (213) on one side of the spring (212) are gap-shaped, and drive the interlocking springs (23) on the adjacent side to be freely rotated. The other end of the interlocking spring (23) is in a correspondingly movable state at the receiving portion (22) abutting against the end of the butterfly seat; otherwise, the mechanism pulling rod (211) on the side of the control rod segment (21) is pushed downward [ The right-hand rotation of the third figure] will be compressed outward by the spring (212) between the rod segments being squeezed by the X-pitch, at this time, the number of metal plates on the side of the spring (212) ( 213) that the drawing is forced to be tight, and the interlocking spring (23) driving the adjacent side forms a locked state, and the other leg of the interlocking spring (23) is abutted against the end of the butterfly seat (22) ) is a correspondingly positioned state], and the pinching member (here, the member that controls the backrest to be displaced back and forth) by the spring-free segment control unit (2) is used to unlock or apply Locking; and the improved part of the invention is:

The receiving portion (22) formed on the rear side of the spring stepless control unit (2) is fixed in a direction with a lower end of a predetermined wide and extended length supporting plate member (4), and the supporting plate member ( 4) The upper section is formed by spacing two hollow pipe sections (41) to be parallelly spanned by a connecting pipe section (31) formed at the center of gravity of the backrest (3), and the supporting plate member ( 4) Before the cross-section of the cut-off pipe section (31) is not overlapped with the center of gravity of the backrest (3), the front and rear side cover plates (5, 6) of the conforming form are given abutment [such as 2] and the front and rear side cover plates (5, 6) can cover and cover the two hollow pipe sections (41) and the bottom of the support plate member (4) at the upper and lower ends, and A plurality of screwing members (42) apply the front and rear side cover plates (5, 6) to a predetermined portion of the support plate member (4) so as to be pivotally supported by the backrest (3) ( 4) Beautiful appearance in appearance.

And a cover plate body (5, 6) which is joined to the front and rear sides of the support plate member (4), and the front side cover plate body (5) in the corresponding backrest (3) of the cut pipe section (31) And the two hollow tube segments (41) of the supporting plate member (4) are formed with a through hole (51) to support the movement adjustment between the plate member (4) and the backrest (3), and The rear side cover plate body (6) is located at the lower end to form a transparent area (61) to cooperate with the lower end of the support plate member (4) to facilitate the screwing member (43) to support the plate member (4) And the intercepting portion (22) on the rear side of the spring non-segment control unit (2) for locking, or facilitating the removal of the screw element (43) in the future, and the covering plate body on the rear side (6) The bottom portion is spaced apart from the convex portion (62) to fit the hole (71) of the L-shaped plate body (7) into the corresponding orientation of the plate body (7) when abutting against the transparent region (61) (71) ), the rear side cover plate body (6) has an aesthetic setting.

After the two hollow pipe sections (41) of the supporting plate member (4) are placed in parallel with the cross-section of the connecting pipe section (31) at the center of gravity of the backrest (3), a hollow cover body (44) is respectively provided. Introduced along the hollow pipe section (41) of the support plate member (4), and positioned in the connecting pipe section (31) of the backrest (3), and the two hollow cover bodies (44) by a shaft (45), and The connecting pipe section (31) of the backrest (3) is penetrated and the nut (46) is azimuthally locked at the other end, so that the backrest (3) is pivoted with the supporting plate member (4) [as shown in the first figure) The hollow cover body (44) which is inserted into the two-pitch pipe section (41) of the support plate member (4) is fitted with a torsion spring (47) having a moderate elasticity on the inward-facing side, and the torsion spring (47) is provided. One leg (471) abuts against the back side of the backrest (3), and the other leg (472) abuts against the rear side of the supporting plate member (4) so that the backrest (3) has a moderate elastic topping [ As shown in the fourth picture].

The backrest adjusting mechanism (8) of the above composition is adjusted in the direction of the control backrest (3), and the spring is controlled by the stepless control unit (2) to unlock the lock to form a free state to drive the support plate. (4) The backrest (3) can be adjusted by the gravity contact of the back of the human body (such as the fifth and sixth figures). When the desired back contact orientation is reached, the hand spring is controlled without a segment. The unit (2) locks the return, and the backrest (3) pivoted on the support plate (4) is placed in an exact orientation so that the back of the person can form a complete abutment with the adjusted backrest; or In the free state, the backrest is comfortably laid down with the displacement of the back of the human body to avoid back pain in the sitting posture for a long time, and the backrest adjusting mechanism (8) has the effect of simplifying and reducing the overall cost of the seat. .

[this invention]

(1). . . Butterfly seat

(2). . . Spring stepless control unit

(twenty one). . . Control lever segment

(211). . . Mechanism rod

(212). . . spring

(213). . . Metal plate

(twenty two). . . Undertaking department

(twenty three). . . Linkage spring

(3). . . Backrest

(31). . . Connecting pipe

(4). . . Support board

(41). . . Pipe section

(42, 43). . . Screw element

(44). . . Hollow cover

(45). . . Shaft

(46). . . Nut

(47). . . Torsion spring

(471, 472). . . foot

(5, 6). . . Covering plate

(51). . . Through hole

(61). . . Clear area

(62). . . Convex

(7). . . Plate body

(71). . . hole

(8). . . Backrest adjustment mechanism

(9). . . Seat

The first figure: the appearance of the seat of the present invention combined with the backrest body

Second drawing: exploded view of the assembly of the backrest adjusting mechanism of the seat of the present invention

Fig. 3 is a schematic view showing the components of the backrest adjusting part of the seat bottom of the present invention

Figure 4: Side view of the backrest of the invention set on the side of the seat in an unactuated side view

Figure 5: Schematic diagram of the backrest of the present invention set on the side of the seat in front of the front

Figure 6: Schematic diagram of the backrest of the present invention set on the side of the seat in the rearward movement

(1). . . Butterfly seat

(2). . . Spring stepless control unit

(twenty one). . . Control lever segment

(211). . . Mechanism rod

(twenty two). . . Undertaking department

(3). . . Backrest

(31). . . Connecting pipe

(4). . . Support board

(41). . . Pipe section

(42, 43). . . Screw element

(44). . . Hollow cover

(45). . . Shaft

(46). . . Nut

(47). . . Torsion spring

(471, 472). . . foot

(5, 6). . . Covering plate

(51). . . Through hole

(61). . . Clear area

(62). . . Convex

(7). . . Plate body

(71). . . hole

(8). . . Backrest adjustment mechanism

Claims (3)

The backrest reclining structure supporting the waist of the human body is mainly a seat back tilting which is adjusted by the gravity of the back of the body, and the backrest adjusting mechanism on the side of the seat includes a set of springs provided at the end of the butterfly seat at the bottom of the seat. The segment control unit and the pull rod of the spring non-segment control unit mechanism guide the pinching member on the backrest side to be unlocked or locked; the improvement is: the bearing formed by the rear side of the spring non-segment control unit The portion is fixed in a direction with a lower end of the support plate member of a predetermined width and extension length, and the upper portion of the support plate member is formed by spacing to form two hollow pipe segments to match the backrest position at the center of gravity of the rear side. a connecting pipe section is parallelly spanned, and each of the hollow cover bodies is introduced along the hollow pipe section of the supporting plate member and positioned in the connecting pipe section of the backrest, and the two hollow covers are supported by a shaft. The connecting pipe section of the backrest is penetrated and the nut is axially locked at the other end, so that the backrest is pivoted with the supporting plate member, and the hollow cover body of the two-pitch pipe section of the supporting plate member is located on the inward side. Yes A torsion spring with a moderate elasticity is inserted, and the torsion spring has a foot against the back side of the backrest and the other leg abuts against the rear side of the supporting plate member, so that the backrest has a moderate elastic topping; The backrest adjusting mechanism is configured to adjust the azimuth of the backrest, and the hand control spring has no segment control unit to unlock the lock to form a free state, so as to drive the backrest pivoted on the supporting plate to be preset by the gravity of the human back. The adjustment of the azimuth, when the required back contact orientation is reached, the control spring has no segment control unit to lock the return state, and the backrest pivoted on the support plate member is placed in an exact position to make the person's back It can form a complete abutment with the adjusted backrest; or in a free state, the backrest can be comfortably laid down with the displacement of the back of the human body to avoid back pain in the sitting posture for a long time, and the support of the waist of the human body The backrest reclining structure is simplified and exact. The backrest reclining structure supporting the human waist as described in claim 1 is mainly a seat back tilting which is adjusted by the gravity of the back of the body, wherein the backrest adjusting mechanism provided on one side of the seat is located at the pivot backrest. The front and rear sides of the supporting plate member are provided for abutting against the conforming form of the covering plate body, and the front and rear side covering plate bodies can be used for the two hollow pipe segments and the bottom portion of the supporting plate member at the upper and lower ends. The orientation cover, and the front and rear side cover plates are fixed to the preset portion of the support plate by a plurality of screwing elements, so that the support plate member pivoted with the backrest has an aesthetic appearance. The backrest reclining structure supporting the human waist as described in claim 1 is mainly a seat back tilting which is adjusted by the gravity of the back of the body, wherein the backrest adjusting mechanism provided on one side of the seat is located at the pivot backrest. The cover plate body supporting the front and rear sides of the plate member is formed with a through hole at a front side of the cover plate body at a position corresponding to the backrest connecting pipe section and the two hollow pipe sections of the support plate member, Supporting the movement adjustment between the plate member and the backrest, and forming a transparent area at the lower end of the shielding plate body at the rear side, so as to cooperate with the lower end of the supporting plate member to facilitate the screwing member to support the plate member And the intercepting portion on the rear side of the spring non-segment control unit is locked, or the screw element is removed in the future, and the position of the shielding plate on the rear side is at a distance extending from the convex portion at the bottom to match The L-shaped plate body can cut into the hole of the corresponding orientation of the plate body when abutting against the transparent area, so that the rear side cover plate body has an aesthetic setting.