TW201320929A - Height adjustable structure of chair lumbar support and headrest - Google Patents

Abstract

The present invention relates to a height adjustable structure of chair lumbar support and headrest, which includes a fixation group fixed to the chair back and a sliding group fixed to a pad. The fixation group includes a positioning seat and an adjustment knob, in which one side of the positioning seat is fixed a bracket of the chair back so as to allow the adjustment knob to be positioned in the center of the positioning sea, both sides being provided with slide rails so that stretching the adjustment knob can controls a first locking unit to elastically extend and retract. The slide group is a base fixed to the pad and both sides of the base are provided with chutes for correspondingly mounting the slide rails. The base is also provided at intervals with plural second locking units to allow the first locking unit to be correspondingly locked and positioned, so that when the adjustment knob controls the first locking unit to retract, the pad can be driven to slide along the slide rails, thereby smoothly and quickly adjusting the height of the pad.

Description

Seat backrest and headrest adjustable height structure

The invention relates to the technical field of furniture, in particular to the structure of a seat such as a lumbar cushion and a headrest cushion, and has the function of adjustable height position.

People are comfortable in riding the chair, and the function design of the seat is constantly updated according to ergonomics. For example, the seat can be adjusted in height, the seat is provided with a lumbar cushion on the back of the seat, and the lumbar cushion is for the back of the back to provide a lumbar support. To relieve the pressure on the spine and prevent discomfort due to improper sitting posture, such as the new patent case of certificate number M368366 "Recumbent structure of the seat of the seat" (hereinafter referred to as: Patent Prosecution Case 1), which is the waist of the seat The support body is provided with a support portion, and the support portion is inserted through a longitudinal hole. The hole is recessed on the two sides of the hole in the front direction, and the two convex portions of the thrust pushing assembly are allowed to cut into the spacing. The receiving portion further has a truncated ring groove recessed on the outer peripheral edge of the longitudinal hole of the backrest main body to allow the pressing member to be accommodated therebetween; thereby, the lumbar portion disposed between the backrest main body is adjusted by the hand, and is pressed by the hand. The pressing component on the rear side of the backrest body drives the pushing assembly to move the two convex portion bearing portions to adjust the height to the pressing component to adjust the waist height.

Although the patent citation case allows the lumbar support to easily adjust the height position, the lumbar support and the push-on assembly are inserted and joined by a connecting piece, and one end of the connecting piece is screwed to the lumbar support, so the lumbar support and the back of the chair There is only a single point of joint between the joints. Since the human body is seated in the seat, the posture is not moving for a long time, and the body is adjusted in the posture, and the connection between the waist and the back of the chair presents a single point type of the cross-sectional area of the connecting piece, so the lumbar support will be shaken with the posture adjustment or even the seat movement. The occupants feel that the cushioning of the lumbar support is not stable enough, resulting in psychological discomfort; in addition, the single point of the lumbar support combined with the back of the chair is threaded, and the lumbar support is squeezed by the human body for a long time. The external force is difficult to avoid the loosening of the threaded joint, and the structural stability has potential instability.

The inventors of the present invention have intensively studied and developed in view of the foregoing problems. Therefore, the main object of the present invention is to provide a height adjustment structure for a lumbar support and a headrest of a seat, which is mainly a connection structure between a seat back and a pad. The contact area is larger and more stable, different from the previous single-point connection type, and the structure is simple, the operation is simple, and the waist or head support effect is better.

In order to achieve the foregoing objects, the technical means for the present invention is to provide a lumbar support and a headrest adjustable height structure of a seat, which comprises: a fixing set for fixing to a seat back, which comprises a a positioning seat and an adjusting button; wherein one side of the positioning seat is fixed to the seat back bracket, the positioning seat is opposite to the side of the seat back, and a stopping portion is disposed, and a sliding rail is disposed on each side of the stopping portion The stopping portion is connected to the adjusting button inserted from the back side of the chair, and the first locking portion is elastically stretchable at one end of the adjusting button; thereby controlling the first locking portion by operating the adjusting button Elastically extending and retracting; a sliding group for fixing to the spacer, which is provided with a base for slidingly sliding to the fixing group, wherein the base has longitudinal grooves on both sides for corresponding sliding a plurality of second clamping portions are disposed on the pedestal of the fixed group, and the second clamping portion is disposed at a distance from the base for engaging and positioning the first locking portion, and the first locking portion is contracted. When it is back, the card is released to adjust the height.

Therefore, according to the technical means of the present invention, a brief description of the functions that can be obtained by the present invention is as follows: The present invention is mainly provided in a fixed set of a seat back, a sliding group is provided, and a first locking part of the adjusting button of the fixed group is utilized. The second clamping portion of the sliding group is positioned as a positioning, and the first locking portion is pulled back to the second clamping portion, so that the spacer and the sliding group can be quickly moved to the sliding rail by the movement of the sliding rail Suitably, the first clamping portion is repositioned to position the second clamping portion of the suitable position to determine the position of the spacer; since the spacer uses the sliding fit of the sliding slot and the sliding rail, the adjustment shifting operation is smoother Sensitive speed, especially combined with better stability; this is the longitudinal sliding fit of the chute and the slide rail, which effectively limits the lateral sway of the left and right sides of the cushion, so that regardless of the user's riding posture, it can be stable without shaking, so The occupants are comfortable and comfortable, the stability of the combination is long-lasting, and it is not easy to loosen due to long use time, which is quite practical.

The invention relates to a lumbar support and a headrest adjustable height structure of the seat. As shown in the first figure, the seat back (11) is provided with a cushion (30) which can slide up and down, the cushion body (30) can be a lumbar cushion.

Referring again to Figures 1 and 2, the chair (10) includes a seat back (11), and the seat back (11) is covered with a seat back surface (13) on the outside of the seat back bracket (12), and the seat back The bracket (12) is connected with a plurality of laterally extending rods (121), and a fixed group (40) including an adjusting knob (50) is disposed on the connecting rod (121), and the back surface layer (13) is disposed in two longitudinal directions. The long hole (14), the sliding rail (43) of the fixing group (40) exposes the long hole (13), and a sliding group (60) is disposed on one side of the spacer (30), whereby the sliding group (60) corresponds to sliding A slide rail (43) is provided on the fixed group (40) for adjusting the height position of the spacer (30).

Further, in conjunction with the second and third figures, a specific preferred embodiment of the sliding group (60) and the fixed group (40) is illustrated; wherein the fixing group (40) includes a positioning seat (41) and an adjustment button (50). ). The positioning seat (41) is formed by stamping, and the back side of the positioning seat (41) is welded and fixed to the post (121) of the seat back (11) for the fixing group (40). The joint back (11) is fixed, and the positioning seat (41) is fixed at the position of the post (121), and is a relatively concave inner groove (42) in the direction of the spacer (30), and is located in the inner groove (42). The two sides are relatively high-traveling rails (43), and a hollow-shaped stopper (44) protrudes from the center of the inner end surface of the inner groove (42), and the hollow portion of the stopper portion (44) is provided with internal threads. (441), and the extension portion (44) extends out of the axial length without protruding beyond the slide rail (43) for the stop portion (44) for the adjustment knob (50) to be assembled therein; the adjustment knob (50) As shown in Figures 3 and 4, one end is a button portion (51) having a spring (52) therein for pressing the button portion (51) to interlock a first cam portion (54). The other end is an externally threaded connecting portion (53), the first engaging portion (54) is axially extended from the button portion (51) beyond the connecting portion (53) and exposed for a length; The adjusting button (50) is inserted into the rear side of the seat back (11), and the connecting portion (53) is threadedly engaged with the internal thread (441) of the stopping portion (44) to be fixed. Shaped movable, so that the adjustment knob (50) through the stopper (44) to support positioning, they serve pressing adjustment knob (50) connected to the movable first clamping portion (54) is formed extended or retracted state.

The sliding group (60) is provided with an elongated base (61) corresponding to the fixed group (40) as shown in the second and third figures, wherein the base (61) is longitudinally two The side is a side edge (631), the side edge (631) is bent inwardly to form a hollow sliding groove (63) therein, and the base (61) is closed at the upper end (62) for closing The upper end of the chute (63) is open to prevent the sliding group (60) from sliding downward beyond the stroke and lacking positioning, and the lower end is an open end (621) so that the open end (621) allows the chute (63) to be aligned. The slide rails (43) are inserted into the base, and the base (61) is provided with a plurality of second clamping portions (65) spaced apart in the longitudinal direction, and the second locking portion (65) is perforated so as to correspond to the first shape of the shaft. The locking portion (54) protrudes into the card, and a plurality of protruding pieces (66) are protruded outside the side edge (631), whereby the protruding piece (66) is screwed and fixed to the pad (30) toward the seat back (11). The side surface thus combines the sliding group (60) with the spacer (30), and the fixing group (40) is coupled to the seat back (11), as shown in Figs. 4 and 5.

Using the embodiment as shown in Figures 5, 6, and 7, the first engaging portion (54) of the button portion (51) extends into the second locking portion (65) if the height of the spacer (30) is to be adjusted. , as long as the button portion (51) is stretched, the first clamping portion (54) is elastically pulled back and retracted into the interior of the connecting portion (53), so the second locking portion (65) is withdrawn, and the first, When the two clamping portions (54) (65) are inserted and locked, the spacer (30) can be pulled up or down, especially as shown in Fig. 4, the sliding slot (63) is along the sliding rail ( 43) Sliding up and down, so that the pad (30) can move up and down smoothly without being easy to shake, the effect is more sensitive, and it can suppress the possibility of the pad (30) shaking from side to side, and can relax when it is suitable for the height position. The adjusting button (50) is configured such that the elastic restoring force causes the first engaging portion (54) to protrude beyond the connecting portion (53), and the second locking portion (65) that is inserted into the position to be adjusted can be inserted. The positioning position is clamped, so the height and position of the adjusting pad (30) of the present invention are practical and convenient.

As for Fig. 8, which is another preferred embodiment, the headrest can also be applied to the structure of the present invention. A recess (15) is recessed on the top side of the chair back (11) of the chair (10), and a post (151) is laterally disposed between the recesses (151) for mounting the fixing group (40), and the headrest The form of the pad (301) is sized to receive the recess (15), and the sliding group (60) is coupled to the back side, and the pad (301) is slidably engaged with the slide rail (43) in the same manner, the first card is formed. The portion (54) is clamped to the second clamping portion (65), so that the spacer (301) can be slid up and down along the sliding rail (43) to adjust the height, and the adjusting button (50) is used to clamp the positioning cushion. (301) The adjusted position.

The above embodiments are merely illustrative of the technology of the present invention and its effects, and are not intended to limit the present invention. Any person skilled in the art can modify and change the above embodiments without departing from the technical spirit and spirit of the present invention. Therefore, the scope of protection of the present invention should be as listed in the patent application scope mentioned later. .

(10). . . chair

(11). . . Chair back

(12). . . Backrest bracket

(121) (151). . . Arbors

(13). . . Back surface

(14). . . Long hole

(15). . . Groove

(30). . . Substrate

(301). . . Substrate

(40). . . Fixed group

(41). . . Positioning seat

(42). . . Lane

(43). . . Slide rail

(44). . . Stop

(441). . . internal thread

(50). . . Adjustment button

(51). . . Button

(52). . . spring

(53). . . Connection segment

(54). . . First card department

(60). . . Sliding group

(61). . . Pedestal

(62). . . Closed end

(621). . . Open end

(63). . . Chute

(631). . . Side edge

(65). . . Second card department

(66). . . Tab

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a preferred embodiment of the present invention.

Figure 2 is a perspective exploded view of the pad and the back of the preferred embodiment of the present invention.

Figure 3 is a perspective exploded view of the fixed group and the sliding group of the preferred embodiment of the present invention.

Figure 4 is a top cross-sectional view of a preferred embodiment of the present invention.

Figure 5 is a side cross-sectional view of a preferred embodiment of the present invention.

Figure 6 is a side elevational cross-sectional view (I) of the adjustment operation of the preferred embodiment of the present invention.

Figure 7 is a side elevational cross-sectional view (ii) of the adjustment operation of the preferred embodiment of the present invention.

Figure 8 is a perspective exploded view of another preferred embodiment of the present invention illustrating the implementation of a pad in the form of a headrest.

(10). . . chair

(11). . . Chair back

(12). . . Backrest bracket

(121). . . Arbors

(13). . . Back surface

(14). . . Long hole

(30). . . Substrate

(40). . . Fixed group

(43). . . Slide rail

(50). . . Adjustment button

(54). . . First card department

(60). . . Sliding group

(62). . . Closed end

(65). . . Second card department

(66). . . Tab

Claims (10)

The utility model relates to a lumbar support and a headrest adjustable height structure, which comprises: a fixing group for fixing to a seat back, which comprises a positioning seat and an adjusting button; wherein the positioning seat is fixed to the back of the seat a bracket, the positioning seat is opposite to the back of the seat, and a stop portion is disposed on each side of the stop portion, and the stop portion is respectively provided with a adjusting button inserted by the back side of the seat. a first locking portion that is elastically stretchable at one end of the adjusting button; thereby controlling the adjusting button to control the elastic expansion and retraction of the first locking portion; and a sliding for fixing to the spacer a pedestal that is slidably disposed on the fixed group, wherein the two sides of the pedestal are longitudinally sliding grooves for correspondingly sliding the sliding rails on the fixed group, and the pedestals are spaced longitudinally The second clamping portion is disposed to extend and lock the first locking portion, and the first locking portion is retracted to release the locking state to adjust the height. The lumbar support and the headrest of the seat according to claim 1 are adjustable in height, and the cushion is a lumbar cushion, and the position of the cushion is at the lower side of the seat back. The lumbar support and the headrest of the seat according to claim 2, wherein the seat back is covered with a seat back surface on the outer side of the seat back bracket, and the seat back bracket is connected with a lateral support. The rod and the support rod are fixed for the positioning seat of the fixed group. The lumbar support and the headrest of the seat according to claim 3 are adjustable in height, and the seat back is provided with two longitudinal long holes, and the slide rails of the fixed group are exposed to the long holes. The lumbar support and the headrest of the seat according to claim 1 are adjustable in height. The positioning seat is formed by stamping, and the back side of the positioning seat is welded and fixed to the seat back bracket, and the positioning seat is fixed at the position. The direction of the pad is a relatively low concave inner groove, and the two sides of the inner groove are relatively high sliding rails, and the inner end surface of the inner groove protrudes into a hollow stopper portion, and the stopping portion is hollow. The inner side is provided with an internal thread, and the extending portion of the stopping portion does not protrude beyond the sliding rail, and the stopping portion is screwed and fixed for the corresponding position of the adjusting button. The lumbar support and the headrest of the seat according to claim 1 are adjustable in height. The base of the sliding group has an elongated body, and the upward end of the base is a closed end for closing the chute. The upper end is open, the lower end is an open end for mounting the alignment rail, and a plurality of protrusions are protruded from the outer side of the base, and the protruding piece is screwed and fixed to the spacer. The lumbar support and the headrest of the seat of claim 1, wherein the first locking portion has a protruding shaft shape, and the second locking portion has a perforated shape so as to correspond to the first The carding part is stuck into the card. The lumbar support and the headrest of the seat according to claim 1 are adjustable in height, and the upper end of the seat back can be mounted with a cushion, and the cushion is a headrest. The lumbar support and the headrest of the seat according to claim 8 are adjustable in height, and a recess is recessed on the top side of the seat back, and a post is laterally arranged between the recesses for mounting the fixed group. The pad is placed in the groove, and the sliding group is coupled to the back side, and the fixing group for the pad is slidably engaged with the sliding group, and the first clamping portion is engaged with the second clamping portion. The lumbar support and the headrest of the seat of claim 1, wherein the first locking portion has a protruding shaft shape, and the second locking portion has a perforated shape so as to correspond to the first The carding part is stuck into the card.