CN204146670U - The chair-back adjusting device of chair tool - Google Patents

Abstract

The utility model proposes a kind of chair-back adjusting device of chair tool, the chair-back adjusting device of described chair tool includes a seat support Gong taking, is arranged at described seat support and described chair back adjusting device for the chair back and leaned on, wherein: described seat support bottom side is in conjunction with a pedestal, described pedestal sets firmly a connecting support, and described connecting support side is provided with an installation portion to link an adjusting device; And the described chair back each side extending towards described seat support direction on the downside of it one stretches frame, and described two stretch between frame and have an interval, the adjustment of the utility model chair back is quite convenient, quick, knob rotate to loosen state time, only need rotate described adjusting lever, can Timing Belt moving gear and toothrow on the interlock chair back, reach the object that the chair back moves forward and backward, the operability of adjustment is easy and quick.

Description

The chair-back adjusting device of chair tool

Technical field

The utility model is a kind of technical field relating to furniture, especially relates to take spacing between a kind of adjustable chair back and seat support, is applicable to the adjusting device of various height back-resting.

Background technology

Chair tool develops out several functions kenel along with the needs taken, chair tool now mostly has the Height Adjustment of seat support, the even relative position of adjustable chair back and seat support, as No. I333842nd, Taiwan " chair " Patent Case, it mainly comprises pillar, seat on described pillar, the backrest in described seat rear end of a chair leg body, on described chair leg body; Described backrest comprises a backrest and at least one rear bar extended forward from described backrest lower end, and described rear bar locks to described seat, and described rear bar can forward and downwards, or backward and move up; Wherein, described rear bar comprise one from the lower end of described backrest forward deflection deflection part, the extension part than described deflection part leniently deflection under 45 degree is being less than relative to the surface on floor with a pair, described etc. extend the position that part slide anteroposterior changes described backrest, when described rear bar forward slip, described pillar be placed in described to extension part between.

Though the front case of described explanation provides the backrest of chair to forward and backward slip, can reach the function changing itself and seat support relativeness position thus, backrest adjustment lacks " fine setting ", because case before described explanation utilizes set of knobs to wear an engagement component, the chimeric projection of recycling engagement component engages with the engaging groove of chair pedestal is concavo-convex, reach the adjustment positioning action forming the chair back, the front case of described explanation is that compartment of terrain arranges several engaging groove on the stroke of adjustable backrest, after loosening removal when knob, engagement component can be made to be displaced to the engaging groove of applicable position, again knob is tightly given fixed bit, therefore the front case illustrated is " paragraph type " spacing adjustment of a kind of " with people with regard to chair ", but but cannot meet user now and the chair back be made the demand of fine setting location.

Summary of the invention

The utility model main purpose is at the chair-back adjusting device providing a kind of chair tool, the chair back of chair tool is mainly implemented with the kenel adjusted without section by it, the dependence making the chair back can carry out " with chair just people " according to the height of user adjust and the location that lock, reaches thus to operate facility, finely tune and adjust function accurately.

In order to reach aforesaid object, the technological means that the utility model uses is the chair-back adjusting device being to provide a kind of chair tool, it comprises a seat support Gong taking, is arranged at described seat support and described chair back adjusting device for the chair back and leaned on, wherein: described seat support bottom side is in conjunction with a pedestal, described pedestal sets firmly a connecting support, and described connecting support side is provided with an installation portion to link an adjusting device; And the described chair back being each side extended with towards described seat support direction on the downside of it one stretches frame, and described two stretch between frame and have an interval;

Described adjusting device be comprise a seat of honour, seat, one group of driven gear, one group be arranged at the toothrow stretched on frame, a knob; The wherein said seat of honour is the installation portion bottom side being fixedly arranged on described connecting support, and the described seat of honour is provided with lockhole in, and both sides are laterally run through and arranged a perforation, and inside, the described seat of honour is provided with and forms through tank with boring a hole; Described lower seat respectively arranges a chute in both sides, stretches connecing of frame establish with the described chair back of correspondence, and described lower seat bottom side is provided with embedding portion on, and described embedding portion forms the corresponding inclined plane kenel being divided into four high low head regions;

Described driven gear has two at least, be hold respectively stretch in the described seat of honour tank in, one adjusting lever group is through at the described perforation at the described seat of honour, and two driven gears described in consolidation, can driven gear described in synchronous axial system for the described adjusting lever of rotation, the teeth portion of described driven gear is stretched in described chute, stretches after frame stretches into described chute by described, described driven gear can on described toothrow engaged transmission;

Described knob is that circle seat dials discoid body, rotatably be combined in the downside of described lower seat, the end face of the corresponding described lower seat of described knob is set to embedding portion, and on the corresponding described lower seat in described lower embedding portion, embedding portion presents half-and-half concavo-convex correspondence and is divided into the inclined plane kenel in four high low head regions; By rotating described knob, make described lower embedding portion can reach loosening state to upper embedding portion, described upper and lower seat is made to form the space of crack activity, and stretch frame toothrow described in being engaged in by driven gear described in described adjusting lever interlock, make to produce adjustment of displacement effect between the sliding described chute stretching in described upper and lower seat of the chair back.

By learning above, the utility model, compared to prior art, has following effect:

1. the utility model provides between the chair back and seat support is adopt the function without section adjustment position, therefore the chair back can be made to reach the effect of fine setting accuracy, through the rotation in portion embedding under described knob, can reach the upper embedding portion of lower seat and loosen removal or be tight against the function of laminating, and the frame of stretching of the described chair back is that front and back slippage is in described chute, therefore can be located by any point in slippage stroke, the chair back possesses the precise function without section adjustment.

2. the knob of the utility model adjusting device and lower seat be each formation have high low head regional dip face one on embedding portion and once embedding portion, upper and lower embedding portion is the corresponding kenel in biconvex regional dip face when tight chimerism, when rotating knob start, the position that under can changing knob, embedding portion contacts with embedding portion on lower seat, make the inclined plane of both high low heads produce absent-mindedness or be tight against the state of laminating, adjusting device can be manipulated rapidly to adjust the chair back, therefore the utility model operation has more convenience.

3. the adjustment of the utility model chair back is quite convenient, quick, knob rotate to loosen state time, only need rotate described adjusting lever, can Timing Belt moving gear and toothrow on the interlock chair back, reach the object that the chair back moves forward and backward, the operability of adjustment is easy and quick.

Accompanying drawing explanation

Fig. 1 be the utility model preferred embodiment look up angle stereogram.

Fig. 2 is the solid component exploded view of the utility model preferred embodiment.

Fig. 3 is the knob of the utility model preferred embodiment and lower seat exploded perspective schematic diagram.

Fig. 4 is knob and another angle decomposition schematic perspective view of lower seat of the utility model preferred embodiment.

Fig. 5 is the schematic side view of the seat back lock state of the utility model preferred embodiment.

Fig. 6 is that the chair back of the utility model preferred embodiment unlocks the schematic side view of state.

Fig. 7 is the schematic side view that the chair back of the utility model preferred embodiment adjusts in low level.

Fig. 8 is the schematic side view that the chair back of the utility model preferred embodiment adjusts in a high position.

Fig. 9 is another enforcement schematic perspective view of knob of the utility model preferred embodiment.

primary clustering label

(the utility model)

(10) seat support (11) pedestal

(12) connecting support (121) group hole

(122) installation portion (13) pillar

(14) chair pin (20) chair back

(21) downside, upside (22)

(23) frame (24) toothrow is stretched

(30) adjusting device (31) seat of honour

(32) interior lockhole (33) perforation

(34) seat under tank (35)

(351) through hole (352) deep trouth

(36) the upper embedding portion of chute (37)

(371) first is domatic (372) second domatic

(373) the 3rd domatic (374) the 4th is domatic

(40) driven gear (41) adjusting lever

(411) shaft (50) knob

(51) (511) first embedding, embedding portion under

(512) second embedding (513) the 3rd embedding

(514) the 4th embedding (52) consolidation holes

(53) bolt.

Detailed description of the invention

In order to there be understanding clearly to technical characteristic of the present utility model, object and effect, now contrast accompanying drawing and detailed description of the invention of the present utility model be described:

The utility model is a kind of chair-back adjusting device of chair tool, and as shown in Figure 1, 2, described chair tool is comprise a seat support (10), a chair back (20) and an adjusting device (30) substantially; By the described adjusting device (30) be linked between seat support (10) and the chair back (20), the chair back (20) can be made relatively described seat support (10) cunning of reaching far and near displacement can to stretch corrective action, be applicable to the chair tool of various height back-resting.

Please continue referring to Fig. 1, shown in 2, wherein said seat support (10) comprises a pedestal (11), one connecting support (12) being fixedly arranged on pedestal (11) bottom side, described connecting support (12) side is provided with one group of hole (121), one pillar (13) is extended through to connect in described group of hole (121) and with connecting support (12) and establishes, one chair pin (14) is linked to described pillar (13) below, connecting support (12) opposite side is the installation portion (122) installed for an adjusting device (30), and the described chair back (20) have back-resting one on the upside of (21) and for engage one on the downside of (22), each side being extended with one towards described seat support (10) direction and stretching frame (23) of described downside (22), described two stretch frame (23) laterally between there is an interval and mutually in parallel, stretch shape that frame (22) extends and direction conform to the radian combination of shape and state of driven gear (40) in inscribed circle,

Described adjusting device (30) be comprise a seat of honour (31), seat (35), one group of driven gear (40), one group be arranged at the toothrow (24) stretched on frame (22), a knob (50), the wherein said seat of honour (31) is installation portion (122) bottom side being fixedly arranged on described connecting support (12), the described seat of honour (31) is provided with lockhole in (32), as shown in Fig. 2, Fig. 5, both sides horizontal running through arranges a perforation (33), and the another described seat of honour (31) inside is provided with and forms through tank (34) with bore a hole (33), and described lower seat (35) the extension track place that each correspondence stretches frame (23) in both sides is respectively arranged with a chute (36), after the seat of honour (31) and lower seat (35) combine and lock, chute (36) periphery can form described shelves edge, the bottom side of another lower seat (35) can be as shown in Figure 3, the interior lockhole (32) of the corresponding seat of honour of described lower seat (35) (31) is provided with a through hole (351), the deep trouth (352) of the recessed circle in center, the upper embedding portion (37) of deep trouth (352) inner process one in double nahlock shape end face, upper embedding portion (37) end face is centered by through hole (351), correspondence is divided into the inclined plane in four high low head regions, to overlook in chair pin (14) in counterclockwise defining, in first raised domatic (371) respectively, in second gradually low domatic (372), in the raised the 3rd domatic (373), in the 4th gradually low domatic (374),

Described driven gear (40) has two, be hold respectively stretch in the described seat of honour (31) tank (34) in, the shaft (411) of described adjusting lever (41) crosses via the perforation (33) of the seat of honour (31) and enters, wear and two driven gears (40) described in bonding, to guarantee that rotating described adjusting lever (41) just can make two driven gears (40) synchronous axial system simultaneously; Described lower seat (35) and the described seat of honour (31) are given being formed with a chute (36) passage after group establishes consolidation, described driven gear (40) teeth portion being mounted on the seat of honour (31) is stretched in described chute (36), stretch after frame (23) stretches into described chute (36) respectively when the chair back (20), described two driven gears (40) can between described toothrow (24) engaged transmission;

Described knob (50) is as Fig. 2, Fig. 3, shown in Fig. 4, it is that a circle seat dials discoid body, correspondence is installed in the deep trouth (352) of lower seat (35), the end face of the lower seat (35) of knob (50) correspondence is set to embedding portion (51), the end face of described lower embedding portion (51) also in a pair semicircle bulk, and first domatic (371) of the corresponding lower upper embedding portion of seat (35) (37), second domatic (372), 3rd domatic (373), 4th domatic (374), also the inclined plane kenel that correspondence is divided into four high low head regions is presented, in gradually low first embedding (511) respectively, in raised second embedding (512), in gradually low the 3rd embedding (513), in raised the 4th embedding (514), knob (50) central authorities are provided with a consolidation hole (52) to aim at the through hole (351) of lower seat (35), supply a bolt (53) consolidation and wear to be fixed in the interior lockhole (32) at the seat of honour (31), knob (50) is made to be incorporated into the control member of seat support (10) as the chair back (20).

As shown in Figure 4, Figure 5, when the chair back (20) is locked in seat support (10), described upper and lower embedding portion (37) (51)

It is raised in biconvex completely and the correspondence in concave-concave gradually low regional dip face, that is rotate described knob (50), the upper embedding portion (37) of the relatively described lower seat (35) in the lower embedding portion (51) of knob (50) is made to turn to the state of packing, namely described lower embedding portion (51) is in raised second embedding (512), 4th embedding (514) gradually upper embedding portion (37) by gradually low second domatic (372), 4th domatic (374) are towards being first raised domatic (371), 3rd domatic (373) rotate, use and reach biconvex raised second embedding (512) and first domatic (371), 4th embedding (514) fit tightly with the 3rd domatic (373) regional dip face, what make lower seat (35) and the seat of honour (31) live the chair back (20) in held tight stretches frame (22) state, and toothrow (24) engages to be equipped in driven gear (40).

As Fig. 4, shown in Fig. 6, if when wish adjusts the angle of the chair back (20) activity, then need to operate described adjusting device (30), first knob described in turn (50) is to a relative rotation angle (about 90 °), the lower embedding portion (51) of described knob (50) departs from the corresponding of the raised regional dip face of biconvex with the upper embedding portion (37) of lower seat (35), form the corresponding relation of relief region inclined plane according to this, even if also in raised second embedding (512), 4th embedding (514) in upper embedding portion (37) by raised first domatic (371), 3rd domatic (373) rotate oppositely gradually towards being second low domatic (372), 4th domatic (374) rotate, the corresponding relation making the raised regional dip face of biconvex return back to relief region inclined plane not fit tightly, make the inclined plane in four high low head regions can present movable space, now described lower seat (32) just has and forms one with the seat of honour (31) and no longer clamp the space of stretching frame (22), as Fig. 7, shown in Fig. 8, grip described adjusting lever (41) with hand again to rotate, two driven gears (40) synchronously original place rotation in the seat of honour (31) can be made, and engagement and interlock described in the chair back (20) toothrow (24) formed before, backward slippage, stretch frame (23) namely to slidably reciprocate along chute (36), because the toothrow (24) stretched on frame (23) is the teeth portion engaged transmission with driven gear (40), therefore the adjustment chair back (20) can be selected arbitrarily to low level near seat support (10), or be adjusted to a high position and away from seat support (10), or in shift motion any one, all can stop at any time, after position is determined, again as the drawing, rotate knob (50) to locking state, again allow, the regional dip face closely corresponding matching that lower embedding portion (37) (51) biconvex is raised, the chair back (20) can be locked in the state after adjustment angle, the utility model can stretch by the height of pillar (13), coordinate the slide displacement of the chair back (20) again, make the height of seat (10) and the position adjustment of the described chair back (20), chair tool is made to be applicable to the dependence at various height back.

Another the utility model is about lower embedding portion (51) end face of the lower seat (35) of knob (50) correspondence, also can present another and implement aspect, as shown in Figure 9, the inclined plane in the high low head region of described corresponding decile four, its end face can form the empty shape kenel of thread to form in gradually low first embedding (511), in raised second embedding (512), in gradually low the 3rd embedding (513), in raised the 4th embedding (514), this type of change in shape also can reach the inclined plane mating reaction in lower embedding portion (51) and the concavo-convex high low head region of upper embedding portion (37).

The foregoing is only the schematic detailed description of the invention of the utility model, and be not used to limit scope of the present utility model.Any those skilled in the art, equivalent variations done under the prerequisite not departing from design of the present utility model and principle and amendment, all should belong to the scope of the utility model protection.

Claims (7)

1. a chair-back adjusting device for chair tool, is characterized in that, the chair-back adjusting device of described chair tool includes a seat support Gong taking, is arranged at described seat support and described chair back adjusting device for the chair back and leaned on, wherein:

Described seat support bottom side is in conjunction with a pedestal, and described pedestal sets firmly a connecting support, and described connecting support side is provided with an installation portion to link an adjusting device; And the described chair back each side extending towards described seat support direction on the downside of it one stretches frame, and described two stretch between frame and have an interval;

Described adjusting device be comprise a seat of honour, seat, one group of driven gear, one group be arranged at the toothrow stretched on frame, a knob; The wherein said seat of honour is the installation portion bottom side being fixedly arranged on described connecting support, and the described seat of honour is provided with lockhole in, and both sides are laterally run through and arranged a perforation, and inside, the described seat of honour is provided with and forms through tank with boring a hole; Described lower seat respectively arranges a chute in both sides, stretches connecing of frame establish with the described chair back of correspondence, and described lower seat bottom side is provided with embedding portion on, and described embedding portion forms the corresponding inclined plane kenel being divided into four high low head regions;

Described driven gear has two at least, be hold respectively stretch in the described seat of honour tank in, one adjusting lever group is through at the described perforation at the described seat of honour, and two driven gears described in consolidation, can driven gear described in synchronous axial system for the described adjusting lever of rotation, the teeth portion of described driven gear is stretched in described chute, described in stretch after frame stretches into described chute, described driven gear can on described toothrow engaged transmission;

Described knob is that circle seat dials discoid body, rotatably be combined in the downside of described lower seat, the end face of the corresponding described lower seat of described knob is set to embedding portion, and on the corresponding described lower seat in described lower embedding portion, embedding portion presents half-and-half concavo-convex correspondence and is divided into the inclined plane kenel in four high low head regions;

Rotate described knob, make described lower embedding portion can reach loosening state to upper embedding portion, described upper and lower seat is made to form the space of crack activity, and stretch frame toothrow described in being engaged in by driven gear described in described adjusting lever interlock, make to produce adjustment of displacement effect between the sliding described chute stretching in described upper and lower seat of the chair back.

2. the chair-back adjusting device of chair tool as claimed in claim 1, it is characterized in that, described seat support comprises a pedestal, and one is fixed on the connecting support of pedestal bottom side with pedestal screw lock, and described connecting support side is provided with one group of hole, and opposite side is described installation portion.

3. the chair-back adjusting device of chair tool as claimed in claim 1, it is characterized in that, the described seat of honour is provided with lockhole in, described lower seat is provided with a through hole, described knob is provided with a consolidation hole, for a bolt by described through hole, and wears the interior lockhole being consolidated in the described seat of honour.

4. the chair-back adjusting device of chair tool as claimed in claim 1, it is characterized in that, the deep trouth of the recessed circle of described lower seat bottom side, be arranged in described deep trouth for described knob, described embedding portion is formed in described deep trouth, it is that circle seat dials discoid body, described embedding portion inclined plane is divided into totally four regions, upper and lower, left and right, to overlook in described chair pin in counterclockwise defining, be respectively in raised first domatic, in gradually low second domatic, domatic and in gradually low 4th domatic in the raised the 3rd.

5. the chair-back adjusting device of the chair tool as described in claim 1 or 4, it is characterized in that, the lower embedding portion of described knob is that first, second, third and fourth is domatic for embedding portion on corresponding described lower seat described, present the kenel of concavo-convex correspondence, be respectively in gradually low first embedding, in raised second embedding, in gradually low the 3rd embedding, in raised the 4th embedding.

6. the chair-back adjusting device of chair tool as claimed in claim 1, it is characterized in that, described adjusting lever has a shaft, and described shaft is that bonding fixes described two driven gears.

7. the chair-back adjusting device of chair tool as claimed in claim 1, is characterized in that, the lower embedding portion of described knob is that first, second, third and fourth is domatic for embedding portion on corresponding described lower seat described, and the end face in described lower embedding portion can form embedding kenel of the empty shape kenel of thread.