CN2112318U - Chair with lifting mechanism - Google Patents

Abstract

The utility model relates to a chair with lifting mechanism, which is the lifting mechanism for a movable chair, comprising a hollow tube whose bottom side can be sheathed in the base of the chair, a chair face bottom screw rod whose top end forms a joint and can be sheathed with the chair, a cap sleeve which can be screwed in the screw rod and covered in the hollow tube, balls, fixing sheets of the balls, two pieces of ball shims which can prevent abrasion, etc., wherein, a plurality of tilters with inclination which are equidistant are respectively arranged at the outer edge of the tube body of the hollow tube, and the tilters make the hollow tube sheath in the base of the chair conveniently, and the hollow tube isn't easy to be taken out. Two screw threads are pressed into tabular by machines at the appropriate place where is at the lower end of the screw rod, and the cap sleeve can be stopped automatically when the cap sleeve is spirally combined to the place. The chair with lifting mechanism has the characteristics of convenient assembly, good durability, automatic stop, etc.

Description

Chair with lifting mechanism

Seat riser is the elevating mechanism of sliding seat, belongs to field of furniture.

Conventional seat elevating mechanism (referring to Fig. 1) usually by a bottom side can be inserted in seat base 1 ' hollow tube 2 ', one top be formed with joint and can be socketed on screw rod 3 bottom the chair surface ', one can screw in screw rod and can be covered on the cap sleeve 4 of hollow tube ' wait assembly to form, wherein cap sleeve 4 ' and screw rod 3 ' be provided with dig the pad 5 that is provided with groove and is equipped with ball ', screw rod 3 ' on then offer a groove 31 that is not attached to the bottom side ', the elevating mechanism of this structure has two shortcomings, at first when its pad 5 ' placing hollow tube 2 ' the top after, then owing to utilizing cap sleeve 4 ' when adjusting chair height with screw rod 3 ' be screwed, the ball of its pad 5 ' interior is at long-time and cap sleeve 4 ' reach hollow tube 2 ' contact, easily cause cap sleeve 4 ' and hollow tube 2 ' wearing and tearing, secondly, hollow tube 2 ' external diameter since with seat base 1 ' internal diameter identical, so not only on making, will meet its specification, when actual assembled, also very easily cause assembler's assembling inconvenience.Also has another kind of seat riser (referring to Fig. 2), include seat base 1 equally "; hollow tube 2 ", screw rod 3 " and cap sleeve 4 " waits member, with aforementioned structure different is blank pipe 2 " top end face be arranged with several holes 21 " therein, this hole 21 " in can insert ball 22 " for cooperating, and ball 22 " on can cover a ball pad 23 ", the appropriate location that utilizes clasp 5 " to fasten screw rod 3 " reaches the purpose that card ends, this kind structure is because of hollow tube 2 " a ball pad 23 has been set up on the top ", drawbacks such as so cap sleeve 4 " can not be worn; assemble inconvenience but exist equally; hollow tube 2 easy to wear ", to block with clasp 5 in addition and end, so screw rod 3 " the manufacturing moulding time must dig establish one with clasp 5 " groove of big small-bore, in the manufacturing moulding, bother like this, be difficult for, also relatively increase its clasp 5 " cost; do not meet its economic benefit; also have at cap sleeve and ball; still leave gap (shown in the A of Fig. 7) between pad; its engaging is not really tight; very easily cause when the user is sitting on the seat, screw rod easily has the worry of slip.

The purpose of this utility model provides a kind of improved seat riser, and this mechanism is easy to assembly, and durability is good and can block automatically and end.

The purpose of this utility model is achieved in that its main member comprises that a bottom side can be inserted in the hollow tube in seat base, one top is formed with joint and can be socketed on screw rod bottom the chair surface, one can screw in screw rod and is covered on the cap sleeve of hollow tube, two ball pads and number ball and stator thereof, spiral shell has the screw rod lower end of cap sleeve to be inserted in the ball pad one by one, number ball and stator thereof, behind another ball pad, inserting a bottom side has been inserted in the hollow tube of seat base, wherein, body outer rim at hollow tube sets up the several tiltlers that are equidistant summary tool gradient separately, inwardly be formed with flange in the cap sleeve lower end, groove tabling with the hollow tube upper end, and make cap sleeve and ball stator, no gap produces between the ball pad, and inciting somebody to action wherein in suitable place, the lower end of screw rod with machine, two screw threads are pressed into flat.

The hollow tube of this mechanism is because of being provided with equidistant slightly several tiltlers of tool gradient at its body outer rim branch, so hollow tube can be sheathed easily with seat base and be difficult for taking out, the flange of other cap sleeve lower end and the groove tabling of hollow tube, make no gap generation between cap sleeve and ball stator, ball pad, so can not make screw rod that the doubt of slip is arranged, have easy to assembly, good endurance and can block automatically and advantage such as end.

Be described further with reference to the accompanying drawings:

Fig. 1 is the three-dimensional exploded view of existing seat riser.

Fig. 2 is the three-dimensional exploded view of another existing seat riser.

Fig. 3 is a three-dimensional exploded view of the present utility model.

Fig. 4 is an assembled sectional view of the present utility model.

Fig. 5 is the whole textural association cutaway view of seat rising tune of the present utility model.

Fig. 6 is the combination section between cap sleeve of the present utility model and ball and stator thereof, ball pad.

Fig. 7 is the combination section between the cap sleeve of existing seat and ball and stator thereof, ball pad.

Referring to Fig. 3, the utility model comprises that mainly a bottom side can be inserted in hollow tube 2, one tops of seat base 1 and be formed with joint and can be socketed on screw rod 3, bottom the chair surface and can screw in screw rod 3 and can be covered on cap sleeve 4, two ball pads 5,6 and the number ball and the stator 7 thereof of hollow tube 2.Earlier cap sleeve 4 is screwed into screw rod 3, is inserted in ball pad 5, number ball and stator 7 thereof, ball pad 6 more respectively, at last screw rod 3 is put into the hollow tube 2 that inserts seat base 1.Hollow tube 2 inserts seat base 1 for convenience, and difficult again the taking-up is provided with the several tiltlers 21 that are equidistantly and omit the tool gradient at hollow tube 2 body outer rims branch; Inwardly be formed with in cap sleeve 4 lower ends flange 41 can with hollow tube 2 upper end grooves 22 tablings, and make cap sleeve 4 and ball and stator 7 thereof, 5,6 no gaps of two ball pads produce (as shown in Figure 6), so screw rod 3 does not have loosening worry can not make the user be sitting on the seat time.Can utilize machine that two screw threads are pressed into bluff body 31 at screw rod 3 lower end appropriate locations, cap sleeve 4 be screwed togather to block automatically to herein the time and end.

Referring to Fig. 4, Fig. 5, the height adjustment of seat is to realize by the cap sleeve 4 and the height that screws togather of screw rod 3, when cap sleeve 4 screws togather flat body 31 to screw rod 3, just by automatic fastening.

Claims (1)

1, a kind of seat riser, include a bottom side and can be inserted in hollow tube in seat base, one top is formed with joint and can be socketed on screw rod bottom the chair surface, one can screw in the cap sleeve and the ball that also can be covered on hollow tube in screw rod, it is characterized in that being inserted in the hollow tube 2 of seat base, its body outer rim sets up the several tiltlers 21 that are equidistantly and omit the tool gradient separately, ball and going here and there respectively up and down of stator 7 thereof that string is placed on the screw rod 3 have ball pad 5, ball pad 6, place screw rod 3 upper ends in the hollow tube 2 to screw in cap sleeve 4, the appropriate location of lower end with machine will be wherein two screw threads be pressed into flat body 31, wherein to be provided with flange 41 chimeric mutually with the groove in the outside, hollow tube upper end inboard, cap sleeve 4 lower end.

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