CN2495198Y - Improved chain feet supporting ring - Google Patents

Abstract

the utility model relates to an improved pedal ring for seats, wherein, a sliding groove which is parallel to the central axis of a hub is arranged on the side wall of the hub of one pedal ring; and a arc-shaped pressing sheet is arranged in the sliding groove; a clamp ring is assembled in the central hole of the hub; the side wall of the clamp ring is provided with a hatching ditch, so that the two arc-shaped ends of the pressing sheet respectively reach against the two sides of the hatching ditch; one end of the clamp ring is blocked by a flange at the upper edge of the central hole, while the other end is provided with a raised part which extends outward and is arranged at the lower end of the sliding groove; in addition, for a screw with a rotary button is locked in the side wall of the hub; whether the clamp ring clips a supporting pillar or not can be controlled by tightening or losing the rotary button, in particular, the clamp ring can bear even acting forces, so as to clip the supporting pillar more firmly.

Description

The foot-operated ring of the seat of improvement

Technical field

The utility model provides the foot-operated ring of a kind of seat structure-improved, particularly does improvement at the structure that can adjust foot-operated ring adjustable height, makes that foot-operated ring is more firm fixedly the time with the pillar of seat.

Background technology

Because the foot-operated ring of early stage traditional single leg high chair is all made solid form (that is the height of its foot-operated ring is nonadjustable), so build the greater may feel that when being seated knee bends is excessive and uncomfortable, and the more petite knee of may feeling when being seated of build is stretched too directly also uncomfortablely, thereby No. 96220561.3 Chinese patent of being applied for before this creator provides the lowering or hoisting gear that can adjust foot-operated ring height, the lowering or hoisting gear of this patent, be to be provided with a wheel hub at foot-operated ring center, in the centre bore of wheel hub, be provided with the clamp ring that a sidewall has profile groove, axially be provided with a chute in wheelboss side wall, and be provided with a press fixing piece in this chute, wheelboss side wall that should chute radially is provided with a screw and is screwed into a knob, after making the pillar of seat pass this clamp ring, nationality is by screwing or when unscrewing knob, whether to control this clamp ring, and then reach and adjust the adjustable height position of foot-operated ring at pillar to the clamping of pillar.

The shortcoming of above-mentioned patent is, its press fixing piece is straight form, therefore when the screw rod end that is combined in knob acts on this press fixing piece, the press fixing piece of its flat shape only can act on a bit of clamp ring outer surface, thus, bigger at the clamp ring sidewall deflection of profile groove one side, and the almost not distortion of the clamp ring sidewall of profile groove opposite side, cause clamp ring to be subjected to uneven strength, and then reduced the clamping force of clamp ring pillar.

So the utility model is improved the existing shortcoming of above-mentioned patent, clamp ring can more firmly be pressed from both sides pull in pillar with fixing foot-operated ring.

Summary of the invention

Main purpose of the present utility model is to provide a kind of foot-operated ring of seat of improvement, it is characterized in that doing improvement at the structure of press fixing piece, this press fixing piece is designed to arc shape, and after press fixing piece being combined in the chute of wheel hub, allow the arc two ends of press fixing piece contact at the profile groove both sides of clamp ring, can obtain average stressedly when allowing clamp ring be subjected to the press fixing piece application of force, and then the clamp ring sidewall of profile groove both sides is out of shape fifty-fifty and the folder pillar of pulling more firmly.

An of the present utility model purpose is to provide a kind of foot-operated ring of seat of improvement, and it is provided with sheath in the screw rod outer cover that is incorporated into knob, can protect screw flight to avoid being polluted, and more attractive in appearance.

Based on this, the foot-operated ring of the seat of improvement provided by the utility model is to be provided with one at a foot-operated wheelboss side wall that encircles to be parallel to the chute of wheel hub central axis, and inserts a curved press fixing piece in this cunning is poor; Combination has a clamp ring in being located at the centre bore of wheel hub, and the sidewall of this clamp ring is provided with a profile groove, makes the arc two ends of this press fixing piece be butted on the both sides of profile groove respectively; To be nationality be blocked in the upper limb of centre bore by flange to one end of clamp ring, and the other end then is provided with the protuberance that extends laterally, and makes this protuberance be positioned at the lower end of described chute, to avoid dropping with stopping this press fixing piece; Set and connect the screw that is pickled with grains or in wine to this cunning and lock a screw rod that is incorporated into knob at wheelboss side wall in addition, when the pillar of seat passes described clamp ring, and nationality is when screwing or unscrewing this knob, whether can control clamp ring pulls to the folder of pillar, especially when press fixing piece acts on clamp ring, can be so that clamp ring bears uniform active force and clamps pillar with more fastening.

Wherein, this clamp ring is respectively equipped with the protuberance that radially extends toward the outside with respect to the profile groove both sides of the other end of flange, after making that this clamp ring is inserted in the centre bore of described wheel hub, allow this two protuberance be positioned at described chute one end and avoid dropping out this chute in order to stop described press fixing piece.

Wherein, described screw rod is equipped with a sheath.

Description of drawings

Fig. 1 is combined in the embodiment stereogram of seat for foot-operated ring of the present utility model;

Fig. 2 is the three-dimensional exploded view of the utility model main element syntagmatic;

Partial sectional view when Fig. 3 A is a clamp ring relaxed state of the present utility model;

Fig. 3 B is that clamp ring of the present utility model is subjected to the clamping block effect and partial sectional view during deflated state;

Cutaway view when Fig. 4 is fixed in seat support strut for foot-operated ring of the present utility model.

Among the figure,

1 foot-operated ring 21 screw rods

10 wheel hubs, 3 sheaths

101 centre bores, 4 clamp rings

11 screws, 41 profile grooves

12 chutes, 42 protuberances

13 spokes, 43 flanges

2 knobs, 5 press fixing pieces

6 pillars

The specific embodiment

As shown in Figure 1, the foot-operated ring of the seat of improvement provided by the utility model mainly is the high chair that is applied to single leg design, foot-operated ring 1 is fixed on is used on the pillar 6 of supporting chair, and can adjust foot-operated ring 1 along pillar 6 risings or decline by rotation knob 2 by nationality, it is fixing to ride ring 1 again.

Consult shown in Fig. 2 and Fig. 3 A, foot-operated ring structure of the present utility model includes a foot-operated ring 1, one knob 2, one sheath 3, one clamp ring 4 and at least one press fixing piece 5: wherein, foot-operated ring 1 is that the periphery at an annular body is combined with plural spoke 13, and be provided with a wheel hub 10 in the center in the handing-over of those spokes 13, described wheel hub 10 has a centre bore 101, and be provided with a chute 12 that is parallel to its central axis in the madial wall of centre bore 101, the lower end of this chute 12 is an opening, and the upper end then is sealing: wheel hub 10 sidewalls that should chute 12 then are provided with a screw 11 that radially runs through inside and outside the sidewall.

Described clamp ring 4 is to have a cylindrical shell that is parallel to the profile groove 41 of its central axis with what the material with higher coefficient of friction (for example rubber) was made at sidewall, and be provided with flange 43 in an end of clamp ring 4, then be provided with the protuberance 42 that extends laterally with respect to profile groove 41 both sides of the other end of this flange 43; This clamp ring 4 is in not stressed nature, its external diameter is the internal diameters of several equalitys in centre bore 101, make clamp ring 4 to be inserted in the centre bore 101, and then make its flange 43 be blocked in the upper limb of centre bore 101, and allow its protuberance 42 be positioned at the lower end of described chute 12 by the top of wheel hub 10.

Described press fixing piece 5 is to make with the material with high strength and wearability, and it is shaped to see from the end looks curved form.The press fixing piece 5 of this arc is overlapped in people's chute 12 from top to bottom, and nationality stops press fixing piece 5 by described protuberance 42, drop out chute 12 (as shown in Figure 4) to avoid press fixing piece 5.Described knob 2 is combined with a screw rod 21; after this screw rod 21 passes the soft sheath 3 that a wall forms wrinkle shape; again screw rod 21 is locked the screw 11 of wheel hub 10; utilize this sheath 3 can protect screw rod 21 to avoid being subjected to the pollution of extraneous dust or impurity; and then cause screw rod 21 to lock back double thread generation wearing and tearing in the screw 11, and can allow whole vision more attractive in appearance.

Consult shown in Fig. 3 A, structure of the present utility model is when operation, when rotation knob 2 and after screw rod 21 is outwards withdrawed from, clamp ring 4 elasticity own can promote press fixing piece 5 and move toward the bottom of chutes 12, cause between clamp ring 4 and the pillar 6 and form relaxed state, promptly can allow this moment foot-operated ring rise or descend, to adjust the height of foot-operated ring along pillar 6.After adjustment was finished, then locking knob 2 again allowed screw rod 21 promote press fixing pieces 5, and then the opposite end that makes press fixing piece 5 presses profile groove 41 both sides of clamp ring 4, so can make 4 pairs of pillars of clamp ring 6 produce the more average application of forces and pressed from both sides and pull more firmly.

The above only is in order to explain preferred embodiment of the present utility model; be not that the attempt tool is done any pro forma restriction to the utility model; so; all have in that identical creation spirit is following do relevant any modification of the present utility model or change, all must be included in the category of the utility model intention protection.

Claims (3)

1, the foot-operated ring of a kind of seat of improvement, be to be provided with an axial chute at a foot-operated wheelboss side wall that encircles, wheelboss side wall that should chute is provided with a screw that radially is through to this chute, combination has a clamp ring in described wheel hub centre bore, the sidewall of this clamp ring is provided with a profile groove, and the periphery of clamp ring one end is provided with flange, make this flange be blocked in the upper limb of described centre bore, combination has a press fixing piece in described chute, one screw rod that is incorporated into knob is locked this screw, it is characterized in that: this press fixing piece is to be arc shape, and makes the two ends of this arc shape act on the outside, relative both sides of the profile groove of described clamp ring.

2. by the foot-operated ring of the seat of the described improvement of claim 1, it is characterized in that: wherein, this clamp ring is respectively equipped with the protuberance that radially extends toward the outside with respect to the profile groove both sides of the other end of flange, after making that this clamp ring is inserted in the centre bore of described wheel hub, allow this two protuberance be positioned at described chute one end, avoid dropping out this chute in order to stop described press fixing piece.

3. by the foot-operated ring of the seat of the described improvement of claim 1, it is characterized in that: wherein, this screw rod is equipped with a sheath.

Images