A kind of swivel chair chassis
Technical field
The present invention relates to a kind of swivel chair, particularly a kind of swivel chair chassis.
Background technology
The swivel chair chassis is a vitals that is contained in swivel chair seat cushion below, the up-down of seat cushion, and the reclining angular adjustment of backrest all relies on the chassis to accomplish; In the prior art; In view of the restriction of factors such as the narrow and small and structural complexity in inner space, chassis, backrest reclining angular adjustment has level, can only realize the adjusting of two-stage to Pyatyi at present; That is to say and to regulate in predetermined several angles; And because people's height is different, everyone is also different to the impression of each angle comfort level of backrest, so can not satisfy proprietary needs.
Summary of the invention
The present invention has overcome above-mentioned deficiency of the prior art; A kind of swivel chair chassis of realizing step-less adjustment and can realize at an arbitrary position locking is provided; Make the difference of the power that backrest can apply according to the people realize the adjusting of different angles, very convenient, improved comfort level.
Technical scheme of the present invention is achieved in that
A kind of swivel chair chassis comprises loam cake, lower cover, in the space that upper and lower cover forms, is provided with rubber spring, and described rubber spring comprises main shaft, on main shaft, circumferentially is fixed with rubber layer, and fixed cover is provided with cylindrical outer casing outside rubber layer; On cylindrical outer casing, be provided with engaging lug, engaging lug links to each other with an end of connecting rod, and the other end of connecting rod connects adjusting knob after passing loam cake.
In order to regulate the preparatory degree of tightness power size of rubber spring; As preferably, link to each other through Connection Block between described engaging lug and the connecting rod, described engaging lug is two; Described connecting rod is a screw rod; Connection Block is between two engaging lugs and is hinged with engaging lug, and an end of connecting rod is threaded with Connection Block, on connecting rod, also is provided with limiting component.
As preferably, described limiting component is one to be set in the small sleeve on the connecting rod, and it is horn-like that small sleeve is, and is provided with the step surface that matches with the inclined-plane of small sleeve last covering, and small sleeve is against on the step surface.
For with spindle lock in certain position, as preferably, on main shaft, be welded with a pair of lug, described lug and mount pad are hinged, mount pad links to each other with an end of pneumatic spring, the other end and the loam cake of pneumatic spring are hinged.
For conserve space, as preferably, described rubber layer, cylindrical outer casing are provided with an engaging lug along being divided into two sections on the main shaft axial direction on every section cylindrical outer casing, and lug is welded on two sections main shafts between the cylindrical outer casing.
As preferably; On mount pad, be provided with a jack, the gas bar of pneumatic spring is inserted in the jack, on mount pad, also is provided with a pair of little lug; On mount pad, also be provided with one perpendicular to said jack and the lever installing hole that is connected with jack; One lever is inserted into to offset in the described lever installing hole and with the valve of gas club head and cooperates, and an end and the little lug of lever are hinged, and the other end of lever connects control line.
As preferably, the cross section outer contour shape of described rubber layer is circular.
A kind of swivel chair chassis; Comprise loam cake, lower cover; In the space that upper and lower cover forms, be provided with rubber spring, described rubber spring comprises main shaft, in main shaft periphery to being fixed with rubber layer; Fixed cover is provided with cylindrical outer casing outside rubber layer, and described cylindrical outer casing circumferentially is fixedly connected with upper and lower cover.
As preferably, on cylindrical outer casing, be provided with engaging lug, described engaging lug is connected with connecting rod, and the other end of connecting rod is fixedly connected with loam cake.Through connecting rod cylindrical outer casing is fixed, when preventing that it from rotating, rubber is had an effect.
Adopted the principle of the present invention and the beneficial effect of technique scheme to be:
Adopted rubber spring as core component in the chassis of the present invention, the main shaft two ends of rubber spring connect backrest through connecting rod, when the people leans on backrest; Backrest applies certain power through connecting rod to main shaft, and driving main shaft is rotated certain corner, and the cylindrical outer casing of rubber spring is fixed; So the rotation of main shaft makes rubber layer produce torsion; The corner of main shaft is big more, and torsion is big more, and this part torsion can order about main shaft and backrest resets.
The present invention is provided with engaging lug on cylindrical outer casing, engaging lug through rotating screw bolt, makes cylindrical outer casing turn over certain corner through the Connection Block connecting screw rod, like this can be according to the size of the initial degree of tightness power of each human needs regulating spring.
The present invention also is provided with pneumatic spring in the chassis, the two ends of pneumatic spring respectively with main shaft on lug and loam cake hinged, when pneumatic spring is in open mode; Lug rotates with main shaft; When needs are fixed on certain position with backrest, close pneumatic spring, at this moment; Main shaft no longer rotates, and backrest has been fixed on certain position.
After having adopted chassis structure of the present invention, can realize that backrest regulates at any angle and may be locked on the optional position, it is very convenient to make backrest regulate, and can satisfy different human needs.
Description of drawings
Fig. 1 is the explosive view on chassis of the present invention;
Fig. 2 is the open mode sketch map of loam cake of the present invention;
Fig. 3 is the installation diagram on chassis of the present invention;
Fig. 4 is the cutaway view of Fig. 3;
Fig. 5 is the cutaway view of Fig. 3 other direction;
Fig. 6 is the structural representation of rubber spring;
Fig. 7 is that the A of Fig. 6 is to view.
The specific embodiment
The specific embodiment of the present invention is following:
Embodiment 1: a kind of swivel chair chassis like Fig. 1~shown in Figure 3, comprises the loam cake 1, the lower cover 2 that cover mutually; In the space that upper and lower cover 1,2 forms, be provided with a rubber spring; Like Fig. 1, Fig. 2, Fig. 6, shown in Figure 7, described rubber spring comprises the main shaft 3 in order to the Connection Block chair back, outside main shaft 3, circumferentially is fixed with rubber layer 4; The two ends of main shaft 3 are exposed to outside the rubber layer 4; Fixed cover is provided with cylindrical outer casing 5 outside rubber layer 4, and the outline of rubber layer 4, cylindrical outer casing 5 cross sections is circular, and main shaft 3 all is to be processed by metal material with cylindrical outer casing 5; The process of rubber spring is: main shaft 3 and cylindrical outer casing 5 are placed in the mould, and main shaft 3 is in the position of cylindrical outer casing 5 central axis, and casting rubber forms rubber layer 4 between main shaft 3 and cylindrical outer casing 5 then.
Like Fig. 1, Fig. 2, Fig. 4, shown in Figure 5, described rubber layer 4, cylindrical outer casing 5 are along being divided into two sections on the main shaft axial direction, and two sections cylindrical outer casings 5 do not link to each other; On every section cylindrical outer casing 5, be provided with an engaging lug 6, on engaging lug 6, be provided with axis hole 1, between two engaging lugs 6, be provided with a connecting seat 8; Correspondence is provided with axis hole 2 10 on Connection Block 8, and steady pin 9 passes the axis hole 2 10 on axis hole 1 and the Connection Block 8, and Connection Block 8 and engaging lug 6 are rotatably connected; On Connection Block 8, also be provided with a screwed hole with axis hole 2 10 vertical directions, described screwed hole is connected with connecting rod 11, and connecting rod 11 is a screw rod; The thread segment of connecting rod 11 1 ends and the screwed hole of Connection Block 8 are spirally connected; The screw head 20 of the other end of connecting rod 11 passes loam cake 1 back and connects adjusting knob 12, and the screw head 20 and adjusting knob 12 integrated injection moldings of connecting rod 11 are covered with overcoat 21 at adjusting knob 12; On connecting rod 11, also be provided with limiting component; Described limiting component is one to be set in the small sleeve 13 on the connecting rod 11, and small sleeve 13 is horn-like, and small sleeve 13 is arranged on outside the loam cake 1; On loam cake 1, be provided with the step surface 14 that matches with the annular slope of small sleeve 13, small sleeve 13 is against on the step surface 14.Thus, screw adjusting knob 12 pivot links 11, drive cylindrical outer casing 5 and turn an angle forward or backwards, to regulate the initial elastic force size of rubber spring.
On the main shaft that exposes between two sections cylindrical outer casings 5, be welded with a pair of lug 15; Between two lugs 15, be provided with a mount pad 16; One pneumatic spring 23 links to each other with lug 15 through mount pad 16; On lug 15, be provided with axis hole 3 17, correspondence is provided with axis hole 4 18 on mount pad 16, and the little axle 19 of a connection is located in and makes mount pad 16 and lug 15 form hinged in axis hole 3 17, the axis hole 4 18.
Like Fig. 1, Fig. 2, shown in Figure 4; Mount pad 16 is such with the syndeton of pneumatic spring 23; On mount pad 16, also be provided with one with the perpendicular jack 22 of axis hole 4 18, the gas bar 24 of pneumatic spring 23 1 ends is inserted in the jack 22, on mount pad 16, also is provided with a pair of little lug 25; On mount pad 16, also be provided with one perpendicular to said jack 22 and the lever installing hole 26 that is connected with jack 22; One lever 27 is inserted into to offset in the described lever installing hole 26 and with the valve 28 of gas bar 24 heads and cooperates, and an end and the little lug 25 of lever 27 are hinged, and the other end of lever 27 connects control line; The other end of pneumatic spring 23 and loam cake 1 are hinged.
When main shaft 3 rotates, and pneumatic spring 23 is when being in open mode, and gas bar 24 freely stretches with the rotation of lug 15; When needs are fixed on certain position with backrest, the pulling control line, lever 27 touches valve 28, and pneumatic spring 23 is closed, and main shaft 3 is fixing, to reach the fixedly purpose of backrest.
Embodiment 2: the difference of present embodiment and embodiment 1 is that described cylindrical outer casing circumferentially is fixedly connected with upper and lower cover; Rubber spring also can be had an effect like this, and the form that cylindrical outer casing is not rotated is also varied, and such as changing its shape into except that circle other shapes, it is back spacing to it that covers is covered; Also engaging lug can be set on cylindrical outer casing, engaging lug is connected fixing with loam cake through connecting rod, or the like.