CN205144035U - Swivel chair chassis - Google Patents
Swivel chair chassis Download PDFInfo
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- CN205144035U CN205144035U CN201520781749.4U CN201520781749U CN205144035U CN 205144035 U CN205144035 U CN 205144035U CN 201520781749 U CN201520781749 U CN 201520781749U CN 205144035 U CN205144035 U CN 205144035U
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- adjusting screw
- bearing pin
- rod
- swinging block
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Abstract
The utility model discloses a swivel chair chassis, including base and bracket, the bracket passes through the pivot that the level set up and links to each other with the base, still includes the adjusting screw that a swing piece and level set up, and in the base was inserted to adjusting screw's one end, adjusting screw's the other end exposed outside the base, and adjusting screw exposes part in the base outside and overlaps and be equipped with the spring, and adjusting screw expose the screw section outside the base on screw -thread fit have the nut for regulating spring deformation degree, swing piece set up in the base and the middle part of swing piece articulated with the base, one end and this end hinge that adjusting screw inserted the base of swing piece connect, the other end of swing piece was with bracket corresponding site contact cooperation so that the swing takes place for the swing piece when bracket rotated, and then pulling adjusting screw removes and makes the restoring force of spring distortion in order to form the bracket. The utility model discloses a swivel chair chassis changes the spring into horizontal installation by vertical installation, and is whole more pleasing to the eye, not only need not to bend to squat down, still makes the regulation more convenient.
Description
Technical field
The utility model relates to swivel chair, office chair technical field, particularly a kind of Revolving chair chassis.
Background technology
Revolving chair chassis, also claims Revolving chair tray, is the vitals be contained in below swivel chair seat cushion, the lifting of seat cushion, and the elevation angle of backrest regulates and all relies on chassis.
Such as, Chinese patent (notification number: CN2922618) discloses one: " lifting and reclining Chair underpan ", and this Chair underpan is by upper dish, mid-game and knob composition, knob is fixed on by CARRIAGE BOLTS and coils, and dust cover, washer and spring fitting are in mid-game, during chair reclining, spring plays reset response to chair reclining, as can be seen from this patent, knob, spring and CARRIAGE BOLTS are vertical or be almost vertically arranged on chassis substantially, i.e. knob, formed by the axis of spring and CARRIAGE BOLTS and mid-game or seat support, angle is 70 ~ 90 degree, during to the elastic force of regulating spring with the reset response power of regulating spring to chair reclining, need to squat down or bend by turning knob with the upper-lower position of adjusting knob on CARRIAGE BOLTS, thus the compression degree of regulating spring is with the reset response power of regulating spring to chair reclining, inconvenient operation, comparatively require great effort, and especially bend to regulate posture unbecoming for women, adjusting knob can not be removed because above-mentioned defect directly results in user in a lot of situation, therefore directly results in the waste of above-mentioned functions.
Notification number is: the Chinese patent of " CN102090805 " improves, provide the Chair underframe that a kind of reclining power is adjustable, it comprises mid-game and deep bid, the rear portion of deep bid can around the shaft relative to mid-game to lower swing, the lower front of mid-game is provided with knob, and knob has cavity, is provided with the installing plate fixing with knob in the cavity of described knob, the position that knob corresponds to below installing plate is provided with worm gear, and described worm gear can around own axes relative to knob; Its utility model main points are: correspond to worm gear side in knob and be provided with the worm screw engaged with worm gear, handle one end enters to be connected with described worm-drive in knob from knob is overhanging, adjusting bolt matches through screw thread after the installing plate in deep bid, mid-game and knob and described worm gear from top to bottom successively, described adjusting bolt is coaxial with worm gear, and the position that adjusting bolt corresponds to more than below mid-game and installing plate is arranged with helical spring.
By such improvement, without the need to bending, only need to stretch out one's hand turning handle namely to move up or down by worm and gear adjusting bolt, thus the compression degree of adjustable screw spring.Equally, notification number is: " CN201602417 ", utility model name are called: the utility model patent of " worm and gear adjusting swivel chair tray " also has similar improvement, and adjusting handle is in seat side edges, and user is namely adjustable without the need to squatting down or bending.
But the root problem still do not solved is: knob, spring and adjusting bolt are vertical or be almost vertically arranged on chassis substantially, that is angle formed by the axis of knob, spring and adjusting bolt and chassis or seat support is 70 ~ 90 degree, so from chair front or two sides, can very clearly see the knob exposed below chassis, very unsightly, also reduce the class of product to a certain extent, the requirement succinct to chair appearance that people improve day by day can not be adapted to again.
Utility model content
The utility model to overcome in above-mentioned prior art existing deficiency, provide a kind of not only can make product succinctly attractive in appearance, but also facilitate the Revolving chair chassis of regulating spring compression degree.
The technical solution of the utility model is achieved in that
A kind of Revolving chair chassis, comprise connecting the base of gas bar, in order to connect the bracket of seat support, bracket is connected with base by horizontally disposed rotating shaft, this chassis also comprises a swinging block and horizontally disposed adjusting screw(rod), in one end inserted base of adjusting screw(rod), the other end of adjusting screw(rod) is exposed to outside base, and the part that adjusting screw(rod) is exposed to outside base is arranged with spring, and on adjusting screw(rod) is exposed to outside base thread segment, threaded engagement has the nut in order to regulating spring deformation extent; Swinging block be arranged in base and the middle part of swinging block and base hinged, one end of swinging block and this end of adjusting screw(rod) inserted base hinged, during carriage turns, the other end of swinging block contacts with bracket corresponding site and coordinates that swinging block is swung, and then pulls adjusting screw(rod) to move to impel camber of spring to form the restoring force of bracket.When people be sitting in swivel chair swings back and makes carriage turns time, swinging block can be driven to swing, and then pull adjusting screw(rod) to move towards the direction of Compress Spring, namely the elastic force that spring produces become the restoring force of bracket; Adjusting screw(rod) is that circumference is fixing, and therefore rotating nut can the compression degree of regulating spring.
As preferably, be provided with support at base internal fixtion, swinging block and support are by the first hinge.
As preferably, described support comprises the gripper shoe of a pair spaced and parallel setting, and gripper shoe upper end is provided with the axis hole coordinated with the first bearing pin, and swinging block is arranged between two gripper shoes.
As preferably, this end in adjusting screw(rod) inserted base is fixedly connected with regulating connecting rod, and one end of swinging block and regulating connecting rod are by the second hinge.Regulating connecting rod is a flat, facilitates perforate and coordinates with swinging block is hinged.
As preferably, regulating connecting rod is provided with through hole, the second described bearing pin is plugged in through hole.
As preferably, the second described bearing pin coordinates with via clearance.Due to swinging block swing time, can in some angle to adjusting screw(rod) pulling force obliquely or obliquely, make it can produce situation about moving up and down, thus cause regulating connecting rod, adjusting screw(rod) horizontal direction moves not smooth, described through hole can be designed to the diameter being greater than the second bearing pin, the second bearing pin can be made like this to have free gap, avoid adjusting screw(rod) to produce as far as possible and move up and down.
As preferably, between swinging block and regulating connecting rod, be also provided with intermediate connecting rod, one end of intermediate connecting rod is connected by the second bearing pin with regulating connecting rod, and the other end of intermediate connecting rod and regulating connecting rod are by the 4th hinge.By such setting, when swinging block is swung, its oblique pulling force produced is transferred on intermediate connecting rod, and the existence of intermediate connecting rod can revise moving up and down of regulating connecting rod generation further.
Transmit more balanced for exerting all one's strength, as preferably, described intermediate connecting rod comprises the kidney-shaped plate that two Parallel Symmetrics are arranged, and two kidney-shaped plates are fixedly linked by least one connecting plate, and regulating connecting rod is arranged between two kidney-shaped plates.
For strengthening the fastness of swinging block, prevent distortion, as preferably, swinging block entirety is triangular in shape.
As preferably, described swinging block comprises the set square that two Parallel Symmetrics are arranged, be fixedly linked by least one connecting plate between two set squares, two angles of set square respectively with base and adjusting screw(rod) hinged, another angle of set square contacts with bracket corresponding site and coordinates.Interval between two set squares can hold regulating connecting rod, and exerting all one's strength, it is more balanced to transmit.
Conveniently with bracket engagement, as preferably, be provided with the 3rd bearing pin contacting with bracket corresponding site on another angle of coordinating of set square.
As preferably, be provided with briquetting at the corresponding site coordinated with set square of bracket, bottom briquetting, be provided with the indent coordinated with the 3rd bearing pin.When briquetting presses down swinging block, the 3rd bearing pin is in indent.
As preferably, described swinging block, adjusting screw(rod) are installed on base rear portion, and described briquetting is fixedly installed on pallet rear end, and carriage turns makes briquetting press down swinging block, and then pull adjusting screw(rod) to move towards the direction of Compress Spring.
As preferably, bracket be provided with two symmetrical axle beds with the corresponding site that set square coordinates and be arranged between two axle beds in order to contact the 5th bearing pin coordinated with the 3rd bearing pin, described axle bed and bracket are fixedly linked, and the 5th bearing pin to be in above the 3rd bearing pin and arranged in a crossed manner with the 3rd bearing pin.This kind of structure comparatively adopts briquetting, reduces die cost, and contact form is become point cantact from linear contact lay, decreases frictional force during contact.
As preferably, the central axis of the 5th described bearing pin and the central axis of the 3rd bearing pin perpendicular.
As preferably, on the 3rd bearing pin, the 5th bearing pin, cover has axle sleeve respectively, and described axle sleeve is rotationally connected with the 3rd bearing pin, the 5th bearing pin respectively.Axle sleeve is rotary, therefore when the 5th bearing pin matches with the 3rd bearing pin, two shaft rooms produce force of rolling friction, than linear contact lay produce force of sliding friction less, can make between the 3rd bearing pin with the 5th bearing pin coordinate more smooth and easy.
As preferably, described swinging block, adjusting screw(rod) are installed on base rear portion, and described axle bed is fixedly installed on pallet rear end, and carriage turns makes the 5th bearing pin press down swinging block, and then pulls adjusting screw(rod) to move towards the direction of Compress Spring.
As preferably, be provided with lug at the corresponding site coordinated with set square of bracket, described lug and a U-shaped draw ring hinged, the 3rd bearing pin is located in the U-lag of U-shaped draw ring.This kind is arranged, and when can make carriage turns, upwards can lift swinging block and make it swing.
As preferably, described swinging block, adjusting screw(rod) are installed on base front portion, and described lug, U-shaped draw ring are arranged on bracket front end, and carriage turns makes U-shaped draw ring lift swinging block, and then pulls adjusting screw(rod) to move towards the direction of Compress Spring.
As preferably, be respectively provided with a spring support at the two ends of spring, the two ends of spring offset respectively by the side plate of adjacent spring support and nut, base.
As preferably, this chassis comprises a regulating handle, and this regulating handle is connected with a sleeve, and described jacket casing is located at outside spring, and nut is fixedly installed at the bottom of sleeve cylinder.The axis of the axis of regulating handle, sleeve and adjusting screw(rod), spring is on the same line, and regulating handle is in chair side, stretches out one's hand and just can encounter, facilitate the compression degree of adjusting nut and spring, and sleeve encases spring and avoids it to expose outside.
As preferably, described base comprises base plate and is vertically installed in the side plate of base plate both sides, and side plate is provided with the perforation penetrated for adjusting screw(rod) wherein, the corresponding perforate being provided with this end of penetrating base for adjusting screw(rod) and passing on another side plate.Perforate on another side plate can make adjusting screw(rod) end pass, thus when swinging block amplitude of fluctuation is large, adjusting screw(rod) shift motion is long, adjusting screw(rod) horizontal direction can move freely, not by the obstruction of base side plate.
Have employed the design starting point of the present utility model of technique scheme, theory and beneficial effect is:
Revolving chair chassis of the present utility model changes spring into horizontal installation by vertical installation, and the power transmission of carriage turns and adjusting screw(rod) has been come by the swinging block in base, very ingenious, the benefit of laterally installing is that the axis of spring and the axis of regulating handle are on a line substantially, not only squat down without the need to bending, make adjustment more convenient, and it is arranged on after on seat support, relatively roomy seat support can cover in spring and regulating handle major part position, from appearance, one of regulating handle is only had to expose outside, the overall simplicity generosity of chair appearance, not only meet the convenient function regulated, also improve product specification.
Moreover space waste effectively can be reduced when casing transport in chassis of the present utility model, increases vanning amount, reduces cost of transportation.
Accompanying drawing explanation
Fig. 1 is the perspective view on chassis in embodiment 1;
Fig. 2 is the planar structure schematic diagram on chassis in embodiment 1;
Fig. 3 is the A1 direction view of Fig. 2;
Fig. 4 is the A2 direction view of Fig. 2;
Fig. 5 is the A-A sectional view of Fig. 2;
Fig. 6 is the B-B sectional view of Fig. 2;
Fig. 7 is the explosive view on chassis in embodiment 1;
Fig. 8 is the structural representation that in embodiment 1, swinging block is direct and regulating connecting rod is hinged;
Fig. 9 be in embodiment 1 swinging block and regulating connecting rod hinged time the second bearing pin and via design be the structural representation of matched in clearance;
Figure 10 is the structural representation that in embodiment 1, swinging block is connected with regulating connecting rod by intermediate connecting rod;
Figure 11 is the perspective view on chassis in embodiment 2;
Figure 12 is the planar structure schematic diagram on chassis in embodiment 2;
Figure 13 is the C-C sectional view of Figure 12;
Figure 14 is the F-F sectional view of Figure 12;
Figure 15 is the explosive view on chassis in embodiment 2;
Figure 16 is the structural representation that in embodiment 2, swinging block is direct and regulating connecting rod is hinged;
Figure 17 be in embodiment 2 swinging block and regulating connecting rod hinged time the second bearing pin and via design be the structural representation of matched in clearance;
Figure 18 is the structural representation that in embodiment 2, swinging block is connected with regulating connecting rod by intermediate connecting rod;
Figure 19 is the perspective view on chassis in embodiment 3;
Figure 20 is the sectional view on chassis in embodiment 3;
Figure 21 is the A portion enlarged drawing of Figure 20;
Figure 22 is the explosive view on chassis in embodiment 3.
Detailed description of the invention
Detailed description of the invention of the present utility model is as follows:
First the reference azimuth of the utility model critical piece is defined, the utility model by chassis and swivel chair when normal mounting uses, the front of swivel chair is front end, and the position that the rear of swivel chair comprises backrest place is rear end, the front end on chassis is the region away from backrest, and the rear end on chassis is the region near backrest.
Embodiment 1: present embodiments provide a kind of Revolving chair chassis, as shown in Fig. 1 ~ 7, a kind of Revolving chair chassis, comprise connecting the base 1 of gas bar, in order to connect the bracket 2 of seat support, bracket 2 is connected with base 1 by horizontally disposed rotating shaft 3, this chassis also comprises a swinging block 4 and is horizontally disposed with and circumferential fixing adjusting screw(rod) 5, and in one end inserted base 1 of adjusting screw(rod) 5, the other end of adjusting screw(rod) 5 is exposed to outside base 1.
Adjusting screw(rod) 5 part be exposed to outside base 1 is arranged with spring 26, and on adjusting screw(rod) 5 is exposed to outside base 1 thread segment 27, threaded engagement has the nut 28 in order to regulating spring 26 deformation extent; The compression degree of camber of spring degree mainly thrum spring, namely spring-compressed produces elastic force, and the different corresponding elastic force of compression degree of spring is also different; Swinging block 4 be arranged in the base 1 and middle part of swinging block 4 and base 1 hinged, one end of swinging block 4 and this end of adjusting screw(rod) 5 inserted base 1 hinged, when bracket 2 rotates, the other end of swinging block 4 contacts with bracket corresponding site and coordinates that swinging block 4 is swung.Because this end in adjusting screw(rod) 5 inserted base 1 is limited by swinging block 4, so circumference can not be rotated.
Specifically, described base 1 comprises base plate 6 and is vertically installed in side plate 7a, 7b of base plate 6 both sides, side plate 7a is provided with the perforation 8 penetrated for adjusting screw(rod) 5 wherein, for avoiding hampering adjusting screw(rod) 5 when adjusting screw(rod) 5 horizontal direction shift motion is large, the corresponding perforate 9 being provided with this end of penetrating base for adjusting screw(rod) 5 and passing on another side plate 7b.
Respectively be provided with a spring support 29 at the two ends of spring 26, the two ends of spring 26 offset with the side plate 7a of nut 28, base respectively by adjacent spring support 29.Revolving chair chassis of the present utility model also comprises a regulating handle 30, and this regulating handle 30 is connected with a sleeve 31, and described sleeve 31 is set in outside spring 26, and nut 28 is fixedly installed at the bottom of 31, sleeve.
Be provided with support 10 at base 1 internal fixtion, swinging block 4 is hinged by the first bearing pin 11 with support 10; Specifically, described support 10 comprises the gripper shoe 12 of a pair spaced and parallel setting, gripper shoe 12 is respectively perpendicular to base plate 6 and side plate 7a, 7b, gripper shoe 12 upper end is provided with the axis hole 13 coordinated with the first bearing pin 11, swinging block 4 is arranged between two gripper shoes 12, and the part in adjusting screw(rod) 5 inserted base 1 is also between two gripper shoes 12.
For making rotation more freely, take into account again the requirement of fastness, swinging block 4 is overall triangular in shape simultaneously; Specifically, described swinging block 4 comprises the set square 14 that two Parallel Symmetrics are arranged, be fixedly linked by least one connecting plate 15 between two set squares 14, two angles of set square 14 respectively with the support 10 of base and adjusting screw(rod) 5 hinged, another angle of set square 14 contacts with bracket corresponding site and coordinates.
Specifically, swinging block 4 is for being obliquely installed, offer pin-and-hole 16a, 16b, 16c respectively at three angles place of set square 14, the first bearing pin 11 is located in a pin-and-hole 16b in the middle of the axis hole 13 of two gripper shoes 12 and two set squares 14 successively, completes the hinged of swinging block 4 and support 10.
This end in adjusting screw(rod) 5 inserted base 1 is fixedly connected with regulating connecting rod 17, and regulating connecting rod 17 is between two set squares 14, and one jiao below swinging block 4 hinged by the second bearing pin 18 with regulating connecting rod 17; Regulating connecting rod 17 is provided with through hole 19, and the second described bearing pin 18 is plugged in the pin-and-hole 16c of one jiao, set square 14 lower end and the through hole 19 of regulating connecting rod 17 successively, completes the hinged of swinging block 4 and regulating connecting rod 17.
Fig. 8 shows the simplest directly mode of one, and namely directly to pass through the second bearing pin 18 with regulating connecting rod 17 hinged for swinging block 4, and the diameter of the second bearing pin 18 equals the size in through hole 19 aperture; But due to component obliquely or obliquely can be produced when swinging block 4 swings, so while regulating connecting rod 17 can be made to move in the horizontal direction, mobile trend up or down also can be produced.So as improving, as shown in Figure 9, the second described bearing pin 18 is designed to matched in clearance with through hole 19, the size of through hole 19 is greater than the diameter of the second bearing pin 18, gap between second bearing pin 18 and through hole 19 can balance out the shift motion of the second bearing pin 18 in oblique direction, avoids regulating connecting rod 17 to produce and moves up and down.
As further improvement, as shown in Fig. 5,7,10, between swinging block 4 and regulating connecting rod 17, be also provided with intermediate connecting rod 20, one end of intermediate connecting rod 20 is connected by the second bearing pin 18 with regulating connecting rod 17, and the other end and the regulating connecting rod 17 of intermediate connecting rod 20 are hinged by the 4th bearing pin 21.Specifically, described intermediate connecting rod 20 comprises the kidney-shaped plate 22 that two Parallel Symmetrics are arranged, two kidney-shaped plates 22 are fixedly linked by least one connecting plate 15, and regulating connecting rod 17 is arranged between two kidney-shaped plates 22, and two kidney-shaped plates 22 are in again between two set squares 14.
Another angle of set square 14 contacts with bracket corresponding site and coordinates, and specifically, another angle of coordinating is provided with the 3rd bearing pin the 23, three bearing pin 23 is located in the pin-and-hole 16a of two set squares 14 contacting with bracket corresponding site of set square 14.3rd bearing pin 23 compares the second bearing pin 18 closer to spring 26 in the horizontal direction; In the present embodiment, described swinging block 4, adjusting screw(rod) 5 are installed on base 1 rear portion, namely be arranged on the direction near the chair back, be provided with briquetting 24 at the corresponding site coordinated with swinging block 4 of bracket 2, bottom briquetting 24, be provided with the indent 25 coordinated with the 3rd bearing pin 23; Described briquetting 24 is fixedly installed on bracket 2 rear end, when people to be sitting on swivel chair backward by time, pallet rear end rotates backward and makes briquetting 24 press down swinging block 4, namely presses down the 3rd bearing pin 23, and then pulls adjusting screw(rod) 5 to move towards the direction of Compress Spring 26.
The utility model chassis is arranged on after on swivel chair, nut 28 synchronous axial system can be driven when rotating regulating handle, because adjusting screw(rod) 5 is that circumference is fixing, and adjusting screw(rod) 5 is due to the gravity of the restriction of swinging block 4 and bracket, seat support, adjusting screw(rod) 5 original state is made to produce movement, at this moment nut 28 moves horizontally along adjusting screw(rod) 5 axis direction, will the compression degree of regulating spring, then realizes the object of regulating spring to chair reclining power.During operation, hand, without the need to bending, also without the need to squatting down on the ground, only need be stretched to chair side and touching regulating handle and rotate by user, easy to operate, time saving and energy saving; The most important thing is, spring changes horizontal installation into by vertical mounting means, most of position of seat support is covered in spring and handle, makes chair appearance entirety more succinct, improves product specification.
Embodiment 2: the difference of the present embodiment and embodiment 1 is: it is anterior that described swinging block 4, adjusting screw(rod) 5 are installed on base 1, lug 32 is provided with at the corresponding site coordinated with swinging block set square of bracket 2, it is hinged that described lug 32 and a U-shaped draw ring 33 pass through the 5th bearing pin 34,3rd bearing pin 23 is located in the U-lag 35 of U-shaped draw ring 33, and described lug 32, U-shaped draw ring 33 are arranged on bracket 2 front end; When people to be sitting on swivel chair backward by time, bracket 2 front end is upwards rotated, and then drives U-shaped draw ring 33 upwards to lift the 3rd bearing pin 23, and swinging block 4 swings simultaneously, and then pulls adjusting screw(rod) 5 to move towards the direction of Compress Spring.
In the present embodiment, as shown in Figure 13,16 ~ 18, swinging block 4 oppositely installs, namely the 3rd bearing pin 23 compares the second bearing pin 18 further from spring 26 in the horizontal direction, when making bracket 2 front end upwards rotate lift the 3rd bearing pin 23, adjusting screw(rod) 5 can be pulled to move towards the direction of Compress Spring 26 in the same old way.
Identical with embodiment 1, as shown in Figure 16 ~ 18, swinging block 4 is direct and regulating connecting rod 17 is hinged by the second bearing pin 18; Or the second bearing pin 18 is designed to matched in clearance with through hole 19; Again or, between swinging block 4 and regulating connecting rod 17, be also provided with intermediate connecting rod 20; In more detail can describing see embodiment 1.
Embodiment 3: the difference of the present embodiment and embodiment 1 is: as shown in Figure 19 ~ 22, described swinging block 4, adjusting screw(rod) 5 are installed on base 1 rear portion, bracket 2 be provided with two symmetrical axle beds 36 with the corresponding site that set square 14 coordinates and be arranged between two axle beds 36 in order to contact the 5th bearing pin 37 coordinated with the 3rd bearing pin 23, axle bed 36 is metallic plate, and described axle bed 36 is arranged on bracket 2 rear end and is welded and fixed with bracket 2; 5th bearing pin 37 to be in above the 3rd bearing pin 23 and arranged in a crossed manner with the 3rd bearing pin 23, specifically, as shown in Figure 20,21, the central axis of the 5th described bearing pin 37 and the central axis of the 3rd bearing pin 23 perpendicular.
For reducing frictional force further, on the 3rd bearing pin 23, the 5th bearing pin 37, cover has axle sleeve 38 respectively, described axle sleeve 38 is rotationally connected with the 3rd bearing pin 23, the 5th bearing pin 37 respectively, in the present embodiment, be point cantact between two axle sleeves 38, and both are all rotatable, thus effectively can reduce friction.
When people to be sitting on swivel chair backward by time, bracket 2 rotates and makes the 5th bearing pin 37 press down the 3rd bearing pin 23 in swinging block, and then pulls adjusting screw(rod) 5 to move towards the direction of Compress Spring.
Claims (22)
1. a Revolving chair chassis, comprise connecting the base of gas bar, in order to connect the bracket of seat support, bracket is connected with base by horizontally disposed rotating shaft, it is characterized in that: also comprise a swinging block and horizontally disposed adjusting screw(rod), in one end inserted base of adjusting screw(rod), the other end of adjusting screw(rod) is exposed to outside base, and the part that adjusting screw(rod) is exposed to outside base is arranged with spring, and on adjusting screw(rod) is exposed to outside base thread segment, threaded engagement has the nut in order to regulating spring deformation extent; Swinging block be arranged in base and the middle part of swinging block and base hinged, one end of swinging block and this end of adjusting screw(rod) inserted base hinged, during carriage turns, the other end of swinging block contacts with bracket corresponding site and coordinates that swinging block is swung, and then pulls adjusting screw(rod) to move to impel camber of spring to form the restoring force of bracket.
2. Revolving chair chassis according to claim 1, is characterized in that: be provided with support at base internal fixtion, and swinging block and support are by the first hinge.
3. Revolving chair chassis according to claim 2, is characterized in that: described support comprises the gripper shoe of a pair spaced and parallel setting, and gripper shoe upper end is provided with the axis hole coordinated with the first bearing pin, and swinging block is arranged between two gripper shoes.
4. Revolving chair chassis according to claim 1, is characterized in that: this end in adjusting screw(rod) inserted base is fixedly connected with regulating connecting rod, and one end of swinging block and regulating connecting rod are by the second hinge.
5. Revolving chair chassis according to claim 4, is characterized in that: on regulating connecting rod, be provided with through hole, and the second described bearing pin is plugged in through hole.
6. Revolving chair chassis according to claim 5, is characterized in that: the second described bearing pin coordinates with via clearance.
7. Revolving chair chassis according to claim 5, it is characterized in that: between swinging block and regulating connecting rod, be also provided with intermediate connecting rod, one end of intermediate connecting rod is connected by the second bearing pin with regulating connecting rod, and the other end of intermediate connecting rod and regulating connecting rod are by the 4th hinge.
8. Revolving chair chassis according to claim 7, is characterized in that: described intermediate connecting rod comprises the kidney-shaped plate that two Parallel Symmetrics are arranged, and two kidney-shaped plates are fixedly linked by least one connecting plate, and regulating connecting rod is arranged between two kidney-shaped plates.
9. Revolving chair chassis according to claim 1, is characterized in that: swinging block entirety is triangular in shape.
10. Revolving chair chassis according to claim 9, it is characterized in that: described swinging block comprises the set square that two Parallel Symmetrics are arranged, be fixedly linked by least one connecting plate between two set squares, two angles of set square respectively with base and adjusting screw(rod) hinged, another angle of set square contacts with bracket corresponding site and coordinates.
11. Revolving chair chassis according to claim 10, is characterized in that: be provided with the 3rd bearing pin contacting with bracket corresponding site on another angle of coordinating of set square.
12. Revolving chair chassis according to claim 11, is characterized in that: be provided with briquetting at the corresponding site coordinated with set square of bracket, are provided with the indent coordinated with the 3rd bearing pin bottom briquetting.
13. Revolving chair chassis according to claim 12, it is characterized in that: described swinging block, adjusting screw(rod) are installed on base rear portion, described briquetting is fixedly installed on pallet rear end, and carriage turns makes briquetting press down swinging block, and then pulls adjusting screw(rod) to move towards the direction of Compress Spring.
14. Revolving chair chassis according to claim 11, it is characterized in that: bracket be provided with two symmetrical axle beds with the corresponding site that set square coordinates and be arranged between two axle beds in order to contact the 5th bearing pin coordinated with the 3rd bearing pin, described axle bed and bracket are fixedly linked, and the 5th bearing pin to be in above the 3rd bearing pin and arranged in a crossed manner with the 3rd bearing pin.
15. Revolving chair chassis according to claim 14, is characterized in that: the central axis of the 5th described bearing pin and the central axis of the 3rd bearing pin perpendicular.
16. Revolving chair chassis according to claim 14, is characterized in that: on the 3rd bearing pin, the 5th bearing pin, cover has axle sleeve respectively, and described axle sleeve is rotationally connected with the 3rd bearing pin, the 5th bearing pin respectively.
17. Revolving chair chassis according to claim 14, it is characterized in that: described swinging block, adjusting screw(rod) are installed on base rear portion, described axle bed is fixedly installed on pallet rear end, and carriage turns makes the 5th bearing pin press down swinging block, and then pulls adjusting screw(rod) to move towards the direction of Compress Spring.
18. Revolving chair chassis according to claim 11, is characterized in that: be provided with lug at the corresponding site coordinated with set square of bracket, described lug and a U-shaped draw ring hinged, the 3rd bearing pin is located in the U-lag of U-shaped draw ring.
19. Revolving chair chassis according to claim 18, it is characterized in that: described swinging block, adjusting screw(rod) are installed on base front portion, described lug, U-shaped draw ring are arranged on bracket front end, carriage turns makes U-shaped draw ring lift swinging block, and then pulls adjusting screw(rod) to move towards the direction of Compress Spring.
20. Revolving chair chassis according to claim 1, is characterized in that: be respectively provided with a spring support at the two ends of spring, and the two ends of spring offset respectively by the side plate of adjacent spring support and nut, base.
21. Revolving chair chassis according to claim 1, is characterized in that: this chassis comprises a regulating handle, and this regulating handle is connected with a sleeve, and described jacket casing is located at outside spring, and nut is fixedly installed at the bottom of sleeve cylinder.
22. Revolving chair chassis according to claim 1, it is characterized in that: described base comprises base plate and is vertically installed in the side plate of base plate both sides, side plate is provided with the perforation penetrated for adjusting screw(rod) wherein, the corresponding perforate being provided with this end of penetrating base for adjusting screw(rod) and passing on another side plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781749.4U CN205144035U (en) | 2015-09-27 | 2015-09-27 | Swivel chair chassis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520781749.4U CN205144035U (en) | 2015-09-27 | 2015-09-27 | Swivel chair chassis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205144035U true CN205144035U (en) | 2016-04-13 |
Family
ID=55679788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520781749.4U Active CN205144035U (en) | 2015-09-27 | 2015-09-27 | Swivel chair chassis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205144035U (en) |
-
2015
- 2015-09-27 CN CN201520781749.4U patent/CN205144035U/en active Active
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