CN218738044U

CN218738044U - Office chair base

Info

Publication number: CN218738044U
Application number: CN202223103155.7U
Authority: CN
Inventors: 梁雄超
Original assignee: Foshan Pinzuo Furniture Co ltd
Current assignee: Foshan Pinzuo Furniture Co ltd
Priority date: 2022-11-22
Filing date: 2022-11-22
Publication date: 2023-03-28
Anticipated expiration: 2032-11-22

Abstract

The utility model discloses an office chair base, the on-line screen storage device comprises a base, the rear end rotatable coupling of base has the back of the chair connecting piece, back of the chair connecting piece rotatable coupling has the layer board, fixedly connected with briquetting in the base, the briquetting makes the layer board is spacing to be followed in the below of briquetting the spout slides for the briquetting, side rotatable coupling of base has the handle, the perpendicular to the axial meshing of handle is connected with the layer board locking lever. Via the utility model discloses office chair base that technical scheme made, its stability is better, and the noise is littleer, and structural rigidity's maintenance is more lasting.

Description

Office chair base

Technical Field

The utility model belongs to the technical field of the chair accessory, concretely relates to office chair base.

Background

Compared with a common household chair, the office chair aims at the target audience which is the working crowd of offices needing to sit still for a long time. Under the condition that a person keeps a posture for a long time, if the person cannot move the body in time or cannot change the posture to relax the body, the fatigue of joints of the body is easily caused by long-time sitting, and simultaneously along with mental fatigue, the pathological changes of corresponding positions can be induced for a long time, so that various physical problems are caused, and physical and psychological troubles are caused for the user. Therefore, the office chair not only has the basic supporting capability, but also has the capability of changing the posture of the office chair, so that the user can relax the body as much as possible when the user is inconvenient to walk, and the fatigue and the influence of muscle and bone strain caused by sedentary sitting are reduced.

In the prior art, in the utility model with the authorization notice number of CN216534563U, a bottom case buckle type locking structure applied to office chairs in 2022, 6/month and 17 days is disclosed, specifically, "a locking head is fixedly connected with a base," a locking position for locking the locking head in a matched manner is provided in a support plate member, "the support plate member is locked into the locking position by the locking head to be limited up and down," the support plate member is guided to move back and forth by the locking position and the locking head in a matched manner "and other technical information.

The above structure still has some defects to be improved, for example, the locking and releasing states are switched by the clamping head through the screw mode, the screw sliding phenomenon can cause certain influence on the stability of the whole structure, meanwhile, all the structures almost have rigid collision, on one hand, the whole structure is not favorable for keeping long rigidity, and on the other hand, certain noise is generated when the posture of the office chair is switched.

SUMMERY OF THE UTILITY MODEL

To the technical defect who exists among the background art, the utility model provides an office chair base has solved above-mentioned technical problem and has satisfied the actual demand, and concrete technical scheme is as follows:

the utility model provides an office chair base, includes the base, the rear end rotatable coupling of base has the back of the chair connecting piece, back of the chair connecting piece rotatable coupling has the layer board, fixedly connected with briquetting in the base, the spout of locating the layer board is passed to the upper end of briquetting, makes the layer board is spacing in the below of briquetting, and follows the spout slides for the briquetting, the side rotatable coupling of base has the handle, the perpendicular to the axial meshing of handle is connected with the one end of layer board locking lever, the other end perpendicular to layer board locking lever moves towards and is equipped with layer board locking shell fragment.

The utility model discloses one of the preferred technical scheme, the layer board bottom surface between and the bottom surface of layer board is equipped with low damping cushion, the briquetting bottom surface between and the layer board of briquetting is equipped with low damping cushion.

The utility model discloses one of the preferred technical scheme, the axial of handle is equipped with bevel gear, but layer board locking lever ground swivelling joint is in one side of handle perpendicularly, the axial of layer board locking lever is equipped with the meshing section with bevel gear meshing.

The utility model discloses one of the preferred technical scheme, the base is equipped with locking piece movable groove, locking piece movable groove is equipped with along its inner wall gliding layer board locking block, one side of layer board locking block be equipped with layer board locking shell fragment complex holding chamber.

The utility model discloses one of the preferred technical scheme, the bottom surface of layer board is equipped with a plurality of constant head tank corresponding to the terminal surface of layer board locking piece, the terminal surface of layer board locking piece be equipped with constant head tank complex locating piece.

The utility model discloses one of the preferred technical scheme, the briquetting is the n font, the base is equipped with the storage tank at the bilateral symmetry of briquetting, one end in the storage tank is connected with reset spring's one end along its trend, the below of spout one end be equipped with storage tank matched with contact block, contact block one side with reset spring's the other end offsets.

The utility model discloses one of the preferred technical scheme is located the low damping cushion of the layer board bottom surface between layer board and the base is single PU adhesive tape.

The utility model discloses one of the preferred technical scheme is located the low damping cushion of the briquetting bottom surface between briquetting and the layer board is single PU adhesive tape.

The utility model has the advantages of that:

1) After the pressing block is fixedly connected with the base, the sliding chute is used for realizing the mutual limiting and matching between the supporting plate and the base, a more closed and stable plane four-bar structure is integrally formed, and the integral state is switched without adjusting the tightness of screws;

2) Meanwhile, the elastic supporting plate locking structure in meshed connection with the supporting plate locking rod is used for releasing and locking the supporting plate, the supporting plate and the locking piece are limited in an elastic connection mode, and the locking piece is in meshed connection transmission, so that the transmission accuracy is ensured, the space of elastic deformation exists in the matching of different components, the impact force influence between the components is reduced, and the noise volume is reduced;

3) In addition, there is the low damping cushion who is no less than 1 department between layer board, briquetting and base for mutual relative movable friction is littleer, and further cushions the extrusion each other, noise reduction.

Therefore, under the scheme of the utility model, the office chair base stability that its equipment formed is better, and the noise is littleer to structural rigidity's maintenance is more lasting.

Drawings

Fig. 1 is a schematic view of the whole structure of the base of the office chair of the present invention.

Fig. 2 is a partially expanded schematic view of the base of the office chair of the present invention.

Figure 3 is the middle of the base of the office chair of the utility model.

Fig. 4 is a schematic view of the structure of the base and the chair back connecting part of the office chair base of the present invention.

Fig. 5 is a partially enlarged schematic view of the structure of the office chair base, such as the handle.

Wherein: the seat comprises a base 1, a chair back connecting piece 2, a supporting plate 3, a pressing block 4, a sliding groove 5, a handle 6, a supporting plate locking rod 7, a supporting plate locking elastic sheet 8, a low-damping elastic cushion 9, a bevel gear 10, an engaging section 11, a locking block movable groove 12, a supporting plate locking block 13, an accommodating cavity 14, a positioning groove 15, a positioning block 16, an accommodating groove 17, a reset spring 18, a collision block 19, a second handle 20 and a mandril 21.

Detailed Description

The embodiments of the present invention will be described with reference to the accompanying drawings and related examples, but the embodiments of the present invention are not limited to the following examples, and the relevant essential components of the present invention related to the technical field should be regarded as known in the art, and can be known and grasped by those skilled in the art.

Combine fig. 1 to 5 shown, an office chair base, including base 1, base 1's rear end rotatable coupling has back of the chair connecting piece 2, back of the chair connecting piece 2 rotatable coupling has layer board 3, fixedly connected with briquetting 4 in the base 1, the spout 5 of locating layer board 3 is passed to the upper end of briquetting 4, makes layer board 3 is spacing in the below of briquetting 4, and follows spout 5 slides for briquetting 4, base 1's side rotatable coupling has handle 6, the perpendicular to the axial meshing of handle 6 is connected with the one end of layer board locking lever 7, the other end perpendicular to layer board locking lever 7 moves towards and is equipped with layer board locking shell fragment 8.

The utility model discloses an in the middle of the structure, base 1 is connected with the chair leg subassembly of office chair and forms bottom sprag structure, layer board 3 is connected with the cushion and the handrail subassembly of office chair and forms cushion portion structure, and both combine the foundation structure who forms the chair, supply the user to sit on and to obtain supporting and relax. The rear end of the base 1, namely one side of the back close to the user sitting down, is rotatably connected with a chair back connecting piece 2, and the chair back connecting piece 2 is preferably hinged with the base 1 through 1 high-strength connecting shaft, so that the connection stability is ensured. Meanwhile, the upper part of the chair back connecting piece 3, as shown in the figure, is in rotatable connection with one end of the supporting plate 3, and the connection mode can adopt a high-strength connecting shaft to be hinged with each other in the same way. Thus, the chair back connecting piece 2 forms a connecting rod structure between the base 1 and the supporting plate 3, a linkage relation exists between the connecting rod structure and the supporting plate, and a surface limiting structure is further arranged between the supporting plate 3 and the chair back connecting piece 2 and the base 1, so that when the supporting plate 3 is in a locking state by a limiting piece linked by the handle 6, the chair back connecting piece 3 cannot move; or when the supporting plate 3 is in a movable state, the chair back connecting piece 3 is linked with the supporting plate 3 to jointly generate relative movement with the base 1 in a certain range of freedom under the limiting action of the supporting plate 3.

In order to let relative motion between the above-mentioned connecting rod structure more reliable, quiet, reduce the noise of colliding each other and to whole connection structure's influence, the utility model discloses specifically realize the purpose through following mode: firstly, for the locking structure of the supporting plate 3, a more reliable meshing connection mode is adopted for transmission, so that the action of the handle 6 is accurately transmitted to the supporting plate locking rod 7 in a meshing matching mode, and then the moment is synchronously transmitted to the supporting plate locking elastic sheet 8, and the locking and unlocking states of the supporting plate 3 can be controlled by changing the position of the supporting plate locking elastic sheet 8 relative to the axis of the rotating shaft of the supporting plate locking rod 7; secondly, further spacing each other through briquetting 4 between layer board 3 and the base 1, fixed connection 1 between briquetting 4 and the base 1 and with closed spout 5 in the layer board 3 mutually support, let layer board 3 under the limiting displacement of briquetting 4, only can be in the within range of spout 5, combine the fit clearance between the two, and relative displacement takes place between the base 1, the step of carrying out the screw thread regulation to the joint has been removed from, the connection between the whole is only influenced by layer board locking lever 7, base 1, back of the chair connecting piece 2, the plane four-bar linkage has been formed between layer board 3 and the briquetting 4, therefore the transmission is more accurate, stable.

The utility model discloses an office chair base can also set up the second handle 20 that is used for office chair altitude mixture control as required to and the ejector pin 21 connected by second handle 20, this ejector pin 21 structure contacts with the lift cylinder extrusion end that sets up in office chair bottom, through operation second handle 20, drives the lift cylinder with lever motion's mode equally, thereby changes the whole height of office chair cushion, adapts to different users.

As shown in fig. 3, the bottom surface of the supporting plate 3 between the supporting plate 3 and the base 1 is provided with a low damping elastic pad 9, the bottom surface of the pressing block 4 between the pressing block 4 and the supporting plate 3 is provided with the low damping elastic pad 9, the bottom surface of the supporting plate 3 between the supporting plate 3 and the base 1 and the bottom surface of the pressing block 4 between the pressing block 4 and the supporting plate 3 are both provided with the low damping elastic pad 9, so that the mutual friction force among the base 1, the supporting plate 3 and the pressing block 4 is further reduced, the impact force of mutual collision is reduced, and further the noise is suppressed to a great extent.

Combine fig. 2 and fig. 5 to show, one of the preferred embodiments of the utility model, the axial of handle 6 is equipped with bevel gear 10, but layer board locking lever 7 perpendicular ground swivelling joint is in one side of handle 6, layer board locking lever 7's axial is equipped with the meshing section 11 with bevel gear 10 meshing, through the cooperation relation between bevel gear 10 and the meshing section 11, the transmission between the two has realized the high right angle position conversion of precision for axle center direction between handle 6 and the layer board locking lever 7 is the axis center direction mutually perpendicular, thereby is accomodate in base 1 better, and steady transmission, no rigid impact, the low noise.

With reference to fig. 2 to 4, in one of the preferred embodiments of the present invention, the base 1 is provided with a locking block movable groove 12, the locking block movable groove 12 is provided with a supporting plate locking block 13 sliding along the inner wall thereof, one side of the supporting plate locking block 13 is provided with a holding cavity 14 cooperating with the supporting plate locking elastic sheet 8. The cooperation of above-mentioned structure, adopt layer board locking shell fragment 8 as the locating part of restriction layer board locking block 13 stroke, under the lock-out condition, layer board locking block 13 is under the elastic force effect of layer board locking shell fragment 8, with take place the contact between the layer board 3, make layer board 3 spacing not take place relative motion between the base 1 by current position, office chair's gesture can be fixed, when needs unblock, when drive handle 6 drives layer board locking shell fragment 8 around the axle center downstream of layer board locking lever 7, separate between layer board locking block 13 and the layer board 3, layer board 3 is released, thereby can change office chair's gesture. The arrangement of the accommodating cavity 14 should be understood that, before the elastic yield limit of the supporting plate locking elastic sheet 8 is not overcome and the limit of the locking block movable groove 12 to the supporting plate locking block 13 in other directions is overcome, the accommodating cavity 14 can enable the supporting plate locking elastic sheet 8 to elastically deform only within the limit range allowed by the supporting plate locking elastic sheet, so as to control the locking, namely rising, state of the supporting plate locking block 13 or the unlocking, namely falling, state of the supporting plate locking block 13.

As shown in fig. 2 to 4, in one of the preferred embodiments of the present invention, the bottom surface of the supporting plate 3 is provided with a plurality of positioning grooves 15 corresponding to the end surfaces of the supporting plate locking blocks 13, and the end surfaces of the supporting plate locking blocks 13 are provided with positioning blocks 16 matched with the positioning grooves 15. In this embodiment, by utilizing the mutual engagement between the positioning grooves 15 and the positioning blocks 16, the supporting plate 3 can be arbitrarily combined with the positioning blocks 16 within a length interval between the plurality of positioning grooves 15, so that the office chair has a plurality of different posture gears.

Combine fig. 1 to fig. 4 to show, the utility model discloses one of the preferred embodiment, briquetting 4 is the n font, base 1 is equipped with storage tank 17 at the bilateral symmetry of briquetting 4, one end in the storage tank 17 is connected with reset spring 18's one end along its trend, the below of 5 one ends of spout be equipped with storage tank 17 matched with contradicts piece 19, the one side of piece 19 with reset spring 18's the other end offsets, under the cooperation of above-mentioned structure, the quantity of spout 5 is unanimous with briquetting 4's stabilizer blade quantity, and is 2, relative displacement between layer board 3 and the base 1 is more accurate, especially supports that contact piece 19 and storage tank 17 has avoided taking place between layer board 3 and the base 1 and is not parallel to rocking by a wide margin of 5 trends of spout, simultaneously, 2 cooperation between two stabilizer blades of spout 5 and briquetting 4 also better make the transition fit between layer board 3 and the briquetting 4, guide layer board 3 is at the within range uniform movement of spout 5, avoids briquetting 4's deviating from and briquetting 4 and the collision between layer board 3 and the briquetting 4, and the briquetting 4 structure intensity is also better, and the default posture is favorable to the user of adjusting of the chair, and the release of the basis is also, and the convenient for the release state, and the chair is said to adjust the user in addition.

Combine fig. 3 to show, the utility model discloses one of the preferred embodiment is located the low damping cushion 9 of the 3 bottom surfaces of layer board between layer board 3 and the base 1 is single PU adhesive tape, and this structure is succinct and clear, and layer board 3 passes through the setting of PU adhesive tape, can reduce by a wide margin and base 1 between impact and frictional force, and then reduce the noise volume that takes place between the two.

Referring to fig. 3, in one of the preferred embodiments of the present invention, the low damping elastic pad 9 disposed on the bottom surface of the pressing block 4 between the pressing block 4 and the supporting plate 3 is a single PU rubber strip. In the same manner as the previous embodiment, the pressing block 4 is arranged on the supporting plate 3 through the PU adhesive tape, so that impact and friction between the pressing block and the supporting plate can be greatly reduced, and the noise generated between the pressing block and the supporting plate can be further reduced.

The utility model has the advantages of that:

1) After the pressing block 4 is fixedly connected with the base 1, the sliding chute 5 realizes the mutual limiting and matching between the supporting plate 3 and the base 1, and a more closed and stable plane four-bar structure is integrally formed, and the integral state is switched without adjusting the tightness of screws;

2) Meanwhile, the elastic supporting plate locking structure meshed and connected with the supporting plate locking rod 7 is used for releasing and locking the supporting plate 3, the supporting plate 3 and the locking piece are limited in an elastic connection mode, and the locking piece is driven in a meshing connection mode, so that the driving accuracy is ensured, elastic deformation space exists in the matching of different components, the influence of impact force among the components is reduced, and the noise volume is reduced;

3) In addition, there is the low damping cushion 9 that is no less than 1 department between layer board 3, briquetting 4 and base 1 for relative kinetic friction is littleer each other, and further cushions each other's extrusion, noise reduction.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides an office chair base, includes the base, the rear end rotatable coupling of base has the back of the chair connecting piece, back of the chair connecting piece rotatable coupling has the layer board, fixedly connected with briquetting in the base, the spout of locating the layer board is passed to the upper end of briquetting, makes the layer board is spacing in the below of briquetting, and follows the spout slides for the briquetting, its characterized in that, the side rotatable coupling of base has the handle, the perpendicular to the axial meshing of handle is connected with the one end of layer board locking lever, the other end perpendicular to layer board locking lever moves towards and is equipped with layer board locking shell fragment.

2. An office chair base as claimed in claim 1, wherein the support plate is provided with a low damping resilient pad on the bottom surface of the support plate between the support plate and the base, and the pressing block is provided with a low damping resilient pad on the bottom surface of the pressing block between the pressing block and the support plate.

3. The office chair base as claimed in claim 1 or 2, wherein the handle is axially provided with a bevel gear, the tray locking lever is vertically rotatably coupled to one side of the handle, and the tray locking lever is axially provided with an engaging section engaged with the bevel gear.

4. The office chair base according to claim 3, wherein the base is provided with a locking block movable groove, the locking block movable groove is provided with a supporting plate locking block sliding along the inner wall of the locking block movable groove, and one side of the supporting plate locking block is provided with an accommodating cavity matched with the supporting plate locking elastic sheet.

5. An office chair base as claimed in claim 4, wherein the bottom surface of the supporting board is provided with a plurality of positioning grooves corresponding to the end surfaces of the supporting board locking blocks, and the end surfaces of the supporting board locking blocks are provided with positioning blocks matched with the positioning grooves.

6. The office chair base as claimed in claim 1, wherein the pressing block is n-shaped, the base is symmetrically provided with accommodating grooves at two sides of the pressing block, one end of the accommodating groove is connected with one end of a return spring along the moving direction of the accommodating groove, a contact block matched with the accommodating groove is arranged below one end of the sliding groove, and one side of the contact block is abutted against the other end of the return spring.

7. The office chair base according to claim 2, wherein the low damping elastic pad provided on the bottom surface of the support plate between the support plate and the base is a single PU rubber strip.

8. The office chair base according to claim 2, wherein the low damping elastic pad provided on the bottom surface of the pressing block between the pressing block and the supporting plate is a single PU rubber strip.