CN2657487Y - Improved structure of office automation dual-purpose office chair - Google Patents

Abstract

The utility model relates to an automatic dual-purpose office chair of office of improvement structure. The utility model discloses a be equipped with a spout on the chair frame base, be equipped with the fixed orifices of three different positions on this spout, through the different position fixed orifices on the spout, can make the smooth back of the chair connecting rod of establishing in the spout, height according to different users, and fix a position suitable fixed orifices on adjusting lever and the spout of back of the chair connecting rod one end, thereby make the computer operation user's of different heights knee can offset with the back of the chair cushion on the back of the chair connecting rod and lean on, utilize the control lever on the chair frame base simultaneously, the inclination of adjustment chair cushion, see through the back of the chair cushion that is inclination and the back of the chair connecting rod of utensil angle of buckling, thereby the computer operation user who has messenger different heights takes comfortable function, it is really a utility model who fairly has the industrial utilization value.

Description

Improved structure of office automation dual-purpose office chair

technical field

The utility model relates to an office chair, in particular to an office automation (OA) dual-purpose office chair with an improved structure that can be used in general desks and computer operating environments.

Background technique

The structural improvement of the existing common office chairs can be mainly divided into the following two types:

One is such as the No. 524076 Taiwan New Patent Announcement "Chair with Angle Adjustment Control Mechanism" (see Annex 1 for details, that is, the announcement text of the Taiwan New Patent Announcement No. 524076 "Chair with Angle Adjustment Control Mechanism"), as shown in Figure 13 The angle adjustment device for the seat of an office chair proposed by this patent is mainly to provide a box seat in the recess of the seat seat, and a housing frame is welded on one side of the box seat, and a spring is arranged in the housing frame, and the housing frame On the other side of the box seat, there are multiple spinning cone-shaped connectors and sleeves, wherein the connectors, sleeves and springs are worn on the push rod in the box seat, and the push rod is fixed by a nut. On the other side of the box seat, there is another push-pull device, the push-pull device includes a push block pivotally arranged on the seat, one end of the push block is provided with a more protruding push section and a concave release section, The other end is tightly fitted with a trigger rod, so that when the trigger rod is pushed upwards, the pushing section at one end of the pushing block will push against the push rod, and the push rod will push against the spring and force the casing to Move outward, so that the connecting body on the push rod is loosened, so as to achieve the effect of adjusting the seat. On the contrary, when the trigger lever is pushed down, because the push end of the push block does not resist the push rod, Furthermore, through the restoring elastic force of the spring in the accommodating frame, the connecting body is shrunk again, so as to achieve the function of fixing the seat.

However, this seat angle adjustment structure has some disadvantages as follows:

First, the accommodating frame and the box seat are joined by welding, which will inevitably cause additional expenditure on welding costs, and the use of welding will also cause the disadvantage of insufficient overall structural strength of the accommodating frame;

Second, the spring in the housing frame is a high-strength spring with a large diameter, so the force of pushing the trigger lever is relatively increased, but the connection method between the trigger lever and the push block is achieved by tight fit. As a result of the connection, when the trigger rod is repeatedly pushed with a large force for a long time, it is easy to cause the defect that the trigger rod and the pushing block will fall off.

In addition, Taiwan New Patent Announcement No. 524076 "Chair with Angle Adjustment Control Mechanism" mainly has a retaining wall part welded on the base, and a tapered connecting body is provided between the retaining wall part and the other side of the base , gaskets and push tubes, and the right side wall of the base is provided with a tie rod that runs through the retaining wall, the gasket, the connecting body and the push tube, and the end of the tie rod protrudes from the left side wall of the base On the outside, the protruding end is provided with a fixed spring and a pressure plate, and finally, it is fixed by a nut, and the other end of the tie rod is flat, and a pull groove is provided at an appropriate place, which can be used for the buckle device. The hook bar is hooked in; in this way, the hook bar is pushed upwards, and the tie rod is loosened, thereby releasing the space between the spacer, the connecting body and the push tube on the tie bar, so that the seat can freely adjust the up and down tilt angle .

But above-mentioned " chair with angle adjustment control mechanism " also has shortcoming as follows:

First, the chair with the angle adjustment control mechanism is only provided with a pull groove on the flat end of the tie rod for hooking the hook rod to control the movement of the linkage tie rod. When the tie rod is pulled to move It takes a lot of effort, which will inevitably lead to the disadvantage of damage to the groove structure at the flat end of the tie rod with poor structural strength;

Second, this kind of chair with an angle adjustment control mechanism has too many combined components, which not only causes material cost expenditure, but also causes the disadvantage of time-consuming assembly in the future;

Third, the above two kinds of office chair structures only have a single desk work environment. In such a diversified information age, it is inevitable to use computer work. It will cause the user to ride uncomfortable, which will affect the overall work efficiency. If you want to buy a computer office chair separately, it will cause a burden to the industry. In addition, in Taiwan's environment where land is very expensive, the office space is quite small. Using two kinds of office chairs at one time will cause the problem of insufficient space. Therefore when using, utilize this kind of structure, seem not to have practicability quite.

The applicant of this case once proposed Taiwan New Patent Announcement No. 347680 "Improved Office Automation (OA) Office Chair", which was mainly designed for the above-mentioned single-function office chair structure. As shown in Figure 14, this novel "improved office automation (OA) office chair" is mainly to be provided with a slide rail 20' on both sides of the seat back bottom 2', and the slide rail 20' can be slid on the chair back base. The sliding assembly 21' of the chair back link 22' on the 2' is adjusted by sliding. In addition, an adjustment assembly 42' that can adjust the inclination angle of the seat back base 2' is provided at an appropriate position of the chair frame base 3';

In this way, when the chair back link 22' and the chair back base 2' are in an upright shape, it can be used in a general desk work environment, and when it is necessary to use the computer in front of the computer desk, it is only necessary to pull down the adjustment assembly 8' At the same time, the fixed rod 83' that fixes the seat back link 22' moves downward, so that the seat back link 22' can slide freely on the slide rail 20', and then the seat back link 22' bends downward. Fold and tilt, on this basis, adjust up and down through the movable adjustable kneeling (back) pad 5' on the chair back connecting rod 22', so as to achieve the effect of making the user's knee lean against comfortably;

In addition, the adjustment assembly 42' provided at the lower end of the chair frame base 3' can also be used to adjust the inclination angle of the chair frame base 3' by screwing and pushing, so that the user's center of gravity is slightly tilted forward. The device can enable users in the computer working environment to have the best sitting posture.

However, this "improved office automation (OA) office chair" has dual use effects for general desks and computer work environments, but it has been found to have the following disadvantages after years of use by the inventor:

First, when the chair back connecting rod is bent into a computer chair, the slide rail on the chair back base can only be used to fix the sliding component on the chair back connecting rod at a single bending angle, so only the chair back Kneeling (back) pads with short movement and adjustment space on the connecting rod cannot be used by people of different heights;

Second, secondly, only relying on the poor structural strength and easy-sliding cylindrical fixing rod to support the seatback link that bears the weight of the user's body will easily cause the fixing bar to slip or break, and when the seatback link needs to be bent , you must first pull down the fixing rod to move the seat back link, which will also result in time-consuming adjustment of the seat back link;

Third, the inclination angle adjustment method of the seat back base is adjusted by using the tapping adjustment components, and the weight of the user will be fully borne by the small adjustment components. When the user is overweight or used for a long time, It is very easy to cause the adjustment components to generate chipping.

This shows that the office automation (OA) dual-purpose office chair of above-mentioned existing improved structure still has many defects, and urgently needs to be further improved.

In view of the defects of the existing improved structure of office automation (OA) dual-purpose office chairs, the designer actively researches and innovates based on his rich practical experience and professional knowledge in the design and manufacture of such products, in order to create a The office chair of the novel structure can improve the conventional improved office automation (OA) office chair structure on the general market, making it more practical. Through continuous research, design, and after repeated trial samples and improvements, the utility model with practical value is finally created.

Contents of the invention

The main purpose of the utility model is to overcome the defects of existing office chairs, and provide a dual-purpose office chair for office automation (OA) with an improved structure. The main technical problem to be solved is to make it available for general desks and The dual function of the computer working environment makes the new structure more reasonable, thereby improving the convenience and comfort of the user.

Another purpose of the utility model is to provide a dual-purpose office chair for office automation (OA) with an improved structure. Enhanced efficacy, and has industrial utilization value.

The purpose of this utility model and the solution to its main technical problems are achieved by adopting the following technical solutions. A dual-purpose office chair for office automation with an improved structure mainly includes: an office chair body, which is composed of an adjustment base, a chair frame base, a chair back connecting rod and a control device; There is a chair frame base, the upper end of the chair frame base is provided with a seat cushion for riding, and the chair frame base is provided with a sliding groove and a positioning groove by default, and a plurality of fixing holes are arranged on the sliding groove; the chair back connecting rod , one end of which is provided with an adjustment rod that can be selectively positioned in the fixing hole of the chute, and a fixing rod that can be positioned in the default positioning groove of the chair frame base; the control device includes a pivot assembly installed inside the chair frame base , springs, tubes, gaskets, a plurality of detent pieces and sockets on the outside of the chair frame base, and cross bars passing through the above components; wherein the pivot joint assembly with springs is installed on the inside of the chair frame base, and the pivot Between the connecting component and the base of the chair frame, there are pipes, gaskets and a plurality of detents that are screwed to the seat cushion. , the inner pivot of the socket is provided with a control rod in a linkage relationship with the pivot assembly, and the socket, pivot assembly, spring, pipe body, gasket and a plurality of stoppers pass through the cross bar on the chair frame base Through the fixing holes at different positions in the chute of the chair frame base, it is used for the selective positioning of the adjustment rod set by the chair back connecting rod slid in the chute of the chair frame base, so that the seat back The connecting rods have different bending angles, and at the same time cooperate with the chair frame base whose inclination angle can be adjusted, so that users of different heights can achieve the best riding comfort.

The purpose of this utility model and its main technical problems can also be further realized by adopting the following technical measures.

The aforesaid improved structure of office automation dual-purpose office chair, wherein the lower end of the chair cushion is screwed with a gasket, and the lower end of the gasket is provided with a pivot ear that is screwed with the second hole of the chair frame base, and the chair frame base An adjustment component that can control and adjust the height of the base is provided at an appropriate place.

In the aforesaid dual-purpose office chair for office automation with improved structure, five brake wheel bodies are arranged at the lower end of the adjustment base.

Compared with the prior art, the utility model has obvious advantages and beneficial effects. As can be seen from the above technical solutions, in order to achieve the aforementioned object of the invention, the main technical contents of the utility model are as follows:

An office automation (OA) dual-purpose office chair with an improved structure, which includes an adjustment base for support, and a chair frame base for placing a chair cushion on the upper end of the adjustment base. The chair frame base is composed of a symmetrical sheet It is formed, wherein an adjustment component that can control the adjustment base to move up and down is provided at the default position of the chair frame base, and a chute is provided on both sides of the chair frame base, and the chute can be slid for a chair back connecting rod, and the slide At the appropriate place of the groove, there are different position fixing holes for the bending and positioning of the chair back connecting rod; one end of an L-shaped chair back connecting rod is provided with an adjustment rod fixed in the fixing hole of the chute, and the other end is There is a back pad that can be adjusted up and down, and a fixed rod that can be positioned with the default positioning groove at the chair frame base is provided between the adjustment rod and the back pad; The second hole of the chair frame base is provided with a first hole at one end of the chair frame base, and a strip-shaped groove is provided on both sides of the first hole on the side of the chair frame base, and the groove can be used for a control device to pass through. Set; the control device includes: a pivoting component pierced in the groove, one end of the pivoting component is provided with a perforation, the perforation can be used for a cross bar to pass through, and a corresponding one is pierced on both sides of the pivoting component A through hole, the through hole can be used for a positioning pin to pass through; a socket, one end of the socket is provided with a through hole through which the pivot assembly is penetrated, and the socket provided outside the pivot assembly is connected with the chair The frame base is in an abutting relationship; a cross bar, the cross bar penetrates the first hole on one side of the chair frame base, and then penetrates into the spring contained in the pivot assembly and the pivot assembly is perforated and continues to pass through Insert the bushing, gasket, a plurality of detent pieces and the first hole on the other side of the chair frame base, and screw them tightly through a screw, and the detent piece pierced on the cross bar is provided with a The hole part connected to the pivot ear of the gasket at the lower end of the seat cushion and the slide groove for adjusting the inclination angle of the seat cushion; a control rod, which is accommodated at the through hole of the pivot assembly, and the control rod is corresponding to the through hole There is a through hole for the positioning pin to pass through;

A locating pin, the locating pin is passed through the notch of the sleeve, the through hole of the pivot assembly and the through hole of the control rod accommodated in the pivot assembly, and finally is fastened by a C-shaped buckle to make the control rod It is in a linkage relationship with the pivot assembly.

The utility model allows computer operators of different heights to choose the most suitable fixing hole according to their own heights, and then realizes the best ride comfort function during their computer operations, which improves the existing improved OA office chair, because The chair back link only has a single bending angle, which makes it only suitable for users of a certain height;

The utility model can completely distribute the load of the connecting rod of the chair back to the base of the chair frame evenly through the fixing rod, instead of the existing improved OA office chair, which only uses the small fixing rod with poor structural strength to fix the back of the chair The connecting rod is therefore easy to concentrate on the fixed rod due to the load of the chair back connecting rod, thereby causing the shortcoming that the fixed rod is broken.

The utility model has a simple structure, thereby greatly reducing costs and improving economic benefits.

It can be seen from the above technical solutions that the utility model has obvious advantages and beneficial effects compared with the prior art. The utility model does not have the defects of the existing improved OA office chairs when in use, and can make the structure of the utility model more stable and varied, so it can achieve considerable practicability and has wide industrial application value Hereby, the advantages of the utility model are specified as follows:

To sum up, the office automation (OA) dual-purpose office chair with the improved structure of the utility model has the above-mentioned many advantages and practical value. The utility model has multiple enhanced functions, is simple in structure, is suitable for practical use, and has wide industrial application value. In the field of limited technological development space, it has made great improvements in both structure and function, and has made great progress in technology, and has produced easy-to-use and practical effects, and indeed has enhanced efficacy. , thereby being more suitable for practicality, it is a novel, progressive and practical new design.

The specific embodiment of the utility model is given in detail by the following examples and accompanying drawings.

Description of drawings

Fig. 1 is the exploded schematic diagram of the office automation (OA) dual-purpose office chair of improved structure;

Fig. 2 is a schematic diagram of part of combined appearance of office automation (OA) dual-purpose office chair with improved structure;

Fig. 3 is the appearance schematic diagram of the office automation (OA) dual-purpose office chair of improved structure;

Fig. 4 is a schematic diagram of a desk seat posture of an office automation (OA) dual-purpose office chair with an improved structure;

Fig. 5 and Fig. 6 are the schematic diagrams of the seat posture adjustment action of the office automation (OA) dual-purpose office chair with improved structure for computer operations;

Fig. 7 is the appearance schematic diagram of the posture appearance of the computer seat of the office automation (OA) dual-purpose office chair with improved structure;

Fig. 8 and Fig. 9 are the schematic diagrams of the seat pad adjustment action of the office automation (OA) dual-purpose office chair with improved structure;

Figure 10 is a schematic diagram of the appearance of the inclination angle of the seat cushion of the office automation (OA) dual-purpose office chair with an improved structure;

Fig. 11 is a schematic diagram of another bending angle adjustment of the chair back connecting rod of the office automation (OA) dual-purpose office chair with an improved structure;

Fig. 12 is a schematic diagram of another bending angle adjustment of the chair back connecting rod of the office automation (OA) dual-purpose office chair with an improved structure;

Fig. 13 is a schematic diagram of an office chair seat angle adjustment device;

Fig. 14 is a device schematic diagram of an office automation (OA) dual-purpose office chair with an improved structure.

1. Office chair body 10. Adjust base 11. Chair cushion

12. Chair frame base 13. Chute 14. Chair back link

15. Fixing hole 16. Adjustment lever 17. Back pad

18. Fixing rod 19. Locating slot 20. Gasket

21. First hole 22. Second hole 23. Groove

30. Control device 31. Pivot assembly 32. Perforation

33. Cross bar 34. Through hole 35. Locating pin

36. Socket 37. Through hole 38. Spring

39. Sleeve 40. Gasket 41. Detent piece

42. Screws 43. Holes 44. Sliding grooves

45. Control lever 47. Missing slot 48. Perforation

50. C-type buckle 60. Wheel body 70. Adjustment components

2’. Sit on the back of the chair 3’. The base of the chair frame 5’. Kneeling (back) cushion

8’. Adjustment assembly 20’. Slide rail 21’. Slide assembly

22'. Seat Back Linkage 42' Adjustment Assembly 83' Fixed Rod.

Detailed ways

Below in conjunction with accompanying drawing and preferred embodiment, to the specific implementation, structure, feature and effect of the office automation (OA) dual-purpose office chair of improved structure proposed according to the utility model, detailed description is as follows.

Please refer to Fig. 1, Fig. 2 and Fig. 3. The utility model relates to a dual-purpose office chair for office automation (OA) with an improved structure. The utility model mainly includes: an office chair body 1, the office chair body 1 includes An adjustment base 10 for support, the upper end of the adjustment base 10 is provided with a chair frame base 12 with a chair cushion 11, the chair frame base 12 is composed of symmetrical sheets, wherein the chair frame base 12 is provided by default An adjustment component 70 that can control the adjustment base 10 to move up and down is provided at the place, and a chute 13 is provided on both sides of the chair frame base. There are different position fixing holes 15 for the bending and positioning of the seat back connecting rod 14;

An L-shaped chair back link 14, the shorter end of the chair back link 14 is provided with an adjustment rod 16 that can be slid in the chute 13 of the chair frame base 12, and the longer end is provided with an adjustment rod 16 that can be adjusted up and down. The back pad 17 of the back pad 17 is provided with a fixed rod 18 between the adjustment rod 16 and the back pad 17. The fixed rod 18 can be accommodated in the positioning groove 19 provided at the default position of the chair frame base 12, so that the chair frame base 12 and the The chair back connecting rod 14 is straight;

In addition, the chair frame base 12 is provided with a second hole 22 at an appropriate place for screwing the lower end of the gasket 20 in a threaded relationship with the chair cushion 11. One end of the chair frame base 12 is also provided with a first hole 21. The two sides of the first hole 21 on one side of the chair frame base 12 are provided with a strip-shaped groove 23, and the groove 23 can be used for a control device 30 to pass through;

The control device 30, the control device includes a pivot assembly 31 that is penetrated in the groove 23 and is ㄈ-shaped, and one end of the pivot assembly 31 is provided with a perforation 32, and the perforation 32 can be used for a cross bar 33 to pass through, and the pivot A corresponding through hole 34 is pierced on both sides of the connector assembly 31, and the through hole 34 can be used for a positioning pin 35 to pass through;

A sleeve 36, one end of the sleeve 36 is provided with a through hole 37 for the pivot assembly 31 protruding outside the groove 23 to pass through, and the sleeve is set outside the pivot assembly 31, and is connected with the chair The frame base 12 is in an abutting relationship;

A cross bar 33, the cross bar 33 penetrates the first hole 21 on one side of the chair frame base 12, and then penetrates the spring 38 accommodated in the pivot assembly 31 and the pivot assembly 31 through the hole 32 and continues to pass through Insert the casing 39, the gasket 40, a plurality of detents 41 and the first hole 21 on the other side of the chair frame base 12, and tighten it by screwing a screw 42, and it is threaded on the cross bar 33 The stop piece 41 is provided with a hole 43 which is pivotally connected to the gasket 20 at the lower end of the seat cushion 11 and a sliding groove 44 for adjusting the inclination angle of the seat cushion 11;

A control rod 45, the control rod 45 is accommodated at the through hole 34 of the pivot assembly 31, and the control rod 45 is provided with a through hole 48 for the positioning pin 35 to pass through corresponding to the through hole 34;

A positioning pin 35, the positioning pin 35 is set in the slot 47 of the sleeve 36, the through hole 34 of the pivot assembly 31 and the control rod accommodated in the pivot assembly 31, and finally passes through a C-shaped buckle 50 to buckle close, so that the control lever 45 and the pivot assembly 31 are in a linkage relationship, the above is the "structurally improved OA dual-purpose office chair" proposed by the present invention.

Please refer to Fig. 4, wherein when the fixed rod 18 of the chair back link 14 is accommodated and positioned in the positioning groove 19 of the chair frame base 12, the chair back link 14 is in an upright shape which is most comfortable for general desk work. When it is necessary to use a computer to work, it is only necessary to lift the chair back connecting rod 14 forward and upward, so that the fixed rod 18 is separated from the positioning groove 19 of the chair frame base 12. At this time, the adjusting rod 16 of the chair back connecting rod 14 will slide The front end of the slot 13 slides to the rear end (as shown in Figure 5), and then the seat back link 14 is adjusted backward and downward, so that the adjustment rod 16 of the seat back link 14 falls into the fixed position provided at the uppermost end of the chute 13. hole 15 (as shown in Figure 6), at this time the user can lean their buttocks against the seat cushion 11, while the knees of both legs lean against the back cushion 17 of the chair back link 14 (as shown in Figure 7 Shown), so that the user of the computer operation can achieve the best sitting posture. Moreover, the inventor of the present invention is not satisfied with this design. After all-round consideration, it is found that only when the seat cushion 11 is at a specific inclination angle can the computer user achieve the best ride comfort. Therefore, a special adjustment is made. For the control device 30 for the inclination angle of the seat cushion 11, please refer to FIG. Move laterally, at this time, the sleeve pipe 39 is loosened by the movement of the pivotal assembly, the sleeve pipe 39, the gasket 40 and the catch piece 41, and then the chair frame base 12 is lifted upwards, and at this time, the seat set by the catch piece 41 is used. slide 44), make the stop piece 41 screwed with the washer 20 on the chair frame base 12 be tilted and raised to the required angle, then press the control rod 45 down (as shown in Figure 9), and see through Through the restoring force generated by the spring 38 in the pivotal assembly 31, the pivotal assembly 31 is pushed back to reset, thereby achieving the purpose of fixing the catch piece 41 with an inclined angle;

Through the inclined chair cushion 11, the user's center of gravity can be slightly tilted forward (as shown in FIG. 10 ), so that the computer user's center of gravity can be absorbed by the back cushion 17 on the back link 14 , so that users who work on the computer for a long time can completely relax physically and mentally, thereby achieving better work efficiency.

Secondly, the utility model considers that the height of the user is different, therefore, the chute 13 of the chair frame base 12 is specially provided with three fixing holes 15 at a distance from each other. In the above-mentioned mode of operation, the adjustment rod 16 of the seat back link 14 is slid and positioned in the fixing hole 15 at the lower end, at this moment, the angle of the seat back link 14 tilting backward is larger (as shown in Figure 11 ), like this Just can make the knee of the taller person lean against the back pad 17 on the chair back connecting rod 14, so as to achieve the purpose of riding comfortably. The back link 14 is bent backward at a larger angle (as shown in FIG. 12 ), so the three-stage fixing hole 15 on the chute 13 is designed to be suitable for users of different heights.

In addition, in order to make the OA dual-purpose office chair with improved structure of the utility model have good safety, to prevent the computer operator from sliding the body 1 of the office chair when the center of gravity leans forward and causing safety accidents for the user, it is also Five wheel bodies 60 with brake function can be provided at the lower end of the adjustment base 10 to prevent the office chair body 1 from slipping, thereby ensuring the safety of the user.

Finally, the pivot assembly 31 of the present invention is nested with the chair frame base 12 in a movable way, which can avoid the disadvantages of time-consuming welding and unstable physical structure strength caused by high-temperature welding, and the control rod 45 The positioning pin 35 with better structural strength is pivotally connected with the pivot assembly 31 , so that there is no need to worry about the defect that the control rod 45 will fall off due to excessive pulling force.

The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model in any form. Any person familiar with this technology may use the technical content disclosed above to change or modify it into an equivalent change, etc. Effective embodiments, all the content that does not depart from the technical solution of the utility model, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (3)

1, the dual-purpose office chair of a kind of structure improved office automation is characterized in that it mainly comprises:

The office chair body, it is adjusted pedestal, chair frame base, chair back connecting rod and a control device by one and is constituted;

Adjust pedestal, its upper end is provided with a chair frame base, and this chair frame base upper end is provided with a chair cushion of Gong taking in addition, and chair frame base acquiescence place is provided with chute and locating slot, wherein on this chute and be provided with a plurality of fixing holes;

Chair back connecting rod, one end are provided with the accent lining bar that alternative is positioned at the chute fixing hole, and can be positioned on the fixed bar in the chair frame base acquiescence place locating slot;

Control device, it comprises that one is contained in the Coupling of pin connected assembly, spring, body, pad, a plurality of stopper sheet and the chair frame chassis outer side of chair frame base inboard, and the cross bar that wears said modules;

The pin connected assembly that spring wherein is housed is located in chair frame base inboard, a plurality of stopper sheets of body, pad and a plurality of and chair cushion bolt are housed between pin connected assembly and chair frame base, the convex exposure end that is located in the pin connected assembly of chair frame base is equipped with Coupling, be pivoted with the control lever that is continuous action relation with pin connected assembly in this Coupling, Coupling, pin connected assembly, spring, body, pad and a plurality of stopper sheet wear by the cross bar on the chair frame base.

2, the dual-purpose office chair of structure improved office automation according to claim 1, it is characterized in that wherein said chair cushion lower end snail is provided with a pad, this pad lower end is provided with the pivot ear established of spiral shell mutually with second hole portion of chair frame base, and chair frame base appropriate location is provided with one can control the adjustment assembly of adjusting the pedestal height.

3,, it is characterized in that wherein said adjustment pedestal lower end is provided with five brake wheel bodys according to the dual-purpose office chair of the described structure improved office automation of arbitrary claim in the claim 1 to 2.

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