CN2643746Y - Improved structure of chair - Google Patents

Abstract

An improved structure of a seat mainly comprises: the movable frame and the front end of the fixed frame are pivoted into a whole by a pivot shaft passing through a pivot hole and an elastic element in the middle of the movable frame; the elastic sheet of the limiting device is fixedly arranged at the tail end of the fixed frame, the shaft tube of the limiting device, the adjusting gear and the eccentric cam which are welded and fixed are arranged between the slotted holes at the two sides of the movable frame, the adjusting gear and the eccentric cam are respectively provided with corresponding non-circular embedded holes, after two sleeve blocks respectively pass through the through holes and the slotted holes of the fixed frame and the movable frame, the adjusting shaft rod penetrates through the through holes and the slotted holes to be embedded and fixed, the adjusting gear on the shaft is just clamped and positioned by the elastic sheet, the clamping end faces of the eccentric cams at the two sides on the shaft are propped against the lower end face of the movable frame, and the movable frame is enabled to downwards present an inclination angle by rotating the adjusting shaft rod, so that the inclination angle can be conveniently adjusted.

Description

Improved structure of the seat

technical field

The utility model relates to an improved structure of a seat, in particular to a seat which can conveniently adjust the inclination angle of the movable frame of the seat cushion, so that the user has moderate elasticity when sitting on it, has more comfortable use and excellent practical effect. Improved structure of the chair.

Background technique

With the transformation of the social form, the working status of most people has changed from the early labor to the brain, so that in many cities, a large number of office buildings with different heights are everywhere, and in the offices inside such buildings, it is impossible to Among the various furniture that is missing, the most important are various chairs that people sit on and work for a long time. With the advancement of science and technology, after continuous improvement and research and development, the various functions of this kind of chairs have become more and more diverse and complete, such as: the adjustment of the height of the seat cushion, the adjustment of the inclination angle of the backrest, etc. Users sit and work on it for a long time in the most ergonomic and comfortable posture.

The structure of this type of general chair, although the user can feel comfortable and get a rest when riding, the seat cushion of this type of chair does not have any structure that can adjust the tilt angle, so that the comfort of use is limited. It is not possible to make the seat cushion swing with the shaking of the user, which seems a bit of a fly in the ointment.

In view of this, I have been engaged in the design and manufacture of related industries for many years, and through repeated exploration, research, design and testing, I have finally developed the utility model.

Contents of the invention

The main purpose of this utility model is to provide an improved structure of a seat, which can easily adjust the tilt angle of the seat cushion, and has moderate elasticity, so that the seat is more comfortable to use and has excellent practical effects. .

In order to achieve the above purpose, the improved structure of a seat of the utility model mainly includes: a movable frame, a fixed frame and a limiting device; The pivot hole of the pivot hole and the elastic element in the middle of the movable frame are pivotally connected together; the shrapnel of the limit device is fixed at the end of the fixed frame, and the shaft tube of the limit device together with the welded adjustment gear and eccentric cam It is placed between the slot holes on both sides of the movable frame, and the adjusting gear and the eccentric cam are respectively provided with corresponding non-circular embedded holes, and the two sets of blocks pass through the through holes and slot holes of the fixed frame and the movable frame respectively. , is fixed by an adjusting shaft pierced through, the adjusting gear on the shaft is just locked and positioned by the shrapnel, and the locking end faces of the eccentric cams on both sides of the shaft are against the lower end face of the movable frame, by rotating Adjust the shaft so that the movable frame presents a tilting angle downward.

Because the utility model maintains a normal inclination angle under the action of the elastic element pushing up against the fixed frame under normal conditions, when the user sits on the seat cushion combined with the movable frame, the movable frame is under the weight of the human body. Under the action, the elastic element is pressed downward, so that the rear end of the movable frame tilts downward to the limit position adjusted in advance by the limit device, and becomes a seat with an adjustable inclination angle of the seat cushion, which can be adjusted along with the user. The seat cushion can swing accordingly, which makes the seat more comfortable to use and has excellent practical effects.

Description of drawings

Fig. 1, is the three-dimensional exploded view of the utility model.

Fig. 2 is a top sectional view of the utility model.

Fig. 3 is a side sectional view of the utility model in a normal state.

Fig. 4 is a side sectional view of the utility model in use.

Fig. 5 is a schematic side view of the swing state of the utility model.

Detailed ways

In order to have a further understanding and understanding of the purpose of the utility model, technical features and effects thereof, a preferred embodiment is given hereby, and detailed description is as follows in conjunction with the accompanying drawings:

Referring to Fig. 1, an improved structure of a seat mainly includes: a movable frame 1, a fixed frame 2 and a limiting device 3; wherein:

The upper end surface of the movable frame 1 can be fixedly connected to the seat cushion, and the front ends on both sides of the movable frame 1 are respectively provided with corresponding pivot holes 11, and corresponding slot holes 12 are respectively provided at appropriate positions on both sides;

The lower end surface of the fixed frame 2 can be fixedly connected to the feet, and the front ends of both sides of the fixed frame 2 are provided with pivot holes 21 corresponding to the pivot holes 11 of the movable frame 1, and the pivot holes 21 are pierced with a pivot shaft. 22 and an elastic element 23, the slot 12 corresponding to the movable frame 1 on both sides of the fixed frame 2 is provided with a through hole 24;

The limiting device 3 includes two corresponding shaft tubes 31, an adjusting gear 32, a shrapnel 33, two corresponding eccentric cams 34, two sets of blocks 35 and an adjusting shaft rod 36; wherein: each shaft tube 31 Shaft holes 311 are all arranged inside, and the center of the adjustment gear 32 is provided with a smaller diameter than the shaft hole 311, and a non-circular embedded hole 321, each shaft tube 31 is welded to both sides of the adjustment gear 32 respectively, and makes Each shaft hole 311 and the embedded hole 321 of the adjustment gear are in a through shape, and the adjustment gear 32 can be locked and positioned by the elastic piece 33 fixed by the fixed element 331; Adjust the corresponding embedded holes 341 of the embedded holes 321 of the gear 32. The outer edges of each eccentric cam 34 are respectively provided with a number of clamping end faces 342. A set of blocks 35 are respectively inserted, and are embedded and fixed by an adjusting shaft 36 .

Referring to Figures 2 and 3, when the utility model is assembled, firstly, the pivot 22 passes through the pivot holes 11 and 21 between the movable frame 1 and the front end of the fixed frame 2, and the elastic element 23 is passed through the movable frame 1 together. Inside, the front end of the movable frame 1 and the fixed frame 2 is pivotally connected as one, and the elastic piece 33 of the limit device 3 is fixed on the end of the fixed frame 2 with the fixed element 331, and each shaft tube 31 together with the adjustment gear 32 and The eccentric cams 34 are placed between the slotted holes 12 of the movable frame 1, and each cover block 35 passes through the slotted holes 12 of the movable frame 1 and the through holes 24 of the fixed frame 2 respectively against the outside of each eccentric cam 34, and then a An adjustment shaft 36 provided with a non-circular clamping rod corresponding to the non-circular embedding hole is embedded and fixed from the center hole of the sleeve block 33 .

Referring to Figures 3-5, when the utility model is in use, under normal conditions, the movable frame 1 is pushed upward by the elastic element 23 to maintain a certain tilt angle; when the user sits on the upper end of the movable frame 1 When the seat cushion is used, due to the downward pressure of the human body's gravity, the movable frame 1 moves down to the position where the clamping end surface 342 of the eccentric cam 34 of the position-limiting device 3 resists, and the user can use the rotation to adjust the shaft rod 36 to make It drives the adjustment gear 32 to rotate to change the positioning position of the shrapnel 33, and the height of the different diameters of the clamping end faces of the eccentric cams 34 is used to adjust the tilting angle that the movable frame 1 can achieve.

Because the utility model can make the fixed seat cushion on the movable frame have the effect of adjusting its inclination angle, and has certain elasticity, so it can make the seat more comfortable and have better practical effects.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the scope of implementation of the present utility model. All the various changes and modifications made without violating the spirit and principles of the present utility model are all accepted. Should be covered within the scope of patent protection defined in the claims.

Claims (1)

1. An improved structure of a seat, which mainly includes: a movable frame, a fixed frame and a limit device; its feature is that: the front ends of the movable frame and the fixed frame pass through the pivot hole between each other and the middle of the movable frame by a pivot The elastic elements of the limiting device are pivotally connected together; the shrapnel of the limiting device is fixed at the end of the fixed frame, and the shaft tube of the limiting device is placed on both sides of the movable frame together with the welded adjustment gear and eccentric cam. Between the slotted holes, the adjusting gear and the eccentric cam are respectively provided with corresponding non-circular embedding holes. After the two sets of blocks respectively pass through the through holes and slotted holes of the fixed frame and the movable frame, an adjusting shaft rod passes through them. If it is embedded and fixed, the adjustment gear on the shaft is just locked and positioned by the shrapnel, and the locking end faces of the eccentric cams on both sides of the shaft are against the lower end face of the movable frame, and the movable frame can be adjusted by rotating the shaft rod. Presents a tilt angle downward.

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