Office chair bottom tray with buffering function

Abstract

The utility model relates to the technical field of office chair bottom trays, and discloses an office chair bottom tray with a buffering function, which comprises a lower connecting plate and an upper connecting plate, and further comprises a connecting rod component and a spring shock absorber which are fixed between the upper connecting plate and the lower connecting plate through bolts or by welding, wherein the lower end of the spring shock absorber is hinged to the lower connecting plate, the upper end of the spring shock absorber is hinged to the connecting rod component, and the connecting rod component comprises a lower tripod welded and fixed to the lower connecting plate and four inclined strut connecting rod arms hinged to the lower tripod. Wherein an upper tripod is hinged to the upper end of the inclined strut connecting rod arm, and an upper connecting plate is welded and fixed on the upper tripod. By means of oblique guiding of the connecting rod structure, stability and smooth performance in the buffering process are effectively improved, and compared with a traditional structure, the buffering device is more comfortable, larger in bearing capacity and longer in service life.

Description

TECHNICAL FIELD

[0001] The utility model relates to office chair bottom tray technical field especially a kind of office chair bottom tray with buffering function. BACKGROUND

[0002] The existing patent with the patent number (CN218164658U) provides a kind of office chair chassis with high stability, it is related to office chair technical field, including chassis, a pair of sleeve is inserted in the inside of chassis, the inside of sleeve is opened with sliding slot on both sides, connecting rod is slidably installed between sliding slot, the bottom end of connecting rod is fixedly installed with tray, double-shaft motor is fixedly installed in the inside bottom of chassis, the both ends of double-shaft motor are respectively sleeved with left-hand worm and right-hand worm, a pair of bearing seat is installed in the both ends of chassis, connecting shaft is sleeved between each pair of bearing seat, the center of both sides connecting shaft is respectively sleeved with left-hand worm wheel and right-hand worm wheel, the both ends of connecting shaft are sleeved with gear, the side of connecting rod is opened with rack, the side of sleeve close to rack is opened with arc slot, rack and gear are mutually engaged. The utility model can effectively improve the stability of office chair when working, and has high practical value;

[0003] But the seat bottom of existing traditional office chair is designed with C-shaped structure or pneumatic telescopic rod to achieve a certain degree of buffering, but on the one hand, the buffering effect is very limited, and on the other hand, it is relatively hard, not smooth and not comfortable.

[0004] The present case is proposed to improve and optimize the above problems or deficiencies. INVENTION CONTENTS

[0005] An office chair bottom tray with buffering function, comprising a lower connecting plate and an upper connecting plate, further comprising a connecting rod component fixed between the upper connecting plate and the lower connecting plate by bolts or welding, and a spring shock absorber, wherein the lower end of the spring shock absorber is hinged to the lower connecting plate and the upper end is hinged to the connecting rod component.

[0006] Preferably, the connecting rod component comprises a lower tripod welded to the lower connecting plate and four inclined strut connecting rod arms hinged to the lower tripod, wherein an upper tripod is hinged at the upper end of the inclined strut connecting rod arms, and the upper connecting plate is welded to the upper tripod.

[0007] Preferably, an arch arm is further hinged to the lower tripod, and the upper end of the arch arm is fixed to the crossbar of the upper tripod, and the upper end of the spring shock absorber is hinged to the arch arm.

[0008] Preferably, a plurality of gear hinge holes of different positions are arranged on the bow arm, the gear hinge holes are used as the hinge positions of the upper end of the spring shock absorber, and the spring shock absorber is selectively installed according to requirements, so that different seat bottom heights are obtained.

[0009] Preferably, a limit limiting buffer rubber sleeve support plate is further arranged, both ends of the limit limiting buffer rubber sleeve support plate are hingedly connected with the lower triangular frame and the upper triangular frame respectively, a limit limiting buffer rubber sleeve is fixedly arranged on the limit limiting buffer rubber sleeve support plate, a brake push plate is fixedly arranged at the front end of the bow arm, and the bow arm is configured to abut against the upper end face of the limit limiting buffer rubber sleeve when reaching a limit lower limit, so as to be protected.

[0010] Preferably, a ground support frame is further arranged on the lower end face of the lower connecting plate through bolts, the length of the ground support frame exceeds that of the inclined support connecting rod arm, so as to prevent the seat from falling backward and improve stability.

[0011] The utility model discloses the advantages and positive effects are:

[0012] 1. Through the oblique guidance of the connecting rod structure, the stability and smoothness in the buffering process are effectively improved, compared with the traditional structure, more comfortable, and the carrying capacity is larger, and the service life is longer. BRIEF DESCRIPTION OF DRAWINGS

[0013] The utility model will be further described below in connection with the drawings and examples.

[0014] Figure 1 It is the structural schematic diagram of the utility model;

[0015] Figure 2 It is Figure 1 Remove the structure schematic diagram of upper connecting plate 10 and part upper triangular frame 11, inclined support connecting rod arm 12.

[0016] Mark in the drawing: 10, upper connecting plate;11, upper triangular frame;12, inclined support connecting rod arm;13, limit limiting buffer rubber sleeve support plate;14, ground support frame;15, lower connecting plate;16, gear hinge hole;17, spring shock absorber;18, lower triangular frame;19, bow arm;20, brake push plate;21, limit limiting buffer rubber sleeve. DETAILED DESCRIPTION

[0017] The utility model will be further described below in connection with the drawings and examples.

[0018] The utility model example will be further described below in connection with the drawings:

[0019] As Figures 1-2 shown, the utility model discloses a bottom tray of office chair with buffering function, including lower connecting plate 15 and upper connecting plate 10, still including connecting rod component and spring shock absorber 17 through bolt or welding fixed between upper connecting plate 10 and lower connecting plate 15, wherein the lower end of spring shock absorber 17 is hinged on lower connecting plate 15 and the upper end is hinged on connecting rod component.

[0020] Preferably, the connecting rod component includes lower tripod 18 fixed on the lower connecting plate 15 and four inclined strut connecting rod arms 12 hinged on the lower tripod 18, wherein the upper end of the inclined strut connecting rod arm 12 is hinged with an upper tripod 11, and the upper connecting plate 10 is welded and fixed on the upper tripod 11.

[0021] Preferably, an arch arm 19 is also hinged on the lower tripod 18, and the upper end of the arch arm 19 is fixed with a horizontal rod on the upper tripod 11, and the upper end of the spring shock absorber 17 is hinged on the arch arm 19.

[0022] Preferably, a plurality of gear hinge holes 16 at different positions are arranged on the arch arm 19, which are used as hole positions for the upper end of the spring shock absorber 17 to select installation according to requirements, thereby obtaining different seat bottom heights.

[0023] Preferably, it also includes an extreme limit buffer rubber sleeve support plate 13, both ends of the extreme limit buffer rubber sleeve support plate 13 are hinged with the lower tripod 18 and the upper tripod 11 respectively, and an extreme limit buffer rubber sleeve 21 is fixedly arranged on the extreme limit buffer rubber sleeve support plate 13, the front end of the arch arm 19 is fixedly arranged with a brake push plate 20, and the arch arm 19 is configured to abut against the upper end surface of the extreme limit buffer rubber sleeve 21 when it reaches the extreme lower limit for protection.

[0024] Preferably, a ground support frame 14 is also fixedly arranged on the lower end surface of the lower connecting plate 15 through a bolt, the length of the ground support frame 14 exceeds the inclined strut connecting rod arm 12, avoiding the seat from falling backward to improve stability.

[0025] It should be emphasized that the embodiments of the utility model are illustrative rather than restrictive, and therefore the utility model is not limited to the embodiments described in the specific embodiments, and any other embodiments derived from the technical solution of the utility model by those skilled in the art also belong to the scope of protection of the utility model.

Claims

1. An office chair bottom tray with a cushioning function, characterized by: It comprises a lower connecting plate (15) and an upper connecting plate (10), further comprises a connecting rod component and a spring shock absorber (17) fixed between the upper connecting plate (10) and the lower connecting plate (15) by bolts or welding, wherein the lower end of the spring shock absorber (17) is hinged on the lower connecting plate (15) and the upper end is hinged on the connecting rod component; The connecting rod component comprises a lower tripod (18) welded on the lower connecting plate (15) and four diagonal bracing link arms (12) hinged on the lower tripod (18), wherein an upper tripod (11) is hinged at the upper end of the diagonal bracing link arms (12), and the upper connecting plate (10) is welded on the upper tripod (11); The lower tripod (18) is further hinged with a bow arm (19), and the upper end of the bow arm (19) is fixed with a horizontal rod on the upper tripod (11), and the upper end of the spring shock absorber (17) is hinged on the bow arm (19).

2. The bottom tray of the office chair with a buffering function according to claim 1, characterized in that: The bow arm (19) is provided with a plurality of gear hinged holes (16) at different positions, which are used as the hole position for the upper end of the spring shock absorber (17) to select the installation according to the requirements, thereby obtaining different seat bottom heights.

3. An office chair bottom tray with a cushioning function according to claim 2, characterized in that: It further comprises a limit limiting buffer rubber sleeve support plate (13), the two ends of the limit limiting buffer rubber sleeve support plate (13) are hinged with the lower tripod (18) and the upper tripod (11) respectively, and a limit limiting buffer rubber sleeve (21) is fixedly arranged on the limit limiting buffer rubber sleeve support plate (13), the front end of the bow arm (19) is fixedly provided with a brake push plate (20), and the bow arm (19) is configured to abut against the upper end surface of the limit limiting buffer rubber sleeve (21) for protection when it reaches the limit lower limit.

4. The bottom tray of the office chair with a buffering function according to claim 3, characterized in that: A ground support frame (14) is further fixedly arranged on the lower end surface of the lower connecting plate (15) by bolts, the length of the ground support frame (14) exceeds that of the diagonal bracing link arms (12), so as to avoid the seat from falling backward and improve the stability.

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