Cushion forward inclination adjusting mechanism of seat

Abstract

The utility model discloses a forward leaning adjusting mechanism for a seat cushion of a seat. The forward leaning adjusting mechanism comprises a seat shell, an upper seat, a rotating shaft and an adjusting assembly, and an arc-shaped groove and a fixed point are arranged on the bottom wall of a circular groove in the inner side of the connecting part at the rear end. In the adjusting assembly, a driving shaft is in sliding fit with an arc-shaped groove and eccentrically and fixedly connected with a driving block, the driving block is composed of a thick cylinder and a thin cylinder, a steel ball groove is formed in the side face of the thin cylinder, an elastic piece is connected with a base shell and a ball, and the ball is pressed in the steel ball groove under elastic pressure. According to the mechanism, forward inclination adjustment of the cushion is achieved by rotating the driving shaft, the diversified sitting posture requirements of a user can be met, the sitting experience is greatly improved, and human body fatigue is effectively relieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of seat, concretely is a seat cushion reclining adjustment mechanism. BACKGROUND

[0002] In modern seat design, in order to meet the diversified sitting posture needs of users, improve the riding comfort, the adjustment function of seat cushion becomes increasingly important. Comfortable sitting posture can effectively reduce human fatigue, especially when riding for a long time, suitable seat cushion angle adjustment can better fit the human spine curve and provide good support for the body.

[0003] However, most of the seat cushions on the market have obvious defects in design, and cannot realize the reclining adjustment function. The angle of the traditional seat cushion is fixed, and the user can only be passive adaptation, and it is difficult to obtain the best support by adjusting the angle of the seat cushion regardless of the body posture requirement.

[0004] Therefore, the application provides a seat cushion reclining adjustment mechanism for the seat, which provides the reclining function for the seat cushion. UTILITY MODEL CONTENTS

[0005] The utility model provides a seat cushion reclining adjustment mechanism for the seat in view of the deficiency in the background art.

[0006] The technical scheme adopted by the utility model is: a seat cushion reclining adjustment mechanism for the seat, which comprises a seat shell, an upper seat, a rotating shaft and an adjustment assembly, the rotating shaft is fixed at the front end of the seat shell, the long groove on the upper seat is movably connected with the rotating shaft, the two sides of the end of the seat shell away from the rotating shaft are provided with connecting parts, the inner side of the connecting part is provided with a circular groove, an arc-shaped groove is arranged on the bottom wall of the circular groove, the middle part of the arc-shaped groove is protruded to form fixed point one and fixed point two at the two ends of the arc-shaped groove.

[0007] The adjustment assembly comprises a driving shaft slidably connected with the arc-shaped groove, a driving block eccentrically fixed with the driving shaft, an elastic member connected with the seat shell and a ball connected with the elastic member, and the driving shaft is rotatably connected with the upper seat.

[0008] The driving block comprises a thick cylinder and a thin cylinder, the thick cylinder and the thin cylinder are coaxially arranged, and the thick cylinder is embedded in the circular groove and rotatably connected with the circular groove, and the side surface of the thin cylinder is provided with a steel ball groove one and a steel ball groove two.

[0009] The ball is pressed in the steel ball groove one or the steel ball groove two under the elastic pressure of the elastic member.

[0010] Further, a settlement cavity is arranged in the seat shell, the two sides of the bottom of the upper seat are provided with connecting steps matched with the settlement cavity, the front end of the connecting step is provided with the long groove, and the rear end of the connecting step is provided with a rotating hole rotatably connected with the driving shaft.

[0011] Further, the driving shaft section is an equilateral hexagonal structure, the rough cylinder is provided with an equilateral hexagonal eccentric hole, and the driving shaft is connected with the eccentric hole.

[0012] Further, the driving shaft and the rotating hole are rotationally connected through a shaft sleeve.

[0013] Further, the driving shaft extends from two ends of the seat shell, and handles are fixed to two ends of the driving shaft.

[0014] Further, one end of the handle is provided with a hexagonal hole matched with the driving shaft, and the other end is provided with a horn opening, and a plurality of notches are arranged on the outer wall of the horn opening at intervals.

[0015] Further, the thin cylinder is provided with a clearance groove on one side of the eccentric hole for the driving shaft.

[0016] The beneficial effects of the utility model are: the application can realize the forward inclination adjustment of the cushion by rotating the driving shaft, the user can flexibly adjust the angle of the cushion according to the own sitting posture demand, and the condition that the traditional fixed-angle cushion cannot provide the best support is effectively improved. Whether it is long-time desk work or driving process, the suitable forward inclination angle can make the body naturally fit the seat, greatly improve the riding experience, effectively reduce the human body fatigue, and improve the work efficiency.

[0017] In addition to the purposes, features and advantages described above, the utility model has other purposes, features and advantages. The utility model will be further described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the utility model.

[0019] Figure 2 It is a structural schematic view of the seat shell.

[0020] Figure 3 It is an explosion schematic view of the utility model.

[0021] Figure 4 It is Figure 3 It is an enlarged schematic view of A in the middle.

[0022] Figure 5 It is a structural schematic view of the handle.

[0023] Figure 6 It is a structural schematic view of the driving block.

[0024] Figure 7 It is a structural schematic view of the upper seat. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.

[0026] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications also change accordingly.

[0027] The utility model provides a seat cushion forward inclination adjusting mechanism.

[0028] In the embodiment, referring to Figures 1-7 The seat cushion forward inclination adjusting mechanism comprises a seat shell 1, an upper seat 2, a rotating shaft 3 and an adjusting assembly. The rotating shaft 3 is fixed at the front end of the seat shell. The long groove 4 on the upper seat is movably matched with the rotating shaft. The two sides of the end of the seat shell away from the rotating shaft are provided with connecting parts 5. The inner side of the connecting part 5 is provided with a circular groove 6. The bottom wall of the circular groove 6 is provided with an arc-shaped groove 7. The middle part of the arc-shaped groove 7 is provided with a protrusion 8, which makes the two ends of the arc-shaped groove form a fixed point one 9 and a fixed point two 10.

[0029] The adjusting assembly comprises a driving shaft 11 slidably matched with the arc-shaped groove, a driving block 12 eccentrically fixedly connected with the driving shaft 11, an elastic member 13 connected with the seat shell and a ball 14 connected with the elastic member 13. The driving shaft is rotatably connected with the upper seat.

[0030] The driving block comprises a thick cylinder 15 and a thin cylinder 16. The thick cylinder 15 and the thin cylinder 16 are coaxially arranged. The thick cylinder is embedded in the circular groove and rotatably matched with the circular groove. The side surface of the thin cylinder is provided with a steel ball groove one 17 and a steel ball groove two 18.

[0031] The ball is pressed in the steel ball groove one or the steel ball groove two under the elastic pressure of the elastic member.

[0032] In the above technical solution, the rotating shaft is fixed at the front end of the seat shell, and the long groove on the upper seat is movably matched with the rotating shaft, so that the upper seat can rotate around the rotating shaft. In the adjusting assembly, the driving shaft is slidably matched with the arc-shaped groove, and the driving block is eccentrically fixed on the driving shaft. When the driving shaft rotates, the driving block rotates. The elastic member connects the seat shell and the ball. The ball is pressed in the steel ball groove one or the steel ball groove two on the side surface of the thin cylinder of the driving block under the elastic pressure. By rotating the driving shaft, the position of the driving block changes, and the ball switches positions in different steel ball grooves.

[0033] In specific use, the steel ball is slid from the steel ball groove one to the steel ball groove two by rotating the driving shaft to realize the adjustment of the forward inclination. In this process, the driving shaft is also moved from the fixed point one to the fixed point two. The fixed points one and two formed by the arc-shaped groove increase the stability of the two use states.

[0034] Specifically, the seat shell is provided with a settling cavity 19, the upper seat bottom is provided with a connecting step 20 on both sides and matched with the settling cavity 19, the front end of the connecting step 20 is provided with the long groove, and the rear end of the connecting step is provided with a rotating hole 21 connected with the driving shaft.

[0035] In this embodiment, the seat shell is provided with a settling cavity, and the connecting steps on both sides of the upper seat bottom are matched with the settling cavity. The long groove at the front end of the connecting step is matched with the rotating shaft to realize rotation, and the rear end rotating hole is used for rotating connection with the driving shaft. The matching of the settling cavity and the connecting step provides a stable structural basis for the installation and adjustment of the upper seat.

[0036] Specifically, the driving shaft is in an equilateral hexagonal structure, an eccentric hole 22 in an equilateral hexagonal structure is arranged on the rough cylinder, and the driving shaft is connected with the eccentric hole.

[0037] In this embodiment, the driving shaft is in an equilateral hexagonal structure, and the equilateral hexagonal eccentric hole on the rough cylinder is connected with the driving shaft, which ensures that the driving shaft can accurately drive the eccentric rotation of the driving block when rotating, thereby realizing accurate control of the adjusting assembly.

[0038] Specifically, the driving shaft and the rotating hole are rotatably connected through a shaft sleeve 23.

[0039] In this embodiment, the driving shaft and the rotating hole are rotatably connected through the shaft sleeve, the shaft sleeve plays a role of reducing friction and protecting the driving shaft and the rotating hole, and the rotation of the driving shaft in the rotating hole is more smooth.

[0040] Specifically, the driving shaft extends from both ends of the seat shell, and handles 24 are fixed at both ends of the driving shaft.

[0041] In this embodiment, the driving shaft extends from both ends of the seat shell and is fixed with the handles. The user rotates the handles to drive the driving shaft to rotate, thereby realizing the adjustment of the angle of the upper seat. Handles are arranged at both ends, which facilitates the operation of the user

[0042] Specifically, one end of the handle is provided with a hexagonal hole 25 matched with the driving shaft, the other end is provided with a trumpet mouth 26, and a plurality of notches 27 are arranged on the outer wall of the trumpet mouth 26 at intervals.

[0043] In the embodiment, the hexagonal hole at one end of the handle is connected with the driving shaft to ensure power transmission. The trumpet mouth at the other end and the notches 27 arranged on the outer wall at intervals increase the friction between the handle and the user's hand, facilitating the user to grasp and apply force.

[0044] Specifically, the thin cylinder has a clearance slot 28 on one side of the eccentric hole for the driving shaft.

[0045] In the embodiment, the thin cylinder has a clearance slot on one side of the eccentric hole for the driving shaft to pass through.

[0046] Each skilled person should know that although the utility model has been described according to the above specific embodiments, the utility model idea is not limited to this utility model, and any modification using the utility model idea will be included in the patent protection range.

Claims

1. A seat cushion recline adjustment mechanism for a seat, characterised in that: The utility model relates to a seat shell, upper seat, pivot and adjusting assembly, the pivot is fixed in the front end of seat shell, the long groove on the upper seat is with pivot activity cooperation, the both sides of the end of seat shell away from pivot are provided with connecting part, the inboard of connecting part is provided with round groove, the bottom wall of round groove is provided with arc slot, the middle part of arc slot is protruding and makes both ends of arc slot form fixed point one and fixed point two; The adjusting assembly includes a drive shaft that slides with the arc slot, a drive block that is eccentrically fixed to the drive shaft, an elastic member that is connected to the seat shell, and a ball that is connected to the elastic member, and the drive shaft is rotationally connected to the upper seat; The drive block includes a thick cylinder and a thin cylinder, the thick cylinder and the thin cylinder are axially arranged, and the thick cylinder is embedded in the round groove and rotationally connected thereto, and the side surface of the thin cylinder is provided with a steel ball groove one and a steel ball groove two; The ball is pressed in the steel ball groove one or the steel ball groove two under the elastic pressure of the elastic member.

2. The seat cushion recline mechanism of claim 1, wherein: The seat shell is provided with a settling cavity, the bottom of the upper seat is provided with a connecting step that is adapted to the settling cavity, the front end of the connecting step is provided with the long groove, and the rear end of the connecting step is provided with a rotating hole that is rotationally connected to the drive shaft.

3. The seat cushion recline mechanism of claim 1, wherein: The cross section of the drive shaft is an equilateral hexagonal structure, the thick cylinder is provided with an eccentric hole in the form of an equilateral hexagon, and the drive shaft is connected to the eccentric hole.

4. The seat cushion recline mechanism of claim 2, wherein: The drive shaft and the rotating hole are rotationally connected through a shaft sleeve.

5. The seat cushion recline mechanism of claim 1, wherein: The drive shaft extends from both ends of the seat shell, and the two ends of the drive shaft are fixed with handles.

6. A seat cushion recline mechanism according to claim 5, characterised in that: One end of the handle is provided with a hexagonal hole that is adapted to the drive shaft, and the other end is provided with a trumpet mouth, and the outer wall of the trumpet mouth is provided with a plurality of grooves at intervals.

7. The seat cushion recline mechanism of claim 3, wherein: The thin cylinder is provided with a clearance groove on one side of the eccentric hole for accommodating the drive shaft.

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