CN109674264B

CN109674264B - Chair frame

Info

Publication number: CN109674264B
Application number: CN201910077814.8A
Authority: CN
Inventors: 潘志灿; 魏超白
Original assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Current assignee: Xiamen Comfort Science and Technology Group Co Ltd; Xiamen Healthcare Electronic Co Ltd
Priority date: 2019-01-28
Filing date: 2019-01-28
Publication date: 2024-10-01
Anticipated expiration: 2039-01-28
Also published as: CN109674264A

Abstract

The invention discloses a chair frame, which realizes the switching between a sitting posture state and an inverted back state through a single push rod matched with a sleeve component and a limiting structure, and simultaneously realizes that the lower leg of a backrest is not moved to be lifted independently in the sitting posture state so as to meet the requirement of a user on diversified adjustment of the angle of the lower leg in the sitting posture state, reduce the cost of the chair frame and simplify the operation of the functions of the chair frame.

Description

Chair frame

Technical Field

The invention relates to the technical field of chairs, in particular to a chair frame.

Background

The zero-gravity household chair is characterized in that the weightlessness of the outer space is created, the person is in a completely relaxed state, along with the continuous acceleration of the life rhythm, the wish of the person for improving the life quality is continuously enhanced, and the zero-gravity chair can exactly and well release pressure for the person, so that the life quality is improved. Most of electric zero gravity seats in the prior market are of a double-push-rod structure and a single-push-rod linkage structure, the double-push-rod structure is high in cost and complex in structure, the single-push-rod linkage structure is single in function, independent movement of the lower leg cannot be achieved, and diversified demands of users are limited.

The existing zero gravity seat in the market has the switching mode between an upright state and a back-falling state, namely manual operation and electric operation, has low manual operation cost, does not accord with the continuously pursued man-machine relationship in the current society, and has an electric mode of a double-push-rod structure with independently moving lower legs and a backrest or a single-push-rod structure with linked lower legs and a backrest. The cost of the double push rod structure is relatively high, the control part is more complex, and the requirement of a user on comfortable angle adjustment of the lower leg in an upright state can not be well met by the single push rod structure with the lower leg and the backrest in linkage. In view of this, the present application has been made.

Disclosure of Invention

The invention provides a chair frame aiming at the defects of the prior art, and the single push rod structure not only realizes the switching between a sitting posture state and an inverted back state, but also realizes that the lower leg of the backrest is independently lifted in an upright state, so that the requirement of a user on diversified adjustment of the angle of the lower leg in the sitting posture state is met, the cost is reduced, and the operation is simplified.

The invention provides a chair frame, which comprises a seat frame, a lower leg assembly, a backrest frame, a push rod and a telescopic sleeve assembly, wherein the seat frame is arranged on the lower leg assembly; one end of the lower leg component 2 is pivoted on the seat frame 1; one end of the push rod is pivoted with the seat frame, the other end of the push rod is pivoted with the telescopic sleeve assembly, one end of the telescopic sleeve assembly is pivoted with the calf assembly, and the other end of the telescopic sleeve assembly is connected with the seat frame; the telescopic sleeve component is provided with a first limiting block, the front end of the seat frame is provided with a second limiting block, and the telescopic sleeve component pushes the lower leg component to move under the pushing of the push rod; the bottom of the backrest frame is rotatably pivoted on the seat frame. When the push rod pushes the telescopic sleeve component to move, the lower leg component rotates relative to the backrest frame, and when a first limiting block and a second limiting block on the telescopic sleeve component are propped against each other, the telescopic sleeve component pushes the seat frame to enable the backrest frame to rotate relative to the seat frame until the lower leg component and the front end of the seat frame are lifted at the same time, so that the chair frame is converted into a lying state from a sitting posture state.

Further, as an executable scheme, the telescopic sleeve assembly comprises a supporting rod provided with a first limiting block, a first sleeve assembly, a second sleeve and a spring; one end of the supporting rod is pivoted with the lower leg assembly, and the other end of the supporting rod is pivoted with the first end of the first sleeve assembly; the first sleeve component is sleeved outside the second sleeve and can slide outside the second sleeve; the spring is sleeved on the outer side of the second sleeve, one end of the spring is propped against the second end of the first sleeve assembly, and the other end of the spring is connected with the seat frame; the second sleeve is connected with the seat frame; the first sleeve component slides outside the second sleeve under the pushing of the push rod to drive the lower leg to move up and down.

Further, as an executable scheme, the first sleeve assembly comprises a first sleeve and a sliding sleeve, wherein the sliding sleeve is fixedly connected in the first sleeve, and the first sleeve slides outside the second sleeve through the sliding sleeve under the pushing of the push rod.

Further, as an executable scheme, the chair frame also comprises a left side plate and a right side plate, and the seat frame is pivoted with the left side plate and the right side plate through two swinging rods respectively.

By adopting the technical scheme, the invention can obtain the following technical effects: compared with the prior art, the chair frame has the advantages that through the single push rod structure, not only the switching between the sitting posture state and the back-falling state is realized, but also the independent lifting of the lower legs of the backrest under the sitting posture state is realized, so that the requirement of a user on the diversified adjustment of the angles of the lower legs under the sitting posture state is met, the cost of the chair frame is reduced, and the operation of the chair frame function is simplified.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIGS. 1 to 3 are schematic views showing the structure of a chair frame in a sitting posture state to a state in which the lower legs are lifted independently to zero gravity;

FIGS. 4-6 are schematic views of enlarged partial structures of the components of the seat frame, calf shank, push rod and sleeve assembly of FIGS. 1-3;

FIG. 7 is a schematic view of the exploded construction of the components of the seat frame, calf shank, push rod and sleeve assembly of FIGS. 4-6;

Fig. 8 to 10 are schematic views showing the structure of the chair frame of the left side projection of the chair frame of fig. 1 from sitting position to the state that the lower leg is lifted solely to zero gravity.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 10, an embodiment of the present invention provides a chair frame including a seat frame 1, a calf assembly 2, a back frame 14, a push rod 3 and a telescopic tube assembly; one end of the lower leg assembly 2 is pivotally connected to the seat frame 1. The chair frame also comprises a left side plate 11 and a right side plate 12, and two sides of the seat frame 1 are respectively pivoted with the left side plate 11 and the right side plate 12 through two swinging rods 13. One end of the push rod 3 is pivoted with the left side plate 11, the other end of the push rod is pivoted with the ear seat 4 on the telescopic sleeve component, one end of the telescopic sleeve component is pivoted with the lower leg component 2, and the other end of the telescopic sleeve component is connected with the seat frame 1; the telescopic sleeve component is provided with a first limiting block 5, the front end of the seat frame 1 is provided with a second limiting block 6, and the telescopic sleeve component pushes the lower leg component 2 to move under the pushing of the push rod 3; the bottom of the backrest 14 is rotatably pivoted to the seat frame 1.

When the push rod 3 pushes the telescopic sleeve assembly to move, the lower leg assembly 2 rotates relative to the backrest frame 14, when the first limiting block 5 and the second limiting block 6 on the telescopic sleeve assembly are propped against each other, the telescopic sleeve assembly pushes the seat frame 1, the seat frame 1 and the backrest frame 13 are driven by the swing rod 13 to be reversed relative to the left side plate 11 and the right side plate 12, the backrest frame 14 rotates relative to the seat frame 1 until the front ends of the lower leg assembly 2 and the seat frame 1 are lifted simultaneously, and the seat frame is converted into a lying state from a sitting state.

Further, as shown in fig. 5 to 7, in one example, the telescopic tube assembly includes a support rod 7 provided with a first stopper 5, a first tube assembly 8, a second tube 9, and a spring 10; the first sleeve assembly 8 comprises a first sleeve 15 and a sliding sleeve 16, the sliding sleeve 16 is fixedly connected in the first sleeve 15, and the first sleeve 15 slides outside the second sleeve 9 through the sliding sleeve 16 under the pushing of the push rod.

One end of the supporting rod 7 is pivoted with the lower leg assembly 2, and the other end is pivoted with the first end of the first sleeve 8; the first sleeve assembly 8 is sleeved outside the second sleeve 9 and can slide outside the second sleeve 9; the spring 10 is sleeved outside the second sleeve 9, one end of the spring is propped against the second end of the first sleeve assembly 8, and the other end of the spring is connected with the seat frame 1; the second sleeve 9 is connected to the mount 1. Specifically, in order that the first sleeve assembly 8 can slide outside the second sleeve 9, the diameter of the first sleeve assembly 8 should be larger than that of the second sleeve 9, and the telescopic function is realized through the cooperation of the first sleeve assembly, the second sleeve and the spring, so that the lower leg assembly can be lifted and lowered independently. In order to achieve the aim of controlling the lower leg assembly to perform lifting movement and achieve a zero gravity state, the support rod 7 is provided with the first limiting block 5, and when the support rod is propped against the second limiting block 6 arranged at the front end of the seat frame 1, the sleeve assembly is pushed by the push rod 3 to achieve linkage of the lower leg assembly 2 and the seat frame 1, so that the chair frame is converted into the zero gravity state from a sitting posture state.

Further, as shown in fig. 1 to 3, in order to cooperate with the chair frame to achieve the zero gravity state, the chair frame further comprises a left side plate 11 and a right side plate 12, and two sides of the seat frame 1 are respectively pivoted with the left side plate 11 and the right side plate 12 through two swing rods 13. When the chair frame is adjusted from a sitting posture state to a zero gravity state, the seat frame 1 is driven by the swing rod 13 to be matched with a roller or a rolling shaft structure (not shown in the figure) at the bottom of the backrest frame 14 to be reversely carried by the backrest frame 14 relative to the left side plate 11 and the right side plate 12, so that the zero gravity state is realized. In order to more clearly understand the motion state of the chair frame according to the technical scheme of the invention, a schematic view of the chair frame from a sitting posture state to a state of lifting the lower leg to a zero gravity state is provided from the view of the left side surface of the chair frame, and particularly, reference is made to fig. 8 to 10.

That is, the technical scheme of the embodiment of the invention enables the single push rod to realize a movement mode that the lower leg is lifted back to back firstly through structural adjustment, the lower leg is lifted independently under the cooperation of the push rod and the sleeve assembly, and the limit structure is used for limiting the space limit of asynchronous movement, so that the action switching between independent movement and synchronous linkage is achieved, and in the independent movement, the lower leg can be regulated to lift the angle independently, so that the comfort requirements of different users under different use situations can be met. In the switching process of the seat from the sitting posture state to the zero gravity mode, the lower leg is lifted to a limited position independently and then moves to the zero gravity state synchronously with the seat frame; in the process of switching the seat back to the sitting posture state from the zero gravity mode, the lower leg and the seat frame are synchronously reset, and the lower leg is independently and continuously reset to a limited position after the seat frame is reset, so that the single push rod can realize the synchronization and separation of the actions of the lower leg and the seat frame.

The chair frame not only realizes the switching between the sitting posture state and the back-falling state, but also realizes that the lower leg of the backrest is independently lifted under the sitting posture state through the single push rod structure so as to meet the requirement of the user on diversified adjustment of the angle of the lower leg under the sitting posture state, reduce the cost of the chair frame and simplify the operation of the chair frame function.

While preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The chair frame is characterized by comprising a seat frame, a lower leg assembly, a backrest frame, a push rod and a telescopic sleeve assembly; one end of the lower leg component is pivoted with the seat frame; the seat frame also comprises a left side plate and a right side plate, and the seat frame is pivoted with the left side plate and the right side plate through two swing rods respectively; one end of the push rod is pivoted with the left side plate, the other end of the push rod is pivoted with the telescopic sleeve assembly, one end of the telescopic sleeve assembly is pivoted with the calf assembly, and the other end of the telescopic sleeve assembly is connected with the seat frame; the telescopic sleeve component is provided with a first limiting block, the front end of the seat frame is provided with a second limiting block, and the telescopic sleeve component pushes the lower leg component to move under the pushing of the push rod; the bottom of the backrest frame is rotatably pivoted on the seat frame; when the push rod pushes the telescopic sleeve component to move, the lower leg component rotates relative to the backrest frame, when a first limiting block and a second limiting block on the telescopic sleeve component are propped against each other, the telescopic sleeve component pushes the seat frame, the seat frame and the backrest frame are reversely carried by the left side plate and the right side plate together under the drive of the swing rod, and the front ends of the lower leg component and the seat frame are simultaneously lifted, so that the chair frame is converted into a lying state from a sitting state.

2. The chair rack according to claim 1, wherein the telescoping tube assembly comprises a support bar provided with a first stopper, a first tube assembly, a second tube and a spring; one end of the supporting rod is pivoted with the lower leg assembly, and the other end of the supporting rod is pivoted with the first end of the first sleeve; the first sleeve component is sleeved outside the second sleeve and can slide outside the second sleeve; the spring is sleeved on the outer side of the second sleeve, one end of the spring is propped against the second end of the first sleeve assembly, and the other end of the spring is connected with the seat frame; the second sleeve is connected with the seat frame; the first sleeve component slides outside the second sleeve under the pushing of the push rod to drive the lower leg to move up and down.

3. The chair frame according to claim 2, wherein said first sleeve assembly comprises a first sleeve and a slide sleeve, said slide sleeve being fixedly secured within said first sleeve, said first sleeve being slid over said second sleeve by said slide sleeve under the urging of said push rod.