WO2023060755A1

WO2023060755A1 - Folding chair

Info

Publication number: WO2023060755A1
Application number: PCT/CN2021/138859
Authority: WO
Inventors: 贾情深
Original assignee: 永康市青沐工贸有限公司
Priority date: 2021-10-14
Filing date: 2021-12-16
Publication date: 2023-04-20
Also published as: CN216256279U

Abstract

A folding chair, comprising back rods (1), a grip handle (2), upper pull rods (3) and telescopic members (4), wherein one end of each upper pull rod (3) is rotatably arranged at the upper portion of each back rod (1), and the other end of each upper pull rod is rotatably arranged on the grip handle (2); one end of each telescopic member (4) is rotatably arranged on the grip handle (2), and the other end of each telescopic member is rotatably arranged at the lower portion of each back rod (1); two back rods (1), two upper pull rods (3) and two telescopic members (4) are symmetrically provided on the left and right sides of the central line of the grip handle (2); the left back rod (1) and the right back rod (1) form the back of the folding chair; the telescopic members (4) comprise telescopic rods (41) and telescopic sleeves (42); and when the folding chair is in an unfolded state, the telescopic members (4) are at the shortest length. In the folding chair, the back of the folding chair can be effectively unfolded and folded; and when the folding chair is in the unfolded state, each movable component is in a protected state and is not disturbed by the external environment, such that the overall structure is more stable, and the failure rate is reduced.

Description

a folding chair

technical field

The utility model relates to the technical field of folding chairs, in particular to a folding chair.

Background technique

The Chinese Utility Model Patent No. 202020867362.1 discloses a folding chair. The outer ends of the pull-down rods of the left and right folding mechanisms are respectively slidably connected to the back rod units of the left and right chair frames. The back rod units are provided with sliding rods. The first sliding sleeve is arranged on the pull-down rod, and the first sliding sleeve is slidably arranged on the sliding rod. However, in reality, folding chairs are generally used outdoors, and the use environment is very complicated, such as being used in muddy ground or grass. Sand and sand are easily attached to the slider, or weeds are stuck on the slider. When the slider is closed after use, the slider and the slider get stuck and cannot be folded effectively, resulting in the failure of the entire folding chair to be folded. combine.

technical problem

The utility model provides a folding chair aiming at the deficiencies in the prior art.

technical solution

In order to solve the above-mentioned technical problems, the utility model is solved by the following technical solutions: a folding chair, including a back bar, a handle, an upper pull rod and a telescopic piece, one end of the upper pull rod is rotatably arranged on the upper part of the back bar, and the other One end is rotatably set on the hand handle, one end of the telescopic element is rotatably set on the hand handle, and the other end is rotatably set on the lower part of the back bar, and the back bar, pull-up bar, and telescopic piece are symmetrically arranged on the center line of the hand handle There are 2 groups, the left and right two back rods form the back of the folding chair. The telescopic parts include telescopic rods and telescopic sleeves. When the folding chair is opened, the telescopic parts are at the shortest length, and the angle formed by the left and right two 180 degrees, the angle formed by the top of the left and right pull-up rods is less than 180 degrees.

Its beneficial effect is that pushing the handle downwards can drive the end connected to the handle to slide downwards, so that the 2 heel bars can be pushed outward, thereby opening the back of the folding chair. When fully opened, The telescopic part is in the shortest state, and at this moment, the pull-up rod and the telescopic part touch against each other on the handle, thereby forming a stable back.

In the above solution , preferably, an upper limit is set at the rotation position of the upper pull rod of the handle, and the side wall of the upper pull rod touches the upper limit when the folding chair is opened.

The beneficial effect is that the pull-up rod can be better limited in the open state.

In the above solution, preferably, lifting the handle upwards can drive the angle formed by the two pull-up rods to be greater than 180 degrees and less than 360 degrees, and to elongate the telescopic member.

In the above solution, preferably, the handle is provided with a handle for easy carrying.

The beneficial effect is that the person can better lift and depress the handle.

In the above solution, preferably, the telescopic sleeve is a damping sleeve.

Its intentional effect is to optimize the user's use experience, and at the same time reduce the relative flexibility between the telescopic rod and the telescopic sleeve. There is a certain restriction between the telescopic sleeve and the telescopic rod. When the folding chair is shaken from side to side, The telescopic sleeve and the telescopic rod expand and contract slowly, so as to overcome the force of the folding chair being left and right, reduce the degree of deformation of the folding chair, and enhance the stability of the folding chair.

In the above solution, preferably, when the folding chair is opened, the telescopic part of the telescopic rod is completely inside the telescopic sleeve.

Its intentional effect is that, in the opened state, the telescopic element can not be disturbed by the external environment, making it more stable.

Beneficial effect

The beneficial effects of the utility model are: the utility model discloses a folding chair, which can effectively open and close the back of the folding chair, and in the opened state, all movable parts are in a protected state, free from the intrusion of the external environment, Make the overall structure more stable and reduce the failure rate.

Description of drawings

Fig. 1 is the utility model schematic diagram.

Fig. 2 is a schematic diagram of opening the back of the utility model.

Fig. 3 is a schematic diagram of the handle of the utility model.

Fig. 4 is a schematic diagram of the folding of the back of the utility model.

Embodiments of the present invention

The utility model will be further described in detail below in conjunction with the accompanying drawings and specific embodiments: Referring to Fig. 1-Fig. 1 is provided with an upper rotation shaft 11 and a lower rotation shaft 12, the handle 2 is provided with an upper limit 21, a handle 22, an upper rotation hole 23 and a lower rotation hole 24, and one end of the upper pull rod 3 is rotated and arranged on the back On the upper rotating shaft 11 of the rod 1, the other end is rotated and arranged on the upper rotating hole 23 of the handle 2, and one end of the telescopic member 4 is rotated and arranged on the lower rotating shaft 12 of the back rod 1, and the other end is rotated and arranged on the handle. On the lower turning hole 24 of the handle 2, a back bar 1 is respectively arranged on the left and right sides of the folding chair, and one of the upper pull rod 3 and the telescopic member 4 are also arranged on the left and right, and are arranged symmetrically on the left and right sides of the handle 2 centerline.

The telescopic member 4 includes a telescopic rod 41 and a telescopic sleeve 42, the telescopic rod 41 is slidably arranged in the telescopic sleeve 42, wherein the telescopic sleeve 42 is designed as a damping telescopic sleeve.

Among them, the design of the damping sleeve is to optimize the user experience, and at the same time reduce the relative flexibility between the telescopic rod 41 and the telescopic sleeve 42. There is a certain restriction between the telescopic sleeve 42 and the telescopic rod 41. When being shaken left and right, the telescopic sleeve 42 and the telescopic rod 41 will expand and contract slowly, thereby overcoming the force of the folding chair being left and right, reducing the degree of deformation of the folding chair, and enhancing the stability of the folding chair.

When the folding chair needs to be opened, the hand grasps the handle 22 on the handle 2 and presses down, so that the handle 2 moves downward, and one end of the upper pull rod 3 and the telescopic member 4 also follows the handle 2 downward. Move, so that the back bar 1 is pushed away to both sides, thereby opening the back of the folding chair. Finally, in the opened state, the sides of the two pull-up rods 3 touch the upper limit 21 on the handle 2, and the two pull-up rods The angle formed above 3 is less than 180 degrees. At this time, the telescopic member 4 is at the shortest length, and the telescopic rod 41 and the telescopic sleeve 42 are in contact with each other, so they cannot be shortened any further, and the telescopic part of the telescopic rod 41 is completely in the telescopic sleeve 42. Inside, this time is the use state of the folding chair. At this time, the telescopic part of the telescopic rod 41 is completely in the telescopic sleeve 42, and external environmental factors can not affect the telescopic part 4, so that it can work normally and stably.

Wherein during the opening process, one end of the pull-up rod 3 slides down along with the handle 2, and the finally formed angle is less than 180 degrees. At this time, the length formed by the two pull-up rods 3 is the longest state. When passing through this point, the downward sliding distance is shortened. The displacement is limited so that the handle 2 can no longer slide downwards, and now the whole back is in a stable state.

When the folding chair needs to be folded, the hand grasps the handle 22 on the handle 2 and lifts it upwards, so that the handle 2 moves upwards, and one end of the pull-up rod 3 and the telescopic member 4 also moves upwards along with the handle 2, and the upper The pull rod 3 drives the back rod 1 to draw inward, and the telescopic rod 41 on the telescopic member 4 begins to stretch. Finally, when it is fully retracted, the angle formed above the two upper pull rods 3 is greater than 180 degrees and less than 360 degrees. 4 is in the longest state and cannot be stretched any more, and then the folding chair is stored for the next use.

The above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be applied to the foregoing embodiments The technical solutions described in the examples are modified, or some of the technical features are equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

The utility model discloses a back folding device of a folding chair, which comprises a back rod, a hand handle, an upper pull rod and a telescopic piece, one end of the upper pull rod is rotatably arranged on the upper part of the back rod, and the other end is rotatably arranged on the hand handle Above, one end of the telescopic element is rotatably arranged on the hand handle, and the other end is rotatably arranged on the lower part of the back bar. The back bar, upper pull rod, and telescopic element are symmetrically arranged in two groups on the left and right sides of the center line of the hand handle, with two left and right The back bar forms the back of the folding chair, and the telescopic member includes a telescopic rod and a telescopic sleeve. When the folding chair is opened, the telescopic member is at the shortest length. The utility model discloses a folding chair, which can effectively open and close the back of the folding chair, and in the opened state, all movable parts are in a protected state, free from the intrusion of the external environment, so that the overall structure is more stable and failures are reduced. Rate.

Claims

A folding chair, characterized in that it includes a back bar (1), a handle (2), an upper pull rod (3) and a telescopic piece (4), and one end of the upper pull rod (3) is rotatably arranged on the back bar (1 ), the other end is rotatably set on the handle (2), one end of the telescopic member (4) is rotatably set on the hand handle (2), and the other end is rotatably set on the lower part of the back bar (1), so There are 2 groups of back rods (1), pull-up rods (3), and telescopic parts (4) symmetrically arranged on the left and right sides of the handle (2), and two left and right back rods (1) form the back of the folding chair;

The telescopic member (4) includes a telescopic rod (41) and a telescopic sleeve (42). When the folding chair is opened, the telescopic member (4) is at the shortest length, and the angle formed by the two left and right telescopic members (4) is less than 180 degrees, the angle formed above the left and right upper pull rods (3) is less than 180 degrees.
A folding chair according to claim 1, characterized in that: an upper limit (21) is set at the rotation position of the pull-up rod (3) of the handle (2), when the foldable chair is opened, the pull-up rod (3) The side wall touches on the upper limit (21).
A folding chair according to claim 2, characterized in that: lifting the handle (2) upwards can drive the angle formed by the two pull-up rods (3) to be greater than 180 degrees and less than 360 degrees, and the telescopic member ( 4).
The folding chair according to claim 1, characterized in that: the handle (2) is provided with a handle (22) for easy carrying.
A folding chair according to claim 1, characterized in that: the telescopic sleeve (42) is a damping sleeve.
A folding chair according to claim 1, characterized in that, when the folding chair is opened, the telescopic part of the telescopic rod (41) is completely inside the telescopic sleeve (42).