CN212661454U - Backrest freely adjustable and detachable folding chair - Google Patents

Abstract

The utility model relates to a technical field of folding chair provides a lean against freely adjusting and detachable folding chair, including the chair frame main part and set up two back components in the chair frame main part, the chair frame main part corresponds two back components and sets up two roating seats, back the component and include rotatory pipe box and back live-wire tube, rotatory pipe box cover is located on leaning against the live-wire tube, swivelling joint between rotatory pipe box and the roating seat, and rotatory pipe box can dismantle to set up on the roating seat. The utility model discloses a backrest assembly is through setting up swivel casing and backrest rotating tube, and wherein swivel casing rotates with the roating seat to be connected, consequently leans on the rotating tube to adjust to arbitrary angle as required according to the user, and then reaches comfortable effect, and simultaneously, swivel casing can dismantle with the roating seat and be connected, when folding chair is closed to needs, can take off whole backrest assembly, and then greatly reduced receive the height of closing back folding chair, portable uses.

Description

Backrest freely adjustable and detachable folding chair

Technical Field

The utility model relates to a technical field of folding chair especially relates to a lean against freely to adjust and detachable folding chair.

Background

The folding chair is a portable chair with a folding function, is convenient to move and saves space, has the characteristics of convenient storage and small occupied space, and is widely applied to various places such as homes, outdoors, companies and the like; however, most of the existing folding chair backrests are of fixed structures, and the following disadvantages are caused by adopting the structures:

firstly, the angle cannot be infinitely adjusted according to the self requirements of the human body, so that a consumer cannot experience the comfort of the product in the using process;

secondly, the installation of backing the structure leads to whole folding chair bulky, when closing the back, owing to back to the pipe the reason, whole folding chair highly too high, not only inconvenient carrying but also occupy too big space.

In view of the above, the present inventors have specially designed a folding chair with a freely adjustable and detachable backrest, and have resulted from this.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the backrest of the folding chair can be freely adjusted and disassembled to overcome the defects in the prior art; the technical scheme adopted is as follows:

the utility model provides a lean against freely adjusting and detachable folding chair, includes the chair frame main part and sets up two back of the body subassemblies in the chair frame main part, the chair frame main part corresponds two back of the body subassemblies and sets up two roating seats, back of the body subassembly includes rotatory pipe box and back live-wire tube, rotatory pipe box cover is located on leaning against the live-wire tube, swivelling joint between rotatory pipe box and the roating seat, and rotatory pipe box can be dismantled and set up on the roating seat.

Further, the roating seat sets up the standing groove, and its standing groove one side sets up rotatory draw-in groove, rotatory pipe box sets up spacing portion and ring groove, spacing portion is located the standing groove, rotatory draw-in groove is detained into to the ring groove, and is located the rotatory draw-in groove internal rotation.

Furthermore, the outer side wall of the rotating seat is provided with a limiting rib for limiting the rotation angle of the backrest rotating pipe, and the limiting rib is located on one side of the rotating clamping groove.

Furthermore, a through hole for the backrest rotating pipe to pass through is formed in the rotating pipe sleeve, and the backrest rotating pipe passes through the through hole and is locked on the rotating pipe sleeve through a bolt.

Furthermore, the chair frame main body comprises supporting components arranged on two sides, and a front cross component and a rear cross component which are arranged between the two supporting components.

Further, the supporting component comprises a front foot tube, a rear foot tube, a cushion tube, a seat tube supporting seat, a guide seat and a guide tube, the upper end of the front cross assembly is connected with the cushion tube through the two seat tube supporting seats, the upper end of the rear cross assembly is hinged with the two rotary seats respectively, the middle of the cushion tube is hinged with the front foot tube, the tail end of the cushion tube is hinged with the rear foot tube, the upper end of the front foot tube is hinged with the rotary seats, the guide tube is fixedly arranged below the rotary seats, one side of the guide seat is sleeved on the upper end of the rear foot tube, the other side of the guide tube is connected with the guide tube in a sliding mode, and the upper end face of the rear foot tube is abutted to the lower side of the rotary seats.

Furthermore, the support further comprises a handrail tube and a handrail support tube, the lower end of the handrail support tube is in sliding connection with the front foot tube, the upper end of the handrail support tube is in rotating connection with the handrail tube, and the other end of the handrail tube is in rotating connection with the guide seat.

Furthermore, the front cross assembly comprises two hinged front cross pipes, the rear cross assembly comprises two hinged rear cross pipes, and the lower ends of the front cross pipes and the lower ends of the rear cross pipes are respectively and rotatably connected with the front foot pipes and the rear foot pipes through L-shaped connecting pieces.

Furthermore, the lower end of the handrail supporting tube is connected with a front foot tube in a sliding mode through a sliding sleeve, and a limiting sleeve is further arranged on the front foot tube.

The utility model discloses a backrest assembly is through setting up swivel casing and backrest rotating tube, and wherein swivel casing rotates with the roating seat to be connected, consequently leans on the rotating tube to adjust to arbitrary angle as required according to the user, and then reaches comfortable effect, and simultaneously, swivel casing can dismantle with the roating seat and be connected, when folding chair is closed to needs, can take off whole backrest assembly, and then greatly reduced receive the height of closing back folding chair, portable uses.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, do not constitute an undue limitation on the invention.

Wherein:

FIG. 1 is a schematic view of a folding chair according to the present invention;

FIG. 2 is a front view of the folding chair of the present invention;

FIG. 3 is a side view of the folding chair of the present invention;

FIG. 4 is a schematic view of the installation between the rotating sleeve and the rotating seat of the folding chair of the present invention;

FIG. 5 is a schematic view of the folding removable back assembly of the present invention;

fig. 6 is a schematic view of the folding process of the folding chair of the present invention.

Description of reference numerals:

01-chair frame main body, 02-backrest assembly, 10-rotary seat, 11-placement groove, 12-rotary clamping groove, 13-limiting rib, 20-rotary pipe sleeve, 21-limiting part, 22-annular clamping groove, 23-through hole, 30-backrest rotary pipe, 40-support assembly, 41-front foot pipe, 42-rear foot pipe, 43-cushion pipe, 44-seat pipe support seat, 45-guide seat, 46-guide pipe, 47-handrail pipe, 48-handrail support pipe, 50-front cross assembly, 51-front cross pipe, 60-rear cross assembly, 61-rear cross pipe, 70-sliding sleeve and 80-limiting sleeve.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, 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, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1 to 6, a detachable folding chair with freely adjustable backrest provided by the present invention includes a chair frame main body 01 and two backrest assemblies 02 disposed on the chair frame main body 01, the chair frame main body 01 is provided with two rotary seats 10 corresponding to the two backrest assemblies 02, the backrest assemblies 02 include a rotary pipe sleeve 20 and a backrest rotary pipe, the rotary pipe sleeve 20 is sleeved on the backrest rotary pipe 30, the rotary pipe sleeve 20 is rotatably connected with the rotary seats 10, and the rotary pipe sleeve 20 is detachably disposed on the rotary seats 10; specifically, the rotary seat 10 is provided with a placing groove 11, one side of the placing groove 11 is provided with a rotary clamping groove 12, the rotary pipe sleeve 20 is provided with a limiting part 21 and a ring-shaped clamping groove 22, the limiting part 21 is positioned in the placing groove 11, and the ring-shaped clamping groove 22 is buckled into the rotary clamping groove 12 and positioned in the rotary clamping groove 12 for rotation; the setting mode of the rotary clamping groove 12 is as follows: set up a via hole in the cooperation of ring slot 22 at standing groove 11 side to set up a breach on the via hole, the width of breach need be less than ring slot 22's external diameter, because roating seat 10 adopts the plastics material, consequently under certain exogenic action, can set up rotatory pipe box 20 in or break away from on rotatory slot 12, and can guarantee that ring slot 22 rotates at rotatory slot 12 and can not fall out rotatory slot 12.

The outer side wall of the rotating seat 10 is provided with a limiting rib 13 for limiting the rotation angle of the back-to-back rotating pipe 30, the limiting rib 13 is positioned on one side of the rotating clamping groove 12, the arrangement of the limiting rib 13 enables the rotation angle of the back-to-back rotating pipe 30 to be limited to a certain extent under the condition that the rotation angle meets the condition, and the rotation angle of the back-to-back rotating pipe 30 is preferably limited to 90 degrees; the rotating pipe sleeve 20 is internally provided with a through hole 23 for the back rest rotating pipe 30 to pass through, and the back rest rotating pipe 30 passes through the through hole 23 and is locked on the rotating pipe sleeve 20 through a bolt.

The chair frame main body 01 comprises supporting components 40 arranged on two sides, a front cross component 50 and a rear cross component 60 arranged between the two supporting components 40, and the two supporting components 40 are close to or far away from each other under the action of the front cross component 50 and the rear cross component 60, so that the folding chair can be folded or unfolded; wherein the supporting component 40 includes a front leg tube 41, a rear leg tube 42, a cushion tube 43, a seat tube supporting seat 44, a guiding seat 45 and a guiding tube 46, the upper end of the front cross component 50 is connected with the cushion tube 43 through the two seat tube supporting seats 44, the upper end of the rear cross component 60 is hinged with the two rotary seats 10 respectively, the middle part of the cushion tube 43 is hinged with the front leg tube 41, the tail end of the cushion tube is hinged with the rear leg tube 42, the upper end of the front leg tube 41 is hinged with the rotary seat 10, the guiding tube 46 is fixedly arranged below the rotary seat 10, one side of the guiding seat 45 is sleeved on the upper end of the rear leg tube 42, the other side is connected with the guiding tube 46 in a sliding manner, the upper end face of the rear leg tube 42 is abutted against the lower part of the rotary.

The support also comprises a handrail tube 47 and a handrail support tube 48, the lower end of the handrail support tube 48 is connected with the front foot tube 41 in a sliding way, the upper end of the handrail support tube 48 is connected with the handrail tube 47 in a rotating way, and the other end of the handrail tube 47 is connected with the guide seat 45 in a rotating way. The front cross assembly 50 comprises two hinged front cross pipes 51, the rear cross assembly 60 comprises two hinged rear cross pipes 61, and the lower ends of the front cross pipes 51 and the rear cross pipes 61 are respectively and rotatably connected with the front foot pipes 41 and the rear foot pipes 42 through L-shaped connectors. The lower end of the handrail support pipe 48 is connected with the front foot pipe 41 in a sliding way through the sliding sleeve 70, the front foot pipe 41 is also provided with a limiting sleeve 80, and the limiting sleeve 80 is used for limiting the sliding position of the sliding sleeve 70.

To sum up, the utility model discloses a backrest subassembly is through setting up swivel casing and backrest rotating tube, and wherein swivel casing rotates with the roating seat to be connected, consequently leans against the rotating tube and can adjust to arbitrary angle according to user's needs, and then reach comfortable effect, simultaneously, swivel casing can dismantle with the roating seat and be connected, when folding chair is closed to needs, can take off whole backrest subassembly, and then greatly reduced receive the height of closing back folding chair, portable uses.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.

It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.

Claims (9)

1. The utility model provides a lean against freely to adjust and detachable folding chair, its characterized in that, includes the chair frame main part and sets up two back of the body subassemblies in the chair frame main part, the chair frame main part corresponds two back of the body subassemblies and sets up two roating seats, back of the body subassembly includes rotatory pipe box and back rotating tube, rotatory pipe box cover is located on the back rotating tube, swivelling joint between rotatory pipe box and the roating seat, and rotatory pipe box can be dismantled and set up on the roating seat.

2. The folding chair with the freely adjustable and detachable backrest as claimed in claim 1, wherein the rotary seat is provided with a placement groove, one side of the placement groove is provided with a rotary clamping groove, the rotary sleeve is provided with a limiting portion and a ring-shaped clamping groove, the limiting portion is located in the placement groove, and the ring-shaped clamping groove is buckled into the rotary clamping groove and located in the rotary clamping groove for rotation.

3. The folding chair with the freely adjustable and detachable backrest as claimed in claim 2, wherein the outer side wall of the rotary seat is provided with a limiting rib for limiting the rotation angle of the backrest rotation tube, and the limiting rib is located at one side of the rotation slot.

4. The folding chair with the freely adjustable and detachable backrest as claimed in claim 1, wherein a through hole is provided in the rotary tube sleeve for the backrest rotating tube to pass through, and the backrest rotating tube passes through the through hole and is locked on the rotary tube sleeve by a bolt.

5. The folding chair as claimed in claim 1, wherein the chair frame body comprises two support members disposed at two sides, a front cross member and a rear cross member disposed between the two support members.

6. The folding chair as claimed in claim 5, wherein the backrest is freely adjustable and detachable, the supporting member comprises a front leg, a rear leg, a seat cushion, seat cushion supports, a guide seat and a guide tube, the upper end of the front cross member is connected to the seat cushion through the two seat cushion supports, the upper end of the rear cross member is hinged to the two rotary seats, the middle of the seat cushion is hinged to the front leg, the end of the seat cushion is hinged to the rear leg, the upper end of the front leg is hinged to the rotary seat, the guide tube is fixed under the rotary seat, one side of the guide seat is sleeved on the upper end of the rear leg, the other side of the guide seat is slidably connected to the guide tube, and the upper end surface of the rear leg abuts against and is movably connected to the lower part of the rotary seat.

7. The folding chair with the freely adjustable and detachable backrest as claimed in claim 6, wherein the support further comprises a handrail tube and a handrail support tube, the lower end of the handrail support tube is slidably connected with the front leg tube, the upper end of the handrail support tube is rotatably connected with the handrail tube, and the other end of the handrail tube is rotatably connected with the guide seat.

8. The folding chair with freely adjustable and detachable backrest as claimed in claim 6, wherein the front cross assembly comprises two hinged front cross tubes, the rear cross assembly comprises two hinged rear cross tubes, and the lower ends of the front cross tubes and the rear cross tubes are respectively connected with the front leg tubes and the rear leg tubes through L-shaped connecting pieces in a rotating manner.

9. The folding chair with the freely adjustable and detachable backrest as claimed in claim 7, wherein the lower end of the armrest support tube is slidably connected with a front leg tube through a sliding sleeve, and a limit sleeve is further disposed on the front leg tube.

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