CN210204056U - Simple folding seat - Google Patents

Abstract

The utility model relates to the field of seats, in particular to a simple folding seat, which comprises a seat and a back; the lower end part of the chair back is connected to the chair seat through a bracket; the lower end part of the chair back is hinged with a bracket above the chair seat, and the bracket is provided with a locking component for limiting and locking the chair back; when the locking assembly is in an unlocking state, the chair back can be forwards overturned and covered on the chair seat by taking the hinge point as the center. On one hand, the seat reduces the space occupied by the seat, improves the single transportation quantity, reduces the cost of enterprises and is convenient for workers to carry; on the other hand, when a user purchases the boxed seat, the chair back and the seat are connected well, the user only needs to open the chair back relative to the seat and fix the chair back through the locking assembly, the whole assembly is very convenient, and the user does not need to complete the assembly between the two large parts of the chair back and the seat.

Description

Simple folding seat

Technical Field

The utility model relates to a seat field especially relates to a simple and easy folding seat chair.

Background

The swivel chair is one of computer chairs (electronic contest chairs) and office chairs, and is a chair with a rotatable sitting part. The swivel chair generally includes portable base (generally being five claw bases), cylinder, seat support and back of the chair, wherein is provided with the gyro wheel on the portable base, can realize the removal on the level land through the gyro wheel, and the seat support passes through the cylinder setting on portable base, can realize through the cylinder setting that the seat support goes up and down and rotate the function. In addition, the backrest is generally disposed on the seat through a tilting mechanism, and the backrest can be tilted backward relative to the seat through the tilting mechanism, so as to adjust the sitting angle. The mechanical lifting swivel chair consists of eight parts, namely a backrest, a seat, armrests, an armrest frame, a supporting plate frame, a lifter, hinge hinges and trundles, wherein the armrests and the hinge hinges form an angle adjusting device, so that the armrests can be extended or shortened, the backrest and the seat are movably connected through the hinge hinges, the lifting of the swivel chair can be adjusted by the lifter, the opening angle of the swivel chair (86-150 degrees) can be adjusted, and the requirements can be met by relative displacement of a press button and the angle adjusting device; the proposal can be lifted and laid, has one additional function compared with the common swivel chair, and is convenient to operate.

The existing swivel chair can be divided into a movable base, a cylinder, a chair seat and a chair back by considering the optimization of a transportation space in the production process, and further the movable base is divided into an intermediate body, five support legs arranged on the intermediate body and rollers respectively arranged on the support legs. The scheme separates the swivel chair in a modularized way, is favorable for optimizing the utilization of the box-packed space of the swivel chair module, reduces the box-packed volume of the swivel chair as much as possible, and reduces the transportation cost. The utility model discloses a but describe a swivel chair of quick assembly disassembly as in the chinese utility model patent publication text of publication number "CN 201308299Y", the chair foot support frame in this swivel chair and handrail support frame all through the spacing bolt subassembly of elasticity removable install respectively at back of the chair pipe sleeve seat and handrail pipe sleeve seat, its simple structure, the dismouting is easy, the transportation is convenient, and can make up the replacement with different figurative chair foot support frames and handrail support frame, improve the product and use the flexibility. However, the technical scheme of the swivel chair has the following problems: the existing assembly schemes mostly consider the product transportation requirements of manufacturers, but rarely consider the product assembly convenience of users, and even though the assembly structure of the chair back and the chair seat is simplified in the prior art, the user still has many inconveniences during assembly due to the relatively large size of the chair seat and the chair back, such as the requirement of simultaneously lifting the chair back, aligning, positioning and fixing the chair back.

In addition, one of the existing swivel chairs is mainly used for a user to ride in an electronic competition. The design of the electronic competition chair accords with human engineering, the operation and the experience of a user are convenient, and the comfort level of the user can be ensured due to the fact that the energy of the user is required to be highly input and the sitting posture is kept for a long time in part of games. However, the two sides of the chair back and the chair seat of the electronic competition chair are both provided with side wings (side baffles), which obviously increases the space required by the box-packed transportation of the electronic competition chair, and the existing method does not have a method for reasonably reducing the space required by the box-packed transportation of the electronic competition chair.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a simple folding seat, which on one hand reduces the space occupied by the seat, increases the number of single transportation, reduces the cost of enterprises, and facilitates the transportation of workers; on the other hand, when a user purchases the boxed seat, the chair back and the seat are connected well, the user only needs to open the chair back relative to the seat and fix the chair back through the locking assembly, the whole assembly is very convenient, and the user does not need to complete the assembly between the two large parts of the chair back and the seat.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a simple folding chair comprises a chair seat and a chair back; the lower end part of the chair back is connected to the chair seat through a bracket; the method is characterized in that: the lower end part of the chair back is hinged with a bracket above the chair seat, and the bracket is provided with a locking component for limiting and locking the chair back; when the locking assembly is in an unlocking state, the chair back can be forwards overturned and covered on the chair seat by taking the hinge point as the center. It should be noted that the locking assembly referred to herein is only limited to lock the backrest, and other moving structures are not limited to the hinge point of the backrest and the bracket, and the backrest can still move relative to the seat through the reclining mechanism when the locking assembly is in the locked state, as described below.

Preferably, the upper end surface of the seat is fitted to the front end surface of the seat back, and when the seat back is turned over and covers the seat, the uneven portion of the upper end surface of the seat is fitted complementarily to the uneven portion of the front end surface of the seat back.

Preferably, the chair seat comprises a chair seat body and chair seat side baffles arranged on two sides of the chair seat body; the chair back comprises a chair back main body, and a waist side stop and a shoulder side stop which are arranged on two sides of the chair back main body; the shoulder side baffle is positioned above the waist side baffle, and a notch is formed between the shoulder side baffle and the waist side baffle; when the chair back is overturned and covered on the chair seat, the chair seat side baffle is positioned in the notch between the shoulder side baffle and the waist side baffle. In the above technical solution, on the basis that the seat back can be covered on the seat back in a forward-turning manner, in order to further reduce the stacking thickness of the seat back and the seat back, the concave-convex portion of the upper end surface of the seat back and the concave-convex portion of the front end surface of the seat back are complementarily attached. When the chair is the electronic contest chair, the chair seat side baffle on the chair seat is positioned in the notch between the shoulder side baffle and the waist side baffle on the chair back, thereby not only meeting the requirement of ergonomic modeling, but also ensuring the coincidence after superposition, and effectively improving the utilization rate of the packaging space.

Preferably, the length of the chair back main body is greater than that of the chair seat main body, when the chair back is overturned to cover the chair seat, the headrest portion of the chair back main body is positioned at the front side of the chair seat main body, and an accommodating area is formed below the headrest portion; in the scheme, the chair back can be forwards turned to cover the chair seat to realize the box-packed state, further on the chair back main body, the chair back is turned to cover the chair seat, and the object placing area formed below the headrest part of the chair back main body is used for placing the air rod and the base, so that the scheme can be arranged into an object placing layout scheme in a rectangular space after the chair is subjected to modular decomposition, and the packaging space utilization rate is effectively improved.

Preferably, the locking assembly comprises a locking pin movably arranged on the bracket and a locking spring acting on the locking pin. In the technical scheme, a locking spring in the locking assembly acts on a locking pin to provide reset force for the locking pin, and the locking pin is used for locking the chair back and limiting the movement of the chair back.

Preferably, the lower end part of the chair back is connected to the chair seat through a tilting mechanism; the tilting mechanism comprises a base fixed on the side wall of the chair seat, a bracket hinged with the base, a torsional spring for providing resetting force for the bracket, and a handle limiting component for limiting the rotation of the bracket; the center end of the torsion spring is fixed on a hinged point of the support and the base, and the movable end of the torsion spring is connected to the support. In the traditional scheme, the tilting mechanism is generally integrated in a table and chair tray below a chair seat, the structure is complex, the cost is high, and the resetting flexibility of the tilting mechanism is poor. In the scheme, the independently arranged tilting mechanism is adopted, a bracket in the tilting mechanism is hinged with the base, the reset elasticity is provided through the torsion spring, and the reset flexibility of the chair back is better; and the handle limit component can timely and effectively limit the angle of the chair back.

Preferably, the bracket is provided with an arc-shaped tooth block, and the arc-shaped tooth block takes a hinged point of the bracket and the base as a circle center; the handle limiting assembly comprises a limiting plate hinged to the base, a handle driving the limiting plate to swing along the hinged end of the handle and a tension spring driving the handle to reset; the limiting plate is provided with a tooth part matched with the arc-shaped tooth block on the bracket; when the tooth part of the limiting plate is meshed with the arc-shaped tooth block of the bracket, the bracket is locked and positioned; when the tooth part of the limiting plate is separated from the arc-shaped tooth block of the support, the support is movably arranged relative to the base. In the scheme, the arc-shaped tooth block and the bracket rotate concentrically and synchronously, the limiting plate in the handle limiting assembly is provided with the tooth part which is meshed with the arc-shaped tooth block, and a user can adjust the limiting plate through the handle so as to control whether the arc-shaped tooth block and the chair back are locked or not; and the handle can be reset mechanically through the arranged tension spring, so that the use of a user is more convenient.

Preferably, the inner end part of the handle is provided with a clamping plate assembly, one end of the clamping plate assembly is hinged on the base, and the handle can rotate along the hinged end; the other end of the clamping plate component is connected with the base through a tension spring; the movable end of the limiting plate is located between the two end portions of the clamping plate assembly, and the clamping plate assembly acts on the movable end of the limiting plate to drive the limiting plate to swing.

The above technical scheme is adopted in the utility model, this technical scheme relates to a simple and easy folding seat chair, and the lower tip of the back of the chair in this simple and easy folding seat chair is articulated with the support of seat support top and is set up, and is equipped with locking Assembly on the support and is used for the spacing locking of the back of the chair. By adopting the scheme, the chair back can rotate along the hinge point relative to the chair seat, and the chair back can be forwards overturned relative to the hinge point to cover the chair seat due to the fact that the hinge point is located on the support above the chair seat, namely the chair back is stacked on the chair seat, so that the occupied space of the chair is reduced, the single transportation quantity is improved, the cost of an enterprise is reduced, and the carrying of workers is facilitated; on the other hand, when a user purchases the boxed seat, the chair back and the seat are connected well, the user only needs to open the chair back relative to the seat and fix the chair back through the locking assembly, the whole assembly is very convenient, and the user does not need to complete the assembly between the two large parts of the chair back and the seat.

Drawings

Fig. 1 is a schematic structural view of a reclining mechanism in embodiment 1.

Fig. 2 is a schematic structural view of a handle stopper assembly in the reclining mechanism of embodiment 1.

Fig. 3 is a first schematic view of a framework structure of the simple folding seat in embodiment 3.

Fig. 4 is a schematic view of a framework structure of the simple folding seat in embodiment 3.

Fig. 5 is a schematic structural view of the locking assembly.

Fig. 6 is a left side view of the frame structure of the simple folding seat in embodiment 3.

Fig. 7 is a right side view of the frame structure of the simple folding seat in embodiment 3.

Fig. 8 is a schematic structural diagram of the hinge mechanism.

Fig. 9 is a schematic packing diagram of the simple folding seat in embodiment 3.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Example 1:

as shown in fig. 1, 2 and 5, the present embodiment relates to a recliner mechanism for a seat for adjusting a seating angle formed between a seat back and a seat bottom. The tipping mechanism comprises a base 41, a bracket 42 hinged with the base 41, a torsion spring 43 providing a resetting force for the bracket 42, and a handle limiting component limiting the rotation of the bracket 42. The central end of the torsion spring 43 is fixed on the hinge point of the bracket 42 and the base 41, and the movable end of the torsion spring 43 is connected on the bracket 42. In a further embodiment, the bracket 42 is provided with an arc-shaped toothed block 44, and the arc-shaped toothed block 44 is centered on a hinge point of the bracket 42 and the base 41. The handle limiting assembly comprises a limiting plate 45 hinged to the base 41, a handle 46 driving the limiting plate 45 to swing along the hinged end of the limiting plate, and a tension spring 47 driving the handle 46 to reset. The limiting plate 45 is provided with a tooth part which is matched with the arc-shaped tooth block 44 on the bracket 42. When the tooth part of the limit plate 45 is engaged with the arc-shaped tooth block 44 of the bracket 42, the bracket 42 is locked and positioned. When the tooth part of the limit plate 45 is disengaged from the arc-shaped tooth block 44 of the bracket 42, the bracket 42 is movably arranged relative to the base 41. In the above scheme, the arc-shaped tooth block 44 and the bracket 42 rotate concentrically and synchronously, the limiting plate 45 in the handle 46 limiting assembly is provided with a tooth part meshed with the arc-shaped tooth block 44, and a user can adjust the limiting plate 45 through the handle 46 to control whether to lock the arc-shaped tooth block 44 and the chair back. And the handle 46 can be reset mechanically through the arranged tension spring 47, so that the use is more convenient for users.

In a further embodiment, the inner end of the handle 46 is provided with a cleat assembly 48, one end of the cleat assembly 48 being hinged to the base 41, the handle 46 being able to rotate along this hinged end. The other end of the clamping plate assembly 48 is connected with the base 41 through a tension spring 47. The movable end of the limiting plate 45 is located between the two ends of the clamping plate assembly 48, and the clamping plate assembly 48 acts on the movable end of the limiting plate 45 to drive the limiting plate 45 to swing. In operation, external force acts on the handle 46 to drive the clamping plate assembly 48, the clamping plate assembly 48 rotates along the hinged end thereof, the movable end of the limiting plate 45 is driven to rotate along the hinged point of the limiting plate 45, and therefore the meshing relation between the tooth part of the limiting plate 45 and the arc-shaped tooth block 44 is released; when the external force is removed, the tension spring 47 acts on the movable end of the clamping plate assembly 48, so that the clamping plate assembly 48 is rotated along the hinged end thereof to be reset, the movable end of the limiting plate 45 is driven to rotate along the hinged point of the limiting plate 45 to be reset, and the tooth part of the limiting plate 45 is re-meshed with the arc-shaped tooth block 44.

In the traditional scheme, the tilting mechanism is generally integrated in a table and chair tray below a chair seat, the structure is complex, the cost is high, and the resetting flexibility of the tilting mechanism is poor. In the scheme, the independently arranged tilting mechanism is adopted, the bracket 42 in the tilting mechanism is hinged with the base 41, the return elasticity is provided by the torsion spring 43, and the return flexibility of the chair back is better; and the chair back angle can be timely and effectively limited by the handle 46 limiting component.

In addition, the tilting mechanism can be provided with a hinged part used for connecting the chair back and a locking component used for limiting and locking the chair back above the bracket. The hinge member and locking assembly may be mounted directly to the bracket or as a fitting that is assembled to the bracket when the back of the chair is to be mounted. After the tilting mechanism and the chair back are installed, the chair back can rotate along a hinge point, and the locking assembly can fix the chair back and the support. In particular, the locking assembly comprises a locking pin 31 movably arranged on the bracket, and a locking spring 32 acting on the locking pin.

Example 2:

the embodiment relates to a chair, which comprises a chair seat and a chair back; the chair back is arranged on the chair seat through the tilting mechanism in the embodiment 1, the chair back is arranged on a support 42 of the tilting mechanism, a base 41 of the tilting mechanism is fixed on the side wall of the chair seat, and the sitting angle formed between the chair back and the chair seat can be adjusted through the structure of the tilting mechanism.

Example 3:

as shown in fig. 3 to 9, the present embodiment relates to a simple folding chair, which includes a seat 1, a backrest 2, an air rod and a base, and the inside skeleton structures of the seat 1 and the backrest 2 are shown in the figures, but the explanation of the technical solution is not affected. The base is a movable base, the lower end part of the gas rod is arranged on the movable base, and the base is arranged on the upper end part of the gas rod. The lower tip of back of the chair 2 passes through support 42 to be connected on seat support 1, and the lower tip of back of the chair 2 specifically articulates the setting with the support 42 of seat support 1 top, and is equipped with locking Assembly 3 on the support 42 and is used for the spacing locking of back of the chair 2. When the locking component 3 is in an unlocked state, the chair back 2 can be forwards overturned and covered on the chair seat 1 by taking the hinge point as a center. The locking assembly 3 comprises a locking pin 31 movably arranged on a bracket 42 and a locking spring 32 acting on the locking pin 31. In the technical scheme, the locking spring 32 in the locking assembly 3 acts on the locking pin 31 to provide a resetting force for the locking pin 31, and the locking pin 31 is used for locking the chair back 2 to limit the movement of the chair back 2. This technical scheme relates to a simple and easy folding seat chair, and the lower tip of the back of the chair 2 in this simple and easy folding seat chair articulates with the support 42 of seat support 1 top and sets up, and is equipped with locking Assembly 3 on the support 42 and is used for the spacing locking of the back of the chair 2. Adopt this scheme, back of the chair 2 can rotate along the pin joint for seat support 1 to because the pin joint is in the support 42 of 1 top of seat support, so back of the chair 2 can be relative the forward upset of pin joint and cover on the seat support 1, realize promptly that back of the chair 2 stacks on seat support 1, reduces the space that the seat occupy on the one hand, has improved single transportation quantity, reduces the cost of enterprise, the workman of being convenient for carries. On the other hand, when the user buys the box-packed chair, the chair back 2 is connected with the chair seat 1, the user only needs to open the chair back 2 relative to the chair seat 1 and then fix the chair back through the locking component 3, the whole assembly is very convenient, and the user does not need to complete the assembly between the two large parts of the chair back 2 and the chair seat 1.

In a further embodiment, the upper end surface of the seat 1 is matched with the front end surface of the backrest 2, and when the backrest 2 is turned over and covered on the seat 1, the concave-convex part of the upper end surface of the seat 1 is complementarily attached to the concave-convex part of the front end surface of the backrest 2. Specifically, when the chair is a power racing chair, the chair seat 1 includes a chair seat body 11 and chair seat side baffles 12 arranged at two sides of the chair seat body 11. The seat back 2 includes a seat back main body 21, and a waist side rail 22 and a shoulder side rail 23 provided on both sides of the seat back main body 21. The shoulder side stop 23 is located above the waist side stop 22, and a notch 24 is formed between the shoulder side stop 23 and the waist side stop 22. When the backrest 2 is turned over and covered on the seat 1, the seat side stop 12 is positioned in the notch 24 between the shoulder side stop 23 and the waist side stop 22. In the above-described technical solution, the seat back 2 can be folded forward to cover the seat 1, and further, in order to reduce the thickness of the seat back 2 and the seat 1 stacked, the concave-convex portion of the upper end surface of the seat 1 and the concave-convex portion of the front end surface of the seat back 2 are complementarily attached. When the chair is a competitive chair, the chair seat side baffle 12 on the chair seat 1 is positioned in the notch 24 between the shoulder side baffle 23 and the waist side baffle 22 on the chair back 2, so that the ergonomic shape is met, the folded chair is matched, and the utilization rate of the packaging space is effectively improved.

As shown in fig. 9, the length of the backrest main body 21 is greater than that of the seat 1, and when the backrest 2 is turned over and covered on the seat 1, the headrest portion of the backrest main body 21 is located at the front side of the seat body 11 and forms an accommodating area below the headrest portion. In the scheme, the chair back 2 can be forwards turned over to cover the chair seat 1 to realize the box-packing, further on the chair back 2 is turned over to cover the chair seat 1, and the object placing area formed below the headrest part of the chair back main body 21 is used for placing the air rod 5 and the base 6 (the base is split into the central disc and the plurality of chair legs), so that the scheme can arrange the object placing layout scheme into a rectangular space after the seat is subjected to modular decomposition, and the packaging space utilization rate is effectively improved.

As shown in fig. 6, the simple folding seat of the present embodiment further includes the reclining mechanism 4 described in embodiment 1, and the lower end portion of the backrest 2 is connected to the seat 1 through the reclining mechanism 4. As mentioned above, "the lower end portion of the chair back 2 is hinged to the bracket 42 above the chair seat 1, and the bracket 42 on which the locking component 3 is arranged for limiting and locking the chair back 2" is the bracket 42 of the reclining mechanism 4 in embodiment 1; the base 41 of the tilting mechanism 4 is fixed on the side wall of the chair seat 1; the sitting angle formed between the chair back 2 and the chair seat 1 can be adjusted by the structure of the tilting mechanism 4. As shown in fig. 3 to 4,6 to 8, only one side of the lower end of the backrest 2 is connected to the seat 1 through the tilting mechanism 4, the other side of the lower end of the backrest 2 is connected to the seat 1 through the pivot mechanism 5, and the pivot mechanism 5 is similar to the tilting mechanism 4 in that it also includes a base 41 and a bracket 42 hinged to the base 41. But the difference lies in that: a support 42 in the pivoting mechanism 5 is provided with a limiting sliding groove 40, the limiting sliding groove 40 takes a hinge point as an axis, and a base 41 in the pivoting mechanism 5 is provided with a limiting column 49 for being arranged in the limiting sliding groove 40. The pivoting mechanism 5 is matched with the inclining mechanism 4 for use, and the inclining angle of the chair back 2 is adjusted.

It should be noted that for this embodiment 1, this embodiment relates to a class of chairs, swivel chairs, in particular competitive electric chairs; however, the connecting structure of the chair back 2 and the chair seat 1 and the arrangement of the tilting mechanism 4 in the above embodiment; may be used alone or in combination in other seat types. 2, the locking assembly 3 in the above embodiment is used to limit and lock the backrest 2, and other moving structures are not limited only with respect to the hinge point of the backrest 2 and the bracket 42, such that the backrest 2 can still move relative to the seat 1 through the reclining mechanism 4 when the locking assembly 3 is in the locked state as will be described below.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims (8)

1. A simple folding chair comprises a chair seat and a chair back; the lower end part of the chair back is connected to the chair seat through a bracket; the method is characterized in that: the lower end part of the chair back is hinged with a bracket above the chair seat, and the bracket is provided with a locking component for limiting and locking the chair back; when the locking assembly is in an unlocking state, the chair back can be forwards overturned and covered on the chair seat by taking the hinge point as the center.

2. A simple folding seat as claimed in claim 1, wherein: the upper end surface of the seat is matched with the front end surface of the chair back, and when the chair back is overturned to cover the seat, the concave-convex part of the upper end surface of the seat is complementarily attached to the concave-convex part of the front end surface of the chair back.

3. A simple folding seat as claimed in claim 2, wherein: the chair seat comprises a chair seat body and chair seat side baffles arranged on two sides of the chair seat body; the chair back comprises a chair back main body, and a waist side stop and a shoulder side stop which are arranged on two sides of the chair back main body; the shoulder side baffle is positioned above the waist side baffle, and a notch is formed between the shoulder side baffle and the waist side baffle; when the chair back is overturned and covered on the chair seat, the chair seat side baffle is positioned in the notch between the shoulder side baffle and the waist side baffle.

4. A simple folding seat as claimed in claim 3, wherein: the length of back of the chair main part is greater than the length of seat support main part, and when the back of the chair upset covered on the seat support, the head rest part of back of the chair main part was in the front side of seat support body and constituted in head rest part below and put the thing region.

5. A simple folding seat as claimed in claim 1, wherein: the locking assembly comprises a locking pin movably arranged on the support and a locking spring acting on the locking pin.

6. A simple folding seat as claimed in claim 1, wherein: the lower end part of the chair back is connected to the chair seat through a tilting mechanism; the tilting mechanism comprises a base fixed on the side wall of the chair seat, a bracket hinged with the base, a torsional spring for providing resetting force for the bracket, and a handle limiting component for limiting the rotation of the bracket; the center end of the torsion spring is fixed on a hinged point of the support and the base, and the movable end of the torsion spring is connected to the support.

7. The easy fold seat of claim 6, wherein: the bracket is provided with an arc-shaped tooth block, and the arc-shaped tooth block takes the hinged point of the bracket and the base as the circle center; the handle limiting assembly comprises a limiting plate hinged to the base, a handle driving the limiting plate to swing along the hinged end of the handle and a tension spring driving the handle to reset; the limiting plate is provided with a tooth part matched with the arc-shaped tooth block on the bracket; when the tooth part of the limiting plate is meshed with the arc-shaped tooth block of the bracket, the bracket is locked and positioned; when the tooth part of the limiting plate is separated from the arc-shaped tooth block of the support, the support is movably arranged relative to the base.

8. A simple folding seat as claimed in claim 7, wherein: the clamping plate assembly is arranged at the inner end part of the handle, one end of the clamping plate assembly is hinged to the base, and the handle can rotate along the hinged end; the other end of the clamping plate component is connected with the base through a tension spring; the movable end of the limiting plate is located between the two end portions of the clamping plate assembly, and the clamping plate assembly acts on the movable end of the limiting plate to drive the limiting plate to swing.

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