CN104771003A - Portable multifunctional folding chair - Google Patents

Abstract

The invention discloses a portable multifunctional folding chair, which is characterized in that it comprises a chair surface, a chair back and chair legs, an angle adjustment device is provided at the joint between the chair back and the chair surface, and the chair legs are connected by shafts. Two-stage structure, the chair leg is connected to one end of the gas spring, and the other end of the gas spring is connected to the four-bar mechanism. The valve of the gas spring is linked by a cross bar. Mechanism; a portable multifunctional folding chair of the present invention is used to adjust the position of the back of the chair through the setting of the angle adjustment device, and through the setting of the four-bar mechanism and the gas spring, the linkage between the front and rear chair legs is realized; the portable The multi-functional folding chair can realize the functions of a suitcase, a ladder and a coffee table through the setting of the first wooden board and the second wooden board. Compared with existing products on the market, it has more functions, and the operation is more convenient and labor-saving.

Description

Portable Multifunctional Folding Chair

technical field

The invention relates to a chair, in particular to a foldable multifunctional chair.

Background technique

At present, there are all kinds of folding chairs on the market. People can use folding chairs in different places such as camping, beach leisure, sports events, etc. It is a chair that adapts to various places and needs. This folding chair can provide For a short break, it can be easily carried and stored, so folding chairs have become an indispensable member of furniture.

However, most of the folding chairs on the market use linkage mechanisms to realize folding, and usually only have the function of ordinary chairs. With the growth of the world's population, personal living space is limited. If other functions of the chair can be realized through folding, it will bring people Come to great convenience.

Contents of the invention

In view of the disadvantages of single function and insufficient portability of existing folding chairs on the market, the purpose of the present invention is to disclose a portable multifunctional folding chair based on the structure of ordinary chairs, and discloses multiple functions and realization mechanisms of the invention.

In order to achieve the above object, the portable multifunctional folding chair of the present invention is realized through the following technical solutions: a portable multifunctional folding chair is characterized in that it includes a chair surface, a chair back and chair legs, and the chair back and chair The joint of the surface is provided with an angle adjustment device. The chair legs are a two-stage structure connected by a shaft. The chair legs are connected to one end of the gas spring, and the other end of the gas spring is connected to the four-bar mechanism. The chair surface is set in two layers. The seat surface is designed with a positioning locking mechanism.

A first plank is arranged in the middle of the chair surface and the ground, the first plank is parallel to the seat surface, the first plank is set as a first part and a second part, and the area ratio of the first part and the second part is Between 1:1.5 and 1:3, the second part is arranged near the chair leg on the side of the chair back.

A second wooden board is arranged between the first wooden board and the ground, the second wooden board is parallel to the chair surface, and the second wooden board is arranged close to the chair leg on the side of the back of the chair.

The area of the second wooden board is between 1/2 and 1/4 of the area of the chair surface.

The four-bar mechanism is provided with a self-locking device.

The gas spring valve is controlled by cross-bar linkage.

A cross bar is arranged between the front and rear adjacent chair legs.

The outside of the angle adjustment device is a ratchet, with 24 teeth evenly distributed. The inside of the angle adjustment device is symmetrically provided with two crank slider mechanisms and a base, and the crank slider mechanism is engaged with the ratchet wheel. The mechanism is connected with a rotating shaft, the rotating shaft is connected with a plug-in knob, and a bearing is arranged on the rotating shaft.

The beneficial effects achieved by the present invention: the portable multifunctional folding chair of the present invention is used to adjust the position of the back of the chair through the setting of the angle adjustment device, and through the setting of the four-bar mechanism and the gas spring, the position conversion and adjustment of the front and rear chair legs are realized. Locking, through the setting of the cross bar, the linkage of the front and rear chair legs is realized; the portable multi-functional folding chair can realize the functions of a suitcase, a ladder and a coffee table through the setting of the first wooden board and the second wooden board, which is better than the existing ones on the market. Some products have more functions and are more convenient and labor-saving to operate.

Description of drawings

Fig. 1 is the structural representation of angle adjusting device of the present invention;

Fig. 2 is the structural representation of gas spring and four-bar mechanism of the present invention (a is the dead point position of the four-bar mechanism on the chair leg far away from the back of the chair, b is the state when the chair leg is folded away from the back of the chair, and c is near the back of the chair The dead point position of the four-bar mechanism on the side chair legs, d is the state when the side chair legs close to the back of the chair are retracted);

Fig. 3 is a schematic diagram of the functional structure of the chair of the present invention;

Fig. 4 is a schematic diagram of the functional structure of the suitcase of the present invention;

Fig. 5 is a schematic diagram of the functional structure of the ladder of the present invention;

Fig. 6 is a schematic diagram of the functional structure of the coffee table of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

As shown in Figures 1 to 6, the portable multifunctional folding chair of the present invention includes a chair, a suitcase, a ladder and a coffee table.

When the function of the chair is realized, the appearance of the present invention is similar to that of an ordinary seat. The back of the chair can be adjusted freely within a certain angle range and locked at a suitable position. 23. The angle adjustment device 23 is a manual plug-in adjustment mechanism. The outside of the angle adjustment device 23 is a ratchet 1 with 24 teeth evenly distributed. The inside of the angle adjustment device 23 is symmetrically provided with two crank slider mechanisms and a base Seat 5, the slider crank mechanism meshes with the ratchet 1, the slider crank mechanism is connected to the rotating shaft, the rotating shaft is connected to the plug-in knob, the shaft is equipped with a bearing, and the back of the chair can be adjusted at a certain angle by the plug-in angle adjustment device. The adjustment and locking of the seat back angle can be realized within the angle range of the chair.

Many parts of the chair are movable. When used as a chair, the chair leg is a two-stage structure connected by a shaft. The chair leg is connected to one end of the gas spring, and the other end of the gas spring is connected to the four-bar mechanism. The piston rod of the gas spring It is connected with the four-bar mechanism through the shaft, and the four chair legs are locked by using the dead point position of the four-bar mechanism.

The adjustment steps of the angle adjustment device are as follows, the adjustment knob 6 is pulled out, the adjustment knob 6 is connected to the sleeve 7 through a thread, the inner keyway of the sleeve 7 is matched with the spline at the tail of the rotating shaft 8, and the device is in an adjustable position. state, the rotation adjustment knob 6 rotates a certain angle to drive the rotating shaft 8 connected to it to rotate, the rotating shaft 8 drives the linkage plate 4 to rotate through the key connection, and the linkage plate 4 drives the connecting rod 3 to rotate through the compression spring 9, thereby driving the sliding pin 2 along its predetermined The track retracts toward the center of the circle; push back the adjustment knob 6 after reaching the angle you want to adjust, and the sliding pin 2, under the push of the compression spring, meshes with the uniformly distributed teeth in the ratchet 1 and locks; the adjustment knob 6 is pushed inward, that is is not adjustable. The two crank-slider mechanisms are arranged symmetrically in space, and the other part moves similarly.

When realizing the function of the luggage box, the function of retracting the chair legs is to be realized. A self-locking gas spring is designed on the mechanical structure to destroy the dead point position of the four-bar mechanism. The piston rod at one end of the gas spring is connected to the four-bar mechanism, and the other end of the gas spring is connected to the chair. Legs, the gas spring valve is controlled by a cross bar to realize the linkage of the front and rear chair legs, and the gas spring valve core is opened again, and the chair legs can be adjusted to a vertical position on the ground.

The implementation process as a suitcase is as follows: retract the four chair legs of the chair in one direction, retract the two chair legs away from the back of the chair inward into the space under the chair back, and retract the two chair legs near the back of the chair outward, As the handle of the suitcase, the legs away from the back of the seat are respectively connected to the first gas spring and the third gas spring, and the legs near the back of the seat are respectively connected to the second gas spring and the fourth gas spring, and the self-locking gas spring valve core is opened , under the action of the gas spring pressure cylinder 10, the piston rod 14 of the first gas spring moves to the right, and the first V-shaped connecting rod 13 connected thereto rotates clockwise around the fixed fulcrum, driving the connecting rod 11 to destroy the dead point of the connecting rod position, lift the chair leg 12 away from the back of the chair to a position parallel to the ground, close the self-locking gas spring valve core, lock it, and at the same time the first gas spring rotates downward around the fixed fulcrum at the other end, the first gas spring valve The core is also connected to the cross bar, and the cross bar moves along a preset path parallel to the ground, and then opens the valve core of the traction type second gas spring at the other end, and the second gas spring piston rod 15 moves to the right, connecting the second gas spring on it. The V-shaped connecting rod 16 rotates clockwise around the fixed fulcrum, destroys the dead point of the connecting rod, lifts the chair leg near the back of the seat to a position parallel to the ground, closes the self-locking gas spring valve core, and uses it as a handle of the suitcase after being stowed away At this time, the first gas spring piston rod of the chair leg 12 on the side away from the back of the chair is extended to the maximum stroke position, just when the chair leg is retracted to the position parallel to the ground, the gas spring valve core is closed, locked, and the seat back is attached Put down the chair, lock it, and put the legs of the chair, just open the valve cores of each gas spring. The operation process and mutual interaction of the third gas spring and the fourth gas spring are the same as the first gas spring and the second gas spring. spring.

When the function of the ladder is realized, the folding chair is separated from the overlapping auxiliary support legs I19 and II20 arranged on both sides of the chair form, and the chair surface and the back of the chair are turned 180 degrees in space around the side away from the back of the chair When the back of the chair is supported on the ground, a plank parallel to the chair surface is designed at half of the chair surface and the ground, which is divided into two parts according to the area ratio of 1:2, and the part with the area ratio of 2 is arranged near the back of the chair, as In the third step of the ladder gradient, the part with an area ratio of 1 is used as the first step of the ladder gradient. A plank with an area equal to one-third of the chair surface is designed for the part close to the ground, and the side near the back of the chair is arranged parallel to the chair surface, as the fourth step of the ladder gradient. From the connection between the chair surface and the chair legs on the side away from the back of the chair to the contact point of the panel with an area ratio of 1:2 to the wooden board close to the ground, two layers of auxiliary support legs are arranged as the support for the shape of the ladder after being turned over. The first board and the second board One part 21, the second part 17 of the first plank, and the second plank 18 are respectively used as the first, third and fourth steps of the ladder gradient, and the original chair surface is used as the second step.

When the function of the coffee table is realized, the chair surface is designed to be overlapped by two layers of planks, which are hinged at a place far away from the chair back, and the seat surface positioning locking mechanism 22 is opened, and the chair back and the upper chair surface are turned 180 degrees around the hinge. The back of the chair is supported on the ground and can be used as a coffee table.

The above is only a preferred embodiment of the present invention, and it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made. It should also be regarded as the protection scope of the present invention.

Claims (8)

1. A portable multifunctional folding chair, characterized in that it comprises a chair surface, a chair back and chair legs, an angle adjustment device is set at the connection between the chair back and the chair surface, and the chair legs are two sections connected by a shaft The chair leg is connected to one end of the gas spring, and the other end of the gas spring is connected to the four-bar mechanism. The chair surface is set in two layers, and the seat surface is designed with a positioning locking mechanism. 2. The portable multifunctional folding chair according to claim 1, wherein a first wooden board is arranged between the chair surface and the ground, the first wooden board is parallel to the chair surface, and the first wooden board is arranged as The first part and the second part, the area ratio of the first part and the second part is between 1:1.5 and 1:3, and the second part is arranged close to the chair leg on the side of the back of the chair. 3. The portable multifunctional folding chair according to claim 2, a second wooden board is arranged between the first wooden board and the ground, the second wooden board is parallel to the chair surface, and the second wooden board is close to the side of the back of the chair leg arrangement. 4. The portable multifunctional folding chair according to claim 3, the area of the second wooden board is between 1/2 and 1/4 of the area of the chair surface. 5. The portable multifunctional folding chair according to claim 1, said four-bar mechanism is provided with a self-locking device. 6. The portable multifunctional folding chair according to claim 1, a cross bar is arranged between the front and rear adjacent chair legs. 7. The portable multi-functional folding chair according to claim 6, the valve of the gas spring is controlled by the linkage of the cross bar. 8. The portable multi-function folding chair according to claim 1, the outside of the angle adjustment device is a ratchet wheel with 24 teeth evenly distributed, and two crank slider mechanisms and bases are arranged symmetrically inside the angle adjustment device, The slider crank mechanism is engaged with the ratchet, the slider crank mechanism is connected to a rotating shaft, the rotating shaft is connected to a plug-in knob, and a bearing is installed on the rotating shaft.