CN202357914U - Folding support of seat - Google Patents

Abstract

The utility model discloses a chair folding bracket, which comprises a main support rod, an upper rod, a lower rod, a chair seat, a buckle hook, an elastic element, a connecting rod and a middle shaft, the lower end of the main supporting rod is pivoted at the two sides of the tail end of the vehicle body bracket, the lower end of the upper rod is pivoted with the upper end of the main supporting rod, the upper end of the upper rod is pivoted with the front end of the chair seat, the middle part of the lower rod is pivoted with the middle part of the main supporting rod, the upper end of the lower rod is pivoted with the rear end of the chair seat, the lower end of the lower rod is pivoted with the upper end of the connecting rod, the lower end of the connecting rod is pivoted with the vehicle body bracket, the buckle hook is fixed at the upper end of the main supporting rod, the middle parts of the two sides of the chair seat are respectively provided with a sliding groove for the middle shaft to pass through and slide, the two ends of the middle shaft freely pass through the sliding grooves and are buckled with the buckle hooks, one end of the elastic element is fixed with the end part of the chair seat, and the other end of the elastic element is fixed with the middle shaft. The utility model has the advantages of saving storage space, simple operation and convenient carrying.

Description

seat folding bracket

technical field

The utility model relates to a seat folding support, in particular to a seat folding support which can be unfolded or folded, saves storage space and is convenient to carry.

Background technique

With the improvement of people's living standards, the concept of individuality, fashion, health, and environmental protection has been deeply rooted in the hearts of the people. Fashionable and environmentally friendly daily necessities and vehicles are sought after by more and more people. Bicycles and electric vehicles have also changed from a simple The transportation tool has developed into a symbol of a fashionable and healthy lifestyle, and it is also one of the ways to protect the environment. The foldable bicycle or electric car that saves storage space and is easy to carry is small in size and light in weight after folding. It is very convenient to go up and down stairs, elevators, buses and subways, etc., and the folding bike has a beautiful appearance and exquisite workmanship. It is definitely the best equipment for the fashion family.

The folding methods of existing foldable bicycles or electric vehicles are relatively simple. Usually, a folding mechanism is arranged between the front wheel steering rod and the body bracket, and the front wheel steering rod and the body bracket are folded by the folding mechanism. The volume of the folding method is still large after being folded. The reason is that the whole folding car is not highly folded, especially the seats of electric cars are generally not foldable, and the space occupied by the seat is just the largest, so the folded The effect is not ideal. And along with the increasing day by day of living space and convenient traveling and carrying demand, this obviously can't satisfy people's use requirement.

Based on the above deficiencies, therefore, there is a need for a seat folding bracket that can unfold or fold the seat of the folding car, save storage space, and is convenient to carry.

Utility model content

The purpose of the utility model is to provide a seat folding bracket that can unfold or fold the seat of a folding car, save storage space, and is convenient to carry.

In order to achieve the above purpose, the utility model provides a seat folding bracket, which is symmetrically installed between the vehicle body bracket and the seat, including a main support rod, an upper rod, a lower rod, a seat, a buckle hook, an elastic element, a connecting rod and The central axis, the lower end of the main support rod is pivotally connected to both sides of the rear end of the vehicle body bracket, the lower end of the upper rod is pivotally connected to the upper end of the main support rod, and the upper end of the upper rod is connected to the seat seat. The two sides of the front end are pivotally connected, the middle part of the lower rod is pivotally connected to the middle part of the main support rod, the upper end of the lower rod is pivotally connected to both sides of the rear end of the seat, and the lower end of the lower rod is connected to the The upper end of the connecting rod is pivotally connected, the lower end of the connecting rod is pivotally connected to both sides of the front end of the vehicle body bracket, the buckle is fixed to the upper end of the main support rod, and the two sides of the seat seat are The middle part is provided with sliding slots for the central shaft to pass through and slide, the two ends of the central shaft freely pass through the sliding slots, and the elastic element is stretched and connected between the central shaft and the seat The central shaft of the seat folding bracket is unfolded and fastened with the buckle, and the central shaft of the seat folding bracket is folded and disengaged from the buckle.

Preferably, one side of the upper end of the buckle is provided with an opening toward the rear of the seat, and the opening is fastened with the end of the central axis. Since the rotation of the seat seat drives the rotation of the central axis when the seat folding bracket is folded, the opening can prevent the rotation of the central axis, thus playing a locking role.

Preferably, the seat folding bracket further includes a handle, one end of the handle is fixed to the central axis, and the other end protrudes outward. By pulling the handle, the central shaft is driven to move, so that the central shaft is disengaged from the buckle, so that the purpose of unlocking the seat is conveniently achieved.

Preferably, a locking part extends from one side of the middle part of the main support rod, and a recess is formed on one side edge of the locking part along the length direction of the main support rod. When the seat folding bracket is folded, The depression is fastened with the end of the central shaft. By providing a recess on the locking part, the recess is fastened with the central shaft, so that the seat frame is locked in this state after being folded, and the seat is prevented from being accidentally opened. Specifically, an edge of the locking portion on the same side as the depression is provided with an inclined surface, and during the folding process of the seat folding bracket, the inclined surface can guide the central shaft to engage with the depression. When the central axis moves down with the seat seat, due to the elastic action of the elastic element, the central axis cannot reach the depression, and at this moment, the inclined plane can force it to move along the inclined plane when the central axis moves downward. side into the recess, so as to achieve the purpose of automatic snap-fit locking.

Preferably, the elastic element is a tension spring. The central axis can be reset and locked by using the elastic recovery force of the tension spring, and the structure is simple and the control is easy.

Compared with the prior art, since the utility model pivotally connects the lower end of the upper rod and the middle part of the lower rod to the main support rod, the upper ends of the upper rod and the lower rod are connected with the seat seat respectively. The two ends are pivotally connected to form a rotatable seat, and the connecting rod is pivotally connected to the lower end of the lower rod, and the connecting rod is pivotally connected to the vehicle body bracket, and simultaneously the main support rod The lower end of the lower end of the seat is pivotally connected with the body bracket, so that the seat drives the main support bar to rotate around its pivot joint through the lower bar and the connecting rod during the rotation process, so that the seat folding bracket can be folded downward. fold. And by installing the buckle hook on the upper end of the main support rod and setting a freely movable center shaft at the bottom of the seat, the center shaft and the buckle hook are automatically buckled by using the restoring force of the elastic element. Close, so that the entire seat folding bracket can be locked when it is fully opened, preventing danger caused by accidental folding of the seat folding bracket during driving. After the entire seat folding bracket is folded, it can save a lot of storage space for the folding bike, and it is extremely convenient to carry when traveling.

Description of drawings

Fig. 1 is a structural schematic diagram of the seat folding bracket of the present invention.

Fig. 2 is another structural schematic diagram of the seat folding bracket of the present invention.

Fig. 3 is an exploded schematic view of the seat folding bracket of the present invention.

Fig. 4 is an enlarged view of part A in Fig. 1 .

Fig. 5 is a schematic view of the unlocked state of the seat folding bracket of the present invention.

Fig. 6 is a schematic view of the seat folding bracket of the present invention when it is folded.

Fig. 7 is a schematic diagram of the state when the folding bracket of the seat of the present invention is fully folded.

Detailed ways

As shown in Figure 1, Figure 2 and Figure 3, the utility model seat folding bracket 100 is symmetrically installed between the vehicle body bracket 200 and the seat 300, including the main support rod 1, the upper rod 2, the lower rod 3, the seat 4. Buckle hook 5, tension spring 6, connecting rod 7, handle 8 and central axis 9. The lower end of the main support rod 1 is pivotally connected to both sides of the end of the vehicle body bracket 200, the lower end of the upper rod 2 is pivotally connected to the upper end of the main support rod 1, and the upper end of the upper rod 2 is connected to the seat 4. The two sides of the front end are pivotally connected. The middle part of the lower rod 3 is pivotally connected to the middle part of the main support rod 1, the upper end of the lower rod 3 is pivotally connected to both sides of the rear end of the seat 4, and the lower end of the lower rod 3 is connected to the connecting rod. The upper end of the rod 7 is pivotally connected. The lower end of the connecting rod 7 is pivotally connected to two sides of the front end of the vehicle body frame 200 . The buckles 5 are respectively fixed on the upper end of the main support rod 1, and one side of the upper end of the buckle 5 is provided with an opening 51 toward the rear of the seat 300, and the middle parts of both sides of the seat 4 are There is a sliding groove 41 for the central axis 9 to pass through and slide, and the two ends of the central axis 9 freely pass through the sliding groove 41 and are fastened with the opening 51 of the buckle hook 5. Because the seat folding bracket When the 100 is folded, the rotation of the seat 4 drives the rotation of the central shaft 9, and the opening 51 can prevent the rotation of the central shaft 9, thus playing a locking role. Both sides of the front and rear ends of the seat 4 are connected by a front axle 42 and a rear axle 43. One end of the tension spring 6 is fixed to the front axle 42 at the front end of the seat 4, and the other end is connected to the central axis 9. fixed. One end of the handle 8 is fixed to the central axis 9 , and the other end protrudes toward the rear of the seat 300 . Pulling the handle 8 backward drives the central shaft 9 to move, so that the central shaft 9 is separated from the buckle 5, so that the seat 4 can be unlocked, which is very convenient to use.

Certainly, the opening 51 of the clasp 5 can also be opened toward the front of the seat 300 , then one end of the tension spring 6 is fixed to the rear axle 43 , and the other end is fixed to the central axle 9 . One end of the handle 8 is fixed to the central axis 9 , and the other end can protrude toward the rear of the seat 300 or toward the front of the seat 300 . When the handle 8 stretches out to the rear and is unlocked, the handle 8 needs to be pushed forward; when the handle 8 stretches out to the front and is unlocked, the handle 8 needs to be pulled forward.

As shown in FIG. 4 , specifically, a locking part 11 extends from one side of the middle part of the main support rod 1 , and a recess 11a is provided on one side edge of the locking part 11 along the length direction of the main support rod 1 downward. , when the seat folding bracket 100 is folded, the recess 11a is buckled with the end of the central shaft 9 . More specifically, the edge of the locking portion 11 on the same side as the depression 11a is provided with an inclined surface 11b, and the inclined surface 11b can guide the center shaft 9 and the depression during the folding process of the seat folding bracket 100. 11a snaps together. When the central axis 9 moved down with the seat 4, the central axis 9 could not reach the depression 11a due to the elastic action of the tension spring 6, and at this moment, the inclined surface 11b could be positioned on the central axis. 9 is forced to enter the recess 11a along the slope 11b when moving down, so as to achieve the purpose of automatic snap-fit locking.

5, 6 and 7, the seat 300 is fixed on the upper surface of the seat 4, when the seat folding bracket 100 is fully opened, the two main support rods 1 are tilted forward. Pivoted on both sides of the vehicle body bracket 200, the upper rod 2 and the lower rod 3 support the seat 4 to make it horizontal, and the connecting rod 7 is supported on the lower rod 3 and the body. Between the vehicle brackets 200, at this time, the lower rod 3, the connecting rod 7 and the main support rod 1 form a cross shape. The tension spring 6 pulls the central shaft 9 so that the central shaft 9 is at the left end of the sliding groove 41, and at the same time, the two ends of the central shaft 9 are in the opening 51 of the buckle hook 5, the The central axis 9 is fixed so that the seat 4 is fixed. The seat seat 4 is fixed so that the lower rod 3 cannot rotate around its pivot joint with the main support rod 1 , so that the entire seat folding bracket 100 is in a locked state. When the seat folding bracket 100 needs to be folded, manually pull the handle 8 backward, and the handle 8 drives the central shaft 9 to move, and the central shaft 9 moves from the left end to the right end of the sliding groove 41 , so that its two ends are separated from the opening 51 of the buckle 5, and at the same time, the central shaft 9 stretches the tension spring 6, and the seat folding bracket 100 is unlocked. At this point, the seat 300 can be pushed to rotate backwards, and the handle 8 can be released after the rotation, and the central axis 9 returns to the position of the sliding groove 41 under the pulling force of the tension spring 6 . left end. The seat 300 rotates backward to drive the seat 4 to rotate, so that the upper rod 2 rotates clockwise around the pivot joint with the main support rod 1, and the lower rod 3 rotates around the pivot joint with the main support rod 1. The pivot joint of the main support rod 1 rotates clockwise, and the clockwise rotation of the lower end of the lower rod 3 drives the connecting rod 7 to rotate counterclockwise. Since the lower end of the connecting rod 7 is pivotally connected to the vehicle body bracket 200, and the main support rod 1 is also pivotally connected to the rear end of the vehicle body bracket 200, therefore, under the action of the lower rod 3, The main support rod 1 rotates counterclockwise. When the seat 4 rotates to a certain degree, the end of the central shaft 9 reaches the slope 11b of the locking part 11, and the slope 11b forces the central shaft 9 to slide in the sliding groove 41 , when the end of the central shaft 9 moves down to the depression 11a, the tension spring 6 automatically tightens the central shaft 9, so that the end of the central shaft 9 is snapped into the depression In 11a, at this time, the seat folding bracket 100 is in a locked state, the seat 300 is in a horizontal state, and the seat folding bracket 100 is completely folded on the vehicle body bracket 200 . In addition, the seat back 301 of the seat 300 is designed as a pivot structure, at this time, the seat 300 can be further folded by turning the seat back 301 to reduce the occupied space. When opening, pull the handle 8 to make the central axis 9 withdraw from the depression 11a to rotate the seat 4, and the upper rod 2, the lower rod 3, the main support rod 1 and the connecting rod 7 interact to form a seat 4. When the central axis 9 reaches the opening 51 and is fastened with the opening 51, the seat folding bracket 100 is locked, and the seat 300 is ready for the driver to sit on.

Since the utility model pivotally connects the lower end of the upper rod 2 and the middle part of the lower rod 3 to the main support rod 1, the upper ends of the upper rod 2 and the lower rod 3 are connected to the two sides of the seat 4 respectively. The ends are pivotally connected to form a rotatable seat 300, and the connecting rod 7 is pivotally connected to the lower end of the lower rod 3, and the connecting rod 7 is pivotally connected to the vehicle body bracket 200, and simultaneously the The lower end of the main support rod 1 is pivotally connected to the vehicle body bracket 200, so that the seat 300 drives the main support rod 1 to rotate around its pivot joint through the lower rod 3 and the connecting rod 7 during the rotation process, Realize that the seat folding bracket 100 is folded downward. And by installing buckle hook 5 on the upper end of described main support bar 1 and setting free-moving central axis 9 at the bottom of seat seat 4, utilize the restoring force effect of described extension spring 6, make described central axis 9 and all The buckle hook 5 is automatically buckled, thereby locking the entire seat folding bracket 100 when it is fully opened, preventing danger caused by accidental folding of the seat folding bracket 100 during driving. In addition, by providing a recess 11 a on the locking portion 11 , the recess 11 a is engaged with the central axis 9 , so that the seat folding bracket 100 is in a locked state after being folded, preventing the seat 300 from being accidentally opened. After the entire seat folding bracket 100 is folded, it can save a large amount of storage space for the folding bicycle, and is easy to operate during use and extremely convenient to carry when traveling.

The specific structures of the vehicle body bracket 200 and the seat 300 involved in the seat folding bracket 100 of the present invention are well known to those skilled in the art, and will not be described in detail here.

What is disclosed above is only a preferred example of the utility model, and of course the scope of rights of the utility model cannot be limited with this. Therefore, equivalent changes made according to the patent scope of the utility model still belong to the scope covered by the utility model .

Claims (6)

1. A seat folding bracket, which is symmetrically installed between the vehicle body bracket and the seat, is characterized in that: it includes a main support rod, an upper rod, a lower rod, a seat, a buckle hook, an elastic element, a connecting rod and a central axis, The lower end of the main support rod is pivotally connected to both sides of the rear end of the vehicle body bracket, the lower end of the upper rod is pivotally connected to the upper end of the main support rod, and the upper end of the upper rod is connected to both sides of the front end of the seat. side pivot connection, the middle part of the lower rod is pivotally connected to the middle part of the main support rod, the upper end of the lower rod is pivotally connected to both sides of the rear end of the seat, and the lower end of the lower rod is connected to the connecting rod. The upper end of the rod is pivotally connected, the lower end of the connecting rod is pivotally connected to both sides of the front end of the vehicle body bracket, the buckle is fixed to the upper end of the main support rod, and the middle parts of both sides of the seat are opened There is a sliding groove for the central axis to pass through and slide. Both ends of the central axis freely pass through the sliding groove. The elastic element is stretched and connected between the central axis and the seat. The central axis of the seat folding bracket is engaged with the hook, and the central axis of the seat folding bracket is disengaged from the buckle when the folding seat is folded. 2 . The seat folding bracket according to claim 1 , wherein an opening is opened on one side of the upper end of the buckle toward the rear of the seat, and the opening is fastened with the end of the central axis. 3 . 3. The seat folding support according to claim 1, characterized in that: the seat folding support further comprises a handle, one end of the handle is fixed to the central shaft, and the other end protrudes outward. 4. The seat folding bracket according to claim 1, wherein a locking part extends from one side of the middle part of the main support rod, and one side edge of the locking part extends along the length direction of the main support rod. There is a depression on the bottom, and when the seat folding bracket is folded, the depression is fastened with the end of the central axis. 5. The seat folding bracket according to claim 4, wherein the edge of the locking part on the same side as the depression is provided with a slope, and during the folding process of the seat folding bracket, the slope can guide the The central axis is engaged with the depression. 6. The seat folding bracket according to claim 1, wherein the elastic element is a tension spring.

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