JP3244406U - Drive-by-wire trays and chairs - Google Patents

Abstract

An object of the present invention is to provide a drive-by-wire tray and chair that have a simple structure, significantly reduce manufacturing costs, and are easy to operate and greatly improve customer satisfaction. [Solution] A backrest inclination control device provided on a tray body includes a backrest lock gear 5 and a backrest lock engagement part to be engaged, and the backrest lock engagement part 6 is connected to the backrest lock gear via a first span wire. The backrest lock gear and the back steel plate can both be rotated synchronously, the connection lever 7 of the seat cushion lifting control device is transmission connected to the second span wire, and the lower part of the seat cushion is A pneumatic rod is attached and a protrusion extends downwardly from the intermediate portion of the connecting lever, the protrusion contacting and cooperating with an upper switch of the pneumatic rod. By pulling the backrest inclination control device and seat cushion elevation control device through the handle, the backrest tilts and returns, and the seat cushion rises and falls. [Selection diagram] Figure 5

Description

TECHNICAL FIELD The present invention relates to a chair, and specifically to a drive-by-wire tray and chair.

Conventional liftable and tiltable recliners generally include casters, legs, pneumatic rods, a chassis, a seat, armrests, a backrest, and the like.

A conventional Chinese patent with Chinese utility model publication number CN210329967U discloses a drive-by-wire seat lifting and tilting office chair. The office chair includes a base and a seat hinged to the top of the base, the seat including a seat and a backrest attached to the rear of the seat, the base including: It includes a bottom base, a top base, and a pneumatic rod connecting the bottom base and the top base, and a telescoping cylinder is connected between the top base and the seat surface, and one end of the telescoping cylinder is connected to the bottom of the top base. the other end of the telescoping cylinder is hingedly connected to the rear of the seat, a first drive device for controlling the operation of the telescoping cylinder is provided at the rear of the seat, A first control switch for controlling the drive device is provided on the side, and the first drive device is connected to the first control switch via a first connection line.

However, the structure of the tilt and lift adjustment modes in the prior art is relatively complex. Therefore, the inventor considered it necessary to provide a drive-by-wire tray that has a simple structure, is easy to install, and can reduce manufacturing costs and improve customer satisfaction.

The present invention has been made in view of the shortcomings of the prior art and aims to provide a drive-by-wire tray and chair.

The drive-by-wire tray provided by the present invention includes a handle, a tray body and a back steel plate, the tray body is attached to the bottom of the seat cushion, and the lower end of the back steel plate is movably connected to the tray body. The upper end of the back steel plate is tightly connected to the backrest, the tray body is provided with a backrest inclination control device and a seat cushion elevation control device, and the two handles are attached to the seat cushion and connected via a span wire. The backrest inclination control device includes an engaged backrest lock gear and a backrest locking part, and the backrest locking part is connected to the backrest inclination control device and the seat cushion elevation control device, respectively. The backrest lock locking part can be separated from the backrest locking gear via the first span wire, and the side of the backrest locking gear remote from the backrest locking part is connected to the backrest locking part through the first span wire. The backrest locking gear and the back steel plate can both rotate synchronously, and the seat cushion lifting control device includes a connecting lever, and the connecting lever is connected to a second span wire. A pneumatic rod is attached to the lower part of the seat cushion, and a protrusion extends downward from the middle part of the connection lever, and the protrusion contacts and cooperates with an upper switch of the pneumatic rod. do.

Preferably, the handle includes a backrest control handle and a seat cushion control handle respectively attached to the rear portions of both sides of the seat cushion, and the backrest control handle is transmission connected to the backrest tilt control device via the first span wire. and the seat cushion control handle is transmission connected to the seat cushion elevation control device via the second span wire.

Preferably, the backrest control handle is attached to the left side of the seat cushion and the seat cushion control handle is attached to the right side of the seat cushion.

Preferably, grooves are provided on both sides of the seat cushion, the two handles are respectively installed in the grooves, and the rear ends of the handles cooperate with the seat cushion to form a rotation joint. (Revolute), and the rotation joint is provided with a spring reset structure.

Preferably, the backrest lock gear and the back steel plate are both attached to a first fixed shaft of the tray body, and both can rotate synchronously around the first fixed shaft, and the backrest lock gear A backrest return torsion spring is attached to the connection point between the first fixed shaft and the first fixed shaft.

Preferably, one end of the backrest locking part remote from the backrest lock gear is attached to the second fixed shaft of the tray body, and the other end is tightly connected to the first span wire, and the backrest locking part can be rotated in a direction away from the backrest lock gear around the second fixed shaft via the first span wire, and a connection point between the backrest locking part and the second fixed shaft includes a The backrest lock is fitted with a return torsion spring.

Preferably, the backrest lock gear is equally provided with a plurality of locking positions, and the backrest locking portion includes an L-shaped locking portion, and the L-shaped locking portion is located at one of the locking positions. The rotation range of the backrest lock gear is 0 to 40 degrees.

Preferably, one end of the connection lever is attached to a third fixed shaft of the tray body, and the other end is tightly connected to the second span wire, and the connection lever is connected to the third fixed shaft through the second span wire. It can be rotated downwards around its axis.

Preferably, the span wire includes an inner steel wire and an outer protective cover, the first span wire is detachably connected to the backrest tilt control device, and the second span wire is detachably connected to the seat cushion elevation control device. connected to.

The chair provided by the present invention uses the drive-by-wire tray described above, and further includes the seat cushion and the backrest.

Compared with the prior art, the present invention has the following beneficial effects.

(1) This invention can realize the tilting and returning of the backrest and the raising and lowering of the seat cushion by pulling the backrest inclination control device and the seat cushion elevation control device through the handle, and the structure is simple and easy to install. It is easy to operate for customers, just pull the handle to adjust the appropriate angle and height, greatly reducing the manufacturing cost, increasing the effectiveness and profit, greatly improving the user experience and satisfaction. improves.

(2) In this invention, the backrest lock gear engages with the backrest locking part, and the rotation of the gear and the multiple locking positions on it enable multi-angle adjustment, and the simple structure expands the range of applications. .

(3) In this invention, by providing multiple return springs, the handle, backrest lock gear, and backrest locking part can all be automatically reset, and the structure is simple and convenient to operate, so the user can The convenience and experience of operation will be greatly improved.

Other features, objects and advantages of the invention will become more apparent from reading the detailed description of non-limiting embodiments with reference to the following drawings.
1 is a schematic structural diagram mainly embodying a chair to which a drive-by-wire tray of the present invention is attached; FIG. 1 is a schematic structural diagram mainly embodying a chair to which a drive-by-wire tray of the present invention is attached; FIG. FIG. 1 is a schematic structural diagram mainly embodying the drive-by-wire tray of the present invention. FIG. 1 is a schematic structural diagram mainly embodying the drive-by-wire tray of the present invention. FIG. 1 is a schematic structural diagram mainly embodying the drive-by-wire tray of the present invention. FIG. 3 is a schematic diagram mainly embodying the mounting position of the backrest control handle of the present invention. FIG. 3 is a schematic diagram mainly embodying the mounting position of the seat cushion control handle of the present invention. FIG. 2 is a schematic diagram mainly embodying the non-pulling handle of the present invention. FIG. 3 is a schematic diagram mainly embodying the handle after being pulled according to the present invention. FIG. 2 is a top view mainly embodying the drive-by-wire tray of the present invention. FIG. 2 is a side view mainly embodying the drive-by-wire tray of the present invention.

Hereinafter, the present invention will be described in detail in combination with specific embodiments. The following examples will help those skilled in the art to further understand the invention, but are not intended to limit the invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the invention. All of these fall within the protection scope of the present invention.

<Example 1>
As shown in FIGS. 1 to 5, the drive-by-wire tray provided by the present invention includes a handle, a tray body 3 and a back steel plate 4, the tray body 3 is attached to the bottom of the seat cushion, and the back steel plate The lower end of the back steel plate 4 is movably connected to the tray body 3, the upper end of the back steel plate 4 is tightly connected to the backrest, the tray body 3 is provided with a backrest tilt control device and a seat cushion elevation control device, and the two handles are connected to the seat. The backrest inclination control device includes a backrest lock gear 5 and a backrest locking part 6, which are attached to the cushion and are transmission-connected to the backrest inclination control device and the seat cushion elevation control device through span wires, respectively. , the backrest locking part 6 is transmission connected to the first span wire, and the backrest locking part 6 can be separated from the backrest lock gear 5 via the first span wire, and the backrest locking part 6 is connected to the backrest locking part 6 through the first span wire. The side remote from the part 6 is tightly connected to the back steel plate 4, and the backrest lock gear 5 and the back steel plate 4 can both rotate synchronously, and the seat cushion lifting control device includes a connection lever 7, and the connection The lever 7 is transmission connected to the second span wire, a pneumatic rod is attached below the seat cushion, and a protrusion extends downward from the middle part of the connecting lever 7, and the protrusion is connected to the upper switch of the pneumatic rod. Contact and collaborate.

In the present application, the reclining of the backrest and the raising and lowering of the chair are controlled by handles provided on both sides of the chair.

As shown in FIGS. 6 to 9, the handle includes a backrest control handle 1 and a seat cushion control handle 2 respectively attached to the rear of each side of the seat cushion, and generally located under the armrest of the seat cushion. , can adapt to the human body's operating habits and improve the user's experience. Preferably, the backrest control handle 1 is attached to the left side of the seat cushion and the seat cushion control handle 2 is attached to the right side of the seat cushion. In other embodiments, the backrest control handle 1 and the seat cushion control handle 2 may be attached to the same side of the seat cushion, with the backrest control handle 1 being attached to the right side of the seat cushion and the seat cushion control handle 2 being attached to the right side of the seat cushion. It may be installed on the left side of the machine and can be adjusted according to the actual situation.

The backrest control handle 1 is electrically connected to the backrest tilt control device via a first span wire to control the backrest to tilt and return to the upright position. The seat cushion control handle 2 is transmission-connected to the seat cushion lifting control device via the second span wire, and controls the lifting and lowering of the chair seat cushion. Both sides of the seat cushion are provided with grooves, the two handles are installed in the grooves, and the rear end of the handle cooperates with the seat cushion to form a rotation joint. is equipped with a spring reset structure. The span wire includes an inner steel wire and an outer protective cover, the first span wire is detachably connected to the backrest tilt control device, the second span wire is detachably connected to the seat cushion elevation control device, and the first span wire is detachably connected to the seat cushion elevation control device, The tray can be easily removed from the cushion. During use of the handle, when the handle is pulled outward, the steel wire inside the span wire stretches along an arc, controlling the backrest tilt control device and the seat cushion elevation control device to operate. When you release your hand from the handle, the inner steel wire is reset by the elastic force of the spring reset structure, and the handle automatically returns to the groove.

As shown in FIGS. 10 and 11, the backrest lock gear 5 and the back steel plate 4 are both attached to the first fixed shaft 8 of the tray body 3, and both rotate synchronously around the first fixed shaft 8. A backrest return torsion spring 11 is attached to the connection point between the backrest lock gear 5 and the first fixed shaft 8. One end of the backrest locking part 6 away from the backrest locking gear 5 is attached to the second fixed shaft 9 of the tray body 3, and the other end is tightened and connected to the first span wire. It can be rotated in a direction away from the backrest lock gear 5 around the second fixed shaft 9 via a span wire, and a backrest lock is engaged at the connection point between the backrest lock engagement part 6 and the second fixed shaft 9. A return torsion spring 12 is attached. The backrest lock gear 5 is equally provided with a plurality of locking positions, the backrest lock locking part 6 includes an L-shaped locking part, and the L-shaped locking part is engaged with any of the locking positions. The rotation range of the backrest lock gear 5 is 0 to 40 degrees. That is, the backrest angle can be changed between 90 and 130 degrees. In this embodiment, the backrest lock gear 5 is provided with five locking positions, that is, five fixed angles, but in actual application, the number of locking positions here can be adjusted to The reclining angle can be increased or decreased.

In the initial state, the backrest is in a vertical state, the backrest locking part 6 is engaged with the backrest locking gear 5 and fixed, and the chair is maintained in a stable state. When the backrest control handle 1 is pulled, the first span wire pulls the backrest locking part 6, and the backrest locking part 6 is disengaged from the backrest locking gear 5. At this time, when the backrest is reclined artificially and the backrest is tilted to an appropriate angle and the backrest control handle 1 is released, the backrest locking part 6 is automatically moved by the elastic drive of the backrest locking return torsion spring 12. The chair approaches the backrest lock gears 5 and is locked in one of the locking positions to fix the angle and realize reclining and locking of the backrest of the chair. A similar operation is used for the backrest to return from the tilted state to the vertical state, and at this time, the backrest lock gear 5 is automatically rotated by the elastic drive of the backrest return torsion spring 11, and the backrest is driven to return. .

One end of the connection lever 7 is attached to the third fixed shaft 10 of the tray body 3, the other end is tightened and connected to the second span wire, and the connection lever 7 is connected around the third fixed shaft 10 via the second span wire. Can be rotated downward.

In the initial state, the protrusion of the connection lever 7 only touches the upper switch of the pneumatic rod and does not trigger it. When the seat cushion control handle 2 is pulled, the second span wire pulls the connection lever 7 and rotates it downward, the protrusion presses down the upper switch of the air pressure rod, and then when the seat cushion is pushed down artificially, the seat cushion can be achieved. After descending to the appropriate height, the seat cushion control handle 2 can be released, at this time the protrusion of the connection lever 7 will no longer press the upper switch of the pneumatic rod, and the pneumatic rod can be locked to fix the height. can. The raising operation of the seat cushion is also similar to this.

With a simple structure, the present application can realize the tilting and returning of the backrest and the raising and lowering of the seat cushion, greatly reducing the manufacturing cost and increasing the effectiveness and profit. At the same time, it is easy for customers to operate, and just pull the handle to adjust the appropriate angle and height, greatly improving user experience and satisfaction.

<Example 2>
As shown in FIGS. 6 and 7, the chair provided by the present invention employs the drive-by-wire tray described in Embodiment 1, and further includes the seat cushion and the backrest. When the backrest control handle 1 is pulled, the first span wire pulls the backrest locking part 6, and the backrest locking part 6 is disengaged from the backrest locking gear 5. At this time, when the backrest is reclined artificially and the backrest is tilted to an appropriate angle and the backrest control handle 1 is released, the backrest locking part 6 is automatically moved by the elastic drive of the backrest locking return torsion spring 12. The chair approaches the backrest lock gears 5 and is locked in one of the locking positions to fix the angle and realize reclining and locking of the backrest of the chair. When the seat cushion control handle 2 is pulled, the second span wire pulls the connection lever 7 and rotates it downward, the protrusion presses down the upper switch of the air pressure rod, and then when the seat cushion is pushed down artificially, the seat cushion can be achieved. After descending to the appropriate height, the seat cushion control handle 2 can be released, at this time the protrusion of the connection lever 7 will no longer press the upper switch of the pneumatic rod, and the pneumatic rod can be locked to fix the height. can. Simple structure, greatly reduces manufacturing cost, increases effectiveness and profit. At the same time, it is easy for customers to operate, and just pull the handle to adjust the appropriate angle and height, greatly improving user experience and satisfaction.

In the description of this application, "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", The orientation or positional relationship indicated by terms such as "outside" is based on the orientation or positional relationship shown in the drawings, and is merely for the purpose of facilitating and simplifying the description of the present application. It is not intended or implied that the components necessarily have a particular orientation or are constructed or operated in a particular orientation. Therefore, it should not be understood as limiting this application.

Above, specific embodiments of the present invention have been described. It should be noted that the present invention is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims that do not affect the essence of the present invention. I want you to understand. The embodiments of the present application and the features in the embodiments can be arbitrarily combined if they do not contradict each other.

1 Backrest control handle, 2 Seat cushion control handle, 3 Tray body, 4 Back steel plate, 5 Backrest lock gear, 6 Backrest locking part, 7 Connection lever, 8 First fixed shaft, 9 Second fixed shaft, 10 Third Fixed shaft, 11 backrest return torsion spring, 12 backrest locking return torsion spring.

Claims (10)

A drive-by-wire tray comprising a handle, a tray body (3) and a back steel plate (4), wherein the tray body (3) is attached to the bottom of the seat cushion, and the lower end of the back steel plate (4) is attached to the bottom of the seat cushion. movably connected to the tray body (3), the upper end of the back steel plate (4) is tightly connected to the backrest, the tray body (3) is provided with a backrest inclination control device and a seat cushion elevation control device; The two handles are attached to the seat cushion and are transmission-connected to the backrest tilt control device and the seat cushion elevation control device via span wires, respectively;
The backrest inclination control device includes an engaged backrest lock gear (5) and a backrest locking part (6), the backrest locking part (6) is transmission connected to the first span wire, and the backrest locking part (6) is connected to the first span wire. The backrest locking part (6) can be separated from the backrest locking gear (5) via the first span wire, and the backrest locking part (6) can be separated from the backrest locking part (6) of the backrest locking gear (5). the side is tightly connected to the back steel plate (4), and the backrest locking gear (5) and the back steel plate (4) can both rotate synchronously;
The seat cushion elevation control device includes a connection lever (7), the connection lever (7) is transmission connected to a second span wire, a pneumatic rod is attached below the seat cushion, and the connection lever (7) is connected to a second span wire. A drive-by-wire tray having a projection extending downwardly from an intermediate portion of the pneumatic rod, the projection contacting and cooperating with an upper switch of the pneumatic rod. The handle includes a backrest control handle (1) and a seat cushion control handle (2) respectively attached to the rear portions of both sides of the seat cushion, and the backrest control handle (1) is connected to the backrest via the first span wire. The drive-by device according to claim 1, characterized in that the seat cushion control handle (2) is electrically connected to the tilt control device, and the seat cushion control handle (2) is electrically connected to the seat cushion lift control device via the second span wire.・Wire tray. Drive-by-wire according to claim 2, characterized in that the backrest control handle (1) is attached to the left side of the seat cushion and the seat cushion control handle (2) is attached to the right side of the seat cushion. tray. Both sides of the seat cushion are provided with grooves, the two handles are respectively installed in the grooves, and the rear ends of the handles cooperate with the seat cushion to form a rotation joint. The drive-by-wire tray according to claim 1, wherein the rotation joint is provided with a spring reset structure. The backrest lock gear (5) and the back steel plate (4) are both attached to the first fixed axis (8) of the tray body (3), and both are synchronous around the first fixed axis (8). can be rotated,
The drive-by-wire according to claim 1, characterized in that a backrest return torsion spring (11) is attached to a connection point between the backrest lock gear (5) and the first fixed shaft (8). tray. One end of the backrest lock engaging part (6) remote from the backrest lock gear (5) is attached to the second fixed shaft (9) of the tray body (3), and the other end is tightened to the first span wire. connected, the backrest lock engaging part (6) can rotate in a direction away from the backrest lock gear (5) around the second fixed shaft (9) via the first span wire,
2. A backrest locking return torsion spring (12) is installed at a connection point between the backrest locking portion (6) and the second fixed shaft (9). Drive-by-wire tray. The backrest lock gear (5) is equally provided with a plurality of locking positions, the backrest lock locking part (6) includes an L-shaped locking part, and the L-shaped locking part is located at any one of the locking positions. The drive-by-wire tray according to claim 1, wherein the backrest lock gear (5) is engaged in the locking position and has a rotation range of 0 to 40 degrees. One end of the connection lever (7) is attached to the third fixed shaft (10) of the tray body (3), and the other end is tightly connected to the second span wire, and the connection lever (7) The drive-by-wire tray according to claim 1, characterized in that it can pivot downwardly about the third fixed axis (10) via a span wire. The span wire includes an inner steel wire and an outer protective cover, the first span wire is detachably connected to the backrest tilt control device, and the second span wire is detachably connected to the seat cushion elevation control device. The drive-by-wire tray according to claim 1, characterized in that: A chair using the drive-by-wire tray according to any one of claims 1 to 9, further comprising the seat cushion and the backrest.