CN204378533U - A kind of adjustable steering wheel - Google Patents

Abstract

The utility model discloses a kind of adjustable steering wheel, it is characterized in that, comprise fixed wheel, runner, trip, axostylus axostyle and knob, described fixed wheel is cylinder type, its cylindrical shell two ends are solid disk, disc centre has aperture, fixed wheel cylindrical shell offers loose slot, cylinder inboard wall is provided with some draw-in grooves, described runner is columnar structured, its cylindrical shell two ends are solid disk, disc centre is provided with roller bearing, runner cylindrical shell is provided with movable span, described axostylus axostyle is through the aperture at center, fixed wheel two ends and the roller bearing of roller centre, runner is coaxially fixed in fixed wheel cylindrical shell, described trip comprises rotor, spring, latch and cranking arm, described knob is arranged on axostylus axostyle top.The utility model has the advantage of: structure is simple, reliability and durability, is applicable to the field such as furniture and vehicle-mounted accessory.

Description

An adjustable steering wheel

technical field

The utility model relates to the field of office furniture accessories, in particular to an adjustable direction wheel.

Background technique

Chair is a kind of commonly used furniture, which can be used in many occasions, such as home, office, conference room, outdoor, classroom, etc. The design improvement of general chairs mainly focuses on increasing comfort and improving appearance, etc. The improvement of the function is relatively little, which makes people slightly inconvenient when using it, especially in some occasions such as study and meeting, when it is necessary to record or place items.

Utility model content

The utility model proposes an adjustable direction wheel fitting for the above technical problems. The direction wheel includes a fixed wheel and a runner, which can adjust the direction of the runner and fix it. It is matched with a movable bracket with a writing board and installed on the On the chair, the height and angle of the writing board can be effectively adjusted, which is convenient for people to use.

The utility model adopts the following technical solutions to solve the above-mentioned technical problems: an adjustable direction wheel, which is characterized in that it includes a fixed wheel, a runner, a tenon, a shaft and a knob, and the fixed wheel is a cylindrical structure, and its barrel The two ends of the body are solid discs, and there is a small hole in the center of the disc. There are movable grooves on the cylinder of the fixed wheel, and a number of slots on the inner wall of the cylinder. The runner is a cylindrical structure. The end is a solid disc, and the center of the disc is equipped with a roller shaft. There are movable holes on the cylinder body of the runner. The shaft is fixed in the cylinder of the fixed wheel, and the tenon includes a rotor, a spring, a pin and a crank arm, wherein the rotor is sleeved in the middle of the shaft, one end of which is connected to the inner wall of the runner through a spring, and the other end is connected to the inner wall of the runner. The crank arm is connected, the pin is installed in the movable hole on the runner cylinder, one end of which is connected to the crank arm, and the other end protrudes from the movable hole, and is stuck in the fixed wheel cylinder In the card slot of the wall, the knob is installed on the top of the shaft.

Optimally, the connection between the runner and the roller, between the roller and the shaft, between the rotor and the shaft, and between the knob and the shaft is interference installation, and the two ends of the crank arm are connected to the rotor and the shaft. The bolts are connected by hinges.

Optimally, the movable groove provided on the cylinder of the fixed wheel is located in the upper half of the cylinder, its shape is rectangular, its side is parallel to the discs at both ends of the fixed wheel, and its length is 1/2 of the outer circumference of the cylinder .

Optimally, the slots provided on the inner wall of the fixed wheel cylinder are located in the lower half of the cylinder, and are symmetrically distributed on both sides of the inner wall of the cylinder, the number of which is 4-8.

The utility model has the advantages that the steering wheel has a simple structure, is reliable and durable, and can adjust and fix the direction of the running wheel at a large angle. It is matched with a movable bracket with a writing board and installed on a chair, which can effectively adjust the direction of the writing board. The height and angle are convenient for people to use.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the structural schematic diagram of movable support of the utility model embodiment;

Fig. 3 is a structural schematic diagram of the loose-leaf assembly of the embodiment of the utility model;

Fig. 4 is the appearance schematic diagram of the utility model;

Fig. 5 is a schematic diagram of the internal structure of the utility model when it is stationary;

Fig. 6 is a schematic diagram of the internal structure of the utility model when it rotates.

Detailed ways

As shown in Fig. 1, Fig. 2 and Fig. 3 below, a chair with a writing board includes a backrest 1, a cushion 2, bilateral armrests 3, a base 4, a writing board 5, and a movable support 6, which consists of The fixed rod 7, the movable rod 8, the direction wheel 9 and the loose-leaf assembly 10 are composed of, wherein the fixed rod 7 is vertically fixed on one side of the chair, its bottom end is connected with the seat cushion 2, and its upper end is connected with the described armrest 3 , the direction wheel 9 includes a fixed wheel 11, a rotating wheel 12, a tenon 13, a shaft 14 and a knob 20, the movable rod 8 is an L-shaped member, and the hinge assembly 10 is a T-shaped member, wherein the The fixed wheel 11 is connected to the top of the fixed rod 7, the runner 12 is connected to the long rod port of the movable rod 8, and the short rod port of the movable rod 8 is connected to the bottom end of the vertical rod of the hinge assembly 10. Connected, several loose leaves 21 are installed on the top surface of the crossbar of the loose-leaf assembly 10, and are connected with the center of the bottom surface of the writing board 5.

As shown in Figure 4 and Figure 5, the fixed wheel 11 is a cylindrical structure, the two ends of the cylinder are solid discs, the center of the disc has a small hole, and the cylinder of the fixed wheel 11 is provided with a movable groove. The inner wall of the cylinder is provided with several draw-in grooves perpendicular to the direction of the disk. The runner 12 is a cylindrical structure, and the two ends of the cylinder are solid disks. The center of the disk is equipped with a roller 15. The cylinder body is provided with a movable hole, and the shaft rod 14 passes through the small hole at the center of both ends of the fixed wheel 11 and the roller shaft 15 at the center of the runner 12, and the runner 12 is coaxially fixed in the cylinder of the fixed wheel 11, so that The tenon 13 includes a rotor 16, a crank arm 17, a latch 18 and a spring 19, wherein the rotor 16 is sleeved in the middle of the shaft 14, and one end thereof is connected to the inner wall of the runner 12 through a spring 19, and the other end thereof One end is connected with the crank arm 17, and the latch 18 is installed in the movable hole on the cylinder body of the runner 12, and one end is connected with the curved arm 17, and the other end stretches out from the movable hole, and is stuck in the movable hole. In the slot on the inner wall of the fixed wheel 11 , the knob 20 is mounted on the top of the shaft 14 .

Between the said runner 12 and the roller 15, between the roller 15 and the shaft 14, between the tenon 13 and the shaft 14, between the knob 20 and the shaft 14 are interference connections, and the crank arm 17 both ends are hingedly connected between the rotor 16 and the latch 18.

When it needs to be used, extend the movable rod 8, and turn the knob 20 on the direction wheel 9, as shown in Figure 6, the rotor 16 on the tenon 13 starts to rotate, one end drives the spring 19 to stretch, and the other end drives the crank arm 17 and the latch 18 move back along the movable hole, and the latch 18 moves out from the slot on the inner wall of the fixed wheel 11, so that the runner 12 and the movable rod 8 can rotate axially, and the movable rod 8 is rotated from the back of the chair back 1 To the appropriate angle in front of the chair, loosen the knob 20, under the force of the spring 19, the rotor 16 rotates, driving the crank arm 17 and the latch 18 to move forward, the front end of the latch 18 protrudes from the movable hole, and snaps into the fixed wheel 11 In the draw-in slot on the inner wall of the barrel, the runner 12 and the moving wheel 11 are engaged with each other to fix the movable bracket, and then the writing board 5 erected on the outer side of the loose-leaf assembly 10 is turned horizontally so that it rests on the T-shaped loose-leaf On the crossbar of the assembly 10, it can be used. In addition, the different needs of users can also be met by adjusting the length and angle of the movable rod.

When not in use, you can operate in reverse according to the operation steps used, that is, turn the writing board 5 over first, then turn the knob 20, so that the movable rod 8 can rotate axially, and turn the movable rod 8 to the chair back 1 At the rear, unclamp the knob 20, the movable rod 8 is stuck, and then the movable rod 8 is contracted, so that the writing board 5 and the backrest 1 rear portion are close to get final product, without affecting the normal use of the chair.

The product has simple structure, convenient use and is suitable for various occasions.

The above descriptions are only preferred embodiments of the invention, and are not intended to limit the invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the invention shall be included in this invention. within the protection scope of inventions and creations.

Claims (4)

1. An adjustable steering wheel, characterized in that it comprises a fixed wheel, a runner, a tenon, a shaft and a knob, the fixed wheel is a cylindrical structure, and the two ends of the cylinder are solid discs, and the discs There is a small hole in the center, and there are movable grooves on the cylinder of the fixed wheel. There are several slots on the inner wall of the cylinder. The runner is a cylindrical structure, and the two ends of the cylinder are solid discs, and the center of the disc is installed. There are rollers, and movable holes are arranged on the cylinder body of the runner, and the shaft passes through the small holes at the center of both ends of the fixed wheel and the roller in the center of the runner, and the runner is coaxially fixed in the cylinder of the fixed wheel. The tenon includes a rotor, a spring, a pin and a crank arm, wherein the rotor is sleeved in the middle of the shaft, one end of which is connected to the inner wall of the runner through a spring, and the other end is connected to the crank arm, and the pin is installed In the movable hole on the runner cylinder, one end is connected to the crank arm, and the other end protrudes from the movable hole, and is stuck in the slot on the inner wall of the fixed wheel cylinder. The knob is installed at the top of the shaft. 2. The adjustable steering wheel according to claim 1, characterized in that, between the said wheel and the roller, between the roller and the shaft, between the rotor and the shaft, between the knob and the shaft For the interference installation and connection, the two ends of the crank arm, the rotor and the latch are all hinge installation connections. 3. The adjustable steering wheel according to claim 1, characterized in that, the movable groove provided on the cylinder of the fixed wheel is located in the upper half of the cylinder, and its shape is rectangular, and its side is adjacent to the fixed wheel. The discs at the ends are parallel, and the length is 1/2 of the outer circumference of the cylinder. 4. The adjustable steering wheel according to claim 1, characterized in that, the slots provided on the inner wall of the fixed wheel cylinder are located in the lower half of the cylinder and are symmetrically distributed on both sides of the inner wall of the cylinder. The quantity is 4-8 pieces.