KR200365342Y1 - Control height of desk and chair - Google Patents

Abstract

The present invention relates to a height adjustment device of a book and a stool using a rack gear and a pinion gear. More specifically, the height of a desk or a chair can be adjusted freely, and a leg fixed to a fixed height is firmly fixed and the user's body In the height adjustment device on the bookshelf that can adjust the height freely according to the condition, the adjustment device forms a fixing bracket having a rack gear and pinion gear on one side of the housing which is fixed integrally with the fixed holding rod, One side forms a moving pin, and the rack gear can be automatically inserted or separated from the coupling groove formed in the movable support rod while rotating by the engagement of the pinion gear rotated by the operation of the operating lever students. This simple feature allows you to adjust the height of your desk to fit your body shape. .

Description

Height control device of book and stool {Control height of desk and chair}

The present invention relates to a height adjustment device on a desk using a rack gear and a pinion gear. More specifically, the height of a desk or a chair can be freely adjusted, and a leg fixed to a fixed height is firmly fixed and the user's physical condition In the height adjustment device of the book and the stool that can be freely adjusted according to the height, the adjusting device forms a fixing bracket having a rack pinion gear on one side of the housing which is fixed integrally with the fixed holding rod, one side of the rack gear Is a moving pin, wherein the rack gear is rotated by the engagement of the pinion gear rotated by the operation of the operation lever, and the movable pin can be automatically inserted into or removed from the coupling groove formed on the movable support rod. It relates to a height adjusting device.

In general, desks and chairs are widely used and supplied to schools and academies, and these desks and chairs are mostly used by students of teenagers who are growing very fast.

In addition, the books and stool that students use in school are made of the same size based on the average body type by grade, and when they sit and use them for a long time, it is pointed out that the students have many health problems such as spinal abnormalities.

On the other hand, there are many books and stool height adjusting device developed as a means to solve this problem, but this requires a separate tool to adjust the height of the books and stool, or students themselves to adjust the height of the stool In the situation that the control device is made of a complex structure there are many problems in using.

In addition, there is a "student desk and stool height adjustment device" of the Utility Model Registration Application No. 20-2001-0015868 filed as a means for solving the above problems, but it forms a support insertion hole into which the lower column is inserted into the body However, the locking jaw is formed so that the upper end of the lower support is caught on the upper end of the support insertion hole, and a seating groove is formed on one side of the main body, and a through hole is formed between the seating groove and the support insertion hole, and the seating groove. After installing the hanging bar and the spring which protrude the locking projection, the height adjustment device which is covered with bolts is fixed to the lower column installed on both sides of the book holder, and the upper column is inserted into the lower column so that it can be moved up and down. In the height adjustment apparatus of a stool, it is comprised so that the stopping means may be provided in the said latching rod.

On the other hand, in the situation where the child using the book and the stool assembled as described above should adjust the height, the catching bar accommodated in the seating groove should be pulled backward.

At this time, since the restoring rod has to be returned to its original state by the elastic force of the spring, the elastic force must be very large, and a very large force is required in a situation in which a separate handle formed on the engaging rod must be pulled out.

That is, after the young students pull the handle, the movable holding rod is freely adjusted up and down, and then the moving holding rod is fixed when the handle fixed integrally with the locking rod is set again.

Accordingly, a dangerous situation in which a finger is caught by the catching rod when operating the catching rod may be generated along with the disadvantage that a lot of power is consumed when the young students who are the users of the bookstore try to adjust the height of the catching.

The present invention has been devised to solve the conventional problems as described above, as well as more secure and simple to adjust the height of the desk and chair, as well as students to operate the operating lever that can secure the movable holding rods The purpose is to make it possible.

In order to achieve the above object to form a fixing bracket having a rack pinion gear on one side of the housing which is fixed integrally with the fixed holding rod, one side of the rack gear to form a moving pin, the rack gear is the operation of the operating lever It is to provide a height-adjusting device on a stool that can be automatically inserted into or removed from the engaging groove formed in the movable support rod while rotating by the engagement of the pinion gear rotated by.

1 is a perspective view of a state in which the main portion of the present invention is assembled

Figure 2 (a) (b) is a cross-sectional view of the state in which the main portion of the present invention operates

3 is a front view of a state in which the main portion of the present invention is attached to the desk

Explanation of symbols on the main parts of the drawings

10. Retaining Bracket 11. Operation Lever

12. Pinion Gear 13. Rack Gear

14. Moving Pin 15. Fixture

16.Spring 17.Moving Rod

18. Fixed cap 20. Fixed holding rod

21. Housing 22. Locking Pin

23. Coupling groove 24. Recessed groove

25. Thread

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a state in which the main part of the present invention is assembled, and FIG. 2 (a) (b) is a cross-sectional view of a state in which the main part of the present invention operates, and FIG. 3 is a state in which the main part of the present invention is attached to a desk Front view.

First, as shown in FIGS. 1 and 2 (a) and (b), the fixed holding rod 20 is inserted into and fixed in the housing 21.

Meanwhile, a fixing bracket 10 is formed at one side of the housing 21, and the pinion gear 12 meshing with the rack gear 13 having the movable pin 14 is engaged inside the fixing bracket 10. It is formed.

At this time, the end of the rack gear 13 to form a fixture (15) that can be fixed to the spring 16 is inserted.

Then, the spring 16 inserted into the fixture 15 is configured to support the rack gear 13 portion engaged with the pinion gear 12.

In addition, the pinion gear 12 is coupled to the fixing pin 22, and the fixing pin 22 is configured to be assembled to the fixing bracket 10, and one side of the pinion gear 12 has an operating lever 11 To form.

That is, the rack gear 13 having the movable pin 14 because the operating lever 11 integrally formed with the pinion gear 12 assembled to the fixing pin 22 is rotated as shown in FIG. Part and interlocking with each other.

On the other hand, the movable pin 14 formed on one side of the rack gear 13 is configured to be inserted into or detached from the coupling support 23 of the movable support rod 17 and the fixed support rod 20 assembled in the housing 21. do.

In addition, the movable support rod 17 is inserted into the threaded portion 25 and the recessed groove 24 formed on the upper side of the housing 21, and is fixed by the fixing cap 18.

At this time, it is natural that the recessed groove 24 formed in the threaded portion 25 has a certain amount of play depending on the diameter of the movable support rod 17.

As a result, the movable holding rod 17 coupled to the lower portion of the desk is the movable pin 14 formed integrally with the rack gear 13 in the operating state up and down the movable holding rod 170 and the fixed holding rod 20 Inserted or separated into the coupling groove 23 formed in the configured to be able to freely adjust the height of the movable holding rod (17).

Therefore, the movable holding rod 17 formed at the bottom of the desk is to be maintained in a fixed state integrally with the fixed holding rod (20).

Referring to the operation and effects of the present invention made in the above configuration in detail as follows.

First, the height adjusting device bracket 10 of the book and the stool according to the present invention is formed in the housing 21 formed integrally with the fixed holding rod 20.

At this time, there is a part of the pinion gear 12 that is integrally assembled with the fixing pin 22 in the fixing bracket 10, the operation lever 11 for operating the pinion gear 12 is formed.

That is, the pinion gear 12 is rotated about the fixing pin 22 in a situation in which the operating lever 11 is operated left and right.

In addition, the rack gear 13 meshed with the pinion gear 12 has a function of interlocking.

On the other hand, one side of the rack gear 13 that is interlocked by the operation of the operating lever 11 can be inserted into or removed from the coupling groove 23 formed in the fixed holding rod 20 fixed inside the housing 21. Fins 14 are formed to operate.

That is, the moving pin 14 is accommodated in the housing 21 to block the movement of the moving holding rod 17 while penetrating the coupling groove 23 formed in the moving holding rod 17 operating up and down. .

In addition, when the moving pin 14 inserted into the coupling groove 23 is returned to its original position, when the operating lever 11 formed on the pinion gear 12 is operated inward as shown in FIG. 14) The part is simply separated from the coupling groove (23).

At this time, the spring 16 inserted into the fastener 15 on one side of the rack gear 13 is to have a predetermined elasticity while the compression action.

Then, when the user changes the position of the movable support rod 17 to adjust the height of the book and the stool, and then operates the operating lever 11 formed on the pinion gear 12 to the outside as shown in FIG. Due to the elastic action of the spring 16 inserted into the 15 and the engagement action of the pinion gear 12, the moving pin 14 moves forward while the coupling groove 23 formed in the movable holding rod 17 and the fixed holding rod 20. Because it is inserted into the movable holding rod 17 can be secured simply.

In addition, in the case of the movable holding rod 17 having a different diameter, the recessed groove 24 of the threaded portion 25 formed on the upper side of the housing 21 may be widened or narrowed to effectively hold the movable holding rod 17. have.

As described above, the movable pin formed integrally with the rack gear by operating the operation lever of the pinion gear engaged with the rack gear is capable of freely operating the movable support rod while moving forward and backward.

The present invention described above is possible to those skilled in the art to which the present invention belongs to various modifications and changes can be made within the scope without departing from the technical spirit of the present invention in the foregoing embodiments and the accompanying drawings. It is not limited.

The book-and-stool height adjusting device of the present invention configured as described above is interlocked with the meshing of the rack gear and the pinion gear, and the fixing pin fixed to the movable holding rod is fixed by the operation of the operation lever integrated with the pinion gear. It can be safely operated so that students as users can simply adjust the height of the desk to fit the body type.

In addition, once fixed, the external shape is firmly maintained without shaking, even when the external shock is frequently shaken, thereby improving the convenience of the desk and chair.

Claims (3)

In the coupling groove of the movable support rod which moves up and down while being inserted into the inside of the fixed support rod used for adjusting the height of the bookshelf in the adjusting device that can adjust the height of the bookshelf while the moving pin is automatically inserted or removed, A fixing bracket having a rack gear and a pinion gear is formed on one side of the housing fixedly integrated with the fixed support rod, and one side of the rack gear forms a moving pin and the rack gear is rotated by the operation of the operation lever. Height adjustment device of the book and the stool, characterized in that configured to be automatically inserted or separated in the engaging groove formed in the movable support rod while interlocking with the engagement of the pinion gear The method of claim 1, Height adjustment device of the book and the stool, characterized in that configured to form a fixture that can be fixed by inserting a spring at the end of the rack gear The method of claim 1, The height adjustment device of the book and the stool on the upper side of the housing is formed so as to form a screw portion having a recess groove to fix the movable holding rods of different diameters