KR200302990Y1 - Regulation device of desk and chair for student - Google Patents

Abstract

The present invention relates to a height adjustment device that can easily adjust the height of the student desk and the stool, more specifically, the stem insertion hole (2) is inserted into the lower column 18 to the body (1) of the height adjustment device Forming, and forming the locking jaw (3) so that the upper end of the lower support (18) is caught on the upper end of the support insertion hole (2), and on one side of the main body (1) to form a seating groove (4), A through hole 5 is formed between the seating recess 4 and the support insertion hole 2, and the seating recess 4 has a catching rod 7 and a spring 9 protruding from the seating protrusion 8. In the height adjustment device of the book and the stool which fixed the cover 6 after installation, the push button 11 is installed in the upper part of the said main body 1, and the stopper 12 and the lower part of the push button 11 are installed. The coil spring 15 is installed, but through the hole 14 in the center of the stopper 12 to allow the catching rod 7 to pass through, and the inside of the main body 1 The guide protrusion 13 is formed to allow the stopper 12 to move up and down, and the groove 16 is formed at one side of the engaging rod 7 so that the stopper 12 is caught by the desk and the bench. Not only to easily adjust the height, and to install the locking bar inclined to prevent the locking rod from artificially reversing.

Description

Height adjustment device for student desk and stool {Regulation device of desk and chair for student}

The present invention relates to a height adjustment device that can easily adjust the height of the student desk and the stool, and more specifically, formed by separating the struts formed on both sides of the student desk and the stool up and down, the height adjustment device is the post In the height adjustment device to adjust the height of the desk and the stool to be installed on, by the stopper on the locking bar of the height adjustment device, not only to easily adjust the height of the desk and the stool, but also to install the hanger inclined It relates to preventing the catch rod from artificially reversing.

Generally, books and stools used by students in school are produced in three different sizes based on the average height of each grade, so students with average height have great inconvenience in using books and stools. There were no problems, however, in the case of tall or small students, it was inconvenient to use books and stools.

Therefore, there was a patent application No. 752 of 2000 filed by the applicant of the present invention in order to eliminate the inconvenience as described above, but it was necessary to adjust the height by adjusting the height of the book and stool because it had to pull the catch bar Was difficult.

In other words, the height adjustment device of the book and the stool is divided into the upper and lower holdings of the book and the stool installed on both sides of the stool so that the upper holding is inserted into the lower holding so that the height is adjusted by the height adjusting device. In the height adjustment device of the book, the stool of the stool, forming a support insertion hole into which the lower column is inserted into the main body of the height adjusting device, and forming a latching jaw so that the upper end of the lower support is caught on the upper end of the support insertion hole, One side of the mounting groove is formed, but the through hole is formed between the seating groove and the support insertion hole, the seating groove was a structure in which the cover is fixed after installing the locking bar and the spring protruding the locking projection.

According to the conventional design as described above, when the main body is coupled to the upper end of the lower column by pulling the handle back and the upper bar is inserted into the lower column, installation of the height adjusting device is completed.

Then, to adjust the height of the book and the stool, pull the handle to retract the catch bar, and then raise or lower the upper brace and release the handle. Then, the spring is inserted into the upper hole and the lower brace by the elastic force of the spring. Because it was possible to adjust the height of the stool, it was difficult to adjust the height alone.

And because the rod is installed on the upper and lower posts at right angles and is installed horizontally with the ground, when the load is repeatedly acted on the upper column, the rod is pushed out little by little and the catch rod is sometimes separated from the upper and lower holding columns. Occurred.

In other words, the retaining rod supporting the spring is acting on the coupling hole side of the upper and lower holders by the spring force of the spring, but if the impact load is repeatedly applied to the upper holder, the upper holder retreats the retaining rod little by little. The catch rod is separated from the coupling hole and the upper column is lowered.

The present invention was created in order to eliminate the above problems, by providing a stopper installed on the engaging rod installed inside the body of the height adjustment device, provides a book, a height adjustment device for easy adjustment of the height of the book, the stool. There is a purpose of devising.

Still another object of the present invention is to provide a height adjusting device for a book and a stool which can prevent the upper rod from descending randomly by reversing the locking bar by inclining the locking bar of the height adjusting device.

1 is a perspective view of a desk to which the present invention is applied.

2 is a perspective view of a stool to which the present invention is applied.

3 is a cross-sectional view showing the main portion of the present invention.

4 is an operational state diagram of the present invention,

(A) is a cross-sectional view showing the state before the adjustment,

(B) is sectional drawing which shows the state that adjustment is completed.

Figure 5 is a cross-sectional view showing another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

DESCRIPTION OF SYMBOLS 1 Main body 2 Shoring insertion hole 5: Through hole

6: cover 7: hook 9: spring

11 push button 12 stopper 15 coil spring

16: groove 17: upper holding 18: lower holding

A feature of the present invention for achieving the above object is to form a support insertion hole into which the lower support is inserted into the main body of the height adjustment device, and to form a locking jaw to take the upper end of the lower support to the upper end of the support insertion hole, On one side, a seating groove is formed, but a through hole is formed between the seating groove and the support insertion hole, and the seating groove is installed on the height adjustment device of a book and a stool fixed by a cover after installing a catching rod and a spring protruding the catching protrusion. In this case, a push button is installed on the upper part of the main body, and a stopper and a coil spring are installed on the lower part of the push button, and through the through hole in the center of the stopper to allow the locking rod to pass, and guide protrusions inside the main body. Formed to stop the stopper up and down, and to form a groove on one side of the locking rod to be caught by the stopper, Referring to the configuration of the present invention in detail based on the accompanying drawings as follows.

3 is a cross-sectional view showing the main portion of the present invention, 1 is the main body, 2 is a support insertion hole, 3 is a locking jaw, 4 is a seating groove, 5 is a through hole, 6 is a cover, 7 is a locking rod, 9 is a spring, 11 is a pushbutton, 12 is a stopper, 15 is a coil spring, 16 is a recess, 17 is an upper column, and 18 is a lower column.

As shown in the figure, the pillars installed on both sides of the book and the stool are separated into the upper column 17 and the lower column 18 so that the upper column 17 is inserted into the lower column 18 to move up and down. In the height adjustment device of the book, the stool to be adjusted by the height adjustment device, forming a support insertion hole (2) into which the lower column (18) is inserted into the main body (1) of the height adjustment device, The locking jaw (3) is formed on the upper end of the insertion hole (2) so that the upper end of the lower support (18) is formed, and one side of the main body (1) forms a seating groove (4), but the seating groove (4) And a through hole 5 is formed between the support insertion hole 2 and the seating groove 4. A locking bar 7 and a spring 9 having protrusions 8 protruding and grooves 16 formed therein. Fix the cover (6) after installation.

At this time, one end of the hook rod 7 is installed to be slightly inclined downward, one end of the hook rod 7 is provided with a handle 10 so as to pull the hook rod 7, the upper support 17 ) Forms a plurality of coupling holes 19 at regular intervals, and one coupling hole 19 is formed in the lower support 18.

One side of the locking rod 7 is inserted into the coupling hole 19 to protrude in the direction of the support insertion hole 2, and a spring 9 is inserted into the other side, and one end of the spring 9 is a locking protrusion ( 8) and the other end to the side wall of the seating groove (4).

In addition, the push button 11 is installed on the upper portion of the main body 1, and the stopper 12 and the coil spring 15 are sequentially installed on the lower portion of the push button 11, the stopper 12 of the The through hole 14 is drilled in the center to allow the catching rod 7 to reciprocate, and a guide protrusion 13 is formed on the inner sidewall of the main body 1 to guide the stopper 12 up and down. Allow them to play a role.

The present invention as described above, as shown in (a) of FIG. 4, after pulling the handle 10 to engage the main body 1 to the upper end of the lower column 18 in the retracted state (7) When the upper column 17 is inserted into the lower column 18, the installation of the height adjusting device is completed.

Then, to adjust the height of the book and the stool, pull the handle 10 as shown in Fig. 4 (a) and retract the catch bar (7), the stopper 12 is raised by the coal power of the coil spring (15) The catch rod 7 is held in the recess 16 of the catch rod 7 to maintain the retracted state.

When the catching rod 7 retreats, the upper support 17 is raised or lowered to adjust the height appropriately, and then the push button 11 is pressed to stop the stopper 12 and the stopper 12 is recessed. At the moment of deviating), the catching rod 7 advances to the coupling hole 19 by the coalescing force of the spring 9 so that the catching rod 7 is the upper support 17 and the lower portion as shown in FIG. It is inserted into the coupling hole 19 of the support 18, it is possible to adjust the height of the book, the stool.

Therefore, it is possible to easily adjust the height of books and stools.

And since the locking rod 7 is installed to be inclined downward, the force to pull the locking rod 7 to the inside of the upper support 17 when the load of the upper support 17 is repeatedly applied to the locking rod 7. It is to act so that the locking rod (7) is not retracted so that the locking rod is reversed to prevent the upper column from falling arbitrarily.

Figure 5 is a cross-sectional view showing another embodiment of the present invention in Figures 3 to 4, the spring 9 is installed on the rear side of the catching rod 7 so that the catching rod 7 is upper and lower column 17, 18, the stop rod 12 is not caught in the stopper 12, and the stop rod 12 is caught in the stopper 12 when the stop rod 7 is pulled out of the upper and lower column holders 17 and 18 to adjust the height. Although 7) is shown in the hanging state, in FIG. 5, a spring 9 is installed in front of the catching rod 7 as opposed to FIGS. 3 to 4, and a push button 11 and a stopper 12 are provided at a rear side thereof. When the engaging rod 7 is inserted into the upper and lower column holders 17 and 18 (height adjustment is completed), the engaging rod 7 is distanced to the stopper 12, and the engaging rod is It is shown that the locking rod 7 is not limited by the stopper 12 when the lower column 17, 18 is separated (when adjusting the height).

That is, FIG. 5 shows that the operating state is reversed from that of FIGS. 3 and 4 by installing the position of the spring 9 installed on the engaging rod 7 in the forward direction.

The present invention as described above can be easily adjusted the height adjustment of the book, the stool by installing the stopper on the locking rod (7) installed inside the main body (1) of the height adjustment device, the locking rod (7) of the height adjustment device By installing it inclined, the locking rod 7 is reversed to have an effect that can prevent the upper column from falling arbitrarily.

Claims (2)

The main support 1 of the height adjusting device forms a support insertion hole 2 into which the lower support 18 is inserted, and the locking jaw so that the upper end of the lower support 18 is caught on the upper end of the support insertion hole 2. 3) and a seating groove 4 is formed at one side of the main body 1, but a through hole 5 is formed between the seating groove 4 and the support insertion hole 2, and the seating groove The height adjustment device of the book, the stool of which the cover 6 was fixed after installing the locking rod 7 and the spring 9 which protruded the locking protrusion 8 protruded in the upper part of the said main body 1, The push button 11 is installed, and the stopper 12 and the coil spring 15 are installed at the lower part of the push button 11, and the through-hole 14 is drilled in the center of the stopper 12 to engage the rod. (7) to pass through, the guide protrusion 13 is formed in the inside of the main body 1 so that the stopper 12 up and down, and the groove 16 is formed on one side of the locking rod (7) The stopper 12 Student's book, height adjustment device characterized in that the hanger. The height adjustment device for a student book, stool of claim 1, characterized in that the hooking rod (7) has one end inclined slightly downward.