KR200186786Y1 - Structure of controlling the accessory parts' height for chair - Google Patents

Abstract

The present invention relates to a height adjustment structure of a fastening member for a chair, such as a head rest or an arm rest, the height adjusting structure of the present invention is composed of a fastening frame which is an assembly and the height adjustment part of the binding member and a coupler fixing the same.

The fastening frame of the present invention consists of two rods in parallel and close to each other attached to the lower end of the head rest or arm rest body directly supporting the head or arm.

In addition, the coupler, which is hollow, has an insertion hole of a fastening frame in the cross section, and is composed of a coupler body and a fixing knob in which an inlet of a fixing knob and an assembly hole for screwing together with a screw part of a fixing knob are formed on the front and rear surfaces, respectively. The knob is formed in the order of the handle, the conical fixing and the threading.

The height adjustment structure of the fastening member for the chair of the present invention configured as described above is tightened while screwing the screw of the fixing knob and the assembly of the rear of the coupler through the inlet of the front of the coupler body, the conical fixed portion of the fixing knob It moves from the front to the rear and pushes in between the two rods of the fastening frame, and the fixing knob of the fixing knob is conical to increase the diameter of the circumferential surface as it goes from the screw portion to the handle direction. The fastening member is fixed by being in close contact with the left and right inner walls of the sphere body.

The height adjustment structure of the fastening member for the chair of the present invention does not need to form the height adjustment grooves on the two rod surfaces of the fastening frame, which can lower the cost of producing the fastening frame, and also has the advantage of improving productivity, and the headrest. Fine adjustment of the height of the arm rest is also expected to reduce the fatigue of the person using the chair.

Description

Structure of controlling the accessory parts' height for chair}

The present invention relates to a height adjustment structure of a fastening member for a chair, such as a head rest or an arm rest, and more specifically, a coupling integrally formed with or separately attached to a seat plate, which is a backrest or a seating part of a chair. The lower fastening frame of the fastening member inserted and mounted in the sphere is manufactured in the form of two rods with narrow and parallel spacing, and inserted into the coupler, and after adjusting the height of the fastening member, The fixing portion is inserted into the lower fastening frame perpendicularly from the outside through an inlet of the front of the coupling member body, and the threaded portion of the fixing knob which passes between two parallel rods of the lower fastening frame is fixed to the fixing knob inlet. Conical fixation with no spigot between fixing knob handle and screw thread, screwed into female threaded assembly on the back of the fitting body against the The fur face generates a force that attempts to extend between the two parallel rods that make up the fastening frame, which forces the two rods of the fastening frame into the left and right side walls in the left and right spaces within the coupler body that are divided by the fixing knob. And a height adjusting structure of the binding member for chairs, which is brought into close contact with and fixed to the fixed part tapered surface.

In general, there are two types of fastening members, such as head rests and arm rests, which are attached to the chair. The head rests are completely fixed and the head rests move in both directions. It is subdivided into two types, which can be adjusted in angle and height. In the case of arm rests, almost fixed type is used.

For fixed arm rests or head rests, the height of the arm rests and head restraints cannot be adjusted depending on the position of the person's sitting height and arm, which is inconvenient and reasonable for use by many different heights or for young people in growth. Not

And, in the case of the prefabricated headrest is formed integrally on the back of the chair or inserted into the coupling body attached separately to be located in the back of the backrest, one-rod frame according to the headrest fastening frame assembled by the fixing knob It can be divided into two-loaded frame.

1 is an exploded perspective view of the two-rod frame head restraint, and FIG.

As shown, the two-rod frame is a type commonly used in automobile seats, and the fastening frame 11 of the headrest in which the height adjusting grooves 14 at regular intervals are formed along the outer circumferential surface in the longitudinal direction. The fastening frame 11 of the fastening frame 11 is assembled to the spring back clasp 13 which is assembled into the seat back through the insertion hole 12 formed on the upper end surface of the seat back 15 and penetrated into the inner surface from the outer peripheral surface of the insertion hole 12. As the height adjusting groove 14 is caught, the height of the headrest can be adjusted.

The height-adjusting groove 14 of the two-rod frame may be formed only in one of the two rods 11A of the fastening frame. In this case, the head rest portion of the rod side of the rod side, which is not fixed because the head rest is incompletely fixed, may be formed. There is a problem that can flow into.

The disadvantage of the two-rod frame is that the height adjustment grooves 14 must be formed on the surface of the rod 11A of the fastening frame 11 so that the manufacturing cost of the head rest is increased and productivity is reduced, as well as the adjustable head rest. The height of the is not continuous and can not only be an intermittent cascade, it is impossible to finely adjust the height.

In addition, the one-rod frame also forms a groove 22 on the surface of the rod 21, and rotates the handle 23A of the height adjusting fixing knob 23, the bolt-shaped clasp 23B attached to the center of the handle To penetrate into the groove 22 of the rod through the coupler body 24 while screwing into the inlet 24A where the inner circumferential surface of the through hole penetrates from the outer surface of the coupler 20 body 24 to the inner surface of the through hole. It is a structure.

The one-rod frame also has the disadvantage of requiring a separate process for processing the groove on the rod surface in the same way as the two-rod frame, there is a problem that it is not easy to match the groove 22 and the clasp 23B.

In addition, the head rest may be fixed by tightening the rod only by the compression force of the latch that presses the rod surface by the rotation of the fixing knob knob without forming a groove in the rod surface. Therefore, the cross-sectional area of the rod should be larger than the two-rod frame to increase the rigidity of the rod.

Otherwise, if the cross-sectional area of the one-rod frame rod is similar to that of the two-rod frame rod, if the external force is applied to the head rest due to the lack of rigidity of the rod, the movement of the head restraint frame becomes large, and in severe cases, the deformation of the frame Can cause.

The height adjustment method of the non-fixed prefabricated headrest has a number of methods in addition to the above, but the structure is complicated, which leads to an increase in manufacturing cost and lowers the productivity, in particular, it is difficult to apply to a general chair.

Therefore, the present invention has been devised to improve the general problems raised in the height adjustment structure of the conventional fastening member, and as described above, the structure is simple and fine without raising the manufacturing cost of the fastening member. An object of the present invention is to provide a height adjusting structure of a fastening member for a chair that is adjustable and easy.

1 is an exploded perspective view of a conventional two-rod frame headrest.

Figure 2 is a perspective view of the conventional one-rod frame head restraint.

Figure 3 is a cross-sectional view of the fixing portion of the conventional one-rod frame head rest.

Figure 4 is an exploded perspective view of the head rest according to the embodiment of the present invention.

5 is a cross-sectional view of the fixing part of the head rest according to the embodiment of the present invention.

Figure 6 is an exploded perspective view of the arm rest according to the embodiment of the present invention.

((Explanation of symbols for main part of drawing))

11,40B. Tightening Frame 13. Spring Catch

20,41. Coupling 23,42. Fixed knob

40. Head Rest 60. Arm Rest

The object of the present invention is achieved by a two-rod fastening frame attached to the bottom of the fastening member and a coupler for fixing the fastening frame.

The fastening frame is composed of a pair of rods in parallel and close to each other, the coupling member is coupled to the fastening frame is inserted between the two rods by applying a force to extend the distance between the two rods on the outer circumferential surface of each rod, It is composed of a fixing knob and a coupler body integrally formed with a conical fixing portion for fixing the binding member such as the head rest and the arm rest by bringing the two rods in close contact with the side.

The above objects and technical constitutions of the present invention and the resulting effects thereof will be clearly understood by the following description with reference to the drawings showing preferred embodiments.

4 is a cross-sectional view of the chair headrest and the coupling tool according to the present invention before assembly, and FIG.

As shown, the head rest 40 is composed of a main body 40A and a fastening frame 40B, and the fastening frame 40B attached to the lower part of the main body is composed of a pair of rods 40C parallel and close to each other. do.

The coupler 41 is composed of a coupler body 43 and the fixing knob 42, the coupler body 43 is a hollow body of each pipe form, the cross section 43E of the coupler body of the fastening frame An insertion hole 43D into which the two rods 40C enter is formed, and an inlet 43C through which the fixing portion 42A of the fixing knob and the threaded portion 42B penetrates is provided in the front surface 43A, and in the rear surface 43B. A screw thread 42B of the fixing knob and an inner peripheral surface for screwing are formed through the assembly tool 43F having a female thread.

Looking at the assembly order of the head rest 40 having the above structure and the fixing method of the head rest after height adjustment as follows.

The assembly of the head rest 40 begins by introducing the two rods 40C of the head rest fastening frame into the fitting body through the insertion opening 43D of the hollow fitting body section 43E.

At this time, the coupler body 43 may be formed integrally with the chair back frame or separately attached to be located at the back of the back.

Insert the fastening frame 40B of the headrest into the coupler body 43 as described above, adjust the height of the headrest 40, and then adjust the headrest height adjusting knob 42 to the front of the coupler body 43A. After insertion through the inlet (43C) formed in the), the screw portion 42B of the fixing knob penetrates through the wall of the coupling member rear surface 43B, and screwed into the assembly opening (43F) with female threads on the inner circumferential surface of the head. Fix the height of the rest.

At this time, looking at the principle that the headrest fastening frame is fixed in the coupler body based on Figure 4 as follows.

First, the coupler body 43 is centered in the direction perpendicular to the body front and back surfaces 43A and 43B by the screw portion 42B and the fixing portion 42A of the fixing knob 42 inserted into the inlet 43C. While penetrating, it is divided into the left space 43G and the right space 43H, and each rod 40C of the fastening frame is one in the divided left and right spaces 43G and 43H inside the coupling body, that is, the left inner wall 43I. And one between the fixed knob 42, the right inner wall 43J, and the fixed knob 42.

If the height of the headrest and the position of the fastening frame are determined as described above, tighten the screw portion 42B of the fixing knob while screwing it with the assembly opening 43F of the rear side of the coupling member body 43B. 42A is also pushed between the two rods (40C) of the fastening frame while moving in the direction of the coupler body front (43A) to the rear (43B).

Since the fixing portion 42A of the fixing knob is a conical shape in which the diameter of the circumferential surface becomes larger from the screw portion 42B toward the handle 42C, the two rods are connected as the fixing portion 42A enters between the two rods 40C. The left and right inner walls 43I and 43J of the body 43 and the inclined conical outer circumferential surface of the fixing portion 42A are fixed to fix the headrest 40.

6 shows a height adjustable arm rest 60 in which the main body 40A is replaced with the arm rest body 61 in the head rest 40. The arm rest 60 is different from the shape of the head rest 40 and the main body, and is composed of the same coupling and adjustment structure.

The height adjustment structure of the fastening member for the chair of the present invention does not need to form any height adjustment grooves on the two rod surfaces of the two-rod fastening frame, as described above, which can lower the production cost of the fastening frame, and the fastening frame Productivity also has advantages.

In addition, unlike the case where the height adjustment grooves are formed on the surface of the two rods of the conventional headrest fastening frame, which cannot be height-adjusted or only at regular intervals, the height-adjusting structure of the present invention finely adjusts the height of the binding member, thereby increasing the chair. It is helpful to prevent bad body deformation of people who are using, especially during the growing season, it is also expected to reduce fatigue during use.

Claims (4)

In the height adjustment structure of the fastening member for chairs comprised of the fastening frame 40B and the engaging opening 41, the fastening frame 40B consisting of two parallel rods 40C faces the ground at the bottom of the fastening member. The coupling hole 41 is coupled to the fastening frame 40B, and is hollow and has an insertion hole 43D of the fastening frame 40B at a cross section 43E, and a fixed knob at the front 43A and the rear 43B. (43) of the inlet (42) and the assembly portion (43F) for screwing the threaded portion (42B) of the fixed knob 42 is composed of a coupling member body 43 and the fixed knob 42, respectively Height adjustment structure of the binding member for chair to say. According to claim 1, wherein the headrest for the chair composed of the height adjustment structure is attached to the lower end of the headrest and the fastening frame which is an assembly of the headrest 40 consisting of two rods 40C parallel to each other and the height adjustment part ( 40B) and a coupling tool 41 which serves to fix the coupling frame 40B and then fix it, and the coupling tool 41 is hollow and has an insertion hole of the locking frame 40B in the end face 43E. 43D and an assembly opening 43F for screwing into the inlet 43C of the fixing knob 42 and the threaded portion 42B of the fixing knob 42 is formed at the front 43A and the rear 43B, respectively. Height adjustment structure of the binding member for the chair, characterized in that composed of the coupler body 43 and the fixing knob (42). According to claim 1, wherein the armrest for the chair is composed of the height adjustment structure is attached to the lower end of the armrest and the assembly of the armrest 60 consisting of two rods (60C) parallel to each other and the fastening frame ( 60B) and a coupling tool 61 which serves to fix the coupling frame 60B and then fix it, and the coupling tool 61 is hollow and has an insertion hole of the locking frame 60B in the end face 63E. 63D, and the front body 63A and the rear surface 63B, the engaging body which is formed with an assembly opening for screwing with the inlet (63C) of the fixing knob 62 and the threaded portion (62B) of the fixing knob 62, respectively. Height adjustment structure of the binding member for a chair, characterized in that consisting of (63) and the fixing knob (62). 4. The fixing knob 62 is integrally formed in the order of the handle 62C, the fixing portion 62A, and the screw portion 62B, and the fixing portion 62A is formed at the screw portion 62B. Height adjustment structure of the fastening member for chairs, characterized in that the threaded portion 62B is formed in the corner portion in a conical shape in which the diameter of the outer circumferential surface increases toward the direction of 62C).