KR200435839Y1 - Titling device for chair - Google Patents

Abstract

The present invention relates to a backrest tilting device for a chair having a simple configuration that can easily operate the backrest (backrest) inclination, the bracket 16 is fixed to the lower side of the seat frame frame 3, and fixed to the outside of the bracket 16 The guide tube 23 to be installed, the movable member 24 installed in the guide tube 23 to slide, and the large shaft portion 27 and the large shaft coupled to the opening groove 25 of the movable member 24. Spring 26 which is coupled to the holding rod 13 and the retracting rods 28 and 29 of the holding rod 13, respectively, and is supported by the holding rods 13 and 29 at the secondary line and the rear end. 30 and the upper and lower locking grooves 14 and 15 formed on the backplate frame 5 so that the engaging rods 13 can be separated and coupled to the guide tube 23 and are rotated forward and backward. It consists of a rotating member 33 to move the moving member 24 back and forth by the upper locking groove 14 or the lower locking groove 15 to release or release the locking state.

Chair, seat, back, tilting, lifting, lever, shaft member, deep groove, shallow groove, rotating member

Description

Chair back tilting device {TITLING DEVICE FOR CHAIR}

1: Chair cross-sectional view of an example to which the subject innovation back tilting device is applied.

2 is a plan view of the present invention.

Figure 3: An initial state side cross-sectional view of the backplate in the present invention.

4 is a side cross-sectional view of the tilted state by the back tilting device in the present invention.

5 is a cross-sectional view of the subject tilt tilting device of the present invention, a sectional view of the engaging rod immersed.

Figure 6 is a cross-sectional view of the present invention tilt tilting device, cross-sectional view of the locking bar is protruded.

7 is a state of the present invention is caught in the lower locking groove.

8 is a state of the present invention is caught in the upper locking groove.

9 is a plan sectional view and a plan view of the guide tube of the present invention.

10: Front view of the present invention moving member.

11 is a cross-sectional view of the present invention moving member.

12 is a plan view of the subject innovation rotating member.

13 is a deep groove and shallow groove portion development view of the guide tube of the present invention.

14 is a front view of the subject innovation rotating member.

15 is a cross-sectional view taken along the line A-A 'of the present invention, a state in which the rotating member is rotated counterclockwise.

Fig. 16 is a cross-sectional view along the line A-A 'of the present invention, in which the rotating member is rotated clockwise.

17 is a cross-sectional view before the locking rod is caught in the locking groove in the present invention.

18 is a cross-sectional view of the engaging rod is coupled to the lower locking groove in the present invention.

19 is a cross-sectional view of the engaging rod is coupled to the upper locking groove in the present invention.

20: Cross-sectional view of the spring-tight engaging bar in contact with the side of the back frame before being coupled to the locking groove in the present invention.

<Explanation of symbols for the main parts of the drawings>

(1)-chairs (2)-seats

(3)-seat frame (4)-back
(5)-back frame (5a)-reinforcement
(6)-shaft member (7)-cartage means
(7a)-support rod (7b)-compression spring
(7c)-Hanging Rod (7d)-Reinforcement
(7e)-nut (7f)-support
(8)-Gas Cylinder (8a)-Gas Cylinder Opening Pin
(9)-lift lever (10)-back tilting device

delete

delete

delete

delete

delete

delete

delete

delete

delete

(11)-Chairs (12)-Caster

(13)-Jang-rod (14) (15)-Jang-groove

(16)-bracket (16a)-horizontal member

(17) (18)-Vertical Member (19) (20)-Through Hole

(21) (22)-Burling Part (23)-Guide

(24)-moving member (25)-opening groove

(26) (30)-Spring (27)-Axle

(28) (29)-Shrinkage (31)-hole

(32)-Handle (33)-Rotating Member

(34)-Song (35)-Pin

(36)-Deep Groove (37)-Shallow Groove

(38)-Jagged Projection (39)-Protrusion

(40)-Slope (41)-Protrusion

(42)-Guide (43)-Body

(44) --- Slope (45)-Reinforcement

(46)-Indentation Groove (47)-Split Pin

( θ )-back tilting angle

The present invention relates to a chair tilt tilting device of a simple configuration that can be easily applied to a low-cost chair, such as a chair that is assembled only by injection parts to easily manipulate the back (backrest) inclination.

In general, the seat plate assembly mounted on the chair is configured to adjust the height of the seat plate and the inclination of the back plate, respectively, in pursuit of ease of use and comfort.

The seat plate assembly is operated by the opening and closing pins of the gas cylinder with the lifting lever to raise or lower the seat plate, and by operating the back tilting device (Titling Device) with a tilting lever to adjust the inclination of the back plate to an arbitrary angle or a set angle.

On the other hand, the chair (one-touch type chair) in which the seat plate and the back plate are fixed integrally is inexpensive, while the seat plate is allowed to lift and the slope of the back plate is not allowed, which is inconvenient to use. In the case of the high-end chair to which the back tilting device is granted, the configuration is complicated and expensive, as well as high frequency of failure.

Therefore, an object of the present invention is to provide a chair tilting device for a chair having a simple configuration that can be applied mainly to a low-cost chair, such as a chair assembled only with injection parts, to achieve a slope of the backrest.

Bracket fixed to one side of the seat plate frame, the guide tube fixed to the outside of the bracket, the movable member installed in the guide tube and the slide movement in order to achieve the object, and coupled to the opening groove of the movable member A catch rod, a small shaft portion formed at the front and rear ends of the large shaft portion and the large shaft portion formed on the hook rod, a spring spring coupled to the front and rear small shaft portions, and a side of the back frame so that the locking rod can be separated and coupled. The upper locking groove and the lower locking groove is formed, and the rotating member coupled to the guide tube and moving the moving member back and forth by forward and reverse rotation to lock or release the upper locking groove or lower locking groove formed in the back frame It is composed.

Further, a deep groove formed at the tip of the rotating member, a shallow groove formed at one side of the deep groove, a locking protrusion formed at the rear end of the moving member, and an inclined surface and a protrusion formed between the deep groove and the shallow groove It is formed is caught or released in the upper and lower locking grooves formed in the back frame while moving the member back and forth according to the forward and reverse rotation state of the rotating member.

In addition, the present invention can be expected to reduce the cost more than 50% by operating the slope of the back with a simple and simple function, it is possible to upgrade the low-cost chair.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the embodiments of the present invention, the same elements in the drawings are denoted by the same reference numerals as much as possible, and detailed descriptions of related known configurations or functions will be omitted so as not to obscure the subject matter of the present invention.

1 to 20 show a backrest tilting device of the present invention and a chair 1 on which the backrest tilting device is installed.

The chair 1 has a seat frame frame 3 to which the seat plate 2 is fixed, a back frame frame 5 to which the back plate 4 is fixed, and the back plate 4 is inclined at a predetermined angle from the seat plate 2 or originally. The shaft member 6 and the holding means 7 which axially connect the back frame 5 and the seat frame 3 so as to return to the position, and the seat plate frame 3 so that the seat plate 2 can be raised and lowered to a predetermined height. The gas cylinder 8 fixed to the lower part, the lifting lever 9 for operating the gas cylinder 8, the chair leg 11 installed below the gas cylinder 8, and the lower leg 11 It is composed of a plurality of casters 12 are installed, the back tilting device 10 is attached to the seat frame 3 part of the chair 1, the upper and lower sides of the back frame 5 by the user's operation One or more locking grooves 14 and 15 are formed to catch or release the locking rods 13 coming from the back tilting device 10. The inclination of the plate 4 can be adjusted arbitrarily.

The back plate tilting device 10 of the present invention is horizontally installed with the help of a bracket 16 installed on one side of the seat plate frame 3, preferably, the bottom plate frame 3 far from the shaft member 6.

The bracket 16 is fixed to the bottom surface of the seat plate frame 3, and the left and right pair of vertical members 17 and 18 to maintain a predetermined separation distance so as to smoothly move the engaging rod 13. And, the horizontal member (16a) for connecting the lower portion of the vertical member (17) (18), and both the vertical member (17) (so that the locking rod 13 installed in the outer vertical member 17 can penetrate loosely) The through holes 19 and 20 formed in the 18 and the burring portions 21 and 22 which protrude from the inside of the vertical members 17 and 18 so that the through holes 19 and 20 extend to a predetermined length. Consists of, the front end of the engaging rod 13 is configured to be coupled to the through hole 19 of the outer vertical member 17 in advance.

The back tilting device (10) is a long guide pipe 23 is horizontally fixed to the outer vertical member 17, and coupled to the guide tube 23 inside the slide motion in the longitudinal direction of the guide tube 23 The moving member 24, the opening groove 25 is formed in the longitudinal direction inside the moving member 24, the spring 26 fitted into the opening groove 25, and coupled to the opening groove 25 Smaller diameter than that of the engaging rod 13, the large-diameter large shaft portion 27 formed in the middle of the locking rod 13, and the large shaft portion 27 formed on both front and rear ends of the large shaft portion 27, respectively. To the small-sized portion 28, 29, the rear end small-size portion 28 is loosely fitted in the spring 26 coupled to the opening groove 25, and the small-sized portion 29 formed at the tip of the engaging rod 13 The spring 30 is loosely fitted to allow the catching rod 13 to slide in the opposite direction of the backplate frame 5 and the catching rod 13 is coupled to each other so that the inclination (tilting angle) of the backplate 4 is maintained.Consists of a backing allows the frame (5) engaging grooves 14 and 15 are upper and side, respectively forming the lower portion.

Rotating member 33 having a handle 32 is coupled to the end of the guide tube 23, and the hole 31 and the end of the rotating member 33 formed up and down at the end of the guide tube 23 up and down The formed long hole 34 is vertically matched and then coupled to the pin 35 as shown in FIGS. 15 and 16 to prevent separation of the guide tube 23 and the rotating member 33, and also rotates by the handle 32. Rotating the member 33 allows the rotating member 33 to rotate forward and reverse at a predetermined angle by the long hole 34 coupled to the pin 35.

12 to 14, deep grooves 36 are symmetrically formed on both sides of the rear end of the rotary member 33, and shallow grooves 37 are symmetrically formed on one side of the deep grooves 36, and The tip portion is formed with a locking portion 38 is coupled to the deep groove 36 and the shallow groove 37, the projection 39 is formed between the deep groove 36 and the shallow groove 37 is formed by the locking protrusion ( Departure of the 38 is prevented, and the locking protrusion 38 located in the deep groove 36 is easily moved to the shallow groove 37 by the inclined surface 40 formed between the deep groove 36 and the protrusion 39. It is configured to be locked.

The rotational angle of the rotating member 33 is an angle at which the locking portion 38 moves between the deep groove 36 and the shallow groove 37, and supports the front end reduction portion 29 of the locking bar 13. 30 is tangled in the direction of the handle 32 so that the engaging protrusion 38 of the moving member 24 is always in contact with the deep groove 36 or the shallow groove 37.

The deep grooves 36 are formed in a pair as shown in FIG. 13, and the shallow grooves 37 formed adjacent to the deep grooves 36 based on the protrusion 39 are also formed in a pair. .

The handle 32 has a gripping portion extending to one side of the rotating shaft to be easily rotated by the user as shown in FIG.

The small axis portion 29 of the locking rod 13 which is supported by the spring 30 in the opposite direction (handle direction) of the back frame 5 is locked by the rotation of the handle 32 and the rotation member 33. When the 38 is caught in the shallow groove 37, the catching rod 13 passes through the through hole 20 of the bracket 16 and is coupled to the upper catching groove 14 or the lower catching groove 15 to maintain the catching state. The slope of the back board 4 is determined.

The engaging protrusion 38 coupled to the shallow groove 37 does not leave the shallow groove 37 unless an intentional external force is applied by the protrusion 39. Since the locking protrusion 38 is supported by the springs 26 and 30, it is always in contact with the deep groove 36 or the shallow groove 37.

The upper and lower portions of the guide tube 23 are formed with a pair of protrusions 41 which protrude inwardly as shown in FIGS. 9 and 17 to 20, and as shown in FIG. 10, in the longitudinal direction of the outer surface of the movable member 24. A pair of guide grooves 42 to which the protrusions 41 are coupled are formed, respectively, so that the handle 32 is rotated in a clockwise direction at a predetermined angle in a state in which the locking protrusion 38 is coupled to the deep groove 36 as shown in FIG. 5. When rotated, the locking protrusion 38 and the moving member 24 are moved to the tip end by the inclined surface 40. As shown in FIG. 6, the locking protrusion 38 is stopped by the shallow groove 37, and the movement stops. 13 is advanced to the front end is coupled to the upper locking groove 14 or the lower locking groove 15 is fixed to the slope of the back frame (5).

If the tip of the locking bar 13 is coupled to the lower locking groove 15 as shown in FIG. 18, the back plate 4 is maintained in an initial state before tilting, and the tip of the locking bar 13 is as shown in FIG. 19. If the state is coupled to the upper locking groove 14, as shown in Figure 4 the back frame 5 is maintained tilting angle in a state inclined at a predetermined angle ( θ ) from the seat plate frame (3).

In addition, as shown in FIG. 17, when the locking protrusion 38 is positioned in the deep groove 36, the tip of the locking rod 13 is separated from the upper and lower locking grooves 14 and 15. Therefore, when the user pushes the back plate 4 backward, the back frame 5 is tilted within a predetermined angle θ with respect to the shaft member 6, wherein the back plate 4 is supported by the fingering means 7. do.

An inclined surface 44 is formed on the outer circumference of the front end of the body 43 of the moving member 24, and a curved surface is formed on the corner portion of the rear end of the body 43 so that a good slide motion of the moving member 24 is achieved. This is made, the moving member 24 moving to the front end is allowed to move in the longitudinal direction by the protrusion 41 coupled to the guide groove 42, but the rotation is suppressed, the body 43 and the locking protrusion ( 38) between the reinforcement portion 45 is gradually thickened toward the body 43 direction is formed and reinforced.

The body 43 of the movable member 24 may have a cylindrical shape, but as illustrated in FIG. 10, upper and lower guide grooves 42 and a plurality of recessed grooves 46 are formed in the longitudinal direction, respectively, to prevent material waste. .

The upper and lower locking grooves 14 and 15 formed in the back frame 5 have a radius around the shaft member 6 in consideration of the fact that the back frame 5 rotates around the shaft member 6. Place it on the arc.

A flat portion is formed at the tip of the rotating member 33 to avoid the deep groove 36 and the shallow groove 37, and the locking protrusion 38 and the deep groove 36 may contact each other to smoothly operate the rotating member 33. Preferably, the planar portion and the movable member 24 are spaced apart from each other so as to be in contact with each other. However, the planar portion and the movable member 24 having a large contact area are configured to be in contact with each other. And the deep groove 36 may be configured to not be in contact with each other so as to reduce the fatigue of the locking portion 38.

In the present invention, the locking rod 13 and the upper and lower locking grooves 14 and 15 are slightly larger in size than the outer diameter of the locking rod 13 so that the locking rod 13 and the upper and lower locking grooves 14 and 15 can be coupled well. In addition, the inclined surface is formed at the leading edge portion of the locking bar 13, so that engagement between the locking bar 13 and the upper and lower locking grooves 14 and 15 is easy.

In the present invention, when the moving member 24 is backward, the locking protrusion 38 is coupled to the deep groove 36 as shown in FIG. 5, and the locking rod 13 and the upper and lower locking grooves 14 and 15 are disposed. Is maintained in a separated state, the elastic force of the spring (26) 30 holding the back and forth of the locking rod 13, respectively, is maintained in a balanced state.

In the initial state in which the back plate 4 is not inclined, the tip of the locking bar 13 is coupled to the lower locking groove 15 to maintain the back plate 4 in a fixed state as shown in FIGS. 7 and 18. In the state inclined at the predetermined angle θ , the back plate 4 is fixed in a state in which the tip of the locking bar 13 is coupled to the upper locking groove 14 and inclined as shown in FIGS. 8 and 19. When the locking bar 13 is separated from the upper locking groove 14 or the lower locking groove 15 as described above, the backing plate 4 is formed according to the intentional external pressure of the user in a predetermined angle θ range by the fingering means 7. It is inclined, and the inclined back plate 4 is appropriately supported by the fingering means 7.

The gripping means 7 includes a support rod 7a having a locking rod 7c protruding upward from the seat plate frame 3 and a nut 7e and a spring support piece 7f coupled to the lower portion, and a support rod ( Compression spring 7b coupled to 7a and holding the back frame 5 and the spring support piece 7f, and coupled to the nut 7e so as to rotate the nut 7e and surrounding the compression spring 7b. It is composed of a reinforcing piece 7d for reinforcing and supporting the adjustment cap and the engaging rod 7c, and by adjusting the compression force of the compression spring (7b) by rotating the adjustment cap it is possible to adjust the appropriate grip force.

20 is a vertical reinforcing portion of the back frame 5 by the elastic force of the spring (26) before the engaging rod 13 advanced to the front end is coupled to the upper locking groove 14 or the lower locking groove (15). 5a) shows a state in contact with the side surface, and when the back plate 4 is moved forward or backward, the engaging rod 13 being supported by the spring 26 is the upper locking groove 14 or the lower locking groove ( 15) is prevented from being caught quickly to protect the user.

8 and 19, when the tip of the catching rod 13 is coupled to the lower catching groove 15 so as to flip the back plate 4 in a state where the back plate 4 is fixed (initial state), the handle ( 32, the engaging state of the locking bar 13 and the lower locking groove 15 should be released first.
That is, after the user is seated on the chair, the locking rod 13 coupled to the lower locking groove 15 by pushing the back plate 4 slightly back does not touch or strongly touches the lower locking groove 15. When the knob 32 is rotated counterclockwise in a state where it is not in the state, as shown in FIG. 5, the moving member 24 is retracted by the spring force of the spring 30 and the locking portion 38 is coupled to the deep groove 36. Since the latch is released, the back plate 4 can be tilted within a predetermined angle range.
In this state, when the user pushes the back plate 4 further back and rotates the handle 32 in the clockwise direction, as shown in FIG. 6, the moving member 24 moves forward and the locking portion 38 is a shallow groove 37 Is coupled to the upper end of the engaging rod 14, the engaging frame is coupled to the upper locking groove 14 as shown in Fig. 8, 19, the back frame 5 and the back plate 4 is fixed in an inclined state.

At this time, the spring 30 holding the catching rod 13 is compressed, and the outer circumferential surface of the catching rod 13 is held in contact with one side of the inner surface of the catching groove 14 by the fingering means 7. The elastic force of the spring 30 is much weaker than the elastic force of the gripping means 7.

In addition, the locking rod 13 and the upper locking groove 14 or the lower locking groove 15 does not match and may not be coupled. That is, when the front end surface of the catching rod 13 supported by the springs 26 and 30 is in contact with the reinforcing portion 5a of the backing frame 5, if the user moves the backing plate 4 slightly, Main surface) Since the locking bar 13 and the upper locking groove 14 or the locking bar 13 and the lower locking groove 15 are coincident with each other and the coupling is made, the inclination of the back plate 4 is fixed at a predetermined angle θ . do.

And, in order to release the tilted state at a predetermined angle ( θ ) as shown in Figure 4, the tip of the locking rod 13 is caught in the upper locking groove 14 by the gripping means (7), the spring Since the elastic force of (26) (30) is much weaker than the elastic force of the fingering means (7), even if the handle 32 is reversed, the moving member (24) and the locking bar (13) do not move (reverse), Therefore, the locking bar 13 and the upper locking groove 14 is not separated.

In such a state, when the user slightly moves the back plate 4 with the back (flows), the contact between the catching rod 13 and the upper catching groove 14 is released while the elastic force of the spring 30 is compressed. 7, the moving member 24 is reversed, the locking protrusion 38 is coupled to the deep groove 36, the locking rod 13 is separated from the upper locking groove 14, and the spring 26 ( 30, the elastic force is maintained in a balanced state.

In the above, when releasing the tilting state, the back plate 4 is not inclined directly to the user's back (back) in the seated state, thereby protecting the user.

On the other hand, when operating the opening and closing pin (8a) of the gas cylinder (8) to adjust the lifting degree of the seat plate 2, when the user grasps the lifting lever (9) and pulled up the split pin 47 shown in FIG. While operating on the principle of the lever by the end of the lifting lever (9) is pressed by pressing the opening and closing pin (8a) so that the seat plate frame (3) is raised, so that the height of the back plate (4) can be adjusted using the weight do.

When the height adjustment of the seat plate 2 is completed and the lifting lever 9 is released, the rise of the opening / closing pin 8a stops the rise of the gas cylinder 8 and the rise of the seat frame frame 3 also stops the rise of the seat plate 2 height. Is fixed.

The present invention can be pursued more convenient because it is supported by the spring (26) (30) and can easily manipulate the inclination of the back plate 4 while the locking rod 13 is moved by the operation of the rotating member (33). .

Reference numeral 3a denotes a fastening hole for fixing the seat plate 2 to the seat frame frame 3, 6a is a shaft bracket for supporting the shaft member 6, and 5b is a back frame frame 5 And a connecting member for connecting the back plate 4, 5c is a fastening hole for fixing the connecting member 5b to the back frame frame 5, and 9a allows the lifting lever 9 to pass therethrough. It is a hole formed in the side plate frame 3 side.

The present invention described above is not limited to the present embodiment and the accompanying drawings, various substitutions, modifications and changes are possible without departing from the technical spirit of the present invention, which is usually in the art It is self-evident for those who have knowledge.

As described above, the present invention is mainly applied to low-cost chairs, such as chairs assembled only with injection-molded parts, so that the backrest (back) tilt can be easily manipulated.

In addition, the present invention can achieve a more comfortable and comfortable at a lower cost because the initial stop and the slope of the back is achieved in a low-cost chair, the shock rod that can be applied to the user because the stop rod is prevented from sudden movement because of the spring-tight configuration This has the effect of being prevented.

In addition, the back tilting device of the present invention is a useful design that can be expected to reduce the cost more than 50% compared to the existing because the configuration is simple and easy to install and easy to manufacture and install, the defect is reduced.

Claims (3)

Bracket 16 is fixed to the lower side of the seat plate frame 3, the guide tube 23 is fixed to the outside of the bracket 16, the movable member 24 is installed in the guide tube 23 and slide movement And a hook rod 13 coupled to the opening groove 25 of the movable member 24, and formed at the front and rear ends of the large shaft portion 27 and the large shaft portion 27 formed on the locking rod 13, respectively. The back frame so that the small end portions 28 and 29, the springs 26 and 30 coupled to the front and rear end minor portions 28 and 29, and the tip of the locking rod 13 can be separated and coupled. The upper and lower locking grooves 14 and 15 formed at the side portions of the upper surface of the upper and lower locking grooves 14 are coupled to the guide tube 23 and move the moving member 24 back and forth by forward and reverse rotation. Back chair tilting device consisting of a rotating member 33 for locking and unlocking the lower locking groove (15). The method according to claim 1; The rotating member 33 includes a deep groove 36 symmetrically formed at the tip, a shallow groove 37 symmetrically formed at one side of the deep groove 36, and between the deep groove 36 and the shallow groove 37. Back slope tilting device for the chair consisting of the inclined surface (40) and protrusions (39) formed on the rear handle (32). The method according to claim 1 or 2; The rotary member 33 is coupled to the end of the guide tube 23, the hole 31 formed up and down at the end of the guide tube 23 and the long hole 34 formed up and down at the end of the rotating member 33 Back tilting device for a chair made by combining with a silver pin (35).

Images