KR100359761B1 - Tilting device for headrests in autombile - Google Patents

Abstract

PURPOSE: A tilting device of a headrest for a vehicle is provided to simplify the structure, reduce the number of parts and manufacturing processes, stably install a tilt control member, and prevent reduction of the life span of the tilt control member. CONSTITUTION: A tilting device of a headrest for a vehicle comprises a stay(10); a ratchet member(20) fixed to a horizontal part(11) of the stay; a tilt control member divided into two plate bodies(30a,30b); a first torsion spring(40) coupled to the horizontal part, to rebound the tilt control member in the reverse direction; a hindering member(50) installed to the tilt control member, to prevent reverse movements of the tilt control member; and a second torsion spring(60) rebounding the hindering member. Axial holes(301) are formed in the middle of the lower part of side plates(31,32) of the plate bodies. The plate bodies are installed to the horizontal part of the stay and the plate bodies rotate on the horizontal. Thus, the installation state stable and reduction of the life span is prevented.

Description

Tilting device for headrests in autombile}

The present invention relates to a tilting device for a headrest for an automobile, and more particularly to a tilting device in which the structure thereof is very simple and in particular the tilt adjusting member is stabilized and the shortening of its life is prevented.

Conventional tilting device, the steel bar " The lower end of both side plates of the inclination adjustment member formed by bending the steel plate in the "c" shape to the horizontal portion of the stay bent in a "shape" was installed so that the inclination adjustment member was rotated about the horizontal portion.

However, in order to install in this way, since both vertical portions of the stay extend in parallel to each other at both ends of the horizontal portion, and both side plates of the inclination adjusting member also extend in parallel to each other, It was not possible to form shaft holes and fit them in the horizontal part.

Therefore, in the related art, by forming a coupling groove in which the horizontal portion is coupled to the bottom middle of both side plates of the inclination control member, and then, the inclination control member is a separate binding member mainly made by bending a steel wire so that it can be rotated without being separated. In this case, the binding member is loosened due to the phenomenon such as deformation of the binding member due to vibration, shock or repeated use while driving, so that the installation state of the inclination adjusting member becomes unstable or the tilting movement is smooth. It was not made, and in severe cases there were many problems such as the binding member is separated and the life is shortened.

The present invention has been made in view of the above points, the object is that the structure is simple and easy to install and install the inclined adjustment member, as well as the installation state is stable and the tilting action is always made smoothly and preventing the shortened life To provide a tilting device of the headrest.

The object of the present invention is to separate the inclination adjusting member into two "a" shaped plates and to form a shaft hole at the bottom of each side plate of these plates, respectively, by using these shaft holes to directly plate through both vertical portions of the stay. It is achieved by providing a tilting device of the headrest which allows the inclination adjusting member to be stably fixed to the horizontal part of the stay, since the front plates of the inclination adjusting members overlapping each other are attached to each other by welding and the like after being combined and moved to the horizontal portion. .

1 is an exploded perspective view of a tilting device according to an embodiment of the present invention.

Fig. 2A is a partially cutaway side view of the tilting device mounted in a cover;

Figure 2b is a partial cut away plan view.

3A-D are side cross-sectional views showing the same operating state.

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

10; Stay,

11; Horizontal,

20; Ratchet member

30; Tilt adjustment member,

31,32; Bilateral plates, 30a, 30b; Rejection,

301; Achievement,

50; Resistant,

Hereinafter, the tilting device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3 show a tilting apparatus according to an embodiment of the present invention, the steel bar " The stay 10 which is bent into a shape, the ratchet member 20 fixedly mounted to the horizontal portion 11 of the stay, and the ratchet member is positioned below the inner surface of the other side plate 32. The inclination adjusting member 30 is lowered and is rotated around the horizontal portion, and the horizontal portion is installed to be interposed between the ratchet member and one side plate 31 of the inclination adjusting member so that the inclination adjusting member is horizontal. The first torsion spring 40 which is not moved left and right at the same time and is reversely rotated, and the upper portion between the side plate of the inclination control member is engaged with the ratchet member to prevent the reverse rotation of the inclination control member. The blocking member 50 and one end 61 are composed of second torsion springs 60 which are hooked to the other side plate 32 and the other end 62 is hooked to the blocking member.

The ratchet member has several one-way gear teeth 21 formed on the upper outer circumferential surface thereof, and stepped 22 and 22 ′ protrude upward from the front and rear ends of the gear teeth.

The blocking member is the upper end is to be fixed in the inclined adjustment member 30 to the shaft 53, the claws (51) 52 are extended downward to be isolated at a suitable interval,

In addition, the toenail 51 selectively hangs the gear teeth 21 of the ratchet member, and the stepped portion 22 is positioned between the toenails 51 and 52.

The inclination adjustment member 30 is divided into two plate bodies 30a and 30b having a flat cross section having a "a" shape, and a shaft hole 301 in the middle of each side plate 31 and 32 of these plate bodies. Are formed.

In addition, a hook hole 36 that hangs one end 41 of the first torsion spring 40 is formed at an upper side of the one side plate 31, and a second torsion spring 60 is formed at the upper side of the other side plate 32. The hook hole 37 which hangs the one end 61 is formed, and the control jaw 38 which controls the degree of upward rotation of the blocking member 50 protrudes inward on the upper side of the other side plate.

Accordingly, when the plates are coupled to the stay 10, first, the shaft holes 301 of the plate 30a are inserted in the vertical portions on the right side of both vertical portions 12 of the stay, and the plate bodies 30b on the left vertical portion. After inserting the shaft hole 301 of the plate, each side plate 31, 32 of these plate body on both sides of the ratchet member 20 and the first torsion springs 40 mounted on the horizontal portion 11 of the stay Each of the front plates 31 'and 32' may be overlapped with each other by moving to the horizontal portion 11 so as to surround each other, and then welded or detached by riveting or screwing.

In this case, the plate bodies 30a and 30b are fixed to the horizontal portion 11 of the stay 10 in the form of "c" and are pivotally installed with the horizontal portion as the axis.

In this way, after the inclination adjusting member is condensed, one end 41 of the first torsion spring 40 is hooked to the hook hole 36 formed in the plate body 30a, and the other end 42 is the end of the ratchet member 20. Stepped on the rear end of the step (22).

One end 61 of the second torsion spring 60 may be hooked to the hook hole 37, and the other end 62 may be hooked to the hook hole 54 of the blocking member 50.

When assembled in this way, since the horizontal portion 11 of the stay 10 is adhered through the shaft holes 301 of the plate 30a, 30b, the inclination adjustment member 30 is stable even without using a separate binding member. Is condensed.

On the other hand, the inclination adjustment member 30 is mounted in the cover 80 formed of synthetic resin, the upper peripheral portion is supported by a support protrusion 81 protruding inward to the upper side of the front and rear center portion of the cover, the lower peripheral portion Since the lower part of the front and rear surfaces of the cover are supported by the bonding parts 82 and 82 'which are brought into contact with each other, they are mounted so as not to flow in the cover.

In addition, both vertical portions 12 of the stay 10 are respectively exposed downwardly through the through holes 83 formed in both front and rear sides of the bottom of the cover 80, and the cover is cushioned member 90 of the headrest. Is mounted within.

Referring to the operating state of the tilting device according to an embodiment of the present invention configured as described above are as follows.

First, as shown in FIG. 3A, when the cover 80 is in a vertical state, the claws 51 of the blocking member 50 are engaged with the gear teeth on the rear end side of the gear teeth 21 of the ratchet member 20. .

In such a state, when the cover 80 is properly rotated forward and tilted at an appropriate angle as shown in FIG. 3B or 3C, the inclination adjustment member 30 is rotated clockwise around the horizontal portion 11 of the stay 10. Because of the forward rotation, the blocking member 50 is also rotated, so that the claws 51 of the blocking member are hooked to the middle or the tip side of the gear teeth 21.

In this way, the inclination, ie, inclination, of the cover 80 may be adjusted in several stages proportional to the number of gear teeth 21. When the cover is returned to a vertical state again, as shown in FIG. Rotate the cover forward as far as possible.

In this case, since the step 22 of the ratchet member 20 pushes up the front end surface of the toenail 51, the blocking member 50 is rotated in the clockwise direction. It is isolated.

At this time, the other end 62 of the second torsion spring 60 presses the toenail 51 side of the blocking member 50, which is upward, but in this state because the stepped jaw 22 supports the toenail 51. The blocking member is not reversely rotated arbitrarily, and at the same time, the first torsion spring 40 is strongly twisted in proportion to the degree in which the inclination adjusting member 30 is rotated forward.

Removing the force that rotates the cover 80 in this state in this state, the strong repulsive force of the first torsion spring is applied to rotate the inclination control member 30 counterclockwise.

When the reverse rotation, the claws 51 and the gear teeth 21 are isolated from each other, so that the inclination adjusting member 30 is smoothly reversed, and in this process, the claws 52 of the blocking member 50 are rotated. When it is caught by the step 22 of the ratchet member 20, the step is pushed up, so that the blocking member is also reversely rotated. At the same time, as the inclination adjusting member becomes vertical, eventually all the states are returned to the original state as shown in FIG. 3A. Will be.

The tilting apparatus according to the embodiment of the present invention operated as described above has a simple structure and in particular, separates the inclination adjusting member into two plate bodies each formed with shaft holes on both side plates, and directly adheres to the horizontal portion of the stay using the shaft balls. Since the installation is rotated, the installation state is not only stable, but also has a merit such that the tilting operation is always made smoothly and the shortened life is prevented even when used for a long time.

Claims (1)

When the ratchet member 20 having the one-way gear teeth formed thereon is rotated to install the inclination adjusting member 30 on the horizontal portion 11 of the stay 10 on which the gear 10 is fixedly installed, the tooth member selectively engages with the one-way gear teeth. It is condensed on the upper side between the two side plates of the inclination adjustment member, by the support member 50 formed with the claws to adjust the inclination in various stages and to isolate the engagement state of the gear tooth and the toenail to the repulsive force of the torsion spring In the tilting device of the headrest to allow the inclination control member 30 to be rotated back to the original position, The inclination adjustment member 30 is the side plate 31, 32 formed with shaft holes 301 through which the horizontal portion 11 of the stay 10 penetrates the lower portion of each of the side plates Automobile head, characterized in that the front plate (31 ', 32') is bent at each end is separated into a "a" shaped plate body (30a) (30b) to be overlapped with each other overlapping each other in the form of "c" Tilting device of the rest.