KR20040086011A - Headrest - Google Patents

Abstract

PURPOSE: A headrest for a vehicle is provided to decrease the thickness of the headrest, and to simplify the structure of the headrest by linearly moving, turning at the end and returning the movable unit with semi-elastic force. CONSTITUTION: A headrest comprises a stay rod(114) having a couple of vertical bars(110) mounted in a seat and spaced from each other and a horizontal bar(112) connecting the upper parts of the vertical bars; a fixing gear unit(116) fastened to both ends of the horizontal bar of the stay rod; a connecting link(118) connected to the fixing gear unit by a hinge; a turning gear unit(120) combined with the connecting link and engaged with the fixing gear unit; a spring mounted between the connecting link and the turning gear unit to engage and disengage gear teeth of the fixing gear unit and the turning gear unit by elastically rotating the turning gear unit; a movable unit(124) connected to the end of the connecting link by a hinge and composed of a movable bar(122) arranged in parallel with the horizontal bar; a spring(123) supported between the movable bar and the horizontal bar to pull the movable bar downward; and a turning unit(128) hinge-connected to the horizontal bar of the stay rod to surround the upper part of the movable bar.

Description

Headrest {Headrest}

The present invention relates to a headrest, and more particularly, the headrest is linearly moved to one side and rotated by a predetermined angle at one end, and at the same time, the width of the headrest cover is greatly reduced by returning it to its original state by the spring force. The invention relates to a headrest which can be made simple and has a simple structure.

In general, the headrest is mainly installed in the upper end of the seat structure is axially rotated by the tilting device, and mainly performs the function of preventing neck injuries while supporting the back of the occupant during the rear collision of the vehicle, or It is also used as a head restraint by lifting and rotating to match the head height of the occupant.

Recently, the headrest has a function to prevent neck injuries or a head restraint, and a video monitor is attached to the back of the headrest so that the rear occupant can linearly move to watch the image while driving or stopping in the vehicle. It is produced.

As an example, as shown in Figures 1 to 2b, when looking at the horizontal movement device of the headrest for automobiles previously filed by the applicant, it becomes a steel bar, the horizontal portion 11 and the horizontal portion 11 at each end A stay rod 10 formed of a vertical portion 12 that is bent and extended in parallel; A ratchet member 20 fixedly installed at the horizontal portion 11 and having gear teeth 21 formed on an upper end thereof, and having stepped portions 22 formed at appropriate intervals from the front end of the gear teeth 21; An inclination adjusting member 30 formed of a steel plate, the both side plates of which are bent in parallel to each other, and axially coupled to the horizontal portion 11; A first torsion spring 40 coupled to the horizontal portion 11 so that the inclination adjustment member 30 is shot in the reverse rotation direction; The claws 51 which selectively hangs the gear teeth 21 and the claws 52 which hang on the step 22 are formed in isolation, and the inner side surface of the one side plate to prevent the reverse rotation of the inclination control member 30. A blocking member 50 which is installed in a condensation manner; A second torsion spring (60), one end of which is hooked on an upper side of the side plate of the inclination control member (30) and the other end of which is hooked on an upper end of the blocking member (50); It is configured to include a horizontal moving mechanism 100 is provided with a pair of links 90 to move the cover 80 on which the inclination control member 30 is mounted horizontally forward and backward.

However, in the above-described horizontal movement apparatus of the headrest, the cover 80 is linearly moved by a pair of links 90 arranged before and after the horizontal movement mechanism 100 when the headrest is operated. When the toenail 51 of the member 50 reaches the end of the gear tooth 21 of the ratchet member 20, the toenail 51 is separated from the gear tooth 21 by the continuous pressing force and the second torsion spring 60. The horizontal movement mechanism 100 is configured to return to its original state, and the linear movement and return process of the headrest by the pair of links 90 is performed only by continuous linear movement of the horizontal movement mechanism 100. As a result, there is a problem that the width of the cover 80 must be correspondingly large to correspond to the linear movement width of the horizontal movement mechanism, and the headrest of the prior art includes an inclination adjusting member, a horizontal movement mechanism, and the like. As complicated There is a structure when making the manufacturing cost and manufacturing time, and is increased and had a problem such that the operation efficiency drops accordingly.

The present invention has been made to solve such a problem, the headrest is linearly moved to one side and rotated by a predetermined angle at one end, and at the same time to be returned to its original state by the spring force of the spring can significantly reduce the width of the cover width It is also an object of the present invention to provide a headrest having a simple structure.

1 is a main perspective view showing a horizontal movement device of the headrest according to the prior art.

Figures 2a and 2b is a schematic view showing the main parts showing a state in which the horizontal moving device of FIG.

3 is a perspective view showing an embodiment of a headrest according to the present invention.

4 is an exploded perspective view of FIG. 3.

5A to 5D are schematic views showing a state in which the headrest of FIG. 3 is operated.

6 is a perspective view showing another embodiment of the headrest according to the present invention.

Figure 7 is an exploded perspective view showing another embodiment of the headrest according to the present invention.

8 is a schematic diagram showing main parts of another embodiment of the headrest according to the present invention.

9 and 10 are a perspective view and an exploded perspective view showing another embodiment of the headrest according to the present invention.

11 is a schematic diagram showing main parts of another embodiment of a headrest according to the present invention.

12 is a perspective view showing another embodiment of the headrest according to the present invention.

13 is a perspective view showing another embodiment of the headrest according to the present invention.

14 is an exploded perspective view of FIG. 13.

15A to 15F are schematic views showing a state in which the headrest of FIG. 13 is operated.

16 is a perspective view showing another embodiment of the headrest according to the present invention.

17 is an exploded perspective view of FIG. 16.

18A to 18F are schematic views showing a state in which the headrest of FIG. 16 is operated.

19 is a perspective view showing another embodiment of the headrest according to the present invention.

20 is an exploded perspective view of FIG. 19.

21A to 21F are schematic views showing a state in which the headrest of FIG. 19 is operated.

22 is a perspective view showing another embodiment of the headrest according to the present invention.

FIG. 23 is an exploded perspective view of FIG. 22.

24A to 24E are schematic views illustrating a state in which the headrest of FIG. 22 is operated.

** Description of the symbols for the main parts of the drawings **

10: stay rod 11: horizontal portion

12: vertical portion 20: ratchet member

21: gear tooth 22: step

30: tilt adjustment member 40: the first torsion spring

50: blocking member 51: claw

52: claw 60: second torsion spring

80: cover 90: link

100: horizontal moving mechanism 110: vertical bar

112: horizontal bar 114: stay rod

116: fixed gear 116a: gear teeth

116b: locking jaw 116c: spring support hole

118: connection link 118a: spring support hole

120: rotating gear part 120a: gear teeth

120b: locking projection 120c: spring support hole

121: spring 122: moving bar

123: spring 124: moving part

124a: bending surface 126: cover

128: Hoedong-gu 128a: close contact

128b: Long hole 128c: Long hole forming groove

128d: 1st panel 128e: 2nd panel

130: stay rod 132: vertical bar

134: horizontal bar 136: vertical bar

138: bracket portion 140: fixed gear portion

140a: Gear 142: Rotating Gear

142a: Gear tooth 144: Link support

144a: low protrusion 146: spring

150: Hoedong-gu 150a: Jang Gong

152: fixed gear 154: moving bar

156: fixed gear part 156a: gear tooth

158: rotating gear unit 158a: gear tooth

160: Link support 160a: Jersey protrusion

162: spring 164: fixed gear

166: horizontal bar 168: moving bar

170: spring 172: rotation hole

174: connection link 176: return spring

178: fixed gear part 180: rotating gear part

182: Link support 184: Hoedong-gu

186: Link 188: Hoedong-gu

188a: Jang 190: Stay rod

192: horizontal bar 194: moving bar

196: Link Support 198: Link

200: return spring 202: fixed gear part

204: fixed gear part 206: rotating gear part

208: gear support 209: support rod

210: Hoedong-gu

The headrest of the present invention for achieving the above object is a stay rod provided on the seat and provided with a pair of vertical bars spaced a predetermined distance and a horizontal bar connecting the upper end of the vertical bar, and on both ends of the horizontal bar of the stay rod A fixed gear part fixedly installed, a connecting link having one end hinged to the fixed gear part, a rotating gear part axially rotatably coupled to the fixed gear part on the connecting link, and the connecting link and the rotating machine A spring provided between the fisherman and the spring gear for elastically rotating the rotating gear part at a predetermined angle so that the gear teeth of the fixed gear part and the rotating gear part are engaged with and separated from each other; A moving part having a bar, and a spring and an upper part supported between the moving bar and the horizontal bar to pull the moving bar downward One end is hinged to the horizontal bar of the stay rod, and the other end includes a rotation hole that wraps at a predetermined interval above the outer peripheral portion of the moving bar.

The headrest of the present invention includes a stay rod having a pair of vertical bars spaced a predetermined distance apart from each other and a horizontal bar connecting the upper ends of the vertical bars, and bracket portions fixedly installed at both ends of the horizontal bars of the stay rods. And a fixed gear portion, a connecting link having one end hinged to the bracket portion and the fixed gear portion, a rotating gear portion axially coupled to the fixed link of the fixed gear portion, and engaged with the fixed gear portion, and the connecting link. And a spring provided between the rotating gear part and the fixed gear part and the gear part of the rotating gear part to elastically rotate the rotating gear part at a predetermined angle so as to be engaged with and separated from each other, and hinged to the other end of the connecting link and parallel to the horizontal bar A moving part having a moving bar arranged and supported between the moving bar and the horizontal bar and pulling the moving bar downward Spring and one end hinged to the horizontal bar of the stay rod and the other end at predetermined intervals in the peripheral portion above the moving bar includes a wrap-gu times.

In addition, the headrest of the present invention is a seat rod mounted on the seat and a pair of vertical bars spaced a predetermined distance and a horizontal bar connecting the upper end of the vertical bar is provided, and the link support is fixed to both ends of the horizontal bar of the stay rod, respectively A connecting link having one end hinged to the link support, a rotating gear portion axially coupled to the link support, a fixed gear portion fixedly coupled to the connecting link and engaged with the rotating gear portion, A spring provided between the link support and the rotational gear portion to rotate the rotational gear portion at a predetermined angle so that the gears of the fixed gear portion and the rotational gear portion are engaged with and separated from each other, and hinged to the other end of the connection link, respectively, A moving part having a moving bar arranged in parallel and supported between the moving bar and the horizontal bar and moving the moving bar downward; One end is hinged to the spring and the horizontal bar of the pull rod, and the other end includes a rotation hole that wraps at a predetermined interval above the outer peripheral portion of the moving bar.

In addition, in the headrest according to the present invention, the pivoting hole is covered with the front and rear of the horizontal bar and the moving bar is provided with a close groove to closely wrap the horizontal bar, and a long hole forming groove for forming a long hole in the outer circumference of the moving bar, respectively It is preferred to consist of one or two panels.

In addition, the headrest of the present invention is a seat rod mounted on the seat and a pair of vertical bars spaced a predetermined distance and a horizontal bar connecting the upper end of the vertical bar and a fixed gear fixed to each of the horizontal bars of the stay rod, respectively And a connecting link having one end hinged to the fixed gear portion, a rotating gear portion axially coupled to the fixed link portion and engaged with the fixed gear portion, and a fixed gear provided between the connecting link and the rotating gear portion. A moving part having a spring for rotating the rotating gear part elastically at a predetermined angle so that the gear teeth of the part and the rotating gear part are engaged with and separated from each other, and a moving bar hinged to the other end of the connecting link and arranged in parallel with the horizontal bar; One end is hinged to the spring and the fixed gear which are supported between the movable bar and the horizontal bar to pull the movable bar downward. It includes a pivoting port connected to the other end is wrapped at a predetermined interval above the outer peripheral portion of the moving bar.

In addition, in the headrest according to the present invention, it is preferable that the pivoting holes are provided on both side fixed gear parts, respectively.

In addition, in the headrest according to the present invention, it is preferable that both side fixed gear parts are connected to each other to be integrated.

In addition, the headrest of the present invention is a seat rod mounted on the seat and a pair of vertical bars spaced a predetermined distance and a horizontal bar connecting the upper end of the vertical bar is provided, and the link support is fixed to both ends of the horizontal bar of the stay rod, respectively A connecting link having one end hinged to the link support, a rotating gear portion axially coupled to the link support, a fixed gear portion fixedly coupled to the connecting link and engaged with the rotating gear portion, A spring provided between the link support and the rotational gear portion to rotate the rotational gear portion at a predetermined angle so that the gear teeth of the fixed gear portion and the rotational gear portion are engaged with and separated from each other, and hinged to the other end of the connection link, respectively, A moving part having a moving bar arranged in parallel, and supported between the moving bar and the horizontal bar to move the moving bar downward; Oh and one end hinged to the pull spring and the link support, and the other end comprises a wrapping times gu at predetermined intervals in the peripheral portion above the moving bar.

In addition, in the headrest according to the present invention, it is preferable that the pivoting holes are provided on both side link supports, respectively.

In addition, in the headrest according to the present invention, it is preferable that both side link supports are integrated with each other.

The headrest of the present invention includes a stay rod provided with a pair of vertical bars spaced a predetermined distance apart from each other and a horizontal bar connecting the upper end of the vertical bar, and a fixed gear part fixedly installed on the horizontal bar of the stay rod. And a connecting link having one end hinged to the fixed gear, a rotating gear coupled to the fixed link by being axially coupled to the connecting link, and a fixed gear provided between the connecting link and the rotating gear. A spring for rotating the rotating gear part elastically at a predetermined angle so that the gear teeth of the rotating gear part are engaged with and separated from each other, a moving part having a moving bar hinged to the other end of the connecting link and arranged in parallel with the horizontal bar; One end hinged to the gear part, the other end of which is rotated at a predetermined interval above the outer circumference of the moving bar; Is held between the mobile times described are supported between gu movement bar fixed to pull the spring downward, and the connecting link and the gear unit comprises a return spring to return to its original position the connecting link moves linearly.

The headrest of the present invention includes a stay rod provided with a pair of vertical bars spaced a predetermined distance apart from each other and a horizontal bar connecting the upper end of the vertical bar, and a link support fixedly installed on the horizontal bar of the stay rod. A connecting link having one end hinged to the link support, a rotating gear portion axially coupled to the link support, a fixed gear portion fixedly coupled to the connecting link and engaged with the rotating gear portion, the link; A spring provided between the support and the rotating gear part to rotate the rotating gear part at a predetermined angle so that the gear teeth of the fixed gear part and the rotating gear part are engaged with and separated from each other, and hinged to the other end of the connecting link and parallel to the horizontal bar. A moving part having a movable bar arranged at one end, one end of which is hinged to the link support, and the other end of the moving bar Rotating opening that wraps at a predetermined interval upward and the outer circumference, and is supported between the moving bar and the rotating opening to pull the moving bar downward, and is supported between the connecting link and the link support to return the linearly connected connecting link to its original state. Contains a return spring.

The headrest of the present invention includes a stay rod having a pair of vertical bars spaced a predetermined distance apart from each other and a horizontal bar connecting the upper ends of the vertical bars, and a fixed gear part fixedly installed on the horizontal bars of the stay rods. And a rotating ball disposed on both sides of the fixed gear part, one end of which is hinged on a horizontal bar of the stay rod, and a long hole formed at the other end thereof, and the fixed gear part being axially coupled to the rotating hole. A spring which rotates the rotating gear part at a predetermined angle so that the rotating gear part meshed with the rotating gear part is provided between the rotating tool part and the rotating gear part so that the gear teeth of the fixed gear part and the rotating gear part engage with each other and are separated from each other; A moving part having a moving bar passing through and arranged in parallel with the horizontal bar, and a linker fixedly installed on horizontal bars that are both sides of the pivoting hole. A connecting link having one end hinged to the link support and the other end hinged to the moving part, a spring supported between the moving bar and the link support to pull the moving bar downward, and the pivoting hole and the fixed gear And a return spring which is supported between the parts and returns the linearly moved pivot.

The headrest of the present invention includes a stay rod provided with a pair of vertical bars spaced a predetermined distance apart from each other and a horizontal bar connecting the upper end of the vertical bar, and a gear support fixedly installed on the horizontal bar of the stay rod. A rotating gear part axially coupled to the gear support, a rotating hole disposed on both sides of the gear support, one end of which is hinged to the horizontal bar of the stay rod, and the other end of which has a long hole; The rotation gear part is fixedly installed at the rotational hole to be engaged with the rotation gear part, and is provided between the gear support and the rotation gear part so that the gear tooth of the fixed gear part and the rotation gear part are engaged with and separated from each other. A moving part having a spring for rotating in a direction, a moving bar penetrating the long hole of the pivot, and arranged in parallel with the horizontal bar; A link support fixedly installed on horizontal bars on both sides of the pivot, a link linking one end of which is hinged to the link support and the other end of which is hinged to the moving part, and is supported between the moving bar and the link support and moved It includes a spring for pulling the bar downward and a return spring supported between the pivot hole and the gear support to return the linearly moved pivot to its original state.

In addition, in the headrest according to the present invention, it is preferable that the vertical bar of the stay rod is made of a pipe penetrated up and down.

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

As shown in Figure 3 to 4, the headrest according to an embodiment of the present invention is mounted on the seat and the stay rod 114 and the horizontal bar is provided with a pair of vertical bar 110 and horizontal bar 112, horizontal bar (112) a fixed gear portion 116 fixedly installed at both ends, a connecting link 118 having one end hinged to the fixed gear portion 116, and a rotational rotation coupling on the connecting link 118. The synchronizing gear portion 120, the spring 121 interposed between the connecting link 118 and the rotating gear portion 120, and the other end of the connecting link 118 is hinged and respectively, the moving bar 122 One end portion is hinged to the moving portion 124 having, the spring 123 for pulling down the movement bar 122 and the horizontal bar 112 of the stay rod 114, and the other end thereof is the movement bar ( The rotating hole 126 which wraps around the outer peripheral part of 122 is comprised.

The stay rod 114 is a dip rod-shaped steel rod, which is mounted on a seat and comprises a pair of vertical bars 110 spaced a predetermined distance apart and a horizontal bar 112 connecting upper ends of the vertical bars 110. .

The fixed gear portion 116 is a plate shape fixed to the both ends of the horizontal bar 112 of the stay rod 114, respectively, the upper surface of the gear teeth engaged with the gear teeth (120a) of the rotation gear portion ( 116a is formed, and at one end of the gear tooth 116a, a locking jaw 116b is formed to engage the locking projection 120b of the rotation gear 120.

In addition, a spring support hole 116c is formed at one side of the fixed gear part 116 to support a lower end of the spring 123 that pulls the moving bar 122 of the moving part 124 downward.

The connecting link 118 is a rod-shaped lower end is hinged to the lower end of the fixed gear portion 116 through a rivet joint, etc., the upper end is hinged to the moving portion 124 and the central portion is fixed gear portion ( The rotating gear part 120 meshed with 116 is hinged.

In addition, a spring support hole 118a is formed at a predetermined upper end of the connection link 118 to support one end of the spring 121 for rotating the rotation gear 120 at a predetermined angle.

The rotation gear portion 120 is a plate shape that is axially rotated on the connecting link 118 to be engaged with the fixed gear portion 116, the bottom surface is engaged with the gear teeth 116a of the fixed gear portion 116. The gear teeth 120a are formed, and the rotary gear part 120 is rotated by a predetermined angle at one end thereof so that the gear teeth 116a and 120a are separated, and in this state, the moving part 124 is returned to its original state. During the return, the locking projection 120b is formed while being caught by the locking jaw 116b of the fixed gear unit 116 to rotate the rotating gear unit 120 again so that the gear teeth 116a and 120a are engaged. It is.

In addition, at a predetermined upper end of the rotating gear part 120, a spring support hole 120c is formed in which the other end of the spring 121 supported by the spring support hole 118a of the connection link 118 is inserted and supported. have.

Between the connecting link 118 and the rotating gear part 120, the gear 116a and 120a of the fixed gear part 116 and the rotating gear part 120 are engaged with each other to proceed in one direction by pressing. When the gear teeth 120a of the rotation gear part 120 are caught by the locking jaws 116b of the fixed gear part 116, the gear teeth of the rotation gear part 120 are driven by the pressing force continued to the moving part 124. The spring 121 is pushed by the locking jaw 116b and is elastically rotated at a predetermined angle so as to be separated from the gear tooth 116a of the fixed gear part 116. Here, it is preferable that the spring 121 uses an opening ring-shaped line spring.

The moving part 124 is a right angled bent plate shape which is hinged to the other end of the connecting link 118, respectively, and are disposed in parallel with the horizontal bar 112 of the stay rod 114 between the plate of both sides The moving bar 122 is connected.

Here, the bent surface 124a of the moving part 124 is preferably connected to the inner surface of the cover 126 integrally.

In addition, between the movable bar 122 and the fixed gear unit 116, one end thereof is caught by the outer circumferential surface of the movable bar 122 to pull the movable bar 122 downward, and the other end thereof is fixed to the fixed gear unit ( The spring 123 supported by the spring support hole 116c of 116 is supported. The other end of the spring 123 may be supported by the horizontal bar 112 in addition to being supported by the spring support hole 116c of the fixed gear unit 116. Here, it is preferable that the spring 123 uses a tension spring.

The rotating hole 128 has a shape in which one end is hinged to the horizontal bar 112 of the stay rod 114 and the other end surrounds the outer circumferential part of the moving bar 122. 128 is covered with the front and rear of the horizontal bar 112 and the moving bar 122, the close contact groove (128a) that wraps close to the horizontal bar 112, and the moving bar to secure the vertical rotation of the moving bar 122 It consists of the first and second panels 128d and 128e provided with the long hole forming grooves 128c for forming the long holes 128b in the up and down direction at the outer circumference of the 122, respectively. 128e) is fastened by fasteners, such as a bolt.

According to one embodiment of the headrest of the present invention according to this configuration, the fixed gear portions 116 are fixedly installed at both ends of the horizontal bar 112 of the stay rod 114, respectively, and predetermined upward from the horizontal bar 112. The moving part 124 is disposed at a distance spaced apart, and the connecting link 118 is connected to the fixed gear part 116 and the moving part 124 on both sides of the horizontal bar 112, and again with the moving part 124. The rotation hole 128 is connected to the horizontal bar 112. In addition, the rotation gear part 120 is installed in the connecting link 118 to be engaged with the fixed gear part 116 and supported by a spring 121, and the moving part 124 and the fixed gear part 116 The head support structure is completed by supporting the spring 123 that pulls the movement bar 122 downward to the spring support hole 116c.

In addition, the cover 126 is covered with the outside of the headrest structure to connect with the moving part 124 and the headrest is completed through the foaming operation and the outer covering operation on the cover 126.

The operation of this headrest is as follows.

As shown in FIGS. 5A to 5D, when the headrest is first pressed toward the rear head of the occupant, the moving part 124 integrally connected with the cover 126 moves linearly, and at the same time, the moving part 124 Rotating opening 128 connected to the connecting link 118 and the moving bar 122 is connected to the spring 123 supporting the moving bar 122 is tensioned to hold the moving bar 122 elastically Pulled.

In addition, the rotation gear unit 120 installed on the connection link 118 is moved in a state of maintaining engagement with the fixed gear unit 116 by a spring force.

When the rotation gear 120 moves along the fixed gear 116 and the gear tooth 120a of the rotation gear 120 reaches the locking jaw 116b of the fixed gear 116, it is no longer engaged. In this case, the moving part 124 axially rotates the connecting link 118 by the continuous pressing force, and the pressing force exceeds the strength of the spring 121 that supports the rotating gear part 120. The rotation gear unit 120 is separated from the fixed gear unit 116 while being rotated by a predetermined angle.

In the above operation, the rotation gear unit 120 is moved along the fixed gear unit 116, and the gear tooth 120a of the rotation gear unit 120 is caught by the fixed gear unit 116. At the same time, the inner side of the cover 126 contacts the fixed gear part 116 and the linear movement of the moving part 124 is no longer progressed. At this time, the moving part ( The cover 126 connected to the 124 axially rotates the connecting link 118 to the shaft so that the inner side of the cover 126 falls from the fixed gear part 116 and the pressing force supports the rotating gear part 120 ( 121) the rotational gear 120 is separated from the fixed gear 116 in a state where the rotation gear 120 is rotated by a predetermined angle while surpassing the strength.

Here, the rotation gear 120 rotated by a predetermined angle maintains the elastically supported state by the spring 121 force again.

Then, as described above, when the rotation gear unit 120 is separated from the fixed gear unit 116 and rotated by a predetermined angle, when the pressing force is removed, the movement is performed by the force of the spring 123 that elastically supports the movement bar 122. The portion 124 is returned to its original state and at the same time, the gear teeth 120a of the rotation gear portion 120 are meshed again with the distal ends of the gear teeth 116a of the fixed gear portion 116.

Meanwhile, while the moving part 124 is linearly moved, the moving bar 122 is positioned at the lower end of the long hole 128b of the pivoting hole 128 by the strength of the spring 123, and then the moving part 124 is rotated. While the moving bar 122 is moved to the upper position of the long hole (128b). In addition, when the moving part 124 is linearly moved and finally rotated axially, and then returned to its original state by the tension force of the spring 123 after the axial rotation, the moving bar 122 returns to the lower end of the long hole 128b. Will be located.

As described above, the headrest of the present invention is a linear motion that goes straight in one direction by the long hole 128b of the single link link 118 and the turning hole 128, and the fixed gear portion (axially rotating at the last stage of the linear motion) A shaft rotational motion that separates the engagement between the 116 and the rotation gear unit 120 and returns to its original state by the anti-elasticity of the spring 123 is applied in combination.

Figure 6 shows another embodiment of the headrest of the present invention, the stay rod 130 is a vertical bar 132 and the horizontal bar 134 of one side is a steel bar bent at right angles, the other vertical bar 136 is a tubular shape that penetrates up and down, and an upper end thereof is joined to an end of the horizontal bar 134. Here, a cable for applying power through the tubular vertical bar 136 may pass through.

Figure 7 shows another embodiment of the headrest of the present invention, the fixed gear portion 116 and the rotating gear portion 120 is provided only on one side of the link link 118, the other side of the link link 118 Shows a state connected to the bracket portion 138.

8 is a view showing another embodiment of the headrest of the present invention, and shows a state in which the positions of the fixed gear unit 140 and the rotation gear unit 142 are reversed up and down, where the fixed gear unit 140 is present. Link support 144 is added for the tilting operation of the rotating gear unit 142. In addition, between the link support 144 and the rotating gear part 142, the fixed gear part 140 and the gear teeth 140a and 142a of the rotating gear part 142 are engaged with each other and are separated from each other. The spring 146 which rotates 142 elastically at a predetermined angle is provided. Here, reference numeral 144a denotes a stopping protrusion that prevents rotation of the rotating gear part 142.

9 and 10 show another embodiment of the headrest according to the present invention, and the rotation hole 128, which has been applied in the embodiments of FIGS. Link-shaped rotating hole 150 to perform the same function is provided, the lower end of the rotating hole 150 is hinged to the fixed gear portion 152 and the long hole 150a of the upper end of the moving bar 154 It is to be wrapped at a predetermined interval above the outer peripheral portion. In addition, the pivoting holes 150 may be hinged to both side fixed gear parts 152 to support the moving bar 154.

FIG. 11 is a view illustrating another embodiment of the headrest of FIGS. 9 and 10, in which positions of the fixed gear unit 156 and the rotation gear unit 158 are reversed up and down. Here, the fixed gear unit 156 is shown. ) And a link support 160 for the tilting operation of the rotating gear unit 158. In addition, between the link support 160 and the rotary gear unit 158, the fixed gear unit 156 and the gear teeth 156a and 158a of the rotary gear unit 158 are engaged with each other and are separated from each other. A spring 162 is provided to elastically rotate the 158 at a predetermined angle. Here, reference numeral 160a denotes a stopping protrusion that prevents rotation of the rotating gear unit 158.

FIG. 12 illustrates another embodiment of the headrest of FIGS. 9 and 10, in which the fixed gear parts 164 of both sides are connected to each other to be integrally formed. Here, the fixed gear parts 164 on both sides are moved to the center of the horizontal bar 166 to have an integral shape connected to each other, and one of the springs 170 supporting the moving bar 168 is deleted.

13 to 15f show another embodiment of the headrest according to the present invention, in which the pivoting hole 172 and the linking link 174 are each formed in an integral shape having a declination shape, and linear movement. A return spring 176 is further provided to allow the connected link 174 to elastically return to its original state.

16 to 18F illustrate another embodiment of the headrest according to the present invention, wherein the positions of the fixed gear part 178 and the rotation gear part 180 are changed in the heat rest of FIG. 13. As the fixed gear part 178 and the rotation gear part 180 are changed in position, the rotation gear part 180, the rotation hole 184, and the connection link 186 are hingedly connected to the link support 182 provided separately. have.

19 to 21e illustrate yet another embodiment of the headrest according to the present invention, and the lower end of the pair of pivot holes 188 having the upper end bent inward and the plate shape is a horizontal bar of the stay rod 190 ( Directly hinged on the 192 and forms a long hole (188a) on the top to support the moving bar 194 and to connect the upper ends of each other to integrate. In addition, the link support 196 is fixedly installed on the horizontal bars 192 that are both sides of the rotation hole 188 so that the connection link 198 is hinged, and the elasticity of the linearly moved rotation hole 188 is fixed. The return spring 200 is supported between the pivoting hole 188 and the fixed gear part 202 for the original return.

22 to 24e show another embodiment of the headrest according to the present invention, in which the positions of the fixed gear part 204 and the rotation gear part 206 are changed in the headrest of FIG. 19. Here, a separate gear support 208 is provided in accordance with the position change of the fixed gear portion 204 and the rotating gear portion 206, the fixed gear portion 204 is a rotating hole 210 by the support rod 209 It is fixed to the inner central portion of the c), a pair of rotating holes 210 having a needle-shaped shape are joined in a state where they overlap each other, thereby forming a rotating hole 210 having a declination shape.

As described above, the headrest of the present invention is provided with a single rotation link at each end of the horizontal bar of the stay rod and a pivoting hole having a long hole at the center of the horizontal bar, and the moving part is linearly moved in one direction and at one end. By returning to the original state by anti-elasticity after being rotated by a predetermined angle, the width of the headrest cover can be greatly reduced, and at the same time, the headrest structure is simplified.

Claims (15)

A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A fixed gear part fixedly installed at both ends of the horizontal bar of the stay rod; A connecting link having one end hinged to the fixed gear; A rotation gear part axially coupled to the connection link and engaged with the fixed gear part; A spring provided between the connecting link and the rotating gear part so as to elastically rotate the rotating gear part at a predetermined angle so that the gear teeth of the fixed gear part and the rotating gear part are engaged with and separated from each other; A moving part hinged to the other end of the connection link and having a moving bar arranged in parallel with the horizontal bar; A spring supported between the movable bar and the horizontal bar to pull the movable bar downward; And A pivoting hole whose one end is hinged to the horizontal bar of the stay rod and whose other end is wrapped around the outer circumference of the moving bar at a predetermined interval; Headrest comprising a. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A bracket part and a fixed gear part fixedly installed at both ends of the horizontal bar of the stay rod; A connecting link having one end hinged to the bracket part and the fixed gear part; A rotation gear part which is axially rotated on the connection link of the fixed gear part and meshes with the fixed gear part; A spring provided between the connecting link and the rotating gear part so as to elastically rotate the rotating gear part at a predetermined angle so that the gear teeth of the fixed gear part and the rotating gear part are engaged with and separated from each other; A moving part hinged to the other end of the connection link and having a moving bar arranged in parallel with the horizontal bar; A spring supported between the movable bar and the horizontal bar to pull the movable bar downward; And A pivoting hole whose one end is hinged to the horizontal bar of the stay rod and whose other end is wrapped around the outer circumference of the moving bar at a predetermined interval; Headrest comprising a. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A link support fixedly installed at both ends of the horizontal bar of the stay rod; A connecting link having one end hinged to the link support; A rotating gear unit axially coupled to the link support; A fixed gear part which is fixedly coupled to the connection link and meshes with the rotation gear part; A spring provided between the link support and the rotational gear portion to elastically rotate the rotational gear portion at a predetermined angle so that the gear teeth of the fixed gear portion and the rotational gear portion are engaged with and separated from each other; A moving part hinged to the other end of the connection link and having a moving bar arranged in parallel with the horizontal bar; A spring supported between the movable bar and the horizontal bar to pull the movable bar downward; And A pivoting hole whose one end is hinged to the horizontal bar of the stay rod and whose other end is wrapped around the outer circumference of the moving bar at a predetermined interval; Headrest comprising a. According to any one of claims 1 to 3, wherein the rotating sphere is covered with the front and rear of the horizontal bar and the moving bar close contact with the horizontal bar, and the long hole forming groove for forming a long hole in the outer peripheral portion of the moving bar Headrest, characterized in that consisting of first and second panels provided respectively. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A fixed gear part fixedly installed at both ends of the horizontal bar of the stay rod; A connecting link having one end hinged to the fixed gear; A rotation gear part axially coupled to the connection link and engaged with the fixed gear part; A spring provided between the connecting link and the rotating gear part so as to elastically rotate the rotating gear part at a predetermined angle so that the gear teeth of the fixed gear part and the rotating gear part are engaged with and separated from each other; A moving part hinged to the other end of the connection link and having a moving bar arranged in parallel with the horizontal bar; A spring supported between the movable bar and the horizontal bar to pull the movable bar downward; And A rotational hole of which one end is hinged to the fixed gear and the other end is wrapped around the outer circumference of the moving bar at a predetermined interval; Headrest comprising a. The headrest according to claim 5, wherein the pivots are provided on both side fixed gear parts, respectively. The headrest according to claim 5, wherein the both side fixed gear portions are connected to each other to be integrated. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A link support fixedly installed at both ends of the horizontal bar of the stay rod; A connecting link having one end hinged to the link support; A rotating gear unit axially coupled to the link support; A fixed gear part which is fixedly coupled to the connection link and meshes with the rotation gear part; A spring provided between the link support and the rotational gear portion to elastically rotate the rotational gear portion at a predetermined angle so that the gear teeth of the fixed gear portion and the rotational gear portion are engaged with and separated from each other; A moving part hinged to the other end of the connection link and having a moving bar arranged in parallel with the horizontal bar; A spring supported between the movable bar and the horizontal bar to pull the movable bar downward; And A pivoting hole having one end hinged to the link support and the other end of which is wrapped at a predetermined interval above the outer circumference of the moving bar; Headrest comprising a. 9. The headrest according to claim 8, wherein the pivot holes are provided on both side link supports, respectively. 9. The headrest according to claim 8, wherein both side link supports are integrally connected to each other. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A fixed gear part fixedly installed on a horizontal bar of the stay rod; A connecting link having one end hinged to the fixed gear; A rotation gear part axially coupled to the connection link and engaged with the fixed gear part; A spring provided between the connecting link and the rotating gear part so as to elastically rotate the rotating gear part at a predetermined angle so that the gear teeth of the fixed gear part and the rotating gear part are engaged with and separated from each other; A moving part hinged to the other end of the connection link and having a moving bar arranged in parallel with the horizontal bar; A rotational hole of which one end is hinged to the fixed gear and the other end is wrapped around the outer circumference of the moving bar at a predetermined interval; A spring supported between the moving bar and the rotational opening to pull the moving bar downward; And A return spring supported between the connection link and the fixed gear part to return the linearly moved connection link to its original state; Headrest comprising a. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A link support fixedly installed on a horizontal bar of the stay rod; A connecting link having one end hinged to the link support; A rotating gear unit axially coupled to the link support; A fixed gear part which is fixedly coupled to the connection link and meshes with the rotation gear part; A spring provided between the link support and the rotational gear portion to elastically rotate the rotational gear portion at a predetermined angle so that the gear teeth of the fixed gear portion and the rotational gear portion are engaged with and separated from each other; A moving part hinged to the other end of the connection link and having a moving bar arranged in parallel with the horizontal bar; A pivoting hole having one end hinged to the link support and the other end of which is wrapped at a predetermined interval above the outer circumference of the moving bar; A spring supported between the moving bar and the rotational opening to pull the moving bar downward; And A return spring supported between the link link and the link support to return the link link linearly moved; Headrest comprising a. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A fixed gear part fixedly installed on a horizontal bar of the stay rod; A rotation hole disposed at both sides of the fixed gear part, one end of which is hinged on a horizontal bar of the stay rod, and a long hole formed at the other end thereof; A rotation gear part axially coupled to the rotation hole to be engaged with the fixed gear part; A spring provided between the rotational hole and the rotational gear portion to elastically rotate the rotational gear portion at a predetermined angle so that the gear teeth of the fixed gear portion and the rotational gear portion are engaged with and separated from each other; A moving part having a moving bar penetrating through the long hole of the rotating hole and arranged in parallel with the horizontal bar; A link support fixedly installed on horizontal bars on both sides of the pivoting hole; A connecting link having one end hinged to the link support and the other end hinged to the moving part; A spring supported between the movable bar and the link support to pull the movable bar downward; And A return spring supported between the rotational sphere and the fixed gear part to return the linearly moved rotational sphere to its original state; Headrest comprising a. A stay rod mounted on the seat and provided with a pair of vertical bars spaced a predetermined distance from each other and a horizontal bar connecting the upper ends of the vertical bars; A gear support fixedly installed on a horizontal bar of the stay rod; A rotating gear unit axially coupled to the gear support; A rotation hole disposed at both sides of the gear support, one end of which is hinged on a horizontal bar of the stay rod, and a long hole formed at the other end thereof; A fixed gear part which is fixedly installed at the rotating hole and meshes with the rotating gear part; A spring provided between the gear support and the rotational gear portion to rotate the rotational gear portion at a predetermined angle such that the gear teeth of the fixed gear portion and the rotational gear portion are engaged with and separated from each other; A moving part having a moving bar penetrating through the long hole of the rotating hole and arranged in parallel with the horizontal bar; A link support fixedly installed on horizontal bars on both sides of the pivoting hole; A connecting link having one end hinged to the link support and the other end hinged to the moving part; A spring supported between the movable bar and the link support to pull the movable bar downward; And A return spring supported between the rotational hole and the gear support to return the linearly moved rotational hole to its original state; Headrest comprising a. 15. The headrest according to any one of claims 1 to 3 and 5 to 14, wherein the vertical bars of the stay rods are made of pipes penetrating upward and downward.