KR101916916B1 - The folding device of the headrest - Google Patents

The folding device of the headrest Download PDF

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Publication number
KR101916916B1
KR101916916B1 KR1020160113836A KR20160113836A KR101916916B1 KR 101916916 B1 KR101916916 B1 KR 101916916B1 KR 1020160113836 A KR1020160113836 A KR 1020160113836A KR 20160113836 A KR20160113836 A KR 20160113836A KR 101916916 B1 KR101916916 B1 KR 101916916B1
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KR
South Korea
Prior art keywords
locking
bracket
plate
locking portion
lock
Prior art date
Application number
KR1020160113836A
Other languages
Korean (ko)
Other versions
KR20180026908A (en
Inventor
정해일
Original Assignee
주식회사 우보테크
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Application filed by 주식회사 우보테크 filed Critical 주식회사 우보테크
Priority to KR1020160113836A priority Critical patent/KR101916916B1/en
Priority to PCT/KR2017/009356 priority patent/WO2018044009A1/en
Publication of KR20180026908A publication Critical patent/KR20180026908A/en
Application granted granted Critical
Publication of KR101916916B1 publication Critical patent/KR101916916B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/841—Tiltable characterised by their locking devices
    • B60N2/844—Release mechanisms, e.g. buttons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/841—Tiltable characterised by their locking devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/856—Tiltable movable to an inoperative or stowed position
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/806—Head-rests movable or adjustable
    • B60N2/838—Tiltable
    • B60N2/856—Tiltable movable to an inoperative or stowed position
    • B60N2/859—Tiltable movable to an inoperative or stowed position specially adapted for rear seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/80—Head-rests
    • B60N2/894—Head-rests with rods solidly attached to the back-rest

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  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Seats For Vehicles (AREA)

Abstract

The present invention relates to a headrest folding apparatus, and more particularly to a headrest folding apparatus, which is capable of simplifying the structure by separating the pivotal center of the second locking portion locked and unlocked with the first locking portion and the position where the stay is connected to the second locking portion A headrest folding device capable of minimizing the number of parts and at the same time minimizing the incision in the headrest or the seat and having a second locking part for holding the first locking part separately from the stay, .

Description

The folding device of the headrest < RTI ID = 0.0 >

The present invention relates to a headrest folding apparatus, and more particularly to a headrest folding apparatus in which a pivot center of a second locking portion locked or unlocked to a first locking portion and a position where a stay is connected to the second locking portion are spaced apart .

Since the headrest can be adjusted in height and front and rear positions, it can not be completely laid down. Therefore, even when the vehicle is operated without any occupant, such as in the back seat, The rear view of the driver of the seat or the seat occupant next to the seat is obstructed as well as obstructing the safe driving.

In view of such a problem, a headrest device (U.S. Patent No. 6,302,485) has been invented in order to allow a passenger to see the headrest by laying down the headrest of a seat without a passenger, Includes a head supporting member 1 supported by an inner frame 3 of a seat back 2 by a stay rod 5 as shown in Figure 1 and having a horizontal portion 6 of the stay rod, So as to be in an upright state at the time of use and in a lying state (virtual line position) when not in use.

However, such a conventional folding device has a problem in that the length of the cut-out portion formed in the receiving member 1 is increased because the receiving member 1 is rotated about the horizontal portion 6 of the stay rod 5.

Korean Patent Registration No. 982796

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a stapler which can simplify the structure and reduce the number of parts, minimize the incision in the headrest or the seat, And to provide a headrest folding apparatus.

According to an aspect of the present invention, there is provided a headrest folding apparatus comprising: a bracket; a first locking portion connected to the bracket; a second locking portion rotatable with respect to the bracket, 2 locking portion and a stay connected to the second locking portion, wherein a headrest is connected to one of the bracket and the stay and a seat is connected to the other, and a pivot center of the second locking portion and the stay And a position connected to the second locking portion is spaced apart.

The first locking portion may be provided with a first ratchet, the first locking portion may be rotatable with respect to the bracket, and the second locking portion may be provided with a second ratchet.

Wherein the stay is disposed forward or rearward of the second locking portion when the headrest is in the unfolded state and a position at which the rotation center of the second locking portion and the stay are connected to the second locking portion Can be spaced apart.

The second locking portion is rotatably installed on the bracket by a second locking portion shaft. The second locking portion includes a first locking plate, a second locking plate bent on both sides of the first locking plate, Wherein the first locking plate is provided with a horizontal rod of the stay and the second locking plate and the third locking plate are provided with the second locking portion shaft, Wherein the return spring is formed on at least one of the second lock plate and the third lock plate and the return spring is provided on the second lock portion shaft when the first lock portion and the second lock portion are unlocked The second locking portion can be rotated with respect to the bracket.

The bracket includes a first bracket plate, a second bracket plate and a third bracket plate bent at both sides of the first bracket plate, and the first lock plate and the first bracket plate are disposed to face each other .

The stopper protrusion may be formed on the second lock plate and the third lock plate, and the stopper protrusion may be caught by the bracket when the second lock portion is locked to the first lock portion.

According to the headrest folding apparatus of the present invention as described above, the following effects can be obtained.

The pivotal center of the second lock portion locked or unlocked to the first lock portion and the position where the stay is connected to the second lock portion are spaced apart to simplify the structure and reduce the number of parts, And the second locking portion to which the first locking portion is attached is provided separately from the stay, so that the second locking portion can be commonly applied to the stay having various shapes. In addition, since the stay can be installed outside the second locking portion, the headrest folding apparatus of the present invention can be easily applied to a conventional stay having various shapes. In addition, since it is not necessary to install a bracket or a return spring on the stay, it is not necessary to attach the horizontal rod and the vertical rod through welding or the like after assembling each component to the horizontal rod of the stay, thereby simplifying the manufacturing process.

The first locking portion is provided as a first ratchet, the first locking portion is rotatable with respect to the bracket, and the second locking portion is provided with a second ratchet, so that the volume occupied by the locking device can be minimized, The lock state is maintained.

Wherein when the headrest is in the unfolded state, the horizontal rod of the stay is disposed forward or rearward of the second locking portion and the bracket, and the pivot center of the second locking portion and the stay are connected to the second locking portion Are spaced in the anteroposterior direction, the volume of the device can be minimized and the incision can be further minimized.

The second locking portion is rotatably installed on the bracket by a second locking portion shaft. The second locking portion includes a first locking plate, a second locking plate bent on both sides of the first locking plate, Wherein the first locking plate is provided with a horizontal rod of the stay and the second locking plate and the third locking plate are provided with the second locking portion shaft, Wherein the return spring is formed on at least one of the second lock plate and the third lock plate and the return spring is provided on the second lock portion shaft when the first lock portion and the second lock portion are unlocked The second locking portion is rotated with respect to the bracket so that modularization of the device can be made more effective and the stay can be installed on the plate member arranged in the left and right direction and stably installed in the second locking portion, The strength is improved.

The bracket includes a first bracket plate, a second bracket plate and a third bracket plate bent at both sides of the first bracket plate, and the first lock plate and the first bracket plate are disposed to face each other , The number of parts can be reduced, the manufacturing process can be further simplified, costs can be effectively reduced, and the device becomes compact.

When the second locking portion is locked to the first locking portion, the stopper projection is caught by the bracket, so that when the first and second ratchet plates are unfolded, The headrest can be stably supported by the stopper protrusions on both sides. In addition, when the headrest is moved to the unfolding position, the headrest is no longer rotated by the stopper projection, and the user does not move the headrest excessively.

1 is a side view schematically showing an example of a conventional headrest for a car.
2 is a perspective view of a headrest folding apparatus according to a first embodiment of the present invention;
3 is an exploded perspective view of a headrest folding apparatus according to a first embodiment of the present invention.
4 is a rear perspective view of a headrest folding apparatus according to a first embodiment of the present invention.
FIG. 5 is a side view showing the incision length of the headrest folding apparatus and the conventional headrest folding apparatus according to the first embodiment of the present invention; FIG.
FIG. 6 is a perspective view of a headrest folding apparatus according to a first embodiment of the present invention, as viewed from the left side (the bracket is omitted). FIG.
7 is a sectional view showing an unfolded state of the headrest folding apparatus according to the first embodiment of the present invention.
8 is a sectional view showing a folding state of the headrest folding apparatus according to the first embodiment of the present invention.
9 is a fragmentary perspective view of a headrest folding device according to a second embodiment of the present invention.
10 is a rear perspective view of a headrest folding apparatus according to a second embodiment of the present invention.
11 is a rear view of the headrest folding apparatus according to the second embodiment of the present invention.
FIG. 12 is a side view showing a state in which a headrest folding apparatus according to a third embodiment of the present invention is installed. FIG.
FIG. 13 is a side view showing a state in which a headrest folding apparatus according to a fourth embodiment of the present invention is installed. FIG.

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

For reference, the same components as those of the conventional art will be described with reference to the above-described prior art, and a detailed description thereof will be omitted.

If any part is referred to as being "on" another part, it may be directly on the other part or may be accompanied by another part therebetween. In contrast, when referring to a part being "directly above" another part, no other part is interposed therebetween.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Terms representing relative space, such as "below "," above ", and the like, may be used to more easily describe the relationship to another portion of a portion shown in the figures. These terms are intended to include other meanings or acts of the apparatus in use, as well as intended meanings in the drawings. For example, when inverting a device in the figures, certain parts that are described as being "below" other parts are described as being "above " other parts. Thus, an exemplary term "below" includes both up and down directions. The device may be rotated 90 degrees before or at another angle, and the term indicating relative space is interpreted accordingly.

The term "connection" includes all direct or indirect connections between connected components.

=================== < First Embodiment > ===================

2 to 8, the headrest folding apparatus of the first embodiment includes a bracket 110, a first locking part 120 connected to the bracket 110, And a stay (10) connected to the second locking part (130), wherein the bracket (130) is rotatable with respect to the first locking part (120) And a stay s is connected to one of the stay 10 and the stay 10 so that the pivot center of the second lock 130 and the stay 10 are spaced apart from each other, 2 locking portions 130 are separated from each other.

The headrest h is connected to one of the bracket 110 and the stay 10 and the seat s is connected to the other.

The stay 10 includes a horizontal rod 11 arranged in the left-right direction and a vertical rod 12 arranged on both sides of the horizontal rod 11 in the vertical direction. In this embodiment, the horizontal rod 11 and the vertical rod 12 are integrally formed.

In the present embodiment, the sheet s is connected to the bracket 110.

The bracket 110 is detachably attached to a frame (not shown) disposed on the upper side of the seat s.

The bracket 110 includes a first bracket plate 111 and a second bracket plate 112 and a third bracket plate 113 formed on both sides of the first bracket plate 111 to be bent rearward.

The first bracket plate 111 is formed into a long rectangular shape in the vertical direction.

The second bracket plate 112 and the third bracket plate 113 are provided at the rear ends thereof with fastening portions 115 protruding outward (left or right). The fastening part 115 is formed by bending the second bracket plate 112 and a rear end part of the third bracket plate 113 outwardly.

The fastening part 115 is formed with a fastening hole to which a fastening member such as a bolt can be fastened. The bracket 110 can be easily installed in the frame of the seat s through the fastening portion 115. The first bracket plate 111, the second bracket plate 112, the third bracket plate 113, and the fastening unit 115 are integrally formed to reduce the number of parts, thereby simplifying the manufacturing process and reducing the cost effectively .

The first locking portion 120 is connected to the bracket 110.

The first locking part 120 is rotatably installed inside the bracket 110 by the first locking part shaft 125 on both sides of the second bracket plate 112 and the third bracket plate 113 . Accordingly, the first locking portion 120 is rotatable with respect to the bracket 110. [

The first locking portion 120 is formed in a plate shape and is arranged in the front-rear direction.

The first locking portion 120 is formed with a first through hole in which the first locking portion shaft 125 is inserted in the left-right direction.

The first locking portion shaft 125 has a head at its end and a fixing member at the opposite side of the head. A seating groove on which the fixing member is seated is formed on the outside of the second bracket plate 112. The seating groove is recessed from the outside to the inside so that a protrusion is formed on the surface of the second bracket plate 112 facing the first locking part 120. [ This protrusion can minimize friction between the second bracket plate 112 and the first locking part 120. [

A first step portion formed on the opposite side of the head portion of the first lock portion shaft 125 so as to have an outer diameter smaller than an adjacent portion, a second step portion having an outer diameter smaller than that of the first step portion, A third stepped portion having a smaller outer diameter is formed. The first locking portion 120 is fitted to the second step portion, and the second bracket plate 112 is fitted to the third step portion. Therefore, the first locking portion 120 is prevented from flowing in the lateral direction.

The head included in the headrest folding apparatus of this embodiment is provided with a head portion and a stepped portion like the first locking portion shaft 125. [ Further, a protrusion for reducing friction is formed on the member to be rotated or the facing surface when the surface faces the rotating member.

A first ratchet (121) protrudes outward from the outer circumferential surface of the first lock portion (120). The first ratchet 121 is formed so that its front-rear width becomes narrower toward the outside.

The first locking part 120 has a first bent part 122 continuous to the first ratchet 121. The first bent portion 122 is formed in an arc shape.

In addition, a first unlocking latch 126 protruding outwardly from the first ratchet 121 is formed on the outer circumferential surface of the first locking part 120.

The first locking part 120 is formed on the outer circumferential surface of the first locking part spring 124 in a groove shape. The first lock portion spring 124 returns the first lock portion 120 to the original position. In this embodiment, the first lock portion spring 124 returns the first lock portion 120 to the locked position. The first lock portion spring 124 is provided as a coil spring. The first lock portion spring 124 is fitted to the first step portion of the first lock portion shaft 125. Therefore, the first lock portion spring 124 is disposed on the right side of the first lock portion 120. The other end of the first lock portion spring 124 is engaged with the second lock portion spring lock portion 114 formed on the second bracket plate 112. The second locking portion spring latching portion 114 is formed by cutting a part of the second bracket plate 112 and bending it so as to protrude inward.

The first bending portion 122, the first ratchet 121, the first unlocking latching portion 126, and the spring latching portion 123 are sequentially disposed in the counterclockwise direction when viewed from the right side.

The second locking portion 130 is rotatable with respect to the bracket 110 and is locked or unlocked by the first locking portion 120. [

The second locking part 130 includes a first locking plate 131 and a second locking plate 132 and a third locking plate 133 which are bent forward at both sides of the first locking plate 131, . The first, second and third locking plates 131, 132 and 133 are integrally formed. Thus, the second locking portion 130 is formed, so that the strength of the second locking portion 130 is improved.

The second locking part 130 is disposed between the second bracket plate 112 and the third bracket plate 113 so that the first locking plate 131 and the first bracket plate 111 face each other. Therefore, the first bracket plate 111 is disposed in front of the apparatus, and the first lock plate 131 is disposed in the rear of the apparatus. As a result, the apparatus becomes compact, and each part of the apparatus is disposed between the bracket 110 and the second locking part 130 to protect the apparatus.

The second locking portion 130 is disposed above the first locking portion 120.

The second lock portion 130 is rotatably installed on the bracket 110 by the second lock portion shaft 160. That is, the central axis of the second lock portion shaft 160 serves as the center of rotation of the second lock portion 130.

The second lock plate 132 and the third lock plate 133 are formed with a second through hole in which the second lock portion shaft 160 is inserted in the left-right direction. Therefore, the second lock portion shaft 160 is installed in the second lock plate 132 and the third lock plate 133. [

Both sides of the second lock portion shaft 160 are installed on the second bracket plate 112 and the third bracket plate 113. That is, the second lock portion shaft 160 is disposed so as to pass through the third bracket plate 113, the third lock plate 133, the second lock plate 132, and the second bracket plate 112 in the left-right direction .

The second locking portion shaft 160 has a head formed at an end thereof and a fixing member formed at the opposite side of the head portion. The seating portion in which the head portion and the fixing member are seated is supported by the second bracket plate 112, Is formed outside the plate (113). The seating groove is recessed from the outside to the inside, and protrusions are formed on the surfaces of the second bracket plate 112 and the third bracket plate 113 facing the second locking unit 130. This protrusion can minimize the friction between the second bracket plate 112 and the third bracket plate 113 and the second locking part 130. [

A second step portion is formed on the opposite side of the head portion of the second lock portion shaft 160. The first step portion is smaller in outer diameter than the adjacent portion and the second step portion is smaller in outer diameter than the first step portion. The second lock plate 132 of the second lock portion 130 is fitted to the first step portion and the second bracket plate 112 is fitted to the second step portion. Therefore, the second locking portion 130 is prevented from flowing in the left-right direction.

A second ratchet 134 is formed on the outer circumferential surface of at least one of the second lock plate 132 and the third lock plate 133 of the second lock portion 130 to engage with the first ratchet 121 do. In this embodiment, the second ratchet 134 is formed only on the second lock plate 132. [ This can further simplify the structure of the device.

The second ratchet 134 is formed in a groove shape into which the first ratchet 121 is inserted.

When the first ratchet 121 and the second ratchet 134 are engaged, the unlocked state is maintained and the unlocked state is maintained when the first ratchet 121 and the second ratchet 134 are disengaged.

On the outer circumferential surface of the second lock plate 132, a second convexly bent portion 136 is formed in the second ratchet 134. The second bend section 136 is formed in an arc shape. The second bend section 136 contacts the first bend section 122 when folded.

A stopper protrusion 137 is formed on the outer circumferential surface of the second lock plate 132 so as to protrude outwardly from the second bend section 136. The stopper projection 137 is also formed on the third lock plate 133. The stopper protrusion 137 is inserted into the first cutout 111a and the second cutout 111b when the first ratchet 121 and the second ratchet 134 are engaged (in the unfolded state) 110). Thus, when the headrest h is moved from the folded state to the unfolded state, the headrest h is prevented from rotating further back when the unfolded position is reached, thereby preventing the apparatus from being damaged. When the headrest h is in the unfolded state, a force for supporting the head of the occupant is applied to the first and second ratchet teeth 121 and 134, the stopper projection 137 of the second lock plate 132, It can be stably supported by the stopper projection 137 of the plate 133 and durability is improved.

The second ratchet 134, the second bend section 136, and the stopper protrusion 137 are sequentially arranged in the clockwise direction.

The second lock portion shaft 160 is provided with a return spring 150 so that the module can be more effectively modularized,

The return spring 150 is provided as a coil spring.

The center portion (coil portion) of the return spring 150 is fitted in the second lock portion shaft 160 and is disposed between the second lock plate 132 and the third lock plate 133. One end of the return spring 150 is engaged with a return spring locking portion 135 protruding from a lower portion of the first lock plate 131 of the second lock portion 130 and the other end is engaged with the first lock portion shaft 125, Lt; / RTI &gt;

The return spring 150 rotates the second locking part 130 to the unfolded position with respect to the bracket 110 when the first locking part 120 and the second locking part 130 are unlocked, .

The horizontal rod 11 of the stay 10 is installed laterally to the rear of the first locking plate 131. That is, the stay 10 is provided on the back surface of the first lock plate 131. Thus, the stay 10 is directly attached to the second locking portion 130 and is connected to the second locking portion 130.

Thus, the horizontal rod 11 of the stay 10 is provided outside the second locking portion 130. In addition, the horizontal rod 11 is installed on the surface of the second locking part 130 arranged in the left-right direction, so that the contact area increases and the horizontal rod 11 can be stably installed.

The headrest folding device is installed in the center of the horizontal rod 11 of the stay 10 in a concentrated manner.

A headrest h is installed on the upper portion of the vertical rod 12 formed by bending the upper side of the horizontal rod 11 of the stay 10.

The pivot center of the second locking part 130 and the position where the stay 10 is connected to or installed with the second locking part 130 are spaced apart. That is, the center of rotation of the second lock portion 130 and the horizontal rod 11 of the stay 10 are not coaxially arranged. The center of rotation of the second locking portion 130 and the central axis of the horizontal rod 11 are staggered.

When the headrest h is in the unfolded state, the horizontal rod 11 of the stay 10 is disposed in front of or behind the second locking portion 130. [ The rotation center of the second locking part 130 and the position where the stay 10 is connected to the second locking part 130 are spaced in the forward and backward directions to minimize the volume of the device and further minimize the incision can do.

In this embodiment, since the headrest h is rotated forward of the seat s when folded, the horizontal rod 11 is disposed behind the second locking portion 130. [ In addition, a position where the stay 10 is connected to the second locking part 130 with respect to the pivot center of the second locking part 130 is disposed to be spaced rearward.

5 shows the cutting lengths c and c 'formed on the sheet s when the turning center of the second locking portion and the position where the stay is connected to the second locking portion are the same as (a) and (b) Is shown. As shown in FIG. 5, the rotation center of the second locking part 130 and the stay 10 are connected to the second locking part 130 when the second locking part rotates about the horizontal rod of the stay (45 mm) The incision length is short when the position is spaced (39.9 mm).

The bracket 110 is provided with an unlocking portion 140 for unlocking the first locking portion 120 and the second locking portion 130.

The unlocking portion 140 is rotatably installed on the back surface of the first bracket plate 111 through the unlocking portion shaft 143. [

As shown in FIG. 6, the unlocking portion 140 is formed in a plate shape, and is arranged in the left-right direction.

The unlocking portion shaft 143 is disposed in the front-rear direction.

The unlocking portion 140 is disposed in front of the first locking portion 120 and the first locking portion shaft 125.

The unlocking portion 140 is formed on the left side with the second unlocking latching portion 142 protruding to the left. The second unlocking latching portion 142 is engaged with the first unlocking latching portion 126 of the first locking portion 120. And the second unlocking latch portion 142 is disposed on the left side of the unlocking portion shaft 143. [

The second unlocking latching portion 142 and the first unlocking latching portion 126 are disposed to be exposed through the second cutout 111b.

Further, the unlocking portion 140 has a wire mounting portion 141 formed on the left side. The wire mounting portion 141 is disposed below the second unlocking engaging portion 142 and the unlocking portion shaft 143. [

The wire mounting portion 141 is formed by bending the left lower end of the unlocking portion 140 backward.

The wire mounting portion 141 is formed with an insertion hole into which the end of the wire 145 is inserted.

The unlocking part 140 is provided with the unlocking part spring 144 so as to return to the original position when the external force is removed. The unlocking spring 144 is provided with a coil spring. The central portion (coil portion) of the unlocking portion spring 144 is fitted to the unlocking portion shaft 143 and disposed at the rear of the unlocking portion 140. One end of the unlocking part spring 144 is caught by the unlocking part 140 and the other end is caught by the third bracket plate 113 of the bracket 110. The unlocking portion 140 is formed with a first fitting hole into which one end of the unlocking portion spring 144 is inserted so as to be disposed between the second unlocking engaging portion 142 and the wire mounting portion 141. The third bracket plate 113 is formed with a second fitting hole through which the other end of the unlocking part spring 144 is inserted in the left and right direction.

Further, the first bracket plate 111 is formed with a third cut-out portion 111c penetrating in the front-rear direction so that one end of the unlocking portion spring 144 and the bracket 110 do not interfere with each other.

Further, a protruding portion protruding frontward is formed on the front surface of the unlocking portion 140 around the third through-hole where the unlocking portion shaft 143 is inserted. This protrusion minimizes the friction between the unlocking portion 140 and the bracket 110. [

Further, a wire case mounting portion 116 disposed horizontally is formed at a lower portion of the bracket 110. The wire case mounting portion 116 is disposed downward from the wire mounting portion 141. The wire case mounting portion 116 is formed by bending the lower end of the first bracket plate 111 backward. The wire case mounting portion 116 is formed with a case insertion hole in which the end of the wire case surrounding the wire 145 is installed. As described above, the wire case mounting portion 116 is provided to prevent the wire 145 from being twisted, and the components disposed inside the bracket 110 can be protected.

Hereinafter, the operation of the present embodiment having the above-described configuration will be described.

<Unfolding state>

The first ratchet 121 is engaged with the second ratchet 134 so that the headrest h is held on the seat s as shown in Fig.

<Folding state>

When the wire 145 is pulled by the user or the folding of the sensor or sheet s, the unlocking portion 140 rotates counterclockwise when viewed from the front of the device. As the unlocking portion 140 rotates, the second unlocking latching portion 142 also rotates counterclockwise. The first unlocking engaging portion 126 of the first locking portion 120 is engaged with the rotating second unlocking engaging portion 142 so that the first locking portion 120 is rotated in the counterclockwise direction . As a result, the first ratchet 121 is disengaged from the second ratchet 134 and unlocked. The second lock portion 130 and the stay 10 and the headrest h are rotated about the second lock portion shaft 160 by the elastic force of the return spring 150 to be folded forward. As shown in FIG. 8, the upper surface of the second locking part 130 is caught by the back surface of the first bracket plate 111, and the folding is completed. When folding is completed, the second bend section 136 and the first bend section 122 are brought into contact with each other. The position where the second bend section 136 and the first bend section 122 are in contact is disposed forward of the rotation center of the first lock section 120. [

The process of unfolding the folded headrest h is as follows.

When the headrest h is lifted and pushed backward, the second lock portion 130, the stay 10 and the headrest h are rotated clockwise. Further, the first locking portion 120 is rotated in the clockwise direction by the elastic force of the first locking portion spring 124. As a result, the first ratchet 121 is engaged with the second ratchet 134, and the unfolded state of the headrest h is maintained. When the first ratchet 121 is engaged with the second ratchet 134, the stopper projection 137 of the second locking part 130 is caught by the bracket 110, The headrest h is stopped.

=================== < Second Embodiment > ===================

In describing the headrest folding apparatus according to the second embodiment of the present invention, the same or similar components as those of the headrest folding apparatus according to the first embodiment are denoted by the same reference numerals, and detailed description and illustration are omitted .

9-11, in the headrest folding apparatus according to the second embodiment, the unlocking portion 240 is rotated through the button member 270 so that the first and second locking portions 220, The lock mechanism 230 is unlocked.

The bracket 210 of this embodiment is fixed to the seat and the horizontal rod 11 of the stay 10 is provided on the second lock portion 230. [ A headrest is provided on the upper portion of the vertical rod 12 of the stay 10.

The button member 270 includes a button portion 271 including a button 271a and a transmitting portion 272 for transmitting a pressing force of the button 271a to the unlocking portion 240. [

The button portion 271 is provided on the seat.

The button portion 271 includes a button 271a and a bezel 271b in which the button 271a is slidably fitted in the left and right direction and a button spring 271c for returning the button 271a.

The button 271a is exposed through the side of the seat or the like. The button 271a and the bezel 271b are coupled through a hook formed on the button 271a and a long hole is formed in the bezel 271b so that the hook can be slid.

A button spring 271c is disposed between the button 271a and the bezel 271b.

The button 271a and the transmitting portion 272 are separately provided. Alternatively, the button 271a and the transmission unit 272 may be connected to each other.

The transmitting portion 272 includes a bent portion 273 formed to be bent and a linear rod portion 274 formed on one side of the bent portion 273. [ The transmitting portion 272 is disposed in the left-right direction.

The bent portion 273 includes an upper bent portion and a lower bent portion formed at a lower portion of the upper bent portion, and is formed to be bent in a generally parallelogram shape as a whole. Even if the height of the button 271a and the height of the unlocking portion 240 are different due to the bent portion 273, the force can be smoothly transmitted.

A flange 275 is formed on one side of the rod portion 274 and a rod locking projection 276 is formed on the other side. The rod locking projections 276 are formed on the upper and lower portions of the rod portion 274, respectively.

In the second bracket plate of the bracket 210, a rod through hole 212a through which the rod portion 274 passes is formed in the left-right direction. The rod through hole 212a is disposed at the lower portion of the first lock portion 220. [ In the front and / or rear of the rod through-hole 212a, a through-hole 212b is formed in the left-right direction so as to communicate with the rod through-hole 212a. The rod locking projection 276 is inserted into the bracket 210 through the through-hole 212b. After the assembly is completed, the rod locking projections 276 are vertically arranged by the weight of the transmission portion 272. Therefore, after the assembly is completed, the rod locking projections 276 are staggered from the stowage passage holes 212b so that the rod locking projections 276 do not escape through the stalk passage holes 212b.

The flange 275 is disposed on the outside of the bracket 210 and the rod locking projection 276 is disposed on the inside of the bracket 210. Further, a transfer unit return spring (not shown) may be further provided between the flange 275 and the second bracket plate to return the transfer unit 272 to the original position.

The unlocking portion 240 is rotatably installed on the bracket 210 as in the first embodiment. The pushing portion 241 pressed by the rod portion 274 contacts the rod portion 274 is formed at the left lower portion of the unlocking portion 240 by being bent backward. The pressing portion 241 is arranged in the front-rear direction.

The unlocking process of this embodiment is as follows.

When the user presses the button 271a, the transfer portion 272 is moved in the lateral direction by the button 271a. As a result, the rod portion 274 presses the pressing portion 241. Therefore, the unlocking portion 240 is rotated counterclockwise. The rotated unlocking portion 240 rotates the first locking portion 220 as in the first embodiment described above so that the first locking portion 220 and the second locking portion 230 are unlocked.

When the user depresses the pushing force of the button 271a, the button 271a and the transmitting portion 272 return to their home positions.

=================== < Third Embodiment > ===================

In describing the headrest folding apparatus according to the third embodiment of the present invention, the same or similar components as those of the headrest folding apparatus according to the first and second embodiments are denoted by the same reference numerals, .

12, the headrest folding apparatus according to the third embodiment includes a bracket 310 mounted on a headrest h and a seat 30 'provided on the lower portion of the vertical rod 12' of the stay 10 ' s and the first locking portion and the second locking portion 330 are unlocked via the wire 345. [

The horizontal rod 11 'of the stay 10' is installed behind the second lock portion shaft of the second lock portion 330. [

The first lock portion shaft 325 of the first lock portion of the present embodiment is disposed above the second lock portion shaft of the second lock portion 330. [ A wire case mounting portion 316, on which the wire case is mounted, is disposed above the first locking portion.

Further, the stay 10 'may be formed with a hole through which the wire 345 is drawn and a hole through which the wire 345 is guided smoothly to the sheet s.

=================== < Fourth Embodiment > ===================

In describing the headrest folding apparatus according to the fourth embodiment of the present invention, the same or similar components as those of the headrest folding apparatus according to the first, second, and third embodiments are denoted by the same reference numerals, It will be omitted.

13, the headrest folding apparatus according to the fourth embodiment is provided with brackets 410 on the headrest h and formed on both sides of the horizontal rod 11 'of the stay 10' The seat s is provided below the vertical rod 12 ', and the first locking portion and the second locking portion are unlocked via the button member 470.

The arrangement of each component in this embodiment is similar to the arrangement structure of each component in the above-described third embodiment.

The button member 470 may be installed to be exposed through the side of the headrest h.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims .

DESCRIPTION OF REFERENCE NUMERALS
10: stay
11: horizontal load 12: vertical load
110: bracket 111: first bracket plate
111a: first incision part 111b: second incision part
111c: third incision part 112: second bracket plate
113: third bracket plate 114: second locking portion spring catching portion
115: fastening part 116: wire case mounting part
120: first locking portion 121: first ratchet
122: first bent part 123: spring engaging part
124: first lock portion spring 125: first lock portion shaft
126: first unlocking latch portion
130: second locking portion 131: first locking plate
132: second locking plate 133: third locking plate
134: second ratchet 135: return spring latch portion
136: second bend 137: stopper projection
140: unlocking part 141: wire mounting part
142: second unlocking latch portion 143: unlocking portion shaft
144: unlocking spring 145: wire
150: return spring
160: Second lock portion shaft

Claims (6)

Brackets;
A first locking part connected to the bracket;
A second locking portion rotatable with respect to the bracket, the second locking portion being locked or unlocked to the first locking portion;
And a stay coupled to the second locking portion,
A headrest is connected to one of the bracket and the stay, and a seat is connected to the other,
Wherein the stay comprises a horizontal rod arranged in the left-right direction and a vertical rod arranged in the vertical direction on both sides of the horizontal rod,
Wherein the pivot center of the second locking portion and the position of the horizontal rod connected to the second locking portion are spaced apart from each other. The method according to claim 1,
Wherein the first locking portion is provided as a first ratchet, the first locking portion is rotatable with respect to the bracket,
And the second locking portion is provided as a second ratchet. 3. The method according to claim 1 or 2,
Wherein the stay is disposed forward or rearward of the second locking portion when the headrest is in the unfolded state and a position at which the rotation center of the second locking portion and the stay are connected to the second locking portion The headrest folding device comprising: 3. The method of claim 2,
Wherein the second lock portion is rotatably installed on the bracket by a second lock portion shaft,
Wherein the second locking portion includes a first locking plate, a second locking plate and a third locking plate bent at both sides of the first locking plate,
Wherein the first locking plate is provided with the horizontal rod,
The second lock plate and the third lock plate are provided with the second lock portion shaft,
The second ratchet is formed on at least one of the second locking plate and the third locking plate,
A return spring is provided on the second lock portion shaft,
Wherein the return spring rotates the second locking part about the bracket when the first locking part and the second locking part are unlocked. 5. The method of claim 4,
Wherein the bracket includes a first bracket plate, a second bracket plate and a third bracket plate bent at both sides of the first bracket plate,
Wherein the first locking plate and the first bracket plate are disposed to face each other. 5. The method of claim 4,
The second locking plate and the third locking plate are formed with stopper protrusions,
Wherein when the second locking portion is locked to the first locking portion, the stopper projection is engaged with the bracket.
KR1020160113836A 2016-09-05 2016-09-05 The folding device of the headrest KR101916916B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020160113836A KR101916916B1 (en) 2016-09-05 2016-09-05 The folding device of the headrest
PCT/KR2017/009356 WO2018044009A1 (en) 2016-09-05 2017-08-28 Folding device of headrest

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020160113836A KR101916916B1 (en) 2016-09-05 2016-09-05 The folding device of the headrest

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KR101916916B1 true KR101916916B1 (en) 2018-11-08

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KR102138297B1 (en) * 2019-01-21 2020-07-27 주식회사 우보테크 Vehicle headrest folded device

Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2012061964A (en) * 2010-09-16 2012-03-29 Nhk Spring Co Ltd Headrest for vehicle

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Publication number Priority date Publication date Assignee Title
KR100582529B1 (en) * 2005-04-25 2006-05-22 주식회사 우보테크 A device for stooping car headrests
JP2008272270A (en) * 2007-04-28 2008-11-13 Bizen Hatsujo Kk Headrest for vehicles
KR20100058017A (en) * 2008-11-24 2010-06-03 동광리어유한회사 A folding device of a headrest for the car seats
KR101585262B1 (en) * 2009-11-18 2016-01-13 주식회사다스 Folding apparatus of headrest for vehicle
KR101428664B1 (en) * 2013-12-10 2014-08-08 주식회사 우보테크 Headrest Folding Apparatus
KR20160067346A (en) * 2014-12-04 2016-06-14 현대자동차주식회사 Apparatus for folding headrest in vehicles

Patent Citations (1)

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Publication number Priority date Publication date Assignee Title
JP2012061964A (en) * 2010-09-16 2012-03-29 Nhk Spring Co Ltd Headrest for vehicle

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