KR20070107247A - Headrest for cars - Google Patents

Abstract

A headrest for cars is provided to reduce the number of parts of an equilibrium movement unit and improve assemblability. A headrest for cars comprises a stay rod(10) having a horizontal part(11) and two vertical parts(12) extending downwardly from opposite ends of the horizontal part, a base plate(20) installed to the middle of the stay rod, a pawl member(30) coupled to an upper end of the base plate and having a catch tooth on an upper end thereof, a first pivoting member(40) having a ratchet with a plurality of notches into which the catch tooth is selectively fitted, brackets fixed to the opposite side of the horizontal part of the stay rod at leading ends thereof, a pair of second pivoting members(60) coupled to rear ends of the respective brackets, a return spring(70) coupled to the horizontal part of the stay rod and locked on the first pivoting member at one end thereof and on the second pivoting member at the other end thereof, and a pair of tie members(80) having a hinge piece that is coupled to an upper part of a rear body of the first pivoting member at a front side thereof and to each upper end of the second pivoting members at a rear side thereof.

Description

Headrests for Cars {Headrest for cars}

1 is a front view showing the configuration of the headrest according to the embodiment of the present invention

Figure 2 is a perspective view separated by extracting the balancing device from the headrest

3 is a perspective view of an assembled state in which a part of the balancing device is omitted;

Figure 4a-e is a side view showing a part of the operating state of the balance balancing apparatus

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

10: stay rod

20: substrate member

21,21 ': Both sides 24: Braking

30: stop member

32: stop 34: control spring

40: first rotating member

41,41 ': Front and rear body 42,42': Shaft groove

43: ratchet part 441: hanger

442: hook

50,50 ': bracket

60: second rotating member

70: return spring

80: binding member

81: hinge piece 82: binding piece

90 support member

91: endothelial body

The present invention relates to a headrest for an automobile, and more particularly, to a headrest having a balance moving device for moving the support member supporting the occupant's head before and after in equilibrium.

In general, the headrest for a vehicle is installed on the upper back of the seat to support the occupant's head so that the height and the front and rear positions of the supporting member supporting the head can be adjusted as necessary, and before and after the supporting member. Position adjustment includes a tilting device for tilting forward and backward from the horizontal part of the stay rod and a balance shifting device for moving forward and backward in an equilibrium state.

However, the balance moving device has the advantage of supporting the head of the passenger stably because the balance member is maintained even when the support member is stopped at any position, as well as the use of the tilting device continuously increases the use On the other hand, since the structure is more complicated than the tilting device, there are problems such as a large number of parts and assembly labor and productivity.

The present invention has been invented in order to solve the above problems of the headrest of the conventional balancing device, the object is to provide a headrest for a vehicle having a balancing device that productivity is greatly improved compared to the structure.

The above object of the present invention is achieved by providing a headrest for an automobile in which the number of parts of the balance transfer device is reduced and the assembly is improved, and the headrest is raised and lowered in the vertical direction by using a stay rod when the height is normally adjusted. In order to adjust the front and rear positions, it is possible to move forward and adjust the equilibrium according to the degree of pulling when pulling forward, and at the same time, the conventional ratchet part is manufactured in one body on the first pivot member to reduce parts and assembly labor. It is characterized by comprising a moving device.

Hereinafter, described in detail with reference to the accompanying headrests for automobiles according to an embodiment of the present invention.

Figure 1 is a front view showing the configuration of the headrest according to the embodiment of the present invention, Figure 2 is a perspective view separated and extracted from the balance transfer device in Figure 1, Figure 3 is an assembled state omitting a part of the balance balance device Figure 4a-e is a side view showing a part of the operating state of the balance balancing apparatus.

The headrest for a vehicle according to the embodiment of the present invention includes a stay rod 10 made of a steel rod or a steel pipe and comprising a horizontal portion 11 and two vertical portions 12 extending downward perpendicularly at both ends of the horizontal portion, The substrate member 20 which is installed upright by fixing and installing the lower ends of both side plates 21 and 21 'in the middle of the horizontal portion of the stay rod, and the shaft hole 31 formed in the middle portion of both side plates of the substrate member. Interlocking between the two side plates in accordance with the binding holes 22 formed in each upper end is coupled to the shaft by the pin shaft (30a), the stop surface 32 is formed on the upper end and one end 341 is a hook hole formed in the lower end And the other end 342 and the stop member 30 is installed so that the rotation direction is controlled by the repulsive force of the control spring 34 to be hooked to the engaging hole 23 formed in the one side plate 21, Front and rear body in which the substrate member and the stop member are accommodated in the space of each lower part ( The semicircular shaft grooves 42 are formed in the form of 41) and 41 ', and are joined to the lower portions of both sides of the four main surfaces joined to each other to form a shaft hole through which the horizontal portion of the stay rod passes. And 42 'are formed on the bottom surface between the hook piece 441 and the rear wall of the body 41', which are respectively extended downwardly at the front end of the ratchet portion 43 which is integrally attached to the inner upper side of the body 41 '. The first pivot member 40 is provided with a plurality of hook teeth 442 for selectively stopping the stop, and the front end is fixed and installed on both sides of the horizontal portion of the stay rod so as to be isolated from both outer surfaces of the first pivot member. The brackets 50 and 50 'installed horizontally toward each other, and the hinge holes 61' formed at the rear ends of the brackets, among the hinge holes 61 and 61 'formed at the upper and lower ends, respectively. A pair of second pivots which are installed in axial engagement with each of the hinge pin shafts 60b in line with each other. The winding part is installed to be coupled to the horizontal portion of the stay rod so as to be interposed between the member 60 and one side outer surface of the first pivot member and the inner surface of the bracket 50, and one end 71 is one side of the first pivot member. The return spring 70, the hinge piece 81, and the binding piece 82, which hang on the outer surface and the other end 72 act on the bracket 50, acting as a force for the repulsive force to rotate the first pivot member backward. The hinge shaft holes 83 of the hinge shaft holes 83 and 83 'which are formed to be orthogonal to each other and formed in the front and rear portions of the hinge piece are formed in the upper shaft hole formed in the body 41' of the first pivot member. 44 are axially coupled to both ends of the long shaft 80a for axially coupling through the hinge shaft, and the hinge shaft hole 83 'is axially coupled to each of the hinge holes 61 and the respective hinge pin shafts 60a of the second pivot members. A pair of binding members 80 to be installed and the endothelial body 91 to which the binding pieces are bound on both inner surfaces thereof become one body therein. It is configured to include a supporting member 90 of the head chakdoen.

The horizontal portion 11 of the stay rod 10 is accommodated in the interior of the endothelial body 91 made of synthetic resin and both vertical portions 12 are formed on both sides of the bottom of the endothelial body parallel to each other and the support member 90 It is exposed through the long hole (not shown) formed on the bottom of the bottom, and the headrest is installed when the two vertical parts are coupled to the upper end of the seat back of the vehicle.

Therefore, the height of the headrest can be adjusted vertically by using both vertical portions 12, and the adjusted position is the interior of the backrest to selectively hang the notches 13 formed at regular intervals on one vertical portion. It is fixed by a stopper (not shown) installed in the.

The stop member 30 made of steel is the intermediate part is installed between the two side plates (21, 21 ') of the substrate member 20 by the pin shaft (30a) is installed to be rotated forward and reverse, stop of the upper surface When the tooth 32 is engaged with the hook 442, the ratchet portion 43 stops moving backwards, and the repulsive force of the control spring 34 rotates the stop member clockwise in a clockwise direction. It acts as a giving force so that the engagement between the stop and hook is not released.

On the other hand, in the upper side of the front end surface of the one side plate 21 by placing the braking piece 24 inward orthogonal to limit the degree of rotation of the stop member 30 in the forward direction, the stop tooth 32 is ratchet portion 43 Do not leave the hanger (441).

The bodies 41 and 41 'of the first pivot member 40 are made of synthetic resin, and the ratchet portion 43 is integrally formed on the inner upper side of the body 41'.

In addition, the shaft grooves 42 and 42 ′ of the first pivot member 40 coupled to the horizontal portion 11 each have lower ends of the pair of second pivot members 60 to the respective brackets 50 and 50. And the hinge pin shaft 60b coupled to each other on the same line as the hinge pin shaft 60b, which is formed on the front side of each hinge piece 81 of the upper shaft hole 44 and the binding members 80 of the first pivot member. The long shaft 80a for shaft coupling the hinge shaft hole 83 is on the same line as the hinge pin shaft 60a for coupling the upper end of each second pivot member to the hinge shaft hole 83 'formed at the rear side of each hinge piece. By the position, the first and second pivot members are rotated before and after the top and side by side on an arc line with the horizontal portion and the hinge pin shaft (60b) as the axis is installed so as not to contact each other. A pair of fastening members in which the front and rear portions of each hinge piece are axially coupled to the long shaft and the hinge pin shaft 60a is moved forward and backward in an equilibrium state. It is moved.

In this case, each binding piece 82 of the binding members 80 is mounted on both inner surfaces of the endothelial body 91, and the endothelial body is supported by a cushion that is injected and foamed and filled in the support member 90. Since the supporting member is bound together as one body with the member, the supporting member moves forward and backward in equilibrium with the binding member.

The headrest according to the embodiment of the present invention configured as described above is installed and used at the upper end of the seat back, and when the height of the support member 90 is adjusted, it is only necessary to lift up and down vertically using both vertical portions 12, and The position is stopped by a stopper (not shown) mounted inside the backrest to selectively hang the notches 13 formed at regular intervals on one vertical portion.

In addition, adjusting the position of the support member 90 before and after is made within the range of the number of hooks 442 of the ratchet part 43 to which the stop teeth 32 of the stop member 30 are selectively walked. As shown in FIG. 4A, the support member is positioned at the rearmost end when the stopper is engaged with the hook of the tip.

In this state, when the support member 90 is pulled forward, the first and second pivot members 40 and 60, which are axially coupled to each of the binding members 80, rotate forward. The ratchet portion 43 formed integrally with the rotating member is also moved forward at the same time.

In this case, the hook teeth 442 are sequentially pushed forward by pushing the stop teeth 32, wherein the stop member 30 is rotated counterclockwise in proportion to the degree of pushing each time the hook teeth push over the stop teeth. However, at the moment when the hook does not push the stop forward, immediately after the fall, it is immediately rotated clockwise by the repulsive force of the control spring 34, and the next hook of the crossed hook is walked, and this operation moves the support member 90 forward. It will be done repeatedly while pulling out.

Thereafter, when the support member 90 reaches the required position, when the support member 90 is released without further pulling, the repulsive force of the return spring 70 increases in proportion to the degree in which the first and second pivot members 40 and 60 rotate forward. Acting to reversely rotate the first and second pivot members to the rear, in which case the stop teeth 32 are hooked to the hanger 442 of the corresponding position and the repulsive force of the control spring 34 is from the stop teeth. Since the ratchet portion 43 does not move backward because it does not move away, as shown in FIG. 4B or 4C, reverse rotation of the first and second pivot members and the binding member 80 is stopped, thereby supporting the support member. Will remain stationary in the adjusted position.

Thus, by moving the support member 90 in the same way as described above to be able to adjust its position in a number of steps within the number of hooks 442, the position of the support member 90 moved forward In order to completely move the rearward, the support member may be pulled completely forward in which position the stopper 32 is hooked to the hanger 442.

In this case, as shown in FIG. 4D, the inner rear surface of the body 41 ′, which is the rear end side of the ratchet portion 43, pushes the upper end portion of the rear end surface of the stop member 30 forward, so that the stop member is turned counterclockwise. As the stop value is reversed and the stop value is released from the hook value 442 of the rear end, the direction in which the repulsive force of the control spring 34 is applied is switched to the direction for rotating the stop member counterclockwise, and at this time, the front end surface of the stop member. Is supported by the braking piece 24 so that the ratchet portion is kept in an isolated state so as not to be caught by the stopping hook, and the ratchet part is released by the stopping member.

In this state, when the supporting member 90 is pulled out, the repulsive force of the return spring 70 acts to rotate the first and second pivot members 40 and 60 clockwise, so that the supporting member is rearward in an equilibrium state. In the process, when the front end side latch 442 of the ratchet portion 43 moving backward with the first pivot member approaches the stop 32, the stop as shown in Figure 4e. The upper end of the front face 32 is hooked on the hook piece 441 and pushed backward.

In this case, since the stop member 30 is rotated in the clockwise direction, the stop member 32 is raised, and as shown in FIG. It is stopped in the positioned state, thereby allowing the support member to be moved forward again as needed in the reversed position.

As described above, the headrest for a vehicle according to the embodiment of the present invention is usually capable of freely adjusting the height and the front and rear positions of the support member according to the convenience of the occupant, and in particular, the ratchet part is integral with the body of the first pivot member. As it is formed, there is a characteristic of reducing the overall parts and assembly labor, etc. As a result, the assembly work is also very easy, and the productivity is greatly improved, and the production cost is also greatly reduced.

Claims (4)

A stay rod comprising a horizontal portion and both vertical portions extending downwardly orthogonally from both ends of the horizontal portion; A substrate member installed at a lower end in the middle of a horizontal portion of the stay rod; An intermediate portion is axially coupled to an upper end of the substrate member, a stop provided at an upper end thereof, and a stop member elastically installed by a control spring that is hung at one end of the lower end; It is formed as a front and rear body, and the semicircular shaft grooves are formed in the lower portion of both sides of the four main surfaces joined to each other to form a shaft hole through which the horizontal portion of the stay rod penetrates, respectively, and extend downward in the tip of the rear body. A first pivot member having a ratchet portion having a plurality of hook teeth formed on the rear bottom surface of the hook piece to be selectively hooked; Brackets fixed to and mounted on both sides of the horizontal portion of the stay rod to face rear to be isolated from both outer surfaces of the first pivot member; A pair of second pivotal members, each lower end of which is axially coupled to the rear end of each bracket; It is installed by coupling the winding part to the horizontal part of the stay rod so as to be interposed between the outer surface of one side of the first rotating member and the inner surface of the one side bracket, one end of which is connected to the first rotating member and the other end of which is returned to one side of the bracket. ; And The front side is axially coupled to the upper portion of the rear body of the first rotating member and the rear side comprises a pair of binding members having a hinge piece is installed in axial coupling with each upper end of the second rotating member. Car headrest. The method of claim 1, The front end of the substrate member, the headrest for automobiles, characterized in that the braking piece for limiting the degree to which the stop member is rotated forward. The method according to claim 1 or 2, The ratchet part is an automobile headrest, characterized in that formed integrally with the inner upper side of the rear body. The method according to claim 1 or 2, The pair of fastening members extends perpendicularly to the hinge piece and includes a binding piece installed on both sides of the inner surface of the endothelial body which is mounted to the body inside the support member.

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