JPH0517960Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a headrest device attached to a seat back of a seat.

Conventional technology For example, it is conventional to provide a headrest device on the seatback of a seat placed in a car or the interior of a general house, and use the headrest body to support the head of the seated person to ensure the comfort and safety of the seated person. It is more well known.

In this type of headrest device, a stay supporting the headrest main body is fixedly supported by a movable member that is supported to be able to rise and fall freely with respect to the seat bag, and the movable member is raised and lowered by operating an operating member, thereby A configuration in which the height of the headrest body can be adjusted steplessly has already been proposed (see Utility Model Application No. 60-44650).

According to such a headrest device, there is an advantage that the height position of the headrest body can be easily adjusted according to the physique and preference of the seated person while the seated person is sitting on the seat.

By the way, when a person is sitting on the seat,
Although the headrest device is very useful, the headrest itself may become a hindrance when the seat is empty. That is, if the headrest body can be removed from the seat back when the seat is empty, the effective space inside the vehicle can be expanded and visibility can be improved.
In the case of a tiltable seat bag, by removing the headrest main body from the seat bag, a continuous flat surface can be formed by the folded seat bag and the seat cushions of other seats.

From this point of view, it is desirable to configure the headrest main body so that it can be attached to and detached from the seat bag.

However, as described above, when the stay that supports the headrest body is fixed to a movable member that is supported on the seat bag so that it can be raised and lowered, and the headrest body is configured to be raised and lowered together with the movable member, the movable member is not fixed to the stay. Therefore, this movable member becomes a hindrance, making it impossible to pull out the stay from the seat bag, making it impossible to adopt a configuration in which the headrest main body is detachable from the seat bag.

Purpose An object of the present invention is to provide a headrest device configured to allow stepless adjustment of the height position of a headrest body and to allow the headrest body to be attached to and removed from a seat bag.

Configuration In order to achieve the above object, the present invention includes a headrest main body that supports the head of a seated person, a stay that supports the main body and extends inside the seat back, and a stay that supports the stay and that can be raised and lowered relative to the seat back. The freely supported movable member engages with the lock groove formed in the stay to integrally connect the stay and the movable member, or the stay and the movable member are disengaged from the lock groove and removed from the seat back. A lock plate is rotatably supported on the movable member to permit extraction of the stay, an operating member is supported by the seat back, and the operation of the operating member is transmitted to the movable member. A headrest device for a seat is proposed which includes a transmission means for raising and lowering the headrest body together with the headrest body.

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In Figure 1, 1 is the seat back of the seat;
2 is a headrest device attached to the seat bag 1, and the seat bag 1 serves to support the back of a seated person (not shown). The seat bag 1 has a seat bag frame 3 located inside the seat bag and a seat bag main body 4 provided around the frame and equipped with a pad.In order to clarify the internal structure of the seat bag 1 in FIG. Only the outline of the main body 4 is shown by a chain line. The same applies to FIGS. 3 and 4.

The headrest device 2 has a headrest main body 5 that is located above the seat back 1 and supports the head of the seated person.The main body 5 is provided with a soft pad such as a foam material on the inside of its skin, so that the seated person can comfortably rest the headrest. The head can be placed on the main body 5. Further, the headrest main body 5 is fixedly supported by a stay 6 formed in an approximately inverted U shape, and both legs 7 and 8 of the stay 6 are supported.
extends into the interior of the seat bag 2. At that time, each leg 7, 8 is connected to a sleeve 41 and a guide member 37, which will be explained in detail later, and the other sleeve 41a.
and is inserted into the hollow part inside the guide member 37a.

Instead of directly supporting the headrest main body 5 by the stay 6, for example, an operating member that can rotate in the front-rear direction of the seat may be pivotally supported on the stay 6, and the headrest main body 5 may be fixed to this operating member. In short, the headrest main body 5 may be supported directly or indirectly on the stay 6.

FIG. 2 is an exploded perspective view of the seat bag 1 with the main body removed. As can be seen from this figure, inside the seat bag 1 there is a movable body that is supported so as to be able to rise and fall freely relative to the seat bag 1 in a manner that will be described later. A member 9 is provided. The legs 7 and 8 of the stay 6 that protrude into the interior of the seat bag 1 are fitted into the pair of cylindrical members 10 and 11 of the movable member 9, respectively, and the lower ends of the legs 7 and 8 are connected to the respective cylindrical members 10 and 11. ，
It is supported by the bottom plate of 11. At this time, the leg portion 7 of the stay 6 is integrally connected to the movable member 9 by a lock plate 26, which will be described later. In this way, the movable member 9 functions to support the stay 6 and the headrest main body 5.

On the other hand, a handle 13, which is an example of an operating member, is rotatably supported on the frame 3 of the seat bag 1, and the handle 13 protrudes from the side of the seat bag 1 to the outside of the seat bag. It is configured so that it can be rotated.

When the handle 13 is rotated, the operation is transmitted to the above-mentioned movable member 9, and the handle 13 and the movable member 9 act as a transmission means so that the member 9 moves up and down and the headrest main body 5 supported by it moves up and down. Drive is connected via. The transmission means shown as an example in the figure is constructed as follows.

1 and 2, a mounting bracket 1 is attached to the part of the frame 3 where the handle 13 is provided.
A pinion 14 is rotatably housed and supported in a casing 12a fixed to the bracket 12, and is connected to a handle 13. When the handle 13 is operated, the pinion 14 is rotationally driven.

A cable case 15 having a U-shaped cross section is fixed to the mounting bracket 12, and the case 15 extends upward, and its upper end is fixed to a mounting plate 16 fixed to the frame 3. cable case 1
A geared cable 17 is inserted into the cable 5 and is slidable in the longitudinal direction thereof. As is well known, the geared cable 17 is a rack-shaped member made of a flexible material, and the teeth of the cable 17 exposed from the opening 18 of the case 15 are exposed from the opening (not shown) of the casing 12a. The aforementioned pinion 14
It meshes with the.

A plate 19 is attached to the upper end of the geared cable 17.
is fixed, and the plate is fixed to the aforementioned movable member 9 by screws.

A guide plate 21 is fixed to a support rod 20 that is integrally fixed to the seat back frame 3, and a guide pin 24, which is screwed onto the movable member 9, is inserted into guide slots 22, 23 formed in the guide plate 21 and extending vertically. 25 are slidably fitted.

The structure of the transmission means is as described above, and its operation is as follows.

When attempting to adjust the height position of the headrest main body 5, the seated person rotates the handle 13.
As a result, the pinion 14 rotates, and the geared cable 17 meshed with the pinion 14 slides in the longitudinal direction while being guided by the case 15. As a result, the plate 19 fixed to the cable 17 and the movable member 9 move up and down. Along with this lifting and lowering operation, the stay 6 and the headrest main body 5 supported by the movable member 9 move up and down, and the main body 5 can be brought to a desired height position. In this way, the height position of the headrest main body 5 is adjusted not stepwise but steplessly, so that the headrest main body 5 can be brought to the most suitable position for the seated person. Moreover, the seated person can move the headrest main body 5 up and down by operating the handle 13 while sitting on the seat, making this operation extremely easy. There is no need for cumbersome operations such as grasping the headrest body and lifting it or pushing it downward.

Also, when the movable member 9 is raised and lowered, the guide pins 24 and 2
5 slides in the guide slots 22, 23, the movable member 9 is not twisted or rattled and operates smoothly.

By the way, as explained above, the headrest device is very useful when a person is sitting on the seat, but when the seat is empty, the headrest body 5 may become a hindrance. From this point of view, in the headrest device 2 according to the present invention, the headrest main body 5 and the stay 3 are connected by operating the lock plate 26 described above.
It is configured such that it can be separated from the seat bag 1. The configuration related to this will be clarified below.

In FIGS. 1 to 4, the above-mentioned lock plate 26 is attached to one end of the movable member 9.
It is rotatably supported via 7. The lock plate 26 is operated by a torsion coil spring 27a.
Given the counterclockwise rotational behavior in FIGS. 2 and 3, the lock pawl 28 at the lower end of the lock plate 26 projects into a notch 29 formed in the tubular member 10. On the other hand, a locking groove 30 is formed in the lower part of the leg part 7 of the stay 6 inserted into the cylindrical member 10, as shown in FIG. 2, and the locking claw 28 is engaged with this groove 30 by the action of the spring. are doing. As a result, the stay 6 and the movable member 9 are integrally connected,
As described above, the headrest main body 5 can be moved up and down by raising and lowering the movable member 9.
In the illustrated example, a lock plate or the like is not provided on one side of the cylindrical member 11, and the stay 3
The legs 8 are not locked against the movable member 10 and are in a slidable state.

A pair of support brackets 31, 31a are fixed to the upper part of the seat back frame 3, and a tongue portion 32a of the control plate 32 is attached to one of the brackets 31.
is rotatably supported via a pin 33.
The lower end 48 of this control plate 32 can come into contact with the upper end pressurizing part 34 of the lock plate 26, but normally the control plate The lower end 48 of the lock plate 32 is spaced apart from the pressure portion 34 of the lock plate 26, as shown in FIG.

On the other hand, hollow guide members 37 shown in FIGS. 5 and 6 are fitted into holes 35 and 35a (FIG. 2) formed in the upper and lower plate portions of the support bracket 31 described above. A pawl 38 is formed at the lower part of this member 37, which engages with the lower surface of the lower plate of the bracket 31, and a protrusion 39 formed at the upper part of the guide member 37 connects to the groove 40 of the hole 35 (see FIG. 2). ) to prevent rotation of the guide member 37 relative to the bracket 31. Further, a hollow sleeve 41 is disposed on the upper part of the guide member 37, and as shown in FIG. A pair of elongated holes 4 extending in the circumferential direction and formed in the member 37
3, and the guide member 37 and sleeve 41 are integrally assembled. The sleeve 41 is rotatable about its central axis with respect to the guide member 37, but since the claw 42 is slidably fitted into the elongated hole 43, the angle regulated by the elongated hole 43 is Rotate range.

A protrusion 44 attached to the sleeve 41 rests on the upper surface of the upper plate of the bracket 31, thereby preventing the integrally assembled sleeve 41 and guide member 37 from falling off from the bracket 31. . Further, the protrusion 44 can come into contact with the upper end 46 of the control plate 32 and pressurize it, but normally, the protrusion 44 is attached to the anchor part 141 of the sleeve 41 and the protrusion 39 of the guide member 37. 139 and the tension spring 4 locked to
5 imparts a rotational habit to the sleeve 41, which keeps the projection 44 free of pressure against the upper end 46 of the control plate. Further, a knob 47 is attached to the upper end of the sleeve 41.
This knob 47 is positioned so as to protrude above the seat bag body 4.

As shown in FIG. 1, the other support bracket 31a also has a hollow guide member 3 formed in substantially the same manner as the hollow guide member 37 and sleeve 41 described above.
7a and sleeve 41a are attached in the same way as guide member 37 and sleeve 41. However, the sleeve 41a may be non-rotatable with respect to the guide member 37a, so that the claw 42a of the sleeve 41a
The hole 43a of the guide member 37 into which (FIG. 1) fits does not have to be a long hole. Further, the above-mentioned tension spring 45 and knob 47 are not provided on the sleeve 41a and the guide member 37a.

As described above, the hollow parts inside the sleeve 41 and the guide member 37 and the other sleeve 41a
The legs 7 and 8 of the stay 3 are slidably inserted into the hollow plate portion inside the guide member 37a, and are assembled so as to be guided within these hollow guide portions.

When removing the headrest main body 5 from the seat bag 1, the knob 47 of the sleeve 41 is pressed against the action of the spring 45, and the sleeve 41 is rotated in the direction indicated by arrow A in FIG. At this time, the claws 42 of the sleeve 41 are guided by the long holes 43 of the guide member 37, and the sleeve 41 can freely rotate through a predetermined angle.

Rotation of sleeve 41 causes its protrusion 44 to press against the upper end 46 of control plate 32, causing plate 32 to rotate about its pin 33 in the direction indicated by arrow B in FIGS. 2 and 3. As a result, the lower end 48 of the plate 32 presses the pressing portion 34 of the lock plate 26, causing the plate 26 to rotate around the pin 27 in the direction of arrow C. Therefore, the lock pawl 28 of the lock plate 26 separates from the lock groove 30 formed in the leg portion 7 of the stay 6, and
The stay 6 is unlocked. That is, stay 6
becomes free. Then, by lifting the headrest main body 5 upward, it can be removed from the seat bag 1 together with the stay 6. In this manner, when the lock plate 26 is disengaged from the lock groove 30, the stay 6 is allowed to be removed from the seat bag 1.

When the knob 47 is released, the sleeve 41 returns to its initial position by the action of the spring 45, and the control plate 32 and lock plate 26 are also returned to their initial positions by the action of the aforementioned torsion coil springs 33a and 27a.
The lock claw 28 of the lock plate 26 is connected to the cylindrical portion 10.
It plunges into the notch 29 of.

To install the headrest body 5, use the stay 3
Insert both legs 7, 8 of the seat bag 1 from above, and attach these legs 7, 8 to the sleeves 41, 41.
a, guide members 37, 37a and cylindrical members 10, 1
Just insert it into 1. By this operation, the locking groove 30 of the leg 7 engages with the spring-biased locking pawl 28 of the locking plate 26, and the stay 6 is locked together with the headrest main body 5.

As described above, the lock pawl 28 engages with the lock groove 30 formed in the stay 6 to integrally connect the stay 6 and the movable member 9, or the lock pawl 28 is disengaged from the lock groove 30. Seat back 1 to stay 6
lock plate 2 to allow removal of the
By rotatably supporting the headrest main body 5 on the movable member 9, the headrest main body 5 can be easily and reliably removed from the seat bag 1.

The present invention can be applied to headrest devices attached to seats for various purposes as well as seats used in automobiles, houses, etc.

Effects According to the present invention, the height position of the headrest main body can be adjusted steplessly while the seated person is sitting on the seat, and furthermore, the headrest main body can be removed from the seat bag together with the stay.

[Brief explanation of drawings]

Fig. 1 is a front view of the headrest device and the seat bag, with the seat bag main body shown in chain lines, Fig. 2 is an exploded perspective view showing the structure inside the seat bag main body with the main body omitted, and Fig. 3 is a partially enlarged view of FIG. 1, FIG. 4 is a side view of FIG. 1 as seen from the left, with some elements omitted;
Figure 5 shows one sleeve and one guide member
FIG. 6 is a side view showing the state seen from the left side of the figure, with the bracket indicated by chain lines, and FIG. 6 is a perspective view showing the sleeve and guide member removed. 1... Seat bag, 2... Headrest device, 5... Headrest body, 6... Stay, 9
...Movable member, 26...Lock plate, 30...
...lock groove.

Claims (1)

[Scope of utility model registration request] A headrest main body that supports the head of a seated person; a stay that supports the main body and extends inside the seat bag; a movable member that supports the stay and is supported so as to be movable up and down with respect to the seat back; Engage with a formed lock groove to integrally connect the stay and the movable member, or
a lock plate rotatably supported on the movable member so as to be disengaged from the lock groove and allow the stay to be removed from the seat bag;
A seat headrest device comprising an operating member supported by a seat bag, and a transmission means for transmitting the operation of the operating member to the movable member and moving the movable member up and down together with the headrest main body.