JPH03198811A - Forward and rearward inclinable housing bay for headrest - Google Patents

Abstract

PURPOSE:To make the title device work even with a small powered motor, prevent the generation of jarring noise and unnecessitate oiling by a method wherein, by using a link lever, a shaft stop device of which structure is made in a manner that its lower right and left shafts and made to be positioned forward of the upper both side shafts. CONSTITUTION:By revolving a motor, a rack 36 is moved upward by the action of a gear 37, together with a vertical moving plate 32 being moved upward, and also a guide member 40 contained in a support cylinder 7 is moved upward by the action of said plate 32 via vertically moving shaft 39. The guide member 40 makes a revolving member 44 move upward via link member 42. When the member 44 reaches the height at which its forward rotation starts, guide shafts 48, 49 abut against the uppermost end of the inner and outer vertically transfer grooves simultaneously and the upward movement stops. Under this state, the guide member 40 makes the member 44 move upward further through the action of the link lever 42. However, when the link lever 42 is attached to the member 33, because the position of the two upper shafts 45 has been set at a position to the rearward of the underside two shafts 43, the member 44 starts advancing rotation with guide shafts 48, 49, as its pivotal center, while the member 66 being of a small caliber of the stay 4 of the headrest 1 turn pivotally forward through the window 28 of a member 22 for fixing, abutting against front bent part 17, stopping its turning, and making the headrest 1 unusable state because of its frontward inclining.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a front and back folding storage device for a headrest, and is a device for folding back and forth headrests attached to front seats and rear seats.

(Prior Art) Conventionally, Japanese Unexamined Patent Application Publication No. 125935/1982 discloses a headrest having a vertical stay, a backrest seat, and a support provided at an upper position of the backrest seat into which the stay is inserted from above. a cylinder, a guide member (shoe) that is fitted into the support cylinder and moves up and down within the support cylinder and to which the lower end of the stay is fixed; a motor that directly or indirectly moves the guide member up and down; and a cam formed on the upper part of the support cylinder,
A headrest front and back folding storage device is described in which when the guide member (shoe) moves 1, the headrest is guided by a cam and automatically falls forward.
Ru.

(Problems to be Solved by the Invention) In the headrest forward tilting device number of the known example, the guide member (
When the shoe (shoe) rotates for the first time, the headrest is guided by the cam and tilts forward, but this requires a strong force equivalent to the action between the cam body and the cam surface, and a small horsepower motor is required to move the headrest forward. There were problems such as not operating smoothly and causing an unpleasant squeaking sound on the sliding surface, which required lubrication.

(Objective of the Invention) Therefore, the present invention provides a light and smooth operation even with a small horsepower motor.
This is a headrest forward tilting device that does not generate any unpleasant squeaking noises, does not require lubrication, and is therefore free from oil stains.

(Means for Solving the Problems) Therefore, the present invention provides a headrest 1 having a vertical stay 4.
, a back seat 2, a support tube 7 into which the stay 4 provided at the upper position of the back seat 2 is inserted from above; With the guide member ω.

a motor that directly or indirectly moves the guide member sum up and down, and a motor provided in the support tube 7 whose lower end is connected to the guide member 40
A link rod 42 is fixed to the left and right shafts C, and a lower end of the link rod 42 provided in the support tube 7 is fixed to the upper end of the link rod 42 by a left and right shaft, and the lower end of the stay 4 is inserted. The rotating member M, the guide shaft member and the guide shaft feather that protrude from the #rotating member shrine on both the left and right sides, the vertical movement groove l formed on the side of the support tube 7 in which the guide shaft feather engages, and the It consists of a vertical movement groove 15 with which the guide shaft O engages, and a window portion formed on the front side of the upper part of the support tube 7 for tilting the stay 4 forward, and the left-right axis of the lower part and the left-right axis of the upper part The positional relationship between the left and right shafts is such that the left and right shafts in the upper position are located rearward of the left and right shafts C in the lower position, and when the guide member sum is moved upward, the stay 4 automatically tilts forward. It has a front and rear foldable storage device.

(Embodiment) An embodiment of the present invention will be described with reference to the drawings. In FIG. The cushioning material 1 is formed by attaching a cushioning material around an internal skeletal frame and surrounding the outer periphery of the cushioning material with a skin. The upper end of the mouth-shaped stay 4.4 is fixed to the frame, and the lower end thereof is fixed to the headrest 1.
It protrudes from the lower surface 3 of.

Reference numeral 5 designates a frame provided within the backrest seat 2, and a mounting plate 6 in the left and right direction is fixed to the upper part of the frame 5 (a second
), the stays 4 and 4 are located on the left and right sides of the front of the mounting plate 6.
Vertical support tubes 7, 7 are provided to support the.

Each support cylinder 7 is formed into two halves in the front and back into a front half cylinder part 8 and a rear half cylinder part 9, and these parts are combined from the front and back sides to form a vertically long rectangular cylinder shape.

The outer plate lO of the front half-tube portion 8 and the outer plate of the rear half-tube portion 9! 1, a notch is formed so that a vertically long outer longitudinally movable groove is formed when the front half cylinder part 8 and the rear half cylinder #1 part 9 are brought together from the front and rear sides.

The inner plate opening of the front half-cylindrical portion 8 and the inner plate 14 of the rear half-cylindrical portion 9 are provided with vertically long holes when the front half-cylindrical portion 8 and the rear half-cylindrical portion 9 are aligned from the front and rear sides. A notch is formed so that an inner vertical movement groove 6 is formed. The inner vertical movement groove 6 is formed into a mold shape by bending its upper end toward the front side.

The outer vertical moving groove 15 and the inner vertical moving groove 15 are formed at the same height position at the upper end, but the lower end position is such that the inner vertical moving groove 6 is formed lower than the outer vertical moving groove (the third figure).

The upper end of the front plate 16 of the front half cylinder part 8 is bent forward to form a front bent part 17 (FIG. 2).

The upper part of the rear plate 18 of the rear half cylinder part 9 is formed with a bulge part 4 that projects rearward. The fourth bulge is.

When viewed from the side, the front and rear half-cylindrical portions 8. are formed in an arc shape centered on the upper end portion of the inner vertical movement groove 6, and the upper ends of the bulging portions 4 are formed horizontally for positioning (FIG. 5). 9
Positioning protrusions projecting in the front and back direction are formed on each of the front and rear surfaces.

The positioning projections are engaged with the engagement holes 21 of the mounting plate 6 and the engagement holes B of the mounting bodies η and η, which will be described later (FIG. 2).

Each support cylinder 7 is attached to the mounting plate 6 by a mounting body η, 22 having a V-shaped cross section. The outer plate 24 of the mounting bodies η, n is formed with a vertically long guide hole δ that matches and communicates with the inner vertical movement groove 15 of the support @7 (Fig. 2). forms a vertically long notch n whose rear side is open and coincides with the front edge of the outer longitudinal movement groove ν of the support cylinder 7 (the second
figure).

A window portion δ is opened at the upper front surface of each mounting body η, and the upper portion of the window portion is cut off to form a passage groove 3.

Each mounting body η is fixed to the mounting plate 6 with bolts, with the support tube 7 sandwiched between the mounting body η and the mounting plate 6.

A front cover blade is provided on the front side of each mounting body η. The front cover blade is attached to the mounting plate 6 by sandwiching each of the mounting bodies η.

A space 31 is formed between the mounting plate 6 and the front cover blade in the front-rear direction and between the left and right mounting bodies η, and a space 31 is formed in the space 31 in the vertical direction. A moving board that moves up and down! (Fig. 1, Fig. 4).

The vertically movable plate is positioned parallel to the mounting plate 6. Up and down moving board! is formed on a bent part that bulges out to the front side with a V-shaped cross section, and a flange part U is formed on both left and right sides of the bent part wing, and the flange part moves up and down in the engagement groove formed in the mounting plate 6. mounted so that they can be engaged.

A vertical rack straw is provided on the inner surface of the bent portion.

Gear V meshes with the rack. A gear case is provided on the rear surface of the mounting plate 6, the output shaft of the gear case is made to protrude forward from the mounting plate 6, and the gear π is attached to the protrusion.
to be fixed. Although not shown in the drawings, a flexible rotating shaft of a motor provided at a desired position is connected to the gear case, and a switch for the motor is provided near the driver's seat and the rear seat.

Up and down moving board! A horizontal vertical movement shaft (3) is supported at the lower part of the front side of the vertical movement shaft (3), and both left and right ends of the vertical movement shaft (3) are connected to the inner vertical movement grooves 15 of each support tube 7 through the guide hole δ of each mounting body η. passing through and facing into each support cylinder 7 (Fig. 3), therefore,
As described above, the lower end of the inner vertically movable groove 15 is formed lower than the lower end of the outer vertically movable groove.

A guide member that moves up and down within each of the support tubes 7 is attached to both ends of the vertical movement shaft.The guide member ω is formed to have a square cross section in accordance with the cross section of the support tube 7. A pair of left and right arms 41 are formed in the upper part of the chestnut in the front-rear direction and stand upwards.The lower end of a link rod C is inserted from below between the arm parts 41 and 41, and is rotated by the lower left-right axis C. Install freely.

The upper end of the link rod 42 is connected to the leg portion 45.4 of the rotating member cage.
5, it is rotatably installed using the upper left and right shaft catches.

The positional relationship between the lower left-right axis and the upper left-right axis is such that the upper left-right axis is located behind the lower left-right axis (FIG. 5).

Each rotating member U has the support tube 7 on the top of the leg 6.6.
A cylindrical portion 47 having a rectangular cross section is formed to match the cross-sectional shape of the
The stay 4 of the headrest 1 is inserted and fixed into the cylindrical portion 47.

A guide shaft member 49 that projects laterally is provided on the leg portions 45 and strings above the shaft stop portion of the upper left and right shaft chestnuts. In this embodiment, the guide shaft member 1 is formed of a single wooden shaft, but it may be a separate piece.
The guide shafts move up and down within the inner 15, respectively, and connect to the rotating member U.
guides the vertical movement of the Then, when the guide shaft wing, the chestnut, comes into contact with the upper end of the inner vertically movable groove member 15, the rotating member U is rotated forward while restricting the upward movement of the first rotating member.

In addition, the outer guide shaft blade has an arcuate surface on the rear side.

The front side is formed into a semicircular shape with a flat surface 51, and the flat surface 51 is brought into contact with the corner ridge at the upper end of the outer vertical movement groove l, thereby rotating! Smoothly raise member a (Fig. 13).

A headrest guide mark is attached to the upper part of each mounting body η. The headrest guide group has a flange 61 formed at its upper part, and a vertical cylindrical part formed at the lower surface of the flange 61. #
In the center of the distribution section 61.

A vertical insertion hole 8 communicating with the cylindrical portion is formed.

On the front side of the flange portion 61, a circular cutout groove is formed in the front-rear direction. A window portion C communicating with the notch groove is formed on the front side of the cylindrical portion, and the stay 4 of the headrest I rotates through the notch groove and the window portion I.

A small diameter part mark is formed on the stay 4 of the headrest l, and the small diameter part outline is the notch! fli4 is configured to rotate through the passage groove B of the mounting body η.

The notch groove and the passage groove δ of the mounting body n are formed to have the same width as the small diameter portion. Therefore, the collar portion 61 of the headrest guide supports the stay 4 of the headrest l in the front-rear direction.

In the case of a rear seat, the mounting plate 6 is mounted so that the case circle is on the front side, and the headrest l is tilted forward; however, in the case of a front seat, the mounting plate 6 is mounted so that the case circle is on the front side. The headrest 1 can be installed in such a manner that the headrest 1 is tilted forward, or the mounting plate 6 can be installed so that the case I is on the rear side so that the headrest 1 is tilted backward.

(effect) Next, we will discuss the effect.

Since the present invention has the above-mentioned configuration, when the switch provided near the driver's seat or the rear seat is turned on and the motor is rotated in the forward direction, the gear U is rotated via the transmission mechanism in the gear case wing, and the gear correction is performed. By rotating, the rack I provided at the bending part of the vertically movable plate is moved upward, and the vertically movable plate! Move the whole thing up and down! moves the guide member inside the support tube 7 upward via the vertically moving shaft (FIG. 6).

The lower end of the link rod C is attached to the first upper arm 41.41 of the guide member along the lower left and right axes, and the upper end of the link rod C is mounted between the legs 6.6 of the rotating member. Because it is attached by side-to-side vehicle punishment.

The guide member cut moves the pivot member upwardly through the link rods.

An outer vertical movement 11112 and an inner vertical movement 11115 are formed on the left and right side plates of the support tube 7, and the inner and outer vertical movement grooves are formed.
5 to engage the guide shaft of the rotating member,
Up and down moving board! moves upward further and when the first rotating member reaches the forward rotation starting height, the guide shaft 49 is a medial and lateral vertical movement groove,
15 at the same time, and the upward movement of the single rotation member U is stopped.

In this state, the vertically movable plate moves further uphill, and when the guide member is cut, the link rod C moves the rotating member further upward, but the position of the upper left and right shaft 6 that attaches the link rod C to the rotating member U is is located on the rear side of the lower left and right axis, so the force to move the guide member up is the guide @U of the rotating member #
.

It acts to rotate the upper left and right shafts backwards around 49 (see figure).

Therefore, the rotating member starts rotating forward around the guide shaft blade, and the small diameter portion of the stay 4 of the headrest l passes through the notch groove-1 attachment body η of the flange portion 61 1429. It passes through the window I of the flange 61 and the window group of the mounting body η and rotates forward (FIGS. 7 and 10).

The front plate of the front half cylinder part 8 of the support @7! Since the upper end of 6 is bent forward to form a front bending part 17, the rotating member U comes into contact with the front bending part 17 and stops rotating, and the to-2 dress l is moved from the standing use state. , it falls forward and is not in use (Fig. 8, Fig. 11).

However, when the motor is reversed, the plate moves up and down! moves downward, the vertically moving plate moves the guide member C downwards via the vertically moving shaft, and the guide member C pulls the link rod C downward by the lower left and right shaft C.

The link rod C pulls the upper left and right shafts 6 downward, and the upper left and right shafts @
The shaft rotates downward around the guide shaft member 49 of the rotating member.

In this case, the outer guide shaft vane of the guide hammer of the rotary member is formed in a semi-circular shape and has a flat surface 51, and the outer longitudinal movement groove in which the guide shaft vane engages. The top edge of is corner 115
3), when the upper left and right shafts are pulled downward, the flat surfaces 51 of the guide shafts come into contact with the corner flaps and rotate as they are (Figs. 7 and 10). Therefore, since the rotating member U starts rotating in the E direction centering on the guide shaft wing and leopard at the same height position as the front rotation start position, the rotating member U can move smoothly. Standing up, headless) 1
changes from the unused state of leaning forward to the upright state.

Furthermore, a board that moves up and down! When the is moved downward, the vertical movement shaft ( ) moves the guide member C, the link rod C, and the rotating member 4 downward, so that the head 1 is positioned at the operating height.

In addition, the headrest) 1 should be stopped midway between when the headrest 1 changes from the forward-folding, unused state to the upright state until the lower surface 3 of the headrest 1 comes into close contact with the north surface of the childcare seat 2, and then It is also possible to set the height position of 1 to 7A.

(Effects) In the conventionally known device disclosed in Japanese Patent Application Laid-open No. 125935/1986, when the guide member (shoe) moves upward, the headrest is guided by the cam and falls forward. The action between the body and the cam surface requires a fairly strong force, and a small horsepower motor cannot operate smoothly, and the sliding surface makes an unpleasant squeaking noise, requiring lubrication and contaminating the inside of the vehicle. There were problems such as people getting used to doing it.

However, the present invention provides a headrest 1 having a knitted stay 4, a childcare seat 2, a support cylinder 7 provided at an upper position of the childcare seat 2 into which the stay 4 is inserted from above, and a support cylinder 7 that has a knitted stay 4. A guide member that is fitted and moves up and down within the support tube 7, a motor that directly or indirectly moves the guide member cutter up and down, and a motor that is provided in the support tube 7 and whose lower end is relative to the beginning of the guide member. The link rod C is pivotally fixed by the left and right axes, and the lower end of the stay 4, which is provided in the support cylinder 7 and whose lower end is pivotally fixed to the upper end of the link rod C by the left and right shafts, is inserted into the lower end of the stay 4. a guide shaft member and a guide shaft member that protrude from the rotating member part on both left and right sides, and a vertically movable groove member and the guide sleeve that are engaged with the guide shaft member formed on the side portion of the support tube 7. The vertical movement groove 15 in which the horse chestnut engages, and the support tube 7
and a window n formed on the front side of the upper part of the stay 4 to allow the stay 4 to fall forward. The position is rearward of the left and right axis C, and the sum of the guide members is h.
! ! 7, the stay 4 is a headrest front-back retractable storage device that automatically tilts forward. Therefore, the use of the link rod υ and its shaft locking structure can be adjusted to the left and right axes at the lower position. 43 in front of the left and right shaft portions at the upper position, it is possible to easily tilt forward, there is no squeak, and there is no need for lubrication, making it possible to create a front-rear retractable storage device for the Hef dress.

[Brief explanation of drawings]

Fig. 1 is a perspective view, Fig. 2 is an assembled perspective view, Fig. 3 is a partially longitudinal front view, Fig. 4 is a cross-sectional view, Fig. 5 is a vertical sectional side view, and Figs. 6 to 1! The figure is a perspective view showing the operating state, Figure 4~
FIG. 14 is a longitudinal sectional side view showing the operating state. Explanation of symbols 1...Headrest, 2...Childcare seat, 3...
Lower surface, 4... Stay, 5... Frame, 6... Mounting plate, 7... Support cylinder, 8...-Front half cylinder part, 9...
Rear half cylinder part, ]0.11...Outer plate, l...Outer vertical movement groove, 13.14...Inner plate, 15...Inner vertical movement groove, 16...Front plate, 17...Previous aS song section, 18.
... Posterior plate, 19...bulge, modification... protrusion. 21... Engagement hole, 22... Mounting body, n... Engagement hole, 24... Outer plate, b... Guide hole, 26... Inner plate, 27... Notch part , redundancy...window section, 3...passing groove, luster...front case, 31...space section,! ... Vertical moving plate, wing... bending part, ah... flange, 35...
Movement groove, I...rack, correction...gear, (...gear case, 39...rotating shaft, 40...guiding member, 41
...Arm part, C...Link rod, 43...Lower left and right shaft, 44...Rotating member, 6...Leg part, ... Upper left and right shaft, 47...Cylinder part, wing, 49... guide shaft, seki -
・Circular surface, 51...Flat surface, 8...-corner, 60...
・To h(-Rest guide, 61...Trim section, Dry...
・Cylinder part, Akira...insertion hole, tatami...notch groove, 65...
Window section, garden... path section.

Claims (1)

[Claims] Headrest 1 with vertical stays 4 and back seat 2
a support cylinder 7 into which the stay 4 provided at the upper position of the backrest seat 2 is inserted from above; a guide member 40 that is fitted into the support cylinder 7 and moves up and down within the support cylinder 7; a motor that directly or indirectly moves the guide member 40 up and down;
A link rod 42 is provided in the support tube 7 and has a lower end pivoted to the guide member 40 by a left and right shaft 43; A rotary member 44 that is fixed to the shaft and into which the lower end of the stay 4 is inserted, a guide shaft 48 and a guide shaft 49 that protrude from the rotary member 44 to both left and right sides, and the support tube 7
the vertical movement groove 1 in which the guide shaft 48 formed on the side engages;
2 and the guide shaft 49 engage with each other, and a window 28 formed on the front side of the upper part of the support tube 7 for tilting the stay 4 forward. The positional relationship of the left and right shafts 46 is such that the left and right shafts 46 at the upper position are positioned rearward than the left and right shafts 43 at the lower position, and when the guide member 40 is moved upward, the stay 4 automatically falls forward. Front and rear foldable headrest storage device.