JPH06336135A - Bending device - Google Patents

Abstract

PURPOSE:To obtain a bending device which possesses the excellent outside appearance and touch feeling, and permits the smooth bending with a light operating force, by integrally covering the outer peripheral part of a core body by a skin body consisting of a soft skin member and covering the outer peripheral part of the bending part of the core body by a deformable bellows body. CONSTITUTION:An accommodating recessed part 14 which is positioned over the side part of a seat and is opened in a car room is formed on the roof side panel 11 of an automobile. An assisting grip 21 as bending device is installed at the accommodating recessed part 14. The assisting grip 21 is equipped with a core body 22 which can be bent at the bendable parts 22a at two places, a pair of bellows bodies 23 fitted with a core body 22 so as to cover the bendable part 22a, and a skin body 24 consisting of the soft skin body which is formed so as to integrally cover the outer peripheral part of the core body 22 and the bellows body 23, leaving both the edge parts of the core body 23. The assisting grip 21 is pulled inside the car room and used by pulling the assisting grip 21 to this side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bendable bending device in which a soft skin is provided on the outer periphery of a core having a bendable bend.

[0002]

2. Description of the Related Art Conventionally, for example, a so-called assist grip is attached to an inner surface of a roof side panel located above a side portion of each seat in an automobile,
By gripping the assist grip when traveling on a rough road or turning the vehicle, the occupant can maintain the posture.

However, such an assist grip is fixed in such a state that it always protrudes from the inside of the roof side panel into the vehicle compartment, which is not preferable in terms of appearance, and the surface portion of the assist grip is relatively hard. It was made of material and was not comfortable to grip.

Therefore, for example, the assist grip 1 shown in FIG. 9 can be considered.

The assist grip 1 is constructed by integrally insert-molding a soft skin body 3 around a core body 2 which can be bent at a predetermined position.

That is, in the core body 2, a hinge portion 4a provided at both ends of a round bar-shaped center link 4 is linked to a hinge portion 5a provided at each one end of a pair of round bar-shaped side links 5. It is configured to be rotatably connected by a pin 6. Further, elongated holes 5c are formed in the hinge portions 5b provided at the other ends of the side links 5, respectively. Then, in a state where the core body 2 is mounted on a mold, a reactive semi-cured urethane material is injected into the mold to foam and fill, and the skin body 3 is integrally insert-formed around the core body 2. Then, the assist grip 1 is configured.

On the other hand, a storage recess 8 is formed in a roof side panel 7 of an automobile, and a support 9 having support pins 9a is attached to both ends of the storage recess 8. The assist grip 1 is supported in a state in which the support pins 9a are rotatably and slidably inserted into the long holes 5c at both ends of the core body 2, respectively.

In this way, this assist grip 1
When not needed, it is pushed into the storage recess 8 and stored in a linearly extended state. Then, if necessary, by pulling the assist grip 1 toward the front side, the core body 2 is bent at the hinge portions 5a and 5b, and the elongated hole 5c is formed at the support pin 9a.
The assist grip 1 is pulled out into the vehicle compartment while sliding around the fulcrum as a fulcrum. Furthermore, since the periphery of the core body 2 is covered with the soft skin body 3, the gripping comfort is improved.

[0009]

However, in the above-mentioned conventional structure, when the reactive semi-curable urethane material is injected into the mold in which the core body 2 is mounted, this reactive semi-curable urethane material causes the foaming pressure to rise. As a result, they enter the gap between the hinge portion 4a of the center link 4 and the hinge portion 5a of the side link 5 and are cured by reaction. Therefore, the skin body 3 is not only integrally joined to the center link 4 and the side link 5, but also the center link 4 and the side link 5 are bonded to each other, so that the center link 4 and the side link 5 are connected. It becomes difficult for the part to rotate.

Further, in the state where the assist grip 1 is pulled out to the front side, the skin member located inside the connecting portion
3a is compressed and the epidermis 3b located outside this connecting part
Will be stretched. At this time, since the skin body 3 bites into and is in close contact with this connecting portion, the compressive stress and the tensile stress of the skin body 3 are concentrated in an extremely narrow range near the connecting portion, and the operation force for pulling out the assist grip 1 is extremely high. It has the problem of becoming large.

The present invention has been made in view of the above points, and an object of the present invention is to provide a bending device which has a good appearance and a tactile sensation and which can be smoothly bent with a light operating force.

[0012]

A bending device of the present invention comprises a core body having a bendable bend portion, and a core body fitted to the core body.
A bellows body having a deformable hollow bellows portion that covers at least the outer circumferential portion of the bent portion, and a skin body made of a soft skin material that integrally covers the outer circumferential portions of the core body and the bellows body are provided. It is a thing.

[0013]

In the bending apparatus of the present invention, the outer peripheral portion of the core is integrally covered with the skin made of the soft skin material, so that the appearance and the touch are improved. Since the outer peripheral portion of the bent portion of the core body is covered with the deformable bellows body, the skin material that integrally covers the outer peripheral portion of the core body and the bellows body does not adhere to the bent portion of the core body. The bending action is not hindered by the epidermis, and the stress applied to the epidermis when the bent portion is bent is dispersed.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of one embodiment of the bending device of the present invention will be described below with reference to the drawings.

In FIGS. 1 to 4, reference numeral 11 denotes a roof side panel, which is attached to a vehicle body panel 12 above a side portion inside a vehicle at a predetermined interval. The roof side panel 11 is formed with a storage recess 14 that is located above the side of the seat 13 and opens into the vehicle compartment. A so-called assist grip 21 as a bending device is attached to the storage recess 14. There is.

The assist grip 21 includes a core 22 that can be bent at two bends 22a and 22a, and a core 22 that covers at least these bends 22a and 22a, respectively.
A pair of bellows bodies 23, 23 fitted to each other, and a soft body formed so as to integrally cover the outer peripheral portions of the core body 22 and the bellows bodies 23, 23, leaving both ends of the core body 22. It has an epidermis 24 made of an epidermis material.

The core 22 has a center link 26 and a pair of side links 27, 27 each formed in a round bar shape or a plate shape, and these links 26, 27, 27 are
They are made of steel such as iron, light alloys such as aluminum alloy and magnesium alloy, synthetic resin, or resin such as fiber reinforced nylon and fiber reinforced polyester.

From both ends of the center link 26,
Plate-like link portions 26a 1 and 26a 2 are provided so as to project, and circular holes 26b 1 and 26b 2 are provided in these link portions 26a 1 and 26a 2, respectively.
Are formed.

On the other hand, one end of each side link 27 is provided with a link portion 27a which is a plate body facing each other with a predetermined space therebetween, and the link portion 27a slides on the link portion 26a of the center link 26. It is designed to fit freely. A circular hole 27b communicating with the circular hole 26b of the link portion 26a of the center link 26 is formed in the link portion 27a of each side link 27. Further, the circular hole 27b of the link portion 27a of each side link 27 is formed with a locking concave portion 27c whose diameter is increased stepwise outward.

Further, a supporting portion 27d is formed near the other end of each side link 27, and the supporting portion 27d is formed.
A long hole along the longitudinal direction of each side link 27.
27e is formed.

Then, the circular holes 26b of the links 26, 27, 27,
These links 26, 27, 27 are rotatably connected to each other by a shaft member 31 such as a rivet or a bolt which is inserted through the 27b, 27b and is locked in each locking recess 27c. A bendable core 22 is composed of 22a and 22a.

Further, the bellows body 23 fitted in each bent portion 22a of the core body 22 is formed in a hollow shape from a flexible synthetic resin which is flexible or elastically deformable, and has a bellows shape. At both ends of the bellows portion 23a, there are formed cylindrical sealing portions 23b which are closely fitted to the respective links 26, 27, 27. The inner surface of the bellows portion 23a of each bellows body 23 is
While slidably abutting on the outer surface of the bellows portion 23a,
It is adapted to be integrally joined to the epidermis 24.

Further, these core body 22 and bellows body 23,
The outer skin 24 that integrally covers the outer peripheral portion of 23 has a cylindrical shape with substantially the same outer diameter dimension over the entire length, and by reactively curing a synthetic resin raw material such as a reactive semi-cured urethane material,
The core body 22 and the bellows bodies 23, 23 are formed so as to be in close contact with and joined to each other.

Further, as shown in FIGS. 1 and 2, support members 41, 41 are attached to the roof side panel 11 at positions near both ends in the longitudinal direction of the storage recess 14 of the roof side panel 11. Each support member 41 is located on the back surface side of the roof side panel 11,
Each is fixed to the vehicle body panel 12 by screws 42 or the like. Further, from each support member 41, the support pin 43
Is projected.

The support pin 43 is supported by inserting the support pins 43 into the long holes 27e at both ends of the assist grip 21 in a rotatable and slidable manner.

The assist grip 21 is shown in FIG.
As shown in, when not needed, it is pushed into the storage recess 14,
It is stored in a straight line. In this state, the surface of the assist grip 21 that faces the vehicle interior is formed to be substantially flush with the surface of the roof side panel 11.

Further, if necessary, the assist grip 21 is pulled toward the front side, as shown in FIG.
The bending portion 22a of the core body 22 bends around each shaft member 31 as a fulcrum, and the support pins 43 and each elongated hole 35 slide while bending around the support pin 43 as a fulcrum.
Is drawn into the passenger compartment.

Next, the manufacturing process of the assist grip 21 will be described.

First, the center link 26 and the pair of side links 27, 27 are rotatably connected by a shaft member 31 to form a core body.
22 and the bent portions 22a, 22a of the core 22.
The bellows bodies 23, 23 are fitted to the respective. In this state, the sealing portion 23b of each bellows body 23 is closely fitted to the peripheral surface of each link 26, 27, 27, and each bent portion 22a is sealed inside each bellows body 23.

Then, for example, both ends of the core body 22 into which the bellows bodies 23, 23 are fitted are sandwiched between a pair of molds (not shown) forming the skin body 24 and supported, and the core body 22 is held. The parts other than the both ends of the are mounted (inserted) in the cavity formed between the molds.

Then, a reactive semi-cured urethane material is injected and foam-filled inside the mold.

Then, the urethane material is cured by reaction inside the mold, the skin body 24 is integrally bonded around the core body 22 and the bellows bodies 23, 23, and the assist grip 21 is insert-molded.

According to the assist grip 21 of the present embodiment, when it is unnecessary, the occupant pushes it into the storage concave portion 14 or linearly extends it by its own urging force, so that the roof side panel 11 and the roof side panel 11 are almost linearly extended. Since they are housed in the housing recess 14 so as to be flush with each other, the space in the vehicle compartment can be effectively used and the appearance can be improved.

If necessary, the occupant pulls the assist grip 21 to the front side so that the assist grip 21 can be pulled out and used in the passenger compartment.

Further, since the periphery of the core body 22 is integrally covered with the skin body 24 made of a soft synthetic resin, the surface portion has a soft feeling and improves the appearance and gripping comfort of the assist grip 21. be able to.

Further, at least the bent portions 22a, 22 of the core body 22
The outer periphery of a is covered and sealed with hollow bellows bodies 23, 23, and a composite structure in which the core body 22 and the bellows bodies 23, 23 are covered with a skin body 24 as an assist grip.
Since 21 is configured, when the resin raw material is injected into the cavity of the mold, even if the injection pressure of the resin raw material or the foaming pressure is applied, the resin raw material enters the bellows bodies 23, 23. This resin raw material does not bend
, 22a does not come into close contact with and cure between the link portions 26a, 27a, and the bending operation of the bending portions 22a, 22a of the core body 22 is not hindered.

Further, the vicinity of the bent portions 22a, 22a is a bellows body.
Since it is covered with 23, 23, the skin body 24 does not adhere to the bent portions 22a, 22a of the core body 22 in the vicinity thereof. Therefore, when the bent portions 22a, 22a are bent, the bellows bodies 23, 23 extend and contract while slidingly contacting the core body 22, and the compressive stress and the tensile stress generated in the skin body 24 are dispersed in a wide range. However, the load of pulling out the assist grip 21 from the storage recess 14 can be significantly reduced.

Although the bending device is used as the assist grip 21, it can also be used as a knob 52 for an interior door 51, as shown in FIGS. 5 and 6, for example.

The indoor door 51 is rotatably supported by the door frame 54 via a hinge portion 51a. A storage recess 55 that opens to the room is formed in the interior door 51, and a knob 52 having the same structure as the assist grip 21 is attached to the storage recess 55.

As shown in FIG. 6, the knob 52 is also housed in the housing recess 55 when not needed, so that the space in the room can be effectively used and the appearance can be improved. By pulling it towards you,
It can be used as the knob 52.

Further, the bending device is a folding stroller (baby carriage) as shown in FIGS. 7 and 8, for example.
It can also be used for a safety bar (safety rod) 62 of 61 and a push handle 63.

That is, the stroller 61 is formed by connecting a pair of lower frames 65 arranged in a substantially C-shape and an upper frame 66 having a substantially U shape, and between the frames 65, 66. A seat (not shown) on which an infant sits is supported. Wheels 68 are attached to the lower ends of the lower frames 65, respectively. Also,
A side frame 71 is connected to each of the frames 65 and 66 located on both sides of the seat, and a safety bar (safety rod) located on the front side of the seat between the side frames 71 protects the infant. ) 62 is rotatably connected. Furthermore, the upper frame 66 is a pair of vertical frames on both sides.
73 and a hand push handle 63 rotatably connected to the upper ends of the vertical frames 73.

The safety bar 62 and the hand push handle 63 have substantially the same structure as the assist grip 21 shown in FIGS.
And a pair of side links 77, 77 are rotatably connected by a shaft member 31, and a core body 78 that is bent at two bent portions 78a, 78a is configured.

Further, the core body 78 has an assist grip.
Unlike 21, the center link 76 from the bent portions 78a, 78a
Is provided with a bellows body 79 in which a bellows portion 79a having a large length is integrally formed. Then, with the sealing portions 79b at both ends of the bellows body 79 closely fitted to the peripheral surfaces of the side links 77, the vicinity of the bent portions 78a, 78a and the center link 76 are sealed inside the bellows body 79. It is supposed to be done.

A safety bar 62 and a hand push handle 63 are formed by integrally forming a skin 80 around the core body 78 and the bellows body 79.

By using the safety bar 62 and the hand push handle 63, the appearance and feel can be improved, and the safety bar 62 and the hand push handle 63 can be easily bent as shown by the chain double-dashed line in FIG. Therefore, the stroller 61 can be folded small with a light operating force.

Further, in the present embodiment, since the bellows body 79 having the bellows portion 79a having a large length dimension which integrally covers the center link 76 from the bent portions 78a, 78a is used, the deformation stress of the skin body 24 is prevented. It can be dispersed in a wide range, and the bending portions 22a, 22a can be bent with a lighter operating force.

[0048]

According to the bending device of the present invention, since the outer peripheral portion of the core is integrally covered with the soft skin, the appearance and the touch can be improved. In addition, since the outer periphery of the bent portion of the core is covered with the deformable bellows, the skin material that integrally covers the outer periphery of the core and the bellows does not adhere to the bent portion of the core and bends. The bending action of the part is not hindered by the epidermis, and the stress applied to the epidermis when the bent part is bent is dispersed, so that the part can be smoothly bent with a light operating force.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a bending device of the present invention with an assist grip pulled out.

FIG. 2 is a sectional view showing a state in which an assist grip is pushed in as above.

FIG. 3 is a partial sectional view of the same assist grip.

FIG. 4 is a perspective view of the interior of the vehicle showing the use state of the above assist grip.

FIG. 5 is an explanatory view of a usage state of a knob showing another embodiment of the present invention.

FIG. 6 is an explanatory diagram showing a housed state of the knob.

FIG. 7 is a perspective view of a stroller having a safety bar and a push handle according to another embodiment of the present invention.

FIG. 8 is a cross-sectional view of the same safety bar and push handle.

FIG. 9 is a partial cross-sectional view of a conventional assist grip.

[Explanation of symbols]

 21 Assist grip as a bending device 22 Core 22a Bend 23 Bellows 23a Bellows 24 Skin

Claims (1)

[Claims] 1. A core body having a bendable bend portion, and a bellows body fitted to the core body and having a deformable hollow bellows portion that covers at least an outer peripheral portion of the bend portion. A bending device, comprising: a core body and a skin body made of a soft skin material that integrally covers outer peripheral portions of the bellows body.