JP2003220897A - Supporter for in-vehicle display unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a supporter for an in-vehicle display unit in which the display unit or an arm is surely prevented from being damaged even when an external force of a predetermined value or more is applied to the arm at which the display unit is mounted. <P>SOLUTION: The supporter for the in-vehicle display unit comprises an engaging member 11 provided at a bracket 4 side fixed to a strut 3 of a headrest, a linear spring 10 provided at the arm 5 side at which the display unit 2 is mounted at its distal end so that protrusion 11a of the member 112 is locked by the curved part 10a of the spring 10 to fix the arm 5 to the bracket 4. Thus, when the external force of a predetermined value or more is applied to the arm 5, the curve part 10a is expanded to release the protrusion 11a, thereby releasing fixing of the arm 5 to separate the arm from the bracket 4. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support for installing a display device such as a car navigation monitor or a small TV at a predetermined position in a vehicle, and is particularly suitable for viewing by a passenger in the rear seat. The present invention relates to a support for a vehicle-mounted display device.

[0002]

2. Description of the Related Art Conventionally, when a rear display device for passengers in a rear seat is installed in a vehicle,
There is known a support structure in which a support tool is fixed to a pillar of a headrest provided in a front seat and a display device is attached to a tip end side of the support tool. The support is roughly composed of a bracket fixed to a column of a headrest and an arm extending laterally from the bracket, and a display device is attached to the tip end side of the arm.

In this case, the arm is rotatably attached to the bracket and is fixed at an arbitrary attachment angle by operating a lever. Similarly, the display device is also rotatably attached to the arm and is fixed at an arbitrary attachment angle by operating another lever. Therefore, after adjusting the mounting angles of the arm and the display device and operating both levers to fix these mounting angles, the display device can be maintained in an optimum posture for the passenger in the rear seat.

[0004]

By the way, in the above-mentioned conventional support, if the mounting angle between the arm and the display device is adjusted and then fixed, the bracket, the arm and the display device become a unified rigid body, After that, the passenger in the rear seat watches the display device in this state. For this reason, when an external force of a predetermined amount or more is applied to the arm, if the passenger hits the display device or the arm due to, for example, sudden braking, the impact may damage the display device or the arm.

The present invention has been made in view of the circumstances of the prior art as described above, and an object of the present invention is to provide an arm to which a display device is attached, even if an external force larger than a predetermined value is applied.
An object of the present invention is to provide a support for a vehicle-mounted display device that can reliably prevent damage to the display device and the arm.

[0006]

According to the present invention, the rear end side of an arm to which a display device is attached at the front end side is fixed to a bracket through an engaging / disengaging mechanism, and when an external force of a predetermined amount or more is applied to the arm, The arm is unlocked by this engaging / disengaging mechanism and separated from the bracket. If the support of the in-vehicle display device is provided with such an engagement / disengagement mechanism, even if a passenger bumps into the display device or arm due to sudden braking or the like and an external force greater than a predetermined amount is applied to the arm, By releasing the fixing and separating from the bracket, the external force applied to the arm can be absorbed.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A support for an on-vehicle display device according to the present invention includes a bracket attached to an installation member in a vehicle and an arm to which a display device is attached on a tip side, and a rear end side of the arm is the bracket. The arm is fixed via the engagement / disengagement mechanism, and when an external force of a predetermined amount or more is applied to the arm, the arm is released from the engagement / disengagement mechanism and separated from the bracket.

According to this structure, when an external force exceeding a predetermined level is applied to the arm, the fixing of the arm by the engagement / disengagement mechanism is released, and the arm is separated from the bracket to absorb the external force. It is possible to reliably prevent damage to the.

In the above structure, the engagement / disengagement mechanism includes an engaging member and a spring member that elastically supports the engaging member, and one of the engaging member and the spring member is provided on the arm. It is preferable that either one of them is provided on the bracket and the spring member is disengaged from the engaging member to release the fixing of the arm when an external force of a predetermined amount or more is applied to the arm. At that time, if the engaging member has a shaft portion and a protrusion provided at the tip thereof, and the spring member has a pair of curved portions having a smaller diameter than the protrusion and facing each other via the shaft portion, the spring is formed. By engaging the curved portions of the member with the protrusions of the engaging member, the arm can be stably fixed to the bracket,
When an external force of a predetermined amount or more is applied to the arm, both curved portions of the spring member expand and release the engagement with the protrusion of the engaging member, so that the arm can be reliably separated from the bracket.

Further, in the above construction, if the wire for connecting the arm and the bracket is provided, and the connection state between the arm and the bracket is maintained by the wire when the arm is separated from the bracket, the wire is fixed to the bracket. It is possible to prevent the released arm from jumping out undesirably. At that time, it is preferable to insert the wire movably in the axial direction of the engaging member and to provide a stopper that can be locked to the engaging member at one end of the wire. By setting it, it is possible to limit the movable range of the arm that jumps out of the bracket.

Further, in the above structure, it is preferable that the arm is covered with a cushioning member made of a soft material, so that the shock applied to the arm can be softened by the cushioning member.

[0012]

EXAMPLES Examples will be described with reference to the drawings.
1 is a front view showing the installation state of the support tool, FIG. 2 is a plan view of the support tool, FIG. 3 is an explanatory view showing a state in which the fixing of the arm is released, and FIG. 4 is an exploded perspective view of the support tool. 5 is a cross-sectional view showing the engagement / disengagement mechanism, FIG. 6 is an operation explanatory view of the engagement / disengagement mechanism, FIG. 7 is a cross-sectional view taken along the line AA of FIG. 5, FIG. 8 is a cross-sectional view showing a mounting portion of the display device, FIG. 9 is an explanatory diagram showing a mounting state of the display device.

As shown in FIGS. 1 and 2, the support 1 of the vehicle-mounted display device according to this embodiment is installed, for example, so as to extend laterally from the headrest of the front seat, and the car navigation is provided at the tip side thereof. Monitor and display device 2 such as small TV
Is attached and used. The screen of the display device 2 is composed of a thin display member such as a liquid crystal display. The support 1 is roughly composed of a bracket 4 fixed to a column 3 of the headrest and an arm 5 fixed to the bracket 4 via an engagement / disengagement mechanism described later. The bracket 4 and the arm 5 are rigid. It is made of high metal material.

The bracket 4 is an L-shaped member formed by bending a connecting portion 4b on one end side of the plate-shaped portion 4a.
A pair of guide holes 4c extending in the longitudinal direction is formed in a, and an oval through hole 4d is formed in the connecting portion 4b. A pair of mounting brackets 6 are arranged on the back surface of the plate-shaped portion 4a, and the bracket 4 is tightened by tightening a plurality of bolts 7 with the support column 3 positioned between both mounting brackets 6 and the plate-shaped portion 4a. Are fixed to the columns 3. In this case, the bolt 7 is inserted through the guide hole 4c and the mounting bracket 6
The brackets 4 can be fixed to various headrests having different distances between the support columns 3 because the mounting brackets 6 are screwed together and the distance between the two mounting brackets 6 can be adjusted within the range of the guide holes 4c. The bracket 4 is a decorative cover 8 made of synthetic resin.
The decorative cover 8 is formed with an opening that faces the mounting bracket 6 and the bolt 7.

The arm 5 is a columnar member having a conical portion 5a (see FIG. 8) at its tip, and a metal cap 9 is screwed to its rear end. As shown in FIGS.
A circular hole 9a is formed in the end surface of the metal cap 9,
Both ends of two wire springs 10 are fixed to the inside of the metal cap 9 by welding or the like. Each of the wire springs 10 is formed with a curved portion 10a.
Face each other so as to spread outward inside the circular hole 9a. The protrusion 1 of the engaging member 11 is provided between the curved portions 10a.
1a is sandwiched and locked, and the diameter of the protrusion 11a is set to be larger than the interval between the curved portions 10a. Further, the engaging member 11 is provided with a shaft portion 11b having a diameter smaller than that of the protrusion 11a, and the shaft portion 11b has an oval cross section. The shaft portion 11b is inserted through the circular hole 9a and the through hole 4d and protrudes from the connecting portion 4b. The nut 14 is screwed into the shaft portion 11b through the washer 12 and the spring washer 13 to thereby engage the engaging member 11 Are fixed to the bracket 4. Therefore, the arm 5
The curved portion 10 a of the wire spring 10 is the protrusion 11 of the engaging member 11.
It is fixed to the bracket 4 by being locked to a, and the wire spring 10 and the engaging member 11 constitute the engaging / disengaging mechanism described above.

A metal wire 15 is inserted through the engaging member 11, and a stopper member 16 and a hook member 17 are caulked and fixed to both ends of the wire 15. The wire 15 located between the stopper member 16 and the hook member 17 is set to be longer than the entire length of the engagement member 11, and the wire 15 can move in the axial direction of the engagement member 11 by this surplus. The hook member 17 is inserted inside a bottomed hole 5b provided in the rear end surface of the arm 5, and a through hole 17a formed at the tip thereof is fitted into a set screw 18 penetrating the bottomed hole 5b. Therefore, it is fixed to the arm 5 side.

As shown in FIG. 8, the conical portion 5 of the arm 5
A circular guide hole 5c is provided at the center of the end face of a,
Around the guide hole 5c, a pair of taper portions 5d slightly inclined in the circumferential direction are formed with a 180-degree phase shift. A holding member 19 is screwed to the end surface of the conical portion 5a, and the notch 2 is formed at the center of the holding member 19.
The guide cylinder 20 having 0a is locked. The spherical portion 21a of the lever 21 is swingably housed inside the guide cylinder 20, and the lever 21 can be tilted into the cutout portion 20a. A nut 22 is screwed onto the tip of the lever 21, and as shown in FIG.
It is designed to be attached to the tip of 1.

Further, the adjusting ring 2 is provided outside the holding member 19.
The ring portion 23a of the outer ring 3 is externally fitted, and the adjusting ring 2
At the center of 3, there is provided a support portion 23b for supporting the spherical portion 21a of the lever 21. The annular portion 23a and the support portion 23b are connected in a direction orthogonal to the paper surface of FIG.
Although not shown, the holding member 19 and the adjustment ring 23
A predetermined distance is secured in the circumferential direction between and. A protrusion 23c is provided at the center of the rear end surface of the support portion 23b, and a pair of tapered portions 23d slightly inclined in the circumferential direction are formed around the protrusion 23c with a 180-degree phase shift. The protrusion 23c of the adjusting ring 23 is the arm 5
Is inserted in the guide hole 5c, and the arm 5 and the tapered portions 5d and 23d of the adjusting ring 23 face each other. Therefore, by rotating the annular portion 23a, the tapered portions 5d, 23
When the facing positions of d are changed, the adjustment ring 23 moves in the axial direction of the arm 5 (left-right direction in FIG. 8), and the support portion 23b presses the spherical portion 21a of the lever 21 against the guide cylinder 20 accordingly. Or relax. The arm 5 is covered with a buffer member 24 made of a soft material such as rubber or synthetic resin, and the holding member 19 and the annular portion 23a of the adjusting ring 23 are also integrally covered with the same buffer member 25. .

In the support 1 according to the above-described embodiment, by fixing the bracket 4 to the column 3 of the headrest, the arm 5 fixed to the bracket 4 via the engaging / disengaging mechanism is projected to the side of the headrest. Is installed. And
The display device 2 is attached to the lever 21 supported on the tip side of the arm 5.
After the attachment, the display screen of the display device 2 is used in a state in which the display screen of the display device 2 is set to the optimum angle for the passenger in the rear seat, as shown by the chain double-dashed line in FIG. To adjust the angle of the display device 2, the lever 21 is first tilted into the cutout portion 20a of the guide cylinder 20 in a state where the pressure contact of the spherical portion 21a by the support portion 23b of the adjustment ring 23 is released. The display screen may be turned to the rear seat side, and thereafter, the annular portion 23a of the adjustment ring 23 may be rotated via the cushioning member 25. As a result, the support portion 23b presses the spherical portion 21a against the inner surface of the guide cylinder 20 and the spherical portion 21a of the lever 21 is fixed to the guide cylinder 20, so that the attitude of the display device 2 whose angle is adjusted can be maintained. .

Here, when an external force of a predetermined amount or more is applied to the arm 5 with the support 1 installed on the headrest, for example, when the occupant bumps into the display device 2 or the arm 5 due to sudden braking or the like, FIG. As shown in FIG. 5, the fixing of the arm 5 by the engagement / disengagement mechanism is released, so that the display device 2 and the arm 5 can be prevented from being damaged by the impact. That is, in the arm 5, the curved portion 10 a of the wire spring 10 is attached to the engaging member 1.
Although it is fixed to the bracket 4 by being locked to the protrusion 11a of the arm 1 (see FIG. 5), the arm 5 is
When a predetermined external force is applied to the pair of bending portions 10a
6 spreads outward and is disengaged from the protrusion 11a, so that the fixing of the arm 5 to the bracket 4 is released, as shown in FIG. In this case, since the stopper member 16 fixed to one end of the wire 15 is locked to the end surface of the engaging member 11 and the bracket 4 is connected to the arm 5 by the wire 15, the fixation to the bracket 4 is released. It is possible to prevent the arm 5 from popping out undesirably. The length of the wire 15 is, for example, the arm 5 with respect to the bracket 4.
When the fixing of is released and the arm 5 is tilted, the corner portion of the metal cap 9 hits the connecting portion 4b of the bracket 4 and the tilt angle range of the arm 5 is set within 45 ° in all directions. be able to.

Further, since the arm 5 and the holding member 19 and the adjusting ring 23 provided at the tip thereof are covered with the cushioning members 24 and 25 made of a soft material, the arm 5 and the holding member 19 are added. The shock itself is shock-absorbing member 24,
It can be relaxed by 25.

Further, since the mounting angle of the display device 2 is adjusted by rotating the adjusting ring 23, it is possible to eliminate a protrusion such as an operating lever for adjusting the angle.

In the above embodiment, the engaging / disengaging mechanism is constituted by the engaging member 11 provided on the bracket 4 side and the wire spring 10 provided on the arm 5 side. However, conversely, While providing the wire spring 10 on the bracket 4 side,
It is also possible to provide the engaging member 11 on the arm 5 side.

Further, the structure of the engagement / disengagement mechanism is not limited to the above-mentioned embodiment, and any structure can be used as long as the fixing of the arm 5 to the bracket 4 is released when an external force of a predetermined amount or more is applied to the arm 5. Good.

[0025]

The present invention is carried out in the form as described above, and has the following effects.

The rear end side of the arm to which the display device is attached at the front end side is fixed to the bracket through the engagement / disengagement mechanism, and when an external force more than a predetermined amount is applied to the arm, the engagement / disengagement mechanism fixes the arm. Since it is configured to be released and separated from the bracket, when the passenger hits the display device or arm due to sudden braking etc., the impact is absorbed by the unlocking of the arm and the damage to the display device and arm is reliably prevented. can do.

[Brief description of drawings]

FIG. 1 is a front view showing an installed state of a support according to an embodiment.

FIG. 2 is a plan view of the support.

FIG. 3 is an explanatory diagram showing a state in which the fixing of the arm is released.

FIG. 4 is an exploded perspective view of the support tool.

FIG. 5 is a cross-sectional view showing an engagement / disengagement mechanism.

FIG. 6 is an operation explanatory view of the engagement / disengagement mechanism.

7 is a sectional view taken along the line AA of FIG.

FIG. 8 is a cross-sectional view showing a mounting portion of the display device.

FIG. 9 is an explanatory diagram showing a mounting state of the display device.

[Explanation of symbols]

1 support 2 display 4 bracket 5 arms 5b bottomed hole 9 Metal cap 9a circular hole 10 wire spring 10a curved part 11 Engagement member 11a protrusion 11b Shaft 14 nuts 15 wires 16 Stopper member 17 Hook member 18 Set screw 21 lever 21a spherical part 23 Adjustment ring 23a annular part 23b Support part 24,25 cushioning member

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shoichiro Kiuchi             2430-1 Higashiuchi, Maruko-cho, Oka-gun, Nagano (72) Inventor Kenichi Kiuchi             2430-1 Higashiuchi, Maruko-cho, Oka-gun, Nagano (72) Inventor Katsuya Kiuchi             2430-1 Higashiuchi, Maruko-cho, Oka-gun, Nagano (72) Inventor Morito Suzuki             2337-9 Hachiman, Sarahima City, Nagano Prefecture F-term (reference) 3B088 CA06 CA15                 3D020 BA05 BB01 BC11 BD09

Claims (6)

[Claims] 1. A bracket, which is attached to an installation member in a vehicle, and an arm, to which a display device is attached, on a front end side, wherein a rear end side of the arm is fixed to the bracket through an engaging / disengaging mechanism, and a predetermined length is fixed to the arm. A support for a vehicle-mounted display device, characterized in that, when the above external force is applied, the fixing of the arm by the engaging / disengaging mechanism is released and the arm is separated from the bracket. 2. The engagement / disengagement mechanism according to claim 1, wherein the engagement / disengagement mechanism includes an engagement member and a spring member elastically supporting the engagement member, and one of the engagement member and the spring member is provided. Is provided on the arm and the other is provided on the bracket, and the spring member is disengaged from the engaging member to release the fixing of the arm when an external force of a predetermined amount or more is applied to the arm. A support tool for an in-vehicle display device, which is characterized in that: 3. The engagement member according to claim 2, wherein the engagement member has a shaft portion and a protrusion provided at a tip thereof, and the spring member has a diameter smaller than that of the protrusion and faces the shaft portion via the shaft portion. A support tool for a vehicle-mounted display device, which has a pair of curved portions. 4. The wire according to claim 2 or 3, further comprising a wire connecting the arm and the bracket, wherein the wire maintains a connection state between the arm and the bracket when the arm is separated from the bracket. A support tool for a vehicle-mounted display device, which is configured as described above. 5. The method according to claim 4, wherein the wire is movably inserted in the axial direction of the engaging member, and a stopper capable of locking the engaging member is provided at one end of the wire. A supporting tool for a vehicle-mounted display device. 6. The support for a vehicle-mounted display device according to claim 1, wherein the arm is covered with a cushioning member made of a soft material.