JPH09207565A - Roll curtain device of car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a roll curtain device for car, which can ensure smooth operation even in case there is a hindrance such as a hendrance of a body of an occupant. SOLUTION: A roll curtain device 10 for a car includes arm constituent members 46, 48, 50, 52 which are coupled in such a way that the arm 44 reduces its thickness from the base end toward the tip. Accordingly the arm 44 reduces its stiffness toward the tip and is bent alongside the inclination of a rear window glass 14 by the reaction force given from the glass 14 when it is touched by a guide roller 68. This permits a curtain sheet 18 to be drawn out smoothly without interference of the arm 44 with the head of a person seated on the rear seat.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle roll curtain device installed in a vehicle compartment.

[0002]

2. Description of the Related Art As a type of curtain provided near a rear windshield in a vehicle compartment, a roll curtain device for a vehicle, which allows the curtain to be wound up when not needed, is generally adopted. An example of the vehicle roll curtain device is disclosed in Japanese Utility Model Laid-Open No. 4-31577.

That is, the vehicle roll curtain device disclosed in this publication is provided with a pair of support members provided on the lower cabin side of the rear window glass on the vehicle interior side.
These support members are arranged to face each other at both ends in the vehicle width direction. A winding shaft to which one end of the curtain sheet is fixed and a rotating shaft which is rotated by the driving force of the motor are provided in parallel between these supporting members and are rotatably supported by the supporting members.

The winding shaft is always biased by a spiral spring in the direction of winding the curtain sheet.

A pair of wires is attached to the other end of the curtain sheet wound around the winding shaft. These wires are fixed to both ends of the curtain sheet in the vehicle width direction, and are attached to the rotary shaft via a pair of pulleys provided on the upper end side of the rear window glass facing both ends of the curtain sheet in the vehicle width direction. It is fixed to a pair of wire winding pulleys provided. Each wire winding pulley is fixed coaxially with the rotating shaft, and when the motor operates to rotate the rotating shaft, each wire winding pulley rotates.

That is, in this type of vehicle roll curtain device, when the motor is actuated to rotate the rotary shaft, each wire winding pulley is rotated and the wire is wound around the wire winding pulley. Accordingly, the curtain sheet can be pulled out against the biasing force of the spiral spring.

On the other hand, Japanese Patent Laid-Open No. 62-244995 discloses an example of a vehicle roll curtain device having a structure different from that of the above-described vehicle roll curtain device.

That is, in the vehicle roll curtain device disclosed in this publication, a winding device having a winding shaft having one end of the curtain sheet fixed to the lower end side of the rear window glass in the vehicle compartment is arranged. . This winding device is provided with a spiral spring, and the spiral spring constantly biases the winding shaft in the direction in which the curtain sheet is wound.

A holding member, which is long in the vehicle width direction, is attached to the other end of the curtain sheet having one end fixed to the winding shaft. Further, a guide groove that is long in the vehicle width direction is formed in this holding member.

On the other hand, a gear box is arranged between the winding device and the rear window glass. A gear that receives the driving force of the motor to rotate is housed inside the gear box. Further, a pair of connecting rods is movably inserted into the gear box from both ends in the vehicle width direction. A rack is formed at the end of the connecting rod on the gear box side, and the rack is meshed with the gear while facing each other in the vehicle front-rear direction via the gear. The ends of the connecting rods on the opposite side to the gear box are rotatably attached to the base ends of a pair of arms arranged near both ends in the vehicle width direction.

The base ends of these arms are rotatably attached to both ends of the winding device in the vehicle width direction. Also,
These arms are bent at a predetermined angle at the base end,
From this bent portion, it is stretched on the tip side. further,
The tips of these arms are inserted into the guide grooves of the holding member described above, and are slidable along the guide grooves.

That is, in this vehicle roll curtain device, when the motor is operated while the curtain sheet is wound (stored), the gear rotates and the connecting rod is drawn into the gear box. As a result, the base end portion of each arm is pulled by the connecting rod and rotated by a predetermined angle. Here, since the arm is bent at the tip end side of the base end portion, when the arm is turned, the tip end side of each arm is turned above the vehicle and outward in the vehicle width direction. Further, in this state, the tip end of each arm slides in the guide groove of the holding member and pushes the holding member upward in the vehicle. As a result, the curtain sheet can be pulled out against the biasing force of the spiral spring of the winding device.

[0013]

In any of the above-described vehicle roll curtain devices, it is possible to pull out the curtain sheet by operating the motor.
Further, when the motor is operated in the reverse direction, the curtain sheet can be wound (stored) by the urging force of the spiral spring. This allows the curtain seat to be pulled out and wound up even when there is no passenger in the rear seat.

However, in the vehicle roll curtain device disclosed in Japanese Utility Model Laid-Open No. 4-31577, since the curtain sheet is pulled out by the wire, it is necessary to appropriately apply grease or the like to the pulley or the like that supports the wire. There is a problem that the curtain sheet is easily soiled. As a method of solving this, a method of covering the wire with a cover or the like to prevent the curtain sheet from being contaminated can be considered, but in this case, since the number of parts increases and the wire is covered by the cover, There is a problem that maintenance work such as grease application becomes complicated.

On the other hand, in the vehicle roll curtain device disclosed in Japanese Unexamined Patent Publication No. 62-244995,
Since the wire is not used, the above problem does not occur. However, this type of vehicle roll curtain device is a vehicle of a type in which the rear window glass is curved in the vehicle width direction and the head of an occupant of the rear seat is located below the rear window glass (for example, a rear window). When applied to a coupe type automobile having a seat, etc.), the arm interferes with the occupant's head during the operation of the device, which gives the occupant an uncomfortable feeling. As a method for solving such a problem, it is conceivable to attach the vehicle roll curtain device further to the vehicle rear end side, but in this case, the width of the curtain sheet must be narrowed according to the curvature of the rear window glass. However, there is a problem that it cannot reliably shield light.

In consideration of the above facts, an object of the present invention is to obtain a vehicle roll curtain device capable of ensuring smooth operation even when there is an obstacle such as the body of an occupant.

[0017]

According to a first aspect of the present invention, there is provided a vehicular roll curtain device which is installed near a lower end portion of a slanted windshield glass in a passenger compartment so that a curtain sheet in a wound state is directed upward in the vehicle. And a vehicle roll curtain device that shields the windshield glass from light by pulling out the curtain sheet toward the upper part of the vehicle compartment by receiving a driving force, and at the time of pulling out the curtain sheet, along the inclination of the windshield glass. It is characterized by having a curved arm.

In the vehicle roll curtain device having the above structure, when the arm receiving the driving force pulls out the curtain sheet toward the upper side of the vehicle compartment, the arm is curved along the inclination of the windshield glass. Accordingly, for example, when there is an obstacle below the windshield glass, for example, the body of the occupant (particularly, the head of the occupant), the interference of the arm with the obstacle is avoided, and the occupant feels discomfort. The curtain sheet can be pulled out smoothly.

According to a second aspect of the present invention, there is provided the vehicle roll curtain device according to the first aspect, wherein the arm has a lower rigidity from a base end portion toward a tip end portion.

In the vehicle roll curtain device having the above structure, since the rigidity of the arm is lowered from the base end portion to the tip end portion, when the arm pulls out the curtain sheet by receiving the driving force, the arm is pulled out when the curtain sheet is pulled out. An external force applied to the arm causes the arm to bend along the inclination of the windshield glass. The bending allows the arm having a low possibility of interference to have a high rigidity and the arm having a high possibility of interference to have a low rigidity, so that the arm can be driven strongly and can be flexed flexibly. As a result, it is possible not only to avoid interference between the arm and an obstacle below the windshield glass, but also to reliably bend the arm when the curtain sheet is pulled out.

According to a third aspect of the present invention, there is provided a vehicle roll curtain device according to the first or second aspect, wherein the arm is formed by connecting a plurality of plate-shaped arm members having different wall thicknesses. The arm member provided on the distal end side is thinner than the arm member provided on the proximal end side.

In the vehicle roll curtain device having the above-described structure, since the plurality of plate-shaped arm members constituting the arm are thinned in order from the base end portion to the tip end portion, the rigidity of the arm is increased from the base end portion. Lowered towards the tip. With this, when the arm pulls out the curtain sheet by receiving the driving force, the arm is surely curved along the inclination of the windshield glass, and it is possible not only to avoid interference with the obstacle below the arm and the windshield glass, The arm corresponding to the inclination angle of the windshield glass can be easily manufactured.

[0023]

FIG. 1 is a perspective view showing the outer appearance of a vehicle roll curtain device 10 according to an embodiment of the present invention. Further, FIG. 2 is a side view schematically showing a vehicle 12 to which the vehicle roll curtain device 10 is applied.

As shown in these figures, the vehicle roll curtain device 10 is installed inside the vehicle 12 (for example, on the rear package trim of the vehicle 12) near the lower end of the rear window glass 14. In addition, the vehicle roll curtain device 10 includes a case 1 that is generally long in the vehicle width direction.
6 is provided. A winding shaft 20 for winding the curtain sheet 18 is housed inside the case 16. The winding shaft 20 has a generally cylindrical shape that is long in the vehicle width direction. Here, as shown in FIGS. 3 and 4, both ends of the columnar support member 24 are provided on the side wall of the case 16.
It is supported rotatably.

One end of the curtain sheet 18 is fixed to the winding shaft 20, and the curtain sheet 18 can be wound and pulled out by rotating the winding shaft 20 in a predetermined direction.

A spiral spring 22 is housed inside the winding shaft 20. The spiral spring 22 has one end fixed to the winding shaft 20 and the other end fixed to the support member 24, and always biases the winding shaft 20 in the direction of winding the curtain sheet 18.

Actuators 26 and 28 are arranged below both ends of the winding shaft 20 in the vehicle width direction.

Here, since the actuator 26 and the actuator 28 have the same structure except that their structures are symmetrical in the vehicle width direction, the actuator 26 and the actuator 26 have the same structure.
Only the configuration will be described and the description of the actuator 28 will be omitted.

The actuator 26 has a case 30. A motor (not shown) is housed inside the case 30, and an output shaft 32 that rotates by receiving the driving force of the motor is arranged so as to partially project to the outside of the case 16. A cam plate 34 is integrally attached to the outer peripheral surface of the case inner side portion of the output shaft 32.

A pair of limit switches 36, 38 are housed inside the case 30. The limit switch 36 is provided with a metal contact piece 40, and the limit switch 38 is provided with a metal contact piece 42. These limit switches 36, 38
Are arranged so that the contact piece 40 and the contact piece 42 face each other via the output shaft 32. Further, these limit switches 36, 38 are provided with respective contact pieces 40, 42.
Corresponds to the cam plate 34 of the output shaft 32, and when the output shaft 32 rotates by a predetermined angle, the cam plate 3
4 is capable of contacting the contact piece 40 or the contact piece 42. Here, when the cam plate 34 contacts the contact piece 40 or the contact piece 42, the motor stops and the rotation of the output shaft 32 stops.

On the other hand, an arm 44 is arranged outside the case 16. This arm 44 includes a plurality of arm members 4
6, 48, 50, 52. The arm member 46 is formed of a pipe-shaped member, and the base end portion 46A is flattened by being crushed by press working or the like. A base end portion 46A of the arm member 46 is integrally attached to the output shaft 32, and when the output shaft 32 rotates, the arm member 46 rotates. This arm member 4
An arm member 48 having an outer diameter smaller than the inner diameter of the arm member 46 is inserted into the distal end portion 46B of No. 6. Although the arm member 48 is a pipe-shaped member, the arm member 48 is crushed by pressing or the like to have a flat plate shape except the base end portion 48A.
Further, a plurality of through holes 54 are intermittently formed in the base end portion 48A of the arm member 48 along the longitudinal direction. The through hole 54 corresponds to the through hole 56 formed in the tip end portion 46B of the arm member 46. By fixing the through hole 56 and the through hole 54 at a desired position with a bolt 58 in a connected state. The length of the arm 44 can be adjusted.

Further, as shown in FIG. 1, an arm member 50 is fixed to the tip of the arm member 48 by a rivet. This arm member 50 is an arm member 4
The thickness of the plate 8 is thinner than the thickness of the front end side of the arm member 8, and the rigidity of the arm member 48 in the thickness direction is smaller than that of the front end portion of the arm member 48.
Further, an arm member 52 is fixed to the tip of the arm member 50 by a rivet. This arm member 52
Has a plate shape thinner than the thickness of the arm member 50, and has a lower rigidity in the thickness direction than the arm member 50. A guide member 60 is attached to the tip of the arm member 52.

Here, as shown in FIG. 5 and FIG.
The guide member 60 is a tubular member having a rectangular cross section that is long in the vehicle width direction. The guide member 60 is provided with a guide groove 62 that is long in the vehicle width direction. This guide groove 6
A runner 64, which is rotatably attached to the distal end portion of the arm member 52, is inserted in the armature 2, and is movable along the guide groove 62.

Further, end caps 66 are fixed to both ends of the guide member 60 in the vehicle width direction. A guide roller 68 is rotatably attached to the tip of the end cap 66, and a projection 70 is formed at the tip of the end cap 66 so as to face the guide roller 68.

The protrusion 70 is formed on the roof 12A of the vehicle 12.
Corresponding to the rubber catcher 72 provided at the end of the rubber catcher 72, and can be fitted into the recess 72A formed in the rubber catcher 72.

Further, the other end of the curtain sheet 18 wound around the winding shaft 20 is fixed to the guide member 60. That is, the curtain sheet 18 can be pulled out by moving the guide member 60 upward in the vehicle.

Next, the operation of this embodiment will be described. In the vehicle roll curtain device 10, the curtain sheet 18 can be pulled out by operating the motors of the actuators 26 and 28 while the curtain sheet 18 is wound around the winding shaft 20.

That is, when the curtain sheet 18 is wound (stored), the arm 44 is in a sideways state (that is, a state in which it is long in the vehicle width direction) and is attached to the tip of the arm member 52. The runners 64 are close to each other at the center of the guide groove 62 in the longitudinal direction.

When the actuators 26 and 28 are operated in this state, the output shaft 32 rotates and the actuator 26
Also, the arms 44 of the actuator 28 are rotated upward of the vehicle 12 so as to be separated from each other. In this state, the guide members 60 are pushed up above the vehicle 12 while sliding in the guide grooves 62 outward in the vehicle width direction so that the runners 64 are separated from each other. As a result, the curtain sheet 18 is moved toward the winding shaft 20 against the biasing force of the spiral spring 22.
Drawn from.

Then, the guide member 60 is pushed up to a predetermined position, and the guide roller 6 of the end cap 66 is pushed.
When 8 comes into contact with the rear window glass 14, the guide member 68 moves in parallel with the rear window glass 14 while the guide roller 68 rotates along the rear window glass 14. That is, as shown in the schematic view of FIG. 7, the arm 44 has an inclination angle θ ₁ of the rear window glass 14 with respect to the device installation surface A (for example, the rear package trim of the vehicle).
When rotating on a plane inclined by an angle θ ₂ larger than
Until the front end portion of the arm 44 (that is, the guide roller 68 of the guide member 60) contacts the rear window glass 14, the arm 44 does not bend but operates while being inclined at the angle of θ ₂ . When the tip of the arm 44 comes into contact with the rear window glass 14, θ ₂ > θ _1. Therefore, the force F pressing the rear window glass 14 of the arm 44 is in the direction outside the glass surface and with respect to the glass surface. And a component force F _{1 in the} right-angled direction and a component force F ₂ above the glass surface and along the glass surface. Here, this component force F ₂ is applied to the arm 44.
Acts as a force to move the rear window glass 14 along, so that the guide member 68 moves in parallel with the rear window glass 14 while the guide roller 68 rotates.

Further, in this state, the arm 4 of the component force F ₁ is
The reaction force to 4 acts as a force to bend the arm 44. As a result, when the tip of the arm 44 contacts the rear window glass 14 and the arm 44 further presses the rear window glass 14, the arm 44 is bent by the reaction force of the component force F _{1 to} the arm 44. Here, the arm member 4
Since the rigidity from 8 to the arm member 52 is gradually reduced, the arm 44 follows the inclination of the rear window glass 14 so that the portion of the rear seat corresponding to the occupant's head is separated from the occupant's head. To be curved. This allows
When the arm 44 rotates, it is possible to avoid interference with the occupant's head in the rear seat of the arm 44.

Further, when the guide member 60 is pushed up to the vicinity of the roof 12A from this state, the projection 70 of the end cap 66 is recessed 72A of the rubber catcher 72.
And the end cap 66 (guide member 60) is held by the rubber catcher 72. Further, in this state, the cam plate 34 of the output shaft 32 is set so as to contact the contact piece 40 of the limit switch 34, and the contact of the contact piece 40 stops the motor. In this state, the curtain sheet 18 is held in a completely pulled out state, and the front of the rear window glass 14 can be shielded from light.

As described above, in the present vehicle roll curtain device 10, the arm member 48 to the arm member 5 are used.
The rigidity in the thickness direction up to 2 is set to be small in order. For this reason, when the curtain seat 18 is pulled out, the arm 44 follows the inclination of the rear window glass 14, and the portion of the rear seat corresponding to the occupant's head is flexibly curved so as to be separated from the occupant's head. The interference of the seat with the head of the occupant can be avoided, and the curtain seat 18 can be pulled out without giving discomfort to the occupant.

In this embodiment, the arm member 4
The rigidity was changed by sequentially reducing the wall thicknesses of 8, 50 and 52, whereby the arm 44 was curved along the inclination of the rear window glass 14. However, the configuration for bending the arm 44 is not limited to this, and a plurality of arm members forming the arm are provided with a biasing force in a direction opposite to the above-described bending direction (that is, the bending direction along the glass surface). A configuration in which a plurality of arm members 84, 86, 88 having a U-shaped cross section are coupled by a spring 90, such as a configuration in which they are coupled by an urging member that they have Good. In this case, when the guide roller 68 contacts the rear window glass 14 and the reaction force from the rear window glass 14 acts on the arm 82, the arm 82 resists the biasing force of the spring 90 and the rear window glass 14 is inclined. Curved along. Therefore, not only the same effect as the above-described effect can be obtained, but the spring 90 is replaced and the biasing force applied to each arm member 84, 86, 88 is adjusted, so that the arm 82 with a desired curvature can be obtained. Can be curved.

Further, in the present embodiment, the arm 44 is constructed by sequentially connecting (fixing) a plurality of arm members 48, 50, 52 having different wall thicknesses. Alternatively, one thin arm may be applied, or the rigidity of the arm may be gradually reduced from the base end side to the tip end side by heat treatment or the like.

Further, in the present embodiment, the arm 44 is bent by the reaction force from the rear window glass 14 when the guide roller 68 comes into contact with the rear window glass 14, but the arm 44 is bent. The configuration of is not limited to this. For example, the biasing force of the spiral spring 22 of the winding shaft 20 may be set to be high, and the arm 44 may be curved by the tension of the curtain sheet 18 when the curtain sheet 18 is pulled out. Even in this case, the same effects as those described above can be obtained.

Further, in the present embodiment, the arm 44 is directly attached to the output shaft 32 of the actuator 26, 28. However, for example, the driving force of the motor is applied to the arm 44 via the feed screw or the gear. It may be configured such that the arm 44 is rotated by the transmission.

[0048]

As described above, in the vehicle roll curtain device according to the present invention, when the arm receives the driving force and pulls out the curtain sheet, the arm is curved along the inclination of the windshield glass. Therefore, the interference of the arm with the obstacle below the windshield glass can be avoided, and the curtain sheet can be pulled out smoothly. Further, in particular, when the obstacle is the body of the occupant, for example, the head of the occupant, the curtain sheet can be pulled out without giving discomfort to the occupant.

[Brief description of drawings]

FIG. 1 is a perspective view of a vehicle roll curtain device according to an embodiment of the present invention.

FIG. 2 is a side view of a vehicle to which the vehicle roll curtain device according to the embodiment of the present invention is applied.

FIG. 3 is a rear view showing details of the base end side of the vehicle roll curtain device according to the embodiment of the present invention.

FIG. 4 is a side view showing details of the base end side of the vehicle roll curtain device according to the embodiment of the present invention.

FIG. 5 is a plan view showing details of the tip end side of the vehicle roll curtain device according to the embodiment of the present invention.

FIG. 6 is a side view showing details of the tip end side of the vehicle roll curtain device according to the embodiment of the present invention.

FIG. 7 is a schematic diagram corresponding to FIG. 2 showing the direction of force when the arm of the vehicle roll curtain device according to the embodiment of the present invention is in contact with the rear window glass.

FIG. 8 is a perspective view showing a modified example of the vehicle roll curtain device according to the embodiment of the present invention.

[Explanation of symbols]

10 Vehicle Roll Curtain Device 12 Vehicle 14 Rear Wind Glass (Windshield Glass) 18 Curtain Sheet 44 Arm 48 Arm Member 50 Arm Member 52 Arm Member 80 Vehicle Roll Curtain Device 82 Arm 84 Arm Member 86 Arm Member 88 Arm Member

Claims (3)

[Claims] 1. A roll curtain device for a vehicle, which is installed near a lower end of a slanted windshield glass, and which pulls out a curtain sheet in a rolled-up state toward the upper side of the vehicle to shield the windshield glass from light. A roll curtain device for a vehicle, comprising: an arm that bends along the inclination of the windshield glass when the curtain sheet is pulled out by receiving a driving force toward the upper side of the vehicle compartment. 2. The vehicle roll curtain device according to claim 1, wherein the arm has a lower rigidity from a base end portion toward a tip end portion. 3. The arm is configured by connecting a plurality of plate-shaped arm members having different wall thicknesses, and the wall thickness of the arm member provided at the distal end side is greater than that of the arm member provided at the base end side. The thin film is also thin.
Alternatively, the vehicle roll curtain device according to claim 2.