JP3305779B2 - Sunroof opening / closing drive method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving method for opening and closing a sunroof mounted on a vehicle such as a passenger car.

[0002]

2. Description of the Related Art Sunroofs are classified into a hood type using a hood as an opening / closing member and a panel type using a panel. In both types, a cable driving device is used to open and close the opening / closing member. For example, as disclosed in JP-A-64-29592, one end of a cable is connected to an opening / closing member, and the cable is pushed and pulled by a cable driving mechanism fixed to a roof. The cable is usually guided by a cable guide member such as a tube.

In order to make the opening and closing operation of the opening and closing member smooth, the cable guide member is formed as straight as possible so as to minimize the sliding resistance between the cable and the cable guide member. The corners to the sides also have a large curvature so that there is almost no resistance at this corner.

[0004]

In the above prior art, the cable sliding resistance and the closing force (driving force) of the opening / closing member become substantially constant during the entire stroke from the fully open state to the fully closed state. Although the opening and closing operation of members is easy, it is difficult to stop when foreign objects are caught during opening and closing due to the strong closing force of the opening and closing members.For safety measures, overload of motor and change in rotation speed are detected. Therefore, a control method of stopping or reversing the cable drive mechanism must be adopted.

According to the present invention, while the opening / closing member is moved from the open state to a position immediately before the fully closed state, a large sliding resistance is positively applied to the cable so that the closing force at the time of the fully closed state is secured. An object of the present invention is to provide a sunroof opening / closing drive method in which a closing force in the middle is reduced and an opening / closing member can be easily stopped when a foreign object is sandwiched.

[0006]

A specific configuration for solving the problem in the present invention is that one end is connected to the opening / closing member 4 and
The cable 27 whose other end is a free end is connected to the cable guide member 3.
By pushing and pulling while guiding at 5 , the opening / closing member 4
In the opening and closing driving method sunroof moves to open and close the opening of the roof from the open state to the fully closed state A, the cable
Cable guide member 35 for guiding the free end side of
Forming the bent portions 35B and 35C and the linear portion 35A
In the meantime, while the opening / closing member 4 is moved from the open state to just before the fully closed state A , the bent portion 3
5B and 35C, a large sliding resistance is applied, and while the opening / closing member 4 is moved from the position immediately before the fully closed state A to the fully closed state A ,
The free end of the bull 27 is passed through the bent portions 35B and 35C.
The guide is guided by the linear portion 35A having a small sliding resistance .

[0007]

The free end of the cable 27, one end of which is connected to the top (opening / closing member) 4, is guided by a cable guide member 35, and from before (just before) the top 4 enters the fully closed state A, to the fully closed state A. The sliding resistance applied to the cable 27 is extremely small until the pressure is reduced, and the closing force of the top 4 is set to a sufficient magnitude.

On the other hand, during the period from the open state such as the fully open state B to the state before the fully closed state A, the cable 27 is guided through the bending portions 35B and 35C, and the sliding resistance is positively applied. The closing force of the hood 4 is set to a small value.
Are designed to stop or slow down.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 9, reference numeral 1 denotes a hood-type sunroof attached to a middle-high roof 2 such as a passenger car, and a frame 21 is fitted into a substantially rectangular opening formed in the roof 2 in a plan view, and a sealing member. 28, it is fixed to the roof 2.

The frame 21 has a frame shape, the upper part of which forms the external opening 3, the lower outer peripheral part is a rain gutter part 22, and the lower central part has an internal opening 9 having a smaller area than the external opening 3. A rim member 11 formed so as to cover the periphery of the internal opening 9 is fitted. The cable driving mechanism 2 is located behind the internal opening 9 of the frame 21.
3, and a guide rail 24 that is long in the front-rear direction is disposed on the upper surface on the left and right sides. A slider 25 is slidably engaged with the left and right guide rails 24 via a shoe 26 in the front-rear direction, and the distal end of a cable 27 pushed and pulled by a driving device 23 is connected to the slider 25.

A front cover 5 is fixed to the left and right sliders 25, and a front portion of the top 4 is mounted on the front cover 5. The slider 25 is only pushed and pulled back and forth on the guide rail 24 by the cable 27 and does not rotate. Therefore, the front cover 5 is a movable cover, and its front end moves substantially linearly. The hood 4 is formed of a flexible material, and can be freely extended and folded. The outer opening 3 is closed by extension and opened by folding. The rear part of the hood 4 is attached to a rear cover 6, and the rear part of the rear cover 6 is screwed to the roof 2 together with the rear part of the frame 21. The front part of the rear cover 6 is bent forward and downward from the middle, and an inclined front descending part 12 is formed.

Between the front and rear covers 5, 6, three aggregates 7,
8 are arranged. The first and last aggregate is floating aggregate 7
The central aggregate (the rear side of the floating aggregate 7) is the supporting aggregate 8 which does not cause the floating. Two or more sets of the floating aggregate 7 and the supporting aggregate 8 may be provided. Each of the floating aggregates 7 has a pair of left and right brackets 18 which are connected to the respective front sliders 25 or brackets 32 of the supporting aggregate 8 via links 15 and which float via tension springs 16. Biased in the opposite direction. The bracket 32 of the supporting aggregate 8 is slidably engaged with the guide rail 24 via the shoe 33.

Reference numeral 10 denotes a backing cloth for opening and closing the internal opening 9, which has locking portions 36 and 37 on the front and rear edges, has a locking band 38 on the left and right side edges, and sew the cylindrical member 17 on the upper surface halfway. I'm wearing
The cylindrical member 17 is fitted to the aggregates 7 and 8 via a sponge 40, and the lower ends of the brackets 18 and 32 are bent in an L-shape and are engaged with a retaining band 38. Lining cloth 10
Is engaged with the free end of a U-shaped engaging body 41 fixed to the lower surface of the front cover 5 so as to be freely detachable. 42
Is a cushion interposed between the engaging body 41 and the backing cloth 10.

The rear locking portion 37 of the backing cloth 10 is engaged with the rear side of the front lowering portion 12 of the rear cover 6 so as to be detachable. As a result, the backing cloth 10 is stretched between the front and rear covers 5 and 6 substantially in parallel with the hood 4, and an intermediate portion thereof is supported by the aggregates 7 and 8. 5 to 8, at least the front part and the left and right sides of the seal member 28 are fitted to the outer peripheral edge of the frame 21.
, A holding portion 28C sandwiched between the frame 21 and the roof 2 over the entire circumference, a base portion 28D for covering the upper surfaces of the front portion and the left and right side portions of the frame 21, and an integral portion of the base portion 28D on the front portion of the base portion 28D. Bulging portion 28A formed on the base and auxiliary bulging portion 28 integrally formed on the left and right portions of base portion 28D.
E and a lip portion 28B extending outward and upward from the auxiliary bulging portion 28E.

The inside of the swelling portion 28A and the auxiliary swelling portion 28E is a closed air chamber communicating with or independent of each other, and the swelling portion 28A is larger than the auxiliary swelling portion 28E in that the air chamber is enlarged in the front and rear and up and down directions. It has become something. The seal member 28 is a rubber-like elastic material, and the front part, the left and right side parts, and the rear part are separately formed by extrusion, and are vulcanized and bonded in a frame shape.
The bulging portion 28A, the auxiliary bulging portion 28E, and the lip portion 28B are made of sponge, and are relatively hard with the other components of the seal member 28.

The hood 4 has a cushion member 29 attached to the back surface between the front cover 5 and the rear cover 6 and between the cylindrical member 17. The cushion material 29 is made of high-density plastic such as urethane foam and is formed to be lightweight and relatively thick, and to prevent wrinkles while maintaining the elasticity of the top 4. A cut 30 such as a slit or a narrow groove is formed on the front side of the supporting aggregate 8 in the cushion material 29 and is divided into front and rear. When the top 4 is folded by the cut 30 as shown in FIG. The top 4 is not wrinkled. The cut 30 may be plural, and
It is also possible to form it on the rear side of the supporting aggregate 8.

The left and right sides of the hood 4 are folded back and fixed to the back side to form an end bag portion, and both ends of the floating aggregate 7 and the supporting aggregate 8 are inserted into the end bag portion. A tension member 31 formed of a wire, a string, or the like is inserted through a side edge side in the end bag portion. The tension member 31 has front and rear ends connected to the front cover 5 and the rear cover 6, and gives tension in the front and rear and left and right directions when the hood 4 is closed.

A seal auxiliary member 34 is disposed in the front and rear ends of the end bag portion of the top 4. This seal auxiliary material 3
Numeral 4 is formed of a thick and lightweight plastic such as urethane foam, and improves the adhesion between the front and rear sides of the hood 4 and the seal member 28 to prevent noise. In FIGS. 1 to 3, the cable drive mechanism 23 is fixed to the roof 2 below the rear cover 6, and has a motor and a speed reduction mechanism (not shown). Push-pull is possible. One end of the cable 27 is connected to the slider 25 through the guide rail 24.
And the free end 27a side is guided by a cable guide member (tube) 35.

The cable guide member 35 has as few bent portions as possible on the feed side between the cable drive mechanism 23 and the slider 25 so as not to apply resistance to the cable 27. The play side that guides the 27a side forms a straight portion 35A with extremely low resistance, and subsequent bent portions 35B and 35C that actively provide resistance.

Therefore, when the top 4 is closed from the open state such as the fully open state B or the like, before the fully closed state A (for example, between the front cover 5 and the bulging portion 28A on the front side of the seal member 28, the finger is inserted). Position where a small gap is formed so that no air enters.)
Until the cable 27 is inserted through the bent portions 35B and 35C, the cable 27 actively receives a large cable sliding resistance, the closing force of the hood 4 is small, and the front portion of the external opening 3 and the front cover 5 If a foreign object is interposed between the front cover 5 and the front cover 5, it is difficult to move forward, and the front cover 5 stops or slows down.

Before the fully closed state A, the free end 27a of the cable 27 enters the straight portion 35A through the bent portion 35C or passes through the bent portion 35B, and the sliding resistance rapidly decreases, and the closing force of the hood 4 is reduced. As a result, the force for securely closing the top 4 can be obtained. This operation is substantially the same for the left and right cables 27, and the cable drive mechanism 23 is deviated to one side from the left and right center of the roof 2, but the length and curvature of the straight portion 35A and the bent portions 35B and 35C are set to be the same for the left and right. ing. The sliding resistance applied to the cable 27 can be variously set by changing the curvatures of the bent portions 35B and 35C.

FIGS. 10 and 11 are for comparing and explaining the sliding resistance and the closing force of the cable between the embodiment and the prior art, respectively.
3, the cable 27 and the cable guide member 35 (excluding the shape) have the same conditions. As is clear from FIGS. 10 and 11, in the related art (indicated by a dashed line), when the top 4 is closed from the fully open state B, from when the front cover 5 starts to move to the fully closed state A. Although the cable sliding resistance slightly decreases, it is substantially constant, and the shutoff force is constant throughout the entire period.

On the other hand, in the embodiment (shown by a solid line), until the free end 27a of the cable 27 enters the straight portion 35A, the sliding resistance of the cable is about twice as large as in the prior art, and the closing force is 3-4. It has dropped by about a percentage. When the free end 27a enters the straight portion 35A, it is the same as the prior art. The graph shown by the dotted line in FIG. 11 shows a modification of the present invention. In this modification, when a motor having a large torque is used for the cable drive mechanism 23 and the top 4 is closed from the fully open state B. The shut-off force is larger than that of the embodiment but smaller than that of the prior art.
In this case, the closing force is larger than that of the related art from before this time to the fully closed state A, so that the closing can be performed more securely than the related art, and the floating of the hood 4 and the intrusion of water can be prevented.

The present invention is not limited to the above embodiment, but can be variously modified. For example, the sunroof 1 may be attached to the roof 2 with the front and rear reversed, and the rear cover may be used as a movable cover, or both the front and rear covers 5 and 6 may be used as movable covers. However, when the front and rear covers 5 and 6 are used as moving covers, the cable driving mechanism 2 is used.
3 are provided, and the swelling portion 28A of the sealing member 28 is provided.
Are formed both before and after.

Further, in the present invention, the hood type is shown as the sunroof, but a panel type in which one or two or more panels are slid or tilted and slid may be used. Cable guide member 3
A member that comes into contact with the free end 27 a of the cable 27 may be provided in 5.

[0026]

According to the present invention described in detail above , the closing force of the opening / closing member 4 during opening and closing is reduced while securing the closing force at the time of full closing, and the opening / closing member 4 is easily stopped when a foreign object is caught. Alternatively, the speed can be reduced, and the provision of a special foreign matter trapping prevention means can be omitted.

[Brief description of the drawings]

FIG. 1 is a sectional side view showing an embodiment of the present invention.

FIG. 2 is a plan view of the main part.

FIG. 3 is a plan view showing the whole.

FIG. 4 is an overall plan view of the same.

FIG. 5 is a sectional side view of a front portion of a sunroof.

FIG. 6 is a cross-sectional side view when the hood is folded.

FIG. 7 is a sectional view taken along line XX of FIG. 3;

FIG. 8 is a sectional view taken along line YY of FIG. 3;

FIG. 9 is an exploded perspective view of a hood.

FIG. 10 is a graph comparing the sliding resistance of the cable of the embodiment with that of the prior art.

FIG. 11 is a graph comparing the hood cutoff force of the embodiment, the modified example, and the prior art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Top sun roof 2 Roof 3 External opening 4 Top (opening / closing member) 5 Front cover 6 Rear cover 7 Floating aggregate 8 Support aggregate 24 Guide rail 27 Cable 27a Cable free end 35 Tube 35A Straight portion 35B Bent portion 35C Bent portion

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B60J 7/057 B60J 7/02 E05F 11/04

Claims (1)

(57) [Claims] 1. One end is connected to an opening and closing member (4) and the other end is
The cable (27) with the free end as the cable guide member
In the sunroof opening / closing driving method for moving the opening / closing member (4) from the open state to the fully closed state (A) by pushing and pulling while guiding in (35), the cable (27) ) Cable plan to guide the free end side
Bent part (35B, 35C) and straight part in inner member (35)
While min (35A) and formed in advance and, moving closing member (4) from the open state to the front of the fully closed state (A) is, Ke
Bent portion (35B, 35B) on the free end side of the cable (27).
C), a large sliding resistance is applied, and while the opening / closing member (4) is moved from the position before the fully closed state (A) to the fully closed state (A) ,
The free end of the cable (27) is bent at a bent portion (35B, 35B).
C) The linear part with small sliding resistance after passing through (35A)
A sunroof opening / closing drive method characterized in that the guide is provided by a guide .