JP2522435Y2 - Car sunroof structure - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sunroof structure for an automobile, and more particularly to a drive link mechanism for operating a sunroof lid.

2. Description of the Related Art The sunroof lid of an automobile is slidable in the front-rear direction between a lid closing position and a storage position behind the roof, and the rear end of the sunroof lid can be tilted up at the lid closing position. I have. The tilting of the sunroof lid is performed by a drive link mechanism. As the drive link mechanism, for example, as shown in the Honda Legend Service Manual Structure Edition issued by Honda Motor Co., Ltd. in January 1985, a guide rail is provided. 2. Description of the Related Art There is known a device provided with a tilt mechanism including a guide slidably engaged and a link connected across the guide and a rear portion of a sunroof lid. In this tilt mechanism, a guide is provided with a slide slit parallel to a guide rail for guiding the link connecting pin, and a tilt slide slit for engaging a guide pin provided on the link is provided above the slide slit, By moving the guide back and forth, the connection pin and the guide pin are slid in the corresponding slide slit and tilt slide slit, respectively, to tilt the sunroof lid.

Problems to be Solved by the Invention Since the slide slit and the tilt slide slit are formed in multiple stages in the guide, the height of the guide becomes large, and the so-called unit height extending from the sunroof lid to the guide rail is extended. And the head clearance of the occupant is reduced accordingly.

Therefore, as in the invention described in JP-A-61-125918, a bracket fixed to the lower surface of the sunroof,
A guide rail provided on both sides of the roof opening, a guide slidably provided on the guide rail, and a link rotatably connected between the bracket and the guide; By driving in the front-rear direction, the link is raised and lowered while rolling a predetermined roller of the link on a cam surface provided on the outer periphery of the guide and a slit provided therein, thereby opening and closing the sun roof lid with respect to the roof opening. Something to do is also provided.

However, in this conventional example, the height between the sunroof lid and the guide can be reduced by offset arrangement of the cam surface and the internal slit provided on the outer periphery of the guide. The formed slits are adapted to both slide and undulate the link in the front-rear direction via each roller. Therefore, the slit is formed in an extremely complicated structure having a straight portion and a curved portion. As a result, for example, when changing the undulation timing of the link, the entire slit must be reworked, which makes the forming process complicated and increases the cost.

Means for Solving the Problems The present invention was devised in view of the above-mentioned conventional problems, and a guide rail is provided along both side edges of a roof opening, and the roof opening is opened and closed. In a sunroof structure in which the sunroof lid is slidably disposed on the guide rail via a link mechanism having a tilt mechanism, the front end of the sunroof lid is rotatably supported when the sunroof lid is tilted up. A link mechanism for supporting the rear end of the sunroof lid, the link mechanism being disposed behind the sunroof lid and being driven by a driving mechanism to lift a rear end of the sunroof lid; and a guide engaged with the guide rail; And a link straddling the lid, and the link includes a pin having a pivot at the center of rotation of the link. And a sliding contact portion for slidingly contacting an outwardly facing cam surface formed on the guide at the rear side, and a pivoting portion for providing a pivotal support portion with the sunroof lid at the front side from the rotation center position. A line connecting the center of rotation of the link and the pivotal support and the sliding contact portion is formed in an upwardly concave substantially rectangular shape, and the center of rotation of the link is slidable by a slide means for a predetermined distance in parallel with the guide rail. It is characterized in that the center of rotation of the link and the cam surface are configured to be relatively close to and separated from each other when the link mechanism is driven.

Action By moving the guide forward along the guide rail, the center of rotation of the link is moved rearward by the slide means, and the sliding contact portion at the rear end is lowered along the cam surface of the guide. As a result, the pivot portion of the link rises to tilt up the sunroof lid.

Further, since the cam surface of the guide is formed separately from the slide means at the center of link rotation, the undulating timing of the link can be dealt with only by changing the shape of the cam surface without affecting the slide means.

If an external force is applied upward or downward to the rear end of the sunroof lid at the time of tilting up, the movement of the link center of rotation is restricted by the sliding means to the rear and the sliding movement by the sliding part is restricted to the forward movement. Since it is reliably performed, the backlash of the sunroof lid is prevented, and stable support is always obtained.

An embodiment of the present invention will be described below in detail with reference to the drawings. First
8, reference numeral 1 denotes a roof panel in which a roof opening 2 is formed.
The lower edge is combined with a rainfall 3 having a plurality of brackets 4 for connecting a guide rail 6 described later and reinforced. In this embodiment, the bracket 4 is bent inward so that the bracket 4 does not interfere with the roof side rail 5 when the roof panel 1 is dropped onto the roof side rail 5 and joined. Accordingly, the size of the roof opening 2 in the vehicle width direction is enlarged, and the guide rail 6 is arranged as close to the roof side rail 5 as possible, thereby increasing the head clearance of the occupant. The guide rail 6 has a mounting sheet portion 7 formed on an outer edge thereof, and a rising wall 8 is formed stepwise following the mounting sheet portion 7, and the rising wall 8 is disposed outside the rainfose 3. By fixing the mounting sheet portion 7 to the lower surface of the bracket 4 with a screw 10, a drip channel 9 is formed between the rising wall 8 and a portion of the outside of the rainforest 3 that is not exposed from the outside. Is being improved. A bracket 11 protrudes from a lower portion of the rising wall 8. A bolt / nut 12 is attached to the roof side rail 5 through a body-side bracket 13 which is connected to the bracket 11 with a bolt / nut 12.
14 so as to substantially directly support the guide rail 6 on the roof side rail 5, and
The load of the sunroof unit including the drive link mechanism 20 and the like is applied to the roof side rail 5 so that the mounting rigidity can be increased.

In the present embodiment, the sunroof lid 15 includes a transparent or translucent central panel 16 and a peripheral panel 17 made of a hard thin plate such as a metal plate. The peripheral panel 17 has a horizontal portion 18a parallel to the guide rail 6 at a portion corresponding to the guide rail 6 on the back surface thereof.
The inner panel 18 having an overhang portion 18b extending inward from the inner peripheral edge of the inner panel 18 is joined,
A retainer 19 having an inner peripheral edge fixed to an outer peripheral edge of the central panel 16.
At the same time, the edge of the overhang portion 18b of the inner panel 18 is elastically contacted with the back surface of the central panel 16,
The central panel 16 and the peripheral panel 17 are integrally connected. A space formed in the back of both sides of the peripheral panel 18 is effectively used, and a link mechanism is provided in this space.
Attach 20 and guide rail 6 from sunroof lid 15
The vertical dimension between them is reduced as much as possible.

The link mechanism 20 is a front guide which is fixedly mounted on a rear guide 22 and a front sub-guide 23 fixed on a rear guide shoe 21 engaged with the guide rail 6 and a slide means fixed on a front guide shoe 24 engaged with the guide rail 6. Guide 25
And a front link 26, a rear link 27, and the like. The front link 26 has an intermediate portion, which is the center of rotation, connected to a front guide 25 with a pin 28, and a front end formed on a horizontal portion 18a
A pin 31 serving as a pivot is connected to the front end of a link bracket 30 which is connected to a bolt / nut 29. At the rear end of the front link 26, a guide pin 32 as a sliding contact portion is provided, and the guide pin 32 is engaged with a slide slit 23a as a cam surface formed on the front sub-guide 23. The front side of the slide slit 23a is formed obliquely upward and the rear side is formed obliquely downward at a small angle. The rear link 27 has a front end connected to a rear end of the link bracket 30 by a pin 33 serving as a pivotal support, and a rotation center near the rear end connected to a pin 34 by a rear guide 22. 27 and rear guide 22
Together, the tilt mechanism 35 is constituted. In the center of the rear guide 22, a slide slit 36, which is a slide means with which the pin 34 at the rear of the link 27 is engaged, is formed in a straight line parallel to the guide rail 6, and the outer edge of the rear guide 22 has A cam portion 37 is formed offset from the slide slit 36 in the front-rear direction. The cam portion 37 includes a front cam groove 37a and a rear cam surface 37b. Cam groove
As for 37a, the front half is inclined and formed diagonally downward,
The rear half is formed substantially horizontally and the terminal is opened upward. The cam surface 37b has a horizontal surface formed at the center thereof, the front side is formed obliquely upward, and the rear side is formed by dropping downward at the corner slope. The rear link 27 is formed by bending upward the portion after the connecting pin 34 is provided, and a rear guide pin 38, which is a sliding contact portion that is in sliding contact with the cam surface 37b, is provided at a terminal portion thereof.
A front guide pin 39 that engages with the cam groove 37a is provided at an intermediate position between the connecting pins 33 and 34, at a position offset below a line connecting the connecting pins 33 and 34.

An arm portion 40 extends from the front end of the link bracket 30, and a guide pin 41 serving as a support portion provided on the arm portion 40 is engaged with one rail groove 6 a of the guide rail 6. This is the front end of the rail groove 6a Yes forms a rising groove 6a _1, the point of engagement with the upper stop end and the guide pin 41 of the rising grooves 6a ₁ is are set to be tilt actuation pivot point. The drive mechanism for driving the rear guide shoe 21 is configured as follows,
Is connected to a gold wire 42 driven by a motor and a speed reducer (not shown) so that the rear guide 22 and the front sub-guide 23 slide forward and backward integrally by pushing and pulling the gold wire 42. Has become. The front guide shoe 24 of the front guide 25 and the rear drain 43
Is connected to the rear guide shoe 21
The front guide 25 and the rear drain 43 are integrally slid in the front-rear direction. In FIGS. 4 and 5, 46 and 47 are front and rear traversers connected to the front and rear ends of the left and right guide rails 6 via corner pieces 48, and 49 is provided between the left and right guide rails 6 near the rear traverser 47. The reinforcing traverser, 50, has its lower edge connected to the front traverser 46 by a hinge member 51,
The link 52a is pressed and released at the front edge of the sunroof lid 15 by a deflector whose both side edges are supported by a link mechanism 52 fixed on the front ends of the left and right guide rails 6, so that the sunroof lid 15 is released. With the opening and closing movements of the device, it protrudes from the opening 2. Reference numeral 53 denotes a shade that slides in the front-rear direction along the left and right guide rails 6 below the sunroof lid 15.

According to the structure of the embodiment described above, the sun roof lid 15 is closed from the state shown in FIG.
When the rear guide shoe 21 is pushed forward, the guide pin 32 of the front link 26 moves to the rear end of the slide slit 23a of the front sub-guide 23, while the connecting pin 34 of the rear link 27 The front guide pin 39 moves horizontally rearward and upward in the cam groove 37a, and the rear guide pin 38 moves rearward through the corner slope of the cam surface 37b. As a result, the front guide pin 39 separates from the cam groove 37a, and the rear guide pin 38 drops into engagement with the rear edge step of the cam surface 37b. Thus, the rear link 27 stands up with the connecting pin 34 as a fulcrum, and the sunroof lid 15 tilts up with the guide pin 41 of the arm section 40 as a fulcrum as shown in FIG.

Contrary to the above, when the gold wire 42 is pulled from the closed state of the sunroof lid 15 shown in FIG. 1, the rear guide shoe 21 retreats, and the guide pin 32 of the front link 26 slides the slide slit 23a of the front sub-guide 23. Slides obliquely upward in the front side of the
The front guide pin 39 slides obliquely downward in the front half of the cam groove 37a, and the rear guide pin 38
37b Sliding and moving diagonally upward along the front slope. As a result, as shown in FIG. 3, the sunroof lid 15 is once lowered from the closed position, and the guide pin 41 of the arm section 40 is repositioned in the rail groove 6a by further pulling the Golde wire 42, so that the storage section is retracted. It is slid into 54. At this time, the rear edge flange of the peripheral panel 17 of the sunroof lid 15 enters the rear drain 43 by lowering the sunroof lid 15 and wraps (see FIG. 7). And moved to the storage unit 54 side together with the sunroof lid 15, and the roof opening 2
Is released.

Here, as described above, the rear guide 22 constituting the tilt mechanism 35 is formed by offsetting the cam groove 37a and the cam surface 37b in the front and rear direction with the slide slit 36 on the outer edge of the rear guide 22 to minimize the height of the rear guide 22. The height can be set low, and the unit height from the sunroof lid 15 to the guide rail 6 can be reduced. In particular, if the space below the peripheral panel 17 of the sunroof lid 15 is effectively used and the drive link mechanism 20 is disposed in this space as in the present embodiment, the drive link mechanism 20 is disposed in the space. Since the height dimension can be reduced by the amount of entry, the overall height can be lowered to the position where the slide slit 36, the cam groove 37a, and the cam surface 37b of the rear guide 22 are formed. The size can be reduced, and the head clearance of the occupant can be increased.

In this embodiment, the sunroof lid 15 is supported by the front and rear guides 24, 23, 22 and the two front and rear links 26, 27, so that the opening and closing operation of the sunroof lid 15 can be stabilized. That is, the undulating slide slit 23a of the front sub-guide 23 and the undulating cam surface 37b of the rear guide 22
The front guide 25 and the rear guide which are sliding means
Since the slide means is formed separately from the slide slits 22, the structure of the slide means can be simplified, and when the undulating timing is changed, the shapes of the slide slit 23a and the cam surface 37b need only be changed. Therefore, the degree of freedom in design is improved, and the forming process is facilitated.

As described above, according to the present invention, the cam surface provided on the guide constituting the tilt mechanism is formed so as to be offset in the front-rear direction with the slide means, and the sliding portion of the link is slid on the cam surface. The height of the guide can be set as low as possible because the link can be raised and lowered to engage, so that the vertical dimension of the unit from the sunroof lid to the guide rail is reduced, and the occupant's head clearance is reduced. Can be expanded.

Moreover, since the link cam surface for raising and lowering the link and the slide means for rotating the center of rotation of the link can be formed separately, when the timing of raising and lowering the link is changed, the structure of the slide means of the guide is not changed. It is only necessary to form only the cam surface. Therefore, the degree of freedom in design is improved, and the molding work is facilitated, and the cost can be reduced.

Further, since the structure of the slide means can be simplified, the molding process is also easy in this respect.

Furthermore, when an upward or downward external force acts on the rear end of the sunroof lid during tilt-up, the movement of the link center of rotation is restricted by the sliding means to the rear and the sliding contact part is restricted to the forward movement. In this way, the sunroof lid is prevented from rattling, and stable support can be obtained at all times.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along the line II in FIG. 8 showing an embodiment of the present invention, FIG. 2.3 is an operation explanatory view of the embodiment, FIG. 4 is an exploded perspective view of the embodiment, and FIG. Exploded perspective views of the drive link mechanism and the guide rail. FIGS. 6 and 7 show the VI-VI line and VII-VII in FIG.
FIG. 8 is a cross-sectional view taken along a line, and FIG. 8 is a plan view of the automobile showing an arrangement state of the sunroof lid. DESCRIPTION OF SYMBOLS 1 ... Roof panel, 2 ... Roof opening part, 6 ... Guide rail, 15 ... Sunroof lid, 20 ... Link mechanism, 22 ... Rear guide, 23 ... Front sub guide, 23
a ... slide slit (cam surface), 25 ... front guide (slide means), 26 ... front link, 27 ... rear link, 31, 33 ... pin (pivot), 28, 34 ... connection Pin (rotation center), 32, 38 …… Guide pin (sliding part), 35…
... Tilt mechanism, 36 ... Slide slit (slide means), 37b ... Cam surface, 41 ... Guide pin (support).

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Tsuyoshi Sato 2-15-6 Omori Minami, Ota-ku, Tokyo Inside the Tokyo office of Jonan Seisakusho Co., Ltd. (72) Inventor Hiroshi Imai 2-15- Omori-minami, Ota-ku, Tokyo 6. Jonan Seisakusho Tokyo Office (56) References JP-A-60-104418 (JP, A) JP-A-61-125918 (JP, A) JP-A-2-208122 (JP, A)

Claims (1)

(57) [Scope of request for utility model registration] A guide rail is provided along both side edges of a roof opening, and a sunroof lid for opening and closing the roof opening is slidable via a link mechanism having a tilt mechanism on the guide rail. A support portion for rotatably supporting a front end portion of the sunroof lid when the sunroof lid is tilted up, the support portion being disposed at a rear side of the sunroof lid and being driven by a driving mechanism. The link mechanism that lifts the rear end of the sunroof lid includes a guide that is engaged with the guide rail, and a link that is connected across the guide and the sunroof lid. A pin having a pivot at the center of rotation is connected to the guide, and the sample A pivot portion is provided for the lid, and a sliding portion is provided on the rear side for sliding contact with an outwardly facing cam surface formed on the guide, and a line connecting the rotation center of these links to the pivot portion and the sliding portion is provided. The link rotation center is formed so as to be slidable in parallel with the guide rail by a predetermined distance by a sliding means, and the rotation center of the link and the cam surface are formed in an upwardly concave substantially rectangular shape. A sunroof structure for an automobile, wherein the sunroof structure is configured so that the link mechanism can be relatively moved closer and further away when the link mechanism is driven.