JPH0710911Y2 - Sunroof slide mechanism - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a sunroof sliding mechanism for an automobile.

(Prior Art) In an automobile in which an opening is provided in the roof and the opening can be opened and closed by a sunroof, the sunroof is lifted up at a position where the roof opening is closed so that the sunroof does not interfere with the vehicle body when sliding. However, various slide mechanisms for sliding backward have been proposed.

The first conventional example shown in FIG. 15 is a fixed arm type in which the upper end portion of the support arm b is fixedly attached to the sunroof a, and the main body portion c is horizontally straight and the front end portion d is downward. A guider f is provided at the lower end of the support arm b so as to be movable in the curved front and rear roof rail e.

A second conventional example shown in FIG. 16 is an inverted T-shaped arm type known from Japanese Patent Laid-Open No. 63-242720, and has a bracket g attached to the sunroof a and an inverted T-shaped support. A front guider i and a rear guider j, which are pivotally attached to the upper end of the arm b and are movable in the roof rail e, are provided on the lower side of the support arm b. According to this conventional example, the arm movement amount Ht in the vertical direction of the center point Q of the lower side (the center point between the two guides i and j) and the support arm b are undulated and rotated around the center point Q. The lift-up amount L can be obtained by the vertical displacement of the pivot point P (the pivot point of the support arm b with respect to the bracket g) thus obtained.

(Problems to be Solved by the Invention) However, in the first conventional example, as shown in FIG. 15, the lift-up amount L of the sunroof a becomes the arm movement amount Hk in the vertical direction as it is. There is also a problem that the sink amount Sk of the front end portion d of the roof rail also becomes large, the ceiling in the passenger compartment becomes low, and the passenger compartment space is narrowed.

In the second conventional example, when the support arm is located in the main body of the roof rail, the line segment connecting the pivot point with respect to the bracket and the center point of the lower portion is substantially vertical, so that the support arm oscillates and pivots at the front end portion. However, there is a problem in that the vertical displacement of the pivot point is small and the contribution to the increase of the lift-up amount is small. If the bending of the front end of the roof rail is increased, the amount of ups and downs of the support arm can be increased, and the amount of displacement can be increased to greatly contribute to the increase in the lift-up amount. The frictional resistance against the child becomes large, which causes a problem that it is difficult to smoothly open and close the sunroof.

Further, in the second conventional example, the front end of the roof rail must be extended to guide and support the front guide as the lower part of the support arm is enlarged in the front-rear direction by the guides at the two front and rear positions. Although the amount of movement of the arm can be reduced by utilizing the tilting of the arm, the amount of depression of the front end portion increases due to the extension, and as a result, there is no great difference from the first conventional example.

In view of the above problems, it is an object of the present invention to provide a sunroof sliding mechanism that can realize an increase in the amount of lift-up of the sunroof without increasing the amount of sinking of the front end of the roof rail.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention pivots the upper part of a support arm to a bracket attached to a sunroof, and the body part is substantially linear in the horizontal direction and has one end part. In a sunroof sliding mechanism in which two front and rear guides movable in a roof rail bent downward are provided in the lower part of the support arm, a pivot point of the support arm with respect to the bracket is a center point between the guides. It is characterized in that it is offset toward the end of the roof rail.

(Operation) In the above configuration, by offsetting the pivot point from the center point as described above, the line segment connecting the pivot point and the center point can be tilted forward toward the end portion of the roof rail that is bent downward in advance. Therefore, it is possible to increase the amount of vertical displacement of the pivot point when the support arm at the end portion is turned up and down. Therefore, the lift-up amount can be increased even if the sinking amount of the one end portion of the roof rail and the bending amount thereof are the same.

Further, since the front and rear positions of the lower side of the support arm with respect to the pivot can be shifted in the opposite direction to the end by the offset, the height of the lower guider with respect to the pivot can be increased when the support arm falls down. The height can be increased, and as shown in FIG. 1, the height of the guide can be increased, so that the sinking amount of one end of the roof rail can be reduced.

This makes it possible to increase the amount of lift-up of the sunroof without increasing the amount of sinking of one end of the roof rail.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 to 14.

As shown in FIG. 2, an opening 2 is provided substantially at the center of the vehicle body roof portion 1 in the front-rear direction so as to wrap around the roof portion 1 toward both sides of the vehicle body. 3 is this opening 2
It is a glass sunroof that opens and closes. A frame-shaped roof housing 4 is attached to the peripheral portion of the opening 2. Both sides of the roof housing 4 are assembled to a roof side rail 5 via a retainer 6 having an inverted L-shaped cross section. The front slide mechanism of the sunroof 3 is previously incorporated in the roof housing 4 to form an assembly.

Rail portions 7 are arranged on both side edges of the roof housing 4. The rail 7 is made of extruded aluminum and has bolts 8
The nut 9 and the side edge portion of the housing 4 fasten the retainer 6 together. The rail portion 7 and the bolt holes of the side edge portions are formed as long holes in the vehicle width direction, and the position of the roof side rail 5 in the vehicle width direction can be adjusted when the housing is assembled.

The rail portion 7 includes a front rail main body portion 11a for guiding and supporting a front arm 10 for supporting the front portion of the sunroof 3, and a drive rail 13 for guiding and supporting a slider 12 for moving the front arm 10 back and forth. And are integrally molded. As shown in FIGS. 2 and 3, the front end portion 11b of the front rail 11, which is bent downward, is a substantially linear member of a rail member having a U-shaped cross section, which is a member different from the rail portion 7. It is formed by smoothly connecting to the portion 11a.

The front arm 10 has a vertically long plate shape as shown in FIGS. 4 to 6, has a bolt hole 14 for mounting the sunroof 3 at the upper end, and has the front rail on the outer surface of the cabin at the lower end. A shoe 15 made of synthetic resin slidable inside 11 is rotatably attached by a pin 28. still,
As shown in FIG. 7, the front arm 10 is attached to the sunroof 3 via a curved holder 16 fastened in the bolt hole 14, and a place where the holder 16 is attached is covered with a holder cover 17. It is being appreciated.

On the other hand, the slider 12 has a substantially rectangular parallelepiped shape and has a guide piece 18 hanging from the upper edge of the inner periphery of the drive rail 13 on the upper surface thereof.
A concave groove 19 into which (see FIG. 7) is fitted is formed.
A groove 21 is formed on the side surface of the slider 12 in the vehicle compartment, into which a guide piece 20 protruding from the lower edge of the inner periphery of the drive rail 13 to the outside of the vehicle compartment is fitted. At the lower end of the slider 12,
A front end portion of a push-pull toothed cable 22 for moving the slider 12 back and forth along the drive rail 13 is connected and fixed. An insertion hole 23 for the toothed cable 22 is integrally formed in a portion of the rail portion 7 below the drive rail 13. The drive source of the toothed cable 22 is a motor 24 (see FIG. 2) installed in the rear portion of the opening 2 of the rail portion 7.

The front arm 10 and the slider 12 are connected by a link 25 in the front-rear direction. The rear end of the link 25 is pivotally supported on the slider 12 by a pin 27 in a state of being sandwiched between the slider 12 and an auxiliary member 26 integrated with the outer surface of the passenger compartment. The front end of the link 25 is the front arm 10
Is pivotally supported by a pin 28 at the lower end of the. The pin 28 also serves as a support for the shoe 15.

In FIG. 7, 29 is a heat insulating cover member that covers the upper surface of the rail portion 7, 30 is a roof side panel, 31 is a positioning clamp attached to the roof side panel 30, and the rail portion 7 is used when the housing is assembled. It is used for positioning the roof housing 4 with respect to the roof side panel 30 in the vehicle width direction by abutting on the outer surface of the vehicle compartment. 32 is the opening 2
Is a weather strip attached to the periphery of the.

Next, regarding the rear slide mechanism of the sunroof 3,
A description will be given with reference to FIGS. 8 and 14.

As shown in FIG. 8, two recesses 33 are formed in the front-rear direction on the rear side of the opening 2 of the roof part 1 in the front-rear direction.
A shear rail (roof rail) 34 having a substantially U-shaped cross section is attached to the. A main body portion 34a of the rear rail 34 has a substantially linear shape, and a front end portion (one end portion) 34b thereof is bent downward. In FIG. 8, reference numeral 44 denotes the recess 33 and the rear rail 34 of the roof portion 1.
It is a garnish that covers the rear end face and smoothly connects the reference surface of the roof portion 1 and the outer surface of the back door (not shown).

Rear arm 35 guided and supported by the rear rail 34
As shown in FIGS. 9 to 12, is attached to a bracket 36 fastened to the rear portion of the sunroof 3 by a pivot 37. The bracket 36 is provided with a bolt hole 38 for fastening. A torsion spring 39 is mounted on the pivot shaft 37, and biases the bracket 36 and the rear arm 35, which extend rearward with respect to the pivot shaft 37, in a direction in which they are separated from each other. A stopper 41 is provided on one side of the rear arm 35 to prevent the bracket 36 and the rear arm 35 from being separated from each other by a predetermined rotation angle or more by contacting an abutting portion 40 provided on one side of the bracket 36. ing. With these contact portions 40 and stoppers 41,
The bracket 36 is prevented from standing up with respect to the rear arm 35 more than necessary and hindering the assembly work of the sunroof 3.

The rear arm 35 is a pivotal support portion 35a that pivotally supports the bracket 36.
And an arm portion 35b. A shoe (guider) 42 fitted in the rear rail 34 is provided on the lower side of the arm portion 35b.
Are attached to the front and back. The shoe 42 is made of synthetic resin and is rotatably attached by a pin 43. An elastic protrusion 42a is formed on a side portion of the shoe 42 so as to elastically contact the side wall surface of the rear rail 34 to regulate the position of the rear arm 35.

As shown in FIG. 10, the rear arm 35 offsets the front and rear position of the pivot 37 (pivot P) from the center point Q between the shoes 42, 42 to the front. Gravity W of sunroof 3
Is added to the bracket 36 as shown by the phantom line in FIG. 10, but since the bracket 36 and the rear arm 35 are pivotally attached and a torsion spring 39 is interposed between them, the gravity W with respect to the rear arm 35. The action can be replaced with a combination of a downward force W acting on the pivot point P and a moment M for rotating the rear arm 35 clockwise in FIG. In response to such force W and moment M, the front shoe 42 is pressed downward and the rear shoe 42 is pressed upward against the rear rail 34 to balance, and the front shoe 42 has an upward reaction force W ₁ by the rear rail 34. And a downward reaction force W ₂ acts on the rear shoe 42.

When the front-rear dimension between the pivot point P and the front shoe 42 is represented by a and the dimension between the shoes 42, 42 is represented by b, the following equation is established.

W + W ₂ = W ₁ ... W ₁ × a = W ₂ (a + b) + M ..., and W ₁ and W ₂ are obtained from the following equation.

It should be noted that the gravity W of the sunroof 3 does not have the torsion spring 39.
Is directly applied to the pivot point P, the reaction forces W ₁ ′ and W ₂ ′ acting on the shoes 42, 42 are Therefore, by comparing these, in the case of this embodiment, each reaction force
W ₁ and W ₂ can be reduced by (M / b) each, and shoe 42 and rear rail are compared to those without torsion spring 39.
It is possible to reduce the frictional resistance between the rear arm 35 and the rear arm 35 and smoothly move the rear arm 35 back and forth. By increasing the moment M, the balance between the reaction forces W ₁ and W ₂ acting on the front and rear shoes 42 can be improved.

The operation of the sunroof slide mechanism configured as described above will be described.

When the opening 2 of the vehicle body roof 1 is closed by the sunroof 3 as shown by the solid line in FIG. 14, the front arm 10 of the sunroof 3 is in the position indicated by A in FIG. The shoe 15 of the front arm 10 is the front end 11 of the front rail 11.
It is at the lowest position of b, lower than the slider 12 and in front of it. At this time, slide the front arm 10
The link 25 connecting 12 and 12 is inclined (phantom line in FIG. 3).

When the toothed cable 22 is driven rearward by the motor 24, the slider 12 moves rearward in the drive rail 13 and pulls the front arm 10 rearward via the link 25. The front arm 10 can be lifted up by sliding the sunroof 3 rearward by moving to the position B shown by the solid line in FIG. 3 as the shoe 15 is pulled up along the slope of the front end portion 11b.

At this time, the slider 12 is moved substantially linearly rearward by the drive rail 13 and the insertion path of the toothed cable 22 is also maintained in a substantially linear state, so that a large resistance due to the bending of the toothed cable 22 occurs. Absent. Therefore, the front portion of the sunroof 3 can be smoothly lifted up without increasing the output of the motor 24.

On the other hand, in the rear portion of the sunroof 3, the rear arm 35 is in the position indicated by A in FIG. 13 when the opening 2 is closed. At this time, the shoes 42, 42 of the rear arm 35 are located inside the inclined front end portion 34b of the rear rail 34, and the rear arm 35 is lying forward.

From this state, when the rear arm 35 moves rearward to the position B shown by the solid line in FIG. 13 according to the rearward sliding of the sunroof 3, the shoes 42, 42 on the front and rear of the rear arm 35 are moved to the rear rail 34.
In response to being pulled up along the front end portion 34b of the rear arm 35, the rear arm 35 moves upward and gradually stands up from the lying posture to lift up the rear portion of the sunroof 3.

At this time, as shown in FIG. 1, the lift-up amount L of the sunroof 3 is equal to the arm movement amount H in the vertical direction of the center point Q between the shoes 42, 42 and the pivot point P of the support arm 35 standing up. Although it is a value obtained by adding the displacement amount in the vertical direction, as described in the section of action, the arm movement amount H in the vertical direction can be made smaller than that in the first conventional example (see FIG. 15), and Compared to the second conventional example (see FIG. 16), the displacement amount of the pivot point P can be effectively taken out with respect to the predetermined standing rotation angle of the rear arm 35, so that the sinking amount S of the rear rail front end portion 34b is suppressed to be small. Thus, the lift-up amount L of the sunroof 3 can be increased.

In this way, the sunroof 3 is lifted up at the front portion and the rear portion, and then slides backward to the position shown by the phantom line in FIG. 14 in accordance with the rearward movement of the slider 12 at the front portion, and the roof opening portion. 2 can be opened.

Next, the operation of closing the roof opening 2 will be described.

When the toothed cable 22 is reversely driven forward by the motor 24, the front arm 10 moves forward along the main body portion 11a of the front rail 11 to slide the sunroof 3 forward. The rear arm 35 follows the main body 34a of the rear rail 34.

When the shoe 15 of the front arm 10 enters the front end portion 11a of the front rail 11, as the front arm 10 is pushed forward by the slider 12 via the link 25, the shoe 15 of the front arm 10 is It is pushed down by receiving a component force in a diagonally downward direction along the front end portion 11a. Therefore the sunroof 3
Is pressed against the weather strip 32 by the above-mentioned component force, so that the roof opening 2 can be reliably closed and closed.

On the other hand, in the rear portion of the sunroof 3, when the rear arm 35 moves forward along the main body portion 34a of the rear rail 34 and enters the front end portion 34b, the rear arm 35 moves downward and the front and rear shoes are attached.
42, 42 can be laid down forward and the pivot 37 can be pulled down to reliably close the rear portion of the sunroof 3.

The present invention can be constructed in various modes other than the above-mentioned embodiments.

For example, in the above embodiment, the guide is composed of shoes, but the guide can be composed of rollers or the like.

(Effects of the Invention) Since the present invention has the above-mentioned configuration and operation, the lift up amount of the sunroof can be increased without increasing the sinking amount of the front end portion of the roof rail, and as a result, the ceiling of the passenger compartment can be set high. It is possible to expand the passenger compartment space.

[Brief description of drawings]

FIG. 1 is a side view showing an outline of an embodiment of the present invention, FIG. 2 is an exploded perspective view showing the entire structure, FIG. 3 is a side view of a front slide mechanism, and FIGS. 4 to 6 are the front slides. FIG. 4 is a front view thereof, FIG. 5 is a plan view thereof, FIG. 6 is a right side view thereof, and FIG. 7 is a VI of FIG.
I-VII cross-sectional view, FIG. 8 is an exploded perspective view showing an arrangement state of a roof rail at a rear portion of an opening of a roof part, and FIGS. 9 to 12 are main parts of a sunroof sliding mechanism in the present embodiment. , FIG. 9 is its perspective view, FIG. 10 is its front view, FIG. 11 is its plan view, and FIG. 12 is its right side view,
FIG. 13 is a side view of the slide mechanism, FIG. 14 is a perspective view showing the opening / closing operation of the sunroof, FIGS. 15 and 16 show the conventional rear slide mechanism, and FIG. 15 is the fixing of the first conventional example. FIG. 16 is an operation explanatory view of the arm type, and FIG. 16 is an operation explanatory view of the inverted T-shaped arm type of the second conventional example. 3 …… Sunroof 34 …… Roof rail 34a …… Main body 34b …… One end 35 …… Support arm 36 …… Bracket 42 …… Guider P …… Pivot point Q …… Center point

Claims (1)

[Scope of utility model registration request] 1. A front and rear two brackets, each of which has a support arm pivotally attached to a bracket attached to a sunroof, and is movable in a roof rail whose main body is substantially linear in a horizontal direction and whose one end is bent downward. In a sunroof sliding mechanism in which a guide is provided at a lower portion of the support arm, a pivotal fulcrum of the support arm with respect to the bracket is offset toward the end side of the roof rail with respect to a center point between the guides. A sliding mechanism for the sunroof.