DE10134591A1 - Boot lid fastened to motor vehicle body via hinge arm has inclined guide track sloping towards hinge arm pivot point, top increase spring action - Google Patents

Abstract

The boot lid (1) is pivoted upwards by a spring element, mounted with pre-tension on the vehicle body. An inclined guide track (6) slopes towards the pivot axis (d) of the hinge arm (2), and carries a height-adjustable deflector unit of chain pulley (7) and roller, which is located on the boot lid-sided end section of the guide track when the spring (11) is under strong pre-tension. A pivoted connection element or chain (9) is fastened pivoted to the hinge arm-sided connection point (10) of the hinge arm, passes over the deflector unit, and is indirect connection with a body-mounted component (12). The guide track and/or a guide part are coated with e.g. Teflon .

Description

The invention relates to a hinged hood hinged to at least one hinge arm on a vehicle body of the type mentioned in the preamble of claim 1 and resulting from DE 44 43 813 C1 or DE 14 30 263 ( FIG. 4).

From these two publications it is known to attach the hinge arm to the Luggage compartment lid at a radial distance from the pivot axis of the Hinge arm to link a tension spring that runs in the vehicle longitudinal direction and with its opposite end section with a prestress on one vehicle body-fixed part is attached. The effect of Tension spring is the weight of the luggage compartment lid when it is swung up balanced, so that the manual effort is slightly less. However, after the vehicle body-side attachment point of the tension spring is fixed, is the one available for swinging up the luggage compartment lid The spring force of the tension spring is always the same.

The object of the invention is therefore for a hinged hood in the preamble of claim 1 type to create a device through which Effect of the tension spring to swing up the hinged hood can be increased can.

To achieve the object are the features set out in claim 1 intended.

Through the guide track provided according to the invention, which is on the vehicle body is attached and at a distance from the pivot axis of the hinge arm lies and runs obliquely to the pivot axis, can advantageously linear tension of the tension spring in the closing area of the hinged hood be significantly increased. This means that the foldable is swiveled up Hood - especially a luggage compartment lid - a very good from its closed position high lifting force generated by spring force available, so that the foldable Hood swung up with comparatively less manual effort can be. Because of the sloping course of the guideway over which one with the hinge arm and the tension spring related deflecting element, such as Sprocket, roller or the like is shifted in height, the tension spring is like preloaded higher linearly via a lever arm. Furthermore, since the invention Swiveling device made of a few, easily manufactured individual parts, namely mainly from a guideway, a deflection element and one Connection part between the hinge arm and tension spring, it is very Can be manufactured cost-effectively and is hardly susceptible to faults during operation. If necessary, the pivoting device according to the invention can also be retrofitted, which also requires little installation space.

According to the features of claim 2, the inclination of the Guideway, i.e. its angle of inclination with respect to a vehicle vertical axis, can be changed so that the tension of the tension spring is optimal Coordination of the manual actuation forces to be applied Swiveling the hinged hood can be provided. The Guideway also a rectilinear, concave, convex or undulating Have course (features of claim 3).

The guideway advantageously has a U-shaped or rectangular cross-sectional profile, the on the guideway Deflecting element can be shifted in height by sliding or rolling. Here is a sliding Deflection element designed as a segment-shaped, so skid-like sliding part, wherein the guideway and / or the sliding part with a sliding coating like Teflon or the like is provided (features of claims 4 and 5).

Conveniently, however, serves as a deflecting element via a roller Wire rope or the like is guided, which at an end portion on the hinge arm articulated and at its opposite end section with the tension spring connected is. This is at its opposite end section Vehicle body attached. A deflection element consisting of a roller has an optimal efficiency and can be manufactured very inexpensively (Features of claim 6).

In addition, the deflecting element can also consist of a sprocket is in gear-like engagement with the guideway. For this you can in the Guideway several, equally spaced from each other Provided recesses or a rack on the track be attached. The sprocket can expediently have a flexible shaft or the like can be rotated by a motor. in this connection runs over the sprocket a chain that directly or via an intermediate part on Hinge arm is articulated and with its opposite end section with the Tension spring is connected. So that the luggage compartment lid or the like over the chain can also be closed is between the area of the Hinge arm and the sprocket provided a telescopic guide. By the Motorized rotary drive of the sprocket can be a luggage compartment lid or The like swung up and down by motor via the chain wheel drive become. This can also be done by unlocking the lock Luggage compartment lid are controlled (features of claim 7).

A further embodiment of the invention is that at the bottom End section of the guideway a tension spring is fixed, with its the opposite end section engages with a preload on a bearing pin, on which a roller that can be displaced on the guideway is rotatably mounted. The tension spring is strongly pre-tensioned in the closed position of the luggage compartment lid, so that the tension spring swings up the luggage compartment lid relax and can swing it up with the help of power. It runs between the hinge arm and the roller and between this and one vehicle body-fixed part of a connecting element, each of a Telescopic guide is surrounded, so that in this embodiment the Luggage compartment lid can be opened and closed (features of claim 8).

So that the connecting element such as chain, wire rope or the like is not from the Roller or the sprocket when pivoting the luggage compartment lid can slide, the deflecting element is expediently from a protective cap surrounded (feature of claim 9).

Finally, at least one is out in the area of the deflecting element rubber-elastic material or a mechanical spring Damping element is provided, by which when pivoting the Luggage compartment lid vibration vibrations are dampened (Feature of claim 10).

In the drawing, two embodiments of the invention are shown, which in The following are explained. It shows:

Fig. 1 shows a luggage compartment lid in the closed position, which is pivotable about an inclined guide path extending through a provided on this sprocket,

Fig boot lid shown in FIG. 1. 2 in high pivot position,

Fig. 3 is a boot lid in the closed position, wherein the guide track is provided with a movable roller by a tension spring,

Fig. 4 shows the luggage compartment lid shown in Fig. 3 in the up position.

The luggage compartment lid 1 shown in FIGS. 1 and 2 is provided with two hinge arms 2 which are spaced apart from one another and which are articulated at their end section to a horizontal bearing bolt 3 which extends in a vehicle transverse plane. Around this is the luggage compartment lid 1 covering the luggage compartment h of a passenger car in the directions of the double arrow c . FIG. 2 shows the pivoting position b. The luggage compartment lid 1 is shifted into this by the force-supporting effect of a pivoting device 5 . This is provided at least on one of the hinge arms 2 - or also on both hinge arms 2 .

As can be seen in FIGS. 1 and 2, the pivoting device 5 has a guide track 6 which is inclined towards the pivot axis d of the hinge arm 2 and thereby inclined by an angle α with respect to a vehicle vertical axis k and which is aligned with a in the directions of the double arrow e is provided vertically displaceable deflection element, which consists of a sprocket 7 in the illustrated embodiment. This is in gear-like engagement with a number of recesses 8 which are provided at a distance from one another and are arranged in the base 6 'of the guide track 6 . Instead of the recesses 8 , a rack can also be attached to the base 6 'of the guideway 6 . A chain 9 runs over the sprocket 7 , which is articulated at one end section at an articulation point 10 of the hinge arm 2 - which lies at a radial distance f from its pivot axis d and thus forms a lever arm, while the opposite end section of the chain 9 is also articulated the end portion of a tension spring 11 is articulated. The tension spring 11 is in turn suspended on a part 12 which is fixed to the vehicle body in the area of the luggage compartment h. Furthermore, the sprocket 7 rotatably mounted on the bearing pin 7 'is partially surrounded by a protective cap 14 , to the extension 14 ' of which a telescopic guide 15 surrounding the chain 9 is connected, which extends over a larger longitudinal section to the articulation point 10 of the hinge arm 2 .

In Fig. 1 it can be seen that in the closed position a of the luggage compartment lid 1 , the sprocket 7 is located on the end portion of the guideway 6 facing the luggage compartment lid 1 , the tension spring 11 being very strongly pre-tensioned. This high bias of the tension spring 11 ensures that after unlocking the lock of the luggage compartment lid 1 and pivoting it manually in the direction of the arrow c ', in addition to the manual effort, this is mainly due to the action of the strongly pre-tensioned and now relaxing tension spring 11 up to the in Fig. 2 shown pivoting position b is pivoted, wherein the sprocket 7 is shifted downward in the direction of arrow e '. Due to the effect of the tension spring 11 relaxing, the manual effort to be exerted when the luggage compartment lid 1 is swung up is relatively low. However, there is also the possibility that the sprocket 7 is driven in rotation by a motor drive (not shown) via a flexible shaft or the like after unlocking the lock of the luggage compartment lid 1, thereby displacing the sprocket 7 in the direction of the arrow e ', so that the luggage compartment lid 1 is driven by force is pivoted into the swivel position b.

The guideway 6 is pivotally attached to a part 12 fixed to the vehicle body and can be clamped in the respective inclined position, the inclination angle α of the guideway 6 being changeable with respect to a vertical vehicle axis k; this allows the bias of the tension spring 11 to be changed. Furthermore, the guideway 6 has a U-shaped cross-sectional profile, it also being possible for top-facing, mutually facing guide edges to be provided on the side legs. In this case, along with the guide track 6, in addition to the mentioned sprocket 7 and a roller 17 explained below, a skid-shaped sliding part (not shown) can also be provided, but the guide track 6 and / or the sliding part is provided with a sliding layer made of Teflon or the like. Finally, the bottom 6 ′ of the guideway 6 interacting with the chain wheel 7 can also run concave, convex or undulating in addition to the straight longitudinal extension shown.

The embodiment shown in FIGS. 3 and 4 largely corresponds to the embodiment shown in FIGS. 1 and 2. Therefore, the same parts are provided with the same reference numerals. As can be seen in FIGS . 3 and 4, a roller 17 serving as a deflection element is provided on the guideway 6 and can be displaced in height in the directions of the double arrow e. In this case, the tension spring 11 engages on the bearing pin 7 'of the roller 17, which is suspended with its opposite end region on a retaining pin 18 located at the bottom end section of the guideway 6 and thereby has a pretension. When the luggage compartment lid 1 is swiveled up in the direction of the arrow c ', the roller 17 is thereby displaced via the tension spring 11 in the direction of the arrow e' to the lower end section of the guideway 6 and thus the luggage compartment lid 1 is displaced into the swivel position b by the force-supporting effect of the tension spring 11 , as shown in FIG . 4 shows. A flexible connecting element 19 is articulated to the articulation point 10 of the hinge arm 2 , which is guided over the roller 17 and is articulated with its opposite end section to a part 12 fixed to the vehicle body. The connecting element 19 consists of a wire rope, a chain or the like flexible tension element. Furthermore, the two opposite longitudinal sections of the connecting element 19 are each surrounded by the telescopic guide 15 , each of which adjoins an extension 14 'of the protective cap 14 surrounding the roller 17 . The telescopic guides 15 ensure that the connecting element 19 does not bend when the luggage compartment lid 1 is pivoted in the two directions of the double arrow c. The roller 17 can also be displaced from above to below by a compression spring, which is in turn supported on the vehicle body, not shown.

In the area of the sprocket 7 , the roller 17 , the telescopic guide 15 or the tension spring 11 , at least one damping element, not shown, consisting of rubber-elastic material or a mechanical spring element is provided, due to the possible vibration vibrations when pivoting the luggage compartment lid 1 and, above all, in it both end positions are eliminated.

Claims (10)

1. Via at least one hinge arm hinged to a vehicle body, in particular luggage compartment lid, the hinged hood being able to be pivoted up out of its closed position by the force-supporting effect of at least one spring element, which is effective at a pivot point lying at a radial distance from the pivot axis of the hinge arm and in turn with Preload is attached to the vehicle body, characterized by an inclined guide track ( 6 ) inclined to the swivel axis (d) of the hinge arm ( 2 ) with a height-adjustable deflection element (chain wheel 7 , roller 17 ), which is located in the closing area of the hinged hood (luggage compartment lid 1 ) is located on the flap-side end section of the guideway with a strongly pre-tensioned spring element (tension spring 11 ), a part which is pivotably mounted on the hinge arm-side articulation point ( 10 ) and is guided via the deflection element and at least medium with a vehicle body-fixed part ( 12 ) bar connecting element ( 19 , chain 9 ) is provided. 2. Foldable hood according to claim 1, characterized in that the angle of inclination (α) of the guideway ( 6 ) with respect to a vehicle vertical axis (k) can be changed and the guideway can be clamped in the respective inclined position. 3. Foldable hood according to claim 1 or 2, characterized in that the guide track ( 6 ) extends in a straight line, concave, convex or undulating over its longitudinal extent. 4. Foldable hood according to one of claims 1 to 3, characterized in that the deflecting element on the approximately U-shaped cross-sectional profile guide track ( 6 ) is slidable or height-adjustable. 5. Foldable hood according to one of claims 1 to 4, characterized in that the deflecting element is designed as a segment-shaped, so skid-like sliding part, wherein the guide track ( 6 ) and / or the sliding part is provided with a sliding layer made of Teflon or the like. 6. Foldable hood according to one of claims 1 to 5, characterized in that a roller ( 17 ) is used as the deflecting element, via which a flexible connecting element ( 19 ) such as a chain, which is pivotably mounted on a pivot point ( 10 ) of the hinge arm ( 2 ), Wire rope or the like is guided, which in turn is connected to a tension spring ( 11 ) fixed to the vehicle body. 7. Foldable hood according to one of claims 1 to 6, characterized in that a sprocket ( 7 ) or a gear is used as the deflecting element, which is in gear-like engagement with the guide track ( 6 ) and is driven in rotation by a motor, the hinged hood (luggage compartment lid 1 ) between the two extreme positions by a chain ( 9 ) guided over the sprocket, which is indirectly or directly on the one hand with the hinge arm ( 2 ) and on the other hand with the tension spring ( 11 ) in an articulated connection, the chain also between the area of the hinge arm and the sprocket is surrounded by a telescopic guide ( 15 ). 8. Foldable hood according to one of claims 1 to 7, characterized in that the movable over the guide track ( 6 ) roller ( 17 ) when swiveling the hinged hood (luggage compartment lid 1 ) by the effect of the here running along the guide track and at the bottom End section or tension spring ( 11 ) fastened to the vehicle body is displaced downwards, a flexible connecting element ( 19 ) guided over the roller ( 17 ) being provided on the hinge arm (articulation point 10 ) and on a part ( 12 ) fixed to the vehicle body, the two longitudinal sections of which are connected by one Telescopic guide ( 15 ) are surrounded. 9. Foldable hood according to one of claims 1 to 8, characterized in that the deflecting element (sprocket 7 , roller 17 ) is surrounded by a protective cap ( 14 ). 10. Foldable hood according to one of claims 1 to 9, characterized in that in the region of the deflecting element (sprocket 7 , roller 17 ) or the tension spring ( 11 ) or in the telescopic guide ( 15 ) at least one made of rubber-elastic material or a mechanical spring element existing damping element is provided.