DE102007056705A1 - Roll-over protection device, particularly for cabriolet-vehicle, has two modules fixed to body with conveying devices for third module with roll over body displace between lowered rest position and lifted support position in two module - Google Patents

Abstract

The roll-over protection device (1) has two modules (3,5) fixed to body with conveying devices for third module (11) with a roll over body (13) displace between a lowered rest position and a raised support position in the two module fixed to the body. Teethes of a latching strip are formed in a front area pointing each other in blunt manner. The teeth of the latching strip and the latch are blunt in their areas by a straight edge.

Description

The The invention relates to a rollover protection device, in particular for a convertible vehicle, with a first body test Module with leadership facilities for an intermediate a lowered resting position and a raised support position in the body-mounted module movable second module with at least a rollover body, after in the preamble of claim 1 closer defined type.

From the DE 37 32 562 C1 a cylinder-piston unit is known by means of which a rollover body from a lowered rest position in a raised support position is movable. The cylinder-piston unit has in this case along its generatrix a rack with a locking toothing, which cooperates with a locking slide in the retraction of a cylinder of the cylinder-piston unit locking and thus supports the position of the roll bar in its extended support position.

Disadvantageously are the rack and the cooperating gate valve thereby formed with sharp teeth, whereby a load the teeth in particular in the support position rollover body in its top area is very big and teeth up to a break can be damaged.

It It is an object of the present invention to provide a rollover protection device, in particular for a convertible vehicle, the aforementioned To create kind, which is a robust, functionally reliable and only a small space requiring locking device for effective prevention of movement of the movable second Module from his raised support layer in his has lowered rest position.

These Task is in a rollover protection device of the beginning mentioned type according to the characteristics of the characterizing Part of claim 1 solved.

It Thus, a rollover protection device, in particular for a convertible vehicle, with a first body test Module with leadership facilities for an intermediate a lowered resting position and a raised support position in the body-mounted module movable second module with at least proposed a rollover body, wherein a Locking device with a arranged on the movable second module Detent strip and one corresponding to the locking bar, on the body-mounted module arranged detent, each with a Saw tooth profile are formed, is provided, and wherein Teeth of the locking bar and the catch arranged in such a way are that they have a movement of the movable second module of his lowered resting position in his increased support position allow in the body-mounted module and move in the opposite direction prevent. It is provided according to the invention that teeth of the sawtooth profiles in a front are formed truncated to each other facing area.

A Rollover protection device according to the invention has the advantage that due to the blunted teeth the locking bar and the catch opposite pointed trained Teeth a lower fracture risk of the teeth in a load case exists because the case in a front to each other pointing area of the teeth adjacent forces spread over more tooth material.

hereby is advantageously the reliability of the locking device elevated. This is very important because it is in the locking device to a survival by vehicle occupants in an accident of the vehicle enabling Device with correspondingly high demands on functional reliability is.

Farther can a space of the locking device compared to conventional Locking devices with pointed teeth can be reduced because the locking bar and the catch due to the blunt tips with otherwise constant geometry closer to each other can be arranged. With constant requirements for a power consumption of Locking device is opposite to the proposed locking device conventional locking devices thus a smaller space required.

If the teeth of the locking bar and the catch in their mutual pointing area truncated or shortened by means of a straight edge The blunting can be very simple and thereby advantageously also be produced inexpensively.

there it can be provided that the straight edge at least approximately in the direction of movement of the catch during a movement of the movable second module opposite the body-first module runs, bringing all the tips of the teeth in one single operation can be dulled in a very simple way can.

In an advantageous development of the invention, it can also be provided that the straight edge with the direction of movement of the catch with a movement of the movable second module relative to the body-mounted first module includes an angle which is smaller than the angle of an oblique edge opposite the Bewegungsrich tion of the catch in a movement of the movable second module relative to the body-first module.

hereby can be ensured that the teeth of the locking bar and the catch opposite to a movement of the second module the body-mounted module securely meshed, as in each Position of the locking bar and the catch to each tooth of the Locking bar or the catch a recess between two teeth the cooperating catch is assigned, in which the tooth can intervene.

Around a slight slipping of opposing teeth, which are intended to be engaged with each other Can the teeth of the locking bar and the catch have a radius in their mutually facing area. such Teeth also have a compact tooth shape, which again only a small space with one of such teeth trained locking device by a corresponding arrangement the locking bar against the catch is necessary.

In an advantageous embodiment of the invention, it is provided that the radius has a value in a range of 5% to 50%, in particular approximately 20%, one in the direction of movement of the catch during a movement of the movable second module relative to the body-fixed having first module extending height of the teeth. It has been shown that with such a radius a very favorable Power consumption of the locking device at low risk of breakage of Teeth is achievable.

A Number of teeth of the catch, which with the teeth the locking bar are engaged, is in an advantageous embodiment the invention as a function of bearing surfaces forces transmitted to the teeth, so that the catch and the locking bar according to the respective Use case are tuned to each other.

Further Advantages and advantageous embodiments of a rollover protection device in particular for a convertible vehicle according to the invention emerge from the claims, the drawing and the Description.

following is an advantageous embodiment of a rollover protection device for a convertible vehicle based on the drawing in principle described.

It shows:

1 a three-dimensional view of a rollover protection device with a body-mounted first module and a movable therein second module for a convertible vehicle;

2 a simplistic schematic diagram of a locking device of the rollover protection of 1 with a locking bar and a catch;

3 a simplified representation of a tooth of the catch of 2 in isolation;

4 a simplified representation of an alternative to the tooth of 3 trained tooth in isolation; and

5 a simplified representation of another alternative tooth formed in isolation.

In 1 is a rollover protection device 1 for a convertible vehicle shown which in an installed state present on each side of the vehicle a body-fixed, substantially vertically arranged first module 3 respectively. 5 having the body-mounted modules 3 and 5 essentially mirror-symmetrical to each other and formed by a traverse 7 above a through-loading 9 connected to each other.

Below is closer to the body-mounted module 3 received, with the body-mounted module 3 representative of the body-mounted module 5 is described.

In the body-mounted module 3 is an extendable second module 11 arranged, which at its upper end a rollover body 13 having. The body-mounted module 3 has guide devices not shown for the between in the 1 shown, lowered rest position and an increased support position in the first module 3 in the vehicle vertical direction movable second module 11 on.

At the rollover protection device 1 is one in the 2 apparent locking device 15 formed, which one on the body-mounted module 3 arranged catch 17 and one with the catch 17 cooperating, on the movable second module 11 arranged locking bar 19 having both the catch 17 as well as the locking bar 19 are formed with a sawtooth profile.

The catch 17 has teeth 21 on, which with essentially identical teeth 23 the locking bar 19 interact. The teeth 21 the catch 17 and the teeth 23 the locking bar 19 each have a straight bearing surface 25 respectively. 27 and a sloping edge 29 respectively. 31 in the form of a tooth flank, with the teeth 21 the catch 17 and the teeth 23 the locking bar 19 each over their straight bearing surfaces 25 and 27 and your oblique edges 29 and 31 interact.

By this arrangement of the teeth 21 and 23 to each other can be ensured that at the second module 11 arranged locking bar 19 opposite to the body-mounted module 3 arranged catch 17 only in vehicle height direction - in particular by one of a spring means not shown on the locking bar 19 acting force - is movable as the teeth 21 and 23 doing over their oblique edges 29 and 31 slide off each other, with the catch 17 by a transversely to the locking bar 19 in particular resilient mounting while the locking bar 19 performs a movement perpendicular to the vehicle height direction.

A movement of the catch 19 in the direction of a vehicle floor in the direction of a vehicle floor on the locking bar 19 acting force - especially in a vehicle rollover at befindlichem in the upper support position second module 11 - is from the locking device 15 This prevents the force on the straight bearing surfaces 25 and 27 the teeth in engagement 21 and 23 is transmitted and thereby no movement of the catch 17 opposite the locking bar 19 acts perpendicular to its extent in vehicle height direction.

In 3 is a tooth 21 the catch 17 presented in isolation, the tooth 21 the catch 17 analogous to the other teeth 21 the catch 17 as well as the teeth 23 the locking bar 19 is formed and will be described below on behalf of this.

The tooth 21 the catch 17 is in a front area by means of a straight edge 33 formed truncated, with the straight edge 33 at least approximately in the direction of movement of the catch 17 during a movement of the movable second module 11 opposite the body-mounted module 3 runs.

By removing a dashed line indicated tip 34 of the tooth 21 can those with such teeth 21 trained detent 17 and the locking bar 19 in the in the 2 shown state compared to a trained with conventional teeth notch and locking bar advantageously closer to each other, so that one of the locking device 15 required space is very low.

An alternative to that in the 2 illustrated tooth 21 trained tooth 35 is in the 3 shown, with the tooth 35 also a straight edge 37 which has an angle here 39 with the direction of movement of the catch 17 during a movement of the movable second module 11 opposite the body-mounted module 3 includes. This angle 39 is smaller than an angle 41 the sloping edge 29 opposite the direction of movement of the catch 17 during a movement of the movable second module 11 opposite the body-mounted module 3 ,

In 4 is another alternative tooth 43 the catch 17 shown, with the tooth 43 in a corresponding tooth of the locking bar 19 facing area a radius 45 having.

In the present embodiment, the ratio of a height 47 of the tooth 43 , which in the present case is about 10 mm, to one of the straight edge 33 formed width 49 of the tooth 43 at least approximately 1: 1. The height 47 determined by the distance between the straight bearing surfaces 25 of two consecutive teeth 21 the catch. The radius 45 in the present case is about 20% of the height 47 of the tooth 43 and thus about 2 mm.

Of course can the ratio of height and width of the teeth Also accept various other values, with larger Conditions and constant height of the teeth a required space can be reduced. Indeed can transmit less forces from the locking device this being done by increasing the number of yourself engaged teeth can be compensated.

The Height of the teeth themselves can be next to the proposed Value of 10 mm, depending on the application chosen arbitrarily become. It should be noted that, depending on the position of the Notch against the locking bar at larger Heights of the teeth a relapse of the catch after reaching its elevated support position up to a plant of the straight bearing surfaces partially can be very big.

Farther It is also conceivable that different tooth shapes in a locking device can be combined with each other.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3732562 C1 [0002]

Claims (7)

Rollover protection device, in particular for a convertible vehicle, having a first module ( 3 . 5 ) with guide means for a between a lowered rest position and an increased support position in the body-mounted module ( 3 . 5 ) movable second module ( 11 ) with at least one rollover body ( 13 ), wherein a locking device ( 15 ) with one on the movable second module ( 11 ) arranged locking strip ( 19 ) and with a corresponding one to the body-mounted module ( 3 . 5 ) arranged catch ( 17 ), which are each formed with a sawtooth profile, is provided, and wherein teeth ( 21 . 23 . 35 . 43 ) the locking strip ( 19 ) and the catch ( 17 ) are arranged to each other such that they move the movable second module ( 11 ) from its lowered rest position into its raised support position in the body-first module ( 3 . 5 ) and prevent an opposite movement, characterized in that teeth ( 21 . 23 . 35 . 43 ) the locking strip ( 19 ) and the catch ( 17 ) are truncated in a front facing each other area. Rollover protection device according to claim 1, characterized in that the teeth ( 21 . 23 . 35 . 43 ) the locking strip ( 19 ) and the catch ( 17 ) in their mutually facing area by means of a straight edge ( 33 ) are dulled. Rollover protection device according to claim 2, characterized in that the straight edge ( 33 ) at least approximately in the direction of movement of the catch ( 17 ) during a movement of the movable second module ( 11 ) relative to the body-fixed first module ( 3 . 5 ) runs. Rollover protection device according to claim 2, characterized in that the straight edge ( 33 ) with the direction of movement of the catch ( 17 ) during a movement of the movable second module ( 11 ) opposite the body-first module ( 3 . 5 ) an angle ( 39 ) which is smaller than an angle ( 41 ) an oblique edge ( 29 . 31 ) of the tooth ( 21 . 23 . 35 . 43 ) relative to the direction of movement of the catch ( 17 ) during a movement of the movable second module ( 11 ) opposite the body-first module ( 3 . 5 ). Rollover protection device according to one of claims 1 to 4, characterized in that the teeth ( 21 . 23 . 35 . 43 ) the locking strip ( 19 ) and the catch ( 17 ) has in its mutually facing area a radius ( 43 ) exhibit. Rollover protection device according to claim 5, characterized in that the radius ( 43 ) has a value in a range of 5% to 50%, in particular about 20%, in the direction of movement of the catch ( 17 ) during a movement of the movable second module ( 11 ) opposite the body-first module ( 3 . 5 ) extending height ( 45 ) the teeth ( 21 . 23 . 35 . 43 ) having. Rollover protection device according to one of claims 1 to 6, characterized in that a number of teeth ( 21 . 35 . 43 ) of the catch ( 17 ), which with the teeth ( 23 ) the locking strip ( 19 ) is in a handle, depending on the straight bearing surfaces ( 25 . 27 ) the teeth ( 21 . 23 . 35 . 43 ) transmitted forces is selected.