DE1605887C3 - Joint arrangement for vehicle hoods - Google Patents

Description

3 4

arranged gears are provided which are in engagement with the pipe in the lower part through a thread-speaking tooth sector. bolt 17 is closed, which is inserted into the tube

An advantageous further development of the joint arrangement is screwed and, for example, a hexagon

tion is that the control member of a saving (punched) to accommodate a key

flexible band, for example in the form of a link 5 The threaded bolt 17 allows the supply

chain, is formed. collective compression of the spring 15 to be adjusted.

Embodiments of the invention should be based on the cam 6 ^{1 of} the pivot lever 6 is supported

■ the drawings are explained in more detail, in which against the sliding disk 16 movable in the tube 14 from.

1 shows the joint and joint according to the invention. A bent tab 18 of the carrier allows

weight compensation device for the bonnet io the displacements of the angle iron 1 in closed-

shows; ner position as well as that of the pivot lever 6

Fig. 2 shows the device according to Fig. 1 before in the open position. The upper part of the tube 14 can be assembled the individual parts being milled separately to accommodate the displacements of the pivot to one another are shown; hebeis 6 to ensure.

FIGS. 3 to 8 show details in the embodiment. The shape of the carrier 9 can of course

different variants of the individual parts; modified according to the joint conditions

Fig. 9 shows the assembly of the joints and joints. An example of this can be seen in Fig. 6,

weight compensation device in association with a swivel lever 6 used in this case

Vehicle hood; in Fig. 5 is shown

Fig. 10 shows the various moments in STEL 20 I _n (Jen Fig. 3 and 4 are variants of the Ausfühlungen of the cam of the pivoting lever on the intermediate of angle iron 1 approximate shape shown,
washer of the compensating spring receiving In the exploded view of FIG. 2 pipe; are the different ones that make up di3 institutions

Fig. 11 shows the joint and weight compensation parts clearly visible. Of course you can

device of the hood according to a modified ² 5 also as a variant, a system with a single

Embodiment; Use swivel lever.

FIG. 12 shows the device according to FIG. 11. According to a feature of the invention, the

the assembly, whereby the various individual parts are doubled with parts of the elements that are studded with teeth

are shown separately from each other; provided if the

Fig. 13 shows the joint and weight compensation 3o the loads for the tooth cross-sections are too large,

The device according to FIG. 11 in association with a tube 14 leading to the spring 15 can be a

Bonnet in open position; form an integral part of the carrier 9. The-

Fig. 14 shows the wrapping of the resilient water can in fact be provided twice and made up of two

Link around the sector of the angle iron; Half-shells 14 ¹ -14 ² (Fig. 7) be formed by

FIG. 15 shows the device according to FIG. 10 in which 35 electrical spot welding can be connected

a hood in the closed position as well as the location or any other method of closing

the displacement of two points on the bonnet; assembly. In this case, the half-shells form

16 shows that of another weight from the carrier 9. The regulation of the compression

Joint device assigned to the same system. the spring can be removed by attaching a screw

The embodiment according to FIGS. 1 to 10 can be reached by 40 pipe section, which is in extension of the

consists of the following parts: the lower part of the half-shells is welded on.

An angle iron 1, which is on the hood when the regulation of the compression of the can attach and the spring on his upper leg is not necessary and if this is only one Has elongated holes 2 for position adjustment and fastening low spring force, replaces a simple one of the angle iron, for example by means of bolts (Fig. 1) 45, pin washer 19 (Fig. 8) advantageously has the thread, bolt 17.

The side leg 3 of the angle iron has the parts, such as angle iron, pivot lever, carrier, in the rear part a toothed sector 4 in the middle of the gears or toothed sectors are made of sheet metal for the passage of a rivet 5 with an intermediate piece by punching and bending, which is pierced , which serves as a hinge axis for a 50 thickness of the sheet metal a function of the pivot lever 6 to carry, the lower part of which is a cam-coming loads. Depending on their design, profile (cams 6 ¹ ) can have this pivot lever, the connecting rivets serving as hinge axes, carries an axis 7 on which the gear wheel 8 can be rotatably provided with shoulders or with intermediate bearings. In the embodiment shown, pieces as shown in FIG. 2 are used, two pivot levers 6 are provided. 55 You can also use any other known connection

A carrier 9 is on the corner pillar of the cab system, in particular screws and nuts.

or see on a firmly connected to the shoring.

Fitting connected by bolts or rivets, which should allow the joint to work

Pierce holes 10. The front part of this door-opening mechanism determines the bonnet

gers has a tooth sector 11, the center of which is separated by 60 from the counterbalance mechanism

the carrier 9 carries a bore, which are considered the joint.

axis 12 of the pivot lever 6 on the carrier. The joint device is attached to the driver's cab

The latter is along a rectangular recess 13 by means of the carrier 9 and on the engine hood 20

cut out, in which a tube 14 is housed, fastened by the angle iron 1 (Fig. 9) after

connected by welding to the support 9 65 of this figure, the device is shown in profile

The tube 14 receives a spring 15 (see Fig. 2), "When opening the hood under the action of a

the force in the upper part against a sliding washer 16 (arrow / 1) turns the angle iron (arrow / 2) around

supported, which is mounted inside the tube, while its axis (rivet 5) rotated. The tooth sector 4 of the

5 6

Angle iron also swivels (arrow / 3) and axes reduce the occurrence of play. The decreed the direction of rotation of the gear 8 (arrow / 4), reducing the dimensions of the pivot lever verdas rotates around its axis 7. · Lend them greater strength and limit

That with the tooth sector 11 of the fixed carrier 9, the risk of buckling.

meshing gear 8 pushes the pivot 5 The possible use of different springs lever 6 in the direction of arrow / 5, namely under the same mechanism allows compensation Interposition of its axis 7. The hood of hoods of very different weights, now assumes its open position. When closing, FIGS. 11 to 16 show a modified opening process the sequence of movements follows in reverse with a flexible connection ten order. i ° location of a toothing.

In Fig. 9 are the displacement locations of point X. The device can be constructed as follows:

in the middle of the rear boundary of the engine- An angle iron 21 that is attached to the engine hood

hood and the point Y is to be strengthened on the side parts, has two elongated holes 22 on its upper leg, which regulate the position

It turns out that the bonnet rises, all- * 5 and the fastening by bolts, for example, possible pivoted and then led forward arbor. The side leg 23 has in the rear will. Part of a sector 24, the center of which is at 49

This shift is due to the ratio of (Fig. 14) and the looping through the post-base diameter of the tooth sector 11 of the carrier 9 yielding connection, the role of which is enabled below and the tooth sector 4 of the angle iron 1. ^{20 will be} purified is allowed.

The angular displacement of the angle iron 1 depends on this sector at 39- a projection that

thus on the ratio of the base diameter, both play the role of a stop in the open position For example: An opening 51 of the side leg 23 is allowed over

a rivet 27 ¹ and the intermediate piece 26 ¹ the

Sector diameter of the carrier 9 ^ ₃ 25 articulated mounting of the pivot lever 26, which has a profile in the form of the cam 26 ^{1 in the sector diameter of the angle iron 1 lower part}

shows. The two pivot levers are with the help of the

«3 not shown = starting angle of the angular _{axis 32} on a support 38 * articulated, the

iron 1 against the swivel lever 6. _fixed ^ _the compensation system by welding

al = angle after the shift. ³ ° is connected to ^{the tube 34} , which serves as a guide for the

d = angular displacement of the pivot lever 6. ^{Spring 3S and the} sliding washer 36 are used.

_a j __ _a 3-f-3 (j The carrier 29, which can have any shape

and which is also connected to the compensation system

In order to bring the system into equilibrium, the assembly is allowed to be fastened over the moment that the hood weight is 35 elongated holes 30 on a fitting or a corner opposite the axis5 (Fig. 9) exerts balanced pillars of the body. The upper part of the carrier 29 by the moment of the thrust of the spring 15 carries a hole at the articulation point 44 and takes the pivot lever 6 opposite the hinge axis 12. there the axis that is one end of the yielding

The pressure of the spring is set on the cam of the connection, while the other end is fastened to the sector 24 with the pivoting lever with the interposition of the slide 40 of the pin 41
disk 16 exerted The profile of the cam is so.

stipulated that the moment of the spring force is ^{formed by a natural connection through a chain 40 1} , which increases when this decreases (maximum opening of the dimensions as a function of the hood to come into effect) and decreases the moment when these are selected for the loads. An axis 37 enables force to increase (closing the hood - Fig. 10). 45 the lower part of the spring 35 and a tube 31 fixed

This variation of the moment is intended to keep a good grip on the sliding washer 36, thereby creating a Kip-HaIt Make sure the hood is in the open position and pen while the cam of the on the other hand, too fast opening at the moment the pivot lever is avoided. Share like Winkeides Prevent unlocking of the closed hood. irons, swivel levers, carriers, etc., are made by

The direction of the spring's thrust axis is made with 50 punching and bending, the thickness of the Consideration of the sheet metal used for the storage of the system is a function of the loads joinable space and the forces to be overcome to assemble serving rivets, which serve as joint sub Utilizing the maximum force of the spring fixed axis, can be offset or with interlocking. between pieces, as shown in Fig. 12, related

According to the invention, a maximum opening will be 55. Of course, any other can also Bonnet ensured · assembly system to be applied.

The attachment of the joint system to the vehicle The shape of the parts can be changed as required,

happens quickly and is not associated with any danger, depending on the opening angle to be achieved, the the, with the spring then put under tension necessary displacement of the rear part of the when the hood is attached 60 hood, the loads to be borne, the location

The displacement of the hood during the opening of the hinge with respect to the body, the choice allows the contact with the clear opening of the hinge connection and the weight balance windshield, the front louvre and the same system.
to avoid the side air vents. The use of a single pivot lever the

The movement of the bonnet forwards with the joint device according to the invention are viewed as opening it facilitates the attachment of the panes - a variant of the invention,
wiper. The low space requirement of the system makes it possible to use ■

tert its storage. The small number of joint-all known types are used, they

7 8

but cannot be separated from the joint device The center of the axis 25 approaches the articulation

will. point 44, the enlargement of the projection (p ¹ ) for

In fact, the displacement of the hood a <C90 ° brings about a slowing down of its opening and closing movement by shifting the center of the axis 25 and the looping of the sector 24 of the angle iron 21 5 allows a considerable rotation of the hood,
determined by the articulated connection. The weight balancing system keeps the flexible connector in the middle of the axis 25 under tension by reducing the size of the manure and thus allows the wrap-around projection (p ¹ ) for a> 90 ° Hood slowed down, namely

The joint and weight compensation device is OK with a constant increase in the wrap

in Fig. 13 shown, in the open position winkeis,

in association with a vehicle hood. The swiveling pressed in the direction of arrow 52

When stressed in the direction of the arrow lever 26 pivot about the axis 32, the

is the angle iron 21 in rotation about the cam 26 ^{1 of} this pivot lever, which is against the

Axis 25 corresponding to arrow 50 ¹ offset. 15 support sliding washer 36 , press the springs 35 in the

The resilient connection that has a fixed point as indicated by arrow 53 together, its lower end

with the angle iron 21, loops around is held by the axis 37

the sector 24 and exercises on the pivot lever 26 under The system is shown in the closed position in FIG.

Interposition of the axis 25 in the direction of the

Arrow 52 from a print. 20 The opening movement is reversed

14 should now be considered, the sequence of the individual steps; during this

it is assumed that: becomes the yielding connection due to the pressure

_r , -τ- j τ. · U · -er! · J τ-, the spring on the cam of the pivot lever 26

L = the length of the _{flexible connection, the tension being maintained} . The hood rises

Distance between 43 and 44, pivoted gradually, is led forward

r = Abs and between axes 25 and 49, _{and ends the} opening process.

ri = distance between axles 49 and 43, raising and pointing the hood will be

cc = wrap angle of the flexible _{by the rotation of the pivot lever 26 to the}

j Au ^r : ^m ^ ^Ung ' us Aii λ αλ ι ^{axis 32} , whereby the lateral air

d = distance between the articulation point 44 and the _{point of the clear opening of the windshield}

the tangent point 431 of the resilient are released. The place of displacement of the

Connection with the radius r \ _Pui f _kt ^S _e χ of _the hood is the curve 54, dit the

/ = Distance between the articulation point 44 and points Y the curve 55

the center of the axis 25 By calculation it was found that the location

ρ = r projection of the tangent to the _{center of the} ip _Unk tes the axis 25 by being looped

RadiusrS is determined starting from 44 _{by di} / _yielding connection,

P ₁ = projection of τ- onto the perpendicular to, _{however, also dad} ^e _urch ^ _{that the Ach} | _{e 49} e _ine E _x ^ ₁₁ .

Tangent 44-431. J ^. ^ ^ ^. ^ ^

The calculation shows that with a constant During the opening movement - one considers

Value of L: 40 a constant increase in the wrap angle

1. The value d decreases when the looping of the flexible connection - calls the eccentricity angle α decreases when the looping win- a change in the increase in the opening angle kel α increases; the hood protrudes and allows a gradual

2. The length of the projection ρ decreases when the rotation increases up to 90 ° as a function of the lifting and the pre-wrap angle; 45 lead the hood.

3. The length of the projection ρ increases when the eccentricity, it is also possible to wrap angle α over 90 °; using a relatively small radius r ¹ ,

4. The length of the projection p ¹ for a Umschlin- a significant rotation of the pivot lever 26 at angle α increases between 0 and 90 °; Enlargement of the shift of the center point

5. The length of the projection p ¹ decreases when the 50 of the axis 25 causes what is a considerable wrap angle α over 90 °. lifting and demonstrating the bonnet.

The reduction of the value d (according to 1.)), In Fig. 16 another embodiment is shown.

the reduction of the projection ρ for α <90 °, at which the weight compensation system is made

(after 2.)), a simple spring 46, which is on the one hand

the enlargement of the projection ρ for α> 90 ° S5 an appropriate point at the lower part of the

(according to 3.)) contribute to the reduction of the value swivel lever 26 and on the other hand on the carrier 29

from / at. is consolidated.

For this purpose 3 sheets of drawings

Claims (5)

1 2 at one end a first hinge axis carried by the console of the hood and at the other end a second hinge axis held by the carrier. With the 1. Joint arrangement for vehicle hoods with a push rod, a cam near the second is firmly connected to a hood-mounted angle iron and a moving joint axis. The cam works with the support that is fixed to the tool and that interacts with the angle iron in a compensation system. Between the times via an articulated lever and on the other hand to the carrier and the console further connection-achieving a certain pivoting movement elements are arranged, which the console and thus is connected to control members, with the engine hood when rotating the console around the end of the angle iron Reinforce control member guide io first axis and a certain transanformed, characterized in causing lation movement (US Pat. No. 2,840,847).
that the articulated lever as a pivot lever (6; 26) with such parallelogram carriers can be designed without straight guidance and that a spring (15; 35; 56) movements in a manner known in combined vertical, horizontal and pivoting movements, but they have the disadvantage having weight balancing device (14, 15 that they require a lot of space, the push rods 15; 34, 35) is provided, with a cams (6 ¹ ; variety of) formed on which are prone to kinking because of their lengths because of the pivot levers (6; 26) Articulation points many points for the 26 ¹ ) with the spring (15, 35, 56) is in engagement. Occurrence of an undesired game 2. Joint arrangement according to claim 1, marked, a large part of the spring force through the .Schubzeich is absorbed by a rod on the pivot lever (6) 20 and axes, the arrangement rotatable (axis 7) mounted gear (8), which is constantly under tension and the adjustment of the with the angled engine hood designed as a toothed sector (4) is very difficult. iron end and an integrally formed on the carrier (9) is also known a joint for motor vehicle Tooth sector (11) is in engagement. tool hoods, in which each of the 3. Joint arrangement according to claim 2, marked ² 5 nierachse articulated part approximately perpendicular to the cluster is guided displaceably by an adjacent to the toothed nierachse so that a Versector (II) of the carrier (9) integrally formed tab (18). push in the sense of moving away the articulated 4. Joint arrangement according to claim 2 or 3, part of the rear support inevitably characterized by two in parallel when the hood is opened. At this joint Gearwheels (8) arranged on levels and marked with ent- 3 <> the guides designed as elongated holes serve speaking tooth sectors (4; 11) in engagement for the hinge axis at the same time as a guide for stand. with the pivot axis connected plates, which from 5. Joint arrangement according to claim 1, marked with the hood and the guide remote tooth drawn through a wheel forming the control member. The gears roll on the one hand on a flexible belt (chain 40 ¹ ). 35 from a stationary rack parallel to the guides and, on the other hand, are in tooth engagement with segments connected to the hood (DT-AS 1216134). This known joint arrangement has the after -4 ° part that the slot guides in the vehicle fixed The invention relates to a hinge arrangement for carriers for the articulated lever with regard to the parallelism. Vehicle hoods with a hood-mounted angle must be manufactured extremely precisely, otherwise the iron and a vehicle-mounted carrier that is self-locking with the arrangement. The same request angle iron is connected to the production of the tooth sector of the other to achieve a certain pivoting angle iron and to which the rack movement is connected to control members, whereby this double toothing still has a very common one At the end of the angle iron a control link guide makes precise adjustment necessary,
is molded. The task on which the invention is based It is already a hinge for an engine or trunk - it is therefore a hinge arrangement for the one-space hood with the longitudinal spacing on the hood at the beginning of the 5 ° to create the simple steered, forming a pentagon, stationary on the way in a space-saving and safely functioning Body-attached guide arms known, execution can be produced. whose rear link arm with the front This task is in the articulation of the two-part handlebars achieved by Verzahnungsemgriff ge initially described type in that the is coupled. The toothing engagement 55 has articulated levers as pivot levers without straight guides forming gears is designed with different diameters and that in a manner known per se on, wherein the approximately vertical lifting off of a counterbalance hood edge having a spring effecting gear is provided in the smaller direction, with one on the pivot diameter has (DT-AS 1051 663). lever molded cam with the spring in engagement With this well-known hinge, only a 60 can stand. vertical lifting of the hood before the actual expedient, the joint arrangement has a Perform a pivoting movement, a translational gear rotatably mounted on the pivoting lever, Movement of the hood is not possible. which with the trained as a tooth sector Also known are so-called parallelogram angle iron ends and one formed on the carrier carrier through which the bonnet is engaged on the vehicle 65 tooth sector. It can be adjacent is pivotally attached. The hood has a bracket attached to the toothed sector of the carrier, while being molded on the body of the vehicle. There is an improvement in force absorption a carrier is attached. A push rod is given when there are two in parallel planes