EP2664735B1 - Door stay for commercial vehicle superstructures - Google Patents

Description

The invention relates to a door lock, for detecting an open door of a commercial vehicle body, in particular next to a side wall of the commercial vehicle body, with an adjustable between a non-use position and a use position locking lever, with a locking lever in the non-use position at least partially accommodating housing, the locking lever in the position of use blocks the closing of the door, wherein the locking lever is connected via a spring means to the housing, wherein the locking lever in the use position against the restoring force of the spring means is at least partially pulled out of the housing, wherein the spring means is disposed in the non-use position at least partially in the housing and wherein the locking lever is pivoted in the position of use relative to the non-use position and at least partially pulled out of the housing.

Door retainers are used in conjunction with commercial vehicle superstructures, which can be closed with the help of at least one door. In the commercial vehicles in particular trucks, trailers, semi-trailers and the like come into question. The structures of such commercial vehicles can be designed, for example, as box bodies or as tarpaulin structures. Box bodies have solid walls, which are usually formed by panels, which regularly consist of a composite material. In the case of so-called refrigerated body structures, the panels can have an insulating, foamed plastic core. The outer cover layers of the panels are usually formed by a metal sheet or a fiber-reinforced plastic.

The sides of tarpaulins are closed by tarpaulins. Tarpaulin bodies with gullwing doors on their rear walls and laterally movable tarpaulins are also known as curtainsiders. To support and hold the tarpaulin is regularly provided a supporting structure of stanchions, spars and hoops.

The abovementioned structures may have doors in the side walls, but in particular have doors in the rear wall. In most cases, two hinged doors are provided in the rear wall, which can be opened so far that they are aligned approximately parallel to the adjacent side wall and arranged next to the corresponding side wall. The doors are then positioned to save space and interfere neither during loading and unloading nor when maneuvering the commercial vehicle.

Door retainers have the task of keeping a door in the open position and preventing accidental slamming of the door. Accidentally slamming doors can injure people and damage the truck body itself or other objects.

Door retainers of the type mentioned have a locking lever, which can be adjusted with the door closed in a non-use position and with the door open in a position of use. In the non-use position of the locking lever is arranged under the commercial vehicle body and partially taken in some known door arresters in a housing of the door arrester. The locking levers can sections of the housing and against the Restoring force of the locking lever with the housing connecting spring are pulled out into a position of use. In the use position, the locking lever keeps the door open and pushes the spring, the locking lever from the outside against the door. The spring means is arranged to protect against external influences in the housing.

A door arrester according to the features of the preamble of claim 1 is in the EP 1 516 987 A1 described. The spring is arranged in the non-use position as well as in the position of use in the housing, which is sealed to the outside. However, the repeated use of the door handle, ie the repeated extraction of the locking lever can still penetrate dirt and moisture into the housing and affect the longevity and function of the door arrester. For example, the door lock can be blocked by the dirt and / or the spring can fail due to moisture-related corrosion. However, a sudden failure of the door arrester is problematic because it then easily comes to property or personal injury.

Furthermore, from the DE 297 01 673 U1 a door lock described with a spring means which is arranged in a cavity of the locking lever. This measure allows the spring to be longer than the length of the housing itself.

Therefore, the present invention has the object, the above-mentioned and previously described in detail door fastener such and further, that a higher reliability can be guaranteed.

This object is achieved according to the invention in a door lock according to claim 1.

In order to adjust the locking lever from the non-use position to the use position, according to the invention, the locking lever is at least partially pulled out of the housing and rotated relative to the housing and / or pivoted. The pulling and panning can be done sequentially or simultaneously, depending on whether and how a guide is provided between the housing and locking lever.

Regardless, the housing and the locking lever may have a corresponding forced operation, which is designed to force a defined pivoting of the adjustment when adjusting the locking lever from the use position to the non-use position. For example, the restoring force of the spring means pulls the locking lever into the housing, wherein correspondingly arranged and aligned surfaces of the housing on the one hand and the locking lever on the other slide together and so pivot the locking lever in a direction in which the locking lever against the use position, preferably by about 90 ° , is pivoted. Preferably, the locking lever is moved in this way in a position in which the locking lever, preferably flat, is arranged under the structure of the commercial vehicle.

The reliability of the door arrester can be significantly increased if the spring means is arranged in the non-use position both at least partially in the housing and at least partially in the shank part of the locking lever. This means that at least the not provided in the shaft portion of the spring member is at least accommodated in the housing. In other words, the spring means is partially protected at least by the housing and partially protected at least by the shank part against external influences. The spring means may be at least partially protected both from the housing and the shaft part against external influences. This portion of the spring means preferably constitutes the largest possible part of the spring means and is arranged in a portion of the shaft part, the in turn, in turn, is arranged in the housing of the door arrester.

According to the invention is thus achieved that in the housing penetrating dirt and / or moisture penetrating into the housing can be kept away from the spring means. In any case, the dirt and / or moisture does not come into direct contact with the spring means. Therefore, the spring means in the non-use position is preferably also received to a fairly large extent in the shank part of the locking lever. It is ultimately appropriate if the spring means in the non-use position is substantially completely received in the shaft part of the locking lever. However, it may be useful if the end of the spring means connected to the housing is not received in the shaft part to Malfunction or damage to the spring means to avoid. Alternatively, a structural design of the door arrester can be achieved as well.

In order to achieve a particularly good encapsulation of the spring means and a good protection of the spring means against external influences such as moisture and dirt, in a first embodiment of the door arrester, the shaft part and the housing in the non-use position of the locking lever form a substantially closed cavity , In other words, the housing in the non-use position closes the opening of the shaft part substantially completely. The spring means is arranged in the cavity and thus well protected. In principle, it can be particularly effective if the cavity formed is tightly closed. However, since the cavity is optionally opened anyway, when the locking lever is moved into the position of use, if necessary, only a substantially closed cavity sufficient.

In order to complete the cavity between the shaft part and the housing at least substantially against the entry of moisture and / or dirt, the shaft part and the housing in the non-use position can abut against corresponding abutment surfaces. There, the shaft part and the housing are preferably in a flat contact with each other. Further preferably, the stop surfaces can also be formed at least on one side by sealing means. The sealant preferably have a correspondingly high elasticity.

Regardless of the spring means is disposed in the non-use position substantially completely in the cavity of the locking lever. The spring means is then shielded over substantially its entire length from the shaft portion of the locking lever to the outside. In addition, a large part of the shaft part in the housing of the door arrester can then be arranged in a simple manner and thus provide in the corresponding area for a kind of double shielding of the spring means.

Alternatively or additionally, the spring means may also be arranged substantially completely in the housing in the non-use position. The spring means is then shielded from the housing to the outside over substantially its entire length. In addition, a large part of the shaft part can then be arranged in the housing of the door arrester in a simple manner and thus provide in corresponding areas for a kind of double shielding of the spring means.

For the purpose of a further sealing, a sealing element can be provided between the shaft part of the locking lever and an opening of the housing. Thus, the housing can be sealed against entry of moisture and / or dirt. The opening is preferably the opening from which the shaft part passes out of the housing to the outside. It is preferred that the sealing element is arranged as far as possible outside in the opening. The sealing element can in principle but also be arranged further inside in the opening. As a result, if necessary, only the part of the housing sealed with the aid of the sealing element will be smaller.

To achieve longer life of the door arrester before it has to be repaired or replaced, the housing or the locking lever can be made of plastic. It is particularly preferred in this context if both the locking lever and the housing are made of plastic.

In addition, it may be advantageous if the locking lever is integrally formed. For example, a premature failure of a component connection of the locking lever is avoided. Alternatively or additionally, the production can thus be accelerated and / or cost-effective.

For manufacturing reasons, the locking lever can be formed in total as a hollow component, even if the cavity of the shaft part is only partially used to receive the spring means. Basically, it makes sense to produce a one-piece and / or hollow locking lever to produce the locking lever in the gas internal pressure process.

To avoid injury to the driver of the utility vehicle when operating the door arrester, the locking lever can enclose a handle opening. Thus, in particular, the hand of the driver can be protected, which engages in and / or through this opening.

Alternatively or additionally, the spring means can be claimed in the Gebrausstellung the locking lever to train. This has constructive advantages in terms of the construction of the door arrester. The door lock can be made so easy and inexpensive. In addition, if required, a longer life of the door arrester can be achieved.

In order to ensure optimal functionality of the door arrester over a longer period of time, a tensioning device can be provided for retightening the spring means. A decrease in the restoring force of the spring means can be counteracted.

Fig. 1

ein Nutzfahrzeug mit einem erfindungsgemäßen Türfeststeller in einer perspektivischen Ansicht,

Fig. 2

ein den Türfeststeller umfassendes Detail des Nutzfahrzeugs aus Fig. 1 mit dem Feststellhebel in einer Nichtgebrauchsstellung in einem Schnitt entlang der Schnittebene II-II gemäß Fig. 1,

Fig. 3

das Detail aus Fig. 2 mit dem Feststellhebel in einer Gebrauchsstellung und

Fig. 4

den Türfeststeller aus Fig. 2 in einer Explosionsdarstellung.

In the following, we will explain the invention in more detail with reference to a drawing that represents only one exemplary embodiment. In the drawing shows

Fig. 1

a commercial vehicle with a door lock according to the invention in a perspective view,

Fig. 2

a comprehensive detail of the door locker of the commercial vehicle Fig. 1 with the locking lever in a non-use position in a section along the cutting plane II-II according to Fig. 1 .

Fig. 3

the detail Fig. 2 with the locking lever in a position of use and

Fig. 4

the door lock Fig. 2 in an exploded view.

In the Fig. 1 a commercial vehicle N is shown in the form of a semi-trailer, which is pulled by a tractor Z. The illustrated and so far preferred commercial vehicle N carries a structure A in the form of a box body with solid side walls W and a fixed roof D and a fixed front wall F. The corresponding walls are formed by so-called panels, which are constructed in multiple layers with a foamed plastic core. However, it could alternatively also be a tarpaulin structure. At the back of the commercial vehicle N, a rear wall frame is provided with two doors loading the space L of the commercial vehicle N in the form of gullwing doors. The doors are used to open them around the hinges S pivoted outwards until the doors T are arranged to save space approximately parallel and laterally to the side walls W. In this position, the doors T can be held by door retainers 1, of which in the present case each side of the commercial vehicle N is assigned a door arrester 1. An accidental slamming of the doors T, such as during a charging process, can be avoided.

In the Fig. 2 is a section through the commercial vehicle body A from Fig. 1 shown, which represents one of the door lock 1 in detail. The door arrester 1 comprises a mounting portion 2, which is used to mount the door arrester 1 on the commercial vehicle N, here in particular on the floor B of the commercial vehicle body A. From this mounting portion 2, a housing 3 is supported, in which a shaft portion 4 of a locking lever 5 is received. A handle portion 6 and a locking portion 7 of the locking lever 5 looks out of the housing 3 in the illustrated and so far preferred door lock 1. The housing 3 and the shaft part 4 arranged in the housing 3 extend transversely to the direction of travel of the commercial vehicle N, ie transversely to the associated side wall W of the commercial vehicle body A.

From the in the Fig. 2 illustrated non-use position of the locking lever 5, in which the locking lever 5 is aligned approximately parallel to the bottom B of the commercial vehicle N and below the bottom B of the commercial vehicle N, the locking lever 5 in the in the Fig. 3 shown use position to be adjusted. In this position of use, the locking lever 5 holds the door T in the open position.

When illustrated and so far preferred door lock 1, the locking lever 5 to a locking portion 7 with a V-shaped receptacle 8, which in the present case but not necessarily by two V-shaped struts 9 is formed. In the V-shaped receptacle 8, a locking bar V for locking the door T can be taken and secured in the closed state. The locking bar V is perpendicular to the door T and is arranged in the illustrated and so far preferred commercial vehicle N in the door T.

In the position of use, the shaft part 4 of the locking lever 5 is partially pulled out of the housing 3 with respect to the non-use position. Between the shaft part 4 and the locking portion 7 of the handle portion 6 is arranged, which forms a closed handle opening 10. At the handle portion 6 of the door lock 1 can be taken both in the non-use and in the use position to adjust the locking lever 5 in the other position.

The individual components of the door fixed plate 1 are in the exploded view of Fig. 4 shown. The housing 3 is formed in two parts. The two housing parts 11,12 form an inner cavity in the connected state. Inside the cavity, a spring means 13 is fixed to the housing 3, which is formed in the illustrated and insofar preferred door lock 1 as a coil spring. The spring means 13 is fixed at one end 14 to a pin 15 provided between the two housing halves 11,12. With the opposite end 16, the spring means 13 is fixed to the shaft part 4, namely at illustrated and so far preferred door lock 1 on a perpendicularly extending through the shaft part 4 pin 17th

The spring means 13 is thus arranged starting at its one end 14 in the housing 3. Starting with the opposite end 16, the spring means 13 is arranged in the shaft part 4, wherein the shaft part 4 in turn is partially arranged in the housing 3. This results in at least partially a double shielding of the spring means 13 in the housing 3 on the one hand and in the shaft part 4 on the other.

When illustrated and so far preferred door lock 1, the locking lever 5 can be pulled out against the restoring force of the spring means 13 partially from the housing 3, wherein the spring means 13 is increasingly pulled out of the housing 3. However, this is not a problem if the spring means 13 is further enclosed in this area of the shaft portion 4 and protected from external influences such as moisture and dirt. Because the inner opening 18 of the shaft part 4 remains disposed in each position of the locking lever 5 within the housing 3.

The shaft part 4 and the housing 3 are formed corresponding to each other so that in the non-use position of the locking lever 5 and the housing 3 form a substantially closed cavity. Ingress of moisture and / or dirt can be largely prevented. For this purpose, the inner end 18 of the shaft part 4 recesses 19, in which the pin 15 can be accommodated for fixing the spring means 13 on the housing 3. in the Incidentally, corresponding abutment surfaces 20,21 are provided at the inner end of the shaft part 4 and the housing 3, which abut each other in the non-use position and thus further impede the penetration of moisture and / or dirt into the interior of the shaft part 4. For further sealing of the interior of the shaft part 4 to the outside, corresponding sealing means could be provided on the stop surfaces 20,21 and possibly on other surfaces.

The housing 3 and the shaft part 4 form in the illustrated and so far preferred door lock a forced operation. In the present case, at least one rib 22 is provided in the housing and a groove 23 is provided on the shaft part into which the rib 22 of the housing 3 can be received. This is also the case in the non-use position of the locking lever 5. If the locking lever 5 is now pulled out into the position of use, the groove 23 is slowly pulled down by the rib 22. Subsequently, the shaft part 4 can also be rotated in the housing 3. This is necessary to pivot the locking portion 7 of the locking lever 5 upwards and bring into abutment with the door T, as shown in the Fig. 3 is shown.

In the use position of the locking lever 5 is held without further action by the driver of the commercial vehicle N in position, by the restoring force of the spring means 13. The restoring force of the spring means 13 pulls the festive section 7 against the door. To bring the locking lever 5 back to the non-use position, the locking lever 5 must first be pulled far out of the housing 3, so that the locking rod V out of engagement with the locking portion 7 passes and the Locking lever 5 pivoted about its shaft part 4 around and / or can be rotated. However, the locking lever 5 does not have to be completely manually pivoted to the desired position in the non-use position. At the front opening of the shaft part 4 of the locking lever 5, namely, a tapered surface 24 is provided, which comes into contact with the rib 22 of the housing 3. The tapered surface 24 slides while pulling the shaft part 4 into the housing 3 due to the restoring force of the spring means 13 on the rib 22 and turns the locking lever 5 in this way automatically in the orientation of non-use position.

There may also be more than one rib 22, a groove 23 and a beveled surface 24. Also, the groove 23 and the rib 22 between the shaft part 4 and housing 3 can be reversed. However, it is also conceivable to provide other means which have the same technical effect.

So that no moisture and no dirt can penetrate into the housing 3 as a result of the gap forming between the shaft part 4 and the housing 3, the housing 3 adjacent to the opening 25 has a wide collar 26, the width of which is shown and preferred for this purpose in the present case corresponds at least approximately to the height and / or the width of the shaft part 4. Between the collar 26 and the shaft part 4, a sealing element may be provided in order to ensure an even better sealing of the interior of the housing 3. In the case of suitable sealing elements, the collar 26 can be dispensed with, if necessary, or it can be designed to be very narrow.

In the illustrated and so far preferred door lock 1, the housing 3 and the locking lever 5 are made of plastic. The locking lever 5 has been formed in the gas internal pressure process as a completely hollow, one-piece component.

Claims (14)

1. Door fastener (1), to fasten the open door (T) of a commercial vehicle (A), particularly next to a side wall (W) of a commercial vehicle (A), with fastening lever (5) that can be adjusted between a disengaged position and an engaged position, with casing (3) which at least partly encloses said fastening lever (5) when in the disengaged position; wherein fastening lever (5), if in the engaged position, prevents the door (T) from swinging shut; wherein fastening lever (5) is joined to the casing (3) by spring mechanism (13); wherein fastening lever (5), when in the engaged position, is at least partly pulled out from the casing (3) against the restoring force of spring mechanism (13); wherein spring mechanism (13), when in the disengaged position, is at least partly arranged in the casing (3); wherein the fastening lever (5) in the engaged position is pivoted against the disengaged position and at least partly pulled out from the casing (3), is characterised in that the fastening lever (5) incorporates a shaft (4), itself incorporating a cavity, and in that the spring mechanism (13), when the fastening lever (5) is in the disengaged position, is at least partly arranged in the cavity of the shaft (4).
2. Door fastener according to claim 1, characterised in that at least the shaft (4) and the casing (3 in the disengaged position of the fastening lever (5) describe a substantially completely enclosed cavity, and in that the spring mechanism (13) is arranged in the cavity.
3. Door fastener according to claim 2, characterised in that the shaft (4) and the casing (3), when in the disengaged position, each rest against corresponding contact surfaces (20, 21).
4. Door fastener according to any one of claims 1 to 3, characterised in that the spring mechanism (13), when in the disengaged position, is substantially arranged completely inside the cavity within the fastening lever (5).
5. Door fastener according to any one of claims 1 to 4, characterised in that the spring mechanism (13), when in the disengaged position, is substantially arranged completely inside the casing (3).
6. Door fastener according to any one of claims 1 to 5, characterised in that, between the shaft (4) of the fastening lever (5) and an opening in the casing (3), a sealing element is provided in order to seal up the casing (3) against damp.
7. Door fastener according to any one of claims 1 to 6, characterised in that the casing (3) and/or the fastening lever (5) are made of synthetic material.
8. Door fastener according to any one of claims 1 to 7, characterised in that the fastening lever (5) is made of one single piece.
9. Door fastener according to any one of claims 1 to 8, characterised in that the fastening handle (5) is made as a hollow component.
10. Door fastener according to any one of claim 7 or 9, characterised in that the manufacture of fastening lever (5) is produced using the process of gas injection moulding.
11. Door fastener according to any one of claims 1 to 10, characterised in that that the casing (3) and fastening lever (5) comprise a corresponding constraining and guiding mechanism and that the constraining and guiding mechanism, when fastening lever (5) is adjusted from the engaged position to the disengaged position, keeps the fastening lever (5) to a defined movement.
12. Door fastener according to any one of claims 1 to 11, characterised in that the fastening lever (5) incorporates a hand-grip opening (10).
13. Door fastener according to any one of claims 1 to 12, characterised in that the spring mechanism (13), when the fastening lever (5) is in the engaged position, is placed under a pulling tension.
14. Door fastener according to any one of claims 1 to 13, characterised in that, a tensioning device for retensioning the spring mechanism (13) is provided.

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