DE102019110911A1 - Door arrester - Google Patents

Abstract

The invention relates to a door holder comprising a holder housing (2), a door holding rod (3) penetrating the holder housing (2), the door holding rod (3) having a first guide surface (3a), and a brake arrangement (4) comprising a first spring system (5), and a first braking member (6), the first braking member (6) being preloaded in the direction of the first guide surface (3a) of the door holding rod (3) by the first spring system (5) and in a first receptacle (2a) of the Holder housing (2) is displaceable, and wherein a first end of the first spring system (5) rests on an inner surface (6b) of an end section (6a) of the first brake member (6), and wherein a second end of the first spring system (6) opposite the first end ( 5) rests against a first stop element (10). A door arrester, which provides improved and more flexible holding torques, especially for a vehicle door, is created according to the invention in that the first stop element (10) can be displaced in the direction of the first guide surface (3a) by means of an adjusting device (17).

Description

The invention relates to a door stay according to the preamble of an independent claim. Such a door arrester comprises at least one holder housing, a door holding rod passing through the holder housing and a first brake member which is biased by a first spring system in the direction of a first guide surface of the door holding rod and can be displaced in a first receptacle of the holder housing.

Such door stops are known from the prior art in numerous variants depending on the type of car. Typically, they have a door holding rod, which has latching depressions along their surface, which make it possible for a vehicle door to be locked against its own movement in certain angular positions, or to use the door retainer as a closing aid.

US 7 076 833 B2 shows a door arrester with a holder housing which is attached to one of the body and vehicle door, a door holding rod which passes through the holder housing and a brake member which is biased by a spring system against a guide surface of the door holding rod. The brake member is axially displaceable in the holder housing. The spring system comprises an actuating lever spring which prestresses the brake member in the direction of a guide surface of the door holding rod. The brake member is pivotally arranged parallel to the guide surface of the door holding rod by means of a holding device which is arranged concentrically with the actuating lever spring. The holding device comprises a return spring which biases the brake member in the direction of a neutral position. When the vehicle door is pivoted, the brake member is pivoted out of the neutral position by the friction with the guide surface of the door holding rod. The brake member has a smaller coefficient of friction in the pivoted position than in the neutral position, which enables easier opening and closing movements of the vehicle door. A disadvantage of the door arrester shown is that the mechanism for changing the holding torques or the braking force is quite complex and is also prone to failure due to the complex spring arrangement.

DE 10 2005 044 103 A1 shows a door arrester with holder housing, comprising a brake member which is biased axially displaceable in the holder housing by a spring system against a guide surface of a door holding rod. The spring system is designed as a compression spring, so that defined holding positions of the vehicle door are realized by providing recesses along the guide surface of the door holding rod. A disadvantage of the above-mentioned door arrester is that the use of a single compression spring to pretension the brake member against a guide surface of the door holding rod often does not achieve sufficient holding torques. This applies in particular to a comfort area adjacent to a holding area with smaller opening angles of the door, in which the door can be pivoted evenly towards an open or closed position.

DE 20 2011 005 670 U1 shows a door arrester with a holder housing, the holder housing being penetrated by a door holding rod via a through opening and the door holding rod having a first guide surface. The door arrester further comprises a first brake member, which is biased by a first spring system in the direction of the first guide surface of the door holding rod and can be displaced in a first receptacle of the holder housing, the spring system comprising a first spring part and second spring part. The one of the first spring part and the second spring part radially surrounds the other of the first spring part and the second spring part. The second spring part is designed as a body made of elastomer material, which has a non-linear load deformation curve. This has the effect that the effective spring constant of the spring system is increased over at least one section of the first guide surface that is higher than a lower section. A disadvantage of the door arrester shown is that when the elastic body is compressed in particular, it expands radially and can interfere with the helical spring surrounding it. In particular, there can be a permanent change in the elastic properties of the helical spring, so that increased holding moments of the door arrester cannot be guaranteed over a longer period of time.

EP 2 808 473 A1 shows a door arrester, the door arrester comprising a holder housing, a door holding rod passing through the holder housing having a first guide surface. The door arrester also includes one of one first spring system biased in the direction of the first guide surface s1 of the door holding rod and displaceable in a first receptacle of the holder housing. The spring system is designed with progressive rigidity, so that the effective spring constant of the spring system 6a is enlarged over at least a portion of the first guide surface that is higher than a lower portion.

DE 10 2007 023 110 A1 shows a door arrester, comprising a holder housing, a door holding rod passing through the holder housing, the door holding rod having a first guide surface. The door arrester further comprises a first brake member, which is biased by a first spring system in the direction of the first guide surface of the door holding rod and can be displaced in a first receptacle of the holder housing, the first spring system being formed by a helical spring.

DE 10 2010 019 621 A1 shows a door arrester for a vehicle door with a holder housing, wherein the holder housing is penetrated by a door holding rod and the door holding rod has a first guide surface. The door arrester further comprises a first brake member that is biased by a first spring system in the direction of the first guide surface of the door holding rod and displaceable in a first receptacle of the holder housing, the spring system as a helical spring on one side of the door holding rod and the spring system as an elastomer body on an opposite side of the door holding rod is trained. A disadvantage of the door arrester shown is that by providing two different spring systems on each side of the door holding rod, an asymmetrical braking torque acts on the door holding rod, so that the braking force which is exerted on the door holding rod has a component acting perpendicular to the guide surface.

DE 26 58 353 A1 shows a load-dependent brake force regulator with a hollow piston, which has holes on its outer wall, which are connected to a blind hole. A spring is arranged within the blind bore, which prestresses a valve body in the direction of a valve seat formed within the hollow piston. A spring housing is provided below the hollow piston, which has a spring system between two spring plates, the spring system having a helical compression spring which is clamped between the spring plates. The helical compression spring prestresses the hollow piston in the direction of the prestress of the valve body. In a second exemplary embodiment, the spring system is formed by two helical springs, the first helical spring radially rotating around the second helical spring. The first coil spring is designed with a constant pitch, whereas the second coil spring, which in the relaxed state has a smaller axial extension than the first coil spring, has a progressive pitch.

It is the object of the invention to create a door arrester which provides improved and more flexible holding moments, in particular for a vehicle door.

This object is achieved according to the invention by a door arrester with the features of an independent claim.

According to one aspect of the invention, a door arrester is provided, comprising a holder housing, a door holding rod passing through the holder housing and a brake arrangement. The door holding rod has a first guide surface. The brake arrangement comprises a first spring system and a first brake member, the first brake member being able to be pretensioned in the direction of the first guide surface of the door holding rod by the spring system and being displaceable in a first receptacle of the holder housing. The door arrester according to the invention is characterized in that the brake arrangement comprises a second brake member which can be pretensioned in the direction of the first guide surface of the door holding rod by the first spring system and can be displaced in the first receptacle of the holder housing. The provision of a second brake element advantageously creates the possibility of controlling and adapting the door brake function as required by means of more flexible holding torques.

In a preferred embodiment it is provided that the first brake element surrounds the second brake element at least in sections. This advantageously creates the possibility of guiding the second brake member by means of the first brake member and thus ensuring that the first brake member has approximately the same orientation relative to the guide surface as the second brake member.

The first brake member is particularly preferably arranged concentrically with the second brake member. This advantageously ensures that the first brake member and the second brake member can be moved together symmetrically along the guide surface of the door holding rod, so that a precise control of the holding moments is made possible by an appropriate design of the door holding rod. Furthermore, the possibility is advantageously created to use rotationally symmetrical spring systems, which can be produced easily and in a standardized manner, for example in the form of coil springs.

The first spring system advantageously comprises a first spring part and a second spring part. As a result, in particular the first brake member and the second brake member can each be independently biased in the direction of the first guide surface of the door holding rod or the bias of one of the brake members can be activated while the bias of the other brake member is deactivated.

In a preferred development it is provided that the first spring part radially rotates around the second spring part. This advantageously results in the possibility of designing the height of the spring system while saving space the aforementioned advantages with regard to the flexible prestressing of the brake members are retained.

The first spring part particularly preferably prestresses the first brake member in the direction of the first guide surface of the door holding rod. In an advantageous development it is further provided that the second spring part prestresses the second brake member in the direction of the first guide surface of the door holding rod. In this way, independent actuations of the pretensioning force for the first brake element and the second brake element can advantageously take place.

In an advantageous embodiment, it is provided that a first end of the first spring system bears against at least one of an inner surface of an end section of the first brake member and an inner surface of an end section of the second brake member. It is also expediently provided that a second end of the first spring system opposite the first end rests on a first stop element. In this way, the spring system is advantageously arranged between the brake members and the stop element, so that a corresponding preload can act on the brake members.

The first stop element is preferably arranged in the first receptacle of the holder housing. In one embodiment, the first stop element is arranged fixedly in the receptacle of the holder housing, so that the second end of the first spring system always lies at the same point relative to the holder housing.

In an advantageous embodiment, it is provided that the first brake member comprises an end section facing the guide surface, the end section having an inner surface facing away from the guide surface, a first inner hollow cylinder surrounded by a first outer hollow cylinder section being arranged on the inner surface. Such a design of the brake member advantageously provides the possibility of better guiding spring elements, which pretension the brake member in the direction of the guide surface of the door holding rod, and thus ensure that the brake member does not tilt during operation or the pretensioning force is always in the direction of the guide surface the door support rod is directed.

In a particularly preferred embodiment, the second brake member can be displaced, at least partially, in the first inner hollow cylinder of the first brake member. This advantageously results in a particularly space-saving design of the brake arrangement and also ensures that the first brake member and the second brake member can be displaced relative to one another essentially only in the direction of the first guide surface and not parallel to the guide surface. The advantages already mentioned above for the first brake member with regard to guidance and the preload force of the preloading spring system result accordingly.

In an advantageous development it is provided that the first inner hollow cylinder of the first brake member concentrically surrounds the second outer hollow cylinder section of the second brake member. This advantageously realizes, on the one hand, a concentric arrangement of the first and the second braking member and, on the other hand, that the first braking member and the second braking member can essentially only be displaced in the direction of the guide surface.

The door holding rod expediently has a second guide surface facing away from the first guide surface. The brake arrangement preferably further comprises a third brake member which can be pretensioned in the direction of the second guide surface of the door holding rod by a second spring system and can be displaced in a second receptacle of the holder housing. In a preferred development it is provided that the brake arrangement comprises a fourth brake member which can be pretensioned in the direction of the second guide surface of the door holding rod by the second spring system and can be displaced in the second receptacle of the holder housing. The total holding torque can advantageously be increased in this way, the total force acting on the door holding rod, which is caused by the pretensioning of the brake members in a direction perpendicular to the opposing first and second guide surfaces, being kept to a minimum.

In an expedient development, it is provided that a first end of the second spring system bears against at least one of an inner surface of an end section of the third brake member and an inner surface of an end section of the fourth brake member. It is particularly preferably further provided that a second end of the second spring system opposite the first end bears against a stop element. The stop element is expediently arranged in the second receptacle of the holder housing. The stop element is particularly preferably arranged mirror-symmetrically to the holding rod at the same distance as the first stop element to the holding rod.

The second spring system is particularly preferably configured in exactly the same way as the first spring system. On the one hand, an increase in the friction of the door arrester is advantageously achieved and, on the other hand, undesirable total moments perpendicular to the longitudinal axis of the door holding rod are avoided. In particular due to the increased spring constants of the Otherwise there would be a risk of spring systems causing the door support rod to deform.

According to a further aspect of the invention, a door arrester is provided, comprising a holder housing, a door holding rod passing through the holder housing, the door holding rod having a first guide surface, and a brake arrangement. The brake arrangement comprises a first spring system and a first brake member, the first brake member being biased in the direction of the first guide surface of the door holding rod by the spring system and being displaceable in a first receptacle of the holding housing. A first end of the first spring system bears against an inner surface of an end section of the first brake member and a second end of the first spring system opposite the first end bears against a first stop element. The door arrester according to the invention is characterized in that the first stop element can be displaced in the direction of the first guide surface by means of an adjusting device. This advantageously creates the possibility of adjusting the basic level of the pretension of the spring system and thus enabling more flexible provision of holding torques. In addition, changes in the spring constants of the spring system that occur over time can be compensated for, so that a complex exchange of the components present in the spring system is eliminated.

Further advantages and features result from the following description of a preferred exemplary embodiment and from the dependent claims.

• 1 zeigt ein bevorzugtes Ausführungsbeispiel eines Türfeststellers in einer Perspektivansicht.
• 2 zeigt das in 1 gezeigte Ausführungsbeispiel eines Türfeststellers in einer längs entlang der Türhaltestange aufgeschnittenen Ansicht
• 3 zeigt das erste Bremsglied und das zweite Bremsglied in einer vergrößerte Perspektivansicht.
• 4 zeigt eine entlang der Linie B-B aus 2 aufgeschnittenen Ansicht des bevorzugten Ausführungsbeispiels eines erfindungsgemäßen Türfeststellers.

The invention is explained in more detail below with reference to the accompanying drawings using a preferred embodiment of the invention.

• 1 shows a preferred embodiment of a door stay in a perspective view.
• 2nd shows that in 1 Shown embodiment of a door arrester in a view cut open longitudinally along the door holding rod
• 3rd shows the first brake member and the second brake member in an enlarged perspective view.
• 4th shows one along the line BB 2nd cut-away view of the preferred embodiment of a door arrester according to the invention.

1 shows a preferred embodiment of a door arrester 1 in a perspective view. The door arrester 1 includes a holder housing 2nd and a door handle 3rd which the holder housing 2nd enforced. The door support bar 3rd has a guide surface on an upper side 3a and a guide surface on an underside opposite the upper side 3b on.

On an upper side of the holder housing 2nd is an adjustment device 17th arranged, which serves the displacement of a stop element, not shown here. The adjustment device 17th includes an engine 18th , which is designed as a spindle drive. On the side of the holder housing 2nd is a first spindle rod 19th and a second spindle rod (not visible here) rotatably arranged, each having a gear wheel at an upper end 21 , 22 have which are in engagement with the spindle drive 18th stand and so a rotation of the spindle rod 19th can drive because the gears 21 , 22 non-rotatable with one spindle rod each 19th are connected.

2nd shows that in 1 Shown embodiment of a door arrester in a lengthways along the door support rod 3rd cut view. In this view is the holder housing 2nd easy to see, being on the top of the holder housing 2nd the motor housing 18a the adjustment device 17th is firmly arranged. In the engine case 18a is the engine 18th arranged, the output shaft with a motor spindle rod 18b is connected, the external toothing with the in 1 shown gears 21 , 22 the spindle rods 19th the adjustment device 17th is engaged.

Next is the door handle 3rd with the first guide surface 3a and the second weakness in leadership 3b shown which is the holder housing 2nd enforced. The holder housing 2nd shows a first shot 2a and a second shot 2 B on which is mirror symmetrical to the door support bar 3rd are arranged.

In the holder housing 2nd is a brake assembly 4th arranged, being in the first shot 2a of the holder housing 2nd a first spring system 5 and in the second shot 2 B a second spring system 11 is arranged. The brake assembly 4th further comprises a first brake member 6 which is due to the spring system 5 towards the first guide surface 3a is preloaded so that friction can cause a braking effect, which causes the holder housing to shift 2nd brakes along the door support bar. The brake arrangement further comprises 4th a second brake link 7 , which is concentric with the first brake member 6 arranged and partially surrounded by this. Both brake links 6 , 7 are in the holder housing 2nd or in the first shot 2a of the holder housing 2nd towards the first guide surface 3a relocatable.

As in the in 2nd The first brake member has a clearly visible cut-open view 6 an inner surface 6b on which there is a first spring part designed as a coil spring 8th supports, which is part of the first spring system 5 is. As a result, the first brake member 6 from the first spring part 8th towards the guide surface 3a the door handle 3rd biased.

The first spring system 5 further comprises a second spring part designed as a coil spring 9 which has a first end on an inner surface 7b of the second brake link 7 supports, so that a bias of the second brake member in the direction of the first guide surface 3a the door support bar is done. The first spring part 8th supports itself with one of the inner surface 6b of the first brake link 6 opposite end on a first stop element 10th so that the spring part 8th between the stop element 10th and the first brake link 6 is clamped and so a force on the first brake member 6 works. The first stop element 10th is, as explained in more detail below, in the first shot 2 B relocatable so that the preload force on the first brake link 6 is adjustable.

The first brake link 6 has an outer hollow cylinder 6c and an inner hollow cylinder 6d on which are concentric with each other from the inner surface 6b in the first shot 2a protrude. The first spring part is thus advantageous 8th through the outer hollow cylinder 6c or the inner hollow cylinder 6d guided, so that it is ensured that the first spring part 8th vertically in the first shot 2a remains arranged.

The second brake link 7 has one of the guide surface 3a facing end section 7a and also an outer hollow cylinder 7c and an inner hollow cylinder 7d on which is concentric with each other from that of the guide surface 3a facing inner surface 7b of the second brake link 7 in the first shot 2a protrude. Analogous to the first spring part 8th becomes a guide for the second spring part 9 ensures that the second spring part 9 vertically in the first shot 2a remains arranged and cannot bend or slip during operation.

The second spring part 9 supports itself with one of the inner surface 7b of the second brake link 7 opposite end on a second stop element 11 so that the second spring part 9 between the second stop element 11 and the second brake member 7 is clamped and so a force on the second brake member 6 works. The first stop element 10th is designed as a stop plate, which has a recess in its center 10a has, in which the second stop element designed as a guide pin 11 is used. The guide pin 11 points to the first stop element 10th opposite end a taper 11a so that a stop surface is created by the step thus formed 11 b for the second spring part 9 is formed.

In the second shot 2 B of the holder housing 2nd is a second spring system 12th provided which is a third brake member 13 and a fourth brake link 14 analogous to the first spring system 5 against the second guide surface 3b the door handle 3rd preloaded. The third brake link 13 is identical to the first brake member 6 and the fourth brake link 14 identical to the second brake element 7 built up.

3rd shows the first brake link 6 and the second brake link 7 in an enlarged perspective view. As can be seen here, the first brake link points 6 an end section 6a and the second brake link 7 an end section 7a on which, when installed, with the first guide surface 3a the door handle 3rd are in contact and thus develop a braking effect. It can also be seen that the inner diameter of the inner hollow cylinder 6d of the first brake link 6 is larger than the outer diameter of the outer hollow cylinder 7d of the second brake link 7 so that the second brake link 7 with its outer hollow cylinder 7d in the inner hollow cylinder 6d of the first brake link 6 can be introduced and so a joint tour is realized.

Furthermore, in 3rd to recognize that the second brake link 7 two opposite radial projections 7e which is complementary to corresponding recesses 6e on the underside of the outer hollow cylinder 6c of the first brake link 6 are formed so that the first brake member 6 not relative to the second brake link 7 can be twisted.

4th shows one along the line BB 2nd cut-away view of the preferred embodiment of a door stay according to the invention. In this view is the first spindle rod 19th and the second spindle rod 20 to see which side of the holder housing 2nd are rotatably arranged. It can also be seen that the first stop element designed as a stop plate 10th two internal threads arranged in radially opposite outer sides 10c which has a first external thread 19a the first spindle rod 19th or a first external thread 20a the second spindle rod 20 is engaged so that when the spindle rod rotates 19th , 20 a displacement of the stop element 10th towards the first guide surface 3a the door handle 3rd he follows. The rotation of the Spindle rod 19th , 20 takes place, as already explained above, via the spindle drive 18th . The spindle drive can 18th either be operated manually or depending on the operating parameters of the vehicle or when a rear-end collision is detected, so that the holding torque of the door arrester 1 can be adjusted automatically depending on external circumstances. For example, it can be provided that the adjusting device is moved in the event of a rear-end collision in such a way that the spring system is deactivated so that the vehicle door can be opened more easily.

The first spindle rod accordingly 19th a second external thread 19b and the second spindle rod 20 a second external thread 20b on which for the analog adjustment of the biasing force of the second spring system 12th in the second shot 2 B serve. Due to the relative to the door handle 3rd Mirror-symmetrical arrangement of the first and second external threads is advantageously ensured that the stop elements are correspondingly mirror-symmetrically displaced.

The invention was explained above on the basis of a preferred exemplary embodiment of a door arrester, in which the spring system comprised two spring parts which are arranged concentrically to one another. It goes without saying that spring systems with only one or more than two spring parts can also be used.

The invention of a preferred exemplary embodiment was explained above, in which the adjusting device comprises two spindle rods arranged laterally on the holder housing, which displaces the stop elements in the direction of the guide surface of the door retaining rod. It goes without saying that the adjusting device can also comprise only one spindle rod, which is arranged concentrically in the holder housing, analogous to an arrangement of the connecting bolt for connecting two separate housing parts of the holder housing in the patent application DE 10 2018 119 651.2 the applicant.

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• US 7076833 B2 [0003]
• DE 102005044103 A1 [0004]
• DE 202011005670 U1 [0005]
• EP 2808473 A1 [0006]
• DE 102007023110 A1 [0007]
• DE 102010019621 A1 [0008]
• DE 2658353 A1 [0009]
• DE 102018119651 [0045]

Claims (10)

Door arrester, comprising a holder housing (2), a door holding rod (3) passing through the holder housing (2), the door holding rod (3) having a first guide surface (3a), and a brake arrangement (4) comprising a first spring system (5), and a first brake member (6), the first brake member (6) being biased in the direction of the first guide surface (3a) of the door holding rod (3) by the spring system (5) and displaceable in a first receptacle (2a) of the holder housing (2) and wherein a first end of the first spring system (5) abuts an inner surface (6b) of an end section (6a) of the first brake member (6), and wherein a second end of the first spring system (5) opposite the first end bears against a first Stop element (10) abuts, characterized in that the first stop element (10) can be displaced in the direction of the first guide surface (3a) by means of an adjusting device (17). Door arrester after Claim 1 , characterized in that the first stop element (10) is designed as a stop plate which has a recess (10a) in its center. Door arrester after Claim 2 , characterized in that a second stop element (11) designed as a guide pin is inserted in the recess (10a) of the first stop element (10). Door arrester after Claim 3 , characterized in that the second stop element (11) can be displaced together with the first stop element (10) by means of the adjusting device (17) in the direction of the first guide surface (3a). Door arrester according to one of the preceding claims, characterized in that the adjusting device (17) comprises a spindle drive (18). Door arrester according to one of the preceding claims, characterized in that a first spindle rod (19) is arranged on the side of the holder housing (2). Door arrester after Claim 6 , characterized in that the first spindle rod has a first external thread (19a). Door arrester after Claim 7 , characterized in that the first stop element (10) has two internal threads (10c) arranged in radially opposite outer sides. Door arrester after Claim 8 , characterized in that a second spindle rod (20) is arranged on the side of the holder housing (2). Door arrester after Claim 9 , characterized in that a first internal thread (10c) engages with a first external thread (19a) of the first spindle rod (19) and a second internal thread (10c) with a first external thread (20a) of the second spindle rod (20).

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