DE3940061C2 - Door lock - Google Patents

Description

The invention relates to a plastic door lock, which is mounted on a door or the like in an installation opening, where with on the inside of the door a housing with a through egg ne spring biased in the closing direction bolt part arranged is net and on the outside of the door, a back wall having recessed grip is provided, in which an actuator supply element is pivotally mounted, with a push lever is in operative connection with the locking part such that when pivoting the actuating element of the locking part against the spring preload is withdrawn in the opening direction and wherein the recessed grip is connected to the housing via a connector elements when installing the door lock in the one construction opening is connected.

Such door locks, which are also particularly with Cam Ping vehicles of all types are used as so-called called "snap locks" generally known, the Actuator in many cases through the handle bar the recessed grip is formed so that when pulling and opening the door or the like. At the same time the bolt is pushed back.

In known door locks of this type, as they are on the market are widely available, find a relatively large Number of parts use. That's how it is, for example Actuator on a separately insertable axis stored in the recessed grip. The latch and the spring will be also usually manufactured as individual parts and in the  Lock housing used. To connect the recessed grip, which furthermore a separate one and also as a single contains part to be assembled, usually egg ne number of screws used, which from the housing screwed into corresponding holes in the recessed grip become. Due to the large number of individual parts and provides the type of connection between the recessed grip and the housing the assembly and installation of such known door locks is a comparatively labor-intensive process In addition, both the production and the warehousing of the necessary individual parts cumbersome.

With different types of door locks, such as Three-bolt locks, it is known from DE-OS 26 05 427, the lock housing from the many individual parts Rear of the door directly into the installation opening press and there with a harpoon-shaped Mit to fasten the telegraph. The center pin serves here at the same time as a key guide, so that on the front the door only had a corresponding frame is consolidated.

A caravan lock is also known from DE 75 23 149 U1, in which the castle consists of two main parts, which again made from a large number of individual parts are. One of the main parts is on the inside of the door arranged while the counterpart, which the press Kerlagung forms on the opposite side of the door is left. The two parts are in a cylindrical and comparatively precisely fitting entrance opening other connected that the mantle of the inner end of the egg Cylinder housing attached with a twist grip Has longitudinal ribs, which in corresponding formations engage the opposite part of the lock. This is it is possible to have such a lock in doors of different wall build in strength.  

A locking device for doors is known from DE 75 17 403 U1, which has two main parts, namely two lock members which can be connected to one another and lie opposite one another and are connected to the door leaf. The first lock member carries a locking bolt which can be reset against spring loading by a first reset handle and can be locked in its locking position by a locking handle. The second lock member has a second reset handle which engages on the locking bolt and a lock comprising a lock rotor which can be coupled to the lock handle under the load of a limited freedom of rotation. A coupling shaft 30 penetrates the door leaf, connects the locking handle to the closing rotor and has a stop area and a free area in a lengthwise region crossing the return path of the locking bolt. This known locking device is of complex construction and consists of a large number of details.

A latch lock is known from DE 23 25 627 C2, which consists of a lock housing and a trap that is guided in a dovetail shape in the lock housing and has a backdrop-like breakthrough by one Profile mandrel of a handle is penetrated. The trap is pretensioned by compression springs in the closed position. At Rotation of the handle affects straight surfaces of the opening and the profile mandrel against each other, whereby the trap against the effect of the compression springs withdrawn from the closed position becomes. One protrudes into the opening of the trap Nose into it, when the straight surfaces of the Breakthrough and the profile mandrel in a central groove of the Profile mandrel protrudes and reaches behind its free end. Only if the trap is further pushed back over hers  Open position also gives the free end to the blocked one Profile mandrel free for insertion and removal. This too Latch lock has a relatively large number of individual parts. His Assembly and its installation are relatively difficult.

Starting from a door lock of the type mentioned is the object of the invention, this from possible to produce a few individual parts and thus the assembly and the installation of such a door lock considerably lighten without its functionality and under also the ability to work in doors of various strengths to be installed, is reduced.

This object is achieved in that the Housing with the spring and the bolt part as the first piece ger plastic part is formed and that the recessed grip with the rear wall of the actuator and the push lever is designed as a one-piece second plastic part.

It is obvious that through this type of training complete door lock consists of two individual parts, which easy to assemble into a complete lock are cash.

In a preferred embodiment according to the invention here the connecting elements as complementarily shaped positive locking devices on the housing and the handle recess against each other in the installed position of the door lock overlying surfaces of the housing and the recessed grip integrally molded. This will result in the installation of the door lock ses achieved that again no loose parts to use are, but the door lock according to the invention by simply squeezing over the installation opening builds.

In particular, the invention can be developed by that the spring on her, the connection with the bolt part ge opposite end is provided with a support plate, and that the support plate over a film hinge with such a Wall of the housing is connected that the spring with the Bolt part for mounting in the interior of the housing is pivotable. In other words, it becomes functional locked part of the door lock during assembly  made that the compression of the plastic spring se together with the latch part simply into the housing works.

The guide for the latch part is preferably by the Bo the outgoing wall sections of the housing formed. Two This is folded in when the latch is installed.

In a particularly preferred embodiment of the invention it is provided that the rear wall with a side wall of the Recessed grip is connected via a film hinge such that the rear wall for mounting on the lower edges of the side walls the recessed grip is pivotable. This will also Installation of the recessed grip by a simple swivel movement the back wall allows.

It is also preferred that the rear wall on the lower edges the recessed grip can be fixed, with a preferred Embodiment according to the invention is provided that the Snap in the rear wall using the locking strips on the lower edges is cash. This ensures that the recessed grip already designed to be easy to handle during assembly is and it is not necessary to mount the back panel to hold on in any way.

In a particularly preferred embodiment according to the Er is the actuator with the recessed grip through a hinge connected by a wall thickness line-shaped weakening notch is formed.

In the previously described embodiment according to the invention is obvious that by connecting all either movable during assembly or in use Individual parts via share formed by the plastic itself kidney a very simple design for the manufac required forms is possible because both the handle trough as well as the housing with its functional elements in stretched, exploded position made of plastic ge  can be sprayed, so that complicated undercuts can fall away. The more complex structure of the two parts le is made by swiveling the corresponding sections aims.

According to this basic idea, it is further preferred that Active connection between the actuating element and the bolt partly by the engagement of the free end in a recess to be made in the latch part in a match. This makes one on the one hand achieved a simple design and on the other hand installation is also made easier by a separate Ver Binding of the thrust lever with the locking part is not necessary is.

In a particularly preferred embodiment according to the Er The invention also provides that the connecting elements te forming locking devices from a number of to the Ge molded spring tongues with sawtooth-shaped teeth and corresponding counter serrations on the recessed grip stand.

The teeth are preferably on the middle of the Housing-facing side of the spring tongues arranged and the Counter serrations are on the outside of the side walls of the Grip recess shaped.

Furthermore, it is particularly preferred that the Federzun opposite each other and spaced inwards are arranged opposite two side walls of the housing.

With particular advantage are on each of the two sides tenwand at least two, preferably four spring tongues seen.

In particular, the invention can be developed by that with paired spring tongues the Ver toothing of a spring tongue against the toothing of the neighboring beard spring tongue by half the tooth pitch in the longitudinal direction  the spring tongue is offset.

This is achieved, for example, when the division of the Toothings and the counter toothing 1 mm is that To lerances of the thickness of the door or the like in steps of 0.5 mm can be compensated, in which case a Federzun a pair engages with the counter teeth on the Grip recess stands. As a result, despite the minimal gradation the gears correspondingly stronger in tolerance compensation be formed so that a secure hold of the housing and handle trough against each other is guaranteed.

To facilitate assembly, it is also preferred mating guide on the recessed grip and the housing tap and provide appropriate guide holes, which make sure the two parts are in the correct orientation tion towards each other when they are over the installation opening of a door or the like. The installation takes place by simply pressing the two parts together.

In the following the invention with reference to one in the drawing gene exemplary embodiment illustrated in more detail tert. It shows

Fig. 1 is a front view of a door or the like with an OF INVENTION to the invention door lock..;

Fig. 2 is a schematic sectional view taken along the line II-II of Fig. 1;

Figure 3 is a view of the door lock in the door in the direction of arrow III of Fig. 1.

Fig. 4 is a sectional view taken along the line IV-IV of Fig. 1;

Figure 5 is a plan view of the open housing part in the plane VV of Fig. 4.

Figure 6 is a plan view of the grip in a state such as is present after injection molding.

FIG. 7 shows a bottom view of the recessed grip according to FIG. 6;

Fig. 8 is a plan view of the case in a state as it leaves the injection molding machine;

Fig. 9 is a sectional view taken along the line IX-IX of Fig. 8;

Fig. 10 is a sectional view taken along line XX of Fig. 8;

Fig. 11 is a view in the direction of arrow XI of Fig. 9;

Fig. 12 is a sectional view taken along the line XII-XII in Fig. 6;

FIG. 13 is approximately 10X enlarged scale, the detail XIII of Fig. 12;

Fig. 14 is a partially broken side view in the direction of arrow XIV of Fig. 6;

Fig. 15 shows the detail XV of Fig. 14 in about 10 times enlarged scale and

Fig. 16, the views A and B of the spring tongues in the embodiment shown in Fig. 9 by arrows A and B directions, also in about 10-fold larger scale.

The illustrated in the drawings, the door lock 1, which is made of plastic, od in FIGS. 1 to 5 of egg ner door 2. Like. Anschaulicht ver installed over a mounting opening 3. The door lock 1 bridges the inside 4 of the door and its outside 5 through the installation opening 3 .

On the inside 4 of the door 2 , a housing 6 is arranged, which contains a bolt part 8 biased by a spring 7 in the closing direction, which projects laterally from the housing 6 in the biased closed position.

On the front, ie on the outside 5 of the door 2 , there is a recessed grip 9 , which is partially closed by a rear wall 10 . An actuating element 11 is pivotally mounted in the recessed grip 9 and is connected to the locking part 8 via an integrally molded thrust lever 12 .

The arrangement is such that the actuating element 11 practically forms the handle of the recessed grip 9 , so that when the door is opened the actuating element 11 is first pivoted outward and thereby moves the locking part 8 into the housing 6 via the push lever 12 so that the door can be opened.

The two main parts of the door lock, ie the housing 6 and the recessed grip 9 , are connected to one another via connecting elements generally denoted by 13 and cover the installation opening 3 on both sides.

According to the invention, the housing 6 is formed together with the spring 7 and the locking part 8 as an integral plastic part 14 .

Likewise, the recessed grip 9 forms, together with the rear wall 10 and the actuating element 11 , to which the thrust lever 12 is formed, an integral second plastic part 15 , which in the Darge shown in FIGS . 1 to 5 in detail installation position by the connecting elements 13 mitein other are connected.

As shown, the connecting elements 13 are designed as complementarily shaped, form-fitting latching devices 16 , which are also integrally formed on the mutually opposite surfaces 17 and 18 of the housing 6 or the recessed grip 9 .

In the following, reference will first be made to FIGS. 6 to 16, by means of which the preferred initial shape of the housing 6 and the recessed grip 9 are described in more detail as they are designed to be as simple as possible by injection molding.

The housing 6 , which is shown in more detail in FIGS . 8 to 11 and 16, is integrally formed with the connecting elements 13 , the spring 7 and the locking part 8 . The spring 7 is integrally formed with one end 19 on the locking part 8 and has at its opposite end 20 a likewise integrally molded support plate 21 .

The housing 6 has side walls 22, 23, 24 and 25 and a bottom 26 , which together close an interior space 27 , which in the illustrated embodiment has the shape of a bowl.

The support plate 21 at the end 20 of the spring 7 is connected via a film hinge 28 to the side wall 23 of the housing 6 , wherein, as can be seen in particular from FIG. 9, the spring 7 with the bolt part 8 attached to it for mounting the door lock 1 can be pivoted into the interior 27 of the housing 6 over the side wall 23 , in order then to assume the position illustrated in FIGS . 4 and 5 together with the locking part 8 . At the same time, the spring 7 is compressed.

As shown in Fig. 4, the locking part 8 with a molded on its underside stop 56 behind a molded on the bottom 26 of the housing 6 stop 57 festge. After this simple pivoting movement of the spring 7 and the bolt part 8 unit into the interior space 27 of the housing, the part forming the actual closing device of the door lock 1 is already fully functional and only needs to be connected to the recessed grip 9 .

The guide 29 for the locking part 8 is in this case formed by upstanding wall sections 30, 31, 32 and 33 extending from the bottom 26 of the housing 6 , of which the wall sections 30 and 31 take over the lateral guidance of the locking part 8 , while the wall sections 32 and 33 form the guides, on which the locking part 8 slides with its rear side.

The in their state, as it leaves the injection molding machine, in FIGS. 6, 7 and in details 12 to 15 illustrat te recessed grip 9 has side walls 34, 35, 36 and 37 . On the side wall 38 of the recessed grip 9 , a film hinge 38 is formed, which is greatly enlarged in FIG. 13. About the film hinge 38, the rear wall 10 is likewise connected in one piece with the handle recess 9 and may for mounting the handle recess 9 against the lower edges 39, 40, 41 and 42 of the side walls 34, 35, are pivoted 36 and 37th

After this pivoting operation of the rear wall 10 , this can be fixed before given to the lower edges 39, 40, 41 and 42 , wherein in the illustrated embodiment for this purpose locking bars 43 are provided on which the rear wall 10 can snap.

The actuating element 11 is also connected in one piece to the recessed grip 9 by a hinge 44 , which is similar to a film hinge, but is made stronger because of the frequency of actuation.

As illustrated, the hinge 44 is formed by a wall thickness of the recessed grip 9 at this point weakening notch 45 . The notch 45 in this case has Zvi rule its both side surfaces 58 and 59 form an angle in the order of about 90 °, so that these Seitenflä surfaces 58 and 59 at the same time a limitation for the pivoting movement of the actuating element 11 constitute.

As already mentioned above, the operative connection between the actuating element 11 and the locking part 8 is Herge that the free end 46 of the push lever 12 in a recess 47 formed on the locking part 8 from above or from the outside 5 of the door 2 in Match fit intervenes. Consequently, when assembling the recessed grip 9 with the Ge housing part 6, the drive of the locking part 8 via the push lever 12 is simultaneously functional.

As can be seen from FIGS. 6 to 16, due to the described and illustrated spatial design of the individual parts of the door lock 1, these can be produced with minimal molding costs, since they can be injection molded practically in an expanded arrangement and with minimal parting planes.

As further shown, the locking elements 16 forming the connecting elements 13 consist of a number of spring tongues 47 and 48 formed on the housing 6 , which on their side pointing toward the center of the housing 6 with sawtooth-like teeth 49 and illustrated in FIG. 6 on an enlarged scale 50 are formed.

The associated counter teeth 51 and 52 are formed on the outside of the side walls 36 and 39 of the recessed grip and are illustrated in a greatly enlarged scale in FIG. 15.

In the illustrated embodiment, the teeth 49 and 50 and the counter teeth 51 and 52 on the recessed grip 9 have a pitch on the order of 1 mm.

The spring tongues 47 and 48 are also integrally formed on opposite sides at a distance from the associated side walls 22 and 24 of the housing 6 .

At each of the two side walls 22 and 24 are located 47 and 48, at least two such spring tongues, and such in the preferred embodiment, four spring tongues 47 and 48 are provided.

Each spring tongue 47 forms a pair with a spring tongue 48 , the spring tongues 47 and 48 therefore being arranged side by side in pairs.

Here, the toothing 49 of one spring tongue 47 , as illustrated in FIG. 16, is offset from the toothing 50 of the adjacent spring tongue 48 by half a tooth pitch in the longitudinal direction of the spring tongues.

This arrangement ensures that when, for example, as shown, the pitch of the teeth 47 and 48 and the counter teeth 51 and 52 is 1 mm for strength reasons, a gradation of the distance between the recessed grip 9 and the housing 6 in steps of 0.5 mm is possible, only one of the spring tongues 47 or 48 being in engagement with the corresponding counter-toothing 51, 52 , as indicated in FIG. 2.

As further shown in the drawings, 9 guide devices are additionally provided on the housing 6 and the recessed grip, which facilitate the assembly of the two parts. In the illustrated embodiment, this is a guide pin 53 , which can be inserted into a guide bore 54 .

For the sake of completeness, reference is made to a preferred detail with regard to the design of the spring 7 . As shown in FIGS. 4 and 5, the spring 7 is preferably formed by a corrugated preformed wall section 55 which has the same height as the locking part 8 . As a result, on the one hand the spring force possible in the available space is increased and on the other hand a safe guidance of the locking part 8 is supported by the wall section 55 , which forms the spring 7 , is also guided by the guide 29 which through the wall sections 30, 31, 32nd and 33 is formed.

Claims (16)

1. Plastic door lock, which is mounted on a door or the like in an installation opening, on the inside of the door a housing is arranged with a bolt biased by a spring in the closing direction and on the outside of the door, a Back wall having Griffmul de is provided, in which an actuating element is pivotally mounted ver, which is in operative connection with a push lever with the locking part in such a way that when the actuating element is pivoted, the locking part is retracted against the spring in the opening direction and furthermore the recessed grip with the housing is connected to Verbindungsele elements during the assembly of the door lock in the installation opening, characterized in that the housing ( 6 ) with the spring ( 7 ) and the locking part ( 8 ) is formed as a first one-piece plastic part ( 14 ) and that the recessed grip ( 9 ) with the rear wall ( 10 ), the actuating element ( 11 ) and de m thrust lever ( 12 ) is designed as a one-piece second plastic part. 2. Door lock according to claim 1, characterized in that the connecting elements ( 13 ) as a complementarily shaped positive locking devices ( 16 ) on the housing ( 6 ) and the recessed grip ( 9 ) on mutually opposite surfaces in the installed position of the door lock ( 1 ) ( 17, 18 ) of the housing ( 6 ) and the recessed grip ( 9 ) are formed in one piece. 3. Door lock according to claim 1 or 2, characterized in that the spring ( 7 ) at its connection with the locking part ( 8 ) opposite end ( 20 ) is provided with a support plate ( 21 ), and that the support plate ( 21 ) over a film hinge ( 28 ) is connected to a wall ( 23 ) of the housing ( 6 ) in such a way that the spring ( 7 ) with the locking part ( 8 ) for mounting in the interior ( 27 ) of the housing ( 6 ) can be pivoted into the bar. 4. Door lock according to one of the preceding claims, characterized in that the guide for the bolt part ( 8 ) by the bottom ( 26 ) of the housing ( 6 ) outgoing wall sections ( 30, 31, 32, 33 ) is formed. 5. Door lock according to one of the preceding claims, characterized in that the rear wall ( 10 ) with a side wall ( 37 ) of the recessed grip ( 9 ) via a film hinge ( 38 ) is connected such that the rear wall ( 10 ) for mounting on the lower edges ( 39, 40, 41, 42 ) of the side walls ( 34, 35, 36, 37 ) is pivotable. 6. Door lock according to claim 5, characterized in that the rear wall ( 10 ) on the lower edges ( 39, 40, 41, 42 ) of the side walls ( 34, 35, 36, 37 ) can be fixed. 7. Door lock according to claim 5 or 6, characterized in that the rear wall ( 10 ) by means of locking strips ( 43 ) on the lower edges ( 39, 40, 41, 42 ) can be snapped. 8. Door lock according to one of the preceding claims, characterized in that the actuating element ( 11 ) with the recessed grip ( 9 ) is connected by a hinge ( 44 ) which is formed by a line thickness weakening notch ( 45 ) GE. 9. Door lock according to one of the preceding claims, characterized in that the operative connection between the actuating supply element ( 11 ) and the locking part ( 8 ) by the engagement of the free end ( 46 ) of the push lever ( 12 ) in a recess ( 47 ) in the locking part ( 8 ) is made in game fit. 10. Door lock according to one of the preceding claims, characterized in that the connecting elements ( 13 ) forming latching devices ( 16 ) from a number of on the housing ( 6 ) integrally formed spring tongues ( 47, 48 ) with sawtooth toothing ( 49, 50 ) and corresponding counter-teeth ( 51, 52 ) on the recessed grip ( 9 ). 11. Door lock according to claim 10, characterized in that the toothings ( 49, 50 ) are arranged on the side of the spring tongues facing the center of the housing ( 6 ), and in that the counter-toothings ( 51, 52 ) on the outside of the side walls ( 36 , 39 ) of the recessed grip ( 9 ) are formed. 12. Door lock according to claim 10 or 11, characterized in that the spring tongues ( 47, 48 ) are arranged opposite one another and at a distance inwards opposite two side walls ( 22, 24 ) of the housing ( 6 ). 13. Door lock according to one of claims 10 to 12, characterized in that on each of the two side walls ( 22, 24 ) at least two, preferably four spring tongues ( 47 and 48 ) are seen before. 14. Door lock according to claim 13, characterized in that in pairs lying side by side spring tongues ( 47, 48 ) the toothing ( 49 ) of the one spring tongue ( 47 ) with respect to the Ver toothing ( 50 ) of the adjacent spring tongue ( 48 ) by half the tooth pitch in Longitudinal direction of the spring tongues is offset. 15. Door lock according to one of claims 10 to 14, characterized in that the pitch of the teeth ( 49, 50 ) and the counter-teeth ( 51, 52 ) is 1 mm. 16. Door lock according to one of the preceding claims, characterized in that mating guide pins ( 53 ) and guide bores ( 54 ) are provided on the recessed grip ( 9 ) and the housing ( 6 ).