MX2012008680A - Lock having an insertion buffer. - Google Patents

Abstract

A lock (1) is provided for a motor vehicle door (2), wherein an insertion buffer (4) in the lock housing (3) is provided with a flexible insert (8) for the lock retainer (5) or the wire thereof. Said insert (8) has a U-shaped section, which overall or at the lowest point defines a clinging surface (15) for the wire of the lock retainer (5), wherein an accordingly suitable plastic is provided. Furthermore, the clinging surface (15) can also have special structures in order to avoid noise development while the lock is closed.

Description

LOCK WITH INSERTION BUTTON The invention relates to a lock for an automobile door with an insert stop for the lock retainer, in which the insert stop is equipped with an insert or cover on the opposite side to the lock, with the section that is in contact with the U-shaped lock.

This type of lock is used in many types of cars, although in DE 10392815 T 5 there is a variant in which the lock box and the lock retainer are fixed in the car door, or in a fixed part of the car. the body near the same door of the car. In both cases, when closing the door they come into contact, and when they open, they separate, whereas according to DE 10392815 T 5 the insert stop for the lock retainer yields elastically to achieve a cushioned stop of the lock retainer. The insertion stop is provided, on the side opposite the lock retainer, with a U-shaped insert or cover. This part is rigid and has a surface coating. This surface coating will be of a ceramic material with a low coefficient of friction.

The purpose of the invention is therefore to improve the insertion stop of automobile doors, as regards the entry guide of the lock retainer.

According to the invention, this task is solved by obtaining a design of the insert with the section and with the legs of the shell totally or partially flexible in said section, and incorporating in the retainer of the lock an adherent surface.

In an insert stop designed in this way the necessary flexibility is achieved mainly through the insert. The same "area of inverse curvature" is molded or designed so that, for the retainer of the lock that moves repeatedly in this area, a surface is created in which it can be adhered without giving rise to an overload or a similar effect . The inserts thus designed facilitate that the components glide smoothly and fit together. If dust particles are introduced, they are practically harmless. The insert designed in this way, and which is U-shaped, also has advantages in the guiding of the lock retainer, since it allows the retainer to fit perfectly in the area in which it finds the adherent surface.

According to a suitable representation of the invention, it is provided that the insert of the area of the legs of the shell has reinforcement ribs, while the area of the section does not. This representation is especially easy to make without complicating the connection of the insert with the cap box itself. Actually the insert can be placed in the top case or the edge of the top case, and the section that forms or contains the adherent surface directly receives the aforementioned flexibility.

In a different representation it is provided that the insert of the section area has a smaller wall thickness, preferably between 30 and 70% smaller than the legs of the shell. This form of representation goes beyond the one described above because in this case the area of the section not only does not carry any reinforcement, but is specifically designed to be flexible by applying a reduced wall thickness. The entire section can have this reduced wall thickness, or it can also be reduced from the shell legs until it reaches the area of the adherent surface itself, maintaining the same wall thickness conveniently in the area of the adherent surface.

In a representation of the insert with increasing flexibility, the insert has reinforcement ribs and fixation to the base of the shell-shaped section, and then it is reduced towards the base. This means that the outer edge of the legs of the shell have pronounced ribs of reinforcement and fixation, while these gradually become smaller or less pronounced until they reach the base.

To avoid any problem of insertion in the lock retainer, it would be convenient for the insert to have rounded edges in the guide area of the lock retainer, also assuming an improvement rounding the corners of the insert, in addition to the edges. These roundings can at the same time be beneficial in helping to reinforce this area, which create the reinforcement and fixation nerves mentioned above.

The plastic has proved to be an economical alternative as a material for the insert, mainly because the "molding" of the reinforcing and fixing ribs is particularly economical to carry out also for the decreasing design.

Therefore, it has been determined that it is particularly profitable to manufacture the insert with plastic with values of modulus E < 12,000 N / mm2, preferably < 6,000 N / mm2. The appropriate plastic offers the desired flexibility, which in this area must be reinforced by the special design, and which also stands out because the dust particles of the contact surfaces are "pushed" towards the plastic, unlike in the current state of the technique, and that at least reduce the friction effect.

The advantage of the flexibility of the insert that has been discussed takes place if the insert is made with polyoxymethylene (POM) and the top box with polyurethane (PUR). This representation also presents valuable advantages, since according to the present invention the flexibility of the stopper box is no longer absolutely necessary because the insert now fulfills that function, and the cost of the material is proportionally smaller.

As indicated above, the plastic offers at least in a limited area the possibility that the dust particles are "pressed" into the plastic. This contributes to reducing the friction effect, which can be further improved if the insert section of the adherent surface area, or all of it, has a knot structure. In this type of representation, the dust particles can be introduced into the cavities existing between the knots, so that they do not influence the friction of the adherent surface.

In another aspect of this representation, the section of the insert disposes, totally or in the area of the adherent surface, of a golf ball structure.

Said representation has the advantage that the dust particles can sink in the cavities that the structure presents, while the flat parts between the cavities remain available as adherent surfaces, offering this structure favorable stability values, since the flat parts between cavities provide a conveniently wide surface.

The flexibility of the insert can also be adjusted to the respective conditions if the legs of the shell of the insertion stop, and the section, are designed as separable components connected together. The same legs of the shell can have a noticeably more robust design, while the section that contains or forms the adherent surface can be made of another flexible material. If necessary, this section can be replaced, but the most important thing is that different materials can be used in the manufacture of the legs of the shell and the section. By means of this design and the type of material the effect of the "semiconcha" can be improved, converting it into a clamp that presses the lock support. Obviously this effect is also achieved with a one-piece design.

Another option specifically designed to obtain flexibility is to design the legs of the shell and the section so that they are to some extent displaceable among themselves, which is easily achieved by making the legs of the shell and the section can move antagonistically in longitudinal grooves specially designed. One piece is provided with its corresponding longitudinal grooves, and the other with its buttons, so this representation should only be taken into account as a possible option.

The invention is characterized in particular by incorporating an insertion stop with an elegant entry guide in the locks of the automobile doors, because the lock support is guided from the entrance of the insert to its deepest point, so that in the deepest point enters an area in which it adheres to it. The entire insert stop or the insert is then so flexible that at least in the section in which the adhesive surface is located, the lock support and its cable are partially surrounded by the U-shaped section, so that when it is opened the Door separates again without problem of the insert. It is also extremely advantageous that the powder particles that are introduced do not cause any damage, since the adhesive surface has a special structure, exactly a structure of knots or golf ball, so that said structure not only retains the particles of dust, but in the case of particularly problematic particles also allows them to penetrate the plastic.

This possibility is offered by the plastic used in the insert, which also offers the advantage that, apart from providing flexibility, it also offers the necessary stability values in the area of the legs of the shell, especially the reinforcing and fixing nerves. incorporated into the insert.

Other details and advantages of the object of the invention appear in the following description that accompanies the plan, in which a preferred representation with the necessary data and components is shown: Figure 1 shows a car door with an insertion stop and the insert mounted on it.

Figure 2 shows an insert with the entrance area for the lock retainer (not shown in the figure).

Figure 3 shows the insert seen from the rear.

Figure 4 shows a U-shaped insert with knot structure, and Figure 5 shows a U-shaped insert with a golf ball structure.

In figure 1 only part of the door of the vehicle 2 with the lock 1 appears, specifically the lock box 3 with the insert stop 4 mounted. This insert stop 4 contains an insert 8 which basically defines the entrance area 7 on the side 6 opposite the cable (only indicated) of the retainer of the lock 5. This insert 8 consists of a U-shaped section 9 and legs of the shell 10, 11, which are inserted or are part of it. The number 25 represents the box of the insertion stop 4.

Figure 2 shows the insert 8 that appears in figure 1 and that is placed on the insertion stop 4. The complete component, for example, is made of polyoxymethylene (POM) and appears as a single piece, that is, the section 9 U-shaped and the legs of the shell 10, 11 are manufactured in a single phase. The reinforcing ribs 14, in this case only on the legs of the housing 10, 11, are molded in the same phase on the legs of the shell 10, 11 or from thereon.

It is evident that the U-shaped section contains an adherent surface 15 at its lowest point, which as seen in Figure 3 has a thinner wall thickness than the shell legs molded on it 10, 11. Figure 3 finally illustrates how, from the legs of the cowl 10, 11, or even from the edge 22, the thickness of the wall 16 is gradually reduced towards the adherent surface 15. In this way this area obtains an advantageous flexibility , whereby the aforementioned adhesion surface 15 is achieved for the cable of the lock retainer 5.

Between the U-shaped section 9 and the legs of the shell 10, 11, a base 17, 17 'is indicated in which the reinforcement ribs and 5 the fastening ribs 18, 19 terminate. They practically form a decreasing section 20, 21, which can be seen in particular in FIG. 3. This facilitates the positioning and containment of the upper area of the top case 25, which is necessary when the insert 8 is placed on the top case 25 itself.

To avoid any obstruction during the entry of the cable of the lock retainer 5, the edges 22, 24, and even the corners 23 are rounded, which can be seen well in Figure 2.

Figures 4 and 5 highlight the adherent surface 15 of the insert 8 or the section 9 in U-shape. In figure 4 the adherent surface 15 is shown with a knot structure 27, in which each knot 29, 30 can present a 15 same shape or even different shapes, and where between these knots 29, 30 surfaces are created in which dirt particles can be stored.

In the representation shown in figure 5, with the golf ball structure 28, dirt particles can be deposited in the cavities 31, 32, while the intermediate flat parts 33, 34 20 ensure that the cable of the lock retainer disposes of a larger contact surface than in the representation shown in Figure 4 with the knot structure 27. Both structures 27 and 28 reduce the noise level while the lock is closed, and advantageously contribute to the effect of the section in the form of a half-shell 9 as a clamp that exerts pressure on the lock retainer 5.

All the mentioned characteristics, including those that emerge from the illustrations, will be considered as important characteristics of the invention, either by themselves or in combination with others.

Claims (12)

RECIPE N DICAC ION ES

1. Lock for a car door with an insert stop for the lock retainer, in which the insert stop is provided with an insert or a cover on the side opposite the lock retainer, and the section of which, entering contact with the retainer of the lock, is U-shaped, which is characterized in that the insert with the section and the legs of the shell are flexible, totally or only in the section, and because the retainer of the lock offers an adherent surface.

2. Lock according to claim 1, characterized in that the insert is provided with reinforcing ribs in the area of the legs of the shell, while in the area of the section no.

3. Lock according to claim 1, characterized in that the insert, in the area of the section, has a lower wall thickness, preferably between 30 and 70%, than that of the legs of the shell.

4. Lock according to claim 1, characterized in that the insert to the base of the section shown in the form of a shell has reinforcing and fixing ribs that are reduced until reaching the base.

5. Lock according to one of the preceding claims, which is provided with rounded corners in the entry area of the lock retainer.

6. Lock according to claim 5, characterized in that in addition to the edges, the corners of the insert also appear rounded.

7. Lock according to one of the preceding claims, characterized in that the insert is made of plastic with values of modules E < 12,000 N / mm2, preferably < 6,000 N / mm2

8. Lock according to one of the preceding claims, characterized in that the insert is made of polyoxymethylene (POM), and the polyurethane stop box (PUR).

9. Lock according to one of the preceding claims, characterized in that the section of the insert has, in the area of the adherent surface, or in all of it, a structure of knots.

10. Lock according to one of the preceding claims, characterized in that the entire section of the insert, or only in the area of the adherent surface, has a golf ball structure.

11. Lock according to one of the preceding claims, characterized in that the legs of the shell of the insertion stop and the section are represented as separable components connected to each other.

12. Lock according to one of the preceding claims, characterized in that the legs of the shell and the section are designed to be, to a certain degree, movable relative to each other.