CN1890772B - Switch module - Google Patents

Abstract

The invention relates to a switch assembly with a switch lever mounted pivotably in a bearing housing, wherein the switch lever has two mutually opposite, overhanging bearing necks and the bearing housing has Receptacle bores, wherein the receptacle bores are formed at least in sections in a polygonal shape and the switching lever is acted upon with its bearing neck in the direction of a corner.

Description

switch assembly

technical field

The invention relates to a switch assembly, in particular with a switch lever mounted pivotably in a bearing housing, wherein the switch lever has two mutually opposite, overhanging bearing necks and the bearing housing has some receiving holes.

Background technique

Such switch assemblies are used in motor vehicles, for example, as switches on the steering column. Such switches on the steering column are used, for example, as light switches, flasher switches, wiper switches and the like. Since the switching lever is relatively long and causes constant vibrations of the motor vehicle, high demands are placed on the bearing of the shaft with regard to its long service life and lack of backlash. In particular, bearing play causes noise which is partly perceived as a fault. Conventional bearing structures have a circular receiving opening in which a circular bolt is supported. Due to the extreme temperature fluctuations to which such switching assemblies are subjected, it must be avoided in any case that the round pins become stuck in the receiving opening and that the switching lever cannot or can no longer pivot reliably. Therefore, there is always a gap for the round pegs located in the receiving holes, but this can lead to the problems mentioned above.

Contents of the invention

It is therefore the object of the present invention to provide a switching arrangement which causes less noise.

According to the invention, this object is solved by a switch assembly of the type mentioned at the outset in that the receiving openings are at least partially polygonal in shape and the switching rod is loaded with its bearing neck in the direction of a corner of the receiving opening. force.

Due to the polygonal configuration of the receiving hole, separate bearing surfaces are created for the bearing neck, so that the bearing neck assumes a defined position, which is directed by a defined force in one direction of the receiving hole or towards one of the receiving holes. Corner extrusion. In this case, the contact surface in the receiving opening can be flat or curved convexly or concavely. Advantageously, the angle of the receiving opening for receiving the bearing neck is preferably formed by a V-shaped section, so that the bearing neck rests on both sides of the receiving area. Lifting of the bearing necks from the contact surface is prevented by the fact that they touch with a defined, in particular adjustable, force. Thus, the gap can be dimensioned relatively loosely without worrying about rattling noise.

It is contemplated in a further development of the invention that the bearing housing forms a bearing seat which itself has two bearing necks whose axes are arranged perpendicular to the axis of the receiving opening. In this case, the component housing has two receiving openings for the bearing necks of the bearing shoe, which are likewise configured in sections as polygons. As a result, the bearing necks of the bearing shoe are also held without play in the polygonal receiving openings and also bear against the contact surfaces under the action of a predetermined force.

According to the invention, the bearing necks of the switching lever and of the bearing shoe together with the receiving holes in the bearing shoe and the receiving holes in the component housing form a universal joint. The user can thus swivel the switching lever not only upwards but also downwards as well as forwards and backwards, with all pivoting directions and all pivoting movements being compensated by play.

Preferably, a contact element guide is located on the opposite side of the switching lever relative to the bearing, said contact element guide being supported on a wall of the component housing. According to the invention, the supporting force exerted by a helical spring presses the bearing necks of the switching lever in the receiving opening of the bearing shoe and presses the bearing necks of the bearing shoe in the receiving opening of the component housing. Therefore, only one elastic element is sufficient for play compensation. However, it is also possible to use other components instead of the helical wire spring to generate the pressing force, in particular in the area of the receiving holes material bulges such as elastic lips and the like can be used, wherein the elastic elements can also be arranged directly in the area of the receiving holes , the elastic elements act on the bearing necks.

In a preferred embodiment, the receiving opening is substantially triangular in design. In this case, the bearing neck is located between these two triangular sides, wherein the contact force and thus also the frictional moment of the bearing neck in the receiving opening can be adjusted via their opening angle.

According to a preferred embodiment of the invention, the switching lever is loaded with force in the direction of its operating end facing the user. As already mentioned, this is achieved in a simple manner by a compression spring acting on the end opposite the actuating end.

Description of drawings

Further advantages, features and details of the invention emerge from the subclaims and from the following description, in which particularly preferred exemplary embodiments are explained in detail with reference to the drawings. In this case, the individual features or any combination of these features shown in the drawings and mentioned in the description and claims are essential to the invention.

Shown in the accompanying drawings:

Figure 1 is a perspective view of a switch assembly;

FIG. 2 is a partially cutaway switch assembly according to FIG. 1;

Fig. 3 is an enlarged view of part III in Fig. 2;

4 is a perspective view of a section of a switching lever with a bearing seat that is supported in the component housing;

An enlarged view of a part V in Fig. 5 Fig. 4;

VI-VI sectional view of Fig. 6 Fig. 1;

Fig. 7 VII-VII sectional view of Fig. 6 .

Detailed ways

FIG. 1 shows a switch assembly generally designated 10 which is used, for example, in the form of a switch on a steering column. For example, flashers, windshield wipers, illuminants and the like can be switched on and off using such a switch assembly 10 . The switch module 10 has a module housing 12 , which is only shown as an example. Protruding from the component housing 12 is a switching lever 14 , which is mounted pivotably about a first axis 16 in the component housing 12 . For this purpose, the module housing 12 has two receptacle openings 18 arranged opposite one another, in which each a bearing neck 20 is supported.

It can be seen from FIG. 2 that said bearing neck 20 protrudes from a bearing seat 22, wherein, as also seen in FIG. Bearing necks 26 fit into these receiving holes. The bearing necks 26 form a second pivot axis 30 which is arranged perpendicularly to the first pivot axis 16 .

It can be seen from FIG. 7 that the switching lever 14 terminates integrally on the other side of the bearing point with the contact element guide 28 , wherein the contact element guide 28 is hollow and surrounds and guides axially a latch. pin 32. When the switching lever 14 is actuated, the locking pin 32 is moved along a link 34 formed in the component housing 12 and is supported on said link by the force of a helical compression spring 36 .

The helical compression spring 36 is located between the thickened free end 38 of the locking pin 32 and the shoulder 40 of the contact element guide 28 , which causes the contact element guide 28 in FIG. Press out of the component housing 12 to the left. This causes the bearing neck 26 of the contact element guide 28 —as shown in FIGS. 4 and 5 —to be pressed against the two side walls 42 of the polygonal receiving opening 24 .

The force of the spring 36 is indicated by arrows 44 (cf. FIG. 5 ), and the arrows 46 show the pressing force of the bearing neck 26 on the side walls 42 . A defined frictional moment of the bearing neck 26 on the side walls 42 is set by varying the angle Ω and by varying the diameter of the bearing neck 26 .

Since the bearing necks 26 are supported in the receiving holes 24, the bearing seats 22 are also pressed to the left, which results in the bearing necks 20 of the bearing shoe 22 being pressed in the receiving holes 18 by a force 48 (see FIG. 3 ), There, the bearing necks bear against a side wall 52 of the receiving opening 18 with a force 50 . Here too, a defined frictional moment of the bearing neck 20 in the receiving opening 18 can be adjusted via the angle Ω and the diameter of the bearing neck 20 .

In any event, all bearing necks 20 and 26 are seated under a certain preloading force in their polygonally shaped receiving openings 18 and 24 , whereby possible play is reliably compensated.

Claims (8)

1. switch module, have one and be bearing in a switch lever (14) in the support housing swingably, wherein said switch lever (14) have two mutual opposed, the supporting neck that overhangs out (26), and described support housing has some receiver holes (24), wherein, these receiver holes (24) are configured to polygon at least section, described polygon has two sidewalls (42), it is characterized in that, described switch lever (14) by the direction loading force of a definite power towards a bight of receiver hole (24), makes these supporting necks be crushed on two sidewalls (42) of described polygon receiver hole (24) with its supporting neck (26).

2. switch module according to claim 1 is characterized in that, described support housing constitutes a supporting base (22), and described supporting base itself has two supporting necks (20), and the connect axis (30) of batter (24) of their axis (16) is vertical.

3. switch module according to claim 2 is characterized in that, also comprises assembly housing (12), and described assembly housing (12) has two receiver holes (18) that are used for the supporting neck (20) of supporting base (22), is configured to polygonal their sections.

4. according to claim 2 or 3 described switch modules, it is characterized in that, these supporting necks (26) of switch lever (14) and these supporting necks (20) of supporting base (22) in supporting base (22) these receiver holes (24) and these receiver holes (18) in the assembly housing (12) constitute a universal joint.

5. switch module according to claim 1, it is characterized in that, described switch module has an assembly housing (12), described switch lever (14) stretches out from assembly housing, switch lever swingingly is bearing in the assembly housing, the described support housing of a contact element guider (28) reference is positioned at the opposition side of switch lever (14), and described contact element guiding means supports is on a wall of assembly housing (12).

6. require 1-3 according to aforesaid right, described switch module one of in 5 is characterized in that these receiver holes (18,24) are leg-of-mutton basically.

7. require 1-3 according to aforesaid right, described switch module one of in 5 is characterized in that, described switch lever (14) is by by a spring (36) loading force.

8. require 1-3 according to aforesaid right, described switch module one of in 5 is characterized in that, switch lever (14) is by the direction loading force of operating side towards it, and described operating side is towards operating personnel.

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