DE2113622A1 - Motor vehicle rearview mirrors, in particular exterior mirrors - Google Patents

Description

Joachim Engelmann in Wennebostel / Han.

Motor vehicle rearview mirrors, especially exterior mirrors

The invention relates to a motor vehicle rearview mirror, but in particular to an outside mirror whose housing accommodating the mirror body has a ball joint with <| is connected to the foot attached to the vehicle, the ball- ^and- socket connection being releasable upon mechanical action on the housing. /

It is known to elastically deform the sockets used in the aforementioned ball-and-socket joints in order to change the clamping effect. The pan is influenced by bracing by more or less tightening the pan's fastening screw for attachment to the vehicle. This type of influencing the ball joint can only be achieved with flat socket / afso MS? ⁿ then not be realized if -

the pan is at the front end of a columnar foot.

The invention is essentially based on the object of the adjustability of the clamping of the ball joint so to make sure that it is independent of how the pan is attached to the vehicle and that it is still practical for the foot Rigid and thus materials can be used that have a high level of strength, which is then required are, if the mirror is to be used as an outside mirror, where it is one compared to an inside mirror subject to greater stress iat.

209845/0180 _ ₂ __

To solve this problem, according to the invention, the effective outer diameter of the ball of the joint can be changed, which is preferably achieved by dividing the ball into segments that can be moved apart by an expanding wedge, which can be achieved by a screw acting on the expanding wedge.

The foot of the rearview mirror can now be made of a solid, rigid material; to change the clamping effect or the holding force of the ball joint, it is only necessary to deform the segments of the ball, what can be done by tightening the screw mentioned. Since the ball is also arranged inside the pan is and accordingly here also the one to change

Means of the ball diameter required / arranged are these funds are not recognizable from the outside or are housed in a protected manner.

Further details of the invention are based on the Drawing explained in the further details of the invention are shown. Show it. :

| "Fig. 1 an outside rearview mirror for a passenger car in the front view, i.e. seen in the direction of the mirror body,

Pig. 2 the mirror according to FIG. 1 in the bottom view and

Pig. 3 shows a vertical section through the lower part of the mirror, i.e. through the base of the mirror and the joint connection located there.

At the rear end of the housing 1, which is essentially streamlined and encloses the actual mirror body 2 at its front end, there is a permanently attached ball 3 _S on its underside, which is assigned to a pan 5 arranged at the upper end of an approximately columnar foot, whereby an all-round pivotability of the housing 1 gegenübeijdan

209845 / OteO - 3 -

Λ Λ Λ f «■ f rt λ ft

Foot 4 is reached, which in turn by screws is held rigidly on the vehicle 7 ".

The ball 3 of the joint is divided by several axial slots into corresponding Tiele segments 9, which run out freely towards the lower end, that is to say towards the vehicle 7. At the inner edge of these segments 9 there is an inclined surface 1o on which a conical expansion body 11 engages, which is penetrated by a screw 12 arranged axially to the ball 3 in such a way that when the screw 12 is tightened, the segments 9 expand, whereby the effective outer diameter of the ball 3 is increased and accordingly the pressure between the pan is 5 m

and the ball 3 · The clamping action of the ball joint is thus changed, whereby in turn a change in the holding force is achieved, which is required to the Joint connection in the event of accidents or the like to be lifted.

Since the screw 6 for fastening the foot 4 of the recess 13 serving to form the pan 5 within of the foot 4 goes out and continues to be arranged at the free end of the ball 3 screw 12 for adjustment of the effective ball diameter is also arranged within the recess 13, there is a hidden, secure arrangement of these elements.

It should also be mentioned that the articulated connection is exclusively provides an interlocking of ball 3 and socket 5; others connecting these elements Bolts or the like are therefore not provided.

209845/0160

Claims (6)

sayings 1. Motor vehicle rearview mirrors, especially exterior mirrors, Whose the mirror body receiving housing over a Ball joint is connected to the Puss to be attached to the vehicle ■, the ball joint connection at mechanical action on the housing is releasable and thus the articulated connection exclusively by a Interlocking of ball and socket is accomplished, characterized in that the effective outer diameter the ball (3) is changeable. 2. Mirror according to claim 1, characterized in that the ball (3) axial slots (8) to form segments (9) distributed over the circumference of the ball has that are expandable. 3. Mirror according to claim 1 and 2, characterized in that the spreading of the segments (9) by an axial adjustable expansion body, which is attached to the housing (1) by a screw (12) arranged axially to the ball. of the mirror is movable. 4. Mirror according to claim 3, characterized in that the expansion body (11) is conical. 5. Mirror according to the preceding claims, thereby marked that the adjustment of the ball (3) serving means (11,12) protrude into a recess (13) located inside the puss (4) which also has the Pan (5) forms. 6. Mirror according to the preceding claims, characterized in that of the recess (13) also the Go out hole (s), .which are used to receive the fastening screws (6) for the Euss (4). 209845/0160