CONTROL GEAR FOR REARVIEW MIRRORS AND THE LIKE

Abstract: A control gear for adjustment of an external rear view mirror, comprising a body fixed in a suitable detail of a coachwork (A), a support (3) attached to said body and movable in two planes or about two axes, to which support the minor is fixed, a tubular part extending through said coachwork detail, a control handle (5) arranged at the inner end of said tubular part and transmission means (6, 16) arranged between said handle and said movable support. The novel feature is that the transmission means consist of a rotatable as well as axially displaceable rod (6) extending through the tubular part (1, 4) and an arm (16) which is articulated to an eccentrically onset outer end (17) of said rod and rigidly secured to the support (3) and that the e control handle is non-rotatably, relative to the axis (Z) of the rod but pivotally connected to said rod (6) and that the handle (5) is so mounted, that independently of the relative rotational position of the handle (5) and the rod (6) the turning of the handle and the axial displacement of the rod is permitted.

Description: CONTROL GEAR FOR REARVIEW MIRRORS AND THE LIKE The present invention relates to a control gear for adjustment of an external rearview mirror, comprising a body fixed in a suitable detail of the coachwork, a support attached to said body and movable in two planes or about two axes, to which support the mirror is fixed, a tubular part extending through said coachwork detail, a control handle arranged at the inne_c end of said tubular part, and trans¬ mission means arranged between said handle and said movable support. It is already known to provide control gears for rearview mirrors and the like with a tubular passage means and to dispose in said tube wires or the like which at one end are actuated by a handle and at the opposite end act upon the rearview mirror. It is also known- to use two rocs one of which is hollow and rotatable in the passage means and surrounds an axially displaceable rod, and the rotation of the mirror in one plane is brought about by turning of the first rod and the rotation of the mirror in the second plane is brought about by turning of the second rod. The object of this invention is to provide a device which is simplified by reduction of the number of rods and permits mounting in one hole and also permits simple adjustment and which is of such a nature that the risk of the. irror being subjected to the influence of the speed wind is reduced. The essential characteristic of the new device is that the transmission means consist of a rotatable as well as axially displaceable rod extending through the tubular part and an arm which is articulated with the eccentrically offset outer end of said rod and rigidly secured to the support, in which axial displacement of the rod causes the support to move about one axis and rotation of the rod causes the support to move about the second axis, that the control handle is non-rotary relative to the rod axis by means of a pin or the like fitted at the inner end of the rod but is pivotally / „. -,, , wι; ] o connected to the rod transversely of said axis, and that the handle by means of a further pin or the like is mounte in a U-shaped and outwardly open notch disposed concentric ly and in the form of an arc at the inner end of the tubul part, said notch permitting turning of the handle and axia displacement of the rod independently * of the rotational po tion of the handle and the rod. A preferred embodiment of the new device will be described in greater detail below with reference to the accompanying drawing-, in which Fig 1 is a perspective view diagonally showing the device in assembled condition from the outside, Fig 2 is a partial section of the mounted bed prior to the mounting of the control rod, Fig 3 shows the outer portion of- Fig 2 from the other side and Fig 4 is a top plan view of the mobile parts of the device and the nut sleeve. The device comprises a body consisting of a tube 1 at the outer end of which there is attached a housing 2 fc a support 3 which is movable in two planes and to which a rearview mirror is intended to be attached in a per se known manner. The tube 1, which is intended to extend through a car door or other detail A of the coachwork, is at its inner end connected with a nut sleeve 4 which carries a control handle 5 and retains the device to the car door. The mobile components of the device are three in number and consist of the aforementioned control handle 5, a control rod 6 and said support 3. The control handle includes a grip portion 7 and at the end thereof two parallel pins 8 and 9. The control rod 6 comprises a straight part 10 extending through the tube 1 of the body and the nut sleev 4. At. the end of the part 10 there is a bore 11 through which the pin 8 of the handle is intended to extend. At the opposite end of the rod is an angled portion 15 which supports an eccentrically situated ball socket 13. The control rod is so mounted in the tube of the body and the nut sleeve 4 attached thereto that can turn about its longitudinal axis and also be displaced axially. . The support consists of a cylindrical part 14 frcr which two diametrically opposite pins 15 extend. Attache:: to- the part 14 is an arm 16 which at its free end supports a ball 17 to be received in the ball -socket 13. The pins 15 of the support 3 are mounted between twc washers 18 and 19, respectively, fitted in the housing 2 and provided with opposite arc-shaped recesses. These washers are -provided with elongate openings oriented transversely cf the recesses for the pins 15, whereby the support can be- swung on an axis X extending through the pins 15. The washers are rotatable relative to the hcυsir.c and the support 3 can therefore be turned on an axis ϊ e.tend r. through the center of the washers or housing. The washers bear resiliently against the pins 15. The movement of the support about the first-ment. cr.ed axis X" is obtained in that the control rod 6 is turned abc t its longitudinal axis, whereby the ball socket, like a era.-..-: , will describe an arc-shaped movement and carry the ball¬ bearing arm 16 of the support 3 upwardly or downwardly ar.c thus turn the support 3 about the axis X. The difference in radius of rotation between, cr. one hand, the geometrical centre of the ball socket and the axis Σ • of the control rod and, on the other hand, the geometrical centre of the ball and the axis X extending throug ' h the pins 15 of the support 3 is compensated for in that a relative movement is permitted between ball socket and ball. The rotary motion of the rod is obtained by means of the handle 5. Since the -pin 8 extends through the roc 6 it is possible to turn the rod by turning the handle. The movement of the support about the axis Y is carried out by displacing the rod 6 in axial direction. Since the ball socket 13 engages the ball 17 attached on the arm 16 axial displacement of the rod 6 will cause the support 3 and the washers 18, 19 to turn in the housing 2 about the axis Y . The, axial movement of the rod is also carried out by means of the handle. One 8 of the ' pins in the handle is, as mentioned, attached to the end of the rod. The other pin 9 in the handle passes through a notch 20 of U-shaped cross-section in the end of the nut sleeve 4, extending in the form of the arc of a circle ' and adapted to the pin diameter and serving as a bearing for- the pin 9 which is attached to the handle 5. When the handle turns, the pin 9 will thus form a lever shaft and the rod 6 will thereby be axially displaced in the tube 1 via the pin 8. The pin 9 is retained in . position because the handle is radially fixed by the other pin 8 which passes through the rod 1, which is guided in the tube 1. Because the notch 20 follcv.'s the arc of a circle around the central axis of the rod 6 be possible for the handle to turn about the pin 9, ihdepencer. of the position of rotation of the handle and the rod. As the distance between the pins 8 and 9 is subs ar.tιal smaller than the distance between the axis Y of the suppcrt 3 and the geometrical turning point between the rod 6 and the arm 16 there is obtained a gearing of the turning movement of the handle. A similar gearing is obtained in connection with mcver.e about the axis X because the geometrical turning point between the ball 17 and the ball socket 13 is more distant from the axis X than from the rod axis Z. As a result of the indicated gear ratios the rearview mirror attached on the support 3 will be firmly retained in set position and will not be unintentionally reversed under the influence of the speed wind. The simple construction of, especially, the part passing through the coachwork ,makes it possible to adapt the control device to various door designs with a minimum of trouble. If the door or the part to which the device is to be secured is, for example, narrower than that shown in the drawings, use' is made of a shorter rod and a corre- spondingly shorter tube. Owing to the described construction the mounting of the device is most simple and is reduced to making circular holes in the external and internal sheets. The tube (1) is EAS ORIGINAL introduced through these holes, whereupon the nut sleeve 4 i> screwed on and the handle 5, which may be provided with the. pin 9, is pulled on and secured to the rod by means of the pin 8. As concerns the embodiment of details it is obvious that the device can be varied within -wide limits. Thus, the invention must not be considered limited to that described and shown in the drawing but may be modified in various ways within the scope of the following claims.

Claims: CLAIMS 1. A control gear for adjustment of an external rearview mirror, comprising a body fixed in a suitable detail of the coa work (A) , a support attached to said body and movable in two planes or about two axes, to which support the mirror is fixed, tubular part extending through said coachwork detail, a control handle arranged at the inner end of said tubular part, and tran mission means arranged between said handle and said movable support, the transmission means consisting of a rotatable as we as axially displaceable rod (6) extending through the tubular p (1, 4) and an arm (16) which is articulated to the eccentricall offset outer end (17) of said rod and rigidly secured to the support (3) , wherein axial displacement of the rod (6) causes t support to move about a first axis (Y) and rotation of the rod causes the support to move about a second axis (X) , characteriz in that " the control handle is non-rotatably, relative to the ax of the rod, but pivotally connected to said rod by means cf a transverse pin or the like (8) fitted at the inner end of the ro provided along an axis transverse to the rod axis, and that the handle (5) by means of a further pin or the like (9) mounted sub stantially in parallel with the first pin and adapted to engage U-shaped and outwardly open notch (20) at the inner end of the tubular part disposed concentrically with the rod and serving as fulcrum and independently of the relative rotational position of the handle (5) and thepart (4) permitting turning of the handle about the transverse further pin and thereby axial displacement the rod relatively to the tubular part. 2. A contro 1 gear according to claim 1, characterized in th the outer end of the rod (6) is provided with an eccentrically offset ball socket (13) which embraces a ball (17) disposed on t arm (16) which is rigidly secured to the support (3) , the centre of the ball socket (13) being beyond the axis of the rod and the axis of the support being on the opposite side of said axis (Z) . 3. A control gear according to claim 1 or 2, characterized in that the axis (X) about which the support (3) is rotatable by turning of the rod (6) is situated at an angle with the axis of rotation (Z) of the rod. 4. A control gear according to claim 1, 2 or 3, characteriz in that the tubular part comprises a part (1) which extends thro the coachwork detail (A) and to the outer end of which a housing for the movable support (3) is attached, and a part (4) in the f of a nut sleeve retaining the device to the coachwork detail, th U-shaped notch (29) , formed as the arc of a circle, being situat at the inner end of said retaining part. ' B KtA^

Inventors: ALLANDER C, HOLMQVIST G
Applicants: ALLANDER C, BRAAS SPEGELINDUSTRI AB, HOLMQVIST G, BRAAS SPEGELIND AB
Application year: 1979
Main classification: B60R1
IPC codes: B60R1