JPH053403Y2 - - Google Patents

Description

[Detailed Description of the Invention] <<Technical Field of the Invention>> The present invention relates to a control device for a foldable door mirror of an automobile. In particular, the present invention relates to a control device for a foldable door mirror that electrically switches and sets a mirror housing, which is a rotating member of the door mirror, between a normal position and a tilted position with respect to a base, which is a fixed member.

《Prior art and its problems》 In recent years, rearview mirrors installed on automobiles have been designed to reduce air resistance on the car body, improve driving performance, and reduce fuel consumption.They also have an excellent design and provide good rear visibility. For reasons such as availability, fender mirrors that are mounted on the front of the vehicle body have been replaced by so-called door mirrors that are mounted near the doors. However, in this type of door mirror, the curvature of the mirror that reflects the field of view is set to be that of a plane mirror or a curvature close to that of a plane mirror. For this reason, the size of the mirror itself tends to be large, particularly in the lateral direction of the vehicle body, and in accordance with this tendency, the mirror housing itself, which is a rotating member that houses the mirror, has tended to become large.

For this reason, when exporting or domestically transporting a car with door mirrors attached to the car body, not only does the vehicle space during transport increase, leading to an increase in transportation costs, but also Problems were that it was difficult to store the vehicle in a garage with a space that matched the fender mirror, and that the door mirror could come into contact with a wall or the like when it was put into the garage, causing damage to the door mirror or the vehicle body.

In order to eliminate the above-mentioned problems, the applicant has forcibly tilted and rotated the fixing member (mounting base) of a door mirror with a shock absorbing mechanism by hand as in Utility Model Application No. 58-33340. A holding device is interposed between the member and the fixed member to hold the rotating member tilted. However, in this case, since the rotating member is manually tilted, workability is poor during rain or when the rotating member is frequently tilted, and moreover, there is a constant tensile force that causes the rotating member to return to the fixed member. , which caused problems such as the danger of removing it.

For this reason, it has been desired to have a structure in which the rotating member is electrically and automatically tilted relative to the fixed member. A configuration in which the rotating member is electrically tilted automatically in this way has been previously disclosed in Japanese Utility Model Application No. 17243/1983, but in this example, the rear view mirror is different from the rear view mirror used while driving. It is installed separately and tilts the back mirror itself.Basically, this invention solves the problem of tilting the door mirror used while driving during transportation or when parking in a garage. They are different, and therefore their configurations themselves are also different.

<<Purpose of the invention>> In view of the above circumstances, the present invention electrically controls the tilting of the rotating member with respect to the fixed member, and performs self-braking when stopping when returning from the tilted position to the normal position. It is an object of the present invention to provide a control device for a foldable door mirror, in which a rotating member is reliably set in a normal position with respect to a fixed member.

<<Structure of the invention>> The mirror housing 2, which is a rotating member, is moved by a drive motor M to a normal position in which the mirror housing 2, which is a rotating member, protrudes in the lateral direction of the side of the vehicle body with respect to a base 1, which is a fixed member, and a tilted position, which is approximately along the side of the vehicle body. A control device for a folding door mirror for switching and setting, which includes a power source V, a drive motor M, a positive terminal V ₁ and a negative terminal V ₂ of the power source V.
a first switch SW ₁ and a second switch SW ₂ connected to the
A control unit 6 is disposed between SW ₁ , SW ₂ and the drive motor M, and one end is connected to the control unit 6 and the other end is connected between the drive motor M and the first switch SW ₁ . the first diode D ₁ and the second diode D ₂
The control unit 6 comprises:
attached to the base 1 side and the first to fourth conductors 6;
a, 6b, 6c, and 6d, and is attached to the mirror housing 2 side so that the conductive plate 61 is in rotational contact with the conductive plate 61, and when the mirror housing 2 is in the normal position, the first Terminal A contacts the conductor 6a, terminals B and C contact the second conductor 6b, terminals D and E contact the third conductor 6c, and one terminal contacts the fourth conductor 6d. The contact terminal 51 is made of F, and the first diode
_D1 is connected between a terminal F of the contact terminals 51 of the control unit 6 that contacts the fourth conductor 6d and the drive motor M so that current flows only from the terminal F side to the drive motor M side. , the second diode _D2 is connected to the terminal C in order to cut off current from the terminal C side that contacts the second conductor 6b of the control unit 6 to the drive motor M side.
and the drive motor M, the first conductor 6a and the third conductor 6c of the conductive plate 61.
have a fan-like shape, and the first conductor 6a is centered on a line from the axis O-O' perpendicular to the rotation center axis of the mirror housing 2 to the center point P in the normal position of the mirror housing. The third conductor 6c is in the range from approximately 255° in one direction to 15° in the other, and the third conductor 6c is centered from the axis O-O' perpendicular to the rotation center axis of the mirror housing 2 in the normal position of the mirror housing. The second conductor 6b and the fourth conductor 6d are arranged on the base 1 facing each other at an angle of 75° to 195° to either the left or right with the line to point P as the center, and the second conductor 6b and the fourth conductor 6d A first conductor and a third conductor are arranged on the base 1 to face each other, and the first conductor 6a and the second conductor 6b are arranged in a second conductor.
The protruding portion provided on the conductor 6b is the first conductor 6
A non-conductive part is fitted with a gap in the notch part formed in a, and is formed so that the terminal 51B passes through it immediately before the drive motor M stops when the mirror housing 2 is in the normal position after being tilted. 6a', and the third conductor 6c and the fourth conductor 6d are arranged in a fan-shaped recess formed in the fourth conductor 6d.
are fitted with a gap between them, and the terminal 51
The conductive plate 61 of the control unit 6 connects the terminals B and C to the second conductor 6b when the drive motor M is stopped. and connect the drive motor M and the positive terminal V ₁ of the power supply.
through the first diode _D1 , or connect the terminals 6E and 6F to the fourth conductor 6d.
The inertial force of the drive motor M is self-braking by short-circuiting the drive motor M and the positive terminal _V1 of the power source via the second diode _D2 . .

《Explanation of Examples》 Examples of the present invention will be described below.

Figures 1 to 4 show an example in which a conductive plate is attached to the base side and a terminal that makes electrical contact with the conductive plate is attached to the mirror housing as in the present invention. For the structure of the conductive plate, please refer to FIGS. 5 to 8.

The conductive plate 61 in the present invention is shown in FIGS.
It is attached to the base 1 side which is the fixing member of the foldable door mirror shown in the figure. That is, as shown in FIG. 1, the base 1 includes a mirror housing 2 having a semi-elliptic planar shape and protruding downward in an L-shape toward the mirror housing 2, which is a rotating member, when viewed from the front.
The mounting portion 11 of is protruded. A conical bearing 12 protruding toward the mirror housing 2 is formed in the mounting portion 11, and a cylindrical portion 13 at the tip of the bearing 12 has an attachment portion 12b for the large gear 35 and an attachment portion 12c for the spring 41. are integrated.

And the code 7 is attached to the bearing 12 and the cylindrical part 13.
An insertion hole 12a is provided.

Further, the main body portion 14 formed above the mounting portion 11 of the base 1 is provided with a curved recess 14a of the side wall 21 of the mirror housing 2 having an arc shape.

The mirror housing 2 has a substantially rectangular box shape, and a side wall 21 on the side of the base 1 is curved and protrudes in an arc shape, and a fitting recess 22 cut out to correspond to the mounting portion 11 of the base 1 is provided below the side wall 21. It is being In the fitting recess 22, a mounting portion 23 of the drive mechanism 3 having a conical sliding hole 22a that fits into the conical bearing 12 is attached to the mirror housing 2.
It is formed to protrude inward. Furthermore, a box-shaped lid 24 is attached to the mounting portion 23, and large and small gears 3 of the drive mechanism 43 are mounted inside the lid 24 and the mounting portion 23.
3 and 35 storage portions 24a are formed.

The drive mechanism 3 includes a reduction gear 32 mounted on the lid 24, a drive motor 31, and the reduction gear 32.
A drive shaft 34 extending further into the storage portion 24a, a small gear 33 fixed to the drive shaft 34, and the small gear 3
3 and a large gear 35 fixed to the mounting portion 12b of the cylindrical portion 13 formed integrally with the bearing 12 of the base 1.

The base 1, mirror housing 2, and drive mechanism 3 configured as described above are assembled as follows. That is, the mirror housing 2 has a fitting recess 2
The sliding hole 22a formed in the bearing 12 of the base 1
The fitting recess 22 fitted into the mounting portion 11 is fitted into the fitting recess 22 . At this time, the side wall 21 of the mirror housing 2 is disposed within the curved recess 14a formed in the main body 14 of the base 1. Further, a large gear 35 of the drive mechanism 3 is fixed to the mounting portion 12b of the cylindrical portion 13 that protrudes into the mirror housing 2 from the sliding hole 22a, and a small gear 33 that meshes with the large gear 35 is arranged. Cover with 24. A reduction gear 32 and a drive motor 31 are attached to the drive shaft 3 on the top of the lid 24.
4 is arranged so as to penetrate and be fixed to the small gear 33. On the other hand, a biasing mechanism 4 consisting of a presser washer 42 of a spring 41 and a spring 41 is attached to a spring attachment portion 12c of the cylindrical portion 13 projecting upward from the lid 24, thereby holding the mirror housing 2 in pressure contact with the base 1.

The control circuit 5 of the present invention includes a power supply V and a switch SW ₁ connected to the positive terminal V ₁ and the negative terminal V ₂ of the power supply V,
A switch SW having SW ₂ , a drive motor M, a conductive plate 61 having first to fourth conductors 6a, 6b, 6c, and 6d disposed between the switch SW and the drive motor M, and terminals A to Contact terminal 5 with F
1, a diode D1 which is disposed between the terminal F of the control unit 6 and the terminal _M1 of the drive motor and allows current to flow only from the terminal F to the terminal _M1 side, and _the terminal C. and a diode _D2 that is disposed between the terminal _M1 and the terminal M1 of the drive motor and allows current to flow only from the terminal _M1 to the terminal C side.

The contact terminal 51 is connected to the external power supply V through the insertion hole 12a (FIG. 2 only shows the state in which a conductive plate 61 is attached, and the pattern in the present invention is slightly different). The conductive plate 61 constituting the control unit 6 has an axis O-- which is perpendicular to the rotation center axis of the mirror housing 2 when the mirror housing 2 is set in the normal position relative to the base 1 (FIG. 5). Approximately from O′ to either the left or right (in the example, to the right)
A fan-shaped first conductor 6a, a second conductor 6b, and these two conductors are substantially opposed to each other around the axis O-O' in the range of 255° to 15° and the range of approximately 75° to 195°. 6
A and 6b are provided with a third conductor 6c and a fourth conductor 6d provided at opposing positions between these and the center P, respectively. The first conductor 6a and the second conductor 6b are arranged so that the protruding portion provided on the second conductor 6b fits with a gap 6a'' formed in the first conductor 6a. , forming a non-conductive portion 6a'.Similarly, in the third conductor 6c and the fourth conductor 6d, the protruding portion provided on the fourth conductor 6d is connected to the third conductor 6c.
The mirror housing 2 is placed in the normal position with respect to the base 1, and the mirror housing 2 is placed in the normal position with respect to the base 1. In this case, the terminals A, B, of the contact terminals 51 of the control unit 6
C, D, E, and F are on a line of the conductor 61, with terminal A connected to the first conductor 6a, terminals B and C connected to the second conductor 6b, and terminals D and E connected to the third conductor 6c. , the terminal F is in contact with the fourth conductor 6d.

The terminal A of the contact terminal 51 of the control unit 6 is connected to the first conductor 6 of the conductive plate 61.
The terminal B is arranged to be able to contact only the first conductor 6a and the second conductor 6b, and the terminal C can be contacted only to the second conductor 6b. Further, the terminal D contacts only the third conductor 6c, and the terminal E contacts the third conductor 6c and the fourth conductor 6c.
d can be contacted, and furthermore, terminal F can be contacted with the fourth
The third conductor 6d is disposed so as to contact only the third conductor 6d, and the terminals D and E are related to each other so as to be located on the third conductor 6c.

The control circuit 5 in the above state is configured as shown in FIG. That is, the positive terminal V ₁ and the negative terminal V ₂ of the power supply V are connected to the switch SW ₁ ,
Fixed terminals 51a and 51a' of SW ₂ are connected. And closed fixed contact 5 of switch SW ₁
1b is connected to one terminal _M1 of the drive motor M,
The closed fixed contact 51a' of the switch SW ₂ is connected to the terminal A of the contact terminal 51 of the control unit 6.
It is connected to the. Also, the closed fixed contact 51c of the switch SW ₁ is also connected to the control unit 6.
Terminal D of the contact terminal 51 is connected, and the switch
The closed fixed contact 51c' of SW ₂ is the switch SW ₁
It is connected to one terminal _M1 of the drive motor M via a fixed contact 51b. Terminals B and E of the control unit 6 are each connected to the other terminal _M2 of the drive motor M, and terminal F is connected to one terminal _M1 of the drive motor via a diode D1. The diode _D2 is located between the terminal C, the switch _SW1 , and one terminal _M1 of the drive motor M, and is arranged so that no current flows from the terminal C to the one terminal _M1 of the drive motor M. has been done.

Next, the operation will be explained. In the state shown in FIG. 6 in which the mirror housing 2 is set in its normal position with respect to the base 1, a power supply V and a three-contact two-circuit switch connected to the positive terminal _V1 and negative terminal _V2 of the power supply V are connected. Fixed contacts 51a and 51 of SW ₁ and SW ₂
b, and when 51a' and 51b' are closed, the positive terminal V ₁ of the power supply V → the fixed contact 51a of the switch SW ₁ → 51b → one terminal of the drive motor M
M ₁ → Other terminal M ₂ → Control unit terminal E → D → Switch SW ₁ 's fixed contact 51c is cut off, and the same negative terminal V ₂ → Switch SW ₂ 's fixed contact 51a' → 51b' → Control unit 6
is cut off at terminal A, and drive motor M does not operate.

Here, the switch SW is changed from the solid line to the broken line, that is, from the fixed contacts 51b, 51b' to 51c, 51
c', the positive terminal V ₁ of the power supply V is the fixed contact 51a of the switch SW ₁ → 51c → the terminal D → E of the control unit 6 → the other terminal M ₂ of the drive motor M → one terminal M ₁ → Fixed contact 5 of SW ₁
1b → Fixed contact of switch SW ₂ 51c' → 51a' →
Since it is connected to the negative terminal _V2 , the drive motor M is activated to rotate the conductive plate 61 in the direction of the arrow in FIG. 5, bringing it into the state shown in FIG.

A little before reaching this point in FIG. 7, that is, at the moment when the terminal E leaves the third conductor 6c and moves to the non-conductive part 6d', the connection between the terminals D and E of the control unit 6 is cut and the drive motor M is connected. current is cut off. However, in this case, the drive motor M does not suddenly stop due to inertia but rotates slightly, resulting in the state shown in FIG. 7. At this time, the terminal E of the control unit is connected to the fourth conductor 6 along with the contact F.
d, so the drive motor M is connected to the other terminal M ₂
-> Terminal E of control unit 6 -> F -> Diode D ₁ -> One terminal M ₁ of drive motor M Since it is short-circuited, an induced current flows in drive motor M, and drive motor M self-brakes and stops.

When the switch SW is switched from the solid line to the broken line, that is, from the fixed contacts 51c, 51c' of the switches SW ₁ and SW ₂ to 51b, 51b _' from the state shown in FIGS. 7 and 8, the _positive terminal of the power supply V is fixed. Contact 51a→
51b → One terminal M ₂ of drive motor M → Other terminal M ₂ → Terminal B → A of control unit 6
→ Fixed contact 51b of SW ₂ → 51a → Negative terminal V ₂ and the flow returns to the original state, that is, the state shown in FIG. 5.

A little before reaching the state shown in FIG. 5, that is, at the moment when the terminal B leaves the second conductor 6b and moves to the non-conductive part 6a', the terminal A of the control unit 6
and B are disconnected, and the current to the drive motor M is cut off. However, even in this case, the drive motor M rotates slightly due to inertia without suddenly stopping, resulting in the state shown in FIG. 5. At this time, since the terminal B of the control unit is on the second conductor 6b together with the contact C, the drive motor M connects one terminal M ₁ → diode D ₂ → control unit 6.
Since terminal C→B→one terminal _M2 of drive motor M is short-circuited, an induced current flows in drive motor M, and drive motor M self-brakes and stops.

Therefore, the dimensions of the second conductor 6b and the fourth conductor 6d of the conductor 61 may be used to determine the amount of operation necessary for tilting the mirror housing 2 through this operation.

Furthermore, the diodes D ₁ and D ₂ are used to prevent short-circuiting of the power supply V when moving from a stopped state to an operating state.

<<Effects of the invention>> 1. The mirror housing 2 can be tilted to any position with respect to the base 1 with an extremely simple configuration using the power supply _V , switch SW, control unit 6, drive motor M, and diodes D ₁ and D 2. This makes it easier to ship and store in a garage.

2 Conductive plate 6 due to inertia when the drive motor M stops
The mirror housing can be tilted and held in a predetermined position by self-braking the overrun of the mirror housing.

3 The diodes D ₁ and D ₂ prevent the power supply V from short-circuiting when transitioning to the stop state, and the drive motor M
can operate reliably.

[Brief explanation of the drawing]

Figure 1 is a partially cutaway front view of a folding door mirror equipped with the control circuit of the present invention, and Figure 2 is a partially cutaway front view of a folding door mirror equipped with the control circuit of the present invention.
3 is a sectional view taken along line BB in FIG. 2, FIG. 4 is a sectional view taken along line C-C in FIG. 3, and FIG. 6 is a plan view showing the arrangement in the normal position, FIG. 6 is a control circuit diagram in FIG. 5, FIG. 7 is a plan view showing the arrangement of the conductors in a state where the mirror housing is tilted in FIG. The figure shows the control circuit in FIG. 7. DESCRIPTION OF SYMBOLS 1... Base (fixed member), 2... Mirror housing (rotating member), 3... Drive mechanism, 5... Control circuit, 51... Contact terminal, 6... Control unit, 61... Conductor, 6a...first conductor, 6b...second conductor, 6c...third conductor,
6d...Fourth conductor, A~F...Terminal, SW...
Switch, SW ₁ ... First switch, SW ₂ ... Second switch, D ₁ ... First diode, D ₂ ...
2nd diode, M...motor, V...power supply,
V ₁ ... Positive terminal, V ₂ ... Negative terminal, O-O' ... Axis perpendicular to the rotation center axis of the mirror housing 2.

Claims (1)

[Scope of utility model registration request] The mirror housing 2, which is a rotating member, is set relative to the base 1, which is a fixed member, between a normal position in which it protrudes in the lateral direction of the side of the vehicle body, and a tilted position that is substantially along the side of the vehicle body, using a drive motor M. A control device for a type door mirror, which includes a power supply V, a drive motor M, a positive terminal V ₁ and a negative terminal V ₂ of the power supply V.
a first switch SW ₁ and a second switch SW ₂ connected to the first switch SW 1 and the second switch SW 2;
A control unit 6 is disposed between SW ₁ , SW ₂ and the drive motor M, and one end is connected to the control unit 6 and the other end is connected between the drive motor M and the first switch SW ₁ . the first diode D ₁ and the second diode D ₂
The control unit 6 comprises:
attached to the base 1 side and the first to fourth conductors 6;
a, 6b, 6c, and 6d, and the conductive plate 61 is attached to the mirror housing 2 side so as to be in rotational contact with the conductive plate 61, and when the mirror housing 2 is in its normal position, the conductive plate 61 Terminal A contacts the first conductor 6a, terminals B and C contact the second conductor 6b, terminals D and E contact the third conductor 6c, and contact the fourth conductor 6d. The first diode _D1 is connected between the terminal F of the contact terminal 51 of the control unit 6 that contacts the fourth conductor 6d and the drive motor M. terminal F
The second diode _D2 is connected to allow current to flow only from the side to the drive motor M side, and the second diode D2 allows current to flow from the terminal C side that contacts the second conductor 6b of the control unit 6 to the drive motor M side. The first conductor 6a and the third conductor 6c of the conductive plate 61 are connected between the terminal C and the drive motor M to be disconnected, and each of the first conductor 6a and the third conductor 6c of the conductive plate 61 has a fan-like shape. In the normal position of the mirror housing, the conductor 6a moves from approximately 255 degrees in one direction to the left or right to 15 degrees in the other direction with respect to a line from the axis O-O' perpendicular to the central axis of rotation of the mirror housing 2 to the center point P. ° range, and the third conductor 6c has an axis O that is orthogonal to the rotation center axis of the mirror housing 2 in the normal position of the mirror housing.
The second conductor 6b and the fourth The conductor 6d is disposed on the base 1 facing the first conductor and the third conductor, and the first conductor 6a and the second conductor 6b are provided on the second conductor 6b. The terminal 51B is connected to the terminal 51B immediately before the drive motor M stops in the process of the mirror housing 2 being brought into its normal position from when the mirror housing 2 is tilted, with the protruding portion being fitted into a notch formed in the first conductor 6a with a gap therebetween.
The third conductor 6c and the fourth conductor 6d are arranged so as to be separated by a non-conductive part 6a' formed so that the third conductor 6c passes through the fan-shaped recess formed in the fourth conductor 6d. are fitted with a gap and are disposed across a non-conductive portion 6d' formed so that the terminal 51E passes immediately before the drive motor M stops in the process of tilting the mirror housing 2 from its normal position; The drive motor M is controlled by the conductive plate 61 of the control unit 6.
When the terminals B and C are stopped, the terminals B and C are connected to the second conductor 6.
b to short-circuit between the drive motor M and the positive terminal _V1 of the power source via the first diode _D1 , or connect the terminals 6E and 6F by a fourth conductor 6d. A folding door mirror characterized in that the drive motor M and the positive terminal _V1 of the power source are short-circuited via the second diode _D2 to self-brake the inertia force of the drive motor M. control device.