JP2569164Y2 - Mirror for electric folding vehicle - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mirror for an electric folding vehicle.

[0002]

2. Description of the Related Art A mirror for an electric folding type vehicle is usually provided in a fixed shaft fixed to a vehicle body, a mirror housing rotatably mounted on the fixed shaft, and inside the mirror housing. It comprises a drive mechanism for tilting the mirror housing to the storage position or the use position.

[0003] Such an electric folding type vehicle mirror is provided with a tilt control unit for stopping the tilting mirror housing at the storage position and the use position.
(For example, Japanese Patent Application No. 62-189675)

This tilt control section is provided with a total of two switches each having two terminals on a substrate fixed to the mirror housing side, and a plate member fixed to the fixed shaft side for the two switches. Between the two, around the plate member
Each switch is provided with a cam surface that can freely contact the switch. For example, if a switch in the vehicle compartment is pushed at the use position of the mirror housing, the mirror housing tilts, and the cam surface also rotates. (At this time, the terminal of the other switch is in a contact state.) When the switch is pressed again from this state, the mirror housing tilts to the opposite side, and the terminal of the other switch is separated to use the mirror housing. Stop at the position. (At this time, the terminal of one switch is in a contact state.)

[0005]

However, in such a mirror for an electric folding type vehicle, since two switches are provided, the number of parts increases, and it is difficult to set the storage position and the use position. Further, there is a disadvantage that it is not preferable in terms of space to arrange two switches in a mirror housing having only a limited space.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a fixed shaft fixed to a vehicle body, a mirror housing rotatably mounted on the fixed shaft, and a mirror housing mounted on a front side. A drive mechanism for tilting to a use position or a rear storage position, a first member fixed to one of the fixed shaft and the mirror housing, a second member fixed to one of the other, and a switch attached to the first member. The tilting of the mirror housing is stopped at a predetermined use position or a storage position by a switch in accordance with the relative rotation of the first and second members. It comprises a first fixed terminal and a second fixed terminal attached to a member, and one movable terminal disposed between the first and second fixed terminals.
The movable terminal is engaged with a cam groove provided in the member, and the cam terminal guides the movable terminal with the relative rotation of the first and second members, and the movable terminal is brought into contact only with the first fixed terminal. The first groove for stopping the mirror housing at the use position, and the movable terminal
A second groove for contacting both of the second fixed terminals and a third groove for stopping the mirror housing at the storage position by contacting the movable terminal only to the second fixed terminal, in this order; The first groove is maintained in a state in which the movable terminal abuts only on the first fixed terminal even when the mirror housing stopped at the use position is rotated in a direction away from the storage position by an external force . It is characterized by having a groove.

[0007]

(1) Two fixed terminals (first and second fixed terminals)
One movable terminal is disposed between the two terminals, and when the movable terminal is switched from a state in which only the first fixed terminal is in contact with the second fixed terminal to a state in which the movable terminal is in contact with only the second fixed terminal, or in an opposite state. At this time, the movable terminal is guided by the cam groove with the relative rotation of the first and second members so as to pass through a state in which the movable terminal comes into contact with both the first and second fixed terminals. Therefore, it is only necessary to provide one switch for stopping the mirror housing at the use position or the storage position, and since this switch is composed of only two fixed terminals and one movable terminal, the number of parts is reduced. It has a small and simple configuration. Furthermore, since only one small switch is arranged, the space for arrangement is small. (2) The direction in which the mirror housing stopped at the use position in the first groove among the cam grooves is separated from the storage position by an external force.
The groove is used to maintain a state in which the movable terminal is brought into contact with only the first fixed terminal even when the movable terminal rotates. For this reason,
The direction in which the mirror housing moves away from the retracted position when an external force acts on the mirror housing in the use position in the front of the vehicle.
Even when pivoted, it can be tilted by the driving mechanism of the mirror housing rearwardly.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 10 is a partially cutaway front view of a mirror for an electric folding type vehicle, in which B is a base member fixed to the vehicle body, 1 is a fixed shaft fixed to the base member B, and 3 is a fixed shaft. With a bracket, the bracket 3 supports a mirror (not shown) on the front side and a mirror housing 4 on the rear side, as is known.

A cylindrical portion 5 is formed on the inner end side of the bracket 3, and the cylindrical portion 5 is inserted through the fixed shaft 1 so that the bracket 3 is rotatable in the front-rear direction of the vehicle body (perpendicular to the paper).
A plurality of holes 5a... Are formed around the axis of the fixed shaft 1 on the lower surface of the cylindrical portion 5 of the bracket 3, and the steel balls 7 are fitted into these holes 5a so as not to be detached.

A flat portion 1a is formed below the fixed shaft 1, and a plurality of holes 1b are formed on the upper surface of the flat portion 1a around the axis of the fixed shaft 1. The steel ball 7 is engaged with one of the holes 1b..., And the use position, the storage position, and the forward tilt position of the mirror housing 4 are maintained by this engagement. This engagement is maintained by the elasticity of a spring 15 described later.

A ring-shaped guide gear 9 is rotatably fitted above the bracket 3 of the fixed shaft 1, and an engagement ring 10 is fitted above this guide gear 9. The engagement ring 10 is keyed to the fixed shaft 1 by a ball 18 to be described later, and cannot rotate with respect to the fixed shaft 1 and can move up and down.

A plurality of holes 10a are formed on the lower surface of the engagement ring 10 around the axis of the fixed shaft 1.
The steel ball 12 is fitted to the wire 0a in a non-removable manner. Also, the guide gear 9
Are formed on the upper surface of the fixed shaft 1 around the axis of the fixed shaft 1, and the steel ball 12 is engaged with any of the holes 9a. The steel ball 12 and the hole 9a constitute an overload prevention clutch.

A retainer 14 is fitted on the upper portion of the fixed shaft 1, and the upward movement of the retainer 14 is restricted by a circlip 15. A spring 15 is provided between the retainer 14 and the engagement ring 10.
With the elasticity of 5, the engagement between the steel ball 12 and the hole 9a is maintained.

In the upper half of the fixed shaft 1, a plurality of long grooves 17 in the vertical direction are formed, and small-diameter balls 18 are arranged in these grooves. The ball 18 is for reducing frictional resistance when the engagement ring 10 moves up and down.

A tapered surface 5b is formed on the upper surface of the cylindrical portion 5 of the bracket 3, and small-diameter balls 20 are arranged between the tapered surface 5b and the guide gear 9. The elasticity of the spring 15 acts perpendicularly to the tapered surface 5b via the ball 20, whereby the bracket 3 is stably supported on the fixed shaft 1.

A motor M supported by the bracket 3 is provided above the fixed shaft 1. The rotating shaft of the motor M is connected to a final reduction gear 22 via a reduction gear (not shown). The final reduction gear 22 meshes with the outer periphery of the guide gear 9, and the center shaft 22a of the final reduction gear 22 has a lower end supported on the upper surface of the bracket 3 and an upper end extending upward. It engages with a hole 31c formed in the flange 31b of the motor 31 and is supported by a recess provided in the motor mounting base.

At the upper end of the fixed shaft 1, a tilt control unit 24 is provided. The tilt control unit 24 includes a first member 31 and a second member 3.
2 are combined to form one box-shaped unit.

FIG. 1 is a plan view of the first member 31, and FIG.
1 in a state where the member 31 and the second member 32 are combined.
3 is a plan view of the second member 32. FIG.

The first member 31 has a box shape with an open bottom, and has a substantially rectangular shape with a semicircle at one end in plan view. A hole 31a is formed at the center of the first member 31, a flange 31b extending outward is provided at an end, and an engagement hole 31c is formed in the flange 31b. The upper end of the central shaft 22a of the final reduction gear 22 is inserted into the engagement hole 31c, and thus the first member 31 is positioned on the housing side.

On the lower surface of the first member 31, a diode 33,
34, and the diode 33 is attached to the lower surface of the first member 31 with fasteners 35 and 36 as shown in FIGS. That is, the fastener 3 is attached to one end of the diode 33.
5 is fitted (see FIG. 4), and similarly, the other end of the diode 33 is fitted with the tubular portion 36a of the fastener 36, and the tips of the fasteners 35, 36 are connected to the first member 31.
Is inserted from below into a hole (not shown) formed at the same time, and the claw portions 35b, 36b at the tips are expanded and locked on the upper surface of the first member 31. Similarly, the diode 34 is connected to the fastener 36,
In this embodiment, the fastener 36 has two tubular portions. As described above, one tubular portion 36a has the diode 33 and the other tubular portion (not shown) has the diode 34.
Support each.

As shown in FIG.
The second fixed terminal 38 is provided integrally, and the
7, a first fixed terminal 39 is integrally provided. 4 in FIG.
0,41,42 is pressing member fixed terminals 38 and 39, 43 swing and the in Figure 1 under direction of the second fixed terminal 38
1 are stoppers for restricting the upward swing of the fixed terminal 39 in FIG.

A movable terminal 46 is attached to the first member 31 via a fastener 45, and an engaging portion 46a of the movable terminal 46 has an upper portion having the fixed terminal 38, as shown in FIG.
The lower side engages with the cam groove 48 of the second member 32 as shown in FIG. As shown in FIG. 3, the cam groove 48 is formed by changing the distance from the center of the second member 32 to the first groove 4.
8a, the second groove 48b, and a third groove 48c, in this order
It is a groove provided continuously. The fixed terminal 38, 39 and the movable terminal 46 constitute a switch 50.

As shown in FIG. 1, the movable terminal 46 is connected to a thermistor 53 via a lead wire 52, and a lead wire 54 extending from the thermistor 53 is connected to a motor M via a harness.

In FIG. 1, reference numerals 56 and 57 denote members for holding the movable terminal 46.

FIG. 6 is a circuit diagram showing diodes 33 and 3
4 (movable terminal 46 is fixed terminal 3 while motor M is operating)
And a harness 61 extending from the motor M. A harness 61 extending from the motor M and a harness 61 extending from the motor M are connected to a power supply (not shown) via a polarity switching circuit. Connected to.

As shown in FIG. 3, the second member 32 has a hole 32a formed at the center thereof, and a part of the hole 32a is a straight portion 32b. The hole 32 of the second member 32
a is fitted to the upper end of the fixed shaft 1, and the linear portion 32b of the hole 32a
Engages with a linear portion (not shown) formed on the outer periphery of the fixed shaft 1, so that the second member 32 cannot rotate with respect to the fixed shaft 1.

At the peripheral edge of the second member 32, a plurality of steps 31d formed at the lower peripheral edge of the first member 31 abut (see FIG. 2), and upward from the peripheral edge of the hole 32a of the second member 32. A claw 32d is formed at the upper end of the plurality of protrusions 32c provided upright, and this claw 32d is engaged with the upper part of the periphery of the hole 31a of the first member 31 (see FIG. 5).

The first member 31 and the second member 32 are assembled in this manner. At this time, the first member 31 is rotatable with respect to the second member 32.

Reference numeral 63 shown in FIG. 10 denotes a case surrounding the motor M, the reduction gear, the fixed shaft 1, and the like.

Next, the operation of the above-mentioned electric folding type vehicle mirror will be described. First, in a normal state, the mirror housing 4 is in the use position C shown by the solid line in FIG. 9, and the engaging portion 46a of the movable terminal 46 is in the position shown in FIG.
In this state, the engaging portion 46a is displaced in the direction A in FIG. 1, and the movable terminal 46 is in contact with only the first fixed terminal 39 as shown in FIG.

When a switch in the passenger compartment is pressed in this state, a current flows in the direction P in FIG.
4, first fixed terminal 39, movable terminal 46, thermistor 5
3, the motor M is operated.

When the motor M operates, the rotation of the motor M is transmitted to the final reduction gear 22 via the reduction gear. At this time, the guide gear 9 is engaged with the steel ball 12 and the hole 9a to fix the fixed shaft 1
, The final reduction gear 22 revolves while rotating around the outer periphery of the guide gear 9.

Since the lower end of the center shaft 22a of the final reduction gear 22 is engaged with the upper surface of the bracket 3,
Rotates about the fixed shaft 1 in the direction perpendicular to the paper surface, and accordingly, the mirror housing 4 also tilts integrally with the bracket 3, and the mirror housing 4 eventually stops at the storage position (D position in FIG. 9).

When the bracket 3 rotates, the steel ball 7 is turned into the hole 1b.
And the steel ball 7 slides on the upper surface of the plane portion 1a,
At the storage position of the mirror housing 4, it engages with another hole 1b.

When the mirror housing 4 rotates from the use position C to the storage position D, the central shaft 22a moves in the revolving direction of the gear 22 by the revolution of the final reduction gear 22. Since the central shaft 22a is engaged with the hole 31c formed in the flange 31b of the first member 31, the first member 31
At the same time, it rotates about the fixed shaft 1. At this time, the second member 3
2 is fixed to the fixed shaft 1 so that the first member 31
It also rotates with respect to the member 32. Then, the engaging portion 46a of the movable terminal 46 moves in the direction F from the position A in FIG. 3 and enters the second groove 48b. The second groove 48b is deviated inward from the position A, that is, toward the fixed shaft 1, the engaging portion 46a is deviated in the direction B in FIG. As shown in FIG. 6, both fixed terminals 38 and 39 are in contact with each other.

When the mirror housing 4 reaches the storage position D, the engaging portion 46a enters the third groove 48c and is located at a position B in FIG. Since this position B is close to the fixed shaft 1, the engaging portion 46a
Again direction, i.e. displaced in the B direction in FIG. 1, the movable terminal 46 as shown in FIG. 8 away from the first fixed terminal 39, the second
It contacts only the fixed terminal 38 .

Next, when the switch in the vehicle interior is pressed again from the state where the mirror housing 4 is in the storage position D, the movable terminal 46 is pressed.
And the second fixed terminal 38 are in contact with each other.
Current flows in the direction. As a result, the motor M rotates in the reverse direction, the final reduction gear 22 revolves while rotating in the direction opposite to the above, and the mirror housing 4 moves from the storage position D to the use position C.
Tilt in the direction. At the same time, the steel ball 7 is detached from the hole 1b, and the engaging portion 46a of the movable terminal 46 is moved from the third groove 48c to the second groove 48c.
Into the groove 48b. At this time, the engaging portion 46a is at the first fixed end.
It contacts both the terminal 39 and the second fixed terminal 38 .

[0039] When the mirror housing 4 reaches the use position C engaging portion 46a returns to the position of the i of FIG. 3, the engagement portion 46a as described above the first fixed end in a state shown in FIG. 7
Contact only child 39 .

When an external force is applied to the mirror housing 4 at the position where the mirror housing 4 is used, the steel ball 12 is removed from the hole 9a and the mirror housing 4 is moved.
Is tilted to the forward tilt position E. At this time, the engaging portions 46a
Enters the first groove 48a. In the forward tilt position E, the first fixed terminal 39 and the movable terminal 46 are in contact with each other. In this state, if a switch in the vehicle compartment is pressed, a current flows in the direction P in FIG. I do. like this
In addition, the first groove 48a is formed so that the mirror housing 4 is in the use position C.
Even if the terminal is further turned forward from
Is kept in contact with the first fixed terminal 39 only.
It is a groove that plays a role.

As described above, in this embodiment, when the mirror housing 4 is tilted, the engaging portion 46a of the movable terminal 46 is displaced via the cam groove 48, whereby the engaging portion 46a is
Since the fixed terminals 38 and 39 are brought into contact with and separated from each other, the position of the mirror housing 4 can be controlled by one switch including the movable terminal 46 and the fixed terminals 38 and 39.

Therefore, it is not necessary to provide two switches in the mirror housing as in the conventional case, and the number of parts of the tilt control unit can be reduced, the assembly can be simplified, the structure can be simplified, and the size can be reduced.

[0043]

As described above, according to the present invention , (1) between one fixed terminal (first and second fixed terminals)
Two movable terminals, and this movable terminal is used as the first fixed terminal.
Only the second fixed terminal is brought into contact with the second fixed terminal
When switching to the opposite state, or when switching to the opposite state
And a state in which it is in contact with both the first and second fixed terminals.
As described above, the cam groove is formed with the relative rotation of the first and second members.
To guide the movable terminal. For this reason,
To stop the housing at the use position or storage position
Only one switch is required.
Switch with only two fixed terminals and one movable terminal
Small switch with simple structure with few parts
Can be provided. Easy switch assembly
become. In addition, only one small switch
Thus, the space for arrangement can be reduced. Even better
One of two fixed terminals and one movable terminal
Switch position alone and mirror housing position and storage
Since the position is set, the position setting is easy. In addition, large set of folding angle corner at one cam groove also do not overlap the cam groove as in the case of providing two switches. Further
In, simply by replacing the second member provided with a cam groove, can be shared first member for take the easy folding angle was in each model.

(2) When the first groove of the cam grooves is used,
If the stopped mirror housing is in the retracted position due to external force
The groove is used to maintain a state in which the movable terminal is brought into contact only with the first fixed terminal even when the movable terminal is turned away from the movable terminal. As a result, an external force acts on the mirror housing in the use position toward the front of the vehicle, and the mirror housing is moved to the storage position.
Even when the mirror housing is turned in a direction away from the mirror housing, the mirror housing can be tilted backward by the drive mechanism.

[Brief description of the drawings]

FIG. 1 is a plan view of a first member.

FIG. 2 shows the state of FIG. 1 in a state where a first member and a second member are combined.
2-2 line sectional view

FIG. 3 is a plan view of a second member.

FIG. 4 is a perspective view of a diode.

FIG. 5 is a sectional view taken along line 5-5 of FIG. 2;

FIG. 6 is a circuit diagram for tilting the mirror housing.

FIG. 7 illustrates a movable terminal and a movable terminal in a use position of a mirror housing .
1 shows the contact state of the fixed terminal

FIG. 8 shows the movable terminal in the retracted position of the mirror housing and the movable terminal .
Diagram showing the contact state of the two fixed terminals

FIG. 9 is a plan view of an automobile.

FIG. 10 is a partially cutaway front view of an electric folding vehicle mirror.

[Description of Signs] 1 ... fixed shaft, 4 ... mirror housing, 24 ... tilt control
Part, 31: first member, 32: second member, 38: second fixing
Terminal, 39: first fixed terminal, 46: movable terminal, 48: power
Groove, 48a: first groove, 48b: second groove, 48c: third
Groove, 50 ... Switch, M ... Motor.

Claims (1)

(57) [Scope of request for utility model registration] 1. A fixed shaft fixed to a vehicle body, a mirror housing rotatably mounted on the fixed shaft, a driving mechanism for tilting the mirror housing to a front use position or a rear storage position, A first member fixed to one of the fixed shaft and the mirror housing; a second member fixed to the other; and a switch attached to the first member. With the rotation,
In an electric folding type vehicle mirror for stopping tilting of a mirror housing at a predetermined use position or a storage position by a switch, the switch comprises: a first fixed terminal and a second fixed terminal attached to the first member; A movable terminal disposed between the first and second fixed terminals; the movable terminal is engaged with a cam groove provided in the second member; A first groove that guides the movable terminal with the relative rotation of the second member, abuts the movable terminal only on the first fixed terminal, and stops the mirror housing at the use position; A second groove for contacting both the first and second fixed terminals and a third groove for stopping the mirror housing at the retracted position by allowing the movable terminal to contact only the second fixed terminal are successively arranged in this order. The groove provided in the The one groove maintains a state in which the movable terminal abuts only on the first fixed terminal even when the mirror housing stopped at the use position is rotated in a direction away from the storage position by an external force . An electric folding vehicle mirror characterized by being a groove.