JPH04122246U - Electrically foldable vehicle mirror - Google Patents

Abstract

(57) [Summary] [Purpose] To miniaturize the tilt control unit of an electric folding vehicle mirror, reduce the number of parts, and simplify the structure. [Configuration] The tilt control unit switch has two fixed terminals and one
The movable terminal is engaged with a cam groove, and when the mirror housing is tilted, the movable terminal is deflected through the cam groove, and is brought into contact with and released from the two fixed terminals to adjust the position of the mirror housing. Control. Therefore, the position of the mirror housing can be controlled with one switch consisting of the movable terminal and two fixed terminals, eliminating the need for two switches as in the past, reducing the number of parts in the tilt control unit, simplifying the structure, and making it more compact. It is possible to aim for

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

The present invention relates to an electrically foldable vehicle mirror.

0002

[Conventional technology]

Electrically foldable vehicle mirrors usually have a fixed shaft fixed to the vehicle body and a shaft that corresponds to the fixed shaft. a mirror housing rotatably assembled, and a mirror housing provided within the mirror housing; Consists of a drive mechanism that tilts the mirror housing to the storage position or use position. be done.

0003 And in such electrically foldable vehicle mirrors, the tilting mirror housing It is equipped with a tilt control unit to stop the rod in the storage position and the use position. (example (Japanese Patent Application No. 62-189675)

0004 This tilt control unit is connected to two terminals on a board fixed to the mirror housing side. A total of two switches are provided, one each, and the plate member fixed to the fixed shaft side is the two switches. between the two switches, and a cover that can freely come into contact with the two switches around the plate member. It is constructed by providing a side surface. For example, in the vehicle interior at the position where the mirror housing is used. When you press the switch inside, the mirror housing tilts, and the cam surface also rotates. , Due to the action of this cam surface, the terminals of one switch are separated and the mirror housing is retracted. The switch will stop at this position (at this time, the terminals of the other switch will be in contact). Also, this If you press the switch again from this state, the mirror housing will tilt to the opposite side, and the other switch will tilt. The switch terminals are separated and the mirror housing stops at the use position (at this time, one (The switch terminals will be in contact).

[0005]

[Problem that the idea aims to solve]

However, such electrically foldable vehicle mirrors are equipped with two switches. This increases the number of parts and makes it difficult to set the storage position and usage position. There is. In addition, two switches are installed inside the mirror housing, which has limited space. There is a problem in that it is not desirable due to space considerations.

[0006]

[Means to solve the problem]

In order to solve the above problems, the present invention has a fixed shaft fixed to the vehicle body and a The mirror housing is rotatably assembled with the A drive mechanism that tilts the mirror housing to the storage position or use position, and a mirror housing. An electrically foldable vehicle mirror consisting of a tilting control unit that controls the tilting of the uzing. The tilt control section is fixed to either the fixed shaft or the mirror housing. a first member fixed to the other, a second member attached to the first member; and a switch that stops the tilting of the mirror housing at a predetermined position. The switch has two fixed terminals attached to the first member, and these two fixed ends. The movable terminal is disposed between the two members and engages with a cam groove formed in the second member. , as the mirror housing tilts, the movable terminal is moved to one of the two fixed terminals. It is characterized by moving the switch to activate the switch.

[0007]

[Effect]

When the mirror housing is tilted, the movable terminal is deflected through the cam groove, and the housing When the terminal reaches the use position or storage position, the movable terminal comes into contact with one fixed terminal side. With this, the mirror housing is released from contact with the other fixed terminal, and the position of the mirror housing is adjusted. controlled. Therefore, with one switch consisting of a movable terminal and a fixed terminal, the mirror housing can be It is now possible to control the position of the mirror. Eliminates the need to provide two switches, reducing the number of parts and structure of the tilt control unit It is possible to achieve simplification, miniaturization, and ease of assembly.

[0008]

【Example】

A preferred embodiment of the present invention will be described below with reference to the accompanying drawings.

[0009] Figure 10 shows a partially cutaway front view of an electrically foldable vehicle mirror. A fixed base member, 1 a fixed shaft fixed to this base member B, 3 a bracket The bracket 3 supports a mirror (not shown) on the front side as is known; The mirror housing 4 is also supported on the rear side.

0010 A cylindrical portion 5 is formed on the inner end side of the bracket 3, and this cylindrical portion 5 is attached to the fixed shaft 1. By inserting the bracket 3, the bracket 3 can be freely rotated in the longitudinal direction of the vehicle body (in the direction perpendicular to the paper). or, A plurality of holes 5a are formed on the lower surface of the cylindrical portion 5 of the bracket 3 around the axis of the fixed shaft 1. Then, the steel ball 7 is irremovably fitted into this hole 5a.

[0011] A flat part 1a is formed at the lower part of the fixed shaft 1, and a fixed part is formed on the upper surface of this flat part 1a. A plurality of holes 1b are formed around the axis of the shaft 1. The above hole 1b... The steel ball 7 engages, and this engagement allows the mirror housing 4 to be moved to its use position, storage position, and forward tilt. The reclined position is maintained. This engagement is maintained by the elasticity of a spring 15, which will be described later. .

0012 A ring-shaped guide gear 9 is rotatable above the bracket 3 of the fixed shaft 1. An engagement ring 10 is fitted above the guide gear 9. Engagement ring The gear 10 is keyed to the fixed shaft 1 with a ball 18, which will be described later. It cannot rotate and can move up and down.

[0013] 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 irremovably fitted into the hole 10a. Also, on the guide gear 9 A plurality of holes 9a... are formed in the surface around the axis of the fixed shaft 1, and any of the holes 9a... The steel balls 12 engage with each other. An overload prevention clutch is constructed with this steel ball 12 and hole 9a. to be accomplished.

[0014] A retainer 14 is fitted to the upper part of the fixed shaft 1, and this retainer 14 is attached to the servo. The clip 15 restricts upward movement. Retainer 14 and engagement ring 10 A spring 15 is provided between the steel ball 12 and the hole due to the elasticity of the spring 15. 9a.

[0015] A plurality of long grooves 17 in the vertical direction are formed in the upper half of the fixed shaft 1, and small grooves 17 are formed in the grooves 17 in the vertical direction. A ball 18 of the same diameter is arranged. This ball 18 is used when the engagement ring 10 moves up and down. This is to reduce frictional resistance.

[0016] Further, a tapered surface 5b is formed on the upper surface of the cylindrical portion 5 of the bracket 3, and this tapered surface A small diameter ball 20 is placed between the guide gear 9 and the guide gear 9. The spring 15 The elasticity acts perpendicularly to the tapered surface 5b via this ball 20, thereby causing the brush to The bracket 3 is stably supported on the fixed shaft 1.

[0017] 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 the final reduction gear 22 via a reduction gear (not shown). Ru. The final reduction gear 22 meshes with the outer periphery of the guide gear 9. The lower end of the central shaft 22a of the gear 22 is supported by the upper surface of the bracket 3, and the upper end is directed upward. It extends and engages with a hole 31c formed in a flange 31b of the first member 31, which will be described later. It is also supported by a recess provided in the motor mounting base.

[0018] A tilt control section 24 is provided at the upper end of the fixed shaft 1, and this tilt control section 24 is connected to the first section. The material 31 and the second member 32 are combined to form one box-shaped unit. Ru.

[0019] FIG. 1 is a plan view of the first member 31, and FIG. 2 is a combination of the first member 31 and the second member 32. 2-2 line sectional view of Figure 1 in the state, Figure 3 shows a plan view of the second member 32. FIG.

[0020] The first member 31 has a box shape with an open bottom, and one end is semicircular in plan view. It has a roughly rectangular shape. A hole 31a is formed in the center of this first member 31, and the end A flange 31b extending outward is provided at the portion, and an engagement hole 31 is provided in this flange 31b. form c. This engagement hole 31c has an upper end of the central shaft 22a of the final reduction gear 22. is inserted, so that the first member 31 is positioned on the housing side.

[0021] Diodes 33 and 34 are arranged on the lower surface of the first member 31, and the diode 33 is 1. Attach to the bottom surface of the first member 31 with fasteners 35 and 36 as shown in Figures 2 and 4. Let's go. That is, the cylindrical portion 35a of the fastener 35 is fitted to one end of the diode 33 (see FIG. 4), similarly fit the cylindrical portion 36a of the fastener 36 to the other end of the diode 33. The tips of these fasteners 35 and 36 are connected to holes formed in the first member 31 (not shown). ) from below, and insert the claws 35b and 36b at the tips onto the top surface of the first member 31. Expand and lock. Similarly, attach the diode 34 with fasteners 36 and 37, and In the embodiment, the fastener 36 has two cylindrical portions, one of which is cylindrical as described above. 36a supports the diode 33, and the other cylindrical part (not shown) supports the diode 34. do.

[0022] The fastener 35 is integrally provided with a fixed terminal 38 as shown in FIG. A fixed terminal 39 is integrally provided on the fastener 37. 40, 41, 42 in Figure 1 43 is a holding member for the fixed terminals 38 and 39, and 43 is a member for holding down the fixed terminal 38 in the downward direction in FIG. This is a stopper that restricts the upward swing of the fixed terminal 39 in FIG. 1, respectively.

[0023] A movable terminal 46 is attached to the first member 31 via a fastener 45. As shown in FIG. 1, the engaging portion 46a of the movable terminal 46 has an upper side that is connected to the fixed terminals 38, 39. The lower side engages with the cam groove 48 of the second member 32 as shown in FIG. . The cam groove 48 is a first groove whose distance from the center of the second member 32 is changed as shown in FIG. 48a, a second groove 48b, and a third groove 48c. The fixed terminals 38, 39 and The dynamic terminal 46 constitutes a switch 50.

[0024] The movable terminal 46 is connected to a thermistor 53 via a lead wire 52 as shown in FIG. A lead wire 54 extending from the thermistor 53 is connected to the thermistor 53 via a harness. Connect to motor M.

[0025] In addition, 56 and 57 in FIG. 1 are holding members for the movable terminal 46.

[0026] FIG. 6 shows a circuit diagram, in which the diodes 33, 34 (movable terminals Even if 46 is in contact with both fixed terminals 38 and 39, it is designed to allow current to flow in only one direction. a harness 60 extending from the motor M) and a harness 60 extending from the motor M; The wire 61 is connected to a power source (not shown) via a polarity switching circuit.

[0027] As shown in FIG. 3, the second member 32 has a hole 32a formed in the center. A portion of the hole 32a is a straight portion 32b. The hole 32a of this second member 32 is It fits into the upper end of the fixed shaft 1, and the straight part 32b of the hole 32a forms a straight line formed on the outer periphery of the fixed shaft 1. The second member 32 is engaged with a wire portion (not shown), so that the second member 32 cannot rotate with respect to the fixed shaft 1. It has become.

[0028] A plurality of stepped portions 3 are formed on the lower peripheral edge of the first member 31 at the peripheral edge of the second member 32. 1d... comes into contact with each other (see FIG. 2), and also rises upward from the periphery 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, and this claw 32d is connected to the first It is engaged with the upper part of the periphery of the hole 31a of the member 31 (see FIG. 5).

[0029] The first member 31 and the second member 32 are assembled in this way, and at this time, the first member 31 is rotatable relative to the second member 32.

[0030] In addition, 63 shown in Fig. 10 is a case surrounding the motor M, reduction gear, fixed shaft 1, etc. It is

[0031] Next, the operation of the above-mentioned electrically foldable vehicle mirror will be explained. First, under normal conditions, the mirror housing 4 is in the use position C shown by the solid line in FIG. The engaging portion 46a of the movable terminal 46 is in the position shown in FIG. 3A. In this state The engaging portion 46a is displaced in the direction A in FIG. 1, and the movable terminal 46 is fixed as shown in FIG. It is in contact only with terminal 39.

[0032] When the switch inside the vehicle is pressed from this state, current flows in the direction of P in Figure 6, and this electric current flows in the direction of P in Figure 6. The current flows through the diode 34, fixed terminal 39, movable terminal 46, and thermistor 53. The current flows to motor M, and motor M operates.

[0033] When the motor M operates, the rotation of the motor M is transferred to the final reduction gear 2 via the reduction gear. 2. At this time, the guide gear 9 engages with the steel ball 12 and the hole 9a, and The final reduction gear 22 rotates around the outer periphery of the guide gear 9. revolve.

[0034] The lower end of the central shaft 22a of the final reduction gear 22 is engaged with the upper surface of the bracket 3. Since then, the bracket 3 rotates around the fixed shaft 1 in the direction perpendicular to the plane of the paper, and as a result, the bracket 3 The mirror housing 4 also tilts together with the bracket 3, and eventually the mirror housing 4 stops at the storage position (position D in FIG. 9).

[0035] When the bracket 3 rotates, the steel ball 7 separates from the hole 1b, and this steel ball 7 a and engages with another hole 1b at the storage position of the mirror housing 4.

[0036] When the mirror housing 4 rotates from the use position C to the storage position D, the final deceleration As the gear 22 revolves, the center shaft 22a moves in the direction of the revolution of the gear 22. central axis 2 2a is engaged with the hole 31c formed in the flange 31b of the first member 31, so the 1 member 31 also rotates around the fixed shaft 1 together with the bracket 3. At this time, the second member 32 is fixed to the fixed shaft 1, the first member 31 also rotates with respect to the second member 32. It will move. The engaging portion 46a of the movable terminal 46 is moved from position A to F in FIG. direction and enters the second groove 48b. This second groove 48b is located inward compared to position A. That is, it is deviated toward the fixed shaft 1 side, and the engaging portion 46a is deviated in the direction B in FIG. 1, making it movable. The terminal 46 contacts both of the two fixed terminals 38 and 39 as shown in FIGS. 1 and 6.

[0037] When the mirror housing 4 reaches the storage position D, the engaging portion 46a is inserted into the third groove 48c. It is located at B in Figure 3. Since this position B is close to the fixed shaft 1, the engaging portion 46a is also located here. The movable terminal 46 is deviated in the direction of B in FIG. It is separated from the child 39 and contacts only the fixed terminal 38.

[0038] Next, with the mirror housing 4 in the retracted position D, turn on the switch inside the vehicle again. When pressed, the movable terminal 46 and the fixed terminal 38 are in contact with each other, so the voltage is applied in the Q direction in Fig. 6. The flow flows. As a result, the motor M rotates in the opposite direction, and the final reduction gear 22 rotates in the opposite direction to that described above. The mirror housing 4 moves from the storage position D to the usage position C. tilt to At the same time, the steel ball 7 separates from the hole 1b, and the engaging portion 46a of the movable terminal 46 enters the second groove 48b from the third groove 48c. At this time, the engaging portion 46a is connected to the fixed terminal. It comes into contact with both 38 and 39.

[0039] When the mirror housing 4 reaches the use position C, the engaging portion 46a is at the position A in FIG. As mentioned above, the engaging portion 46a is in the state shown in FIG. 7, and the fixed terminal 39 is closed. contact with the body.

[0040] In addition, in the use position of the mirror housing 4, the mirror housing 4 is When an external force is applied in this direction, the steel ball 12 comes off from the hole 9a, and the mirror housing 4 moves forward. The engaging portion 46a enters the first groove 48a at this time. forward At the tilting position E, the fixed terminal 39 and the movable terminal 46 are in contact with each other, and in this state, the switch inside the vehicle is When the switch is pressed, a current flows in the direction P in Fig. 6, and the mirror housing 4 is moved to the use position C. tilt in the direction.

[0041] In this embodiment, when the mirror housing 4 is tilted, the cam groove 48 is The engaging portion 46a of the movable terminal 46 is deflected through the movable terminal 46, thereby the engaging portion 46a is Since the two fixed terminals 38 and 39 are in contact with and separated from each other, this movable terminal 46, the position of the mirror housing 4 with one switch consisting of fixed terminals 38, 39 can be controlled.

[0042] Therefore, there is no need to provide two switches inside the mirror housing as in the conventional case. This reduces the number of parts in the tilt control section, facilitates assembly, simplifies structure, and reduces size. can be done.

[Effect of the idea]

As described above, according to the present invention, when the mirror housing is tilted, the mirror housing is tilted through the cam groove. The movable terminal is deflected, comes into contact with the two fixed terminals, and separates, changing the position of the mirror housing. is controlled. Therefore, with one switch consisting of a movable terminal and a fixed terminal, the mirror housing can be The position of the mirror housing can be controlled by controlling the position of the mirror housing. Eliminates the need for a switch, reduces the number of parts in the tilt control section, and simplifies assembly. , the structure can be simplified and miniaturized.

[Submission date] December 27, 1991

[Procedural amendment 1]

[Name of document to be amended] Specification

[Correction target item name] 0004

[Correction method] Change

[Correction details]

[0004]This tilt control unit has a total of two switches each having two terminals provided on a substrate fixed to the mirror housing side, and a plate member fixed to the fixed shaft side is connected to the two switches. A cam surface is disposed between the two switches and provided around the plate member with a cam surface that can freely come into contact with the two switches. For example, if you press a switch inside the vehicle with the mirror housing in the use position, the mirror housing will tilt and the cam surface will also rotate, and the action of this cam surface will separate the terminals of one of the switches and move the mirror housing to the retracted position. (At this time, the terminals of the other switch are in contact.) Also, if you press the switch again from this state, the mirror housing will tilt to the opposite side, the terminals of the other switch will be separated, and the mirror housing will no longer be used. Stop at a position. (At this time, the terminals of one switch are in contact.)

[Procedural amendment 2]

[Name of document to be amended] Specification

[Correction target item name] 0042

[Correction method] Change

[Correction details]

[0042] Therefore, there is no need to provide two switches inside the mirror housing like in the past. This reduces the number of parts in the tilt control section, facilitates assembly, simplifies structure, and reduces size. can be done.

[Effect of the idea]

As described above, according to the present invention, when the mirror housing is tilted, the movable terminal is deflected through the cam groove, comes into contact with and separates from the two fixed terminals, and the position of the mirror housing is controlled. Therefore, the position of the mirror housing can be controlled with one switch consisting of the movable terminal and the fixed terminal, eliminating the need for two switches in the mirror housing as in the past, and reducing the number of parts in the tilt control section. It is possible to achieve reduction in size, ease of assembly, simplification of structure, and miniaturization. Furthermore, even if the tilting angle is set to a large value , only one groove is required, and the grooves do not overlap as in the case where two switches are provided. Furthermore, by simply replacing the second member, the tilting angle suitable for each model can be easily obtained, so the first member can be used in common.

[Brief explanation of drawings]

[Fig. 1] Plan view of the first member

[Fig. 2] A sectional view taken along the line 2-2 in Fig. 1 in a state where the first member and the second member are combined.

[Fig. 3] Plan view of the second member

[Figure 4] Perspective view of diode

[Figure 5] Cross-sectional view taken along line 5-5 in Figure 2

[Figure 6] Circuit diagram for mirror housing tilting

[Fig. 7] Diagram showing the contact state of the movable terminal and fixed terminal in the use position of the mirror housing.

[Figure 8] Diagram showing the state of contact between the movable terminal and the fixed terminal when the mirror housing is in the retracted position.

[Figure 9] Plan view of a car

[Fig. 10] Partially cutaway front view of electrically foldable vehicle mirror

[Explanation of symbols]

1 Fixed axis 4 Mirror housing 24 Tilt control section 31 First member 32 Second member 38 Fixed terminal 39 Fixed terminal 46 Movable terminal 48 Cam groove 50 switch

Claims (1)

[Scope of utility model registration request] 1. A fixed shaft fixed to a vehicle body, a mirror housing rotatably assembled to the fixed shaft, and a mirror housing provided within the mirror housing to tilt the mirror housing to a storage position or a use position. In an electrically foldable vehicle mirror comprising a drive mechanism and a tilting control section that controls tilting of the mirror housing, the tilting control section is fixed to either the fixed shaft or the mirror housing.
a second member fixed to either one of the members, and a switch attached to the first member to stop tilting of the mirror housing at a predetermined position, the switch being attached to the first member. The movable terminal is arranged between two fixed terminals and engages with a cam groove formed in the second member, and the movable terminal is moved between the two fixed terminals as the mirror housing is tilted. Electrically foldable vehicle mirror that can be moved to either side to activate a switch.