JPS59167344A - Lamp irradiation angle adjuster - Google Patents

Abstract

PURPOSE:To reduce electronic circuit elements thus to eliminate protective countermeasure for electric elements by performing forward rotation, stopping and reversing rotation of actuator selectively by means of combination of plural segment type switch of lamp inclination angle adjusting mechanism and manual operation chip. CONSTITUTION:Upon rotation of chip 41 by one step to the right, selector 43 for inclination angle indicating switch 40 will contact with contactor 42n while 44 with 442-443. Here a feedback switch 9 is grounded because the selector 9a is contacting with a contactor N to rotate a motor 10 forwardly with positive voltage to a resistor R1. At the same time, the selector 9a will also rotate rightward to contact with a contactor 21 and continue rotation because the selector 44 is separated from the contactor 441, and when the selector 9a is separated from the contactor N, the motor 10 will stop. Reverse rotation of motor is performed similarly. In such a manner, inclination of lamp can be set to desired angle without employing electric element such as IC.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an angle adjustment device for setting the irradiation angle of a lamp, and more particularly to an angle adjustment device for an on-vehicle headlamp.

For example, in a car, the front or rear of the car body rises or falls depending on the position and amount of the load being carried, and the illumination angle of the headlights relative to the road surface in front of the car changes. The higher the irradiation, the more dangerous it is because it dazzles the driver of an oncoming vehicle.

Therefore, we developed an automatic lamp inclination angle adjustment device that automatically adjusts the lamp inclination angle according to the inclination angle of the vehicle body, and a wire stretched between the driver's seat and the lamp to manually adjust the lamp inclination angle via the wire. Conventionally, manual lamp inclination angle adjustment devices and the like have been proposed.

However, the automatic adjustment system is equipped with a sensor for detecting the inclination angle of the vehicle body and is also equipped with an advanced calculation control system, resulting in high cost. It is also necessary to take sufficient measures to protect electrical circuit elements.

In addition, with manual adjustment, it is difficult to route the wires, and wires are likely to break due to improper placement. Many mechanical elements are required to transmit the wire driving force. Also, sometimes only coarse adjustments can be made.

~31 The present invention has a simple structure that is intermediate between fully automatic adjustment and manual adjustment, and in particular does not substantially require electric circuit elements such as transistors and TCs, and can tilt the lamp with a light operation of a single operator. It is an object of the present invention to provide a lamp irradiation angle adjusting device whose angle can be adjusted.

In order to achieve the above object, the present invention combines a multi-segment type switch device with an adjustment mechanism for adjusting the inclination angle of the lamp, and also includes a multi-segment type switch device equipped with a manually operated knob. In preparation, these 2
By combining the positions of the selectors of the two switch devices, the actuator is configured to selectively energize, stop, reverse energize, etc.

According to this, the number of components of the adjustment device, especially electric circuit elements such as I transistors and ICs, is reduced, and the structure becomes extremely simple, and moreover, it can be easily operated by hand.

Protective measures for electrical circuit elements are virtually unnecessary.

FIG. 1 shows the structure of an embodiment of the present invention on the lamp side.

The lamp 1 is located on the right side of the front of the vehicle, facing forward, and is located in the right headlight. The substrate of the lamp 1 is supported at the bottom by joint 2 and at the 4--L side by joints 1-3.

A screw stud 4 is fixed to the ball bearing of the joint 1-3, and a female screw 5 with an arm is screwed into the screw stud 4. One end of a link 6 is connected to the arm of the female screw 5, and the other end of the link 6 is connected to one end of an arm 7. The other end of the arm 7 is fixed to the output shaft of the reduction gear unit 1-8. Further, a rotating shaft of a feedback switch device 9 is fixedly mounted on this output shaft. A rotating shaft of an electric motor 10 is coupled to an input shaft of the reduction gear unit 8 .

Feedback switch device (first switch device) 9
The motor 10 is connected to an inclination angle indicating switch device (second switch device) 40 having a manual operation successor.

In the above configuration, joints 2, 3 . Threaded rod4. Female thread5. Link 6 and arm 6 are the lamp support mechanism, and motor 10 is the actuator. For example, when the motor 10 rotates forward, the arm 7 and the link 6 rotate,
The female screw 5 and the threaded rod 4 move to the left, and the inclination angle (angle with respect to the horizontal plane) of the lamp 1 becomes smaller. Motor 1
0 is reversed, the female screw 5 and the screw rod 4 move to the right, and the angle of inclination of the ramp 1 increases.

By applying a screwdriver to the right end of the screw head 4 and turning the screw head 4, the screw head 4 moves to the left or right with respect to the female screw 5, and the inclination angle of the lamp 1 changes. This adjustment is performed when the lamp 1 is inspected or repaired.

Regarding the headlights, there is a left light outside of the above-mentioned right lie 1, and the left light also has a similar lamp support mechanism.
It is equipped with a gear unit 1-, a feedback switch device and an electric motor (18-20).

FIG. 2 shows the connection relationship between the above-mentioned equipment of the left and right lights and the tilt angle indicating switch device 40 provided with a manually operated knob. The inclination angle indicating mechanism and switch device 40 has a heir 41 for manual operation fixed to its rotating shaft. The switch device 40 is installed around the driver's seat in the car, and is a switch device 40 for manual operation.
1 is placed in an exposed manner inside the vehicle. A power supply voltage line and a ground line are connected to the tilt angle indicating switch device 40,
These lines and the first set of five contacts 42n, 421~
Seven wires, including the five selection connection wires connected to 424, are connected to the feedback switch device 9 and motor 10 of the right light via connectors 51 and 52.

Each of the second set of five contacts 44n, 441 to 444 is also commonly connected to the five selection connection lines.

The first selector 43 includes a first set of five contacts 42n,
The shape is such that only four of the selectors 421 to 424 can be contacted at the same time, and similarly, the second selector 44 is also connected to the second set of five.
The shape is such that it can contact only four of the contacts 44n, 441 to 444 at the same time.

Similarly, for the left light, the first set of five contacts 45n,
451-454. 2nd set of 5 contacts 47n, 471
~474 and first and second selectors 46°47
It has. The first and second selectors 43, 44 for the right light and the first and second selectors 46, 47 for the left light are fixed to the same rotation shaft, and a manually operated knob 41 is attached to the same rotation shaft. It is fixed. The first selectors 43 and 46 are commonly connected to the ground line, and the second selectors 44 and 47 are connected to the power supply voltage line (+1
2V). However, when the first selector 43.46 and the second selector 44.47 are explained by focusing on the first selector 43 and the second selector 44, for example, when the legitimate child 41 indicates N, The first selector 43 is located in front of the contact 42n in the clockwise direction and does not contact it, nor does it contact any of the other contacts 421 to 424, and the second selector 44 is located in front of the contact 42n.
It is shaped and arranged so that it does not come into contact with the other contacts 421 to 424 but contacts all the other contacts 421 to 424.

When the legitimate child 41 indicates "3", the first selector 43 contacts the contacts 42n, 421 and 422, and the second selector 44 contacts only the contact 424.

Contacts for left light 45n, 451-45l, 47n,
47t to 474 and first and second selectors 46.47
The combination is also exactly the same as that for the right light. In addition,
In Figure 3, four sets of contacts and four selectors are shown distributed on a flat 8-plane. Drawer contacts are formed on the same printed circuit board concentrically and on the same plane with different radii, and each selector has brushes that contact four contacts and one brush for connecting the drawer. However, the drawer connection brush is always in contact with one of the ring-shaped drawer contacts (printed electrodes). A ground wire (in the case of the first selector) or a +12V power supply voltage line (in the case of the second selector) is connected to this lead-out contact.

With the above configuration, the four selectors are simultaneously rotated in the same direction with respect to each of the four sets of contacts in the relationship shown in FIG. 3 by the operation of one legitimate child 41. Since the forward/reverse rotation of the motor and the tilting of the lamps of the left and right lights in response to the operation of the operation knob 4 are exactly the same and are performed simultaneously, only the irradiation angle adjustment system and adjustment operation of the lamp 1 of the right light will be described below.

The first set of contacts 42n, 421-424 and the second set of contacts 44n, 441-444 are connected in common to each other, and the feedback switch device 9
connected to the contacts.

The feedback switch device 9 includes 2x(5-]) contacts N, ], ~14+ 21-23, and a selector 9a that contacts only one of the contacts. Among these contacts, among the contacts of the tilt angle indicating switch device 40, a contact N corresponding to the contacts 42n, 44n indicating the maximum angle, and contacts 424, 4 indicating the minimum angle.
The contact 14 corresponding to 44 has a contact /12, respectively.
The common connection line of contacts 424, 444 is connected to the common connection line of contacts 424, 44n, and is not commonly connected to other contacts. However, the contacts between these contacts N and 14, which are located at symmetrical positions with respect to the line connecting N-14, are commonly connected and connected to the corresponding contacts of the tilt angle indicating switch device 40. Commonly connected. That is, the contacts 11 and 21 of the feedback switch device 9 are connected in common, and the contact 4 of the tilt angle indicating switch device 40 is connected in common.
21 and 441, and the contacts 1□ and 22 of the feedback switch device 9 are connected in common, and are connected to the contacts 422 and 442 of the tilt angle indicating switch device 40. 13 and 23
is connected in common with the tilt angle indicating switch device 40.
is connected to contacts 423 and 443.

Now, the manual operation knob 41 of the tilt angle indicating switch device 40
is in the N position and the lamp 1 is angled at the indicated position, the selector 9a of the feedback switch device 9 is in contact with the contact N, as shown in FIG. In this state, the tilt angle indicating switch device 40
The first and second selectors 43 and 44 of the contactor 42n
, 44n, the ground potential is applied to the resistor R1 connected to the forward rotation energizing terminal of the motor 10, and +12V is applied to the resistor R2 connected to the reverse rotation energizing terminal of the motor 10. Since the selector connected to the common terminal of the motor 10 is floating, the motor 10 is not energized and is stopped.

Here, when the legitimate child 41 is rotated one step clockwise (11-), the first selector 43 of the inclination angle indicating switch device 40 is set to the contact 42n, and the second selector 44 is set to the contact 42n.
Contact numbers 42-443. In the feedback switch device 9, since the selector 9a is in contact with the contactor N, it is connected to the ground by the first selector 43, and +12v is added to the resistor R1, so the motor 1o is Turn around. This causes the selector 9a of the feedback switch device 9 to rotate clockwise and come into contact with the contactor 21. The contactor 21 is the second selector 44
Since it is separated from the contact 441, it is electrically floating, so while the selector 9a is in contact with both the contacts N and 21, the motor 1o continues to rotate in the normal direction, and the selector 9a rotates clockwise. Continue rotating.

Then, when the selector 9a separates from the contact N, the selector 9a becomes in a floating state, and the energization of the motor 1o is stopped and the motor 1o is stopped. Similarly, every time the heel of the tilt angle indicating switch device 4o is rotated one step clockwise, the motor 1o rotates the selector 9a of the feedback switch device 9a one step 12-step clockwise and then stops. It will be done.

Contrary to the above, for example, the legitimate child 41 of the tilt angle indicating device 40
is in the "3" position, the first selector 43 contacts the contacts 42n, 421, and 42□, and the second selector 44 contacts only the contact 444. When the heir 41 is rotated one step counterclockwise while the selector 9a is in contact with the contact 23, the first selector 43 contacts only the contacts 42n and 421, and the second selector 4
4 contacts contacts 443 and 444. Then, the selector 9a is connected to +12v by the second selector 44, the common terminal of the motor 10 becomes +12v, and the motor 1
- Current flows through resistor R2 to reverse the motor 1o, thereby rotating the selector 9a counterclockwise. When the selector 9a leaves the contact 23, since the contact 22 is electrically floating, the motor 10 is de-energized and the motor 10 stops.

In the above operation, the feedback switch device 9
Contacts 11 to 13 make no sense.

However, if resistor R1 is connected to ground potential and resistor R2 is connected to +
12v, the rotational direction of the motor 10 becomes φ (as described above), and in the feedback switch device 9, only the contacts N and 11 to 14 are significant. In this way, in the feedback switch device 9, two sets of contacts are arranged symmetrically between the contacts corresponding to the maximum angle and the minimum angle, so that the rotation direction of the motor 10 and the rotation direction of the selector 9a are in the same direction. The reason why it can be set in either of the opposite directions is to prevent inoperability or damage caused by incorrect connection during assembly, and to prevent rotation of the tilt angle indicating switch device 40. This is based on the consideration that the relationship between the direction and the increase or decrease of the inclination angle of the lamp 1 can be selected and set.

As long as the settings are the same, the ramp to the left lie 1 performs exactly the same operation as the ramp 1 to the right lie 1, as described above.

As explained below, according to the present invention, remote automatic energization of an actuator is performed without using any electrical elements such as 1 to transistors or ICs, resulting in a significant reduction in the number of device elements, and Elemental protection measures are virtually unnecessary.

Furthermore, the inclination angle of the lamp can be set to a desired angle with a simple operation.

In addition, in the second embodiment, the resistance R1 and R2 are -1
-] 2 V divided in half, +6 V, is applied to the motor 10.
one end of the motor 10, and the other end of the motor 10 has a ground potential or +
12v is applied, and 6v is applied between the terminals of the motor 10, the polarity of which is opposite for forward rotation instructions and reverse rotation instructions. This is because it is easy to obtain +12V as a power source, the voltage division by the resistors R1 and R2 is inexpensive, and an inexpensive small motor can be used. If a three-terminal motor with a forward voltage application terminal, a reverse voltage application terminal and a common terminal (earth) is available, the feedback switch device 9 is correspondingly provided with two separate contact groups. As an example, each set is individually connected to each of the two separate groups of contacts of the tilt angle indicating switch device 40, and one set of contacts 15-1 is connected to the forward rotation voltage application terminal of the motor by one selector. , another silk contact may be connected to the jφ rolling voltage application end of the motor using another selector.

Further, in the above embodiment, the selector is driven rotationally, but the selector may be driven linearly, or the selector may be fixed and the contacts may be driven.

Furthermore, a switch device having the structure of the tilt angle indicating switch device 40 is coupled to the driving mechanical system of the lamp as a feedback switch device, and the switch device having the structure of the feedback switch device 9 is installed in the vehicle interior as the tilt angle indicating switch device. It may be placed in

[Brief explanation of the drawing]

FIG. 1 is a longitudinal cross-sectional view showing a lamp support mechanism according to an embodiment of the present invention, and FIG. 2 is a connection between a tilt angle indicating switch device, a fee 1-pax inch device, and an electric motor in the embodiment. Block diagram showing. FIG. 3 is a wiring diagram showing the configuration of the tilt angle indicating switch device and the feed 16-Pax inch device. 1: Lamp 2, 3: Joint 4: Screw 5: Female thread 6: Link
7: Arm 8: Reduction gear unit 1- 9.19: Feedback switch device (first switch device) 10.20: Electric motor (actuator) 40: Switch device for tilt angle indication (second switch device) Patent applicant Aisin Seiki Co., Ltd. East; Figure 78fmBrj59-167344 (6) East 2 Figure 3 42n 42°42, 42 branches, 44...゜, Il, 53 473+, 20
,. .

Claims (5)

[Claims] (1) A lamp support mechanism that supports the lamp in a tiltable manner and changes the inclination of the lamp by mechanical displacement; An actuator that applies mechanical displacement to the lamp support mechanism; A plurality of contacts and a selector that contacts at least one of the contacts; a first switch device in which contact is switched by moving one of a contactor and a selector relative to the other; and a first set of a plurality of contacts, a second set of a plurality of contacts; A first selector capable of contacting a set of contacts and a second selector capable of contacting a second set of contacts, the contact being switched by one of the contacts and the selector moving relative to the other. two switch devices; one of the first and second switch devices is coupled to an actuator or a lamp support mechanism driven by the actuator, and the other is coupled to a manually operated knob; A lamp irradiation angle adjustment device in which the selector of the switch device is connected to the common terminal and positive and reverse biasing terminals of the actuator. (2) coupling a first switch device to an actuator or a mechanical element driven by it and connecting its selector to a common terminal of the actuator; and coupling a manually operated progeny to a second switch device to The second selector is connected to the positive biasing terminal of the actuator, and the second selector is connected to the reverse biasing terminal of the actuator.
1) The lamp illumination angle adjustment device described in item 1). (3) The left and right sides of the on-vehicle headlamp each include a lamp support mechanism, an actuator, a first switch device, and a second switch device.
2) The lamp irradiation angle adjustment device described in item 2). (4) Claims (2) or (3) above, wherein the lamp support mechanism, actuator, and first switch device are mounted on the lamp side, and the second switch device is mounted inside the vehicle interior.
Lamp irradiation angle adjustment device as described in . (5) When the number of angle setting stages is a, the number of contacts of the first switch device is 2 (a -] ) and the selector is 1
The number of contacts in the first set and the second set of the second switch device is a, respectively, and the first and second selectors simultaneously touch only a-] contacts. Connect the contacts of the first set and the second set of the second switch device in common, and connect two of the eight common lines to one of the first switch devices. The other common lines are respectively commonly connected to two different contacts of the first switch device, the selector of the first switch device is connected to the common line of the actuator, and the other common line is connected in common to two different contacts of the first switch device, and the selector of the first switch device is connected to the common line of the actuator. The lamp according to claim 1, wherein the first selector is connected to the positive biasing terminal of the actuator, and the second selector is connected to the reverse biasing terminal of the actuator. Irradiation angle adjustment device.