JPH0659780B2 - Drive system for vehicle roof - Google Patents

Description

TECHNICAL FIELD The present invention relates to a drive device for a vehicle sunroof.

[Prior Art] Conventionally, in a sunroof of an automobile or the like, a drive device of an opening / closing body for opening / closing the sunroof, a drive motor, a first transmission system for transmitting rotational power of the drive motor to a drive cable of the opening / closing body, and an opening / closing The second for transmitting power to a rotating body having a control surface for turning on / off a detection switch for detecting the opening / closing position of the body
It consists of a transmission system.

The rotary body driven by the second transmission system is provided on a drive axis driven by a drive motor as disclosed in Japanese Patent Application Laid-Open No. 58-214414, and a plurality of rotary bodies are provided close to the control surface of the rotary body. It has a structure in which the detection switch of is arranged.

[Problems to be solved by the invention]

As described above, the rotary member is turned on and off by the rotary member and the control surface of the rotary member from the position provided on the drive axis, and each detection switch has a structure protruding above the case, that is, the height to the rotary member, that is, the device. There is a risk that the overall thickness will increase. In particular, it is desirable that the drive unit be as thin as possible because it is located in the storage space for the outer panel and the inner panel of the roof, but as described above, if the overall thickness of the device increases, the storage space will increase accordingly. This has to be secured, which causes a problem that the ceiling in the vehicle compartment becomes low.

To this end, for example, a transmission gear for extracting power is separately provided in the first transmission gear system for transmitting to the drive cable of the opening / closing body,
A means for extracting power by engaging the transmission gear at the head of the second transmission gear system with the transmission gear is conceivable. With this, the thickness on the drive axis can be reduced, but since the transmission gear for extraction is provided below the first transmission gear system, the thickness of the transmission gear region increases. Since the area of this transmission gear crosses the drain gutter in the vehicle width direction and is restricted by the thickness, it is not desirable to install a transmission gear separately because of the structure. Invite problems that affect you.

On the other hand, a plurality of detection switches whose switch terminals contact the control surface of the rotating body are arranged along the periphery of the rotating body such as for sliding and tilting. In this case, each detection switch needs to be positioned at a position that correctly detects the open / closed position of the opening / closing body, so each detection switch is attached while aligning it one by one at the set location, so use the nerve to attach, In terms of assembling, it was not desirable, and there was a side where an assembling error was likely to occur.

Therefore, an object of the present invention is to provide a vehicle sunroof drive device that can be made thinner and can improve the detection accuracy and assembly of the detection switch.

[Means for Solving the Problem] In order to achieve the above object, according to the present invention, a main shaft supported at both ends by a case main body, and a rotatable drive gear driven by power from a drive motor are provided. , A first transmission gear system that transmits power to the drive unit of the opening / closing body, and a second transmission gear that transmits power to the rotating body that has a control surface for turning on / off a detection switch for detecting the opening / closing body position The leading gear of the system is meshed with the drive gear. As a preferred embodiment, a plurality of detection switches are provided in the vicinity of the control surface of the rotating body, and switch detection switch bodies are mounted on the case body in multiple stages stacked on the same axis.

[Operation] In such a sunroof drive device, the power from the drive motor is input to the drive gear, and one of the power is transmitted from the drive gear to the drive unit of the opening / closing body via the first transmission gear system. On the other side, power is transmitted to the rotating body via the second transmission gear system. In this case, since the first and second transmission gears are branched from the drive gear, it is possible to reduce the thickness of the entire device.

In addition, the detection switch is turned on / off by the control surface of the rotating body.
It is turned off and the open / close position of the open / close member is detected. At the time of this detection, the switch body of the detection switch has an integrated structure that is stacked in multiple stages on the same axis, so misalignment is difficult to place and highly accurate detection can be performed, and positioning at the time of mounting can be done only once. The workability is improved.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings of FIGS. 1 to 17.

In FIG. 2, reference numeral 1 denotes an opening / closing body such as a lid provided in the roof opening 3. The opening / closing body 1 is interlocked with a drive motor 7 through a pair of drive wires 5 and 5 having a gear portion formed therein. is doing.

The drive motor 7 can be rotated normally and reversely by a hand switch (not shown), is arranged inside the roof 9, and the motor axis X is arranged along the vehicle width direction. The first and second transmission gear systems 11 will be described later. It is fixed by a bolt 16 to a flange 15 of a case body 13 containing 12 therein.

A worm 17 is provided on the output shaft of the drive motor 7, and a driving gear 19 serving as a worm wheel meshes with the worm 17 at a right angle to the axis X.

The main drive gear 19 is loosely fitted to the main shaft 21, and the main shaft 21 is supported by the case body 13 via the bearing member 23 so as to be slidable in the axial center W direction at both ends and both shaft ends are exposed to the outside.

The drive gear 25, which is the driven side and faces the main drive gear 19, is integrally fixed to the main shaft 21. The friction gear 27 controls the fastening force of the drive gear 19 and the drive gear 25. When a load acts on the drive gear 25 side, slippage occurs due to the friction clutch 27, and a load exceeding the allowable range acts on the drive motor 7. It's supposed to go away.

That is, the washer 29 is interposed between the main drive gear 19 and the drive gear 25, and the washer 29 is fixed to the main drive gear 19 side. is doing. Further, a washer 30 is provided between the driving gear 19 and the flange portion 31 of the main shaft 21.
The ring-shaped clutch member 33 and the clutch spring 3
5 are provided.

The drive gear 25 is meshed with the first gear 37 at the head of the first transmission gear system 11. The first gear 37 is
A second gear 43 that is loosely fitted to a first gear shaft 39 supported at both ends by the case body 13 and fixed to a second gear shaft 41.
The meshed state is ensured that does not affect the shape of the drain gutter 9a.

The second gear shaft 41 is mounted on the case body 13 via the bearing member 45.
Both ends are rotatably supported by the case main body 1
It projects from 3 to the outside. A third gear 47 that meshes with the gear portion of the drive wires 5, 5 is fixed to the protruding shaft end portion of the second gear shaft 41, and the drive wires 5, 5 are moved by forward or reverse rotation of the third gear 47. It is possible to perform tilt control in which the rear end side of the opening / closing body 1 is raised by the movement of the moving wires 5 and 5 and slide control in the vehicle front-back direction.

On the other hand, a sub gear 49 is integrally provided under the drive gear 25 mounted on the main shaft 21, and the first gear 51 at the head of the second transmission gear system 12 meshes with the sub gear 49,
The first gear 51 is fixed to a first gear shaft 53 having a gear portion 57 supported at both ends by the case body 13, and a rotating body drive gear 55 is meshed with the gear portion 57. The rotating body drive gear 55 is mounted on a rotating shaft 61 of a rotating body 59 whose both ends are supported by the case body 13.

On the peripheral surface of the rotating body 59, the first, second and third control surfaces 63,
65 and 67 are provided respectively. First, second, and third detection switches LS-1 and LS-2 having switch terminals S ₁ , S ₂ , and S ₃ which are in contact with the first, second and third control surfaces 63, 65 and 67. The switch main body 69 of the LS-3 is stacked in three stages, and the bolt 73 penetrates through the through hole 71 provided in the switch main body 69 via the bracket 70, and the screw portion 73a of the bolt 73 is screwed into the case main body 13. is doing. Further, the mounting hole 70 a of the bracket 70 is fitted to the rotating shaft 61 of the rotating body 59. As a result, the detection switches LS-1, LS-2, LS-3 are attached to the rotating body 5
The control surfaces 63, 65, 67 of 9 are positioned at the same time.

On the other hand, the first detection switch LS-1 controlled by the first control surface 63 has a normally closed contact NC for sliding control of the opening / closing body 1, and the switch terminal S ₁ is in contact with the first control surface 63. By doing so, it is turned on and the normally closed contact NC is switched to the open state. This open state is ensured in the area of the control surface 63, and as shown in FIG. 13, a margin area α is provided to keep the ON state even after the full opening is completed.

The second detection switch LS-2 controlled by the second control surface 65 is for tilt control of the opening / closing body 1 and has a normally closed contact NC, and the switch terminal S ₂ has the second control surface 6
Turns on by contacting 5 and normally closed contact N
C switches to the open state. This open state is ensured in the area of the control surface 65, and as shown in FIG. 13, a margin area β is provided to keep the ON state even after the full opening is completed.

The third detection switch LS-3 controlled by the third control surface 67 has a normally closed contact NC, and is brought into an open state when the switch terminal S ₃ contacts the third control surface 67. The control surface 67 is formed in a protrusion shape, and the closing contact N is 150 mm before the roof opening 3 is fully closed.
It is for 150 mm slide control that switches C to the open / closed state.

FIG. 7 shows the first, second and third detection switches LS-.
The control circuit of the drive motor 7 which has 1, LS-2, LS-3 is shown.

In the figure, TL-1 and TL-2 are a tilt-up switch and a tilt-dow switch that are manually operated,
SR-1 and SR-2 respectively show a slide open switch and a slide close switch which are manually operated. Tilt up switch TL-1
Has an open contact NO in which the switch terminal TC ₁ is in an open state and a normally closed contact NC in an open state at the time of neutral, and the switch terminal TC ₁ is connected to a power supply circuit BL continuing to the battery power supply B. The normally closed contact NC is connected in series with the switch terminal S _{2 of the} second detection switch LS-2 via the first relay coil R1 forming the relay circuit, while the open contact NO is connected to the first detection switch LS-. The switch terminal S _{1 of No. 1} is connected to the normally closed contact NC which is closed.

The normally closed contact NC in which the switch terminal S _{2 of} the second detection switch LS-2 is closed is connected to the open contact NO in which the switch terminal TC ₂ of the tilt-down switch TL-2 is open, and the switch terminal TC ₂ Is grounded. Further, the switch terminal S ₂ of the second detection switch LS-2 is connected to the open contact NO where the slide open switch terminal SC ₂ is in the open state.

The first relay coil R ₁ is connected to the relay terminal r ₁ connected to the first motor terminal 7a side of the drive motor 7, and the relay terminal r1 is excited from the ground contact a ₁ by exciting the first relay coil R _1. The contact is switched to the closing contact a ₂ .

The slide close switch SR-1 has an open contact NO in which the switch terminal SC ₁ is in the open state at the time of neutral.
And a normally closed contact NC which is opened, the switch terminal SC ₁ is connected to the power supply circuit BL, and a self-holding circuit G described later is provided on the normally closed contact NC side.
H is connected. The open contact NO is connected to the open contact NO of the first detection switch LS-1.

The switch terminal S ₁ of the first detection switch LS-1 is a normally closed contact NC in which the switch terminal S _{3 of the} third detection switch LS- ₃ is opened via the second relay coil R ₂ forming a relay circuit. It is connected in series. Third
Switch terminal S ₃ of the detection switch LS-3 is connected to the slide Oven switch S-2 of the normally closed contact NC of switch terminals SC ₂ is closed, open switch terminal SC ₂ is grounded.

The second relay coil R ₂ is connected to the relay terminal r ₂ connected to the second motor terminal 7b side of the drive motor 7, and the second relay coil R ₂ is excited to cause the relay terminal r _{2 to} have a ground contact a ₁ As a result, the contact is switched to the open contact a ₂ . In addition,
When the relay terminals r ₁ and r ₂ are opened, the vehicle body is grounded and the drive motor 7 stops braking.

On the other hand, the second detection switch L is connected in series to the third relay coil R ₃ of the self-holding circuit GH connected to the normally closed contact NC side of the slide close switch SL-1.
The open contact NO of S-2 is connected. Therefore, by exciting the third relay coil R3, the power supply circuit BL
Followed by the relay terminal r3-1 and the third detection switch LS-
Relay terminal r3 provided in parallel with the switch circuit of No. 3
2 is switched to the closed state at the same time, and even if the switch terminal SC _{1 of the} slide close switch SR-1 is switched to the open contact NO, the excited state is maintained via the relay terminals r3-1 and r3-2. 3 detection switch LS-3
The switch circuit has been secured.

The self-holding circuit GH is a slide open switch S
Switch terminal SC ₂ of R-2 is adapted to be cut off the current flowing through the third relay coil R3 by switched to an open terminal NO side self-holding is released.

Next, the operation will be described. First, in order to tilt up the opening / closing body 1 in the fully closed state, as shown in FIG. 8, first, the tilt-up switch TL-1 is opened with the open contact NO.
Operate to the side. As a result, the second relay coil R2 is excited, and a current flows from the second motor terminal 7b to the first motor terminal 7a in the drive motor 7 to reverse the rotation. At the same time, the rotation of the first control surface 63 causes the normally closed contact NC of the switch terminal S1 of the first detection switch LS-1 to be in the open state, and the second relay coil R2 to be in the non-excited state. For this reason,
Relay contact r2 is motor 7 returns to open the contacts a ₂ stops braking. As a result, the tilt-up state of the opening / closing body 1 can be obtained.

Next, in order to fully close the opening / closing body 1 in the tilt-up state, the tilt-down switch TL-1 as shown in FIG.
By closing the open contact of the first relay coil R1
Is excited and a current flows from the first motor terminal 7a to the second motor terminal 7b in the drive motor 7, and the drive motor 7 rotates in the normal direction. At the same time, the opening / closing body 1 is lowered and the switch terminal S ₂ of the second detection switch LS- ₂ is switched to the open contact NO by the rotation of the second control surface 65. Thereby, the first relay coil R1
Is released and the drive motor 7 is braked. As a result, the opening / closing body 1 can obtain the fully closed state of the roof opening 3, and the tilt control of the opening / closing body 1 can be performed by operating the switches TL-1 and TL-2.

Next, in order to fully open from the fully closed state, the slide open switch SR-2 is switched to the open contact NO side as shown in FIG. At this time, the second detection switch LS-
Since the second switch terminal S ₂ is switched to the open contact NO side by the second control surface 65, the first relay coil R1 is in the excited state and the drive motor 7 has the first
A current flows from the motor terminal 7a to the second motor terminal 7b to perform normal rotation. At the same time, the opening / closing body 1 slides backward,
Further, when the second control surface 65 rotates beyond the margin area β, the switch terminal S ₂ of the second detection switch LS-2 returns to the normally closed contact NC side. As a result, the first relay coil R1 is deenergized and the drive motor 7 is braked. As a result, the opening / closing body 1 is contracted into the roof 9 and the fully opened state of the roof opening 3 is obtained.

Next, in order to fully close the switch, the slide close switch SR-1 is switched to the open contact NO side as shown in FIG. As a result, the second relay coil R2 is excited, and a current flows from the second motor terminal 7b to the first motor terminal 7a in the drive motor 7 to reverse the rotation. At the same time, the opening / closing body 1 slides forward, but when approaching the fully closed position, the third control surface 67 causes the switch terminal S of the third detection switch LS-3.
₃ is controlled by switching and the normally closed contact NC is opened. As a result, the excitation of the second relay coil R2 is released, and the drive motor 7 is braked. As a result, the opening / closing body 1 temporarily stops about 150 mm before fully closing. At this time,
The drive motor 7 is maintained in the stopped state even if the slide close switch SR-1 is continuously operated.

Next, the switch terminal SC ₁ that releases the operation of the slide close switch SR-1 returns to the close contact NC side and a current flows through the self-holding circuit GH to excite the third relay coil R3. As a result, the two relay contacts r
3-1 and r3-2 are closed to secure the self-holding circuit GH. Therefore, subsequently, as shown in FIG. 16, when the slide close switch SR-1 is operated again to the open contact NO side, the second relay coil R2 is excited via the circuit passing through the relay contact r3-2 and the drive motor 7 is driven. The current flows from the second motor terminal 7b to the first motor terminal 7a to be reversed. Then, when the opening / closing body 1 comes to the fully closed position, the first detection switch LS− that has been pressed by the first control surface 63.
The switch terminal S ₁ of _{No. 1} returns to the normally closed contact NC side. Further, since the switch terminal S ₃ of the third detection switch LS-3 returns to the normally closed contact NC, the self-holding is released and the drive motor 7 is braked. As a result, the opening / closing body 1 stops at the fully closed position, and the fully closed state of the roof opening 3 is obtained.

Thereafter, the opening / closing body 1 can be fully closed / opened by operating the slide close switch SR-1 and the slide open switch S-2. During operation of the opening / closing body 1, the detection switches LS-1, LS-2, and LS-3 have an integrated structure in which the control switches 63, 65, and 67 of the rotator 59 are stacked in multiple stages. There is no risk of misalignment, and position detection is performed reliably. Also,
Rotating body 59 and each detection switch LS-1, LS-2, L
The S-3 does not largely project upward, and the thickness of the entire device can be suppressed to be small.

[Effects of the Invention] As described above, according to the drive device for a sunroof of the present invention, the rotating body that controls the detection switch is driven by the second transmission gear system that is branched from the drive gear. Since the influence is eliminated and the thickness of the entire device can be reduced, the device can be mounted without expanding the storage space. Further, since the respective detection switches are mounted on the case body in a state of being stacked in multiple stages, a high detection accuracy can be obtained, and further, since the positioning at the time of mounting can be done only once, the workability can be improved.

[Brief description of drawings]

FIG. 1 is a plan view of the entire drive motor, FIG. 2 is a plan view of the state in which the drive device is attached to the roof portion, and FIG. 3 is II of FIG.
I-III line sectional view, FIG. 4 is a 1V-IV line sectional view of FIG. 1, FIG. 5 is an exploded perspective view of the first and second transmission gear systems, and FIG. FIG. 7 is a control circuit diagram of the drive motor, FIG. 8 is a control circuit diagram at the time of tilting up, and FIG. 9 is an explanatory diagram showing the movement of each control surface of the rotating body. FIG. 10 is a control circuit diagram from tilt-up to fully closed, FIG. 11 is an explanatory diagram showing the movement of each control surface of the rotating body of the same, FIG. 12 is a control circuit diagram showing the slide fully open state, FIG. FIG. 13 is an explanatory view showing the movement of each control surface of the above rotating body, FIG. 14 is a control circuit diagram showing a 150 mm stopped state from fully open to fully closed, and FIG. 15 is each control of the above rotating body. FIG. 16 is an explanatory view showing the movement of the surface, FIG. 16 is a control circuit diagram showing a 150 mm stopped state to a fully closed state, and FIG. 17 is a control surface of the rotating body of the same. Is an explanatory view showing the can. Description of main drawing symbols 1 ... Opening / closing body 7 ... Drive motor 11 ... First transmission gear system 12 ... Second transmission gear system 13 ... Case body 21 ... Main shaft 25 ... Drive gear 47 ... Third gear (drive unit) 59 ... rotating body 63, 65, 67 ... control surface LS-1 · LS-2 · LS-3 ... detection switches _{S 1 · S 2 · S 3} ... switch terminal

Claims (2)

[Claims] 1. A main shaft supported at both ends by a case body is provided with a rotatable drive gear that is driven by power from a drive motor, and at the top of a first transmission gear system that transmits power to a drive portion of an opening / closing body. A gear and a leading gear of a second transmission gear system for transmitting power to a rotating body having a control surface for turning on / off a detection switch for detecting the opening / closing body position are provided, and both gears are meshed with the drive gear. A drive device for a vehicle sunroof characterized by the above. 2. The detection switch for detecting the position of the opening / closing body is composed of a plurality of switches, and the switch bodies are stacked on the same axis in multiple stages and attached to the case body. The drive device for a vehicle sunroof according to item 1.