JPH041383A - Sliding door mechanism for vehicle - Google Patents

Abstract

PURPOSE:To enable a door to be opened or closed certainly and easily with manual operation even at the time of failure of a mechanism by providing a cam shaft with a forcibly engaging or removing means for releasing the engagement of a sliding member with a spiral shaft according to requirement. CONSTITUTION:In a sliding door mechanism, a spiral shaft 22 and a cam shaft 23 are arranged in parallel with each other in the front and rear directions. After that, the spiral shaft 22 is provided with a sliding member 26 to be connected to a sliding door 3 via a link member 27 and to be interlocked with the cam shaft 33 and to be engaged with or removed from the spiral shaft 22. Then, in a state that the sliding member 26 is spirally fitted on the spiral shaft 22, the shaft 22 is rotated by a first driving means 24, and the sliding door 3 is opened or closed via the sliding member 26. Besides, the cam shaft 23 is provided with a forcibly engaging or removing means 70 for releasing the engagement of the sliding member 26 with the spiral shaft 22, and according to requirement, the sliding door 3 is opened or closed with manual operation.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a sliding door structure for a vehicle.

(Prior Art) Conventionally, in wagon-type vehicles, a sliding door that can be slid in the longitudinal direction of the vehicle body along a guide rail provided on the side of the vehicle body has been provided as a door on the rear seat side. (For example, JP-A-59-
(See Publication No. 170381).

As a method for driving the opening and closing of such a sliding door, for example, as disclosed in the above-mentioned known example, in addition to the method of transmitting the driving force of the driving means to the sliding door via a cable, there is also a method of driving the sliding door in the longitudinal direction of the vehicle body. A conceivable method is to rotate a helical shaft, which is disposed toward the door, by a driving means, and to slide the sliding door using the screw feeding action of the helical shaft. In addition, in this spiral shaft type sliding structure, it is necessary to include a clutch mechanism that is operated by a clutch drive means such as a motor in order to engage and disengage the spiral shaft and the sliding door as necessary. .

(Problem to be Solved by the Invention) By the way, even in a device equipped with such a power-operated sliding door, depending on the usage situation, it may be necessary to manually open and close the sliding door. It is necessary to release the mechanism to disengage and disengage the slide member and the helical shaft.

However, when the clutch mechanism is connected,
For example, if the clutch drive means becomes difficult to operate due to a disconnection or the like, the clutch mechanism cannot be released and the sliding door cannot be opened or closed manually, which is extremely inconvenient in practical terms. becomes.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to propose a sliding door structure for a vehicle that allows the sliding door to be easily opened and closed manually even when the drive means malfunctions, thereby improving the operability of the sliding door. This was done as a.

(Means for Solving the Problem) In the present invention, as a specific means for solving the problem, an opening formed in a vehicle body is opened and closed by a sliding door that is slidable in the longitudinal direction along the vehicle body. In such a vehicle, a spiral shaft rotated by a first drive means and a camshaft rotated by a second drive means are arranged in parallel in the longitudinal direction of the vehicle body, and a link member is attached to the spiral shaft. disposing a sliding member that is connected to the sliding door via the camshaft and that is threadedly engaged with or disengaged from the spiral shaft in conjunction with the rotation of the camshaft;
When the slide member is screwed onto the helical shaft, it is rotated by the first driving means so that the slide door can be slid in the rear direction of the vehicle body via the slide member, and the camshaft is rotated by the first driving means. The forcible engagement/disengagement means is configured to forcibly rotate the camshaft without using the second drive means to at least disengage the slide member and the helical shaft as necessary. It is characterized by the fact that it has been established.

(Function) Since the present invention has such a configuration, for example, when the second drive means malfunctions due to a disconnection or the like in the state where the slide member and the helical shaft are screwed together, The sliding door can be opened and closed manually by releasing the threaded engagement between the helical shaft and the sliding member using the forced engagement/disengagement means.

(Effects of the Invention) Therefore, according to the vehicle sliding door structure of the present invention, the sliding door can be manually operated even when the second drive means for threading engagement or disengagement between the helical shaft and the sliding member is malfunctioning. Since it can be opened and closed easily and reliably, the operability is improved.

(Example) Hereinafter, a sliding door structure for a vehicle according to an example of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows the left side of a vehicle body 1 of a pan-type vehicle equipped with a sliding door structure according to an embodiment of the present invention. An opening 1a for getting in and out of the rear compartment 2 is formed in the side surface of the vehicle body 1. And this opening 1a
is opened and closed by a sliding door 3 that is slidable in the longitudinal direction of the vehicle body.In this case, in order to support the sliding door 3 so as to be slidable in the longitudinal direction of the vehicle body, a side surface of the vehicle body l is provided with a structure as described below. , three guide rails 4, 8, and 13 are provided at appropriate intervals in the vertical direction.

That is, as shown in FIGS. 1 to 3, the step section 2
A channel-shaped lower rail 4 that extends in the longitudinal direction of the vehicle and whose front end is slightly curved toward the inside of the rear passenger compartment 2 is provided on the lower surface of the vehicle. A guide roller 6 rotatably attached to the upper surface of a guide bracket 5 fixedly provided below the front end of the inner panel 3b forming the slide door 3 is engaged with the lower rail 4.

In addition, an outer panel 7 forming the rear side surface of the vehicle body I
A channel-shaped center rail 8 that extends in the longitudinal direction of the vehicle body and whose front end is slightly curved toward the inside of the rear passenger compartment 2 is fixedly installed approximately at the vertical center of a. The center rail 8 is provided with the sliding door 3.
A plurality of rotatably attached guide rollers 10, 10 are engaged with a guide member 9 rotatably supported at the rear end of the inner panel 3b.

Furthermore, a channel-shaped upper rail 13 is fixedly installed along the lower surface of the roof side reinforcement 12, which has a closed cross-section shape and is joined to the side portion of the roof panel 11 of the vehicle body 1 and extends in the longitudinal direction of the vehicle body. There is.

Like the lower rail 4 and center rail 8, this upper rail 13 also has a shape in which its front end is slightly curved toward the inside of the rear passenger compartment 2. A guide roller 15 rotatably attached to the upper surface of a guide arm 14 fixed to the upper edge of the inner panel 3b of the sliding door 3 is engaged with the upper rail 13.

By supporting the sliding door 3 by these three guide rails 4, 8, and 13, the sliding door 3 is positioned on the side of the outer panel 7a forming the rear side of the vehicle body I, as shown in solid lines in FIG. The door slides toward the front of the vehicle body along each guide rail 4, 8.13 from the opened state, and the curved shape of the front end of each guide rail 4, 8.13 at the final stage. The door is closed when it moves toward the inside of the vehicle (rear compartment 2 side) along
It is possible to move between the state shown by the chain line in FIG.

On the other hand, the opening 1 is used to open and close the sliding door 3.
An opening/closing drive device X, which will be described later, is arranged below a. This opening/closing drive device X, as shown in FIG.
It is disposed on the lower surface of a step portion 20 that is joined at one side to a vertical wall portion 19a that vertically connects the floor panel 18 forming the floor surface portion of the vehicle body 1 and the side sill 19.

The opening/closing drive device X includes a pair of front and rear support brackets 2I fixed to the lower surface of the step portion 20. A helical shaft 22 and a camshaft 23 whose both ends are rotatably supported by a helical shaft 21 and a helical shaft drive motor 2 which is fixedly attached to one of the support brackets 21 and rotates the helical shaft 22, Claims: (corresponding to the first drive means in the middle) and the support bracket 2 on the other side.
a camshaft drive motor 2 (corresponding to second drive means in the claims); a camshaft drive motor 2 fixedly attached to the shaft 22.
A slide member 26 is engaged with the helical shaft 23 and moves in the longitudinal direction of the vehicle body along its axial direction as the helical shaft 22 rotates, and one end thereof is connected to the slide member 26 and the other end is connected to the guide bracket 5. It is composed of link members 27 that are pivotally attached to the respective tip ends and interconnect the slide member 26 and the slide door 3 side.

As the slide member 26 moves along the helical shaft 22 as the helical shaft 22 rotates, the slide door 3 connected to the slide member 26 via the link member 27 moves in the longitudinal direction of the vehicle body. It can be slid.

Furthermore, the slide member 26 includes a
A clutch mechanism Y, which will be described later, is provided in order to threadably engage the helical shaft 22 with the helical shaft 22 as required.

The clutch mechanism Y, as shown in FIGS. 4 to 6,
The spiral shaft 2 is located at a lower position of the slide member 26.
2 and the camshaft 23, a clutch member 30, which will be described later, is swingably supported on a support shaft 29 which is disposed in a direction parallel to the clutch member 2 and the camshaft 23. This clutch member 30 is
A convex portion 30a that contacts the outer circumferential surface 23a of the camshaft 22 is provided on the negative side thereof, and the helical shaft 22 is provided on the other side.
The female threaded portions 30b that engage with the two are integrally formed. The clutch member 30 is always connected to the camshaft by a pair of left and right coil springs 31, 31 interposed between the clutch member 30 and the slide member 26, as shown by solid lines in FIG. It is biased so as to keep it in the recess 23a of 23.

Therefore, by rotating the camshaft 23 by a predetermined angle by the camshaft drive motor 25,
The convex portion 30a of the clutch member 30 comes into contact with the outer peripheral surface 23a of the camshaft 23 and is pushed downward, and the clutch member 30 is oscillatedly displaced against the spring force of the coil spring 31 (as indicated by the chain line in FIG. 6). Diagram tS). At this time, with the rocking displacement of the clutch member 30, the female screw portion 30b formed on the other side engages with the helical shaft 22, whereby the helical shaft 22 and the slide member 26 are in a state of screw engagement. Become. Therefore, in this state, by rotating the helical shaft 22 in either the forward or reverse direction by the helical shaft drive motor 24, the slide member 26 reciprocates in the axial direction along the helical shaft 22, thereby opening the sliding door. 3 will be slid between the closed door state and the closed door state.

Furthermore, in actual use, there are cases where it is desired not only to power slide the sliding door 3 using the helical shaft drive motor 24 as described above, but also to slide it manually.

In such a case, the camshaft drive motor 25 may be operated independently to disengage the clutch mechanism Y.

However, in the state where the clutch mechanism Y is engaged, if the camshaft drive motor 25 becomes inoperable due to a wire breakage or a failure of the camshaft drive motor 25 itself, for example, the sliding door 3 cannot be opened manually. Even if you want to open and close it, you will not be able to do this.
This is extremely inconvenient in practice.

Therefore, in order to be able to reliably and easily manually open and close the sliding door 3 even in such a case, the present invention is applied in this embodiment, and as shown in FIGS. 1 and 7. As shown above, the camshaft 2
A forced engagement/disengagement means 70, which will be described later, is provided between the camshaft drive motor 3 and the camshaft drive motor FIG.

As shown in FIG. 8, the forced engagement/disengagement means 70 connects a camshaft gear 72 attached to the shaft end 23a of the camshaft 23 and the shaft end 25a of the camshaft drive motor 25.
The camshaft gear 7 is housed in a casing 7I that accommodates the motor gear 73 attached to the camshaft gear 73 in a mutually meshing state.
Movable gear member 7 formed with rack gear 75 meshing with 2
4 and an actuating member 80 that is pushed and pulled by a wire 85.

The movable gear member 74 has an engaging protrusion 76 formed on its upper surface, and a guide portion 77 extending parallel to the rack gear forming direction on the side thereof. By fitting the portion 77 into a guide groove 78 formed on the casing 7I side, it can be slid in the front-rear direction (in the direction of arrows a-b).

On the other hand, the actuating member 80 has a first protrusion 81 and a second protrusion 82 that can be engaged with the engaging protrusion 76 of the movable gear member 74, respectively, at both ends in the axial direction. A guide portion 83 is formed. By engaging this guide portion 83 into a guide groove 84 formed in the casing 71, the movable gear member 7
4, it is slidable in the direction of arrow a-b.

When the actuating member 80 is attached to the casing 71, the engaging protrusion 76 of the movable gear member 74 is positioned between the protrusions 81 and 82 of the actuating member 80.

Further, the wire 85 connected to the operating member 80 is
As shown in FIGS. 1 and 7, the operating member 80 is pulled out to a position near the step [20], and the operating member 80 can be slid by pushing or pulling an operating knob 86 attached to the end thereof. It has become. This actuating member 80 is activated by operating the operating knob 86.
The neutral position shown in solid line in FIG.
'') can be selectively set in three positions, front and rear.

Further, the position of the movable gear member 74 is set depending on the sliding position of the actuating member 80.

That is, when the actuating member 80 is set at its neutral position, the movable gear member 74 is at the position shown by the solid line (this position is the position where the clutch mechanism Y is disengaged as described later). (hereinafter referred to as the release position) and the position shown by the chain line (this position is the position where the clutch mechanism Y is engaged as described later, so hereinafter this is referred to as the engagement position). It is possible to move to.

Furthermore, when the actuating member 80 is set at its pulled position, the first protrusion 81 of the actuating member 80 and the movable gear member 74
When the movable gear member 74 is engaged with the engagement protrusion 76 of the movable gear member 74, the movable gear member 74 is set at the release position. Further, when the actuating member 80 is set at the pushing position, the second protrusion 82 of the actuating member 80 and the engaging protrusion 76 of the movable gear member 74 engage with each other, and the movable gear member 74 is moved to the engaged position. The location is set to .

Next, the operating state of the forced engagement/disengagement means 70 will be explained in relation to the clutch mechanism Y with reference to FIGS. 9 to 11.

First, in the state shown in FIG. 9, the actuating member 8
0 is set at the neutral position, the movable gear member 74
is freely movable between its release position (the state shown by the solid line) and the engaged position (the state shown by the @ line), and the clutch mechanism Y can be engaged and disengaged by the camshaft drive motor 25. be. Therefore, in this state, the camshaft gear 72 is rotated by the camshaft drive motor 25, and the clutch mechanism Y moves between the released position (the state shown by the chain line in FIG. 9) and the engaged position (the state shown by the solid line in FIG. 9). When this is selected, the movable gear member 74 will move between the release position and the engagement position as it is pulled by this.

On the other hand, for example, in a case where the camshaft drive motor 25 becomes inoperable due to a disconnection or the like while the clutch mechanism Y is in the engaged state, and the operator wishes to open and close the sliding door 3 manually. In such a case, the operating member 80 is set at the neutral position as shown by the chain line in Fig. 1θ, and then the operation knob 86 is pulled to force it to the pulled position as shown by the solid line in the same figure. Set. Then, the first protrusion 8■ of the actuating member 80 engages with the engagement protrusion 76 of the movable gear member 74.
The movable gear member 74 is moved from the engagement position shown by the chain line in the figure to the disengagement position shown by the solid line in the figure, and rotates the cam shaft 23 via the camshaft gear 72 and the motor gear 73. The clutch mechanism Y is brought into a disengaged state (the state shown by the solid line in FIG. 1O).

Therefore, in this state, the spiral shaft 22 and the slide member 26 are disconnected, and the operator can freely open and close the slide door 3 manually.

Further, for example, there may be cases where it is desired to maintain the position of the sliding door 3 in a half-open state by using a power slide. In such a case, as shown in FIG.
6 to set the actuating member 80 to the pressed position. That is, when the actuating member 80 is set at the pushing position, the movable gear member 74 is set at the engaging position, and the engaging protrusion 76 of the movable gear member 74 engages with the second protrusion 8 of the actuating member 80.
2 and its movement is restricted. Therefore, the clutch mechanism Y is maintained in the engaged state, and the sliding door 3 is maintained in its half-open position unless the operator operates the spiral shaft drive motor 24 (i.e.,
The forced engagement/disengagement means 70 functions as a check mechanism for the sliding door 3.

Incidentally, if it is desired to use the forced engagement/disengagement means 70 as a check mechanism for the sliding door 3, the operating knob 86 should be moved near the step portion 20 as shown by the chain line (reference numeral 86'') in FIG. Opening 1 that is easier to operate than its location
It would be better to provide it at the middle position in the vertical direction of a.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a main part of a vehicle equipped with a sliding door structure according to an embodiment of the present invention, FIG. 2 is an enlarged cross-sectional view taken along ■-D in FIG. 1, and FIG. An enlarged sectional view, FIG. 4 is an enlarged plan view of the slide member shown in FIG. 3, and FIG.
The figure is a sectional view taken from v to ■ in FIG. 4, FIG. 6 is a sectional view taken along ■ - ■ in FIG. 4, FIG. ■-■ Longitudinal cross-sectional view of Figure 7, Figure 9~
FIG. 11 is an explanatory diagram of the operating state of the forced engagement/disengagement means shown in FIG. 8. ■...Vehicle body 2...Rear compartment 3...Slide door 4.8.13...Guide rail 18...Cabin floor 22...Spiral shaft 23...Camshaft 24... Spiral shaft drive motor 25...Camshaft drive motor 26...Slide member Fig. 8 25a \ temporary\\ 23a 72 /, 7' Fig. 9 father /

Claims (1)

[Claims] 1. In a vehicle in which an opening formed in a vehicle body can be opened and closed by a sliding door that is slidable in the longitudinal direction along the vehicle body, a helical shaft rotated by a first drive means and a second drive means A camshaft, which is rotated by disposing a slide member that is threadedly engaged with or disengaged from the shaft;
When the slide member is screwed onto the helical shaft, it is rotated by the first driving means so that the slide door can be slid in the longitudinal direction of the vehicle body via the slide member. The forcible engagement and disengagement means is configured to forcibly rotate the camshaft without using the second drive means as necessary to at least disengage the slide member and the helical shaft. A vehicle sliding door structure characterized by: