JPH054436Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of a tailgate lifter for raising and lowering luggage in a van-type vehicle equipped with double doors at the rear of the luggage compartment.

(Prior Art) The present applicant previously disclosed a device for preventing the gate plate of a tailgate lifter from being erroneously retracted when the double door is not completely closed (Utility Model No. 63).
−165250). As shown in Figs. 7 to 12, when the gate plate of the tailgate lifter is placed in the raised position (position A in Fig. 7), the blocking piece 20
(Fig. 9) and when the tension arm 12 is engaged,
When storing, move the blocking piece 20 to the tension arm 1.
2. In addition, in order to put the vehicle into running condition, the gate plate was retracted after closing the double doors, but the engagement between the anti-slip plate 20 and the tension arm 12 was disengaged before the double doors were completely closed. If the quadrilateral link mechanism is raised and rotated upward, the double door and the gate plate will collide, resulting in damage to both. Therefore, the sliding piece 23 interlocks with the movement of the switching blocking piece 20.
When the blocking piece 20 is provided and the tension arm 12 is engaged, the sliding piece 23 is removed from the cam keeper 7 at the lower end of the locking rod 3, so that the double door can be locked by the cam 2.

This operation of the blocking piece 20 is performed by the spring 29.
(Fig. 9) as it was rotated manually.
In terms of operability, I was not entirely satisfied.

(Problems to be Solved by the Invention) The present invention was devised in view of the above-mentioned problems, and the blocking piece 20 can be automatically operated in response to opening and closing of the door, and the gate plate can be To provide a tailgate lifter capable of preventing an erroneous operation of retracting a gate plate with a double door in an incompletely closed state when selecting an elevating position and a retracting position through a shaped link mechanism.

(Solution by invention) The rod 39 is fixed to both ends of the rod 39 rotatably supported inside the lower cross beam 6b of the van-type vehicle, and is removable from the upper surface of the tension arm 12 constituting the parallelogram link mechanism. a blocking piece 20, and a blocking piece rotating device 36 which is fixed to the lower cross beam 6b and through which the rod 39 passes. When pressed inward, the rod 39 is rotated through a mechanism that converts the linear motion of the pin 38 into rotational motion, and the door 1 is rotated.
Blocking piece 2 fixed to the end of the rod 39 when closed.
0 to limit the rise of the tension arm 12.

A mechanism for converting the linear motion of the pin 38 into rotational motion in the blocking piece rotation device 36 is a rack 47 provided on the pin 38 and a pinion 4 provided on the rod 39.
I made it a combination of 8.

Further, a mechanism for converting the linear movement of the pin 38 in the blocking piece rotation device 36 into rotational movement is performed by the engagement of the flange 51 provided on the pin 38 and the pin 50 at the upper end of the bracket 49 provided on the rod 39. I made it.

Furthermore, the actuating piece for pressing the pin 38 is an actuating piece 37' provided at the lower end of the lock rod.

(Example) In FIG. 7, A is a parallelogram link mechanism that constitutes a tailgate lifter. The gate plate 9 is supported by the lift arm 11 and the pin 13 side of a vertical arm 14 connected to the ends of the tension arm 12 by pins 13, 13'. The lift arm 11 is connected by pins 18 to rotating side plates 17 fixed to both ends of a rotating shaft 16 that is rotated via the arm by a cylinder (not shown) supported by a frame 15 attached to the rear of the vehicle body. It is pivoted. Also, the tension arm 12 is attached to the frame 15.
It is pivotally connected to by pin 19.

Now, after giving a brief explanation of the invention previously filed by the present applicant (Utility Model Application No. 165250/1983),
The present invention will be explained.

In FIG. 9, reference numeral 20 denotes a rotation prevention piece for restricting the upward movement of the tension arm 12, which is integrally fixed to the shaft rod 21 by welding. Both ends of the shaft rod 21 are rotatably supported by brackets 22 fixed to the inner lower surface of the lower cross beam 6b. 23 is a sliding piece that converts the rotation of the shaft rod 21 into linear motion;
The cam keeper 7 is attached so as to be slidable in the longitudinal direction on a guide member 24 fixed to the inner lower surface of the cam keeper 7, and can be freely moved in and out of an opening 25 provided on the back side of the cam keeper 7 via a sliding piece operating member. As this sliding piece operating member, in the illustrated example, a long hole 26 is provided in the sliding piece 23, and the long hole 26 is provided in the sliding piece 23.
6 is engaged with the tip of a pawl 27 protruding from the shaft rod 21.

Rotate the rotation blocking piece 20 clockwise by hand to disengage it from the upper surface of the tension arm 12 (see Fig. 9.
(dotted chain line) and the pawl 27 fixed to the shaft rod 21 also rotate in the same direction. When the tip of the claw 27 reaches the other end of the elongated hole 26, the sliding piece 23 is pushed out toward the opening 25 of the cam keeper 7 (phantom line in FIG. 11). Then, as shown in FIG. 12, since the cam insertion hole 28 in the cam keeper 7 is closed, the cam 2 at the lower end of the lock rod cannot be inserted into the cam insertion hole 28. In other words, it becomes impossible to lock.

29 is a spring, one end of which is fixed to the inside of the lower cross beam 6b. In FIG. 9, it is fixed to a support rod 30 that projects inside the lower cross beam 6b. The other end of the spring 29 is fixed to the blocking piece 20 with a pin 31, and when the spring 29 is in the state shown by the imaginary line in FIG.
The blocking of tension arm 12 by
disables locking.

Now, since the blocking piece 20 was operated manually against the spring 29, the operability was not quite satisfactory. The present invention allows the blocking piece 20 to be automatically operated in response to the opening and closing of the door, and will be described below with reference to FIG. 1 and subsequent figures.

In FIG. 1, reference numeral 20 denotes blocking pieces provided in left and right pairs on the outside of the lower cross beam 6b, which are members for blocking the upward movement of the tension arm 12, as in the previous application.
The blocking piece 20 is driven by a blocking piece rotating device 36 provided inside the lower cross beam 6b. A door closing signal from an operating piece 37 (FIG. 2) provided at the lower end of the door 1 is received by a pin 38 and is further transmitted via a rod 39.

The blocking piece 20 is fixed to the end of the rod 39, but since the blocking piece 20 engages with and disengages from the tension arm 12, the lower cross beam 6b is opened vertically at the portion where the tension arm 12 moves up and down. The blocking piece 20 is also attached exactly to this portion. The brackets 35, which pivotally support the ends of the rods 39, are mounted on both sides of this opening.

The blocking piece rotation device 36 has a screw 41 attached to the lower cross beam 6b.
A rod 39 is fixedly attached to the rod and passes through it laterally.
is pivotally supported by bearings 40 attached to both sides of the blocking piece rotating device 36, as shown in FIG. The blocking piece 20 is always biased by a coil spring 42 (FIG. 1) so as to be directed downward as shown in FIG.

The pin 38 is provided horizontally on the upper part of the housing 43 of the blocking piece rotating device 36, and the side facing the actuating piece 37 can be inserted into and retracted from a hole 44 (FIG. 3) formed in the lower cross beam 6b. A collar 45 is attached to the other end of the pin 38.
is attached with bolts 46 to prevent it from falling outward.

When the pin 38 is pushed by the actuating piece 37, it moves inward, and this movement causes the rod 39 to rotate through a mechanism that converts linear motion into rotational motion as described below. Now, a rack 47 is provided on the lower side of the pin 38, and a pinion 48 is engaged with the rack. The pinion 48 is keyed to the rod 39. Therefore, when the pin 38 is pushed by the operating piece 37 at the lower end of the door, the rack 47 and pinion 48 are engaged, so the rod 39 is pushed against the coil spring 4.
A blocking piece 20 that rotates against 2 and is attached to the end thereof.
The tension arm 12 is rotated so as not to impede the upward movement of the tension arm 12.

FIG. 5 shows an alternative to the actuating piece 37, in which case an actuating piece 37' is provided on the opposite side of the cam piece of the cam 2 fixed to the lower end of the lock rod 3. When the lock rod 3 is turned to engage the cam 2 with the cam keeper 7, the operating piece 37' pushes the pin 38 of the blocking piece turning device 36, causing the rod 39 to turn.

FIG. 6 shows another embodiment of the mechanism for converting the linear motion into rotational motion. In this case, when the door is closed, the pin 38 is pressed by the actuating piece 37. Then, the pin 50 between the flanges 51 and 51 fixed to the pin 38 rotates the bracket 49 attached to the rod 39, thereby rotating the rod 39, and as a result, the blocking piece 20 is rotated. It's getting old.

(Function) When the door 1 is closed, the pin 38 is pressed by the actuating piece 37 or 37', resulting in the relationship between the rack and the pinion (Fig. 3) or the relationship between the flange 51 attached to the pin 38 and the pin 50. Rod 39 with mechanism
, the blocking piece 20 is rotated, and the tension arm 12 is free to move upward.

As a result, the tension arm 12 moves upward after confirming that the door is completely closed, and the gate plate 9 can be stored very close to the door without malfunction.

(Effect) When the gate plate 9 is placed in the raised position, the blocking piece 20
When the tension arm 12 is engaged with the tension arm 12, the blocking piece 20 is engaged with the tension arm 12 when retracting. In addition, in order to put the vehicle into a running state, the gate plate 9 is retracted after closing the double doors, but the gate plate 9 is closed before the double doors are closed.
With the tension arm 12 disengaged,
If the quadrilateral link mechanism is raised, the double door 1 and the gate plate 9 will collide and be damaged, but in the present invention, the blocking piece 20 for switching is related to the closing movement of the door 1. This completely prevents erroneous operations.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of a tailgate lifter according to the present invention. FIG. 2 is a rear perspective view of a container equipped with a tailgate lifter according to the present invention. FIG. 3 is a sectional view of the blocking piece drive device. FIG. 4 is a cross-sectional view taken from FIG. FIG. 5 shows another embodiment of the actuating piece. 6th
The figure shows another embodiment of the blocking piece drive device. FIG. 7 shows a tailgate lifter according to the prior application. FIG. 8 similarly shows the state of the gate plate when it is stored. FIG. 9 is a detailed perspective view of the tension arm rotation prevention mechanism. FIG. 10 is an arrow view of FIG. FIG. 11 is a view taken along the arrow in FIG. FIG. 12 is a diagram showing the relationship between the cam keeper and the sliding piece. FIG. 13 is a rear side view of the van-type vehicle. FIG. 14 is also a rear view. In the figure; A...parallelogram link mechanism, V
...Van type vehicle, T...Tailgate lifter,
1... double door, 2... cam, 3... lock rod, 4... bearing, 5... hinge, 6a... (constituting the gate) upper cross beam, 6b... (constituting the gate) lower cross beam , 7... Cam keeper, 8... Loading platform floor, 8a... Gang board, 9... Gate board, 9a...
Notch portion, 11... Lift arm, 12... Tension arm, 13... Pin, 14... Vertical arm, 15... Frame, 16... Rotating shaft,
17... Rotating side plate, 18... Pin, 19... Pin, 20... Rotation blocking piece, 21... Axial rod, 22...
... Bracket, 23 ... Sliding piece, 24 ... Guide member, 25 ... Hole, 26 ... Long hole, 27 ... Claw,
28...Cam insertion hole (of cam keeper), 29...
Spring, 30...branch, 31...pin, 32
... wire, 33 ... stopper, 34 ... stopper, 35 ... bracket, 36 ... blocking piece rotation device, 37, 37' ... actuation piece, 38 ... pin, 3
9...Rod, 40...Bearing, 41...Screw, 4
2... Coil spring, 43... Housing, 44... Hole,
45... Collar, 46... Bolt, 47... Rack, 48... Pinion, 49... Bracket, 5
0...Pin, 51...Flange.

Claims (1)

[Claims for Utility Model Registration] (1) Tension arms 12, which are fixed to both ends of a rod 39 rotatably supported inside the lower cross beam 6b of a van-type vehicle and constitute a parallelogram link mechanism. It is equipped with a blocking piece 20 that can be engaged with and detached from the upper surface, and a blocking piece rotating device 36 that is fixed to the lower cross beam 6b and through which the rod 39 passes. When the rod 3 is pressed inward by the actuating piece 37, the rod 3
9 is rotated, and when the door 1 is closed, a blocking piece 20 fixed to the end of the rod 39 is rotated to restrict the rise of the tension arm 12. Tailgate lifter for van type vehicles. (2) A mechanism for converting the linear motion of the pin 38 into rotational motion in the blocking piece rotation device 36 is a rack 47 provided on the pin 38 and a pinion 4 provided on the rod 39.
8. A tailgate lifter for a van-type vehicle with double doors as set forth in claim 1 of the utility model registration claim. (3) A mechanism for converting the linear motion of the pin 38 in the blocking piece rotation device 36 into rotational motion is achieved by the engagement of the flange 51 provided on the pin 38 and the pin 50 at the upper end of the bracket 49 provided on the rod 39. A tailgate lifter for a van-type vehicle with a double door according to claim 1 of the registered utility model. (4) A double door with double door according to claim 1, 2 or 3 of the utility model registration claim, characterized in that the actuating piece that presses the pin 38 is an actuating piece 37' provided at the lower end of the locking rod. Tailgate lifter for van type vehicles.