JPH0425904Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a locking device for a loading platform gate.
In particular, the present invention relates to a loading platform gate locking device for locking, for example, the tailgate of a pickup vehicle.

PRIOR ART Conventionally, this type of locking device S has, for example,
As shown in FIG. 3, the main components are a base 1 attached to the tailgate (rear plate of the loading platform, not shown) adjacent to the side plate of the loading platform, and a locking pin 3 with one end 2a provided on the base 1. Lever 2 pivoted through
and a link member 4 whose one end 4a is pivotally attached to the lever 2 and engages with a hook member 5 provided on the side plate of the loading platform.

In such a lock device S, the lever 2
As shown in FIG.
As shown in the figure, it is provided so as to be rotatable between a position (open position) when the engagement state with the hook member 5 is released. Further, the link member 4 has its one end 4a engaged at a position closer to the center than the one end 2a of the lever 2.

Therefore, for example, when the lever 2 is turned toward the tightening position as shown in FIG. 3, the other end 4 of the link member 4 (engaging member)
If the hook member 5 is engaged with the lever 2, the link member 4 is pulled toward the tailgate by rotating the lever 2 to the tightening position, and thereby the hook member 5 is fixed on the tailgate side. do.

Conversely, when the lever 2 is turned toward the open position, as shown in FIG. 4, for example,
The link member 4 engaged with the hook member 5 (double-dashed line in the figure) and fastened it to the tailgate side.
(double-dashed line in the figure) is pushed toward the side plate side by the rotation of the lever 2 to the open position, and is detached from the hook member 5.

In addition, conventionally, the link member 4 has been provided with a mechanism that prevents the link member 4 from becoming unnecessary due to sudden rotation of the lever 2 to the tightening position or other vibrations immediately before engagement with the hook member 5. Hook member 5
It is always pressed against the base 1 side (tailgate side) by an appropriate urging means so that it does not separate from the base 1 side (tailgate side).

Problems with the Prior Art By the way, in such a conventional lock device S, as can be seen from FIG.
Since it will always be pressed against the base 1 side (arrow A), if you want to remove this link member 4 from the hook member 5 contrary to the above, first turn the lever 2 towards the open position side. Even if you try to remove the link member 4 from the hook member 5, the link member 4 will
It still remains located just in front of the hook member 5, and if the lever 2 is turned toward the tightening position,
Again, the link member 4 is as shown by the two-dot chain line in the figure.
This results in engagement with the hook member 5.

In this case, the link member 4 is not removed from the hook member 5, and the lever 2 cannot be reliably returned to the tightened position with the link member 4 free. For this reason,
The operator has to manually pull the link member 4 away from the base 1 side each time, which worsens the workability when opening and closing the tailgate, and also makes it impossible to operate the lever with one hand. This becomes a problem.

Purpose of the invention Therefore, the main purpose of this invention is to convert the engaged member (hook member) to the engaging member (link member).
To provide a locking device for a loading platform gate with good workability, which allows the lever to be returned to the tightened position with the engaging member left in a free state after it has been removed, and which enables one-handed operation of the lever again. That's true.

Structure of the invention In order to achieve the above object, the main means adopted by this invention are a base mounted on one side of mutually adjacent loading platform gates, one end of which is pivoted to the base, and a locking position and an open position. a lever mounted on the lever so as to be rotatable between positions; A loading platform gate locking device comprising an engaged member of a lever and an engaging member that engages,
A link member whose one end is attached to the lever and which pushes the engaging member away from the engaged member when the lever is rotated to the open position is engaged with the engaging member, and the base Another feature is that a guide means is provided for rotating the engaging member pushed out by the link member in a direction away from the engaged member.

Function For example, when the engaging member is engaged with the engaged member and the lever is turned toward the open position, the engaging member is pushed away from the engaged member by the link member.

Then, the engaging member separates from the engaged member,
Further, when pushed out toward the engaged member by the link member, the engaging member is further rotated in a direction away from the engaged member by the guide means.

At this time, the engaging member does not engage with the engaged member, and the lever is returned while leaving the engaging member in a free state.

Effects of the invention According to this invention, after the engaging member is removed from the engaged member, the lever can be returned to the tightened position while the engaging member remains in a free state. Further, in this case, this lever can be operated with one hand, which improves work efficiency when opening and closing the tailgate, for example.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

Embodiment FIG. 1 is a side view of a loading platform gate locking device according to an embodiment of the present invention, and FIG. 2 is a side view showing another embodiment of the loading platform gate locking device shown in FIG. 1.

Note that the following example is only one specific example of this invention, and the technical scope of this invention is not limited by this example. Further, the same reference numerals will be used to describe the same elements as those of the conventional loading platform gate locking device shown in FIGS. 3 and 4.

In Figure 1, the loading platform gate locking device
S' adopts the same locking device S shown in FIGS. 3 and 4 as its basic structure, and corresponds to the base 1 (see FIG. 3), for example, and the loading platform side plate G.
A base 1' is attached to the side of the tailgate C adjacent to the base 1', a lever 2 whose one end 2a is pivoted via a locking pin 3 provided on the base 1', and a link member 4 (see Fig. 3). ), the lever 2 is provided with a link member 4' having one end 4a' attached thereto.

A storage case portion 10 is integrally provided on the base 1' at the other end 1b' side opposite to the one end 1a' side to which the lever 2 is pivoted.

An arm 11 forming the main body of the engaging member is slidably fitted into the storage case portion 10, and one end 11a of the arm 11 facing the lever 2 has the other end of the link member 4'. The portion 4b' is rotatably attached to the one end portion 11a via a connecting pin 17 fixed to the one end portion 11a. As a result, arm 11
is connected to the lever 2 via the link member 4'.

Next, the other end portion 11b of the arm 11 is provided with a hole protruding from the arm 11 at a substantially right angle so as to face an engagement hole 20 provided on the side plate G of the cargo platform adjacent to the tailgate C at right angles. An arm head 12 is provided. A claw 13 is abutted on the arm head 12 and further projects a key portion 13c toward the opposing engagement hole 20.

One end 13a of the claw 13 is inserted into the storage case section 10, and the other end 13b is rotatably engaged with a shaft pin 14 provided on the end side 12a of the arm head 12. . and,
A tension spring 15 installed in the storage case 10 is attached to one end 13a of the claw 13, and the tension spring 15 causes the claw 13 to face each other with the shaft pin 14 as the center of rotation. The lock portion 13c is biased in the direction of engagement with the engagement hole 20 (arrow B). Therefore, the key portion 13c is inserted into the engagement hole 20.
When engaging, the tension spring 15 urges it in the direction of the arrow B and it is elastically inserted.

Next, as part of the characteristic components of this invention, a long hole 16 (guide means) extending along the sliding direction of the arm 11 is formed in the side wall 10a of the storage case section 10. A connecting pin 17, to which the other end 4b' of the link member 4' is pivotally attached, is passed through.

In this case, the elongated hole 16 includes a parallel hole 16a formed substantially parallel to the tailgate C, and an inclined hole 16a inclined toward the other end 1b' of the base 1' and away from the tailgate C. 16b. Note that, in the tailgate side portion of the storage case portion 10, in correspondence with the inclined hole 16b, there is a sloped portion 1 inclined in accordance with the slope angle of the sloped hole 16b.
0b is formed. This inclined portion 10b is
The one end 11a of the arm 11 that has been sliding here comes into contact with the tailgate C side portion 11c, and the inclined hole 1
In cooperation with the connecting pin 17 located at 6b, the arm 11 moving within the storage case section 10 is forcibly guided in the direction of inclination thereof.

Therefore, as shown in FIG.
The lever 2 of S' is turned to the above-mentioned so-called tightening position (arrow D), and the key part 13c of the claw 13 is turned.
When the lever 2 is engaged with the engagement hole 20 and fixing the tailgate C to the side plate G of the cargo bed, as shown in FIG. D'), the link member 4' (shown by the solid line in the figure) responds to the rotation of the lever 2 to the open position.
Push out the arm 11 inside the storage case part 10 toward the loading platform side plate G side.

At this time, the arm 11 moves while being regulated by the parallel hole 16a of the elongated hole 16 via the connecting pin 17 (arrow E). At the same time, the arm head 12 moves in parallel along the tailgate C, and the hook portion 13c of the claw 13 is pulled out from the engagement hole 20.

Next, lever 2 is turned in the direction of arrow D',
For example, when the link member 4' (double-dashed line in the figure) is rotated to the open position shown by the two-dot chain line in the figure, the link member 4' (two-dot chain line in the figure) is located inside the storage case part 10 in accordance with the rotation of the lever 2 to the open position. Furthermore, the arm 11 is attached to the loading platform side plate G.
Push it to the side.

At this time, the connecting pin 17 is connected to the inclined hole 1 of the elongated hole 16.
6b, and the arm 11 is guided by this connecting pin 17.
While the oblique hole 16b of the long hole 16 is regulated through the
Further, the tailgate C side portion 11c of the arm 11 begins to rotate in the direction away from the tailgate C (arrow F) while being restricted by the inclined portion 10b of the storage case portion 10 that comes into contact with it. At the same time, arm head 12
also rotates in the direction away from the loading platform side plate C (arrow F),
The arm 11 inserts the key portion 13c of the claw 13 into the engagement hole 2.
0 to avoid it without engaging it. At this time,
The lever 2 is returned from the open position shown by the two-dot chain line in FIG. 2 to the closed position shown in FIG. 1, and the locking device S' is released from the side plate G.

In addition, this lever is always attached to lever 2.
By attaching a biasing member that biases the tailgate toward the closed position, all you need to do to unlock the tailgate C described above is to turn the lever 2 toward the open position. The return function has the advantage of automatic return.

Also, when locking the tailgate C, as opposed to unlocking the tailgate C,
As mentioned above, if a suitable biasing member is attached to this lever 2, it is only necessary to rotate the tailgate C while this lever 2 is turned to the open position, and the lever 2 can be moved to the closed position. This return function has the advantage that the tailgate C can be reliably locked without the key portion 13c of the pawl 13 unnecessarily coming off from the engagement hole 20.

In the above embodiments, the case where the lock device is attached to the tailgate side has been described. However, in addition to this, this locking device
For example, it goes without saying that it may be provided on the side plate of the loading platform adjacent to the tailgate.

[Brief explanation of the drawing]

FIG. 1 is a side view of a loading platform gate locking device according to an embodiment of the present invention; FIG. 2 is a side view showing another embodiment of the loading platform gate locking device shown in FIG. 1;
FIG. 3 is an overall perspective view of a conventional loading platform gate locking device which is the background of this invention, and FIG. 4 is a side view showing another embodiment of the loading platform gate locking device shown in FIG. Explanation of symbols, S′...Locking device for loading platform gate,
1'...Base, 2...Lever, 4'...Link member, 11...Arm, 12...Arm head, 1
3...Claw, 16...Long hole, 20...Engagement hole, C...
...Tailgate, G...side plate.

Claims (1)

[Claims for Utility Model Registration] A base that is attached to one side of mutually adjacent loading platform gates, and one end of which is pivoted to the base so that it can rotate between a closed position and an open position. a lever; and an engagement provided on the lever that separates from an engaged member provided on the other side of the cargo platform gate in response to an opening operation of the lever and engages with the engaged member in response to a tightening operation thereof; In the loading platform gate locking device, the link member has one end attached to the lever and pushes the engaging member away from the engaged member when the lever is rotated to an open position. What is claimed is: 1. A locking device for a loading platform gate, comprising: a guide means that engages with an engaging member and rotates the engaging member pushed out by the link member in a direction away from the engaged member on the base;