JP3521537B2 - Roll stopper open / close holding mechanism - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mechanism for holding an open / closed state of a roll stopper provided on a tail lift of a carrier.

[0002]

2. Description of the Related Art Conventionally, in various relatively large-sized transport vehicles, the side wall and the back side of the loading platform are constituted by an opening / closing member which can be opened and closed, and the opening / closing member is opened and closed to load the luggage on the loading platform. It is designed to carry in and out. 10 to 12 show a tail lift provided on the back surface of a carrier, which is an example of a conventional opening / closing member of this type,
In the figure, reference numeral 1 is a ground plate (opening / closing member) which constitutes the openable / closable outer wall of the back surface. The ground plate 1 is a member having a double structure having an outer wall plate 2 and an inner wall plate 3 both made of aluminum. It is mounted freely and vertically. As shown in FIG. 10, when the ground plate 1 is opened by the links 4 and the hydraulic cylinders 5, the inner wall plate 3 serves as a loading / unloading path for luggage. For example, the open state shown in FIG. When carrying the above-mentioned luggage into the loading platform from the ground, the above-mentioned luggage is usually placed in a bucket with casters or on the loading platform, and once loaded from the ground, the ground plate 1
After being placed on the inner wall plate 3 of the above, the link 4 and the hydraulic cylinder 5 are operated as they are to operate the ground plate 1
Is moved up to the same level as the loading platform, and then the load is moved from above the ground plate 1 into the loading platform, and then the ground plate 1 is rotated to close the back surface of the loading platform.

By the way, when the load is carried in on the loading platform through the ground plate 1 in this manner, the ground is provided so that the caster carrying the load can smoothly move from the ground to the ground plate 1. The plate 1 is provided so that the tip 1b side thereof inclines slightly downward in the open state, so that the ground plate 1 itself is lifted together with the load, especially after the load is moved from the ground onto the ground plate 1. When this is done, there is a risk that the casters will move along the slope of the ground plate 1 and slip off from the tip 1b thereof. For this reason, in a tail lift of this type, a roll stopper 6 for locking the movement of the casters and preventing the casters from sliding down is provided on the side of the tip portion 1b of the inner wall plate 3 of the ground plate 1.
Is provided.

11 and 12 show the structure of the roll stopper 6, and reference numeral 7 in the drawings is a flap (plate member) 7 of the roll stopper 6. The flap 7 is a strip-shaped member having the same shape as the elongated rectangular opening 3a formed in the width direction on the tip side of the inner wall plate 3 of the ground plate 1, and is provided at a predetermined position (two positions in the figure) on the back surface thereof. Is
An L-shaped rotating metal fitting 8 having a short side hanging downward is fixed. On the other hand, a similar L-shaped fixing metal fitting 9 is fixed on the outer wall plate 2 of the ground plate 1 facing the rotating metal fitting 8, and the short side portions of the rotating metal fitting 8 and the fixing metal fitting 9 are fixed. The flap 7 is openably and closably provided in the opening 3a of the inner wall plate 3 by inserting the pin 10 therebetween. On the outer periphery of the pin 10, a spring (urging means) (not shown) which is interposed between the rotating metal fitting 8 and the fixed metal fitting 9 and biases the flap 7 in the opening direction is attached. A flap stopper 11 for pressing the upper surface of the flap 7 and holding it in a closed state is provided on the upper surface of the inner wall plate 3 located on one end side of the flap 7 so as to be rotatable around a shaft 12. There is. A locking plate 7a is integrally formed at the open end of the flap 7 located on the base end 1a side of the ground plate 1 to prevent the caster from sliding down when the flap 7 is open. Has been done.

In the roll stopper 6 having the above structure, the flap stopper 11 serving as the open / close holding mechanism is used, and when the flap 7 is not used during traveling, the flap 7 is first resisted against the biasing force of the spring. Is closed to the opening 3a side and the flap stopper 11 is rotated to lock the upper surface of the flap 7 to hold the flap 7 in the closed state. Further, as shown in FIG. 10, when it is desired to use the flap 7 when carrying in luggage, the flap stopper 11 is rotated to release the engagement with the upper surface of the flap 7 so that the biasing force of the spring can be applied. The flap 7 is opened. As a result, when the caster on the inner wall plate 3 of the ground plate 1 slides toward the tip side 1b along the inclination of the ground plate 1, its movement is locked by the locking plate 7a of the flap 7. Sliding from the ground plate 1 is prevented. On the contrary, when the ground load is carried on the ground plate with the flap 7 open, if the caster carrying the load is moved as it is onto the inner wall plate 3 and passed over the flap 7. The flap 7 is once closed by the weight of the load larger than the urging force of the spring, and after the caster has passed, the flap 7 is returned to the open state by the urging force of the spring and the tip side 1a of the caster.
Is prevented from sliding down.

[0006]

However, in the above-described open / close holding mechanism for the roll stopper 6, the flap 7 is held open only by the biasing force of the spring when the flap 7 is open. Therefore, after the caster loaded with luggage is passed over the flap 7 and placed on the inner wall plate 3 of the ground plate 1, for example, if an operator accidentally steps on the flap 7 with his / her foot, the flap 7 is easily removed. There is a problem that the casters on the ground plate 1 are closed, and as a result, the casters on the ground plate 1 again pass along the closed flap 7 along the slope and slide off from the tip 1b side.

The present invention has been made in order to effectively solve the problems of the conventional opening / closing mechanism for a roll stopper, and a plate-shaped member for opening / closing the roll stopper is provided.
An object of the present invention is to provide an open / close holding mechanism for a roll stopper that can switch and hold not only the closed state and the opened state by only the biasing means, but also the state fixed to the open position.

[0008]

An open / close mechanism for a roll stopper according to the present invention according to the present invention comprises at least an outer wall plate and an inner wall plate, and a base end portion thereof is rotatably attached to a bed of a vehicle. An opening / closing switching member provided on the plate member of the roll stopper movably provided on the opening of the inner wall plate of the opening / closing member, which can be opened / closed by the urging means, and the opening / closing switching member. An operating means for moving the member in a variable manner is provided, and is engaged with a part of the opening / closing switching member when the plate member is in the closed position due to the moving of the opening / closing switching member in the opening of the inner wall plate of the opening / closing member. In addition, an engaging member that holds the closed state and is engageable with the other part of the open / close switching member when the plate-shaped member is in the open position is provided.

The invention described in claim 2 is the same as claim 1.
In the invention described in (1), the open / close switching member is a switching plate provided above the engagement member so as to be movable along a switching groove formed in the inner wall plate, and the operating means is the switching plate. In addition to the operation knob attached to the upper surface side of, the switching plate located on the back side of the inner wall plate,
When the plate-shaped member is in the closed position along the moving direction,
A first engagement portion that engages with the engagement member, a non-engagement portion that does not engage with the engagement member, and a second engagement portion that engages with the engagement member when the plate member is in the open position. And an engaging portion of the.

Further, the invention according to claim 3 is that the engaging member according to claim 2 is a switching ratchet rotatably provided toward the switching plate, and the engaging member includes: The first engaging portion is a claw portion that engages with the switching ratchet when the plate member is in the closed position, and the second engaging portion is the hook when the plate member is in the open position. It is characterized in that it is a locking surface which contacts the upper surface of the switching ratchet and locks the downward movement of the plate member.

According to a fourth aspect of the present invention, in the first aspect of the present invention, the opening / closing switching member is a switching plate swingably provided on the back surface of the inner wall plate, and The operating means is an operating knob attached to the switching plate and extending to the upper surface side of the inner wall plate, and the engaging member has one end portion in the swinging direction of the switching plate at the closed position of the plate member. And a second engaging member that is engageable with the other end of the switching plate in the swing direction at the open position of the plate-shaped member. To do.

Further, in the invention according to claim 5, the operating means according to claim 4 has a switching groove formed in the inner wall plate, and a shaft member for guiding the switching plate along the switching groove. And the operation knob, and the first
The engaging member is a holding member provided on one end side of the switching groove to which one end of the plate-like member fits, and the second member
The engaging member is a concave portion provided on the other end side of the switching groove and fitted with a convex portion formed on the other end portion of the switching plate.

According to a sixth aspect of the present invention, in the invention according to any one of the first to fifth aspects, the opening / closing member is a ground plate for a tail lift of a transport vehicle, and the plate-shaped member is used. Is a flap of a roll stopper provided on the ground plate.

[0014]

In the invention according to any one of claims 1 to 5, the opening / closing switching member provided so as to be movable or swingable by operating means is changed, and the above-mentioned part thereof is changed. Is engaged with an engaging member provided in the opening of the inner wall plate of the opening / closing member, whereby the plate member is fixed to the closed position. Further, the plate-shaped member is held in the opened state only by the urging means by changing the opening / closing switching member and disengaging the part from the engaging member. Further, by engaging the other portion of the open / close switching member with the engaging member, the plate member is fixed to the open position. Therefore, according to the open / close holding mechanism for the roll stopper, the open / close switching member is appropriately swung to engage a part or other part of the open / close switching member with the engaging member, or the open / close switching member with the engaging member. By not engaging, the plate member can be fixed in the closed state, fixed in the open state, or held in the open state only by the urging force of the urging means for carrying in and out of luggage. It is possible to freely switch to the optimum position according to the situation.

Here, in the invention described in claim 1,
The switching plate, which is the opening / closing switching member, is an embodiment in which the switching plate is movably provided. To maintain the plate-like member in the closed state according to the invention, the switching plate is moved along the switching groove by the operation knob. The plate-like member is held in the closed state by moving the first engaging portion of the switching plate with the engaging member. Further, when opening the plate-shaped member from the closed state, the operation knob of the switching plate is further moved along the switching groove to engage the first engaging portion with the engaging member. At the same time as releasing, the engaging member is positioned in the non-engaging portion.
As a result, the plate member is opened by the urging force of the urging means.
Further, in order to fix the plate-shaped member in the open state, the switching plate is further moved to engage the second engaging portion with the engaging member. As a result, the plate member is fixed in the open state.

Further, in the invention according to claim 3, in order to hold the plate-like member in the closed state, the switching plate is moved to the switching ratchet side along the switching groove by the operation knob, and the claw portion of the switching plate is moved. Engage with switching ratchet.
Next, when the plate-shaped member is opened from the closed state, the operation knob of the switching plate is further moved along the switching groove to position the switching ratchet at the non-engagement portion. Then, since the engagement between the claw portion and the switching ratchet is released, the plate member is opened by the urging force of the urging means. Next, in order to fix the plate member in the open state, the switching plate is further moved so that the locking surface thereof is located above the switching ratchet. Accordingly, the downward movement of the plate-shaped member is blocked by the contact of the locking surface with the switching ratchet, so that the plate-shaped member is fixed in the open state.

Next, in the invention described in claim 1,
According to the invention of claim 4, which is another embodiment in which the switching plate that is the opening / closing switching member is swingably provided, the switching plate is swung by the operating means, and one end of the switching plate is moved to the first engaging portion. The plate-shaped member is held in the closed state by engaging the mating member. Further, when the one end portion of the switching plate is disengaged from the first engaging member by the operation means, the plate member is opened only by the urging force of the urging means. Then, the plate member is fixed in the open state by swinging the switching plate to engage the other end portion with the second engaging member.

Further, in the case of holding the plate member in a closed state according to the invention of claim 5, which is another embodiment in which the switching plate is provided so as to be movable and swingable,
The switching plate is rotated by the operation knob, and one end thereof is clamped and fixed by the holding member. Next, when opening the plate-shaped member from the closed state, the operation knob is operated to swing the switching plate toward the other end so that one end of the switching plate engages with the holding member. When released, the plate member is opened by the biasing force of the biasing means. In this state, since the plate-shaped member is opened only by the urging force of the urging means, when a caster or the like passes over the plate-shaped member when carrying in a load, the load is closed freely. Therefore, in order to fix the plate member in the open state, the switching plate is moved to the other end side of the switching groove by operation, and the convex portion of the switching plate is fitted into the concave portion provided at the facing position. Thereby, the plate member is fixed in the open state, the casters and the like on the inner wall plate of the opening / closing member are prevented from slipping off by the plate member, and even if the operator steps on the plate member with his / her foot, The plate member does not close.

As described above, the invention according to any one of claims 1 to 5 is suitable when it is used as an opening / closing mechanism for a flap of a roll stopper provided on the rear surface of a ground plate of a tail lift of a transport vehicle. is there.

[0020]

Embodiment 1 FIGS. 1 to 5 show a first embodiment of an open / close holding mechanism for a roll stopper according to the present invention.
The same components as those shown in 2 are assigned the same reference numerals and explanations thereof will be omitted. Note that, in FIG. 1, in order to clearly show the configuration of the opening / closing holding mechanism, a part of the flap 7 is cut out and the inner wall plate 3 located at the end of the flap 7 is omitted. 1 to 5, in this roll stopper open / close holding mechanism, a leaf spring for urging the flap 7 in the opening direction is placed at a predetermined position between the outer wall plate 2 of the ground plate 1 and the flap 7. A biasing means) 15 is interposed, and the flap 7 is
Is rotatably provided around the shaft 16 provided on the tip 1b side of the ground plate 1 in the opening 3a. Then, on the back surface of one end of the flap 7,
A switching plate (open / close switching member) 20 is provided, and a switching ratchet (engaging member) 21 is provided in the opening 3a of the inner wall plate 3 facing the switching plate 20.
It is provided so as to be rotatable toward 0.

That is, the flap 7 is formed with a switching groove 22 of a predetermined length in the longitudinal direction thereof, and a sandwiching plate having the same shape as the upper surface of the switching plate 20 is formed on the switching groove 22. 20a is provided. The switching plate 20 is movably provided along the switching groove 22 by a bolt 23 inserted into the switching groove 22 from the side of the sandwich plate 20a and screwed onto the upper portion thereof. Further, an operation knob (operating means) 24 for moving the switching plate 20 along the switching groove 22 is provided on the upper surface of the sandwich plate 20a so as to project. The switching plate 20 is shown in FIGS.
As shown in FIG. 5, it is a U-shaped member and has a C-shaped claw portion (first portion) that engages with the switching ratchet 21 when the flap 7 is in the closed position along the movement direction thereof. (Engagement portion) 25, a non-engagement portion 26 that is a missing portion that does not engage with the switching ratchet 21, and the lower surface of the switching plate 20 of the switching ratchet 21 when the flap 7 is in the open position. A concave curved engagement surface (second engagement portion) 27 that abuts on the upper surface and engages the downward movement of the flap 7 is formed.

On the other hand, the switching ratchet 21 is rotatably provided on the mounting seat 28 fixed to the back surface of the outer wall plate 2 toward the switching plate 20 via the pin 29, and the pin 29 is provided. A spring 30 for urging the switching ratchet 21 to the switching plate 20 side is interposed in the. Further, on the rotating side of the switching ratchet 21, the mounting groove 31 of the leaf spring 15 is also used as a stopper of the switching ratchet 21. Further, as shown in FIG.
Both ends of the claw 25 in the moving direction and the switching ratchet 21.
Sloped curved surfaces 25a and 21a for guiding the claw portions 25 to each other when the claw portions 25 move are formed on both end portions of each.

Next, the operation of holding the open / closed state of the flap 7 by using the open / close holding mechanism for the roll stopper having the above-mentioned structure will be described. First, in order to hold the flap 7 in the closed state, from the state shown in FIG. 2 in which the flap 7 is closed against the biasing force of the leaf spring 15, the switching plate 20 is moved along the switching groove 22 by the operation knob 24. It is moved to the switching ratchet 21 side. Then, the claw portion 25 of the switching plate 20 and the switching ratchet 21 are inclined curved surfaces 21 of each other.
a and 25a, the flap 7 is held in the closed state as shown in FIGS. 1 and 3. Then, FIG.
When the flap 7 shown in FIG. 3 is opened from the closed state, the operation knob 24 of the switching plate 20 is further moved along the switching groove 22, and the switching ratchet 21 is moved as shown in FIG. The non-engagement portion 26 is located. Then, the engagement between the claw portion 25 and the switching ratchet 21 is released, so that the flap 7 is released as shown by the chain double-dashed line in FIG.
Is opened by the biasing force of the leaf spring 15. In this state, since the flap 7 is opened only by the leaf spring 15, when the caster passes over the flap 7 from the tip 1b side of the ground plate 1 when carrying in a load, the load freely causes it. close.

Therefore, in order to fix the flap 7 in the open state after the load has passed, the switching plate 20 is further moved so that the locking surface 27 thereof is located above the switching ratchet 21. As a result, even if the flap 7 is pushed down, the locking surface 27 of the switching plate 20 comes into contact with the upper surface of the switching ratchet 21 and the downward movement of the flap 7 is prevented. 7 is fixed in the open state. As a result, the caster C on the inner wall plate 3 of the ground plate 1 is prevented from sliding down by the locking plate 7a of the flap 7, and even if the operator steps on the flap 7 with the foot, the flap 7 is closed. There is no.

As described above, according to the opening / closing holding mechanism of the roll stopper, the switching plate 20 is appropriately moved along the switching groove 22 by the operation knob 27, and the claw portion 25, the non-engaging portion 26 and the locking surface thereof. The flap 7 is fixed in the closed state or the opened state by making any one of the positions 27 coincide with the position of the switching ratchet 21. Further, the flap 7 is held in the opened state only by the urging force of the leaf spring 15. It is possible to freely switch to the optimum position according to the loading and unloading of luggage, such as doing. In particular, the inclined curved surfaces 21 for guiding the claws 25 and the switching ratchet 21 to each other in an engaged state as the claws 25 move, respectively.
Since a and 25a are formed, the claw portion 25 is easily engaged with the switching ratchet 21 by simply moving the switching plate 20 from the state in which the flap 7 is closed, and the flap 7 is closed. Can be fixed.

[0026]

[Embodiment 2] FIGS. 6 to 9 show a first embodiment of an opening / closing mechanism for a roll stopper according to the present invention, which has the same components as those shown in FIGS. 1 to 5 and 10 to 12. Has
Similarly, the same reference numerals are given and the description thereof is omitted. In addition, in FIG. 5, in order to clearly show the configuration of the opening / closing holding mechanism, a part of the flap 7 and the inner wall plate 3 is cut out and drawn. 6 to 9, in the roll stopper open / close holding mechanism, the flap 7 is provided with three switching grooves 40 ... In parallel with each other in the longitudinal direction, and the central switching groove 40 ... A mounting member 42 in which an upper plate 42a and a lower mounting plate 42b are integrated by a shaft member 41 inserted into the switching groove 40 is movably provided, and a pin 43 is attached to the lower mounting plate 42b of the mounting member 42. A switching plate (open / close switching member) 44 is swingably provided via the. As a result, the switching plate 44 is provided so as to be movable along the switching groove 40 of the flap 7 and swingable in the direction orthogonal to the moving direction by the pin 43.

The switching plate 44 has the pin 43 at the center thereof.
Is a plate-shaped member having an external V-shape that is inserted, and the flap 7 is inserted into the adjacent switching groove 40 on the upper surface on one side thereof.
An operation knob 45a protruding upward is attached, and an operation knob 45b protruding on the flap 7 by being similarly inserted into the switching groove 40 on the opposite side is attached to the other side upper surface.
Then, the switching groove 40, the shaft member 41, the mounting member 4
2 and the operation knobs 45a and 45b constitute the operation means of the switching plate 44. Further, one end 44a of the switching plate 44 is bent vertically downward, and a fitting shaft (projection) 46 protruding from the other end 44b in the moving direction is fixed to the side surface of the other end 44b.

On the other hand, a ball catcher is used at a position facing one end 44a of the switching plate 44 on the one end side of the switching groove 40 to clamp and fix the one end 44a when it swings downward. Holding member (first engaging member) 4
7 is fixed on the back surface of the outer wall plate 2. Further, at the position opposite to the fitting shaft 46 of the switching plate 44 on the other end side of the switching groove 40, the switching plate 44 has the other end 44b.
A tube member (recess, second engaging member) 48 that is engaged with the fitting shaft 46 when being swung to the side and moving along the switching groove 40 is fixed.

Next, the operation of holding the open / closed state of the flap 7 by using the open / close holding mechanism of the roll stopper of the second embodiment having the above-mentioned structure will be described. First, in the case where the flap 7 is held in the closed state, as shown in FIGS.
As shown in, the flap 7 is closed and the switching plate 44 is positioned at one end of the switching groove 40 by the operation knob 45a or 45b. Then, from this state, the switching plate 44 is rotated by the operation knob 45a, and the one end portion 44a is clamped / fixed by the ball catcher of the holding member 47. As a result, the closed state of the flap 7 is maintained. Then, the flap 7 shown in FIG. 6 and FIG.
When the switch is opened from the closed position, the operation knob 45b on the opposite side is operated to swing the switching plate 44 to the other end 44b side, as shown in FIG. Then, the one end 44 a of the switching plate 44 is disengaged from the holding member 47, and the flap 7 is opened by the urging force of the leaf spring 15. In this state, since the flap 7 is opened only by the biasing force of the leaf spring 15, when the caster passes over the flap 7 when carrying in a load, the flap 7 is freely closed by the load.

Next, in order to fix the flap 7 in the open state after the load has passed, the operation knob 45a or 4 is used.
The switching plate 44 is moved to the other end side of the switching groove 40 by 5b. Then, the fitting shaft 46 of the switching plate 44 is inserted into the pipe member 48 fixed at the opposing position, whereby the flap 7 is fixed in the open state, and the caster on the inner wall plate 3 of the ground plate 1 is fixed. The stopper plate 7a of the flap 7 prevents the slippage of C, and even if an operator steps on the flap 7 with his / her foot, the flap 7 does not close.

As described above, also with the open / close holding mechanism for the roll stopper of this example, the operating knob 45a is operated to engage the one end 44a of the switching plate 44 with the holding member 47, and the operating knob 45b is operated. To release the engagement, or by using the operation knob 45a or 45b, the switching plate 44
Is moved along the switching groove 40, and the fitting shaft 46 is fitted to the pipe member 48, thereby fixing the flap 7 in the closed state as in the case of the first embodiment. , Or fixed in the open state, or even the leaf spring 1
It is possible to freely switch to an optimum position according to loading and unloading of luggage, such as holding the opened state only by the urging force of 5.

In each of the first and second embodiments, only the example in which the roll stopper open / close holding mechanism of the present invention is applied to the roll stopper provided on the rear surface of the tail lift has been described. The present invention is not limited to this, and is rotatably attached to the loading platform of various transport vehicles to form the opening / closing portion on the back side or the side of the loading platform,
The same can be applied to various roll stoppers provided on the opening / closing member such that the inner wall plate serves as a loading / unloading path for the load in the open state.

[0033]

As described in detail above, the first to third aspects are described.
In the invention described in any one of 5, the opening / closing switching member, which is provided so as to be movable or swingable by operating means, is changed and the above-mentioned part of the opening / closing switching member is moved to the inner wall plate of the opening / closing member. The plate member is fixed to the closed position by engaging with the engaging member provided in the opening, and the open / close switching member is changed and disengaged from the engaging member. The plate-shaped member is held in an open state only by the urging means by,
Further, by engaging the other portion of the open / close switching member with the engaging member, the plate-like member is fixed at the open position. Therefore, according to the open / close holding mechanism of the roll stopper,
The plate member is closed by appropriately swinging the open / close switching member so that a part or other portion thereof is engaged with the engaging member or the open / close switching member is not engaged with the engaging member. Fixed to, or fixed in the open state,
Furthermore, it is possible to freely switch to an optimum position according to loading and unloading of luggage, such as holding the opened state only by the urging force of the urging means.

[Brief description of drawings]

FIG. 1 is a first opening / closing mechanism for a roll stopper according to the present invention.
It is a perspective view of the important section showing an example.

FIG. 2 is a front view showing the shapes of a switching plate and a switching ratchet shown in FIG.

3 is a side sectional view of the flap shown in FIG. 1 in a closed state.

FIG. 4 is a side sectional view of the flap of FIG. 3 in a released state.

5 is a side sectional view of the flap shown in FIG. 1 in an open state.

FIG. 6 is a second opening / closing mechanism for a roll stopper according to the present invention.
It is a perspective view of the important section showing an example.

FIG. 7 is a front view of a main part showing a mounting state of the switching plate of FIG.

FIG. 8 is a side sectional view of the flap shown in FIG. 1 in a closed state.

9 is a side sectional view of the flap of FIG. 1 in an open state.

FIG. 10 is a perspective view showing a main part of a tail lift of a general carrier.

FIG. 11 is a plan view showing a conventional roll stopper.

12 is a sectional view taken along line XII-XII of FIG.

[Explanation of symbols]

1 Ground plate (opening / closing member) 1a base end 1b Tip 2 outer wall boards 3 inner wall plate 3a opening 6 roll stopper 7 flaps (plate members) 15 Leaf spring (biasing means) 16 axes 20,44 Switching plate (open / close switching member) 21 Switching ratchet (engagement member) 22, 40 switching groove 24, 45a, 45b Operation knob 25 Claw (first engaging part) 26 Non-engagement part 27 Locking surface (second engaging portion) 41 Shaft member 44a One end of the switching plate 44b The other end of the switching plate 46 Mating axis (projection) 47 holding member (first engaging member) 48 Pipe member (recess, second engaging member)

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kimoro Kato 2-3-3 Shiba, Minato-ku, Tokyo Mitsubishi Aluminum Co., Ltd. (72) Inventor Masatsugu Kato 2-3-3 Shiba, Minato-ku, Tokyo Mitsubishi In Aluminum Co., Ltd. (72) Inventor Hiroshi Bandai 2-3-3 Shiba, Minato-ku, Tokyo Mitsubishi Aluminum Co., Ltd. (72) Inventor Yoshiya Suzuki 194 Senfuku, Susono, Shizuoka Prefecture Mitsubishi Aluminum Co., Ltd. (72 ) Inventor Takashi Sato 194 Senfuku, Susono City, Shizuoka Mitsubishi Mitsubishi Aluminum Co., Ltd. (56) References JP-A-62-152937 (JP, A) JP-A-56-138031 (JP, A) Mitsuihei 4-23534 (JP, U) Actually developed 62-90838 (JP, U) Actually developed 6-12184 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60P 1/44

Claims (6)

(57) [Claims] 1. An opening / closing member comprising at least an outer wall plate and an inner wall plate, a base end portion of which is rotatably attached to a cargo bed of a vehicle and in which the inner wall plate serves as a loading / unloading path for cargo in an open state. The plate-shaped member is provided in an opening formed in the inner wall plate so as to be openable and closable, and a biasing unit that biases the plate-shaped member in the opening direction. A mechanism for locking the slippage of the luggage at the open side end of the strip-shaped member and for holding the open / closed state of the roll stopper that allows the luggage to pass therethrough in the closed state. The member is provided with an opening / closing switching member that is movably provided on the plate-like member, and an operating means for moving the opening / closing switching member, and the opening / closing switching member is provided in the opening of the inner wall plate of the opening / closing member. The plate-like member moves to the closed position due to An engaging member that engages with a part of the open / close switching member to maintain the closed state and is engageable with the other part of the open / close switching member when the plate member is in the open position. A roll stopper open / close holding mechanism characterized by being provided. 2. The opening / closing switching member is a switching plate provided above the engagement member so as to be movable along a switching groove formed in the inner wall plate, and the operating means is the switching plate. In addition to the operation knob attached to the upper surface side of, the switching plate located on the back side of the inner wall plate,
A first engaging portion that engages with the engaging member, a non-engaging portion that does not engage with the engaging member, and the plate when the plate-shaped member is in the closed position along the moving direction. The opening / closing mechanism for a roll stopper according to claim 1, wherein a second engaging portion that engages with the engaging member when the member is in the open position is formed. 3. The engaging member is a switching ratchet rotatably provided toward the switching plate, and
The first engaging portion of the engaging member is a claw portion that engages with the switching ratchet when the plate member is in the closed position, and the second engaging portion is the plate member. The opening / closing mechanism of the roll stopper according to claim 2, wherein the locking stopper is a locking surface that contacts the upper surface of the switching ratchet and locks the downward movement of the plate-shaped member when the switch is in the open position. . 4. The opening / closing switching member is a switching plate swingably provided on the back surface of the inner wall plate, and the operating means is attached to the switching plate and extends to the upper surface side of the inner wall plate. In addition to the operation knob, the engaging member includes a first engaging member that engages with one end of the switching plate in the swing direction at the closed position of the plate-shaped member, and an opening of the plate-shaped member. The opening / closing mechanism for the roll stopper according to claim 1, further comprising a second engaging member that is engageable with the other end of the switching plate in the swinging direction at the position. 5. The operating means comprises a switching groove formed in the inner wall plate, a shaft member for guiding the switching plate along the switching groove, and the operating knob.
The first engaging member is a holding member which is provided on one end side of the switching groove and into which one end of the plate-shaped member is fitted.
The second engaging member is a concave portion provided on the other end side of the switching groove and fitted with a convex portion formed on the other end portion of the switching plate. Opening / closing mechanism for the roll stopper described. 6. The opening / closing member is a ground plate of a tail lift of a transport vehicle, and the plate member is a flap of a roll stopper provided on the ground plate. 5. The open / close holding mechanism for the roll stopper according to any one of 5 above.