JP3474887B2 - Truck carrier wing opening and closing device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a so-called wing provided on a truck bed for protecting a cargo from rain, wind, dust, etc.
The present invention relates to a wing opening / closing device for a truck bed, which can be easily stopped manually and at the same time can be stably stopped at an arbitrary opening, and which is not greatly agitated even in a gust of wind.

[0002]

2. Description of the Related Art Among trucks, so-called van cars, have a luggage box with a sealed structure to protect the luggage from rain, wind, dust, etc. and to avoid loss or theft of the luggage. It is adopted. However, it is naturally desirable that the cargo box has a large opening for loading and unloading. 3 For that purpose, several methods have been conventionally adopted as follows. For example, it is a method of loading and unloading loads from the side plates at the rear of the luggage box which are opened at both sides. However, depending on the shape, size, and weight of the load, loading and unloading from the rear of the truck can be very inconvenient.

In such a case, it is necessary to open and close both sides of the luggage box. Sliding doors are provided on both side plates, or a hood is used instead of the side plates. It is used to wind up or accordion doors that open and close left and right. However, the sliding door type cannot be constructed so that the entire side plates on both sides are open, and the hoisting type using a hood or the accordion door type is too large due to strength problems. It had the drawback of not being able to.

The structure shown in FIG. 21 eliminates this drawback, and both have a structure in which part or all of the side plates are flipped up together with the roof plate. In this case, a part or all of this side plate and the roof plate are integrated (shown by an arrow P in the drawing), which is usually called a wing. FIG. 22 is a perspective view showing a state in which the wings are fully opened. These structures have wide openings on both sides of the luggage box, making them extremely convenient for loading and unloading. Various new techniques have been disclosed for the mechanism for raising and lowering the wings.
Seiko Giken Co., Ltd., a subsidiary company of the applicant of the present application, presents the following technologies. 1985 Utility model registration application publication No. 002980 "Assembly type hood opening / closing mechanism for freight vehicles" 1975 Utility model registration application publication No. 050014 "Wrapping hood for hood trucks" 55 utility model registration application Announcement No. 050015 4 "Holo-carrying vehicle" Application for public utility model registration published in 1984 No. 140916 "Opening and closing mechanism for trolley frame of lorry vehicle" Application for registration of utility model registration No. 003116 "Cargo vehicle hood" Opening / Closing Mechanism of Hanger Frame ”1985 Utility Model Registration Application Publication No. 004421“ Mounting structure of hydraulic cylinder in opening / closing actuation mechanism of hood frame of lorry ”

The mechanism for raising and lowering the wings, including the one described above, includes a drive system for the raising and lowering actuation mechanism,
It can be classified as follows depending on the operation method, but each has its advantages and disadvantages. Hydraulic drive: The weight of the parts is large due to the large number of button or lever operating components, which significantly reduces the vehicle weight. High technology is required in design and manufacturing. Further, troubles of hydraulic equipment are predicted to occur, and high technology is required to cope with them. Electric type; button operation Drives winch by battery power and opens / closes wing by rope. It has a drawback of poor reliability. Spring method; rope operation This method is a method in which the rope is manually driven by balancing the weight of the up and down wings with the force of the spring. By using a coil spring for that spring, you can almost balance the moment, but since the rope is stretched around the packing box, this rope gets caught in some obstacle, which causes the wings to It may be opened and closed unexpectedly, which is dangerous. Spring type; lever operation, transmission by rod, etc. This method was developed in order to eliminate the above-mentioned drawbacks, while operating the lever at the bottom of the packing box while balancing the weight of the wings with the force of the spring, This is a method of transmitting the movement of 5 by means of highly rigid parts such as levers and rods to open and close by rotating the rotary shaft to which the wings are fixed. This is also the method used by Seiko Giken Co., Ltd. Is proposed (Patent Application No. 128499 in 1986). With this method, the operating levers and transmission parts can be installed along the packing box, so there are advantages that there are no malfunctions due to obstacles and springs can be easily adjusted, but when strong wind blows outdoors, etc. The wind exerts a force on the wings, and the force is transmitted to the operating lever by a highly rigid component, making it difficult to operate.
In some cases, the drawbacks of operation were inevitable.

Furthermore, there has been proposed an example in which two types of springs are conventionally used for balancing the weight of the wings. One of them is a combination of a torque spring and a tension spring (published application for utility model registration No. 130716 in 1991), and another example is a combination of a compression spring and a tension spring (1992). There is a utility model registration application publication No. 13223). In both cases, the springs having different characteristics are used together, so that the balance of moments at each opening of the wings can be adjusted precisely. However, in each of these cases, a large space is required because the two springs are installed at one place, and therefore there is a drawback that a wide opening cannot be obtained. Further, in both cases, since the rope is used for the opening / closing operation, there is a drawback that an erroneous operation is caused by an obstacle as described above.

[0007]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention solves the above-mentioned drawbacks of the conventional wing opening / closing device for a truck bed, secures a large opening in the luggage box, and may cause an opening / closing malfunction due to an obstacle. In addition, the operation can be performed reliably and safely during cargo handling in a windy place.
Furthermore, another object of the present invention is to provide a wing opening / closing device for a truck bed, which can precisely adjust the balance of moments at each opening of the wing. 6

[0008]

SUMMARY OF THE INVENTION The present invention solves the above problems by providing a wing opening / closing device for a truck bed with the following structure. That is, it is a wing opening / closing device for a truck bed which is provided at the top of the truck bed and which rotates the wings forming the outside of the luggage box to release the side surfaces and facilitate loading and unloading of luggage, and the wing opening and closing device for the front of the truck bed. A compression spring elastically mounted between the spring seat, a spring shaft having one end attached to the spring seat, three pivot points, and pivotally attached to the vehicle body at the first pivot point; A link pivotally attached to the other end of the spring shaft at a second pivot point and four pivot points, and pivotally attached to the vehicle body at the first pivot point; , An arm B having one end pivotally attached to the other end of an arm A pivotally attached to the wing, and one end and the other end thereof pivotally attached to a third pivot point of the link and arm B, respectively. Adjustable rod with adjustable length and truck top A tension spring elastically mounted between the rear vehicle body and the wing, an operating rod whose one end is pivotally attached to the fourth point of the arm B, and one end is pivotally attached to the other end of the operating rod, It comprises an operation handle pivotally attached to the vehicle body near one end and a grip at the other end, and a lock device attached to the operation handle.

As an example of the above-mentioned locking device, a half ring attached to a vehicle body and having a shape of a part of a cylinder,
Mutually the a shaft that is fixed relative to the operating handle, having a pawl which slides inside surface of the half-ring at one end, the shaft near one end thereof which is fixed against the operating handle
2 and the lock lever being pivotally attached to one end pivotally attached to the other end of each of said locking levers, and two links which other end is pivotally attached to each other, between two of the locking lever A tension spring elastically mounted on the lever, a lever bracket having one end pivotally mounted near the grip of the operation handle, a lock release lever attached to the other end of the lever bracket, and a lever bracket of the lever bracket. a wire for connecting the other end of <br/> the two links are pivotally attached to the other end and another, there is made of.

7. As another example, the lock device has two ratchets fixed to a vehicle body and a claw that engages with the ratchet at one end, and the other end rotates together with the operation handle. The operation handle composed of two ratchet pawls pivotally attached to the member, two links one end of which is pivotally attached near the pawls of the ratchet pawls and the other end of which are pivotally attached to each other, and a pipe material. A push rod inserted through the inside, a push button attached to the tip of the push rod, a compression spring elastically mounted between the push button and the operation handle, and a lower portion of the push rod, Some of them include a pin attached so as to abut on the upper end of the other end of the link of the two links, and a spring that urges the ratchet pawl in a direction to press the ratchet pawl.

Further, as another example of the lock device, a rotating shaft provided at a pivotally attached portion of the operating handle to the vehicle body, an output shaft mounted to the rotating shaft via a mechanical brake, and the output. It is conceivable that the shaft comprises a connecting lever that connects the other end of the operating rod.

Since the wing opening / closing device of the truck bed according to the present invention is constructed as described above, a large opening can be secured in the side part of the luggage box and no rope is used. Don't worry. Further, since the lock device is connected to the operation handle, it is possible to prevent accidents such as being unable to open and close the wings due to strong winds and dropping the opened wings. Furthermore, since the tension spring and the compression spring are provided and their characteristics are different from each other, the moment based on the weight of the wing at each opening and the moment based on the spring force can be precisely adjusted. Further, since the operating mechanism such as the operating handle is concentrated on the front part of the packing box, there is no fear that it will hinder the cargo handling.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of an entire wing opening / closing device for a truck bed according to the present invention. In the figure, a cargo box 3 is formed above the cargo bed 2 of the truck 1. A front 8 underframe 4a is provided in the front part of the packing box 3, a rear underframe 4b is provided in the rear part thereof, and a main beam 5 for connecting the front underframe 4a and the rear underframe 4b is provided in the upper center of the packing box. A rotary shaft 5a and a support shaft 5b are attached to both sides of the main beam. A pair of roof frames 6 are provided from the center of the upper part of the luggage box 3 to both sides thereof, and one end of the roof frame 6 is attached to the rotating shaft 5a so as to be rotatable around the rotating shaft 5a. An outer cover 7 is attached to the outer side of the roof frame 6, and a wing 8 is formed by the roof frame 6 and the outer cover 7. Near the center of the upper part of the front underframe 4a, the front support portion 9 of the wing opening / closing device for the truck bed is provided.
A rear support portion 10 is attached near the center of the upper portion of b, and an operation rod 11, an operation handle 12 and a lock device 13 connected to the front support portion 9 are provided on the front underframe 4a.

FIG. 2 is a front view showing the details of the front support portion 9 of the wing opening / closing device of the truck bed, FIG. 3 is a side view thereof, and FIG. 4 is a view of the AA cross section of FIG. Is. 2 to 4, a bracket main body 20 is attached to the cross member of the front underframe 4a, and one end of a link 21 and an arm B23 are pivotally attached to the bracket main body 20 via pins, respectively. A compression spring 26 inserted in a spring case 30 is mounted between one surface of the bracket main body and the spring seat 27, and one end of a spring shaft 28 is attached to the spring seat by a nut 29. There is.
The other end of the spring shaft 28 is pivotally attached to the second end of the link 21 via a pin. One end of an arm A24 is pivotally attached to the second end of the arm B23 via a pin.
The other end of is attached to a plate 25 attached to the roof frame 6 via a pin. One end of a length-adjustable adjusting rod 22 composed of a nut and two screw rods having forward and reverse screws is pivotally attached to a third end of the link 21 via a pin, and the other end is Is arm B through the pin
Is pivotally attached to the third end of the. The spring force of the compression spring 26 is transmitted to the roof frame 6 via the spring shaft 28, the link 21, the adjusting rod 22, the arm B23, the arm A24, and the plate 25, and is combined with the spring force of the tension spring described later. 8 is adjusted so as to balance with the moment based on gravity at each opening degree. 9

FIG. 5 is a front view showing the details of the rear support portion 10 of the wing opening / closing device of the truck carrier, FIG. 6 is a view of the AA plane in FIG. 5 seen in the direction of the arrow, and FIG. 7 is B in FIG. FIG. 3 is a view of the surface B in the direction of the arrow and a side view of the spring bracket. 5 to 7, the arm bracket 41 (2 in FIG. 5) attached to the roof frame 6 is used.
What is shown by the dotted chain line is when the wing is fully opened, and what is shown by the broken line is when the wing is fully closed. Further, FIG. 6 shows a case where the wings are fully opened. A spring roller 42 is rotatably fitted to the shaft attached to the shaft. One end of the tension spring 44 has a hook shape, and the hook portion engages with a groove formed on the outer circumference of the roller (see FIG. 6). A spring bracket 43 is attached to the rear underframe 4b, and an adjusting bolt 45 is attached to the spring bracket with a nut 46. One end of the adjusting bolt has an annular shape, and the other end of the tension spring 44 is engaged with this portion.
The spring force of the tension spring is transmitted to the roof frame via the arm bracket.

FIG. 8 is an assembly view showing a handle operating portion of a wing opening / closing device for a truck bed. In the figure, the handle operating portion is the operating rod 11 and the operating handle 1.
2. The lock device 13 is included. The upper end of the operating rod 11 is pivotally attached to the substantially central portion of the arm B of the front support portion 9 (the position thereof is shown by the intersection of the center lines in FIG. 2) via a pin.

FIG. 9 is a front view showing an example of the lock device 13, FIG. 10 is a view seen from the arrow A of FIG. 9, FIG. 11 is a view looking at the BB plane of FIG. 9 in the arrow direction, and FIG. Is a view showing a lock release lever, and FIGS. 13 to 17 are views showing details of respective parts thereof. 9 to 17, the front base frame 4a has a base plate 5 for mounting the operation handle 12.
0 is provided, and this base plate has a shaft 50a.
And a half ring 50b are attached. This axis 5
A lever assembly 51 is rotatably fitted to 0a.
The lever assembly 51 includes a lever A51a and a lever B51b.
And a cylindrical portion connecting them. Lever A is shaft 50a
Of the arm B of the front support portion 9 at one end.
The other end of the operating rod 11 pivotally attached to 23 is pivotally attached via a pin. A pipe-shaped operation rod 9 is fixed to the other end of the lever A.

The lever B51b is composed of two plates, and a shaft 53 is attached to the end thereof. Shaft 53 is a lever set
It is fixed to the operating handle 9 via the stand 51.
It Two lock levers 52 each having a claw at one end are rotatably fitted to a shaft 53 near one end thereof, and one end of a link 56 is pivotally attached to the other end through a pin. There is. The other ends of the two links 56 are pivotally connected to each other via a pin. A tension spring 55 is mounted between the other ends of the two lock levers 52. Further, L-shaped stoppers 54 are attached to the outer sides of the two levers B, respectively. One end of a clevis 57 is attached to the pin at the mutual pivoting portion of the two links 56,
One end of a wire 58 is attached to the other end of the clevis. The wire 58 is guided to a lever bracket 61 of an operation handle, which will be described later, via a roller 59.

The claws at one end of the two lock levers 52 are in contact with the inner surface of the half ring 50b, but the lock levers are opened in a V shape around the shaft 53, and the action of the tension spring 55 causes the lock levers to open. It is biased to reduce the angle. Therefore, the claw of the lock lever always acts so as to bite into the inner surface of the half ring, the pivoting action of the lever assembly 51 around the shaft 50a is locked, and the opening / closing movement of the wings is also locked. As will be described later, if the wire 58 is pulled rightward in FIG. 9 by the action of the lock release lever, the action of the link 56 causes the lock lever 5 to move.
The crossing angle of 2 becomes large, and the lock of the rotating action of the lever assembly 51 is also released. If the wire is pulled too far to the right, the crossing angles of the two links 56 will be opposite and the action of the tension spring will be nullified, so that the action of the stopper 54 prevents this.

11 As described above, the operating rod has a pipe shape,
A lever 60 having a shape in which the pipe is vertically divided into four is attached near the center thereof. That is, a bracket 61 is attached to the outside of the operation handle, and one end of a lever bracket 62 is pivotally attached to this bracket via a pin. The other end of the lever bracket extends through the operation handle on the opposite side, and the lever 60 is fixed near the other end. The other end of the wire 58 is fixed to the other end.

Since the tension spring 55 always pulls the wire 58 leftward in FIG. 9 via the link 56 and the clevis 57, the other end of the lever bracket is pulled downward in FIG. 12 by its action. The lever 60 is always in the position shown by the chain double-dashed line in FIG. 12, and the opening and closing of the wings are locked by the action of the pawl of the lock lever 52. When opening and closing the wings, the lever 60 and the operation handle 9 are grasped together, and the lever 60 is brought to the position shown by the solid line in FIG.
The lock between the claw and the half ring is released through the clevis 57, the link 58, and the lock lever 52 to perform the operation.

FIG. 18 is a front view showing another example of the lock device 13, and FIG. 19 is a side view thereof. 18 and 19
In the above, a base plate 70 for mounting the operation handle 12 is provided on the front underframe 4a, and a shaft 70a is mounted on this base plate. Two ratchets 71a and 71b are fixed to the shaft 70a by a key 75. The teeth of the two ratchets are opposite to each other. Also, this ratchet is 71a, 71b
Are stored in a case 76. A lever plate 83 is attached to the case 76 with bolts, and a bearing is provided at a portion where the shaft 70a penetrates the case and the lever plate. Three spacers 72 are inserted between the two ratchets and between the ratchet and the bearing. The tip of the shaft 70a has a washer 73 and a snap ring 74.
It is stopped by the bearing part. 12 An operation handle 84 is attached to the upper portion of the lever plate 83, and the other end of the operation rod 11 whose one end is pivotally attached to the arm B23 of the front support portion 9 is pivotally attached to the lower portion thereof via a pin. is doing. Therefore, if the operation handle 84 is operated, the operation handle 84, the lever plate 83,
The case 76 and the like all rotate around the shaft 70a, and the movement thereof is transmitted to the wing 8 via the operation rod 11 and the front support portion 9, and the wing is opened and closed.

Two brackets 77 are provided in the upper part of the case 76, and a shaft 80 is attached to each bracket. This shaft is inserted into a hole provided at the other end of a ratchet pawl 78 having a pawl at one end, and fixed with a set screw 80a. One end of an arm 81 is also fixed to the shaft 80. One end of each of the two links 82 is connected to each arm 81.
Of the link 82 are pivotally attached to each other via a pin, and the other ends of the links 82 are pivotally attached to each other via a pin. A spring 80b is mounted between the ratchet pawl 78 and the case 76 so as to press the pawl against the ratchet teeth.

The operation handle 84 has a pipe shape, and a push rod 85 is inserted therein.
A push button 86 is attached to the upper end of the push rod, and a compression spring 87 that biases the push button upward is mounted between the lower surface of the push button and the operation handle. Pin 8 near the lower end of the push rod
No. 8 is attached, and this pin extends through the outer wall of the operation handle to the inside of the case 76 and comes into contact with the upper surfaces of the pivotally connected portions at the other ends of the links 82.

In this example of the lock device, the operation handle is locked because the claw portions of the two ratchet claws are always engaged with the two ratchets, and therefore the wing 8 is used.
Is locked in its current open and closed position. To open and close the wings, push the push button 86 down. Then pin 88
The pivoting portion at the other end of the link 82 is pushed down via the lever 13, the ratchet pawl is opened, the lock is released because the engagement between the pawl and the ratchet is released, and the wing 8 is opened and closed by moving the operation handle. be able to. Even if the wings lose their balance due to the influence of gusts during opening / closing operations, the push-button is stopped and the locking device operates immediately, and the opening / closing operation of the wings can be locked at that point. it can. The stopper 79 shown in the figure has a role of preventing the link 82 from being opened too much by the pressing force of the pin 88.

An example of the lock device is shown in FIG. 9 or FIG.
A method of using a mechanical brake used in a crane or the like as shown in the above or another mechanical brake can be considered. As is well known, the mechanical brake has a property that the output shaft thereof does not rotate beyond the rotation of the input shaft in one direction, so that the mechanical brake is provided between the operating handle and the operating rod. By installing the brake, it is possible to prevent the wing 8 from falling, and at the same time to prevent the wing from being inoperable even when a gust of wind or the like is not transmitted to the operation handle directly.

FIG. 20 is a graph showing the balance of moments at each opening of the wing when the wing opening / closing device of the truck bed according to the present invention is used. As can be seen from the figure, in the case of this example, 2/3 of the total load moment of the wing is borne by the spring force of the compression spring, and 1/3 thereof is borne by the tension spring. The moment balance is such that at a wing opening of 0, the wing wins (closes freely), and at an opening of 90 (fully opened), the spring moment wins (opens). It is desirable that the moments of are the same (open and close easily). In the case of this example, fine adjustment can be performed by appropriately adjusting the compression spring, the tension spring, the adjust rod, and the three positions. Experience has shown that adjustment is easiest when the moment share of the compression and tension springs is 2: 1 as shown in FIG.

According to the present invention, when a wing of a truck bed is opened and closed, its moment is borne by a compression spring and a tension spring, and a locking device is placed on its operating portion, which has the following excellent effects. It plays. A large opening can be secured in the cargo box of the truck. Opening and closing will not malfunction due to obstacles. Can be easily opened and closed manually. Operation can be performed reliably and safely even in windy conditions. When the wing is fully closed, it can be closed, and when fully opened, it can be opened.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an entire wing opening / closing device for a truck bed according to the present invention.

FIG. 2 is a front view showing details of a front support portion of a wing opening / closing device of a truck bed.

FIG. 3 is a side view thereof.

FIG. 4 is a view of the AA cross section of FIG. 3 viewed in the direction of the arrow.

FIG. 5 is a front view showing details of a rear support portion of a wing opening / closing device of a truck carrier.

6 is a view of the AA plane in FIG. 5 viewed in the direction of the arrow.

FIG. 7 is a view of the plane BB in FIG. 5 as seen in the direction of the arrow and a side view of the spring bracket 15.

FIG. 8 is an assembly view showing a handle operating portion of the wing opening / closing device of the truck bed.

9 is a front view showing an example of a lock device 13. FIG.

10 is a view seen from an arrow A in FIG.

11 is a view of the plane BB of FIG. 9 viewed in the direction of the arrow.

FIG. 12 is a view showing a lock release lever.

13 is a diagram viewed from an arrow A in FIG.

FIG. 14 is a front view showing details of a release lever mounting portion.

FIG. 15 is a plan view thereof.

FIG. 16 is a detailed view of a bracket.

FIG. 17 is a detailed view of a lever bracket.

FIG. 18 is a front view showing another example of the locking device.

FIG. 19 is a side view thereof.

FIG. 20 is a graph showing a balance situation of moments at each opening of a wing when the wing opening / closing device for a truck bed according to the present invention is used. 16

FIG. 21 is a view showing a luggage box having a wing type structure.

FIG. 22 is a view showing a state in which the wings are fully opened.

[Explanation of symbols]

1 Truck 2 Packing Box 3 Packing Box 4a Front Underframe 4b Rear Underframe 5 Main Beam 5a Rotating Axis 5b Supporting Axis
6 Roof frame 7 Outer skin 8 Wing 9 Front support part 10
Rear support portion 11 Operation rod 12 Lock device 20 Bracket body 21 Link 22 Adjust rod 23 Arm B 24 Arm A 25 Plate 26 Compression spring 27 Spring seat 28 Spring shaft 29 Nut 3
0 case 41 arm bracket 42 spring roller 4
3 Spring bracket 44 Tension spring 45 Adjust bolt 46
Nut 50 Base plate 50a Shaft 50b Half ring 51 Lever assembly 51a Lever A 51b
Lever B 52 Lock lever 53 Shaft 54 Stopper 55 Tension spring 56 Link 57 Clevis 58 Wire
59 roller 60 lever 61 bracket 62 lever bracket 70 base plate 70a shaft 71a ratchet 71b ratchet 72 spacer 73 washer 74 snap ring 75 key 76 case 77 bracket
78 Ratchet claw 79 Stopper 80 Shaft 81 Arm 8
2 Link 83 Lever plate 84 Operation handle 85
Push rod 86 Push button 87 Spring 88 pin

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B60J ⁷ /08-7/12

Claims (3)

(57) 1 [Claims] 1. A wing opening / closing device for a truck carrier, which is provided on an upper portion of the truck carrier to rotate a wing forming an outer side of the luggage box to release a side surface and facilitate loading and unloading of luggage, in a front part of an upper portion of the truck carrier. A compression spring elastically mounted between the vehicle body and the spring seat, a spring shaft having one end attached to the spring seat, and three pivot points, and pivotally attached to the vehicle body at the first pivot point. And has a link pivotally attached to the other end of the spring shaft at a second pivot point and four pivot points, and is pivotally attached to the vehicle body at the first pivot point and the second pivot point. At the point of attachment, one end of the arm A is pivotally attached to the other end of the arm A pivotally attached to the wing, and one end and the other end thereof are pivotally attached to the third pivotal attachment points of the link and the arm B, respectively. Adjustable rod with adjustable length and the rear of the truck bed Tension spring elastically mounted between the vehicle body and the wing, an operating rod whose one end is pivotally attached to the fourth point of the arm B, and one end is pivotally attached to the other end of the operating rod. A wing opening / closing device for a truck bed, comprising: an operation handle pivotally attached to the vehicle body near the portion and the other end serving as a grip, and a lock device attached to the operation handle. Wherein said locking device is mounted to the vehicle body, sliding a half ring that is part of a shape of a cylinder, a shaft that is fixed relative to the operating handle, the inner surface of the half-ring at one end It has a pawl which, before near one end is fixed against the operating handle
And two locking levers that are pivotally connected to each other serial axis, one end is pivotally attached to the other end of each of said locking levers, and two links which other end is pivotally attached to each other, the two A tension spring elastically mounted between the lock levers, a lever bracket whose one end is pivotally attached near the grip of the operating handle, and a lock release lever attached to the other end of the lever bracket. , the truck bed wing switchgear according to claim 1, characterized in that made of a wire which connects the other end of the two links that are pivotally attached to each other and the other end of said lever bracket, . 3. The lock device has two ratchets fixed to a vehicle body and a claw that meshes with the ratchet at one end, and the other end is pivotally attached to a member that rotates together with the operation handle. Two ratchet pawls, one end of which is pivoted near the pawl of each ratchet pawl, and the other end of which is pivotally connected to each other 2
A link of a book, a push rod inserted through the operation handle made of a pipe material, a push button attached to the tip of the push rod, and a push rod mounted between the push button and the operation handle. A compression spring, a pin attached to the lower part of the push rod so as to abut the upper part of the other end of the link of the two links, and a spring for urging the ratchet pawl in the direction of pressing the ratchet. 2. The wing opening / closing device for a truck bed according to claim 1, wherein