JPH0528722U - Door opening and closing device for lorries - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a door for a freight vehicle that has excellent operability, allows easy loading and unloading of luggage, and can be opened and closed in both directions, and has excellent safety. [Configuration] Operation rods 22 and 22 on the left and right sides of the door 20, respectively
Vertically installed. Cam latch capable of pivotally supporting the door 20 on the platform 11.
29 is provided. An engaging portion 26 and an engaging portion 28 that engage with the cam latch 29 are provided on the inner wall of the door 20 and the operating rod 22, and one of the operating rods 22, 22 is rotated to rotate the one cam latch 29 and the engaging portion. The door 20 can be opened left and right by releasing the engagement with 28.
Further, there is provided a rotation restricting mechanism 33 that restricts the simultaneous rotation of the pair of operation rods 22 and 22 and restricts the rotation of the operation rod 22 on the pivot side when the door 20 is opened. Then, the rotation restricting mechanism 33 restricts the simultaneous rotation of the left and right operation rods 22, 22.
When the door 20 is opened, the rotation of the operation rod 22 on the pivot side is restricted, the locking portion 28 on the pivot side does not come off from the cam latch 29, and the door 20 can be safely opened.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a door opening / closing device provided on a luggage carrier of a truck.

[0002]

[Prior Art]

 In the conventional device of this type, for example, as shown in FIG. 7, a rear gannon door section 2 for loading and unloading luggage is formed on the rear surface of a cargo bed 1 of a freight vehicle, and a door 3 for opening and closing the rear gannon door section 2 is A support member 5 is provided on a support frame 4 standing upright on both sides of the rear gannon door 2, and a pivoting portion 5A provided on the support member 5 is rotated through a connecting member 3A provided on one side of the door 3. It is known that a gannon type is attached so that the door 3 can be opened and closed in one direction and fully opened to 270 degrees, that is, parallel to the side wall of the bed 1.

[0003]

[Problems to be solved by the device]

 In the conventional kannon type door 3 described above, doors 3 are provided on the left and right sides of the rear kannon door section 2 of the luggage carrier 1, and the left and right doors 3 are opened left and right to open the rear kannon door section 2. There may be inconvenience in opening and closing work of 3 and putting in and out of luggage. For example, if the left side of a lorry parked beside a building has a narrow space on the left side, the opening of the left door 3 is limited to 90 degrees, and the door 3 located at 90 degrees in the rear gannon door 2 prevents the loading and unloading of luggage. There will be restrictions such as In such a case, if the door 3 can be opened and closed on the left side as well, the door 3 can be opened and closed in an appropriate direction according to the conditions of unloading, and the unloading can be performed efficiently. However, in order to allow the door 3 to open both sides, for example, when the door 3 is opened and closed to the right, the door 3 must be pivotally supported on the luggage carrier 1 by the connecting member 3A and the pivotally connecting portion 5A. On the contrary, when the door 3 is opened and closed to the left, the pivotal connection must be released. That is, the left and right connecting members 3A and the pivotally attached portions 5A of the door 3 must be pivotally attached and released by the handles provided on the left and right sides of the door 3, respectively. When operated at the same time, the connecting member 3A and the pivoting portion 5A are simultaneously disengaged from each other and the door 3 is dropped from the rear gannon door portion 2, or when the door 3 is opened or closed, the connecting member 3A and the pivoting portion on the pivoting side are opened. There is a risk that the door 3 will fall off when it is detached from 5A.

Therefore, an object of the present invention is to provide a door opening / closing device for a freight vehicle, which is excellent in operability, allows easy loading / unloading of luggage, can be opened / closed in both directions, and is excellent in safety.

[0005]

[Means for Solving the Problems]

 According to the present invention, a pair of operation rods are vertically installed on the left and right sides of a door provided in a rear gannon of a luggage carrier, and a supporting member capable of pivotally supporting the door is provided in correspondence with the operation rod. Part of the door, and the support member is provided with an engaging portion provided on the door and an engaging portion provided on the operating rod so as to face the engaging portion so that the left and right sides of the door are respectively attached to the loading platform. The door is pivotally supported and one of the pair of operating rods is rotated to release the engagement of the locking portion from the support member so that the door can be opened and closed in both left and right directions. A rotation restricting mechanism that restricts the simultaneous rotation of the operation rods and restricts the rotation of the operation rod on the pivot side when the door is opened is connected to both the operation rods.

[0006]

[Action]

 With the above structure, when the left and right operation rods are simultaneously rotated, the rotation restriction mechanism restricts the simultaneous rotation of both operation rods, and the left and right locking parts do not come off from the support member at the same time. It is stably held in the door, and when the door is opened, the rotation restricting mechanism restricts the rotation of the operation rod on the pivot side, and the locking part on the pivot side does not disengage from the support member. It can be opened.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 5 show a first embodiment of the present invention, in which 11 is a luggage carrier provided at the rear part of a freight vehicle 12, from left and right side walls 13, 14, floor 15, ceiling 16, front wall. Then, these are attached and fixed to the support frames 17 provided at the respective corners to form a box shape, and the rear surface is opened to form the rear gannon door section 18. 20 and 20A are a pair of sliding door type doors that open and close the rear part of the double door 18, and in this example, the left side door 20 is provided so that it can be opened and closed in both directions, that is, the right side door 20A has its right side loaded. The door 20 is pivotally attached to the 11 side so as to be openable and closable in the right direction. The left and right doors 20 are pivotally attached to the platform 11 on the left and right sides and are openable and closable on both the left and right sides. The door 20 on the left side thereof has window holes formed on the lower left and right sides thereof. Mounting seat plates 21, 21 having a substantially U-shaped cross section are attached to the window holes, and upper and lower side plates of these mounting seat plates 21, 21 are inserted. Then, operation rods 22, 22 are vertically installed on the back side of the door 20, and one end of a handle 23, which is an operation portion, is fixed to the operation rod 22 at the insertion position. When the other end of the handle 23 is pulled, the operation is performed. The rod 22 is adapted to rotate. The upper and lower ends of the operating rod 22 are inserted through the through holes 25 formed in the fixed cam 24, and a hook-shaped engaging portion 26 is formed at the tip of the fixed cam 24. The small diameter portion 22A formed on the rotary cam 27 is fixed to the rotary cam 27, and a locking portion 28 is formed at the tip of the rotary cam 27. The fixing cam 24 has the through hole 25 side fixed to the inner wall of the door 20, and the hook-shaped engaging portion 26 on the tip end side can be engaged with the support shaft 30 of the cam latch 29 as a support member. The cam latch 29 is fixed by sandwiching the support shaft 30 and the fixed plate 32 between the upper and lower plates 31 and 31A, and the fixed plate 33 is attached to the upper and lower support frames 17 located on the rear surface side of the door 30. It is fixed. The door 20 is pivotally supported in a state in which the support shaft 30 of the cam latch 29 is engaged with the engagement portion 26 of the fixed cam 24 and the engagement portion 28 of the rotating cam 27. A pair of rotation restricting mechanisms 33 are provided vertically above and below the left and right operation rods 22, 22. The rotation restricting mechanism 33 includes a pair of left and right arms 34, 34A and a restricting member 35. A through hole 36 is formed on one side of each of the left and right arms 34, 34A, and a pin 37 having the through hole 36 and a spring washer inserted therein is screwed to the rotating cam 27 and formed on the pin 37. The two arms 34, 34A are rotatably attached to the rotary cam 27 in a state in which they are prevented from coming off by the flange portion 37A formed therein, and elongated holes 38 are formed in the other side of both arms 34, 34A. ing. The engaging portion 28 and the engaging portion 26 are formed so as to engage with the support shaft 30 before the door 20 is closed and the handle 23 is pulled. The restriction member 35 is provided in the door 20 at an intermediate position between the left and right operation rods 22, 22, and a base plate 39 that is long to the left and right of the restriction member 35 is fixed to an inner wall of the door 20. A through hole 40 is bored in the through hole 40, and a rotary shaft 41 is rotatably inserted into the through hole 40 via upper and lower washers. As shown in FIG. 2, transmission pieces 42, 42A are mounted on the upper and lower sides of the rotary shaft 41 in a substantially C-shape in plan view. The transmission pieces 42, 42A are provided at the tip end side thereof with the arms 34, 34A. Pins 44, 44 having flanges 44A, 44A through which the elongated holes 38, 38 formed on the end side and the spring washer are inserted are screwed. Further, springs 46, 46 are provided between the tips of the pins 44, 44 and the mounting portions 45, 45 projectingly provided on the other side of the base plate 39, respectively, for attracting the two. That is, in the state shown in FIG. 2, the spring 46 on the transmission piece 42 side urges the rotation shaft 41 to rotate in the counterclockwise direction, and the spring 46 on the transmission piece 42A side rotates the rotation shaft 41 in the clockwise direction. It is urged to rotate to. Projecting pieces 47, 47 are provided on the base plate 39 side of the both arms 34, 34A, and the projecting pieces 47, 47 abut against the protruding pieces 47, 47 when one of the handles 23 is operated. Abutment pieces 48, 48 for restricting the rotation area of the rotating shaft 41 are provided.

Next, the operation of the rotation restricting mechanism having the above structure will be described. In a state in which the handle 20 is operated to open and close the door 20, as shown in FIG. 4, the rotation cam 27 rotates to rotate the transmission piece 42A via the left arm 34A. The other transmission piece 42 also rotates in the same direction. In this case, the transmission piece 42 rotates clockwise against the bias of the spring 46, and when the spring 46 passes the rotation shaft 41, the spring 46 biases the transmission piece 42 to rotate in the opposite direction. To do. That is, the rotation of the transmission piece 42 causes the pin 37 of the transmission piece 42 to move to the other side of the straight line connecting the center of the rotating shaft 41 and the mounting portion 45, and the transmission piece 42 is biased in the clockwise direction. By the movement of the arm 34 accompanying the rotation of the rotating cam 27, the projection piece 47 abuts against the abutment piece 48, thereby fixing the rotation of the transmission piece 42 in the clockwise direction and restricting the rotation of the transmission piece 42 in both directions. As a result, when the door 20 is opened, the other handle 23 is in a locked state, that is, the rotating cam 27 does not come off the support shaft 30, and the door 20 can be stably opened and closed. Further, if the handles 23, 23 on both sides are operated at the same time, both operation rods 22, 22 try to rotate, but this rotation is restricted by the rotation cams 27, 27 and the arms 34, 34A. 2, the transmission piece 42 transmits a counterclockwise force to the rotating shaft 41, and the transmission piece 42A transmits a clockwise force to the rotating shaft 41. The rotation of 22 and 22 is also restricted so that both rotation cams 27 and 27 are not disengaged from the support shafts 30 and 30. Even if both handles 23 are operated or mistakenly touched at the same time, the door 20 is fixed and the rear view It is held by the door 18.

As described above, in the present embodiment, the pair of operation rods 22 are vertically provided on both left and right sides of the door 20 provided in the rear part of the gantry door 18 of the luggage carrier 11, and the cam rack serving as a support member capable of pivotally supporting the door 20 is provided. A grip 29 is provided on the side of the rear double-door 18 of the platform 11 corresponding to the operation rod 22, and the engagement portion 26 provided on the door 20 of the cam latch 29 and the operation rod 22 facing the engagement portion 26. The left and right sides of the door 20 are pivotally supported on the loading platform 11 by engaging with the provided locking portions 28, and one of the pair of operation rods 22, 22 is rotated to engage from the cam latch 29 as a supporting member. The door 20 is provided so as to be openable and closable in the left and right directions by releasing the engagement of the stopper 28, the simultaneous rotation of the pair of operation rods 22, 22 is restricted, and the operation rod on the pivot side is opened when the door 20 is opened. A rotation restricting mechanism 33 for restricting the rotation of 22 is provided by connecting both operation rods 22, and the left and right operation rods 22, 22 are simultaneously rotated. If this is attempted, the rotation restricting mechanism 33 restricts the simultaneous rotation of both operating rods 22, 22, so that the left and right locking portions 28, 28 do not come off the cam latch 29 at the same time, and the door 20 is stabilized at the rear double-sided door 18. When the door 20 is opened, the rotation control mechanism 33 restricts the rotation of the operation rod 22 on the pivot side, and the locking portion 28 on the pivot side does not come off from the cam latch 29. 20 can be released safely. Further, as an effect of the embodiment, the rotation of the rotation cams 27, 27 is transmitted to the transmission pieces 42, 42A through the left and right arms 34, 34A in a plane substantially C shape provided on the rotation shaft 41. Therefore, if both rotary cams 27, 27 are attempted to be rotated by operating the handles 23, 23 at the same time, a force in the reverse rotation direction acts on both transmission pieces 42, 42A, whereby the door 20 is closed, Even if the other handle 23 is accidentally operated or touched at the same time as the handle 23 on the side to be opened, the two locking parts 28, 28 do not disengage from the support shafts 30, 30, and the door 20 is securely attached to the rear part. The door 18 is held in a fixed state. Further, when the door 20 is opened to the left, for example, a force in the clockwise direction acts on the rotating shaft 41 via the transmission piece 42 by the spring 46, and the protrusion 47 of the left arm 34 on the pivot side is fixed. The clockwise rotation of the transmission piece 42 is restricted by hitting the abutment piece 48 of the base plate 39, and the rotation of the transmission piece 42 in both directions is restricted by these, and the other handle 23 is locked when the door 20 is opened. It can be stably opened and closed.

Further, in the door 20 of the present invention, the engaging portion 26 and the engaging portion 28 are engaged with the support shaft 30 before the operation rod 22 is rotated, and the left and right of the door 20 are pivotally attached to the luggage carrier 11. The door 20 is fixed by rotating the operating rod 22 on the right side with the handle 23 from this fixed state, and the locking portion 28 provided on the operating rod 22 is disengaged from the support shaft 30 to move the door 20 to the left side. The door 20 can be opened and closed, and the door 20 can be opened and closed to the right by rotating the left operating rod 22 from the fixed state, and the door 20 can be opened and closed in both directions. It is excellent, and when the space on the left side of the loading platform 11 is narrow, the door 20 can be opened to the right side by 270 degrees and the loading and unloading can be carried out well.

FIG. 6 shows a second embodiment of the present invention. In this example, the right door 20A is also provided so that it can be opened left and right, and thus the rear double door 18 can be opened both left and right. , 20A further improves the workability of opening the rear part of the double door 18 and makes it easy to load and unload luggage.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope of the present invention. For example, the rotation restricting mechanism is necessarily provided at two positions, one above the other. It is not necessary to use either one. Further, the cam ratch as a supporting member may be provided only at two places on the left and right, and may not necessarily be provided at four places on the left, right, top and bottom, and in the embodiment, an example in which the rear double door is opened and closed by two left and right doors. Although shown, the rear double-door door may be opened and closed by a single double-opening door having substantially the same width as the rear double-door door. Further, a rear double-sided door section may be provided on the side wall of the luggage carrier, and a double door 20 may be provided on the rear double-sided door section.

[0013]

[Effect of the device]

 According to the present invention, a pair of operation rods are vertically provided on both left and right sides of a door provided in a rear gannon of a cargo bed, and a supporting member capable of pivotally supporting the door is provided on the rear gannon of the cargo bed in correspondence with the operation rod. On the side of the door, the support member is engaged with an engaging portion provided on the door and an engaging portion provided on the operation rod facing the engaging portion, and the left and right sides of the door are respectively attached to the load. The door is pivotally supported on a table, and one of the pair of operation rods is rotated to release the engagement of the locking portion from the support member so that the door can be opened and closed in both left and right directions. A rotation restricting mechanism that restricts the simultaneous rotation of the rods and restricts the rotation of the operation rod on the pivot side when the door is opened is provided by being connected to both operation rods. It is excellent in safety and easy to put in and take out luggage, and it can be opened and closed in both directions for excellent safety. It is possible to provide a door opening and closing device in a lorry.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing a first embodiment of the present invention.

FIG. 2 is a plan view of an operation rod and a rotation restricting mechanism showing the first embodiment of the present invention.

FIG. 3 is a vertical sectional view of an operation rod and a rotation restricting mechanism showing a first embodiment of the present invention.

FIG. 4 is a plan view for explaining the operation of the rotation restricting mechanism showing the first embodiment of the present invention.

FIG. 5 is a perspective view of an essential part showing a first embodiment of the present invention.

FIG. 6 is a perspective view of an essential part showing a second embodiment of the present invention.

FIG. 7 is a sectional view of a main part showing a conventional example.

[Explanation of symbols]

 11 Luggage platform 18 Rear double door 20, 20A door 22 Operation rod 26 Engagement part 28 Engagement part 29 Cam latch (supporting member)

Claims (1)

[Scope of utility model registration request] 1. A pair of operation rods are vertically provided on both left and right sides of a door provided in a rear gannon of a cargo bed, and a support member capable of pivotally supporting the door is provided in correspondence with the operation rod. The door is provided on the side of the door, and the support member is engaged with an engaging portion provided on the door and an engaging portion provided on the operating rod so as to face the engaging portion, and the left and right sides of the door are respectively attached to the cargo bed. Pivotally supported on one side, pivoting one of the pair of operating rods to release the engagement of the locking portion from the supporting member to open and close the door in both left and right directions, and the pair of operating rods. A door for a freight vehicle, which is provided with a rotation restricting mechanism for restricting simultaneous rotation of the operation rods and for restricting rotation of the operation rod on the pivot side when the door is opened. Switchgear.