JPH04135818U - Door hinge structure for freight vehicles - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the external shape of a cargo box and improve fuel efficiency by improving aerodynamic characteristics during driving. [Structure] First profile 1 forming the hinge member 11
2, the second shape member 13 and the intermediate shape member 14 form the outer shape of one corner portion 19 of the packing box 1. Further, when the opening/closing door 2 is closed, the first section 1
2 and the intermediate section 14 is the positioning round bar 21 and the first
The sealing is achieved by the close contact of the sealing protrusion 30, and the sealing between the second profile 13 and the intermediate profile 14 is achieved by the close contact of the inner regulating surface 32 and the second sealing protrusion 33. was formed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is a cargo truck that rotatably supports a door that closes the opening of a cargo box for a truck. This relates to the door hinge structure of a goods vehicle.

0002

[Conventional technology]

Conventionally, cargo vehicles such as van-type trucks have doors that open and close at the rear of the cargo compartment. In the case of lattice doors, a double-door type is often used in consideration of operability and other factors. Various hinge structures have been proposed to rotatably support the opening/closing door. Ru.

0003 Figure 4 shows the load on a truck using a conventionally known hinge structure. This shows the external structure of the main part of the room. In the figure, it is mounted on the chassis (not shown) of the truck to form a luggage compartment. The rear opening of the cargo box 1 can be viewed toward the front, that is, to the outside, through a pair of left and right opening/closing doors 2. It is configured to open up the sound. In addition, in Figure 4, of the pair of left and right opening/closing doors, , only the left opening/closing door 2 is shown, but the right opening/closing door is also approximately symmetrical with the left opening/closing door 2. is formed.

0004 Further, each opening/closing door 2 is located on the left side of a frame 3 that defines the rear opening of the cargo box 1. They are rotatably attached to both right sides via hinge members 5, and the It is normally closed and locked by a locking mechanism 6.

[0005] FIG. 5 is a schematic enlarged sectional view of the main part along the line D-D in FIG. This shows the structure of the parts. In FIG. 5, the hinge members 5 are rotatably connected to each other via a support shaft 6. The first hinge piece 7 is the first hinge piece 7 and the second hinge piece 8 is the first hinge piece 7. The second hinge piece 8 is fixed to the opening/closing door 2. . Then, the second hinge piece 8 rotates together with the opening/closing door 2 using the support shaft 6 as a fulcrum. From the closed position shown by the solid line in Fig. 5, where the opening/closing door 2 closes the opening, Rotate approximately 270 degrees to the closed position, that is, until it is placed along the outside surface of the cargo box 1. be done. This hinge member 5 is attached to the cargo box 1 and the opening/closing door 2 from the outside. are provided in contact with each other and protrude from the loading box 1 and opening/closing door 2 sides. .

[0006]

[Problem that the idea aims to solve]

However, in the conventional door hinge structure for freight vehicles mentioned above, the hinge The hinge member 5 is brought into contact with the cargo box 1 and the opening/closing door 2 from the outside and is in a protruding state. Because of this, there were problems such as an unsightly appearance. In addition, the hinge member Since the peripheral part of the rotation fulcrum (spindle 6) of No. 5 will be in a state where it is largely protruded outward, Issues such as turbulence of airflow during driving, increasing resistance and worsening fuel efficiency. was there.

[0007] Therefore, in order to solve this problem, a structure as schematically shown in FIGS. 6 and 7 was proposed. Some use a hinge structure for opening and closing doors. That is, the hinge structure shown in FIG. 6 hides the hinge member 105 inside the cargo box 1. When the opening/closing door 2 is closed, this hinge member 105 is It is in a state where it does not protrude to the side. Therefore, in this structure, the hinge Since the member 105 is normally not visible from the outside, it looks good, and the hinge shown in FIG. Since it does not have a large outward protruding part like the engine structure, there is no airflow when driving. Flow is also improved and air characteristics can be improved. However, the opening/closing door 2 In the closed state (the state shown by the solid line in FIG. 6), the hinge member 105 is Since it protrudes inward, there are problems such as it gets in the way and limits the amount of cargo that can be loaded.

[0008] On the other hand, the hinge structure shown in FIG. When the opening/closing door 2 is closed, a corner portion thereof is also provided. It is rounded and does not protrude outward. Therefore, this structure Therefore, it is easy to improve the external appearance and the aerodynamic characteristics during driving. however With this structure, the seal structure is complicated, making waterproofing difficult and expensive. There was a problem.

[0009] This invention was made in view of the above problems, and its purpose is to improve the appearance of the packaging box. In addition to improving the shape of the vehicle, it also improves aerodynamic characteristics during driving to improve fuel efficiency. An object of the present invention is to provide a door hinge structure for a freight vehicle that can be used in a truck.

0010

[Means to solve the problem]

In order to achieve the above object, the door hinge structure for freight vehicles according to the present invention is It is made up of a rotatably supported door that can open and close the opening, and has a door on one end. a first profile member having a first joint part and whose other end side is fixed to the packing box; It has a second joint portion in which a regulating surface is provided in a part, and the other end side is connected to the opening/closing door. A second section to be fixed, and a section adjacent to the other end of the first section above and below the packing box. a positioning member fixedly provided on the cargo box side in a state of being extended in the direction; a third joint portion hinged to the first joint portion on one side, and a third joint portion on the other end side; a fourth coupling portion hingedly connected to the second coupling portion; A first sealing protrusion is provided at the joint portion corresponding to the positioning member, and the An intermediate portion in which a second sealing protrusion is provided on the fourth engaging portion in correspondence with the inner regulating surface. a profile, each profile having an outer shape of at least one corner of the packing box. , and when the door is closed, the first profile and the middle The positioning member and the first sealing protrusion are in close contact with each other to form a seal between the intermediate section and the the inner regulating surface and the second seal between the second section and the intermediate section. The structure is such that sealing is achieved by close contact of the protrusions for the lever.

[0011]

[Effect]

According to this configuration, the first engaging portion and the third engaging portion are provided between the cargo box and the opening/closing door. two hinges, a hinge connection and a hinge connection between the second engagement part and the fourth engagement part; Since it has a connecting portion, the shape of the hinge member can be formed relatively freely. The first section, the second section, and the intermediate section forming the hinge member , since the outer shape of one corner of the shipping box is formed, external hinges cannot be attached. Although it is a hinge, it can be shaped so that at first glance there is no hinge member on the outside. Wear. In addition, it is easy to create a hinge shape by narrowing down the rear part of the cargo box. Air flow can be further improved. Furthermore, when the door is closed, the space between the first profile and the intermediate profile is used for positioning. The member is sealed by close contact between the first sealing protrusion, and the second profile and the inner A space between the intermediate member and the intermediate member is sealed by close contact between the inner regulating surface and the second sealing protrusion; This itself has sealing properties, so a seal rubber is installed separately between the door and the cargo box. It also makes waterproofing easier. In addition, contact between the first seal protrusion and the positioning member, and the second seal The contact between the protrusions and the inner regulating surface allows for reliable positioning between each section. In addition to shape preservation, the packing box and opening/closing door are also shaped, improving the overall appearance of the packing box. can be improved.

0012

【Example】

Embodiments of the present invention will be described in detail below with reference to the drawings. Figure 1 shows the main parts of a truck box to which the door hinge structure of the present invention is applied. Therefore, it shows a portion corresponding to FIG. 5. Also, in Figure 1, Figure 4 and Figure The same reference numerals as 5 indicate the same parts as in FIGS. 4 and 5.

[0013] In FIG. 1, the opening/closing door 2 is attached to the cargo box 1 via a hinge member 11. It is currently installed. The hinge member 11 includes a first section 12 and a first section made of aluminum. It is composed of two sections 13, an intermediate section 14, and the like. In addition, Figure 2 shows this hinge. FIG. 2 is a partially exploded perspective view of the main part of the member 11. FIG. So, next, this hinge The structure of the member 11 will be further explained with reference to FIGS. 1 and 2.

[0014] First, the first profile 12 has a first engaging portion 15 on one end, and a bolt on the other end. 16, and is fixed to the frame 3 of the cargo box 1 via nuts 17. Also, the first bond The portion 15 is provided with a hole 18 (see FIG. 2) that passes through the top and bottom, and a frame. In order to insert the round steel 21 as a positioning member into one side of the body 3 over approximately the upper and lower ends. A notch 20 is provided. Next, the second profile 13 has a second engaging portion 22 on one end side and a bolt on the other end side. 23 and is fixed to the opening/closing door 2 via a nut 24. In addition, in FIG. 1, the reference numeral 25 The member shown with is a bolt hidden molding. Further, the second coupling portion 22 has a vertically penetrating portion. A hole 26 (see FIG. 2) is provided therethrough, and the hole 26 is connected to the intermediate section 14. A notch 27 (see FIG. 2) is provided corresponding to the portion. The intermediate section 14 has a first connecting portion 15 in the first section 12 on one end side and a hinge. It has a third joint part 28 that is jointed with the hinge, and a third joint part 28 that is jointed with the second shape member 13 on the other end side. A fourth coupling part 29 is provided which is hinged to the second coupling part 22 in the . Moreover, there is a gentle shape that bulges outward between the third joint part 28 and the fourth joint part 29. It is formed in a curved shape. Furthermore, the third coupling portion 28 has an upper and lower A penetrating hole 34 is provided, and it is in close contact with the positioning round bar 21. The contactable first sealing protrusions 30 and 31 are each displaced approximately 90 degrees from each other. It is located in the same position. On the other hand, the fourth coupling part 29 has a vertically penetrating A hole 35 is provided, and an inner regulating surface 32 in the second profile 13 is provided. A second sealing protrusion 33 is provided that can be brought into close contact with the second sealing protrusion 33 .

[0015] Next, a method of assembling this hinge member 11 will be explained. First, between the pair of upper and lower first sections 12, holes 18 and 34 are made to correspond to each other to form an intermediate shape. After the material 14 is placed, the support shaft 36 is commonly inserted into the hole 18 and the hole 34. next Then, the intermediate section 14 is placed in the notch 27 with the holes 26 and 35 corresponding to each other, and the The support shaft 37 is commonly inserted into the holes 26 and 35 from behind. Then, with this, the first between the section 12 and the intermediate section 14, and between the second section 13 and the intermediate section 14. However, the hinge member 11, which is hinged at the support shaft 36 and the support shaft 37, is completed. do. Then, in this state, the first profile 12 is fixed to the packing box 1, and the second profile 13 is fixed. When fixed to the opening/closing door 2, this hinge member 11 moves the corner portion 19 of the cargo box 1 outward. It expands gently into a continuous curve from the decorative frame 38 of the packing box 1 (see Figure 1). The opening/closing door 2 is provided over approximately the upper and lower ends of the opening/closing door 2. Note that the solid line in Figure 1 This state is shown below. Also, using this hinge member 11, the packing box 1 The opening/closing door 2 attached to the cargo box 1 is in the closed position shown by the solid line in Fig. approximately 270 degrees from the opening position to the open position shown by the dashed line in Figure 1, that is, the outer surface of the packing box 1. can be rotated until it is aligned with

[0016] FIG. 3 shows the operating state of the hinge member 11 when opening and closing the door 2. The operation of the hinge member 11 will be further explained with reference to FIG. 3. First, the state shown in FIG. 3(A) is a state in which the opening/closing door 2 is closed. this In this state, the first sealing protrusion 30 of the intermediate section 14 is tightly attached to the positioning round bar 21. At the same time that the intermediate member 14 supports the support shaft 36, the intermediate member 14 supports the support shaft 36. Rotation in the counterclockwise direction in the figure is restricted. Also, intermediate form The second sealing protrusion 33 of the member 14 and the inner regulating surface 32 of the second profile 13 are also mutually connected. Due to this contact, the position between each section 12, 13, 14 is In this state, both the sections 12, 13, and 14 are sealed. Next, when opening the door 2, pull the door 2 in the direction of the arrow E in Figure 3(A). and open it. Then, using the support shafts 36 and 37 as fulcrums, the intermediate section 14 and and the second section 13 rotate in the clockwise direction in the same figure, and as shown in FIG. 3(B). After passing through the state shown by the dashed-dot line, the state shown by the solid line in the figure is reached. In this state , the intermediate section 14 is in a state rotated by about 90 degrees with respect to the state shown in FIG. 3(A), The protrusion 31 of the intermediate section 14 comes into contact with the positioning round bar 21, and further rotation is prohibited. be controlled. Further, when the opening/closing door 2 is further opened, the second shape member is moved against the intermediate member 14. 13 is rotated approximately 90 degrees clockwise around the support shaft 37 as shown in FIG. 3(C). The sea urchin rotates. Then, as a result, the opening/closing door 2 becomes approximately smaller than the state shown in FIG. 3(A). This means that it has rotated approximately 270 degrees, and as shown by the dashed line in Figure 1, the outer surface of the packing box 1 It will be placed along the

[0017] Next, when closing door 2, rotate door 2 in the opposite direction from when opening. go. Then, the second section 13 and the intermediate section 14 move around the support shafts 36 and 37 as fulcrums. Both are rotated and closed, returning to the state shown in FIG. 3(A). Also, Figure 3(A) On the way back to This contact causes the intermediate section 14 to rotate counterclockwise. That will happen.

[0018] Therefore, according to this embodiment, there is a first connection between the cargo box 1 and the opening/closing door 2. A hinge connection between the portion 15 and the third connection portion 28, and a hinge connection between the second connection portion 22 and the fourth connection portion 28. Since the hinge member 11 has two hinge joint parts with the joint part 29, The shape of can be created relatively freely. This allows the code to look like the above structure. Gently cover the inner part 19 outward from the decorative frame 38 as if it were continuous. It can be made into a shape suitable for improving aerodynamic characteristics by bulging out, or it can be attached externally. Although it is a hinge, it is formed so that at first glance there is no hinge member on the outside. becomes possible. Furthermore, when the opening/closing door 2 is closed, the first section 12 and the intermediate section 14 are The space between the positioning steel material 21 (positioning member) and the first sealing protrusion 30 is in close contact with each other. In addition to being sealed by contact, the space between the second profile 13 and the intermediate profile 14 is inwardly restricted. Sealing is achieved by the close contact between the surface 32 and the second sealing protrusion 33, and this itself also seals the seal. Seal rubber 39 is separately provided between the opening/closing door 2 and the cargo box 1. Waterproofing (see Figure 1) can be done without any special structure, and the waterproofing structure is simple. Simply become. In addition, contact between the first sealing protrusion 30 and the positioning steel material 21, and The respective shapes 12, 13, 14 are brought into contact with the second sealing protrusion 33 and the inner regulating surface 32. Since positioning between the sections can be performed reliably, it is possible to maintain the shape between each section 12, 13, and 14. In addition, the shape of the cargo box 1 and opening/closing door 2 has been preserved, improving the overall appearance of the cargo box 1. can be done. In addition, when the opening/closing door 2 is closed like in the conventional structure (see Fig. 7), this hinge Shapes 12, 13, and 14 constituting the gear member 11 all protrude into the packing box 1. For example, there is no problem with the conventional structure shown in Figure 7. This eliminates the inconvenience that had been a problem and allows for efficient loading of luggage.

[0019] In the above embodiment, the support shafts 36 and 37 are assembled when the hinge member 11 is assembled. Although we have disclosed a structure that is fixed to a specific shape in advance, it is also possible to It is something that cannot be supported. In addition, the hinge when attaching the opening/closing door 2 to the cargo box 1 The number of members 11 is arbitrarily set depending on the weight, shape, etc. of the opening/closing door 2.

[0020]

[Effect of the idea]

As explained above, according to the door hinge structure for freight vehicles according to the present invention, the cargo Between the box and the opening/closing door, there is a hinge connection between a first engagement part and a third engagement part, and a second engagement part. Since it has two hinge joint parts, that is, the hinge joint between the engaging part and the fourth engaging part, The shape of the hinge member can be formed relatively freely, and the shape of the hinge member can be formed relatively freely. The outer shape of one corner of the packing box is determined by the first section, the second section, and the intermediate section. Although it is an external hinge, there is no external hinge. This means that it is possible to create a shape that does not require a hinge member. This allows the load It is possible to improve the outside value of the entire box. In addition, the rear part of the cargo box is narrowed down to provide a hint. It is also easy to create a shape that improves air flow and improves aerodynamic characteristics. becomes possible. Furthermore, when the opening/closing door is closed, the position between the first section and the intermediate section is determined. A seal is achieved by the close contact between the sealing member and the first sealing protrusion, and the second profile member and the intermediate section are sealed by close contact between the inner regulating surface and the second sealing protrusion. This seal itself has sealing properties, so it is recommended to install a separate seal between the door and the cargo box. Waterproofing with rubber also becomes easier. This simplifies the overall structure of the packing box. Therefore, the cost can be reduced and the product can be provided at a low price. In addition, contact between the first seal protrusion and the positioning member, and the second seal The contact between the protrusions and the inner regulating surface allows for reliable positioning between each section. In addition to shape preservation, the packing box and opening/closing door are also shaped, improving the overall appearance of the packing box. We can expect effects such as improved performance.

[Brief explanation of drawings]

FIG. 1 is a schematic cross-sectional view showing the main parts of a cargo box for a truck to which a door hinge structure according to the present invention is applied.

FIG. 2 is an exploded perspective view of essential parts of the door hinge structure shown in FIG. 1;

FIG. 3 is an operational state diagram of the door hinge structure shown in FIGS. 1 and 2;

FIG. 4 is an external view of essential parts showing an example of a cargo compartment in a truck to which a conventionally known door hinge structure is applied.

FIG. 5 is a schematic enlarged sectional view of a main part taken along line DD in FIG. 4;

FIG. 6 is a schematic cross-sectional view showing another example of a conventional door hinge structure.

FIG. 7 is a schematic cross-sectional view showing still another example of a conventional door hinge structure.

[Explanation of symbols]

1...packing box 2...Opening/closing door 11...Hinge member 12...first profile 13...Second profile 14...Intermediate profile 15...First joint part 19...Corner part 21... Positioning round steel (positioning member) 22...Second joint part 28...Third joint part 29...Fourth joint part 30...First sealing protrusion 32...Inner regulation surface 33...Second seal protrusion

Claims (1)

[Scope of utility model registration request] Claims: 1. A door hinge structure for a freight vehicle, which rotatably supports a door of a loading box; and the shape of
a second shape member having a second joint portion partially provided with an inner regulating surface on one end side and whose other end side is fixed to the opening/closing door; and adjacent to the other end side of the first shape member. a positioning member fixedly provided on the cargo box side in a state extending in the vertical direction of the cargo box; and a third coupling portion hinged to the first coupling portion on one end side. and a fourth coupling part hinged to the second coupling part on the other end side, and a first sealing protrusion corresponding to the positioning member on the third engagement part. and an intermediate shape member having a second sealing protrusion provided on the fourth engaging portion corresponding to the inner regulating surface, and each of the shape members is provided with a second sealing protrusion corresponding to the inner regulating surface, and each of the shape members is provided with a second sealing protrusion corresponding to the inner regulating surface. forming an outer shape, and sealing between the first profile member and the intermediate profile member by close contact between the positioning member and the first sealing protrusion when the door is closed. A door hinge for a truck, characterized in that the space between the second profile and the intermediate profile is sealed by close contact between the inner regulating surface and the second sealing protrusion. structure.