JP2014020428A - Hollow panel member and hollow panel - Google Patents

Abstract

Provided is a hollow panel member that can easily reduce the amount of material used in a fitting portion as compared with the prior art, can reduce the stroke when simultaneously fitting a plurality of panels, and has a simple fitting method.
A hollow panel member (1) has a fitting portion (5) provided at at least one of both ends in the width direction of a pair of front and back main panel portions (2) and (3) arranged substantially in parallel. The fitting parts 4 and 5 have shapes that can be fitted with each other in the same shape, and in the cross-sectional shape, the first leg parts 41 and 51 and the first leg parts 41 and 51 that extend inward in the thickness direction of the member. The second leg portions 42 and 52 extending in the same direction and substantially parallel to the first leg portions 41 and 51 by shifting the position to the outside in the surface direction of the member. Of the pair of fitting parts to be connected, the tip part of the first leg part 41 in one fitting part 4, the tip part of the second leg part 52 in the other fitting part 5, and the one fitting part 4 The distal end portion of the second leg portion 42 and the distal end portion of the first leg portion 51 in the other fitting portion 5 are configured to be engageable with each other.
[Selection] Figure 1

Description

  The present invention relates to a hollow panel member and a hollow panel.

  Conventionally, in various fields, a hollow panel member made of metal (including an alloy) or the like and a wide hollow panel formed by connecting a plurality of such members are used. For example, in order to reduce the weight of the vehicle, the back and side door panels, tilters, partition plates or ceiling walls provided on the platform of vehicles such as trucks are connected with a plurality of hollow panel members made of aluminum alloy. Panel is being used. Specifically, the following hollow panel members are known as hollow panel members that are units constituting this type of hollow panel.

  For example, Patent Document 1 discloses a hollow panel member having a front and back integrated main panel portion disposed substantially in parallel, a convex end portion disposed at one end of the main panel portion, and a concave end portion disposed at the other end. Is disclosed. The hollow panel members are connected to each other by fitting the convex end portion and the concave end portion to each other in the surface direction of the member. As described above, most of the conventional fitting structures and fitting methods are such that the hollow panel member is moved and fitted so as to approach the surface direction of the member. In addition, the following fitting structures and fitting methods have been proposed.

  For example, Patent Document 2 discloses a hollow panel member having a fitting portion provided on one side wall and a fitted portion provided on the other side wall. In this hollow panel member, the fitting portion has a first slide plate and a second slide plate that protrude substantially vertically from one side wall. The fitted portion has a first guide plate and a second guide plate that protrude substantially perpendicularly from the other side wall. The hollow panel members are generally connected to each other by bringing the tip of each slide plate into contact with the surface of each guide plate in a state where the slide plate is inclined with respect to the surface of the guide plate. And the step of rotating the slide plates by the amount of the inclination angle so as to overlap the guide plates.

  Patent Document 3 discloses a locking plate and a support plate extending to the front end side on both side walls of the panel connection end, and a connection plate that connects the base end side of the locking plate and the base end side of the support plate. A hollow panel member is disclosed. In this hollow panel member, the locking plate has a locking piece formed on the inner surface on the tip side. The support plate has a locking groove formed on the outer surface on the base end side. The connection between the hollow panel members is roughly arranged such that the positions of the hollow panel members are shifted from each other in the direction intersecting the connection direction, and the arranged hollow panel members are brought closer to the surface direction of the members. It is performed through a step of moving, and a step of moving the approached hollow panel members so as to approach each other in the thickness direction of the members, and locking the locking pieces in the locking grooves.

Japanese Patent No. 3757230 Patent No. 4330969 JP 2007-302013 A

  However, the structure in which the convex end portion and the concave end portion are fitted to each other needs to form the convex end portion and the concave end portion having different shapes. In addition, in the fitting structure, the length of the convex end portion needs to be relatively long in order to ensure the rigidity of the fitting portion. Therefore, the fitting structure tends to increase the cross-sectional area of the fitting portion and use more material. Further, in order to obtain a hollow panel by simultaneously connecting a plurality of hollow panel members with a fitting device, the fitting device requires a stroke corresponding to the size of the fitting portion multiplied by the number of panels. . It is advantageous in manufacturing the hollow panel that the number of strokes is as small as possible.

  In addition, the other fitting structure may include a plurality of hollow panel members as long as they do not involve rotation in addition to movement in the surface direction of the member or perform two-stage movement such as movement in the surface direction and thickness direction of the member. Cannot be fitted. Furthermore, a joining member such as a pin is also required separately. Therefore, these fitting structures have a problem that the fitting method is complicated.

  The present invention has been made in view of the above background, and can easily reduce the amount of material used in the fitting portion compared to the prior art, and can reduce the stroke when simultaneously fitting a plurality of panels. Is a simple hollow panel member and a hollow panel member using the same.

One aspect of the present invention is a hollow panel member for constituting a wide hollow panel by connecting a plurality of pieces via a fitting portion, and a pair of front and back main panel portions arranged substantially in parallel, The main panel portion has the fitting portion provided on at least one of both ends in the width direction of the member,
The fitting portion has a shape that can be fitted with each other in the same shape, and in the cross-sectional shape thereof, the first leg portion extending inward in the thickness direction of the member, and the surface of the member more than the first leg portion Having a second leg extending in the same direction as the first leg in parallel with the first leg by shifting the position outward in the direction;
Of the pair of fitting portions to be connected, the tip end portion of the first leg portion in one fitting portion and the tip portion of the second leg portion in the other fitting portion have a shape that can be locked together. The tip of the second leg in one fitting part and the tip of the first leg in the other fitting part are formed in a shape that can be locked with each other. It is in the hollow panel member characterized by (Claim 1).

  Another aspect of the present invention resides in a hollow panel having a plurality of the hollow panel members and connected by fitting the fitting portions of adjacent hollow panel members to each other. (Claim 11).

  As described above, the hollow panel member is provided with a fitting portion on at least one of both ends in the width direction of the member in the main panel portion, and the fitting portions of the adjacent hollow panel members are fitted to each other. To form a unit that forms a wide hollow panel.

  And the said hollow panel member has the fitting part of a specific structure as mentioned above. Therefore, when a plurality of hollow panel members are connected via a fitting portion to form a wide hollow panel, the pair of fitting portions to be connected are connected to each other in the thickness direction of the member. It is possible to fit by making the leg side surfaces of the part and the second leg part face each other and relatively moving. In a state in which the pair of fitting portions to be connected is fitted, the distal end portion of the first leg portion in one fitting portion and the distal end portion of the second leg portion in the other fitting portion are locked to each other. . Moreover, the front-end | tip part of the 2nd leg part in one fitting part and the front-end | tip part of the 1st leg part in the other fitting part are mutually latched.

  Thus, even if a pair of fitting part which should be connected has the same shape, the said hollow panel member can be fitted by the parallel movement of only the thickness direction of a member. Therefore, the hollow panel member is easier to reduce the cross-sectional area of the fitting portion than the conventional hollow panel member for fitting the irregularly shaped convex end portion and concave end portion, and the amount of material used in the fitting portion is reduced. Easy to reduce. In addition, since the hollow panel member can be fitted to a plurality of panels at the same time if the stroke is about the thickness of the member, the stroke when simultaneously fitting a plurality of hollow panel members can be reduced. Is possible. Moreover, since the said hollow panel member does not need to fit hollow panel members by combining several movement like the past, the fitting method is also simple.

  The hollow panel includes a plurality of hollow panel members each having a fitting portion having the specific structure, and is connected by fitting fitting portions between adjacent hollow panel members. Therefore, the hollow panel can easily reduce the amount of material used in the fitting portion, can reduce the stroke when simultaneously fitting a plurality of hollow panel members, and the fitting method is also simple.

3 is a perspective view of a hollow panel member in Example 1. FIG. It is sectional drawing which shows the structure of the fitting part formed in one of the both ends of the width direction of the member in the main panel part of a hollow panel member in Example 1. FIG. It is sectional drawing which shows the structure of the fitting part formed in the other of the both ends of the width direction of the member in the main panel part of a hollow panel member in Example 1. FIG. (A) is explanatory drawing which shows the state before fitting a pair of fitting part which should be connected in Example 1, (b) fits a pair of fitting part which should be connected in Example 1. It is explanatory drawing which shows the combined state. FIG. 6 is a perspective view of a hollow panel member in Example 2. (A) is explanatory drawing which shows the state before fitting a pair of fitting part which should be connected in Example 3, (b) fits a pair of fitting part which should be connected in Example 3. It is explanatory drawing which shows the combined state. (A) is explanatory drawing which shows the state before fitting a pair of fitting parts which should be connected in Example 4, (b) fits a pair of fitting parts which should be connected in Example 4. It is explanatory drawing which shows the combined state. (A) is explanatory drawing which shows the state before fitting a pair of fitting parts which should be connected in Example 5, (b) fits a pair of fitting parts which should be connected in Example 5. It is explanatory drawing which shows the combined state. (A) is explanatory drawing which shows the state before fitting a pair of fitting part which should be connected in Example 6, (b) fits a pair of fitting part which should be connected in Example 6. It is explanatory drawing which shows the combined state. In Example 6, it is explanatory drawing for demonstrating the case where bending is loaded to a pair of fitting part in the state which a pair of fitting part which should be connected fitted. (A) Explanatory drawing which shows the state before fitting a pair of fitting parts which should be connected in Example 7, (b) fits a pair of fitting parts which should be connected in Example 7. It is explanatory drawing which shows the combined state. In Example 7, it is explanatory drawing for demonstrating the case where bending is loaded to a pair of fitting part in the state which a pair of fitting part which should be connected fitted. (A) is explanatory drawing which shows the state before fitting a pair of fitting part which should be connected in Example 8, (b) fits a pair of fitting part which should be connected in Example 8. It is explanatory drawing which shows the combined state. In Example 8, it is explanatory drawing for demonstrating the case where bending is loaded to a pair of fitting part in the state which fitted a pair of fitting part which should be connected.

  The hollow panel member has a configuration in which one hollow panel member has fitting portions at both ends in the width direction of the member in the main panel portion, and the fitting portion only in one end portion in the width direction of the member in the main panel portion. However, the other end portion may have any configuration that does not have a fitting portion. The hollow panel member which has the former structure can be mainly used as a hollow panel member arrange | positioned in the middle of a wide hollow panel. The hollow panel member having the latter configuration can be used mainly as a hollow panel member disposed at an end portion of a wide hollow panel.

  The “cross-sectional shape of the fitting portion” means a cross-sectional shape when the fitting portion is cut along the width direction of the member (short direction of the member). In addition, the “pair of fitting portions to be connected” includes a fitting portion that one hollow panel member has when the hollow panel members are connected to each other, and a fitting portion that the other hollow panel member that becomes the connection partner has. Means a pair with each other.

  Further, when viewed in the width direction of the hollow panel member, the direction of the center line parallel to the thickness direction of the member is defined as the inward direction of the surface of the member, and the opposite side is defined as the outward direction of the surface of the member. Further, when viewed in the thickness direction of the hollow panel member, the direction of the center line parallel to the surface direction of the member is defined as the inner side in the thickness direction of the member, and the opposite direction side is defined as the outer side in the thickness direction of the member.

  The said hollow panel member can have a rib which connects these between a pair of main panel parts. Thereby, the flatness and surface pressure strength of the main panel portion can be increased, and the rigidity of the hollow panel member and the entire hollow panel can be increased. The said hollow panel member can be manufactured by extrusion molding using the aluminum alloy raw material for extrusion. The hollow panel member may be formed of other extrudable metal (including alloy) material, plastic material, or the like in addition to the aluminum alloy material. Moreover, the distance between the outer surfaces of a pair of main panel part, ie, the thickness of a member, can be about 15-40 mm, for example.

  In the hollow panel member, the fitting portions are provided at both ends in the width direction of the member in the main panel portion, and are formed in a shape that is symmetrical with respect to the center line parallel to the thickness direction of the member in the panel cross section. (Claim 2).

  In this case, the first leg portion and the second leg portion included in the fitting portion provided at one end portion in the width direction of the member in the main panel portion, and the fitting portion provided at the other end portion are provided. Both the first leg portion and the second leg portion having the same face in the same direction. Therefore, when a plurality of hollow panel members are connected, a pair of fitting portions to be connected can be fitted to each other by arranging the front and back surfaces of adjacent hollow panel members so as to be reversed.

  Further, in the hollow panel member, the fitting portions are provided at both ends in the width direction of the member in the main panel portion, and may be formed in a shape that is point-symmetric with respect to the center of the member in the panel cross section. (Claim 2).

  In this case, the first leg portion and the second leg portion included in the fitting portion provided at one end portion in the width direction of the member in the main panel portion, and the fitting portion provided at the other end portion are provided. The first leg portion and the second leg portion have the opposite directions. Therefore, when connecting a plurality of hollow panel members, a pair of fitting parts to be connected can be fitted to each other by disposing the front and back surfaces of adjacent hollow panel members in the same direction. Therefore, in this case, there is an advantage that the panel surface properties of the hollow panel can be easily made uniform. In this case, when connecting a plurality of hollow panel members, it is not necessary to invert the front and back surfaces of adjacent hollow panel members. Therefore, in this case, there is an advantage that the fitting workability is excellent, coupled with the fact that the fitting portions to be connected in the thickness direction of the members can be brought close to each other and fitted. The “panel cross section” mentioned above means a cross section when cut along the width direction of the member (short direction of the member).

  In the hollow panel member, the fitting portion includes an inclined connecting surface portion having an angle formed with a surface on the inner side in the surface direction of the member in the first leg portion, and each of the pair of main panel portions. There is an inclined connecting piece whose both ends are connected to the inner surface, and a first extension piece extending in the extending direction of the main panel portion from the end portion in the width direction of the member in the main panel portion arranged on the base side of the leg. The first leg portion extends from the inclined connection surface portion of the inclined connection piece, and the second leg portion extends from the first extension piece (claim 3).

  In this case, the rigidity of the fitting portion is improved by the inclined connecting piece. Further, among the pair of fitting parts to be connected, the second leg part of the other fitting part is arranged on the inner side in the surface direction of the member in the first leg part of one fitting part, and one fitting part It becomes easy to arrange | position the 1st leg part of the other fitting part to the surface direction inner side of the member in the 2nd leg part of a part. Therefore, in this case, the pair of fitting portions to be coupled are moved relative to each other with the surfaces on the inner side in the surface direction of the members of the first leg portion and the second leg portion facing each other in the thickness direction of the member. It becomes possible to fit. Therefore, in this case, it can contribute to the reliable fitting of a pair of fitting parts which should be connected.

  The angle formed between the inner surface in the surface direction of the member of the first leg and the inclined connecting surface portion of the inclined connecting piece is preferably about 20 ° to 70 °, more preferably about 25 ° to 65 °. More preferably, it should be set to about 30 ° to 60 °. This is because the angle within the above range is excellent in the balance between extrusion manufacturability and the effect of suppressing the increase in the cross-sectional area of the fitting portion. The angle formed above refers to an angle α shown in FIGS. 2 and 3 described later.

  In the hollow panel member, the first leg has a first protrusion formed from the surface inward of the surface of the member at the tip thereof toward the inward of the surface of the member, and the second leg is In addition, a configuration may be adopted in which a second protrusion is formed from the inner surface in the front end of the member toward the inner side in the surface of the member (claim 4).

  In this case, in a state in which the pair of fitting portions to be connected is fitted, the first protrusion of the first leg in one fitting portion and the second of the second leg in the other fitting portion. The protrusions are locked together. Moreover, the 2nd projection part of the 2nd leg part in one fitting part and the 1st projection part of the 1st leg part in the other fitting part are mutually latched. Therefore, in this case, it can contribute to a reliable fitting by the projection of each projection part.

  In the hollow panel member, the first protrusion may have an inclined front end surface that is inclined so that the thickness of the leg becomes smaller toward the leg front end side.

  In this case, when the pair of fitting portions to be coupled are fitted to each other, the second projection portion in the other fitting portion comes into contact with the inclined tip surface of the first projection portion in the one fitting portion, and the inclination The second protrusion is guided by the tip surface. And each protrusion part is latched by crossing. Moreover, the 2nd projection part in one fitting part contact | abuts to the inclination front end surface of the 1st projection part in the other fitting part, and a 2nd projection part is guided by the said inclination front end surface. And each protrusion part is latched by crossing. Therefore, in this case, a hollow panel member capable of smoothly performing a fitting operation in the thickness direction of the member is obtained.

  The angle formed between the inclined tip surface and the thickness direction of the member is preferably set to about 10 ° to 45 °, more preferably about 12 ° to 30 °, and still more preferably about 15 ° to 20 °. . This is because the range of the above-mentioned angle is excellent in the fitting workability in the thickness direction of the member and the balance of the locking effect by crossing. In addition, the angle | corner which said is formed points out the front-end | tip angle (beta) formed between an inclination front end surface and the thickness direction of a member, as shown in FIG.2 and FIG.3 mentioned later.

  In the hollow panel member, the distance between the first leg portion and the second leg portion in the fitting portion is preferably about 5 to 40 mm, more preferably about 10 to 15 mm. In this case, there is an advantage that when the bending is applied to the pair of fitting portions in a state where the pair of fitting portions to be connected is fitted, the fitting portion is more difficult to come off.

  In the hollow panel member, the length of the fitting portion is preferably about 10 to 50 mm, more preferably about 10 to 30 mm. In this case, there is an advantage that when the bending is applied to the pair of fitting portions in a state where the pair of fitting portions to be connected is fitted, the fitting portion is more difficult to come off. In addition, the length of the said fitting part is a member between the line by the fitting part which appears on one panel surface, and the line by the fitting part which appears on the other panel surface, when hollow panel members are connected. Means the distance in the surface direction.

  In the hollow panel member, the inclined connecting piece includes a first connecting surface portion extending substantially in parallel and in the same direction as the first leg portion from an end of the inclined connecting surface portion on the inner side in the surface direction of the member, and a member of the inclined connecting surface portion. It can be set as the structure which has the 2nd connection surface part extended in the opposite direction substantially parallel to a 1st leg part from the edge part of a surface direction outer side (Claim 6).

  In this case, it is not necessary to lengthen the length of the fitting portion having the inclined connecting piece excessively. Further, in this case, when the pair of fitting parts to be connected is fitted, the first leg part and the second leg part in one fitting part interfere with the inclined connecting piece in the other fitting part. It becomes difficult. In this case, the inclined connecting piece in one fitting portion and the first leg portion and the second leg portion in the other fitting portion are unlikely to interfere with each other.

  The said hollow panel member WHEREIN: Each front-end | tip part of a 1st connection surface part and a 2nd connection surface part can be set as the structure each couple | bonded with the inner surface of a pair of main panel part (Claim 7).

  In this case, both ends of the inclined connecting piece can be connected to the inner surfaces of the pair of main panel portions at the shortest distance by the first connecting surface portion and the second connecting surface portion. Therefore, in this case, it is easy to suppress the length of the fitting portion having the inclined connecting piece, and it is easy to contribute to the reduction of the material usage.

  In the hollow panel member, the inclined connecting piece has a stepped surface portion extending inward in the surface direction of the member from the surface inward of the member in the front end portion of the first connecting surface portion. It has the 2nd extension piece extended in the extension direction of the above-mentioned main panel part from a tip part, and the 2nd extension piece is directed in the thickness direction inward of the member from the surface in the thickness direction of the member in the tip part Out of the pair of fitting parts to be connected, the tip surface of the inward projection part in one fitting part and the outer surface of the stepped part in the other fitting part And the outer surface of the stepped surface portion in one fitting portion and the tip end surface of the inwardly protruding portion in the other fitting portion can be configured to be able to contact each other (Claim 8). .

  In this case, even when the pair of fitting portions is fitted with a pair of fitting portions to be coupled and bending is applied to the pair of fitting portions, the tip of the inward protruding portion in one fitting portion is The outer surface of the stepped surface portion in the other fitting portion is pressed down. Moreover, the outer surface of the stepped surface part in one fitting part is pressed down by the front-end | tip of the inward protrusion part in the other fitting part. Therefore, there is an advantage that the fitting portion is more difficult to come off and the abutting portion between the fitting portions is difficult to open by bending.

  In this case, the stepped surface portion has an outward projection formed from the outer surface thereof toward the outside in the thickness direction of the member, and the outer surface of one of the fitting portions of the pair of fitting portions to be connected. The front end surface of the direction protrusion and the inner surface of the second extension piece in the other fitting portion are configured to be able to contact each other, and the inner surface of the second extension piece in one fitting portion and the outer direction in the other fitting portion It can comprise so that it can contact | abut with the front end surface of a projection part.

  In this case, even when the bending is applied to the pair of fitting portions in a state in which the pair of fitting portions to be connected is fitted, the outward projecting portion in one fitting portion is the other It is restrained by the inner surface of the second extension piece in the fitting portion. Moreover, the inner surface of the second extension piece in one fitting part restrains the outward projection part in the other fitting part. Therefore, there is an advantage that the fitting portion is more difficult to come off and the abutting portion between the fitting portions is difficult to open by bending.

  In addition to the above, the second extension piece has an intermediate projection formed from the inner surface between the second leg and the inward projection to the inside in the thickness direction of the member. Among the pair of power fitting parts, the front end surface of the intermediate projecting part in one fitting part and the outer surface of the stepped surface part in the other fitting part can be contacted, and the stepped surface part in one fitting part It is also possible to configure such that the outer surface of the first protrusion and the front end surface of the intermediate projection portion in the other fitting portion can contact each other (claim 10).

  In this case, even when the bending is applied to the pair of fitting portions in a state in which the pair of fitting portions to be connected is fitted, the intermediate projection portion in one fitting portion is in the other It is restrained by the outer surface of the stepped surface portion in the fitting portion. Moreover, the outer surface of the stepped surface part in one fitting part restrains the intermediate | middle protrusion part in the other fitting part. Therefore, there is an advantage that the fitting portion is more difficult to come off and the abutting portion between the fitting portions is difficult to open by bending. In addition, the said intermediate | middle protrusion part contains not only the aspect arrange | positioned without contacting a 2nd leg part or an inward projection part, but the aspect arrange | positioned in contact with a 2nd leg part or an inward projection part. Moreover, the aspect arrange | positioned in the said contact also includes the aspect in which the intermediate | middle protrusion part is integrated with the 2nd leg part.

  The above-mentioned hollow panel member and the above-mentioned hollow panel are preferably used as a back panel or a side door panel provided on a vehicle loading platform such as a truck, a loading platform wall such as a tilt, a partition plate or a ceiling, a building material, a table top plate, etc. it can.

Hereinafter, the hollow panel member and hollow panel concerning an Example are demonstrated using drawing.
Example 1
1 to 4 show a hollow panel member of this example. The hollow panel member 1 of this example is a hollow panel member for constituting a wide hollow panel 6 by connecting a plurality of pieces through a fitting portion 4 (5). In this example, specifically, the hollow panel member 1 is for forming the hollow panel 6 of this example used as a loading platform wall of a vehicle. The hollow panel member 1 is manufactured by extruding an aluminum alloy material.

  The hollow panel member 1 includes a pair of front and back main panel portions 2 and 3 arranged substantially in parallel, and a fitting portion 4 (5) provided on at least one of both ends of the main panel portions 2 and 3 in the width direction of the member. And have. In this example, as shown in FIG. 1, fitting portions 4 and 5 are provided at both ends in the width direction of the members in the main panel portions 2 and 3. A rib 23 is provided between the main panel portions 2 and 3 to connect them.

  As shown in FIG. 4, the fitting portions 4 and 5 have shapes that can be fitted with each other in the same shape. As shown in FIGS. 2 and 3, the fitting portions 4 and 5 are, in the cross-sectional shape, the first leg portions 41 and 51 that extend inward in the thickness direction of the member, and members that are more members than the first leg portions 41 and 51. The second leg portions 42 and 52 extending in the same direction as the first leg portions 41 and 51 are disposed in parallel to the first leg portions 41 and 51 by shifting the position outward in the plane direction. A pair of fitting parts 4 and 5 to be connected (a pair of fitting parts to be connected may be a pair of fitting parts 4 and 4 and a pair of fitting parts 5 and 5, but in this example, Among the pair of fitting portions 4 and 5), the tip portion of the first leg portion 41 in one fitting portion 4 and the tip portion of the second leg portion 52 in the other fitting portion 5 are described. They are formed in shapes that can be locked together. Of the pair of fitting portions 4 and 5 to be coupled, the tip end portion of the second leg portion 42 in one fitting portion 4 and the tip end portion of the first leg portion 51 in the other fitting portion 5 are mutually connected. It is formed in a shape that can be locked. Hereinafter, the hollow panel member 1 of this example will be described in detail.

  The fitting portions 4 and 5 in the hollow panel member 1 of the present example are formed in a shape that is line symmetric about a center line ML that is parallel to the thickness direction of the member in the panel cross section.

  As shown in FIGS. 2 and 3, the fitting portions 4 and 5 have inclined connection pieces 43 and 53 and first extension pieces 44 and 54. The inclined connecting pieces 43 and 53 have an inclined connecting surface portion 431 having an angle α of less than 90 ° (specifically, 45 °) with the surface of the first leg portions 41 and 51 on the inner side in the surface direction of the member. 531, and both ends thereof are connected to the inner surfaces of the pair of main panel portions 2 and 3, respectively. Specifically, the inclined connecting pieces 43 and 53 are first connecting surface portions extending substantially in parallel and in the same direction as the first leg portions 41 and 51 from the end portions on the inner side in the surface direction of the members in the inclined connecting surface portions 431 and 531. 432, 532, and second connection surface portions 433, 533 extending in the opposite direction from the end portions of the inclined connection surface portions 431, 531 substantially parallel to the first leg portions 41, 51 from the end portions of the members in the surface direction. The leading end portions of the first connecting surface portions 432 and 532 and the second connecting surface portions 433 and 533 are respectively coupled to the inner surfaces of the pair of main panel portions 2 and 3.

  On the other hand, the first extension pieces 44 and 54 of the fitting portions 4 and 5 extend in the extending direction of the main panel portion 3 from the end portion in the width direction of the member in the main panel portion 3 disposed on the leg base end side. . The first leg portions 41 and 51 extend from the inclined connection surface portions 431 and 531 of the inclined connection pieces 43 and 53, and the second leg portions 42 and 52 extend from the first extension pieces 44 and 54. Note that the leg tip positions of the first leg portions 41 and 51 are arranged closer to the main panel portion 2 than the leg tip positions of the second leg portions 42 and 52.

  The first leg portions 41 and 51 have first projecting portions 411 and 511 that are formed from the surface inward of the member in the surface direction toward the inward of the member in the front end portion. The 2nd leg parts 42 and 52 have the 2nd projection parts 421 and 521 formed toward the surface direction inward of the member from the surface of the member in the surface direction in the tip part. In this example, in a state in which the pair of fitting portions 4 and 5 to be coupled are fitted, the first protrusion portions 411 and 511 and the second protrusion portions 421 and 521 are caught by overcoming each other's protrusion portions. A match is made. The first protrusions 411 and 511 have inclined tip surfaces 412 and 512 that are inclined so that the thickness of the legs becomes smaller toward the leg tip side. Specifically, an angle β (tip angle β) formed between the inclined front end surfaces 412 and 512 and the thickness direction of the member is set to 18 °.

  Further, the hollow panel member 1 of the present example protrudes in the extending direction of the main panel portion 2 at the end portion of the main panel portion 2 on the leg tip side (the side where the first extension pieces 44 and 54 are not formed). Parts 46 and 56. When the pair of fitting portions 4 and 5 to be connected are fitted to each other, the projecting portions 46 and 56 abut the end surface of the second leg portions 42 and 52 on the outer side in the surface direction of the member. This is for facilitating positioning during the fitting operation in the member thickness direction.

  In the hollow panel member 1 of this example, the thickness of each main panel portion 2 and 3 is 1.4 mm, the thickness of the first leg portions 41 and 51 and the second leg portions 42 and 52 is 1.4 mm, and the thickness of the member. Is 19 mm, the length of the fitting portions 4 and 5 is 10 mm, the surface of the first leg portions 41 and 51 of the fitting portions 4 and 5 on the outer side in the surface direction and the members of the second leg portions 42 and 52. The distance between the inner surface in the surface direction was 6 mm.

  It is possible to form the hollow panel 6 having a desired width dimension by connecting a plurality of the hollow panel members 1 having such a structure via the fitting portions 4 and 5. Hereinafter, the fitting operation when the plurality of hollow panel members 1 are connected via the fitting portion will be described.

  The hollow panel member 1 of this example is provided with fitting portions 4 and 5 at both ends of the main panel portions 2 and 3 in the width direction of the member. In the panel cross section, a center line ML parallel to the thickness direction of the member is provided. It is formed in a shape that is line symmetric with respect to the axis. Therefore, in this example, among the adjacent hollow panel members 1, the other hollow panel member 1 is arranged with the front and back reversed with respect to the one hollow panel member 1. At this time, the pair of fitting portions 4 and 5 to be connected are arranged so as to face each other. In addition, a pair of fitting parts 4 and 4 can also be fitted by the method of inversion of the said front and back, and a pair of fitting parts 5 and 5 can also be fitted.

  And as shown to Fig.4 (a), in the state which controlled the downward movement of one hollow panel member 1, the other so that a pair of fitting parts 4 and 5 which should be connected adjoin each other, for example The fitting part 5 of the hollow panel member 1 is pushed in the thickness direction of the member. Then, the first leg part 41 and the second leg part 42 in one fitting part 4 and the second leg part 52 and the first leg part 51 in the other fitting part 5 are mutually inward in the surface direction of the member. It moves in the thickness direction of the member while facing the side surfaces. At this time, in this example, the second projecting portions 521 and 421 of the second leg portions 52 and 42 are formed by the inclined front end surfaces 412 and 512 of the first projecting portions 411 and 511 in the first leg portions 41 and 51 of the other. Guided. And the 1st projection parts 411 and 511 and the 2nd projection parts 521 and 421 get over each other projection part, and are locked by crossing. In the case of this example, by providing the inclined front end surfaces 412, 512, the fitting operation in the thickness direction of the members can be performed smoothly. In this way, the first protrusion 411 of the first leg 41 in one fitting part 4 and the second protrusion 521 of the second leg 52 in the other fitting part 5 are securely locked together. The Further, the second protrusion 421 of the second leg 42 in the one fitting part 4 and the first protrusion 511 of the first leg 51 in the other fitting part 5 are securely locked to each other. The front end surface of the first leg portion 41 in one fitting portion 4 abuts on the inner surface of the first extension piece 54 in the other fitting portion 5, and the front end of the first leg portion 51 in the other fitting portion 5. When the surface comes into contact with the inner surface of the first extension piece 44 in one of the fitting portions 4, the hollow panel members 1 and 1 are fitted to the main panel portions 2 and 3 in a flat state without a step.

  Even if a pair of fitting parts 4 and 5 which should be connected have the same shape, the above-mentioned hollow panel member 1 can be fitted by parallel movement only in one direction in the thickness direction of the member. Therefore, the hollow panel member 1 is easy to reduce the cross-sectional area of the fitting portion compared with the conventional hollow panel member that fits the irregularly shaped convex end portion and the concave end portion, and the amount of material used in the fitting portion is reduced. Easy to reduce. Moreover, since the hollow panel member 1 can simultaneously fit a plurality of hollow panel members 1 if there is a stroke that is about the thickness of the member, the stroke at the time of simultaneously fitting a plurality of hollow panel members 1 is reduced. It can be reduced. Moreover, since the hollow panel member 1 does not need to fit the hollow panel members 1 by combining a plurality of movements as in the prior art, the fitting method is also simple. In addition, since the hollow panel member 1 has a shape in which the fitting portions 4 and 5 can be fitted with each other, the types of extrusion dies used when the hollow panel member 1 is manufactured can be reduced. Can also contribute. Further, the hollow panel member 1 does not require a joining member (fitting reinforcement member) such as a pin.

  The hollow panel 6 of this example includes a plurality of hollow panel members 1 having the fitting portions 4 and 5 having the specific structure, and the fitting portions 4 and 5 between the adjacent hollow panel members 1 are fitted. It is connected by. Further, the hollow panel 6 of this example has the fitting portion 4 (5) only at one end portion in the width direction of the member in the main panel portions 2 and 3 at both ends of the panel, but at the other end portion. The hollow panel member (not shown) of the structure which does not have the said fitting part 4 (5) is connected.

  Since the hollow panel 6 of this example uses the hollow panel member 1 of this example, it is easy to reduce the amount of material used in the fitting portion, and the stroke when simultaneously fitting a plurality of hollow panel members 1 is reduced. The fitting method is also simple.

(Example 2)
As shown in FIG. 5, the hollow panel member 1 and the hollow panel 6 of this example are formed so that the fitting portions 4 and 5 are point-symmetric with respect to the center of the member as a symmetry point MP in the panel cross section. This is different from the first embodiment. Other configurations are the same as those of the first embodiment.

  In this case, arrangement | positioning of the fitting parts 4 and 5 at the time of connecting the several hollow panel member 1 is the same as that of FIG. However, in this case, when taking the arrangement of FIG. 4, the front and back of the adjacent hollow panel members 1 can be arranged in the same direction, and the pair of fitting portions 4 and 5 to be connected can be fitted. . Therefore, in this case, there is an advantage that the panel surface property of the hollow panel 6 can be easily made uniform. In this case, when connecting a plurality of hollow panel members 1, it is not necessary to reverse the front and back of adjacent hollow panel members 1. Therefore, in this case, there is an advantage that the fitting workability is excellent because the fitting portions 4 and 5 to be connected in the thickness direction of the members can be fitted close to each other. Other functions and effects are the same as those of the first embodiment.

(Example 3)
As shown in FIG. 6, the hollow panel member 1 and the hollow panel 6 of the present example differ from the first example in that the length of the fitting portions 4 and 5 is 18 mm. Other configurations are the same as those of the first embodiment.

  Specifically, the lengths of the fitting portions 4 and 5 can be changed by increasing the length of the first extension pieces 44 and 54 or by connecting the inclined connecting pieces 43 and 53 with respect to the first embodiment. For example, the degree of inclination of the surface portions 431 and 531 can be changed, or the length of the portion outside the first leg portions 41 and 51 of the inclined connection surface portions 431 and 531 can be increased. The distance between the outer surface in the surface direction of the member in the first leg portions 41 and 51 of the fitting portions 4 and 5 and the inner surface in the surface direction of the member in the second leg portions 42 and 52 is 15 mm. It is. In addition, the angle α formed by the surfaces of the first leg portions 41 and 51 on the inner side in the surface direction of the members and the inclined connection surface portions 431 and 531 is 70 °.

  In this case, the distance between the first leg portions 41 and 51 and the second leg portions 42 and 52 in the fitting portions 4 and 5 is larger than that in the first embodiment. Compared to the first embodiment, the lengths of the fitting portions 4 and 5 are also longer. Therefore, in this case, when bending is applied to the pair of fitting parts 4 and 5 in a state in which the pair of fitting parts 4 and 5 to be connected are fitted, the advantage that the fitting part is more difficult to come off is obtained. There is. Other functions and effects are the same as those of the first embodiment.

Example 4
As shown in FIG. 7, the hollow panel member 1 and the hollow panel 6 of the present example are different from the hollow panel member 1 and the hollow panel 6 of Example 1 in that the inclined connection pieces 43 and 53 have the first connection surface portions 432 and 532. The step portions 434 and 534 extending inward in the surface direction of the member from the surface inward in the surface direction of the member at the front end portion of the member. Further, the first extension pieces 44, 54 have second extension pieces 45, 55 extending in the extension direction of the main panel portion 3 from the tip portions thereof. The second extension pieces 45 and 55 have inward projections 451 and 551 formed from the inner surface in the thickness direction of the member at the tip end portions thereof toward the inner side in the thickness direction of the member.

  And among the pair of fitting parts 4 and 5 to be connected, the front end surface of the inward projection 451 in one fitting part 4 and the outer surface of the stepped surface part 534 in the other fitting part 5 can come into contact with each other. It is configured. In addition, of the pair of fitting portions 4 and 5 to be connected, the outer surface of the stepped surface portion 434 in one fitting portion 4 and the front end surface of the inwardly protruding portion 551 in the other fitting portion 5 can come into contact with each other. It is configured.

  In this example, bent surface portions 435 and 535 that are bent outward in the thickness direction of the member are formed at end portions of the step surface portions 434 and 534 on the inner side in the surface direction of the member. And the front-end | tip part of this bending surface part 435,535 is couple | bonded with the inner surface of the main panel parts 2 and 2 together. Further, the lengths of the second extension pieces 45 and 55 are the inward projections 451 in the second extension pieces 45 and 55 when the pair of fitting parts 4 and 5 to be connected are fitted to each other. , 551 are set to such a length that the front end surfaces thereof are in contact with the outer surfaces of the respective bent surface portions 535 and 435. In addition, the length of the fitting parts 4 and 5 is 24 mm. Other configurations are the same as those of the first embodiment.

  In this case, even when bending is applied to the pair of fitting portions 4 and 5 in a state in which the pair of fitting portions 4 and 5 to be connected are fitted to each other, The tip of the inward projection 451 presses the outer surface of the stepped surface portion 534 in the other fitting portion 5. Further, the outer surface of the stepped surface portion 434 in the one fitting portion 4 is pressed by the tip of the inward protruding portion 551 in the other fitting portion 5. Therefore, there is an advantage that the fitting part is more difficult to come off and the abutting part between the fitting parts 4 and 5 is also difficult to open by bending. Other functions and effects are the same as those of the first embodiment.

(Example 5)
As shown in FIG. 8, the hollow panel member 1 and the hollow panel 6 of this example basically have the same configuration as the hollow panel member 1 and the hollow panel 6 of Example 4. However, in the hollow panel member 1 and the hollow panel 6 of this example, the stepped surface portions 434 and 534 have outward projecting portions 436 and 536 formed outward from the outer surface in the thickness direction of the member. , Different from Example 4. And the hollow panel member 1 and the hollow panel 6 of this example are a pair of fitting part 4,5 which should be connected, the front end surface of the outward protrusion part 436 in one fitting part 4, and the other fitting part. 5 is configured to be able to contact the inner surface of the second extension piece 55. Moreover, the hollow panel member 1 and the hollow panel 6 of the present example include the inner surface of the second extension piece 45 and the other fitting portion 5 in one fitting portion 4 of the pair of fitting portions 4 and 5 to be connected. It is comprised so that contact | abutting with the front end surface of the outward protrusion part 536 in FIG. In this example, outward projecting portions 436 and 536 are arranged on the outer surfaces of the step surface portions 434 and 534 in the extending direction of the first connecting surface portions 432 and 532. The outward projections 436 and 536 can also be disposed on the outer surfaces of the stepped surface portions 434 and 534 other than those described above. Other configurations are the same as those in the fourth embodiment.

  In this case, even when bending is applied to the pair of fitting portions 4 and 5 in a state in which the pair of fitting portions 4 and 5 to be connected are fitted to each other, The outward projecting portion 436 is restrained by the inner surface of the second extension piece 55 in the other fitting portion 5. Further, the inner surface of the second extension piece 45 in the one fitting portion 4 restrains the outward projection 536 in the other fitting portion 5. Therefore, there is an advantage that the fitting part is more difficult to come off and the abutting part between the fitting parts 4 and 5 is also difficult to open by bending. Other functions and effects are the same as those of the fourth embodiment.

(Example 6)
As shown in FIG. 9, the hollow panel member 1 and the hollow panel 6 of this example basically have the same configuration as the hollow panel member 1 and the hollow panel 6 of Example 4. However, in the hollow panel member 1 and the hollow panel 6 of the present example, the second extension pieces 45 and 55 are disposed in the thickness direction of the member from the inner surface between the second leg portions 42 and 52 and the inward projection portions 451 and 551. Example 4 is different from Example 4 in that it has intermediate protrusions 452 and 552 formed toward the opposite side. And the hollow panel member 1 and the hollow panel 6 of this example are a pair of fitting part 4,5 which should be connected, and the front end surface of the intermediate | middle protrusion part 452 in one fitting part 4, and the other fitting part 5 are connected. It is comprised so that the outer surface of the step surface part 534 in this can contact | abut. Further, the hollow panel member 1 and the hollow panel 6 of this example are configured such that the outer surface of the stepped surface portion 434 in one fitting portion 4 and the front end surface of the intermediate projection portion 552 in the other fitting portion 5 can contact each other. ing. Other configurations are the same as those in the fourth embodiment.

  In this case, even when bending is applied to the pair of fitting portions 4 and 5 in a state in which the pair of fitting portions 4 and 5 to be connected are fitted to each other, The inwardly protruding portion 451 and the intermediate protruding portion 452 are restrained by the outer surface of the step surface portion 534 in the other fitting portion 5. Further, the outer surface of the stepped surface portion 434 in the one fitting portion 4 restrains the inwardly protruding portion 551 and the intermediate protruding portion 552 in the other fitting portion 5. Therefore, there is an advantage that the fitting part is more difficult to come off and the abutting part between the fitting parts 4 and 5 is also difficult to open by bending. Other functions and effects are the same as those of the fourth embodiment.

  Here, as shown in FIG. 10, in this example, a case where bending is applied to the pair of fitting portions 4, 5 in a state where the pair of fitting portions 4, 5 to be connected is fitted to each other in detail. consider. In this case, when the bending M is applied to the pair of fitting portions 4 and 5, a drag force F acts from one hollow panel member 1 to the other panel member 1. Therefore, the bending force M ′ acts on the end portion of the fitting portion 5 in the other hollow panel member 1 due to the drag F. Therefore, a cross section A of the fitting portion 5 (in the drawing, in the fitting portion 5 of the other hollow panel member 1, the second extension corresponding to the extension line of the surface on the outer side in the surface direction of the member in the second leg portion 52. The maximum shearing force and the maximum bending stress are generated in the cross section of the base end of the piece 55. Note that F ′ is a reaction force against the drag force F, and the deformation of one hollow panel member 1 is constrained by this F ′. That is, the fitting part is more difficult to come off, and the abutting part between the fitting parts 4 and 5 is also difficult to open by bending. In FIG. 10, the bending M ′ increases as the inward protrusion 552 moves from the cross-section A outward in the surface direction of the other hollow panel member 1 (right side in the drawing). Therefore, it is desirable that the inward protruding portion 552 (452) be disposed as close as possible to the inside of the hollow panel member 1 in the surface direction of the member, that is, toward the second leg portion 52 (42).

(Example 7)
As shown in FIG. 11, the hollow panel member 1 and the hollow panel 6 of this example have basically the same configuration as the hollow panel member 1 and the hollow panel 6 of Example 6. However, when the hollow panel member 1 and the hollow panel 6 of this example are in a state in which the pair of fitting portions 4 and 5 to be connected are fitted to each other, the intermediate protrusions 452 and 552 are mutually connected. This is different from the sixth embodiment in that the first connecting surface portions 532 and 432 are arranged so as to overlap with the extending directions of the first connecting surface portions 532 and 432, respectively.

  In this case, as shown in FIG. 12, the reaction force F ′ acts so as to compress the first connecting surface portion 432 (532). Therefore, in this case, the step surface portions 434 and 534 are less likely to be deformed by the reaction force F ', compared to the sixth embodiment in which the reaction force F' acts to compress the step surface portions 434 and 534, which is advantageous. Also, it is advantageous because M 'is smaller than in the case of FIG.

(Example 8)
As shown in FIG. 13, the hollow panel member 1 and the hollow panel 6 of this example basically have the same configuration as the hollow panel member 1 and the hollow panel 6 of Example 6. However, in the hollow panel member 1 and the hollow panel 6 of this example, the intermediate protrusions 452 and 552 are disposed at the base ends of the second extension pieces 45 and 55, and the surface direction of the members at the second leg portions 42 and 52 It is integrated with the outer surface. And when it is set as the state which a pair of fitting parts 4 and 5 which should be connected are fitted, mutual intermediate projection parts 452 and 552 overlap with the extension direction of mutual 1st connection surface parts 532 and 432, respectively. It is formed in the size to be. These points are different from the sixth embodiment.

  In this case, as shown in FIG. 14, since the cross section A becomes large, it becomes strong against the bending M ′. That is, since the second extension piece 55 is more difficult to be deformed, there is an advantage that the fitting portion is less likely to come off, and the abutting portion between the fitting portions 4 and 5 is further hardly opened by bending.

  As mentioned above, although the Example of this invention was described in detail, this invention is not limited to the said Example, A various change is possible within the range which does not impair the meaning of this invention.

DESCRIPTION OF SYMBOLS 1 Hollow panel member 2, 3 Main panel part 23 Rib 4, 5 Fitting part 41, 51 First leg part 411,511 First projection part 412,512 Inclined front end surface 42,52 Second leg part 421,521 Second Protruding part 43, 53 Inclined connecting piece 431, 531 Inclined connecting surface part 432, 532 First connecting surface part 433, 533 Second connecting surface part 434, 534 Step surface part 435, 535 Bending surface part 436, 536 Outward projecting part
44, 54 First extension piece 45, 55 Second extension piece 451, 551 Inward projection 452, 552 Intermediate projection 46, 56 Projection 6 Hollow panel

One aspect of the present invention is a hollow panel member for constituting a wide hollow panel by connecting a plurality of pieces via a fitting portion, and a pair of front and back main panel portions arranged substantially in parallel, The main panel portion has the fitting portion provided on at least one of both ends in the width direction of the member,
The fitting section may have a shape to be fitted in between those of the same shape in its cross section, a first leg portion extending in the thickness direction inwardly of the member, the member than the first leg A second leg extending in the same direction as the first leg in parallel to the first leg by shifting the position outward in the surface direction, and a surface on the inner side in the surface direction of the member in the first leg And an inclined connecting piece that has an inclined connecting surface portion with an angle of less than 90 ° and is connected to each inner surface of the pair of main panel portions, and the main panel disposed on the leg base end side. A first extension piece extending in an extending direction of the main panel portion from an end of the member in the width direction of the member, and the first leg portion extends from the inclined connection surface portion of the inclined connection piece. The second leg extends from the first extension piece;
Of the pair of fitting portions to be connected, the tip end portion of the first leg portion in one fitting portion and the tip portion of the second leg portion in the other fitting portion have a shape that can be locked together. The tip of the second leg in one fitting part and the tip of the first leg in the other fitting part are formed in a shape that can be locked with each other. It is in the hollow panel member characterized by (Claim 1).

Another aspect of the present invention resides in a hollow panel having a plurality of the hollow panel members and connected by fitting the fitting portions of adjacent hollow panel members to each other. (Claim 10 ).

Thus, even if a pair of fitting part which should be connected has the same shape, the said hollow panel member can be fitted by the parallel movement of only the thickness direction of a member. Therefore, the hollow panel member is easier to reduce the cross-sectional area of the fitting portion than the conventional hollow panel member for fitting the irregularly shaped convex end portion and concave end portion, and the amount of material used in the fitting portion is reduced. Easy to reduce. In addition, since the hollow panel member can be fitted to a plurality of panels at the same time if the stroke is about the thickness of the member, the stroke when simultaneously fitting a plurality of hollow panel members can be reduced. Is possible. Moreover, since the said hollow panel member does not need to fit hollow panel members by combining several movement like the past, the fitting method is also simple.
Here, in the hollow panel member, the fitting portion includes an inclined connection surface portion having an angle of less than 90 ° with an inner surface in the surface direction of the member in the first leg portion, and the pair of main panels. And a first extension piece extending in the extension direction of the main panel portion from the end portion in the width direction of the member in the main panel portion arranged on the leg base end side. The first leg portion extends from the inclined connection surface portion of the inclined connection piece, and the second leg portion extends from the first extension piece.
Therefore, the rigidity of the fitting portion of the hollow panel member is improved by the inclined connecting piece. Further, among the pair of fitting parts to be connected, the second leg part of the other fitting part is arranged on the inner side in the surface direction of the member in the first leg part of one fitting part, and one fitting part It becomes easy to arrange | position the 1st leg part of the other fitting part to the surface direction inner side of the member in the 2nd leg part of a part. Therefore, the hollow panel member has a pair of fitting portions to be coupled with each other in the thickness direction of the member with the first leg portion and the second leg portion facing each other inward in the surface direction of the member. It becomes possible to fit by moving. Therefore, the said hollow panel member can contribute to the reliable fitting of a pair of fitting parts which should be connected.

In the hollow panel member, the angle formed between the inner surface of the first leg portion in the surface direction and the inclined connection surface portion of the inclined connection piece is preferably about 20 ° to 70 °, more preferably 25 ° to It is good to set to about 65 °, more preferably about 30 ° to 60 °. This is because the angle within the above range is excellent in the balance between extrusion manufacturability and the effect of suppressing the increase in the cross-sectional area of the fitting portion. The angle formed above refers to an angle α shown in FIGS. 2 and 3 described later.

In the hollow panel member, the first leg has a first protrusion formed from the surface inward of the surface of the member at the tip thereof toward the inward of the surface of the member, and the second leg is , it can be configured to have a second protruding portion formed toward the plane of the surface inward side of the member to the surface inwardly of the member at the distal end portion (claim 3).

In the hollow panel member, the first protrusion may be configured to have an inclined distal end surface which is inclined such that the thickness of the legs decreases toward the leg distal end (claim 4).

In the hollow panel member, the inclined connecting piece includes a first connecting surface portion extending substantially in parallel and in the same direction as the first leg portion from an end of the inclined connecting surface portion on the inner side in the surface direction of the member, and a member of the inclined connecting surface portion. It can be set as the structure which has the 2nd connection surface part extended in the opposite direction substantially parallel to a 1st leg part from the edge part of a surface direction outer side (Claim 5 ).

The said hollow panel member WHEREIN: Each front-end | tip part of a 1st connection surface part and a 2nd connection surface part can be set as the structure each couple | bonded with the inner surface of a pair of main panel part (Claim 6 ).

In the hollow panel member, the inclined connecting piece has a stepped surface portion extending inward in the surface direction of the member from the surface inward of the member in the front end portion of the first connecting surface portion. It has the 2nd extension piece extended in the extension direction of the above-mentioned main panel part from a tip part, and the 2nd extension piece is directed in the thickness direction inward of the member from the surface in the thickness direction of the member in the tip part Out of the pair of fitting parts to be connected, the tip surface of the inward projection part in one fitting part and the outer surface of the stepped part in the other fitting part And the outer surface of the stepped surface portion in one fitting portion and the tip end surface of the inward protruding portion in the other fitting portion can be configured to be able to contact each other (claim 7 ). .

In this case, the stepped surface portion has an outward projection formed from the outer surface thereof toward the outside in the thickness direction of the member, and the outer surface of one of the fitting portions of the pair of fitting portions to be connected. The front end surface of the direction protrusion and the inner surface of the second extension piece in the other fitting portion are configured to be able to contact each other, and the inner surface of the second extension piece in one fitting portion and the outer direction in the other fitting portion It can comprise so that it can contact | abut with the front end surface of a projection part (Claim 8 ).

In addition to the above, the second extension piece has an intermediate projection formed from the inner surface between the second leg and the inward projection to the inside in the thickness direction of the member. Among the pair of power fitting parts, the front end surface of the intermediate projecting part in one fitting part and the outer surface of the stepped surface part in the other fitting part can be contacted, and the stepped surface part in one fitting part It is also possible to configure such that the outer surface of the intermediate member can be brought into contact with the front end surface of the intermediate projection in the other fitting portion (claim 9 ).

Claims (11)

A hollow panel member for forming a wide hollow panel by connecting a plurality of pieces via a fitting portion, a pair of front and back main panel portions arranged substantially in parallel, and the width of the member in the main panel portion The fitting portion provided at at least one of both ends in the direction,
The fitting portion has a shape that can be fitted with each other in the same shape, and in the cross-sectional shape thereof, the first leg portion extending inward in the thickness direction of the member, and the surface of the member more than the first leg portion Having a second leg extending in the same direction as the first leg in parallel with the first leg by shifting the position outward in the direction;
Of the pair of fitting portions to be connected, the tip end portion of the first leg portion in one fitting portion and the tip portion of the second leg portion in the other fitting portion have a shape that can be locked together. The tip of the second leg in one fitting part and the tip of the first leg in the other fitting part are formed in a shape that can be locked with each other. A featured hollow panel member. In the hollow panel member according to claim 1,
The fitting portions are provided at both ends in the width direction of the member in the main panel portion, and are formed in a shape that is line-symmetric with respect to a center line parallel to the thickness direction of the member in the panel cross section. Alternatively, in the panel cross section, the hollow panel member is formed in a shape that is point-symmetric with respect to the center of the member. In the hollow panel member according to claim 1 or 2,
The fitting portion includes an inclined connection surface portion having an angle formed with a surface on the inner side in the surface direction of the member of the first leg portion that is less than 90 °, and both ends of each inner surface of the pair of main panel portions. Each of which has an inclined connecting piece and a first extension piece extending in the extending direction of the main panel portion from an end portion of the member in the width direction of the main panel portion disposed on the base end side of the leg. ,
The first leg portion extends from the inclined connecting surface portion of the inclined connecting piece,
The hollow panel member, wherein the second leg portion extends from the first extension piece. In the hollow panel member according to any one of claims 1 to 3,
The first leg has a first projection formed from the surface inward of the member in the front end thereof toward the inward of the member in the surface direction,
The said 2nd leg part has the 2nd projection part formed toward the surface direction inner side of the member from the surface of the surface direction inner side of the member in the front-end | tip part, The hollow panel member characterized by the above-mentioned. In the hollow panel member according to claim 4,
The said 1st projection part has the inclined front end surface inclined so that the thickness of a leg may become small as it goes to the leg front end side, The hollow panel member characterized by the above-mentioned. In the hollow panel member according to claim 3,
The inclined connecting piece includes a first connecting surface portion extending substantially in parallel and in the same direction as the first leg portion from an end portion on the inner side in the surface direction of the member in the inclined connecting surface portion, and a surface direction of the member in the inclined connecting surface portion. A hollow panel member having a second connecting surface portion extending from an end portion on the outer side substantially parallel to the first leg portion and in an opposite direction. In the hollow panel member according to claim 6,
The hollow panel member according to claim 1, wherein each of the first connection surface portion and the second connection surface portion has a distal end portion coupled to an inner surface of the pair of main panel portions. In the hollow panel member according to claim 6,
The inclined connecting piece has a stepped surface portion extending inward in the surface direction of the member from the surface inward of the surface direction of the member in the tip portion of the first connecting surface portion,
The first extension piece has a second extension piece extending in the extending direction of the main panel portion from the tip portion thereof,
The second extension piece has an inward projection formed from the surface in the thickness direction of the member at the tip thereof toward the inside in the thickness direction of the member,
Among the pair of fitting portions to be connected, the tip surface of the inward projection portion in one fitting portion and the outer surface of the stepped surface portion in the other fitting portion are configured to come into contact with each other. The hollow panel member is configured such that an outer surface of the stepped surface portion in one fitting portion and a front end surface of the inward protruding portion in the other fitting portion can be brought into contact with each other. In the hollow panel member according to claim 8,
The stepped surface portion has an outward projection formed from the outer surface toward the outside in the thickness direction of the member,
Of the pair of fitting parts to be connected, the tip surface of the outward projection in one fitting part and the inner surface of the second extension piece in the other fitting part are configured to be able to contact each other. In addition, the hollow panel member is configured such that an inner surface of the second extension piece in one fitting portion and a tip end surface of the outward projection portion in the other fitting portion can come into contact with each other. In the hollow panel member according to claim 8,
The second extension piece has an intermediate projection formed from the inner surface between the second leg and the inward projection to the inside in the thickness direction of the member,
Among the pair of fitting parts to be connected, the front end surface of the intermediate projection part in one fitting part and the outer surface of the stepped surface part in the other fitting part are configured to come into contact with each other, A hollow panel member, wherein an outer surface of the stepped surface portion in one fitting portion and a tip surface of the intermediate projection portion in the other fitting portion are configured to contact each other.   It has two or more hollow panel members of any one of Claims 1-10, and it is connected by fitting the said fitting parts of adjacent hollow panel members. Hollow panel.

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