JP5437914B2 - Panel member and manufacturing method thereof - Google Patents

Description

  The present invention relates to a panel member in which a plurality of plate members are stacked and edges are fastened by winding and a method for manufacturing the panel member.

  2. Description of the Related Art Conventionally, panel members in which an outer panel and an inner panel are overlaid and edges are fastened are widely used in automobile bonnets, trunks, doors, and the like.

  As a method for manufacturing the panel member, there is known a method in which an edge of the outer panel is bent and brought into contact with the inner panel. However, in such a simple fastening by bending, the contact resistance between the inner panel and the outer panel is low. It is small and the fastening force at the edge of the panel member is weak.

  Therefore, for example, the fastening method may not be applied to an edge portion that requires a relatively high fastening force, such as a part that is attached to a vehicle body body in a door of an automobile.

  As what increased the fastening force of the edge of a panel member, what overlaps an inner panel on an outer panel and winds up an edge is known.

  For example, in Patent Document 1, a second plate (inner panel) is stacked on a first plate (outer panel), and the edges of the outer panel and the inner panel are curled into a substantially circular cross section, and then the punch is flattened. A technique is disclosed in which the edge of the outer panel and the inner panel (panel member) is flattened by pressing the surface against the curled part from above, and the thickness of the edge is made constant.

  Note that FIG. 4B of Patent Document 1 describes that the thickness of the edge of the panel member is made equal to the height of the portion where the outer panel and the inner panel are stacked in layers.

JP 2007-136486 A

  As in Patent Document 1, when the edge of the panel member is fastened by tightening, the edge becomes thicker than that of simply bending the edge of the outer panel, and the curvature of the edge of the edge is Get smaller. As a result, the appearance of the panel member may be less beautiful.

  In addition, for example, when the above-mentioned Patent Document 1 is applied to an edge of an opening / closing member that opens and closes relative to a vehicle body, such as an automobile door, the edge becomes thick, and therefore, when the opening / closing member is opened and closed, In order to prevent interference with the vehicle body, it is necessary to set a wide gap between the edge and the vehicle body. As a result, the appearance of the automobile may be less beautiful.

  The present invention has been made in consideration of such problems, and provides a panel member and a method of manufacturing the same that can suppress a decrease in the beauty of the appearance even when the edges are fastened by winding. With the goal.

  The panel member according to the first invention is a panel member in which the second plate member is overlaid on the first plate member, and the edge portion is fastened by winding tightening, and at the edge portion fastened by the winding fastening, The end portion of the first plate member is encapsulated by the second plate member, and the end portion of the second plate member is encapsulated by the first plate member. A first panel body, and a first flange portion that extends to the end of the first plate member, and is connected to the first panel body, and the second plate member includes the first plate. A second panel main body with which an end portion of the member abuts, and a second flange portion that is connected to the second panel main body and is bent inward, and extends to the end portion of the second plate member. The flange portion includes a first portion that covers the second flange portion, and a continuous portion connected to the first portion. A second portion extending to the end of the first plate member and being bent to the outer side, and a portion where the end of the first plate member is located among the edges fastened by the tightening The first panel main body, the second panel main body, the second part, the second flange part, and the first part are overlapped, and the edges are fastened by the tightening. In the outer end portion located outside the end portion of the first plate member, the first panel main body, the second panel main body, the second flange portion, and the first portion are formed to overlap each other, and When the distance between the surface of the second flange portion facing the second panel body and the upper surface of the second panel body is H0, and the thickness of the end of the first plate member is H1, 0 ≦ It satisfies the relationship of H0 <H1

  According to such a configuration, the first panel main body, the second panel main body, the second flange portion, and the first portion are overlapped at the outer end portion of the edge portion fastened by winding, and 0 ≦ H0. Since the relationship of <H1 is satisfied, the thickness of the outer end portion can be reduced compared to the conventional case, and the curvature of the end portion of the edge portion can be increased. Thereby, it can suppress that the beauty of the appearance of a panel member falls. Moreover, since the edge part of the 1st board member and the 2nd board member is fastened by winding fastening, the fastening force of this edge part is maintained in a high state.

  For example, when the panel member is used as an opening / closing member for an automobile door or the like, the edge of the door attached to the vehicle body can be thinned. The gap between the vehicle body can be set narrow. Therefore, it can suppress that the beauty of the appearance of a car falls.

  Further, in the outer end portion, the second flange portion may be curved toward the second panel body at a portion facing the second panel body.

  Then, for example, when the force in the direction in which the first plate member is directed outward or the force in the direction in which the second plate member is directed inward is applied to the panel member, the curved portion of the second flange portion is Since it contacts the end of the first plate member, the relative displacement between the first plate member and the second plate member is different from that in which the second flange portion is not curved toward the second panel body. The width can be reduced.

  According to a second aspect of the present invention, there is provided a method for producing a panel member, comprising: a first step of stacking a second plate member on a first plate member; and an end portion of the first plate member is enclosed by the second plate member. The end portion of the second plate member is enclosed by the first plate member, and the portion of the second plate member that faces the end surface of the first plate member and the end surface of the first plate member A second step of curling the edges of the first plate member and the second plate member into a substantially circular cross section so that a gap is formed, and seam forming the curled portion, A first flange portion that is continuous with the first panel main body of the first plate member is bent inward while being continuous with the first panel main body and covers a second flange portion that is continuous with the second panel main body of the second plate member. Part and the first part, Forming a second part extending to an end of the first plate member, and in a part where the end of the first plate member is located, the first panel main body, the second panel main body, the second part The second flange portion and the first portion are formed so as to overlap each other, and at the outer end portion located outside the end portion of the first plate member, the first panel body, the second panel body, The second flange portion and the first portion are formed to overlap each other, and the distance between the surface of the second flange portion facing the second panel body and the upper surface of the second panel body is H0, And a third step of setting the distance H0 to 0 ≦ H0 <H1 when the thickness of the end portion of the first plate member is H1.

  According to such a manufacturing method, the panel member which concerns on 1st invention mentioned above is manufactured.

  Further, in the second step, the edge portions of the first plate member and the second plate member may be curled so that the gap is larger than the thickness of the second plate member. Thereby, in the said 3rd process, the said 2nd flange part can be reliably curved toward the said 2nd panel main body.

  According to the present invention, the first panel main body, the second panel main body, the second flange portion, and the first portion are overlapped at the outer end portion of the edge portion fastened by winding, and 0 ≦ H0 <H1. Therefore, it is possible to prevent the appearance of the panel member from deteriorating. In addition, since the edge part of the 1st board member and the 2nd board member is fastened by winding fastening, the fastening force of this edge part is maintained in a high state.

It is a partial cross section perspective view of the panel member concerning the embodiment of the present invention. It is the figure which showed FIG. 1 from the A arrow direction. It is a flowchart which shows the manufacturing process of the panel member shown in FIG. 4A is a cross-sectional view showing a state in which a work is placed on the lower mold, and FIG. 4B is a cross-sectional view showing a state in which the edge of the work is curled. FIG. 4C is a cross-sectional view showing a state where the curl edge is seam-formed. It is an enlarged side view which shows the structure of a curl edge part. It is an enlarged side view which shows the structure of a 1st edge part. It is a perspective view from the vehicle body front which shows the application location to the motor vehicle of the panel member which concerns on this invention. It is a perspective view from the vehicle body rear which shows the application location to the motor vehicle of the panel member which concerns on this invention.

  Hereinafter, preferred embodiments of the panel member and the manufacturing method thereof according to the present invention will be described in detail with reference to the accompanying drawings.

  The panel member is used, for example, as an automobile bonnet, trunk, door, or the like.

  As shown in FIG. 1, the panel member 10 according to the present embodiment is configured as an automobile rear door, and an outer panel 12 as a first plate member and an inner panel 14 as a second plate member are overlapped to form an edge portion 16. It is formed by engaging (fastening).

  The inner panel 14 is formed thinner than the outer panel 12. As the outer panel 12 and the inner panel 14, for example, a sheet metal material punched into a predetermined shape is used. As can be understood from FIGS. 1 and 2, a window frame 18 is formed in the panel member 10.

  The edge 16 of the panel member 10 extends three-dimensionally over the entire circumference of the rear door of the automobile, and constitutes the first edge 20 and a portion other than the first edge 20 of the edge 16. And a second edge portion 22.

  The first edge portion 20 is attached to an attachment side edge portion (a belt-like mesh portion H1 in FIG. 2) 20a attached to a vehicle body (not shown), and is opposed to the attachment side edge portion 20a (on the side opposite to the attachment side edge portion 20a). And a lock side edge portion (in FIG. 2, a belt-like mesh portion H2) 20b.

  As shown in FIGS. 1, 4 </ b> C, and 6, in the first edge portion 20, the end portion of the outer panel 12 is included in the inner panel 14, and the end portion of the inner panel 14 is included in the outer panel 12. It is said that.

  Thereby, the fastening strength of the attachment side edge 20a to which a load is applied in a state in which the panel member (automobile rear door) 10 is attached to the vehicle body can be increased. A specific configuration of the first edge portion 20 will be described later.

  As shown in FIG. 1, the second edge 22 has a configuration different from that of the first edge 20. The second edge 22 may be formed by, for example, bending the edge of the outer panel 12 and bringing it into contact with the inner panel 14. Thereby, since the edge part of the 2nd edge part 22 can be made thin, the external appearance of the panel member 10 can be made beautiful. However, the second edge 22 may be configured in the same manner as the first edge 20.

  Next, the processing apparatus 100 for manufacturing the panel member 10 will be described with reference to FIGS. 4A to 4C. In the following description, the outer panel 12 and the inner panel 14 in a state where the first edge portion 20 (second edge portion 22) is not formed may be collectively referred to as a workpiece W.

  As shown in FIGS. 4A to 4C, the processing apparatus 100 includes a lower mold 102 on which a workpiece W is placed, and an upper mold 104 that is positioned above the lower mold 102 and can be moved up and down.

  The upper die 104 includes a pressing pad 106 for holding the workpiece W, a curl punch 108 for curling a first flange portion 12b and a second flange portion 14b of the workpiece W, which will be described later, into a substantially circular cross section, A seam punch (see FIG. 4C) 110 for seam-molding a curled part (curl edge B) of W in a flat shape is provided.

  The curl punch 108 is formed with a curl forming blade 112 that is formed in an arc shape in cross section and contacts the workpiece W, and the seam punch 110 is formed with a seam forming blade 114 that contacts the curl edge B. The seam forming blade 114 includes a first forming blade 116 that is formed substantially flat, and a second forming blade 118 that is connected to the first forming blade 116 and protrudes downward from the first forming blade 116.

  Then, the manufacturing method of the panel member 10 which concerns on this embodiment is demonstrated, referring FIGS. In the following description, the forming process of the first edge portion 20 will be described, and the description of the forming process of the second edge portion 22 will be omitted. This is because the configuration of the second edge 22 described above can be manufactured by a conventional method.

  First, as shown in FIG. 4A, the inner panel 14 is placed on the outer panel 12 so as to overlap the lower mold 102 (step S1 in FIG. 3). At this time, the outer panel 12 has an outer panel main body 12a as a first panel main body, and a first flange portion 12b that is connected to the outer panel main body 12a and bent at a substantially right angle with respect to the outer panel main body 12a. The inner panel main body 14a as the second panel main body and the second flange portion 14b connected to the inner panel main body 14a and bent at a substantially right angle with respect to the inner panel main body 14a. That is, the edge of the workpiece W is bent at a substantially right angle.

  Next, when the upper die 104 is lowered (step S2), the pressing pad 106 contacts and presses the upper surface of the inner panel main body 14a to hold the workpiece W. When the upper die 104 is further lowered, as shown in FIG. 4B, the first flange portion 12b and the second flange portion 14b are curled by the curl punch 108, and the curled edge portion B is formed at the edge portion of the workpiece W. (Step S3).

  Here, before proceeding to the description of step S4, the configuration of the curl edge B formed in step S3 will be described in detail with reference to FIG. Since the first flange portion 12b of the curled edge portion B is changed to reference character 12c and the second flange portion 14b of the curled edge portion B is changed to reference character 14c because it is after being curled. I will explain.

  As shown in FIG. 5, the first flange portion 12 c is bent to the first portion 30 covering the second flange portion 14 c and to the outside (the side where the base portion of the first flange portion 12 c is located) connected to the first portion 30. In addition, a second portion 32 extending to the end of the outer panel 12 is formed.

  Further, as can be seen from FIG. 5, the first portion 30 is curved in a circular arc shape in cross section, and the second flange portion 14 c is curved along the first portion 30. That is, the curl edge B is formed in a substantially circular cross section. The tip of the second part 32 is in contact with the upper surface of the inner panel main body 14a.

  Further, at the curled edge B, the end portion of the first flange portion 12 c is included in the inner panel 14, and the end portion of the second flange portion 14 c is included in the outer panel 12.

  Note that a gap is formed between a portion of the second flange portion 14 c that faces the end surface of the second portion 32 and the end surface of the second portion 32. That is, the end surface of the second part 32 is not in contact with the inner panel 14. As can be understood from FIG. 5, the gap interval L <b> 1 is larger than the thickness of the inner panel 14.

  Next, steps after step S4 in FIG. 3 will be described. When the step S3 described above is completed, the upper mold 104 is raised (step S4). At this time, the holding pad 106 is separated from the inner panel body 14a, and the holding of the workpiece W is once released. In this step S4, only the curl punch 108 may be raised without changing the position of the pressing pad 106.

  Subsequently, the seam punch 110 is set so that the seam forming blade 114 is positioned above the curl edge B (step S5). Thereafter, when the upper mold 104 is lowered (step S6), the pressing pad 106 contacts and presses the upper surface of the inner panel main body 14a to hold the workpiece W. As shown in FIG. 4C, when the upper mold 104 is further lowered, the curl edge B is seam-formed by the seam punch 110 to form the first edge 20 of the panel member 10 according to this embodiment ( Step S7). Thereby, the 1st flange part 12b of the outer panel 12 and the 2nd flange part 14b of the inner panel 14 will be fastened by winding.

  In the following description, since the seam is formed, the first flange portion 12c of the first edge 20 changes the reference symbol to 12d, and the first portion 30 changes the reference symbol to the first portion 30a. In other words, the second portion 32 is described by changing the reference number to 32a, and the second flange portion 14c of the first edge 20 is changed to the reference number 14d.

  Step S7 will be described in detail. When the upper die 104 is lowered, as shown in FIGS. 4C and 5, the first forming blade 116 comes into contact with the portion of the curled edge B where the second portion 32 is located. The second forming blade 118 is in contact with a portion of the curl edge B located outside the end of the outer panel 12.

  Further, as the upper mold 104 is further lowered, as shown in FIGS. 4C and 6, the first flange portion 12 c and the second flange portion 14 c are deformed flat, so that the first edge portion 20 of the panel member 10 has the first edge portion 20. The part formed by the first forming blade 116 becomes thick, and the part formed by the second forming blade 118 becomes thin.

  At this time, since the first portion 30 pushed downward by the second forming blade 118 pushes the second flange portion 14c downward, the second flange portion 14d of the panel member 10 faces the inner panel body 14a. Thus, a curved portion 34 that is curved is formed. As can be seen from FIG. 6, the bending portion 34 is located below the upper surface of the second portion 32a.

  Subsequently, when the upper mold 104 is raised (step S8), the pressing pad 106 is separated from the inner panel body 14a and the holding of the panel member 10 is released. Thereafter, the panel member 10 is removed from the lower mold 102 (step S9). At this stage, the process of the method for manufacturing the panel member 10 according to the present embodiment is completed.

  Next, the structure of the 1st edge part 20 of the panel member 10 manufactured according to such a process is demonstrated in detail, referring FIG.

  As shown in FIG. 6, the first flange portion 12 d includes a first portion 30 a that covers the second flange portion 14 d, a second portion that extends to the end portion of the outer panel 12 while being bent outward and connected to the first portion 30 a. A region 32a is formed.

  Further, as can be seen from FIG. 6, in the portion C <b> 1 where the end portion of the outer panel 12 is located in the first edge portion 20, the outer panel body 12 a, the inner panel body 14 a, the second portion 32 a, and the second flange portion. 14d and the first portion 30a are overlapped.

  On the other hand, in the outer edge portion C2 located outside the end portion of the outer panel 12 in the first edge portion 20, the outer panel body 12a, the inner panel body 14a, the second flange portion 14d, and the first portion 30a overlap. Is formed.

  That is, the thickness of the outer panel body 12a is H1a, the thickness of the first portion 30a is H1b, the thickness of the second portion 32a is H1c, the thickness of the inner panel body 14a is H2a, the thickness of the second flange portion 14d is H2b, and the inner panel body. When the distance between the lowermost part of the lower surface of the curved portion 34 facing 14a and the upper surface of the inner panel main body 14a is H0, the end of the outer panel 12 of the first edge 20 is located. The thickness T1 of the part C1 is T1 = H1a + H2a + H1c + H2b + H1b, and the thickness T2 of the outer end part C2 of the first edge 20 is T2 = H1a + H2a + H0 + H2b + H1b.

  Further, the first edge portion 20 is formed so as to satisfy the relationship of 0 ≦ H0 <H1c. In FIG. 6, the curved portion 34 and the inner panel main body 14a are not in contact with each other, but the lowermost portion of the lower surface of the curved portion 34 and the upper surface of the inner panel main body 14a are in contact with each other. May be.

  Thus, in the outer end portion C2 of the first edge portion 20, the outer panel body 12a, the inner panel body 14a, the second flange portion 14d, and the first portion 30a are overlapped, and the relationship of 0 ≦ H0 <H1c is satisfied. Therefore, the thickness of the end portion of the first edge portion 20 can be reduced compared to the conventional case, and the curvature of the end portion of the first edge portion 20 can be increased. Thereby, it can suppress that the beauty of the external appearance of the panel member 10 falls.

  Moreover, in this embodiment, since the 1st flange part 12b of the outer panel 12 and the 2nd flange part 14b of the inner panel 14 are fastened by fastening, the fastening force of the 1st edge part 20 of the panel member 10 is a high state. Can be maintained.

  Further, in the present embodiment, the panel member 10 is used as the rear door of the automobile, and the attachment side edge 20a is attached to the vehicle body, so that the gap between the attachment side edge 20a and the vehicle body can be set narrow. it can. Therefore, it can suppress that the beauty of the appearance of a car falls.

  Further, from the viewpoint of the appearance of the door, the lock side edge portion 20b is easy to enter the user's field of view, and it is more important to make the lock side edge portion 20b thinner. Since the curvature of the end of the lock can be increased, the appearance of the lock side edge 20b is improved.

  Further, since the curved portion 34 is formed in the second flange portion 14d, for example, when a force in a direction in which the outer panel 12 is directed outward or a force in a direction in which the inner panel 14 is directed inward acts on the panel member 10. Since the end surface of the second part 32a and the curved portion 34 are in contact with each other, the relative position shift width between the outer panel 12 and the inner panel 14 can be reduced as compared with the case where the curved portion 34 is not formed.

  The present invention is not limited to the above-described embodiment, and it is naturally possible to adopt various configurations without departing from the gist of the present invention.

  For example, although the panel member 10 of the said embodiment demonstrated the example used as a motor vehicle rear part door, of course, it becomes applicable also not only to this but another location. For example, as an application part of a panel member, as shown in FIG.7 and FIG.8, the front door 42, the bonnet 44, the trunk 46, etc. can be mentioned.

  In such a case, the vehicle rear door (panel member 10) of the vehicle front door 42 with the mounting side edge 42a connected to the vehicle body 48 of the vehicle front door 42 and the vehicle front door 42 closed. The panel-side member 10 of the present embodiment includes a lock-side edge 42b that faces the mounting-side edge 20a, an edge 44a that faces the windshield 50 of the bonnet 44, and an edge 46a that faces the rear glass 52 of the trunk 46. A configuration similar to that of the first edge portion 20 may be applied.

  Of course, the panel member and the manufacturing method thereof according to the present invention can be applied to products other than automobiles.

  Further, in the panel member manufacturing method according to the present invention, in the above embodiment, an example in which curl forming and seam forming are performed from the same direction (above) with respect to the work has been described. Molding and seam molding may be performed.

  Further, in the panel member manufacturing method according to the present invention, the first flange portion of the outer panel and the second flange portion of the inner panel are curled to form a curled edge portion having a substantially circular cross section. Of these, only the portion outside the portion where the end portion of the outer panel is located may be seam-formed and deformed flat. That is, in the first edge portion of the panel member, the shape of the curl edge portion is maintained at the portion where the end portion of the outer panel is located. Even in such a case, since the above-described relationship of 0 ≦ H0 <H1c is established at the first edge portion of the panel member, it is possible to suppress a decrease in the appearance of the panel member.

DESCRIPTION OF SYMBOLS 10 ... Panel member 12 ... Outer panel 12a ... Outer panel main body 12b-12d ... 1st flange part 14 ... Inner panel 14a ... Inner panel main body 14b-14d ... 2nd flange part 20 ... 1st edge part 22 ... 2nd edge part 30, 30a ... 1st site | part 32, 32a ... 2nd site | part 34 ... Curve part

Claims (4)

A panel member in which the second plate member is overlaid on the first plate member and the edge portion is fastened by winding,
At the edge portion fastened by the tightening, the end portion of the first plate member is included in the second plate member, and the end portion of the second plate member is included in the first plate member; And
The first plate member includes a first panel body,
A first flange portion that is continuous with the first panel body and is bent inward, and extends to an end portion of the first plate member;
The second plate member includes a second panel body with which an end of the first plate member abuts,
A second flange portion that extends to the end of the second plate member and is bent inward in connection with the second panel body;
The first flange portion includes a first portion that covers the second flange portion,
A second portion extending to the end portion of the first plate member and being bent outward and connected to the first portion;
Among the edges fastened by the tightening, in the part where the end of the first plate member is located, the first panel body, the second panel body, the second part, the second flange part, And the first part is formed overlapping,
Among the edges fastened by the tightening, in the outer end portion located outside the end of the first plate member, the first panel main body, the second panel main body, the second flange portion, And the distance between the surface of the second flange portion facing the second panel body and the upper surface of the second panel body is H0, and the first plate member A panel member characterized by satisfying a relationship of 0 ≦ H0 <H1 when the thickness of the end portion is H1. The panel member according to claim 1,
The panel member characterized in that, in the outer end portion, a portion of the second flange portion facing the second panel body is curved toward the second panel body. A first step of stacking a second plate member on the first plate member;
An end portion of the first plate member is included by the second plate member, an end portion of the second plate member is included by the first plate member, and the first plate of the second plate members is included. The edges of the first plate member and the second plate member are curled into a substantially circular cross section so that a gap is formed between the portion facing the end surface of the member and the end surface of the first plate member. A second step;
By seam molding the curled part,
In the first flange portion connected to the first panel body of the first plate member, the first flange portion is connected to the first panel body and bent inward and covers the second flange portion connected to the second panel body of the second plate member. Forming a first part and a second part that is connected to the first part and bent outward, and extends to an end of the first plate member;
In the part where the end part of the first plate member is located, the first panel body, the second panel body, the second part, the second flange part, and the first part are overlaid,
In the outer end portion located outside the end portion of the first plate member, the first panel main body, the second panel main body, the second flange portion, and the first portion are overlapped and formed, and When the distance between the surface of the second flange portion facing the second panel main body and the upper surface of the second panel main body is H0, and the thickness of the end of the first plate member is H1, the distance H0. And a third step of 0 ≦ H0 <H1. A method for manufacturing a panel member, comprising: In the manufacturing method of the panel member of Claim 3,
A method of manufacturing a panel member, comprising curling the edges of the first plate member and the second plate member so that the gap is larger than the thickness of the second plate member.

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