JP5605170B2 - Vehicle door frame and method for manufacturing vehicle door frame - Google Patents

Description

  The present invention relates to a vehicular door frame comprising a frame member having a long member integrally formed with a hollow main body portion and a flange portion extending from the hollow main body portion and having a bent portion bent with respect to the longitudinal direction, and The present invention relates to a method for manufacturing a vehicle door frame.

  Conventionally, as this type of vehicle door frame, for example, there is one described in Patent Document 1. In the thing of patent document 1, the frame member which is the elongate member which integrally has the hollow main-body part and the flange part extended from the same hollow main-body part, and has the bending part bent with respect to the longitudinal direction. It is formed from a single plate material. Here, prior to the bending process of bending the long member with respect to the longitudinal direction, the flange part constituting the bent part is excised, and after performing the bending process, the above-described flange part is excised. A bracket is welded and fixed to the bent portion so as to close the formed portion. In this way, by making the portion corresponding to the flange portion constituting the bent portion a member different from the frame member, the size of the bent portion cannot be reduced due to bending technical restrictions. The size of the bent portion, particularly the bent region of the flange portion can be reduced.

JP 2002-127749 A

  However, in such a conventional vehicle door frame, when trying to increase the degree of freedom in designing the bent portion of the door frame, other parts such as a bracket are required in addition to the frame member as described above. There arises a problem that the number of parts of the door frame increases.

  Such a problem is not limited to one in which the frame member is formed of a single plate material, and may occur in common in other cases in which the frame member is formed by extrusion molding, for example.

  The objective of this invention is providing the manufacturing method of the door frame for vehicles which can enlarge the design freedom of the bending part of a door frame, without increasing a number of parts, and the door frame for vehicles.

  In order to solve the above problems, the invention described in claim 1 is a long member integrally having a hollow main body portion and a flange portion extending from the hollow main body portion, and is bent with respect to the longitudinal direction. A vehicle door frame including a frame member having a bent portion, wherein the bent portion is formed with a through hole that divides the hollow main body portion and the flange portion, and the through hole is the bent portion in the longitudinal direction. The gist of the invention is that the flange portion is formed so as to be separated from the hollow main body portion as it approaches the center.

  According to this configuration, the bent shape of the flange portion in the longitudinal direction is independent of the bent shape of the hollow body portion by forming a through hole that divides the hollow body portion and the flange portion in the bent portion of the frame member. And will be able to. Accordingly, the degree of freedom in designing the bent portion of the door frame can be increased without increasing the number of parts.

  According to the first aspect of the present invention, the vehicle door frame can be embodied in such a manner that the frame member is formed of a single plate material.

  According to a third aspect of the present invention, in the vehicle door frame according to the first or second aspect, the flange portion constituting the bent portion extends along a direction in which another flange portion connected to the bent portion extends. Its gist is that it has a shape.

In the vehicle door frame, it is desired to reduce the bent portion of the frame member, particularly the bent region of the flange portion, from the viewpoint of the design of the vehicle to which the door frame is attached.
In this regard, according to the above-described configuration, the flange portion constituting the bent portion is shaped along the direction in which the other flange portion connected to the bent portion extends, so that the bending region of the flange portion can be reduced. It becomes like this.

  Invention of Claim 4 makes it the summary that the covering member which covers opening of the said through-hole is provided in the vehicle door frame as described in any one of Claims 1-3. .

  In the configuration in which a through hole that divides the hollow main body portion and the flange portion is formed in the bent portion of the frame member, there is a risk that foreign matter may enter the through hole, and the design of the door frame due to the presence of the through hole. May be damaged.

  In this regard, according to the above configuration, since the opening of the through hole is covered with the covering member, it is possible to avoid foreign matter from entering the through hole. Moreover, it can suppress suitably that the designability of a door frame is impaired by forming a through-hole in the bending part of a frame member.

  According to a fifth aspect of the present invention, in the vehicle door frame according to the fourth aspect, the covering member constitutes a glass run provided between the frame member and the window glass to hold the window glass. This is the gist.

  According to this configuration, since the covering member constitutes the glass run, an increase in the number of parts can be suppressed as compared with a configuration in which the covering member is a separate member from the glass run, and the vehicle door The structure of the frame can be simplified.

  According to a sixth aspect of the present invention, a long member having a hollow body portion and a flange portion extending from the hollow body portion as an integral body and a frame member having a bent portion bent with respect to the longitudinal direction is formed. And a slit hole forming step that extends along the longitudinal direction before or after the bending process at the portion to be the bent portion and that forms a slit hole that divides the hollow main body portion and the flange portion, and the longitudinal direction. And a pressing step of pressing the flange portion so that the flange portion is separated from the hollow main body portion as it approaches the center of the bent portion.

  According to this configuration, first, in the slit hole forming step, a long member having a hollow main body portion and a flange portion is formed, and a bent portion is formed by bending the longitudinal member with respect to the longitudinal direction. Is done. Further, a slit hole for dividing the hollow main body portion and the flange portion is formed in a portion to be a bent portion before the bending process or in the bent portion after the bending process. Next, in the pressing process, by pressing the flange portion, the flange portion is separated from the hollow main body portion as it approaches the center of the bent portion in the longitudinal direction. Thereby, the frame member in which the bent shape of the flange portion in the longitudinal direction is independent from the bent shape of the hollow main body portion can be manufactured. Therefore, it is possible to manufacture a door frame that increases the degree of freedom in designing the bent portion of the door frame without increasing the number of parts.

  The door frame manufacturing method according to claim 6, as in the invention according to claim 7, is embodied with an aspect that includes a roll forming step of forming the frame member from a single plate material by roll forming. Can do.

  According to an eighth aspect of the present invention, in the vehicle door frame manufacturing method according to the sixth or seventh aspect of the present invention, in the press working step, another flange portion constituting the bent portion is connected to the bent portion. The gist of the present invention is to press-work into a shape along the direction in which the flange portion extends.

In the vehicle door frame, it is desired to reduce the bent portion of the frame member, particularly the bent region of the flange portion, from the viewpoint of the design of the vehicle to which the door frame is attached.
In this regard, according to the above configuration, in the pressing process, the flange portion constituting the bending portion is pressed into a shape along the direction in which the other flange portion connected to the bending portion extends, so that bending of the flange portion is performed. The area can be reduced.

  According to a ninth aspect of the present invention, in the vehicle door frame manufacturing method according to any one of the sixth to eighth aspects, the slit hole is formed before the bending process in the slit hole forming step. The gist is to form.

  According to this configuration, the slit hole is formed before the bending process in the slit hole forming step. For this reason, a linear slit hole may be formed, and the slit hole can be easily formed.

  According to a tenth aspect of the present invention, in the vehicle door frame manufacturing method according to any one of the sixth to eighth aspects, the slit hole is formed after the bending process in the slit hole forming step. The gist is to do.

  When the process of forming the slit hole before the bending process is adopted, there is a possibility that the bending process cannot be suitably performed because the rigidity is locally reduced due to the existence of the slit hole.

  In this regard, according to the above-described configuration, the slit hole is formed after the bending process, so that the presence of the slit hole during the bending process can be avoided.

  According to an eleventh aspect of the present invention, in the vehicle door frame manufacturing method according to any one of the sixth to tenth aspects, the opening of the through hole deformed from the slit hole after the pressing step is provided. The gist is to further include an attaching step of attaching a covering member to the frame member.

  According to this configuration, it is possible to manufacture a door frame that can prevent foreign matter from entering the through hole. Moreover, the door frame which can suppress suitably that the designability of a door frame is impaired by forming a through-hole in the bending part of a frame member comes to be manufactured.

  According to the present invention, it is possible to provide a vehicle door frame and a vehicle door frame manufacturing method capable of increasing the degree of freedom in designing a bent portion of the door frame without increasing the number of parts.

BRIEF DESCRIPTION OF THE DRAWINGS Schematic which shows schematically the structure seen from the vehicle interior of the front door to which a door frame is applied about one Embodiment of the vehicle door frame which concerns on this invention. The perspective view which shows the one part perspective structure about the elongate member before the bending process in the embodiment. The perspective view which shows the perspective structure centering on a bending part about the elongate member after the bending process in the embodiment. Sectional drawing which shows the cross-section of the elongate member seen from the arrow A direction of FIG. The perspective view which shows the perspective structure centering on the bending part about the frame member in the embodiment. Sectional drawing which shows the cross-section along a BB line of FIG. It is sectional drawing which shows the sectional structure of the door frame in the embodiment, Comprising: (a) Sectional drawing which shows the state which attached the outer side coating | coated part of the glass run from the outer side with respect to a frame member, (b) It shows to (a) Sectional drawing which shows the state which welded the inner side coating | coated part of the glass run with respect to the outer side coating | coated part from the state. Schematic which shows roughly the structure seen from the vehicle interior of the front door and rear door to which a door frame is applied about the modification of the vehicle door frame which concerns on this invention.

  1 to 7, the vehicle door frame and the vehicle door frame manufacturing method according to the present invention are embodied as a door frame applied to a front door of a sedan type vehicle and a manufacturing method thereof. One embodiment will be described in detail.

  Hereinafter, the front direction of the vehicle is simply referred to as “front”, the rear side of the vehicle is simply referred to as “rear side”, the upper side in the vertical direction is simply referred to as “upward”, and the lower side in the vertical direction is simply referred to as “downward”. In the vehicle width direction, the inside of the vehicle is simply referred to as “inside”, and the outside of the vehicle is simply referred to as “outside”.

  As shown in FIG. 1, the front door 1 is displaced in the vertical direction with respect to the door body 2 attached to the vehicle body, the door frame 3 connected to the upper portion of the door body 2, and the door body 2 and the door frame 3. It consists of the window glass 4 provided. The door frame 3 includes a vertical frame portion 3A that extends obliquely rearward and upward, a bent portion 3C that gradually turns forward while bending from the upper end portion of the vertical frame portion 3A, and an upper portion that extends diagonally forward and downward from the front end portion of the bent portion 3C. It consists of a frame part 3B. In addition, in FIG. 1, the schematic structure of the front door 1 when it sees from a vehicle interior is shown.

Next, the manufacturing method and structure of the door frame 3 of this embodiment will be described.
With reference to FIGS. 2-6, the manufacturing method of the frame member 30 which comprises the door frame 3, and its structure are demonstrated.

  First, as shown in FIG. 2, a long member 230 that is a raw material of the frame member 30 is formed by roll forming a single plate material made of an iron-based material (roll forming step). The elongated member 230 has the same cross-sectional shape in the longitudinal direction, and is formed by folding a plate member while extending from the hollow main body portion 231 and the hollow main body portion 231 that define the hollow space H. Flange portion 232. In addition, as a board | plate material, what consists of an iron-type material is employ | adopted, However, This can also consist of an aluminum-type material and another metal type material.

  Next, as shown in FIG. 3, the long member 230 having the bending portion 130C is formed by bending the long member 230 with respect to the longitudinal direction (bending step). Hereinafter, in the elongated member 130, a portion corresponding to the vertical frame portion 3A is bent to a vertical frame portion 130A, a portion corresponding to the upper frame portion 3B is bent to a portion corresponding to the upper frame portion 130B, and the bent portion 3C. This will be referred to as a section 130C. Further, the longitudinal direction of the long member 130 means the extending direction in each part of the long member 130. Specifically, the vertical frame portion 130A is in the direction of arrow D1 in FIG. 3, the upper frame portion 130B is in the direction of arrow D2 in FIG. 3, and the bent portion 130C is in the direction of arrow D3 in FIG.

In addition, since both the said roll forming process and the said bending process are conventional processes, detailed description is omitted.
Here, with reference to FIG. 4, the cross-sectional shape of the elongate member 130 is demonstrated.

  As shown in FIG. 4, the hollow main body portion 131 is bent from both the inner end portion and the outer end portion of the substantially flat plane portion 131 a extending inward and outward, and from the inner end portion and the outer end portion of the flat portion 131 a, respectively. A pair of inclined portions 131b that incline so as to gradually approach, and a pair of parallel portions 131c that are bent from the rear end portions of the pair of inclined portions 131b and extend rearwardly and are substantially parallel to each other. ing. Further, the hollow main body 131 includes a long side portion 131d that bends from the rear end portion of the pair of parallel portions 131c (the portion positioned on the lower side in FIG. 4) and extends outward, Of the pair of parallel portions 131c, the outer side portion (the upper portion in FIG. 4) is bent from the rear end portion and extended outward, and has a short side portion 131e shorter than the long side portion 131d. ing. The hollow main body 131 is bent from the rear end of the long side 131d and extends obliquely outward and forward, further bent and extended obliquely outward and obliquely outward and the short side 131e. It has an outer bent portion 131g that is bent from the rear end portion and extends forward, and further bent and extended obliquely rearward and outward. In addition, the rear side end portion of the short side portion 131e is in contact with the inner bent portion 131f, and the portion that is bent at the tip of the inner bent portion 131f and extends obliquely rearward outside is bent at the tip of the outer bent portion 131g. It is in contact with a portion extending diagonally rearward outside.

Here, a portion where the inner bent portion 131f and the outer bent portion 131g are in contact with each other is a boundary portion 133 that is a boundary between the hollow main body portion 131 and the flange portion 132.
The other end of the plate material is inserted into a space formed by folding one end of the plate material, and a portion where the one end and the other end overlap each other is a flange portion 132.

  Next, as shown in the previous FIG. 3, the boundary portion 133 in the bending portion 130 </ b> C of the elongated member 130 extends along the longitudinal direction (arrow D <b> 3 direction) and has a hollow main body portion 131 and a flange portion 132. A slit hole P1 is formed so as to cut through (slit hole processing step).

  Next, as shown in FIG. 5, in the longitudinal direction (arrow D3 direction), the flange portion 32C is separated from the hollow body portion 31C so as to approach the center (BB line) of the bent portion 30C. Press work (press work process). Specifically, in the flange portion constituting the bending portion 130C shown in FIG. 3, the portion from the end on the vertical frame portion 130A side to the end on the center side of the bending portion 130C is shown in FIG. Pressing is performed in the direction indicated by arrow F. As a result, as shown in FIG. 5, a through hole P2 that divides the hollow main body portion 31C and the flange portion 32C is formed in the bent portion 30C, and this through hole P2 is formed in the longitudinal direction (arrow D3). The flange portion 32C is formed so as to be separated from the hollow main body portion 31C as it approaches the center. Specifically, in the flange portion 32C constituting the bent portion 30C, a portion located on the vertical frame portion 30A side from the center is a shape along the direction in which the vertical frame portion 30A extends (arrow D1). A portion located on the upper frame portion 30B side from the center is shaped along the direction in which the upper frame portion 30B extends (arrow D2). Thereby, the bending region of the flange portion 32C becomes a region indicated by an arrow RF in FIG. 5, and is smaller than the bending region of the hollow main body portion 31C, that is, the region of the bending portion 30C.

  Next, a process of attaching the glass run 40 to the frame member 30 (hereinafter referred to as an attaching process) will be described with reference to FIG. 7A shows a state in which the outer covering portion 43 of the glass run 40 is attached to the frame member 30 from the outside, and FIG. 7B shows a glass run from the state shown in FIG. 7A. A state in which 40 inner covering portions 44 are welded to the outer covering portion 43 is shown.

  As shown in FIG. 7A, the glass run 40 is provided between the frame member 30 and the window glass (not shown) to hold the window glass 4, and is largely hollow in the frame member 30. From the body side attachment part 41 attached to the body part 31C, the flange side attachment part 42 attached to the flange part 32C, the outer covering part 43 covering the through hole P2 from the outside, and the inner covering part 44 covering the through hole P2 from the inside. Become.

  The main body portion side mounting portion 41 is inserted into a concave groove defined by the inclined portion 31b of the hollow main body portion 31C, the surface located outside the parallel portion 31c, and the outer bent portion 31g, thereby forming the hollow main body portion 31C. Is attached to. Further, the main body portion side mounting portion 41 extends from the inner peripheral end portion thereof to a lip portion 41b that contacts the flat surface portion 31a of the hollow main body portion 31C, and from the inner peripheral end portion to the outside of the frame member 30. It has the inner peripheral side glass holding piece 41a extended toward.

  The flange-side attachment portion 42 is provided in such a manner that the flange portion 32C is covered from three sides, the outer side, the outer peripheral side, and the inner peripheral side, and has an opening on the inner side. Further, the flange-side attachment portion 42 has an outer peripheral side glass holding piece 42 a extending from the outer end portion toward the inner peripheral side of the frame member 30. In addition, two seal pieces (an outer seal piece 42b and an inner seal piece 42c) extending toward the outer peripheral side are formed on the outer peripheral surface of the flange side mounting portion 42 so as to protrude apart from each other in the inner and outer directions.

The outer covering portion 43 is located between the main body side attachment portion 41 and the flange side attachment portion 42 and is connected to the attachment portions 41 and 42 at both ends thereof.
The inner covering portion 44 is connected to the inner end portion of the flange side attachment portion 42 and extends inward. And after attaching the main-body-part side attaching part 41, the flange side attaching part 42, and the outer side covering part 43 which comprise the glass run 40 with respect to the frame member 30, the inner side covering part 44 in the arrow D4 direction of 7 (a). The inner covering portion 44 is welded to the inner end surface of the outer covering portion 43 as shown in FIG. As described above, the outer covering portion 43 and the inner covering portion 44 are welded through the through hole P2 of the frame member 30, so that the flange portion 32C of the frame member 30 is surrounded by the glass run 40. . In other words, the glass run 40 penetrates the frame member 30. Therefore, it is possible to avoid the glass run 40 from falling off from the frame member 30.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In the present embodiment, the vehicle door frame 3 is formed of a single plate member and has flange portions 32A, 32B, 32C extending from the hollow main body portions 31A, 31B, 31C and the hollow main body portions 31A, 31B, 31C. And a frame member 30 having a bent portion 30C bent with respect to the longitudinal direction. The bent portion 30C is formed with a through hole P2 that divides the hollow main body portion 31C and the flange portion 32C, and the through hole P2 becomes hollower as it approaches the center of the bent portion 30C in the longitudinal direction (the direction of arrow D3 in FIG. 5). The flange portion 32C is formed so as to be separated from the main body portion 31C. Thus, by forming the through hole P2 that divides the hollow main body portion 31C and the flange portion 32C in the bent portion 30C of the frame member 30, the bent shape of the flange portion 32C in the longitudinal direction is changed to the bent shape of the hollow main body portion 31C. Can become independent. Therefore, the degree of freedom in designing the bent portion 30C of the frame member 30 can be increased without increasing the number of parts.

  (2) In the present embodiment, the flange portion 32C constituting the bent portion 30C is along the direction in which the other flange portions 32A and 32B connected to the bent portion 30C extend (the direction of the arrow D1 or the arrow D2 in FIG. 5). It has a shape.

In the vehicle door frame, it is desired to reduce the bent portion of the frame member, particularly the bent region of the flange portion, from the viewpoint of the design of the vehicle to which the door frame is attached.
In this regard, according to the embodiment described above, the bending region RF of the flange portion 32C can be reduced (see FIG. 5).

  (3) In the present embodiment, the covering members (the outer covering portion 43 and the inner covering portion 44) that cover the opening of the through hole P2 are provided. Further, this covering member is provided between the frame member 30 and the window glass 4 and constitutes a glass run 40 that holds the window glass 4.

  In the configuration in which the through hole P2 that divides the hollow main body portion 31C and the flange portion 32C is formed in the bent portion 30C of the frame member 30, there is a risk that foreign matter may enter the through hole P2, There exists a possibility that the designability of a door frame may be impaired by presence.

  In this regard, according to the above-described embodiment, since the opening of the through hole P2 is covered by the covering member (the outer covering portion 43 and the inner covering portion 44), it is possible to avoid the entry of foreign matter into the through hole P2. Moreover, it can suppress suitably that the designability of a door frame is impaired by forming the through-hole P2 in the bending part 30C of the frame member 30. FIG. Moreover, according to the said embodiment, since a coating | coated member (the outer side coating part 43, the inner side coating | coated part 44) shall comprise the glass run 40, compared with the structure which makes a coating | coated member a member different from a glass run. The increase in the number of parts can be suppressed, and the configuration of the vehicle door frame 3 can be simplified.

  (4) The manufacturing method of the vehicle door frame 3 of the present embodiment includes the following slit hole forming step and press working step. In this slit hole forming step, a long member 130 having a hollow main body part 131 and a flange part 132 extending from the hollow main body part 131 and having a bent part 130C bent with respect to the longitudinal direction is used. It is formed from a single plate material. Further, a slit hole P1 that extends along the longitudinal direction (in the direction of arrow D3 in FIG. 3) and divides the hollow main body portion 131 and the flange portion 132 is formed so as to penetrate the portion that becomes the bending portion 130C. ing. In the press working step, the flange portion is pressed so that the flange portion 32C is separated from the hollow main body portion 31C as it approaches the center of the bent portion 30C in the longitudinal direction.

  According to this embodiment provided with such a process, it becomes possible to manufacture the frame member 30 in which the bent shape of the flange portion 32C in the longitudinal direction is independent from the bent shape of the hollow main body portion 31C. Therefore, it becomes possible to manufacture the door frame 3 that increases the degree of freedom in designing the bent portion 30C of the frame member 30 without increasing the number of parts.

  (5) In the press working step of the present embodiment, the direction in which the other flange portions 32A and 32B that connect the flange portion 32C constituting the bent portion 30C to the bent portion 30C extend (arrow D1 direction, arrow D2 direction in FIG. 5). ) Is pressed into a shape along the line. As a result, the bending region RF of the flange portion 32C can be reduced.

(6) In the slit hole forming step of the present embodiment, the slit hole P1 is formed after bending.
When the process of forming the slit hole before the bending process is adopted, there is a possibility that the bending process cannot be suitably performed because the rigidity is locally reduced due to the existence of the slit hole.

  In this regard, according to the above-described embodiment, the slit hole P1 is formed after the bending process, so that the presence of the slit hole P1 during the bending process can be avoided.

  (7) In the manufacturing method of the vehicle door frame 3 of the present embodiment, the covering members (the outer covering portion 43 and the inner covering portion 44) that cover the opening of the through hole P2 deformed from the slit hole P1 after the press working step are framed. An attachment process for attaching to the member 30 is further provided. Thereby, the door frame 3 which can avoid that a foreign material enters into the through-hole P2 can be manufactured. Moreover, the door frame 3 which can suppress suitably that the designability of the door frame 3 is impaired by forming the through-hole P2 in the bending part 30C of the frame member 30 can be manufactured now.

  Note that the vehicle door frame and the vehicle door frame manufacturing method according to the present invention are not limited to the configuration exemplified in the above-described embodiment, and are implemented as, for example, the following modifications appropriately. You can also.

  As described in the above embodiment, it is desirable to form the slit hole P1 after the bending process in the slit hole forming step in order to avoid the problem of the presence of the slit hole P1 during the bending process. However, when the presence of the slit hole does not become a problem at the time of bending, the slit hole forming step may form the slit hole before the bending process. In this case, a linear slit hole may be formed on the long member, and the slit hole can be easily formed.

  As in the above embodiment, forming the covering members (the outer covering portion 43 and the inner covering portion 44) covering the opening of the through hole P2 integrally with the glass run 40 increases the number of parts constituting the door frame 3. It is desirable to suppress and simplify the configuration of the door frame 3. However, the present invention is not limited to this, and the glass run and the covering member may be separate members. In this case, another effect that the conventional glass run can be used as it is can be achieved.

  As described in the above embodiment, it is desirable to provide a covering member that covers the opening of the through hole P2 in order to prevent foreign matter from entering the through hole P2. However, if this is not a problem, the covering member that covers the opening of the through hole may be omitted.

  -In above-mentioned embodiment, although this invention was applied with respect to the front door 1 of a sedan type vehicle, the application object of the door frame which concerns on this invention, and its manufacturing method is not restricted to this. In addition, for example, as shown in FIG. 8, the present invention can be applied to the rear door 301. In this case, in this case, the present invention may be applied to the bent portion 303C that connects the vertical frame portion 303A and the upper frame portion 303B. In addition, as shown in FIG. 8, in the case where the second bent portion 303D is provided near the lower end portion of the upper frame portion 303B, the present invention can be applied to the bent portion 303D. Similarly, as shown in FIG. 8, the present invention is applied to the bent portion 403D when the second bent portion 403D is provided in the vicinity of the lower end portion of the upper frame portion 403B of the front door 401. You can also In short, a long member having a hollow body portion and a flange portion extending from the hollow body portion, which is formed of a single plate material, includes a frame member having a bent portion bent with respect to the longitudinal direction. If it is.

  The shape of the flange portion 32C constituting the bending portion 30C is the shape exemplified in the above embodiment, that is, the direction in which the other flange portions 32A and 32B connected to the bending portion 30C extend (the direction of the arrow D1 in FIG. 5 or the arrow It is not limited to the shape along (D2 direction). In short, a through hole that divides the hollow main body portion and the flange portion is formed in the bent portion, and the flange portion is separated from the hollow main body portion as it approaches the center of the bent portion in the longitudinal direction. Anything can be used.

  In the above embodiment, the frame member is formed by roll molding. However, the form of the frame member is not limited to this, and the frame member can also be formed by, for example, extrusion molding.

  DESCRIPTION OF SYMBOLS 1 ... Front door, 2 ... Door main body, 3 ... Door frame, 3A ... Vertical frame part, 3B ... Upper frame part, 3C ... Bending part, 4 ... Window glass, 30 ... Frame member, 31A, 31B, 31C, 131A ... Hollow body part, 31a, 131a ... plane part, 31b, 131b ... inclined part, 31c, 131c ... parallel part, 31d, 131d ... long side part, 31e, 131e ... short side part, 31f, 131f ... inner side bent part, 31g 131g ... outer bent portion, 32A, 32B, 32C, 132A ... flange portion, 133 ... boundary portion, 40 ... glass run, 41 ... main body side mounting portion, 41a ... inner peripheral side glass holding piece, 41b ... lip portion, 42 ... Flange side mounting part, 42a ... Outer peripheral side glass holding piece, 42b ... Outer seal piece, 42c ... Inner seal piece, 43 ... Outer cover part, 44 ... Inner cover part, 130, 230 ... Long member, 1 ... slits, P2 ... through hole, RF ... bend region.

Claims (11)

A vehicular door frame comprising a frame member having an elongated member integrally formed with a hollow body portion and a flange portion extending from the hollow body portion and having a bent portion bent with respect to the longitudinal direction,
A through hole that divides the hollow main body portion and the flange portion is formed in the bent portion,
The through-hole is formed in such a manner that the flange portion is separated from the hollow main body portion as it approaches the center of the bent portion in the longitudinal direction. The vehicle door frame according to claim 1,
The frame member is formed of a single plate material. A vehicle door frame according to the present invention. The vehicle door frame according to claim 1 or 2,
The vehicle door frame characterized in that the flange portion constituting the bent portion has a shape along the direction in which the other flange portion connected to the bent portion extends. In the vehicle door frame according to any one of claims 1 to 3,
A vehicular door frame comprising a covering member that covers the opening of the through hole. The vehicle door frame according to claim 4,
The vehicular door frame is characterized in that the covering member constitutes a glass run that is provided between the frame member and the window glass and holds the window glass. A long member integrally having a hollow main body portion and a flange portion extending from the hollow main body portion, forming a frame member having a bent portion bent with respect to the longitudinal direction, and a portion serving as the bent portion A slit hole forming step that extends along the longitudinal direction before or after the bending process and forms a slit hole that divides the hollow main body part and the flange part, and
A pressing step of pressing the flange portion so that the flange portion is separated from the hollow body portion as it approaches the center of the bent portion in the longitudinal direction;
A method for manufacturing a vehicle door frame. In the manufacturing method of the door frame of Claim 6,
A method for manufacturing a vehicle door frame, comprising: a roll forming step of forming the frame member from a single plate material by roll forming. In the manufacturing method of the door frame for vehicles of Claim 6 or Claim 7,
In the pressing process, the flange part constituting the bent part is pressed into a shape along a direction in which another flange part connected to the bent part extends. A method for manufacturing a vehicle door frame. In the manufacturing method of the door frame for vehicles as described in any one of Claims 6-8,
In the slit hole forming step, the slit hole is formed before the bending process. A method for manufacturing a vehicle door frame. In the manufacturing method of the door frame for vehicles as described in any one of Claims 6-8,
In the slit hole forming step, the slit hole is formed after the bending process. A method for manufacturing a vehicle door frame. In the manufacturing method of the door frame for vehicles according to any one of claims 6 to 10,
The manufacturing method of the vehicle door frame characterized by further including the attachment process which attaches the coating | coated member which covers the opening of the through-hole deform | transformed from the said slit hole to the said frame member after the said press work process.

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