Seal body and metal mold

Abstract

To provide a seal body which enables easy insertion of an extrusion molding part into a cavity and easy removal of the extrusion molding part from a mold after molding while inhibiting leakage of a mold material when a molding part is molded.SOLUTION: A glass run 10 has a glass run upper side part 15 serving as an extrusion molding part and a corner part 20 serving as a molding part. The glass run upper side part 15 has an attachment part 17 provided with a projection part 19. The corner part 20 is molded by injecting a molding material into a cavity 40 which is sealed by inserting the glass run upper side part 15 into a long holding mold 50, configured to hold the glass run upper side part 15, along its longitudinal direction. The holding mold 50 has: a second holding part 53 which fills the inside of the attachment part 17 at the outside of the cavity 40; and a guide part 55 whose cross section gradually becomes smaller towards the opposite side of the cavity. The projection part 19 is not provided in sections of the glass run upper side part 15 which correspond to the second holding part 53 and the guide part 55.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] The present invention relates to a seal body used around a vehicle door and a mold used for molding the seal body. [Background technology]

[0002] A sealing body used around vehicle doors has been conventionally known in which an extrusion molded portion is connected to a molded portion by inserting the extrusion molded portion into a cavity of a mold and then injecting molding material into the sealed cavity to form the molded portion.

[0003] As an example of such a sealing body, Patent Document 1 discloses a door glass run in which the upper edge of the glass run, which serves as an extrusion molded part, is inserted into a mold to create a sealed cavity, and a rubber material or resin material is then injected into the mold to form a corner molded part, thereby connecting the upper edge of the glass run and a corner molded part. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2002-046476 A Summary of the Invention [Problem to be solved by the invention]

[0005] Incidentally, some of the extrusion molded portions in the above-mentioned sealing bodies have a mounting portion that is U-shaped in cross section and is attached so as to sandwich a part of the vehicle body. Furthermore, the inside of such mounting portion often has protrusions that protrude in opposing directions from opposing sides of the U-shape and engage with part of the vehicle body within the mounting portion.

[0006] On the other hand, since the molded portion of the above-mentioned seal body is usually molded so that at least a portion of it is continuous with the mounting portion, in order to stabilize the posture, etc. of the mounting portion during molding, the cross-sectional shape of the mounting portion inserted into the cavity is often maintained by filling the mounting portion, which has a U-shaped cross section, with a retaining mold within the cavity.

[0007] Here, if we focus only on molding the molded part, it may seem that it is sufficient to fill only the part of the attachment part that is located inside the cavity during molding with the retaining die. However, if filling the attachment part with the retaining die is stopped as soon as it comes out of the cavity, the molding material may leak out of the cavity, and the leaked molding material may cover the extrusion molded part, which is called overlap.

[0008] However, if the mounting part is filled with the retaining mold even outside the cavity from the viewpoint of preventing leakage of the molding material, the protrusion of the mounting part may get caught on the retaining mold, making it difficult to remove the extrusion molded part after molding, or the protrusion may come into contact with the retaining mold, making it difficult to insert the extrusion molded part into the cavity. Therefore, the work of inserting the extrusion molded part into the cavity and the work of removing the extrusion molded part after molding have to be done by a specific skilled worker, relying on his / her intuition and knack, which leads to restrictions on human resources and ultimately to a decrease in production efficiency.

[0009] The present invention has been made in consideration of these points, and its object is to provide a sealing body and a mold that, when molding a molded portion, prevents leakage of molding material while facilitating insertion of an extrusion molded portion into a cavity, and allows the extrusion molded portion to be easily removed from the mold after molding. [Means for solving the problem]

[0010] In order to achieve the above-mentioned objective, in the sealing body and mold of the present invention, the protrusion portion provided on the mounting portion of the extrusion molded portion is omitted for a specified section from the boundary with the molded portion, and the shape of the retaining mold in that specified section is formed into a shape that corresponds to the mounting portion without the protrusion portion.

[0011] Specifically, the present invention is directed to a seal around a vehicle door, which seal includes an extrusion portion and a molded portion.

[0012] The seal body has an extrusion molded portion having a U-shaped mounting portion in cross section with protrusions protruding in opposing directions from opposing sides of the U-shape, and the molded portion is molded so that at least a portion of it is continuous with the mounting portion by using a die having a long retaining mold that holds the extrusion molded portion so as to fit into the mounting portion and a cavity, and injecting molding material into the cavity which is sealed by inserting the extrusion molded portion along the longitudinal direction of the retaining mold, and the retaining mold has a first retaining portion that fills the mounting portion within the cavity and holds the cross-sectional shape of the mounting portion, a second retaining portion that is longitudinally continuous with the first retaining portion and fills the mounting portion outside the cavity, and a guide portion that is longitudinally continuous with the second retaining portion and has a cross-section that gradually becomes smaller toward the anti-cavity side, and the extrusion molded portion is not provided in a section corresponding to the second retaining portion and the guide portion.

[0013] According to this configuration, when molding a molded part at least a portion of which is continuous with the mounting part by injecting molding material into the cavity that is sealed by inserting the extrusion molding part, a retaining mold is used that has a second retaining part that fills the mounting part outside the cavity, so that leakage of the molding material outside the cavity can be suppressed.

[0014] Furthermore, since no protrusions are provided in the sections of the extrusion molding part corresponding to the second retaining part and the guide part, even if a second retaining part or a guide part is provided to prevent leakage of the molding material, the extrusion molding part can be easily removed from the retaining mold after molding.

[0015] Furthermore, since no protrusions are provided in the sections of the extrusion molding portion corresponding to the second holding portion and the guide portion, the second holding portion and the guide portion do not come into contact with the protrusions, and this, combined with the cross-section of the guide portion gradually becoming smaller toward the anti-cavity side, makes it possible to easily insert the extrusion molding portion into the mold.

[0016] As described above, the sealing body of the present invention makes it possible to suppress leakage of molding material when molding a molded portion, while facilitating insertion of the extrusion molded portion into a cavity and removal of the extrusion molded portion after molding.

[0017] Furthermore, in the above-mentioned sealing body, the extrusion molded portion is a glass run upper edge portion that is attached to the frame upper edge portion of the vehicle's windshield frame, the molded portion is a corner portion that is connected to the rear end portion of the glass run upper edge portion, the mounting portion is attached so as to clamp the mounting portion that protrudes from the frame upper edge portion to the outside of the vehicle, and the protrusion portion protrudes in the direction of clamping the mounting portion and may be hooked onto hook portions that are provided intermittently in the longitudinal direction of the mounting portion.

[0018] With this configuration, it is possible to easily insert the upper edge portion of the glass run, which is an extrusion molded product, into the cavity when molding the corner portion connected to the rear end portion of the upper edge portion of the glass run, and it is possible to realize a glass run which allows the upper edge portion of the glass run to be easily removed from the holding mold after molding.

[0019] Furthermore, in the seal body, a section corresponding to the second holding portion and the guide portion may have a length of 10 mm or less.

[0020] The hook portions onto which the protrusions hook are provided intermittently on the mounting portion that protrudes from the upper edge of the frame toward the outside of the vehicle. With this configuration, the section where no protrusions are provided is kept to 10 mm or less, thereby reducing the possibility that the points where the hook portions are provided will coincide with the points where no protrusions are provided, and allowing the protrusions to be reliably hooked onto the hook portions.

[0021] The present invention also relates to a die for forming a molded portion to be connected to an extrusion molded portion having a mounting portion with a U-shaped cross section in a seal body around a vehicle door.

[0022] The mold comprises a long holding mold that holds the extrusion molded portion so that it fits into the mounting portion, and a cavity, and the molded portion is molded so that at least a portion of it is continuous with the mounting portion by injecting molding material into the cavity which is sealed by inserting the extrusion molded portion along the longitudinal direction of the holding mold. The holding mold is characterized in having a first holding portion with a rectangular cross-section that fills the mounting portion within the cavity and holds the cross-sectional shape of the mounting portion, a second holding portion with a rectangular cross-section that is continuous with the first holding portion in the longitudinal direction and fills the mounting portion outside the cavity, and a guide portion that is continuous with the second holding portion in the longitudinal direction and has a cross-section that gradually becomes smaller toward the anti-cavity side.

[0023] According to this configuration, when the molded portion is molded, the second retaining portion having a rectangular cross-section fills the mounting portion outside the cavity, thereby preventing the molding material from leaking out of the cavity, and after mold molding, the mounting portion of the extrusion molded portion can be easily removed from the second retaining portion having a rectangular cross-section.

[0024] Furthermore, the second retaining portion is formed with a rectangular cross-section that is not complex, and has a guide portion whose cross-section gradually becomes smaller toward the anti-cavity side, which combines to make it easy to insert the extrusion molded portion into the cavity. Effect of the Invention

[0025] As described above, the sealing body and mold of the present invention can suppress leakage of molding material when molding a molded portion, while facilitating insertion of the extrusion molded portion into a cavity and demolding of the extrusion molded portion after molding. [Brief description of the drawings]

[0026] [Figure 1]1 is a diagram illustrating a vehicle to which a glass run according to an embodiment of the present invention is applied. [Diagram 2] FIG. 2 is a diagram showing a schematic view of a main part of a glass run. [Diagram 3] 4 is a cross-sectional view illustrating a typical manner in which the upper edge portion of the glass run is attached to the window frame. FIG. [Figure 4] FIG. 13 is a schematic diagram of a retaining mold, where FIG. 13(a) is an oblique view, and FIG. 13(b), FIG. 13(c), FIG. 13(d) and FIG. 13(e) are cross-sectional views taken along the arrows bb, cc, dd and ee in FIG. 13(a), respectively. [Diagram 5] FIG. 13 is a perspective view illustrating a typical manner in which the mounting portion is inserted into the holding mold. [Figure 6] FIG. 13 is a diagram for explaining the relationship between the retaining mold and the mounting portion, where FIG. 13(a) is an oblique view, and FIG. 13(b), FIG. 13(c), FIG. 13(d) and FIG. 13(e) are cross-sectional views taken along the arrows bb, cc, dd and ee in FIG. 13(a), respectively. [Figure 7] FIG. 1 is a diagram for explaining the relationship between the holding mold and the mounting portion of Conventional 1, where FIG. 1(a) is a perspective view, and FIG. 1(b), FIG. 1(c) and FIG. 1(d) are cross-sectional views taken along the lines bb, cc and dd in FIG. 1(a), respectively. [Figure 8] FIG. 13 is a schematic diagram of a holding type of conventional type 2, where FIG. 13(a) is a perspective view, and FIG. 13(b), FIG. 13(c), FIG. 13(d) and FIG. 13(e) are cross-sectional views taken along the arrows bb, cc, dd and ee of FIG. 13(a), respectively. [Figure 9] FIG. 13 is a diagram for explaining the relationship between the holding type and the mounting portion of Conventional 2, where FIG. 13(a) is a perspective view, and FIG. 13(b), FIG. 13(c), FIG. 13(d) and FIG. 13(e) are cross-sectional views taken along the arrows bb, cc, dd and ee of FIG. 13(a), respectively. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0028] (Embodiment) -Glassland- FIG. 1 is a diagram showing a vehicle 1 to which a glass run 10 according to the present embodiment is applied, and FIG. 2 is a diagram showing a main part of the glass run 10. The window frame 6 forms a window opening of the front door 2 and functions as a sash that holds the peripheral part of the front door glass 4. As shown in FIG. 1, the glass run 10 is a seal body around the door of the vehicle 1 that is attached to the window frame 6 of the front door 2 and plays a role of watertightness and airtightness between the front door glass 4 and the window frame 6, guiding the lifting and lowering of the front door glass 4, suppressing rattling of the front door glass 4, etc. This glass run 10 is particularly called a hidden type that is attached to the window frame 6 from the outside of the vehicle and covers and hides the frame upper edge part 7 extending in the vehicle front-rear direction at the upper part of the window frame 6.

[0029] As shown in Figure 1, the glass run 10 comprises a glass run front vertical side portion 11 which is assembled to a frame front vertical side portion 8 which extends in the vertical direction at the front end of the window frame 6, a glass run rear vertical side portion 13 which is assembled to a frame rear vertical side portion 9 which extends in the vertical direction at the rear end of the window frame 6, a glass run upper side portion 15 which covers the frame upper side portion 7, and a corner portion 20 which is connected to the rear end of the glass run upper side portion 15 and the upper end of the glass run rear vertical side portion 13, as shown by hatching in Figure 2.

[0030] The front vertical side portion 11 of the glass run, the rear vertical side portion 13 and the upper side portion 15 of the glass run are extrusion molded portions formed by extruding an elastic material made of a thermoplastic elastomer (TPE) such as a styrene-based thermoplastic elastomer (TPS) or an olefin-based thermoplastic elastomer (TPO) and a hard resin material made of talc-containing PP (polypropylene) or glass fiber-containing PP (polypropylene).

[0031] In contrast, the corner portion 20 is a molded portion that is formed by setting the upper end portion of the rear vertical side portion 13 of the glass run and the rear end portion of the upper side portion 15 of the glass run, which have been previously extrusion molded, into a mold 30 (see Figure 4) and injecting (injecting) an elastic material such as resin or rubber.

[0032] Thus, the glass run 10 of this embodiment has a glass run front vertical side portion 11, a glass run rear vertical side portion 13, and a glass run upper side portion 15 as extrusion molded portions, and a corner portion 20 as a molded portion.

[0033] -How the upper edge of the glass run is attached to the window frame- Fig. 3 is a cross-sectional view for explaining a typical manner of mounting the glass run upper edge portion 15 to the window frame 6. As shown in Fig. 3, the frame upper edge portion 7 of the window frame 6 is formed by overlapping an inner panel 7a and an outer panel 7b, and has an upper flange portion 7c protruding toward the outside of the vehicle and a lower flange portion 7e protruding downward. The upper flange portion (mounted portion) 7c has hook portions 7d provided at several points intermittently in the longitudinal direction of the frame upper edge portion 7.

[0034] The glass run upper side portion 15 has a mounting portion 17 having a U-shaped cross section with an upper side portion 17a and a lower side portion 17b facing each other. The mounting portion 17 is provided with a protrusion 19 that protrudes largely in the facing direction from the upper side portion 17a (the opposing side of the U-shape) toward the lower side portion 17b. The mounting portion 17 is also provided with two retaining lips 18 that bulge slightly in the facing direction from the lower side portion 17b toward the upper side portion 17a. The mounting portion 17 is attached to the frame upper side portion 7 so as to sandwich the upper flange portion 7c that protrudes from the frame upper side portion 7 toward the outside of the vehicle. When the mounting portion 17 sandwiches the upper flange portion 7c, the protrusion 19 protruding in the direction sandwiching the upper flange portion 7c engages with the upper flange portion 7c by hooking the engaged surface 19a that extends substantially straight in the facing direction on the hook portion 7d of the frame upper side portion 7.

[0035] Furthermore, a molding lip 16 is provided on the glass run upper side portion 15 so as to have a U-shaped cross section, and the molding lip 16 is adapted to engage with the lower flange portion 7e. In this manner, the molding lip 16 engages with the lower flange portion 7e, and the engaged surface 19a of the protrusion 19 is caught by the hook portion 7d, and the mounting portion 17 engages with the upper flange portion 7c, so that the glass run upper side portion 15 is securely attached (mounted) to the frame upper side portion 7.

[0036] Furthermore, an upwardly extending lip portion 15a is formed on the glass run upper edge portion 15, and when the front door 2 is closed, the lip portion 15a comes into contact with the vehicle body B to seal between the front door 2 and the vehicle body B. The glass run upper edge portion 15 also has lip portions 15b, 15c, and 15d, and these lip portions 15b, 15c, and 15d come into contact with the front door glass 4 that has risen to come into contact with the glass run upper edge portion 15, thereby sealing the front door glass 4.

[0037] -Mold- FIG. 4 is a diagram showing the retaining mold 50, FIG. 5 is a perspective view showing the manner in which the mounting portion 17 is inserted into the retaining mold 50, and FIG. 6 is a diagram showing the relationship between the retaining mold 50 and the mounting portion 17. In FIG. 4(a), in order to make the drawing easier to see, only the retaining mold 50 and the cavity 40 of the mold 30 are shown, and in FIG. 4(e) and FIG. 6(e), in order to make the drawing easier to see, only the retaining mold 50, the cavity 40, and the portion that divides the cavity 40 of the mold 30 are shown. Furthermore, in FIG. 5 and FIG. 6, in order to make the drawing easier to see, the retaining lip 18 is omitted, and the mounting portion 17 is shown in a simplified manner.

[0038] As shown in Figures 4(a) and 6(a), the mold 30 used to mold the corner portion 20 has a long holding mold 50 that holds the glass run upper edge portion 15 so as to fit into the mounting portion 17 having a U-shaped cross section, and a cavity 40. Note that a notch 17c is provided at the rear end of the glass run upper edge portion 15 held by the holding mold 50, as shown in Figure 5, so that a part of the upper edge portion 17a including the protrusion 19 is removed.

[0039] As shown in Figure 4(a), the retaining mold 50 comprises a first retaining portion 51 located within the cavity 40, a second retaining portion 53 located outside the cavity 40 and continuous with the first retaining portion 51 in the longitudinal direction, a guide portion 55 located longitudinally continuous with the second retaining portion 53 and on the anti-cavity side of the second retaining portion 53 (left side of Figure 4(a)), and a general portion 57 located longitudinally continuous with the guide portion 55 and further on the anti-cavity side of the guide portion 55.

[0040] As shown in FIG. 4(b), the general portion 57 is formed in a cross-sectional shape in which a first portion 57a ​​having a rectangular cross-sectional shape, a second portion 57b having a trapezoidal cross-sectional shape, and a third portion 57c having a rectangular cross-sectional shape are connected in this order. More specifically, as shown in FIG. 6(b), the first portion 57a ​​is formed in a long and narrow rectangular cross-sectional shape having a width substantially equal to the distance between the protrusion 19 protruding from the upper side portion 17a and the lower side portion 17b. The third portion 57c is formed in a rectangular cross-sectional shape having a width substantially equal to the distance between the upper side portion 17a and the lower side portion 17b. The second portion 57b is formed in a trapezoidal cross-sectional shape having an upper base having the same width as the first portion 57a, a lower base having the same width as the third portion 57c, and an inclined surface 57d inclined at the same angle as the inclined surface 19b of the protrusion 19.

[0041] By forming the general portion 57 into this type of cross-sectional shape, when the mounting portion 17 (glass run upper edge portion 15) is pushed in from the general portion 57 side along the longitudinal direction of the retaining mold 50, as shown by the black arrow in Figure 5, the general portion 57 is smoothly inserted inside the mounting portion 17, which has a U-shaped cross-section, as shown in Figure 6(b).

[0042] The first holding portion 51 is formed in a rectangular cross section having a width substantially equal to the distance between the upper side portion 17a and the lower side portion 17b, and forms a U-shaped cross section cavity 40 between the main body of the mold 30 as shown in FIG. 4(e). Therefore, when the mounting portion 17 having a U-shaped cross section, in which a part of the upper side portion 17a including the protrusion portion 19 is cut off, is pushed into the holding mold 50 from the general portion 57 side along the longitudinal direction, the U-shaped cross section cavity 40 is sealed, and the inside of the mounting portion 17 is filled by the first holding portion 51 in the cavity 40, so that the cross-sectional shape of the mounting portion 17 is maintained. Then, when an elastic material such as resin or rubber is injected into the sealed cavity 40, the part of the upper side portion 17a cut off by the provision of the notch portion 17c is filled with the elastic material, and as shown in FIG. 6(e), a part 21 of the corner portion 20 is formed so as to be continuous with the mounting portion 17 whose cross-sectional shape is maintained. The second holding portion 53 and the guide portion 55 will be described in detail later.

[0043] -Problems with conventional retaining types and mounting parts- Here, in order to facilitate understanding of this embodiment, prior to describing second holding portion 53 and guide portion 55, problems with conventional holding dies and mounting portions will be described.

[0044] 7 is a perspective view for explaining the relationship between the retaining die 150 and the attachment portion 117 of Conventional 1. In Conventional 1 retaining die 150, similarly to retaining die 50 of this embodiment, general portion 157 is formed with a cross-sectional shape in which a first portion 157a having a rectangular cross section, a second portion 157b having a trapezoidal cross section, and a third portion 157c having a rectangular cross section are connected in this order, so that when attachment portion 117 is pushed in along the longitudinal direction of retaining die 150, general portion 157 is smoothly inserted inside attachment portion 117 as shown in FIG.

[0045] Also, in the retaining mold 150 of conventional type 1, the mounting portion 117 is filled in the cavity 140 by the first retaining portion 151 having a rectangular cross-section, so that the cross-sectional shape of the mounting portion 117 is maintained. As a result, a corner portion 121 is formed that is continuous with the mounting portion 117 whose cross-sectional shape is maintained, as shown in Figure 7(d).

[0046] Here, if we focus only on molding corner portion 121, it may be sufficient to fill only the portion of mounting portion 117 that is located within cavity 140 during molding with first retaining portion 151. Specifically, as shown in Fig. 7(a), it may be sufficient to mold corner portion 121 using a retaining mold 150 in which first retaining portion 151 located within cavity 140 and general portion 157 located on the opposite cavity side from first retaining portion 151 are continuous in the longitudinal direction.

[0047] However, as in the case of the retaining mold 150 of conventional example 1, if the retaining mold 150 is stopped from filling the mounting portion 117 as soon as it comes outside the cavity 140, as shown in Figure 7(c), the molding material 123 may leak to the anti-cavity side, for example from the base of the protrusion 119 on the upper edge portion 117a, and the leaked molding material 123 may cover the upper edge portion of the glass run, which is the extrusion molding portion, resulting in a so-called overlap.

[0048] Therefore, from the viewpoint of preventing leakage of molding material and suppressing occurrence of overlap, it is conceivable to fill the inside of the attachment part with a retaining mold even outside the cavity. Fig. 8 is a diagram showing a retaining mold 250 of Conventional Example 2, and Fig. 9 is a diagram explaining the relationship between the retaining mold 250 of Conventional Example 2 and the attachment part 217.

[0049] As shown in Figures 8(a) and 9(a), the retaining mold 250 comprises a first retaining portion 251 located within the cavity 240, a second retaining portion 253 located outside the cavity 240 and continuous with the first retaining portion 251 in the longitudinal direction, a guide portion 255 located longitudinally with the second retaining portion 253 and on the anti-cavity side of the second retaining portion 253, and a general portion 257 located longitudinally with the guide portion 255 and further on the anti-cavity side of the guide portion 255.

[0050] As shown in Figure 8(b), the general portion 257 is formed in a cross-sectional shape in the same manner as the retaining type 50 of this embodiment and the retaining type 150 of the conventional example 1, in which a first portion 257a having a rectangular cross-section, a second portion 257b having a trapezoidal cross-section, and a third portion 257c having a rectangular cross-section are connected in this order, thereby enabling the general portion 257 to be smoothly inserted inside the mounting portion 217, as shown in Figure 9(b).

[0051] 8(e), the first retaining portion 251 is formed in a rectangular cross-sectional shape having approximately the same width as the distance between the upper side portion 217a and the lower side portion 217b. Therefore, the inside of the mounting portion 217 in the cavity 240 is filled with the first retaining portion 251, and the cross-sectional shape of the mounting portion 217 is maintained, and thus, as shown in FIG. 9(e), a corner portion 221 is formed that is continuous with the mounting portion 217 whose cross-sectional shape is maintained.

[0052] The second holding portion 253 has a shape similar to the inner hollow portion of the mounting portion 217 so as to fill the inside of the mounting portion 217 outside the cavity 240. Specifically, as shown in Fig. 8(d), the second holding portion 253 is formed in a cross-sectional shape in which a first portion 253a having a rectangular cross section with a width substantially the same as the distance between the upper side portion 217a and the lower side portion 217b, a second portion 253b having a rectangular cross section with a width the same as the first portion 257a of the general portion 257, a third portion 253c having the same shape (trapezoidal cross section) as the second portion 257b of the general portion 257, and a fourth portion 253d having the same shape (rectangular cross section) as the third portion 257c of the general portion 257 are connected in this order.

[0053] As shown in Figure 8 (c), guide portion 255 is formed in a cross-sectional shape in which a first portion 255a with a rectangular cross-section whose width gradually decreases toward the anti-cavity side from the same width as first portion 253a of second retaining portion 253 to the same width as first portion 257a of general portion 257, a second portion 255b with the same shape (rectangular cross-section) as second portion 253b of second retaining portion 253, a third portion 255c with the same shape (trapezoidal cross-section) as second portion 257b of general portion 257 and third portion 253c of second retaining portion 253, and a fourth portion 255d with the same shape (rectangular cross-section) as third portion 257c of general portion 257 and fourth portion 253d of second retaining portion 253, are connected in this order.

[0054] In the retaining mold 250 of conventional example 2 configured as described above, by providing the second retaining portion 253 (first portion 253a), as shown in Figure 9 (c), the inside of the mounting portion 217 is filled by the first portion 253a even outside the cavity 240, so that unlike the retaining mold 150 of conventional example 1, leakage of molding material to the anti-cavity side from the base of the protrusion 219 on the upper edge portion 217a is suppressed.

[0055] However, in the holding mold 250 of the conventional 2, as shown in Fig. 9(c) and Fig. 9(d), the protrusion 219 of the mounting part 217 may get caught on the first part 253a of the second holding part 253 or the first part 255a of the guide part 255, which may make it difficult to remove the upper edge part of the glass run after molding. In addition, since the second holding part 253 has a shape similar to the inner hollow part of the mounting part 217, it is assumed that the protrusion 219 and the holding mold 250 may come into contact with each other, making it difficult to insert the upper edge part of the glass run (the mounting part 217) into the cavity 240. Therefore, the work of inserting the upper edge part of the glass run into the cavity 240 and the work of removing the upper edge part of the glass run after molding are necessarily performed by a specific skilled person, relying on intuition and tips, which may lead to restrictions on human resources and ultimately to a decrease in production efficiency.

[0056] -Relationship between the second holding portion and the guide portion and the protrusion portion- Therefore, in this embodiment, the protrusion 19 provided on the glass run upper edge portion 15, which is an extrusion molded portion, is omitted in a predetermined section from the boundary with the corner portion 20, which is a molded portion, and the shape of the holding mold 50 in the predetermined section is formed to a shape corresponding to the attachment portion 17 without the protrusion 19. Specifically, in the glass run 10 according to this embodiment, the protrusion 19 is not provided in the section (see FIG. 6(a)) of the glass run upper edge portion 15 corresponding to the second holding portion 53 and the guide portion 55, and in the mold 30 according to this embodiment, the second holding portion 53 is formed to have a rectangular cross section.

[0057] More specifically, as shown in FIG. 6(d), the protrusion 19 is not provided in the section of the mounting portion 17 of the upper side portion 15 of the glass run corresponding to the second holding portion 53, and therefore the inner space of the mounting portion 17 has a rectangular cross section. Correspondingly, the second holding portion 53 is formed in a rectangular cross section having a width substantially equal to the distance between the upper side portion 17a and the lower side portion 17b, as shown in FIG. 4(d) and FIG. 6(d). In other words, the second holding portion 53 is configured to be continuous in the longitudinal direction with the first holding portion 51 having a rectangular cross section, which fills the mounting portion 17 in the cavity 40 to hold the cross-sectional shape of the mounting portion 17, and to fill the mounting portion 17 outside the cavity 40 to hold the cross-sectional shape of the mounting portion 17.

[0058] 6(c), the section of the mounting portion 17 of the glass run upper edge portion 15 that corresponds to the guide portion 55 does not have a protrusion 19, and therefore the hollow portion of the mounting portion 17 has a rectangular cross section. In this case, it is conceivable to make the guide portion 55 have the same rectangular cross section as the second holding portion 53 or the same cross section as the general portion 57, but in this embodiment, in consideration of the ease of insertion of the glass run upper edge portion 15, the guide portion 55 is configured so that the cross section gradually becomes smaller toward the anti-cavity side.

[0059] Specifically, as shown in FIG. 4(c), the guide portion 55 is formed in a cross-sectional shape in which a first portion 55a having a rectangular cross-sectional shape, a second portion 55b having a trapezoidal cross-sectional shape, and a third portion 55c having a rectangular cross-sectional shape are connected in this order. The first portion 55a is formed so as to gradually decrease in width toward the anti-cavity side from the same width as the second holding portion 53 to the same width and height as the first portion 57a ​​of the general portion 57. The third portion 55c is formed in the same shape as the third portion 57c of the general portion 57. The second portion 55b has an upper base with the same width as the first portion 55a, a lower base with the same width as the third portion 55c, and an inclined surface 55d inclined at the same angle as the inclined surface 19b of the protrusion portion 19, and is formed so as to gradually increase in height toward the anti-cavity side.

[0060] In addition, the section length of the second holding portion 53 in the longitudinal direction of the holding mold 50 is preferably 5 mm or less, and the section length of the guide portion 55 is preferably 5 mm or less. Therefore, the section length of the section on the glass run upper side portion 15 where the protrusion portion 19 is not provided, i.e., the section corresponding to the second holding portion 53 and the guide portion 55, is preferably 10 mm or less.

[0061] -Actions and Effects- According to this embodiment, when the corner portion 20 continuing from the mounting portion 17 is molded by injecting molding material into the cavity 40 which is sealed by inserting the glass run upper edge portion 15, which is an extrusion molding portion, the inside of the mounting portion 17 is filled by the second retaining portion 53 outside the cavity 40, thereby preventing leakage of the molding material outside the cavity 40.

[0062] Furthermore, since no protrusion 19 is provided in the section of the mounting portion 17 of the upper edge portion 15 of the glass run that corresponds to the second retaining portion 53 and the guide portion 55, even if the second retaining portion 53 and the guide portion 55 are provided to prevent leakage of the molding material, the mounting portion 17 can be easily removed from the retaining mold 50 after molding.

[0063] Furthermore, since the protrusion 19 is not provided in the section of the attachment portion 17 of the glass run upper side portion 15 corresponding to the second holding portion 53 and the guide portion 55, the second holding portion 53 and the guide portion 55 do not come into contact with the protrusion 19, and the cross section of the guide portion 55 gradually becomes smaller toward the side away from the cavity, which combine to make it possible to easily insert the glass run upper side portion 15 into the mold 30. As an example, compared to the holding mold 250 of the conventional 2, the holding mold 50 of this embodiment makes it possible to reduce the insertion force required when inserting the glass run upper side portion 15 into the mold 30 to about 40%.

[0064] In addition, the hook portions 7d on which the protrusions 19 hook are provided intermittently on the upper flange portion 7c that protrudes from the frame upper edge portion 7 toward the outside of the vehicle. In this embodiment, the section where the protrusions 19 are not provided is kept to 10 mm or less, thereby reducing the possibility that the locations where the hook portions 7d are provided will coincide with the locations where the protrusions 19 are not provided, and the protrusions 19 can be reliably hooked onto the hook portions 7d.

[0065] (Other embodiments) The present invention is not limited to the embodiments, and can be embodied in various other forms without departing from the spirit or main characteristics thereof.

[0066] In the above embodiment, the present invention is applied to the glass run 10 associated with the front door glass 4 of the front door 2, but this is not limited thereto, and the present invention may also be applied to, for example, the glass run associated with the rear door glass 5 of the rear door 3.

[0067] Further, in the above embodiment, the present invention is applied to the glass run 10, but the present invention is not limited to this, and may be applied to any seal body around the door of the vehicle 1 in general.

[0068] As such, the above-described embodiment is merely illustrative in all respects and should not be construed as limiting. Furthermore, all modifications and variations within the scope of the claims are within the scope of the present invention. [Industrial Applicability]

[0069] According to the present invention, when molding a molded portion, it is possible to easily insert an extrusion molded portion into a cavity and to easily demold the extrusion molded portion after molding while suppressing leakage of molding material, and therefore the present invention is extremely useful when applied to a sealing body having an extrusion molded portion and a molded portion, and to a mold used for molding the same. [Explanation of symbols]

[0070] 1 vehicle 6 Wind Frame 7 Upper part of frame (mounting part) 7d Hook section 10 Glass run (seal body) 15 Glass run upper edge (extrusion molding part) 17 Mounting part 17a Top 19 Protrusion 20 Corner part (molded part) 30 Mold 40 Cavity 50 retention type 51 1st holding part 53 Second holding part 55 Guide part

Claims

1. A seal body around a vehicle door, comprising an extrusion portion and a molded portion, The extrusion molding portion has a mounting portion having a U-shaped cross section and protruding portions protruding in opposing directions from opposing sides of the U-shaped cross section, The molded portion is molded so that at least a portion of it is continuous with the mounting portion by using a die having a long holding mold that holds the extrusion molded portion so as to fit into the mounting portion and a cavity, and by injecting a molding material into the cavity that is sealed by inserting the extrusion molded portion along the longitudinal direction of the holding mold, The retention mold has a first retention portion that fills the mounting portion within the cavity to retain a cross-sectional shape of the mounting portion, a second retention portion that is continuous with the first retention portion in the longitudinal direction and fills the mounting portion outside the cavity, and a guide portion that is continuous with the second retention portion in the longitudinal direction and has a cross-section that gradually becomes smaller toward the opposite cavity side, A seal body, characterized in that the protrusion portion is not provided in a section of the extrusion molding portion corresponding to the second holding portion and the guide portion.

2. The seal body according to claim 1, The extrusion molded portion is a glass run upper edge portion that is attached to a frame upper edge portion of a vehicle window frame, The molded portion is a corner portion connected to the rear end portion of the upper side of the glass run, The mounting portion is attached so as to sandwich a mounting portion that protrudes from the upper side portion of the frame toward the vehicle exterior, The seal body is characterized in that the protrusion protrudes in a direction sandwiching the mounted portion and is hooked onto hook portions that are intermittently provided in the longitudinal direction of the mounted portion.

3. In the seal body according to claim 2, A seal body, characterized in that the section length of the section corresponding to the second retaining portion and the guide portion is 10 mm or less.

4. A mold for molding a molded portion to be connected to an extrusion molded portion having a U-shaped cross-section in a seal body around a vehicle door, a long retaining mold that retains the extrusion molded portion so as to fit into the mounting portion; and a cavity, the molded portion is molded so that at least a portion of the molded portion is continuous with the mounting portion by injecting a molding material into the cavity that is sealed by inserting the extrusion portion along the longitudinal direction of the holding mold, The holding mold is a mold characterized in having: a first holding portion with a rectangular cross-section that fills the mounting portion within the cavity and holds the cross-sectional shape of the mounting portion; a second holding portion with a rectangular cross-section that is continuous with the first holding portion in the longitudinal direction and fills the mounting portion outside the cavity; and a guide portion that is continuous with the second holding portion in the longitudinal direction and has a cross-section that gradually becomes smaller toward the anti-cavity side.

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