Sealing body and mold

Abstract

Provided is a sealing body in which, when forming a mold forming part, leakage of a forming material is suppressed, an extrusion forming part is easily inserted into a cavity, and the extrusion forming part is easily demolded after mold forming. The glass guide groove (10) is provided with a glass guide groove upper edge part (15) and a corner part (20). The glass guide groove upper edge part (15) is provided with a mounting part (17). The corner part (20) is formed in a cavity (40) which is sealed by inserting the glass guide groove upper edge part (15) into the holding die (50). The holding die (50) has a second holding section (53) and a guide section (55). No protruding part (19) is arranged in the section, corresponding to the second holding part (53) and the guide part (55), of the glass guide groove upper edge part (15).

Description

Technical Field

[0001] The present invention relates to a sealing body used around a door of a vehicle, and a mold used for forming the sealing body. Background Art

[0002] Conventionally, there is known a sealing body for use around a vehicle door, wherein the die-molded part is formed by inserting an extrusion-molded part into a cavity of a die, thereby injecting a molding material into the closed cavity to form the die-molded part so that the extrusion-molded part is connected to the die-molded part.

[0003] As such a sealing body, for example, Patent Document 1 (JP2002-046476A) discloses a door glass run, which is formed by injecting rubber material and resin material into a cavity sealed by inserting the upper edge of the glass run as an extrusion molding part into a mold and forming a corner mold molding part so that the upper edge of the glass run is connected to the corner mold molding part. Summary of the invention

[0004] However, the extruded portion of the sealing body sometimes has a mounting portion with a door-shaped cross-section for clamping a portion of the vehicle body for installation. In addition, a protrusion is usually provided on the inner side of the mounting portion, which protrudes from the opposite sides of the door shape toward relative directions and engages with a portion of the vehicle body inside the mounting portion.

[0005] On the other hand, the mold forming portion of the above-mentioned sealing body is usually formed to be at least partially continuous with the mounting portion. Therefore, in order to stabilize the posture of the mounting portion during mold forming, a holding mold is often used to fill the mounting portion with a gate-shaped cross-section in the cavity to maintain the cross-sectional shape of the mounting portion inserted into the cavity.

[0006] Here, if we only focus on the forming of the molded part, we think that it is sufficient to fill the portion of the mounting part that is located in the cavity during the mold forming with the holding mold. However, if the holding mold is stopped from filling the mounting part just after reaching the outside of the cavity, the molding material will leak out of the cavity, and the so-called overlap may occur in which the leaked molding material covers the extruded molding part.

[0007] However, from the viewpoint of preventing the molding material from leaking out, when the mounting part is filled with the retaining mold even outside the cavity, the protrusion of the mounting part may hook the retaining mold, and the extrusion molding part may be difficult to demold after the mold is formed, or the protrusion may abut against the retaining mold, and the extrusion molding part may be difficult to insert into the cavity. Therefore, the operation of inserting the extrusion molding part into the cavity and the operation of demolding the extrusion molding part after the mold is formed have to be done by specific skilled people relying on intuition and skills, which leads to the problem of limited human resources and reduced production efficiency.

[0008] The present invention is completed in view of the above points, and its purpose is to provide a sealing body and a mold, which can suppress the leakage of molding material when forming the molding part of the mold, and the extrusion molding part can be easily inserted into the cavity and the extrusion molding part can be easily demolded after the mold is formed.

[0009] In order to achieve the above-mentioned purpose, in the sealing body and mold described in the present invention, the protrusion portion provided on the mounting portion of the extrusion molding portion is omitted from a specified interval from the boundary with the mold molding portion, and the shape of the retaining mold within the specified interval is formed into a shape corresponding to the mounting portion without the protrusion portion.

[0010] Specifically, the present invention is directed to a sealing body including an extrusion-molded portion and a die-molded portion, and is a sealing body around a door of a vehicle.

[0011] Moreover, the sealing body is characterized in that the above-mentioned extrusion molding part has a mounting part with a gate-shaped cross-section, and the mounting part is provided with protrusions protruding in relative directions from opposite sides of the gate shape. The above-mentioned mold forming part is formed by: by using a mold having a long retaining mold and a cavity that are embedded in the above-mentioned mounting part to hold the above-mentioned extrusion molding part, a molding material is injected into the cavity that is sealed due to the insertion of the extrusion molding part along the length direction of the retaining mold, so that at least a part of the mold forming part is continuous with the mounting part, and the above-mentioned retaining mold has: a first retaining part that fills the above-mentioned mounting part in the above-mentioned cavity to maintain the cross-sectional shape of the mounting part; a second retaining part that is continuous with the first retaining part in the length direction and fills the mounting part outside the cavity; and a guide part that is continuous with the second retaining part in the length direction and whose cross-section gradually decreases toward the opposite side of the cavity; the above-mentioned protrusion is not provided in the interval of the above-mentioned extrusion molding part corresponding to the above-mentioned second retaining part and the guide part.

[0012] According to this structure, when a mold forming part at least partially continuous with the mounting part is formed by injecting molding material into a cavity sealed by inserting the molding part, a retaining mold having a second retaining part that fills the mounting part outside the cavity is used, thereby preventing the molding material from leaking out of the cavity.

[0013] In addition, since no protrusion is provided in the section of the extrusion molding part corresponding to the second holding part and the guide part, even if the second holding part and the guide part are provided to suppress leakage of the molding material, the extrusion molding part can be easily demolded from the holding mold after mold molding.

[0014] Furthermore, since no protrusion is provided in the interval of the extrusion forming part corresponding to the second retaining part and the guide part, the second retaining part and the guide part are not tightly against the protrusion. Combined with the cross-section of the guide part gradually decreasing toward the opposite side of the cavity, the extrusion forming part can be easily inserted into the mold.

[0015] As described above, according to the sealing body of the present invention, it is possible to suppress leakage of molding material when molding the molded portion, and to easily insert the extrusion molded portion into the cavity and to easily demold the extrusion molded portion after mold molding.

[0016] In addition, in the above-mentioned sealing body, the above-mentioned extrusion molding portion is the upper edge portion of the glass run channel assembled on the upper edge portion of the window frame of the vehicle window frame, the above-mentioned mold molding portion is the corner portion connected to the rear end portion of the upper edge portion of the above-mentioned glass run channel, the above-mentioned mounting portion clamps the mounted portion protruding from the upper edge portion of the above-mentioned window frame toward the outside of the vehicle for installation, and the above-mentioned protrusion protrudes in the direction of clamping the above-mentioned mounted portion and is hooked on the hook portion arranged at intervals in the length direction of the mounted portion.

[0017] According to this structure, when the corner portion connected to the rear end portion of the upper edge portion of the glass run channel is molded, the upper edge portion of the glass run channel, which is an extruded product, can be easily inserted into the cavity, and after the mold forming, the upper edge portion of the glass run channel can be easily demolded from the holding mold.

[0018] Furthermore, in the sealing body, a section length of a section corresponding to the second holding portion and the guide portion may be 10 mm or less.

[0019] When the hook portion on which the protrusion is hooked is arranged at intervals on the installed portion protruding from the upper edge of the window frame to the outside of the vehicle, according to this structure, since the interval where the protrusion is not provided is suppressed to less than 10 mm, the possibility of the portion where the hook portion is provided and the portion where the protrusion is not provided being consistent with each other is reduced, so that the protrusion can be reliably hooked on the hook portion.

[0020] In addition, the present invention is also directed to a die for forming a die-molded portion connected to an extrusion-molded portion of a mounting portion having a door-shaped cross section and for molding a sealing body around a vehicle door.

[0021] Moreover, the mold is characterized in that it includes a long retaining mold embedded in the above-mentioned mounting portion to retain the above-mentioned extrusion molding portion, and a cavity, the above-mentioned mold molding portion is formed by injecting molding material into the above-mentioned cavity which is sealed due to the insertion of the above-mentioned extrusion molding portion along the length direction of the above-mentioned retaining mold, so that at least a portion of the mold molding portion is continuous with the above-mentioned mounting portion, and the above-mentioned retaining mold has: a first retaining portion with a cross-sectional rectangle that fills the above-mentioned mounting portion in the above-mentioned cavity to maintain the cross-sectional shape of the mounting portion; a second retaining portion that is continuous with the first retaining portion in the length direction and fills the mounting portion outside the cavity with a cross-sectional rectangle; and a guiding portion that is continuous with the second retaining portion in the length direction and whose cross-section gradually decreases toward the opposite side of the cavity.

[0022] According to this structure, when the forming part of the forming mold is formed, the installation part is filled outside the cavity by the second retaining part with a rectangular cross section, thereby preventing the forming material from leaking out of the cavity, and the installation part of the extruded forming part can be easily demolded from the second retaining part with a rectangular cross section after the mold is formed.

[0023] Furthermore, the second holding portion is formed into a simple rectangular cross-sectional shape, and combined with the guide portion having a cross-sectional shape gradually decreasing toward the opposite side of the cavity, the extrusion-molded portion can be easily inserted into the cavity.

[0024] As described above, according to the sealing body and the mold of the present invention, it is possible to suppress leakage of molding material when molding the molded portion, and to easily insert the extrusion molded portion into the cavity and to easily demold the extrusion molded portion after mold molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a diagram schematically showing a vehicle to which the glass run channel according to the embodiment of the present invention is applied. Figure 2 It is a diagram schematically showing a main part of a glass run channel. Figure 3 It is a cross-sectional view schematically illustrating the installation state of the upper edge of the glass run channel on the window frame. Figure 4 is a diagram schematically showing a holding mold, Figure 4 (a) is a stereogram, Figure 4 (b) Figure 4 (c) Figure 4 (d) and Figure 4 (e) are Figure 4 (a) Arrow cross-sectional view of line bb, line cc, line d-d and line ee. Figure 5 It is a perspective view schematically illustrating the insertion state of the mounting portion into the holding mold. Figure 6is a diagram schematically illustrating the relationship between the holding mold and the mounting portion, Figure 6 (a) is a stereogram, Figure 6 (b) Figure 6 (c) Figure 6 (d) and Figure 6 (e) are Figure 6 (a) Arrow cross-sectional view of line bb, line cc, line dd and line ee. Figure 7 1 is a diagram schematically illustrating the relationship between the retaining mold and the mounting portion of the prior art 1. Figure 7 (a) is a stereogram, Figure 7 (b) Figure 7 (c) and Figure 7 (d) are Figure 7 (a) The arrow cross-sectional view of line bb, line cc and line dd. Figure 8 Schematically showing a holding mold of prior art 2, Figure 8 (a) is a stereogram, Figure 8 (b) Figure 8 (c) Figure 8 (d) and Figure 8 (e) are Figure 8 (a) Arrow cross-sectional view of line bb, line cc, line dd and line ee. Fig. 9 Schematically illustrates the relationship between the retaining mold and the mounting portion of the prior art 2. Fig. 9 (a) is a stereogram, Fig. 9 (b) Fig. 9 (c) Fig. 9 (d) and Fig. 9 (e) are Fig. 9 (a) Arrow cross-sectional view of line bb, line cc, line d-d and line ee.

[0026] 1: vehicle, 6: window frame, 7: upper edge of window frame (mounted portion), 7d: hook portion, 10: glass run channel (sealing body), 15: upper edge of glass run channel (extruded forming portion), 17: mounting portion, 17a: upper edge portion, 19: protrusion, 20: corner portion (mold forming portion), 30: mold, 40: cavity, 50: holding mold, 51: first holding portion, 53: second holding portion, 55: guide portion. DETAILED DESCRIPTION

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

[0028] -Glass run channel- Figure 11 is a diagram schematically showing a vehicle 1 to which the glass run channel 10 according to the present embodiment is applied. Figure 2 1 is a diagram schematically showing the main part of the glass run channel 10. The window frame 6 forms the window opening of the front door 2 and functions as a sash for holding the peripheral edge of the front door glass 4. Figure 1 As shown, the glass run channel 10 is installed on the window frame 6 of the front door 2, and is a sealing body around the door of the vehicle 1, which plays the 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, and suppressing the shaking of the front door glass 4. The glass run channel 10 is particularly called a hidden type, and is assembled on the window frame 6 from the outside of the vehicle, and covers and hides the window frame upper edge 7 extending in the front-rear direction of the vehicle at the upper part of the window frame 6.

[0029] like Figure 1 As shown, the glass run channel 10 includes: a glass run channel front longitudinal edge portion 11, which is assembled on the window frame front longitudinal edge portion 8 extending in the up-down direction at the front end portion of the window frame 6; a glass run channel rear longitudinal edge portion 13, which is assembled on the window frame rear longitudinal edge portion 9 extending in the up-down direction at the rear end portion of the window frame 6; a glass run channel upper edge portion 15, which covers the window frame upper edge portion 7; and a corner portion 20, which is as shown in FIG. Figure 2 As shown by the hatched lines, it is connected to the rear end of the glass run channel upper edge portion 15 and the upper end of the glass run channel rear side vertical side portion 13.

[0030] The front longitudinal edge 11 of the glass run channel, the rear longitudinal edge 13 of the glass run channel, and the upper edge 15 of the glass run channel are extrusion-molded parts formed by extruding an elastic material and a hard resin material. The elastic material is composed of a thermoplastic elastomer (TPE) such as a styrene-based thermoplastic elastomer (TPS) and an olefin-based thermoplastic elastomer (TPO), and the hard resin material is composed of talc-containing PP (polypropylene), glass fiber-containing PP (polypropylene), etc.

[0031] On the other hand, the corner portion 20 is formed by placing the upper end of the rear longitudinal side portion 13 of the glass run channel and the rear end of the upper edge portion 15 of the glass run channel, which are pre-extruded, on the mold 30 (refer to Figure 4 ) is a mold forming part formed by injecting (injecting) elastic materials such as resin and rubber.

[0032] Thus, the glass run channel 10 of the present embodiment includes the glass run channel front vertical side portion 11 , the glass run channel rear vertical side portion 13 , and the glass run channel upper edge portion 15 as extrusion-molded portions, and the corner portion 20 as a die-molded portion.

[0033] -Installation form of the upper edge of the glass run channel on the window frame- Figure 31 is a cross-sectional view schematically illustrating the installation state of the upper edge portion 15 of the glass run channel on the window frame 6. It should be noted that, Figure 3 The arrow O in the figure indicates the outside of the vehicle, and the arrow I indicates the inside of the vehicle. Figure 3 As shown, the window frame upper edge portion 7 of the window frame 6 is formed by overlapping an inner plate 7a and an outer plate 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 is provided with a plurality of hook portions 7d, which are arranged at intervals in the length direction of the window frame upper edge portion 7.

[0034] The glass run channel upper edge portion 15 has a mounting portion 17 having a gate-shaped cross section, and the upper edge portion 17a of the mounting portion 17 is opposed to the lower edge portion 17b. The mounting portion 17 is provided with a protrusion 19 that greatly protrudes in the opposing direction from the upper edge portion 17a (opposite sides of the gate shape) toward the lower edge portion 17b. In addition, the mounting portion 17 is provided with two retaining lips 18 that slightly bulge in the opposing direction from the lower edge portion 17b toward the upper edge portion 17a. The mounting portion 17 is mounted on the window frame upper edge portion 7 by clamping the upper flange portion 7c that protrudes toward the vehicle outer side from the window frame upper edge portion 7. When the upper flange portion 7c is clamped by the mounting portion 17, the protrusion 19 that protrudes in the direction of clamping the upper flange portion 7c is hooked on the hook portion 7d of the window frame upper edge portion 7 through the engaged surface 19a that extends substantially straight in the opposing direction, and is engaged with the upper flange portion 7c.

[0035] In addition, the glass run channel upper edge portion 15 is provided with a molding lip 16 in a gate-shaped cross section, and the molding lip 16 is engaged with the lower flange portion 7e. Thus, the glass run channel upper edge portion 15 is firmly mounted (assembled) on the window frame upper edge portion 7 by the molding lip 16 engaging with the lower flange portion 7e, and the engaged surface 19a of the protrusion 19 hooking on the hook portion 7d, and the mounting portion 17 engaging with the upper flange portion 7c.

[0036] Furthermore, the glass run channel upper edge 15 is formed with a lip 15a extending upward, and when the front door 2 is closed, the lip 15a abuts against the vehicle body B to seal the front door 2 and the vehicle body B. In addition, the glass run channel upper edge 15 has lips 15b, 15c, and 15d, and the front door glass 4 that rises and abuts against the glass run channel upper edge 15 is contacted by these lips 15b, 15c, and 15d to seal the front door glass 4.

[0037] -Mold- Figure 4 Schematically showing a holding mold 50, Figure 5 1 is a perspective view schematically illustrating the insertion state of the mounting portion 17 into the holding mold 50. Figure 61 is a diagram schematically illustrating the relationship between the holding mold 50 and the mounting portion 17. Figure 4 In (a), for ease of viewing, only the retaining mold 50 and the cavity 40 in the mold 30 are shown. Figure 4 (e) and Figure 6 In (e), for ease of viewing, only the retaining mold 50, the cavity 40, and the portion dividing the cavity 40 in the mold 30 are shown. Figure 5 and Figure 6 In the figure, for ease of viewing, the retaining lip 18 is omitted and the mounting portion 17 is simplified.

[0038] like Figure 4 (a) and Figure 6 As shown in (a), the mold 30 used for forming the corner portion 20 has a long retaining mold 50 and a cavity 40. The retaining mold 50 is embedded in the mounting portion 17 of the gate-shaped cross section to retain the upper edge portion 15 of the glass run channel. Figure 5 As shown, the rear end portion of the glass run channel upper edge portion 15 held by the holding mold 50 is provided with a cutout portion 17 c , whereby a portion of the upper edge portion 17 a including the protrusion 19 is cut away.

[0039] like Figure 4 As shown in (a), the holding mold 50 includes: a first holding portion 51 located in the cavity 40; a second holding portion 53 that is continuous with the first holding portion 51 in the length direction and located outside the cavity 40; and a second holding portion 53 that is continuous with the second holding portion 53 in the length direction and located on the opposite side of the cavity than the second holding portion 53. Figure 4 (a) on the left side (hereinafter referred to as the anti-cavity side) of the mold cavity; and a general section 57 which is continuous with the guide section 55 in the length direction and is located closer to the anti-cavity side than the guide section 55.

[0040] like Figure 4 As shown in (b), the conventional portion 57 is formed into a cross-sectional shape in which a first portion 57a ​​having a rectangular cross section, a second portion 57b having a trapezoidal cross section, and a third portion 57c having a rectangular cross section are sequentially connected. Figure 6 As shown in (b), the first portion 57a ​​is formed into a long and narrow rectangular cross section, and has a width substantially equal to the distance between the protrusion 19 protruding from the upper edge portion 17a and the lower edge portion 17b. The third portion 57c is formed into a rectangular cross section, and has a width substantially equal to the distance between the upper edge portion 17a and the lower edge portion 17b. The second portion 57b is formed into a trapezoidal cross section, and has 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 regular portion 57 into such a cross-sectional shape as Figure 5 As shown by the black solid arrow in FIG. 5 , when the mounting portion 17 (the upper edge portion 15 of the glass run channel) is pushed in from the side of the conventional portion 57 along the length direction of the holding mold 50, as shown in FIG. Figure 6 As shown in (b), the normal portion 57 is smoothly inserted into the inner side of the mounting portion 17 having a gate-shaped cross section.

[0042] The first holding portion 51 is formed in a rectangular cross-section and has a width substantially the same as the distance between the upper edge portion 17a and the lower edge portion 17b. Figure 4 As shown in (e), a cavity 40 having a gate-shaped cross section is formed between the first retaining portion 51 and the main body of the mold 30. Therefore, when the mounting portion 17 having a gate-shaped cross section, from which a portion of the upper edge portion 17a including the protrusion 19 is cut away, is pushed in from the regular portion 57 side along the length direction of the retaining mold 50, the cavity 40 having a gate-shaped cross section is sealed, and the mounting portion 17 is filled in the cavity 40 by the first retaining portion 51, thereby maintaining the cross-sectional shape of the mounting portion 17. Then, if an elastic material such as resin or rubber is injected into the sealed cavity 40, the elastic material is filled in a portion of the upper edge portion 17a that is cut away by providing the cutout portion 17c, as shown in FIG. Figure 6 As shown in (e), a portion 21 of the corner portion 20 is formed continuously with the mounting portion 17 that maintains the cross-sectional shape. The second holding portion 53 and the guide portion 55 will be described in detail later.

[0043] -Problems with the holding mold and mounting part of the prior art- Here, in order to facilitate understanding of the present embodiment, before describing the second holding portion 53 and the guide portion 55 , problems of the holding die and the mounting portion in the related art will be described.

[0044] Figure 7 1 is a perspective view schematically illustrating the relationship between the holding mold 150 and the mounting portion 117 of the prior art 1. In the holding mold 150 of the prior art 1, as in the holding mold 50 of the present embodiment, the conventional portion 157 is formed into 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 sequentially connected. Therefore, when the mounting portion 117 is pushed in along the length direction of the holding mold 150, as shown in FIG. Figure 7 As shown in (b), the regular portion 157 is smoothly inserted into the inner side of the mounting portion 117.

[0045] In addition, in the holding mold 150 of the prior art 1, since the mounting portion 117 is filled in the cavity 140 by the first holding portion 151 having a rectangular cross section, the cross-sectional shape of the mounting portion 117 is maintained. Figure 7 As shown in (d), a corner portion 121 is formed which is continuous with the mounting portion 117 which maintains the cross-sectional shape.

[0046] Here, if only the molding corner portion 121 is focused, it is considered that the first retaining portion 151 only needs to fill the portion of the mounting portion 117 that is located in the cavity 140 during the molding process. Figure 7 As shown in (a), it can also be considered that the mold forming of the corner portion 121 can be performed by using a holding mold 150 that is continuous in the length direction by using a first holding portion 151 located in the cavity 140 and a regular portion 157 located closer to the anti-cavity side than the first holding portion 151.

[0047] However, as in the holding mold 150 of the prior art 1, if the holding mold 150 is stopped when the cavity 140 is just reached, the filling of the mounting portion 117 will be Figure 7 As shown in (c), the molding material 123 may leak out of the anti-cavity side from the base of the protrusion 119 of the upper edge portion 117a, and there is a possibility that the leaked molding material 123 covers the upper edge portion of the glass run channel as the extrusion molding portion, which is called a stack.

[0048] Therefore, from the viewpoint of preventing the molding material from leaking out and suppressing the occurrence of accumulation, it is considered to fill the mounting portion with a holding mold outside the cavity. Figure 8 2 is a diagram schematically showing a retaining mold 250 of prior art 2. Fig. 9 This is a diagram schematically illustrating the relationship between the holding mold 250 and the mounting portion 217 of the prior art 2.

[0049] like Figure 8 (a) and Fig. 9 As shown in (a), the retaining mold 250 includes: a first retaining portion 251 located in the cavity 240; a second retaining portion 253 continuous with the first retaining portion 251 in the length direction and located outside the cavity 240; a guide portion 255 continuous with the second retaining portion 253 in the length direction and located closer to the anti-cavity side than the second retaining portion 253; and a regular portion 257 continuous with the guide portion 255 in the length direction and located closer to the anti-cavity side than the guide portion 255.

[0050] like Figure 8 As shown in (b), the conventional portion 257 is similar to the holding mold 50 of the present embodiment and the holding mold 150 of the prior art 1, and is formed into a cross-sectional shape 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 sequence. Fig. 9 As shown in (b), the regular portion 257 is smoothly inserted into the inner side of the mounting portion 217.

[0051] In addition, if Figure 8As shown in (e), the first retaining portion 251 is formed into a rectangular cross section and has a width substantially the same as the interval between the upper edge portion 217a and the lower edge portion 217b. Therefore, the first retaining portion 251 fills the mounting portion 217 in the cavity 240, thereby maintaining the cross-sectional shape of the mounting portion 217. Fig. 9 As shown in (e), a corner portion 221 is formed which is continuous with the mounting portion 217 which maintains the cross-sectional shape.

[0052] The second retaining portion 253 has the same shape as the inner hollow part of the mounting portion 217 so as to fill the mounting portion 217 outside the cavity 240. Figure 8 As shown in (d), the second retaining portion 253 is formed into a cross-sectional shape which is connected in sequence: a first portion 253a having a cross-sectional rectangle with a width approximately the same as the interval between the upper edge portion 217a and the lower edge portion 217b, a second portion 253b having a cross-sectional rectangle with the same width as the first portion 257a of the conventional portion 257, a third portion 253c having the same shape (cross-sectional trapezoid) as the second portion 257b of the conventional portion 257, and a fourth portion 253d having the same shape (cross-sectional rectangle) as the third portion 257c of the conventional portion 257.

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

[0054] In the holding mold 250 of the prior art 2 constructed as described above, by providing the second holding portion 253 (first portion 253a), as Fig. 9 As shown in (d), even outside the cavity 240, the mounting portion 217 is filled with the first portion 253a, so unlike the retaining mold 150 of prior art 1, leakage of the molding material from the root of the protrusion 219 of the upper edge portion 217a to the anti-cavity side is suppressed.

[0055] However, in the retaining mold 250 of prior art 2, as Fig. 9 (c) and Fig. 9As shown in (d), the protrusion 219 of the mounting portion 217 may be hooked on the first portion 253a of the second holding portion 253 and the first portion 255a of the guide portion 255, making it difficult to demold the upper edge of the glass run channel after the mold is formed. In addition, since the second holding portion 253 has the same shape as the inner hollow portion of the mounting portion 217, it is also expected that the protrusion 219 will abut against the holding mold 250, making it difficult to insert the upper edge of the glass run channel (mounting portion 217) into the cavity 240. Therefore, the operation of inserting the upper edge of the glass run channel into the cavity 240 and the operation of demolding the upper edge of the glass run channel after the mold is formed have to be performed by a specific skilled person relying on intuition and skills, which sometimes leads to restrictions on human resources and reduces production efficiency.

[0056] -Relationship between the second retaining portion, the guide portion and the protrusion portion- Therefore, in the present embodiment, the protrusion 19 provided on the glass run channel upper edge portion 15 as the extrusion molding portion is omitted in a predetermined section from the boundary with the corner portion 20 as the mold molding portion, and the shape of the holding mold 50 in the predetermined section is formed to correspond to the mounting portion 17 without the protrusion 19. Specifically, in the glass run channel 10 according to the present embodiment, in the section of the glass run channel upper edge portion 15 corresponding to the second holding portion 53 and the guide portion 55 (see Figure 6 (a)) The protrusion 19 is not provided, and in the die 30 according to the present embodiment, the second holding portion 53 is formed in a rectangular cross section.

[0057] In more detail, Figure 6 As shown in (d), the protrusion 19 is not provided in the section of the mounting portion 17 of the upper edge portion 15 of the glass run channel corresponding to the second retaining portion 53, so the inner hollow portion of the mounting portion 17 has a rectangular cross section. Figure 4 (d) and Figure 6 As shown in (d), the second retaining portion 53 is formed into a rectangular cross section and has a width substantially the same as the interval between the upper edge portion 17a and the lower edge portion 17b. That is, the second retaining portion 53 is configured to be continuous in the length direction with the first retaining portion 51 having a rectangular cross section that fills the mounting portion 17 in the cavity 40 and maintains the cross-sectional shape of the mounting portion 17, and fills the mounting portion 17 outside the cavity 40 to maintain the cross-sectional shape of the mounting portion 17.

[0058] In addition, if Figure 6As shown in FIG. 5( c ), the protrusion 19 is not provided in the section of the mounting portion 17 of the upper edge portion 15 of the glass run channel corresponding to the guide portion 55, so the inner hollow portion of the mounting portion 17 has a rectangular cross section. Thus, although it is also conceivable to set the guide portion 55 to have the same rectangular cross section as the second holding portion 53 or the same cross section as the regular portion 57, in this embodiment, in consideration of the ease of insertion of the upper edge portion 15 of the glass run channel, the guide portion 55 is configured so that the cross section gradually decreases toward the anti-cavity side.

[0059] Specifically, if Figure 4 As shown in (c), the guide portion 55 is formed into a cross-sectional shape in which a first portion 55a having a rectangular cross section, a second portion 55b having a trapezoidal cross section, and a third portion 55c having a rectangular cross section are connected in sequence. The first portion 55a is formed so as to gradually decrease toward the anti-cavity side, from the same width as the second retaining portion 53 to the same width as the first portion 57a ​​of the regular portion 57 and the same height as the first portion 57a. The third portion 55c is formed in the same shape as the third portion 57c of the regular portion 57. The second portion 55b has an upper base having the same width as the first portion 55a, a lower base having 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 19, and is formed so as to gradually increase in height toward the anti-cavity side.

[0060] It should be noted that, in the longitudinal direction of the holding mold 50, the section length of the second holding portion 53 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 of the glass run channel upper edge 15 where the protrusion 19 is not provided, that is, the section corresponding to the second holding portion 53 and the guide portion 55 is preferably 10 mm or less.

[0061] -Function and Effect- According to the present embodiment, when the corner portion 20 continuous with the mounting portion 17 is formed by injecting the molding material into the cavity 40 which is sealed by inserting the upper edge portion 15 of the glass run channel which is the extrusion molding portion, the mounting portion 17 is filled with the second retaining portion 53 outside the cavity 40, thereby preventing the molding material from leaking out of the cavity 40.

[0062] In addition, since the protrusion 19 is not provided in the section of the mounting portion 17 of the upper edge portion 15 of the glass run channel corresponding 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 suppress leakage of the molding material, the mounting portion 17 can be easily demolded from the retaining mold 50 after the mold is formed.

[0063] Furthermore, since the protrusion 19 is not provided in the section of the mounting portion 17 of the glass run channel upper edge portion 15 corresponding to the second retaining portion 53 and the guide portion 55, the second retaining portion 53 and the guide portion 55 do not abut against the protrusion 19, and combined with the cross section of the guide portion 55 gradually decreasing toward the reverse cavity side, the glass run channel upper edge portion 15 can be easily inserted into the mold 30. For example, in the retaining mold 50 of the present embodiment, the insertion force when inserting the glass run channel upper edge portion 15 into the mold 30 can be suppressed to about 40% compared with the retaining mold 250 of the prior art 2.

[0064] In addition, the hook portion 7d on which the protrusion 19 is hooked is arranged at intervals on the upper flange portion 7c protruding from the upper edge portion 7 of the window frame toward the outside of the vehicle. In the present embodiment, the interval where the protrusion 19 is not provided is suppressed to less than 10 mm, so the possibility of the portion where the hook portion 7d is provided coinciding with the portion where the protrusion 19 is not provided is reduced, thereby enabling the protrusion 19 to be reliably hooked on the hook portion 7d.

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

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

[0067] Furthermore, in the above-described embodiment, the present invention is applied to the glass run channel 10 , but the present invention is not limited thereto, and the present invention may be applied to the entire sealing body around the door of the vehicle 1 .

[0068] Therefore, the above embodiments are merely illustrative in all respects and should not be interpreted as limiting. Furthermore, modifications and changes within the equivalent scope of the claims are within the scope of the present invention.

[0069] According to the present invention, it is possible to suppress leakage of molding material when molding a mold molding portion, and it is possible to easily insert an extrusion molding portion into a mold cavity, and to easily demold the extrusion molding portion after mold molding. Therefore, it is suitable for a sealing body having an extrusion molding portion and a mold molding portion, and a mold used for molding the sealing body, and is extremely beneficial.

Claims

1. A sealing body, comprising an extrusion molding part and a die molding part, and is a sealing body around a vehicle door, characterized in that: The extrusion molding part has a mounting part with a gate-shaped cross section, and the mounting part is provided with protrusions protruding from opposite sides of the gate-shaped toward opposite directions. The die forming part is formed by using a die having a long holding die and a cavity that is embedded in the mounting part to hold the extrusion forming part, and injecting a molding material into the cavity that is sealed by inserting the extrusion forming part along the length direction of the holding die, so that at least a portion of the die forming part is continuous with the mounting part, The holding mold comprises: a first holding part that fills the mounting part in the cavity to maintain the cross-sectional shape of the mounting part; a second holding part that is continuous with the first holding part in the length direction and fills the mounting part outside the cavity; and a guide part that is continuous with the second holding part in the length direction and whose cross-sectional shape gradually decreases toward the opposite side of the cavity; The protrusion is not provided in a section of the extrusion molding portion corresponding to the second holding portion and the guide portion.

2. The sealing body according to claim 1, characterized in that The extrusion-molded portion is an upper edge portion of a glass run channel mounted on an upper edge portion of a window frame of a vehicle window frame. The mold forming portion is a corner portion connected to the rear end portion of the upper edge portion of the glass run channel, The mounting portion is mounted by clamping the mounted portion protruding from the upper edge of the window frame toward the vehicle outer side. The protrusions protrude in a direction to clamp the mounted portion, and are hooked on hooking portions that are spaced apart in the longitudinal direction of the mounted portion.

3. The sealing body according to claim 2, characterized in that: A section length of the sealing body corresponding to the second holding portion and the guide portion is 10 mm or less.

4. A die for forming a sealing body around a vehicle door connected to an extrusion forming portion of a mounting portion having a door-shaped cross section, characterized in that: The mold includes a holding mold embedded in the mounting portion to hold the elongated strip of the extrusion molding portion, and a cavity. The die forming part is formed by injecting a forming material into the cavity sealed by inserting the extrusion forming part along the length direction of the holding die so that at least a part of the die forming part is continuous with the mounting part. The retaining mold comprises: a first retaining portion with a rectangular cross-section that fills the mounting portion in the cavity to maintain the cross-sectional shape of the mounting portion; a second retaining portion that is continuous with the first retaining portion in the length direction and fills the mounting portion outside the cavity and has a rectangular cross-section; and a guide portion that is continuous with the second retaining portion in the length direction and whose cross-section gradually decreases toward the opposite side of the cavity.

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