JP2023183202A - Belt line seal structure for automobile door - Google Patents

Abstract

To make assembly workability excellent when assembling a seal material with a flange part of a belt line.SOLUTION: An outer wall part 22 of the seal material 20 is provided with seal lip parts 26a, 26b contacting glass G outward a cabin. A surface inside the cabin in the outer wall part 22 is provided with an upper engaging projection 27A and a lower engaging projection 27B contacting the surface outside the cabin of the flange part. When assembled, a guide surface 22d guiding the upper engaging project 27A to an outside surface of the cabin near an upper end part of the flange part is formed between the upper engaging projection 27A and the lower engaging projection 27B. An inclined surface 22e inclined upward to an outside of the cabin from an upper end part of the guide surface 22d is formed. The upper engaging projection 27A is composed of soft resin, projects upward to the inside of the cabin from the inclined plane 22e and is formed in a lip shape which goes thinner as it approaches the upper end.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to a belt line seal structure provided on a belt line of an automobile door, and particularly belongs to the technical field of a structure in which a sealing material is attached to a flange portion forming a belt line.

For example, the belt line seal structure for an automobile door disclosed in Patent Document 1 has a glass run provided on a wind frame that supports the peripheral edge of the window glass, and a glass run provided on the flange of the belt line separately. and a sealing material provided. Specifically, as shown in FIG. 8, the belt line flange portion 210 of the door 200 includes an outer panel 210a and an inner panel 210b, and projects upward and extends in the longitudinal direction of the vehicle. The sealing material 220 has a groove 221 that is open downward and extends in the front-rear direction, and the groove 221 is inserted into the flange portion 210 from above. A locking lip 221c that clamps the flange portion 210 in the thickness direction, an upper locking protrusion 221d, a lower locking protrusion 221e, etc. are formed on the surface 221a on the inside of the vehicle interior and the surface 221b on the outside of the vehicle interior of the groove 221, respectively. has been done. The upper locking projection 221d and the lower locking projection 221e are made of a soft material that is softer than the material that constitutes the main body portion 223 of the sealing material 220.

In the configuration shown in FIG. 8, when the groove 221 is assembled to the flange portion 210, the groove 221 of the sealing material 220 is placed above the flange portion 210 as shown by the solid line, and then the groove 221 of the sealing material 220 is placed above the flange portion 210 as shown by the phantom line. The relative positional relationship between the sealing material 220 and the flange portion 210 changes, and then, although not shown, the groove 221 is completely assembled to the flange portion 210, and the surface of the flange portion 210 and the groove 221 on the passenger compartment side 221a are substantially parallel to each other.

JP 2021-146937 Publication

By the way, since the materials of the main body portion 223 of the sealing material 220 and the upper locking projection 221d are different from each other, a material boundary exists between the main body portion 223 and the upper locking projection 221d. At the time of design, as shown in FIG. 8, the shape is set so that there is no step between the surface 221b of the main body portion 223 on the outside of the vehicle interior and the upper locking protrusion 221d. This is a configuration aimed at preventing the upper end of the flange portion 210 from getting caught on the material boundary when the groove 221 is assembled to the flange portion 210.

However, when looking at an actual extruded product, a dent may occur at the material boundary because the materials of the main body portion 223 and the upper locking protrusion 221d are different from each other. In this case, when the sealing material 220 and the flange portion 210 are in a positional relationship as shown by the imaginary lines in FIG. Installation workability deteriorates.

The present disclosure has been made in view of this point, and an object thereof is to improve assembly workability when assembling a sealing material to a flange portion of a belt line.

In order to achieve the above object, in a first aspect of the present disclosure, a sealing material that seals between the flange portion and the glass is assembled to the upwardly protruding flange portion that constitutes the belt line of the automobile door. The belt line seal structure of an automobile door can be used as a premise. The sealing material includes an inner wall portion of the flange portion located on the inside of the vehicle interior, an outer wall portion of the flange portion located on the outside of the vehicle interior, an upper end portion of the inner wall portion, and an upper end portion of the outer wall portion. and an upper wall portion connecting the two. The outer wall portion is provided with a seal lip portion that is in contact with a glass interior surface of the vehicle door and protrudes toward the outside of the vehicle interior and extends in the longitudinal direction of the vehicle. An upper locking protrusion and a lower locking protrusion that are in contact with the surface of the flange portion on the outside of the vehicle interior are provided on the upper and lower portions of the surface of the outer wall portion on the passenger compartment side, respectively. Between the upper locking protrusion and the lower locking protrusion on the interior side surface of the outer wall portion, there is a space between the upper locking protrusion and the lower locking protrusion in the direction from the cabin side of the upper locking protrusion to the proximal end of the lower locking protrusion. A guide surface is formed that extends to and guides the upper locking protrusion of the sealing member toward the outer surface of the vehicle interior near the upper end of the flange portion during assembly. An inclined surface is formed that extends from the upper end of the guide surface toward the outside of the vehicle interior, and is inclined upward toward the outside of the vehicle interior. The upper locking protrusion is made of a soft resin that is softer than the material forming the inner wall, the outer wall, and the upper wall, and projects upward from the inclined surface toward the inside of the vehicle interior. The lip shape becomes thinner toward the top.

According to this configuration, when the sealing material is assembled to the flange part of the belt line of the automobile door, the groove between the outer wall part and the inner wall part of the sealing material is assembled to the upper end of the flange part. To go. During assembly, the seal lip may come into contact with the glass, and the reaction force may cause the seal material to tilt toward the interior of the vehicle compared to its normal assembly position. In the tilted state, the upper locking protrusion of the sealing material is guided by the guide surface to the outer surface of the vehicle interior near the upper end of the flange portion, making assembly easier.

In addition, during extrusion molding of the sealing material, since the upper locking protrusion is made of a soft resin that is softer than the outer wall, a recess is formed at the boundary between the base end of the upper locking protrusion and the outer wall. Sometimes. In this case, there is a possibility that the upper end of the flange portion may get caught in the recess during assembly, but even if this happens, in this configuration, the upper locking protrusion is lip-shaped, so the sealing material By tilting it towards the inside of the vehicle, it is pushed by the upper end of the flange and elastically deforms, and the upper end of the flange is no longer caught. In addition, since the lip shape of the upper locking protrusion becomes thinner toward the upper end, it easily deforms elastically when pushed by the upper end of the flange, and the upper end of the flange becomes thinner toward the upper end. It will also be guided by the side surfaces of the room, making it easier to reach the correct assembly position.

In a second aspect of the present disclosure, the interior side surface of the upper locking protrusion may be formed to come into elastic contact with the exterior side surface of the flange portion. According to this configuration, the upper locking protrusion can be brought into close contact with the flange portion to improve sealing performance, and generation of abnormal noise from the contact portion between the sealing material and the flange portion can be suppressed.

The inclined surface according to the third aspect of the present disclosure may extend beyond the base end of the upper locking protrusion to the outside of the vehicle interior. The outer side surface of the upper locking protrusion may be formed to be separated from the outer wall, and the upper end of the upper locking protrusion may be formed to be separated from the upper wall. good.

According to this configuration, when the upper end of the flange comes into contact with the side surface of the upper locking protrusion in the vehicle interior, the upper locking protrusion is easily elastically deformed toward the outside of the vehicle interior, so that assembly workability is further improved. Become.

In a fourth aspect of the present disclosure, a concave shape that opens toward the interior of the vehicle is formed at a connection portion between the upper end of the guide surface and the lower end of the base end of the upper locking protrusion.

According to this configuration, when extruding the sealing material, due to extrusion variations, the lower end of the base end of the upper locking projection is formed closer to the passenger compartment than the upper end of the guide surface, and the upper end of the guide surface If a concave shape that opens downward is formed at the connection part between the base end of the upper locking protrusion and the lower end (not shown), the upper end of the flange part becomes easily caught. However, this problem can be prevented, and the upper end of the flange becomes less likely to get caught on the curved surface.

In a fifth aspect of the present disclosure, the seal lip portion may be made of a soft resin that is softer than the materials forming the inner wall portion, the outer wall portion, and the upper wall portion. A region surrounded by the guide surface, the inclined surface, and a boundary surface extending from an intermediate portion of the guide surface to an upper portion of the inclined surface may also be made of the soft resin.

According to this configuration, since the area composed of the soft resin is widened, the upper locking protrusion can be reliably brought into close contact with the surface of the flange on the outside of the passenger compartment, and the area where the sealing material and the flange come into contact can be The generation of abnormal noise can be further suppressed.

In a sixth aspect of the present disclosure, the inner wall portion, the outer wall portion, and the upper wall portion may be made of a hard resin that is harder than the material forming the seal lip portion.

According to this configuration, the outer wall, the inner wall, and the upper wall are made of hard resin and have appropriate rigidity, so that they are difficult to come off from the flange after being assembled to the flange. In addition, since the guide surface is made of hard resin, deformation of the guide surface is suppressed when the upper end of the flange comes into contact with the guide surface, and the guide surface moves the inner surface of the upper locking protrusion of the sealing material to the flange. It can be guided to the outside surface of the vehicle compartment near the top end.

As explained above, the guide surface that guides the upper locking protrusion toward the outside surface of the vehicle interior near the upper end of the flange portion and the inclined surface that slopes upward from the upper end of the guide surface toward the outside of the vehicle interior are located on the outside. The upper locking protrusion is formed on the wall and protrudes upward from the inclined surface toward the inside of the vehicle, and has a lip shape that becomes thinner toward the upper end. The upper end of the flange portion is less likely to get caught on the base end of the upper locking protrusion or its vicinity, making it possible to improve assembly workability.

FIG. 1 is a left side view of an automobile including an automobile door according to an embodiment. FIG. 3 is a longitudinal cross-sectional view of a belt line sealing material at an intermediate portion in the front-rear direction. It is a cross section corresponding to the III-III line in FIG. 1, and the door trim is omitted. FIG. 3 is a diagram showing the left rear door viewed from the interior of the vehicle, and illustrating the process of assembling the glass run and belt line sealing material. 5 is a sectional view taken along the line VV in FIG. 4. FIG. FIG. 6 is a view corresponding to FIG. 5 showing a state in which the upper end of the flange portion has passed the guide surface. FIG. 3 is a diagram corresponding to FIG. 2 according to a modified example. FIG. 2 is a sectional view showing a state in which a conventional belt line sealing material is being assembled to a flange portion.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Note that the following description of preferred embodiments is essentially just an example, and is not intended to limit the present invention, its applications, or its uses.

FIG. 1 is a left side view of an automobile 100 according to an embodiment of the present invention. A front door 101 and a rear door 102 are provided on both left and right sides of the automobile 100, respectively. The front door 101 and the rear door 102 are automobile doors according to the present invention, and each front end portion is rotatably attached to the vehicle body via a hinge (not shown). In this embodiment, a case where the present invention is applied to the rear door 102 will be described, but the present invention is not limited to this, and the present invention can also be applied to the front door 101. Further, the present invention can be applied to both the left and right doors 101 and 102. In the description of this embodiment, the front side of the vehicle will be simply referred to as "front", and the rear side of the vehicle will simply be referred to as "rear".

(Rear door configuration)
The rear door 102 has a door body 103 that constitutes approximately the lower half of the rear door 102, and a window frame 104 that constitutes approximately the upper half of the rear door 102, and the rear door 102 has a window glass G that can be raised and lowered. It is provided. The front end of the door body 103 is attached to the vehicle body via the hinge. A window regulator (not shown) for raising and lowering the window glass G is housed inside the door body 103.

The rear door 102 includes an inner panel (door panel) 105 (shown in FIGS. 3 to 6) made of a press molded product that forms the inside of the vehicle interior of the right rear door 102, and a press molded product that forms the outside of the vehicle interior of the rear door 102. An outer panel (door panel) 106 (the one on the left side of the vehicle is shown in FIG. 1) is provided. Inner panel 105 and outer panel 106 are made of, for example, a steel plate.

As shown in FIG. 1, the window frame 104 has a frame shape that supports the peripheral edge of the window glass G, and forms an opening 108 for the window glass. The wind frame 104 has a front frame vertical side portion 104a, a rear frame vertical side portion 104b, and a frame upper side portion 104c. The front frame vertical side portion 104a extends in the vertical direction at the front portion of the rear door 102. The rear frame vertical side portion 104b extends in the vertical direction at the rear of the rear door 102. The lower parts of the front frame vertical side part 104a and the rear frame vertical side part 104b reach the inside of the door body 103, so that when the window glass G is lowered, it can be guided to the inside of the door body 103. ing. Further, the frame upper side 104c extends from the upper end of the front frame vertical side 104a to the upper end of the rear frame vertical side 104b, and is positioned lower toward the rear in accordance with the shape of the window glass G. I'm inclined to.

The belt line 107 of the rear door 102 is a portion extending along the lower edge of the window glass opening 108. The belt line 107 may extend substantially horizontally, or may extend upwardly toward the rear, that is, with a downward slope toward the front. As shown in FIG. 3, the belt line 107 includes a flange portion 109 that projects upward. A portion of the inner panel 105 that constitutes the flange portion 109 is an inner side extending plate portion 105a that extends upward. Further, a portion of the outer panel 106 that constitutes the flange portion 109 is an outer side extending plate portion 106a that extends upward. The inner extending plate portion 105a and the outer extending plate portion 106a extend continuously in the front-rear direction from the vicinity of the front frame vertical side portion 104a to the vicinity of the rear frame vertical side portion 104b. The inner side extending plate part 105a and the outer side extending plate part 106a are joined with the interior side of the outer side extending plate part 106a superimposed on the passenger compartment outer surface of the inner side extending plate part 105a. . Therefore, the flange portion 109 has the combined thickness of the inner panel 105 and the outer panel 106. Note that the flange portion 109 may be formed of only one of the inner panel 105 and the outer panel 106. Moreover, the flange portion 109 may protrude vertically or may protrude obliquely with respect to a vertical plane. Further, although the flange portion 109 is illustrated in FIGS. 3, 5, and 6 so that the upper ends of the inner panel 105 and the outer panel 106 are at the same height, they do not have to be at the same height.

The window glass G is raised and lowered by a window regulator, and is fully closed at the uppermost position and fully opened at the lowermost position. The lowermost position is the position shown by the imaginary line in FIG. 1 and the position shown by the solid line in FIG. 4, and the window glass G is not completely accommodated inside the door body 103. That is, most of the upper end of the window glass G at the lowest end position is located above the upper end of the belt line 107 (same as the upper end of the flange portion 109 shown in FIG. 3), but The upper end of the rear portion of the glass G is located below the upper end of the belt line 107. This is due to the shape of the wind frame 104.

Further, the present invention can also be applied to a door (not shown) that is not equipped with the window frame 104.

(glass run)
As shown in FIGS. 4B to 4D, a glass run 10 is attached to the rear door 102. Note that FIG. 4 is a schematic view of the left rear door 102 viewed from the inside of the vehicle (inner panel 105 side), and (A) shows the state before the glass run 10 and the belt line sealing material 20 described later are assembled. , (B) shows the state in which the glass run 10 is assembled, (C) shows the state in the middle of assembling the belt line sealing material 20, and (D) shows the state in which the belt line sealing material 20 is assembled.

The glass run 10 is a sealing material that seals between the wind frame 104 and the window glass G, and also has the function of guiding the window glass G in the vertical direction. The glass run 10 includes a front glass run vertical side 10a extending along the front frame vertical side 104a, a rear glass run vertical side 10b extending along the rear frame vertical side 104b, and a frame top side 104c. and a glass run upper side portion 10c extending along the glass run.

(Belt line sealing material)
As shown in FIG. 3, a belt line sealing material 20 is assembled to the flange portion 109 of the rear door 102 to seal between the flange portion 109 and the window glass G. This belt line seal material 20 corresponds to the seal material of the present invention, and therefore, the rear door 102 has a belt line seal structure configured by assembling the belt line seal material 20 to the flange portion 109. .

The belt line sealing material 20 extends continuously along the flange portion 109 from the front glass run vertical side portion 10a of the glass run 10 to the rear glass run vertical side portion 10b. The belt line sealing material 20 includes an inner wall portion 21 of the flange portion 109 located on the inside of the vehicle interior, an outer wall portion 22 of the flange portion 109 located on the outside of the vehicle interior, and an upper end portion of the inner wall portion 21 and the outer wall portion. It has an upper wall part 23 that connects the upper end part of 22. The inner wall portion 21, the outer wall portion 22, and the upper wall portion 23 are integrally molded from, for example, hard resin. The hard resin can be a resin mixed with talc or glass fiber, for example, and the inner wall portion 21, outer wall portion 22, and upper wall portion 23 function as the core material of the belt line sealing material 20. As a result, even if, for example, an operator manually pulls the belt line sealing material 20 in the longitudinal direction, no dimensional change occurs in the longitudinal direction, that is, the belt line sealing material 20 has a strength that cannot be expanded or contracted in the longitudinal direction.

The distance between the inner wall portion 21 and the outer wall portion 22 in the direction of the interior and exterior of the vehicle interior is set to be sufficiently wider than the thickness of the flange portion 109. An inclined portion 21a is integrally formed on the lower portion of the inner wall portion 21 and is formed so as to be positioned closer to the interior of the vehicle as it approaches the lower end. As a result, the dimensions of the lower end of the inner wall portion 21 and the lower end of the outer wall portion 22 in the direction of the interior and exterior of the vehicle interior are expanded, so that the inner wall portion 21 and the outer wall portion 22 are separated from each other with respect to the flange portion 109 during assembly, which will be described later. This makes it easier to assemble the groove 29 between the two. An elastically deformable portion 21e is provided at the lower end of the inclined portion 21a. This elastically deformable portion 21e is arranged so as to come into contact with the inner panel 105 after the belt line sealing material 20 is assembled to the flange portion 109.

A curved lip support portion 21b is integrally formed at the upper end portion of the inner wall portion 21 so as to protrude upward. A base end portion (lower end portion) of the curved lip portion 24 is connected to the upper end portion of the curved lip support portion 21b. The curved lip portion 24 is made of an elastic material that is softer than the hard resin that constitutes the inner wall portion 21 , the outer wall portion 22 , and the upper wall portion 23 . Examples of this elastic material include soft resins, rubber, etc. Specifically, thermoplastic elastomers such as styrene-based thermoplastic elastomer (TPS), olefin-based thermoplastic elastomer (TPO), and ethylene propylene diene Examples include rubber such as rubber (EPDM), but are not limited to these. The curved lip portion 24 protrudes upward and is curved so that the closer it is to the upper end, the more it is located on the outside of the vehicle interior.

As shown in FIG. 2, an upper locking lip 25a and a lower locking lip 25b are provided on the surface of the inner wall portion 21 on the outside of the vehicle interior. That is, an upper locking lip support portion 21c and a lower locking lip support portion 21d are integrally molded on the surface of the inner wall portion 21 on the outside of the vehicle interior with an interval in the vertical direction. The base end of the upper locking lip 25a is connected to the front end of the upper locking lip support 21c, and the base end of the lower locking lip 25b is connected to the front end of the lower locking lip support 21d. There is. The upper locking lip 25a and the lower locking lip 25b protrude in the direction approaching the outer wall portion 22, and when not assembled to the flange portion 109, the upper locking lip 25a and the lower locking lip 25b protrude in the direction approaching the outer wall portion 22. The distal end portion of 25b is located near the surface of the outer wall portion 22 on the inside side of the vehicle interior. On the other hand, as shown in FIG. 3, when assembled to the flange portion 109, the thin end portions of the upper locking lip 25a and the lower locking lip 25b abut against the interior side surface of the flange portion 109 and move upward. Elastically deforms into a bent shape. The material of the upper locking lip 25a and the lower locking lip 25b is the same elastic material as the curved lip portion 24.

The outer wall portion 22 is provided with an upper seal lip portion 26a and a lower seal lip portion 26b that contact the interior surface of the window glass G so as to protrude toward the outside of the vehicle interior and extend in the front-rear direction. The upper seal lip portion 26a and the lower seal lip portion 26b are arranged with an interval in the vertical direction from each other, and the upper seal lip portion 26a is attached to the upper end of the outer wall portion 22, and the lower seal lip portion 26b is attached to the outer wall They are provided at the lower end portions of the portions 22, respectively. That is, an upper seal lip support portion 22a is integrally formed on the upper portion of the surface of the outer side wall 22 on the outside of the vehicle interior so as to protrude toward the outside of the vehicle interior. A lower seal lip support portion 22b is integrally formed on the lower portion of the surface so as to protrude toward the outside of the vehicle interior. The upper seal lip support portion 22a and the lower seal lip support portion 22b extend in the front-rear direction. The proximal end of the upper seal lip 26a is connected to the distal end of the upper seal lip support 22a, and the proximal end of the lower seal lip 26b is connected to the distal end of the lower seal lip support 22b. There is. The material of the upper seal lip portion 26a and the lower seal lip portion 26b is the same elastic material as the curved lip portion 24. In addition, flocks F are arranged at the portions of the upper seal lip portion 26a and the lower seal lip portion 26b that come into contact with the window glass G in order to allow the window glass G to move up and down smoothly.

The upper seal lip portion 26a and the lower seal lip portion 26b are formed so as to be positioned higher toward the outside of the vehicle interior. When it is not in elastic contact with the window glass G (as shown in FIG. 2), the inclination is gentler than when it is in elastic contact with the window glass G (as shown in FIG. 3). That is, when the upper seal lip part 26a and the lower seal lip part 26b come into elastic contact with the window glass G, they are elastically deformed so that the inclination becomes steeper, and the reaction force of the upper seal lip part 26a and the lower seal lip part 26b at that time is acts on the entire belt line sealing material 20.

In this embodiment, the upper seal lip portion 26a and the lower seal lip portion 26b are brought into strong elastic contact with the windshield G, thereby increasing the sealing performance of the belt line sealing material 20 and preventing the outside of the vehicle. This makes it difficult for noise to enter the passenger compartment. Furthermore, since two lip portions 26a and 26b are provided to provide a double seal structure, sealing performance can also be improved by this. On the other hand, the reaction forces of the upper seal lip portion 26a and the lower seal lip portion 26b are increased.

As shown in FIG. 2, an upper locking protrusion 27A and a lower locking protrusion 27A, which come into elastic contact with the surface of the flange 109 on the outside of the passenger compartment, are provided on the upper and lower parts of the surface of the outer wall 22 on the inside of the passenger compartment, respectively. A stop projection 27B is provided. The upper locking projection 27A is located above the upper locking lip 25a.

A lower locking protrusion support portion 22c is integrally formed on the surface of the outer wall portion 22 on the interior side, spaced downward from the upper locking protrusion 27A. The base end of the lower locking protrusion 27B is connected to the distal end of the lower locking protrusion support portion 22c. As shown in FIG. 3, when assembled to the flange portion 109, the tips of the upper locking protrusion 27A and the lower locking protrusion 27B come into elastic contact with the surface of the flange portion 109 on the outside of the vehicle interior. The material of the upper locking projection 27A and the lower locking projection 27B is the same elastic material as the curved lip portion 24.

A guide surface 22d is formed on the surface of the outer wall portion 22 on the passenger compartment side between the upper locking projection 27A and the lower locking projection 27B. The guide surface 22d extends from the interior side of the upper locking protrusion 27A toward the base end of the lower locking protrusion 27B, and is formed of an inclined surface that slopes toward the outside of the vehicle as it goes downward. has been done. The guide surface 22d may be a curved surface such that the lower it goes, the more it is located on the outside of the vehicle interior.

More specifically, the upper end portion of the guide surface 22d is located closer to the vehicle interior than the vehicle interior side surface 27b of the upper locking projection 27A. The lower end of the guide surface 22d extends to the vicinity of the base end of the lower locking protrusion support 22c or to the intermediate portion between the upper seal lip support 22a and the lower seal lip support 22b. The guide surface 22d acts as a surface that guides the upper locking protrusion 27A of the belt line seal material 20 toward the outer surface of the vehicle interior near the upper end of the flange portion 109 when the belt line seal material 20 is assembled to the flange portion 109. . Since the guide surface 22d is a part of the surface of the outer wall portion 22 made of hard resin, it is a surface that is not easily deformed even if the upper end portion of the flange portion 109 comes into contact with it.

On the surface of the outer wall portion 22 on the outside of the vehicle interior, a thinned portion 28 is formed near the base end portion of the upper seal lip support portion 22a. In this embodiment, the flesh-stealing portion 28 is constituted by a recessed portion formed in the surface of the outer wall portion 22 on the outside of the vehicle interior. The thinned-out portion 28 is formed near the base end of the upper seal lip support portion 22a, and is continuous from the front end to the rear end of the outer wall portion 22. The meat stealing portion 28 becomes deeper toward the upper side. Specifically, the upper seal lip support portion 22a is deepest near the proximal end, and conversely becomes shallower near the proximal end. A portion of the interior side surface of the flesh-stealing portion 28 located at the same height as the guide surface 22d is a parallel surface 28a extending parallel to the guide surface 22d.

That is, if the guide surface 22d is formed, the wall thickness of the outer wall portion 22 increases as it goes upward, and there is a risk that the rigidity will become too high. Rigidity can be reduced appropriately. In particular, by providing the parallel surfaces 28a, the thickness of the outer wall portion 22 becomes constant within a predetermined range in the vertical direction. In other words, it is possible to avoid thickening of the outer wall portion 22 due to the formation of the guide surface 22d.

Furthermore, a chamfered portion 28b is formed on the upper surface of the thinned-out portion 28 to connect the parallel surface 28a and the vicinity of the base end of the upper seal lip support portion 22a. More specifically, the chamfered portion 28b ( Chamfered R section) is set. By doing so, in the outer wall portion 22, the chamfered portion 28b (chamfered R portion) becomes a portion with high rigidity, whereas the parallel surface 28a, which is the portion immediately below it, becomes a portion with low rigidity. With this configuration, it is possible to set a part where the rigidity suddenly changes, and the entire belt line sealing material 20 becomes easier to twist around this part where the rigidity suddenly changes, making it possible to further improve the ease of assembly. Become.

An inclined surface 22e is formed on the surface of the outer wall portion 22 on the inside of the vehicle interior, and extends from the upper end of the guide surface 22d toward the outside of the vehicle interior, and is inclined upward toward the outside of the vehicle interior. . The upper locking projection 27A is made of the above-mentioned soft resin, and has a lip shape that projects upward from the inclined surface 22e toward the inside of the vehicle interior and becomes thinner toward the upper end.

The upper portion of the inclined surface 22e extends to the outside of the vehicle compartment from the base end of the upper locking projection 27A. Further, the lower portion of the inclined surface 22e extends further toward the inside of the vehicle than the base end of the upper locking projection 27A. That is, the dimension of the base end of the upper locking projection 27A in the vehicle width direction is set shorter than the dimension from the lower end to the upper end of the inclined surface 22e.

The exterior side surface 27a of the upper locking projection 27A and the interior side surface 27b of the vehicle interior are formed so as to be positioned closer to the vehicle interior as they go toward the upper end. Further, since the upper locking projection 27A has a lip shape as described above, the outer side surface 27a and the inner side surface 27b of the upper locking projection 27A are formed so as to approach each other toward the upper end. It is continuous at part 27c.

Further, as shown in FIG. 3, when the belt line sealing material 20 is assembled to the flange portion 109, the upper locking protrusion 27A is arranged such that the interior surface 27b of the upper locking projection 27A comes into elastic contact with the exterior surface of the flange portion 109. A vehicle interior side surface 27b is formed. As a result, a wide range of the interior side surface 27b of the upper locking protrusion 27A can be brought into close contact with the exterior surface of the vehicle interior of the flange portion 109, so that sealing performance is improved, and the hard resin guide surface 22d and the curved surface described later 22f is less likely to come into direct contact with the flange portion 109, making it possible to further suppress the generation of abnormal noise.

Further, as shown in FIG. 2, the outer side surface 27a of the upper locking protrusion 27A is formed away from the outer wall 22. As shown in FIG. Specifically, the exterior side surface 27a of the upper locking protrusion 27A is formed so as to be separated from the interior surface of the outer wall portion 22 toward the interior side of the vehicle interior. Therefore, the outer side surface 27a of the upper locking protrusion 27A and the inner surface of the outer wall 22 face each other while being separated from each other in the direction toward the outside of the vehicle interior. A space S is formed between the outer wall portion 22 and the interior surface of the vehicle interior. As a result, as shown in FIG. 3, when the upper locking projection 27A bends and deforms toward the outside of the vehicle interior, the exterior surface 27a of the upper locking projection 27A becomes less likely to interfere with the interior surface of the outer wall 22. , it can be easily bent and deformed.

Furthermore, as shown in FIG. 2, the upper end portion 27c of the upper locking projection 27A is spaced downward from the lower surface of the upper wall portion 23. As a result, as shown in FIG. 3, when the upper locking protrusion 27A bends and deforms toward the outside of the vehicle interior, the upper end 27c of the upper locking protrusion 27A becomes difficult to interfere with the lower surface of the upper wall 23, and can be easily It becomes possible to bend and deform.

A chamfered shape consisting of a curved surface 22f is provided at the connection portion between the guide surface 22d and the inclined surface 22e. That is, the curved surface 22f extends from the upper end of the guide surface 22d to the lower end of the inclined surface 22e, and the formation of the curved surface 22f suppresses the formation of an edge shape between the guide surface 22d and the inclined surface 22e. be done. Further, the lower end of the proximal end of the upper locking projection 27A is positioned at the upper end of the curved surface 22f.

With such a targeted shape, when extruding the belt line sealing material 20, due to extrusion variations, the lower end of the base end of the upper locking protrusion 27A will be closer to the inside of the vehicle than the upper end of the guide surface 22d. In the case where a concave shape opening downward is formed at the connection portion between the upper end of the guide surface 22d and the lower end of the base end of the upper locking projection 27A (not shown). Although the upper end of the flange portion 109 is likely to get caught, this problem can be prevented, and the upper end of the flange portion 109 is less likely to get caught on the curved surface 22f.

(Assembling method)
Next, a method of assembling the belt line seal material 20 configured as described above will be described. Before the glass run 10 and the belt line sealing material 20 are assembled, the state is shown in FIG. It is located above the belt line 107, and only the rear part is located below the belt line 107.

First, as shown in FIG. 4(B), the glass run 10 is assembled to the wind frame 104. Thereafter, as shown in (C), the belt line sealing material 20 is assembled. At this time, since the belt line sealing material 20 is a long and highly rigid member, it is almost impossible to bend it in the vertical direction of the vehicle, and it is difficult to assemble the front and rear sides at the same time. (C) As shown in , the front side of the belt line sealing material 20 is assembled before the rear side. For this reason, the belt line seal material 20 is tilted so that the front side is located lower than the rear side, and then the flange portion 109 is inserted between the outer wall portion 22 and the inner wall portion 21 on the front side of the belt line seal material 20. I'm going to assemble it. At this time, the belt line seal material 20 is still hardly restrained by the flange portion 109, so the belt line seal material 20 has a high degree of freedom in posture and is easy to assemble. Further, since the guide surface 22d is formed on the surface of the outer wall portion 22 of the belt line sealing material 20 on the passenger compartment side, the upper locking protrusion 27A of the sealing material 20 is attached to the upper end of the flange portion 109 during assembly. It exhibits the effect of guiding it to the nearby outer surface of the vehicle interior, which also makes it easier to assemble.

The cross section taken along the line AA in FIG. It is almost the same as FIG. 3, which shows the cross section taken along line III-III in FIG. 1.

On the other hand, a cross section taken along the line VV, which is a rear cross section in FIG. 4C, is as shown in FIG. That is, since the front side of the belt line seal material 20 has already been assembled to the flange portion 109, the front side of the belt line seal material 20 is restrained by the flange portion 109, and the upper seal lip portion 26a and the lower side The seal lip portion 26b comes into elastic contact with the window glass G, and the reaction force at that time acts in the direction shown by an arrow 300 in FIG. This is due to the fact that the window glass G is not completely lowered. As a result, the rear side of the belt line sealing material 20 may be inclined toward the interior of the vehicle with respect to the normal assembly position.

In this state, a thin portion 28 is formed on the surface of the outer wall 22 of the belt line sealing material 20 on the outside of the vehicle interior, and the rigidity of the outer wall 22 is reduced. It becomes possible to easily twist and deform the belt line seal material 20 so as to correct the inclination of the line seal material 20 in the direction opposite to the direction indicated by the arrow 300. However, it is difficult to completely correct the inclination of the belt line sealing material 20, and there are cases where the inclination of the belt line sealing material 20 can only be corrected to the extent shown in FIG. In this case, as shown in FIG. 6, when the rear side of the belt line seal material 20 is further lowered, the upper end of the flange portion 109 comes into contact with the guide surface 22d of the belt line seal material 20 and is sealed by the guide surface 22d. The upper locking projection 27A of the member 20 is guided to the outer surface of the vehicle interior near the upper end of the flange portion 109, and as a result, the upper end of the flange portion 109 reaches near the base end of the upper locking projection 27A.

During extrusion molding of the belt line sealing material 20, since the upper locking protrusion 27A is made of a soft resin that is softer than the outer wall 22, the lower end of the proximal end of the upper locking protrusion 27A and the outer wall 22 are A recess that opens toward the interior of the vehicle may be formed at the connection portion with the upper end of the guide surface 22d. In this case, there is a possibility that the upper end of the flange portion 109 gets caught in the recess opening toward the interior of the vehicle during the assembly process, but even if this happens, in this embodiment, the upper locking protrusion Since 27A has a lip shape and a space S is formed between the upper locking projection 27A and the outer wall portion 22, the flange portion 109 can be removed by tilting the belt line sealing material 20 toward the inside of the vehicle. It is pushed by the upper end of and deforms elastically. As a result, the upper end of the flange portion 109 is no longer caught. In addition, since the lip shape of the upper locking projection 27A becomes thinner toward the upper end, when the upper locking projection 27A is pushed toward the outside of the vehicle interior by the upper end of the flange portion 109, it becomes easy to elastically deform. The upper end of the flange portion 109 is also guided by the interior side surface 27b of the upper locking projection 27A, making it easier to reach the proper assembly position. Therefore, it becomes easier to assemble the rear side of the belt line sealing material 20 as well.

After the belt line sealing material 20 is assembled, as shown in FIG. 109, the assembly position of the belt line seal material 20 is stabilized.

In addition, regarding the assembly of the belt line seal material 20, for example, the rear side of the belt line seal material 20 may be assembled before the front side. Further, although not shown, the belt line sealing material for the front door 101 can be assembled in the same manner.

(Modified example)
FIG. 7 shows a modification of the embodiment. In the modification shown in FIG. 7, a boundary surface 22g is formed that extends from the vertically intermediate portion of the guide surface 22d to the upper portion of the inclined surface 22e. The boundary surface 22g extends in the vertical direction. Not only the upper locking projection 27A but also the area surrounded by the guide surface 22d, the inclined surface 22e, and the boundary surface 22g are made of soft resin. In the case of this modification, not only the upper locking projection 27A but also a wide area near the base end of the upper locking projection 27A can be made of soft resin, so that the upper locking projection 27A is attached to the surface of the flange portion 109 on the outside of the vehicle interior. Not only can the sealing material 20 and the flange portion 109 be brought into close contact with each other, but also the generation of abnormal noise from the contact portion between the sealing material 20 and the flange portion 109 can be further suppressed.

(Operations and effects of embodiments)
As described above, according to the belt line seal structure for an automobile door according to this embodiment, the guide guide guides the upper locking protrusion 27A of the belt line seal material 20 to the outer surface of the vehicle interior near the upper end of the flange portion 109. A surface 22d is formed on the outer wall portion 22, and an inclined surface 22e that slopes upward from the upper end of the guide surface 22d toward the outside of the vehicle interior is formed on the outer wall portion 22. The upper locking protrusion 27A projects upward from the inclined surface 22e toward the interior of the vehicle, and has a lip shape that becomes thinner toward the upper end. The upper end portion of the flange portion 109 is less likely to be caught on the base end of the upper locking protrusion 27A or its vicinity, making it possible to improve assembly workability.

The embodiments described above are merely illustrative in all respects and should not be interpreted in a limiting manner. Furthermore, all modifications and changes that come within the scope of equivalents of the claims are intended to be within the scope of the present invention.

As explained above, the belt line seal structure for an automobile door according to the present invention can be applied, for example, when separately assembling a glass run and a belt line seal material to a door disposed on the side of an automobile. can.

10 Glass run 20 Belt line sealing material 21 Inner wall 22 Outer wall 22d Guide surface 22e Inclined surface 22g Boundary surface 23 Upper wall 26a Upper seal lip 26b Lower seal lip 27A Upper locking protrusion 27B Lower locking Protrusion 29 Groove 107 Belt line 109 Flange part G Wind glass

Claims (6)

A belt line seal structure for an automobile door in which a sealing material for sealing between the flange portion and the glass is assembled to an upwardly protruding flange portion constituting the belt line of the automobile door,
The sealing material includes an inner wall portion of the flange portion located on the inside of the vehicle interior, an outer wall portion of the flange portion located on the outside of the vehicle interior, an upper end portion of the inner wall portion, and an upper end portion of the outer wall portion. and an upper wall portion connecting the
The outer wall portion is provided with a seal lip portion that is in contact with a glass interior surface of the vehicle door and protrudes toward the outside of the vehicle interior and extends in the longitudinal direction of the vehicle,
An upper locking protrusion and a lower locking protrusion that are in contact with a surface of the flange portion on the outside of the vehicle interior are provided on an upper portion and a lower portion of the surface of the outer wall portion on the passenger compartment side, respectively;
Between the upper locking protrusion and the lower locking protrusion on the interior side surface of the outer wall portion, there is a space between the upper locking protrusion and the lower locking protrusion in the direction from the cabin side of the upper locking protrusion to the proximal end of the lower locking protrusion. a guide surface is formed that extends to the outer surface of the vehicle interior near the upper end of the flange portion during assembly, and guides the upper locking protrusion of the sealing member toward the outer surface of the vehicle interior near the upper end of the flange portion;
An inclined surface is formed that extends from the upper end of the guide surface toward the outside of the vehicle interior, and slopes upward toward the outside of the vehicle interior,
The upper locking protrusion is made of a soft resin that is softer than the material forming the inner wall, the outer wall, and the upper wall, and projects upward from the inclined surface toward the inside of the vehicle interior. , a belt line seal structure for an automobile door, characterized by a lip shape that becomes thinner toward the upper end. The belt line seal structure for an automobile door according to claim 1,
A belt line seal structure for an automobile door, wherein an interior side surface of the upper locking protrusion is formed to come into elastic contact with an exterior side surface of the flange. The belt line seal structure for an automobile door according to claim 1 or 2,
The inclined surface extends beyond the base end of the upper locking protrusion to the outside of the vehicle interior,
The outer surface of the vehicle interior of the upper locking protrusion is formed to be separated from the outer wall, and the upper end of the upper locking protrusion is formed to be separated from the upper wall. belt line seal structure for automobile doors. The belt line seal structure for an automobile door according to claim 1,
A belt line seal for an automobile door, characterized in that a concave shape that opens toward the interior of a vehicle is formed at a connection portion between the upper end of the guide surface and the lower end of the base end of the upper locking projection. structure. The belt line seal structure for an automobile door according to claim 4,
The seal lip part is made of a soft resin that is softer than the material forming the inner wall part, the outer wall part, and the upper wall part,
An automobile door characterized in that a region surrounded by the guide surface, the inclined surface, and a boundary surface extending from a middle part of the guide surface to an upper part of the inclined surface is also made of the soft resin. Belt line seal structure. The belt line seal structure for an automobile door according to claim 1,
A belt line seal structure for an automobile door, wherein the inner wall part, the outer wall part, and the upper wall part are made of a hard resin that is harder than a material forming the seal lip part.