Window glass for vehicle

Abstract

To provide a window glass for a vehicle which is capable of restraining rainwater or the like from being entered into the vehicle by using one seal member.SOLUTION: A window glass 100 for a vehicle comprises a stationary glass 110 which is fixed to the vehicle 10, a movable glass 120 which is capable of inserting into an opening 111 of the stationary glass 110, support members 130, 140 which support so as to make it possible to slide the movable glass 120 and a seal member 160 which seals between the movable glass 120 and the stationary glass 110. There is provided a frame body 121 on circumference of the movable glass 120. The frame body 121 includes a groove part 121a into which the seal member 160 is inserted. The seal member 160 includes a deformation cylinder part 161 and a fitting part 162 which extends from the deformation cylinder part 161 toward the groove part 121a. The fitting part 162 is a hard elastic body. The deformation cylinder part 161 is a soft elastic body. Height of an inlet port of the groove part 121a is larger than thickness of bottom of the fitting part 162.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a window glass for vehicles.

Background Art

[0002] There is known a technique in which a part of a fixed glass fixed to a vehicle is cut out to provide an opening, and a movable glass is fitted into the opening. In order to suppress rainwater or the like from entering the vehicle interior, a sealing member for sealing between the fixed glass and the movable glass may be provided.

[0003] Patent Document 1 discloses a technique in which a movable glass is fitted into an opening provided in a side window glass (fixed glass) of a one-box car, and two types of sealing members, namely a main sealing member and a sub-sealing member, are used to seal between the fixed glass and the movable glass.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the technique disclosed in Patent Document 1, by using two types of sealing members, it is possible to suppress rainwater or the like from entering the vehicle interior between the movable glass and the fixed glass. However, when two types of sealing members are used, there is a problem that the structure becomes complicated and the manufacturing cost increases.

[0006] In view of the above problems, an object of the present invention is to provide a window glass for vehicles capable of reducing the manufacturing cost of a sealing member that suppresses the entry of rainwater or the like into the vehicle interior.

Means for Solving the Problems

[0007] A vehicle window glass according to an aspect of the present disclosure includes a fixed glass having an opening and fixed to a vehicle, a movable glass configured to be fitted into the opening of the fixed glass, a support member that slidably supports the movable glass with respect to the fixed glass, and a seal member that seals between a peripheral edge of the movable glass and a peripheral edge of the opening of the fixed glass when the movable glass is fitted into the opening of the fixed glass. A frame body is provided at a peripheral edge of the movable glass. The frame body has a groove portion into which the seal member is fitted. The seal member has a deformable cylindrical portion that deforms during sealing and a fitting portion that extends from the cylindrical portion toward a bottom surface of the groove portion. The fitting portion is configured using a rigid elastic body, and the cylindrical portion is configured using a soft elastic body. A vehicle window glass, wherein a height of an entrance of the groove portion is greater than a thickness at a base of the fitting portion.

Advantages of the Invention

[0008] According to the present invention, the manufacturing cost of the seal member that suppresses the entry of rainwater or the like into the vehicle can be reduced.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Modes for Carrying Out the Invention

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. For ease of understanding, the scales of the respective parts in the drawings may be different from the actual ones. In directions such as parallel, right angle, orthogonal, horizontal, vertical, up and down, left and right, a deviation that does not impair the effects of the embodiments is allowed. The shape of the corners is not limited to a right angle and may be arcuate and rounded. Parallel, right angle, orthogonal, horizontal, and vertical may include substantially parallel, substantially right angle, substantially orthogonal, substantially horizontal, and substantially vertical. In this specification, "periphery" refers to a region having a certain width from the outer edge toward the central part or from the inner edge toward the outside. Also, in this specification, "substantially" refers to a state where a person considers it to have the same shape and the same dimensions when viewed.

[0011] FIG. 1 is a diagram showing an example of a vehicle 10 including a vehicle window glass 100 according to the present embodiment. The vehicle 10 is a one-box car and includes a sliding door 20 and a side door 30 on the side surface. The vehicle window glass 100 is provided on the sliding door 20. In the present embodiment, front and rear, left and right, and up and down correspond to the front and rear, left and right, and up and down of the vehicle 10.

[0012] As shown in FIG. 1, the vehicle 10 is provided with front openings (not shown) in the front of both left and right side surfaces. A side door 30 is attached to each front opening so as to be openable and closable. Central openings (not shown) are provided in the central parts of both left and right side surfaces of the vehicle 10. A sliding door 20 is attached to each central opening so as to be openable and closable in the front-rear direction of the vehicle 10. The example shown in FIG. 1 shows the state where the sliding door 20 is closed. The sliding door 20 is attached so as to be slidable toward the rear of the vehicle. Therefore, the sliding door 20 can be opened by sliding the sliding door 20 toward the rear of the vehicle.

[0013] The vehicle window glass 100 is attached to the sliding door 20. For example, as shown in FIG. 1, the vehicle window glass 100 may be configured to be design-continuous with a window glass 40 provided at the rear of the vehicle 10.

[0014] FIG. 2 is a view of the vehicle window glass 100 provided on the right side surface of the vehicle 10 as seen from the inside of the vehicle. FIG. 3 is a partial cross-sectional view of the vehicle window glass 100. FIG. 3 is an enlarged view of the vicinity of the support member 140 of the cross-sectional view taken along line III-III shown in FIG. 2. The vehicle window glass 100 includes a fixed glass 110, a movable glass 120, support members 130 and 140, and a seal member 160, and may further include drain covers 151, 152, and 153.

[0015] The fixed glass 110 is a rectangular glass plate and is fixed to the sliding door 20. As shown in FIG. 2, the fixed glass 110 may be, for example, horizontally long. The fixed glass 110 is provided with a small window (opening) 111. The small window 111 is a rectangular opening with rounded corners, and the upper and lower sides are substantially horizontal.

[0016] The movable glass 120 can be fitted into the opening 111 provided in the fixed glass 110 and is movable with respect to the fixed glass 110 and the sliding door 20. As shown in FIG. 2, a frame body 121 is provided at the periphery of the movable glass 120. The movable glass 120 is supported by the support members 130 and 140. The support member 130 is a member attached to the fixed glass 110 above the upper side of the opening 111. The support member 140 is a member attached to the fixed glass 110 below the lower side of the opening 111. The frame body 121 is fitted into the support members 130 and 140. The support members 130 and 140 extend substantially horizontally and the movable glass 120 can slide horizontally. In other words, the support members 130 and 140 are rails on which the movable glass 120 can slide horizontally. FIG. 2 shows a state where the movable glass 120 is disengaged from the small window 111, that is, the small window 111 is open.

[0017] As shown in FIG. 3, the vehicle window glass 100 includes a sealing member 160 that seals between the periphery of the small window 111 and the periphery of the movable glass 120 when the small window 111 is closed. The sealing member 160 is an annular member made of an elastic body. The sealing member 160 is fixed to the movable glass 120 by being fitted into a groove portion 121a provided in the frame body 121. The groove portion 121a is provided on the outer surface of the frame body 121 on the vehicle exterior side so as to go around the periphery of the frame body 121. The sealing member 160 slides with respect to the fixed glass 110 and the sliding door 20 together with the movable glass 120.

[0018] The drain covers 151, 152, 153 are attached to the lower part of the support member 140 and drain rainwater or the like that has entered the vehicle interior from between the small window 111 and the movable glass 120 to the vehicle exterior. In the example shown in FIG. 2, the case of including three drain covers 151, 152, 153 is illustrated, but the number of drain covers is not particularly limited and can be changed as appropriate.

[0019] Next, with reference to FIGS. 4 and 5, the configuration of the sealing member 160 will be described in detail. FIG. 4 is a cross-sectional view of the sealing member 160 before being fitted into the frame body 121. FIG. 5 is a cross-sectional view of the sealing member 160 in a state of being fitted into the frame body 121. As shown in FIG. 4, the sealing member 160 includes a deformed cylindrical portion 161 and a fitting portion 162, and further, a protrusion portion 163, a wall-like portion 164, etc. may be provided.

[0020] When the movable glass 120 is fitted into the small window 111, the deformed cylindrical portion 161 and the fitting portion 162 are sandwiched between the frame body 121 and the fixed glass 110 and deformed to seal the space between the frame body 121 and the fixed glass 110. The deformed cylindrical portion 161 is made of a soft elastic body. The specific gravity of the soft elastic body is preferably 0.2 or more and 0.7 or less, may be 0.3 or more and 0.6 or less, and may be 0.4 or more and 0.5 or less. The Shore A hardness of the soft elastic body is preferably 20 or more and 50 or less, may be 25 or more and 45 or less, and may be 30 or more and 40 or less. The Shore A hardness is measured in accordance with JIS K 6253 (2012). The soft elastic body is, for example, a material obtained by adding a foaming agent to ethylene propylene rubber (EPDM) or silicone rubber.

[0021] As shown in FIG. 5, the fitting portion 162 is fitted into the groove portion 121a of the frame body 121. In other words, the fitting portion 162 extends from the deformed cylindrical portion 161 toward the bottom of the groove portion 121a. The fitting portion 162 is made of a hard elastic body. The hard elastic body has a larger specific gravity and a larger Shore A hardness than the soft elastic body. The specific gravity of the hard elastic body is preferably 0.7 or more and 1.2 or less, may be 0.8 or more and 1.1 or less, and may be 0.9 or more and 1.0 or less. The Shore A hardness of the hard elastic body is preferably 50 or more and 90 or less, may be 55 or more and 85 or less, and may be 60 or more and 80 or less. The hard elastic body is, for example, ethylene propylene rubber or silicone rubber.

[0022] As shown in FIG. 5, the height A of the entrance of the groove portion 121a is larger than the thickness B at the base of the fitting portion 162. In other words, the groove portion 121a and the fitting portion 162 are designed to have a gap between the edge of the groove portion 121a and the base of the fitting portion 162.

[0023] Since the fitting portion 162 is made of a hard elastic body, it is difficult to deform when fitted into the groove portion 121a. Therefore, if the design is such that there is no gap between the edge of the groove portion 121a and the base of the fitting portion 162, it may be difficult to fit the fitting portion 162 to a predetermined position in the groove portion 121a due to dimensional variations or the like.

[0024] On the other hand, since the vehicle window glass 100 according to the present embodiment is designed to have a gap between the edge of the groove portion 121a and the base of the fitting portion 162, the fitting portion 162 can be fitted to a predetermined position of the groove portion 121a. Therefore, it is possible to suppress the displacement of the position of the deformed cylinder portion 161 caused by the fitting portion 162 not being fitted to the predetermined position of the groove portion 121a, and to ensure the sealing performance of the deformed cylinder portion 161.

[0025] Preferably, a protrusion 163 is provided at the tip in the extending direction of the fitting portion 162 (hereinafter referred to as "the tip of the fitting portion 162"). Before the fitting portion 162 is fitted into the groove portion 121a, the protrusion 163 preferably extends in a direction of 60° or more and 120° or less, may extend in a direction of 75° or more and 105° or less, or may extend in a substantially perpendicular direction with respect to the extending direction of the fitting portion 162, that is, the direction from the base of the fitting portion 162 toward the bottom surface of the groove portion 121a. The protrusion 163 is preferably formed of an elastomer that is softer than the rigid elastomer constituting the fitting portion 162. That is, the elastomer constituting the protrusion 163 has a smaller specific gravity and a smaller Shore A hardness than the rigid elastomer constituting the fitting portion 162. The protrusion 163 may be formed of the same material as the deformed cylinder portion 161 or may be formed of a different material.

[0026] As shown in FIG. 5, when the fitting portion 162 is fitted into the groove portion 121a, the protrusion 163 is crushed and sandwiched between the tip of the fitting portion 162 and the side wall of the groove portion 121a. By thus crushing the protrusion 163, the space between the tip of the fitting portion 162 and the side wall of the groove portion 121a is sealed, and the fitting portion 162 is fixed within the groove portion 121a. Therefore, it is possible to suppress the intrusion of moisture between the tip of the fitting portion 162 and the side wall of the groove portion 121a, and to suppress the displacement of the position of the fitting portion 162 after fitting.

[0027] Preferably, a wall-like portion 164 is provided at the base of the fitting portion 162 at the end closer to the movable glass 120. The wall-like portion 164 preferably extends in a direction of 20° or more and 110° or less, may extend in a direction of 45° or more and 95° or less, and may extend in a direction of 70° or more and 90° or less with respect to the direction in which the fitting portion 162 extends. The wall-like portion 164 is preferably formed using the rigid elastic body that constitutes the fitting portion 162.

[0028] Before the fitting portion 162 shown in FIG. 4 is fitted into the groove portion 121a, the distance between the wall-like portion 164 and the protrusion portion 163 is preferably 1.5 mm or more, more preferably 2.0 mm or more, from the viewpoint of ease of manufacture. The thickness of the wall-like portion 164 is preferably 1 mm or more from the viewpoint of ensuring the rigidity of the wall-like portion 164. Further, as shown in FIG. 5, the tip of the wall-like portion 164 preferably does not contact other members in a state where the fitting portion 162 is fitted into the groove portion 121a. The frame body 121 has a protruding portion 121c that protrudes toward the fixed glass 110 and forms a part of the side wall of the groove portion 121a. For example, the distance between the tip of the wall-like portion 164 and the protruding portion 121c is preferably 0.3 mm or more, more preferably 0.5 mm or more.

[0029] As shown in FIG. 5, the upper end of the wall-like portion 164 is higher in position than the upper end of the base of the fitting portion 162. Therefore, when the wall-like portion 164 is provided, more moisture can be accumulated in the upper part of the deformed cylinder portion 161 than when the wall-like portion 164 is not provided.

[0030] As shown in FIG. 5, the contact point 165 is the point where, when closing the small window 111, i.e., when fitting the movable glass 120 into the small window 111, it first contacts the fixed glass 110 within the seal member 160. The center line 121b is the extension of the center line of the groove portion 121a. The contact point 165 in a state where it is not in contact with the fixed glass 110 is preferably located on the center line 121b. Here, "located on the center line 121b" allows that the distance from the center line 121b to the contact point 165, i.e., the deviation of the contact point 165 with respect to the center line 121b, is within a predetermined range. The distance from the center line 121b to the contact point 165 is preferably 1 mm or less, and more preferably 0.5 mm or less. By designing so that the contact point 165 is located on the center line 121b, it is possible to ensure that the surface pressure distribution of the seal member 160 with respect to the fixed glass 110 during sealing is substantially constant. That is, in the process where the seal member 160 is deformed by receiving the load from the fixed glass 110, it is possible to prevent the fitting portion 162 from deviating from a predetermined position of the groove portion 121a of the frame body 121.

[0031] Further, since the groove portion 121a of the frame body 121 has a rounded curved shape at the corner of the small window 111, the seal member 160 fitted into the groove portion 121a is also curved. The center line 121b is the neutral axis of the groove portion 121a. Therefore, by designing so that the contact point 165 is located on the center line 121b, the contact point 165 can maintain a predetermined position without being affected by compression or elongation due to the curvature of the seal member 160.

[0032] In this way, the vehicle window glass 100 can suppress the intrusion of moisture from the outside using the seal member 160, that is, it can ensure sufficient watertightness. Also, compared with a vehicle window glass that uses a plurality of types of seal members, the vehicle window glass 100 has a simple structure, can reduce the manufacturing cost, and since no friction occurs due to rubbing between the seal members, the resistance when opening and closing the small window 111 is small. Further, as shown in FIG. 3, since the seal member 160 is hidden from view by the fixed glass 110 from the outside of the vehicle, the vehicle window glass 100 has excellent design.

[0033] As shown in FIG. 3, when the small window 111 is closed, a gap may occur between the movable glass 120 and the fixed glass 110. Therefore, when it rains with the small window 111 closed, rainwater enters through the gap between the movable glass 120 and the fixed glass 110 and accumulates on the upper part of the deformable cylinder portion 161. When the small window 111 is opened in this state, the deformed deformable cylinder portion 161 is opened, and the accumulated rainwater falls onto the support member 140 or the like. In order to discharge the moisture that has fallen onto the support member 140 to the outside of the vehicle, the vehicle window glass 100 preferably includes drain covers 151, 152, and 153.

[0034] FIG. 6 is a diagram showing an example of the drain cover 151. The drain cover 151 is attached on the front side of the vehicle among the three drain covers 151, 152, and 153. In the example shown in FIG. 2, the drain cover 151 is partially different in shape from the drain covers 152 and 153 in that it has a slope 151c that protrudes forward in the vehicle on the side in contact with the support member 140. The slope 151c is for facilitating the discharge of the moisture that has fallen onto the drain cover 151 so that the moisture does not accumulate inside the drain cover 151. However, the shapes of the drain covers 151, 152, and 153 are not particularly limited, and the drain cover 151 may have the same shape as the drain covers 152 and 153. The drain covers 151, 152, and 153 have equivalent functions.

[0035] The region 151a shown in FIG. 3 is a region where the adhesive is applied. The drain cover 151 is fixed to the fixed glass 110 by the adhesive applied to the region 151a. As the adhesive, a urethane adhesive is preferable.

[0036] The region 151b shown in FIG. 6 is a region where the adhesive is not applied. The adhesive is applied to both the left and right sides near the lower end of the drain cover 151. Since the adhesive is not applied to the center near the lower end of the drain cover 151, a gap through which moisture can pass is formed.

[0037] The arrow shown in Fig. 6 is the drainage path for the moisture that has fallen onto the support member 140. The moisture that has fallen onto the support member 140 flows downward along the drainage path under the influence of gravity and reaches below the sliding door 20. Below the sliding door 20, there is a drain hole (not shown). The moisture that has flowed below the sliding door 20 is discharged to the outside of the vehicle through the drain hole. In this way, the vehicle window glass 100 can discharge moisture such as rainwater that has fallen onto the support member 140 to the outside of the vehicle.

[0038] As described above, the present invention has been described with reference to the above embodiments. However, the present invention is not limited only to the configurations of the above embodiments, and of course includes various modifications, corrections, or combinations that can be made by those skilled in the art within the scope of the invention of the claims of the present patent application.

Explanation of Reference Numerals

[0039] 10 Vehicle 20 Sliding door 30 Side door 40 Window glass 100 Vehicle window glass 110 Fixed glass 111 Small window (opening) 120 Movable glass 121 Frame body 121a Groove portion 121b Center line 121c Protrusion 130, 140 Support member 151, 152, 153 Drain cover 151c Slope 160 Seal member 161 Deformed cylinder portion 162 Fitting portion 163 Protrusion 164 Wall-like portion 165 Contact point

Claims

1. A vehicle window glass comprising a fixed glass having an opening and fixed to a vehicle, a movable glass configured to be fitted into the opening of the fixed glass, a support member that slidably supports the movable glass with respect to the fixed glass, and a seal member that seals between a peripheral edge of the movable glass and a peripheral edge of the opening of the fixed glass when the movable glass is fitted into the opening of the fixed glass, A frame body is provided on a peripheral edge of the movable glass, The frame body has a groove portion into which the seal member is fitted, The seal member has a deformable cylindrical portion that can be deformed during sealing and a fitting portion that extends from the cylindrical portion toward a bottom surface of the groove portion, The fitting portion is made of a rigid elastic body, and the deformable cylindrical portion is made of a soft elastic body, The vehicle window glass, wherein a height of an entrance of the groove portion is larger than a thickness of a base of the fitting portion.

2. The rigid elastic body constituting the fitting portion has a specific gravity of 0.7 or more and 1.2 or less, and a Shore A hardness measured in accordance with JIS K 6253 (2012) of 50 or more and 90 or less, The vehicle window glass according to claim 1, wherein the soft elastic body constituting the deformable cylindrical portion has a specific gravity of 0.2 or more and 0.7 or less, and a Shore A hardness measured in accordance with JIS K 6253 (2012) of 20 or more and 50 or less.

3. A protrusion that extends in a direction of 60° or more and 120° or less with respect to a direction in which the fitting portion extends is provided at a tip of the fitting portion in a direction in which the fitting portion extends before the fitting portion is fitted into the groove portion, The vehicle window glass according to claim 1 or 2, wherein the protrusion is made of an elastic body that is softer than the rigid elastic body constituting the fitting portion.

4. A wall-like portion that extends in a direction of 20° or more and 110° or less with respect to a direction in which the fitting portion extends is provided on a movable glass side of a boundary portion between the deformable cylindrical portion and the fitting portion, The vehicle window glass according to claim 1 or 2, wherein the wall-like portion is formed using the rigid elastic body constituting the fitting portion.

5. At the tip of the fitting portion in the extending direction thereof, before the fitting portion is fitted into the groove portion, a protrusion is provided that extends in a direction of 60° or more and 120° or less with respect to the extending direction of the fitting portion. The protrusion is formed using an elastic body that is softer than the rigid elastic body constituting the fitting portion. The vehicle window glass according to claim 4, wherein the distance between the wall-like portion and the protrusion is 1.5 mm or more before the fitting portion is fitted into the groove portion.

6. The frame body has a protrusion that protrudes toward the fixed glass and forms a part of the side wall of the groove portion. The vehicle window glass according to claim 4, wherein the distance between the tip of the wall-like portion and the protrusion is 0.3 mm or more when the fitting portion is fitted into the groove portion.

7. The seal member has a contact portion that is the first portion to contact the fixed glass when the movable glass is fitted into the opening of the fixed glass. The vehicle window glass according to claim 1 or 2, wherein the contact portion is located on the extension line of the center line of the groove portion.

8. The vehicle window glass further includes a drain cover attached to the lower portion of the support member. When the movable glass is fitted into the opening of the fixed glass, the moisture accumulated in the seal member is discharged to the outside of the vehicle through the frame body and the drain cover when the movable glass is removed from the opening of the fixed glass. The vehicle window glass according to claim 1 or 2.

Images