JP2012140832A - Window glass lifting device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window glass lifting device of a vehicle, which moves a window glass elevatably guided by a door sash up and down through a wire type window regulator with reduced slide resistance between a guide rail and a slider of the wire type window regulator, allowing for use of a common guide rail even for a different kind of vehicle (window glass having a different curvature) within a predetermined range.SOLUTION: A window glass lifting device of a vehicle has a clearance between a guide rail and a slider to be engaged each other in the vehicle width direction, which is set small in the vicinity of at least one of the top dead point and the bottom dead point of the slider (i.e. window glass) and set large at an intermediate part.

Description

  The present invention relates to a vehicle window glass lifting apparatus.

  DESCRIPTION OF RELATED ART The window glass raising / lowering device of a vehicle raises / lowers the window glass guided by the door sash so that raising / lowering is possible via a window regulator. As a window regulator, a slider is slidably supported on a guide rail disposed in a vertical direction in a vehicle door, and a window glass is fixed to the slider, while the slider is moved up and down via a wire drive mechanism. Wire type window regulators are known.

Japanese Patent Laid-Open No. 7-208021

  Conventionally, the clearance (play) in the vehicle width direction between the guide rail and the slider slidably fitted to the guide rail has not changed over the entire length of the guide rail so that it does not change regardless of the raising / lowering position of the window glass. Has been set constant. This means that the frictional resistance does not change over the entire length of the guide rail, that is, a certain large frictional resistance (sliding resistance) is generated.

  Moreover, the curvature of the window glass of a vehicle differs for every vehicle type, and the guide rail of a wire-type window regulator has conventionally been prepared with a different curvature according to the curvature of the window glass. In other words, the reality is that it is difficult to share guide rails for multiple vehicle types.

  The present invention reduces a sliding resistance between a guide rail and a slider of a wire type window regulator in a vehicle window glass raising and lowering device for raising and lowering a window glass guided by a door sash so as to be movable up and down through a wire type window regulator. It aims at obtaining the window glass raising / lowering apparatus which can do.

  It is another object of the present invention to provide a window glass lifting apparatus capable of sharing a guide rail within a certain range even in different vehicle types (window glasses having different curvatures).

  The present inventors paid attention to the fact that the window glass is not guided only by the guide rail and slider of the wire type window regulator, but at least one of the front and rear end edges thereof is guided by the door sash. Moreover, it is necessary to strictly control the position of the window glass in the vehicle width direction in the vicinity of the top dead center (upward end) and the bottom dead center (downward end) of the window glass.

Based on the above facts and recognition, the present invention is a vehicle door having a door frame and a door panel; a window glass guided by the door frame so that at least one of the front and rear edges can be raised and lowered; In a window glass elevating device for a vehicle having a guide rail arranged; a slider supported by the guide rail so as to be movable up and down and coupled to the window glass; and a drive mechanism for driving the slider up and down along the guide rail; The clearance in the vehicle width direction between the guide rail and the slider, which are in an associated relationship, is reduced at least in the vicinity of the top dead center and the bottom dead center of the slider (that is, the window glass), and is set to be large in the middle portion. It is said.
Specifically, the thickness of the slider guide portion of the guide rail in the vehicle width direction is reduced at least in the vicinity of the top dead center and near the bottom dead center of the slider, and is set large at the middle portion to engage with the slider guide portion. The width of the engaging recess of the slider is constant.

  In the vicinity of the top dead center of the slider (window glass), it is preferable to strictly restrict the position in the vehicle width direction by the guide rail and the slider so that the upper edge of the window glass surely enters the glass run of the door frame. Further, in the vicinity of the bottom dead center of the slider (window glass), there is no position restriction by the door frame of the window glass. Therefore, it is preferable that the position restriction in the vehicle width direction by the guide rail and the slider is strict. Whether the position regulation in the vehicle width direction by the guide rail and the slider is performed in the vicinity of the top dead center, the bottom dead center, or both can be determined according to the guide substance of the window glass depending on the vehicle type.

  It is preferable to interpose a clearance gradual change portion between a portion having a small clearance and a portion having a large clearance.

  Further, it is preferable that the sliding surface of the slider guide rail with the slider guide portion has a medium-high shape in which the clearance between the upper and lower end portions of the slider guide portion is larger than the clearance at the center portion.

  In a preferred embodiment, the clearance in the vehicle width direction between the slider guide portion of the guide rail and the slider is set small in both the vicinity of the top dead center and the vicinity of the bottom dead center of the slider, and is set large in the middle portion.

  The guide rail of the present invention is preferably composed of a molded product of a resin material because the slider guide portion has an unequal width.

  The wire type window regulator that raises and lowers the slider uses either a lower end drive type with one guide rail and a wire drive mechanism at its lower end, or a cross wire type with two guide rails and a wire drive mechanism at the middle. it can.

  The vehicle window glass lifting device of the present invention can be applied to any front door, rear door, and back door.

  The vehicle window glass lifting apparatus according to the present invention includes a slider coupled to a window glass guided by a door sash, and a clearance in a vehicle width direction of a slider guide portion of a guide rail that is engaged with the slider. Since the slider (ie, the window glass) is made small at least near the top dead center and near the bottom dead center and set large at the middle part, the sliding resistance of the window glass can be reduced, and a window glass with a different curvature can be used. For a plurality of vehicle types to be used, it becomes possible to share the guide rail and the slider (wire type window regulator).

It is a side view which shows one Embodiment of the window glass raising / lowering apparatus of the vehicle by this invention. It is the perspective view which took out and drawn the wire type window regulator from the window glass raising / lowering apparatus of the vehicle of FIG. It is sectional drawing which follows the III-III line of FIG. It is a perspective view which shows the example of a shape of a slider single-piece | unit.

  FIG. 1 shows a vehicle rear door 20 including a window glass G and a lower end drive type wire-type window regulator 10 that drives the window glass G up and down. The vehicle rear door 20 includes a door frame 21 and a door panel 22, and the door frame 21 includes an upright pillar sash 23, an upper sash 24, and a division bar 25. The vertical pillar sash 23, the upper sash 24, and the division bar 25 form a window opening 26, and the window glass G moves up and down in the window opening. A well-known glass run (not shown) is attached to the upright pillar sash 23, the upper sash 24, and the division bar 25 along the recesses on the inner surface thereof, and the front and rear edges of the window glass G are arranged on the vertical pillar sash 23 and the division bar 25. And the raising / lowering locus | trajectory is prescribed | regulated by the glass run arrange | positioned inside these. The upper edge of the window glass G enters the glass run in the upper sash 24 in the vicinity of the top dead center (rising end).

  The wire-type window regulator 10 is supported in a door panel 22, and a slider (glass bracket) 12 is slidably engaged with a slider guide portion 11 </ b> S of a guide rail 11 directed in the vertical direction. The window glass G is fixed to the slider 12. A pulley (wire deflection member, wire guide member) 13 is rotatably supported at the upper end portion of the guide rail 11, and a drive bracket 14 is fixed to the lower end portion. The drive bracket 14 supports a hoisting drum 15 and a motor unit 16 that rotationally drives the hoisting drum 15 in the forward and reverse directions. A driving wire 18 wound around the hoisting drum 15 has one end thereof. After being guided upward along the guide rail 11, it is folded back by a pulley 13 and fixed to the slider 12, and the other end is guided upward along the guide rail 11 and directly fixed to the slider 12. Therefore, when the hoisting drum 15 is driven forward and backward via the motor unit 16, the slider 12 (window glass G) moves up and down along the guide rail 11. This type of wire type window regulator is generally called a lower end drive type because the drive mechanism is located at the lower end of the guide rail 11, and is characterized by being small and having high unit characteristics.

  The guide rail 11 is made of a molded product of a resin material. As shown in FIGS. 2 and 3, a pair of inner and outer sides in the vehicle width direction is provided on one side edge (the rear side edge in the illustrated example) of the front and rear direction. A slider guide portion 11S serving as guide surfaces 11a and 11b is formed. On the other hand, the slider 12 has a U-shaped guide portion 12S having sliding surfaces 12a and 12b facing the guide surfaces 11a and 11b of the slider guide portion 11S.

  As shown in FIG. 3, the slider guide portion 11S of the guide rail 11 has thicknesses D1 and D2 in the vehicle width direction in the vicinity of the top dead center and the bottom dead center (lower end) of the slider 12 (window glass G). The width-thickness guide portions 11S1, 11S2 are large (the gap between the guide surfaces 11a and 11b is wide), and the width d is small in the middle portion (the gap between the guide surfaces 11a and 11b is narrow). Is configured. Thickness gradually changing portions (clearance gradually changing portions) 11S4 and 11S5 that smoothly change the thickness are formed between the upper and lower width thickness guide portions 11S1 and 11S2 and the intermediate width thin guide portion 11S3. On the other hand, the U-shaped guide portion 12S of the slider 12 has a U-shape in which the inner sliding surfaces 12a and 12b are part of the cylindrical surface, and the interval S between the sliding surfaces 12a and 12b is constant. . The sliding surface 12a has a smooth middle-high shape in which the clearance between the upper and lower end portions of the slider guide portion 11S is larger than the clearance of the central portion. FIG. 4 shows a single shape of the slider S.

  The basic raising / lowering operation of the above-described vehicle window glass raising / lowering device is the same as the conventional one. That is, when the hoisting drum 15 is driven forward and backward via the motor unit 16, the slider 12 (window glass G) moves up and down along the guide rail 11. During the elevation, the slider guide portion 11S of the guide rail 11 has a thickness D1 and D2 in the vehicle width direction in the vicinity of the top dead center and the bottom dead center of the slider 12 (window glass G) (guide surfaces 11a and 11b). Width guide sections 11S1 and 11S2 are formed in the middle portion, and a thin guide section 11S3 is formed in the middle portion where the thickness d is small (the gap between the guide surfaces 11a and 11b is narrow) (that is, clearance (S -d)> clearance (S-D1) and clearance (S-d)> clearance (S-D2)), the sliding resistance of the slider 12 at the intermediate portion is small. Moreover, since the guide function of the window glass G in an intermediate part is low, possibility that the same wire type window regulator 10 can be used with respect to the window glass G of a different curvature increases. The thicknesses D1 and D2 may be different or the same.

  On the other hand, since the slider guide portion 11S is thin in the vehicle width direction at the middle portion, the slider 12 (that is, the window glass G) has a large movable distance (play) in the vehicle width direction. However, the window glass G has an up-and-down trajectory defined by the upright pillar sash 23 of the door sash 21 and the division bar 25 (the glass run thereof) in the middle portion of the guide rail 11, so the vehicle of the slider 12 in this middle portion. Play in the width direction is not a problem. In the vicinity of the top dead center of the window glass G, the slider 12 engages with the width-thickness guide portion 11S1 of the slider guide portion 11S, and play in the vehicle width direction is reduced. The glass run can be correctly entered. Similarly, in the vicinity of the bottom dead center of the slider 12 (window glass G) where the movement restriction by the vertical pillar sash 23 and the division bar 25 (the glass run thereof) is not sufficient, the slider 12 is connected to the width-thickness guide portion 11S2 of the slider guide portion 11S. Since the engagement reduces the play in the vehicle width direction, the window glass G can be held in a stable state.

  Various specific forms of the guide rail 11 and the slider 12 are known, but the present invention has a problem with the relationship between the guide surfaces 11a and 11b inside and outside the guide rail 11 and the slider 12 and the sliding surfaces 12a and 12b. There is a degree of freedom in the shape of the other parts.

  In the above embodiment, the present invention is applied to the rear door 20 in which the front and rear edges of the window glass G are guided by the door frame 21, but generally only the rear edge of the window glass is guided by the door frame. The present invention can also be applied to a front door or a back door having a lift window glass.

  As described above, the wire-type window regulator has guide rails on the front and rear sides, the sliders coupled to the window glass are slidably engaged with the respective guide rails, and the pair of sliders is driven by a cross-wire type drive. A type that is driven up and down by a mechanism is also known. The present invention is also applicable to this type.

10 Wire type window regulator (Lower end drive type)
11 Guide rail 11S Slider guide portion 11S1 11S2 Width guide portion 11S3 Width guide portion 11S4 11S5 Thickness gradually changing portion (clearance gradually changing portion)
11S4 11S5
11a 11b Guide surface 12 Slider 12
12S U-shaped guide portion 12a 12b Sliding surface 13 Pulley 14 Drive bracket 15 Hoist drum 16 Motor unit 18 Drive wire 20 Vehicle rear door 21 Door frame 22 Door panel 23 Standing pillar sash 24 Upper sash 25 Division bar 26 Window opening G Window glass

Claims (5)

A vehicle door having a door frame and a door panel;
A window glass guided by the door frame so that at least one of the front and rear edge portions can be raised and lowered;
Guide rails arranged in the door panel in the vertical direction;
A slider supported by the guide rail so as to be movable up and down and coupled to the window glass; and a drive mechanism for driving the slider up and down along the guide rail;
In a vehicle window glass lifting device having
The clearance between the slider guide portion of the guide rail and the slider in the vehicle width direction, which are engaged with each other, is set to be small in at least one of the vicinity of the top dead center and the bottom dead center of the slider, and is set to be large in the middle portion. A vehicle window glass elevating device. 2. The vehicle window glass lifting apparatus according to claim 1, wherein a clearance gradual change portion is interposed between the small clearance portion and the large clearance portion. 2. The vehicle window glass lifting device according to claim 1, wherein the sliding surface of the slider guide rail of the slider with the slider guide portion has a medium-high shape in which the clearance between the upper and lower end portions of the slider guide portion is larger than the clearance of the central portion. A vehicle window glass elevating device. 4. The vehicle window glass lifting device according to claim 1, wherein a clearance between the slider guide portion of the guide rail and the slider in the vehicle width direction is between the top dead center and the bottom dead center of the slider. A vehicle window glass elevating device that is set small on both sides and set large on an intermediate portion. 5. The vehicle window glass elevating device according to claim 1, wherein the guide rail is a vehicle window glass elevating device made of a molded product of a resin material. 6.