JPH08326412A - Pane rising and falling device for car - Google Patents

Abstract

PURPOSE: To promote the function of a pane rising and falling device for car by interlocking a glass bracket for bearing the pane with a feed screw, and making smaller a screw pitch of the upper end of the feed screw than the rest of the screw pitch when the pane is moved up and down with rotation of the feed screw. CONSTITUTION: When an interlocking tooth of a slider 9 is interlocked with a thread groove having a screw pitch smaller than that of both up and down ends of a feed screw 2, vertical moving force generated by rotation of the screw 2 and applied to a pane 19 makes large in comparison to the interlock of it with the rest of the thread groove. Then, for that purpose, the pane 19 is surely full closed in the case of rising, and it is surely full opened in the case of falling. Then, since rising and falling speed becomes slower before the pane 19 is raised and lowered to full open and close, the impact is reduced when the pane is full closed and opened and, at the same time, high grade sense is caused. By this constitution, operation in the case of opening and closing can be promoted.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel vehicle window glass lifting device. More specifically, it is intended to provide a new vehicle window glass lifting device which ensures that the window glass is completely closed.

[0002]

2. Description of the Related Art In a vehicle, for example, an automobile, a window glass lifting device called a power window regulator is provided.

FIG. 7 shows a conventional vehicle window glass lifting device a, in which a slider d is integrally provided on a glass bracket c that supports the lower center of the window glass b.
The feed screw e is inserted through an insertion hole (not shown) formed vertically through the slider d, and the pitches of the feed screw e are all formed at equal intervals. Then, the engagement teeth (not shown) provided in the insertion hole are engaged with the screw grooves f of the feed screw e, and the feed screw e is rotated by driving the motor g connected to the lower end of the feed screw e. And the flutes f of the feed screw e
As a result, the engaging teeth of the slider d are sent and the glass bracket c moves up and down, so that the window glass b supported by the glass bracket c also moves up and down.

[0004]

By the way, usually, just before the window glass is lifted and completely closed, a part of the edge of the window glass is provided on the door or the vehicle body of the automobile. Since the window glass is closed while sliding in contact with the frame that supports the window glass, the window glass receives a resistance force from the frame at that time.

However, the vehicle window glass lifting device a
In this case, since all the screw pitches of the feed screw e are formed at equal intervals, the rising force received by the window glass b caused by the rotation of the feed screw e is kept constant. The window glass b may not move immediately before the window glass b is completely closed due to the resistance force received from the frame, and the window glass b may not be completely closed.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the vehicle window glass lifting device according to the present invention is engaged with a feed screw and moved in the vertical direction by the rotation of the feed screw and the window glass. A glass bracket for supporting the above is provided, and the screw pitch of the upper end portion of the feed screw is made smaller than the screw pitch of the remaining portion.

[0007]

Accordingly, in the vehicle window glass lifting device of the present invention, by changing the screw pitch of the feed screw, the upward force applied to the window glass by the rotation of the feed screw is increased.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The details of the vehicle window glass lifting device according to the present invention will be described below with reference to an illustrated embodiment.

In the illustrated embodiment, the present invention is applied to an elevating device for a window glass of an automobile door.

In the following description, the left side in FIG. 1 is the front, the right side is the rear, the front side of the drawing is the left side, the back side of the drawing is the right side, and the vertical direction is the up and down direction.

Reference numeral 1 is a vehicle window glass lifting device, and 2 is a linear feed screw extending straight in the vertical direction.

The feed screw 2 is a so-called two-thread screw, and two thread grooves 3L and 3R are formed on the outer peripheral surface thereof. These screw grooves 3L and 3R are formed with the same pitch and shifted by exactly a half pitch, and the positions in the axial direction of the feed screw 2 are made to be the same at positions separated from each other by 180 degrees. Then, the upper end side of the feed screw 2 is approximately a quarter
Also, the screw pitch of about a quarter of the lower end side is smaller than the screw pitch of the remaining portion.

Reference numeral 4 denotes a motor which is fixed to a structure (not shown) of the door of the automobile and is located in the vicinity of the lower end of the feed screw 2. Reference numeral 5 denotes a gear case thereof. A worm (not shown) is housed in the gear case 5, and the worm is connected to the output shaft of the motor 4. A worm wheel (not shown) connected to the lower end of the feed screw 2 meshes with the worm in the gear case 5. Therefore, when the motor 4 is driven, the feed screw 2 is rotated.

Reference numeral 6 denotes a bracket attached to the upper end of the feed screw 2. The bracket 6 is fixed to the structure of the door of the automobile, and the upper end of the feed screw 2 is rotatably supported by the bracket 6. (See FIG. 1).

Reference numeral 7 denotes a glass bracket, which comprises a support portion 8 and a slider portion 9 which is vertically moved by the feed screw 2.

The supporting portion 8 is composed of a glass supporting piece 10 formed of a sheet metal material or a resin for supporting a window glass, which will be described later, and elongated in the left-right direction, and slider portion mounting pieces 11 and 11 supporting the slider portion 9.

The slider mounting pieces 11, 11 are rectangular plates long in the front-rear direction, and are spaced apart from the lower center of the rear surface of the glass support piece 10 in the left-right direction and project rearward. Then, guide holes 11a, 11a that are long in the front-rear direction are formed in the central portions of the slider portion mounting pieces 11, 11 (see FIG. 4).

The slider portion 9 includes a main portion 12 and an engaging portion 13,
13 and.

The main portion 12 has a substantially rectangular parallelepiped shape, and the four corners on the rear surface side are rounded so that the central portion of the rear surface in the vertical direction bulges outward.
The length in the left-right direction is formed to be the same as or slightly shorter than the interval between the slider part mounting pieces 11 of the glass bracket 7. Further, the length in the front-rear direction is shorter than the length of the slider portion mounting pieces 11, 11.

The feed screw 2 is inserted through the slider portion 9, and a substantially circular insertion hole 14 having an inner diameter slightly larger than the outer diameter of the feed screw 2 is vertically provided so as to penetrate therethrough.
The left and right side surfaces of the inner surface of the concave portion 15 extending vertically
Are formed. Then, through holes 16 and 16 communicating with the left side surface and the right side surface of the slider portion 9 are formed substantially at the centers of the bottom surfaces of the concave portions 15 and 15, respectively.

The engaging portions 13 and 13 are engaging teeth 17L and 17R which engage with the screw grooves 3L and 3R of the feed screw 2 and guided pins 18 and 1 which are integrally provided with the engaging teeth 17L and 17R.
8 and.

The engaging teeth 17L, 17R are such that the surfaces 17a, 17a of the feed screw 2 on the side engaging with the screw grooves 3L, 3R are rounded, and the surfaces not engaging with the screw grooves 3L, 3R. The surfaces 17b, 17b, that is, the screw groove 3L of the feed screw 2,
The surface opposite to the inner surface of 3R is a flat surface,
The engaging teeth 17L, 17R are generally in the shape of a semi-cylindrical barb. The length of the engaging teeth 17L, 17R in the longitudinal direction is slightly shorter than the width of the recesses 13, 13 of the slider portion 9 in the front-rear direction.

A flat surface 1 of the engaging teeth 17L, 17R
Guide holes 11 formed in the slider mounting pieces 11, 11 of the glass bracket 7 from approximately the center of 7b, 17b.
Guided pins 18, 18 that engage with a, 11a and have a diameter slightly smaller than the inner diameters of the through holes 16, 16 are provided in a protruding manner.

Thus, the guided pins 18, 18 are inserted from the insertion hole 14 side into the through holes 16, 16 formed in the recesses 15, 15 of the slider portion 9, respectively, and are engaged in the inserted state. Part of the teeth 17L, 17R are located in the recesses 15, 15 (see FIG. 6), and the guided pin 18,
The tip portion of 18 is in a state of being slightly projected from the left and right side surfaces of the slider portion 9 (see FIGS. 5 and 6).

In this state, the distance between the facing surfaces of the engaging teeth 17L and 17R is slightly wider than the distance between the inner surfaces of the screw grooves 3L and 3R located on the opposite sides of the feed screw 2. Has been done. And the guided pin 18,
The tip end of 18 is engaged with the guide holes 11a, 11a formed in the slider part mounting pieces 11, 11 of the glass bracket 7, whereby the slider part 9 is slidable with respect to the support part 8 of the glass bracket 7. It is freely rotatable.
Further, as described above, the through holes 16, 16 of the slider portion 9
The diameter of the guided pins 18, 18 inserted in the
Since the inner diameters of 6 and 16 are slightly smaller, the engaging portions 13 and 1
3 is rotatable with respect to the slider portion 9 (see FIG. 3).
reference).

In the above case, the slider portion 9 is provided with the guided pins 18 and 18, and the glass bracket 7 is provided with the guide hole 1
1a and 11a are formed so that the slider portion 9 slides on the support portion 8 of the glass bracket 7, but conversely, a guide hole or a guide recess is formed in the slider portion 9 to cover the glass bracket 7. A guide pin may be provided so that the slider portion 9 slides on the support portion 8 of the glass bracket 7.

Of the engaging teeth 17L and 17R that engage with the screw grooves 3L and 3R of the feed screw 2, the surfaces 17b and 17b on the side that does not engage with the screw grooves 3L and 3R are flat. ,
When the guided pins 18, 18 rotate with respect to the slider portion 9, the surfaces 17b, 17b of the engaging teeth 17L, 17R are made to slide easily with respect to the bottom surfaces of the recessed portions 15, 15 of the slider portion 9, Guided pin 18, slider portion 9 of 18
It is designed so as not to hinder the rotation with respect to.

Reference numeral 19 denotes a window glass of an automobile, which is curved so that an intermediate portion in the vertical direction projects rearward, and the lower end portion of the glass support piece 1 of the glass bracket 7.
0 is connected and supported by means not shown.

Thus, the thread groove 3 of the feed screw 2 inserted through the insertion hole 14 formed in the main portion 12 of the slider portion 9.
L and 3R have engaging teeth 17L and 1 of the slider portion 9, respectively.
7R is engaged. When the feed screw 2 is rotated by the motor 4, the engaging teeth 17L and 17R are fed by the screw grooves 3L and 3R, so that the glass bracket 7 moves up and down, thereby supporting the glass bracket 7. The opened window glass 19 also moves up and down.

When the window glass 19 is moved in the vertical direction, the screw pitches of the upper end portion and the lower end portion of the feed screw 2 are made smaller than the screw pitches of the remaining portions thereof, so that the engaging teeth 17L of the slider portion 9 are formed. , 17R are engaged with the thread grooves 3L, 3R of the feed screw 2 having a small screw pitch, and are engaged with the thread grooves 3L, 3R of the portion having a small screw pitch. On the other hand, the vertical movement force applied to the window glass by the rotation of the feed screw 2 is increased. As a result, when the window glass 19 rises, the window glass 19 is surely fully closed, and when the window glass 19 is lowered, the window glass 19 is surely fully opened.

Further, since the screw pitch of the upper end portion of the feed screw 2 is made smaller than the remaining portion except the lower end portion, when the window glass 19 rises, its rising speed is slow before the window glass 19 is closed. Therefore, the impact when the window glass 19 is closed is small, and the car has a high-class feeling.

Further, since the screw pitch of the lower end portion of the feed screw 2 is smaller than the remaining portion except the upper end portion, when the window glass 19 descends, its descending speed is slow before the window glass 19 opens. Therefore, the impact when the window glass 19 is opened is small.

By the way, in the above-mentioned vehicle window glass lifting device 1, since the window glass 19 has a curved surface, the window glass 19 moves along a path having a curvature corresponding to the curved surface. Since it is supported by the door of the automobile, the linear feed screw 2 is moved along with the vertical movement of the glass bracket 7 and the window glass 19 supported by the glass bracket 7.
The distance between the window glass 19 and
The angle of the window glass 19 with respect to the feed screw 2 will also change.

However, in the above-mentioned vehicle window glass lifting device 1, since the slider portion 9 is slidable with respect to the support portion 8 of the glass bracket 7, the feed screw 2 and the window glass 19 are combined. Even if the space between them changes, the space between the window glass 19 and the portion where the engaging portion 13 of the slider portion 9 engages with the screw grooves 3L, 3R of the feed screw 2 also changes (see FIG. 1). ), It is possible to cope with a change in the distance between the feed screw 2 and the window glass 19. Further, since the slider portion 9 is rotatable with respect to the support portion 8 of the glass bracket 7, it is possible to cope with a change in the angle of the window glass 19 with respect to the feed screw 2. Further, when the guided pins 18, 18 rotate with respect to the slider portion 9, the engaging teeth 17L, 17R provided integrally with the guided pins 18, 18 are also rotatable, and the window glass 19 is curved. And the angle of the window glass 19 with respect to the linear feed screw 2 changes along with the spiral groove 3L,
Even if the inclination angles of the engaging teeth 17L and 17R change with respect to the inclination angle of 3R, the engaging teeth 17L and 17R rotate in response to the change, and the movement of the window glass 19 due to the rotation of the feed screw 2 occurs. It is done smoothly.

Further, at the upper end and the lower end of the feed screw, the screw pitch is made smaller than the remaining portion, but since the engaging portions 13, 13 are rotatable with respect to the slider portion 9, The joint teeth 17L and 17R rotate in response to the change in the inclination angle of the screw grooves 3L and 3R of the feed screw 2 caused by the change in the screw pitch, so that the window glass 19 can be smoothly moved up and down.

In the above embodiment, the linear feed screw 2 is used, and the change in the distance between the feed screw 2 and the window glass 19 caused by the vertical movement of the window glass 19. Also, the support portion 8 of the glass bracket 7 supports the slider portion 9 slidably and rotatably so as to be able to cope with the change in the angle of the window glass 19 with respect to the feed screw 2. Applicant number of the lifting device filed by the applicant on June 3, 1994 Japanese Patent Application No. 6-1
It can also be applied to a vehicle window glass lifting device as shown in the detailed description of the invention of No. 44069. That is, the slider may be fixed to the supporting portion of the glass bracket, and the ball screw formed of resin may have a curvature corresponding to the curvature of the window glass, and the window glass may be moved by the rotation of the ball screw.

[0037]

As is apparent from the above description, the window glass lifting device for a vehicle of the present invention engages with the feed screw and is vertically moved by the rotation of the feed screw and supports the window glass. And the screw pitch at the upper end of the feed screw is made smaller than the screw pitch at the remaining portion.

Therefore, in the vehicle window glass lifting device of the present invention, by changing the screw pitch of the feed screw, the upward force exerted on the window glass due to the rotation of the feed screw is increased, so that the window glass is securely closed completely. Is done.

Further, since the rising speed of the window glass is slowed before the window is closed, a high-class feeling of the automobile is created.

It should be noted that the shapes and structures of the respective parts shown in the above-mentioned embodiments are merely examples of the embodiment when carrying out the present invention, and the technical scope of the present invention is limited thereby. It should not be construed in a conventional way.

[Brief description of drawings]

FIG. 1 shows an example of an embodiment of a vehicle window glass lifting device according to the present invention, together with FIGS. 2 to 6, and is a side view.

FIG. 2 is a conceptual diagram showing a feed screw.

FIG. 3 is a perspective view showing a glass bracket.

FIG. 4 is a perspective view showing a support portion of a glass bracket.

FIG. 5 is a perspective view showing a slider portion of the glass bracket.

FIG. 6 is a plan view showing a slider portion of the glass bracket.

FIG. 7 is a front view showing a conventional vehicle window glass lifting device.

[Explanation of symbols]

 1 Vehicle window glass lifting device 2 Feed screw 7 Glass bracket 8 Support part 9 Slider part 19 Window glass

Claims (6)

[Claims] 1. A glass bracket that engages with a feed screw and is moved vertically by rotation of the feed screw and supports a window glass, wherein a screw pitch of an upper end portion of the feed screw is smaller than a screw pitch of the remaining portion. A window glass lifting device for a vehicle characterized by the above. 2. The window glass lifting device for a vehicle according to claim 1, wherein the screw pitch of the lower end portion of the feed screw is smaller than the screw pitch of the remaining portion except the upper end portion. 3. The vehicular window glass lift according to claim 1 or 2, wherein the feed screw is linearly arranged in the vertical direction, and the window glass is curved at least in the vertical direction. apparatus. 4. The glass bracket comprises a support part supporting the window glass and the slider part, and a slider part supported by the support part, wherein the slider part is attached to the support part of the glass bracket by a feed screw and a window. The vehicle windowpane lifting device according to claim 3, wherein the windowpane lifter is supported so as to be movable in the glass array direction. 5. The glass bracket comprises a support part for supporting the window glass and the slider part, and a slider part supported by the support part, wherein the slider part is turnable on the support part of the glass bracket. The window glass lifting device for a vehicle according to claim 3, which is supported. 6. The window glass lifting device for a vehicle according to claim 4, wherein the slider portion is rotatably supported by the support portion of the glass bracket.