JPH0317027Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to an X-arm type wind regulator.

Prior Art In automobiles, the windshield is raised and lowered by a window regulator. Various types of this wind regulator currently exist, but
For example, there is a wind regulator 1 as shown in FIG. This wind regulator 1 is called an X-arm type wind regulator.
A main arm 4 has a sector gear 2 fixed to one end and a roller 3 attached to the other end, and the main arm 4 is pivoted in an X-shape at the center thereof, and rollers 5 and 6 are attached to both ends. It is equipped with a sub-arm 7. The main arm 4 has its base end rotatably attached to a base plate 8 as a mounting base fixed to a panel side such as a door panel or a vehicle body panel via a shaft 9, and the rollers 3 and 5 are connected to a window glass 10. The roller 6 is fitted into the guide rail 11 provided on the lower edge and into the rail 12 fixed to the panel side, and the pinion gear 13 that meshes with the sector gear 2 is manually or unillustrated via a handle (not shown). The sector gear 2 is driven by electric rotation via a motor. When the sector gear 2 is driven, the main arm 4 rotates around the shaft 9, and the opening degree between it and the sub arm 7 changes, and as a result,
The window glass 10 is raised and lowered.

Incidentally, in the wind regulator 1, a spiral spring 20 as shown in FIGS. 2 and 3 is provided between the main arm 4 and the base plate 8. By supporting the weight of the window glass 10, the difference in operating force between when the window glass 10 is raised and when it is lowered is balanced out.

That is, the shaft 9 is fixed to the main arm 4,
The spiral spring 20 is rotated between the base plate 8, and one end (outer circumference side) of the spiral spring 20 is engaged with the base plate 8, and the other end (inner circumference side) is engaged with the shaft 9. By stopping and urging the main arm 4 in the upward direction of the window glass 10, the operating force is reduced when the window glass 10 is raised, and the operating force is increased when the window glass 10 is lowered. Therefore, when the window glass 10 is lowered, the spiral spring 20 is wound up as the shaft 9 rotates due to the downward rotation of the main arm 4 and accumulates biasing force. When rising, the spiral spring 2
0 is rewound to release the stored biasing force.

However, in such a conventional window regulator 1, when the spiral spring 20 is wound up when the window glass 10 is lowered, as shown in FIG. As shown in FIGS. 4 and 5, an external force acts on the spring 20 so that the arm portion of the spiral spring 20 rotates around the locking end toward the center of the spiral spring 20 (clockwise in the figure). As shown in the figure, the diameter of the spiral spring 20 on the side (upper side in the figure) from which one end that is locked to the base plate 8 extends is contracted, and each of the spiral springs approaches each other.
In addition, the diameter of the winding portion on the opposite side (lower side in the figure) expands, and the diameter of the outermost layer winding portion becomes larger. As a result, the spiral spring appears to move downward under the action of the external force. Therefore, when the window glass 10 is lowered, the winding portions of the winding portion on one side having a large degree of proximity quickly come into contact with each other.
The rubbing at this time causes abnormal noise.
Therefore, it is conceivable to increase the interval between each winding portion in order to prevent the occurrence of this abnormal noise, but in this case, not only will the expected effect not be achieved, but the spiral spring 20 will also become larger. With,
Since the spiral spring 20 is normally housed in the recess 14 of the base plate 8, the base plate 8 is forced to be larger, which causes an increase in the weight of the vehicle.

Purpose of the invention In view of the conventional situation, the present invention is designed to prevent the winding portion on one side of the spiral spring from coming into close contact with each other earlier than the other side, without increasing the size of the spiral spring. The purpose of this invention is to provide a wind regulator.

Structure of the Invention In order to achieve the above object, the present invention is provided with a main arm whose proximal end is rotatably attached to the mounting base, and a sub-arm is pivoted in an X-shape at the center. By rotating the arm and changing the opening degree of the main arm and the sub-arm, the window glass supported by the tips of the main arm and the sub-arm is raised and lowered,
A spiral spring whose one end is locked to the mounting base and the other end to the main arm is interposed between the mounting base and the main arm, and the biasing force of this spiral spring causes the In a window regulator that balances the force for raising and lowering the windshield, a wall portion is attached from the mounting base to the side opposite to the side from which the one end of the spiral spring that is locked to the mounting base protrudes. is provided protrudingly between the wall portion and the spiral spring, and when the spiral spring is wound between the wall portion and the spiral spring, the spiral spring is pressed toward the center to such an extent that each winding portion does not come into contact with each other, and at least the spiral spring is A stop member is provided, the contact portion of which is made of synthetic resin.

Effect: Therefore, when the spiral spring is in a wound state with this configuration, one side of the spiral spring is pressed by the stop member, so the wound portion of the spiral spring cannot expand in this direction, so that the spiral spring cannot be expanded in this direction. The side opposite to the side pressed by the stop member, that is,
The intervals between the winding portions on the one end protruding side are not so close that they rub against each other.

Embodiments Hereinafter, embodiments of the present invention will be described in detail based on the drawings. Incidentally, in describing this embodiment, the same parts as those in the conventional structure will be given the same reference numerals.

That is, FIG. 6 shows the main parts of a wind regulator 1a showing an embodiment of the present invention, in which 4 is a main arm, 7 is a sub-arm, 2 is a sector gear, and 8 is a base plate as a mounting base. The main arm 4 is pivotally connected via a shaft 9 to the base plate 8, which is fixed to a panel (not shown). Incidentally, the shaft 9 is fixed to the main arm 4 and rotates with the main arm 4. In the figure, 8a is a shaft hole of a pinion gear (not shown) that meshes with the sector gear 2.

The main arm 4 is biased by a spiral spring 20 provided between the main arm 4 and the base plate 8 in a direction in which a window glass (not shown) rises (counterclockwise in the drawing). That is, as shown in FIG. 3, the spiral spring 20 is housed in a recess 14 formed on the back side of the base plate 8, and one end 20 protrudes from the outer periphery of the spiral spring 20.
a is locked to a locking piece 21 formed on the center line c of the base plate 8, and the other end 20b on the inner circumferential side of the spiral spring 20 is fitted into a split groove 9a formed in the shaft 9. are fitted and locked.
Therefore, the spiral spring 20 is wound up and unwound as the shaft 9 is rotated in accordance with the forward and reverse rotation of the main arm 4 as the window glass descends and rises. . By the way, the shaft 9 is aligned with the center line C similarly to the locking piece 21.
Wall portions 22, 22a substantially parallel to the center line C are formed on both sides of the recess 14 disposed above and housing the spiral spring 20. Therefore, in FIG. 6, these wall portions 22, 22a are located opposite to each other in the direction in which the winding portion of the spring 20 expands when the spiral spring 20 is wound up when the window glass 10 is lowered. Incidentally, the shaft 9 and the locking piece 21 do not necessarily need to be located on the center line C, and the wall parts 22, 22a do not need to be formed parallel to the center line C. It is sufficient that the spiral spring 20 is located in the direction in which the spiral spring 20 expands.

Here, the present invention is designed to connect the wall portion 22 on the side where the winding portion of the spiral spring 20 expands, that is, the side opposite to the side from which the one end portion 20a is projected (lower left side in FIG. 6) and the outer periphery of the spiral spring 20. During the period, Fig. 8 A, B
A stop member 3 for stopping the expansion of the winding portion as shown in FIG.
0, and the stop member 30 presses the side of the spiral spring 20 opposite to the protruding side of the one end 20a toward the center, that is, in the direction of the axis 9. That is,
The stop member 30 includes a stop portion 31 having a width W approximately corresponding to the gap between the spiral spring 20 and the wall portion 22, and a fitting portion extending from the stop portion 31 and fitted around the shaft 9. Extension portion 33 with hole 32 formed
are integrally formed from synthetic resin. Then, the fitting hole 32 is fitted to the outer periphery of the shaft 9 between the base plate 8 and the spiral spring 20, and
The stop portion 31 is inserted between the wall portion 22 and the outer periphery of the spiral spring 20. At this time, the distance between the winding portions of the spiral spring 20 on the side where the stop portion 31 is provided is equal to the distance between the winding portions of the spiral spring 20 on the side where the stop portion 31 is provided.
The situation is almost the same as before without the .

Since the stop member 30 is attached with the above configuration, when the spiral spring 20 is wound up as the window glass descends from this state, the widths of the spiral springs 20 and 30 become close to each other between the wound portions on the protruding side of the one end 20a. However, although the other side expands significantly, the stop member 30 interposed between the expansion side and the wall portion 22 prevents the expansion of the winding portion, so that the proximal side portions do not come into contact with each other. Therefore, it is possible to prevent abnormal noise from occurring when the spiral spring 20 is wound up, and to enable smooth operation.
Note that the spiral springs 20 are in constant contact with the stop members 30, but since the stop members 30 are made of synthetic resin, these spiral springs 2
0. The stop member 30 makes smooth contact and does not generate any abnormal noise. Further, since the fitting hole 32 of the stop member 30 is fitted around the shaft 9, the stop member 30 is sandwiched between the spiral spring 20 and the wall portion 22, and the stop member 30 is The member 30 will not fall off due to vibrations such as when the vehicle is running.

FIGS. 9 and 10 A and B show other embodiments,
When the spiral spring 20 protrudes from the periphery of the recess 14 formed in the base plate 8, the spiral spring 20 side of the stop portion 31 of the stop member 30a is aligned with the height of the spiral spring 20, and the spiral spring 20 side of the stop portion 31 of the stop member 30a is aligned with the height of the spiral spring 20, and The height of the spiral spring 20 is increased so that the spiral spring 20 is pressed over its entire height. Also in this embodiment, the stop member 30a is made of synthetic resin.

Therefore, in this embodiment, although the spiral spring 20 protrudes from the periphery of the recess 14, the spiral spring 20 is effectively pressed by the stop member, and the same operation and effect as in the previous embodiment is achieved. play.

In addition, in each of the embodiments described above, the stop member 3
0 and 30a are made entirely of synthetic resin, but in this way, it is sufficient that at least the part that contacts the spiral spring 20 is made of synthetic resin, without making the entire part of the spiral spring 20 made of synthetic resin. No abnormal noise is generated between 20 and the stop member.

Effects of the Invention As explained above, in the wind regulator of the present invention, the wall protrudes from the mounting base on the side opposite to the side from which the one end of the spiral spring that is locked to the mounting base projects. A stop member made of synthetic resin that presses the spiral spring toward the center is disposed between this wall and the spiral spring, so that when the spiral spring is wound up, the spiral spring Since one side is pressed by a stop member, the wound portion of the spiral spring cannot expand in this direction, so the gap between the wound portions on the side opposite to the side pressed by the stop member, that is, the one end protruding side, is This prevents them from coming into contact with each other, thereby eliminating the occurrence of abnormal noises caused by rubbing during contact. In addition, since the stop member is made of synthetic resin at least at the contact part with the spiral spring, the spiral spring and the stop member are in smooth contact, which is advantageous in that it is possible to prevent abnormal noise from occurring at this part. It has a great effect.

[Brief explanation of the drawing]

Fig. 1 is a schematic configuration diagram of an X-arm type wind regulator, Fig. 2 is a front view of main parts of a conventional wind regulator, Fig. 3 is a sectional view taken from the line - - in Fig. 1, and Fig. 4. 5 is a front view of the main parts showing the operating state of a conventional wind regulator, FIG. 5 is a sectional view taken from the line - - in FIG. 4, and FIG. Front view, No. 7
The figure is a cross-sectional view taken from the line - in Fig. 6, and Fig. 8 shows a stop member used in the wind regulator of Fig. 6. Fig. A is a front view, and Fig. B is a -
9 is a sectional view taken from the line, FIG. 9 is a sectional view corresponding to FIG. 7 showing another embodiment of the present invention, and FIG.
The stop member used in the wind regulator shown in the figure is shown, where A is a front view and B is a front view.
FIG. 1, 1a... Wind regulator, 4... Main arm, 7... Sub arm, 8... Base plate (mounting board), 9... Axis (pivot point of mounting board and main arm), 10... Window glass,
20... Spiral spring, 22... Wall portion, 30,
30a...stop member.

Claims (1)

[Scope of utility model registration request] The base end is pivotably attached to the mounting base, and
A main arm with a sub-arm pivoted in an X-shape is provided in the center, and by rotating this main arm and changing the opening degree of the main arm and the sub-arm, the tip of each of the main arm and the sub-arm can be One end is locked to the mounting base between the mounting base and the main arm in order to raise and lower the supporting window glass and to balance the operating force between raising and lowering during the raising and lowering, and , in a wind regulator equipped with a spiral spring whose other end is locked to the main arm, a mounting base is installed on the side opposite to the side from which one end of the spiral spring that is locked to the mounting base projects. A wall is provided between the wall and the spiral spring, and the spiral spring is pressed toward the center of the spiral spring to such an extent that each winding portion does not come into contact with each other when the spiral spring is wound, and at least A wind legiator characterized in that a stop member is provided whose contact portion with the spiral spring is made of synthetic resin.