JP2012117248A - Window regulator device of vehicle door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window regulator device of a vehicle door, capable of being made light in weight and lowering costs without inviting a problem of enlargement.SOLUTION: On the outer peripheral part of a through-hole 12a of a lift arm 12, a circular bead 12e of such a size that a first equalizer arm 15 is to be in slidable contact and it passes through the vicinity of both edges 12f, 12f in the width direction W of the lift arm 12 is formed so as to be at the almost same height as a main surface 13a of a plug plate 13. On the lift arm 12, vertical beads 12g, 12h extending to end parts 12b, 12c in the longitudinal direction respectively from positions separated from the circular bead 12e are formed. The respective vertical beads 12g, 12h are projected toward the opposite side of equalizer arms 15, 16 and have the height greater than the projection height of the circular bead 12e, and an extension bead 12i extending so as to overlap in the width direction W with the vertical bead 12h is formed on the circular bead 12e.

Description

  The present invention relates to an X-arm type window regulator device that drives a window glass disposed on a door of an automobile to move up and down.

  In this type of window regulator device, from the viewpoint of weight reduction and cost reduction, the plate thickness is made as thin as possible while ensuring the necessary rigidity of the lift arm. For example, Patent Document 1 proposes a structure in which curled portions are bent and formed at both side edges in the longitudinal direction of the lift arm, and beads extending in the longitudinal direction are formed on the lift arm.

JP-A-11-210319

  By the way, in the conventional structure, although the thickness of the lift arm can be reduced to reduce the weight and cost of the entire wind regulator device, the size of the lift arm in the thickness direction is increased by the amount of the curled portion, and the curled portion and the equalizer are also increased. In order to avoid interference with the arm, it is necessary to make the bead height of the lift arm larger than that of the curled portion, and there arises a problem that the entire window regulator device is enlarged accordingly.

  When such a window regulator device is mounted on a door, it is necessary to increase the vehicle width dimension of the door, and it is a structure that is difficult to employ particularly in a small vehicle with restrictions on the vehicle width dimension of the door. Therefore, there is a demand for an optimum structure that can reduce the weight and cost without increasing the size of the window regulator device.

  The present invention has been made in view of the above-described conventional circumstances, and an object thereof is to provide a vehicle window regulator for a vehicle door that can be reduced in weight and cost without incurring the problem of upsizing. .

  The present invention relates to a lift arm whose one end in the longitudinal direction is connected to a lift arm bracket that supports a window glass, and the other end is connected to an actuator, and a through hole formed in the center in the longitudinal direction of the lift arm. A window regulator device for a vehicle door comprising first and second equalizer arms that are coupled to one main surface and the other main surface of a plug plate that are rotatably arranged and extend so as to intersect the lift arm. A circular bead having a size passing through the vicinity of both edges in the width direction perpendicular to the longitudinal direction of the lift arm is provided on the outer peripheral portion of the through hole of the lift arm so that the first equalizer arm is in sliding contact with the plug plate. The lift arms are formed so as to have substantially the same height as the main surface, and the longitudinal center line from the position away from the circular bead A vertical bead extending through the end through each of the vertical beads protrudes toward the opposite side of the first and second equalizer arms and has a height greater than the protruding height of the circular bead; One of the vertical bead and the circular bead is formed with an extension bead extending so as to overlap the other bead in the width direction.

  In the window regulator device according to the present invention, a circular bead is formed on the outer peripheral portion of the through hole of the lift arm, and a vertical bead extending from the position away from the circular bead toward the longitudinal end portion is formed. Or it was set as the structure which forms the extended bead extended so that it may overlap with the bead of the other side from the one side of a circular bead.

  With this configuration, it is possible to reduce the plate thickness to the minimum necessary while ensuring the necessary rigidity of the lift arm, contributing to weight reduction and cost reduction of the entire window regulator device, and thus low cost. It can be used in small cars that are strongly demanded.

  In addition, the vertical bead protrudes toward the opposite side of the equalizer arm and has a height higher than that of the circular bead, so that the vertical bead can be prevented from interfering with the equalizer arm when the lift arm is rotated. The rigidity of can be further increased.

  In the present invention, since the circular bead is formed so as to be substantially the same height as the main surface of the plug plate, the difference in the plate thickness with the plug plate when the plate thickness of the lift arm is reduced is absorbed by the circular bead. As a result, the curl portion is formed on the conventional lift arm, and the height dimension in the plate thickness direction of the lift arm can be reduced as compared with the case where a bead higher than the curl portion is formed. Can be avoided. As a result, it is possible to mount the window regulator device without increasing the vehicle width dimension of the door, and as a result, it can be adopted for a small vehicle in which the vehicle width dimension of the door is restricted.

  In the present invention, since the circular bead is sized to pass through the vicinity of both edges in the width direction of the lift arm, the contact width with the equalizer arm can be increased, and the equalizer arm is in sliding contact with the line contact. A stable rotation operation can be obtained without causing rattling or the like. That is, in the case of the above-described conventional structure, since the bead width of the lift arm is narrow, the contact width area with the equalizer arm is also reduced, and both are slid by surface contact, and rattling is likely to occur. ing.

  Furthermore, in the present invention, since the extended bead extending so as to overlap the bead on the other side in the width direction is formed on one side of the vertical bead or the circular bead, the round bead on which the stress of the lift arm is most easily concentrated Rigidity in the portion between the vertical bead can be ensured, and the plate thickness of the lift arm can be further reduced. For example, when an extension bead and a vertical bead having different heights are formed on the lift arm so as to be continuous, the change point of the height of both beads becomes a breaking point, which is disadvantageous in strength. In the present invention, the extended bead is provided so as to overlap with the vertical bead or the circular bead in the width direction, so that a break point does not occur even if the bead height is different, and as a result, a starting point of plastic deformation due to an external force. Can be avoided.

It is a block diagram of the window regulator apparatus of the vehicle door by Example 1 of this invention. It is a bottom view of the window regulator device. It is a front view of the lift arm of the said window regulator apparatus. It is sectional drawing (IV-IV sectional view taken on the line of FIG. 3) of the said lift arm. It is sectional drawing of the equalizer arm connection part of the said lift arm. It is explanatory drawing of the experiment conducted in order to confirm the effect of a present Example. It is a characteristic view which shows the said experimental result.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 5 are views for explaining a window regulator device for a vehicle door according to a first embodiment of the present invention.

  In the figure, reference numeral 1 denotes an X-arm type window regulator device disposed on a door of an automobile. Although not shown, the door has a structure in which a window frame having a window opening is connected to a hollow door body.

  The window regulator device 1 is disposed in the door body, and includes a lift arm bracket 3 attached to a lower edge 2a of a window glass 2 that opens and closes a window opening, and an inner panel 5 (see FIG. 2) (refer to the two-dot chain line in FIG. 2), the equalizer arm bracket 4 fixed by bolting, the elevating drive mechanism 6 disposed across the equalizer arm bracket 4 and the lift arm bracket 3, and the elevating drive mechanism 6 And a base plate 7 for supporting the. The base plate 7 is fixed to the inner panel 5 with bolts.

  The lift drive mechanism 6 has one end 12b in the longitudinal direction slidably connected to the lift arm bracket 3 via a roller 10 and the other end 12c connected to the actuator 11, and the lift arm. 12 is connected to a disc-shaped plug plate 13 disposed in a through-hole 12a formed in a central portion in the longitudinal direction of 12 and a main surface 13a and another main surface 13b of the plug plate 13, respectively. First and second equalizer arms 15 and 16 extending so as to intersect the lift arm 12 are provided.

  A pin hole 12d is formed in the lift arm 12 so as to be positioned between the through hole 12a and the other end 12c, and a rotating pin 17 attached to the base plate 7 is provided in the pin hole 12d. It is inserted. Accordingly, the lift arm 12 is supported by the base plate 7 so as to be rotatable about the rotation pin 17.

  The first equalizer arm 15 has an inner end 15a coupled to the main surface 13a of the plug plate 13 by welding, and an outer end 15b is slidably connected to the equalizer arm bracket 4 via a roller 19. Has been.

  The second equalizer arm 16 has an inner end 16a connected to the other main surface 13b of the plug plate 13 by welding, and an outer end 16b slidably connected to the lift arm bracket 3 via a roller 18. Has been. As a result, the first and second equalizer arms 15, 16 are opposed to each other with the inner ends 15 a, 16 a facing each other with the plug plate 13 interposed therebetween, and can be rotated relative to the lift arm 12.

  The actuator 11 includes a driven gear 20 coupled to the other end portion 12 c of the lift arm 12 by welding or the like, a pinion gear 21 meshing with the driven gear 20, and a drive motor 22 connected to the pinion gear 21. The pinion gear 21 and the drive motor 22 are attached to the base plate 7.

  When the drive motor 22 is rotated by the occupant's switch operation, the lift arm 12 is rotated about the rotation pin 17 via the pinion gear 21 and the driven gear 20, whereby the window glass 2 is in the fully closed position and the fully opened position. Go up and down between.

  The lift arm 12 is formed so that the width direction W dimension orthogonal to the longitudinal direction L gradually increases from the one end portion 12b to the other end portion 12c side (see FIG. 3).

  On the outer periphery of the through-hole 12a of the lift arm 12, a circular bead 12e having a convex shape is formed. The inner surface of the inner end portion 15a of the first equalizer arm 15 is in slidable line contact with the circular bead 12e.

  The circular bead 12e has a size passing through the vicinity of both side edges 12f in the width direction W perpendicular to the longitudinal direction L of the lift arm 12. In other words, the diameter of the circular bead 12e is set to a value slightly larger than the diameter of the through hole 12a of the lift arm 12.

  The height of the circular bead 12e is set to be substantially the same as that of the one principal surface 13a of the plug plate 13. Specifically, the sum of the plate thickness of the lift arm 12 and the height of the circular bead 12 e is set to be the same as the plate thickness of the plug plate 13. For example, when the plate thickness of the plug plate 13 is set to 2 mm and the plate thickness of the lift arm 12 is set to 1.6 mm, the protruding height of the circular bead 12e is set to 0.4 mm.

  The lift arm 12 has first and second vertical beads 12g and 12h extending from the circular bead 12e toward the one end 12b and the other end 12c in the longitudinal direction L from the positions where the gaps t2 and t1 are formed, respectively. Is formed. The gaps t2 and t1 are provided to avoid interference with the first and second vertical beads 12g and 12h when the first and second equalizer arms 15 and 16 are rotated.

  The first and second vertical beads 12g and 12h have a height larger than the protruding height of the circular bead 12e. Specifically, the first and second vertical beads 12g and 12h have a height of about 3 mm with respect to the general surface 12 'of the lift arm 12.

  The first vertical bead 12 g is formed by stepping down both longitudinal side portions 12 j and 12 j to the opposite side of the first equalizer arm 15 with respect to the general surface 12 ′ of the lift arm 12.

  On the other hand, the second vertical bead 12 h is formed by bulging the central portion 12 k to the opposite side of the second equalizer arm 16 with respect to the general surface 12 ′ of the lift arm 12. A concave bead 12m is formed on the other end 12c side of the second vertical bead 12h.

  The circular bead 12e is subsequently formed with two extended beads 12i and 12i extending and extending toward the second vertical bead 12h. Note that the circular bead 12e is partially broken, and more precisely, it is an arc beam, but this broken portion is compensated by a part 12i 'of the extended bead 12i. The circular bead includes a part of which is broken in this way.

  Each extension bead 12i is formed so as to pass outside the inner end portion 12h ′ of the second vertical bead 12h, and when viewed in the width direction W, the inner extension of the second vertical bead 12h surrounds the gap t1. It overlaps with the end 12h ′.

  Further, the first vertical bead 12g is formed with two extended beads 12n and 12n that extend and extend toward the circular bead 12e.

  Each extension bead 12n is formed so as to pass outside the circular bead 12e, and when viewed in the width direction W, it overlaps with a part 12e 'of the circular bead 12e so as to surround the gap t2.

  According to this embodiment, the circular bead 12e is formed on the outer periphery of the through hole 12a of the lift arm 12, and extends from the position separated from the circular bead 12e by t1 and t2 toward the longitudinal ends 12b and 12c, respectively. The first and second vertical beads 12g and 12h are formed, and the extended bead 12i extending so as to overlap the second vertical bead 12h in the width direction W is formed following the circular bead 12e.

  With this configuration, it is possible to reduce the plate thickness to the minimum necessary thickness while ensuring the rigidity required for the lift arm 12, contributing to the weight reduction and cost reduction of the entire window regulator device. As a result, it becomes possible to meet the demand for lower prices for small cars.

  Further, the first and second vertical beads 12g and 12h are protruded toward the opposite sides of the first and second equalizer arms 15 and 16, and the height is made larger than the circular beads 12e. While preventing the vertical beads 12g and 12h from interfering with the equalizer arms 15 and 16 during the movement, the rigidity of the entire lift arm can be further enhanced.

  In this embodiment, since the circular bead 12e is formed so as to be substantially the same height as the one main surface 13a of the plug plate 13, the plate with the plug plate 13 when the thickness of the lift arm 12 is reduced. The difference in thickness can be absorbed by the circular bead 12e, and the height of the lift arm in the plate thickness direction is higher than that in the case where the curl portion is formed on the lift arm and the bead higher than the curl portion is formed as in the prior art. The size can be reduced, and the overall size of the window regulator device can be avoided. As a result, the window regulator device 1 can be mounted without increasing the vehicle width dimension of the door, and as a result, it can be adopted for a small vehicle in which the vehicle width dimension of the door is restricted.

  In this embodiment, since the circular bead 12e is sized to pass through the vicinity of both edges 12f in the width direction W of the lift arm 12, the contact width with the equalizer arm 15 can be increased, and the equalizer arm 15 can be A stable rotation operation can be obtained without causing rattling or the like. That is, in the case of the above-described conventional structure, since the bead width of the lift arm is narrow, the contact area with the equalizer arm is also small, and both are slid due to surface contact, and rattling is likely to occur. Yes.

  In this embodiment, since the extended bead 12i extending so as to overlap the second vertical bead 12h in the width direction W is formed on the circular bead 12e, the circular bead 12e and the vertical bead on which the stress of the lift arm 12 is most easily concentrated. Rigidity at the gap t1 with 12h can be ensured, and the plate thickness of the lift arm 12 can be further reduced. For example, when an extension bead and a vertical bead having different heights are formed on the lift arm so as to be continuous, the change point of the height of both beads becomes a breaking point, which is disadvantageous in strength. On the other hand, in the present embodiment, the extension bead 12i is provided so as to overlap the third vertical bead 12h in the width direction W, so that no break occurs even if the bead height is different. It can be avoided that it becomes a starting point of plastic deformation due to an external force.

  In the present embodiment, since the extended bead 12n extending so as to overlap the circular bead 12e in the width direction W is formed on the first vertical bead 12g, the gap between the first vertical bead 12g of the lift arm 12 and the circular bead 12e. The rigidity at the t2 portion can be ensured, and the same effect as described above can be obtained.

  6 and 7 are diagrams for explaining an experiment conducted to confirm the effect of the present embodiment.

  In this experiment, as shown in FIGS. 6A and 6B, a lift arm b of the present embodiment having a plate thickness of 1.6 mm and a comparative example lift arm a having a plate thickness of 2 mm are compared. The section modulus in each AA line section-FF line section was examined. Here, the section of the lift arm taken along line AA to line FF concentrates the weight of the windshield, the force that causes plastic deformation when the windshield is fully closed, and the rotational driving force from the drive motor. It is a part which is easy to do, and is a part where rigidity is particularly required.

  FIG. 7 is a characteristic diagram showing the experimental results. As is clear from the figure, the lift arm b of the present embodiment has a smaller section modulus in the cross section along the line AA to EE, because the plate thickness is smaller than that of the lift arm a of the comparative example. Necessary rigidity is secured. On the other hand, when the sectional modulus in the section taken along the line FF is seen, it can be seen that the sectional modulus of the lift arm b of this embodiment is larger than the sectional modulus of the lift arm a of the comparative example. This is considered to be effective by forming the extended bead so as to overlap the vertical bead following the circular bead.

  Thus, in this embodiment, the required rigidity is obtained even if the plate thickness of the lift arm is reduced, and the rigidity at the FF line break point where stress is most concentrated is higher than that of the conventional structure. Can be increased.

DESCRIPTION OF SYMBOLS 1 Window regulator apparatus 2 Window glass 3 Lift arm bracket 11 Actuator 12 Lift arm 12a Through-hole 12b One end part 12c Other end part 12e Circular bead 12f Side edge 12g, 12h Vertical bead 12i, 12n Extension bead 13 Plug plate 13a One main surface 13b Other main surfaces 15, 16 First and second equalizer arms L Longitudinal direction W Width direction

Claims (1)

One end in the longitudinal direction is connected to the lift arm bracket that supports the window glass, the other end is connected to the actuator, and the through hole formed in the longitudinal center of the lift arm is disposed so as to be relatively rotatable. A window regulator device for a vehicle door comprising first and second equalizer arms coupled to one main surface and the other main surface of the plug plate and extending so as to intersect the lift arm,
A circular bead having a size passing through the vicinity of both edges in the width direction perpendicular to the longitudinal direction of the lift arm is formed on the outer periphery of the through hole of the lift arm so that the first equalizer arm is in sliding contact with the longitudinal direction of the lift arm. It is formed to be approximately the same height as the main surface,
The lift arm is formed with a vertical bead extending from the position away from the circular bead to the end through the longitudinal center line,
Each vertical bead protrudes toward the opposite side of the first and second equalizer arms and has a height greater than the protruding height of the circular bead;
An extension bead extending so as to overlap the other bead in the width direction is formed on either the vertical bead or the circular bead.

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