JP2016118053A - Window regulator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a window regulator capable of reducing the weight of an arm.SOLUTION: A window regulator 1 includes a drive unit 20, a base plate 24 attached with the drive unit 20, a sector gear 27 rotating to the base plate 24, and an arm 10 integrally rotating with the sector gear 27. The arm 10 includes a plate-shaped inner extension part 11 extending in a longitudinal direction at a center portion in a width direction, and a pair of outer beads 12 formed on both ends in the width direction. The outer bead 12 has a tilt portion 120 on the end in the width direction of the arm 10, and the tilt portion 120 of the outer bead 12 extends to a base end 10a side of the arm 10 rather than a position in the longitudinal direction of a fixing portion 11c.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a window regulator that raises and lowers a window glass provided on a vehicle door.

  A window regulator that raises and lowers a window glass by a driving force of a driving motor is frequently used in a vehicle door. As this type of window regulator, there is a single-arm type window regulator that lifts and lowers a window glass only with a single arm (see, for example, Patent Document 1).

  The arm (lift arm) in the window regulator described in Patent Document 1 has a hat shape including a concave portion extending in the longitudinal direction and a flat collar portion that is bent and protrudes horizontally from the side wall of the concave portion toward the outside. It has a cross section. At the base end portion of the arm, a convex portion protruding in the direction opposite to the concave direction of the concave portion is formed. According to this configuration, it is said that even if the plate thickness of the arm is thin, bending rigidity and torsional rigidity can be increased at the hat-shaped cross-section, and the weight of the window regulator can be reduced.

JP 2001-55864 A

  Since the flat collar portion of the arm is bent horizontally and protrudes outward from the side wall of the recess, when the window glass is moved up and down by the driving force of the drive motor, a certain level of stress is applied to the flat collar portion. When acting on, the strength and rigidity of the flat collar portion may be insufficient. For this reason, it has been restricted to reduce the thickness of the arm, which hinders the promotion of weight reduction of the arm.

  Therefore, an object of the present invention is to provide a window regulator capable of reducing the weight of the arm.

  In order to solve the above problems, the present invention is a window regulator for opening and closing a window glass provided on a door of a vehicle, wherein the drive unit generates a driving force for moving the window glass up and down, and the drive unit is attached to the window regulator. And a sector gear that rotates with respect to the base plate in response to the driving force of the drive unit, one end in the longitudinal direction is connected to the window glass, and the other end is connected to the base plate, A long plate-like arm that rotates integrally with the sector gear, and the arm is formed at a plate-like inner extending portion that extends in the longitudinal direction at a central portion in the width direction and at both ends in the width direction. A fixed portion for fixing the sector gear to the inner extension portion, and the outer bead portion is inclined with respect to the inner extension portion. A window regulator in which the inclined portion is formed at an end portion in the width direction of the arm, and the inclined portion extends to the other end portion side of the arm from a position in the longitudinal direction of the fixed portion. I will provide a.

  According to the present invention, the weight of the arm can be reduced.

It is the schematic when the window regulator in embodiment of this invention is seen from the outer panel side which comprises the outer plate | board of a door. It is the schematic when the window regulator in this Embodiment is seen from the inner panel side which comprises the inner plate of a door. (A) is a plan view of an arm which is one component of the window regulator in the present embodiment, (b) is a side view of the arm shown in (a), and (c) is a CC line of (a). It is line sectional drawing, (d) is the DD sectional view taken on the line of (a), (e) is the EE sectional view taken on the line of (a). (A) is a stress distribution figure which shows the analysis result of the stress distribution which acts on the arm which concerns on a comparative example, (b) is the FF sectional view taken on the line of Fig.4 (a), (c) is It is a stress distribution figure which shows the analysis result of the stress distribution which acts on the arm in this Embodiment.

  Hereinafter, the configuration and operation of the window regulator according to the present embodiment will be described with reference to FIGS.

  FIG. 1 is a schematic view of the window regulator according to the present embodiment as viewed from the outer panel side constituting the outer plate of the door, and FIG. 2 constitutes the inner plate of the door according to the present embodiment. It is the schematic when it sees from an inner panel side.

  The window regulator 1 is used to open and close a window glass 2 provided on a vehicle door (not shown). The window glass 2 can be moved up and down along the door sash, and the window regulator 1 is disposed inside the door.

  The window regulator 1 includes an arm 10 and a drive unit 20 that rotationally drives the arm 10. The window regulator 1 is a power type window regulator that automatically moves the window glass 2 up and down by the drive unit 20.

  The arm 10 is a long plate-like member formed by press-molding a metal plate, and a distal end portion 10 b that is one end portion in the longitudinal direction is connected to the window glass 2 via a slider 3. The slider 3 is mounted so as to be movable along the longitudinal direction of the guide rail 4 fixed to the lower end of the window glass 2. A base end portion 10 a that is the other end portion of the arm 10 in the longitudinal direction is connected to a plate-like base plate 24 via a support shaft 28, and is attached to the base plate 24 so as to be rotatable about the support shaft 28. .

  The drive unit 20 includes an electric motor 21 and a speed reducer 22. The speed reducer 22 includes a worm gear mechanism, and a gear case 23 that accommodates the worm gear mechanism is fixed to the base plate 24.

  A fan-shaped sector gear 27 made of a steel plate material is supported on the base plate 24 via the arm 10 so as to be rotatable about a support shaft 28. A gear portion 27 a that meshes with an unillustrated pinion gear fixed to the output shaft 25 of the speed reducer 22 is formed on the outer peripheral portion of the sector gear 27. The sector gear 27 is fixed to a fixing portion 11c formed on the arm 10 by fixing means such as welding, and is connected to rotate integrally with the arm 10.

  When electric current is supplied to the electric motor 21, the sector gear 27 rotates around a support shaft 28 within a predetermined angle range via a pinion gear (not shown) that is decelerated and rotated by the speed reducer 22. Then, the rotational force of the sector gear 27 is transmitted to the arm 10, and the arm 10 rotates about the support shaft 28. With this rotation, the window glass 2 opens and closes in the vehicle vertical direction.

(Whole structure of arm)
3A and 3B show the arm 10, in which FIG. 3A is a plan view, FIG. 3B is a side view, FIG. 3C is a sectional view taken along the line C-C in FIG. Sectional drawing and (e) are the EE sectional view taken on the line of (a).

  The arm 10 integrally has a plate-like inner extending portion 11 extending in the longitudinal direction at a central portion in the width direction and a pair of outer bead portions 12 formed at both end portions in the width direction. A fixed portion 11 c to which the sector gear 27 is fixed is formed in the inner extending portion 11. The entire arm 10 is formed in a shape in which the width dimension is gradually reduced from the base end portion 10a in the longitudinal direction to the tip end portion 10b.

  The inner extending portion 11 of the arm 10 is bent stepwise toward the outer panel side that constitutes the outer plate of the door. More specifically, the inner extending portion 11 includes first to fourth inner bent portions 111 to 114 that form folds composed of mountain folds and valley folds. It has 1st thru | or 5th inner side flat plate parts 115-119 bent in the step shape via the inner side bending parts 111-114 in the longitudinal direction. The 1st inner side flat plate part 115 is located in the base end part 10a side, and the 5th inner side flat plate part 119 is located in the front-end | tip part 10b side.

  Of the first to fifth inner flat plate portions 115 to 119, the first, third, and fifth inner flat plate portions 115, 117, and 119 are formed on different parallel surfaces. The second and fourth inner flat plate portions 116 and 118 are formed on slopes inclined toward the outer panel with respect to the first, third and fifth inner flat plate portions 115, 117 and 119.

  The first inner flat plate portion 115 is formed with a support portion circular hole 11a penetrating at a position corresponding to the support shaft 28 of the base plate 24. In the third inner flat plate portion 117, the fixing portion 11c is formed as a protrusion protruding toward the back surface 11e at a position corresponding to the fixing portion 11c for fixing the sector gear 27. A circular hole 11b through which the slider 3 is rotatably mounted is formed through the tip side of the fifth inner flat plate portion 119.

  The outer bead portions 12 are respectively formed at both end portions in the width direction of the third to fifth inner flat plate portions 117 to 119 of the inner extending portion 11 in the arm 10. Further, the position of the outer bead portion 12 in the vehicle width direction (vertical direction in FIG. 3B) is equivalent to the fifth inner flat plate portion 119 of the inner extension portion 11, and the longitudinal direction of the arm 10 (FIG. 3). (A) and (b) in the left-right direction).

  Further, the outer bead portion 12 has an inclined portion 120 that is inclined with respect to the inner extending portion 11 at an end portion in the width direction of the arm 10. In the present embodiment, the inclined portion 120 is inclined with respect to the inner flat portion 11, and the first inclined portion 121 is inclined with respect to the inner flat portion 11, and the second inclined portion is inclined with respect to the inner flat portion 11 in the opposite direction to the first inclined portion 121. 122. The second inclined portion 122 is provided continuously outside the first inclined portion 121 and on the outer side in the width direction of the arm 10 than the first inclined portion 121.

  Between the outer bead portion 12 on the base end portion 10a side of the fourth inner bent portion 114 in the inner extending portion 11, the third inner flat plate portion 117, and the fourth inner flat plate portion 118, the third A wall portion 123 extending in the vehicle width direction from the inner flat plate portion 117 is formed. The wall portion 123 has a substantially parallelogram shape in a side view of the arm 10.

  Of the front and back surfaces of the inner extension portion 11, the surface that faces the outer panel of the door (the surface shown in FIG. 3A) is the front surface 11d, and the surface that faces the inner panel of the door is the back surface 11e. The portion 121 is inclined so as to go from the back surface 11e side to the front surface 11d side as it goes outward in the width direction of the arm 10, and the second inclined portion 122 is from the front surface 11d side to the back surface 11e side as it goes outward in the width direction of the arm 10. Inclined to head towards.

  The inclined portion 120 including the first inclined portion 121 and the second inclined portion 122 extends toward the base end portion 10 a side of the arm 10 with respect to the position of the fixed portion 11 c of the inner extending portion 11 in the longitudinal direction of the arm 10. Is formed. That is, when the arm 10 is viewed from the surface 11d side, the fixing portion 11c of the inner extension portion 11 is between the inclined portions 120 of the pair of outer bead portions 12 formed at both ends in the width direction of the arm 10. It is in.

  Further, the outer bead portion 12 is a concave groove that is recessed from the front surface 11d of the inner extension portion 11 toward the back surface 11e between the fifth inner flat plate portion 119 and the second inclined portion 122 of the inner extension portion 11. 13 and the first inclined portion 121 forms the side wall of the concave groove 13. More specifically, the concave groove 13 includes a bottom wall 13a, a first side wall 13b formed between the bottom wall 13a and the fifth inner flat plate portion 119 of the inner extending portion 11, and a first side wall 13b. The second side wall 13c sandwiching the bottom wall 13a between the first side wall 13b and a part of the first inclined portion 121 serves as the second side wall 13c.

  The concave groove 13 includes six concave portions 131 to 136, which are first to third shallow concave portions 131 to 133 and first to third deep concave portions 134 to 136 that are alternately arranged along the longitudinal direction of the arm 10. It has a formed structure. The depths of the first to third shallow recesses 131 to 133 with respect to the surface 11d of the inner extension portion 11 are 2 mm, for example, and the first to third deep recesses 134 to 136 with respect to the surface 11d of the inner extension portion 11 are, for example. The depth of is, for example, 3 mm.

  The arm 10 is formed in the vehicle width direction (the thickness direction of the arm 10) by alternately forming the first to third shallow recesses 131 to 133 and the first to third deep recesses 134 to 136. It is easy to bend. That is, since the window glass 2 of the vehicle is curved so as to swell outward from the passenger compartment, the arm 10 needs to bend in the vehicle width direction when the window glass 2 is opened and closed. In the present embodiment, the first to third shallow recesses 131 to 133 and the first to third deep recesses 134 to 136 are alternately formed, so that bending stress is applied to the boundary portion of each recess. It concentrates and bends smoothly in the vehicle width direction.

  In addition, the arm 10 is required to have high rigidity with respect to the force in the vertical direction (the width direction of the arm 10) so that the window glass 2 can be moved up and down reliably. In this Embodiment, the rigidity with respect to the force of an up-down direction is improved by forming the concave groove 13.

  Next, the effect of stress dispersion by the outer bead portion 12 when a force in the width direction is applied to the arm 10 will be described with reference to FIG. 4A is a stress distribution diagram showing an analysis result of a stress distribution acting on the arm 10A according to the comparative example, and FIG. 4B is a cross-sectional view taken along line FF in FIG. 4A. . FIG. 4C is a stress distribution diagram showing an analysis result of a stress distribution acting on the arm 10 in the present embodiment.

  In the arm 10A according to the comparative example, the shape of the outer bead portion 12 ′ is different from the shape of the outer bead portion 12 of the arm 10 according to the present embodiment. Specifically, the outer bead portion 12 of the arm 10 according to the present embodiment has the inclined portion 120 including the first inclined portion 121 and the second inclined portion 122, but the arm 10A according to the comparative example has the same structure. The outer bead portion 12 ′ has a flat plate shape in which a portion on the outer side in the width direction than the groove 13 is parallel to the inner extending portion 11. Further, the outer bead portion 12 according to the present embodiment extends to the base end portion 10a side of the position of the fixing portion 11c of the inner extension portion 11 in the longitudinal direction of the arm 10, whereas in the comparative example, The outer bead portion 12 'extends to a position closer to the distal end portion 10b than the position of the fixed portion 11c. Since the other portions of the arm 10A according to the comparative example are configured in the same manner as the arm 10 according to the present embodiment, the same reference numerals as those used in FIG. A duplicate description is omitted.

In FIG. 4A, the support shaft is inserted into the support portion circular hole 11a on the base end portion 10a side of the arm 10A according to the comparative example, the fixing portion 11c is fixed, and the end portion 10b of the arm 10A has a width direction (arrow). when a load is applied in the direction a) indicates a region S ₁ to a predetermined value or more stress is generated in the gray shaded. This arrow A direction corresponds to the direction of a load received from the window glass 2 when the window glass 2 is raised by the arm 10A.

In FIG. 4C, the support shaft is inserted into the support portion circular hole 11 a on the base end portion 10 a side of the arm 10 according to the present embodiment, the fixing portion 11 c is fixed, and the distal end portion 10 b of the arm 10 is fixed in the width direction. when a load is applied in (arrow a direction), it shows the area S ₂ of a predetermined value or more stress is generated in the gray shaded. Predetermined value of the stress is the same as the predetermined value of the stress in the region S ₁ shown in Figure 4 (a). The magnitude and direction of the load applied to the arm 10 are the same as the magnitude and direction of the load applied to the arm 10A according to the comparative example.

FIGS. 4 (a) and As is apparent from a comparison of FIG. 4 and (c), the area of the region S ₂ to a predetermined value or more stress in arm 10 of the present embodiment is generated, the arm 10A of the comparative example smaller than the area of a region S ₁ to a predetermined value or more stress is generated in. This is because the outer bead portion 12 is provided with the inclined portion 120, and the inclined portion 120 is extended to the base end portion 10a side with respect to the fixed portion 11c. This is considered to indicate that the deformation of the arm 10 in the vicinity of the fixed portion 11c is suppressed.

(Operation and effect of the embodiment)
By employing the window regulator 1 configured as described above, the following operations and effects can be obtained.

(1) Since the outer bead portion 12 of the arm 10 has the inclined portion 120, and this inclined portion 120 is formed to extend to the base end portion 10a side from the position in the longitudinal direction of the fixed portion 11c, the arm The rigidity at 10 can be improved. In particular, in the present embodiment, since the inclined portion 120 includes the first inclined portion 121 and the second inclined portion 122 that are inclined in directions opposite to each other with respect to the inner extending portion 11, the effect of increasing the rigidity is remarkable. It becomes. As a result, the arm 10 can be made thinner and lighter.

(2) Since the groove 13 is formed in the first to third shallow recesses 131 to 133 and the first to third deep recesses 134 to 136 alternately along the longitudinal direction of the arm 10, the arm 10 is easily bent in the vehicle width direction, and the rigidity in the vertical direction is increased.

  In the above-described embodiment, the configuration in which the outer bead portion 12 in the arm 10 has the concave groove 13 has been described. However, the present invention is not limited to this. For example, the outer bead portion 12 has the concave groove 13. You don't have to. That is, the outer bead portion 12 of the arm 10 has the first inclined portion 121 and the second inclined portion 122, and the first inclined portion 121 and the second inclined portion 122 are the fixing portions 11c of the inner extending portion 11 in the longitudinal direction. The effect similar to the above (1) can be obtained as long as it is formed to extend toward the base end portion 10a side of the arm 10 from the position.

  In the above embodiment, the arm 10 having a structure in which the shallow recesses 131 to 133 and the deep recesses 134 to 136 are alternately arranged is illustrated, but the number of the shallow recesses 131 to 133 and the deep recesses 134 to 136 installed. However, the present invention is not limited to this.

  In the above embodiment, the arm 10 in the single-arm type window regulator 1 is exemplified, but the present invention is not limited to this. For example, the present invention can be applied to a main arm or a sub arm in an X-arm type window regulator. Can do. Even in the X-arm type window regulator or the like, the same effect as the window regulator 1 according to the above embodiment can be obtained.

  Furthermore, in the above embodiment, only the case where the arm 10 is applied to a power type window regulator that is driven by the driving force of the electric motor 21 has been described. However, the present invention is not limited to this. For example, you may apply to the manual type window regulator which drives the arm 10 which concerns on the said embodiment by manual operation, such as a driver | operator.

  As is clear from the above description, typical embodiments, modifications, and illustrations of the present invention have been illustrated, but the above-described embodiments, modifications, and illustrations are inventions according to the claims. It is not intended to limit. Various modifications can be made without departing from the spirit of the present invention. Therefore, it should be noted that not all the combinations of features described in the above embodiments, modifications, and illustrated examples are necessarily essential to the means for solving the problems of the present invention.

DESCRIPTION OF SYMBOLS 1 ... Window regulator, 2 ... Window glass, 3 ... Slider, 4 ... Guide rail 10, 10A ... Arm, 10a ... Base end part, 10b ... Tip part, 11 ... Inner extension part, 11a ... Support part circular hole, 11b: circular hole, 11c: fixing part, 11d: front surface, 11e ... back surface, 12 ... outer bead part, 13 ... concave groove, 13a ... bottom wall, 13b ... first side wall, 13c ... second side wall, 20 ... Drive unit, 21 ... electric motor, 22 ... reducer, 23 ... gear case, 24 ... base plate, 25 ... output shaft, 27 ... sector gear, 27a ... gear part, 28 ... support shaft, 111-114 ... first to fourth Inner bent portion, 115 to 119, first to fifth inner flat plate portions, 120, inclined portion, 121, first inclined portion, 122, second inclined portion, 123, wall portion, 131-133, first to first. 3 shallow recesses, 134-136 The first to third deep recess

Claims (4)

A window regulator that opens and closes a window glass provided on a vehicle door,
A driving unit for generating a driving force for moving the window glass up and down;
A base plate to which the drive unit is attached;
A sector gear that rotates with respect to the base plate in response to the driving force of the driving unit;
One end in the longitudinal direction is connected to the window glass, the other end is connected to the base plate, and comprises a long plate-like arm that rotates integrally with the sector gear,
The arm has a plate-like inner extending portion extending in the longitudinal direction at a center portion in the width direction, and a pair of outer bead portions formed at both ends in the width direction, and the inner extension. A fixed portion is formed to which the sector gear is fixed,
The outer bead portion has an inclined portion that is inclined with respect to the inner extending portion at an end portion in the width direction of the arm, and the inclined portion is located on the arm more than a position in a longitudinal direction of the fixing portion. Formed to extend to the other end side,
Window regulator. The inclined portion of the outer bead portion includes a first inclined portion inclined with respect to the inner extending portion, and a second inclined portion inclined with respect to the inner extending portion in a direction opposite to the first inclined portion. Including
The second inclined part is provided on the outer side in the width direction of the arm than the first inclined part continuously to the first inclined part.
The window regulator according to claim 1. The outer beat portion has a concave groove that is recessed from one surface side of the inner extending portion toward the other surface side between the inner extending portion and the second inclined portion,
The first inclined portion forms a side wall of the groove.
The window regulator according to claim 2. The concave groove is constituted by a deep concave portion and a shallow concave portion having different depths, and the deep concave portion and the shallow concave portion are alternately arranged in the longitudinal direction of the arm.
The window regulator according to claim 3.

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