JP2006045981A - Base plate of arm type window regulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a pinion accommodating section from cracking even if an excessively large force is applied to the pinion accommodating section due to "deflection" occurring in the restraint state at the bottom dead center. <P>SOLUTION: A first step section 25 protruded from a base face 24, a second step section 26 protruded from the center part of the first step section 25 by press working and two bead sections 27 and 27 sandwiching the second step section 26 and protruded by press working to a height lower than the second step section along the circumference 28a of a communicating hole 28 are formed in the vicinity of the pinion accommodating section of the base plate 20. The circumference 28a of the communicating hole 28 is curved to enter the bead section 27 in the bead section and its vicinity. With regard to the protruding heights of the beads 27 and 27 at arbitrary two points on a virtual line from the first step section 25 to the second step section 26, the height at the first step section 25 side is lower than the height at the second step section side 26 side, and the virtual line nearer to the circumference 28a of the communicating hole has more uniform change rates of the protruding height at the points on the same virtual line. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a base plate for an arm type window regulator.

X arm type and single arm type arm type window regulators are well known.
For example, Japanese Patent Application Laid-Open No. 9-119261 describes an example of an X-arm type window regulator (see Patent Document 1).
Japanese Patent Application Laid-Open No. 2003-301660 describes an example of a single arm type window regulator (see Patent Document 2).
JP-A-9-119261. JP2003-301660A.

  FIG. 6 shows a conventional base plate 20A used for an arm type power window regulator, (c) is a front view seen from the inner panel side to which the base plate 20A is attached, (a) is an arrow view A- in (c). A sectional drawing, (b) is an arrow B side view to the AA line of (c). 3 shows an example of an X-arm type power window regulator, and FIG. 4 is an enlarged view showing a main part (near the base plate) of FIG. Note that the window regulator shown in FIG. 3 (and FIG. 4) can use either the conventional base plate or the base plate of the present invention as the base plate.

First, the X arm type window regulator will be briefly described.
As shown in FIG. 6, a circular through hole 29 is provided near one end of the base plate 20A (the right end in FIG. 6C), and a stepped pin (not shown) is provided in the circular through hole 29. Is inserted and is rotatably supported. Since this stepped pin is engaged with the base end portion of the lift arm 50 (FIGS. 3 and 4) on the back surface side of the paper in FIG. 6 (one side of the claims), the stepped pin rotates. As a result, the lift arm 50 also rotates together.
As shown in FIG. 3, a driven gear 60 is integrally fixed to the lift arm 50 at the base end portion of the lift arm 50 by welding or the like. The driven gear 60 is meshed with a pinion 92 provided on a handle shaft 91 that is rotated by an operation motor 90, and is driven to rotate as the motor 90 rotates. The pinion 92 is accommodated on the paper surface side (the other surface side of the claims) in FIG. 6, but the back surface side and the surface side (the one surface side and the other surface side of the claims) communicate with the base plate 20A. A communication hole 28 is provided, and the driven gear 60 enters the other side through the communication hole 28, so that the engagement with the pinion 92 is possible.

A roller 501 is provided at the other end (upper right end in FIG. 3) of the lift arm 50. This roller 501 is attached to a guide 70 provided at a bracket (not shown) at a lower end portion of a window glass (not shown). Engage and move horizontally.
A spindle 52 that penetrates the lift arm 50 is rotatably provided at a substantially central portion of the lift arm 50. A first equalizer arm 55 extending in the direction of the guide 70 is fixed to one end of the spindle 52 (the back side in FIG. 3), and a door is attached to the other end (the front side in FIG. 3). A second equalizer arm 56 extending in the direction of the fixed guide 80 is fixed to the main body (not shown). That is, the first and second equalizer arms 55 and 56 are integrated via the spindle 52.
At the tip of the first equalizer arm 55, a roller 551 that is engaged with the guide 70 and is movable in the horizontal direction is provided. A roller 561 that is engaged with the guide 80 and is movable in the horizontal direction is provided at the tip of the second equalizer arm 56.

  In the window regulator having such a configuration, when the motor 90 is driven to rotate the handle shaft 91 (FIG. 3B), the rotation is transmitted to the driven gear 60 through the pinion 92, and the lift arm 50 is moved. Rotate. As a result, the window glass is raised / lowered.

  When the window glass descends to the bottom dead center, the driven gear 60 and the pinion 92 are in a restrained state, and a force in the vehicle width direction (a direction perpendicular to or intersecting with the paper surface in FIG. 4) is applied between them. As a result, excessive force concentrates on the portion supporting the pinion 92 and the motor 90 (pinion housing portion of the base plate 20A). In other words, when the window glass descends to reach the bottom dead center, a so-called “tilt” is generated, and an excessive force is applied to the vicinity of the pinion housing portion of the base plate 20A.

As shown in FIG. 6, the vicinity of the pinion housing portion of the conventional base plate 20 </ b> A is formed from a first step portion 25 formed by pressing from the base surface 24 toward the paper surface side, and a center portion of the first step portion 25. The projecting height of the second step portion 26 that is projected and formed in the direction of the surface of the paper surface by the press and the second step portion 26 (= the central portion of the first step portion 25) along the edge 28a of the communication hole 28 is provided. It consists of two bead portions 27A and 27A that are formed so as to protrude from the first step portion 25 in the direction of the surface of the paper surface with a press so that the height is lower than the second step portion 26.
Here, the first step portion 25 is provided so that the driven gear 60 supported by the base plate 20A in parallel with the base surface 24 on the back surface side of the paper surface can enter the paper surface surface side through the communication hole 28 in a parallel state. Stepped. In other words, the step portion is provided so as to ensure a step corresponding to the approximate thickness of the driven gear 60. The second step portion 26 is a step portion provided for securing a space for accommodating the pinion 92 and the motor 90 between the base plate 20A and the inner panel.

As described above, the three steps of the first step portion 25, the bead portion 27A, and the second step portion 26 are formed by pressing near the pinion housing portion of the base plate 20A. On the other hand, the tops of the steps 25, 27A, 26 are flat as shown in FIG. For this reason, the boundary between the rising part and the top of each step part has an angular shape and is thin.
When an excessive force due to the above-mentioned “AORI” is applied in the vicinity of the pinion housing part, the force is applied particularly to the boundary part between the rising part and the top part of the thin bead part 27A, and in the worst case, the part is cracked. It comes to occur. A portion where a crack is likely to occur is indicated by a symbol “CR” in FIG.
Even when the conventional base plate 20A is used for a single arm type window regulator, an excessive force is applied to the base plate 20A due to the “tilting” in the same manner as described above, and in the worst case, the portion indicated by the symbol “CR” in FIG. Cracks will occur in the vicinity.

  The present invention increases the rigidity of the stepped portion of the pinion housing portion of the base plate with a simple configuration without changing the configuration of the inner panel and without greatly changing the configuration of the base plate. Even if an excessive force is applied to the step portion, it is intended to prevent the portion from cracking.

The present invention is configured as described in [1] below.
[1] Configuration 1:
(A) A base end portion of the lift arm is rotatably supported on one surface side near one end portion, and is attached to the base end portion of the lift arm on the other surface side near the other end portion to the other surface side from the communication hole. A base plate of an arm type window regulator that supports a pinion and a drive motor that mesh with an invading driven gear,
(B) In the portion closer to the other end portion from the other end side edge of the communication hole,
(C) a first step formed by pressing from the base surface to the one surface side;
(D) a second step portion formed to project from the center portion of the first step portion to the one surface side by a press;
(E) Two beads that are formed to protrude from the first step portion to the one surface side lower than the second step portion by pressing from the first step portion at a portion along the edge of the communication hole with the central portion of the first step portion interposed therebetween. And
Have
(F) An edge shape of the communication hole in the vicinity of each bead portion is a boundary between the bead portion and the second step portion through a bead portion from a boundary portion between the base surface and the first step portion, respectively. It is formed in a curved shape that swells in the direction of the other end in the range leading to the part,
(G) Each of the bead portions has a protruding height at any two points on each imaginary line from the first step portion to the second step portion so that the first step portion side is more than the second step portion side. Low, and the rate of change of each point on the same imaginary line is more uniform as the imaginary line is closer to the edge of the communication hole,
A base plate characterized by that.

  With reference to FIG.1 (c) and FIG.5 (a) (b), the structural requirements (f) and (g) of the said structure 1 are demonstrated. FIG. 1C is a front view of the base plate 20 viewed from the inner panel side to which the base plate 20 is attached, and FIG. 5A is a view of the vicinity of the bead portion 27 of the base plate 20 from the same direction as FIG. Front view) Schematic view, FIG. 5B is a schematic view of FIG.

In each figure, 25 is a first step portion, 26 is a second step portion, and 27 is a bead portion.
“The shape of the edge 28a of the communication hole 28 in the vicinity of each bead portion 27/27 is the shape requirement (f), and the shape of the edge 28a from the boundary between the base surface 24 and the first step portion 25/25 passes through the bead portion 27. “It is formed in a curvilinear shape that swells in the direction of the other end (to the left end in FIG. 1C) within the range reaching the boundary between the bead portion 27 and the second step portion 26/26”. As shown in FIG. 4, the edge 28a of the communication hole 28 passes from the vicinity of the boundary between the base surface 24 and the first step portion 25/25 to the boundary between the bead 27 portion and the second step portion 26/26 via the bead portion 27/27. In this range, the arc is formed in a substantially arc shape when viewed from the front, and the arc is formed so as to enter in the direction of the bead portion 27. The substantially arc shape may be an arc shape, but may not necessarily be an accurate arc shape, and refers to a shape in which the center of curvature is on the communication hole 28 side.

  Component requirement (g) “projection height at any two points on each imaginary line from the first step portion 25 to the second step portion 26 is lower on the first step portion 25 side than on the second step portion 26 side” Is that an imaginary line from the first step portion 25 to the second step portion 26 is arbitrarily drawn, and two points are arbitrarily plotted on any imaginary line, the first step portion 25 side is second in any two points. It is lower than the step 26 side. In other words, it means that the protruding height of the portion where each virtual line is located monotonously increases from the first step portion 25 side toward the second step portion 26. In FIG. 5, three straight lines p, q, and r are illustrated as virtual lines, but this may be a curved line. However, it is a requirement to always go from the first step portion 25 to the second step portion. In other words, after going from the first step portion 25 to the second step portion, the curve including the “return portion” that once turns back to the first step portion 25 direction and then goes again to the second step portion 26 direction is excluded. It shall be.

  The change rate of each point on the same imaginary line (= inclination) means that the change rate of each point on each imaginary line is more uniform in the imaginary line closer to the edge 28a of the communication hole in the component requirement (g). Means that the imaginary line relatively closer to the edge 28a of the communication hole becomes more uniform (= asymptotic to a straight line). For example, the rate of change (= inclination) of each point on the virtual line p relatively far from the edge 28a of the communication hole is larger as it is closer to the first step portion 25, and is further away from the first step portion 25 (= second step). And the change rate (= slope) of each point on the same imaginary line is greatly different. On the other hand, the rate of change (= inclination) of each point on the virtual line r relatively close to the edge 28a of the communication hole is substantially uniform at each point from the first step portion 25 to the second step portion 26. And has a shape closer to a straight line than the virtual line p (or q) relatively far from the edge 28a of the communication hole.

In the example of FIG. 5B, each virtual line has a convex shape. That is, the rate of change (= inclination) of each point on the same imaginary line is larger as it is closer to the first step portion 25 and becomes smaller as it is farther from the first step portion 25 (= closer to the second step portion 26). is doing. Incorporating this into the configuration requirement (g), “the protruding height at any two points on each imaginary line from the first step portion 25 to the second step portion 26 is the second step portion on the first step portion 25 side. The rate of change in the projected height of each point on the same imaginary line that is lower than the portion 26 side is uniform in the imaginary line closer to the edge 28a of the communication hole, and the projection of each point on each imaginary line is uniform. It can be described that the rate of change in the installation height is greater as it is closer to the first step 25.
When each imaginary line has a concave shape, that is, the rate of change (= inclination) of each point on the same imaginary line is smaller as it is closer to the first step portion 25 and is further away from the first step portion 25 (= second step portion). In the case of forming a shape that increases as it approaches 26), the component requirement (g) is set as follows: “Projection heights at any two points on each imaginary line from the first step portion 25 to the second step portion 26 are The first step portion 25 side is lower than the second step portion 26 side, and the rate of change in the protruding height of each point on each same imaginary line is more uniform in the imaginary line closer to the edge 28a of the communication hole, and The change rate of the protruding height at each point on the same imaginary line is smaller as it is closer to the first step portion 25 ”.
The virtual line group is preferably a line group drawn by parallel movement, and more preferably a parallel straight line group. In particular, a line group or a straight line group with a constant interval is desirable.

  The base plate 20 of Configuration 1 supports the base end of the lift arm 50 on one side near the one end so as to be rotatable, and is attached to the base end on the other side near the other end and is connected to the base end of the lift arm 50. The pinion 92 and the drive motor 90 that mesh with the driven gear 60 that intrudes into the other surface from the other end side of the communication hole 28 from the other end side edge 28a to the other end side portion, A first step portion 25 formed by pressing from the surface 24 to the one surface side, a second step portion 26 protruding from the central portion of the first step portion 25 to the one surface side, and a first step 2 formed by projecting from the first step portion 25 to the one surface side lower than the second step portion by pressing from the first step portion 25 at a portion along the edge 28a of the communication hole 28 with the center portion (= second step portion 26) of the step portion 25 interposed therebetween. Each bead portion 27, 27, near each bead portion 27, 27 The shape of the edge 28a of the communication hole 28 is such that the boundary portion between the bead portion 27 and the second step portions 26, 26 from the boundary portion of the base surface 24 and the first step portions 25, 25 through the bead portion 27, respectively. The bead portions 27 and 27 are projected at arbitrary two points on each imaginary line extending from the first step portion 25 to the second step portion 26. Since the first step portion 25 side is lower than the second step portion 26 side and the rate of change of each point on the same imaginary line is more uniform in the imaginary line closer to the edge 28a of the communication hole, Even if an excessive force due to “aori” is applied in the vicinity of the step portions 25, 26, and 27 in the restraint state of FIG.

The configuration of the X-arm type window regulator having the lift arm 50, the driven gear 60, the motor 90, the pinion 92, and the like is the same as that described in the section “Problems to be Solved by the Invention”. Omitted.
In the single-arm type window regulator as well, the vicinity of the base plate that is directly related to the gist of the present invention is the same as that described in the section “Problems to be solved by the invention”, and other parts are well known. Therefore, explanation is omitted.
Hereinafter, a description will be given focusing on differences from the conventional base plate 20A.
FIG. 1 shows a base plate 20 embodying the present invention, (c) is a front view seen from the inner panel side, (a) is a cross-sectional view taken along line AA in (c), and (b) is ( c) Arrow B side view to the AA line in (d), arrow D side view to the EE line in (c), (e) is the EE line in (c). An arrow sectional view, (f) is an arrow F bottom view to GG line in (c), (g) is a GG arrow sectional view in (c). 2 (a) and 2 (b) are perspective views as seen from the base plate 20 inner panel side of FIG.

  As shown in the drawing, in the vicinity of the pinion housing portion, a first step portion 25 formed by pressing from the base surface 24 toward the paper surface side, and a press from the center of the first step portion 25 toward the paper surface surface side. The projecting height of the projecting second step portion 26 and the second step portion 26 (= the central portion of the first step portion 25) is sandwiched between the second step portion 26 along the edge 28a of the communication hole 28. It consists of two bead portions 27, 27 that are formed so as to protrude from the first step portion 25 in the direction of the surface of the paper with a press so as to be lower.

The first step portion 25 and the second step portion 26 are substantially the same as the conventional base plate 20A, but the shape near the bead portion 27 is different from the conventional base plate 20A.
That is, in the vicinity of the bead portion 27 of this example, the edge 28a of the communication hole 28 passes from the vicinity of the boundary between the base surface 24 and the first step portion 25/25 through the bead portion 27/27, and the bead 27 portion and the second step portion. In a range extending to the vicinity of the 26/26 boundary, a substantially arc shape is formed in a front view, and the arc is formed so as to enter the direction of the bead portion 27.
In addition, the bead portion 27 of the present example is such that the projecting height at any two points on any imaginary line drawn from the first step portion 25 to the second step portion 26 is the first step portion 25. The near side is formed so as to be always lower than the side near the second step portion 26.
Further, the rate of change of each point on an arbitrary virtual line drawn as described above is formed so that the virtual line closer to the edge 28a of the communication hole becomes uniform.
Furthermore, the change rate of the protruding height of each point on the same imaginary line drawn as described above is larger as it is closer to the first step portion 25 and is further away from the first step portion 25 (= second step portion 26). It is formed in a convex shape so as to decrease as it approaches.
In other words, the bead portion 27 of this example is asymptotic to a linear shape as the cut surface at an arbitrary virtual straight line drawn from the first step portion 25 toward the second step portion 26 is closer to the edge 28a of the communication hole. . On the other hand, on the far side far from the edge 28a of the communication hole, the closer to the end on the far side, the cut surface shape in the virtual straight line drawn similarly with respect to the conventional bead part 27A (= rise part and flat top part) The shape is such that the boundary with the angle is close to that of FIG. 6A.
The base plate 20 having such a configuration is attached to an inner panel (not shown; disposed on the upper side in FIG. 1) at the bolt holes 23a to 23d provided at the four corners.

The base plate 20 of embodiment is shown, (c) is the front view seen from the inner panel side, (a) is the sectional view on the AA line arrow of (c), (b) is the arrow B of (c). Side view, (d) is a side view of arrow D in (c), (e) is a cross-sectional view along arrow EE in (c), (f) is a bottom view of arrow F in (c), (g) ) Is a cross-sectional view taken along line GG in (c). The base plate 20 of embodiment is shown, (a) is the perspective view seen from the inner panel side, (b) is a part of the perspective view seen from the direction different from (a). 1 shows an X-arm type power window regulator provided with the base plate 20 of FIG. 1 (or the base plate 20A of FIG. 6), (a) is a front view seen from the inner panel side, and (b) is a bottom view of arrow B in (a). Figure. The principal part enlarged view which expands and shows the base plate vicinity in Fig.3 (a). Explanatory drawing of the relationship between the position of the virtual line assumed to the principal part (1st step part 25-2nd step part 27 vicinity) of the base plate of FIG. 1, and protrusion height. The conventional base plate 20A is shown, (c) is a front view seen from the inner panel side, (a) is a cross-sectional view taken along the line AA in (c), and (b) is a side view taken along the arrow B in (c). .

Explanation of symbols

DESCRIPTION OF SYMBOLS 20 Base plate 20A Conventional base plate 24 Base surface 25 First step part 26 Second step part 27 Base plate bead part 27A Embodiment base plate bead part 28 Communication hole 28a Communication hole edge 29 Through hole 50 Lift arm 60 Driven gear 90 Motor 92 Pinion

Claims (1)

A driven gear that rotatably supports the base end portion of the lift arm on one surface side near the one end portion, and is attached to the lift arm base end portion on the other surface side near the other end portion and enters the other surface side from the communication hole. A base plate of an arm type window regulator that supports a pinion and a drive motor meshing with each other,
In the part near the other end part from the edge on the other end part side of the communication hole,
A first step formed by pressing from the base surface to the one surface side,
A second step portion formed to protrude from the center portion of the first step portion to the one surface side by a press;
Two bead portions projecting from the first step portion to the one surface side lower than the second step portion by pressing from the first step portion at a portion along the edge of the communication hole across the central portion of the first step portion;
Have
The edge shape of the communication hole in the vicinity of each bead portion extends from the boundary portion between the base surface and the first step portion to the boundary portion between the bead portion and the second step portion via the bead portion. It is formed in a curved shape that swells toward the other end in a range,
Each of the bead portions has a protruding height at any two points on each imaginary line from the first step portion to the second step portion, the first step portion side being lower than the second step portion side, and The rate of change of each point on each same virtual line is more uniform as the virtual line is closer to the edge of the communication hole.
A base plate characterized by that.

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