JP2009191588A - Looseness-absorbing device for window regulator-driving inner cable - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a looseness-absorbing device for window regulator-driving inner cable, capable of immediately absorbing, when a first inner cable and/or a second inner cable are loosened, the looseness, and compactly constituting the looseness-absorbing device itself. <P>SOLUTION: A first moving element fixed to the other ends of the first and second inner cables are engagingly locked relative to a carrier plate so as to be movable in the axial direction of the first and second inner cables, and the contact surfaces of the first moving element and a second moving element which arrests the pulling movement of the first and second inner cables to the carrier plate are inclined so that the second moving element is movable substantially vertically to the axial direction of the first and second inner cables. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a slack absorbing device for an inner cable for driving a window regulator (hereinafter simply referred to as “slack absorbing device”).

  Conventionally, as shown in FIG. 1, a window regulator WR for opening and closing a window glass of a vehicle is provided along a guide rail 1 provided so as to extend in the ascending / descending direction of the window glass G of the door D, and along the guide rail 1. The carrier plate 2 is supported so as to be movable in the longitudinal direction of the guide rail 1 and to which the glass G is fixed. In addition, one end of each of the two inner cables 3a and 3b is wound around a drum DR that is rotationally driven in both the clockwise and counterclockwise directions by the electric motor M or manual operation. The other ends of the inner cables 3a and 3b pass through the outer casings OC1 and OC2 in which one end is fixed to the housing H that accommodates the drum DR and the other end is fixed to the upper end or the lower end of the guide rail 1, respectively. The rail 1 is connected to the carrier plate 2 via the upper end or the lower end. When the electric motor M rotates to the upward side of the carrier plate 2, the inner cable 3 a connected to the carrier plate 2 through the upper end of the guide rail 1 is wound around the drum DR and also through the lower end of the guide rail 1. The inner cable 3b connected to the carrier plate 2 is fed out from the drum DR. As a result, the carrier plate 2 moves up along the guide rail 1 and the window glass G rises. On the contrary, when the motor M rotates to the lower side of the carrier plate 2, the inner cable 3a is wound around the drum DR and the inner cable 3a is fed out from the drum DR. As a result, the carrier plate 2 moves down along the guide rail 1 and the window glass G descends.

  When the drum DR or the like is worn due to contact with the inner cables 3a and 3b, the inner cables 3a and 3b become shorter than the inner cables 3a and 3b, so that the inner cables 3a and 3b are loosened. appear. As a result, when the drum DR is rotated counterclockwise or clockwise in order to lower or raise the window glass G, the carrier plate 100 is lowered or raised until the inner cable 3a or the inner cable 3b is not loosened. For this reason, a state occurs in which the raising / lowering operation of the carrier plate 2 is delayed with respect to the rotation operation of the drum DR.

  Therefore, for example, even if the driver performs a switch operation to slightly lower the window glass G located at the upper end, the window glass G does not descend simultaneously with the switch operation, and the inner cables 3a and 3b are slack. When the window glass G positioned at the lower end is switched to the ascending side, the window glass G does not rise simultaneously with the switching operation, and the inner cables 3a and 3b are slackened. Since it rises with a delay corresponding to the amount, the desired amount of adjustment cannot be obtained even if the position of the window glass G is finely adjusted for opening or closing.

  In the window regulator described in Patent Document 1, the other ends of the two inner cables are locked to a metallic case provided on the carrier plate, and the two inner cables are connected to the inside of the case. A tension is applied by the extension of the spring provided in the arm to absorb the slack.

  However, in the window regulator described in Patent Document 1, even when the slack of the inner cable is absorbed, the spring on the side wound around the drum is compressed and deformed when the drum rotates, so that the inner cable is wound around the drum to some extent. Until it is done, the carrier plate does not move. Therefore, even in the window regulator of Patent Document 1, it is not possible to easily adjust the glass position to a desired position when finely adjusting the position of the glass, as in the case where the inner cable wound on the drum is slack. There is a problem.

  Therefore, in the window regulator described in Patent Document 2, in order to solve such a problem, the guide rail for guiding the glass in the opening and closing direction, the guide rail movably guided in the opening and closing direction, and the glass A carrier plate to which the glass is fixed, an electric motor for reciprocating the glass in the opening and closing direction, a drum fixed in a predetermined positional relationship with respect to the guide rail and driven to rotate by the electric motor; A first inner cable in which the other end is wound around the drum with one end fixed in accordance with the rotation of the drum in one rotation direction, and the other end is connected to the carrier plate; The other end side is wound around the drum while the other end side is fixed in accordance with the rotation of the other rotation direction. Is provided on the guide rail, and the other end side of the first inner cable is wound on the drum side so that the carrier plate is moved in one of the opening and closing directions. A first guide roller that guides the first inner cable to the carrier plate and the guide rail so that the first inner cable is moved in the direction, and the other end side of the second inner cable is wound around the drum side. And a second guide roller that guides the second inner cable to the carrier plate so that the carrier plate moves in the other direction of the opening and closing direction. Connect the other end of the first inner cable or the second inner cable to the first and second inner cables. A spring member that holds the second inner cable in a slack-free state and takes in the extension of the first and second inner cables by applying tension to the first and second inner cables; A ratchet mechanism is provided that is actuated by the displacement of the spring member that has taken in, and that fixes and holds the other ends of the first and second inner cables that have taken in the extension at a new position. A compression coil spring having an outer end fixed to the moving member in a state where the inner cable or the second inner cable is inserted, and the ratchet mechanism is fixed to the carrier plate and extends in the opening and closing direction. A stationary ratchet member having a stationary claw row extending; and the carrier plate to move in the opening and closing direction. A movable claw portion held by the fixed claw row and connected to the other end of the first inner cable or the second inner cable inserted through the compression coil spring, and the compression coil The movable side ratchet member with which the inner end is contact | abutted in the state which the spring was compressed is comprised.

Japanese Patent Laid-Open No. 9-25765 Japanese Patent No. 4018321

  However, in the window regulator disclosed in Patent Document 2, the first inner cable and / or the second inner cable is slackened, and the movable claw is bent when the movable claw gets over the fixed claw. Therefore, when the inner cable is slack, it is impossible to absorb the slack immediately. Further, since the inner cable is inserted through the spring member, there is a problem that the carrier plate must be formed large in the axial direction of the inner cable.

  The present invention solves such a conventional problem, and when a slack occurs in the first inner cable and / or the second inner cable, the slack can be immediately absorbed, and the slack absorbing device itself can be made compact. An object of the present invention is to provide a slack absorbing device for an inner cable for driving a window regulator.

  An inner cable slack absorbing device for driving a window regulator according to the present invention includes a guide rail attached to a vehicle door and extending in a vertical direction, and a window glass guided by the guide rail so as not to be separable and slidable. A fixed carrier plate, an electric motor for moving the carrier plate along the guide rail, a drum to which rotational torque generated by the electric motor is transmitted directly or via torque transmission means, The first and / or second inner cable, one end of which is wound around the drum and the other end connected to the carrier plate, and the end direction of the guide rail. And a wiring direction changing means for changing the first inner cable. The second inner cable is connected to the carrier plate so as to be movable in the pushing direction of the first inner cable and immovable in the pulling direction, and the second inner cable is movable to the carrier plate in the pushing direction of the second inner cable and pulled. A slack absorbing device for a control cable for driving a window regulator that is immovably connected in a direction, wherein the first movable element fixed to the other end of the first and second inner cables is connected to the carrier plate. A second mover, which is locked so as to be movable in the axial direction of the first and second inner cables and prevents the first and second inner cables from moving in the pulling direction with respect to the carrier plate, is provided on the carrier plate, In order to be able to move in a direction substantially perpendicular to the axial direction of the first and second inner cables, The contact surface of the first movable element and the second movable element is inclined, and teeth are arranged on the contact surface of the first movable element and the second movable element so that the second movable element can move irreversibly. It is characterized by being formed.

  That is, in the present invention, the first movable element fixed to the other ends of the first and second inner cables is locked to the carrier plate so as to be movable in the axial direction of the first and second inner cables. And the second mover for preventing the first and second inner cables from pulling with respect to the carrier plate can move to the carrier plate in a direction substantially perpendicular to the axial direction of the first and second inner cables. The requirement is that the contact surfaces of the first moving element and the second moving element are inclined.

  According to the present invention, when the first inner cable and / or the second inner cable is slackened, the first moving element can move in the axial direction of the inner cable, and the second moving element The slack absorbing device itself is compact without taking up a large space in the axial direction of the inner cable in order to move the first movable element in a direction to absorb the slack of the inner cable while moving in a substantially vertical direction with respect to the first mover. Can be configured.

  Next, the slack absorbing device of the present embodiment will be described in detail below with reference to the accompanying drawings. FIG. 1 is a schematic explanatory view of a window regulator to which the slack absorbing device of the present invention is applied, FIG. 2 is an enlarged explanatory view of a carrier plate to which the slack absorbing device of the present invention is applied, and FIG. FIG. 3B is a plan view of a housing provided in the slack absorbing device, FIG. 3B is a cross-sectional view of the housing of FIG. 2A taken along line XX, and FIG. 4A is a slack of FIG. It is a perspective view which shows the 1st moving element provided in an absorber, (b) of FIG. 4 is plane | planar explanatory drawing of the 1st moving element of (a) of FIG. 4, (a) of FIG. 5 is slack of FIG. It is a perspective view which shows the 2nd moving element provided in an absorber, (b) of FIG. 5 is plane explanatory drawing of the 2nd moving element of (a) of FIG. 5, FIG. 6 is applied to the carrier plate of FIG. It is operation | movement explanatory drawing of a slack absorber.

  As shown in FIG. 1, the window regulator WR provided with the slack absorbing device 20 of the present embodiment includes a guide rail 1 fixed in the vehicle door D and extending in the moving direction of the window glass G, and a guide rail 1 on the guide rail 1. A carrier plate 2 that slides and has a vehicle window glass G fixed thereto and is provided with the slack absorbing device 20, an electric motor M that slides the carrier plate 2 up and down along the guide rail 1, and an electric motor Rotational torque generated by M is transmitted directly or via conventionally known rotational torque transmission means such as a reduction gear mechanism, and accommodates a drum DR that winds first and second inner cables described later, and the drum DR. A conventional housing H, a guide plate, a guide groove, a pulley, etc., which are fixed to the drum DR and fixed to the upper end of the guide rail 1. The first wiring direction changing means 10 is connected to the first inner cable 3a whose other end is connected to the carrier plate 2, and one end is fixed to the housing H, and the other end is changed to the first wiring direction. A first outer casing OC1 through which the first inner cable 3a fixed in the vicinity of the means 10 is inserted, and one end of which is wound around the drum DR in a direction opposite to the first inner cable 3a, and a lower end of the guide rail 1 A second inner cable 3b whose other end is connected to the carrier plate through a second routing direction changing means 9 conventionally known such as a guide plate, a guide groove, and a pulley fixed to the carrier plate, and one end to the housing H Is fixed, and the other end is fixed to the second routing direction changing means 9, and the second outer casing OC2 through which the second inner cable 3b is inserted; Ranaru.

  The details of the slack absorbing device 20 will be described below with reference to FIGS.

  As shown in FIG. 2, the slack absorbing device 20 is accommodated in a recess 2a formed in the carrier plate 2 by a conventionally known fixing means such as welding, heat welding, or screwing according to the material of the part to be joined. It is fixed. The slack absorbing device 20 is engaged with the first movable elements 12a and 12b fixed to the ends of the casing 11, the first inner cable 3a and the second inner cable 3b, respectively, and the first movable elements 12a and 12b. 2 moving elements 13a and 13b and compression coil springs 14a and 14b for urging the second moving elements 13a and 13b, respectively. Further, a lid that covers the housing 11 may be further provided.

  As shown in FIGS. 3a and 3b, the housing 11 has slits 11a and 11a for introducing the first inner cable 3a and the second inner cable 3b, and part of the tips of the second movers 13a and 13b. Holes 11b and 11b for receiving, a mover accommodating portion 11c that allows the first movers 12a and 12b to move in the vertical direction, a left wall surface 11d that slides on the first movers 12a and 12b, and a second Accompanying the urging by the compression coil springs 14a, 14b of the two movers 13a, 13b and the bottom surfaces 11e, 11e sliding with the movers 13a, 13b, the right wall surfaces 11f, 11f contacting the compression coil springs 14a, 14b. A spring accommodating portion 11h that accommodates the compression coil springs 14a and 14b and is partitioned or defined by a partition portion 11g that guides the movement. And 11h, consists rear 11i, first inner cable 3a and the second inner cable 3b extends in the moving element accommodating portion 11c of the housing 11 through the slit 11a. Note that the housing 11 may be formed integrally with the carrier plate 2.

  Next, the first movable elements 12a and 12b and the second movable elements 13a and 13b will be described with reference to FIGS. 4 and 5. The first movable elements 12a and 12b and the second movable elements 13a and 13b have the same shape. Therefore, the description of the first moving element 12b and the second moving element 13b is omitted.

  As shown in FIG. 4, the first moving element 12a is formed at the end of the first inner cable 3a by zinc die casting or the like. The first moving element 12a has a substantially quadrangular prism shape in cross section, a side sliding surface T1 that slides with the left wall surface 11d of the housing 11, and a back sliding surface T2 that slides with the back surface 11i of the housing 11. And a plurality of teeth T4 formed on an inclined surface T3 inclined by an angle θ1 with respect to the vertical direction (HL in FIG. 4) of the first inner cable 3a. The plurality of teeth T4 are formed by alternately forming a tooth surface T5 and a tooth surface T6. The tooth surface T5 forms an acute angle θ2 (preferably 30 to 50 degrees) with respect to HL, and the tooth surface T6 has θ2 Is larger than the angle θ3 (preferably 80 to 100 degrees).

  As shown in FIG. 5, the second movers 13 a and 13 b are molded from a synthetic resin such as polyacetal resin, have a substantially triangular prism shape, and have a bottom sliding surface T7 that slides with the bottom surface 11 e of the housing 11, In the vertical direction (HL in FIG. 5) in the axial direction of the first inner cable 3a, a back sliding surface T8 that slides with the back surface 11i of the housing 11, a contact surface T9 that contacts a compression coil spring 14a, which will be described later. It consists of a plurality of teeth T11 formed on an inclined surface T10 inclined by an angle θ4, and a notch K1 for inserting the first inner cable 3a is formed on the inclined surface T10. The plurality of teeth T11 are configured by alternately forming a tooth surface T12 and a tooth surface T13, the tooth surface T12 forms an acute angle θ5 (preferably 30 to 50 degrees) with respect to HL, and the tooth surface T13 has θ5. Is larger than the angle θ6 (preferably 80 to 100 degrees). It is preferable that θ1 and θ4, θ2 and θ5, and θ3 and θ6 have the same angle.

  The compression coil springs 14a and 14b are conventionally known and will not be described in detail.

  Next, the operation of the slack absorbing device 20 when slack occurs in the first inner cable 3a will be described, but the same effect is also obtained when slack occurs in the second inner cable 3b.

  6a shows a state in which the first inner cable 3a, the second inner cable 3b, the first movers 12a and 12b, the second movers 13a and 13b, and the compression coil springs 14a and 14b are assembled to the casing 11. Since no slack is generated in the inner cable 3a, the first moving element 12a cannot move downward. The plurality of teeth T4 of the first moving element 12a and the plurality of teeth T11 of the second moving element 13a mesh with each other, and the second moving element 13b urges the first moving element 12a leftward by the compression coil spring 14a. However, since the side sliding surface T1 of the first moving element 12a is in contact with the left wall surface 11d of the housing 11, the first moving element 12a and the second moving element 13a cannot move in the left direction. Hold that position. If the biasing force F in the leftward direction in the horizontal direction is applied to the first moving element 12a by the compression coil spring 14a at this time, the biasing force F is applied to the force Fcosθ1 in the direction of the inclined surface T3 and the inclined surface T3. It can be decomposed into a vertical component force Fsin θ1. When the vertical component force Fsinθ1 is decomposed into a vertical component and a horizontal component force, a downward force in the vertical direction (Fsinθ1 · cosθ1) is always applied to the first moving element 12a.

  As shown in FIG. 6b, when slack occurs in the first inner cable 3a, the first moving element 12a can move downward. Then, the first movement is performed while the tooth surface T12 of the second movable element 13a is in contact with the tooth surface T5 of the first movable element 12a by the downward force (Fsin θ1 · cos θ1) acting on the first movable element 12a. The second movable element 13a moves to the left while pushing the child 12a downward.

  Then, as shown in FIG. 6c, the plurality of teeth T11 of the second moving element 13a and the plurality of teeth T4 of the first moving element 12a are engaged again, and the slack absorption of the first inner cable 3a is completed.

  Thereafter, when the first inner cable 3a is moved upward to raise the carrier plate 2, the tooth surface T5 of the first moving element 12a and the tooth surface T12 of the second moving element 13a come into contact with each other on an inclined surface. Therefore, the tooth surface T5 of the first moving element 12a tries to push the second moving element 13a rightward against the urging force of the compression coil spring 14a via the tooth surface T12 of the second moving element 13a. However, since the tooth surface T6 of the first moving element 12a and the tooth surface T13 of the second moving element 13a are formed substantially perpendicular to the HL (see FIGS. 4 and 5), the second moving element 13a The movement in the right direction is prevented, and the carrier plate 2 can be moved without delay with respect to the movement of the first inner cable 3a.

  Here, the inner cable slack eliminating device of the window regulator using the first outer casing OC1 and the second outer casing OC2 has been described, but the slack eliminating device of the present embodiment can also be applied to a window regulator not using the outer casing. Needless to say.

It is a schematic explanatory drawing of the window regulator to which the slack absorption apparatus of this invention is applied. It is expansion explanatory drawing of the carrier plate to which the slack absorption apparatus of this invention was applied. (A) is plane explanatory drawing of the housing | casing provided in the slack absorption apparatus of FIG. 2, (b) is XX sectional drawing of the housing | casing of (a). (A) is a perspective view which shows the 1st mover provided in the slack absorption apparatus of FIG. 2, (b) is a plane explanatory view of the 1st mover of (a). (A) is a perspective view which shows the 2nd movable element provided in the slack absorption apparatus of FIG. 2, (b) is a plane explanatory drawing of the 2nd movable element of (a). It is operation | movement explanatory drawing of the slack absorption apparatus applied to the carrier plate of FIG. It is operation | movement explanatory drawing of the slack absorption apparatus applied to the carrier plate of FIG. It is operation | movement explanatory drawing of the slack absorption apparatus applied to the carrier plate of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Guide rail 2 Carrier plate 2a Recessed part 3a 1st inner cable 3b 2nd inner cable 9 2nd routing direction change means 10 1st routing direction change means 11 Housing | casing 12a, 12b 1st moving element 13a, 13a 2nd movement Child 14a, 14b Compression coil spring 20 Slack absorber OC1 1st outer casing OC2 2nd outer casing

Claims (4)

A guide rail that is attached to a vehicle door and extends in the vertical direction; a carrier plate that is slidably guided by the guide rail and that is slidable; An electric motor for movement along the drum, a drum to which rotational torque generated by the electric motor is transmitted directly or via torque transmission means, one end is wound around the drum, and the other end is connected to the carrier plate. First and second inner cables and routing direction changing means for changing the routing direction of the first and / or second inner cables attached to the end of the guide rail, 1 inner cable can be moved to the carrier plate in the pushing direction of the first inner cable and pulled A slack absorbing device for a control cable for driving a window regulator, wherein the second inner cable is connected to the carrier plate so as to be movable in the pushing direction of the second inner cable and immovable in the pulling direction. The first moving element fixed to the other end of the first and second inner cables is locked to the carrier plate so as to be movable in the axial direction of the first and second inner cables, A second moving element that prevents the first and second inner cables from moving in the pulling direction with respect to the carrier plate moves to the carrier plate in a direction substantially perpendicular to the axial direction of the first and second inner cables. The contact surface of the first movable element and the second movable element is inclined so that the first movable element and the second movable element are moved. Those in contact surface, the second moving element is slack absorbing apparatus of the inner cable for window regulator drive, characterized in that teeth are formed so as to move irreversibly. 2. The slack absorption of the inner cable for driving a window regulator according to claim 1, wherein the teeth are formed with an acute tooth surface and an obtuse tooth surface with respect to a direction perpendicular to the axial direction of the first and second inner cables. apparatus. The slack absorbing device for an inner cable for driving a window regulator according to claim 1 or 2, wherein the teeth of the first moving element and the second moving element have the same shape. The window regulator provided with the slack absorption apparatus of the inner cable for a window regulator drive of Claims 1-3.

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