JP3756420B2 - Forward / reverse winding drive unit of wire type window regulator - Google Patents

Description

[0001]
【Technical field】
The present invention relates to a forward / reverse winding drive unit used in a wire type window regulator.
[0002]
[Prior art and its problems]
Various types of wire-type window regulators are known, but by winding a drive wire that is directly or indirectly coupled to a window glass around a winding drum and rotating the winding drum forward and backward, This is common in that the drive wire is taken up from the take-up drum on the one hand and drawn out on the other to raise and lower the window glass.
[0003]
The forward / reverse take-up drive unit having the take-up drum generally has a drum cover that rotatably houses the take-up drum, a drive shaft that rotates the take-up drum, and a drive shaft that is coaxial with the take-up drum. And a supporting base plate. The drum cover and the base plate are coupled in a state where the winding drum is housed in the drum cover, the drive shaft is rotatably supported on the base plate, and the contact flanges are in contact with each other. Conventionally, this coupling is performed by providing a cut-and-raised piece on the base plate side, and crimping (bending) the cut-and-raised piece on the abutting flange of the drum cover in a state where both abutting flanges are abutted. It was.
[0004]
OBJECT OF THE INVENTION
SUMMARY OF THE INVENTION An object of the present invention is to provide a forward / reverse winding device drive unit for a wire-type window regulator that can couple a drum cover and a base plate without forming cut-raised pieces on the base plate and caulking work thereof. . In other words, according to the present invention, in the forward / reverse winding drive unit unit of the wire type wind regulator in which the window glass is moved up and down by the driving wire, the drum cover for storing the winding drum of the driving wire and the base plate are easily temporarily coupled. The aim is to obtain a unit that can.
[0005]
SUMMARY OF THE INVENTION
In the present invention, the abutting flanges of the drum cover and the base plate are each provided with insertion holes for fixing bolts. The fixing bolt insertion locking holes are provided with a forward / reverse winding device drive unit in the vehicle door. Focusing on the fact that the fixing bolt is inserted when fixing, the invention was completed based on the viewpoint that if the drum cover and the base plate are temporarily connected using the fixing bolt, the caulking work is not necessary.
[0006]
The present invention relates to a winding drum that winds up a drive wire for raising and lowering a window glass; a drum cover that rotatably houses the winding drum; and a drive shaft that is coaxial with the winding drum and that drives the winding drum to rotate. A metal base plate which rotatably supports the drive shaft and is coupled to the drum cover; abutting flanges which are respectively provided on the drum cover and the base plate; and formed on the abutting flanges of the drum cover and the base plate, respectively. In the forward / reverse winding device drive unit of the wire type wind regulator having a bolt insertion hole and a bolt insertion locking hole, the base plate has a pair of slits whose inner ends communicate with the bolt insertion locking hole. At least one elastic locking piece formed on the drum cover. Engages the belt insertion hole on the threaded surface of the fixing bolts inserted into the bolt insertion locking hole, it is characterized in that stop missing the fixing bolt in a rotatable state.
[0007]
It is desirable to further form positioning protrusions and holes for the drum cover and the contact flange of the base plate.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The wire-type window regulator shown in FIG. 1 is a wire-type window regulator that eliminates the need for slide rails as window glass raising and lowering guides, and is located at the front and rear of the upper position in the vehicle door and at the front and rear of the lower position, respectively. A wire guide member is provided, and a drive wire is wound so that a vertical portion is formed between the upper and lower wire guide members, and the drive wire is fixed to the window glass side in the vertical portion. We have developed a wire-type window regulator that raises and lowers the window glass by winding the drive wire on the one hand with a forward / reverse take-up drive device. The front and rear positions of the window glass are guided by a guide member such as a door sash, for example.
In the following description, the left side of FIG. 1 is “front” and the right side is “rear”.
[0009]
Inside the vehicle door 1, a pair of front and rear glass guides (not shown) is provided by a door sash or the like. Both front and rear edge portions of the window glass 2 engage with the front and rear glass guides, and can move up and down with respect to the vehicle door 1 along the glass guides.
[0010]
Brackets 3, 4 facing in the front-rear direction are fixed at two locations inside the vehicle door 1.
Circular pulleys (wire guide members) 5 and 6 are pivotally attached to both front and rear ends of the upper bracket 3 by bolts 5a and 6a and nuts.
[0011]
A circular pulley (wire guide member) 7 is pivotally attached to the front end portion of the lower bracket 4 by bolts 7a and nuts similarly to the pulleys 5 and 6. The pulleys 5, 6, and 7 are formed of a synthetic resin material having the same specifications.
[0012]
A non-rotating wire guide member 8 having a semicircular shape at the rear end portion of the lower bracket 4 and having a groove (not shown) formed in the peripheral portion excluding its upper surface is fixed to be non-rotatable by a bolt 8a or the like. Has been. The brackets 3 and 4 are fastened and fixed to the inner panel of the vehicle door by bolts 5a, 6a, 7a and 8a and nuts.
[0013]
A forward / reverse winding drive unit 10 that is a subject of the present embodiment is fixed inside the vehicle door 1. An endless drive wire W that reaches the pulleys 5, 6, 7 and the non-rotating wire guide member 8 is wound around the winding drum 11 that is rotatably supported inside the forward / reverse winding drive unit 10. Has been. Regardless of the direction of rotation of the take-up drum 11, the drive wire W has a vertical portion W 0 between the front upper and lower pulleys 5 and 7 and a vertical portion between the rear pulley 6 and the non-rotating wire guide member 8. The direction portion W0 is wound (wired) so as to always move in the same direction. A pair of front and rear wire fixing members 9, 9 are fixed to the front and rear vertical portions of the drive wire W at the same height, respectively (see FIG. 1). The front and rear wire fixing members 9 and 9 are directly fixed to the lower end portion of the window glass 2.
[0014]
For example, the wire-type window regulator having the above-described configuration rotates the winding drum 11 of the forward / reverse winding drive unit 10 in the feeding direction and the winding direction, so that the window glass 2 is moved to the window opening 1a of the vehicle door 1. Can be moved up and down between an upper limit position for fully closing and a lower limit position for fully opening the window opening 1a.
[0015]
The present embodiment is characterized by the configuration of the forward / reverse winding drive unit 10 used for the wire type window regulator as described above, for example. 2 to 8 show an embodiment of the present invention, which includes a drum case 12 that houses a winding drum 11 and a spring case (base plate) 13 that forms a pair with the drum case 12. The drum case 12 and the spring case 13 are integrally formed with contact flanges 12a and 13a that face each other.
[0016]
A rotation center hole 12b that rotatably receives a rotation center boss 11a protruding from one end of the winding drum 11 is formed at the bottom of the drum case 12 having a bottomed cylindrical shape as a whole. Has a wire access opening 12c in a direction parallel to the axis. The drive wire wound around the spiral groove 11b on the peripheral surface of the take-up drum 11 enters and exits the drum case 12 through the wire access opening 12c. The contact flange 12a is formed with three fixing bolt insertion holes 12d at equal angular intervals, and two positioning bosses (protrusions) 12f project between the adjacent fixing bolt insertion holes 12d. It is installed. The drum case 12 described above is formed of a molded product of a synthetic resin material.
[0017]
The spring case 13 has a bottomed cylindrical shape that is concentric with the cylindrical portion of the drum case 12, and a support hole 13b that rotatably supports the drive shaft 14 is formed in the bottom portion. The cylindrical portion forms a spring contact cylindrical surface 13c. The contact flange 13a is formed with three bolt insertion locking holes 13d corresponding to the fixing bolt insertion holes 12d of the drum case 12, and two positioning holes 13f corresponding to the positioning bosses 12f.
[0018]
The bolt insertion locking holes 13d are provided with elastic locking pieces 13g at two opposing positions in the radial direction. This elastic locking piece 13g is formed by a pair of slits 13h (FIGS. 6 and 8), and when the fixing bolt 15 is inserted into the bolt insertion locking hole 13d, the inner end portion of the fixing bolt 15 is It engages with the thread surface 15a and acts to prevent the fixing bolt 15 from coming off in a rotatable state.
[0019]
In the drum case 12 and the spring case 13, when the drive shaft 14 coaxial with the winding drum 11 is rotated in the forward and reverse directions, the winding drum 11 is rotated forward and backward together, and conversely, on the winding drum 11 side. When a rotational force is applied, a selective brake mechanism for preventing the winding drum 11 from rotating is incorporated. This selective brake mechanism itself is well known and is not directly related to the gist of the present invention. A torsion coil spring 16 that is in close contact with the inner surface of the spring contact cylindrical surface 13 c in a free state is inserted into the spring contact cylindrical surface 13 c of the spring case 13. A hook 16a facing inward is formed. The drive shaft 14 is formed with a pair of radial surfaces 14a that engage with the pair of hooks 16a and a recess 14b that is positioned between the pair of radial surfaces 14a. A claw portion 17a of a stopper member 17 is inserted into the concave portion 14b of the drive shaft 14, and the stopper member 17 can rotate relative to the drive shaft 14 by a clearance between the claw portion 17a and the concave portion 14b. The stopper member 17 is fitted into a non-circular shaft hole (square in the figure) so as to rotate integrally with the winding drum 11 at all times.
[0020]
In this selective brake mechanism, when the drive shaft 14 is rotated forward and backward, the radial surface 14a is engaged with the hook 16a and the diameter of the torsion coil spring 16 is reduced. For this reason, the rotation of the drive shaft 14 can be transmitted from the radial surface 14a and the claw portion 17a to the take-up drum 11, and the drive wire can be taken up on one side and fed out on the other side. On the other hand, when a rotational force is applied to the winding drum 11 side, the claw portion 17a pushes the hook 16a to enlarge the diameter of the torsion coil spring 16. For this reason, the frictional force between the torsion coil spring 16 and the spring contact cylindrical surface 13c is increased, and the rotation of the winding drum 11 is prevented.
[0021]
The drum case 12 and the spring case 13 (forward / reverse hoisting drive unit) incorporating the above-described selective brake mechanism are temporarily coupled as follows. The drum case 12 and the spring case 13 in which the winding drum 11, the stopper member 17, the drive shaft 14 and the torsion coil spring 16 are housed and the drive shaft 14 protrudes from the support hole 13 b are firstly contacted with the contact flange 12 a. And 13a. At this time, the positioning boss 12f is fitted into the positioning hole 13f, and the axes of the drum case 12 and the spring case 13 are aligned (center of FIG. 7). When the positioning boss 12f is thus fitted into the positioning hole 13f, the drive shaft 14 is prevented from falling with respect to the drum case 12 (winding drum 11).
[0022]
In this state, when the fixing bolt 15 is inserted from the fixing bolt insertion hole 12d into the bolt insertion locking hole 13d, the fixing bolt 15 passes through the fixing bolt insertion hole 12d without any resistance and reaches the bolt insertion locking hole 13d. The peripheral surface of the tip portion engages (contacts) with the elastic locking piece 13g. When the fixing bolt 15 is further pushed in while elastically deforming the elastic locking piece 13g, the tip of the elastic locking piece 13g engages with the thread surface 15a of the fixing bolt 15, and the fixing bolt 15 is prevented from coming off. In order to ensure the retaining, it is preferable to incline the elastic locking piece 13g so that its distal end is positioned forward in the insertion direction of the fixing bolt 15 in a free state. Therefore, when the fixing bolt 15 is fully pushed, the drum case 12 and the spring case 13 are temporarily joined in this state (right side in FIG. 7). There is no need to cut and raise the spring case 13 as in the prior art.
[0023]
The wire-type window regulator of the illustrated embodiment is a non-rotating combination with the above-described temporary combination (forward / reverse winding drive unit 10) of the drum case 12 and the spring case 13, the upper bracket 3 having pulleys 5 and 6, and the pulley 7. Drive wires are routed to the lower bracket 4 having the wire guide member 8 and assembled in advance, and these are fixed at appropriate positions in the vehicle door. At this time, the fixing bolt 15 that temporarily connects the drum case 12 and the spring case 13 can be screwed to the fixing nut 21 (FIG. 4) of the bracket 20 in the vehicle door as it is.
[0024]
In the above description, the forward / reverse winding drive unit according to the present invention is applied to the wire type window regulator shown in FIG. 1, but the present invention can be applied without questioning the overall structure of the wire type window regulator. . That is, for example, the present invention can be applied to a regulator or the like in which a guide rail is fixed in a vertical direction inside a vehicle door and a wire guide member is supported above and below the guide rail.
[0025]
In the illustrated embodiment, the present invention is applied to the forward / reverse winding drive unit 10 that manually rotates the drive shaft 14. However, the present invention can also be applied to an electric type. In this electric type, the spring case 13 can be a simple base plate.
[0026]
【The invention's effect】
According to the present invention, in the forward / reverse winding drive unit of the wire type window regulator that moves the window glass up and down by the drive wire, the drum cover for storing the winding drum of the drive wire and the base plate can be easily temporarily combined. it can.
[Brief description of the drawings]
FIG. 1 is a side view showing the overall structure of an embodiment of a wire-type window regulator having a forward / reverse winding drive unit according to the present invention.
FIG. 2 is a front view of a forward / reverse winding drive unit according to the present invention.
FIG. 3 is a side view of FIG. 2;
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a cross-sectional view taken along line VV in FIG.
6 is an exploded perspective view of the forward / reverse winding drive unit of FIGS. 2 to 5. FIG.
FIG. 7 is a cross-sectional view showing a procedure for joining the drum cover and the base plate of the same forward / reverse winding drive unit;
FIG. 8 is an enlarged perspective view of the drum cover and the base plate in an exploded state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vehicle door 1a Window opening 2 Window glass 3 Bracket 4 Bracket 5 6 7 Pulley (wire guide member)
8 Non-rotating wire guide member 9 Wire fixing member 10 Forward / reverse winding drive unit 11 Winding drum 11a Rotating center boss 11b Spiral groove 12 Drum case 12a 13a Contact flange 12b Rotating center hole 12c Wire entrance / exit opening 12d Fixing bolt insertion hole 12f Positioning boss (projection)
13 Spring case (base plate)
13b Support hole 13c Spring contact cylindrical surface 13d Bolt insertion locking hole 13f Positioning hole 13g Elastic locking piece 13h Slit 14 Drive shaft 14a Radial surface 14b Recess 15 Fixing bolt 15a Fixing bolt thread surface 16 Torsion coil spring 16a Hook 17 Stopper member 17a Claw portion 20 Vehicle door bracket 21 Fixing nut W Driving wire W0 Vertical portion

Claims (2)

A winding drum for winding a drive wire for raising and lowering the window glass;
A drum cover for storing the winding drum in a rotatable manner;
A drive shaft coaxial with the take-up drum for rotationally driving the take-up drum;
A metal base plate that rotatably supports the drive shaft and is coupled to the drum cover;
Abutting flanges respectively abutting on the drum cover and the base plate;
Bolt insertion holes and bolt insertion locking holes respectively formed in the contact flanges of the drum cover and the base plate;
With
The base plate has at least one elastic locking piece formed by a pair of slits whose inner end communicates with the bolt insertion locking hole, and the elastic locking piece is inserted into the bolt cover of the drum cover. A forward / reverse winding drive unit unit for a wire-type window regulator, wherein the fixing bolt is engaged with a thread surface of a fixing bolt inserted into the bolt insertion locking hole from a hole, and the fixing bolt is retained in a rotatable state. 2. A forward / reverse winding drive unit for a wire type wind regulator according to claim 1, wherein the contact flange of the drum cover and the base plate is formed with a protrusion and a hole for positioning both of them. unit.

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