JP2006028973A - Cable type window regulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a window regulator for easily installing a drum housing and a guide rail, by stably supporting a motor and a speed reducer, while sufficiently protecting a drum. <P>SOLUTION: This window regulator 10 has the guide rail 11, a carrier plate slidingly arranged on its guide rail 11 and supporting window glass, a cable driving part 14 installed on the lower end of the guide rail, a pulley installed on the upper end, and a cable 16 stretched in a loop shape between its pulley and the cable driving part 14 and having its part engaged with the carrier plate; and forms clearance 58 and an insertion hole 64 for inserting the lower end of the guide rail 11 into the upper end of the drum housing 25 of the cable driving part 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cable type window regulator that drives a window glass of an automobile door up and down.

Japanese Patent No. 3332803 JP-A-9-72156

  In Patent Document 1, as shown in FIGS. 11a and 11b, a guide rail 101 provided in a door of an automobile, a carrier plate 102 which is slidably provided on the guide rail and supports a window glass, A cable drive unit 103 attached to the lower end of the guide rail, a pulley 104 for changing the direction of the cable attached to the other end, and a loop between the pulley and the cable drive unit 103, and a part thereof A window regulator 100 with a cable 105 engaged with a carrier plate 102 is disclosed.

  As shown in FIG. 12, the guide rail 101 is provided with rising walls 101a and 101b on both side edges, and the carrier plate 102 is made of a synthetic resin provided with grooves that slide along the rising walls 101a and 101b. The slide shoe is integrally provided by insert molding. The cable driving unit 103 includes a bracket 106 formed by press-molding a metal plate, a drum rotatably held in a semicircular recess 107 formed in the bracket, and a motor (which is attached to the bracket 106 and rotationally drives the drum). M) of FIG. 11a. The bracket 106 is attached to the lower end of the guide rail 101 by caulking, and the guide rail 101 is attached to the inner panel of the automobile door, and also serves as a drum cover.

  On the other hand, in Patent Document 2, an endless perforated belt 110 is used as a power transmission means instead of a cable as shown in FIGS. 13a and 13b, and the lower end of the guide rail 101 is engaged with the perforated belt 110 and driven. A window regulator 112 provided with a driving device 111 is described. The drive device 111 drives a bracket 113 that supports the lower portion of the guide rail, a motor M that is attached to the bracket, a reduction shaft G that is mounted on a drive shaft of the motor 114, and accommodated in the housing 114, and the perforated belt 110. Sprocket 116. A carrier plate 102 is attached to the perforated belt 110.

  In the window regulator in which the driving device as described above is attached to the lower end of the guide rail, the motor M is attached to the brackets 106 and 113 that support the lower portion of the guide rail. As described in Patent Document 1, these brackets are formed by press-molding a metal plate and cannot sufficiently protect the drum. That is, in Patent Document 1, a semicircular recess 107 is formed in the bracket 106 to cover a part of the drum, but this is not sufficient. The same applies to the bracket 113 of Patent Document 2. Furthermore, in any case, the assembly of the bracket to the guide rail is complicated.

  An object of the present invention is to provide a window regulator that can sufficiently protect a drum and that is easy to assemble. Furthermore, a second technical object of the present invention is to provide a window regulator that can be easily assembled to a guide rail of a cable drive unit.

  The cable-type window regulator of the present invention includes a guide rail, a carrier plate that is slidably provided on the guide rail, supports a window glass, a cable drive unit that is attached to one end of the guide rail, and a second end. A window having a direction changing member of a cable to be attached, and a cable that is stretched between the direction changing member and the cable driving portion in a loop shape with a predetermined tension, and a part of which is engaged with the carrier plate. A regulator, wherein the guide rail is formed by bending a metal plate into a predetermined cross-sectional shape having a flat portion and a rising portion, and the cable driving portion is at least a part of the flat portion at one end of the guide rail. And a synthetic resin drum housing having a fitting groove for fitting to the rising portion, and the drum housing A drum that is rotatably provided, winds up an end of the cable, feeds the other end and circulates the drum, and a motor that is attached to the drum housing and drives the drum to reciprocate. Yes.

  In such a window regulator, it is preferable that the drum housing also serves as a bracket for supporting the lower portion of the guide rail. Furthermore, it is preferable that the rising portion of the guide rail is a double bent portion that rises from the vicinity of one side edge of the flat portion. Further, the rising portion of the guide rail rises from the vicinity of one side edge of the flat portion, and the end portion of the guide rail that is fitted to the drum housing has a vicinity of the rising portion and the other side edge side of the flat portion. It is preferable that a notch portion to be divided is formed and the vicinity of the rising portion extends longer than the other side edge side.

  In any of the window regulators described above, either one of the drum housing and the end of the guide rail fitted to the drum housing is provided with a tongue that elastically deforms, and the other is engaged with the tongue. What is provided with the engaging part to match is preferable.

  In the window regulator of the present invention, since the drum is accommodated in the drum housing, the periphery of the drum around which the cable is wound is protected from the outside. The operation of attaching the end portion of the guide rail to the housing is simple because it is only necessary to fit the end portion of the guide rail including the flat portion and the rising portion into the fitting groove of the drum housing. That is, since the cable is stretched in a loop shape with a predetermined tension, the drum housing is urged in a direction to enter the fitting groove. For this reason, there is little risk of falling off, and it is sufficient to fit them. In that case, it is preferable to use a tight fitting (stop fit). Moreover, since at least a part of the rising portion and the flat portion are fitted, rigidity against torsion can be expected.

  When the drum housing also serves as a bracket for supporting the lower portion of the guide rail, the number of parts is reduced and the assembly is further facilitated. Further, when the rising portion of the guide rail is a double bent portion that rises from the vicinity of one side edge of the flat portion, the rigidity of the fitting portion between the guide rail and the drum housing is further increased.

  The rising portion of the guide rail rises from the vicinity of one side edge of the flat portion, and the end portion of the guide rail that is fitted to the drum housing has a vicinity of the rising portion and the other side edge side of the flat portion. In the case of a window regulator in which a notch to be divided is formed and the vicinity of the rising part extends longer than the other side edge side, the part divided into left and right at the notch at the end of the guide rail Are respectively fitted in the fitting grooves of the drum housing. Therefore, the strength of each fitting can be set separately, and it becomes easier to fit.

  One of the drum housing and the end of the guide rail fitted to the drum housing is provided with a tongue piece that is elastically deformed, and the other is provided with an engaging portion that engages with the tongue piece. In this case, since the drum housing is not easily detached from the guide rail even before the cable is stretched, the assembly is further facilitated.

  Next, an embodiment of the window regulator of the present invention will be described with reference to the drawings. 1 is a perspective view of a main part showing a lower part in one embodiment of the window regulator of the present invention, FIG. 2 is a rear view showing a state in which the window regulator is attached to an automobile, FIG. 3 is a perspective view of the window regulator, FIG. FIG. 5 is a perspective view of a principal part showing an embodiment of the upper end guide part and the carrier plate of the window regulator, FIG. 6a is a perspective view of a principal part before assembling showing another embodiment of the carrier plate, and FIG. FIG. 7a is a perspective view of the main part of the carrier plate as viewed from the other direction, FIG. 7b is a cross-sectional view of the main part after the carrier plate is assembled, and FIG. 8 is the drum of FIG. 9 is a front view showing the lower end of the housing and the guide rail, FIG. 9 is a plan view showing the drum housing together with the guide rail, and FIG. 10a is a sectional view taken along line XX in FIG. FIG. 10B is an enlarged cross-sectional view of the main part of FIG. 10A.

  First, the entire window regulator will be described with reference to FIGS. A window regulator 10 shown in FIGS. 2 and 3 is provided with a guide rail 11, a carrier plate 13 that is slidably provided on the guide rail, and supports the window glass 12, and a cable drive unit that is attached to the lower end of the guide rail 11. 14, a pulley 15 for changing the direction of the cable attached to the upper end, and a loop between the pulley and the cable drive unit 14 with a predetermined tension. A part of the pulley 15 is engaged with the carrier plate 13. Cable 16. FIG. 2 shows the rear side of the window regulator 10, that is, the state seen from the inside of the automobile, and FIG. 3 shows the front side. The guide rail 11 is gently curved so that the front side is convex according to the curvature of the window glass 12 of the automobile.

  As shown in FIG. 1, the guide rail 11 is formed by bending a thin metal plate such as a galvanized steel plate into a predetermined cross-sectional shape having a flat portion 21 and a rising portion 22, and cutting the upper end and the lower end into a predetermined shape. Formed. The rising portion 22 is configured by forming a double bent portion that is double-folded somewhat inside from the left side edge in FIG. The rising portion 22 protrudes on the convex side of the curve and extends in the longitudinal direction. A flat portion 21 having a slight width is left outside (on the left side) of the rising portion 22, so that the vicinity of the rising portion has a substantially T-shaped cross section. The right side edge of the flat portion 21 is a bent piece 23 that is bent to the opposite side of the rising portion 22. Thereby, rigidity becomes high. In the bending process, a roll forming machine or the like is used because the above-described curve may be provided.

  As shown in FIGS. 2 and 3, a support bracket 24 for attaching the guide rail to the door panel of the automobile is attached by welding or the like so as to cross the lower part from the upper end of the guide rail 11. A support bracket is not provided on the lower end side of the guide rail 11, and is also used as the drum housing 25 of the cable drive unit as will be described later. As shown in FIG. 4, the support bracket 24 supports the flat portion so that it floats somewhat, and nuts 26 are welded to the front sides of both ends. The nut 26 may be fixed by caulking.

  As shown in FIG. 4, the pulley 15 described above is rotatably attached to the upper end of the guide rail 11 by a shaft 27. The pulley 15 is usually made of synthetic resin, and an annular groove 28 for guiding the cable 16 is formed around the pulley 15. The shaft 27 is usually made of metal, and is swaged to the guide rail through the pulley 15. In some cases, the backing member made of a metal plate thicker than the guide rail may be caulked. Reference numeral 29 denotes a liner for improving slippage, and a guide groove 30 for guiding the cable 16 is formed in a part thereof.

  As shown in FIG. 5, the carrier plate 13 is a plate-like member having a substantially rhombus shape, and a slide groove 31 that is slidably fitted to the rising portion 22 of the guide rail 11 is formed on the back surface side. . On the back side of the carrier plate 13, sliding claws (reference numeral 32 in FIG. 2) holding both side edges of the guide rail 11 are provided. Further, a locking groove 33 for locking the cable 16 is formed adjacent to the sliding groove 31. In this embodiment, the cable is divided into an ascending cable 16a and a descending cable 16b, and a cable end (locking metal fitting) 34 fixed to each end is accommodated in the locking groove 33, and the inner end surface and Is engaged.

  A spring 35 is interposed between the cable end 34 and the inner walls of the upper and lower ends of the locking groove 33 to absorb the elongation (permanent elongation and elastic elongation) generated in the cable. In a general window regulator, the cable is connected to the guide rail via a conduit. Therefore, the casing cap can be held movably with respect to the drum housing, and a spring can be interposed between the casing cap and the drum housing. This is because the window regulator of the present invention cannot take such measures.

  Through holes 36 for fixing the window glass are formed at the left and right ends of the carrier plate 13. In this embodiment, the carrier plate 13 is made of a synthetic resin except for a metal portion integrated by insert molding on the inner periphery of the through hole 36 for stopping the window glass. However, the sliding portion and the protruding portion may be insert-molded with a synthetic resin with respect to the metal plate. Reference numeral 37 denotes a rib for increasing rigidity.

  The carrier plate 13a shown in FIG. 6a shows a case where an end cover 38 is provided so that the cable end 34 with the spring 35 interposed does not fall off from the locking groove 33. The end cover 38 has a main body 38 a that closes the opening of the locking groove 33, a mounting portion 38 b that is elastically locked to a mounting hole 13 b formed in the carrier plate 13 a, and a locking that protrudes from the opposite side of the main body 38. It consists of a piece 38c. The locking pieces 38c are provided as a pair of left and right, and a groove 38d having an arcuate cross section is formed on the lower surface of the main body 38a.

  As shown in FIG. 6b, the attachment portion 38b is provided with a pair of spring pieces 38e each having a V-shaped or U-shaped cross section, and the edge of the attachment hole 13b formed in the carrier plate 13a has a spring piece 38e. A step 13c for locking the tip is provided. Further, the carrier plate 13a is formed with a protrusion 39 for locking the locking piece 38c of the end cover 38. The protrusion 39 is formed with an insertion hole 39a for inserting the locking piece 38c. Yes. A groove 39b is formed on the surface of the carrier plate 13a so as to fit with the lower portion of the locking piece 38c.

  As shown in FIG. 1, the cable drive unit 14 includes the drum housing 25, a drum (reference numeral 40 in FIG. 8) rotatably accommodated in the drum housing, and a speed reducer G that rotationally drives the drum. And a motor M attached. In this embodiment, a worm gear reducer is used as the reducer G. The speed reducer G includes a cylindrical housing 41, a cover 42 that closes the upper end opening thereof, a worm wheel that is housed in the housing 41 so as to be rotatable concentrically with the drum, and meshes with the worm wheel, and the output shaft of the motor M And a worm fixed to the head. The housing 41 is made of synthetic resin, and the cover 42 is made of a thin metal plate.

  As shown in FIGS. 1 and 8, the lower end of the guide rail 11 coupled to the cable driving unit 14 is a strip-shaped opening that opens downward at a position near the rising portion 22 in the vicinity of the center of the flat portion 21. A notch 45 is formed. Thereby, the insertion protrusion 46 having a substantially T-shaped cross section in the vicinity of the rising portion 22 and an insertion piece 47 having a substantially L-shaped or key-shaped cross section on the other side edge side are divided. The insertion protrusion 46 is longer than the insertion piece 47. The difference is about the same as the difference in height between the upper end of the support base (reference numeral 56 in FIG. 1) and the leg (reference numeral 51b), which will be described later, but it is easier to insert if one of them is made longer. Therefore, it is preferable. A downward U-shaped slit 48 is formed in the flat portion of the insertion piece 47, and a portion surrounded by the slit is cut and raised obliquely to the front side to form a locking tongue piece 49 (FIG. 10b). reference).

  As shown in FIG. 8, the drum housing 25 includes a main body 50 having an approximately rectangular parallelepiped upper portion and a semicircular or semi-cylindrical lower portion, and three leg portions 51a protruding from both upper and lower sides of the main body. , 51b, 51c, and a motor attachment piece 52 integrated with the semicircular portion and the right leg 51a, respectively. A cylindrical recess 53 that accommodates the drum 40 is formed on the surface side of the main body 50, and a cable introduction groove 54 is formed through which the cable 16 passes from the recess toward the upper end. A cylindrical support shaft 55 that rotatably supports the drum 40 projects from the center of the inner bottom surface of the recess 53. In addition, a separate metal shaft can be used, and the drum can be rotatably supported by the outer peripheral surface of the drum 40 and the inner peripheral surface of the recess 53.

  As shown in FIGS. 1 and 10 a, a support base 56 or a stepped portion for supporting the back surface of the guide rail 11 protrudes from the upper end of the main body 50. The support base 56 has substantially the same lateral width as the main body 50, and its thickness is a little less than half. A pressing piece 57 that contacts the surface of the guide rail 11 protrudes from the upper end of the main body 50 so as to face the support base 56. A gap 58 is formed between the support base 50 and the pressing piece 57 so as to be fitted to the insertion piece 47 at the lower end of the guide rail 11. Further, as shown in FIG. Extends to the inside of the main body 50. The slit 59 has a cross-sectional key shape so that the insertion piece 47 having a cross-sectional key shape can be inserted. The slit 59 does not reach the recess 53.

  As shown in FIGS. 1 and 10a, the upper end of the main body 50 has a sliding contact projection that supports the ascending cable 16a so that the ascending cable 16a to which a large tension is applied does not enter between the drum 40 and the drum housing 25. 50a is protruded.

  As shown in FIG. 9, two protrusions 60 for tightly fitting the guide rail insertion piece 47 are provided on the surface of the support base 50 and the inner surface of the slit 59 continuous thereto. On the other hand, on the inner surface of the pressing piece 57 and the inner surface of the slit 59 continuous therewith, a protruding ridge 61 with a wide width facing the protruding ridge 60 protrudes. In addition, it can also be set as two protrusions corresponding to the holding piece side. Further, as shown in FIG. 10 b, the holding piece 57 is formed with a rectangular engagement hole 62 that engages with the locking tongue piece 49.

  Further, an insertion hole 64 having a substantially T-shaped cross section for fitting and fixing the insertion protrusion 46 at the lower end of the guide rail is formed on the upper surface of the leg portion 51b that protrudes to the left from the upper part of the main body. In order to tightly fit the insertion hole 64 with the insertion protrusion 46, a pair of protrusions that protrude from the inner side of the slit to face each other are provided at the base of the T-shaped leg and the right side of FIG. ing. Thereby, narrow portions 65 and 66 for sandwiching the insertion protrusion 46 are formed.

  As shown in FIGS. 8 and 10a, the drum 40 has a conventionally known form. In other words, a groove for guiding the cable is formed in a spiral shape on the outer periphery, a concave portion that is rotatably fitted to the support shaft 55 of the drum housing is provided on the lower surface, and a cross section that fits the output shaft of the speed reducer on the upper surface. A square star-shaped recess 67 is formed. In addition, on the upper surface and the lower surface, engagement holes for locking the cable ends of the ascending cable 16a and the descending cable 16b are formed.

  In order to assemble the drum housing 25 to the guide rail 11 configured as described above, first, the insertion piece 47 at the lower end of the guide rail 11 is inserted into the gap between the support base 56 and the pressing piece 57, and then the insertion protrusion 46 is inserted into the insertion hole. 64. Then, the entire lower end of the guide rail 11 is pushed into the drum housing 25 side. As a result, as shown in FIG. 10 b, the locking tongue piece 49 is snap-engaged with the inner surface of the upper end of the engagement hole 62 of the pressing piece 57 to prevent it from coming off. In this case, the difference between the upper end of the support base 56 and the upper end of the leg portion 51b is smaller than the difference between the insertion piece 47 and the insertion protrusion 46, and can be reversed. If the dimensional difference is the same, both of them need to be inserted at the same time, which is complicated.

  As described above, this window regulator has a simple drum housing configuration and can be easily mounted on a guide rail. As can be seen from FIG. 1, since the upper portion of the drum housing 25 is open, the drum 40 with the cable 16 assembled in advance can be accommodated in the drum housing 25, and the speed reducer G and the motor M can be assembled. And since the drum 40 is accommodated in the recess of the drum housing 25, it is safely protected, it is difficult for dust etc. to enter from the outside, and it has good grease.

  In the above-described embodiment, the guide rail having the double bent portion is provided, but guide rails having other cross-sectional shapes such as a guide rail in which bent pieces rise from both ends can be used. In the above embodiment, the lower end of the guide rail is divided into the insertion protrusion and the insertion piece by the notch, but it is not necessary to separate them. Further, depending on the required fitting strength, the locking tongue piece can be omitted. Further, the guide rail and the drum housing can be fixed by caulking. In that case, for example, a protrusion formed on the guide rail or a separate pin is inserted into a hole formed in the drum housing, and the tip thereof is caulked to the drum housing. In addition, although the leg portion is provided on the drum housing to serve as the support bracket, the support bracket can be provided separately.

It is a principal part perspective view which shows the lower part in one Embodiment of the window regulator of this invention. It is a rear view which shows the attachment state to the motor vehicle of the window regulator. It is a perspective view which shows the front side of the window regulator. It is a principal part perspective view which shows embodiment of the upper end guide part of the window regulator. It is a principal part perspective view which shows embodiment of the carrier plate of the window regulator. FIG. 6A is a perspective view of a main part before assembly showing another embodiment of the carrier plate, and FIG. 6B is a cross-sectional view of the main part after assembly of the carrier plate. FIG. 7A is a perspective view of the main part when viewed from the other direction of the carrier plate, and FIG. 7B is a cross-sectional view of the main part after the carrier plate is assembled. It is a front view which shows the drum housing and guide rail lower end of FIG. It is a top view which shows the drum housing with a guide rail. 10a is a cross-sectional view taken along line XX of FIG. 8, and FIG. 10b is an enlarged cross-sectional view of the main part of FIG. 10a. 11a is a front view showing an example of a conventional window regulator, and FIG. 11b is a right side view thereof. It is a principal part disassembled perspective view of the window regulator of FIG. 11a. FIG. 13a is a left side view showing another example of the conventional window regulator, and FIG. 13b is a rear view of the window regulator.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Window regulator 11 Guide rail 12 Window glass 13 Carrier plate 14 Cable drive part 15 Pulley 16 Cable 16a Ascending cable 16b Descent cable 21 Flat part 22 Standing part 23 Bending piece 24 Support bracket 25 Drum housing 26 Nut 27 Shaft 28 Annular groove 29 liner 30 guide groove 31 sliding groove 32 sliding claw 33 locking groove 34 cable end 35 spring 36 through hole 37 rib 13a carrier plate 13b mounting hole 13c stepped portion 38 end cover 38a main body 38b mounting portion 38c locking piece 38d groove 38e Spring piece 39 Protrusion 39a Insertion hole 39b Groove 40 Drum G Reducer M Motor 41 (of reducer) Housing 42 Cover 45 Notch 46 Insertion protrusion 47 Insertion piece 48 Slit 49 Locking tongue piece 50 Main body 51a 51b, 51c Leg 52 Motor attachment piece 53 Recess 54 Cable introduction groove 55 Support shaft 56 Support base 57 Holding piece 58 Clearance 59 Slit 60, 61 Projection 62 Engagement hole 64 Insertion hole 65, 66 Narrow part 67 Recess

Claims (5)

A guide rail, a carrier plate that is slidably provided on the guide rail, supports a window glass, a cable driving unit that is attached to one end of the guide rail, a direction change member of a cable that is attached to the other end, and A window regulator comprising a cable that is stretched between a direction changing member and a cable driving portion with a predetermined tension in a loop shape, and a part of which is engaged with a carrier plate,
The guide rail is formed by bending a metal plate into a predetermined cross-sectional shape having a flat part and a rising part,
The cable drive unit is
A synthetic resin drum housing provided with a fitting groove fitted to at least a part of the flat portion at one end of the guide rail and the rising portion;
A drum that is rotatably provided in the drum housing, winds up the end of the cable, sends out the other end, and circulates the drum;
A window regulator, comprising: a motor attached to the drum housing and configured to reciprocally drive the drum.   The window regulator according to claim 1, wherein the drum housing also serves as a bracket for supporting a lower portion of the guide rail.   The window regulator according to claim 1, wherein the rising portion of the guide rail is a double bent portion that rises from one side edge of the flat portion. The rising part of the guide rail is rising from one side edge of the flat part,
A notch portion that is divided into the vicinity of the rising portion and the other side edge side of the flat portion is formed at the end portion of the guide rail that is fitted to the drum housing,
2. The window regulator according to claim 1, wherein the vicinity of the rising portion extends longer than the other side edge.   One of the drum housing and the end of the guide rail fitted to the drum housing is provided with a tongue piece that is elastically deformed, and the other is provided with an engaging portion that engages with the tongue piece. The window regulator according to claim 1, 2, 3, or 4.