JP5139048B2 - Toothed belt and vehicle glass lifting device - Google Patents

Description

  The present invention relates to a toothed belt in which teeth meshing with a pulley or the like are formed and a connecting member for connecting a driving member such as a carrier is fixed in part, and a window glass for a vehicle using the toothed belt as an endless belt. It is related with the glass raising / lowering device for vehicles which raises / lowers.

  A window regulator that raises and lowers the window glass of an automobile is disposed between an outer panel and an inner panel that constitute a door panel of the automobile. The window glass moves up and down guided by a pair of side frames. The window regulator drives the window glass to move up and down by moving the window glass support portion (fastening portion) fixed to the window glass up and down by an endless belt. The endless belt is stretched over a drive pulley, an idle pulley, a retainer, and the like, and its movement trajectory is determined so as to move up and down in a part of the movement region. The endless belt has teeth formed on the inner surface, and meshes with the pulley and moves in the forward and reverse directions by forward and reverse rotation of the drive pulley. In this window regulator, a carrier is fixed to the endless belt in a moving locus in which the endless belt moves up and down, the carrier and the window glass support portion are connected, and the window glass is moved up and down by forward and reverse rotation of the endless belt.

  Patent Document 1 discloses a fixing device for fixing a carrier to the toothed belt, and forms a groove-shaped portion having a width approximately the same as the thickness when the toothed belt is meshed with the carrier. Protrusion-shaped part is installed in the vicinity of the groove-shaped part, the toothed belts are meshed with each other in a U-shape and fitted into the groove-shaped part, and the toothed so that the protrusion-shaped part is inside the U-shaped part. A structure in which a belt is connected is disclosed.

  Moreover, in the automatic door opening / closing device for a vehicle door disclosed in Patent Document 2 and the automatic door opening / closing device for a vehicle slide door disclosed in Patent Document 3, an iron plate (tooth plate) having a tooth shape is formed on the one surface of the belt material in which teeth are formed on one surface. Overlap, a plate-shaped iron plate (back plate) is stacked on the other surface where the teeth are not formed, and the belt material is sandwiched between the tooth plate and the back plate. A toothed belt for tightening the layer structure is disclosed. And the extension part extended from the part which overlaps with a belt raw material is provided in the said tooth | gear board or the back board, and this extension part is made into the connection part with another component.

JP-A-3-229046 JP 2006-37502 A JP-A-6-323058

  However, in the above-mentioned Patent Document 1, it is necessary to install a lid in order to prevent the toothed belt from coming out of the groove-shaped portion after the toothed belt is fitted into the groove of the carrier. There is a difficulty that is high. In addition, when a force is applied to the belt in the direction in which the belt is pulled, a local force acts on the corner of the entrance of the groove-shaped portion of the carrier, so the tensile force applied to the belt cannot be increased. . In addition, in order to provide the groove-shaped portion, the carrier needs to ensure a long length from the entrance to the protrusion-shaped portion to the groove-shaped portion. There is a difficulty that it will become.

  In Patent Documents 2 and 3, since the belt is clamped with an iron plate and screwed, the number of parts is large, such as a back plate, a tooth plate, and a bolt / nut. Therefore, the manufacturing cost is high, There is a problem that the mass becomes heavy. Furthermore, since the back plate and the tooth plate are overlapped on the belt material and tightened with bolts and nuts, the assemblability is poor. Furthermore, it is difficult to completely match the tooth shape of the tooth plate and the tooth shape of the belt material, and it is difficult to mesh all the teeth at the same time. There is a drawback that the strength tends to be weakened.

  SUMMARY OF THE INVENTION The present invention has been made in view of such problems, and it is possible to prevent an excessively large load from being applied locally, and a toothed belt that can be increased in strength, reduced in size, reduced in weight, and manufactured at a low cost. And it aims at providing the glass raising / lowering apparatus for vehicles using the same.

Toothed belt according to the present invention ,
A belt body having a belt shape and having a tooth shape formed on one or both sides thereof ;
By being partially and is integrally cast Guruma resin molding of the belt body, a connecting member made of the fixed to the belt body resin,
I have a,
The connecting member penetrates between at least four adjacent teeth of the belt body and is solidified, and the two resin portions solidified between the outermost teeth are between the teeth of the belt body. The belt main body is shaped so that the length in the longitudinal direction of the belt body is smaller than the groove .

  In the present invention, for example, in the connecting member, resin penetrates between the teeth of the belt main body and is solidified. In this case, the connecting member penetrates between at least four adjacent teeth of the belt main body and is solidified, and the two resin portions solidified between the outermost teeth are the belt main body. It is preferable that the length of the belt body in the longitudinal direction is smaller than the groove between the teeth.

Further, the belt body is a both end portions of one of the belt body which teeth are formed on two of the belt body or one side of teeth formed on one surface is brought into contact with a surface between which the teeth are not formed It is also possible to configure such that the connecting members are integrally resin-molded by casting the two tooth forming surfaces of the belt main body.

The vehicle glass lifting apparatus according to the present invention is as follows .
In a glass lifting device for a vehicle that is attached to an inner panel of a vehicle and moves a window glass movable in a first direction ,
An endless belt comprising the toothed belt of the present invention ;
A plurality of guide members for determining a movement locus of the endless belt such that a movement locus of a part of the endless belt is parallel to the first direction ;
A window glass support connected to the connecting member of the endless belt in a region that is fixed to the window glass and moves parallel to the first direction of the endless belt ;
An operation or drive unit for moving the endless belt in forward and reverse directions ;
Characterized in that it have a.

  According to the present invention, since the connecting member is integrally formed with the belt body by resin molding, the connecting member is only one point of the resin molded product, and the number of parts is remarkably reduced. For this reason, the connection member of this invention can be reduced in size and weight, and its manufacturing cost is also low. Further, since the resin penetrates between the teeth of the belt main body and is solidified, the strength is also high. Further, in the present invention, the belt main body is not bent at a right angle and fitted into the groove, and a large load does not act locally on the belt main body. Furthermore, the teeth of the belt body and the resin of the connecting member are in contact with each other, excluding or including both ends in the longitudinal direction of the connecting member, and transmit the load. Since the force acts evenly distributed on the teeth, a large driving force can be applied to the belt.

  Further, by applying the toothed belt of the present invention to an endless belt of a glass elevating device for a vehicle, it becomes possible to reduce the weight and extend the life of the vehicle and facilitate the operation of installing the window regulator.

  Hereinafter, embodiments of the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 is a diagram (a diagram viewed from the inside of a vehicle) showing a state in which a glass lifting device for a vehicle according to an embodiment of the present invention is installed on a right door of a rear seat of an automobile. The automobile door 1 includes a pair of side frames 3 and an upper frame 4 at the upper end of the window frame. The window glass 2 moves up and down while being guided by the side frame 3, and the upper end position thereof is regulated by the upper frame 4. ing.

  The window regulator 10 is disposed between an outer panel (not shown) on the vehicle door outer side and an inner panel 5 on the vehicle inner side. The window regulator 10 includes a pulley 14 disposed above, a retainer 15 disposed below, a holder 12 of an actuator 11 disposed in the middle in the vertical direction, and the pulley 14, the retainer 15, and the holder 12. An endless belt 16 stretched over three points is provided, and when the holder 12 is driven to rotate by the motor 13 of the actuator 11, the belt 16 is driven to rotate forward and backward. The belt 16 has teeth formed on the inner surface side, and the teeth of the belt 16 mesh with the teeth formed on the outer surface of the holder 12 and also mesh with the teeth provided on the peripheral surface of the pulley 14. Yes. The retainer 15 has a circumferential surface (half circumferential surface) on which the belt slides. The movement locus of the belt 16 is determined by the pulley 14, the retainer 15, and the holder 12, and the movement locus between the pulley 14 and the retainer 15 is the same as the up and down direction of the window glass 2. Of the movement trajectory of the belt 16, a large load for raising the window glass acts on the folding point of the upper end, and therefore a pulley 14 having teeth on the peripheral surface is used, and the folding point of the lower end is used. Since the application of the load is small, a retainer 15 that does not have teeth and has a peripheral surface for simply sliding the belt smoothly is used.

  A resin carrier bracket 17 described later is fixed to the belt 16 between the pulley 14 and the retainer 15 by integral molding. Further, a window glass support portion 19 is fixed to the lower edge of the window glass 2, and the support portion 19 and the carrier bracket 17 are fixedly connected by a bolt 18.

  The inner panel 5 has a hole (not shown) for fixing the pulley 14 to the inner panel 5 with a bolt and a nut (not shown). That is, a bolt is fixed to the pulley 14, and the bolt 14 is inserted into the hole to be exposed on the inner surface of the inner panel 5. The bolt is tightened with a nut from the inner side of the inner panel 5. Fixed to the panel 5. Similarly, the holder 12 is fixed to the inner panel 5 with bolts and nuts through holes formed in the inner panel 5.

  On the other hand, the retainer 15 is fixed to the inner panel 5 by being hooked on the inner panel 5 through a hole formed in the inner panel 5. The inner panel 5 is provided with a working hole for an operator to put a hand in the space between the inner panel 5 and the outer panel in order to perform these operations.

  2A and 2B are a transverse sectional view and a longitudinal sectional view showing the belt main body 30, respectively. The belt body 30 has teeth 34 formed on one surface of a rubber belt 31 such as chloroprene rubber or nitrile butadiene rubber (NBR), and a nylon woven fabric 33 is provided so as to cover the surface on which the teeth 34 are formed. 33 is lubricated. Further, in the belt body 30, a plurality of core wires 32 extending in the belt longitudinal direction are embedded in a rubber belt 31. The core wire 32 is made of, for example, glass fiber and is embedded in, for example, three rows in the width direction of the belt so as to reinforce the rubber belt 31.

  FIG. 3 is a cross-sectional view showing a toothed belt according to an embodiment of the present invention. A part of the belt body 30 is inserted into a resin molding die, and the resin is injected into the space surrounded by the mold, so that the injected resin is solidified around the belt body 30 in the space surrounded by the die. The belt main body 30 is cast with resin. Thereby, the resin molding 41 in which the belt main body 30 is embedded is obtained. The resin molded body 41 penetrates and solidifies between the teeth 34 of the belt main body 30 and contacts not only the surface of the belt main body 30 where the teeth 34 are not formed but also the uneven surface of the surface where the teeth 34 are formed. In close contact with the belt body 30. In the resin molded body 41, the convex portions 42 and 42a solidified in the grooves between the teeth 34 of the belt main body 30 mesh with the teeth 34 of the belt main body 30, so that the belt main body 30 and the resin molded body 41 (connecting member) 40) are firmly fixed to each other.

  At this time, the both ends of the resin molded body 41 in the longitudinal direction of the belt are chamfered at the corners on the belt main body side to form chamfered portions 43. The chamfered portion 43 can be formed by adjusting the shape of the resin molding die. Accordingly, a gap is formed by the chamfered portion 43 between the convex portion 42a at both ends of the resin molded body 41 in the belt longitudinal direction and the tooth 34 outside the convex portion 42a. In other portions, The uneven surface formed by the convex portion 42 of the resin molded body 41 and the concave portion between the convex portions 42 is in close contact with the uneven surface formed by the teeth 34 of the belt main body 30.

  Next, the operation of the toothed belt of the present embodiment configured as described above will be described. The connecting member 40 constitutes all of the carrier bracket 17 shown in FIG. 1 or a portion fixed to the belt 16. The belt body 30 is the endless belt 16. In this embodiment, since the connecting member 40 is formed by integrally molding the resin to the belt main body 30, the convex portion 42 of the resin molded body 41 is formed in a shape that matches the unevenness of the teeth 34 of the belt, The resin molded body 41 and the belt main body 30 can be in close contact with each other. For this reason, the stress applied to the belt main body 30 or the resin molded body 41 is transmitted to the other with a large contact area, and the force acts evenly distributed on each tooth, so that there is no local strength variation. . Therefore, the toothed belt of the present embodiment has high strength and can apply a large driving force to the belt body.

  Further, since the connecting member 40 is obtained by integral molding of resin, the connecting member is only one point of the resin molded product, and there are advantages that the number of parts is remarkably small, the manufacturing is easy, and the manufacturing cost is low. . Moreover, since the connection member 40 should just have the shape which can fill the part between the teeth | gears 34 of the belt main body 30, the dimension of the direction perpendicular | vertical to the surface of the belt main body 30 can be made small, and connection is possible. The member 40 can be reduced in size and weight.

  In the present embodiment, since the chamfered portions 43 are formed at both ends of the resin molded body 41 in the belt longitudinal direction, the both end surfaces of the resin molded body 41 are in contact with the side surfaces of the teeth 34 of the belt main body 30. There is a gap between them. Therefore, as shown in FIG. 4, when a force in the bending direction acts on the belt main body 30, the belt main body 30 can be easily bent using the gap between the chamfered portion 43 and the tooth side surface. It is possible to prevent excessive stress from acting on both ends of the resin molded body 41. However, as shown in FIG. 1, in this vehicle glass lifting apparatus, the carrier bracket 17 does not reach the position where the belt bends.

  Further, in the present invention, the belt main body is not bent at a right angle and fitted into the groove, and a large load does not act locally on the belt main body. Further, by bringing the end portion (resin parting) of the resin molded body 41 into the recess between the teeth 34 of the belt main body 30, the average thickness of the resin molded body 41 can be set in the belt longitudinal direction of the resin molded body 41. It can be made thicker for its length. For example, in FIG. 3, a 3/5 portion of the length of the resin molded body 41 in the longitudinal direction of the belt is a portion that fills the recesses between the belt teeth and is formed to be thick. Is the thin part on the belt teeth. Therefore, the average thickness of the resin molded body 41 can be increased, and the strength of the resin molded body 41 can be increased.

  FIG. 5 is a sectional view showing another embodiment of the present invention. The present embodiment relates to a resin molded body 51 in which a resin is integrally formed on the recesses between the three teeth 34 of the belt body 30 and the teeth 34 at both ends, and the resin parting is on the teeth 34. It is. Since both ends of the resin molded body 51 are on the teeth 34 of the belt main body 30, the average thickness of the resin molded body 51 is smaller than that of the embodiment of FIG. For this reason, the strength of the resin molded body 51 is slightly low. Further, chamfered portions 52 similar to those in FIG. 3 are formed at the corners on both sides of the resin molded body 51 on the belt main body 30 side. The effect of facilitating the bending deformation of the belt main body 30 by the chamfered portions 52 is as follows. Absent. In other words, even without the chamfered portion 52, the belt body 30 can be easily bent and deformed in the present embodiment.

  Further, when the length of the connecting member in the longitudinal direction is the same, it is preferable that the belt body 30 is integrally formed with the connecting member so that the number of teeth of the belt body surrounded by the connecting member is increased. For example, in the case of the embodiment of FIG. 3, the two teeth of the belt body are surrounded by the convex portion 42 of the connecting member, whereas in the embodiment of FIG. 5, only one tooth of the belt body is included in the connecting member. It is not surrounded by convex parts. The teeth at both ends in the longitudinal direction of the connecting member are exposed. According to the embodiment of FIG. 5, when the belt body is pulled in the longitudinal direction with respect to the connecting member, the teeth 34 located at the end in the direction opposite to the pulling direction are caused by the convex portions of the adjacent connecting member. Pressed and deformed in the direction opposite to the tensile direction. On the other hand, when both sides of the teeth located at the end in the longitudinal direction are surrounded by the projections of the connecting member as shown in FIG. 3, even if the belt body is pulled against the connecting member, the pulling direction The deformation of the tooth 34 located at the end opposite to the direction is suppressed by the convex portion of the connecting member. Therefore, the embodiment of FIG. 3 has a higher tensile strength.

  FIG. 6 is a cross-sectional view showing still another embodiment of the present invention. In the present embodiment, the two belt main bodies 53 are brought into contact with each other on the surfaces on which the teeth 54 are not formed, and the teeth 54 are overlapped in directions opposite to each other. 55 is formed integrally with the belt main body 53. Thus, in this embodiment, the back portions of the belt main body 30 are connected to each other. The resin molded body 55 may be configured to connect two belt main bodies, or a connecting portion that forms an endless belt by connecting both ends of one belt main body as shown in FIG. It is good.

  Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications can be made within the technical scope based on the description of the claims of the present invention. For example, the resin body of the present invention can be provided not only on the belt body having teeth formed on only one side but also on the belt body having teeth formed on both sides. Further, the toothed belt of the present invention can be applied to a toothed belt for various uses as well as the vehicle glass lifting device, and has the same effect as described above.

It is the figure which looked at the state which installed the glass raising / lowering apparatus for vehicles incorporating the toothed belt which concerns on embodiment of this invention in the right side door of the back seat of a motor vehicle from the vehicle inside. (A), (b) is the cross-sectional view and longitudinal cross-sectional view which respectively show the belt main body of the toothed belt of embodiment of this invention. It is a longitudinal section showing a toothed belt of an embodiment of the present invention. It is a longitudinal cross-sectional view which similarly shows the operation | movement. It is a longitudinal cross-sectional view which shows the toothed belt of other embodiment of this invention. It is a longitudinal cross-sectional view which shows the toothed belt of other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door 2 Window glass 3 Side frame 4 Frame 5 Inner panel 10 Window regulator 11 Actuator 12 Holder 13 Motor 14 Pulley 15 Retainer 16 Belt 17 Carrier bracket 18 Bolt 19 Support part 30 Belt main body 31 Rubber belt 32 Core wire 33 Nylon woven cloth 34 Tooth 40 connecting member 41 resin molded body 42 convex portion 42a convex portion 43 chamfered portion 51 resin molded body 52 chamfered portion 53 belt main body 54 teeth 55 resin molded body

Claims (4)

A belt body having a belt shape and teeth formed on one or both sides thereof;
A resin connecting member fixed to the belt body by being cast and integrally molded with a part of the belt body, and
Have
The connecting member penetrates between at least four adjacent teeth of the belt body and is solidified, and the two resin portions solidified between the outermost teeth are between the teeth of the belt body. toothed belt you characterized in that the longitudinal length of the belt body is formed to be smaller than the groove. The belt body has two belt bodies with teeth formed on one surface or one belt body with teeth formed on one surface, and both ends of the belt body are overlapped with the surfaces not formed with the teeth in contact with each other. And
The connecting member is toothed belt according to claim 1, characterized in that it is two teeth forming surface of the cast Guru Marete integrally molded of the belt body. A belt body having a belt shape and teeth formed on one or both sides thereof;
A resin connecting member fixed to the belt body by being cast and integrally molded with a part of the belt body, and
Have
The belt body has two belt bodies with teeth formed on one surface or one belt body with teeth formed on one surface, and both ends of the belt body are overlapped with the surfaces not formed with the teeth in contact with each other. And
The connecting member, toothed belt, characterized in that it is two teeth forming surface of the cast Guru Marete integrally molded of the belt body. In a glass lifting device for a vehicle that is attached to an inner panel of a vehicle and moves a window glass movable in a first direction ,
An endless belt comprising the toothed belt according to any one of claims 1 to 3 ,
A plurality of guide members for determining a movement locus of the endless belt such that a movement locus of a part of the endless belt is parallel to the first direction ;
A window glass support connected to the connecting member of the endless belt in a region that is fixed to the window glass and moves parallel to the first direction of the endless belt ;
An operation or drive unit for moving the endless belt in forward and reverse directions ;
Glass lifting device for a vehicle, characterized by have a.

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