JPH0446056Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a geared wire type wind regulator for an automobile.

As an automobile window regulator, a flexible geared wire with spirally protruding teeth formed on the outer periphery of the wire is slidably inserted into an outer tube, and a portion of the geared wire is shown in the figure below. The lower edge of the window glass is connected to the geared wire, and an electric motor and a gear reducer are attached to the door or the inner panel of the vehicle body. A gear attached to the output shaft of the electric motor is configured to mesh with the geared wire, and when the electric motor rotates, the gear attached to the output shaft is decelerated and rotated via a gear reducer, and the geared wire meshed with the gear is rotated in the longitudinal direction. A so-called geared wire type power window regulator is already in general use, in which a window glass connected to the geared wire is opened and closed by sliding.

Conventionally, geared wire type power window regulators require a reducer consisting of a combination of a worm gear and a worm wheel to reduce the rotation of the electric motor as described above, so the drive part of the wind regulator is large. This has the problem of increasing the weight, and furthermore, at the meshing part between the gear (helical gear) provided on the output shaft of the reducer and the geared wire, the geared wire is attached to the outer tube. It has the disadvantage that it is pressed against one side and its sliding resistance makes it difficult to operate.

In response to the above, the applicant has developed a geared wire type power window regulator in which the geared wire is directly operated by the output shaft (motor shaft) of the electric motor itself without requiring a reduction gear, and the patent application filed in 1983- A patent application is pending as No. 228819.

This invention further improves the geared wire type window regulator for which the patent is pending, and aims to reduce the load on the geared wire when opening and closing the window, and prevent the geared wire from becoming stuck when the window is fully open or fully closed. This is how it was done.

That is, in a geared wire type window regulator, when the window glass rises or falls to the upper limit position or the lower limit position, the window glass contacts the weather strip or the lower limit stopper and is restrained from moving further. At that time, the electric motor continues to rotate to a certain extent to ensure that the window is completely closed or fully opened, so even after the window glass is restrained from moving, while the electric motor continues to rotate, the geared wire A considerably large tensile or compressive load acts on the wire, causing deformation in the longitudinal direction, and in severe cases, the geared wire may break.

A large load also acts on the meshing portion between the gear or screw on the electric motor side and the geared wire, causing the meshing portion to bite and cause a problem called a locking phenomenon.

The present invention has as its main object to address the above-mentioned problems in the prior art, and will now be described with reference to the accompanying drawings.

In FIG. 1, 1 is a window glass, 2 is a flexible geared wire, and the geared wire 2 is slidably inserted into an outer tube 3 having a predetermined rigidity, and is arranged on a door or an inner panel of the vehicle body. One end of the geared wire 2 is connected to the vicinity of the lower edge of the window glass 1 via a bracket 4.

Reference numeral 8 denotes a guide rail attached to a door or an inner panel of the vehicle body, and the window glass 1 is guided by this guide rail 8 to move up and down. Reference numeral 4a denotes a guide piece such as a roller or slider attached to the bracket 4, and the guide piece 4a is fitted onto the guide rail 8 so as to be able to roll or slide.

Reference numeral 7 denotes a drive section consisting of an electric motor 5 and a bracket 6 for mounting the electric motor, and the drive section 7 is attached to a door or an inner panel of the vehicle body.

The electric motor 5 has a motor shaft 51 formed of a pipe-shaped hollow shaft, and a geared wire 2 is connected inside the hollow shaft.
is inserted therethrough, and a female screw member 52 into which the geared wire 2 is screwed is provided at both ends or one end of the motor shaft 51 made of a hollow shaft, and when the geared wire 2 is screwed into the female screw member 52, the motor shaft The geared wire 2 passes through the inside of the window guide 51 and is threaded through the rotation of the motor shaft 51 to operate in the longitudinal direction, thereby opening and closing the window guide 1.

The electric motor 5 is configured such that the direction of rotation of the motor shaft 51 can be changed by changing the direction of energization to a rotor that is integrally provided on the outer circumference of the motor shaft 51.The internal structure of the electric motor 5 is Since it is the same as a very common electric motor, detailed illustration and explanation will be omitted.

In the geared wire type wind regulator as described above, in the present invention, an elastic body such as rubber is interposed at the attachment part of the female threaded member 52 to the motor shaft 51 to reduce the load on the side of the geared wire 2 screwed onto the female threaded member 52. It is designed to be absorbed by the elastic deformation of an elastic body.

2 to 5 are diagrams showing an example of the mounting structure of the female threaded member 52 to the motor shaft 51 in the present invention, and the female threaded member 52 is attached to a main body having a female thread 52b in the center as shown in FIGS. 3A and 3B. Two legs 52c, 52c are formed protruding from the outer circumference of the attachment 52a, and two legs 53 of an attachment 53, which will be described later.
The attachment 53 has two notches 52d and 52d into which the motor shafts 53c and 53c are fitted with a predetermined margin in the rotational direction, and the attachment 53 has a motor shaft 51 in the center as shown in FIG. It has a structure in which two legs 53c are formed protruding from the outer periphery of a main body 53a which has a through hole 53b through which the geared wire can freely pass through while the end portion is inserted and fixed,
As shown in FIGS. 5A and 5B, the elastic body 54 is attached to the outer peripheral surface of an annular main body 54a having a through hole 54b communicating with the through hole 53b of the attachment 53 in the center thereof, and is attached to the leg portion of the female screw member 52. 52c, 52
Notches 54c, 54c into which the screws c fit, and notches 54 into which the legs 53c, 53c of the attachment 53 fit.
d and 54d are formed at approximately equal intervals.

and attachment 53 as shown in FIG.
leg portions 53c, 53c of and leg portion 5 of the female screw member 52.
2c, 52c are notches 54d, 54 of the elastic body 54
The elastic body 54 is overlapped between the attachment 53 and the female threaded member 52 in a state where the elastic body 54 is fitted into the attachment holes 54c and 54c. In this state, the legs 53c, 53c of the attachment 53 fit comfortably into the notches 52d, 52d of the female threaded member 52, and the female threads are inserted into the grooves 53d, 53d formed on the inner surface of the tips of the legs 53c, 53c. Part 5
A female screw assembly is constructed by fitting the stopper 55 for preventing the second slip-off.

Then, the tip of the motor shaft 51 is fitted into the through hole 53b of the attachment 53, and the attachment 53 is fixed to the motor shaft 51 with a fixing member 56 such as a fixing pin or screw, thereby assembling the female screw assembly to the motor shaft 51.

According to the present invention configured in this manner, the rotation of the motor shaft 51 is caused by the legs 53c of the attachment 53,
53c to the legs 52c, 52c of the female threaded member 52 via the portion 54e between the notches 54d and 54c of the elastic body 54, and the load on the side of the geared wire 2 screwed into the female thread 52b of the female threaded member 52. While this is small, the female screw member 52 rotates almost integrally with the motor shaft 51, screws the geared wire 2, and performs a predetermined window glass opening/closing operation.

When the window glass reaches the fully open or fully closed position and further operation is restrained, at that moment the electric motor continues to rotate and the load on the geared wire 2 becomes large, the portion 54e of the elastic body 54 is compressively deformed due to the load. death,
Due to the compressive deformation of the elastic body 54, the geared wire 2
The overload applied to the geared wire 2 is absorbed and reduced, and problems such as elongation deformation of the geared wire 2 itself and accompanying breakage are prevented, and biting of the threaded portion between the female thread 52b and the geared wire 2 is also significantly reduced.

Further, the impact load applied to the geared wire at the time of starting the electric motor 5 is absorbed by the elastic deformation of the elastic body 54, and the life of the geared wire 2 can be significantly extended.

The range of relative rotation between the attachment 53 integrated with the motor shaft 51 and the female screw member 52 due to the elastic deformation of the elastic body 54 is limited to
3c and a notch 52d of the female screw member 52 into which it fits.
However, as shown in FIGS. 3 and 4, the notch 52 of the female thread member 52
It is sufficient to prevent overload and biting of the geared wire by setting the rotational direction angle range α of d to about 50° to 90° and setting the angular range β of the legs 53c of the attachment 53 to about 45°. can achieve the functions and effects of

As described above, according to the present invention, the motor shaft of the electric motor is constituted by a hollow shaft, and a female thread member is provided at both ends or one end of the motor shaft, and when a geared wire is screwed into the female thread of the female thread member, the hollow By passing the geared wire through the inside of the motor shaft, and by the rotation of the electric motor, the geared wire is threaded through the threaded part with the female thread to open and close the window glass, eliminating the need for a speed reducer, etc., which was required in conventional devices. This eliminates the need for a geared wire, which significantly simplifies the structure of the drive part, makes it smaller and lighter, and by interposing an elastic body in the joint between the motor shaft and the female threaded member, the large load applied to the geared wire can be absorbed by the elastic body. It is possible to reduce absorption by elastic deformation of the geared wire, and also prevent the problem of geared wire digging, which can significantly extend the life of the geared wire and provide an extremely good operating feeling. In combination with low cost and low cost, it can bring about great practical effects.

[Brief explanation of the drawing]

Fig. 1 is an overall front view showing an embodiment of the present invention, Fig. 2 is a front view showing a specific structural example of the section X in Fig. 1, and Fig. 3 A and B are half of the internally threaded member in Fig. 2. 4A and 4B are front views and Y' arrow views of the attachment in Figure 2, and Figures 5A and 5B are one half of the elastic body in Figure 2. They are a front view and a Y″ arrow view shown in cross section. 1...Window glass, 2...Geared wire, 3...
Outer tube, 5... Electric motor, 51... Motor shaft, 52... Female thread member, 53... Attachment, 54... Elastic body, 6... Motor mounting bracket, 7... Drive unit, 8... Guide rail .

Claims (1)

[Scope of utility model registration request] A flexible geared wire with spiral protruding teeth formed on the outer periphery of the wire is slidably fitted into an outer tube and disposed on a door or an inner panel of a vehicle body, and the geared wire is coupled to a window member, and the geared wire is attached to the door. Alternatively, in a geared wire type window regulator in which a window member is opened and closed by sliding in the longitudinal direction with an electric motor attached to an inner panel of a vehicle body, the motor shaft of the electric motor is configured with a hollow shaft, An attachment consisting of a cylindrical body to be fitted to the motor shaft and a plurality of legs protruding in the axial direction from the outer peripheral end surface of the main body is fitted to the end of the motor shaft, and has a female thread in the center. A female screw member consisting of a main body and a plurality of legs protruding in the axial direction from an outer peripheral end surface of the main body is provided with a predetermined gap between the plurality of legs of the female thread member in the rotational direction between the plurality of legs of the attachment. and then assemble it to the attachment using the stopper to prevent it from coming out.
An elastic body is interposed between the attachment and the female thread member, and the elastic body is provided with a plurality of notches on the outer periphery of an annular body having a through hole in the center, into which the legs of the attachment and the female thread member fit, respectively, With the geared wire screwed into the female thread of the female thread member, the geared wire is passed through the through hole of the elastic body, the attachment, and the motor shaft, and the rotation of the motor shaft moves from the attachment to the part between the notches of the elastic body. 1. A wind regulator for an automobile, characterized in that the geared wire is transmitted to the female threaded member through the screw thread and threaded in the longitudinal direction.