KR20120052888A - Fastening system and fastening method - Google Patents

Abstract

PURPOSE: A fixing system and a fixing method are provided to easily mount a wiper operating device with reduced members. CONSTITUTION: A fixing system(100) comprises a first fixing member(105) and a second fixing member(110). The first fixing member includes a first recess(155), a second recess, a first supporting member(180), and a second supporting member(185). The first recess accommodates a cylindrical end section(135) of a wiper operating device(115). The first supporting member is supported by the second fixing member in a first recess area. The second fixing member includes an accommodation part for the first fixing member and first and second holding members. The accommodation part for the first fixing member is corresponded to the first supporting member of the first fixing member. The first and second holding members are form-fitted into a vehicle body member(122).

Description

Fastening system and fastening method

The present invention relates to a fastening system for mounting a wiper drive in a vehicle body having a viewing glass according to the preamble of claim 1, and a mounting method according to the preamble of claim 10.

For example, a wiper drive for a rear window of an automobile typically includes an electric motor having a reduction gear device and a drive shaft. The drive shaft is controlled to rotate forward and backward by a predetermined angle such that the wiper arm associated with the drive shaft can guide the wiper blade to vibrate within the bow on the rear window. In this case, the wiper drive is mounted so that the drive shaft extends through the corresponding opening of the rear window. In order to secure the wiper drive to the motor vehicle, a number of members are required. The first member forms a seal against dust and moisture between the rear window and the drive shaft. The other member connects the wiper drive with a vehicle body part, in particular a rear lid, which is connected to the rear window or the rear window by a pressure fit. In order to ensure that vibrations generated by the wiper drive are not transmitted to the vehicle, ie where vibrations can be perceived unpleasantly in the form of noise, a fixed vibration damping decoupling of the wiper drive is also required.

Since different members have to be implemented differently in different models of vehicles in some cases, a large number of different embodiments of the members need to be provided for the universal use of the wiper drive in different vehicles. In addition, in some cases, a number of logistical and mounting costs are required to provide each matching member during the manufacturing process of the vehicle and to accurately mount each other.

It is an object of the present invention to provide a simply mountable securing system for a wiper drive with a reduced number of members. It is also an object of the present invention to provide a mounting method for a fixed system.

The problem is solved by a fixing system with the features of claim 1 and by a method comprising the steps of claim 10. The dependent claims present preferred embodiments.

The fastening system according to the invention for mounting the wiper drive to a body member with a viewing glass comprises first and second fastening members. The first securing member is a first recess for receiving the cylindrical end section of the wiper drive, a second recess for the penetration of the drive shaft of the wiper drive, axially adjacent, extending coaxially with respect to the first recess. The recess includes a first support member supported by the second fixing member in the region of the first recess, and a second support member supported by the penetrating portion of the viewing glass of the vehicle body member in the region of the second recess. The second fastening member includes a first fastening member accommodating portion corresponding to the first support member of the first fastening member, and first and second holding members for fastening the shape fitting engagement method to the vehicle body member.

By means of the fixing system, the task of sealing the wiper drive against the viewing glass and the separation of vibration of the wiper drive from the vehicle body member by the integrated first fixing member can be met. The pressure fitting engagement type fixing of the wiper drive to the vehicle body member is made by the second fixing member. The second fixing member may be "hard" fixed to the vehicle body member. That is, decoupling members are not needed in this area. For example, the axial covering of the end section of the wiper drive by the covering cap can be omitted.

The two fastening members are matched with one another and can be manufactured in various variants for use in a block manner in various bodywork members and / or in various wiper drives. As a result, various embodiments of the wiper drive may be saved.

The second fixing member may be installed such that the first fixing member presses the viewing glass in the axial direction. Due to this, vibration damping of the first fixing member can be improved and the adhesion between the first fixing member and the viewing glass can be increased.

Since the first fastening member can be installed to expand radially under axial compression, it is pressed against the through portion of the viewing glass and the cylindrical end section of the wiper drive. Due to this, the force flow between the wiper drive and the first fixing member can be improved. The force flow is sized so that the wiper drive is sufficiently fixed and supported by the expansion of the first fastening member, so that no other support of the wiper drive is necessary.

In an embodiment the first support member comprises three cylindrical sections adjacent to each other in the axial direction, the intermediate section having an outer diameter corresponding to the inner diameter of the receiving portion of the second fastening member, and the outer sections having a larger outer diameter.

Since the engagement between the first and second fastening members is made between the outer sections, the two fastening members are engaged with each other in the axial direction and the radial direction, whereby a good fastening can be achieved.

In a corresponding manner, the second support member may comprise three cylindrical sections which are adjacent to each other in the axial direction, the intermediate section having an outer diameter corresponding to the inner diameter of the penetrating portion of the viewing glass, and the outer sections having a larger outer diameter.

As mentioned above, this can improve the axial and radial force flow between the viewing glass and the first fixing member.

If the two support members are implemented as described above, the support members can be separated from each other by a cylindrical section, the section having an outer diameter smaller than the outer diameter of the outer section of the support member.

In this way, decoupling between the support members can be realized, which enables a certain, limited flexibility between the wiper drive and the viewing glass.

The first fastening member includes sealing lips in contact with the drive shaft, two axially spaced, so that a chamber for receiving oil is formed between the sealing lips. The oil contributes to lowering the coefficient of friction between the first fastening member and the drive shaft of the wiper drive and can support the sealing action of the first fastening member to the drive shaft. With a suitable oil, the sealing lip remains flexible for a long time, so that the sealing lip can perform a good sealing function longer.

The first fastening member may also comprise a sealing lip supported in an annular groove in the cylindrical end section of the wiper drive in the region of the first recess. This may allow engagement of the wiper drive into the first fastening member during mounting. Thus, the correct placement of the wiper drive relative to the first fastening member can be transmitted to the operator during mounting. The sealing lip can also contribute to improving the fixing of the wiper drive to the first fixing member.

The second fixing member may comprise an opening for receiving the torque arm of the wiper drive. In this case, the first fastening member only needs to transmit the axial force between the wiper drive and the viewing glass or the second fastening member, and thus can be designed to be small in size.

The method according to the invention for mounting the wiper drive to a body member having a viewing glass by means of the above described fastening system provides a method for the attachment of the first fixing member into the penetration of the viewing glass such that the second support member contacts the penetration of the viewing glass. Inserting, mounting the second fixing member to the first fixing member such that the first supporting member of the first fixing member contacts the receiving portion of the second fixing member, the cylindrical shape of the wiper drive into the recess of the first fixing member Inserting the end section and the drive shaft, and securing the holding member of the second fixing member to the vehicle body member.

Preferably the fastening system can be used in a series of simple working steps to fasten the wiper drive to the body member. Therefore, the cost due to the wiper drive incorrectly mounted on the body member can be prevented.

The present invention provides a simply mountable securing system for a wiper drive with a reduced number of members.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a longitudinal sectional view of a fastening system;
2 is a longitudinal sectional view of the member of the fastening system of FIG.
3 is a plan view of another member of the fastening system of FIG.
4 is a flow chart of a method for mounting the wiper drive to a body member by means of the securing system according to FIG. 1.

1 shows a longitudinal cross-sectional view of a securing system 100. The fastening system 100 includes a first fastening member 105 and a second fastening member 110. Also shown is a wiper drive 115 and a viewing glass 120 that is part of the vehicle body member 122. The wiper drive 115 includes a drive motor 125 and a drive shaft 130. The drive motor 125 is preferably an electric drive motor and optionally includes a reduction gear device. The drive motor 125 ends in the cylindrical section 135 in the axial direction. Cylindrical section 135 includes an annular groove 140. The drive shaft 130 extends along the longitudinal axis 145 coaxially with respect to the cylindrical section 135.

The drive shaft 130 of the wiper drive 115 extends through the penetrating portion 150 in the viewing glass 120.

The first fixing member 105 is made of a permanent elastic material, such as plastic or rubber, and is formed rotationally symmetric about the longitudinal axis 145. The first fixing member 105 includes a first recess 155 in which a portion of the cylindrical section 135 is received in a shape fit engagement manner. The annular sealing lip 160 of the first fixing member 105 in the region of the first recess 155 is in the annular groove 140 of the cylindrical section 135 of the drive motor 125 of the wiper drive 115. It is placed in the form of fitting fit.

The second recess 165 in the first fixing member 105 is adjacent to the first recess 155 in the axial direction. The drive shaft 130 of the wiper drive 115 extends through the second recess 165. On the inner surface of the second recess 165 two annular sealing lips 170 are formed spaced apart from each other along the longitudinal axis 145. An oil reservoir is formed between the sealing lip 170 and the drive shaft 130 to receive the sealing or lubricating oil.

The outer surface of the first fastening member 105 is subdivided into seven axial sections 105.1 to 105.7 from left to right. The axial sections 105.1 to 105.3 form the first support member 180 and the sections 105.5 to 105.7 form the second support member 185. Between the support members 180 and 185 lies an axial section 105.4 of the first fixing member.

The section 105.2, which is the middle section of the first support member 180, has an axial length corresponding to the thickness of the second fastening member 110. The axial length of the section 105.6 corresponds to the thickness of the viewing glass 120. The remaining sections 105.1, 105.3, 105.4, 105.5 and 105.7 have substantially the same axial length. The transition between the first recess 155 and the second recess 165 is in the region of section 105.4.

The outer diameters of the sections 105.1 and 105.3 on both sides of the middle section 105.2 of the first support member 180 have a larger outer diameter than the middle section 105.2. The outer diameter of the section 105.3 disposed on the right side is larger than the outer diameter of the section 105.1 disposed on the left side.

The sections 105.5 and 105.7 on both sides of the intermediate section 105.6 of the second support member 185 have a larger outer diameter than the intermediate section 105.6 in a corresponding manner. The outer diameter of the section 105.5 disposed on the left side is larger than the outer diameter of the section 105.7 disposed on the right side.

The outer diameter of the intermediate section 105.2 of the first support member 180 is larger than the outer diameter of the intermediate section 105.6 of the second support member 185, but in the area of the intermediate section 105.2 the wall thickness is equal to the intermediate section (105.2). 105.6).

FIG. 2 shows a longitudinal sectional view of the first fastening member 105 of the fastening system 100 according to FIG. 1. The second fixing member 105, the wiper drive 115 and the viewing glass 120 are not shown.

3 shows, in plan view, a second fastening member 110 of the fastening system 100 according to FIG. 1. The first fixing member 105, the wiper drive 115 and the viewing glass 120 are not shown. The second fixing member 110 is preferably made of a metal sheet and may be made of flat or flat sheets. The second fixing member 110 is a receiving portion 205 for supporting the first supporting member 180 of the first fixing member 105 in the region between the sections 105.1 and 105.3 as shown in FIG. 1. ). When the second fixing member 110 is mounted to the first fixing member 105, the longitudinal axis 145 extends through the center of the receiving portion 205. The two holding members 210 extend in different radial directions with respect to the longitudinal axis 145. The holding member 210 has an opening 215 at its end through which a screw, nivet, bolt or other fastening member connects the holding member 210 of the second fastening member 110 to the vehicle body member 122. Can be accommodated for connection. Part of the vehicle body member 122 is the viewing glass 120 of FIG. 1.

The second fixing member 110 is bent by an angle smaller than 90 ° along the two bending lines 220. In another embodiment, the second fastening member 110 is also bent in a reverse direction along a bending line extending parallel to the bending line 220 outward in the region of the holding members 210, thereby holding members 210. ) Is bent.

The second fixing member 110 is bent such that an axial force is applied to the first fixing member 105 when the second fixing member 110 is fixed to the vehicle body member 122 by the holding member 210. Thus, the first fixing member 105 is axially compressed between the second fixing member 110 and the viewing glass 120. Then, the first fixing member 105 is expanded in the axial direction so that the cylindrical shape of the first fixing member 105 and the wiper drive 115 between the first fixing member 105 and the viewing glass 120. There is a tolerable force flow between the sections 135. In one embodiment, the force flow is sufficient to fix the wiper drive 115 in an axial direction and in a rotational direction about the longitudinal axis 145. In another embodiment, the drive motor 125 of the wiper drive 115 is equipped with an extension, which extends into the receiving portion 225 of the second fixing member 110. The illustrated receiving portion 225 can alternatively be used to engage the second fixing member 110 with the first fixing member 105 in the radial direction. If the receiving portion 225 is not provided as shown, mounting of the second fixing member 110 to the first fixing member 105 may be made axially with respect to the longitudinal axis 145.

4 shows a flowchart of a method 400 for mounting a wiper drive 115 to a body member 122 having a viewing glass 120 by the fixing system 100 of FIG. 1.

In a first step 405, the first fixing member 105 is inserted into the penetrating portion 150 of the viewing glass 120. This process is supported by the flexibility of the first fastening member 105.

In a second step 410, the second fastening member 110 is mounted to the first fastening member 105. As described above with respect to FIG. 3, the mounting in the radial direction may be by the receiving portion 225 or the mounting in the axial direction may be by the use of the flexibility of the first fixing member 105.

In the next step 415, the wiper drive 115 is inserted into the first fastening member 105, whereby the cylindrical section 135 lies in the first recess 155 and the annular shape of the first fastening member 105. The sealing lip 160 engages into the annular groove 140 of the cylindrical section 135. The drive shaft 130 extends through the second recess 165 and contacts the first fastening member in the region of the sealing lip 170 via the penetrating portion 150 of the viewing glass 120.

In the last step 420, the second fixing member 110 is fixed to the vehicle body member 122. The fixation is preferably made by a self-locking screw extending through the opening 215 of the holding member 210.

100 fixing system
105 fixing member
110 fixing member
115 wiper drive
120 viewing glass
122 Body member
130 drive shaft
150 penetration
155 recess
165 recess
170 sealed lip
180 support member
185 support member

Claims (10)

In the fastening system 100 for mounting the wiper drive 115 to a body member 122 having a viewing glass 120,
The fastening system includes a first fastening member 105 and a second fastening member 110,
The first fixing member 105 is
A first recess 155 for receiving a cylindrical end section 135 of the wiper drive 115,
A second recess 165 for penetration of the drive shaft 130 of the wiper drive 115, axially adjacent, extending coaxially with respect to the first recess 155,
A first support member 180 supported by a second fixing member 110 in the region of the first recess 155, and
A second support member 185 supported in the through portion 150 of the viewing glass 120 of the body member 122 in the region of the second recess 165,
The second fixing member 110
A receiving portion 205 for the first fixing member 105 corresponding to the first supporting member 180 of the first fixing member 105, and
A first and a second holding member (210) for securing a form fit coupling to the body member (122). 2. A fixing system according to claim 1, wherein the second fixing member (110) is installed such that the first fixing member (105) presses the viewing glass (120) in the axial direction. 3. The cylindrical end section of claim 2, wherein the first securing member 105 is radially expanded under axial compression, such that the penetrating portion 150 of the viewing glass 102 and the wiper drive 115. Fixing system, characterized in that installed to be pressed to (135). The method of claim 1, wherein the first support member 180 comprises three cylindrical sections 105.1, 105.2, 105.3 adjacent to one another in the axial direction, and the intermediate section 105.2 is And an outer diameter corresponding to an inner diameter of the receiving portion (205) of the second fixing member (110), wherein the outer sections (105.1, 105.3) have a larger outer diameter. The method according to any one of claims 1 to 4, wherein the second support member 185 comprises three cylindrical sections 105.5, 105.6, 105.7 adjacent each other in the axial direction, and the intermediate section 105.6 is And an outer diameter corresponding to an inner diameter of the penetrating portion (150) of the viewing glass (120), wherein the outer sections (105.5, 105.7) have a larger outer diameter. The method of claim 4 and 5, wherein the first support member 180 and the second support member 185 are separated from each other by a cylindrical section 150.4, the cylindrical section is the support members 180, Fixing system, characterized in that it has an outer diameter less than the outer diameter of each of the outer sections (105.1, 105.3, 105.5, 105.7) of (185). The method according to any one of claims 1 to 6, wherein the first fastening member 105 comprises sealing lips 170 in contact with the drive shaft 103, two axially spaced, so Fixing system, characterized in that a chamber (175) is formed between the sealing lips (170) for receiving oil. 8. The cylindrical end section 135 of the wiper drive 115 according to claim 1, wherein the first fixing member 105 is in the region of the first recess 155. And a sealing lip (160) supported by the annular groove (140). 9. The fastening according to claim 1, wherein the second fastening member 110 comprises a recess 225 for receiving the torque arm of the wiper drive 115. system. 10. A method 400 for mounting a wiper drive 115 to a body member 122 having a viewing glass 120 by means of a fixing system 100 according to claim 1.
The insertion 405 of the first fixing member 105 into the through part 150 of the viewing glass 120 such that the second support member 185 contacts the through part 150 of the viewing glass 120. step,
The second fixing member 110 to the first fixing member 105 such that the first supporting member 180 of the first fixing member 105 contacts the receiving portion 205 of the second fixing member 110. Step 105),
Inserting 415 the cylindrical end section 135 of the wiper drive 115 and the drive shaft 130 into the recesses 155, 165 of the first fixing member 105, and
Mounting (420) of the holding member (210) of the second fixing member (110) to the body member (122).

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