JPH0655873U - Electric wire seal structure - Google Patents

Abstract

(57) [Summary] [Purpose] The board 17 is stored in the board case.
The wire bundle 16 connected to this board is the opening 15c of the case.
The structure for sealing the portion that is pulled out through the case to the outside of the case is improved so that the seal 21 can be easily fitted into the opening 15c. [Structure] A lip 21a extending outward from the case is integrally formed with the seal 21. The lip 21a is provided with non-slip ridges 21b and 21c.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a structure for sealing and waterproofing a large number of electric wires inserted in an opening provided in a wall portion of a substrate case, such as a driving portion of a remote control type door mirror for an automobile.

[0002]

[Prior art]

4A and 4B show a conventional example of a drive unit of a remote control type door mirror for an automobile, FIG. 4A is a partially cutaway front view, and FIG. 4B is a partially drawn side view. Reference numeral 1 denotes a housing, and housing A 1a and housing B 1b are joined together in a lid shape. Reference numerals 1c to 1f denote through holes for inserting mounting screws. No. 1) is inserted and attached, the housing 1a and the housing B 1b are closely fixed to each other. Have two motors M _1, M ₂ in the housing 1 is installed, the motor M ₁ of the previous forward and backward rod 3a through the reduction gear group 2 (see FIG. 4 (B)), the reverse Let A mirror body (not shown) is fixed to the mirror holder 4, and is supported so as to be tiltable with respect to the housing 1 via a ball joint 5. The advancing / retreating rod 3a is arranged on the vertical axis Y as shown in FIG. 7A, and the mirror holder 4 is tilted up and down as the advancing / retreating rod 3a moves forward and backward. Similarly, the motor M ₂ tilts the mirror holder 4 left and right by moving the advancing and retracting rod 3b arranged on the horizontal axis X forward and backward. The two motors M ₁ and M ₂ are individually operated in the forward and reverse directions via the electric wires 6a to 6d. Since the ground wires of the above two motors can be shared, these motors are connected to the 3-core connector 7 via the 3-core harness 6 and to the battery (not shown) via the operation switch (not shown). Connected. The connector 7 is fixed to a pivoting base (not shown) of the door mirror by a mounting screw (neither is shown) using a mounting bracket.

[0003]

The drive unit of the conventional door mirror device shown in FIG. 4 has a structure in which the _two motors M ₁ and M ₂ are individually forwarded and reversely rotated, so that the electric system is simple. However, with the recent technological progress, it has become possible to install electric heaters for anti-fog on door mirrors, ultrasonic vibration devices for removing raindrops, and non-contact sensors for detecting overtaking vehicles. This made the electrical system significantly more complicated. FIG. 5 is an external view of a door mirror drive mechanism according to an unknown prior art. A rotation base 11 is rotatably supported by a mirror base (not shown) fixed to the vehicle body. The rotary base 11 is equipped with the following devices. Reference numeral 12 denotes a drive unit that supports and tilts the mirror, and is a portion corresponding to the mechanism shown in FIG. 4 illustrating a conventional example. Reference numeral 13 is an ultrasonic droplet removing unit, and 14 is a drive unit of the electric storage mechanism. A control board for automatically or semi-automatically controlling the above-mentioned electric equipment is housed in a board case 15, and a large number (12 in this example) of a wire bundle 16 is drawn out. Reference numeral 17 denotes three connectors for connecting the electric wire bundle to an external circuit. FIG. 6 is an exploded cross-sectional view for explaining the configuration of the vicinity of the board case 15. The board case 15 is composed of a board case / lower part 15a and a board case / upper part 15b which are combined by a connecting screw 19a. , Are fastened to each other via spring washers 19c. Then, the board 17 is fixed to the board case / lower portion 15a by the mounting screws 19b. An electric wire bundle 16 composed of twelve electric wires is connected to the base plate 17, and one of the electric wires is inserted into each of the twelve through holes formed in a row in the seal 18 in a watertight manner. The seal 18 is fitted into the opening 15c of the case, as indicated by 18 'shown in phantom. However, it is extremely difficult to fit the seal 18 into the opening 15c. Next, the reason why this work is not easy will be described.

Suppose now that the board is at the position 17 'shown by the phantom line, the wire bundle 16' shown by the phantom line is connected, and the length dimension from the seal 18 to the board 17 'is L ₂ . If so, it is easy to apply a pressing force to the seal 18 with a fingertip as shown by an arrow P to fit the seal 18 into the opening 15c. However, since the board 17 must be attached to the board case / bottom 15a and covered by the board case / top 15b, the distance between the seal 18 and the board 17 must be shortened to the dimension L ₁ shown in the figure. I won't. If this dimension L ₁ is short, it is impossible to insert and press the fingertip as shown by the arrow P (when the seal 18 is fitted into the opening 15c like the phantom line 18 ', the substrate 17 is at the position shown by the phantom line). 17 ", and the fingertip does not come in even if the seal 18 'is pressed down as indicated by the arrow P'.) The present invention has been made in view of the above circumstances, and is in a narrow board case. It is an object of the present invention to provide a structure capable of easily and surely sealing a plurality of electric wires drawn from a wire.

[0005]

[Means for Solving the Problems]

 In order to achieve the above purpose (easy and reliable sealing of electric wires), the configuration of the seal structure according to the present invention is such that a board is installed in a board case and a plurality of boards connected to the board are connected. In the structure in which the electric wire is inserted into the opening of the substrate case and is drawn out of the case, the seal having the rubber-like elasticity is fitted in the opening, and the electric wire is watertightly penetrated through the seal. A lip extending outwardly from the substrate case is integrally connected to the seal, and the lip located outside the substrate case is pulled by pulling the lip from the outside of the substrate case. It is characterized in that it can be fitted to.

[0006]

[Action]

 According to the above configuration, unlike the arrow P shown in FIG. 6, even if the force in the direction of pushing out from the inside of the seal 18 is not applied, by pulling the lip from the outside of the substrate case, the arrow P can be drawn. The seal 18 can be fitted into the opening 15c by applying a pulling force that acts similarly.

[0007]

【Example】

FIG. 1 is a schematic sectional view showing an embodiment of the seal structure according to the present invention, with a part cut away. FIG. 2 is a view for showing details of the seal structure according to the above-mentioned embodiment, and is a cross-sectional view taken along the line AA shown in FIG. FIG. 3 is an explanatory diagram in which the essential parts of the above embodiment are extracted and drawn, and is a perspective view in a disassembled state. The present embodiment is an improvement by applying the present invention to an unknown prior art shown in FIG. 6, and the same reference numerals as those in FIG. 6 have the same or similar constitution as in the above prior art. It is a part. 1 to 3 will be described in comparison with FIG. 6, that is, matters improved by applying the present invention will be described. Reference numeral 21 denotes a seal in this embodiment, which is a component member corresponding to the seal 18 in the prior art of FIG. The seal 21 of this example is made of synthetic rubber, and the lips 21a are integrally connected. The lip 21a is configured to be able to project outward from the opening 15c. When this lip 21 is picked up with a fingertip and pulled in the direction of the arrow P ″ shown in FIG. 2, the seal 21 is fitted into the opening 15c without applying the pressing force of the arrows P and P ′ shown in FIG. The above-mentioned lip 21 is formed with non-slip ridges 21b and 21c for easy pulling, and as shown in Fig. 3, the width dimension W ₁ of the root portion of the lip 21a is The width of the seal 21 is set to be substantially equal to or slightly smaller than the width W _2. The reason is that W ₁ << W ₂ means that the body of the seal 21 is pulled when the lip 21 a is pulled. This is because the portion is bent and it is difficult to fit the opening 15c.

[0008]

[Effect of device]

 As described above, the board is installed in the board case, and the multiple wires connected to the board are inserted into the opening of the board case and pulled out of the case. When the present invention is applied to a structure in which a seal having the above is fitted and the electric wire penetrates the seal in a watertight manner, and the lip extending outwardly from the substrate case is integrally connected to the seal, By pulling the lip from the outside of the board case, the seal located in the board case can be fitted into the opening, so the assembly work is quick and the sealing performance is reliable. Is.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view showing an embodiment of a seal structure according to the present invention, with a part broken away.

FIG. 2 is a view for showing details of the seal structure according to the above embodiment and is a cross-sectional view taken along the line AA shown in FIG.

FIG. 3 is an explanatory diagram in which essential parts of the above-described embodiment are extracted and drawn, and is a perspective view in a disassembled state.

4A and 4B show a conventional example of a drive unit of a remote control type door mirror for an automobile, in which FIG. 4A is a partially cutaway front view and FIG. 4B is a partially broken side view. .

FIG. 5 is an external view of a drive unit of a remote control type door mirror for a vehicle according to an unknown prior art.

FIG. 6 is an exploded cross-sectional view of a substrate case for explaining the problem in the above-mentioned unknown prior art.

[Explanation of symbols]

1 ... Housing, 1a ... Housing instep, 1b ... Housing B, 1c-1f ... Through hole, 2 ... Reduction gear group, 3
a, 3b ... Advancement / retraction rod, 4 ... Mirror holder, 5 ... Ball joint, 6
... Harness, 7 ... 3-core connector, 11 ... Rotation base,
12 ... Drive unit, 13 ... Ultrasonic dropper unit, 14
... Electric storage drive section, 15 ... Board case, 15a ... Board case / bottom, 15b ... Board case / top, 15c ... Opening, 1
6 ... Wire bundle, 16 '... Wire bundle of virtual length, 17 ... Board, 17' ... Board at virtual position, 17 "... Position of board in assembled state, 18 ... Seal, 18 '... Case Seals at positions fitted into the openings of 19a ... coupling screws, 19b ... mounting screws, 19c ... spring washers, 21 ... seals, 21a ... lips, 21b, 21c ... non-slip ridges,
P, P '... Arrow indicating the pressing force for fitting the seal,
L ₁ ... actual distance dimension between the seal and the substrate, L ₂ ... virtual distance dimension for explaining the problem, W ₁ ... width dimension of the root portion of the lip provided on the seal, W ₂ ... Width dimension.

Claims (1)

[Scope of utility model registration request] 1. A substrate is installed in a substrate case,
A plurality of electric wires connected to the above-mentioned board are inserted into the opening of the board case and pulled out of the case, and a seal having rubber-like elasticity is fitted to the above-mentioned opening, and the above-mentioned electric wire is attached to the above-mentioned seal. In the structure that penetrates in a watertight manner, the seal is integrally provided with a lip extending to the outside of the substrate case, and the lip is pulled from the outside of the substrate case to be positioned inside the outer substrate case. A seal structure for an electric wire, characterized in that a seal that is fitted can be fitted into the opening.