KR102483997B1 - The method for applying primer on the holder of rear detection sensor - Google Patents

Abstract

The present invention relates to a method for processing an adhesive surface of a sensor holder. The method for processing an adhesive surface of a sensor holder, according to the present invention, comprises: a preparation step; a setting step; a masking step; and an application step. According to the present invention, productivity is greatly improved because a primer can be simultaneously applied to an adhesive surface after a plurality of rear sensor holders are mounted on a jig.

Description

Method for processing the adhesive surface of the sensor holder {The method for applying primer on the holder of rear detection sensor}

The present invention relates to a method of treating an adhesive surface on which double-sided tape is attached, and more particularly, to attach a rear sensor holder for assembling, accommodating, and supporting a rear sensor of a vehicle to a rear bumper formed on both sides of the holder. A method of treating an adhesive surface of a sensor holder with a primer so that a double-sided tape can be effectively adhered to the adhesive surface.

Recently, vehicles are equipped with various advanced electronic equipment or devices for driver's convenience and safety, and to prevent accidents.

Among them, a rear detection sensor, which is an ultrasonic sensor for detecting an object in the rear, is embedded in the rear bumper of the vehicle.

At this time, in order to mount the rear sensor, the rear sensor holder may be used and attached to the inner surface of the rear bumper.

These general rear detection sensor holders have various shapes and structures as known in the patent documents below.

Referring to the known content, when mounting or installing most of the conventional rear detection sensor holders on bumpers, they are mounted using a fastening method, a fitting method, or a hanging method.

However, recently, as shown in FIG. 1, a method in which double-sided tape is supplied in an adhered state to an adhesive girder formed on a rear sensor holder and directly adhered to the inner surface of the bumper is preferred. This method is very simple.

1 is a perspective view showing a general rear detection sensor holder.

Briefly, the rear detection sensor holder has a hollow sensor housing 10 so that a cylindrical ultrasonic sensor can be fitted and accommodated, and protrudes outward from the upper end of the sensor housing 10 and adheres to the outer surface of the rear bumper. It may include a flange 20 and an adhesive girder 30 extending to both sides of the upper end of the sensor housing 10 and having an adhesive surface 31 capable of adhering double-sided tape to the upper surface.

A fitting hole 11 for assembling and fixing an ultrasonic sensor may be formed on the side of the sensor housing 10, and a connecting groove 12 having a partially cut-out shape to connect cables or wires is formed. It can be. And, the sensing part of the ultrasonic sensor is exposed to the outside through the exposure hole 21 of the flange 20.

However, when attaching the double-sided tape to the adhesive girder 30, a primer is applied to the adhesive surface in advance so that the double-sided tape can be well adhered.

All of these operations have been performed manually in the past. In other words, it was a method in which the worker held the holder one by one and applied the primer to the adhesive surface with a brush and dried it.

As a result, a lot of time and manpower was consumed and productivity decreased.

In addition, in the process of applying with a brush by an unskilled person, there was a problem in that the defect rate increased because the area other than the adhesive surface was applied.

Republic of Korea Patent Publication No. 10-2006-0000159 (2006.1.6.) "Sensor mounting structure for rear warning of vehicle" Republic of Korea Patent Publication No. 10-2006-0110040 (2006.10.24.) "Assembly structure of rear detection sensor unit of vehicle" Korean Registered Patent No. 10-0726496 (June 1, 2007) "Mounting structure of a non-protruding rear warning sensor unit in a vehicle" Republic of Korea Utility Model Registration 20-0361612 (2004.9.1.) "Sensor case for rear detection of vehicles"

Therefore, the present invention was developed to solve the above-mentioned conventional problems, and an object of the present invention is to provide a method for processing the adhesive surface of a sensor holder with increased productivity by using a jig to apply a primer to the adhesive girder of a rear detection sensor holder. is to do

Another object of the present invention is to provide a method for treating the adhesive surface of a sensor holder that can be easily applied only to the adhesive surface, thereby significantly lowering the defect rate.

In order to achieve the above object, a method for treating the adhesive surface of a sensor holder according to the present invention includes a sensor housing having a hollow shape so that an ultrasonic sensor can be inserted and accommodated therein, and an ultrasonic sensor protruding outward from the top of the sensor housing and an ultrasonic sensor in the center. An adhesive girder of a rear detection sensor holder composed of a flange having an exposure hole exposed therein and being in close contact with the outer surface of the bumper, and an adhesive girder extending from the sensor housing to both sides at the lower side of the flange and capable of bonding double-sided tape to the upper surface. In the method of applying a primer to the adhesive surface formed on, the rear detection sensor holders are respectively mounted on one or more storage pallets having seating parts formed on both sides and a bridge part connecting the seating parts in the center, wherein the bonding girder is A preparation step of placing the sensor housing on the mounting portion and mounting the sensor housing on the bridge portion; Consisting of mounting blocks formed in a '┏' shape on both sides and arranged so that a plurality of them face each other, centering blocks arranged between the mounting blocks, and support blocks fixed to the outside of the centering blocks located on both sides of the centering blocks. A setting step of picking up the rear detection sensor holder from the storage pallet on a jig, mounting the adhesive girder on the mounting block, and custom inserting the sensor housing into the centering block; Covering the flange with a masking cover composed of a covering plate made of a rectangular flat plate shape and fitting protrusions vertically coupled to both ends of the covering plate and covering the adhesive surface so as to be exposed, the fitting protrusion formed on the support block Masking step to be inserted into the groove; It may be made including; a coating step of applying a primer to the adhesive surface.

and a drying step of removing the masking cover, taking out the rear detection sensor holder from the jig, and drying it after the applying step; and a tape adhering step of adhering and pressurizing the other side of the double-sided tape to which the release film is adhered to one side to the adhesive side.

According to the present invention described above, there are the following effects.

First, productivity is greatly improved because the primer can be applied to the adhesive surface at the same time after mounting a plurality of rear sensor holders on a jig compared to the conventional operator applying the primer individually.

Second, since it can be applied only to the adhesive surface using a masking cover, the defect rate is significantly lowered.

1 is a perspective view showing the shape of a general rear detection sensor holder
2 is a flow chart showing a method for treating an adhesive surface of a sensor holder according to an embodiment of the present invention.
Figure 3 is a perspective view showing a storage pallet used in the preparation step of the present invention
4 is a perspective view showing a state in which the present invention is placed and stored in the storage pallet of FIG. 3
Figure 5 is a perspective view showing a jig used in performing the setting step of the present invention
Figure 6 is a perspective view showing a masking cover used when performing the masking step of the present invention
Figure 7 is a side view showing the application step of the present invention

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

For reference, the description with reference to the drawings is for easier understanding of the present invention, and the scope of the present invention is not limited thereto. And, in describing the present invention, if it is determined that a detailed description of related known technologies may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

2 is a flowchart illustrating a method of treating an adhesive surface of a sensor holder according to an embodiment of the present invention.

The present invention relates to a method of applying and treating a primer on an adhesive surface before attaching a double-sided tape to an adhesive girder formed on a holder so that a rear sensor holder can be attached to a rear bumper of a vehicle using double-sided tape. Step, setting step, masking step, coating step, may be carried out by proceeding in order of the drying step.

First, the rear sensor holder is as shown in FIG. 1, and the shape, structure, and function are as described above in the background technology of the present invention.

First, the preparation step will be described with reference to FIGS. 3 and 4 together. 3 is a perspective view showing a storage pallet used in performing the preparation step of the present invention, and FIG. 4 is a perspective view showing a state in which the present invention is placed and stored on the storage pallet of FIG. 3 .

The preparation step is a step of supplying a product for primer application by arranging and receiving a plurality of rear detection sensor holders horizontally and vertically at regular intervals.

To this end, the storage pallet 100 composed of the seating portion 110 and the bridge portion 120 may be used.

The storage pallet 100 is formed in a block shape of a long rectangular parallelepiped, and the seating parts 110 are formed on both sides. Also, an accommodation groove 130 is formed between the seating parts 110, and a bridge part 120 connecting the seating parts 110 to each other is formed inside the accommodation groove 130.

Steps 140 are formed at the inner edges of the seating portion 110 so that the adhesive girders 30 can be seated thereon.

Therefore, in order to accommodate and mount the rear detection sensor holder in the storage pallet 100, the bridge part 120 is inserted into the connecting groove 12 of the sensor housing 10 so as to be inserted, and the adhesive girder 30 Can be mounted by being in close contact with the seating portion 110, respectively.

Preferably, a plurality of the storage pallets 100 are provided, and as shown in the figure, they are arranged and fixed at regular intervals left and right on a separate base 150 to prepare a large amount of primer coating for the rear detection sensor holder.

For reference, since the bonding girders 30 may be formed to have different heights, it is preferable that the heights of the seating parts 110 are also formed to be different correspondingly.

Additionally, while the rear detection sensor holder is accommodated in the storage pallet 100, foreign substances or residues may be wiped off the adhesive surface 31 with alcohol.

Next, the setting step will be described with reference to FIG. 5 . 5 is a perspective view showing a jig used in performing the setting step of the present invention.

The setting step is a step of transferring the rear detection sensor holder prepared in the preparation step and setting it on the jig 200 to perform primer application.

To this end, the jig 200 includes a plurality of mounting blocks 210 arranged in a line on both sides so as to face each other, centering blocks 220 provided between the mounting blocks 210, and the centering blocks 210, as shown. It may be implemented as a support block 230 fixed to both ends of the block 220.

The mounting block 210 has a horizontal mounting portion 211 formed on the upper side so that the adhesive girder 30 is mounted, and a vertical portion 212 vertically coupled to the rear end of the mounting portion 211 and the vertical portion 212. It consists of a fixing part 213 formed horizontally at the lower end of the part 212 and fixed to the floor, and may have a shape of approximately '┏'.

Here, the mounting blocks 210 may be provided with different heights from those arranged on one side and those arranged on the opposite side. As described above, when the heights of the bonding girders are different, they can be customized and mounted accordingly.

In addition, the centering block 220 includes an inclined plate 221 fixed to the floor and inclined, a lower plate 222 fixed to the upper surface of the inclined plate 221, and a centering body 223 formed on the upper surface of the lower plate. ) can be configured.

The centering body 223 has a corresponding structure so that the connecting groove 12 of the sensor housing 10 can be fitted and inserted, and the inclined plate 221 has an inclined upper surface and is mounted on a rear detection sensor holder. can respond to the degree of inclination of

That is, when the bonding girder 30 is not horizontal and has various inclinations, the inclined plate 221 can be mounted in response to the various inclinations of the bonding girder 30 by replacing and mounting the inclined plate 221 with another one having a different inclination.

In addition, a pair of the support blocks 230 are provided and fixed to the outside of the centering blocks 220 arranged in a line, respectively.

The support block 230 is configured to support the masking cover 300 to be described later at both ends, and has fitting grooves 231 formed on the rear surface. The fitting groove 231 is formed in a corresponding shape so that the fitting protrusions 320 provided at both ends of the masking cover 300 are fitted and inserted, as shown, 'V' shape or 'Y' or 'U' can be a shape.

Therefore, each rear detection sensor holder is picked up and transported from the storage pallet 100 and placed on the jig 200, but the adhesive girders 30 are respectively placed on the holding parts 211, and the connecting grooves Setting is made by allowing the centering block 220 to be retracted in (12).

At this time, the work of picking up and transferring the holder of the rear sensor may be performed directly by a person or may be transferred using a known automated facility (not shown) capable of clamping or gripping the holder.

Next, the masking step will be described with reference to FIG. 6 . Figure 6 is a perspective view showing a masking cover used when performing the masking step of the present invention.

The masking step is a step of masking all remaining parts except for the adhesive surface 31 of the rear detection sensor holder mounted on the jig 200 in the setting step.

To this end, a masking cover 300 as shown may be used.

The masking cover 300 may be composed of a cover plate 310 having a long rectangular flat shape and fitting protrusions 320 vertically coupled to both ends of the cover plate 310 .

Here, the width of the cover plate 310 corresponds to the length between the facing portions 211 or is formed to a length corresponding to the length between the bonding girders 30 to completely cover the flange 20. should be able to cover

In addition, it is preferable that a downwardly bent blocking piece 311 is formed on an edge of the cover plate 310 .

In addition, the fitting protrusion 320 may be formed in a 'V', 'Y', or 'U' shape corresponding to being fitted into the fitting groove 231 as described above.

Therefore, while inserting the fitting protrusions 320 of the masking cover 300 into the fitting grooves 231, respectively, when the covering plate 310 is placed so as to cover the flange 20, only the adhesive surfaces 31 Exposed.

At this time, the blocking piece 311 is inserted between the adhesive surface 31 and the flange 20 to block the primer from flowing into the flange 20 when the adhesive surface 31 is applied.

Next, the application step, the drying step, and the tape bonding step will be described with reference to FIG. 7 together. 7 is a side view showing the application step of the present invention.

The applying step is a step of applying a primer to the adhesive surface 31 exposed in the masking step.

A primer is also called an adhesion promoter, and is a material for increasing tape adhesion by modifying the surface.

In the present invention, 4298UV, K520K, and 94 primers manufactured by 3M may be used.

In the method of applying the primer, a worker may directly apply the primer to the adhesive surface with a brush or a brush. That is, after the adhesive surfaces 31 arranged in a line on one side are applied at once, the adhesive surfaces 31 arranged on the other side may also be applied at once. Therefore, the application process can be performed much more quickly than previously applied individually one by one.

And, although not shown, it is natural that the liquid may be simultaneously applied to the adhesive surface 31 using an automated equipment (not shown) for applying liquid.

Next, the drying step is a step in which the masking cover 300 is removed from the jig 200 after the primer application is completed, and the rear detection sensor holders are taken out and naturally dried.

If the drying time is about 10 to 30 minutes, drying is quickly completed in the air and becomes a coated state.

Next, the tape bonding step is a step of adhering the double-sided tape to the adhesive surface 31 to which the primer is applied.

The double-sided tape is supplied with a release film attached to both sides, the release film on either side is removed, and the side of the double-sided tape from which the release film is removed is adhered to the adhesive side.

Double-sided tape can be individually attached to each adhesive surface 31, but preferably, a plurality of rear detection sensor holders are clamped in a separate mold (not shown), and the adhesive surface coated with the primer is exposed and then released Tape adhesion may be performed simultaneously by putting the other side of a plurality of double-sided tapes having a film adhered to one side thereof in pairs so as to correspond to the adhesive side, and pressing the double-sided tape with a pressure press (not shown).

In addition, when the release film is cut, an individual rear sensor holder product with double-sided tape attached is completed.

Representative embodiments of the present invention have been described above with reference to the drawings, but those skilled in the art will be able to make various applications and modifications within the scope of the present invention based on the above information. Therefore, the scope of the present invention should not be limited to the described embodiments and should not be defined, but should be defined by not only the claims to be described later, but also those equivalent to these claims.

10: sensor housing
11: fitting hole 12: connecting groove
20: flange 21: exposed hole
30: adhesive girder 31: adhesive surface
100: storage pallet 110: seating part
120: bridge part 130: storage groove
140: step 150: base
200: jig
210: mounting block 211: mounting unit
212: vertical part 213: fixed part
220: centering block 221: inclined plate
222: lower plate 223: centering body
230: support block 231: fitting groove
300: masking cover 310: cover plate
311: blocking piece 320: fitting protrusion
P: Primer B: Brush

Claims (3)

A sensor housing forming a hollow shape so that an ultrasonic sensor can be inserted and accommodated, a flange protruding outward from an upper end of the sensor housing and an exposure hole through which the ultrasonic sensor is exposed is formed in the center to be in close contact with the outer surface of the bumper, and the lower side of the flange In the method of applying a primer to the adhesive surface formed on the adhesive girder of the rear sensor holder made of an adhesive girder extending from the sensor housing on both sides and capable of adhering double-sided tape to the upper surface,
Each of the rear detection sensor holders is mounted on one or more storage pallets having seating parts formed on both sides and a bridge part connecting the seating parts at the center thereof, the adhesive girders are seated on the seating parts, and the sensor housings are placed on the bridge parts. preparation stage to mount;
Consisting of mounting blocks formed in a '┏' shape on both sides and arranged so that a plurality of them face each other, centering blocks arranged between the mounting blocks, and support blocks fixed to the outside of the centering blocks located on both sides of the centering blocks. A setting step of picking up the rear detection sensor holder from the storage pallet on a jig, mounting the adhesive girder on the mounting block, and custom inserting the sensor housing into the centering block;
Covering the flange using a masking cover composed of a rectangular plate-shaped covering plate and fitting protrusions vertically coupled to both ends of the covering plate to expose the adhesive surface, the fitting protrusions are attached to the support block Masking step to be inserted into the formed fitting groove;
A method for treating the adhesive surface of a sensor holder comprising the steps of applying a primer to the adhesive surface. According to claim 1,
After the application step,
and a drying step of removing the masking cover, taking out the rear detection sensor holder from the jig, and drying it. According to claim 2,
After the drying step,
A method of treating the adhesive surface of a sensor holder, characterized in that it further comprises a tape bonding step of adhering and pressing the other surface of the double-sided tape to which the release film is adhered to the adhesive surface.

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