KR100874143B1 - Pre-heater mounted with cover for vehicle - Google Patents

Abstract

A cover-coupling preheater for a vehicle is provided to minimize the generation of whistling noise by coupling an upper cover and a lower cover with each other solidly without bolt holes. A cover(700) is formed of an upper cover(710) and a lower cover(720) coupled with each other overlappingly. The upper cover is formed with a first close fitting hole(711). The lower cover has a first close coupling piece(721) fixed in the first close fitting hole, and a first extension insertion rod(722) to be inserted into the center of the first close coupling piece for making the first close coupling piece in close contact with an inner surface of the first close fitting hole. An extension part(721a) of the first extension insertion rod is captured by a holding shoulder of the first close fitting hole for preventing deviation.

Description

Cover-mounted car preheater {PRE-HEATER MOUNTED WITH COVER FOR VEHICLE}

The present invention relates to a cover-mounted vehicle preheater, and more particularly, to a cover-mounted vehicle preheater which reduces noise (noise) and has an economical and robust assembly structure.

In a typical vehicle, a heating apparatus is installed that uses heat energy of cooling water heated by heat generated by an engine for heating indoors, dehumidifying or defrosting the windshield of the vehicle.

Such a heating apparatus has a long time until the cooling water is heated and the room is heated because the cooling water flowing around the engine flows into the heater after the engine is operated. Accordingly, there has been a disadvantage in that the cold state for a certain time after starting.

Recently, various types of preheaters have been developed to solve such problems, and a typical example is a preheater incorporating a PTC device.

Also, in recent years, cover-coupled preheaters have been developed in which an upper cover and a lower cover are coupled in a vertical direction and a PTC element (not shown) is embedded therebetween.

However, in this case, since the coupling between the upper cover and the lower cover is made by bolts, the bolt holes are always exposed on the surface of the cover. Accordingly, when the air is blown through the preheater, the bolt holes are closed. Whistle noise was generated.

In addition, since the bolts had to be fastened one by one in the state where the upper cover and the lower cover were overlapped, it took a lot of assembly time and was troublesome.

In addition, conventionally, the coupling between the connection housing and the cover is also made of bolts, which causes noise to become larger.

In addition, in the related art, the durability of the bolt is degraded, and the corrosion part may contact the terminal part to generate an electrical short.

Meanwhile, instead of using a bolt, a method of forming hook pairs around a cover is also disclosed. However, in this case, hook holes are formed to engage the hooks, and whistle noise is still not avoided. Due to its characteristics, the assembly strength of the cover was very weak.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a cover-mounted vehicle-free vehicle, in which a combination of an upper cover and a lower cover, or a combination of a cover and a connection housing is specified so as to minimize noise caused by blowing. To provide a heater.

In addition, an object of the present invention is to provide a cover-mounted vehicle preheater with high productivity, which is economical and easy to assemble.

It is also an object of the present invention to provide a cover-mounted vehicle preheater that can prevent durability degradation and electrical short due to corrosion.

In order to achieve the above object, the cover-mounted vehicle preheater according to the present invention,

(+) And (-) terminals extending in the longitudinal direction, the heat fin assembly interposed between the (+) and (-) terminals, and one side is electrically connected to the (+) terminal and the other side A PTC element in contact with the heat fin assembly electrically connected to the (-) terminal, a cover accommodating the (+) terminal, the (-) terminal, the heat fin assembly and the PTC element together with a vent hole formed on the surface thereof; As comprising a connection housing coupled to the end of the cover,

The cover is composed of an upper cover and a lower cover coupled to overlap each other, one of the upper cover and the lower cover is formed with a first close contact hole, the other side is assembled to the inner surface of the first close contact hole A first close engagement piece to be brought into close contact with each other, and a first extension inserting rod inserted into the center of the first close contact piece to tightly couple the first close contact piece to the inner surface of the first close contact hole; It is done.

In this case, it is preferable that an extension part is formed at the tip of the first close contact piece, and a locking step is formed at a portion where the extension part is seated in the first close contact hole.

Furthermore, it is desirable to ensure that the extension is firmly embedded in the locking jaw during assembly.

The first close contact hole, the first close contact piece, and the first extended insertion rod are preferably formed between the ventilation hole and the edge formed in the upper cover and the lower cover, respectively.

On the other hand, the front end of the cover is formed with a second close fitting hole, the connection housing is assembled with the second close contact piece to be in close contact with the inner surface of the second close contact hole when assembled, and in the center of the second close contact piece And a second expansion insertion rod which is inserted and adheres to the inner surface of the second close contact hole.

In addition, an extension part is formed at a tip end of the second close contact piece, and a locking step is formed at a portion where the extension part is seated in the second close contact hole.

In addition, the second close contact hole is characterized in that formed on the boundary between the upper cover and the lower cover.

In addition, the connecting housing is formed to protrude to the rear guide projections, characterized in that the front end of the cover is fitted.

On the other hand, as another structure of the cover-mounted vehicle preheater according to the present invention,

(+) And (-) terminals extending in the longitudinal direction, the heat fin assembly interposed between the (+) and (-) terminals, and one side is electrically connected to the (+) terminal and the other side A PTC element in contact with the heat fin assembly electrically connected to the (-) terminal, a cover accommodating the (+) terminal, the (-) terminal, the heat fin assembly and the PTC element together with a vent hole formed on the surface thereof; In the cover-mounted vehicle preheater comprising a connection housing coupled to the end of the cover,

The cover is composed of an upper cover and a lower cover coupled to overlap each other, the upper cover and the lower cover is formed with a plurality of clip coupling grooves in the circumferential direction, characterized in that the clip is fitted into the clip coupling groove .

In this case, the clip is made of '' 'channel type, the clip coupling groove is characterized in that formed in a shape corresponding to the clip.

In addition, the thickness of the clip and the depth of the clip coupling groove is characterized in that the same.

In addition, the connecting housing is formed to protrude to the rear guide projections, characterized in that the front end of the cover is fitted.

In addition, a second close fitting hole is formed at the front end of the cover, and the connecting housing has a second close fitting piece that is brought into close contact with the inner surface of the second close fitting hole and is assembled at the center of the second close fitting piece. And a second expansion insertion rod which is inserted and adheres to the inner surface of the second close contact hole.

According to the present invention having the above-described configuration, whilst the upper cover and the lower cover are firmly coupled to each other and the bolt holes are omitted, whistle noise due to the blowing does not occur.

In addition, according to the present invention, the assembly process is greatly simplified because productivity is improved by simply combining the upper cover and the lower cover by striking the expansion insertion rod or by inserting a clip.

In addition, according to the present invention, the guide protrusion is formed in the connection housing, thereby preventing the cover from lifting.

In addition, according to the present invention, by connecting the front end of the connection housing and the cover by the close coupling piece, the connection housing can be firmly coupled, noise can be reduced, and the assembly process can be greatly simplified.

In addition, according to the present invention, there is no corrosion phenomenon and there is no degradation in durability or an electrical short phenomenon.

In addition, according to the present invention, since the expansion rod is used, the coupling of the cover is higher than that of the conventional hook coupling.

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

Example 1

1 to 5 show the configuration of the cover-mounted vehicle preheater according to the present embodiment.

As shown in Figure 1 and 2, the cover-mounted vehicle preheater 1000 according to the present invention, the (+) terminal 130 and (-) terminal 300 extending in the longitudinal direction, and ( The heat fin assembly 200 and the PTC element 140 interposed between the terminal 130 and the (-) terminal 300 and the ventilation holes 750 are formed on the surface of the heat fin assembly 200 and the PTC element 140. The cover 700 and the connection housing 400 coupled to the end of the cover 700 is composed of.

First, the PTC element 140 is formed in a quadrangular plate shape, one surface of which is in contact with the (+) terminal 130 and the other surface of which is connected to the (-) terminal 300. In contact with the pin assembly 200. Here, the PTC element 140 may have various shapes such as an ellipse or other polygons.

Accordingly, the heat fin assembly 200 and the PTC device 140 are continuously interposed between the (+) terminal 130 and the (-) terminal 300 as a whole, or only the heat pin assembly 200 is interposed. Can be.

On the other hand, the cover 700 is configured such that the upper cover 710 and the lower cover 720 overlap each other and are coupled.

In particular, the first cover fitting hole 711 is formed in the upper cover 710, the first cover is in close contact with the inner surface of the first fitting fitting hole 711 is fixed and coupled to the lower cover 720 when assembled A first expansion insertion inserted into the coupling piece 721 and the center of the first close coupling piece 721 to close the first close coupling piece 721 to the inner surface of the first close fitting hole 711. The rod 722 is formed.

As shown in FIGS. 3 and 4, the first tightly coupled piece 721 is divided into two or more parts by being divided along the circumferential direction with respect to the first expansion insertion rod 722.

In addition, the first expansion insertion rod 722, the first close contact piece 721 and the first close contact hole 711 of the upper cover 710 is very tightly adhered unless a large external force is applied. Do not separate by yourself.

In addition, an extended portion 721a having a somewhat larger cross-sectional area than the lower portion is formed at the front end of the first tightly coupled piece 721, and the portion where the expanded portion 721a is seated in the first close contact hole 711. The locking jaw 711a is formed. Accordingly, when the first close coupling piece 721 is opened by the first expansion insertion rod 722 during assembly, the expansion part 721a is securely caught by the locking step 711a so as not to be pulled out.

Further, when the relative size is adjusted so that the expansion portion 721a is firmly embedded in the locking step 711a, the structure can be free from shaking.

As shown in FIGS. 1 and 2, the first close contact hole 711, the first close contact piece 721, and the first expansion insertion rod 722 may include an upper cover 710 and a lower cover 720. It is formed between the ventilation hole 750 and the edge formed in each. However, if the (+) terminal 130, the (-) terminal 300, the heat fin assembly 200 and the PTC element 140 can be appropriately arranged without dense, it may be installed inside the cover 700 have.

In addition, four first contact pieces 721 are provided on both sides of the cover 700 and two at the rear ends, and a total of ten pieces are arranged. However, the number of first contact pieces 721 is not particularly limited.

In addition, although the first close contact hole is formed in the upper cover 710 and the first close contact piece and the first expansion insertion rod are formed in the lower cover 720 in the drawing, the formed portions may be disposed oppositely.

On the other hand, as shown in Figure 5, the front end of the cover 700 is formed with a second close contact hole 740, the connection housing 400, the side of the second close contact hole 740 during assembly The second close coupling piece 410 is brought into close contact with the second and the second expansion insertion rod 420 is inserted into the center of the second close coupling piece 410 is passed through.

Similar to the first close contact piece 721 described above, an extension part 411 is formed at the tip of the second close contact piece 410, and the extension part (270) is formed at the second close contact hole 740. A locking jaw 741 is formed at a portion at which the 411 is seated. Accordingly, when the second close coupling piece 410 is opened by the second expansion insertion rod 420 at the time of assembly, the expansion part 411 is securely caught by the locking jaw 741 and does not fall out.

In addition, the second contact hole 740 may be formed on the boundary between the upper cover 710 and the lower cover 720 to provide a bonding force to both the upper cover 710 and the lower cover 720.

In addition, the connecting housing 400 is formed so that the guide protrusion 450 protrudes toward the rear side so that the front end of the cover 700 is fitted into the inside. Accordingly, the upper cover 710 and the lower cover 720 can be more easily prevented from being separated from the connection housing 400.

Hereinafter, a method of assembling the upper cover and the lower cover in accordance with the above-described configuration is schematically described.

As shown in FIG. 4, before assembly, the first expansion insertion rod 722 is formed at the upper side and the first close coupling piece 721 is protruded at the bottom with respect to the lower cover 720.

In this case, the first tightly coupled piece 721 has a configuration in which two or more pieces are split along the circumferential direction, and the first expansion insertion rod 722 passes through the center between the pieces. do.

Specifically, when the first expansion insertion rod 722 formed on the opposite side of the first close coupling piece 721 using a blow or pressure during assembly, the first expansion insertion rod 722 is the first close coupling. The first close coupling piece 721 is pushed outward while passing through the center of the piece 721. That is, since the cross-sectional area of the first expansion insertion rod 722 is wider than the passage formed by the first close contact piece 721 divided into several branches, the first close contact piece 721 may be pushed outward in the radial direction. It is.

Since the first close contact piece 721 is pushed out in the state of being fitted into the first close contact hole 711 of the upper cover 710, the first expansion insertion rod 722 and the first close contact piece 721. ) And the first close fitting hole 711 is firmly coupled to each other.

In addition, the first close contact hole 711 is maintained in a completely sealed configuration by such a combination.

Example  2

6 and 7 illustrate the structure of the cover-mounted vehicle preheater according to the present embodiment. Duplicate description of the same configuration as that of the first embodiment will be omitted, and only the configurations with differences will be described.

6 and 7, the cover 700 is composed of an upper cover 710 and a lower cover 720 coupled to each other by overlapping, and the upper cover 710 and the lower cover 720 have a periphery. A plurality of clip coupling grooves 770 are formed along the direction, and the clip coupling grooves 770 have a configuration in which a clip 900 is fitted.

The clip 900 has a '-' channel having a predetermined width, and the clip coupling groove 770 has a shape in which the clip 900 is fitted in close contact. That is, the clip coupling groove 770 has the same width as the clip 900, and the surface of the clip 900 forms the same surface as the surface of the cover 700, there is no relatively protruding portion.

For this configuration, the thickness of the clip 900 and the depth of the clip coupling groove 770 is the same.

Four clips 900 are provided at both sides and two at the rear end, so that the clip 900 has a total of 10, but the number of clips 900 is not particularly limited.

In addition, as in the first embodiment, it is also possible to couple the second close coupling piece 410 between the front end of the cover 700 and the connection housing 400.

By such a combination, the bolt hole can be omitted in the cover 700, so that noise during blowing can be reduced.

1 is a perspective view showing the structure of a cover-mounted vehicle preheater according to Embodiment 1 of the present invention.

2 is an exploded perspective view of FIG. 1.

FIG. 3 is a cross-sectional view illustrating a coupling structure between the first extension insertion rod, the close contact piece, and the first close contact hole in FIG. 1.

Figure 4 is a pre-assembly of the first expansion insertion rod and the close coupling piece in Figure 3, (a) is a perspective view, (b) is a cross-sectional view.

5 is an exploded perspective view illustrating a coupling structure of a housing and a cover of FIG. 1.

Figure 6 is a perspective view showing the structure of a cover-mounted vehicle preheater according to a second embodiment of the present invention.

7 is an exploded perspective view of FIG. 6.

<Description of Major Components>

200 ... heat fin assembly

300 ... (-) terminal

400 ... connection housing

410.2nd close contact piece

420 ... 2nd extension rod

700 ... cover

710 ... top cover

711. The first close contact hole

720 ... lower cover

721.First tight coupling piece

722 ... first extension rod

750 ... vent hole

770 ... clip mating groove

900 ... clip

1000 ... Pre-heater with cover

Claims (13)

(+) And (-) terminals extending in the longitudinal direction, the heat fin assembly interposed between the (+) and (-) terminals, and one side is electrically connected to the (+) terminal and the other side A PTC element in contact with the heat fin assembly electrically connected to the (-) terminal, a cover accommodating the (+) terminal, the (-) terminal, the heat fin assembly and the PTC element together with a vent hole formed on the surface thereof; In the cover-mounted vehicle preheater comprising a connection housing coupled to the end of the cover, The cover is composed of an upper cover and a lower cover coupled to overlap each other, one of the upper cover and the lower cover is formed with a first close contact hole, the other side is assembled to the inner surface of the first close contact hole A first close engagement piece to be brought into close contact with each other, and a first extension inserting rod inserted into the center of the first close contact piece to tightly couple the first close contact piece to the inner surface of the first close contact hole; Cover-mounted vehicle preheater. The method of claim 1, An extension part is formed at a front end of the first close contact piece, and a locking jaw is formed at a portion where the extension part is seated in the first close contact hole. The method of claim 2, Cover extension type vehicle pre-heater, characterized in that when the expansion is firmly stuck to the locking jaw. The method of claim 2, And the first close contact hole, the first close contact piece, and the first extended insertion rod are formed between a ventilation hole and a rim formed in the upper cover and the lower cover, respectively. The method according to any one of claims 1 to 4, A second close fitting hole is formed at the front end of the cover, and the connecting housing is inserted into a second close fitting piece that is brought into close contact with the inner surface of the second close fitting hole when assembled, and is inserted into the center of the second close fitting piece. A cover-mounted vehicle preheater, wherein a second expansion insertion rod is formed to closely contact the second close contact piece to the inner side surface of the second close contact hole. The method of claim 5, An extension part is formed at a tip end of the second close contact piece, and a locking jaw is formed at a portion where the extension part is seated in the second close contact hole. The method of claim 5, And the second close fitting hole is formed on a boundary between the upper cover and the lower cover. The method according to any one of claims 1 to 4, The connecting housing is formed in such a way that the guide projection protrudes to the rear, the cover-mounted vehicle preheater, characterized in that the front end of the cover is fitted. (+) And (-) terminals extending in the longitudinal direction, the heat fin assembly interposed between the (+) and (-) terminals, and one side is electrically connected to the (+) terminal and the other side A PTC element in contact with the heat fin assembly electrically connected to the (-) terminal, a cover accommodating the (+) terminal, the (-) terminal, the heat fin assembly and the PTC element together with a vent hole formed on the surface thereof; In the cover-mounted vehicle preheater comprising a connection housing coupled to the end of the cover, The cover is composed of an upper cover and a lower cover coupled to overlap each other, the upper cover and the lower cover is formed with a plurality of clip coupling grooves in the circumferential direction, characterized in that the clip is fitted into the clip coupling groove Cover-mounted car preheater. The method of claim 9, The clip is a 'c'-shaped channel type, the clip coupling groove is a cover-coupled vehicle pre-heater, characterized in that formed in a shape corresponding to the clip. The method of claim 10, Cover-mounted vehicle preheater, characterized in that the thickness of the clip and the depth of the clip coupling groove is the same. The method according to any one of claims 9 to 11, The connecting housing is formed in such a way that the guide projection protrudes to the rear, the cover-mounted vehicle preheater, characterized in that the front end of the cover is fitted. The method according to any one of claims 9 to 11, A second close fitting hole is formed at the front end of the cover, and the connecting housing is inserted into a second close fitting piece that is brought into close contact with the inner surface of the second close fitting hole when assembled, and is inserted into the center of the second close fitting piece. A cover-mounted vehicle preheater, wherein a second expansion insertion rod is formed to closely contact the second close contact piece to the inner side surface of the second close contact hole.

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