KR102111389B1 - Heater for motor vehicle - Google Patents

Abstract

The present invention is a heat source portion; A heat source portion rod provided with a rod side wall and a rod cover to accommodate the heat source portion; A first heat sink comprising a first heat generating region on which one side of the heat source portion is disposed and a first air flow region in which at least one first through hole is formed; It provides a heater for a vehicle comprising a; and a second heat-dissipating plate comprising a second heat-generating region in which the other side of the heat source portion is disposed and a second air flow region in which at least one second through-hole is formed. In particular, the heat source portion is provided between the first heat sink and the second heat sink, characterized in that the rod side wall is provided integrally with the first heat sink.

Description

Vehicle heater {HEATER FOR MOTOR VEHICLE}

The present invention relates to a heater for a vehicle, and more particularly, is disposed perpendicular to the air flow direction, and a heat source portion made of a PTC element is disposed in a heating region between heat sinks spaced apart a predetermined distance. In addition, at least one of the side wall or the rod cover is integrally extruded to at least one of the heat sinks, thereby facilitating mechanical coupling and improving a heat generation performance.

  The hot water heater used for indoor heating of the vehicle heats the incoming air by circulating the heated heat exchange medium (coolant) through the engine to the heater core. However, during the initial start-up of the vehicle, a considerable amount of time is delayed until the heat exchange medium is heated.

  As a method to compensate for this, an electric heater or an electric heater is recently used. For example, a PTC heater (Positive Temperature Coefficient Heater) that directly heats inflow air is an auxiliary heating means, together with a hot water heater or independently. Is being used. Examples of patent documents related to PTC heaters include Korean Patent Publication No. 2010-0055262, Korean Patent Registration No. 1163448, and Korean Patent Publication No. 2006-0119163 by the applicant.

  Referring to FIG. 1, which is a conventional technique, the direction of air flow is indicated by an arrow, and a rod assembly in which the PTC device 11 is assembled, and a plurality of heat dissipation fins 12 bonded to the rod assembly to emit heat are adhered. It is coupled by means, and further includes a housing 20 for protecting the heat dissipation unit 12. In general, the heat dissipation fins of FIG. 1 are called corrugated fins, and there is an advantage of increasing the heat dissipation area in a zigzag shape, but there is a disadvantage in that the manufacturing and assembly process is complicated and the volume and weight are large.

  In addition, in the prior art, as the heat source portion including the PTC element is arranged in parallel with the air flow direction, the area of formation of the heat source portion is directly affected by the heat generation performance. Accordingly, there was a limit in reducing the thickness (air flow direction) of the PTC heater.

Meanwhile, the PTC device according to the related art is usually supported on a separate rod assembly for accommodating the PTC device and is coupled by other heat dissipation means and an adhesive. However, when gaps or voids are formed between the heat dissipation means and the rod assembly and are not in close contact with each other, there is a problem that the heat exchange efficiency is lowered. In addition, variations in heat dissipation performance may occur depending on the amount of the adhesive means applied.

Furthermore, when the heat load is repeated, an attenuation phenomenon of the adhesive force occurs, which may cause durability and deterioration of performance and defective products after a certain period of operation.

  In addition, when the heat dissipation performance is deteriorated, an electrical problem may occur, and since a plurality of heat dissipation fins must be combined by an adhesive means, the working environment is not good, the assembly process is cumbersome, and the number of parts, weight, and cost increase. It becomes a factor.

Republic of Korea Patent Publication No. 2010-0055262 (2010.05.26. Published) Republic of Korea Registered Patent No. 1163448 (announced on Jul. 02, 2012) Republic of Korea Patent Publication No. 2006-0119163 (Nov. 24, 2006)

The present invention is intended to solve the above problems, and with a simple configuration, it is an object of the present invention to provide a heater for a vehicle that is easy to assemble and can use a minimum number of parts and adhesive means. In addition, it is intended to provide a heater for a vehicle capable of improving heat exchange performance and durability by maintaining mutual adhesion of components even when heat load is repeated and preventing flow.

The present invention, a heat source portion; A heat source portion rod provided with a rod side wall and a rod cover to accommodate the heat source portion; A first heat sink comprising a first heating zone and a first air flow zone in which at least one first through hole is formed; And a second air flow region including a second heat generating region and a second air flow region in which at least one second through hole is formed; Including, the heat source portion is provided between the first heat sink and the second heat sink, the rod side wall discloses a heater for a vehicle, characterized in that provided integrally with the first heat sink.

Preferably, the heat source portion may include a PTC element, an electrode plate in electrical contact with the PTC element, and an insulating guide member that insulates the PTC element and the electrode plate from the rod sidewall.

The side wall of the rod may be integrally extruded with the first heat sink, and the first heat sink, the heat source, and the second heat sink may be combined in the same axial direction as the PTC element and the electrode stack. It can be characterized as.

More preferably, at least one opening portion on which the PTC device can be seated is formed on an upper surface of the insulating guide member, and an electrode plate storage portion on which the electrode plate can be seated is provided on the lower surface of the insulating guide member. Protrusions may be provided to be formed. In addition, an insulating layer interposed between the electrode plate and the first heat sink plate may be further included.

Alternatively, the insulating guide member may include at least one opening portion on which the PTC device can be seated on an upper surface, and a slit-shaped electrode plate storage port on which a side of the electrode plate can be slidingly inserted and an insulating portion. Can be.

As a first preferred embodiment, the rod cover includes a first rod cover having a stepped portion, and the rod sidewalls are formed on a pair of first side walls spaced apart from each other by a predetermined distance, and upper ends of the first side walls, respectively. A first rod comprising at least one first deformed portion which is formed from a first engaging jaw for seating the step portion of the first rod cover and extended from the first engaging jaw to be bent and coupled to the upper surface of the step portion. It may be a vehicle heater characterized in that the side wall. Furthermore, the first rod cover and the second heat sink can be combined by an adhesive means.

As a second preferred embodiment, a plurality of fastening grooves are formed in the second heat sink, and the rod sidewalls are formed to extend through the pair of second side walls and the fastening grooves spaced a predetermined distance, and thus the upper surface of the second heat sink. It may be a heater for a vehicle, characterized in that the second side wall of the rod comprising at least one second deformed portion that is pressurized to bend or caulk.

More preferably, the second rod sidewalls are each formed at an upper end portion of the second side wall, and it is preferable that the second heat sink further includes a second locking jaw to be seated at a predetermined distance from the first heat sink.

As a third preferred embodiment, the rod cover is provided with a separable rod cover having a stepped portion, and the rod sidewalls are formed on a pair of third side walls spaced a predetermined distance apart, and on the inner side of the third side walls, respectively. It may be a heater for a vehicle, characterized in that the step portion of the separable rod cover is a third rod side wall including a first guide groove that can be slidably inserted. Furthermore, the separable rod cover and the second heat sink can be combined by an adhesive means.

In a fourth preferred embodiment, the rod sidewall is a fourth rod sidewall comprising a pair of fourth sidewalls spaced a predetermined distance and a second guide tab bent inwardly from an upper end of the fourth sidewall, respectively. In the cover, the cover body formed by protruding the second heat sink in a direction in contact with the heat source part is formed at both ends of the second heat sink and the cover body, and is capable of slidingly engaging the second guide tab of the side wall of the fourth rod. It may be a heater for a vehicle, characterized in that the integral rod cover is integrally provided, including a three-guide groove. Furthermore, the side wall of the fourth rod may further include a second guide groove formed on an inner surface of the fourth side wall.

According to the heat exchanger according to the present invention, the thickness can be reduced with a simple structure, thereby providing compact packaging. In addition, since the first heat sink and the second heat sink perform heat dissipation functions by themselves, they are much easier to manufacture and assemble than the heat sink fins used in the prior art. Furthermore, the through holes formed in the first heat sink and the second heat sink have an effect and effect as a heat dissipation fin, and can be manufactured in various shapes and patterns, thereby having an excellent application potential as an optimized vehicle heater.

In addition, as one or both surfaces of the heat source rod portion between the first heat sink and the second heat sink are mechanically coupled, the use of the adhesive means can be minimized, improving durability even when the heat load is repeated, and performance variation caused by uneven adhesion of the adhesive means Can be minimized.

Particularly, as the side walls of the rod are integrally extruded from the first heat sink, the number of parts is reduced, and mutual adhesion between components is improved. Furthermore, when the rod cover is integrally extruded on the second heat sink, the use of an adhesive means is unnecessary, and there is an advantage in that the above-mentioned problems are solved in one step.

1 is a perspective view showing a PTC heater according to the prior art.
Figure 2 is an exploded perspective view showing a first embodiment according to the present invention.
Figure 3 is a perspective view showing a combination of a plurality of first embodiment according to the present invention.
Figure 4 is an exploded perspective view showing an embodiment of a heat source portion constituting the first embodiment according to the present invention.
Figure 5 is a cross-sectional view showing a state before coupling of the first embodiment according to the present invention.
Figure 6 is a cross-sectional view showing a state after the combination of Figure 5;
Figure 7 is a cross-sectional view showing a state before coupling of the second embodiment according to the present invention.
Figure 8 is a cross-sectional view showing a part of the bonding process of Figure 7;
Figure 9 is a cross-sectional view showing a state after bonding by the bending of Figure 8;
Figure 10 is a cross-sectional view showing a state after bonding by the caulking operation of Figure 8;
11 is an exploded perspective view showing a third embodiment according to the present invention.
12 is a cross-sectional view showing a state after the coupling of the third embodiment according to the present invention.
13 is a cross-sectional view showing a state before coupling of the fourth embodiment according to the present invention.
14 is a cross-sectional view showing a state after the coupling of FIG. 13;
15 is an assembled perspective view showing another embodiment of a heat source constituting the present invention.

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

2 to 6 are diagrams showing a first embodiment according to the present invention. Referring to the exploded perspective view of FIG. 2 and the combined perspective view of FIG. 3, the vehicle heater of the present invention includes a first heat sink 30 in a direction perpendicular to the air flow direction (Z-axis direction of FIG. 2) (X-axis direction of FIG. 2) ) And the second heat sink 50 are disposed, and a heat source unit 10 is provided therebetween.

Here, a heat source portion rod R provided with a rod sidewall RS and a rod cover RC for receiving the heat source portion 10 is provided (in FIG. 2, as a specific embodiment, a first rod sidewall RS1 is provided). ) And the detachable rod cover (RC1) are shown in the figure). In particular, the rod side wall (RS) is characterized in that it is extruded integrally with the first heat sink (30). Furthermore, as well as the rod sidewall RS, the rod cover RC may be extruded integrally with the first heat sink 30 and / or the second heat sink 50.

Referring to FIG. 2, a heater for a vehicle according to the present invention installed and used in a vehicle is typically heat-exchanged by inflow of air from the front of the vehicle (Z-axis direction) and through the vehicle heater to discharge air. The first heat sink 30 and the second heat sink 50 constituting the present invention are arranged in the Z-axis direction in FIG. 2.

At this time, in FIG. 2, the first heat sink 30 is disposed in front of the second heat sink 50 in the air inflow direction, but the front-rear order of the first heat sink and the second heat sink may be interchanged. In the present specification, for convenience of explanation, the heat sink for mounting the heat source unit 10 as shown in FIGS. 5 to 10 and 12 to 14 will be defined as the first heat sink 30 and opposed thereto. The heat sink will be divided into a second heat sink 50.

In Fig. 2, the heat source part 10 constituting the present invention is indicated by a dotted line. The heat source unit 10 may be first assembled by a separate rod assembly (not shown), and then coupled to the first heat sink 30 and the second heat sink 50 by adhesive means, respectively.

However, in the present invention, in the heat source portion rod R for accommodating the heat source portion 10, at least one or more surfaces forming the heat source portion rod R may be integrally formed in advance on the first heat sink 30. Can be. Here, the at least one or more surfaces may be a rod side wall RS and / or a rod cover RC forming the heat source rod R. Preferably, the first heat dissipation plate 30 and the heat source portion rod R are integrally manufactured by an extrusion molding method using a material having excellent thermal conductivity, thereby minimizing the use of adhesive means to be described later.

Referring to FIG. 2, as an embodiment of the rod sidewall RS constituting the heat source rod R, a pair of first rod sidewalls RS1 integrally extruded from the first heat sink 30 Shows. The heat source unit 10 is seated in a predetermined space formed between the pair of first rod sidewalls RS1, and is provided by the first heat sink 30 and the first rod sidewalls RS1 by the separable rod cover RC1. The heat source unit 10 can be accommodated by closing the formed opening. Thus, the temporary assembly by the first heat sink 30, the heat source portion 10 and the removable rod cover RC1, in which the first rod sidewall RS1 is integrally formed, is completed. At this time, the inside of the first heating area H1 of the first heat sink 30 can perform a function of a kind of rod cover RC to reduce the number of parts and the assembly process and improve the heating efficiency.

Referring to FIG. 2, the first heat sink 30 has at least one first through hole 340 formed in a predetermined area of the first plate 320. On the partition, the first heat sink 30 is provided including a first air flow region P1 and a first heat generating region H1. The first heat generating region H1 refers to regions of the inner surface and the outer surface on which the heat source part 10 is seated, and the first air flow region P1 is the first air flow region P1 in the first heat sink 30 Except for the region will be referred to.

After manufacturing the first heat sink 30 in which the first rod sidewall RS is integrally extruded, at least one or more first through holes 340 may be formed by using a punching press device or the like. More preferably, a louver pin (not shown) for improving air inflow force may be added to the first through hole 340.

In FIG. 2, as a preferred embodiment of the first through hole 340, an air through hole having a slant shape in a diagonal direction is illustrated. However, the present invention is not limited thereto, and the shape, number, arrangement, and pattern of the first through holes 340 may be used in various combinations for optimal air heat exchange. For example, the first through hole 340 may be provided in a rectangular shape (not shown).

Inside the first heat sink 30 facing the air flow direction, an inner surface of the first heat generating region H1 to which the heat source unit 10 is to be seated is formed. In FIG. 2, as a preferred embodiment, although the heat source portion 10 is disposed at the center of the first heat sink 30 in the Z-axis direction, the present invention is not limited thereto. In addition, when the first heat sink 30 is viewed from the Z-axis direction, it is shown as a rectangular cross-section, but it may be understood that a ratio such as a square or other polygonal shape, or a shape in which other ancillary members are combined may be used.

In addition, although FIG. 2 shows a state in which one heat source part 10 accommodated in one heat source part rod R is assembled in the first heat sink 30, a plurality of heat source part loads are placed in the first heat sink 30. Of course, the (R) and the heat source 10 that can be accommodated therein can be seated.

On the other hand, with the heat source portion 10 interposed therebetween, the first heat sink 30 and a second heat sink 50 which is provided to be spaced apart from each other by the second heat generating area H2 and at least one or more second through holes 540 ) Is formed, including the formed second air flow region P2.

Referring to FIG. 2, the second through-hole 540, which is a slit-shaped air through hole, is disposed to intersect the diagonal direction of the first through-hole, thereby allowing air in a space between the first heat sink 30 and the second heat sink 50 Turbulence can be caused to ensure sufficient heating. However, the shape, number, arrangement, and pattern of the second through hole 540 are not limited to this, and the first through hole or the second through hole may be variously applied, such as a rectangular hollow portion.

Duplicates between the first heat-generating region (H1) and the first through-hole (340) of the first heat-radiating plate (30) among the contents of the second heat-generating region (H2) and the second through-hole (540) of the second heat-radiating plate (50). Since the description is substantially the same, it will be omitted.

3 shows an embodiment in which a plurality of vehicle heaters made of a first heat sink / heat source unit / heat source unit rod / second heat sink according to the first embodiment of the present invention are stacked in the X-axis direction. Referring to a partial enlarged view of an enlarged dotted circle of FIG. 3, a pair of first rod sidewalls RS1 integrally extruded from the first heat sink 30 is formed to extend, and the distal end of the rod cover is separated. After being bent (or folded) in the stepped portion of (RC1), the outer surface of the separable rod cover RC1 is joined to the second heat sink 50 by means of an adhesive or the like. (The detailed assembly process will be described later.)

Preferably, one side of the vehicle heater may further include a housing 90 capable of transmitting electricity to the electrode plate or fixing a plurality of first and second heat sink plates. The housing 90 may be easily inserted into the HVAC of the vehicle and may be provided in a sealed shape.

4 is an exploded perspective view showing an embodiment of the heat source unit 10 constituting the present invention. The heat source unit 10 is configured to generate heat electrically, and may include various electric elements applicable to the present invention. Preferably, a heating element such as a PTC Heater (Positive Temperature Coefficient Heater) or a carbon nanotube (CNT) may be used.

Referring to FIG. 4, in one embodiment of the heat source unit 10 constituting the present invention, a PTC device 120, an electrode plate 140 in electrical contact with the PTC device, and the PTC device and the electrode A guide member 160 for insulating the plate from the rod sidewall RS may be included.

Preferably, the insulating layer 180, the electrode plate 140, the insulating guide member 160 sequentially in a predetermined space formed between the pair of first rod sidewalls RS1 of the first heat sink 30 Then, the heat source unit 10 may be temporarily assembled by placing the PTC device 120 on at least one opening portion 162 formed in the insulating guide member 160.

4, it is also possible to stack the elements constituting the heat source in opposite directions. For example, the guide member 160 for insulation in which the PTC element 120 is seated is disposed in a space formed between the first rod sidewalls RS1 of the first heat sink 30, and then the electrode plate 140 in turn. ) And the insulating layer 180 are stacked, and then closed with a separable rod cover RC1 to temporarily assemble the heat source portion 10.

On the other hand, the cross-sectional shape of the insulating guide member 160, as shown in Figure 4, the protruding portions 164 are formed on both sides, the electrode plate receiving portion 166 in which the electrode plate 140 can be disposed therebetween Can form. The insulating guide member 160 and the insulating layer 180 may be provided in various shapes to prevent electrical short circuit caused by the electrode plate 140 by being made of a non-conductive material that does not conduct electricity.

The insulating guide member 160 and the insulating layer 180 prevent shorts that occur when electrical contact is made between the electrode plate 140 serving as the positive electrode terminal and the heat source rod R serving as the negative electrode terminal. In addition, it is preferable to be provided with a material having strong heat resistance and excellent thermal conductivity. In one embodiment of the present invention, an insulating guide member 160 is made of synthetic resin such as plastic, which performs not only a function of preventing a short circuit, but also a function of providing ease of insertion when fixing and assembling a PTC device.

At this time, the width of the insulating layer 180 is provided to be larger than the width of the electrode plate 140, as shown in FIG. 5 to be described later, and the width of the electrode plate 140 is larger than the width of the PTC device 120. By doing so, it is possible to improve insulation and assembling properties.

On the other hand, in FIG. 4, although the heat generation of the PTC device 120 is illustrated using one electrode plate 140, the electrode plate may be used as an anode plate and a cathode plate if the PTC element is heated to realize the operation and effects of the present invention. Needless to say, a heat source part provided with and providing a guide member for insulation can be used.

In FIG. 4, the commonly used PTC device 120 is shown in the shape of a cuboid. For reference, in the case of a commercial PTC device adopted to implement the present invention, the length (L) * width (W) * thickness (t) is 30 * 10 * 1 mm each. Therefore, the largest area (L * W) is in contact with the electrode plate 140, the second heat sink 50, or the rod cover RC, thereby maximizing heat transfer.

In addition, by placing the thinnest thickness (t) on the Z axis, which is the air flow direction, the separation distance between the first heat sink 30 and the second heat sink 50 is minimized, so that the thickness is more than half that of a conventional PTC heater. There is an effect that can provide a reduced thin film (薄膜) type vehicle heater.

That is, according to the present invention, the bonding direction of the first heat sink 30, the heat source 10 and the second heat sink 50 is the same in the axial direction, compared to the stacking directions of the PTC device 120 and the electrode plate 120. It can be made.

On the other hand, the shape of the insulating guide member 160 with reference to FIG. 4 uses an insulating layer 180 in order to prevent direct electrical contact between the electrode plate 140 and the first heat sink 30, and FIG. Likewise, if the shape of the insulating guide member is designed to form the slit-shaped electrode plate storage port 166 ', the insulating layer 180 as shown in FIG. 4 may be omitted, even if omitted, according to an embodiment.

5 is a cross-sectional view showing a state before bonding of the first embodiment according to the present invention, and FIG. 6 is a cross-sectional view showing a bonding state after FIG. 5.

Referring to FIG. 5, the first rod sidewall RS1, which is an embodiment of the rod sidewall RS, is integrally extruded on the first heat sink 30 and the rod cover RC is disposed at the top of the first rod sidewall RS1. ), An assembly process of the first embodiment in which the detachable rod cover RC1 is seated is illustrated.

More specifically, the removable rod cover RC1 may include a rod cover body rc12 and a step portion rc14 formed at both ends of the rod cover body.

Correspondingly, the first rod sidewall RS1 includes a pair of first side walls rs11, a first locking jaw rs12, and a first extension tab rs14 spaced a predetermined distance in the X-axis direction of FIG. 5. It may be provided. The pair of first side walls rs11 are formed to extend from the first heat sink 30 with a predetermined space to which the heat source portion 10 is to be seated.

The upper end of the first side wall rs11 is provided with a first locking jaw rs12 on which the lower surface rc14b of the stepped portion rc14 of the separable rod cover RC1 is seated inward toward the heat source portion 10. Can be. In addition, a predetermined portion of the first extension tab rs14 extending from the first engaging jaw rs12 is bent into a first deformed portion rs16 when a predetermined pressure is applied during the assembly process.

Referring to FIG. 6, a predetermined portion of the first extension tab rs14 is bent on the upper surface rc14a of the stepped portion rc14 of the separable rod cover RC1 by pressing to form a first deformed portion rs16. It can be combined as it changes. In addition, the first extension tab rs14 may be provided integrally with the first side wall rs11 during extrusion molding, but it may also be partially provided on the first side wall rs11 according to an embodiment. Of course, it belongs to the scope of the invention.

When the first extension tab rs14 is pressed to form the first deformed portion rs16, the bottom surface of the PTC element 120 and the rod cover body rc12 is in close contact without voids, but due to physical force due to pressurization. It is preferable that the force is adjusted so that an appropriate range of force is applied in a range where there is no fear of damage.

Furthermore, an adhesive means 70 may be further added to the surface where the rod cover body rc12 and / or the first deformed portion rs16 abut the second heat sink 50 may be combined with the second heat sink 50. . More preferably, the adhesive means may be a heat-dissipating silicone, but is not limited thereto, and of course, various thermally conductive adhesives applicable to the present invention may be used.

At this time, between the second heat sink 50 and the separable rod cover RC1, and between the separable rod cover RC1 and the PTC device 120, the heat exchange efficiency can be improved.

In addition, as the rod sidewall RS constituting the heat source rod portion R is integrally extruded on the first heat sink 30, the first heat sink 30 and the heat source portion 10 are without using adhesive means. There is an advantage that can be assembled. Preferably, the heat sinks (30, 50) may be used, such as aluminum alloy, but is not limited to such a material, it is applicable to the present invention, extrusion molding is possible, and a material having excellent thermal conductivity is selected and applied. Of course it can.

In addition, in the prior art, the heat source portion rod had to be provided in a separate tube shape for receiving the heat source portion 10, but in the present invention, one surface of the first heat sink 30 of the first heat sink 30 is provided with one surface of the rod cover RC. As it is replaced by H1), not only an adhesive means is unnecessary, but also an additional effect of weight reduction is inherent.

On the other hand, although the Y-axis end portion of the heat source rod portion R is not shown in the drawing, a sealing portion (not shown) for fixing the heat source rod portion R and preventing foreign matter from entering may be further included.

Next, FIG. 7 is a cross-sectional view showing a state before the coupling of the second embodiment according to the present invention, FIG. 8 is a cross-sectional view showing a part of the state of the coupling process of FIG. 7, and FIG. 9 is after the bonding by press bending in FIG. 8 It is a sectional view showing a state. On the other hand, Figure 10 is a cross-sectional view showing a state after coupling by caulking (caulking) in FIG. Hereinafter, the second embodiment will be described with reference to FIGS. 7 to 10, but content overlapping with the first embodiment will be omitted.

Referring to FIG. 7, in the second embodiment according to the present invention, the above-described removable rod cover RC1 may be omitted. Instead, the second heat sink 50 is provided with at least one fastening groove (560a, 560b).

On the other hand, the rod sidewall RS applied to the second embodiment is substantially the same in shape as the first rod sidewall RS1 described above, but has a second difference in length and assembly method of the second extension tab rs24. It may be provided as a rod side wall (RS2).

That is, the second rod sidewall RS2 is formed to extend a predetermined length from the pair of second side walls rs21 and the second side walls spaced a predetermined distance, and can penetrate through the fastening grooves 560a and 560b of the second heat sink, respectively. It includes a second extension tab (rs24). The length of the second extension tab rs24 penetrates through the fastening grooves 560a, 560b of the second heat sink 50, and then is bent by a second deformed portion (rs26, see FIG. 9) or by caulking. The modified caulking portion rs28 (see FIG. 10) may be manufactured to a length sufficient to be formed.

Preferably, the upper side of the second side wall (rs21) by further comprising a second locking jaw (rs22) for the lower surface of the second heat sink 50 to be seated at a predetermined distance from the first heat sink 30, It is preferable that the lower surface of the two heat sink 50 is in contact with the PTC device 120.

At this time, the second heat-generating region H2 of the second heat-radiating plate 50 in contact with the top of the heat-source portion acts as a rod cover RC that is one surface of the heat-source portion rod. In addition, the first heating area H1 of the first heat sink 30 in contact with the lower portion of the heat source portion acts as a rod cover RC, which is one surface of the rod. Accordingly, it is possible to simplify the assembly step and further reduce the weight, and heat exchange performance may be further improved by direct contact between the PTC device 120 and the second heat sink 50. In the present invention, the rod cover (RC) constituting the heat source portion rod (R) refers to supporting the upper and / or lower surfaces of the heat source portion, and may be used singly or in plural, and also includes integrally formed with a heat sink in manufacturing. Is defined as

FIG. 8 shows that each of the second extension tabs rs24 constituting the second rod sidewall RS2 penetrates the first fastening groove 560a and the second fastening groove 560b of the second heat sink 50. It is a sectional view shown. In this state, the second extension tab rs24 can be bent and pressed to be coupled to the upper surface of the second heat sink 50 with the second deformed portion rs26 as shown in FIG. 9.

In FIG. 9, the bent direction is shown inward, but of course, it may be bent in the outer direction. In addition, the second extension tab rs24 is formed in the upper end of the second side wall rs21 as well as partially formed, but it may be partially formed as in the first embodiment. Depending on the cross-sectional shape and number of the second extension tab rs24, a fastening groove 560 corresponding thereto may be formed in the second heat sink 50.

As another example of bonding, FIG. 10 shows a combined state by the caulking method in the state of FIG. 8. For the caulking operation, a known method may be adopted, and the end of the second extension tab rs24 may be pressed to form a caulking portion rs28 as shown in FIG. 10. On the other hand, FIG. 10 shows that the caulking portion rs28 is formed on the outer surfaces of the fastening grooves 560a and 560b of the second heat sink 50, but the fastening groove itself is provided in a tapered shape so as to become wider in the upward direction. Of course, the caulking portion can be formed to be buried at a predetermined depth on the upper portion of the fastening groove (not shown).

Meanwhile, in the second embodiment of the present invention, a pair of second rod sidewalls RS2 are respectively formed on the first heat sink 30, and the second extension tab rs24 extended therefrom is the second heat sink 50 After passing through the fastening grooves (560a, 560b), respectively, the pressurized example was described. However, the scope of the present invention is not limited to this, and one second rod side wall RS2 and a first fastening groove are formed in the first heat sink 30 and fitted in the first fastening groove in the second heat sink 50. Another second rod side wall (RS2) and the second fastening grooves may be provided so as to face each other. However, this modification may lower the cost for manufacturing the first heat sink and the second heat sink, but may have a disadvantage that the assembly process is somewhat complicated.

Next, FIG. 11 is an exploded perspective view showing a third embodiment according to the present invention, and FIG. 12 is a cross-sectional view showing a state after coupling of the third embodiment according to the present invention.

In the above-described first and second embodiments, a process in which the steps of bending the extension tabs rs14 and rs24 into bending portions rs16 and rs26 is intervened during assembly is described. On the other hand, the third embodiment is provided with a first guide groove (rs36) in which the detachable rod cover (RC1) with a stepped portion (rc14) can be slidably inserted in the Y-axis direction (direction through the ground of FIG. 12). It characterized in that the third rod side wall (RS3) is integrally formed with the first heat sink (30).

11 and 12, a third rod sidewall RS3 provided with a first guide groove rs36 may be integrally extruded on the first heat sink 30. The third rod sidewall RS3 is formed on a pair of third side walls rs31 and an inner surface of the third side wall, and a first step portion rc14 of the separable rod cover RC1 can be slidingly inserted. It may be made by including a guide groove (rs36). That is, the first guide groove rs36 may be provided in a shape in which a portion is opened between the third side wall rs31 and the first guide tab rs34 constituting the third rod side wall RS3.

When the assembly process is described with reference to FIGS. 11 and 12, after the heat source portion 10 is seated in the space between the third side walls rs31, the stepped portion rc14 of the separable rod cover RC1 is third. Slidingly inserts into the first guide groove rs36 of the rod side wall RS3. Thereafter, the present invention is completed by interposing an adhesive means 70 between the upper surface of the separable rod cover RC1 and the second heat sink 50.

Next, FIG. 13 is a cross-sectional view showing a state before joining in a fourth embodiment according to the present invention, and FIG. 14 is a cross-sectional view showing a state after joining in FIG. 13.

13 and 14, a fourth embodiment according to the present invention is characterized in that the rod cover RC2 is integrally formed with the rod cover RC on the second heat sink 50. Rod side wall (RS) that can be mechanically coupled to the integral rod cover (RC2), the fourth rod side wall (RS4) may be provided integrally with the first heat sink 30, more preferably, by extrusion molding The fourth rod sidewall RS4 and the first heat sink 30 may be integrally provided.

First, the integral rod cover RC2 integrally formed on the second heat sink 50 may include a rod cover body rc22 and a third guide tab rc24 formed protruding from both ends of the rod cover body. A third guide groove rc26 is formed between the second heat sink 50 and the third guide tab rc24.

Meanwhile, the fourth rod sidewall RS4 extends from the first heat sink 30 and a pair of fourth side walls rs41 spaced apart from each other by a predetermined distance, and a direction in which the heat source portion 10 is built in from the top of the fourth side wall. It may be made of a second guide tab (rs44) vertically bent inward.

Referring to FIG. 14, the second guide tab rs44 of the fourth rod sidewall RS4 may be engaged with the third guide groove rc26 of the integral rod cover RC2. More preferably, the fourth side wall (rs41) is formed on the inner surface of the load cover body (rc22) may further include a fourth engaging jaw (rs42) that can seat both ends. The fourth locking jaw rs42 may form a fourth guide rail rs46 therebetween together with the second guide tab rs44, and seat both ends of the integral rod cover RC2 more firmly.

Meanwhile, FIG. 15 is an assembled perspective view showing another embodiment 160 'of the insulating guide member constituting the present invention. Referring to FIG. 15, without using the insulating layer 180 shown in FIG. 4, an insulating guide member 160 ′ capable of maintaining the insulating state between the electrode plate 140 and the heat source rod R is provided. do.

More specifically, the insulating guide member 160 ′ is provided with at least one opening portion 162 on the upper surface corresponding to the shape of the PTC device 120. In addition, the opening portion 162 seats the PTC device 120 so that the bottom surface of the PTC device 120 is in close contact with the top surface of the electrode plate 140, and the top surface of the PTC device can be in close contact with the heat sink It can be provided in size and height.

The side surface of the insulating guide member 160 'includes a slit-shaped electrode plate storage port 166' provided in a hollow portion shape in which the electrode plate 140 can be slidably inserted in the lateral direction as shown in FIG. At this time, the slit electrode plate storage port 166 'is provided to be insulated by the first heat sink 30 and the insulating portion 168'.

The insulating guide member 160 as shown in FIG. 4 may require a separate insulating layer 180, but the insulating guide member 160 'of FIG. 15 omits a separate insulating layer 180 and insulates. By being integrally provided with the guide member for use, it is possible to simplify the member.

As described above, in the vehicle heater according to the present invention, unlike the prior art, the rod sidewall RS is integrally formed with the first heat sink 30 to constitute a heat source portion rod R for receiving the heat source portion 10. do. In addition, there is provided a heater for a vehicle provided with a heat source unit 10 between the first heat sink 30 and the second heat sink 50.

Therefore, the rod assembly used in the prior art can be designed with a simpler structure, and the use of the adhesive means is replaced with a mechanical fastener or is used minimally, so that the close contact and fixation of the PTC device and the like are maintained. In addition, there is an effect capable of preventing problems such as performance variation caused by application of the adhesive means, as well as durability under repeated heat loads.

Furthermore, unlike the arrangement of the PTC device used in the prior art, the contact surface between the PTC device and the electrode plate is arranged in parallel to the first heat sink and the second heat sink, respectively, so that the thinnest thickness direction of the PTC device is in the air flow direction. It is arranged to be laid. Thereby, there is an effect of providing a heater for a vehicle having a compact structure (so-called “thin film structure”) that can be provided with a smaller thickness and volume than a vehicle heater according to the prior art.

The present invention is not limited to the above-described embodiments, and of course, the scope of application is various, and various modifications can be implemented without departing from the gist of the present invention as claimed in the claims.

1: Vehicle heater
10: heat source
120: PTC device 140: electrode plate
160, 160 ': Insulation guide member 180: Insulation layer
30: 1st heat sink
320: first plate 340: first through hole
50: second heat sink
520: second plate 540: second through hole
70: adhesive means
90: housing
R: Heat source rod (RS: Rod side wall RC: Rod cover)
RS1: First rod side wall RS2: Second rod side wall
RS3: Third rod sidewall RS4: Fourth rod sidewall
RC1: Separate type rod cover RC2: Integrated type rod cover

Claims (15)

A heat source part 10; A heat source rod (R) provided with a rod sidewall (RS) to receive the heat source portion (10);
A first heat sink 30 including a first heating region H1 and a first air flow region P1 in which at least one first through hole 340 is formed; And
A second heat dissipation plate 50 including a second heating region H2 and a second air flow region P2 in which at least one second through hole 540 is formed; Including,
The heat source portion 10 is provided between the first heat sink 30 and the second heat sink 50, the rod sidewall RS is provided integrally with the first heat sink 30,
A plurality of fastening grooves 560 are formed in the second heat sink 50,
The rod side wall RS is formed to extend through a pair of second side walls rs21 spaced a predetermined distance and the fastening groove 560 to be pressed to an upper surface of the second heat sink, and at least one of which is bent or caulked. Vehicle heater, characterized in that the second rod side wall (RS2) made of a second deformation portion (rs26). According to claim 1,
The rod side wall (RS) is a heater for a vehicle, characterized in that it is extruded integrally with the first heat sink (30). According to claim 1,
The heat source 10 includes a PTC device 120, an electrode plate 140 in electrical contact with the PTC device, and an insulating guide insulating the PTC device and the electrode plate from the rod sidewall RS. Vehicle heater, characterized in that it comprises a member (160, 160 '). According to claim 3,
At least one opening portion 162 on which the PTC device can be seated is formed on an upper surface of the insulating guide member 160, and the electrode plate 140 is disposed on a lower surface of the insulating guide member 160. Vehicle heater, characterized in that the protruding portion 164 is provided so that the electrode plate receiving portion 166 can be seated. The method of claim 4,
Vehicle heater, characterized in that it further comprises an insulating layer 180 interposed between the electrode plate 140 and the first heat sink (30). According to claim 3,
The insulating guide member 160 ′ is formed with at least one opening portion 162 in which the PTC device can be seated on an upper surface, and a slit-shaped electrode into which the electrode plate 140 can be slidably inserted. Vehicle heater, characterized in that it comprises a plate storage (166 '). According to claim 3,
The heater for a vehicle, characterized in that the first heat sink, the heat source part and the second heat sink are coupled in the same axial direction as the stacking direction of the PTC element and the electrode plate. delete delete delete According to claim 1,
The second rod sidewall RS2 is formed at an upper end portion of the second side wall rs21, respectively, and a second locking jaw for seating the second heat sink 50 at a predetermined distance from the first heat sink 30. rs22) further comprising a heater for a vehicle. delete delete A heat source part 10; A heat source rod (R) provided with a rod sidewall (RS) to receive the heat source portion (10);
A first heat sink 30 including a first heating region H1 and a first air flow region P1 in which at least one first through hole 340 is formed; And
A second heat dissipation plate 50 including a second heating region H2 and a second air flow region P2 in which at least one second through hole 540 is formed; Including,
The heat source portion 10 is provided between the first heat sink 30 and the second heat sink 50, the rod sidewall RS is provided integrally with the first heat sink 30,
The heat source portion rod (R) further includes a rod cover (RC),
The rod side wall RS comprises a pair of fourth side walls rs41 spaced a predetermined distance and a second guide tab rs44 each inwardly bent from an upper end of the fourth side wall RS4. )ego,
In the rod cover RC, the cover body rc22 formed by protruding the second heat sink 50 in a direction in contact with the heat source part 10 has both ends of the second heat sink 50 and the cover body rc22. It is formed on the fourth rod side wall (RS4) of the second guide tab (rs44) and a third guide groove (rc26) that can be slidingly coupled to the integral rod cover (RC2) characterized in that integrally provided Vehicle heater. The method of claim 14,
The fourth rod side wall (RS4) is a vehicle heater, characterized in that it further comprises a second guide groove (rs46) formed on the inner surface of the fourth side wall (rs41).

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