JP6425525B2 - Electric heater for vehicle air conditioner - Google Patents

Electric heater for vehicle air conditioner Download PDF

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JP6425525B2
JP6425525B2 JP2014247917A JP2014247917A JP6425525B2 JP 6425525 B2 JP6425525 B2 JP 6425525B2 JP 2014247917 A JP2014247917 A JP 2014247917A JP 2014247917 A JP2014247917 A JP 2014247917A JP 6425525 B2 JP6425525 B2 JP 6425525B2
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electric heater
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JP2016107865A (en
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山本　雄大
雄大 山本
孝則 西田
孝則 西田
田中　浩二
浩二 田中
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Japan Climate Systems Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant

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Description

本発明は、例えば自動車等に搭載される車両用空調装置に設けられる電気式ヒータの構造に関するものである。   The present invention relates to the structure of an electric heater provided in a vehicle air conditioner mounted, for example, in a car or the like.

従来より、例えば車両用空調装置には、空調用空気を加熱するための電気式ヒータが設けられることがある（例えば、特許文献１参照）。電気式ヒータは、ＰＴＣ素子と放熱用のフィンとを積層するとともに、ＰＴＣ素子及びフィンを積層方向に圧縮するためのバネ要素を備えており、ＰＴＣ素子、フィン及びバネ要素が枠型フレームによって積層状態で保持されている。   Conventionally, for example, an air conditioner for vehicles may be provided with an electric heater for heating air for air conditioning (see, for example, Patent Document 1). The electric heater laminates the PTC element and the heat radiation fin, and also includes the PTC element and the spring element for compressing the fin in the lamination direction, and the PTC element, the fin and the spring element are laminated by the frame frame. It is held in the state.

特許文献１では、枠型フレームの上辺部から下辺部まで延びて上辺部及び下辺部を連結する複数の支柱が設けられている。支柱は、上下方向に真っ直ぐに延びるとともに、枠型フレームの幅方向に等間隔に配置されている。そして、空気は枠型フレームの内部を通ってフィンを通過する間にＰＴＣ素子の熱によって加熱される。   In Patent Document 1, a plurality of columns extending from the upper side to the lower side of the frame-shaped frame and connecting the upper side and the lower side are provided. The columns extend vertically in the vertical direction and are equally spaced in the width direction of the frame frame. Then, the air is heated by the heat of the PTC element while passing through the inside of the frame and passing through the fins.

特許第４９３９４９０号公報Patent No. 4939490

ところで、特許文献１のように、ＰＴＣ素子、フィン及びバネ要素を枠型フレームによって積層状態で保持する場合、バネ要素の反発力の作用により枠型フレームの上辺部と下辺部とが開かないように複数の支柱が必要になる。しかしながら、枠型フレームの内部には空調用空気が通るようになっているので、支柱は空調用空気の流れを阻害し、流通抵抗を増加させることになる。このため、支柱の数はできるだけ減らしたいという要求があるが、単純に数を減らしたのでは枠型フレームがバネ要素の反発力によって変形する恐れがある。   By the way, when a PTC element, a fin and a spring element are held in a laminated state by a frame type frame as in Patent Document 1, the upper side portion and the lower side portion of the frame type frame are not opened by the action of repulsion force of the spring element. Will need multiple posts. However, since the air conditioning air passes through the inside of the frame, the pillars inhibit the flow of the air conditioning air and increase the flow resistance. For this reason, there is a demand to reduce the number of columns as much as possible, but if the number is simply reduced, the frame-type frame may be deformed by the repulsive force of the spring element.

本発明は、かかる点に鑑みてなされたものであり、その目的とするところは、枠型フレームの変形を抑制しながら、空気の流通抵抗を減少させることができるようにすることにある。   This invention is made in view of this point, The place made as the objective is enabling it to reduce the distribution resistance of air, suppressing a deformation | transformation of a frame-type flame | frame.

上記目的を達成するために、本発明では、枠型フレームにおける発熱体及びフィンの積層方向両側にそれぞれ第１辺部及び第２辺部を設け、第１辺部及び第２辺部を繋ぐ複数の繋ぎ部の間隔が、第１辺部及び第２辺部の長手方向中央部側よりも端部側が広くなるようにした。   In order to achieve the above object, according to the present invention, a plurality of first sides and a second side are provided on both sides of the heating element and the fin in the layering direction of the frame, and the plurality of first sides and the second side are connected. The end portion side of the joint portion is wider than the longitudinal central portion side of the first side portion and the second side portion.

第１の発明は、
電力の供給によって発熱する発熱体と、
上記発熱体に積層された状態で配設されるフィンと、
上記発熱体及び上記フィンを収容して積層状態で保持する枠型フレームと、
上記枠型フレームに保持された上記発熱体及び上記フィンを積層方向に圧縮するように付勢力を作用させるための付勢部材とを備え、
上記枠型フレームの内部へ送風された空調用空気が上記フィンを通過して加熱される車両用空調装置の電気式ヒータにおいて、
上記枠型フレームは、上記発熱体及び上記フィンの積層方向両側にそれぞれ位置する第１辺部及び第２辺部と、該第１辺部から該第２辺部まで延び、該第１辺部と該第２辺部とを繋ぐ複数の繋ぎ部とを有し、
複数の上記繋ぎ部は、上記第１辺部及び上記第２辺部の長手方向に間隔をあけて配置され、隣合う上記繋ぎ部の間隔は、上記第１辺部及び上記第２辺部の長手方向中央部に位置する上記繋ぎ部の間隔よりも端部側に位置する上記繋ぎ部の間隔の方が広くなるように設定されていることを特徴とする。 The first invention is
A heating element that generates heat due to the supply of power;
Fins disposed in a state of being stacked on the heating element;
A frame type frame that accommodates the heat generating body and the fins and holds the heat generation body and the fins in a stacked state;
The heating element held by the frame and the biasing member for applying a biasing force to compress the fins in the stacking direction,
In the electric heater of a vehicle air conditioner, air conditioning air blown into the inside of the frame is passed through the fins and heated.
The frame frame extends from the first side to the second side, the first side and the second side positioned respectively on both sides in the stacking direction of the heating element and the fin, and the first side And a plurality of connecting portions connecting the second side and the second side,
The plurality of connecting portions are arranged at intervals in the longitudinal direction of the first side portion and the second side portion, and the distance between the adjacent connecting portions is equal to that of the first side portion and the second side portion. The distance between the connecting portions located on the end side is set to be larger than the distance between the connecting portions located at the central portion in the longitudinal direction.

この構成によれば、枠型フレームの第１辺部と第２辺部とが複数の繋ぎ部によって繋がれるので、付勢部材による反発力に抗するように第１辺部と第２辺部との開きが抑制される。このとき、枠型フレームの第１辺部及び第２辺部にかかる撓み力は、長手方向中央部に近づくほど大きくなる一方、端部に近づくほど小さくなっている。この発明では、隣合う繋ぎ部の間隔が、第１辺部及び第２辺部の長手方向中央部よりも端部側が広くなっているので、第１辺部及び第２辺部にかかる撓み力が大きい中央部では繋ぎ部が密になり、撓み力が小さい端部寄りの部分では繋ぎ部が比較的密でなくなる。よって、複数の繋ぎ部によって枠型フレームの変形を効果的に抑制しながら、繋ぎ部の数を減らして空気の流通抵抗を減少させることが可能になる。   According to this configuration, since the first side portion and the second side portion of the frame frame are connected by the plurality of connecting portions, the first side portion and the second side portion are resistant to the repulsive force by the biasing member. The gap between the two is suppressed. At this time, the bending force applied to the first side portion and the second side portion of the frame frame increases as approaching the central portion in the longitudinal direction, and decreases as approaching the end portion. According to the present invention, since the distance between adjacent joint portions is wider at the end portion side than in the longitudinal central portion of the first side portion and the second side portion, the bending force applied to the first side portion and the second side portion In the central part where the が is large, the joints are dense, and in the part near the end where the bending force is small, the joints are not relatively dense. Therefore, it is possible to reduce the flow resistance of the air by reducing the number of connecting portions while effectively suppressing the deformation of the frame frame by the plurality of connecting portions.

第２の発明は、第１の発明において、
上記枠型フレームには、上記第１辺部及び上記第２辺部の長手方向の端部を覆うキャップ部材が設けられ、該キャップ部材は、上記第１辺部及び上記第２辺部の長手方向の端部に嵌合していることを特徴とする。 A second invention relates to the first invention,
The frame-shaped frame is provided with a cap member for covering an end of the first side and the second side in the longitudinal direction, and the cap member has a length corresponding to the length of the first side and the second side. It is characterized in that it is fitted at the end of the direction.

この構成によれば、キャップ部材を第１辺部及び第２辺部の長手方向の端部に嵌合させることで、第１辺部及び第２辺部の開きをキャップ部材によっても抑制することが可能になる。   According to this configuration, by fitting the cap member to the longitudinal end of the first side and the second side, the opening of the first side and the second side is also suppressed by the cap member. Becomes possible.

第３の発明は、第１または２の発明において、
上記枠型フレームの上記繋ぎ部は、空調用空気の流れ方向上流側と下流側にそれぞれ設けられ、
上流側の上記繋ぎ部は、上記第１辺部及び上記第２辺部に対して傾斜して延び、
下流側の上記繋ぎ部は、上流側の上記繋ぎ部とは反対方向に傾斜して延びるとともに、空調用空気の流れ方向に見たとき上流側の上記繋ぎ部と少なくとも一部が重なるように配置されていることを特徴とする。 In a third aspect of the present invention, in the first or second aspect,
The connecting portions of the frame are respectively provided on the upstream side and the downstream side in the flow direction of the air for air conditioning,
The upstream connecting portion extends obliquely with respect to the first side portion and the second side portion, and
The downstream side connecting portion extends in a direction opposite to the upstream side connecting portion, and is disposed so that at least a part thereof overlaps with the upstream side connecting portion when viewed in the flow direction of the air conditioning air It is characterized by being.

この構成によれば、空調用空気の流れ方向に見たとき、上流側の繋ぎ部と下流側の繋ぎ部とが交差するように配置されるので、枠型フレームの強度が高まって枠型フレームの変形抑制効果がより一層向上する。   According to this configuration, when viewed in the flow direction of the air conditioning air, the upstream link portion and the downstream link portion are arranged to intersect, so the strength of the frame frame is enhanced and the frame frame is formed. Deformation suppression effect is further improved.

第１の発明によれば、枠型フレームにおける発熱体及びフィンの積層方向両側にそれぞれ第１辺部及び第２辺部を設け、第１辺部及び第２辺部を繋ぐ複数の繋ぎ部の間隔が、第１辺部及び第２辺部の長手方向中央部よりも端部側が広くなるように設定したので、枠型フレームの変形を抑制しながら、空気の流通抵抗を減少させることができる。   According to the first aspect of the present invention, the first side and the second side are respectively provided on both sides of the heating element and the fin in the layering direction of the frame type frame, and a plurality of connecting parts are provided to connect the first side and the second side. Since the gap is set so that the end side is wider than the longitudinal central portion of the first side and the second side, the flow resistance of air can be reduced while suppressing the deformation of the frame frame. .

第２の発明によれば、枠型フレームの第１辺部及び第２辺部の長手方向の端部にキャップ部材を嵌合させるようにしたので、枠型フレームの変形抑制効果をより一層高めることができる。   According to the second invention, the cap member is fitted to the end in the longitudinal direction of the first side and the second side of the frame, so that the effect of suppressing deformation of the frame is further enhanced. be able to.

第３の発明によれば、空調用空気の流れ方向上流側と下流側にそれぞれ繋ぎ部を設け、下流側の繋ぎ部は、上流側の繋ぎ部とは反対方向に傾斜して延びるとともに、空調用空気の流れ方向に見たとき上流側の繋ぎ部と少なくとも一部が重なるように配置したので、枠型フレームの強度を高めることができ、枠型フレームの変形抑制効果をより一層向上させることができる。   According to the third aspect of the present invention, the connecting portions are respectively provided on the upstream side and the downstream side in the flow direction of the air conditioning air, and the downstream side connecting portion extends in a direction opposite to the upstream connecting portion. The frame-shaped frame can be enhanced in strength because it is disposed so that at least a part thereof overlaps the upstream link portion when viewed in the flow direction of the air, and the deformation suppressing effect of the frame-shaped frame can be further improved. Can.

実施形態１に係る電気式ヒータを備えた車両用空調装置の概略図である。1 is a schematic view of a vehicle air conditioner provided with an electric heater according to Embodiment 1. FIG. 電気式ヒータを空調用空気の流れ方向上流側から見た正面図である。It is the front view which looked at an electric type heater from the flow direction upper stream side of the air for air conditioning. 電気式ヒータの分解斜視図である。It is an exploded perspective view of an electric heater. 図２におけるIV−IV線断面図である。It is the IV-IV sectional view taken on the line in FIG. 実施形態２に係る図２相当図である。It is the FIG. 2 equivalent view which concerns on Embodiment 2. FIG. 実施形態２に係る図３相当図である。It is the FIG. 3 equivalent view which concerns on Embodiment 2. FIG.

以下、本発明の実施形態を図面に基づいて詳細に説明する。尚、以下の好ましい実施形態の説明は、本質的に例示に過ぎず、本発明、その適用物或いはその用途を制限することを意図するものではない。   Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following description of the preferred embodiments is merely illustrative in nature, and is not intended to limit the present invention, its applications, or its applications.

（実施形態１）
図１は、本発明の実施形態１に係る電気式ヒータ５を備えた車両用空調装置１の概略構成を示す図である。車両用空調装置１は、例えば自動車の車室内においてインストルメントパネル（図示せず）の内部に搭載され、空調用空気を温度調節して車室内の各部に供給することができるようになっている。 (Embodiment 1)
FIG. 1 is a view showing a schematic configuration of a vehicular air-conditioning system 1 provided with an electric heater 5 according to Embodiment 1 of the present invention. The vehicle air conditioner 1 is mounted, for example, inside an instrument panel (not shown) in a vehicle compartment of a car, and can adjust the temperature of air conditioning air and supply it to each part in the vehicle compartment. .

具体的には、車両用空調装置１は、ケーシング２と、送風ファン３と、冷却用熱交換器４と、電気式ヒータ５とを備えている。送風ファン３、冷却用熱交換器４及び電気式ヒータ５はケーシング２の内部に収容されている。送風ファン３は空調用空気を送るためのものである。冷却用熱交換器４は、空調用空気を冷却するためのものである。電気式ヒータ５は、ケーシング２の内部において冷却用熱交換器４よりも空調用空気の流れ方向下流側に配置されており、空調用空気を加熱するためのものである。また、ケーシング２の内部には、エアミックスダンパ６が配設されている。エアミックスダンパ６は、電気式ヒータ５を通過する空気の量を変更することによって空調風の温度を変更するためのものである。さらに、ケーシング２の内部には、デフロスタダンパ７、ベントダンパ８及びヒートダンパ９も配設されている。デフロスタダンパ７は、フロントウインド（図示せず）の内面に向けて吹き出す空調風の量を変更するためのものであり、また、ベントダンパ８は乗員の上半身に向けて吹き出す空調風の量を変更するためのものであり、また、ヒートダンパ９は乗員の足下近傍に向けて吹き出す空調風の量を変更するためのものである。   Specifically, the vehicle air conditioner 1 includes a casing 2, a blower fan 3, a cooling heat exchanger 4, and an electric heater 5. The blower fan 3, the heat exchanger for cooling 4, and the electric heater 5 are accommodated inside the casing 2. The blower fan 3 is for sending air for air conditioning. The cooling heat exchanger 4 is for cooling the air conditioning air. The electric heater 5 is disposed inside the casing 2 downstream of the cooling heat exchanger 4 in the flow direction of the air conditioning air, and is for heating the air conditioning air. Further, inside the casing 2, an air mix damper 6 is disposed. The air mix damper 6 is for changing the temperature of the conditioned air by changing the amount of air passing through the electric heater 5. Further, a defroster damper 7, a vent damper 8 and a heat damper 9 are also disposed inside the casing 2. The defroster damper 7 is for changing the amount of conditioned air blown out toward the inner surface of a front window (not shown), and the vent damper 8 changes the amount of conditioned air blown out toward the upper body of the occupant. In addition, the heat damper 9 is for changing the amount of conditioned air blown out toward the vicinity of the foot of the occupant.

図２及び図３に示すように、電気式ヒータ５は、上部発熱体５０、中央部発熱体５１及び下部発熱体５２と、複数のフィン５３と、バネ（付勢部材）５４と、枠型フレーム６０とを備えており、空調用空気の流れ方向から見たときに全体として左右方向に長い矩形状をなしている。上部発熱体５０、中央部発熱体５１及び下部発熱体５２は、車両に搭載されているバッテリ等（図示せず）からの電力の供給によって発熱する複数のＰＴＣ素子（図示せず）を備えた同じ構造のものであり、左右方向に長い板状をなしている。上部発熱体５０、中央部発熱体５１及び下部発熱体５２のそれぞれの内部には、複数のＰＴＣ素子が左右方向に並ぶように配置されている。   As shown in FIGS. 2 and 3, the electric heater 5 includes an upper heating element 50, a central heating element 51 and a lower heating element 52, a plurality of fins 53, a spring (biasing member) 54, and a frame type. A frame 60 is provided, and when viewed from the flow direction of the air conditioning air, it has a generally rectangular shape that is long in the left-right direction. The upper heating element 50, the central heating element 51 and the lower heating element 52 are provided with a plurality of PTC elements (not shown) that generate heat when power is supplied from a battery or the like (not shown) mounted on the vehicle. It has the same structure, and has a long plate shape in the left and right direction. In each of the upper heating element 50, the central heating element 51, and the lower heating element 52, a plurality of PTC elements are arranged in the left-right direction.

上部発熱体５０は、電気式ヒータ５の上下方向中央部よりも上寄りに配置されている。図３に示すように上部発熱体５０の右端部には、ＰＴＣ素子に接続される電極板５０ａが右側へ突出するように設けられている。中央部発熱体５１は、電気式ヒータ５の上下方向中央部に配置されている。中央部発熱体５１の右端部には、ＰＴＣ素子に接続される電極板５１ａが右側へ突出するように設けられている。下部発熱体５２は、電気式ヒータ５の上下方向中央部よりも下寄りに配置されている。下部発熱体５２の右端部には、ＰＴＣ素子に接続される電極板５２ａが右側へ突出するように設けられている。   The upper heating element 50 is disposed above the center of the electric heater 5 in the vertical direction. As shown in FIG. 3, an electrode plate 50a connected to the PTC element is provided at the right end of the upper heating element 50 so as to protrude to the right. The central heating element 51 is disposed at the center of the electric heater 5 in the vertical direction. At the right end of the central heating element 51, an electrode plate 51a connected to the PTC element is provided so as to protrude to the right. The lower heating element 52 is disposed below the center of the electric heater 5 in the vertical direction. An electrode plate 52a connected to the PTC element is provided at the right end of the lower heating element 52 so as to protrude to the right.

フィン５３は左右方向に長い連続する波型形状のコルゲートフィンである。フィン５３は、上部発熱体５０の上面及び下面、中央部発熱体５１の上面及び下面、下部発熱体５２の上面及び下面にそれぞれ配設されている。つまり、フィン５３は、上部発熱体５０、中央部発熱体５１及び下部発熱体５２に積層されている。   The fins 53 are corrugated fins which are continuous and long in the left-right direction. The fins 53 are disposed on the upper and lower surfaces of the upper heating element 50, the upper and lower surfaces of the central heating element 51, and the upper and lower surfaces of the lower heating element 52, respectively. That is, the fins 53 are stacked on the upper heating element 50, the central heating element 51 and the lower heating element 52.

上部発熱体５０と中央部発熱体５１との間に配設されている２つのフィン５３、５３の間には、左右方向に延びる板材５５が配設されている。板材５５の上面及び下面にそれぞれフィン５３が接触している。また、中央部発熱体５１と下部発熱体５２との間に配設されている２つのフィン５３、５３の間にも、同様な板材５５が配設されている。   A plate 55 extending in the left-right direction is disposed between the two fins 53, 53 disposed between the upper heating element 50 and the central heating element 51. The fins 53 are in contact with the upper surface and the lower surface of the plate member 55, respectively. A similar plate member 55 is also disposed between the two fins 53 and 53 disposed between the central heating element 51 and the lower heating element 52.

バネ５４は、電気式ヒータ５の上端部に位置しているフィン５３の上面に配設されている。バネ５４は、枠型フレーム６０に保持された発熱体５０〜５２及びフィン５３を積層方向に圧縮するように付勢力を作用させるためのものである。図４に示すように、バネ５４は、フィン５３の上面に沿って左右方向に延びる基板部５４ａと、基板部５４ａにおける空調用空気の流れ方向下流側の縁部から延びる弾性変形部５４ｂとを備えており、全体が弾性を有する金属材料で構成されている。弾性変形部５４ｂは、基板部５４ａから上方へ向かい、かつ、空調用空気の流れ方向上流側へ延びた後、先端側が下方へ屈曲して延びている。この弾性変形部５４ｂが下方向に弾性変形するようになっている。   The spring 54 is disposed on the upper surface of the fin 53 located at the upper end of the electric heater 5. The spring 54 is for exerting a biasing force so as to compress the heating elements 50 to 52 and the fins 53 held by the frame frame 60 in the stacking direction. As shown in FIG. 4, the spring 54 includes a base 54a extending in the left-right direction along the upper surface of the fin 53, and an elastic deformation 54b extending from the edge of the base 54a downstream of the air flow direction. It is comprised and the whole is comprised with the metal material which has elasticity. The elastically deformable portion 54b extends upward from the substrate portion 54a and on the upstream side in the flow direction of the air conditioning air, and then its distal end side is bent and extends downward. The elastically deformable portion 54b is elastically deformed downward.

図３に示すように、枠型フレーム６０は、空調用空気の流れ方向上流側に配置される上流側部材７０と、下流側に配置される下流側部材８０とを有しており、これら上流側部材７０及び下流側部材８０が組み合わされて構成されている。上流側部材７０は、発熱体５０〜５２及びフィン５３の積層方向両側にそれぞれ位置する上辺部（第１辺部）７１及び下辺部（第２辺部）７２と、上辺部７１から下辺部７２まで延び、上辺部７１と下辺部７２とを繋ぐ複数の棒状部（繋ぎ部）７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃとを有しており、上辺部７１、下辺部７２、棒状部７４Ｃ、７５Ｃによって略矩形の枠型となっている。上辺部７１と、下辺部７２と、棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃとは樹脂材によって一体成形されている。   As shown in FIG. 3, the frame 60 has an upstream member 70 disposed on the upstream side in the flow direction of the air conditioning air, and a downstream member 80 disposed on the downstream side. The side member 70 and the downstream side member 80 are combined and configured. The upstream side member 70 includes upper side portions (first side portions) 71 and lower side portions (second side portions) 72 positioned on both sides in the stacking direction of the heat generating members 50 to 52 and the fins 53, and upper side portions 71 to lower side portions 72. It has a plurality of rod-like parts (connection parts) 73, 74A to 74C, 75A to 75C which extend up to and connect the upper side 71 and the lower side 72, and the upper side 71, the lower side 72, and the rod-like parts 74C, 75C. Is a substantially rectangular frame shape. The upper side 71, the lower side 72, and the rod-like portions 73, 74A to 74C, 75A to 75C are integrally formed of a resin material.

上辺部７１は、左右方向に延びている。図４に示すように、上辺部７１の下面にバネ５４の弾性変形部５４ｂが接触するようになっている。図３に示すように、上辺部７１の右端部及び左端部には、空調用空気の流れ方向上流側へ突出する突起７１ａがそれぞれ設けられている。また、上辺部７１の右端部及び左端部には、下方へ突出する縦板部７１ｂがそれぞれ設けられている。左右の縦板部７１ｂ、７１ｂの間に上端部のフィン５３が配置されるようになっている。また、上辺部７１には、下流側へ突出する係合爪（図示せず）が設けられている。   The upper side portion 71 extends in the left-right direction. As shown in FIG. 4, the elastically deformable portion 54 b of the spring 54 is in contact with the lower surface of the upper side portion 71. As shown in FIG. 3, protrusions 71 a are provided at the right end and the left end of the upper side portion 71 so as to project to the upstream side in the flow direction of the air for air conditioning. Further, at the right end and the left end of the upper side portion 71, vertical plate portions 71b protruding downward are respectively provided. Fins 53 at the upper end portion are arranged between the left and right vertical plate portions 71 b and 71 b. Further, the upper side portion 71 is provided with an engaging claw (not shown) which protrudes to the downstream side.

下辺部７２は上辺部７１と略平行である。下辺部７２の上面に、下端部のフィン５３の下面が接触するようになっている。下辺部７２の右端部及び左端部には、空調用空気の流れ方向上流側へ突出する突起７２ａがそれぞれ設けられている。また、下辺部７２の右端部及び左端部には、上方へ突出する縦板部７２ｂがそれぞれ設けられている。左右の縦板部７２ｂ、７２ｂの間に下端部のフィン５３が配置されるようになっている。下辺部７２の下面には、切欠部７２ｃが形成されている。   The lower side 72 is substantially parallel to the upper side 71. The lower surface of the lower end fin 53 is in contact with the upper surface of the lower side portion 72. At the right end portion and the left end portion of the lower side portion 72, protrusions 72a that protrude toward the upstream side in the flow direction of the air for air conditioning are provided. Further, at the right end and the left end of the lower side portion 72, vertical plate portions 72b protruding upward are respectively provided. Fins 53 at the lower end portion are arranged between the left and right vertical plate portions 72b, 72b. A cutout 72 c is formed on the lower surface of the lower side portion 72.

上辺部７１と下辺部７２とは、棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃによって繋がれていることで間隔が一定に保たれている。上辺部７１と下辺部７２との間に、発熱体５０〜５２、フィン５３、バネ５４及び板材５５が収容されて積層方向に圧縮されている。   The upper side portion 71 and the lower side portion 72 are connected by the rod-like portions 73, 74A to 74C, 75A to 75C so that the distance is kept constant. Between the upper side portion 71 and the lower side portion 72, the heating elements 50 to 52, the fins 53, the springs 54 and the plate member 55 are accommodated and compressed in the stacking direction.

棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃは、上辺部７１及び下辺部７２の長手方向に間隔をあけて配置されている。すなわち、上流側部材７０の幅方向（左右方向）中央部には、中央棒状部７３が配置されている。上流側部材７０の中央棒状部７３よりも右側には、第１右側棒状部７４Ａが配置され、この第１右側棒状部７４Ａよりも右側には第２右側棒状部７４Ｂが配置され、この第２右側棒状部７４Ｂよりも右側には第３右側棒状部７４Ｃが配置されている。また、上流側部材７０の中央棒状部７３よりも左側には、第１左側棒状部７５Ａが配置され、この第１左側棒状部７５Ａよりも左側には第２左側棒状部７５Ｂが配置され、この第２左側棒状部７５Ｂよりも左側には第３左側棒状部７５Ｃが配置されている。   The rod-like portions 73, 74A to 74C, 75A to 75C are arranged at intervals in the longitudinal direction of the upper side portion 71 and the lower side portion 72. That is, the central rod portion 73 is disposed at the central portion in the width direction (left and right direction) of the upstream side member 70. A first right rod portion 74A is disposed on the right side of the central rod portion 73 of the upstream member 70, and a second right rod portion 74B is disposed on the right side of the first right rod portion 74A. The third right rod portion 74C is disposed on the right side of the right rod portion 74B. Further, the first left rod portion 75A is disposed on the left side of the central rod portion 73 of the upstream side member 70, and the second left rod portion 75B is disposed on the left side of the first left rod portion 75A. The third left rod portion 75C is disposed on the left side of the second left rod portion 75B.

中央棒状部７３、第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃは、発熱体５０〜５２、フィン５３及びバネ５４よりも空調用空気の流れ方向上流側に配置されている。中央棒状部７３、第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃにより、発熱体５０〜５２、フィン５３及びバネ５４が上流側から支持される。   The central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C are upstream of the heating members 50 to 52, the fins 53, and the springs 54 in the flow direction of the air for air conditioning. It is arranged on the side. The heating elements 50 to 52, the fins 53 and the springs 54 are supported from the upstream side by the central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C.

中央棒状部７３は、上辺部７１及び下辺部７２に対して垂直に延びている。また、第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃは、中央棒状部７３と平行である。中央棒状部７３、第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃの太さは上辺部７１及び下辺部７２の太さよりも細く設定されており、中央棒状部７３、第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃが空調用空気の流れを阻害する度合いを小さくしている。   The central rod portion 73 extends perpendicularly to the upper side 71 and the lower side 72. In addition, the first to third right side rod portions 74A to 74C and the first to third left side rod portions 75A to 75C are parallel to the central rod portion 73. The thickness of the central rod portion 73, the first to third right rod portions 74A to 74C, and the first to third left rod portions 75A to 75C is set smaller than the thickness of the upper side portion 71 and the lower side portion 72. The degree to which the bar-like portion 73, the first to third right-hand bars 74A to 74C, and the first to third left-hand bars 75A to 75C block the flow of the air for air conditioning is reduced.

図２に示すように、中央棒状部７３の中心線をＸ１、第１右側棒状部７４Ａの中心線をＸ２、第２右側棒状部７４Ｂの中心線をＸ３、第３右側棒状部７４Ｃの中心線をＸ４、第１左側棒状部７５Ａの中心線をＸ５、第２左側棒状部７５Ｂの中心線をＸ６、第３左側棒状部７５Ｃの中心線をＸ７としたとき、中心線Ｘ１と中心線Ｘ２との離間寸法Ａ１と、中心線Ｘ１と中心線Ｘ５との離間寸法Ａ２とは等しく設定され、また、中心線Ｘ２と中心線Ｘ３との離間寸法Ｂ１と、中心線Ｘ５と中心線Ｘ６との離間寸法Ｂ２とは等しく設定され、中心線Ｘ３と中心線Ｘ４との離間寸法Ｃ１と、中心線Ｘ６と中心線Ｘ７との離間寸法Ｃ２とは等しく設定されている。また、離間寸法Ｃ１、Ｃ２は離間寸法Ｂ１、Ｂ２よりも広く、離間寸法Ｂ１、Ｂ２は離間寸法Ａ１、Ａ２よりも広く設定されている。つまり、隣合う棒状部７４Ｂ、７４Ｃの間隔及び棒状部７５Ｂ、７５Ｃの間隔が最も広く、隣合う棒状部７３、７４Ａの間隔及び棒状部７３、７５Ａの間隔が最も狭くなっている。そして、隣合う棒状部７４Ａ、７４Ｂの間隔及び棒状部７５Ａ、７５Ｂの間隔は、棒状部７４Ｂ、７４Ｃの間隔よりも狭く、かつ、棒状部７３、７４Ａの間隔よりも広くなっている。これにより、隣合う棒状部７３、７４Ａの間隔、隣合う棒状部７４Ａ、７４Ｂの間隔、隣合う棒状部７４Ｂ、７４Ｃの間隔を比べたとき、上辺部７１及び下辺部７２の長手方向中央部に位置する棒状部７３、７４Ａの間隔よりも、上辺部７１及び下辺部７２の端部側に位置する棒状部７４Ｂ、７４Ｃ（７５Ｂ、７５Ｃ）の間隔の方が広くなる。   As shown in FIG. 2, the central line of the central rod 73 is X1, the central line of the first right rod 74A is X2, the central line of the second right rod 74B is X3, and the central line of the third right rod 74C. When the center line of the first left rod portion 75A is X5, the center line of the second left rod portion 75B is X6, and the center line of the third left rod portion 75C is X7, the center line X1 and the center line X2 are And the separation dimension A2 between the center line X1 and the center line X5 are set equal, and the separation dimension B1 between the center line X2 and the center line X3 and the separation between the center line X5 and the center line X6 The dimension B2 is set equal, and the separation dimension C1 between the center line X3 and the center line X4 and the separation dimension C2 between the center line X6 and the center line X7 are set equal. Further, the separation dimensions C1 and C2 are wider than the separation dimensions B1 and B2, and the separation dimensions B1 and B2 are set wider than the separation dimensions A1 and A2. That is, the distance between the adjacent rod portions 74B and 74C and the distance between the rod portions 75B and 75C are the widest, and the distance between the adjacent rod portions 73 and 74A and the distance between the rod portions 73 and 75A are the narrowest. The distance between the adjacent rod-like parts 74A and 74B and the distance between the rod-like parts 75A and 75B are narrower than the distance between the rod-like parts 74B and 74C and wider than the distance between the rod-like parts 73 and 74A. As a result, when the distance between the adjacent rod-like parts 73 and 74A, the distance between the adjacent rod-like parts 74A and 74B, and the distance between the adjacent rod-like parts 74B and 74C are compared, the longitudinal central part of the upper side 71 and the lower side 72 The distance between the rod-like parts 74B and 74C (75B and 75C) located on the end side of the upper side 71 and the lower side 72 is larger than the distance between the rod-like parts 73 and 74A located.

また、図３に示すように、下流側部材８０は上流側部材７０と同様に構成されている。すなわち、上辺部８１、下辺部８２、中央棒状部８３、第１〜第３右側棒状部８４Ａ〜８４Ｃ及び第１〜第３左側棒状部８５Ａ〜８５Ｃを備えている。上流側部材７０と同様に、上辺部８１には縦板部８１ｂが設けられ、下辺部８２には縦板部８２ｂが設けられている。   Further, as shown in FIG. 3, the downstream side member 80 is configured in the same manner as the upstream side member 70. That is, the upper side 81, the lower side 82, the central rod portion 83, the first to third right rod portions 84A to 84C, and the first to third left rod portions 85A to 85C. Similar to the upstream side member 70, the upper side portion 81 is provided with a vertical plate portion 81b, and the lower side portion 82 is provided with a vertical plate portion 82b.

空調用空気の流れ方向に見たとき、上流側部材７０の上辺部７１と下流側部材８０の上辺部８１とが重なり、上流側部材７０の下辺部７２と下流側部材８０の下辺部８２とが重なる。上流側部材７０の上辺部７１に設けられた係合爪が、下流側部材８０の上辺部８１に設けられた切欠部８１ｃの周縁部に係合し、また、下流側部材８０の下辺部８２に設けられた係合爪８２ｃが、上流側部材７０の下辺部７２に設けられた切欠部７２ｃの周縁部に係合するようになっている。これにより、上流側部材７０と下流側部材８０とが一体化する。このとき、図４に示すように、上流側部材７０の上辺部７１における空調用空気の流れ方向下流側の面と、下流側部材８０の上辺部８１における上流側の面とは接触し、また、図示しないが、上流側部材７０の下辺部７２における空調用空気の流れ方向下流側の面と、下流側部材８０の下辺部８２における上流側の面とは接触している。   When viewed in the flow direction of the air conditioning air, the upper side 71 of the upstream side member 70 and the upper side 81 of the downstream side member 80 overlap, and the lower side 72 of the upstream side member 70 and the lower side 82 of the downstream side member 80 Overlap. The engagement claws provided on the upper side 71 of the upstream side member 70 engage with the peripheral edge of the notch 81 c provided on the upper side 81 of the downstream side member 80, and the lower side 82 of the downstream side member 80. An engaging claw 82c provided on the lower end 72 of the upstream side member 70 is engaged with the peripheral edge of a notch 72c provided on the lower side 72. Thereby, the upstream side member 70 and the downstream side member 80 are integrated. At this time, as shown in FIG. 4, the surface of the upper side 71 of the upstream member 70 in the flow direction downstream of the air for air conditioning contacts the surface of the upper side 81 of the downstream member 80 on the upstream side. Although not shown, the surface of the lower side portion 72 of the upstream side member 70 in the flow direction downstream side of the air for air conditioning contacts the upstream side surface of the lower side portion 82 of the downstream side member 80.

また、上流側部材７０と下流側部材８０とが一体化した状態では、空調用空気の流れ方向に見たとき、上流側部材７０の中央棒状部７３、第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃと、下流側部材８０の中央棒状部８３、第１〜第３右側棒状部８４Ａ〜８４Ｃ及び第１〜第３左側棒状部８５Ａ〜８５Ｃとがそれぞれ重なる。   Further, in a state in which the upstream side member 70 and the downstream side member 80 are integrated, when viewed in the flow direction of the air conditioning air, the central rod portion 73 of the upstream member 70 and the first to third right rod portions 74A to 74C and the first to third left rod portions 75A to 75C, the central rod portion 83 of the downstream side member 80, the first to third right rod portions 84A to 84C, and the first to third left rod portions 85A to 85C. Overlap each other.

枠型フレーム６０の右側には、上辺部７１、８１及び下辺部７２、８２の右端部を覆う右側キャップ部材６１が設けられている。右側キャップ部材６１は、上辺部７１、８１及び下辺部７２、８２の右端部に嵌合することによって枠型フレーム６０に着脱可能に取り付けられている。右側キャップ部材６１の左側には、上辺部７１、８１及び下辺部７２、８２の右端部が挿入された状態で嵌合する嵌合筒部６１ａが設けられている。嵌合筒部６１ａの周壁部には、枠型フレーム６０の突起７１ａ、７２ａが係合する係合孔６１ｄが形成されている。嵌合筒部６１ａの右側にはフランジ６１ｂが形成されている。さらに、フランジ６１ｂには、電極板挿入筒部６１ｃが右側へ突出するように設けられている。電極板５０ａ、５１ａ、５２ｂは、嵌合筒部６１ａに挿入された状態でフランジ６１ｂを貫通して電極板挿入筒部６１ｃの内部に配置される。電極板５０ａ、５１ａ、５２ｂには、図示しないが車両側から延びる電力供給配線が接続されるようになっている。   A right side cap member 61 is provided on the right side of the frame 60 to cover the right ends of the upper sides 71 and 81 and the lower sides 72 and 82. The right cap member 61 is detachably attached to the frame frame 60 by being fitted to the right ends of the upper side portions 71 and 81 and the lower side portions 72 and 82. On the left side of the right side cap member 61, a fitting cylindrical portion 61a is provided in which the right ends of the upper side portions 71 and 81 and the lower side portions 72 and 82 are inserted and fitted. In the peripheral wall portion of the fitting cylindrical portion 61a, an engagement hole 61d with which the protrusions 71a and 72a of the frame 60 are engaged is formed. A flange 61b is formed on the right side of the fitting cylindrical portion 61a. Further, an electrode plate insertion cylindrical portion 61c is provided on the flange 61b so as to protrude to the right. The electrode plates 50a, 51a, 52b penetrate the flange 61b in a state of being inserted into the fitting cylindrical portion 61a and are disposed inside the electrode plate insertion cylindrical portion 61c. Although not shown, power supply wirings extending from the vehicle side are connected to the electrode plates 50a, 51a, 52b.

枠型フレーム６０の左側には、上辺部７１、８１及び下辺部７２、８２の左端部を覆う左側キャップ部材６２が設けられている。左側キャップ部材６２は、上辺部７１、８１及び下辺部７２、８２の左端部に嵌合することによって枠型フレーム６０に着脱可能に取り付けられている。右側キャップ部材６１は、上辺部７１、８１及び下辺部７２、８２の左端部が挿入された状態で嵌合する嵌合筒部６１ａが設けられている。嵌合筒部６１ａの周壁部には、枠型フレーム６０の突起７１ａ、７２ａが係合する係合孔６２ｃが形成されている。   On the left side of the frame 60, a left cap member 62 is provided which covers the left ends of the upper side portions 71 and 81 and the lower side portions 72 and 82. The left cap member 62 is detachably attached to the frame frame 60 by being fitted to the left ends of the upper sides 71 and 81 and the lower sides 72 and 82. The right side cap member 61 is provided with a fitting cylindrical portion 61 a which is fitted in a state in which the left end portions of the upper side portions 71 and 81 and the lower side portions 72 and 82 are inserted. In the peripheral wall portion of the fitting cylindrical portion 61a, an engagement hole 62c with which the protrusions 71a and 72a of the frame 60 are engaged is formed.

次に、上記のように構成された電気式ヒータ５の組み立て要領について説明する。まず、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５を積層し、上流側部材７０の内部に収容する。そして、バネ５４を弾性変形させながら上端部のフィン５３の上面と上辺部７１の下面との間に挿入する。これにより、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５に圧縮力が作用する。その後、下流側部材８０を上流側部材７０に組み付けて一体化すると、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５及びバネ５４が枠型フレーム６０の内部に収容される。尚、上部発熱体５０、中央部発熱体５１、下部発熱体５２、フィン５３、板材５５を積層し、下流側部材８０の内部に収容した後、上流側部材７０を下流側部材８０に組み付けて一体化してもよい。   Next, an assembly procedure of the electric heater 5 configured as described above will be described. First, the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate 55 are stacked and accommodated in the upstream member 70. Then, the spring 54 is inserted between the upper surface of the fin 53 at the upper end and the lower surface of the upper side 71 while elastically deforming the spring 54. Thereby, a compressive force acts on the upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate 55. Thereafter, when the downstream side member 80 is assembled to the upstream side member 70 and integrated, the upper heating body 50, the central heating body 51, the lower heating body 52, the fins 53, the plate 55 and the spring 54 Be housed. The upper heating element 50, the central heating element 51, the lower heating element 52, the fins 53, and the plate 55 are stacked and accommodated in the downstream member 80, and then the upstream member 70 is assembled to the downstream member 80. It may be integrated.

次に、以上のようにして得られた電気式ヒータ５を使用する場合について説明する。バネ５４による反発力は、枠型フレーム６０の上流側部材７０の上辺部７１と下辺部７２に対して上辺部７１及び下辺部７２を開くように作用する。同様に、バネ５４の反発力は、枠型フレーム６０の下流側部材８０の上辺部８１と下辺部８２に対して上辺部８１及び下辺部８２を開くように作用する。このとき、上流側部材７０の上辺部７１と下辺部７２が複数の棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃによって繋がれているので、バネ５４による反発力に抗するように上辺部７１と下辺部７２との開きが抑制される。同様に、下流側部材８０の上辺部８１と下辺部８２の開きも抑制される。   Next, the case where the electric heater 5 obtained as described above is used will be described. The repulsive force of the spring 54 acts on the upper side 71 and the lower side 72 of the upstream side member 70 of the frame 60 to open the upper side 71 and the lower side 72. Similarly, the repulsive force of the spring 54 acts on the upper side 81 and the lower side 82 of the downstream side member 80 of the frame 60 to open the upper side 81 and the lower side 82. At this time, since the upper side 71 and the lower side 72 of the upstream side member 70 are connected by the plurality of rod-like portions 73, 74A to 74C, 75A to 75C, the upper side 71 and the upper side 71 The opening with the lower side 72 is suppressed. Similarly, the opening between the upper side 81 and the lower side 82 of the downstream side member 80 is also suppressed.

枠型フレーム６０の上辺部７１、８１及び下辺部７２、８２にかかる撓み力は、左右方向中央部に近づくほど大きくなる一方、端部に近づくほど小さくなっている。この実施形態では、棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃの間隔、及び棒状部８３、８４Ａ〜８４Ｃ、８５Ａ〜８５Ｃの間隔が、上辺部７１、８１及び下辺部７２、８２の左右方向中央部に位置するものよりも端部側に位置するものの方が広くなっている。このため、上辺部７１、８１及び下辺部７２、８２にかかる撓み力が大きい中央寄りの部分では棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃ、８３、８４Ａ〜８４Ｃ、８５Ａ〜８５Ｃが密になり、撓み力が小さい端部寄りの部分では棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃ、８３、８４Ａ〜８４Ｃ、８５Ａ〜８５Ｃが比較的密でなくなる。したがって、複数の棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃ、８３、８４Ａ〜８４Ｃ、８５Ａ〜８５Ｃによって枠型フレーム６０の変形を効果的に抑制しながら、棒状部７３、７４Ａ〜７４Ｃ、７５Ａ〜７５Ｃ、８３、８４Ａ〜８４Ｃ、８５Ａ〜８５Ｃの数を減らして空気の流通抵抗を減少させることができる。   The bending force applied to the upper side portions 71 and 81 and the lower side portions 72 and 82 of the frame 60 becomes larger as it gets closer to the center in the left-right direction, and becomes smaller as it gets closer to the end. In this embodiment, the intervals of the rod-like parts 73, 74A to 74C, 75A to 75C, and the intervals of the rod-like parts 83, 84A to 84C, 85A to 85C are the center of the upper side 71, 81 and the lower side 72, 82 in the lateral direction. Those located on the end side are wider than those located on the part. For this reason, the rod-like portions 73, 74A to 74C, 75A to 75C, 83, 84A to 84C, 85A to 85C become dense at portions near the center where the bending forces applied to the upper side portions 71, 81 and the lower side portions 72, 82 are large. The rod-like portions 73, 74A to 74C, 75A to 75C, 83, 84A to 84C, 85A to 85C are not relatively dense in the portion near the end where the bending force is small. Therefore, while effectively suppressing deformation of the frame 60 by the plurality of rod portions 73, 74A to 74C, 75A to 75C, 83, 84A to 84C, 85A to 85C, the rod portions 73, 74A to 74C, 75A to 75C The number of 75C, 83, 84A to 84C, 85A to 85C can be reduced to reduce the flow resistance of air.

また、右側及び左側キャップ部材６１、６２を上辺部７１、８１及び下辺部７２、８２の右端部及び左端部にそれぞれ嵌合させることで、上辺部７１、８１及び下辺部７２、８２の開きを右側及び左側キャップ部材６１、６２によっても抑制することができる。   Further, by fitting the right and left cap members 61 and 62 to the right end and left end of the upper side portions 71 and 81 and the lower side portions 72 and 82, respectively, opening of the upper side portions 71 and 81 and the lower side portions 72 and 82 can be performed. This can also be suppressed by the right and left cap members 61 and 62.

尚、実施形態１では、上流側部材７０及び下流側部材８０の棒状部の数を７本にしているが、これに限らず、６本以下にしてもよいし、８本以上にしてもよい。また、上流側部材７０及び下流側部材８０の棒状部の数は同じにしてもよいし、異なる数にしてもよい。   In the first embodiment, the number of rod-like portions of the upstream side member 70 and the downstream side member 80 is seven. However, the number is not limited to seven, and may be six or less, or eight or more. . Further, the number of rod-like portions of the upstream side member 70 and the downstream side member 80 may be the same or different.

（実施形態２）
図５及び図６は、本発明の実施形態２に係る電気式ヒータ５を示すものである。実施形態２では、実施形態１のものに対し、上流側部材７０の棒状部の本数及び形状と、下流側部材８０の棒状部の本数及び形状が異なっているだけであり、他の部分は実施形態１と同じであるため、以下、実施形態１と同じ部分には同じ符号を付して説明を省略し、異なる部分について説明する。 Second Embodiment
5 and 6 show an electric heater 5 according to Embodiment 2 of the present invention. The second embodiment is different from the first embodiment only in the number and shape of rod-like portions of the upstream side member 70 and the number and shape of rod-like portions of the downstream side member 80, and the other portions are implemented. The configuration is the same as that of the first embodiment, and hence the same parts as those of the first embodiment are given the same reference numerals and explanations thereof will be omitted, and only different parts will be described.

上流側部材７０においては、中央棒状部が省略され、第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃが設けられている。第１右側棒状部７４Ａは、上側へ行くほど右側に位置するように上辺部７１及び下辺部７２に対して傾斜して延びている。また、第２右側棒状部７４Ｂは、上側へ行くほど左側に位置するように傾斜している。また、第３右側棒状部７４Ｃは、上側へ行くほど右側に位置するように傾斜している。   In the upstream side member 70, the central rod portion is omitted, and first to third right rod portions 74A to 74C and first to third left rod portions 75A to 75C are provided. The first right rod portion 74A extends obliquely with respect to the upper side portion 71 and the lower side portion 72 so as to be positioned on the right side as going to the upper side. In addition, the second right rod-like portion 74B is inclined so as to be positioned on the left side as it goes upward. Further, the third right rod portion 74C is inclined to be positioned on the right side as it goes upward.

第１左側棒状部７５Ａは、上側へ行くほど左側に位置するように上辺部７１及び下辺部７２に対して傾斜して延びている。また、第２左側棒状部７５Ｂは、上側へ行くほど右側に位置するように傾斜している。また、第３左側棒状部７５Ｃは、上側へ行くほど左側に位置するように傾斜している。   The first left rod-like portion 75A extends obliquely with respect to the upper side portion 71 and the lower side portion 72 so as to be positioned on the left side as going to the upper side. In addition, the second left rod-like portion 75B is inclined to be positioned on the right side as it goes upward. Further, the third left rod-like portion 75C is inclined to be positioned on the left side as it goes upward.

第１右側棒状部７４Ａの上端部と、第１左側棒状部７５Ａの上端部との離間寸法をＹ１、第１左側棒状部７５Ａの下端部と、第２左側棒状部７５Ｂの下端部との離間寸法をＹ２、第１右側棒状部７４Ａの下端部と、第２右側棒状部７４Ｂの下端部との離間寸法をＹ３、第２右側棒状部７４Ｂの上端部と、第３右側棒状部７４Ｃの上端部との離間寸法をＹ４、第２左側棒状部７５Ｂの上端部と、第３左側棒状部７５Ｃの上端部との離間寸法をＹ５としたとき、離間寸法Ｙ２と離間寸法Ｙ３は等しく設定され、また、離間寸法Ｙ４と離間寸法Ｙ５も等しく設定されている。離間寸法Ｙ１が最も短く設定され、離間寸法Ｙ２、Ｙ３は、離間寸法Ｙ１よりも広く設定され、離間寸法Ｙ４、Ｙ５は、離間寸法Ｙ２、Ｙ３よりも広く設定されている。これにより、隣合う棒状部７４Ａ、７５Ａの上端部の間隔、隣合う棒状部７４Ｂ、７４Ｃの上端部の間隔、隣合う棒状部７５Ｂ、７５Ｃの上端部の間隔を比較したとき、上辺部７１及び下辺部７２の長手方向中央部に位置する棒状部７４Ａ、７５Ａの上端部の間隔よりも端部側に位置する棒状部７４Ｂ、７４Ｃの上端部の間隔及び棒状部７５Ｂ、７５Ｃの上端部の間隔の方が広くなる。   The distance between the upper end of the first right rod portion 74A and the upper end of the first left rod portion 75A is Y1, the lower end of the first left rod portion 75A, and the lower end of the second left rod portion 75B. The dimension is Y2, the separation dimension between the lower end of the first right rod portion 74A and the lower end of the second right rod portion 74B is Y3, the upper end of the second right rod portion 74B, and the upper end of the third right rod portion 74C The separation dimension Y2 is set equal to the separation dimension Y3, where Y4 is the separation dimension from the portion, Y5 is the separation dimension between the upper end portion of the second left rod portion 75B, and the upper end portion of the third left rod portion 75C. Further, the separation dimension Y4 and the separation dimension Y5 are also set equal. The separation dimension Y1 is set to be the shortest, the separation dimensions Y2 and Y3 are set to be wider than the separation dimension Y1, and the separation dimensions Y4 and Y5 are set to be larger than the separation dimensions Y2 and Y3. As a result, when comparing the distance between the upper ends of adjacent rod-like parts 74A and 75A, the distance between the upper ends of adjacent rod-like parts 74B and 74C, and the distance between the upper ends of adjacent rod-like parts 75B and 75C, the upper side 71 and The distance between the upper ends of the rod-like parts 74B and 74C located at the end side of the distance between the upper ends of the rod-like parts 74A and 75A located at the longitudinal center of the lower side 72 and the distance between the upper ends of the rod-like parts 75B and 75C Will be wider.

図６に示すように、下流側部材８０においては、中央棒状部が省略され、第１〜第３右側棒状部８４Ａ〜８４Ｃ及び第１〜第３左側棒状部８５Ａ〜８５Ｃが設けられている。第１右側棒状部８４Ａは、上側へ行くほど左側に位置するように上辺部８１及び下辺部８２に対して傾斜して延びている。また、第２右側棒状部８４Ｂは、上側へ行くほど右側に位置するように傾斜している。また、第３右側棒状部８４Ｃは、上側へ行くほど左側に位置するように傾斜している。   As shown in FIG. 6, in the downstream side member 80, the central rod portion is omitted, and first to third right rod portions 84A to 84C and first to third left rod portions 85A to 85C are provided. The first right rod-like portion 84A extends obliquely with respect to the upper side portion 81 and the lower side portion 82 so as to be positioned on the left side in the upper side. In addition, the second right rod-like portion 84B is inclined to be positioned on the right side as it goes upward. Further, the third right rod-shaped portion 84C is inclined to be positioned on the left side as it goes upward.

第１左側棒状部８５Ａは、上側へ行くほど右側に位置するように上辺部８１及び下辺部８２に対して傾斜して延びている。また、第２左側棒状部８５Ｂは、上側へ行くほど左側に位置するように傾斜している。また、第３左側棒状部８５Ｃは、上側へ行くほど右側に位置するように傾斜している。つまり、下流側の第１〜第３右側棒状部８４Ａ〜８４Ｃ及び第１〜第３左側棒状部８５Ａ〜８５Ｃは、各々に対応する上流側の第１〜第３右側棒状部７４Ａ〜７４Ｃ及び第１〜第３左側棒状部７５Ａ〜７５Ｃとは反対方向に傾斜している。   The first left rod-like portion 85A extends obliquely with respect to the upper side portion 81 and the lower side portion 82 so as to be positioned on the right side as going to the upper side. In addition, the second left rod-like portion 85B is inclined so as to be positioned on the left side as it goes upward. Further, the third left rod-like portion 85C is inclined to be positioned on the right side as it goes upward. That is, the downstream first to third right rod portions 84A to 84C and the first to third left rod portions 85A to 85C correspond to the upstream first to third right rod portions 74A to 74C and the corresponding first The first to third left rod portions 75A to 75C are inclined in the opposite direction.

そして、図５に示すように空調用空気の流れ方向に見たとき、上流側の第１右側棒状部７４Ａの上下方向中間部と、下流側の第１右側棒状部８４Ａの上下方向中間部とが重なるように配置される。また、上流側の第２右側棒状部７４Ｂの上下方向中間部と、下流側の第２右側棒状部８４Ｂの上下方向中間部とが重なるように配置される。また、上流側の第３右側棒状部７４Ｃの上下方向中間部と、下流側の第３右側棒状部８４Ｃの上下方向中間部とが重なるように配置される。   Then, as viewed in the flow direction of the air conditioning air as shown in FIG. 5, the vertical middle portion of the upstream first right rod portion 74A and the vertical middle portion of the downstream first right rod portion 84A. Are arranged so that they overlap. Further, the vertical middle portion of the upstream second right rod portion 74B and the vertical middle portion of the downstream second right rod portion 84B are arranged to overlap. Also, the middle portion in the vertical direction of the third right-side rod portion 74C on the upstream side and the middle portion in the vertical direction of the third right-side rod portion 84C on the downstream side overlap with each other.

さらに、空調用空気の流れ方向に見たとき、上流側の第１左側棒状部７５Ａの上下方向中間部と、下流側の第１左側棒状部８５Ａの上下方向中間部とが重なるように配置される。また、上流側の第２左側棒状部７５Ｂの上下方向中間部と、下流側の第２左側棒状部８５Ｂの上下方向中間部とが重なるように配置される。また、上流側の第３左側棒状部７５Ｃの上下方向中間部と、下流側の第３左側棒状部８５Ｃの上下方向中間部とが重なるように配置される。   Furthermore, when viewed in the flow direction of the air conditioning air, the vertical middle portion of the upstream first left rod portion 75A and the vertical middle portion of the downstream first left rod portion 85A overlap with each other. Ru. Further, the vertical middle portion of the upstream second left rod portion 75B and the vertical middle portion of the downstream second left rod portion 85B are disposed so as to overlap with each other. Further, the middle portion in the vertical direction of the third left rod portion 75C on the upstream side and the middle portion in the vertical direction of the third left rod portion 85C on the downstream side are arranged to overlap.

したがって、実施形態２に係る電気式ヒータ５によれば、実施形態１と同様に、枠型フレーム６０の変形を抑制しながら、空気の流通抵抗を減少させることができる。   Therefore, according to the electric heater 5 according to the second embodiment, as in the first embodiment, the flow resistance of air can be reduced while suppressing the deformation of the frame 60.

また、空調用空気の流れ方向に見たとき、上流側の第１左側棒状部７５Ａと、下流側の第１左側棒状部８５ＡとがＸ字状に交差し、上流側の第２左側棒状部７５Ｂと、下流側の第２左側棒状部８５ＢとがＸ字状に交差し、上流側の第３左側棒状部７５Ｃと、下流側の第３左側棒状部８５ＣとがＸ字状に交差しているので、枠型フレーム６０の強度が高まって枠型フレーム６０の変形抑制効果をより一層向上させることができる。   Further, when viewed in the flow direction of the air conditioning air, the upstream first left rod portion 75A and the downstream first left rod portion 85A intersect in an X shape, and the upstream second left rod portion 75B intersects the downstream second left rod portion 85B in an X shape, and the upstream third left rod portion 75C intersects the downstream third left rod portion 85C in an X shape Therefore, the strength of the frame-shaped frame 60 is increased, and the deformation suppressing effect of the frame-shaped frame 60 can be further improved.

尚、実施形態２では、上流側部材７０及び下流側部材８０の棒状部の数を６本にしているが、これに限らず、５本以下にしてもよいし、７本以上にしてもよい。また、上流側部材７０及び下流側部材８０の棒状部の数は同じにしてもよいし、異なる数にしてもよい。   In the second embodiment, the number of rod-like portions of the upstream side member 70 and the downstream side member 80 is six, but the number is not limited to this, and may be five or less, or seven or more. . Further, the number of rod-like portions of the upstream side member 70 and the downstream side member 80 may be the same or different.

上述の実施形態はあらゆる点で単なる例示に過ぎず、限定的に解釈してはならない。さらに、特許請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。   The embodiments described above are merely illustrative in every respect and should not be construed as limiting. Furthermore, all variations and modifications that fall within the equivalent scope of the claims fall within the scope of the present invention.

以上説明したように、本発明に係る車両用空調装置の電気式ヒータは、例えば、空調用空気を加熱する場合に使用することができる。   As described above, the electric heater of the vehicle air conditioner according to the present invention can be used, for example, when heating air for air conditioning.

１ 車両用空調装置
５ 電気式ヒータ
５０〜５２ 発熱体
５３ フィン
５４ バネ（付勢部材）
６０ 枠型フレーム
６１ 右側キャップ部材
６２ 左側キャップ部材
７１ 上辺部（第１辺部）
７２ 下辺部（第２辺部）
７３ 中央棒状部（繋ぎ部）
７４Ａ〜７４Ｃ 第１〜第３右側棒状部（繋ぎ部）
７５Ａ〜７５Ｃ 第１〜第３左側棒状部（繋ぎ部）
８４Ａ〜８４Ｃ 第１〜第３右側棒状部（繋ぎ部）
８５Ａ〜８５Ｃ 第１〜第３左側棒状部（繋ぎ部） 1 Vehicle air conditioner 5 electric heater 50 to 52 heating element 53 fin 54 spring (biasing member)
60 frame type frame 61 right side cap member 62 left side cap member 71 upper side portion (first side portion)
72 lower side (second side)
73 Center rod (joint)
74A to 74C first to third right rod-like parts (connection parts)
75A to 75C first to third left rod-like parts (connection parts)
84A to 84C 1st to 3rd right-side bar-like parts (connection parts)
85A to 85C 1st to 3rd left rod-like parts (connection parts)

Claims (3)

電力の供給によって発熱する発熱体と、
上記発熱体に積層された状態で配設されるフィンと、
上記発熱体及び上記フィンを収容して積層状態で保持する枠型フレームと、
上記枠型フレームに保持された上記発熱体及び上記フィンを積層方向に圧縮するように付勢力を作用させるための付勢部材とを備え、
上記枠型フレームの内部へ送風された空調用空気が上記フィンを通過して加熱される車両用空調装置の電気式ヒータにおいて、
上記枠型フレームは、上記発熱体及び上記フィンの積層方向両側にそれぞれ位置する第１辺部及び第２辺部と、該第１辺部から該第２辺部まで延び、該第１辺部と該第２辺部とを繋ぐ複数の繋ぎ部とを有し、
複数の上記繋ぎ部は、上記第１辺部及び上記第２辺部の長手方向に間隔をあけて配置され、隣合う上記繋ぎ部の間隔は、上記第１辺部及び上記第２辺部の長手方向中央部に位置する上記繋ぎ部の間隔よりも端部側に位置する上記繋ぎ部の間隔の方が広くなるように設定されていることを特徴とする車両用空調装置の電気式ヒータ。 A heating element that generates heat due to the supply of power;
Fins disposed in a state of being stacked on the heating element;
A frame type frame that accommodates the heat generating body and the fins and holds the heat generation body and the fins in a stacked state;
The heating element held by the frame and the biasing member for applying a biasing force to compress the fins in the stacking direction,
In the electric heater of a vehicle air conditioner, air conditioning air blown into the inside of the frame is passed through the fins and heated.
The frame frame extends from the first side to the second side, the first side and the second side positioned respectively on both sides in the stacking direction of the heating element and the fin, and the first side And a plurality of connecting portions connecting the second side and the second side,
The plurality of connecting portions are arranged at intervals in the longitudinal direction of the first side portion and the second side portion, and the distance between the adjacent connecting portions is equal to that of the first side portion and the second side portion. An electric heater of an air conditioning system for a vehicle air conditioner, wherein the distance between the connecting portions located on the end side is larger than the distance between the connecting portions located at the central portion in the longitudinal direction. 請求項１に記載の車両用空調装置の電気式ヒータにおいて、
上記枠型フレームには、上記第１辺部及び上記第２辺部の長手方向の端部を覆うキャップ部材が設けられ、該キャップ部材は、上記第１辺部及び上記第２辺部の長手方向の端部に嵌合していることを特徴とする車両用空調装置の電気式ヒータ。 In the electric heater of the air conditioner for vehicles according to claim 1,
The frame-shaped frame is provided with a cap member for covering an end of the first side and the second side in the longitudinal direction, and the cap member has a length corresponding to the length of the first side and the second side. An electric heater of a vehicle air conditioner characterized in that the end of the direction is fitted. 請求項１または２に記載の車両用空調装置の電気式ヒータにおいて、
上記枠型フレームの上記繋ぎ部は、空調用空気の流れ方向上流側と下流側にそれぞれ設けられ、
上流側の上記繋ぎ部は、上記第１辺部及び上記第２辺部に対して傾斜して延び、
下流側の上記繋ぎ部は、上流側の上記繋ぎ部とは反対方向に傾斜して延びるとともに、空調用空気の流れ方向に見たとき上流側の上記繋ぎ部と少なくとも一部が重なるように配置されていることを特徴とする車両用空調装置の電気式ヒータ。 In the electric heater of the air conditioner for vehicles according to claim 1 or 2,
The connecting portions of the frame are respectively provided on the upstream side and the downstream side in the flow direction of the air for air conditioning,
The upstream connecting portion extends obliquely with respect to the first side portion and the second side portion, and
The downstream side connecting portion extends in a direction opposite to the upstream side connecting portion, and is disposed so that at least a part thereof overlaps with the upstream side connecting portion when viewed in the flow direction of the air conditioning air An electric heater of a vehicle air conditioner characterized in that
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