JP6046546B2 - Power terminal box structure and compressor using the same - Google Patents
Power terminal box structure and compressor using the same Download PDFInfo
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Description
本発明は、電源端子箱本体と電源端子箱蓋とを締結部にて締結する電源端子箱構造及びこれを用いた圧縮機に関する。 The present invention relates to a power terminal box structure that fastens a power terminal box body and a power terminal box lid at a fastening portion, and a compressor using the same.
従来の電源端子箱構造としては、特許文献１が知られている。特許文献１に係る電源端子箱構造について図９、図１０、図１１にて説明する。
図９は電源端子箱蓋を嵌込み式とした圧縮機の構造図である。図９において、１は圧力容器、２は圧縮機構部、３は電動機、４ａは電源端子箱、５ａは電源端子箱本体、６ａは電源端子箱の蓋、７は冷媒の吸入配管、８は圧縮された冷媒の吐出配管、９は電源線、１０は端子接続部である。
Patent Document 1 is known as a conventional power terminal box structure. The power terminal box structure according to Patent Document 1 will be described with reference to FIGS. 9, 10, and 11.
FIG. 9 is a structural diagram of a compressor in which a power terminal box cover is fitted. In FIG. 9, 1 is a pressure vessel, 2 is a compression mechanism, 3 is an electric motor, 4a is a power supply terminal box, 5a is a power supply terminal box body, 6a is a cover of the power supply terminal box, 7 is a refrigerant suction pipe, and 8 is a compression pipe. The refrigerant discharge pipe, 9 is a power line, and 10 is a terminal connection.
圧縮機は、圧力容器１、圧縮機構部２、電動機３で構成され、電動機３に電源を供給する電源線９が接続される端子接続部１０を内部に有する電源端子箱４ａを圧力容器１の外表面に備えている。電源端子箱４ａは電源端子箱本体５ａと電源端子箱の蓋６ａで構成され、電源端子箱の蓋６ａは電源端子箱本体５ａに嵌込みし、防塵防水の機能を果たす。しかし、この構成の場合、電源端子箱の蓋６ａを嵌込み式としているため、電源端子箱の蓋６ａが衝撃などにより外れる虞があり、容易に外れない電源端子箱構造が必要であった。 The compressor is composed of a pressure vessel 1, a compression mechanism portion 2, and an electric motor 3, and includes a power supply terminal box 4 a having a terminal connection portion 10 to which a power supply line 9 for supplying power to the electric motor 3 is connected. Provided on the outer surface. The power terminal box 4a includes a power terminal box main body 5a and a power terminal box cover 6a. The power terminal box cover 6a is fitted into the power terminal box main body 5a to perform a dustproof and waterproof function. However, in this configuration, since the lid 6a of the power terminal box is fitted, the power terminal box lid 6a may come off due to an impact or the like, and a power terminal box structure that cannot be easily removed is required.
容易に電源端子箱の蓋６ａが外れない構造としての例を図１０、図１１にて説明する。図１０は電源端子箱の蓋をねじ締結式とした圧縮機の構造図である。図１１は、図１０に示す圧縮機の電源端子箱４ｂの構造図である。図１０、図１１において、４ｂは電源端子箱、５ｂは電源端子箱本体、６ｂは電源端子箱の蓋で、１１は電源端子箱蓋のねじ、電源端子箱４ｂ以外の構成は図９と同一である。 An example of a structure in which the lid 6a of the power terminal box cannot be easily removed will be described with reference to FIGS. FIG. 10 is a structural diagram of a compressor in which the lid of the power terminal box is a screw fastening type. FIG. 11 is a structural diagram of the power supply terminal box 4b of the compressor shown in FIG. 10 and 11, 4b is a power supply terminal box, 5b is a power supply terminal box body, 6b is a cover of the power supply terminal box, 11 is a screw of the power supply terminal box cover, and the configuration other than the power supply terminal box 4b is the same as FIG. It is.
電源端子箱４ｂは電源端子箱本体５ｂと電源端子箱の蓋６ｂ、電源端子箱蓋のねじ１１で構成されており、電源接続部１０の外周に締結面を有した端子箱本体５ｂと電源端子箱の蓋６ｂを電源端子箱蓋のねじ１１で電源端子箱の蓋６ｂを締結し、容易に電源端子箱の蓋６ｂが外れない構造としている。 The power terminal box 4b includes a power terminal box body 5b, a power terminal box cover 6b, and a power terminal box cover screw 11. The terminal box body 5b having a fastening surface on the outer periphery of the power connection portion 10 and the power terminal The lid 6b of the power terminal box is fastened with the screw 11 of the power terminal box lid, and the lid 6b of the power terminal box is not easily removed.
上記した図１０、１１に示す構成の場合、電源接続部１０の外周に締結面を有するため、電源端子箱４ｂは電源端子箱４ａに対し、大きな構造となるため、より小型な電源端子箱構造とする必要があった。 In the case of the configuration shown in FIGS. 10 and 11, since the power terminal 10b has a fastening surface on the outer periphery of the power connector 10, the power terminal box 4b has a larger structure than the power terminal box 4a. It was necessary to.
そこで本発明は、電源端子箱本体と電源端子箱蓋を締結する電源端子箱構造において、小型で衝撃などにより電源端子箱蓋が外れにくい電源端子箱構造および圧縮機を得ることを目的とする。 Therefore, an object of the present invention is to obtain a power terminal box structure and a compressor that are small and are unlikely to be detached due to an impact or the like in a power terminal box structure that fastens a power terminal box body and a power terminal box cover.
上記課題を解決するために、例えば特許請求の範囲に記載の構成を採用する。
本願は上記課題を解決する手段を複数含んでいるが、その一例を挙げるならば、
「 内部に少なくとも３本の電源線のそれぞれに接続する少なくとも３箇所の接続部を有する電源端子箱本体と、
該電源端子箱本体及び前記接続部を覆う電源端子箱蓋と、を備え、
前記電源端子箱本体の内側に前記電源端子箱蓋と締結するための少なくとも２箇所の締結部が形成され、
前記電源端子箱本体又は前記電源端子箱蓋には前記電源線が挿入される電源線入口部が形成される電源端子箱構造において、
前記３箇所の接続部は、前記電源線入口部に対して最も近い位置に配置される第１接続部と、前記電源線入口部に対して前記第１の接続部よりも遠い位置に配置される第２接続部及び第３接続部とから構成されるとともに、
前記第３接続部は前記第１接続部に対して前記第２接続部と反対側に配置され、
前記２箇所の締結部は、前記第２接続部及び第３接続部よりも前記電源線入口部に近い位置に配置されるとともに前記電源線に対して前記第１接続部を挟むようにそれぞれ反対側に配置され、
前記電源端子箱蓋の側面は正面から前記電源端子箱本体の底面方向に向かうにつれて前記電源端子箱本体の側面から離れるように形成され、
前記電源端子箱蓋を前記電源端子箱本体に被せた状態で、前記電源端子箱蓋の正面の内側表面と前記締結部の外側表面との間に所定の隙間がある場合に、前記２箇所の締結部のさらに外側に位置する前記電源端子箱蓋の側面が前記電源端子箱本体の側面と第１接触部にて接触し、
前記隙間が小さくなるように前記２箇所の締結部により締結を行うことで前記電源端子箱蓋の側面と前記電源端子箱本体の側面との接触点が前記第１接触部から第２接触部に変わり、
前記第２接触部は前記電源端子箱蓋の側面において前記第１接触部より前記電源端子箱蓋の正面側に位置する」ことを特徴とする。
In order to solve the above problems, for example, the configuration described in the claims is adopted.
The present application includes a plurality of means for solving the above problems.
“A power supply terminal box body having at least three connection portions connected to each of at least three power supply lines,
A power terminal box cover that covers the power terminal box body and the connecting portion;
At least two fastening portions for fastening with the power terminal box lid are formed inside the power terminal box body,
In the power supply terminal box structure in which the power supply line inlet portion into which the power supply line is inserted is formed in the power supply terminal box body or the power supply terminal box lid,
The three connection portions are disposed at a position farthest from the first connection portion with respect to the power line entry portion, and a first connection portion disposed at a position closest to the power line entry portion. A second connection portion and a third connection portion ,
The third connecting portion is disposed on the opposite side of the second connecting portion with respect to the first connecting portion ;
The fastening portion of the two locations, opposite each so as to sandwich the first connecting part for the power line while being located closer to the power supply line inlet portion than the second connection portion and the third connecting portion arranged on the side,
The side surface of the power terminal box lid is formed so as to move away from the side surface of the power terminal box body as it goes from the front toward the bottom surface of the power terminal box body.
When there is a predetermined gap between the front inner surface of the power terminal box lid and the outer surface of the fastening portion in a state where the power terminal box lid is put on the power terminal box main body, the two places The side surface of the power terminal box lid located further outside the fastening portion is in contact with the side surface of the power terminal box main body at the first contact portion,
The contact point between the side surface of the power terminal box lid and the side surface of the power terminal box main body is changed from the first contact portion to the second contact portion by performing fastening with the two fastening portions so that the gap becomes small. change,
Said second contact portion is characterized in the power supply terminal box you located on the front side of the lid "that from the first contact portion in the side surface of the power supply terminal box lid.
本発明によれば、電源端子箱本体と電源端子箱蓋を締結する電源端子箱構造において、小型で衝撃などにより電源端子箱蓋が外れにくい電源端子箱構造および圧縮機を得ることが可能となる。
上記した以外の課題、構成及び効果は、以下の実施形態の説明により明らかにされる。
According to the present invention, in the power terminal box structure that fastens the power terminal box body and the power terminal box cover, it is possible to obtain a power terminal box structure and a compressor that are small and are unlikely to be detached due to impact or the like. .
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.
本発明の実施例について以下、図面を用いて説明する。 Embodiments of the present invention will be described below with reference to the drawings.
本発明の実施例１について、以下、図面を用いて説明する。上記したように図９、図１０、図１１に示す電源端子箱構造によれば、電源接続部１０の外周に締結面を有するため、電源端子箱４ｂは電源端子箱４ａに対し、大きな構造となり、また、製造原価上昇に繋がっていた。このため、より小型な電源端子箱構造とする必要があった。そこで、本実施例においては小型で衝撃などにより電源端子箱の蓋が外れにくい電源端子箱構造について説明する。 Embodiment 1 of the present invention will be described below with reference to the drawings. As described above, according to the power supply terminal box structure shown in FIGS. 9, 10, and 11, the power supply terminal box 4b has a larger structure than the power supply terminal box 4a because it has a fastening surface on the outer periphery of the power supply connection portion 10. Moreover, it led to an increase in manufacturing costs. For this reason, it was necessary to use a smaller power terminal box structure. Therefore, in this embodiment, a power terminal box structure that is small and is difficult to remove the cover of the power terminal box due to an impact or the like will be described.
図１は本実施例の電源端子箱の蓋をねじ締結式とした端子箱構造を備えた圧縮機構造図である。図２は、図１に示す圧縮機の電源端子箱４ｃの構造図である。図１、図２において、４ｃは電源端子箱、５ｃは電源端子箱本体、６ｃは電源端子箱の蓋で、１１は電源端子箱蓋のねじ、１２ａは支え板ａ、電源端子箱４ｃ以外の構成は図９と同一である。電源端子箱４ｃは電源端子箱本体５ｃと電源端子箱の蓋６ｃ、電源端子箱蓋のねじ１１、支え板ａ１２ａで構成されている。 FIG. 1 is a structural diagram of a compressor provided with a terminal box structure in which the lid of the power terminal box of the present embodiment is a screw fastening type. FIG. 2 is a structural diagram of the power supply terminal box 4c of the compressor shown in FIG. 1 and 2, 4c is a power supply terminal box, 5c is a power supply terminal box body, 6c is a cover of the power supply terminal box, 11 is a screw of the power supply terminal box cover, 12a is a support plate a, other than the power supply terminal box 4c. The configuration is the same as in FIG. The power terminal box 4c includes a power terminal box body 5c, a power terminal box cover 6c, a power terminal box screw 11 and a support plate a12a.
電源端子箱蓋６ｃは電源接続部１０から１方向に電源線９が配線されるように電源端子箱の蓋６ｃの側面には切り欠きが形成されており、この切り欠きは電源端子箱蓋６ｃの圧力容器の表面側に配置されている。この切り欠きは電源線９が挿入される電源線入口部であり、電源端子箱蓋６ｃに形成されているが、電源端子箱本体５ｃに形成されるようにしてもよい。なおここでは、便宜上、電源端子箱４ｃにおける圧力容器の表面側を底面、図２下図の上側を正面、左右の面を側面、図２上図の上下の面も側面と呼ぶこととする。 The power terminal box cover 6c has a notch formed in the side surface of the power terminal box cover 6c so that the power line 9 is routed in one direction from the power connection portion 10, and this notch is formed in the power terminal box cover 6c. It is arranged on the surface side of the pressure vessel. This notch is a power line inlet portion into which the power line 9 is inserted, and is formed in the power terminal box lid 6c, but may be formed in the power terminal box body 5c. Here, for the sake of convenience, the surface side of the pressure vessel in the power terminal box 4c is referred to as the bottom surface, the upper side in the lower diagram in FIG. 2 is referred to as the front surface, the left and right surfaces are referred to as side surfaces, and the upper and lower surfaces in FIG .
電源線９はＵ相、Ｖ相、Ｗ相の３本で構成されており、それぞれ電源接続部１０、電源端子１３のＵ相、Ｖ相、Ｗ相に電源端子のねじ１４で締結する。つまり、内部に少なくとも３本の電源線（Ｕ相、Ｖ相、Ｗ相）のそれぞれに接続する少なくとも３箇所の接続部（電源端子１３）を有する電源端子箱本体５ｃと、電源端子箱本体５ｃ及び接続部（電源端子１３）を覆う電源端子箱蓋６ｃと、を備える。なお、電源接続部１０はこの少なくとも３箇所の接続部（電源端子１３）を備えて構成される。 The power supply line 9 is composed of three phases of U phase, V phase, and W phase, and is fastened to the U phase, V phase, and W phase of the power supply connection portion 10 and the power supply terminal 13 with screws 14 of the power supply terminal, respectively. That is, the power supply terminal box body 5c having at least three connection portions (power supply terminals 13) connected to each of at least three power supply lines (U phase, V phase, W phase), and the power supply terminal box body 5c. And a power terminal box cover 6c that covers the connecting portion (power terminal 13). The power supply connection unit 10 includes at least three connection units (power supply terminals 13).
支え板ａ１２ａは電源端子箱本体５ｃに取付けられており、電源端子箱本体５ｃと電源端子箱蓋６ｃは支え板ａ１２ａを介し電源端子箱蓋のねじ１１で締結しており、この締結部は電源接続部１０のＷ相の両側に設けている構造としている。つまり、電源端子箱本体５ｃの内側に電源端子箱蓋６ｃと締結するための少なくとも２箇所の締結部が形成されるものである。 The support plate a12a is attached to the power supply terminal box main body 5c, and the power supply terminal box main body 5c and the power supply terminal box cover 6c are fastened with screws 11 of the power supply terminal box cover via the support plate a12a. The structure is provided on both sides of the W phase of the connecting portion 10. That is, at least two fastening portions for fastening with the power terminal box lid 6c are formed inside the power terminal box body 5c.
なお、電源端子本体５ｃと電源端子蓋６ｃの締結部は電源接続部１０のＵ相、Ｖ相の両側に設けていない。より具体的に説明すると、３箇所の接続部（電源端子１３）は、電源線入口部に対して最も近い位置に配置される第１接続部（Ｗ相）と、電源線入口部に対して第１の接続部（Ｗ相）よりも遠い位置に配置される第２接続部（Ｕ相）及び第３接続部（Ｖ相）とから構成される。また第１接続部（Ｗ相）は電源線９の挿入方向に対して最も近い位置に配置される。つまり、第１接続部（Ｗ相）は電源線９の挿入方向で形成される線上に一致する位置にある。 In addition, the fastening part of the power supply terminal main body 5c and the power supply terminal cover 6c is not provided on both sides of the U-phase and V-phase of the power supply connection part 10. More specifically, the three connection portions (power supply terminals 13) are connected to the first connection portion (W phase) disposed at a position closest to the power supply line entrance portion and the power supply line entrance portion. It is comprised from the 2nd connection part (U phase) arrange | positioned in a position far from a 1st connection part (W phase), and a 3rd connection part (V phase). The first connection portion (W phase) is arranged at a position closest to the insertion direction of the power supply line 9. That is, the first connection portion (W phase) is at a position that coincides with the line formed in the insertion direction of the power supply line 9.
第２接続部（Ｕ相）は電源線９の挿入方向に対して第１接続部（Ｗ相）よりも遠い位置に配置される。つまり、第２接続部（Ｕ相）は電源線９の挿入方向で形成される線から離れた位置にある。また、第３接続部（Ｖ相）は電源線９の挿入方向に対して第１接続部（Ｗ相）よりも遠い位置に配置されるとともに電源線９の挿入方向に対して第２接続部（Ｕ相）と反対側に配置される。つまり、第３接続部（Ｖ相）は電源線９の挿入方向で形成される線から離れた位置にあるとともに、この線に対して第２接続部（Ｕ相）と反対側の位置にある。 The second connection portion (U phase) is arranged at a position farther than the first connection portion (W phase) with respect to the insertion direction of the power supply line 9. That is, the second connection portion (U phase) is located away from the line formed in the insertion direction of the power supply line 9. In addition, the third connection portion (V phase) is disposed at a position farther than the first connection portion (W phase) with respect to the insertion direction of the power supply line 9 and the second connection portion with respect to the insertion direction of the power supply line 9. It is arrange | positioned on the opposite side to (U phase). That is, the third connection portion (V phase) is located away from the line formed in the insertion direction of the power supply line 9, and is located on the opposite side of the second connection portion (U phase) with respect to this line. .
そして２箇所のねじ１１による締結部は、第２接続部（Ｕ相）及び第３接続部（Ｖ相）よりも電源線入口部に近い位置に配置されるとともに電源線９の挿入方向に対して第１接続部（Ｗ相）を挟むようにそれぞれ反対側に配置される。このように配置することにより、電源端子本体５ｃの内部スペースを無駄にすることなく有効に利用できるため、より小型な電源端子箱構造とすることが可能となる。また、締結部にて電源端子本体５ｃと電源端子蓋６ｃとの安定した締結を可能とするため、輸送中に衝撃などがあったとしても電源端子箱蓋６ｃが外れにくい電源端子箱構造とすることができる。 And the fastening part by the screw | thread 11 of two places is arrange | positioned in the position near a power line entrance part rather than a 2nd connection part (U phase) and a 3rd connection part (V phase), and with respect to the insertion direction of the power line 9 Are arranged on opposite sides so as to sandwich the first connection part (W phase). By arranging in this way, the internal space of the power supply terminal body 5c can be used effectively without wasting it, so that a more compact power supply terminal box structure can be achieved. Further, in order to enable stable fastening of the power terminal body 5c and the power terminal lid 6c at the fastening portion, a power terminal box structure is provided in which the power terminal box lid 6c does not easily come off even if there is an impact during transportation. be able to.
上記においては電源線入口部を電源端子箱蓋６ｃの底面の切り欠きとしたが、これに限るものではなく穴形状としても同様の効果を得ることができる。また、本実施例は電源端子と電源線を電源接続部介し接続する例としたが、電源接続部を使用しない場合も、同様の効果を得ることが出来る。 In the above description, the power line inlet portion is notched on the bottom surface of the power terminal box lid 6c. However, the present invention is not limited to this, and the same effect can be obtained even if the hole shape is used. In addition, although the present embodiment is an example in which the power supply terminal and the power supply line are connected via the power supply connection portion, the same effect can be obtained even when the power supply connection portion is not used.
また、上記においては２箇所のねじ１１による締結部が電源線９の挿入方向に対して第１接続部（Ｗ相）を挟むようにそれぞれ反対側に配置されると説明したが、このねじ１１による締結部は１箇所のみで合っても十分に電源端子本体５ｃと電源端子蓋６ｃとを固定することが可能である。 In the above description, it has been described that the fastening portions by the two screws 11 are arranged on the opposite sides so as to sandwich the first connection portion (W phase) with respect to the insertion direction of the power supply line 9. Even if the fastening portion is fitted only at one place, the power terminal body 5c and the power terminal lid 6c can be sufficiently fixed.
以下、本発明の実施例２について図面を用いて説明する。なお、実施例１と同様の名称が付いた構成については同じ機能を果たすものであるため、詳細な説明は省略する。
図８は本実施例の電源端子箱蓋の構造を説明するための図である。
また図７は本実施例の電源端子箱蓋のプレス工程を説明するための図である。ここで図８（ｄ）が本実施例を示す電源端子箱蓋２２ｄの構造図を示し、また図７（ｄ）が図８（ｄ）の電源端子箱蓋２２ｄを製作するプレス工程を示す。図７（ａ）（ｂ）（ｃ）は同様に図８（ａ）（ｂ）（ｃ）の電源端子箱の蓋のプレス工程を示す。図７、図８において、９は電源線、１０は端子接続部、２１は、プレス打抜き時に発生するバリである。図８において、２２ａは、図７のプレス工程（ａ）で製造した電源端子箱蓋を示し、それぞれ２２ｂ、２２ｃ、２２ｄは図７のプレス工程（ｂ）、（ｃ）、（ｄ）で製造した電源端子箱蓋を示す。
Embodiment 2 of the present invention will be described below with reference to the drawings. In addition, since the structure with the same name as Example 1 fulfill | performs the same function, detailed description is abbreviate | omitted.
FIG. 8 is a view for explaining the structure of the power terminal box cover of this embodiment.
Moreover, FIG. 7 is a figure for demonstrating the press process of the power supply terminal box cover of a present Example. Here, FIG. 8D shows a structural diagram of the power terminal box lid 22d according to this embodiment, and FIG. 7D shows a pressing process for manufacturing the power terminal box lid 22d of FIG. 8D. FIGS. 7A, 7B, and 7C similarly show the pressing process of the lid of the power terminal box shown in FIGS. 8A, 8B, and 8C. 7 and 8, 9 is a power line, 10 is a terminal connecting portion, and 21 is a burr generated at the time of press punching. In FIG. 8, 22a shows the power terminal box lid manufactured in the pressing step (a) of FIG. 7, and 22b, 22c and 22d are manufactured in the pressing steps (b), (c) and (d) of FIG. The power terminal box cover is shown.
電源端子箱蓋２２ａ、２２ｂ、２２ｃ、２２ｄは電源線９を配線するために電源線入口部が形成されており、本実施例においては電源端子箱蓋２２ｄに示すように、この電源線入口部は電源端子箱蓋２２の一部を内側に折り曲げることにより形成される。なお、図７、８では電源端子箱蓋２２を示しているが、電源端子箱本体の一部を内側に折り曲げることにより電源線入口部を形成するようにしても構わない。 The power supply terminal box covers 22a, 22b, 22c, and 22d are formed with power supply line inlets for wiring the power supply lines 9, and in this embodiment, as shown by the power supply terminal box cover 22d, the power supply line inlets Is formed by bending a part of the power terminal box cover 22 inward. 7 and 8, the power terminal box cover 22 is shown, but the power line inlet portion may be formed by bending a part of the power terminal box body inward.
図７にてプレス工程により形成される電源端子箱蓋２２の製造工程を説明する。図７の上図に示すように電源端子箱蓋２２は鋼板からプレス打抜きを行うことで製造する。このプレス打抜き時にはバリ２１が発生するため、このバリ２１を最終工程にて取るバリ取りを行う、これにより、電源線９とバリ２１による電源線９の損傷を防止している。ここで図７の下図に示すようにプレス工程（ａ）（ｂ）（ｃ）により製造される電源端子箱蓋２２ａ、２２ｂ、２２ｃは、バリ２１により電源線９が損傷する虞がある、あるいはバリ２１がむき出しになるため、作業者が怪我をする虞があるため、このバリ２１を取るバリ取りを最終工程で行う必要があり、これにより電源端子箱蓋２２ａ、２２ｂ、２２ｃが完成する。 The manufacturing process of the power terminal box lid 22 formed by the pressing process will be described with reference to FIG. As shown in the upper diagram of FIG. 7, the power terminal box cover 22 is manufactured by press punching from a steel plate. Since the burr 21 is generated at the time of the press punching, the burr 21 is removed in the final process, thereby preventing the power line 9 and the power line 9 from being damaged by the burr 21. Here, the power terminal box lids 22a, 22b, and 22c manufactured by the pressing steps (a), (b), and (c) as shown in the lower diagram of FIG. Since the burr 21 is exposed, the operator may be injured. Therefore, it is necessary to deburr the burr 21 in the final process, thereby completing the power terminal box lids 22a, 22b, and 22c.
これに対して本実施例のプレス工程（ｄ）により製造される電源端子箱蓋２２ｄは電源線９を配線するための電源端子箱蓋ｄの下面に電源線入口部を設け、これを上面側である内側に折り曲げることにより形成している。これにより、バリ２１は電源線９と干渉しない位置となるため、プレス工程（ａ）（ｂ）（ｃ）では必要であったバリ取り工程を廃止することができ、製造原価を低減することができる。 On the other hand, the power supply terminal box cover 22d manufactured by the pressing step (d) of the present embodiment is provided with a power supply line inlet on the lower surface of the power supply terminal box cover d for wiring the power supply line 9, and this is provided on the upper surface side. It is formed by bending inside. Thereby, since the burr | flash 21 will be in the position which does not interfere with the power supply line 9, the deburring process required in the press process (a) (b) (c) can be abolished, and manufacturing cost can be reduced. it can.
以下、本発明の実施例３について図面を用いて説明する。なお、実施例１、２と同様の名称が付いた構成については同じ機能を果たすものであるため、詳細な説明は省略する。
図２、図３、図４は本実施例の電源端子箱構造を説明するための図であり、図２は本実施例の電源端子箱構造を正面から示した図であり、図３は図２の断面Ａ−Ａを下面から示した図、また図４は図３のＢに示す電源端子箱本体、電源端子箱蓋の側面の詳細図である。
Embodiment 3 of the present invention will be described below with reference to the drawings. In addition, about the structure which attached the name similar to Example 1, 2, since the same function is fulfilled, detailed description is abbreviate | omitted.
2, 3, and 4 are views for explaining the power terminal box structure of the present embodiment. FIG. 2 is a front view of the power terminal box structure of the present embodiment. FIG. FIG. 4 is a detailed view of the side surface of the power terminal box body and the power terminal box lid shown in FIG. 3B.
図２、図３、図４において、５ｃは電源端子箱本体、６ｃは電源端子箱蓋、１１は締結手段であるねじである。上記したように電源端子箱本体５ｃの内側に電源端子箱蓋６ｃと締結するための少なくとも２箇所の締結部を備えており、電源端子箱蓋６ｃのねじ穴にねじ１１をねじ止めすることにより、上記２箇所の締結部がねじ止めされる。１２ａは電源端子箱本体５ｃに取り付けられる支え板であり、この支え板の正面側においてねじを通す穴が形成されて締結部が構成される。 2, 3, and 4, 5 c is a power terminal box body, 6 c is a power terminal box cover, and 11 is a screw that is a fastening means. As described above, the power terminal box body 5c is provided with at least two fastening portions for fastening with the power terminal box lid 6c, and by screwing the screws 11 into the screw holes of the power terminal box lid 6c. The two fastening portions are screwed. Reference numeral 12a denotes a support plate attached to the power terminal box body 5c. A hole through which a screw is passed is formed on the front side of the support plate to constitute a fastening portion.
図４に示すように電源端子箱蓋６ｃの側面（図４の上面）は正面（図４の右面）から電源端子箱本体５ｃの底面方向（図４の左側方向）に向かうにつれて電源端子箱本体５ｃの側面から離れるように形成される。そして図４の上図に示すように、電源端子箱蓋６ｃを電源端子箱本体５ｃに被せた状態で、電源端子箱蓋６ｃの正面の内側表面と支え板１２ａに構成される締結部の外側表面との間に所定の隙間Ｌ（Ｌ＞０）がある場合に、２箇所の締結部のさらに外側（図４の上側）に位置する電源端子箱蓋６ｃの側面が電源端子箱本体５ｃの側面と第１接触部にて接触する。 As shown in FIG. 4, the power terminal box body 6C is located on the side surface (upper surface in FIG. 4) from the front (right side in FIG. 4) toward the bottom surface of the power terminal box body 5c (left side in FIG. 4). It is formed away from the side surface of 5c. Then, as shown in the upper diagram of FIG. 4, with the power terminal box cover 6c covered on the power terminal box body 5c, the outer surface of the fastening portion constituted by the front inner surface of the power terminal box cover 6c and the support plate 12a. When there is a predetermined gap L (L> 0) between the power terminal box main body 5c and the side surface of the power terminal box cover 6c located further outside (upper side in FIG. 4) of the two fastening portions. Contact the side surface at the first contact portion.
次に図４の上図に示すように、隙間Ｌが小さくなるように２箇所の締結部により締結を行うことで電源端子箱蓋６ｃの側面と電源端子箱本体５ｃの側面との接触点が第１接触部から第２接触部に変わる。この第２接触部は電源端子箱蓋６ｃの側面において第１接触部より電源端子箱蓋６ｃの正面側に位置するものである。また、Ｐは電源端子箱蓋６ｃと支え板１２ａに構成される締結部を電源端子箱蓋の正面側からねじ１１で締結する際に発生する荷重、Ｆは支え板１２ａと電源端子箱本体５ｃの固定強度である。このＦとＰの関係がＦ＞Ｐとなる。上記により、電源端子箱本体５ｃと電源端子箱蓋６ｃの隙間を密着させて隙間が無い構造とすることができ、防塵性を得ることができる。 Next, as shown in the upper diagram of FIG. 4, the contact point between the side surface of the power terminal box lid 6c and the side surface of the power terminal box body 5c is secured by fastening with two fastening portions so that the gap L is reduced. The first contact portion changes to the second contact portion. This 2nd contact part is located in the front side of the power terminal box cover 6c rather than the 1st contact part in the side surface of the power terminal box cover 6c. Further, P is a load generated when the fastening portion constituted by the power terminal box cover 6c and the support plate 12a is fastened with the screw 11 from the front side of the power terminal box cover, and F is the support plate 12a and the power terminal box body 5c. The fixed strength. The relationship between F and P is F> P. As described above, the gap between the power supply terminal box body 5c and the power supply terminal box lid 6c can be brought into close contact with each other so that there is no gap and dust resistance can be obtained.
以下、本発明の実施例４について図面を用いて説明する。なお、実施例１、２と同様の名称が付いた構成については同じ機能を果たすものであるため、詳細な説明は省略する。
図２、図３、図５は本実施例の電源端子箱構造を説明するための図であり、図２、３は実施例３と同様であり、図５は図３のＢに示す電源端子箱本体、電源端子箱蓋の側面の詳細図である。
Embodiment 4 of the present invention will be described below with reference to the drawings. In addition, about the structure which attached the name similar to Example 1, 2, since the same function is fulfilled, detailed description is abbreviate | omitted.
2, 3, and 5 are views for explaining the power terminal box structure of the present embodiment. FIGS. 2 and 3 are the same as those in the third embodiment, and FIG. 5 is a power terminal shown in FIG. It is detail drawing of the side surface of a box main body and a power supply terminal box cover.
５ｃは電源端子箱本体、６ｃは電源端子箱蓋、１１は電源端子箱蓋のねじ、１２ｂは支え板、Ｌは支え板ｂ１２ｂ外側表面と電源端子箱の蓋６ｃの締結部内側表面の隙間、δは支え板が弾性変形する際のたわみ、Ｐは電源端子箱の蓋６ｃと支え板ｂ１２ｂを電源端子箱蓋のねじ１１で締結する際に発生する荷重、Ｆは支え板ａ１２ａと電源端子箱本体の固定強度である。 5c is a power terminal box body, 6c is a power terminal box cover, 11 is a screw of the power terminal box cover, 12b is a support plate, L is a gap between the outer surface of the support plate b12b and the inner surface of the fastening portion of the cover 6c of the power terminal box, δ is a deflection when the support plate is elastically deformed, P is a load generated when the power terminal box cover 6c and the support plate b12b are fastened with the screw 11 of the power terminal box cover, and F is a support plate a12a and the power terminal box. The fixing strength of the main body.
電源端子箱の蓋６ｃを電源端子箱本体５ｃに被せた状態で、電源端子箱の蓋６ｃのねじ締結部のさらに外側に、かつ、支え板１２ａよりも外側に形成される電源端子箱の蓋６ｃの側面が第１接触点にて接触し、この時、電源端子箱の蓋６ｃの締結部内側表面と支え板外側表面に所定の隙間Ｌができる。 The lid of the power terminal box formed outside the screw fastening portion of the lid 6c of the power terminal box and outside the support plate 12a with the lid 6c of the power terminal box covered on the power terminal box body 5c. The side surface of 6c contacts at the first contact point, and at this time, a predetermined gap L is formed between the inner surface of the fastening portion of the lid 6c of the power terminal box and the outer surface of the support plate.
この所定の隙間（Ｌ＞０）を電源端子本体５ｃと電源端子の蓋６ｃは支え板ｂ１２ｂを介し電源端子箱蓋のねじ１１で締結する。かつ、支え板ｂはたわみδの弾性変形をする。このため、電源端子本体５ｃと電源端子の蓋６ｃの側面の接触点は第１接触点から第２接触点に支え板と電源端子箱の蓋の隙間Ｌとたわみδの差Ｌ−δ変化する。なお、この時Ｆ＞Ｐとなる。 The power terminal main body 5c and the power terminal lid 6c are fastened with the screw 11 of the power terminal box lid via the support plate b12b through the predetermined gap (L> 0). Further, the support plate b is elastically deformed by a deflection δ. Therefore, the contact point between the side surfaces of the power terminal main body 5c and the power terminal lid 6c changes from the first contact point to the second contact point by the gap L between the support plate and the power terminal box lid and the difference L−δ of the deflection δ. . At this time, F> P.
より具体的に説明すると電源端子箱蓋６ｃの正面の内側表面と向き合う支え板ｂに構成される締結部の外側表面は電源端子箱蓋６ｃの正面の内側表面側（図５の右側）に傾斜するように形成される。このとき、支え板ｂに構成される締結部が弾性変形する部材にて構成されることより、図５下図で示すように、締結部をねじ１１で締結することで電源端子箱蓋６ｃの正面の内側表面側（図５の右側）に傾斜していた締結部が電源端子箱蓋６ｃの正面と一致するため、より隙間が無い構造とすることができ、防塵性を得ることができる。 More specifically, the outer surface of the fastening portion constituted by the support plate b facing the front inner surface of the power terminal box lid 6c is inclined toward the inner surface side (right side in FIG. 5) of the power terminal box lid 6c. To be formed. At this time, since the fastening portion formed on the support plate b is configured by a member that is elastically deformed, the front portion of the power terminal box lid 6c is fastened by fastening the fastening portion with a screw 11 as shown in the lower diagram of FIG. Since the fastening part inclined to the inner surface side (right side in FIG. 5) coincides with the front surface of the power terminal box lid 6c, a structure with no gap can be obtained, and dust resistance can be obtained.
また電源接続部の両側に配置している支え板１２ｂのそれぞれの取付高さの公差幅を広げることができ作業性が改善できる。
なお支え板の形状は図６の支え板ｃ１２ｃでも同様の効果を得ることができる。
Moreover, the tolerance width of each mounting height of the support plate 12b arrange | positioned at the both sides of a power supply connection part can be expanded, and workability | operativity can be improved.
The same effect can be obtained with the support plate c12c shown in FIG.
以上の実施例で説明した電源端子箱構造を圧縮機の圧力容器の表面に取り付けることで、防塵性を確保し、電源端子箱蓋の外れにくい圧縮機を提供することが可能となる。圧縮機は輸送時や作業する際に振動、衝撃が起きることがあり、この場合に電源端子箱蓋が外れる虞があったものであるが、以上の実施例の電源端子箱構造を適用することにより、これを抑制することが可能となる。 By attaching the power terminal box structure described in the above embodiments to the surface of the pressure vessel of the compressor, it is possible to provide a compressor that ensures dust resistance and is difficult to remove the power terminal box lid. The compressor may be vibrated or shocked during transportation or work. In this case, the power terminal box cover may come off, but the power terminal box structure of the above embodiment should be applied. Thus, this can be suppressed.
この圧縮機は圧力容器の内部に冷媒を圧縮する圧縮機構部と、この圧縮機構部を駆動する電動機を収容し、冷媒を圧縮機後部で圧縮した後に吐出配管から吐出することで冷凍サイクルを形成するように用いられる。 This compressor contains a compression mechanism for compressing refrigerant inside the pressure vessel and an electric motor for driving the compression mechanism, and forms a refrigeration cycle by compressing the refrigerant at the rear of the compressor and then discharging it from the discharge pipe. Used to do.
１ 圧力容器
２ 圧縮機構部
３ 電動機
４ａ 電源端子箱
４ｂ 電源端子箱
４ｃ 電源端子箱
５ａ 電源端子箱本体
５ｂ 電源端子箱本体
５ｃ 電源端子箱本体
６ａ 電源端子箱蓋
６ｂ 電源端子箱蓋
６ｃ 電源端子箱蓋
７ 吸入配管
８ 吐出配管
９ 電源線
１０ 端子接続部
１１ 電源端子箱蓋のねじ
１２ａ支え板ａ
１２ｂ 支え板ｂ
１２ｃ 支え板ｃ
１３ 電源端子
１４ 電源端子のねじ
２１ プレス打抜き時に発生するバリ
２２ａ プレス工程（ａ）により製造される電源端子箱蓋
２２ｂ プレス工程（ｂ）により製造される電源端子箱蓋
２２ｃ プレス工程（ｃ）により製造される電源端子箱蓋
２２ｄ プレス工程（ｄ）により製造される電源端子箱蓋
Ｌ 支え板と電源端子箱の蓋の隙間
δ 支え板が弾性変形する際のたわみ
Ｐ 支え板に発生する荷重
Ｆ 支え板と電源端子箱本体の固定強度
DESCRIPTION OF SYMBOLS 1 Pressure vessel 2 Compression mechanism part 3 Electric motor 4a Power supply terminal box 4b Power supply terminal box 4c Power supply terminal box 5a Power supply terminal box main body 5b Power supply terminal box main body 5c Power supply terminal box main body 6a Power supply terminal box cover 6b Power supply terminal box cover 6c Power supply terminal box Lid 7 Suction piping 8 Discharge piping 9 Power line 10 Terminal connection 11 Screw for power terminal box lid 12a Support plate a
12b Support plate b
12c Support plate c
13 Power supply terminal 14 Power supply terminal screw
21 Burr generated during press punching 22a Power supply terminal box cover 22b manufactured by pressing process (a) 22b Power supply terminal box cover manufactured by pressing process (b) 22c Power supply terminal box cover manufactured by pressing process (c) 22d Power terminal box lid manufactured by pressing step (d) L Clearance between support plate and power terminal box lid δ Deflection when support plate is elastically deformed P Load generated on support plate F Support plate and power terminal box body Fixed strength
Claims (4)
該電源端子箱本体及び前記接続部を覆う電源端子箱蓋と、を備え、
前記電源端子箱本体の内側に前記電源端子箱蓋と締結するための少なくとも２箇所の締結部が形成され、
前記電源端子箱本体又は前記電源端子箱蓋には前記電源線が挿入される電源線入口部が形成される電源端子箱構造において、
前記３箇所の接続部は、前記電源線入口部に対して最も近い位置に配置される第１接続部と、前記電源線入口部に対して前記第１の接続部よりも遠い位置に配置される第２接続部及び第３接続部とから構成されるとともに、
前記第３接続部は前記第１接続部に対して前記第２接続部と反対側に配置され、
前記２箇所の締結部は、前記第２接続部及び第３接続部よりも前記電源線入口部に近い位置に配置されるとともに前記電源線に対して前記第１接続部を挟むようにそれぞれ反対側に配置され、
前記電源端子箱蓋の側面は正面から前記電源端子箱本体の底面方向に向かうにつれて前記電源端子箱本体の側面から離れるように形成され、
前記電源端子箱蓋を前記電源端子箱本体に被せた状態で、前記電源端子箱蓋の正面の内側表面と前記締結部の外側表面との間に所定の隙間がある場合に、前記２箇所の締結部のさらに外側に位置する前記電源端子箱蓋の側面が前記電源端子箱本体の側面と第１接触部にて接触し、
前記隙間が小さくなるように前記２箇所の締結部により締結を行うことで前記電源端子箱蓋の側面と前記電源端子箱本体の側面との接触点が前記第１接触部から第２接触部に変わり、
前記第２接触部は前記電源端子箱蓋の側面において前記第１接触部より前記電源端子箱蓋の正面側に位置することを特徴とする電源端子箱構造。 A power terminal box main body having at least three connection portions connected to each of at least three power lines inside;
A power terminal box cover that covers the power terminal box body and the connecting portion;
At least two fastening portions for fastening with the power terminal box lid are formed inside the power terminal box body,
In the power supply terminal box structure in which the power supply line inlet portion into which the power supply line is inserted is formed in the power supply terminal box body or the power supply terminal box lid,
The three connection portions are disposed at a position farthest from the first connection portion with respect to the power line entry portion, and a first connection portion disposed at a position closest to the power line entry portion. A second connection portion and a third connection portion,
The third connecting portion is disposed on the opposite side of the second connecting portion with respect to the first connecting portion ;
The fastening portion of the two locations, opposite each so as to sandwich the first connecting part for the power line while being located closer to the power supply line inlet portion than the second connection portion and the third connecting portion arranged on the side,
The side surface of the power terminal box lid is formed so as to move away from the side surface of the power terminal box body as it goes from the front toward the bottom surface of the power terminal box body.
When there is a predetermined gap between the front inner surface of the power terminal box lid and the outer surface of the fastening portion in a state where the power terminal box lid is put on the power terminal box main body, the two places The side surface of the power terminal box lid located further outside the fastening portion is in contact with the side surface of the power terminal box main body at the first contact portion,
The contact point between the side surface of the power terminal box lid and the side surface of the power terminal box main body is changed from the first contact portion to the second contact portion by performing fastening with the two fastening portions so that the gap becomes small. change,
It said second contact portion is the power in the side of the terminal box cover to position on the front side of the power supply terminal box cover from the first contact portion power supply terminal box structure according to claim Rukoto.
電源線入口部は前記電源端子箱本体又は前記電源端子箱蓋の一部を内側に折り曲げることにより形成されることを特徴とする電源端子箱構造。 In the power terminal box structure according to claim 1,
The power supply terminal box structure is formed by bending a part of the power supply terminal box main body or the power supply terminal box cover inward.
前記電源端子箱蓋の正面の内側表面と向き合う前記締結部の外側表面は前記電源端子箱蓋の正面の内側表面側に傾斜するように形成されるとともに、弾性変形する部材にて構成されることを特徴とする電源端子箱構造。 In the power terminal box structure according to claim 1,
The outer surface of the fastening portion that faces the inner surface of the front surface of the power terminal box cover is formed to be inclined toward the inner surface side of the front surface of the power terminal box cover, and is configured by a member that elastically deforms. Power terminal box structure characterized by
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| JPS58166079U (en) * | 1982-04-28 | 1983-11-05 | 日本電気株式会社 | Housing structure of electronic equipment |
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| US5199898A (en) * | 1991-09-23 | 1993-04-06 | Tecumseh Products Company | External terminal shield |
| JPH05176495A (en) * | 1991-12-26 | 1993-07-13 | Hitachi Ltd | Terminal box for motor and motor equipped with terminal box |
| JPH09158838A (en) * | 1995-12-05 | 1997-06-17 | Matsushita Electric Ind Co Ltd | Refrigerating air conditioner and hermetic compressor |
| JPH11136900A (en) * | 1997-10-28 | 1999-05-21 | Meidensha Corp | Terminal box structure for electric apparatus |
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