JP5755852B2 - Temperature sensor and method of manufacturing temperature sensor - Google Patents

Temperature sensor and method of manufacturing temperature sensor Download PDF

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JP5755852B2
JP5755852B2 JP2010177786A JP2010177786A JP5755852B2 JP 5755852 B2 JP5755852 B2 JP 5755852B2 JP 2010177786 A JP2010177786 A JP 2010177786A JP 2010177786 A JP2010177786 A JP 2010177786A JP 5755852 B2 JP5755852 B2 JP 5755852B2
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temperature sensor
temperature
bracket
thermistor
mold resin
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山中　一輝
一輝 山中
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Yazaki Corp
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Description

本発明は、温度センサ及び温度センサの製造方法に関する。   The present invention relates to a temperature sensor and a method for manufacturing the temperature sensor.

温度センサは、温度情報を得たい箇所（例えば、車両のトランスミッション内）に組み付けする必要があり、従来より種々のものが提案されている（特許文献１、特許文献２参照）。図６及び図７に温度センサの一従来例が示されている。   The temperature sensor needs to be assembled at a location where temperature information is desired to be obtained (for example, in a vehicle transmission), and various types of temperature sensors have been proposed (see Patent Document 1 and Patent Document 2). 6 and 7 show a conventional example of a temperature sensor.

この温度センサ５０は、図６に示すように、温度素子部であるサーミスタ５１と、このサーミスタ５１を収容するケース部６０と、サーミスタ５１の一対のリード線に各ジョイント部５２を介してそれぞれ接続され、ケース部６０の外部に導き出された２本の電線Ｗとから構成されている。温度センサ５０は、図７に示すように、トランスミッション内のブラケット７０に２本のインシュロック部材７１を介して固定される。   As shown in FIG. 6, the temperature sensor 50 is connected to a thermistor 51 as a temperature element portion, a case portion 60 that accommodates the thermistor 51, and a pair of lead wires of the thermistor 51 via joint portions 52. And two electric wires W led to the outside of the case portion 60. As shown in FIG. 7, the temperature sensor 50 is fixed to a bracket 70 in the transmission via two insulation lock members 71.

特開２００４−２７９３７１号公報JP 2004-279371 A 特開２００８−１２２５号公報JP 2008-1225 A

しかしながら、前記従来例では、温度センサ５０をブラケット７０にインシュロック部材７１を用いて組み付けする必要があるため、組み付け性が悪い。又、温度センサ５０とブラケット７０の他にインシュロック部材７１を用いるため、部品点数が多く、重量化、コストアップ、レイアウトスペースの増大等になるという問題がある。   However, in the conventional example, since it is necessary to assemble the temperature sensor 50 to the bracket 70 using the insulation lock member 71, the assemblability is poor. Further, since the insulation lock member 71 is used in addition to the temperature sensor 50 and the bracket 70, the number of parts is large, resulting in problems such as an increase in weight, an increase in cost, and an increase in layout space.

尚、特許文献１には、一対のリード部を弾性変形させた状態で温度センサを圧力導入孔に配置する技術が開示されている。しかし、温度センサを圧力導入孔に所定の形態で挿入する必要があるため、組み付け性が悪い。その上、圧力導入孔のような特殊な取り付け箇所でなければ温度センサを設置できないため、取付箇所に汎用性がない。   Patent Document 1 discloses a technique in which a temperature sensor is disposed in a pressure introduction hole in a state where a pair of lead portions are elastically deformed. However, since it is necessary to insert the temperature sensor into the pressure introducing hole in a predetermined form, the assembling property is poor. In addition, since the temperature sensor cannot be installed unless it is a special mounting location such as a pressure introduction hole, the mounting location is not versatile.

そこで、本発明は、前記した課題を解決すべくなされたものであり、組み付け性が良く、しかも、部品点数の削減による軽量化、コストダウン、レイアウトスペースの削減等が図れる温度センサ及びその製造方法を提供することを目的とする。   Therefore, the present invention has been made to solve the above-described problems, and is a temperature sensor that is easy to assemble and that can achieve weight reduction, cost reduction, layout space reduction, and the like by reducing the number of components, and a method for manufacturing the same. The purpose is to provide.

本発明は、温度を測定する温度素子部と、前記温度素子部とブラケットを一体とするモールド樹脂部とを備え、前記モールド樹脂部には、前記温度素子部を外部に開口する温度測定用窓部が設けられていることを特徴とする。 The present invention includes a temperature element portion for measuring temperature, and a mold resin portion in which the temperature element portion and the bracket are integrated, and the mold resin portion has a temperature measurement window that opens the temperature element portion to the outside. A portion is provided .

前記ブラケットには、前記温度素子部と前記モールド樹脂部外に導き出される電線を仮保持する仮保持部を設けることが好ましい。   It is preferable that the bracket is provided with a temporary holding portion that temporarily holds an electric wire led out of the temperature element portion and the mold resin portion.

他の発明は、温度センサの製造方法であって、温度を測定する温度素子部に電線を接続する工程と、その後、前記温度素子部と前記電線をブラケットの仮保持部に仮保持する工程と、その後、前記温度素子部と前記ブラケットを一体とし、且つ、前記温度素子部を外部に開口する温度測定用窓部を有するモールド樹脂部を形成するモールド樹脂成形を行う工程とを備えたことを特徴とする。 Another invention is a method of manufacturing a temperature sensor, the step of connecting an electric wire to a temperature element portion for measuring temperature, and the step of temporarily holding the temperature element portion and the electric wire in a temporary holding portion of a bracket; And thereafter, forming the mold resin part to form the mold resin part having the temperature element part and the bracket, and having a temperature measurement window part that opens the temperature element part to the outside. Features.

本発明によれば、温度センサはブラケットと一体であるため、ブラケットを取り付けすれば、温度センサの組み付けが完了する。また、従来例のように温度センサをブラケットに組み付けするための部品が必要ない。以上より、組み付け性が良く、しかも、部品点数の削減による軽量化、コストダウン、レイアウトスペースの削減等が図れる。   According to the present invention, since the temperature sensor is integral with the bracket, the assembly of the temperature sensor is completed when the bracket is attached. Further, unlike the conventional example, there is no need for a part for assembling the temperature sensor to the bracket. As described above, the assemblability is good, and the weight can be reduced by reducing the number of parts, the cost can be reduced, and the layout space can be reduced.

本発明の一実施形態を示し、温度センサの斜視図である。1 is a perspective view of a temperature sensor according to an embodiment of the present invention. 本発明の一実施形態を示し、（ａ）はブラケットの正面図、（ｂ）はブラケットの底面部である。1 shows an embodiment of the present invention, in which (a) is a front view of the bracket, and (b) is a bottom portion of the bracket. 本発明の一実施形態を示し、（ａ）はサーミスタのリード線と電線間を接続した状態を示す正面図、（ｂ）サーミスタのリード線と電線間を接続した状態を示す底面図である。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows an embodiment of the present invention, wherein (a) is a front view showing a state in which a lead wire of a thermistor is connected to an electric wire, and (b) is a bottom view showing a state in which the lead wire of the thermistor is connected between an electric wire. 本発明の一実施形態を示し、（ａ）はブラケットにサーミスタ等を仮保持した状態を示す正面図、（ｂ）はブラケットにサーミスタ等を仮保持した状態を示す底面図である。1A and 1B are front views showing a state in which a thermistor or the like is temporarily held on a bracket, and FIG. 4B is a bottom view showing a state in which the thermistor or the like is temporarily held on a bracket. 本発明の一実施形態を示し、（ａ）はサーミスタとブラケットを一体にする樹脂モールド成形を行った状態を示す正面図、（ｂ）はサーミスタとブラケットを一体にする樹脂モールド成形を行った状態を示す底面図である。1 shows an embodiment of the present invention, (a) is a front view showing a state where resin thermistor and bracket are integrated, and (b) is a state where thermistor and a bracket are integrated. FIG. 従来例を示し、温度センサの斜視図である。It is a perspective view of a temperature sensor which shows a conventional example. 従来例を示し、温度センサをブラケットに組み付けた状態を示す斜視図である。It is a perspective view which shows a prior art example and shows the state which assembled | attached the temperature sensor to the bracket.

以下、本発明の一実施形態を図面に基づいて説明する。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

図１〜図５は本発明の一実施形態を示す。図１に示すように、温度センサ１は、トランスミッション内に設置される。温度センサ１は、温度を測定する温度素子部であるサーミスタ２と、このサーミスタ２とブラケット２０を一体とするモールド樹脂部１０と、サーミスタ２の一対のリード線２ａに各ジョイント部３（図２（ｂ）に示す）を介してそれぞれ接続され、モールド樹脂部１０の外部に導き出された２本の電線Ｗとから構成されている。   1 to 5 show an embodiment of the present invention. As shown in FIG. 1, the temperature sensor 1 is installed in a transmission. The temperature sensor 1 includes a thermistor 2 which is a temperature element portion for measuring temperature, a mold resin portion 10 in which the thermistor 2 and the bracket 20 are integrated, and a pair of lead wires 2a of the thermistor 2 to each joint portion 3 (FIG. 2). And two electric wires W that are connected to each other through the mold resin portion 10 and led to the outside of the mold resin portion 10.

サーミスタ２は、温度に応じて抵抗値が変化し、抵抗値の変化に基づく電気量を出力する。   The thermistor 2 changes its resistance value according to temperature and outputs an electric quantity based on the change of the resistance value.

モールド樹脂部１０は、モールド樹脂成形により形成されている。モールド樹脂部１０は、ほぼ長方形状である。モールド樹脂部１０内には、一対のリード線２ａを含むサーミスタ２と各ジョイント部３と２本の電線Ｗの一端側とブラケット２０の一部が配置されている。モールド樹脂部１０には、サーミスタ２を外部に開口する温度測定用窓部１０ａが設けられている。   The mold resin part 10 is formed by molding resin molding. The mold resin portion 10 has a substantially rectangular shape. In the mold resin portion 10, the thermistor 2 including the pair of lead wires 2a, each joint portion 3, one end side of the two electric wires W, and a part of the bracket 20 are disposed. The mold resin portion 10 is provided with a temperature measurement window portion 10a that opens the thermistor 2 to the outside.

図２（ａ）、（ｂ）に示すように、ブラケット２０は、トランスミッション内に取り付けるための取付部（図示せず）を有する。ブラケット２０は、サーミスタ２を仮保持するサーミスタ仮保持部２１とモールド樹脂部１０外に導き出される電線Ｗを仮保持する一対の電線仮保持部２２とを有している。   As shown in FIGS. 2A and 2B, the bracket 20 has a mounting portion (not shown) for mounting in the transmission. The bracket 20 includes a thermistor temporary holding portion 21 that temporarily holds the thermistor 2 and a pair of electric wire temporary holding portions 22 that temporarily hold the electric wires W led out of the mold resin portion 10.

次に、温度センサ１の製造方法を簡単に説明する。先ず、図３（ａ）、（ｂ）に示すように、サーミスタ２の一対のリード線２ａと２本の電線Ｗをジョイント部３で接続する。   Next, a method for manufacturing the temperature sensor 1 will be briefly described. First, as shown in FIGS. 3A and 3B, the pair of lead wires 2 a of the thermistor 2 and the two electric wires W are connected by the joint portion 3.

次に、図４（ａ）、（ｂ）に示すように、ブラケット２０のサーミスタ仮保持部２１と一対の電線仮保持部２２にサーミスタ２と一対のジョイント部３を仮保持する。   Next, as shown in FIGS. 4A and 4B, the thermistor 2 and the pair of joint portions 3 are temporarily held by the thermistor temporary holding portion 21 and the pair of electric wire temporary holding portions 22 of the bracket 20.

次に、図５（ａ）、（ｂ）に示すように、サーミスタ２とブラケット２０を一体とするモールド樹脂部１０をモールド樹脂成形によって形成する。以上で、製造が完了する。   Next, as shown in FIGS. 5A and 5B, a mold resin portion 10 in which the thermistor 2 and the bracket 20 are integrated is formed by molding resin molding. This completes the manufacture.

このように製造された温度センサ１は、ブラケット２０をトランスミッション内の被取付部に取り付ければ、組み付けできる。   The temperature sensor 1 manufactured in this way can be assembled by attaching the bracket 20 to the attached portion in the transmission.

以上説明したように、温度センサ１は、サーミスタ２と、サーミスタ２とブラケット２０を一体とするモールド樹脂部１０とを備えている。従って、温度センサ１を組み付けする箇所、つまり、トランスミッションの被取付位置にブラケット２０を取り付けすれば、温度センサ１の組み付けが完了する。又、従来例のように温度センサ１をブラケット２０に組み付けするための部品が一切必要ない。以上より、組み付け性が良く、しかも、部品点数の削減による軽量化、コストダウン、レイアウトスペースの削減等が図れる。   As described above, the temperature sensor 1 includes the thermistor 2 and the mold resin portion 10 in which the thermistor 2 and the bracket 20 are integrated. Therefore, if the bracket 20 is attached to the place where the temperature sensor 1 is assembled, that is, the position where the transmission is attached, the assembly of the temperature sensor 1 is completed. Further, no parts for assembling the temperature sensor 1 to the bracket 20 as in the conventional example are required. As described above, the assemblability is good, and the weight can be reduced by reducing the number of parts, the cost can be reduced, and the layout space can be reduced.

また、この実施形態では、温度センサ１をトランスミッション内に取り付けるが、温度センサ１をブラケット２０によって取り付けるため、温度センサ１の設置個所が限定されず、設置個所に汎用性がある。   In this embodiment, the temperature sensor 1 is mounted in the transmission. However, since the temperature sensor 1 is mounted by the bracket 20, the installation location of the temperature sensor 1 is not limited, and the installation location is versatile.

特に、トランスミッション内は、スペース制約が厳しく、従来例のようなインシュロック部材を含めた温度センサ用のクリアランス確保が非常に困難な状況である。本発明では、従来例と比較して、インシュロック部材の設置分が削減できるため、トランスミッション内の設置を可能とする。   In particular, the space inside the transmission is severely limited, and it is very difficult to secure a clearance for a temperature sensor including an insulation lock member as in the conventional example. In the present invention, since the installation amount of the insulation lock member can be reduced as compared with the conventional example, the installation in the transmission is enabled.

温度センサ１の製造とワイヤーハーネスの製造を一箇所で行う場合には、ワイヤーハーネス製造工程のライン側にモールド樹脂成形機を設置する。これによって、温度センサ１を備えたワイヤーハーネスを一連の製造工程で製造することができる。つまり、ワイヤーハーネスのフレキシブルな製造工程を実現できる。   When manufacturing the temperature sensor 1 and the wire harness at one place, a mold resin molding machine is installed on the line side of the wire harness manufacturing process. Thereby, the wire harness provided with the temperature sensor 1 can be manufactured in a series of manufacturing processes. That is, the flexible manufacturing process of a wire harness is realizable.

ブラケット２０には、サーミスタ２を仮保持するサーミスタ仮保持部２１とモールド樹脂部１０外に導き出される電線Ｗを仮保持する電線仮保持部２２が設けられている。従って、サーミスタ２と電線Ｗのブラケット２０への仮保持を所定の位置に迅速に、且つ、確実に行うことができる。   The bracket 20 is provided with a thermistor temporary holding portion 21 that temporarily holds the thermistor 2 and a wire temporary holding portion 22 that temporarily holds the electric wire W led out of the mold resin portion 10. Therefore, the temporary holding of the thermistor 2 and the electric wire W to the bracket 20 can be quickly and reliably performed at a predetermined position.

（変形例等）
前記各実施形態では、温度素子部は、サーミスタ２であるが、温度を電気信号に変換できるものであれば良い。 (Modifications, etc.)
In each said embodiment, although the temperature element part is the thermistor 2, what is necessary is just to be able to convert temperature into an electric signal.

前記各実施形態では、温度センサ１を車両のトランスミッション内に配置するが、温度センサ１の配置箇所はどこでも良い。   In each said embodiment, although the temperature sensor 1 is arrange | positioned in the transmission of a vehicle, the arrangement | positioning location of the temperature sensor 1 may be anywhere.

１ 温度センサ
２ サーミスタ（温度素子部）
１０ モールド樹脂部
２０ ブラケット
２１ サーミスタ仮保持部（仮保持部）
２２ 電線仮保持部（仮保持部）
Ｗ 電線 1 Temperature Sensor 2 Thermistor (Temperature Element)
10 Mold resin part 20 Bracket 21 Thermistor temporary holding part (temporary holding part)
22 Temporary wire holding part (temporary holding part)
W electric wire

Claims (3)

温度を測定する温度素子部と、前記温度素子部とブラケットを一体とするモールド樹脂部とを備え、前記モールド樹脂部には、前記温度素子部を外部に開口する温度測定用窓部が設けられていることを特徴とする温度センサ。 A temperature element portion for measuring temperature and a mold resin portion in which the temperature element portion and the bracket are integrated are provided , and the mold resin portion is provided with a temperature measurement window portion that opens the temperature element portion to the outside. a temperature sensor, characterized in that are. 請求項１記載の温度センサであって、
前記ブラケットには、前記温度素子部と前記モールド樹脂部外に導き出される電線を仮保持する仮保持部が設けられていることを特徴とする温度センサ。 The temperature sensor according to claim 1,
The temperature sensor, wherein the bracket is provided with a temporary holding portion for temporarily holding an electric wire led out of the temperature element portion and the mold resin portion. 温度を測定する温度素子部に電線を接続する工程と、
その後、前記温度素子部と前記電線をブラケットの仮保持部に仮保持する工程と、
その後、前記温度素子部と前記ブラケットを一体とし、且つ、前記温度素子部を外部に開口する温度測定用窓部を有するモールド樹脂部を形成するモールド樹脂成形を行う工程とを備えたことを特徴とする温度センサの製造方法。
Connecting an electric wire to a temperature element portion for measuring temperature;
Then, temporarily holding the temperature element portion and the electric wire in a temporary holding portion of the bracket,
And a step of performing mold resin molding, in which the temperature element portion and the bracket are integrated, and a mold resin portion having a temperature measurement window portion that opens the temperature element portion to the outside is formed. A method for manufacturing a temperature sensor.
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