JP5046745B2 - Automotive instrument - Google Patents

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JP5046745B2
JP5046745B2 JP2007135656A JP2007135656A JP5046745B2 JP 5046745 B2 JP5046745 B2 JP 5046745B2 JP 2007135656 A JP2007135656 A JP 2007135656A JP 2007135656 A JP2007135656 A JP 2007135656A JP 5046745 B2 JP5046745 B2 JP 5046745B2
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wiring board
elastic locking
case
protrusion
automotive instrument
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JP2008292198A (en
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清 早川
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Yazaki Corp
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Yazaki Corp
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本発明は、自動車に搭載される自動車用計器に関する。   The present invention relates to an automotive instrument mounted on an automobile.

この種の従来の自動車用計器１００は、図３及び図４に示すように、ケース１０１と、ケース１０１に表面側より装着された文字板１０２と、ケース１０１に表面側より装着され、文字板１０２の表面側に配置された見返し１０３及び装飾リング１０４と、表面側よりケース１０１に装着され、文字板１０２、見返し１０３、装飾リング１０４等を被う表ガラス１０５と、ケース１０１に裏面側より装着され、文字板１０２に平行に配置された配線板１０６と、この配線板１０６の裏面側に組付けされたスピードメータ、タコメータ等の各種の指針駆動部１１０と、ケース１０１に裏面側より装着され、配線板１０６の裏面側を被う裏カバー１０７とを備えている。   As shown in FIGS. 3 and 4, this type of conventional automobile instrument 100 includes a case 101, a dial 102 attached to the case 101 from the front side, and a case 101 attached from the front side to the dial 101. The facing 103 and the decorative ring 104 arranged on the front surface side of the 102, the front glass 105 mounted on the case 101 from the front surface side and covering the dial plate 102, the facing 103, the decorative ring 104, etc., and the case 101 from the back surface side. A wiring board 106 mounted in parallel to the dial plate 102, various pointer driving units 110 such as a speedometer and a tachometer assembled on the back side of the wiring board 106, and a case 101 mounted from the back side. And a back cover 107 covering the back side of the wiring board 106.

各指針駆動部１１０は、文字板１０２を貫通する指針軸１１１を有し、この指針軸１１１の先端に指針１１２がそれぞれ固定されている。各指針１１２は文字板１０２の表面を各指針駆動部１１０の駆動によって回転する。   Each pointer driving unit 110 has a pointer shaft 111 that penetrates the dial plate 102, and a pointer 112 is fixed to the tip of the pointer shaft 111. Each pointer 112 rotates on the surface of the dial plate 102 by driving each pointer driving unit 110.

指針駆動部１１０は、図５に示すように、複数の弾性係止アーム１２０を適所に有する。この弾性係止アーム１２０が配線板１０６の係止孔１２１の周縁に係止されることによって配線板１０６に組み付けされている。   As shown in FIG. 5, the pointer driving unit 110 has a plurality of elastic locking arms 120 in place. The elastic locking arm 120 is assembled to the wiring board 106 by being locked to the periphery of the locking hole 121 of the wiring board 106.

従って、指針駆動部１１０は、複数の弾性係止アーム１２０を配線板１０６の係止孔１２１に弾性変形させつつ挿入すれば、挿入された弾性係止アーム１２０が弾性復帰変形することによって配線板１０６に係止するため、配線板１０６に簡単に組み付けできるものである。   Accordingly, when the pointer driving unit 110 is inserted into the locking hole 121 of the wiring board 106 while elastically deforming the plurality of elastic locking arms 120, the inserted elastic locking arm 120 is elastically deformed to return to the wiring board. Since it is locked to 106, it can be easily assembled to the wiring board 106.

このような弾性係止アーム１２０による部品の組付け構造は、特許文献１に開示されている。
特開２００３−３１２２３２号公報 Such an assembly structure of parts by the elastic locking arm 120 is disclosed in Patent Document 1.
JP2003-31232A

しかしながら、前記従来の自動車用計器１００では、指針駆動部１１０が弾性係止アーム１２０の弾性係止力によってのみ配線板１０６に組み付けされている。従って、何らかの理由によって指針駆動部１１０に外力が作用すると、弾性係止アーム１２０が撓み変形して指針駆動部１１０が容易にガタ付くため、組付け信頼性が低いという問題がある。   However, in the conventional automotive instrument 100, the pointer drive unit 110 is assembled to the wiring board 106 only by the elastic locking force of the elastic locking arm 120. Therefore, when an external force is applied to the pointer driving unit 110 for some reason, the elastic locking arm 120 is bent and deformed, and the pointer driving unit 110 is easily rattled.

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、指針駆動部の組付け信頼性が高い自動車用計器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 an object of the present invention is to provide an automotive instrument with high assembly drive pointer reliability.

請求項１の発明は、配線板に被係止部を設け、指針駆動部に弾性係止アームを設け、前記弾性係止アームを撓み変形させて前記被係止部に係止することによって前記指針駆動部を前記配線板に組み付けた自動車用計器であって、前記配線板を支持するケース側に、前記弾性係止アームの係合解除方向への撓み変形を阻止する突起部を設け、前記被係止部は、前記配線板に設けられた係止孔であり、前記弾性係止アームが撓み変形し、前記係止孔に挿入されることによって前記係止孔の周縁に係止され、前記弾性係止アームは、互いに近接する方向に撓み変形して前記係止孔に挿入される一対のものとして構成されており、一対の前記弾性係止アームの間に前記突起部が挿入されたことを特徴とする。 According to the first aspect of the present invention, the locked portion is provided on the wiring board, the elastic locking arm is provided on the pointer driving portion, and the elastic locking arm is bent and deformed to be locked to the locked portion. the vehicle meter assembled with the hand drive unit to the wiring board, the case side for supporting the wiring board, provided with a protrusion for preventing the bending deformation of the disengaging direction of the elastic locking arms, the The locked portion is a locking hole provided in the wiring board, the elastic locking arm is bent and deformed, and is inserted into the locking hole to be locked to the periphery of the locking hole. The elastic locking arms are configured as a pair that is bent and deformed in directions approaching each other and inserted into the locking holes, and the protrusions are inserted between the pair of elastic locking arms . It is characterized by that.

請求項２の発明は、請求項１記載の自動車用計器であって、前記突起部は、文字板と前記配線板との間に配置される中継基板の中継基材であるリテーナに設けられたことを特徴とする。   The invention according to claim 2 is the automotive instrument according to claim 1, wherein the protrusion is provided on a retainer which is a relay base material of a relay board disposed between the dial and the wiring board. It is characterized by that.

請求項３の発明は、請求項２記載の自動車用計器であって、前記突起部は、前記リテーナの位置決め及び回り止めを兼用することを特徴とする。   A third aspect of the present invention is the automotive instrument according to the second aspect, wherein the protrusion serves also as a positioning and detent for the retainer.

以上説明したように、請求項１の発明によれば、何らかの理由によって指針駆動部に外力が作用しても、突起部によって弾性係止アームの係合解除方向への撓み変形が阻止されるため、指針駆動部が容易にガタ付くことがなく、組付け信頼性が高い。
また、一対の弾性係止アームが係合解除方向に撓み変形しようとする場合には、一対の弾性係止アームが互いに逆方向の外力を突起部が作用させるため、突起部が確実に弾性係止アームの係合解除方向への撓み変形を阻止できる。又、一対の弾性係止アームの撓み変形を単一の突起部によって阻止できるため、突起部の設置数を削減できる。 As described above, according to the first aspect of the present invention, even if an external force is applied to the pointer driving portion for some reason, the protruding portion prevents the elastic locking arm from being bent in the disengagement direction. The pointer drive part is not easily rattled and the assembly reliability is high.
In addition, when the pair of elastic locking arms tries to bend and deform in the disengagement direction, the pair of elastic locking arms cause external forces in opposite directions to act on each other, so that the protrusions are securely elastically engaged. The bending deformation of the stop arm in the disengagement direction can be prevented. Moreover, since the bending deformation of the pair of elastic locking arms can be prevented by a single protrusion, the number of protrusions can be reduced.

請求項２の発明によれば、請求項１の発明の効果に加え、文字板と配線板との間に中継基板を配置する際に、複数種類の中継基板を同じケースに選択的に装着するためにリテーナを中継基材として使用するが、そのリテーナは中継基板と同様に文字板と配線板との間に配置され、弾性係止アームの先端が突出する側に位置する。従って、リテーナは、突起部の設置部材としては最適な部材となり、ケース等に設けるより製造上有利である。   According to the invention of claim 2, in addition to the effect of the invention of claim 1, when the relay board is arranged between the dial and the wiring board, a plurality of types of relay boards are selectively attached to the same case. Therefore, the retainer is used as a relay base material, and the retainer is disposed between the dial plate and the wiring board in the same manner as the relay substrate, and is located on the side where the tip of the elastic locking arm protrudes. Therefore, the retainer is an optimal member as the installation member for the protrusion, and is more advantageous in manufacture than being provided in the case or the like.

請求項３の発明によれば、請求項２の発明の効果に加え、リテーナに突起部の他に位置決め手段や回り止め手段を設けることなく位置決めや回り止めが可能である。   According to the invention of claim 3, in addition to the effect of the invention of claim 2, positioning and rotation prevention are possible without providing positioning means and rotation prevention means in addition to the protrusions on the retainer.

以下、本発明の一実施形態を図面に基づいて説明する。図１及び図２は本発明の一実施形態を示し、図１は自動車用計器の断面図、図２は図１のＡ部拡大図である。   Hereinafter, an embodiment of the present invention will be described with reference to the drawings. 1 and 2 show an embodiment of the present invention, FIG. 1 is a cross-sectional view of an automotive instrument, and FIG. 2 is an enlarged view of part A of FIG.

図１に示すように、自動車用計器１は、ケース２と、ケース２に表面側より装着された中継基板アッシー３と、ケース２に表面側より装着された文字板４と、ケース２に表面側より装着され、文字板４の表面側に配置された見返し５と、ケース２に表面側より装着され、文字板４、見返し５等を被う表ガラス（図示せず）と、ケース２に裏面側より装着された制御基板アッシー６と、ケース２に裏面側より装着され、制御基板アッシー６の裏面側を被う裏カバー（図示せず）とを備えている。   As shown in FIG. 1, an automotive instrument 1 includes a case 2, a relay board assembly 3 attached to the case 2 from the front side, a dial 4 attached to the case 2 from the front side, and a surface on the case 2. The dial 5 attached from the side and arranged on the surface side of the dial 4, the front glass (not shown) attached to the case 2 from the surface side and covering the dial 4, dial 5, etc. A control board assembly 6 attached from the back side and a back cover (not shown) attached to the case 2 from the back side and covering the back side of the control board assembly 6 are provided.

制御基板アッシー６は、文字板４と平行に配置された配線板１０と、この配線板１０の裏面側に装着された指針駆動部１１とを有する。制御基板アッシー６は、配線板１０の端部がケース２の係止爪２ａに係止等されることによって装着されている。   The control board assembly 6 includes a wiring board 10 arranged in parallel with the dial 4 and a pointer driving unit 11 mounted on the back side of the wiring board 10. The control board assembly 6 is mounted by the end of the wiring board 10 being engaged with the engagement claw 2 a of the case 2.

配線板１０には、所望の回路パターンがプリント配線されていると共に図示しない電子部品が搭載され、電子部品と回路パターンによって指針駆動部１１の駆動制御回路が構成されている。又、配線板１０には、被係止部である係止孔１２が形成されており、この係止孔１２を利用して指針駆動部１１が組み付けされている。   A desired circuit pattern is printed on the wiring board 10 and electronic parts (not shown) are mounted, and a drive control circuit of the pointer driving unit 11 is configured by the electronic parts and the circuit pattern. Further, the wiring board 10 is formed with a locking hole 12 which is a locked portion, and the pointer driving unit 11 is assembled using the locking hole 12.

指針駆動部１１は、一対の弾性係止アーム１３を複数箇所に有する。この一対の弾性係止アーム１３の先端側を互いに近接する方向に撓み変形させて係止孔１２に挿入し、係止孔１２より突出した弾性係止アーム１３の先端側が互いに離間方向に撓み復帰変形して係止孔１２の周縁に係止することによって指針駆動部１１が配線板１０に組み付けされている。   The pointer drive unit 11 has a pair of elastic locking arms 13 at a plurality of locations. The distal ends of the pair of elastic locking arms 13 are bent and deformed in the direction approaching each other and inserted into the locking holes 12, and the distal ends of the elastic locking arms 13 protruding from the locking holes 12 are bent in the separation direction and returned. The pointer driving unit 11 is assembled to the wiring board 10 by being deformed and locked to the periphery of the locking hole 12.

指針駆動部１１は、内蔵モータによって回転する指針軸１４を有し、この指針軸１４は文字板４を貫通している。文字板４を貫通した指針軸１４の先端には指針１５が固定されている。指針１５は、制御基板アッシー６のケース２への組付け後に固定される。   The pointer drive unit 11 has a pointer shaft 14 that is rotated by a built-in motor, and the pointer shaft 14 passes through the dial 4. A pointer 15 is fixed to the tip of the pointer shaft 14 penetrating the dial 4. The pointer 15 is fixed after the control board assembly 6 is assembled to the case 2.

中継基板アッシー３は、中継基板２０とこれに固定された樹脂製のリテーナ２１とを備えている。リテーナ２１は、文字板４と配線板１０との間に中継基板２０を配置する際に、複数種類の中継基板２０を同じケース２に選択的に装着するための中継基材であり、中継基板２０と同様に文字板４と配線板１０との間に配置される。このリテーナ２１には係止ピン２１ａや高さ決めピン２１ｂが設けられ、係止ピン２１ａがケース２のピン圧入部２ｂに圧入され、且つ、高さ決めピン２１ｂがケース２に当接することによってケース２に装着されている。又、リテーナ２１には円錐状の突起部２２が設けられ、この突起部２２が一対の弾性係止アーム１３の間に挿入されている。つまり、一対の弾性係止アーム１３の係合解除方向へのそれぞれの撓み変形を阻止する位置に配置されている。突起部２２は、リテーナ２１の位置決め機能や回り止め機能をも有している。   The relay board assembly 3 includes a relay board 20 and a resin retainer 21 fixed to the relay board 20. The retainer 21 is a relay base material for selectively mounting a plurality of types of relay boards 20 on the same case 2 when the relay board 20 is disposed between the dial 4 and the wiring board 10. Similar to 20, it is arranged between the dial 4 and the wiring board 10. The retainer 21 is provided with a locking pin 21 a and a height determining pin 21 b, the locking pin 21 a is press-fitted into the pin press-fitting portion 2 b of the case 2, and the height determining pin 21 b comes into contact with the case 2. It is attached to case 2. The retainer 21 is provided with a conical protrusion 22, and the protrusion 22 is inserted between the pair of elastic locking arms 13. That is, it arrange | positions in the position which prevents each bending deformation to a disengagement direction of a pair of elastic locking arm 13. FIG. The protruding portion 22 also has a positioning function and a detent function of the retainer 21.

次に、自動車用計器１の組付け手順を簡単に説明する。ケース２の表面側より中継基板アッシー３をケース２内に挿入し、リテーナ２１の係止ピン２１ａをケース２のピン圧入部２ｂに圧入する等して組み付ける。次に、ケース２の表面側より文字板４、見返し５等をケース２内に組み付けする。   Next, a procedure for assembling the automotive instrument 1 will be briefly described. The relay board assembly 3 is inserted into the case 2 from the surface side of the case 2, and the locking pin 21a of the retainer 21 is assembled by being press-fitted into the pin press-fitting portion 2b of the case 2. Next, the dial 4, the turn-back 5, etc. are assembled into the case 2 from the surface side of the case 2.

次に、ケース２の裏面側より制御基板アッシー６をケース２内に挿入し、配線板１０の端部をケース２の係止爪２ａに係止等することによって組み付ける。制御基板アッシー６をケース２に組み付けすると、一対の弾性係止アーム１３の先端間にリテーナ２１の突起部２２が挿入される。   Next, the control board assembly 6 is inserted into the case 2 from the back side of the case 2, and the end portion of the wiring board 10 is assembled by being engaged with the engagement claw 2 a of the case 2. When the control board assembly 6 is assembled to the case 2, the protrusion 22 of the retainer 21 is inserted between the tips of the pair of elastic locking arms 13.

次に、文字板４の表面に突出した指針軸１４の先端に指針１５を装着する。   Next, the pointer 15 is attached to the tip of the pointer shaft 14 protruding from the surface of the dial 4.

最後に、ケース２の表面側と裏面側に表カバー（図示せず）と裏カバー（図示せず）をそれぞれ組付ければ完了する。   Finally, a front cover (not shown) and a back cover (not shown) are assembled on the front side and the back side of the case 2 to complete.

尚、中継基板アッシー３と制御基板アッシー６の組付け順序は逆であっても良い。   Note that the assembly order of the relay board assembly 3 and the control board assembly 6 may be reversed.

上記構成の自動車用計器１では、何らかの理由によって指針駆動部１１に外力が作用しても、突起部２２によって弾性係止アーム１３の係合解除方向への撓み変形が阻止されるため、指針駆動部１１が容易にガタ付くことがなく、組付け信頼性が高い。   In the automotive instrument 1 having the above-described configuration, even if an external force is applied to the pointer driving unit 11 for some reason, the protrusion 22 prevents the elastic locking arm 13 from being bent in the disengagement direction. The part 11 is not easily rattled and the assembly reliability is high.

この実施形態では、突起部２２は、文字板４と配線板１０との間に配置される中継基板２０の中継基材であるリテーナ２１に設けられている。つまり、文字板４と配線板１０との間に中継基板２０を配置する際に、複数種類の中継基板２０を同じケース２に選択的に装着するためにリテーナ２１を中継基材として使用するが、そのリテーナ２１は中継基板２０と同様に文字板４と配線板１０との間に配置され、弾性係止アーム１３の先端が突出する側に位置する。従って、リテーナ２１は、突起部２２の設置部材としては最適な部材となり、ケース２等に設けるより製造上有利である。尚、突起部２２は、リテーナ２１以外のケース２側の部材に設けても良く、又、ケース２自体に設けても良い。   In this embodiment, the protrusion 22 is provided on the retainer 21 that is a relay base material of the relay board 20 disposed between the dial 4 and the wiring board 10. That is, when the relay board 20 is disposed between the dial 4 and the wiring board 10, the retainer 21 is used as a relay base material in order to selectively attach a plurality of types of relay boards 20 to the same case 2. The retainer 21 is disposed between the dial 4 and the wiring board 10 in the same manner as the relay substrate 20 and is located on the side from which the tip of the elastic locking arm 13 protrudes. Therefore, the retainer 21 is an optimum member as an installation member for the protrusion 22 and is more advantageous in manufacturing than the case 2 and the like. The protrusion 22 may be provided on a member on the case 2 side other than the retainer 21 or may be provided on the case 2 itself.

この実施形態では、突起部２２は、リテーナ２１の位置決め及び回り止めを兼用するよう構成されている。従って、リテーナ２１に突起部２２の他に位置決め手段や回り止め手段を設けることなく位置決めや回り止めが可能である。   In this embodiment, the protrusion 22 is configured to be used for both positioning and rotation prevention of the retainer 21. Therefore, the retainer 21 can be positioned and stopped without providing positioning means and anti-rotation means in addition to the protrusion 22.

この実施形態では、弾性係止アーム１３は、互いに近接する方向に撓み変形して係止孔１２に挿入される一対のものとして構成され、一対の弾性係止アーム１３の間に突起部２２が挿入されるよう構成されている。従って、一対の弾性係止アーム１３が係合解除方向に撓み変形しようとする場合には、一対の弾性係止アーム１３が互いに逆方向の外力を突起部２２が作用させるため、突起部２２が確実に弾性係止アーム１３の撓み変形を阻止できる。又、一対の弾性係止アーム１３の係合解除方向への撓み変形を単一の突起部２２によって阻止できるため、突起部２２の設置数を削減できる。   In this embodiment, the elastic locking arm 13 is configured as a pair that is bent and deformed in a direction close to each other and inserted into the locking hole 12, and the protrusion 22 is provided between the pair of elastic locking arms 13. It is configured to be inserted. Accordingly, when the pair of elastic locking arms 13 is to bend and deform in the disengagement direction, the pair of elastic locking arms 13 causes the external forces in the opposite directions to act on each other. The bending deformation of the elastic locking arm 13 can be reliably prevented. In addition, since the single projecting portion 22 can prevent the pair of elastic locking arms 13 from being bent in the disengagement direction, the number of the projecting portions 22 can be reduced.

本発明の一実施形態を示し、自動車用計器の断面図である。1 shows an embodiment of the present invention and is a cross-sectional view of an automotive instrument. 本発明の一実施形態を示し、図１のＡ部拡大図である。FIG. 2 shows an embodiment of the present invention and is an enlarged view of part A in FIG. 1. 従来例の自動車用計器の正面図である。It is a front view of the instrument for motor vehicles of a prior art example. 図３のＸ−Ｘ線断面図である。It is the XX sectional view taken on the line of FIG. 指針駆動部の配線板への固定構造を示す断面図である。It is sectional drawing which shows the fixation structure to the wiring board of a pointer drive part.

符号の説明Explanation of symbols

１ 自動車用計器
２ ケース
４ 文字板
１０ 配線板
１１ 指針駆動部
１２ 係止孔（被係止部）
１３ 弾性係止アーム
２０ 中継基板
２１ リテーナ
２２ 突起部 DESCRIPTION OF SYMBOLS 1 Car instrument 2 Case 4 Dial 10 Wiring board 11 Pointer drive part 12 Locking hole (locked part)
13 Elastic locking arm 20 Relay board 21 Retainer 22 Projection

Claims (3)

配線板（１０）に被係止部（１２）を設け、指針駆動部（１１）に弾性係止アーム（１３）を設け、前記弾性係止アーム（１３）を撓み変形させて前記被係止部（１２）に係止することによって前記指針駆動部（１１）を前記配線板（１０）に組み付けた自動車用計器（１）であって、
前記配線板（１０）を支持するケース（２）側に、前記弾性係止アーム（１３）の係合解除方向への撓み変形を阻止する突起部（２２）を設け、
前記被係止部（１２）は、前記配線板（１０）に設けられた係止孔（１２）であり、前記弾性係止アーム（１３）が撓み変形し、前記係止孔（１２）に挿入されることによって前記係止孔（１２）の周縁に係止され、
前記弾性係止アーム（１３）は、互いに近接する方向に撓み変形して前記係止孔（１２）に挿入される一対のものとして構成されており、一対の前記弾性係止アーム（１３）の間に前記突起部（２２）が挿入されたことを特徴とする自動車用計器（１）。 A locked portion (12) is provided on the wiring board (10), an elastic locking arm (13) is provided on the pointer driving portion (11), and the elastic locking arm (13) is bent and deformed to thereby lock the locked portion. An automotive instrument (1) in which the pointer drive unit (11) is assembled to the wiring board (10) by being locked to a part (12),
Provided on the case (2) side supporting the wiring board (10) is a protrusion (22) that prevents the elastic locking arm (13) from being bent in the disengagement direction ,
The locked portion (12) is a locking hole (12) provided in the wiring board (10), and the elastic locking arm (13) is bent and deformed to form the locking hole (12). It is locked to the periphery of the locking hole (12) by being inserted,
The elastic locking arms (13) are configured as a pair that is bent and deformed in directions approaching each other and inserted into the locking holes (12), and the elastic locking arms (13) An automotive instrument (1) , wherein the protrusion (22) is inserted between the two . 請求項１記載の自動車用計器（１）であって、
前記突起部（２２）は、文字板（４）と前記配線板（１０）との間に配置される中継基板（２０）の中継基材であるリテーナ（２１）に設けられたことを特徴とする自動車用計器（１）。 An automotive instrument (1) according to claim 1,
The protrusion (22) is provided on a retainer (21) which is a relay base material of a relay board (20) disposed between the dial (4) and the wiring board (10). Automotive instrument (1). 請求項２記載の自動車用計器（１）であって、
前記突起部（２２）は、前記リテーナ（２１）の位置決め及び回り止めを兼用することを特徴とする自動車用計器（１）。 An automotive instrument (1) according to claim 2,
The automotive instrument (1), wherein the protrusion (22) serves as positioning and detent of the retainer (21).
JP2007135656A 2007-05-22 2007-05-22 Automotive instrument Active JP5046745B2 (en)

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