JP2008064484A - Water mater and its measuring unit - Google Patents
Water mater and its measuring unit Download PDFInfo
- Publication number
- JP2008064484A JP2008064484A JP2006239757A JP2006239757A JP2008064484A JP 2008064484 A JP2008064484 A JP 2008064484A JP 2006239757 A JP2006239757 A JP 2006239757A JP 2006239757 A JP2006239757 A JP 2006239757A JP 2008064484 A JP2008064484 A JP 2008064484A
- Authority
- JP
- Japan
- Prior art keywords
- locking
- flexible piece
- locking flexible
- display panel
- flow rate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
Abstract
Description
本発明は、メータケース内に嵌合された計測ユニットに、表示盤と、その下方に対向配置したギヤ支持盤と、表示盤とギヤ支持盤との間に支持された複数のギヤとを設け、それらギヤをメータケース内に収容した羽根車に連動させて、羽根車を通過する水道水の流量を、表示盤に備えた流量表示部に表示させる水道メータ及びその計測ユニットに関する。 According to the present invention, a measurement unit fitted in a meter case is provided with a display panel, a gear support panel arranged to face the display panel, and a plurality of gears supported between the display panel and the gear support panel. The present invention relates to a water meter and a measurement unit for displaying the flow rate of tap water passing through the impeller on a flow rate display unit provided in a display panel by interlocking the gears with the impeller accommodated in the meter case.
従来、この種の水道メータとして、表示盤とギヤ支持盤との間を表示盤から延びた連結支柱を介して一体に固定したものが知られている(例えば、特許文献1及び2参照)。
しかしながら、上記した従来の水道メータでは、ギヤ支持盤を貫通させたビスを連結支柱に螺合することで表示盤とギヤ支持盤とを固定していた為、組み立ての作業性が悪かった。 However, in the conventional water meter described above, since the display board and the gear support board are fixed by screwing the screw penetrating the gear support board to the connecting column, the assembling workability is poor.
本発明は、上記事情に鑑みてなされたもので、組み立ての作業性を向上することが可能な水道メータ及びその計測ユニットの提供を目的とする。 This invention is made | formed in view of the said situation, and aims at provision of the water meter which can improve the workability | operativity of an assembly, and its measuring unit.
上記目的を達成するためになされた請求項1の発明に係る水道メータは、メータケース内に嵌合された計測ユニットに、上面に流量表示部を有した表示盤と、表示盤の下方に対向配置されたギヤ支持盤と、表示盤とギヤ支持盤との間に支持されて、流量表示部を作動させるための複数のギヤとを設け、それらギヤを、メータケースのうち計測ユニットの下方に収容した羽根車に連動させて、羽根車を回転させて流れる水道水の流量を流量表示部に表示させる水道メータにおいて、表示盤とギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、連結支柱の外側面に重ねられた複数の係止可撓片とを設け、各連結支柱の外側面には、係止可撓片を上下方向に案内する係合溝が形成されると共に、係合溝の底面と係止可撓片の内側面とには、係止可撓片が係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、計測ユニットをメータケース内に嵌合した状態で、そのメータケースの内側面により各係止可撓片の外側への弾性変形を規制したところに特徴を有する。 In order to achieve the above object, a water meter according to the invention of claim 1 is directed to a measurement unit fitted in a meter case, a display panel having a flow rate display on the upper surface, and a lower side of the display panel. Provided between the arranged gear support board and the display board and the gear support board, and a plurality of gears for operating the flow rate display unit, and these gears are provided below the measurement unit in the meter case. In the water meter that displays the flow rate of tap water flowing by rotating the impeller in conjunction with the impeller accommodated in the flow rate display unit, the display panel and the gear support panel extend from one outer edge to the other. Provided with a plurality of connecting struts and a plurality of locking flexible pieces extending from the other outer edge portion to one side and superimposed on the outer surface of the connecting struts. Engagement grooves that guide the flexure in the vertical direction are formed In addition, the bottom surface of the engaging groove and the inner side surface of the locking flexible piece are elastically deformed outward during the movement of the locking flexible piece in the engaging groove, overcoming each other and locked in the vertical direction. This is characterized in that the elastic deformation to the outside of each locking flexible piece is restricted by the inner surface of the meter case in a state where the locking protrusion is formed and the measuring unit is fitted in the meter case.
請求項2の発明は、請求項1に記載の水道メータにおいて、係止突部は、係合溝の底面及び係止可撓片の内側面の長手方向の中間に配置され、表示盤には、係止突部同士が互いに乗り上がる前に、各係止可撓片の先端部を受容し、各係止可撓片の先端部の外側への移動を規制する先端受容部を備えたところに特徴を有する。 According to a second aspect of the present invention, in the water meter according to the first aspect, the locking protrusion is disposed in the middle of the bottom surface of the engaging groove and the inner surface of the locking flexible piece in the longitudinal direction. The front end of each locking flexible piece is received before the locking protrusions ride on each other, and a tip receiving portion is provided for restricting movement of the front end of each locking flexible piece to the outside. It has the characteristics.
請求項3の発明に係る水道メータは、メータケース内に嵌合された計測ユニットに、上面に流量表示部を有した表示盤と、表示盤の下方に対向配置されたギヤ支持盤と、表示盤とギヤ支持盤との間に支持されて、流量表示部を作動させるための複数のギヤとを設け、それらギヤを、メータケースのうち計測ユニットの下方に収容した羽根車に連動させて、羽根車を回転させて流れる水道水の流量を流量表示部に表示させる水道メータにおいて、表示盤とギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、連結支柱の外側面に重ねられた複数の係止可撓片とを設け、各連結支柱の外側面には、係止可撓片を上下方向に案内する係合溝が形成されると共に、係合溝の底面と係止可撓片の内側面とには、係止可撓片が係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、係止突部は、係合溝の底面及び係止可撓片の内側面の長手方向の中間に配置され、表示盤には、係止突部同士が互いに乗り上がる前に、各係止可撓片の先端部を受容し、各係止可撓片の先端部の外側への移動を規制する先端受容部を備えたところに特徴を有する。 A water meter according to a third aspect of the present invention is directed to a measurement unit fitted in a meter case, a display panel having a flow rate display part on the upper surface, a gear support panel disposed oppositely below the display panel, and a display A plurality of gears that are supported between the board and the gear support board and operate the flow rate display unit are provided, and these gears are linked to an impeller housed below the measurement unit in the meter case, In the water meter that displays the flow rate of tap water flowing by rotating the impeller on the flow rate display unit, a plurality of connecting columns extending from one outer edge part to the other of the display panel and the gear support panel, and the other A plurality of locking flexible pieces extending from the outer edge portion to one side and overlaid on the outer side surface of the connecting column are provided, and the locking flexible pieces are guided in the vertical direction on the outer side surface of each connecting column. A groove is formed and locked to the bottom of the engagement groove On the inner side surface of the flexible piece, there is formed a locking projection that elastically deforms outward during the movement of the locking flexible piece in the engagement groove, gets over each other and is locked in the vertical direction. Is arranged in the middle of the longitudinal direction of the bottom surface of the engaging groove and the inner side surface of the locking flexible piece, and before the locking projections ride on each other on the display board, It has a feature in that it has a tip receiving portion that receives the tip portion and restricts the movement of each locking flexible piece to the outside of the tip portion.
請求項4の発明は、請求項2又は3に記載の水道メータにおいて、先端受容部は、表示盤に貫通形成され、係止可撓片は、係止突部同士が上下方向で係止した状態で先端受容部の上方に突出したところに特徴を有する。 According to a fourth aspect of the present invention, in the water meter according to the second or third aspect, the tip receiving portion is formed through the display panel, and the locking flexible piece is locked between the locking projections in the vertical direction. It is characterized by protruding above the tip receiving portion in a state.
請求項5の発明は、請求項2乃至4の何れかに記載の水道メータにおいて、先端受容部は、表示盤に貫通形成されると共に、先端受容部の内面と係止可撓片の内側面との間に工具挿入空間が形成され、互いに上下方向で係止した係止突部のうち少なくとも係止可撓片の内側面に配置された一方の係止突部には、他方の係止突部に徐々に乗り上がるための摺接傾斜面が形成され、計測ユニットをメータケースから取り外した状態において、工具挿入空間に上方から挿入した帯板状の工具を、摺接傾斜面に摺接させて係止可撓片を外側に弾性変形させ、係止突部同士の係止を解除可能としたところに特徴を有する。 According to a fifth aspect of the present invention, in the water meter according to any one of the second to fourth aspects, the tip receiving portion is formed through the display board, and the inner surface of the tip receiving portion and the inner side surface of the locking flexible piece A tool insertion space is formed between the locking projections and the locking projections disposed on the inner surface of the locking flexible piece among the locking projections locked in the vertical direction. A sliding contact inclined surface for gradually climbing the protrusion is formed, and in the state where the measurement unit is removed from the meter case, a strip-like tool inserted from above into the tool insertion space is contacted with the sliding contact inclined surface. Thus, the locking flexible piece is elastically deformed to the outside so that the locking protrusions can be unlocked.
請求項6の発明は、請求項1乃至5の何れかに記載の水道メータにおいて、各ギヤの中心部から回転シャフトが上下に突出形成されると共に、表示盤とギヤ支持盤とには、回転シャフトの両端部を軸支する複数の支持孔が形成され、表示盤の支持孔とギヤ支持盤の支持孔とが正規の組み合わせで対向した場合にのみ、全ての連結支柱の係合溝に全ての係止可撓片が挿入されるように、係止可撓片同士の間隔を異ならせて配置したところに特徴を有する。 According to a sixth aspect of the present invention, in the water meter according to any one of the first to fifth aspects, the rotary shaft is formed so as to protrude vertically from the center portion of each gear, and the display panel and the gear support panel are configured to rotate. Only when the support holes of the display board and the support holes of the gear support board face each other in a proper combination, all the engagement grooves of all the connecting struts are formed. This is characterized in that the locking flexible pieces are arranged at different intervals so that the locking flexible pieces are inserted.
請求項7の発明は、請求項6に記載の水道メータにおいて、ギヤ支持盤は、1対の支持盤構成板を上下に重ねてなり、上側の支持盤構成板に支持孔が貫通形成される一方、下側の支持盤構成板に複数の係止可撓片が一体形成され、複数の連結支柱を表示盤から垂下し、それら連結支柱と下側の支持盤構成板との間で上側の支持盤構成板を挟んで固定したところに特徴を有する。 A seventh aspect of the present invention is the water meter according to the sixth aspect, wherein the gear support plate is formed by stacking a pair of support plate constituting plates vertically, and a support hole is formed through the upper support plate constituting plate. On the other hand, a plurality of locking flexible pieces are integrally formed on the lower support board component plate, and a plurality of connection columns are suspended from the display panel, and the upper support plate component plate is connected between the connection columns and the lower support plate component plate. It is characterized in that it is fixed with a support plate constituting plate in between.
請求項8の発明に係る計測ユニットは、水道メータに備えたメータケース内に嵌合される計測ユニットであって、上面に流量表示部を有した表示盤と、表示盤の下方に対向配置されたギヤ支持盤と、表示盤とギヤ支持盤との間に支持されて、流量表示部を作動させるための複数のギヤとを備え、それらギヤを、メータケースのうち計測ユニットの下方に収容される羽根車に連動させて、羽根車を回転させて流れる水道水の流量を流量表示部に表示可能な計測ユニットにおいて、表示盤とギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、連結支柱の外側面に重ねられた複数の係止可撓片とを設け、各連結支柱の外側面には、係止可撓片を上下方向に案内する係合溝が形成されると共に、係合溝の底面と係止可撓片の内側面とには、係止可撓片が係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、計測ユニットをメータケース内に嵌合した状態で、そのメータケースの内側面により各係止可撓片の外側への弾性変形を規制したところに特徴を有する。 A measuring unit according to an eighth aspect of the present invention is a measuring unit fitted in a meter case provided in a water meter, and is disposed so as to face a display panel having a flow rate display part on the upper surface and below the display panel. A gear support board and a plurality of gears supported between the display board and the gear support board for operating the flow rate display unit, and these gears are accommodated below the measurement unit in the meter case. In a measurement unit that can display the flow rate of tap water flowing by rotating the impeller in conjunction with the impeller to be displayed on the flow rate display section, the display panel and the gear support panel extend from one outer edge to the other. Provided with a plurality of connecting struts and a plurality of locking flexible pieces extending from the other outer edge portion to one side and superimposed on the outer surface of the connecting struts. An engaging groove is formed to guide the flexure in the vertical direction. In addition, the bottom surface of the engaging groove and the inner side surface of the locking flexible piece are elastically deformed outward during the movement of the locking flexible piece in the engaging groove, get over each other, and are locked in the vertical direction. This is characterized in that the elastic deformation to the outside of each locking flexible piece is restricted by the inner surface of the meter case in a state where the locking protrusion is formed and the measuring unit is fitted in the meter case.
請求項9の発明に係る計測ユニットは、水道メータに備えたメータケース内に嵌合される計測ユニットであって、上面に流量表示部を有した表示盤と、表示盤の下方に対向配置されたギヤ支持盤と、表示盤とギヤ支持盤との間に支持されて、流量表示部を作動させるための複数のギヤとを備え、それらギヤを、メータケースのうち計測ユニットの下方に収容される羽根車に連動させて、羽根車を回転させて流れる水道水の流量を流量表示部に表示可能な計測ユニットにおいて、表示盤とギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、連結支柱の外側面に重ねられた複数の係止可撓片とを設け、各連結支柱の外側面には、係止可撓片を上下方向に案内する係合溝が形成されると共に、係合溝の底面と係止可撓片の内側面とには、係止可撓片が係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、係止突部は、係合溝の底面及び係止可撓片の内側面の長手方向の中間に配置され、表示盤には、係止突部同士が互いに乗り上がる前に、各係止可撓片の先端部を受容し、各係止可撓片の先端部の外側への移動を規制する先端受容部を備えたところに特徴を有する。 A measuring unit according to the invention of claim 9 is a measuring unit fitted in a meter case provided in a water meter, and is disposed so as to face a display panel having a flow rate display part on the upper surface and below the display panel. A gear support board and a plurality of gears supported between the display board and the gear support board for operating the flow rate display unit, and these gears are accommodated below the measurement unit in the meter case. In a measurement unit that can display the flow rate of tap water flowing by rotating the impeller in conjunction with the impeller to be displayed on the flow rate display section, the display panel and the gear support panel extend from one outer edge to the other. Provided with a plurality of connecting struts and a plurality of locking flexible pieces extending from the other outer edge portion to one side and superimposed on the outer surface of the connecting struts. An engaging groove is formed to guide the flexure in the vertical direction. In addition, the bottom surface of the engaging groove and the inner side surface of the locking flexible piece are elastically deformed outward during the movement of the locking flexible piece in the engaging groove, get over each other, and are locked in the vertical direction. The locking projections are formed in the middle of the longitudinal direction of the bottom surface of the engagement groove and the inner side surface of the locking flexible piece. It has a feature in that it includes a tip receiving portion that receives the tip portion of each locking flexible piece before it rides and restricts the movement of each locking flexible piece to the outside.
[請求項1及び8の発明]
請求項1及び8の発明によれば、表示盤とギヤ支持盤のうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延びて連結支柱の外側面に重ねられた複数の係止可撓片とを設け、連結支柱の外側面に係止可撓片を上下方向に案内する係合溝を形成すると共に、係合溝の底面と係止可撓片の内側面とに係止突部を形成して、それら係止突部同士を上下方向で係止させることで、表示盤とギヤ支持盤とを一体に固定するようにした。詳細には、係止可撓片が係合溝内を移動する途中で係止突部同士が当接し、さらに移動すると係止突部同士が互いに乗り上がることで係止可撓片が外側に弾性変形し、係止突部が互いに乗り越えたときに、係止可撓片が弾発力により復元して係止突部同士が係止され、計測ユニットが完成する。これにより、従来のビスによる固定に比べて計測ユニットの組み立ての作業性が向上すると共に、部品コストの削減が図られる。
[Inventions of Claims 1 and 8]
According to the first and eighth aspects of the present invention, a plurality of connecting columns extending from one outer edge portion to the other of the display panel and the gear support plate, and extending from the other outer edge portion to one side, Provided with a plurality of locking flexible pieces stacked on the outer side surface, and forming an engaging groove for guiding the locking flexible piece in the vertical direction on the outer surface of the connecting column, and locking with the bottom surface of the engaging groove Locking projections are formed on the inner surface of the flexible piece, and the locking projections are locked in the vertical direction so that the display board and the gear support board are fixed together. Specifically, the locking protrusions come into contact with each other while the locking flexible piece moves in the engagement groove, and when the locking flexible piece moves further, the locking protrusions ride on each other, so that the locking flexible piece moves outward. When it is elastically deformed and the locking projections get over each other, the locking flexible piece is restored by the elastic force, and the locking projections are locked to complete the measurement unit. As a result, the workability of assembling the measuring unit is improved as compared with the conventional fixing with screws, and the cost of parts is reduced.
また、計測ユニットをメータケースに嵌合した状態では、メータケースの内側面により係止可撓片の外側への弾性変形が規制されるので、所謂、湿式水道メータにおいて、ギヤ支持盤が水圧により反って係止可撓片を外側へ傾動させる力がかかったとしても、係止突部の係止解除が防止される。これにより、メータケースの内部で、計測ユニットが分解することが防がれる。 Further, in a state where the measuring unit is fitted to the meter case, the elastic deformation of the locking flexible piece to the outside is restricted by the inner surface of the meter case. Even if a force that tilts the locking flexible piece outward is applied, the locking protrusion is prevented from being unlocked. This prevents the measurement unit from being disassembled inside the meter case.
[請求項2の発明]
請求項2の発明によれば、係止突部同士が乗り上がる前に、係止可撓片の先端部が先端受容部に受容され、係止可撓片の先端部の外側への移動が規制されるから、係止突部同士が乗り上がったときには、係止可撓片の長手方向の両端部から中央部に向かうに従って、係止可撓片が係止溝の外側に膨らむように弓なりに湾曲する。また、係止可撓片の先端部が先端受容部に受容されたので、計測ユニットがメータケースから取り外された状態でも、係止可撓片の先端部が意に反して外側に移動されて係止突部同士の係止状態が解除され、計測ユニットが分解することが防がれる。
[Invention of claim 2]
According to the invention of claim 2, before the locking projections ride on each other, the distal end portion of the locking flexible piece is received by the distal end receiving portion, and the movement of the locking flexible piece to the outside is stopped. When the locking projections ride on each other, they are bowed so that the locking flexible piece bulges outside the locking groove as it goes from the longitudinal ends of the locking flexible piece to the center. To curve. In addition, since the distal end portion of the locking flexible piece is received by the distal end receiving portion, the distal end portion of the locking flexible piece is moved to the outside unexpectedly even when the measurement unit is detached from the meter case. The locking state between the locking protrusions is released, and the measurement unit is prevented from being disassembled.
[請求項3及び9の発明]
請求項3及び9の発明によれば、表示盤とギヤ支持盤のうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延びて連結支柱の外側面に重ねられた複数の係止可撓片とを設け、連結支柱の外側面に係止可撓片を上下方向に案内する係合溝を形成すると共に、係合溝の底面と係止可撓片の内側面とに係止突部を形成して、それら係止突部同士を上下方向で係止させることで、表示盤とギヤ支持盤とを一体に固定するようにした。詳細には、係止可撓片が係合溝内を移動する途中で係止突部同士が当接し、係止突部同士が乗り上がる前に、係止可撓片の先端部が先端受容部に受容される。これにより、係止可撓片の先端部の外側への移動が規制されるから、係止突部同士が乗り上がったときには、係止可撓片の長手方向の両端部から中央部に向かうに従って、係止可撓片が係止溝の外側に膨らむように弓なりに湾曲する。そして係止突部が互いに乗り越えたときに、係止可撓片が弾発力により復元して係止突部同士が係止され、計測ユニットが完成する。これにより、従来のビスによる固定に比べて計測ユニットの組み立ての作業性が向上すると共に、部品コストの削減が図られる。
[Inventions of Claims 3 and 9]
According to the third and ninth aspects of the present invention, a plurality of connecting columns extending from one outer edge portion to the other of the display panel and the gear support plate, and extending from the other outer edge portion to one side, Provided with a plurality of locking flexible pieces stacked on the outer side surface, and forming an engaging groove for guiding the locking flexible piece in the vertical direction on the outer surface of the connecting column, and locking with the bottom surface of the engaging groove Locking projections are formed on the inner surface of the flexible piece, and the locking projections are locked in the vertical direction so that the display board and the gear support board are fixed together. Specifically, the locking projections come into contact with each other while the locking flexible piece moves in the engagement groove, and before the locking projections ride up, the distal end portion of the locking flexible piece receives the tip. Accepted by the department. Thereby, since the movement to the outer side of the front-end | tip part of a latching flexible piece is controlled, when a latching protrusion part gets on, it goes to the center part from the both ends of the longitudinal direction of a latching flexible piece. Then, the locking flexible piece is curved like a bow so as to swell outside the locking groove. When the locking projections get over each other, the locking flexible piece is restored by the elastic force, and the locking projections are locked to complete the measurement unit. As a result, the workability of assembling the measuring unit is improved as compared with the conventional fixing with screws, and the cost of parts is reduced.
また、係止可撓片の先端部が先端受容部に受容され、係止可撓片の外側への移動が規制されたので、所謂、湿式水道メータにおいて、ギヤ支持盤が水圧により反って係止可撓片を外側へ傾動させる力がかかったとしても、係止突部の係止解除が防止される。これにより、メータケースの内部で、計測ユニットが分解することが防がれる。さらに、計測ユニットがメータケースから取り外された状態でも、係止可撓片の先端部が意に反して外側に移動されて係止突部同士の係止状態が解除され、計測ユニットが分解することが防がれる。 Further, since the distal end portion of the locking flexible piece is received by the tip receiving portion and the movement of the locking flexible piece to the outside is restricted, the gear support board is warped by water pressure in a so-called wet water meter. Even if a force that tilts the stopper flexible piece outward is applied, the locking protrusion is prevented from being unlocked. This prevents the measurement unit from being disassembled inside the meter case. Furthermore, even when the measurement unit is detached from the meter case, the distal end portion of the locking flexible piece is moved to the outside unexpectedly, the locking state of the locking protrusions is released, and the measuring unit is disassembled. It is prevented.
[請求項4の発明]
請求項4の発明によれば、係止可撓片が先端受容部の上方に突出しているか否かにより、作業者は、係止突部同士が上下方向で係止しているか否かを認識できる。
[Invention of claim 4]
According to the invention of claim 4, the operator recognizes whether or not the locking protrusions are locked in the vertical direction depending on whether or not the locking flexible piece protrudes above the tip receiving portion. it can.
[請求項5の発明]
請求項5の発明によれば、互いに上下方向で係止した係止突部のうち少なくとも係止可撓片の内側面に配置された一方の係止突部には、他方の係止突部に徐々に乗り上がるための摺接傾斜面が形成されたので、係止可撓片を係合溝内で移動させる過程で係止突部の一方を他方にスムーズに乗り上げさせることができる。
[Invention of claim 5]
According to the fifth aspect of the present invention, of the locking protrusions locked in the vertical direction, at least one locking protrusion disposed on the inner surface of the locking flexible piece has the other locking protrusion. Since the sliding contact inclined surface for gradually climbing on is formed, one of the latching protrusions can be smoothly run on the other in the process of moving the latching flexible piece within the engagement groove.
また、計測ユニットをメータケースから取り外した状態で、先端受容部の内面と係止可撓片の内側面との間の工具挿入空間に帯板状の工具を挿入すると、工具が摺接傾斜面を摺接して係止突部と係合溝の底面との間に進入する。すると係止可撓片が外側に弾性変形して、係止突部同士の係止が解除され、計測ユニットを分解可能となる。 In addition, when the strip plate-like tool is inserted into the tool insertion space between the inner surface of the tip receiving portion and the inner surface of the locking flexible piece with the measuring unit removed from the meter case, the tool slides on the sloping contact surface. Slidably contact and enter between the locking projection and the bottom surface of the engaging groove. Then, the locking flexible piece is elastically deformed to the outside, the locking of the locking projections is released, and the measuring unit can be disassembled.
[請求項6の発明]
請求項6の発明によれば、表示盤の支持孔とギヤ支持盤の支持孔とが正規の組み合わせで対向した場合にのみ、全ての連結支柱の係合溝に全ての係止可撓片が挿入されるから、表示盤とギヤ支持盤との組付けミスを防止することができる。
[Invention of claim 6]
According to the sixth aspect of the present invention, only when the support hole of the display board and the support hole of the gear support board face each other in a proper combination, all the locking flexible pieces are inserted into the engaging grooves of all the connecting columns. Since it is inserted, an assembly error between the display panel and the gear support panel can be prevented.
[請求項7の発明]
請求項7の発明によれば、ギヤ支持盤のうち、上側の支持盤構成板に形成された支持孔をギヤの回転シャフトが貫通し、その回転シャフトの下端部が下側の支持盤構成板に突き当てられた状態でギヤが回転する。また、表示盤から垂下した複数の連結支柱と下側の支持盤構成板との間で上側の支持盤構成板を挟んで固定したので、上側の支持盤構成板のがたつきを防止することができる。
[Invention of Claim 7]
According to the seventh aspect of the present invention, the gear rotation shaft passes through the support hole formed in the upper support plate constituting plate of the gear support plate, and the lower end portion of the rotation shaft is the lower support plate constituting plate. The gear rotates in the state of being abutted against. In addition, since the upper support plate constituting plate is sandwiched and fixed between the plurality of connecting columns suspended from the display board and the lower support plate constituting plate, it is possible to prevent the upper support plate constituting plate from rattling. Can do.
以下、本発明の一実施形態を図1〜図11に基づいて説明する。本実施形態の水道メータ10に備えたメータケース11は、図1に示すように、鋳物製の下ケース12の内部に羽根車13と計測ユニット30とを収容して、その下ケース12の上端部に鋳物製の上ケース14を組み付けてなる。なお、本実施形態の水道メータ10は、計測ユニット30が水没する、所謂、湿式水道メータである。 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the meter case 11 provided in the water meter 10 of the present embodiment accommodates the impeller 13 and the measurement unit 30 in the lower case 12 made of casting, and the upper end of the lower case 12. The upper case 14 made of casting is assembled to the part. The water meter 10 according to the present embodiment is a so-called wet water meter in which the measurement unit 30 is submerged.
下ケース12は、上端開放の円筒状をなした円筒収容部15の下端部側の外周面から、相反する方向に一対の連結管部16,16を延設した構造をなす。そして、これら連結管部16,16が、図示しない水道管に連結されて、円筒収容部15の内部を水道水が通過する。 The lower case 12 has a structure in which a pair of connecting pipe portions 16 and 16 are extended in opposite directions from the outer peripheral surface on the lower end side of the cylindrical housing portion 15 having a cylindrical shape with an open upper end. And these connection pipe parts 16 and 16 are connected with the water pipe which is not shown in figure, and a tap water passes the inside of the cylindrical accommodating part 15. FIG.
上ケース14は、下ケース12のうち円筒収容部15の上端に、特殊工具にて螺合されており、上ケース14と計測ユニット30の上端部との間に挟まれた硝子板17を通して、計測ユニット30の上面に備えた、所謂、「円読式」の積算表示部59(本発明の「流量表示部」に相当する)を見ることができる。上ケース14と硝子板17の周縁部との間には押さえリング90が挟持され、下ケース12の上端部と硝子板17の周縁部との間にはOリング91が挟まれている。なお、上ケース14の外縁部には図示しないヒンジが備えられ、そのヒンジに上ケース14の上面を覆うための図示しない蓋体が回動可能に備えられている。 The upper case 14 is screwed to the upper end of the cylindrical housing portion 15 of the lower case 12 with a special tool, and passes through a glass plate 17 sandwiched between the upper case 14 and the upper end portion of the measurement unit 30. A so-called “circular reading” integration display unit 59 (corresponding to the “flow rate display unit” of the present invention) provided on the upper surface of the measurement unit 30 can be seen. A pressing ring 90 is sandwiched between the upper case 14 and the peripheral portion of the glass plate 17, and an O-ring 91 is interposed between the upper end portion of the lower case 12 and the peripheral portion of the glass plate 17. A hinge (not shown) is provided on the outer edge portion of the upper case 14, and a lid (not shown) for covering the upper surface of the upper case 14 is rotatably provided on the hinge.
羽根車13は、上下方向に延びた軸部19から放射状に複数の羽根20を張り出してなる。軸部19の軸心部には、下端から上下方向の中間位置まで軸受孔19Aが形成されている。そして、円筒収容部15の底面の中心から垂直に起立した支持ピン21が、軸部19の軸受孔19A内に挿入されて、支持ピン21の上端部が軸受孔19Aの上端側奥面に突き当てられている。この状態で、羽根20は円筒収容部15の底面から浮いた状態に保持され、円筒収容部15内を通過する水道水によって羽根車13が支持ピン21を中心にして回転する。また、軸部19の上端寄り位置には出力歯車13Hが備えられ、計測ユニット30に備えた複数のギヤ47のうちの1つと噛合している。なお、図1及び図3には、説明の便宜上、複数のギヤ47のうちの1つ又は2つのみが示されており、その他のギヤ47については省略されている。 The impeller 13 is formed by projecting a plurality of blades 20 radially from a shaft portion 19 extending in the vertical direction. A bearing hole 19 </ b> A is formed in the shaft center portion of the shaft portion 19 from the lower end to the middle position in the vertical direction. Then, the support pin 21 erected vertically from the center of the bottom surface of the cylindrical housing portion 15 is inserted into the bearing hole 19A of the shaft portion 19, and the upper end portion of the support pin 21 projects into the upper end side inner surface of the bearing hole 19A. It has been applied. In this state, the blade 20 is held in a state of floating from the bottom surface of the cylindrical housing portion 15, and the impeller 13 rotates around the support pin 21 by tap water passing through the cylindrical housing portion 15. Further, an output gear 13 </ b> H is provided at a position near the upper end of the shaft portion 19, and meshes with one of the plurality of gears 47 provided in the measurement unit 30. In FIGS. 1 and 3, only one or two of the plurality of gears 47 are shown for convenience of explanation, and the other gears 47 are omitted.
下ケース12の円筒収容部15には、底側に羽根車13を収容した状態で上端側に計測ユニット30が組み付けられ、この計測ユニット30にて、円筒収容部15の上端開口が閉塞されている。図3に示すように、計測ユニット30は、その上端寄りの外周面に形成された段付部38が、円筒収容部15の上端開口側の内周面に形成された段付部58と嵌合して上下方向で位置決めされている。また、これら段付部38,58の間には凹凸係合部39(図1を参照)が備えられ、これにより計測ユニット30が円筒収容部15に対して周方向で位置決め及び回り止めされている。計測ユニット30のうち、段付部38より上側部分は円筒収容部15の内周面に接触した状態で嵌合しており、段付部38より下側部分は、円筒収容部15の円筒内面との間に僅かな隙間54(図3を参照)を空けて嵌合している。 A measuring unit 30 is assembled on the upper end side of the cylindrical housing portion 15 of the lower case 12 with the impeller 13 accommodated on the bottom side, and the upper end opening of the cylindrical housing portion 15 is closed by the measuring unit 30. Yes. As shown in FIG. 3, the measurement unit 30 has a stepped portion 38 formed on the outer peripheral surface near the upper end thereof fitted with a stepped portion 58 formed on the inner peripheral surface on the upper end opening side of the cylindrical housing portion 15. They are positioned in the vertical direction. Further, an uneven engagement portion 39 (see FIG. 1) is provided between the stepped portions 38 and 58, whereby the measuring unit 30 is positioned and prevented from rotating in the circumferential direction with respect to the cylindrical housing portion 15. Yes. Of the measuring unit 30, the upper part from the stepped part 38 is fitted in contact with the inner peripheral surface of the cylindrical housing part 15, and the lower part from the stepped part 38 is the cylindrical inner surface of the cylindrical housing part 15. And a small gap 54 (see FIG. 3).
図4に示すように、計測ユニット30は、上下方向で離して対向配置された表示盤31とギヤ支持盤32との間を複数(本実施形態では3つ)の連結支柱52で連結し、それら表示盤31とギヤ支持盤32との間に、互いに噛合した複数のギヤ47(図4には説明の便宜上、1つのみが示されている)を回転可能に軸支した構造をなす。なお、表示盤31及びギヤ支持盤32はいずれも合成樹脂で構成されている。 As shown in FIG. 4, the measurement unit 30 connects the display board 31 and the gear support board 32 that are arranged opposite to each other in the vertical direction with a plurality (three in this embodiment) of connection columns 52. Between the display board 31 and the gear support board 32, a plurality of gears 47 engaged with each other (only one is shown in FIG. 4 for convenience of explanation) is rotatably supported. The display board 31 and the gear support board 32 are both made of synthetic resin.
ギヤ支持盤32は、図5に示すように、表示盤31に対面した下台板40と、下台板40の下面に宛がわれた受け板41とに分割可能となっている。下台板40と受け板41は同一径の円板形状をなしており、それらの間には僅かな隙間44が設けられている(図4を参照)。なお、受け板41の下面には、受け板41とは別部品で構成された整流壁45が螺旋止めされている。ここで、下台板40と受け板41は、本発明の「支持盤構成板」に相当する。 As shown in FIG. 5, the gear support board 32 can be divided into a lower base plate 40 facing the display board 31 and a receiving plate 41 addressed to the lower surface of the lower base board 40. The lower base plate 40 and the receiving plate 41 have a disk shape with the same diameter, and a slight gap 44 is provided between them (see FIG. 4). Note that a rectifying wall 45 made of a separate part from the receiving plate 41 is screwed to the lower surface of the receiving plate 41. Here, the lower base plate 40 and the receiving plate 41 correspond to the “support plate constituting plate” of the present invention.
下台板40と受け板41の中心部には、軸部挿通孔46,46が貫通形成されており、この軸部挿通孔46,46に、羽根車13の軸部19が遊嵌状態で貫通している(図1を参照)。そして、軸部19の上端寄り位置に備えた出力歯車13Hが、ギヤ47の1つに噛合している。なお、下台板40に形成された軸部挿通孔46は、受け板41に形成された軸部挿通孔46より大径となっている。 Shaft portion insertion holes 46 and 46 are formed through the center portion of the lower base plate 40 and the receiving plate 41, and the shaft portion 19 of the impeller 13 passes through the shaft portion insertion holes 46 and 46 in a loosely fitted state. (See FIG. 1). An output gear 13 </ b> H provided at a position near the upper end of the shaft portion 19 meshes with one of the gears 47. The shaft insertion hole 46 formed in the lower base plate 40 has a larger diameter than the shaft insertion hole 46 formed in the receiving plate 41.
図6に示すように、ギヤ47の中心部からは上下に回転シャフト47Bが突出形成されている。回転シャフト47Bの両端部は、表示盤31に形成された支持孔33と下台板40に形成された支持孔42とよって垂直状態で軸支されている。また、回転シャフト47Bの下端部は、支持孔42を貫通して受け板41の上面に突き当たっている。ここで、回転シャフト47Bの下端部は半球状をなしているので、回転シャフト47Bの下端部と受け板41との摩擦が低減される。また、仮に、回転シャフト47Bの下端部と受け板41との摩擦により摩耗粉が発生しても、摩耗粉を下台板40と受け板41との間の隙間44から逃がすことができるので、摩耗粉によるギヤ47の回転不良を防止することができる。 As shown in FIG. 6, a rotating shaft 47 </ b> B is formed to protrude from the center of the gear 47 in the vertical direction. Both ends of the rotating shaft 47B are pivotally supported in a vertical state by a support hole 33 formed in the display panel 31 and a support hole 42 formed in the lower base plate 40. Further, the lower end portion of the rotation shaft 47B penetrates the support hole 42 and abuts against the upper surface of the receiving plate 41. Here, since the lower end portion of the rotating shaft 47B is hemispherical, friction between the lower end portion of the rotating shaft 47B and the receiving plate 41 is reduced. Further, even if wear powder is generated due to friction between the lower end portion of the rotating shaft 47B and the receiving plate 41, the wear powder can be released from the gap 44 between the lower base plate 40 and the receiving plate 41. The rotation failure of the gear 47 due to powder can be prevented.
ギヤ47の回転シャフト47Bのうち、表示盤31の支持孔33を貫通した回転シャフト47Bの上端部には、回転指針49又はパイロット50の何れかが装着されている。これら回転指針49及びパイロット50と表示盤31の上面に敷設された文字板36とによって図2に示す積算表示部59が構成されている。 Of the rotation shaft 47B of the gear 47, either the rotation pointer 49 or the pilot 50 is attached to the upper end portion of the rotation shaft 47B passing through the support hole 33 of the display panel 31. The rotation indicator 49, the pilot 50, and the dial 36 laid on the upper surface of the display board 31 constitute an integrated display section 59 shown in FIG.
そして、円筒収容部15内を通過する水道水によって羽根車13が回転すると、計測ユニット30に備えた複数のギヤ47が連動回転し、積算表示部59にて水道メータ10を通過した水道水の積算流量が表示される。 When the impeller 13 is rotated by the tap water passing through the cylindrical housing portion 15, the plurality of gears 47 provided in the measurement unit 30 are rotated in conjunction with each other, and the tap water that has passed through the water meter 10 at the integration display portion 59. The accumulated flow is displayed.
計測ユニット30のうち、表示盤31は、円筒収容部15に嵌合される円筒壁31Bの下面に底壁31Aを有し、全体として下端有底の扁平な円筒形状になっている。図5に示すように、底壁31Aの所定位置には複数の支持孔33が貫通形成され、底壁31Aの下面中央からは下端開口の円筒ボス34が突出している。図3に示すように円筒ボス34の中心部には金属製の軸受け部材35が組み付けられ、ここに羽根車13の軸部19の上端部が回転可能に軸支されている(図1を参照)。また、底壁31Aの上面には、前記文字板36が敷設されている。文字板36は薄円板状をなし、円筒壁31Bの内面から内側に突出した複数の押さえ突部37と、底壁31Aから起立した複数の係止爪93とによって底壁31Aの上面に固定されている(図2、図3及び図9を参照)。 In the measurement unit 30, the display panel 31 has a bottom wall 31A on the lower surface of a cylindrical wall 31B fitted to the cylindrical housing portion 15, and has a flat cylindrical shape with a bottom at the bottom as a whole. As shown in FIG. 5, a plurality of support holes 33 are formed through a predetermined position of the bottom wall 31A, and a cylindrical boss 34 with a lower end opening projects from the bottom center of the bottom wall 31A. As shown in FIG. 3, a metal bearing member 35 is assembled at the center of the cylindrical boss 34, and the upper end portion of the shaft portion 19 of the impeller 13 is rotatably supported by the shaft (see FIG. 1). ). The dial 36 is laid on the upper surface of the bottom wall 31A. The dial 36 has a thin disc shape and is fixed to the upper surface of the bottom wall 31A by a plurality of pressing protrusions 37 protruding inward from the inner surface of the cylindrical wall 31B and a plurality of locking claws 93 rising from the bottom wall 31A. (See FIGS. 2, 3 and 9).
図5に示すように、表示盤31には連結支柱52が一体形成されている。連結支柱52は、底壁31Aの外周縁寄り位置からギヤ支持盤32に向かって垂直に延びた片持ち梁状をなしている。3つの連結支柱52は、計測ユニット30の周方向に沿って配置されており、周方向で隣り合った連結支柱52同士の間隔は、少なくとも一箇所で他の箇所と異なるように配置されている。本実施形態では、隣り合った連結支柱52同士の間隔が、例えば、125°、125°、110°となるように配置されている。また、ギヤ47の配置スペースをなるべく広く確保するために、連結支柱52の横幅は、計測ユニット30の内側に向かうに従ってテーパー状に幅狭となっている。 As shown in FIG. 5, a connecting column 52 is integrally formed on the display panel 31. The connecting column 52 has a cantilever shape extending vertically from the position near the outer peripheral edge of the bottom wall 31 </ b> A toward the gear support board 32. The three connection columns 52 are arranged along the circumferential direction of the measurement unit 30, and the interval between the connection columns 52 adjacent to each other in the circumferential direction is arranged so as to be different from other portions at least at one place. . In this embodiment, it arrange | positions so that the space | interval of adjacent connection support | pillars 52 may become 125 degrees, 125 degrees, and 110 degrees, for example. Further, in order to secure the space for disposing the gear 47 as much as possible, the lateral width of the connecting column 52 is tapered in a taper shape toward the inner side of the measurement unit 30.
連結支柱52の下端面からは円柱ボス62が突出しており、この円柱ボス62が下台板40に形成された係合孔部65に凹凸嵌合している。これにより、表示盤31と下台板40とが位置決めされている。 A cylindrical boss 62 protrudes from the lower end surface of the connecting column 52, and the cylindrical boss 62 is engaged with an engaging hole 65 formed in the lower base plate 40. Thereby, the display panel 31 and the lower base plate 40 are positioned.
連結支柱52の外側面には、係合溝60が陥没形成されている。係合溝60は、連結支柱52の横幅方向の中央部分にて上下方向に延びている。また、係合溝60の水平断面は、幅寸法に対して深さ寸法が小さい扁平な「凹」字形状をなしている。 Engagement grooves 60 are recessed in the outer surface of the connecting column 52. The engaging groove 60 extends in the up-down direction at the central portion of the connecting column 52 in the lateral width direction. Further, the horizontal cross section of the engagement groove 60 has a flat “concave” shape having a depth dimension smaller than the width dimension.
係合溝60の内側には、外側に向かって突出した第1係止突部61(本発明の「係止突部」に相当する)が形成されている。第1係止突部61は、連結支柱52の上下方向における中央部よりやや下側位置に設けられており、上方に向かうに従って外側に迫り出した矢尻状をなしている。詳細には、図3に示すように、第1係止突部61は、上方に向かうに従って係合溝60の底面から外側に迫り出すように傾斜した突部摺接テーパー面61A(本発明の「摺接傾斜面」に相当する)と、係合溝60の底面に対して直角でかつ上方を向いた係止段差面61Bとを有している。 A first locking protrusion 61 (corresponding to the “locking protrusion” of the present invention) protruding outward is formed inside the engagement groove 60. The first locking projection 61 is provided at a position slightly below the central portion in the vertical direction of the connecting column 52, and has an arrowhead shape that protrudes outward as it goes upward. Specifically, as shown in FIG. 3, the first locking protrusion 61 has a protrusion sliding contact tapered surface 61 </ b> A (in accordance with the present invention) inclined so as to protrude outward from the bottom surface of the engagement groove 60 as it goes upward. Corresponding to a “sliding contact inclined surface”, and a locking step surface 61B that is perpendicular to the bottom surface of the engagement groove 60 and faces upward.
ここで、表示盤31のうち係合溝60の延長線上には、底壁31Aを上下に貫通した表示盤貫通孔64が形成されている。また下台板40のうち、係合溝60の延長線上に位置する部分には切り欠き部63が形成されている。なお、切り欠き部63は、下台板40の径方向外側に開放しており、係合溝60の水平断面に対応して扁平な「凹」字形状をなしている。また、切り欠き部63と前記した係合孔部65は下台板40の径方向に並んで設けられており、これら係合孔部65と切り欠き部63とは連続形成されている(図5を参照)。 Here, on the extension line of the engagement groove 60 in the display panel 31, a display panel through hole 64 penetrating vertically through the bottom wall 31A is formed. Further, a notch portion 63 is formed in a portion of the lower base plate 40 located on the extension line of the engagement groove 60. The notch 63 is open to the outside in the radial direction of the lower base plate 40, and has a flat “concave” shape corresponding to the horizontal cross section of the engagement groove 60. Further, the notch 63 and the engagement hole 65 described above are provided side by side in the radial direction of the lower base plate 40, and the engagement hole 65 and the notch 63 are continuously formed (FIG. 5). See).
図4に示すように、ギヤ支持盤32のうち受け板41には、上記連結支柱52の外側に重ねて係止される3つの係止可撓片53が一体形成されている。各係止可撓片53は、受け板41の外縁部から表示盤31に向かって垂直に起立した片持ち梁状をなしている。係止可撓片53は、受け板41の周方向に沿って配置されており、周方向で隣り合った係止可撓片53同士の間隔が、上記した3つの連結支柱52の位置に対応させてある。即ち、隣り合った係止可撓片53同士の間隔が、例えば、125°、125°、110°となるように配置されており、各係止可撓片53は、連結支柱52に形成された係合溝60に受容されている。 As shown in FIG. 4, on the receiving plate 41 of the gear support board 32, three locking flexible pieces 53 that are stacked and locked on the outer side of the connecting column 52 are integrally formed. Each of the locking flexible pieces 53 has a cantilever shape standing vertically from the outer edge portion of the receiving plate 41 toward the display panel 31. The locking flexible pieces 53 are arranged along the circumferential direction of the receiving plate 41, and the interval between the locking flexible pieces 53 adjacent in the circumferential direction corresponds to the positions of the three connecting columns 52 described above. I'm allowed. That is, the spacing between the adjacent locking flexible pieces 53 is, for example, 125 °, 125 °, and 110 °, and each locking flexible piece 53 is formed on the connecting column 52. Is received in the engaging groove 60.
図5に示すように、係止可撓片53は上下方向で一定幅の帯板状をなしている。係止可撓片53の内側面のうち、上下方向の中間位置には第2係止突部55(本発明の「係止突部」に相当する)が形成されている。第2係止突部55は、下方に向かうに従って内側に迫り出した矢尻状をなしている。詳細には、図3に示すように、第2係止突部55は、下方に向かうに従って係止可撓片53の内側面から離れるように傾斜した突部摺接テーパー面55A(本発明の「摺接傾斜面」に相当する)と、係止可撓片53の内側面に対して直角でかつ下方を向いた係止段差面55Bとを有している。 As shown in FIG. 5, the locking flexible piece 53 has a band plate shape with a constant width in the vertical direction. A second locking projection 55 (corresponding to the “locking projection” of the present invention) is formed at an intermediate position in the vertical direction on the inner side surface of the locking flexible piece 53. The second locking projection 55 has an arrowhead shape that protrudes inward as it goes downward. Specifically, as shown in FIG. 3, the second locking protrusion 55 has a protrusion sliding contact tapered surface 55 </ b> A (in accordance with the present invention) that is inclined away from the inner surface of the locking flexible piece 53 as it goes downward. And a locking step surface 55B that is perpendicular to the inner surface of the locking flexible piece 53 and faces downward.
また、係止可撓片53の上端寄り位置には屈曲部が形成され、その屈曲部より上方部分が、受け板41の径方向外側に突出した段付突片56となっている。段付突片56は、表示盤貫通孔64を貫通して表示盤31の底壁31Aの上面側に突出しかつ、その外側面に円筒壁31Bの内周面が宛がわれている。なお、係止可撓片53のうち屈曲部の内面は、下方に向かうに従って内側に迫り出したテーパー面57になっている。表示盤貫通孔64は、本発明の「先端受容部」に相当する。 Further, a bent portion is formed at a position near the upper end of the locking flexible piece 53, and a portion above the bent portion is a stepped protruding piece 56 protruding outward in the radial direction of the receiving plate 41. The stepped protrusion 56 passes through the display panel through hole 64 and protrudes to the upper surface side of the bottom wall 31A of the display panel 31, and the inner peripheral surface of the cylindrical wall 31B is assigned to the outer surface thereof. The inner surface of the bent portion of the locking flexible piece 53 is a tapered surface 57 that protrudes inward as it goes downward. The display panel through hole 64 corresponds to the “tip receiving portion” of the present invention.
受け板41の上面には、下台板40に向かって僅かに隆起した隆起部43が形成されている。隆起部43は係止可撓片53の基端部近傍部分にそれぞれ設けられており、この隆起部43が下台板40の下面に突き当たって前記隙間44が形成されている。また、受け板41のうち、係止可撓片53の基端部近傍部分にはスリット66が貫通形成されている。このスリット66と下台板40の切り欠き部63と連結支柱52の係合溝60とが上下方向で連通している。 On the upper surface of the receiving plate 41, a raised portion 43 that slightly protrudes toward the lower base plate 40 is formed. The raised portions 43 are provided in the vicinity of the proximal end portion of the locking flexible piece 53, and the raised portions 43 abut against the lower surface of the lower base plate 40 to form the gap 44. Further, a slit 66 is formed through the receiving plate 41 in the vicinity of the base end portion of the locking flexible piece 53. The slit 66, the notch 63 of the lower base plate 40, and the engagement groove 60 of the connecting column 52 communicate with each other in the vertical direction.
そして、図3及び図4に示すように、連結支柱52の係合溝60に係止可撓片53が受容され、係止可撓片53の第2係止突部55と連結支柱52の第1係止突部61とが係止する(詳細には、係止段差面55B,61B同士が突き当たる)と、表示盤31とギヤ支持盤32とが、それらの間に複数のギヤ47を軸支した状態で一体に固定される。 As shown in FIGS. 3 and 4, the locking flexible piece 53 is received in the engaging groove 60 of the connecting column 52, and the second locking protrusion 55 of the locking flexible piece 53 and the connecting column 52 are connected. When the first locking projection 61 is locked (specifically, the locking step surfaces 55B and 61B abut each other), the display board 31 and the gear support board 32 have a plurality of gears 47 between them. It is fixed integrally with the shaft supported.
本実施形態の水道メータ10及び計測ユニット30の構成の説明は以上であって、次に水道メータ10及び計測ユニット30の製造方法について説明する。 Description of the structure of the water meter 10 and the measurement unit 30 of this embodiment is above, and the manufacturing method of the water meter 10 and the measurement unit 30 is demonstrated next.
計測ユニット30を製造する場合には、図7のように表示盤31を上下逆さまにしておき、その表示盤31の各支持孔33にギヤ47の回転シャフト47Bの上端を軸支させる。 When the measurement unit 30 is manufactured, the display board 31 is turned upside down as shown in FIG. 7, and the upper end of the rotation shaft 47 </ b> B of the gear 47 is pivotally supported by each support hole 33 of the display board 31.
次に、下台板40の3つの切り欠き部63と、表示盤31の3つの連結支柱52とが上下方向で重なるように位置を合わせて、下台板40を連結支柱52の下端面から突出した円柱ボス62と、下台板40の各係合孔部65とを凹凸嵌合させる。すると、表示盤31に軸支された各ギヤ47の回転シャフト47Bの下端が、下台板40の各支持孔42にそれぞれ挿入されて、回転シャフト47Bの上下両端が表示盤31と下台板40との間で軸支される。また、このとき、連結支柱52の係合溝60と下台板40の切り欠き部63とが上下方向で整合する。 Next, the positions of the three notches 63 of the lower base plate 40 and the three connecting columns 52 of the display panel 31 are aligned in the vertical direction, and the lower base plate 40 protrudes from the lower end surface of the connecting column 52. The cylindrical boss 62 and the respective engagement hole portions 65 of the lower base plate 40 are engaged with each other. Then, the lower end of the rotation shaft 47B of each gear 47 supported by the display board 31 is inserted into each support hole 42 of the lower base plate 40, and the upper and lower ends of the rotation shaft 47B are connected to the display board 31 and the lower base plate 40. Is pivoted between. At this time, the engaging groove 60 of the connecting column 52 and the notch 63 of the lower base plate 40 are aligned in the vertical direction.
次いで、受け板41から延びた3つの係止可撓片53と、表示盤31から延びた3つの連結支柱52とが全て同一軸線上になるように位置を合わせて、受け板41を表示盤31に近づける。すると、各係止可撓片53が係合溝60の下端側から進入して係合溝60内を表示盤31に向かってスライドし、途中で係合溝60に備えた第1係止突部61と係止可撓片53に備えた第2係止突部55とが当接する。このとき、係止可撓片53の先端部(段付突片56)が表示盤31の表示盤貫通孔64に突入する(図8を参照)。 Next, the receiving plate 41 is placed on the display board by aligning the positions of the three locking flexible pieces 53 extending from the receiving board 41 and the three connecting columns 52 extending from the display board 31 on the same axis. Close to 31. Then, each locking flexible piece 53 enters from the lower end side of the engaging groove 60 and slides toward the display panel 31 in the engaging groove 60, and the first locking protrusion provided in the engaging groove 60 in the middle. The part 61 and the second locking projection 55 provided on the locking flexible piece 53 come into contact with each other. At this time, the distal end portion (stepped protrusion 56) of the locking flexible piece 53 enters the display board through hole 64 of the display board 31 (see FIG. 8).
この状態で受け板41を表示盤31側へ押圧すると、第2係止突部55に形成された突部摺接テーパー面55Aと、第1係止突部61の突部摺接テーパー面61Aとが互いに摺接し、第2係止突部55がスムーズに第1係止突部61に乗り上がる。このとき、係止可撓片53の先端部は、表示盤貫通孔64に受容されているので、図9に示すように各係止可撓片53は、その上下方向の両端部から中央に向かうに従って外側に膨らむように弓なりに弾性変形する。そして、係止可撓片53の外側に膨らんだ部分は係合溝60の外側にはみ出す。 When the receiving plate 41 is pressed toward the display panel 31 in this state, the protrusion sliding contact tapered surface 55A formed on the second locking protrusion 55 and the protrusion sliding contact tapered surface 61A of the first locking protrusion 61 are provided. Are in sliding contact with each other, and the second locking projection 55 smoothly rides on the first locking projection 61. At this time, since the distal end portion of the locking flexible piece 53 is received in the display panel through hole 64, each locking flexible piece 53 is centered from both ends in the vertical direction as shown in FIG. As it goes, it elastically deforms like a bow so that it swells outward. The portion that swells outside the locking flexible piece 53 protrudes outside the engaging groove 60.
この状態から、さらに受け板41を押圧すると、第2係止突部55が第1係止突部61を乗り越えて、各係止可撓片53がその弾発力により元の真っ直ぐな形状に復元し、第2係止突部55と第1係止突部61とが係止される。これにより、係止可撓片53の全体が係合溝60に受容されて、連結支柱52の外面と係止可撓片53の外面とがほぼ面一となる。またこのとき、受け板41の隆起部43が下台板40に面当接して、下台板40が連結支柱52の下端面と受け板41との間で挟持される。さらに、係止可撓片53の上端部(段付突片56)が表示盤貫通孔64から表示盤31の上面側に突出し、円筒壁31Bの内周面に宛がわれる。ここで、作業者は、第2係止突部55が第1係止突部61を乗り越えて係止可撓片53が復元した際のクリック感や、第1係止突部61と係止可撓片53との衝突音、さらには、係止可撓片53の上端部(段付突片56)が表示盤貫通孔64から突出したこと等により、連結支柱52と係止可撓片53とが係止されたことを認識できる。以上により、表示盤31、下台板40及び受け板41が一体に固定されかつ、表示盤31とギヤ支持盤32との間に複数のギヤ47が回転可能に軸支される。 When the receiving plate 41 is further pressed from this state, the second locking projections 55 get over the first locking projections 61, and each locking flexible piece 53 is restored to its original straight shape by its elastic force. The second locking projection 55 and the first locking projection 61 are locked by restoring. As a result, the entire locking flexible piece 53 is received in the engaging groove 60, and the outer surface of the connecting column 52 and the outer surface of the locking flexible piece 53 are substantially flush. At this time, the raised portion 43 of the receiving plate 41 comes into surface contact with the lower base plate 40, and the lower base plate 40 is sandwiched between the lower end surface of the connecting column 52 and the receiving plate 41. Further, the upper end portion (stepped protrusion 56) of the locking flexible piece 53 protrudes from the display panel through hole 64 to the upper surface side of the display panel 31, and is directed to the inner peripheral surface of the cylindrical wall 31B. Here, the operator clicks when the second locking protrusion 55 gets over the first locking protrusion 61 and the locking flexible piece 53 is restored, or the first locking protrusion 61 is locked. Due to the impact sound with the flexible piece 53 and the upper end portion (stepped protrusion 56) of the locking flexible piece 53 protruding from the display panel through hole 64, etc. 53 can be recognized. As described above, the display panel 31, the lower base plate 40, and the receiving plate 41 are integrally fixed, and the plurality of gears 47 are rotatably supported between the display panel 31 and the gear support panel 32.
この後、表示盤31の底壁31Aの上面に文字板36を敷設し、さらに、底壁31Aの上面側に突出したギヤ47の回転シャフト47Bに、回転指針49及びパイロット50を装着すれば、計測ユニット30が完成である。ここで、係止可撓片53の上端部に備えた段付突片56の外側面に円筒壁31Bの内周面が宛がわれているので、係止可撓片53の上端を径方向外側に傾動させることは不可能である。これにより、計測ユニット30を取り扱う際に、係止可撓片53と連結支柱52の係止が意に反して解除され、計測ユニット30が分解されることが防止される。 Thereafter, the dial 36 is laid on the upper surface of the bottom wall 31A of the display panel 31, and the rotation pointer 49 and the pilot 50 are mounted on the rotation shaft 47B of the gear 47 protruding to the upper surface side of the bottom wall 31A. The measurement unit 30 is complete. Here, since the inner peripheral surface of the cylindrical wall 31B is assigned to the outer surface of the stepped protrusion 56 provided at the upper end of the locking flexible piece 53, the upper end of the locking flexible piece 53 is set in the radial direction. It is impossible to tilt it outward. Accordingly, when the measuring unit 30 is handled, the locking of the locking flexible piece 53 and the connecting column 52 is released unexpectedly, and the measuring unit 30 is prevented from being disassembled.
次に、本実施形態の水道メータ10は以下のようにして製造される。まず、下ケース12の円筒収容部15内に羽根車13を挿入し、軸部19に備えた軸受孔19Aに支持ピン21を挿入する。次いで、上述した計測ユニット30を円筒収容部15の上端開口から挿入して、表示盤31の外周面と、円筒収容部15の内周面とに備えた段付部38,58同士を嵌合させる。 Next, the water meter 10 of this embodiment is manufactured as follows. First, the impeller 13 is inserted into the cylindrical housing portion 15 of the lower case 12, and the support pin 21 is inserted into the bearing hole 19 </ b> A provided in the shaft portion 19. Next, the measurement unit 30 described above is inserted from the upper end opening of the cylindrical housing portion 15, and the stepped portions 38 and 58 provided on the outer peripheral surface of the display panel 31 and the inner peripheral surface of the cylindrical housing portion 15 are fitted to each other. Let
すると、羽根車13の軸部19が、計測ユニット30の軸部挿通孔46,46を貫通して、その上端部が表示盤31の軸受け部材35によって軸支されると共に、軸部19に備えた出力歯車13Hが、計測ユニット30に備えたギヤ47の1つ(入力ギヤ)に噛合する。そして、円筒収容部15の上端部にOリング91を載せ、計測ユニット30の上端部に硝子板17を載せ、さらに、硝子板17の上面に押さえリング90を載せて、上ケース14を下ケース12(円筒収容部15)の上端部に締め付けると、図1に示す本実施形態の水道メータ10が完成する。 Then, the shaft portion 19 of the impeller 13 passes through the shaft portion insertion holes 46, 46 of the measurement unit 30, and the upper end portion thereof is pivotally supported by the bearing member 35 of the display panel 31 and is provided in the shaft portion 19. The output gear 13H meshes with one of the gears 47 (input gear) provided in the measurement unit 30. The O-ring 91 is placed on the upper end of the cylindrical housing 15, the glass plate 17 is placed on the upper end of the measuring unit 30, and the holding ring 90 is placed on the upper surface of the glass plate 17, and the upper case 14 is placed on the lower case. If it fastens to the upper end part of 12 (cylindrical accommodating part 15), the water meter 10 of this embodiment shown in FIG. 1 will be completed.
ここで本実施形態の水道メータ10では、計測ユニット30を下ケース12に嵌合させると、連結支柱52の外側面に係止した係止可撓片53の外側に、円筒収容部15の円筒内面が隙間54を介して近接配置される。この隙間54は、第2係止突部55が第1係止突部61に乗り上がって係止可撓片53が弓なりに弾性変形したときの外側への膨らみ量(係合溝60からのはみ出し量)よりも狭くなっている。従って、計測ユニット30が下ケース12(円筒収容部15)に嵌合することでも、第2係止突部55と第1係止突部61との係止解除が防止される。 Here, in the water meter 10 of the present embodiment, when the measurement unit 30 is fitted to the lower case 12, the cylinder of the cylindrical housing portion 15 is disposed outside the locking flexible piece 53 locked to the outer surface of the connecting column 52. The inner surfaces are arranged close to each other through the gap 54. This gap 54 is the amount of outward bulging when the second locking projection 55 rides on the first locking projection 61 and the locking flexible piece 53 is elastically deformed like a bow (from the engagement groove 60). It is narrower than the amount of protrusion). Accordingly, even when the measurement unit 30 is fitted into the lower case 12 (cylindrical housing portion 15), the unlocking of the second locking projection 55 and the first locking projection 61 is prevented.
ところで、本実施形態の水道メータ10に使用される計測ユニット30は分解可能となっており、計測ユニット30を構成する部品を交換・修理して継続的に使用できるようになっている。計測ユニット30の分解は以下のようにして行う。 By the way, the measurement unit 30 used for the water meter 10 of this embodiment can be disassembled, and can be used continuously by exchanging / repairing parts constituting the measurement unit 30. The measurement unit 30 is disassembled as follows.
まず、計測ユニット30をメータケース11から取り出す。次いで、表示盤31の表示盤貫通孔64の内面と係止可撓片53の内側面との間の隙間(本発明の「工具挿入空間」に相当する)から係合溝60内に薄帯板状の係止解除用工具80を挿入して(図11の(A)を参照)、それを下方に押し込む。すると、係止解除用工具80が第2係止突部55の突部摺接テーパー面55Aに案内されて第2係止突部55と係合溝60の底面との間に進入し、第1係止突部61の係止段差面61Bに突き当たる。このとき、第2係止突部55が係止解除用工具80によって外側に押し出されて係止可撓片53が、前述の如く外側に膨らむように弓なりに弾性変形し、第2係止突部55が第1係止突部61に乗り上がって係止状態が解除される(図11の(B)の状態)。他の連結支柱52に対しても同様に、係止解除用工具80によって第2係止突部55と第1係止突部61との係止状態を解除する。この状態で、例えば、表示盤31の上面側に突出した係止可撓片53の上端部を下方に押して係止可撓片53を下方へスライドさせると、突部摺接テーパー面55A,61A同士が摺接し、係止可撓片53が復元する際の弾発力により受け板41が自ら表示盤31から離れるように移動する(図11の(C)の状態)。これにより、表示盤31と受け板41とが分離され、計測ユニット30を表示盤31、下台板40、受け板41及びギヤ47等の部品単位に分解することができる。 First, the measurement unit 30 is taken out from the meter case 11. Next, a ribbon is formed in the engagement groove 60 from a gap (corresponding to the “tool insertion space” of the present invention) between the inner surface of the display panel through hole 64 of the display panel 31 and the inner surface of the locking flexible piece 53. A plate-like unlocking tool 80 is inserted (see FIG. 11A) and pushed downward. Then, the locking release tool 80 is guided by the protruding sliding contact tapered surface 55A of the second locking projection 55 and enters between the second locking projection 55 and the bottom surface of the engagement groove 60, and the second It abuts against the locking step surface 61B of the one locking projection 61. At this time, the second locking projection 55 is pushed outward by the locking release tool 80, and the locking flexible piece 53 is elastically deformed like a bow so as to bulge outward as described above. The portion 55 rides on the first locking projection 61 and the locked state is released (the state shown in FIG. 11B). Similarly, the locking state between the second locking projection 55 and the first locking projection 61 is also released with respect to the other connecting columns 52 by the locking release tool 80. In this state, for example, when the upper end portion of the locking flexible piece 53 protruding to the upper surface side of the display board 31 is pushed downward and the locking flexible piece 53 is slid downward, the protrusion sliding contact taper surfaces 55A and 61A. The receiving plates 41 are moved away from the display panel 31 by the elastic force generated when the locking flexible pieces 53 are restored (the state shown in FIG. 11C). Thereby, the display board 31 and the receiving plate 41 are separated, and the measuring unit 30 can be disassembled into parts such as the display board 31, the lower base plate 40, the receiving plate 41, and the gear 47.
このように本実施形態によれば、表示盤31からギヤ支持盤32に向かって延びた連結支柱52の外面側に係合溝60を形成してその内側に第1係止突部61を備える一方、ギヤ支持盤32のうち受け板41から表示盤31に向かって延びた係止可撓片53の内面側に第2係止突部55を備え、それら第2係止突部55と第1係止突部61とを係止させることで、表示盤31とギヤ支持盤32とが一体に固定されるように構成した。詳細には、係止可撓片53が連結支柱52に形成された係合溝60内を移動する途中で、第1係止突部61と第2係止突部55とが摺接して係止可撓片53が外側に弾性変形し、第1係止突部61が第2係止突部55を乗り越えたときに係止可撓片53が弾発力により復元して第1係止突部61と第2係止突部55とが係止される。これにより、従来のビスによる固定に比べて組み立ての作業性が向上する。また、ビスが不要となることに伴う部品コストの削減やビス孔加工の省略化により製造コストの削減が図られる。 As described above, according to the present embodiment, the engaging groove 60 is formed on the outer surface side of the connecting column 52 extending from the display panel 31 toward the gear support board 32, and the first locking protrusion 61 is provided on the inner side. On the other hand, a second locking projection 55 is provided on the inner surface side of the locking flexible piece 53 extending from the receiving plate 41 toward the display panel 31 in the gear support plate 32, and the second locking projection 55 and the second locking projection 55 are provided. The display board 31 and the gear support board 32 are integrally fixed by locking the one locking protrusion 61. Specifically, the first locking projection 61 and the second locking projection 55 are slidably engaged with each other while the locking flexible piece 53 moves in the engagement groove 60 formed in the connecting column 52. The locking flexible piece 53 is elastically deformed to the outside, and when the first locking projection 61 gets over the second locking projection 55, the locking flexible piece 53 is restored by the elastic force and the first locking projection 61 The protrusion 61 and the second locking protrusion 55 are locked. Thereby, the workability of the assembly is improved as compared with the fixing with the conventional screw. In addition, it is possible to reduce the manufacturing cost by reducing the parts cost accompanying the elimination of the screw and omitting the screw hole processing.
また、計測ユニット30をメータケース11の下ケース12に嵌合すると、係止可撓片53の外側に円筒収容部15の円筒内面が近接配置されて、係止可撓片53の外側への弾性変形が規制されるので、ギヤ支持盤32(受け板41)が水圧により反って係止可撓片53を外側へ弾性変形させる力がかかったとしても、第1係止突部61と第2係止突部55との係止解除が防止される。これにより、メータケース11の内部で、計測ユニット30が分解することが防がれる。 Further, when the measuring unit 30 is fitted into the lower case 12 of the meter case 11, the cylindrical inner surface of the cylindrical housing portion 15 is disposed close to the outside of the locking flexible piece 53, and the outside of the locking flexible piece 53 is moved to the outside. Since the elastic deformation is restricted, even if the gear support plate 32 (the receiving plate 41) is warped by water pressure and a force is applied to elastically deform the locking flexible piece 53 outward, the first locking protrusion 61 and the first Unlocking with the two locking projections 55 is prevented. This prevents the measurement unit 30 from being disassembled inside the meter case 11.
また、計測ユニット30を分解する際には、係止解除用工具80を表示盤貫通孔64から各係合溝60に挿し込んで第2係止突部55と第1係止突部61との係止状態を解除し、その状態で各係止可撓片53の上端部を表示盤貫通孔64に向けて押し込めばよいので、計測ユニット30の分解にかかる作業性も向上する。 Further, when disassembling the measurement unit 30, the locking release tool 80 is inserted into the respective engagement grooves 60 from the display panel through holes 64, and the second locking projection 55 and the first locking projection 61 are In this state, the upper end portion of each locking flexible piece 53 may be pushed toward the display panel through hole 64, so that the workability for disassembling the measuring unit 30 is also improved.
さらに、計測ユニット30は、係止可撓片53の上端部(段付突片56)が表示盤貫通孔64を貫通し、その外側面に表示盤31の円筒壁31Bが宛がわれているので、係止可撓片53の上端部が外側に傾動することが防止される。これにより、計測ユニット30を取り扱う際に、意に反して係止可撓片53と連結支柱52との係止が解除され、計測ユニット30が分解されることが防止される。 Further, in the measurement unit 30, the upper end portion (stepped protrusion 56) of the locking flexible piece 53 passes through the display board through hole 64, and the cylindrical wall 31B of the display board 31 is assigned to the outer surface thereof. Therefore, the upper end portion of the locking flexible piece 53 is prevented from tilting outward. Accordingly, when the measurement unit 30 is handled, the engagement between the engagement flexible piece 53 and the connection column 52 is released unexpectedly, and the measurement unit 30 is prevented from being disassembled.
しかも、表示盤31の支持孔33とギヤ支持盤32(下台板40)の支持孔42とが正規の組み合わせで対向した場合にのみ、全ての連結支柱52の係合溝60に全ての係止可撓片53が挿入されるように、連結支柱52同士及び係止可撓片53同士の間隔を周方向で異ならせて配置したので、表示盤31とギヤ支持盤32(下台板40及び受け板41)との組付けミスが防止される。 Moreover, only when the support holes 33 of the display board 31 and the support holes 42 of the gear support board 32 (lower base plate 40) face each other in a proper combination, all the engagement grooves 60 of all the connection columns 52 are engaged with each other. Since the connecting struts 52 and the locking flexible pieces 53 are arranged at different intervals in the circumferential direction so that the flexible pieces 53 are inserted, the display board 31 and the gear support board 32 (the lower base plate 40 and the receiving board 40) are arranged. Assembly errors with the plate 41) are prevented.
[他の実施形態]
本発明は、前記実施形態に限定されるものではなく、例えば、以下に説明するような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
[Other Embodiments]
The present invention is not limited to the above-described embodiment. For example, the embodiments described below are also included in the technical scope of the present invention, and various other than the following can be made without departing from the scope of the invention. It can be changed and implemented.
(1)前記実施形態では、連結支柱52を表示盤31に設け、係止可撓片53を受け板に設けていたが、この逆でもよい。 (1) In the above embodiment, the connecting support column 52 is provided on the display panel 31 and the locking flexible piece 53 is provided on the receiving plate.
(2)前記実施形態では、計測ユニット30を分解する際に係止解除用工具80を、表示盤貫通孔64から挿入していたが、受け板41に形成されたスリット66から挿入しても、第1係止突部61と第2係止突部55の係止を解除することができ、計測ユニット30を分解することが可能である。 (2) In the embodiment described above, the unlocking tool 80 is inserted from the display panel through-hole 64 when the measuring unit 30 is disassembled, but it may be inserted from the slit 66 formed in the receiving plate 41. The locking of the first locking projection 61 and the second locking projection 55 can be released, and the measurement unit 30 can be disassembled.
(3)ギヤ支持盤32は、下台板40と受け板41とに分割可能であったが、これらは分割不能な構造でもよい。 (3) Although the gear support plate 32 can be divided into the lower base plate 40 and the receiving plate 41, these may be structured so as not to be divided.
(4)連結支柱52及び係止可撓片53の数は、3つ以上であってもよい。 (4) The number of the connecting struts 52 and the locking flexible pieces 53 may be three or more.
(5)水道メータ10の積算表示部は、所謂、円読式に限るものではなく、直読式でもよい。また、所謂、湿式水道メータに限定するものではなく、計測ユニット30をレジスタボックスに収容してなる乾式水道メータであってもよい。また、接線流式でも軸流式でもよい。 (5) The integrated display part of the water meter 10 is not limited to the so-called circular reading type, but may be a direct reading type. Moreover, it is not limited to a so-called wet water meter, and may be a dry water meter in which the measurement unit 30 is accommodated in a register box. Moreover, a tangential flow type or an axial flow type may be used.
(6)上記実施形態では、係止可撓片53の先端部が、表示盤31に形成された表示盤貫通孔64に受容されるように構成されていたが、図12に示すように、係止可撓片53の上下方向の長さを上記実施形態のものより短くし、先端が表示盤貫通孔64に受容されない構成としてもよい。このような構成であっても、計測ユニット30をメータケース11に嵌合すれば、係止可撓片53の外側に円筒収容部15の円筒内面が近接配置されて、係止可撓片53の外側への弾性変形が規制されるので、水圧による第1係止突部61と第2係止突部55との係止解除が防止される。即ち、メータケース11の内部で計測ユニット30が分解することを防ぐことができる。 (6) In the above embodiment, the distal end portion of the locking flexible piece 53 is configured to be received in the display panel through-hole 64 formed in the display panel 31, but as shown in FIG. The length of the locking flexible piece 53 in the vertical direction may be shorter than that of the above embodiment, and the tip may not be received in the display panel through hole 64. Even in such a configuration, when the measurement unit 30 is fitted to the meter case 11, the cylindrical inner surface of the cylindrical housing portion 15 is disposed close to the outside of the locking flexible piece 53, and the locking flexible piece 53. Since the elastic deformation to the outside is restricted, the unlocking of the first locking projection 61 and the second locking projection 55 due to water pressure is prevented. That is, the measurement unit 30 can be prevented from being disassembled inside the meter case 11.
10 水道メータ
11 メータケース
13 羽根車
30 計測ユニット
31 表示盤
32 ギヤ支持盤
33,42 支持孔
40 下台板(支持盤構成板)
41 受け板(支持盤構成板)
47 ギヤ
47B 回転シャフト
52 連結支柱
53 係止可撓片
55 第2係止突部(係止突部)
55A,61A 突部摺接テーパー面(摺接傾斜面)
59 積算表示部(流量表示部)
60 係合溝
61 第1係止突部(係止突部)
64 表示盤貫通孔(先端受容部)
80 係止解除用工具
DESCRIPTION OF SYMBOLS 10 Water meter 11 Meter case 13 Impeller 30 Measuring unit 31 Display board 32 Gear support board 33,42 Support hole 40 Lower base plate (support board structure board)
41 Back plate (support plate component plate)
47 Gear 47B Rotating shaft 52 Connecting column 53 Locking flexible piece 55 Second locking protrusion (locking protrusion)
55A, 61A Projection sliding contact taper surface (sliding contact inclined surface)
59 Total display (flow rate display)
60 engaging groove 61 first locking protrusion (locking protrusion)
64 Display board through hole (tip receiving part)
80 Unlocking tool
Claims (9)
前記表示盤と前記ギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、前記連結支柱の外側面に重ねられた複数の係止可撓片とを設け、
前記各連結支柱の外側面には、前記係止可撓片を上下方向に案内する係合溝が形成されると共に、前記係合溝の底面と前記係止可撓片の内側面とには、前記係止可撓片が前記係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、
前記計測ユニットを前記メータケース内に嵌合した状態で、そのメータケースの内側面により前記各係止可撓片の前記外側への弾性変形を規制したことを特徴とする水道メータ。 A measurement unit fitted in the meter case, a display panel having a flow rate display portion on the upper surface, a gear support panel disposed oppositely below the display panel, and between the display panel and the gear support panel And a plurality of gears for operating the flow rate display unit, and the gears are linked to an impeller housed below the measurement unit in the meter case to rotate the impeller. In a water meter that displays the flow rate of flowing tap water on the flow rate display unit,
A plurality of connecting columns extending from one outer edge portion to the other of the display panel and the gear support plate, and a plurality extending from the other outer edge portion to one side and superimposed on the outer surface of the connecting column. A locking flexible piece of
An engaging groove for guiding the locking flexible piece in the vertical direction is formed on the outer side surface of each connecting column, and the bottom surface of the engaging groove and the inner side surface of the locking flexible piece are formed on the outer surface of each connecting column. In the middle of the movement of the locking flexible piece in the engagement groove, a locking projection is formed that elastically deforms outward to overcome each other and lock in the vertical direction.
A water meter in which elastic deformation of the locking flexible pieces to the outside is restricted by an inner surface of the meter case in a state where the measurement unit is fitted in the meter case.
前記表示盤には、前記係止突部同士が互いに乗り上がる前に、前記各係止可撓片の先端部を受容し、前記各係止可撓片の先端部の外側への移動を規制する先端受容部を備えたことを特徴とする請求項1に記載の水道メータ。 The locking protrusion is disposed in the middle of the longitudinal direction of the bottom surface of the engaging groove and the inner surface of the locking flexible piece,
The display board receives the leading end portions of the locking flexible pieces before the locking protrusions ride on each other, and restricts the movement of the locking flexible pieces to the outside. The water meter according to claim 1, further comprising a tip receiving portion.
前記表示盤と前記ギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、前記連結支柱の外側面に重ねられた複数の係止可撓片とを設け、
前記各連結支柱の外側面には、前記係止可撓片を上下方向に案内する係合溝が形成されると共に、前記係合溝の底面と前記係止可撓片の内側面とには、前記係止可撓片が前記係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、
前記係止突部は、前記係合溝の底面及び前記係止可撓片の内側面の長手方向の中間に配置され、
前記表示盤には、前記係止突部同士が互いに乗り上がる前に、前記各係止可撓片の先端部を受容し、前記各係止可撓片の先端部の外側への移動を規制する先端受容部を備えたことを特徴とする水道メータ。 A measurement unit fitted in the meter case, a display panel having a flow rate display portion on the upper surface, a gear support panel disposed oppositely below the display panel, and between the display panel and the gear support panel And a plurality of gears for operating the flow rate display unit, and the gears are linked to an impeller housed below the measurement unit in the meter case to rotate the impeller. In a water meter that displays the flow rate of flowing tap water on the flow rate display unit,
A plurality of connecting columns extending from one outer edge portion to the other of the display panel and the gear support plate, and a plurality extending from the other outer edge portion to one side and superimposed on the outer surface of the connecting column. A locking flexible piece of
An engaging groove for guiding the locking flexible piece in the vertical direction is formed on the outer side surface of each connecting column, and the bottom surface of the engaging groove and the inner side surface of the locking flexible piece are formed on the outer surface of each connecting column. In the middle of the movement of the locking flexible piece in the engagement groove, a locking projection is formed that elastically deforms outward to overcome each other and lock in the vertical direction.
The locking protrusion is disposed in the middle of the longitudinal direction of the bottom surface of the engaging groove and the inner surface of the locking flexible piece,
The display board receives the leading end portions of the locking flexible pieces before the locking protrusions ride on each other, and restricts the movement of the locking flexible pieces to the outside. A water meter characterized by comprising a tip receiving portion.
前記係止可撓片は、前記係止突部同士が上下方向で係止した状態で前記先端受容部の上方に突出したことを特徴とする請求項2又は3に記載の水道メータ。 The tip receiving portion is formed through the display board,
4. The water meter according to claim 2, wherein the locking flexible piece protrudes above the tip receiving portion in a state where the locking protrusions are locked in the vertical direction.
互いに前記上下方向で係止した前記係止突部のうち少なくとも前記係止可撓片の内側面に配置された一方の係止突部には、他方の係止突部に徐々に乗り上がるための摺接傾斜面が形成され、
前記計測ユニットを前記メータケースから取り外した状態において、前記工具挿入空間に上方から挿入した帯板状の工具を、前記摺接傾斜面に摺接させて前記係止可撓片を外側に弾性変形させ、前記係止突部同士の係止を解除可能としたことを特徴とする請求項2乃至4の何れかに記載の水道メータ。 The tip receiving portion is formed through the display board, and a tool insertion space is formed between the inner surface of the tip receiving portion and the inner side surface of the locking flexible piece,
Among the locking protrusions locked in the vertical direction, at least one locking protrusion disposed on the inner surface of the locking flexible piece gradually climbs onto the other locking protrusion. The sliding contact slope is formed,
In a state where the measurement unit is removed from the meter case, a strip-like tool inserted from above into the tool insertion space is brought into sliding contact with the sliding contact inclined surface, and the locking flexible piece is elastically deformed outward. The water meter according to any one of claims 2 to 4, wherein the locking protrusions can be unlocked.
前記表示盤の支持孔と前記ギヤ支持盤の支持孔とが正規の組み合わせで対向した場合にのみ、全ての前記連結支柱の係合溝に全ての前記係止可撓片が挿入されるように、前記係止可撓片同士の間隔を異ならせて配置したことを特徴とする請求項1乃至5の何れかに記載の水道メータ。 A rotary shaft is formed to project vertically from the center of each gear, and the display board and the gear support board are formed with a plurality of support holes that pivotally support both ends of the rotary shaft.
Only when the support holes of the display board and the support holes of the gear support board face each other in a proper combination, all the locking flexible pieces are inserted into the engaging grooves of all the connecting columns. The water meter according to any one of claims 1 to 5, wherein the engaging flexible pieces are arranged at different intervals.
前記複数の連結支柱を前記表示盤から垂下し、それら連結支柱と前記下側の支持盤構成板との間で前記上側の支持盤構成板を挟んで固定したことを特徴とする請求項6に記載の水道メータ。 The gear support plate is formed by vertically stacking a pair of support plate constituting plates, and the support holes are formed through the upper support plate constituting plate, while the plurality of support plate constituting plates on the lower side are provided with the plurality of support holes. The locking flexible piece is integrally formed,
The plurality of connecting columns are suspended from the display panel, and the upper supporting plate constituting plate is sandwiched and fixed between the connecting columns and the lower supporting plate constituting plate. The listed water meter.
上面に流量表示部を有した表示盤と、前記表示盤の下方に対向配置されたギヤ支持盤と、前記表示盤と前記ギヤ支持盤との間に支持されて、前記流量表示部を作動させるための複数のギヤとを備え、それらギヤを、前記メータケースのうち前記計測ユニットの下方に収容される羽根車に連動させて、前記羽根車を回転させて流れる水道水の流量を前記流量表示部に表示可能な計測ユニットにおいて、
前記表示盤と前記ギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、前記連結支柱の外側面に重ねられた複数の係止可撓片とを設け、
前記各連結支柱の外側面には、前記係止可撓片を上下方向に案内する係合溝が形成されると共に、前記係合溝の底面と前記係止可撓片の内側面とには、前記係止可撓片が前記係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、
前記計測ユニットを前記メータケース内に嵌合した状態で、そのメータケースの内側面により前記各係止可撓片の前記外側への弾性変形を規制したことを特徴とする計測ユニット。 A measuring unit fitted in a meter case provided in a water meter,
A display panel having a flow rate display unit on the upper surface, a gear support panel disposed oppositely below the display panel, and supported between the display panel and the gear support panel to operate the flow rate display unit. A plurality of gears, and the gears are linked to an impeller housed below the measurement unit in the meter case, and the flow rate of tap water flowing by rotating the impeller is displayed in the flow rate display. In the measurement unit that can be displayed on the
A plurality of connecting columns extending from one outer edge portion to the other of the display panel and the gear support plate, and a plurality extending from the other outer edge portion to one side and superimposed on the outer surface of the connecting column. A locking flexible piece of
An engaging groove for guiding the locking flexible piece in the vertical direction is formed on the outer side surface of each connecting column, and the bottom surface of the engaging groove and the inner side surface of the locking flexible piece are formed on the outer surface of each connecting column. In the middle of the movement of the locking flexible piece in the engagement groove, a locking projection is formed that elastically deforms outward to overcome each other and lock in the vertical direction.
The measuring unit, wherein the measuring unit is fitted in the meter case, and the elastic deformation of the locking flexible pieces to the outside is restricted by the inner surface of the meter case.
上面に流量表示部を有した表示盤と、前記表示盤の下方に対向配置されたギヤ支持盤と、前記表示盤と前記ギヤ支持盤との間に支持されて、前記流量表示部を作動させるための複数のギヤとを備え、それらギヤを、前記メータケースのうち前記計測ユニットの下方に収容される羽根車に連動させて、前記羽根車を回転させて流れる水道水の流量を前記流量表示部に表示可能な計測ユニットにおいて、
前記表示盤と前記ギヤ支持盤とのうち一方の外縁部から他方に向かって延びた複数の連結支柱と、他方の外縁部から一方に向かって延び、前記連結支柱の外側面に重ねられた複数の係止可撓片とを設け、
前記各連結支柱の外側面には、前記係止可撓片を上下方向に案内する係合溝が形成されると共に、前記係合溝の底面と前記係止可撓片の内側面とには、前記係止可撓片が前記係合溝内を移動する途中で外側に弾性変形して互いに乗り越えかつ上下方向で係止した係止突部が形成され、
前記係止突部は、前記係合溝の底面及び前記係止可撓片の内側面の長手方向の中間に配置され、
前記表示盤には、前記係止突部同士が互いに乗り上がる前に、前記各係止可撓片の先端部を受容し、前記各係止可撓片の先端部の外側への移動を規制する先端受容部を備えたことを特徴とする計測ユニット。 A measuring unit fitted in a meter case provided in a water meter,
A display panel having a flow rate display unit on the upper surface, a gear support panel disposed oppositely below the display panel, and supported between the display panel and the gear support panel to operate the flow rate display unit. A plurality of gears, and the gears are linked to an impeller housed below the measurement unit in the meter case, and the flow rate of tap water flowing by rotating the impeller is displayed in the flow rate display. In the measurement unit that can be displayed on the
A plurality of connecting columns extending from one outer edge portion to the other of the display panel and the gear support plate, and a plurality extending from the other outer edge portion to one side and superimposed on the outer surface of the connecting column. A locking flexible piece of
An engaging groove for guiding the locking flexible piece in the vertical direction is formed on the outer side surface of each connecting column, and the bottom surface of the engaging groove and the inner side surface of the locking flexible piece are formed on the outer surface of each connecting column. In the middle of the movement of the locking flexible piece in the engagement groove, a locking projection is formed that elastically deforms outward to overcome each other and lock in the vertical direction.
The locking protrusion is disposed in the middle of the longitudinal direction of the bottom surface of the engaging groove and the inner surface of the locking flexible piece,
The display board receives the leading end portions of the locking flexible pieces before the locking protrusions ride on each other, and restricts the movement of the locking flexible pieces to the outside. A measuring unit comprising a tip receiving portion.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006239757A JP4863374B2 (en) | 2006-09-05 | 2006-09-05 | Water meter and its measurement unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006239757A JP4863374B2 (en) | 2006-09-05 | 2006-09-05 | Water meter and its measurement unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2008064484A true JP2008064484A (en) | 2008-03-21 |
JP4863374B2 JP4863374B2 (en) | 2012-01-25 |
Family
ID=39287343
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2006239757A Expired - Fee Related JP4863374B2 (en) | 2006-09-05 | 2006-09-05 | Water meter and its measurement unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4863374B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101752860B1 (en) * | 2016-07-21 | 2017-06-30 | (주)대한계기정밀 | Water meter |
CN111637934A (en) * | 2020-04-21 | 2020-09-08 | 安徽丹凤缘科技有限公司 | Metering device of NB-IOT thing networking water gauge |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4733333Y1 (en) * | 1968-05-09 | 1972-10-07 | ||
JPS5590915A (en) * | 1978-12-28 | 1980-07-10 | Canon Inc | Projector |
JPS616720A (en) * | 1984-06-20 | 1986-01-13 | Yokogawa Hokushin Electric Corp | Power supply device |
DE19858798A1 (en) * | 1998-12-18 | 2000-06-21 | Abb Patent Gmbh | Multistream vane meter of wet running principle; has mechanism container arranged above measuring chamber with vane shaft passing through base of mechanism container |
DE10237177A1 (en) * | 2002-08-14 | 2004-03-04 | Hydrometer Gmbh | Counter, in particular for water meters, and method for its assembly |
-
2006
- 2006-09-05 JP JP2006239757A patent/JP4863374B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4733333Y1 (en) * | 1968-05-09 | 1972-10-07 | ||
JPS5590915A (en) * | 1978-12-28 | 1980-07-10 | Canon Inc | Projector |
JPS616720A (en) * | 1984-06-20 | 1986-01-13 | Yokogawa Hokushin Electric Corp | Power supply device |
DE19858798A1 (en) * | 1998-12-18 | 2000-06-21 | Abb Patent Gmbh | Multistream vane meter of wet running principle; has mechanism container arranged above measuring chamber with vane shaft passing through base of mechanism container |
DE10237177A1 (en) * | 2002-08-14 | 2004-03-04 | Hydrometer Gmbh | Counter, in particular for water meters, and method for its assembly |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101752860B1 (en) * | 2016-07-21 | 2017-06-30 | (주)대한계기정밀 | Water meter |
CN111637934A (en) * | 2020-04-21 | 2020-09-08 | 安徽丹凤缘科技有限公司 | Metering device of NB-IOT thing networking water gauge |
Also Published As
Publication number | Publication date |
---|---|
JP4863374B2 (en) | 2012-01-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100631376B1 (en) | tilt hinge and electronic apparatus with the tilt hinge | |
US8429796B2 (en) | Tilt hinge | |
JP4863374B2 (en) | Water meter and its measurement unit | |
JP2017515657A (en) | Filter group | |
WO2017138357A1 (en) | Electronic device | |
JP4407657B2 (en) | Clock button structure and clock having the same | |
JP2013002637A (en) | Locking structure and electronic device with the same | |
JP2014149013A (en) | Geared motor | |
US8100484B2 (en) | Computer enclosure | |
JP6163018B2 (en) | Check valve | |
JP4841941B2 (en) | Meter inspection fixture | |
JP2011173557A (en) | Door mirror for vehicle | |
JP4976050B2 (en) | Instrument movement structure | |
JP6476521B2 (en) | Enclosure | |
JP5015836B2 (en) | Display panel mounting structure | |
JP6710459B2 (en) | Water meter | |
JP2007149539A (en) | Knob | |
JP2019044342A (en) | Slide hinge and cabinet | |
JP2022113352A (en) | Water meter and lid locking structure of the same | |
JP5158571B2 (en) | Fixing member for wall-mounted faucet | |
WO2012008150A1 (en) | Fixing structure and drive apparatus | |
CN114608428A (en) | Working state monitoring system based on magnetostrictive displacement detection | |
JP4464220B2 (en) | Crescent tablets | |
JP5630780B2 (en) | Clothes drying equipment | |
CN201115140Y (en) | Card holding component |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20090728 |
|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20111019 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20111102 |
|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20111104 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20141118 Year of fee payment: 3 |
|
R150 | Certificate of patent or registration of utility model |
Free format text: JAPANESE INTERMEDIATE CODE: R150 Ref document number: 4863374 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
LAPS | Cancellation because of no payment of annual fees |