JP3621921B2 - Tire / wheel matching system - Google Patents

Description

として与えられる。上式よりタイヤ外径Ｆ、タイヤ幅Ｃｏおよび指定されたホイールのリム径Ｌを代入し、偏平率Ｍを算出する。
【００４６】
当該算出された偏平率Ｍに適合するタイヤの寸法データをタイヤ総幅Ｃｎにより抽出したタイヤの寸法データから再抽出する。偏平率Ｍにより再抽出されたタイヤの寸法データおよびそれに対応するホイールの寸法データは、図２のステップＳ７において、出力手段５により出力される。
【００４７】
このようにして、膨大なタイヤ・ホイールのデータの中から適当なタイヤおよびホイールの寸法データを容易に抽出することができる。
【００４８】
なお、本実施の形態においては、図２のステップＳ４において、ホイールのリム径Ｌのみを指定する方法を例にとって説明したが、他にホイールのリム径Ｌおよびオフセット値Ａを指定する方法、ホイールのリム径Ｌおよびリム幅Ｋを指定する方法またはタイヤサイズ（タイヤ幅Ｃｏ、扁平率Ｍおよび対応するホイールのリム径Ｌ）を指定する方法等によりタイヤ・ホイールを抽出することが可能である。ホイールのリム径Ｌおよびオフセット値Ａを指定する方法においては、前述のホイールのリム径Ｌのみを指定する方法における想定オフセット値Ａが固定値になるため、抽出処理の前段階でタイヤの最大許容寸法として想定されるタイヤの最大幅Ｃｍの精度が高くなり、抽出処理はより迅速になる。
【００４９】
ホイールのリム径Ｌおよびリム幅Ｋを指定する方法においては、想定されたタイヤの最大幅Ｃｍに基いてタイヤ総幅Ｃｎによりタイヤの寸法データおよびホイール寸法データの組み合わせを抽出する際に、一のサイズのタイヤに対して一のサイズのホイールが組み合わせられる。本来は一のサイズのタイヤには、複数のサイズのリム幅を有するホイールを組み合わせることができるところ、指定されたリム幅Ｋを有するホイールのみが事前に検索されているからである。したがって、抽出処理はより迅速になる。
【００５０】
タイヤサイズを指定する方法においては、指定されたタイヤ幅Ｃｏをホイールに装着した時のタイヤ総幅Ｃｎが、想定されたタイヤの最大幅Ｃｍを越えないようなホイールのリム幅Ｋを有するタイヤの寸法データおよびホイールの寸法データの組み合わせを抽出する。
【００５１】
続いて、ユーザが出力手段５に基いて実際に入力操作する場合の手順について説明する。本実施の形態のタイヤ・ホイールのマッチングシステムにおいては、コンピュータのモニタの表示をもとに各種入力作業を行ったり、出力結果を表示したりする。図４は所有車種の入力画面を示す図であり、図５は所望のタイヤ・ホイールサイズの入力画面を示す図であり、図６は抽出結果の表示画面を示す図である。
【００５２】
まず、ユーザは、図２のステップＳ１において、図４に示すような、車種入力画面にしたがって所有する車種の入力を行う。本実施の形態においては、メーカ、車名、グレードを選択することにより設定する。メーカ欄ｗ１、車名欄ｗ２、グレード欄ｗ３は、それぞれプルダウンメニューによりユーザが容易に選択し得る構成となっている。メーカ欄ｗ１のプルダウンメニューの中からユーザ所有の自動車のメーカを選択すると車名欄ｗ２のプルダウンメニューには、当該メーカの車名のみがプルダウンメニューとして表示される。同様に、車名欄ｗ２を選択することによってグレード欄ｗ３のプルダウンメニューも限定的に表示される。
【００５３】
このようにして、グレード欄ｗ３まで選択されると、図２のステップＳ３として、図４の中央に示すように純正タイヤ・ホイールの規格表示およびフェンダークリアランスが表示される。ここで、図４のタイヤ幅Ｃｏとは、前述の通り、ホイール非装着時のタイヤ幅であり、規格値である。一方タイヤ総幅Ｃｎとは、ホイール装着時のタイヤ幅であり、同一のタイヤであっても装着するホイールのリム幅Ｋにより変動する。フェンダークリアランスにおけるクリアランスとは、タイヤとフェンダー１０３との間の距離として図３におけるクリアランスＤとして示されるもので、ユーザの参考のために表示される。ユーザは、純正タイヤ・ホイールの各値を確認し、ＯＫボタンｗ４を押下する。
【００５４】
図４のＯＫボタンｗ４が押下されると、図２のステップＳ４として、図５の所望のタイヤ・ホイールサイズの入力画面が表示される。図５においては、ホイールサイズを指定することによって抽出する方法３種およびタイヤサイズを指定することによって抽出する方法１種の計４種から選択できるようになっているが、これと異なる方法を採用することも可能である。
【００５５】
ユーザは、適当なサイズの指定方法を選択し、当該サイズの指定方法にあるチェックボックスをチェックし、所望のサイズをサイズ入力欄に入力する。図５においてはホイールサイズ指定のリム径Ｌのみの指定を選択し、当該チェックボックスｗ５がチェックされ、所望のホイールサイズのリム径Ｌがサイズ入力欄ｗ５ａ，ｗ５ｂ，ｗ５ｃに入力されている。この後、実行ボタンｗ６を押下することによって図１の演算手段４により図２のステップＳ５におけるタイヤ・ホイールの寸法データの検索・抽出が行われる。
【００５６】
図２のステップＳ７として、図１の演算手段４による抽出結果は、図６のように一覧表示される。図６に示すように、図５の所望のタイヤ・ホイールサイズの入力画面において入力された項目が検索項目表示欄ｗ７に表示される。図６においては、複数の検索リム径Ｌが表示されており、それぞれボタンを押下することによってリム径Ｌを切り替えることができる。また、純正データ表示欄ｗ８には、図４の車種入力画面において表示された純正タイヤ・ホイールデータが表示される。
【００５７】
抽出結果は、抽出結果表示欄ｗ９に表示される。フロント表示ボタンｗ１１またはリア表示ボタンｗ１２を押下することによって、フロントまたはリアのそれぞれのタイヤ・ホイールの抽出結果が表示される。本実施の形態における抽出結果表示欄ｗ９には、検索表示項目ｗ７をもとに抽出されたタイヤの種類が縦軸に表示される。横軸には、ホイールのリム幅Ｋが表示されており、縦軸に並んだそれぞれのタイヤに適合するリム幅Ｋの欄に装着時のタイヤ幅であるタイヤ総幅Ｃｎが表示される。適合しないホイールのリム幅には、０が表示される。
【００５８】
また、一覧表示欄ｗ１０には、抽出結果表示欄ｗ９に表示されたタイヤ・ホイールの各種寸法データを一覧表示する。本実施の形態においては、後述するように、抽出結果表示欄ｗ９において最適表示ｗ９ａとなっている寸法データを一覧表示する。さらに、一覧表ボタンｗ１３を押下することにより、より詳しいタイヤ・ホイールの一覧表を表示することも可能である。また、モニタ表示のみならず、抽出結果を印刷等して出力することも可能である。
【００５９】
本実施の形態においては、図２のステップＳ６として、演算手段４により抽出された抽出結果の中から当該車種の純正タイヤの外径に近いデータから優先順位を付し、抽出結果を優先順位とともに出力するように構成される。
【００６０】
ここで、優先順位を付ける具体的方法について説明する。まず、抽出結果の中に複数のリム径Ｌの指定がある場合、リム径Ｌによる昇順ソートが行われる。前述するように、サイズごとに優先度を定めるためであり、リム径の大きい順でも、小さい順でも構わない。
【００６１】
次に、リム幅Ｋによる昇順ソートが行われる。一般的には、リム幅Ｋは、純正ホイールのリム幅と同等かそれ以上の幅のものが用いられるため、リム幅の太い順に昇順ソートされる。続いて、タイヤ幅による昇順ソートが行われる。リム幅Ｋと同様に、タイヤ幅の太い順に昇順ソートされる。
【００６２】
さらに、偏平率Ｍによる昇順ソートが行われる。偏平率Ｍは、一般的には、純正タイヤの偏平率と同等かそれ以下のものが用いられるため、偏平率の低い順に昇順ソートされる。最後に、タイヤ外径Ｆによる昇順ソートが行われる。タイヤ外径Ｆは、純正タイヤ外径に近い方がよいので、純正タイヤ外径に近い順に昇順ソートされる。
【００６３】
以上のように、抽出結果の中から各値において昇順ソートを行い、その結果を図６の抽出結果表示欄ｗ９のように優先順に表示させる。また、同一リム径、リム幅の中でタイヤ外径が最も純正タイヤ外径に近い抽出結果を最適サイズとして図６の最適表示ｗ９ａのように色を変えて表示させ、さらに、一覧表示欄ｗ１０のように列挙させる。
【００６４】
この場合、タイヤ・ホイールの交換前後において、タイヤ外径の誤差をなるべく小さくすることによって速度メータにおける実際の速度との誤差を小さくすることができる。すなわち、タイヤ・ホイールの交換時においては、交換前後におけるタイヤ外径の誤差をなるべく小さくすることが望ましい。
【００６５】
したがって、演算手段４により抽出された抽出結果の中から純正タイヤの外形になるべく近い寸法データの順に優先順位を付けることにより、交換前後で誤差のないタイヤ・ホイールを抽出して出力することができる。このようにして、よりユーザのニーズに応え得るタイヤ・ホイールをユーザに選択させることができる。
【００６６】
なお、本実施の形態においては、優先順位は、タイヤ・ホイールの各サイズごとに付されている。さらに、優先順位の表示方法は、図６に示す最適表示ｗ９ａのように、各サイズの中で最も優先度の高いもののみ色を変えて表示してあるが、優先順に並び替えて表示したり、複数の色を用いて優先度に応じて色を変えて表示する等、本実施の形態と異なる表示方法を採用することも可能である。
【００６７】
本実施の形態においては、製品になっているタイヤおよびホイールを当該タイヤおよびホイールの寸法データとともに保存するための第３データ記憶手段と、請求項１または２記載のマッチングシステムにより得られたタイヤおよびホイールの寸法データと等しい寸法データを有する前記第３データ記憶手段に記憶されたタイヤおよびホイールを検索する製品検索手段と、当該検索されたタイヤおよびホイールの銘柄をメーカ別に出力する検索結果出力手段とを具備する構成とすることが可能である。
【００６８】
この場合、本発明のマッチングシステムにより抽出されたタイヤおよびホイールの寸法データをもとに、当該寸法データに該当する実際の製品となっているタイヤまたはホイールの銘柄がメーカ別に出力される。
【００６９】
これにより、ユーザがユーザ所有の車種に適合するタイヤ・ホイールを実際に販売されている製品の中から容易に選択することができる。
【００７０】
【発明の効果】
本発明に係るタイヤ・ホイールのマッチングシステムによれば、ユーザが所望のタイヤおよびホイールサイズを入力するだけで、タイヤおよびホイールの膨大なデータの中からユーザ所有の車種に適合するタイヤおよびホイールサイズを自動的に抽出し、ユーザに容易に選択させることができる。
【図面の簡単な説明】
【図１】本発明に係るタイヤ・ホイールのマッチングシステムの構成を表すブロック図である。
【図２】本実施の形態におけるタイヤ・ホイールのマッチングシステムの動作の流れを示すフロー図である。
【図３】タイヤの最大許容寸法を算出するための概略図である。
【図４】所有車種の入力画面を示す図である。
【図５】所望のタイヤ・ホイールサイズの入力画面を示す図である。
【図６】抽出結果の表示画面を示す図である。
【符号の説明】
１…第１データ記憶手段 ２…第２データ記憶手段 ３…入力手段 ４…演算手段 ５…出力手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a tire / wheel matching system.In particular, the present invention relates to a tire / wheel matching system for extracting a combination of a tire and a wheel that can be mounted on a desired vehicle type by calculation.
[0002]
[Prior art]
Tires and wheels have been actively changed as a means for making automobiles sold by manufacturers a user's favorite style and improving power performance. In particular, the inch-in, which increases the wheel diameter, improves the overall appearance of the car, and is indispensable for car dress-up.
[0003]
When the wheel is inch-up, the speedometer needs to be readjusted if the tire's outer diameter is not the same as the tire's outer diameter at the time of sale by the manufacturer, or the tire becomes a wheel house of the car. In order to cause interference, it is usually necessary to select the outer diameter of the tire attached to the wheel after the inch-up to the same extent as the outer diameter of the tire provided in the automobile sold by the manufacturer. It is also possible to increase the width of the tire. In this case, it is necessary that the tire does not interfere with the inside of the wheel house of the vehicle and does not protrude from the width of the vehicle body when the tire is mounted.
[0004]
On the other hand, many of these replacement tires and wheels are sold by various manufacturers in various sizes. The user must select a desired tire or wheel from such a wide variety of tires and wheels, and then select a wheel that matches the selected tire or a tire that fits the wheel.
[0005]
In order to save such troublesome work, mass sales stores of tires and wheels are often sold in the form of set sales by matching the tires and wheels combined for each vehicle type in advance at the mass sales store side. .
[0006]
[Problems to be solved by the invention]
However, matching at mass merchandisers is performed on the basis of the experience and intuition of an expert for satisfying the above-mentioned necessary items, and is a very time-consuming operation. In addition, it is very difficult to grasp all the combinations of tires and wheels of all types and sizes for all vehicle types, and there are many cases where the user needs cannot be answered.
[0007]
The present invention has been made to solve the problems of the prior art, and an object thereof is to provide a tire / wheel matching system for checking a combination of a tire and a wheel that can be attached to a desired vehicle type. .
[0008]
[Means for Solving the Problems]
The tire / wheel matching system according to the present invention includes:A tire / wheel matching system for extracting a combination of a tire and a wheel that can be mounted on a desired vehicle by calculation,First data storage means for storing housing data that is a space dimension in a tire house for each vehicle type, tires and wheelsEach item consists of multiple itemsA second data storage means for storing dimension data;WantEnter the vehicle typeSelect a predetermined tire size and / or wheel size designation method, and the predetermined items necessary for the designation method among the plurality of itemsBased on the input means for inputting a desired tire size and / or wheel size, and the vehicle type input by the input means, the housing data of the vehicle type stored in the first data storage means is searched. Together with the retrieved housing dataBased on the offset value of the wheel that can be installed based on the offset value and the housing dataThe tire and / or wheel dimension data stored in the second data storage means is calculated based on the desired tire size and / or wheel size inputted by the input means by calculating the maximum allowable dimension of the tire that can be attached. And a calculation means for extracting a combination of tire and wheel dimension data that can be mounted within a range of the maximum allowable dimension of the tire from the searched tire and / or wheel dimension data Output means for outputting a combination of the tire and wheel dimension data extracted by the above.
[0009]
In the tire / wheel matching system of the present invention, the first data storage means stores housing data, which is a space dimension in the tire house for each vehicle type, and the second data storage means stores tire and wheel dimension data. Is memorized. The user inputs his / her own vehicle type by input means and inputs a desired tire size and / or wheel size.
[0010]
In the calculation means, the housing data of the vehicle type stored in the first data storage means is retrieved based on the input vehicle type, and the maximum allowable tire size that can be attached is calculated from the retrieved housing data. . Further, based on the inputted desired tire size and / or wheel size, the tire and wheel dimension data stored in the second data storage means are retrieved, and the retrieved tire and / or wheel dimension data are retrieved. A combination of tire and wheel dimension data that can be mounted within the range of the maximum allowable dimension of the tire is extracted. The output means outputs a combination of tire and wheel dimension data extracted by the computing means.
[0011]
In this way, just by entering the desired tire and wheel size, the user automatically collates the tire and wheel dimension data suitable for the user's own vehicle type from among the enormous dimension data of the tire and wheel. Can be easily selected.
[0012]
Preferably, the first data storage means further stores an outer diameter dimension of a genuine tire that is mounted in advance for each of the vehicle types, and the calculation means is selected from the extraction results extracted by the calculation means. Priorities are assigned from data close to the outer diameter size of the genuine tire of the vehicle type, and the extraction result is output together with the priorities.
[0013]
In this case, the error from the actual speed in the speedometer can be reduced by reducing the error in the tire outer diameter as much as possible before and after the replacement of the tire and the wheel. In other words, when exchanging tires and wheels, it is desirable to minimize the error in the tire outer diameter before and after the exchange.
[0014]
Therefore, by assigning priorities in the order of data as close as possible to the outer diameter of the genuine tire from the extraction results extracted by the computing means, it is possible to extract and output tires and wheels with no error before and after replacement. That is, it is possible to allow the user to select tires and wheels that can better meet the user's needs.
[0015]
In addition, you may attach | subject the priority order for every size of a tire and a wheel. In addition, as a display method of the priority order, only the highest priority among the sizes may be displayed by changing the color, or may be rearranged and displayed in the order of priority.
[0016]
Preferably, a tire and a wheel as a product as a tire / wheel search system are stored by a third data storage means for storing together with the tire and wheel dimension data, and the matching system according to claim 1 or 2. Product search means for searching for tires and wheels stored in the third data storage means having dimension data equal to the tire and wheel dimension data, and search results for outputting the searched tire and wheel brands by manufacturer Output means.
[0017]
In this case, based on the tire and wheel dimension data extracted by the matching system of the present invention, brands of tires or wheels that are actual products corresponding to the dimension data are output for each manufacturer.
[0018]
Thereby, the user can easily select tires and wheels suitable for the vehicle type owned by the user from among the products actually sold.
[0019]
The tire / wheel matching program according to the present invention is a combination of a tire and a wheel that can be attached to a desired vehicle type.Extract by calculationFirst data storage means for storing housing data, which are spatial dimensions in the tire house for each vehicle type, wheel and tireEach item consists of multiple itemsA second data storage means for storing dimension data;WantEnter the vehicle typeSelect a predetermined tire size and / or wheel size designation method, and the predetermined items necessary for the designation method among the plurality of itemsBased on input means for inputting a desired wheel size and / or tire size, and on the vehicle type input by the input means, the housing data of the vehicle type stored in the first data storage means is retrieved. The retrieved housing dataBased on the offset value of the wheel that can be installed based on the offset value and the housing dataA maximum allowable dimension of a tire that can be attached is calculated, and based on the desired tire size and / or wheel size input by the input means, tire and / or wheel dimension data stored in the second data storage means A computing means for retrieving and extracting a combination of tire and wheel dimension data that can be installed within the range of the maximum allowable dimension of the tire from the retrieved dimension data of the tire and / or wheel; This is for functioning as an output means for outputting a combination of dimension data.
[0020]
In the tire / wheel matching program of the present invention, the computer is caused to function as the following means. In the first data storage means, housing data, which is a space dimension in the tire house for each vehicle type, is stored, and in the second data storage means, tire and wheel dimension data are stored. The user inputs his / her own vehicle type by input means and inputs a desired tire size and / or wheel size.
[0021]
In the calculation means, the housing data of the vehicle type stored in the first data storage means is searched based on the inputted vehicle type, and the maximum allowable tire size that can be attached is calculated from the searched housing data. . Further, based on the inputted desired tire size and / or wheel size, the tire and wheel dimension data stored in the second data storage means are retrieved, and the retrieved tire and / or wheel dimension data are retrieved. A combination of tire and wheel dimension data that can be mounted within the range of the maximum allowable dimension of the tire is extracted. The output means outputs a combination of tire and wheel dimension data extracted by the computing means.
[0022]
In this way, just by inputting the desired tire and wheel size on the computer, the tire and wheel dimension data suitable for the user's own vehicle type is automatically selected from the enormous dimension data of the tire and wheel. It is possible to collate and allow the user to easily select.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of a tire / wheel matching system according to the present invention will be described with reference to the accompanying drawings. The tire / wheel matching system in the present embodiment causes the computer to retain the functions of each means by a program, but can also be achieved by using a dedicated device capable of performing such control. FIG. 1 is a block diagram showing the configuration of a tire / wheel matching system according to the present invention.
[0024]
The tire / wheel matching system of the present embodiment includes a first data storage means 1 for storing housing data, which is a space dimension in a tire house for each vehicle type, and a second data for storing tire and wheel dimension data. Based on the data storage means 2, input means 3 for inputting a vehicle type owned by the user, and inputting a desired tire size and / or wheel size, and the vehicle type input by the input means 3, The housing data of the vehicle type stored in the first data storage means 1 is searched, and the maximum allowable dimension of a tire that can be attached is calculated from the searched housing data, and the desired data inputted by the input means is calculated. Based on the tire size and / or the wheel size, the second data storage means 2 stores the Searching the tire and wheel dimension data and extracting from the retrieved tire and / or wheel dimension data a combination of tire and wheel dimension data that can be installed within the maximum allowable dimension range of the tire The calculation means 4 and the output means 5 for outputting the combination of the tire and wheel dimension data extracted by the calculation means 4 are provided.
[0025]
In the 1st data storage means 1, the housing data which are the space dimensions in the tire house for every vehicle model are memorize | stored. As shown in FIG. 3, which will be described later, the housing data includes a tire house width J which is a distance from the outermost surface pa of the fender 103 to the innermost surface pg where the tire or the like does not interfere with the suspension or the like in the axle direction, and the vehicle height direction. Is defined by a tire house height H set so as to be within a predetermined specified value from the outer diameter of the genuine tire.
[0026]
In the present embodiment, the first data storage means 1 also stores dimension data of genuine tires and genuine wheels for each vehicle type. The dimension data of the genuine tire and the genuine wheel is stored for use as a guide for inch-up when the tire is changed.
[0027]
In the second data storage means 2, tire and wheel dimension data are stored. Specifically, as tire dimension data, the tire width Co that is the length in the axial direction of the tire, the flatness ratio M that represents the ratio of the tire height to the tire width Co, and the rim diameter that is the diameter of the wheel that fits the tire L, the tire total width Cn that is the width of the tire when the tire is actually mounted on the wheel, the tire outer diameter F that is the length in the diameter direction of the tire when the wheel is mounted, etc. are stored, The rim diameter L of the wheel, the rim width K which is the length of the wheel in the axial direction, the offset value A indicating the distance from the center plane to the wheel plane regarding the wheel width, and the like are stored.
[0028]
FIG. 2 is a flowchart showing a flow of operation of the tire / wheel matching system in the present embodiment. The user inputs the possessed vehicle type by the input means 3 and inputs a desired tire size and / or wheel size (step S1).
[0029]
In the calculation means 4, the housing data and genuine tire / wheel size of the vehicle type stored in the first data storage means 1 are searched based on the input vehicle type, and the tires that can be attached from the searched housing data. Is calculated (step S2). The retrieved genuine tire / wheel size and housing data are displayed to the user (step S3). The genuine tire / wheel size is displayed for reference when the user inputs the tire or wheel size.
[0030]
Thereafter, the user selects a preferable one from predetermined search means described later, and inputs a desired tire or wheel size (step S4). Based on the retrieval means and the desired size, the tire or wheel dimension data stored in the second data storage means 2 is retrieved, and the tire or wheel dimension data is within the range of the maximum allowable tire size. A combination of tire and wheel dimension data that can be attached at step S5 is extracted (step S5).
[0031]
In the present embodiment, a priority order is assigned from the combination of tire and wheel dimension data extracted in step S5 as described later (step S6). As a result, tires and wheels closer to the user's wishes can be extracted. The extraction result extracted by the calculation means 4 is output by the output means 5 (step S7). At this time, the extraction result is output according to the priority assigned in step S6.
[0032]
In this way, simply by entering the desired tire or wheel size, the user can automatically extract the tire and wheel size that fits the user's own vehicle type from a vast amount of tire and wheel data, making it easy for the user Can be selected.
[0033]
Next, a method for calculating the maximum allowable tire size that can be attached from the actually retrieved housing data in step S2 of FIG. 2 will be described. FIG. 3 is a schematic view for calculating the maximum allowable dimension of the tire. In FIG. 3, the right side of the drawing is shown as the outside (fender 103 side), and the left side of the drawing is shown as the inside.
[0034]
First, the tire house width J in the axle direction and the tire house height H in the vehicle height direction are set for each vehicle type, and these binary values are stored in the first data storage means 1 as housing data. The tire house width J is set to a distance from the outermost surface pa of the fender 103 to the innermost surface pg where the tire or the like does not interfere with the suspension of the automobile, and the tire house height H is a predetermined regulation from the outer diameter of the genuine tire. It is set to be within the value.
[0035]
In order to obtain the maximum allowable tire size that can be adopted by an automobile having such housing data, a method for obtaining the maximum tire width Cm in the axle direction will be described first.
[0036]
Initially, a wheel offset value A is assumed. The offset value A refers to the distance from the center plane relating to the width of the wheel (hereinafter referred to as the wheel center plane) to the wheel mounting surface as described above. When the offset value A is assumed, the wheel center plane is assumed to be the center plane pd of the tire house width J, and the plane away from the center by the offset value A in the axle direction is the assumed wheel mounting plane pc. The assumed offset value A is determined by a predetermined calculation formula obtained empirically, but is set for convenience in order to assume a range B that the wheel center plane shown below can take. It does not always take the same value as the offset value A of the actual wheel to be extracted. In general, the offset value A is roughly determined by the rim diameter or rim width of the wheel, and the rim diameter and rim width change width from the genuine wheel are limited. For this reason, in order to assume the range B that the wheel center plane can take closer to the actual value, an offset value A is first assumed.
[0037]
Next, a range B that the wheel center plane can take is assumed. This range B is a region sandwiched between an assumed inner wheel center plane pe where the wheel center plane is the innermost side and an assumed outer wheel center plane pc where the wheel center plane is the outermost side. In the region B, the actual wheel center plane is set. The assumed outer wheel center plane pc is the aforementioned assumed wheel mounting surface pc, and the assumed inner wheel center plane pe is assumed to be a plane symmetrical to the assumed outer wheel center plane pc with respect to the center plane pd of the tire house width J.
[0038]
Subsequently, the maximum possible tire width Cm is assumed. As described above, the wheel center plane is assumed in the region B, and there is a range of possible values. Therefore, the maximum width Cm of the tire is assumed in consideration of the variation in the region B. Specifically, first, the maximum width C1 of the tire when the wheel center plane is set on the assumed outer wheel center plane pc is twice as long as the distance between the assumed outer wheel center plane pc and the outermost surface pa of the fender 103. Set the size. On the other hand, as the maximum width C2 of the tire when the wheel center plane is set to the assumed inner wheel center plane pe, a length that is twice the distance between the assumed inner wheel center plane pe and the innermost surface pg of the housing data is set. . The shorter one of the two maximum tire widths C1 and C2 is adopted as the tire maximum width Cm in the vehicle type. In the present embodiment, since C1 <C2, the distance C1 is adopted as the maximum tire width Cm. By adopting the shorter one, the extracted tire can be extracted without protruding outside the fender 103 or interfering with the suspension or the like regardless of where the wheel center plane is set in the region B. it can.
[0039]
Next, a method of obtaining a tire outer diameter F that satisfies the standard in the diameter direction of the tire / wheel will be described. If the tire outer diameter of the genuine tire and the tire outer diameter of the tire after the change are greatly different, an error with instruments such as a speedometer increases, which is not preferable. Accordingly, a predetermined specified value (for example, within an error of ± 3% of the tire outer diameter of a genuine tire) is set in advance so that only tires that fall within the error can be employed.
[0040]
Specifically, in FIG. 3, if the predetermined specified value is within ± 3%, the tire house height H is set to a length of 103% of the tire outer diameter of the genuine tire, and the minimum allowable diameter of the tire outer diameter is set. I is set to 97% of the tire outer diameter of the genuine tire. Therefore, a tire outer diameter allowable range G between the tire house height H and the minimum allowable diameter I of the tire outer diameter is set. A tire outer diameter F that falls within the tire outer diameter allowable range G is employed.
[0041]
As described above, the maximum tire width Cm in the tire / wheel axial direction and the tire outer diameter F in the tire / wheel diameter direction are calculated. These two values are the maximum allowable dimensions that can be attached to the tire calculated from the housing data.
[0042]
Next, a method of extracting tire and wheel dimension data that falls within the maximum allowable dimension range from the second data storage unit 2 in step S5 of FIG. 2 will be described. In the present embodiment, in step S4 in FIG. 2, a combination of tire and wheel dimension data when only the wheel rim diameter L is specified, which is one of the methods for specifying the wheel size of the wheel, is extracted. A method will be described.
[0043]
First, the tire dimension data having the value of the tire total width Cn within the range of the assumed maximum tire width Cm from the tire dimension data stored in the second data storage means 2 and the wheel dimensions Extract data combinations. Here, the tire total width Cn means the tire width when the tire is mounted on the wheel as described above.
[0044]
The total tire width Cn varies depending on the rim width K of the wheel even in a tire of the same size. This is because a tire of the same size can be mounted on the rim width K of a plurality of sizes of wheels due to the flexibility of the tire. Therefore, extraction processing is performed by a combination of tire dimension data and wheel dimension data. The tire dimension data thus extracted includes the value of the tire width Co when the wheel is not mounted. Subsequently, the tire flatness ratio M is calculated from the tire width Co, the wheel rim diameter L designated by the input means 3 and the assumed tire outer diameter F.
[0045]
Here, the tire outer diameter F is

As given. The flattening ratio M is calculated by substituting the tire outer diameter F, the tire width Co, and the designated wheel rim diameter L from the above formula.
[0046]
Tire size data matching the calculated flatness ratio M is re-extracted from the tire size data extracted by the tire total width Cn. The tire dimension data re-extracted by the flatness ratio M and the corresponding wheel dimension data are output by the output means 5 in step S7 of FIG.
[0047]
In this manner, appropriate tire and wheel dimension data can be easily extracted from a large amount of tire and wheel data.
[0048]
In the present embodiment, the method of specifying only the wheel rim diameter L in step S4 of FIG. 2 has been described as an example, but in addition, the method of specifying the wheel rim diameter L and offset value A, the wheel Tires and wheels can be extracted by a method of designating the rim diameter L and rim width K of the tire or a method of designating the tire size (tire width Co, flatness ratio M and rim diameter L of the corresponding wheel). In the method of specifying the wheel rim diameter L and the offset value A, the assumed offset value A in the above-described method of specifying only the wheel rim diameter L is a fixed value. The accuracy of the maximum width Cm of the tire assumed as a dimension becomes high, and the extraction process becomes quicker.
[0049]
In the method of designating the rim diameter L and the rim width K of the wheel, when extracting the combination of the tire dimension data and the wheel dimension data by the tire total width Cn based on the assumed maximum tire width Cm, One size wheel is combined with a size tire. This is because a wheel having a rim width of a plurality of sizes can be combined with a tire of one size, but only a wheel having a specified rim width K is searched in advance. Therefore, the extraction process becomes faster.
[0050]
In the method of specifying the tire size, the tire having a wheel rim width K such that the total tire width Cn when the specified tire width Co is mounted on the wheel does not exceed the assumed maximum width Cm of the tire. A combination of dimension data and wheel dimension data is extracted.
[0051]
Next, a procedure when the user performs an input operation based on the output unit 5 will be described. In the tire / wheel matching system of the present embodiment, various input operations are performed and output results are displayed based on the display of a computer monitor. FIG. 4 is a diagram showing an input screen for the possessed vehicle type, FIG. 5 is a diagram showing an input screen for a desired tire / wheel size, and FIG. 6 is a diagram showing a display screen for extraction results.
[0052]
First, in step S1 of FIG. 2, the user inputs the possessed vehicle type according to the vehicle type input screen as shown in FIG. 4. In this embodiment, the setting is made by selecting the manufacturer, vehicle name, and grade. The manufacturer column w1, the vehicle name column w2, and the grade column w3 are configured so that the user can easily select from the pull-down menu. When a user-owned automobile manufacturer is selected from the pull-down menu in the manufacturer column w1, only the vehicle name of the manufacturer is displayed as a pull-down menu in the pull-down menu in the vehicle name column w2. Similarly, the pull-down menu of the grade column w3 is limitedly displayed by selecting the vehicle name column w2.
[0053]
In this way, when the grade column w3 is selected, standard tire / wheel standard display and fender clearance are displayed as shown in the center of FIG. 4 in step S3 of FIG. Here, as described above, the tire width Co in FIG. 4 is the tire width when the wheel is not mounted, and is a standard value. On the other hand, the tire total width Cn is the tire width when the wheel is mounted, and varies depending on the rim width K of the wheel to be mounted even for the same tire. The clearance in the fender clearance is shown as the clearance D in FIG. 3 as the distance between the tire and the fender 103, and is displayed for the user's reference. The user confirms each value of the genuine tire / wheel and presses an OK button w4.
[0054]
When the OK button w4 in FIG. 4 is pressed, the desired tire / wheel size input screen in FIG. 5 is displayed as step S4 in FIG. In FIG. 5, it is possible to select from a total of four types of three methods of extracting by specifying the wheel size and one method of extracting by specifying the tire size, but a different method is adopted. It is also possible to do.
[0055]
The user selects an appropriate size designation method, checks a check box in the size designation method, and inputs a desired size in the size input field. In FIG. 5, the designation of only the wheel size designation rim diameter L is selected, the check box w5 is checked, and the rim diameter L of the desired wheel size is entered in the size input fields w5a, w5b, and w5c. Thereafter, by pressing the execution button w6, the calculation means 4 in FIG. 1 searches and extracts tire / wheel dimension data in step S5 in FIG.
[0056]
As a step S7 in FIG. 2, the extraction results by the computing means 4 in FIG. 1 are displayed as a list as shown in FIG. As shown in FIG. 6, the items entered on the desired tire / wheel size input screen of FIG. 5 are displayed in the search item display field w7. In FIG. 6, a plurality of search rim diameters L are displayed, and each rim diameter L can be switched by pressing a button. In the genuine data display field w8, genuine tire / wheel data displayed on the vehicle type input screen of FIG. 4 is displayed.
[0057]
The extraction result is displayed in the extraction result display field w9. By pressing the front display button w11 or the rear display button w12, the extraction results of the front and rear tires and wheels are displayed. In the extraction result display field w9 in the present embodiment, the type of tire extracted based on the search display item w7 is displayed on the vertical axis. The rim width K of the wheel is displayed on the horizontal axis, and the total tire width Cn, which is the tire width at the time of mounting, is displayed in the column of the rim width K suitable for each tire arranged on the vertical axis. 0 is displayed for the rim width of the non-conforming wheel.
[0058]
The list display field w10 displays a list of various dimension data of tires and wheels displayed in the extraction result display field w9. In the present embodiment, as will be described later, the dimension data that is the optimum display w9a in the extraction result display field w9 is displayed as a list. Furthermore, it is also possible to display a more detailed list of tires and wheels by pressing the list button w13. Further, not only the monitor display but also the extraction result can be printed and output.
[0059]
In the present embodiment, as step S6 in FIG. 2, a priority is assigned from data extracted from the extraction result extracted by the calculation means 4 to the outer diameter of the genuine tire of the vehicle type, and the extraction result together with the priority order. Configured to output.
[0060]
Here, a specific method for assigning priorities will be described. First, when a plurality of rim diameters L are specified in the extraction result, ascending order sorting by the rim diameter L is performed. As described above, the priority is determined for each size, and the order of the rim diameter may be the largest or smallest.
[0061]
Next, ascending order sorting by the rim width K is performed. Generally, since the rim width K is equal to or larger than the rim width of the genuine wheel, the rim width K is sorted in ascending order of the rim width. Subsequently, sorting in ascending order by tire width is performed. As with the rim width K, the tires are sorted in ascending order in order of increasing tire width.
[0062]
Further, ascending order sorting by the flatness ratio M is performed. Since the flatness ratio M is generally equal to or lower than that of genuine tires, they are sorted in ascending order of the flatness ratio. Finally, sorting in ascending order by tire outer diameter F is performed. Since the tire outer diameter F is preferably closer to the genuine tire outer diameter, the tire outer diameter F is sorted in ascending order in the order closer to the genuine tire outer diameter.
[0063]
As described above, ascending order is sorted for each value from the extraction results, and the results are displayed in priority order as in the extraction result display field w9 in FIG. Further, an extraction result having the tire outer diameter closest to the genuine tire outer diameter within the same rim diameter and rim width is displayed as an optimum size by changing the color as shown in the optimum display w9a of FIG. 6, and further, a list display field w10 Enumerate like this.
[0064]
In this case, the error from the actual speed in the speedometer can be reduced by reducing the error in the tire outer diameter as much as possible before and after the replacement of the tire and the wheel. In other words, when exchanging tires and wheels, it is desirable to minimize the error in the tire outer diameter before and after the exchange.
[0065]
Therefore, by assigning priorities in the order of dimension data as close as possible to the outer shape of the genuine tire from the extraction results extracted by the calculation means 4, it is possible to extract and output tires and wheels with no error before and after replacement. . In this way, it is possible to allow the user to select tires and wheels that can better meet the user's needs.
[0066]
In the present embodiment, a priority order is assigned to each size of tire and wheel. Furthermore, as for the priority display method, as in the optimum display w9a shown in FIG. 6, only the highest priority among the sizes is displayed in different colors. It is also possible to adopt a display method different from the present embodiment, such as using a plurality of colors and changing the colors according to the priority.
[0067]
In the present embodiment, the tire and the wheel that are the products are stored together with the tire and wheel dimension data, the third data storage means, the tire obtained by the matching system according to claim 1 or 2, and Product search means for searching for tires and wheels stored in the third data storage means having dimension data equal to the wheel dimension data, and search result output means for outputting the searched tire and wheel brands by manufacturer It is possible to make it the structure which comprises.
[0068]
In this case, based on the tire and wheel dimension data extracted by the matching system of the present invention, brands of tires or wheels that are actual products corresponding to the dimension data are output for each manufacturer.
[0069]
Thereby, the user can easily select tires and wheels suitable for the vehicle type owned by the user from among the products actually sold.
[0070]
【The invention's effect】
According to the tire / wheel matching system of the present invention, the user can input a desired tire and wheel size, and the tire and wheel size suitable for the vehicle type owned by the user can be selected from a vast amount of tire and wheel data. It is automatically extracted and can be easily selected by the user.
[Brief description of the drawings]
FIG. 1 is a block diagram showing the configuration of a tire / wheel matching system according to the present invention.
FIG. 2 is a flowchart showing a flow of operations of the tire / wheel matching system in the present embodiment.
FIG. 3 is a schematic view for calculating a maximum allowable dimension of a tire.
FIG. 4 is a diagram illustrating an input screen for an owned vehicle type.
FIG. 5 is a diagram showing an input screen for a desired tire / wheel size.
FIG. 6 is a diagram showing a display screen of extraction results.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... 1st data storage means 2 ... 2nd data storage means 3 ... Input means 4 ... Calculation means 5 ... Output means

Claims (4)

A tire / wheel matching system that extracts a combination of a tire and a wheel that can be attached to a desired vehicle type by calculation,
First data storage means for storing housing data which is a space dimension in the tire house for each vehicle type;
Second data storage means for storing dimensional data comprising a plurality of items for each tire and wheel;
The user inputs a desired vehicle type, selects a predetermined tire size and / or wheel size designation method, and sets a desired tire size and / or wheel size for a predetermined item necessary for the designation method among the plurality of items. Input means for input;
Based on the vehicle type input by the input means, the housing data of the vehicle type stored in the first data storage means is searched, and an offset value of a wheel that can be attached based on the searched housing data is obtained. Assuming that the maximum allowable tire size that can be mounted is calculated based on the offset value and the housing data, and the second data storage means is based on the desired tire size and / or wheel size input by the input means. Tire and / or wheel dimension data stored in the tire, and tire and wheel dimension data that can be mounted within the maximum allowable dimension range of the tire from the tire and / or wheel dimension data retrieved Operator for extracting combinations And,
An output means for outputting a combination of the tire and wheel dimension data extracted by the calculation means, and a tire / wheel matching system. The first data storage means further stores an outer diameter size of a genuine tire that is mounted in advance for each vehicle type, and the calculation means stores the vehicle type of the vehicle type from the extraction result extracted by the calculation means. 2. The tire / wheel matching system according to claim 1, wherein priorities are assigned from data close to an outer diameter of the genuine tire, and the extraction results are output together with the priorities. Third data storage means for storing tires and wheels as products together with dimensional data of the tires and wheels;
Product search means for searching for tires and wheels stored in the third data storage means having dimension data equal to the tire and wheel dimension data obtained by the matching system according to claim 1 or 2,
A tire / wheel search system comprising search result output means for outputting the searched tire and wheel brands by manufacturer. A computer to extract the combination of tires and wheels that can be attached to the desired vehicle,
First data storage means for storing housing data which is a space dimension in the tire house for each vehicle type;
Second data storage means for storing dimensional data comprising a plurality of items for each tire and wheel;
The user inputs a desired vehicle type, selects a predetermined tire size and / or wheel size designation method, and sets a desired tire size and / or wheel size for a predetermined item necessary for the designation method among the plurality of items. Input means for input,
Based on the vehicle type input by the input means, the housing data of the vehicle type stored in the first data storage means is searched, and an offset value of a wheel that can be attached based on the searched housing data is obtained. Assuming that the maximum allowable tire size that can be mounted is calculated based on the offset value and the housing data, and the second data storage means is based on the desired tire size and / or wheel size input by the input means. Tire and / or wheel dimension data stored in the tire, and tire and wheel dimension data that can be mounted within the maximum allowable dimension range of the tire from the tire and / or wheel dimension data retrieved Operator for extracting combinations , And program for functioning as an output means for outputting a combination of dimension data of the tire and the wheel extracted by the arithmetic means.

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