JP2010032439A - Attaching structure of liquid level inspecting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress the size of an attaching member, in an attaching structure of a liquid level inspecting device, wherein liquid level inspecting devices having different locking structures for attaching to the attaching member can be removably attached to the attaching member. <P>SOLUTION: Second locking parts 241-244 is an attaching structure for liquid level inspecting devices 10, 20 which can replace the first liquid level inspecting device 10 with the second liquid level inspecting device 20 for attaching to the attaching member 30, the first liquid level inspecting device 10 includes the first locking part for attaching the first liquid level inspecting device 10 to the attaching member 30. The second liquid level inspecting device 20 includes the second locking parts 241-244, whose structure is different from that of the first locking part and which is for attaching the second liquid level inspecting device 20 to the attaching member 30, and the attaching member 30 includes the third locking parts 31, 32 for locking with the first locking part; and with a part of the third locking parts 31, 32 as a portion 31 used in common, a part 241 of the second locking part 241-244 and the portion 31 used in common are made possible to be locked, in place of the first locking part. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a mounting structure for a liquid level detection device for detecting a liquid level.

  As the liquid level detection device, for example, an electric resistance type liquid level detection device that detects a change in the liquid level as a change in electric resistance in order to monitor the liquid level position of the fuel stored in the fuel tank of the automobile, and the liquid level A magneto-electric conversion element type liquid level detection device is used that detects this variation by a magneto-electric conversion element as a change in the magnetic flux density of the magnet. These liquid level detection devices are attached to a sub tank in the fuel tank. (See Patent Documents 1 and 2).

  The electric resistance type liquid level detection device includes a main body part, a float floating on the liquid surface, a rotating part rotatable with respect to the main body part, and connecting the float and the rotating part to move the float up and down. An arm that converts the rotational motion of the motor, an electric resistor fixed to the main body, and a sliding contact that is fixed to the rotating unit and that is electrically connected to the electric resistor while sliding on the electric resistor. Prepare. The electrical resistor and the sliding contact are configured such that the electrical resistance changes depending on the sliding position of the sliding contact with respect to the electrical resistor. The electric resistance type liquid level detection device detects the liquid level position of the liquid level by measuring the electric resistance. The main body is formed with a first locking portion for attaching the liquid level detection device to the sub tank.

  Magnetoelectric conversion element type liquid level detection device rotates the float up and down by connecting the main body, the float floating on the liquid level, the rotating part rotatable with respect to the main body part, and the float and rotating part. An arm that converts the rotational motion of the part, a magnet built in the rotational part, and a magnetoelectric conversion element such as a Hall IC built in the main body so as to intersect the magnetic flux of the magnet. The magnetoelectric conversion element type liquid level detection device detects the liquid level position by measuring the magnetic flux density of a magnet that intersects the magnetoelectric conversion element by the magnetoelectric conversion element. A second locking portion for attaching the liquid level detection device to the sub tank is formed in the main body portion.

  In the magnetoelectric conversion element type liquid level detection device, in order to protect the magnetoelectric conversion element from the fuel, the magnetoelectric conversion element is incorporated in the main body integrally molded from polyphenylene sulfide resin or the like having excellent chemical resistance and precision moldability. ing. On the other hand, since the electric resistance type liquid level detection device cannot adopt the configuration in which the electric resistor and the sliding contact are built in the main body, the electric resistance type liquid level detection device is immersed in the liquid. For this reason, the 1st latching | locking part of an electrical resistance type liquid level detection apparatus and the 2nd latching | locking part of a magnetoelectric conversion element type liquid level detection apparatus have a mutually different structure.

In addition, in the magnetoelectric conversion element type liquid level detection device, the magnetoelectric conversion element type liquid level detection device is built in the main body made of a resin excellent in chemical resistance, precision moldability, etc. It is used for liquid level detection of liquids with low insulation. On the other hand, since the electrical resistance type liquid level detection device has a configuration in which the electrical resistor and the sliding contact are immersed in the liquid, the electrical resistance type liquid level detection device has a liquid level with high insulation. It is used for detection. This is because corrosion (so-called galvanic corrosion) may occur when an electrical resistor or a sliding contact is immersed in a liquid having low insulation properties. The liquid with low insulation is, for example, a mixed fuel of gasoline and alcohol such as ethanol, and moisture in the alcohol lowers the insulation of the mixed fuel. In the mixed fuel of high concentration ethanol and gasoline, the insulating property of the mixed fuel is lower.
Japanese Patent Laid-Open No. 10-26552 JP 2007-147582 A

  In recent years, in order to reduce carbon dioxide, there has been an increasing demand for using high-concentration ethanol and gasoline mixed fuel in vehicles. For this reason, there is a possibility that a vehicle using a mixed fuel of high-concentration ethanol and gasoline and a vehicle using only a mixed fuel of low-concentration ethanol and gasoline or gasoline will be produced in the same vehicle type.

  Magnetoelectric transducer type liquid level detector is used for high concentration ethanol and gasoline mixed fuel, and electric resistance type liquid level detector is used for low concentration ethanol and gasoline mixed fuel and gasoline. The Therefore, an electric resistance type liquid level detection device can be attached to the sub tank, and a magnetoelectric conversion element type liquid level detection device can be attached to the sub tank instead of the electric resistance type liquid level detection device. There is a request.

  As described above, the first engagement portion of the electric resistance type liquid level detection device and the second engagement portion of the magnetoelectric conversion element type liquid level detection device have different structures. If the attachment portion for the stop portion and the attachment portion for the second locking portion are arranged side by side in the sub tank, there arises a problem that the sub tank becomes large.

  The present invention has been made in consideration of such circumstances, and a liquid level detection device that can be mounted on a mounting member by replacing a liquid level detecting device having a different structure of a locking portion for mounting on the mounting member. In the mounting structure, the object is to suppress the size of the mounting member.

  The present invention employs the following technical means to achieve the above object.

  According to the first aspect of the present invention, the first liquid level detecting device can be attached to the mounting member, and the second liquid level detecting device can be attached to the mounting member instead of the first liquid level detecting device. In the mounting structure of the detection device, the first liquid level detection device includes a first locking portion for mounting the first liquid level detection device to the mounting member, and the second liquid level detection device includes the first locking portion. A second locking portion having a structure different from the structure, the second locking portion for mounting the second liquid level detection device to the mounting member, wherein the mounting member locks the first locking portion; It is provided with 3 latching | locking parts, It replaces with a 1st latching | locking part by making a part of 3rd latching part into a shared part, and makes it possible to latch a part and 2nd latching part of a shared part. To do.

  According to this configuration, a part of the third locking part of the attachment member is used as a shared part, and instead of the first locking part, a part of the second locking part having a different structure from the first locking part, The common part can be locked. For this reason, compared with the case where the attachment part for 1st latching | locking parts and the attachment part for 2nd latching | locking parts are arranged in parallel with an attachment member, a part and shared part of a 2nd latching | locking part are used. The size of the mounting member can be reduced by the amount of locking.

  According to the invention of claim 2, the first locking portion includes the first fitting portion, a part of the second locking portion is the second fitting portion, and the shared portion is the first fitting portion. It is the to-be-fitted part which can be fitted to a part, Comprising: It replaces with a 1st fitting part, and is a to-be-fitted part which can be fitted with a 2nd fitting part, It is characterized by the above-mentioned.

  According to this configuration, the shared portion is a fitted portion that can be fitted to the first fitting portion of the first locking portion, and instead of the first fitting portion, the second locking portion has a second fitting portion. It is set as the to-be-fitted part which can be fitted with 2 fitting parts. For this reason, the size of the mounting member can be suppressed with a simple structure.

  According to the invention of claim 3, the first liquid level detection device includes a first main body portion on which a first locking portion is formed, a first float that floats on the liquid surface of the liquid to be detected, and a first main body portion. A first rotating part that is rotatable relative to the first arm, a first arm that connects the first float and the first rotating part to convert the vertical movement of the first float into a rotational movement of the first rotating part; An electrical resistor fixed to the main body, and a sliding contact that is fixed to the first rotating unit and that is electrically connected to the electrical resistor while sliding on the electrical resistor, The sliding contact is configured to change the electrical resistance depending on the sliding position of the sliding contact with respect to the electrical resistor, and is a liquid level detection device that detects the liquid level position of the liquid level by measuring the electrical resistance. The second liquid level detection device includes a second main body portion on which a second locking portion is formed, and a second screen that floats on the liquid level. The second rotary part rotatable with respect to the second main body part, the second float and the second rotary part are connected to convert the vertical movement of the second float into the rotary movement of the second rotary part. A second arm, a magnet built in the second rotating part, and a magnetoelectric conversion element built in the second main body so as to cross the magnetic flux of the magnet, and crossing the magnetoelectric conversion element by the magnetoelectric conversion element The liquid level detecting device detects the liquid level position by measuring the magnetic flux density of the magnet.

  According to this configuration, since the first liquid level detection device cannot adopt a configuration in which the electric resistor and the sliding contact are built in the first main body, the electric resistor and the sliding contact are directly immersed in the liquid. It is the composition which makes it. For this reason, if an electrical resistor or a sliding contact is immersed in a liquid with low insulation, corrosion may occur, and therefore the first liquid level detection device cannot be used for liquid level detection of a liquid with low insulation. Therefore, the one liquid level detection device is used for liquid level detection of a liquid having high insulation.

  Further, according to this configuration, in the second liquid level detection device, since the magnetoelectric conversion element is built in the second main body portion and the magnetoelectric conversion element is provided from the liquid, the second liquid level detection device is a liquid with low insulation. It can be used for liquid level detection. Accordingly, in the mounting structure of the liquid level detection device that can be mounted on the mounting member by replacing the liquid level detection device for liquid with low insulation and the liquid level detection device for liquid with high insulation, the size of the mounting member Can be suppressed.

  Hereinafter, a case where the mounting structure of the liquid level detection device according to the present invention is applied to a fuel level gauge mounted on an automobile will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the mutually same or equivalent part in a figure.

(Constitution)
In FIG. 1 and FIG. 2, the upper part shows the upper part of the state where the fuel level gauges 10 and 20 are attached to the automobile. The fuel level gauges 10, 20 detect the liquid level positions A 1, A 2 of the fuel A, and are attached to the sub tank 30 disposed in the fuel tank 40. The sub tank 30 incorporates a fuel pump for sending the fuel A in the fuel tank 40 to the outside of the fuel tank 40, for example, the engine. A flange portion 41 is provided at the upper end of the sub tank 30, and the sub tank 30 is fixed to the fuel tank 40 by screwing or the like with the flange portion 41 fitted into the opening 42 of the fuel tank 40. In FIG. 1, the first fuel level gauge 10 is attached to the sub tank 30, and in FIG. 2, the second fuel level gauge 20 is attached to the sub tank 30 instead of the first fuel level gauge 10.

  In FIGS. 1 and 2, the subtank 30 is schematically shown smaller in order to make it easier to see FIGS. 1 and 2.

  In FIG. 1, the first fuel level gauge 10 includes a first main body portion 14, a first float 11 that floats on the liquid level of the fuel A, and a first rotating portion 13 that can rotate with respect to the first main body portion 14. The first float 11 and the first rotating part 14 are connected to each other, and the first arm 12 that converts the vertical movement of the first float 11 into the rotational movement of the first rotating part 13 is provided. A ceramic substrate 141 on which an electric resistor 142 is formed is fixed to the first main body portion 14, and the first rotating portion 13 slides on the electric resistor 142 while being electrically connected to the electric resistor 142. The sliding contact 131 is fixed.

  The electrical resistor 142 and the sliding contact 131 are configured such that the electrical resistance changes depending on the sliding position of the sliding contact 131 with respect to the electrical resistor 142. Specifically, the electrical resistor 142 includes electrical resistors 142A and 142B that are insulated and separated from each other, and the electrical resistors 142A and 142B are configured to be electrically connected by the sliding contact 131. . The electrical resistor 142A is connected to the terminal 143A, the electrical resistor 142B is electrically connected to the terminal 143B, and the electrical resistance between the terminals 143A and 143B is the sliding position of the sliding contact 131 with respect to the electrical resistor 142 It depends on. That is, the electrical resistance between the terminals 143A and 142B is the electrical resistance formed in the order from the terminal 143A to the electrical resistor 142A, the sliding contact 131, the electrical resistor 142B, and the terminal 143B, or in the opposite order. It becomes electric resistance by the route. For this reason, the electrical resistance between the terminals 143A and 143B varies depending on the sliding position of the sliding contact 131 with respect to the electrical resistor 142. The first fuel level gauge 10 can detect the liquid level positions A1 and A2 by measuring the electric resistance.

  In addition, since the structure which incorporates the electrical resistor 142 and the sliding contact 131 in the 1st main-body part 14 cannot be taken, it has the structure which the electrical resistor 142 and the sliding contact 131 are directly immersed in the liquid. For this reason, if the electrical resistor 142 and the sliding contact 131 are immersed in a liquid with low insulation, corrosion (electro-corrosion) may occur. Therefore, the first fuel level gauge 10 has a liquid surface with low insulation. It cannot be used for detection. Therefore, the first fuel level gauge 10 is used for liquid level detection of a liquid having high insulation.

  As shown in FIGS. 3 to 5, the first main body portion 14 is formed with an attachment hole 144 and a first elastic arm portion 145 for attaching the first fuel level gauge 10 (first main body portion 14) to the sub tank 30. A claw portion 145A is formed at the tip of the first elastic arm portion 145. The first main body portion 14 is made of an elastic material such as polyacetal (polyoxymethylene) resin, and the first elastic arm portion 145 is formed integrally with the first main body portion 14. Further, as shown in FIG. 5, a first fitting portion 144 </ b> A is formed by forming a substantially “inverted T-shaped” attachment hole 144 in the first main body portion 14. The mounting hole 144, the first fitting portion 144A, the first elastic arm portion 145, and the claw portion 145A constitute a first locking portion for mounting the first fuel level gauge 10 to the sub tank 30. 3 to 5, the first main body with the first rotating part 13, the first arm 12, and the first float 11 removed from the first fuel level gauge 10 in order to make it easier to see FIGS. 3 to 5. Part 14 is shown.

  As shown in FIGS. 6 and 7, the sub tank 30 is formed with a fitted portion 31 that is engaged with the first fitting portion 144 </ b> A and a stopper 32 that is engaged with the first elastic arm portion 145. As shown in FIG. 6, a fitting groove 31 </ b> A is formed in the substantially “inverted T-shaped” fitting portion 31 as shown in FIG. 7, and the fitting groove 31 </ b> A of the fitting portion 31 has a first groove. It is comprised so that 1 fitting part 144A may fit. Further, the stopper 32 is formed with a recess 32A which will be described later. The fitted portion 31, the fitted groove 31 </ b> A, the stopper 32, and the recessed portion 32 </ b> A constitute a third locking portion that locks with the first locking portion of the first fuel level gauge 10.

  As shown in FIG. 4, the first main body 14 is mounted on the sub tank 30 by aligning the mounting hole 144 of the first main body 14 and the fitted portion 31 of the sub tank 30. At this time, the claw portion 145 </ b> A of the first elastic arm portion 145 is fitted into the concave portion 32 </ b> A of the stopper 32. Thereafter, the first main body portion 14 is moved downward in FIG. 4 with respect to the sub tank 30, and the first fitting portion 144A of the first main body portion 14 is fitted to the sub tank 30 as shown in FIG. Fit into the mating groove 31A.

  Thereby, as shown in FIG. 3, the first fuel level gauge 10 (first main body portion 14) is attached to the sub tank 30. In FIG. 3, the upper end portion of the fitted portion 31 is in contact with the upper end portion of the attachment hole 144, so that the first main body portion 14 can be moved downward from the state shown in FIG. 3 with respect to the sub tank 30. It is not possible.

  Moreover, when moving the 1st main-body part 14 from the state shown in FIG. 4 to the state shown in FIG. 3, the 1st elastic arm part 145 bends to the left in FIG. As a result, the claw 145A of the first elastic arm 145 is disengaged from the recess 32A of the stopper 32 and the first elastic arm 145 is bent to the left, as shown in FIG. Return to. Thereby, since the claw portion 145A of the first elastic arm portion 145 contacts the lower end portion of the stopper 32, the first main body portion 14 can be moved upward from the state shown in FIG. It is not possible.

  In this way, the first fuel level gauge 10 (first main body portion 14) is attached to the sub tank 30.

  Next, the second fuel level gauge 20 will be described.

In FIG. 2, the second fuel level gauge 20 includes a second main body portion 24, a second float 21 floating on the liquid surface of the fuel A, and a second rotating portion 23 that can rotate with respect to the second main body portion 24. A second arm 22 that connects the second float 24 and the second rotating part 23 to convert the vertical movement of the second float 21 into a rotating movement of the second rotating part 23, and a magnet built in the second rotating part. And a magnetoelectric conversion element such as a Hall IC incorporated in the second main body 24 so as to intersect with the magnetic flux of the magnet. The second fuel level gauge 20 detects the liquid level positions A1 and A2 by measuring the magnetic flux density of the magnet that intersects the magnetoelectric conversion element by the magnetoelectric conversion element. Since the magnetoelectric conversion element is protected from the liquid, the second fuel level gauge 20 can be used for detecting the liquid level of the liquid having low insulation.

  As shown in FIGS. 9 and 10, the second main body portion 24 has a second fitting portion 241, a slide portion 242, and a protrusion for attaching the second fuel level gauge 20 (second main body portion 24) to the sub tank 30. Portions 243 and 244 are formed. The second fitting part 241, the slide part 242, and the projecting parts 243 and 244 constitute a second locking part for attaching the second fuel level gauge 20 to the sub tank 30. Thus, it can be said that the second locking portion of the second fuel level gauge 20 has a structure different from the structure of the first locking portion of the first fuel level gauge 10. This is because the second fuel level gauge 20 incorporates a magnetoelectric conversion element in the second main body 24 to protect the magnetoelectric conversion element from the fuel A, whereas the first fuel level gauge 10 has an electrical resistance. This is because the body 142 and the sliding contact 131 cannot be built in the first main body portion 14, and thus are configured to be directly immersed in the liquid.

  9 and 10, the second main body with the second rotating portion 23, the second arm 22, and the second float 21 removed from the second fuel level gauge 20 in order to make it easier to see FIGS. 9 and 10. Part 24 is shown. Further, the second main body portion 24 is schematically shown for easy viewing of FIG.

  In the sub tank 30, in addition to the fitted portion 31 that locks with the second fitting portion 241 instead of the first fitting portion 144A, and the stopper 32, the guide portion 33 that locks with the slide portion 242; Elastic arm portions 34 that are engaged with the projections 243 and 244 are formed. As shown in FIG. 10, the second fitting portion 241 is configured to fit in the fitted groove 31 </ b> A of the fitted portion 31, and the slide portion 242 is configured to fit in the guide groove 33 </ b> A of the guide portion 33. Is done. In order to fit in the fitted groove 31A of the fitted part 31, the second fitting part 241 is formed in a shape different from the slide part 242 as shown in FIG.

  A hooking claw 34 </ b> A is formed at the tip of the elastic arm portion 34, the second fitting portion 241 is fitted into the fitted groove 31 </ b> A of the fitted portion 31, and the slide portion 242 is inserted into the guide groove 33 </ b> A of the guide portion 33. Is configured so that the hooking claw 34 </ b> A is hooked on the protrusion 243. This prevents the second fuel level gauge 20 from being detached from the sub tank 30.

  As described above, the second fitting of the second locking parts of the second fuel level gauge 20 is performed using the fitted part 31 (fitting groove 31A) of the third locking part of the sub tank 30 as a shared part. The part 241 is configured to be fitted into the fitted groove 31A.

  The first fuel level gauge 10 corresponds to the first liquid level detection device described in the claims, and the mounting hole 144, the first fitting portion 144A, the first elastic arm portion 145, and the claw portion 145A are described in the claims. The second fuel level gauge 20 corresponds to the second liquid level detection device described in the claims, and the second fitting portion 241, the slide portion 242, and the projecting portions 243 and 244 include This corresponds to the second locking portion described in the claims. The sub tank 30 corresponds to the attachment member described in the claims, and the fitted portion 31, the fitted groove 31A, the stopper 32, and the recess 32A correspond to the third locking portion described in the claims. The second fitting portion 241 corresponds to a part of the second locking portion described in the claims, and the fitted portion 31 and the fitted groove 31A correspond to a shared portion described in the claims.

(Function and effect)
Below, the effect of the attachment structure of the fuel level gauges 10 and 20 and the sub tank 30 will be described based on FIG. 9 and FIG.

  As a comparative example of the present invention, based on FIG. 11, an attachment portion for the first locking portion of the first fuel level gauge 10 and an attachment portion for the second locking portion of the second fuel level gauge 20 are provided. The case where it arranges in parallel with the sub tank 30A is demonstrated. Also in this comparative example, the first locking portion of the first fuel level gauge 10 includes the mounting hole 144, the first fitting portion 144A, the first elastic arm portion 145, and the claw portion 145A. The second locking portion includes a second fitting portion 241, a slide portion 242, and projections 243 and 244, and the third locking portion of the sub tank 30 includes the fitted portion 31, the fitted groove 31A, and a stopper. In the point which consists of 32 and the recessed part 32A, it is the same as that of this invention.

  However, in this comparative example, the guide portion 33B that engages with the second fitting portion 241 is formed in the sub tank 30A without using the fitted portion 31 and the fitted groove 31A as a shared portion of the third locking portion. is doing. Specifically, the second fitting portion 241 is configured to fit into the guide groove of the guide portion 33B. Therefore, the mounting portion for the first locking portion is the third locking portion, but the mounting portion for the second locking portion is the guide portion 33 (guide groove 33A), the elastic arm portion 34, and the guide portion 33B. It has become.

  In contrast to this comparative example, in the above-described example of the present invention, as shown in FIG. 9, the mounting portion for the first locking portion is the third locking portion, but the mounting for the second locking portion. The parts are a guide part 33 (guide groove 33A), an elastic arm part 34, and a fitted part 31 (fitted groove 31A). For this reason, among the third locking portions of the sub tank 30, the fitted portion 31 (the fitted groove 31A) is used as a shared portion, and the first fitting portion 144A among the first locking portions of the first fuel level gauge 10 is used. Instead, the second fitting portion 241 of the second locking portion of the second fuel level gauge 20 is configured to be fitted into the fitting groove 31A. Therefore, the first fuel level gauge 10 mounting portion for the first locking portion and the second fuel level gauge 20 mounting portion for the second locking portion are compared with the comparative example in which the sub tank 30A is juxtaposed. Then, the second fitting part 241 that is a part of the second locking part is fitted into the fitted groove 31A of the fitted part 31 that is a shared part of the third locking part, that is, In FIG. 11, the size of the sub tank 30 can be reduced at the portion of the length L.

  Further, the common portion of the third locking portion is a fitted portion 31 (fitted groove 31A) that can be fitted to the first fitting portion 144A of the first locking portion, and the first fitting portion Instead of 144A, a fitted portion 31 that can be fitted to the second fitting portion 241 of the second locking portion is used. For this reason, the size of the sub tank 30 can be suppressed with a simple structure.

  Further, in the first fuel level gauge 10, the electric resistor 142 and the sliding contact 131 cannot be built in the first main body 14, so that the electric resistor 142 and the sliding contact 131 are immersed in the liquid. It is the composition which makes it. For this reason, if the electrical resistor 142 or the sliding contact 131 is immersed in a liquid with low insulation properties, such as a high-concentration ethanol / gasoline fuel, corrosion (electric corrosion) may occur. The gauge 10 cannot be used for liquid level detection of a liquid having low insulation. Therefore, the first fuel level gauge 10 is used for liquid level detection of a liquid having high insulation.

  On the other hand, in the second fuel level gauge 20, since the magnetoelectric conversion element is built in the second main body portion 24, it can be used for liquid level detection of a liquid having low insulation. Accordingly, in the mounting structure of the liquid level detection device that can be mounted on the sub tank 30 by replacing the liquid level detection device for liquid with low insulation and the liquid level detection device for liquid with high insulation, the size of the sub tank 30 Can be suppressed.

(Modification)
In the above-described example, the second fitting portion 241 is fitted in the fitted groove 31A of the fitted portion 31, but this is not restrictive. As shown in FIG. 12, in the second main body portion 24A, a second fitted groove 241A is formed instead of the second fitted portion 241, and the convex portion 31B of the fitted portion 31 is formed as the second fitted groove. It is also possible to adopt a configuration that fits to 241A. Even in this modification, the same effects as described above can be obtained.

  In this modification, the second fitted groove 241A, the slide part 242, and the projecting parts 243 and 244 correspond to the second locking part described in the claims, and the fitted part 31 and the stopper 32 are the claims. This corresponds to the third locking portion described in the above. The second fitted groove 241A corresponds to a part of the second locking portion described in the claims, and the fitted portion 31 corresponds to the shared portion described in the claims.

  As is clear from FIGS. 1, 2, and 9, the rotation centers of the arms 12 and 22 of the fuel level gauges 10 and 20 are different from each other. However, as shown in FIGS. , 22 can be adjusted to be the same liquid level detection range (liquid level positions A1 to A2) by adjusting the lengths and bending shapes of the two and 22 with each other.

It is a front view which shows the attachment structure to the sub tank of the 1st fuel level gauge by one Embodiment of this invention. It is a front view which shows the attachment structure to the sub tank of the 2nd fuel level gauge by one Embodiment of this invention. It is an enlarged view of the state which removed the 1st rotation part from the III section in FIG. It is an enlarged view for demonstrating attachment of a 1st main part. It is a front view of the 1st book part. It is an enlarged view of the sub tank of the III section in FIG. It is a VII arrow line view in FIG. It is the VIII-VIII sectional view taken on the line in FIG. It is an enlarged view of the state which removed the 2nd rotation part from the IX part in FIG. FIG. 10 is a view taken in the direction of arrow X in FIG. 9. It is explanatory drawing which shows the comparative example of FIG. It is typical explanatory drawing which shows the modification of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 1st fuel level gauge (1st liquid level detection apparatus), 11 1st float 12 1st arm, 13 1st rotation part, 131 Sliding contact, 14 1st main-body part 141 Ceramic substrate, 142, 142A, 142B Electricity Resistor 143, 143A, 143B Terminal, 144 Mounting hole (first locking part)
144A First fitting portion (first locking portion), 145 First elastic arm portion (first locking portion)
145A Claw part (first locking part), 20 Second fuel level gauge (second liquid level detection device)
21 2nd float, 22 2nd arm, 23 2nd rotation part 24, 24A 2nd main-body part, 241 2nd fitting part (2nd latching | locking part, one part)
241A Second fitting groove (second locking portion, part), 242 Slide portion (second locking portion)
243, 244 Protruding part (second locking part), 30, 30A Sub tank (attachment member)
31 part to be fitted (third locking part, common part), 31A groove to be fitted (third locking part, common part)
31B Convex part (third locking part, shared part), 32 stopper (third locking part)
32A Concave portion (third locking portion), 33, 33B guide portion, 33A guide groove 34 elastic arm portion, 34A hook claw, 40 fuel tank, 41 flange portion 42 opening, A fuel (liquid), A1, A2 liquid surface position

Claims (3)

In the mounting structure of the liquid level detection device capable of mounting the first liquid level detection device to the mounting member, and capable of mounting the second liquid level detection device to the mounting member instead of the first liquid level detection device,
The first liquid level detection device includes a first locking portion for attaching the first liquid level detection device to the attachment member,
The second liquid level detection device is a second locking portion having a structure different from the structure of the first locking portion, and a second locking for mounting the second liquid level detection device to the mounting member. Part
The mounting member includes a third locking portion that locks with the first locking portion,
A liquid surface characterized in that a part of the third locking part is used as a shared part, and the part of the second locking part and the shared part can be locked instead of the first locking part. Detection device mounting structure. The first locking portion includes a first fitting portion,
The part of the second locking portion is a second fitting portion;
The shared portion is a fitted portion that can be fitted to the first fitting portion, and is a fitted portion that can be fitted to the second fitting portion instead of the first fitting portion. The mounting structure of the liquid level detection device according to claim 1. The first liquid level detection device is rotatable with respect to the first main body portion on which the first locking portion is formed, a first float that floats on the liquid surface of the liquid to be detected, and the first main body portion. A first arm that connects the first float and the first rotating part to convert the vertical movement of the first float into a rotational movement of the first rotating part, and the first body. An electrical resistor fixed to a portion, and a sliding contact fixed to the first rotating portion and sliding on the electrical resistor while being electrically connected to the electrical resistor. The resistor and the sliding contact are configured such that the electrical resistance changes depending on the sliding position of the sliding contact with respect to the electrical resistor, and the liquid level position of the liquid level is detected by measuring the electrical resistance. A liquid level detecting device,
The second liquid level detection device is rotatable with respect to the second main body portion on which the second locking portion is formed, a second float floating on the liquid surface of the liquid, and the second main body portion. A second arm that connects the second rotating part, the second float, and the second rotating part to convert the vertical movement of the second float into a rotational movement of the second rotating part; and the second rotating part And a magnetoelectric conversion element built in the second main body so as to cross the magnetic flux of the magnet, and the magnetic flux density of the magnet crossing the magnetoelectric conversion element by the magnetoelectric conversion element The liquid level detection device mounting structure according to claim 1, wherein the liquid level detection device detects the liquid level position by measuring the liquid level.

Images