JPH0436414Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] The present invention relates to a liquid level detection device that detects the remaining amount of liquid in a liquid container such as a fuel tank, and is particularly applicable to a liquid level detection device that is installed near a car engine. The present invention relates to a liquid level detection device suitable for being attached to the wall of an oil tank for supplying oil as a lubricant.

[Problems to be solved by conventional techniques and ideas]

2. Description of the Related Art Conventionally, vehicles have been equipped with devices that detect the amount of engine oil and, when the oil amount falls below a predetermined level, display a warning to that effect on the front panel of the driver's seat. The liquid level detection device used in this device is generally of the so-called electromagnetic detection type, in which when a float holding a magnet moves up and down according to the liquid level, a magnetoelectric conversion element installed on the fixed side detects this and outputs a signal. be.

Figures 5 and 6 show this type of liquid level detection device installed on the oil tank wall.
The one in the figure has the detection device fixed to the floor of the oil tank, and the one in FIG. 6 has it fixed to the side wall.

In the figure, 1 is a float holding a magnet (not shown), 2 is a sensor section equipped with a magnetoelectric transducer (not shown) that detects the movement of the magnet, 3 is a support member for these, and 4 is a support member. 3 is a retainer for attaching to the oil tank 5 (container), 6 is a lead wire for guiding an output signal from the sensor section to the outside of the container, and 7 is a liquid level.

The type shown in Figure 5 has a relatively simple structure because the entire device is linear, but detection devices with different dimensions are prepared for different distances from the retainer, which is the mounting part, to the liquid level to be detected. Because of this problem, the device must be installed at L as shown in Figure 6.
A type that is molded and fixed at a predetermined height position on the side wall of the container is used.

However, this L-type type has a complicated structure, the distance from the mounting part to the tip of the detection part is long, and the L-shape causes damage to the base of the detection part due to external vibration. A large force was applied to the entire supporting member and there was a risk of damage.

Therefore, an object of the present invention is to provide a liquid level detection device that is resistant to vibration, has a simple structure, and is easy to assemble.

[Means to solve the problem]

In order to solve the above problems, the liquid level detection device according to the present invention includes a float that holds a magnet, a sensor that supports the float so that it can move up and down, and has a built-in magnetoelectric conversion element that is activated by the up and down movement of the magnet. and a support member for attaching the sensor section to a container, the support member comprising: a flange section for attaching to the container; a sensor fixing section for fixing the upper and lower ends of the sensor section together; The flange portion and the sensor fixing portion are connected to each other, and a connecting portion extending in the horizontal direction through which a lead wire for extracting an output signal from the sensor portion to the outside of the container is inserted is integrally formed. an upper end fixing part extending horizontally from the connecting part, a leg extending vertically downward from the connecting part, and a lower end fixing part extending parallel to the upper end fixing part from the lower end of the leg. It is characterized in that the upper end and lower end of the sensor section are fixed to the upper end fixing part and the lower end fixing part, respectively.

[Effect]

In the above configuration, the support member that attaches the sensor part to the container is constructed by integrally molding the flange part, the sensor fixing part, and the connecting part, and the sensor part is fixed by the sensor fixing part, so that Since it is divided into two parts,
The structure is simple and assembly is easy.

Moreover, the sensor fixing part has an upper end fixing part extending horizontally from the coupling part, a leg part extending vertically downward from the coupling part, and a lower end fixing part extending parallel to the upper fixing part from the lower end of the leg. Since the upper and lower ends of the sensor part are fixed to the upper end fixing part and the lower end fixing part, respectively, the sensor part is supported not only by the upper end fixing part but also by the lower end fixing part via the legs. In addition, since the sensor fixing part and the sensor part form a rectangular frame, the sensor fixing part will not be damaged even if a large force is applied to the entire support member due to external vibration.

〔Example〕

FIG. 1 is a partially exploded perspective view of an embodiment of the present invention. In the figure, the float 1 is ring-shaped;
A columnar sensor section 2 passes through it. The support member 3 has a flange portion 3a for attachment to a container (not shown) at one end, a sensor fixing portion 3h for fixing both the upper and lower ends of the sensor portion 2, and the flange portion 3a and the sensor fixing portion 3h. A horizontally extending connecting part 3c having a lead wire through hole 3b for inserting a lead wire for taking out an output signal from the sensor part 2 to the outside of the container is formed by a synthetic resin material into a substantially L shape. It is formed by integral molding. The sensor fixing part 3h includes a hollow cylindrical upper end fixing part 3f extending horizontally from the connecting part 3c, and a connecting part 3.
The leg part 3d extends vertically downward from c, and the lower end fixing part 3g extends from the lower end of the leg part 3d in parallel to the upper end fixing part 3f. They are each fixed to the lower end fixing part 3g. The upper end of the sensor section 2 is integrated by fitting into the hollow cylindrical upper end fixing section 3f, and a lead wire (not shown) from the sensor section 2 is inserted into the through hole 3b. Sensor part 2
The lower end of is fixed to the lower end fixing part 3g with a screw 8 as shown in the figure.

FIG. 2 shows the procedure for attaching the liquid level detection device to the container, and is explained by moving the container 5 relative to the liquid level detection device.

That is, the detection device is inserted into the mounting hole 9 provided in the wall of the container 5 from the side of the leg portion 3d, and approximately the entire body is inserted into the mounting hole 9 through the L-shaped corner. The flange portion 3a is then fixed to the wall of the container 5 using a retainer or the like.

3 and 4 show an example in which the support member 3 in the embodiment shown in FIG. 1 is partially deformed. Third
In the figure, the leg part 3d has an arcuate cross section to improve the strength in the horizontal direction (in the direction of the arrow).
The width is widened at the base (on the side of the connecting part) and gradually decreases toward the tip (on the opposite side of the connecting part) to reduce the weight of the tip and improve its strength against vibration.

[Effect of idea]

As explained above, according to the present invention, the support member for attaching the sensor part to the container is formed by integrally molding the flange part, the sensor fixing part, and the connecting part, which reduces the number of parts and improves assembly. , strength and reliability can be improved, and
Cost reduction can be achieved. Further, the sensor part is supported not only by the upper end fixing part but also by the lower end fixing part via the legs, and the sensor fixing part and the sensor part form a rectangular frame. Therefore, even if a large force is applied to the entire support member due to external vibration, it will not be damaged, and sufficient strength against vibration can be obtained.

Further, according to a preferred embodiment of the present invention, the leg portion of the sensor fixing portion is wide especially on the connecting portion side;
It gradually becomes narrower towards the opposite side,
Alternatively, since the cross section of the leg portion of the sensor fixing portion is approximately arcuate, the strength against vibration is further improved.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of an embodiment of the present invention, Fig. 2 is a diagram illustrating the procedure for attaching the embodiment of the present invention to a container, and Figs. 3 and 4 are each an example of the embodiment of the present invention. A perspective view showing a modified example, and FIGS. 5 and 6 are explanatory diagrams of a mounting structure of a conventional liquid level detection device. DESCRIPTION OF SYMBOLS 1...Float, 2...Sensor part, 3...Support member, 3a...Flange part, 3c...Connection part, 3
h...sensor fixing part, 5...container, 6...lead wire.

Claims (1)

[Claims for Utility Model Registration] (1) A float that holds a magnet, a sensor section that supports the float so that it can move up and down, and that incorporates a magnetoelectric conversion element that is activated by the up and down movement of the magnet, and a sensor section that supports the float so that it can move up and down. A liquid level detection device comprising a support member attached to a container, the support member comprising: a flange portion for attaching to the container; a sensor fixing portion fixing both the upper and lower ends of the sensor portion; and the flange portion and the sensor fixing portion. and a connecting part extending in the horizontal direction through which a lead wire for extracting an output signal from the sensor part to the outside of the container is inserted. It consists of an upper end fixing part extending horizontally, a leg part extending vertically downward from the connecting part, and a lower end fixing part extending parallel to the upper end fixing part from the lower end of the leg part. A liquid level detection device characterized in that an upper end and a lower end of the sensor section are fixed to the upper end fixing part and the lower end fixing part, respectively. (2) The liquid level detection device according to claim 1, wherein the leg portion of the sensor fixing portion is wide on the connecting portion side and gradually narrows toward the opposite side. (3) The liquid level detection device according to claim 1, wherein the leg portion of the sensor fixing portion has a substantially arcuate cross section.