JPH0412427Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a liquid level meter, and particularly to a liquid level meter for a deformable tank.

(Prior Art) A device in which the displacement of the liquid level is detected by a float and linked with a pointer is known (Utility Model Application No. 56-68124, etc.).

However, if the upper part of the tank to which the liquid level meter is attached is narrow, if you use a long arm that can reach the bottom when the liquid level is 0, the float or arm will be obstructed by the tank wall when the liquid level is full, and the liquid level will be lowered. This causes the problem that the amount of liquid cannot be displayed. Such tanks are often found in fuel tanks for motorcycles and the like. On the other hand, there are also known devices that combine a spiral member and a float to rotate the pointer. However, in this case, even if the spiral member is vertical, there is a drawback that smooth movement cannot be obtained when the spiral member is installed at an angle.

(Technical Problem) The problem of the present invention is to solve the above-mentioned problems and shortcomings, and even in tanks with deformed shapes and structures where the float cannot be simply moved vertically or circumferentially, To provide a liquid level meter that can accurately display changes in liquid level up to zero.

(Technical means) The problem is that the main body 1 has two or more shaft cylinders 3 ₁ , 3 ₂
... are rotatably supported on the same axis, and each shaft cylinder 3 ₁ , 3 ₂
... are attached with arms 4 ₁ , 4 ₂ ... of different lengths, and floats 5 ₁ , 5 ₂ ... that follow the displacement of the liquid level height within a range determined by the length of each arm 4 ₁ , 4 ₂ ... A pointer 7 for displaying the liquid level is provided on the first shaft cylinder 3 ₁ which is attached to each arm and operates within the range of the maximum liquid level height, and the first arm 4 ₁ has the shortest length among the two or more shaft cylinders. An engagement end 12 is formed on the first shaft cylinder 3 ₁ to which the first arm 4 ₁ is attached, and is formed with an engaging end 12 that protrudes in the radial direction and is engageable in the rotational direction. The engaging element 13 that can engage with the engaging end 12 is connected to the first
This is achieved by attaching the second arm 4 ₂ , which is the second longest after the arm 4 2 , to the second shaft cylinder 3 ₂ so as to sequentially transmit the decrease in the liquid level.

(Example) To explain with reference to the drawings, the main body 1 of the liquid meter is equipped with a display scale 8 on the upper part and has a structure for attaching a movable pointer. Reference numeral 9 designates a mounting piece for this purpose, in which a movable pointer, a float, etc. are pivotally supported using the support shaft 2 substantially parallel to the liquid level. Two (or more) shaft cylinders 3 ₁ and 3 ₂ are attached to the support shaft 2 so that they rotate lightly.
They are inserted in line in the axial direction, and each shaft cylinder 3 ₁ , 3 ₂
The floats 5 ₁ and 5 ₂ fixed to the tips of arms 4 ₁ and 4 ₂ of different lengths are moved up and down in accordance with the displacement of the liquid level, thereby rotating around the axis.

The first arm 4 ₁ is set short to accommodate changes in the liquid level near the upper limit of the deformable tank T, which does not have a sufficiently large area at the top.

The second arm 4 ₂ has a length necessary to detect the range that cannot be covered by the short arm 4 ₁ and the liquid level near the lower limit. If the second arm ₄₂ cannot cover the area, third, fourth, etc. arms are provided and combined with the float and the third, fourth, etc. shaft cylinders, respectively.

The engaging portion 6 is provided to sequentially transmit the rotation of the shaft cylinders 3 ₁ , 3 ₂ . . . to the pointer 7. In the illustrated case, the pointer 7 is provided integrally with the first barrel ₃₁ ,
Since the first shaft cylinder 3 ₁ is rotated by the first arm 4 ₁ following the vertical movement of the first float 5 ₁ , the lower limit of the first shaft cylinder 3 ₁ and the upper limit of the second shaft cylinder 3 ₂ All you have to do is contact us.

Therefore, an engaging protrusion 11 protruding in the radial direction in the shape of a fan-shaped cam is provided on the circumferential surface of the first shaft cylinder ₃₁ , and the engaging end 12 of the engaging projection 11 is connected to the second shaft cylinder. The first float 5 ₁ engages with the engaging element 13 protruding laterally from the 3 ₂ near the lower limit, and thereafter rotates integrally with the rotation of the second shaft cylinder 3 ₂ . It is set. The engaging protrusion 11 , its engaging end 12 , and the engaging element 13 constitute the engaging portion 6 .

When providing the third and fourth floats, the displacement of the floats can be transmitted by providing engaging portions in the same manner. Note that a structure may also be adopted in which an integral support shaft 2' is integrally provided at both ends of the first shaft cylinder ₃₁ , and the second shaft cylinder ₃₂ and the following are loosely fitted onto the support shaft (see Fig. 2). b).

In the figure, 14 is the main body cover, 15 is a transparent lens,
Seal members 16, 17, and 18 are interposed between the cover 14, the lens 15, the main body 1, and the tank T, respectively. Further, since the illustrated liquid meter is integrated into a unit, it can be attached by fitting it into the mounting port 19 of the tank and fastening it with screws.

(Function) In the above configuration, when the tank T is filled with liquid, the first float ₅₁ floats according to the height L of the liquid level, so that the pointer 7 reaches the display scale 8. The amount F is displayed (solid line in Figure 4), and when the liquid level falls, it moves along the scale 8 and displays the amount of liquid according to the displacement.

When the height of the liquid level falls to L', the short first arm ₄₁ cannot follow it, but the float ₅₂ of the long second arm ₄₂ becomes able to float, and the first shaft cylinder 3 ₁ , since the engaging end 12 of the cam 11 engages with the engaging element 13 of the second shaft cylinder ₃₂ , the position of the second float ₅₂ is transmitted to the pointer 7 via the engaging part 6, and the position of the second float 52 is transmitted from the middle to the pointer 7. Displays the displacement up to 0 liquid level.

(Effect) Therefore, according to the present invention, there are a plurality of floats 5 ₁ , 5 ₂ . . . whose coverage ranges differ depending on the amount of liquid,
The movements are the first and second arms 4 ₁ , 4 ₂ , respectively.
The information is transmitted to the first and second shaft cylinders 3 ₁ , 3 ₂ . Even in cases where one float cannot respond completely, the effect is that changes in liquid volume can be accurately displayed. In addition, since it is structurally simple and mechanically transmits the rotation of a plurality of shaft cylinders by means of an engaging means, the operation is smooth and the practical effect is remarkable.

[Brief explanation of the drawing]

The drawings show an embodiment of the liquid meter according to the present invention, in which FIG. 1 is an explanatory sectional view, FIGS. 2 a and b are sectional views of main parts, and FIGS. 3 a, b, and c are explanatory views of operation. FIG. 4 is a plan view, and FIG. 5 is a perspective view of the engaging portion. DESCRIPTION OF SYMBOLS 1...Main body, 2, 2'...Spin shaft, ₃₁ ...First shaft cylinder, ₃₂ ...Second shaft cylinder, ₄₁ ...First arm,...Second ₄₂ ... Arm, 5 ₁ ... First float, 5 ₂ ... Second float, 6 ... Engagement part, 7 ...
Guidelines.

Claims (1)

[Scope of utility model registration request] Two or more shaft cylinders 3 ₁ , 3 ₂ ... are rotatably supported on the main body 1 on the same axis, and arms 4 ₁ , 4 ₂ ... of different lengths are attached to each shaft cylinder 3 ₁ , 3 ₂ .... , each arm 4 ₁ ,
Attach floats 5 _{1 ,} 5 2 ... to each arm, which follow the displacement of the liquid level within a range determined by the length of 4 ₂ ...
A first shaft cylinder ₃₁ that operates in the range of maximum liquid level height is provided with a pointer 7 for displaying the liquid level, and the first arm ₄₁ having the shortest length among the two or more shaft cylinders is attached.
An engagement end 12 is formed in the shaft cylinder 3 ₁ that protrudes in the radial direction and is engageable in the rotational direction, and the engagement end 12 is located at a position before the lower limit of the rotation range of the first arm 4 ₁ .
2, the second arm 42, which is the second longest arm after the first arm, is attached to the second shaft cylinder _{32 .}
A liquid level meter characterized in that it is configured to sequentially transmit a decrease in liquid level by being attached to the liquid level meter.