CN111742198B - Liquid level detection device - Google Patents
Liquid level detection device Download PDFInfo
- Publication number
- CN111742198B CN111742198B CN201980014688.XA CN201980014688A CN111742198B CN 111742198 B CN111742198 B CN 111742198B CN 201980014688 A CN201980014688 A CN 201980014688A CN 111742198 B CN111742198 B CN 111742198B
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- CN
- China
- Prior art keywords
- arm
- holder
- loading
- liquid level
- offset
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 239000007788 liquid Substances 0.000 title claims abstract description 60
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 239000000446 fuel Substances 0.000 description 13
- 239000002828 fuel tank Substances 0.000 description 12
- 230000000630 rising effect Effects 0.000 description 10
- 229920005989 resin Polymers 0.000 description 8
- 239000011347 resin Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 229930040373 Paraformaldehyde Natural products 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/32—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements
Abstract
A liquid level detecting device which can be manufactured at low cost is provided. The liquid level detection device (10) comprises: a bracket (30), wherein the bracket (30) is fixed on the installed component (11); a holder (60), the holder (60) being rotatably provided on the bracket (30); an arm (12), the arm (12) being fixed to the holder (60). The retainer (60) comprises: a loading unit (72) for loading the arm (12) on the loading unit (72) and supporting the bottom surface of the arm (12); and a biasing portion (74), wherein the biasing portion (74) is in contact with the top surface of the arm (12) and biases the arm (12) toward the loading portion (72), and the loading portion (72) is provided so as to avoid a portion facing the biasing portion (74). The top surface of the arm (12) at the location where it is mounted on the mounting portion (72) is exposed outside the holder (60), and the location of the holder (60) facing the offset portion (74) forms an opening (75) formed in an opening shape.
Description
Technical Field
The present invention relates to a float-type liquid level detection device.
Background
In many devices such as vehicles using liquid fuel as a power source, a fuel gauge is mounted so that the remaining amount of liquid fuel can be understood. The fuel gauge has, for example, a liquid level detection device that detects a liquid level of the liquid fuel stored in the fuel tank. Such a fuel gauge indicates the residual amount of the liquid fuel based on the liquid level of the liquid fuel obtained from the liquid level detection device. As a liquid level detection device, a type is known in which a float floats on a liquid level, and the height of the liquid level is detected from the position of the float. As a conventional technique relating to such a float-type liquid level detection device, there is a technique disclosed in patent document 1.
The liquid surface detection device as described in patent document 1 includes: a bracket; a holder rotatably provided on the bracket; an arm fixed to the holder; a float fixed to the front end of the arm and floating on the liquid surface.
The holder includes a loading portion on which the arm is loaded, and a biasing portion (urging portion) that biases (urges) the arm toward the loading portion. The loading portion and the biasing portion are integrally formed in a substantially C-shape.
The arm is held by the loading portion and the biasing portion and is fixed to the holder. The arm is rotatably disposed with the holder.
Prior art literature
Patent literature
Patent document 1: JP-A2015-212716
Disclosure of Invention
Problems to be solved by the invention
Refer to fig. 7. Fig. 7 shows a cross-sectional view of the holder 160 shown in patent document 1 and 1 slide core P' as a mold member for molding the holder 160.
The holder 160 includes a fitting portion 161 and a body portion 170, the fitting portion 161 being fitted to the bracket, the body portion 170 being formed from the fitting portion 161 in a direction in which the arm extends.
The body portion 170 includes: a loading unit 172, the arm being loaded on the loading unit 172; and a biasing portion 174, wherein the biasing portion 174 is formed at a position facing the loading portion 172, and biases the arm toward the loading portion 172. The loading portion 172 and the biasing portion 174 are connected by a wall portion 173. The loading portion 172, the arm portion 173, and the offset portion 174 are formed continuously in a substantially C-shape when viewed from the side.
Such a holder 160 may be formed by: the resin is flowed into the mold, the resin is cured, and the cured resin in the mold (holder 160) is taken out. The mold includes not only a mold M 'movable in the front-rear direction but also a slide core P' movable in the left-right direction so that the front-rear loading portion 172 and the offset portion 174 having a substantially C-shape can be extracted from the mold.
Here, the more the number of slide cores P' is increased, the higher the price of the metal mold for molding the holder 160 is. The higher the price of the metal mold, the higher the price of the holder 160 thus formed and the liquid level detecting device including the holder 160.
The invention provides a liquid level detection device which can be manufactured at low cost.
Means for solving the problems
The invention of claim 1 provides a liquid level detection device comprising: a bracket fixed to the mounted member; a holder rotatably provided on the bracket; an arm fixed to the holder; a float fixed to the front end of the arm and floating on the liquid surface;
characterized in that the cage comprises: a loading part on which the arm is loaded and the bottom surface of which is supported; a biasing portion abutting on the top surface of the arm to bias the arm toward the loading portion,
the loading part is arranged in a way of avoiding the part facing the offset part;
the top surface of the part of the arm loaded on the loading part is exposed to the outside of the retainer;
the part of the retainer facing the offset part forms an opening part formed in an opening shape.
As described in claim 2, the offset portion is preferably formed at least 2 points so as to sandwich the loading portion with reference to the extending direction of the arm.
As described in claim 3, the loading portion is preferably formed at least 2 positions so as to sandwich the offset portion with reference to the extending direction of the arm.
ADVANTAGEOUS EFFECTS OF INVENTION
In the invention according to claim 1, the loading portion is provided so as to avoid a portion facing the biasing portion, and a top surface of a portion of the arm loaded on the loading portion is exposed to the outside of the holder. The part of the retainer facing the offset part forms an opening part formed in an opening shape. That is, the loading portion and the offset portion are visually observable when viewed from the top surface side and the bottom surface side of the holder, respectively. Thus, a slide core for forming the loading portion and the biasing portion is not required. This can stabilize the mold for molding the retainer. By using a low-priced metal mold, the price of the holder can be reduced, and as a result, the price of the liquid level detecting device can be reduced. That is, a liquid level detecting device that can be manufactured at low cost can be provided.
In the invention according to claim 2, the offset portion is formed at least 2 portions so as to sandwich the loading portion with respect to the extending direction of the arm. When the arm is assembled to the holder, one of the biasing portions formed at 2 positions is elastically deformed, and after the arm is mounted, the arm can be assembled while the other biasing portion is elastically deformed. That is, the offset portions may be divided into 2 portions, and assembled while being elastically deformed. The force required for elastically deforming the corresponding biasing portion may be smaller than in the case of forming 1 biasing portion to be elastically deformed. Thus, the arm can be easily assembled to the holder.
Further, by forming the biasing portions at 2 positions so as to sandwich the loading portion, the arm can be fixed more reliably.
In the invention according to claim 3, the loading portion is formed in at least 2 portions so as to sandwich the offset portion with respect to the extending direction of the arm. Thus, the area of the loading portion of the loading arm increases, and the arm is supported by the loading portion having the increased area. As a result, the arm can be stably fixed to the holder.
Drawings
Fig. 1 is a perspective view of a liquid level detection device according to embodiment 1 of the present invention;
FIG. 2 is a cross-sectional view taken along line 2-2 of FIG. 1;
FIG. 3 is an exploded view of the bracket and holder shown in FIG. 1;
fig. 4 is a view illustrating an effect of the retainer shown in fig. 3 in forming;
fig. 5 is a view illustrating an effect when assembling the arm on the holder shown in fig. 3;
fig. 6 is a sectional view of a retainer of embodiment 2 of the present invention;
fig. 7 is a cross-sectional view of a holder assembled to a conventional liquid level detection device.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. In the figure, fr represents the front, rr represents the rear, le represents the left, ri represents the right, up represents the upper, and Dn represents the lower, based on the state of the liquid level detection device mounted on the fuel tank as viewed from the front.
Example 1 ]
Reference is made to fig. 1. Fig. 1 shows a liquid level detection device 10 according to embodiment 1 of the present invention. The liquid level detection device 10 is mounted inside a fuel tank, not shown in the drawings, such as being mounted on a vehicle. The liquid level detection device 10 detects the level of the liquid fuel filled in the fuel tank, and outputs an electric signal corresponding to the level of the liquid fuel.
The liquid surface detection device 10 includes: a mounted member 11, the mounted member 11 being mounted on the fuel tank; a body unit 20, the body unit 20 being fixed to the mounted member 11; a holder unit 50, the holder unit 50 being rotatably provided on the body unit 20; an arm 12, the arm 12 being fixed to the holder unit 50; a float 13, the float 13 being fixed to the front end of the arm 12; and an electric wire 14, the electric wire 14 being electrically connected to the body unit 20.
The mounted member 11 includes: a plate member 11a, the plate member 11a being mounted on the fuel tank; guide portions 11a, 11b, the guide portions 11a, 11b rising from both ends of the plate member 11 a; guide groove portions 11c, the guide groove portions 11c, 11c being formed such that a part of the guide portions 11a, 11b is notched, the body unit 20 being fitted into the guide groove portions 11c, 11 c.
The mounted member 11 is formed of, for example, polyoxymethylene. Other synthetic resins may be used as the material of the mounted member 11.
The mounted member 11 may be mounted directly on the fuel tank or may be mounted on the fuel tank via another member. In addition, the mounted member 11 may be formed integrally with the fuel tank.
The body unit 20 is constituted by a bracket 30 and a terminal 21, the bracket 30 is fixed to the mounted member 11, the terminal 21 is fixed to the bracket 30, and the terminal 21 can be energized.
Reference is also made to fig. 2. The bracket 30 includes: a flat surface portion 31, the flat surface portion 31 being fixed to the mounted member 11, the flat surface portion 31 being formed on a flat surface; a rising portion 32, the rising portion 32 rising from the planar portion 31 toward the front (the drawing surface approaches one of the two sides); a receiving portion 33 provided on an upper portion of the rising portion 32, the receiving portion 33 receiving the terminal 21 and the electric wire 14 therein; an assembly portion 40, the assembly portion 40 is formed on a side wall of the standing portion 32, and a holder unit 50 is rotatably assembled to the assembly portion 40.
Reference is made to fig. 1 and 3. The planar portion 31 includes: a guided portion 31a, the guided portion 31a being guided by the guide portions 11a, 11 b; and a locking portion 31b, wherein the locking portion 31b is continuous with the guided portion 31a and is locked by the guide portion groove portions 11c, 11 c. In the flat portion 31, the engaging portion 31b is engaged with the guide portion groove portions 11c, and is fixed to the member 11 to be mounted.
Refer to fig. 3. The receiving portion 33 includes: a terminal fixing portion 33a provided at the middle of the receiving portion 33, fixing the terminal 21; a lower opening 33b, the lower opening 33b being opened below the terminal fixing portion 33a, the terminal 21 facing the lower opening 33b; an upper opening 33c, the upper opening 33c being opened above the terminal fixing portion 33a, and the electric wire 14 being pressed against the terminal 21.
The terminal fixing portion 33a is formed of synthetic resin. The terminal 21 is fixed to the terminal fixing portion 33a so that a part thereof is embedded in the resin.
The lower opening 33b is formed of a through hole having a substantially rectangular shape. The bottom ends of the terminals 21 are exposed inside the lower opening 33 b.
The upper opening 33c is formed of 2 through holes having a substantially rectangular shape. The tips of the terminals 21 are exposed in the upper opening 33 c. The sizes of the 2 through holes are the same.
Reference is also made to fig. 2. The assembly portion 40 includes: a protruding portion 41, the protruding portion 41 protruding laterally from a side wall of the rising portion 32; a substantially cylindrical fitted portion 42, the fitted portion 42 being provided at the tip of the protruding portion 41.
The protruding portion 41 connects the rising portion 32 and the fitted portion 42. The protruding portion 41 protrudes in a substantially triangular shape from the side wall of the rising portion 32. The protrusion 41 does not interfere with the rotating holder 60.
Refer to fig. 2. The fitted portion 42 includes: a top surface portion 42a, the top surface portion 42a having a substantially cylindrical shape and forming an inlet-side end surface with reference to the insertion direction of the arm 12; a bottom surface portion 42b, the bottom surface portion 42b forming an end surface on the outlet side with reference to the insertion direction of the arm 12; an outer peripheral portion 42c, the outer peripheral portion 42c connecting the top surface portion 42a and the bottom surface portion 42b to form an outer surface portion; a 1 st hole 42d, the 1 st hole 42d being formed at the center of the fitted portion 42, the arm 12 being inserted into the 1 st hole 42 d; a shaft portion 42e, the shaft portion 42e protruding from the bottom surface portion 42b along the arm 12, and a holder 60 rotatably provided on an outer periphery thereof.
The top surface portion 42a and the bottom surface portion 42b are held by the holder unit 50. The surfaces of the top surface portion 42a and the bottom surface portion 42b are smoothly formed, and the rotation of the holder unit 50 is smoothed.
The 1 st hole 42d has a diameter substantially equal to the diameter (outer shape) of the arm 12, and the arm 12 is inserted into the 1 st hole 42 d. The holder unit 50 rotates together with the arm 12 about the fitted portion 42.
Refer to fig. 3. The terminal 21 is composed of an embedded portion 21a, a terminal portion 21b, and a pressing portion 21c, the embedded portion 21a is embedded in the terminal fixing portion 33a, the terminal portion 21b is disposed below the embedded portion 21a and faces the holder unit 50, and the pressing portion 21c is disposed above the embedded portion 21a to press the electric wire 14.
The embedded portion 21a is embedded in the terminal fixing portion 33a, whereby the terminal 21 is fixed to the bracket 30.
Refer to fig. 2. The holder unit 50 includes a holder 60 and a circuit substrate 51, the holder 60 being rotatably provided on the holder 30, the circuit substrate 51 being fixed to the holder 60 so as to be rotatable together with the holder 60.
The holder 60 includes a fitting portion 61 and a body portion 70, the fitting portion 61 is fitted to the fitted portion 42, and the body portion 70 is formed along the arm 12 extending from the fitting portion 61 to the left and right.
The fitting portion 61 includes: an upper portion 61a, the upper portion 61a being proximate to the top surface portion 42a; a 2 nd hole portion 61b, the 2 nd hole portion 61b being provided at the upper portion 61a, the arm 12 being inserted into the 2 nd hole portion 61 b; an intermediate portion 61c, the intermediate portion 61c extending from the upper portion 61a to the mounted member 11 side; a lower portion 61d, the lower portion 61d being continuous with the intermediate portion 61c and facing the upper portion 61 a; a 3 rd hole portion 61e, the 3 rd hole portion 61e being opened in the lower portion 61 d; an intermediate portion groove portion 61f (see fig. 1), and a part of the side wall of the intermediate portion 61c is formed in a groove shape in the intermediate portion groove portion 61 f.
The fitting portion 61 is fitted by sandwiching the upper portion 61a and the lower portion 61d between the fitted portions 42. The holder 60 is rotatably attached to the bracket 30 by the fitting portion 61.
In addition, if a structure is formed in which the holder 60 can be rotatably attached to the bracket 30, it is not limited to a structure sandwiched by the upper portion 61a and the lower portion 61 d. For example, the fitting portion 61 may be constituted only by the upper portion 61a and the 2 nd hole portion 61 b. In this case, the bracket 30 and the holder 60 are rotatably fixed by pressing nuts or the like.
Reference is made to fig. 1. The intermediate portion groove portion 61f is a mark provided on the intermediate portion 61c, and has a substantially triangular shape. The intermediate portion groove 61f is a symbol for cutting the rear side of the upper portion 61a when the fitting portion 61 is constituted only by the upper portion 61a and the 2 nd hole portion 61 b. The holder 60 behind the cut-off upper portion 61a is rotatably attached by being fixed together with the bracket 30 by a pressing nut or the like. The shape of the intermediate portion groove portion 61f may be, for example, a substantially quadrangular shape, in addition to a triangular shape.
Refer to fig. 2. The 2 nd hole portion 61b and the 3 rd hole portion 61e are formed on the same axis together with the 1 st hole portion 42 d.
Reference is made to fig. 1 and 2. The body portion 70 includes: a substantially rectangular base portion 71, the base portion 71 being formed laterally of the upper portion 61 a; a loading unit 72, the loading unit 72 being provided at the center of the base unit 71, and the arm 12 being loaded on the loading unit 72; a wall portion 73, the wall portion 73 protruding forward from the base portion 71; offset portions 74, the offset portions 74, 74 protruding from the wall portion 73 to the arm 12 side; an opening 75, the opening 75 being formed in the base portion 71; a detachment prevention portion 76, the detachment prevention portion 76 extending from the base portion 71 toward the arm 12.
Refer to fig. 3. The base portion 71 includes: a receiving portion 71a, the receiving portion 71a receiving the circuit substrate 51; a protruding portion 71b, the protruding portion 71b protruding rearward from the base portion 71. The base portion 71 has a substantially rectangular shape.
The protrusion 71b contacts the rising portion 32 (see fig. 1), thereby restricting the rotation of the holder 60. That is, the rotatable region of the holder 60 is restricted by the rising portion 32.
Refer to fig. 2. The loading portion 72 is provided so as to avoid the portions corresponding to the biasing portions 74, and supports the bottom surface of the loaded arm 12. The loading portion 72 is formed to have a concave surface in contact with the arm 12.
With reference to fig. 1. In the wall 73, the surface on the arm 12 side is formed flat. The wall 73 is provided near the arm 12, and connects the loading portion 72 and the offset portions 74, 74.
Refer to fig. 2. The biasing portions 74, 74 abut against the top surface of the arm 12, and bias the arm 12 toward the loading portion 72. The offset portions 74, 74 are provided so as to avoid a portion facing the loading portion 72. That is, the top surface of the arm 12 at the position to be mounted on the mounting portion 72 is exposed to the outside of the holder 60.
The opening 75 is formed so that a portion facing the offset portions 74, 74 is opened. The plurality of openings 75 are formed corresponding to the offset portions 74, 74.
Reference is made to fig. 1. The disengagement preventing portion 76 approaches the arm 12, preventing the arm 12 from disengaging from the loading portion 72 and the biasing portions 74, 74.
Refer to fig. 2. The circuit board 51 contacts the terminals 21 fixed to the holder 30, and slides relative to the terminals 21 by rotation of the holder 60.
The arm 12 is composed of a rotation shaft portion 12a and a swinging portion 12b, the rotation shaft portion 12a is inserted into the 1 st hole portion 42d, the 2 nd hole portion 61b, and the 3 rd hole portion 61e, and the swinging portion 12b extends in the vertical direction from one end portion of the rotation shaft portion 12 a.
In the swing portion 12b, a float 13 floating on the liquid surface is fixed to the tip thereof. The swing portion 12b may have a shape extending straight toward the float 13 or may have a shape extending in a meandering manner toward the float 13.
Reference is made to fig. 1. The electric wire 14 is pressed by the portion of the terminal 21 exposed through the upward opening 33 c.
The function of the present invention will be described below.
Refer to fig. 2. In the liquid level detection device 10, a holder 60 made of resin is rotatably provided on the body unit 20. The holder 60 includes a loading portion 72 and offset portions 74, 74 provided so as to avoid mutually facing portions.
The offset portions 74, 74 are formed at least 2 positions so as to sandwich the loading portion 72 with respect to the extending direction of the arm 12.
First, an operation of molding the holder 60 will be described.
Refer to fig. 4. Fig. 4 illustrates a method of molding the retainer 60 of example 1. The retainer 60 is formed by: the resin is flowed into the mold, the resin is cured, and the cured resin in the mold (the holder 60) is taken out. The holder 60 inside the mold can be taken out by separating the 2 molds M constituting the mold.
Here, the loading portion 72 and the offset portions 74, 74 are visually observable when viewed from the top surface side and the bottom surface side, respectively. Thus, the visually recognizable loading portion 72 and the biasing portions 74, 74 do not interfere with the forward and backward movement of the mold M when the holder 60 is taken out from the inside of the mold. That is, the slide cores of the opposing loading portion 72 and the biasing portions 74, 74 in the metal mold are not required.
The operation of the arm when mounted on the holder 60 will be described below.
Refer to fig. 5. Fig. 5 shows an illustration of the arm 12 mounted on the holder 60.
Refer to fig. 2 and 5 (a). For attachment of the arm 12, first, the rotation shaft portion 12a of the arm 12 is inserted into the 1 st to 3 rd hole portions 42d, 61b, 61e, and the arm 12 is rotated toward the loading portion 72 and the biasing portions 74, 74 about the rotation axis of the arm 12. The offset portions 74, 74 are separated, and they are formed at 2 positions.
Refer to fig. 5 (b) to 5 (c). If the rotated arm 12 reaches 1 part of the separated biasing portions 74, the arm 12 is sandwiched between the 1-part biasing portion 74 and the loading portion 72, and the 1-part biasing portion 74 is assembled while being elastically deformed. If the assembly of the offset portion 74 with respect to 1 part is completed, the arm 12 is rotated toward the offset portion 74 of 2 parts. If the arm 12 reaches the 2-part offset portion 74, the arm 12 is assembled while elastically deforming the 2-part offset portion 74. In the middle, it is also necessary to bias the separation preventing portion 76 downward. Thereby, the arm 12 is mounted on the holder 60. Since the biasing portions 74, 74 are divided into 2, the force when assembled to the corresponding biasing portions 74, 74 (1 part and 2 parts) is smaller than when the 1 biasing portion 74 is formed to be elastically deformed.
Effects of the invention will be described below.
Reference is made to fig. 2 and 3. The loading portion 72 is provided so as to avoid the portions facing the biasing portions 74, and the top surface of the portion of the arm 12 loaded on the loading portion 72 is exposed to the outside of the holder 60. The portions of the holder 60 facing the offset portions 74, 74 form an opening 75 formed in an opening shape. That is, the loading portion 72 and the offset portions 74, 74 are visually observable when viewed from the top surface side and the bottom surface side of the holder 60, respectively. Thus, a slide core for forming the loading portion 72 and the biasing portions 74, 74 is not required. Thus, the mold for molding the holder 60 can be stabilized. By using a low-cost mold, the cost of the mold 60 can be reduced, and as a result, the cost of the liquid level detection device 10 can be reduced. That is, the liquid level detection device 10 can be manufactured at low cost.
The offset portions 74, 74 are formed at least 2 positions so as to sandwich the loading portion 72 with respect to the extending direction of the arm 12. When the arm 12 is assembled to the holder 60, one of the biasing portions 74, 74 formed at 2 positions is elastically deformed, and the arm 12 is assembled, and then the other biasing portion 74 is elastically deformed, and the arm 12 is assembled. That is, the biasing portions 74 and 74 may be divided into 2 portions, and assembled while being elastically deformed. The force required for elastically deforming the respective biasing portions 74, 74 may be smaller than in the case where 1 biasing portion 74 is formed and the 1 biasing portion 74 is elastically deformed. Thus, the arm 12 can be easily assembled to the holder 60. Further, by forming the biasing portions 74, 74 in 2 places so as to sandwich the loading portion 72, the arm 12 can be fixed more reliably.
Example 2 ]
Embodiment 2 of the present invention will be described below with reference to the accompanying drawings.
Refer to fig. 6. Fig. 6 is a cross-sectional view of a holder 60A of the liquid level detection device 10A of example 2, which corresponds to fig. 4. For the parts common to embodiment 1, the reference numerals are used, and a specific description is omitted.
In the liquid surface detection device 10A of example 2, the loading portions 72A and 72A are formed at least 2 positions so as to sandwich the offset portion 74A with respect to the extending direction (the left-right direction in the drawing) of the arm 12 (see fig. 1). The loading portions 72A, 72A and the offset portion 74A are respectively visually observable when viewed from the top surface side and the bottom surface side of the holder 60A.
In the liquid surface detection device 10A of example 2 configured as described above, the effects specified by the present invention are obtained.
In the liquid surface detection device 10A of example 2, the area of contact between the arm 12 and the loading portion 72A is larger than that of the liquid surface detection device 10 (see fig. 4) of example 1. The arm 12 is supported by a large contact area 72A. The arm 12 can be fixed more reliably.
The liquid level detection devices 10 and 10A according to the present invention will be described by way of example for detecting the liquid level of the liquid fuel in the fuel tank mounted on a vehicle or the like. However, the detection target is not limited to the liquid fuel in the fuel tank mounted on a vehicle or the like, and may be of a type that detects the liquid level of the liquid. That is, the present invention is applicable not only to vehicles such as vehicles but also to construction machines, factory facilities, and the like.
That is, the present invention is not limited to the embodiments as long as the actions and effects of the present invention are achieved.
Industrial applicability
The liquid level detection device of the present invention is preferably applied to a case of detecting the liquid level of liquid fuel in a fuel tank mounted on a vehicle.
Description of the reference numerals:
reference numerals 10, 10A denote liquid level detection devices;
reference numeral 12 denotes an arm;
reference numeral 13 denotes a float;
reference numeral 30 denotes a bracket;
reference numerals 60, 60A denote holders;
reference numerals 70, 70A denote loading portions;
reference numerals 74, 74A denote offset portions;
reference numeral 75 denotes an opening portion.
Claims (2)
1. A liquid level detection apparatus, the liquid level detection apparatus comprising:
a bracket fixed to the mounted member; a holder rotatably provided on the bracket; an arm fixed to the holder; a float fixed on the front end of the arm and floating on the liquid surface,
the retainer is characterized by comprising: a loading unit on which the arm is loaded and which supports a bottom surface of the arm; a biasing portion which abuts against a top surface of the arm to bias the arm toward the loading portion,
the loading part is arranged in a way of avoiding the part facing the offset part,
the top surface of the part of the arm mounted on the loading part is exposed to the outside of the retainer,
the part of the retainer facing the offset part forms an opening part formed in an opening shape,
the offset portion is formed at least 2 parts in a manner of clamping the loading portion by taking the extending direction of the arm as a reference,
the width of the offset portion along the extending direction of the arm is equal to the width of the opening along the extending direction of the arm.
2. A liquid level detection apparatus, the liquid level detection apparatus comprising:
a bracket fixed to the mounted member; a holder rotatably provided on the bracket; an arm fixed to the holder; a float fixed on the front end of the arm and floating on the liquid surface,
the retainer is characterized by comprising: a loading unit on which the arm is loaded and which supports a bottom surface of the arm; a biasing portion which abuts against a top surface of the arm to bias the arm toward the loading portion,
the loading part is arranged in a way of avoiding the part facing the offset part,
the top surface of the part of the arm mounted on the loading part is exposed to the outside of the retainer,
the part of the retainer facing the offset part forms an opening part formed in an opening shape,
the loading part is formed at least 2 parts in a mode of clamping the offset part by taking the extending direction of the arm as a reference,
the width of the offset portion along the extending direction of the arm is equal to the width of the opening along the extending direction of the arm.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018029376 | 2018-02-22 | ||
| JP2018-029376 | 2018-02-22 | ||
| PCT/JP2019/005482 WO2019163653A1 (en) | 2018-02-22 | 2019-02-15 | Liquid level detecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111742198A CN111742198A (en) | 2020-10-02 |
| CN111742198B true CN111742198B (en) | 2023-11-17 |
Family
ID=67687533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980014688.XA Active CN111742198B (en) | 2018-02-22 | 2019-02-15 | Liquid level detection device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7223293B2 (en) |
| KR (1) | KR20200126363A (en) |
| CN (1) | CN111742198B (en) |
| WO (1) | WO2019163653A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7157114B2 (en) * | 2020-10-12 | 2022-10-19 | 矢崎総業株式会社 | Liquid level detector |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1338041A (en) * | 1999-11-30 | 2002-02-27 | 日本精机株式会社 | Liquid level detector |
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| JP5995118B2 (en) | 2015-08-28 | 2016-09-21 | 日本精機株式会社 | Liquid level detector |
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- 2019-02-15 CN CN201980014688.XA patent/CN111742198B/en active Active
- 2019-02-15 WO PCT/JP2019/005482 patent/WO2019163653A1/en active Application Filing
- 2019-02-15 KR KR1020207022265A patent/KR20200126363A/en not_active Application Discontinuation
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| CN2879139Y (en) * | 2006-04-09 | 2007-03-14 | 王福玉 | Rocker type digital oil meter |
| JP2008039613A (en) * | 2006-08-07 | 2008-02-21 | Denso Corp | Liquid level detecting device |
| CN101981419A (en) * | 2008-03-31 | 2011-02-23 | 日本精机株式会社 | Liquid level detecting device |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN111742198A (en) | 2020-10-02 |
| JP7223293B2 (en) | 2023-02-16 |
| KR20200126363A (en) | 2020-11-06 |
| WO2019163653A1 (en) | 2019-08-29 |
| JPWO2019163653A1 (en) | 2021-02-04 |
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