CN111742198A - Liquid level detection device - Google Patents
Liquid level detection device Download PDFInfo
- Publication number
- CN111742198A CN111742198A CN201980014688.XA CN201980014688A CN111742198A CN 111742198 A CN111742198 A CN 111742198A CN 201980014688 A CN201980014688 A CN 201980014688A CN 111742198 A CN111742198 A CN 111742198A
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- CN
- China
- Prior art keywords
- arm
- holder
- liquid level
- loading
- 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.)
- Granted
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 239000000446 fuel Substances 0.000 description 12
- 239000002828 fuel tank Substances 0.000 description 12
- 230000000630 rising effect Effects 0.000 description 9
- 229920005989 resin Polymers 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000002265 prevention Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 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
- 238000013459 approach Methods 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
- 239000002184 metal Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- -1 polyoxymethylene Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
Images
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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Level Indicators Using A Float (AREA)
Abstract
A liquid level detection device which can be manufactured at low cost is provided. A liquid level detection device (10) is provided with: a bracket (30), wherein the bracket (30) is fixed on the mounted component (11); a holder (60), the holder (60) being rotatably provided on the bracket (30); an arm (12), wherein the arm (12) is fixed on the retainer (60). The cage (60) comprises: a loading unit (72) on which the arm (12) is loaded and which supports the bottom surface of the arm (12); and an offset part (74), wherein the offset part (74) is abutted with the top surface of the arm (12) to bias the arm (12) towards the loading part (72), and the loading part (72) is arranged in a manner of avoiding the position facing the offset part (74). The top surface of the part of the arm (12) mounted on the mounting part (72) is exposed outside the holder (60), and the part of the holder (60) facing the offset part (74) forms an opening part (75) formed in an opening shape.
Description
Technical Field
The present invention relates to a float-type liquid level detection device.
Background
In many apparatuses 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 known. The fuel gauge has, for example, a liquid level detection device that detects a liquid level of liquid fuel stored inside the fuel tank. Such a fuel gauge indicates the remaining amount of liquid fuel based on the liquid level height of the liquid fuel obtained from the liquid level detection means. As a liquid level detecting device, there is known a type in which a float floats on a liquid level and a height of the liquid level is detected from a 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.
A liquid level detection device such as that shown in patent document 1 includes: a support; a holder rotatably disposed on the bracket; an arm fixed to the holder; and a float fixed to the front end of the arm and floating on the liquid surface.
The holder includes a mounting portion on which the arm is mounted, and a biasing portion (urging portion) that biases (urges) the arm toward the mounting 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 fixed to the holder. The arm is rotatably provided together with the holder.
Documents of the prior art
Patent document
Patent document 1: JP 2015-212716A
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 holder, the body portion 170 being formed in a direction in which the arm extends from the fitting portion 161.
The body part 170 includes: a loading unit 172 for loading an arm on the loading unit 172; and a biasing portion 174, the biasing portion 174 being formed at a position facing the mounting portion 172, and biasing the arm toward the mounting portion 172. The loading portion 172 and the offset portion 174 are connected by a wall portion 173. The mounting portion 172, the arm portion 173, and the offset portion 174 are continuously formed in a substantially C-shape when viewed from the side.
Such a cage 160 may be formed by: the resin is poured into the mold, cured, and the cured resin (holder 160) in the mold is taken out. The mold employs 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 biasing portion 174 having a substantially C-shape can be extracted from the mold.
Here, the more the number of the slide cores P' increases, the higher the price of the metal mold for molding the cage 160. The higher the price of the mold, the higher the price of the retainer 160 thus formed and the liquid level detection device including the retainer 160.
The invention provides a liquid level detection device which can be manufactured at low cost.
Means for solving the problems
The invention described in claim 1 provides a liquid level detection device including: a bracket fixed to the member to be mounted; a holder rotatably disposed 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 holder comprises: a loading part on which an arm is loaded and which supports the bottom surface of the arm; a biasing portion which is abutted against the top surface of the arm to bias the arm toward the loading portion,
the loading part is arranged in a manner 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 holder has an opening formed in an open shape at a portion facing the offset portion.
Preferably, as defined in claim 2, the biasing portion is formed at least 2 positions so as to hold the loading portion with reference to the extending direction of the arm.
Preferably, as defined in claim 3, the loading portion is formed at least 2 positions so as to hold the offset portion with reference to the extending direction of the arm.
ADVANTAGEOUS EFFECTS OF INVENTION
In the invention described in claim 1, the mounting portion is provided so as to avoid a portion facing the offset portion, and a top surface of a portion of the arm mounted on the mounting portion is exposed to the outside of the holder. The holder has an opening formed in an open shape at a portion facing the offset portion. That is, the mounting portion and the offset portion are visible when viewed from the top surface side and the bottom surface side of the retainer, respectively. Thus, a slide core for forming the loading portion and the biasing portion is unnecessary. This stabilizes the mold used for molding the retainer. By using a low-cost mold, the cost of the holder can be reduced, and as a result, the cost of the liquid level detection device can be reduced. That is, a liquid level detection device that can be manufactured at low cost can be provided.
In the invention according to claim 2, the biasing portion is formed at least at 2 positions so as to sandwich the loading portion with reference to the extending direction of the arm. When the arm is assembled to the holder, one of the 2 biasing portions is elastically deformed, and after the arm is attached, the other biasing portion is elastically deformed and the arm can be assembled. That is, the offset portions may be divided into 2 pieces, and assembled while being elastically deformed, respectively. The force required to elastically deform the corresponding biasing portion may be smaller than in the case where 1 biasing portion is formed to elastically deform the biasing portion. This makes it possible to easily assemble the arm to the holder.
Further, by forming the offset portions at 2 locations so as to sandwich the loading portion, the arm can be fixed more reliably.
In the invention according to claim 3, the mounting portion is formed at least 2 positions so as to sandwich the offset portion with reference to the extending direction of the arm. This increases the area of the loading portion of the loading arm, and the arm is supported by the loading portion having an 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 cage shown in FIG. 1;
FIG. 4 is a view for explaining the operation of the cage shown in FIG. 3 when it is formed;
fig. 5 is a view illustrating an operation when the arm is assembled to the holder shown in fig. 3;
fig. 6 is a sectional view of a cage of embodiment 2 of the invention;
fig. 7 is a sectional view of a holder incorporated in a conventional liquid level detection device.
Detailed Description
Embodiments of the present invention will be described below with reference to the 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 attached to the fuel tank as viewed from the front.
< example 1>
Refer 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, mounted on a vehicle, for example. The liquid level detection device 10 detects the height of the liquid level of the liquid fuel filled in the fuel tank, and outputs an electric signal corresponding to the height of the liquid level.
The liquid level 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 attached to the fuel tank; guide portions 11a, 11b, the guide portions 11a, 11b rising from both ends of the plate member 11 a; guide grooves 11c, the guide grooves 11c, 11c being formed such that a part of the guides 11a, 11b is cut out, and the main body unit 20 being fitted into the guide grooves 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 member to be mounted 11 may be directly mounted on the fuel tank or may be mounted on the fuel tank via another member. In addition, the mounted member 11 may also be formed integrally with the fuel tank.
The body unit 20 is composed of a bracket 30 and a terminal 21, the bracket 30 is fixed to the member 11 to be mounted, the terminal 21 is fixed to the bracket 30, and the terminal 21 is electrically connected.
Reference is also made to fig. 2. The holder 30 includes: a flat surface portion 31, the flat surface portion 31 being fixed to the member 11 to be mounted, the flat surface portion 31 being formed on a flat surface; a rising portion 32 that rises from the planar portion 31 toward the front (the side closer to the user in the figure); a receiving portion 33, the receiving portion 33 being provided on an upper portion of the rising portion 32, the receiving portion 33 receiving therein the terminal 21 and the electric wire 14; the assembling portion 40 is formed on a side wall of the rising portion 32, and the holder unit 50 is rotatably assembled to the assembling portion 40.
Refer 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 continuously connected to the guided portion 31a and is locked by the guide groove portions 11c and 11 c. In the flat portion 31, the engaging portion 31b is engaged with the guide groove portions 11c and fixed to the member 11.
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 opened below the terminal fixing portion 33a, the terminal 21 facing the lower opening 33 b; and an upper opening 33c opened above the terminal fixing portion 33a, for bringing the wire 14 into pressure contact with 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 by a through hole having a substantially rectangular shape. The bottom end of the terminal 21 is exposed inside the lower opening 33 b.
The upper opening 33c is formed by 2 through holes having a substantially rectangular shape. The tip of the terminal 21 is exposed inside the upper opening 33 c. The 2 through holes are the same size.
Reference is also made to fig. 2. The assembly section 40 includes: a protruding portion 41, the protruding portion 41 protruding from a side wall of the rising portion 32 toward a side; a substantially cylindrical fitting-receiving portion 42, and the fitting-receiving portion 42 is 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 from the side wall of the rising portion 32 in a substantially triangular shape. The protruding portion 41 does not interfere with the rotating holder 60.
Refer to fig. 2. The fitted portion 42 includes: a top surface portion 42a having a substantially cylindrical shape, the top surface portion 42a constituting 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 constituting an end surface on an outlet side with reference to an insertion direction of the arm 12; an outer peripheral portion 42c which connects the top surface portion 42a and the bottom surface portion 42b to constitute an outer surface portion; a 1 st hole 42d opened at the center of the fitted portion 42, the 1 st hole 42d being inserted with the arm 12; and 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 formed smoothly, and the rotation of the holder unit 50 is made smooth.
The diameter of the 1 st hole 42d is a size of a through hole 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 with the fitted portion 42 as an axis.
Refer to fig. 3. The terminal 21 includes 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 and presses the electric wire 14.
The embedded portion 21a is embedded in the terminal fixing portion 33a, whereby the terminal 21 is fixed to the holder 30.
Refer to fig. 2. The holder unit 50 includes a holder 60 and a circuit substrate 51, the holder 60 is rotatably provided on the carriage 30, and the circuit substrate 51 is fixed to the holder 60 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 close to the top surface portion 42 a; a 2 nd hole 61b opened in the upper portion 61a, and the arm 12 inserted into the 2 nd hole 61 b; an intermediate portion 61c extending from the upper portion 61a to the mounted member 11 side; a lower portion 61d continuing from the intermediate portion 61c and facing the upper portion 61 a; a 3 rd hole 61e, the 3 rd hole 61e opening on the lower portion 61 d; the intermediate groove 61f (see fig. 1) has a groove-like shape in a part of the side wall of the intermediate portion 61c of the intermediate groove 61 f.
The fitting portion 61 is fitted by sandwiching the upper portion 61a and the lower portion 61d between the fitting portions 42. The holder 60 is rotatably attached to the holder 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 the 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 61 b. In this case, the holder 30 and the retainer 60 are rotatably fixed by a pressing nut or the like.
Refer to fig. 1. The intermediate groove portion 61f is a mark provided in the intermediate portion 61c and has a substantially triangular shape. The intermediate groove portion 61f is a mark cut at the rear of the upper portion 61a when the fitting portion 61 is configured by only the upper portion 61a and the 2 nd hole portion 61 b. The holder 60 behind the cut upper portion 61a is fixed to the bracket 30 by a press nut or the like, and is rotatably attached. The shape of the intermediate groove portion 61f may be, for example, substantially a quadrangle, 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.
Refer to fig. 1 and 2. The body portion 70 includes: a substantially rectangular base portion 71, the base portion 71 being formed on a side of the upper portion 61 a; a loading section 72, the loading section 72 being provided at the center of the base section 71, the arm 12 being loaded on the loading section 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 opened in the base portion 71; and 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 that receives the circuit substrate 51; and a projection 71b, the projection 71b projecting rearward from the base 71. The base portion 71 has a substantially rectangular shape.
The rotation of the holder 60 is regulated by the contact of the projection 71b with the rising portion 32 (see fig. 1). That is, the holder 60 restricts the rotatable region by the rising portion 32.
Refer to fig. 2. The loading portion 72 is provided so as to avoid the portions corresponding to the offset portions 74, and supports the bottom surface of the loaded arm 12. The loading portion 72 is formed in a concave shape so as to abut against the arm 12.
Reference is also made to fig. 1. In the wall portion 73, the surface on the arm 12 side is formed flat. Wall 73 is provided near arm 12 and connects mounting portion 72 to 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 the portions facing the mounting portion 72. That is, the top surface of the arm 12 at the position where the arm is mounted on the mounting portion 72 is exposed to the outside of the holder 60.
The opening 75 is formed so that the portion facing the offset portions 74, 74 is open. A plurality of openings 75 are formed corresponding to the offset portions 74, 74.
Refer to fig. 1. The detachment prevention portion 76 approaches the arm 12 and prevents the arm 12 from being detached from the loading portion 72 and the offset 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 a shape extending meandering toward the float 13.
Refer to fig. 1. The electric wire 14 is pressed by the portion of the terminal 21 exposed to the upper opening 33 c.
The operation of the present invention will be explained below.
Refer to fig. 2. In the liquid level detection device 10, the holder 60 made of resin is rotatably provided on the main 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 when the retainer 60 is molded will be described.
Refer to fig. 4. Fig. 4 shows a method for molding the retainer 60 of example 1. The retainer 60 is formed by: the resin is poured into the mold, cured, and the cured resin (holder 60) in the mold is removed. The retainer 60 in the mold can be removed by separating the 2 molds M constituting the mold.
Here, the loading portion 72 and the offset portions 74, 74 are respectively visible when viewed from the top surface side and the bottom surface side. Thus, the loading portion 72 and the offset portions 74 and 74, which are visually recognizable, do not hinder the forward and backward movement of the mold M when the holder 60 is taken out from the inside of the mold. That is, a slide core of the relative loading portion 72 and the offset portions 74, 74 in the mold is not necessary.
The operation of the arm when mounted on the holder 60 will be described below.
Refer to fig. 5. Fig. 5 shows an explanation of the case where the arm 12 is mounted on the holder 60.
Refer to fig. 2 and 5 (a). To attach the arm 12, first, the rotation shaft 12a of the arm 12 is inserted into the 1 st to 3 rd holes 42d, 61b, and 61e, and the arm 12 is rotated toward the mounting portion 72 and the offset portions 74 and 74 around the rotation shaft of the arm 12. The offset parts 74 and 74 were separated and formed at 2 positions.
Refer to fig. 5 (b) to 5 (c). When the rotated arm 12 reaches 1 position of the separated offset portions 74, the arm 12 is sandwiched between the offset portion 74 and the loading portion 72 at 1 position, and the offset portions 74 at 1 position are assembled while being elastically deformed. If assembly of the offset portions 74 for 1 location is completed, the arm 12 is rotated toward the offset portions 74 for 2 locations. If the arm 12 reaches the 2-position biasing portions 74, the arm 12 is assembled while elastically deforming the 2-position biasing portions 74. In the middle, the separation preventing portion 76 must be biased downward. Thereby, the arm 12 is mounted on the holder 60. Since the offset portions 74, 74 are divided into 2, the force when assembled to the respective offset portions 74, 74(1 portion and 2 portions) is smaller than when forming 1 offset portion 74 and elastically deforming it.
The effects of the invention will be explained below.
Refer to fig. 2 and 3. The mounting 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 mounted on the mounting portion 72 is exposed to the outside of the holder 60. The portions of the holder 60 facing the offset portions 74, 74 constitute an opening 75 formed in an open shape. That is, the mounting portion 72 and the offset portions 74, 74 are visible 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 necessary. This stabilizes the mold used to form the retainer 60. 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 mounting 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 locations is elastically deformed, and after the arm 12 is assembled, the other biasing portion 74 is elastically deformed, and the arm 12 is assembled. That is, the offset portions 74 and 74 may be divided into 2 pieces, and assembled while being elastically deformed. As compared with the case where 1 offset portion 74 is formed and the 1 offset portion 74 is elastically deformed, the force required for elastically deforming the respective offset portions 74, 74 may be small. This makes it possible to easily assemble the arm 12 to the holder 60. Further, since the biasing portions 74 and 74 are formed at 2 positions so as to sandwich the loading portion 72, the arm 12 can be fixed more reliably.
< example 2>
Next, embodiment 2 of the present invention will be explained with reference to the drawings.
Refer to fig. 6. Fig. 6 is a cross-sectional view of the holder 60A of the liquid level detection device 10A according to example 2, which corresponds to fig. 4. The same portions as those in embodiment 1 are denoted by the same reference numerals, and detailed description thereof is omitted.
In the liquid level 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 reference to the extending direction (the left-right direction in the drawing) of the arm 12 (see fig. 1). The mounting portions 72A, 72A and the offset portion 74A are visible when viewed from the top surface side and the bottom surface side of the holder 60A, respectively.
The liquid level detection device 10A of example 2 configured in this manner also achieves the effects specified by the present invention.
In the liquid level detection device 10A according to example 2, the area of the arm 12 in contact with the loading portion 72A is larger than that of the liquid level detection device 10 (see fig. 4) according to example 1. The arm 12 is supported by a large contactable area 72A. The arm 12 can be fixed more reliably.
In addition, in order to detect the liquid level of the liquid fuel in the fuel tank mounted on the vehicle or the like, the case where the liquid level detection device 10 or 10A of the present invention is used has been described as an example. However, the detection target is not limited to the liquid fuel inside the fuel tank mounted on a vehicle or the like, and may be a type that detects the liquid level height of the liquid. That is, the present invention is applicable not only to vehicles such as vehicles but also to construction machines, plant facilities, and the like.
That is, the present invention is not limited to the embodiments as long as the action and effect of the present invention are achieved.
Industrial applicability of the invention
The liquid level detection device of the present invention is preferably applied to a case where the liquid level of the liquid fuel in the fuel tank mounted on the vehicle is detected.
Description of reference numerals:
Claims (3)
1. A liquid level detection device, comprising:
a bracket fixed to the member to be mounted; a holder rotatably provided on the holder; 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, above-mentioned holder includes: 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 manner of avoiding the position facing the offset part,
the top surface of the arm at the position on the loading part is exposed to the outside of the retainer,
the holder has an opening formed in an open shape at a portion facing the offset portion.
2. The liquid level detecting device according to claim 1, wherein the offset portion is formed at least 2 positions so as to sandwich the loading portion with reference to a direction in which the arm extends.
3. The liquid level detecting device according to claim 1, wherein the loading portion is formed in at least 2 places so as to sandwich the offset portion with reference to a direction in which the arm extends.
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 true CN111742198A (en) | 2020-10-02 |
| CN111742198B CN111742198B (en) | 2023-11-17 |
Family
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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 |
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| JP2008039613A (en) * | 2006-08-07 | 2008-02-21 | Denso Corp | Liquid level detecting device |
| JP2010169560A (en) * | 2009-01-23 | 2010-08-05 | Yazaki Corp | Liquid level sensor |
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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 KR KR1020207022265A patent/KR20200126363A/en not_active Application Discontinuation
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| JP2016206019A (en) * | 2015-04-23 | 2016-12-08 | 愛三工業株式会社 | Liquid level detector |
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| Publication number | Publication date |
|---|---|
| JP7223293B2 (en) | 2023-02-16 |
| KR20200126363A (en) | 2020-11-06 |
| JPWO2019163653A1 (en) | 2021-02-04 |
| WO2019163653A1 (en) | 2019-08-29 |
| CN111742198B (en) | 2023-11-17 |
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