JP2014137271A - Liquid level detection module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid level detection module capable of generating moderation feeling and reducing backlash of a liquid level detector after the completion of assembly.SOLUTION: A liquid level detection module includes: a fuel sender for detecting the height of a liquid level of a fuel; and a holder plate 30 in which this sender is assembled. A body 40 of the fuel sender is held at the plate 30 by a slide to an insertion direction ID from a half-assembled state in which a facing surface is brought into contact with the holder plate 30. On the other hand, the holder plate 30 has a plurality of locking claws for locking the body 40 and a protrusion 35 accommodated in a recess 46 of the body 40 in a half-assembled state. When the body 40 slides in the insertion direction ID, the protrusion 35 rides over a peripheral wall 47 facing the recess 46. Thereby, the body 40 is pressed against each locking claw by the protrusion 35.

Description

  The present invention relates to a liquid level detection module including a liquid level detector that detects the height of the liquid level of a liquid stored in a container.

  2. Description of the Related Art Conventionally, a liquid level detector that detects the level level of a liquid level is installed in a container such as a fuel tank while being held by a holder, as disclosed in Patent Document 1, for example. In the liquid level detection module of such a form, the case of the liquid level detector is assembled to the holder by being slid in a specific assembly direction with respect to the holder.

JP 2003-214923 A

  As disclosed in Patent Document 1, in the configuration in which the case is simply slid with respect to the holder, the reaction force in the process of sliding the case in the assembling direction hardly fluctuates. If the reaction force remains constant in this way, the operator cannot obtain a sense of moderation that serves as an indication of whether or not the slide process has been completed. In addition, even if the sliding process is completed correctly, the case of the assembly structure described above can still cause backlash of the case with respect to the holder.

  The present invention has been made in view of the above problems, and its purpose is to detect a liquid level that can cause a sense of moderation due to a slide and that can reduce the backlash of the liquid level detector after completion of assembly. Is to provide modules.

  In order to achieve the above-mentioned object, the invention according to claim 1 includes a liquid level detector (10) for detecting the level of the liquid level stored in the container (90), and a liquid level detector. The liquid level detector includes a fixing member (30, 130) to be assembled, and the liquid level detector is formed with a recess (46, 146) recessed from an opposing surface (42) facing the fixing member. The holding member (40, 140) held by the fixing member by sliding in the assembling direction (ID) from the semi-assembled state in which the opposing surface is brought into contact with the fixing member. Locking claws (32a to 32d) for locking the body, and peripheral walls (47, 147) projecting so as to be accommodated in the recess in the semi-assembled state and facing the recess by sliding in the assembly direction of the holding body Protrusion that pushes the holder against the locking claw Is characterized by having a (35,135), the.

  In the present invention, when the holder for the liquid level detector is assembled to the fixing member, the protruding portion housed in the recess in the semi-assembled state rides on the peripheral wall facing the recess. According to such behavior of the protruding portion, a clear increase in reaction force can occur in the step of sliding the holding body in the assembling direction from the semi-assembled state. Due to such fluctuations in the reaction force, the worker can obtain a sense of moderation. In addition, the protruding portion of the fixing member that has been assembled with the holding body presses the holding body against the locking claw while riding on the peripheral wall. Therefore, the play of the liquid level detector with respect to the fixing member can be reduced.

  Note that the reference numbers in the parentheses are merely examples of correspondences with specific configurations in the embodiments to be described later in order to facilitate understanding of the present invention, and limit the scope of the present invention. It is not a thing.

It is a front view of the liquid level detection module by one Embodiment of this invention. 1 is a perspective view of a fuel sender according to an embodiment of the present invention. It is a perspective view of the holder plate by one Embodiment of this invention. It is a figure for demonstrating the shape of an extending | stretching part and a protrusion part, Comprising: It is the IV-IV sectional view taken on the line of FIG. It is a figure which shows the fuel sender attached to a holder plate. It is a figure for demonstrating the behavior of the protrusion part in the assembly | attachment operation | work of a fuel sender in order. It is a figure which shows the modification of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. A liquid level detection module 100 according to an embodiment of the present invention is installed in a vehicle and is installed in a fuel tank 90 that stores fuel as liquid as shown in FIG. First, the configuration of the liquid level detection module 100 will be described.

  The liquid level detection module 100 includes a fuel sender 10, a lid 20 attached to the fuel tank 90, a holder plate 30 to which the fuel sender 10 is assembled, and the like. In the following description, the axial direction of the opening 95 provided in the ceiling portion 93 of the tank 90 in order to insert the liquid level detection module 100 into the fuel tank 90 is the insertion direction ID of the liquid level detection module 100. To do. In addition, a direction that intersects the insertion direction ID substantially perpendicularly and along the planar direction of the holder plate 30 is defined as a width direction WD, and further substantially perpendicular to the insertion direction ID and in the thickness direction of the holder plate 30. The direction along is defined as the standing direction SD.

  The fuel sender 10 shown in FIGS. 1 and 2 detects the height of the liquid level of the fuel stored in the fuel tank 90. The fuel sender 10 includes a float 55, a magnet holder 50, a body 40, a Hall IC 60, and the like.

  The float 55 is formed of a material having a specific gravity smaller than that of a fuel such as foamed ebonite. The float 55 can float on the fuel level. The float 55 is supported on the magnet holder 50 by a float arm 56 made of a metal material such as stainless steel.

  The magnet holder 50 is formed in a cylindrical shape using, for example, polyacetal (POM) resin. The magnet holder 50 holds the float arm 56. The magnet holder 50 is rotatably supported on the body 40. A pair of magnets 53 exhibiting ferromagnetism are embedded in the magnet holder 50. These magnets 53 rotate integrally with the magnet holder 50.

  The body 40 is made of, for example, polyphenylene sulfide (PPS) resin or the like. The body 40 is assembled to the holder plate 30 and is held by the plate 30. The body 40 has a bottom wall portion 41, a peripheral wall portion 43, and a support shaft 45. The bottom wall portion 41 is formed in a plate shape, and forms a facing surface 42 that faces the holder plate 30 in the standing direction SD. The peripheral wall portion 43 is erected from the peripheral portion of the bottom wall portion 41 toward the magnet holder 50 along the erection direction SD. The peripheral wall 43 is formed so as to surround the bottom wall 41. The support shaft 45 protrudes in a cylindrical shape from the bottom wall portion 41 along the standing direction SD. A Hall IC 60 is accommodated in the support shaft 45. The body 40 supports the magnet holder 50 rotatably by fitting the bearing portion of the magnet holder to the support shaft 45.

  In addition, the body 40 is formed with a recess 46 (see also FIG. 6A) that opens toward the holder plate 30 by being recessed from the facing surface 42. The recess 46 is surrounded by a peripheral wall 47. A wall surface 47a facing the recess 46 in the peripheral wall 47 is formed along the standing direction SD. The recess 46 is provided in the insertion direction ID with respect to the support shaft 45, thereby being shifted in the insertion direction ID with respect to the Hall IC 60.

  The Hall IC 60 is a detection element for detecting the height of the liquid level, and specifically detects the rotation angle of the magnet holder 50 with respect to the support shaft 45. The Hall IC 60 is embedded and arranged in the support shaft 45 of the body 40 so as to be sandwiched between a pair of magnets 53 provided in the magnet holder 50. The Hall IC 60 is connected to equipment outside the fuel tank 90 via three lead wires 61 to 63 and a terminal. The Hall IC 60 receives an action of a magnetic field from the outside in a state where a voltage is applied, and outputs a voltage proportional to the density of the magnetic flux passing through the Hall IC 60 to an external device as an output result.

  With the above configuration, the reciprocating motion of the float 55 that moves up and down following the fuel by the float arm 56 supported by the magnet holder 50 is converted into a rotational motion to be an integral element composed of the float arm 56 and the magnet holder 50. Communicated. Therefore, the magnet holder 50 follows the liquid level of the fuel stored in the fuel tank 90 and rotates relative to the body 40. Due to the relative rotation of the magnet holder 50, the magnetic flux density of the magnetic field acting on the Hall IC 60 changes, whereby the voltage output from the Hall IC 60 changes. In this way, the fuel sender 10 realizes detection of the rotation angle of the magnet holder 50 and consequently the height of the fuel level.

  The lid 20 shown in FIG. 1 is formed of a resin material or the like in a disk shape having a larger diameter than the opening 95 and closes the opening 95. A lid 21 and a connector part 23 are formed on the lid 20. The flange 21 protrudes annularly outward in the radial direction from the main body portion of the lid body 20, and is in liquid-tight contact with the peripheral portion 96 of the opening 95 from the outside of the fuel tank 90. The connector portion 23 protrudes from the main body portion of the lid body 20 toward the outside of the fuel tank 90. In order to electrically connect the Hall IC 60 and an external device, a mating connector portion (not shown) connected to the external device is fitted into the connector portion 23.

  The holder plate 30 shown in FIGS. 1, 3, and 4 is formed in a longitudinal shape by a plate material such as metal and is held by the lid 20. The holder plate 30 includes a holder main body portion 31, locking claws 32 a to 32 d, a guide wall 33, a guard wall 37, an extending portion 34, and a protruding portion 35.

  The holder main body 31 is formed in a longitudinal shape having the insertion direction ID as a longitudinal direction. The holder main body 31 extends from the lid 20 along the insertion direction ID. The holder body 31 is located on the opposite side of the magnet holder 50 with the body 40 interposed therebetween, and is opposed to the facing surface 42 in the standing direction SD. The holder main body 31 supports the locking claws 32 a to 32 d, the guide wall 33, and the guard wall 37.

  The locking claws 32 a to 32 d are configured to lock the body 40. The locking claws 32a to 32d are located between the guide wall 33 and the guard wall 37 in the insertion direction ID. The locking claw 32d faces the locking claw 32c in the width direction WD, and is shifted from the locking claw 32b. Similarly, the locking claw 32d is opposed to the locking claw 32b in the width direction WD, and is shifted from the locking claw 32c in the insertion direction ID. These four locking claws 32 a to 32 a extend from the outer edge portion of the holder main body 31 in the width direction WD toward the outside in the width direction WD, and are supported by the holder main body 31. Each distal end portion in the extending direction of each of the locking claws 32a to 32a is bent inward in the width direction WD and faces the main body portion 31 in the standing direction SD.

  The guide wall 33 is positioned in a direction opposite to the insertion direction ID with respect to the locking claws 32a to 32d. A pair of guide walls 33 are provided facing the width direction WD. Each guide wall 33 is erected along the erection direction SD, and extends along the insertion direction ID. The guide wall 33 is formed by bending an outer edge portion of a plate material extending from the holder main body portion 31 to the outside in the width direction WD toward the body 40 side. In order to correctly perform such bending, notches 33a and 33b are formed on both sides of each guide wall 33 toward the inside in the width direction WD. The distance between the pair of bent guide walls 33 corresponds to the dimension of the body 40 in the width direction WD.

  The guard wall 37 is erected on the body 40 side from the distal end portion in the insertion direction ID of the holder body 31 along the erection direction SD. The pair of guard walls 37 oppose each other in the width direction WD. Each guard wall 37 is inclined toward the center of the holder main body 31 in the width direction WD as it goes in the insertion direction ID.

  The extending portion 34 is formed in the center of the plate 30 in the width direction WD by providing the holder plate 30 with a U-shaped punching hole 34a having a right corner. In order to suppress the strength reduction of the holder plate 30 due to the formation of the punching hole 34a, the position where the punching hole 34a is formed is shifted in the insertion direction ID with respect to the notch 33a.

  Due to the shape of the punched hole 34 a, the extending portion 34 extends from the holder main body portion 31 in a strip shape along the insertion direction ID that is the longitudinal direction of the holder plate 30. Of the both ends of the extending portion 34 in the extending direction, one end located on the opposite side to the insertion direction ID is supported by the holder main body 31. On the other hand, the protrusion part 35 is provided in the other end located in insertion direction ID among the both ends of the extending | stretching direction in the extending | stretching part 34. As shown in FIG. The extending portion 34 can be bent along the standing direction SD by an external force received by the protruding portion 35.

  The protruding portion 35 is provided at the distal end in the extending direction of the extending portion 34 as described above, and protrudes from the extending portion 34 in the standing direction SD. The protruding portion 35 is formed by curving the tip of the extending portion 34 in a smooth arc shape. The protruding portion 35 extends along the width direction WD. Thus, a ridge line portion 36 along the width direction WD is formed at the top of the protruding portion 35 that is positioned most in the standing direction SD. The protruding portion 35 is located between the pair of locking claws 32a and 32b (32c and 32d) that are shifted from each other in the insertion direction ID. In addition, the protruding portion 35 is located at a substantially equal distance from each of the pair of locking claws 32a and 32c (32b and 32d) opposed in the width direction WD.

  Each process of the operation | work which assembles the fuel sender 10 demonstrated above to the holder plate 30 is demonstrated based on FIG. 6, referring FIG. 5 and 6, a part of the fuel sender 10 is omitted for convenience of explanation. Further, the assembly direction in which the fuel sender 10 is assembled to the holder plate 30 coincides with the insertion direction ID.

  As shown in FIG. 6A, first, the operator adjusts the relative position in the insertion direction ID of the body 40 with respect to the holder plate 30 so that at least a part of the protruding portion 35 is accommodated in the recess 46, and the body 40. The opposing surface 42 is brought into contact with the holder plate 30. At this time, the relative position of the body 40 in the width direction WD with respect to the holder plate 30 is defined by the pair of guide walls 33.

  Next, the operator slides the body 40 in the insertion direction ID as shown in FIG. 6B from the half-assembled state in which the opposing surface 42 is in contact with the holder plate 30. In this sliding step, the displacement of the body 40 in the width direction WD is restricted by the guide wall 33 facing the body 40 in the semi-assembled state. Therefore, the operator can slide the body 40 accurately along the insertion direction ID.

  According to the relative displacement of the body 40, the arcuate surface 35 a of the projecting portion 35 comes into line contact with the wall surface 47 a of the peripheral wall 47 facing the recess 46. When the sliding process is further continued, the extending portion 34 bends in a direction away from the body 40 due to a reaction force that the protruding portion 35 receives from the peripheral wall 47. Accordingly, the protruding portion 35 is detached from the recess 46 while sliding the arcuate surface 35 a with respect to the peripheral wall 47.

  When the above-described sliding process is completed, the projecting portion 35 is in a state of riding on the peripheral wall 47 located on the back side of the support shaft 45 as shown in FIG. 6C. The protruding portion 35 urges the body 40 in the standing direction SD at the ridge portion 36 brought into contact with the peripheral wall 47 by the restoring force of the bent extending portion 34. Thus, the body 40 is pressed against the respective locking claws 32a to 32d, and is held by the holder plate 30 while being sandwiched between the protruding portion 35 and the respective locking claws 32a to 32d.

  According to this embodiment described so far, the projecting portion 35 accommodated in the recess 46 in the semi-assembled state rides on the peripheral wall 47 when the body 40 is assembled to the holder plate 30. According to the behavior of the protruding portion 35, in the sliding process, a clear increase in reaction force occurs due to the frictional force generated between the arcuate surface 35 a and the peripheral wall 47 and the restoring force of the extending portion 34. By such reaction force fluctuations, the operator can obtain a sense of moderation that serves as an indication of whether or not the slide process has been completed. Therefore, the worker can reliably complete the assembly work of the body 40.

  In addition, when the assembly of the body 40 is completed, the projecting portion 35 presses the body 40 against each of the locking claws 32 a to 32 d while riding on the peripheral wall 47. Therefore, in the assembled state in which the assembly work of the body 40 is completed, the play of the fuel sender 10 with respect to the holder plate 30 can be reliably reduced.

  Further, according to the present embodiment, since the protruding portion 35 is formed at the tip of the extending portion 34, the ease of displacement of the protruding portion 35 with respect to the holder main body portion 31 depends on the length, thickness, and width of the extending portion 34. It can be adjusted by the shape. Thus, the mode of reaction force transmitted from the body 40 to the worker can be easily adjusted, so that the moderation feeling can be optimized to be easily perceived by the worker.

  In addition, since the extending portion 34 has a shape that extends along the longitudinal direction of the holder plate 30, the length of the extending portion 34 is easily secured. Thus, according to the adjustment range of the ease of displacement of the protrusion 35 being increased, it becomes easier to realize a moderation feeling that is easily perceived by the operator.

  Furthermore, in this embodiment, since the protrusion part 35 and the surrounding wall 47 are in line contact, the frictional force produced between these becomes large. Thereby, the peak of the reaction force generated in the sliding process can be set high. Therefore, the sense of moderation perceived by the worker becomes clearer.

  In addition, according to the present embodiment, the protrusion 35 is located between the locking claw 32a (32c) and the locking claw 32b (32d) in the insertion direction ID. In addition, the distance between the protrusion 35 and each of the locking claws 32a to 32d is substantially equal. According to the arrangement of the protruding portion 35 and the locking claws 32a to 32d, the protruding portion 35 can reliably press the body 40 against all the locking claws 32a to 32d.

  Further, in the present embodiment, the protruding portion 35 presses a portion of the opposing surface 42 located on the back side of the support shaft 45, and the engaging claws 32 a to 32 d are arranged so as to surround the support shaft 45. According to the arrangement of the protruding portion 35 and the locking claws 32a to 32d, it is possible to more effectively suppress the play of the fuel sender 10 due to the rotation of the magnet holder 50.

  In addition, if the recess 46 and the Hall IC 60 are shifted in the insertion direction ID as in the present embodiment, the shape change of the fuel sender 10 accompanying the formation of the recess 46 can be minimized. Therefore, the insertion direction ID of the support shaft 45 is suitable for the position where the recess 46 is formed.

  Furthermore, according to the present embodiment, the displacement in the width direction WD in the sliding process is restricted by the pair of guide walls 33, so that the operator can slide the body 40 correctly in the insertion direction ID. For this reason, the reaction force can be surely fluctuated as the protrusion 35 rides up. Therefore, the effect of making the worker perceive a moderation feeling is exhibited with higher certainty.

  In this embodiment, the insertion direction ID corresponds to the “assembly direction” described in the claims, the fuel tank 90 corresponds to the “container” described in the claims, and the fuel sender 10 is patented. This corresponds to the “liquid level detector” recited in the claims. The holder plate 30 corresponds to the “fixing member” described in the claims, the holder main body 31 corresponds to the “support main body” described in the claims, and the guide wall 33 corresponds to the claims. It corresponds to the “extension wall” described. Further, the body 40 corresponds to the “holding body” described in the claims, and the Hall IC 60 corresponds to the “detection element” described in the claims.

(Other embodiments)
As mentioned above, although one embodiment by the present invention was described, the present invention is not interpreted limited to the above-mentioned embodiment, and is applied to various embodiments and combinations within the range which does not deviate from the gist of the present invention. be able to.

  In the first modification of the above embodiment, as shown in FIG. 7A, the V-shaped groove 146 functions as a recess recessed from the facing surface 42. The V-shaped groove 146 is a groove having a V-shaped cross section extending in the width direction WD, and is formed at a location on the opposite surface 42 that is the back side of the Hall IC 60 (the direction opposite to the standing direction SD). The V-shaped groove 146 is an existing configuration of the body 140, and is for suppressing the formation of nests when the body 140 is molded.

  On the other hand, in the holder plate 130 of the modified example 1, the protrusion 135 is formed in a shape that is accommodated in the V-shaped groove 146 in a semi-assembled state. As shown in FIG. 7B, the protruding portion 135 is detached from the V-shaped groove 146 by the sliding of the body 140 in the insertion direction ID, and rides on the peripheral wall 147 facing the V-shaped groove 146. Therefore, even in the first modification, it is possible to make the worker perceive a moderation feeling. In addition, the protruding portion 135 can press the body 140 against each of the locking claws 32a to 32d (see FIG. 5) by the restoring force of the bent extending portion 134. Therefore, also in Modification 1, the effect of reducing rattling is exhibited as in the above embodiment. In the first modification, the V-shaped groove 146 corresponds to a “recess” described in the claims, and the body 140 corresponds to a “holding body” described in the claims.

  In the said embodiment, the protrusion part 35 pressed the body 40 on each latching claw 32a-32d with the restoring force of the extending | stretching part 34. As shown in FIG. However, for example, if the protruding portion itself is formed to be elastically deformable, the configuration such as the extending portion may be omitted. Moreover, the shape of the extending portion may be changed as appropriate. For example, the extending portion may extend along the width direction WD or may extend in a direction inclined with respect to the insertion direction ID.

  In the above embodiment, the protrusion 35 has a shape having a predetermined length in the width direction WD. However, the shape and position of the protrusion may be changed as appropriate. Further, the protruding portion and the peripheral wall may not be in line contact with each other by the slide of the body. For example, the protruding portion may be formed in a hemispherical shape, and the contact state between the protruding portion and the peripheral wall caused by the sliding of the body may be point contact. Moreover, the some protrusion part may be formed so that it may be accommodated in a recess in a semi-assembled state.

  In the above embodiment, the four locking claws 32a to 32d arranged in the insertion direction ID and the width direction WD are provided on the holder plate 30, but the number, shape, and arrangement of the locking claws are appropriately changed. It's okay. For example, a pair of locking claws arranged in the width direction WD may be formed, and a protruding portion may be disposed between the locking claws 32a.

  In the above embodiment, the form of the guide wall 33 that assists the attachment of the fuel sender 10 to the holder plate 30 may be changed as appropriate. Alternatively, the guide wall portion may be omitted.

  In the above-described embodiment, the fuel sender 10 is configured to realize the detection of the fuel liquid level by measuring the rotation angle of the magnet holder 50 by the Hall IC 60. However, the fuel sender is not of the magnetoelectric conversion type as in the above embodiment, for example, by measuring the electric resistance value that increases or decreases due to the rotation of the rotating body, to realize the detection of the fuel level. An electric resistance type may be used.

  As described above, the present invention has been described based on the example applied to the liquid level detection module that detects the height of the liquid level of the fuel stored in the fuel tank 90 of the vehicle. However, the application target of the present invention is the liquid level of the fuel. It is not limited to height detection. The present invention can be applied to a liquid level detection module in a container of other liquids mounted on the vehicle, such as brake fluid, engine cooling water, and engine oil. Furthermore, the present invention may be applied not only to vehicles but also to liquid level detection modules in containers provided in various consumer devices and various transport machines.

ID insertion direction (assembly direction), WD width direction, 10 fuel sender (liquid level detector), 30, 130 holder plate (fixing member), 31 holder body (support body), 32a to 32d locking claw, 33 Guide wall (extension wall), 34, 134 Extension part, 35, 135 Projection part, 40, 140 Body (holding body), 42 Opposing surface, 46 Recess, 146 V-shaped groove (recess), 47, 147 , 60 Hall IC (detection element), 90 Fuel tank (container), 100 Liquid level detection module

Claims (8)

Liquid level detection comprising: a liquid level detector (10) for detecting the height of the liquid level of the liquid stored in the container (90); and a fixing member (30, 130) to which the liquid level detector is assembled. A module,
The liquid level detector is
A recess (46, 146) that is recessed from the facing surface (42) facing the fixing member is formed, and the assembling direction (ID) from the semi-assembled state in which the facing surface is in contact with the fixing member. A holding body (40, 140) held by the fixing member by a slide,
The fixing member is
Locking claws (32a to 32d) for locking the holding body;
By projecting so as to be accommodated in the recess in the semi-assembled state and sliding on the peripheral body (47, 147) facing the recess by sliding the holder in the assembly direction, the holder is engaged with the engagement member. A liquid level detection module, comprising: protrusions (35, 135) pressed against the pawls. The fixing member is
A support body (31) for supporting the locking claws;
2. The liquid level detection module according to claim 1, further comprising: an extending portion (34, 134) extending from the support body and provided with the protruding portion at a distal end in the extending direction. The fixing member is formed in a longitudinal shape,
The liquid level detection module according to claim 2, wherein the extending portion extends from the support body along a longitudinal direction of the fixing member.   The liquid level detection module according to any one of claims 1 to 3, wherein the protruding portion is in line contact with the peripheral wall by sliding the holding body in the assembly direction. The fixing member has a set of the locking claws (32a, 32b) positioned so as to be shifted from each other in the assembly direction,
5. The liquid level detection module according to claim 1, wherein the protrusion is positioned between the set of locking claws in the assembly direction. 6. The fixing member has a pair of locking claws (32a, 32c) facing each other with the holding body interposed therebetween,
The liquid level detection module according to claim 1, wherein the protruding portion is located at a substantially equal distance from each of the pair of locking claws. The liquid level detector is disposed in the holding body, and includes a detection element (60) for detecting the height of the liquid level,
The liquid level detection module according to any one of claims 1 to 6, wherein the recess is formed at a position shifted in the assembly direction with respect to the detection element.   The fixing member is opposed to the holding body in the semi-assembled state and extends along the assembling direction, so that the holding body in a direction (WD) intersecting the assembling direction is provided. The liquid level detection module according to any one of claims 1 to 7, further comprising a pair of extending walls (33) for regulating the displacement of the liquid.

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