JP2021030941A - Lid fitting structure of on-vehicle tank - Google Patents

Abstract

To provide a lid fitting structure of an on-vehicle tank which can adequately prevent falling of a lid from an inlet.SOLUTION: A lid fitting structure of an on-vehicle tank comprises an on-vehicle tank 1, and a tank closing member 2. The on-vehicle tank 1 has: a storage part 3 which stores a liquid used in a vehicle; a cylindrical injection part 4 one end of which is communicated with the storage part, and which has an inlet 4a for injecting the liquid into the storage part at the other end; and a return part 5 which is provided on an outer peripheral edge of the inlet. The tank closing member has: a lid part 21 which fits to the return part, and openably closes the inlet; an annular support part 22 which is mounted on the injection part, and supports the lid part with respect to the injection part; a connection part 23 which is continuous with the lid part and the support part respectively, and connects both of them; and a lock part 24 which stands toward the return part along the injection part from the support part, and locks the support part with respect to the injection part, and the tank closing member closes the inlet.SELECTED DRAWING: Figure 4

Description

The present invention relates to a lid mounting structure for opening and closing a liquid injection port of a tank (vehicle-mounted tank) mounted on a vehicle.

The vehicle is equipped with a tank for storing various liquids such as gasoline, oil, and washer liquid (see Patent Document 1). The tank has an inlet that can be exposed to the outside of the vehicle as needed, and stores a predetermined liquid injected from the inlet. Further, the tank has a lid that can open and close the injection port, and the lid is closed to close the injection port when the liquid is stored, and the lid is opened to open the injection port when the liquid is injected.

Japanese Unexamined Patent Publication No. 2011-143778

In order to prevent leakage of stored liquid and maintain quality of the tank, it is necessary to securely close the injection port with a lid during storage. Therefore, it is necessary to prevent the lid from coming off (falling off) from the injection port and prepare for loss.

For example, a washer tank for storing window washer fluid has a simpler structure than a gasoline tank or an oil tank, and its lid is often a simpler structure than the lid of these tanks. Therefore, even if the structure is simple such as a washer tank, there is a need for a lid mounting structure that can appropriately prevent the lid from coming off from the injection port.

The present invention has been made on the basis of this, and an object of the present invention is to provide a lid mounting structure for an in-vehicle tank capable of appropriately preventing the lid from falling off from an injection port.

The lid mounting structure of the vehicle-mounted tank of the present invention includes a vehicle-mounted tank and a tank closing member. The in-vehicle tank has a storage unit that stores the liquid used in the vehicle, a tubular injection unit that communicates with the storage unit at one end and has an injection port at the other end for injecting the liquid into the storage unit, and an injection port. It has a barb provided on the outer peripheral edge of the. The tank closing member includes a lid portion that fits with the return portion and closes the injection port so as to be openable, an annular support portion that is attached to the injection portion and supports the lid portion with respect to the injection portion, a lid portion, and a support. It has a connecting part that is continuous with each part and connects them, and a locking part that stands up from the support part toward the return part along the injection part and locks the support part with respect to the injection part. Block the entrance.

For example, the locking portion is arranged so as to overlap the connecting portion when viewed in the radial direction of the supporting portion. Further, in the state before the support portion is inserted into the injection portion, the locking portion is tilted inward in the radial direction of the support portion and stands up toward the standing direction. Further, the end surface of the locking portion in the upright direction is an inclined surface having a downward slope toward the outer side in the radial direction of the support portion.

The injection portion may have a first protrusion that contacts the locking portion at both ends of the support portion in the circumferential direction and positions the lid portion in the circumferential direction. Further, the injection portion may have a second protrusion portion that comes into contact with the support portion on one end side of the support portion and positions the support portion with the return portion. In this case, the second protrusion may be continuously provided over the entire circumference of the outer peripheral surface of the injection port.

According to the lid mounting structure of the vehicle-mounted tank of the present invention, it is possible to appropriately prevent the lid from falling off from the injection port.

The perspective view which shows typically the lid attachment structure of the vehicle-mounted tank which concerns on embodiment of this invention. The figure which shows the state before closing the injection port of an injection part with a tank closing member in the lid attachment structure of the vehicle-mounted tank which concerns on embodiment of this invention. The figure which shows the state which closed the injection port of the injection part by the tank closing member in the lid attachment structure of the vehicle-mounted tank which concerns on embodiment of this invention. FIG. 3 is an enlarged partial cross-sectional view showing a state in which the injection port of the injection portion is closed by a tank closing member in the lid mounting structure of the vehicle-mounted tank according to the embodiment of the present invention. In the lid mounting structure of the vehicle-mounted tank according to the embodiment of the present invention, the procedure for mounting the lid portion on the injection portion is shown by partially enlarging the injection portion and the tank closing member, and FIG. The figure which shows the state, (b) is the state in the process of mounting, and (c) is the state after mounting. The figure which shows the state which opened the injection port by removing the lid part in the lid attachment structure of the vehicle-mounted tank which concerns on embodiment of this invention.

Hereinafter, the lid mounting structure of the vehicle-mounted tank according to the embodiment of the present invention will be described with reference to FIGS. 1 to 6.
FIG. 1 is a perspective view schematically showing a lid mounting structure 10 of the vehicle-mounted tank 1 according to the present embodiment. The vehicle equipped with the in-vehicle tank 1 may be either an electric vehicle such as a plug-in hybrid electric vehicle or an engine-driven vehicle. Further, the vehicle may be either a privately-owned passenger vehicle or a commercial vehicle such as a truck or a bus, and the intended use or vehicle type is not particularly limited. Further, it may be either a right-hand drive vehicle or a left-hand drive vehicle.

The lid mounting structure 10 includes an in-vehicle tank (hereinafter, simply referred to as a tank) 1 and a tank closing member 2.
The vehicle-mounted tank (hereinafter, simply referred to as a tank) 1 has a storage unit 3, an injection unit 4, and a return unit 5. The tank 1 is arranged, for example, in the front hood room of the vehicle or under the floor.
The storage unit 3 is a container for storing the liquid used in the vehicle. Liquids include all liquids used in vehicles, such as gasoline and oil, regardless of type. In the present embodiment, as an example, the tank 1 is a washer tank that stores the window washer fluid in the storage unit 3. The window washer fluid is sent to the windshield or the rear glass by, for example, a pump, and is ejected toward the glass surface.

The injection unit 4 has a tubular shape that extends continuously from one end to the other end, and the inside thereof is an injection path for injecting the window washer fluid into the storage unit 3. One end of the injection unit 4 is communicated with the storage unit 3, and the other end has an injection port 4a (see FIG. 2) for injecting the window washer fluid. In the present embodiment, the axial core (hereinafter referred to as the tubular axis S4) of the tubular portion 4b of the injection portion 4 is substantially parallel to the vertical direction (vertical direction in FIG. 1) from one end to the other end. ing. However, the axis of the tubular body portion 4b as a whole or a part thereof may be inclined with respect to the vertical direction. Further, although the tubular body portion 4b is a cylinder as an example, the cross-sectional shape orthogonal to the axis is not limited to a circular shape.

The storage unit 3 and the injection unit 4 are made of a hard resin or metal capable of suppressing deterioration of the window washer liquid that is injected and stored.

The return portion 5 is provided on the outer peripheral edge of the injection port 4a. In the present embodiment, as an example, the return portion 5 is continuous over the entire circumference of the outer peripheral edge of the injection port 4a. However, the return portion 5 may have a continuous form over a part of the outer peripheral edge of the injection port 4a, in other words, an intermittent form in the circumferential direction. By providing the return portion 5, the outer diameter dimension of the injection port 4a is enlarged by the amount of the return portion 5 as compared with the tubular body portion 4b of the injection portion 4.

The tank closing member 2 closes the injection port 4a (see FIG. 2) of the injection unit 4. When the tank closing member 2 closes the injection port 4a, the window washer fluid stored in the storage unit 3 is leaked and the quality is maintained.

2 to 4 show the configurations of the tank closing member 2. FIG. 2 is a perspective view showing a state before the injection port 4a of the injection unit 4 is closed by the tank closing member 2. FIG. 3 is a perspective view showing a state in which the injection port 4a of the injection unit 4 is closed by the tank closing member 2. FIG. 4 is a partial cross-sectional view taken along the cylinder shaft S4 of the tank closing member 2 including the connecting portion 23 and the locking portion 24, which will be described later, in a state where the injection port 4a of the injection portion 4 is closed by the tank closing member 2. ..
As shown in FIGS. 2 to 4, the tank closing member 2 has a lid portion 21, a support portion 22, a connecting portion 23, and a locking portion 24. Hereinafter, each of these parts 21 to 24 will be described.

The lid portion 21 is made of, for example, an elastic resin or the like, and closes the injection port 4a so as to be openable. The lid portion 21 has a plate-shaped closed portion 211 that covers the opening region of the injection port 4a, and a peripheral wall portion 212 that hangs down from the entire circumference of the outer peripheral edge of the closed portion 211. A fitting groove 213 that fits with the return portion 5 is formed between the closed portion 211 and the peripheral wall portion 212 of the lid portion 21. By fitting the fitting groove 213 to the return portion 5, the closed portion 211 of the lid portion 21 covers and closes the injection port 4a. The closed portion 211 is provided with a claw 214 for hooking a finger or the like to lift the closed portion 211 when opening the closed injection port 4a.

The support portion 22 supports the lid portion 21 with respect to the injection portion 4. The support portion 22 is an annular flat body that can be attached to the injection portion 4. However, the form of the support portion 22 is not limited to such a flat body, and may be, for example, an annular body having a thickness larger than a width (difference in outer inner diameter). The inner diameter dimension (spreading dimension) of the support portion 22 is slightly smaller than the outer diameter dimension of the injection port 4a enlarged by the amount of the return portion 5, and is slightly larger than the outer diameter dimension of the tubular body portion 4b. Therefore, the support portion 22 gets over the return portion 5 and is inserted into the injection portion 4.

The connecting portion 23 has a flat strip shape and connects the lid portion 21 and the supporting portion 22. The connecting portion 23 is in a state of being curved from one end to the other end, and one end is continuous with the support portion 22 and the other end is continuous with the lid portion 21. As a result, the lid portion 21 is integrated with the support portion 22 and is supported by the injection portion 4.

The locking portion 24 is a tongue piece (rib) that stands up from the support portion 22 toward the return portion 5 along the injection portion 4 and locks the support portion 22 with respect to the injection portion 4. Specifically, when the lid portion 21 moves in the exit direction from the injection port 4a (upward in FIG. 4), the uppermost portion 24a of the locking portion 24 and the lowermost portion 5a of the return portion 5 which are opposite portions are opposed to each other. Engage in the cylinder shaft S4 direction. By engaging the locking portion 24 with the return portion 5 in this way, the support portion 22 is locked with respect to the injection portion 4, and the support portion 22 inserted into the injection portion 4 is prevented from coming off from the injection portion 4. Can be planned. Thereby, the lid portion 21 can be appropriately prevented from coming off (falling off) from the injection port 4a. As a result, for example, the loss of the lid portion 21 can be effectively suppressed.

It is possible to make the lid portion 21 difficult to pull out from the injection port 4a to some extent by hooking the support portion 22 on the return portion 5 after the insertion into the injection portion 4. However, if the support portion 22 is tilted with respect to the horizontal direction, the lid portion 21 may come off from the injection port 4a. In the present embodiment, even when the support portion 22 is tilted in this way, the locking portion 24 locks the support portion 22 with respect to the injection portion 4, so that the lid portion 21 is removed from the injection port 4a. (Drop) can be prevented more reliably.

The locking portion 24 is supported toward the uppermost portion 24a in a state before the support portion 22 is inserted into the injection portion 4, that is, in a state before the lid portion 21 is attached to the injection portion 4 (see FIG. 5A). The portion 22 is tilted and stands up with respect to the tubular shaft S4 (the axis parallel to the vertical direction in the present embodiment) so as to be tilted inward in the radial direction (approaching the tubular body portion 4b). That is, in the locking portion 24, the distance from the tubular shaft S4 is smaller in the uppermost portion 24a than in the continuous portion with the support portion 22 (La <Lb shown in FIG. 5A). The distance from the cylinder shaft S4 in the continuous portion 24b with the support portion 22 is the same as the inner diameter dimension of the support portion 22, and the distance from the cylinder shaft S4 in the uppermost portion 24a is slightly smaller than the outer diameter dimension of the cylinder body portion 4b. .. The locking portion 24 stands up from the support portion 22 in such an inclined state, and the uppermost portion 24a and its vicinity are separated from the tubular portion 4b of the injection portion 4 starting from the continuous portion with the support portion 22. Elastically deforms to. Therefore, when the lid portion 21 is attached to the injection portion 4, the locking portion 24 in contact with the return portion 5 serves as a guide, which facilitates the attachment work (details of the attachment will be described later).

The locking portion 24 is arranged so as to overlap the connecting portion 23 when viewed in the radial direction of the support portion 22. As a result, when the lid portion 21 is removed to open the injection port 4a, the support portion 22 is pulled outward in the radial direction by the connecting portion 23. Therefore, the uppermost portion 24a of the locking portion 24 and its vicinity are pressed against the tubular portion 4b of the injection portion 4, and the support portion 22 is easily locked to the injection portion 4. In the present embodiment, as an example, the locking portions 24 extend to both sides in the circumferential direction of the support portion 22 from the continuous portion between the support portion 22 and the connecting portion 23, respectively, with substantially the same length. As a result, a sufficiently locking portion between the support portion 22 and the injection portion 4 can be sufficiently secured, and the lid portion 21 can be more appropriately prevented from falling off from the injection port 4a.

As shown in FIG. 4, the end surface 241 of the locking portion 24 in the upright direction is an inclined surface having a downward slope as it goes outward in the radial direction of the support portion 22. The end surface 241 corresponds to a surface forming the uppermost portion 24a of the locking portion 24 which is a portion facing the return portion 5. The inclination angle of the end face 241 (angle θ with respect to the horizontal plane shown in FIG. 4) is not particularly limited. For example, the inclination angle may be set according to the relative size of the end face 241 and the return portion 5.

By making the end surface 241 such an inclined surface, it becomes easy to lock the support portion 22 to the injection portion 4. That is, when the lid portion 21 moves in the exit direction from the injection port 4a (upward in FIG. 4), the end surface 241 is engaged with the end surface 241 in contact with the return portion 5 on the inner side 24c side before the outer side 24d side. Stop (see FIG. 6). The inner side 24c of the end surface 241 is the side on the inner peripheral side of the support portion 22, and the outer side 24d is the side on the outer peripheral side of the support portion 22. Therefore, for example, the locking portion 24 is more likely to be caught on the return portion 5 as compared with an inclined surface having an ascending slope opposite to the end surface 241 or a flat surface having no inclination. As a result, the degree of locking of the support portion 22 with respect to the injection portion 4 can be increased, and the lid 21 is less likely to come off from the injection port 4a.

Here, in the lid mounting structure 10 of the present embodiment, the procedure for inserting the support portion 22 into the injection portion 4 and attaching the lid portion 21 to the injection portion 4 in a state of being supported by the support portion 22 (hereinafter, the lid portion 21). An example of the installation procedure) will be described. FIG. 5 shows an example of the attachment procedure of the lid portion 21 in chronological order. 5 (a) is a state before mounting, (b) is a state during mounting, and (c) is a state after mounting, respectively, in which the injection portion 4 and the tank closing member 2 are partially enlarged. .. Note that FIG. 5C shows a state in which the injection port 4a is closed by the lid portion 21 after being attached to the injection portion 4.

When the lid 21 is attached to the injection port 4, the lid 21 is positioned above the injection port 4a in an appropriate posture as shown in FIG. 5 (a). The proper posture is a posture in which the closed portion 211 of the lid portion 21 overlaps with the opening region of the injection port 4a.

Next, the lid portion 21 is lowered (moved as shown by the arrow A5 shown in FIG. 5A) while maintaining the proper posture, and the locking portion 24 is brought into contact with the return portion 5 as shown in FIG. 5B. Let me. With the locking portion 24 in contact with the return portion 5 as it is, the lid portion 21 is further lowered. The locking portion 24 is tilted and stands up with respect to the tubular shaft S4 so as to approach the tubular body portion 4b toward the uppermost portion 24a. That is, it is in a state of being separated from the tubular body portion 4b toward the downward direction of the lid portion 21. Therefore, the locking portion 24 in contact with the return portion 5 serves as a guide, and the lid portion 21 can be smoothly lowered while maintaining an appropriate posture.

When the locking portion 24 gets over the return portion 5, the support portion 22 is inserted into the injection portion 4 and the lid portion 21 is supported by the injection portion 4 as shown in FIG. 5 (c). In this state, the locking portion 24 is elastically deformed so that the uppermost portion 24a is expanded by the tubular body portion 4b, and the force for elastically returning to the state before the deformation (the state shown in FIG. 5A) is applied. It acts on the tubular body portion 4b. As a result, the locking portion 24 is in a state where the uppermost portion 24a and its vicinity are pressed against the tubular body portion 4b (see arrow A4 shown in FIG. 4).

In the state shown in FIG. 5C, the lid portion 21 attached to the injection portion 4 closes the injection port 4a, and the fitting groove 213 is fitted to the return portion 5. In this state, as shown in FIG. 4, the return portion 5 is in contact with the groove wall portions 215 and 216 of the fitting groove 213 and the groove bottom portion 217, respectively. By pressing the return portion 5 from the three sides of each of these portions 215, 216, and 217, the posture of the lid portion 21 with respect to the injection port 4a can be stabilized, and the closed state of the injection port 4a can be appropriately maintained. it can.

FIG. 6 is a diagram showing an example of a state in which the lid portion 21 is removed and the injection port 4a is opened. As shown in FIG. 6, even if the lid portion 21 moves in the exit direction from the injection port 4a (upward in the figure), the locking portion 24 can be engaged with the return portion 5. Moreover, the support portion 22 is pulled outward in the radial direction by the connecting portion 23, and the locking portion 24 is in a state of pressing the uppermost portion 24a and its vicinity against the tubular body portion 4b. Therefore, the support portion 22 can be locked to the injection portion 4 in a state where the locking portion 24 is in close contact with the tubular body portion 4b. As a result, it is possible to appropriately prevent the lid portion 21 from coming off (falling off) from the injection port 4a.

As described above, in the present embodiment, the support portion 22 is provided with the locking portion 24 to prevent the lid portion 21 from coming off from the injection port 4a. In addition to this, in the present embodiment, the lid portion 21 is prevented from rotating with respect to the injection port 4a, and the lid portion 21 is prevented from falling (preventing slippage) at the injection portion 4. Next, the lid mounting structure 10 for preventing the lid portion 21 from rotating and falling will be described with reference to FIGS. 2 and 3.

The injection portion 4 has a first protrusion 41 that positions the lid portion 21 in the circumferential direction of the support portion 22. The first protrusion 41 comes into contact with the locking portions 24 from both sides in the circumferential direction, and positions the lid portion 21 in the circumferential direction. That is, the first protrusion 41 comes into contact with and sandwiches the locking portion 24 from both sides in the circumferential direction, so that the lid portion 21 can be prevented from rotating. As a result, for example, the displacement of the claw 214 of the lid portion 21 is suppressed, and the work of opening the closed injection port 4a becomes easy.

The first protrusion 41 protrudes from the tubular portion 4b of the injection portion 4. Therefore, the outer diameter of the first protrusion 41 is larger than that of the other parts of the tubular body portion 4b by the amount of the first protrusion 41. The first protrusions 41 come into contact with the locking portions 24 at both ends in the circumferential direction of the support portion 22, and form a pair at predetermined intervals so that the locking portions 24 can be sandwiched from both sides in the circumferential direction. Is placed.

The form of the first protrusion 41 is not particularly limited. For example, it may be in any form such as a cylinder, a prism, and a trapezoidal cone. However, it is preferable that the first protrusion 41 has a form in which the contact area with the locking portion 24 is as large as possible.

Further, the injection portion 4 has a second protrusion 42 for preventing the lid portion 21 from falling on the tubular body portion 4b. The second protruding portion 42 is provided so as to project from the outer peripheral surface of the tubular body portion 4b. In the present embodiment, as an example, the second protrusion 42 is continuous over the entire circumference of the outer peripheral surface of the tubular body portion 4b. However, the second protruding portion 42 may have a continuous form over a part of the outer peripheral surface of the tubular body portion 4b, in other words, an intermittent form in the circumferential direction. For example, the second protrusions may be bosses provided at predetermined intervals in the circumferential direction.

By providing the second protrusion 42, the outer diameter of the portion corresponding to the second protrusion 42 of the tubular body portion 4b is enlarged as compared with the other portions. Therefore, the second protrusion 42 comes into contact with the support portion 22 from one end side in the cylinder shaft S4 direction, or from the lower side in the vertical direction in the present embodiment, and positions the support portion 22 in the cylinder shaft S4 direction. One end side in the direction of the cylinder shaft S4 corresponds to the storage portion 3 side with respect to the support portion 22 inserted into the injection portion 4. As a result, it is possible to prevent the lid portion 21 from falling (sliding down) in the injection portion 4 when the injection port 4a is open, and it becomes easy to perform work such as closing the opened injection port 4a.

Although the embodiment of the present invention has been described above, the above-described embodiment is presented as an example and is not intended to limit the scope of the invention. Such a novel embodiment can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

In the present embodiment, as an example, a second protrusion 42 is provided to prevent the lid 21 from slipping off, but instead of providing such a second protrusion 42, the tubular portion of the injection portion is provided. The vicinity of the injection port may be tapered toward the return portion. As a result, the support portion 22 is caught at any position of the tapered portion, and the lid portion 21 can be prevented from slipping off.

1 ... In-vehicle tank (tank), 2 ... Tank closing member, 3 ... Storage part, 4 ... Injection part, 4a ... Injection port, 4b ... Cylinder part, 5 ... Return part, 5a ... Bottom, 10 ... Lid mounting structure , 21 ... lid, 22 ... support, 23 ... connecting, 24 ... locking, 24a ... top, 24b ... continuous, 24c ... inner, 24d ... outer, 41 ... first protrusion, 42 ... 2nd protrusion, 211 ... Closed part, 212 ... Peripheral wall part, 213 ... Fitting groove, 214 ... Claw, 215, 216 ... Groove wall part, 217 ... Groove bottom part, 241 ... End face, S4 ... Axial core (Cylindrical shaft).

Claims (7)

A storage unit for storing a liquid used in a vehicle, a tubular injection unit having one end communicating with the storage unit and having an injection port for injecting the liquid into the storage unit at the other end, and the injection port. An in-vehicle tank having a return portion provided on the outer peripheral edge of the
An in-vehicle tank lid mounting structure including a tank closing member that closes the injection port.
The tank closing member is
A lid portion that fits with the return portion and closes the injection port so as to be openable.
An annular support portion that is attached to the injection portion and supports the lid portion with respect to the injection portion.
A connecting portion that is continuous with the lid portion and the supporting portion and connects them,
An in-vehicle tank lid mounting structure characterized by having a locking portion that stands up from the support portion toward the return portion along the injection portion and locks the support portion to the injection portion. .. The lid mounting structure for an in-vehicle tank according to claim 1, wherein the locking portion is arranged so as to overlap the connecting portion when viewed in the radial direction of the support portion. The first or second aspect of the present invention, wherein the locking portion is tilted inward in the radial direction of the support portion toward the standing direction in a state before the support portion is inserted into the injection portion. In-vehicle tank lid mounting structure. The lid of an in-vehicle tank according to any one of claims 1 to 3, wherein the end surface of the locking portion in the upright direction is an inclined surface having a downward slope toward the outside in the radial direction of the support portion. Mounting structure. Claims 1 to 4, wherein the injection portion has a first protrusion that contacts the locking portion at both ends in the circumferential direction of the support portion and positions the lid portion in the circumferential direction. The lid mounting structure for the in-vehicle tank according to any one of the items. The fifth aspect of the present invention is characterized in that the injection portion has a second protrusion that comes into contact with the support portion on one end side of the support portion and positions the support portion with the return portion. The lid mounting structure of the in-vehicle tank described. The lid mounting structure for an in-vehicle tank according to claim 6, wherein the second protrusion is continuously provided over the entire circumference of the outer peripheral surface of the injection port.

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