JP6406099B2 - Cleaning device - Google Patents

Description

  The present invention relates to a cleaning device for injecting a cleaning liquid.

  Conventionally, a vehicle has been provided with a cleaning device for injecting a cleaning liquid. A cleaning device or the like that cleans an object to be cleaned such as a headlamp is disposed, for example, inside (back side) of the front bumper, and protrudes to the outside only during cleaning to inject cleaning liquid onto the object to be cleaned such as a headlamp. As such a cleaning device, a valve opening communicating with the internal flow path of the piston portion is provided on the distal end side of the long cylindrical piston portion provided so as to be able to appear and retract with respect to the cylinder member, thereby closing the valve opening. When the valve body is pressed and contacted and the pressure in the internal flow path of the piston portion increases, the valve body moves and the internal flow path communicates with the injection port (for example, see Patent Document 1). In such a cleaning apparatus, the piston member is protruded by the pressure of the cleaning liquid fed to the internal flow path, and when the pressure of the cleaning liquid further increases, the valve body is moved and the cleaning liquid is injected from the injection port.

JP 2012-218706 A

  By the way, in the above-described cleaning device, the valve urging member that urges the valve body is supported by a lid member that is separate from the member in which the valve opening is formed, and therefore the valve body until the lid member is assembled. The pressing contact state is not determined. And since the lid member closes the flow path, it is difficult to confirm the state from the outside even if the pressure contact state of the valve body becomes abnormal, for example, the valve body tilts when the lid member is assembled. End up. This causes, for example, an increase in the defect rate after assembling all the parts, and thus causes an increase in the cost of the cleaning device.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a cleaning apparatus that can easily confirm an abnormality at an early stage during manufacturing.

A cleaning device that solves the above-described problem is provided with a long cylindrical cylinder member, a long cylindrical piston portion that can be projected and retracted with respect to a tip end of the cylinder member, and a tip end side of the piston portion. A valve receiving portion formed with a valve opening communicating with the internal flow path of the piston portion; and an injection port for injecting the cleaning liquid fed through the internal flow path and the valve opening to the object to be cleaned. And a valve body that is in pressure contact with the valve receiving portion so as to close the valve opening and communicates the internal flow path with the injection port when the pressure in the internal flow path is equal to or higher than a preset value. And a valve urging member that urges the valve body toward the valve receiving portion, wherein the urging support portion that supports the valve urging member is formed integrally with the valve receiving portion. are, for opening the valve, transmural along the longitudinal direction of the piston portion An erected portion is formed outside the valve receiving portion along the longitudinal direction of the piston portion, and the urging support portion faces the valve opening from the tip of the erected portion. formed to extend to the position, the biasing valve member, one end Ru is a compression coil spring which is supported the other end to the biasing supporting portion biases along the valve element in the longitudinal direction.

  According to this configuration, the urging support portion that supports the valve urging member is integrally formed with the valve receiving portion in which the valve opening is formed. The valve body can be pressed into contact with the valve receiving portion so as to close the valve opening while supporting the valve. Therefore, the pressure contact state of the valve body can be determined without depending on a separate member, for example, the pressure contact of the valve body in a state where all the members are not assembled and the valve body is exposed. Whether or not the state is normal can be confirmed. Specifically, for example, in the case where the urging support portion is formed on the nozzle portion configured separately from the valve receiving portion, the pressing contact state of the valve body is not determined until the nozzle portion is assembled. Even if the pressing contact state becomes abnormal, such as when the valve body is tilted during assembly, it may be difficult to confirm the state from the outside. On the other hand, in the above configuration, the pressure contact state of the valve body is determined before assembling the nozzle portion (before the valve body and the like are covered), and whether or not it is normal from the outside (visually etc. Easily). Therefore, abnormalities can be easily confirmed at an early stage at the time of manufacture, for example, the defect rate after assembling all the parts can be reduced, and thus the cost of the cleaning device can be reduced. Become.

  According to this configuration, the urging support portion is opposed to the valve opening, and the valve body is stably (straightly) urged to the valve opening side by the compression coil spring supported by the urging support portion. be able to. Therefore, the valve body can be stably pressed into contact with the valve receiving portion (so as to close the valve opening), and in the state where the pressure in the internal channel does not reach the preset value, the leakage of the cleaning liquid, etc. Can be stably prevented.

In the cleaning apparatus, it is preferable that the standing portion is provided with a guide portion that guides the movement of the valve body along the longitudinal direction.
According to this configuration, since the guide portion that guides the movement of the valve body along the longitudinal direction is provided in the standing portion, for example, the valve body is prevented from being displaced in a direction orthogonal to the longitudinal direction. Is done.

A cleaning device that solves the above-described problem is provided with a long cylindrical cylinder member, a long cylindrical piston portion that can be projected and retracted with respect to a tip end of the cylinder member, and a tip end side of the piston portion. A valve receiving portion formed with a valve opening communicating with the internal flow path of the piston portion; and an injection port for injecting the cleaning liquid fed through the internal flow path and the valve opening to the object to be cleaned. And a valve body that is in pressure contact with the valve receiving portion so as to close the valve opening and communicates the internal flow path with the injection port when the pressure in the internal flow path is equal to or higher than a preset value. And a valve urging member that urges the valve body toward the valve receiving portion, wherein the urging support portion that supports the valve urging member is formed integrally with the valve receiving portion. are, for opening the valve, extends along a longitudinal direction of said piston part An opening penetrating to the side of the valve tubular portion whose tip is closed, the biasing support portion is a support groove formed in the valve tubular portion, and the valve biasing member is: proximal end Ru is a leaf spring that the supported by being inserted into the support groove tip to urge the valve body from the outside to the inside of the side of the valve tubular portion.
According to this configuration, the urging support portion that supports the valve urging member is integrally formed with the valve receiving portion in which the valve opening is formed. The valve body can be pressed into contact with the valve receiving portion so as to close the valve opening while supporting the valve. Therefore, the pressure contact state of the valve body can be determined without depending on a separate member, for example, the pressure contact of the valve body in a state where all the members are not assembled and the valve body is exposed. Whether or not the state is normal can be confirmed. Specifically, for example, in the case where the urging support portion is formed on the nozzle portion configured separately from the valve receiving portion, the pressing contact state of the valve body is not determined until the nozzle portion is assembled. Even if the pressing contact state becomes abnormal, such as when the valve body is tilted during assembly, it may be difficult to confirm the state from the outside. On the other hand, in the above configuration, the pressure contact state of the valve body is determined before assembling the nozzle portion (before the valve body and the like are covered), and whether or not it is normal from the outside (visually etc. Easily). Therefore, abnormalities can be easily confirmed at an early stage at the time of manufacture, for example, the defect rate after assembling all the parts can be reduced, and thus the cost of the cleaning device can be reduced. Become.

  According to this configuration, an abnormality can be easily confirmed at an early stage during manufacturing while using a configuration using a leaf spring.

  In the cleaning apparatus of the present invention, an abnormality can be easily confirmed at an early stage during manufacture.

1 is a partially enlarged perspective view of a vehicle in an embodiment. (A) is a front view of the headlamp cleaning device in one embodiment. (B) is a partial cross-sectional view of the headlamp cleaning device. 1 is a partially enlarged cross-sectional view of a headlamp cleaning device in one embodiment. Sectional drawing along the AA line of Fig.2 (a). 1 is a partially exploded perspective view of a headlamp cleaning device in one embodiment. 1 is a partially exploded perspective view of a headlamp cleaning device in one embodiment. The partial perspective view of the piston member in one embodiment, a valve body, and a compression coil spring. The piston member in one Embodiment and the partial cross section figure of a valve body. (A) And (b) is sectional drawing for demonstrating the effect | action of the headlamp cleaning apparatus in one Embodiment. The partially expanded sectional view for demonstrating the effect | action of the headlamp cleaning apparatus in one Embodiment. The schematic diagram for demonstrating the effect | action of the oscillation chamber in one Embodiment. The partial perspective view of the piston member in another example, a valve body, and a leaf | plate spring. The piston member in another example, a valve body, and the partial exploded perspective view of a leaf | plate spring. The partially expanded sectional view of the headlamp cleaning apparatus in another example. The partially expanded sectional view of the headlamp cleaning apparatus in another example. The partially expanded sectional view for demonstrating the effect | action of the headlamp cleaning apparatus in another example.

Hereinafter, an embodiment of a headlamp cleaning device will be described with reference to FIGS.
As shown in FIG. 1, the vehicle 1 is provided with a headlamp light source 2 and a headlamp cover 3 that covers the headlamp light source 2. A headlamp cleaning device 6 including a nozzle member 5 that protrudes outward from the front bumper 4 and injects the cleaning liquid onto the headlamp cover 3 at the time of cleaning is disposed inside (rear side) of the front bumper 4 as a vehicle body. Is provided. A nozzle cover member 7 having an outer surface flush with the outer surface of the front bumper 4 is fixed to the tip of the nozzle member 5 in a state where it does not protrude during non-cleaning.

  As shown in FIGS. 2A and 2B, the headlamp cleaning device 6 is made of a resin and is an elongated cylinder fixed to the inside (back side) of the front bumper 4 in addition to the nozzle member 5. Cylinder member 11 and a lid member 12 fitted to the tip of the cylinder member 11. A cleaning liquid introducing portion 11a into which the cleaning liquid is introduced protrudes (is bent and protrudes in the present embodiment) and is integrally formed at the base end portion of the cylinder member 11, and the cleaning liquid introducing portion 11a has an external cleaning liquid supply path. Hose H is connected, and an electric pump (not shown) is connected through the hose H.

  The nozzle member 5 includes a piston member 13 as a long cylindrical piston portion which is provided so as to be able to protrude and retract with respect to a tip of the cylinder member 11 (specifically, a central opening 12a of the lid member 12), and a tip of the piston member 13. The nozzle support member 14 is fitted, the two nozzle bodies 15 are supported by the nozzle support member 14, and the nozzle tip 16 is fitted to each nozzle body 15. In the present embodiment, the nozzle support member 14, the nozzle body 15, and the nozzle chip 16 constitute a nozzle portion.

  Specifically, as shown in FIG. 3, an inner fitting portion 13 a having a reduced outer diameter is formed at the tip portion (upper end portion in the drawing) of the piston member 13. Further, as shown in FIG. 2 (b), a pair of outwardly extending portions 13b having a larger outer diameter is formed at the base end portion of the piston member 13, thereby forming an annular recess 13c therebetween. An annular seal member 17 is externally fitted and accommodated in the annular recess 13c. The seal member 17 is in slidable contact with the inner peripheral surface of the cylinder member 11 and is in close contact with the liquid. The piston member 13 has an internal flow path 13d extending along the longitudinal direction of the piston member 13, and an opening communicating with the internal flow path 13d at the tip of the piston member 13. A valve opening 13e, which is an opening penetrating along the longitudinal direction, is formed, and a distal end surface of the piston member 13 where the valve opening 13e is formed is a valve receiving portion 13f.

  As shown in FIG. 3, the nozzle support member 14 includes an outer fitting cylinder portion 14a that is fitted to the inner fitting portion 13a, and extends substantially the same diameter as the outer fitting cylinder portion 14a, and the inside thereof is a valve accommodating chamber. 18 includes a valve accommodating cylinder portion 14b and a flow path cylindrical portion 14c extending with a smaller inner diameter than the valve accommodating cylinder portion 14b. Also, as shown in FIGS. 3 and 4, the nozzle support member 14 is a part of the circumferential direction of the flow path cylinder part 14c, and generates a vortex that communicates with the inside of the flow path cylinder part 14c at a position separated by 180 °. It has two vortex generating portions 14d having chambers 19 inside, and nozzle support portions 14e (see FIG. 4) extending from the respective vortex generating portions 14d and supporting the nozzle body 15. As shown in FIG. 4, the vortex generating chamber 19 of the present embodiment is formed in a substantially conical shape, and generates vortices in the cleaning liquid flowing in from the flow path cylinder portion 14 c, so that the nozzle support portion 14 e side (nozzle body 15 Side)). In other words, the vortex generating chamber 19 is provided on the upstream side immediately before the nozzle body 15 to generate vortices in the cleaning liquid. Further, as shown in FIG. 4, the nozzle support portion 14e has a spherical concave portion 14f whose inner surface can hold the sphere so as to roll.

  As shown in FIGS. 4 and 5, the spherical concave portion 14f holds the spherical portion 15a of the nozzle body 15 in a rollable manner. The nozzle body 15 includes the spherical surface portion 15a having a spherical outer shape, and a chip housing portion 15b having a substantially rectangular parallelepiped space that penetrates the spherical surface portion 15a and opens to the outside. The nozzle tip 16 is accommodated and held. The nozzle chip 16 is formed to have a substantially rectangular parallelepiped outline, and is press-fitted from the external opening of the chip housing portion 15b and is housed and held in the chip housing portion 15b. The nozzle chip 16 is formed with an oscillation chamber constituting groove 16a (see FIG. 5) that constitutes the oscillation chamber 20 together with the inner surface (upper surface) of the chip accommodating portion 15b. The oscillation chamber 20 is formed in a shape (pattern) of a type having a pair of feedback flow paths on the left and right sides that feed back part of the introduced cleaning liquid upstream of the injection port 21 to the downstream side. Vibrate left and right (vehicle width direction). As a result, as schematically shown in FIG. 11, the cleaning liquid ejected from the ejection port 21 is oscillated left and right and is spread and diffused.

  The angle of the injection port 21, that is, the angle of the cleaning liquid to be injected can be adjusted by rolling the spherical portion 15a in the spherical concave portion 14f in a state where the nozzle body 15 is assembled. For example, one of the two nozzle bodies 15 has an angle set at a position corresponding to the low-beam headlamp light source 2 (see FIG. 1) in the headlamp cover 3, and the other is used for the high beam in the headlamp cover 3. An angle is set at a position corresponding to the headlamp light source (not shown).

  As shown in FIG. 2B, the headlamp cleaning device 6 is supported at one end by a lid member 12 provided at the tip of the cylinder member 11 and at the other end the extension portion 13b of the piston member 13. A compression coil spring 22 is provided that biases the piston member 13 in the direction of immersing the cylinder member 11 in the cylinder member 11 by biasing.

  Further, as shown in FIG. 3, the valve accommodating chamber 18 is pressed against the valve receiving portion 13f so as to close the valve opening 13e, and the pressure in the internal flow path 13d is equal to or higher than a preset value (piston A valve body 23 is provided that communicates the internal flow path 13d with the injection port 21 when the pressure is higher than the pressure in the internal flow path 13d necessary for extending the member 13 from the cylinder member 11.

  The valve body 23 is urged toward the valve receiving portion 13f by a compression coil spring 24 as a valve urging member, and the compression coil spring 24 is integrally formed with the piston member 13 in which the valve receiving portion 13f is formed. It is supported by the force support portion 13g.

  More specifically, as shown in FIGS. 6 to 8, in this embodiment, a standing portion 13 h extending along the longitudinal direction of the piston member 13 is formed outside the valve receiving portion 13 f of the piston member 13. . A pair of standing portions 13h of the present embodiment are formed at intervals of 180 ° on the outside of the valve receiving portion 13f with the valve opening 13e as the center. The biasing support portion 13g extends from the tip of the standing portion 13h to a position facing the valve opening 13e, in other words, extends so as to connect the tips of the pair of standing portions 13h. ing. A convex portion 13j to which the compression coil spring 24 is externally fitted is formed on the surface of the biasing support portion 13g that faces the valve opening 13e, and the compression coil spring 24 is attached to the convex portion 13j while having one end attached thereto. The other end side is supported by the urging support portion 13g so as to urge the valve body 23 toward the valve receiving portion 13f along the longitudinal direction. The valve body 23 is made of a rubber material, is formed in a substantially square plate shape, and a convex portion 23a on which the compression coil spring 24 is fitted is formed on a surface facing the biasing support portion 13g.

  Further, a guide portion 13k that guides the movement of the valve body 23 along the longitudinal direction of the piston member 13 is formed in the standing portion 13h. Specifically, as shown in FIG. 8, first, a guide groove 23 b is formed in the center of each side of the valve body 23 so as to be recessed in an arc shape when viewed from the longitudinal direction of the piston member 13. And the guide part 13k is formed in the center in the inner surface of the standing part 13h so as to project in an arc shape that fits in the guide groove 23b, and in the longitudinal direction of the piston member 13 (in the direction orthogonal to the paper surface in FIG. 8). It is formed long along. Accordingly, the valve body 23 is allowed to move along the longitudinal direction of the piston member 13 while being prevented from being displaced in a direction orthogonal to the longitudinal direction of the piston member 13. Further, in this embodiment, since the guide groove 23b is formed on all four sides of the valve body 23, it is not necessary to rotate the guide portion 13k and align it at the time of assembly. Matching is easy. Further, the two guide grooves 23b into which the guide portion 13k cannot be fitted become a part of the flow path through which the cleaning liquid flows, and the cross-sectional area of the flow path increases, so that the cleaning liquid easily flows.

  With the above configuration, the valve body 23 is moved against the urging force of the compression coil spring 24 when the pressure in the internal flow path 13d becomes equal to or higher than a preset value (see FIGS. 9B and 10). The valve opening 13e is opened, and the internal flow path 13d communicates with the injection port 21.

Next, the operation of the headlamp cleaning device 6 configured as described above will be described.
For example, when an operation for cleaning the headlamp cover 3 is performed, such as when a washer switch provided in the driver's seat is operated, the electric pump is driven, and the cleaning liquid is pistoned through the hose H and the cleaning liquid introducing portion 11a. It is fed to the internal flow path 13d of the member 13.

  Then, as shown in FIG. 9A, first, the valve body 23 closes the valve opening 13e, so that the piston member 13 resists the urging force of the compression coil spring 22 by the pressure of the cleaning liquid. The front end (the central opening 12a of the lid member 12) protrudes, and the injection port 21 (see FIG. 4) protrudes from the front bumper 4 so as to extend toward the headlamp cover 3.

  Then, as shown in FIG. 9B and FIG. 10, when the pressure in the internal flow path 13d increases (becomes a preset value or more) as it cannot be further extended, the valve element 23 is compressed coil. The valve is moved against the urging force of the spring 24, the valve opening 13e is opened, the cleaning liquid is fed from the internal flow path 13d to the ejection port 21, and the cleaning liquid is ejected from the ejection port 21 to the headlamp cover 3. .

  At this time, when the cleaning liquid passes through the vortex generating chamber 19, a vortex is generated, and the centrifugal force causes the vortex to flow to the oscillation chamber 20 while applying a force to the outside (the direction away from the flow axis). When passing through the chamber 20, it is oscillated largely to the left and right and injected from the injection port 21. As a result, the cleaning range Z2 (refer to the two-dot chain line in FIG. 1) including the desired cleaning range Z1 (refer to the one-dot chain line in FIG. 1) that is wide in the left-right direction and somewhat larger in the vertical direction is cleaned. Is done.

Next, the characteristic effects of the above embodiment will be described below.
(1) Since the biasing support portion 13g that supports the compression coil spring 24 is integrally formed with the valve receiving portion 13f in which the valve opening 13e is formed, the compression coil spring is applied to the biasing support portion 13g of the integrally molded product. The valve body 23 can be pressed and contacted with the valve receiving portion 13f so as to close the valve opening 13e while supporting the valve 24. Therefore, the pressing contact state of the valve body 23 can be determined without depending on a separate member. For example, all the members (the nozzle support member 14 and the like) are not assembled and the valve body 23 is Whether or not the pressing contact state of the valve body 23 is normal in the exposed state can be confirmed. Specifically, for example, when the urging support portion is formed on the nozzle support member 14 of the nozzle member 5, the pressing contact state of the valve body 23 is not determined until the nozzle support member 14 is assembled. Even if the pressure contact state becomes abnormal, such as when the valve body 23 is tilted during assembly, it may be difficult to confirm the state from the outside. On the other hand, in the above configuration, the pressure contact state of the valve body 23 is determined before the nozzle support member 14 is assembled (before the valve body 23 and the like are covered), and the pressure contact state is normal. It can be easily confirmed from the outside (visually or the like). Therefore, an abnormality can be easily confirmed at an early stage at the time of manufacture, for example, the defect rate after assembling all parts can be reduced, and the cost of the headlamp cleaning device 6 can be reduced. Is possible.

  (2) A standing portion 13h is formed outside the valve receiving portion 13f along the longitudinal direction of the piston member 13, and the urging support portion 13g faces the valve opening 13e from the tip of the standing portion 13h. The valve urging member that is formed extending in the direction and that urges the valve body 23 is supported by the urging support portion 13g at one end side and the compression coil spring 24 that urges the valve body 23 along the longitudinal direction at the other end side. It is said. Thus, the biasing support portion 13g is opposed to the valve opening 13e, and the valve body 23 is stably (straightly) on the valve opening 13e side by the compression coil spring 24 supported by the biasing support portion 13g. Can be energized. Therefore, the valve body 23 can be stably pressed into contact with the valve receiving portion 13f (so as to close the valve opening 13e), and in a state where the pressure in the internal flow path 13d has not reached a preset value, It is possible to stably prevent the leakage of the cleaning liquid.

  (3) A pair of standing portions 13h are formed at intervals of 180 ° on the outside of the valve receiving portion 13f centered on the valve opening 13e. Therefore, for example, as compared with a configuration in which only one standing portion 13h is formed, the posture of the biasing support portion 13g formed extending from the tip of the standing portion 13h to a position facing the valve opening 13e is stabilized. The valve body 23 can be urged more stably (straightly) toward the valve opening 13e.

  (4) Since the standing portion 13h is provided with a guide portion 13k for guiding the movement of the valve body 23 along the longitudinal direction of the piston member 13, for example, the valve body 23 is shifted in a direction perpendicular to the longitudinal direction. Is prevented.

(5) Since the valve receiving portion 13f is integrally formed with the piston member 13, it is possible to reduce the number of parts compared to a separate member.
The above embodiment may be modified as follows.

  In the above embodiment, the valve urging member is the compression coil spring 24, and the urging support portion 13g is formed to extend from the tip of the standing portion 13h to a position facing the valve opening 13e. The valve urging member may be a valve urging member other than the compression coil spring 24, and the urging support part that supports the valve urging member may be changed to another configuration if it is integrally formed with the valve receiving part. Also good.

  For example, it may be changed as shown in FIGS. In this example, a valve cylindrical portion 13m extending along the longitudinal direction of the piston member 13 and closing the tip is formed at the tip portion of the piston member 13. The valve tubular portion 13m is formed with a valve opening 13n which is an opening penetrating to the side (in the radial direction), and the periphery of the valve tubular portion 13m outside the valve opening 13n is a valve. It is set as the receiving part 13p. In this example, a pair of valve openings 13n are formed at intervals of 180 ° in the valve tubular portion 13m. Further, a support groove 13q as an urging support portion is formed in the valve tubular portion 13m. The support groove 13q is recessed so as to divide the distal end surface of the valve tubular portion 13m. The support groove 13q is supported by inserting the proximal end portion 32a, and the distal end portion attaches the valve body 31 from the lateral outer side to the inner side (that is, radially inward) of the valve tubular portion 13m. A plate spring 32 is installed. The leaf spring 32 is formed in a flat plate shape with a base end portion 32a fitted into the support groove 13q, and the portions protruding from both sides of the support groove 13q extend so as to be wound around the valve tubular portion 13m, respectively. The valve body 31 made of a rubber material provided in the portion is urged radially inward (to the valve opening 13n side).

  Further, in this example (see FIGS. 12 to 16), the nozzle support member 14 accommodates the valve tubular portion 13m inside the valve accommodating tubular portion 14b and the flow passage tubular portion 14c (the piston member). 13) and a restricting portion 14 g that restricts movement of the base end portion 32 a of the leaf spring 32 from the support groove 13 q in the assembled state. The restricting portion 14g in this example is formed to extend from an upper wall connecting the upper portions of the two vortex generating portions 14d to a position where the restricting portion 14g comes into contact with the distal end surface of the valve tubular portion 13m.

  Even in this case, when the pressure in the internal flow path 13d increases (becomes a preset value or more), the valve element 31 is moved radially outward against the urging force of the leaf spring 32 (see FIG. 16). ), The valve opening 13n is opened, the cleaning liquid is fed from the internal flow path 13d to the ejection port 21, and the cleaning liquid is ejected from the ejection port 21 to the headlamp cover 3.

  Since the support groove 13q for supporting the leaf spring 32 is integrally formed with the valve receiving portion 13p in which the valve opening 13n is formed, the valve body 31 and the like are covered before the nozzle support member 14 is assembled. Before), the pressing contact state of the valve body 31 is determined, and whether or not the pressing contact state is normal can be easily confirmed from the outside (by visual observation or the like). Therefore, an abnormality can be easily confirmed at an early stage at the time of manufacture, for example, the defect rate after assembling all parts can be reduced, and the cost of the headlamp cleaning device 6 can be reduced. Is possible.

  In addition, the nozzle support member 14 is assembled so as to accommodate the valve tubular portion 13m, and in the assembled state, a restriction portion that restricts the movement of the base end portion 32a of the leaf spring 32 in the removal direction from the support groove 13q. Since it has 14g, it is prevented that the base end part 32a of the leaf | plate spring 32 slips out from the support groove 13q after manufacture.

  In the above embodiment, the standing portions 13h are formed as a pair at intervals of 180 ° on the outside of the valve receiving portion 13f with the valve opening 13e as the center. However, the present invention is not limited to this. A pair may be formed, or the number may be one or three or more.

  -In above-mentioned embodiment, although the guide part 13k which guides the movement of the valve body 23 along the longitudinal direction of the piston member 13 was provided in the standing part 13h, it is not limited to this, The guide part 13k is provided. It is good also as a structure which is not provided.

  In the above embodiment, the valve receiving portion 13f is integrally formed with the piston member 13, but is not limited thereto, and may be a separate body. In this case, as a matter of course, the urging support portion for supporting the valve urging member is integrally formed on the member in which the valve receiving portion is formed.

  In the above embodiment, the cleaning liquid ejected from the ejection port 21 is configured to be diffusely sprayed (that is, the structure having the oscillation chamber 20). However, the present invention is not limited to this. It may be changed to a configuration in which the cleaning liquid is ejected in another ejection pattern such as jet ejection. Of course, the cleaning liquid may be ejected from the two ejection ports in different ejection patterns.

  In the above embodiment, the nozzle member 5 (nozzle portion) is configured such that the angle of the injection port 21 can be adjusted. However, the present invention is not limited to this, and the configuration in which the angle of the injection port 21 cannot be adjusted after assembly. You may change to

  In the above embodiment, the nozzle member 5 (nozzle part) has the vortex generating chamber 19 that generates vortices in the cleaning liquid, but the configuration is not limited to this and the vortex generating chamber 19 is not changed. May be.

  In the above-described embodiment, the nozzle member 5 (nozzle portion) having two ejection ports 21 is used. However, the present invention is not limited to this, and a nozzle member (nozzle portion) having only one ejection port may be used. You may change into the nozzle member (nozzle part) provided with three or more.

  In the above-described embodiment, the headlamp cleaning device 6 that cleans the position corresponding to the headlamp light source 2 in the headlamp cover 3 as a cleaning target is embodied, but is not limited to this, for example, an in-vehicle camera or a millimeter wave radar Further, the present invention may be embodied in a cleaning device that jets cleaning liquid using an external transmission / reception surface such as a corner sensor as a cleaning target.

The technical idea that can be grasped from the above embodiment and other examples will be described below together with the effects thereof.
(B) pre-Symbol erected portion shall be the characterized in that a pair formed by 180 ° intervals to the outside of the valve receiving unit around the opening for the valve.

  According to this configuration, a pair of standing portions are formed at intervals of 180 ° on the outside of the valve receiving portion with the valve opening as the center. For example, compared to a configuration in which only one standing portion is formed. The posture of the biasing support portion formed by extending from the tip of the standing portion to the position facing the valve opening is stabilized, and the valve body is biased more stably (straightly) to the valve opening side. Can be made.

(B) before SL nozzle unit, which are assembled so as to accommodate the valve tubular portion, restricting the moving direction of the exit from the support groove of the base end portion of the leaf spring in a state of being assembled to have a regulating portion for you characterized.

  According to this configuration, the nozzle portion is assembled so as to accommodate the valve tubular portion, and in the assembled state, the movement of the base end portion of the leaf spring in the removal direction from the support groove is restricted. Therefore, the base end portion of the leaf spring is prevented from coming out of the support groove after manufacturing.

(C) before SL valve receiving portion, characterized by being integrally molded with the piston portion.
According to this configuration, since the valve receiving part is integrally formed with the piston part, it is possible to reduce the number of parts compared to a separate part.

  6 ... Headlamp cleaning device (cleaning device), 11 ... Cylinder member, 13 ... Piston member (piston part), 13d ... Internal flow path, 13e, 13n ... Valve opening, 13f, 13p ... Valve receiving part, 13g ... 13h ... guide part, 13m ... cylindrical part for valve, 13q ... support groove (biasing support part), 14 ... nozzle support member constituting a part of the nozzle part, 15 ... Nozzle body constituting a part of the nozzle part, 16 ... Nozzle tip constituting a part of the nozzle part, 21 ... Injection port, 23, 31 ... Valve body, 24 ... Compression coil spring (valve urging member), 32 ... Leaf spring (valve urging member).

Claims (3)

A long cylindrical cylinder member;
An elongated cylindrical piston portion provided so as to be able to appear and retract with respect to the tip of the cylinder member;
A valve receiving portion provided on the distal end side of the piston portion and formed with a valve opening communicating with the internal flow path of the piston portion;
A nozzle portion having an injection port for injecting the cleaning liquid fed through the internal flow path and the valve opening to the object to be cleaned;
A valve body that is in pressure contact with the valve receiving portion so as to close the valve opening, and that communicates the internal flow path with the injection port when the pressure in the internal flow path is equal to or higher than a preset value;
A cleaning device including a valve urging member that urges the valve body toward the valve receiving portion;
The urging support portion that supports the valve urging member is integrally formed with the valve receiving portion ,
The valve opening is an opening penetrating along the longitudinal direction of the piston portion,
A standing part is formed on the outside of the valve receiving part along the longitudinal direction of the piston part,
The biasing support portion is formed to extend from a tip of the standing portion to a position facing the valve opening,
One of the valve urging members is supported by the urging support portion, and the other end is a compression coil spring that urges the valve body along the longitudinal direction . The cleaning device according to claim 1 ,
The cleaning apparatus according to claim 1, wherein the standing portion is provided with a guide portion that guides the movement of the valve body along the longitudinal direction. A long cylindrical cylinder member;
An elongated cylindrical piston portion provided so as to be able to appear and retract with respect to the tip of the cylinder member;
A valve receiving portion provided on the distal end side of the piston portion and formed with a valve opening communicating with the internal flow path of the piston portion;
A nozzle portion having an injection port for injecting the cleaning liquid fed through the internal flow path and the valve opening to the object to be cleaned;
A valve body that is in pressure contact with the valve receiving portion so as to close the valve opening, and that communicates the internal flow path with the injection port when the pressure in the internal flow path is equal to or higher than a preset value;
A valve urging member that urges the valve body toward the valve receiving portion;
A cleaning device comprising:
The urging support portion that supports the valve urging member is integrally formed with the valve receiving portion,
The valve opening is an opening extending along the longitudinal direction of the piston portion and penetrating to the side of the valve tubular portion whose tip is closed,
The urging support portion is a support groove formed in the tubular portion for a valve,
The valve biasing member is supported by a base end portion being inserted into the support groove, and a leaf spring that biases the valve body from the lateral outer side to the inner side of the valve tubular portion. The cleaning apparatus characterized by being made.