JPH0451881Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to an improvement of a nozzle for a headlamp cleaner that injects washing water for washing the headlamp of an automobile while the vehicle is running.

[Conventional technology]

Etched lamp cleaners have traditionally been used to clean mud, insects, etc. that adhere to the front of a car's headlights while the car is running, and restore the headlamp's light emitting performance.This type of headlamp cleaner sprays out high-pressure water. The structure is such that the nozzle case that houses and supports the nozzle is fixedly mounted on the bumper.
Washing water is supplied under pressure from a water storage tank arranged inside the vehicle body and connected via a piping system such as a tube. This piping system has a structure in which check valves are interposed at appropriate locations in order to improve the responsiveness of the jetting operation of the nozzle.

[Problem that the invention attempts to solve]

In a headlamp cleaner with such a structure, a predetermined injection start-up time is required from the start of rotation of the injection pump until the check valve reaches the opening pressure. is often located far away from the nozzle components, and it is necessary to compensate for the loss of cleaning water between the nozzle and check valve due to expansion of the piping system, evaporation of cleaning water from the nozzle, water leakage due to vibration, etc. Because there is
Furthermore, this method not only requires extra time, but also has the problem of being forced to waste washing water before it can be sprayed.

The present invention was devised in view of the above problems, and has a simple configuration, good injection response,
It is an object of the present invention to provide a nozzle for a headlamp cleaner that does not cause unnecessary outflow of washing water.

[Means for solving problems]

The nozzle for a headlamp cleaner according to the present invention has a nozzle case for a headlamp cleaner in which the base of the cleaning water injection nozzle is provided at the upper end, and a valve case is molded integrally or integrally with the lower end of the water conduit. Inside the valve case is a soft cylindrical valve that is energized to always close a valve seat formed on the inner periphery of the water outlet communicating with the water conduit side,
The gist of the present invention is to form a flow channel that communicates with the inside of the valve chamber from the side wall via the outer periphery of the side wall of the valve case.

[Effect]

That is, in the above configuration, the cleaning water is constantly supplied to the lower end of the nozzle that injects the cleaning water, and since there is no configuration gap between the nozzle and the check valve, an extra injection start-up time is required. First, as soon as the check valve reaches a predetermined opening pressure by driving the injection pump, the cleaning water can be injected from the cleaning water injection nozzle, and the limited cleaning water can be used effectively.

〔Example〕

Embodiments of the headlamp cleaner nozzle according to the present invention will be described below with reference to the drawings.

In the drawings, reference numeral 1 denotes a synthetic resin nozzle case in which a water conduit 3 is integrally molded continuously at the lower end of a short cylindrical portion 2, and the inner diameter of the short cylindrical portion 2 is equipped with a cleaning water pipe that sprays cleaning water from the upper end. A fitting recess 7 is formed into which the spherical base 6 of the cleaning water injection nozzle 5 with the injection port 4 opened is formed, and an outwardly curved curved edge 8 is formed at the upper edge of the short cylindrical portion 2. , the end edge of the curved edge portion 8 is positioned at the upper half of the short cylindrical portion 2 as a mounting flange level L. Further, a valve case 9 having a diameter slightly larger than that of the water conduit 3 is formed integrally or integrally with the lower end of the water conduit 3, and its upper surface is used as a locking edge 10, and the curved surface of the plate spring mounting plate 11 configured to engage with. Valve case 9
A soft cylindrical valve 15 is formed with a valve seat 13 on the inner periphery of the water inlet 12 communicating with the water conduit 3, and is always pressed toward the valve seat 13 by a spring 14 to close the water outlet 12. A water inlet 17 that communicates with the valve chamber 16 inside the valve case 9 is bored in the side wall of the valve case 9, and a flow channel 18 that communicates with the water inlet 17 from the outer periphery of the side wall. Configure. This valve case 9 is for fitting into the end of a piping system 19 such as a tube connected to a water storage tank (not shown) to form a waterway. The above retaining rib 20 is formed. Therefore,
The flow channel 18 is constructed by cutting out the rib 20 in the axial direction, and forms a channel between the rib 20 and the piping system 19.

The headlamp cleaner nozzle with the above configuration is
Insert the short tube part 2 from above into the mounting hole 22 drilled in the bumper 21 in front of the headlamp, and while the end edge of the curved edge part 8 is locked to the upper surface of the bumper 21, the lower surface of the bumper 21 and the bulb case 9 A plate-shaped mounting plate 11 is elastically inserted between the locking edges 10 formed on the upper surface, and the upper part of the plate protrudes from the curved edge 8 to the upper surface of the bumper 21 and is fixed thereto, and the valve case 9 is connected to the flushing water supply side. It is used by being connected to the output port of the pump via a piping system 19 such as a tube.

Therefore, when the injection pump is driven, piping system 1
9 flows into the valve chamber 16 of the valve case 9 through the flow channel 18, deforms the soft circular valve 15, and connects the water outlet 12.
A flow path is opened to the side, the water flows out into the nozzle case 1 via the water conduit 3, and is sprayed as high-pressure washing water from the washing water injection port 4 of the washing water injection nozzle 5. Further, when the injection pump is stopped, the water pressure in the valve chamber 16 is reduced, the valve 15 returns to its original state, and the water outlet 12 is closed and sealed by the biasing force of the spring 14. Therefore, the atmospheric pressure on the water outlet 12 side is cut off, and the water level in the valve chamber 16 is maintained. That is, since the level of the cleaning water is always maintained close to the cleaning water injection nozzle 5, the response to the drive of the injection pump is quick, preventing unnecessary outflow of cleaning water, and making it possible to spray effectively. becomes.

The gist of the nozzle for a headlamp cleaner according to the present invention is that, as described above, the valve case 9 is formed integrally or integrally with the lower end of the nozzle case 1 to form a nozzle with a check valve. The structure itself and the mounting structure on the vehicle body side are
The present invention is not limited to the above embodiments.

Furthermore, if the valve case 9 section is configured separately from the nozzle case 1 section, it can be used as a normal check valve, and can be connected in-line into the piping system as appropriate. .

[Effect of idea]

Since the head lamp cleaner nozzle according to the present invention is configured as described above, it not only has a simple structure but also does not require extra jet start-up time, so it has excellent jet response and eliminates wasted cleaning water. It has features such as being able to prevent leakage, and the practical effects after implementation of the present invention are extremely large.

[Brief explanation of drawings]

Fig. 1 is a front sectional view showing an installed state of an embodiment of the head lamp cleaner nozzle according to the present invention;
The figure is a front sectional view showing the same disassembled state. DESCRIPTION OF SYMBOLS 1...Nozzle case, 2...Short tube part, 3...Water pipe, 5...Washing water injection nozzle, 9...Valve case, 12...Water outlet, 13...Valve seat, 15...
Valve, 16... Valve chamber, 17... Water inlet, 18...
...Flow channel.

Claims (1)

[Scope of utility model registration request] In a nozzle case for a headlamp cleaner in which the base of a cleaning water injection nozzle is provided at the upper end, a valve case is formed integrally or integrally with the lower end of the water conduit, and the inside of the valve case communicates with the water conduit side. A soft cylindrical valve that is biased to always close a valve seat formed on the inner periphery of the water outlet is installed inside, and a flow channel is formed that communicates from the side wall into the valve chamber via the outer periphery of the side wall of the valve case. A nozzle for a headlamp cleaner characterized by: