JPS641162Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a cleaning liquid discharge nozzle for a vehicle.

As shown in FIG.
It is now possible to spray Some systems are capable of spraying cleaning fluid outside the windshield W, for example onto the headlights (not shown), but all have the same mechanism and operate in response to the driver's operating switch from the cleaning fluid tank T. Cleaning liquid is piped (made of rubber) by electric pump P.
Appropriate pressure is fed into L, and after branching as appropriate, it is discharged from a nozzle N toward a headlight or a windshield W.

However, the conventional nozzle N used for this type of application
However, the installation work is relatively easy, as the discharge direction cannot be changed, or the installation work to a panel part such as the cowl panel C of the vehicle is troublesome, and the number of parts is large. However, in order to ensure sufficient thickness for the connection to the piping, the installation hole drilled in the panel had to be made with a large diameter.

In view of the above, this proposal requires the minimum number of parts, and the mounting holes drilled in the panel need only be of small diameter.
Furthermore, it is an object of the present invention to provide a nozzle device that can be attached to the nozzle by a one-touch operation from one side and has selectivity in the discharge direction.

The present invention will be described below with reference to FIGS. 2 to 4.

The nozzle of the present invention consists of two parts, a nozzle body 1 and a spherical member 2, each of which is an injection molded plastic product.

The nozzle body 1 has a head 3, and a trunk 5 hangs down from a part of the lower surface 4 of the head 3. A flow path 6 is bored from the tip of the trunk 5 to the inside of the head 3, which is open at the tip of the trunk.

On the other hand, the head 3 is provided with a space 7 that opens on one side of the head and communicates with the flow path 6. In this case, this space 7 and the flow path 6 are approximately perpendicular to each other (both The intersection angle α is 90°). This space 7 is a housing space for the spherical member 2, and its inner circumferential surface 8 forms a part of a spherical surface. The spherical member 2 has an outer surface 9 with a spherical diameter that is the same as or slightly larger than the spherical diameter of the inner circumferential surface 8 of the housing space 7, and therefore,
As shown in the second diagram, the arrow A is facing the accommodation space 7.
If it is forcefully pushed in the direction, it can enter the housing space 7 due to the elastic deformability of the material, and as shown in the third figure, in the thus assembled state, it can rotate within the housing space.

A diametrically extending orifice 10 is bored through this spherical member 2, so that the flow passage 6 in the nozzle body can communicate with the space outside the head via this orifice.

The trunk 5 of the nozzle body 1 has a mounting hole 12 drilled at a predetermined position of the panel 11 to which the nozzle is to be mounted.
are provided with snap locking means 13 which can be attached by a simple pushing operation.

There are many known types of snap locking means that are inserted into the mounting hole 12 from the tip of the trunk 5 to prevent it from coming off by a snap action, and any of them may be used. Elastic piece 1 that extends diagonally upward from the outside part of the length of
A pair of elastic pieces 4 and 14 are provided, and locking step surfaces 15 and 15 that lock onto the edge of the mounting hole 12 are provided at the free ends of the elastic pieces 14 and 14, respectively.

Therefore, the present nozzle is inserted into the mounting hole 1 from the tip of the trunk 5.
As you insert it into 2, the elastic piece 1 will close to the edge of the mounting hole.
4 and 14 pass while being deflected inward in the radial direction as if approaching each other, but when the locking step surfaces 15 and 15 go beyond the bottom of the hole edge, they are restored by their own elastic restoring force, and due to this snap action. The locking step surfaces 15, 15 are hooked under the hole edge. Thereby, the nozzle and the panel are fixed by sandwiching the panel 11 between the locking step surfaces 15, 15 and the lower surface 4 of the head (FIG. 4).
In practice, if necessary, for example, an elastic (for example, rubber) washer 16 can be fitted between the panel and the lower surface of the head to improve the sealing performance, and this elastic force can be used to connect the engagement step surface 15 and the mounting hole. The contact force with the bottom of the hole edge can also be increased, which can be useful for stable installation of the nozzle.

Thus, the end of the cleaning liquid pipe L may be connected to the flow path 6 of the nozzle attached to the panel 11. For this purpose, a pipe connecting portion 17 having a convenient shape for connecting a pipe L made of rubber or the like is provided at the tip of the trunk 5. However, this connection part 17
The shape itself may be the same as the shape normally required for the pipe when connecting pipes to a rubber hose, and furthermore, for example, the band 18 can be used to connect the rubber pipe L and the connecting part 1.
No harm will be done by taking known considerations such as increasing the bonding force with 7.

With the above configuration, the cleaning liquid F sent through the pipe L flows into the internal flow path 6 of the nozzle body 1, and can be discharged after being increased in pressure by the orifice 10 of the spherical member 2, and the cleaning liquid F is discharged in the discharge direction. teeth,
By rotating the spherical member 2, a fairly large selection can be made.

In the case of this embodiment, the third
The discharge flow can be selectively directed over a fairly wide range, such as approximately 90° in the vertical direction as shown, and approximately 90° in the horizontal direction (not shown). On the other hand, if the rotation is made any further, communication between the orifice and the flow path can be cut off, and the discharge of the cleaning liquid can be stopped.

In particular, if the shape of the spherical member is unique, as seen in the spherical member 2 of the present invention, if the spherical member is rotated with one's fingers as described above (or even if it is normal) ), it is possible to reliably and easily know whether or not the orifice is in a position where cleaning liquid can be discharged, that is, whether or not the mouth of the orifice 10 is exposed, just by the touch of the finger.

The form of the spherical member peculiar to this invention is as clearly shown in FIGS. 2 and 3.
A portion of the spherical surface of the orifice 10 is truncated at a portion including the opening of the orifice 10, and a flat portion perpendicular to the axis of the orifice 10 is provided.

The reason why the above effect is produced in this way can be explained as follows.

When the spherical member literally has a spherical structure as a whole as in the past, when you put your finger etc. on the spherical member to rotate it, the size of the spherical member is extremely small, so the pad of the finger The spherical member is hidden underneath, making it generally impossible to see the opening of the orifice, or even worse, the orifice cannot be seen unless you look into it in an extremely unreasonable position. In contrast, if the structure is as proposed, a part of the spherical surface of the spherical member can be cut to include the opening of the orifice. Just by feeling the flat surface of the head with the pad of your finger, you can immediately know whether or not the orifice is exposed and its direction without having to look at it with your eyes.

Further, the spherical member can be rotated easily by using the boundary between the truncated plane and the spherical surface as a catch.

However, in some conventional devices, a nozzle is provided in the orifice opening portion that protrudes further outward than the spherical surface of the spherical member, and the presence of this nozzle makes it possible to know the position of the orifice opening by feeling it with a finger. .

However, for example, if this nozzle is made separately from the spherical member, the effort, time, and expense of creating the nozzle itself increases, and the work of assembling the nozzle and the spherical member is only small. This is extremely troublesome, and considering that this is a part for vehicles that is used in harsh environments for many years, the risk of failure such as the nozzle loosening or coming off increases.

On the other hand, even when the nozzle part is integrally injection molded with the spherical member using a suitable plastic, a considerably high level of technology is required to precisely manufacture the even smaller part of the small spherical member. This results in increased design and manufacturing effort and expense. Needless to say, it is best for such small parts to be as simple as possible.

As a result, it can be seen that the structure of the spherical member employed in the present invention is advantageous in this respect as well. This is because mold machining, which involves simply converting a part of a simple spherical shape into a planar shape, does not impose any burden on design or production, is extremely simple, and is easy to achieve accuracy.

Furthermore, whether the spherical member is integrally molded or made separately and then assembled, if there is a nozzle portion that protrudes outward beyond the spherical surface of the spherical member, the spherical member may be When pushing it into the housing space, be very careful and make sure that the nozzle faces outward.

If this were to be inserted in the wrong direction,
Because the nozzle part protrudes beyond the spherical surface, even if you try to correct the direction by rotating the spherical member until the nozzle is correctly facing outward, the protruding nozzle will hit the wall of the storage space. , such correction work cannot be undertaken.

On the other hand, if the spherical member 2 has a structure in which the spherical surface of the spherical member 2 is partially flattened, and the orifice opening position is specified and placed as in the present invention, the orientation of the orifice opening can be easily adjusted for the installation work of the spherical member 2. without worrying about this, simply place the spherical member 2 in the housing space 7.
It is possible to use an extremely simple procedure of pushing the orifice in, and then turning it with your fingers or the like as appropriate so that the opening of the orifice faces outward.

In addition, in the illustrated case, the accommodation space 7 of the spherical member 2 is made to be approximately orthogonal to the internal flow path 6, but this angle is arbitrary, and by changing this intersection angle α,
It is also possible to change the directional range of the orifice as a whole. If the spherical member 2 rotates too lightly, the predetermined discharge direction may be deviated due to vibrations while the vehicle is running, so the spherical diameter of the spherical member 2 and the accommodation space 7 In view of this point, it is desirable to consider the dimensional relationship of the spherical member a little more carefully in the design so that it is not too difficult for the user to rotate the spherical member with the tip of his or her finger.

In addition, in this embodiment, as particularly well shown in FIG. 4, the diameter of the trunk 5 is adjusted in two steps along its length in a cross section including the elastic pieces 14, 14 serving as snap locking members. I am changing it to

This is to ensure that the diameter of the pipe connection portion 17 has a sufficient thickness necessary for connection of the pipe, while making only the diameter of the attachment hole sufficiently small.

That is, the length from the base of the elastic pieces 14, 14 of the snap locking member to the head 3 is longer than the length extending from the base to the pipe connection part 17 at the tip. It has a narrow diameter in a cross section including the narrowed portion, and a space is created on both sides of the narrowed portion in which the elastic locking pieces 14, 14 can be bent during installation work.

Therefore, the diameter of the mounting hole 12 drilled in the panel is
While it is possible to make the diameter of the trunk 5 sufficiently smaller than when the trunk 5 has the same diameter from the bottom to the top, it is also possible to make the diameter of the trunk 5 smaller over the entire length of the trunk in order to reduce the diameter of the mounting hole. As a result, the diameter of the piping connection portion 17 can be ensured to have a sufficient thickness necessary for connecting the piping. Furthermore, the elastic pieces 14, 1
According to the above configuration, it is also possible to provide a simple circular hole with a minimum diameter that is such that the outer circumferential surface of the trunk in a portion other than the cross section including section 4 can fit along.

As described above, in addition to being able to change the cleaning liquid discharge direction to the desired direction, the nozzle can be installed in a predetermined position by a simple push-in operation, and the number of parts is only two, which has advantages in manufacturing and cost. have

[Brief explanation of the drawing]

Figure 1 is an explanatory diagram of the vehicle cleaning liquid discharge mechanism, Figure 2
The figure is an exploded longitudinal cross-sectional view of one embodiment of the nozzle of the present invention.
The figure is a longitudinal sectional view after assembly, and FIG. 4 is a front view. In the figure, 1 is a nozzle body, 2 is a spherical member, 3 is a head, 5 is a trunk, 6 is a flow path, 7 is a spherical member housing space, 10 is an orifice, 12 is a mounting hole, 13 is a snap locking means, It is.

Claims (1)

[Claims for Utility Model Registration] A washing liquid discharge nozzle for vehicles, which is made of plastic and has a nozzle body and a spherical member having an orifice diametrically penetrated; , hanging from the head;
A trunk to which a cleaning liquid pipe is connected to the tip, a flow passage bored from the tip of the trunk to the inside of the head, and one side of the head open to communicate with the flow passage while allowing the spherical member to rotate. a spherical member housing space having an inner circumferential surface into which the spherical member is fitted, and a snap locking means provided on the trunk and snap-locked to the edge of the nozzle mounting hole of the nozzle mounting panel; A washing liquid discharge nozzle for a vehicle, characterized in that a portion including an opening of the orifice is a plane perpendicular to the axis of the orifice by truncating a part of the spherical surface of the spherical member.