JP2535393Y2 - Wet wiper valve - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wet wiper valve, and more particularly to a wet wiper used to spray water or the like on a glass surface by rotating together with a wiper used for wiping a glass surface of an automobile or the like. It relates to a valve.

[0002]

2. Description of the Related Art Conventionally, a wet wiper is provided on a glass surface of an automobile and is used for wiping water droplets and the like, and is rotated integrally with a wiper blade to spray water onto the glass surface. A known valve is shown in FIG.

That is, in the wet wiper valve 50 shown in FIG. 15, a link 63 of a link mechanism is attached to a lower end, and a wiper blade 52 is provided above a shaft 51 which is reciprocated and rotated. The wet wiper valve 50 is provided in the inserted state.

A lower portion of the wet wiper valve 50 is provided with a pivot holder 53 serving as a base. The upper portion is engaged with a projection 54 of the wiper blade 52 to reciprocate and rotate integrally. A casing 56 having a pair of nozzles 55, 55 for injecting water into the casing 51 is positioned. The casing 56 is prevented from moving with respect to the shaft 51 by a stop ring 64, and a wiper blade 52 mounted on the upper portion of the shaft 51.
Is fixed with a nut 65 screwed onto the upper part of the shaft 51.

[0005] A valve plate 57 is provided between the casing 56 and the pivot holder 53.
The O-ring 6 provided between the valve plate 57 and the casing 56 when the wiper blade 52 rotates.
6 and the pivot holder 5
Water is injected from the one nozzle 55 through the third hole 58, the hole 59 of the plate 57, and the hole 60 provided in the casing 56.

[0006] When the motor rotates only within a predetermined range,
Only the casing 56 is rotated so that another hole 60 provided in the casing 56 coincides with the hole 59 of the valve plate 57, whereby the hole 58 of the pivot holder 53, the hole 59 of the valve plate 57, and the other Water is jetted from the other nozzle 55 through the hole 60, and this is repeated so that water is jetted alternately from the nozzles 55 and 55.

Reference numeral 61 denotes a modified washer, and 62 denotes a wave washer, which is provided between the pivot holder 53 and the plate 57, and between the plate 57 and the casing 56.
To prevent the casing 56 from leaking water.
Is pressed.

However, in the above configuration, the casing 56 rotated by the wiper blade 52 is used.
Since the O-ring 66 is used as a means for rotating the O-ring 66, the O-ring 66 is required separately from the valve plate 57, so that the number of parts is increased, and the work of mounting the O-ring 66 is required, which makes assembly work complicated. Had the problem of becoming

An object of the present invention is to make it possible to co-rotate with a member rotated by a wiper blade and to make it relatively rotatable without using an O-ring separately, thereby reducing the number of parts. An object of the present invention is to provide a wet wiper valve capable of reducing the number of assembling steps and reducing the overall cost.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides, as a first invention, a rotation integrally with a wiper blade mounted on a shaft which can reciprocate within a predetermined range. A wet wiper valve configured to switch nozzles located on both sides of the wiper blade to inject water, the wet wiper valve having a double cylindrical shape, and an upper portion between the two cylinders being closed. The shaft is inserted through the inner cylindrical portion, and further, a nozzle positioned on both sides of the wiper blade, and a lid member having a hole communicating with the nozzle opened on the upper inner surface, and an annular shape, It is installed in the lower part of the member in the inserted state,
Furthermore, a base formed with a flow path from the lower surface to the upper surface,
A rotating member provided on an upper portion of the base inside the lid member, the rotating member being rotatable within a predetermined range with respect to the lid member, and A valve plate that selectively opens and closes a hole; and a switching plate that can be engaged with the base within a range smaller than the range of rotation of the shaft. The shaft rotates the lid member. In this case, the rotating member also rotates together to open a hole in the front in the rotating direction, and when approaching the end of the rotating region, the switching plate engages with the base and the rotating member cooperates. The wet wiper valve is characterized in that it stops rotating and the valve plate switches the hole.

As a second invention including the first invention, a recess having a central portion formed as a projection is formed in the lid member, and a recess provided in the lid member is formed in the valve plate. A resilient portion is formed, and the resilient portion of the valve plate is rotatable over the protruding portion within the range of the concave portion of the lid member, and the valve plate is configured to be rotatable when it comes into contact with an end surface of the concave portion. The wet wiper valve is configured to rotate together with the member.

As a third invention including the first invention, a wet wiper valve is formed in which a hole is formed at a tip end of a resilient portion of the valve plate so as to have elasticity. It is.

As a fourth invention including the first invention, a washer is provided on an upper portion of the base, and the lower surface of the switching plate abuts on the washer so that the rotating member can slide easily through the base. This constitutes a wet wiper valve.

[0014]

[Function] This invention adopts the above-mentioned means,
When the wiper blade reciprocates, the lid member having the nozzle rotates integrally with the base fixed to the body or the like of the automobile, and at this time, the pivot member also integrally rotates.

The resilient portion of the valve plate constituting the rotating member is located in the concave portion of the lid member provided with the concave portion having the central portion serving as a protruding portion. When they are in contact with each other, they rotate together, and one of the nozzles is opened to spray water from the base channel.

Also, when the end of the rotation is approached, the switching plate engages with the base, so that the valve plate also stops rotating together with the lid member. Then, in this case, the resilient portion rotates so as to ride over the protrusion and abut on the other end surface of the concave portion, thereby closing one nozzle and opening the other nozzle, that is, switching the nozzle. This is repeated when the end of the rotation of the lid member is approached.

The resilient portion of the valve plate can be easily deformed when going over the central portion of the concave portion, and returns to its original state when in contact with the end surface of the concave portion.
It is designed to co-rotate with the lid member.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention shown in the drawings will be described below. FIG. 1 shows a wet wiper valve according to the present invention. FIG. 1 is a plan view, FIG. 2 is a longitudinal sectional view, and FIG. 3 is a bottom view. The shaft 2 that is reciprocated by the shaft 2 is disposed with the shaft 2 inserted therethrough.

The wet wiper valve 1 has a base 3 fixed to an automobile or the like by recesses 3a, 3a provided at two opposing lower surfaces, and is provided on the upper surface of the base 3 so as to be rotatable. The rotating member 4 and the rotating member 4
And the base 3 and two nozzles 5
a and 5b.

The base 3 has a central hole, and an inflow nozzle 9 hangs down on the lower surface, and the nozzle 9 opens on the upper surface to form a flow path C. The recess 10 is concentric with the hole, and a part of the recess is extended outward to form a locking recess 11, and a groove is formed at the center of the inner peripheral surface and at the top of the outer peripheral surface. K in groove
The gaskets 12 and 13 are housed.

The rotating member 4 is composed of two members which are vertically positioned and can be integrally rotated by a sliding friction force.

That is, one member is a switching plate 14, which is formed as shown in detail in FIGS.
At one place on the peripheral surface, an annular surface having a projection 14a engageable with the end surface of the locking concave portion 11 provided in the concave portion 10 of the base 3 is formed, and an inner surface of a hole 14b provided at the center is formed. It has a wavy shape in the radial direction, and is slidably disposed on an upper surface of an annular washer 16 provided in the concave portion 10 of the base 3.

The other member is a valve plate 17 which is resiliently combined with the switching plate 14. As shown in detail in FIGS. 9 to 11, an arc-shaped member is provided on the upper surface of the cylindrical portion 17a. Thin seal part 17b
And on the opposite side of the seal portion 17b,
A resilient portion 17c that generates resiliency by a hole provided at the tip end
Are integrally formed.

The seal portion 17b of the valve plate 17 has a predetermined distance between the conductive holes 17a.
d and 17e are provided.

As shown in detail in FIGS. 7 and 8, the lid member 6 has a cylindrical shape with its upper end closed, and has a double cylindrical shape with a cylindrical portion 6a integrally provided in the upper central portion. ,
The cylindrical portion 6a is large enough to be located inside the cylindrical portion 17a of the valve plate 17 of the rotating member 4.

Further, holes 18a and 18b communicating with the nozzles 5a and 5b are opened on the lower surface of the closed upper portion, and a resilient portion 17c of the valve plate 17 is located on a side opposite to the holes 18a and 18b. A concave portion 19 is formed, and a convex portion 20 is formed in the concave portion 19 so that a central portion on an outer peripheral side thereof protrudes inward.

And when assembling the above,
First, the valve plate 17 is inserted into the lid member 6 shown in FIGS. 7 and 8 so that the resilient portion 17c thereof faces upward so that the cylindrical portion 17a fits the cylindrical portion 6a of the lid member 6. .

Then, the resilient portion 17c of the valve plate 17 is located on one side of the concave portion 19 of the cover member 6 with the protrusion 20 as a boundary. At this time, the seal portion 17b of the valve plate 17 is Both nozzles 5a, 5 formed on the member 6
While covering the holes 18a and 18b communicating with the hole b, one conductive hole 17e formed in the seal portion 17b is in a state of communicating with the hole 18a (see FIG. 4).

Further, the cylindrical portion 1 of the valve plate 17
The hole 14b of the switching plate 14 is fitted to 7a. Note that the valve plate 17 may be inserted into the cylindrical portion 6a of the lid member 6 in a state where the switching plate 14 is fitted on the cylindrical portion 17a of the valve plate 17 in advance.

Further, inside the cover member 6, a base 3 having K packings 12, 13 mounted in grooves formed on the inner and outer peripheral surfaces.
Is inserted, the stopper 21 is positioned on the lower surface of the cylindrical portion 6a of the lid member 6, and the cylindrical portion 6a of the lid member 6 and the stopper 21 are integrally fixed to complete the assembly.

A concave portion 3 provided on the lower surface of the base 3
a, 3a are fixed, for example, with a projection or the like provided on the body of the automobile, and the shaft 2 rotated by a link mechanism (not shown) is inserted into the cylindrical portion 6a of the lid member 6, and the upper end of the shaft 2 The wiper blade is fixed to the two nozzles 5 of the lid member.
a and 5b are located on both sides of the wiper blade.

The operation of the wet wiper valve according to the present invention assembled as described above will be described. First, when the shaft 2 reciprocates, the wiper blade provided at the upper end thereof also integrally rotates. At this time, the lid member 6 also integrally rotates by the engaging portion 6b at the upper end.

At this time, the valve plate 17 in which the resilient portion 17c is located on one side of the inside of the concave portion 19 provided on the lower surface of the upper portion of the lid member 6 with the protrusion 20 as a boundary, is also integrated. Therefore, the switching plate 14 which is press-fitted into the valve plate 17 in a resilient state also rotates integrally.

That is, first, as shown in FIG. 4, when the wiper blade is located at one end of the rotation area,
A conduction hole 17d in a seal portion 17b of the valve plate 17,
17e is a hole 18d on the front side in the rotational direction of the hole 18e.
a, the hole 18a is open.

When the wiper blade rotates,
In this state, the lid member 6 and the rotating member 4 composed of the valve plate 17 and the switching plate 14 are provided with a resilient portion on one side of the recess 19 of the lid member 6 bordering the projection 20 as described above. When the valve plate 17 on which 17c is located rotates together, it rotates integrally. Therefore, at this time, the water supplied via the nozzle 9 is jetted from the nozzle 5a on the front side in the rotation direction.

In this case, the thin film-like portions of the valve plate 17 are provided at the portions where the holes 18a and 18b communicating with the nozzles 5a and 5b provided on the lid member 6 are provided, that is, at the seal portions A and B. The seal portion 17b abuts, and
The water pressure supplied through the nozzle 9 (1 to 3 kg / c
m ₂ ), the holes 18 a matching the conductive holes 17 d of the seal portion 17 b of the valve plate 17
Is surely ejected only from the nozzle 5a corresponding to.

When approaching the end of the rotation area, the locking portion 14a of the switching plate 14 comes into contact with the other end surface of the locking recess 11 formed on the upper surface of the base 3, and further rotation is performed. The valve plate 17, which is blocked and resiliently press-fits into the hole 14 b of the switching plate 14, also stops rotating together with the lid member 6. At this time, since the rotation of the wiper blade has not reached the end yet, the wiper blade further rotates and the lid member 6 also rotates integrally, and therefore, the valve plate 17 moves within the concave portion 19 of the lid member 6. Will do.

That is, the valve plate 17, in which the resilient portion 17 c is located on one side of the inside of the concave portion 19 of the lid member 6 at the boundary of the protrusion 20, is prevented from rotating by the switching plate 14. Therefore, the spring 17
c, the cover member 6 is moved, and as a result, the resilient portion 17c is located on one side of the inside of the concave portion 19 of the cover member 6 with the protrusion 20 as a boundary. 17 is relative to the lid member 6 such that the resilient portion 17c is deformed and rides over the projection 20 inside the concave portion 19 of the lid member 6 and is located on the other side with the projection 20 as a boundary. To rotate.

This state is shown in FIG. 6, in which the valve plate 17 initially rotating together with the lid member 6 in the state shown in FIG. Will be stopped, so the spring unit 1
7c is displaced (b) to get over the projection 20 of the concave portion 19, and thereafter, the resilient portion 17c is located on the opposite side of the concave portion 19 with respect to the projection 20. To the state shown in FIG.

As a result, among the conductive holes 17d and 17e of the seal portion 17b of the valve plate 17, the conductive hole 17d on the front side in the rotation direction does not coincide with the hole 18a, and
The injection of water from the nozzle 5a corresponding to a is stopped, and the conduction hole 17e on the rear side in the rotation direction is
And injection of water from the corresponding nozzle 5b is started.

Then, after reaching the end of the rotation area, rotation in the opposite direction starts, so that water is jetted from the nozzle 5b on the front side in the rotation direction of the wiper blade. As you approach the end of the turn in the direction,
In the same manner as described above, the resilient portion 17c of the valve plate 17 is moved
9, the seal portion 17b reverses the opening and closing of the holes 18a and 18b, and this is repeated when the end of the rotation range is approached.

Accordingly, the water flows out from the nozzle on the front side in the rotation direction, and at the end of the rotation range, the water stops flowing out from the nozzle and the water flows out from the other nozzle. FIG. 14 shows the relationship between the moving direction and the nozzle that discharges water.

When the rotation area of the wiper blade becomes large due to some trouble, the rotation of the switching plate 14 is controlled by the protrusions 14a provided on the engagement portion 11 of the recess 10 of the base 3. When the cylindrical portion 17a is press-fitted into the hole 14b of the switching plate 14, the valve plate 17 which has been integrally rotated comes into contact with the end face of the concave portion 19 of the lid member 6. The rotation of the cylindrical portion 17a of the valve plate 17 with respect to the hole 14b of the switching plate 14 can reliably prevent each member from being damaged.

[0044]

According to the present invention, as described above, the resilient portion of the valve plate can move in the concave portion of the lid member and contact the end surface.
That is, by making it possible to switch to both sides bordering the projection provided in the center of the recess, when located on one end face side or the other end face side so as to co-rotate with the lid member, The rotating member formed together with the switching plate can rotate together, and at the time of this rotating, water can be sprayed from a nozzle on the front side in the rotating direction of the lid member.

Also, when the switching plate is engaged with the base and stops rotating, that is, when the end of the rotation region of the lid member is approached, the valve plate also rotates, that is, stops rotating together with the lid member. Thus, the nozzle can be switched.

When the valve plate stops rotating together, the resilient portion of the valve plate gets over the projection of the concave portion, but the resilient portion is deformable and does not suffer damage.

Therefore, unlike the conventional valve plate, co-rotation with respect to the lid member and co-rotation with respect to the lid member with only the valve plate without using an O-ring separately to allow relative rotation, and relative rotation. This has the effect of reducing the number of parts, assembling man-hours, and reducing costs.

[Brief description of the drawings]

FIG. 1 is a plan view showing a wet wiper valve according to the present invention.

FIG. 2 is a longitudinal sectional view of a wet wiper valve.

FIG. 3 is a bottom view of the wet wiper valve.

FIG. 4 is a schematic view taken along line XX of FIG. 2;

FIG. 5 is a schematic view taken along line YY of FIG. 2;

FIGS. 6A, 6B, and 6C are schematic diagrams illustrating a state of movement of a resilient portion of a valve plate with respect to a lid member.

FIG. 7 is a schematic vertical sectional view of a lid member.

FIG. 8 is a schematic bottom view of the lid member.

FIG. 9 is a plan view of a valve plate.

FIG. 10 is a front view of a valve plate.

FIG. 11 is a bottom view of the valve plate.

FIG. 12 is a plan view of a switching plate.

FIG. 13 is a schematic perspective view of a switching plate.

FIG. 14 is a schematic diagram showing a relationship between a rotation state and ejection of a nozzle.

FIG. 15 is a schematic sectional view showing a conventional wet wiper valve.

[Explanation of symbols]

 1, 50 wet wiper valve 2, 51 shaft 3 base 3a, 10, 19 recess 4 rotating member 5a, 5b, 9, 55 nozzle 6 cover member 6a, 17a ... Cylinder 6a ... Locking portion 11 ... Locking recess 12,13 ... K packing 14 ... Switching plate 14a, 20 ... Protrusion 14b, 18a, 18b, 58,59,60 ... Hole 16 Washer 17, 57 Valve plate 17b, A, B Seal part 17c Resilient part 17d, 17e Conductive hole 21 Stopper C Flow path 52 Wiper blade 53 Pipot holder 54 Projection 56 Casing 61 Deformed washer 62 Wave washer 63 Link 64 Stop ring 65 Nut 66 O-ring

Claims (4)

(57) [Scope of request for utility model registration] A shaft (2) capable of reciprocating rotation within a predetermined range.
The nozzle (5) which rotates integrally with the wiper blade attached to the
a, 5b) is a wet wiper valve (1) in which water is sprayed by switching the wet wiper valve (1). The wet wiper valve (1) has a double cylindrical shape, and the upper part between the two cylinders is closed. At the same time, the shaft (2) is inserted through the inner cylindrical portion (6a), and the nozzles (5a, 5b) located on both sides of the wiper blade, and the nozzle (5)
a, 5b) and a lid member (6) having an opening on the inner surface with an opening (18a, 18b) communicating with the lid member (6). A base (3) having a flow path (C) extending from the upper surface to the upper surface;
A rotation member (4) provided inside the lid member (6) above the base portion (3), and the rotation member (4) has a predetermined range with respect to the lid member (6). And the holes (18a, 18a,
Valve plate (17) for selectively opening and closing 18b)
And a switching plate (14) that can be engaged with the base (3) within a range smaller than the rotation range of the shaft (2), and the cover member is formed by the shaft (2). When (6) turns, the turning member (4) also rotates together with the holes, and the holes (18a) (18b) in the front in the turning direction.
When the end of the rotation area is approached, the switching plate (14) engages with the base (3), the rotation member (4) stops rotating together, and the valve plate (17) is released.
Switches between the holes (18a) and (18b). 2. A recess (19) having a projection (20) in the center thereof is formed in the lid member (6).
The valve plate (17) is formed with a resilient portion (17c) located in a concave portion (19) provided in the lid member (6), and the valve plate (17) is provided with the resilient portion (1).
7c) is rotatable over the projection (20) within the range of the concave portion (19) of the lid member (6), and when the lid member (6) comes into contact with the end face of the concave portion (2). The wet wiper valve according to claim 1, which rotates together with the valve. 3. The wet wiper valve according to claim 1, wherein a hole is formed at a tip end of the resilient portion (17c) of the valve plate (17) so as to have elasticity. 4. A washer (1) is provided on the base (3).
6. The rotating member (4) is easily slid via the base (3) when the lower surface of the switching plate (14) abuts on the washer (16). Wet wiper valve.