JPH0228745Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a cleaning brush in which a hose is connected to the end of the handle and water is spouted from the center of the brush part, which maintains watertightness. The length of the handle can be adjusted telescopically.

[Prior Art] Cleaning brushes have been known in the past, which are connected to a handle of a hose connected to a faucet and used to clean while pouring water.In addition, such cleaning brushes can be used in places such as high places and other places by expanding and contracting the handle. A device configured to allow cleaning in a narrow space is known.

For example, the "car wash brush" of Utility Model Publication No. 57-55330 is
In a car wash brush whose handle length is adjustable, the handle has a base pipe member with a brush member attached to one end and a sliding member attached to the inner edge of the other end, a water hose attachment part, and a grip part. An armored tube with one end attached to a fixture and an adjustment tool attached to the outer edge of the other end with a rotating member rotatably fitted to a cylindrical member with a tightening portion formed at the end, and the armored tube is inserted. and an inner tube whose end portion is attached to the fitting, and the base tube material is slidably inserted through the inner tube and into the outer tube, and is tightened by rotation of the rotating member of the adjustment tool. The length of the handle can be adjusted by loosening or tightening the handle.

[Problems to be Solved by the Invention] However, according to this configuration, when the length of the handle is adjusted using an adjusting tool, the base tube can be adjusted by expanding and contracting from the outer tube, and the length can be adjusted at the desired length position. temporarily stop it. Thereafter, the tightening force is extremely weak because the base tube member is simply held in this position by tightening the tightening member by rotating the rotating member. For this reason, the base tube material is pushed in the axial direction by the pressing force applied to the brush member during brushing during use, and the tightening with the outer tube gradually loosens, causing it to shrink unnecessarily, and eventually the specified length of the handle becomes shorter. It has the disadvantage that it cannot be maintained and that gaps are formed, causing water leakage.

For this reason, there is a ``cleaning brush'' disclosed in Utility Model Application Publication No. 115663/1983 that strengthens the connecting force between the two pipes. Here, a construction of a joint tube for firmly connecting a small diameter tube with a brush and its attachment tube attached to one end to a large diameter tube will be disclosed. The joint tube of this invention has, for example, a distal end with an inner diameter equal to the outer diameter of the small diameter tube, a groove on the inside of this distal end forming a surface slightly inclined toward the rear, and a joint that fits into the groove. It has a flat ring-shaped packing, and has a female threaded part behind it, and the male threaded end of the large diameter part is screwed into this female threaded part, and the small diameter pipe is prevented from coming off by the packing and the rear retaining part of the small diameter pipe. It is configured to stop.

However, the flat ring-shaped packing is usually an O-ring made of rubber and having a constant inner diameter in the axial direction.
This merely prevents a gap from being created by being pressed between the inner wall surface of the joint tube, which has contracted due to tightening, and the end surface of the large diameter tube. For this reason, if the joint tube loosens even a little after years of use, the ring-shaped packing also loosens, creating a gap, and if the packing itself is made of rubber or the like, it tends to deteriorate easily.

In addition, these conventional devices had the disadvantage that when the handle was expanded and contracted, the watertightness of the expansion and contraction portion was low, causing water leakage due to the water pressure when pouring water, making it unusable.

[Means for solving the problems] The present invention solves all the drawbacks of the above conventional examples, and
In a configuration in which the brush main body is attached to one end of the water pipe so as to be able to inject water, and an extension pipe is inserted into the other end of the water pipe to connect the brush body in a flexible manner,
The purpose is to connect the water pipe to the extension pipe firmly and watertight via a pipe joint and a tightening cap, and for this purpose, a brush body is attached to one end of the water pipe so that water can be injected,
The cleaning brush is constructed such that an extension pipe is inserted into the other end of the water flow pipe and connected in a flexible manner, and the extension pipe can be freely inserted into the other end of the water flow pipe, and a threaded groove is provided on the outer peripheral surface. The inner diameter of the other end of the pipe joint is formed into a small diameter part that matches the outer diameter of the extension pipe, and the opening end surface of the small diameter part is sloped and a stepped part is formed in the deep part of the pipe joint. At the same time, a half-shaped hard resin sleeve is slidably inserted into a desired part of the extension pipe, and a step part is provided around one end of the sleeve to form a thin, small diameter part. A prismatic gasket is fitted into the groove of the sleeve and fixed in position, and the gasket is slightly thinner than the wall thickness of the sleeve, has a width slightly wider than the groove, and has a height slightly lower than the height of the sleeve. Further, a tightening cap is attached to the extension pipe to accommodate the sleeve and packing, and the tightening cap is screwed into the thread groove of the pipe joint.

[Function] When adjusting the length of the handle of the cleaning brush as appropriate, while positioning the sleeve to be fitted to the extension pipe, fit a rubber gasket into the groove of the sleeve and hold it in place. Then, with these sleeves and packings housed in the tightening cap inserted into the extension pipe, screw the threaded portion of the tightening cap into the threaded groove of the pipe joint. The small diameter portion of the sleeve fits into the inclined surface of the end surface of the small diameter portion of the pipe joint, and the end edge is supported by the stepped portion at the deep end. At this time, as the tightening cap is screwed, the pipe joint approaches the sleeve side, and the edge of the sleeve moves toward the stepped part of the pipe joint.
As its inner diameter is narrowed, the rubber gasket inside the split groove is gradually compressed, and as it is squeezed little by little, it is pushed firmly into the inside of the pipe joint. Therefore, the space between the inner circumferential surface of the pipe joint and the outer circumferential surface of the extension pipe is tightly sealed by the sleeve. The packing is slightly thinner than the sleeve, slightly wider than the groove, and has a height slightly lower than the height of the sleeve, so it is formed into a prismatic shape, so it is compressed without sticking out from the sleeve, allowing the water flow pipe and extension pipe to be compressed. Connect them in a highly watertight manner to prevent water leakage.

On the other hand, since the sleeve is fixed at a predetermined position on the extension pipe by tightening the tightening cap, the extension pipe and the water pipe are firmly connected, and no unnecessary expansion or contraction occurs.

In addition, since the sleeve is made of hard resin, it can withstand many years of use and is resistant to deterioration, and is not deformed by pressure, so the connection between the two pipes can maintain a higher degree of watertightness.

[Example] In the figure, reference numeral 1 designates a brush main body which has a planar triangular shape and has a water inlet 2 in the center, a large number of bristles 3 having a required length of bristles on one side, and a brush main body having a triangular shape on the other side. A cylindrical joint part 4 communicating with the water inlet 2 is provided protrudingly at a required inclination angle. The joint part 4
A socket 6 for a water pipe 5 is provided in the upper half of the tank. 7 is an extension pipe that is slidably inserted into the water pipe 5;
A hose fitting 8 is fitted to the other end to connect a hose (not shown), and the hose is connected to a faucet via the hose.

Reference numeral 9 denotes a pipe joint to be fitted to the other end of the water pipe 5, about half of which in the longitudinal direction is fitted into the water pipe 5, and the inner diameter of the remaining half matches the inner diameter of the water pipe 5. That is, the small diameter part 10 is formed to match the outer diameter of the extension pipe 7, and the opening end surface of the small diameter part 10 is sloped, and a step part 11 is provided around the inner part thereof. A thread groove 12 is provided on the outer peripheral surface of the small diameter portion 10.

13 is a half-shaped resin sleeve that is slidably fitted into the extension pipe 7;
A step part is provided around one end side to form a thin small diameter part 14, and a prismatic rubber gasket 1 is installed in the dividing groove 15.
6 to facilitate positioning of the sleeve 13, and also to facilitate fitting the sleeve into the pipe joint 9 in a watertight state. The packing 16 is formed into a prismatic shape that is slightly thinner than the wall thickness of the sleeve 13, has a width slightly wider than the split groove 15, and has a height slightly lower than the height of the sleeve 13, and is detachably inserted into the split groove 15. do. A step 17 is provided around the outer peripheral surface of the end of the extension pipe 7 using tape or the like to prevent the sleeve 13 from falling off when the extension pipe 7 and the water pipe 5 are separated.

Reference numeral 18 denotes a tightening cap that is inserted into the extension pipe 7 and screwed into the thread groove 12 provided in the pipe joint 9, and has a threaded portion 19 around the inner peripheral surface, and the extension pipe 7 is inserted into one end thereof. A through hole 20 is opened and formed, and a sleeve 13 and a packing 1 are inserted inside.
6, insert the threaded portion 19 into the pipe fitting 9.
By screwing into the thread groove 12, the water pipe 5 and the extension pipe 7 are connected to a desired extension length while maintaining high watertightness.

The cleaning brush of the present invention constructed as described above can be adjusted according to the height of the place where it will be used and the length to be inserted into a narrow place by adjusting the position of the sleeve 13 fitted to the extension pipe 7. Since the sleeve 13 can be adjusted freely, first position the sleeve 13, then fit the gasket 16 into the slot 15 of the sleeve 13 to fix it at a predetermined position.
The length can be freely adjusted by screwing the threaded portion 19 of the tightening cap into the thread groove 12 of the pipe joint 9 with the sleeve 13 and the buckle 16 housed in the tightening cap 18 inserted through the tube. Moreover, it fits into the inclined surface of the end surface of the small diameter portion 10 of the sleeve 13, and the end edge is supported by the stepped portion 11. At this time, the rubber gasket 16 fitted into the groove 15 of the sleeve 13 is formed into a prismatic shape that is slightly thinner than the sleeve, slightly wider than the groove 15 in width, and slightly lower in height than the height of the sleeve 13. Therefore, by screwing the tightening cap 18, the edge of the sleeve 13 is gradually pushed into the gap between the inclined opening end surface of the pipe joint 9 and the outer peripheral surface of the extension pipe 7, and when sealing, The packing 16 is compressed without being squeezed out from the sleeve 13, and connects the water pipe 5 and the extension pipe 7 in a highly watertight state, thereby preventing water leakage.

[Effects of the invention] As stated above, the cleaning brush of the invention has the following advantages:
It is constructed by fitting a gasket of a predetermined shape into the groove of a hard resin sleeve that fits into a predetermined position of the extension pipe, so that when the tightening cap that is inserted into the extension pipe is screwed onto the pipe joint, , the pipe joint gradually approaches the sleeve side, while the packing is gradually compressed and the inner diameter of the sleeve itself is also narrowed, the small diameter part of the sleeve is firmly pressed into the inner peripheral surface of the pipe joint, and finally the sleeve The edge of the pipe is supported by a step inside the pipe fitting. As a result, the space between the inner circumferential surface of the pipe joint and the outer circumferential surface of the extension pipe is highly sealed, and the water flow pipe and the extension pipe also maintain high watertightness through this connection, preventing water leakage. It has the advantage of being able to be connected to

Furthermore, the sleeve on the fitting pipe is fixed in position by tightening the clamping cap, so that the two connected pipes do not come loose, and thus the length of the brush handle remains constant.

In addition, since the sleeve cover is made of hard resin, it does not easily deteriorate, and is not only highly durable.
There is also the advantage that a higher watertight state can be obtained since no deformation occurs under pressure.

Moreover, it has the advantage of being easy to use, as the extension length of the extension pipe can be freely changed and adjusted according to the place of use by changing the fitting location of the sleeve to the extension pipe.

[Brief explanation of drawings]

The drawings relate to an embodiment of the present invention, and FIG. 1 is a perspective view, FIG. 2 is an exploded perspective view, and FIG. 3 is a sectional view. 1...Brush body, 5...Water pipe, 7...
Extension pipe, 9... Pipe joint, 10... Small diameter part, 11... Step part, 12... Thread groove, 13... Sleeve, 14... Small diameter part, 16... Packing, 1
8...Tightening cap.

Claims (1)

[Scope of utility model registration request] In a cleaning brush configured such that a brush main body is attached to one end of a water pipe so that water can be injected, and an extension pipe is inserted into the other end of the water pipe to connect the brush body to the other end of the water pipe in a flexible manner. A pipe joint into which the extension pipe can be freely inserted and which has a thread groove on the outer circumferential surface is fitted, and the inside diameter of the other end of the pipe joint is formed into a small diameter portion that matches the outside diameter of the extension pipe, and the small diameter The opening end surface of the section is sloped and a stepped section is provided around the inner part, and a half-shaped hard resin sleeve is slidably inserted into a desired position of the extension pipe, and one end of the sleeve is A step part is provided around the side to form a thin small diameter part, and a prismatic packing is fitted into the groove of the sleeve to fix the position.
The packing is formed to be slightly thinner than the wall thickness of the sleeve, slightly wider than the split groove, and slightly lower in height than the height of the sleeve, and a tightening cap is attached to the extension pipe to tighten the sleeve and the packing. A cleaning brush, characterized in that the cleaning brush is housed and the tightening cap is screwed into the thread groove of the pipe joint.