JPS6230980Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a brush body rotation device for a brush with a handle, in which the brush body can be automatically rotated by 180 degrees by pressing an operating lever.

[Conventional technology]

Conventionally, this type of device is known as Utility Model Publication No. 59-34348.

This conventional device has a pair of guide protrusions erected on the inner wall surface of a brush holder with a handle, and a cylinder on the top surface of the brush body that has a sloped surface that can be freely pressed by the tip of the operating lever. A boss-shaped portion is provided upright, and engagement grooves in which the guide protrusion can freely engage are formed on both sides of the boss-shaped portion, and a cam wall having an inclined surface extending halfway around the engagement groove is formed on both sides of the boss-shaped portion. It is integrally formed, and the tip of the operating lever is used to press the inclined surface of the boss-shaped portion downward, and after releasing the guide protrusion from the engagement groove, the guide protrusion is slid along the inclined surface. This allows the brush body to rotate 180 degrees.

[Problem that the invention attempts to solve]

In the above-mentioned conventional device, the guide protrusion is formed on the brush holder, the boss-like part and the cam wall are formed on the brush body, and the holding and rotation control of the brush body is performed only by the guide protrusion. However, when pressing the sloped surface of the boss-like part, the pressing force is not only concentrated on the guide protrusion, which can easily damage the guide protrusion, but also when the brush body is rotated and used. tends to wobble, making rotational operation and holding unstable and uncertain.
Furthermore, since only the fulcrum part of the operating lever is held by the brush holder, it is extremely prone to wobbling.
There were some aspects that made it difficult to make the pressing operation smooth.

[Means for solving problems]

This invention attempts to solve the problems of conventional devices all at once, and includes a brush holder 1 with a handle, a brush body 15 pivotally attached to the brush holder 1 via a spring 21 so as to be vertically rotatable, and a brush holder 1 with a handle. A bifurcated operating lever 10 that operates the brush body 15
Therefore, a cylindrical female part 4 is provided upright on the inner wall surface of the brush holder 1, and an inclined surface 5 extending halfway around the circumference is formed on the tip surface of the female part 4 through a pair of engagement grooves 8 on both sides. A lever guide groove 9 is formed in the same direction, and a lever guide groove 9 is formed along the longitudinal direction on one side of the female part 4, and on the other hand, a lever guide groove 9 is formed on the upper surface of the brush body 15 so that the female part 4 can freely rotate up and down. A fitted cylindrical male part 18 is erected, and on the tip surface of the male part 18, an inclined surface 22 extending halfway around the circumference, which can be freely pressed by the tip of the operating lever 10, is continuously provided in the same direction around the circumference. The brush body rotating device for a brush with a handle includes a pair of guide protrusions 23 formed on both sides of the male portion 18 that can be freely engaged with the engagement groove 8.

[Effect]

In the device according to this invention, the operating lever 10 is operated along the lever guide groove 9 of the female part 4, and the inclined surface 22 at the tip of the male part 18 presses the male part 18 into the female part 4. After disengaging the guide protrusion 23 from the engagement groove 8, push the released guide protrusion 23 down with the male part 18 along the inner surface of the female part 4. The brush body 15 is rotated 180 degrees by sliding it along the inclined surface 5 at the tip of the part 4 and again engaging the guide protrusion 23 with the other engagement groove 8.

〔Example〕

An embodiment of this invention shown in the drawings will be described below.

In Figures 1 to 3, 1 is the handle 2.
3 is a support shaft erected in the center of the inner wall of the brush holder 1; 4 is a cylindrical female part erected on the inner wall surface of the brush holder 1 with the support shaft 3 as the center; 5 are a pair of inclined surfaces formed on the distal end surface of the female part 4 in half-circumferential directions, and each inclined surface 5 is formed in the same direction around the circumference, and between each of its high portions 6 and low portions 7. An engagement groove 8 is formed in each. 9 is a lever guide groove formed on the side wall of the female part 4 facing the rear of the brush holder 1;
Reference numeral 0 designates an operating lever having a bifurcated tip which is inserted into the brush holder 1 from the rear.The bifurcated portion 11 of the operating lever 10 is inserted into the female portion 4, and its neck 12 Each lever is inserted into the lever guide groove 9 so as to be vertically movable. The operating lever 10 has a protrusion 14, which is provided inwardly from the rear end of the brush holder 1, in contact with a recess 13 formed on its middle upper surface, and uses the protrusion 14 as a fulcrum to perform a lever action. ing. Reference numeral 15 denotes a brush body having numerous short raised bristles 17 laid down in one direction on its lower surface via a substrate 16, and the brush body 15 has an inward flange 19 inward at its tip which is erected in the center of its upper surface. The cylindrical male part 18 having the female part 4
The support shaft 3 is inserted into the male part 18 so as to be vertically rotatable, and the spring receiver 20 and flange 19 are attached to the tip of the support shaft 3.
By providing a compression spring 21 between the brush holder 1 and the brush holder 1, the brush holder 1 is pivotally connected to the brush holder 1 so as to be vertically rotatable. 2
Reference numeral 2 denotes a pair of inclined surfaces 22 formed halfway around the tip of the male portion 18, and each inclined surface 22 is formed in the same direction around the circumference, and the two inclined surfaces 22 of the constant operation lever 10
The crotch portion 11 is brought into contact. Reference numeral 23 denotes a pair of guide protrusions formed on both outer surfaces of the male portion 18, and the width of the guide protrusions 23 is made larger than the groove width of the lever guide groove 9, and can be freely engaged in the engagement groove 8. It is said that

In the device according to the invention configured as described above, in the normal state, the guide protrusion 23 engages with the engagement groove 8 as shown in FIG. 4, and the brush body 1
5 is stably seated on the brush holder 1. At this time, the two crotches 11 of the operating lever 10
are brought into contact with the inclined surface 22 of the male part 18 at a position slightly lower than the high position. When rotating the brush body 15, an operating lever 10 is used.
It is best to press the handle in two directions. Then, the operating lever 10 uses the protrusion 14 as a fulcrum, and its bifurcated portion 11 presses against the inclined surface 22 of the male portion 18.
The male part 18 begins to descend along the inner surface of the female part 4 against the compression spring 21. At this time, male part 1
8, the guide protrusion 23 also descends along the engagement groove 8. When the operating lever 10 is further pressed, the guide protrusion 23 moves into the engagement groove 8 as shown in FIG.
The engagement with the engagement groove 8 is released at the same time as the tip of the engagement groove 8 is reached. Then, the compression spring 21 is biased again and tries to push up the male part 18, so the guide protrusion 23 slides from the high part 6 of the female part inclined surface 5 toward the low part 7, and is interlocked with this. Since the male part 18 also rotates along the inner surface of the female part 4, the brushed part 15 starts rotating. At this time, the guide protrusion 23 is the sixth
As shown in the figure, when the guide protrusion 23 reaches the surface of the lever guide groove 9, the width of the guide protrusion 23 is larger than the groove width of the lever guide groove 9.
Since at least a portion of the lever is located outside the lever guide groove 9, there is no problem with its sliding passage. Then, when the guide protrusion 23 rotates 180 degrees and reaches the lower part 7 of the female part inclined surface 5, it is again engaged with the other engagement groove 8. The rotation of the male part 18 is also stopped due to the engagement between the guide protrusion 23 and the engagement groove 8, and in conjunction with this, the brush body 15 is again stably seated on the brush holder 1 at a position rotated by 180 degrees.

Below, use the same operation to move the brush body 15 to 180
It is best to rotate it one by one.

It goes without saying that the lever guide groove 9 formed in the side wall of the female part 4 in the above embodiment may form a closing part 24 along the inclined surface 5 as shown in FIG.

[Effect of idea]

Since this idea is structured as described above,
The brush 15 can be automatically rotated by 180 degrees. In particular, the female part 4 of the brush holder 1 has a male part 18 of the brush body 15.
are fitted so that they can rotate up and down, so the male part 1
8 can be reliably held in the female part 4 at all times not only in a stationary state but also when moving up and down and rotating, and effectively prevents rattling of the brush body 15 when the brush is used. Not only can the guide protrusion 23 be moved up and down,
In addition, the slide is always operated smoothly in a predetermined state, and as a result, the vertical movement and rotation of the brush body 15 can be performed accurately and reliably without wobbling. Further, since the guide protrusions 23 are integrally formed on both sides of the male part 18, the pressing force when pressing the operating lever 10 can be distributed to the male part 18 without being received by the guide protrusions 23 alone. and the guide protrusion 23
damage can be effectively prevented. moreover,
Since the lever guide groove 9 is formed in the side wall of the female part 4, the lever 10 can be operated reliably without wobbling.

[Brief explanation of the drawing]

The drawing shows one embodiment of this invention.
The figure is a vertical sectional view, FIG. 2 is a horizontal sectional view, FIG. 3 is an exploded perspective view showing the main parts, FIGS. 4 to 6 are sectional views showing the operating state, and FIG. 7 is a female part 4 and other parts. It is a perspective view showing an example of this. 1...Brush holder, 4...Female part, 5...
Inclined surface, 8... Engagement groove, 9... Lever guide groove, 1
0... Operation lever, 15... Brush body, 18...
Male part, 21... Compression spring, 22... Inclined surface, 2
3...Guiding protrusion.

Claims (1)

[Scope of utility model registration request] The brush holder 1 is composed of a brush holder 1 with a handle, a brush body 15 pivotally attached to the brush holder 1 via a spring 21 so as to be rotatable up and down, and a bifurcated operating lever 10 for operating the brush body 15. A cylindrical female part 4 is erected on the inner wall surface of the holder 1, and an inclined surface 5 extending halfway around the circumference is formed in the same direction around the circumference on the distal end surface of the female part 4 via a pair of engagement grooves 8 on both sides. In addition, a lever guide groove 9 is formed along the longitudinal direction on one side of the female part 4, and on the other side,
A cylindrical male part 18 is provided on the top surface of the brush body 15 and is fitted into the female part 4 so as to be vertically rotatable, and the tip of the male part 18 can be freely pressed by the tip of the operating lever 10. Slanted surfaces 22 are continuously formed in the same direction around the circumference, and a pair of guide protrusions 23 that can be freely engaged with the engagement groove 8 are provided on both sides of the male part 18. A brush rotation device for a brush with a handle that is integrally formed.