JP5725756B2 - Assembled brush - Google Patents

Description

  The present invention relates to an assembly-type brush that can assemble a brush body and a handle body, and a handle and a brush structure used for the brush.

For example, a so-called industrial brush that removes metal rust and persistent dirt such as oil causes rust removal and dirt removal while strongly pressing the brush part against an object, so that wear of the brush part becomes severe. Therefore, in the field of industrial brushes, it is required to replace only the worn brush portion while leaving the handle portion as it is.
The idea of replacing only the brush portion is disclosed in Patent Document 1, for example. In the brush described in Patent Document 1, a handle portion and a brush portion are connected by screws, and the connecting portion is detachable.

Japanese Patent Laid-Open No. 10-295441

In the conventional brush as described above, the handle portion and the brush portion are connected with a screw. For example, when the brush portion is strongly pressed against an object, stress is concentrated on the base end portion of the male screw. However, the male screw is easily damaged. In order to prevent the male screw from being damaged, it is conceivable to make the male screw thicker, but there is a limit to making only the screw part thicker.
Therefore, the conventional brush described in Patent Document 1 has a problem that it cannot be used as a so-called industrial brush.

The purpose of this invention, the part and the part of the brush handle, while the detachable through the connection portion is the strength of their connection portion to provide a sufficiently maintaining the assembled brush.

This invention consists of a handle body having a connecting portion for connecting the brush body and grip portion and the brush body having a connecting portion for connecting to the planting unit and the planting unit planted bristles, the An insertion hole is formed in either one of the connecting part of the brush body or the connecting part of the handle body, and the other connecting part is inserted into the inserting hole provided in the one connecting part. Assume a prefabricated brush with protrusions .
Then, the insertion hole of the one connecting portion is located with respect to the insertion direction of the insertion protrusion as a reference, the first insertion hole positioned rearward, and the front of the first insertion hole, the first insertion hole A second insertion hole having a smaller opening cross section, and an opening located in the middle of the first and second insertion holes and provided with a hook portion on the edge thereof.
Further, the insertion protrusion of the other connecting portion is continuous with the first insertion protrusion and the first insertion protrusion positioned rearward with respect to the insertion direction into the insertion hole. A second insertion protrusion that is positioned further forward than the first insertion protrusion and that is narrower than the first insertion protrusion, and is continuous with the first insertion protrusion and is located on both outer sides of the second insertion protrusion, and a pair of elastic hooking pieces provided with parts.

Further, the second insertion protrusion maintains a length protruding forward in the insertion direction from the elastic hook piece, and the insertion length of the first and second insertion holes is set to the first and second insertion protrusions and The elastic hook piece is dimensioned so that it can be inserted, and the inner circumference of the first and second insertion holes and the outer circumference of the first and second insertion protrusions are substantially matched, and the elastic hook piece is in a natural state. When the insertion protrusion is inserted into the insertion hole while maintaining the dimensional relationship in which the flange protrudes outward from the width of the first insertion protrusion, It is configured to protrude outward and to be hooked on the hook portion.

According to this invention, it separates the handle and the brush portion, for example, when the bristles had worn, only replace part of the brush, the handle can be used as it is. In addition, when the handle is damaged or dirty, it is possible to replace only the handle.
Also, the type of brush can be easily changed according to the application. For example, metal wire brushes, animal hair brushes, chemical fiber brushes, and the like can be used while being replaced according to their applications.
And in this invention, when assembling a brush, a connection part consists of an insertion hole and an insertion protrusion, and there is no part which stress concentrates and is easy to break like the base end of an external thread.

Moreover, since the said insertion hole is equipped with the dimension which inserts the full length of an insertion protrusion, the overlap length of one connection part and the other connection part becomes long. The longer the overlapping length, the smaller the rattling between the two connecting portions.
In particular, since the entire length of the insertion protrusion can be increased by causing the insertion protrusion to protrude beyond the elastic hook piece, rattling between the two connecting portions can be almost eliminated.
If the connecting portion is rattled, the load acting on the connecting portion during use of the brush causes a shift between the two connecting portions, resulting in a location where stress is concentrated.
However, if the backlash is small as in the present invention, there is no place where the stress is concentrated even if a load is applied, so that the connecting portion is not easily damaged.

Further, since the hook portion of the elastic hook piece of the other connecting portion is hooked and connected to the hook portion of the opening of the insertion hole, the hook piece once inserted cannot be easily removed from the insertion hole.

FIG. 1 is a side view of the assembled brush according to the embodiment. FIG. 2 is a plan view of the brush body and the handle body of the embodiment. FIG. 3 is a side view of the brush body of the embodiment.

1 to 3 show an embodiment of an assembly brush according to the present invention.
As shown in FIG. 1, the assembly-type brush of this embodiment includes a brush body 1 and a handle body 2, and the brush body 1 and the handle body 2 are detachable by connecting portions 3 and 4.

The said brush main body 1 is provided with the planting part 6 which planted the bristle 5, and the connection part 3 which is one connection part of this invention .
The connecting portion 3 includes a first insertion hole 7a for inserting an insertion protrusion formed in the connecting portion 4 of the handle body 2 to be described later, and the planting portion 6 side that is forward of the first insertion hole 7a in the insertion direction. And a second insertion hole 7b having a smaller opening cross section than the first insertion hole 7a. The first insertion hole 7a and the second insertion hole 7b constitute the insertion hole of the present invention.
In this embodiment, the connecting portion 4 constitutes the other connecting portion of the present invention.

As shown in FIGS. 1 and 3, an opening 7c is formed in the middle of the first insertion hole 7a and the second insertion hole 7b, and the edge of the opening 7c is used as a hook portion 7d. The hooking portion 7d is for hooking an elastic hooking piece 11 provided on the connecting portion 4 of the handle body 2 described later.
Furthermore, a finger contact surface 8 is provided on the surface of the connecting portion 3 of the brush body 1 on the side opposite to the brush bristles 5. This finger contact surface 8 is a surface for applying a force by applying a finger when using the assembly type brush of this embodiment.
In addition, the planting part 6 and the connection part 3 of this brush main body 1 can be integrally molded with resin.

On the other hand, the handle body 2 includes the connecting portion 4 that is the other connecting portion that is connected to the connecting portion 3 of the brush body 1, and a grip 9 that is continuous to the connecting portion 4. Further, a scraper 12 is provided at the end of the grip portion 9, and this scraper 12 preliminarily removes rust and dirt of the object to be processed before processing with the brush bristles 5 of the assembly type brush of this embodiment. It is for scraping, but it is not an essential element.

Further, as shown in FIG. 2, the connecting portion 4 of the handle body 2 is positioned in front of the first insertion protrusion 10a and the first insertion protrusion 10a in the insertion direction. And a second insertion protrusion 10b that is narrower than the protrusion 10a. And these 1st, 2nd insertion protrusions 10a and 10b comprise the insertion protrusion of this invention.
Further, the connecting portion 4 is provided with a pair of elastic hooking pieces 11 continuous with the first insertion protrusion 10a. This elastic hooking piece 11 is provided on both outer sides of the second insertion protrusion, and in a natural state where no external force acts, the flange 11a at the tip protrudes outward from the width of the first insertion protrusion 10a. I am doing so.

In addition, the tip of the second insertion protrusion 10 b protrudes forward in the insertion direction from the hook piece 11.
In addition, these 1st, 2nd insertion protrusions 10a and 10b and the elastic hooking piece 11 can be integrally molded as the resin-made pattern main body 2. FIG.

Then, the first insertion hole 7 a and the second insertion hole 7 b in the connecting portion 3 of the brush body 1 are combined into the first and second insertion protrusions 10 a and 10 b and the elastic hook piece 11 of the handle body 2. The dimensions are such that can be inserted.
That is, the length L1 of the insertion hole that combines the first insertion hole 7a and the second insertion hole 7b is equal to or slightly larger than the length L2 that combines the first and second insertion protrusions 10a and 10b. When the connecting part 3 of the brush body 1 is inserted and connected to the connecting part 4 of the handle body 2, the total length L2 of the first and second insertion protrusions 10a and 10b is the first and second insertion holes. 7a and 7b.

  Further, the inner circumference of the first insertion hole 7a and the outer circumference of the first insertion protrusion 10a are substantially matched, and the outer circumference of the second insertion protrusion 10b and the inner circumference of the second insertion hole 7b are substantially equal. Try to match.

The first and second insertion protrusions 10a and 10b of the handle body 2 are inserted into the first and second insertion holes 7a and 7b of the brush body 1 as described above, and the brush body 1 and the handle body 2 are connected. When connected, there is almost no gap between the connecting parts 3 and 4.
Further, when the elastic hooking piece 11 is inserted into the first insertion hole 7a substantially coinciding with the first insertion protrusion 10a, the tip end side moves inward, but when reaching the opening 7c, It spreads in the direction and the hook part 11a is hooked on the hook part 7d. Accordingly, the hook piece 11 which is once inserted simply not come off easy from the first insertion hole 7a.

The assembly-type brush assembled by connecting the connecting portion 3 and the connecting portion 4 as described above includes the insertion holes 7a and 7b of the connecting portion 3 and the first and second insertion protrusions 10a and 10b of the connecting portion 4. Since the overlapping length is long, even if the tip of the brush bristles 5 is pressed strongly against the object, the connecting portion will not be damaged or rattled. Therefore, this assembly type brush can be used as an industrial brush on which a large force acts.
In particular, in the assembly type brush according to this embodiment, the overlapping length between the connecting portion 3 and the connecting portion 4 is provided by providing the connecting portion 4 with the second insertion protrusion 10b protruding forward in the insertion direction from the elastic hooking piece 11. The stability is increased by increasing the height.

As described above, the reason why the stability of the connecting portion can be increased by providing the second insertion protrusion 10b is as follows.
First, in order to increase the strength of the connecting portion between the connecting portion 3 and the connecting portion 4, it is necessary that the overlapping length of both is large. If the overlapping length of the connecting portions 3 and 4 is large, even if there is a slight gap between the insertion hole of the connecting portion 3 and the insertion protrusion of the connecting portion 4, the inclination of the insertion protrusion with respect to the insertion hole Becomes smaller. In other words, since the backlash is reduced, the stress as a whole can be maintained without concentration of stress at a specific location.

On the other hand, the elastic hooking piece 11 uses the elasticity of the resin piece, and if the length is too long, the rigidity cannot be maintained. Therefore, the elastic hook piece 11 cannot be made so long.
Therefore, when the connection part 4 is comprised by the 1st insertion protrusion 10a and the elastic hook piece 11, and is not provided with the 2nd insertion protrusion 10b, the full length of an insertion protrusion cannot be made so long.
However, if the second insertion protrusion 10b protruding from the tip of the elastic hook piece 11 is provided as in the above-described embodiment, the entire length of the insertion protrusion is increased while maintaining an appropriate rigidity of the elastic hook piece 11. Thus, the overlap length with the insertion hole can be increased.

In the above-described embodiment, an insertion hole is formed in the connecting portion 3 of the brush body 1 and an insertion protrusion is provided in the connecting portion 4 of the handle body 2. You may provide the said connection part 3 which provided the part 4 and formed the insertion hole in the pattern main body 2. As shown in FIG. Anyway, can increase the overlap length between the insertion hole and the insertion projection, to increase the strength of the connecting portion, to eliminate the backlash, that Do as to withstand use as an industrial brush.

  The assembly-type brush of this invention is suitable for industrial brushes that are used for removing rust, cleaning, and the like, and exert a great force.

Correction 1 Brush body 2 Handle body 3 Connection part 4 Connection part 5 Brush hair 6 Planting part 7a First insertion hole 7b Second insertion hole
7c opening 7d hook portion
9 Grip portion 10a First insertion protrusion 10b Second insertion protrusion 11 Elastic hook piece
11a buttock

Claims (1)

A brush body having a planting part in which brush hairs are planted and a connecting part connected to the planting part, a grip body, and a handle main body having a connecting part connected to the brush body ,
An insertion hole is formed in either one of the connecting part of the brush body or the connecting part of the handle body, and the other connecting part is inserted into an insertion hole provided in the one connecting part. In the assembly type brush which formed the insertion protrusion ,
The insertion hole of the one connecting portion is located on the rear side with respect to the insertion direction of the insertion protrusion, and is positioned forward of the first insertion hole and more than the first insertion hole. A second insertion hole having a small opening cross-section, and an opening located in the middle of the first and second insertion holes and provided with a hook on the edge thereof,
The insertion protrusion of the other connecting portion is continuous with the first insertion protrusion, which is located rearward with respect to the insertion direction into the insertion hole, and is more continuous than the first insertion protrusion. A second insertion protrusion, which is positioned forward and narrower than the first insertion protrusion, is continuous with the first insertion protrusion, is located on both outer sides of the second insertion protrusion, and has a flange at its tip. the a pair of elastic hooking piece provided,
The second inserting projection keeps the length protruding in the insertion direction forward of the elastic hooking piece, hook insertion direction length in the first and second insertion protrusions and the elasticity of the first and second insertion holes The dimension is such that the piece can be inserted, and the inner circumference of the first and second insertion holes and the outer circumference of the first and second insertion protrusions are substantially matched .
And the elastic hook piece maintains a dimensional relationship in which the flange portion protrudes outward from the width of the first insertion protrusion in a natural state,
When inserting the inserting projection into the insertion hole, assembly type brush hook of the elastic hooking piece was protruded from the opening outwardly to this configuration hooked to the hook portion.

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