JP3744008B2 - Vacuum cleaner - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to household and industrial vacuum cleaners.
[0002]
[Prior art]
The configuration of this type of conventional vacuum cleaner will be described with reference to the drawings. As shown in FIG. 5, the main body 51 includes a motor 52 and the like, and includes a dust collection chamber 55 that collects dust through a hose connected to an intake port 56 with a paper bag 54 in the front. A lid body 62 is disposed above 55 so as to be openable and closable upward, and rollers 53 are attached to both rear side surfaces so as to rotate in the front-rear direction. Further, a caster cover 59 provided with a caster roller 60 rotatably on a shaft 61 on a mounting shaft 57 protruding in the floor surface on the bottom surface of the dust collecting chamber 55 portion holds the tip 65 of the mounting shaft 57 and the caster cover 59. A portion 64 is rotatably attached.
[0003]
With this configuration, when the user pulls the main body 51 through the hose during cleaning, the caster cover 59 having the front caster roller 60 freely rotates around the mounting shaft 57 to follow the direction of the user pulling. To do. Reference numeral 63 in the drawing denotes the front bottom surface of the main body 51.
[0004]
[Problems to be solved by the invention]
However, in such a structure, the height of the mounting shaft 57 has a limit to ensure the strength of the base portion and to form the mounting shaft 57 with resin while forming the outer diameter of the mounting shaft 57 uniformly. Therefore, the front bottom surface 63 of the main body 51 cannot be provided at such a high position that it can be overcome without hitting the sill of the house. In other words, it was poor in usability, such as scratching the house when overcoming a threshold.
[0005]
The present invention solves such conventional problems, makes it easy to obtain variations in response to changes in the structure of the house, and does not damage the house when overcoming a sill or the like. The first purpose is to improve usability. Also, Ru der that the second objective is to achieve a low cost the first object.
[0006]
[Means for Solving the Problems]
In order to achieve the first and second objects , the vacuum cleaner of the present invention has a caster roller rotatably attached to a front portion of a bottom surface of a main body through a shaft body fixed to a downward projecting body. In addition, a detent is provided at the tip of the projecting body on the bottom surface of the main body, and the projecting body and the shaft body are fixed by fitting with a recess provided in the shaft body .
[0007]
[Action]
With the above configuration, the height of the bottom of the front of the main unit makes it easy to obtain variations in response to changes in the structure of the house, and it does not cause damage to the house when overcoming a sill, etc. It can be done well.
[0008]
Further, it can be assembled at low cost by fixing the projecting body and the shaft body on the bottom surface of the main body by fitting.
[0009]
【Example】
Example 1
Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.
[0010]
As shown in FIG. 1, the main body 1 includes a motor chamber 2 incorporating an electric blower and the like, a dust collection chamber 5 that collects dust through a hose connected to an intake port 6 with a paper bag 4 in the front, and the like. A lid 23 is provided above the dust collection chamber 5 so as to be openable and closable upward, and rollers 3 are attached to both rear side surfaces so as to rotate in the front-rear direction. A cylindrical mounting shaft B8 is fixed to a bottom surface of the dust collecting chamber 5 portion with a cylindrical mounting shaft A7 projecting in the floor direction by a screw 12, and the caster roller 10 can be rotated about the shaft 11. The provided caster cover 9 is rotatably attached by a catching claw portion 21 at the tip of the mounting shaft B8 and a holding portion 22 of the caster cover 9. In the figure, reference numeral 13 denotes a front bottom surface of the main body 1 and reference numeral 14 denotes a warped portion of the caster cover 9.
[0011]
With this configuration, when the user pulls the main body 1 through the hose during cleaning, the caster cover 9 having the caster roller 10 in the front freely rotates around the mounting shaft B8 and follows the direction of pulling by the user. To do.
[0012]
The operation in the above configuration is as follows.
[0013]
By attaching mounting shafts B8 with different heights, the height of the front bottom surface 13 of the main body 1 can be easily obtained in response to changes in the structure of the house. The front bottom surface 13 of 1 can collide with the sill, and can be smoothly passed over by the warped portion 14 of the caster cover 9 without causing scratches, so that the usability can be improved.
[0014]
(Example 2)
The second embodiment of the present invention will be described below. As shown in FIG. 2, the feature of this embodiment is that the mounting shaft B8 is provided with a lateral hole 16 in the configuration of the first embodiment, in which the hooking claw 15 formed at the tip of the mounting shaft A7 is caught. Both are fixed by fitting.
[0015]
With this configuration, the screw 12 of the first embodiment is not required and can be realized at low cost.
[0016]
Example 3
The third embodiment of the present invention will be described below. As shown in FIG. 3, the present embodiment is characterized in that, in the configuration of the first embodiment, a shaft portion 18 that fits the caster cover 9, the mounting shaft B8, and the mounting shaft A7, and the mounting A cylindrical shaft cover 17 made of a resin such as polyacetal is provided between the shaft B8 and the mounting shaft A7.
[0017]
As a result, the fitting between the mounting shaft B8 and the mounting shaft A7 can be strengthened, and the durability against wear and the like can be improved.
[0018]
(Example 4)
The fourth embodiment of the present invention will be described below. As shown in FIG. 4, the feature of the present embodiment is that the end face 20 of the mounting shaft B8 is the same as that of the first embodiment so that the axis center 19 of the mounting shaft B8 is perpendicular to the floor surface. It is the point which set it as the structure which provides an inclination.
[0019]
Thereby, the twisting force with respect to the mounting shaft B8 is reduced, and the rotation of the caster cover 9 around the shaft center 19 is improved.
[0020]
The attachment shaft B8 is formed of a material such as a soft elastomer. Thereby, it is possible to alleviate the impact of the sill and the like when overpassing and to prevent the sill from being damaged. In addition, noise during traveling can be reduced.
[0021]
【The invention's effect】
As is clear from the above description , according to the present invention , it is easy to obtain variations in response to the changes in the structure of the house, and it is possible to use without damaging the house when overcoming a sill or the like. The above-mentioned contents can be achieved at low cost.
[Brief description of the drawings]
FIG. 1 is a side view showing a section of a part of a vacuum cleaner according to a first embodiment of the present invention. FIG. 2 is a part of the vacuum cleaner according to a second embodiment of the present invention. Fig. 3 is a side view showing a cross section. Fig. 3 is a side view showing a cross section of a part of the vacuum cleaner according to the third embodiment of the present invention. Fig. 4 is a side view of the vacuum cleaner according to the fourth embodiment of the present invention. FIG. 5 is a side view showing a cross section with a part omitted. FIG. 5 is a side view showing a cross section with a part of a conventional vacuum cleaner omitted.
DESCRIPTION OF SYMBOLS 1 Main body 2 Motor chamber 3 Roller 5 Dust collection chamber 6 Air inlet 7 Mounting shaft A (projection body)
8 Mounting shaft B (cylindrical shaft)
10 Caster roller 12 Screw

Claims (1)

A motor chamber with a built-in electric blower, etc., a main body with a paper bag etc. in the front and a dust collection chamber with a suction port connecting the hose, and both sides of the main body can be rotated in the front-rear direction An attached roller; a detent provided at a tip of a downward projecting body formed in a front portion of the bottom surface of the main body ; and a shaft body provided with a recess; the detent and the shaft body the fitted and the provided recesses, fixed to the shaft member and the projecting member, an electric vacuum cleaner provided with a caster roller was mounted rotatably on the shaft body.

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