JPS6110588Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum cleaner, and more particularly to an improvement in the mounting structure of a bumper made of an elastic member that protrudes from the outer wall surface of the main body case and protects the outer wall surface.

This type of vacuum cleaner drives an electric blower built into the main body case, and its suction force sucks in dust along with air, collects this dust in a dust collection case, and then collects the air filtered in this case. is configured to be discharged to the outside from an exhaust port through an exhaust air path.

In such vacuum cleaners, when moving on the indoor floor, the main body case collides with furniture, etc., and there is a risk that the case may be subjected to impact or damage.

For this reason, conventionally, a bumper made of an elastic material that protrudes outward is installed on the wall part of the main body case that protrudes outward. The bumper is sandwiched between the joints of the upper and lower cases, but simply sandwiching the bumper between the joints of the upper and lower cases does not ensure that the bumper is fixed. Sometimes it comes off. In addition, the bumper cannot be clamped with uniform tightening force, which may cause deterioration of the bumper, and the upper and lower cases cannot be airtightly connected.

Therefore, in view of the above-mentioned circumstances, the present invention is designed so that a predetermined gap is formed between the joint surfaces of the upper and lower cases forming the main body case when both cases are joined together, and an engaging part of the bumper is formed. In addition, it is an object of the present invention to provide a vacuum cleaner in which the bumper is securely fixed so as not to be detachable, and the bumper is effectively tightened.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 5.

In FIG. 1, reference numeral 1 denotes a main body case of a vacuum cleaner which is divided into front and rear parts, consisting of a front case A and a rear case B.

Reference numerals 2 and 3 in the figure represent bumpers made of elastic members, and in this embodiment, the mounting structure thereof will be described below based on a rear case B that is divided into upper and lower halves. Rear case B is the lower case of 2 shown in Figures 2 and 3.
Consists of 3 upper case and 4 rear cover,
Each of these is integrally formed from synthetic resin.

In the lower case 2, 5 is a lower partition wall that partitions a chamber 6 in which an electric blower (to be described later) is arranged and a chamber 7 in which a cord winding device is arranged, and 8 is a front wall of the lower case 2 corresponding to the blower chamber 6. The opened lower air suction port, 9 is a rib for fixing a blower and a relay for controlling ON/OFF of the blower, and 10 is a wheel attached to the lower side of the lower case 2.

In the upper case 3, 11 is an upper partition wall that partitions the blower chamber 6 and the cord winding device chamber 7, 12 is an upper air suction port, and 13 is a rib for fixing the blower.

In the rear cover 4, 14 is a handle formed by recessing the rear wall surface, 15 is a rib for fixing a blower and a relay, and 16 is an outlet for a power cord wound and supported by a cord winding device.

The above upper and lower cases 3, 2 and rear cover 4 are assembled as shown in FIGS. 2 and 4. In this case, the upper and lower covers 3 and 2 are fixed to each other by screwing 25 screws inserted through the 2 screw mounting holes 24 of the lower case into the bosses 26 of the upper case 3, as shown in FIG. 4D.

The upper and lower partition walls 5 and 11 match each other to form a blower chamber 6 and cord winding device chamber 7, and upper and lower air suction ports 12 and 8.
meet to form 18 slit-like air suction ports.

In FIG. 4, reference numerals 20 and 21 are arranged in the blower room 6, and when the upper and lower cases 3, 2 and the rear cover 4 are assembled, the electric blower and relay are fixed by the ribs 9, 15, 13, and 22 is a cord winding. A power cord that has been wound and supported by a cord winding device disposed in the winding device chamber 7 is pulled out from the cord outlet 16.

In the present invention, the bumper 23 is mounted in the following manner.

That is, in FIG. 2, FIG. 3, and FIG.
A plurality of 27 stepped protrusions consisting of a small diameter portion 27b and a small diameter portion 27b are provided at appropriate intervals, and 28 recesses that can fit into the small diameter portion 27b of the stepped protrusion 27 are provided on the joint surface of the lower case 2.

On the other hand, an attachment hole 23a is provided at the inner end of the bumper 23, into which the large diameter portion 27a of the stepped projection 27 can fit.

Therefore, this bumper 23 is attached to its mounting hole 23a.
is fitted into the large diameter part 27a of the stepped protrusion 27 of the upper case 3 and held on the joint surface of the upper case 3, and when the upper case 3 and the lower case 2 are assembled, the small diameter part 27b of the stepped protrusion 27 is Recess 28 of lower case 2
Insert into.

In this state, as described above, the upper case 3 and the lower case 2 are connected using fasteners such as screws 25,
The upper and lower cases 3 and 2 are crimped and clamped between the mutual joint surfaces. In this case, as is clear from FIG. 5, the bumper 23 protects the main case from external impact since the main case has a protrusion having a flange on the outside.

According to the mounting structure of the bumper 23 as described above, when the upper case 3 and the lower case 2 are connected, a predetermined gap is formed between the joint surfaces of the two, so that the bumper 23 can be tightened. The bumper 23 can be crimped and clamped with a substantially uniform tightening force without excessive force, and the joint surfaces can be joined airtightly, and the bumper 23, which is an elastic member, can be prevented from being overtightened. can prevent deterioration. In this case, the thickness of the inner end of the bumper 23 may be made approximately equal to or slightly larger than the distance between the joint surfaces of the upper and lower cases 3 and 2.

Further, since the bumper 23 is fitted and supported by the stepped projection 27, there is no fear that it will easily come off.

Although the bumper 23 is attached to the rear case B in the above description, the bumper 23 may also be attached to the front case A with a similar configuration.

As described above, this invention has two parts: the upper case and the lower case.
In a vacuum cleaner equipped with a split main body case, a plurality of stepped protrusions consisting of a large diameter portion and a small diameter portion are provided at appropriate intervals on one of the mutual joint surfaces of the upper case and the lower case. , a plurality of recesses into which the small diameter portion can fit are provided on the other side of the joint surface at the spacing, and mounting holes having approximately the same diameter as the large diameter portion are provided at the spacing, and the recesses are substantially the same as the large diameter portion. A bumper made of an elastic member having a thickness and a protrusion on the outside of the main case is provided between the joint surfaces, and the bumper is crimped and clamped between the upper and lower case joint surfaces with uniform tightening force. This prevents deterioration of the material due to over-tightening of the bumper, and also improves the upper and lower parts.
The lower case joint surface can be reliably joined while maintaining airtightness, and the bumper can be held between the lower case and the lower case.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing the appearance of a vacuum cleaner according to an embodiment of the present invention, FIGS. 2 and 3 are diagrams showing the structure of the lower case, rear cover, and upper case of the rear case, and FIG.
The figures show the internal structure of the rear case, where A is a plan sectional view, B is a front sectional view, C is a left side view, D is a right side sectional view, and FIG. 5 is an enlarged sectional view of the bumper portion. In the figure, 1 is the main case, 2 is the lower case,
3 is the upper case, 4 is the rear cover, 23 is the bumper,
23a is a mounting hole, 27 is a stepped projection, 27a is a large diameter portion, 27b is a small diameter portion, and 28 is a recessed portion. In the figure,
The same reference numerals indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] In a vacuum cleaner having a two-part main body case consisting of an upper case and a lower case, a stepped protrusion consisting of a large diameter portion and a small diameter portion is provided on one side of the mutual joint surface of the upper case and the lower case. a plurality of recesses into which the small-diameter portion can fit are provided at appropriate intervals on the other joint surface, and mounting holes having approximately the same diameter as the large-diameter portion are provided at the spacing. A vacuum cleaner characterized in that a bumper made of an elastic member having approximately the same thickness as the large diameter portion and having a protrusion on the outside of the main body case is provided between the joint surfaces.