JPS645569Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field This invention relates to a vacuum cleaner, and particularly relates to an improvement in the assembly structure of the vacuum cleaner body.

(b) Conventional technology A general vacuum cleaner for household use has a horizontal, approximately cylindrical structure, with a storage section for sucked up dust at the front and an exhaust motor fan at the rear. The device is installed.

The conventional vacuum cleaner case was developed in 1982.
As shown in No. 56849, etc., it was molded into front and rear parts, and a part was provided at the rear to support and store the motor assembly and cord reel assembly. In other words, in the vacuum cleaner shown in Utility Model Application Publication No. 56-56849, a blower chamber and a cord winding device chamber are provided at the rear of the vacuum cleaner main body case, and the partition wall that separates them and the rigidity of this partition wall are used. The ribs and other parts used to hold it were intricately molded into one piece.

(c) Problems to be solved by the invention However, the mold for plastic molding of a case with such an intricate structure of partition walls and ribs requires complicated parting design and undercut treatment. In addition to being expensive, the mold itself was also complex, which hindered the efficiency of molding operations. In addition, the formed case is prone to defects such as sink marks due to the partition walls and ribs, and to prevent this, it is necessary to lengthen the cooling time or use expensive materials with little elasticity. This caused further inefficiency in work and increased costs.

The purpose of this idea was to divide the vacuum cleaner body into three parts (front and back), attach the motor assembly and cord reel assembly only to the center of the body, and store the rear part of the cord reel assembly in a separate case. As a result, it is an object of the present invention to provide a vacuum cleaner in which the structure of each component is simplified, the manufacturing cost is reduced, and the forming process is simplified.

(d) Means for solving the problem This invention consists of a front part of the vacuum cleaner body (hereinafter referred to as the "front part of the main body") that stores the inhaled material sucked in from a suction port provided at an appropriate location, a motor assembly, A central part of the vacuum cleaner body (hereinafter referred to as "main body central part") to which an exhaust device including a cord reel assembly is attached and detachably connected to the front part of the vacuum cleaner body, and a connecting member attached to the central part of the vacuum cleaner body. and a rear part of the vacuum cleaner body (hereinafter referred to as the "rear part of the main body") which is connected to each other and covers the back of the exhaust device, and the front part, the center part, and the rear part of the main body are each connected in the lateral direction. and, the motor assembly is fixed to a mounting portion provided at the center of the main body by a support member, and the front part of the cord reel assembly is stored in the cord reel storage section at the center of the main body. and a rear portion thereof is housed in a cover fixed to the cord reel storage portion by the support member.

(e) Function The vacuum cleaner of this invention has the following features.

Since the motor assembly and cord reel assembly are attached only to the center of the main body, the rear part of the main body only needs to function as a cover for these parts.Furthermore, there is no need to support heavy parts such as the motor, so ribs, etc. are formed. There is no need to do this, the structure can be simplified, and mold design and molding work can be made easier.

Further, a mounting portion for a motor assembly and a cord reel storage portion are provided in the center of the main body. The mounting part may be formed toward the rear from the center of the main body (in this direction because it protrudes with respect to the mounting direction of the motor assembly) as a protruding part for fixing the support material that holds down the motor assembly, and The cord reel storage section is open to the rear. In this way, all the protrusions protrude in the front-rear direction. Furthermore, since the case is fixed by the support material, a mounting member dedicated to the case is not required. This makes it possible to simplify the structure and facilitate mold design and molding work.

(f) Embodiment FIG. 1 is an exploded perspective view of a vacuum cleaner that is an embodiment of this invention, and FIG. 2 is a schematic sectional view of the same vacuum cleaner.

The vacuum cleaner of this embodiment has a main body front part 1 on the suction side.
It consists of a main body central part 2 on the exhaust side and a main body rear part 3, and is assembled by connecting these together in the lateral direction. The front part 1 of the main body is a container that stores the substance to be inhaled from the suction port 4 provided at the front end, and a flexible leg wheel 9 whose wheel direction can be changed 360 degrees is attached to the lower part of the container.
A suction port packing 5 is attached to the suction port 4 inside the main body front portion 1 by screwing through a packing pressing plate 6. A net-shaped pre-filter 7 and a main filter 8 are detachably attached to the opening of the front portion 1 of the main body. The main body front part 1 is detachably connected to the main body central part 2 by a clamp mechanism including a clamp 10 provided at the upper front end of the main body central part 2. An engaging protrusion 11 is formed at the lower end of the front body 1 near the opening.
When connecting the main body central part 2, the engaging protrusion 1
1 is fitted into a hole in a locking piece 12 at the lower front end of the central portion 2 of the main body. A filter packing 13 is attached to the periphery of the main filter 8 on the exhaust side, and by bringing the filter packing 13 into close contact with the vicinity of the opening of the main body front portion 1, the periphery of the main filter 8 is sealed.

The clamp 10 has a grip portion 15 on its upper portion, is formed in a substantially U-shape, and is pivotally supported by a shaft portion 14 provided at the upper portion of the central portion 2 of the main body. A spring 17 is attached between the spring contact part 16 of the clamp 10 on the side of the main body center part 2 and the upper part of the main body center part 2, and the spring 1
7, the engaging hook portion 18 of the clamp 10 is connected to the center portion 2 of the main body.
The clamp 10 is urged to rotate inward. A protrusion 19 is protruded from the outer periphery of the opening of the main body front part 1, and the engagement hook part 18 of the clamp 10 is engaged with the protrusion 19 with the locking piece 12 hooked on the engagement convex part 11. Therefore, the front part 1 of the main body is the center part 2 of the main body.
Strongly connected with. Also, when the knob 15 of the clamp 10 is pushed in the horizontal direction, the clamp 10 moves to the shaft 14.
The front part 1 of the main body is separated from the center part 2 of the main body by rotating around the central part 2 of the main body. As mentioned above, since the clamp mechanism including the clamp 10 that engages with the protrusion 19 on the outside of the main body is provided on the central part 2 side of the main body, it is easier to store the inhaled material than when the clamp 10 is attached to the front part 1 side of the main body. The effective internal volume of the front part 1 of the main body can be maximized.

The central part 2 of the main body has an inlet 20 facing the main filter 8, and a motor assembly 21 as an exhaust device is installed on the back side of the inlet 20 via a vibration-proof rubber 22.
are fixed with screws using a fixing ring 24. Further, the cord reel assembly 23 is covered with a cord reel cover 25, which will be described later, and is inserted next to the mode assembly 21. The engaging protrusion 26 formed on the side surface of the cord reel cover 25 is connected to the hooking piece 27 of the fixing ring 24.
The cord reel assembly 23 is fixed together with the motor assembly 21 via the cord reel cover 25 by hooking the cord reel assembly 23 onto the cord reel cover 25 and fixing the fixing ring 24 with screws. A fixing ring (supporting member) 24 and a cord reel cover 25 are integrated with an engaging convex portion 26 and a hook piece 27 to form a fixing member. Since the fixing member simultaneously fixes the motor assembly 21 and the cord reel assembly 23, ease of assembly is improved. In this manner, the motor assembly 21 and the cord reel assembly 23 are assembled into the main body central portion 2. A fixing base 28 for fixing the fixing ring 24 with screws is provided inside the main body central portion 2. This fixing base 28 is a base that protrudes rearward from inside the main body central portion 2, and has a female screw portion provided at its tip to receive a screw for fixing the fixing ring 24.

A handle part 32 is integrally molded on the upper part of the central part 2 of the main body, and the handle part 32 is combined with a handle part 33 of the rear part 3 of the main body to form a handle of the main body of the vacuum cleaner. Further, a body switch 34 and a brake release button 35 for the cord reel assembly 23 are provided near the handle portion 32. Screw guides 29 and 30 are formed inside the handle portion 32 to insert screws for connecting the center portion 2 of the main body to the rear portion 3 of the main body. Also,
A similar screw guide 31 and the like are also formed at the lower part of the main body central portion 2. The central part 2 of the main body has the end face of the opening on the handle part 32 side connected to the rear part 3 of the main body with the motor assembly 21 and the cord reel assembly 23 installed.
For example, when the mating surfaces of
0 faces the threaded portion 36 of the rear part 3 of the main body. The center part 2 of the main body and the rear part 3 of the main body are butted against each other with their mating surfaces, and in this state, screws as connecting members are inserted into the screw guides 29, 30, 31, etc., and screwed into the threaded parts corresponding to each screw guide. As a result, the main body center portion 2 and the main body rear portion 3 are connected. The main body front part 1 and the main body central part 2 are attached and detached as appropriate during use, but the main body central part 2 and the main body rear part 3 are separated from each other by a motor assembly 21 and a cord reel assembly 23 during the manufacturing stage.
are incorporated and connected.

The rear part 2 of the main body is a cover container that covers the motor assembly 21 and the cord reel assembly 23 assembled in the central part 2 of the main body, and has the handle part 33 formed at the top and an exhaust port 39 at the rear. Wheels 37 and 38 are attached to the lower part of the rear part 3 of the main body.
An opening 40 for forming a plug outlet is formed at the rear of the upper part of the rear body 3. As shown in FIG. 3, the cord reel cover 25 has a semicircular side portion that covers both sides of the cord reel assembly 23, and a circumferential portion that covers the cord winding surface of the cord reel assembly 23. . A notch is formed along the circumference in a part of the circumferential portion, and a step portion 41 is provided that abuts the inner surface near the opening 40 at the terminal end of the notch portion. Furthermore, the stepped portion 4
1 and approximately at the center of the circumference is a convex portion 42.
is installed horizontally. A protrusion 46 is provided on the convex portion 42 in the vicinity of the cut portion of the circumferential portion and close to the stepped portion 41 . When connecting the rear part 3 of the main body to the central part 2 of the main body, a cord is pulled out from the cord reel assembly 23 and a plug 4 is attached to the tip of the cord.
3 is taken out from the opening 40, the main body center part 2 and the main body rear part 3 are connected.

FIG. 4 shows a cross section around the opening 40 when the main body rear part 3 is connected to the main body central part 2. When the main body rear part 3 is connected to the main body center central part 2, the tip of the convex part 42 contacts the locking piece 44 at the rear of the opening 40, and the stepped part 41 contacts the locking piece 4 above the opening 40.
A cord outlet 47 is formed between the protrusion 46 of the protrusion 42 and the locking piece 45. The protrusion 46 regulates the size of the card outlet 47 so that the plug 43 is not drawn inward from the cord outlet 47 when the cord is wound in, and serves as a stopper (cord stopper) for the plug 43. As mentioned above, the cord reel cover 25 is attached to the cord reel assembly 23.
Because it fixes and covers the rear of it,
The exhaust air can be blocked, thereby preventing fine dust that has passed through the main filter 8 from adhering to the cord reel assembly 23. Further, since the convex portion 42 of the cord reel cover 25 forms the lower part of the cord outlet 47 (cord stopper), the shape of the opening 40 can be simplified and molding can be facilitated.

As described above, in this embodiment, the main body front part, the main body central part 2 and the main body rear part 3 are connected laterally to form an integrated vacuum cleaner. A motor assembly 21 and a cord reel assembly 23 are attached to the central part 2 of the main body, and by hooking the cord reel cover 25 on the fixing ring 24 and fixing both with an integrated fixing member, Assembly work can be simplified. Further, in this configuration, since the electrical parts are concentrated in the central part 2 of the main body, it becomes easy to check the wiring during assembly, and it is possible to prevent lead wires from getting caught during assembly of the main body.

Further, the rear half of the cord reel 23 is housed in a cord reel cover 25, and the cord reel cover 25 is fixed by the fixing ring 24, so the front half of the cord reel 23 is housed in the central part 2 of the main body. Since it is only necessary to form the partition wall and the fixing base 28 (and the number of ribs that support them), the structure is simplified, and the mold design and molding work can be simplified. In addition, these partition walls and fixing base 28 (and ribs) are located at the center of the main body 2.
Since it is formed so as to protrude rearward from the internal front wall, even if a sink mark occurs due to a cut wall or the like, it will not be recognized as a product after assembly and the appearance will not be impaired.

Further, since no parts are incorporated inside the rear part 3 of the main body, and the lower surface of the cord outlet 47 is formed by the cord reel cover 25, the structure can be extremely simplified, and there are ribs etc. There is no need to form.

In this way, the main body center part 2 and the main body rear part 3 are
Since sink marks are less likely to occur and there is no effect from the occurrence of sink marks, the cooling time during molding of the central part 2 and the rear part 3 of the main body can be shortened, and resins such as polypropylene, which have a high shrinkage rate but are inexpensive, can be used as molding materials. It is also possible to use different materials, and the cost of materials can be reduced.

(g) Effect of the invention As described above, according to this invention, the main body of the vacuum cleaner is divided into three parts, and the motor assembly and cord reel assembly are attached only to the central part of the main body, so that the rear part of the main body is covered with these parts. Furthermore, since there is no need to support heavy components such as a motor, there is no need to form ribs or the like, and the structure can be simplified. mold design,
Molding work can be facilitated.

In addition, a mounting part for the motor assembly and a cord reel storage part are provided in the center of the main body, but the mounting part may be formed as a protruding part from inside the center of the main body towards the rear, and the cord reel storage part is Since the front half of the cord reel can be opened toward the rear simply by storing it, the central part of the main body can be formed with only irregularities in the front and back direction. Also,
Since the case of the cord reel assembly is secured together by the support of the motor assembly, a dedicated attachment point for the case is not required. As a result, the structure of the central portion of the main body can be simplified, and mold design and molding work can be facilitated.

Furthermore, since the structure is simple and has almost no ribs, it is not affected by sink marks, and relatively inexpensive materials such as polypropylene can be used as the molding material, contributing to cost reduction.

[Brief explanation of the drawing]

Fig. 1 is an exploded external perspective view of a vacuum cleaner that is an embodiment of this invention, Fig. 2 is a partial side sectional view of the vacuum cleaner, and Fig. 3 is a cord reel cover 25 and the rear part of the vacuum cleaner. A perspective view of a part of 3.
FIG. 4 is a partial sectional view of the vicinity of the opening 40 in the rear part 3 of the main body when the cord outlet is formed. DESCRIPTION OF SYMBOLS 1... Main body front part, 2... Main body central part, 3... Main body rear part, 21... Motor assembly, 23... Cord reel assembly, 24... Fixing ring, 25... Cord reel cover, 28... ...Fixed stand.

Claims (1)

[Scope of Claim for Utility Model Registration] A front part of the vacuum cleaner body that stores the inhaled material sucked in from a suction port provided at a suitable location, and an exhaust device including a motor assembly and a cord reel assembly is attached to the front part of the vacuum cleaner body. a central part of the vacuum cleaner body that is detachably connected to the central part of the vacuum cleaner body; and a rear part of the vacuum cleaner body that is connected to the central part of the vacuum cleaner body by a connecting member and covers the back part of the exhaust device; The front part of the main body, the center part of the vacuum cleaner main body,
The rear parts of the vacuum cleaner main body are connected in the lateral direction, and the motor assembly is fixed to a mounting part provided in the center of the vacuum cleaner main body by a support member, and the cord reel assembly is The front part thereof is stored in the cord reel storage section in the center of the vacuum cleaner body,
A vacuum cleaner characterized in that a rear portion of the vacuum cleaner is housed in a cover fixed to the cord reel storage portion by the support member.