JPH09201318A - Vacuum cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate shrinkage deformation from being produced by a cut-out part, by providing a guide cover with the cord insertion cut-out part and a plug slip-off prevention part and providing an extending part which extends, at least, from one part towards the other of a pair of opposed ends of the cut-out part so as to be bently deformable. SOLUTION: A guide cover 7 is provided with a cord insertion cut-out part 72 which is formed by being cut out from an upper cylindrical wall 71 along the axial direction at a fixed width, a plug slip-off prevention part 73 which is arranged in the mouth part 7a in the reel 81 side and prevents the plug 88 of the cord 83 inserted from the cutting part 72 from being slipped off, and an inside inclined face 74 for guiding the winding of the cord 83 in relation to the reel 81. The cord 83 is inserted into the plug slip-off prevention part 73 and a flange part 93 having the diameter larger than the outer diameter of the cord 83 is constituted of a rectangular edge part impossible to be inserted. An extending part 75 is arranged in the end of the cord exit part of the cut-out part 72.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention includes a guide cover for winding a cord at a cord outlet of a cleaner body having a cord reel around which a cord of an electric blower is wound.
The present invention relates to an electric vacuum cleaner capable of temporarily fixing a plug in a guide cover during assembly of an electric vacuum cleaner in order to prevent the plug at the tip of the cord from being pulled inward of the main body of the vacuum cleaner.

[0002]

2. Description of the Related Art When assembling a conventional vacuum cleaner,
The cord reel around which the cord of the electric blower is wound is stored in one of the cases of the vacuum cleaner body, for example, in the lower case,
After disposing a tubular guide cover for guiding the winding of the cord between the cord outlet of the case and the reel, the upper case is joined to the lower case to integrally assemble the cleaner body. The cord is locked in the guide cover by the insulating grip of the plug. When assembling the cleaner body, if the cord is wound up on the reel stored in the cleaner body together with the cord by the cord winding mechanism, it cannot be pulled out after the cleaner body is assembled.
Temporary fixing means for temporarily fixing the plug inserted into the guide cover during assembly of the cleaner body is provided.

15 to 17 show an example of a guide cover capable of temporarily fixing the plug in the guide cover. 15 is an external front view, FIG. 16 is a plan view thereof, and FIG. 17 is a rear view thereof. The conventional guide cover 100 has a cylindrical wall 101 on the upper surface.
A cut-out portion 102 for inserting a cord, which is cut out in a constant width along the axial direction, and a plug retaining portion 103 which is provided in a mouth 103 on the reel side and which stops the plug of the cord inserted from the cut-out portion 102 from coming off , An internal inclined surface 104 that guides the winding of the cord around the reel, and the plug retaining portion 103 has a shape in which only the cord is inserted and the insulating gripping portion having a diameter larger than the outer diameter of the cord cannot be inserted. It is configured.

At the time of assembly, the cord is pulled out from the reel and inserted into the guide cover 100 through the cutout portion 102, and the reel and the guide cover 100 are housed in the case of the cleaner body. The plug is locked to the plug retaining portion 103. The guide cover 100 is usually made of synthetic resin, like the case of the cleaner body. In this case, since the guide cover 100 is constantly in contact with the cord and the plug, the guide cover 100 is molded from engineering plastics, particularly polyacetal resin or the like, with an emphasis on abrasion resistance.

[0005]

A conventional guide cover 100 molded from a synthetic resin, particularly a polyacetal resin having a large molding shrinkage, has a large shrinkage deformation immediately after molding, and as shown in FIG. The pair of end faces facing each other approach each other to make it difficult to insert the cord. Further, if the contracted and deformed guide cover 100 is straightened (corresponding state of FIG. 15) and housed in the case of the cleaner body, unnecessary stress is generated in the guide cover 100, so that the strength of the guide cover 100 is reduced and the case is It doesn't fit inside.

An object of the present invention is to mold a synthetic resin,
Another object of the present invention is to provide an electric vacuum cleaner equipped with a guide cover that does not contract and deform due to a cutout for inserting a cord.

[0007]

According to the present invention, there is provided a cleaner body, an electric blower and a cord reel portion housed in the cleaner body, and the cord reel portion has a cord having a plug at a tip thereof. A reel around which the cord is wound, a reel supporter that rotatably supports the reel inside the cleaner body, and a cord outlet formed on the upper portion of the cleaner body and the reel. It consists of a cylindrical guide cover made of synthetic resin that guides the winding of the cord around the reel that is installed, and the guide cover is for inserting the cord that cuts the cylindrical wall of the guide cover with a certain width along the axial direction. And a plug slip-out preventing portion that is disposed at the mouth of the reel and that prevents the plug of the cord inserted through the cut-out portion from coming off, and further includes a pair of opposing cut-out portions. Vacuum cleaner is provided which is characterized by comprising an extending out bending deformable extending portion toward the other from at least one surface.

The vacuum cleaner body according to the present invention comprises a case for accommodating an electric blower, a cord reel and the like.
Those made of synthetic resin are preferred. This case may be divided into two or more so as to be joined from the front, the rear, the top, the bottom, the left, the right, etc., or the direction in which these are combined. In the cord reel according to the present invention, a cord having a plug at its tip is wound, and the cord reel is provided with an urging means for winding the cord, and the cord pulled out from the cord outlet of the cleaner body is urged by the urging means. To reel it up,
Those having a winding mechanism are preferable.

The plug according to the present invention has an insulating grip portion attached to one end of a cord wound around a reel and having an outer diameter larger than that of the cord. The cord outlet in the present invention is preferably formed in a shape that allows the plug to be pulled out easily, and may be formed at any part of the cleaner body. Preferably,
It is the rear part of the cleaner body that forms the exhaust side of the electric blower.

The guide cover according to the present invention is opened in the winding direction so that when the cord drawn out from the cord outlet is wound around the reel by the cord winding mechanism, it is guided along the winding direction of the reel. A tubular member having openings at both ends is preferable. The opening on the reel side is preferably configured with a shape and diameter that prevents the plug at the tip of the cord wound on the reel from passing through the guide cover and entering the inside of the cleaner body. The opening on the opposite side is preferably configured with an enlarged shape and diameter so that winding resistance does not occur between the cord and the plug wound on the reel.
The guide cover is preferably molded using engineering plastics having excellent friction and wear resistance, and specifically, Ny6 (6 nylon) and Ny66 (66).
Examples thereof include nylon), POM (polyacetal), and PBT (polybutylene terephthalate).

The cord reel portion may be wound by hand, or may be wound by rotating the reel by a rotating force applying means such as a spiral spring stretched between the reel and the reel support. It may be performed. In this case, it is preferable to have a brake mechanism that controls the winding of the cord pulled out from the guide cover. Also,
The reel support may be provided with a circuit board that connects one end of the cord to the electric blower. The cutout portion in the present invention has a width that is the same as or slightly larger than the outer diameter of the cord, and is preferably formed substantially linearly. It is preferable that the plug retaining portion is formed of an edge portion of the reel side opening portion that has a shape and a size that allows only the cord to pass therethrough and does not allow the insulating gripping portion having a diameter larger than the outer diameter of the cord to pass therethrough. .

The extension portion in the present invention is constructed so that it can be bent and deformed for the insertion of a cord, and when the guide cover formed of synthetic resin undergoes contraction deformation immediately after its formation, the extension portion is formed. Those having a function of coming into contact with the other end surface to prevent further contraction and deformation are preferable. The extending portion may extend from only one end surface toward the other end surface at the pair of end surfaces facing each other of the cutout portion, or may extend from the both end surfaces toward the other end surface. Good. Further, the extending portion may extend from the entire end surface, may extend from a part of the end surface, or may extend from any position such as the end portion of the end surface or the central portion. Good. Examples of the shape of the extending portion include a rod shape, a flat plate shape, a tongue shape, and an acute angle protrusion shape, and it is preferable that the upper surface thereof be smooth and facilitate insertion of the cord. The extending portion preferably extends in a posture (angle) in which the axis of the extending portion is substantially orthogonal to the other end surface of the cutout portion. The length of the extension part, the distance from the tip to the end face of the opposite cutout part depends on the material, shape, and shape of the guide cover due to shrinkage deformation immediately after molding.
Since it depends on the wall thickness and size, it is preferably set appropriately.

The cleaner body is fitted in a cutout portion of a guide cover arranged between the cord outlet and the reel,
It is preferable to provide a cord slip-out preventing portion for stopping slipping out of the inserted cord. The cord slip-out preventing portion according to the present invention, when fitted in the cutout portion of the guide cover, prevents the inserted cord from slipping out and prevents the guide cover from being deformed due to bending, so that the cord is firmly housed in the cleaner body. What is possible is preferable, and a shape and a material that do not resist the insertion of the cord and the plug in the guide cover are preferable.

It is preferable that the extending portion is provided with a bendable thin-walled portion formed by resin molding integrally with the guide cover near one end surface of the cutout portion. The thin portion in the present invention is preferably formed in a strip shape in parallel with the end face of the cutout portion, may be provided adjacent to the end face, or may be provided between the end face and the tip of the extending portion. May be. The thin portion may be easily cut.

When assembling the electric vacuum cleaner of the present invention, the electric blower and the cord reel portion are housed in one of the cases of the cleaner body, and the guide cover is arranged between the cord outlet portion and the reel. To do. The cord wound around the cord reel is inserted into the cutout portion of the guide cover, and the plug at the tip is locked to the plug retaining portion of the mouth portion on the reel side so that the plug can be pulled out from the cord outlet portion of the guide cover. At this time, since the extending portion extending from the end surface of the cutout portion can be bent and deformed, it is easy to insert the cord. Next, the cord slip-out prevention portion is fitted into the cutout portion of the guide cover to stop the cord from being pulled out. When the contraction deformation occurs immediately after the guide cover is molded, the guide cover disposed between the cord outlet and the reel prevents the contraction deformation from being caused by the extension portion contacting the other end surface. The shrinkage deformation can be minimized.

If the extending portion has a bendable and deformable thin portion formed by resin molding integrally with the guide cover near one end surface of the cutout portion, the extending portion can be bent with a slight force. The cord can be inserted through the cutout.
If the guide cover is formed of polyacetal resin or the like having excellent friction and wear resistance, damage and deterioration of the guide cover can be suppressed by the cord and plug wound on the reel.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on an embodiment shown in the drawings. The present invention is not limited to this. 1 to 3 show the appearance of the vacuum cleaner body 10. The cleaner body 10 is mainly composed of an upper case 1, a lower case 2 and a rear case 3 made of synthetic resin, which are vertically joined to each other to form an air passage inside, and an exhaust port is provided on the left and right of the rear case 3. 3a and a cord outlet portion 3b, and a cleaning tool connection opening portion 5 is formed in the front portion of the lower case 2. Inside the electric vacuum cleaner body 10 (not shown), a dust collection chamber 6 communicating with the cleaning tool connection port 5 is provided.
And a blower housing chamber 9 that is formed behind the dust collection chamber 6, that is, on the downstream side of the blower path and that houses the electric blower (not shown) and the cord reel portion 8.

The upper case 1 has a cover 1a that covers the upper part of the dust collecting chamber 6 so as to be openable and closable, and a cover 1 that covers the upper part of the blower housing chamber 9.
The lid 1a is formed so as to be vertically rotatable about a hinge portion at the front of the cover 1b as a spindle for replacing the dust collecting bag. On the upper part of the cover 1b, a handle 11 and an opening 12 for a brake release button of a cord reel portion 8 described later are formed (FIG. 1).

The cord reel portion 8 is arranged between the blower and the wheel 13 in the blower housing chamber 9, and as shown in FIG. 4, a reel 81, a reel support 82, and a cord 83 wound around the reel 81. , And a guide cover 7. The reel 81 has a support shaft 8 protruding toward the surface of the reel support 82.
5 is rotatably supported and is connected to a reel support body 82 by a spiral spring (not shown), and an urging force for winding the drawn cord 83 around the reel 81 is applied. A brake friction surface 81 a, which is an uneven surface, is formed on the outer peripheral edge of the reel 81. A brake mechanism 86 is attached to the upper portion of the reel support body 82 to brake the pulled-out cord 83 against the above-mentioned winding biasing force and hold it at an arbitrary length.

The brake mechanism 86 is provided with a lever 62 having a substantially "V" shape, which is rotatably supported around a support shaft 61 projecting to the back side of the reel support 82, and a brake release button 63 above the lever 62. And a compression coil spring 65 arranged between the upper portion of the reel support 82 and the pressing portion 64, and exposed from the opening 12 of the upper case 1. When the brake release button 63 is pressed, the lever 62 rotates in the direction of the broken line against the urging force of the compression coil spring 65, and the pressing portion 64 pressing the brake friction surface 81a moves away from the brake friction surface 81a and the reel 81. The brake is released.

A plug 88 is arranged at the other end of the cord 83. The plug 88 is a grip portion 9 made of synthetic resin.
1 and an insertion portion 92 at the tip of the grip portion 91, and a large-diameter flange portion 93 is formed at the base portion of the grip portion 91. Between the reel 81 and the cord outlet portion 3b, a guide cover 7 having a support portion inside the rear portion of the upper case 1 is attached.

The guide cover 7 has a cord 8 pulled out.
A rectangular shape having openings 7a, 7b through which the cords 83 are inserted along the winding direction so that the cords 83 are guided in the winding direction of the reel 81 when 3 is wound around the reel 81 by the urging force of the spiral spring. It is a rectangular tubular member having a cross section.
The external appearance of the guide cover 7 is shown in 6 views of FIGS. 5 shows the front, FIG. 6 shows the plane, FIG. 7 shows the bottom, FIG. 8 shows the right side, FIG. 9 shows the left side, and FIG. 10 shows the back.

The guide cover 7 has a cut-out portion 72 for inserting a cord, which is formed by cutting out a cylindrical wall 71 on the upper surface with a constant width along the axial direction, and a cut-out portion 72 which is provided at the mouth portion 7a on the reel 81 side. The plug 83 of the cord 83 for preventing the cord 88 from coming off, and the internal inclined surface 74 for guiding the winding of the cord 83 around the reel 81. Flange portion 93 having a larger diameter than the outer diameter of
Has a rectangular edge that cannot be inserted. Cutout 7
An extension portion 75 is arranged at the end of the cord 2 on the cord outlet portion 3b side.

As shown in FIG. 11, the extending portion 75 has a pair of smooth end faces 72a and 72b of the cutout portion 72 that face each other.
It is a rectangular flat plate-shaped member extending from one end face 72a toward the other end face 72b, and the axis of the extending direction extends at an angle substantially orthogonal to the end face 72b.
The tip portion of the extending portion 75 and the facing end surface 72b are slightly separated. Both the upper surface and the lower surface of the extending portion 75 are smooth. A thin wall portion 75a is formed on the extending base portion of the end surface 72a so that the extending portion 75 can be easily bent and deformed by a pressing force applied from the outside. The thin portion 75a has an end surface 72
It is formed by a linear groove formed adjacent to a. The extending portion 75 is formed integrally with the guide cover 7 from polyacetal resin (POM). A notch portion 76 for inserting a cord is formed in the upper portion of the mouth portion 7a on the reel 81 side so as to rise substantially vertically from the edge portion and communicate with the rear end of the cutout portion 72. Also, the cord exit portion 3b
On the upper and lower wall surfaces near the mouth portion 7b on the side, rectangular locking holes 77 for locking the inside of the rear case 3 described later are formed.

The rear case 3, as shown in FIGS. 12 (inside view front view) and 13 (plan view), has a cord outlet 3b.
A connection port 31 is provided which is connected to the port 7b of the guide cover 7. On the upper part of the connection port portion 31, the electric vacuum cleaner 10
Is provided with a cord slip-out preventing portion 32 that extends substantially horizontally in the blower housing chamber 9 toward the front part of the. The cord retaining portion 32 is formed of a rod-shaped rectangular flat plate, and is arranged at a position corresponding to the cutout portion 72 of the guide cover 7 attached to the connection port portion 31. The width of the cord retaining portion 32 in the direction orthogonal to the extending direction is substantially constant, and the cutout portion 7
The extension length is slightly smaller than 2, and is set so as to reach the reel 81 side opening portion 7a of the cutout portion 72 of the guide cover 7 attached to the cord outlet portion 3b. Locking claws 33 are formed at the upper and lower opening edges of the connection port portion 31 so as to be able to reversely engage with the locking holes 77 of the guide cover 7 fitted into the connection port portion 31. At the lower end of the rear case 3,
A pair of left and right fixing pieces 34 fixed to the lower case 2 are projected downward.

When assembling the electric vacuum cleaner 10, the electric blower and the cord reel portion 8 are housed in the lower case 2. The cord 83 wound around the reel 81 is inserted into the cutout portion 82 of the guide cover 7, and the plug 88 is locked to the plug removal prevention portion 73. At this time, the cutout portion 82
Since the extending portion 75 extending from is bendable and deformable using the thin portion 75a as a hinge portion, the cord 83 can be easily inserted. Next, the guide cover 7 in which the cord 83 is inserted
The mouth portion 7b of the rear case 3 is fitted to the connection portion 31 of the rear case 3. As a result, the cord slip-out preventing portion 32 extending from the rear case 3 is inserted into the cutout portion 72 of the guide cover 7 to close the cutout portion 72 and prevent the cord 83 from coming off. Since the extension portion 75 is located above the inserted cord retaining portion 32, it does not appear in appearance. For this reason,
It does not affect the pulling out and winding of the cord 83. The rear case 3 to which the guide cover 7 is attached is fixed to the lower case 2 by a fixing piece 34 or the like.

When the guide cover 7 contracts and deforms immediately after its molding, the extending portion 75 contacts the other end surface 72b to prevent further contraction and deformation. Therefore, the guide cover 7 is made of a polyacetal resin having a high molding contraction rate. Shrinkage deformation can be minimized. In the above-described embodiment, since the extending portion 75 includes the bendable thin portion 75a formed by resin molding integrally with the guide cover 7 on the end surface 72a of the cutout portion 72, the extending portion 75 can be extended with a slight force. The cord 75 can be inserted into the cutout portion 72 by bending the portion 75. Further, since the guide cover 7 is formed of polyacetal resin, it is excellent in friction and wear resistance and can be prevented from being damaged or deteriorated by winding the cord 83. The cord retaining portion 32 is a cutout portion 72 of the guide cover 7.
After being fitted into the rear case 3, the cord 83 inserted therein is prevented from coming off, and the guide cover 7 is prevented from being deformed due to bending, so that the guide cover 7 is firmly accommodated in the rear case 3.

[0028]

According to the electric vacuum cleaner of the present invention, at the time of assembling the main body of the vacuum cleaner, the cord is inserted into the cutout portion of the guide cover, and the plug at the tip is locked to the plug retaining portion inside the guide cover. At this time, since the extending portion extending from the end face of the cutout portion can be bent and deformed, the cord can be easily inserted. When the guide cover is contracted and deformed immediately after the guide cover is molded, the extension portion abuts the other end face to prevent further contraction and deformation, so that the contraction and deformation can be minimized.

Therefore, even if the guide cover is made of a synthetic resin, particularly polyacetal resin having a high shrinkage deformation rate even though it is excellent in friction and wear resistance, and is provided with a cutout portion for inserting the cord for temporarily fixing the cord. An electric vacuum cleaner provided with a guide cover that does not contract and deform due to the cutout portion is provided.

[Brief description of drawings]

FIG. 1 is an external plan view of an electric vacuum cleaner according to an embodiment of the present invention.

FIG. 2 is an external side view of the electric vacuum cleaner of FIG.

FIG. 3 is an external rear view of the electric vacuum cleaner of FIG.

FIG. 4 is a side view of a cord reel section.

FIG. 5 is a front view of a guide cover.

FIG. 6 is a plan view of a guide cover.

FIG. 7 is a bottom view of the guide cover.

FIG. 8 is a right side view of the guide cover.

FIG. 9 is a left side view of the guide cover.

FIG. 10 is a rear view of the guide cover.

11 is an enlarged view of a main part of FIG. 5, illustrating a thin portion of the guide cover.

FIG. 12 is a front view of the inside of the rear case.

FIG. 13 is a plan view of a rear case.

FIG. 14 is a view corresponding to FIG. 13, showing a state where the guide cover is fixed to the rear case.

FIG. 15 is a front view of a conventional guide cover.

16 is a plan view of the guide cover shown in FIG.

FIG. 17 is a rear view of the guide cover shown in FIG.

FIG. 18 is a view corresponding to FIG. 15, showing a state in which the conventional guide cover is contracted and deformed.

[Explanation of symbols]

 1 Upper Case 2 Lower Case 3 Rear Case 4 Cord Outlet 7 Guide Cover 7a Reel Side Mouth 7b Cord Outlet Mouth 8 Cord Reel 14 Upper Stopper (Plug Main Locking Means) 31 Connection Port 32 Cord Removal Prevention Part 41 Lower stopper (temporary plug fixing means) 72 Cutout part 72a End face 72b End face 73 Plug removal prevention part 75 Extend part 75a Thin part 76 Code insertion cutout part 81 Reel 83 Code 82 Reel support 88 Plug

Claims (2)

[Claims] 1. A cleaner body, and an electric blower and a cord reel portion housed in the cleaner body, wherein the cord reel portion has a cord having a plug at its tip, and a reel for winding the cord. A reel support body that rotatably supports the reel inside the cleaner body, and a cord outlet formed on the top of the cleaner body and the reel, which guides winding of the cord around the reel. And a tubular guide cover formed of synthetic resin, the guide cover having a cut-out portion for inserting a cord and a reel-side opening for cutting a tubular wall of the guide cover with a constant width along the axial direction. A plug slip-off preventing portion that is provided in the cutout portion to prevent the plug of the cord inserted through the cutout portion from coming off, and further, at least one of the pair of end surfaces of the cutout portion facing each other Vacuum cleaner characterized by comprising an extending out bending deformable extending portion toward. 2. The cleaner main body comprises a cord slip-out preventing portion which is fitted in a cutout portion of a guide cover arranged between the cord outlet portion and the reel and which prevents the inserted cord from slipping out. The electric vacuum cleaner according to claim 1.