JP3356380B2 - Cord winding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cord winding device provided with a drum body having a pair of sliding contact points for winding and storing a cord.

[0002]

2. Description of the Related Art Conventionally, as a cord winding device of this type, for example, a configuration described in Japanese Patent Application Laid-Open No. 2-177923 is known.

The cord winding device described in Japanese Patent Application Laid-Open No. 2-177923 discloses one of a pair of drum members having a flange portion protruding in the outer peripheral direction at one end of a substantially cylindrical winding body. At the end of the torso, a disk-shaped mounting base is provided which is located on the central axis and to which a shaft can be mounted. Also, a pair of elastic tongue-shaped contacts are electrically connected to the cord held by inserting the ends from the outer peripheral side to the inner peripheral side of the winding body, and these contacts are attached to the mounting base with screws or the like. Attached to. Then, the drum member is joined to the other end portions of the winding body portion to define a winding portion for winding the cord between the flange portions, thereby forming a drum body. On the other hand, a plate-like mounting portion having a pair of ring contacts slidably connected to the contacts is rotatably mounted on the shaft so as to face the mounting base, and this mounting portion is mounted, for example, in a case of the main body of the vacuum cleaner. The drum body is rotatably arranged.

[0004]

However, in the conventional cord winding device described in Japanese Patent Application Laid-Open No. Hei 2-177923, the step of attaching the contacts connected to the cord to the attaching base, and the attaching base having the contacts attached thereto. And a step of assembling and forming the drum body by joining the drum members having the above-mentioned structure, and a structure for assembling the member and the drum body for attaching the contacts to the mounting table is required, and the productivity cannot be improved. There's a problem.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a cord winding device capable of improving assembly manufacturability by reducing steps.

[0006]

According to a first aspect of the present invention, there is provided a cord winding device which is provided at a position substantially perpendicular to an axial direction with respect to a central axis of the cylindrical winding body. A wheel portion that supports a shaft member, and a pair of flange portions that radially project from the winding body portion and define a winding portion that winds a cord with the outer peripheral surface of the winding body portion are provided. and the drum body, and a rib provided on said wheel portion of the drum body, have a contact that is electrically connected to the cord, the ends of the cord
A mounting base for clamping and fixing between the wheel part and a mounting plate having a contact slidably in contact with the contact and facing substantially parallel to the mounting base and rotatably mounted on the shaft member; A mounting part, and mounting means for mounting the contact point to the mounting base and mounting the mounting base to the rib in substantially parallel opposition to the wheel part;
The mounting means substantially parallel to a wheel portion provided with a rib and positioned substantially perpendicular to the axial direction of the center axis of the cylindrical winding body portion of the drum body, and the shaft portion is mounted on the wheel portion. The contacts are mounted on the mounting base in a manner substantially parallel to the mounting plate of the mounting part rotatably mounted on the shaft member to be supported, and the mounting base is mounted. The mounting base for mounting the contacts is assembled to the drum body, and the assembling manufacturability is improved. Furthermore, when attaching the mounting base to the ribs of the wheel portion of the drum body, the end of the cord is sandwiched and fixed between the mounting base and the wheel portion, so that a separate structure for attaching the cord is not required, and the cord is not required. Attachment can be performed at the same time, which improves assembly manufacturability.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which a cord winding device of the present invention is used in a vacuum cleaner will be described below with reference to the drawings.

In FIG. 3, reference numeral 1 denotes a vacuum cleaner main body, and the vacuum cleaner main body 1 has a lower case 2a having an upper surface opened.
A main body case 2 having a front upper surface opened by an upper case 2b for closing a rear upper surface of the lower case 2a, and an opening of a front upper surface of the main case 2 can be opened and closed. And a lid 3 to be closed. Further, the main body case 2 has a swing wheel 4 that is swingable on the front lower surface, and a rear wheel 5 that is driven by a rear side surface. Further, a handle 7 is provided on the upper part of the main body case 2 so as to be slidable in the vertical direction.
An accessory storage section 9 for storing the accessory 8 is provided.

On the other hand, in the vacuum cleaner main body 1, a dust collecting chamber 12 whose upper part is opened by a partition wall 11 having a lattice-shaped communication port 10 is formed in a front section in the traveling direction of the vacuum cleaner main body 1. In addition, an electric blower chamber 13 is formed behind the dust collection chamber 12. And in the dust collection chamber 12,
A dust collection bag 16 is detachably mounted by a holder 15 pivotally mounted in the dust collection chamber 12.

On the front face of the partition 11, an auxiliary dust collecting filter 18 for covering the communication port 10 is detachably mounted.
Note that the dust bag 16 and the auxiliary dust filter 18 are attached and detached via the upper opening of the dust collection chamber 12.

On the other hand, in the electric blower room 13, an electric blower
Twenty are arranged. The electric blower 20 includes a motor unit 21 (not shown) that rotationally drives a fan, for example, about a shaft, and a fan cover 23 that opens an air inlet 22 that covers the fan.

A motor head 24 substantially at the center of the rear end face of the electric section 21 is formed to project rearward in a columnar shape. An annular rubber support 25 is fitted to the front end of the electric blower 20 at the outer peripheral edge of the front end, and a rubber buffer 26 is attached to the motor head 24 at the rear end of the motor 21. It is attached so as to cover the head 24.

On the other hand, on the lower surface of the upper case 2b, an upper rib front portion 29 projecting downward and having a lower end portion formed in a concave arc shape along the outer peripheral surface of the fan cover 23;
The upper rib rear portion 30 is located rearward of the upper portion 29 and protrudes downward substantially in parallel and has a lower end protruding in a concave arc shape along the outer peripheral surface of the motor head 24 of the electric portion 21.

Further, the upper surface of the lower case 2a is opposed to the upper rib front portion 29 and the upper rib rear portion 30 and protrudes upward toward the upper rib rear portion 30. The upper end is formed in a concave arc shape along the outer peripheral surface of the fan cover 23. The lower rib front part 31 and the lower rib rear part 32 whose upper end part is formed in a concave arc shape along the outer peripheral surface of the motor head 24 of the electric part 21 respectively protrude.

A buffer 26 attached to cover the motor head 24 of the electric blower 20 is sandwiched between the top ends of the upper rib rear portion 30 and the lower rib rear portion 32, so that the rear end of the electric blower 20 is buffered. The upper rib rear part 30 and the lower rib rear part 32 pinch and fix it via 26. Further, the outer peripheral surface of an annular rubber support 25 fitted to the front end of the electric blower 20 is sandwiched by the upper rib front part 29 and the lower rib front part 31, and the front end of the electric blower 20 is supported by rubber. It is sandwiched and fixed between the upper rib front part 29 and the lower rib front part 31 via the body 25.

A front end side of the electric blower 20 is connected to a dust collecting chamber 12 provided with a dust collecting bag 16 for collecting dust sucked together with air at an intake port 22 of the electric blower 20 by a rubber support 25. It is airtightly communicated via 10.

An exhaust chamber 34 is formed in the vacuum cleaner main body 1 behind the electric blower chamber 13 so as to be partitioned, and an outer rear upper surface of the upper case 2b of the vacuum cleaner main body 1 has: An exhaust port communicating with the exhaust port of the electric blower 20 via the exhaust chamber 34
An opening 35 is formed.

Further, in the vacuum cleaner main body 1, a drum chamber is defined by ribs (not shown) which are located on the left side in the traveling direction of the electric blower chamber 13 and protrude from the lower case 2a and the upper case 2b. Have been. In the drum chamber, a drum body 40 around which a power supply cord 39 which is a cord for supplying electric power to the electric blower 20 is provided.

As shown in FIGS. 1 and 2, the drum body 40 is provided with a substantially cylindrical shaft support portion 41, and a flange is provided at an intermediate portion of the outer peripheral surface of the shaft support portion 41 at right angles in the axial direction. A substantially disk-shaped wheel portion 42 that protrudes in a shape is formed. Further, on the outer peripheral edge of the wheel portion 42, a substantially cylindrical winding body portion 43 is provided substantially coaxially with the shaft support portion 41, and is perpendicular to the axial direction both ends of the winding body portion 43 in the axial direction. Substantially disk-shaped flange portions 44a and 44b projecting in a flange shape are formed. The winding body portion 43 and the flange portions 44a and 44b are provided with a winding portion 45 having a concave section in cross section, which is open outward and has an annular shape around which the power cord 39 is wound.
Are formed integrally and the drum body 40 is formed in a substantially bobbin shape. In addition, the power cord 39
The cord insertion hole 46 whose end is inserted from the outer side to the inner side.
Are formed.

Further, the wheel portion 42 is provided with a rib 47 projecting in a substantially cylindrical shape in the same direction as the shaft support portion 41 in a radial direction. A substantially disk-shaped mounting base 48 made of a flame-retardant member is provided on the rib 47 with a screw 49 as mounting means.
It is attached at. This mounting base 48 is provided with a substantially cylindrical positioning portion 50 for inserting the tip of the rib 47 on one surface side, and a resilient tongue-shaped sliding contact on the other surface side. Terminal bases 52, 52 for attaching the contact fittings 51 are provided. Further, the mounting base 48 has through holes 53, 53 corresponding to the inside of the ribs 47 and corresponding to the terminal block parts 52, 52, through which screws 49, 49 are inserted.
A power supply cord 39 wound around the winding portion 45 is connected to the contact fitting 51, and a pedestal portion 55 fixed to the terminal base portion 52 with a screw 49 and projects substantially V-shaped from the pedestal portion 55. And a pair of tongue pieces 56 having elasticity. The mounting base 48 is attached to the rib 47 so as to be substantially parallel to the wheel part 42 with screws 49, 49, and the contact fittings 51, 51 are fixed to the terminal base parts 52, 52.

The drum body 40 has a flange 44 on one end surface side.
A first wall 58 is formed on the side surface of b and projects in a substantially cylindrical shape whose central axis is coaxial with the central axis of the shaft support 41. The first wall 58 is substantially coaxial with the second wall 59.
A substantially cylindrical holding plate 60 having a bottom is attached. By attaching the presser plate 60, an operation chamber 61 in which a coil-shaped spring (not shown) for winding the power cord 39 drawn out from the winding portion 45 is formed, and the first wall 58 and the first wall 58 are formed. The end of the mainspring is located between the second wall 59 and the second main body 59. Further, a brake means (not shown) for stopping the rotation of the drum body 40 is provided on the outer peripheral surface side of the first wall body 58.

A shaft 65 as a shaft member is fitted and fixed to the shaft support 41. The shaft 65 has one end protruding from the end of the shaft support portion 41 and the other end protruding through the holding plate 60 and is fitted and fixed. A notch 66 is formed at one end of the shaft 65, and a pair of resilient engagement pieces 67, 67 are provided. At the tips of the engagement pieces 67, 67, engagement claw 68, 68 are provided, and a groove-shaped engagement groove 69 is formed along the circumferential direction in which the base end sides of the engagement pieces 67, 67 become smaller in diameter. Further, a portion of the shaft 65 protruding from the shaft support portion 41 is formed to have a diameter smaller than the inner diameter of the shaft support portion 41 to form a step portion 71. Also, shaft 65
On the peripheral surface at the other end of the lower case 2a in a groove shape along the circumferential direction.
Further, a mounting groove 72 is provided, which is engaged with and sandwiched by a rib (not shown) that defines a drum chamber provided in the upper case 2b.

Further, a mounting portion 74 made of a flame-retardant member is mounted on the shaft 65. And this mounting part 74
Has a plate-shaped fixed plate portion 75 that is sandwiched between ribs that define drum chambers provided in the lower case 2a and the upper case 2b. Further, at a position deviated from the center of the fixed plate portion 75, a substantially cylindrical shape whose outer diameter is slightly smaller than the inner diameter of the winding body 43 of the drum body 40 and which is fitted inside the winding body 43 is provided. Insertion part of
76 are formed. Further, a substantially disk-shaped mounting plate 77 is formed in the middle of the fitting portion 76. In addition, substantially at the center of the mounting plate 77, the engagement pieces 67, 6 of the shaft 65 are provided.
A fitting portion 78 is formed, which projects in a substantially cylindrical shape and is fitted to a portion having a smaller diameter than the other portion projecting from the shaft support portion 41 on the side where 7 is provided. A portion of the fitting portion 76 that projects substantially cylindrically from the mounting plate 77 to the side where the fitting portion 78 projects is a flange portion 79.

On the inner peripheral edge of the end of the fitting portion 78 on the mounting plate 77 side, an engaging portion 80 is formed which protrudes in a ring shape inward and detachably engages with the engaging groove 69 of the shaft 65. Have been.

Further, a pair of ring-shaped ring contacts 82, 82 having different diameters, which are contacts forming a sliding contact, are formed concentrically on the surface of the mounting plate 77 where the fitting portion 78 protrudes. Have been. The ring contacts 82 are connected to a circuit board (not shown) which is a control means for controlling the driving state of the electric blower 20 and the like.

The engaging portion 80 of the mounting portion 74 is
When the fitting portion 78 is fitted to the shaft 65 by engaging with the shaft portion 65, the distal end portion of the fitting portion 78 comes into contact with the step portion 71 of the shaft 65, and the fixing plate portion
75 does not come into contact with the flange 44a of the drum body 40,
6 faces the winding body 43 of the drum body 40 without contact, the tip of the flange 79 faces the mounting base 48 with a slight gap, and the tongue piece 56 of the contact fittings 51, 51, 56 is deformed against the elasticity, and the distal end portions slidably contact the ring contacts 82, 82, respectively, to form the cord winding device main body 84.

The mounting portion 74 mounted on the drum body 40
Are pinched and fixed by ribs protruding relative to the lower case 2a and the upper case 2b, and the shaft 65 is pinched and fixed by engagement of the ribs with the mounting groove 72 of the shaft 65,
A drum body 40 is rotatably supported in the drum chamber.

On the other hand, in FIG. 3, the rear end of the lid 3 is pivotally attached to the upper case 2b, and covers the dust collection chamber 12 so that it can be opened and closed from above. At approximately the center on the front side of the lid 3, a suction portion 90 is provided, and the suction portion 90 is formed such that an inner opening 91 and an outer opening 92 face each other. In addition, a cylindrical suction port 93 is formed in the middle opposite to the inside opening 91 and the outside opening 92. The suction port 93 has a front portion opening to the front of the vacuum cleaner main body 1 and a rear portion opening to the dust collection chamber 12.

Further, a shutter 94 that slidably supports a suction port 93 that allows the dust collection chamber 12 to communicate with the outside of the vacuum cleaner main body 1 is opened and closed at the suction section 90.

Next, the assembling operation of attaching the attaching portion 74 to the drum body 40 of the above embodiment will be described.

The contact fittings 51, 51 are electrically connected to the power cord in advance, and the end of the power cord 39 is wound together with the contact fittings 51, 51 through the cord insertion hole 46 of the winding body 43 of the drum body 40. It is inserted into the inner peripheral side of the part 43 and is temporarily fixed to the terminal base parts 52 of the separate mounting base 48. Then, attach the mounting base 48 to the wheel unit 4
The distal end of the rib 47 of the wheel portion 42 is inserted into the positioning portion 50 of the mounting base 48 so as to be substantially parallel to 2 and positioned. Next, the terminal block 52, in which the contact fittings 51, 51 of the mounting base 48 are temporarily fixed,
Screws 49, 49 are inserted through through holes 53, 53 of 52, and screwed to the ribs 47 of the wheel portion 42, and the mounting base 48 is fixed to the wheel portion 42 so as to face the wheel portion 42 substantially in parallel, The end of the power supply cord 39 inserted from the cord insertion hole 46 is sandwiched and fixed between the wheel part 42 and the mounting base 48, and the drum body 40 is assembled and formed.

Thereafter, the fitting portion 78 of the mounting portion 74 is fixed to the shaft 65 of the drum 40 while the mounting plate 77 on which the ring contacts 82, 82 of the mounting portion 74 are mounted on the mounting base 48 in substantially parallel opposition. Are fitted on the side where the engaging pieces 67, 67 are provided. At the time of this fitting, the pair of engaging pieces 67, 67 of the shaft 65 is elastically deformed so as to approach each other, and the engaging portion 80 of the fitting portion 78 engages with the engaging groove 69 of the shaft 65 to engage. The engaging claws 68, 68 of the mating pieces 67, 67 engage with the edge of the engaging portion 80, which is the end edge of the fitting portion 78, and the fitting portion
The end of the shaft 78 abuts against the step 71 of the shaft 65, and the fitting 78 is rotatably fitted so as to be sandwiched between the engagement claws 68, 68 and the step 71. And the drum body 40 are rotatably assembled to each other.

When assembling the drum body 40 and the mounting portion 74, the flange portion 44a of the drum body 40 and the fixing plate portion 7 of the mounting portion 74
When the fitting part 78 is fitted to the shaft 65 in a state where the fitting part 78 is not substantially parallel and is inclined, when the tip part of the flange part 79 of the mounting part 74 contacts the mounting base 48, Mating part 78
Cannot be fitted to the shaft 65. Further, since the fitting portion 78 is tubular, the fitting portion 78 is guided so as to be located along the axial direction of the shaft 65 even in an inclined state, and is substantially parallel.

For this reason, when the fixing plate 75 is attached to the drum body 40 in an inclined state, the contact fittings 51, 51 are not deformed unreasonably, and the contact fittings 51, 51 are prevented from being damaged. Contact fittings 51, 82 with appropriate biasing force
Poor contact due to non-contact of 51 is prevented.

According to the above embodiment, the rib 47 is provided on the wheel portion 42 provided on the winding body 43 of the drum body 40, and the mounting base 48 is mounted on the rib 47 with the screw 49 and the mounting base 48 is mounted.
In order to attach the contact fitting 51 to the mounting base 48, the mounting base 48 can be attached to the drum body 40 with one screw 49 and the contact fitting
51 can be simultaneously attached to the mounting base 48 in one operation, the number of parts can be reduced, the size and weight can be reduced, and the cost can be reduced.
Two processes of the mounting process to attach to 40 can be reduced to one process,
Assembly manufacturability can be improved.

When attaching the mounting base 48 to the wheel part 42, the end of the power cord 39 is connected to the mounting base 48 and the wheel part 42.
This eliminates the need for a member for fixing the power cord 39, and eliminates the need to fix the power cord 39 to the drum body 40. Reduction can be achieved, and assembly manufacturability can be further improved.

A mounting portion 74 rotatably mounted on the shaft 65 of the drum body 40 and rotatably holding the drum body 40 by being mounted in the drum chamber of the main body case 2.
The ring contacts 82, 8 disposed on the mounting plate 77
A flange 79 is provided so as to cover the contact portion toward the mounting base 48 of the drum body 40 in which the contact fittings 51, 51 slidably contacting the contact member 2 are arranged. Contact failure between the contact metal fittings 51, 51 and the ring contacts 82, 82 can be prevented, and the flange portion 79 abuts the mounting base 48 of the drum body 40 when the mounting portion 74 is mounted on the shaft 65. With the configuration, the mounting plate 77 of the mounting portion 74 and the mounting base 48 of the drum body 40 are not easily mounted in an inclined state, and the mounting portion 74 can be securely mounted on the drum body 40,
Stress is not applied to the sliding contact, so that damage and poor contact of the sliding contact can be prevented.

Further, the shaft 65 of the drum body 40 is
Since a substantially cylindrical fitting portion 78 that is rotatably mounted on the mounting portion 74 is provided, even if the mounting plate 77 of the mounting portion 74 and the flange portion 44a of the drum body 40 are fitted in an inclined state, the mounting portion 74 is substantially parallel. As a result, the flange 79 prevents the mounting in an inclined state more reliably.

Further, the mounting plate 77 of the mounting portion 74 is formed of a flame-retardant member for arranging the ring contacts 82, 82 through which the commercial AC power is conducted.
Is also made of a flame-retardant member, so that the contact
Since only the mounting base 48 for attaching 51 and 51 is formed of a flame retardant member separate from the drum body 40, the contact portion of the sliding contact is surrounded by the flange portion 79 of the flame retardant member and the drum body 40
Does not need to be formed of an expensive and heavy flame-retardant member, so that the weight and cost can be reduced.

In the above-described embodiment, the cord winding device main body 84 for winding the power cord of the vacuum cleaner has been described. However, the same effect can be obtained by winding any other cord having a contact. can get.

Although the mounting means 48 is attached to the wheel portion 42 and the screw 49 is used as an attachment means for attaching the contact fitting 51 to the mounting base 48, any other structure can be used.

As the mounting portion 74, the mounting plate 77, the flange portion 79, and the fitting portion 78 have been described as being formed integrally with the fitting insertion portion 76 of the fixed plate portion 75 using a flame-retardant member. , The flange portion 79 and the fitting portion 78 are integrally formed of a flame-retardant member, the fixing plate portion 75 and the fitting insertion portion 76 are formed of other inexpensive members, and these are adhered with an adhesive. They may be connected integrally. According to this configuration, only the portion facing the sliding contact is made of an expensive and heavy flame-retardant member, so that the weight of the mounting portion 74 and the cost can be reduced.

Although the flange portion 79 has been described as projecting substantially cylindrically from the periphery of the mounting plate 77, the drum body 40
The mounting base 48 is formed so as to protrude toward the mounting plate 77 of the mounting part 74, or the protruding parts are protruded with the front ends facing each other. Any shape that opposes through the gap can be used. Further, the flange 79 need not be provided.

[0044]

According to the code winder according to claim 1, wherein, according to the present invention, the wheel portion provided in the center axis of the winding barrel portion of the drum body has a rib, and substantially is parallel to each by attachment means mounting is attached <br/> the platform, this for attaching the contact to mount, reduce can both attached to the mounting and mount the drum body of the contact in one operation at one attachment means, a configuration for attaching And at the same time assembling productivity can be improved. Sa
In addition, when attaching the mounting base to the ribs of the wheel part, the end of the cord is clamped and fixed between the mounting base and the wheel part, so there is no need for a separate cord installation structure and the cord can be installed at the same time , Assembling manufacturability can be improved.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main body of a cord winding device showing an embodiment in which the cord winding device of the present invention is used in a vacuum cleaner.

FIG. 2 is a plan view of the same.

FIG. 3 is a sectional view showing a vacuum cleaner main body provided with the cord winding device main body;

[Explanation of symbols]

 39 Power cord as a cord 40 Drum body 42 Wheel part 43 Winding body part 44a, 44b Flange part 45 Winding part 47 Rib 48 Mounting base 49 Screw as mounting means 51 Contact metal fittings as contacts 65 Shaft as shaft member 74 Mounting part 77 Mounting plate 82 Ring contact which is a contact 84 Cord take-up device body

Continuation of the front page (56) References Japanese Utility Model Showa 61-137358 (JP, U) Japanese Utility Model Showa 56-44516 (JP, U) Japanese Utility Model Showa 52-64382 (JP, U) Japanese Utility Model Showa 61-95770 (JP) , U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) B65H 75/48 A47L 9/26 B65H 75/42

Claims (1)

(57) [Claims] 1. A winding body having a cylindrical shape, a wheel portion provided at a position substantially perpendicular to an axial direction of a center axis of the winding body and supporting a shaft member, and the winding body. A drum body provided with a pair of flanges projecting in the radial direction and forming a pair of winding sections for winding a cord with the outer peripheral surface of the winding body section; and a wheel body of the drum body. possess the ribs, the contacts being electrically connected to said cord, said code
A mounting base for holding and fixing an end of the hand between the wheel part and the wheel part; a mounting plate having a contact slidably in contact with the contact and facing the mounting base substantially parallel to the mounting member; A cord winding comprising: a rotatable mounting portion; and mounting means for mounting the contact point on the mounting base and mounting the mounting base on the rib so as to be substantially parallel to the wheel portion. apparatus.