JPS6036212Y2 - vacuum cleaner - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vacuum cleaner that sucks in and cleans dust using the vacuum suction power of an electric blower.

[Conventional technology]

Some vacuum cleaners are equipped with a noise prevention capacitor.

Generally, the above-mentioned capacitor is directly attached to the outer surface of the outer metal part of the electric blower for grounding purposes, and therefore is susceptible to deterioration and failure due to heat transfer from the electric blower.

Therefore, as shown in Japanese Utility Model Application Laid-Open No. 53-112746, a conventional example is known in which the condenser is provided apart from the electric blower.

In this device, a capacitor fitting part is formed on the support plate that supports the rear end of the electric blower, the capacitor is fitted here, a ground plate is connected to the capacitor via a grounding terminal wire, and this ground plate is connected to the capacitor. It is configured to be inserted between the rear end of the electric blower and a vibration isolating cushion fitted to the rear end for grounding.

[Problem that the invention attempts to solve]

However, in the above conventional technology, the conductive structure between the electric blower and the capacitor requires a covered ground terminal wire and a ground plate, so the number of components is large, and the conductive structure requires soldering. The work is troublesome and therefore the manufacturing cost is high.

Furthermore, the contact between the ground plate and the electric blower is made by sandwiching the ground plate with a vibration-proof cushion, which makes the connection work relatively troublesome. In addition, there is a risk that contact may become unstable due to vibrations of the electric blower, etc.

Moreover, since the capacitor has a structure in which it is simply fitted into the fitting portion and held, the capacitor may easily come off due to dimensional tolerances, vibrations, and the like.

[Means for solving problems]

The present invention incorporates an electric blower with a sound deadening material wrapped around the vacuum cleaner body case, and a condenser storage section in the support part that is provided on the vacuum cleaner body case and supports the rear side of the electric blower. A conductor locking part is provided in this storage part, and a noise prevention capacitor that is electrically connected to the electric blower is installed in the storage part.A conductor that grounds the ground part of this capacitor to the rear surface of the electric blower is installed in the storage part. This conductor has one end fixed to the above-mentioned conductor locking part, and the other end is provided in elastic contact with the rear surface of the electric blower, and the middle part of the conductor is connected to the ground of the capacitor. The above-mentioned conventional problems are solved by pressing and holding the capacitor in the capacitor housing by making elastic contact with the capacitor housing.

[Effect]

According to the present invention, the conductor that grounds the capacitor to the electric blower is formed with a metal spring, and one end of the conductor is
The capacitor is held in the locking part of the capacitor storage part formed in the support part of the vacuum cleaner body case that supports the rear side of the electric blower, and the capacitor is pressed and held in the capacitor storage part by the spring force of the conductor. It is possible to maintain contact with the ground part of the capacitor and to maintain contact between the conductor and the electric blower.

Therefore, by moving the capacitor away from the rear of the electric blower and grounding it via a conductor to the rear, it is possible to prevent deterioration and failure of the capacitor due to conduction heat, and also to prevent the deterioration and failure of the capacitor due to conduction heat. Niho 1
] The capacitor can be grounded to the electric blower without any restrictions.

Furthermore, since the conductor that grounds the capacitor on the back of the electric blower is a single metal spring component, the number of parts is minimal and there is no need for soldering, resulting in low costs.

Since the conductor has a structure in which it comes into elastic contact with the rear surface of the electric blower due to its spring properties, it can be easily installed without requiring any special member to maintain contact.
Due to its spring properties, stable contact can be maintained regardless of dimensional tolerances and influences such as vibration.

Furthermore, the electrical connection between the conductor and the capacitor can be easily and reliably achieved by simply bringing the intermediate portion of the conductor made of a metal spring into elastic contact with the capacitor.

In addition, since the structure is such that the resiliency of the conductor is used to press and fix the capacitor in the capacitor housing, the capacitor can be reliably held in the capacitor housing regardless of dimensional tolerances.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In FIG. 1, reference numeral 7 denotes an electric blower built into the main body case of the vacuum cleaner, which is supported between a pair of left and right main case frames 8 constituting the case.

A sound absorber 9 is wound around the outer periphery of the blower 7 and attached.

In addition, 35 in FIG. 1 is a vibration-proof rubber.

Further, reference numeral 10 denotes a condenser storage section, which is provided at an appropriate position in a portion 8a of the main body case frame 8 located on the rear side of the electric blower 7, and a condenser 11 is housed inside the condenser storage section.

This condenser housing portion 10 is preferably located at a location where the exhaust air from the electric blower 7 is not blown.

In FIG. 1, a location close to the rear end face of the electric blower 7 is selected.

The outer circumferential portion of the capacitor 11 is a ground portion made of a conductive material.

Reference numeral 12 denotes an electric conductor, which is made of a metal spring, and in the illustrated case is made of a leaf spring.

A mounting portion 13 is formed at the base of the conductor 12, and is inserted and locked into a locking portion 14 formed at the bottom of the capacitor storage portion 10.

Further, the tip of the conductor 12 is in elastic contact with the rear surface of the electric blower 7 toward the outside of the storage section 10 .

Therefore, when the capacitor 11 is inserted into the capacitor housing 10, the middle part of the conductor 12 comes into elastic contact with the outer periphery (earth part) of the capacitor 11, and the tip of the conductor 12 contacts the rear surface 15 of the electric blower 7 due to its own elasticity. It makes contact and forms a ground.

In addition, in the embodiment shown in FIGS. 1 and 2, the conductor 12 was made of a leaf spring, but this conductor 12
It is also possible to form metal wires, and as shown in Figs.
The figure shows an example in which a linear conductor 12 is used.

In the figure, 12 indicates a conductor made of metal wire,
A single metal wire is bent at the center, and both ends 16.1
6 is bent outward, and the intermediate portion 17 is curved in an arc shape along the outer periphery of the capacitor 11.

Further, an intermediate portion 19 which is close to the central portion 18 is curved in an arc shape in a direction opposite to the intermediate portion 17.

Then, as shown in Figure A of Figure 4, the conductor 12 is
It is attached to the capacitor housing 10 as shown in the figure.

FIG. 4B shows the capacitor 11, and the electrode lead-out terminals 25, 25 are connected to the cutouts 10 in the storage part 10.
0 to the outside, fit into the storage section 10, and insert the conductor 12 into the mounting section 21 of the storage section 10 from above.

A mounting hole 22 serving as a locking portion is provided at the bottom of the mounting portion 21, and both ends 16 of the conductor 12 are locked.

As shown in FIG. 3, the conductor 12 has a central portion 18 which has elasticity in the vertical direction as shown by the arrows, and both end portions 16. !
6 is curved as shown by the dotted line when held between fingers, so that it can be locked in the mounting hole 22.

Reference numeral 23 in FIG. 4 indicates an intermediate engagement portion, with which the intermediate portion 19 of the conductor 12 engages.

Fig. 5 shows the back side of the capacitor storage part 10 which also serves as a fuse storage part, and when the capacitor 11 is installed in a device other than an electric blower, the wiring becomes convenient if the capacitor storage part 10 is used as a wiring board 26. This is an example in which the fuse 24 is mounted inside the wiring board 26.

FIG. 6 shows another example in which the capacitor 11 is provided in a wiring board 26 which also serves as a capacitor housing, and the housing that houses the capacitor 11 has electrode plates 27 and 28, and a spring is attached to a part of the housing. Sections 29 and 30 are formed.

The terminal portion of the capacitor 11 is formed by protruding portions 31 and 32, is pushed up from below by springs 29 and 30, and is held down by the conductor 12 from above, and is pressed into contact with it to establish an electrical connection.

Electrode plates 27 and 28 are each connected to a motor via a terminal plate.

33 and 34 are fuse terminals.

[Effect of idea]

Since the present invention is constructed as described above, the capacitor can be grounded without being restricted by the silencing body wrapped around the electric blower, and the deterioration and failure of the capacitor due to conductive heat from the electric blower is eliminated.

In addition, since the capacitor is grounded to the electric blower using only the conductor formed by the metal spring, the work of connecting the conductor to the outer circumference of the capacitor and the work of connecting the conductor to the back of the electric blower are simple and easy. Assembling is easier because only the connections are required.

In addition, since the above connection does not require fixing, the serviceability of the capacitor is good.

Moreover, since the above connection is made by elastic contact, there are effects such as reliable electrical contact with the ground, regardless of the influence of vibrations of the electric blower.

[Brief explanation of the drawing]

1 and 2 show an embodiment of the present invention, with FIG. 1 being a longitudinal sectional side view showing the main parts, and FIG. 2 being a partially exploded perspective view. Figure 3 shows a linear conductor, Figure A is a front view, Figure B is a side view, Figure 4 A is a perspective view of the linear conductor, Figure B is a perspective view of a capacitor, C is a perspective view of the capacitor storage section. FIG. 5 is a longitudinal sectional side view of the capacitor storage section attached to the wiring board. FIG. 6 is a perspective view showing deformation when a capacitor is housed in a wiring board. 7... Electric blower, 8... Vacuum cleaner body case, 8a... Support part, 9... Sound deadening body, 10... Capacitor Storage section, 11...
... Capacitor 12 ... Conductor, 14
, 22... Conductor locking portion, 15... Rear surface.

Claims (1)

[Scope of utility model registration request] The vacuum cleaner body case has a built-in electric blower with a sound deadening material wrapped around it, and a condenser storage part is provided in the support part that is provided on the vacuum cleaner body case and supports the rear side of the electric blower, facing the rear side of the electric blower. The storage section is equipped with a conductor locking part, and also houses a noise prevention capacitor that is electrically connected to the electric blower. The conductor is shaped like a spring, and has one end locked in the conductor locking part and the other end in elastic contact with the rear surface of the electric blower, and the middle part of the conductor is connected to the ground part of the capacitor. A vacuum cleaner characterized in that the capacitor is held in elastic contact with the capacitor inside the capacitor housing.