JP3523790B2 - Vibration sensor and vacuum cleaner having the vibration sensor - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vibration sensor that senses vibration due to rolling of a sphere, and an electric vacuum cleaner that automatically controls the operation of an electric blower using the vibration sensor.

[0002]

2. Description of the Related Art Japanese Utility Model Laid-Open No. 4-118633 discloses
A vibration sensor for detecting vibration by rolling of a sphere is disclosed. This type of vibration sensor includes a sensor body that is installed at a place where vibration should be sensed. The sensor body is composed of a flat printed board and a cover installed on the upper surface of the printed board.

The cover defines a circular detection area on the upper surface of the printed circuit board, and a positive electrode pattern and a negative electrode pattern are formed on the upper surface of the printed circuit board facing the detection area. The positive electrode pattern has a large number of first linear contacts radially extending from the center of the detection region. The negative electrode pattern has an annular portion surrounding the positive electrode pattern, and a large number of second linear contacts arranged at intervals in the circumferential direction of the annular portion. It extends toward the center of the area. Therefore, the first linear contacts of the positive electrode pattern and the second linear contacts of the negative electrode pattern are alternately arranged.

A conductive sphere is housed inside the cover. The sphere is located in the detection area and rolls along the upper surface of the printed circuit board when vibration is applied to the sensor body. By this rolling, the first linear contact and the second linear contact are electrically connected to each other or cut off from each other via the spherical body, and the first and second adjacent lines are connected to each other. Electrical signals are interrupted between the contact points. As a result, the vibration sensor is
The signal according to the positional relationship with the linear contact or the second linear contact is output, and the presence or absence of vibration is detected by this output.

On the other hand, an electric vacuum cleaner for general household use is provided with a cleaner body having a built-in electric blower, and a suction head connected to the cleaner body via a hose or an extension pipe. At the tip of the hose, a hand operation unit is installed. The hand operation unit includes a grip to be held by a hand during cleaning, an operation panel for turning off the power of the electric vacuum cleaner, and switching the operating state of the electric blower between standard, strong, and weak.

Therefore, when the electric blower is driven in accordance with the operation of the operation panel, a negative pressure acts on the suction port of the suction head, and the dust on the surface to be cleaned is sucked and removed through the suction port. ing.

During cleaning, the operator grips the grip to move the suction head back and forth along the surface to be cleaned, and operates the operation panel with a fingertip according to the degree of dirt on the surface to be cleaned. The operating state of is switched appropriately.

In this case, in the conventional electric vacuum cleaner, when the power of the electric blower is turned off and the operating state is switched,
It requires artificial work such as operating the operation panel with the fingertips of the hand holding the grip. Therefore, the switch operation may be annoying during cleaning, and the switch operation may be neglected even if it is necessary to temporarily stop the cleaning. Therefore, even though the cleaning is suspended, the electric blower continues to operate as it is, resulting in a waste of electric power and an economic problem.

In order to solve this problem, conventionally, a temperature sensor for sensing the temperature of the hand is installed in the grip of the hand operation unit, and the operation of the electric blower is controlled based on the temperature information from the temperature sensor, or An infrared sensor that detects infrared rays emitted from the human body is installed on the grip,
An electric vacuum cleaner has been developed in which the operation of the electric blower is controlled by detecting whether or not there is a relative movement between the hand operation unit and the worker by the infrared sensor.

According to this electric vacuum cleaner, the operation of the electric blower can be automatically controlled by gripping the grip or moving the grip back and forth, and the operation panel is manually operated. Is unnecessary. At the same time, when the grip is released or the grip is stopped from moving back and forth, a signal indicating that cleaning is not performed is output from each of the sensors, and the operation of the electric blower is stopped. Therefore, not only cleaning work can be performed easily, but also economical operation is possible.

[0011]

According to the above-mentioned conventional vibration sensor, the first linear contacts of the positive electrode pattern and the second linear contacts of the negative electrode pattern are both alternately arranged radially from the center of the detection area. Therefore, the gap between the first linear contact and the second linear contact is gradually increased from the center of the detection area toward the outer peripheral portion.

In the case of such a configuration, the sensitivity of the vibration sensor is determined according to the arrangement interval between the first linear contact and the second linear contact and the diameter of the sphere extending between these linear contacts. In the vicinity of the center of the detection area and in the vicinity of the outer circumference, the detection sensitivity of the vibration based on the rolling of the sphere is different.

That is, the sphere rolls on the upper surface of the printed board in an arbitrary direction, so that the first linear contact and the second linear contact are formed.
Since the contact / non-contact with the linear contact is repeated, it is difficult for the sphere to contact the first and second linear contacts in the vicinity of the outer periphery of the detection area where the distance between the first and second linear contacts is wide. . As a result, vibration may not be detected accurately even though the sphere is rolling, and there is a problem that reliability is reduced.

Further, in the electric vacuum cleaner in which the temperature sensor is installed in the grip of the hand operation part, the temperature is detected whether or not the grip is actually gripped, so that the worker firmly holds the grip during cleaning. It is necessary to squeeze it, which may be uncomfortable for some people.

Further, when an infrared sensor is installed on the grip, the infrared sensor has a pyroelectric infrared element for detecting infrared rays and an amplifier for amplifying a signal output from this element, so that the sensor itself is It becomes expensive and causes problems in terms of cost.

Moreover, since the infrared sensor is exposed to the outside of the grip, if an intervening substance that blocks infrared rays enters between the worker and the infrared sensor during cleaning, the grip is moved back and forth. The infrared sensor may erroneously recognize that the cleaning is not performed even while the cleaning is being performed. Therefore, there is a problem that the infrared sensor is easily affected by the outside and the reliability in recognizing whether or not the cleaning is being performed is lowered.

A first object of the present invention is to obtain a vibration sensor which can detect vibration accurately and surely without being influenced by the position and rolling direction of a sphere and which is excellent in reliability. .

A second object of the present invention is to be able to accurately and reliably recognize whether or not cleaning is being performed.
Moreover, it is to obtain an electric vacuum cleaner that is low in cost and easy to use.

[0019]

In order to achieve the above first object, a vibration sensor according to one aspect of the present invention includes a base having a detection area on a flat rolling surface, and detection of the base.
Positive electrode pattern formed in the area and the detection area of the substrate
A negative electrode pattern formed on, are arranged on the rolling surface of the base, together with the base rolls along the rolling surface when the vibration, the positive electrode pattern and the upper This rolling
Serial and a conductive sphere to shift to the conduction or non-conduction state between the negative electrode pattern, based on the rolling of the sphere,
Assumes that outputs a signal corresponding to the positional relationship between the sphere and the positive electrode pattern or the negative electrode pattern. The positive electrode pattern extends along the outer peripheral portion of the detection area.
A straight line extending from the base to the detection area from the base.
And a large number of positive contacts arranged parallel to each other
And the negative electrode pattern is provided on the outer peripheral portion of the detection region.
Along with the above, the above-mentioned detection for the base of the above-mentioned positive electrode pattern
From the base facing each other across the area, from this base
Extends linearly toward the detection area and parallel to each other
A plurality of negative contacts arranged, the positive contacts and
And the negative contact point are covered by the sphere on the detection area.
The above detection is performed by alternately arranging with such a spacing.
It extends over the entire area and the tip of the positive electrode contact is
Located just before the base of the negative electrode pattern and
Note that the tip of the negative electrode contact should be positioned just before the base of the positive electrode pattern.
It is characterized by placing .

According to this structure, a large number of positive electrode contacts
And many negative contacts are arranged alternately so that they mesh with each other
Therefore, the arrangement interval between the positive electrode contact and the negative electrode contact can be kept constant over the entire detection region . Because of this ,
Even if the spherical body is in any position in the detection area, is it equivalent positional relationship between the sphere and the positive contact and the negative contact
It

Therefore, even if the sphere rolls on the rolling surface in any direction, the sphere will surely come into contact with the positive electrode contact and the negative electrode contact, and the diameter of the sphere and the contact between the positive electrode contact and the negative electrode contact. It is possible to make the detection sensitivity of vibration determined by the interval constant over the entire detection region.

In order to achieve the first object, the present invention
According to the vibration sensor according to another form ,
The formed positive electrode pattern extends along the outer periphery of the detection area.
And a positive base extending from the base toward the detection area.
A pole contact, the positive contact from the end of the base
A first linear portion that extends linearly through substantially the center of the detection area
And from this first linear portion to the side opposite the base.
And extend in a straight line and parallel to each other with a space between them
A plurality of second linear portions arranged and the base to the
Linearly extending toward the first linear portion and
A large number of third linear portions arranged in parallel at intervals
And the negative electrode pattern formed in the detection area is
Of the positive electrode pattern along with the outer peripheral portion of the detection area.
Located on the opposite side of the base with the above detection area in between
A base and a negative electrode extending from the base toward the detection region
A negative contact, the negative contact from the end of the base.
A first linear portion that linearly extends through substantially the center of the projecting area
And from this first linear part to the side opposite to the base
And extend in a straight line and are arranged in parallel at intervals.
A plurality of second linear portions that are placed and the base to the first
Linearly extending toward the linear part of 1 and between
With a large number of third linear parts arranged in parallel with a space
A, the first to third linear portion and first to third linear portion of the negative electrode contacts the positive electrode contact, an interval such span is the sphere over the entire area of the detection region The feature is that they are arranged alternately.

According to this structure, the second contact of the positive electrode contact
And the third linear portion and the second and third linear portions of the negative electrode contact are alternately arranged so as to mesh with each other.
Moni, are disposed substantially symmetrically between the first linear portion which passes through the center of the detection region. Therefore, almost all of the detection area
This to maintain the arrangement interval between Oite positive contact and the negative contact to the constant
Bets can be, even if the sphere is in any position in the detection area, the positional relationship between the sphere and the positive contact and the negative contact become equal.

Therefore, even if the sphere rolls on the rolling surface in any direction, the sphere surely contacts the positive electrode contact and the negative electrode contact, and therefore, the diameter of the sphere and the positive electrode contact. It is possible to make the vibration detection sensitivity, which is determined by the distance from the negative contact, constant over the entire detection region.

In order to achieve the first object, the present invention
Furthermore the vibration sensor according to another embodiment includes a base having a detection region on a flat rolling surface, is formed in the detection region of the base
A large number of positive contacts and
Arranged on the rolling surface of the base, with a large number of negative contacts
Together with the foundation rolls along the rolling surface when vibration, anda conductive sphere to shift the conduction or non-conduction state between the positive electrode contact and the negative contact with this roll ing. One of the contacts of the positive electrode contact or the negative electrode contact extends radially from the center of the detection region, the other contact, with being interposed between one of adjacent contacts, Has an edge portion arranged in parallel with the one contact, and
Note that the other contact has an interval such that the sphere straddles it.
It is characterized in that they are alternately arranged in the circumferential direction of the detection region .

According to this structure, the positive contact or the negative contact
Despite one of the pole contacts extending radially
The positive electrode contact and the negative electrode contact in the entire detection area.
Constant that can be kept in, even when the sphere is in any position in the detection area, the positional relationship between the sphere and the positive contact and the negative contact become equal.

Therefore, even if the sphere rolls on the rolling surface in any direction, the sphere surely comes into contact with the positive electrode contact and the negative electrode contact, and the diameter of the sphere and the positive electrode contact and the negative electrode contact It is possible to make the detection sensitivity of the vibration, which is determined by the interval of, constant over the entire detection region.

[0028]

[0029]

In order to achieve the above second object, the present invention
Vacuum cleaner according to an embodiment includes a cleaner body having an electric blower, is connected to the cleaner body, a suction line including the operation portion for controlling the electric blower, the intake <br/> physician together connected to write line, a suction head is moved along the surface to be cleaned, the cleaner main body, the operation portion, the claims installed in any of the above suction pipe or the suction head The vibration sensor according to any one of 1 to 3 is provided, and the operation of the electric blower is controlled by a signal output from the vibration sensor.

In such a structure, when the suction head is moved along the surface to be cleaned by advancing or retracting the suction pipe, the vibration accompanying the movement of the suction head is transmitted to the vibration sensor. The vibration accompanying the cleaning operation is transmitted from the base to the sphere, and the sphere rolls along the rolling surface in any direction.

At this time, the entire detection area on the rolling surface is
Since a large number of positive contacts and negative contacts are arranged at a fixed interval, the sphere rolls so as to alternately contact the positive contacts and the negative contacts, and the electrical signal is intermittent between these terminals. Is done.

That is, the signal output from the vibration sensor changes when the positive electrode contact and the negative electrode contact are conducted via the sphere and when the sphere is separated from the positive electrode contact or the negative electrode contact. Therefore, if the signal output from the vibration sensor changes over time, it is recognized that cleaning is actually performed, and the operation of the electric blower is continued based on the signal from the vibration sensor. Alternatively, control is performed such that the rotation speed of the electric blower is increased.

When the vibration is not transmitted to the sphere, the sphere is stopped while the cathode contact and the anode contact are crossed, that is, the terminals are electrically connected, or the cathode is positive. The signal output from the vibration sensor is stabilized because it is stationary while being in contact with either the contact or the negative contact. Therefore, when the signal output from the vibration sensor is stable within a predetermined time, it is recognized that cleaning is not performed, and the operation of the electric blower is determined based on the signal from the vibration sensor. The control is performed such that the motor is stopped or the rotation speed of the electric blower is reduced.

Therefore, by detecting the vibration accompanying the cleaning operation through the vibration sensor, the operation of the electric blower can be automatically controlled, and the troublesome work of operating the switch during the cleaning can be relieved. Of course, economical driving becomes possible.

Moreover, according to the vibration sensor having the above structure,
The positive electrode contact and the negative electrode contact are arranged at a constant interval over the entire detection area, and the positional relationship between the sphere and the positive electrode contact and the negative electrode contact is kept the same regardless of the position of the sphere in the detection area. Therefore, even if the sphere rolls on the rolling surface in any direction, the sphere surely contacts the positive electrode contact and the negative electrode contact. Therefore, the vibration detection sensitivity, which is determined by the diameter of the sphere and the distance between the positive electrode contact and the negative electrode contact, is constant over the entire detection region, and it is possible to accurately detect whether or not cleaning is actually performed.

Further, since this vibration sensor has a simple structure in which the sphere rolls on the positive electrode contact and the negative electrode contact, the vibration sensor is less expensive than the conventional infrared sensor.
The cost of the vacuum cleaner can be reduced.

At the same time, since the vibration sensor does not have to be exposed to the outside of the vacuum cleaner, it is possible to prevent malfunctions and damages due to external disturbances, and it is possible to accurately determine whether or not the cleaning is being performed. In addition to being detectable, the reliability in controlling the electric blower is improved.

In order to achieve the second object, the present invention
Vacuum cleaner according to another embodiment includes a cleaner body having an electric blower, is connected to the cleaner body, a suction line including the operation portion for controlling the electric blower, the sucked <br/> inclusive together connected to the conduit, comprising a suction head is moved along the surface to be cleaned, a vibration sensor installed in one of the operation portion or the suction head, a signal output from the vibration sensor Accordingly, the above-mentioned power
It is based on the premise that controls the operation of the dynamic blower. The vibration sensor is a base having a detection area on a flat rolling surface.
And a number of linear lines installed in the detection area of the base
Positive contacts and many wires installed in the detection area of the above board
Arranged on the rolling surface of the base and the negative electrode contact in the shape of
When the base vibrates and rolls along the rolling surface,
Both of the positive contact and the negative contact due to this rolling
And a conductive sphere that shifts the
Based on the rolling of the sphere,
Outputs a signal according to the positional relationship with the pole contact or the negative contact.
Force The positive contact and the negative electrode of the vibration sensor
The contacts should be spaced apart from each other with the above-mentioned sphere straddling each other.
They are arranged in parallel and extend over the entire detection area.
Together are, the vibration sensor, the the moving direction of the positive electrode contact and the head suction operation portion or when cleaning the anode contact is supported on the operation portion or the suction head and along a direction intersecting orientation It is characterized by

According to this structure, the surface to be cleaned is cleaned.
In doing so, when the suction head is moved back and forth via the hand operation part, the spherical body of the vibration sensor rolls in a direction crossing the positive electrode contact and the negative electrode contact. Therefore, the sphere is repeatedly contacted with the positive electrode contact and the negative electrode contact alternately, and the electrical signal is reliably interrupted between these contacts.

Therefore, it is possible to more reliably detect whether or not the cleaning is actually performed, and it is possible to control the electric blower with high accuracy in accordance with the cleaning condition.

In order to achieve the above second object, the present invention
Further vacuum cleaner according to another embodiment includes a cleaner body having an electric blower, is connected to the cleaner body, a suction pipe having an operation portion for controlling the electric blower,
Together connected to the inlet line, the suction head is moved along the surface to be cleaned, the operation portion, a vibration sensor installed in any of the above suction <br/> pipe or the suction head narrowing have comprising a, by a signal output from the vibration sensor controls the operation of the electric blower
It is assumed. The vibration sensor is mounted on a flat rolling surface.
The board with the detection area and the detection area of the board
Multiple linear positive contacts and the detection area of the base
Installed in the negative electrode contacts in the form of a line and
It is placed on the rolling surface and when the base vibrates, the rolling
It rolls along the surface and this rolling causes the positive electrode
Move the contact and the negative contact to conductive or non-conductive.
And a conductive sphere that
The positional relationship between the spherical body and the positive contact or the negative contact
The corresponding signal is output. The positive contact of the vibration sensor
And the negative electrode contact, a region where the arrangement interval is dense, and an area where the arrangement interval is sparse, the vibration sensor, when allowed to stand up the suction pipe, the sparse regions and lower In this posture, the suction line or the suction head is supported.

[0043] interrupted fraud and mitigating risk cleaned to such a configuration
The inlet line or leaning against furniture, walls, or when erecting and the like hooked on the cleaner body, and moves to the region where the sphere of the vibration sensor becomes sparse arrangement interval between the positive electrode contacts the negative contact, these positive It stops when it contacts either the contact or the negative contact.

Therefore, the signal output from the vibration sensor does not change, and it is possible to surely recognize that the cleaning has been interrupted by the operation of just raising the suction pipe line.

Further, in the sparse region, it becomes difficult for the spheres to alternately contact the positive electrode contacts and the negative electrode contacts as the distance between the positive electrode contact and the negative electrode contact increases, so vibrations due to rolling of the spheres occur. The detection sensitivity of has decreased. For this reason,
Even if some external vibration is applied to the suction pipe line or suction head, the signal output from the vibration sensor does not change, and this external vibration is erroneously recognized as vibration due to restart of cleaning. Can be prevented.

[0046]

1 to 9 in which a first embodiment of the present invention is applied to a vacuum cleaner for general households.
I will explain based on.

FIG. 1 shows an electric vacuum cleaner 1 for general household use. The electric vacuum cleaner 1 has a cleaner body 2. Inside the cleaner body 2, an electric blower 3 that sucks into a dust collection chamber (not shown) to generate negative pressure is housed. The cleaner body 2 has a hose insertion port 4 which is continuous with the dust collection chamber, and one end of a flexible hose 5 is detachably connected to the hose insertion port 4.

A hand operation section 6 is attached to the tip of the hose 5. The hand operation part 6 has a hard relay pipe 7 connected to the hose 5, and the suction head 9 is detachably connected to the relay pipe 7 via first and second extension pipes 8a and 8b. Therefore, in the present embodiment,
The hose 5, the relay pipe 7, and the extension pipes 8a and 8b form a suction pipe line 10 that connects the cleaner body 2 and the suction head 9.

The suction head 9 has a head body 11 which is moved along the surface C to be cleaned. Head body 1
1 has an elongated flat box shape that extends in the left-right direction at right angles to the first and second extension pipes 8a and 8b, and a suction port (not shown) is opened on the lower surface of the head body 11. Therefore, when negative pressure is generated by sucking the dust in the dust collecting chamber due to the operation of the electric blower 3, this negative pressure acts on the suction port through the hose 5 and the extension pipes 8a and 8b, and the surface to be cleaned C is cleaned.
The dust on the top is sucked and removed through the suction port.

As shown in FIG. 1, a stand hook 13 is formed on the lower surface of the tip of the second extension tube 8b connected to the suction head 9. The stand hook 13 is adapted to be detachably inserted into the insertion port 2a on the upper rear surface of the cleaner body 2. Therefore, for example, when the cleaning is interrupted, the stand hook 13 is inserted into the insertion port 2
When it is inserted into a, as shown in FIG.
From the hand operation part 6 of the first and second extension pipes 8a, 8b
Is held by the cleaner body 2 in a state in which a portion up to is raised substantially vertically.

By the way, the hand-side operation section 6 has a grip 15. This grip 15 is for gripping by hand when advancing or retracting the suction head 9 along the surface C to be cleaned, as shown by the arrow in FIG.
It is integrated with the relay pipe 7 of the hand operation unit 6.

As shown in FIG. 3, a circuit board 16 is housed inside the grip 15. This circuit board 16
Is a switch 17 for turning off the power of the electric blower 3.
And the first to third switches 18a, 18b, which switch the operating state of the electric blower 3 into three stages of strong / standard / weak.
18c and a microcomputer 19 for controlling the operation of the electric blower 3 are mounted. Off switch 17 and first to third switches 18a, 18b, 18c
Are electrically connected to the microcomputer 19 via a wiring pattern on the circuit board 16.

The operation panel 20 is provided on the upper surface of the grip 15.
Are arranged. The operation panel 20 includes first to fourth
It has the switch operation parts 21a to 21d. The 1st thru | or 4th switch operation parts 21a-21d are cutoff switch 17, 1st thru | or 3rd switch 18a, 18b, 1
8c, and these switch operation parts 21a
By pressing ~ 21d with a fingertip, the off switch 1
7. First to third switches 18a, 18b, 18c
Is turned on and off.

A vibration sensor 24 is provided inside the grip 15.
Is housed. The vibration sensor 24 is for controlling the operation of the electric blower 3 by detecting the movement of the grip 15 during cleaning as vibration. The details of the vibration sensor 24 will be described below with reference to FIGS. 4 to 9. To do.

The vibration sensor 24 has a sensor body 25. The sensor body 25 includes a disk-shaped base 26 and a cover 27 that covers the base 26. Foundation 2
The upper surface of 6 is a flat rolling surface 28. Cover 2
7 has a cylindrical peripheral wall 29 and an upper wall 30 that closes the open end of the peripheral wall 29, and the upper wall 30 faces the rolling surface 28 of the base 26. And this cover 2
7 cooperates with the rolling surface 28 of the base 26 to form the sensor body 25.
The rolling space 31 is formed inside the
1 defines a circular detection area 32 on the rolling surface 28 as shown in FIG.

In the rolling space 31, there is a spherical body 3 having conductivity.
3 are accommodated. The sphere 33 is adapted to roll in the rolling space 31 in any direction along the rolling surface 28 when the sensor body 25 vibrates.

A positive electrode pattern 35 and a negative electrode pattern 36 as shown in FIG. 5 are formed on the rolling surface 28 on which the spherical body 33 rolls. The positive electrode pattern 35 and the negative electrode pattern 36 slightly project from the rolling surface 28.

The positive electrode pattern 35 has a base portion 37 curved in an arc shape, and a large number of positive electrode contacts 38 connected to the base portion 37.
And have. The base portion 37 is formed along the outer periphery of the detection area 32 and over the half circumference of the detection area 32. A terminal portion 37 a is formed at one end of the base portion 37. The terminal portion 37a is drawn out of the detection area 32.

The positive electrode contacts 38 extend linearly in a direction away from the base 37 and are arranged in parallel with each other with a space therebetween. The tips of the positive electrode contacts 38 are
It reaches just before the outer periphery of the detection region 32 located on the side facing the base 37.

The negative electrode pattern 36 has a base portion 40 curved in an arc shape, and a large number of negative electrode contacts 41 connected to the base portion 40.
And have. The base portion 40 is formed on the opposite side of the base portion 37 of the positive electrode pattern 35 with the center of the detection region 32 interposed therebetween, along the outer peripheral portion of the detection region 32, and over substantially half the circumference thereof. Therefore, the base portion 37 of the positive electrode pattern 35 and the base portion 40 of the negative electrode pattern 36 are arranged substantially symmetrically with the center of the detection region 32 interposed therebetween.

A terminal portion 40a is formed at one end of the base portion 40. The terminal portion 40a is drawn out of the detection region 32 at a position adjacent to the terminal portion 37a of the positive electrode pattern 35. The terminal portion 37a of the positive electrode pattern 35 and the terminal portion 40a of the negative electrode pattern 36 are connected to the microcomputer 19 via lead wires 42a and 42b, respectively.
Is connected to the input end of.

The negative electrode contacts 41 extend linearly in the direction away from the base portion 40, and are arranged in parallel with each other with a space therebetween. The tips of these negative contact points 41 are
It reaches just before the base 37 of the positive electrode pattern 35.

As is apparent from FIG. 5, the positive electrode contacts 38 and the negative electrode contacts 41 are alternately arranged so as to mesh with each other, and extend over substantially the entire detection region 32. The spacing S between the positive electrode contact 38 and the negative electrode contact 41 (see FIG. 7).
(Shown in FIG. 3) is defined such that the sphere 33 straddles, and the sphere 33 has a positive contact 38 and a negative contact 41.
The positive electrode pattern 35 and the negative electrode pattern 36.
And are electrically connected.

In the case of this embodiment, the vibration sensor 2
4 is supported by the grip 15 in a posture in which the positive electrode contact 38 and the negative electrode contact 41 are arranged in a direction orthogonal to the main moving direction of the hand operation part 6 during cleaning, that is, in the left-right direction. Therefore, grasp the grip 15 and suck the suction head 9
When it is moved back and forth, the sphere 33 rolls in the direction in which it crosses the positive electrode contact 38 and the negative electrode contact 41 alternately.

As shown in FIG. 8, the electric blower 3 of the cleaner body 2 and the macro computer 19 of the hand operation unit 6
Are connected to a commercial power supply 45. A triac 46 is provided between the electric blower 3 and the commercial power supply 45.
Is connected, and the output terminal of the microcomputer 19 is connected to the gate of the triac 46.

In the vacuum cleaner 1 having such a structure,
When an operator grips the grip 15 of the hand operation unit 6 and reciprocates the suction head 9 in the front-back direction along the surface C to be cleaned, the vibration accompanying the movement of the grip 15 is generated by the vibration sensor 2.
It is transmitted to 4. Due to this vibration, the spherical body 33 rolls along the rolling surface 28, and the rolling direction of the spherical body 33 is
It is almost the same as the moving direction of 5.

A large number of positive electrode contacts 38 and negative electrode contacts 41 are arranged in parallel with each other over the entire detection region 32 of the rolling surface 28 with a constant interval, and these positive electrode contacts 38 and negative electrode contacts 41 are cleaned. Since the sphere 33 extends in the left-right direction orthogonal to the main moving direction of the grip 15, the sphere 33 rolls in a direction that alternately traverses the positive electrode contact 38 and the negative electrode contact 41. By this rolling, the spherical body 33 alternately contacts the positive electrode contact 38 and the negative electrode contact 41, and the electric signal is intermittently connected between the positive electrode contact 38 and the negative electrode contact 41.

That is, the vibration sensor 24 is connected when the positive electrode contact 38 and the negative electrode contact 41 are electrically connected via the sphere 33 and when the sphere 33 is separated from the positive electrode contact 38 or the negative electrode contact 41 and electrically disconnected. The signal output from the device changes relatively. FIG. 9 is a time chart showing the transition of the signal output from the vibration sensor 24 during cleaning, that is, the voltage V _A applied to the input end of the microcomputer 19 (point A in FIG. 8B). As is apparent from the above, when the conduction between the positive contact 38 and the negative contact 41 is cut off, the voltage V _CC of the commercial power supply 45 rises and the voltage V _A is applied to the input end of the microcomputer 19.

On the other hand, as the sphere 33 rolls, the sphere 3
When the positive electrode contact 38 and the negative electrode contact 41 are electrically connected via 3, the voltage applied to the input end of the microcomputer 19 becomes zero. Therefore, as long as the grip 15 is moved back and forth to continue cleaning, the voltage input to the microcomputer 19 changes with the passage of time, and the microcomputer 19 determines that cleaning is actually performed.
As a result, a signal is input from the microcomputer 19 to the gate of the triac 46, and this triggers the triac 46 to transition to the conductive state. Therefore, the electric blower 3 is controlled so as to continue operation or increase the rotation speed.

When the cleaning operation is interrupted, for example, if the hand operating section 6 is left on the surface C to be cleaned, the movement of the hand operating section 6 is stopped, so that the spherical body 33 has the positive contact 38 or the negative contact 41. In contact with either or both terminals 3
It stands still in the state where 8 and 41 are conducted. When the sphere 33 stands still while being in contact with either the positive electrode contact 38 or the negative electrode contact 41, as shown in FIG.
Since the voltage V _A applied to the input terminal of 9 is stable, the microcomputer 19 determines that the cleaning is not actually performed when the voltage V _A does not change within the predetermined time T. .

As a result, no signal is input to the gate of the triac 46, and the triac 46 shifts to the non-conducting state. Therefore, the electric blower 3 is controlled so as to stop the operation or lower the rotation speed.

According to the electric vacuum cleaner 1 as described above, the operation of the electric blower 3 is automatically controlled according to the cleaning situation by detecting the movement of the hand operation unit 6 during the cleaning by the vibration sensor 24. be able to. Therefore, during cleaning, the first to fourth switch operating portions 21a to 21 of the hand operating portion 6 are
It is free from the troublesome work of operating d with a fingertip, and cleaning can be performed easily.

When the hand-held operating unit 6 is stopped for a certain period of time T, the electric blower 3 is automatically stopped or its rotation speed is lowered, so that it is unnecessary especially when cleaning is interrupted. Power consumption can be suppressed.

On the other hand, according to the vibration sensor 24 having the above structure, the positive contact 38 and the negative contact 41 on the rolling surface 28 are provided.
Are arranged in parallel with each other in the entire detection region 32 with an interval so that the spheres 33 straddle each other. Therefore, regardless of the position of the spheres 33, the spheres 33 and the positive contact 38 and the negative contact 41 are separated from each other. The positional relationship is kept the same. Therefore, even if the spherical body 33 rolls on the rolling surface 28 in an arbitrary direction, the spherical body 33 surely contacts the positive electrode contact 38 and the negative electrode contact 41.

As a result, the vibration detection sensitivity, which is determined by the diameter of the sphere 33 and the distance between the positive electrode contact 38 and the negative electrode contact 41, becomes constant over the entire detection region 32, and the sphere 3
It is possible to reliably detect whether or not cleaning is performed by utilizing the rolling of No. 3.

Further, the vibration sensor 24 has the positive contact 3
8 has a simple structure in which the spherical body 33 rolls on the negative contact 41, and therefore, it can be provided at a lower cost than the conventional infrared sensor, and the cost of the electric vacuum cleaner 1 is reduced accordingly. be able to.

In addition, since the vibration sensor 24 only needs to be able to detect the movement of the grip 15 during cleaning, it does not have to be exposed to the outside of the grip 15 unlike the conventional infrared sensor or temperature sensor. For this reason, it is possible to prevent damage due to contact with furniture or walls during cleaning, prevent malfunctions due to disturbances in advance, and reliably detect whether or not the above cleaning is performed. There is an advantage that the reliability in controlling the blower 3 is significantly improved.

In the above first embodiment,
Although the vibration sensor 24 is housed inside the grip 15, the present invention is not limited to this. For example, as shown by a chain double-dashed line in FIG. The vibration sensor 24 may be fixed to the outer peripheral surface and covered with the protective cover 50.

Further, the installation location of the vibration sensor 24 is not limited to the hand operation section 6, but is housed inside the head body 11 of the suction head 9 or inside the cleaner body 2, for example. Is also good.

The present invention is not limited to the above-mentioned first embodiment, and FIG. 10 shows a second embodiment of the present invention.

In the second embodiment, the shapes of the positive electrode pattern 35 and the negative electrode pattern 36 of the vibration sensor 24 are mainly different from those of the first embodiment, and the basics of the vibration sensor 24 other than the above. The configuration is similar to that of the first embodiment. Therefore, in the second embodiment, the first
The same components as those of the embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 10, the positive electrode contact 38 of the positive electrode pattern 35 has one first linear portion 61 and a large number of second and third linear portions 62 and 63. There is.

The first linear portion 61 extends linearly in the radial direction of the detection area 32 through the substantial center of the detection area 32. The first linear portion 61 is connected to the end portion of the base portion 37 opposite to the terminal portion 37a.

The second linear portion 62 is the same as the first linear portion 6
It is linked to 1. The second linear portions 62 extend in a direction orthogonal to the first linear portions 61, and are arranged in parallel with each other at intervals in the longitudinal direction of the first linear portions 61. The tip of the second linear portion 62 is
It reaches just before the base 40 of the negative electrode pattern 36.

The third linear portion 63 has a positive electrode pattern 35.
Is connected to the base portion 37 and is located on the opposite side of the second linear portion 62 with the first linear portion 61 sandwiched therebetween. The third linear portion 63 extends in a direction orthogonal to the first linear portion 61, and the first linear portion 6
1 are arranged parallel to each other at intervals in the longitudinal direction. These third linear portions 63 extend from the base portion 37 toward the first linear portions 61, and their tips are adjacent to the first linear portions 61.

The negative electrode contact 41 has a single first linear portion 65 and a large number of second and third linear portions 66 and 67, like the positive electrode contact 38.

The first linear portion 65 linearly extends in the radial direction of the detection area 32 through the substantial center of the detection area 32. The first linear portion 65 is connected to the end portion of the base portion 40 on the terminal portion 40a side. The first linear portion 65 is interposed between the first linear portion 61 and the tip of the third linear portion 63 of the positive electrode contact 38, and the first linear portion 65 is also present. It is arranged in parallel with 61.

The second linear portion 66 corresponds to the first linear portion 6
5 in series. The second linear portions 66 extend in a direction orthogonal to the first linear portions 65, and are arranged in parallel with each other at intervals in the longitudinal direction of the first linear portions 65. The second linear portion 66 corresponds to the positive contact 3
8 are arranged alternately with the third linear portions 63 so as to mesh with the third linear portions 63, and the tips of these second linear portions 66 are located immediately before the base portion 37 of the positive electrode pattern 35. Has reached

The third linear portion 67 has the negative electrode pattern 36.
Is connected to the base portion 40 of the first linear portion 65 and is located on the opposite side of the second linear portion 66 with the first linear portion 65 interposed therebetween.
The third linear portions 67 extend in a direction orthogonal to the first linear portions 65, and are arranged in parallel with each other at intervals in the longitudinal direction of the first linear portions 65. Then, the third linear portions 67 are alternately arranged with the second linear portions 62 so as to mesh with the second linear portions 62 of the positive electrode contact 38, and these third linear portions 67 are arranged. The tip of 67 is adjacent to the first linear portion 61 of the positive electrode contact 38.

The first to third portions 61 to 63, 65 to 67 of the positive electrode contact point 38 and the negative electrode contact point 41 extend over substantially the entire detection region 32. The first to third portions 61 to 63 of the positive electrode contact 38 and the first to third parts of the negative electrode contact 41.
To the third portion 65 to 67, the spacing S is equal to the sphere 3
The size of the sphere 33
The positive electrode pattern 35 and the negative electrode pattern 36 are electrically connected when the positive electrode pattern 38 and the negative electrode contact 41 are crossed over.

According to the vibration sensor 24 having such a configuration, the second and third linear portions 62, 6 of the positive electrode contact 38 are formed.
5, and the second and third linear portions 66 of the negative contact 41,
67 are parallel to each other at symmetrical positions across the center of the detection region 32, and are arranged alternately.

Therefore, the positive contact 38 and the negative contact 41
Even if the sphere 33 rolls on the rolling surface 28 in an arbitrary direction, the sphere 33 has a positive contact 38 and a negative contact 41.
Surely comes into contact with. As a result, similarly to the first embodiment, the detection sensitivity of vibration determined by the diameter of the sphere 33 and the distance between the positive electrode contact 38 and the negative electrode contact 41 becomes constant over the entire detection region 32, and cleaning is performed. It is possible to reliably detect whether or not it is broken.

Further, FIG. 11 discloses a third embodiment of the present invention.

The third embodiment is a further development of the first embodiment, and the basic structure of the vibration sensor 24 is the same as that of the first embodiment.

As shown in FIG. 11, a large number of positive electrode contacts 38 are provided.
In the portion corresponding to the center of the detection area 32, the negative electrode contact 41 and the negative electrode contact 41 are arranged in parallel and alternately. The negative electrode contact 41 has two positive electrode contacts 38 as a set at a position adjacent to the terminal portion 40 a of the base portion 40.
And the arrangement interval of the positive electrode contacts 38 is widened accordingly. Similarly, the positive electrode contacts 38 are interposed between the negative electrode contacts 41 as a set at a position off the center of the detection region 32, and the arrangement interval of the negative electrode terminals 41 is widened accordingly. .

Therefore, the positive contact 38 and the negative contact 4
1 has an area F ₁ of the arrangement interval becomes dense, and an area F ₂ where the arrangement interval is sparse. The region F ₁ is located in the central portion along the arrangement direction of both contacts 38, 41, and the region F ₂ is located outside the region F ₁ along the arrangement direction of both contacts 38, 41.

Further, in the case of the present embodiment, the vibration sensor 24 has a substantially vertical portion from the hand operation portion 6 of the suction pipe line 10 to the first and second extension pipes 8a and 8b as shown in FIG. The grip 15 is supported in such a posture that the area F _{2 in} which the contact gaps 38 and 41 are spaced apart from each other is located at the lower end of the detection area 32 when it is erected.

According to this structure, when the suction pipe line 10 is raised as described above in order to interrupt the cleaning,
The sphere 33 moves to a region F ₂ where the arrangement interval between the positive electrode contact 38 and the negative electrode contact 41 is sparse, and the sphere 33 stands still in contact with either the positive electrode contact 38 or the negative electrode contact 41.

Therefore, the voltage V _A applied to the input terminal of the microcomputer 19 remains stable, and the electric blower 3 is automatically controlled so as to stop the operation of the electric blower 3 or reduce the rotational speed thereof. Therefore, it is possible to surely recognize that the cleaning has been interrupted by merely raising the suction pipe line 10, and it is possible to prevent waste of electric power.

Further, in the region F ₂ , the arrangement interval between the positive electrode contact 38 and the negative electrode contact 41 is widened, so if the sphere 33 slightly rolls, the sphere 33 will move to the positive electrode contact 38.
And it becomes difficult to alternately contact the negative electrode contact 41. for that reason,
In the region F ₂ , the detection sensitivity of the vibration accompanying the rolling of the sphere 33 is lower than that in the region F ₁ , and even if some vibration is applied to the suction pipe line 10 and the suction head 9 from the outside, the microcomputer Voltage V applied to the input terminal of 19
_A does not change.

Therefore, the vibration transmitted from the outside is not erroneously recognized as the vibration due to the restart of the cleaning, and the electric blower 3 can be accurately controlled according to the usage status of the electric vacuum cleaner 1.

FIG. 12 discloses a fourth embodiment of the present invention.

The fourth embodiment is different from the first embodiment mainly in the shapes of the positive electrode pattern 35 and the negative electrode pattern 36 of the vibration sensor 24, but the basics of the other vibration sensors 24 are different. The configuration is similar to that of the first embodiment. Therefore, in the fourth embodiment, the first
The same components as those of the embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIG. 12, the positive electrode pattern 35 on the rolling surface 28 includes a circular base portion 70 located at the center of the detection region 32 and a large number of positive electrode contacts 71 radially extending from the base portion 70. Have The positive electrode contacts 71 are arranged at equal intervals in the circumferential direction of the detection region 32, and a terminal portion 71 a is formed at the end of one positive electrode contact 71. The terminal portion 71a is guided to the outside of the detection area 32.

The negative electrode pattern 36 includes an annular base portion 72,
The base 72 has a large number of negative electrode contacts 73 that extend radially inward from the inner periphery of the base 72. The base 72 is concentrically arranged with respect to the detection region 32, and has the positive contact 71.
Surrounds. The base portion 72 has an opening 72a separated along the circumferential direction, and the terminal portion 71a of the positive electrode contact 71 is wired through the opening 72a.

The negative electrode contacts 73 are arranged at intervals in the circumferential direction of the base 72. The negative electrode contacts 73 are respectively interposed between the positive electrode contacts 71, and one of the negative electrode contacts 73, which is connected to the opening 72 a of the base 72, is one negative electrode contact 73.
Has a terminal portion 73a. This terminal portion 73a is
It is guided to the outside of the detection area 32.

Each negative electrode contact 73 is adjacent to the positive electrode contact 71.
It has a pair of edge portions 74a and 74b that are parallel to.
Therefore, the negative electrode contact 73 is provided from the base 72 to the detection region 32.
It has an isosceles triangular shape that tapers in a tapering shape as it goes to the center of the positive electrode, and the edges 74a and 74b of the negative electrode contact 73 and the positive electrode contact 71 face each other with an interval such that the sphere 33 straddles.

Therefore, the positive contact 71 and the negative contact 73
Is arranged over the entire detection region 32, and when the sphere 33 straddles between the contacts 71 and 73, the positive electrode pattern 35 and the negative electrode pattern 36 are electrically connected. ing.

According to the vibration sensor 24 having such a structure, the positive contact 71 and the negative contact 73 on the rolling surface 28 are formed.
Are arranged in parallel with each other in the entire detection region 32 with an interval so that the sphere 33 is straddled, so that the sphere 3 can be located at any position on the rolling surface 28.
The positional relationship between the 3 and the positive contact 71 and the negative contact 73 is kept the same. Therefore, even if the spherical body 33 rolls on the rolling surface 28 in an arbitrary direction, the spherical body 33 will surely contact the positive electrode contact 71 and the negative electrode contact 73.

Therefore, the diameter of the spherical body 33 and the positive contact 7
The vibration detection sensitivity, which is determined by the distance between the negative electrode contact 73 and the negative contact 73, is substantially constant over the entire detection region 32.
It is possible to reliably detect whether or not cleaning is performed by utilizing the rolling of No. 3.

FIG. 13 discloses a fifth embodiment of the present invention.

The fifth embodiment is a development of the fourth embodiment, and the basic configuration of the vibration sensor 24 is the same as that of the fourth embodiment.

As shown in FIG. 13, the negative contact 73 has a non-conductive insulating region 80 in a portion surrounded by the edges 74a and 74b and the base 72. This insulating area 80
Has a triangular shape that gradually expands from the center of the detection region 32 toward the outside in the radial direction, and its width dimension is maximum at the boundary with the base 72. The insulating region 80 is formed on the edge 74 of the negative contact 73.
It is slightly recessed from a, 74b and the base 72.

In such a vibration sensor 24, if the sphere 33 is stopped in a state of straddling the positive electrode contact 71 and the negative electrode contact 73, the voltage applied to the input end of the microcomputer 19 tends to remain stable at 0. When external vibration is transmitted to the vibration sensor 24 at some time, the sphere 33 bounces, and contact / non-contact with the positive electrode contact 71 and the negative electrode contact 73 may be repeated. Therefore, the voltage applied to the input terminal of the microcomputer 19 fluctuates, and the microcomputer 19 may erroneously recognize that cleaning has started.

However, according to the above structure, the large number of negative electrode contacts 73 have the wide insulating region 80 surrounded by the edge portions 74a and 74b and the base portion 72, and the insulating region 80 is formed as a recess. Therefore, when the sphere 33 stands still on the rolling surface 28, for example, when cleaning is interrupted,
The probability that the sphere 33 stops in the insulating region 80 is dramatically increased.

Therefore, the sphere 33 bounces and the insulating region 80
Even if the contact and non-contact with the
3 as long as 3 is in the insulating area 80
The voltage applied to the input terminal of is not changed. Therefore, there is an advantage that the influence of external vibration can be ignored and the reliability of vibration detection is improved.

Then, the vibration sensor 24 of this embodiment
Has an excellent effect particularly when installed on the suction head 9 having a motor-driven rotating brush. That is,
Since the suction head 9 with the rotating brush is accompanied by minute vibration when the rotating brush rotates, this vibration is generated by the vibration sensor 2.
When transmitted to 4, the sphere 33 bounces as described above,
It may cause misrecognition.

However, if the sphere 33 remains in the insulating region 80 of the negative electrode contact 73, the voltage applied to the input end of the microcomputer 19 does not fluctuate even if the sphere 33 bounces. False recognition can be prevented.

In the above first, fourth and fifth embodiments, the upper wall 30 of the cover 27 defining the rolling space 31 is indicated by the two-dot chain line in FIGS. 6, 12 and 13. In addition, the convex portion 81 extending toward the center of the detection region 32
The rolling path of the sphere 33 may be defined so that the sphere 33 always rolls on the positive electrode contacts 38, 71 and the negative electrode contacts 41, 73.

Further, the vibration sensor according to the present invention is not specified for the operation control of the vacuum cleaner, but is used as a sensor for automatic extinguishing of the heating device or automatic lighting of the emergency lighting device, for example. Is also good.

[0121]

According to the vibration sensor of the present invention, no matter where the spherical body is on the rolling surface, the positional relationship between the spherical body and the positive electrode contact and the negative electrode contact is kept the same. When the ball rolls on the rolling surface in any direction, the sphere surely contacts the positive electrode contact and the negative electrode contact. Therefore,
The vibration detection sensitivity, which is determined by the diameter of the sphere and the distance between the positive electrode contact and the negative electrode contact, is substantially constant over the entire detection region, and the reliability of vibration detection is significantly improved. Further, according to the electric vacuum cleaner of the present invention, it is possible to reliably and accurately detect whether or not the cleaning is actually performed by utilizing the rolling of the sphere, and the operation of the electric blower can be performed in the cleaning status. Can be controlled automatically according to. Moreover, since the vibration sensor has a simple structure in which the sphere rolls along the rolling surface, the sensor itself becomes inexpensive, which contributes to the reduction in the cost of the electric vacuum cleaner and the vibration sensor is electrically operated. Since it is not necessary to expose it to the outside of the vacuum cleaner, the vibration sensor is less susceptible to the influence of disturbance, and there is an advantage that the reliability in controlling the operation of the electric blower is improved.

[Brief description of drawings]

FIG. 1 is a perspective view of an electric vacuum cleaner according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the electric vacuum cleaner showing a state where the suction pipe line is erected and cleaning is interrupted.

FIG. 3 is a cross-sectional view of a hand operation unit.

FIG. 4 is a perspective view of a vibration sensor.

FIG. 5 is a plan view showing the shapes of a positive electrode pattern and a negative electrode pattern on a rolling surface.

FIG. 6 is a sectional view of a vibration sensor.

FIG. 7 is a cross-sectional view showing a relationship between a sphere and a positive electrode contact and a negative electrode contact.

FIG. 8A is a block diagram showing a control system of the electric blower. FIG. 6B is a circuit diagram showing the connection between the microcomputer and the vibration sensor.

FIG. 9 is a time chart showing changes in voltage applied to the input terminal of the microcomputer during cleaning work.

FIG. 10 is a plan view showing the shapes of a positive electrode pattern and a negative electrode pattern on a rolling surface according to the second embodiment of the present invention.

FIG. 11 is a plan view showing the shapes of a positive electrode pattern and a negative electrode pattern on a rolling surface according to the third embodiment of the present invention.

FIG. 12 is a plan view showing the shapes of a positive electrode pattern and a negative electrode pattern on a rolling surface according to the fourth embodiment of the present invention.

FIG. 13 is a plan view showing the shapes of a positive electrode pattern and a negative electrode pattern on a rolling surface according to the fifth embodiment of the present invention.

[Explanation of symbols] 1 ... vacuum cleaner, 2 ... vacuum cleaner body, 3 ... electric blower, 6
… Hand control part, 9… Suction head, 10… Suction tube
Road, 24 ... Vibration sensor, 26 ... Base, 28 ... Rolling surface, 3
2 ... Detection area, 33 ... Sphere, 35 ... Positive electrode pattern, 36
... Negative electrode pattern, 37, 40 ... Base portion, 38, 71 ... Positive electrode
Contact, 41, 73 ... Negative contact, 61, 65 ... First linear shape
Part, 62, 66 ... Second linear part, 63, 67 ... Third
Line parts, 74a, 74b ... Edge, F1 ... Dense area, F2
… Sparse area.

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-2-209122 (JP, A) JP-A-61-178619 (JP, A) Actually open 4-118633 (JP, U) Actually open 61- 127427 (JP, U) Actual development 56-37030 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) G01H 1/00 A47L 9/28

Claims (6)

(57) [Claims] 1. A and base having a detection region on a flat rolling surface, a positive electrode pattern formed in the detection region of the base, and the negative electrode pattern formed in the detection region of the base, the rolling of the foundation are arranged on the surface, together with the base rolls along the rolling surface when the vibration, this rolling conductive to shift the conduction or non-conduction state between the positive electrode pattern and the negative electrode pattern comprising a sphere, a, based on the rolling of the sphere, the sphere and the positive electrode putter
In the vibration sensor that outputs a signal according to the positional relationship between the positive electrode pattern and the negative electrode pattern , the positive electrode pattern has a base portion along the outer peripheral portion of the detection region.
And extends linearly from the base toward the detection area
With a number of positive contacts arranged parallel to each other
The negative electrode pattern extends along the outer peripheral portion of the detection area.
Together with the base of the positive electrode pattern, the detection area
The bases that face each other with a space between them and the above-mentioned detection from this base
Extends linearly towards the area and is parallel to each other
A plurality of negative electrode contacts, the positive electrode contact and the negative electrode contact on the detection area.
There is an arrangement interval such that the spheres straddle each other, and they are arranged alternately.
Is placed and extends over the entire detection area,
The tip of the positive electrode contact is located just before the base of the negative electrode pattern
In addition, the tip of the negative electrode contact is the positive electrode pattern.
A vibration sensor that is located immediately in front of the base of the . Wherein a base having a detection region on a flat rolling surface, a positive electrode pattern formed in the detection region of the base, and the negative electrode pattern formed in the detection region of the base, the rolling of the foundation are arranged on the surface, together with the base rolls along the rolling surface when the vibration, this rolling conductive to shift the conduction or non-conduction state between the positive electrode pattern and the negative electrode pattern comprising a sphere, a, based on the rolling of the sphere, the sphere and the positive electrode putter
In the vibration sensor that outputs a signal according to the positional relationship between the positive electrode pattern and the negative electrode pattern , the positive electrode pattern has a base portion along the outer peripheral portion of the detection region.
And a positive electrode contact extending from the base toward the detection area
And the positive contact includes the detection area from the end of the base.
A first linear portion extending linearly through substantially the center of the region,
Direct from this first linear part to the side opposite to the base.
They extend linearly and are arranged in parallel at intervals.
A plurality of second linear portions formed from the base and the first
Extends linearly toward the linear part and keeps the distance from each other.
A plurality of third linear portions arranged in parallel with each other.
And, the negative electrode pattern, when along the outer periphery of the detection area DOO
The detection area is placed between the base of the positive electrode pattern.
The base located on the opposite side of the sandwich and the above detection from the base
A negative electrode contact extending toward the region, wherein the negative electrode contact is
Straight line from the end of the base through the approximate center of the detection area
A first linear portion extending from the
Linearly extending toward the side opposite to the base and
A large number of second linear portions arranged in parallel at intervals
And linearly from the base toward the first linear portion
Many of them extend and are placed in parallel with each other.
A number of third linear portions, and the first to third linear portions of the positive electrode contact and the first to third linear portions of the negative electrode contact are all of the detection region.
A vibration sensor, wherein the spheres are alternately arranged with an interval such that the spheres straddle the area . 3. A foundation having a detection region on a flat rolling surface, a large number of positive electrode contact formed in the detection region of the base, a large number of the negative electrode contact formed in the detection region of the base, the arranged on the rolling surface of the substrate, together with the base rolls along the rolling surface when vibration, migration by the rolling in a conductive or non-conductive state between the positive electrode contact and the negative electrode contact comprising a conductive sphere to the, on the basis of the rolling of the sphere, the vibration sensor outputs a signal corresponding to the positional relationship between the sphere and the positive electrode contact or the negative contact, the positive electrode contact or the One of the contacts of the negative electrode extends radially from the center of the detection region,
Further, the other contact, with being interposed between one of adjacent contacts have edges disposed parallel to one contact above, the one contact and said other contact the upper
There is an interval so that the spheres straddle each other
The vibration sensor is characterized by being alternately arranged in . A cleaner body having a wherein electric blower, is connected to the cleaner body, a suction line including the operation portion for controlling the electric blower, together connected to the inlet line, the surface being cleaned a suction head is moved along, the cleaner main body, a vibration sensor according to the operation portion, one of 3 to not above claim 1 is installed in any of the above suction pipe or the suction head and,
An electric vacuum cleaner, comprising: a control signal for controlling the operation of the electric blower according to a signal output from the vibration sensor. A cleaner body having a 5. An electric blower, is connected to the cleaner body, a suction line including the operation portion for controlling the electric blower, together connected to the inlet line, the surface being cleaned a suction head is moved along, anda vibration sensor installed in one of the operation portion or the suction head, by a signal output from the vibration sensor, to control the operation of the electric blower In the vacuum cleaner, the vibration sensor includes a base having a detection area on a flat rolling surface and a plurality of linear positive electrodes installed in the detection area of the base.
Contact points and many linear negative electrodes installed in the detection area of the above-mentioned substrate
Placed on the contact point and rolling surface of the base, when the base vibrates.
Rolling along the above rolling surface and
Conductive or non-conductive state between the positive contact and the negative contact
Equipped with a conductive sphere to transfer to
Based on the sphere and the positive electrode contact or the negative electrode contact
It outputs a signal according to the positional relationship, the positive contact and the negative contact of the vibration sensor,
Arranged in parallel with each other with an arrangement interval such that the spheres straddle
And is extended over the entire detection area.
Moni, the vibration sensor, the the moving direction of the positive electrode contact and the head suction operation portion or when cleaning the anode contact is supported on the operation portion or the suction head and along a direction intersecting orientation The electric vacuum cleaner characterized by having. A cleaner body having a wherein electric blower, is connected to the cleaner body, a suction pipe having an operation portion for controlling the electric blower, together connected to the inlet line, the surface being cleaned comprising a suction head is moved along, the operation portion, and a vibration sensor installed in any of the suction pipe or the suction head, upper
A vacuum cleaner according to a signal output from the serial vibration sensor for controlling the operation of the electric blower, the vibration sensor includes a base having a detection region on a flat rolling surface, placed in the detection region of the base Multiple linear positive electrodes
Contact points and many linear negative electrodes installed in the detection area of the above-mentioned substrate
Placed on the contact point and rolling surface of the base, when the base vibrates.
Rolling along the above rolling surface and
Conductive or non-conductive state between the positive contact and the negative contact
To a conductive sphere to migration, the rolling of the sphere
Based on the sphere and the positive electrode contact or the negative electrode contact
And outputs a signal corresponding to the position relationship, the positive electrode contact and the negative contact of the vibration sensor,
Includes a region where the arrangement interval is dense, and an area where the arrangement interval is sparse, the vibration sensor, when allowed to stand up the suction pipe, the suction tube to the attitude which the sparse area becomes lower vacuum cleaner, characterized in that it is supported on either the road or the suction head.