JP3857740B2 - Vacuum cleaner - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vacuum cleaner, and more particularly, a dust collection amount display device for visually displaying the amount of dust accumulated in a dust collection bag housed in a dust collection chamber. It is related with the provided electric vacuum cleaner.
[0002]
[Prior art]
Conventionally, as a vacuum cleaner, a dust collection amount display device (dust collection meter) as shown in JP-A-5-38319 (A47L 9/19) and JP-A-5-49575 (A47L 9/19) is used. In addition, a built-in vacuum cleaner body in the vicinity of the dust collection chamber provided with a dust collection chamber at the front and an electric blower chamber communicating with the dust collection chamber at the rear is known.
[0003]
The dust collection chamber in such a vacuum cleaner communicates with the outside of the vacuum cleaner main body through a suction port provided at the front of the vacuum cleaner main body, and the dust collection chamber is detachably connected to the suction port. A dust bag is stored.
[0004]
In the former dust collection amount display device described in the former publication, one end of a telescopic and elastic diaphragm is fixed to an indicator that is slidably disposed in a pipe, and the indicator is sucked into the pipe by the diaphragm. The diaphragm is urged and the other end of the diaphragm is airtightly fixed to the opening side of the pipe. The dust collection amount display device described in the latter publication is composed of a bottomed cylindrical and bellows-shaped sealing valve body and a pointer cylinder having the sealing valve body inside, and the crest and trough of the sealing valve body The color has been changed.
[0005]
According to these dust collection amount display devices, the amount of air passing through the dust collection chamber gradually decreases as the electric blower is started and dust is accumulated in the dust collection bag, and the amount of dust collection is reduced. When the chamber has a constant negative pressure, the indicator or the sealing valve body housed in the pipe or the pointer cylinder in the dust collection amount display device is pushed by the outside air and moves in a direction to contract the diaphragm or the sealing valve body. By displaying the amount of movement of the diaphragm or the sealing valve body to the outside through the window portion, it is possible to visually know the amount of dust accumulated in the dust bag.
[0006]
[Problems to be solved by the invention]
However, in these dust collection amount display devices, the movement of the diaphragm or the sealing valve body is due to its own elastic force, and the diaphragm or the sealing valve body is thin, so that the usage time is short. If it increases, the elastic force tends to be lost due to repeated expansion and contraction, which may cause damage or malfunction of the diaphragm or the sealed valve body.
[0007]
In addition, the pipes or pointer cylinders in these dust collection amount display devices are incorporated in the vicinity of the dust collection chamber of the vacuum cleaner main body via a connection part or communication pipe, and the connection part or communication pipe usually saves the installation space. In order to do so, it is formed in a bent shape. For this reason, the air flowing inside the pipe or the pointer tube is bent at the connection portion or the communication tube portion, and the diaphragm or the sealing valve body cannot be expanded and contracted evenly. There was a situation in which the inner wall was rubbed, and there was a risk of damage or malfunction of the diaphragm or the sealed valve body or the indicator.
[0008]
Therefore, in order to solve these problems, it is conceivable to provide a spring for energizing the diaphragm or the sealing valve body in the direction in which the diaphragm or the sealing valve body extends inside the diaphragm or the sealing valve body. However, when the diaphragm or the sealing valve body contracts, they are caught in the pitch of the spring, and the contraction is not performed well, and the diaphragm or the sealing valve body may be damaged by long-term use.
[0009]
The present invention has been made in consideration of such circumstances, and a main object of the present invention is to provide a vacuum cleaner incorporating a dust collection amount display device capable of preventing breakage and malfunction of components. There is.
[0010]
[Means for Solving the Problems]
According to the present invention, there is provided an electric blower body and a dust collection chamber for storing the electric blower, the vacuum cleaner main body having the suction side of the electric blower communicated with the dust collection chamber, the vacuum cleaner main body, and one end thereof. A dust collection amount display device that is connected to the intake side of the electric blower and the other end communicates to the outside of the cleaner body and displays the amount of dust collection in the dust collection chamber. A transparent pipe that communicates with the outside of the cleaner body through the intake port, a communication pipe that is attached to the opening at the other end of the pipe and communicates with the inside of the pipe and the intake side of the electric blower, and a pipe of the communication pipe A cylindrical elastic seal body, one end of which is airtightly attached to the side end and arranged to be expandable and contractible in the pipe, and provided at the other end of the seal body. A moving display body, a guide cylinder disposed in the seal body, and the guide cylinder Is disposed in a state across between the communicating tube display body, vacuum cleaner, characterized in that consisted spring for biasing the display member to the inlet side of the pipe is provided.
[0011]
[Means for Solving the Problems]
According to the present invention, there is provided an electric blower body and a dust collection chamber for storing the electric blower, the vacuum cleaner main body having the suction side of the electric blower communicated with the dust collection chamber, the vacuum cleaner main body, and one end thereof. A dust collection amount display device that is connected to the intake side of the electric blower and the other end communicates to the outside of the cleaner body and displays the amount of dust collection in the dust collection chamber. A transparent pipe that communicates with the outside of the cleaner body through the intake port, a communication pipe that is attached to the opening at the other end of the pipe and communicates with the inside of the pipe and the intake side of the electric blower, and a pipe of the communication pipe A cylindrical elastic seal body, one end of which is airtightly attached to the side end and arranged to be expandable and contractible in the pipe, and a pipe that is airtightly provided at the other end of the seal body and expands and contracts with the expansion and contraction of the seal body. a display body which moves the inner, the display body and is integrally formed, the sealing body The guide cylinder is provided, and the guide cylinder is arranged in a state of being spanned between the communication pipe and the display body in the guide cylinder, and is configured to include a spring that biases the display body toward the intake port side of the pipe. A vacuum cleaner is provided.
[0012]
The seal body and the display body are housed in a transparent pipe. The storage state is a state in which the display body is positioned on the side of the intake port provided in the pipe and one end of the seal body is in contact with the inner side of the opposite end.
[0013]
For example, the guide tube is provided continuously with the display body or integrally with the communication tube, and is disposed in the seal body. This guide cylinder functions as a guide when the seal body expands and contracts.
[0014]
The spring is disposed in the guide tube so as to be bridged between the communication tube and the display body. As this spring, for example, a compression type coil spring is used, and a biasing force to the inlet side of the pipe is applied to the display body through the guide tube or directly. With this urging force, the display body can be positioned at the end of the pipe on the inlet side.
[0015]
The seal body is preferably connected to each of the communication pipe and the display body by concavo-convex engagement, and more preferably, one end thereof is sandwiched between the communication pipe and the pipe. If comprised in this way, it will become possible to connect a seal body, a communicating pipe, and a display body to a more airtight state, and it becomes possible to improve assembly property.
[0016]
The dust collection amount display device according to the present invention is preferably provided with means for preventing the guide tube from sticking to the communication tube when the display body moves to the communication tube side.
[0017]
Examples of means for preventing the guide tube from sticking to the communication tube when the display body moves to the communication tube include, for example, a plurality of ribs provided on the inner wall of the communication tube, a notch provided at the end of the guide tube, and a side surface of the guide tube There are holes to be provided.
[0018]
If comprised in this way, since it will become possible to shrink | contract a spring uniformly, generation | occurrence | production of buckling can be prevented. The dust collection chamber has a constant negative pressure as dust accumulates in the dust bag, but a gap is secured between the end of the guide tube on the communication tube side and the inner wall of the communication tube using multiple ribs. As a result, the air flow in the pipe becomes uniform, and the display body “buzz” phenomenon that occurs when the display body moves in the direction of contraction of the seal body (a part of the display body moves while hitting the inner wall of the pipe) Phenomenon).
[0019]
For example, a seal body made of a bellows body or a straight pipe body is used. In the case of a bellows body, if the material is polyvinyl chloride resin and the length when stretched is 20 to 40 mm, the inner diameter is 6 to 8 mm, and the outer diameter is about 10 to 15 mm, the wall thickness is 0.4 to 0.5 mm is preferred. If it is less than 0.4 mm, it is difficult to form the bellows, and if it exceeds 0.5 mm, the seal body will not bend at a load that is usually given.
[0020]
Moreover, it is preferable that the apex angle of each peak when the bellows body made of polyvinyl chloride resin is extended is 45 to 65 degrees. If the angle is less than 45 degrees, the amount of expansion and contraction is too small and the amount of movement of the display body is not sufficient. If the angle exceeds 65 degrees, the amount of deflection in the radial direction becomes too large and the device may not operate due to interference with the pipe or coil spring. Because there is.
[0021]
In the dust collection amount display device according to the present invention, instead of providing the display body independently of the seal body, the function of the display body may be provided to a part of the seal body. That is, a part of the seal body—the part corresponding to the other end—may be formed in a closed shape, and the part and a predetermined part connected thereto may be colored differently from the other parts.
[0022]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, three embodiments of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to these.
[0023]
1, the vacuum cleaner 50 to the electric vacuum cleaner D ₁ ~ ₃ is incorporated according to the present invention, the internal structure seen from the left side shown.
[0024]
This electric vacuum cleaner 50 has a canister type vacuum cleaner body 51. The cleaner body 51 mainly includes a lower case 52, a dust collection lid 53, and a rear upper case 54. And the inside is divided into the dust collection chamber 55 provided in the front, and the electric blower chamber 56 provided in the back.
[0025]
A dust collection bag 57 is detachably disposed in the dust collection chamber 55. The dust collection bag 57 is adapted to receive intake air from an intake port 61 provided at the front of the dust collection chamber 55. An electric blower 58 is disposed in the electric blower chamber 56.
[0026]
A horizontal shelf 59 is provided at the front upper part of the dust collection chamber 55. Then, the dust collecting quantity display device D ₁ ~ ₃ are placed on the ledge 59, is covered with a cover 60 before arranged detachably on the front.
[0027]
In FIG. 1, reference numeral 62 denotes a vertical grid-like partition wall that serves as a partition between the dust collection chamber 55 and the electric blower chamber 56, and the partition wall 62 is provided with a number of vent holes. A filter 63 is detachably attached to the front of the partition wall 62. An exhaust port 64 is provided on the rear surface of the rear upper case 54. A filter 65 is detachably attached in front of the exhaust port 64.
[0028]
Note that FIG. 2 shows a configuration in which the lower case 52 with the front cover 60 removed is viewed from the front.
[0029]
Embodiment 1
As shown in FIG. 3, the dust collecting quantity display apparatuses D ₁ according to the first embodiment includes a communication pipe 1, and the elastic sealing body 2, the display member 3, a transparent pipe 4, the guide tube 5, the compression A mold coil spring 6 is provided.
[0030]
Both ends of the communication pipe 1 are open, and one end 1a thereof is attached to an attachment hole provided in the front surface of the dust collection chamber 55 via a packing (not shown) so as to communicate with the dust collection chamber 55. . The seal body 2 is a stretchable cylindrical body made of polyvinyl chloride resin. Both end portions are open, and one end portion is coaxially connected to the other end portion 1b of the communication tube 1.
[0031]
The display body 3 has a bottomed cylindrical shape provided in a state in which the other end portion of the seal body 2 is closed. The pipe 4 is cylindrical with both ends opened, and has a circular air inlet 4a at one end. The intake port 4 a communicates with the outside air and has a smaller diameter than the outer diameter of the circular free end of the display body 3. The pipe 4 accommodates the display body 3 and the seal body 2 in such a state that the display body 3 faces the air inlet 4a and one end of the seal body 2 is airtightly inscribed at the other end 4b.
[0032]
The guide tube 5 is provided so as to project from the display body 3 and has a diameter that does not interfere with the seal body 2, reaches the inside of the communication pipe 1 through the inside of the seal body 2, and is spaced from the bag portion. And is fitted into the communication pipe 1 loosely with respect to the diameter direction of the communication pipe 1. The coil spring 6 is loosely fitted into the diameter direction of the guide tube 5 and the diameter direction of the communication tube 1 from the inside of the guide tube 5 to the inside of the communication tube 1. And the display body 3 is urged | biased to the inlet 4a side so that the free end part of the display body 3 may block the inlet 4a of the pipe 4 from the inner side.
[0033]
As shown in FIG. 4 to FIG. 7, the communicating pipe 1 has one end 1 a that opens in a substantially rectangular shape and the other end 1 b that opens in a circular shape, and the one end 1 a and the other end 1 b are mutually connected. The positional relationship is substantially perpendicular. On the inner wall of the bag portion of the communication pipe 1, four ribs 1c are formed in a raised shape.
[0034]
These four ribs 1c are formed so that the central angle between adjacent ones is 90 degrees. These ribs 1c determine the position of the end of the coil spring 6 on the side of the communication tube 1, and when the coil spring 6 contracts, the protruding end portion 5a of the guide tube 5 and the inner wall of the bag portion of the communication tube 1 closely contact each other. This is intended to prevent this.
[0035]
On the outer surface of the other end 1b of the communication tube 1, one annular rib 1d is provided as an engaging convex portion.
[0036]
As shown in FIGS. 8 and 9, the display body 3 is provided with four raised portions extending in the axial direction on the outer wall surface thereof. The display body 3 slides on the cylindrical inner wall surface of the pipe 4 at these raised portions. Reference numeral 3 b denotes an opening at the free end of the display body 3. The end surface of the opening 3 b comes into contact with the inner edge of the intake port 4 a of the pipe 4. One annular rib 3a as an engaging convex portion is provided on the outer surface at the end of the display body 3 on the guide tube 5 side.
[0037]
As shown in FIGS. 10 to 12, the seal body 2 is composed of a bellows body having a plurality of peaks 2 c. Each of the inner surfaces of the one end portion and the other end portion of the seal body 2 is provided with one circumferential groove 2a, 2b as a recess for engagement. The circumferential groove 2a on the one end side is engaged and connected to the rib 1d of the communication pipe 1, and the circumferential groove 2b on the other end side is engaged and connected to the rib 3a of the display body 3 to communicate with the seal body 2 and the communication pipe. 1 and the engagement part between the seal body 2 and the display body 3 are kept airtight.
[0038]
The seal body 2 has a length of 30.0 mm when assembled at a predetermined position in the pipe 4, an inner diameter of 8.0 mm, an outer diameter on one end side of 14.0 mm, and a length on the other end side. The outer diameter is 12.0 mm. The bellows body is molded so that the apex angle α of one peak 2c when the bellows body is extended is 60.0 degrees, and the thickness t of the bellows body is 0.45 mm.
[0039]
FIG. 13 and FIG. 14 respectively show the planar shape of the pipe 4 and the side shape seen from one end. The pipe 4, when the dust collection amount display apparatuses D ₁ is placed on a horizontal shelf 59 shown in FIGS. 1 and 2, the front cover 60 is covered, leaving a length intermediate section. The front cover 60 is formed with a substantially rectangular window opening facing the middle part of the length of the pipe 4.
[0040]
According to the dust collection amount display device D ₁ of such a vacuum cleaner, the amount of air passing through the dust collection chamber 55 gradually decreases as the electric blower 58 is activated and dust is accumulated in the dust collection bag 57. , The pressure drops. When the dust collection chamber 55 in which the amount of passing air is reduced becomes a constant negative pressure, the display body 3 housed in the pipe 4 in the dust collection amount display device D ₁ is connected to the atmospheric pressure and the atmospheric pressure in the dust collection chamber 55. The seal body 2 moves in a direction to contract against the urging force of the coil spring 6 due to the atmospheric pressure difference.
[0041]
Then, as shown in FIG. 15, the guide cylinder 5 moves to the maximum extent toward the protruding end 5 a inside the communication pipe 1 communicating with the dust collection chamber 55, and is pushed by the display body 3 along with this. When the seal body 2 contracts to the maximum extent, the entire display body 3 can be seen from the window opening of the front cover 60 through the transparent pipe 4.
[0042]
Thus, in the dust collecting quantity display device D _1, the amount of movement of the display member 3, by displaying to the outside through a window opening of the front cover 60, dust which has been integrated inside the dust bag 57 You can see the amount of the amount visually.
[0043]
As shown in FIGS. 3 and 15, the end portion of the coil spring 6 on the side of the communication tube is reliably captured by the four ribs 1 c on the inner wall of the bag portion of the communication tube 1 and is located inside these. Therefore, since the coil spring 6 can be evenly contracted, occurrence of buckling can be prevented. Further, since the guide cylinder 5 functions as a guide when the seal body 2 expands and contracts, the seal body 2 can be expanded and contracted evenly, and a part of the outer surface of the seal body 2 and the display body 3 is rubbed by the inner wall of the pipe 4. It is possible to prevent the risk of being carried out. In addition, the guide cylinder 5 can prevent the seal body 2 from biting into the coil spring 6.
[0044]
In addition, as shown in FIG. 15, when the guide cylinder 5 moves to the maximum extent, the protruding end portions 5 a abut against the four ribs 1 c of the communication pipe 1, so that the protruding end portions 5 a of the guide cylinder 5 And a gap between the inner wall of the communication pipe 1 is secured. Therefore, even when the dust collection chamber 55 becomes a constant negative pressure as dust is collected in the dust collection bag 57, the pipe is formed by the gap between the protruding end portion 5a of the guide cylinder 5 and the inner wall of the communication pipe 1. The flow of air in 4 becomes uniform, and the “battery” phenomenon of the display body 3 that occurs when the display body 3 contracts the seal body 2 can be prevented. Note that, as described above, the same effect can be obtained by a configuration in which an end notch of the guide cylinder 5 is provided or a side hole of the guide cylinder 5 is provided.
[0045]
Embodiment 2
As shown in FIG. 16, the dust collection amount display device D _{2 according to the second} embodiment includes a communication pipe 1, an elastic seal body 12, a pipe 4, a guide cylinder 15, and a coil spring 6.
[0046]
The seal body 12 has a cylindrical shape with a bottom that can be expanded and contracted, which is made of polyvinyl chloride resin. That is, the seal body 12 is composed of a bellows body having a plurality of peaks 12c, and the other end portion is formed in a closed shape. Then, a part of the mountain 12c connected to that part is colored red to make a red part 12d, and the remaining mountain 12c is colored blue to make a blue part 12e. Note that the closed portion of the seal body 12 and the red portion 12d function as a substitute for the display body 3 in the dust collection amount display device D1 according to the _first embodiment.
[0047]
Each of the inner surfaces of the one end portion and the other end portion of the seal body 12 is provided with one circumferential groove 12a, 12b as a recess for engagement. The circumferential groove 12 a on one end side is engaged with and connected to a rib 1 d (shown in FIG. 4) of the communication tube 1, and the circumferential groove 12 b on the other end side is provided on the proximal end portion of the guide tube 15. It is engaged and connected to an annular rib (not shown) as a joint convex portion. Further, the protruding side end portion of the guide tube 15 is fitted into the communication tube 1 loosely in the diameter direction of the communication tube 1.
[0048]
The configuration and operation of other parts of the dust collection amount display device D ₂ are the same as those of the dust collection amount display device D ₁ .
[0049]
As shown in FIG. 16, in the dust collection amount display device D ₂ , the red portion 12 d of the seal body 12 is covered with the cover 7 when not in operation, and the seal body 12 is passed through the transparent pipe 4 from the window opening 8. The blue portion 12e is visible.
[0050]
Then, as shown in FIG. 17, when the seal body 12 contracts to the maximum during operation, the blue portion 12e is covered with the cover 7 and cannot be seen, and the entire red portion 12d of the seal body 12 contracted from the opening 8 is visible. Become visible.
[0051]
The effect exhibited by the dust collection amount display device D ₂ is the same as that of the dust collection amount display device D ₁ .
[0052]
Embodiment 3
As shown in FIG. 18, the dust collecting quantity display device D ₃ according to the third embodiment includes a communication pipe 1, and the elastic sealing member 22, and the display member 3, the pipe 4, the guide tube 5, a coil spring 6 It is equipped with.
[0053]
The seal body 22 is an expandable / contractable cylindrical member made of polyvinyl chloride resin. That is, the seal body 22 includes a straight tube body 22c having one end connected to the communication pipe 1 having a large diameter and the other end connected to the display body 3 having a small diameter. Each of the inner surfaces of the one end portion and the other end portion of the seal body 22 is provided with one circumferential groove 22a, 22b as a recess for engagement. The circumferential groove 22a on the one end side is engaged and connected to the rib 1d (shown in FIG. 4) of the communication tube 1, and the circumferential groove 22b on the other end side is the rib 3a (shown in FIG. 8) of the display body 3. It is a part engaged and connected to.
[0054]
The other parts of the dust collection amount display device D _{3 have} the same configuration, operation and effect as those of the dust collection amount display device D ₁ .
[0055]
【The invention's effect】
According to the dust collection amount display device for a vacuum cleaner according to claim 1 of the present invention, the display body is moved by the elastic force of the spring, not by the elastic force of the sealing body as in the prior art. Even if it increases, there is no possibility that the elastic force is lost, and therefore it is possible to prevent the possibility that the seal body is damaged or malfunctions. In addition, since the guide cylinder functions as a guide when the seal body expands and contracts, the seal body can be expanded and contracted evenly, and the possibility that the outer surface of the seal body or the display body is rubbed by the inner wall of the pipe is prevented. Therefore, it is possible to prevent a risk of breakage or malfunction of these constituent members. Furthermore, since the guide cylinder is interposed between the seal body and the spring, the seal body is not bitten by the spring when the seal body is contracted, and malfunction and damage to the seal body can be prevented.
[0056]
According to the dust collection amount display device for a vacuum cleaner according to claim 2 of the present invention, it is possible to improve the airtightness of the connecting portion between the seal body and the communication pipe and to hold the seal body more reliably. Can do.
[0057]
According to the dust collection amount display device for a vacuum cleaner according to claim 3 of the present invention, the spring can be uniformly contracted, so that occurrence of buckling can be prevented. Also, as dust accumulates in the dust bag, the dust collection chamber has a constant negative pressure, but the guide tube is connected to the end of the guide tube on the communication tube side and the communication tube by means of preventing the guide tube from sticking to the communication tube. A gap is ensured between the inner wall of the display and the flow of air in the pipe is uniform, thereby preventing the “chatter” phenomenon of the display body that occurs when the display body moves in a direction to contract the seal body. it can.
[0058]
According to the dust collection amount display device for a vacuum cleaner according to claim 4 of the present invention, since the seal body is composed of the bellows body rich in shock absorption, the movement of the display body in the pipe is made smoother. be able to.
[0059]
According to the dust collection amount display device for a vacuum cleaner according to claim 5 of the present invention, the bellows body seal body made of polyvinyl chloride resin can be easily molded, and is usually applied to this kind of dust collection amount display device. It is possible to ensure a proper deflection of the sealing body with respect to a load to a certain extent.
[0060]
According to the vacuum cleaner of claim 6 of the present invention, when the display body moves in the pipe by the expansion and contraction of the bellows body seal body with respect to a load that is normally applied to this kind of dust collection amount display device. The amount of movement becomes moderate, and the amount of deflection in the radial direction of the bellows body seal body can be made moderate.
[0061]
According to the vacuum cleaner of claim 7 of the present invention, it is excellent in moldability of the seal body and is advantageous in terms of cost.
[0062]
According to the vacuum cleaner of the eighth aspect of the present invention, it is possible to omit the display body, and it is possible to improve the assemblability and reduce the cost by reducing the number of parts.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of an internal configuration of an electric blower incorporating a dust collection amount display device for a vacuum cleaner according to Embodiments 1 to 3 of the present invention as viewed from the left side.
FIG. 2 is an explanatory diagram of an internal configuration when a front portion of the vacuum cleaner of FIG. 1 is viewed from the front.
FIG. 3 is an explanatory diagram of an overall configuration when the dust collection amount display device of the electric vacuum cleaner according to Embodiment 1 of the present invention is not in operation.
4 is a front view of a communication pipe constituting the dust collection amount display device of FIG. 3; FIG.
5 is a rear view of the communication pipe of FIG. 4;
6 is a right side view of the communication pipe of FIG. 4. FIG.
7 is a cross-sectional view of the communication pipe of FIG. 4 as viewed from the left side.
8 is a front view of a display body and a guide cylinder that constitute the dust collection amount display device of FIG. 3;
9 is a left side view of the display body and guide cylinder of FIG.
10 is a front view of a seal body constituting the dust collection amount display device of FIG. 3. FIG.
11 is a left side view of the communication pipe of the seal body of FIG.
12 is a longitudinal sectional view of the seal body of FIG.
13 is a front view of a pipe constituting the dust collection amount display device of FIG. 3;
14 is a left side view of the pipe of FIG.
15 is an explanatory diagram of the entire configuration when the dust collection amount display device of FIG. 3 is in operation.
FIG. 16 is an explanatory diagram of the overall configuration when the dust collection amount display device for a vacuum cleaner according to Embodiment 2 of the present invention is not in operation.
17 is an explanatory diagram of the overall configuration when the dust collection amount display device of FIG. 16 is in operation.
FIG. 18 is an explanatory diagram of the overall configuration when the dust collection amount display device for a vacuum cleaner according to Embodiment 3 of the present invention is not in operation.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Communication pipe 1a One end part 1b The other end part 1c Rib 1d Rib (engaging convex part)
2 Seal body 2a Circumferential groove (engagement recess)
2b Circumferential groove (engagement recess)
2c Mountain 3 Display body 3a Rib (engagement convex part)
3b Opening 4 Pipe 4a Inlet 4b Other end 5 Guide tube 5a Projecting end 6 Coil spring 12 Sealing body 12a Circumferential groove (engaging recess)
12b Circumferential groove (engagement recess)
12c Mountain 12d Red portion 12e Blue portion 15 Guide tube 15a Projecting end portion 22 Seal body 22a Circumferential groove (engagement recess)
22b Circumferential groove (engagement recess)
22c Straight pipe body 50 Vacuum cleaner 51 Vacuum cleaner body 55 Dust collection chamber 57 Dust collection bag

Claims (7)

A vacuum cleaner main body having an electric blower chamber and a dust collection chamber for storing the electric blower, the suction side of the electric blower communicating with the dust collection chamber, and one end of the vacuum blower main body provided on the suction side of the electric blower A dust collection amount display device that communicates with the other end of the vacuum cleaner body and displays the amount of dust collection in the dust collection chamber,
A transparent pipe that communicates the dust collection amount display device to the outside of the cleaner body through an intake port formed at one end, and an opening at the other end of the pipe are connected to the inside of the pipe and the intake side of the electric blower. A communication pipe to be communicated, a cylindrical elastic seal body, one end of which is airtightly attached to the pipe side end of the communication pipe, and arranged to extend and contract in the pipe, and the other end of the seal body is airtight A display body that is provided and moves in the pipe as the seal body expands and contracts; a guide cylinder that is integrally formed with the display body and disposed in the seal body; and a communication tube and a display body that are provided in the guide cylinder. And a spring that urges the display body toward the intake port side of the pipe.   2. The electric vacuum cleaner according to claim 1, wherein the one end of the seal body is sandwiched between a communication pipe and a pipe. 3. The electric vacuum cleaner according to claim 1, further comprising means for preventing the guide tube from coming into close contact with the communication pipe when the display body moves toward the communication pipe.   The electric vacuum cleaner according to any one of claims 1 to 3, wherein the seal body is a bellows body.   The vacuum cleaner according to claim 4, wherein the sealing body is made of polyvinyl chloride resin, and the thickness of the bellows body is 0.4 to 0.5 mm.   6. The electric vacuum cleaner according to claim 4, wherein the sealing body is made of polyvinyl chloride resin, and the apex angle of each mountain when the bellows body is extended is 45 to 65 degrees.   The vacuum cleaner according to any one of claims 1 to 3, wherein the seal body is a straight pipe body.

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