JP2020065636A - Suction port body for vacuum cleaner - Google Patents

Abstract

To provide a suction port body for a vacuum cleaner with improved cleaning performance.SOLUTION: A suction port body for a vacuum cleaner includes: a suction port body; a connection pipe part directly connected or indirectly connected to a vacuum cleaner body; a joint part connecting the suction port body and the connection pipe part; and a ventilation passage communicating the suction port body, the joint part and the connection pipe part. The joint part is connected to the suction port body vertically slidably around a first shaft center in the horizontal direction with respect to an advancing direction of the suction port body. The connection pipe part is connected to the joint part vertically slidably around a second shaft center in the horizontal direction. The suction port body has: a housing provided with a suction port from a front end part facing the advancing direction across to a bottom; a bumper provided at the housing, vertically slidably around a third shaft center extending in the horizontal direction in the way that the front end part side of the suction port is opened/closed; and an interlock mechanism part sliding the bumper interlocking with sliding operation of the joint part.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a suction port body of an electric vacuum cleaner.

  As a suction port body of a conventional vacuum cleaner including a suction port main body having a suction port at a bottom portion, and a connection pipe part that is swingably connected to the suction port main body in a vertical direction about a horizontal axis, Patent Documents 1 to 3 propose a suction port body that can adjust the degree of dust intake into the suction port by swinging the connection pipe portion in the vertical direction.

  In the case of the suction port body (floor nozzle for electric vacuum cleaner) of Patent Document 1, a vertically movable protrusion is provided in front of the suction groove at the bottom of the floor nozzle body, and a spring for urging the protrusion downward is provided. When the connection pipe swingably connected to the floor nozzle main body is swung downward, the connecting plate provided in the floor nozzle main body swings around the fulcrum, and the projection is formed at the tip of the connecting plate. It is configured to be pushed upwards so that a little larger dust in front of the floor nozzle body can be taken into the suction groove.

  In the case of the suction port body of Patent Document 2, an opening is provided in front of the suction port at the bottom of the suction port body, a shutter is swingably provided in the opening, and the rotation is swingably connected to the suction port body. When the pipe is swung upward, the interlocking mechanism (gear and timing belt) provided inside the suction port body causes the shutter to swing toward the suction port side to reduce the opening area of the suction port, thereby reducing the vacuum in the suction port. Configured to increase the degree.

Japanese Unexamined Patent Publication No. 64-6774 Japanese Patent Laid-Open No. 4-197223

  The suction port body of Patent Document 1 is a single-axis swing type in which the connection pipe swings vertically only around the horizontal axis of the rotary pipe, and therefore the connection pipe is lowered when the protrusion is opened. It is necessary to lower it to the position, which causes the user to take a posture of bending his waist, which is not a preferable usability. The same applies to the suction port body of Patent Document 2.

  The present invention has been made in view of such problems, and an object thereof is to provide a suction port body of an electric vacuum cleaner having improved cleaning performance.

According to the present invention, a suction port body, a connection pipe portion having one end directly or indirectly connected to the cleaner body, a joint portion connecting the suction port body and the other end of the connection pipe portion, An air passage that connects the suction port body, the joint portion, and the connection pipe portion to each other,
The joint portion is connected to the suction port body so as to be swingable in the vertical direction about a first axial center in the left-right direction with respect to the traveling direction of the suction port body,
The connection pipe portion is connected to the joint portion so as to be swingable in the vertical direction about the second axial center in the horizontal direction,
The suction port main body extends in the left-right direction in the casing so as to open and close the casing in which the suction port is provided from the front end portion facing the forward direction to the bottom portion, and the front end portion side of the suction port. A suction port body of an electric vacuum cleaner having a bumper provided so as to be vertically swingable about a third axis and an interlocking mechanism unit that swings the bumper in conjunction with swinging motion of the joint unit. Will be provided.

  In the suction port body of the electric vacuum cleaner of the present invention, the joint portion is vertically swingable about the first axis, and the connecting tube portion is vertically swingable about the second axis. It is a two-axis swing type. Therefore, it is possible to lower the joint portion to a lower position and raise the connecting pipe portion to a higher position, and in this state, raise the bumper via the interlocking mechanism portion to open the front end side of the suction port. . Therefore, the user can open and clean the front end portion side of the suction port even when standing upright, which improves the usability of the suction port body.

It is a perspective view showing an electric vacuum cleaner provided with a suction mouth object (first embodiment) of the present invention. It is the perspective view seen from the upper part of the suction mouth of Embodiment 1. It is a front view of the suction inlet of Embodiment 1. It is the perspective view seen from the lower part of the suction mouth of embodiment 1. (A) is a right side view of the suction port body of the first embodiment with the bumper opened, (B) is a sectional view taken along the line I-I of FIG. 3, and (C) is a sectional view taken along the line II-II of FIG. 3. It is a figure. (A) is a right side view of the suction port body of the first embodiment in which the bumper is closed, and (B) is a right side sectional view. (A) is another right side view of the suction port body of the first embodiment in which the bumper is opened, and (B) is another right side sectional view. (A) is a right side sectional view showing a state in which the bumper is opened by the interlocking mechanism portion of the suction port body of the first embodiment, and (B) is a right side sectional view showing a state in which the bumper is closed by the interlocking mechanism portion. It is a figure explaining the state at the time of floor surface cleaning by the suction inlet of Embodiment 1. It is a figure explaining another state at the time of cleaning the floor by the suction mouth of Embodiment 1. (A) of the suction inlet of Embodiment 2 is a right side sectional view showing a state in which the bumper is opened by the interlocking mechanism section, and (B) is a right side sectional view showing the state in which the bumper is closed by the interlocking mechanism section.

(Embodiment 1)
FIG. 1 is a perspective view showing an electric vacuum cleaner provided with a suction port body (Embodiment 1) of the present invention. In the embodiments described below, the case where the suction port body of the present invention is used in a canister-type vacuum cleaner is illustrated, but the suction port body of the present invention may be used in a stick-type vacuum cleaner. .

  This canister-type electric vacuum cleaner A has a cleaner body 1 having a built-in electric blower and a detachable dust collecting portion 1a, a suction port body 3, and the suction port body 3 and the cleaner body 1 are connected to each other. The suction hose 2 is provided.

  In the case of the first embodiment, the suction hose 2 includes a flexible hose portion 21a having one end connected to the cleaner body 1, an operation switch portion 21b connected to the other end of the flexible hose portion 21a, and an operation switch portion. A hose body 21 (hand pipe) having a handle 21c provided on 21b and an extension pipe 22 connecting the hose body 21 and the suction port body 3 are provided.

  Hereinafter, the suction port body 3 according to the present invention will be mainly described.

<Overall structure of suction port>
2 is a perspective view of the suction port body according to the first embodiment as viewed from above, FIG. 3 is a front view of the suction port body according to the first embodiment, and FIG. 4 is viewed from below as the suction port body according to the first embodiment. FIG. Further, FIG. 5A is a right side view of the suction port body of the first embodiment in which the bumper is opened, FIG. 5B is a sectional view taken along the line II of FIG. 3, and FIG. 5C is II-II of FIG. FIG. 6A is a right side view of the suction port body of the first embodiment with the bumper closed, and FIG. 6B is a right side sectional view. Further, FIG. 7A is another right side view of the suction port body of the first embodiment in which the bumper is opened, and FIG. 7B is another right side sectional view. 8A is a right side sectional view showing a state where the bumper is opened by the interlocking mechanism portion of the suction port body of the first embodiment, and FIG. 8B is a right side sectional view showing a state where the bumper is closed by the interlocking mechanism portion. is there. Note that, in FIG. 2, the front, rear, left, right, up, and down directions of the suction port body are indicated by arrows.

  The suction port body 3 has a T shape as a whole, and has a suction port body 31 having a suction port 31aa, a connection pipe portion 33 connected to the extension pipe 22 of the suction hose 2, a suction port body 31, and a connection pipe. A joint portion 32 that connects the portion 33, and a ventilation path that connects the suction port body, the joint portion, and the connection pipe portion are provided.

  The suction port main body 31 is provided on the left and right sides of the casing 31a so as to cover the casing 31a provided with the suction port 31aa extending from the front end facing the forward direction to the bottom and the suction port 31aa on the front end side of the casing 31a. Directional axis P3 (hereinafter, referred to as "third axis P3") as a center, and a bumper 31b provided so as to be vertically swingable, and the bumper 31b is swingable in conjunction with the swinging motion of the joint portion 32. And an interlocking mechanism portion 31c (see FIG. 8). Note that the interlocking mechanism portion 31c is omitted in FIGS. 5B, 6B, and 7B.

  Here, the “front end portion facing the forward direction” of the housing 31a means a portion of the housing 31a that faces a bumper body 31ba described later. More specifically, a notch-shaped suction port 31aa is provided from the lower portion of the front end portion of the housing 31a facing the bumper body 31ba, excluding the left and right ends, to the bottom portion. That is, the suction port 31aa opens forward and downward. Hereinafter, the front opening portion of the suction port 31aa may be referred to as a “front portion of the suction port 31aa”.

  The bumper 31b has a bumper body, 31ba, a right handle portion 31bb and a left handle portion extending rearward from both ends of the bumper body 31ab, and shaft portions (not shown) provided in the right handle portion 31bb and the left handle portion, respectively. Each shaft portion is rotatably inserted into a hole provided at the position of the third axis P3 on the left and right side surfaces of the housing 31a.

  Further, the suction port main body 31 includes a rotating brush 31d rotatably provided in the suction port 31aa, a motor (not shown), and a rotating force including a timing belt and a pulley for transmitting the rotating force of the motor to the rotating brush 31d. A transmission mechanism (not shown), a rear roller 31e provided on a receiving plate portion 31ab protruding to the rear of the housing 31a, a switch device including a switching roller 31f provided on the right rear portion of the housing 31a, and the housing 31a is provided with a pair of front rollers 31g provided at the left and right ends, and when the suction port main body 31 is lifted from the floor surface, the switching roller 31f projects downward and is switched from ON to OFF, thereby driving the motor. Is configured to stop.

The lead wire of the motor passes through the inside of the suction port body 31, the joint portion 32, and the connection pipe portion 33, and is electrically connected to a pair of connection terminals (not shown) provided to project to the rear end side of the connection pipe portion 33. Has been done.
The rotating brush 31d has a shaft body having a plurality of spiral grooves and brush bristles planted in each spiral groove of the shaft body, and both ends of the shaft body are rotatable by bearing portions (not shown) of the housing 31a. Held in. 3 to 8, the brush bristles of the rotary brush 31d are not shown.

  As shown in FIG. 5, the joint portion 32 is connected to the suction port main body 31 so as to be swingable in the vertical direction (direction of arrow R in FIG. 5C) about the first axial center P1 in the left-right direction. It has a tubular portion 32a and a second tubular portion 32b that is rotatably connected to the rear portion of the first tubular portion 32a about an axial center P4 in the front-rear direction (hereinafter referred to as "fourth axial center P4"), The second tubular portion 32b holds the front end of the connection pipe portion 33 swingably in the up-down direction (direction of arrow Q in FIG. 5A) about the second axial center P2 in the left-right direction.

The first tubular portion 32a has a pair of shaft portions 32aa on its left and right side surfaces, and the pair of shaft portions 32aa are provided at a position of the first axial center P1 in the housing 31a (a pair of boss portions (not shown). It is rotatably inserted in the drawing).
In addition, concave curved surface portions 31ac and 31ad capable of sliding contact with front ends 32ab and 32ac of the first cylindrical portion 32a that swings about the first axis P1 are provided in the housing 31a.

The connection pipe part 33 has a connection pipe body 33a and a cover member 33b that covers a part of the connection pipe body 33a, and the front end opening of the connection pipe body 33a is enlarged like a trumpet.
The front end of the connecting pipe portion 33 can swing in the up-down direction (direction of arrow Q in FIG. 5A) about the second axis P2 in the second tubular portion 32b of the joint portion 32. Is connected to the second cylindrical portion 32b.
Further, a convex curved surface portion 33ba is provided at the front end of the cover member 33b, and the convex curved surface portion 33ba is slidably in contact with the notch portion 32ba in the upper portion of the second tubular portion 32b.
Further, a concave curved surface portion 32bb is provided in the lower portion inside the second tubular portion 32b, and the front end 33aa of the connection pipe body 33a is slidably contacted with the concave curved surface portion 32bb.

The suction port body 3 configured as described above has a structure in which the suction port body 31, the joint portion 32, and the connection pipe portion 33 communicate with each other.
Further, according to the suction port body 3, the joint portion 32 with respect to the suction port body 31 is centered on the first axis P1 and is, for example, 0 ° (lowermost position, see FIG. 5) to about 30 ° (uppermost position). Position, see FIG. 6), and the connecting pipe portion 33 is, for example, 5 ° (lowermost position, see FIG. 5) to about about the second axis P2 with respect to the joint portion 32. It can swing within a range of 65 ° (uppermost position, see FIG. 7).
Therefore, the connecting pipe part 33 can swing up to about 95 ° with respect to the suction port body 31.
The connection pipe portion 33 may be configured such that the lowest position is 0 ° with the second axis P2 as the center with respect to the joint portion 32. Further, the swing angle range of the joint portion 32 centered on the first axis P1 and the swing angle range of the connection pipe portion 33 centered on the second axis P2 are examples, and the swing angle range is It is not limited to this and can be set freely.

<About the interlocking mechanism>
As shown in FIGS. 8A and 8B, in the interlocking mechanism portion 31c, when the joint portion 32 swings upward about the first axis P1, the bumper 31b swings downward, and When the joint 32 swings downward about the axis P1, the bumper 31b swings upward.
In the case of the first embodiment, the interlocking mechanism portion 31c includes the fastening portions 31ca and 31cb provided in the joint portion 32 and the bumper 31b, and the wire rods fastened to the fastening portions 31ca and 31cb of the joint portion 32 and the bumper 31b, respectively. 31 cc. In this case, a through hole 31af through which the wire rod 31cc is inserted is provided at the front end of the housing 31a of the suction port body 31.

The fastening portion 31ca of the joint portion 32 is, for example, a hook provided at the front end 32ab of the first tubular portion 32a.
The fastening portion 31cb of the bumper 31b is, for example, a hole provided in the intermediate portion in the longitudinal direction of the bumper 31b.
As the wire rod 31cc, for example, a flexible and / or stretchable string or tension coil spring made of a fiber material such as metal, resin, or rubber can be used.

According to the interlocking mechanism portion 31c configured in this manner, as shown in FIG. 8A, when the joint portion 32 swings downward about the first axis P1, the first tubular portion of the joint portion 32 is swung downward. The fastening portion 31ca provided at the front end 32ab of the portion 32a moves rearward. As a result, the fastening portion 31cb on the bumper 31b side is pulled rearward together with the wire rod 31cc, so that the bumper 31b swings upward about the third axis P3 (see FIG. 5A).
When the bumper 31b swings upward, the front portion of the suction port 31aa of the suction port body 31 opens, so that the air volume at the suction port 31aa increases and the front portion of the suction port 31aa cannot be taken in. Even a relatively large dust D can be taken into the suction port 31aa.

Further, as shown in FIG. 8B, when the joint portion 32 swings upward about the first axis P1, the fastening portion 31ca on the joint portion 32 side moves forward. As a result, the fastening portion 31cb on the bumper 31b side is not pulled by the wire rod 31cc, and the bumper 31b swings downward due to its own weight about the third axis P3 (see FIG. 6A). At this time, even if the stroke of the fastening part 31ca on the joint part 32 side is large, the fastening part on the bumper 31b side is fastened by allowing the flexible wire rod 31cc to have a sufficient length or by using the elastic wire rod 31cc. The stroke of 31cb can be suppressed small.
Since the front part of the suction port 31aa is closed by swinging the bumper 31b downward, the suction force becomes larger than when the front part of the suction port 31aa is opened.

  Further, since the wire rod 31cc of the interlocking mechanism portion 31c is passed through the through hole 31af provided at the front end of the housing 31a of the suction inlet main body 31 so as not to be exposed to the outside, the appearance of the suction inlet body 3 is impaired in design. It is possible to prevent the wire rod 31cc from hitting an object and cutting it.

<Operation of the suction inlet during cleaning>
9: is a figure explaining the state at the time of floor cleaning at the suction inlet of Embodiment 1, FIG. 10: is a figure explaining another state at the time of floor cleaning at the inlet of Embodiment 1. FIG. is there.
As shown in FIG. 9, when the electric vacuum cleaner A (see FIG. 1) provided with the suction port body 3 of the present invention is used to clean, for example, under a sofa S having a narrow space in the height direction, the user Lowers the extension pipe 22 so as to lie down (decreases the inclination angle θ of the extension pipe 22 with respect to the floor surface F) and advances the suction port body 3 below the sofa S. At this time, as described with reference to FIG. 8A, the joint 32 of the suction port body 3 is lowered and the bumper 31b is raised (the front part of the suction port 31aa is open). Not only the dust but also the relatively large dust D can be sucked and removed by the suction port body 3 with a large air volume.

  Further, when the suction port body 3 is retracted from under the sofa S, the user raises the extension pipe 22 (increases the inclination angle θ of the extension pipe 22 with respect to the floor surface F), which will be described with reference to FIG. As described above, the joint portion 32 of the suction port body 3 goes up and the bumper 31b goes down (the front part of the suction port 31aa is closed). Therefore, the suction port body 3 can be retracted while sucking dust with a strong suction force from under the sofa S.

  Also, when cleaning the floor surface F (including the carpet) other than under the sofa S, the user shakes the arm having the handle 21c (see FIG. 1) in the front-rear direction, and the suction port is drawn from the extension pipe 22. The range over the joint 32 of the body 3 swings in the vertical direction. Therefore, when moving forward, the suction port body 3 raises the bumper 31b (by opening the front part of the suction port 31aa) to suck in a relatively large amount of dust D, and when moving backward, lower the bumper 31b. The suction force is increased (by closing the front portion of the suction port 31aa).

  Further, when cleaning the carpet, the bumper 31b is raised and the front part of the suction port 31aa is opened when the suction port body 3 is advanced, so that a relatively large dust D can be sucked and the cleaning performance is improved. In addition, the suction of the suction port body 3 on the carpet is suppressed, and the operability of the handle 21c is improved. Further, when the suction port body 3 is retracted, the bumper 31b is lowered (the front part of the suction port 31aa is closed) to increase the suction force, so that the dust behind the fibers of the carpet is also suctioned and removed by the strong suction force. be able to. In addition, the synergistic effect of the strong suction force and the rotating brush 31d can be obtained.

Further, as shown in FIGS. 7A and 10, according to the suction port body 3 of the present invention, the connecting pipe portion 33 swings vertically with respect to the joint portion 32 about the second axis P2. Therefore, the extension pipe 22 is raised to the uppermost position with respect to the joint portion 32 while the joint portion 32 is lowered to the lowermost position, and the bumper 31b is raised (the front portion of the suction port 31aa is opened). )be able to.
Therefore, the user U lowers the arm having the handle 21c to bring the suction port body 3 closer to his / her feet, and walks in this state to raise the bumper 31b (the front portion of the suction port 31aa is opened). The floor surface F can be cleaned while advancing 3. Therefore, when a large number of relatively large dusts D are present on the floor surface F, the user does not have to take a posture to bend his / her waist (a burden on his / her waist) and to efficiently stand and stand. Can be cleaned.
In other words, as in the above-mentioned Patent Documents 1 and 2, in the case of the uniaxial swing type suction port body, it is necessary to lower the connecting pipe to a lower position in order to open the front part of the suction port, so that the user has a burden on the waist. It was forced to take such a bent posture, and the usability was not good for the user.
Since the suction port body 3 of the present invention is configured as a biaxial swing type, it solves the problems of the prior art and improves the usability.

Further, since the suction port body of Patent Document 1 has a structure in which the amount of upward movement of the protrusion cannot be sufficiently increased, it is larger than the clearance between the raised lower end surface and the floor surface. Needless to say, dust larger than the gap between the front end of the floor nozzle main body and the floor surface is not sucked in, and the front end of the floor continues to be pushed forward. Further, in the suction port body of Patent Document 2, an opening is provided in front of the suction port of the suction port body, but since the opening does not open in the swing range of the shutter, the opening does not contact the shutter and the floor surface. The dust that is larger than the gap between them is not sucked in and is continuously pushed forward by the suction port body.
Even with respect to such a problem of the conventional art, when the suction mouth body 3 of the present invention moves forward, the bumper 31b rises and the front part of the suction mouth 31aa opens, so that relatively large dust is absorbed by the bumper 31b. You can surely inhale without pushing.

Further, the suction port bodies of Patent Documents 1 and 2 have a structure in which it is difficult to suck dust near the wall because the suction port is not formed up to the front end portion facing the forward direction.
On the other hand, since the suction port body 3 of the present invention is provided with the suction port 31aa extending from the front end portion facing the forward direction to the bottom portion, the suction port 31aa is opened and the dust on the wall is effectively suctioned and removed. can do.
Further, according to the suction port body 3 of the present invention, when the front portion of the suction port 31aa is opened, the operability is also lightened, so that both the cleaning performance in the forward direction and the operability (usability) are improved at the same time. . Further, since the front part of the suction port 31aa is closed by swinging the bumper 31b downward, the suction force becomes strong, and it is particularly effective for suctioning and removing dust inside the fibers of the carpet.

  Further, according to the suction mouth body 3 of the present invention, since the joint portion 32 can be raised and lowered to change the suction force and the air volume at the suction mouth 31aa as described above, the operation of the user shaking the arm back and forth. Besides, the joint 32 can be raised at any place to increase the suction force, or the joint 32 can be lowered to increase the air volume.

  When cleaning the handle 21c to the left, the suction port body 3 turns to the left, and to twist the handle 21c to the right, the suction port body 3 turns to the right direction during cleaning. Also when the joint 3 is turned, if the joint portion 32 swings upward or downward, the bumper 31b interlocks with it and swings downward or upward.

(Embodiment 2)
11A is a right side sectional view showing a state in which the bumper is opened by the interlocking mechanism section, and FIG. 11B is a right side sectional view showing the state in which the bumper is closed by the interlocking mechanism section. . 11A and 11B, the same elements as those in FIGS. 8A and 8B are denoted by the same reference numerals.
The suction port body 103 according to the second embodiment is different from the suction port body according to the first embodiment in that the suction port body 103 according to the second exemplary embodiment further includes a biasing member 34 that biases the joint portion 32 to swing upward about the first axis P1. The configuration is substantially the same as 3. Hereinafter, differences between the second embodiment and the first embodiment will be mainly described.

  In the suction port body 103 of the second embodiment, the compression coil spring as the biasing member 34 is provided between the receiving plate portion 31ab provided at the rear portion of the suction port body 31 and the second tubular portion 32b of the joint portion 32. ing. In this case, the lower end of the biasing member 34 is fixed to the receiving plate portion 31ab, and the upper end of the biasing member 34 can contact the second tubular portion 32b, but is not fixed to the second tubular portion 32b.

According to this configuration, when the user shakes the arm having the handle 21c (see FIG. 1) back and forth to clean the floor surface, the user swings the arm forward to connect the extension pipe 22 and the suction port body 3 to each other. Since the inclination angle θ (see FIG. 9) of the portion 33 becomes small, the joint portion 32 swings downward and the biasing member 34 is compressed as shown in FIG. 11 (A). At this time, the bumper 31b is raised and the front portion of the suction port 31aa is open.
Further, since the inclination angle θ (see FIG. 9) of the extension pipe 22 and the connection pipe portion 33 of the suction port body 3 is increased by swinging the arm backward, the joint portion 32 moves upward as shown in FIG. 11 (B). The urging member 34 swings to extend. At this time, the bumper 31b is lowered and the front portion of the suction port 31aa is closed.

  When the joint portion 32 swings upward, the upward biasing force of the biasing member 34 is applied to the joint portion 32. Therefore, when the user retracts the suction port body 103 from the front position, the biasing member is pushed. The joint portion 32 can swing upward at an earlier stage than when there is no 34. That is, the joint portion 32 is easily moved up by the biasing member 34, and the bumper 31b is easily moved down.

Therefore, when the user returns the arm having the handle 21c from the front to the rear during cleaning, the bumper 31b is lowered to the lowest position from the early stage of the stroke for moving the arm backward, thereby closing the front part of the suction port 31aa. The time during which the suction force is increased can be increased.
Note that the urging force (spring pressure) of the urging member 34 should be set to such a force that the joint portion 32 easily rises and the bumper 31b easily falls when the floor surface F is a floor. You can

(Embodiment 3)
In the second embodiment, the case where the compression coil spring is used as the urging member 34 is illustrated, but the urging member 34 is not limited to the compression coil spring, and a leaf spring, an elastic foam, a torsion spring, or the like may be used.
When the urging member 34 is a leaf spring or an elastic foam body, it can be arranged between the receiving plate portion 31ab of the suction port body 31 and the joint portion 32, similarly to the compression coil spring.
When the urging member 34 is a torsion spring, a ring portion of the torsion spring is attached to at least one shaft portion 32aa (see FIG. 5C) of the joint portion 32, and one end and the other end of the torsion spring are attached to the suction port body 31. Can be hooked and fixed to part of the joint part and part of the joint part 32.

(Other embodiments)
1. In the first and second embodiments, the case where the joint part 32 and the bumper 31b are interlocked with each other by the interlocking mechanism part 31c using the wire rod 31cc has been exemplified, but the interlocking mechanism part is not limited to this, and for example, the joint part 32 may be used. When the shaft portion 32aa of the first axial center P1 rotates, the bumper 31b may be configured to swing about the third axial center P3 by a combination of a plurality of gears or a combination of a plurality of pulleys and a belt. Good.

2. The suction port body 3 of the first embodiment may be provided with a spring that urges the bumper 31b in the upward direction. Further, in this case, when the joint portion 32 rises, the interlocking mechanism portion lowers the bumper 31b against the biasing force of the spring, and when the bumper 31b rises, the spring biasing force lowers the joint portion via the interlocking mechanism portion. It may be configured to be transmitted to.

3. Although the first and second embodiments exemplify the case where the rotary brush 31d is rotatable by the motor, the rotary brush may be rotated by the driving force of the turbine rotated by the air flow.
Further, the suction mouth of the present invention may be one in which the rotary brush is omitted.

4. In the first and second embodiments, the joint portion 32 is configured such that the first tubular portion 32a and the second tubular portion 32b are rotatably connected to each other about the fourth axial center P4 in the front-rear direction, that is, the handle is moved in the left-right direction. Although the suction port bodies 3 and 103 that can be turned in the left-right direction by the twisting operation have been exemplified, the present invention integrates the first tubular portion 32a and the second tubular portion 32b of the joint portion 32 to operate the handle. It may be a suction port body that does not change its direction in the left-right direction.

5. Although the first and second embodiments exemplify the case where the suction port body of the present invention is applied to a canister-type electric vacuum cleaner, the suction port body of the present invention sucks the vacuum cleaner body having a handle through an extension pipe. It is also possible to apply to a stick type vacuum cleaner having a mouth unit connected.

(Summary)
The suction port body of the electric vacuum cleaner of the present invention includes a suction port body, a connecting pipe portion having one end directly or indirectly connected to the cleaner body, and the suction port body and the other end of the connection pipe portion. A joint part to be connected, an air passage for communicating the suction port body, the joint part and the connection pipe part,
The joint portion is connected to the suction port body so as to be swingable in the vertical direction about a first axial center in the left-right direction with respect to the traveling direction of the suction port body,
The connection pipe portion is connected to the joint portion so as to be swingable in the vertical direction about the second axial center in the horizontal direction,
The suction port main body extends in the left-right direction in the casing so as to open and close the casing in which the suction port is provided from the front end portion facing the forward direction to the bottom portion, and the front end portion side of the suction port. The bumper is provided so as to be swingable in the vertical direction about the third axis, and the interlocking mechanism portion that swings the bumper in conjunction with the swinging motion of the joint portion.

The suction port body of the electric vacuum cleaner of the present invention may be configured as follows and may be appropriately combined.
(1) In the interlocking mechanism section, when the joint section swings upward about the first axis, the bumper swings downward, and the joint section moves downward about the first axis. The bumper may be configured to swing upward when swung to.
According to this configuration, when cleaning the floor surface with the electric vacuum cleaner in which the suction port body is connected to the cleaner body via the extension pipe, the bumper opens during the cleaning operation of swinging the joint portion downward. The operability and the cleaning performance in the forward direction are improved, and the bumper is closed and the suction force is increased during the cleaning operation of swinging the joint part upward.

(2) The interlocking mechanism portion may include a fastening portion provided on each of the joint portion and the bumper, and a wire rod fastened to each of the fastening portions of the joint portion and the bumper. Good.
With this configuration, the interlocking mechanism section can be easily manufactured with a simple structure, and the interlocking mechanism section can be incorporated into the suction port body without making a major design change.

(3) It may further include a biasing member that biases the joint portion so as to swing upward about the first axis.
According to this configuration, the urging member can assist the upward swing of the joint portion that performs the opening operation of the bumper.

(4) The suction port body has a receiving plate portion that receives the joint portion,
The biasing member may be a compression coil spring provided between the receiving plate portion and the joint portion.
According to this structure, the biasing member (compression coil spring) having a simple structure can be easily provided in a narrow space.

(5) The joint portion includes a first tubular portion connected to the suction port body so as to be vertically swingable about the first axial center, and another connecting pipe portion connected to the first tubular portion. A second cylindrical portion that holds the end of the end portion in a vertically swingable manner about the second axis,
The second tubular portion may be rotatably connected to the first tubular portion about a fourth axial center in the front-rear direction.
According to this configuration, the user can turn the extension pipe left or right to turn the suction port body to the left or right by operating the handle, so the bumper is raised and the front part of the suction port is opened. In this state, cleaning can be performed while turning the suction port body left or right.

(6) The suction port body may further include a rotating brush rotatably provided at the suction port of the housing.
According to this configuration, when the bumper is in the open state, dust on the wall can be scraped off by the rotating brush and removed by suction, and when the suction force with the bumper closed is increased, the fibers of the carpet can be removed. Since the dust in the back can be scraped out by a rotating brush and removed by suction, the cleaning performance is further improved.

  It should be considered that the disclosed embodiments are illustrative in all points and not restrictive. The scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

1 Vacuum Cleaner Main Body 3, 103 Suction Port Body 22 Extension Tube 31 Suction Port Body 31a Housing 31aa Suction Port 31ab Receiving Plate Part 31b Bumper 31c Interlocking Mechanism Part 31ca, 31cb Fastening Part 31cc Wire Rod 31d Rotating Brush 32 Joint Part 32a First Tube Part 32b Second tubular part 33 Connection pipe part 34 Energizing member A Vacuum cleaner P1 First axis P2 Second axis P3 Third axis

Claims (7)

A suction port body, a connecting pipe portion having one end directly or indirectly connected to the cleaner body, a joint portion connecting the suction port body and the other end of the connection pipe portion, the suction port body and the An air passage that connects the joint portion and the connection pipe portion is provided,
The joint portion is connected to the suction port body so as to be swingable in the vertical direction about a first axial center in the left-right direction with respect to the traveling direction of the suction port body,
The connection pipe portion is connected to the joint portion so as to be swingable in the vertical direction about the second axial center in the horizontal direction,
The suction port main body extends in the left-right direction in the casing so as to open and close the casing in which the suction port is provided from the front end portion facing the forward direction to the bottom portion, and the front end portion side of the suction port. An electric cleaning characterized by having a bumper provided so as to be vertically swingable about a third axis and an interlocking mechanism section for swinging the bumper in conjunction with swinging operation of the joint section. The suction body of the machine.   In the interlocking mechanism section, when the joint section swings upward about the first axis, the bumper swings downward, and the joint section swings downward about the first axis. The suction port body according to claim 1, wherein the bumper is configured to swing upward.   The suction port according to claim 2, wherein the interlocking mechanism section includes a fastening section provided in each of the joint section and the bumper, and a wire rod fastened to each of the fastening sections of the joint section and the bumper. body.   The suction port body according to any one of claims 1 to 3, further comprising a biasing member that biases the joint portion to swing upward about the first axis. The suction port body has a receiving plate portion that receives the joint portion,
The suction opening body according to claim 4, wherein the urging member is a compression coil spring provided between the receiving plate portion and the joint portion. The joint part is connected to the suction port body so as to be vertically swingable about the first axis, and the joint part is connected to the first cylinder part, and the other end of the connection pipe part is connected to the joint part. A second tubular portion that holds the second tubular portion so as to be vertically swingable about the second axis,
The suction port body according to any one of claims 1 to 5, wherein the second tubular portion is rotatably connected to the first tubular portion about a fourth axial center in the front-rear direction.   The suction port body according to any one of claims 1 to 6, wherein the suction port body further includes a rotating brush rotatably provided at the suction port of the housing.

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