JP2006326127A - Suction port body of vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a suction port body of a vacuum cleaner facilitating connection to the vacuum cleaner. <P>SOLUTION: The suction port body 20 includes a connection pipe 22 fixed to a suction port main body 21 with the suction port 26 for sucking dust, communicating with a suction port 26 and connected to an extension pipe (communication pipe) 14 of the vacuum cleaner 10. The pipe 22 is pivoted swingably breadthwise about a first rotary axis A vertically intersecting a longitudinal direction of the main body 21 and vertically swingably pivoted on a second rotary axis B vertically intersecting the first axis A. The main body 21 is provided with a torsion spring 90 for retaining the connection pipe 22 in a standing state at being disconnected from the extension pipe 14, a lower side spring retaining part 69A, an upper side spring retaining part 69B (vertically energizing means), an engagement member 40, a coil spring 41 and a gear part 42 (breadthwise energizing means). <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention is supported so as to be rotatable about a first rotation axis orthogonal to the longitudinal direction of the suction port body, and is rotatable about a second rotation axis orthogonal to the first rotation axis. The present invention relates to a suction port body of a vacuum cleaner provided with a supported connection pipe.

As a conventional suction port body, a connection pipe connected to a vacuum cleaner with respect to the suction port body is known to be freely rotatable in the vertical direction and the horizontal direction (for example, Patent Document 1). reference).
JP-A-11-206654

  However, in the above-described suction port body, when the connection pipe of the suction port body and the vacuum cleaner are separated from each other, the connection pipe rotates downward due to its own weight and also rotates in either the left-right direction. It had fallen down.

  Therefore, in order to connect the suction port to the vacuum cleaner, there has been a problem that the user has to connect to the vacuum cleaner while supporting the connection pipe at an angle at which the user can easily connect to the vacuum cleaner.

  Then, this invention makes it the subject to provide the suction inlet body of the vacuum cleaner which can be easily connected to a vacuum cleaner.

  In order to solve the above-described problems, the present invention is provided with a connection pipe that is connected to a communication pipe of an electric vacuum cleaner and connected to the suction port body to a suction port body having a suction port for sucking dust. Is supported so as to be pivotable in the left-right direction around a first rotation axis that is orthogonal to the longitudinal direction of the inlet body, and a second rotation axis that is orthogonal to the first rotation axis A suction port body of a vacuum cleaner that is supported so as to be pivotable in the vertical direction, wherein the suction port body holds the connection pipe spaced apart from the communication pipe in an upright state. And a right-and-left biasing means.

  According to the suction port body of the vacuum cleaner of the present invention, the connection pipe separated from the communication pipe can be held upright by the vertical direction biasing means and the horizontal direction biasing means.

  Thereby, when connecting a connection pipe and a communication pipe, it becomes unnecessary to support a connection pipe in the direction which is easy to connect, and it can connect to a vacuum cleaner easily.

  Next, a suction port body of a vacuum cleaner of the best mode for carrying out the present invention will be described based on the drawings.

  The vacuum cleaner 10 shown in FIG. 1 includes a vacuum cleaner main body 11, a dust collection hose 12 having one end detachably connected to a hose connection port 11a formed at a front portion of the vacuum cleaner main body 11, and the dust collection An extension pipe 14 is provided as a communication pipe that is detachably connected to a hand operation pipe 13 at the other end of the hose 12. Further, a dust collection bag 15 communicating with the dust collection hose 12 and an electric blower 16 that applies a suction negative pressure to the dust collection bag 15 are provided inside the cleaner body 11. And the suction inlet 20 is connected to the front-end | tip part of the extension pipe 14 so that attachment or detachment is possible.

  As shown in FIG. 2, the suction port body 20 includes a suction port body 21 that extends long in the left-right direction with respect to the extension tube 14, and a connection tube 22 attached to the suction port body 21. By inserting and connecting the connection pipe 22 into the extension pipe 14, the suction port body 20 is connected to the extension pipe 14.

  Here, when the surface to be cleaned F such as a large floor surface is cleaned by holding the hand operation pipe 13, the Y-axis direction that is the longitudinal direction of the suction port body 21 is orthogonal to the axial direction X of the extension pipe 14. Directed so that.

  As shown in FIG. 3, the suction port main body 21 has a lower case 23 positioned on the lower side and an upper case 24 assembled above the lower case 23.

  The front portions of the lower case 23 and the upper case 24 are coupled by holes and hooks (not shown), and the rear portions of the lower case 23 constitute a part of the upper case 24 and hold the connection tube 22 in a freely rotatable manner. Combined by the rear cover 30. A suction port chamber 25 is formed inside the lower case 23 and the upper case 24.

  The suction port chamber 25 is opened toward the surface F to be cleaned by a suction port 26 formed in the lower case 23. Inside the suction port chamber 25, there is disposed a rotary cleaning body 27 in which a plurality of blades 27a are formed in a spiral shape on the peripheral surface.

  The rotary cleaning body 27 extends along the longitudinal direction (Y-axis direction) of the suction port body 20 shown in FIG. 2, and a pair of bearing recesses 23a (see FIG. 4) whose left and right ends are formed in the lower case 23. ) And a pair of bearing recesses (not shown) formed in the upper case 24. The rotary cleaning body 27 is provided at a position facing the suction port 26.

  A pair of front wheels 28a, 28a (see FIG. 2) is rotatably held at the front edge of the lower case 23, and a vertical wall that supports the front end opening of the cylindrical portion 31 of the rear cover 30 at the rear. A portion 23b (see FIG. 4) is projected. The upper edge portion of the vertical wall portion 23 b has a circular concave shape that is continuous with the inner wall of the cylindrical portion 31 of the rear cover 30, and allows the airflow sucked into the suction port chamber 25 to pass therethrough.

  Further, a meshing member 40 is provided behind the rear wall portion 23b. The meshing member 40 extends along the Y-axis direction and has a large number of teeth 40a protruding upward as shown in FIG. In addition, coil springs 41 and 41 are attached to both end portions of the engagement member 40, respectively, and are urged by the coil springs 41 and 41 so as to be positioned approximately at the center in the left-right direction of the lower case 23.

  Then, as shown in FIG. 4, a pair of wheel support portions 29a and 29a project from the rear edge portion of the lower case 23, and a rear wheel 29b (FIG. 3) is interposed between the pair of wheel support portions 29a and 29a. Is supported rotatably. 29c is a connection reinforcement board which connects a pair of wheel support parts 29a and 29a.

  The center of rotation of the rear wheel 29b is set behind the center of a rotation shaft 51 of a connecting portion 50, which will be described later, provided at the tip of the connection tube 22, and the surface to be cleaned is located below the connection tube 22. When tilted to the F side, the front portion of the suction port main body 21 does not rise from the surface to be cleaned F.

  The front wheels 28a, 28a and the rear wheel 29b have a rotation axis parallel to the Y axis, and are rotatable in the front-rear direction of the suction port body 20. In addition, instead of the front wheels 28a, 28a and the rear wheel 29b, a suction caster 20 is provided by providing a caster that is rotatable around the vertical axis on the surface F to be cleaned, or by holding the ball rotatably. It may be movable freely in the X-axis and Y-axis directions.

  A bumper 21 a is sandwiched between the lower case 23 and the upper case 24. The bumper 21a covers the side portion and the front portion of the suction port body 20 from both sides of the pair of wheel support portions 29a and 29a located at the rear portion of the suction port body 20.

  As shown in FIG. 6A, the rear cover 30 includes a cylindrical portion 31, a rotating portion 32, a central cover portion 33, a pair of side cover portions 34 and 34, a rear vertical wall portion 35, and a pair of leg portions. Wall portions 36 and 36 and a bearing portion 60 are provided.

  The cylindrical portion 31 has a cylindrical shape with both ends opened, and a first rotation axis A (see FIG. 3) orthogonal to the Y-axis direction that is the longitudinal direction of the suction port body 21 passes through the center. . The front end portion of the cylindrical portion 31 is supported by the vertical wall portion 23 b of the lower case 23.

  The rotating part 32 has a cylindrical part 31 inserted and fitted inside, and can be rotated 360 ° relative to the first rotating axis A of the cylindrical part 31. A gear portion 42 is formed on the outer peripheral surface of the rear end portion of the rotating portion 32 as shown in FIG.

  The gear portion 42 is formed to protrude from the lower half of the outer peripheral surface of the rotating portion 32, and has a large number of teeth 42 a that mesh with the teeth 40 a of the meshing member 40.

  When the rotating part 32 rotates, the teeth 40a of the meshing member 40 and the teeth 42a of the gear part 42 mesh with each other so that the meshing member 40 moves in the left-right direction against the biasing force of the coil springs 41 and 41. It has become.

  Here, since the meshing member 40 is urged by the coil springs 41, 41 so as to be positioned at the substantially center in the left-right direction of the lower case 23, the meshing member 40 is separated when the connecting tube 22 and the extension tube 14 are separated from each other. And the gear portion 42 are engaged with each other, so that the rotating portion 32 is not rotated, and the connection pipe 22 is erected at the central portion in the left-right direction of the suction port main body 21.

  That is, the engaging member 40, the coil springs 41, 41, and the gear portion 42 constitute a left-right urging means that holds the connection pipe 22 in a standing state at the center in the left-right direction of the suction inlet body 21.

  The center cover portion 33 projects forward from the front portion of the cylindrical portion 31 and closes the rear portion of the upper case 24. Here, it has a partially cylindrical shape bulging upward in an arc shape.

  The pair of side cover parts 34, 34 extend from the center cover part 33 in the left-right direction, and are formed in an arc cross-sectional shape. The side cover portions 34, 34 are assembled integrally with the upper case 24 to define the rear portion of the suction port chamber 25.

  The rear vertical wall 35 extends integrally in the left-right direction from the lower part of the cylindrical part 31 and the lower parts of the side cover parts 34, 34, and defines the rear part of the suction port chamber 25.

  A pair of latching portions 35 a and 35 a extending in the left-right direction are formed at both ends of the rear vertical wall portion 35. Each latching portion 35a holds a pair of latching claw portions 24a and 24a slidably provided at both ends of the rear portion of the upper case 24.

  When the side cover portions 34 and 34 of the rear cover 30 are brought into contact with the rear inner wall of the upper case 24 and the latching claw portions 24a and 24a located on the outside are slid so as to be close to each other, the latching claw portion is obtained. 24a and 24a are inserted and held in the latching portions 35a and 35a, and the upper case 24 and the rear cover 30 are combined and integrated. Further, when the latching claw portions 24a and 24a are slid and moved apart from each other, the latching claw portions 24a and 24a are detached from the latching portions 35a and 35a so that the upper case 24 and the rear cover 30 can be separated. It has become.

  The pair of leg upper wall portions 36, 36 are formed to protrude rearward from the rear vertical wall portion 35. Each leg upper wall portion 36 is fixed to the wheel support portions 29a and 29a of the lower case 23 by wood screws or the like (not shown). Thereby, the lower case 23, the upper case 24, and the rear cover 30 are integrated.

  The bearing portion 60 includes a bearing lower portion 61 that integrally protrudes rearward from the rear end portion of the rotating portion 32, and a bearing upper portion 62 that covers the upper portion of the bearing lower portion 61.

  The bearing lower portion 61 includes a pair of lower connection chambers 64 and 64 defined by lower bearing plates 63a and 63b, and a bottom plate 61a that connects the lower connection chambers 64 and 64 to each other.

  The lower bearing plates 63a and 63b are formed with semicircular lower bearing recesses 67a and 67b, respectively. The lower bearing plate 63a has a lower spring holding portion 69A that protrudes into the lower connection chamber 64. The lower spring holding portion 69A is provided on the lower front side than the lower bearing recess 67a.

  Further, boss hole portions 64a projecting upward are formed in the lower connection chamber 64, respectively.

  And the upper surface of the bottom wall 61a is formed in the curved surface shape which dents in circular arc shape toward the downward direction, as shown in FIG.

  On the other hand, the bearing upper portion 62 has a pair of upper connection chambers 66 and 66 partitioned by upper bearing plates 65a and 65b, and a top plate 62a that connects these upper connection chambers 66 and 66.

  Semi-circular upper bearing recesses 68a and 68b are formed in the upper bearing plates 65a and 65b, respectively. An upper spring holding portion 69B that protrudes into one upper connection chamber 66 is formed on one upper bearing plate portion 65a. The upper spring holding portion 69B is provided on the rear upper side with respect to the upper bearing recess 68a.

  Further, bosses 66a projecting downward are formed inside the upper connection chamber 66, respectively.

  And the lower surface of the top plate 62a is formed in the curved surface shape which dents circularly toward upper direction, as shown in FIG.

  The bearing lower portion 61 and the bearing upper portion 62 are positioned by inserting the boss 66a into the boss hole portion 64a, and further fixed integrally by screwing a wood screw (not shown) into the boss 66a from below. .

  Further, here, the front edge portion 62 b of the bearing upper portion 62 meshes with a step portion 32 a formed at the rear end portion of the rotating portion 32. When the front edge portion 62b of the bearing upper portion 62 is in contact with the stepped portion 32a, the negative pressure in the suction port chamber 25 due to the entry of air from the outside is prevented.

  And the rear edge part 62c of the bearing upper part 62 is scooped out so that the connection pipe 22 can rotate upwards.

  Further, step portions 63c and 65c are formed at the upper end portions of the lower bearing plates 63a and 63b and the lower end portions of the upper bearing plates 65a and 65b, respectively, and the step portions 63c and 65c are in a state of being aligned with each other. By contact, the gap is closed at the joint between the lower bearing plates 63a and 63b and the upper bearing plates 65a and 65b.

  And the connection part 50 of the connection pipe 22 is stored in the bearing chamber 60a divided by the bottom plate 61a, the lower side bearing plates 63a and 63b, the upper side bearing plates 65a and 65b, and the top plate 62a.

  As shown in FIG. 6A, the connecting portion 50 includes a connecting portion main body 50a integrally formed at the distal end portion of the connecting pipe 22, and a pair of pivots protruding sideways from both end surfaces of the connecting portion main body 50a. It has a shaft 51 (the other is not shown).

  The connecting portion main body 50a has a substantially semi-cylindrical shape opened forward, and an upper end edge portion 52a and a lower end edge portion 52b protrude from the peripheral surface.

  The upper end edge 52a is in sliding contact with the top plate 62a formed in the curved surface shape of the bearing upper portion 62, and the lower end edge portion 52b is along the bottom plate 61a formed in the curved surface shape of the bearing lower portion 61. Make sliding contact.

  As shown in FIG. 3, a step 61b that restricts the movement of the lower edge 52b is formed at the rear end of the bottom plate 61a, and the movement of the upper edge 52a is restricted at the rear end of the top plate 62a. A stepped portion 62d is formed.

  Further, the left and right side walls of the connecting portion main body 50a are in sliding contact with the lower bearing plates 63a and 63b and the upper bearing plates 65a and 65b, so that the airtightness of the peripheral portion of the rotating portion 51 is ensured.

  Each of the pair of rotating shafts 51 (not shown) has a cylindrical shape, and a second rotating shaft B orthogonal to the first rotating shaft A passes through the center of the rotating shaft 51. (See FIG. 6A).

  Each rotation shaft 51 (the other not shown) is held between the lower bearing recesses 67a and 67b and the upper bearing recesses 68a and 68b and can be rotated around the second rotation shaft B. ing. Thereby, the connection part 50 can be rotated in the up-down direction around the second rotation axis B.

  Further, a torsion spring 90 is fitted to one rotation shaft 51.

  As shown in FIG. 6B, the torsion spring 90 has one end portion 90a extending downward and engaging the lower side of the lower spring holding portion 69A, and the other end portion. 90b extends upward and engages with the lower side of the upper spring holding portion 69B.

  Since the torsion spring 90 biases the connecting portion 50 in the direction indicated by the arrow M (see FIG. 6B), when the connecting tube 22 and the extension tube 14 are separated from each other, the connecting tube 22 It will be in a state of standing up.

  That is, the torsion spring 90, the lower spring holding portion 69A, and the upper spring holding portion 69B constitute a vertical direction urging means for holding the connection pipe 22 in an upright state.

  Further, the rotation part 32 is rotatable with respect to the first rotation axis A of the cylindrical part 31, and the rotation axis 51 is formed into the lower bearing recesses 67a and 67b and the upper bearing recesses 68a and 68b. Since it is held so as to be pivotable about the second pivot axis B, the connecting tube 22 is supported so as to be pivotable in the left-right direction around the first pivot axis A, and the first pivot axis. It is supported so as to be rotatable in the vertical direction around the second rotation axis B orthogonal to A.

  As shown in FIG. 3, the connection pipe 22 communicates with the suction port 26 through the suction port chamber 25, the cylindrical portion 31, the bearing chamber 60 a, and the connecting portion 50.

  Further, the connecting pipe 22 is bent so as to extend upward from the floor surface from the connecting portion 50 and then extends linearly, and a terminal cover 22a is attached to the linearly extending portion. The terminal cover 22a closes a terminal hole (not shown) when the extension pipe 14 is wired.

  In FIG. 3, reference numeral 100 denotes an intake hole for smoothly rotating the rotary cleaning body 27 opened at the front portion of the upper case 24, and 101 denotes a brush held on the lower surface of the lower case 23.

  Next, the operation of the suction port body of the electric vacuum cleaner of the present invention will be described.

  In order to use the vacuum cleaner 10, first, the suction port body 20 is inserted and connected to the tip of the extension pipe 14.

  At this time, since the torsion spring 90 is engaged with the lower spring holding portion 69A and the upper spring holding portion 69B, the connecting portion 50 is urged in the direction indicated by the arrow M (see FIG. 6B). The connection pipe 22 of the suction port body 20 is held in an upright state.

  Further, the gear portion 42 meshes with the meshing member 40 located at the center in the left-right direction of the suction port body 21 by the coil springs 41, 41, so that the rotation portion 32 is not rotated, and the connection of the suction port body 20 is performed. The tube 22 is held in a state where it is erected at the center in the left-right direction of the inlet body 21.

  Therefore, the connection pipe 22 can be self-supporting, and it is not necessary to support the connection pipe 22 in a direction in which the connection pipe 22 is easily connected when the connection pipe 22 is inserted and connected to the extension pipe 14. Thereby, the extension pipe 14 and the connection pipe 22 can be easily connected.

  And if the suction inlet 20 is connected to the extension pipe 14, the switch 13a provided in the hand operation pipe 13 will be turned on, and the electric blower 16 will be driven. When the electric blower 16 is driven, a suction negative pressure is generated, and the suction negative pressure acts in the suction port body 20 through the dust collection bag 15, the dust collection hose 12, the hand operation pipe 13, and the extension pipe 14 in this order.

  And the dust and air on the to-be-cleaned surface F are suck | inhaled from the suction inlet 26 formed in the suction inlet body 20 by this suction negative pressure, and it is a vacuum cleaner through the extension pipe 14, the hand operation pipe 13, and the dust collection hose 12. The air is sucked into the dust bag 15 of the main body 11, and the dust is collected in the dust bag 15.

  Further, when the suction port body 20 is removed from the extension pipe 14, the locking means (not shown) is released, and the extension pipe 14 is pulled out from the connection pipe 22 of the suction port body 20.

  At this time, since the connection pipe 22 is held upright by the vertical direction biasing means and the horizontal direction biasing means, the connection pipe 22 does not fall down at the moment when the connection pipe 22 is separated from the tip of the extension pipe 14. .

  Accordingly, when the extension pipe 14 and the connection pipe 22 are separated from each other, it is not necessary to support the connection pipe 22, and the surface to be cleaned F is damaged by the connection pipe 22 or the connection pipe 22 is damaged. Can be prevented.

  As described above, the suction port body 20 of the vacuum cleaner according to the present invention is connected to the suction port body 21 having the suction port 26 for sucking dust, and is a communication pipe of the vacuum cleaner 10. A connection pipe 22 connected to the extension pipe 14 is attached, and the connection pipe 22 is supported so as to be rotatable in the left-right direction around the first rotation axis A orthogonal to the longitudinal direction of the suction inlet body 21. The suction port body 20 is supported so as to be pivotable in the vertical direction about a second rotation axis B orthogonal to the first rotation axis A, and the suction port body 21 includes an extension tube. 14 torsion spring 90 that constitutes a vertical biasing means for holding connection pipe 22 in an upright state when separated from 14, lower spring holding part 69A, upper spring holding part 69B, and meshing that constitutes a horizontal biasing means Member 40, coil springs 41, 41, gears It is equipped with a 42.

  As a result, the connection pipe 22 separated from the extension pipe 14 can be held upright, and when connecting the connection pipe 22 and the extension pipe 14, the connection pipe 22 is supported in a direction in which it can be easily connected. It becomes unnecessary and can be easily connected to the vacuum cleaner 10.

  Although one embodiment according to the present invention has been described in detail with reference to the drawings, the specific configuration is not limited to the above-described embodiment. Design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.

  For example, as shown in FIG. 7, a pair of fixing hooks 45, 45 formed on the lower case 23 and a pivoting means for raising the connecting pipe 22 in the center of the suction port body 21 in the left-right direction, It may be constituted by a pair of rotating part hooks 46, 46 projecting from the outer peripheral surface of the part 32, fixed hooks 45, 45, and rubber members 47, 47 spanned between the rotating part hooks 46, 46 respectively. Good.

  In this case, since the pair of rubber members 47 and 47 urge the rotating portion 32 in the opposite directions, the rotating portion 32 can be held in a non-rotating state.

  Thereby, the connection pipe 22 is in a state of being erected at the central portion in the left-right direction of the suction port body 21 and can easily connect the extension pipe 14. Further, the number of parts may be small, and assembly can be facilitated.

It is a perspective view which shows the whole vacuum cleaner provided with the suction inlet of this invention. It is a top view which shows the suction inlet body of the vacuum cleaner of this invention. It is AA sectional drawing in FIG. It is a top view which shows a lower case. It is explanatory drawing which shows a horizontal direction biasing means. (A) is a principal part exploded perspective view which shows the connection part of a rear cover and a connection pipe, (b) is explanatory drawing which shows the assembly | attachment state of a connection pipe and a bearing part. It is explanatory drawing which shows the other example of the horizontal direction biasing means.

Explanation of symbols

10 Vacuum cleaner 14 Extension pipe (communication pipe)
20 Suction port body 21 Suction port body 22 Connecting pipe 26 Suction port 40 Engagement member (right-and-left direction biasing means)
41 Coil spring (right-and-left direction biasing means)
42 Gear portion (right-and-left direction biasing means)
69A Lower spring holding part (vertical biasing means)
69B Upper spring holding part (vertical biasing means)
90 Torsion spring (up-down direction biasing means)

Claims (1)

A connection pipe connected to the communication pipe of the vacuum cleaner and connected to the communication pipe of the vacuum cleaner is attached to the suction port body having a suction port for sucking dust, and the connection pipe is connected to the longitudinal direction of the suction port body. It is supported so as to be pivotable in the left-right direction around a first pivot axis that is orthogonal, and is supported so as to be pivotable in a vertical direction around a second pivot axis that is orthogonal to the first pivot axis. A suction port of a vacuum cleaner,
The suction port body of the vacuum cleaner, wherein the suction port body includes a vertical direction biasing means and a horizontal direction biasing means for holding the connection pipe spaced apart from the communication pipe in an upright state.

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