JP2005125065A - Bendable extension tube of vacuum cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide the bendable extension tube of a vacuum cleaner in which spatial organization is improved so that a user can easily do cleaning working by bending an extension tube by easy button operation without bending down or taking a low posture. <P>SOLUTION: The extension tube forming an airtight passage between a cleaner body and a suction brush and having a body capable of being bent by button action comprises a first extension tube; a second extension tube to which the first extension tube is turnably connected; a lock button which is elastically installed in the first extension tube and regulates each turning action of the first and second extension tubes; and a sealing cover body which prevents the lock button from coming off and seals the first and second extension tubes. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vacuum cleaner, and more particularly to a refractive extension tube for a vacuum cleaner that can bend the connecting portion of the extension tube so that the space under furniture such as a bed and a sofa can be more easily cleaned. .

  Generally, a vacuum cleaner sucks dust and the like on the surface to be cleaned together with air by a vacuum suction force generated by a vacuum suction motor provided in the vacuum cleaner body. A flow path for connection in the state is formed.

  Such a flow path can be provided in various forms depending on the type of the vacuum cleaner. Generally, in the case of a canister type vacuum cleaner, a flexible hose that connects the main body and the operating handle, an operating handle, and a suction brush are provided. It consists of an extension tube that connects. Such an extension tube is generally a telescopic type whose length can be adjusted as necessary, or each of a plurality of extension tubes is provided so as to be separable and assembled.

  However, in order for the user to clean the lower part of furniture such as a bed or sofa, in the case of the suction brush connected by the conventional extension pipe as described above, the angle between the extension pipe and the suction brush is fixed. In many cases, it is necessary to apply a vacuum cleaner by turning the extension tube with the suction brush in close contact with the bottom surface in a low posture. In addition, even if the angle between the extension tube and the suction brush can be changed, there is an inconvenience that the user has to bend the waist in order to put the suction brush in the lower part of the furniture, and improvement is required. .

  The present invention has been made to solve the above-described problems, and its purpose is to allow the user to operate the extension tube with a simple button operation without bending the waist or lowering the posture. It is an object of the present invention to provide a refractive extension tube of a vacuum cleaner having an improved structure so that the cleaning work can be easily performed by refracting.

  In order to achieve the above object, a bending extension tube of a vacuum cleaner according to the present invention forms an airtight flow path between a vacuum cleaner body and a suction brush, and the body is bent by a button operation. A first extension pipe; a second extension pipe to which the first extension pipe is pivotally coupled; and a first extension pipe elastically provided on the first extension pipe. A lock button for restricting the respective pivoting movements of the extension pipe; and a sealing cover body for preventing the lock button from coming off and sealing the first and second extension pipes.

  According to a preferred embodiment of the present invention, the lock button protrudes from one of the rotation shafts of the joint portion to which the first extension tube and the second extension tube are rotatably connected. It is good to be provided in the accommodation protrusion.

  The lock button may include at least one retaining rib projecting along the outer peripheral surface and a restricting protrusion for restricting rotation of the first and second extension pipes.

  The housing projection includes at least one guide projection protruding from the outer peripheral surface, and a slide groove is provided in a portion corresponding to the guide projection of the lock button, and the lock button is pushed and released. It is preferable that rotation of the lock button is suppressed while the slide groove is guided to the guide protrusion.

  Further, an elastic member is interposed between the lock button and the housing projection, and when the lock button is pushed, the lock button can be urged in the release direction.

  The second extension pipe is formed at a position corresponding to the restricting protrusion, and a slot plate including a coupling slot in which one end is opened and the receiving protrusion is slidably coupled to the restricting protrusion, and the axial direction of the restricting protrusion It is preferable to include a locking piece that selectively locks the restricting projection by a change in position.

  The locking piece and the slot plate may be separated by a distance equal to or greater than the thickness of the restricting protrusion.

  The sealing cover body is coupled to the first cover body provided with a button hole having a size corresponding to the outer peripheral surface of the lock button, and the first cover body and the first cover body. It is preferable to include a second cover body that seals each connecting portion of the extension pipe.

  According to the refractive extension tube of the vacuum cleaner according to the present invention as described above, the user can refract the extension tube with a simple button operation without bending the waist or lowering the posture. The lower part of furniture such as a bed or sofa can be easily cleaned, and the convenience of the user during cleaning is increased.

  Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS.

  FIG. 1 is a perspective view showing a refractive extension tube of a vacuum cleaner according to the present invention. In the bending extension tube 100 of the vacuum cleaner according to the present invention, the first and second extension tubes 110 and 120 are refractably coupled by the push and release operation of the lock button 130 to prevent leakage of the intake air from the connecting portion. In addition, a sealing cover body 140 is provided for preventing the lock button 130 from coming off in the axial direction.

  As shown in FIG. 2, the first extension pipe 110 has a cylindrical joint portion J1 having an opening (not shown) penetrating one side facing the second extension pipe 120. In the vicinity of the approximate center, there is formed an accommodating projection 111 projecting coaxially with the rotating shaft. The lock protrusion 130 is provided on the receiving protrusion 111 so as to be able to be pushed and released in the axial direction. Preferably, the receiving protrusion 111 is provided so as to be inserted into the lock button 130 with the elastic member S interposed therebetween. Is good.

  As shown in FIG. 2, at least one guide protrusion 111a and a slide groove 130a are formed on the receiving protrusion 111 and the lock button 130 in a complementary manner. Accordingly, when the lock button 130 is pushed and released by the guide projection 111a coupled to the slide groove 130a provided on the outer peripheral surface, the path is guided and interlocked with the rotation operation of the first extension pipe 110. The buttons rotate together with the same rotation angle.

  On the outer peripheral surface of the lock button 130, a retaining rib 131 for preventing the lock button 130 from coming off in the axial direction, and a regulation protrusion for regulating the rotation angle of the first and second extension pipes 110, 120 are provided. 132 is projected.

  As shown in FIG. 2, the retaining rib 131 is at least 1 so as to be equal to or larger than the diameter of the lock button 130 in order to prevent the lock button 130 exposed outside the sealing cover body 140 from coming off in the axial direction. It is preferable to project along one circumferential direction. Preferably, as shown in the drawing, each may be provided symmetrically so that the retaining ribs 131 are not tilted by being supported by the sealing cover body 140 uniformly. is there.

  At least one restriction protrusion 132 protrudes along the circumferential direction at a position that does not overlap the retaining rib 131. Preferably, the height of the first and second extension pipes 110 and 120 may be lower than that of the retaining rib 131. The first and second extension pipes 110 and 120 may have a tapered inclined surface on one side even when the user has a small force. It is preferable to be able to refract.

  The second extension tube 120 includes a joint housing portion J2 having a shape corresponding to the cylindrical joint portion J1 so that the second extension tube 120 can be rotatably coupled to the cylindrical joint portion J1 provided in the first extension tube 110.

  The joint housing portion J2 includes a slot plate 121 having a coupling slot 121a in which the housing projection 111 is slidably coupled to the vicinity of the center thereof, and the first and second extension pipes 110, A locking piece 122 that restrains the rotation of 120 is included.

  The slot plate 121 has a substantially disc shape and is formed so that its diameter corresponds to that of the cylindrical joint portion J1, and the inner peripheral surface of the joint housing portion J2 and the outer peripheral surface of the cylindrical joint portion J1 are in close contact with each other. It is better to do so. Further, the coupling slot 121a is formed to have a width corresponding to the diameter of the receiving projection 111 so that the center of the slot plate 121 and the center of the receiving projection 111 substantially overlap each other. Further, the closed end portion may be formed in an arc shape as shown in FIG. 2 so that the first extension tube 110 can rotate about the accommodation protrusion 111.

  The locking piece 122 restricts the rotation of the first and second extension pipes 110 and 120 while selectively abutting against the restriction protrusion 132. Preferably, as shown in FIG. 2, it is formed at a predetermined interval from the slot plate 121, and the separation distance is larger than the thickness of the restricting protrusion 132. Therefore, when the user pushes the lock button 130, the regulating protrusion 132 moves away from the locking piece 122 while changing its axial position, thereby separating the space between the locking piece 122 and the slot plate 121. You can pass through.

  The sealing cover body 140 prevents leakage of sucked air from between the joint accommodating portions J1 and J2 of the first and second extension pipes 110 and 120, and prevents the lock button 130 from coming off in the axial direction. The first cover body 141 and the second cover body 142 may be included.

  A button hole 141 a for exposing the lock button 130 to the outside is formed through the first cover body 141 in a size corresponding to the outer peripheral surface of the lock button 130. Preferably, the button hole is formed to have a size not less than the diameter of the outer peripheral surface of the lock button 130 and less than the diameter of the outer peripheral surface of the lock button 130 including the retaining rib 131, and the retaining rib 131 is formed in the first cover body 141. The lock button 130 may be provided so as to prevent the lock button 130 from coming off in the axial direction.

  Hereinafter, the operation of the refractive extension tube of the vacuum cleaner according to the present invention will be described with reference to FIGS.

  FIG. 3 is a view showing a state in which the coupling angle of the first and second extension pipes 110 and 120 is 0 °, and a state in which the sealing cover body 140 is removed in order to explain the operation state more clearly. FIG. When cleaning a general surface to be cleaned, such as a floor surface, the cleaner is applied with the coupling angle fixed at 0 ° in this way, but the restricting protrusion 132 is in contact with one end 122a of the locking piece 122. The first and second extension pipes 110 and 120 are prevented from being bent in the direction A in FIG. 3 while being in contact with each other, and the retaining rib 131 is in contact with the other end 122b of the locking piece 122 while being in contact with the first and the second. By supporting the two extension pipes 110 and 120, the first and second extension pipes 110 and 120 are prevented from being refracted in the direction B in FIG.

  When the user vacuums the space in the lower part of the bed or sofa, when the lock button 130 is pushed, the restricting projection 132 moves away from the engaging piece 122 and between the engaging piece 122 and the slot plate 121. It will be able to pass through the space part. Therefore, when the user refracts the first extension tube 110 or the second extension tube 120 in a state where the lock button 130 is pushed, the restriction projection 132 is formed in the space portion between the locking piece 122 and the slot plate 121. It can be rotated by an angle desired by the user while abutting the inner peripheral surface.

  According to a preferred embodiment of the present invention, the first and second extension tubes 110 and 120 are bent to allow the user to vacuum the lower part of furniture such as a bed and sofa in the most comfortable posture. The angle is preferably maintained at 45 °. Therefore, when the angle of the first and second extension pipes 110 and 120 from the center of the lock button 130 becomes 0 °, the regulation protrusion 132 is an imaginary line that connects the one end 122a that is in contact with and supported by the locking piece 122. When the angle of the first and second extension pipes 110 and 120 is 45 °, the inner angle of the imaginary line connecting the points that are in contact with and supported by the other end 122b of the locking piece 122 is 45 °. It is good to be prepared for.

  As described above, when the regulation protrusion 132 reaches the fixed position, the tapered inclined surface formed at one end slides the locking piece 122 and urges the lock button 130 in the release direction by the elastic member S. Accordingly, the lock button 130 returns to the state before the user pushes the lock button 130 in order to refract the refractive extension tube 100 first.

  In order to return the refractive angle of the first and second extension pipes 110 and 120 of the refractive extension pipe 100 according to the present invention to 0 ° again for cleaning the lower part of the furniture and cleaning the general floor surface. When the user opens the first and second extension pipes 110 and 120 in the reverse order of the above procedure, that is, in a state where the lock button 130 is pushed, the elastic member S urges the lock button 130 to return to the original state. Return to the position.

  While the invention has been illustrated and described in connection with a preferred embodiment for illustrating the principles of the invention, it is not intended to be limited to the precise construction and operation of the invention as shown and described. On the contrary, those skilled in the art will appreciate that many changes and modifications can be made to the present invention without departing from the spirit and scope of the appended claims. Accordingly, such appropriate changes and modifications and equivalents should also be considered within the scope of the present invention.

It is a perspective view which shows the refractive extension tube which concerns on this invention. It is a disassembled perspective view of the refractive extension tube which concerns on this invention. It is a perspective view which shows the state before refraction | bending of the refractive extension tube which concerns on this invention with which the sealing cover body was removed. It is a perspective view which shows the state after refraction | bending of the refractive extension tube which concerns on this invention with which the sealing cover body was removed.

Explanation of symbols

100 refraction extension pipe 110 first extension pipe 111 accommodation protrusion 111a guide protrusion 120 second extension pipe 121 slot plate 121a coupling slot 122 locking piece 130 lock button 130a slide groove 131 retaining rib 132 regulating protrusion 140 sealing cover body 141 142 First and second cover bodies S Elastic members J1, J2 Cylindrical joint and joint housing part

Claims (14)

In the extension tube that forms an airtight flow path between the vacuum cleaner body and the suction brush, and the body is refracted by the button operation,
A first extension tube;
A second extension tube to which the first extension tube is rotatably coupled;
A lock button that is elastically provided on the first extension pipe and restricts the rotation of each of the first and second extension pipes;
A bending extension tube for a vacuum cleaner, comprising: a sealing cover body that prevents the lock button from coming off and seals the first and second extension tubes.   The lock button is provided on a housing protrusion that protrudes from one of rotation shafts of a joint portion where the first extension tube and the second extension tube are rotatably connected. The refractive extension pipe of the vacuum cleaner according to claim 1.   3. The lock button according to claim 2, further comprising at least one retaining rib projecting along the outer peripheral surface, and a restricting protrusion for restricting rotation of the first and second extension pipes. Refractive extension tube of the vacuum cleaner described.   The housing protrusion includes at least one guide protrusion protruding from the outer peripheral surface, and a slide groove is provided in a portion corresponding to the guide protrusion of the lock button, and when the lock button is pushed and released, The refraction extension pipe of the vacuum cleaner according to claim 2, wherein the slide groove is guided to the guide protrusion to suppress the rotation of the lock button.   The vacuum cleaner according to claim 4, wherein an elastic member is interposed between the lock button and the housing protrusion, and when the lock button is pushed, the lock button is urged in a release direction. Refraction extension tube.   The second extension pipe is formed at a position corresponding to the restricting protrusion and a slot plate including a coupling slot in which one end is opened and the receiving protrusion is slidably coupled to the restricting protrusion, and the restricting protrusion extends in the axial direction. The bending extension tube of the vacuum cleaner according to claim 3, further comprising a locking piece that selectively locks the restricting protrusion according to a change in position.   The bending extension pipe of the vacuum cleaner according to claim 6, wherein the locking piece and the slot plate are separated by a distance equal to or greater than a thickness of the restricting protrusion.   The sealing cover body includes a first cover body provided with a button hole having a size corresponding to an outer peripheral surface of the lock button, and the first and second extension pipes coupled to the first cover body. 2. The refractive extension tube of the vacuum cleaner according to claim 1, further comprising a second cover body that seals each of the connecting portions. In the extension tube that forms an airtight flow path between the vacuum cleaner body and the suction brush, and the body is refracted by the button operation,
A first extension pipe in which a housing protrusion is provided at the center of a cylindrical connecting portion that is open on one side and provided with a lock button that is pushed / released by an elastic member;
A slot plate to which the receiving projection is slidably coupled, and a second extension pipe provided with a locking piece for selectively locking the lock button;
A refracting extension pipe for a vacuum cleaner, comprising: a sealing cover body having a buttonhole for sealing a connecting portion of the first and second extension pipes and exposing the lock button to the outside.   10. The lock button according to claim 9, further comprising at least one retaining rib projecting along the outer peripheral surface, and a restriction projection for restricting rotation of the first and second extension pipes. Refractive extension tube of the vacuum cleaner described.   The housing protrusion includes at least one guide protrusion protruding from the outer peripheral surface, and a slide groove is provided in a portion corresponding to the guide protrusion of the lock button, and when the lock button is pushed and released, The refractive extension tube of the cleaner according to claim 9, wherein a slide groove is guided to the guide protrusion to suppress rotation of the lock button.   The second extension pipe is formed at a position corresponding to the restriction projection and a slot plate having a coupling slot into which the receiving protrusion is fitted, and the restriction protrusion is selected by a change in the axial direction of the restriction protrusion. The bending extension tube of the vacuum cleaner according to claim 9, further comprising a locking piece that locks in a mechanical manner.   The bending extension pipe of the vacuum cleaner according to claim 12, wherein the locking piece and the slot plate are separated by a distance equal to or greater than a thickness of the restricting protrusion.   The sealing cover body includes a first cover body provided with the buttonhole, and a second cover that is coupled to the first cover body and seals the connecting portions of the first and second extension pipes. The refractive extension tube of a vacuum cleaner according to claim 9, further comprising a cover body.

Images