JPH0712054U - Vacuum cleaner - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the packing, transportation, and storage of the connecting pipe of an electric vacuum cleaner, and to make it easy to expand and contract. [Structure] The connecting pipe 6 connecting the floor nozzle 3 and the operation handle 5 is composed of a first pipe 7, a second pipe 8 inserted therein, and a tubular sleeve 12, and the tubular sleeve 12
A steel ball 9 that is locked to the pipes 7 and 8 and a coil spring 15 that biases the tubular sleeve 12 are built therein to allow the first pipe 7 and the second pipe 8 to freely expand and contract.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric vacuum cleaner having a connecting pipe for connecting a floor nozzle and an operating handle.

[0002]

[Prior art]

 Conventionally, in this type of vacuum cleaner, a handle is arranged at the other end of a hose connected to the main body as shown in Japanese Patent Laid-Open No. 3-151925, and an intake passage is formed at the end of the handle. The structure in which the floor nozzle is connected via an extension pipe is common.

A description will be given below with reference to FIGS. 5 and 6. Reference numeral 51 is a main body of the electric vacuum cleaner in which a dust collecting chamber 52, a motor 53 and the like are arranged. Reference numeral 54 is an intake port provided in front of the dust collection chamber 52, to which the connection pipe 56 of the hose 55 is connected. An extension pipe 58 is connected to the handle 57 of the hose 55, and a floor nozzle 60 is connected to the end of the extension pipe 58 via a floor nozzle pipe 59. Further, the handle 57 has a built-in switch 61 for controlling the rotation of the motor 53 and the like. Further, as a detection means for detecting the amount of dust in the dust suction passage 62, the light emitting element 63 and the light receiving element 64 are made to face the relative position in the dust suction passage 62 of the handle 57, and the indicator 65 is indicated by the amount of light received by the light receiving element 64. The handle 57 has a built-in control circuit 66 for actuating it. In addition, recently, it is often seen that the joint between the hose 55 and the handle 57 is arranged below the grip.

[0004]

[Problems to be solved by the device]

 However, in the above-described conventional configuration, since the switch 61, the light emitting element 63, the light receiving element 64, the control circuit 66, etc. are built in the handle 57, the handle 57 becomes large and heavy, and the arm becomes very tired during use. there were. Further, the extension pipe 58 is also thick and heavy in order to incorporate a power supply wire to the floor nozzle 60, secure an intake passage and secure strength. Further, since the handle 57, which is a grip portion, is arranged at the tip of the hose 55, the hose 55 always moves at the base of the handle 57 when the handle 57 is moved, which puts a burden on the hand during operation. In order to reduce the weight of the handle part, only the switch is arranged in the handle part, the light emitting element, the light receiving element, the control circuit, etc. are installed on the floor nozzle side, and the hose is directly connected to the floor nozzle to operate the handle part. However, the handle for moving the floor nozzle and the connecting pipe that connects the floor nozzle were long and there was a problem in packing, transportation and storage. As a method for solving the above-mentioned problems, it is conceivable to use a telescopic pipe and use a screw or the like to tighten and lock a wedge ring to keep the telescopic pipe in a locked state. If the pipe contracts during cleaning due to force, or if the screw is tightened too hard, it will take a very strong force to unscrew the pipe in order to contract it, which is very difficult to use.

The present invention solves the above problems, and provides an electric vacuum cleaner having a connecting pipe that improves the packing, transportation, and storability and facilitates the expansion and contraction operation.

[0006]

[Means for Solving the Problems]

 To achieve the above object, the first means of the present invention is, in a connecting pipe connecting a connecting pipe and an operating handle, a first pipe, a second pipe inserted into the first pipe, and the first pipe. It is composed of a tubular sleeve that locks the pipe and the second pipe, and the tubular sleeve contains a steel ball and is biased in one direction by an elastic member.

The second means is to arrange the recesses and the steel balls on the inner surface of the tubular sleeve in an equilateral triangle shape. A third means is to integrally form a plurality of protruding ribs, which penetrate the first pipe and are in contact with the second pipe, from the inner surface of the tubular sleeve with the tubular sleeve.

[0008]

[Action]

 In the above-mentioned structure, the action of the first problem solving means is that by sliding the tubular sleeve in the direction opposite to the urging direction of the elastic member, the steel ball can be moved to the concave portion of the tubular sleeve, and When the steel ball moves into the recess of the sleeve and the locked state is released, the second pipe is inserted into the first pipe to facilitate packing, transportation and storage. Further, by pulling out the second pipe, the steel ball is locked to the second pipe, the tubular sleeve moves in the urging direction of the elastic member and clamps the steel ball, and the second pipe is fixed.

Further, the action of the second problem solving means is to dispose the steel balls which hold the locked state at the positions of the equilateral triangle, thereby eliminating the rattling of the first pipe and the second pipe, and The second pipe is locked almost at the center, and the operation force of the handle during cleaning is transmitted to the floor nozzle.

Further, the action of the third problem solving means is that the second pipe can be locked in the central portion of the first pipe by the plurality of protruding ribs provided on the tubular sleeve, and the first pipe and the second pipe can be locked. It eliminates rattling and transmits the operating force of the handle to the floor nozzle. The action of moving the tubular sleeve in the anti-biasing direction or extending and contracting the pipe by pulling out the second pipe is the same as that of the first means, and the description thereof is omitted. As described above, it is possible to provide a telescopic pipe having good operability.

[0011]

【Example】

 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. 1 is a vacuum cleaner body with a built-in fan motor, etc., a floor nozzle having a connection pipe 2 with a control circuit for controlling the vacuum cleaner that sucks in dust, 3 and floor nozzle 3 and vacuum cleaner body 1 It has a hose 4 for connection. The operation handle 5 is connected to the floor nozzle 3 by a connecting pipe 6. The connecting pipe 6 is composed of a first pipe 7 and a second pipe 8, and is fixed by a steel ball 9 to keep the locked state. The steel ball 9 penetrates a hole 10 formed in the first pipe 7 and is locked in the recess 11 of the second pipe 8 to fix the first pipe 7 and the second pipe 8. The tubular sleeve 12 is provided with a holding surface 13 for holding the steel ball 9 and a holding surface 14 for holding the steel ball 9 when the locked state is released. Further, the cylindrical sleeve 12 is biased by the coil spring 15 in the direction of the arrow X, as shown in FIG. By moving the tubular sleeve 12 in the anti-urging direction in the above state, the steel ball 9 can be moved to the holding surface 14, the steel ball 9 moves to the holding surface 14, and the locked state of the second pipe 8 is released. Then, the second pipe 8 is stored in the first pipe 7 as shown in FIG. Further, by pulling out the second pipe 8, the steel ball 9 is locked in the concave portion 11 of the second pipe 8 and the tubular sleeve 12 is moved in the direction of the Y arrow by the coil spring 15 to move the steel ball 9 into the tubular sleeve 12. The second pipe 8 is fixed by the holding surface 13 of the.

Next, a second embodiment is shown in FIG. The same parts as those shown in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The difference from the first embodiment is that the steel balls 9 that keep the connecting pipe 6 in the locked state are arranged in an equilateral triangle shape. By arranging the steel balls 9 as described above, the second pipe 8 is fixed substantially at the center of the first pipe 7 and prevents looseness between the first pipe 7 and the second pipe 8. The operation force of the operation handle 5 fixed to 7 can be transmitted to the floor nozzle 3 fixed to the second pipe 8. The expansion and contraction action of the connecting pipe 6 is the same as that of the first embodiment, and the explanation is omitted.

Next, a third embodiment is shown in FIG. The same parts as those shown in the first embodiment are designated by the same reference numerals and the description thereof will be omitted. The difference from the first embodiment resides in that a protruding rib 17 is formed from the inner surface of the cylindrical sleeve 12 through the through hole 16 provided in the first pipe 7 and in contact with the second pipe 8. By the protruding rib 17 coming into contact with the second pipe 8, backlash between the first pipe 7 and the second pipe 8 is prevented.

[0014]

[Effect of device]

 As described above, according to the present invention, a holding pipe is secured, rattling is prevented, and a connecting pipe that facilitates expansion and contraction operability is supplied to reduce the weight of the handle portion, and operability is good. An electric vacuum cleaner can be provided that facilitates packing, transportation, and storage.

[Brief description of drawings]

FIG. 1 is a schematic view of an electric vacuum cleaner showing a first embodiment of the present invention.

FIG. 2 is a sectional view of a main part of a connecting pipe of the electric vacuum cleaner.

FIG. 3 is a cross-sectional view of an essential part of a connecting pipe showing a second embodiment of the present invention.

FIG. 4 is a cross-sectional view of an essential part of a connecting pipe showing a third embodiment of the present invention.

FIG. 5 is a schematic view showing a conventional vacuum cleaner.

FIG. 6 is a cross-sectional view of main parts of the electric vacuum cleaner.

[Explanation of symbols]

 1 Vacuum Cleaner Main Body 2 Connection Pipe 3 Floor Nozzle 4 Hose 5 Operation Handle 6 Connection Pipe 7 First Pipe 8 Second Pipe 9 Steel Ball 10 Hole 11 Recess 12 Cylindrical Sleeve 13 Locking Surface 14 Holding Surface 15 Coil Spring 16 Through Hole 17 protruding rib

Claims (3)

[Scope of utility model registration request] 1. A body including a fan motor, a floor nozzle connected to the body via a connecting pipe and a hose, and a connecting pipe connecting the connecting pipe and an operating handle to each other. The first pipe,
It is composed of a second pipe inserted into the first pipe and a tubular sleeve that locks the first pipe and the second pipe, and the tubular sleeve is a steel ball and an elastic member that biases in one direction. Vacuum cleaner with a built-in. 2. The electric vacuum cleaner according to claim 1, wherein the steel balls contained in the tubular sleeve are arranged in an equilateral triangle shape. 3. The vacuum cleaner according to claim 1, wherein a protruding rib that penetrates the first pipe and contacts the second pipe is integrally formed on the inner surface of the tubular sleeve.