JPS6129322A - Floor suction port of electric cleaner - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention has a floor suction port of a vacuum cleaner, in particular, a switching device that selectively moves the floor brush up and down according to the condition of the floor to be cleaned. □And in order to improve the switching operability of this switching device, a foot-operated switching operation body is provided at the left and right positions on the upper surface of the main body of the suction port.

[Conventional technology]

Conventionally, we have used a curtain body to connect the respective switching operation bodies placed on the left and right sides, a cam body to move the floor brush up and down, and a cam body to give joint motion to the switching and stabilize the position of the cam body. The structure is complicated due to the need for joints, etc., and a large load is applied due to foot operation... In order to withstand this, the parts of the switching device must be made relatively large, resulting in openings. ing. (U.S. Pat. No. 3,82
(See Specification No. 1,831) [Problems to be Solved by the Invention] Therefore, the present invention solves the above problems and provides a sliding cam body that selectively switches the vertical position of the floor brush, and a sliding cam body that selectively switches the vertical position of the floor brush, and It is an object of the present invention to provide a floor suction port which can be easily operated and is stable in the switching position, in a device having a foot-operated switching operation body for operating the sliding cam bodies arranged at respective positions. It is said that

[Means for solving problems]

The structure of the present invention for achieving the above object will be described with reference to embodiments. 1 is an upper case body, and 2 is a lower case body fixed to this upper case body 1 with screws 3 etc. . 4
is a dust suction port provided in the lower case body 2, and suction grooves 5 are provided on the left and right sides thereof. Reference numeral 6 denotes a shield made of a soft and highly elastic material such as rubber or soft vinyl chloride, and is arranged before and after the suction groove 5. Note that this shield 6 is provided for the purpose of increasing the flow velocity of the air flow flowing into the suction groove 5 to improve suction performance. 7 is a joint held by the upper case body 1 and the lower case body 2 so as to be freely rotatable in the vertical direction (in the direction of the R arrow shown in Fig. 3), and 8 is rotatably attached to the rear of this joint 7. The bent pipe is connected to an extension pipe (not shown) from the main body of the vacuum cleaner. Reference numeral 9 denotes a retaining body for preventing the joint 7 and the bent pipe 8 from being pulled out. 10 is for configuring a ventilation path from the dust suction port 4 to the joint 7;
It is an air passage structure. 11 is a protective bumper made of a soft material such as rubber or soft vinyl chloride. Reference numeral 12 denotes a floor brush, which has a brush body 14 flocked to a brush stand 13 made of synthetic resin or the like, and is mounted in a brush mounting groove 15 integrally provided in the lower case body 2 so as to be vertically movable. It is′.

Reference numerals 16 and 17 indicate a switching operation body cloth and a left switching operation body for operating the sliding cam body 18 for selectively moving the floor brush 12 up and down.

19 is a shaft provided integrally with the switching operation body cloth 16 and the switching operation body 17, and 21 is a shaft provided on the switching operation body cloth 16.
and a load receiving part which is also integrally provided on the left side 17 of the switching operation body. At the lower bearing part 24 provided in the load receiving part 21
are each rotatably held by a support portion 25 provided integrally with the lower case body 2. 26 is a coil spring for constantly pressing the floor brush 12 downward. 2
Reference numeral 7 designates small running wheels provided at the front left and right corners of the mouthpiece main body, and 28 designates large running wheels provided at the rear near the switching operation body cloth 16 and the switching operation body difference 17. .

The large wheel 28 is composed of a wheel portion 29 made of hard synthetic resin, and a tire portion 30 made of a soft material such as rubber or soft synthetic resin and arranged around the outer circumference of the wheel portion 29. be. 31 is a notch-shaped opening for attaching the large wheel 28. 32 is an axle for rotatably supporting the bearing portion 33 of the large wheel 28, and includes a bearing rib A34 and a bearing rib B3 that are integrally provided on the upper case body 1.
5, and a bearing rib C integrally provided on the lower case body 2
36, which is held between bearing ribs D37.

The sliding cam body 18 has a connecting part 39 located in the center thereof, protrusions 40 and 40' provided on the left and right outer positions thereof, and provided integrally with the brush stand 13 of the floor brush 12 at the upper position. an inclined part 43.43' provided between an upper holding part 41.41' for holding the projecting pieces 40, 40' and a lower holding part 42.42' for holding the projecting pieces 40, 40' in the lower position; It is composed of a cam portion 44, 44' and spring portions 45, 45' provided at both left and right ends.

The connecting portion 39 has a substantially U-shaped cross section with an upward opening, and side walls 46 and 46' having a U-shaped cross section are connected to both left and right ends of the connecting portion 39, and the shaft body 47 ,47
' is provided by integral molding.

48, 48' are openings provided in the bottom surface 49 of the connecting portion, and are located below the shaft body 47, 47'. Reference numerals 50 and 51 denote sliding cam bodies 1 that are integrally provided with the switching operation body cloth 16 and the left and right switching operations 17, respectively.
8, each having grooves 52 and 53 into which the shafts 47 and 47' are inserted. 54 and 54' are the spring parts 45 and 45, respectively.
A gentle mountain-shaped protrusion provided at the end of the 55
．． Reference numeral 55' denotes a projection integrally provided on the lower case body 2 in correspondence with these projections 54 and 54'. In addition, these spring parts 45.45', mountain-shaped protrusion parts 5'4.54
', and protrusions 55 and 55' are provided to provide articulated movement in the switching operation and to stabilize the position of the sliding cam body 18 so that it does not move inadvertently due to external shocks, etc. It is.

[Effect]

Next, to explain the operation of the embodiment of the present invention, FIG. This figure shows a state in which the protruding pieces 40 and 40' provided on the brush stand 13 of the floor brush 12 are being pushed upward against the force.

From this state, when the switching operation body 17 is pushed down in the direction of the arrow P in FIG. 1 by a foot operation, the sliding cam body 18 is moved by the member 51 in the direction of the arrow Q not shown in FIG.

At this time, the protrusions 40, 40' are pushed against the inclined portions 43, 43 of the sliding cam body 18 by the pressing force of the coil spring and their own weight.
', and the floor brush 12 switches to the lower position.

On the other hand, due to the movement of the sliding cam body 18, the switching operation body cloth 16
The piece 50 also moves in the direction of arrow Q, and the switching operation body cloth 16 is rotated in the direction of arrow S, resulting in the state shown by the dotted line in FIG. From this state, if the switching operation body cloth 16 is pushed down in the opposite manner to the above, the state shown in FIG. 1 is restored.

As a result of the above switching operation, the connecting portion of the sliding cam body 18 is
Although a relatively large compressive load is applied, since the connecting portion 39 has a substantially U-shaped cross section, it is not easily deformed or distorted by the compressive load. In addition, an opening 48.4 is provided on the lower bottom surface of the shaft body 47°47'.
8' is provided, but the side wall 46.46 of the connecting part 39
' are connected by the shaft bodies 47, 47', so the opening 48.
Because of the provision of 48', the strength against compressive loads does not particularly deteriorate. Furthermore, since the cam portions 44 and 44', which necessarily include the notched portions 56 and the like that cause weakening of the strength against compressive loads, are placed outside the connecting portions 39 where a relatively large compressive load is applied, the sliding cam body No. 18 can ensure sufficient strength without providing any special reinforcing bodies or the like.

Moreover, the parts 50 and 51 of the switching operation body are connected to the side wall 4 of the connecting part 39.
6.46', so the sliding cam body 18
The position in the longitudinal direction is not affected by dimensional errors of the upper case body 1 or the lower case body 2, and the relative positions of the switching operation body cloth 16 and the switching operation body valve 17 are always stable. This ensures reliable operation at all times.

Next, a method of assembling the switching portion will be explained using FIG. 8.

In the figure, 57 is an assembly stand.

First, as shown in the figure, the switching operation body cloth 16, the switching operation body valve 1
7, air passage structure 10, coil spring 26, floor brush 12
etc. to the upper case body 1. Then, the sliding cam body 18 is attached as shown by the arrow T in the figure. At this time, the bottom surface 49 of the connecting portion 39 of the sliding cam body 18 has an opening 48.48.
' is provided, so the pieces 50, 51 and the shaft bodies 47, 47
Since you can visually check the alignment of ', you can easily align it. In addition, the pieces 50 and 51 are
Since the sliding cam body 18 is sandwiched between the side walls 46, 46' of 9, the sliding cam body 18 is reliably held, and problems such as falling off during the next assembly process will not occur.

As mentioned above, the floor suction port according to the present invention has a solid sliding cam body, is easy to assemble, and the relative positions of the switching operation body cloth 16, the switching operation body valve 17, and the sliding cam body 18 are reliably determined. , stable operation can be obtained, and the sliding cam body 1
8 is provided with a connecting part 39, a cam part 44, 44', and a spring part 45°45' for articulation, respectively.
It has a small number of parts and a simple structure.

In addition, since the switching operation body cloth 16 and the switching operation body valve 17, which can be independently operated by foot, are provided on the left and right positions of the upper surface of the mouthpiece main body, the user can perform the switching operation while standing. At this time, since the switching operation bodies are separated, there will be no inconvenience such as incorrect operation or one switching operation body getting in the way.

〔Effect of the invention〕

Since the present invention has the above configuration, it has the following effects.

(1) In the floor suction port of a vacuum cleaner that is used by selectively moving the floor brush up and down, protrusions are provided on the wall of the brush stand to which the floor brush is fixed, and the upper case body on both sides of the joint is provided with a Since two switching operation bodies of the shape of the shape are rotatably inserted, it is easy to select the vertical movement of the floor brush and the operation can be performed accurately.

(2) A sliding cam body is provided with two protruding shaft bodies that respectively engage the pieces housed in the case of each switching operation body, and the sliding cam body is provided with a sliding cam body on which the protruding pieces are slidably disposed. Since the sliding cam body is made to slide in either the left or right direction by forming a contacting inclined surface and operating a part protruding from the upper case body of the switching operation body, the vacuum cleaner can be moved. When operating it, you can tell at a glance whether the brush is coming out of the suction mouth or inside it, and there are two switching controls on the left and right sides of the top of the mouthpiece body that can be operated independently by foot. The user can perform the switching operation while standing, and since the switching operating bodies are separated at this time, there will be no inconvenience such as incorrect operation or one switching operating body getting in the way.

(3) Furthermore, since the projecting piece on the wall of the brush stand slides against the inclined surface and moves up and down, thereby selectively moving the floor brush up and down, the operability is good, and the switching position It is possible to obtain a floor suction port for a vacuum cleaner that is stable and capable of reliable switching operations.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of essential parts of an embodiment of the present invention, FIG. 2 is a cross-sectional view of Xl X1 in FIG. 4, FIG. 3 is a vertical cross-sectional view, and FIGS. 4 and 5 are plan views of one embodiment Figure and bottom view, Figure 6 is a sectional view of X2-X in Figure 4, Figure 7 is an explanatory diagram of the operation method,
FIG. 8 is an explanatory diagram of the assembly method. 1... Upper case body, 2... Lower case body, 12...
Floor flange, 16. 17... Switching operation body, 18... Sliding cam winter body, 19... Shaft, 21... Load receiver, 39...
Connecting part, 44.44'...Cam part, 45.4'5'.
・・Spring part, 47° 47′・・Shaft body, 48.48′・
...Opening, 49...Bottom, 50.51...Piece, 5
2.53... Groove. Sub-Agent Tatsu Unuma Figure 1 Figure 21: ; 1 Figure 3 Figure 4 Figure 1- Figure 5 Seki No. 7 H, 24 Figure 8

Claims (1)

[Claims] 1. A floor vacuum cleaner that is equipped with a floor brush, has a rotatable joint held by an upper case body and a lower case body, and is used by selectively moving the floor brush up and down. In the suction port, a projecting piece is provided on the wall surface of the brush stand to which the floor brush is fixed, and two dog-shaped switching operation bodies are rotatably inserted into the upper case body on both sides of the joint, and each switching operation is performed. A sliding cam body is provided with two protruding shaft bodies that respectively engage with the pieces housed in the case of the body, and the sliding cam body has an inclined surface that slides into contact with the protruding piece. , and by operating a part of the switching operation body that protrudes from the upper case body, the sliding cam body slides in either the left or right direction, and the protruding piece slides against the inclined surface to move up and down. A floor suction mouth for a vacuum cleaner, characterized in that the floor brush is selectively moved up and down by this.