JPH0323161Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention relates to a main brush extension mechanism in a sweeper, especially a cart-type sweeper, and more specifically, the cleaning width can be changed in conjunction with the width adjustment of the sweeper body. Regarding the expansion and contraction mechanism of the main brush.

Conventional technology In general, in the case of a cart-type sweeper for cleaning floor surfaces, a main brush formed in a drum shape is mounted on a shaft between both widths of the machine body, and the opening of the main brush faces the hopper. provided.
Then, the main brush is rotated through the driving force of the wheels that rotate as the aircraft moves by hand,
Further, the cleaning action is achieved by sweeping the dust into the hopper through the rotating action of the main brush.

Problems that the invention aims to solve: However, when it comes to the main brush attached to the sweeper as mentioned above, the larger the length, the wider the cleaning width, which improves work efficiency when cleaning a wide area. On the other hand, if the length dimension is small, the width of the aircraft can be made narrower, which improves maneuverability in narrow passages, etc. However, in the case of conventional main brushes, they are Since it is formed to have a fixed length, there is a problem in that the length cannot be changed depending on the work place as described above.

The present invention is an attempt to improve the conventional situation in view of the above-mentioned actual situation.The main brush length is adjustable, and the main brush is attached to a sweeper whose width can be adjusted. This feature allows a cleaning width suitable for the work area to be obtained. Specific means for solving the above problems and their effects are as follows.

Means for Solving the Problems A support shaft that extends horizontally in the main brush chamber is formed to be extendable and retractable, and supports are fixed to both ends of the support shaft.

A base portion of a cylindrical brush body is attached to both supports, which are divided into right and left parts so as to be able to engage with each other, and are extendable and retractable along the width direction.

Function By expanding and contracting the support shaft and changing the distance between the two supports, the pair of brush bodies that are attached to opposite ends of the support shaft through the supports expand and contract, thereby causing the main brush to You can change the width of the .

Embodiments Specific embodiments of the present invention will be described below with reference to illustrative drawings.

FIGS. 1 to 4 are drawings showing a first embodiment, and in the drawings, reference numeral 1 indicates the body of the sweeper. The body 1 is composed of a frame body 1A and a main brush chamber 1B arranged at the rear of the frame body 1A. The frame body 1A is formed in a substantially U-shape so as to surround the front surface and both left and right side surfaces of a hopper 35, which will be described later. Further, the frame body 1A is divided at its front portion into a center frame 2a and a pair of left and right side frames 2b, 2b, and the tips of the side frames 2b, 2b are respectively fitted into the center frame 2a so as to be freely retractable. In addition, the same center frame 2a and side frames 2b, 2b
A caster 6 is attached to the bottom surface of each. The side frames 2b, 2b are provided so that the width interval thereof can be adjusted via a gear mechanism 3. More specifically, the gear mechanism 3 includes a pinion 4 that is horizontally rotatably supported within the center frame 2a, and a pinion 4 that is horizontally rotatably supported within the center frame 2a, and a pinion 4 that is horizontally rotatably supported within the center frame 2a, and
It consists of two racks 5, 5 which protrude relative to each other toward the pinion 4 and engage with the pinion 4 at a 180 degree phase position, and through the rotation of the pinion 4. By sliding the racks 5, 5 in opposite directions, the side frames 2b, 2 fix each rack 5, 5.
b can be moved forward and backward along the width direction.

Further, the drive shaft 4' of the pinion 4 is inserted into a rising portion 2a' formed on the center frame 2a,
A rotating shaft 7' of a sprocket 7, which will be described later, is connected to its upper end. As shown in Fig. 3, the hopper 35 has a box-shaped opening 35' for sweeping in dust and dirt that opens toward the rear, with the sweeping opening 35' facing the main brush chamber 1B. It is removably mounted on the fuselage 1. Further, the hopper 35 is formed so that both left and right side parts 35b, 35b can be slid along the width direction with respect to the center part 35a.
pins 36, 36 protruding from the sides of b, 35b, respectively;
By engaging the heads of the side frames 2b with flanges 37, 37 formed on the side frames 2b, 2b, the horizontal width thereof is changed in conjunction with the adjustment of the interval between the side frames 2b, 2b.

On the other hand, brackets 12, 12 are fixed to the rear ends of the side frames 2b, 2b, respectively, and from the brackets 12, 12, a handle rod 13 formed in a gate shape is erected diagonally rearward. be done. The handle rod 13 is divided into left and right parts at the middle part of its upper end, and the side frame 2
It is provided so that its width changes in conjunction with the adjustment of the interval between b and 2b. Further, front end portions of side plates 14, 14 constituting the main brush chamber 1B are fixed to the brackets 12, 12, respectively. The main brush chamber 1B includes a brush cover 15 and side plates 1 fixed to both left and right ends of the brush cover 15.
4 and 14, and a sweeping opening 35' for the hopper 35 and an opening facing the floor are formed on the front and bottom surfaces thereof, respectively. Also, main brush room 1
B brush cover 15 is divided into a center panel 15a and side panels 15b, 15b, and the width thereof is adjustable via a gear mechanism 16.

More specifically, like the gear mechanism 3, the gear mechanism 16 consists of a pinion 17 and two racks 18, 18 that mesh with the pinion 17, and one end of each rack 18, 18 is connected to the opposing side panel 15.
b, 15b, respectively, while the pinion 1
7 is horizontally rotatably supported on the center panel 15a, and a rotating shaft 9' of a sprocket 9 having a handle 8 is connected to its drive shaft 17', and by rotating the handle 8, The pinion 17 is rotated via the rotation shaft 9' and the drive shaft 17', and the side panels 15b and 15b are provided so as to be slid in opposite directions. Further, the sprocket 9 is connected to a chain case 10 provided between both the gear mechanisms 3 and 16 described above.
The sprocket 7 is pivotally supported at the front end of the chain case 10, and a chain 11 is stretched between the sprockets 7 and 9. Then, by rotating the handle 8, the sprocket 9 is rotated, and the chain 1 is rotated.
By passively rotating the other sprocket 7 through the gear mechanism 1, the pinions 4 and 17 of both the gear mechanisms 3 and 16 can be driven to rotate simultaneously. On the other hand, axles 19, 19 are provided to project laterally from the side plates 14, 14, respectively, and disk plates 20, 20 are rotatably supported on the axles 19, 19, respectively. Also, on the same axle 19, 19 there is a disk plate 2.
Wheels 21, 21 are rotatably supported on the outside of the wheels 21, 20, and a gear 22 that rotates together with the wheel 21 is fixed to the inside of one of the wheels 21, 21. .

Further, a support shaft 23 of a main brush chamber 28, which will be described later, is horizontally suspended in the main brush chamber 1B so as to be freely rotatable.
The support shaft 23 is provided so that its length changes in conjunction with the interval adjustment of the main brush chamber 1B. More specifically, the support shaft 23 is made of two pipes with different outer diameters, and is formed to be expandable and contractible by loosely fitting the other pipe into one of the pipes. The support shaft 23 is connected to the side plates 14, 14
It is inserted through arc-shaped slits 24a, 24a formed in the arc, and both ends thereof are supported by the above-mentioned disk plates 20, 20 via bearings 25, 25. Also, one end of the support shaft 23, that is, the gear 22
A gear 26 that meshes with the gear 22 is pivotally supported at the end opposite to the gear 22 . A one-way clutch 27 is built into the gear 26, and the clutch 27 is provided so that the support shaft 23 can be rotated in the opposite direction only when the wheels 21, 21 are rotated in the forward direction. A main brush 28 is supported on the support shaft 23. Same main brush 28
consists of disk-shaped supports 29, 29 fixed to both ends of the support shaft 23, and a brush body 30 horizontally suspended between the supports 29, 29, and the brush body 30 is a pair of left and right hollow drums having the same diameter. 31,3
A plurality of flocking rod portions 33, into which the brushes 32 are implanted, are provided alternately and facing each other by cutting out the peripheral wall portion of one at regular intervals, and both flocking rod portions 33, 33... are combined alternately. a ring 34 whose tips are loosely fitted into the inner circumferential surfaces of the hollow drums 31, 31;
By fixing them to 34, they are formed to be expandable and contractible. The brush body 30 is provided so that its width changes in accordance with the length of the support shaft 23 which is linked to the adjustment of the interval between the main brush chambers 1B.

In other drawings, 38 is the main brush 28
The arm 38 is formed to be extendable and retractable, and both ends thereof are connected to the slits 24b, 24 of the side plates 14, 14.
It is fixed to the disk plates 20, 20 through b. Further, a bolt 38' is provided upright on the arm 38, and the upper end of the bolt 38' is screwed into a knob 39 attached to the center panel 15a of the brush cover 15. Then, by moving the arm 38 up and down through the rotation operation of the knob 39, the disc plates 20, 20 are rotated, and the disc plate 2
The main brush 28 is moved up and down via a support shaft 23 supported at 0 and 20. Also, 4
0 is a stand attached to the lower end of the center panel 15a, and the stand 40 consists of a coaxially rotating pedal 40a and a support roller 40b.
The pedal 40a and the support roller 40b are provided with a spring 41.
It is always biased so that it is in an upwardly pulled state. By pressing the pedal 40a when adjusting the distance between the aircraft 1, the support roller 40b rotates downward, and the wheels 21, 21
At the same time, the rear part of the aircraft 1 can be lifted up.

5 and 6 are drawings showing the second embodiment, in which among the supports 29, 29 fixed to both ends of the support shaft 23, a plurality of support rods 42... are protruded at regular intervals,
A flocked rod part 43 for installing the brush 32 is installed horizontally between each support rod 42. Also, support for the other party 29
A pipe-shaped flocked rod portion 44 for implanting the brush 32 on the outer surface of the support rod 42 is provided in a protruding manner to face the support rod 42. Then the slits 44', 44' are opened. Then, with the flocked rod portions 43 protruding from the slits 44', 44', each of the flocked rod portions 44...
By loosely fitting the support rods 42 into the brush body 30', the brush body 30' is formed to be expandable and contractible along its width direction.

Effects of the invention The invention is constructed as described above, and as described above, a main brush chamber is provided at the rear of the fuselage whose width can be adjusted, and the main brush chamber is formed to be expandable and retractable. The support shaft is mounted horizontally, supports are fixed to both ends of the support shaft, and the brush body, which is extendable and retractable, is mounted on the shaft, so that it can be adjusted to fit the width of the aircraft. Now you can change the width of the brush body.

This makes it possible to obtain a cleaning width suitable for the work place, for example, when cleaning a wide place or a narrow passage.

[Brief explanation of the drawing]

Figures 1 to 4 are drawings showing the first embodiment of the present invention, in which Figure 1 is a side view showing the entire sweeper, Figure 2 is an exploded perspective view thereof, and Figure 3 is an external appearance of the hopper. FIG. 4 is an exploded perspective view of the main brush. Also, Figures 5 and 6 are
FIG. 5 is an external perspective view of the main brush, and FIG. 6 is an exploded perspective view thereof. 1... Airframe, 1A... Frame body, 1B... Main brush chamber, 2a... Center frame, 2
a'...Rising part, 2b...Side frame, 3...
...gear mechanism, 4...pinion, 4'...drive shaft,
5... Rack, 6... Caster, 7... Sprocket, 7'... Rotating shaft, 8... Handle, 9...
... Sprocket, 9' ... Rotating shaft, 10 ... Chain case, 11 ... Chain, 12 ... Bracket, 13 ... Handle rod, 14 ... Side plate, 15 ... Brush cover, 15a ... Center panel, 15b...Side panel, 16...Gear mechanism, 17...Pinion, 17'...Drive shaft, 1
8... Rack, 19... Axle, 20... Disc plate, 21... Wheel, 22... Gear, 23...
...Spindle, 24a, 24b...Slit, 25...
Bearing, 26...Gear, 27...One-way clutch, 28...Main brush, 29...Support, 30, 30'...Brush body, 31...Hollow drum, 32...Brush, 33...Flocking rod section , 34
...Ring, 35...Hopper, 35'...Sweep opening, 35a...Center part, 35b...Side part, 36...Pin, 37...Flange, 38...
...Arm, 38'...Bolt, 39...Knob, 4
0...Stand, 40a...Pedal, 40b...
Support roller, 41... spring, 42... support rod,
43... Hair-planting stem part, 44... Hair-planting stem part, 44'...
...Slit.

Claims (1)

[Scope of utility model registration request] A main brush chamber is provided at the rear of the machine whose width interval can be adjusted, and a support shaft that supports a cylindrical brush body is mounted in the main brush room in the width direction. In a sweeper in which a brush body is rotatably driven through a sweeper, the support shaft is formed to be extendable and retractable, and supports are fixed to both ends of the support shaft. A main brush expansion/contraction mechanism in a sweeper, which is constructed by attaching a base of a cylindrical brush body which is divided into two parts and is extendable and retractable along the width direction.