JPS60142809A - Side groove brush - 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] The present invention relates to a gutter brush for a street sweeper.

Gutter brushes, as the name suggests, are used in street cleaners to clean street gutters. Gutter brush bristles are typically made of relatively long, hairbin-shaped stranded steel wire. The hairpin bends of each strand are used to secure the strand to the support. The segments may be provided with supports to facilitate attachment of new bristles during bristles replacement. The support is fixed to the support plate and the brush is driven through the support plate. Gutter brushes are subject to severe wear because they must scrub the surface being cleaned in order to be effective. It is not uncommon for steel bristles to wear down into ineffective blobs over a very short period of time. This short bristle life of gutter brushes necessitates frequent replacement of the bristles. The requirement to frequently replace gutter brush bristles requires that gutter brush replacement be relatively inexpensive. As a result, it has been conventional practice to use something like a segmentable disc-shaped plywood support through which the bristle bundles for gutter brushes can be passed. The mouth supports are supported by permanent support plates, with a total of three supports forming a brush. When the bristles wear out, the entire assembly, excluding and including the support, is discarded. However, in use, wood is not a fully satisfactory support because it easily cracks under cleaning loads. Furthermore, wooden supports are difficult to install.

Considering the conditions under which gutter brushes are used, it is clear that removal of the bristles is a problem. For example, corrosion, dirt, sharp buttons, and hardened dust make traditional fasteners, such as bolts, extremely difficult and uncomfortable to remove. Another problem with using fasteners like bolts is that
It is common for the pol 1- to occupy space at the expense of the bristles, thereby reducing the cleaning area of the brush. Furthermore, while tightening bolts, heavy and inconvenient segment
must be held in place.

Various techniques have been devised to improve the replaceability of gutter brushes and to maintain economical brush retention.

One attempt was to use a support plate with suspended inverted T-shaped mounts to support the individual components.

In this case, the segments themselves are prevented from moving radially relative to the support plate by the bolts. One of the problems with this device is that it also relies to some extent on undesirable bolted attachments of the segments. Additionally, the bolts occupy space that could otherwise be occupied by the bristles. Other methods have also been attempted to reduce the number of fasteners required by using a bar as a weight support means between the support plate and the segment. However, these methods have not been entirely satisfactory since, for example, bolts are still used.

Therefore, the present invention is economically produced, can be carried out,
Also, without sacrificing brush bristles for fixtures,
It is an object of the present invention to provide a gutter brush structure featuring segments and a segment holder that allows for very easy replacement of the brush. Generally, the present invention contemplates a plurality of segment holders permanently supported by a support plate driven and rotated by the street sweeper.

Each holder includes means for supporting and manipulating a segment of the brush and means for releasably rotating the segment into the holder. This segment is disposable. The permanent holder supports segments positionable along the periphery to transfer the rotating brushing load to the holder. As a result, the segments can be lightweight and inexpensive. Preferably, the support means includes a front edge disposed radially outwardly of the holder, said front edge being in the form of an inwardly rolled lip, disposed outwardly of the segment and radially outwardly disposed on the holder. The segment is supported by engaging a flange facing toward the segment.

Preferably, the flange of said segment forms the upper wall surface of a pocket by which said edge is received. The support means further includes a projecting sloped wall section inside the edge and perpendicular to a radius from the center of rotation of the holder. This wall abuts the rear end of the J resegment in a tight fit to intimately engage the edge and flange. A locking latch extending through the sloped wall holds the segment in place and supports the east exit at the rear end of the segment. Edge and pocket supports facilitate segment attachment. The bristles direct the segment's center of gravity radially outward from the edge, and the segment is latched onto the edge and naturally enters and stays in place.

Installation is completed by simply securing the segments in place with the fixing fasteners.

The invention also includes means for rotationally coupling each segment to its holder. Such means include a support flange on the edge of the holder and a shallow V-shaped segment such that the holder and the segment engage in a direction in which power is applied from the street clear ill to the segment through the holder. be. The shallow figure 7 shaped flange also reduces the need for close tolerances between the segment and the holder. ■The shaped part allows power to be transmitted in either direction,
It also provides a convenient means of positioning. However,■
Instead of a glyph-shaped side, the sides may have a different shape, for example arcuate, as long as there is an engagement relationship between them. The rotary coupling means may include segment lugs that are received in notches at the top of the figure 7 shape of the edge of the holder and engage the edge. If provided with lugs, the pocket is divided into two pockets and the edge of the holder is also divided into two edges, one edge facing each pocket. The end of the pocket remote from the top of the figure 7 shape is closed by the end wall of the segment, further rotatably coupling the segment and holder to each other.

Furthermore, the internal inclined wall of the holder, perpendicular to the radius passing through the center of rotation of the support plate, engages over a considerable length with the auxiliary flange of the segment, creating a kind of engagement in the direction of rotation of the support plate. Preferably, the fastening means of the holder comprises a spring fastening which is tightened by a load. The preferred fastening means includes a latch, which has at least one wooden leg and which extends radially inwardly of the inclined wall. The vertical wall of the holder is fitted into a fixed position located on the outside in the radial direction.

That is, the leg is elastically fixed in its fixed position in the space between it and the inclined wall. Both the sloped wall and the vertical wall are provided with slots for receiving latches. The vertical wall throwers flex their legs when the latch is released. Preferably, the latch includes at least two locking legs having approximately equal resistance to bending in opposite directions from the major plane of the latch. With opposing legs, the tendency of the latch to rotate due to deflection of one leg is avoided as the bending loads are offset. Preferably, means such as an impingement and a key are provided for determining the open and locked positions of the latch. If desired, an auxiliary pin may be used between the support plate and the latch to ensure that the latch is locked. The latch is provided with means, such as a hole, for inserting a tool, such as a rod, which is manipulated to open and close the latch and open or secure the segments. As mentioned above, the segment is lightweight and inexpensive because the outer and inner radial edges of the segment substantially engage the holder in place so that substantially the entire cleaning load is carried by the holder. It can be made into something disposable. The latch maintains this engagement between the holder and the segment by loading the segment. Preferably, the holder comprises at least one support pad on its top plate against the top of the segment. This pad defines a space outside of it in which the segments can flex in response to cleaning and holder loads.

The segment of the present invention has a plurality of vertical holes defined by a wall surface and is configured to receive a hairpin or square-shaped bristle bundle so that the bent portion of the bristles in each vertical hole is supported by the wall surface. As noted above, the preferred front edge of the segment is very flat V-shaped as shown, providing a mating plunge that engages the inwardly curved V-shaped edge of the holder; Drive the segment to rotate. The vertically extending guide lug is adapted to engage the end of the intermediate notch in the edge of the holder. The guide lug also provides a rotational connection between the holder and segments 1-.

The front edge of the segment is provided with a pocket for receiving the edge or curl of the holder. The end wall of segment 1 ~ is blurry 1
- close the outer end and the guide lug close the inner end. If desired, outwardly extending bumpers can be provided on the segments to protect the permanent holder or support plate from damage by stones or the like.

The walls between the vertical holes through which the bristle bundles pass are flexible to avoid fatigue of the bristle bundles. One of the important features of the segment of the present invention is that it adapts to the dimensional tolerances of the holder to help it bend elastically in the loaded holder and lock itself in place. be. The trailing edge of each segment is flat and not perfectly perpendicular to the radius of the circular annulus in which segments 1~ are located when the segments are attached to form the gutter brush. With respect to the perpendicular, this rear edge is slightly inclined and the clamping forms a surface. The cooperating part of the holder is secured with the help of a latch.
Push the segment into position against this sloped rear edge. The segments for the bristle bundle are preferably made of an inexpensive plastic such as high-density polyethylene, which has a sufficiently high modulus of elasticity to bend elastically and hold the segment securely in place in the holder. . The plastic must also be sufficiently strong to withstand abuse.

These and other features, properties, and advantages of the invention will become more apparent from the following claims, and the drawings.

The present invention will be described in detail with reference to the embodiments illustrated below.
FIG. 1 generally shows a rotary brush for road gutter constructed according to the present invention.

The rotating brush body is located at the lower end of the drive shaft 12 which is attached to the support plate 14 by a flange 16 and a fixture 18. The drive shaft 12 is, of course, coupled to the rotating prime mover of the street sweeper (human flesh). The drive shaft also presses the rotating brush against the road surface to be cleaned and can move in response to the wear of the bristles of the brush. Attached to the plate 14 are a plurality of circumferentially arranged segment holders, one of which is generally designated by the reference numeral 20. The holders 20 are permanently attached to the support plate 14 by welding or the like. The bristles of the rotating brush are supported by a plurality of segments, segments 1 to 1 are periodically removed and discarded to renew the bristles.One of the replaceable segments is designated 22. One holder is provided for each segment.As will be explained later, the holder 20 and segment 22 are designed so that most of the load during cleaning is applied to the holder 20. This allows the segment 22 to be manufactured at low cost so that it can be discarded together with the worn bristles.On the other hand, the holder 2o and the support plate 1'4
There is also a permanent note. Segment 22 and holder 2
The number of o changes depending on the rotating brush. For example, depending on the diameter of the support plate 14, the number can be 9 or 11. The boulder 20 and the segments 22 are made small so that they can be easily attached to support plates 14 of different sizes.

As shown in FIGS. 2, 3, 4, and 5, the holder 2o of the present invention includes an upper plate portion 24 that is a flat plate as a whole. The outer radial end boundary of the upper plate part 24 is provided with a guiding edge 26 located radially outwardly over substantially its entire width. This edge 26 is rolled back to form a radially inwardly facing hook-like flange 28. The flange 28 is again bent back outwards and reinforced. An intermediate cutout 3o is provided between the ends of the edge 26 of the holder 2°, which receives the guide lug 32 of the segment 22.

The tip of the holder is generally a shallow V shape to greatly expand the V shape.
character) has a shape. An inclined wall 36 that slopes downward and protrudes from the inner radial end of the upper plate portion 24 is connected to the horizontal connecting portion 38 . The slope of the sloped wall 36 is, for example, at an angle of 8 degrees with respect to the vertical plane, and is configured to allow the segment 22 to be press-fitted. The inner end of the horizontal connection part is further connected to a vertical wall 40 that extends vertically upward. The inclined wall 36, the vertical wall 4° and the horizontal connection 38 form a U-shape for attaching a latch 42 for fixation of the segment 22.

The latch 42 is horizontally movably supported in a pair of slots 44 and 46 provided in the inclined wall 36 and the vertical wall 4o. Slot 46 has a relatively narrow configuration. The latch 42 consists of three legs that snap open and lock. When no force is applied, the pair of outer legs 47 and 48 are slightly upwardly concave, and the central leg 49 is downwardly concave. latch 42
moves from the open position to the locked position, that is, the third
Upon movement from the illustrated position to the FIG. 4 position, each leg is released from the restraint of the slot 46 and returns to its preloaded condition. Releasing the latch 42 in this position requires a considerable force to be applied to the latch 42 since the legs must be elastically deformed. In this 90-close position, the latch 42 is held generally horizontal by the central leg 49 and a pair of opposing outer legs.

A snapping effect is occurring. Importantly, in the locked position of the latch 42 each leg exhibits a steep rise, for example 45 degrees, relative to the slot 46. When the latch 42 is opened, this slope of rise tends to counteract the opening. Once the latch 42 passes this steep slope, the slope reverses and becomes more gradual, providing a slight aid in opening. However, the leg 47. aa: Since there is a frictional resistance between 49 and slot 46 over substantially the entire length of the non-steep slope, an external force is always required to move latch 42 into the locked position shown in FIG. When locking the latch 42,
The sloped section has the opposite effect. A gentle slope opposes the lock operation, and a steep slope supports the lock operation.

In the locked position, the latch 42 resists steep slope release.
to keep it locked. Even in the locked position, there is some resistance between the legs of latch 42 and wall boundary slot 46 to firmly hold latch 42 in place and prevent wear. The last portion 50 of the latch 42 is beveled upward and is configured to simulate the bead 51 of the segment 22.

On the other hand, a cam surface 53 is formed on the lower surface side of the bead 51 and is inclined downward and radially outward. The latch is also heat treated.

The latch includes an impingement portion 52,54 that abuts the vertical wall 40 to limit movement of the latch radially inward toward the center of rotation of the gutter brush and prevents the abutment portion 50 from falling out of the slot 44. ing. Movement in the opposite direction is restricted by segment 22. However, a cota pin 55 may be provided to prevent the latch from being pulled out of the holder 20.

As best seen in FIG. 5, an auxiliary bin 57 may be provided to ensure that the latch 42 fully secures the segment 22 in place. If the latch 42 is out of position, the three holes 59 provided in the latch, the support plate 14, and the horizontal connection part 38 of the holder 20 will not line up, so the auxiliary bottle 57 will not align with the holes 59. Become. The top plate portion 24 of the boulder 20 has recesses 56,58 which provide support pads for the segments 22, as will be described below.

Support between the segments 22 and the top plate 24 can also be provided by pads on the segments 22. latch 4
2 is provided with a light transmitting hole indicated by reference numeral 60, and receives a rod for opening and closing the holder 20. This rod is numbered 6 in Figure 4.
It is indicated by 1. The support plate 14 has an opening 62 and the rod 6
Accommodates 1. The rod 61 acts against the wall of the light transmitter 60 as leverage by the support plate 14 and moves the latch 42 radially inward or outward from the center of rotation of the rotating brush to remove or attach the segment 22. be able to.

In plan view, the holder 20 has 360 of the bristles of the brush.
They are wedge-shaped so that they can be placed next to each other to form a degree ring. The holder 20 and the segment 22 are both sufficiently small so that the supporting plate 1 of different diameters can be used.
4, and can provide bristles in a range of 360 marks. The lateral sides of the segments 22 extend slightly laterally outwardly than the outside of the holder.

Segments 1 to 22 are shown in Figures 3 through 6.

The segments are made from a plastic material such as high-density polyethylene as an integral part. As will become more apparent later, the segments 22 mounted within the holder 20 are elastically deformed to seat them securely. The elasticity of segment i~ and segment 2
2 and the upper plate portion 24 of the holder 20.
The space provided by allows the segment to be successfully mounted in the holder even with large tolerances between the holder and the segment. Generally, segment 2
2 is a main body portion 7 having a plurality of vertical holes 72, 74 and 76;
Consists of 0.

The wells are each configured to open into a pair of downwardly directed and radially outwardly extending passageways through which the brush bristles extend. In Figures 3 to 6, two of the two pairs of passages are designated 80 and 82.
There is a pair of passages. The leading edge of the channel is chamfered as shown at 84 to facilitate the placement of the bristles. The passages are provided in two arcuate rows, and two rows of radially arranged annular bristles can be installed on the finished gutter rotary brush consisting of a plurality of segments 22h1.

The front upper side of the main body 70 has a wide V-shape as a whole to adapt to the shape of the boulder 20, and cooperates with the edge 26 of the holder to fix the segment 22 therein.

The figure-7 shaped mating surfaces on holder 20 and segment 22 couple them together and mutually secure them in place.

The shapes of the main body 70 and the holder 20 described here may be shapes other than V-shape, for example, arc shapes, but if they are made into a 7-shape, a considerable tolerance can be provided between the holder and the segment. It also becomes very economical to manufacture. The distal end of the holder includes a pair of radially extending external flanges 86.
It is formed by A pair of pockets 87 are defined at the top by flanges 86 and receive flanges 28 on edge 26 of the holder. The circumferential ends of the pockets 87 are closed by the radial end walls 89 of the segments.

These end portions 89 extend slightly radially beyond the flange 86 in order to protect the edge 26 of the holder from stones and the like, and also to strengthen the rotational connection between the holder and the segments. . In the correct position, the edge 26 of the holder
The circumferential end of is located inside the end wall portion 89 of the segment;
The end wall portion 89 can be supported. Guide lugs 32 are between pockets 87 and form the inner ends thereof.

This guide lug 32 is intended to engage the wall of a notch or recess 30 in the edge 26 of the boulder. As previously mentioned, the guide lugs 32 position the segment relative to the holder and reinforce the rotational connection between the holder and the segment. The rotational connection between the holder and the segment along the leading edge is achieved by the interference between the figure-7 shaped flange of the segment and the V-shaped edge of the boulder, the guide lug in the central notch of the holder, and the It can be provided either by an end wall of a segment supported by an end wall of a leading edge, or a combination thereof. When the segment is driven by the holder, one side or side of the figure-7 mating surfaces will engage unless prevented by the guide lugs or end walls being tightly engaged with the holder. .

The segment and the holder are coupled in the direction of rotation from ↓ to ensure that the abutting surfaces are tightened during cleaning along the band of loose fit between the bottom beam 51 of the segment and the inclined wall 3G of the holder. be done.

A pair of inwardly extending, generally T-shaped support bosses 88 and 90 engage support pads of holder 2o defined by recesses 56 and 58 in the top plate of the holder. A guard or bumper 92 extends radially outwardly from the body of the segment and protects the holder and support plate forming the durable mounting section λ of the rotating brush from being hit by stones or the like. Six pairs of bristle-receiving passageways 80, 82 support the legs of a bundle of U-shaped steel bristles, such as the preparation bristles 93 shown in the third cape. Part is passage, 82
radially between the passageways, such as the web 94 between the refill passageway 96 and the refill passageway 96. The walls of the segments bounding and defining the bristle passages are relatively thin and flex slightly under the loads of cleaning operations, reducing fatigue weakening of the bristles. Segment bee 151 is a segment. In order to extend the width and to reinforce the slope of the sloped wall 36 of the holder, it is provided with a rear surface portion that comes into close contact with the sloped wall 36 of the holder. As shown in boxes 1 to 5 in FIG. Due to this gap, the segment is elastically bent into a holder according to the tolerance and is firmly attached. As clearly shown in FIG. 4, the bead 51 is attached to the front side 50 of the
The portion indicated by the symbol 1o1 is deformed upward at the angle. This elastic deformation and the sloped surface of the sloped wall 36 cause the segments 1 to engage the boulder over the entire width of the latch 42 and the width of the forward surface of the segment. The internal semi-transparent end face of the segment 22 (when attached to the rotating brush) is
It is defined by beads 51 extending at right angles to the radius of curvature of the two rows of bristle-receiving channels. When the segment 22 is installed on the hole 20, the bead 51
Its length is extended and pushed into contact with the inclined wall 36.

The bead 51 is connected to the exterior of the segment via a web 102, which has a vertical hole 72 at its outer edge;
It is the boundary of the inner wall surface of 74.76. The holder and segments 1 to 1 are constructed so that substantially all of the load during cleaning can be received by the holder. That is.

The relationship between the segment and the holder is such that there is substantially no free and unsupported portion of the segment's longitudinal portion, and the holder holds the segment along substantially all of its inner and outer radial sides.
It is configured to support along the section. A gap may be provided between adjacent segments on the circumference due to tolerances. Therefore, each holder and segment is structurally distinct from the other members.

When it is desired to install a new segment with new bristles, the rod 61 is inserted into the appropriate one of the openings 62 in the support plate 14 and into the opening or hole 60 of the latch 42 to bring the latch into the released position. The latch leg is then deformed and passes through the narrow slot 46 to the released position shown in FIG. The segment can then be easily removed by rotating clockwise in FIG. To install a new bristle segment, the pocket 87 of the segment can be inserted into the flange 28 of the edge 26. The center of gravity of the new segment and bristles is swung up by the rotation of the rotating brush, and the front edge 50 of the latch 42 allows the segment to be fully advanced into position for locking.
With worn pigments and bristles, the center of gravity will not act to seat the segment in the holder as well.

In the case of inserting a new set of bristled segments, the guide lugs 32 of the segments are inserted into the intermediate notches 30 of the holder.
must match. It is desirable to remove all segments before updating any segment.

It should also be noted that the use of the latch with the rod 61 pivoted on the support plate provides considerable mechanical advantages in moving the latch to either the locked or released position.

Although the present invention has been described with reference to one preferred embodiment, the spirit and scope of the claims are not necessarily limited to this description. As described above, the present invention satisfactorily achieves the object of the present invention.

Preferred embodiments of the present invention will be described below.

Each of said latches is raised between a first position in which the associated segment may be disengaged from the boulder and a second position underlying the segment, and said repositioning is radial. Gutter brush according to the claims, characterized in that it lies within the passageway.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a rotary brush for road gutter constructed according to the present invention viewed from above, FIG. 2 is a plan view of a holder with a segment according to the present invention, and FIG. 3 shows how the latch of the holder holds segment 1-. Figure 4 shows the latch securing the segment in place, with the segment being slightly deformed so that the legs of the latch FIG. 5 is a longitudinal sectional front view substantially similar to FIG. 3, with the parts snapped into their fixed positions, and FIG. 5 is a view substantially similar to FIG. Fig. 6 is a top plan view of the segment according to the present invention. 10...Rotating brush body 12... Drive shaft 14.
...Support plate 20...Holder 22...Segment 1~
26... Edge 32... Guide lug 42... Latch member 51... Bead 5G, '58... Recess forming support pad 87... Groove 93... Bristle patent applicant F. L Musi Corporation Figure 1 Cause 6 Cause 2 Cause 9 Figure 3

Claims (1)

[Claims] (1) A segment for a gutter brush, wherein the body of the segment 22 is made of an elastic material, and extends from the body at an oblique angle with respect to a cross section passing through the body along an arcuate path around the entire length of the body. a plurality of bristles 93 extending and fixed in the direction, the outer side of the body being spaced laterally from the arcuate path in one direction within the cross section, and the inner side thereof being spaced laterally from the arcuate path in one direction within the cross section; spaced laterally from said arcuate path in a direction opposite said direction, and further has an outwardly directed groove on the outside of said body for receiving an edge of a holder supporting said segment. a plurality of heats 51 located on the inner side of the body, the lower surface of which is engaged by a latch member 42 that moves towards the outer side of the body to firmly engage the segment with the holder; (I) a support plate 14 driven and rotated by a rotary power source of a street sweeping machine; (III) a holder disposed and fixed in a circumferential manner under the support plate; a support for supporting each of said segments comprising an outwardly inwardly curved edge 26 and an inwardly located latch member 42 selectively operable between open and closed positions; said edge engages the groove 87 of said segment 22 associated with said segment 1', said latching member moving towards the outside of said body of said segment to engage the underside 51 of said segment 1~. A gutter brush comprising: a plurality of segment holders which are brought together to firmly engage the segments 1 to the holders;