CN211834270U - Mop cleaning bucket - Google Patents

Abstract

The utility model relates to a mop cleaning barrel, it includes the ladle body, set up in belt cleaning device in the ladle body, belt cleaning device including have the guide effect slide rail mechanism, set up in slide rail mechanism one side scrape dirty mechanism and fix slide rail mechanism's last fixing base, it has seted up the socket to go up the fixing base, it includes the basin to scrape dirty mechanism, the basin by it encloses with a tank frame to go up the fixing base, be equipped with the water injection notch that extends to the outside on the tank frame, water injection notch front end is equipped with a valve plate. The utility model discloses a valve plate design of mop washing bucket is favorable to scraping hair scraper blade department at the self-adaptation and forms the cascade, washs evenly, thoroughly.

Description

Mop cleaning bucket

Technical Field

The utility model relates to a cleaning device technical field, in particular to mop cleaning barrel.

Background

Mops and mop buckets are common cleaning tools and are used to clean and dewater mops. At present, most mop buckets in the market adopt a bucket (basin)) water containing mode to be used for cleaning mops, water in the mop buckets is repeatedly used, the mops are still not cleanly washed, the mops need to be cleaned by changing water, the mops can be cleaned by 2-3 buckets of water, the great waste of water resources is caused, meanwhile, the labor load is increased, and the effect is not satisfactory.

The pull is easy dead when current mop washs, if thoroughly sanitized, must wash mop one side earlier, rotatory 180 washs again and just can thoroughly sanitize, and some products are because of the light in weight of bucket, and do not have fine fixed mode in addition, lead to the phenomenon that the ladle body inclines or emptys to appear in the cleaning process. In addition, in the cleaning process of the existing mop cleaning barrel, clear water flows out of the water tank and cannot form an even water curtain, when the mop cleaning barrel is used for cleaning a mop, some local water flows are rapid and thorough, some local water flows are slow and cannot be cleaned completely,

in view of this, the utility model provides a mop cleaning barrel with ideal cleaning effect to overcome the partial problems existing in the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mop cleaning barrel of cleaning performance ideal to solve the partial problem that exists among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a mop cleaning barrel, its include the ladle body, set up in belt cleaning device in the ladle body, belt cleaning device including the slope have the guide effect slide rail mechanism, set up in slide rail mechanism one side scrape dirty mechanism and fix slide rail mechanism's last fixing base, it has seted up the socket to go up the fixing base, it includes the basin to scrape dirty mechanism, the basin by it encloses with a tank frame to go up the fixing base, be equipped with the water injection notch that extends to the outside on the tank frame, water injection notch front end is equipped with a valve plate.

The groove frame comprises a longitudinal groove frame body and side grooves formed by vertically extending two ends of the groove frame body, the valve plate is fixed on a bottom column, and the bottom column is fixed at the bottom of the groove frame body.

The water injection notch is arranged on the groove frame body.

The tank frame body has peripheral panel and interior bounding wall, the water injection notch with the peripheral panel junction is equipped with the arcwall face.

Go up socket inner wall downwardly extending and form the projecting portion, be equipped with the washing rivers hole that runs through preceding, rear surface on the projecting portion, the projecting portion rear surface vertically be equipped with the guide slot of washing rivers hole intercommunication, guide slot the place ahead have earlier on go up the fixed scraper blade that stretches in the socket suddenly, set up a plurality of dehydration holes that run through upper and lower surface on the fixed scraper blade.

Scrape dirty mechanism still including connect in the self-adaptation of basin bottom is scraped the hair scraper blade and is fixed in the self-adaptation scraper blade of self-adaptation feather scraper blade bottom, be equipped with a plurality of first limbers on the self-adaptation feather scraper blade, be equipped with on the self-adaptation scraper blade with the communicating second limbers hole of first limbers hole, first limbers hole with the dehydration hole is linked together.

The sliding rail mechanism comprises two sliding rails which are parallel to each other and a plurality of pulleys arranged on the sliding rails, and the pulleys are fixed on the sliding rails through a pulley base.

The slide rail comprises a slide rail main plate and slide rail side plates perpendicular to the two sides of the slide rail main plate, a plurality of fixing grooves are formed in the slide rail main plate, and the pulley base is fixed in the fixing grooves.

The clamping device is characterized in that clamping strips are arranged at two ends of the fixing groove, a concave clamping groove is formed in the side plate of the sliding rail, a convex strip is arranged in the concave clamping groove, the convex strip extends towards the inside of the fixing groove from the outer surface to form a clamping part with an inclined outer surface, clamping holes are formed in two sides of the pulley base, an inclined groove is formed in the rear of each clamping hole, and the inclined groove is matched with the clamping part.

The pulley base comprises a base and two groove plates formed by the base in a forward parallel extending mode, two opposite bent portions are formed by the forward extending of two ends of each groove plate, the two opposite bent portions surround the sliding groove, and the pulleys move in the sliding groove.

Compared with the prior art, the beneficial effects of the utility model are that: the front end of the water injection notch is provided with a valve plate, and clear water injected from the water injection notch is divided by the valve plate and flows to two sides to prevent the water from flowing through the water injection notch; the clear water in the basin flows to first limbers through washing rivers hole, dehydration hole, is favorable to forming the cascade in self-adaptation scraping hair scraper blade department, washs evenly, thoroughly.

Drawings

FIG. 1 is a schematic view of the overall structure of the mop cleaning bucket of the present invention;

FIG. 2 is a schematic view of the disassembled structure of the mop cleaning barrel of the present invention;

FIG. 3 is a schematic structural view of a slide rail mechanism of the mop cleaning bucket of the present invention;

FIG. 4 is a schematic view of a part of the cleaning device of the mop cleaning bucket of the present invention;

FIG. 5 is a schematic view of a tank frame of the mop cleaning bucket of the present invention;

FIG. 6 is a schematic view of the structure of the dirt scraping mechanism of the mop cleaning barrel of the present invention;

FIG. 7 is a schematic diagram of the adaptive screed configuration of FIG. 6;

FIG. 8 is a schematic view of the structure of the upper fixing base of the mop cleaning bucket of the present invention;

FIG. 9 is a schematic view of the structure of the upper cover of the mop cleaning bucket of the present invention;

FIG. 10 is a schematic view of a fixing bracket of the mop cleaning bucket of the present invention;

FIG. 11 is a schematic view of another angle structure of the mop cleaning barrel of the present invention

FIG. 12 is a schematic view of a slide rail structure of the slide rail mechanism shown in FIG. 3;

fig. 13 is an enlarged structural view of a fixing groove in the slide rail in fig. 12;

FIG. 14 is a schematic view of a pulley structure of the slide rail mechanism of FIG. 3;

fig. 15 is another angle structure diagram of the pulley of fig. 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 to 15, the present invention relates to a mop cleaning barrel, which comprises a barrel 10, a cleaning device 20 disposed in the barrel 10, an upper cover 30 assembled on the upper end of the barrel 10, and a fixing support 40 for fixing the barrel 10, wherein the mop cleaning barrel is used for cleaning a flat mop 50, and the flat mop 50 includes a mop rod 51, a flat mop head 52, and a connecting member 53 connecting the flat mop head 52 and the mop rod 51.

Referring to fig. 2, the tub 10 includes a front end surface 11, a rear end surface 12 parallel-opposed to the front end surface 11, and two side surfaces 13 perpendicularly connected to both sides of the front end surface 11 and the rear end surface 12. The lower ends of both side surfaces 13 are formed with an inverted U-shaped recess 131 recessed inward, and the recess 131 is formed with a circular drain opening 132 protruding outward, the drain opening 132 penetrating the outside and the inside of the tub 10, the drain opening 132 facilitating insertion of a drain hose. The design of the recessed portion 131 prevents the front end of the drain opening 132 from protruding beyond the side surface 13, thereby reducing collision. The upper end of the rear end face 12 is provided with a pair of U-shaped cutting sleeves 121 for assembling the fixed bracket 40. Referring to fig. 11, the suction cups 100 are fixed at four corners of the bottom surface of the tub 10, and the suction cups 100 are used for fixing the tub 10 to the ground, so that the fixing effect is good, and the phenomenon that the tub 10 is toppled due to stress is prevented. To increase stability, the suction cup 100 may be additionally provided on the bottom surface of the tub 10.

Referring to fig. 2, the cleaning device 20 includes a slide rail mechanism 21 with a guiding function, a dirt scraping mechanism 22 disposed inside the slide rail mechanism 21, and an upper fixing seat 23 for fixing the slide rail mechanism 21. Referring to fig. 3, the slide rail mechanism 21 includes two slide rails 211 parallel to each other and a plurality of pulleys 212 disposed on the slide rails 211. The pulley 212 is fixed to the slide rail 211 by a pulley base 213. The upper end of the slide rail 211 is provided with a holding plate 214 extending horizontally, and the holding plate 214 is fixedly connected with the upper fixing seat 23 through bolts. The lower end of the slide rail 211 is fixed with a slide rail supporting seat 215 which supports the slide rail not to deform under stress. The slide rails 211 are inclined at an angle theta relative to the vertical plane, wherein theta is more than 5 degrees and less than 15 degrees. The slide rail 211 inclines relative to the vertical surface, changes the direction of the water falling vertically, and enables the clean water to fully act on the surface of the flat mop 50, thereby increasing the cleaning effect.

Referring to fig. 12 and 13, the slide rail 211 includes a slide rail main plate 2111 and a slide rail side plate 2112 perpendicular to both sides of the slide rail main plate 2111, a plurality of fixing slots 2113 are provided on the slide rail main plate 2111, both ends of the fixing slots 2113 are provided with a locking strip 2114, the locking strips 2114 at both ends extend to the surfaces of the two slide rail side plates 2112, and a gap 2115 is left between the locking strips 2114 of the same slide rail side plate 2112. The slide rail side plate 2112 is provided with a concave card slot 2116, a convex strip 2117 is arranged in the concave card slot 2116, and the convex strip 2117 extends from the outer surface to the fixed slot 2113 to form a clamping part 2118 with an inclined outer surface.

Referring to fig. 14 and 15, the pulley base 213 includes a base portion 2131, a slide groove 2132 provided at the front end of the base portion 2131, a locking hole 2133 provided on both sides of the base portion 2131, and an inclined groove 2134 provided behind the locking hole 2133. The base portion 2131 extends forwards in parallel to form two groove plates 2135, two ends of each groove plate 2135 extend forwards to form two opposite bent portions 2136, and the two opposite bent portions 2136 enclose the sliding groove 2132. The pulley 212 is movably disposed in the sliding groove 2132, and the pulley base 213 is fixed in the fixing groove 2113. During cleaning, the pulley 212 moves in the chute 2132. The inclined groove 2134 mates with the catch 2118.

Referring to fig. 4, the scraping mechanism 22 includes a water tank 221, an adaptive scraping blade 222 connected to a bottom end of the water tank 221, and an adaptive scraping blade 223 fixed to a bottom end of the adaptive scraping blade 222. Basin 221 is enclosed by last fixing base 23 and a tank frame 224, see fig. 5, tank frame 224 includes lengthwise tank frame body 2241 and by the perpendicular side groove 2242 that extends formation in tank frame body 2241 both ends, extend to the outside in the middle of tank frame body 2241 and form semicircular water injection notch 2243, water injection notch 2243 front end is equipped with a valve plate 2244, the clear water that injects by water injection notch 2243 divides the reposition of redundant personnel and flows to both sides through valve plate 2244, prevent that rivers from crossing anxiously, outwards blowout. The slot frame body 2241 is provided with a peripheral plate 2245 and an inner peripheral plate 2246, and the peripheral plate 2245 is provided with a lock catch upright 2247 for connecting the upper fixed seat 23. The valve plate is secured to a bottom post 2448. The water injection slot 2243 with outer surrounding plate 2245 junction is equipped with arcwall face 2449, is favorable to the clear water to reposition of redundant personnel toward water injection slot 2243 both sides toward the clear water, avoids rivers to pass through urgently. The height of the peripheral plate 2245 is greater than that of the inner surrounding plate 2246, and the injected clean water flows over the inner surrounding plate 2246 to the self-adaptive shaving scraper 222. Referring to fig. 6, the adaptive hair scraping plate 222 includes an L-shaped first washing plate 2221 and a first connecting plate 2222 formed by horizontally extending the rear end of the first washing plate 2221 backward, the first washing plate 2221 is provided with a plurality of first water through holes 2223, the front end of the first washing plate 2221 is provided with a plurality of serrated hair scraping heads 2224, and the serrated hair scraping heads 2224 are designed to be advantageous for hair cleaning. First connecting plate 2222 passes through bolt and cell frame body 2241 bottom fixed connection, and cell frame body 2241 bottom still is equipped with blocks strip 2247, blocks strip 2247 and offsets with first connecting plate 2222 and holds, prevents that first connecting plate 2222 is not hard up. The adaptive scraper 223 includes an L-shaped second flushing plate 2231 and a second connecting plate 2232 formed by extending the rear end of the second flushing plate 2231 horizontally backwards, a plurality of baffle plates 2233 are vertically arranged on the second flushing plate 2231, a second water through hole 2234 communicated with the first water through hole 2223 is arranged on the second flushing plate 2231, referring to fig. 7, and a triangular supporting plate 2235 is fixed below the second connecting plate 2232. The utility model discloses in, self-adaptation shaving scraper blade 222, self-adaptation scraper blade 223 adopt PP material integrated into one piece to have elasticity, when the up-and-down motion of dull and stereotyped mop 50, automatic flexible, the automatic adaptation. And the two layers of the dirt scraping plates are washed twice, so that the dirt is thoroughly cleaned. The upper cover 30 and the upper fixing seat 23 are combined into a sealing assembly.

Referring to fig. 8, the upper fixing seat 23 is provided with an upper socket 231, the front end of the upper socket 231 is a U-shaped front docking port 2311 extending forward, the rear end of the upper socket 231 is a rear docking port 2312, and a middle docking port 2313 is arranged between the front docking port 2311 and the rear docking port 2312. Bayonets 2314 are formed in two sides of the front butt joint 2311, screw holes 400 are formed around the bayonets 2314, and the clamping plate 214 is clamped in the bayonets 2314 to form clamping connection. The inner wall of the upper socket 231 extends downwards to form a protruding part 2315, a flushing water flow hole 2316 penetrating through the front and rear surfaces is arranged on the protruding part 2315, a U-shaped guide groove 2317 communicated with the flushing water flow hole 2316 is longitudinally arranged on the rear surface of the protruding part 2315, a fixed scraper 2318 protruding into the upper socket 231 is arranged in front of the U-shaped guide groove 2317, a plurality of dewatering holes 2319 penetrating through the upper and lower surfaces are formed in the fixed scraper 2318, and four arc-shaped reinforcing ribs 23181 are vertically arranged on the upper and lower surfaces of the fixed scraper 2318. The rear interface 2312 is peripherally provided with a snap-fit hole 23121, and the snap-fit posts 2247 are inserted into the snap-fit holes 23121 to form a snap-fit connection. The edge of the periphery of the upper fixing seat 23 is provided with a plurality of locking upright posts 2247 which are used for being connected with the upper cover 30 in a buckling way. Go up socket 231 rear and be equipped with circular via hole 232 that intakes, intake via hole 232 below and water injection notch 2243 relatively, the clear water of pouring into flows to water injection notch 2243 from the via hole 232 that intakes. The slot frame 224 is connected to the lower portion of the upper fixing seat 23 and assembled with the protruding portion 2315, and the locking upright 2247 on the slot frame 224 is inserted into the locking slot 23121 to form a snap connection. The peripheral end surface of the upper fixing seat 23 is provided with an edge strip 233, and the edge strip 233 is matched with the upper cover 30, so that the appearance is attractive.

Referring to fig. 9, the upper cover 30 has a concave surface 31 depressed downward, and the concave surface 31 is designed to prevent water stains from overflowing. The concave surface 31 is provided with a mop inserting hole 32 penetrating the upper and lower surfaces, and the mop inserting hole 32 is used for inserting the flat mop 50 into the bucket body 10. The front end of the mop socket 32 is a U-shaped mop rod socket 321 extending forwards, the rear end of the mop socket 32 is a mop head socket 322, a connecting piece socket 323 is arranged between the mop rod socket 321 and the mop head socket 322, the width of the mop rod socket 321 is smaller than that of the connecting piece socket 323, and the width of the connecting piece socket 323 is smaller than that of the mop head socket 322. The corners of the inner wall of the mop insertion opening 32 are designed to be circular arcs, so that the flat mop 50 is attractive and elegant, and is prevented from being clamped in the drawing process. A water inlet 324 is arranged behind the mop socket 32 for injecting clean water. Hooks 325 are provided on both sides of the upper cover 30 for hanging up the used water outlet pipe. The upper cover 30 is provided at both sides thereof with snap-in portions 326 for facilitating a snap-in connection with the tub 10. The sealing component is provided with a cleaning socket which comprises a mop socket 32 on the upper cover 30 and an upper socket 231 on the upper fixing seat 23.

Referring to fig. 10, the fixing bracket 40 is substantially a frame-shaped structure and is integrally formed, and includes two support rods 41, an upper assembling portion 42 connected to upper ends of the two support rods 41, and a lower assembling portion 43 connected to lower ends of the two support rods 41. In this embodiment, the two struts 41 are parallel to each other, and in other embodiments, the extension lines of the two struts 41 may intersect. Two ends of the upper assembling portion 42 protrude outwards relative to the two support rods 41 to form an extending block 421, the extending block 421 protrudes downwards to form a bracket latch 422, and the bracket latch 422 is accommodated in the clamping sleeve 121 and is used for fixing the fixing bracket 40 to the rear end surface 12 of the barrel body 10, so that the disassembly is convenient. A triangular block is cut at the front end of the upper assembling part 42 to form an abdicating inclined plane 423, both the upper assembling part 42 and the lower assembling part 43 are provided with screw holes 400 penetrating through the front end surface and the rear end surface, and bolts are installed in the screw holes 400, so that the connection stability between the fixing bracket 40 and the barrel body 10 is improved. In addition, referring to fig. 11, the suction cup 100 is fixed on the outer surface of the ferrule 121 for fixing the mop cleaning barrel on the smooth surface, and the suction cup 100 has a large suction force with the smooth surface, so that the fixing bracket 40 does not need to be connected, and the barrel body 10 is prevented from being toppled due to stress. The lower assembling portion 43 extends forward from the bottom end to form a bottom base 431, the bottom base 431 includes a first support plate 4311 and second support plates 4312 alternately distributed with the first support plate 4311, the second support plates 4312 extend forward relative to the first support plate 4311, and a trapezoidal protrusion 4313 is provided on the second support plate 4312, the bottom base 431 is assembled with the bottom of the barrel 10, and the protrusion 4313 is used for being clamped with the bottom of the barrel 10.

The working principle is as follows: when the mop is used, clean water is injected into the water tank 221 from the water inlet 324, the water level of the clean water exceeds the inner surrounding plate 2246 and flows to the dewatering holes 2319 through the cleaning water flow holes 2316, the dewatering holes 2319 are communicated with the first water through holes 2223, the first water through holes 2223 are communicated with the second water through holes 2234, at the moment, the flat mop 50 is inserted into the barrel body 10 through the mop inserting opening 32 and the upper inserting opening 231, the mop 50 is pulled, the flat mop head 52 moves along the pulley 212, the outer surface of the flat mop head 52 is scraped to remove stains through the self-adaptive hair scraping scraper 222 and the self-adaptive scraper 223, meanwhile, the clean water in the water tank 221 flows to the front ends of the adaptive scraping plate 222 and the adaptive scraping plate 223, and the clean water curtain is flushed for flushing again, the above steps are repeated until the flat mop head 52 is cleaned, and the cleaned sewage flows along the flat mop head 52 to the bottom of the barrel 10 and is discharged out of the barrel 10 through the water outlet 132, so that the flat mop 50 is ensured not to leave dirt from top to bottom.

The utility model discloses a mop cleaning barrel has solved the unclean problem of dull and stereotyped mop 50 washing, can be to glass, ground, wall ceramic tile, the furred ceiling, the cleanness of domestic wardrobe, do not keep the sewage spot, fixed scraper 2318, self-adaptation hair scraper 222 and self-adaptation scraper 223 hang the design of dirty strip formula for 3 layers, can combine clean clear water (water that does not pollute) to wash dull and stereotyped mop 50 fast, the action is smooth, can make dull and stereotyped mop 50 once only extend to below the waterline, need not rotatory 180, can once thoroughly do not have the washing dull and stereotyped mop 50 at dead angle, make the family clean health do thoroughly. The slide rail 211 of the utility model is designed to be inclined, so that the direction of the water falling vertically is changed, the clear water can fully act on the surface of the flat mop 50, the cleaning effect is increased, and meanwhile, the inclined slide rail 211 can be pulled to dewater in a way of preventing the mop from being stuck, so that the mop is more labor-saving; the fixing bracket 40 and the suction cup 100 solve the problem that the bucket is toppled due to stress, and the bucket body 10 can be fixed at a certain position without loosening and inclining. The barrel body 10 is small in size, does not occupy space and saves water.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. The utility model provides a mop cleaning barrel, its include the ladle body and set up in belt cleaning device in the ladle body, belt cleaning device including have the guide effect slide rail mechanism, set up in slide rail mechanism one side scrape dirty mechanism and fix slide rail mechanism's last fixing base, go up the fixing base and seted up socket, its characterized in that: scrape dirty mechanism and include the basin, the basin by go up the fixing base and a tank frame enclose, be equipped with the water injection notch that extends to the outside on the tank frame, water injection notch front end is equipped with a valve plate.

2. The mop cleaning bucket of claim 1, wherein: the groove frame comprises a longitudinal groove frame body and side grooves formed by vertically extending two ends of the groove frame body, the valve plate is fixed on a bottom column, and the bottom column is fixed at the bottom of the groove frame body.

3. The mop cleaning bucket of claim 2, wherein: the water injection notch is arranged on the groove frame body.

4. The mop cleaning bucket of claim 3, wherein: the tank frame body has peripheral panel and interior bounding wall, the water injection notch with the peripheral panel junction is equipped with the arcwall face.

5. The mop cleaning bucket of claim 1, wherein: go up socket inner wall downwardly extending and form the projecting portion, be equipped with the washing rivers hole that runs through preceding, rear surface on the projecting portion, the projecting portion rear surface vertically be equipped with the guide slot of washing rivers hole intercommunication, guide slot the place ahead have earlier on go up the fixed scraper blade that stretches in the socket suddenly, set up a plurality of dehydration holes that run through upper and lower surface on the fixed scraper blade.

6. The mop cleaning bucket of claim 5, wherein: scrape dirty mechanism still including connect in the self-adaptation of basin bottom is scraped the hair scraper blade and is fixed in the self-adaptation scraper blade of self-adaptation feather scraper blade bottom, be equipped with a plurality of first limbers on the self-adaptation feather scraper blade, be equipped with on the self-adaptation scraper blade with the communicating second limbers hole of first limbers hole, first limbers hole with the dehydration hole is linked together.

7. The mop cleaning bucket of claim 1, wherein: the sliding rail mechanism comprises two sliding rails which are parallel to each other and a plurality of pulleys arranged on the sliding rails, and the pulleys are fixed on the sliding rails through a pulley base.

8. The mop cleaning bucket of claim 7, wherein: the slide rail comprises a slide rail main plate and slide rail side plates perpendicular to the two sides of the slide rail main plate, a plurality of fixing grooves are formed in the slide rail main plate, and the pulley base is fixed in the fixing grooves.

9. The mop cleaning bucket of claim 8, wherein: the clamping device is characterized in that clamping strips are arranged at two ends of the fixing groove, a concave clamping groove is formed in the side plate of the sliding rail, a convex strip is arranged in the concave clamping groove, the convex strip extends towards the inside of the fixing groove from the outer surface to form a clamping part with an inclined outer surface, clamping holes are formed in two sides of the pulley base, an inclined groove is formed in the rear of each clamping hole, and the inclined groove is matched with the clamping part.

10. The mop cleaning bucket of claim 9, wherein: the pulley base comprises a base part, a sliding groove arranged at the front end of the base part and two groove plates formed by the forward parallel extension of the base part, two opposite bent parts are formed by the forward extension of two ends of the groove plates, the sliding groove is defined by the two opposite bent parts, and the pulley moves in the sliding groove.

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