CN211155558U

CN211155558U - Surface cleaning head for a floor cleaning appliance

Info

Publication number: CN211155558U
Application number: CN201921664857.8U
Authority: CN
Inventors: 卞庄
Original assignee: Suzhou EUP Electric Co Ltd
Current assignee: Suzhou EUP Electric Co Ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-08-04
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses a surface cleaning head for ground cleaning equipment, which comprises a cleaning head shell, wherein the rear part is provided with a rear wheel; rotating the connector; a rotation restraint device including a ratchet wheel provided on the rear wheel and rotatable with the rear wheel, a pawl rotatably provided at a rear portion of the cleaner head housing and adjacent to the ratchet wheel, the ratchet wheel having a plurality of teeth grooves arranged in a circumferential direction, the ratchet wheel having a first rotation region, the pawl having a second rotation region, the first rotation region intersecting the second rotation region and defining an overlap region; the pawl is configured to abut against the rotary connector when the rotary connector is rotated forward to a predetermined position and to be driven to rotate by the rotary connector into the overlapping region when the rotary connector continues to rotate forward, and to slide into a tooth groove when the pawl is driven to rotate into the overlapping region, and rotation of the rear wheel is prevented; when the pawl is driven to rotate beyond the overlap region, the pawl slides out of the tooth slot and away from the ratchet wheel, and the rear wheel can rotate freely.

Description

Surface cleaning head for a floor cleaning appliance

Technical Field

The utility model relates to a cleaning device technical field, in particular to a surface cleaning head for ground cleaning device.

Background

In daily life, the vertical dust collector usually includes scrubbing brush, connecting pipe, host computer and handle, and the scrubbing brush supports through a pair of rear wheel and treats clean subaerial, and the scrubbing brush bottom is provided with the suction inlet, is provided with the suction unit in the host computer, and the scrubbing brush passes through the connecting pipe and links to each other with the host computer to suction inlet, connecting pipe and suction unit air current intercommunication in proper order. The hand-held dust collector can also be connected with the floor brush by the aid of the connecting pipe, so that the structure of the vertical dust collector is combined to handle daily dust collection operation, and the dust collector is convenient and quick. However, since the center of gravity of the upright cleaner is mainly concentrated on the main body, it is a difficult problem for manufacturers to store the vacuum cleaner in a non-working state.

For example, chinese utility model patent CN102188189B discloses a vacuum cleaner device which detachably hangs a hand-held vacuum cleaner in an upright position on a wall by a wall-in hanger, completing storage and storage of the cleaner. CN208640605U, the chinese utility model discloses a charging support frame of a dust collector, which can complete two functions of charging and accommodating a hand-held dust collector. CN209074440U discloses a hand held upright cleaner which supports the cleaner by a support frame assembly for storage in an upright position. However, in the above configuration, although the storage problem of the vacuum cleaner can be improved, there are also the following problems: 1. the wall needs to be punched or another accessory is installed, and the installation position is usually fixed and cannot be moved; 2. when the handheld dust collector is suspended in use midway, the handheld dust collector is usually erected on the ground through the floor brush, one side of the main machine of the handheld dust collector is leaned on the wall surface, and the gravity of the main machine is transferred to the floor brush to force the rear wheel of the floor brush to move forwards under stress, so that the dust collector cannot be stably erected on the ground, and the handheld dust collector is very inconvenient to temporarily stop.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model aims at providing a can stabilize interim berth and be convenient for accomodate be used for ground cleaning equipment's surface cleaning head.

In order to realize the purpose of the utility model, the utility model adopts the following technical scheme:

a surface cleaning head for a floor cleaning appliance comprising:

a cleaning head housing, the rear part of which is provided with at least one rear wheel capable of rotating;

the rotary connector can be rotationally arranged on the cleaning head shell along the front-back direction;

a rotation restraint comprising a ratchet wheel disposed on and rotatable with said rear wheel, a pawl rotatably disposed at the rear of said cleaner head housing and adjacent said ratchet wheel, said ratchet wheel having a plurality of circumferentially arranged splines, said ratchet wheel having a first region of rotation, said pawl having a second region of rotation, said first region of rotation partially intersecting said second region of rotation and defining an overlap region at the intersection; the pawl is configured to abut against the rotary connector when the rotary connector is rotated forward to a predetermined position and to be driven to rotate by the rotary connector into the overlapping region when the rotary connector continues to rotate forward; when said pawl is driven to rotate to said overlap region, said pawl slides into one of said splines and rotation of said rear wheel is prevented; when the pawl is driven to rotate to the outside of the overlapping area, the pawl slides out of the tooth slot and is far away from the ratchet wheel, and the rear wheel can rotate freely.

In the above technical solution, preferably, the plurality of tooth grooves on the ratchet wheel extend in the circumferential direction, so that the pawl slides into or out of the tooth grooves on the ratchet wheel in the tangential direction tangential to the outer circle of the ratchet wheel.

In the above technical solution, preferably, the rotary connector includes a first rotary joint and a second rotary joint, the first rotary joint is rotatably disposed at the rear portion of the cleaner head housing along the front-rear direction, the second rotary joint has a longitudinal center line, and the second rotary joint is rotatably connected to the first rotary joint around the longitudinal center line.

In the above technical solution, preferably, the rear wheel has a locked state and a released locked state, when the longitudinal centerline of the second rotary joint is substantially perpendicular to the floor to be cleaned, the pawl is at least partially located inside the tooth groove of the ratchet wheel, and the rear wheel is in the locked state; when the longitudinal central line of the second rotating joint is inclined with the ground to be cleaned, the pawl is positioned outside the tooth groove of the ratchet wheel, and the rear wheel is in a locking releasing state.

In the above technical solution, preferably, a toggle part for toggling or releasing the rotation of the pawl is fixedly arranged on the first rotary joint, and the pawl is located on a moving path of the toggle part.

In the above technical solution, preferably, the pawl is mounted on the housing through a rotation shaft extending in a transverse direction, a return member is disposed between the housing and the pawl, one end of the return member is fixedly connected to the housing, the other end of the return member is fixedly connected to the pawl, and the pawl extends in the transverse direction and at least partially extends into an inner peripheral side of the corresponding rear wheel.

In the above technical solution, preferably, the reset component is a torsion spring, a clockwork spring, or an elastic sheet.

In the above technical solution, preferably, the ratchet wheel is located on an inner peripheral side of the rear wheel.

In the above technical solution, preferably, a wheel carrier is fixedly disposed at the rear of the cleaning head housing, and the rear wheel is mounted on the wheel carrier.

In the above technical solution, preferably, the rear portion of the cleaning head housing is provided with a pair of rear wheels, the rotating connector is located between the pair of rear wheels, and the rotation restricting device is disposed on at least one of the rear wheels.

The utility model discloses a set up at least on one of them rear wheel and can follow this rear wheel pivoted ratchet together, at cleaning head casing rear portion pivoted setting and the adjacent pawl of ratchet, a crossing region is injectd with the crossing department of the rotation region of pawl in the rotation region of ratchet, the pawl is constructed when the rotation connector forward rotates a preset position with rotate connector looks butt, and in the rotation connector continues to be rotated forward in by the drive of rotation connector and get into the overlapping region, thereby in the tooth's socket on the pawl cunning into the ratchet, the rear wheel is by the locking not commentaries on classics, when the pawl is driven to rotate outside the overlapping region, the pawl roll-off is followed in the tooth's socket and is kept away from the ratchet, rear wheel ability free rotation. The floor cleaning equipment is convenient to temporarily stop and store; compared with the prior art, the utility model has the advantages of more convenient use, no accessory increase and no space occupation.

Drawings

FIG. 1 is a perspective view of the present invention (with one of the rear wheels removed);

FIG. 2 is an enlarged partial schematic view at A of FIG. 1;

FIG. 3 is a schematic view of the inner side of the rear wheel shown in FIG. 1, shown disassembled;

FIG. 4 is a schematic structural view of a cleaning head housing of the present invention;

FIG. 5 is a schematic top sectional view of a portion of the wheel frame and ratchet wheel of the present invention;

FIG. 6 is a schematic side sectional view of the present invention (the longitudinal centerline of the connecting tube is substantially perpendicular to the floor to be cleaned, and the rear wheel is in a locked state);

FIG. 7 is a schematic side sectional view of the present invention (the longitudinal center line of the connecting tube is inclined to the floor to be cleaned, and the rear wheel is in a locking-released state);

wherein, 1, cleaning head shell; 11. a rear wheel; 12. a wheel carrier; 13. a suction port; 14. a front wheel; 15. a suction channel; 16. connecting a hard pipe;

2. rotating the connector; 21. a first revolute joint; 211. a transverse axis line; 22. a second revolute joint; 221. a longitudinal centerline; 23. a toggle part;

3. a ratchet wheel; 31. a tooth socket;

4. a pawl; 41. a rotating shaft;

5. and a resetting component.

Detailed Description

To explain the technical content, structural features, achieved objects and functions of the present invention in detail, the following detailed description is made with reference to the accompanying drawings. The upper, lower, left, right, front and rear positional relationships described in this embodiment correspond to the positional relationships shown in fig. 1, respectively. The transverse direction refers to a direction extending along the left and right, and the longitudinal direction refers to a direction extending along the axial direction of the hard pipe.

As shown in fig. 1, the surface cleaning head comprises a cleaning head housing 1 and a rotary connection head 2. The cleaning head housing 1 is provided at the front with front wheels 14 and at the rear with a pair of rear wheels 11, the cleaning head housing 1 being supported on the floor to be cleaned primarily by the rear wheels 11. Wherein the front wheel 14 may be a small wheel or a pair of small wheels. The rear wheel 11 may have only one, similar to the drum structure. The rotary joint 2 is mounted at the rear of the cleaner head housing 1 between a pair of rear wheels 11. The housing defines a suction channel 15 within, one end of the suction channel 15 communicating with the suction opening 13 and the other end extending outwardly through the rotatable coupling head 2, which can communicate with a suction unit of the floor cleaning appliance via a connecting wand 16. The rotary joint 2 comprises a first rotary joint 21 rotationally connected with the cleaning head housing 1, and a second rotary joint 22 rotationally connected with the first rotary joint 21. Wherein the first rotary joint 21 can rotate back and forth around a transverse axis 211 relative to the cleaner head housing 1, the second rotary joint 22 has a longitudinal centre line 221, and the second rotary joint 22 can be rotatably connected to the first rotary joint 21 around the longitudinal centre line 221. Of course, the second revolute joint 22 may be directly articulated to the first revolute joint 21, and it is sufficient that it can rotate left and right. The utility model discloses mainly used ground cleaning equipment, wherein ground cleaning equipment can be hand-held type dust catcher, vertical dust catcher, also can be the ground cleaning machine, perhaps can the dust absorption can inhale the dual-purpose cleaning machines of wetting and drying of sewage again, need to hold the end upright lean on the wall when shutting down temporarily promptly for the rear wheel locking. The suction unit on the floor cleaning appliance is connected to the second rotary joint 22 via a connecting pipe 16 or a push rod, and the suction channel 15 inside the cleaning head housing 1 is in air flow communication with the suction unit via this connecting pipe 16, so that dirt suction is achieved. This section belongs to prior art's prior knowledge, aims at understanding the utility model discloses, does not do the perusal.

As shown in fig. 2 and 3, the ratchet 3 is coaxially fixed to one of the rear wheels 11, the ratchet 3 is located on the inner peripheral side of the rear wheel 11, and the axis 41 of the ratchet 3 is preferably parallel to the lateral axis 211 of the first rotary joint 21. The ratchet 3 has a plurality of teeth grooves 31 arranged in the circumferential direction. Referring to fig. 1 and 4, a wheel frame 12 is fixedly provided at the rear of the cleaning head housing 1, and a pair of rear wheels 11 are respectively installed at the left and right sides of the wheel frame 12. As shown in fig. 5, the carrier 12 is provided with the ratchet 4 via a rotation shaft 41 extending in a lateral direction, the return member 5 is provided between the ratchet 4 and the carrier 12, one end of the return member 5 is fixedly connected to the carrier 12, and the other end is fixedly connected to the ratchet 4. So that the pawl 4 can be angularly rotated about the axis of rotation 41 and reset by the resetting member 5. The reset component 5 adopts a torsion spring structure. The pawls 4 extend in the lateral direction and have portions projecting into the inner peripheral side of the rear wheel 11, so that the pawls 4 can be more easily caught or caught in the tooth grooves 31 of the ratchet 3 after the rotation angle. A plurality of splines 31 on the ratchet wheel 3 extend circumferentially for the pawl 4 to slide into and out of the splines 31 on the ratchet wheel 3 in a tangential direction tangential to the outer circumference of the ratchet wheel 3.

Referring to fig. 1 and 2, the first rotating joint 21 is provided with a toggle part 23 for toggling the rotation of the pawl 4, when the first rotating joint 21 rotates back and forth, the toggle part 23 can push the pawl 4 forward or release the rotation of the pawl 4 backward, so that the pawl 4 can rotate at an angle relative to the ratchet wheel 3 and then be clamped or locked in the tooth groove 31 of the ratchet wheel 3, and finally the rear wheel 11 is locked or unlocked to recover the rotation capability.

That is, the rear wheel 11 has a locked state and a unlocked state, when the longitudinal centerline 221 of the second revolute joint 22 is substantially perpendicular to the floor to be cleaned, i.e., when the surface cleaning head is supported on the floor to be cleaned, and the connection pipe 16 or the push rod of the floor cleaning apparatus is leaned against the wall, thereby facilitating the floor cleaning apparatus to be parked midway for temporary parking or storage. Specifically, referring to fig. 6, at least a portion of the pawl 4 is located inside the tooth slot 31 of the ratchet 3, and the rear wheel 11 is in a stopped state and stops rotating. When the longitudinal center line 221 of the second rotary joint 22 is inclined with respect to the floor surface to be cleaned, the surface cleaning head can move on the floor surface to be cleaned for dust collection. Specifically, as shown in fig. 7, the pawl 4 is located outside the tooth groove 31 of the ratchet 3, and the rear wheel 11 is in the unlocked state, and the rotation capability is restored.

Thus, the user can rotate the connecting tube 16 or the push rod back and forth to engage or disengage the pawl 4 from the tooth slot 31 of the ratchet wheel 3, thereby forcing the rear wheel 11 to be in the locked state or unlocked state. Convenience of customers only needs to be connected with the hard tube 16 or the push rod to lean against the wall when the convenience of customers pauses midway to stop temporarily in the process of utilizing the ground cleaning equipment to execute dirt sucking operation, so that the rear wheel 11 can be locked and does not rotate, and the ground cleaning equipment can be conveniently stored. When dust collection operation needs to be continued, the rear wheel 11 can be unlocked and the rotation capability can be recovered only by inclining the connecting hard tube 16 or the push rod and the ground to be cleaned, so that the operation is more convenient.

In the structure, the rotation restraining device is formed by the ratchet wheel and the pawl, and plays a role in restraining the rotation of the rear wheel, so that the rear wheel is stopped from rotating or is restored to rotate. In other embodiments, the rotation restricting devices of the ratchet and the pawl can be respectively arranged on the pair of rear wheels to stop or release the pair of rear wheels simultaneously. And the toggle part can be integrally formed with the first rotating joint. The return member that drives the return of the pawl is not limited to the structure of the torsion spring, but may be a structure of an elastic piece or a clockwork spring instead of the torsion spring. The ratchet wheel does not need to be provided with a structure which is coaxially and fixedly installed with the rear wheel, and can be arranged on the outer peripheral side of the rear wheel, namely the rotating axis of the ratchet wheel is parallel to the rotating axis of the rear wheel, and the ratchet wheel can rotate along with the rotation of the rear wheel, so that the ratchet wheel forms a first rotating area when the rear wheel rotates, the pawl forms a second rotating area when the pawl is driven to rotate by the rotating connector, the first rotating area of the ratchet wheel is partially intersected with the second rotating area of the pawl, an overlapping area is defined at the intersection of the first rotating area and the second rotating area, and when the pawl is driven to rotate by the rotating connector to the overlapping area, the pawl can be clamped into a tooth socket on the ratchet wheel in a circumferential sliding mode, and the rear wheel is stopped from rotating; when the pawl is driven by the rotary connector to rotate to the outside of the overlapping area, the pawl can slide along the circumferential direction and be clamped out of the tooth groove on the ratchet wheel, so that the stopping of the rear wheel is released, and the rear wheel can restore to rotate freely.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A surface cleaning head for a floor cleaning appliance comprising:

a cleaning head housing (1) provided at the rear with at least one rear wheel (11) capable of rotating;

the rotary connector (2) is arranged on the cleaning head shell (1) in a manner of rotating along the front-back direction; it is characterized in that the preparation method is characterized in that,

rotation restricting means comprising a ratchet wheel (3) provided on said rear wheel (11) and rotatable with said rear wheel (11), a pawl (4) rotatably provided at the rear of said cleaner head housing (1) and adjacent to said ratchet wheel (3), said ratchet wheel (3) having a plurality of circumferentially arranged splines (31), said ratchet wheel (3) having a first region of rotation, said pawl (4) having a second region of rotation, said first region of rotation partially intersecting said second region of rotation and defining an overlap region at the intersection; the pawl (4) is configured to abut against the rotary connector (2) when the rotary connector (2) is rotated forward to a predetermined position and to be driven to rotate by the rotary connector (2) into the overlapping region when the rotary connector (2) continues to rotate forward; when said pawls (4) are driven to rotate to said overlap region, said pawls (4) slide into one of said splines (31) and rotation of said rear wheel (11) is prevented; when the pawl (4) is driven to rotate to the outside of the overlapping area, the pawl (4) slides out of the tooth slot (31) and is far away from the ratchet wheel (3), and the rear wheel (11) can rotate freely.

2. A surface cleaning head for a floor cleaning device as claimed in claim 1, wherein: a plurality of tooth grooves (31) on the ratchet wheel (3) extend along the circumferential direction, so that the pawl (4) slides into or out of the tooth grooves (31) on the ratchet wheel (3) along the tangential direction tangent to the excircle of the ratchet wheel (3).

3. A surface cleaning head for a floor cleaning device as claimed in claim 1, wherein: the rotary connector comprises a first rotary joint (21) and a second rotary joint (22), the first rotary joint (21) can rotate in the front-back direction and is arranged at the rear part of the cleaning head shell (1), the second rotary joint (22) is provided with a longitudinal central line (221), and the second rotary joint (22) can wind the longitudinal central line (221) to rotate and is connected to the first rotary joint (21).

4. A surface cleaning head for a floor cleaning device as claimed in claim 3, wherein: the rear wheel (11) has a stop state and a stop release state, when the longitudinal center line (221) of the second rotating joint (22) is approximately vertical to the ground to be cleaned, at least part of the pawl (4) is positioned in the tooth groove (31) of the ratchet wheel (3), and the rear wheel (11) is in the stop state; when the longitudinal central line (221) of the second rotating joint (22) is inclined with the ground to be cleaned, the pawl (4) is positioned outside the tooth groove (31) of the ratchet wheel (3), and the rear wheel (11) is in a locking releasing state.

5. A surface cleaning head for a floor cleaning device as claimed in claim 3, wherein: a toggle part (23) used for toggling or releasing the rotation of the pawl (4) is fixedly arranged on the first rotating joint (21), and the pawl (4) is positioned on the moving path of the toggle part (23).

6. A surface cleaning head for a floor cleaning device as claimed in claim 5, wherein: the pawl (4) is installed on the shell (1) through a rotating shaft (41) extending along the transverse direction, a reset component (5) is arranged between the shell (1) and the pawl (4), one end of the reset component is fixedly connected with the shell (1), the other end of the reset component is fixedly connected with the pawl (4), and the pawl (4) extends along the transverse direction and at least partially extends into the inner peripheral side of the corresponding rear wheel (11).

7. A surface cleaning head for a floor cleaning device as claimed in claim 6, wherein: the reset component (5) is a torsion spring or a clockwork spring or an elastic sheet.

8. A surface cleaning head for a floor cleaning device as claimed in claim 1, wherein: the ratchet wheel (3) is positioned on the inner peripheral side of the rear wheel (11).

9. A surface cleaning head for a floor cleaning device as claimed in claim 1, wherein: the rear part of the cleaning head shell (1) is fixedly provided with a wheel carrier (12), and the rear wheel (11) is arranged on the wheel carrier (12).

10. A surface cleaning head for a floor cleaning device as claimed in claim 1, wherein: the cleaning head is characterized in that a pair of rear wheels is arranged at the rear part of the cleaning head shell, the rotating connector is positioned between the pair of rear wheels, and the rotating restraining device is arranged on at least one of the rear wheels.