Outdoor surface treatment device and related accessory tool assembly
阅读说明:本技术 室外表面处理设备及相关的附件工具组件 (Outdoor surface treatment device and related accessory tool assembly ) 是由 陈伟棠 于 2019-07-17 设计创作,主要内容包括:本发明公开了一种室外表面处理设备,包括具有手柄和头部的主体,所述头部设置成与附件工具组件可拆卸地连接。所述头部包括第一接合布置,以用于可释放地与附件工具组件中的第二接合布置接合。驱动单元设置在头部中并且包括第一联接构件,以用于与附件工具组件中的第二联接构件驱动联接。第一接合布置是固定的。第二接合布置能够在伸出位置和缩回位置之间运动。附件工具组件包括用于将第二接合布置偏置到伸出位置的偏置元件。当附件工具组件与头部对准,特别是当第一接合布置与第二接合布置对准,并且沿着运动轴线运动成与头部接合时,第二接合布置首先抵抗偏置而在第一接合布置上运动,然后返回到伸出位置并与第一接合布置锁定,同时所述第一联接构件与所述第二联接构件联接。(An outdoor surface treatment apparatus includes a body having a handle and a head configured to be removably coupled to an accessory tool assembly. The head includes a first engagement arrangement for releasably engaging with a second engagement arrangement in an accessory tool assembly. A drive unit is disposed in the head and includes a first coupling member for driving coupling with a second coupling member in the accessory tool assembly. The first engagement arrangement is fixed. The second engagement arrangement is movable between an extended position and a retracted position. The accessory tool assembly includes a biasing element for biasing the second engagement arrangement to the extended position. When the accessory tool assembly is aligned with the head, in particular when the first engagement arrangement is aligned with the second engagement arrangement and moved into engagement with the head along the movement axis, the second engagement arrangement is first moved against the bias over the first engagement arrangement, then returned to the extended position and locked with the first engagement arrangement while said first coupling member is coupled with said second coupling member.)
1. An outdoor surface treatment apparatus comprising:
a body having a handle and a head configured to be removably connected with an accessory tool assembly, the head including a first engagement arrangement for releasably engaging with a second engagement arrangement in the accessory tool assembly; and
a drive unit disposed in the head, the drive unit including a first coupling member for driving coupling with a second coupling member in the accessory tool assembly;
the method is characterized in that:
the first engagement arrangement is fixed;
the second engagement arrangement being movable between an extended position and a retracted position, and the accessory tool assembly comprising a biasing element for biasing the second engagement arrangement to the extended position; and
when the accessory tool assembly is aligned with the head and moved along a movement axis into engagement with the head, the second engagement arrangement is first moved against a bias on the first engagement arrangement and then returned to the extended position and locked with the first engagement arrangement while the first coupling member is coupled with the second coupling member.
2. The outdoor surface treatment apparatus of claim 1, further comprising the accessory tool assembly.
3. The outdoor surface treatment apparatus of claim 1, wherein the accessory tool assembly is any one of:
a roller assembly having a roller with bristles arranged to be driven by the drive unit;
an edge cutter assembly having an edge cutter arranged to be driven by the drive unit; and
an edge brush assembly having an edge brush configured to be driven by the drive unit.
4. The outdoor surface treatment apparatus of claim 1, wherein the head includes a long axis that is generally parallel to the axis of motion, and the first engagement arrangement is disposed at a lateral end of the head.
5. The outdoor surface treatment apparatus of any of claims 1 to 4, wherein the second engagement arrangement is radially movable relative to the movement axis between the extended position and the retracted position.
6. The outdoor surface treatment apparatus of claim 5, wherein the first engagement arrangement comprises a groove defined by a wall in a lateral end portion of the head; and the second engagement arrangement comprises a respective hook member arranged to be received in the recess.
7. The outdoor surface treatment apparatus according to claim 5, wherein the first engagement arrangement comprises two grooves defined in lateral end portions of the head, and the second engagement arrangement comprises two respective hook members arranged to be received in the respective grooves.
8. The outdoor surface treatment apparatus of claim 7, wherein the two grooves are diametrically opposed and the two respective hook members are correspondingly diametrically opposed.
9. The outdoor surface treatment apparatus of claim 6, wherein at least one of the forward end of the wall portion and the forward end of the hook member includes a ramp surface to facilitate radial movement of the hook member relative to the wall portion when the accessory tool assembly is aligned with the head portion and moved along the movement axis to engage the head portion.
10. The outdoor surface treatment apparatus of claim 6, wherein the hook member is actuatable by a user to move the hook member to the retracted position to release the engagement of the groove and the hook member.
11. The outdoor surface treatment apparatus of any of claims 1 to 4, wherein the second engagement arrangement is rotatable between the extended position and the retracted position.
12. The outdoor surface treatment apparatus according to claim 11, wherein the first engagement arrangement comprises a stud formed or provided on a wall in a lateral end portion of the head, and the second engagement arrangement comprises a respective hook member provided to engage with the stud.
13. The outdoor surface treatment apparatus according to claim 11, wherein the first engagement arrangement comprises two studs formed or provided on lateral end portions of the head, and the second engagement arrangement comprises two respective hook members provided to engage with the respective studs.
14. The outdoor surface treatment apparatus of claim 13, wherein the two studs are diametrically opposed and the two respective hook members are correspondingly diametrically opposed.
15. The outdoor surface treatment apparatus of claim 12, wherein a forward end of the hook member includes a ramp to facilitate rotation of the hook member relative to the stud when the accessory tool assembly is aligned with the head and moved along the axis of movement engaged with the head.
16. The outdoor surface treatment apparatus of any of claims 12, wherein the accessory tool assembly further comprises a user actuatable release member operably coupled with the hook member, the user actuatable release member configured to be actuated to rotate the hook member into a retracted position to release engagement of the stud and the hook member.
17. The outdoor surface treatment apparatus of claim 16, wherein the user-actuatable release member is rotatable by a user to release engagement of the stud and the hook member.
18. The outdoor surface treatment apparatus of any one of claims 1 to 4, wherein the handle includes a hand grip portion extending generally rearwardly and a base disposed at a rear end of the hand grip portion, and wherein a battery receptacle for receiving a battery pack is disposed at the base.
19. An accessory tool assembly for an outdoor surface treatment apparatus, comprising:
a first coupling member for driving coupling with a tool element and a second coupling member of a drive unit of the outdoor surface treatment apparatus for driving coupling the tool element with the drive unit;
a first engagement arrangement for releasable engagement with a second engagement arrangement in a head of the outdoor surface treatment apparatus;
the method is characterized in that:
the first engagement arrangement being movable between an extended position and a retracted position, and the accessory tool assembly further comprising a biasing element for biasing the first engagement arrangement to the extended position;
the second engagement arrangement is fixed; and
when an accessory tool assembly is aligned with a head and moved along the movement axis into engagement with the head, the first engagement arrangement is first moved against a bias on the second engagement arrangement and then returned to the extended position and locked with the second engagement arrangement while the first coupling member is coupled with the second coupling member.
Technical Field
The present invention relates to an outdoor surface treatment apparatus and an associated accessory tool assembly.
Background
Outdoor surface treatment equipment is a particular type of outdoor product designed for treating outdoor surfaces, such as patio or paving surfaces and joints, which are harder and less fragile than indoor surfaces. These outdoor surfaces and seams are often soiled with tough soils, weeds and grease, which are more difficult to remove than the soils of indoor surfaces.
Manually operated paving-push brooms and electric high-pressure cleaners are examples of conventional outdoor surface treatment devices. Paving and pushing brooms typically include a stationary brush with rigid bristles disposed at the end of the broom shaft. Soil on the surface can be removed by scrubbing the surface with bristles, optionally applying a cleaning solution or powder to the outdoor surface to be cleaned. High pressure cleaners, on the other hand, typically include a nozzle that directs a pressurized liquid onto a surface to remove dirt and grease from the surface. These conventional outdoor surface treatment devices are typically dedicated outdoor devices, which are only suitable for a single outdoor cleaning operation. These devices are not easily convertible to different surface treatment applications and may be difficult to assemble, disassemble, clean, repair, and maintain.
Some recently developed outdoor surface treatment devices include replaceable cleaning modules that can be replaced to adapt the device to different treatment operations. However, some of these alternative mechanisms require the use of another tool to attach and detach the cleaning module. Other replacement mechanisms may operate without the use of tools, but require the user to rest the device on the floor before moving the cleaning module with one hand and actuating the locking/unlocking member on the device with the other hand. In either case, the operations of mounting and dismounting the cleaning module are time consuming, cumbersome and inconvenient for the user.
Disclosure of Invention
It is an object of the present invention to address the above-mentioned needs, overcome or substantially ameliorate the above disadvantages, or more generally, to provide an outdoor surface treatment apparatus and associated accessory tool assembly with improved ease of use and maintenance.
According to a first aspect of the present invention, there is provided an outdoor surface treatment apparatus comprising: a body having a handle and a head, the head being configured to be removably connected with an accessory tool assembly, the head including a first engagement arrangement for releasably engaging with a second engagement arrangement in the accessory tool assembly; and a drive unit disposed in the head and including a first coupling member for driving coupling with a second coupling member in the accessory tool assembly; wherein the first engagement arrangement is fixed; wherein the second engagement arrangement is movable between an extended position and a retracted position, and the accessory tool assembly comprises a biasing element for biasing the second engagement arrangement to the extended position; wherein, when the accessory tool assembly is aligned with the head (in particular when the first engagement arrangement is aligned with the second engagement arrangement) and moved into engagement with the head along the movement axis, the second engagement arrangement is first moved against the bias on the first engagement arrangement and then returned to the extended position and locked with the first engagement arrangement while said first coupling member is coupled with said second coupling member. Outdoor surface treatment apparatus is suitable for moving along and treating patio or paved surfaces, including their seams and edges, which are formed from stone (natural or man-made), concrete, wood, ceramic tiles, and the like.
In one embodiment of the first aspect, the outdoor surface treatment apparatus further comprises an accessory tool assembly.
In one embodiment of the first aspect, the head comprises a long axis generally parallel to the axis of motion; the first engagement arrangement is provided at a lateral end of the head. In one example, the first engagement arrangement is provided at a lateral end of the head and the further first engagement arrangement is provided at the further lateral end of the head.
In an embodiment of the first aspect, the second engagement means arrangement is radially (not necessarily strictly) movable between the extended position and the retracted position relative to the movement axis. The spring member may be a spring plate, a compression spring, or the like. The first engagement arrangement may comprise at least one groove defined by a wall in a transverse end portion of the head; the second engagement arrangement may comprise a respective hook member arranged to be received in the recess. Preferably, the first engagement arrangement comprises two recesses defined in lateral end portions of the head, and the second engagement arrangement comprises two respective hook members arranged to be received in the respective recesses. More preferably, the two grooves are diametrically opposed and the two respective hook members are correspondingly diametrically opposed. In a preferred embodiment, at least one of the forward end of the wall portion and the forward end of the hook member includes a ramp to facilitate radial movement of the hook member relative to the wall portion when the accessory tool assembly is aligned with the head portion (particularly when the first engagement arrangement is aligned with the second engagement arrangement) and moved along the axis of movement to engage the head portion. The bevel may be straight or curved. Preferably, the hook member is user actuable to move the hook member to the retracted position to release the engagement of the recess and the hook member.
In another embodiment of the first aspect, the second engagement arrangement is rotatable between the extended position and the retracted position. The biasing element may be a spring plate, a compression spring, a torsion spring, an elastic rubber member, or the like. The first engagement arrangement may comprise a stud formed or provided on a wall in a lateral end portion of the head, and the second engagement arrangement may comprise a corresponding hook member arranged to engage with the stud. Preferably, the first engagement arrangement comprises two studs formed or provided on lateral end portions of the head, and the second engagement arrangement comprises two respective hook members arranged to engage with the respective studs. The stud may extend radially relative to the axis of motion. More preferably, the two studs are diametrically opposed and the two corresponding hook members are correspondingly diametrically opposed. In a preferred embodiment, the forward end of the hook member includes a ramp surface to facilitate rotation of the hook member relative to the stud when the accessory tool assembly is aligned with the head and moved along an axis of movement that engages the head. The bevel may be straight or curved. Optionally, the accessory tool assembly further comprises a user actuatable release member operably coupled with the hook member, the user actuatable release member configured to be actuated to rotate the hook member into a retracted position to release engagement of the stud and hook member. The user actuatable release member may be a rotatable button, a sliding button, or the like.
In one embodiment of the first aspect, the accessory tool assembly comprises any one of: a wheel assembly having wheels configured to support movement of the outdoor surface treatment apparatus; a roller assembly having a roller with rigid bristles, the roller being configured to be driven by a drive unit to treat an exterior surface of the chamber; an edge cutter assembly having an edge cutter (e.g., a blade or a cutting disk) configured to be driven by a drive unit to treat an outdoor surface; and an edge brush assembly having an edge brush (e.g., a wire brush) configured to be driven by the driving unit to treat the outdoor surface. The wheels of the wheel assembly may be arranged to be driven by the drive unit to facilitate movement of the outdoor surface treatment apparatus. The roller assembly may comprise two separate components, each component being arranged to be connected to a respective lateral end portion of the head. In one example, the outdoor surface treatment apparatus includes two accessory tool assemblies, a wheel assembly connected at one lateral end of the head and an edge brush or edge cutter assembly connected at the other lateral end of the head.
In one embodiment of the first aspect, the handle includes a generally rearwardly extending hand grip portion and a base disposed at a rear end of the hand grip portion, the battery receptacle for receiving the battery pack being disposed at the base. The battery is preferably a rechargeable battery of lithium chemistry.
In one embodiment of the first aspect, the body further comprises an elongated tube assembly connecting the handle with the head. Preferably, the elongate tube assembly is telescopic, for example being formed of inner and outer tubes which are relatively movable.
In one embodiment of the first aspect, the body further comprises an auxiliary handle connected to the elongate tube assembly at a location between the handle and the head. Preferably, the auxiliary handle is rotatable relative to the elongate tube assembly about an axis of rotation substantially transverse to the longitudinal axis of the elongate tube assembly. A locking mechanism may be provided for locking the angle of rotation of the auxiliary handle relative to the elongate tube assembly.
According to a second aspect of the present invention there is provided an accessory tool assembly for an outdoor surface treating appliance, comprising: a first coupling member for driving coupling with the tool element and a second coupling member of a drive unit of the outdoor surface treatment apparatus for driving coupling the tool element with the drive unit; a first engagement arrangement for releasable engagement with a second engagement arrangement in a head of an outdoor surface treatment apparatus; wherein the first engagement arrangement is movable between an extended position and a retracted position, and the accessory tool assembly comprises a biasing element for biasing the first engagement arrangement to the extended position; wherein the second engagement arrangement is fixed; wherein, when the accessory tool assembly is aligned with the head (in particular when the first engagement arrangement is aligned with the second engagement arrangement) and moved into engagement with the head along the movement axis, the first engagement arrangement is first moved against the bias on the second engagement arrangement and then returned to the extended position and locked with the second engagement arrangement while said first coupling member is coupled with said second coupling member.
In one embodiment of the second aspect, the first engagement arrangement is radially movable relative to the movement axis between an extended position and a retracted position. The biasing element may be a spring plate, a compression spring, a resilient rubber member, or the like. The first engagement arrangement may comprise a hook member; and the second engagement arrangement may comprise a groove defined by a wall in the transverse end portion of the head for receiving the hook member. In one embodiment, the first engagement arrangement comprises two hook members and the second engagement arrangement comprises two respective grooves defined by respective walls in the lateral end portions of the head for receiving the respective hook members. Preferably, the two hook members are diametrically opposed and the two respective recesses are correspondingly diametrically opposed. Preferably, at least one of the forward end of the wall member and the forward end of the hook member includes a ramp surface to facilitate radial movement of the hook member relative to the wall member when the accessory tool assembly is aligned with the head and moved along the axis of movement into engagement with the head. The bevel may be straight or curved. The hook member is actuatable by a user to move to a retracted position to release the engagement of the groove and the hook member.
In another embodiment of the second aspect, the first engagement arrangement is rotatable between an extended position and a retracted position. The biasing element may be a spring plate, a compression spring, a torsion spring, an elastic rubber member, or the like. The first engagement arrangement may comprise a hook member; and the second engagement arrangement comprises a respective stud formed or provided on a wall of the transverse end of the head for engagement with the hook member. Preferably, the first engagement arrangement comprises two hook members; and the second engagement arrangement comprises two respective studs, each stud being formed or provided on a respective wall in the transverse end of the head for engagement with a respective hook member. The stud may extend radially relative to the axis of motion. Preferably, the two hook members are diametrically opposed and the two respective studs are correspondingly diametrically opposed. In one embodiment, the forward end of the hook member includes a ramp to facilitate rotation of the hook member relative to the stud when the accessory tool assembly is aligned with the head and moved along the axis of motion into engagement with the head. The bevel may be straight or curved. Optionally, the accessory tool assembly further comprises a user actuatable release member operably coupled with the hook member, the user actuatable release member configured to be actuated to rotate the hook member to the retracted position to release the engagement of the stud and the hook member. The user actuatable release member may be a rotatable button, a sliding button, or the like.
In one embodiment of the second aspect, the accessory tool assembly further comprises a tool element.
In one embodiment of the second aspect, the accessory tool assembly comprises any one of: a wheel assembly having wheels configured to support movement of the outdoor surface treatment apparatus; a roller assembly having a roller with rigid bristles, the roller being configured to be driven by a drive unit to treat an exterior surface of the chamber; an edge cutter assembly having an edge cutter (e.g., a blade or a cutting disk) configured to be driven by a drive unit to treat an outdoor surface; and an edge brush assembly having an edge brush (e.g., a wire brush) configured to be driven by the driving unit to treat the outdoor surface. The wheels of the wheel assembly may be arranged to be driven by the drive unit to facilitate movement of the outdoor surface treatment apparatus. The roller assembly may comprise two separate components, each component being arranged to be connected to a respective lateral end portion of the head.
In one embodiment of the second aspect, the accessory tool assembly is the accessory tool assembly of the first aspect.
According to a third aspect of the present invention there is provided an accessory tool assembly for an outdoor surface treating appliance, comprising: a first coupling member for driving coupling with a tool element; and a second coupling member for a drive unit of the outdoor surface treatment apparatus for drivingly coupling the tool element with the drive unit; and a housing for receiving the first coupling member, the housing including an axially extending mounting neck having an axial end face and an outer wall defining a thickness in an axial direction. Wherein the mounting neck is arranged to detachably engage with the guard of the tool element; wherein the guard includes a resilient wall portion defining a mouth for receiving the mounting neck, the mouth having a width less than a width defined by an outer wall of the mounting neck such that when the guard is inserted into the mounting neck in a direction generally transverse to the axial direction, the mouth expands and the resilient wall portion clamps onto the mounting neck.
In one embodiment of the third aspect, the accessory tool assembly further comprises a guard.
Preferably, the width of the mounting opening is 60% to 99% of the width of the mounting neck.
In one embodiment of the third aspect, the outer wall has a slot for receiving a locking member of the guard. In a preferred embodiment, the outer wall has a peripheral portion with an array of slots disposed thereon for receiving a locking member of the guard. The number of slots in the array may be, for example, between 2 and 30.
Preferably, the guard is rotatably adjustable relative to the mounting neck when mounted thereto. In one embodiment of the third aspect, the locking member is arranged to move from engagement with one slot to engagement with the other slot when the guard is rotated relative to the mounting neck.
In one embodiment of the third aspect, the locking member comprises a tab formed on a resilient arm of the guard. Preferably, the resilient arm is integral with the guard. The resilience may be provided by the material of the guard itself, or may provide a weakened portion (e.g. a cut) formed in the guard. Preferably, the entire guard is integrally formed.
In one embodiment of the third aspect, the accessory tool assembly comprises any one of: a roller assembly having a roller, the roller being configured to be driven by a driving unit to treat an outer surface of the chamber; an edge cutter assembly having an edge cutter disposed to be driven by a drive unit for treating an outdoor surface; and an edge brush assembly having an edge brush configured to be driven by the driving unit to treat an outdoor surface.
In an embodiment of the third aspect, the accessory tool assembly is the accessory tool assembly of the first or second aspect.
According to a fourth aspect of the present invention, there is provided a guard for an accessory tool assembly of an outdoor surface treating appliance, comprising: a body including a resilient wall portion defining a mouth for receiving an axially extending mounting neck of a housing of an accessory tool assembly, the axially extending mounting neck having an axial end face and an outer wall defining a thickness in an axial direction; wherein the mouth has a width less than a width defined by an outer wall of the mounting neck such that when the guard is inserted into the mounting neck in a direction generally transverse to the axial direction, the mouth expands and the resilient wall portion clips onto the mounting neck.
Preferably, the width of the mounting opening is 60% to 99% of the width of the mounting neck.
In one embodiment of the fourth aspect, the guard further comprises a locking member configured to be received in a slot formed in the outer wall. Preferably, the locking member is arranged to be received in an array of slots formed in the outer wall.
Preferably, the guard is rotatably adjustable relative to the mounting neck when mounted thereto. In one embodiment, the locking member is configured to move from engagement with one slot to engagement with the other slot when the guard is rotated relative to the mounting neck.
In one embodiment of the fourth aspect, the locking member comprises a tab formed on a resilient arm of the guard. Preferably, the resilient arm is integral with the guard. The resilience may be provided by the material of the guard itself, or may provide a weakened portion (e.g. a cut) formed in the guard. Preferably, the entire guard is integrally formed.
In one embodiment of the fourth aspect, the accessory tool assembly comprises any one of: a roller assembly having a roller, the roller being configured to be driven by a driving unit to treat an outer surface of the chamber; an edge cutter assembly having an edge cutter disposed to be driven by a drive unit for treating an outdoor surface; and an edge brush assembly having an edge brush configured to be driven by the driving unit to treat an outdoor surface.
In an embodiment of the fourth aspect, the accessory tool assembly is of the first, second or third aspect.
Drawings
Embodiments of the invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a perspective view of an outdoor surface treatment apparatus without any accessory tool assembly and power source in one embodiment of the present invention;
FIG. 2 is a side view of a handle of the outdoor surface treatment apparatus of FIG. 1;
FIG. 3 is a perspective view of an auxiliary handle and a telescoping adjustment mechanism of the outdoor surface treating appliance of FIG. 1;
FIG. 4 is a perspective view of the outdoor surface treatment apparatus of FIG. 1 (with the wheel assembly, edge brush assembly, and battery pack attached) in a first configuration in one embodiment of the invention;
FIG. 5 is a front view of a base of the outdoor surface treatment apparatus of FIG. 4;
FIG. 6 is an exploded view of the base of the outdoor surface treatment apparatus of FIG. 4;
FIG. 7 is a perspective view of respective lateral ends of the wheel assembly of FIG. 4 and the head of the outdoor surface treatment apparatus of FIG. 4;
FIG. 8 is a perspective view of respective lateral ends of the head of the outdoor surface treatment apparatus of FIG. 4 and the edge brush assembly of FIG. 4;
FIG. 9 illustrates a cross-sectional view of the coupling arrangement of the edge brush assembly of FIG. 4 and a corresponding coupling arrangement of the head of the outdoor surface treatment apparatus of FIG. 4 prior to coupling;
FIG. 10 illustrates a cross-sectional view of the coupling arrangement of the edge brush assembly of FIG. 4 and a corresponding coupling arrangement of the head of the outdoor surface treatment apparatus of FIG. 4 disposed after coupling;
FIG. 11 is a cross-sectional view of the edge brush assembly of FIG. 8 through the plane of FIG. 8;
FIG. 12 is an exploded view of the edge brush assembly of FIG. 8;
FIG. 13 is an exploded view of the housing portion and blade guard of the edge brush assembly of FIG. 8;
FIG. 14 is a side view of the blade guard of FIG. 13;
FIG. 15 is a side view of the housing portion of FIG. 13;
FIG. 16 is a side view of the housing portion and blade guard of FIG. 13 prior to coupling;
FIG. 17 is a side view of the housing portion and blade guard of FIG. 13 after coupling;
FIG. 18 is a perspective view of the outdoor surface treatment apparatus of FIG. 1 with a two-piece roller assembly and battery pack attached in a second configuration in one embodiment of the present invention;
fig. 19 is a front view of a base of the outdoor surface treatment apparatus of fig. 18;
FIG. 20 is an exploded view of the base of the outdoor surface treatment apparatus of FIG. 18;
FIG. 21 is a perspective view of the internal structure of a portion of the roller assembly of the outdoor surface treatment apparatus of FIG. 18 (with the end cap removed);
FIG. 22 is a perspective view of a portion of the components of the roller assembly of FIG. 21 and the respective lateral ends of the head of the outdoor surface treatment apparatus of FIG. 18;
FIG. 23 is a perspective view of another component of the roller assembly of the outdoor surface treatment apparatus of FIG. 18 and a corresponding lateral end of the head of the outdoor surface treatment apparatus of FIG. 18;
FIG. 24 is an exploded perspective view of a base of an outdoor surface treatment apparatus having an edge brush assembly in one embodiment of the invention.
FIG. 25 is another exploded perspective view of the base of the outdoor surface treatment device and edge brush assembly of FIG. 24;
FIG. 26 is a perspective view of the edge brush assembly of FIG. 24 with the coupling hooks in a biased extended position;
FIG. 27 is a perspective view of the edge brush assembly of FIG. 24 with the coupling hook in a retracted position; and
fig. 28 is an exploded perspective view of a base of an outdoor surface treatment apparatus having a roller brush assembly in one embodiment of the invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
Fig. 1 to 3 show an outdoor
In this embodiment, the
As shown in fig. 1 and 2, the
As shown in fig. 1 and 3, an auxiliary handle 110 is mounted to the
Fig. 4-6 illustrate the outdoor
Fig. 7 shows the
The groove 104BS on the
Fig. 8 illustrates the
In this embodiment, the groove 104AS on the
Fig. 9 and 10 more particularly illustrate the spring-biased
Figures 11 and 12 illustrate the structure of
A
Referring now to fig. 14 and 15,
Fig. 16 and 17
Fig. 18-20 show the outdoor
Fig. 21 and 22 show the internal structure of the
Fig. 22 and 23 show a
Fig. 24 and 25 show another outdoor surface treatment apparatus 100' in another embodiment of the present invention. The outdoor surface treatment apparatus 100 ' is substantially identical to the
AS shown in fig. 25, the head 104 'includes two
In operation, AS edge brush assembly 400 'is moved along axis D' toward head 104 'and abuts the engagement end of head 104', ramp 406HR 'of
Fig. 28 shows the engagement mechanism of fig. 24-27 (the main difference being the engagement mechanism and release mechanism) applied to a roller assembly 500' similar to that of fig. 18-20.
An advantage of the above-described embodiments of the outdoor surface treatment apparatus and accessory tool assembly is that they can be easily installed and removed without having to use tools such as hex wrenches or wrenches. This is particularly advantageous for push-behind devices with a relatively high body. To attach the accessory tool assembly, the user may simply manipulate the exterior surface treatment device with one hand and the accessory tool assembly with the other hand, then align them and combine them together to engage the accessory tool assembly with the exterior surface treatment device. In this process, the user does not have to operate any locks or actuators on the accessory tool assembly or device. To remove the accessory tool assembly, a user may simply hold the outdoor surface treatment device with one hand and the accessory tool assembly with the other hand. A user may use a hand holding the accessory tool assembly to actuate a release member or hook member on the accessory tool assembly and then pull and release the accessory tool assembly from the outdoor surface treatment apparatus. No special placement equipment is required. In some embodiments, the guard may be mounted to an accessory tool assembly or device without the use of tools. Some embodiments also allow for adjustment of the guard without having to use tools. These arrangements further improve the ease of use of the device. The engagement mechanism for the accessory tool assembly and the device head may provide a click (through material contact) to indicate that engagement was successful. Likewise, the engaging and rotating mechanism of the guard may also provide a click to indicate movement.
The above-described embodiments of the outdoor surface treatment apparatus and accessory tool assembly also enable the apparatus to be easily converted to a different application, or to be easily replaced with a new tool assembly when a tool assembly fails or is damaged. The versatility of the device as well as the maintenance cost-effectiveness and efficiency can be improved. In embodiments where the battery receptacle is provided at the bottom of the handle, i.e. the rearwardly extending top end of the device, when the user operates the device by tilting the device backwards and pushing the device along a surface, a moment is applied to the device to urge the device to move forwards (by rotating a rotatable tool element, such as a wheel, roller, etc. of an accessory tool assembly).
It will be appreciated by persons skilled in the art that numerous variations and/or modifications may be made to the invention as shown in the specific embodiments without departing from the scope of the invention as defined by the appended claims. In particular, features disclosed in one embodiment may be selectively applied to another embodiment to provide a new embodiment, as long as they fall within the claims; features from different embodiments may be combined to form new embodiments; one or more features from the same embodiment may be replaced or removed to provide a new embodiment. The described embodiments of the present invention should be considered in all respects as illustrative and not restrictive.
For example, the outdoor surface treatment apparatus may be electrically powered or may be a mechanical apparatus that does not require electrical power to operate. The device is preferably a cordless DC electrical device, but it is alternatively a corded AC electrical device or a hybrid AC-DC electrical device. The device may be operated with any number of battery packs. In one example, the device operates using an 18V lithium-based battery. The outdoor surface treatment apparatus may take different shapes and forms. For example, the outdoor surface treatment apparatus may include any number of handles. The battery receptacle may be located remotely from the handle, for example, on the head. The connecting tube assembly between the handle and the head need not be adjustable. The handle need not be disposed at the topmost end of the body and need not extend rearwardly. The auxiliary handle may be fixedly connected to the tube assembly (non-adjustable with respect to the tube assembly), or may even be omitted. The drive unit may comprise any type of prime mover, preferably a motor, and optionally has one or more gear transmission units coupled with the coupling members for coupling with corresponding coupling members on the accessory tool assembly. The motor may be oriented differently, for example, with the motor shaft extending at an angle to the horizontal or even vertical direction. The coupling between the drive unit and the coupling part of the accessory tool assembly may be any member or part arranged to establish a mechanical connection. Alternatively, the electrical connection can also be established when the mechanical connection is established. The head may include any number of engagement mechanisms, each engagement mechanism configured to engage with a respective accessory tool assembly. The axis of motion for engaging the accessory tool assembly with the outdoor surface treatment device may be a horizontal axis (attached and detached from the side), a vertical axis (attached and detached from the bottom), or any other axis.
An accessory tool assembly for an outdoor surface treatment apparatus may be any tool module that is configured to interact with an outdoor surface to be cleaned or being cleaned. In other words, the engagement and coupling mechanism may be provided on other types of accessory tool assemblies. The shape and form of the accessory tool assembly may vary. The number of actuators and engagement features may be any number, preferably less than 4. The rollers, edge brushes, edge cutters or wheels may have different shapes and forms. For example, the roller may comprise any hair arrangement. The bristles are preferably, but not necessarily, stiff. The roller bristles may be uniform or non-uniform. In some examples, it may be advantageous to include bristles having different lengths and/or stiffness, for example, alternatively along one or both of the circumferential surface or major axis of the roller, to provide improved cleaning. The edge brush may be a wire brush. The edge cutter may be a disc blade. The accessory tool assembly may or may not include a guard. In examples with guards, the guards may take on appropriate shapes and shapes as guards for edge cutters, guards for edge brushes, guards for rollers, and the like. The shape and form of the guard may vary, but the guard may generally be any type of cover that at least partially surrounds the tool element (e.g., brush or cutter) to shield the tool element from the user and the material on the surface agitated by the tool element. The mounting mechanisms and rotation mechanisms of the guard disclosed with respect to the edge brush assembly are equally applicable to other accessory tool assemblies.
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