WO2019042397A1 - 拖把 - Google Patents

拖把 Download PDF

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Publication number
WO2019042397A1
WO2019042397A1 PCT/CN2018/103466 CN2018103466W WO2019042397A1 WO 2019042397 A1 WO2019042397 A1 WO 2019042397A1 CN 2018103466 W CN2018103466 W CN 2018103466W WO 2019042397 A1 WO2019042397 A1 WO 2019042397A1
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WO
WIPO (PCT)
Prior art keywords
inner tube
thread
mop
outer tube
tube
Prior art date
Application number
PCT/CN2018/103466
Other languages
English (en)
French (fr)
Inventor
曹士松
盛小明
Original Assignee
卡尔·弗罗伊登伯格公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 卡尔·弗罗伊登伯格公司 filed Critical 卡尔·弗罗伊登伯格公司
Priority to CN201880040662.8A priority Critical patent/CN111093454A/zh
Priority to AU2018323321A priority patent/AU2018323321B2/en
Publication of WO2019042397A1 publication Critical patent/WO2019042397A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20—Mops
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L13/00—Implements for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L13/10—Scrubbing; Scouring; Cleaning; Polishing
    • A47L13/20—Mops
    • A47L13/24—Frames for mops; Mop heads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25G—HANDLES FOR HAND IMPLEMENTS
    • B25G1/00—Handle constructions
    • B25G1/04—Handle constructions telescopic; extensible; sectional

Definitions

  • the present application relates to a cleaning tool, and more particularly to a hand-operated mop that is relatively labor-saving and variable-speed rotation.
  • the mop bucket is usually matched with the mop to rotate the mop to realize the function of washing and drying; and generally, the shifting device is added in the mop head to adjust the rotation speed of the mop, and the rotation speed of the mop is reduced during washing.
  • the required driving force prevents water from splashing out of the bucket; while the dryer is rotated, the speed of the mop is quickly dried.
  • the shifting device has many parts, a complicated structure, high mold investment, and high product cost.
  • the present application proposes a hand-operated mop that is relatively labor-saving and variable-speed rotation.
  • the present application provides a mop including a mop bar and a mop head, the mop bar including an outer tube, an inner tube sliding inside the outer tube, and a smart lock connecting the outer tube and the inner tube a driving mechanism for driving the inner tube to rotate and slide relative to the outer tube;
  • the driving mechanism includes a driving shaft fixed to the outer tube and located in the inner tube, and disposed on an inner wall of the inner tube
  • An internal thread having a fixed gear fixed to the drive shaft, a one-way gear sleeved on the drive shaft and capable of approaching or away from the fixed gear along a length of the drive shaft,
  • the unidirectional gear is provided with a plurality of convex teeth projecting outwardly from the radial direction thereof and cooperating with the internal thread, the thread comprising a first thread, located below the first thread and smoothed with the first thread a second thread of transition, the pitch of the first thread being greater than the pitch of the second thread.
  • the drive mechanism further includes a limit mechanism that limits movement of the drive shaft relative to the inner tube.
  • the limiting mechanism includes a limiting member disposed at a top end of the inner tube, a first limiting pad disposed on the driving shaft near the operating end, and disposed on the driving shaft a second limiting pad adjacent to the fixed gear, wherein the limiting member is provided with a through hole through which the limiting shaft between the first limiting pad and the second limiting pad passes.
  • the drive shaft further has a limiting piece for restricting movement of the one-way gear away from the fixed gear.
  • the inner tube includes a first inner tube having an inner wall and an inner tube, and a second inner tube sleeved outside the first inner tube, the second inner tube being more than the first
  • the inner tube is long, and the mop head is fixed to the second inner tube.
  • the inner tube further includes an end cap located at one end of the second inner tube to fix the mop head.
  • the internal thread is a continuous thread.
  • the top of the outer tube is gathered toward the center to form a gathering portion
  • the driving shaft further includes an upper limit ring disposed at a top end thereof and having a diameter larger than a diameter of the gathering portion, and located below the upper limit ring And a diameter smaller than a tightening portion of the gathering portion, a lower limit ring having a diameter smaller than the diameter of the gathering portion.
  • the smart lock includes a locking member having a locking piece spaced apart in a circumferential direction thereof, and a locking sleeve located outside the locking member.
  • the mop bar further includes an upper rod sleeved at one end of the outer tube, and a fixed lock fixedly connecting the upper rod and the outer tube.
  • the invention has the beneficial effects that the mop of the invention has a first thread with a larger pitch and a second thread with a smaller pitch below the first thread.
  • the convex tooth first Cooperating with the first thread to drive the inner tube to rotate, the starting force is small; when the outer tube moves downward relative to the inner tube until the convex tooth cooperates with the second thread, the inner tube Having rotated, the male teeth cooperate with the second thread under the rotational inertia of the inner tube to more easily drive the inner tube to continue to rotate at a higher speed.
  • the convex tooth cooperates with the first thread to drive the inner tube to rotate, and the rotation speed is small, which prevents the water from splashing out of the barrel;
  • the lower moving convex tooth first cooperates with the first thread to drive the inner tube to obtain an initial speed with a small driving force, and the convex tooth cooperates with the second thread to drive the The inner tube rotates at a large speed to quickly dry the water.
  • FIG. 1 is a schematic structural view of a mop according to a preferred embodiment of the present invention.
  • Figure 2 is a partial exploded view of the mop of Figure 1;
  • Figure 3 is a partial exploded view of the mop rod of Figure 1 removed from the upper rod;
  • Figure 4 is another exploded state view of the mop bar of Figure 1 removed from the upper rod;
  • Figure 5 is a structural schematic view of the mop bar of Figure 1 after the drive shaft is removed;
  • Figure 6 is a cross-sectional view taken along line A-A of Figure 5, and the A-A direction in Figure 6 is consistent with the A-A direction in Figure 1;
  • Figure 7 is a schematic view showing the structure of the drive shaft shown in Figure 4.
  • Figure 8 is a schematic view of the mop rod of Figure 1 with the upper rod removed and the outer tube and inner tube sectioned in the A-A direction.
  • the mop 100 includes a hand-pressible rotatable mop stick 1 and a mop head 2 fixed to the mop stick 1.
  • the mop 100 is used in conjunction with a mop bucket (not shown) having a wash basket and a drying basket that can drive the mop head 2 to rotate to facilitate washing and drying of the mop head 2.
  • the mop lever 1 includes an outer tube 11 , an inner tube 12 sliding in the outer tube 11 , and wisdom for connecting the outer tube 11 and the inner tube 12 .
  • the lock 13 drives a drive mechanism for rotating the inner tube 12 relative to the outer tube 11.
  • the outer tube 11 has an operation end 111 and an open end 112 which are respectively disposed on both sides along a longitudinal direction thereof, and the inner tube 12 has a sliding end which is inserted into the outer tube 11 from the open end 112, and is located at the a connecting end of the outer tube 11 and connected to the mop head 2.
  • the smart lock 13 includes a locking member 132 having a locking piece 131 spaced apart in the circumferential direction thereof, and a locking sleeve 133 located outside the locking member 132.
  • the locking member 132 is first placed at the junction of the outer tube 11 and the inner tube 12, and the locking sleeve 133 is sleeved outside the locking member 132;
  • the locking piece 131 is tightened and the outer tube 11 and the inner tube 12 are radially locked.
  • the smart lock 13 is in a locked state, and the outer tube 11 is
  • the inner tube 12 is relatively fixed and can be mopped; when the locking sleeve 133 is loosened, the locking piece 131 is released, the smart lock 13 is in an unlocked state, and the outer tube 11 and the inner tube are 12 can be relatively slid and rotated to wash and dry the mop head 2.
  • the driving mechanism includes a driving shaft 14 fixed to the operating end 111 and located in the inner tube 12 , and an internal thread 15 disposed on an inner wall of the inner tube 12 .
  • the driving shaft 14 cooperates with the internal thread 15 to convert the linear motion of the outer tube 11 into the rotational movement of the inner tube 12, thereby causing the mop head 2 to rotate to achieve washing and drying.
  • the top of the outer tube 11 is gathered toward the center to form a gathering portion 113 having a diameter slightly smaller than the diameter of the outer tube 11, and the driving shaft 14 further includes a top portion thereof.
  • an upper limit ring 141 having a diameter slightly larger than a diameter of the gather portion 113, a tightening portion 142 located below the upper limit ring 141 and having a diameter not larger than the gather portion 113, and a diameter at a lower end of the tightening portion 142 a lower limit ring 143 slightly larger than the diameter of the gather portion 113, the gather portion 113 being defined between the upper limit ring 141 and the lower limit ring 143 such that the drive shaft 14 and the outer tube 11 are fixed.
  • the drive shaft 14 has a fixed gear 144 fixed to the drive shaft 14 , and is sleeved on the drive shaft 14 and can be along the drive shaft 14 .
  • a one-way gear 145 having a length direction close to or away from the fixed gear 144, the fixed gear 144 and the one-way gear 145 respectively having a first meshing tooth 1441 and a second meshing tooth 1451 that are in mesh with each other, and the one-way
  • the gear 145 is provided with a plurality of protruding teeth 1452 that project outwardly in the radial direction thereof and cooperate with the internal thread 15.
  • the one-way gear 145 is adjacent to the fixed gear 144, and the first meshing teeth 1441 are meshed with the second meshing teeth 1451 such that the one-way gear 145 is fixed relative to the drive shaft 14 without rotating around the drive shaft 14 , and the inner tube 12 is driven to rotate by the internal thread 15 when the convex tooth 1452 moves downward, and the inner tube 12 drives the inner tube 12
  • the mop head 2 is rotated; the driving mechanism converts the up and down displacement of the outer tube 11 into a rotational motion of the inner tube 12 to drive the mop head 2 to rotate, to achieve washing and drying.
  • the drive shaft 14 further has a limiting piece 146 for restricting movement of the one-way gear 145 away from the fixed gear 144.
  • a limiting piece 146 for restricting movement of the one-way gear 145 away from the fixed gear 144.
  • the drive mechanism further includes a limit mechanism that limits the movement of the drive shaft 14 relative to the inner tube 12.
  • the limiting mechanism includes a limiting member 147 disposed at a top end of the inner tube 12, a first limiting pad 148 disposed on the driving shaft 14 adjacent to the operating end 111, and disposed on the driving shaft 14 Close to the second limiting pad 149 of the fixed gear 144, the limiting member 147 is provided with the limiting shaft between the first limiting pad 148 and the second limiting pad 149. Through hole.
  • the first limiting pad 148 and the second limiting pad 149 are made of a rubber material with better cushioning performance, and the limiting structure may further include a first limiting pad 148 and a The second limiting pad 149 faces the buffer pad 140 on one side of the limiting member 147, respectively.
  • the limiting member 147 is any structure that can be matched with the first limiting pad 148 and the second limiting pad 149.
  • the limiting member 147 is disposed on the inner tube 12
  • An upper end cover 123 having a top end and sealing a top end opening thereof, the upper end cover 123 having a through hole through which the limiting shaft between the first limiting pad 148 and the second limiting pad 149 passes.
  • the top of the inner tube 12 can also be disposed as a limiting member 147 that can cooperate with the second limiting pad 149, and the same effect has been achieved.
  • the internal thread 15 is a continuous thread, so that the convex tooth 1452 rotates smoothly along the internal thread 15 without noise; wherein the continuous thread means that the internal thread 15 is continuous in the up and down direction and the circumferential direction. There is no gap in the middle; that is, the protruding teeth 1452 are always located in the internal thread 15 during the movement of the internal thread 15.
  • the internal thread 15 includes a first thread 151, a second thread 152 located below the first thread 151 and smoothly transitioning with the first thread 151, the first thread 151 having a pitch greater than the first thread The pitch of the two threads 152.
  • the protruding teeth 1452 When the outer tube 11 is pressed down, the protruding teeth 1452 firstly cooperate with the first thread 151 having a larger pitch to drive the inner tube 12 to rotate, and the starting force is small; when the outer tube 11 is opposite to the inner tube 11 When the tube 12 is moved downward until the convex tooth 1452 is engaged with the second thread 152, the inner tube 12 has been rotated, and the convex tooth 1452 and the second are under the rotational inertia of the inner tube 12 The engagement of the threads 152 can more easily drive the inner tube 12 to continue to rotate.
  • the protruding teeth 1452 cooperate with the first thread 151 to drive the inner tube 12 to rotate, and the rotation speed is small to prevent the water from splashing out of the barrel.
  • the convex tooth 1452 moving from the top to the bottom first cooperates with the first thread 151 to drive the inner tube 12 to rotate at a small speed, so as to avoid the high-speed rotation of the centrifugal force to pull the water out of the barrel.
  • the ground teeth 1452 cooperate with the second thread 152 to drive the inner tube 12 to rotate at a large speed to quickly dry the water.
  • the inner tube 12 includes a first inner tube 121 having an inner thread 15 on the inner wall, and a second inner tube 122 sleeved outside the first inner tube 121.
  • the second inner tube 122 is The first inner tube 121 is long, and the mop head 2 is fixed to the second inner tube 122.
  • the preparation process of the first inner tube 121 is more complicated and costly than the second inner tube 122, and the first inner tube 122 and the first inner tube 121 can be shortened by the arrangement of the second inner tube 122.
  • the length of the inner tube 121 can be as long as necessary to reduce the cost.
  • the second inner tube 122 taking into consideration the appearance of the inner tube 12, the processing of the outer wall of the first inner tube 121 can be reduced or omitted, and the first inner tube 121 can be reduced. The difficulty of the process.
  • the first inner tube 121 includes an upper inner tube 1211 having a first thread 151 therein, a lower inner tube 1212 having a second thread 152 therein, and the upper inner tube 1211 and the lower inner tube
  • the 1212 is designed such that the first thread 151 smoothly mates with the second thread 152 such that the internal thread 15 forms a complete continuous thread in the up and down direction.
  • the inner tube 12 further includes an end cover 123 at one end of the second inner tube 122 for fixing the mop head 2, which prevents washing water, dust, and the like from entering the inner tube 12.
  • the end cover 123 and the second inner tube 122 are respectively provided with positioning strips 124 protruding inward in the radial direction to facilitate positioning and mounting with the mop head 2.
  • the mop lever 1 further includes an upper rod 16 sleeved on the operating end 111 of the outer tube 11, and a fixed lock fixedly connecting the upper rod 16 and the outer tube 11. 161.
  • an upper rod 16 sleeved on the operating end 111 of the outer tube 11, and a fixed lock fixedly connecting the upper rod 16 and the outer tube 11. 161.
  • the length of the outer tube 11 into the upper rod 16 is adjusted to a suitable length, and the fixed lock 161 is tightened to fix the two.
  • the upper rod 16 is further away from the end of the outer tube 11 and has an operating handle 162 for convenient use.
  • the mop 100 of the present invention sets the first thread 151 having a larger pitch above the second thread 152 having a smaller pitch.
  • the protruding tooth 1452 and the first thread are The 151 phase cooperates to drive the inner tube 12 to rotate, and the rotation speed is small to prevent the water from splashing out of the barrel.
  • the convex tooth 1452 moving from the top to the bottom first cooperates with the first thread 151 to drive the inner tube 12 to rotate at a small speed, so as to avoid the high-speed rotation of the centrifugal force to pull the water out of the barrel.
  • the ground teeth 1452 cooperate with the second thread 152 to drive the inner tube 12 to rotate at a large speed to quickly dry the water.

Abstract

本发明提供了一种拖把，包括拖把杆及拖把头，所述拖把杆包括外管、于所述外管内滑动的内管、连接所述外管与所述内管的智慧锁、驱动所述内管相对所述外管转动的驱动机构；所述驱动机构包括与所述外管相固定且位于所述内管内的驱动轴、设于所述内管的内壁上的内螺纹，所述驱动轴具有固定于所述驱动轴上的定齿轮、套设于所述驱动轴上且能够沿所述驱动轴的长度方向靠近或远离所述定齿轮的单向齿轮，所述单向齿轮设有沿其径向向外凸伸且与所述内螺纹相配合的若干凸齿，所述螺纹包括第一螺纹、位于所述第一螺纹下方且与所述第一螺纹平滑过渡的第二螺纹，所述第一螺纹的螺距大于所述第二螺纹的螺距。所述拖把通过第一螺纹和第二螺纹实现变速旋转。

Description

拖把 技术领域
本申请涉及一种清洁工具，尤其是一种较为省力气且可变速旋转的手压式拖把。
背景技术
现有技术中，通常采用拖把桶与拖把相配合使得拖把旋转，实现洗涤和甩干的功能；并且，通常在拖把头内增加变速装置调节拖把的转速，在洗涤时减小拖把的转速减小所需要的驱动力避免水溅出桶外；而在甩干时增大拖把的转速迅速甩干。然而，变速装置零件多，结构复杂，模具投资高、产品成本高。
有鉴于此，有必要提供一种改进的拖把，以解决上述技术问题。
发明内容
为了解决上述问题之一，本申请提出了一种较为省力气且可变速旋转的手压式拖把。
为了实现上述目的，本申请提供一种拖把，包括拖把杆及拖把头，所述拖把杆包括外管、于所述外管内滑动的内管、连接所述外管与所述内管的智慧锁、驱动所述内管相对所述外管转动和滑动的驱动机构；所述驱动机构包括与所述外管相固定且位于所述内管内的驱动轴、设于所述内管的内壁上的内螺纹，所述驱动轴具有固定于所述驱动轴上的定齿轮、套设于所述驱动轴上且能够沿所述驱动轴的长度方向靠近或远离所述定齿轮的单向齿轮，所述单向齿轮设有沿其径向向外凸伸且与所述内螺纹相配合的若干凸齿，所述螺纹包括第一螺纹、位于所述第一螺纹下方且与所述第一螺纹平滑过渡的第二螺纹，所述第一螺纹的螺距大于所述第二螺纹的螺距。
作为本发明的进一步改进，所述驱动机构还包括限位所述驱动轴相对 所述内管上下移动的限位机构。
作为本发明的进一步改进，所述限位机构包括设于所述内管顶端的限位件、设于所述驱动轴上靠近所述操作端的第一限位垫、设于所述驱动轴上靠近所述定齿轮的第二限位垫，所述限位件上设有供所述第一限位垫和所述第二限位垫之间的所述限位轴穿过的通孔。
作为本发明的进一步改进，所述驱动轴上还具有限制所述单向齿轮背离所述定齿轮移动的限位片。
作为本发明的进一步改进，所述内管包括内壁设有内螺纹的第一内管、套设于所述第一内管外的第二内管，所述第二内管比所述第一内管长，所述拖把头固定于所述第二内管上。
作为本发明的进一步改进，所述内管还包括位于所述第二内管固定所述拖把头的一端的端盖。
作为本发明的进一步改进，所述内螺纹为连续的螺纹。
作为本发明的进一步改进，所述外管的顶部向中心收拢形成收拢部，所述驱动轴还包括设于其顶端且直径大于所述收拢部直径的上限位圈、位于所述上限位圈下方且直径不大于所述收拢部的收紧部、位于所述收紧部下方且直径大于所述收拢部直径的下限位圈。
作为本发明的进一步改进，所述智慧锁包括具有沿其圆周方向间隔设置的锁紧片的锁紧件、位于所述锁紧件外的锁紧套。
作为本发明的进一步改进，所述拖把杆还包括套设于所述外管一端的上杆、固定连接所述上杆与所述外管的固定锁。
本发明的有益效果：本发明的拖把通过设置螺距较大的第一螺纹、位于第一螺纹下方的螺距较小的第二螺纹，一方面，在下压所述外管时，所述凸齿先与所述第一螺纹配合驱动所述内管旋转，启动力较小；当所述外管相对所述内管向下移动至所述凸齿与所述第二螺纹配合时，所述内管已经旋转起来，在所述内管的旋转惯性下所述凸齿与所述第二螺纹配合可以较为轻松地驱动所述内管继续以更高速度旋转。另一方面，洗涤所述拖把头时，所述凸齿与所述第一螺纹相配合驱动所述内管旋转，转速小，可防止所述水溅出桶外；甩干时，自上向下移动的所述凸齿先与所述第一螺纹 相配合驱动所述内管以较小的驱动力使拖把头获得初始速度，所述凸齿再与所述第二螺纹相配合驱动所述内管以较大速度旋转，快速将水甩干。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1为本发明较佳实施例的拖把的结构示意图；
图2为图1中的拖把的部分分解图；
图3为图1中的拖把杆移除上杆外的部分分解图；
图4为图1中的拖把杆移除上杆外的另一分解状态图；
图5为图1中的拖把杆移除驱动轴后的结构示意图；
图6为图5沿A-A方向的剖视图,图6中的A-A方向与图1中的A-A方向一致；
图7图4所示的驱动轴的结构示意图；
图8为图1中的拖把杆移除上杆且外管、内管沿A-A方向剖视后的示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，术语“上”、“下”“顶”、 “底”“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，除非另有规定和限定，需要说明的是，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是机械连接或电连接，也可以是两个元件内部的连通，可以是直接相连，也可以通过中间媒介间接相连，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。
如图1至图8所示为本发明较佳实施例的拖把100。请参阅图1和图2所示，所述拖把100包括手压式可旋转的拖把杆1及固定于所述拖把杆1上的拖把头2。所述拖把100与具有清洗篮和甩干篮的拖把桶(未图示)配合使用，手压可驱动拖把头2转动，便于洗涤和甩干所述拖把头2。
请参阅图3～图6及图8所示，所述拖把杆1包括外管11、于所述外管11内滑动的内管12、连接所述外管11与所述内管12的智慧锁13、驱动所述内管12相对所述外管11转动的驱动机构。所述外管11具有沿其长度方向分设于两侧的操作端111、开口端112，所述内管12具有自所述开口端112置入所述外管11内的滑动端、位于所述外管11外侧且与所述拖把头2相连接的连接端。
请参图3和图4所示，所述智慧锁13包括具有沿其圆周方向间隔设置的锁紧片131的锁紧件132、位于所述锁紧件132外的锁紧套133。使用时，先将所述锁紧件132置于所述外管11与所述内管12的连接处，再将所述锁紧套133套设于所述锁紧件132外；拧紧所述锁紧套133时，所述锁紧片131收紧并将所述外管11与所述内管12沿径向锁紧，此时所述智慧锁13为锁紧状态，所述外管11与所述内管12相对固定，可以拖地；松动所述锁紧套133时，所述锁紧片131松开，所述智慧锁13为解锁状态，所述外管11与所述内管12可相对滑动和转动,可洗涤和甩干所述拖把头2。
请参图3～图8所示，所述驱动机构包括与所述操作端111相固定且位于所述内管12内的驱动轴14、设于所述内管12的内壁上的内螺纹15。 所述驱动轴14与所述内螺纹15配合将所述外管11的直线运动转化为所述内管12的旋转运动，从而带动所述拖把头2转动，实现洗涤和甩干。
请参阅图3和图4所示，具体地，所述外管11的顶部向中心收拢形成直径略小于所述外管11的直径的收拢部113，所述驱动轴14还包括设于其顶端且直径略大于所述收拢部113的直径的上限位圈141、位于所述上限位圈141下方且直径不大于所述收拢部113的收紧部142、位于所述收紧部142下端且直径略大于所述收拢部113直径的下限位圈143，所述收拢部113被限定在所述上限位圈141与所述下限位圈143之间使得所述驱动轴14与所述外管11相固定。
请参图4，图7和图8所示，所述驱动轴14具有固定于所述驱动轴14上的定齿轮144、套设于所述驱动轴14上且能够沿所述驱动轴14的长度方向靠近或远离所述定齿轮144的单向齿轮145，所述定齿轮144、所述单向齿轮145分别具有相互啮合的第一啮合齿1441、第二啮合齿1451，且所述单向齿轮145设有沿其径向向外凸伸且与所述内螺纹15相配合的若干凸齿1452。自所述操作端111下压所述外管11时，所述单向齿轮145靠近所述定齿轮144，所述第一啮合齿1441与所述第二啮合齿1451啮合使得所述单向齿轮145相对所述驱动轴14固定而不会绕所述驱动轴14旋转，所述凸齿1452向下移动时通过所述内螺纹15驱动所述内管12旋转，所述内管12带动所述拖把头2旋转；所述驱动机构将所述外管11的上下位移转化为所述内管12的旋转运动从而带动所述拖把头2旋转，实现洗涤和甩干。
所述驱动轴14上还具有限制所述单向齿轮145背离所述定齿轮144移动的限位片146，自所述操作端111向上提起所述外管11时，所述定齿轮144和所述限位片146均随所述驱动轴14向上移动，所述第二啮合齿1451与所述第一啮合齿1441分离至所述单向齿轮145与所述限位片146抵接时，所述限位片146带动所述单向齿轮145向上移动。
所述驱动机构还包括限位所述驱动轴14相对所述内管12上下移动的限位机构。所述限位机构包括设于所述内管12顶端的限位件147、设于所述驱动轴14上靠近所述操作端111的第一限位垫148、设于所述驱动轴 14上靠近所述定齿轮144的第二限位垫149，所述限位件147上设有供所述第一限位垫148和所述第二限位垫149之间的所述限位轴穿过的通孔。当向下压所述外管11时，所述驱动轴14向下移动至所述第一限位垫148与所述限位件147抵持时，所述外管11被限制不能再继续向下移动；当向上提起所述外管11时，所述驱动轴14向上移动至所述第二限位垫149与所述限位件147抵持时，所述外管11被限制不能再继续向上移动。优选地，所述第一限位垫148和所述第二限位垫149为缓冲性能较好的橡胶材质,且所述限位结构还可以包括设于所述第一限位垫148、所述第二限位垫149分别朝向所述限位件147的一侧的缓冲垫片140。
所述限位件147为能够与所述第一限位垫148和所述第二限位垫149配合的任何结构，本实施例中，所述限位件147为设于所述内管12顶端且密封其顶端开口的上端盖123，所述上端盖123上具有供所述第一限位垫148和所述第二限位垫149之间的所述限位轴穿过的通孔。于其他实施例中，也可以将所述内管12的顶部设置成可与所述第二限位垫149配合的限位件147，已达成相同的效果。
所述内螺纹15为连续的螺纹，因此所述凸齿1452沿所述内螺纹15转动时顺畅无杂音；其中连续的螺纹指的是所述内螺纹15沿上下方向、圆周方向均为连续的，中间无间隔；也即所述凸齿1452沿所述内螺纹15移动的过程中始终位于所述内螺纹15内。进一步地，所述内螺纹15包括第一螺纹151、位于所述第一螺纹151下方且与所述第一螺纹151平滑过渡的第二螺纹152，所述第一螺纹151的螺距大于所述第二螺纹152的螺距。下压所述外管11时，所述凸齿1452先与螺距较大的所述第一螺纹151配合驱动所述内管12旋转，启动力较小；当所述外管11相对所述内管12向下移动至所述凸齿1452与所述第二螺纹152配合时，所述内管12已经旋转起来，在所述内管12的旋转惯性下所述凸齿1452与所述第二螺纹152配合可以较为轻松地驱动所述内管12继续旋转。
洗涤所述拖把头2时，所述凸齿1452与所述第一螺纹151相配合驱动所述内管12旋转，转速小，可防止所述水溅出桶外。甩干时，自上向下移动的所述凸齿1452先与所述第一螺纹151相配合驱动所述内管12以较 小的速度旋转，可避免高速旋转的离心力把水甩出桶外，弄脏地面；所述凸齿1452再与所述第二螺纹152相配合驱动所述内管12以较大速度旋转，快速将水甩干。
本实施例中，所述内管12包括内壁设有内螺纹15的第一内管121、套设于所述第一内管121外的第二内管122，所述第二内管122比所述第一内管121长，所述拖把头2固定于所述第二内管122上。一方面，所述第一内管121比所述第二内管122的制备工艺复杂且成本高，通过所述第二内管122与所述第一内管121的配合设置可以缩短所述第一内管121长度至需要的长度即可，降低成本。另一方面，通过所述第二内管122兼顾所述内管12的外观，可以减少或省去所述第一内管121的外壁美观化的处理工艺，降低了所述第一内管121的工艺难度。
具体地，所述第一内管121包括内设有第一螺纹151的上内管1211、内设有第二螺纹152的下内管1212，且所述上内管1211与所述下内管1212被设计为第一螺纹151与所述第二螺纹152平滑对接，使得所述内螺纹15沿上下方向形成完整的连续的螺纹。
另外，所述内管12还包括位于所述第二内管122固定所述拖把头2的一端的端盖123，可以防止洗涤水、灰尘等进入所述内管12内。所述端盖123与所述第二内管122上均设有沿径向向内凸伸的定位条124，便于与所述拖把头2定位安装。
请参图1和图2所示，所述拖把杆1还包括套设于所述外管11的操作端111的上杆16、固定连接所述上杆16与所述外管11的固定锁161。连接时先调节所述外管11伸入所述上杆16内的长度至合适的长度，在旋紧所述固定锁161将两者固定。另外，所述上杆16远离所述外管11的一端还具有操作手柄162，方便使用。
综上所述，本发明的拖把100将螺距较大的第一螺纹151设置于螺距较小的第二螺纹152上方，洗涤所述拖把头2时，所述凸齿1452与所述第一螺纹151相配合驱动所述内管12旋转，转速小，可防止所述水溅出桶外。甩干时，自上向下移动的所述凸齿1452先与所述第一螺纹151相配合驱动所述内管12以较小的速度旋转，可避免高速旋转的离心力把水甩 出桶外，弄脏地面；所述凸齿1452再与所述第二螺纹152相配合驱动所述内管12以较大速度旋转，快速将水甩干。
应当理解，虽然本说明书按照实施例加以描述，但并非每个实施例仅包含一个独立的技术方案，说明书的这种叙述方式仅仅是为清楚起见，本领域技术人员应当将说明书作为一个整体，各实施例中的技术方案也可以经适当组合，形成本领域技术人员可以理解的其他实施例。
上文所列出的一系列的详细说明仅仅是针对本发明的可行性实施例的具体说明，并非用以限制本发明的保护范围，凡未脱离本发明技艺精神所作的等效实施例或变更均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种拖把，包括拖把杆及拖把头，所述拖把杆包括外管、于所述外管内滑动的内管、连接所述外管与所述内管的智慧锁、驱动所述内管相对所述外管转动和滑动的驱动机构；其特征在于：所述驱动机构包括与所述外管相固定且位于所述内管内的驱动轴、设于所述内管的内壁上的内螺纹，所述驱动轴具有固定于所述驱动轴上的定齿轮、套设于所述驱动轴上且能够沿所述驱动轴的长度方向靠近或远离所述定齿轮的单向齿轮，所述单向齿轮设有沿其径向向外凸伸且与所述内螺纹相配合的若干凸齿，所述螺纹包括第一螺纹、位于所述第一螺纹下方且与所述第一螺纹平滑过渡的第二螺纹，所述第一螺纹的螺距大于所述第二螺纹的螺距。
  2. 根据权利要求1所述的拖把，其特征在于：所述驱动机构还包括限位所述驱动轴相对所述内管上下移动的限位机构。
  3. 根据权利要求2所述的拖把，其特征在于：所述限位机构包括设于所述内管顶端的限位件、设于所述驱动轴上靠近所述操作端的第一限位垫、设于所述驱动轴上靠近所述定齿轮的第二限位垫，所述限位件上设有供所述第一限位垫和所述第二限位垫之间的所述限位轴穿过的通孔。
  4. 根据权利要求1所述的拖把，其特征在于：所述驱动轴上还具有限制所述单向齿轮背离所述定齿轮移动的限位片。
  5. 根据权利要求1所述的拖把，其特征在于：所述内管包括内壁设有内螺纹的第一内管、套设于所述第一内管外的第二内管，所述第二内管比所述第一内管长，所述拖把头固定于所述第二内管上。
  6. 根据权利要求5所述的拖把，其特征在于：所述内管还包括位于所述第二内管固定所述拖把头的一端的端盖。
  7. 根据权利要求1所述的拖把，其特征在于：所述内螺纹为连续的螺纹。
  8. 根据权利要求1所述的拖把，其特征在于：所述外管的顶部向中心收拢形成收拢部，所述驱动轴还包括设于其顶端且直径大于所述收拢部直径的上限位圈、位于所述上限位圈下方且直径不大于所述收拢部的收紧 部、位于所述收紧部下方且直径大于所述收拢部直径的下限位圈。
  9. 根据权利要求1所述的拖把，其特征在于：所述智慧锁包括具有沿其圆周方向间隔设置的锁紧片的锁紧件、位于所述锁紧件外的锁紧套。
  10. 根据权利要求1所述的拖把，其特征在于：所述拖把杆还包括套设于所述外管一端的上杆、固定连接所述上杆与所述外管的固定锁。
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