CN105411713A - Reciprocating rotation head assembly used for electric cleaning tool - Google Patents
Reciprocating rotation head assembly used for electric cleaning tool Download PDFInfo
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- CN105411713A CN105411713A CN201510830062.XA CN201510830062A CN105411713A CN 105411713 A CN105411713 A CN 105411713A CN 201510830062 A CN201510830062 A CN 201510830062A CN 105411713 A CN105411713 A CN 105411713A
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- China
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- head assembly
- follower lever
- driving shaft
- rotation axis
- assembly follower
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
- A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3418—Rotation around the axis of the toothbrush handle
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- Health & Medical Sciences (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Cleaning In General (AREA)
- Brushes (AREA)
Abstract
The invention discloses a reciprocating rotation head assembly used for an electric cleaning tool. The reciprocating rotation head assembly comprises cleaning elements, a head assembly shell and a head assembly driven rod located in a hollow head assembly shell inner cavity of the shell. The driven rod is provided with a hollow cavity for containing a driving shaft. At least one driven rod notch is formed in the area surrounding the hollow cavity. At least one shell inner-side groove is distributed in the side wall of the inner cavity of the shell and used for containing corresponding driven rod protrusions arranged on the driven rod. The driven rod further comprises a partial-cylinder cavity area or a partial-cone cavity area, and the diameter of the area or the maximum diameter of a combined portion corresponding to the area is smaller than the diameter of a cylinder area of the driving shaft. When the driving shaft is not inserted into the driven rod of the head assembly, gaps exist between the grooves in the inner side of the shell and the protrusions of the driven rods in the direction perpendicular to the rotating axis of the driving shaft, and the length of the gaps in the direction perpendicular to the rotating axis of the driving shaft is larger than or equal to the single-side interference amount between the driven rod and the driving shaft of the head assembly.
Description
Technical field
The present invention relates to a kind of for power-driven device for cleaning, the head assembly that reciprocally rotates, more particularly, a kind of head assembly reciprocally rotated that there is safeguard construction, the power-driven device for cleaning of cleaning appliance duration of work head assembly disengaging handle can be prevented is related to.
Background technology
In power-driven device for cleaning, often by the interaction between driving shaft and draw bail, the torque of driving shaft is reliably passed to for clean head, and holding torque transmission under a load.In addition, the interaction between driving shaft and draw bail also must ensure both to be kept on the driving shaft by head in the operation process of cleaning appliance, can user be allowed to be removed from driving shaft by head easily when cleaning appliance inoperation again.
Such as, Authorization Notice No. is that the patent of invention of CN101902986B discloses one for brush for electric toothbrush/handle interface, and comprising: brush head assembly, its one end has the brush element for cleaning teeth; Driving shaft, its handle portion from toothbrush extends, and is driven into through the vibration of the selected anglec of rotation, and described driving shaft has one or more contact area, and interface surface is positioned in described contact area; Coupling member, it is positioned at the other end of described brush head assembly and has main part, this coupling member wherein said comprises one or more interface section, the described interface surface physical contact of described one or more interface section and described driving shaft when described driving shaft inserts described coupling member; And spring member, it orientates the part around described main part as, to apply enough large power to described main part and described coupling member, be enough to make the physical contact between described one or more interface section of described coupling member and described one or more contact area of described driving shaft in the operating process of described toothbrush, maintain the actual maintenance of described brush head assembly on described driving shaft, allow when described toothbrush inoperation user to be removed from described driving shaft by described brush head assembly simultaneously.
Summary of the invention
The object of this invention is to provide a kind of for power-driven device for cleaning, the head assembly with the reciprocating rotary of novel safeguard construction, at utensil duration of work, this safeguard construction can guarantee that head assembly does not depart from handle.In addition, this head assembly also has that volume is little, structure is simple, long service life and assembly manipulation advantage easily.
According to of the present invention for power-driven device for cleaning, the head assembly reciprocally rotated removably connects with handle, the driving shaft be in handle extends upwardly along its rotation axis direction handle of selling, and around its rotation axis reciprocating rotary, thus drive head assembly around driving shaft rotation axis crankmotion, head assembly comprises cleaning element, head assembly shell, be in the head assembly follower lever in the hollow head package shell inner chamber of head assembly shell, this head assembly follower lever is provided with the head assembly follower lever hollow cavity for holding driving shaft, at least one head assembly follower lever breach is being provided with in the region of hollow cavity, head assembly follower lever is caused to have elasticity along the radial direction of head assembly follower lever hollow cavity cross section, head assembly shell inner cavity sidewall is distributed with at least one head assembly shell inboard groove, this inboard groove is protruding in order to hold the corresponding heads assembly follower lever be located on head assembly follower lever, causes head assembly shell inboard groove to retrain the protruding movement along driving shaft rotation axis direction of head assembly follower lever, head assembly follower lever also comprises partial cylinder cavity or conical cavity body region, the diameter of this cylindrical cavity or conical cavity body region or the maximum gauge of corresponding bound fraction are less than the diameter of driving shaft cylinder or cone area or the maximum gauge of corresponding bound fraction, and the two is interference fit, when driving shaft is not inserted into head assembly follower lever, gap is there is perpendicular on driving shaft rotation axis direction between head assembly shell inboard groove and head assembly follower lever projection, this gap is being more than or equal to the monolateral amount of interference between head assembly follower lever and driving shaft perpendicular to the length on driving shaft rotation axis direction, this monolateral amount of interference can be 0.01mm to 1mm, is preferably 0.20mm.
Head assembly follower lever breach can along the directional spreding non-perpendicular to driving shaft rotation axis on head assembly follower lever.The preferred neutrality line of head assembly follower lever breach and the angle of driving shaft rotation axis are greater than-90 degree and are less than 90 degree; Or this angle is greater than-45 degree and is less than 45 degree; Or this angle is zero degree.The width of head assembly follower lever breach is 0.3mm-2mm, and preferably this width is 0.7mm-1.2mm.
Head assembly follower lever projection is positioned at the below of described head assembly follower lever breach along the top on the direction of driving shaft rotation axis.Head assembly follower lever is distributed with two head assembly follower levers symmetrically along head assembly housing axis protruding, and described head assembly follower lever projection is positioned at the below of described head assembly follower lever breach along the top on the direction of driving shaft rotation axis, correspondingly, head assembly shell inboard groove can be arranged on the sidewall of head assembly shell inner cavity.Head assembly shell inner cavity sidewall is distributed with two head assembly shell inboard grooves symmetrically along head assembly housing axis.
Each parts of described head assembly are all made of plastics.
Head assembly follower lever is furnished with the head assembly follower lever Elastic buckle of two lower end projections in lower part, this Elastic buckle and the driving shaft annular groove be located on driving shaft coordinate, cause the projection of described Elastic buckle lower end can enter driving shaft annular groove whole or in part, thus retrain head assembly follower lever relative to driving shaft along moving on handle drives axle rotation axis direction.
Utilize the present invention, when driving shaft insertion head assembly follower lever, owing to there is head assembly follower lever and the monolateral amount of interference of driving shaft, and due to head assembly follower lever breach formed the elasticity of head assembly follower lever projection and the cooperation of head assembly shell inboard groove and head assembly follower lever projection, head assembly follower lever projection can deeper be pushed head assembly shell inboard groove by driving shaft, make head assembly shell inboard groove limit head assembly follower lever projection more reliably to move along driving shaft rotation axis, thus guarantee at driving shaft insertion head assembly, when crankmotion made by beginning drive head assembly, head assembly follower lever does not remain in head assembly shell separatably, thus effectively prevent from head assembly shell from during movement departing from head assembly follower lever flying out and injure user.
Utilize the present invention, when driving shaft insertion head assembly follower lever, owing to there is monolateral amount of interference between head assembly follower lever and driving shaft, and due to head assembly follower lever breach formed the elasticity of head assembly follower lever projection and the cooperation of head assembly shell inboard groove and head assembly follower lever projection, driving shaft can make head assembly follower lever projection move along more going deep into head assembly shell inboard groove direction, be distributed in head assembly follower lever first plane on head assembly follower lever and head assembly follower lever second plane towards with coordinate separately be positioned at driving shaft first plane and driving shaft second plane motion on driving shaft or fit more closely, thus the pressure increased between head assembly follower lever and driving shaft and frictional force.In head assembly motor process, this frictional force increased contributes to head assembly follower lever and remains stable with driving shaft and connect, thus prevents from head assembly from during movement departing from driving shaft flying out and injure user.
Accompanying drawing explanation
Fig. 1 is the front elevation of power-driven device for cleaning of the present invention (as electric toothbrush);
Fig. 2 is the front elevation of the handle of the power-driven device for cleaning (as electric toothbrush) shown in Fig. 1;
The three-dimensional attitude view being fixed on the driving shaft of handle that Fig. 3 is the power-driven device for cleaning (as electric toothbrush) shown in Fig. 2;
Another three-dimensional attitude view of what Fig. 4 was the power-driven device for cleaning (as electric toothbrush) shown in Fig. 2 the be fixed on driving shaft of handle;
Fig. 5 is the three-dimensional attitude view of head assembly follower lever;
Fig. 6 is the head assembly follower lever elevational schematic view shown in Fig. 5;
Fig. 7 is the elevational schematic view of head assembly shell and cleaning element combination;
Fig. 8 is the three-dimensional attitude view of the head assembly of the power-driven device for cleaning (as electric toothbrush) shown in Fig. 1;
Fig. 9 is the side view of head assembly shown in Fig. 8;
Figure 10 is the schematic diagram of head assembly shell along A-A direction cutting in Fig. 9;
Figure 11 is for head assembly shown in Fig. 8 is along the schematic diagram of A-A direction cutting in Fig. 9;
Figure 12 is for head assembly shown in Fig. 8 is along B-B direction cutting in Fig. 9, the combination schematic diagram comprising whole head assembly follower lever and whole driving shaft and partial head package shell;
The combination schematic diagram that Figure 13 is the follower lever of head assembly shown in Fig. 8 and handle drives axle.
main Reference Numerals explanation
1 is handle
2 is head assembly
11 is driving shaft
12 is handle casing
13 is shift knob
21 is cleaning element
22 is head assembly shell
23 is head assembly follower lever
111 is driving shaft first plane
112 is driving shaft annular groove
113 is driving shaft cylindrical region
114 is driving shaft second plane
221 is head assembly shell inboard groove
222 is head assembly shell inner cavity
223 is that head assembly shell is protruding
224 is head assembly shell snap-fit grooves
231 is head assembly follower lever breach
232 is head assembly follower lever Elastic buckle
233 is that head assembly follower lever is protruding
234 is head assembly follower lever standing part
235 is head assembly follower lever standing part groove
236 is head assembly follower lever first plane
237 is head assembly follower lever second plane
238 head assembly follower lever partial cylinder cavity area
239 is head assembly follower lever hollow cavity
240 is the gap between head assembly shell and head assembly follower lever
L
1for driving shaft rotation axis
Detailed description of the invention
Hereafter also in more detail the present invention is described by reference to the accompanying drawings for the head assembly of electric toothbrush.Although only explain for electric toothbrush below, the present invention is not limited thereto.Obviously, the present invention also can be used for other power-driven device for cleanings, such as electronic brush for washing face etc.
The term that have employed statement relative space position in this application as " interior ", " outward ", " on ", D score, " top (or upper end) ", " bottom (or lower end) " etc. simply describe the mutual relation of an element as shown in the figure or feature and another element (one or more) or feature (one or more).In this manual, " interior " and " outward " is for the radial direction of power-driven device for cleaning, in its center contiguous is defined as, outside being defined as away from center; " on ", D score, " top ", " bottom ", " upper end ", " lower end " be for the driving shaft rotation axis of power-driven device for cleaning, when power-driven device for cleaning is in upright or duty that is that tilt, contiguous cleaning element end is defined as " on ", " top " or " upper end ", one end contrary with it is defined as D score, " bottom " or " lower end ".
Element is described as " ... on " or " being connected to " another element time, it can be located immediately at or be connected on another element, or can there is the element occupy therebetween.And element is described as " directly exist ... on " or " being directly connected to " another element time, then there is no element therebetween.For describe other words of relation between element be interpreted as having similar implication (such as " and ... between " with " and directly exist ... between " relatively, etc.).
Although employ in the application word first, second etc. multiple element or component part are described, these elements or component part should by the restrictions of these words.These words only for distinguishing an element or component part and another element or component part, and do not comprise " sequentially ".Therefore, the first element discussed below or component part are called that the second element or component part also do not exceed the spirit and scope of the present invention.
With reference to accompanying drawing 1-7, in an embodiment of the present invention, power-driven device for cleaning comprises the handle 1 that inside accommodates drive part and the head assembly 2 removably connected with handle 1, (shown in Fig. 2 is its exposed parts to the driving shaft 11 that drive head assembly 2 rotates, Fig. 3,4 show whole driving shaft) comprise along its rotation axis L
1direction protrudes upward the exposed parts of handle 1.Head assembly 2 comprises: cleaning element 21, head assembly shell 22, the head assembly follower lever 23 be in head assembly shell 22.Can be removably mounted on handle 1 by head assembly 2 by the cooperation of head assembly follower lever 23 and driving shaft 11, driving shaft 11 can around driving shaft rotation axis L
1crankmotion, thus drive head assembly 2 around driving shaft rotation axis L
1crankmotion.
With reference to Fig. 3-4, driving shaft 11 is distributed with driving shaft annular groove 112, driving shaft 11 is divided into upper and lower two parts by driving shaft annular groove 112, lower part can be connected in the drive mechanism in handle 1 regularly, thus driving shaft 11 can be driven around driving shaft rotation axis L by the drive mechanism in handle 1
1reciprocating rotary; Upper part is roughly cylinder, and the region presenting cylinder feature is driving shaft cylindrical region 113.Upper part is also distributed with driving shaft first plane 111 and driving shaft second plane 114 that are parallel to each other, that is, and the cylindrical masses that upper part is formed after being roughly and being cut to two planes be parallel to each other.Obviously, upper part also can be the cone that formed after being cut to two planes be parallel to each other or cuboid etc., adopts cone or cuboid all not to exceed scope of the present invention.
With reference to Fig. 5-6, head assembly follower lever 23 is distributed with head assembly follower lever hollow cavity 239, and this hollow cavity is used for holding driving shaft 11.A head assembly follower lever breach 231 is at least being distributed with around the region of head assembly follower lever hollow cavity 239, follower lever breach 231 makes head assembly follower lever 23 have elasticity along the radial direction of head assembly follower lever hollow cavity 239 cross section, be furnished with two in head assembly follower lever 23 lower part and have elastic head assembly follower lever Elastic buckle 232, these head assembly follower lever Elastic buckles 232 can flexibly be connected to driving shaft annular groove 112.Be distributed with two head assembly follower lever projections 233 on outside the head assembly follower lever of the close head assembly follower lever Elastic buckle 232 of head assembly follower lever 23, head assembly follower lever projection 233 is positioned at described head assembly follower lever breach 231 along driving shaft rotation axis L
1direction on the below on top; Head assembly follower lever first plane 236 coordinated with driving shaft first plane 111 is had in head assembly follower lever hollow cavity 239 circumferential distribution; Head assembly follower lever second plane 237 of two and the cooperation of driving shaft second plane 114 is furnished with in the punishment of head assembly follower lever hollow cavity 239 periphery proximity head parts follower lever breach 231; The head assembly follower lever partial cylinder cavity area 238 coordinated with the driving shaft cylindrical region 113 on driving shaft 11 is had in head assembly follower lever hollow cavity 239 circumferential distribution; Head assembly follower lever standing part 234 and head assembly follower lever standing part groove 235 is distributed with at head assembly follower lever 23 upper area.Although in this example, head assembly follower lever comprises partial cylinder cavity area 238, and obviously, also can replace the cylindrical cavity region in this example by conical cavity body region, this also falls within the scope of the present invention.Although in this example, driving shaft comprises partial cylinder body region 113, and obviously, also can replace the cylindrical region in this example by cone area, this also falls within the scope of the present invention.
With reference to Fig. 7-11, head assembly shell 22 is distributed with the head assembly shell inner cavity 222 of hollow, head assembly shell inner cavity 222 is used for holding head assembly follower lever 23.Be distributed with head assembly shell projection 223 in head assembly shell inner cavity 222 top, in order to head assembly follower lever standing part groove 235 mechanical fasteners.
In the present invention, head assembly shell 22 and head assembly follower lever 23 are all plastic, plastic is suitable for commercial production in enormous quantities and possesses good economy, but the mechanical fasteners power between plastic due to the creep properties of plastic material can passing in time and being deteriorated, the mechanical fasteners of thus simple plastic can not reliably, fixed with each other for a long time.
For this reason, head assembly shell inboard groove 221 can be distributed with on head assembly shell inner cavity 222 sidewall in the present invention, head assembly shell inboard groove 221 is in order to hold corresponding head assembly follower lever projection 233, and head assembly shell inboard groove 221 retrains head assembly follower lever projection 233 along driving shaft rotation axis L
1the movement in direction, both be coupled through groove 221 and protruding 223 cooperation realize, therefore, the constraint of head assembly shell inboard groove 221 pairs of head assembly follower lever projections 233 can not passing in time and being deteriorated.Head assembly follower lever 23 is distributed with two head assembly follower lever projections 233 symmetrically along head assembly housing axis, and described head assembly follower lever projection 233 is positioned at described head assembly follower lever breach 231 along driving shaft rotation axis L
1direction on the below on top, correspondingly, be arranged on head assembly shell inner cavity 222 sidewall at head assembly shell inboard groove 221.Preferably on head assembly shell inner cavity 222 sidewall, be distributed with two head assembly shell inboard grooves 221 symmetrically along head assembly housing axis.Head assembly shell inner cavity 222 lower end sidewall is distributed with two head assembly shell snap-fit grooves 224 in order to hold head assembly follower lever Elastic buckle 232.Head assembly shell snap-fit grooves 224 can be designed to be enough to allow head assembly follower lever Elastic buckle 232 with head assembly shell snap-fit grooves 224 without the mode of interfering along perpendicular to driving shaft rotation axis L
1direction motion.
With reference to Fig. 5, Figure 13, in this example, at head assembly follower lever 23 along driving shaft rotation axis L
1direction offers head assembly follower lever breach 231, head assembly follower lever breach 231 can make head assembly follower lever 23 be subject to perpendicular to driving shaft rotation axis L
1along perpendicular to driving shaft rotation axis L when the external force in direction or component
1direction produce displacement, when above-mentioned external force or component disappear, head assembly follower lever 23 can rely on the elastic return of own material to state when not applying described external force or component.In this description, this characteristic is referred to as head assembly follower lever 23 perpendicular to driving shaft rotation axis L
1direction has elasticity.As mentioned above, head assembly follower lever 23 is perpendicular to driving shaft rotation axis L
1direction on be provided with two head assembly follower lever projections 233, and described head assembly follower lever projection 233 is positioned at described head assembly follower lever breach 231 along driving shaft rotation axis L
1direction on the below on top, in like manner, because head assembly follower lever 23 is distributed with head assembly follower lever breach 231, head assembly follower lever projection 233 is perpendicular to driving shaft rotation axis L
1direction on also there is elasticity.Obviously, as long as the neutrality line of head assembly follower lever breach 231 is not orthogonal to driving shaft rotation axis L
1, head assembly follower lever 23 can be realized perpendicular to driving shaft rotation axis L
1direction on there is elasticity and head assembly follower lever projection 233 perpendicular to driving shaft rotation axis L
1direction on there is elasticity.Obviously, multiple head assembly follower lever breach 231 also has above-mentioned feature, as long as head assembly follower lever breach 231 neutrality line is not orthogonal to driving shaft rotation axis L
1, head assembly follower lever 23 can be realized perpendicular to driving shaft rotation axis L
1direction on there is elasticity and head assembly follower lever projection 233 perpendicular to driving shaft rotation axis L
1direction on there is elasticity.The respective neutrality line of described multiple head assembly follower lever breach 231 can be parallel to each other also can be interlaced.Do not repeat them here.
In the present case, the width of described head assembly follower lever breach 231 is 0.3mm-2mm, and the width of preferred head assembly follower lever breach 231 is 0.7mm-1.2mm.
With reference to Figure 13, head assembly follower lever 23 is furnished with two head assembly follower lever Elastic buckles 232 in lower part, and head assembly follower lever Elastic buckle 232 and driving shaft annular groove 112 coordinate.The projection being arranged on head assembly follower lever Elastic buckle 232 lower end can enter driving shaft annular groove 112 whole or in part, thus retrains head assembly follower lever 23 relative to driving shaft 11 along handle drives axle rotation axis L
1motion on direction.
With reference to Fig. 3, Fig. 4, Fig. 6, as mentioned above, the lower end of head assembly follower lever 23 is the head assembly follower lever hollow cavity 239 of hollow, the cavity cross-sectional profiles line of head assembly follower lever hollow cavity 239 is roughly made up of circular arc and two sections of straightways, and namely head assembly follower lever hollow cavity 239 is roughly by partial cylinder body side surface and two planes around forming.Head assembly follower lever hollow cavity 239 comprises head assembly follower lever first plane 236, head assembly follower lever second plane 237 and head assembly follower lever partial cylinder cavity area 238.Head assembly follower lever first plane 236 and driving shaft first plane 111 coordinate, thus constraint head assembly follower lever 23 is relative to the rotation of driving shaft 11.Head assembly follower lever second plane 237 and driving shaft second plane 114 coordinate, thus the rotation of constraint head assembly follower lever 23 relative drive shaft 11.Driving shaft cylindrical region 113 on head assembly follower lever partial cylinder cavity area 238 and driving shaft 11 coordinates.Driving shaft first plane 111 and driving shaft second plane 114 are distributed in the upper end of driving shaft 11, driving shaft first plane 111 and driving shaft second plane 114 are parallel to each other, and driving shaft first plane 111 or driving shaft second plane 114 are perpendicular to driving shaft rotation axis L
1direction on width be the 40%-100% of the diameter of driving shaft cylindrical region 113 correspondence.Preferably, driving shaft first plane 111 is perpendicular to driving shaft rotation axis L
1direction on width be 100% of diameter corresponding with this width place in driving shaft cylindrical region 113, driving shaft second plane 114 is perpendicular to driving shaft rotation axis L
1direction on width be 50% of diameter corresponding with this width place in driving shaft cylindrical region 113.Head assembly follower lever first plane 236 preferably coordinated with driving shaft first plane 111 is perpendicular to driving shaft rotation axis L
1direction on width slightly larger than or equal driving shaft first plane 111 perpendicular to driving shaft rotation axis L
1direction on width, head assembly follower lever second plane 237 coordinated with driving shaft second plane 114 is perpendicular to driving shaft rotation axis L
1direction on width slightly larger than or equal driving shaft second plane 114 perpendicular to driving shaft rotation axis L
1direction on width.
With reference to Fig. 3, Fig. 6, Figure 12, Figure 13, the physical dimension of head assembly follower lever partial cylinder cavity area 238 is less than the physical dimension of driving shaft cylindrical region 113, and the diameter of head assembly follower lever partial cylinder cavity area 238 is less than the diameter of driving shaft cylindrical region 113.More specifically, head assembly follower lever partial cylinder cavity area 238 and driving shaft cylindrical region 113 belong to interference fit.In this example, two head assembly follower lever partial cylinder cavity area 238 are relative to driving shaft rotation axis L
1symmetrical, two driving shaft cylindrical region 113 are relative to driving shaft rotation axis L
1symmetrical.The diameter 0.02mm to 2mm less of the diameter of corresponding driving shaft cylindrical region 113 of preferred head assembly follower lever partial cylinder cavity area 238, that is, head assembly follower lever partial cylinder cavity area 238 and driving shaft cylindrical region 113 are perpendicular to driving shaft rotation axis L
1on direction, monolateral amount of interference is 0.01mm to 1mm.In this description, define the monolateral amount of interference that above-mentioned monolateral amount of interference is head assembly follower lever and driving shaft.Preferably, described monolateral amount of interference is 0.20mm.
The present invention creatively arranges at least one head assembly shell inboard groove 221 on head assembly shell 22, head assembly follower lever 23 arranges at least one head assembly follower lever projection 233, and head assembly follower lever projection 233 is positioned at described head assembly follower lever breach 231 along driving shaft rotation axis L
1direction on the below on top, head assembly shell inboard groove 221 holds corresponding head assembly follower lever projection 233 respectively.Obviously, when driving shaft 11 is not inserted into head assembly follower lever 23, perpendicular to driving shaft rotation axis L between head assembly shell inboard groove 221 and head assembly follower lever projection 233
1direction exists gap 240.Preferred gap 240 is perpendicular to driving shaft rotation axis L
1length on direction is more than or equal to the monolateral amount of interference between head assembly follower lever 23 and driving shaft 11.
The present invention creatively on head assembly follower lever 23 along non-perpendicular to driving shaft rotation axis L
1directional spreding have at least one head assembly follower lever breach 231, the neutrality line of head assembly follower lever breach 231 and driving shaft rotation axis L
1angle be greater than-90 degree and be less than 90 degree.Preferably, the neutrality line of head assembly follower lever breach 231 and handle drives axle rotation axis L
1angle be greater than-45 degree and be less than 45 degree, more preferably, the neutrality line of head assembly follower lever breach 231 and driving shaft rotation axis L
1angle be zero degree.The respective neutrality line of described multiple head assembly follower lever breach 231 can be parallel to each other also can be interlaced.Head assembly follower lever breach 231 makes head assembly follower lever 23 perpendicular to driving shaft rotation axis L
1direction on there is elasticity, and make head assembly follower lever projection 233 perpendicular to driving shaft rotation axis L
1direction on there is elasticity.
In sum, according to the present invention, head assembly follower lever partial cylinder cavity area 238 and driving shaft cylindrical region 113 are perpendicular to driving shaft rotation axis L
1direction exists and interferes, the monolateral amount of interference of described interference is called as head assembly follower lever and the monolateral amount of interference of handle drives axle.Head assembly follower lever and the monolateral amount of interference of driving shaft are 0.01mm to 1mm, and head assembly follower lever breach 231 makes head assembly follower lever projection 233 perpendicular to driving shaft rotation axis L
1direction on there is elasticity, head assembly shell inboard groove 221 holds head assembly follower lever projection 233.When driving shaft 11 is not inserted into head assembly follower lever 23, the gap 240 between head assembly shell 22 and head assembly follower lever 23 is perpendicular to driving shaft rotation axis L
1length on direction is more than or equal to head assembly follower lever and the monolateral amount of interference of driving shaft.
When driving shaft 11 insertion head assembly follower lever 23, owing to there is head assembly follower lever and the monolateral amount of interference of driving shaft, and due to head assembly follower lever breach 231 formed the elasticity of head assembly follower lever projection 233 and the cooperation of head assembly shell inboard groove 221 and head assembly follower lever projection 233, head assembly follower lever projection 233 can deeper be pushed head assembly shell inboard groove 221 by driving shaft 11, makes head assembly shell inboard groove 221 limit head assembly follower lever projection 233 more reliably along driving shaft rotation axis L
1motion, thus guarantee when crankmotion made by driving shaft 11 insertion head assembly 2, beginning drive head assembly 2, head assembly follower lever 23 does not remain in head assembly shell 22 separatably, thus effectively prevents from head assembly shell 22 from during movement departing from head assembly follower lever 23 flying out and injure user.
With reference to Fig. 3, 4, 6, 12, 13, when driving shaft 11 insertion head assembly follower lever 23, owing to there is monolateral amount of interference between head assembly follower lever 23 and driving shaft 11, and due to head assembly follower lever breach 231 formed the elasticity of head assembly follower lever projection 233 and the cooperation of head assembly shell inboard groove 221 and head assembly follower lever projection 233, driving shaft 11 makes head assembly follower lever protruding 233 move along more going deep into head assembly shell inboard groove 221 direction, be distributed in head assembly follower lever first plane 236 on head assembly follower lever 23 and head assembly follower lever second plane 237 towards with coordinate separately be positioned at driving shaft first plane 111 on driving shaft 11 and driving shaft second plane 114 is moved or is fitted more closely, thus the pressure increased between head assembly follower lever 23 and driving shaft 11 and frictional force.In head assembly motor process, this frictional force increased contributes to head assembly follower lever 23 and remains stable with driving shaft 11 and connect, thus prevents from head assembly 2 from during movement departing from driving shaft 11 flying out and injure user.
Claims (14)
1. one kind for power-driven device for cleaning, the head assembly (2) that reciprocally rotates, and it removably connects with handle (1), is in driving shaft (11) in handle (1) along its rotation axis (L
1) direction protrudes upward handle (1), and around its rotation axis (L
1) reciprocating rotary, thus drive head assembly (2) around driving shaft rotation axis (L
1) crankmotion,
Wherein, described head assembly (2) comprises cleaning element (21), head assembly shell (22), be in the head assembly follower lever (23) in the hollow head package shell inner chamber (222) of head assembly shell (22), this head assembly follower lever (23) is provided with the head assembly follower lever hollow cavity (239) for holding driving shaft (11), at least one head assembly follower lever breach (231) is provided with in the region around described hollow cavity (239), head assembly follower lever (23) is caused to have elasticity along the radial direction of head assembly follower lever hollow cavity (239) cross section, described head assembly shell inner cavity (222) sidewall is distributed with at least one head assembly shell inboard groove (221), this inboard groove (221), in order to hold corresponding heads assembly follower lever projection (233) be located on head assembly follower lever (23), causes head assembly shell inboard groove (221) to retrain head assembly follower lever projection (233) along driving shaft rotation axis (L
1) movement in direction, described head assembly follower lever (23) also comprises partial cylinder cavity or conical cavity body region (238), the diameter of this cylindrical cavity or conical cavity body region (238) or the maximum gauge of corresponding bound fraction are less than the diameter of driving shaft cylinder or cone area (113) or the maximum gauge of corresponding bound fraction, and the two is interference fit, when driving shaft (11) is not inserted into head assembly follower lever (23), perpendicular to driving shaft rotation axis (L between head assembly shell inboard groove (221) and head assembly follower lever projection (233)
1) there is gap (240) in direction, this gap (240) are perpendicular to driving shaft rotation axis (L
1) length on direction is more than or equal to monolateral amount of interference between head assembly follower lever (23) and driving shaft (11).
2. head assembly (2) as claimed in claim 1, wherein, described head assembly follower lever breach (231) edge is non-perpendicular to driving shaft rotation axis (L
1) directional spreding on head assembly follower lever (23).
3. head assembly (2) as claimed in claim 2, wherein, the neutrality line of described head assembly follower lever breach (231) and driving shaft rotation axis (L
1) angle be greater than-90 degree and be less than 90 degree.
4. head assembly (2) as claimed in claim 3, wherein, the neutrality line of described head assembly follower lever breach (231) and driving shaft rotation axis (L
1) angle be greater than-45 degree and be less than 45 degree.
5. head assembly (2) as claimed in claim 4, wherein, the neutrality line of described head assembly follower lever breach (231) and driving shaft rotation axis (L
1) angle be zero degree.
6. head assembly (2) as claimed in claim 1 or 2, wherein, described head assembly shell inboard groove (221) is arranged on the sidewall of head assembly shell inner cavity (222).
7. head assembly (2) as claimed in claim 1 or 2, wherein, head assembly follower lever projection (233) is positioned at described head assembly follower lever breach (231) along driving shaft rotation axis (L
1) direction on the below on top.
8. the head assembly (2) as described in claim 1 or 2 or 7, wherein, head assembly follower lever (23) is distributed with two head assembly follower lever projections (233) symmetrically along head assembly housing axis, and described head assembly follower lever projection (233) is positioned at described head assembly follower lever breach (231) along driving shaft rotation axis (L
1) direction on the below on top, correspondingly, described head assembly shell inner cavity (222) sidewall is distributed with two head assembly shell inboard grooves (221) symmetrically along head assembly housing axis.
9. head assembly (2) as claimed in claim 1 or 2, wherein, described monolateral amount of interference is 0.01mm to 1mm.
10. head assembly (2) as claimed in claim 9, wherein, described monolateral amount of interference is 0.20mm.
11. head assemblies (2) according to any one of claim 1 to 5, wherein, the width of described head assembly follower lever breach (231) is 0.3mm-2mm.
12. head assemblies (2) as claimed in claim 11, wherein, the width of described head assembly follower lever breach (231) is 0.7mm-1.2mm.
13. head assemblies (2) as claimed in claim 1 or 2, wherein, each parts of described head assembly (2) are all made of plastics.
14. head assemblies (2) as claimed in claim 1 or 2, wherein, described head assembly follower lever (23) is furnished with the head assembly follower lever Elastic buckle (232) of two lower end projections in lower part, this Elastic buckle (232) and the driving shaft annular groove (112) be located on driving shaft (11) coordinate, cause the projection of described Elastic buckle (232) lower end can enter driving shaft annular groove (112) whole or in part, thus retrain head assembly follower lever (23) relative to driving shaft (11) along handle drives axle rotation axis (L
1) motion on direction.
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| CN201510830062.XA CN105411713B (en) | 2015-11-25 | 2015-11-25 | Reciprocating rotation head assembly used for electric cleaning tool |
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|---|---|---|---|
| CN201510830062.XA CN105411713B (en) | 2015-11-25 | 2015-11-25 | Reciprocating rotation head assembly used for electric cleaning tool |
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| CN105411713A true CN105411713A (en) | 2016-03-23 |
| CN105411713B CN105411713B (en) | 2017-04-12 |
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|---|---|---|---|
| CN201510830062.XA Active CN105411713B (en) | 2015-11-25 | 2015-11-25 | Reciprocating rotation head assembly used for electric cleaning tool |
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| CN105411713B (en) | 2017-04-12 |
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