CN110279333B - Disposable working head and electric tool - Google Patents
Disposable working head and electric tool Download PDFInfo
- Publication number
- CN110279333B CN110279333B CN201910655362.7A CN201910655362A CN110279333B CN 110279333 B CN110279333 B CN 110279333B CN 201910655362 A CN201910655362 A CN 201910655362A CN 110279333 B CN110279333 B CN 110279333B
- Authority
- CN
- China
- Prior art keywords
- working head
- disposable
- connecting rod
- hole
- handle
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 claims description 17
- 238000009434 installation Methods 0.000 claims description 9
- -1 polypropylene Polymers 0.000 claims description 6
- 239000004698 Polyethylene Substances 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 229920000573 polyethylene Polymers 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 206010011409 Cross infection Diseases 0.000 abstract description 3
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 3
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
- A46B13/02—Brushes with driven brush bodies or carriers power-driven carriers
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
- A47K7/00—Body washing or cleaning implements
- A47K7/04—Mechanical washing or cleaning devices, hand or mechanically, i.e. power operated
Landscapes
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Epidemiology (AREA)
- General Health & Medical Sciences (AREA)
- Portable Power Tools In General (AREA)
Abstract
The invention provides a disposable working head and an electric tool, wherein the disposable working head comprises: a working head body provided with a central hole; at least two wall parts connected to the working head main body, wherein the wall parts are formed by forming at least two notches on the side wall of the central hole, the at least two notches enable the at least two wall parts to be separated in the circumferential direction of the central hole, and when the disposable working head is mounted on the handle, the wall parts can be extruded and deformed by the handle and cannot automatically and completely recover the original state after being deformed; and the buckling part is arranged on the working head main body and/or the wall part, and the disposable working head can be installed on the handle through the buckling part. By adopting the technical scheme, the wall part of the disposable working head is spread and deformed when being mounted on the handle, and the wall part cannot automatically and completely recover after being deformed, so that the working head is difficult to be mounted and used again after being dismounted from the handle, and the problem of cross infection caused by repeated use of the disposable appliance can be solved.
Description
Technical Field
The invention belongs to the field of disposable products, and particularly relates to a disposable working head and an electric tool.
Background
For some sanitary or medical appliances, in particular for combined use of disposable appliances, the disposable appliance used cannot be reused after use, and the user needs to be informed that the disposable appliance needs to be discarded, but some users can reuse the disposable appliance for saving money and trouble, which can lead to an increased risk of cross infection.
Disclosure of Invention
For the above situation, the solution is to make the disposable part used by the user not easy to be installed again and only scrapped.
The present invention is based on the above-mentioned problems of the prior art, and proposes a disposable working head which allows a user to be mounted on a corresponding tool before use, and which is not easily mounted on the tool again after use.
The invention proposes a disposable working head comprising:
the working head comprises a working head main body, a working head guide rail and a working head guide rail, wherein the working head main body is provided with a central hole;
At least two wall parts connected to the head main body, the at least two wall parts being formed by forming at least two notches in a side wall of the center hole, the at least two notches separating the at least two wall parts in a circumferential direction of the center hole, the wall parts being capable of being deformed by the handle in a pressing manner and not automatically and completely returning to an original state after being deformed when the disposable head is mounted to the handle; and
And the buckling part is arranged on the working head main body and/or the wall part, and the disposable working head can be installed on the handle through the buckling part.
Preferably, the central hole is a stepped hole including a first hole and a second hole, the first hole is located at an axial front end of the second hole, and the wall portion is a side wall of the second hole.
Preferably, the cross section of the first hole is non-revolution.
Preferably, the work head main body is provided with a cover portion formed in an umbrella shape and surrounding the wall portion.
Preferably, the fastening portion is disposed at a rear end of the wall portion, and the fastening portion is a bump.
Preferably, the wall and/or the connection of the wall to the head body is made of polypropylene or polyethylene material.
The present invention also proposes an electric tool including:
The handle comprises a cavity, and a through hole for receiving the disposable working head is formed in the front end of the handle;
The connecting rod is arranged at the front end of the handle and is used for mounting the disposable working head, the connecting rod is provided with a mounting part, the mounting part is tapered from the rear end to the front end of the electric tool, and when the disposable working head is mounted on the connecting rod, the mounting part can enable the disposable working head to be extruded and deformed;
The motor is arranged inside the handle and is connected with the connecting rod; and
The disposable working head according to any one of the above technical solutions, which can be clamped to the connecting rod.
Preferably, the maximum radial dimension of the mounting portion is larger than the radial dimension of the through hole, and the minimum radial dimension of the mounting portion is smaller than the radial dimension of the through hole.
Preferably, the connecting rod is provided with a power transmission part, the power transmission part is located at the front end of the installation part, the cross section of the power transmission part is in a non-rotary shape, and the connecting rod can drive the disposable working head to rotate through the cooperation of the power transmission part and the first hole.
Preferably, the connecting rod is provided with a step part, the step part is positioned at the rear end of the mounting part, and the disposable working head is mounted on the connecting rod through the cooperation of the step part and the clamping part.
By adopting the technical scheme, the wall part of the disposable working head is spread and deformed when being mounted on the handle, and the wall part cannot automatically and completely recover after being deformed, so that the working head is difficult to be mounted and used again after being dismounted from the handle, and the problem of cross infection caused by repeated use of the disposable appliance can be solved.
Drawings
Fig. 1 shows an exploded view of a power tool according to an embodiment of the present invention.
Fig. 2 shows a partial cross-sectional view of a power tool according to an embodiment of the invention.
Fig. 3 shows a partial enlarged view of the M portion in fig. 2.
Fig. 4 shows a schematic structural view of a disposable working head of a power tool according to an embodiment of the present invention.
Fig. 5 shows a partial cross-sectional view of a disposable working head of a power tool according to an embodiment of the present invention.
Fig. 6a to 6d show schematic views of the installation and removal of the disposable working head of the power tool with the connecting rod according to the embodiment of the present invention.
Description of the reference numerals
10 Handle 101 through hole 20 disposable working head 30 connecting rod 301 installation part 302 power transmission part 303 step part 40 motor
1 The main body 11 center hole 111 first hole 112 second hole
2 Wall portions
3 Notch
4 Fastener part
5 Cover part
Aaxial R radial C circumferential F front and rear.
Detailed Description
Exemplary embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that these specific illustrations are for the purpose of illustrating how one skilled in the art may practice the invention, and are not intended to be exhaustive of all of the possible ways of practicing the invention, nor to limit the scope of the invention.
If not specifically stated, the axial direction a refers to the axial direction of the power tool, the radial direction R refers to the radial direction of the power tool, the circumferential direction C refers to the circumferential direction of the power tool, and the axial direction, the radial direction, and the circumferential direction of the power tool are identical to those of the disposable working head 20. The front F is directed to the front side in the axial direction a, i.e., the end of the power tool on which the working head is mounted, and the rear B is directed to the rear side in the axial direction a.
As shown in fig. 1 to 3, the present invention proposes a power tool including a handle 10 and a disposable working head 20, such as a disposable cleaning head, the disposable working head 20 being detachably connected to the handle 10 by an insertion. The handle 10 is provided with a connecting rod 30 and a motor 40 inside, the connecting rod 30 is connected to the motor 40, and the disposable working head 20 is connected to the connecting rod 30.
As shown in fig. 3 to 6d, the disposable head 20 includes a head body 1, a wall portion 2, a notch 3, a fastening portion 4, and a cover portion 5.
The head body 1 may be formed in a columnar shape, for example, the head body 1 is columnar, and the axial rear end of the head body 1 is provided with a center hole 11. The central hole 11 is a stepped hole including a first hole 111 and a second hole 112, the first hole 111 is located at an axial front end of the second hole 112, that is, the second hole 112 is close to an opening of the central hole 11, and the first hole 111 is a non-circular hole, for example, a cross section of the first hole 111 is triangular or rectangular (including rounded rectangle), and the second hole 112 may be a circular hole. The first hole 111 is for cooperation with the connection rod 30 (power transmission portion 302) to thereby drive the disposable working head 20 to rotate through the connection rod 30.
As shown in fig. 4 and 5, the side wall of the second hole 112 is provided with at least two notches 3, the notches 3 separating the side wall of the second hole 112 in the circumferential direction C of the central hole 11 to form at least two wall portions 2. Specifically, the notch 3 is elongated extending in the axial direction a, and 3 notches 3 are provided in the circumferential direction C on the side wall of the second hole 112, thereby forming 3 tile-shaped wall portions 2 spaced apart in the circumferential direction C.
The wall 2 and/or the portion of the wall 2 that connects with the head body 1 are made of a material having toughness, such as polypropylene (PP) or Polyethylene (PE). It will be appreciated that the free end of the wall portion 2 may be deformed by being folded radially outwardly when subjected to an external force and may not automatically return to its original state completely after deformation. It will be appreciated that a ductile material may recover a portion of the deformation after being deformed under force, but may not automatically recover the unstressed deformed state.
The wall portion 2 is provided with a snap-in portion 4, and when the disposable working head 20 and the connecting rod 30 are connected together, the snap-in portion 4 is snapped into engagement with the stepped portion 303 of the connecting rod 30. Specifically, the fastening portion 4 may be disposed at a free end of the wall portion 2, and the fastening portion 4 may be a bump.
It will be appreciated that the fastening portion 4 may be disposed at other positions, for example, the fastening portion 4 may be disposed at the bottom of the central hole 11, so long as the fastening portion 4 and the step portion 303 cooperate to enable the connecting rod 30 and the disposable working head 20 to be fastened.
The cover 5 is connected to the peripheral wall of the head body 1, and the cover 5 is formed in an umbrella shape so that the cover 5 is closer to the rear end as it approaches the radially outer side, and the cover 5 surrounds the rear end of the head body 1 to cover the wall 2, thereby preventing the wall 2 from being manually moved when the disposable head 20 is mounted. When the disposable working head 20 and the connecting rod 30 are connected together, the cover 5 may cover the front end of the handle 10.
As shown in fig. 1 to 3, the handle 10 is a cylindrical cavity, and a connecting rod 30 and a motor 40 are provided inside the handle 10, and the connecting rod 30 is located at one end, for example, the front end, of the handle 10. The connecting rod 30 may be driven to vibrate or rotate by a motor 40 connected to the inside of the handle 10, the disposable working head 20 is inserted into the connecting rod 30, and the power tool is coaxial with the working head 20. The front end of the handle 10 is provided with a through hole 101, and the through hole 101 is used for receiving the disposable head 20, so that the disposable head 20 is inserted into the through hole 101 to be connected with the connecting rod 30. The connecting rod 30 is provided with a mounting portion 301, the mounting portion 301 being located at an axial front end of the connecting rod 30, the mounting portion 301 tapering from a rear end to a front end into a cone shape, for example, a cone shape. The mounting portion 301 forms a step portion 303, the step portion 303 may be located at a rear end of the mounting portion 301, and the step portion 303 may be engaged with the engagement portion 4 of the disposable working head 20. The connection rod 30 is provided with a power transmission portion 302, the power transmission portion 302 is located at the front side of the mounting portion 301, the front end of the connection rod 30 may protrude from the through hole 101, and the protruding portion may be used to position the disposable head 20 when the disposable head 20 is mounted, for example, a portion of the power transmission portion 302 protrudes from the through hole 101. The motor 40 may drive the connecting rod 30 to rotate, and the cross section of the power transmission part 302 is in a non-revolution shape, for example, the cross section of the power transmission part 302 is triangular or rectangular (including rounded rectangle), so that the power transmission part 302 and the first hole 111 cooperate to be capable of transmitting torque to drive the disposable working head 20 to rotate.
As shown in fig. 3, the maximum radial dimension of the mounting portion 301 is larger than the radial dimension of the through hole 101, and the minimum radial dimension of the mounting portion 301 is smaller than the radial dimension of the through hole 101.
It will be appreciated that when the disposable working head 20 is connected to the mounting portion 301, the wall portion 2 is located radially outside the mounting portion 301, the wall portion 2 is spread by the mounting portion 301, and the wall portion 2 is deformed or cracked due to the spreading, so that the maximum radial dimension of the wall portion 2 is larger than the radial dimension of the through hole 101. When the disposable head 20 is detached, the through hole 101 can press the tapered surface of the wall portion 2 to deform the wall portion 2, and the disposable head 20 can be pulled out of the through hole 101. But after the extraction of the disposable head 20, the maximum radial dimension of the wall portion 2 after shape recovery is still greater than the radial dimension of the through hole 101. Considering that the wall portion 2 has a certain thickness, even if the maximum radial dimension of the mounting portion 301 is equal to or slightly smaller than the radial dimension of the through hole 101, the maximum radial dimension of the wall portion 2 after being expanded can be made larger than the radial dimension of the through hole 101. When the disposable head 20 is to be reinserted into the through hole 101, the wall portion 2 will abut against the periphery of the through hole 101, so that the wall portion 2 cannot be inserted into the through hole 101, and the disposable head 20 cannot be reinstalled. It will be appreciated that, with the detached disposable head 20, even if the wall portion 2 can be inserted into the through hole 101, since the wall portion 2 has been deformed or cracked, the catching portion 4 cannot be firmly caught to the stepped portion 303, and the disposable head 20 cannot be reliably reinstalled, resulting in the disposable head 20 not being reused.
Referring to fig. 6a to 6d, the process of mounting and dismounting the disposable working head 20 to and from the connection rod 30 is described.
As shown in fig. 6a and 6b, the central hole 11 of the disposable head 20 is aligned with the through hole 101 and the power transmission portion 302 protruding out of the handle 10. The wall portion 2 is inserted into the through hole 101, and the connection rod 30 is inserted into the center hole 11. Since the mounting portion 301 is tapered, when the connecting rod 30 is inserted into the center hole 11, the mounting portion 301 presses the wall portion 2 to be folded and deformed radially outward, the wall portion 2 is spread, and the engaging portion 4 is hooked on the stepped portion 303, so that the disposable head 20 is mounted on the connecting rod 30.
As shown in fig. 6c and 6d, after the disposable working head 20 is used, the disposable working head 20 is directly pulled out by force, and the disposable working head 20 cannot be reinstalled because the wall portion 2 is already spread to cause deformation or cracking and the maximum radial dimension of the wall portion 2 after being spread is larger than the radial dimension of the through hole 101. Also, due to the shielding of the cover 5, during the insertion process, it is not easy to manually move the wall portion 2, to insert the wall portion 2 into the through hole 101, and even if the wall portion 2 is inserted into the through hole 101, it is difficult to stably engage the locking portion 4 with the stepped portion 303. It is therefore necessary to replace the disposable head 20 with a new one, making the disposable head 20 difficult to reuse, reducing or avoiding the risk of contamination due to the secondary use of the disposable.
Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
Claims (8)
1. A disposable working head (20), characterized in that the disposable working head (20) comprises:
a working head main body (1), wherein the working head main body (1) is provided with a central hole (11);
At least two wall parts (2), wherein the wall parts (2) are connected to the working head main body (1), the at least two wall parts (2) are formed by opening at least two notches (3) on the side wall of the central hole (11), the at least two notches (3) separate the at least two wall parts (2) in the circumferential direction (C) of the central hole (11), and when the disposable working head (20) is mounted on a handle (10), the wall parts (2) can be extruded and deformed by the handle (10) and cannot automatically and completely recover the original shape after being deformed; and
A fastening part (4), wherein the fastening part (4) is arranged on the working head main body (1) and/or the wall part (2), the disposable working head (20) can be installed on the handle (10) through the fastening part (4),
The central hole (11) is a stepped hole comprising a first hole (111) and a second hole (112), the first hole (111) is positioned at the axial front end of the second hole (112), the wall part (2) is a side wall of the second hole (112),
The working head body (1) is provided with a cover (5), and the cover (5) is formed in an umbrella shape and surrounds the wall (2).
2. Disposable working head according to claim 1, characterized in that the cross section of the first hole (111) is of non-revolving shape.
3. Disposable working head according to claim 1, characterized in that the snap-in part (4) is arranged at the rear end of the wall part (2), the snap-in part (4) being a bump.
4. Disposable working head according to claim 1, characterized in that the wall part (2) and/or the connection part of the wall part (2) with the working head body (1) is made of polypropylene or polyethylene material.
5. An electric power tool, characterized in that the electric power tool comprises:
The handle (10), the said handle (10) includes the cavity, the front end of the said handle (10) has through holes (101) used for receiving the disposable working head (20);
A connecting rod (30), wherein the connecting rod (30) is arranged at the front end of the handle (10), the connecting rod (30) is used for installing the disposable working head (20), the connecting rod (30) is provided with an installation part (301), the installation part (301) is tapered from the rear end (B) of the electric tool to the front end, and when the disposable working head (20) is installed on the connecting rod, the installation part (301) can enable the disposable working head (20) to be extruded and deformed;
a motor (40), wherein the motor (40) is arranged inside the handle (10), and the motor (40) is connected to the connecting rod (30); and
The disposable working head (20) of any one of claims 1 to 4, the disposable working head (20) being capable of being clamped to the connecting rod (30).
6. The power tool according to claim 5, wherein a maximum radial dimension of the mounting portion (301) is larger than a radial dimension of the through hole (101), and a minimum radial dimension of the mounting portion (301) is smaller than the radial dimension of the through hole (101).
7. The electric tool according to claim 5, wherein the connecting rod (30) is provided with a step portion (303), the step portion (303) is located at a rear end of the mounting portion (301), and the disposable working head (20) is mounted to the connecting rod (30) by cooperation of the step portion (303) and the fastening portion (4).
8. An electric power tool, characterized in that the electric power tool comprises:
The handle (10), the said handle (10) includes the cavity, the front end of the said handle (10) has through holes (101) used for receiving the disposable working head (20);
A connecting rod (30), wherein the connecting rod (30) is arranged at the front end of the handle (10), the connecting rod (30) is used for installing the disposable working head (20), the connecting rod (30) is provided with an installation part (301), the installation part (301) is tapered from the rear end (B) of the electric tool to the front end, and when the disposable working head (20) is installed on the connecting rod, the installation part (301) can enable the disposable working head (20) to be extruded and deformed;
a motor (40), wherein the motor (40) is arranged inside the handle (10), and the motor (40) is connected to the connecting rod (30); and
The disposable working head (20) of claim 1 or 2, said disposable working head (20) being capable of being snapped onto said connecting rod (30),
The connecting rod (30) is provided with a power transmission part (302), the power transmission part (302) is positioned at the front end of the mounting part (301), the cross section of the power transmission part (302) is in a non-rotary shape, and the connecting rod (30) can drive the disposable working head (20) to rotate through the cooperation of the power transmission part (302) and the first hole (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655362.7A CN110279333B (en) | 2019-07-19 | 2019-07-19 | Disposable working head and electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910655362.7A CN110279333B (en) | 2019-07-19 | 2019-07-19 | Disposable working head and electric tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110279333A CN110279333A (en) | 2019-09-27 |
| CN110279333B true CN110279333B (en) | 2024-07-02 |
Family
ID=68023536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910655362.7A Active CN110279333B (en) | 2019-07-19 | 2019-07-19 | Disposable working head and electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110279333B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110742727A (en) * | 2019-10-29 | 2020-02-04 | 慈溪赛嘉电子有限公司 | Ear cleaner |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211270409U (en) * | 2019-07-19 | 2020-08-18 | 慈溪赛嘉电子有限公司 | Disposable working head and electric tool |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8756819B2 (en) * | 2010-04-12 | 2014-06-24 | Bettcher Industries, Inc. | Power operated rotary knife with disposable blade support assembly |
| CN203970481U (en) * | 2014-05-30 | 2014-12-03 | 重庆西山科技有限公司 | Disposable use skull drill bit |
| FR3024833B1 (en) * | 2014-08-13 | 2016-09-09 | In2Bones | GRIPPER FOR SURGICAL TOOL, METHOD AND MACHINE FOR MANUFACTURING SUCH A GRIPPING HANDLE |
| CN206120467U (en) * | 2016-06-03 | 2017-04-26 | 宁波和平鸽口腔医疗器材有限公司 | High speed turbine dental handpiece who is fit for disposable safe handling |
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2019
- 2019-07-19 CN CN201910655362.7A patent/CN110279333B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN211270409U (en) * | 2019-07-19 | 2020-08-18 | 慈溪赛嘉电子有限公司 | Disposable working head and electric tool |
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| CN110279333A (en) | 2019-09-27 |
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