CN108214381A - Direct Action Type accumulation of energy screwdriver - Google Patents
Direct Action Type accumulation of energy screwdriver Download PDFInfo
- Publication number
- CN108214381A CN108214381A CN201711337004.9A CN201711337004A CN108214381A CN 108214381 A CN108214381 A CN 108214381A CN 201711337004 A CN201711337004 A CN 201711337004A CN 108214381 A CN108214381 A CN 108214381A
- Authority
- CN
- China
- Prior art keywords
- knife
- cutter hub
- handle
- inner slide
- energy
- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B15/00—Screwdrivers
- B25B15/06—Screwdrivers operated by axial movement of the handle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Harvester Elements (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The invention discloses a kind of Direct Action Type accumulation of energy screwdrivers, including handle of a knife, inner slide and cutter hub, it is hollow cavity inside the handle of a knife, handle of a knife inner wall is equipped with the helix of protrusion, inner slide lateral surface sets helix groove, inner slide center is equipped with the centre bore with cutter hub diameter matches, one side end face of inner slide is equipped with one-directional rotation teeth, inner slide is rotatably connected by helix groove with handle of a knife, inner slide is set in cutter hub top, by one-directionally rotating teeth connection is matched with teeth of the cutter hub outer wall on the flange of upper end surface, when pressing handle of a knife, the linear motion of handle of a knife is changed into the rotary motion of cutter hub by inner slide.The linear motion of handle of a knife is converted to the rotation of cutter hub by the spiral rotating mechanism that is set in handle of a knife by the present invention, realizes the action of pressing the turn of the screw, easy to operate.Accumulating mechanism on cutter hub is set, can first carry out pressing energy storage, the energy of storage is then again converted to rotation to realize the fastening of screw.
Description
Technical field
The invention belongs to hand-operated tools fields, and in particular to a kind of Direct Action Type accumulation of energy screwdriver.
Background technology
Screwdriver is a kind of tool for twisting screw to force its in place, and usually there are one thin sphenocephalies, can insert
Enter in the line of rabbet joint or recess of screw cap.It is known as " screwdriver " in Jing-jin-ji region Shanxi Henan and Shaanxi dialect, the ground such as Anhui and Hubei claim
For " bottle opener ", central and west regions are known as " being cut ", and Yangtze River Delta Area is known as " turn screw ".Screwdriver can be divided by different head dummys
One word, cross, rice word, star-like (computer), square toes, turret head, Y types head etc., wherein a word and cross are in our lives
It is most common, it will be used as installation, maintenance is this kind of, it may be said that as long as the place for having screw will use screwdriver.Turret head
It is few, allen wrench is commonly used, as screws a lot of on some machines all band Hexagon holes, multi-angle is facilitated to make power.It is star-like
Big also few of size, it is small it is star-like be usually used in overhauling mobile phone, hard disk, notebook etc., we are small screwdriver clock and watch
Batch, star-like T6, T8 are commonly used, cross PH0, PH00 are this kind of.Wherein Philip's head screw and Phillips screwdriver are by Henry Philips
(Henry Phillips) is invented in eighties of last century the '30s.It is firstly used on the assembly line of automobile.Wherein cross spiral shell
Silk and Phillips screwdriver are also referred to as Phillips Screw and Philips screwdriver.Screwdriver is possessed to the end of specialization shape during use
The top pit of head alignment screw is fixed, and then starts to rotate handle.According to specification standards, it is rotated clockwise as panelling；
Counterclockwise rotation is then to ease out (under rare occasion on the contrary).
But traditional screwdriver is all mainly rotation, rotation needs are continuous in one's hands, compare the hand that rubs, in addition, sometimes
Operating space is limited, and rotational handle is inconvenient.
Invention content
The technical problem to be solved in the invention is to provide a kind of manipulation simplicity, can complete to twist by linear motion back and forth
The Direct Action Type accumulation of energy screwdriver of screw process.
To solve the above problems, the technical solution used in the present invention is：
A kind of Direct Action Type accumulation of energy screwdriver is hollow chamber including handle of a knife, inner slide and cutter hub, inside the handle of a knife
Body, handle of a knife inner wall are equipped with the helix of protrusion, and inner slide lateral surface setting helix groove, inner slide center is equipped with and cutter hub diameter
Matched centre bore, a side end face of inner slide are equipped with one-directional rotation teeth, and inner slide is rotated by helix groove and handle of a knife
Connection, inner slide is set in cutter hub top, by one-directionally rotating teeth and teeth of the cutter hub outer wall on the flange of upper end surface
The linear motion of handle of a knife, when pressing handle of a knife, is changed into the rotary motion of cutter hub by inner slide by matching connection.
Further, bottom cover, head cover and spring are further included, the top cap central is equipped with and the matched centre bore of cutter hub,
And head cover is threadedly attached in handle of a knife lower end, and cutter hub one end passes through head cover and by the flange on cutter hub by cutter hub and knife
Handle links together, and bottom cover is threadedly attached in knife upper end portion, and spring is between inner slide and bottom cover.
Further, the bottom cover includes：Bottom cover body, bearing, bracket and brake pad, side wall is equipped in the bottom cover body
Connection screw thread, bracket are connect by bearing with bottom cover body, and brake pad is fixed on bracket, and the bearing is disk bearing or depth
Ditch ball bearing, when for disk bearing, two disc faces of disk bearing are connect respectively with bottom cover body and bracket by spring force
Together, when for deep groove ball bearing, the inner ring and outer ring of deep groove ball bearing is fixedly connected respectively with bottom cover body and bracket.
Further, the head cover includes：Head cover body and bearing, the bearing are disk bearing or deep-groove ball axis
It holds, when for disk bearing, two disc faces of disk bearing pass through spring force with the flange on cutter hub and head cover body respectively
Link together, when for deep groove ball bearing, the inner ring and outer ring of deep groove ball bearing respectively with the method on head cover body and cutter hub
Orchid is fixedly connected.
Further, the cutter hub includes：Interior dead axle, outer shaft, angle pedestal bearing, accumulation of energy sphere, tension spring, slip ring,
Retainer ring and cutter head, wherein outer shaft are equipped with centre bore, and interior dead axle is fixed on by angle pedestal bearing in the centre bore of outer shaft, store
Energy sphere is fixed on by connecting rod in retainer ring, and retainer ring is fixed on outer shaft, and tension spring one end, which is fixed on connecting rod, to be leaned on
One end of nearly accumulation of energy sphere, the tension spring other end are fixed on slip ring, and slip ring is set on outer shaft, and cutter head is fixed on
Default shaft end.
It is using advantageous effect caused by above-mentioned technical proposal：
The linear motion of handle of a knife is converted to the rotation of cutter hub by the spiral rotating mechanism that is set in handle of a knife by the present invention,
The action of pressing the turn of the screw is realized, it is easy to operate.Accumulating mechanism on cutter hub is set, can first carry out pressing energy storage, then
The energy of storage is again converted to rotation to realize the fastening of screw.
Description of the drawings
Fig. 1 is Direct Action Type accumulation of energy screwdriver structure schematic diagram of the present invention；
Fig. 2 is screwdriver bottom cover structure schematic of the present invention；
Fig. 3 is screwdriver cap structure schematic diagram of the present invention；
Fig. 4 is inner slide dimensional structure diagram of the present invention；
Fig. 5 is structure of the cutter body schematic diagram of the present invention；
Fig. 6 is that screwdriver of the present invention completes the structure diagram after accumulation of energy；
Wherein：1st, bottom cover, 2, handle of a knife, 3, inner slide, 4, head cover, 5, cutter hub, 6, spring, 1-1, bottom cover body, 1-2, bearing,
1-3, bracket, 1-4, brake pad, 3-1, one-directional rotation teeth, 3-2, helix groove, 4-1, head cover body, 4-2, rolling bearing, 5-
1st, interior dead axle, 5-2, outer shaft, 5-3, angle pedestal bearing, 5-4, accumulation of energy sphere, 5-5, tension spring, 5-6, slip ring, 5-7, fixation
Ring, 5-8, cutter head.
Specific embodiment
Invention is described in further detail below in conjunction with the accompanying drawings：
The present invention is a kind of screwdriver, which can be converted to the linear motion of screwdriver handle of a knife the rotation of cutter hub,
Being screwed into or back-out so as to fulfill screw.
As shown in Figure 1 and Figure 4, the present invention includes handle of a knife 2, inner slide 3 and cutter hub 5, is hollow wherein inside handle of a knife 2
Cavity, and handle of a knife inner wall is equipped with the helix of protrusion, the helix groove 3- that the setting of inner slide lateral surface matches with helix
2, inner slide center is equipped with the centre bore with cutter hub diameter matches, and a side end face of inner slide is equipped with one-directional rotation teeth 3-1,
Flange is set close to upper end surface on the outer wall of cutter hub, flange sets teeth on upper surface.During assembling, inner slide passes through helix
Slot is rotatably connected with handle of a knife, and inner slide is set in cutter hub top, and company is matched with the teeth on flange by one-directionally rotating teeth
It connects, forms one-way drive mechanism.When pressing handle of a knife, inner slide is rotated up in handle of a knife along helix, inner slide band moving knife
Body rotates, and so as to which the linear motion of handle of a knife to be changed into the rotary motion of cutter hub, realizes being screwed into or back-outing for screw.
In order to facilitate the operation, make the present invention more rigorous from overall structure, convenient for safeguarding and using, the invention also includes
Bottom cover 1, head cover 4 and spring 6, the top cap central is equipped with and the matched centre bore of cutter hub, and head cover is connected through a screw thread
In handle of a knife lower end, cutter hub one end passes through head cover and cutter hub and handle of a knife is linked together by the flange on cutter hub, and bottom cover leads to
It crosses and is threaded in knife upper end portion, spring is between inner slide and bottom cover.Perfect through this structure, the present invention makes
Used time, I＆ M is more convenient, and inner slide is placed in handle of a knife always, and by cutter hub and handle of a knife be connected to become one it is whole
Body, part are not easy to lose.Increase spring between inner slide and bottom cover, one effect is that dynamics is difficult to slap when preventing pressing
It holds, causes rotary speed too fast, another effect is after pressing, during return, without manual operation, utilizes the bullet of spring
Power auto-returned is time saving and energy saving and be conveniently operated.
In order to make structure of the present invention more fit, when operation, is more laborsaving, and can carry out accumulation of energy in pressing, is stopping
The energy of release accumulation, realizes being screwed into or back-outing for screw when only pressing.The present invention does the structure of cutter hub, bottom cover and head cover
It is further to improve.
As shown in Fig. 2, the bottom cover includes：Bottom cover body 1-1, bearing 1-2, bracket 1-3 and brake pad 1-4, the bottom cover
Internal side wall is equipped with connection screw thread, for being attached with handle of a knife；Bracket is connect by bearing with bottom cover body, and brake pad is fixed
In on bracket, the bearing is disk bearing or deep groove ball bearing, when for disk bearing, two disc faces point of disk bearing
It is not linked together with bottom cover body and bracket by spring force, when for deep groove ball bearing, the inner ring of deep groove ball bearing and outer
Circle is fixedly connected respectively with bottom cover body and bracket.
As shown in figure 3, the head cover includes：Head cover body 4-1 and bearing 4-2, the bearing are disk bearing or depth
Ditch ball bearing, when for disk bearing, two disc faces of disk bearing pass through bullet with the flange on cutter hub and head cover body respectively
Spring force links together, when for deep groove ball bearing, the inner ring and outer ring of deep groove ball bearing respectively with head cover body and cutter hub
On flange be fixedly connected.
As shown in figure 5, the cutter hub includes：Interior dead axle 5-1, outer shaft 5-2, angle pedestal bearing 5-3, accumulation of energy sphere 5-4, pulling force
Spring 5-5, slip ring 5-6, retainer ring 5-7 and cutter head 5-8, wherein outer shaft are equipped with centre bore, and interior dead axle passes through angle pedestal bearing
It is fixed in the centre bore of outer shaft, accumulation of energy sphere is fixed on by connecting rod in retainer ring, and retainer ring is fixed on outer shaft, is drawn
Power spring one end is fixed on connecting rod and is fixed on slip ring close to one end of accumulation of energy sphere, the tension spring other end, slip ring
It is set on outer shaft, cutter head is fixed on default shaft end.
Operation principle：
The present invention is completed to store power, pressed in use, cutter head is pressed on screw or screw by pressing handle of a knife
During storing power, inner slide is moved by helix inside handle of a knife to bottom cover direction, and linear motion is converted to rotation by inner slide
Transhipment is dynamic, the accumulation of energy sphere on outer shaft and outer shaft is driven to rotate jointly by the one-directional rotation teeth of inner slide, due to
The supporting role of handle of a knife inner spring, the bracket on bottom cover, brake pad also follow sliding block to rotate together with.In brake pad close to handle of a knife bottom
During lid position, pressing force can be reduced, by the active force of spring by inner slide back to handle of a knife head cover position, at this time due to interior
The one-directional rotation teeth of sliding block are detached from the teeth on flange, do not interfere with the movement of outer shaft.Handle of a knife head cover is reached in sliding block
Behind position, handle of a knife can be pressed again, continue to store power, storage power and so on can be completed.Since rotation momentum is gradually increased, store
Energy ball gradually opens (referring to Fig. 6), and the size opened according to Energy storage ball can weigh the size of rotation momentum.
After completing to store power, continue to press handle of a knife, allow brake pad front end wedge-shaped part be inserted between dead axle and outer shaft,
Interior dead axle and outer shaft locking are integrated, so as to which the movement of outer shaft is passed to interior dead axle, and screw is driven to move, completed
It is screwed into or back-outs process.During being screwed into or back-outing, with the rotation of outer shaft, Energy storage ball and rotary inertia is passed to
Outer shaft completes the release of energy, and accumulation of energy, which is asked, to be started to shrink at, until the energy of Energy storage ball is not enough to driving.
After use, by manually extracting cutter hub from inside to outside from handle of a knife out, make dead axle and outer shaft in brake pad disengaging.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of design spirit of the present invention is not departed from, those of ordinary skill in the art are to the technical side of the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain that the claims in the present invention determine.
Claims (5)
1. a kind of Direct Action Type accumulation of energy screwdriver, which is characterized in that including handle of a knife (2), inner slide (3) and cutter hub (5), the knife
It is hollow cavity inside handle, handle of a knife inner wall is equipped with the helix of protrusion, inner slide (3) lateral surface setting helix groove, interior cunning
Block center is equipped with the centre bore with cutter hub diameter matches, and a side end face of inner slide is equipped with one-directional rotation teeth (3-1), interior cunning
Block (3) is rotatably connected by helix groove with handle of a knife (2), and inner slide is set in cutter hub top, by one-directionally rotating teeth and knife
Teeth matching connection of the external wall on the flange of upper end surface, when pressing handle of a knife, is transported the straight line of handle of a knife by inner slide
Turn becomes the rotary motion of cutter hub.
2. Direct Action Type accumulation of energy screwdriver according to claim 1, which is characterized in that further include bottom cover (1), head cover (4) with
And spring (6), the top cap central is equipped with and the matched centre bore of cutter hub, and head cover is threadedly attached in handle of a knife lower end
Portion, cutter hub one end pass through head cover and cutter hub and handle of a knife are linked together by the flange on cutter hub, and bottom cover is connected through a screw thread
In knife upper end portion, spring is between inner slide and bottom cover.
3. Direct Action Type accumulation of energy screwdriver according to claim 2, which is characterized in that the bottom cover includes：Bottom cover body (1-
1), bearing (1-2), bracket (1-3) and brake pad (1-4), side wall is equipped with connection screw thread in the bottom cover body, and bracket passes through axis
It holds and is connect with bottom cover body, brake pad is fixed on bracket, and the bearing is disk bearing or deep groove ball bearing, when for disc shaft
When holding, two disc faces of disk bearing are linked together respectively with bottom cover body and bracket by spring force, when for deep-groove ball axis
When holding, the inner ring and outer ring of deep groove ball bearing is fixedly connected respectively with bottom cover body and bracket.
4. Direct Action Type accumulation of energy screwdriver according to claim 2, which is characterized in that the head cover includes：Head cover body (4-1)
And rolling bearing (4-2), the rolling bearing is disk bearing or deep groove ball bearing, when for disk bearing, disc shaft
Two disc faces held are linked together respectively with the flange on cutter hub and head cover body by spring force, when for deep groove ball bearing
When, the inner ring and outer ring of deep groove ball bearing is fixedly connected respectively with the flange on head cover body and cutter hub.
5. a kind of Direct Action Type accumulation of energy screwdriver according to claim 2, which is characterized in that the cutter hub includes：Interior dead axle
(5-1), outer shaft (5-2), angle pedestal bearing (5-3), accumulation of energy sphere (5-4), tension spring (5-5), slip ring (5-6), retainer ring
(5-7) and cutter head (5-8), wherein outer shaft (5-2) are equipped with centre bore, and interior dead axle (5-1) is fixed on by angle pedestal bearing (5-3)
In the centre bore of outer shaft (5-2), accumulation of energy sphere is fixed on by connecting rod in retainer ring, and retainer ring is fixed on outer shaft, is drawn
Power spring one end is fixed on connecting rod and is fixed on slip ring close to one end of accumulation of energy sphere, the tension spring other end, slip ring
It is set on outer shaft, cutter head is fixed on default shaft end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337004.9A CN108214381B (en) | 2017-12-14 | 2017-12-14 | Direct Action Type accumulation of energy screwdriver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711337004.9A CN108214381B (en) | 2017-12-14 | 2017-12-14 | Direct Action Type accumulation of energy screwdriver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108214381A true CN108214381A (en) | 2018-06-29 |
| CN108214381B CN108214381B (en) | 2019-06-14 |
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ID=62652106
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711337004.9A Expired - Fee Related CN108214381B (en) | 2017-12-14 | 2017-12-14 | Direct Action Type accumulation of energy screwdriver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108214381B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168613A (en) * | 2020-01-17 | 2020-05-19 | 中国航发贵州航空发动机维修有限责任公司 | Special cutter for disassembling countersunk head screw of aero-engine |
| CN111230788A (en) * | 2020-03-17 | 2020-06-05 | 四川交通职业技术学院 | Screwdriver |
| CN113638428A (en) * | 2021-10-15 | 2021-11-12 | 索泰克(北京)岩土科技有限公司 | Detachable rib prestress supporting structure and manufacturing method thereof |
| CN113638404A (en) * | 2021-10-15 | 2021-11-12 | 索泰克(北京)岩土科技有限公司 | Detachable reinforcement cage and manufacturing method thereof |
| TWI820997B (en) * | 2022-11-02 | 2023-11-01 | 鴻安國際興業有限公司 | Self-rotating tool |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2103406U (en) * | 1991-10-05 | 1992-05-06 | 汪维 | Straight-line operation screwdriver |
| CN101407047A (en) * | 2008-06-03 | 2009-04-15 | 唐朝勤 | Pressure screwdriver |
| CN201295890Y (en) * | 2008-06-06 | 2009-08-26 | 王辉 | Convenient screwdriver |
| CN103231341A (en) * | 2013-05-13 | 2013-08-07 | 湖南大学 | Hand-pressed self-rotation type screwdriver |
| CN203371454U (en) * | 2013-07-26 | 2014-01-01 | 山东电力建设第二工程公司 | Manual-operation energy storage screwdriver |
| CN204450364U (en) * | 2015-01-16 | 2015-07-08 | 应俊超 | A kind of ball screw type screwdriver for tightening mobile phone screw |
| CN105798835A (en) * | 2014-12-31 | 2016-07-27 | 富泰华工业（深圳）有限公司 | Screwdriver |
-
2017
- 2017-12-14 CN CN201711337004.9A patent/CN108214381B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2103406U (en) * | 1991-10-05 | 1992-05-06 | 汪维 | Straight-line operation screwdriver |
| CN101407047A (en) * | 2008-06-03 | 2009-04-15 | 唐朝勤 | Pressure screwdriver |
| CN201295890Y (en) * | 2008-06-06 | 2009-08-26 | 王辉 | Convenient screwdriver |
| CN103231341A (en) * | 2013-05-13 | 2013-08-07 | 湖南大学 | Hand-pressed self-rotation type screwdriver |
| CN203371454U (en) * | 2013-07-26 | 2014-01-01 | 山东电力建设第二工程公司 | Manual-operation energy storage screwdriver |
| CN105798835A (en) * | 2014-12-31 | 2016-07-27 | 富泰华工业（深圳）有限公司 | Screwdriver |
| CN204450364U (en) * | 2015-01-16 | 2015-07-08 | 应俊超 | A kind of ball screw type screwdriver for tightening mobile phone screw |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168613A (en) * | 2020-01-17 | 2020-05-19 | 中国航发贵州航空发动机维修有限责任公司 | Special cutter for disassembling countersunk head screw of aero-engine |
| CN111230788A (en) * | 2020-03-17 | 2020-06-05 | 四川交通职业技术学院 | Screwdriver |
| CN113638428A (en) * | 2021-10-15 | 2021-11-12 | 索泰克(北京)岩土科技有限公司 | Detachable rib prestress supporting structure and manufacturing method thereof |
| CN113638404A (en) * | 2021-10-15 | 2021-11-12 | 索泰克(北京)岩土科技有限公司 | Detachable reinforcement cage and manufacturing method thereof |
| CN113638404B (en) * | 2021-10-15 | 2022-02-08 | 索泰克(北京)岩土科技有限公司 | Detachable reinforcement cage and manufacturing method thereof |
| TWI820997B (en) * | 2022-11-02 | 2023-11-01 | 鴻安國際興業有限公司 | Self-rotating tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108214381B (en) | 2019-06-14 |
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Effective date of registration: 20200903 Address after: Room 401-1, 4th floor, Huakai building, Shenghe Road, Hongfu community, Nancheng street, Dongguan City, Guangdong Province 523000 Patentee after: Guangdong Boshi Intellectual Property Management Consulting Co.,Ltd. Address before: 066004 No. 438, Hebei Avenue, Qinhuangdao, Hebei Patentee before: Yanshan University |
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Effective date of registration: 20201030 Address after: Room 13, Tongguan Shugu, Tongguan District, Tongling City, Anhui Province, 244000 Patentee after: Tongling Koda Productivity Promotion Center Co.,Ltd. Address before: Room 401-1, 4th floor, Huakai building, Shenghe Road, Hongfu community, Nancheng street, Dongguan City, Guangdong Province 523000 Patentee before: Guangdong Boshi Intellectual Property Management Consulting Co.,Ltd. |
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Granted publication date: 20190614 Termination date: 20201214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |