CN208785004U - A kind of wrist artifucial limb based on line and steering engine linkage - Google Patents
A kind of wrist artifucial limb based on line and steering engine linkage Download PDFInfo
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- CN208785004U CN208785004U CN201820722616.3U CN201820722616U CN208785004U CN 208785004 U CN208785004 U CN 208785004U CN 201820722616 U CN201820722616 U CN 201820722616U CN 208785004 U CN208785004 U CN 208785004U
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- artifucial limb
- wrist
- artifucial
- steering engine
- finger
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Abstract
The utility model belongs to artifucial limb technical field, in particular to a kind of wrist artifucial limb based on line and steering engine linkage, including wrist artifucial limb, the wrist artifucial limb is connected with hand artifucial limb, and the hand artifucial limb includes palm artifucial limb and multiple finger artifucial limbs, and the finger artifucial limb includes multiple finger joints；Steering engine, the steering engine is mounted in the wrist artifucial limb, and is connected with single-chip microcontroller, and a plurality of draught line is equipped on the steering engine, and a plurality of draught line and multiple finger artifucial limbs correspond；Touching switch module, the touching switch module are mounted in the wrist artifucial limb, and one end is connected with the single-chip microcontroller, and the other end is connected by battery with the steering engine.The utility model drives draught line folding and unfolding by steering engine, to realize bending and the return of finger artifucial limb, structure is simple, is convenient for later maintenance, and components are easy to purchase and prepare, and manufacturing cost is low, has the characteristics that easy to use, processing cost is low.
Description
Technical field
The utility model belongs to artifucial limb technical field, is joined specifically, the utility model relates to one kind based on line and steering engine
Dynamic wrist artifucial limb.
Background technique
Artifucial limb is the means and method using engineering technology, is specially designed to make up amputee or limbs Partial defect person
With the artificial prosthesis of production assembly.The main function of artifucial limb is the partial function instead of losing limbs, and amputee is made to restore certain
Self care ability and ability to work.
The company of artifucial limb is mainly sold all by the sales situation of the case where based on China physical disabilities at this stage and artifucial limb, several families
To sell based on electronics artifucial limb, electronics artifucial limb is at high cost, expensive, and most physical disabilities are difficult to pay the great number of purchase artifucial limb
Expense.Meanwhile purely mechanic artifucial limb on the market is inconvenient to use, it is difficult to effectively meet the people of the part arm bone incompleteness of auxiliary forearm
The demand that group simply grasps.
According to the above analysis it is found that the artifucial limb of the prior art has the disadvantage that
1, the purely mechanic artifucial limb of the prior art is inconvenient to use, it is difficult to effectively meet the part arm bone incompleteness of auxiliary forearm
The demand that crowd simply grasps；
2, the electronics artifucial limb of the prior art is at high cost, expensive, and most physical disabilities are difficult to pay the height of purchase artifucial limb
Volume expense.
Utility model content
The utility model provides a kind of wrist artifucial limb based on line and steering engine linkage, can not only solve in the prior art
Artifucial limb technical problem inconvenient for use, additionally it is possible to solve artifucial limb technical problem at high cost in the prior art.
To solve the above-mentioned problems, the utility model provides a kind of wrist artifucial limb based on line and steering engine linkage, skill
Art scheme is as follows:
A kind of wrist artifucial limb based on line and steering engine linkage comprising: wrist artifucial limb, the wrist artifucial limb and hand artifucial limb
It is connected, the hand artifucial limb includes palm artifucial limb and multiple finger artifucial limbs, and the palm artifucial limb is mounted on the wrist artifucial limb,
The finger artifucial limb is flexibly connected with the palm artifucial limb, and the finger artifucial limb includes multiple finger joints, each finger artifucial limb
The adjacent finger joint be flexibly connected；Steering engine, the steering engine is mounted in the wrist artifucial limb, and is connected with single-chip microcontroller, in institute
Steering engine is stated equipped with a plurality of draught line, a plurality of draught line and multiple finger artifucial limbs correspond, make every described in lead
Lead is interspersed in whole finger joints of corresponding each finger artifucial limb, and with the end of corresponding each finger artifucial limb
It is connected；Touching switch module, the touching switch module are mounted in the wrist artifucial limb, and one end is connected with the single-chip microcontroller,
The other end is connected by battery with the steering engine.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: the palm artifucial limb, the finger
Artifucial limb is equipped with traction line passage, for providing interspersed space for the draught line.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: multiple fingers of the finger artifucial limb
Section includes distal end finger joint, middle-end finger joint and left knee；The distal end finger joint is connected with the middle-end finger joint by Screw,
The middle-end finger joint is connected with the left knee by Screw.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: it further include a plurality of elastica, it is a plurality of
The elastica and multiple finger artifucial limbs correspond, and the elastica successively interts the distal end finger joint, the middle-end
Finger joint and the left knee, one end are fixed in the distal end finger joint, and the other end is fixed on the palm artifucial limb.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: the distal end finger joint is equipped with peace
Hole is filled, the mounting hole is used to provide installation site for the draught line.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: the wrist artifucial limb includes proximal end
Wrist artifucial limb and distal end wrist artifucial limb, the proximal end wrist artifucial limb are connected with the hand artifucial limb, the distal end wrist artifucial limb set
Mounted in the outside of the proximal end wrist artifucial limb.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: set on the distal end wrist artifucial limb
There is bayonet lock, the proximal end wrist artifucial limb is equipped with guide rail, and the bayonet lock matches with the guide rail.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: the steering engine is equipped with multiple receipts
Drum, multiple take-up reels and multiple finger artifucial limbs correspond, for providing accommodated position for the draught line.
Such as above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: it further include large arm fixed frame, it is described
Large arm fixed frame is flexibly connected with the wrist artifucial limb.
Such as the above-mentioned wrist artifucial limb based on line and steering engine linkage, further preferably are as follows: the touching switch module includes
Upper touching switch and lower touching switch.
Analysis it is found that compared with prior art, advantages and beneficial effects of the utility model lie in that
1, the wrist artifucial limb provided by the utility model based on line and steering engine linkage is suitable for forearm in the presence of part incompleteness
Disabled person.Draught line folding and unfolding is driven by steering engine, to realize bending and the return of finger artifucial limb, uses finger convenient for user
Artifucial limb realizes grasp motion, and structure is simple, is convenient for later maintenance, and components are easy to purchase and prepare, and manufacturing cost is low, has just
In the feature used, processing cost is low.
2, the distal end finger joint of the wrist artifucial limb provided by the utility model based on line and steering engine linkage is equipped with mounting hole, just
In the installation of draught line；Distal end wrist artifucial limb and proximal end wrist artifucial limb are convenient for dismantling, large arm fixed frame using socket cooperation
Wrist artifucial limb is cooperated to use, firm and reliable connection, to make the utility model that there is easy to disassemble, firm and reliable connection spy
Point.
3, the wrist artifucial limb provided by the utility model based on line and steering engine linkage is equipped with traction line passage, is convenient for draught line
Folding and unfolding；Multiple finger joints are connected by Screw, are bent convenient for finger artifucial limb；Elastica is interspersed in multiple finger joints, is convenient for
Finger artifucial limb return, so that the utility model has the characteristics that be easy to use.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the wrist artifucial limb provided by the utility model based on line and steering engine linkage.
Fig. 2 is the hand artifucial limb structural schematic diagram of the utility model.
Fig. 3 is the proximal end wrist artifucial limb structural schematic diagram of the utility model.
Fig. 4 is the distal end wrist artifucial limb structural schematic diagram of the utility model.
Fig. 5 is the schematic internal view of the distal end finger joint of the utility model.
In figure: 1- finger artifucial limb；2- palm artifucial limb；The proximal end 3- wrist artifucial limb；The distal end 4- wrist artifucial limb；5- large arm is fixed
Frame；The distal end 6- finger joint；7- middle-end finger joint；8- left knee；9- guide rail；10- bayonet lock；11- mounting hole；12- draws line passage.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, the utility model provides a kind of wrist artifucial limb based on line and steering engine linkage comprising: wrist
Artifucial limb, wrist artifucial limb are connected with hand artifucial limb, and hand artifucial limb includes palm artifucial limb 2 and multiple finger artifucial limbs 1, and palm artifucial limb 2 is pacified
On wrist artifucial limb, finger artifucial limb 1 is flexibly connected with palm artifucial limb 2, and finger artifucial limb 1 includes multiple finger joints, each finger justice
The adjacent finger joint of limb 1 is flexibly connected；Steering engine, steering engine are mounted in wrist artifucial limb, and are connected with single-chip microcontroller, are equipped on steering engine more
Draught line, a plurality of draught line and multiple finger artifucial limbs 1 correspond；Every draught line is set to be interspersed in corresponding each finger justice
In whole finger joints of limb 1, and it is connected with the end of corresponding each finger artifucial limb 1；Touching switch module, touching switch module peace
In wrist artifucial limb, one end is connected with single-chip microcontroller, and the other end is connected by battery with steering engine.
Specifically, the wrist artifucial limb provided by the utility model based on line and steering engine linkage is suitable for forearm, there are parts
The disability user that incomplete disabled person, i.e. radius and ulna respectively have part incompleteness.Wrist artifucial limb is fixed on by velcro
On the forearm of user's remaining；Wrist artifucial limb is cavity structure, and steering engine is mounted in wrist artifucial limb, and passes through draught line and finger
Artifucial limb 1 is connected.When user executes grasp motion, user contacts touching switch module, and steering engine rotates at this time, drives traction
Line tightening, multiple finger joints of finger artifucial limb 1 relatively rotate under the traction of the traction wire, so that finger artifucial limb 1 is completed
Grasp motion.When user withdraws grasp motion, it is contacted again touching switch module, steering engine reversely rotates at this time, by tightening
Draught line is released, to gradually withdraw grasp motion.The single-chip microcontroller of the utility model is used to control rotating and reverse for steering engine, this
Kind control mode is usual manner；Single-chip microcontroller uses this field routine techniques, and single-chip microcontroller is this field to the control mode of steering engine
Conventional control mode.Wrist artifucial limb provided by the utility model based on line and steering engine linkage drives draught line to receive by steering engine
It puts, to realize bending and the return of finger artifucial limb 1, realizes grasp motion, structure letter using finger artifucial limb 1 convenient for user
It is single, it is convenient for later maintenance, components are easy to purchase and prepare, and manufacturing cost is low, with the spy being easy to use, processing cost is low
Point.
In order to make the utility model convenient for transmission, as shown in Figure 1 and Figure 5, the palm artifucial limb 2 of the utility model, finger justice
Limb 1 is equipped with traction line passage 12, for providing interspersed space for draught line.The palm artifucial limb 2, finger artifucial limb 1 of the utility model
It is interior to be equipped with traction line passage 12, interspersed space can be provided for draught line, convenient for the folding and unfolding of draught line, so that steering engine can be rapid
Finger artifucial limb 1 is driven to act, it is accurate convenient to be driven, so that the utility model has the characteristics that convenient for transmission.
In order to keep the utility model operation smooth, as depicted in figs. 1 and 2, multiple fingers of the finger artifucial limb 1 of the utility model
Section includes distal end finger joint 6, middle-end finger joint 7 and left knee 8；Distal end finger joint 6 is connected with middle-end finger joint 7 by Screw, in
End finger joint 7 is connected with left knee 8 by Screw.The utility model by Screw be sequentially connected distal end finger joint 6, in
Finger joint 7, left knee 8 are held, is relatively rotated convenient for adjacent finger joint, finger artifucial limb 1 can be smoothly bent, to make
Obtaining the utility model has the characteristics that operation is smooth.
In order to make the utility model convenient for return, as depicted in figs. 1 and 2, the utility model further includes a plurality of elastica, more
Elastica and multiple finger artifucial limbs 1 correspond, and elastica successively interts distal end finger joint 6, middle-end finger joint 7 and left knee 8,
One end is fixed in distal end finger joint 6, and the other end is fixed on palm artifucial limb 2.The distal end finger joint 6, middle-end finger joint 7 of the utility model
It is interspersed with elastica in left knee 8, elastica occurs elastic deformation and extends, finger artifucial limb 1 when finger artifucial limb 1 is bent
Elastica can shorten rapidly under a stretching force when return, consequently facilitating 1 return of finger artifucial limb, so that the utility model has
The characteristics of convenient for return.
In order to make the utility model convenient for assembling, as shown in Figure 2 and Figure 5, the distal end finger joint 6 of the utility model is equipped with peace
Hole 11 is filled, mounting hole 11 is used to provide installation site for draught line.The distal end finger joint 6 of the utility model is equipped with mounting hole 11,
Draught line, which can be tied, to be tied up on mounting hole 11, convenient for the installation of draught line, so that the utility model has convenient for assembling
Feature.
In order to keep the utility model easy to disassemble, as shown in Figure 3 and Figure 4, the wrist artifucial limb of the utility model includes proximal end
Wrist artifucial limb 3 and distal end wrist artifucial limb 4, proximal end wrist artifucial limb 3 are connected with hand artifucial limb, and distal end wrist artifucial limb 4 is sleeved on proximal end
The outside of wrist artifucial limb 3.The distal end wrist artifucial limb 4 of the utility model phase by the way of socket cooperation with proximal end wrist artifucial limb 3
Even, convenient for maintenance when the utility model is dismantled so that the utility model have the characteristics that it is easy to disassemble.
In order to further expand the function of the utility model, as shown in Figure 3 and Figure 4, the distal end wrist justice of the utility model
Limb 4 is equipped with bayonet lock 10, and proximal end wrist artifucial limb 3 is equipped with guide rail 9, and bayonet lock 10 matches with the guide rail 9.The utility model
Bayonet lock 10 can slide on the rail 9, and so as to make proximal end wrist artifucial limb 3, distally wrist artifucial limb 4 is rotated, so that this is practical
It is novel to execute grasp motion in different directions, the function of the utility model is further expanded, so that this is practical
It is novel have the characteristics that it is vdiverse in function.
For the ease of controlling each finger artifucial limb 1, as shown in Figure 1, the steering engine of the utility model is equipped with multiple
Take-up reel, multiple take-up reels and multiple finger artifucial limbs 1 correspond, for providing accommodated position for draught line.Multiple take-up reels
Diameter it is different, the length of retractable cable is different under the drive of the same steering engine, makes with a distance from steering engine not so as to suitable
With 1 bending amplitude of finger artifucial limb it is identical, convenient for control finger artifucial limb 1 movement so that the utility model have be convenient for
The characteristics of control.
In order to make the utility model firm and reliable connection, as shown in Figure 1, the utility model further includes large arm fixed frame 5, greatly
Arm fixed frame 5 is flexibly connected with wrist artifucial limb.Large arm fixed frame 5 is connected by velcro with the large arm of user, and wrist is cooperated
Artifucial limb use, firm and reliable connection so that the utility model have the characteristics that it is solid and reliable.
In order to make the utility model convenient for operation, as shown in Figure 1, the touching switch module of the utility model includes upper touching
Switch and lower touching switch.Upper touching switch, lower touching switch are connected with single-chip microcontroller respectively, and user touches lower touching switch
When, circuit is switched on, and single-chip microcontroller controls steering engine and tightens draught line, hereafter, in user's touching when touching switch, single-chip microcontroller control
Steering engine releases draught line, and circuit disconnects therewith.When user individually touches touching switch, steering engine is not acted.Single-chip microcontroller
Connection with upper touching switch, lower touching switch is this field routine techniques.The upper distally mounted wrist artifucial limb 4 of touching switch
On the upper wall of cavity, on the lower wall of the cavity of the lower distally mounted wrist artifucial limb 4 of touching switch, consequently facilitating user touches,
So that the utility model has the characteristics that convenient for operation.
As shown in Figures 1 to 5, it elaborates below to the course of work of the utility model:
The large arm fixed frame 5 of the wrist artifucial limb provided by the utility model to be linked based on line with steering engine is passed through velcro and made
The large arm of user is connected, and distal end wrist artifucial limb 4 is connected by velcro with the forearm of user's remaining, and proximal end wrist artifucial limb 3 is pacified
It on distal end wrist artifucial limb 4, can be rotated around distal end wrist artifucial limb 4, steering engine is mounted on proximal prosthesis, upper touching switch peace
On the upper wall of the cavity of distal end wrist artifucial limb 4, on the lower wall of the cavity of the lower distally mounted wrist artifucial limb 4 of touching switch,
Steering engine is equipped with five draught lines, and five draught lines are connected with five finger artifucial limbs 1 respectively.Draught line is drawn by the take-up reel of steering engine
Palm artifucial limb 2, left knee 8, middle-end finger joint 7 and distal end finger joint 6 are successively interted by traction line passage 12 after out, and are fixed on
On the mounting hole 11 of distal end finger joint 6.When user executes grasp motion, user contacts lower touching switch, and steering engine turns at this time
It is dynamic, draught line tightening is driven, multiple finger joints of finger artifucial limb 1 relatively rotate under the traction of the traction wire, so that hand
Refer to that artifucial limb 1 completes grasp motion, elastica occurs elastic deformation and extends at this time.When user withdraws grasp motion, in touching
Touching switch, steering engine reversely rotates at this time, and the draught line of tightening is released, elastica rebound, to withdraw grasp motion.Steering engine
Rotation controlled by single-chip microcontroller, single-chip microcontroller uses this field routine techniques, and single-chip microcontroller is this to the control mode of steering engine
Field conventional control mode.
Analysis it is found that compared with prior art, advantages and beneficial effects of the utility model lie in that
1, the wrist artifucial limb provided by the utility model based on line and steering engine linkage is suitable for forearm in the presence of part incompleteness
Disabled person.Draught line folding and unfolding is driven by steering engine, to realize bending and the return of finger artifucial limb, uses finger convenient for user
Artifucial limb realizes grasp motion, and structure is simple, is convenient for later maintenance, and components are easy to purchase and prepare, and manufacturing cost is low, has just
In the feature used, processing cost is low.
2, the distal end finger joint of the wrist artifucial limb provided by the utility model based on line and steering engine linkage is equipped with mounting hole, just
In the installation of draught line；Distal end wrist artifucial limb and proximal end wrist artifucial limb are convenient for dismantling, large arm fixed frame using socket cooperation
Wrist artifucial limb is cooperated to use, firm and reliable connection, to make the utility model that there is easy to disassemble, firm and reliable connection spy
Point.
3, the wrist artifucial limb provided by the utility model based on line and steering engine linkage is equipped with traction line passage, is convenient for draught line
Folding and unfolding；Multiple finger joints are connected by Screw, are bent convenient for finger artifucial limb；Elastica is interspersed in multiple finger joints, is convenient for
Finger artifucial limb return, so that the utility model has the characteristics that be easy to use.
As known by the technical knowledge, the utility model can pass through other essence without departing from its spirit or the reality of essential feature
Scheme is applied to realize.Therefore, embodiment disclosed above, in all respects are merely illustrative, and are not only
's.All changes that come within the scope of the invention or equivalents of the invention are by the utility model packet
Contain.
Claims (10)
1. a kind of wrist artifucial limb based on line and steering engine linkage characterized by comprising
Wrist artifucial limb, the wrist artifucial limb are connected with hand artifucial limb, and the hand artifucial limb includes palm artifucial limb and multiple fingers justice
Limb, the palm artifucial limb are mounted on the wrist artifucial limb, and the finger artifucial limb is flexibly connected with the palm artifucial limb, the hand
Refer to that artifucial limb includes multiple finger joints, the adjacent finger joint of each finger artifucial limb is flexibly connected；
Steering engine, the steering engine is mounted in the wrist artifucial limb, and is connected with single-chip microcontroller, and a plurality of traction is equipped on the steering engine
Line, a plurality of draught line and multiple finger artifucial limbs correspond, and are interspersed in every draught line corresponding each
In whole finger joints of the finger artifucial limb, and it is connected with the end of corresponding each finger artifucial limb；
Touching switch module, the touching switch module are mounted in the wrist artifucial limb, and one end is connected with the single-chip microcontroller, separately
One end is connected by battery with the steering engine.
2. the wrist artifucial limb according to claim 1 based on line and steering engine linkage, it is characterised in that:
The palm artifucial limb, the finger artifucial limb are equipped with traction line passage, for providing interspersed space for the draught line.
3. the wrist artifucial limb according to claim 1 or 2 based on line and steering engine linkage, it is characterised in that:
Multiple finger joints of the finger artifucial limb include distal end finger joint, middle-end finger joint and left knee；The distal end finger joint with it is described
Middle-end finger joint is connected by Screw, and the middle-end finger joint is connected with the left knee by Screw.
4. the wrist artifucial limb according to claim 3 based on line and steering engine linkage, which is characterized in that further include:
A plurality of elastica, a plurality of elastica and multiple finger artifucial limbs correspond, and the elastica successively interts institute
Distal end finger joint, the middle-end finger joint and the left knee are stated, one end is fixed in the distal end finger joint, and the other end is fixed on institute
It states on palm artifucial limb.
5. the wrist artifucial limb according to claim 3 based on line and steering engine linkage, it is characterised in that:
The distal end finger joint is equipped with mounting hole, and the mounting hole is used to provide installation site for the draught line.
6. the wrist artifucial limb according to claim 1 or 2 based on line and steering engine linkage, it is characterised in that:
The wrist artifucial limb includes proximal end wrist artifucial limb and distal end wrist artifucial limb, the proximal end wrist artifucial limb and the hand artifucial limb
It is connected, the distal end wrist artifucial limb is sleeved on the outside of the proximal end wrist artifucial limb.
7. the wrist artifucial limb according to claim 6 based on line and steering engine linkage, it is characterised in that:
The distal end wrist artifucial limb is equipped with bayonet lock, and the proximal end wrist artifucial limb is equipped with guide rail, the bayonet lock and the guide rail
Match.
8. the wrist artifucial limb according to claim 1 or 2 based on line and steering engine linkage, it is characterised in that:
The steering engine is equipped with multiple take-up reels, and multiple take-up reels and multiple finger artifucial limbs correspond, for for
The draught line provides accommodated position.
9. the wrist artifucial limb according to claim 1 based on line and steering engine linkage, which is characterized in that further include:
Large arm fixed frame, the large arm fixed frame are flexibly connected with the wrist artifucial limb.
10. the wrist artifucial limb according to claim 1 or 2 based on line and steering engine linkage, it is characterised in that:
The touching switch module includes upper touching switch and lower touching switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820722616.3U CN208785004U (en) | 2018-05-15 | 2018-05-15 | A kind of wrist artifucial limb based on line and steering engine linkage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820722616.3U CN208785004U (en) | 2018-05-15 | 2018-05-15 | A kind of wrist artifucial limb based on line and steering engine linkage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208785004U true CN208785004U (en) | 2019-04-26 |
Family
ID=66200022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820722616.3U Expired - Fee Related CN208785004U (en) | 2018-05-15 | 2018-05-15 | A kind of wrist artifucial limb based on line and steering engine linkage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208785004U (en) |
-
2018
- 2018-05-15 CN CN201820722616.3U patent/CN208785004U/en not_active Expired - Fee Related
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190426 Termination date: 20200515 |
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| CF01 | Termination of patent right due to non-payment of annual fee |