CN2284662Y - Hand drill - Google Patents
Hand drill Download PDFInfo
- Publication number
- CN2284662Y CN2284662Y CN 97217140 CN97217140U CN2284662Y CN 2284662 Y CN2284662 Y CN 2284662Y CN 97217140 CN97217140 CN 97217140 CN 97217140 U CN97217140 U CN 97217140U CN 2284662 Y CN2284662 Y CN 2284662Y
- Authority
- CN
- China
- Prior art keywords
- guide pipe
- drilling rod
- ratchet
- slide block
- hand
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Earth Drilling (AREA)
Abstract
The utility model relates to a hand tool, particularly a hand drill. The aim of the utility model is to solve the problems that the existing hand drill has inflexible operation and no reverse operation. The hand drill comprises a drill rod 3 which is provided with right screw threads 4 and left screw threads 5 and is sheathed with a reset spring 36, a front guide pipe 16 and a back guide pipe 17 which are matched with the drill rod and are slid along an axial direction, a clutch of the front and the back guide pipes, sliding blocks provided with a front guide rail 18 and a back guide rail 19 which are respectively matched with the right screw threads and the left screw threads on each pipe wall, a fixed handle and a driving rod which are respectively connected with the drill rod and the sliding blocks and a release spring 35 of the driving rod. The utility model can make the rectilinear motion of the sliding blocks change into the forward and reverse rotating motion of the drill rod when the two handles are held by hands.
Description
The utility model relates to hand-operated tools, particularly hand drill.
The existing hand drill that constitutes by drilling rod and bevel gear pair that manually is drilled with, have by thereon slidingtype drive rod of drilling rod and suit, be connected carpenter that the two driving rope constitutes etc., structure is more, but be used for coarse processing more, and the operation of can not reversing does not fit into especially at narrow space and carries out operation.
Given this, the purpose of this utility model be to provide a kind of easy and simple to handle, can carry out the hand drill of operation at narrow space, and further provide a kind of can just transfer to the industry, the hand drill of the operation of reversing again.
The utility model adopts driving handle and the fixed handle incompatible driving slide block moving linearly that matches, and the screw thread of employing drilling rod matches with the guide rail of slide block, the rectilinear motion of slide block is transformed into rotatablely moving of drilling rod realizes its purpose; And further adopt the screw thread of drilling rod to be made the left and right sides rotation direction screw thread of double end and guide rail made respectively with about the rotation direction threads engaged of the left and right sides and revolve the purpose that guide rail realizes finishing the rotating operation.
Hand drill of the present utility model (referring to accompanying drawing), comprise drilling rod and supporting in the drilling rod upper edge slide block in axial sliding, it is characterized in that screw thread is arranged on the drilling rod, have in the slide block with drilling rod on the guide rail of threads engaged, the fixed handle that links to each other with drilling rod, the driving handle that links to each other with slide block and back-moving spring are arranged.
Above-mentioned screw thread be the thread groove structure and with respect to the axis symmetry be respectively dextrorotation to left-handed right-hand thread (4) and left-hand thread (5) to structure, preceding guide pipe (16) and back guide pipe (17) that coaxial line is arranged in the above-mentioned slide block, above-mentioned guide rail have respectively on the tube wall of preceding guide pipe and back guide pipe and respectively with right-hand thread and the corresponding fromer rail of left-hand thread (18) and rear rail (19), above-mentioned before guide pipe and after guide pipe clutch is arranged.
Above-mentioned slide block has the sheath (11) of the tubular of holding preceding guide pipe, back guide pipe, clutch and the saturating lid (12) and the slide body (13) of the sheath front and back end that is placed in.
Above-mentioned clutch has respectively at the preceding ratchet (20) of preceding guide pipe and back guide pipe periphery and back ratchet (21), preceding ratchet (22) and back ratchet (23) that the spring chip that can be meshed with preceding ratchet and back ratchet is arranged in the sheath respectively have and preceding ratchet and back the ratchet control strip (26) of the spring chip of crimping and the direction button (25) that links to each other and can slide vertically in the spacing hole (24) of sheath thereof mutually.
Enterprising drilling rod (3) is installed in the shell (1) that is the said fixed handle of having of handgun shape (27) by the spacing axle sleeve (9) of front portion and the axle bed (10) of rear end.Above-mentioned driving handle has the hinge that is arc and mutual crimping at pole on the slide block (28) and the depression bar (29) on shell of being hinged, be hinged with connecting rod (31) between the lower end of fixed handle and pole, return spring (35) is arranged between fixed handle and the pole, and said back-moving spring (36) is sleeved on the drilling rod and between axle bed and slide block.
The front end of above-mentioned drilling rod (1) has the joint (6) of interior hexagon or interior square interface, in the hole of penetrator wall radially retaining steel ball (7) is arranged, and has to be sleeved on the resilient sleeve (8) that drilling rod is outer and match with the retaining steel ball.
In enterprising joint, can be equipped with screw terminals or lengthening joint or square column type joint or interior hexagonal port connections or drill bit or conical head.
Grip the fixed handle and the driving handle of this hand drill during use with proficiency, firmly pinch and press driving handle to promote the slide block moving linearly, because the guide rail of moving linearly and the threads engaged of drilling rod in the slide block, the rectilinear motion of slide block is transformed into rotatablely moving of drilling rod and carry-over moment, can finishes rotary operation behind the equipped operation workpiece.When adopting further structure, the dextrorotation that operated clutch can make above-mentioned drilling rod to left-handed to right-hand thread and left-hand thread match with the preceding guide pipe of above-mentioned slide block and fromer rail and the rear rail in the guide pipe of back respectively, the unidirectional rectilinear motion of slide block can be transformed into two-way the rotatablely moving and carry-over moment forward or backwards of drilling rod.Thereby, can finish the precession operation and revolve behind the equipped operation workpiece and move back operation.
Said structure of the present utility model makes it have following advantage and effect.
One, the helicitic texture of driving handle of the present utility model, fixed handle, slide block guide rail, clutch and drilling rod, rectilinear motion can be transformed into and rotatablely move and carry-over moment, adopt one-handed performance, flexible operation is easy, can carry out operation at narrow space, and can just transfer to industry, the operation of reversing again.
Two, this hand drill compact conformation, little, in light weight, the not power consumption, time saving and energy saving of volume.
Three, the joint design of this hand drill drilling rod can be equipped with the several work workpiece, thereby can finish precession and revolve the several work of moving back, and has the advantage of a tractor serves several purposes.
Hand drill of the present utility model, can be used for multiple creep into and brill moves back operation, particularly suitable is made the medical science orthopedic instrument, can carry out orthopaedic screw, nut, the RF system of the boring of bone surgery, all size that installs or removes, and can connect flexible axle, to the operation that undergos surgery of distant place narrow space.Because volume is little, when adopting non-corrosive material, be convenient to adopt various sterilization methods such as integral high pressure sterilization to disinfect to manually creeping into row.
Below, the utility model is further described to use embodiment and accompanying drawing thereof again.
Brief description of drawings.
Fig. 1 is the structural representation of a kind of hand drill of the present utility model.Show sectional structure.
Fig. 2 is the structural representation of the slide block assembly of Fig. 1.
Fig. 3 is the plan structure schematic diagram of the preceding ratchet of the clutch of Fig. 1, back ratchet, preceding ratchet, back ratchet.
Fig. 4 is the structural representation with the supporting screw terminals of the utility model of Fig. 1.
Fig. 5 is the structural representation with the supporting lengthening formula joint of the utility model of Fig. 1.
Fig. 6 is the structural representation with the supporting square knuckle of the utility model of Fig. 1.
Fig. 7 is the structural representation with the supporting interior hexagonal port connections of the utility model of Fig. 1.
Fig. 8 is the structural representation with the supporting drill bit of the utility model of Fig. 1.
Fig. 9 is the structural representation with the supporting conical head of the utility model of Fig. 1
Embodiment 1
A kind of hand drill of the present utility model, as shown in drawings.Constitute by shell, drilling rod, slide block, driving mechanism etc.
Above-mentioned shell 1, the housing that is handgun shape, by the left and right sides two halves housing that cuts open is formed, burr and groove that the corresponding fastening of energy is arranged respectively on the two halves housing of the left and right sides, during assembling, inner each assembly of packing into earlier, the fastening by burr and groove closes up left and right sides two halves housing and the not changing of the relative positions then, and several the screws 2 with the appropriate location are solidly fixed again.
Above-mentioned drilling rod 3 is straight-bar shape, its bar portion be shaped on respect to the axis symmetry be the thread groove structure and be respectively dextrorotation to left-handed to right-hand thread 4 and left-hand thread 5.The front end of drilling rod 3 is driven the interior hexagon or the interior foursquare joint 6 of the standard of being shaped on, the appropriate location is drilled with a radially aperture of penetrator mouth wall on the joint, retaining steel ball 7 is housed in the aperture, have be sleeved on the drilling rod periphery and with the retaining steel ball resilient sleeve 8 of the open type structure of press fit mutually, thereby, steel ball is fixed on the joint, is used to patch workpiece.When workpiece inserts joint 6 with its modular connection, workpiece joints ejects retaining steel ball 7 along the drilling rod radial direction, make resilient sleeve 8 outer opening, after workpiece inserts and puts in place, the retaining steel ball falls after rise under the screen resilience effect of resilient sleeve, enters the annular groove on the workpiece joints and firmly clamps.There are spacing axle sleeve 9, rear end that axle bed 10 is arranged before the shaft shoulder of drilling rod 3 front ends and between the joint 6, spacing axle sleeve 9 and axle bed 10 are installed on the front and back end of above-mentioned shell 1 upper cavity, thereby drilling rod 3 is installed in the shell 1.Can guarantee drilling rod normally to rotate and twitch before and after not understanding and vacillate now to the left, now to the right.
Above-mentioned slide block, cover fits on the drilling rod, and columnar sheath 11 is arranged, and the front and back end of sheath is fixed with respectively with usual method and covers 12 and slide body 13, thereby forms columniform inner chamber 14.There is the coaxial line cover to fit on the drilling rod 3 in the inner chamber, and with the isolation backing plate 15 of semicircle plate shape separately and be the preceding guide pipe 16 and the back guide pipe 17 of the tubular of self-movement separately.On the tube wall of preceding guide pipe and back guide pipe, have respectively with drilling rod 3 on right-hand thread 4 and the protruding spiral fromer rail 18 and the rear rail 19 of left-hand thread 5 corresponding cooperations.In preceding guide pipe and back guide pipe periphery, the preceding ratchet 20 and the back ratchet 21 of the tubular ratchet structure that is symmetric arrangement arranged respectively.Before ratchet and back ratchet can be respectively be one and makes in preceding guide pipe and back guide pipe periphery, also can make the tubular ratchet respectively after, guide pipe and back guide pipe periphery constitute before being connected in separately again.On the saturating lid 12 and slide body 13 in above-mentioned inner chamber, be fixed with usual method that to be cantilever design and to install end be the preceding ratchet 22 and the back ratchet 23 of the spring chip that can be meshed with preceding ratchet 20 and back ratchet 21 respectively of small end for big end, outstanding end.Open at the barrel of above-mentioned sheath 11 middle part and to be shaped on microscler spacing hole 24, be fitted with the direction button 25 that can slide vertically in the spacing hole, direction button upper end is connected and preceding ratchet and the back ratchet control strip 26 of the spring chip of crimping mutually.The clutch of guide pipe and back guide pipe before ratchet, back ratchet, preceding ratchet, back ratchet, direction button, control strip constitute before above-mentioned.
Above-mentioned driving mechanism has fixed handle 27 that links to each other with drilling rod and the driving handle that links to each other with slide block.Fixed handle is the handle portion of shell 1.Driving handle has and is arc and its upper end and is hinged the pole 28 of slide body 13 bottoms and is hinged at the depression bar 29 of shell 1 appropriate location.The front side edge of depression bar is shaped on the backing plate 30 that matches with human body hand shape.The outer arcuate limit crimping mutually of the arc limit of pole 28 and depression bar 29.Between the lower end of fixed handle 27 and pole 28, be hinged with connecting rod 30.The appropriate location of fixed handle and driving handle bottom is hinged with bearing 32 and bayonet lock 33 respectively, and the outstanding end of bearing 32 and bayonet lock 33 is hinged mutually again.Between the steady pin 34 of this hinge portion and fixed handle, link S-shaped return spring 35.At on the above-mentioned drilling rod 3 and back-moving spring 36 that between axle bed 10 and slide body 13, be set with tapered helical structure.
Said structure constitutes the present embodiment hand drill.Equipped operation auxiliary equipment is finished several work on the joint 6 of the drilling rod front end of this hand drill.The operation auxiliary equipment can be just like the screw terminals shown in Fig. 4～5, lengthening joint, square column type joint, interior hexagonal port connections, drill bit, conical head.
The front end of above-mentioned screw terminals is cylindrical, there are in opposite directions 2 to 3 of symmetry its two ends to be connected in Spring Card 38 on the cylindrical wall on the cylindrical wall with rivet 37, have in cylinder bottom can match with the groove of the head of common screw change cutter head 39, the rear end of screw terminals is common interface formula joint design.
Above-mentioned lengthening joint is connected and composed by front connector 40, extension bar 41, back joint 42.The front end of front connector 40 has the retaining steel ball 44 and the resilient sleeve 45 of the joint design of sheath 43 and similar drilling rod, and its rear end is common interface formula joint design.The front end of back joint 42 is common interface formula joint design, and the rear end is common prism joint design.The two ends of extension bar 41 are the prism joint design that matches with front connector rear end and back joint front end respectively.
The front end of above-mentioned square column type joint is cubic cylindricality connector portions, and the card pearl 46 of common structure is arranged on this connector portions, and its rear end is common interface formula joint design.
The front end of above-mentioned interior hexagonal port connections has the interior hexagonal interface 47 that can match with hexagonal socket nut, and there is square hole shape interface 48 its rear end.
The front end of above-mentioned drill bit is common bit head 49, and the rear end is an interface formula joint design.
The front end of above-mentioned conical head is a truncated cone body 50, and its rear end is an interface formula joint design.
Use this hand drill, with the driving handle that grips fixed handle 27 and form on the other hand by pole 28 and depression bar 29, firmly pinch pressure, promote backing plate 30 and depression bar 29, depression bar is oppressed and promotion pole 28, power is passed to pole, move after pole is stressed, drive is by sheath 11, saturating lid 12, slide body 13 and isolation backing plate 15, preceding guide pipe 16, back guide pipe 17, fromer rail 18, rear rail 19 and preceding ratchet 20, back ratchet 21, preceding ratchet 22, back ratchet 23, direction button 25, the slide blocks that 26 groups of control strips constitute are made shifting movement and compression retracteding position spring 35 and back-moving spring 36 behind the straight line, drive the drilling rod work done that rotates.Unclamp when handling knob and when losing driving force, under the effect of cooperatively interacting of return spring and back-moving spring, slide block, pole, depression bar automatically reset.So repeatable operation realizes working continuously.
When spacing hole 24 center of direction button 25 at sheath, the two ends pin of control strip 26 just in time is pressed on the big end of preceding ratchet 22 and back ratchet 23, the small end of preceding ratchet and back ratchet lifts, preceding ratchet 20 separates with back ratchet 23 with preceding ratchet 22, back ratchet 21, drilling rod can not be obstructed in the front and back twitch, thereby can realize the dismounting of drill rod assemblies.
When direction button 25 was pulled to the front end of spacing hole 24, the front end of the controlled film-making 26 of big end of preceding ratchet 22 was pushed down, and the small end perk, preceding ratchet 20 does not contact with preceding ratchet 22, and preceding guide pipe 16 rotates with drilling rod and does not play the guiding role.Simultaneously, the rear end of the controlled film-making 26 of the small end of back ratchet 23 is depressed with back ratchet 21 and is meshed, back guide pipe 17 can not be rotated, thereby when whole slide block driven-mechanism promotes backward, be engaged in not rotating and the fromer rail 18 that moves backward in the right-hand thread 4 of drilling rod 3, force drilling rod 3 to turn clockwise, the rectilinear motion of slide block is become rotatablely moving of drilling rod and passs moment, realize boring, operations such as mounting screw, nut.
Otherwise when the direction button was pulled to the rear end of spacing hole, back guide pipe 17 was in the servo-actuated state, the rectilinear motion of slide block is become rotatablely moving the also carry-over moment of drilling rod by preceding guide pipe 16, drilling rod 3 is rotated counterclockwise, realizes moving back brill, unload operations such as screw, nut.
Claims (5)
1, a kind of hand drill, comprise drilling rod and supporting in the drilling rod upper edge slide block in axial sliding, it is characterized in that screw thread is arranged on the drilling rod, have in the slide block with drilling rod on the guide rail of threads engaged, the fixed handle that links to each other with drilling rod, the driving handle that links to each other with slide block and back-moving spring are arranged.
2, hand drill according to claim 1, it is characterized in that said screw thread be the thread groove structure and with respect to the axis symmetry be respectively dextrorotation to left-handed right-hand thread (4) and left-hand thread (5) to structure, preceding guide pipe (16) and back guide pipe (17) that coaxial line is arranged in the said slide block, said guide rail have respectively on the tube wall of preceding guide pipe and back guide pipe and respectively with right-hand thread and the corresponding fromer rail of left-hand thread (18) and rear rail (19), above-mentioned before guide pipe and after guide pipe clutch is arranged.
3, hand drill according to claim 2, it is characterized in that said slide block has holds preceding guide pipe, back guide pipe, the saturating lid (12) of the sheath of the tubular of clutch (11) and the sheath front and back end that is placed in and slide body (13), said clutch has respectively at the preceding ratchet (20) of preceding guide pipe and back guide pipe periphery and back ratchet (21), preceding ratchet (22) and back ratchet (23) that the spring chip that can be meshed with preceding ratchet and back ratchet is arranged in the sheath respectively have and preceding ratchet and back the ratchet control strip (26) of the spring chip of crimping and the direction button (25) that links to each other and can slide vertically in the spacing hole (24) of sheath thereof mutually.
4, according to claim 1,2 or 3 described hand drills, it is characterized in that said drilling rod (3) is installed in the shell (1) that is the said fixed handle of having of handgun shape (27) by the spacing axle sleeve (9) of front portion and the axle bed (10) of rear end, said driving handle has the hinge that is arc and mutual crimping at pole on the slide block (28) and the depression bar (29) on shell of being hinged, be hinged with connecting rod (31) between the lower end of fixed handle and pole, return spring (35) is arranged between fixed handle and the pole, and said back-moving spring (36) is sleeved on the drilling rod and between axle bed and slide block.
5, hand drill according to claim 4, the front end that it is characterized in that said drilling rod (1) has the joint (6) of interior hexagon or interior square interface, in the hole of penetrator wall radially, retaining steel ball (7) is arranged, have to be sleeved on the resilient sleeve (8) that drilling rod is outer and match with the retaining steel ball, in joint, be fitted with screw terminals or lengthening joint or square column type joint or interior hexagonal port connections or drill bit or conical head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97217140 CN2284662Y (en) | 1997-05-31 | 1997-05-31 | Hand drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97217140 CN2284662Y (en) | 1997-05-31 | 1997-05-31 | Hand drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2284662Y true CN2284662Y (en) | 1998-06-24 |
Family
ID=33933816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97217140 Expired - Fee Related CN2284662Y (en) | 1997-05-31 | 1997-05-31 | Hand drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2284662Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290447A (en) * | 2015-11-30 | 2016-02-03 | 重庆锐佳机械有限公司 | Drilling machine |
| CN106180811A (en) * | 2016-09-20 | 2016-12-07 | 安徽机电职业技术学院 | A kind of multifunctional manual drilling equipment |
| CN108113731A (en) * | 2017-12-29 | 2018-06-05 | 丁春林 | A kind of orthopaedics nail combined countersink drill |
| CN108447353A (en) * | 2018-03-06 | 2018-08-24 | 魏敏 | A kind of tumbler of Physical Experiment |
| CN115363687A (en) * | 2022-09-05 | 2022-11-22 | 诺鑫（南通）医疗技术有限公司 | Bone drill device with depth measuring function |
-
1997
- 1997-05-31 CN CN 97217140 patent/CN2284662Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105290447A (en) * | 2015-11-30 | 2016-02-03 | 重庆锐佳机械有限公司 | Drilling machine |
| CN106180811A (en) * | 2016-09-20 | 2016-12-07 | 安徽机电职业技术学院 | A kind of multifunctional manual drilling equipment |
| CN108113731A (en) * | 2017-12-29 | 2018-06-05 | 丁春林 | A kind of orthopaedics nail combined countersink drill |
| CN108113731B (en) * | 2017-12-29 | 2020-07-31 | 鹤壁市人民医院 | Bone nail countersink drill for orthopedics |
| CN108447353A (en) * | 2018-03-06 | 2018-08-24 | 魏敏 | A kind of tumbler of Physical Experiment |
| CN108447353B (en) * | 2018-03-06 | 2019-12-24 | 温州海蓝工业设计有限公司 | Rotating device for physical experiment |
| CN115363687A (en) * | 2022-09-05 | 2022-11-22 | 诺鑫（南通）医疗技术有限公司 | Bone drill device with depth measuring function |
| CN115363687B (en) * | 2022-09-05 | 2024-01-09 | 诺鑫（南通）医疗技术有限公司 | Bone drill device with depth measurement function |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7156187B1 (en) | Electric hand screwdriver with adjustable head | |
| US5470180A (en) | Reversible drill/driver tool | |
| CA2176325C (en) | Reversible drill/driver tool | |
| US7779931B2 (en) | Electric hand screwdriver with adjustable head | |
| US4653356A (en) | Multi-purpose hand tool | |
| US7814816B2 (en) | Power tool, battery, charger and method of operating the same | |
| US5954463A (en) | Reversible drill driver tool | |
| CN104108086B (en) | Screw clamping device and screw instrument | |
| CN1470366A (en) | Motor-driven tool having locking mechanism | |
| EP1955820A1 (en) | Multi-bit drive with drywall dimpler | |
| CN2284662Y (en) | Hand drill | |
| CN2750899Y (en) | Output adapter of hand-held electric tool | |
| CN215748101U (en) | But numerical control carving of quick replacement anchor clamps mills machine | |
| CN203711913U (en) | Mini-type precision electric tool | |
| CN214049057U (en) | A hold mechanical ware for installing at operation robot arm or arm end | |
| CN221383847U (en) | Tooth implant fixing wrench | |
| US20120103146A1 (en) | High torque screwdriver | |
| CN220320087U (en) | Ball pair mechanism | |
| CN220234400U (en) | Driving device | |
| CN220325437U (en) | Transmission device | |
| CN220713954U (en) | Manual operation device for endoscopic surgical instrument | |
| CN221791301U (en) | Screw tap clamping end fixing mechanism | |
| CN221229400U (en) | Multifunctional fast-assembling ratchet torsion handle | |
| CN220548198U (en) | Push type manual screwdriver structure | |
| CN2530784Y (en) | Multifunction gun type combined tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE ADDRESS; FROM: 641400 HUAXI GENERAL MACHINE CO., LTD., JIANYANG CITY, SICHUAN TO:BUJIRENMINYI YARD, SHENZHEN CITY, GUANGDONG PROVINCE, 518112 |
|
| CP03 | Change of name, title or address |
Address after: Two Buji 518112 people's Hospital of Guangdong, Shenzhen Patentee after: Xie Zengyu Patentee after: Zhang Xinhua Patentee after: Xie Fei Address before: 641400 Huaxi General Machine Co, Sichuan, Jianyang Patentee before: Xie Zengyu Patentee before: Zhang Xinhua Patentee before: Xie Fei |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |