CN112401968A - Ratchet wheel bone drill key - Google Patents
Ratchet wheel bone drill key Download PDFInfo
- Publication number
- CN112401968A CN112401968A CN202011300074.9A CN202011300074A CN112401968A CN 112401968 A CN112401968 A CN 112401968A CN 202011300074 A CN202011300074 A CN 202011300074A CN 112401968 A CN112401968 A CN 112401968A
- Authority
- CN
- China
- Prior art keywords
- outer sleeve
- stop block
- pawl
- spring
- pawl mechanism
- 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.)
- Pending
Links
- 210000000988 bone and bone Anatomy 0.000 title claims abstract description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 33
- 239000010959 steel Substances 0.000 claims description 33
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000000399 orthopedic effect Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods
- A61B17/16—Instruments for performing osteoclasis; Drills or chisels for bones; Trepans
- A61B17/1613—Component parts
Landscapes
- Health & Medical Sciences (AREA)
- Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Heart & Thoracic Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention belongs to the field of orthopedic tools, and relates to a ratchet wheel bone drill key which comprises an outer sleeve, a loop bar and an outer sleeve cap, wherein one end of the outer sleeve is provided with a mounting hole, one end of the loop bar is inserted into the mounting hole, the periphery of the loop bar, close to the opening end of the mounting hole, in the mounting hole is provided with ratchet wheel teeth, the outer sleeve walls on two sides of the ratchet wheel teeth are provided with stop block mounting grooves, and one ends of a left pawl mechanism and a right pawl mechanism are respectively inserted into the stop block mounting; the outer sleeve cap is sleeved on the periphery of the sleeve rod and connected with the outer sleeve, two stop block limiting grooves are arranged on one side, close to the outer sleeve, of the outer sleeve cap, the two stop block limiting grooves are long circular arc grooves, and the width of one end of each long circular arc groove gradually decreases from the other end of each long circular arc groove; the other ends of the left pawl mechanism and the right pawl mechanism are respectively and correspondingly inserted into the two limit grooves of the stop blocks. The invention is not easy to be twisted and reversed and confused in the working process, thereby ensuring the safe operation of the operation; the handle is easy to hold, the phenomenon of slipping and falling is not easy to occur in the rotating process, and labor is saved in the using process.
Description
Technical Field
The invention relates to a ratchet wheel bone drill key, and belongs to the field of orthopedic tools.
Background
In the bone surgery, can use the key to carry out the locking of drill chuck when using the bone to bore, current bone drill key adopts T type structural design usually, can corotation or reversal simultaneously, easily takes place to twist among the operation process and revolves the mistake that reverses the confusion and lead to the operation time extension and influence the operation effect even to there is feeling not good enough in the use, the phenomenon such as drop easily appears skidding in the rotatory locking process, and comparatively difficultly in the use.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the ratchet wheel bone drill key is not easy to be twisted and reversely confused in the working process, and the safe operation is ensured; the handle is easy to hold, the phenomenon of slipping and falling is not easy to occur in the rotating process, and labor is saved in the using process.
The invention relates to a ratchet wheel bone drill key, which comprises an outer sleeve, a loop bar and an outer sleeve cap, wherein one end of the outer sleeve is provided with a mounting hole, one end of the loop bar is inserted into the mounting hole, a bearing is arranged between the inner wall of the mounting hole and the loop bar, ratchet wheel teeth are arranged on the periphery of the loop bar close to the opening end of the mounting hole in the mounting hole, the outer sleeve walls on two sides of the ratchet wheel teeth are provided with stop block mounting grooves, and one ends of a left pawl mechanism and a right pawl mechanism are respectively inserted into the stop; the outer sleeve cap is sleeved on the periphery of the loop bar and connected with the outer sleeve, two stop block limiting grooves are arranged on one side, close to the outer sleeve, of the outer sleeve cap, the two stop block limiting grooves are long circular arc grooves, the width of one end of each long circular arc groove gradually decreases from the other end of each long circular arc groove, the distance from the inner wall of each long circular arc groove at the wider end to the central line is smaller than the radius of the loop bar at the position with the ratchet teeth, and the distance from the inner wall of each long circular arc groove at the narrower end to the central line is larger than the radius of the loop; the other ends of the left pawl mechanism and the right pawl mechanism are respectively and correspondingly inserted into the two stop block limiting grooves; the other end of the outer sleeve is fixedly connected with the aluminum handle; a locking mechanism is arranged between the outer sleeve and the outer sleeve cap.
When the drill key is used, the other end of the loop bar is connected with the drill key, and the outer sleeve, the loop bar, the outer sleeve cap and the drill key are coaxially arranged. The left pawl mechanism and the right pawl mechanism can be adjusted to be matched with the ratchet teeth by rotating the outer sleeve cap, so that the outer sleeve and the sleeve rod are matched in three different states, and the one-way forward rotation, the one-way reverse rotation or the non-use state of the drill key can be controlled. When the outer sleeve cap rotates towards one direction from an initial state, the position is locked through the locking mechanism, the outer sleeve cap rotates to drive the two stop limiting grooves to rotate simultaneously, the width of one end of the long circular arc groove gradually decreases from the other end of the long circular arc groove, the distance from the inner wall of the long circular arc groove at the wider end to the central line is smaller than the radius of a sleeve rod at the position of ratchet teeth, the distance from the inner wall of the long circular arc groove at the narrower end to the central line is larger than the radius of the sleeve rod at the position of the ratchet teeth, the rotation of one stop limiting groove enables the corresponding left pawl mechanism or right pawl mechanism to be far away from the ratchet teeth, and the other stop limiting groove enables the corresponding left pawl mechanism or right pawl mechanism to be closer to and tightly push against the ratchet teeth, so that the ratchet teeth can only. And the left pawl mechanism or the right pawl mechanism is matched with the ratchet teeth, so that the drill key is not easy to slip or fall off when being rotated, the safety of the operation is ensured, and time and labor are saved during the use.
Preferably, the left pawl mechanism and the right pawl mechanism respectively comprise a pawl stop block and a torsion spring, one side of the pawl stop block is cylindrical, the other side of the pawl stop block is rod-shaped, one side of the cylindrical pawl stop block is limited in the stop block mounting groove, one side of the cylindrical pawl stop block can rotate in the stop block mounting groove, and one side of the rod-shaped pawl stop block points to the ratchet teeth; the spring ring of the torsion spring is fixedly connected with the outer sleeve, and two rotating arms of the torsion spring are respectively fixed with the outer sleeve and one rod-shaped side of the pawl stop block; one end of the pawl check block is inserted into the check block mounting groove, and the other end of the pawl check block is inserted into the check block limiting groove. When the long arc groove-shaped stop block limits the groove to rotate, the long arc groove at the narrower end can push one side of the rod-shaped pawl stop block pointing to the ratchet teeth to be far away from the ratchet teeth, so that the pawl stop block does not influence the rotation of the loop bar; when the long circular arc groove at the wider end rotates to the rod-shaped side of the pawl stop block, the long circular arc groove has no acting force on the pawl stop block, and the rod-shaped side of the pawl stop block presses the ratchet teeth under the action of the torsion spring at the moment to prevent the ratchet teeth from rotating in one direction, so that the loop bar can complete the rotation in one direction and the idle rotation in the other direction under the driving of the outer sleeve.
Preferably, one end of the outer sleeve connected with the outer sleeve cap is provided with a mounting flange, and the outer sleeve cap is connected with the mounting flange through a snap spring. The clamp spring connects the outer sleeve cap with the outer sleeve, and the positions of parts of the left pawl mechanism, the right pawl mechanism and the locking mechanism can be effectively limited; and the arrangement of the clamp spring can ensure that the outer sleeve cap and the outer sleeve can rotate relatively.
Preferably, the locking mechanism comprises a spring hole arranged on an outer sleeve on one side of the stop block mounting groove, a spring is mounted in the spring hole, one end of the spring is fixed with the outer sleeve wall of the spring hole, and the other end of the spring is connected with a steel ball; three steel ball holes are arranged at the positions of the outer sleeve cap corresponding to the spring holes, and the three steel ball holes are uniformly distributed on a circular arc line. When the outer sleeve cap rotates to a certain position, the spring in the spring hole extrudes the steel balls into the corresponding steel ball hole, the state of the outer sleeve cap is locked, and the outer sleeve cap can be driven to rotate simultaneously when the outer sleeve rotates; when the outer sleeve cap needs to rotate to another state, the outer sleeve is limited to rotate by one hand, the outer sleeve cap is rotated by the other hand, at the moment, the steel balls are extruded out of the steel ball holes, and when the outer sleeve cap rotates to a proper position, the steel balls are extruded into the corresponding steel ball holes again.
Preferably, the outer sleeve on the other side of the stop block mounting groove is provided with a semicircular groove, and a pin is fixed on the outer sleeve cap at the corresponding position of the semicircular groove and inserted into the semicircular groove. The length of the arc line between two steel ball holes which are far away from each other is matched with the length of the arc line of the semicircular groove, and when the outer sleeve cap drives the pin to rotate to the end part of the semicircular groove, the steel ball is also extruded into the corresponding steel ball hole; and the cooperation of the pin and the semicircular groove also effectively ensures that the rotating track of the outer sleeve cap is a set track.
Preferably, the outer sleeve and the aluminum handle are wrapped by the silica gel handle, so that the operation is more comfortable in the operation.
Preferably, the two stop block limiting grooves are arranged in a mirror symmetry mode at the axis; the left pawl mechanism and the right pawl mechanism are arranged in a mirror symmetry mode at the axis, and two stop block limiting grooves can be effectively matched with the left pawl mechanism and the right pawl mechanism respectively.
Compared with the prior art, the invention has the beneficial effects that:
the drill key is reasonable in structural design, and the left pawl mechanism and the right pawl mechanism are respectively matched with ratchet teeth, so that reverse confusion of screwing is not easy to occur in the working process of the drill key, and the safe operation is ensured; the handle is easy to hold, the phenomenon of slipping and falling is not easy to occur in the rotating process, and labor is saved in the using process.
Drawings
FIG. 1 is a schematic view of a ratchet bone drill key;
FIG. 2 is a sectional view taken along line A-A in FIG. 1;
FIG. 3 is a partial enlarged view of B in FIG. 1;
FIG. 4 is an exploded view of the ratchet bone drill key;
FIG. 5 is a schematic view of the structure of the jacket;
FIG. 6 is a schematic view of the structure of the outer cap;
FIG. 7 is a schematic view showing a state in which the outer jacket is engaged with the outer cap;
FIG. 8 is a first schematic view of the ratchet bone drill key in a first rotational direction;
FIG. 9 is a schematic view of a second state of the outer sleeve and the outer sleeve cap in a matched state;
FIG. 10 is a second schematic view of the ratchet bone drill key in the rotational direction;
fig. 11 is a three-schematic diagram of the matching state of the outer sleeve and the outer sleeve cap.
In the figure: 1. a silica gel handle; 2. an aluminum handle; 3. a jacket; 4. a pin; 5. an outer cap; 6. a loop bar; 7. drilling a key; 8. a clamp spring; 9. a bearing; 10. a pawl stop; 11. a block mounting groove; 12. a torsion spring; 13. a spring hole; 14. steel ball holes; 15. a spring; 16. steel balls; 17. ratchet teeth; 18. a semicircular groove; 19. the stop defines a slot.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
as shown in fig. 1-11, the ratchet wheel bone drill key of the invention comprises an outer sleeve 3, a loop bar 6 and an outer sleeve cap 5, wherein one end of the outer sleeve 3 is provided with a mounting hole, one end of the loop bar 6 is inserted in the mounting hole, a bearing 9 is arranged between the inner wall of the mounting hole and the loop bar 6, ratchet teeth 17 are arranged on the periphery of the loop bar 6 close to the opening end of the mounting hole in the mounting hole, the walls of the outer sleeve 3 at two sides of the ratchet teeth 17 are provided with block mounting grooves 11, and one ends of a left pawl mechanism and a right pawl mechanism are respectively inserted in the block mounting grooves 11 at; the outer sleeve cap 5 is sleeved on the periphery of the sleeve rod 6 and connected with the outer sleeve 3, two stop block limiting grooves 19 are formed in one side, close to the outer sleeve 3, of the outer sleeve cap 5, the two stop block limiting grooves 19 are long circular arc grooves, the width of one end of each long circular arc groove gradually decreases from the other end of each long circular arc groove, the distance from the inner wall of each long circular arc groove at the wider end to the central line is smaller than the radius of the sleeve rod 6 at the position with the ratchet teeth 17, and the distance from the inner wall of each long circular arc groove at the narrower end to the central line is larger than the radius of the sleeve rod 6 at the; the other ends of the left pawl mechanism and the right pawl mechanism are respectively and correspondingly inserted into the two stop block limiting grooves 19; the other end of the outer sleeve 3 is fixedly connected with the aluminum handle 2; a locking mechanism is arranged between the outer sleeve 3 and the outer sleeve cap 5.
In this embodiment:
the left pawl mechanism and the right pawl mechanism respectively comprise a pawl stop block 10 and a torsion spring 12, one side of the pawl stop block 10 is cylindrical, the other side of the pawl stop block is rod-shaped, one side of the cylindrical pawl stop block 10 is limited in a stop block mounting groove 11, one side of the cylindrical pawl stop block 10 can rotate in the stop block mounting groove 11, and one side of the rod-shaped pawl stop block 10 points to a ratchet tooth 17; the coil of the torsion spring 12 is fixedly connected with the outer sleeve 3, and two rotating arms of the torsion spring 12 are respectively fixed with the outer sleeve 3 and one rod-shaped side of the pawl stop block 10; one end of the pawl stopper 10 is inserted into the stopper mounting groove 11 and the other end is inserted into the stopper defining groove 19. When the long arc groove-shaped stopper limiting groove 19 rotates, the long arc groove at the narrower end pushes one side of the rod-shaped pawl stopper 10 pointing to the ratchet teeth 17 to be far away from the ratchet teeth 17, so that the pawl stopper 10 does not influence the rotation of the loop bar 6; when the long circular arc groove at the wider end rotates to the rod-shaped side of the pawl stop block 10, the long circular arc groove has no acting force on the pawl stop block 10, and the rod-shaped side of the pawl stop block 10 presses the ratchet teeth 17 under the action of the torsion spring 12 to prevent the ratchet teeth 17 from rotating in one direction, so that the loop bar 6 can complete the rotation in one direction and the idle rotation in the other direction under the driving of the outer sleeve 3.
And one end of the outer sleeve 3 connected with the outer sleeve cap 5 is provided with a mounting flange, and the outer sleeve cap 5 is connected with the mounting flange through a clamp spring 8. The clamp spring 8 connects the outer sleeve cap 5 with the outer sleeve 3, and the positions of parts of the left pawl mechanism, the right pawl mechanism and the locking mechanism can be effectively limited; and the arrangement of the clamp spring 8 can enable the outer sleeve cap 5 and the outer sleeve 3 to rotate relatively.
The locking mechanism comprises a spring hole 13 arranged on the outer sleeve 3 on one side of the stop block mounting groove 11, a spring 15 is arranged in the spring hole 13, one end of the spring 15 is fixed with the wall of the outer sleeve 3 of the spring hole 13, and the other end of the spring 15 is connected with a steel ball 16; three steel ball holes 14 are arranged at the positions, corresponding to the spring holes 13, on the outer sleeve cap 5, and the three steel ball holes 14 are uniformly distributed on a circular arc line. When the outer sleeve cap 5 rotates to a certain position, the steel balls 16 are extruded into the corresponding steel ball holes 14 by the springs 15 in the spring holes 13, the state of the outer sleeve cap 5 at the moment is locked, and the outer sleeve cap 5 can be driven to rotate simultaneously when the outer sleeve 3 rotates; when the outer sleeve cap 5 needs to be rotated to another state, one hand limits the rotation of the outer sleeve 3, the other hand rotates the outer sleeve cap 5, at the moment, the steel balls 16 are extruded out of the steel ball holes 14, and when the outer sleeve cap 5 is rotated to a proper position, the steel balls 16 are extruded into the corresponding steel ball holes 14 again.
The outer sleeve 3 at the other side of the stop block mounting groove 11 is provided with a semicircular groove 18, a pin 4 is fixed on the outer sleeve cap 5 at the corresponding position of the semicircular groove 18, and the pin 4 is inserted into the semicircular groove 18. The length of the arc line between two steel ball holes 14 which are far away from each other is matched with the length of the arc line of the semicircular groove 18, and when the outer sleeve cap 5 drives the pin 4 to rotate to the end part of the semicircular groove 18, the steel ball 16 is also extruded into the corresponding steel ball hole 14; and the matching of the pin 4 and the semicircular groove 18 also effectively ensures that the rotating track of the outer sleeve cap 5 is a set track.
The outer sleeve 3 and the aluminum handle 2 are wrapped by the silica gel handle 1, so that the operation is more comfortable in the operation.
The two stop block limiting grooves 19 are arranged in a mirror symmetry mode at the axis; the left pawl mechanism and the right pawl mechanism are arranged in a mirror symmetry mode at the axis, and two stop block limiting grooves 19 can be effectively matched with the left pawl mechanism and the right pawl mechanism respectively.
When the drill key is used, the other end of the sleeve rod 6 is connected with the drill key 7, and the outer sleeve 3, the sleeve rod 6, the outer sleeve cap 5 and the drill key 7 are coaxially arranged. The left pawl mechanism and the right pawl mechanism can be adjusted to be matched with the ratchet teeth 17 by rotating the outer sleeve cap 5, so that the outer sleeve 3 and the sleeve rod 6 can be matched in three different states, and the unidirectional forward rotation, unidirectional reverse rotation or shutdown non-use state of the drill key 7 can be controlled.
The outer sleeve 3 and the outer sleeve cap 5 are in a first matching state, as shown in fig. 7, at the moment, the two stopper limiting grooves 19 have no acting force on the pawl stoppers 10, so that the pawl stoppers 10 are inserted into the ratchet teeth 17 under the action of the torsion springs 12, two directions of the ratchet teeth 17 cannot rotate, and the outer sleeve 3 rotating forward and backward can drive the sleeve rod 6 to rotate, which is equivalent to a common key.
In a second matching state of the outer sleeve 3 and the outer sleeve cap 5, as shown in fig. 8 and 9, when the outer sleeve cap 5 rotates to a certain position according to the direction shown in fig. 8, the steel ball 16 is pressed into the steel ball hole 14 at the corresponding position under the action of the spring 15, the narrower end of the stopper limiting groove 19 at the left side pushes one side of the rod-shaped pawl stopper 10 away from the ratchet teeth 17, so that the pawl stopper 10 of the left pawl mechanism does not affect the rotation of the sleeve rod 6, meanwhile, the wider end of the stopper limiting groove 19 at the right side corresponds to the pawl stopper 10 of the right pawl mechanism, at this time, the stopper limiting groove 19 at the right side has no acting force on the pawl stopper 10, the rod-shaped side of the pawl stopper 10 presses the ratchet teeth 17 under the action of the torsion spring 12 to prevent the ratchet teeth 17 from rotating counterclockwise (as shown in fig. 9), at this time, the outer sleeve 3 rotates according to the rotating direction of the outer sleeve 3 as shown, the ratchet bone drill key 7 completes the tightening action. In this state, if the outer sleeve 3 is rotated in the reverse direction, only idle rotation occurs, and the outer sleeve 3 cannot drive the loop bar 6 to rotate.
The third state of the outer sleeve 3 and the outer sleeve cap 5 are matched, as shown in fig. 10 and 11, when the outer sleeve cap 5 rotates to a certain position according to the direction shown in fig. 10, the steel ball 16 is pressed into the steel ball hole 14 at the corresponding position under the action of the spring 15, the wider end of the left stopper limiting groove 19 corresponds to the pawl stopper 10 of the left pawl mechanism, at this time, the left stopper limiting groove 19 has no action force on the pawl stopper 10 of the left pawl mechanism, the rod-shaped side of the pawl stopper 10 presses the ratchet teeth 17 under the action of the torsion spring 12 to prevent the ratchet teeth 17 from rotating clockwise (as shown in fig. 11), meanwhile, the narrower end of the right stopper limiting groove 19 pushes the rod-shaped pawl stopper 10 side away from the ratchet teeth 17, so that the pawl stopper 10 of the right pawl mechanism does not affect the rotation of the sleeve rod 6, at this time, the outer sleeve 3 rotates according to the rotation direction of the outer sleeve 3 as shown in fig. 10, the outer sleeve, the ratchet wheel bone drill key 7 completes the screwing action. In this state, if the outer sleeve 3 is rotated in the reverse direction, only idle rotation occurs, and the outer sleeve 3 cannot drive the loop bar 6 to rotate.
Claims (7)
1. A ratchet bone drill key which is characterized in that: the ratchet wheel type ratchet wheel comprises an outer sleeve (3), a loop bar (6) and an outer sleeve cap (5), wherein one end of the outer sleeve (3) is provided with a mounting hole, one end of the loop bar (6) is inserted into the mounting hole, a bearing (9) is arranged between the inner wall of the mounting hole and the loop bar (6), ratchet teeth (17) are arranged on the periphery of the loop bar (6) close to the opening end of the mounting hole in the mounting hole, the walls of the outer sleeve (3) at two sides of each ratchet tooth (17) are provided with block mounting grooves (11), and one ends of a left pawl mechanism and one end of a right pawl mechanism are respectively inserted; the outer sleeve cap (5) is sleeved on the periphery of the sleeve rod (6) and connected with the outer sleeve (3), two stop limiting grooves (19) are arranged on one side, close to the outer sleeve (3), of the outer sleeve cap (5), the two stop limiting grooves (19) are both long circular arc grooves, the widths of one ends of the long circular arc grooves to the other ends are gradually decreased, the distance from the inner wall of the long circular arc groove at the wider end to the central line is smaller than the radius of the sleeve rod (6) at the position where the ratchet teeth (17) are arranged, and the distance from the inner wall of the long circular arc groove at the narrower end to the central line is larger than the radius of the sleeve rod (6) at the position where the ratchet teeth (17) are arranged; the other ends of the left pawl mechanism and the right pawl mechanism are respectively and correspondingly inserted into the two stop block limiting grooves (19); the other end of the outer sleeve (3) is fixedly connected with the aluminum handle (2); a locking mechanism is arranged between the outer sleeve (3) and the outer sleeve cap (5).
2. The ratcheting bone drill key of claim 1, wherein: the left pawl mechanism and the right pawl mechanism respectively comprise a pawl stop block (10) and a torsion spring (12), one side of the pawl stop block (10) is cylindrical, the other side of the pawl stop block is rod-shaped, one side of the cylindrical pawl stop block (10) is limited in a stop block mounting groove (11), one side of the cylindrical pawl stop block (10) can rotate in the stop block mounting groove, and one side of the rod-shaped pawl stop block (10) points to ratchet teeth (17); a coil of the torsion spring (12) is fixedly connected with the outer sleeve (3), and two rotating arms of the torsion spring (12) are respectively fixed with the outer sleeve (3) and one rod-shaped side of the pawl stop block (10); one end of the pawl check block (10) is inserted into the check block mounting groove (11), and the other end is inserted into the check block limiting groove (19).
3. The ratcheting bone drill key of claim 1, wherein: and one end of the outer sleeve connected with the outer sleeve cap (5) is provided with a mounting flange plate, and the outer sleeve cap (5) is connected with the mounting flange plate through a clamp spring (8).
4. The ratcheting bone drill key of claim 1, wherein: the locking mechanism comprises a spring hole (13) which is arranged on an outer sleeve on one side of the stop block mounting groove (11), a spring (15) is arranged in the spring hole (13), one end of the spring (15) is fixed with the wall of the outer sleeve (3) of the spring hole (13), and the other end of the spring (15) is connected with a steel ball (16); three steel ball holes (14) are arranged on the outer sleeve cap (5) corresponding to the spring holes (13), and the three steel ball holes (14) are uniformly distributed on a circular arc line.
5. The ratcheting bone drill key of claim 4, wherein: a semicircular groove (18) is arranged on the outer sleeve on the other side of the stop block mounting groove (11), a pin (4) is fixed on the outer sleeve cap (5) at the corresponding position of the semicircular groove (18), and the pin (4) is inserted into the semicircular groove (18).
6. The ratcheting bone drill key of claim 1, wherein: the outer peripheries of the outer sleeve (3) and the aluminum handle (2) are wrapped with the silica gel handle (1).
7. The ratcheting bone drill key of claim 1 or 2, wherein: the two stop block limiting grooves (19) are arranged in a mirror symmetry mode at the axis; the left pawl mechanism and the right pawl mechanism are arranged in mirror symmetry at the axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011300074.9A CN112401968A (en) | 2020-11-19 | 2020-11-19 | Ratchet wheel bone drill key |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011300074.9A CN112401968A (en) | 2020-11-19 | 2020-11-19 | Ratchet wheel bone drill key |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112401968A true CN112401968A (en) | 2021-02-26 |
Family
ID=74773465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011300074.9A Pending CN112401968A (en) | 2020-11-19 | 2020-11-19 | Ratchet wheel bone drill key |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112401968A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115227373A (en) * | 2022-07-04 | 2022-10-25 | 上海三友医疗器械股份有限公司 | Ratchet wheel handle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060243108A1 (en) * | 2003-04-25 | 2006-11-02 | Precimed Sa | Detachable surgical ratchet |
| US20060248988A1 (en) * | 2005-05-05 | 2006-11-09 | Precimed Sa | Coupling device with configurable actuator |
| CN201645389U (en) * | 2010-04-01 | 2010-11-24 | 绍兴恒力工具有限公司 | Ratchet screwdriver |
| CN207710661U (en) * | 2018-01-18 | 2018-08-10 | 佛山市信念行精工科技有限公司 | Ratchet conversion head and screwdriver |
| CN208100209U (en) * | 2018-04-09 | 2018-11-16 | 宁波捷美进出口有限公司 | A kind of commutating structure of ratchet spanner |
| CN109877752A (en) * | 2019-04-15 | 2019-06-14 | 宁波泓谊塑胶科技有限公司 | A kind of internal-gear type ratchet screwdriver |
-
2020
- 2020-11-19 CN CN202011300074.9A patent/CN112401968A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060243108A1 (en) * | 2003-04-25 | 2006-11-02 | Precimed Sa | Detachable surgical ratchet |
| US20060248988A1 (en) * | 2005-05-05 | 2006-11-09 | Precimed Sa | Coupling device with configurable actuator |
| CN201645389U (en) * | 2010-04-01 | 2010-11-24 | 绍兴恒力工具有限公司 | Ratchet screwdriver |
| CN207710661U (en) * | 2018-01-18 | 2018-08-10 | 佛山市信念行精工科技有限公司 | Ratchet conversion head and screwdriver |
| CN208100209U (en) * | 2018-04-09 | 2018-11-16 | 宁波捷美进出口有限公司 | A kind of commutating structure of ratchet spanner |
| CN109877752A (en) * | 2019-04-15 | 2019-06-14 | 宁波泓谊塑胶科技有限公司 | A kind of internal-gear type ratchet screwdriver |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115227373A (en) * | 2022-07-04 | 2022-10-25 | 上海三友医疗器械股份有限公司 | Ratchet wheel handle |
| CN115227373B (en) * | 2022-07-04 | 2024-10-22 | 上海三友医疗器械股份有限公司 | Ratchet handle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2891434A (en) | Ratchet wrench | |
| AU707117B2 (en) | Ratchet wrench | |
| US6418821B1 (en) | Working tool | |
| US7878091B2 (en) | Screwdriving tool with free wheel gear | |
| US8069753B2 (en) | Rotary ratchet wrench | |
| US7600451B2 (en) | Detachable surgical ratchet | |
| JPH11262809A (en) | Boring machine manually operated or impact boring machine | |
| WO2017187388A1 (en) | Power-driven direct drive ratchet/wrench tool | |
| US8960054B2 (en) | Selective one-way wrench | |
| CA2731318C (en) | Extended low-torque ratchet wrench | |
| JP2000141235A (en) | Screwdriver tool | |
| US8726766B1 (en) | One-way torque tool | |
| US7249770B2 (en) | Locking drill chuck | |
| CN112401968A (en) | Ratchet wheel bone drill key | |
| GB1559093A (en) | Ratchet drivers | |
| WO1995017280A1 (en) | Screwdriver | |
| US20130008755A1 (en) | Clutch Capable of Force Transmission in a Selected One of Two Directions | |
| US5332240A (en) | Drill chuck key tool | |
| EP2737977B1 (en) | One-Way Torque Tool | |
| US5201255A (en) | Ratchet wrench | |
| CN104875156A (en) | Clockwise-anticlockwise bidirectional acting type ratchet wrench | |
| US20130333526A1 (en) | Speed mechanism for screw driver | |
| US20110056335A1 (en) | Wrench for Providing Two Operative Modes | |
| US747013A (en) | Pipe-wrench. | |
| EP2295202B1 (en) | Wrench for providing two operative modes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210226 |
|
| RJ01 | Rejection of invention patent application after publication |