CN114321308A

CN114321308A - Feeding mechanism and punching device

Info

Publication number: CN114321308A
Application number: CN202111488560.2A
Authority: CN
Inventors: 不公告发明人
Original assignee: Suzhou Xiaowei Changxing Robot Co ltd
Current assignee: Suzhou Xiaowei Changxing Robot Co ltd
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-04-12
Anticipated expiration: 2041-12-07

Abstract

The present invention relates to a feeding mechanism and a punching apparatus. The feeding mechanism is movably arranged in the rotary drum; the transmission piece is rotatably arranged in the rotary drum and is meshed with the rotary drum and the pushing piece; when the rotary drum rotates, the transmission part can rotate under the driving of the rotary drum so as to drive the pushing part to rotate, so that the first end of the pushing part is screwed out of or into the rotary drum. This feed mechanism, the impeller can be regarded as the drilling rod of drill bit, because the impeller can be by the rotary drum screw-out or screw-in to the rotary drum under the cooperation of rotary drum and driving medium, this makes the drilling rod of drill bit can stretch out and draw back, both can reduce the required space of drill bit in the required space of patient's oral adjustment like this, thereby can reduce the demand of opening degree, also can satisfy the demand to different bottom hole depths under the prerequisite that does not adopt the additional installation extension bar or short planting body, also can avoid the interference of adjacent tooth, need not to extract the adjacent tooth that has the interference, can not increase patient's pain and planting cost.

Description

Feeding mechanism and punching device

Technical Field

The invention relates to the technical field of medical instruments, in particular to a feeding mechanism and a punching device.

Background

The artificial tooth implantation is a common treatment means for treating the missing tooth at present, and is mainly characterized in that an implant with biocompatibility is implanted into an alveolar bone at the missing tooth position, and the implant is tightly combined with the alveolar bone to be used as a base to implant a tooth mould. Wherein, when the implant is implanted, the implant needs to be firstly punched in the alveolar bone and then implanted into the alveolar bone. At present, in the operation of dentistry planting, in order to satisfy the degree of openness and the bottom hole degree of depth demand of different patients and different tooth positions, adopt following four kinds of technical scheme to punch usually: (1) the drill bit is additionally provided with an extension bar; (2) keeping the opening degree by adopting an opening device; (3) the drilling depth is reduced by adopting a short implant; (4) and pulling out the adjacent interfered teeth and re-planting. However, if the above solution (1) is adopted, the openness is affected, and the position of the drill bit is not easily adjusted; if the scheme (2) is adopted, the mouth gag may cause dislocation of the chin of the patient, and the user experience is poor; if the scheme (3) is adopted, the combination area of the short implant and the alveolar bone is reduced, particularly posterior alveolar teeth, so that the occlusion stress function of the implant is weakened; if the scheme (4) is adopted, the pain and the planting cost of the patient are increased, and the cost performance is poor.

Disclosure of Invention

In view of the above, it is desirable to provide a feeding mechanism and a punching apparatus.

A feed mechanism, the feed mechanism comprising: a drum, a pusher, and a transmission member;

the pusher is movably disposed within the drum;

the driving member is rotatably arranged in the drum and is engaged with the drum and the pushing member;

when the rotary drum rotates, the transmission part can rotate under the driving of the rotary drum so as to drive the pushing part to rotate, so that the first end of the pushing part is screwed out of or into the rotary drum.

In one embodiment, the driving member comprises a plurality of driving tooth columns distributed along the circumferential direction of the driving member, the driving tooth columns can rotate around the central axis of the driving tooth columns, and the driving tooth columns are meshed with the rotary drum and the driving member.

In one embodiment, the transmission tooth column comprises a first transmission part and a second transmission part which are coaxially arranged, and the diameter of the first transmission part is larger than that of the second transmission part;

the first transmission part is engaged with the pushing part, and the second transmission part is engaged with the rotary drum; and/or the first transmission part is engaged with the drum, and the second transmission part is engaged with the pushing part.

In one embodiment, the drum has an avoiding groove on an inner wall thereof, the first transmission part is engaged with the pushing part corresponding to the avoiding groove, and the second transmission part is engaged with the drum.

In one embodiment, the number of the first transmission parts is at least 1, the number of the second transmission parts is at least 2, the first transmission parts and the second transmission parts are alternately distributed along the axial direction of the transmission tooth column, and the second transmission parts are arranged at two axial ends of the transmission tooth column.

In one embodiment, the transmission further comprises a first planet carrier disposed within the drum;

the first planet carrier is provided with a plurality of limiting holes, the end part of the transmission tooth column close to the first planet carrier is provided with a limiting column, the limiting column extends into the corresponding limiting hole, and/or the first planet carrier is provided with a plurality of limiting columns, the end part of the transmission tooth column close to the first planet carrier is provided with a limiting groove, and the limiting column extends into the corresponding limiting groove.

In one embodiment, the feeding mechanism further comprises an end cap for pressing the transmission member into the drum.

In one embodiment, the feeding mechanism further includes an elastic member disposed between the transmission member and the end cover and configured to apply an axial pre-tightening force to the transmission member.

In one embodiment, the elastic member includes a butterfly washer, the butterfly washer is sleeved on the pushing member, and two end faces of the butterfly washer are respectively abutted against the transmission member and the end cover.

In one embodiment, the elastic member further includes a flat washer, the flat washer is sleeved on the pushing member, and two end faces of the flat washer are respectively abutted against the end cover and the butterfly washer.

In one embodiment, the end cap comprises a top cover and a pressing part connected with the top cover and inserted into the rotary drum;

the pushing piece is provided with a second end far away from the first end, and a friction part is arranged on the outer wall of the second end and can slide on the inner wall of the pressing part along the axial direction of the pushing piece.

In one embodiment, the friction portion is located at a port of the pressing portion when the first end of the pushing member is unscrewed to the limit position.

In one embodiment, the pushing member has a second end far away from the first end, and the second end is provided with a first stop portion, and when the first end of the pushing member is unscrewed, the first stop portion can be abutted with the driving member to stop the unscrewing of the pushing member.

In one embodiment, a first anti-collision piece is arranged on an end surface of the first stop part, which is close to the transmission piece, and the first anti-collision piece can abut against the transmission piece when the pushing piece is screwed out to the limit position.

In one embodiment, the outer wall of the drum is provided with conical teeth along its circumference.

In one embodiment, the first end of the pusher has a mounting location disposed thereon;

the feeding mechanism further comprises a drill bit clamp, and the drill bit clamp is arranged on the mounting position of the pushing piece;

the drill bit clamp is characterized in that a magnetic part is arranged in the drill bit clamp, an installation interface is arranged on the end face, far away from the pushing part, of the drill bit clamp, the installation interface corresponds to the magnetic part, and the installation interface is of a non-circular hole structure.

In one embodiment, a second stop portion is arranged at one end of the drill chuck far away from the pushing member, and the second stop portion is used for stopping the movement when the first end of the pushing member is screwed to the limit position.

In one embodiment, a second anti-collision member is disposed on an end surface of the second stop portion close to the transmission member.

The feeding mechanism can be applied to dental implant surgery, and when the feeding mechanism is applied, the rotary drum of the feeding mechanism can drive the first end of the pushing piece to be screwed out or screwed into the rotary drum through forward rotation or reverse rotation, so that the drill bit on the first end of the pushing piece drills a socket hole with a preset depth on an alveolar bone of a patient in a mode of repeated feeding and withdrawing. Then, in the dental surgery, the doctor can be in order to adjust the space of drill bit to planning position to receive the restriction of opening degree, install feed mechanism additional at the perforating device head, wherein feed mechanism's impeller can be regarded as the drilling rod of drill bit, because the impeller can be by the rotary drum screw-out or screw-in to the rotary drum under the cooperation of rotary drum and driving medium, this makes the drilling rod of drill bit can stretch out and draw back, both can reduce the required space of drill bit adjustment in patient's oral cavity like this, thereby can reduce the demand of opening degree, also can satisfy the demand to different bottom opening depths under the prerequisite of not adopting additional extension bar or short planting body, also can avoid the interference of adjacent tooth, need not to extract the adjacent tooth that has the interference, can not increase patient's pain and planting cost.

A punch device, the punch device comprising: a handle and a feeding mechanism as described in any of the above;

the head of the handle is provided with a mounting cavity, the rotating drum of the feeding mechanism is rotatably arranged in the mounting cavity, and the first end of the transmission piece of the feeding mechanism can be screwed out of or into the mounting cavity through the mounting cavity.

In one embodiment, the punching device further comprises a driving member and a rotating shaft which are arranged in the handle;

the driving piece can drive the rotary drum to rotate through a rotating shaft, and an included angle which is larger than 0 degree and smaller than 180 degrees is formed between the central axis of the rotating shaft and the central axis of the pushing piece.

In one embodiment, the rotating shafts comprise a first rotating shaft and a second rotating shaft, and an included angle between the first rotating shaft and the second rotating shaft is greater than 0 ° and less than 180 °;

the punching device further comprises a speed reducer, the first rotating shaft is arranged between the rotating drum and the speed reducer, and the second rotating shaft is arranged between the speed reducer and the driving piece.

In one embodiment, a first transmission gear is disposed on the first rotating shaft, a second transmission gear is disposed on the second rotating shaft, and the speed reducer includes: the gear shell, the second planet carrier and the plurality of reduction gears;

the tooth shell set up in the handle and be provided with the driving tooth on the inner wall, the second planet carrier be located in the tooth shell and with the meshing of first drive gear, reduction gear set up in on the second planet carrier, reduction gear surround in around the second pivot and with second drive gear the driving tooth meshing.

In one embodiment, the rotating shaft is provided with a first bearing and a second bearing in sequence along the axial direction of the rotating shaft, the first bearing is axially positioned through a first clamping ring, and the second bearing can move in the axial direction of the rotating shaft.

In one embodiment, the punching device further comprises a position sensor arranged between the rotating shaft and the inner wall of the handle, and the position sensor is used for acquiring and sending the rotation amount or the rotation advance amount of the first end of the pushing piece of the feeding mechanism.

In one embodiment, the outer wall of the head of the handle is provided with a spray head.

In one embodiment, the outer wall of the handle is provided with a non-slip part, and the non-slip part is of a convex structure or a groove structure.

The punching device can be applied to dental implant surgery, and when the punching device is applied, the rotary drum of the feeding mechanism can drive the first end of the pushing piece to be screwed out or screwed into the rotary drum through positive rotation or reverse rotation, so that the drill bit on the first end of the pushing piece drills out a socket hole with a preset depth on the alveolar bone of a patient in a mode of repeatedly feeding and withdrawing. Then, in the dental surgery, the doctor can be in order to adjust the space of drill bit to planning position to receive the restriction of opening degree, install feed mechanism additional at the perforating device head, wherein feed mechanism's impeller can be regarded as the drilling rod of drill bit, because the impeller can be by the rotary drum screw-out or screw-in to the rotary drum under the cooperation of rotary drum and driving medium, this makes the drilling rod of drill bit can stretch out and draw back, both can reduce the required space of drill bit adjustment in patient's oral cavity like this, thereby can reduce the demand of opening degree, also can satisfy the demand to different bottom opening depths under the prerequisite of not adopting additional extension bar or short planting body, also can avoid the interference of adjacent tooth, need not to extract the adjacent tooth that has the interference, can not increase patient's pain and planting cost.

Drawings

FIG. 1 is a cross-sectional view of a feeding mechanism provided in accordance with an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a punching apparatus according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of FIG. 2;

FIG. 4 is a schematic structural diagram of a drilling apparatus without a driving member and a drill bit according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of a drilling apparatus without a driver and drill bit installed therein according to an embodiment of the present invention;

FIG. 6 is an enlarged partial schematic view of FIG. 5 at A;

FIG. 7 is an enlarged partial schematic view of FIG. 1 at A;

FIG. 8 is a front view of a drive tooth post provided in accordance with one embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a transmission tooth post according to an embodiment of the present invention;

FIG. 10 is a side view of a feed mechanism provided in accordance with an embodiment of the present invention;

FIG. 11 is a schematic structural view of a pusher member provided in accordance with an embodiment of the present invention;

FIG. 12 is an enlarged partial schematic view of FIG. 6 at A;

FIG. 13 is a cross-sectional view of the feed mechanism provided in accordance with one embodiment of the present invention with the pusher member rotated out of the limit position;

FIG. 14 is an enlarged partial schematic view at A of FIG. 13;

FIG. 15 is a schematic structural diagram of a drum according to an embodiment of the present invention;

FIG. 16 is a cross-sectional view of a bit holder according to an embodiment of the present invention;

FIG. 17 is a schematic view of a bit holder according to an embodiment of the present invention;

FIG. 18 is a cross-sectional view of the feed mechanism provided in accordance with one embodiment of the present invention with the pusher member screwed into the extreme position;

FIG. 19 is a schematic view of the internal structure of a handle according to an embodiment of the present invention;

FIG. 20 is a schematic cross-sectional view of a retarder according to an embodiment of the present invention;

FIG. 21 is a schematic structural view of a drilling apparatus without a driving member and a drill bit according to an embodiment of the present invention;

fig. 22 is an enlarged partial schematic view at a of fig. 21.

Wherein the reference numerals in the accessories are explained as follows:

10. a feed mechanism; 100. a rotating drum; 100a, avoiding grooves; 110. a tapered tooth; 200. a pusher member; 210. a friction portion; 220. a first stopper portion; 230. a first bumper; 300. a transmission member; 310. a transmission tooth column; 311. a first transmission unit; 312. a second transmission part; 313. a limiting column; 320. a first carrier; 320a and a limiting hole; 400. an end cap; 410. a top cover; 420. a pressing part; 500. an elastic member; 510. a butterfly washer; 520. a flat washer; 600. a bit holder; 600a, installing an interface; 600a1, guide ramp; 610. a magnetic member; 620. a second stopper portion; 630. a second bumper; 20. a handle; 20a, a mounting cavity; 20b, an anti-slip part; 20c, a third bearing; 20d, a seal; 20e, a dust cover; 30. a rotating shaft; 30a, a first rotating shaft; 30a1, a first drive gear; 30b, a second rotating shaft; 30c, a first bearing; 30d, a second bearing; 30e, a first snap ring; 30f, locking a nut; 30g, a brake nut; 30h, a second snap ring; 30i, a fourth bearing; 40. a speed reducer; 40a, a gear shell; 40b, a second planet carrier; 40c, a reduction gear; 50. a position sensor; 50a, a reading head; 50b, code disc; 60. a spray head; 70. a drill bit; 80. a drive member.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

An embodiment of the present invention provides a feeding mechanism 10, as shown in fig. 1, the feeding mechanism 10 including: drum 100, pusher 200, and driver 300; the pusher 200 is movably disposed within the bowl 100; transmission member 300 is rotatably disposed within drum 100 and is engaged with drum 100 and pusher member 200; when the drum 100 rotates, the transmission member 300 can rotate under the driving of the drum 100 to drive the pushing member 200 to rotate, so that the first end of the pushing member 200 is screwed out of the drum 100 or screwed into the drum 100.

The above-described feeding mechanism 10 is applicable to fields including, but not limited to, medical instruments, such as a punch device used in a dental implant procedure. The structure and operation of the feeding mechanism 10 will be described below by taking the punching apparatus shown in fig. 2 to 5 as an example.

The drilling device may include a handle 20, and a drill 70, a driving member 80, and a rotating shaft 30 disposed on the handle 20. Further, the head of the handle 20 has a mounting cavity, the drum 100 of the feeding mechanism 10 is rotatably disposed in the mounting cavity, and the driving member 80 can drive the drum 100 to rotate through the rotating shaft 30; the first end of the pushing piece 20 of the feeding mechanism 10 can be screwed out of or into the mounting cavity; the drill bit 70 may be mounted directly to the mounting location of the first end of the pusher member 200 or to the mounting location of the first end of the pusher member 200 by means of a bit holder 600 as shown in figure 6.

In the dental implant operation, the driving member 80 drives the rotary drum 100 to rotate forward through the rotary shaft 30, the transmission member 300 is driven by the rotary drum 100 to rotate so as to drive the second end of the pushing member 200 to rotate forward, so that the first end of the pushing member 200 is screwed out of the rotary drum 100, and the drill 70 on the first end of the pushing member 200 outputs a certain feeding amount to the alveolar bone of a patient, so that a hole can be drilled in the alveolar bone; the driving member 80 drives the drum 100 to rotate reversely through the rotating shaft 30, the driving member 300 is driven by the drum 100 to rotate so as to drive the second end of the pushing member 200 to rotate reversely, so that the first end of the pushing member 200 is screwed into the drum 100, and the drill 70 on the first end of the pushing member 200 is withdrawn from the alveolar bone of the patient. Thereafter, the above steps may be repeated, that is, the drill 70 is repeatedly fed and withdrawn until a cavity of a predetermined depth is formed in the alveolar bone.

It can be seen that the above-mentioned feeding mechanism 10 can be applied to the dental implant operation, and in the application, the rotary drum 100 of the feeding mechanism 10 can drive the first end of the pushing member 200 to be screwed out of or into the rotary drum 100 by forward rotation or reverse rotation, so that the drill 70 on the first end of the pushing member 200 drills a socket hole with a preset depth on the alveolar bone of a patient by means of repeated feeding and withdrawing. Then, in the dental operation, in order to adjust the space of the drill 70 to the planned position, the doctor can be limited by the flare degree, the feeding mechanism 10 is additionally arranged at the head of the perforating device, wherein the pushing member 200 of the feeding mechanism 10 can be regarded as the drill rod of the drill 70, because the pushing member 200 can be screwed out or screwed into the rotary drum 100 by the rotary drum 100 under the matching of the rotary drum 100 and the transmission member 300, the drill rod of the drill 70 can be extended and contracted, thus, the space required by the adjustment of the drill 70 in the oral cavity of the patient can be reduced, the requirement of the flare degree can be reduced, the requirement of different bottom hole depths can be met on the premise of not adopting an additional lengthening rod or a short implant, the interference of adjacent teeth can be avoided, the adjacent teeth with interference do not need to be pulled out, and the pain and the implantation cost of the patient can not be increased.

As shown in fig. 6, in some embodiments of the invention, the transmission member 300 comprises a plurality of transmission tooth columns 310 distributed along the circumferential direction of the pushing member 200, the transmission tooth columns 310 being capable of rotating around their central axes, the transmission tooth columns 310 being engaged with the drum 100 and the pushing member 200. The transmission member 300 has a simple structure, and the transmission member 300 can be driven by the drum 100 to rotate.

It can be understood that the inner wall of the drum 100 is provided with helical teeth, the outer wall of the pushing member 200 is provided with helical teeth, and the outer wall of the transmission toothed column 310 is provided with helical teeth matched with the helical teeth of the drum 100 and the pushing member 200. The cross section of the thread teeth of the driving tooth column 310 is isosceles triangle or isosceles trapezoid shown in fig. 8, so as to ensure that the driving tooth column 310 can transmit torque to the pushing member 200 in both forward and reverse directions, so that the pushing member 200 is screwed out of the drum 100 or screwed into the drum 100.

The plurality of drive tooth posts 310 may be evenly distributed along the circumference of the pusher 200 to provide a smoother rotation of the pusher 200. The number of the transmission tooth columns 310 can be set to be 2, 3, 4, 5 or more, and can be selected according to specific needs. For example, a small number of driving tooth columns 310, such as 2 or 3, may be provided only for satisfying the requirement of smooth rotation of the pushing member 200, and if a better requirement is required for the rigidity and strength of the entire feeding mechanism 10, more driving tooth columns 310, such as 5 or 6, may be provided.

As for the structure of the transmission tooth column 310, as shown in fig. 7 to 9, the transmission tooth column 310 includes a first transmission part 311 and a second transmission part 312 which are coaxially arranged, and the diameter of the first transmission part 311 is larger than that of the second transmission part 312; the first transmission part 311 is engaged with the pusher 200, and the second transmission part 312 is engaged with the drum 100; and/or the first transmission part 311 is engaged with the drum 100 and the second transmission part 312 is engaged with the pusher 200. The transmission toothed column 310 with the structure can ensure that all parts of the transmission toothed column do not interfere with each other, so that the transmission toothed column can be effectively meshed with the rotary drum 100 and the pushing piece 200.

Specifically, in some embodiments of the present invention, as shown in fig. 7, the inner wall of the drum has an avoiding groove 100a, the first transmission part 311 corresponds to the avoiding groove 100a and is engaged with the pushing member 200, and the second transmission part 312 is engaged with the drum 100. Thus, the pushing member 200 does not need to be provided with the avoiding groove 100a, the strength of the pushing member 200 can be ensured, and the pushing member 200 is ensured not to be broken in the drilling process of the drill bit 70. The avoiding groove 100a may be a single annular groove structure or a structure formed by a plurality of grooves distributed at intervals in the circumferential direction.

Further, in some embodiments of the present invention, as shown in fig. 7 to 9, the number of the first transmission portions 311 is at least 1, the number of the second transmission portions 312 is at least 2, the first transmission portions 311 and the second transmission portions 312 are alternately distributed along the axial direction of the transmission tooth column 310, and the second transmission portions 312 are disposed at both axial ends of the transmission tooth column 310. Specifically, the number of the first transmission parts 311 is 1, the number of the second transmission parts 312 is 2, and 2 second transmission parts 312 are disposed at both axial ends of the first transmission parts 311. Compared with a structure with a thin middle part and thick two ends, the transmission toothed column 310 with the structure can have certain strength and is not easy to break on the premise that the rotary drum 100 can effectively drive the transmission toothed column 310 to rotate. For the case where the first transmission part 311 is engaged with the drum 100 and the second transmission part 312 is engaged with the pushing member 200, the number of the first transmission part 311 and the second transmission part 312 is 1.

In the case where transmission member 300 includes a plurality of transmission tooth columns 310, as shown in fig. 10 and 14, transmission member 300 further includes a first planet carrier 320 disposed in drum 100; the first planet carrier 320 is provided with a plurality of limiting holes 320a (see fig. 10), the end part of the transmission toothed column 310 close to the first planet carrier 320 is provided with a limiting column 313 (see fig. 9), the limiting column 313 extends into the corresponding limiting hole 320a, and/or the first planet carrier 320 is provided with a plurality of limiting columns, the end part of the transmission toothed column 310 close to the first planet carrier is provided with a limiting groove, and the limiting column extends into the corresponding limiting groove. The first planet carrier 320 can ensure that each transmission tooth column 310 can rotate at a fixed position and does not generate a phenomenon of mixing.

In consideration of the ease of processing, it is preferable that the first carrier 320 is provided with a plurality of stopper holes 320a, and the stopper posts 313 are formed at the ends of the transmission tooth posts 310. The number and the distribution positions of the limiting holes 320a are the same as those of the driving tooth posts 310, for example, the number of the driving tooth posts 310 is 3, and the 3 driving tooth posts 310 are uniformly distributed along the circumferential direction of the pushing member 200, so that the number of the limiting holes 320a on the first planet carrier 320 is also 3, and the 3 limiting holes 320a are uniformly distributed along the circumferential direction of the pushing member 200.

As shown in fig. 6, in some embodiments of the present invention, the feeding mechanism 10 further comprises an end cap 400, and the end cap 400 is used for pressing the transmission member 300 into the drum 100. End cap 400 may directly abut first carrier 320 of drive member 300 to compress drive teeth 310 of drive member 300 between first carrier 320 and the bottom wall of bowl 100, thus ensuring that each drive teeth 310 may spin in a fixed position.

Further, in some embodiments of the present invention, as shown in fig. 6, the feeding mechanism 10 further includes an elastic member 500, and the elastic member 500 is disposed between the transmission member 300 and the end cover 400 and is configured to apply an axial pre-load force to the transmission member 300. The elastic member 500 can prevent the end cover 400 from pressing the transmission toothed column 310 too tightly to cause the transmission toothed column 310 to be incapable of rotating, so that the normal meshing of the transmission toothed column 310 and the roller and the pushing member 200 can be ensured.

Regarding the structure of the elastic member 500, as shown in fig. 6, the elastic member 500 includes a butterfly washer 510, the butterfly washer 510 is sleeved on the pushing member 200, and two end faces of the butterfly washer 510 are respectively abutted against the transmission member 300 and the end cap 400. Compared with the elastic element 500 with a spring structure, the butterfly washer 510 has a simple structure and can apply sufficient axial pre-tightening force to the transmission element 300 by itself generating a small deformation. In consideration of the characteristic of small force-bearing area of the butterfly washer 510, in some embodiments of the present invention, as shown in fig. 6, the elastic member 500 further includes a flat washer 520, the flat washer 520 is sleeved on the pushing member 200, and two end surfaces of the flat washer 520 are respectively abutted against the end cap 400 and the butterfly washer 510. The flat washer 520 can ensure that the first planet carrier 320 of the transmission member 300 is uniformly stressed, and can better enable the transmission toothed column 310 to rotate at a fixed position.

With the feeding mechanism 10 further comprising an end cap 400, as shown in fig. 6, in some embodiments of the present invention, the end cap 400 comprises a top cover 410 and a pressing portion 420 connected to the top cover 410 and inserted into the drum 100; as shown in fig. 11, the outer wall of the second end of the pushing member 200 is provided with a friction portion 210, and the friction portion 210 can slide on the inner wall of the pressing portion 420 along the axial direction of the pushing member 200. The friction portion 210 may guide the rotation of the pushing member 200. Alternatively, the friction part 210 may be a rubber ring.

Further, in some embodiments of the present invention, as shown in fig. 12 and 13, when the first end of the pushing member 200 is screwed out to the limit position, the friction portion 210 is located at the port of the pressing portion 420. It will be appreciated that once the first end of the pusher member 200 has been unscrewed to the limit, it cannot be further unscrewed. When the first end of the pushing member 200 is screwed out to the limit position, the friction portion 210 still plays a guiding role of screwing the pushing member 200 into the drum 100, thereby ensuring the full-range movement of the pushing member 200.

As shown in fig. 11, 13 and 14, in some embodiments of the present invention, a first stop portion 220 is disposed on the second end of the pushing member 200, and when the first end of the pushing member 200 is unscrewed, the first stop portion 220 can abut against the driving member 300, so that the pushing member 200 stops being unscrewed. The first stop portion 220 can prevent the pushing member 200 from being rotated out of the drum 100 as a whole to prevent the pushing member 200 from rotating back into the drum 100. As an example, as shown in fig. 13, the first stopper portion 220 can abut against the first carrier 320 of the driving member 300 to stop the rotation of the pushing member 200. As an example, the friction portion 210 may be disposed on a sidewall of the first stop portion 220, which may ensure that the friction portion 210 can better cling to the pressing portion 420 of the end cap 400; an annular groove is formed on a side wall of the first stopper portion 220, and the friction portion 210 may be installed in the annular groove by welding or the like.

Alternatively, as shown in fig. 11 and 13, a first anti-collision member 230 is provided on an end surface of the first stopper portion 220 close to the transmission member 300, and the first anti-collision member 230 can abut against the transmission member 300 when the pushing member 200 is rotated out to the limit position. The first anti-collision member 230 can prevent rigid stress when the first stop portion 220 abuts against the transmission member 300, thereby protecting the pushing member 200 and the transmission member 300. The first anti-collision member 230 may be a rubber pad, and may be fixed on the end surface of the first stop portion 220 close to the transmission member 300 by bonding or the like.

As shown in FIG. 15, in some embodiments of the invention, the outer wall of the drum 100 is provided with tapered teeth 110 along its circumference. In this manner, the drum 100 may be driven to rotate by way of a toothed transmission. It will be appreciated that the end of the shaft 30 of the perforating device is provided with conical teeth adapted to the conical teeth 110 on the outer wall of the drum 100, which can change the direction of transmission compared to cylindrical teeth, so that the extension and retraction directions of the pusher 200 are distributed at a predetermined angle (for example 90 °) to the axial direction of the shaft 30.

In some embodiments of the invention, as shown in fig. 6 and 12, a mounting location is provided on a first end of the pusher member 200; the feeding mechanism 10 further comprises a bit holder 600, and the bit holder 600 is arranged on the mounting position of the pushing member 200; as shown in fig. 16 and 17, a magnetic member 610 is disposed in the bit holder 600, an end surface of the bit holder 600 away from the pushing member 200 is provided with a mounting interface 600a, the mounting interface 600a corresponds to the magnetic member 610, and the mounting interface 600a is a non-circular hole structure. The bit holder 600 may be connected to bits 70 of different lengths and diameters by a magnetic member 610, and the bits 70 may be disengaged by applying a counter force greater than the magnetic attraction force when changing bits. Wherein, the joint of drill bit 70 is installed in the installation interface 600a of drill bit clamp 600, and the installation interface 600a of non-round hole structure is used for transmitting the moment of torsion to drill bit 70 to can guarantee that drill bit clamp 600 can drive drill bit 70 and rotate together.

Optionally, the bit holder 600 is threadedly coupled to the pusher member 200. Specifically, a counter bore is formed in the first end of the pushing member 200, threads are formed on the wall of the counter bore, and a screw rod is arranged on the drill holder 600 and fixed in the counter bore. During assembly, the drill bit 70 can be assembled in place through the threaded member and then welded to the abutting surfaces, thereby ensuring the reliability of the installation of the drill bit holder 600.

Alternatively, the mounting interface 600a may have a polygonal structure, such as a triangular, quadrilateral, or pentagonal structure, or a combination of curved and flat surfaces as shown in fig. 4 and 17.

Optionally, an end of the mounting interface 600a distal from the pusher 200 is provided with a guide ramp 600a 1. During reloading, the drill bit 70 may be slid into the mounting interface 600a of the bit holder 600 by first rotating the drill bit 70 such that the chamfer on the drill bit 70 is aligned with the guide ramp 600a1 on the mounting interface 600a of the bit holder 600.

Further, in some embodiments of the invention, as shown in fig. 16 and 17, a second stop 620 is provided on an end of the bit holder 600 away from the pushing member 200, and the second stop 620 is used to stop the movement when the first end of the pushing member 200 is screwed to the limit position. As an example, when the first end of the pushing member 200 is screwed into the drum 100, the second stopper 620 can abut against the head of the handle 20 of the punching device to stop the pushing member 200 from screwing.

Alternatively, as shown in fig. 18, when the first end of the pusher member 200 is screwed into the extreme position, there is a guard gap between the second end of the pusher member 200 and the cap 410. In this manner, the pusher 200 can be prevented from colliding and interfering with the end cap 400.

Alternatively, as shown in fig. 16 and 17, a second bumper 630 may be provided on an end surface of the second stopper 620 adjacent to the transmission member 300. The second anti-collision piece 630 can abut against the head of the handle 20 of the punching device when the pushing piece 200 is screwed to the limit position, so that rigid stress is avoided, and the drill clamp 600 is protected. The second anti-collision member 630 may be a rubber pad, and may be fixed to the second stopper 620 by adhesion or the like.

Another embodiment of the present invention provides a punching device, as shown in fig. 2, including a handle 20 and the feeding mechanism 10 described in any one of the above embodiments; the head of the handle 20 has a mounting cavity in which the rotating drum 100 of the feeding mechanism 10 is rotatably disposed, and the first end of the transmission member 300 of the feeding mechanism 10 can be screwed out of or into the mounting cavity.

It can be seen that the above-mentioned punching device can be applied to the dental implant operation, and in the application, the rotary drum 100 of the feeding mechanism 10 can drive the first end of the pushing member 200 to be screwed out of or into the rotary drum 100 by forward rotation or reverse rotation, so that the drill 70 on the first end of the pushing member 200 drills a socket hole with a preset depth on the alveolar bone of the patient by means of repeated feeding and withdrawing. Then, in the dental operation, in order to adjust the space of the drill 70 to the planned position, the doctor can be limited by the flare degree, the feeding mechanism 10 is additionally arranged at the head of the perforating device, wherein the pushing member 200 of the feeding mechanism 10 can be regarded as the drill rod of the drill 70, because the pushing member 200 can be screwed out or screwed into the rotary drum 100 by the rotary drum 100 under the matching of the rotary drum 100 and the transmission member 300, the drill rod of the drill 70 can be extended and contracted, thus, the space required by the adjustment of the drill 70 in the oral cavity of the patient can be reduced, the requirement of the flare degree can be reduced, the requirement of different bottom hole depths can be met on the premise of not adopting an additional lengthening rod or a short implant, the interference of adjacent teeth can be avoided, the adjacent teeth with interference do not need to be pulled out, and the pain and the implantation cost of the patient can not be increased.

In some embodiments of the present invention, the punch device further comprises a driving member 80 disposed in the handle 20 and a rotating shaft 30; the driving member 80 can drive the drum 100 to rotate through the rotating shaft 30, and an included angle between the central axis of the rotating shaft 30 and the central axis of the pushing member 200 is greater than 0 ° and less than 180 °. The included angle between the central axis of the rotating shaft 30 and the central axis of the pushing member 200 is set to be an angle larger than 0 degree and smaller than 180 degrees, which is beneficial to aligning the drill 70 with any alveolar bone, thereby facilitating drilling. Alternatively, the drive member 80 may be a motor. The connection mode of the motor and the handle can be a plug-in type, namely the motor and the handle are coaxially butted and inserted, then the motor and the handle are twisted relatively left and right, and the connection in place is indicated by hearing the 'clicking and rubbing' sound; when the two parts are separated, the reverse force is directly exerted to coaxially and reversely draw out the two parts.

Further, as shown in fig. 19, in some embodiments of the present invention, the rotating shaft 30 includes a first rotating shaft 30a and a second rotating shaft 30b, and an included angle between the first rotating shaft 30a and the second rotating shaft 30b is greater than 0 ° and less than 180 °; the handle 20 further includes a reducer 40, the first rotating shaft 30a is disposed between the drum 100 and the reducer 40, and the second rotating shaft 30b is disposed between the reducer 40 and the driving member 80. The rotation shaft 30 is configured to match the first rotation shaft 30a and the second rotation shaft 30b3, and the handle 20 can be correspondingly configured to be bent to facilitate the insertion of the drill 70 into the posterior socket teeth, thereby facilitating the repair of the posterior socket teeth.

In some embodiments of the present invention, as shown in fig. 19, a first transmission gear 30a1 is disposed on the first rotating shaft 30a, a second transmission gear is disposed on the second rotating shaft 30b, and the speed reducer 40 includes: a gear housing 40a, a second carrier 40b, and a plurality of reduction gears 40c (see fig. 20); the gear housing 40a is disposed in the handle 20, and the inner wall thereof is provided with a transmission gear, the second planet carrier 40b is disposed in the gear housing 40a and engaged with the first transmission gear 30a1, the reduction gear 40c is disposed on the second planet carrier 40b, and the reduction gear 40c surrounds the second rotating shaft 30b and is engaged with the second transmission gear and the transmission gear. When the second rotating shaft 30b is driven by the driving member 80 to rotate, the second transmission gear thereon can drive the reduction gear 40c to rotate around the transmission teeth on the gear housing 40a, and the reduction gear 40c can thereby drive the second planet carrier 40b to rotate; then, the first transmission gear 30a1 on the first rotating shaft 30a is engaged by the second planet carrier 40b to rotate, thereby rotating the rotating drum 100.

Alternatively, the reduction gears 40c may be uniformly distributed along the circumferential direction of the second rotating shaft 30b, thus facilitating smooth rotation of the second carrier 40 b. With respect to the number of the reduction gears 40c, the embodiment of the present invention is not particularly limited, for example, 2, 3, 4 or more are provided.

Alternatively, the first transmission gear 30a1 can be integrally formed or otherwise assembled on the first rotating shaft 30a, for example, as shown in fig. 19, a stop screw 30g and a second snap ring 30h are disposed on the first rotating shaft 30a, and the first transmission gear 30a1 is limited between the stop screw 30g and the second snap ring 30 h.

Alternatively, as shown in fig. 19, the second rotating shaft 30d may be rotatably provided in the handle 20 by a fourth bearing 30i, thus facilitating the rotation of the second rotating shaft 30 d.

As shown in fig. 19, in some embodiments of the present invention, the rotating shaft 30 is provided with a first bearing 30c and a second bearing 30d in sequence along the axial direction thereof, the first bearing 30c is axially positioned by a first snap ring 30e, and the second bearing 30d can move in the axial direction of the rotating shaft 30. The first bearing 30c can ensure the normal rotation of the rotation shaft 30, and the movement of the second bearing 30d can prevent the rotation shaft 30 from locking due to expansion and contraction. As an example, the first bearing 30c and the second bearing 30d are disposed on the first rotating shaft 30a and are sequentially distributed in a direction from the decelerator 40 to the drum 100. Alternatively, the number of the first snap rings 30e is 2 and the first bearings 30c are spaced apart from each other on the first rotating shaft 30a3, and the 2 first snap rings 30e are interposed between the first bearings 30 c.

In the case that the punching apparatus further includes the rotating shaft 30, as shown in fig. 19, in some embodiments of the present invention, the punching apparatus further includes a position sensor 50 disposed between the rotating shaft 30 and the inner wall of the handle 20, and the position sensor 50 is used for acquiring and transmitting the amount of rotation or the amount of rotation of the first end of the pushing member 200 fed into the feeding mechanism 10. With the position sensor 50, the amount of rotation or run-in of the first end of the pusher 200 can be captured, thereby enabling drilling of a desired depth of cavity in the alveolar bone.

Alternatively, the position sensor 50 may be a measuring encoder, as shown in FIG. 19, including a reading head 50a disposed on the handle 20 and sleeved outside the rotating shaft 30 and a code wheel 50b disposed on the rotating shaft 30. When the shaft 30 rotates, the reading head 50a can determine the rotating angle of the shaft 30 by reading the number on the code disc 50b, so that the amount of the rotation or the screwing-in amount of the first end of the pushing member 200 can be determined.

In some embodiments of the invention, as shown in fig. 21 and 22, a spray head 60 is provided on the outer wall of the head of the handle 20. The spray head 60 may be externally connected to a pipe so as to provide a cooling fluid (for example) to the drill bit 70 to cool the drill bit 70.

As shown in fig. 4, in some embodiments of the present invention, the handle 20 is provided with a non-slip portion 20b on an outer wall thereof, and the non-slip portion 20b has a protrusion structure or a groove structure. The anti-slip portion 20b can increase friction of hand holding, and improve the holding experience. Alternatively, the slip prevention part 20b is provided at the bent portion of the handle 20.

In some embodiments of the present invention, as shown in fig. 6, the drum 100 of the feeding mechanism 10 is rotatably disposed in the mounting cavity of the head of the handle 20 by a third bearing 20c, thus facilitating the rotation of the drum 100.

Alternatively, the number of the third bearings 20c may be 2, wherein one of the third bearings 20c is distributed near the top cover 410 of the end cover 400 and the other third bearing 20c is distributed near the bit holder 600. Specifically, a first limit boss is arranged in the mounting cavity of the head of the handle 20, and one of the third bearings 20c is mounted between the top cover 410 of the end cover 400 and the first limit boss; the wall of the mounting chamber at the head of the handle 20 is provided with a second limit boss along the radial extension of the pushing member 200, the outer wall of the rotary drum 100 is provided with a third limit boss along the radial extension of the outer wall, and the other third bearing 20c is arranged between the second limit boss and the third limit boss.

As shown in fig. 18, a sealing element 20d is disposed on the second limiting boss, and the sealing element 20d is used for sealing a gap between the second limiting boss and the pushing element 200, so that a foreign object in the oral cavity can be prevented from entering the mounting cavity of the handle 20, and the drilling device can be protected. The sealing element 20d may be a rubber sealing ring, and may be fixed by bonding or the like. The second limiting boss can also be provided with a dust cover 20e, and the dust cover 20e is in small clearance fit with the pushing piece 200 and the drill bit clamp 600, so that a certain dust prevention effect can be achieved, and the normal movement of the pushing piece is not influenced.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A feed mechanism, characterized in that the feed mechanism (10) comprises: a rotating drum (100), a pushing member (200) and a transmission member (300);

the pusher (200) is movably disposed within the drum (100);

the transmission member (300) is rotatably disposed in the drum (100) and engaged with the drum (100) and the pusher (200);

when the rotary drum (100) rotates, the transmission piece (300) can rotate under the driving of the rotary drum (100) to drive the pushing piece (200) to rotate, so that the first end of the pushing piece (200) is screwed out or screwed into the rotary drum (100).

2. The feed mechanism according to claim 1, characterized in that the transmission member (300) comprises a plurality of transmission tooth columns (310) distributed along the circumferential direction of the pusher member (200), the transmission tooth columns (310) being rotatable about their central axes, the transmission tooth columns (310) being engaged with the drum (100) and the pusher member (200).

3. The feeding mechanism according to claim 2, wherein the transmission gear column (310) comprises a first transmission part (311) and a second transmission part (312) which are coaxially arranged, and the diameter of the first transmission part (311) is larger than that of the second transmission part (312);

the first transmission part (311) is engaged with the pushing member (200), and the second transmission part (312) is engaged with the drum (100); and/or the first transmission part (311) is engaged with the drum (100) and the second transmission part (312) is engaged with the pushing member (200).

4. The feed mechanism according to claim 3, wherein the drum (100) has an avoiding groove (100a) on an inner wall thereof, the first transmission portion (311) corresponds to the avoiding groove (100a) and engages with the pushing member (200), and the second transmission portion (312) engages with the drum (100).

5. The feeding mechanism according to claim 4, wherein the number of the first transmission portions (311) is at least 1, the number of the second transmission portions (312) is at least 2, the first transmission portions (311) and the second transmission portions (312) are alternately distributed along the axial direction of the transmission tooth column (310), and the second transmission portions (312) are arranged at two axial ends of the transmission tooth column (310).

6. The feeding mechanism according to claim 2, wherein the transmission member (300) further comprises a first planet carrier (320) disposed within the drum (100);

the first planet carrier (320) is provided with a plurality of limiting holes (320a), the end part of the transmission toothed column (310) close to the first planet carrier (320) is provided with a limiting column (313), the limiting column (313) extends into the corresponding limiting hole (320a), and/or the first planet carrier (320) is provided with a plurality of limiting columns, the end part of the transmission toothed column (310) close to the first planet carrier (320) is provided with a limiting groove, and the limiting column extends into the corresponding limiting groove.

7. The feed mechanism according to any of claims 1 to 6, wherein the feed mechanism (10) further comprises an end cap (400), the end cap (400) being adapted to press the transmission member (300) into the drum (100).

8. The feed mechanism according to claim 7, wherein the feed mechanism (10) further comprises an elastic member (500), the elastic member (500) being disposed between the transmission member (300) and the end cap (400) and being configured to apply an axial pretension to the transmission member (300).

9. The feeding mechanism according to claim 8, wherein the elastic member (500) comprises a butterfly washer (510), the butterfly washer (510) is sleeved on the pushing member (200), and two end faces of the butterfly washer (510) are respectively abutted against the transmission member (300) and the end cap (400).

10. The feeding mechanism according to claim 9, wherein the elastic member (500) further comprises a flat washer (520), the flat washer (520) is sleeved on the pushing member (200), and two end surfaces of the flat washer (520) are respectively abutted against the end cover (400) and the butterfly washer (510).

11. The feeding mechanism according to claim 7, wherein the end cap (400) comprises a top cover (410) and a pressing portion (420) connected to the top cover (410) and inserted into the drum (100);

the pushing piece (200) is provided with a second end far away from the first end, and the outer wall of the second end is provided with a friction part (210), and the friction part (210) can slide on the inner wall of the pressing part (420) along the axial direction of the pushing piece (200).

12. The feed mechanism according to claim 11, wherein the friction portion (210) is located at a port of the pressing portion (420) when the first end of the pusher (200) is unscrewed to an extreme position.

13. The feed mechanism according to any of claims 1-6, wherein the pusher member (200) has a second end remote from the first end, and the second end is provided with a first stop (220), the first stop (220) being adapted to abut the driver member (300) when the first end of the pusher member (200) is unscrewed to stop the unscrewing of the pusher member (200).

14. The feed mechanism according to claim 13, wherein a first stopper (230) is provided on an end surface of the first stopper (220) adjacent to the transmission member (300), the first stopper (230) being capable of abutting against the transmission member (300) when the pushing member (200) is rotated out to the limit position.

15. The feed mechanism according to any of claims 1 to 6, wherein the outer wall of the drum (100) is provided with conical teeth (110) along its circumference.

16. The feed mechanism of any of claims 1-6, wherein the first end of the pusher (200) is provided with a mounting location thereon;

the feeding mechanism (10) further comprises a bit clamp (600), and the bit clamp (600) is arranged on the mounting position of the pushing piece (200);

the drill bit clamp is characterized in that a magnetic part (610) is arranged in the drill bit clamp (600), an installation interface (600a) is arranged on the end face, far away from the pushing part (200), of the drill bit clamp (600), the installation interface (600a) corresponds to the magnetic part (610), and the installation interface (600a) is of a non-circular hole structure.

17. The feed mechanism of claim 16, wherein a second stop (620) is provided on the end of the bit holder (600) remote from the pusher (200), the second stop (620) being adapted to stop movement of the first end of the pusher (200) when it is screwed into an extreme position.

18. The feed mechanism as claimed in claim 17, wherein a second anti-collision member (630) is provided on an end surface of the second stopper portion (620) adjacent to the transmission member (300).

19. A punch device, comprising: a handle (20) and the feed mechanism (10) of any of claims 1-18;

the head of the handle (20) is provided with a mounting cavity, the rotary drum (100) of the feeding mechanism (10) is rotatably arranged in the mounting cavity, and the first end of the transmission piece (300) of the feeding mechanism can be screwed out of or into the mounting cavity.

20. The punch device as recited in claim 19, further comprising a drive member (80) disposed within the handle (20) and a shaft (30);

the driving piece (80) can drive the rotary drum (100) to rotate through a rotary shaft (30), and an included angle which is larger than 0 degree and smaller than 180 degrees is formed between the central axis of the rotary shaft (30) and the central axis of the pushing piece (200).

21. Perforating device as claimed in claim 20, characterized in that said shafts (30) comprise a first shaft (30a) and a second shaft (30b), said first shaft (30a) and said second shaft (30b) having an angle therebetween greater than 0 ° and less than 180 °;

the perforating device further comprises a speed reducer (40), the first rotating shaft (30a) is arranged between the rotary drum (100) and the speed reducer (40), and the second rotating shaft (30b) is arranged between the speed reducer (40) and the driving piece (80).

22. Perforating device as claimed in claim 21, characterized in that a first transmission gear (30a1) is provided on the first rotary shaft (30a) and a second transmission gear is provided on the second rotary shaft (30b), said reducer (40) comprising: a gear housing (40a), a second carrier (40b), and a plurality of reduction gears (40 c);

tooth shell (40a) set up in handle (20) and be provided with the driving tooth on the inner wall, second planet carrier (40b) are located in tooth shell (40a) and with first driving gear (30a1) meshing, reduction gear (40c) set up in on second planet carrier (40b), reduction gear (40c) around in around second pivot (30b) and with second driving gear the driving tooth meshing.

23. Perforating device according to claim 20, characterized in that the rotary shaft (30) is provided with a first bearing (30c) and a second bearing (30d) in sequence in its own axial direction, the first bearing (30c) being positioned axially by means of a first snap ring (30e), the second bearing (30d) being movable in the axial direction of the rotary shaft (30).

24. The perforating device as recited in claim 20, characterized in that it further comprises a position sensor (50) arranged between the rotary shaft (30) and an inner wall of the handle (20), the position sensor (50) being configured to acquire and send an amount of rotation or an amount of precession of the first end of the pusher (200) of the feed mechanism.

25. Perforating device according to any of claims 19-24, characterized in that a spray head (60) is arranged on the outer wall of the head of the handle (20).

26. Perforating device according to any of claims 19-24, characterized in that the outer wall of the handle (20) is provided with a non-slip portion (20b), which non-slip portion (20b) is a raised or recessed structure.