CN210990568U - Grinding handle power transmission mechanism with adjustable swing angle and grinding tool - Google Patents
Grinding handle power transmission mechanism with adjustable swing angle and grinding tool Download PDFInfo
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- CN210990568U CN210990568U CN201921647951.2U CN201921647951U CN210990568U CN 210990568 U CN210990568 U CN 210990568U CN 201921647951 U CN201921647951 U CN 201921647951U CN 210990568 U CN210990568 U CN 210990568U
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Abstract
The utility model provides a swing angle adjustable grinding handle power transmission mechanism and grinding tool, including input shaft and the output shaft that sets up in the casing, be provided with the intermediate drive spare that is used for transmitting power between input shaft and the output shaft, the eccentric driving medium that is provided with on the input shaft, the intermediate drive spare has the input part that cooperates with the eccentric driving medium of input shaft and the output part that cooperates with the output shaft, eccentric driving medium and input part convert the unidirectional rotation motion of input shaft into the reciprocating oscillation of intermediate drive spare, the output part drives the output shaft reciprocating oscillation; the shell is also provided with an adjusting structure for adjusting and adjusting the relative distance between one of the intermediate transmission member, the input shaft and the output shaft and the other two of the intermediate transmission member, the input shaft and the output shaft. The utility model converts the continuous unidirectional circular rotation motion into the reciprocating swing within a certain angle range in the circumferential direction, thereby preventing the cutter head from winding soft tissues; and the adjustment of the swing angle can be realized, and the requirements of different swing amplitudes are met.
Description
Technical Field
The utility model belongs to the technical field of medical instrument, concretely relates to pivot angle adjustable grinding handle power transmission mechanism and grinding cutter.
Background
In surgical operation, a medical grinding tool is generally used for grinding bone tissues or soft tissues in a human body, and the conventional grinding tool generally adopts a power handle to drive a grinding head/tool bit to rotate at a high speed for grinding. Because the grinding head/the cutter head do 360-degree circular rotation motion, the hidden trouble of winding the surrounding soft tissues exists in the operation process, and the soft tissues can be twisted off once being wound under the condition of high-speed rotation; particularly, the damage degree to soft tissues such as blood vessels, nerves and the like is higher, and the damage to patients caused by the fact that the cutting edge of the grinding head/the cutter head winds the nerves is very large.
Although grinding tools capable of oscillating back and forth are available, the angular range of oscillation is not adjustable, and thus the adaptability is poor.
SUMMERY OF THE UTILITY MODEL
In view of the above prior art not enough, the utility model aims to provide a swing angle adjustable grinding handle power transmission changes circular motion into reciprocating swing, prevents the tool bit winding soft tissue, and can adjust wobbling angle.
In order to achieve the above objects and other related objects, the technical solution of the present invention is as follows:
a grinding handle power transmission mechanism with an adjustable swing angle is used for transmitting power of a power handle to a cutter head and comprises an input shaft and an output shaft, wherein the input shaft is arranged in a shell and used for connecting the power, the output shaft is used for being connected with the cutter head, an intermediate transmission member used for transmitting the power is arranged between the input shaft and the output shaft, an eccentric transmission member is eccentrically arranged on the input shaft, the intermediate transmission member is provided with an input part matched with the eccentric transmission member of the input shaft and an output part matched with the output shaft, the eccentric transmission member and the input part convert the unidirectional rotation motion of the input shaft into the reciprocating swing of the intermediate transmission member, and the output part transmits the power which swings back and forth to the output shaft to drive the output shaft to; the shell is further provided with an adjusting structure, the adjusting structure is used for driving the middle transmission piece, the input shaft or the output shaft to deviate in the direction perpendicular to the axis of the input shaft, and the relative distance between one of the middle transmission piece, the input shaft and the output shaft and the other two of the middle transmission piece, the input shaft and the output shaft is adjusted.
By adopting the structure, the circular rotation mode of the traditional tool bit is changed, continuous unidirectional circular rotation motion is converted into reciprocating swing within a certain angle range in the circumferential direction, and after the tool bit is connected with the power output shaft, the tool bit reciprocates in the circumferential direction of the power output shaft around the central line of the power output shaft, so that the tool bit is prevented from winding soft tissues; and the soft tissue has certain elasticity, so that the cutter head can be avoided when the cutter head does reciprocating swing, and the damage to the soft tissue is reduced. In addition, because the intermediate transmission member is arranged between the input shaft and the output shaft, the offset distance between the input shaft and the intermediate transmission member and/or between the output shaft and the intermediate transmission member can be changed by adjusting the input shaft, the output shaft or the intermediate transmission member, so that the swing amplitude in the transmission process is changed, the adjustment of the swing angle is realized, and the requirements of different swing amplitudes are met.
Alternatively, adjusting the relative distance between one of the intermediate transmission, the input shaft and the output shaft and the other two may be performed in one of the following ways: adjusting the offset distance of the pivot center of the intermediate transmission member relative to the axis of the input shaft and the axis of the output shaft, adjusting the offset distance of the axis of the input shaft relative to the pivot center of the intermediate transmission member, adjusting the offset distance of the eccentric transmission member relative to the pivot center of the intermediate transmission member, adjusting the offset distance of the pivot center of the intermediate transmission member relative to the axis of the output shaft, adjusting the offset distance of the axis of the output shaft relative to the pivot center of the intermediate transmission member, or adjusting the offset distance of the output part relative to the axis of the output shaft.
Optionally, the input shaft is installed in the housing through a first bearing, the eccentric transmission member is a first transmission shaft eccentrically arranged at an output end of the input shaft, and the first transmission shaft is sleeved with a second bearing.
Optionally, the intermediate transmission member comprises an intermediate shaft, the input part is a pair of first lugs arranged at an input end of the intermediate shaft, and the second bearing is located between the two first lugs and is tangent to the second lug.
Optionally, the output part is a second transmission shaft arranged at the output end of the intermediate shaft, the second transmission shaft is eccentrically arranged relative to the intermediate shaft, and a third bearing is sleeved on the second transmission shaft.
Optionally, the input end of the output shaft is provided with two second ear plates oppositely, and the third bearing is located between the two second ear plates and tangent to the second ear plates.
Optionally, the input shaft coincides with an axis of the output shaft, or the input end of the input shaft is connected with a power input shaft through a speed reduction mechanism, the input shaft is mounted on the housing through an eccentric bearing seat, the output shaft coincides with an axis of the power input shaft, and the axis of the input shaft is offset relative to the axis of the output shaft.
Optionally, the adjusting structure comprises a supporting seat for mounting the intermediate transmission member and an adjusting member for moving the supporting seat in a direction perpendicular to the axis of the input shaft, the intermediate transmission member is rotatably mounted on the supporting seat, the rotation center line of the intermediate transmission member is parallel to the axis of the input shaft, and when the adjusting member is operated, the supporting seat drives the intermediate transmission member to shift relative to the input shaft and/or the output shaft.
Alternatively, the support base is an adjusting shaft mounted on the housing perpendicularly to the input shaft, one end of the adjusting shaft has an external thread, the adjusting member is a nut rotatably provided on the housing along its own axis, the nut is fitted over a threaded section of the adjusting shaft, and the housing restricts the movement of the nut in the axial direction of the adjusting shaft.
Optionally, a limiting structure for limiting the rotation of the supporting seat is arranged on the shell.
Optionally, an installation groove is formed in the inner wall of the shell, the first end of the adjusting shaft is matched with the adjusting part, the second end of the adjusting shaft extends into the installation groove, an elastic element is arranged in the installation groove, and the elastic element abuts against the second end of the adjusting shaft.
Optionally, a window for installing the supporting seat is formed in the shell, a cover plate with a through hole is installed on the window, and the nut is installed in the through hole of the cover plate and extends out of the cover plate.
The utility model also provides a grinding cutter, include pivot angle adjustable grinding handle power transmission mechanism.
As mentioned above, the utility model has the advantages that: the utility model changes the circular rotation motion mode of the traditional tool bit, converts the continuous rotation motion into the circular reciprocating swing within a certain angle range, and after the tool bit is connected with the power output shaft, the tool bit reciprocates along the circumference around the central line of the power output shaft, thereby avoiding the tool bit from winding soft tissues; and the soft tissue has certain elasticity, so that the cutter head can be avoided when the cutter head does reciprocating swing, and the damage to the soft tissue is reduced.
In addition, because the intermediate transmission member is arranged between the input shaft and the output shaft, the position of the input shaft, the output shaft or the intermediate transmission member in the direction perpendicular to the axis of the handle can be adjusted through the adjusting structure, the relative offset between the input shaft and the intermediate transmission member or between the output shaft and the intermediate transmission member is changed, the swing amplitude in the transmission process is changed, the adjustment of a swing angle is realized, and the requirements of different swing amplitudes are met.
Drawings
Fig. 1 is a schematic view illustrating an installation of a power transmission mechanism on a handle case according to an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1;
fig. 3 is a schematic view of a transmission structure of a power transmission mechanism according to an embodiment of the present invention;
fig. 4 and 5 are exploded views of a power transmission mechanism according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an intermediate transmission member according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of an output shaft in an embodiment of the present invention;
FIG. 8 is a schematic structural view of a support base according to an embodiment of the present invention;
FIG. 9 is a schematic view of the structure of the cover plate in the embodiment of the present invention
Fig. 10 is a schematic view of another embodiment of a power transmission mechanism according to an embodiment of the present invention.
Part number description:
100-a housing; 101-mounting grooves; 200-an input shaft; 201-a first drive shaft; 202-a second bearing; 203-a bearing seat; 204-a first bearing; 300-intermediate shaft; 301-a first ear plate; 302-a second drive shaft; 303-a third bearing; 304-a fifth bearing; 400-an output shaft; 401-a second ear plate; 402-a fourth bearing; 500-a drive pawl; 600-a support seat; 601-a thread section; 602-a nut; 603-a resilient element; 604-a via; 605-rotation limiting block; 606-a knob; 700-a power take-in shaft; 800-a speed reduction mechanism; 900-cover plate; 901-a limit groove; 902-limit step.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
In this case, the front-back direction is a direction toward the patient when the grinding tool is in operation, and a direction away from the patient is a direction away from the patient.
Examples
As shown in fig. 1 to 5, a swing angle adjustable grinding handle power transmission mechanism, wherein, the grinding cutter includes parts such as power handle, the tool bit that is used for the grinding, the utility model discloses a power transmission mechanism is used for transmitting power of power handle to the tool bit, and this power transmission mechanism is connected with power handle's driving motor is direct or indirect.
The power transmission mechanism comprises an input shaft 200 and an output shaft 400 which are arranged in the shell 100, wherein the input shaft 200 is used for connecting power (such as rotary power directly or indirectly transmitted by a motor), and the output shaft 400 is used for connecting with the cutter head and transmitting reciprocating swing to the cutter head; the key point is that an intermediate transmission member for transmitting power is arranged between the input shaft 200 and the output shaft 400, an eccentric transmission member is eccentrically arranged on the input shaft 200, the eccentric transmission member is eccentrically arranged relative to the axis of the input shaft 200, the intermediate transmission member is provided with an input part matched with the eccentric transmission member of the input shaft 200, when the transmission mechanism works, the input shaft 200 performs unidirectional continuous rotating motion, and the matching structure of the eccentric transmission member and the input part converts the unidirectional rotating motion of the input shaft 200 into reciprocating swing of the intermediate transmission member. The intermediate transmission member further has an output portion engaged with the output shaft 400, and the output portion reciprocates along with the intermediate transmission member to transmit power of the reciprocating swing to the output shaft 400, thereby driving the output shaft 400 to reciprocate.
The axis of the input shaft 200 is parallel to or coincident with the axis of the output shaft 400, and the swing center line of the intermediate transmission member is parallel to the axes of the input shaft 200 and the output shaft 400.
Wherein, the casing 100 is further provided with an adjusting structure, and the adjusting structure is used for driving the intermediate transmission member, the input shaft 200 or the output shaft 400 to deviate in a direction perpendicular to the axis of the input shaft 200, that is, to deviate in the radial direction of the input shaft 200 or the output shaft 400, so as to adjust the relative distance between one of the intermediate transmission member, the input shaft 200 and the output shaft 400 and the other two; the influence on the swing amplitude mainly comprises two transmission links: transmission between the input shaft 200 and the intermediate connection member, transmission between the intermediate connection member and the output shaft 400; therefore, the relative distance between the intermediate transmission and the input shaft 200 (relative distance in the direction perpendicular to the axial direction of the input shaft 200) and/or the relative distance between the intermediate transmission and the output shaft 400 (relative distance in the direction perpendicular to the axial direction of the input shaft 200) is mainly adjusted.
By adopting the structure, the circular rotation mode of the traditional tool bit is changed, continuous unidirectional circular rotation motion is converted into reciprocating swing within a certain angle range in the circumferential direction, and after the tool bit is connected with the power output shaft 400, the tool bit reciprocates in the circumferential direction of the power output shaft 400 around the central line of the power output shaft 400, so that the tool bit is prevented from winding soft tissues; and the soft tissue has certain elasticity, so that the cutter head can be avoided when the cutter head does reciprocating swing, and the damage to the soft tissue is reduced. In addition, because an intermediate transmission member is arranged between the input shaft 200 and the output shaft 400, and the offset distance between the input shaft 200 and the intermediate transmission member and/or between the output shaft 400 and the intermediate transmission member can be changed by adjusting the input shaft 200, the output shaft 400 or the intermediate transmission member through an adjusting structure, so that the swing amplitude in the transmission process is changed, the adjustment of the swing angle is realized, and the requirements of different swing amplitudes are met.
Wherein adjusting the relative distance between the intermediate transmission and the input shaft 200 may be performed in one or more of the following ways:
the input shaft 200 and the output shaft 400 are stationary, with the intermediate transmission offset parallel to the input shaft 200; that is, the amount of offset of the swing center of the intermediate transmission with respect to the axis of the input shaft 200 and the axis of the output shaft 400 is changed; alternatively, the intermediate transmission is stationary and the output shaft 400 is stationary, causing the input shaft 200 to deflect relative to the intermediate transmission; changing the offset of the axis of the input shaft 200 with respect to the center of oscillation of the intermediate transmission, of course while changing the relative distance between the input shaft 200 and the output shaft 400; alternatively, both the intermediate transmission member and the input shaft 200 are stationary, and the offset of the eccentric transmission member with respect to the center of oscillation of the intermediate transmission member is adjusted, that is, the position of the eccentric transmission member in the radial direction of the input shaft 200 is adjusted. Thereby, the change of the swing angle between the input shaft 200 and the intermediate transmission member is realized, and the swing angle of the output shaft 400 is indirectly changed.
The relative distance between the intermediate transmission and the output shaft 400 can be adjusted in one or more of the following ways: the input shaft 200 and the output shaft 400 are fixed, so that the intermediate transmission member is deviated relative to the output shaft 400, and the deviation amount of the swing center of the intermediate transmission member relative to the axis of the output shaft 400 is adjusted; alternatively, the intermediate transmission member is stationary and the input shaft 200 is stationary, so that the output shaft 400 is offset with respect to the intermediate transmission member, i.e., the offset of the axis of the output shaft 400 with respect to the center of oscillation of the intermediate transmission member is adjusted; or both the intermediate transmission member and the output shaft 400 are stationary, the offset of the center of the output portion with respect to the axis of the output shaft 400 is adjusted, i.e., the position of the output portion in the radial direction of the intermediate transmission member is changed.
In this embodiment, the description is made by changing the swing center line of the intermediate transmission member, and the other modes and principles are the same:
as shown in fig. 2 to 7, specifically, the input shaft 200 is mounted in the housing 100 through the first bearing 204 and the bearing housing 203, and the axial position is limited by a collar or the like; the eccentric transmission is a first transmission shaft 201 arranged on the end face of the output end of the input shaft 200, the first transmission shaft 201 is parallel to the input shaft 200, the axis of the first transmission shaft 201 is offset relative to the axis of the input shaft 200, and a second bearing 202 is sleeved on the first transmission shaft 201.
Middle driving medium includes jackshaft 300, and the input of jackshaft 300 sets up input part, the output sets up output part, wherein, input part is for setting up a pair of first otic placode 301 at the input of jackshaft 300 (or set up radial logical groove at jackshaft 300 input terminal surface, the both sides wall that leads to the groove and the contact of second bearing 202 outer lane), and two first otic placodes 301 are just to setting up, and second bearing 202 is located between two first otic placodes 301 to when first transmission shaft 201 is rotatory with first otic placode 301 contact, drive jackshaft 300 reciprocating swing through first otic placode 301. The second bearing 202 causes less friction and impact when relative motion is generated between the first transmission shaft 201 and the first lug plate 301.
The output part is a second transmission shaft 302 arranged on the end face of the output end of the intermediate shaft 300, the second transmission shaft 302 is parallel to the intermediate shaft 300, the second transmission shaft 302 is eccentrically arranged relative to the intermediate shaft 300, and a third bearing 303 is sleeved on the second transmission shaft 302.
The output shaft 400 is installed in the casing 100 through a fourth bearing 402, two second lug plates 401 are arranged at the input end of the output shaft 400 relatively (or a radial through groove is formed in the end face of the input end of the output shaft 400, and two side walls of the through groove are in contact with the outer ring of the third bearing 303), the third bearing 303 is located between the two second lug plates 401 and is in contact with at least one second lug plate 401, and the third bearing 303 is generally in contact with the two lug plates to reduce impact, so that the output shaft 400 is driven to swing through the third bearing 303 and the second lug plates 401 when the second transmission shaft 302 swings.
In this example, in order to realize the speed reduction of the input end, the input end of the input shaft 200 is further provided with a speed reduction mechanism 800 and a power access shaft 700, wherein the power access shaft 700 is directly or indirectly connected with the output end of the motor, and the axis of the power access shaft 700 is overlapped with the axis of the output shaft 400; the bearing housing 203 is of an eccentric configuration, and when the input shaft 200 is mounted on the bearing housing 203, the axis of the input shaft 200 is offset relative to the power input shaft 700, and the reduction mechanism 800 is a meshing gear set, one of which is connected to the power input shaft 700 and the other of which is fixed to the input shaft 200, in this example, a meshing gear set, as shown in fig. 1 and 2.
In another embodiment, the input shaft 200 coincides with the axis of the output shaft 400, without the reduction mechanism 800 and the power input shaft 700, as shown in fig. 10.
To facilitate the docking with the bit, the output end of the output shaft 400 is connected to a synchronously oscillating drive dog 500.
As shown in fig. 2, 8 and 9, the adjusting structure includes a supporting seat 600 for mounting an intermediate transmission member and an adjusting component for moving the supporting seat 600 along a direction perpendicular to the axis of the input shaft 200, the intermediate transmission member is rotatably mounted on the supporting seat 600 along its own axis, the rotation center line of the intermediate transmission member is parallel to the axis of the input shaft 200, in this case, a through hole 604 is formed in the supporting seat 600 along the axis of the input shaft 200, the intermediate transmission member is of a cylindrical structure (i.e., the intermediate shaft 300), and the intermediate shaft 300 is mounted in the through hole 604 through a fifth bearing 304 and is axially limited; when the adjusting component is operated, the supporting seat 600 drives the intermediate transmission member to shift relative to the input shaft 200 and the output shaft 400, so as to change the position relationship between the first transmission shaft 201 and the first ear plate 301, and between the second transmission shaft 302 and the second ear plate 401 of the output shaft 400, thereby achieving the purpose of changing the swing angle.
The supporting seat 600 and the adjusting component can be adjusted by using a screw thread or a latch, for example, a screw nut, a rack and pinion, a worm gear, etc., or by pulling out the supporting seat 600 and locking the supporting seat by using a bolt and a hole. This example is illustrated in the form of a spindle nut.
Referring to fig. 2, the supporting base 600 is an adjusting shaft vertically mounted on the housing 100 relative to the input shaft 200, the upper end of the adjusting shaft is shown to have a threaded section 601, the adjusting shaft can move up and down (in the orientation shown in the figure) in the housing 100, the adjusting member is a nut 602 rotatably disposed on the housing 100 along its own axis, the nut 602 is sleeved on the threaded section 601 of the adjusting shaft, the housing 100 limits the up and down movement of the nut 602, and when the nut 602 is screwed, the nut 602 only rotates and does not move up and down, so that the adjusting shaft can move up and down, and the position of the intermediate shaft 300 can be adjusted. To facilitate screwing, a knob 606 is fixedly mounted on the nut 602.
In order to prevent the adjusting shaft from rotating along its axis when the nut 602 rotates, a limiting structure for limiting the rotation of the adjusting shaft is disposed on the housing 100. Specifically, a flat groove may be provided on the housing 100, a flat block may be provided on the adjusting shaft to fit the groove to prevent the adjusting shaft from rotating, in this example, a non-circular rotation limiting block 605 is provided on the adjusting shaft, and a corresponding limiting groove 901 is provided on the housing 100.
Specifically, a window (top of the casing 100 in fig. 2) for installing the supporting seat 600 is formed in the casing 100, a cover plate 900 is fixedly and hermetically installed on the window, a through hole is formed in the middle of the cover plate 900, a nut 602 is installed in the through hole of the cover plate 900, the top of the cover plate 900 extends out of the cover plate 900, in this example, a limiting groove 901 is formed in the inner side of the cover plate 900, and a rotation limiting block 605 extends into the limiting groove 901; the outer end of the through hole of the cover plate 900 is provided with a limiting step 902, the nut 602 is installed into the through hole from the inner side of the cover plate 900, and the boss on the outer wall of the nut 602 abuts against the limiting step 902 to prevent the nut 602 from sliding out of the cover plate 900, so that axial limiting is achieved. Sealing rings are respectively arranged between the nut 602 and the cover plate 900 and between the cover plate 900 and the casing 100.
In one embodiment, to prevent the adjustment shaft from wobbling at the end (lower end in FIG. 2) away from the nut 602 after adjustment; an installation groove 101 is formed in the inner wall of the bottom of the shell 100, a first end (upper end in fig. 2) of the adjusting shaft is matched with the nut 602, a second end (lower end) of the adjusting shaft extends into the installation groove 101, an elastic element 603 is arranged in the installation groove 101, and the elastic element 603 abuts against the second end of the adjusting shaft, so that the adjusting shaft is prevented from abutting at any adjusting position and swinging; in this embodiment, a hole is formed in the second end surface of the adjusting shaft, one end of the elastic element 603 extends into the hole, and the other end of the elastic element 603 abuts against the bottom of the mounting groove 101, and the elastic element 603 can be a spring.
In this example, the cover plate 900 further limits the stroke of the adjustment shaft for lifting adjustment; in another embodiment, the mounting groove 101 and the second end of the adjusting shaft may be designed to limit the rotation of the adjusting shaft.
On this basis, the utility model also provides a grinding cutter, including any one of the above-mentioned embodiments grinding handle power transmission mechanism of pivot angle adjustable, the tool bit is connected to this power transmission mechanism's output, and the motor is connected to the input.
The utility model changes the circular rotation motion mode of the traditional tool bit, converts the continuous rotation motion into the circular reciprocating swing within a certain angle range, and after the tool bit is connected with the power output shaft 400, the tool bit reciprocates along the circumference around the central line of the power output shaft 400, thereby avoiding the tool bit from winding soft tissues; and the soft tissue has certain elasticity, so that the cutter head can be avoided when the cutter head does reciprocating swing, and the damage to the soft tissue is reduced.
In addition, because the intermediate transmission member is arranged between the input shaft 200 and the output shaft 400, the positions of the input shaft 200, the output shaft 400 or the intermediate transmission member in the direction perpendicular to the axis of the handle can be adjusted through the adjusting structure, the relative offset between the input shaft 200 and the intermediate transmission member or between the output shaft 400 and the intermediate transmission member is changed, the swing amplitude in the transmission process is changed, the adjustment of the swing angle is realized, the requirements of different swing amplitudes are met, and the operation is convenient.
Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (13)
1. The utility model provides a pivot angle adjustable grinding handle power transmission for transmit the power of power handle to the tool bit, its characterized in that: the tool comprises an input shaft and an output shaft, wherein the input shaft is arranged in a shell and used for connecting power, the output shaft is used for connecting a tool bit, an intermediate transmission part used for transmitting power is arranged between the input shaft and the output shaft, an eccentric transmission part is eccentrically arranged on the input shaft, the intermediate transmission part is provided with an input part matched with the eccentric transmission part of the input shaft and an output part matched with the output shaft, the eccentric transmission part and the input part convert the unidirectional rotation motion of the input shaft into the reciprocating swing of the intermediate transmission part, and the output part transmits the power which swings back and forth to the output shaft to drive the output shaft to swing back and forth; the shell is further provided with an adjusting structure, the adjusting structure is used for driving the middle transmission piece, the input shaft or the output shaft to deviate in the direction perpendicular to the axis of the input shaft, and the relative distance between one of the middle transmission piece, the input shaft and the output shaft and the other two of the middle transmission piece, the input shaft and the output shaft is adjusted.
2. The swing angle adjustable grinding handle power transmission mechanism as claimed in claim 1, wherein: adjusting the relative distance between one of the intermediate transmission member, the input shaft, and the output shaft and the other two of them comprises: adjusting the offset distance of the pivot center of the intermediate transmission member relative to the axis of the input shaft and the axis of the output shaft, adjusting the offset distance of the axis of the input shaft relative to the pivot center of the intermediate transmission member, or adjusting the offset distance of the eccentric transmission member relative to the pivot center of the intermediate transmission member, adjusting the offset distance of the axis of the output shaft relative to the pivot center of the intermediate transmission member, or adjusting the offset distance of the output part relative to the axis of the output shaft.
3. The swing angle adjustable grinding handle power transmission mechanism as claimed in claim 1, wherein: the input shaft is installed in the shell through a first bearing, the eccentric transmission part is a first transmission shaft eccentrically arranged at the output end of the input shaft, and a second bearing is sleeved on the first transmission shaft.
4. The swing angle adjustable grinding handle power transmission mechanism of claim 3, wherein: the middle transmission part comprises an intermediate shaft, the input part is a pair of first lug plates arranged at the input end of the intermediate shaft, and the second bearing is positioned between the two first lug plates and is tangent to the first lug plates.
5. The swing angle adjustable grinding handle power transmission mechanism of claim 4, wherein: the output part is a second transmission shaft arranged at the output end of the intermediate shaft, the second transmission shaft is eccentrically arranged relative to the intermediate shaft, and a third bearing is sleeved on the second transmission shaft.
6. The swing angle adjustable grinding handle power transmission mechanism of claim 5, wherein: the input of output shaft is provided with two second otic placodes relatively, the third bearing is located between two second otic placodes, and with the second otic placode is tangent.
7. The swing angle adjustable grinding handle power transmission mechanism as claimed in claim 1, wherein: the axial lines of the input shaft and the output shaft are overlapped, or the input end of the input shaft is connected with a power access shaft through a speed reducing mechanism, the input shaft is installed on the shell through an eccentric bearing seat, the axial lines of the output shaft and the power access shaft are overlapped, and the axial line of the input shaft is offset relative to the axial line of the output shaft.
8. The swing angle adjustable grinding handle power transmission mechanism as claimed in any one of claims 1 to 7, wherein: the adjusting structure comprises a supporting seat for mounting the intermediate transmission member and an adjusting part for enabling the supporting seat to move along the direction perpendicular to the axis of the input shaft, the intermediate transmission member is rotatably mounted on the supporting seat, the rotating center line of the intermediate transmission member is parallel to the axis of the input shaft, and when the adjusting part is operated, the supporting seat drives the intermediate transmission member to deviate relative to the input shaft and the output shaft.
9. The swing angle adjustable grinding handle power transmission mechanism of claim 8, wherein: the support seat is an adjusting shaft which is vertically installed on the shell relative to the input shaft, an external thread is arranged at one end of the adjusting shaft, the adjusting component is a nut which is rotatably arranged on the shell along the axis of the adjusting component, the nut is sleeved on the threaded section of the adjusting shaft, and the shell limits the movement of the nut in the axial direction of the adjusting shaft.
10. The swing angle adjustable grinding handle power transmission mechanism of claim 8, wherein: and the shell is provided with a limiting structure for limiting the rotation of the supporting seat.
11. The swing angle adjustable grinding handle power transmission mechanism of claim 9, wherein: the mounting groove has been seted up on the shells inner wall, the first end and the adjusting part cooperation of regulating spindle, the second end of regulating spindle stretches into in the mounting groove, be provided with elastic element in the mounting groove, elastic element supports the second end at the regulating spindle.
12. The swing angle adjustable grinding handle power transmission mechanism of claim 11, wherein: the supporting seat is characterized in that a window used for installing the supporting seat is formed in the shell, a cover plate with a through hole is installed on the window, and the nut is installed in the through hole of the cover plate and extends out of the cover plate.
13. A grinding tool characterized by: comprising the swing angle adjustable grinding handle power transmission mechanism of any one of claims 1-12.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921647951.2U CN210990568U (en) | 2019-09-29 | 2019-09-29 | Grinding handle power transmission mechanism with adjustable swing angle and grinding tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921647951.2U CN210990568U (en) | 2019-09-29 | 2019-09-29 | Grinding handle power transmission mechanism with adjustable swing angle and grinding tool |
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| CN210990568U true CN210990568U (en) | 2020-07-14 |
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| CN201921647951.2U Active CN210990568U (en) | 2019-09-29 | 2019-09-29 | Grinding handle power transmission mechanism with adjustable swing angle and grinding tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547845A (en) * | 2019-09-29 | 2019-12-10 | 重庆西山科技股份有限公司 | Grinding handle power transmission mechanism with adjustable swing angle and grinding tool |
| CN110547845B (en) * | 2019-09-29 | 2024-05-10 | 重庆西山科技股份有限公司 | Grinding handle power transmission mechanism with adjustable swing angle and grinding tool |
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2019
- 2019-09-29 CN CN201921647951.2U patent/CN210990568U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547845A (en) * | 2019-09-29 | 2019-12-10 | 重庆西山科技股份有限公司 | Grinding handle power transmission mechanism with adjustable swing angle and grinding tool |
| CN110547845B (en) * | 2019-09-29 | 2024-05-10 | 重庆西山科技股份有限公司 | Grinding handle power transmission mechanism with adjustable swing angle and grinding tool |
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