CN209136941U - A kind of clamping device of rotation axis - Google Patents
A kind of clamping device of rotation axis Download PDFInfo
- Publication number
- CN209136941U CN209136941U CN201820299243.3U CN201820299243U CN209136941U CN 209136941 U CN209136941 U CN 209136941U CN 201820299243 U CN201820299243 U CN 201820299243U CN 209136941 U CN209136941 U CN 209136941U
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- CN
- China
- Prior art keywords
- rotation axis
- transmission shaft
- needle roller
- slot position
- clamping device
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Abstract
The utility model provides a kind of clamping device of rotation axis, it is characterised in that: it includes transmission shaft, rotation axis and rotating electric machine, and described transmission shaft one end is connect with rotating electric machine, the other end and rotation axis connection；A channel is equipped in the transmission shaft, the channel is for plugging the rotation axis；The transmission shaft is circumferential uniformly through several slot positions are equipped with, and is equipped with needle roller in the slot position；The needle roller surface is round and smooth, and the inner surface and the outer surface of the needle roller towards transmission shaft is respectively equipped with protrusion part；The interior bulge of the needle roller point is inconsistent with the rotation axis；The transmission outer shaft sleeve is equipped with spring, the outer bulge split-phase conflict of the spring and needle roller.The utility model can allow rotation axis smoothly to plug into and extract, and the rotation axis adapted in certain margin of tolerance plugs.
Description
Technical field
The utility model relates to a kind of clamping devices of rotation axis.
Background technique
With the continuous improvement of people's living standards, people increasingly focus on the hygiene and health of tooth, common tooth
Brush can not meet people for teeth caring, beautiful requirements at the higher level, therefore prophy device comes into being.Prophy device packet
It includes for clean dental scaler and the dental scaler handle being connect with dental scaler, is driven by the rotating electric machine built in dental scaler handle
The rotation axis rotation being connect with brush head in dynamic dental scaler, and then brush head is allowed to be polished directly tooth.Because its automation,
The advantages that easy to use, prophy device is selected by more and more dentists.
But the infection between different patient oral bacterias in order to prevent, requires to replace after each use of dental scaler, however
When the rotation axis of dental scaler and its gripper mechanism grips tension, the rotation axis of dental scaler is difficult to be chosen even in the process of choosing
In be broken off, be not easy to replace；When clamping pine, the rotation axis of dental scaler easily shakes, skids, or even in use
It falls off；And the clamping device of some dental scalers can only be matched with its dedicated rotation axis, poor universality.
Utility model content
For above-mentioned defect, the utility model provides a kind of clamping device of rotation axis, this clamping device, which can allow, to be turned
Moving axis is smoothly plugged into and is extracted, and the rotation axis adapted in certain margin of tolerance plugs.
It is as follows that the utility model solves used technical solution:
A kind of clamping device of rotation axis comprising transmission shaft, rotation axis and rotating electric machine, described transmission shaft one end with
Rotating electric machine connection, the other end and rotation axis connection；A channel is equipped in the transmission shaft, the channel is for plugging described turn
Moving axis；The transmission shaft is circumferential uniformly through several slot positions are equipped with, and is equipped with needle roller in the slot position；The needle roller surface is round and smooth,
The inner surface and the outer surface of the needle roller towards transmission shaft is respectively equipped with protrusion part；The interior bulge of the needle roller point with it is described
Rotation axis is inconsistent；The transmission outer shaft sleeve is equipped with spring, the outer bulge split-phase conflict of the spring and needle roller.
In one or more embodiments, the slot position is inside contracted from the appearance of transmission shaft towards the inner surface of transmission shaft.
In one or more embodiments, the slot position along transmission shaft length direction extend, the length of the needle roller with
The length of the slot position matches.
In one or more embodiments, the cross section of the rotation axis is round or equilateral polygon.
In one or more embodiments, the slot position is from the appearance of transmission shaft towards the round and smooth mistake of the inner surface of transmission shaft
It crosses, the both ends of the slot position are arc-shaped；The needle roller is cylinder, and the both ends of the needle roller are spherical surface；The needle roller is placed in
In the slot position.
In one or more embodiments, the circumscribed diameter of a circle cut with bulge split-phase in the needle roller is 2.10~
2.20mm, the diameter of the transmission shaft of the 2.30mm general less than industry, convenient for clamping the rotation axis in transmission shaft.
In one or more embodiments, one end that the transmission shaft is connect with rotating electric machine is equipped at intervals with double wedge, described
One end of rotating electric machine is equipped with can be with the strip of the mutual clasp of the double wedge.
In one or more embodiments, it is also equipped with bearing outside the transmission shaft, the bearing is used to support the biography
Moving axis is rotated.
Due to the adoption of the above technical solution, the utility model has the following beneficial effects: compared with prior art
1, being uniformly distributed due to needle roller, bulge point uniformly offsets rotation axis pressure applied in needle roller,
Rotation axis can steadily be arranged in transmission shaft wherein.
2, since the surface of needle roller is round and smooth, the both ends of needle roller are spherical surface, transmission shaft can smoothly be inserted into transmission shaft or
It is extracted from transmission shaft.
3, it is inside contracted from the appearance of transmission shaft towards the inclination of the inner surface of transmission shaft due to slot position, needle roller is played in the inside of slot position
It is acted on to carrying, so that needle roller will not fall into the inside of transmission shaft because spring inside contracts the inside thrust imposed to it, while again
Since spring has the elastic force inside contracted, needle roller will not be fallen away from slot position because of the outward thrust that rotation axis imposes it.
4, slot position inside contracts the elastic force effect that the design extended out combines spring itself, so that needle roller has certain shifting in slot position
Dynamic range, therefore the rotation axis in certain margin of tolerance is allowed to be inserted into transmission shaft.
It 5, is arc-shaped towards the inner surface rounding off of transmission shaft, slot position both ends from the appearance of transmission shaft due to slot position；
Needle roller is cylinder, needle roller both ends are spherical surface.The shape of the shape of slot position and needle roller is cooperated, so needle roller can be in
It is rotated in slot position.
Detailed description of the invention
Fig. 1 is the side view of the utility model entirety.
Fig. 2 is the perspective view of the utility model transmission shaft.
Fig. 3 is the side view of the utility model transmission shaft.
Fig. 4 is the cross-sectional view of the utility model transmission shaft.
Fig. 5 is the exploded view of the utility model transmission shaft.
Fig. 6 is the left view of the utility model transmission shaft.
Fig. 7 is office's cross-sectional view in the direction transmission shaft A-A in Fig. 3.
Specific embodiment
As follows in conjunction with attached drawing, application scheme is further described:
Referring to attached drawing 1 and 4, the utility model it include transmission shaft 1, rotation axis 2 and rotating electric machine 3, the transmission shaft 1
One end is connect with rotating electric machine 3, and the other end is connect with rotation axis 2.
Be equipped with a circular channel 5 in the transmission shaft 1, the rotation axis 2 be it is cylindric, the cylindric rotation axis 2 is inserted
Enter in the circular channel 5.
One end that the transmission shaft 1 is connect with rotating electric machine 3 is equipped at intervals with two triangle double wedge 6, the triangle double wedge 6
Arc-shaped bend, the smooth-sided compression candles transition of the triangle double wedge 6.Described 3 one end of rotating electric machine is equipped with and the triangle double wedge 6
The strip 7 of mutual clasp.
By the mutual clasp between double wedge 6 and strip 7, rotating electric machine 3 drives transmission shaft 1 to be rotated, and then drives
The rotation axis 2 being inserted in transmission shaft 1 rotates.
Referring to attached drawing 2~3 and 5~7, side that the transmission shaft 1 is connect with rotation axis 2 is circumferential uniformly there are three set
Slot position 8, the slot position 8 is inside contracted from the appearance of transmission shaft 1 towards the inner surface of transmission shaft 1, and rounding off.In the slot position 8
Be respectively equipped with needle roller 9, the needle roller 9 be it is cylindric, because the diameter of needle roller 9 is big compared with the thickness of transmission shaft 1, so needle roller 9 is distinguished
The inner surface and the outer surface towards transmission shaft 1 is protruded.Bulge point 91 is inconsistent with the rotation axis 2 in the needle roller.It is described
Spring 10 is equipped with outside transmission shaft 1, the spring 10 and the outer bulge point 92 of needle roller are inconsistent.
Because slot position 8 is uniformly distributed around transmission shaft 1, in needle roller, 91 pairs of rotation axis 2 of bulge point are inside pushes away
Power is cancelled out each other, and may make rotation axis 2 that can stablize in transmission shaft 1.
It is extended out because slot position 8 inside contracts, carrying can be played to needle roller 9 on the inside of slot position 8, needle roller 9 will not apply it because of spring 10
With the inside for inside contracting elastic force and falling into transmission shaft 1.And also due to spring 10 is equipped on the outside of transmission shaft 1, so needle roller 9 is not
It can be fallen away due to the outward thrust that rotation axis 2 imposes it from slot position 8.Slot position 8 is combined using the elastic force effect of spring 10
The design extended out is inside contracted, needle roller 9 can move in a certain range, therefore can meet the insertion of the rotation axis 2 in certain margin of tolerance.
The inner diameter size of transmission shaft 1 described in the present embodiment is 2.4mm, when not being placed with rotation axis 2, with three needle rollers
The circumscribed diameter of a circle that 9 interior bulge divides vertex tangent is 2.1mm, and can meet diameter dimension is about 2.28~2.32mm's
The insertion of rotation axis 2.
The slot position 8 extends along the length direction of transmission shaft, and the both ends of the slot position 8 are arc-shaped.The slot position 8 is embedded
There is needle roller 9 respectively, the length of the length and slot position 8 of the needle roller 9 matches.The both ends of the needle roller 9 are dome shape, the ball
Face be placed in it is described it is arc-shaped in.
It is the length direction placement of spherical surface and needle roller 9 along transmission shaft 1 since needle roller 9 is cylindrical, needle roller 9 both ends,
So rotation axis 2 can be plugged smoothly into transmission when rotation axis 2 is inserted in the circular channel 5 in transmission shaft 1 from the outside to the core
It is extracted in axis 1 or out of transmission shaft 1, without stuck phenomenon.
Since slot position 8 is circular arc towards the inner surface rounding off of transmission shaft 1,8 both ends of slot position from the appearance of transmission shaft 1
Shape；And it is spherical surface that needle roller 9, which is cylindric, 9 both ends of needle roller,.The shape of slot position 8 and the shape of needle roller 9 are cooperated, institute
It can be rotated in slot position 8 with needle roller 9.
When rotation axis 2 is locked motionless, when rotating electric machine 3 drives transmission shaft 1 to be rotated, so transmission shaft 1 can band
The dynamic needle roller 9 in slot position 8 is rotated, and then discharges the driving force of rotating electric machine 3, protects rotating electric machine 3.
When user imposes excessive pressure when the dental scaler connecting with rotation axis 2, tooth can be because being rubbed by excessive
It wipes power and is worn, and gum can feel pain because of excessive frictional force, transmission shaft 1 also will drive in slot position 8 at this time
Needle roller 9 rotated, and stop driving to rotation axis 2, discharge the driving force of rotating electric machine 3, also protect the tooth of human body
Tooth and gum.
Two bearings 11 are nested with outside the other side that the transmission shaft 1 is connect with rotating electric machine 3, the bearing 11 is used to support institute
Transmission shaft 1 is stated to be rotated.The fixing axle 12 for fixing distance between two bearings is equipped in the middle part of the two bearings 11.
It is that above-mentioned preferred embodiment should be regarded as application scheme embodiment for example, all with application scheme thunder
Same, approximate or technology deduction, replacement, improvement for making based on this etc., are regarded as the protection scope of this patent.
Claims (8)
1. a kind of clamping device of rotation axis, it is characterised in that: it includes transmission shaft, rotation axis and rotating electric machine, the biography
Moving axis one end is connect with rotating electric machine, the other end and rotation axis connection；A channel is equipped in the transmission shaft, the channel is used for
Plug the rotation axis；The transmission shaft is circumferential uniformly through several slot positions are equipped with, and is equipped with needle roller in the slot position；The needle roller
Surface is round and smooth, and the inner surface and the outer surface of the needle roller towards transmission shaft is respectively equipped with protrusion part；It protrudes the inside of the needle roller
Part is inconsistent with the rotation axis；The transmission outer shaft sleeve is equipped with spring, the outer bulge split-phase of the spring and needle roller
It contradicts.
2. the clamping device of rotation axis according to claim 1, it is characterised in that: the slot position is from the outer surface of transmission shaft
It is inside contracted to the inner surface of transmission shaft.
3. the clamping device of rotation axis according to claim 2, it is characterised in that: the slot position is along the length side of transmission shaft
To extension, the length of the needle roller and the length of the slot position match.
4. the clamping device of rotation axis according to claim 3, it is characterised in that: the cross section of the rotation axis is circle
Or equilateral polygon.
5. the clamping device of rotation axis according to claim 3, it is characterised in that: the slot position is from the outer surface of transmission shaft
To the inner surface rounding off of transmission shaft, the both ends of the slot position are arc-shaped；The needle roller is cylindrical, and the two of the needle roller
End is spherical surface；The needle roller is placed in the slot position.
6. the clamping device of rotation axis according to any one of claims 1 to 5, it is characterised in that: convex with the needle roller inside
The tangent circumscribed diameter of a circle in part is 2.10~2.20mm out.
7. the clamping device of rotation axis according to claim 6, it is characterised in that: the transmission shaft is connect with rotating electric machine
One end be equipped at intervals with double wedge, one end of the rotating electric machine is equipped with can be with the strip of the mutual clasp of the double wedge.
8. the clamping device of rotation axis according to claim 7, it is characterised in that: be also equipped with axis outside the transmission shaft
It holds, the bearing is used to support the transmission shaft and is rotated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820299243.3U CN209136941U (en) | 2018-03-05 | 2018-03-05 | A kind of clamping device of rotation axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820299243.3U CN209136941U (en) | 2018-03-05 | 2018-03-05 | A kind of clamping device of rotation axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209136941U true CN209136941U (en) | 2019-07-23 |
Family
ID=67263351
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820299243.3U Active CN209136941U (en) | 2018-03-05 | 2018-03-05 | A kind of clamping device of rotation axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209136941U (en) |
-
2018
- 2018-03-05 CN CN201820299243.3U patent/CN209136941U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |