CN215928290U - Device for converting circular motion into linear motion - Google Patents
Device for converting circular motion into linear motion Download PDFInfo
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- CN215928290U CN215928290U CN202121128702.XU CN202121128702U CN215928290U CN 215928290 U CN215928290 U CN 215928290U CN 202121128702 U CN202121128702 U CN 202121128702U CN 215928290 U CN215928290 U CN 215928290U
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- worm wheel
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- linear motion
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Abstract
The utility model belongs to the technical field of medical auxiliary instruments, and particularly relates to a device for converting circular motion into linear motion. The utility model adopts the half worm wheel to replace the bevel wheel or the worm wheel, and has at least the following advantages: firstly, the half worm wheel can be machined and injection-molded, and compared with a worm wheel, the half worm wheel is lower in cost; secondly, the half worm wheel has higher strength than the helical gear and long service life; and thirdly, the contact area of the half worm wheel is larger than that of the helical gear, so that the transmission structure operates more stably, and the noise is smaller.
Description
Technical Field
The utility model belongs to the technical field of medical auxiliary instruments, and particularly relates to a device for converting circular motion into linear motion.
Background
At present, people generally use toothbrushes to clean teeth, however, the existing toothbrushes only can clean dirt and residues on the surfaces of the teeth, and are difficult to completely remove residues in gaps between the teeth, especially more and more people do orthodontic shaping at present, the residues in shaping steel wires and pressing blocks are difficult to brush out through the toothbrushes and are difficult to remove by toothpicks or dental floss, so that electric tooth rinsers are popular with the public more and more, and the electric tooth rinsers mainly use high-speed water flow to rinse the teeth to achieve the effect of cleaning the teeth.
The nasal irrigator is used for flushing normal saline into the nasal cavity of a user, and discharging accumulated dirt in the nasal cavity by virtue of the sterilization effect of the normal saline and the impact force of water flow, so that the nasal cavity recovers the normal physiological environment, and the nasal irrigator has a good effect on cold and nasal obstruction.
The water pump device comprises a transmission component, a piston and a piston cylinder, the transmission component generally comprises a motor, a worm, a gear (or a worm wheel), an eccentric wheel and a connecting rod, the motor drives the worm to rotate when rotating, the worm rotates to further drive the gear (or the worm wheel) and the eccentric wheel to rotate, and the eccentric wheel drives the piston to reciprocate in the piston cylinder through the connecting rod, so that water is pumped out.
However, in the existing tooth flusher and nose washer, the bevel gear or worm gear is used as the gear, the structure using the bevel gear is low in manufacturing cost (can be injected), but the contact surface is small, the strength is low, the service life is not long, and the structure using the worm gear is long in service life but high in cost, because the worm gear can only be machined and cannot be injected.
In view of the above, the inventor of the present application has diligently studied and studied at night and so on to develop a device for converting a circular motion into a linear motion, which not only greatly reduces the manufacturing cost, but also prolongs the service life and makes less noise through a smart design.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: aiming at the defects of the prior art, the device for converting the circular motion into the linear motion is provided, and not only is the manufacturing cost greatly reduced, but also the service life is prolonged and the noise is smaller through the ingenious design.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a device for converting circular motion into linear motion comprises a motor, a worm, a half worm wheel, an eccentric wheel and a connecting rod structure, wherein the worm is sleeved on an output shaft of the motor, the worm is meshed with the half worm wheel, the eccentric wheel and the connecting rod structure are sleeved on a central shaft of the half worm wheel, and a clearance groove body for the eccentric wheel to rotate is arranged on the connecting rod structure.
As an improvement of the apparatus for converting a circular motion into a linear motion according to the present invention, the half worm includes a body and a tooth portion provided on an outer peripheral wall of the body, and the tooth portion includes a worm gear tooth portion having an outer surface with a curved arc and a helical tooth portion integrally formed with the worm gear tooth portion. In popular terms, the half worm wheel is in a structure of 'half worm wheel and half helical gear', namely the half worm wheel is the organic combination of the worm wheel and the helical gear.
As an improvement of the device for converting circular motion into linear motion, the inclination angles of the worm gear tooth part and the bevel tooth part are 5-30 degrees.
As an improvement of the device for converting circular motion into linear motion, the connecting rod structure comprises a rod body and a cavity connected with the rod body, and the clearance groove body is arranged in the cavity.
As an improvement of the device for converting circular motion into linear motion, the clearance groove body is an elliptical groove.
As an improvement of the device for converting the circular motion into the linear motion, the bottom of the clearance groove body is provided with a straight-bar-shaped limiting hole through which a central shaft of the half worm wheel can pass.
As an improvement of the device for converting a circular motion into a linear motion according to the present invention, the half worm wheel is integrally formed with the eccentric wheel.
When the worm gear is used, the motor starts to operate, the output shaft of the motor starts to rotate (circular motion), so that the worm on the motor is driven to rotate, the worm drives the half worm wheel meshed with the worm to rotate, when the half worm wheel rotates, the eccentric wheel sleeved on the central shaft of the eccentric wheel rotates in the clearance groove body, so that the connecting rod structure is driven to move, the connecting rod structure realizes linear motion under the limiting effect of the central shaft of the half worm wheel, and thus, the conversion from the circular motion to the linear motion is realized.
Compared with the prior art, the utility model adopts the half-worm gear to replace a straight gear or a worm gear, and has at least the following advantages:
firstly, the half worm wheel can be machined and injection-molded, and compared with a worm wheel, the half worm wheel is lower in cost;
secondly, the half worm wheel has higher strength than the helical gear and long service life;
and thirdly, the contact area of the half worm wheel is larger than that of the helical gear, so that the transmission structure operates more stably, and the noise is smaller.
In addition, due to the arrangement of the straight-bar-shaped limiting holes, the connecting rod can only reciprocate back and forth and cannot sway left and right, and therefore the sealing performance and the service life of the piston connected with the connecting rod can be improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is an exploded view of the present invention (motor not shown).
Fig. 3 is a side view of the present invention (motor and worm not shown).
Fig. 4 is a schematic structural diagram of a half worm wheel and an eccentric wheel in the utility model.
FIG. 5 is a cross-sectional view of the connecting rod structure of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
As shown in fig. 1 to 5, the present invention provides a device for converting a circular motion into a linear motion, which includes a motor 1, a worm 2, a half-worm wheel 3, an eccentric wheel 4 and a connecting rod structure 5, wherein the worm 2 is sleeved on an output shaft 10 of the motor 1, the worm 2 is engaged with the half-worm wheel 3, the eccentric wheel 4 and the connecting rod structure 5 are sleeved on a central shaft 30 of the half-worm wheel 3, and the connecting rod structure 5 is provided with a clearance groove 51 for the eccentric wheel 4 to rotate.
The half worm wheel 3 includes a body 31 and a tooth portion 32 provided on an outer peripheral wall of the body 31, and the tooth portion 32 includes a worm wheel tooth portion 321 having a curved outer surface and a helical tooth portion 322 integrally formed with the worm wheel tooth portion 321. In popular terms, the half worm wheel 3 is structured as a half worm wheel and a half helical gear, namely, the half worm wheel 3 is an organic combination of the worm wheel and the helical gear. Wherein, the inclination angles of the worm gear tooth part 321 and the helical tooth part 322 are 5-30 degrees.
The connecting rod structure 5 includes a rod 52 and a cavity 53 connected to the rod 52, and the clearance groove 51 is disposed in the cavity 53. The clearance groove 51 is an elliptical groove, which facilitates the rotation of the eccentric wheel 4.
The bottom of the clearance groove body 51 is provided with a straight strip-shaped limiting hole 54 for the central shaft 30 of the semi-worm wheel 3 to pass through, so that the movement of the connecting rod structure 5 is limited, and the connecting rod structure can only move back and forth but not move left and right, namely, the connecting rod structure cannot shake.
As shown in fig. 4, the half worm wheel 3 and the eccentric wheel 4 are integrally formed, so that the cost can be reduced.
When the device is used, the motor 1 starts to operate, the output shaft 10 starts to rotate (circular motion), so that the worm 2 on the motor is driven to rotate, the worm 2 drives the half worm wheel 3 meshed with the worm 2 to rotate, when the half worm wheel 3 rotates, the eccentric wheel 4 sleeved on the central shaft 30 rotates in the clearance groove 51, the connecting rod structure 5 is driven to move, the connecting rod structure 5 realizes linear motion under the limiting effect of the central shaft 30 of the half worm wheel 3, and therefore conversion from circular motion to linear motion is achieved.
Appropriate changes and modifications to the embodiments described above will become apparent to those skilled in the art from the disclosure and teachings of the foregoing description. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and variations of the present invention should fall within the scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (7)
1. A device for converting circular motion to linear motion, comprising: the worm is sleeved on an output shaft of the motor, the worm is meshed with the half worm wheel, the eccentric wheel and the connecting rod structure are sleeved on a central shaft of the half worm wheel, and a space-avoiding groove body for the eccentric wheel to rotate is arranged on the connecting rod structure.
2. The apparatus for converting circular motion to linear motion of claim 1, wherein: the semi-worm gear comprises a body and a tooth part arranged on the outer peripheral wall of the body, wherein the tooth part comprises a worm gear tooth part with a curved radian on the outer surface and an oblique tooth part integrally formed with the worm gear tooth part.
3. The apparatus for converting circular motion to linear motion of claim 2, wherein: the inclination angles of the worm gear tooth part and the inclined tooth part are 5-30 degrees.
4. The apparatus for converting circular motion to linear motion of claim 1, wherein: the connecting rod structure comprises a rod body and a cavity connected with the rod body, and the clearance groove body is arranged in the cavity.
5. The apparatus for converting circular motion to linear motion of claim 4, wherein: the clearance groove body is an elliptical groove.
6. The apparatus for converting circular motion to linear motion of claim 4, wherein: and a straight strip-shaped limiting hole for the central shaft of the half worm wheel to pass through is formed in the bottom of the clearance groove body.
7. The apparatus for converting circular motion to linear motion of claim 1, wherein: the half worm wheel and the eccentric wheel are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121128702.XU CN215928290U (en) | 2021-05-25 | 2021-05-25 | Device for converting circular motion into linear motion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121128702.XU CN215928290U (en) | 2021-05-25 | 2021-05-25 | Device for converting circular motion into linear motion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215928290U true CN215928290U (en) | 2022-03-01 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121128702.XU Active CN215928290U (en) | 2021-05-25 | 2021-05-25 | Device for converting circular motion into linear motion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215928290U (en) |
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2021
- 2021-05-25 CN CN202121128702.XU patent/CN215928290U/en active Active
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