CN220980237U - Mechanical speed-changing type transmission structure and grease gun - Google Patents
Mechanical speed-changing type transmission structure and grease gun Download PDFInfo
- Publication number
- CN220980237U CN220980237U CN202322595215.XU CN202322595215U CN220980237U CN 220980237 U CN220980237 U CN 220980237U CN 202322595215 U CN202322595215 U CN 202322595215U CN 220980237 U CN220980237 U CN 220980237U
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- changing
- duplex
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- 239000004519 grease Substances 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 title claims abstract description 15
- 230000003068 static effect Effects 0.000 claims abstract description 107
- 230000008859 change Effects 0.000 claims abstract description 40
- 230000009347 mechanical transmission Effects 0.000 claims 8
- 230000000694 effects Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 9
- 235000014121 butter Nutrition 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Structure Of Transmissions (AREA)
Abstract
The utility model provides a mechanical speed-changing type transmission structure and a grease gun, wherein the mechanical speed-changing type transmission structure comprises a motor; the planetary gear assembly is connected with the motor and driven by the motor to rotate; the speed changing gear assembly is meshed with the planetary gear assembly so as to rotate under the drive of the planetary gear assembly; the speed changing gear assembly comprises a speed changing duplex gear, a static duplex gear and a speed changing switch connected with the speed changing duplex gear, wherein the speed changing duplex gear comprises a first speed changing gear and a second speed changing gear, and the static duplex gear comprises a first static gear and a second static gear; when the first speed changing gear is meshed with the first static gear, the output rotating speed of the static duplex gear is the first rotating speed; when the speed change switch controls the speed change duplex gear to move to enable the second speed change gear to be meshed with the second static gear, the output rotating speed of the static duplex gear is the second rotating speed, and the first rotating speed is not equal to the second rotating speed. The grease gun can realize the effect of mechanical speed change and realize quantitative oil supply.
Description
Technical Field
The utility model relates to a mechanical speed-changing type transmission structure and a grease gun, and belongs to the technical field of grease guns.
Background
The grease gun is a hand tool for filling mechanical equipment with grease.
The grease gun in the current market mostly adopts electronic speed regulation to achieve the function of quantitative oil supply, however, the speed regulation has the condition of unstable oil output and the problem of short working time by virtue of electronic speed regulation, which is not more reliable than a mechanical structure.
In view of the foregoing, there is a need for improvements in the existing grease gun timing schemes to address the above-mentioned issues.
Disclosure of utility model
The utility model aims to provide a mechanical speed-changing type transmission structure so as to realize mechanical speed changing in the working process of a grease gun and play a role in quantitative oil supply.
In order to achieve the above object, the present utility model provides a mechanical speed-changing transmission structure, comprising:
A motor;
The planetary gear assembly is connected with the motor and driven by the motor to rotate; and
A speed changing gear assembly meshed with the planetary gear assembly to rotate under the drive of the planetary gear assembly; the speed changing gear assembly comprises a speed changing duplex gear, a static duplex gear and a speed changing switch connected with the speed changing duplex gear, wherein the speed changing duplex gear comprises a first speed changing gear and a second speed changing gear, and the static duplex gear comprises a first static gear and a second static gear;
When the first speed changing gear is meshed with the first static gear, the output rotating speed of the static duplex gear is a first rotating speed; when the speed change switch controls the speed change duplex gear to move to enable the second speed change gear to be meshed with the second static gear, the output rotating speed of the static duplex gear is a second rotating speed, and the first rotating speed is not equal to the second rotating speed.
As a further improvement of the utility model, the first speed changing gear and the second speed changing gear are mutually parallel and are arranged at intervals, and one end of the speed changing switch is arranged between the first speed changing gear and the second speed changing gear, so that the first speed changing gear and the second speed changing gear can be driven to move when the speed changing switch is shifted.
As a further improvement of the utility model, the first static gear and the second static gear are attached, a connecting part is arranged between the first speed changing gear and the second speed changing gear, and one end of the speed changing switch is fixedly connected with the connecting part.
As a further improvement of the present utility model, the width of the connecting portion is equal to or greater than the thickness of the first static gear, the outer diameter of the first speed change gear is greater than the outer diameter of the second speed change gear, and the outer diameter of the first static gear is smaller than the outer diameter of the second static gear.
As a further improvement of the utility model, the speed changing gear assembly further comprises a connecting shaft, and the speed changing duplex gear is arranged on the connecting shaft and can move back and forth relative to the connecting shaft so as to enable the speed changing duplex gear to be meshed with the first static gear and the second static gear for switching under the drive of the speed changing switch, thereby realizing speed changing.
As a further improvement of the present utility model, the speed changing gear assembly further includes a cylindrical gear fixedly installed on the connection shaft and located at one side of the speed changing duplex gear, and the cylindrical gear is engaged with the planetary gear assembly to drive the cylindrical gear and the connection shaft to rotate when the planetary gear assembly rotates.
As a further improvement of the utility model, the speed changing gear assembly further comprises a magnet and a sensor which is arranged opposite to the magnet, wherein the magnet is arranged at one end of the static duplex gear and can rotate along with the static duplex gear, and the sensor is used for sensing a magnetic field signal sent by the magnet and recording the rotation number of the static duplex gear.
As a further improvement of the utility model, the magnet is in a cylindrical shape, a groove is arranged on the side wall of the first static gear, the magnet is accommodated and fixed in the groove, and the sensor is arranged close to the first static gear and faces the groove.
As a further improvement of the present utility model, the gear ratio of the first speed change gear to the first static gear is 1:1.5, and the gear ratio of the second speed change gear to the second static gear is 1:3.5.
Another object of the present utility model is to provide a grease gun having the above-mentioned mechanical speed-changing type transmission structure.
To achieve the above object, the present utility model provides a grease gun comprising:
A body;
A housing;
the mechanical speed-changing type transmission structure is accommodated in the shell and comprises:
A motor;
The planetary gear assembly is connected with the motor and driven by the motor to rotate; and
A speed changing gear assembly meshed with the planetary gear assembly to rotate under the drive of the planetary gear assembly; the speed changing gear assembly comprises a speed changing duplex gear, a static duplex gear and a speed changing switch connected with the speed changing duplex gear, wherein the speed changing duplex gear comprises a first speed changing gear and a second speed changing gear, and the static duplex gear comprises a first static gear and a second static gear;
When the first speed changing gear is meshed with the first static gear, the output rotating speed of the static duplex gear is a first rotating speed; when the speed change switch controls the speed change duplex gear to move to enable the second speed change gear to be meshed with the second static gear, the output rotating speed of the static duplex gear is a second rotating speed, and the first rotating speed is not equal to the second rotating speed.
The beneficial effects of the utility model are as follows: according to the utility model, the speed changing duplex gear is arranged to comprise a first speed changing gear and a second speed changing gear, and the static duplex gear is arranged to comprise a first static gear and a second static gear; when the first speed changing gear is meshed with the first static gear, the output rotating speed of the static duplex gear is the first rotating speed; when the speed change switch controls the speed change duplex gear to move to enable the second speed change gear to be meshed with the second static gear, the output rotating speed of the static duplex gear is the second rotating speed, the first rotating speed is not equal to the second rotating speed, and then mechanical speed change is realized when the grease gun works, and quantitative oil supply is achieved.
Drawings
FIG. 1 is a cross-sectional view of a grease gun of the present utility model.
Fig. 2 is a sectional view in the direction C-C of fig. 1.
Fig. 3 is an enlarged view of circle a in fig. 1.
Fig. 4 is an enlarged view of circle B in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1-2, the present utility model discloses a grease gun 100, which includes a housing 101, a grease storage assembly 102, an eccentric reciprocating structure 103, and a mechanical speed changing transmission structure 104. The mechanical speed-changing transmission structure 104 is accommodated in the casing 101 and is connected with the eccentric reciprocating structure 103 to form a transmission assembly, so as to drive the eccentric reciprocating structure 103 to move, and the oil storage component 102 is connected with the eccentric reciprocating structure 103, so that butter in the oil storage component 102 is discharged.
In this embodiment, the oil storage assembly 102 includes an oil storage cylinder 4, a push rod 5 disposed in the oil storage cylinder 4 and used for extruding butter, a piston 51 fixed at the end of the push rod 5, and a coil spring 6 used for driving the push rod 5 to extrude butter, the oil outlet end of the oil storage cylinder 4 is connected with a pump 7 so as to extrude butter in the oil storage cylinder 4 into the pump 7, and a pressure release valve 8 is disposed at the bottom of the pump 7 so as to maintain pressure balance in the pump 7.
The eccentric reciprocating structure 103 comprises a plunger 9, one end of the plunger 9 is inserted into the pump 7, the other end of the plunger 9 is fixedly connected with an eccentric block 10, and an oil seal 11 is arranged at the joint of the plunger 9 and the pump 7. The eccentric block 10 has an arc hole, the eccentric block 10 is supported in front of the connecting piece 12 in a manner of moving up and down, the eccentric shaft 13 is arranged in the arc hole of the eccentric block 10, and the eccentric shaft 13 is in interference fit with the connecting piece 12.
When the connecting member 12 rotates, the eccentric motion of the eccentric shaft 13 causes the eccentric block 10 to reciprocate up and down by an amount of movement of the eccentric shaft 13 in the up-down direction, so that the plunger 9 moves up and down, and the pump 7 pumps out the butter supplied from the oil reservoir 4 by the up-down movement of the plunger 9 and directly discharges the butter via the hose 14. This discharge operation is repeated with the reciprocation of the plunger 9.
As shown in fig. 3-4 and in combination with fig. 1, the mechanical speed changing transmission structure 104 comprises a motor 1, a planetary gear assembly 2 and a speed changing gear assembly 3, wherein the planetary gear assembly 2 is connected with the motor 1 and is driven to rotate by the motor 1; the speed changing gear assembly 3 is meshed with the planetary gear assembly 2 so as to rotate under the drive of the planetary gear assembly 2. The specific structure of the motor 1 and the planetary gear assembly 2 may be implemented in a conventional manner, and thus will not be described in detail herein.
The speed changing gear assembly 3 comprises a speed changing duplex gear 31, a static duplex gear 32 and a speed changing switch 33 connected with the speed changing duplex gear 31, wherein the speed changing duplex gear 31 comprises a first speed changing gear 311 and a second speed changing gear 312, and the static duplex gear 32 comprises a first static gear 321 and a second static gear 322; when the first gear 311 is engaged with the first static gear 321, the output rotation speed of the static double gear 32 is a first rotation speed; when the speed change switch 33 controls the speed change duplex gear 31 to move to engage the second speed change gear 312 with the second static gear 322, the output rotation speed of the static duplex gear 32 is a second rotation speed, and the first rotation speed is not equal to the second rotation speed, so that the grease gun 100 achieves the effect of mechanical speed change.
In this embodiment, the static duplex gear 32 and the connecting piece 12 are press-fitted into an integral structure, and the eccentric reciprocating structure 103 moves at different speeds under the first rotation speed and the second rotation speed, so as to change the pressure in the pump 7 and adjust the discharging efficiency of the butter.
Specifically, the first gear 311 and the second gear 312 are parallel to each other and are spaced apart from each other, and one end of the speed change switch 33 is disposed between the first gear 311 and the second gear 312, so that the first gear 311 and the second gear 312 can be driven to move when the speed change switch 33 is shifted.
A connection portion 313 is provided between the first gear 311 and the second gear 312, and one end of the speed switch 33 is fixedly connected to the connection portion 313. Further, the width of the connecting portion 313 is greater than or equal to the thickness of the first static gear 321, the first static gear 321 and the second static gear 322 are attached, the outer diameter of the first static gear 321 is smaller than the outer diameter of the second static gear 322, and the outer diameter of the first speed changing gear 311 is greater than the outer diameter of the second speed changing gear 312. Thus, when the first gear 311 is meshed with the first gear 321, the second gear 312 is moved to the outside of the second gear 322, and the second gear 322 is disposed opposite to the connecting portion 313; while the second gear 312 is engaged with the second stationary gear 322, the first gear 311 is moved to the outside of the first stationary gear 321, and the first stationary gear 321 is disposed opposite to the connecting portion 313.
The speed-changing gear assembly 3 further comprises a connecting shaft 34, and the speed-changing duplex gear 31 is mounted on the connecting shaft 34 and can move back and forth relative to the connecting shaft 34, so that under the drive of the speed-changing switch 33, the speed-changing duplex gear 31 can be meshed with the first static gear 321 and the second static gear 322 to switch, and speed changing is achieved. The connecting shaft 34 may be a spline shaft or a shaft with other structures; when the connecting shaft 34 is a spline shaft, the speed-changing duplex gear 31 is in clearance fit with the spline shaft through a spline, so that the speed-changing duplex gear 31 can move back and forth under the stirring of the speed-changing switch 33.
In the present embodiment, the gear ratio of the first gear 311 to the first static gear 321 is 1:1.5, the gear ratio of the second gear 312 to the second static gear 322 is 1:3.5, and the first rotation speed is greater than the second rotation speed, in other words, the rotation speed of the gears can be changed by using the gear ratio between the gears.
The gear assembly 3 further comprises a cylindrical gear 35, the cylindrical gear 35 is fixedly mounted on the connecting shaft 34 and is located on one side of the gear 31, and the cylindrical gear 35 is meshed with the planetary gear assembly 2, so that the cylindrical gear 35 and the connecting shaft 34 can be driven to rotate when the planetary gear assembly 2 rotates.
As shown in fig. 1 and 4, the speed changing gear assembly 3 further includes a magnet 36 and a sensor 37 disposed opposite to the magnet 36, wherein the magnet 36 is disposed at one end of the static double gear 32 and can rotate along with the static double gear 32, and the sensor 37 is used for sensing a magnetic field signal emitted by the magnet 36. Preferably, the magnet 36 is cylindrically disposed, a groove 39 is disposed on a sidewall of the first static gear 321, the magnet 36 is accommodated and fixed in the groove 39, and the sensor 37 is disposed near the first static gear 321 and faces the groove 39. The sensor 37 is connected with the controller 38, when the static duplex gear 32 rotates, the magnet 36 emits a magnetic field signal, the sensor 37 senses the magnetic field signal and then transmits the magnetic field signal to the controller 38, and the controller 38 receives the magnetic field signal, so that the number of turns of the rotation of the static duplex gear 32 is recorded, quantitative oil supply is realized after data conversion, and the data of oil supply is relatively accurate because the static duplex gear 32 and the connecting piece 12 are pressed into an integrated structure.
In summary, the present utility model sets the static double gear 32 to include the first static gear 321 and the second static gear 322 by setting the speed change double gear 31 to include the first speed change gear 311 and the second speed change gear 312; so that when the first speed change gear 311 is meshed with the first static gear 321, the output rotation speed of the static double gear 32 is the first rotation speed; when the speed change switch 33 controls the speed change duplex gear 31 to move to engage the second speed change gear 312 with the second static gear 322, the output rotation speed of the static duplex gear 32 is the second rotation speed, and the first rotation speed is not equal to the second rotation speed, so that the mechanical speed change is realized when the grease gun 100 works, and the quantitative oil supply is realized.
The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.
Claims (10)
1. A mechanical speed change type transmission structure, comprising:
A motor;
The planetary gear assembly is connected with the motor and driven by the motor to rotate; and
A speed changing gear assembly meshed with the planetary gear assembly to rotate under the drive of the planetary gear assembly; the speed changing gear assembly comprises a speed changing duplex gear, a static duplex gear and a speed changing switch connected with the speed changing duplex gear, wherein the speed changing duplex gear comprises a first speed changing gear and a second speed changing gear, and the static duplex gear comprises a first static gear and a second static gear;
When the first speed changing gear is meshed with the first static gear, the output rotating speed of the static duplex gear is a first rotating speed; when the speed change switch controls the speed change duplex gear to move to enable the second speed change gear to be meshed with the second static gear, the output rotating speed of the static duplex gear is a second rotating speed, and the first rotating speed is not equal to the second rotating speed.
2. The mechanical transmission structure of claim 1, wherein: the first speed changing gear and the second speed changing gear are parallel to each other and are arranged at intervals, one end of the speed changing switch is arranged between the first speed changing gear and the second speed changing gear, and when the speed changing switch is shifted, the first speed changing gear and the second speed changing gear can be driven to move.
3. A mechanical transmission arrangement according to claim 2, characterized in that: the first static gear is attached to the second static gear, a connecting portion is arranged between the first speed changing gear and the second speed changing gear, and one end of the speed changing switch is fixedly connected with the connecting portion.
4. A mechanical transmission according to claim 3, characterized in that: the width of the connecting part is larger than or equal to the thickness of the first static gear, the outer diameter of the first speed changing gear is larger than the outer diameter of the second speed changing gear, and the outer diameter of the first static gear is smaller than the outer diameter of the second static gear.
5. The mechanical transmission structure of claim 1, wherein: the speed-changing gear assembly further comprises a connecting shaft, and the speed-changing duplex gear is installed on the connecting shaft and can move back and forth relative to the connecting shaft, so that the speed-changing duplex gear, the first static gear and the second static gear are meshed and switched under the drive of the speed-changing switch, and the speed changing is realized.
6. The mechanical transmission structure of claim 5, wherein: the speed-changing gear assembly further comprises a cylindrical gear, the cylindrical gear is fixedly arranged on the connecting shaft and located on one side of the speed-changing duplex gear, and the cylindrical gear is meshed with the planetary gear assembly so as to drive the cylindrical gear and the connecting shaft to rotate when the planetary gear assembly rotates.
7. The mechanical transmission structure of claim 1, wherein: the speed changing gear assembly further comprises a magnet and a sensor which is arranged opposite to the magnet, the magnet is arranged at one end of the static duplex gear and can rotate along with the static duplex gear, and the sensor is used for sensing magnetic field signals sent by the magnet and recording the number of rotation turns of the static duplex gear.
8. The mechanical transmission structure of claim 7, wherein: the magnet is cylindrical, a groove is formed in the side wall of the first static gear, the magnet is contained and fixed in the groove, and the sensor is close to the first static gear and faces the groove.
9. The mechanical transmission structure of claim 1, wherein: the gear ratio of the first gear to the first static gear is 1:1.5, and the gear ratio of the second gear to the second static gear is 1:3.5.
10. A grease gun, comprising:
A body;
A housing;
the mechanical speed-changing type transmission structure is accommodated in the shell and comprises:
A motor;
The planetary gear assembly is connected with the motor and driven by the motor to rotate; and
A speed changing gear assembly meshed with the planetary gear assembly to rotate under the drive of the planetary gear assembly; the speed changing gear assembly comprises a speed changing duplex gear, a static duplex gear and a speed changing switch connected with the speed changing duplex gear, wherein the speed changing duplex gear comprises a first speed changing gear and a second speed changing gear, and the static duplex gear comprises a first static gear and a second static gear;
When the first speed changing gear is meshed with the first static gear, the output rotating speed of the static duplex gear is a first rotating speed; when the speed change switch controls the speed change duplex gear to move to enable the second speed change gear to be meshed with the second static gear, the output rotating speed of the static duplex gear is a second rotating speed, and the first rotating speed is not equal to the second rotating speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322595215.XU CN220980237U (en) | 2023-09-22 | 2023-09-22 | Mechanical speed-changing type transmission structure and grease gun |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322595215.XU CN220980237U (en) | 2023-09-22 | 2023-09-22 | Mechanical speed-changing type transmission structure and grease gun |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220980237U true CN220980237U (en) | 2024-05-17 |
Family
ID=91061495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322595215.XU Active CN220980237U (en) | 2023-09-22 | 2023-09-22 | Mechanical speed-changing type transmission structure and grease gun |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220980237U (en) |
-
2023
- 2023-09-22 CN CN202322595215.XU patent/CN220980237U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |