CN210877690U - Low-speed drill - Google Patents
Low-speed drill Download PDFInfo
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- CN210877690U CN210877690U CN201921577582.4U CN201921577582U CN210877690U CN 210877690 U CN210877690 U CN 210877690U CN 201921577582 U CN201921577582 U CN 201921577582U CN 210877690 U CN210877690 U CN 210877690U
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- auxiliary handle
- output shaft
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Abstract
The utility model provides a low-speed drill, includes casing, handle, motor, drive assembly and drill chuck, the handle sets up the bottom at the casing, the motor is installed in the casing to be connected with the drill chuck through drive assembly, the rear end of casing is equipped with the back shroud, the front end of casing is equipped with middle lid and head shell in proper order, drive assembly includes one-level drive assembly, second grade drive assembly and tertiary drive assembly, the low-speed drill still includes first auxiliary handle and second auxiliary handle, first auxiliary handle level sets up and installs on the rear end of back shroud, second auxiliary handle is cylindricality and vertical arrangement to cover in the middle of installing. The utility model provides a convenient to use, great low-speed of moment of torsion bore.
Description
Technical Field
The utility model belongs to the technical field of the electric drill technique and specifically relates to a low-speed brill is related to.
Background
The existing electric drill has the defects of high speed and small torque, and is low in safety and labor-consuming in use.
Disclosure of Invention
In order to overcome the defects of the existing electric drill, the utility model provides a low-speed drill with convenient use and large torque.
The utility model provides a technical scheme that its technical problem adopted is:
a low-speed drill comprises a casing, a handle, a motor, a transmission assembly and a drill chuck, wherein the handle is arranged at the bottom of the casing, the motor is installed in the casing and is connected with the drill chuck through the transmission assembly, a rear cover is arranged at the rear end of the casing, a middle cover and a head casing are sequentially arranged at the front end of the casing, the transmission assembly comprises a primary transmission assembly, a secondary transmission assembly and a tertiary transmission assembly, the primary transmission assembly comprises a primary bevel gear and a primary transmission gear shaft, the front end and the rear end of the primary transmission gear shaft are respectively rotatably installed on the head casing and the middle cover through a bearing, the primary bevel gear is installed on the primary transmission gear shaft, an output shaft of the motor penetrates through a center hole of the middle cover, and a spiral tooth on the output shaft is meshed with the primary bevel gear; the secondary transmission assembly comprises a secondary transmission gear and a secondary transmission gear shaft, the front end and the rear end of the secondary transmission gear shaft are respectively rotatably arranged on the head shell and the middle cover through a bearing, the secondary transmission gear is arranged on the secondary transmission gear shaft, and the secondary transmission gear is meshed with the primary bevel gear; the three-stage transmission assembly comprises a three-stage large gear and an output shaft, the front end and the rear end of the output shaft are respectively rotatably arranged on the head shell and the middle cover through a bearing, and the three-stage large gear is arranged on the output shaft and is meshed with the two-stage transmission gear; the shaft elastic retainer ring is sleeved on the output shaft and arranged at the rear side of the third-stage large gear, and the hole elastic retainer ring is positioned at the front side of the third-stage large gear and arranged on the output shaft;
the low-speed drill further comprises a first auxiliary handle and a second auxiliary handle, the first auxiliary handle is horizontally arranged and mounted at the rear end of the rear cover, and the second auxiliary handle is cylindrical and vertically arranged and mounted on the middle cover.
Furthermore, the first auxiliary handle and the rear cover and the second auxiliary handle and the middle cover are in threaded connection.
The beneficial effects of the utility model are that: convenient use, low speed and large torque.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, a low-speed drill includes a housing 28, a handle disposed at the bottom of the housing 28, a motor mounted in the housing, and is connected with a drill chuck through a transmission component, the rear end of the machine shell 28 is provided with a rear cover 33, the front end of the machine shell 28 is sequentially provided with an intermediate cover 18 and a head shell 2, the transmission assembly comprises a primary transmission assembly, a secondary transmission assembly and a tertiary transmission assembly, the primary transmission assembly comprises a primary bevel gear 15 and a primary transmission gear shaft 14, the front end and the rear end of the primary transmission gear shaft 14 are respectively rotatably arranged on the head shell 2 and the middle cover 18 through a bearing 13 and a bearing 16, the primary bevel gear 15 is arranged on the primary transmission gear shaft 14, the output shaft of the motor passes through the central hole of the middle cover 18, and the spiral teeth on the output shaft are meshed with the primary bevel gear 15; the secondary transmission assembly comprises a secondary transmission gear 11 and a secondary transmission gear shaft 10, the front end and the rear end of the secondary transmission gear shaft 10 are rotatably arranged on the head shell 2 and the middle cover 18 through a bearing 9 and a bearing 12 respectively, the secondary transmission gear 11 is arranged on the secondary transmission gear shaft 10, and the secondary transmission gear 11 is meshed with the primary bevel gear 15; the three-stage transmission assembly comprises a three-stage gearwheel 7 and an output shaft 3, the front end and the rear end of the output shaft 3 are respectively rotatably provided with a head shell 2 and an intermediate cover 18 through bearings 4 and 8, and the three-stage gearwheel 7 is arranged on the output shaft 3 and meshed with a two-stage transmission gear 11; the elastic check ring for shaft 6 is sleeved on the output shaft 3 and arranged at the rear side of the third-stage large gear 7, and the elastic check ring for hole 5 is positioned at the front side of the third-stage large gear 7 and is arranged on the output shaft 3;
the low-speed drill further includes a first auxiliary handle 47 and a second auxiliary handle 46, the first auxiliary handle 47 is horizontally disposed and mounted on the rear end of the rear cover 33, and the second auxiliary handle 46 is cylindrical and vertically disposed and mounted on the intermediate cover 18.
Further, the first auxiliary handle 47 and the rear cover 33, and the second auxiliary handle 46 and the middle cover 18 are all in threaded connection.
In the embodiment, the motor comprises a rotor assembly 24, a stator assembly and a carbon brush component, wherein the rotor assembly 24 is positioned in the stator assembly and is connected with a drill chuck 45 through a transmission component, the stator assembly is arranged in a machine shell 28, and the carbon brush component is arranged at the rear part of the rotor assembly; the stator assembly comprises a stator 22 and a tension spring 23, the stator assembly is arranged on the shell 28 through a cross pan head screw 21, and the tension spring 23 plays a role in connecting the stator 22 and the brush holder 30; each carbon brush assembly includes a brush holder 30, a carbon brush 31 and a brush holder cover 32, the carbon brush 31 is located in the brush holder 30, the brush holder cover 32 is connected to the brush holder 30, and the carbon brush 31 is in contact with the rotor assembly 24. An output shaft of the rotor assembly 24 is mounted on a central hole of the middle cover 18 through a bearing 20, a wool pad 19 is further arranged between the bearing 20 and the middle cover 18, the rear end of the rotor assembly 24 is mounted on a rear cover 33 through a bearing 25, a bearing sleeve 26 is further arranged outside the bearing 25, and a wind blocking ring 27 is located in the front portion of the machine shell and sleeved on the rotor assembly 24.
The rear cover 33 is installed on the machine shell 28 through a cross pan head screw 34, the head shell 2 is installed on the middle cover 18 through a cross pan head screw 1, the middle cover 18 is connected with the machine shell 28 through a cylindrical positioning pin 17, and the top of the machine shell is further provided with a trademark mark 29.
The handle comprises a left handle 38 and a right handle 41 which are buckled together and connected through a cross pan head screw 37, the handle is provided with a switch button 44 and a forward and reverse rotation switch 43, a cable sheath 36 is arranged outside the cable 35 and is respectively connected with the switch button 44 and the forward and reverse rotation switch 43, a cable pressing plate 40 is arranged in the handle and used for pressing the cable, and the cable pressing plate 40 is arranged in the right handle 41 through a cross pan head screw 39. The switch button 44 and the forward and reverse rotation switch 43 are respectively connected with the motor, and the drill chuck 45 is provided with an electric drill bit.
The utility model discloses a theory of operation does: the motor drives the first-stage transmission assembly, the first-stage transmission assembly drives the second-stage transmission assembly, the second-stage transmission assembly drives the third-stage transmission assembly, and the third-stage transmission assembly drives the drill chuck 45. Each stage plays a role in reducing speed and increasing torque force at the same time, so that a large torque force output function is achieved.
The utility model discloses a rotor assembly 24 is through the tertiary continuous speed reduction, improves the moment of torsion, and the rotational speed of original motor 20000 many changes has advanced tertiary speed reduction, and the rotational speed of output shaft output is 500 many changes, enlargies 40 multifold to the moment of torsion of motor promptly to improve the torque of machine output greatly.
Claims (2)
1. The utility model provides a low-speed drill, includes casing, handle, motor, drive assembly and drill chuck, the handle sets up the bottom at the casing, the motor is installed in the casing to be connected with drill chuck through drive assembly, the rear end of casing is equipped with the back shroud, the front end of casing is equipped with middle lid and head shell in proper order, its characterized in that: the transmission assembly comprises a primary transmission assembly, a secondary transmission assembly and a tertiary transmission assembly, the primary transmission assembly comprises a primary helical gear and a primary transmission gear shaft, the front end and the rear end of the primary transmission gear shaft are respectively rotatably arranged on the head shell and the middle cover through a bearing, the primary helical gear is arranged on the primary transmission gear shaft, the output shaft of the motor penetrates through the center hole of the middle cover, and the helical gear on the output shaft is meshed with the primary helical gear; the secondary transmission assembly comprises a secondary transmission gear and a secondary transmission gear shaft, the front end and the rear end of the secondary transmission gear shaft are respectively rotatably arranged on the head shell and the middle cover through a bearing, the secondary transmission gear is arranged on the secondary transmission gear shaft, and the secondary transmission gear is meshed with the primary bevel gear; the three-stage transmission assembly comprises a three-stage large gear and an output shaft, the front end and the rear end of the output shaft are respectively rotatably arranged on the head shell and the middle cover through a bearing, and the three-stage large gear is arranged on the output shaft and is meshed with the two-stage transmission gear; the shaft elastic retainer ring is sleeved on the output shaft and arranged at the rear side of the third-stage large gear, and the hole elastic retainer ring is positioned at the front side of the third-stage large gear and arranged on the output shaft;
the low-speed drill further comprises a first auxiliary handle and a second auxiliary handle, the first auxiliary handle is horizontally arranged and mounted at the rear end of the rear cover, and the second auxiliary handle is cylindrical and vertically arranged and mounted on the middle cover.
2. The low-speed drill of claim 1, wherein: and the first auxiliary handle and the rear cover and the second auxiliary handle and the middle cover are in threaded connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921577582.4U CN210877690U (en) | 2019-09-20 | 2019-09-20 | Low-speed drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921577582.4U CN210877690U (en) | 2019-09-20 | 2019-09-20 | Low-speed drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210877690U true CN210877690U (en) | 2020-06-30 |
Family
ID=71334179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921577582.4U Active CN210877690U (en) | 2019-09-20 | 2019-09-20 | Low-speed drill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210877690U (en) |
-
2019
- 2019-09-20 CN CN201921577582.4U patent/CN210877690U/en active Active
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