CN217728581U - Electric screw driver - Google Patents
Electric screw driver Download PDFInfo
- Publication number
- CN217728581U CN217728581U CN202221654028.3U CN202221654028U CN217728581U CN 217728581 U CN217728581 U CN 217728581U CN 202221654028 U CN202221654028 U CN 202221654028U CN 217728581 U CN217728581 U CN 217728581U
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- limit
- gear
- sleeve
- ring
- driving motor
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Abstract
The utility model discloses an electric screwdriver, wherein, the electric screwdriver comprises a speed changing module and a driving motor; the speed changing module comprises a sleeve, a limiting gear ring and a speed changing gear set, the limiting gear ring is sleeved on the speed changing gear set, a plurality of sequentially continuous engaging teeth are arranged on one side, facing the speed changing gear set, of the limiting gear ring, the plurality of engaging teeth on the limiting gear ring are meshed with the speed changing gear set, the limiting gear ring is in close fit with the sleeve, and the outer peripheral wall of the limiting gear ring is bonded to the inner peripheral wall of the sleeve; the driving motor is provided with a rotating shaft, the rotating shaft is connected to one end of the speed change gear set, and the driving motor is used for driving the speed change gear set to rotate. The utility model discloses technical scheme can increase spacing ring gear and telescopic assembly stability to increase electric screwdriver's work efficiency.
Description
Technical Field
The utility model relates to an electric screwdriver technical field, in particular to electric screwdriver.
Background
An electric screwdriver, also known as a screwdriver or an electric screwdriver, is an electric tool for screwing and unscrewing screws. The electric screwdriver is one of the necessary tools for most production enterprises. Common electric screwdriver rotates through the change gear unit in the driving motor drive sleeve, be equipped with a spacing ring gear in order to cooperate the gear in the spacing change gear unit in change gear unit's outside, present spacing ring gear is installed in the sleeve, and closely cooperate in the sleeve, after long-time work, the skew of position can take place on the axial direction for spacing ring gear, the stability of spacing ring gear and telescopic assembly is lower, the unable normal work of gear in the change gear unit, influence electric screwdriver's normal work.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an electric screwdriver aims at increasing spacing ring gear and telescopic assembly stability.
In order to achieve the above object, the utility model provides an electric screwdriver, include:
the speed changing module comprises a sleeve, a limiting gear ring and a speed changing gear set, wherein the limiting gear ring is sleeved on the speed changing gear set, a plurality of sequentially continuous tooth teeth are arranged on one side, facing the speed changing gear set, of the limiting gear ring, the plurality of tooth teeth on the limiting gear ring are meshed with the speed changing gear set, the limiting gear ring is in close fit with the sleeve, and the outer peripheral wall of the limiting gear ring is bonded to the inner peripheral wall of the sleeve; and
and the driving motor is provided with a rotating shaft, the rotating shaft is connected to one end of the speed change gear set, and the driving motor is used for driving the speed change gear set to rotate.
Optionally, be equipped with the mounting hole on the sleeve, the variable speed module still includes the mounting, spacing ring gear orientation one side of sleeve is equipped with the fixed orifices, the fixed orifices is followed the radial direction of spacing ring gear extend and with a plurality of the rodent interval, the mounting passes the mounting hole is fixed in the fixed orifices.
Optionally, a bottom plate is arranged at one end of the sleeve, one side of the limit gear ring abuts against the bottom plate, and one end of the driving motor, which is provided with the rotating shaft, is adjacent to the other side of the limit gear ring.
Optionally, still be equipped with first stop screw on the sleeve, driving motor orientation the one end of limit ring gear is equipped with first screw hole, just first screw hole is located driving motor's periphery wall, first stop screw wears to locate telescopic lateral wall and spiro union in first screw hole, first stop screw is located limit ring gear deviates from one side of bottom plate.
Optionally, the number of the first limit screws is a plurality of, and any two adjacent first limit screws are arranged along the circumferential direction of the sleeve at even intervals, the driving motor is provided with a plurality of first threaded holes, and the first limit screws are screwed in the first threaded holes.
Optionally, the speed changing module further includes a retaining ring, the retaining ring is disposed between the limit gear and the driving motor, the driving motor has a rotation shaft penetrating the retaining ring, the driving motor is provided with one end of the rotation shaft abutting against the retaining ring, and the limit gear faces towards one side of the driving motor abutting against the retaining ring.
Optionally, the speed change gear set includes a sun gear and a plurality of planetary gears, the plurality of planetary gears are evenly spaced along a circumferential direction of the sun gear and are all meshed with the sun gear, and the sun gear is connected with the rotating shaft.
Optionally, a plurality of the planet gears are each respectively engaged with a plurality of the teeth on the limit ring gear.
Optionally, the number of the planet gears is four, and the four planet gears are uniformly distributed at intervals along the circumferential direction of the sun gear.
Optionally, the sleeve orientation one side of spacing ring gear is equipped with spacing boss, spacing ring gear orientation one side of sleeve is equipped with the sliding tray, the sliding tray is in the axial direction of spacing ring gear extends, and with a plurality of the rodent interval, spacing boss cooperation peg graft in the sliding tray.
The utility model discloses technical scheme is through being equipped with the adhesive linkage at telescopic internal perisporium, installs spacing ring gear into the sleeve again in, spacing ring gear passes through the adhesive linkage and bonds on telescopic internal perisporium, and wherein, sleeve and spacing ring gear adopt interference fit's mode. Set up like this and can restrict limit gear ring and follow telescopic circumferential direction in the sleeve, can increase the stability that limit gear ring installed in the sleeve, so at change gear unit long-time rotation in-process, limit gear ring can not skew along with change gear unit's rotation, so increase change gear unit's rotational stability in the limit gear ring, change gear unit also can not deviate the rotation orbit of normal work simultaneously.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic structural view of an embodiment of the electric screwdriver of the present invention;
FIG. 2 is a schematic view of the sleeve of FIG. 1;
fig. 3 is a schematic structural view of the transmission gear set of fig. 1.
The reference numbers indicate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 10 | |
101 | |
| 102 | |
11 | |
| 12 | Speed |
121 | Sun |
| 122 | |
123 | |
| 124 | |
13 | |
| 131 | Rotating shaft | 132 | First threaded |
| 14 | Check |
15 | |
| 16 | Screwdriver head module |
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
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 some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, the expression "and/or" as used throughout is meant to encompass three juxtaposed aspects, exemplified by "A and/or B", including either the A aspect, or the B aspect, or aspects in which both A and B are satisfied. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides an electric screwdriver.
In the embodiment of the present invention, as shown in fig. 1 to 3, the electric screwdriver includes a speed changing module and a driving motor 13; the speed changing module comprises a sleeve 10, a limiting gear ring 11 and a speed changing gear set 12, wherein the limiting gear ring 11 is sleeved on the speed changing gear set 12, a plurality of sequentially continuous tooth teeth are arranged on one side, facing the speed changing gear set 12, of the limiting gear ring 11, the plurality of tooth teeth on the limiting gear ring 11 are meshed with the speed changing gear set 12, the limiting gear ring 11 is in close fit with the sleeve 10, and the outer peripheral wall of the limiting gear ring 11 is bonded to the inner peripheral wall of the sleeve 10; the driving motor 13 is provided with a rotating shaft 131, the rotating shaft 131 is connected to one end of the speed change gear set 12, and the driving motor 13 is used for driving the speed change gear set 12 to rotate.
The utility model discloses technical scheme is equipped with the adhesive linkage through the internal perisporium at sleeve 10, installs limit gear 11 into sleeve 10 again in, and limit gear 11 bonds on sleeve 10's internal perisporium through the adhesive linkage, and wherein, sleeve 10 and limit gear 11 adopt interference fit's mode. Set up like this and can restrict limit ring gear 11 and follow sleeve 10's circumferential direction in sleeve 10, can increase the stability that limit ring gear 11 installed in sleeve 10, so at speed gearset 12 long-time rotation in-process, limit ring gear 11 can not skew along with speed gearset 12's rotation, so increase speed gearset 12's rotational stability in limit ring gear 11, speed gearset 12 can not deviate from the rotation orbit of normal work yet simultaneously.
In this embodiment, the electric screwdriver further comprises a handle shell 15 and a screwdriver head module 16, the speed change gear set 12 and the driving motor 13 are all installed in the handle shell 15, the screwdriver head module 16 is in driving connection with the speed change gear set 12, the screwdriver head module 16 is used for matching with screwing or loosening screws, and the handle shell 15 is used for being held by a user.
In an embodiment, the sleeve 10 is provided with a mounting hole, the speed changing module further includes a fixing member, a fixing hole is provided on a side of the limit gear ring 11 facing the sleeve 10, the fixing hole extends along a radial direction of the limit gear ring 11 and is spaced from the plurality of teeth, and the fixing member passes through the mounting hole and is fixed in the fixing hole.
Particularly, in this embodiment, the mounting is the self tapping screw, the inner wall of fixed orifices is not equipped with the screw thread, and the diameter of fixed orifices slightly is less than the diameter of self tapping screw, the self tapping screw inserts the fixed orifices after passing the mounting hole, and drill out corresponding screw thread with the fixed orifices inner wall through the screw thread of self tapping screw itself, make self tapping screw and fixed orifices closely cooperate each other, thereby with spacing ring gear and muffjoint, the mounting can restrict the ascending removal of spacing ring gear 11 along the axial direction of sleeve 10, also can restrict the ascending rotation of spacing ring gear 11 along sleeve 10 circumferential direction. The arrangement can increase the installation stability of the limit gear ring 11 and ensure the stable rotation of the speed change gear set 12. In other embodiments, the fixing member is a fastening screw, the fixing hole is provided with an internal thread, and the fastening screw passes through the mounting hole and is screwed with the fixing hole.
In one embodiment, one end of the sleeve 10 is provided with a bottom plate 102, one side of the limit gear ring 11 abuts against the bottom plate 102, and one end of the driving motor 13 provided with a rotating shaft 131 abuts against the other side of the limit gear ring 11.
Specifically, one side of the limit ring gear 11 abuts against the base plate 102, that is, the end of the drive motor 13 where the rotating shaft 131 is provided and the base plate 102 sandwich the limit ring gear 11. This arrangement can restrict the movement of the limit ring gear 11 in the axial direction of the sleeve 10, increasing the mounting stability of the limit ring gear 11. In other embodiments, the inner side of the sleeve 10 is provided with a fixing boss, the fixing boss extends along the radial direction of the sleeve 10, and one side of the limit gear ring 11 abuts against the fixing boss.
In an embodiment, the sleeve 10 is further provided with a first limit screw 101, one end of the driving motor 13 facing the limit gear ring 11 is provided with a first threaded hole 132, the first threaded hole 132 is located on the outer peripheral wall of the driving motor 13, the first limit screw 101 is inserted into the side wall of the sleeve 10 and screwed into the first threaded hole 132, and the first limit screw 101 is located on one side of the limit gear ring 11 away from the bottom plate 102.
Specifically, the driving motor 13 is inserted into the sleeve 10, that is, the outer circumferential wall of the driving motor 13 abuts against the inner circumferential wall of the sleeve 10, the first limit screw 101 fixes the driving motor 13 and the sleeve 10 together, and the first limit screw 101 can limit the movement of the driving motor 13 in the axial direction of the sleeve 10 and also can limit the rotation of the driving motor 13 in the circumferential direction of the sleeve 10. This arrangement can increase the mounting stability of the drive motor 13. In other embodiments, the sleeve 10 is further provided with a first positioning pin, one end of the limit gear ring 11 is provided with a first pin hole, the first pin hole is located on the outer peripheral wall of the driving motor 13, the first positioning pin is inserted through the side wall of the sleeve 10 and is screwed to the first pin hole, and the first positioning pin is located on a side of the limit gear ring 11 away from the bottom plate 102.
In an embodiment, the number of the first limit screws 101 is plural, any two adjacent first limit screws 101 are uniformly spaced along the circumference of the sleeve 10, the driving motor 13 is provided with a plurality of first threaded holes 132, and a first limit screw 101 is screwed in a first threaded hole 132.
Specifically, the number of the first limit screws 101 may be 2, 3, 4, 5, 6, 7 or 8, in this embodiment, the number of the first limit screws 101 is 8, 8 first limit screws 101 are uniformly spaced along the circumferential direction of the sleeve 10, and the number of the first threaded holes 132 is also 8. With this arrangement, the greater the number of first limit screws 101, the higher the stability of the mounting of the drive motor 13 on the sleeve 10. In other embodiments, the number of first limit screws 101 is one.
In an embodiment, the speed changing module further includes a retaining ring 14, the retaining ring 14 is disposed between the limit gear ring 11 and the driving motor 13, the rotating shaft 131 of the driving motor 13 is disposed through the retaining ring 14, one end of the driving motor 13, which is provided with the rotating shaft 131, abuts against the retaining ring 14, and one side of the limit gear ring 11, which faces the driving motor 13, abuts against the retaining ring 14.
Specifically, the retainer ring 14 is made of elastic material, the retainer ring 14 is arranged between the limit gear ring 11 and the driving motor 13, the limit gear ring 11 and the driving motor 13 clamp the retainer ring 14, and the retainer ring 14 is respectively abutted against the limit gear ring 11 and the driving motor 13, so that the transmission gear set 12 can be prevented from being separated from the limit gear ring 11 in the rotating process, and meanwhile, the elastic retainer ring 14 can reduce the vibration transmitted to the transmission gear set 12 by the driving motor 13. In other embodiments.
In one embodiment, the speed change gear set 12 includes a sun gear 121 and a plurality of planet gears 122, the plurality of planet gears 122 are evenly spaced along the circumference of the sun gear 121 and are all meshed with the sun gear 121, and the sun gear 121 is connected with the rotating shaft 131.
Specifically, the speed change gear set 12 further includes a rotating disc 123 and a plurality of mounting shafts 124, a sun gear 121 is disposed at a central position of the rotating disc 123, the plurality of mounting shafts 124 are uniformly spaced along a circumferential direction of the rotating disc 123, a planetary gear 122 is sleeved on one of the mounting shafts 124, and the plurality of planetary gears 122 are all meshed with the sun gear 121. This arrangement ensures the meshing stability of the sun gear 121 with the plurality of planetary gears 122, and the larger the number of planetary gears 122, the more uniformly the sun gear 121 can distribute the force to the respective planetary gears 122. In other embodiments, the transmission gear set 12 includes a sun gear 121 and a planet gear 122.
In one embodiment, the plurality of planet gears 122 each mesh with a plurality of teeth on the limit ring gear 11, respectively.
Specifically, each of the planetary gears 122 engages with a plurality of teeth of the limit ring gear 11, respectively, and rotates along the inner peripheral wall of the limit gear. The arrangement can ensure that the planetary gear 122 rotates along the inner peripheral wall of the limit gear ring 11, and the rotational stability of the planetary gear 122 is ensured.
In one embodiment, the number of the planetary gears 122 is four, and four planetary gears 122 are uniformly spaced along the circumference of the sun gear 121.
Specifically, with this arrangement, the sun gear 121 can distribute the force to the four planetary gears 122, reducing the force required to be loaded by each planetary gear 122, and ensuring the service life of the planetary gears 122. In other embodiments, the number of planet gears 122 is three.
In an embodiment, a limiting boss is arranged on one side of the sleeve 10 facing the limiting gear ring 11, a sliding groove is arranged on one side of the limiting gear ring 11 facing the sleeve 10, the sliding groove extends in the axial direction of the limiting gear ring 11 and is spaced from the plurality of teeth, and the limiting boss is inserted into the sliding groove in a matching manner.
Specifically, the limit boss is arranged on the bottom plate 102 and extends towards the limit gear ring 11, one side of the limit boss abuts against the inner peripheral wall of the sleeve 10, when the limit gear ring 11 is installed in the sleeve 10, the limit gear ring 11 moves along the axial direction of the sleeve 10, one side of the limit gear ring 11 abuts against the bottom plate 102, the limit boss is inserted into the sliding groove at the moment, and the limit boss can limit the limit gear ring 11 to rotate along the circumferential direction of the sleeve 10. The arrangement can increase the installation stability of the limit gear ring 11 and ensure the stable rotation of the speed change gear set 12. In other embodiments, the inner circumferential wall of the sleeve 10 is provided with a limiting groove, the limiting groove is arranged along the axial extension of the sleeve 10, the outer circumferential wall of the limiting gear ring 11 is provided with a limiting key, the limiting key is arranged to extend towards the limiting groove, and the limiting key is fittingly inserted into the limiting groove.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. An electric screwdriver, comprising:
the speed change module comprises a sleeve, a limit gear ring and a speed change gear set, wherein the limit gear ring is sleeved on the speed change gear set, a plurality of sequentially continuous tooth teeth are arranged on one side, facing the speed change gear set, of the limit gear ring, the plurality of tooth teeth on the limit gear ring are meshed with the speed change gear set, the limit gear ring is in close fit with the sleeve, and the outer peripheral wall of the limit gear ring is bonded to the inner peripheral wall of the sleeve; and
and the driving motor is provided with a rotating shaft, the rotating shaft is connected to one end of the speed change gear set, and the driving motor is used for driving the speed change gear set to rotate.
2. The electric screwdriver as claimed in claim 1, wherein the sleeve is provided with a mounting hole, the speed changing module further comprises a fixing member, a side of the limit gear ring facing the sleeve is provided with a fixing hole, the fixing hole extends in a radial direction of the limit gear ring and is spaced apart from the plurality of the engaging teeth, and the fixing member passes through the mounting hole and is fixed in the fixing hole.
3. The electric screwdriver as claimed in claim 1, wherein one end of the sleeve is provided with a bottom plate, one side of the limit gear ring abuts against the bottom plate, and one end of the driving motor provided with the rotation shaft abuts against the other side of the limit gear ring.
4. The electric screwdriver as claimed in claim 3, wherein the sleeve is further provided with a first limit screw, one end of the driving motor facing the limit gear ring is provided with a first threaded hole, the first threaded hole is located on the outer peripheral wall of the driving motor, the first limit screw penetrates through the side wall of the sleeve and is screwed with the first threaded hole, and the first limit screw is located on one side of the limit gear ring, which is far away from the bottom plate.
5. The electric screwdriver as claimed in claim 4, wherein the number of the first limit screws is plural, any two adjacent first limit screws are uniformly spaced along the circumference of the sleeve, the driving motor is provided with plural first threaded holes, and one first limit screw is screwed to one first threaded hole.
6. The electric screwdriver as claimed in claim 3, wherein the speed-changing module further comprises a retaining ring, the retaining ring is disposed between the limit gear ring and the driving motor, the rotating shaft of the driving motor is disposed through the retaining ring, one end of the driving motor, which is provided with the rotating shaft, abuts against the retaining ring, and one side of the limit gear ring, which faces the driving motor, abuts against the retaining ring.
7. The electric screwdriver as claimed in any one of claims 1 to 6, wherein said speed change gear set comprises a sun gear and a plurality of planetary gears, said plurality of planetary gears being uniformly spaced along a circumference of said sun gear and being engaged with said sun gear, said sun gear being connected with said rotary shaft.
8. The power screwdriver of claim 7 wherein each of said plurality of planet gears respectively engage a plurality of teeth on said limit ring gear.
9. The electric screwdriver as claimed in claim 8, wherein said planetary gears are four in number, and four of said planetary gears are uniformly spaced along a circumference of said sun gear.
10. The electric screwdriver as claimed in claim 1, wherein the sleeve is provided with a retaining boss at a side thereof facing the retaining ring gear, the retaining ring gear is provided with a sliding groove at a side thereof facing the sleeve, the sliding groove extends in an axial direction of the retaining ring gear and is spaced apart from the plurality of teeth, and the retaining boss is fittingly inserted into the sliding groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221654028.3U CN217728581U (en) | 2022-06-29 | 2022-06-29 | Electric screw driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221654028.3U CN217728581U (en) | 2022-06-29 | 2022-06-29 | Electric screw driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217728581U true CN217728581U (en) | 2022-11-04 |
Family
ID=83845377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221654028.3U Active CN217728581U (en) | 2022-06-29 | 2022-06-29 | Electric screw driver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217728581U (en) |
-
2022
- 2022-06-29 CN CN202221654028.3U patent/CN217728581U/en active Active
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