CN216131353U - Worm gear case structure - Google Patents
Worm gear case structure Download PDFInfo
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- CN216131353U CN216131353U CN202122010205.6U CN202122010205U CN216131353U CN 216131353 U CN216131353 U CN 216131353U CN 202122010205 U CN202122010205 U CN 202122010205U CN 216131353 U CN216131353 U CN 216131353U
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Abstract
The utility model relates to a worm gear case structure, which comprises an upper cover, a bottom case, an outer rotor motor and a gear chain, wherein the outer rotor motor and the gear chain are arranged between the upper cover and the bottom case; wherein: the stator shaft sleeve is formed with a bearing seat at the end part exposed out of the rotor shell, a bearing is arranged in the bearing seat, and the bearing and the motor shaft are positioned by virtue of the bearing; the bearing seat is radially connected with a pair of fixing lugs which are directly locked on the bottom shell; the motor shaft at one side of the bottom of the rotor shell is placed on the shaft seat of the bottom shell through a bearing and locked by a shaft cover, the rotor shell is suspended, and a movement gap is reserved between the motor shaft and the bottom shell as well as between the motor shaft and the upper cover. The worm gear box adopts the outer rotor motor as power, and is positioned on the bottom shell through the stator shaft sleeve and the motor shaft, so that the rotor shell is conveniently suspended between the upper cover and the bottom shell, and the running is not interfered and the safety is ensured; the introduction of the outer rotor motor realizes the characteristics of small volume and large torque output especially on small-sized and miniature massage equipment.
Description
The technical field is as follows:
the utility model belongs to the technical field of massage equipment, and particularly relates to a worm gear case structure, in particular to a speed change mechanism adopting a brushless outer rotor motor as a power source, which is applied to the field of massage equipment and has the characteristics of small volume and strong power.
Background art:
the brushless outer rotor motor is widely applied to equipment such as a fan and the like for driving external rotation, and is the best choice of power, but most of the equipment needing to be driven through an output shaft needs to protect the rotating outer rotor, so that a housing is ideally arranged on the outer side of the outer rotor in an additional mode, and the operation safety is guaranteed. Such as:
CN200720057669.X discloses an outer rotor DC brushless motor, its structure includes the casing, casing one side is connected with the end cover, and the housing is connected to the other end, and the fan housing is connected to the casing below, the end cover is fixed in the fan housing, is connected with the axis of rotation through the bearing between casing and the end cover, the end cover is fixed with stator module, be fixed with the rotor subassembly in the axis of rotation, set up the bearing room respectively at the axis of rotation both ends in the casing, the bearing is fixed in the bearing room. The technology mainly solves the manufacturing cost, and the method of adding the shell outside the outer rotor brings convenience to use.
How to provide a specific application structure of an outer rotor motor is the object of the research of the utility model.
The utility model content is as follows:
the utility model aims to design a worm gear case structure which adopts an outer rotor motor as power and is arranged on a bottom case through a motor shaft and a stator shaft sleeve.
The technical scheme of the utility model is realized as follows: a worm gear case structure comprises an upper cover, a bottom case, an outer rotor motor and a gear chain, wherein the outer rotor motor and the gear chain are arranged between the upper cover and the bottom case; the outer rotor motor comprises a motor shaft, a rotor shell fixed with a magnet, a stator shaft sleeve, an iron core wound with a winding and a controller circuit board, wherein the stator shaft sleeve fixed with the iron core is positioned on the motor shaft through a bearing, and the motor shaft is fixed with the rotor shell and is in transmission connection with a gear chain; the method is characterized in that: the stator shaft sleeve is formed with a bearing seat at the end part exposed out of the rotor shell, a bearing is arranged in the bearing seat, and the bearing and the motor shaft are positioned by virtue of the bearing; the bearing seat is radially connected with a pair of fixing lugs in a connecting manner, and the fixing lugs are directly locked on the bottom shell to form supporting and positioning of one end of the outer rotor motor; the motor shaft at one side of the bottom of the rotor shell is placed on the shaft seat of the bottom shell through a bearing and locked by a shaft cover to form supporting and positioning at the other end of the outer rotor motor, the rotor shell is suspended, and a movement gap is reserved between the motor shaft and the bottom shell and between the motor shaft and the upper cover.
The bottom of the rotor shell is provided with a vent hole.
The motor shaft respectively extends out of the rotor shell and the stator shaft sleeve to form a double-end output structure, worms are arranged at two ends of the motor shaft and respectively drive a group of gear chains through worm gears, and the two groups of gear chains are symmetrically distributed on the bottom shell; the final gear shaft of the gear chain is an output shaft and is used for driving the massage head to rotate.
The worm is directly machined by a motor shaft; or a worm is fixed through a coupling; or a worm sleeve is sleeved on the motor shaft.
The worm is provided with a conflict worm wheel on the corresponding side of the worm wheel, and the conflict worm wheel and the worm wheel are coaxially positioned between the upper cover and the bottom shell.
And the controller circuit board is locked on a bearing seat of the stator shaft sleeve.
The tangent parts of the upper cover and the bottom shell and the rotor shell are provided with windows, and the rotor shell can be embedded into the windows.
The worm gear box adopts the outer rotor motor as power, and is positioned on the bottom shell through the stator shaft sleeve and the motor shaft, so that the rotor shell is conveniently suspended between the upper cover and the bottom shell, and the running is not interfered and the safety is ensured; the introduction of the outer rotor motor realizes the characteristics of small volume and large torque output especially on small-sized and miniature massage equipment.
Description of the drawings:
the utility model is further illustrated with reference to the following specific figures:
FIG. 1 is a schematic view of a worm gear case
FIG. 2 is a schematic sectional view of a worm gear case
FIG. 3 is an exploded view of a worm gear case
Wherein
1-upper cover 11-window 2-bottom shell 21-bolt column
22-shaft seat 23-shaft cover 3-outer rotor motor 31-motor shaft
311-worm 32-rotor shell 321-vent 33-stator shaft sleeve
331-bearing seat 332-fixing lug 34-iron core 35-controller circuit board
4-gear chain 41-output shaft 42-worm wheel 43-interference worm wheel
The specific implementation mode is as follows:
referring to fig. 1, 2 and 3, the worm gear case structure includes an upper cover 1, a bottom case 2, an outer rotor motor 3 and a gear train 4; the outer rotor motor 3 and the gear chain 4 are arranged in a space enclosed by the upper cover 1 and the bottom shell 2, wherein the gear chain 4 has the function of speed change and can adjust the position of the output shaft 41; each gear in the gear train 4 is positioned on the upper cover and the bottom case by a gear shaft, and only a shaft as a driving load passes through the upper cover 1 or the bottom case 2, which is referred to as an output shaft 41. According to the requirement, one worm gear box can be provided with double output shafts, most commonly a pair of output shafts, and can drive two massage heads to form kneading action, and if necessary, four output shafts can be designed to form the requirement of larger-area massage, which is also the conventional practice.
The outer rotor motor 3 comprises a motor shaft 31, a rotor shell 32 fixed with a magnet, a stator shaft sleeve 33, an iron core 34 wound with a winding and a controller circuit board 35; the stator shaft sleeve 33 is formed with a bearing seat 331 at the end exposed outside the rotor case, and a bearing 5 is installed in the bearing seat 331, and is positioned with the motor shaft 31 by the bearing 5; the bearing seat 331 is radially connected with a pair of fixing lugs 332 and is directly locked on the bottom shell 2 through the fixing lugs 332; the bottom shell 2 is formed with bolt posts 21 at this end, the fixing lugs 332 being locked by the bolt posts 21, and the gaps between the bolt posts 21 for ventilation. The outer rotor motor 3 forms a supporting location of one end by means of a bearing seat 331 on the stator shaft sleeve; the motor shaft 31 at one side of the bottom of the rotor shell 32 is placed on the shaft seat 22 of the bottom shell through a bearing 5 and locked by a shaft cover 23 to form a supporting and positioning of the other end of the outer rotor motor 3, so that the rotor shell 32 is suspended, and a movement gap is reserved between the rotor shell and the bottom shell 2 and the upper cover 1, and a heat dissipation channel is also formed. The bottom of the rotor housing 32 is provided with a vent hole 321 for communicating external air with an internal air gap and communicating air at the opening end of the rotor housing to take away heat, and is also beneficial to heat dissipation of the built-in controller circuit board 35, and the controller circuit board 35 is locked on the bearing seat 331 of the stator shaft sleeve, more precisely, on the inner end surface of the bearing seat 331 in an extending structure.
The shaft cover 23 single structure is convenient to assemble, overhaul and maintain, but the shaft cover 23 is not required to be directly formed with the upper cover 1 in a connected mode, namely the shaft cover structure and the position are well fixed when an upper cover mould is designed, and one-step assembly can be reduced.
Further, the motor shaft 31 extends out of the rotor shell 32 and the stator shaft sleeve 33 respectively to form a double-head output structure, the two ends of the motor shaft are provided with worms 311, the worm gears 42 drive a group of gear chains 4 respectively, and the two groups of gear chains 4 are symmetrically distributed on the bottom shell 2; the final gear shaft of the gear chain 4 is an output shaft 41 which is used for driving the massage head to rotate. The worm 311 is directly machined by the motor shaft 31; or a worm is fixed through a coupling; or a worm sleeve is sleeved on the motor shaft.
Further, the worm 311 is provided with an interference worm wheel 43 at a side corresponding to the worm wheel 42, and the interference worm wheel 43 is positioned between the upper cover 1 and the bottom case 2 as the worm wheel 42 is. The worm gear 43 is abutted, so that the transmission efficiency can be improved, and the possibility of slippage between the worm and the worm gear is reduced.
The worm gear box structure is an assembly space of the worm gear and the gear chain 4, and provides an installation scheme for safe operation of the outer rotor motor 3, wherein the upper cover 1 and the tangent part of the bottom shell 2 and the rotor shell 32 can be provided with a window 11, the rotor shell 32 can be embedded into the window 11, the thickness of the tangent part is avoided, and the worm gear box can be designed to be thinner.
Claims (7)
1. A worm gear case structure comprises an upper cover, a bottom case, an outer rotor motor and a gear chain, wherein the outer rotor motor and the gear chain are arranged between the upper cover and the bottom case; the outer rotor motor comprises a motor shaft, a rotor shell fixed with a magnet, a stator shaft sleeve, an iron core wound with a winding and a controller circuit board, wherein the stator shaft sleeve fixed with the iron core is positioned on the motor shaft through a bearing, and the motor shaft is fixed with the rotor shell and is in transmission connection with a gear chain; the method is characterized in that: the stator shaft sleeve is formed with a bearing seat at the end part exposed out of the rotor shell, a bearing is arranged in the bearing seat, and the bearing and the motor shaft are positioned by virtue of the bearing; the bearing seat is radially connected with a pair of fixing lugs in a connecting manner, and the fixing lugs are directly locked on the bottom shell to form supporting and positioning of one end of the outer rotor motor; the motor shaft at one side of the bottom of the rotor shell is placed on the shaft seat of the bottom shell through a bearing and locked by a shaft cover to form supporting and positioning at the other end of the outer rotor motor, the rotor shell is suspended, and a movement gap is reserved between the motor shaft and the bottom shell and between the motor shaft and the upper cover.
2. The worm-gear case structure according to claim 1, wherein: the bottom of the rotor shell is provided with a vent hole.
3. The worm-gear case structure according to claim 1, wherein: the motor shaft respectively extends out of the rotor shell and the stator shaft sleeve to form a double-end output structure, worms are arranged at two ends of the motor shaft, a group of gear chains are respectively driven by a worm wheel, and the two groups of gear chains are symmetrically distributed on the bottom shell; the final gear shaft of the gear chain is an output shaft and is used for driving the massage head to rotate.
4. A worm-gear case structure according to claim 3, wherein: the worm is directly processed by a motor shaft; or a worm is fixed through a coupling; or a worm sleeve is sleeved on the motor shaft.
5. A worm-gear case structure according to claim 3, wherein: the worm is also provided with a conflict worm wheel at the corresponding side of the worm wheel, and the conflict worm wheel and the worm wheel are coaxially positioned between the upper cover and the bottom shell.
6. The worm-gear case structure according to claim 1, wherein: the controller circuit board is locked on the bearing seat of the stator shaft sleeve.
7. The worm-gear case structure according to claim 1, wherein: the tangent parts of the upper cover and the bottom shell and the rotor shell are provided with windows, and the rotor shell can be embedded into the windows.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010205.6U CN216131353U (en) | 2021-08-25 | 2021-08-25 | Worm gear case structure |
| TW111131959A TWI831341B (en) | 2021-08-25 | 2022-08-24 | Driving mechanism for shoulder and neck massager |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122010205.6U CN216131353U (en) | 2021-08-25 | 2021-08-25 | Worm gear case structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216131353U true CN216131353U (en) | 2022-03-25 |
Family
ID=80771539
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122010205.6U Active CN216131353U (en) | 2021-08-25 | 2021-08-25 | Worm gear case structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216131353U (en) |
-
2021
- 2021-08-25 CN CN202122010205.6U patent/CN216131353U/en active Active
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