CN215059232U - Gearbox of linear actuator - Google Patents
Gearbox of linear actuator Download PDFInfo
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- CN215059232U CN215059232U CN202120626775.5U CN202120626775U CN215059232U CN 215059232 U CN215059232 U CN 215059232U CN 202120626775 U CN202120626775 U CN 202120626775U CN 215059232 U CN215059232 U CN 215059232U
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Abstract
The utility model provides a linear actuator's gear box belongs to the linear actuator field. The gear box includes gear box and is located the inside planetary gear train of gear box, planetary gear train includes planet wheel, cooperation the ring gear of planet wheel and loading the planet wheel carrier of planet wheel, the ring gear with be equipped with spacing arch on one of them of planet wheel carrier, another cooperation spacing arch is radial spacing the planet wheel carrier, the utility model has the advantages of, adopt this kind of structure, the beat range when can reducing planet wheel carrier and rotate.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a linear actuator's gear box belongs to the linear actuator field.
[ background of the invention ]
In general, a linear actuator includes a motor and a gear box, the motor is decelerated and driven by the gear box, wherein the gear box can be driven by a planetary gear train, the planetary gear train includes a sun gear, a planetary gear, an inner gear ring matching the planetary gear, and a planetary gear carrier loading the planetary gear, one side of the planetary gear is engaged with the sun gear, and the other side is engaged with the inner gear ring, so that the planetary gear can rotate around the sun gear, but when the planetary gear and the planetary gear carrier rotate, a gap between the planetary gear carrier and the inner gear ring is large, so that the planetary gear carrier is easy to generate deflection and collision when rotating.
[ Utility model ] content
The utility model aims to solve the technical problem that a gear box of linear actuator is provided for the beat range when can reducing the planet wheel carrier and rotate.
In order to solve the technical problem, the utility model discloses linear actuator's gear box includes gear box and is located the inside planetary gear train of gear box, planetary gear train includes planet wheel, cooperation the ring gear of planet wheel and load the planet wheel carrier of planet wheel, the ring gear with be equipped with spacing arch on one of them of planet wheel carrier, another cooperation spacing arch is radial spacing the planet wheel carrier.
Preferably, the planetary gear train is a two-stage planetary gear train, and the planetary gear carrier comprises a first planetary gear carrier and a second planetary gear carrier.
Preferably, one limiting protrusion is arranged on the inner gear ring to limit the first planet carrier or the second planet carrier in the radial direction.
Preferably, the inner gear ring is provided with two limiting protrusions for respectively radially limiting the first planetary gear carrier and the second planetary gear carrier, or the inner gear ring is provided with one limiting protrusion for radially limiting the first planetary gear carrier and the second planetary gear carrier.
Preferably, the first planet carrier and/or the second planet carrier are provided with the limiting protrusions.
Preferably, the two-stage planetary gear train further comprises a first sun gear and a second sun gear, and the second sun gear is connected with the first planetary gear carrier and drives the second planetary gear carrier to move.
Preferably, the second planet carrier axially extends out of a convex ring matched with the limiting bulge, the periphery of the convex ring is matched with the limiting bulge, the convex ring is sleeved outside the first planet carrier, and the limiting bulge is positioned between the first planet carrier and the second planet carrier.
Preferably, the inner wall of the convex ring is matched with the first planet carrier by adopting an inclined plane.
Preferably, the limiting protrusion is of a continuous or discontinuous annular structure.
Preferably, the limiting protrusion is located on the inner surface of the inner gear ring and protrudes towards the planet carrier.
The utility model has the advantages that:
firstly, carry out the transmission through the planetary gear train, can make linear actuator structure compacter, the transmission is more stable, secondly, set up spacing arch and can reduce the distance between planet wheel carrier and the ring gear, make spacing arch can restrict the radial motion of planet wheel carrier, thereby can reduce the beat range through the butt with spacing arch when making planet wheel carrier beat, and then can make planet wheel train in the operation process, no matter under the circumstances of any load, can all guarantee that the range of planet wheel carrier beat is less, when avoiding planet wheel carrier beat range great, the easy emergence collision of gear inside the planetary gear train.
These features and advantages of the present invention will be disclosed in more detail in the following detailed description and the accompanying drawings.
[ description of the drawings ]
The invention will be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of an electric motor and a gearbox according to a first embodiment;
FIG. 2 is a sectional view of a gear case according to the first embodiment;
FIG. 3 is a schematic view of an inner ring gear in a first embodiment;
FIG. 4 is a cross-sectional view of an inner ring gear of the first embodiment;
FIG. 5 is a schematic view of a second planetary carrier in accordance with the first embodiment;
FIG. 6 is a schematic diagram of a first planetary wheel carrier according to the first embodiment.
Reference numerals:
the planetary gear set comprises a gear box body 1, an inner gear ring 2, a first sun gear 3, a first planet gear 4, a first planet gear carrier 5, a second sun gear 6, a second planet gear 7, a second planet gear carrier 8, a limiting bulge 9 and a convex ring 10.
[ detailed description ] embodiments
The technical solutions of the embodiments of the present invention are explained and explained below with reference to the drawings of the embodiments of the present invention, but the embodiments described below are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the embodiment, other embodiments obtained by those skilled in the art without any creative work belong to the protection scope of the present invention.
In the following description, the terms "inside", "outside", "upper", "lower", "left", "right", and the like, which indicate orientations or positional relationships, are used to indicate orientations or positional relationships based on the drawings, and are only used for convenience in describing embodiments and simplifying the description, but do not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
The first embodiment is as follows:
as shown in fig. 1 to 6, a preferred structure of the gear box of the linear actuator of the present embodiment includes a gear box 1 and a planetary gear train located inside the gear box 1, where the planetary gear train includes planetary gears, an inner gear ring 2 engaged with the planetary gears, and a planetary carrier loaded with the planetary gears, one of the inner gear ring 2 and the planetary carrier is provided with a limit protrusion 9, and the other engages with the limit protrusion 9 to radially limit the planetary carrier.
The utility model has the advantages that:
firstly, carry out the transmission through the planetary gear train, can make linear actuator structure compacter, the transmission is more stable, secondly, set up spacing arch 9 and can reduce the distance between planet wheel carrier and ring gear 2, make spacing arch 9 can restrict the radial motion of planet wheel carrier, thereby can reduce the beat range through the butt with spacing arch 9 when making planet wheel carrier beat, and then can make planet wheel train in the operation process, no matter under the circumstances of any load, can guarantee that the range of planet wheel carrier beat is less, when avoiding planet wheel carrier beat range great, the easy emergence collision of the inside gear of planetary gear train.
In addition, because the planet carrier rotates relative to the inner gear ring 2 when the planetary gear train moves, a gap can exist between the planet carrier and the limiting protrusion 9 so as to prevent the planet carrier from wearing the limiting protrusion 9 when rotating.
In order to optimize the structure of the planetary gear train, in the present embodiment, it is preferable that the planetary gear train is a two-stage planetary gear train, the planetary gear train includes a first planetary gear train 5 and a second planetary gear train 8, and the two-stage planetary gear train is adopted for transmission, so that a large reduction ratio can be obtained, and at the same time, the linear actuator can be made more compact in structure, when the planetary gear train is a two-stage planetary gear train, the planetary gear includes a first planetary gear 4 and a second planetary gear 7, the first planetary gear 4 and the second planetary gear 7 share an inner gear ring 2, and at this time, the limit protrusion 9 can also limit the axial movement of the first planetary gear 4 and the second planetary gear 7, so that the whole gear box is more stable and compact.
In order to facilitate the production and processing of the ring gear 2, in this embodiment, it is preferable that the ring gear 2 is provided with one limiting protrusion 9 for radially limiting the first planet carrier 5 or the second planet carrier 8, and when the first planet carrier 5 or the second planet carrier 8 is radially limited by one limiting protrusion 9 as compared with the two limiting protrusions 9 which are respectively radially limited by the first planet carrier 5 and the second planet carrier 8, the ring gear 2 has a simpler structure and is more convenient to produce and process, and when the first planet carrier 5 and the second planet carrier 8 are radially limited by one limiting protrusion 9 as compared with the case where the first planet carrier 5 or the second planet carrier 8 is radially limited by one limiting protrusion 9, the contact area between the limiting protrusion 9 and the first planet carrier 5 or the second planet carrier 8 is larger and more stable in limitation, and when the contact areas are the same, the volume of the limiting bulge 9 in the embodiment is smaller, so that the production and the processing of the inner gear ring 2 are more convenient.
In order to make the first planet carrier 5 and the second planet carrier 8 capable of limiting mutually, in this embodiment, it is preferable that the two-stage planetary gear train further includes a first sun gear 3 and a second sun gear 6, the second sun gear 6 is connected with the first planet carrier 5 and drives the second planet carrier 8 to move, at this time, the limiting protrusion 9 may only limit the first planet carrier 5 or the second planet carrier 8, the second sun gear 6 is engaged with the second planet gear 7 so as to make the first planet carrier 5 and the second planet carrier 8 limit mutually, that is, the first planet carrier 5 or the second planet carrier 8 can limit mutually through the teeth between the second sun gear 6 and the second planet gear 7, so that the first planet carrier 5 or the second planet carrier 8 can both realize limiting, and at the same time, the second planet carrier 8 can be further provided with a limiting hole penetrating through the second sun gear 6, one end of the second sun gear 6 close to the first planet carrier 5 may be provided with a protrusion matched with the inner surface of the limiting hole, the first planet carrier 5 or the second planet carrier 8 is limited by the mutual limitation between the protrusion and the limiting hole, the second sun gear 6 includes a spindle, or a spindle hole for inserting the spindle of the second sun gear 6 is provided on the second planet carrier 8, and the first planet carrier 5 or the second planet carrier 8 is limited by the mutual limitation between the spindle hole and the spindle.
In order to improve the limiting effect of the limiting protrusion 9, in this embodiment, it is preferable that the second planet carrier 8 axially extends a convex ring 10 matched with the limiting protrusion 9, the periphery of the convex ring 10 is matched with the limiting protrusion 9, the convex ring 10 is sleeved outside the first planet carrier 5, the limiting protrusion 9 is located between the first planet carrier 5 and the second planet carrier 8, and the limiting protrusion 9 is located between the first planet carrier 5 and the second planet carrier 8, which means that the interface between the first planet carrier 5 and the second planet carrier 8 just bisects the limiting protrusion 9 into two equal parts, by adopting such a structure, firstly, the second planet carrier 8 axially extends the convex ring 10, so that the second planet carrier 8 and the limiting protrusion 9 have a larger contact area, and the convex ring 10 is sleeved outside the first planet carrier 5, the radial movement of the first planet carrier 5 can be further limited by the convex ring 10, so that the first planet carrier 5 and the second planet carrier 8 can be limited mutually, in addition, the limiting bulge 9 is positioned between the first planet carrier 5 and the second planet carrier 8, the stress of the first planet carrier 5 and the second planet carrier 8 can be more uniform, and the limiting effect of the limiting bulge 9 can be better.
In order to further optimize the structures of the convex ring 10 and the first planet carrier 5, in this embodiment, it is preferable that the inner wall of the convex ring 10 and the first planet carrier 5 are in inclined surface fit, that is, the inner wall of the convex ring 10 is provided with a first inclined surface, the outer wall of the first planet carrier 5 is provided with a second inclined surface matched with the first inclined surface, and by matching the first inclined surface and the second inclined surface, the convex ring 10 can be sleeved outside the first planet carrier 5 to limit the first planet carrier 5, and when the second sun gear 6 on the first planet carrier 5 is mounted on the second planet carrier 8, the mounting position can be adjusted by the inclined surface, so that a certain mounting error can be compatible, and the planetary gear train can be mounted more conveniently and stably.
In order to optimize the structure of the limiting protrusion 9, it is preferable that the limiting protrusion 9 is a continuous or intermittent annular structure, and the limiting protrusion 9 is an annular structure, so that the limiting protrusion 9 is sleeved outside the convex ring 10 and can have a larger contact area with the convex ring 10, and the convex ring 10 can limit the limiting protrusion 9 in the circumferential direction.
In order to enable the limiting protrusions 9 to better limit the radial motion of the planet carrier, in this embodiment, it is preferable that the limiting protrusions 9 are located on the inner surface of the inner ring gear 2 and protrude toward the planet carrier, at this time, the planet carrier can lean against the limiting protrusions 9 on the inner wall of the inner ring gear 2 when swinging, so that the limiting protrusions 9 can better limit the radial motion of the planet carrier.
Example two:
the difference between this embodiment and the first embodiment is that, in this embodiment, the two limiting protrusions 9 are disposed on the inner gear ring 2 to respectively radially limit the first carrier 5 and the second carrier 8, and the two limiting protrusions 9 respectively radially limit the first carrier 5 and the second carrier 8, so that the first carrier 5 and the second carrier 8 have smaller deflection amplitude and are more stably mounted.
Example three:
the difference between this embodiment and the first embodiment is that, in this embodiment, one limiting protrusion 9 is disposed on the inner gear ring 2, and the first carrier 5 and the second carrier 8 are radially limited, by adopting this structure, the limiting protrusion 9 can be located between the first carrier 5 and the second carrier 8, so that one side of the limiting protrusion 9 limits the first carrier 5 and the other side limits the second carrier 8, and this embodiment can also achieve the technical effects described in the first embodiment.
Example four:
the difference between this embodiment and the first embodiment is that, in this embodiment, the limiting protrusions 9 are disposed on the first carrier 5 and/or the second carrier 8, and with this structure, the limiting protrusions 9 on the first carrier 5 and/or the second carrier 8 can cooperate with the inner gear ring 2 to limit the radial movement of the first carrier 5 and the second carrier 8.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the drawings and the above specific embodiments. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.
Claims (10)
1. A gearbox of a linear actuator, comprising a gearbox casing and a planetary gear train positioned inside the gearbox casing, wherein the planetary gear train comprises planet gears, an inner gear ring matched with the planet gears and a planet gear carrier loaded with the planet gears, and the gearbox is characterized in that: one of the inner gear ring and the planet wheel carrier is provided with a limiting bulge, and the other one of the inner gear ring and the planet wheel carrier is matched with the limiting bulge to limit the planet wheel carrier in the radial direction.
2. A gear box of a linear actuator as set forth in claim 1, wherein: the planetary gear train is a two-stage planetary gear train, and the planetary gear carrier comprises a first planetary gear carrier and a second planetary gear carrier.
3. A gear box of a linear actuator as set forth in claim 2, wherein: the inner gear ring is provided with one limiting bulge for radially limiting the first planet carrier or the second planet carrier.
4. A gear box of a linear actuator as set forth in claim 2, wherein: the inner gear ring is provided with two limiting protrusions which are used for radially limiting the first planetary gear carrier and the second planetary gear carrier respectively, or the inner gear ring is provided with one limiting protrusion which is used for radially limiting the first planetary gear carrier and the second planetary gear carrier simultaneously.
5. A gear box of a linear actuator as set forth in claim 2, wherein: the first planet carrier and/or the second planet carrier are/is provided with the limiting bulges.
6. A gearbox for a linear actuator as defined in any one of claims 2 to 5, wherein: the two-stage planetary gear train also comprises a first sun gear and a second sun gear, and the second sun gear is connected with the first planetary gear carrier and drives the second planetary gear carrier to move.
7. A gearbox for a linear actuator as defined in claim 6 wherein: and a convex ring matched with the limiting bulge extends out of the second planet wheel carrier in the axial direction, the periphery of the convex ring is matched with the limiting bulge, the convex ring is sleeved outside the first planet wheel carrier, and the limiting bulge is positioned between the first planet wheel carrier and the second planet wheel carrier.
8. A gearbox for a linear actuator as defined in claim 7, wherein: the inner wall of the convex ring is matched with the first planet carrier by adopting an inclined plane.
9. A gearbox for a linear actuator as defined in claim 7, wherein: the limiting bulge is of a continuous or discontinuous annular structure.
10. A gear box of a linear actuator as set forth in claim 1, wherein: the limiting protrusion is located on the inner surface of the inner gear ring and protrudes towards the planet carrier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120626775.5U CN215059232U (en) | 2021-03-29 | 2021-03-29 | Gearbox of linear actuator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120626775.5U CN215059232U (en) | 2021-03-29 | 2021-03-29 | Gearbox of linear actuator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215059232U true CN215059232U (en) | 2021-12-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120626775.5U Active CN215059232U (en) | 2021-03-29 | 2021-03-29 | Gearbox of linear actuator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215059232U (en) |
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2021
- 2021-03-29 CN CN202120626775.5U patent/CN215059232U/en active Active
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