CN210113357U - Automatic door opener and transmission mechanism thereof - Google Patents
Automatic door opener and transmission mechanism thereof Download PDFInfo
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- CN210113357U CN210113357U CN201920459853.XU CN201920459853U CN210113357U CN 210113357 U CN210113357 U CN 210113357U CN 201920459853 U CN201920459853 U CN 201920459853U CN 210113357 U CN210113357 U CN 210113357U
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- automatic door
- transmission shaft
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- door opener
- bearing
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Abstract
The utility model discloses an automatic door operator and drive mechanism thereof. The utility model provides a transmission mechanism of an automatic door opener, which comprises a planetary reducer driven by a motor and a transmission shaft driven by the planetary reducer; the planetary reducer comprises a shell and a planetary gear train arranged in the shell, wherein the planetary gear train comprises a final-stage planet carrier used for outputting torque, and a torque output hole is formed in the center of the final-stage planet carrier; the first end of the transmission shaft is detachably inserted into the torque output hole and is connected with the torque output hole in a non-rotatable mode, and the second end of the transmission shaft extends out of the shell. The utility model provides an automatic drive mechanism of door operator is favorable to the miniaturized design of automatic door operator.
Description
Technical Field
The utility model relates to an automatic door operator and drive mechanism thereof.
Background
The automatic door opener is widely applied to the field of automatic door opening and closing, and comprises a rocker arm connecting shaft for outputting torque, wherein the rocker arm connecting shaft is connected with a rocker arm system positioned outside the automatic door opener, and the rocker arm system is connected with a door. When the automatic door opener works, the rocker arm connecting shaft can be controlled to rotate forwards or reversely, so that the rocker arm system is controlled to drive the door to open and close.
A typical power-driven transmission mechanism of an automatic door opening machine includes a planetary gear unit driven by a motor and a transmission shaft driven by the planetary gear unit. The planetary reducer includes a housing, a planetary gear train mounted in the housing, and an output shaft extending from the housing. The output shaft of the planetary reducer is constructed integrally with the final planetary carrier in the planetary gear train, and the final planetary carrier outputs torque to the outside through the output shaft to transmit the torque to the transmission shaft completely located outside the casing of the planetary reducer. When the automatic door opener works, the torque output by the motor is transmitted to the planetary reducer and then output from the output shaft of the planetary reducer, the output shaft of the planetary reducer is connected with the transmission shaft in a non-relative-rotating mode through a coupler arranged outside the planetary reducer shell, and the transmission shaft transmits the torque to the rocker arm connecting shaft directly or indirectly through a middle part. The transmission mechanism needs to occupy larger axial space, and is not beneficial to the miniaturization design of the automatic door opener.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an automatic drive mechanism of door operator to be favorable to the miniaturized design of automatic door operator.
One aspect of the utility model provides a transmission mechanism of an automatic door opener, which comprises a planetary reducer driven by a motor and a transmission shaft driven by the planetary reducer; the planetary speed reducer comprises a shell and a planetary gear train arranged in the shell, wherein the planetary gear train comprises a final-stage planet carrier used for outputting torque, and a torque output hole is formed in the center of the final-stage planet carrier; the first end of the transmission shaft is detachably inserted into the torque output hole and is connected with the torque output hole in a non-relative-rotation mode, and the second end of the transmission shaft extends out of the shell.
Further, the first end of the transmission shaft is provided with a first tangent plane, the torque output hole is provided with a second tangent plane, and the first tangent plane and the second tangent plane are combined to limit the relative rotation of the transmission shaft and the torque output hole.
Further, the drive shaft is configured as a bevel gear shaft, a lead screw or a worm screw.
Further, the transmission shaft is sleeved with at least one bearing, and the bearing is arranged close to the first end of the transmission shaft and is supported by a bearing seat arranged on the shell.
Further, the at least one bearing includes at least one pair of angular contact ball bearings disposed adjacent to each other.
Furthermore, a first step for limiting the outer ring of the first end of the bearing is arranged on the inner wall of the bearing seat, and the bearing seat is in threaded connection with a ring-shaped element for limiting the outer ring of the second end of the bearing; a nut is screwed on the transmission shaft, and a check ring is arranged between the nut and the inner ring of the first end of the bearing; the transmission shaft is provided with a shaft shoulder for limiting the inner ring of the second end of the bearing.
Further, the nut is provided with a radial hole, and a set screw used for abutting against the transmission shaft is installed in the radial hole.
Further, the planetary gear train further includes: the planetary gear set comprises a primary sun gear, a primary planet carrier, a secondary sun gear and a secondary planet gear; an output shaft of the motor is connected with the primary sun gear, and the primary planet gear is arranged on the primary planet carrier and meshed with the primary sun gear; the secondary sun gear is attached to the primary planet carrier or is integrally formed therewith, the secondary sun gear meshes with the secondary planet gears, which are mounted on the final planet carrier.
Furthermore, a through hole is formed in the center of the first-stage planet carrier, a pin shaft mounting hole is formed in the center of the first end face of the transmission shaft, and a pin shaft is mounted in the through hole and the pin shaft mounting hole.
The utility model provides an automatic transmission of door operator, through the structure that designs planetary reducer into not disposing the output shaft, but set up the moment of torsion delivery outlet at the center of final stage planet carrier, be connected the transmission shaft with the moment of torsion delivery outlet of final stage planet carrier directly can not rotate relatively, can save the shaft coupling that is used for connecting planetary reducer and transmission shaft, the structure of automatic door operator has been simplified, be favorable to shortening the axial length of automatic door operator, and then be favorable to the miniaturized design of automatic door operator, and can save the cost.
The utility model discloses an another aspect provides an automatic door opener, and this automatic door opener is provided with foretell automatic door opener's drive mechanism.
Drawings
Fig. 1 schematically illustrates an exploded view of a transmission mechanism of an automatic door opener according to an embodiment of the present invention; and the number of the first and second groups,
fig. 2 schematically shows a cross-sectional view of a transmission mechanism of an automatic door opener according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 and fig. 2, an exploded view and a sectional view of a transmission mechanism of an automatic door opener according to an embodiment of the present invention are shown. The transmission mechanism of the automatic door opener comprises a planetary reducer 2 driven by a motor 1 and a transmission shaft 3. The motor 1 may be any type of motor that can be rotated in forward and reverse directions. The planetary gear reducer 2 includes a housing 20 and a planetary gear train mounted in the housing 20, the planetary gear train including a final stage carrier 27 for outputting torque, a torque output hole 270 being provided at the center of the final stage carrier 27. The first end of the propeller shaft 3 is detachably inserted into the torque output opening 270 and is connected to the torque output opening 270 in a rotationally fixed manner, so that the final planetary carrier 27 rotates together with the propeller shaft 3. The second end of the drive shaft 3 protrudes out of the housing 20.
The planetary reducer 2 may be a primary planetary reducer, a secondary planetary reducer, or a more-stage planetary reducer. It should be noted that the final stage carrier in this document refers to the carrier in the final stage planetary gear train. Specifically, for example, the one-stage planetary gear reducer has only one-stage planetary gear train, and its one-stage carrier and the final-stage carrier are the same carrier. The two-stage planetary reducer comprises a two-stage planetary gear train, and a second-stage planetary carrier of the two-stage planetary reducer forms a final-stage planetary carrier. Similarly, it can be understood that the multi-stage planetary reducer includes a multi-stage planetary gear train, and the carrier in the last stage planetary gear train forms the last stage carrier.
The planetary gear reducer 2 in this embodiment is a two-stage planetary gear reducer, and the planetary gear train thereof includes a primary sun gear 21, a primary planet gear 22, a primary planet carrier 23, a secondary sun gear 25, and a secondary planet gear 26 in addition to the above-described final planet carrier 27. The output shaft 11 of the motor 1 is connected with a primary sun gear 21, and a primary planet gear 22 is mounted on a primary planet carrier 23 and meshed with the primary sun gear 21. The secondary sun gear 25 is attached to or integrally formed with the primary planet carrier 23, the secondary sun gear 25 meshes with the secondary planet gears 26, and the secondary planet gears 26 are mounted on the final planet carrier 27. It will be appreciated that the final planet carrier 27 is the second planet carrier of the second planetary reduction gear.
The drive shaft 3 may be a bevel gear shaft, a worm or a lead screw. When the transmission shaft 3 is a bevel gear shaft, a bevel gear part is arranged on a rocker arm connecting shaft (not shown in the figure) of the automatic door opening machine, the axis of the transmission shaft 3 is vertical to the axis of the rocker arm connecting shaft, and a bevel gear of the transmission shaft 3 is meshed and matched with the bevel gear part of the rocker arm connecting shaft. When the transmission shaft 3 is a worm, a worm wheel part meshed with the worm is arranged on the rocker arm connecting shaft.
In the present embodiment, the transmission shaft 3 preferably employs a lead screw. At this time, the transmission mechanism of the automatic door opener may further include a lead screw nut 8 screwed with the lead screw and a rack (not shown in the drawing) non-rotatably connected with the lead screw nut 8. The axis of the rocker arm connecting shaft (not shown in the figure) of the automatic door opener is vertical to the axis of the transmission shaft 3, and the rocker arm connecting shaft is provided with a gear part engaged with the rack. When the automatic door opening machine works, the rotation output by the motor 1 is transmitted to the transmission shaft 3 through the planetary reducer 2, the rotation of the transmission shaft 3 is converted into the axial movement of the rack through the lead screw transmission mechanism, and the axial movement of the rack is converted into the rotation of the rocker arm connecting shaft through the rack and gear transmission mechanism. As is known in the art, the rocker arm connecting shaft is used in connection with a rocker arm system for operating the opening and closing of the door by the rocker arm system.
The transmission mechanism of the automatic door opener provided by the embodiment, through designing planetary reducer 2 into the structure of not configuring the output shaft, but set up torque output hole 270 at the center of last stage planet carrier 27, torque output hole 270 lug connection with transmission shaft 3 and last stage planet carrier 27, can save the shaft coupling that is used for connecting planetary reducer 2 and transmission shaft 3, the structure of the automatic door opener is simplified, be favorable to shortening the axial length of the automatic door opener, and then be favorable to the miniaturized design of the automatic door opener, and can save the cost.
There are various ways of achieving a non-rotatable connection of the first end of the propeller shaft 3 to the torque output opening 270. In a manner not shown, for example, the torque output bore 270 and the propeller shaft 3 may be splined. Preferably, in the present embodiment, at least one first cut surface 31 is provided at the first end of the transmission shaft 3, and the torque output hole 270 is provided with at least one second cut surface (not shown), and the first cut surface 31 and the second cut surface are engaged to limit the relative rotation of the transmission shaft 3 and the torque output hole 270.
In addition, in order to form a reliable bearing for the first end of the transmission shaft 3 to ensure the operation accuracy and the operation reliability of the transmission shaft 3, at least one bearing 4 for supporting the transmission shaft 3 is sleeved on the transmission shaft 3. As can be seen in fig. 2, the bearing 4 is arranged near a first end of the drive shaft 3 and is supported by a bearing block 40 mounted on the housing 20. The bearing 4 may be a ball bearing, a roller bearing or other type of bearing. Preferably, in order to enable the transmission shaft 3 to withstand a large axial load, the bearing 4 comprises at least one pair of angular contact ball bearings arranged adjacently. In the present embodiment in particular, the bearing 4 comprises a pair of angular contact ball bearings arranged next to each other.
Fig. 2 shows a preferred embodiment of an axial limit structure for the pair of angular contact ball bearings. Specifically, the inner wall of the bearing seat 40 is provided with a first step 401 for limiting the outer ring of the first end of the bearing 4, and the bearing seat 40 is screwed with a ring-shaped element 5 for limiting the outer ring of the second end of the bearing 4, wherein the ring-shaped element 5 abuts against the end face of the outer ring of the second end of the bearing 4. The transmission shaft 3 is screwed with a nut 61, a retainer ring 62 is arranged between the nut 61 and the inner ring of the first end of the bearing 4, and the retainer ring 62 is abutted against the end face of the inner ring of the first end of the bearing 4. The drive shaft 3 is further provided with a shoulder 32 for limiting the inner race of the second end of the bearing 4. In addition, in order to avoid the loose connection of nut 61 with drive shaft 3, nut 61 is preferably provided with a radial hole 610, and a set screw (not shown in the figure) for abutting against drive shaft 3 is mounted in radial hole 610.
Referring again to fig. 2, the primary planet carrier 23 and the secondary sun gear 25 are preferably constructed as a unitary structure. A through hole (not numbered) is formed in the center of the first-stage planet carrier 23, a pin shaft mounting hole (not numbered) is formed in the center of the first end face of the transmission shaft 3, and a pin shaft 7 is mounted in the through hole and the pin shaft mounting hole. The pin 7 serves to center the drive shaft 3 and does not serve to restrict relative rotation between the secondary sun gear 25 and the drive shaft 3.
The embodiment of the utility model provides an automatic door opener is still provided, this automatic door opener is provided with foretell automatic door opener's drive mechanism.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A transmission mechanism of an automatic door opener comprises a planetary reducer (2) driven by a motor (1) and a transmission shaft (3) driven by the planetary reducer (2); it is characterized in that the preparation method is characterized in that,
the planetary reducer (2) comprises a shell (20) and a planetary gear train mounted in the shell (20), wherein the planetary gear train comprises a final-stage planet carrier (27) for outputting torque, and a torque output hole (270) is formed in the center of the final-stage planet carrier (27);
the first end of the transmission shaft (3) is detachably inserted into the torque output hole (270) and is connected with the torque output hole (270) in a non-rotatable mode, and the second end of the transmission shaft (3) extends out of the shell (20).
2. The transmission mechanism of an automatic door opener according to claim 1, wherein the first end of the transmission shaft (3) is provided with a first cut surface (31), the torque output hole (270) is provided with a second cut surface, and the first cut surface (31) and the second cut surface are engaged to limit the relative rotation of the transmission shaft (3) and the torque output hole (270).
3. The transmission mechanism of an automatic door opener according to claim 1 or 2, characterized in that the transmission shaft (3) is configured as a bevel gear shaft, a lead screw or a worm screw.
4. Transmission mechanism of an automatic door opener according to claim 3, characterized in that the transmission shaft (3) is sleeved with at least one bearing (4), the bearing (4) being arranged close to the first end of the transmission shaft (3) and being supported by a bearing seat (40) mounted on the housing (20).
5. Transmission mechanism of an automatic door opener according to claim 4, characterized in that the at least one bearing (4) comprises at least one pair of adjacently arranged angular contact ball bearings.
6. Transmission mechanism of an automatic door opener according to claim 5,
a first step (401) for limiting the outer ring of the first end of the bearing (4) is arranged on the inner wall of the bearing seat (40), and a ring-shaped part (5) for limiting the outer ring of the second end of the bearing (4) is screwed on the bearing seat (40);
a nut (61) is screwed on the transmission shaft (3), and a check ring (62) is arranged between the nut (61) and the inner ring of the first end of the bearing (4); the transmission shaft (3) is provided with a shaft shoulder (32) for limiting the inner ring of the second end of the bearing (4).
7. Transmission mechanism of an automatic door opener according to claim 6, characterized in that the nut (61) is provided with a radial hole (610), in which radial hole (610) a set screw is mounted for abutment against the transmission shaft (3).
8. Transmission mechanism of an automatic door opener according to claim 3,
the planetary gear train further includes: a primary sun wheel (21), a primary planet wheel (22), a primary planet carrier (23), a secondary sun wheel (25) and a secondary planet wheel (26);
an output shaft (11) of the motor (1) is connected with the primary sun gear (21), and the primary planet gear (22) is arranged on the primary planet carrier (23) and meshed with the primary sun gear (21);
the secondary sun gear (25) is attached to the primary planet carrier (23) or is formed in one piece, the secondary sun gear (25) meshes with the secondary planet gears (26), and the secondary planet gears (26) are mounted on the final planet carrier (27).
9. The transmission mechanism of the automatic door opener according to claim 8, wherein the center of the primary planet carrier (23) is provided with a through hole, the center of the first end surface of the transmission shaft (3) is provided with a pin shaft mounting hole, and a pin shaft (7) is mounted in the through hole and the pin shaft mounting hole.
10. An automatic door opening machine characterized by being provided with the transmission mechanism of the automatic door opening machine according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920459853.XU CN210113357U (en) | 2019-04-03 | 2019-04-03 | Automatic door opener and transmission mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920459853.XU CN210113357U (en) | 2019-04-03 | 2019-04-03 | Automatic door opener and transmission mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210113357U true CN210113357U (en) | 2020-02-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920459853.XU Active CN210113357U (en) | 2019-04-03 | 2019-04-03 | Automatic door opener and transmission mechanism thereof |
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| Country | Link |
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| CN (1) | CN210113357U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972962A (en) * | 2019-04-03 | 2019-07-05 | 亚萨合莱自动门系统有限公司 | Automatic door operator and its transmission mechanism |
-
2019
- 2019-04-03 CN CN201920459853.XU patent/CN210113357U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972962A (en) * | 2019-04-03 | 2019-07-05 | 亚萨合莱自动门系统有限公司 | Automatic door operator and its transmission mechanism |
| CN113785101A (en) * | 2019-04-03 | 2021-12-10 | 亚萨合莱自动门系统有限公司 | Automatic door opener and transmission mechanism thereof |
| CN113785101B (en) * | 2019-04-03 | 2023-09-22 | 亚萨合莱自动门系统有限公司 | Automatic door opening machine and transmission mechanism thereof |
| US11939808B2 (en) | 2019-04-03 | 2024-03-26 | Assa Abloy Entrance Systems Ab | Automatic door operator and drive mechanism thereof |
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