Large-torque mute planetary gear motor for household elevator door motor

Abstract

The utility model relates to the technical field of automatic door opening equipment, and discloses a large-torque mute planetary gear motor for a household elevator door motor, which comprises an output shaft, an output flange, a planetary transmission mechanism, an input flange and a direct-current brushless motor, the output shaft, the output flange, the planetary transmission mechanism, the input flange and the direct-current brushless motor are sequentially and fixedly connected from the output end to the input end, the planetary transmission mechanism comprises a third-stage planet carrier, a second-stage planet carrier assembly and a first-stage planet carrier assembly, and the output shaft is connected with the output flange through a deep groove ball bearing. According to the large-torque mute planetary gear motor for the household elevator door motor, the plastic bevel gear and the bevel gear ring are adopted for first-stage transmission, compared with a traditional metal straight gear design, the large-torque mute planetary gear motor has the advantages of being stable in transmission, low in noise, high in bearing capacity, large in transmission power and the like, the noise value of an existing product of the same type ranges from 45 decibels to 50 decibels, and the noise value of the product of the large-torque mute planetary gear motor is lower than 40 decibels; and the silence of the product in the use process is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic door opening equipment, in particular to a large-torque silent planetary reduction motor for a household elevator door machine. Background Art

[0002] Currently, opening and closing devices have been widely used in various fields, and automatically opening and closing doors, windows, etc. can be seen everywhere.

[0003] Automatic opening and closing devices make our lives more and more convenient. The reducers used in the opening and closing devices are also different. Different reducers have different deceleration effects. Therefore, according to different usage scenarios, different reducers need to be selected to complete the opening and closing.

[0004] Most of the existing reducers have problems such as complex structure and high noise, which causes high noise in the home environment and affects the user experience. It also causes large wear of mechanical parts, greatly reducing their service life and poor practicality and protection. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to provide a large torque silent planetary reduction motor for a household elevator door machine, so as to solve the problems that most existing reducers mentioned in the above background technology have complex structures, high noise and large wear when in use.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a large-torque silent planetary reduction motor for a household elevator door machine, comprising an output shaft, an output flange, a planetary transmission mechanism, an input flange and a DC brushless motor, wherein the output shaft, the output flange, the planetary transmission mechanism, the input flange and the DC brushless motor are fixedly connected in sequence from the output end to the input end, the planetary transmission mechanism comprises a three-stage planetary carrier, a two-stage planetary carrier assembly and a first-stage planetary carrier assembly, the output shaft is connected to the output flange through a deep groove ball bearing, the two deep groove ball bearings are separated by a hole elastic retaining ring and are mounted on the output shaft, a corrugated elastic retaining ring is arranged on the outside of the output shaft, and the right end of the output shaft is pressed into the corresponding notch of the three-stage planetary carrier through an interference fit.

[0009] Preferably, a first cylindrical pin is pressed into the pin hole of the three-stage planetary carrier through interference fit, the three-stage planetary carrier is connected to the three-stage planetary gear through the first cylindrical pin, the three-stage planetary gear is made of powder metallurgy material, and the three-stage planetary carrier assembly is made of powder metallurgy material.

[0010] Preferably, the third-stage planetary gear is meshingly connected with the third-stage sun gear, a special-shaped gasket is provided between the third-stage planetary gear and the secondary planetary carrier assembly, a second cylindrical pin is pressed into the pin hole of the secondary planetary carrier assembly through an interference fit, the secondary planetary carrier assembly is connected to the secondary planetary gear through the second cylindrical pin, the third-stage planetary gear is made of powder metallurgy material, the secondary planetary gear is made of plastic material, and the secondary planetary carrier assembly is made of powder metallurgy material.

[0011] Preferably, the secondary planetary gear is meshingly connected with the secondary sun gear, a special-shaped gasket is provided between the secondary planetary gear and the primary planetary carrier assembly, and a third cylindrical pin is pressed into the pin hole of the primary planetary carrier assembly through interference fit.

[0012] Preferably, the first-stage planetary gear is connected to the first-stage planetary carrier assembly through a third cylindrical pin, the output flange and the input flange are connected to the housing through vertical countersunk screws, a first-stage internal gear ring is sleeved in the housing and meshes with the first-stage planetary gear, a circular gasket is arranged between the first-stage internal gear ring and the input flange, the first-stage planetary gear is made of plastic material, the first-stage internal gear ring is made of plastic material, and the input flange is made of plastic material.

[0013] Preferably, the input flange is connected to the brushless DC motor via countersunk screws, the primary sun gear is pressed onto the drive shaft of the brushless DC motor via interference fit and meshes with the primary planetary gear, the primary sun gear is made of copper, and the housing is made of powder metallurgy.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The high-torque silent planetary reduction motor for the home elevator door machine adopts plastic helical gears and helical gear rings for the first stage transmission. Compared with the traditional metal spur gear design, it has the advantages of smooth transmission, low noise, high bearing capacity, and high transmission power. The noise value of existing products of the same type is between 45 and 50 decibels. The noise value of the product of this application is less than 40 decibels, which improves the quietness of the product during use;

[0016] 2. The large-torque silent planetary reduction motor for the household elevator door machine adopts a large-modulus plastic spur gear for the second-stage planetary gear (under the condition of satisfying the structural strength). Compared with the small-modulus gear of the transmission, it has the advantages of large load-bearing torque, high strength and low noise. The existing products of the same type have a load-bearing torque of 7 to 8 Nm, and the product of the present application can have a load-bearing torque of 10 Nm, which improves the stability of the use of the product;

[0017] 3. The large-torque silent planetary reduction motor for the home elevator door machine adopts a split structure for the housing. The output flange and the housing are designed separately and connected by side countersunk screws. The assembly is simple and convenient. At the same time, the planetary carrier and sun gear are integrated to reduce processing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the brushless DC motor of the utility model;

[0021] Figure 4 This is a schematic diagram of the cross-sectional structure of the planetary transmission mechanism of the utility model.

[0022] Figure 5 It is a schematic diagram of the cross-sectional structure of the primary internal gear ring of the utility model.

[0023] In the figure: 1, output shaft; 2, three-stage planetary carrier; 3, output flange; 4, deep groove ball bearing; 5, elastic retaining ring for hole; 6, wave elastic retaining ring; 7, first cylindrical pin; 8, three-stage planetary gear; 9, two-stage planetary carrier assembly; 901, three-stage sun gear; 10, special-shaped gasket; 11, second cylindrical pin; 12, two-stage planetary gear; 13, first-stage planetary carrier assembly; 1301, two-stage sun gear; 14, third cylindrical pin; 15, first-stage planetary gear; 16, housing; 17, countersunk screw; 18, first-stage inner gear ring; 19, circular gasket; 20, input flange; 21, first-stage sun gear; 22, DC brushless motor; 23, planetary transmission mechanism. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1 - Figure 5The utility model provides a technical solution: a large-torque silent planetary reduction motor for a household elevator door machine, comprising an output shaft 1, an output flange 3, a planetary transmission mechanism 23, an input flange 20 and a DC brushless motor 22, wherein the output shaft 1, the output flange 3, the planetary transmission mechanism 23, the input flange 20 and the DC brushless motor 22 are fixedly connected in sequence from the output end to the input end, the planetary transmission mechanism 23 comprises a three-stage planetary carrier 2, a two-stage planetary carrier assembly 9 and a first-stage planetary carrier assembly 13, the output shaft 1 is connected to the output flange 3 through a deep groove ball bearing 4, two deep groove ball bearings 4 are separated by a hole elastic retaining ring 5 and are sleeved on the output shaft 1, a corrugated elastic retaining ring 6 is arranged on the outside of the output shaft 1, and the right end of the output shaft 1 is pressed into the corresponding notch of the three-stage planetary carrier 2 through an interference fit.

[0026] A first cylindrical pin 7 is pressed into the pin hole of the third-stage planet carrier 2 by interference fit, and the third-stage planet carrier 2 is connected to the third-stage planetary gear 8 through the first cylindrical pin 7. The third-stage planetary gear 8 is meshedly connected with the third-stage sun gear 901. A special-shaped gasket 10 is provided between the third-stage planetary gear 8 and the second-stage planet carrier assembly 9. A second cylindrical pin 11 is pressed into the pin hole of the second-stage planet carrier assembly 9 by interference fit, and the second-stage planet carrier assembly 9 is connected to the second-stage planetary gear 12 through the second cylindrical pin 11. The second-stage planetary gear 12 is meshedly connected with the second-stage sun gear 1301. A special-shaped gasket 10 is provided between the second-stage planetary gear 12 and the first-stage planet carrier assembly 13. A third cylindrical pin 14 is pressed into the pin hole of the first-stage planet carrier assembly 13 by interference fit, and the first-stage planetary gear 15 is connected to the first-stage planet carrier assembly 13 through the third cylindrical pin 14. The output flange 3 and the input flange 20 are connected to the housing 16 through vertical countersunk screws 17. The housing 16 A primary inner gear ring 18 is sleeved inside and meshes with the primary planetary gear 15. A circular gasket 19 is arranged between the primary inner gear ring 18 and the input flange 20. The input flange 20 is connected to the DC brushless motor 22 by a countersunk screw 17. The primary sun gear 21 is pressed into the transmission shaft of the DC brushless motor 22 by interference fit and meshes with the primary planetary gear 15. When the reducer is working, the DC brushless motor 22 outputs power, which is transmitted to the primary sun gear 21 through the motor transmission shaft. The primary sun gear 21 transmits the rotational motion to the primary planetary gear 15. A third cylindrical pin 14 is arranged between the primary planetary gear 15 and the planet carrier. The primary planetary gear 15 can rotate on the third cylindrical pin 14. At the same time, the primary planetary gear 15 transmits the rotational motion to the primary inner gear ring 18. The primary inner gear ring 18 outputs power through the primary planet carrier assembly 13. Similarly, the power is sequentially transmitted to the secondary planet carrier assembly 9 to the output shaft 1.

[0027] Working principle: When the reducer is working, the brushless DC motor 22 outputs power, which is transmitted to the primary sun gear 21 through the motor drive shaft. The primary sun gear 21 transmits the rotational motion to the primary planetary gear 15. A third cylindrical pin 14 is provided between the primary planetary gear 15 and the planet carrier. The primary planetary gear 15 can rotate on the third cylindrical pin 14. At the same time, the primary planetary gear 15 transmits the rotational motion to the primary inner ring 18. The primary inner ring 18 outputs the power through the primary planet carrier assembly 13. Similarly, the power is sequentially transmitted to the secondary planet carrier assembly 9 to the output shaft 1.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. A high-torque silent planetary reduction motor for a household elevator door machine, comprising an output shaft (1), an output flange (3), a planetary transmission mechanism (23), an input flange (20) and a brushless DC motor (22), characterized in that: The output shaft (1), the output flange (3), the planetary transmission mechanism (23), the input flange (20) and the DC brushless motor (22) are fixedly connected in sequence from the output end to the input end. The planetary transmission mechanism (23) comprises a three-stage planetary carrier (2), a two-stage planetary carrier assembly (9) and a first-stage planetary carrier assembly (13). The output shaft (1) is connected to the output flange (3) via a deep groove ball bearing (4). The two deep groove ball bearings (4) are separated by a hole elastic retaining ring (5) and are sleeved on the output shaft (1). A wave elastic retaining ring (6) is arranged on the outer side of the output shaft (1). The right end of the output shaft (1) is pressed into a corresponding notch of the three-stage planetary carrier (2) by interference fit.

2. The high-torque silent planetary reduction motor for a household elevator door machine according to claim 1 is characterized in that: A first cylindrical pin (7) is pressed into the pin hole of the three-stage planet carrier (2) through interference fit, and the three-stage planet carrier (2) is connected to a three-stage planetary gear (8) through the first cylindrical pin (7).

3. The high-torque silent planetary reduction motor for a household elevator door machine according to claim 2 is characterized in that: The third-stage planetary gear (8) is meshingly connected with a third-stage sun gear (901); a special-shaped gasket (10) is provided between the third-stage planetary gear (8) and the second-stage planet carrier assembly (9); a second cylindrical pin (11) is pressed into a pin hole of the second-stage planet carrier assembly (9) through interference fit; and the second-stage planet carrier assembly (9) is connected to the second-stage planetary gear (12) through the second cylindrical pin (11).

4. The high-torque silent planetary reduction motor for a household elevator door machine according to claim 3 is characterized in that: The secondary planetary gear (12) is meshedly connected with the secondary sun gear (1301), a special-shaped gasket (10) is provided between the secondary planetary gear (12) and the primary planet carrier assembly (13), and a third cylindrical pin (14) is pressed into the pin hole of the primary planet carrier assembly (13) through interference fit.

5. The high-torque silent planetary reduction motor for a household elevator door machine according to claim 4 is characterized in that: The first-stage planetary gear (15) is connected to the first-stage planetary carrier assembly (13) via a third cylindrical pin (14); the output flange (3) and the input flange (20) are connected to the housing (16) via vertical countersunk screws (17); a first-stage internal gear ring (18) is sleeved in the housing (16) and meshes with the first-stage planetary gear (15); a circular gasket (19) is provided between the first-stage internal gear ring (18) and the input flange (20).

6. A high-torque silent planetary reduction motor for a household elevator door machine according to claim 5, characterized in that: The input flange (20) is connected to the brushless DC motor (22) via countersunk screws (17), and the primary sun gear (21) is pressed onto the transmission shaft of the brushless DC motor (22) via interference fit and meshes with the primary planetary gear (15).

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