Planetary gear reduction device and pedestrian access gate

Abstract

The present invention discloses a planetary gear reduction device comprising an annular ring gear, a sun gear, and a planetary gear carrier, with at least one planetary gear positioned on the planetary gear carrier. The planetary gear carrier is integrally molded from plastic, and the planetary gears are also integrally molded. The planetary gears are connected to the planetary gear carrier via a metal shaft. The planetary gear carrier has reinforcing tubes extending axially on two sides corresponding to the metal shaft, and the metal shaft is inserted into the reinforcing tubes. The present invention also discloses a pedestrian passage gate equipped with the aforementioned planetary gear reduction device for driving the gate's opening and closing. The present invention has the advantage of reducing product processing costs while ensuring power transmission rigidity.

Description

Technical Field

[0001] The present invention relates to a road gate, and in particular to a planetary gear reduction device and a pedestrian passage gate which can reduce product processing costs while ensuring power transmission rigidity. Background Art

[0002] Pedestrian gates are control devices for pedestrian passages and are widely used in places where entrances and exits need to be controlled. Their primary function is to ensure orderly passage of people. Pedestrian gates primarily consist of a motor and a reduction gear. Existing reduction gears are either made entirely of metal or entirely of plastic. All-metal reduction gears offer superior durability, but are generally heavy, require complex processing, and require high raw material costs. All-metal reduction gears also suffer from complex processing and high costs. All-plastic reduction gears are simple to manufacture and low-cost, but similarly shaped all-plastic reduction gears suffer from poor rigidity and are prone to wear. Summary of the Invention

[0003] In order to solve the above problems, the present invention aims to provide a planetary gear reduction device that can reduce product processing costs while ensuring power transmission rigidity.

[0004] The present invention is achieved through the following technical measures: a planetary gear reduction device, including an annular ring gear, a sun gear and a planetary gear bracket, at least one planetary gear is placed on the planetary gear bracket; the planetary gear bracket is integrally molded of plastic, the planetary gear is integrally molded, the planetary gear is connected to the planetary gear bracket through a metal shaft, and the planetary gear bracket has reinforcing cylinders extending axially on two sides corresponding to the metal shaft, and the metal shaft is inserted into the reinforcing cylinder.

[0005] As a preferred embodiment, one end of the metal shaft for mounting the planetary gear is a two-stage circular shaft-shaped step structure, the smaller internal circular shaft-shaped step is similar in size to the outer circle of the reinforcement cylinder and both are inserted into the inner hole of the planetary gear, and the larger external circular shaft-shaped step is larger than the inner hole of the planetary gear, so that the planetary gear is rotatably set on the metal shaft and the reinforcement cylinder.

[0006] As a preferred embodiment, a bearing is clamped in the middle of the planetary gear via a retaining spring, and the metal shaft passes through the bearing to connect the planetary gear to the planetary gear bracket.

[0007] As a preferred embodiment, the other end of the metal shaft extends from the reinforcing tube on the other side of the planetary gear bracket and is clamped by a shaft retaining spring.

[0008] As a preferred embodiment, an axial hole through which the power supply shaft extends is provided in the middle of the planetary gear bracket, and a main shaft reinforcement cylinder is provided axially extending from the axial hole. The two openings of the main shaft reinforcement cylinder are radially expanded outward and are respectively provided with an inner bearing of the motor shaft and an outer bearing of the motor shaft. The motor main shaft is rotatably set on the planetary gear bracket through the inner bearing of the motor shaft and the outer bearing of the motor shaft.

[0009] As a preferred embodiment, a coupling output shaft is fixed to the outer side of the planetary gear support relative to the motor.

[0010] As a preferred embodiment, the coupling output shaft is fixed to the planetary gear support by a plurality of screws.

[0011] As a preferred embodiment, four planetary gears are evenly placed on the planetary gear bracket.

[0012] The present invention also discloses a low-cost pedestrian passage gate, comprising a main unit and a gate. The main unit is provided with a motor, and the motor drives the gate to open and close through any of the above-mentioned planetary gear reduction devices.

[0013] As a preferred embodiment, the pedestrian passage gate is any one of a three-roller gate, a wing gate, a swing gate, and a turnstile.

[0014] The material of the present invention is a metal shaft made of metal, while the planetary gear bracket, a component with complex processing, is made of plastic injection molding. This combination solves the problems of complex processing technology and product cost. In order to compensate for the weakness of poor rigidity of all-plastic, reinforcing cylinders extend axially on the two sides of the planetary gear bracket corresponding to the metal shaft. The metal shaft is inserted into the reinforcing cylinder to connect the planetary gears, so that the planetary gears to transmit power are fixed on the outside of the metal shaft and the reinforcing cylinder, thereby ensuring the rigidity of the product while improving the product production capacity and enhancing its price competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the exploded view of the motor part of an embodiment of the present invention.

[0016] Figure 2 This is a cross-sectional view of the motor portion of an embodiment of the present invention.

[0017] Figure 3 Schematic diagram of an exploded view of a planetary gear reduction device according to an embodiment of the present invention.

[0018] Figure 4 2 is a cross-sectional view of a planetary gear support according to an embodiment of the present invention. DETAILED DESCRIPTION

[0019] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings.

[0020] This embodiment is a low-cost pedestrian passage gate, including a host and a gate, please refer to the attached Figures 1 to 4 , a motor 9 is provided in the main engine, and the motor 9 drives the gate to open and close through a planetary gear reduction device. The pedestrian passage gate is any one of the passage gates that require less power, such as a three-roller gate, a wing gate, a swing gate, and a turnstile;

[0021] Among them, the planetary gear reduction device includes an annular ring gear 7, a sun gear 8 and a planetary gear bracket 4, on which at least one planetary gear 5 is placed; the planetary gear bracket 4 is integrally molded of plastic, and the planetary gear 5 is integrally molded. The planetary gear 5 is connected to the planetary gear bracket 4 through a metal shaft 6, and the planetary gear bracket 4 has reinforcing cylinders 41 and 42 extending axially on two sides corresponding to the metal shaft 6, and the metal shaft 6 is inserted into the reinforcing cylinders 41 and 42.

[0022] The material of the planetary gear reduction device of the pedestrian passage gate of the present invention is selected from metal such as steel to manufacture the metal shaft 6, and the planetary gear bracket 4, which is a component with complex process, is made of plastic injection molding. This combination solves the problems of complex processing technology and product cost. In order to make up for the weakness of poor rigidity of all-plastic, reinforcing cylinders 41 and 42 are axially extended on the two sides of the planetary gear bracket 4 corresponding to the metal shaft 6. The metal shaft 6 is inserted into the reinforcing cylinders 41 and 42 to connect the planetary gear 5, so that the planetary gear 5 to transmit power is fixed outside the metal shaft 6 and the reinforcing cylinder 41, thereby ensuring the rigidity of the product while improving the product production capacity and enhancing its price competitiveness.

[0023] In an embodiment of a planetary gear reduction device, please refer to Figures 1 to 4 To prevent the plastic reinforcing cylinder 41 from being worn during operation, thereby preventing product stability issues, the aforementioned technical solution can be further implemented by providing a two-stage circular axial step structure at one end of the metal shaft 6 where the planetary gear 5 is mounted. The smaller circular axial step on the inside is approximately the same size as the outer circumference of the reinforcing cylinder 41 and both are inserted into the inner hole of the planetary gear 5. The larger circular axial step on the outside is larger than the inner hole of the planetary gear 5, thereby allowing the planetary gear to rotate on the metal shaft 6 and the reinforcing cylinder 41. In this way, a portion of the inner hole of the planetary gear 5 fits over the outer circumference of the reinforcing cylinder 41, while a portion fits over the smaller circular axial step on the inside of the metal shaft 6. This ensures that power is transmitted to the coupling output shaft 2 through the planetary gear bracket 4 while also preventing the product from being easily worn.

[0024] In an embodiment of a planetary gear reduction device, please refer to Figures 1 to 4 On the basis of the above technical solution, the other end of the metal shaft 6 may be buckled into the reinforcing tube 42 on the other side of the planetary gear bracket 4 .

[0025] In an embodiment of a planetary gear reduction device, please refer to Figures 1 to 4 On the basis of the above technical solution, specifically, a bearing 10 is clamped in the middle of the planetary gear 5 by a retaining spring 11 , and the metal shaft 6 passes through the bearing 10 to connect the planetary gear 5 to the planetary gear bracket 4 .

[0026] In an embodiment of a planetary gear reduction device, please refer to Figures 1 to 4 To secure the power shaft of motor 9 and transmit power to planetary gear carrier 4 via sun gear 8 thereon, a further embodiment of the aforementioned technical solution is that a shaft hole 44 is provided in the center of planetary gear carrier 4, through which the power supply shaft extends. Axial extensions of shaft hole 44 are provided with spindle reinforcement cylinders 45 and 43. The two openings of spindle reinforcement cylinders 45 and 43 expand radially outward and are respectively provided with motor shaft inner bearing 12 and motor shaft outer bearing 13. The motor spindle is rotatably mounted on planetary gear carrier 4 via motor shaft inner bearing 12 and motor shaft outer bearing 13, and is prevented from sliding by retaining spring 3. The provision of motor shaft inner bearing 12 and motor shaft outer bearing 13 fixed to planetary gear carrier 4 ensures the safety and quietness of motor 9 during operation.

[0027] In an embodiment of a planetary gear reduction device, please refer to Figures 1 to 4 On the basis of the above technical solution, the planetary gear support 4 may be specifically provided with a coupling output shaft 2 fixed to the outside of the motor.

[0028] In an embodiment of a planetary gear reduction device, please refer to Figures 1 to 4 On the basis of the above technical solution, the coupling output shaft 2 may be fixed to the planetary gear support 4 by a plurality of screws 1 .

[0029] In an embodiment of a planetary gear reduction device, please refer to Figures 1 to 4 On the basis of the above technical solution, it is also possible that four planetary gears 5 are evenly placed on the planetary gear support 4 .

[0030] The above is an explanation of the planetary gear reduction device of the present invention to help understand the present invention. However, the implementation of the present invention is not limited to the above embodiments. Any changes, modifications, substitutions, combinations, and simplifications made without departing from the principles of the present invention should be considered equivalent replacement methods and are included in the scope of protection of the present invention.

Claims

1. A planetary gear reduction device, characterized in that : It includes an annular gear ring, a sun gear and a planetary gear bracket, and at least one planetary gear is placed on the planetary gear bracket; the planetary gear bracket is made of plastic and the planetary gear is made of one piece, and the planetary gear is connected to the planetary gear bracket through a metal shaft, and the planetary gear bracket has reinforcing cylinders extending axially on two sides corresponding to the metal shaft, and the metal shaft is inserted into the reinforcing cylinder; one end of the metal shaft for mounting the planetary gear is a two-stage circular shaft-shaped step structure, the smaller circular shaft-shaped step inside is similar in size to the outer circle of the reinforcing cylinder and both are inserted into the inner hole of the planetary gear, and the larger circular shaft-shaped step outside is larger than the inner hole of the planetary gear, so that the planetary gear is rotatably set on the metal shaft and the reinforcing cylinder, so that part of the inner hole bearing of the planetary gear is supported on the outer circle of the reinforcing cylinder, and part is supported on the smaller circular shaft-shaped step inside the metal shaft.

2. The planetary gear reduction device according to claim 1, characterized in that: The other end of the metal shaft is snapped into the reinforcement cylinder on the other side of the planetary gear bracket.

3. The planetary gear reduction device according to claim 1, characterized in that: A bearing is clamped in the middle of the planetary gear through a retaining spring, and the metal shaft passes through the bearing to connect the planetary gear to the planetary gear bracket.

4. The planetary gear reduction device according to claim 1, characterized in that: An axial hole through which the power supply shaft extends is provided in the middle of the planetary gear bracket, and a main shaft reinforcement cylinder is provided axially extending from the axial hole. The two openings of the main shaft reinforcement cylinder are radially expanded outward and are respectively provided with an inner bearing of the motor shaft and an outer bearing of the motor shaft. The motor main shaft is rotatably provided on the planetary gear bracket through the inner bearing of the motor shaft and the outer bearing of the motor shaft.

5. The planetary gear reduction device according to claim 1, characterized in that: A coupling output shaft is fixed on the outer side of the planetary gear support relative to the motor.

6. The planetary gear reduction device according to claim 5, characterized in that: The coupling output shaft is fixed to the planetary gear bracket by a plurality of screws.

7. The planetary gear reduction device according to claim 1, characterized in that: Four planetary gears are evenly placed on the planetary gear bracket.

8. A pedestrian passage gate, characterized by: The invention comprises a main engine and a gate, wherein a motor is provided in the main engine, and the motor drives the gate to open and close through a planetary gear reduction device according to any one of claims 1 to 7.

9. The pedestrian access gate according to claim 8, characterized in that: The pedestrian passage gate is any one of a three-roller gate, a wing gate, a swing gate, and a turnstile.

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