Planetary gear reduction gearbox

Abstract

The invention discloses a planetary gear reduction gearbox. A driving side pushing block and a driven side pushing block are arranged at the front end of the outer shell, the first-stage sun gear is meshed with the planetary speed reduction assembly to drive the planetary speed reduction assembly to operate, the first-stage sun gear transmits power to the driving side pushing block through the planetary speed reduction assembly, a plurality of gear ring grooves are formed in the inner side of the driven side pushing block, and the magnets are correspondingly arranged in the gear ring grooves. The driving side pushing block is provided with a flat end head, the driving side pushing block can push the magnet into the gear ring groove of the driven side pushing block, the gear ring groove of the driven side pushing block transmits force to the power output end, and the reduction gearbox completes forward force transmission. During reverse clutch (reverse transmission), the adsorption force of the driven side push block and the magnet forms a scissor shape, so that the aim of pushing the magnet outwards away from the groove is fulfilled, namely, the reverse clutch of the reduction gearbox is realized. The planetary gear reduction gearbox solves the problem that an existing planetary gear reduction gearbox on the market at present only has the forward power transmission capacity and does not have the reverse clutch function.

Description

Technical Field

[0001] The present invention relates to the field of reduction boxes, and in particular to a planetary gear reduction box. Background Art

[0002] In the field of mechanical transmission, planetary gear reducers are widely used in various types of equipment due to their excellent deceleration and torque increase characteristics. The conventional working mode of planetary gear reducers is that the motor drives the planetary reducer to operate, and the positive transmission of power is achieved through direct meshing between gears. In this process, the torque is increased and the speed is reduced accordingly, thereby meeting the specific power output requirements of the equipment. However, after research, it was found that this type of existing traditional planetary gear reducer has significant limitations. When trying to reverse rotation from the output end of the gearbox, that is, reverse force transmission, resistance will be generated at each stage of the planetary gear assembly, and due to the characteristics of the planetary gear structure, the resistance will be multiplied. This makes reverse rotation extremely difficult, or even almost impossible to achieve, resulting in the current traditional planetary reducer can only achieve positive force transmission, and cannot meet the use requirements in working conditions that require flexible two-way power transmission. Summary of the invention

[0003] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a planetary gear reducer to solve the problem that the planetary gear reducers currently available on the market only have the ability to transmit power in the forward direction but do not have a reverse clutch function.

[0004] The present invention is implemented as follows: a planetary gear reduction box is constructed; it includes a first-stage sun gear, a planetary reduction assembly, an active thrust block, a thin plate capable of absorbing a magnet, a magnet, a passive thrust block, a bearing, a power output end and an outer shell; an active thrust block, a passive thrust block and a thin plate are arranged in the inner cavity of the outer shell, the first-stage sun gear is located at the rear end of the planetary reduction assembly and meshes with the planetary reduction assembly to drive the planetary reduction assembly to operate; an active thrust block is arranged at the front end of the planetary reduction assembly so that the first-stage sun gear transmits power to the active thrust block through the planetary reduction assembly, the inner side of the passive thrust block has a plurality of gear ring grooves, the magnet is adsorbed on the thin plate and corresponds to the position of the gear ring groove, the active thrust block has a flat end head, the flat end head and the magnet are correspondingly arranged in the inner cavity of the passive thrust block, the flat end head of the active thrust block can push the corresponding magnet into the gear ring groove of the passive thrust block, and the gear ring groove of the passive thrust block is then transmitted to the power output end, so that the reduction box completes the positive force transmission.

[0005] Furthermore, a thin plate capable of absorbing magnets is located on the side of the passive thrust block, a circular hole is opened in the middle of the thin plate, and the rotating end of the active thrust block passes through the thin plate and engages with the planetary reduction assembly.

[0006] Furthermore, the power output end is arranged at the front end of the outer shell through a bearing.

[0007] Furthermore, the active side push block is a push block with poor adsorption capacity or no adsorption to the magnet.

[0008] Furthermore, the passive side push block is a push block that has poor adsorption capacity or no adsorption to the magnet.

[0009] Further; the operation process of the planetary gear reducer is;

[0010] (1) Forward force transmission state: The first-stage sun gear transmits power to the active thrust block through the planetary reduction assembly. The rotational thrust of the active thrust block is used to push the magnet into the gear ring groove of the passive thrust block, thereby bringing power to the passive thrust block gear ring. The passive thrust block gear ring then transmits power to the power output end, and the reduction box completes the forward force transmission; that is, when the forward transmission is in progress, the adsorption force of the magnet and the rotational thrust of the active thrust block form an angle shape similar to that of scissors, and the angle force of the scissors pushes the magnet into the groove;

[0011] (2) Reverse clutch state: When reverse clutching (reverse transmission), the adsorption force of the passive side thrust block and the magnet forms a scissors shape, so as to push the magnet outward away from the groove. That is, when the first-stage sun gear is fixed or slightly blocked, the power output end rotates, which will drive the power of the passive side to be unable to be transmitted to the active side thrust block, thus realizing the clutch blocking of power; and the power output end will not be unable to rotate due to the first-stage sun gear being fixed or slightly blocked, that is, the reduction box realizes reverse clutching.

[0012] In summary, the present application provides a new type of planetary reducer that can achieve forward force transmission and reverse clutching. When the motor drives the reducer, the reducer is selected, the output torque increases and the speed decreases. When the output end of the reducer is driven in reverse, since a clutch is installed at the end of the gearbox, when the drive is reversed, the clutch is disengaged (clutched state), and the force of the reverse drive is clutched through the clutch. The reverse clutch output end rotates alone, while the entire gearbox has been disengaged and remains motionless. Therefore, the present invention has the following advantages: (1) It solves the problem that the planetary gear reducers currently available on the market only have the ability to transmit power in the forward direction, but do not have the reverse clutch function. (2) Setting the clutch function in the planetary reduction can greatly reduce the size of the reduction mechanism, achieving the advantages of lightweight, miniaturization, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1-Figure 2 It is the external schematic diagram of this application;

[0014] Figure 3 This application Figure 2 Middle AA section view;

[0015] Figure 4-Figure 6 It is a schematic diagram of the push block position in this application.

[0016] Among them: the first-stage sun gear 1, the planetary reduction assembly 2, the active thrust block 3, the flat end 3-1, the rotating end 3-2 of the active thrust block, the thin plate 4 that can absorb the magnet, the magnet 5, the passive thrust block 6, the gear ring groove 6-1, the bearing 7, the power output end 8, and the outer shell 9. DETAILED DESCRIPTION

[0017] The following will be combined with the attached Figure 1-Figure 6 The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The present invention provides a planetary gear reducer, such as Figure 1-Figure 6 As shown, it can be implemented in the following manner; a planetary gear reducer, comprising a first-stage sun gear 1, a planetary reduction assembly 2, an active thrust block 3, a thin plate 4 capable of absorbing magnets, a magnet 5, a passive thrust block 6, a bearing 7, a power output end 8 and an outer shell 9; the active thrust block 3, the passive thrust block 6 and the thin plate 4 are arranged in the inner cavity of the outer shell 9, the first-stage sun gear 1 is located at the rear end of the planetary reduction assembly 2 and meshes with the planetary reduction assembly 2 to drive the planetary reduction assembly 2 to operate; the active thrust block 3 is arranged at the front end of the planetary reduction assembly 2, so that ... The male gear 1 transmits power to the active thrust block 3 through the planetary reduction assembly 2. The inner side of the passive thrust block 6 has multiple gear ring grooves 6-1. The magnet 5 is adsorbed on the thin plate 4 and corresponds to the position of the gear ring groove 6-1. The active thrust block 3 has a flat end 3-1. The flat end 3-1 and the magnet 5 correspond to the inner cavity of the passive thrust block 6. The flat end 3-1 of the active thrust block 3 can push the corresponding magnet 5 into the gear ring groove 6-1 of the passive thrust block 6, and the gear ring groove of the passive thrust block 6 is then transmitted to the power output end 8, so that its reduction box completes the positive force transmission.

[0019] When the planetary gear reducer described in the present application is implemented, a thin plate 4 capable of absorbing magnets is located on the side of the passive thrust block 6, a circular hole is opened in the middle of the thin plate 4, and the rotating end 3-2 of the active thrust block 3 passes through the thin plate 4 and engages with the planetary reduction assembly 2.

[0020] When the planetary gear reducer described in the present application is implemented, the power output end 8 is arranged at the front end of the outer shell 9 through the bearing 7.

[0021] When the planetary gear reducer described in the present application is implemented, the active side thrust block 3 is a thrust block with poor adsorption ability to the magnet 5 or no adsorption.

[0022] When the planetary gear reducer described in the present application is implemented, the passive side thrust block 6 is a thrust block that has poor adsorption ability to the magnet 5 or does not adsorb it.

[0023] The present application provides a planetary gear reduction box which can be applied to an electric window opening device, and its operation process is described below;

[0024] 1. Forward force transmission state: the first-stage sun gear 1 transmits power to the active thrust block 3 through the planetary reduction assembly 2, and the rotational thrust of the active thrust block 3 is used to push the magnet 5 into the gear ring groove 6-1 of the passive thrust block 6, so as to bring power to the passive thrust block gear ring, which is then transmitted to the power output end 8, and the reduction box completes the forward force transmission; that is, when the forward transmission is performed, the adsorption force of the magnet and the rotational thrust of the active thrust block 3 form an angle shape similar to that of scissors, and the angle force of the scissors pushes the magnet into the groove;

[0025] 2. Reverse clutch state: When reverse clutching (reverse transmission), the adsorption force of the passive side thrust block 6 and the magnet forms a scissors shape, so as to push the magnet outward away from the groove, that is, when the first-stage sun gear 1 is fixed or slightly blocked, the power output end 8 rotates, thereby driving the power of the passive side to be unable to be transmitted to the active side thrust block 3, thereby realizing the clutch blocking of power; and the power output end cannot be rotated due to the first-stage sun gear being fixed or slightly blocked, that is, the reduction box realizes reverse clutch.

[0026] The principle of the present application is that when transmitting in the forward direction, the adsorption force of the magnet and the rotational thrust of the active side thrust block 3 form an angle shape similar to that of scissors, and the angle force of the scissors pushes the magnet into the groove; when clutching in the reverse direction (reverse transmission), the adsorption force of the passive side thrust block 6 and the magnet forms a scissors shape, so as to push the magnet outward away from the groove, thus achieving clutch. In other words, during forward and reverse transmission, the active side thrust block 3 and the passive side thrust block 6 respectively form an effect similar to two scissors with the adsorption force of the magnet.

[0027] The planetary gear reducer can be used in many fields such as collaborative robots, electric drives for new energy vehicles, medical equipment, and daily life. The application fields are very wide. The following is an example of its application in smart window openers:

[0028] Embodiment: With the improvement of people's living standards, people's demand for home automation is getting higher and higher; people often install window opening equipment on windows to control the opening or closing of windows. Users can remotely control windows, which is convenient and simple to use. Even if users are away from home, they can open and close windows at any time according to their needs. Electric window opening equipment involves planetary gear reducers. Existing planetary gear reducers only have the ability to transmit power in the forward direction, but do not have a reverse clutch function. And when this type of reducer is used, when a clutch function is required, an additional clutch mechanism is required (when the reducer is used on an automatic window opener, when the motor is not running, if there is no clutch function in the reducer mechanism, the manual window opening function cannot be realized at this time), which will cause its structure to be bloated, high cost, large size, heavy weight, complex structure and other disadvantages. Then, when the planetary gear reducer is used in the intelligent window opener, it can solve the problem that the reducer only has the ability to transmit power in the forward direction but does not have the reverse clutch function, making the performance of the window opening equipment more perfect. At the same time, setting the clutch function in the planetary reducer can greatly reduce the size of the reduction mechanism, achieving the advantages of lightweight, miniaturization, and low cost.

[0029] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A planetary gear reducer, characterized in that; The invention comprises a first-stage sun gear (1), a planetary reduction assembly (2), an active thrust block (3), a thin plate (4) capable of absorbing a magnet, a magnet (5), a passive thrust block (6), a bearing (7), a power output end (8) and an outer shell (9); the active thrust block (3), the passive thrust block (6) and the thin plate (4) are arranged in the inner cavity of the outer shell (9); the first-stage sun gear (1) is located at the rear end of the planetary reduction assembly (2) and meshes with the planetary reduction assembly (2) to drive the planetary reduction assembly (2) to operate; the active thrust block (3) is arranged at the front end of the planetary reduction assembly (2) so that the first-stage sun gear (1) can transfer power through the planetary reduction assembly (2) to the outer shell (9); The component (2) is transmitted to the active thrust block (3), the inner side of the passive thrust block (6) has a plurality of gear ring grooves (6-1), the magnet (5) is adsorbed on the thin plate (4) and corresponds to the position of the gear ring groove (6-1), the active thrust block (3) has a flat end head (3-1), the flat end head (3-1) and the magnet (5) are correspondingly located in the inner cavity of the passive thrust block (6), the flat end head (3-1) of the active thrust block (3) can push the corresponding magnet (5) into the gear ring groove (6-1) of the passive thrust block (6), and the gear ring groove of the passive thrust block (6) is then transmitted to the power output end (8), so that the reduction box completes the positive force transmission.

2. A planetary gear reduction box according to claim 1, characterized in that; A thin plate (4) capable of absorbing magnets is located on the side of the passive thrust block (6), a circular hole is opened in the middle of the thin plate (4), and the rotating end (3-2) of the active thrust block (3) passes through the thin plate (4) and meshes with the planetary reduction assembly (2).

3. The planetary gear reducer according to claim 1, characterized in that: The power output end (8) is arranged at the front end of the outer shell (9) through a bearing (7).

4. The planetary gear reducer according to claim 1, characterized in that: The active side push block (3) is a push block with poor adsorption capability or no adsorption capability to the magnet (5).

5. The planetary gear reducer according to claim 1, characterized in that: The passive side push block (6) is a push block with poor adsorption capability or no adsorption capability to the magnet (5).

6. The planetary gear reducer according to claim 1, characterized in that: The operation process of the planetary gear reducer is as follows: (1) Forward force transmission state: the first-stage sun gear (1) transmits power to the active thrust block (3) through the planetary reduction assembly (2), and the rotational thrust of the active thrust block (3) is used to push the magnet (5) into the gear ring groove (6-1) of the passive thrust block (6), thereby bringing power to the passive thrust block gear ring, which is then transmitted to the power output end (8), and the reduction box completes the forward force transmission; that is, when the forward transmission is in progress, the adsorption force of the magnet and the rotational thrust of the active thrust block (3) form an angle shape similar to that of scissors, and the angle force of the scissors pushes the magnet into the groove; (2) Reverse clutch state: When reverse clutch is in effect, the passive side thrust block (6) and the adsorption force of the magnet form a scissors shape, so as to achieve the purpose of pushing the magnet outward away from the groove, that is, when the first-stage sun gear (1) is fixed or slightly blocked, the power output end (8) rotates, thereby driving the power of the passive side to be unable to be transmitted to the active side thrust block (3), thereby achieving power clutch blocking; and the power output end cannot be rotated due to the first-stage sun gear being fixed or slightly blocked, that is, the reduction gear box achieves reverse clutch.

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