Planetary clutch device

Abstract

The invention discloses a planetary clutch device, and belongs to the technical field of steering engines. The device is used for conducting conversion of different transmission ratios on a steering engine and comprises a clutch spring, a sun clutch piece, a ring gear clutch piece, a planet gear and a planet carrier used for installing the planet gear, the clutch spring abuts against the left end face of the sun clutch piece, the right end face of the sun clutch piece is matched with the ring gear clutch piece in a separable mode, and the planet carrier is used for installing the planet gear. The ring tooth clutch piece comprises an inner gear ring, the planet teeth are meshed with the inner gear ring, and when the clutch spring is stressed to be in a clutch state, the sun clutch piece is disengaged from the ring tooth clutch piece, meanwhile, the sun clutch piece is matched with the planet teeth, and therefore transmission ratio conversion is achieved. The device has the beneficial effects that when the starting speed is high and the load is increased, the clutch of the steering engine is triggered, the planetary gear set immediately joins in transmission, the gear ratio is increased, the torque is increased, and torque conversion can be achieved without electric control matched gear shifting.

Description

Technical Field

[0001] The present invention relates to the technical field of steering gears, and in particular to a planetary clutch device. Background Art

[0002] Traditional servos are mainly composed of a housing, a circuit board, a drive motor, a reduction gear, and a position detection element. Its working principle is that the receiver sends a signal to the servo, and the IC on the circuit board drives the coreless motor to start rotating, and the power is transmitted to the output shaft through the reduction gear. At the same time, the output shaft position detector sends back a signal to determine whether the position has been reached. The position detector is actually a variable resistor or a rotating magnetic encoder. When the servo rotates, the voltage value will also change. The rotation angle can be known based on the detected voltage value.

[0003] There are many shapes and types of popular servos on the market, but the main functional modules inside the servos are basically the same. Their main components and functions are as follows: the servo controller is the actuator of the entire control system, which has a central controller, data storage, drive module, etc. The mainboard of the central controller is a single-chip microcomputer, and the language program can be manually written to complete directional control.

[0004] The appearance of currently commonly used servos cannot be changed at will, but they are also required to have fast response speed and large output torque. It is difficult for current servos to meet the above requirements at the same time. Summary of the invention

[0005] The object of the present invention is to provide a planetary clutch device which can be applied to a servo, and the servo has a fast response and a large output torque while ensuring that the shape of the servo remains unchanged, thereby solving at least one technical problem involved in the background technology.

[0006] In order to solve the above-mentioned technical problems, the present invention is achieved as follows:

[0007] The present invention provides a planetary clutch device for converting different transmission ratios of a servo, comprising a clutch spring, a sun clutch, a ring gear clutch, planetary gears and a planetary carrier for mounting the planetary gears, wherein the clutch spring abuts against the left end face of the sun clutch, the right end face of the sun clutch is detachably matched with the ring gear clutch, the ring gear clutch comprises an inner gear ring, the planetary gears are meshed with the inner gear ring, when the clutch spring is subjected to force to enter a clutch state, the sun clutch is disengaged from the ring gear clutch, and at the same time the sun clutch is matched with the planetary gears, thereby realizing transmission ratio conversion.

[0008] Optionally, the sun clutch and the ring gear clutch are connected via planar gear matching.

[0009] Optionally, the sun clutch and the ring gear clutch are connected via a wear-resistant disc.

[0010] Optionally, the sun clutch and the ring gear clutch are connected via magnets.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The present invention integrates the clutch and the planetary structure, utilizes dynamics, and increases the torque to trigger the clutch to achieve transmission ratio conversion, satisfying the user's needs for both fast and powerful functions;

[0013] (2) The present invention utilizes a planetary clutch to realize the conversion of two gear ratios, thereby achieving a fast speed at startup. When the load increases, the servo clutch is triggered to allow the planetary gear set to immediately join the transmission, thereby increasing the gear ratio and torque, and torque conversion can be achieved without the need for electronic control to coordinate gear shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0015] Figure 1 A simplified structural diagram of the planetary clutch device provided by the present invention;

[0016] Figure 2 A simplified diagram of energy transfer between the planetary clutch device and the motor provided by the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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] See also Figure 1 As shown, an embodiment of the present invention provides a planetary clutch device for converting different transmission ratios of a servo, including a clutch spring 1, a sun clutch 2, a ring gear clutch 3, planetary gears 4 and a planet carrier 5 for mounting the planetary gears 4.

[0019] The clutch spring 1 abuts against the left end surface of the sun clutch 2 , and the right end surface of the sun clutch 2 is detachably matched with the ring gear clutch 3 .

[0020] It should be further explained that the sun clutch and the ring gear clutch are connected via flat teeth, wear-resistant discs or magnets.

[0021] The ring gear clutch 3 includes an inner ring gear, and the planetary gears 4 mesh with the inner ring gear.

[0022] Recombination Figure 2 As shown, the ring gear clutch 3 of the planetary clutch device is connected to the motor teeth 71 of the motor 7 through the first gear 6; the sun clutch 2 is meshed with the second gear 8 to input the load force T ln In this way, before the clutch, the sun clutch 2 is meshed with the second gear 8, the ring gear clutch 3 is matched with the sun clutch 2, and then the ring gear clutch 3 is connected to the motor gear 71 through the first gear 6, thereby generating an output of the first transmission ratio; when the steering gear is blocked, the axial force yields and the clutch spring 1 enters the clutch state, the sun clutch 2 is disengaged from the ring gear clutch 3, and at the same time, the sun clutch 2 is matched with the planetary gear 4, and the planetary gear 4 is meshed with the ring gear clutch 3, and the ring gear clutch 3 is connected to the motor gear 71 through the first gear 6, thereby generating an output of the second transmission ratio, completing the transmission ratio conversion, and allowing the entire gear set to achieve a greater torque output.

[0023] In summary, it can be seen that when the clutch spring 1 is subjected to load force input and motor output torque resistance and the maximum output torque T out When the clutch spring torque T at point A C Less than T G The planetary module meshes at the same time, so that when the load increases, the servo clutch is triggered, allowing the planetary gear group to immediately join the transmission, increasing the gear ratio and increasing the torque. Torque conversion can be achieved without the need for electronic control and gear shifting.

[0024] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or device including the element.

[0025] In addition, it should be noted that the scope of the methods and systems in the embodiments of the present invention is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

[0026] The embodiments of the present invention are described above, but the present invention is not limited to the above-mentioned specific implementation modes. The above-mentioned specific implementation modes are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, all of which are protected by the present invention.

Claims

1. A planetary clutch device for converting a steering gear into different transmission ratios, characterized in that: It includes a clutch spring, a sun clutch, a ring gear clutch, planetary gears and a planetary carrier for mounting the planetary gears. The clutch spring abuts against the left end face of the sun clutch, and the right end face of the sun clutch is detachably matched with the ring gear clutch. The ring gear clutch includes an inner ring gear, and the planetary gears are meshed with the inner ring gear. When the clutch spring is subjected to force and enters a clutch state, the sun clutch is disengaged from the ring gear clutch, and at the same time, the sun clutch is matched with the planetary gears, thereby realizing transmission ratio conversion.

2. The planetary clutch device according to claim 1, characterized in that: The sun clutch and the ring gear clutch are connected via plane teeth.

3. The planetary clutch device according to claim 1, characterized in that: The sun clutch component and the ring gear clutch component are connected through a wear-resistant disk.

4. The planetary clutch device according to claim 1, characterized in that: The sun clutch component and the ring gear clutch component are connected through magnet cooperation.

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