Anti-falling device for planetary gear of drainage tractor

Abstract

The embodiment of the utility model discloses an anti-disengaging device for planetary gears of a drainage tractor, and relates to the technical field of speed reducing mechanisms, the anti-disengaging device is used for the drainage traction speed reducing process of a washing machine, the anti-disengaging device comprises an output piece, a plurality of planetary gears and a ratchet wheel, the output piece is provided with an output wheel and a plurality of fixing columns, and the fixing columns are annularly arranged on the output piece; a limiting piece is convexly arranged at one end of the fixed column; the multiple planetary gears correspond to the multiple fixing columns one to one, the multiple planetary gears are arranged outside the fixing columns in a sleeving mode, and the limiting pieces abut against the planetary gears; the ratchet wheel is provided with the fixing wheel, the fixing wheel is rotationally connected with the planetary gears, and the planetary gears can be prevented from falling off from the output piece through the limiting piece arranged on the fixing column.

Description

Technical Field

[0001] The present application relates to the technical field of speed reduction mechanisms, and in particular to an anti-slip device for planetary gears of a drainage tractor. Background Art

[0002] When the washing machine is being pulled by the drainage traction device, the Samsung shell is stuck through the recovery control system, and the rotation of the drainage traction device motor rotor drives the clutch gear, which engages with the Samsung center gear through the pawl of the clutch gear, thereby transmitting the output force of the motor to the traction device transition gear through the Samsung center gear, planetary gears, and Samsung output gear, and further outputs force through the fan-shaped output gear to achieve traction.

[0003] In the process of traction transmission, the planetary gear assembly plays the role of speed change and traction transmission. This component is very important. The existing planetary gear is directly installed on the column of the Samsung output gear. The column has no special design. In the turnover process, the planetary gear is prone to misalignment and loosening. If it is not discovered in time during assembly, when the whole machine is assembled and tested, the drainage traction device will not pull or get stuck, and the function will fail.

[0004] Therefore, how to prevent the planetary gears from falling off is an important technical problem that needs to be solved urgently. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides an anti-dropping device for a planetary gear of a drainage tractor, which can prevent the planetary gear from falling off on the output member by providing a limiting piece on a fixing column.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] The present application provides an anti-slip device for a planetary gear of a drainage tractor, which is used in a deceleration process of drainage traction of a washing machine, and the anti-slip device comprises:

[0008] An output member, wherein the output member is provided with an output shaft and a plurality of fixing columns, the plurality of fixing columns are arranged in a ring on the output shaft, and a stopper is convexly provided at one end of the fixing column;

[0009] A plurality of planetary gears, each of which corresponds to the fixing column one by one, and each of which is sleeved outside the fixing column, and the limiting member abuts against the planetary gears;

[0010] The ratchet is provided with a fixed wheel, and the fixed wheel is rotationally connected with the plurality of planetary gears.

[0011] Optionally, in some embodiments of the present application, the planetary gear is provided with a fixing hole corresponding to the fixing column, the radius of the fixing column is equal to the radius of the fixing hole, and the planetary gear is sleeved outside the fixing column through the fixing hole;

[0012] An abutment surface is formed on the limiting member in a direction toward the planetary gear, the planetary gear is located between the abutment surface and the output member, and the planetary gear is limited outside the fixing column by the abutment surface.

[0013] Optionally, in some embodiments of the present application, the output member includes a fixed plate, an output wheel is arranged on one side of the fixed plate, and the output wheel is located at the center of the fixed plate; a plurality of fixed columns are arranged on the other side of the fixed plate, and the plurality of fixed columns are arranged in a ring and distributed circumferentially on the fixed plate, and a center point formed by the plurality of fixed columns is located on the extension line of the axis of the output wheel.

[0014] Optionally, in some embodiments of the present application, the anti-slip device also includes a shell, the shell is sleeved on the fixed plate, the inner ring of the shell is provided with an annular tooth, the plurality of planetary gears are located in the annular tooth, and the annular tooth is rotationally connected to the planetary gear.

[0015] Optionally, in some embodiments of the present application, a fixing groove is provided at a position of the housing corresponding to the fixing plate, and the fixing plate is located in the fixing groove;

[0016] A plurality of limiting blocks are arranged on the inner wall of the fixing groove, the radius of the fixing plate is equal to the radius of the fixing groove, and the fixing plate is limited in the fixing groove by the limiting blocks.

[0017] Optionally, in some embodiments of the present application, three fixing columns are provided, and correspondingly three planetary gears are provided, and each of the fixing wheels is meshingly connected with the three planetary gears.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] The embodiment of the present application can fix the three planetary gears on the fixing column by providing a limiting piece on the fixing column. The limiting piece is formed with an abutment surface, which can limit the three planetary gears on the fixing column to prevent the planetary gears from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of the overall structure of the anti-slip device for the planetary gear of the drainage tractor provided in an embodiment of the present application;

[0022] Figure 2 A schematic diagram of the explosion structure of the anti-slip device for the planetary gear of the drainage tractor provided in an embodiment of the present application;

[0023] Figure 3 A schematic diagram of a partial cross-section structure of an anti-slip device for a planetary gear of a drainage tractor provided in an embodiment of the present application;

[0024] Figure 4 for Figure 3 The enlarged structural diagram at A in the middle;

[0025] Figure 5 This is a schematic diagram of the overall structure of the output member and the planetary gear assembly provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 100, output member; 110, output wheel; 120, fixed column; 121, limit member; 122, abutment surface; 130, fixed plate; 200, planetary gear; 210, fixing hole; 300, ratchet; 310, fixed wheel; 400, housing; 410, annular tooth; 420, fixing groove; 430, limit block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the present application. It is understood that the drawings are only provided for reference and illustration, and are not used to limit the present application. The connection relationship shown in the drawings is only for the convenience of clear description and does not limit the connection method.

[0029] Specifically, if Figure 1As shown, an embodiment of the present application provides an anti-slip device for a planetary gear of a drainage traction device, which is mainly used for the deceleration process of drainage traction of a washing machine. The execution of this process is decelerated by the drainage traction device. Specifically, when the motor is energized, the single-phase winding will generate an axial magnetic field, which is converted into a radial magnetic field through the claw pole mechanism of the casing and the claw pole plate. This radial magnetic field interacts with the outer rotor magnet, causing the magnet to rotate at a synchronous speed. Since the inner and outer magnets are embedded together, the inner magnets will also rotate at the same speed, thereby generating a rotating magnetic field in the inner motor. This rotating magnetic field will cause the copper ring to induce eddy currents, thereby generating torque. As the motor starts working, this torque will be positioned through a linkage mechanism, thereby driving the gear set in the tractor to start rotating. The rotation of the gear set will drive the steel wire (or rack) to be drawn into the tractor, thereby pulling open the drain valve for drainage. In this process, the deceleration effect of the gear set is very critical. It can effectively increase the output torque so that the tractor has enough power to pull open the drain valve. When the drain valve is fully opened and drainage begins, the electrical control part inside the tractor will come into play, and the control circuit board will issue corresponding instructions according to the working status of the washing machine to ensure that the tractor starts to decelerate at the right time. The deceleration process is mainly achieved by controlling the current and voltage of the motor, so that the speed of the motor gradually decreases, thereby driving the gear set to decelerate.

[0030] In the above deceleration process, it is necessary to control the close matching relationship of the gear set, wherein an anti-slip device is provided in the gear set, and the anti-slip device is composed of an output member 100 and a plurality of planetary gears 200. In the deceleration process, it is necessary to perform transmission deceleration through the planetary gears 200, specifically:

[0031] In the embodiment of the present application, the anti-slip device is arranged inside the drainage tractor, wherein the anti-slip device is provided with an output wheel 110 and a ratchet 300, the ratchet 300 is rotationally connected with the output wheel 110 through the planetary gear 200, wherein the driving device in the drainage tractor abuts against the ratchet 300, and the output wheel 110 is provided on the output member 100, and the output wheel 110 is connected to the output end of the tractor, and the device is used to realize the speed reduction process in the drainage tractor.

[0032] In the above deceleration process, if Figure 2As shown, a fixed wheel 310 is provided on the ratchet 300, and the fixed wheel 310 is meshed with multiple planetary gears 200. In the embodiment of the present application, three planetary gears 200 are provided, and the three planetary gears 200 are enclosed to form a triangular structure. The fixed wheel 310 is located in the middle position of the triangular structure, and the teeth on the fixed wheel 310 are meshed with the teeth of the three planetary gears 200. When the fixed wheel 310 rotates, the three planetary gears 200 are rotated by the rotation of the fixed wheel 310. In the embodiment of the present application, the three planetary gears 200 are separated from each other and have no meshing relationship with each other.

[0033] In the embodiment of the present application, an output member 100 is also provided. Figure 2 As shown, three fixing columns 120 are arranged on the output member 100 in the direction toward the planetary gear 200. The three fixing columns 120 are arranged circumferentially on the fixing plate 130 and are distributed circumferentially. The center point formed by the three fixing columns 120 is located on the extension line of the axis of the output wheel 110. The three fixing columns 120 are arranged corresponding to the position of the planetary gear 200. A fixing hole 210 is opened on the planetary gear 200. The radius of the fixing hole 210 is equal to the radius of the fixing column 120. The planetary gear 200 is sleeved on the fixing column 120 through the fixing hole 210, so that the rotation of the fixing wheel 310 drives the rotation of the planetary gear 200. In order to prevent the planetary gear 200 from falling off the fixing column 120, a limiting member 121 is arranged on the fixing column 120. In the embodiment of the present application, Figure 3 and Figure 4 As shown, the limiting member 121 is a mushroom head, which is subjected to a conical hot riveting treatment through the fixing column 120, and can limit the planetary gear 200. Specifically, an abutting surface 122 is provided on the mushroom head facing the planetary gear 200, and the abutting surface 122 is formed so that when the planetary gear 200 is sleeved on the fixing column 120, a section on the fixing column 120 is melted by the action of high temperature, so that when the melted part contacts the planetary gear 200, an abutting surface 122 is formed, and the abutting surface 122 can limit the planetary gear 200.

[0034] In the above structure, three fixing columns 120 are installed on one side of the fixing plate 130, and an output wheel 110 is arranged on the other side of the fixing plate 130. The output wheel 110 is located at the center of the fixing plate 130. The arrangement of the planetary gear 200 on the fixing plate 130 can only make the rotation of the fixing wheel 310 drive the rotation of the planetary gear 200 itself, but cannot drive the rotation of the output wheel 110. In order to realize the rotation of the output wheel 110, a shell 400 is provided in the embodiment of the present application, and an annular tooth 410 is arranged inside the shell 400. The annular tooth 410 is meshed and connected with the three planetary gears 200. When the fixing wheel 310 rotates, the fixing wheel 310 drives the planetary gear 200 to rotate. Since the three planetary gears 200 are meshed with the annular tooth 410, when the planetary gear 200 rotates, the rotation of the annular tooth 410 drives the rotation of the three planetary gears 200, thereby rotating the output wheel 110.

[0035] In the embodiment of the present application, since the radius of the annular gear 410 is larger than the radius of the planetary gear 200 and the radius of the fixed wheel 310 , the rotation of the planetary gear 200 drives the annular gear 410 to rotate slowly, thereby reducing the rotation speed of the output wheel 110 .

[0036] In the embodiment of the present application, a fixing groove 420 is opened at a position corresponding to the output member 100 on the housing 400, and the radius of the fixing groove 420 is equal to the radius of the fixing plate 130. The fixing plate 130 is located in the fixing groove 420. In order to prevent the fixing plate 130 from being separated from the fixing groove 420, a plurality of limit blocks 430 are arranged on the groove wall of the fixing groove 420. In the embodiment of the present application, three limit blocks 430 are arranged, and the three limit blocks 430 can limit the fixing plate 130 to prevent the fixing plate 130 from falling off from the fixing groove 420.

[0037] The above embodiments are only used to illustrate the technical method of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical method of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical method of the utility model.

Claims

1. An anti-slip device for planetary gears of drainage traction device, used in the deceleration process of drainage traction of washing machine, characterized in that: The anti-falling device comprises: An output member, wherein the output member is provided with an output wheel and a plurality of fixing columns, the plurality of fixing columns are arranged in a ring on the output member, and a stopper is protruded at one end of the fixing column; A plurality of planetary gears, each of the plurality of planetary gears corresponds to the plurality of fixing columns one by one, the plurality of planetary gears are sleeved outside the fixing columns, and the limiting member abuts against the planetary gears; The ratchet is provided with a fixed wheel, and the fixed wheels are meshed and connected with the plurality of planetary gears.

2. The anti-slip device according to claim 1, characterized in that: The planetary gear is provided with a fixing hole corresponding to the fixing column, the radius of the fixing column is equal to the radius of the fixing hole, and the planetary gear is sleeved outside the fixing column through the fixing hole; An abutment surface is formed on the limiting member in a direction toward the planetary gear, the planetary gear is located between the abutment surface and the output member, and the planetary gear is limited outside the fixing column by the abutment surface.

3. The anti-slip device according to claim 2, characterized in that: The output member includes a fixed plate, the output wheel is arranged at one side of the fixed plate, and the output wheel is located at the center of the fixed plate; a plurality of fixed columns are arranged at the other side of the fixed plate, the plurality of fixed columns are arranged circumferentially on the fixed plate and are circumferentially distributed, and the center point formed by the plurality of fixed columns is located on the extension line of the axis of the output wheel.

4. The anti-slip device according to claim 3, characterized in that: The anti-slip device also includes a shell, which is sleeved on the fixed plate. An annular tooth is arranged inside the shell, and a plurality of planetary gears are located inside the annular tooth. The annular tooth is meshed with the planetary gear.

5. The anti-slip device according to claim 4, characterized in that: The housing is provided with a fixing groove at a position corresponding to the fixing plate, and the fixing plate is located in the fixing groove; A plurality of limiting blocks are arranged on the inner wall of the fixing groove, the radius of the fixing plate is equal to the radius of the fixing groove, and the fixing plate is limited in the fixing groove by the limiting blocks.

6. The anti-slip device according to claim 1, characterized in that: The number of the fixing columns is three, and the number of the corresponding planetary gears is three.

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