A speed reducer with planetary gears

Abstract

This utility model discloses a reducer with planetary gears, including a housing, with an output shaft and an input shaft respectively inserted at both ends of the housing, and a reduction assembly is disposed inside the housing, the reduction assembly connecting the output shaft and the input shaft; the reduction assembly includes a transmission base and a reduction gear set rotatably mounted on the transmission base, and the inner wall of the housing forms an integrally formed meshing tooth, the reduction gear set meshing with the meshing tooth, the input shaft being connected to the transmission base, and the output shaft being drively connected to the reduction gear set.

Description

Technical Field

[0001] This utility model relates to the field of speed reducer technology, specifically to a speed reducer with planetary gears. Background Technology

[0002] The speed reducer is one of the core components of the washing machine's transmission system. Its main function is to reduce the high-speed rotation output of the motor and convert it into a suitable speed for the washing and spin-drying programs. During the operation of the washing machine, the speed reducer, through a precision gear transmission mechanism, can ensure the low-speed reciprocating motion of the impeller during washing (usually 40-60 rpm) and the high-speed rotation of the inner drum during spin-drying (up to 800-1200 rpm).

[0003] Existing washing machine reducers typically employ a planetary gear structure. This involves placing a gear ring and planetary gears within the housing, which connect the output and input shafts. The gear ring and planetary gears work together to achieve speed reduction. However, this type of reducer not only has a complex assembly process, but the gear ring is also prone to detachment during prolonged use, leading to reducer failure. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a reducer with planetary gears.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0006] A reducer with planetary gears includes a housing, an output shaft and an input shaft respectively inserted at both ends of the housing, and a reduction assembly is disposed inside the housing, the reduction assembly connecting the output shaft and the input shaft;

[0007] The reduction assembly includes a transmission base and a reduction gear set mounted on the transmission base. The inner wall of the housing forms an integrally formed meshing tooth. The reduction gear set meshes with the meshing tooth. The input shaft is connected to the transmission base, and the output shaft is connected to the reduction gear set in a transmission connection.

[0008] Preferably, the transmission seat has a first insertion slot, in which a rotating column is inserted, and the reduction gear set is mounted on the rotating column. Through the above improvements, the reduction gear set is mounted on the rotating column, thereby ensuring the stability of the reduction gear set during rotation.

[0009] Preferably, the transmission seat is covered with a limiting plate, and the limiting plate has a second insertion groove. The top of the rotating column is inserted into the second insertion groove. With the above improvement, the limiting plate on the top of the transmission seat can prevent the reduction gear set from disengaging from the transmission seat, and the top of the rotating column is inserted into the second insertion groove of the limiting plate, which further improves the stability of the reduction gear set during rotation.

[0010] Preferably, the transmission seat has a plurality of connecting protrusions arranged at intervals, and the connecting protrusions form a transmission connection groove for exposing the reduction gear set. Furthermore, the connecting protrusions have insertion protrusions, and the limiting plate has a connection groove for inserting the insertion protrusions. Through these improvements, the exposed reduction gear set portion is exposed in the transmission connection groove and meshes with the meshing teeth on the housing to achieve speed reduction of the output shaft. Additionally, the connecting protrusions have insertion protrusions, and the limiting plate has a connection groove for inserting the insertion protrusions, thereby improving the stability of the limiting plate installation.

[0011] Preferably, the housing includes an upper connecting shell and a lower connecting shell. The lower connecting shell has a positioning buckle, and the upper connecting shell has a positioning groove for the positioning buckle to be inserted. The lower and upper connecting shells also have screw connection holes arranged opposite to each other. With the above improvements, during the connection process of the upper and lower connecting shells, the positioning buckle can be inserted into the positioning groove first to make a preliminary connection between the upper and lower connecting shells. Then, the screw connection holes on the lower and upper connecting shells are connected by screws, thereby ensuring the stability of the connection between the lower and upper connecting shells.

[0012] Preferably, a sealing protrusion is formed on the upper connecting shell, and a sealing groove is formed on the lower connecting shell for the sealing protrusion to be inserted into. A sealing ring is provided in the sealing groove, and the sealing protrusion abuts against the sealing ring. Through the above improvements, the sealing performance of the shell is greatly increased.

[0013] Preferably, the ends of the upper connecting shell and the lower connecting shell are provided with rotating guide sleeves, and the output shaft and the input shaft are inserted in the rotating guide sleeves. Through the above improvements, the rotating guide sleeves are used to limit the rotation of the output shaft and the input shaft, thereby improving the stability of the output shaft and the input shaft during rotation.

[0014] Preferably, the lower connecting shell has a rotating support protrusion that supports the bottom of the transmission seat, and the rotating support protrusion is provided with guide balls. The bottom of the transmission seat has a rotating guide groove for the balls to be inserted. Through the above improvements, the rotating support protrusion is supported on the bottom of the transmission seat, ensuring the installation position of the transmission seat inside the shell. Furthermore, during the rotation of the transmission seat, the guide balls cooperate with the rotating guide groove, which can further improve the stability of the transmission seat during rotation.

[0015] Preferably, a damper assembly is provided inside the housing, and the input shaft includes a first input section connecting the input section of the damper assembly and a second input section connecting the transmission seat and the damper assembly. The first input section and the second input section are engaged. Through the above improvements, the input shaft is connected by the damper assembly, thereby enabling emergency braking and preventing injury to the user.

[0016] Preferably, the damper assembly includes a mounting housing within a fixed housing, a damping pad assembly disposed within the mounting housing, and a compression structure for compressing the damping pad assembly. The damping pad assembly includes alternately arranged damping plates and fixed pads. The damping plates engage with the first input segment. The compression structure includes a compression block disposed within the mounting housing, an electromagnetic drive unit for adsorbing the compression block, and an elastic element disposed between the electromagnetic drive unit and the compression block. When the electromagnetic drive unit is de-energized, the elastic element forces the compression block to compress the damping pad assembly. Through the above improvements, when it is necessary to stop the input shaft rotation, the electromagnetic drive unit is de-energized, and the compression block, under the action of the elastic element, compresses the damping pad assembly, increasing the friction between the damping plates and the fixed pads, thereby stopping the input shaft movement.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] The output shaft and input shaft are connected by a reduction gear assembly installed inside the housing. The reduction gear assembly includes a transmission base and a reduction gear set mounted on the transmission base. The reduction function of the reducer is achieved by setting an integrally formed meshing tooth inside the housing and meshing with the reduction gear set. The meshing tooth is integrally formed on the housing. Compared with the conventional setting of the gear ring inside the housing, it not only avoids the risk of the gear ring falling off, but also greatly improves the structural strength and service life. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0020] Figure 2 This is an exploded view of the overall structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the limiting plate of this utility model;

[0022] Figure 4 This is a schematic diagram of the upper connecting shell of this utility model;

[0023] Figure 5 This is a schematic diagram of the lower connecting shell and the deceleration assembly of this utility model;

[0024] Figure 6 This is a cross-sectional view of the overall structure of this utility model;

[0025] Figure 7 For the present utility model Figure 6 A magnified view of a section at point A in the middle;

[0026] Figure 8 This is a structural schematic diagram of Embodiment 3 of the present invention;

[0027] Figure 9 For the present utility model Figure 8 A magnified view of a section at point B in the middle;

[0028] In the diagram: 1. Housing; 2. Output shaft; 3. Input shaft; 4. Reduction assembly; 1.1. Transmission base; 1.2. Reduction gear set; 1.3. Meshing teeth; 1.4. First insertion slot; 1.5. Rotating column; 1.6. Limiting plate; 1.7. Second insertion slot; 1.8. Connecting protrusion; 1.9. Transmission connection slot; 1.10. Insertion protrusion; 1.11. Connecting slot; 2.1. Upper connecting shell; 2.2. Lower connecting shell; 2.3. Positioning buckle; 2.4. Positioning slot; 2.5. Screw connection hole 3.1 Sealing protrusion; 3.2 Sealing groove; 3.3 Sealing ring; 3.4 Rotating guide sleeve; 4.1 Rotating support protrusion; 4.2 Guide ball; 4.3 Rotating guide groove; 5.1 Damper assembly; 5.2 First input section; 5.3 Second input section; 5.4 Mounting housing; 5.5 Damping gasket assembly; 5.6 Extrusion structure; 5.7 Damping sheet; 5.8 Fixing gasket; 5.9 Extrusion block; 5.10 Electromagnetic drive unit; 5.11 Elastic element; Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0031] Example 1

[0032] like Figure 1-6As shown, a reducer with planetary gears includes a housing 1, with an output shaft 2 and an input shaft 3 respectively inserted at both ends of the housing 1, and a reduction assembly 4 is provided inside the housing 1, which is connected to the output shaft 2 and the input shaft 3.

[0033] Specifically, the reduction assembly 4 includes a transmission base 1.1 and a reduction gear set 1.2 mounted on the transmission base 1.1. The inner wall of the housing 1 forms an integrally formed meshing tooth 1.3. The reduction gear set 1.2 meshes with the meshing tooth 1.3. The input shaft 3 is connected to the transmission base 1.1, and the output shaft 2 is connected to the reduction gear set 1.2.

[0034] The speed reduction function of the reducer is achieved by meshing with the reduction gear set 1.2 through the meshing teeth 1.3. The meshing teeth 1.3 are integrally formed on the housing 1. Compared with the conventional setting of the gear ring in the housing 1, it not only avoids the risk of the gear ring falling off, but also greatly improves the structural strength and service life.

[0035] As a further explanation of the installation of the reduction gear assembly 4, the transmission base 1.1 is provided with a first insertion groove 1.4, a rotating column 1.5 is inserted into the first insertion groove 1.4, and the reduction gear set 1.2 is rotated on the rotating column 1.5. By setting the reduction gear set 1.2 on the rotating column 1.5, the stability of the reduction gear set 1.2 during rotation is ensured.

[0036] Furthermore, a limiting plate 1.6 is provided on the top of the transmission seat 1.1, and a second insertion groove 1.7 is formed on the limiting plate. The top of the rotating column 1.5 is inserted into the second insertion groove 1.7. The limiting plate 1.6 on the top of the transmission seat 1.1 can prevent the reduction gear set 1.2 from disengaging from the transmission seat 1.1, and the top of the rotating column 1.5 is inserted into the second insertion groove 1.7 of the limiting plate, which further improves the stability of the reduction gear set 1.2 during rotation.

[0037] In addition, several connecting protrusions 1.8 are arranged at intervals on the transmission base 1.1. The connecting protrusions form a transmission connection groove 1.9 for exposing the reduction gear set 1.2. The connecting protrusions 1.8 form insertion protrusions 1.10. The limiting plate 1.6 forms a connection groove 1.11 for inserting the insertion protrusions 1.10. The portion of the reduction gear set 1.2 is exposed in the transmission connection groove 1.9 and meshes with the meshing teeth 1.3 on the housing 1 to reduce the speed of the output shaft 2. The connecting protrusions 1.8 form insertion protrusions 1.10, and the limiting plate forms a connection groove 1.11 for inserting the insertion protrusions 1.10 to improve the stability of the limiting plate installation.

[0038] Regarding a further explanation of the embodiment of housing 1, housing 1 includes an upper connecting shell 2.1 and a lower connecting shell 2.2. The lower connecting shell 2.2 is provided with a positioning buckle 2.3, and the upper connecting shell 2.1 is provided with a positioning groove 2.4 for the positioning buckle 2.3 to be inserted. The lower connecting shell 2.2 and the upper connecting shell 2.1 are provided with screw connection holes 2.5 arranged opposite to each other. During the connection process of the upper connecting shell 2.1 and the lower connecting shell 2.2, the positioning buckle 2.3 can be inserted into the positioning groove 2.4 to make a preliminary connection between the upper connecting shell 2.1 and the lower connecting shell 2.2. Then, the screw connection holes 2.5 on the lower connecting shell 2.2 and the upper connecting shell 2.1 are connected by screws, thereby ensuring the stability of the connection between the lower connecting shell 2.2 and the upper connecting shell 2.1.

[0039] Furthermore, a sealing protrusion 3.1 is formed on the upper connecting shell 2.1, and a sealing groove 3.2 is formed on the lower connecting shell 2.2 for the sealing protrusion 3.1 to be inserted into. A sealing ring 3.3 is provided in the sealing groove 3.2, and the sealing protrusion 3.1 abuts against the sealing ring 3.3, thereby greatly increasing the sealing performance of the shell 1.

[0040] Preferably, a rotating guide sleeve 3.4 is inserted into the ends of the upper connecting shell 2.1 and the lower connecting shell 2.2, and the output shaft 2 and the input shaft 3 are inserted into the rotating guide sleeve 3.4. The rotating guide sleeve 3.4 is used to limit the rotation of the output shaft 2 and the input shaft 3, so as to improve the stability of the output shaft 2 and the input shaft 3 during rotation.

[0041] Example 2

[0042] like Figure 6 , Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the lower connecting shell 2.2 has a rotating support protrusion 4.1, which supports the bottom of the transmission seat 1.1. The rotating support protrusion 4.1 is provided with guide balls 4.2, and the bottom of the transmission seat 1.1 has a rotating guide groove 4.3 for the balls to be inserted. The rotating support protrusion 4.1 supports the bottom of the transmission seat 1.1, ensuring the installation position of the transmission seat 1.1 inside the shell 1. During the rotation of the transmission seat 1.1, the guide balls 4.2 cooperate with the rotating guide groove 4.3, which can further improve the stability of the transmission seat 1.1 during the rotation process.

[0043] Example 3

[0044] like Figure 8 , Figure 9As shown, the difference between this embodiment and Embodiment 1 is that a damper assembly 5.1 is provided inside the housing 1, and the input shaft 3 includes a first input section 5.2 that connects to the input section of the damper assembly 5.1, and a second input section 5.3 that connects the transmission seat 1.1 and the damper assembly 5.1. The first input section 5.2 and the second input section 5.3 are engaged. By connecting the input shaft 3 with the damper assembly 5.1, emergency braking can be achieved to avoid injury to the user.

[0045] Furthermore, the damper assembly 5.1 includes a mounting housing 5.4 within the fixed housing 1, a damping pad assembly 5.5 disposed within the mounting housing 5.4, and a pressing structure 5.6 for pressing the damping pad assembly 5.5. The damping pad assembly 5.5 includes alternately arranged damping plates 5.7 and fixed pads 5.8. The damping plates 5.7 engage with the first input segment 5.2. The pressing structure 5.6 includes a pressing block 5.9 disposed within the mounting housing 5.4, and an electromagnetic drive unit 5.10 that drives the pressing block 5.9 to move toward the damping pad assembly 5.5. The electromagnetic drive unit 5.10 is energized and forces the pressing block 5.9 away from the damping pad assembly 5.5. When it is necessary to stop the rotation of the input shaft 3, the electromagnetic drive unit 5.10 is de-energized. Under the action of the elastic element 5.11, the pressing block 5.9 presses the damping pad assembly 5.5, increasing the friction between the damping plates 5.7 and the fixed pads 5.8, thereby stopping the movement of the input shaft 3.

[0046] In addition, the electromagnetic drive unit 5.10 is connected to the drive motor signal connected to the input shaft 3. When the brake of the drive motor malfunctions, the electromagnetic drive unit 5.10 will cut off the power, thereby increasing safety.

[0047] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A reduction gear having a planetary gear, characterized by, The device includes a housing (1), with an output shaft (2) and an input shaft (3) inserted at both ends of the housing (1), and a speed reduction assembly (4) is provided inside the housing (1), which connects the output shaft (2) and the input shaft (3). The deceleration assembly (4) includes a transmission base (1.1) and a deceleration gear set (1.2) mounted on the transmission base (1.1). The inner wall of the housing (1) forms an integrally formed meshing tooth (1.3). The deceleration gear set (1.2) meshes with the meshing tooth (1.3). The input shaft (3) is connected to the transmission base (1.1), and the output shaft (2) is connected to the deceleration gear set (1.2) in a transmission connection.

2. A reducer with planetary gears according to claim 1, characterized in that: The transmission seat (1.1) has a first insertion groove (1.4), a rotating column (1.5) is inserted into the first insertion groove (1.4), and the reduction gear set (1.2) is rotatably mounted on the rotating column (1.5).

3. A reduction gear having planetary gears as claimed in claim 2, characterized in that: The transmission seat (1.1) is covered with a limiting plate (1.6), and the limiting plate (1.6) has a second insertion groove (1.7). The top of the rotating column (1.5) is inserted into the second insertion groove (1.7).

4. A reduction gear having planetary gears as claimed in claim 3, characterized in that: The transmission seat (1.1) has a plurality of connecting protrusions (1.8) arranged at intervals. The connecting protrusions (1.8) form a transmission connecting groove (1.9) for exposing the reduction gear set (1.2). The connecting protrusions (1.8) form insertion protrusions (1.10). The limiting plate (1.6) forms a connecting groove (1.11) for the insertion protrusions (1.10) to be inserted.

5. A reduction gear having planetary gears as claimed in claim 1, characterized in that: The housing (1) includes an upper connecting shell (2.1) and a lower connecting shell (2.2). The lower connecting shell (2.2) has a positioning buckle (2.3), the upper connecting shell (2.1) has a positioning groove (2.4) for the positioning buckle (2.3) to be inserted, and the lower connecting shell (2.2) and the upper connecting shell (2.1) have screw connection holes (2.5) arranged opposite to each other.

6. A reduction gear having planetary gears as claimed in claim 5, characterized in that: The upper connecting shell (2.1) has a sealing protrusion (3.1), and the lower connecting shell (2.2) has a sealing groove (3.2) for the sealing protrusion (3.1) to be inserted into. A sealing ring (3.3) is provided in the sealing groove (3.2), and the sealing protrusion (3.1) abuts against the sealing ring (3.3).

7. A reduction gear having planetary gears as claimed in claim 5, characterized in that: Rotating guide sleeves (3.4) are inserted into the ends of the upper connecting shell (2.1) and the lower connecting shell (2.2), and the output shaft (2) and the input shaft (3) are inserted into the rotating guide sleeves (3.4).

8. A reduction gear having planetary gears as claimed in claim 5, characterized in that: The lower connecting shell (2.2) has a rotating support protrusion (4.1) which supports the bottom of the transmission seat (1.1) and is provided with guide balls (4.2). The bottom of the transmission seat (1.1) is provided with a rotating guide groove (4.3) for the balls to be inserted.

9. The speed reducer having a planetary gear according to claim 1, characterized by: The housing (1) is provided with a damper assembly (5.1), and the input shaft (3) includes a first input section (5.2) connecting the input section of the damper assembly (5.1) and a second input section (5.3) connecting the transmission seat (1.1) and the damper assembly (5.1), and the first input section (5.2) and the second input section (5.3) are engaged.

10. A reduction gear having planetary gears as claimed in claim 9, characterized in that: The damper assembly (5.1) includes a mounting housing (5.4) inside a fixed housing (1), a damping pad assembly (5.5) disposed inside the mounting housing (5.4), and a compression structure (5.6) for compressing the damping pad assembly (5.5). The damping pad assembly (5.5) includes alternately arranged damping plates (5.7) and fixed pads (5.8). The damping plates (5.7) engage with the first input segment (5.2). The compression structure (5.6) includes a compression block (5.9) disposed inside the mounting housing (5.4), an electromagnetic drive unit (5.10) for adsorbing the compression block (5.9), and an elastic element (5.11) disposed between the electromagnetic drive unit (5.10) and the compression block (5.9). When the electromagnetic drive unit (5.10) is de-energized, the elastic element (5.11) forces the compression block (5.9) to compress the damping pad assembly (5.5).

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