Ice maker gear reduction box

Abstract

The utility model provides a kind of ice maker gear reduction gearbox, including shell and the multistage reduction gear being arranged in shell, it is provided with the connecting portion for being connected with motor on shell, connecting portion is integrally formed on shell, connecting portion has installation cavity in, the power output shaft of motor is inserted into installation cavity and is connected with reduction gear to transmit the power of motor to reduction gear, connecting portion is inserted into motor.Incorporation with gear reduction gearbox connecting portion connects motor and gear reduction gearbox, motor assembly is installed in the end of connecting portion, connecting portion directly provides installation site, greatly improves installation precision, reduces installation complexity, power output shaft can be accurately docked with reduction gear, improves the coaxiality of both, it is favorable to improve rotation accuracy and reduce vibration, reduce abrasion and prolong service life.

Description

Technical Field

[0001] This utility model relates to an ice maker, specifically to a gear reducer for an ice maker. Background Technology

[0002] Ice makers are widely used in commercial and household applications. Their main structure includes a motor, gearbox, evaporator, condenser, and water tank. The motor provides power, which is then transmitted to subsequent mechanisms through the gearbox to complete the operation. Currently, installation requires a base bracket to mount the motor assembly, which is then secured to the gearbox housing with screws. This installation process is complex, and the use of multiple screws can lead to installation deviations due to variations in the torque applied to each screw. This further reduces the coaxiality between the motor and gearbox, increasing vibration and wear on components during use. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a gear reducer that is easy to install and can maintain good coaxiality with the motor.

[0004] This utility model provides a gear reducer, including a housing and at least two stages of reduction gears disposed inside the housing. The housing is provided with a connecting part for connecting to a motor. The connecting part is integrally formed on the housing and has a mounting cavity inside. The power output shaft of the motor passes through the mounting cavity and connects to the reduction gears. The connecting part passes through the motor.

[0005] The motor is connected to the gear reducer by a connector integrally formed with the gear reducer. The motor assembly is installed at the end of the connector, which directly provides the mounting position, greatly improving installation accuracy and reducing installation complexity. The power output shaft can accurately mate with the reduction gear, improving the coaxiality of the two, which is beneficial to improving rotational accuracy, reducing vibration, reducing wear, and extending service life.

[0006] Furthermore, the aforementioned housing includes an upper housing and a lower housing connected to each other, with a connecting portion disposed on the upper housing, forming a cylinder protruding outward from the upper housing. After the upper and lower housings are connected and closed, there is an internal cavity, in which a multi-stage reduction gear is disposed.

[0007] Furthermore, at least one bearing is provided inside the connecting part, and a bearing seat is correspondingly provided inside the connecting part.

[0008] Furthermore, a positioning protrusion is provided on the outer wall of the connecting part along the length direction, and correspondingly, the inner wall of the motor has a matching positioning groove.

[0009] Furthermore, two bearings are provided in the connecting part. The upper end face of the first bearing installed in the first bearing position is on the same horizontal plane as the top surface of the connecting part. The center of the rotor yoke of the motor is recessed to form an abutment part, which abuts against the upper end face of the first bearing. The center of the abutment part is provided with a through hole for the power output shaft to pass through, and the edge of the through hole is provided with a retaining flange that can hold the power output shaft tightly.

[0010] Furthermore, the upper housing has a ring of support protrusions for supporting the base plate of the motor.

[0011] Preferably, a support step is provided at the bottom of the connecting part away from the motor, which can cooperate with the support protrusion to jointly support the motor base plate.

[0012] Furthermore, the end of the power output shaft near the reduction gear has a groove, and a retaining ring is installed in the groove, which can abut against the bearing. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the gear reducer structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the assembly of the gear reducer and the motor of this utility model.

[0015] Figure 3 This is a schematic diagram of the internal structure of the gear reducer and motor assembly of this utility model.

[0016] Figure 4 This is an exploded view of the gear reducer and motor assembly of this utility model.

[0017] Figure 5 for Figure 4 A schematic diagram of the stator winding structure.

[0018] In the diagram, 1-motor, 2-gear reducer, 11-housing, 12-rotor yoke, 121-abutting part, 122-clamping flange, 13-magnet, 14-stator winding, 141-positioning groove, 15-power output shaft, 151-groove, 16-first bearing, 17-second bearing, 18-base plate, 181-stator bracket, 19-circlip, 21-upper housing, 211-support protrusion, 212-connecting part, 212a-positioning protrusion, 212b-first bearing position, 212c-second bearing position, 213-fastening screw hole, 214-screw, 215-supporting step, 22-lower housing, 23-reduction gear Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0024] This utility model provides a gear reducer 2, including a housing and a multi-stage reduction gear 23 disposed inside the housing. The housing is provided with a connecting part 212 for connecting with a motor 1. The connecting part 212 is integrally formed on the housing and has a mounting cavity inside. The power output shaft 15 of the motor 1 passes through the mounting cavity and connects with the reduction gear 23 to transmit the power of the motor 1 to the reduction gear 23. The connecting part 212 passes through the motor 1.

[0025] The motor 1 is connected to the gear reducer 2 by a connecting part 212 integrally formed with the gear reducer 2. The motor 1 assembly is installed at the end of the connecting part 212. The power output shaft 15 of the motor 1 passes through the mounting cavity of the connecting part 212 and connects with the reduction gear 23. The connecting part 212 positions the installation position, which greatly improves the installation accuracy. The power output shaft 15 can accurately mate with the reduction gear 23, which improves the coaxiality of the two, thereby improving the rotational accuracy of the two, reducing vibration and sway, making the operation more stable, and reducing wear and noise to extend the service life. Moreover, the motor 1 can be positioned by simply inserting the connecting part 212 into the motor 1, which reduces the complexity of the motor 1 installation.

[0026] As an improved embodiment, the aforementioned housing includes an upper housing 21 and a lower housing 22 connected to each other. A connecting portion 212 is disposed on the upper housing 21 and is a cylindrical part protruding outward from the upper housing 21. After the upper housing 21 and the lower housing 22 are connected and closed, they have an internal cavity in which a multi-stage reduction gear 23 is disposed. The upper housing 21 and the lower housing 22 are provided with shapes adapted to the layout of the internal multi-stage reduction gear 23, and are preferably integrally formed. Typically, the upper and lower housings 22 are integrally die-cast from alloy materials. The upper housing 21 and the lower housing 22 can be connected by means of screws, clips, or other fixing methods.

[0027] As an improved embodiment, to better ensure the normal rotation of the power output shaft 15, at least one bearing is provided inside the connecting part 212, and a bearing seat is correspondingly provided inside the connecting part 212. Generally, one power output shaft 15 is matched with two bearings, located at both ends of the power output shaft 15 respectively. Correspondingly, the inner wall of the connecting part 212 has a first bearing seat 212b and a second bearing seat 212c. Using two bearings can greatly ensure the positioning and rotation accuracy of the power output shaft 15 while controlling costs.

[0028] As an improved embodiment, a positioning protrusion 212a is provided on the outer wall of the connecting part 212 along the length direction. Correspondingly, the inner wall of the motor 1 has a matching positioning groove, which makes it easier to position and install the motor 1 assembly. The motor 1 is usually an external rotor motor 1, mainly including a power output shaft 15, a stator winding 14, a magnet 13, a rotor yoke 12, a housing 11, and a base plate 18 with a stator support 181. As mentioned above, the power output shaft 15 passes through the mounting cavity of the connecting part 212 and connects to the reduction gear 23. The stator winding 14 has an inner ring, and a positioning groove 141 is provided on the inner wall of the inner ring. It should be noted that the positioning protrusion 212a and the positioning groove 141 can be interchanged, that is, the positioning protrusion 212a is provided on the inner ring, and the positioning groove 141 is provided on the outer wall of the connecting part 212.

[0029] As an improved embodiment, the upper end face of the first bearing 16 mounted on the first bearing seat 212b is basically on the same horizontal plane as the top surface of the connecting part 212; the rotor yoke 12 of the motor 1 is recessed at the center to form an abutment part 121, which abuts against the upper end face of the first bearing 16. The center of the abutment part 121 is provided with a through hole for the power output shaft 15 to pass through, and the edge of the through hole is provided with a retaining flange 122, which can hold the power output shaft 15 tightly and axially limit the power output shaft 15.

[0030] As an improved embodiment, the upper housing 21 has a ring of support protrusions 211 for supporting the base plate 18 of the motor 1.

[0031] As an improved embodiment, the bottom of the connecting part 212 away from the motor 1 is provided with a support step 215, which can cooperate with the support protrusion 211 to jointly support the base plate 18 of the motor 1.

[0032] As an improved embodiment, the power output shaft 15 has a groove 151 at one end near the reduction gear 23, and a retaining ring 19 is provided in the groove 151. The retaining ring 19 can abut against the second bearing 17 installed in the second bearing seat 212c to prevent the power output shaft 15 from axially moving.

[0033] In traditional motor-gear reducer connections, all motor components are first assembled, fixed to a base bracket, and then installed into the gear reducer. The base bracket and gear reducer are then fastened with screws using the screw holes on the gear reducer. Due to a lack of precise positioning, the alignment accuracy between the motor's output shaft and the reduction gear is poor, resulting in poor operational stability, high noise, and short service life. However, in the ice maker using the gear reducer 2 of this invention, the motor 1's output shaft 15 and bearings can be directly installed in the connecting part 212 of the upper housing 21. The motor 1's base plate 18, stator winding 14, magnet 13, and rotor yoke 12 are installed in suitable positions on the outer wall of the connecting part 212. Finally, the outer casing 11 is fixed to the gear reducer 2's housing. The outer casing 11 is secured using screws 214 through the fastening screw holes 213 on both the outer casing 11 and the upper housing 21. The base plate 18 of the motor 1 is equipped with a circuit board, wiring, etc. (not shown in the figure), for electrically controlling the motor 1.

[0034] Unless otherwise specified, the materials, reagents, and experimental equipment involved in this embodiment of the utility model are all commercially available products in the field of ice makers.

[0035] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make improvements and modifications without departing from the core technology of this utility model, and such improvements and modifications should also fall within the patent protection scope of this utility model. Any changes within the meaning and scope equivalent to the claims of this utility model should be considered as included within the scope of the claims.

Claims

1. A gear reducer for an ice maker, characterized in that, The device includes a housing and at least two stages of reduction gears disposed within the housing. The housing has a connecting part for connecting to a motor. The connecting part is integrally formed on the housing and has a mounting cavity. The power output shaft of the motor passes through the mounting cavity and connects to the reduction gears. The connecting part passes through the motor.

2. The ice maker gear reducer as described in claim 1, characterized in that, The housing includes an upper housing and a lower housing that are connected to each other; the connecting part is disposed on the upper housing and is in the form of a cylinder protruding outward from the upper housing; after the upper housing and the lower housing are connected and closed, there is an internal cavity, and a reduction gear is disposed in the cavity.

3. The ice maker gear reducer as described in claim 1, characterized in that, At least one bearing is provided inside the connecting part, and a bearing seat is correspondingly provided inside the connecting part.

4. The ice maker gear reducer as described in claim 1, characterized in that, The outer wall of the connecting part is provided with a positioning protrusion along the length direction, and the inner wall of the motor has a matching positioning groove.

5. The ice maker gear reducer as described in claim 3, characterized in that, It includes a first bearing position and a second bearing position. The upper end face of the first bearing installed in the first bearing position is on the same horizontal plane as the top surface of the connecting part. The rotor yoke of the motor is recessed to form an abutment part. The abutment part abuts against the upper end face of the first bearing. The center of the abutment part is provided with a through hole for the power output shaft to pass through. The edge of the through hole is provided with a retaining flange that can hold the power output shaft tightly.

6. The ice maker gear reducer as described in claim 2, characterized in that, The housing has a ring of supporting protrusions for supporting the base plate of the motor.

7. The ice maker gear reducer as described in claim 6, characterized in that, The connecting part has a supporting step at its bottom away from the motor, which works in conjunction with the supporting protrusion to support the base plate of the motor.

8. The ice maker gear reducer as described in claim 1, characterized in that, The power output shaft has a groove at one end near the reduction gear, and a retaining spring is installed in the groove, which can abut against the bearing.

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