Connecting structure of load part and gear motor of ice maker

Abstract

The utility model relates to an ice maker, in particular to a connecting structure of a load part and a gear motor of the ice maker. A connecting structure for a load part and a speed reducing motor of an ice maker comprises a speed reducing motor shell and a cylindrical shell, the speed reducing motor shell forms a through hole for an output shaft or a main shaft of a speed reducing box to pass through, and the output shaft of the speed reducing box is rotationally fixed with the speed reducing motor shell. A fixing part which extends in the axial direction of the output shaft of the reduction gearbox is integrally formed on the reduction motor shell, the cross section of the fixing part is in an enclosed shape, the fixing part forms the vertically-through through hole, the fixing part is located on the outer side of the output shaft of the reduction gearbox, and the main shaft is fixed to the fixing part through a bearing and coaxially linked with the output shaft of the reduction gearbox. And the end part of the cylindrical shell and the fixing part are mutually sleeved and fixed. The ice maker has the advantages that the service life is prolonged, broken ice is reduced, the ice making effect is improved, and noise is reduced.

Description

Technical Field

[0001] The utility model relates to an ice maker, in particular to a connection structure between a load part of the ice maker and a reduction motor. Background Art

[0002] A Chinese patent with application number 202211257541.3 discloses a connection structure between the load part of an ice maker and a reduction motor, including a reduction box, wherein the reduction box housing forms a through hole for the reduction box output shaft to extend out, the load part includes a load housing, a main shaft for coaxial linkage with the reduction box output shaft is rotatably fixed in the load housing, the load housing includes a base and a cylindrical housing, the cylindrical housing is riveted to the base, the main shaft is fixed to the base through a bearing, and the base is fixed to the reduction box housing by bolts.

[0003] The main shaft and the output shaft of the reduction gearbox are sleeved on each other, and a plane is set on the shaft wall to achieve coaxiality and linkage. If the fixing accuracy of the base is poor, the main shaft and the output shaft of the reduction gearbox will not maintain good coaxiality. When the main shaft is in use, the output shaft of the reduction gearbox will be subjected to excessive torsion springs, which can easily lead to fatigue damage of the output shaft of the reduction gearbox, reduce its service life, and cause a certain inclination of the main shaft.

[0004] Since the cylindrical shell and the main shaft are not directly fixed, but are indirectly fixed together through multiple parts such as the base, the gearbox housing, and the gearbox output shaft, the coaxiality between the cylindrical shell and the main shaft is greatly affected by the position of the base. In addition, since the main shaft may be tilted, the size of the gap between the circumferential inner wall of the cylindrical shell and the circumferential outer wall of the spiral part of the main shaft is difficult to determine, and the spiral part and the inner wall of the cylindrical shell will interfere with each other and the size of the squeezed ice cubes will be uneven, and even crushed ice will appear. Among them, the mutual interference between the spiral part and the inner wall of the cylindrical shell will also increase the noise. Utility Model Content

[0005] The utility model aims to provide a connection structure between the load part of an ice maker and a reduction motor, which can improve the coaxiality among the output shaft of a reduction box, a cylindrical housing and a main shaft, thereby prolonging the service life, reducing ice crushing to improve the ice making effect and reducing noise.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a connection structure between the load part of an ice maker and a reduction motor, comprising a reduction motor housing and a cylindrical housing, the reduction motor housing constituting a through hole for a reduction box output shaft or a main shaft to pass through, the reduction box output shaft being rotatably fixed to the reduction motor housing, the reduction motor housing being integrally formed with a fixing portion extending axially along the reduction box output shaft and having an enclosed cross-section, the fixing portion constituting the through hole penetrating up and down, the fixing portion being located on the outside of the reduction box output shaft, the main shaft being fixed to the fixing portion via a bearing and being coaxially linked to the reduction box output shaft, the end of the cylindrical housing and the fixing portion being mutually sleeved and fixed.

[0007] The utility model forms a fixed part for positioning and fixing the cylindrical shell on the reduction motor housing (reduction box housing or cover) to eliminate the position error between the original fixed seat and the reduction motor housing, and the main shaft and the reduction box output shaft are both rotated and fixed with the reduction motor housing with the fixed part through the bearing, thereby improving the coaxiality between the cylindrical shell and the reduction box output shaft, and then ensuring the coaxiality of the cylindrical shell, the reduction box output shaft and the main shaft, thereby avoiding the reduction box output shaft from being subjected to excessive torque, and making the gap between the cylindrical shell and the spiral part of the main shaft more uniform, thereby achieving the effects of extending the service life, reducing ice crushing to improve the ice making effect and reducing noise. At the same time, the utility model also reduces the number of components and reduces the assembly steps.

[0008] Preferably, the groove wall in the middle of the through hole extends inward to form an inner convex ring, and a bearing is provided on both axial sides of the inner convex ring, and the main shaft and the output shaft of the reduction box are fixed to the fixing part through a bearing respectively. That is, the main shaft and the cylindrical shell are both fixed to the fixing part, and can be positioned with the fixing part as a reference, which can further improve the coaxiality of the main shaft and the cylindrical shell.

[0009] Preferably, the end of the output shaft of the reduction box is sleeved with the end of the main shaft, and the output shaft of the reduction box includes a thick section for matching with the bearing and a thin section for extending into the end of the main shaft. Through the above arrangement, the sizes of the two bearings respectively used to match with the main shaft and the output shaft of the reduction box can be set as large as possible, thereby ensuring the use stability of the main shaft and the output shaft of the reduction box, and making the coaxiality between the main shaft and the output shaft of the reduction box better, so as to ensure the ice-making effect and reduce noise.

[0010] Preferably, the lower end of the fixing portion extends into the housing of the reduction motor, and the output shaft of the reduction box is fixed to the lower end of the fixing portion via a bearing. By placing a bearing in the inner space of the reduction motor housing instead of the wall thickness of the reduction motor housing, the overall volume can be kept small and the upper edge height position of the fixing portion and the cylindrical housing can be reduced.

[0011] Preferably, the upper end of the circumferential outer wall of the fixing part is provided with an annular fixing groove for matching with the lower end of the cylindrical shell. By providing the fixing groove, the cylindrical shell and the fixing part are mutually sleeved, and the axial and radial positioning between the cylindrical shell and the fixing part is facilitated, thereby further improving the coaxial accuracy. Among them, the outer edge of the fixing groove and the inner edge of the lower end of the cylindrical shell have the same shape.

[0012] The utility model has the advantages of extending the service life, reducing ice crushing to improve the ice making effect and reducing noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the utility model. DETAILED DESCRIPTION

[0014] The utility model is further described below based on the accompanying drawings and specific embodiments.

[0015] Depend on Figure 1 As shown, this embodiment discloses a structure for connecting the load part of an ice maker with a reduction motor, including a reduction motor housing 1 and a cylindrical housing 2. The reduction motor housing 1 forms a through hole for the reduction box output shaft 11 to pass through. The reduction motor housing 1 is integrally formed with a fixing portion 12 extending along the axial direction of the reduction box output shaft 11. The cross section of the fixing portion 12 is enclosed to form the through hole. The fixing portion 12 is located on the circumferential outer side of the reduction box output shaft 11. The main shaft 3 and the reduction box output shaft 11 are both fixed to the fixing portion 12 through a bearing. The lower end of the main shaft 3 and the upper end of the reduction box output shaft 11 are mutually sleeved and coaxially linked. The lower end of the cylindrical housing 2 and the fixing portion 12 are mutually sleeved and fixed. Among them, the upper end of the circumferential outer wall of the fixing portion 12 is provided with an annular fixing groove for matching with the lower end of the cylindrical housing 2.

[0016] The groove wall in the middle of the through hole extends inward to form an inner convex ring 121. A bearing is provided on both sides of the inner convex ring 121. The two bearings are respectively a first bearing 31 matched with the main shaft 3 and a second bearing 13 matched with the output shaft 11 of the reduction box. The first bearing 31 is an oil-containing bearing, and the second bearing 13 is a ball bearing. A waterproof oil seal 32 is provided on the upper side of the first bearing 31, and a skeleton oil seal 14 is provided on the upper side of the second bearing 13. The skeleton oil seal 14 is located on the lower side of the inner convex ring 121. Among them, the lower end of the fixing part 12 extends into the reduction motor housing 1, and the second bearing 13 is fixed at the lower end of the fixing part 12.

[0017] Among them, the output shaft 11 of the reduction gearbox includes a thick section 111 for cooperating with the second bearing 13 and a thin section 112 for extending into the end of the main shaft 3. The outer wall of the thin section 112 and the inner hole wall of the end of the main shaft 3 are both processed with planes for cooperating with each other to achieve linkage, or the thin section 112 and the main shaft 3 are linked by a key.

[0018] The utility model has the advantages of extending the service life, reducing ice crushing to improve the ice making effect and reducing noise.

Claims

1. A structure for connecting a load part of an ice maker to a reduction motor, comprising a reduction motor housing and a cylindrical housing, wherein the reduction motor housing forms a through hole for a reduction gearbox output shaft or a main shaft to pass through, and the reduction gearbox output shaft is rotationally fixed to the reduction motor housing, characterized in that: The reduction motor housing is integrally formed with a fixing portion which extends axially along the reduction box output shaft and has an enclosed cross-section. The fixing portion constitutes the through hole which passes through the upper and lower parts. The fixing portion is located on the outside of the reduction box output shaft. The main shaft is fixed to the fixing portion through a bearing and is coaxially linked with the reduction box output shaft. The end of the cylindrical housing and the fixing portion are mutually sleeved and fixed.

2. The ice-making machine load part and reduction motor connection structure according to claim 1, characterized in that: The groove wall in the middle of the through hole extends inward to form an inner convex ring. A bearing is respectively arranged on both axial sides of the inner convex ring. The main shaft and the output shaft of the reduction box are respectively fixed to the fixing part through a bearing.

3. The ice-making machine load part and reduction motor connection structure according to claim 2, characterized in that: The end of the reduction gearbox output shaft and the end of the main shaft are sleeved with each other, and the reduction gearbox output shaft includes a thick section for matching with the bearing and a thin section for extending into the end of the main shaft.

4. The ice-making machine load part and reduction motor connection structure according to claim 2, characterized in that: The lower end of the fixing part extends into the housing of the reduction motor, and the reduction box output shaft is fixed to the lower end of the fixing part through a bearing.

5. The ice-making machine load part and reduction motor connection structure according to claim 1, 2, 3 or 4, characterized in that: The upper end of the circumferential outer wall of the fixing portion is provided with an annular fixing groove for matching with the lower end of the cylindrical shell.

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