Refrigerator motor end cover

Abstract

A refrigerator motor end cover disclosed by the present application at least comprises an end cover body and a protective cover, the end cover body is a stretching piece integrally formed by an iron material through a stretching process, the end cover body comprises a side wall and a top wall, the side wall and the top wall enclose to form a cavity with a bottom opening, and the top wall is stretched along a direction away from the cavity to form a bearing seat. A bearing cavity communicated with the cavity is formed in the bearing seat, a mounting portion matched with the bearing cavity in position is arranged on the side, close to the cavity, of the top wall, the end cover body is provided with a fixing portion extending outwards from the bottom of the side wall, and a plurality of positioning blocks extending in the direction away from the bearing seat are arranged on the edge of the fixing portion at intervals. The protecting cover is connected with the mounting part and used for abutting against the bearing mounted in the bearing cavity. The refrigerator motor end cover provided by the utility model has the advantages of low production cost, simple manufacturing process, high positioning precision, detachable support, small overall size, good bearing installation stability and flexible installation.

Description

Technical Field

[0001] The present application relates to the utility model, which relates to the technical field of refrigerator motor manufacturing, and in particular to a refrigerator motor end cover. Background Art

[0002] Refrigerator motors generally use shaded-pole motors, which are single-phase AC motors. Due to their simple structure and low cost, they are widely used in some small-power loads that do not require high starting torque, such as refrigerators, air conditioners, and heaters, where the main load is the fan blades. The shaded-pole motor is mainly composed of a stator assembly, a rotor assembly, and an end cover, of which the end cover includes a front cover and a rear cover, which is a fixed sealing component of the motor. On the one hand, it fixes the various components of the motor, and on the other hand, it prevents dust and moisture from entering the motor, thereby ensuring the normal operation of the motor.

[0003] In the prior art, the material of the refrigerator motor end cover is generally die-cast aluminum alloy. The aluminum die-casting process is difficult and the cost is high. In the actual mass production process of casting, the aluminum die-casting end cover not only has high requirements for the aluminum die-casting mold, but is also prone to demolding and deformation. In particular, the bearing mounting holes are prone to damage, which leads to changes in concentricity, affecting the consistency and stability of the motor's output shaft, and directly affecting the air gap between the rotor and the stator. The uneven air gap will increase electromagnetic noise and mechanical vibration. On the other hand, with the long-term use of the mold, the aluminum die-casting end cover is prone to appearance problems such as many pores and lack of material, which requires manual screening, seriously reducing production efficiency.

[0004] In the prior art, a bracket is provided on the end cover of the refrigerator motor for installing the motor and external equipment. The bracket and the end cover are integrally die-cast. On the one hand, due to the soft and brittle texture of aluminum material, the bracket often breaks during user use. On the other hand, for some special and narrow installation scenarios, the bracket structure of the end cover itself not only increases the overall size, occupies a large space, but also has poor installation flexibility.

[0005] In the prior art, the bearing installation position of the refrigerator motor is mainly achieved by riveting, and the bearing is compressed by the deformation after riveting. This structural design has some technical defects. On the one hand, the bearing restoring torque is completely determined by its deformation. If the restoring torque is too small, it is easy to cause bearing vibration and increase noise. If the restoring torque is too large, it will cause difficulty in starting. The deformation is largely limited by the processing accuracy. On the other hand, the bearing is easily dropped by riveting. Utility Model Content

[0006] In order to solve the above technical problems, the present application is proposed. The advantages of the present application are that it provides a refrigerator motor end cover with low production cost, simple manufacturing process, high positioning accuracy, detachable bracket, small overall size, good bearing installation stability and flexible installation.

[0007] In order to achieve at least one of the above advantages, the present application provides a refrigerator motor end cover, which at least includes an end cover body, wherein the end cover body is a stretched part made of iron material and formed in one piece through a stretching process, and the end cover body includes side walls and a top wall, and the side walls and the top wall together form a cavity with an open bottom, and the top wall is stretched along a direction away from the cavity to form a bearing seat, and a bearing cavity connected to the cavity is provided in the bearing seat, and a mounting portion matching the position of the bearing cavity is provided on the side of the top wall close to the cavity, and the end cover body is provided with a fixing portion extending outward from the bottom of the side wall, and a plurality of positioning blocks extending in a direction away from the bearing seat are provided at intervals on the edge of the fixing portion.

[0008] The above-mentioned refrigerator motor end cover also includes a protective cover, which is connected to the mounting portion and is used to tighten the bearing installed in the bearing cavity.

[0009] In the above-mentioned refrigerator motor end cover, the bearing seat is a hollow rotating body, and the fixing portion is provided with a plurality of mounting holes at intervals along the circumference of the side wall.

[0010] In the above-mentioned refrigerator motor end cover, the top wall is annularly recessed and stretched in a direction close to the cavity to form an annular groove, and the bearing seat is located at the center of the annular groove.

[0011] In the above-mentioned refrigerator motor end cover, a plurality of mounting holes 2 located outside the annular groove are arranged on the top wall at intervals along the circumferential direction of the bearing seat.

[0012] The above-mentioned refrigerator motor end cover also includes a bracket, which is detachably connected to the end cover body.

[0013] In the above-mentioned refrigerator motor end cover, the bracket includes a fixed end and a connecting end, the fixed end is perpendicular or approximately perpendicular to the connecting end, the fixed end is provided with a through hole matched with two adjacent mounting holes 1 on the fixing part and a groove matched with the outer surface of the side wall, and the connecting end is provided with a plurality of mounting holes 3.

[0014] In the above-mentioned refrigerator motor end cover, the mounting portion includes a plurality of circumferentially arranged rivets formed by a stamping process at the bottom of the annular groove, and the rivets are formed by extending from the edge of the slot formed by the stamping process toward the center axis of the bearing seat.

[0015] In the above-mentioned refrigerator motor end cover, the protective cover includes a flat plate adapted to be connected to the rivet buckle and an installation cavity formed by stretching the flat plate to one side, and an opening is provided at one end of the installation cavity away from the flat plate.

[0016] In the above-mentioned refrigerator motor end cover, the refrigerator motor end cover is divided into a front end cover and a rear end cover, and a side wall of the rear end cover is provided with a penetrating wire groove.

[0017] Further objectives and advantages of the present application will be fully reflected through understanding of the following description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0019] Figure 1 It is a schematic diagram of the external structure of the front end cover of the first embodiment of the refrigerator motor end cover of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the front end cover of the first embodiment of the refrigerator motor end cover of the utility model;

[0021] Figure 3 It is a cross-sectional view of the front end cover of the first embodiment of the refrigerator motor end cover of the utility model;

[0022] Figure 4 This is a schematic diagram of the protective cover structure of the first embodiment of the refrigerator motor end cover of the utility model;

[0023] Figure 5 This is a schematic structural diagram of the rear end cover of the first embodiment of the refrigerator motor end cover of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the front end cover of the second embodiment of the refrigerator motor end cover of the utility model;

[0025] Figure 7 This is a schematic diagram of the internal structure of the front end cover of the second embodiment of the refrigerator motor end cover of the utility model;

[0026] Figure 8 This is a schematic structural diagram of a rear end cover of a second embodiment of a refrigerator motor end cover of the utility model;

[0027] Fig. 9 This is a front view of the support structure of the refrigerator motor end cover of the utility model;

[0028] Fig.10 It is a side view of the support structure of the refrigerator motor end cover of the utility model. DETAILED DESCRIPTION

[0029] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0030] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0031] In the disclosure of the present invention, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0032] First embodiment

[0033] The first embodiment of the refrigerator motor end cover of the utility model is as follows Figure 1-3 The motor end cover shown is the front end cover used for the refrigerator motor. The motor front end cover includes an end cover body 1 and a protective cover 2. The end cover body 1 is made of iron. The end cover body 1 is a stretched part formed in one piece by a stretching process. The end cover body 1 is formed by stretching a flat plate made of iron in a direction perpendicular to the flat plate.

[0034] like Figure 1-2 As shown, the end cover body 1 includes a side wall 11 and a top wall 12, the side wall 11 and the top wall 12 enclose a cavity 13 with an open bottom, the top wall 12 is stretched in a direction away from the cavity 13 to form a bearing seat 14, and a bearing cavity 15 connected to the cavity 13 is provided in the bearing seat 14 for installing a bearing. In this embodiment, the bearing seat 14 is a hollow rotating body structure whose bottom is connected to the cavity 13. A mounting portion 16 matching the position of the bearing cavity 15 is provided in the cavity 13. The end cover body 1 is provided with a fixing portion 17 extending outward from the bottom of the side wall 11.

[0035] Preferably, the edge of the fixing portion 17 extending outward from the bottom of the side wall 11 is a quadrilateral structure. Eight positioning blocks 171 extending in a direction away from the bearing seat 14 are arranged at intervals on the edge of the fixing portion 17 .

[0036] Preferably, the positioning blocks 171 are evenly distributed on the edges of the four sides of the fixing portion 17, and each edge of the fixing portion 17 has two positioning blocks 171, which are used to position the motor end cover and the stator assembly, ensure the position accuracy of the motor end cover and various motor components, and ensure the concentricity of various components. The fixing portion 17 is provided with four mounting holes 172 at intervals along the circumferential direction of the bearing seat 14. Preferably, the four mounting holes 172 are evenly distributed at the corners of the four sides of the fixing portion.

[0037] The top wall 12 of the end cover body 1 is annularly recessed and stretched in a direction close to the cavity 13 to form an annular groove 18, and the bearing seat 14 is located at the center of the annular groove 18. Three mounting holes 19 located outside the annular groove 18 are arranged on the top wall 12 of the end cover body 1 along the circumferential direction of the bearing seat 14 for mounting the motor and external equipment in a narrow space, thereby improving the flexibility of motor installation.

[0038] Preferably, a position of the side wall 11 of the end cover body 1 near the mounting hole 172 is provided with a relief groove 111 formed by the side wall 11 being recessed inwardly, so as to facilitate the installation of the motor end cover.

[0039] The mounting portion 16 includes four circumferentially arranged rivets 161 formed by a stamping process at the bottom of the annular groove 18 . The rivets 161 are formed by extending the edges of four slots 162 formed by stamping and penetrating the bottom of the annular groove 18 toward the central axis of the bearing seat 14 .

[0040] Preferably, the slots 162 are evenly spaced along the circumferential direction of the annular groove 18, and the mounting portion 16 is used to connect with the protective cover 2. The bearing located in the bearing cavity 15 is compressed through the protective cover 2, which effectively compresses the oil-containing bearing and applies force evenly on all sides. The bearing is not easy to fall off, thereby ensuring the consistency of the bearing restoring torque and increasing the reliability of the motor.

[0041] like Figure 3 As shown, the top end of the bearing seat 14 is provided with an axial hole 141 for fixing and installing the shaft extension end of the motor.

[0042] like Figure 4 As shown, the protective cover 2 includes a flat plate 21 adapted to be connected with the rivet buckle and a mounting cavity 22 formed by stretching the flat plate 21 to one side, and an opening 23 is provided at one end of the mounting cavity 22 away from the flat plate. During assembly, the mounting cavity 22 is opposite to the bearing cavity 15 to accommodate the bearing, and the rivet buckle 161 is connected with the flat plate 21 to apply an axial pressing force to the bearing so that the bearing is pressed into the bearing cavity 15.

[0043] Furthermore, if Figure 5 As shown, Figure 1-3The front end cover shown is matched with the rear end cover, and the rear end cover includes an end cover body 1 and a protective cover 2. The end cover body is made of iron. The end cover body 1 is a stretched part formed in one piece by a stretching process. The end cover body 1 is formed by stretching a flat plate made of iron in a direction perpendicular to the flat plate.

[0044] The end cover body 1 includes a side wall 11 and a top wall 12, wherein the side wall 11 and the top wall 12 enclose a cavity 13 with an open bottom, and the top wall 12 is stretched in a direction away from the cavity 13 to form a bearing seat 14, and a bearing cavity 15 connected to the cavity 13 is provided in the bearing seat 14 for installing a bearing. Specifically, the bearing seat 14 is a hollow rotating body structure whose bottom is connected to the cavity 13. A mounting portion 16 matching the position of the bearing cavity 15 is provided in the cavity 13. The end cover body 1 is provided with a fixing portion 17 extending outward from the bottom of the side wall 11.

[0045] Preferably, the edge of the fixing portion 17 extending outward from the bottom of the side wall 11 is a quadrilateral structure. Eight positioning blocks 171 extending in a direction away from the bearing seat 14 are arranged at intervals on the edge of the fixing portion 17 .

[0046] More specifically, compared to the front cover, the side wall 11 of the rear cover is provided with a through wire groove 110 for connecting the wires to the motor.

[0047] It should be understood that the refrigerator motor end cover described in the first embodiment of the present application often uses an oil-containing bearing.

[0048] Second embodiment

[0049] The second embodiment of the refrigerator motor end cover of the utility model is as follows Figure 6 The motor end cover shown is the front end cover used for the refrigerator motor. The motor front end cover includes an end cover body 1a. The end cover body 1a is made of iron. The end cover body 1a is a stretched part formed in one piece by a stretching process. The end cover body 1a is formed by stretching a flat plate made of iron in a direction perpendicular to the flat plate.

[0050] like Figure 6 As shown, the end cover body 1a includes a side wall 11a and a top wall 12a, the side wall 11a and the top wall 12a enclose a cavity 13a with an open bottom, the top wall 12a is stretched in a direction away from the cavity 13a to form a bearing seat 14a, and a bearing cavity 15a connected to the cavity 13a is provided in the bearing seat 14a for installing a bearing. In this embodiment, the bearing seat 14a is a hollow rotating body structure whose bottom is connected to the cavity 13a. A mounting portion 16a matching the position of the bearing cavity 15a is provided in the cavity 13a. The end cover body 1a is provided with a fixing portion 17a extending outward from the bottom of the side wall 12a.

[0051] Preferably, the edge of the fixing portion 17a extending outward from the bottom of the side wall 11a is a quadrilateral structure. Eight positioning blocks 171a extending in a direction away from the bearing seat 14a are arranged at intervals on the edge of the fixing portion 17a.

[0052] Preferably, the positioning blocks 171a are evenly distributed on the edges of the four sides of the fixing portion 17a, and each edge of the fixing portion 17a has two positioning blocks 171a, which are used to position the motor end cover and the stator assembly, ensure the position accuracy of the motor end cover and the various parts of the motor, and ensure the concentricity of the various parts. The fixing portion 17a is provided with four mounting holes 172a at intervals along the circumferential direction of the bearing seat 14a. Preferably, the four mounting holes 172a are evenly distributed at the corners of the four sides of the fixing portion 17a.

[0053] The top wall 12a of the end cover body is annularly recessed and stretched in a direction close to the cavity 13a to form an annular groove 18a, and the bearing seat 14a is located at the center of the annular groove 18a. Three mounting holes 19a located outside the annular groove 18a are arranged on the top wall 12a of the end cover body 1a along the circumferential direction of the bearing seat 14a for mounting the motor and external equipment in a narrow space, thereby improving the flexibility of motor installation.

[0054] Furthermore, if Figure 8 As shown, Figure 6-7 The front end cover is matched with the rear end cover shown. Compared with the front end cover, the side wall 11a of the rear end cover is provided with a through wire groove 110a for connecting the wires to the motor.

[0055] It should be understood that the refrigerator motor end cover described in the second embodiment of the present application often uses a ball bearing.

[0056] like Figure 9-10 As shown, the motor end cover in this embodiment also includes a bracket 3, which is detachably connected to the end cover body. The bracket 3 includes a fixed end 31 and a connecting end 32. The fixed end 31 is perpendicular or approximately perpendicular to the connecting end 32. The fixed end 31 is provided with a through hole 33 that is compatible with two adjacent mounting holes 1 on the fixing portion 17 / 17a and a groove 34 that is compatible with the outer surface of the side wall. The connecting end 32 is provided with two mounting holes 35.

[0057] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

Claims

1. A refrigerator motor end cover, characterized in that: At least: An end cover body, wherein the end cover body is a stretched part formed in one piece from an iron material by a stretching process, the end cover body comprises a side wall and a top wall, the side wall and the top wall together form a cavity with an open bottom, the top wall is stretched in a direction away from the cavity to form a bearing seat, a bearing cavity connected to the cavity is provided in the bearing seat, a mounting portion matching the position of the bearing cavity is provided on a side of the top wall close to the cavity, the end cover body is provided with a fixing portion extending outward from the bottom of the side wall, and a plurality of positioning blocks extending in a direction away from the bearing seat are provided at intervals on the edge of the fixing portion.

2. The refrigerator motor end cover according to claim 1, characterized in that: It also includes a protective cover, which is connected to the mounting portion and is used to tighten the bearing mounted in the bearing cavity.

3. A refrigerator motor end cover according to claim 2, characterized in that: The bearing seat is a hollow rotating body, and the fixing portion is provided with a plurality of mounting holes at intervals along the circumference of the side wall.

4. The refrigerator motor end cover according to claim 3, characterized in that: The top wall is annularly recessed and stretched along a direction close to the cavity to form an annular groove, and the bearing seat is located at the center of the annular groove.

5. The refrigerator motor end cover according to claim 4, characterized in that: A plurality of mounting holes 2 located outside the annular groove are arranged on the top wall at intervals along the circumferential direction of the bearing seat.

6. The refrigerator motor end cover according to claim 5, characterized in that: It also includes a bracket, which is detachably connected to the end cover body.

7. The refrigerator motor end cover according to claim 6, characterized in that: The bracket includes a fixed end and a connecting end, the fixed end is perpendicular or approximately perpendicular to the connecting end, the fixed end is provided with a through hole matched with two adjacent mounting holes 1 on the fixing part and a groove matched with the outer surface of the side wall, and the connecting end is provided with a plurality of mounting holes 3.

8. The refrigerator motor end cover according to claim 5, characterized in that: The mounting portion includes a plurality of circumferentially arranged rivets formed at the bottom of the annular groove by a stamping process, and the rivets are formed by extending from the edge of the slot formed by the stamping process toward the direction of the central axis of the bearing seat.

9. The refrigerator motor end cover according to claim 8, characterized in that: The protective cover comprises a flat plate adapted to be connected with the rivet buckle and a mounting cavity formed by stretching the flat plate to one side, wherein an opening is arranged at one end of the mounting cavity away from the flat plate.

10. A refrigerator motor end cover according to any one of claims 1 to 9, characterized in that: The refrigerator motor end cover is divided into a front end cover and a rear end cover, and a side wall of the rear end cover is provided with a penetrating wire groove.

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