Motor end cover and motor
By adopting a design in which the wall thickness of the shaft root is tapered and optimizing the layout of the reinforcing ribs in the motor end cover, the problem of structural interference of traditional motor end covers in special applications is solved, and the applicability and reliability are improved.
Patent Information
- Application Number
- CN202421135519.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-22
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-05-22
AI Technical Summary
Traditional motor end caps may not meet the problems of space limitations or structural interference in certain special applications, especially when reinforcement structural interference at the root of the pulley shaft.
By optimizing the structural design of the motor end cover, a tapered wall thickness design is adopted at the root of the shaft. The wall thickness gradually decreases from the root to the end. Reinforcing ribs, diagonal ribs and reinforcing plates are set at appropriate locations to improve structural strength. and applicability.
Under the premise of ensuring the mechanical strength, the applicability and reliability of the motor cover is improved, the possibility of structural interference is reduced, and it is suitable for a special application scenario that is limited or needed to reduce weight.
Smart Images
Figure CN222395518U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, in particular to a motor end cover and a motor. Background Art
[0002] The motor end cover is an important part of the motor. Its function is to fix and seal the internal structure of the motor and provide a location for installing the pulley shaft. In traditional designs, the motor end cover is usually made of cast aluminum to ensure sufficient mechanical strength and wear resistance. However, in some special applications, such as the interference of the reinforcing rib structure at the root of the pulley shaft, when space is limited or there is interference with other components, the traditional motor end cover may not meet the specific design requirements. Utility Model Content
[0003] The main purpose of the utility model is to propose a motor end cover and a motor, aiming to improve the applicability and reliability of the motor end cover while ensuring the strength through optimization of the end cover structure, and solve the problem of interference of the reinforcing rib structure at the shaft root of the pulley.
[0004] To achieve the above purpose, the motor end cover proposed by the utility model includes:
[0005] The end cover body comprises a cover plate and a cover periphery;
[0006] An axle mounting seat is arranged in the middle of the upper surface of the cover plate;
[0007] The shaft root is arranged on the upper surface of the cover plate and is arranged beside the mounting shaft seat. The shaft root is provided with a mounting shaft hole for mounting the pulley shaft.
[0008] Wherein, the wall thickness of the shaft root portion gradually decreases in the axial direction of the mounting shaft seat and in the direction away from the cover plate.
[0009] In one embodiment, the minimum wall thickness value at the end of the shaft root is D1, the maximum wall thickness value at the root of the shaft root is D2, and 1.1≤D2 / D1≤1.3.
[0010] In one embodiment, a plurality of reinforcing ribs are provided at intervals on the circumference of the end cover body, and the plurality of reinforcing ribs are respectively connected to the mounting shaft seat, the cover plate and the cover periphery.
[0011] In one embodiment, the plurality of reinforcing ribs are arranged in pairs, and the shaft root is arranged on one of the two reinforcing ribs in the pair.
[0012] In one embodiment, the end cover body is further provided with a first oblique rib, the first oblique rib connects the cover plate and the shaft root, and the first oblique rib is arranged on the outer side of the reinforcing rib where the shaft root is located, away from the other reinforcing rib.
[0013] In one embodiment, the end cover body is further provided with a second oblique rib, the second oblique rib connects the cover plate and the shaft root, and the second oblique rib and the shaft root are provided on the same reinforcing rib.
[0014] In one embodiment, the thickness of the first oblique rib is greater than the thickness of the second oblique rib.
[0015] In one embodiment, the thickness of the first oblique rib is t1, the thickness of the second oblique rib is t2, and t1 / t2>1.2.
[0016] In one embodiment, the motor end cover is further provided with a reinforcement plate, the reinforcement plate is close to the shaft root, and the reinforcement plate connects the cover plate and the cover periphery.
[0017] In one embodiment, the thickness of the cover plate near the shaft root is greater than the thickness of the cover plate far from the shaft root.
[0018] In one embodiment, the thickness of the cover plate near the shaft root is T1, the thickness of the cover plate away from the shaft root is T2, and T1 / T2>1.2.
[0019] In one embodiment, a spring suspension portion is provided on the periphery of the cover; and / or the cover plate is further provided with a weight-reducing hole.
[0020] The utility model also provides a motor, comprising the motor end cover as described above.
[0021] The technical solution of the utility model is to design the wall thickness of the shaft root into a tapered shape, and the wall thickness of the shaft root gradually decreases from the root to the end, which not only ensures that the shaft root has sufficient strength on the end cover body, but also avoids unnecessary reinforcement ribs, thereby reducing the possibility of structural interference. This improved motor end cover design is suitable for various special application scenarios, especially when space is limited or weight needs to be reduced; through optimized design, not only the applicability of the motor end cover is improved, but also its function and performance are maintained. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0023] Figure 1 A schematic diagram of the structure of an embodiment of a motor provided by the utility model;
[0024] Figure 2 for Figure 1 A schematic structural diagram of an embodiment of a motor end cover;
[0025] Figure 3 for Figure 2 Schematic diagram of the cross-section structure in ;
[0026] Figure 4 for Figure 3 A partial enlarged view of the middle A;
[0027] Figure 5 for Figure 2 A schematic diagram of the structure from another perspective.
[0028] Description of Figure Numbers:
[0029] 100, motor; 110, pulley shaft; 200, motor end cover; 210, end cover body; 220, cover plate; 221, upper surface; 230, cover periphery; 211, reinforcing rib; 212, first oblique rib; 213, second oblique rib; 214, reinforcement plate; 215, weight-reducing hole; 231, spring suspension part; 232, end cover hole; 240, mounting shaft seat; 250, shaft root; 251, mounting shaft hole.
[0030] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0032] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.
[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0034] The motor end cover is an important part of the motor. Its function is to fix and seal the internal structure of the motor and provide a location for installing the pulley shaft. In traditional designs, the motor end cover is usually made of cast aluminum to ensure sufficient mechanical strength and wear resistance. However, in some special applications, this design may have some limitations. For example, when space is limited or there is interference with other components, the traditional motor end cover may not meet specific design requirements.
[0035] To resolve this issue, see Figure 1 In one embodiment of the present utility model, the motor end cover 200 is arranged on the main body of the motor 100, referring to Figure 2 The motor end cover 200 includes an end cover body 210, a mounting shaft seat 240 and a shaft root 250. The end cover body 210 has a cover plate 220 and a cover periphery 230. The mounting shaft seat 240 is arranged in the middle of the upper surface 221 of the cover plate 220. The shaft root 250 is arranged on the upper surface 221 of the cover plate 220 and is arranged next to the mounting shaft seat 240. The shaft root 250 is provided with a mounting shaft hole 251 for the pulley shaft 110 to be installed. The wall thickness of the shaft root 250 gradually decreases in the axial direction of the mounting shaft seat 240 and in the direction away from the cover plate 220.
[0036] The end cover body 210 is made of cast aluminum material. Of course, the cover plate 220 body can also be integrally formed by injection molding, or insert injection molding; the middle of the upper surface 221 of the cover plate 220 is provided with a mounting shaft seat 240 and a shaft root 250 arranged next to the mounting shaft seat 240, and the shaft root 250 is provided with a mounting shaft hole 251, and the mounting shaft hole 251 is used for the installation of the pulley shaft 110. The shaft root 250 extends along the axial direction, and the wall thickness of the shaft root 250 gradually decreases in the axial direction of the mounting shaft seat 240 and in the direction away from the cover plate 220.
[0037] The middle part of the cover plate 220 is provided with a mounting shaft seat 240, and the mounting shaft seat 240 has a shaft hole for the motor shaft to pass through, and the periphery of the mounting shaft seat 240 protrudes from the cover plate 220 for the bearing to be installed; the shaft root 250 is spaced apart from the mounting shaft seat 240, and the shaft root 250 is provided with a mounting shaft hole 251 for the pulley shaft 110 to be installed; the pulley shaft 110 is a pulley shaft 110, on which a belt can be installed, and under the action of the belt tension, in order to prevent the shaft root 250 from being broken or deformed under high load, in the traditional motor end cover 200 design, three reinforcing ribs 211 are usually provided around the mounting shaft hole 251 to enhance the mechanical strength of the shaft root 250 and prevent it from being broken or deformed under high load. However, in some specific application scenarios, the presence of one of the reinforcing ribs 211 will cause structural interference, which cannot meet the design requirements of specific equipment. In order to solve this problem, the wall thickness of the shaft root 250 is set to be tapered in this solution, which not only ensures sufficient strength, but also avoids unnecessary reinforcing ribs 211, thereby reducing the possibility of structural interference. The wall thickness of the shaft root 250 is set to be tapered in the extension direction, which can reduce the weight of the end cover while maintaining sufficient strength. This improved motor end cover 200 design is suitable for various special application scenarios, especially when space is limited or weight reduction is required. Through optimized design, not only the applicability of the motor end cover 200 is improved, but also its function and performance are maintained.
[0038] Reference Figure 3 and Figure 4 Specifically, the minimum wall thickness value at the end of the shaft root 250 is D1, and the maximum wall thickness value at the root of the shaft root 250 is D2, 1.1≤D2 / D1≤1.3; the minimum wall thickness should be the end of the shaft root 250 with structural integrity in the extension direction, and the limiting protrusion or groove part, even at the end position, should not be considered as the minimum wall thickness of the shaft root 250; similarly, the reinforcing rib 211 or the common part thickness at the shaft root 250 should be excluded.
[0039] Specifically, Figure 4 It is shown that the outer periphery of the end of the shaft root 250 is provided with a chamfer, so the minimum wall thickness position is the portion perpendicular to the surface of the end of the shaft root 250 and the extension line of the outer side wall.
[0040] Similarly, the maximum wall thickness position is the wall thickness at the intersection of the upper surface 211 of the end plate 220 and the outer side wall of the shaft root portion 250 .
[0041] The shaft root 250 extends along the axial direction and is tapered as a whole. The shaft root 250 needs to be installed for the pulley shaft 110. The height of the shaft root 250 and the inner diameter of the mounting hole of the shaft root 250 remain unchanged. Increasing the wall thickness at the root of the shaft root 250 can improve the structural strength of the shaft root 250.
[0042] Combination Figure 5 Furthermore, in order to avoid possible interference, the present solution also adopts other reinforcement measures to maintain sufficient structural strength. A plurality of reinforcing ribs 211 are provided at intervals on the circumference of the end cover body 210, and the plurality of reinforcing ribs 211 at least connect the cover plate 220 and the cover periphery 230; in one embodiment, the plurality of reinforcing ribs 211 are respectively connected to the mounting shaft seat 240, the cover plate 220 and the cover periphery 230; in another embodiment, the plurality of reinforcing ribs 211 connect the cover plate 220 and the cover periphery 230.
[0043] The plurality of reinforcing ribs 211 may be exposed on the upper surface 221 or the lower surface of the cover plate 220 ; they may also be embedded in the wall thickness of the cover plate 220 ; the plurality of reinforcing ribs 211 may be connected to each other, such as being connected in a cross shape by passing through the mounting shaft seat 240 ; they may also be formed as one piece with the mounting shaft seat 240 at the mounting shaft seat 240 .
[0044] Specifically, the provision of multiple reinforcing ribs 211 improves the structural strength of the end cover body 210, thereby improving the bearing capacity of the shaft root 250. Furthermore, the multiple reinforcing ribs 211 are arranged in pairs, and the shaft root 250 is arranged on one of the two paired reinforcing ribs 211. The shaft root 250 arranged on the reinforcing rib 211 has better structural strength than that arranged at other positions of the end cover body 210; the multiple reinforcing ribs 211 arranged in pairs can reduce the weight of the motor end cover 200 while ensuring the structural strength of the motor end cover 200, and the shaft root 250 and the motor end cover 200 are integrally formed and arranged on one of the reinforcing ribs 211, which is conducive to ensuring the structural stability of the shaft root 250.
[0045] Reference Figure 2 and Figure 3 Specifically, the two reinforcing ribs 211 arranged in pairs are arranged at intervals, and a hollow design is formed between the two reinforcing ribs 211, which can reduce the weight of the end cover body 210 without affecting the structural strength of the end cover body 210.
[0046] In addition, a weight-reducing hole 215 is also provided on the end cover body 210 , and the specific shape of the weight-reducing hole 215 is not limited.
[0047] In order to further improve the stress strength of the shaft root 250, a first oblique rib 212 that does not cause interference is retained on the shaft root 250. Specifically, the end cover body 210 is further provided with a first oblique rib 212, which connects the cover plate 220 and the shaft root 250, and is perpendicular to the reinforcing rib 211 where the shaft root 250 is located. The first oblique rib 212 is arranged in the same direction or opposite direction as the belt tension on the pulley, thereby providing support for the shaft root 250 and improving the stress bearing capacity.
[0048] In a further solution, a second oblique rib 213 is retained on the shaft root 250 , and the end cover body 210 is also provided with a second oblique rib 213 , which connects the cover plate 220 and the shaft root 250 , and the second oblique rib 213 and the shaft root 250 are provided on the same reinforcing rib 211 .
[0049] The first oblique rib 212 and the second oblique rib 213 are oblique supports. The first oblique rib 212 and the second oblique rib 213 are located in the middle of the shaft root 250 . The second oblique rib 213 and the shaft root 250 share a portion of the reinforcing rib 211 .
[0050] The first oblique rib 212 and the second oblique rib 213 are subjected to different forces, and therefore, the thickness of the first oblique rib 212 is greater than the thickness of the second oblique rib 213 .
[0051] Reference Figure 3 Specifically, the thickness of the first oblique rib 212 is t1, the thickness of the second oblique rib 213 is t2, and t1 / t2>1.2. The force on the first oblique rib 212 is in the same direction as the belt tension. The thickness of the first oblique rib 212 is greater than that of the second oblique rib 213, which can disperse and bear more stress and reduce the risk of stress concentration; the overall bearing capacity of the shaft root 250 can be improved, and unnecessary material use can be avoided while ensuring structural performance, thereby saving costs.
[0052] In one embodiment, the cover plate 220 and the cover periphery 230 are integrally formed; in one embodiment, the cover plate 220 and the cover periphery 230 are connected by a plurality of reinforcing ribs 211, and the cover plate 220 and the cover periphery 230 are hollowed out, so that the weight of the cover plate 220 body can be reduced to the greatest extent. The cover periphery 230 is annularly arranged, and the cover periphery 230 is provided with an end cover hole 232 and a spring hanging part 231 for fixing. The end cover hole 232 is symmetrically distributed along the periphery of the cover 230, and the spring hanging part 231 and the shaft root 250 are arranged adjacently. The place where the plurality of reinforcing ribs 211 connect the cover periphery 230 is an arc transition. In order to improve the strength of the cover plate 220 where the shaft root 250 is located, the motor end cover 200 is also provided with a reinforcing plate 214, which is close to the shaft root 250 and connects the cover plate 220 and the cover periphery 230.
[0053] The first oblique rib 212 and the second oblique rib 213 are arranged vertically, and the reinforcement plate 214 is arranged in the angle between the first oblique rib 212 and the second oblique rib 213, which is equivalent to connecting the cover plate 220 and the cover periphery 230, so that the structural strength at this location is higher, and the cover plate 220 is prevented from being broken or deformed under high load; further, at another reinforcing rib 211 where the shaft root 250 is not arranged, the cover plate 220 and the cover periphery 230 are also provided with a reinforcement plate 214 to compensate for the weakening of the structural strength that may be caused by the elimination of the oblique rib on the opposite side; because the reinforcement plate 214 connects the cover plate 220 and the cover periphery 230, while improving the structural strength, no interference problem will occur.
[0054] Reference Figure 4 Furthermore, in order to improve the structural strength of the cover plate 220, the thickness of the cover plate 220 near the shaft root 250 is greater than the thickness of the cover plate 220 away from the shaft root 250. The thickness of the cover plate 220 near the shaft root 250 is increased to further improve the force bearing performance of the shaft root 250 and withstand a higher load. Specifically, the thickness of the cover plate 220 near the shaft root 250 is T1, and the thickness of the cover plate 220 away from the shaft root 250 is T2, and T1 / T2>1.2. The ratio of T1 to T2 can be 1.3, 1.35, 1.4, 1.45, 1.5, 1.7, 1.8, 2.0, etc.
[0055] The utility model also proposes a motor 100, which includes a motor body and a motor end cover 200. The specific structure of the motor end cover 200 refers to the above-mentioned embodiment. Since the motor end cover 200 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.
[0056] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.
Claims
1. A motor end cover, characterized in that: include: The end cover body comprises a cover plate and a cover periphery; An axle mounting seat is arranged in the middle of the upper surface of the cover plate; The shaft root is arranged on the upper surface of the cover plate and is arranged beside the mounting shaft seat. The shaft root is provided with a mounting shaft hole for mounting the pulley shaft. Wherein, the wall thickness of the shaft root portion gradually decreases in the axial direction of the mounting shaft seat and in the direction away from the cover plate.
2. The motor end cover according to claim 1, characterized in that: The minimum wall thickness value at the end of the shaft root is D1, the maximum wall thickness value at the root of the shaft root is D2, and 1.1≤D2 / D1≤1.
3.
3. The motor end cover according to claim 1, characterized in that: A plurality of reinforcing ribs are arranged at intervals on the circumference of the end cover body, and the plurality of reinforcing ribs are respectively connected to the mounting shaft seat, the cover plate and the periphery of the cover.
4. The motor end cover according to claim 3, characterized in that: The plurality of reinforcing ribs are arranged in pairs, and the shaft root is arranged on one of the two reinforcing ribs in the pair.
5. The motor end cover according to claim 4, characterized in that: The end cover body is also provided with a first oblique rib, which connects the cover plate and the shaft root, and is arranged on the outer side of the reinforcing rib where the shaft root is located, away from the other reinforcing rib.
6. The motor end cover according to claim 5, characterized in that: The end cover body is further provided with a second oblique rib, which connects the cover plate and the shaft root, and the second oblique rib and the shaft root are arranged on the same reinforcing rib.
7. The motor end cover according to claim 6, characterized in that: The thickness of the first oblique rib is greater than the thickness of the second oblique rib.
8. The motor end cover according to claim 7, characterized in that: The thickness of the first oblique rib is t1, the thickness of the second oblique rib is t2, and t1 / t2>1.
2.
9. The motor end cover according to any one of claims 1 to 8, characterized in that: The motor end cover is also provided with a reinforcement plate, which is close to the shaft root and connects the cover plate and the cover periphery.
10. The motor end cover according to any one of claims 1 to 8, characterized in that: The thickness of the cover plate near the shaft root is greater than the thickness of the cover plate far from the shaft root.
11. The motor end cover according to claim 10, characterized in that: The thickness of the cover plate near the shaft root is T1, the thickness of the cover plate away from the shaft root is T2, and T1 / T2>1.
2.
12. The motor end cover according to any one of claims 1 to 8, characterized in that: A spring suspension portion is provided on the periphery of the cover; and / or the cover plate is further provided with a weight-reducing hole.
13. A motor, comprising the motor end cover according to any one of claims 1 to 12.