Motor cooling fin convenient to disassemble

Abstract

The utility model relates to the technical field of motors, and discloses a motor radiating fin convenient to disassemble, which comprises a shell and a plurality of radiating fins, limit rings are arranged at two ends of the shell, a placing opening is arranged on the limit ring at one end, a sliding groove is formed between the limit ring and the shell, two ends of the radiating fins are arranged in the sliding groove in a sliding manner, and the radiating fins are arranged in the sliding groove. The cooling fins comprise arc-shaped bottom plates, fins are arranged in the middles of the bottom plates, and fixing plates are detachably arranged at the placing openings. The upper end and the lower end of the cooling fin are restrained by the limiting rings, the cooling fin is firmly fixed and can bear certain external pulling force, the pull ring is arranged on the cooling fin for hoisting operation, the cooling fin can be assembled and disassembled without a tool, and operation is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to a heat sink for an electric motor which is easy to disassemble. Background Art

[0002] An electric motor is a device that converts electrical energy into mechanical energy. It uses an energized coil (i.e., stator winding) to generate a rotating magnetic field and acts on the rotor to form a magneto-electrical rotation torque. An electric motor usually includes a motor housing, a stator and a rotor inside the housing. The motor housing is provided with a heat sink to improve the heat dissipation effect of the motor to prevent the motor from overheating. At present, the heat sink and housing of most existing motors adopt an integrated structure, which is not easy to disassemble, and is not easy to clean and maintain later.

[0003] Chinese patent CN206619996U discloses a three-phase asynchronous motor heat sink that is easy to disassemble and assemble, including a motor housing and a heat sink, a first mounting block and a second mounting block are provided at both ends of the motor housing, the first mounting block and the second mounting block are both provided with a plurality of clamping grooves, and the side walls on both sides of the clamping grooves are provided with limiting protrusions, the heat sink includes a heat sink body and heat dissipation fins evenly arranged on the heat sink body, clamping blocks are provided on both end surfaces of the heat sink body, the clamping blocks are provided with clamping holes matching the limiting protrusions, and the clamping blocks can be detachably installed in the clamping grooves through the limiting protrusions and the clamping holes.

[0004] The above technical solution has several technical problems in that the multiple heat sink bodies are connected to the engine housing by snap-on connection: first, the heat sink is not firmly fixed and cannot withstand external tension, and is easily fallen off by external force; second, the installation and disassembly are relatively cumbersome, and multiple disassembly and assembly operations require the use of tools. Utility Model Content

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] The invention discloses an easily disassembled heat sink for an electric motor, comprising a shell and a plurality of heat sinks. Limiting rings are arranged at both ends of the shell, and a placement opening is arranged on the limiting ring at one end. A slide groove is formed between the limiting ring and the shell, and both ends of the heat sink are slidably arranged in the slide groove. The heat sink comprises an arc-shaped bottom plate, fins are arranged in the middle of the bottom plate, and a fixing plate is detachably arranged at the placement opening.

[0007] Preferably, the cross-section of the limiting ring is an L-shaped structure, one side of which is detachably connected to the top of the shell, and the other side is parallel to the shell. The fixed plate includes an arc-shaped middle plate, and fan-shaped pressure plate 1 and pressure plate 2 are respectively provided at both ends of the middle plate. Pressure plate 1 is detachably connected to the end of the shell, and pressure plate 2 is in contact with the fin.

[0008] Preferably, the limiting rings on both sides of the placement opening are provided with slots, and both ends are provided with protrusions, which are inserted into the slots.

[0009] Preferably, a soft gasket is provided on the side of the second pressing plate facing the fins.

[0010] Preferably, the limiting ring is provided with a plurality of through holes one on one side parallel to the shell, and a clamping mechanism is provided on the outer side of the through hole one.

[0011] Preferably, the clamping mechanism includes a bracket, which is arranged horizontally on the outside of through hole one, and a clamping unit is threadedly connected to the middle of the bracket. The clamping unit includes a cylinder, one end of the cylinder is provided with through hole two, the other end is threadedly connected with an end cover, a pressure block is arranged in the cylinder, a ball is arranged between the pressure block and through hole two, and a spring is arranged between the end cover and the pressure block.

[0012] Preferably, arc-shaped slideways are provided on the outward sides of both ends of the heat sink.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The upper and lower ends of the heat sink of the utility model are constrained by limiting rings, are firmly fixed, and can withstand a certain external pulling force. Pull rings are arranged on the heat sink for lifting operations.

[0015] Second, the utility model can install and disassemble the heat sink without the aid of tools, and the operation is convenient and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the overall structure of the second embodiment of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the clamping mechanism of the second embodiment of the utility model.

[0019] In the figure: 1. Shell; 2. Heat sink; 3. Limiting ring; 4. Placement opening; 5. Slide groove; 6. Fixed plate; 6-1. Middle plate; 6-2. Pressing plate 1; 6-3. Pressing plate 2; 7. Slot; 8. Through hole 1; 9. Bracket; 10. Nut; 11. Cylinder; 12. Through hole 2; 13. End cover; 14. Pressing block; 15. Ball; 16. Spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and 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 position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. Embodiment 1

[0023] like Figure 1 As shown, the utility model provides a motor heat sink that is easy to disassemble, including a shell 1 and a plurality of heat sinks 2. Limiting rings 3 are arranged at both ends of the shell 1. In this embodiment, the cross-section of the limiting ring 3 is an L-shaped structure, one side of which is detachably connected to the top of the shell 1 by bolts, and the other side is parallel to the shell 1. A placement opening 4 is arranged on the limiting ring 3 at one end, and a slide groove 5 is formed between the limiting ring 3 and the shell 1. Both ends of the heat sink 2 are slidably arranged in the slide groove 5. The heat sink 2 includes an arc-shaped bottom plate, a fin is arranged in the middle of the bottom plate, and a fixing plate 6 is arranged at the placement opening 4. The fixing plate 6 includes an arc-shaped middle plate 6-1, and fan-shaped pressing plate 1 6-2 and pressing plate 2 6-3 are respectively arranged at both ends of the middle plate 6-1. The pressing plate 1 6-2 and pressing plate 2 6-3 are respectively located on both sides of the middle plate 6-1. The pressing plate 1 6-2 is detachably connected to the end of the shell 1 by bolts, and the pressing plate 2 6-3 is in contact with the fin.

[0024] In order to prevent the fixing plate 6 from loosening and displacing in the axial direction of the shell 1 and causing the fixing plate 6 to fall off, in this embodiment, slots 7 are provided on the limit rings 3 on both sides of the opening 4, and protrusions are provided at both ends of the pressing piece 6-2, which are inserted into the slots 7.

[0025] In order to prevent the second pressing plate 6-3 from making hard contact with the fins, causing damage to the fins and generating a noise source, and also to play a certain anti-loosening role on the fixing plate 6, the principle is the same as that of the spring sheet. In this embodiment, a soft gasket is provided on the side of the second pressing plate 6-3 facing the fins. Specifically in this embodiment, the soft gasket is made of rubber.

[0026] The working principle of the above technical solution is:

[0027] During installation, first install the two limit rings 3 to the two ends of the shell 1 respectively. After the initial installation, the limit rings 3 do not need to be removed unless necessary. After the limit rings 3 are installed in place, slide the heat sink 2 from the opening 4 along the axial direction of the shell 1 against the inner wall of the shell 1. After inserting one end of the heat sink 2 into the slide groove 5 at the other end, slide the two ends of the heat sink 2 along the slide groove 5 along the circumferential direction of the shell 1. In the same way, install all the heat sinks 2 in place so that the surface of the shell 1 is covered with the heat sink 2. Finally, insert the pressure plate 1 6-2 into the slot 7, the pressure plate 2 6-3 against the upper end of the fin, the middle plate 6-1 against the end of the heat sink 2, and fix the pressure plate 1 6-2 to the end of the shell 1 with bolts.

[0028] When the heat sink 2 is disassembled for cleaning and maintenance, the fixing sheet is first removed, and then the heat sink 2 is slid to the placement opening 4 in sequence and taken out.

[0029] In this embodiment, in order to further improve the disassembly efficiency, the fixing of the pressing plate 6-2 and the housing 1 can be carried out by quick-release bolts, which can be disassembled by hand, which is more convenient and quick.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. The upper and lower ends of the heat sink 2 of the utility model are constrained by the limiting ring 3, and are firmly fixed and can withstand a certain external pulling force. Therefore, a pull ring is set on the heat sink 2 for hoisting operation.

[0032] Second, the utility model can install and disassemble the heat sink 2 without the aid of tools, and the operation is convenient and quick. Embodiment 2

[0033] like Figures 2 to 3As shown, on the basis of the first embodiment, the limiting ring 3 is provided with a plurality of through holes 1 8 on one side parallel to the shell 1, and a clamping mechanism is provided on the outside of the through hole 1 8. The clamping mechanism includes a bracket 9, which is arranged across the outside of the through hole 1 8, and a through hole 3 is provided at the position of the bracket 9 corresponding to the through hole 1 8, and a nut 10 is provided at the through hole 3. A clamping unit is threadedly connected to the middle of the bracket 9, and the clamping unit includes a cylinder 11, and an external thread is provided on the outside of the cylinder 11. The cylinder 11 is threadedly connected with the nut 10, and a through hole 2 12 is provided at one end of the cylinder 11, and an end cover 13 is threadedly connected at the other end. A pressing block 14 is provided in the cylinder 11, and a ball 15 is provided between the pressing block 14 and the through hole 2 12, and a spring 16 is provided between the end cover 13 and the pressing block 14. In order to facilitate the ball 15 to roll stably on the heat sink 2, an arc-shaped slideway is provided on the outward side of both ends of the heat sink 2. The width of the slide 5 is slightly larger than the thickness of the two ends of the heat sink 2.

[0034] The working principle and beneficial effects of the above technical solution are:

[0035] When installing the heat sink 2, the clamping unit is not installed first. Since the width of the slide groove 5 is greater than the thickness of the two ends of the heat sink 2, the heat sink 2 can be easily moved in the slide groove 5. When all the heat sinks 2 are installed in place, the clamping unit is threadedly connected to the nut 10, so that the ball 15 presses the heat sink 2, thereby clamping the heat sink 2, making the heat sink 2 fit more closely to the outer side of the housing 1, ensuring the efficiency of heat conduction and preventing it from loosening. After the clamping mechanism is installed in place, it does not need to be disassembled when disassembling and reinstalling the heat sink 2.

[0036] The above are only preferred specific implementations of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An easily disassembled motor heat sink, characterized in that: The invention comprises a shell (1) and a plurality of heat sinks (2), wherein limit rings (3) are arranged at both ends of the shell (1), a placement opening (4) is arranged on the limit ring (3) at one end, a slide groove (5) is formed between the limit ring (3) and the shell (1), and both ends of the heat sink (2) are slidably arranged in the slide groove (5), the heat sink (2) comprises an arc-shaped bottom plate, a fin is arranged in the middle of the bottom plate, and a fixing plate (6) is detachably arranged at the placement opening (4).

2. The easily disassembled heat sink of an electric motor according to claim 1, characterized in that: The cross section of the limiting ring (3) is an L-shaped structure, one side of which is detachably connected to the top of the shell (1), and the other side is parallel to the shell (1). The fixing plate (6) comprises an arc-shaped middle plate (6-1), and fan-shaped pressing plate 1 (6-2) and pressing plate 2 (6-3) are respectively arranged at both ends of the middle plate (6-1). Pressing plate 1 (6-2) is detachably connected to the end of the shell (1), and pressing plate 2 (6-3) is in contact with the fin.

3. The easily disassembled heat sink of an electric motor according to claim 2, characterized in that: Slots (7) are provided on the limiting rings (3) on both sides of the placement opening (4), and protrusions are provided at both ends of the pressing sheet (6-2), which are inserted into the slots (7).

4. The easily disassembled heat sink of an electric motor according to claim 2, characterized in that: A soft gasket is provided on one side of the pressing plate 2 (6-3) facing the fin.

5. The easily disassembled heat sink of an electric motor according to claim 1, characterized in that: The limiting ring (3) is provided with a plurality of through holes (8) on one side parallel to the shell (1), and a clamping mechanism is provided outside the through hole (8).

6. The easily disassembled heat sink of an electric motor according to claim 5, characterized in that: The clamping mechanism comprises a bracket (9), the bracket (9) being arranged across the outside of the first through hole (8), a clamping unit being threadedly connected to a position on the bracket (9) corresponding to the first through hole (8), the clamping unit comprising a cylinder (11), one end of the cylinder (11) being provided with a second through hole (12), the other end being threadedly connected with an end cover (13), a pressure block (14) being arranged in the cylinder (11), a ball (15) being arranged between the pressure block (14) and the second through hole (12), and a spring (16) being arranged between the end cover (13) and the pressure block (14).

7. The easily disassembled heat sink of an electric motor according to claim 6, characterized in that: Arc-shaped slideways are provided on the outward sides of both ends of the heat sink (2).

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