A shock absorbing end cap and method of installation

Abstract

The application provides a damping end cover and mounting method, comprising an end cover assembly, a limiting rotating part, a plurality of close buckle assemblies and a plurality of rebound buckle assemblies; the end cover assembly comprises a large end cover and a small end cover arranged in sequence from top to bottom, a small damping ring is arranged between the large end cover and the small end cover, and a large damping ring is arranged at the bottom edge of the large end cover; the close buckle assemblies and the rebound buckle assemblies are arranged in an interlaced manner along the circumferential direction of the large end cover, and the limiting rotating part is arranged above the large end cover; one end of the close buckle assembly is in abutment with the concave-convex structure of the limiting rotating part, and the other end of the close buckle assembly is movably connected with the large end cover; and the rebound buckle assembly is connected with the limiting rotating part. The application can ensure that the motor does not need to disassemble the end cover bearing when disassembled; the close and loose functions of the end cover are realized through the concave-convex structure, and the stability of the buckle close and loose is ensured through the rebound buckle assembly.

Description

Technical Field

[0001] This invention relates to the field of end cap technology, and in particular to a shock-absorbing end cap and its installation method. Background Technology

[0002] Since modern motors are pursuing faster and simpler manufacturing processes, and motor performance also needs to keep up with the trend of low noise and low vibration, optimizing the motor manufacturing process and solving the noise and vibration problems of motors can give them a certain competitive advantage in the market.

[0003] Firstly, during the rework of encapsulated motors, if the motor needs to be disassembled and its internal structure replaced, the traditional method involves using tools to tap the gap between the encapsulant and the end cap. This damages the encapsulant, deforms the bearings, and increases the circular runout at the bearing positions on the shaft, resulting in an unusable encapsulated stator and requiring replacement of the bearings and rotor, thus increasing the cost of rework. Secondly, mechanical assembly precision is one of the causes of generator noise and vibration. It places extremely high demands on assembly equipment and operator skills, and inherent instability is unavoidable. While improving the machining precision of the end cap and other motor structures is generally used to address resonance noise, this method is not recommended due to limitations in the machining precision of the equipment. Summary of the Invention

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this invention is to provide a shock-absorbing end cap and installation method, which effectively solves the problem of component deformation caused by repeated disassembly of the encapsulated motor, avoids noise and vibration of the motor caused by assembly inaccuracies, thereby reducing rework costs and improving the noise and vibration of the motor.

[0005] The technical solution adopted by this invention to solve its technical problem is: A shock-absorbing end cap includes an end cap assembly, a limiting rotating member, a plurality of closing latching assemblies, and a plurality of spring-loaded locking assemblies. The end cap assembly includes a large end cap and a small end cap arranged sequentially from top to bottom, with a small shock-absorbing ring disposed between the large and small end caps, and a large shock-absorbing ring disposed at the bottom edge of the large end cap. The closing latching assemblies and the spring-loaded locking assemblies are arranged alternately along the circumference of the large end cap, and the limiting rotating member is disposed above the large end cap. One end of each closing latching assembly abuts against the concave-convex structure of the limiting rotating member, and the other end of the closing latching assembly is movably connected to the large end cap. The spring-loaded locking assemblies engage with the limiting rotating member.

[0006] As a further improvement of the present invention: the limiting rotating component is connected to the large end cap mounting post of the large end cap via the limiting rotating component mounting ring at the bottom; the concave-convex structure includes a limiting protruding surface and a limiting recessed surface, the limiting protruding surface and the limiting recessed surface are arranged alternately around the outer side of the limiting rotating component mounting ring, the limiting protruding surface and the limiting recessed surface alternately abut against one end of the clamping buckle assembly when the limiting rotating component is rotated; a limiting slot is provided below the limiting recessed surface, the limiting slot engages with the spring-loaded clamping assembly when the limiting protruding surface abuts against one end of the clamping buckle assembly.

[0007] As a further improvement of the present invention: the fastening buckle assembly includes a buckle base, a buckle push rod, a buckle spring, a rotating hinge, and a buckle; the buckle base is provided with a buckle push rod placement groove, the buckle push rod is disposed in the buckle push rod placement groove, the buckle spring is disposed on the buckle push rod, one end of the buckle push rod extends out of the buckle push rod placement groove and is rotatably connected to one end of the rotating hinge, the other end of the buckle push rod extends out of the buckle push rod placement groove and abuts against the concave-convex structure, and the other end of the rotating hinge is rotatably connected to one end of the buckle.

[0008] As a further improvement of the present invention: a connecting hole is provided on the edge of the large end cap corresponding to the position of the buckle, and the connection point of the rotating hinge with the buckle is rotatably disposed in the connecting hole through a connecting shaft.

[0009] As a further improvement of the present invention: a push rod limiting surface is provided in the middle of the buckle push rod placement groove, and a spring limiting surface is provided at the edge of the buckle push rod protruding from the buckle push rod placement groove; the buckle spring is disposed between the push rod limiting surface and the spring limiting surface.

[0010] As a further improvement of the present invention: a snap-fit ​​cover is provided above the snap-fit ​​base, a movement groove is provided on the snap-fit ​​cover, and a push block protruding from the movement groove is provided at the other end of the snap-fit ​​push rod.

[0011] As a further improvement of the present invention: the spring-loaded clamping assembly includes a spring-loaded base, in which a large spring, a small spring, a spring sheet, a clamping push rod, and a spring-loaded push rod are disposed; the large spring and the spring sheet are sequentially disposed on the clamping push rod, the large spring being disposed at one end near the spring-loaded base, one end of the clamping push rod extending out of one side of the spring-loaded base and engaging with the limiting latch, and the other end of the clamping push rod extending out of the other side of the spring-loaded base; the small spring is disposed within the spring sheet, one end of the spring-loaded push rod is connected to the small spring, the other end of the spring-loaded push rod passes through the spring sheet, and the other end of the spring-loaded push rod extends out of the other side of the spring-loaded base.

[0012] As a further improvement of the present invention: a locking groove is provided on the inner wall of the spring base near the side of the spring push rod, and a locking part is provided on the side of the spring corresponding to the locking groove; an installation hole is provided on the inner wall of the spring base near the side of the locking push rod, and a spring clip is provided on the side of the spring corresponding to the installation hole.

[0013] As a further improvement of the present invention: the clamping push rod is provided with a spring contact surface, and the large spring is disposed between one side of the rebound base and the spring contact surface; the rebound push rod is provided with a limiting inclined groove, and the spring limiting inclined groove abuts against the spring.

[0014] A method for installing a shock-absorbing end cap, wherein the shock-absorbing end cap as described in any of the above-mentioned embodiments is used, and the method further includes the following steps: (1) Determine the natural frequency range of motor noise and vibration based on actual tests; (2) Adjust the hardness range of the large and small damping rings in the end cover assembly according to the natural frequency range to eliminate or adjust the natural frequency of the motor; (3) Assemble the end cap assembly so that the shock absorber ring is inserted into the end cap; (4) Assemble the locking buckle assembly and install it on the large end cap; (5) Assemble the spring-loaded clamping assembly and install it on the large end cap; (6) Install the limiting rotating component on the large end cover; (7) When the end cover is closed, rotate the limiting protrusion of the limiting rotating part to contact the buckle push rod of the closing buckle assembly, and then push the buckle push rod of the spring-loaded buckle assembly into the limiting slot of the limiting rotating part to achieve the clamping posture; when the end cover is loosened, press down the spring-loaded push rod of the spring-loaded buckle assembly, retract the buckle push rod, and then rotate the limiting rotating part to make the limiting recessed surface contact the buckle push rod of the closing buckle assembly to achieve the buckle release.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The end cover in this invention has a detachable structure, which adopts a large and small end cover detachable structure. This ensures that when the motor is disassembled, only the large end cover is removed, and the bearing can remain in the small end cover without disassembly. This avoids the shaft and bearing being deformed by impact during disassembly. 2. The end cap in this invention has a shock-absorbing structure. A shock-absorbing rubber ring is placed between the large and small end caps and between the stator molding compound and the large end cap. This can reduce the impact on the rotor assembly and bearings during motor operation, thus preventing self-resonance and noise vibration problems. 3. The end cover in this invention has a shock-absorbing structure. By adding a shock-absorbing rubber ring between the large end cover and the small end cover, the vibration excitation of the rotor can be effectively reduced and diffused outward when the motor is running under load. Furthermore, by changing the hardness of the rubber ring, the natural frequency of the noise between the motor and the load can be adjusted, thereby improving the noise problem caused by resonance between the motor and the load. 4. The end cap in this invention has an adjustable clamping structure. A limiting rotating component, an adjustable closing buckle assembly, and an adjustable spring-loaded clamping assembly are installed on the top of the large end cap. The concave and convex structure of the limiting rotating component restricts the posture of the buckle, thereby realizing the closing and opening functions of the end cap. The spring-loaded clamping assembly restricts the rotation of the limiting rotating component, thereby ensuring the stability of the buckle closing and opening. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the shock-absorbing end cap structure of the present invention.

[0017] Figure 2 This is an exploded view of the end cap assembly of the present invention.

[0018] Figure 3 This is a schematic diagram of the large end cap structure of the present invention.

[0019] Figure 4 This is a bottom view of the large end cap of the present invention.

[0020] Figure 5 This is a schematic diagram of the small end cap structure of the present invention.

[0021] Figure 6 This is a schematic diagram of the large shock absorber structure of the present invention.

[0022] Figure 7 This is a schematic diagram of the limiting rotation component structure of the present invention.

[0023] Figure 8 This is a schematic diagram of the injection-molded stator structure of the present invention.

[0024] Figure 9 This is a schematic diagram of the snap-lock release mechanism of the present invention.

[0025] Figure 10 This is a schematic diagram of the snap-fit ​​mechanism of the present invention.

[0026] Figure 11 This is a schematic diagram of the shock-absorbing end cap being closed according to the present invention.

[0027] Figure 12 This is a schematic diagram of the shock-absorbing end cap being loosened according to the present invention.

[0028] Figure 13 This is an exploded view of the locking buckle assembly of the present invention.

[0029] Figure 14This is a schematic diagram of the clamping buckle assembly structure of the present invention.

[0030] Figure 15 This is a diagram showing the contact state between the snap-fit ​​push rod and the limiting recessed surface of the present invention.

[0031] Figure 16 This is a diagram showing the contact state between the snap-fit ​​push rod and the limiting protrusion surface of the present invention.

[0032] Figure 17 This is an exploded view of the spring-loaded clamping assembly of the present invention.

[0033] Figure 18 This is a schematic diagram of the movement of the spring sheet of the present invention as it snaps into the mounting hole to the left.

[0034] Figure 19 This is a schematic diagram of the movement of the spring sheet to the right, locking it in the slot according to the present invention.

[0035] Figure 20 This is a schematic diagram of the spring-loaded clamping assembly resetting according to the present invention.

[0036] Explanation of reference numerals in the attached figures: 1-End cap assembly; 2-Limiting rotating component; 3-Clamping buckle assembly; 4-Spring-back clamping assembly; 11-Large end cap; 12-Small end cap; 13-Small shock absorber ring; 14-Large shock absorber ring; 15-Injection molded stator; 21-Concave-convex structure; 22-Limiting rotating component mounting ring; 111-Large end cap mounting post; 211-Limiting protruding surface; 212-Limiting recessed surface; 221-Limiting bayonet; 23-Circular through hole; 24-Circular Rotating component; 241-Knurling process; 31-Snap-on base; 32-Snap-on push rod; 33-Snap-on spring; 34-Rotating hinge; 35-Snap-on; 112-Connecting hole; 113-Connecting shaft; 36-Snap-on push rod placement slot; 361-Push rod limiting surface; 362-Spring limiting surface; 37-Snap-on cover; 371-Movement groove; 372-Snap-on screw; 373-Snap-on spring washer; 321-Push block 322-Reinforcing rib; 323-Notch; 324-Through hole; 325-Front stepped surface; 326-Rear stepped surface; 151-Snap-on mounting slot; 41-Rebound base; 42-Large spring; 43-Small spring; 44-Spring leaf; 45-Clamping push rod; 46-Rebound push rod; 411-Clamping slot; 441-Clamping part; 412-Mounting hole; 442-Spring leaf clip; Clamping push rod mounting hole 413; 414- Springback push rod mounting hole; 451-Spring contact surface; 461-Limiting inclined groove; 462-Small spring mounting post; 47-Springback cover; 471-Springback screw; 472-Springback spring washer; 114-Internal thread post; 115-Limiting rotating part mounting post; 116-Large end cover stop ring; 117-Large rubber ring mounting ring; 121-Small end cover stop ring; 141-Auxiliary clamping rubber pellet; 142-Rubber ring plug fastening. Detailed Implementation

[0037] The present invention will now be further described in conjunction with the accompanying drawings and embodiments: Example

[0038] This embodiment provides the following: Figure 1-20 The diagram shows a shock-absorbing end cap, comprising an end cap assembly 1, a limiting rotating member 2, several closing latch assemblies 3, and several spring-loaded clamping assemblies 4. The end cap assembly 1 includes a large end cap 11 and a small end cap 12 arranged sequentially from top to bottom, with a small shock-absorbing ring 13 disposed between the large end cap 11 and the small end cap 12, and a large shock-absorbing ring 14 disposed at the bottom edge of the large end cap 11. The closing latch assemblies 3 and the spring-loaded clamping assemblies 4 are arranged alternately along the circumference of the large end cap 11, and the limiting rotating member 2 is disposed above the large end cap 11. One end of the closing latch assembly 3 abuts against the concave-convex structure 21 of the limiting rotating member 2, and the other end of the closing latch assembly 3 is movably connected to the large end cap 11. The spring-loaded clamping assemblies 4 are engaged with the limiting rotating member 2.

[0039] In this embodiment, as shown in the appendix Figure 2 As shown, the shock-absorbing end cover adopts a separate structure of large and small end covers, reducing the deformation of parts caused by disassembly impact. Compared with the rigid contact between the stator, rotor and end cover of the traditional motor, the present invention adds a shock-absorbing rubber ring between the large and small end covers 12 to achieve elastic contact, which can reduce the deformation of rotor components and bearings caused by the impact during motor operation, and improve the noise and vibration problems of the motor itself. The added rubber ring also reduces the outward diffusion of vibration excitation during rotor operation, which can adjust the solid frequency excited between the motor and the load and prevent resonance noise. In this embodiment, the shock-absorbing end cover also adopts a structure with adjustable closing and opening posture. The concave and convex structure 21 of the limiting rotating part 2 realizes the closing and opening function of the end cover by limiting the posture of the push rod in the closing buckle assembly 3. The spring-loaded clamping assembly 4 can limit the rotation of the limiting rotating part 2. By locking the limiting rotating part 2 during rotation, the stability of the push rod in the closing buckle assembly 3 is ensured.

[0040] The connection relationships of the limiting rotating component 2, the large end cap 11, the closing buckle assembly 3, and the spring-loaded clamping assembly 4 in this embodiment will be described in further detail below, as shown in the attached diagram. Figure 7 , 11As shown in Figure -12: The limiting rotating component 2 is connected to the large end cap mounting post 111 of the large end cap 11 via the limiting rotating component mounting ring 22 at the bottom; the concave-convex structure 21 includes a limiting protruding surface 211 and a limiting recessed surface 212, the limiting protruding surface 211 and the limiting recessed surface 212 are arranged alternately around the outer side of the limiting rotating component mounting ring 22, the limiting protruding surface 211 and the limiting recessed surface 212 alternately abut against one end of the clamping buckle assembly 3 when the limiting rotating component 2 is rotated; a limiting slot 221 is provided below the limiting recessed surface 212, the limiting slot 221 engages with the spring-loaded clamping assembly 4 when the limiting protruding surface 211 abuts against one end of the clamping buckle assembly 3. Therefore, when the end cap is closed, the closing buckle assembly 3 abuts against the limiting protrusion 211, and at the same time, the spring-loaded clamping assembly 4 engages with the limiting rotating part 2 through the limiting slot 221 to achieve the clamping of the end cap. When the end cap is released, the clamping state is released to achieve the release of the end cap.

[0041] The limiting rotating member 2 in this embodiment will be described in further detail below, as shown in the attached figure. Figure 7 As shown, the limiting rotating part 2 is mainly divided into three parts, with a smooth through hole 23 in the middle. The first part is a circular rotating component 24, which is positioned above the limiting rotating component mounting ring 22. The outer circumference of the circular rotating component 24 has a knurled finish 241, mainly used for manually rotating the limiting rotating component 2 to increase friction. The second part is a concave-convex ring structure (i.e., concave-convex structure 21), which mainly contacts the latching push rod 32 of the clamping buckle assembly 3, restricting the extension and retraction of the latching push rod 32. The third part is the limiting rotating component mounting ring 22, which has four evenly distributed square through holes (i.e., limiting slots 221) at its bottom. The limiting slots 221 are located below the limiting recessed surface 212, mainly used to clamp the push rod 45 into place, thereby locking the limiting rotating component 2, restricting its rotation, and thus clamping the end cap. The smooth circular through hole 23 in the middle allows for axial tightening by the nut in the radial direction, restricting the vertical movement of the limiting rotating component 2 while also limiting its axial rotation.

[0042] The structure of the locking and latching components 13-16 in this embodiment will be described in further detail, as shown in the attached figure. Figure 1As shown, the locking buckle assembly 3 includes a buckle base 31, a buckle push rod 32, a buckle spring 33, a rotating hinge 34, and a buckle 35. The buckle base 31 is provided with a buckle push rod placement groove 36. The buckle push rod 32 is disposed in the buckle push rod placement groove 36. The buckle spring 33 is disposed on the buckle push rod 32. One end of the buckle push rod 32 extends out of the buckle push rod placement groove 36 and is rotatably connected to one end of the rotating hinge 34. The other end of the buckle push rod 32 extends out of the buckle push rod placement groove 36 and abuts against the concave-convex structure 21. The other end of the rotating hinge 34 is rotatably connected to one end of the buckle 35.

[0043] Based on the above structure, the movable connection relationship between the other end of the locking buckle assembly 3 and the large end cover 11 in this embodiment will be described in further detail, as shown in the attached figure. Figure 1-4 As shown in Figures 8-10, a connecting hole 112 is provided on the edge of the large end cap 11 at the position corresponding to the buckle 35. The connection point of the rotating hinge 34 and the buckle 35 is rotatably disposed in the connecting hole 112 via a connecting shaft 113. Therefore, when the buckle assembly 3 is tightened, one end of the buckle push rod 32 abuts against the limiting protrusion 211, and at the same time, one end of the spring-loaded clamping assembly 4 engages with the limiting slot 221 to achieve tightening. In this process, to further ensure the stability of the end cap tightening, as shown in the attached figure... Figure 9-10 As shown, at the same time, the other end of the buckle push rod 32 extends outward, causing one end of the rotating hinge 34 to tilt away from the large end cover 11, thereby causing the other end of the rotating hinge 34 to move closer to the large end cover 11, and snapping the buckle 35 into the buckle mounting groove 151 of the outer shell (i.e., the injection molded stator 15) of the end cover assembly 1. This can prevent the shock-absorbing end cover from rotating or shifting vertically after it is closed, and further ensure the stability of the end cover.

[0044] The snap-fit ​​push rod placement slot 36 in this embodiment will be described in further detail, as shown in the attached document. Figure 1 As shown, a push rod limiting surface 361 is provided in the middle of the snap-fit ​​push rod placement groove 36, and a spring limiting surface 362 is provided near the protruding edge of the snap-fit ​​push rod 32. The snap-fit ​​spring 33 is disposed between the push rod limiting surface 361 and the spring limiting surface 362. The spring limiting surface 362 is used to limit the movement of the snap-fit ​​spring 33, and the push rod limiting surface 361 is used to limit the movement of the snap-fit ​​push rod 32, preventing it from disengaging from the snap-fit ​​push rod placement groove 36.

[0045] To protect the internal latching push rod 32 and latching spring 33, as shown in the attached document... Figure 13-16As shown, a snap-fit ​​cover 37 is provided above the snap-fit ​​base 31. The snap-fit ​​cover 37 has a movement groove 371, and the other end of the snap-fit ​​push rod 32 has a pushing block 321 protruding from the movement groove 371. The pushing block 321 slides along the movement groove 371, and its contact surface is arc-shaped to reduce friction when sliding with the limiting rotating part 2. A reinforcing rib 322 is provided at the connection between the pushing block 321 and the snap-fit ​​push rod 32 to prevent deformation of the contact arc surface. A snap-fit ​​screw 372 passes through the snap-fit ​​cover 37 and the snap-fit ​​base 31, and is threaded to the internally threaded post 114 on the large end cover 11, fixing the entire snap-fit ​​assembly 3 to the large end cover 11. A snap-fit ​​spring washer 373 is provided between the snap-fit ​​screw 372 and the snap-fit ​​cover 37.

[0046] The latching push rod 32 in this embodiment will be described in further detail, as shown in the attached figure. Figure 13-14 As shown, the other end of the snap-fit ​​push rod 32 has a notch 323, and through holes 324 are opened on both sides of the notch 323. The rotating hinge 34 is connected to the snap-fit ​​push rod 32 by means of a threaded pin. A connecting shaft 113 is set at the connection between the rotating hinge 34 and the snap-fit ​​35 to realize the rotation between the snap-fit ​​35 and the rotating hinge 34. There are two stepped surfaces in the middle of the snap-fit ​​push rod 32. When the front stepped surface 325 is installed, it corresponds to the spring limiting surface 362 in the snap-fit ​​push rod placement slot 36, which is used to limit the contraction and extension of the snap-fit ​​spring 33 after installation. The rear stepped surface 326 has the same structure as the front stepped surface 325 and is set on one side of the front stepped surface 325. The function of the rear stepped surface 326 is to balance the snap-fit ​​push rod 32 and prevent the snap-fit ​​push rod 32 from wobbling back and forth.

[0047] The snap-fit ​​spring 33 in this embodiment will be described in further detail, as shown in the attached figure. Figure 13 , 15 As shown in -16, the function of the snap spring 33 is to fit into the snap push rod 32 and install it on the snap base 31. It is used to compress and retract the snap push rod 32 when it is pushed outward by force, so as not to affect the movement of the push rod. When the force on the push rod is removed, it can extend to apply a pushing force to reset the push rod.

[0048] The buckle 35 in this embodiment will be described in further detail, as shown in the attached figure. Figure 13 As shown, its shape is similar to a "step" when viewed from the left. The bottom of the buckle 35 is an inverted "T" shape, which is used to fasten it to the injection molded stator 15. The corresponding injection molded stator 15 also has an inverted "T" shaped groove (i.e., buckle mounting groove 151) on the outside. When the buckle 35 is fastened here, it can prevent the shock-absorbing end cover from rotating or shifting vertically after it is fastened.

[0049] The spring-loaded locking component 4 in this embodiment will be described in further detail below, as shown in the attached figure. Figure 17-20As shown, the spring-loaded clamping assembly 4 includes a spring-loaded base 41, within which are disposed a large spring 42, a small spring 43, a spring sheet 44, a clamping push rod 45, and a spring-loaded push rod 46. The large spring 42 and the spring sheet 44 are sequentially disposed on the clamping push rod 45. The large spring 42 is disposed at one end near the spring-loaded base 41. One end of the clamping push rod 45 extends out of one side of the spring-loaded base 41 and engages with the limiting latch 221, while the other end of the clamping push rod 45 extends out of the other side of the spring-loaded base 41. The small spring 43 is disposed within the spring sheet 44. One end of the spring-loaded push rod 46 is connected to the small spring 43, while the other end of the spring-loaded push rod 46 passes through the spring sheet 44 and extends out of the other side of the spring-loaded base 41.

[0050] Specifically, the locking push rod 45 is used to engage with the limiting slot 221 to tighten the limiting rotating part 2 and the large end cover 11; when loosening, the frame rebound push rod 46 only needs to be pressed inward, and the locking push rod 45 can be retracted through the cooperation of the above structures, thereby loosening the limiting rotating part 2.

[0051] The spring-loaded base 41 in this embodiment will be described in further detail, as shown in the attached figure. Figure 17-20 As shown, the inner wall of the spring base 41 is provided with a locking groove 411 on the side near the spring push rod 46, and the spring 44 is provided with a locking part 441 on the side corresponding to the locking groove 411; the inner wall of the spring base 41 is provided with a mounting hole 412 on the side near the locking push rod 45, and the spring 44 is provided with a spring clip 442 on the side corresponding to the mounting hole 412. When the clamping push rod 45 is engaged in the limiting slot 221, the spring 44 shifts to the left as the clamping push rod 45 moves, smoothly engaging the spring clip 442 into the mounting hole 412. When it is necessary to release the clamping push rod 45, the return push rod 46 is pressed down. The spring 44 shifts to the right as the return push rod 46 moves, causing the spring clip to disengage from the mounting hole 412. At the same time, the locking part 441 of the spring 44 engages in the locking groove 411. Due to the elasticity of the large spring 42, the clamping push rod 45 disengages from the clamping push rod 45 clip 35 and resets. The return push rod 46 also resets due to the elasticity of the small spring 43. In addition, the inner side of the base is provided with a clamping push rod mounting hole 413, and the outer side is provided with a clamping push rod mounting hole 413 and a return push rod mounting hole 414.

[0052] The clamping push rod 45 and the springback push rod 46 in this embodiment will be described in further detail, as shown in the attached figure. Figure 17-20As shown, the clamping push rod 45 is provided with a reed contact surface 451, and the large spring 42 is disposed between one side of the rebound base 41 and the reed contact surface 451; the rebound push rod 46 is provided with a limiting inclined groove 461, and the limiting inclined groove 461 of the reed 44 abuts against the reed 44. The groove structure of the reed contact surface 451 can limit the large spring 42 between the reed contact surface 451 and the rebound base 41, and the clamping push rod 45 clamps the reed 44 through interference fit to limit the forward and backward movement of the reed 44; the front end of the rebound push rod 46 is provided with a small spring mounting post 462 for mounting the small spring 43, and the limiting inclined groove 461 provided in the middle part is used for limiting the left and right movement of the reed 44.

[0053] The reed 44 in this embodiment will be further described in detail below, as shown in the attached Figure 17 As shown, the reed 44 is in a C-shape, the front end is provided with a clamping push rod clamping hole 443 and a small spring mounting post 462, the left rear end is provided with a reed buckle 442, which is used for clamping the reed 44 on the rebound base 41 by clamping the reed buckle 442 into the mounting hole 412, the rear end is provided with mounting holes for the clamping push rod 45 and the rebound push rod 46, the right rear end is provided with a clamping portion 441 longer than the right front end, and the rebound reset of the push rods is achieved by clamping the clamping portion 441 into the clamping slot 411.

[0054] The rebound base 41 is further provided with a rebound cover 47 for protecting internal components of the rebound base 41. Similarly, the entire rebound clamping assembly 4 is disposed on the large end cover 11 by a rebound screw 471 passing through the rebound cover 47 and the rebound base 41 to be connected with the internally threaded post 114 on the large end cover 11, and a rebound spring washer 472 is further disposed between the rebound screw 471 and the rebound cover 47.

[0055] Next, the detailed structure of the end cover assembly 1 in this embodiment will be further described. In this embodiment, as mentioned above and as shown in the attached Figure 2 As shown, it consists of a large end cover 11, a small end cover 12, a small damping ring 13, and a large damping ring 14.

[0056] Wherein, the large end cover 11 is shown in the attached Figure 1-4 As shown, the top of the large end cover 11 is provided with a limiting rotating member mounting post 115 for mounting the limiting rotating member 2; and a plurality of internally threaded posts 114 for mounting the fastening buckle assembly 3 and the rebound clamping assembly 4; the bottom of the large end cover 11 is provided with a downwardly recessed large rubber ring mounting ring 117 and a large end cover stop ring 116; the large rubber ring mounting ring 117 is used for mounting the large damping ring 14, and the large end cover stop ring 116 is used for mounting and clamping the small end cover 12.

[0057] Wherein, the small end cover 12 is shown in the attached Figure 5As shown, it is shaped like a "hat" with a small end cap stop ring 121 on the outside. Its shape is intersected with the large end cap stop ring 116 of the large end cap 11 to prevent the small end cap 12 from rotating when the shock-absorbing end cap is installed on the motor. The small end cap 12 can be separated from the large end cap 11, and only the large end cap 11 needs to be removed during disassembly.

[0058] Among them, the large shock absorber 14 is shown in the attached image. Figure 6 As shown, an auxiliary clamping rubber granule 141 is arranged around its outer side. When the shock-absorbing end cover is installed, the auxiliary clamping rubber granule 141 can be compressed and deformed, which can make the end cover better fit into the inner edge of the injection molded stator 15. The bottom inner side of the large shock-absorbing ring 14 has a rubber ring plug 142, which can make the large shock-absorbing ring 14 better fit into the end cover. The large shock-absorbing ring 14 also has a radial shock-absorbing function.

[0059] Among them, the small shock absorber coil 13 is attached. Figure 2 As shown, the small damping ring 13 is installed on the outside of the stop ring between the large end cover 11 and the small end cover 12, that is, it covers the outside of the large end cover stop ring 116 and the small end cover stop ring 121. The height of the small damping ring 13 is slightly higher than the height of the stop ring. When subjected to impact, it can be axially compressed to play a damping role. Example

[0060] This embodiment provides the following: Figure 1-20 The method for installing a shock-absorbing end cap, as shown in Embodiment 1 above, further includes the following steps: (1) Determine the natural frequency range of motor noise and vibration based on actual tests; (2) Adjust the hardness range of the large damping ring 14 and the small damping ring 13 in the end cover assembly 1 according to the inherent frequency range, so that the motor can eliminate or adjust its inherent frequency. (3) Assemble the end cap assembly 1 so that the shock absorber ring is inserted into the end cap; (4) Assemble the clamping buckle assembly 3 and install it on the large end cap 11; (5) Assemble the spring-loaded clamping assembly 4 and install it on the large end cap 11; (6) Install the limiting rotating part 2 on the large end cover 11; (7) When the end cap is closed, rotate the limiting protrusion 211 of the limiting rotating part 2 to contact the buckle push rod 32 of the closing buckle assembly 3, and then push the buckle push rod 45 of the spring-loaded buckle assembly 4 into the limiting slot 221 of the limiting rotating part 2 to achieve the clamping posture; when the end cap is loosened, press down the spring-loaded push rod 46 of the spring-loaded buckle assembly 4, retract the buckle push rod 45, and then rotate the limiting rotating part 2 so that the limiting recess 212 contacts the buckle push rod 32 of the closing buckle assembly 3 to achieve the buckle 35 being released.

[0061] In this embodiment, (3) the assembly method of the middle end cover assembly 1 is as follows: the small shock absorber 13 is put on the small end cover 12 and then installed on the large end cover 11 so that the stop rings of the large end cover 11 and the small end cover 12 are misaligned and aligned, and then the large shock absorber 14 is snapped into the large rubber ring clamping ring of the large end cover 11.

[0062] In this embodiment, the assembly method of the fastening buckle assembly 3 of (4) is as follows: the buckle spring 33 is first put into the buckle push rod 32, and then the whole assembly is installed into the buckle push rod placement groove 36 of the buckle base 31. The rear end face of the front stepped surface 325 of the buckle push rod 32 contacts the push rod limiting surface 361 on the buckle push rod placement groove 36, and the front end of the buckle spring 33 contacts the spring limiting surface 362 of the buckle push rod placement groove 36. Then the buckle cover 37 is closed and installed on the large end cover 11 using screws and spring washers. After the base is installed without looseness, the buckle 35 is connected to the buckle push rod 32 by rotating the hinge 34.

[0063] When the component is subjected to a thrust, the motion is as follows: Figure 15-16 As shown, when the rear end of the latching push rod 32 is subjected to force (the rotation of the limiting rotating part 2 causes the limiting protrusion 211 to move and abut against the latching push rod 32), the latching push rod 32 extends outward, and the latching spring 33 clamps and compresses; after the latching push rod 32 is no longer subjected to force (the rotation of the limiting rotating part 2 causes the limiting recess 212 to move and abut against the latching push rod 32), the latching spring 33 extends, generating tension to push the latching push rod 32 back to its original position.

[0064] In this embodiment, the installation method of the spring-loaded clamping assembly 4 of (5) is as follows: the limiting inclined groove 461 of the spring-loaded push rod 46 faces the right side of the spring sheet 44, passes through the mounting hole 412 of the spring-loaded push rod 46, and then inserts the clamping push rod 45. The base boss of the clamping push rod 45 faces the left end of the spring sheet 44 and is inserted into the mounting hole 412 of the clamping push rod 45. Then, the small spring 43 is installed between the small spring 43 post on the spring-loaded push rod 46 and the small spring mounting post 462 of the spring sheet 44. After the push rod assembly is completed, the large spring 42 is put into the front end of the clamping push rod 45 and installed on the spring-loaded base 41. The spring-loaded cover 47 is closed. Using screws and spring washers, the clamping buckle assembly 3 is installed on the large end cover 11.

[0065] When the spring-loaded locking assembly 4 locks the spring 44, as... Figure 18-20As shown: When a pushing force is applied to the locking push rod 45, the large spring 42 is compressed, the push rod assembly moves forward, and when the spring 44 reaches the mounting hole 412 on the left side of the springback base 41, due to its own elastic force, the spring clip 442 will move to the left and clip into the mounting hole 412 to achieve the locking function; after locking, push the springback push rod 46, the spring 44 will retract from the limiting inclined groove 461 of the springback push rod 46 and move to the right, the spring clip 442 will disengage from the mounting hole 412, the large spring 42 will extend and apply a pushing force to the push rod assembly to achieve the springback reset of the locking push rod 45, and the springback push rod 46 will also be subjected to the extension pushing force of the small spring 43 to achieve the springback reset.

[0066] After installing the limiting rotating component 2 and assembling the four components, the bearing and rotor assembly can be pressed into the small end cover 12. The assembly installation method is the same as described above. Note that the large shock-absorbing ring 14 of the end cover assembly 1 and the edge of the end cover should be pressed into the protrusion of the injection-molded stator 15. Then, the buckle 35 should be aligned with the inverted T-shaped structure (buckle mounting groove 151) on the injection-molded stator 15. When the end cover needs to be clamped, rotate the limiting rotating component 2 so that the limiting protrusion 211 contacts the rear end of the buckle push rod 32 of the clamping buckle assembly 3. After being subjected to force, the buckle push rod 32 extends outward and pushes the buckle 35 to close. At this time, the limiting slot 221 of the limiting rotating component 2 is also aligned with the clamping push rod 45 of the spring clamping assembly 4. Press the clamping push rod 45, and the spring 44 is inserted into the mounting hole 412. The clamping push rod 45 is also inserted into the limiting slot 221 of the limiting rotating component 2, realizing the clamping and locking function of the end cover.

[0067] When the latch 35 is to be released, press the spring push rod 46 of the spring-loaded clamping assembly 4 to disengage the spring 44 from the mounting hole 412 and the clamping push rod 45 from the limiting slot 221, thus resetting the clamping push rod 45 assembly. Then rotate the limiting rotating part 2 so that the limiting recessed surface 212 contacts the rear end of the latch push rod 32, and the slot spring rebounds, pushing the latch push rod 32 inward, causing the latch 35 to be released, thus realizing the function of releasing the end cover.

[0068] The main functions of this invention are: to provide an end cap and a vibration damping structure thereon, and a low-noise motor using the end cap; the motor has a limiting rotating part 2, a spring-loaded clamping assembly 4, and a closing buckle assembly 3, which can adjust the closing and opening posture; the separate structure of the large and small end caps can prevent deformation of other parts during disassembly; the inserted shock-absorbing ring can not only buffer the deformation caused by its own vibration, but also prevent resonance and noise caused by the transmission of motor vibration to the load.

[0069] In summary, after reading this invention document, those skilled in the art can make various other corresponding modifications to the technical solutions and concepts based on this invention without creative mental effort, and all of these modifications fall within the scope of protection of this invention.

Claims

1. A shock-absorbing end cap, characterized in that, The device includes an end cap assembly, a limiting rotating component, several closing latch assemblies, and several spring-loaded locking assemblies. The end cap assembly comprises a large end cap and a small end cap arranged sequentially from top to bottom, with a small damping ring between the large and small end caps. A large damping ring is located at the bottom edge of the large end cap. The closing latch assemblies and the spring-loaded locking assemblies are arranged alternately along the circumference of the large end cap. The limiting rotating component is positioned above the large end cap. One end of each closing latch assembly abuts against the concave-convex structure of the limiting rotating component, and the other end of the closing latch assembly is movably connected to the large end cap. The spring-loaded locking assemblies engage with the limiting rotating component. The limiting rotating component is connected to the large end cap mounting post of the large end cap via a limiting rotating component mounting ring at the bottom; the concave-convex structure includes a limiting protruding surface and a limiting recessed surface, which are arranged alternately around the outer side of the limiting rotating component mounting ring, and alternately abut against one end of the clamping buckle assembly when the limiting rotating component is rotated; a limiting slot is provided below the limiting recessed surface, which engages with the spring-loaded clamping assembly when the limiting protruding surface abuts against one end of the clamping buckle assembly; the clamping buckle assembly includes a buckle base, a buckle push rod, a buckle spring, and a rotating hinge. The chain and buckle; the buckle base is provided with a buckle push rod placement groove, the buckle push rod is disposed in the buckle push rod placement groove, the buckle push rod is provided with a buckle spring, one end of the buckle push rod extends out of the buckle push rod placement groove and is rotatably connected to one end of the rotating hinge, the other end of the buckle push rod extends out of the buckle push rod placement groove and abuts against the concave-convex structure, the other end of the rotating hinge is rotatably connected to one end of the buckle, the spring-loaded locking assembly includes a spring-loaded base, the spring-loaded base is provided with a large spring, a small spring, a spring sheet, a locking push rod and a spring-loaded push rod; the large spring and the spring sheet are sequentially disposed on the locking push rod. The large spring is located near one end of the spring-loaded base. One end of the locking push rod extends out of one side of the spring-loaded base and engages with the limiting slot. The other end of the locking push rod extends out of the other side of the spring-loaded base. The small spring is located inside the spring sheet. One end of the spring-loaded push rod is connected to the small spring. The other end of the spring-loaded push rod passes through the spring sheet and extends out of the other side of the spring-loaded base. The locking push rod has a spring sheet contact surface. The large spring is located between one side of the spring-loaded base and the spring sheet contact surface. The spring-loaded push rod has a limiting inclined groove that abuts against the spring sheet.

2. The shock-absorbing end cap according to claim 1, characterized in that, A connecting hole is provided on the edge of the large end cap corresponding to the position of the buckle, and the connection point of the rotating hinge with the buckle is rotatably disposed in the connecting hole via a connecting shaft.

3. The shock-absorbing end cap according to claim 1, characterized in that, A push rod limiting surface is provided in the middle of the buckle push rod placement slot, and a spring limiting surface is provided near the edge of the buckle push rod protruding from the buckle push rod placement slot; the buckle spring is disposed between the push rod limiting surface and the spring limiting surface.

4. A shock-absorbing end cap according to claim 1, characterized in that, A snap-fit ​​cover is provided above the snap-fit ​​base, and a movement groove is provided on the snap-fit ​​cover. A push block protruding from the movement groove is provided at the other end of the snap-fit ​​push rod.

5. A shock-absorbing end cap according to claim 1, characterized in that, The inner wall of the spring-loaded base is provided with a locking groove on the side near the spring-loaded push rod, and the spring is provided with a locking part on the side corresponding to the locking groove; the inner wall of the spring-loaded base is provided with a mounting hole on the side near the locking push rod, and the spring is provided with a spring clip on the side corresponding to the mounting hole.

6. A method for installing a shock-absorbing end cap, characterized in that, The application of the shock-absorbing end cap as described in any one of claims 1-5 further includes the following steps: (1) Determine the natural frequency range of motor noise and vibration based on actual tests; (2) Adjust the hardness range of the large and small damping rings in the end cover assembly according to the natural frequency range to eliminate or adjust the natural frequency of the motor; (3) Assemble the end cap assembly so that the shock absorber ring is inserted into the end cap; (4) Assemble the locking buckle assembly and install it on the large end cap; (5) Assemble the spring-loaded clamping assembly and install it on the large end cap; (6) Install the limiting rotating component on the large end cover; (7) When the end cover is closed, rotate the limiting protrusion of the limiting rotating part to contact the buckle push rod of the closing buckle assembly, and then push the buckle push rod of the spring-loaded buckle assembly into the limiting slot of the limiting rotating part to achieve the clamping posture; when the end cover is loosened, press down the spring-loaded push rod of the spring-loaded buckle assembly, retract the buckle push rod, and then rotate the limiting rotating part to make the limiting recessed surface contact the buckle push rod of the closing buckle assembly to achieve the buckle release.

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