Damping sleeve and fan motor

Abstract

The damping sleeve is characterized in that the damping sleeve comprises a sleeve; the damping protrusions are distributed on the surface and / or the two ends of the sleeve. The first interference areas are distributed on the surface of the sleeve and / or the two ends of the sleeve, the thickness difference exists between the first interference areas and the environment where the first interference areas are located, and the first interference areas are located on the circumferential surrounding path of the sleeve and / or the damping protrusions; the damping protrusions are used for blocking the extending trend of the sleeve and / or the damping protrusions in the circumferential direction. When mechanical waves are transmitted in the circumferential direction of the damping sleeve, the medium thickness of a mechanical wave transmission path changes, the mechanical waves can generate the phenomena of refraction, interference, diffraction, divergence, dispersion and the like at the junction of the thick medium and the thin medium, attenuation of the mechanical waves can be accelerated due to the phenomena, and the damping effect of the damping sleeve is enhanced. And the noise reduction effect of the damping sleeve is more remarkable.

Description

Technical Field

[0001] This application relates to the field of fans, and in particular, to a shock-absorbing sleeve and a fan motor. Background Art

[0002] A motor is a device that converts electrical energy into mechanical energy and is widely used in fields such as industry, household appliances, automobiles, and medical equipment. With the development of motor technology, the rotational speed of motors is getting faster and faster. The high-frequency rotational speed has also led to problems such as frequent vibrations and excessive noise.

[0003] In the prior art, in order to eliminate the vibration and noise problems caused by the rotation of the motor, a buffer structure is usually provided on the surface of the motor. The buffer structure is generally made of an elastically deformable material. For example, a rubber product is manufactured into a buffer sleeve and sleeved on the surface of the motor housing to play a role in shock absorption and noise reduction.

[0004] The inventors of the present invention found in their research that the buffer sleeve in the prior art is configured as a uniformly distributed ring. When the mechanical waves generated by the vibration of the motor propagate on the ring-shaped buffer sleeve, the attenuation speed is relatively slow. The mechanical waves with a relatively slow attenuation speed on the ring path have a greater chance of overlapping with other mechanical waves, resulting in greater vibrations and noise. Utility Model Content

[0005] The purpose of this application is to provide a shock-absorbing sleeve and a fan motor that can increase the attenuation of mechanical waves and improve the shock absorption and noise reduction effects.

[0006] An embodiment of this application provides a shock-absorbing sleeve, including:

[0007] A sleeve;

[0008] Shock-absorbing protrusions, the shock-absorbing protrusions are distributed on the surface and / or both end portions of the sleeve;

[0009] A first interference area, the first interference area is distributed on the surface and / or both end portions of the sleeve. There is a thickness difference between the first interference area and its surrounding environment, and the first interference area is located on the circumferential surrounding path of the sleeve and / or the shock-absorbing protrusions, and is used to block the propagation trend of the sleeve and / or the shock-absorbing protrusions in the circumferential direction.

[0010] Optionally, the shock-absorbing protrusion includes: at least one first protrusion, and the first protrusion is continuously arranged circumferentially along the outer wall of the sleeve and forms a closed-loop structure.

[0011] Optionally, the shock-absorbing protrusion includes: at least one second protrusion, and the second protrusion is arranged circumferentially at intervals along the outer wall of the sleeve.

[0012] Optionally, the second protrusion includes: a plurality of protrusion segments, which are circumferentially spaced along the outer wall of the sleeve.

[0013] Optionally, the first interference region includes: at least one first groove body, which extends from the first end of the sleeve to the second end of the sleeve; and / or,

[0014] the first interference region includes: at least one second groove body, which extends from the first end of the sleeve to the second end of the sleeve.

[0015] Optionally, the width of the first groove body is smaller than the width of the second groove body; and / or,

[0016] the first groove body and the second groove body are oppositely arranged on both sides of the sleeve; and / or,

[0017] the ratio of the width of the first groove body to the width of the second groove body is 1.1 - 4.

[0018] Optionally, the second groove body forms a deformable notch at the first end of the sleeve, and the deformable notch makes the first end of the sleeve an assembly end.

[0019] Optionally, the shock-absorbing sleeve further includes: a second interference region, which has a thickness difference from its surrounding environment and is circumferentially distributed along the inner wall of the sleeve.

[0020] Optionally, the second interference region includes: a plurality of third groove bodies, which are circumferentially spaced along the inner wall of the sleeve.

[0021] To solve the above technical problems, this embodiment further provides a fan motor, and the shock-absorbing sleeve described above is sleeved on the housing of the fan motor.

[0022] The beneficial effects of the embodiments of the present application are as follows: The main body of the shock-absorbing sleeve is configured in a sleeve shape. The surface of the sleeve is provided with shock-absorbing protrusions. A first interference area is also provided on the outer surface of the shock-absorbing sleeve. There is a thickness difference between the first interference area and the surrounding environment where it is located. That is, a first interference area with a thickness greater than the thickness of the sleeve or the thickness of the sleeve plus the shock-absorbing protrusions, or a thickness less than the thickness of the sleeve or the thickness of the sleeve plus the shock-absorbing protrusions is formed on the surface of the sleeve. The thickness of the first interference area is different from the thickness of the surrounding environment, and the first interference area is located on the circumferential surrounding path of the sleeve and / or the shock-absorbing protrusions. When mechanical waves are transmitted circumferentially in the shock-absorbing sleeve, the thickness of the medium on the mechanical wave transmission path changes. At the boundary between thick and thin media, phenomena such as refraction, interference, diffraction, divergence, and dispersion of mechanical waves will occur. The occurrence of these phenomena will accelerate the attenuation of mechanical waves, enhance the shock-absorbing effect of the shock-absorbing sleeve, and further make the noise reduction effect of the shock-absorbing sleeve more significant. At the same time, the attenuation speed of mechanical waves increases, reducing the probability of superposition of mechanical waves with other mechanical waves, and further enhancing the shock-absorbing effect and noise reduction effect of the shock-absorbing sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and easy to understand from the following description of the embodiments in conjunction with the drawings, where:

[0024] Figure 1 is a schematic structural diagram of the first perspective of the shock-absorbing sleeve in a specific embodiment of the present application;

[0025] Figure 2 is a schematic structural diagram of the second perspective of the shock-absorbing sleeve in a specific embodiment of the present application;

[0026] Figure 3 is a schematic structural diagram of the third perspective of the shock-absorbing sleeve in a specific embodiment of the present application;

[0027] Figure 4 is a schematic structural diagram of the fourth perspective of the shock-absorbing sleeve in a specific embodiment of the present application;

[0028] Figure 5 is a sectional view of the A-A plane of the shock-absorbing sleeve in a specific embodiment of the present application.

[0029] BRIEF DESCRIPTION OF THE DRAWINGS: 1. Sleeve; 11. First end; 12. Second end; 2. Shock-absorbing protrusion; 21. First protrusion; 22. Second protrusion; 221. Protrusion section; 3. First interference area; 31. First groove; 32. Second groove; 321. Deformable notch; 4. Second interference area; 41. Third groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] For the convenience of understanding the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this specification are only for the purpose of illustration.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in this specification in the description of the present invention are only for the purpose of describing specific embodiments and are not used to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0032] Please refer to Figure 1 and Figure 2 , Figure 1 is a schematic structural diagram of the shock-absorbing sleeve of this embodiment from the first perspective; Figure 2 is a schematic structural diagram of the shock-absorbing sleeve of this embodiment from the second perspective.

[0033] As Figure 1 and Figure 2 shown, a shock-absorbing sleeve includes: a sleeve 1, shock-absorbing protrusions 2 and a first interference zone 3. Among them, the shock-absorbing protrusions 2 are distributed on the surface and / or both end portions of the sleeve 1; the first interference zone 3 is distributed on the surface and / or both end portions of the sleeve 1, and there is a thickness difference between the first interference zone 3 and its surrounding environment, and the first interference zone 3 is located on the circumferential surrounding path of the sleeve 1 and / or the shock-absorbing protrusions 2, and is used to block the propagation trend of the sleeve 1 and / or the shock-absorbing protrusions 2 in the circumferential direction.

[0034] In this embodiment, the sleeve 1 is configured as a cylinder. However, the shape of the sleeve 1 is not limited thereto. According to different specific application scenarios, the shape of the sleeve 1 can be adaptively set according to the shape of the motor to be sleeved. For example, when the shape of the motor housing is a prism, the outer shape of the sleeve 1 is correspondingly set as a prism. Therefore, the shape of the sleeve 1 is not limited to specific embodiments.

[0035] In this embodiment, the shock-absorbing protrusions 2 are strip-shaped protrusions and / or dot-shaped protrusions.

[0036] When the shock-absorbing protrusion 2 is a strip-shaped protrusion, the strip-shaped protrusion can extend straight, obliquely or bent from the first end 11 to the second end 12 of the shock-absorbing sleeve. In some embodiments, the strip-shaped protrusion can also be arranged around the outer peripheral surface of the sleeve 1, and the arrangement of the strip-shaped protrusion can be (but not limited to): annular arrangement, spiral arrangement, bent arrangement, etc. The shock-absorbing protrusion 2 can be a complete and continuous strip-shaped protrusion, or can be composed of two or more strip-shaped protrusions arranged at intervals. The cross-section of the strip-shaped protrusion can be (but not limited to): semi-circular, elliptical, rhombic, etc. According to the requirements of specific application scenarios, the setting direction, extension form and cross-sectional shape of the strip-shaped protrusion can all be configured based on meeting the requirements of the scenario, not limited to the solutions listed in specific embodiments.

[0037] When the shock-absorbing protrusion 2 is a dot-shaped protrusion, the cross-sectional shape of the dot-shaped protrusion can be (but not limited to): hemispherical, conical, frustum-shaped, triangular, quadrilateral or other polygons. The dot-shaped protrusions can be distributed randomly and irregularly on the surface of the sleeve 1, or can be arranged regularly in a certain arrangement order on the surface of the sleeve 1. According to the requirements of specific application scenarios, the setting shape and arrangement of the dot-shaped protrusions can all be configured based on meeting the requirements of the scenario, not limited to the solutions listed in specific embodiments.

[0038] In some embodiments, the shock-absorbing protrusion 2 includes: strip-shaped protrusions and dot-shaped protrusions. The strip-shaped protrusions and dot-shaped protrusions can be arranged alternately, or can be arranged in two separate regions.

[0039] The first interference area 3 in this embodiment is a groove or rib provided on the surface of the sleeve 1. When the first interference area 3 is a groove, the thickness of the first interference area 3 is less than the thickness of the sleeve 1 at the corresponding position. When the first interference area 3 is a rib, the thickness of the first interference area 3 is greater than the thickness of the sleeve 1 at the corresponding position or the thickness of the sleeve 1 plus the shock-absorbing protrusion 2.

[0040] In some embodiments, the first interference area 3 includes: a groove and a rib, and the groove and the rib are arranged at different positions on the surface of the sleeve 1.

[0041] The first interference area 3 is provided on the outer surface of the sleeve 1 to block the extension trend of the sleeve 1 and / or the shock-absorbing protrusion 2 in the circumferential direction. The first interference area 3 can extend from the first end 11 of the sleeve 1 to the second end 12 opposite to the first end 11, or can be provided at a local position between the first end 11 and the second end 12. The first interference area 3 can block the extension trend of the entire sleeve 1 and all shock-absorbing protrusions 2 laterally, or can only block the extension trend of a partial area of the sleeve 1 or a shock-absorbing protrusion 2.

[0042] The barrier in this embodiment means that the groove formed by the convex ridge or the concave hinders the extending tendency of the sleeve 1 or the shock-absorbing protrusion 2 in the circumferential direction of the sleeve 1, interrupting or partially interrupting the original extending tendency of the sleeve 1 or the shock-absorbing protrusion 2. Since the sleeve 1 itself needs to maintain the closure of its surface, the first interference area 3 cannot completely disconnect the sleeve 1. Therefore, the barrier does not mean isolation, but rather hindrance and partial interruption.

[0043] The propagation in this embodiment means extension and transmission. In the circumferential direction of the sleeve 1, it is set that the sleeve 1 has a tendency to circumferentially surround and close with a constant thickness, and the shock-absorbing protrusion 2 also has a tendency to circumferentially surround and close with a constant thickness or surround at intervals. For the transmission of mechanical waves, the sleeve 1 and the shock-absorbing protrusion 2 also have a tendency to transmit the mechanical wave with a constant thickness. The first interference area 3 is arranged on the circumferential surrounding path of the sleeve 1 and / or the shock-absorbing protrusion 2, and has the function of hindering the extending tendency of the sleeve 1 and / or the shock-absorbing protrusion 2 with the same thickness, and hindering the transmission of mechanical waves in a medium with the same thickness.

[0044] In the above embodiment, the main body of the shock-absorbing sleeve is configured as a sleeve 1, the surface of the sleeve 1 is provided with shock-absorbing protrusions 2, and a first interference area 3 is also provided on the outer surface of the shock-absorbing sleeve. There is a thickness difference between the first interference area 3 and the surrounding environment at its position. That is, a first interference area 3 with a thickness greater than the thickness of the sleeve 1 or the thickness of the sleeve 1 plus the shock-absorbing protrusions 2, or a thickness less than the thickness of the sleeve 1 or the thickness of the sleeve 1 plus the shock-absorbing protrusions 2 is formed on the surface of the sleeve 1. The thickness of the first interference area 3 is different from the thickness of the surrounding environment, and the first interference area 3 is located on the circumferential surrounding path of the sleeve 1 and / or the shock-absorbing protrusions 2. When mechanical waves are transmitted circumferentially in the shock-absorbing sleeve, the thickness of the medium in the mechanical wave transmission path changes, and phenomena such as refraction, interference, diffraction, divergence, and dispersion will occur at the boundary between the thick and thin media. The occurrence of these phenomena will accelerate the attenuation of mechanical waves, enhance the shock-absorbing effect of the shock-absorbing sleeve, and further make the noise reduction effect of the shock-absorbing sleeve more significant. At the same time, the attenuation speed of mechanical waves increases, reducing the probability of superposition of mechanical waves with other mechanical waves, and further enhancing the shock-absorbing effect and noise reduction effect of the shock-absorbing sleeve.

[0045] Please refer to Figure 3 and Figure 4 , Figure 3 which is a schematic structural diagram of the shock-absorbing sleeve from the third perspective of this embodiment; Figure 4 which is a schematic structural diagram of the shock-absorbing sleeve from the fourth perspective of this embodiment.

[0046] As Figure 3 and Figure 4 shown, in some embodiments, the shock-absorbing protrusion 2 includes at least one first protrusion 21, and the first protrusion 21 is continuously arranged circumferentially along the outer wall of the sleeve 1 and forms a closed-loop structure.

[0047] The number of the first protrusions 21 can be: 1, 2, 3 or more. The set number of the first protrusions 21 can be set according to the requirements of specific application scenarios, and is not limited to the number defined by specific embodiments.

[0048] The first protrusions 21 are continuously arranged circumferentially along the outer wall of the sleeve 1 and form a closed-loop structure. When the first protrusions 21 extend circumferentially along the outer wall of the sleeve 1, the extending manner of the first protrusions 21 can be smooth extension or curved extension. The extending manner of the first protrusions 21 is flexibly selected according to the needs of specific application scenarios, and is not limited to specific embodiments.

[0049] In some embodiments, the shock-absorbing sleeve is provided with two first protrusions 21, and the two first protrusions 21 are respectively arranged near the first end 11 and the second end 12 of the sleeve 1.

[0050] The setting of the first protrusions 21 can reduce the resistance between the shock-absorbing sleeve and an external housing (not shown in the figure), and facilitate the assembly between the shock-absorbing sleeve and the external housing. The protruding structure of the first protrusions 21 has a larger deformation space when subjected to external forces, and has better buffering and noise reduction effects. At the same time, since the first protrusions 21 are continuously arranged, the force can be conducted to other positions after local stress, playing a role in unloading and sharing the force.

[0051] In some embodiments, the shock-absorbing protrusions 2 include: at least one second protrusion 22, and the second protrusions 22 are arranged at intervals circumferentially along the outer wall of the sleeve 1.

[0052] The number of the second protrusions 22 can be: 1, 2, 3 or more. The set number of the second protrusions 22 can be set according to the requirements of specific application scenarios, and is not limited to the number defined by specific embodiments.

[0053] The second protrusions 22 are strip-shaped protrusions. However, the shape of the second protrusions 22 is not limited thereto. According to different specific application scenarios, in some embodiments, the shape of the second protrusions 22 can be dot-shaped protrusions. Therefore, the shape of the second protrusions 22 can be selected according to the needs of specific application scenarios, and is not limited to specific embodiments.

[0054] The second protrusions 22 are arranged at equal intervals. However, the arrangement manner of the second protrusions 22 is not limited thereto. According to different specific application scenarios, in some embodiments, the second protrusions 22 are arranged at irregular intervals. Therefore, the interval arrangement manner of the second protrusions 22 can be selected according to the needs of specific application scenarios, and is not limited to specific embodiments.

[0055] In some embodiments, the shock-absorbing sleeve is provided with two first protrusions 21 and one second protrusion 22, and the second protrusion 22 is arranged between the two first protrusions 21. However, the number and relative positional relationship of the first protrusions 21 and the second protrusion 22 are not limited thereto, and can be set according to the requirements of specific application scenarios, and are not limited to specific embodiments.

[0056] In some embodiments, the second protrusion 22 includes: a plurality of protrusion segments 221, and the plurality of protrusion segments 221 are arranged at intervals along the outer wall circumference of the sleeve 1.

[0057] The number of the protrusion segments 221 included in the second protrusion 22 is: 2, 3, 4 or more. The number of the protrusion segments 221 can be set according to the requirements of specific application scenarios, and is not limited to specific embodiments.

[0058] The setting of the second protrusion 22 can reduce the resistance between the shock-absorbing sleeve and an external housing (not shown in the figure), and facilitate the assembly between the shock-absorbing sleeve and the external housing. The protruding structure of the second protrusion 22 has a larger deformation space when subjected to an external force, and has better buffering and noise reduction effects. At the same time, since the second protrusions 22 are arranged at intervals, the second protrusions 22 present a shape with undulating thickness in the overall structure, and the change in thickness will also cause the accelerated attenuation of mechanical waves, further enhancing the shock-absorbing and noise-reducing effects of the shock-absorbing sleeve.

[0059] In some embodiments, the first interference area 3 includes: at least one first groove 31, and the first groove 31 extends from the first end 11 of the sleeve 1 to the second end 12 of the sleeve 1.

[0060] The number of the first grooves 31 can be: 1, 2, 3 or more. The set number of the first grooves 31 can be set according to the requirements of specific application scenarios, and is not limited to the number in specific embodiments.

[0061] The first groove 31 extends from the first end 11 to the second end 12 and penetrates the surface area of the sleeve 1. However, the relative positional relationship of the first groove 31 with respect to the sleeve 1 is not limited thereto. According to different specific application scenarios, in some embodiments, the first groove 31 is only arranged between the first end 11 and the first protrusion 21, or at a partial position of the first end 11 and extending beyond the first protrusion 21. Therefore, the length and position of the first groove 31 on the sleeve 1 can be set according to the requirements of specific application scenarios, and are not limited to the exemplified solutions in specific embodiments.

[0062] In some embodiments, the first interference area 3 includes: at least one second groove 32, and the second groove 32 extends from the first end 11 of the sleeve 1 to the second end 12 of the sleeve 1.

[0063] The number of the second groove bodies 32 can be: 1, 2, 3 or more. The set number of the second groove bodies 32 can be set according to the requirements of specific application scenarios, and is not limited to the number defined by specific embodiments.

[0064] The second groove body 32 extends from the first end 11 to the second end 12 and penetrates the surface area of the sleeve 1. However, the set position relationship of the second groove body 32 relative to the sleeve 1 is not limited to this. According to different specific application scenarios, in some embodiments, the second groove body 32 is only arranged between the first end 11 and the first protrusion 21, or at a partial position of the first end 11 and extending out of the first protrusion 21. Therefore, the length and position of the second groove body 32 on the sleeve 1 can be set according to the requirements of specific application scenarios, and are not limited to the solutions exemplified by specific embodiments.

[0065] In some embodiments, a first groove body 31 and a second groove body 32 are arranged on the shock-absorbing sleeve. However, the first interference area 3 on the shock-absorbing sleeve is not limited to this. In some embodiments, only the first groove body 31 or the second groove body 32 is arranged on the shock-absorbing sleeve.

[0066] The arrangement of the first groove body 31 and the second groove body 32 causes phenomena such as refraction, interference, diffraction, divergence, and dispersion when mechanical waves are transmitted between the sleeve 1 and the first interference area 3. The occurrence of these phenomena will accelerate the attenuation of mechanical waves and enhance the shock-absorbing effect of the shock-absorbing sleeve, thereby making the noise reduction effect of the shock-absorbing sleeve more significant.

[0067] In some embodiments, the width of the first groove body 31 is smaller than the width of the second groove body 32. The width of the first groove body 31 being smaller than the width of the second groove body 32 forms groove bodies with different widths on the surface of the sleeve 1. Groove bodies with different widths have different interference effects on the transmission of mechanical waves. The mechanical waves attenuated by different groove bodies interfere with each other after meeting during the transmission process, further accelerating the attenuation efficiency.

[0068] In some embodiments, the ratio of the width of the first groove body 31 to the width of the second groove body 32 is 1.1 - 4. Within this numerical range, the shock-absorbing effect of the shock-absorbing sleeve is relatively good. In some embodiments, the ratio of the width of the first groove body 31 to the width of the second groove body 32 is a non-integer value. The non-integer value of the width ratio can avoid the superposition of waveforms from the same vibration source at other positions of the sleeve 1 through the first groove body 31 and the second groove body 32, causing vibrations with a larger amplitude, and making the shock-absorbing effect of the shock-absorbing sleeve better.

[0069] In some embodiments, the first groove body 31 and the second groove body 32 are oppositely arranged on both sides of the sleeve 1. The first groove body 31 and the second groove body 32 are oppositely arranged so that the first groove body 31 and the second groove body 32 have the maximum distance in the radial direction. The mechanical waves attenuated by the first groove body 31 and the second groove body 32 have a long enough interference distance to increase the attenuation rate.

[0070] Please refer to Figure 5 , Figure 5 which is the cross-sectional view of the shock-absorbing sleeve A-A of this embodiment.

[0071] As Figure 5 shown, in some embodiments, the second groove body 32 forms a deformable notch 321 at the first end 11 of the sleeve 1, and the deformable notch 321 makes the first end 11 of the sleeve 1 an assembly end.

[0072] The second groove body 32 forms a deformable notch 321 at the first end 11, and the deformable notch 321 makes the first end 11 of the sleeve 1 easier to expand and open, facilitating the insertion of the motor into the shock-absorbing sleeve and improving the assembly efficiency between the shock-absorbing sleeve and the motor. At the same time, the position of the deformable notch 321 completely truncates the sleeve 1 and the first interference zone 3 in the circumferential direction, making the attenuation speed of the mechanical waves located there faster.

[0073] In some embodiments, the shock-absorbing sleeve further includes: a second interference zone 4, which has a thickness difference from its surrounding environment and is distributed circumferentially along the inner wall of the sleeve 1.

[0074] The second interference zone 4 in this embodiment is a groove or a rib provided on the surface of the sleeve 1. When the second interference zone 4 is a groove, the thickness of the second interference zone 4 is less than the thickness of the sleeve 1 at the corresponding position. When the second interference zone 4 is a rib, the thickness of the second interference zone 4 is greater than the thickness of the sleeve 1 at the corresponding position.

[0075] The second interference zone 4 is provided on the inner surface of the sleeve 1. Whether the second interference zone 4 is a groove or a rib, after it is assembled with the motor, an airbag structure (not shown in the figure) will be formed between the motor housing and the shock-absorbing sleeve. The airbag structure has a good buffering effect and improves the buffering effect of the shock-absorbing sleeve. At the same time, due to the thickness difference between the second interference zone 4 and the surrounding environment, mechanical waves will undergo refraction, interference, diffraction, divergence, dispersion and other phenomena at the interface between the thick and thin media. The occurrence of these phenomena will accelerate the attenuation of mechanical waves. Combining with the attenuation of mechanical waves by the first interference zone 3, the shock-absorbing effect of the shock-absorbing sleeve is further enhanced, and thus the noise reduction effect of the shock-absorbing sleeve is more significant. The setting of the second interference zone 4 can also reduce the resistance during the assembly of the motor, making the assembly between the motor and the shock-absorbing sleeve more efficient.

[0076] In some embodiments, the second interference region 4 includes: a plurality of third grooves 41, which are circumferentially spaced along the inner wall of the sleeve 1.

[0077] The number of the third grooves 41 can be: 2, 3, 4 or more. The set number of the third grooves 41 can be set according to the requirements of specific application scenarios, and is not limited to the number defined by specific embodiments.

[0078] After the shock-absorbing sleeve is assembled with the motor, a plurality of third grooves 41 will form a plurality of mutually spaced and independent airbag structures between the shock-absorbing sleeve and the motor. The airbag structure has a good buffering effect and improves the buffering effect of the shock-absorbing sleeve.

[0079] It should be noted that any embodiment in this embodiment can be implemented independently, or implemented in combination with one or more other embodiments. When implemented in combination, the combination method should not be limited to the combination methods listed in this embodiment.

[0080] Embodiment 2

[0081] A fan motor, on the housing of which a shock-absorbing sleeve as in Embodiment 1 is sleeved.

[0082] It should be pointed out that the fan motor in this embodiment can be applied to products that require boosting air circulation, including (but not limited to): bladeless fans, automotive fans, desktop fans, floor fans, spherical fans, neck fans, handheld fans, industrial fans, air conditioners, hair dryers, etc. The shock-absorbing sleeve in Embodiment 1 is assembled inside the outer shell of the above products.

[0083] A shock-absorbing sleeve is sleeved on the fan motor in this embodiment. The main body of the shock-absorbing sleeve is configured as the sleeve 1, and shock-absorbing protrusions 2 are provided on the surface of the sleeve 1. A first interference region 3 is also provided on the outer surface of the shock-absorbing sleeve, and there is a thickness difference between the first interference region 3 and the surrounding environment at its position. That is, a first interference region 3 with a thickness greater than the thickness of the sleeve 1 or the thickness of the sleeve 1 plus the shock-absorbing protrusions 2, or a thickness less than the thickness of the sleeve 1 or the thickness of the sleeve 1 plus the shock-absorbing protrusions 2 is formed on the surface of the sleeve 1. The thickness of the first interference region 3 is different from the thickness of the surrounding environment, and the first interference region 3 is located on the circumferential surrounding path of the sleeve 1 and / or the shock-absorbing protrusions 2. When mechanical waves are transmitted circumferentially in the shock-absorbing sleeve, the thickness of the medium of the mechanical wave transmission path changes, and phenomena such as refraction, interference, diffraction, divergence, and dispersion will occur at the boundary between the thick and thin media. The occurrence of these phenomena will accelerate the attenuation of mechanical waves, enhance the shock-absorbing effect of the shock-absorbing sleeve, and thus make the noise reduction effect of the shock-absorbing sleeve more significant. At the same time, the attenuation speed of mechanical waves increases, reducing the probability of superposition of mechanical waves with other mechanical waves, and further enhancing the shock-absorbing effect and noise reduction effect of the shock-absorbing sleeve.

[0084] It should be noted that the description and drawings of the present application provide preferred embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described in this specification. These embodiments do not serve as additional limitations to the content of the present application. The purpose of providing these embodiments is to make the understanding of the disclosed content of the present application more thorough and comprehensive. Moreover, the above technical features continue to be combined with each other to form various embodiments not listed above, which are all regarded as within the scope described in the description of the present invention. Further, for those of ordinary skill in the art, improvements or transformations can be made according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present application.

Claims

1. A shock-absorbing sleeve, characterized in that: include: Sleeve; Shock-absorbing protrusions, which are distributed on the surface and / or at both ends of the sleeve; The first interference zone is distributed on the surface and / or both end portions of the sleeve, there is a thickness difference between the first interference zone and its environment, and the first interference zone is located on the circumferential path of the sleeve and / or the shock-absorbing protrusion, and is used to block the delay trend of the sleeve and / or the shock-absorbing protrusion in the circumferential direction.

2. The shock-absorbing sleeve according to claim 1, characterized in that: The shock-absorbing protrusion includes: at least one first protrusion, which is continuously arranged along the circumference of the outer wall of the sleeve to form a closed loop structure.

3. The shock absorbing sleeve according to claim 1, characterized in that: The shock-absorbing protrusion includes: at least one second protrusion, and the second protrusion is arranged at intervals along the outer wall of the sleeve in the circumferential direction.

4. The shock-absorbing sleeve according to claim 3, characterized in that: The second protrusion includes: a plurality of protrusion segments, and the plurality of protrusion segments are circumferentially spaced apart along the outer wall of the sleeve.

5. The shock absorbing sleeve according to any one of claims 1 to 4, characterized in that: The first interference zone includes: at least one first slot body, the first slot body extending from the first end of the sleeve to the second end of the sleeve; and / or, The first interference area includes: at least one second slot body, and the second slot body extends from the first end of the sleeve to the second end of the sleeve.

6. The shock-absorbing sleeve according to claim 5, characterized in that: The width of the first slot body is smaller than the width of the second slot body; and / or, The first slot body and the second slot body are arranged opposite to each other on both sides of the sleeve; and / or, The ratio of the width of the first slot body to the width of the second slot body is 1.1-4.

7. The shock-absorbing sleeve according to claim 5, characterized in that: The second groove body forms an easily deformable notch at the first end of the sleeve, and the easily deformable notch makes the first end of the sleeve become an assembly end.

8. The shock-absorbing sleeve according to claim 1, characterized in that: The shock-absorbing sleeve further includes: a second interference area, wherein there is a thickness difference between the second interference area and its surroundings, and the second interference area is distributed circumferentially along the inner wall of the sleeve.

9. The shock-absorbing sleeve according to claim 8, characterized in that: The second interference area includes: a plurality of third grooves, and the plurality of third grooves are arranged at intervals along the inner wall of the sleeve in the circumferential direction.

10. A fan motor, characterized in that: The casing of the fan motor is provided with a shock-absorbing sleeve as described in any one of claims 1 to 9.

Images