CN111966182A - Vibration reduction module, fan externally-hung vibration reduction module and fan - Google Patents

Abstract

The present invention provides a vibration damping module, comprising: a variable-length vibration-damping frame and a weight-changeable weight block located in the vibration-damping frame, the counterweight block has two oppositely arranged end faces, and the two end faces of the counterweight block They are in elastic contact with the inner walls on both sides of the vibration damping frame, respectively, and an elastic pressing force is formed on the end face of the counterweight and the inner wall of the vibration damping frame. The setting direction of the fixing elements is perpendicular to the axis of the counterweight block itself, each fixing element corresponds to a locking element, and the shock absorbing frame is detachably connected to the vibration equipment through the fixing element and the locking element in turn. The invention modularizes the vibration-damping frame, and the vibration-damping frame and the fan are combined into a complete fan system. When the fan rotates to generate vibration, the vibration is transmitted to the vibration-damping frame, which drives the inner counterweight mass to vibrate; the two vibration frequencies are inconsistent and oscillate. In the case of natural loss of energy, reducing energy transfer.

Description

A vibration damping module, a fan externally mounted vibration damping module and a fan

technical field

The invention belongs to the technical field of servers, and in particular relates to a vibration damping module, a fan externally mounted vibration damping module and a fan with the externally mounted vibration damping module.

Background technique

According to the technological development of the central server, in order to increase the flow of the system fans, multiple fans are often used to draw air side by side. When the fan is running, the energy gathers a certain frequency, and if the energy of this frequency just has a clear influence on the hard disk, it will cause obvious interference to the hard disk read and write head, resulting in a decrease in the hard disk read and write value; while the general server The shipping requirements all require that the hard disk should not be attenuated too much at any speed, so as not to cause problems such as unstable use or data loss.

The existing technology uses rubber pads to support the system fan, and it is expected to suspend the fan so as not to transmit energy, and the vibration isolation effect of the rubber pad has a clear relationship with its own appearance size, rubber hardness, assembly accuracy, and fan vibration characteristics. ; Since the energy isolation effect is clearly related to the rubber pad technology, the vibration isolation effect of the system fan is often poor, and the vibration wave cannot be isolated in the rubber pad at the energy excitation end.

SUMMARY OF THE INVENTION

In view of the problems existing in the prior art, the embodiments of the present invention provide a vibration damping module, a fan externally mounted vibration damping module, and a fan with an external mounted vibration damping module, so as to solve the system fan existing in the prior art The problem of poor vibration isolation.

A first aspect of the present invention provides an externally mounted vibration damping module for a fan, comprising: a vibration damping frame with a changeable length and a weight-changeable counterweight located in the damping frame, the counterweight having The oppositely arranged two end faces, the two end faces of the counterweight block are in elastic contact with the inner walls on both sides of the vibration damping frame, respectively, and the end faces of the counterweight block and the inner wall of the vibration damping frame are respectively in elastic contact with each other. forming an elastic squeezing force that varies with the elastic coefficient;

The outer wall of the vibration-damping frame is provided with at least a pair of fixing elements, the setting direction of the fixing elements is perpendicular to the axis of the counterweight, each of the fixing elements corresponds to a locking element, and the shock-absorbing frame The fixing element and the locking element are sequentially detachably connected with the vibration device.

Optionally, a spring is disposed between the counterweight and the vibration damping frame, and the spring is respectively connected to the counterweight and the vibration damping frame.

Optionally, an installation space for placing the counterweight and the spring is provided in the vibration damping frame.

Optionally, the two end faces of the counterweight are provided with a structural step for engaging with the spring; the inner walls on both sides of the vibration damping frame are provided with protrusions for engaging with the spring. Each of the structural steps is spaced from the corresponding bump, and the spring forms a compressive potential energy therebetween.

Optionally, the weight of the counterweight block is 5-10% of the weight of the heat dissipation device.

Optionally, the counterweight block adopts a cylindrical structure, and the weight of the counterweight block is set by controlling the diameter of the middle section.

Optionally, the fixing element is a pin structure, and the pin structure is integrally formed with the vibration damping frame.

In a second aspect of the present invention, there is provided an externally mounted vibration damping module for a fan, including the above vibration damping module, and further comprising: the locking element is a nylon rivet, and the vibration damping frame passes through the fixing element, The nylon rivet is riveted with a vibration device, and the vibration device is a cooling fan.

A third aspect of the present invention provides a fan with an externally mounted vibration damping module, including the above vibration damping module, and further comprising: the locking element is a nylon rivet, and the vibration damping frame passes through the The fixing element and the nylon rivet are riveted with a vibration device, and the vibration device is a cooling fan.

Optionally, the cooling fan is provided with a fan assembly guide hole, and the nylon rivet is combined with the corresponding fixing element and inserted into the fan assembly guide hole.

In the present invention, there is provided a vibration damping module, a fan externally mounted vibration damping module and a fan with the external mounted vibration damping module, comprising: a vibration damping frame with a changeable length and a changeable weight inside the vibration damping frame The counterweight block has two oppositely arranged end faces, and the two end faces of the counterweight block are respectively in elastic contact with the inner walls of both sides of the vibration damping frame, and are formed on the end face of the counterweight block and the inner wall of the vibration damping frame respectively. The elastic pressing force varies with the elastic coefficient; the outer wall of the vibration damping frame is provided with at least a pair of fixing elements, the setting direction of the fixing elements is perpendicular to the axis of the counterweight, and each fixing element corresponds to a locking element The vibration damping frame is detachably connected to the vibration equipment through the fixing element and the locking element in turn; wherein the vibration equipment is a cooling fan. During the operation of the fan, vibration energy will be generated. The main idea of the present invention is to transmit the vibration energy through the contact medium. The dissipation of the vibration energy is mainly through the connection between the vibration damping frame and the cooling fan, and the vibration source is dispersed on the vibration damping frame. The vibration energy is consumed by elastic damping, so that the vibration of the cooling fan can be dissipated in time, so as to reduce the transmission of vibration energy and improve the vibration performance of the hard disk. In a word, the vibration damping module is externally placed on the cooling fan, and can be quickly arranged on the fan. For vibration energy in a special frequency band, it can accurately dissipate energy; the vibration damping module of the present invention can achieve modularization, tool-free, The easy-to-replace feature can save the material and labor costs of attaching vibration-absorbing materials, reduce the impact of fan vibration on the performance of the hard disk, shorten the distance between the cooling fan and the hard disk backplane, and increase design flexibility; at the same time, it can be expanded to Fans of different models, especially those with heavier weight, can also use this solution to improve the read performance of the hard disk and increase the items that the hard disk can support.

Description of drawings

1 is a schematic diagram of a shaft side structure of a vibration damping module provided by an embodiment of the present invention;

FIG. 2 is a schematic diagram of a shaft side structure of a vibration damping module provided in an embodiment of the present invention installed on a cooling fan;

FIG. 3 is a schematic diagram of an axial side structure of a counterweight block provided by an embodiment of the present invention.

Reference number:

1-Vibration damping frame; 2-Counterweight; 3-Spring; 4-Plug structure; 5-Nylon rivet; 6-Cooling fan;

11-Bump; 21-Structural level difference.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

Example 1

The present embodiment discloses a vibration damping module, as shown in FIG. 1 , comprising: a vibration damping frame 1 with a changeable length and a weight-changeable weight block 2 located in the vibration damping frame 1 , and the counterweight block 2 has The oppositely arranged end faces, the two end faces of the counterweight block 2 are in elastic contact with the inner walls on both sides of the vibration damping frame 1 respectively, and an elastic pressing force is formed on the end face of the counterweight block 2 and the inner wall of the damping frame 1, respectively. The elastic pressing force varies with the elastic coefficient and the number of effective turns; at least a pair of fixing elements are arranged on the outer wall of the vibration damping frame 1, and the setting direction of the fixing elements is perpendicular to the axis of the counterweight 2, and each fixing element corresponds to a lock A tightening element is used, and the shock absorbing frame is detachably connected to the vibration device through the fixing element and the locking element in turn.

It should be pointed out that, under the action of the elastic pressing force, the vibration energy generated by the vibrating device can be dissipated by elastic damping after being transmitted to the contact medium of the vibration damping frame 1. The tightening element is detachably connected to the vibration equipment. It is worth noting that, according to the different vibration frequencies of the vibration equipment, the generated vibration energy is different, and the size of the configured vibration damping frame 1 and the size of the counterweight 2 will change accordingly. In order to quickly dissipate the vibration energy of different sizes of vibration equipment, when the vibration equipment is the cooling fan 6 of the server, the structures connected to the cooling fan 6 are all made of insulating materials.

As an optional embodiment, a spring 3 is provided between the counterweight 2 and the damping frame 1, and the spring 3 is respectively engaged with the counterweight 2 and the damping frame 1; in this process, the spring 3 is used for deployment Vibration characteristics, changing the wire diameter and the effective number of turns of the spring 3 can control the rigidity of the spring 3. Under the action of the elastic damping of the spring 3, the vibration energy of the fan is dissipated to ensure a stable operating environment of the hard disk; the spring 3 is provided with two , respectively located on the two end faces of the counterweight block 2, each spring 3 is engaged with the counterweight block 2 and the damping frame 1, so that after the vibration energy is transmitted to the damping frame 1, it can be stably transmitted to the spring 3 and the damping frame 1 in turn. Heavy block 2 to ensure the stability of the energy dissipation process.

As an optional embodiment, the damping frame 1 is provided with an installation space for placing the counterweight 2 and the spring 3. As shown in FIG. 1 , the counterweight 2 and the spring 3 are stably arranged in the damping frame 1. There is an appropriate space to compress the spring 3, thereby generating elastic damping between the spring 3 and the counterweight 2 to complete the energy dissipation process.

As an optional embodiment, the two end faces of the counterweight 2 are provided with a structural level difference 21 for engaging with the spring 3; Block 11; each structural step 21 is spaced from the corresponding bump 11, the spring 3 forms compression potential energy between the two, and then combined with the counterweight 2 to form elastic damping together, that is, the balance between the counterweight 2 and the spring 3 It is installed in the vibration damping frame 1 by means of compression springs 3 .

As an optional embodiment, the weight of the counterweight block 2 is 5-10% of the weight of the heat dissipation device, which can obtain the best vibration reduction effect.

As an optional embodiment, the counterweight block 2 adopts a cylindrical structure, and the weight of the counterweight block 2 is set by controlling the diameter of the middle section to adapt to the vibration energy generated by the cooling fans 6 of different sizes.

As an optional embodiment, the fixing element is a pin structure 4, and the pin structure 4 is integrally formed with the vibration damping frame 1. During the application process, the stability of the damping module can be further ensured; as shown in FIG. 1, the pin structure 4 It is integrated with the vibration damping frame 1, and both are made of insulating material.

The fan externally mounted vibration damping module provided by this embodiment of the present invention can bring the beneficial effects at least as follows: the vibration damping frame 1 is modularized, the vibration damping frame 1 and the fan are combined into a complete fan system, and nylon rivets 5 Insert the vibration damping module into the guide hole of the fan assembly. When the fan rotates to generate vibration, because the vibration is transmitted to the vibration damping frame 1, the inner counterweight 2 is driven to follow the vibration. In the case that the two vibration frequencies oscillate inconsistently, energy is naturally consumed, reducing energy transmission, and the spring 3 also provides deformation energy to absorb energy, effectively achieving energy consumption.

Based on the same inventive concept, the present invention also provides an externally mounted vibration damping module for a fan, see Embodiment 2 for details.

Embodiment 2

This embodiment provides an externally mounted vibration damping module for a fan. As shown in FIG. 3 , it includes the vibration damping module of Embodiment 1, and further includes: the locking element is nylon rivet 5, and the vibration damping frame 1 passes through the fixing element, The nylon rivet 5 is riveted with the vibration device, and the vibration device is a cooling fan 6 .

Specifically, the fixing element is the latch structure 4. In the present invention, the latch structure 4 and the nylon rivet 5 together form a locking combination, wherein the nylon rivet 5 is arranged in the cooling fan 6, and its function is to act as the nylon rivet 5 and the latch structure 4. After assembly, the mounting holes on the cooling fan 6 can be tightly grasped by pressing from the inside to the outside, so that it is not easy to fall off.

The fan externally mounted vibration damping module provided by this embodiment of the present invention can bring beneficial effects at least as follows: the vibration damping module is externally placed on the cooling fan 6 and can be quickly arranged on the fan. Vibration energy can be accurately dissipated; the vibration damping module of the present invention can achieve the characteristics of modularization, tool-free, easy disassembly and replacement, can save the material and labor cost of attaching vibration damping materials, and reduce the impact of fan vibration on the performance of the hard disk. It can shorten the distance between the cooling fan 6 and the backplane of the hard disk, and improve the design flexibility; at the same time, it can be expanded to fans of different models, especially the fans with heavier weight. This solution can also be used to improve the readability of the hard disk. To improve performance, increase the items that the hard disk can support.

Based on the same inventive concept, the present invention also provides a fan with an externally mounted vibration damping module, see the third embodiment for details.

Embodiment 3

This embodiment provides a fan with an externally mounted vibration damping module. As shown in FIG. 3 , it includes all the technical features of the above-mentioned first embodiment, and further includes: the locking element is a nylon rivet 5 , and the vibration damping frame 1 passes through in sequence. The fixing element and the nylon rivet 5 are riveted with the vibration device, and the vibration device is a cooling fan 6 .

As an optional embodiment, the cooling fan 6 is provided with a fan assembly guide hole, and the nylon rivet 5 is combined with the corresponding fixing element and inserted into the fan assembly guide hole.

The fan externally mounted vibration damping module provided by this embodiment of the present invention can bring the beneficial effects at least as follows: the vibration damping frame 1 is modularized, the vibration damping frame 1 and the fan are combined into a complete fan system, and nylon rivets 5 Insert the vibration damping module into the guide hole of the fan assembly. When the fan rotates to generate vibration, because the vibration is transmitted to the vibration damping frame 1, the inner counterweight 2 is driven to follow the vibration. In the case that the two vibration frequencies oscillate inconsistently, energy is naturally consumed, reducing energy transmission, and the spring 3 also provides deformation energy to absorb energy, effectively achieving energy consumption.

While the preferred embodiments of the present application have been described, additional changes and modifications to these embodiments may occur to those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiment and all changes and modifications that fall within the scope of this application.

The above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of protection.

Claims (10)

1. A vibration-damping module, characterized in that it comprises: a variable-length vibration-damping frame and a weight-changeable weight block located in the vibration-damping frame, and the weight block has two opposite end faces, so The two end faces of the counterweight are in elastic contact with the inner walls of the vibration damping frame on both sides respectively, and elastic pressing forces are formed on the end faces of the counterweight and the inner wall of the vibration damping frame, respectively. The force varies with the modulus of elasticity; The outer wall of the vibration-damping frame is provided with at least a pair of fixing elements, the orientation of the fixing elements is perpendicular to the axis of the counterweight itself, each of the fixing elements corresponds to a locking element, and the shock-absorbing frame passes through in sequence. The fixing element, the locking element and the vibration device are detachably connected. 2 . The vibration damping module according to claim 1 , further comprising: a spring is arranged between the counterweight and the vibration damping frame, and the spring is respectively connected to the counterweight and the vibration damping frame. 3 . Vibration damping frame card and. 3 . The vibration damping module according to claim 2 , wherein: the vibration damping frame is provided with an installation space for placing the counterweight and the spring. 4 . 4 . The vibration damping module according to claim 2 , comprising: the two end surfaces of the counterweight are provided with a structural level difference for engaging with the spring; the vibration damping frame The inner walls on both sides of the spring are provided with bumps for interlocking with the springs; each of the structural steps is spaced from the corresponding bumps, and the springs form compression potential energy between them. 5 . The vibration damping module of claim 1 , comprising: the weight of the counterweight block is 5-10% of the weight of the heat dissipation device. 6 . 6 . The vibration damping module according to claim 5 , wherein: the counterweight block adopts a cylindrical structure, and the weight of the counterweight block is set by controlling the diameter of the middle section. 7 . 7 . The vibration damping module according to claim 1 , wherein: the fixing element is a pin structure, and the pin structure is integrally formed with the vibration damping frame. 8 . 8. An externally mounted vibration damping module for a fan, comprising the vibration damping module according to any one of claims 1-7, further comprising: the locking element is a nylon rivet, and the vibration damping frame The fixing element and the nylon rivet are sequentially riveted with a vibration device, and the vibration device is a cooling fan. 9. A fan, comprising the vibration damping module according to any one of claims 1-7, further comprising: the locking element is a nylon rivet, and the vibration damping frame passes through the fixing element in sequence . The nylon rivet is riveted with a vibration device, and the vibration device is a cooling fan. 10 . The fan according to claim 9 , wherein a fan assembly guide hole is provided on the cooling fan, and the nylon rivet is combined with the corresponding fixing element to be inserted into the fan assembly guide hole. 11 .

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