CN220890609U

CN220890609U - Damping assembly and fan assembly

Info

Publication number: CN220890609U
Application number: CN202322742577.7U
Authority: CN
Inventors: 王日聪; 谭赞松; 黄章义; 罗海员
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2023-10-12
Filing date: 2023-10-12
Publication date: 2024-05-03
Anticipated expiration: 2033-10-12

Abstract

The utility model provides a damping component and a fan component. The damping component comprises an upper end cover; the lower end cover is arranged on one side of the upper end cover; the damping structure is provided with a first end and a second end which are opposite, the first end is connected with the upper end cover, and the second end is connected with the lower end cover; elastic shock-absorbing structure. According to the damping component and the fan component, the elastic damping structure is arranged, the first interval is utilized to enable the elastic damping structure not to participate in damping when the structure to be damped normally works, and the elastic damping structure participates in damping when the structure to be damped is subjected to vibration (low-frequency vibration) with lower frequency and larger amplitude, so that the problem that the damping structure is broken and damaged due to the low-frequency vibration is avoided, the working reliability of the damping component is ensured, the impact damage to the structure to be damped is reduced, the service reliability and the service life of the structure to be damped are improved.

Description

Damping assembly and fan assembly

Technical Field

The utility model relates to the technical field of damping structures, in particular to a damping component and a fan component.

Background

At present, most axial flow fans of air conditioners are provided with vibration damping rubber rings by mounting feet, the high-frequency vibration isolation performance of the rubber is good, the sound insulation effect is also good, however, the rubber is easy to corrode and age, is easy to deform and damage, particularly, the vehicle-mounted air conditioner is provided, the rubber rings are subjected to vibration and impact under severe road conditions to cause irreversible damage, and the rubber rings are seriously broken. The failure of the damping function of the rubber ring is very easy to cause the damage of the fan, and the normal service life of the fan is influenced.

Disclosure of utility model

In order to solve the technical problem of poor reliability caused by the fact that the rubber ring is damaged due to larger vibration and impact in the prior art, the damping component and the fan component which absorb low-frequency vibration by utilizing the elastic damping structure so as to avoid the damage of the damping structure are provided.

A shock absorbing assembly comprising:

An upper end cap;

the lower end cover is arranged on one side of the upper end cover;

The damping structure is provided with a first end and a second end which are opposite, the first end is connected with the upper end cover, and the second end is connected with the lower end cover;

The elastic shock absorption structure is arranged on the lower end cover, and a first interval is reserved between the elastic shock absorption structure and the upper end cover.

The damping assembly is applied to a structure to be damped, and after the damping assembly and the structure to be damped are mutually locked, the installation deformation amount of the damping structure is smaller than or equal to the first interval.

The relation between the length of the damping shock-absorbing structure and the length of the elastic shock-absorbing structure is as follows:

L≤h-a；

Wherein L is the length of the elastic shock absorption structure; h is the length of the initial state of the damping structure, and a is the mounting deformation quantity of the damping structure.

The damping assembly further comprises a locking piece, the locking piece penetrates through the upper end cover, the damping structure and the lower end cover in sequence, and the locking piece is used for locking the damping assembly and the structure to be damped.

The upper end cover is provided with a first groove, and the first end is positioned in the first groove.

The lower end cover is provided with a second groove, and the second end is positioned in the second groove.

The damping shock-absorbing structure comprises a rubber block, the elastic shock-absorbing structure comprises a spring, and the spring is sleeved on the rubber block.

The damping shock-absorbing structure comprises a rubber block, the elastic shock-absorbing structure comprises a spring, a mounting hole is formed in the rubber block, and the spring is arranged in the mounting hole.

The damping vibration absorbing structure comprises a first vibration absorber, and the vibration absorbing frequency of the first vibration absorber is higher than that of the elastic vibration absorbing structure.

A fan assembly comprises the damping assembly.

According to the damping assembly and the fan assembly, the damping structure is arranged between the upper end cover and the lower end cover to damp vibration (high-frequency vibration) of the damping structure during normal operation, the elastic damping structure is arranged, the first interval is utilized to enable the elastic damping structure not to participate in damping when the damping structure is in normal operation, and the elastic damping structure participates in damping when the damping structure is subjected to vibration (low-frequency vibration) with lower frequency and larger amplitude, so that the problem that the damping structure is broken and damaged due to the low-frequency vibration is avoided, the working reliability of the damping assembly is ensured, the impact damage to the damping structure is reduced, and the service reliability and the service life of the damping structure are improved.

Drawings

FIG. 1 is a schematic view of a shock absorbing assembly according to an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of a shock assembly provided in accordance with an embodiment of the present utility model;

FIG. 3 is a schematic structural diagram of a fan assembly according to an embodiment of the present utility model;

FIG. 4 is a cross-sectional view of a fan assembly provided by an embodiment of the present utility model;

In the figure:

1. An upper end cap; 2. a lower end cap; 3. damping shock-absorbing structure; 4. an elastic shock absorbing structure; 5. a locking member; 6. a motor; 7. a net cover.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It should be noted that the terms "first," "second," and the like in the description and the claims of the present utility model and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the utility model described herein are, for example, capable of operation in other environments. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be noted that, in the description of the present utility model, terms such as "upper," "lower," "left," "right," "inner," "outer," and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the apparatus or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.

The shock-absorbing structure in the prior art generally adopts to treat shock-absorbing structure department and sets up the shock-absorbing rubber circle, utilize shock-absorbing rubber circle's elastic deformation, the vibration that treats shock-absorbing structure and receive is kept apart, sound insulation effect is also fine simultaneously, however rubber is easy to corrode ageing, be liable to deform and damage, especially when using on the vehicle, take fan in the vehicle-mounted air conditioner and motor as the example, set up the rubber circle between fan and motor and carry out shock attenuation sound insulation, and under the abominable circumstances of road conditions, the vibration that the rubber circle received produces can not damage with the impact, serious can cause the rubber circle to break, finally cause the damage of fan and motor, influence the normal life of fan even air conditioner. To this end, the present application provides a shock absorbing assembly as shown in fig. 1 to 4, comprising: an upper end cap 1; a lower end cap 2, wherein the lower end cap 2 is arranged at one side of the upper end cap 1; a damping vibration attenuation structure 3, wherein the damping vibration attenuation structure 3 has a first end and a second end which are opposite, the first end is connected with the upper end cover 1, and the second end is connected with the lower end cover 2; the elastic shock-absorbing structure 4 is arranged on the lower end cover 2, and a first interval is reserved between the elastic shock-absorbing structure 4 and the upper end cover 1. Set up damping shock-absorbing structure 3 between upper end cover 1 and lower end cover 2 and come to treat shock-absorbing structure and carry out vibration (high frequency vibration) vibration when normally working to set up elastic shock-absorbing structure 4, utilize first interval to make elastic shock-absorbing structure 4 not participate in the shock attenuation when treating shock-absorbing structure normal working, and when treating shock-absorbing structure and receive the lower and great vibration of amplitude (low frequency vibration), elastic shock-absorbing structure 4 participates in the shock attenuation, thereby avoid damping shock-absorbing structure 3 to receive the aforesaid problem that low frequency vibration breaks the damage, guarantee the reliability of damper work, alleviate the impact damage who treats shock-absorbing structure receive, improve the reliability and the life of the service of treating shock-absorbing structure.

Wherein, in order to guarantee that the installation of damping shock-absorbing structure 3 is reliable to make damping shock-absorbing structure 3 can satisfy the sound insulation effect among the prior art, receive the effect of the extrusion force that produces to damper after waiting to shock-absorbing structure's completion installation, damping shock-absorbing structure 3 can produce partial deformation, make the first end and the sealed cooperation of upper end cover 1 butt of damping shock-absorbing structure 3, the sealed cooperation of second end and the sealed cooperation of lower extreme cover 2 butt, utilize sealed cooperation to guarantee damping shock-absorbing structure 3's sound insulation effect, specifically, damper is applied to waiting to shock-absorbing structure, and damper with wait to shock-absorbing structure after locking each other, damping shock-absorbing structure 3's installation deformation volume is less than or equal to first interval. The mounting deformation amount of the damping vibration absorbing structure 3 refers to the deformation amount generated by the damping vibration absorbing structure 3 when the vibration absorbing component and the structure to be damped are mounted and the structure to be damped is not in a working state and moves. Because the installation deformation amount is smaller than or equal to the first interval, after the damping component and the structure to be damped are installed, the elastic damping structure 4 cannot be extruded by the upper end cover 1, at the moment, the elastic damping structure 4 just contacts with the upper end cover 1, and only when the structure to be damped is subjected to low-frequency vibration, the elastic damping structure 4 participates in damping, namely, when the structure to be damped normally works to generate high-frequency vibration, the damping structure 3 plays a main damping role, the elastic damping structure 4 does not basically participate in damping, when the structure to be damped is subjected to low-frequency vibration, the elastic damping structure 4 participates in damping, and the damping structure 3 is prevented from being damaged due to transitional deformation, so that the effect of protecting the damping structure 3 is achieved, and the reliability of the damping structure 3 and the reliability of the structure to be damped are ensured.

Or after the damping component and the structure to be damped are mounted, the elastic damping structure 4 is not extruded by the upper end cover 1, at this moment, a certain distance is reserved between the elastic damping structure 4 and the upper end cover 1, and only when the structure to be damped is subjected to low-frequency vibration, the elastic damping structure 4 participates in damping, namely, when the structure to be damped works normally and generates high-frequency vibration, the damping structure 3 plays a main damping role because of high frequency vibration but small amplitude, the elastic damping structure 4 cannot contact the upper end cover 1 but does not participate in damping, when the structure to be damped is subjected to low-frequency vibration, the frequency of the low-frequency vibration is low but large amplitude, the relative displacement between the upper end surface and the lower end surface exceeds the size of the first distance, at this moment, the elastic damping structure 4 participates in damping, and the damping structure 3 is prevented from generating transitional deformation and being damaged, so that the damping structure 3 is protected, and the reliability of the damping structure 3 and the damping reliability of the structure to be damped are ensured.

Design of the damping structure 3 and the mounting deformation a (a > 0):

Firstly, selecting the maximum vibration frequency fmax according to the vibration frequency (high-frequency vibration frequency) range generated when a structure to be damped normally works;

The formula is:

K＝m×(2πfmax)2；

Wherein K is the rigidity of the damping structure 3; m is the mass of the damping structure 3;

The stiffness K of the damping structure 3 is calculated so that a matching damping structure 3 is selected.

Then, the following formula is adopted:

K＝S×Ec/h；

S is the bearing area of the damping structure 3, and the unit is mm ²; ec is the compression modulus of the damping structure 3 in MPa; h is the height of the damping structure 3, and the unit is mm;

the compression modulus Ec of the damping structure 3 is calculated, and the installation deformation amount a is set according to the compression modulus Ec.

Then the elastic shock absorbing structure 4 is shaped:

According to the vibration frequency (low-frequency vibration frequency) range generated when the structure to be damped is subjected to severe environment, the minimum vibration frequency f is selected, the rigidity K of the elastic damping structure 4 is calculated, and finally the elastic damping structure 4 is selected.

At this time, the relationship between the length of the damping vibration absorbing structure 3 and the length of the elastic vibration absorbing structure 4 is:

L≤h-a；

Wherein L is the length of the elastic shock-absorbing structure 4; h is the length of the damping vibration attenuation structure 3 in the initial state, and a is the installation deformation amount of the damping vibration attenuation structure 3.

The damping assembly further comprises a locking piece 5, the locking piece 5 sequentially penetrates through the upper end cover 1, the damping and damping structure 3 and the lower end cover 2, and the locking piece 5 is used for locking the damping assembly and the structure to be damped. After the locking of the damping component and the structure to be damped is completed by the locking member 5, the damping structure 3 is deformed into an installation deformation amount at this time. As shown in fig. 2, a through hole is provided at the central axis of the damper, and the locking member 5 penetrates through the damper through the through hole, thereby achieving connection with the damper and the structure to be damped. In fig. 2, an upper mounting hole is formed in the upper end cap 1, a lower mounting hole is formed in the lower end cap 2, a via hole is formed in the damping vibration absorbing structure 3, and a locking member 5 sequentially penetrates through the upper mounting hole, the via hole and the lower mounting hole to realize penetration of the vibration absorbing assembly.

Wherein, be provided with first recess on the upper end cover 1, first end is located in the first recess. Utilize first recess to guarantee the reliable connection of damping shock-absorbing structure 3 and upper end cover 1, avoid damping shock-absorbing structure 3 to receive the vibration and break away from upper end cover 1, first recess also can restrict the deformation of first damping shock-absorbing structure 3 simultaneously, avoid damping shock-absorbing structure 3 deformation excessively and cause the problem of damage, play the effect of protection damping shock-absorbing structure 3, slow down damping shock-absorbing structure 3's vibration wearing and tearing, improve damping shock-absorbing structure 3's life-span.

Likewise, the lower end cover 2 is provided with a second groove, and the second end is located in the second groove. Utilize first recess to guarantee the reliable connection of damping shock-absorbing structure 3 and bottom end cover 2, avoid damping shock-absorbing structure 3 to receive the vibration and break away from bottom end cover 2, first recess also can restrict the deformation of first damping shock-absorbing structure 3 simultaneously, avoid damping shock-absorbing structure 3 deformation excessively and cause the problem of damage, play the effect of protection damping shock-absorbing structure 3, slow down damping shock-absorbing structure 3's vibration wearing and tearing, improve damping shock-absorbing structure 3's life-span.

Further, the end of the elastic shock absorbing structure 4 is located in the second groove. The mounting reliability of the elastic shock absorbing structure 4 is ensured.

As an embodiment, the damping vibration attenuation structure 3 comprises a rubber block, and the elastic vibration attenuation structure 4 comprises a spring, and the spring is sleeved on the rubber block. The spring can be deformed along the interval direction between the upper end cover 1 and the lower end cover 2, and the deformation of the rubber block in the radial direction can not be changed, so that the deformation of the rubber block in the radial direction can be limited, the problem of damage caused by excessive deformation of the rubber block is avoided, the function of protecting the rubber block is played, the vibration abrasion of the rubber block is slowed down, and the service life of the rubber block is prolonged.

As another implementation mode, the damping vibration absorbing structure 3 comprises a rubber block, the elastic vibration absorbing structure 4 comprises a spring, a mounting hole is formed in the rubber block, the spring is arranged in the mounting hole, the spring is prevented from vibrating to swing, and the position of the elastic vibration absorbing structure 4 is guaranteed to be reliable.

As another embodiment, the damping vibration absorbing structure 3 includes a first damper, and only the damping frequency of the first damper is higher than the damping frequency of the elastic vibration absorbing structure 4, so that the vibration absorbing assembly can absorb the high-frequency vibration of the vibration absorbing structure, and meanwhile, the elastic vibration absorbing structure 4 can also protect the first damper, thereby ensuring the reliability of the vibration absorbing assembly.

A fan assembly comprises the damping assembly. The fan assembly comprises a fan and a screen 7, a motor 6 of the fan is fixed on the screen 7 through a shock absorber, a locking piece 5 is a bolt, a rubber block and a spring are sleeved outside a rubber pad, the rubber block and the spring are limited through an upper end cover 1 and a lower end cover 2, the bolt penetrates through the rubber block to fix the motor 6 on the screen 7, after the motor 6 is fixed, an installation deformation quantity a is set according to the rigidity outline dimension and the height of the rubber block, the upper end cover 1 and the lower end cover 2 are just attached to the spring after the rubber block is compressed a after the fan is assembled, the fan is in an unstressed state, a vibration source is mainly high-frequency vibration of the fan and the compressor at the moment when the air conditioner is in normal operation, the spring does not work at the moment, the rubber pad is a damping block for mainly damping vibration, when a vehicle-mounted road condition is greatly influenced by low-frequency vibration, at the moment, the spring plays a main role of absorbing the low-frequency vibration, the damage of vibration impact to the motor 6 is lightened, and the fan assembly and the air conditioner is ensured to be reliable.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. A shock absorbing assembly, characterized in that: comprising the following steps:

An upper end cap (1);

The lower end cover (2) is arranged on one side of the upper end cover (1);

A damping vibration attenuation structure (3), wherein the damping vibration attenuation structure (3) is provided with a first end and a second end which are opposite, the first end is connected with the upper end cover (1), and the second end is connected with the lower end cover (2);

elastic shock-absorbing structure (4), elastic shock-absorbing structure (4) set up in on lower end cover (2), just elastic shock-absorbing structure (4) with have first interval between upper end cover (1).

2. The shock assembly as set forth in claim 1 wherein: the damping assembly is applied to a structure to be damped, and after the damping assembly and the structure to be damped are mutually locked, the mounting deformation amount of the damping structure (3) is smaller than or equal to the first interval.

3. The shock assembly as set forth in claim 2 wherein: the relation between the length of the damping shock-absorbing structure (3) and the length of the elastic shock-absorbing structure (4) is as follows:

L≤h-a；

wherein L is the length of the elastic shock absorption structure (4); h is the length of the damping structure (3) in the initial state, and a is the mounting deformation amount of the damping structure (3).

4. The shock assembly as set forth in claim 2 wherein: the damping assembly further comprises a locking piece (5), the locking piece (5) sequentially penetrates through the upper end cover (1), the damping and damping structure (3) and the lower end cover (2), and the locking piece (5) is used for locking the damping assembly and the damping structure to be damped.

5. The shock assembly as set forth in claim 1 wherein: the upper end cover (1) is provided with a first groove, and the first end is positioned in the first groove.

6. The shock assembly as claimed in claim 1 or 5, wherein: the lower end cover (2) is provided with a second groove, and the second end is positioned in the second groove.

7. The shock assembly as set forth in claim 1 wherein: the damping shock-absorbing structure (3) comprises a rubber block, the elastic shock-absorbing structure (4) comprises a spring, and the spring is sleeved on the rubber block.

8. The shock assembly as set forth in claim 1 wherein: the damping shock-absorbing structure (3) comprises a rubber block, the elastic shock-absorbing structure (4) comprises a spring, a mounting hole is formed in the rubber block, and the spring is arranged in the mounting hole.

9. The shock assembly as set forth in claim 1 wherein: the damping vibration attenuation structure (3) comprises a first vibration absorber, and the vibration attenuation frequency of the first vibration absorber is higher than that of the elastic vibration attenuation structure (4).

10. A fan assembly, characterized in that: comprising a shock absorbing assembly according to any one of claims 1 to 9.