Noise reduction structure of air blower of automobile air conditioner

Abstract

The utility model discloses an automobile air conditioner blower noise reduction structure which comprises a noise reduction unit, the noise reduction unit comprises a shell and a blower body matched with a sound insulation felt, the blower body is sleeved with an inner cavity of the shell, a sound insulation sleeve is fixedly installed at one end of the shell, and a cover plate is arranged on the outer surface of the sound insulation sleeve; one end of the cover plate is clamped with one end of the shell; the positioning unit comprises movable grooves symmetrically formed in the inner wall of the deadening felt, and inner cavities of the movable grooves are connected with T-shaped blocks in a sliding mode. Firstly, the connecting plate is lifted to the top end, then the positioning rod is inserted into the positioning hole through the handle so as to fix the connecting plate and the air blower body, then the air blower body is placed in the deadening felt, and after limiting of the connecting plate is removed, the T-shaped blocks are inserted into the T-shaped blocks. And the air blower body is stabilized, noise and vibration caused by shaking are avoided, the driving experience is improved, and interference to other parts is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of blower noise reduction, in particular to a noise reduction structure of an automobile air-conditioning blower. Background Art

[0002] Car air conditioning refers to an air conditioning device installed in a car that can cool, heat, ventilate and purify the air in the car, providing a comfortable riding environment for passengers, reducing driver fatigue and improving driving safety.

[0003] The Chinese patent with the authorization announcement number CN218439929U discloses a noise reduction structure for an automobile air-conditioning blower, and relates to the technical field of noise reduction for blowers. The utility model includes a shell, a sound insulation felt is arranged in the shell, the shell and the sound insulation felt are sleeved, the inner surface wall of the shell is respectively provided with a friction plate and a cotton ball, the friction plate and the sound insulation felt are abutted, a T-shaped plate is arranged in the shell, a butt plate is arranged on the surface of the T-shaped plate, a fastening bolt is arranged in the T-shaped plate, the fastening bolt is threadedly connected with the T-shaped plate, the bottom of the fastening bolt extends into the shell, and a sponge cover is arranged on the outside of the shell. The utility model can fully reduce the noise generated by the blower body when it is working by arranging the sound insulation felt, the sponge cover, the sound-absorbing cotton, the cotton ball and the sound insulation cover for coordinated use, so as to avoid the phenomenon that the driver becomes irritable and anxious when driving the car due to the presence of large noise, improve the safety of the driver when driving the car, and also improve the practicality of the blower body when in use.

[0004] However, in the implementation of relevant technologies, it was found that the above-mentioned automobile air-conditioning blower noise reduction structure design has the following problems: the slide plate and extrusion plate on the side of the sound-absorbing cotton extend into the side groove, and the sound-absorbing cotton is sleeved with the blower body, but the blower cannot be positioned, resulting in the blower shaking, which will directly cause additional noise and vibration when the blower is running. This not only affects the driver's driving experience, but may also interfere with other internal parts of the vehicle. At the same time, shaking may cause uneven air supply and affect the air conditioning effect. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above problems existing in the existing noise reduction structure of the automobile air-conditioning blower, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a noise reduction structure for automobile air conditioning blower, which is suitable for solving the problem that the blower cannot be positioned, causing it to shake, thereby generating additional noise and vibration, affecting the driving experience, and interfering with other parts in the car. At the same time, shaking may also cause uneven air supply, affecting the air conditioning effect.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a noise reduction structure for an automobile air-conditioning blower, comprising:

[0009] The noise reduction unit comprises a shell and a blower body matched with the sound insulation felt, the blower body is sleeved in the inner cavity of the shell, a sound insulation sleeve is fixedly installed at one end of the shell, a cover plate is arranged on the outer surface of the sound insulation sleeve, and one end of the cover plate is clamped with one end of the shell;

[0010] A positioning unit, comprising movable grooves symmetrically opened on the inner wall of the sound insulation felt, the inner cavities of the movable grooves are slidably connected with T-shaped blocks, and the opposite surfaces of the T-shaped blocks are fixedly connected to the outer surface of the shell, two groups of movable grooves are opened on both sides with card slots, and sliding cavities are symmetrically opened on both sides of the inner cavity of the sound insulation felt, and the inner cavities of the two groups of sliding cavities are fixedly installed with two groups of telescopic springs, the bottom ends of the telescopic springs are fixedly installed with connecting plates, the bottom ends of the connecting plates are fixedly installed with plug blocks, and the plug blocks and the card slots are slidably connected.

[0011] As a preferred solution of the automobile air-conditioning blower noise reduction structure described in the utility model, the inner wall of the sliding cavity is symmetrically provided with sliding grooves, the inner cavity of the sliding groove is slidably connected with a slider, and the opposite surfaces of the slider are fixedly connected to the two sides of the connecting plate.

[0012] As a preferred solution of the noise reduction structure of an automobile air-conditioning blower described in the utility model, wherein: a limit block is fixedly installed on one side of the connecting plate close to the outer shell, positioning holes are opened on both sides of the limit block, and several groups of fixed blocks are installed on both sides of the inner wall of the sound insulation felt, one side of the fixed block is slidably connected with a positioning rod, one end of the positioning rod is fixedly installed with a handle, and the other end of the positioning rod is slidably connected to the positioning hole.

[0013] As a preferred solution of the noise reduction structure of an automobile air-conditioning blower described in the utility model, the noise reduction structure also includes a limiting unit, which includes a shell arranged on the outer surface of the shell, and friction plates are symmetrically installed on the inner wall of the shell, and the opposing surfaces of the friction plates are tightly fitted with the outer surface of the sound insulation felt, and the side of the fixing bolt close to the sound insulation felt is provided with anti-slip grooves.

[0014] As a preferred solution of the automobile air-conditioning blower noise reduction structure described in the utility model, T-shaped plates are symmetrically installed on both sides of the shell, both sides of the top of the T-shaped plate are threadedly connected with fixing bolts, and the bottom ends of the fixing bolts are threadedly connected to the surface of the shell.

[0015] As a preferred solution of the automobile air-conditioning blower noise reduction structure described in the utility model, a rubber block is arranged on one side of the plurality of groups of T-shaped plates close to the sound insulation felt, and the rubber block abuts against both sides of the sound insulation felt.

[0016] The beneficial effects of the utility model are as follows: first, the connecting plate is raised to the top, and then the positioning rod is inserted into the positioning hole using the handle to fix the connecting plate. The blower body is then placed in the sound insulation felt. After the limit of the connecting plate is released, the telescopic spring pops it out and inserts it into the slot to stabilize the blower body, avoid noise and vibration caused by shaking, improve driving experience and reduce interference with other parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0018] Figure 1 This is a schematic diagram of the overall structure of a noise reduction structure for an automobile air-conditioning blower proposed by the utility model;

[0019] Figure 2 This is a side structural schematic diagram of a noise reduction structure for an automobile air-conditioning blower proposed by the utility model;

[0020] Figure 3 The utility model is a schematic diagram of the positioning structure of a noise reduction structure of an automobile air-conditioning blower.

[0021] Description of the drawings: 100, noise reduction unit; 101, blower body; 102, sound insulation felt; 103, shell; 104, shell; 105, cover plate; 200, limit unit; 201, T-shaped plate; 202, fixing bolt; 203, friction plate; 300, positioning unit; 301, T-shaped block; 302, movable groove; 303, telescopic spring; 304, connecting plate; 305, plug block; 306, slide groove; 307, slider; 308, limit block; 309, positioning hole; 310, fixing block; 311, positioning rod; 312, handle; 313, sliding cavity. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0025] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0026] Reference Figure 1-Figure 3 , which is an embodiment of the utility model, provides a noise reduction structure for an automobile air-conditioning blower, including a noise reduction unit 100, a limiting unit 200 and a positioning unit 300;

[0027] The noise reduction unit 100 includes a shell 103 and a blower body 101 matched with the sound insulation felt 102. The inner cavity of the shell 103 is sleeved with the blower body 101. A sound insulation sleeve is fixedly installed on one end of the shell 103, and a cover plate 105 is provided on the outer surface of the sound insulation sleeve. One end of the cover plate 105 is clamped with one end of the shell 103. The sound insulation felt 102, the shell 103 and the sound insulation sleeve are used in coordination to fully reduce the noise generated by the blower body 101 when it is working, so as to avoid the phenomenon that the driver becomes irritable and anxious when driving a car due to the presence of large noise.

[0028] The positioning unit 300 includes movable grooves 302 symmetrically opened on the inner wall of the sound insulation felt 102, the inner cavities of the movable grooves 302 are slidably connected with T-shaped blocks 301, and the opposite surfaces of the T-shaped blocks 301 are fixedly connected to the outer surface of the shell 103, and the two groups of movable grooves 302 are provided with card slots on both sides, and sliding cavities 313 are symmetrically opened on both sides of the inner cavity of the sound insulation felt 102. Two groups of telescopic springs 303 are fixedly installed in the inner cavities of the two groups of sliding cavities 313, and the bottom ends of the telescopic springs 303 are fixedly installed with connecting plates 304, and the bottom ends of the connecting plates 304 are fixedly installed. An insert block 305 is installed, and the insert block 305 and the slot are slidably connected. The connecting plate 304 is first moved upward. When the connecting plate 304 moves, the telescopic spring 303 is squeezed. The blower body 101 enters the inner cavity of the sound insulation felt 102 through the T-shaped block 301, and the limit on the connecting plate 304 is cancelled. The telescopic spring 303 pops the connecting plate 304 downward and inserts it into the slot, completing the positioning of the blower body 101 to prevent shaking during operation, thereby generating additional noise and vibration, affecting the driving experience, and interfering with other parts in the car.

[0029] The inner wall of the sliding cavity 313 is symmetrically provided with sliding grooves 306, and the inner cavity of the sliding grooves 306 is slidably connected with sliders 307. The opposite surfaces of the sliders 307 are fixedly connected to the two sides of the connecting plate 304. When the connecting plate 304 moves, it drives the sliders 307 to slide in the sliding grooves 306. The sliders 307 ensure the stability of the connecting plate 304 during the movement.

[0030] A limiting block 308 is fixedly installed on one side of the connecting plate 304 close to the outer shell 103, and positioning holes 309 are opened on both sides of the limiting block 308. A plurality of groups of fixing blocks 310 are installed on both sides of the inner wall of the sound insulation felt 102. A positioning rod 311 is slidably connected to one side of the fixing block 310. A handle 312 is fixedly installed on one end of the positioning rod 311, and the other end of the positioning rod 311 is slidably connected to the positioning hole 309. By inserting one end of the positioning rod 311 into the positioning holes 309 opened on both sides of the limiting block 308 through the handle 312, the connecting plate 304 can be limited, which facilitates the subsequent movement of the blower body 101 into the inner cavity of the sound insulation felt 102.

[0031] The limiting unit 200 includes a shell 104 arranged on the outer surface of the shell 104, and friction plates 203 are symmetrically installed on the inner wall of the shell 104. The opposite surfaces of the friction plates 203 are tightly fitted with the outer surface of the sound insulation felt 102, and the fixing bolt 202 is provided with anti-slip grooves on the side close to the sound insulation felt 102. When the sound insulation felt 102 enters the interior of the shell 104, the friction plates 203 on both sides will limit it.

[0032] T-shaped plates 201 are symmetrically installed on both sides of the shell 104, and fixing bolts 202 are threadedly connected to both sides of the top of the T-shaped plate 201, and the bottom end of the fixing bolts 202 is threadedly connected to the surface of the shell 104. The T-shaped plate 201 is installed on the surface of the shell 104 by the fixing bolts 202 to limit the sound insulation felt 102.

[0033] A rubber block is disposed on one side of the plurality of groups of T-shaped plates 201 close to the sound insulation felt 102 , and the rubber block abuts against both sides of the sound insulation felt 102 , so that the sound insulation felt 102 can also be protected when being limited.

[0034] During use, the connecting plate 304 is first moved upward. When the connecting plate 304 moves to the top, one end of the positioning rod 311 is inserted into the positioning hole 309 opened on both sides of the limiting block 308 through the handle 312, so as to complete the limiting of the connecting plate 304. The blower body 101 enters the inner cavity of the sound insulation felt 102 through the T-shaped block 301, and the limiting of the connecting plate 304 is cancelled. The telescopic spring 303 pops up the connecting plate 304 downward and inserts it into the card slot, thereby completing the positioning of the blower body 101 and preventing shaking during operation, thereby causing additional External noise and vibration affect the driving experience and interfere with other parts in the car. The sound insulation felt 102 is placed in the shell 104. The friction plates 203 on both sides will limit it. The T-shaped plate 201 is installed on the surface of the shell 104 through the fixing bolts 202, so that the side of the T-shaped plate 201 is in contact with the sound insulation felt 102. The coordinated use of the sound insulation felt 102, the shell 103 and the sound insulation sleeve can fully reduce the noise generated by the blower body 101 when it is working, and avoid the driver's irritability and anxiety when driving the car due to the presence of large noise.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A noise reduction structure for a car air-conditioning blower, characterized in that: include: A noise reduction unit (100) comprises a housing (103) and a blower body (101) mounted in matching relation with a sound insulation felt (102); the blower body (101) is sleeved in an inner cavity of the housing (103); a sound insulation sleeve is fixedly mounted on one end of the housing (103); a cover plate (105) is disposed on the outer surface of the sound insulation sleeve; and one end of the cover plate (105) is snap-fitted to one end of the housing (103); A positioning unit (300) comprises movable grooves (302) symmetrically arranged on the inner wall of a sound insulation felt (102), the inner cavities of the movable grooves (302) are slidably connected to T-shaped blocks (301), and the opposite surfaces of the T-shaped blocks (301) are fixedly connected to the outer surface of the housing (103), two groups of movable grooves (302) are provided with card slots on both sides, sliding cavities (313) are symmetrically arranged on both sides of the inner cavity of the sound insulation felt (102), two groups of telescopic springs (303) are fixedly installed in the inner cavities of the two groups of sliding cavities (313), a connecting plate (304) is fixedly installed at the bottom end of the telescopic springs (303), an insert block (305) is fixedly installed at the bottom end of the connecting plate (304), and the insert block (305) is slidably connected to the card slot.

2. The automobile air-conditioning blower noise reduction structure according to claim 1, characterized in that: The inner wall of the sliding cavity (313) is symmetrically provided with sliding grooves (306), the inner cavity of the sliding grooves (306) is slidably connected with a sliding block (307), and the opposite surfaces of the sliding block (307) are fixedly connected to the two sides of the connecting plate (304).

3. The automobile air-conditioning blower noise reduction structure according to claim 1, characterized in that: A limit block (308) is fixedly installed on one side of the connection plate (304) close to the outer shell (103), and positioning holes (309) are provided on both sides of the limit block (308). A plurality of groups of fixed blocks (310) are installed on both sides of the inner wall of the sound insulation felt (102), and a positioning rod (311) is slidably connected to one side of the fixed block (310), a handle (312) is fixedly installed on one end of the positioning rod (311), and the other end of the positioning rod (311) is slidably connected to the positioning hole (309).

4. The automobile air-conditioning blower noise reduction structure according to claim 1, characterized in that: The noise reduction structure further comprises a limiting unit (200), which comprises a shell (104) arranged on the outer surface of the shell (104), and a friction plate (203) is symmetrically mounted on the inner wall of the shell (104), and the opposite surfaces of the friction plates (203) are tightly fitted with the outer surface of the sound insulation felt (102), and an anti-slip groove is provided on a side of the fixing bolt (202) close to the sound insulation felt (102).

5. The automobile air-conditioning blower noise reduction structure according to claim 4, characterized in that: T-shaped plates (201) are symmetrically mounted on both sides of the shell (104), both sides of the top of the T-shaped plate (201) are threadedly connected with fixing bolts (202), and the bottom ends of the fixing bolts (202) are threadedly connected to the surface of the shell (104).

6. The automobile air-conditioning blower noise reduction structure according to claim 5, characterized in that: A rubber block is provided on one side of the plurality of groups of T-shaped plates (201) close to the sound insulation felt (102), and the rubber block abuts against two sides of the sound insulation felt (102).

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