Automobile electric appliance accessory rack testing device

Abstract

The utility model discloses an automobile electric appliance accessory rack test device used for testing automobile electric appliance accessories, the automobile electric appliance accessory rack test device comprises a mute device, the mute device comprises a mute cabin, a support layer and a pickup device, and the mute cabin forms a mute cavity; the supporting layer is located in the mute cavity and connected to the mute bin in a lifting mode, and the supporting layer is detachably connected with automobile electric appliance accessories. The pickup device is arranged on the supporting layer and used for picking up noise of the automobile electric appliance accessories. According to the automobile electric appliance accessory rack testing device, a relatively quiet acoustic environment can be obtained, and the acoustic environment requirement of noise test evaluation is met; the height of the supporting layer in the mute cavity can be changed, the requirements for automobile electric appliance accessories of different types and different sizes can be met, and therefore the universality is improved, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a test device for an automotive electrical accessory bench. Background Art

[0002] Existing bench testers are used to evaluate noise and vibration in compressors. However, some existing bench testers not only produce excessive background noise during testing, making it difficult to meet the acoustic environment requirements for noise and vibration testing, but also cannot accommodate the testing of compressors of varying sizes and other automotive electrical accessories, limiting their use. Utility Model Content

[0003] The present application provides a bench test device for automotive electrical accessories to solve the problem that some existing step test devices not only have noisy background noise during testing, making it difficult to meet the acoustic environment requirements for noise and vibration test evaluation; but also cannot meet the testing of compressors and other automotive electrical accessories of different sizes, resulting in limited use of the bench test device.

[0004] In order to solve the above technical problems, the present application proposes a bench test device for automobile electrical accessories, which is used to test automobile electrical accessories, including a mute device, which includes: a mute chamber, which forms a mute cavity; a support layer, which is located in the mute cavity and can be lifted and connected to the mute chamber, and the support layer is detachably connected to the automobile electrical accessories; a sound pickup device, which is arranged on the support layer and is used to pick up the noise of the automobile electrical accessories.

[0005] Among them, the silent chamber includes a silent frame, the silent device includes a support seat and a first adjustable part, the support layer is connected to the support seat, the support seat is sleeved on the silent frame, and the support seat is lifted and abutted against the silent frame through the first adjustable part.

[0006] Among them, the outer periphery of the support seat is provided with a first supporting part and a second supporting part which are arranged opposite to each other, and the mute device includes a first fixing part and a second fixing part, the first fixing part is passed through and connected to the first supporting part; the second fixing part is passed through and connected to the second supporting part, and the support layer can be releasably locked between the first fixing part and the second fixing part.

[0007] The mute device includes an elastic member, which passes through the support layer and is connected between the first support portion and the second support portion.

[0008] Among them, the silent chamber includes a silent layer, which is arranged on the silent frame; the silent layer includes a wave sound absorbing layer, a plane sound absorbing layer and a fixed layer in sequence from the silent cavity to the outside, and the wave sound absorbing layer, the plane sound absorbing layer and the fixed layer are covered with at least a partial sealing ring on the outer periphery.

[0009] The silent frame is arranged in a square shape, and a silent layer is arranged on each side of the square body. At least one silent layer can be connected to the silent frame in an openable and closable manner.

[0010] Among them, the automotive electrical accessories include a compressor, the automotive electrical accessories bench test device includes a cooling device, the cooling device is located on the periphery of the mute device, and the compressor is connected to the cooling device through a pipeline assembly.

[0011] The cooling device includes a cooling frame, a fan component connected to the cooling frame, an evaporator and a condenser. The evaporator is arranged between the fan component and the condenser, and the compressor is connected to the evaporator through a pipeline assembly.

[0012] Among them, the fan part, evaporator and condenser are arranged along the first direction, and a first air guide cover is arranged between the fan part and the cooling frame; and / or, a second air guide cover is arranged between the fan part and the evaporator; and / or, a third air guide cover is arranged between the evaporator and the condenser; and / or, a fourth air guide cover is arranged between the condenser and the cooling frame.

[0013] In which, the cooling device includes a rotating support assembly, and the fan part and / or condenser is connected to the cooling frame through the rotating support assembly; the rotating support assembly includes a supporting bracket and a rotating bracket, one end of the supporting bracket is connected to the cooling frame, one end of the rotating bracket is rotatably connected to the other end of the supporting bracket through a second adjustable part, and the other end of the rotating bracket is connected to the fan part and / or condenser.

[0014] The beneficial effects of the present application are as follows: Different from the prior art, the present application provides a bench test device for automotive electrical accessories, which is used to test automotive electrical accessories. The bench test device for automotive electrical accessories includes a mute device. The mute device includes a mute chamber, a support layer, and a sound pickup device. The mute chamber forms a mute cavity. The support layer is located in the mute cavity and is liftably connected to the mute chamber. The support layer is detachably connected to the automotive electrical accessories. The sound pickup device is provided on the support layer for picking up noise from the automotive electrical accessories.

[0015] The mute device, through the mute chamber, provides a relatively quiet acoustic environment, enabling the automotive electrical accessory test bench to meet the acoustic requirements for noise testing and evaluation. Furthermore, by allowing the support layer to be raised and lowered to the chamber, the support layer can be positioned at varying heights within the chamber, allowing the test bench to accommodate various types and sizes of automotive electrical accessories. This improves the test bench's versatility and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0017] Figure 1 This is a schematic diagram of the explosion of the mute device in the automotive electrical accessories bench test device of the present application;

[0018] Figure 2 yes Figure 1 A schematic structural diagram shown;

[0019] Figure 3 This is a partial schematic diagram of the mute device in the automotive electrical accessories bench test device of the present application;

[0020] Figure 4 yes Figure 3 The structural diagram of B shown;

[0021] Figure 5 This is a schematic diagram of the explosion of the mute layer in the automotive electrical accessories bench test device of the present application;

[0022] Figure 6 This is a structural diagram of an embodiment of the automotive electrical accessories bench test device of the present application;

[0023] Figure 7 This is a schematic diagram of the structure of the cooling device in the automotive electrical accessories bench test device of the present application;

[0024] Figure 8 This is a first partial schematic diagram of the cooling device in the automotive electrical accessories bench test device of the present application;

[0025] Figure 9 This is a second partial schematic diagram of the cooling device in the automotive electrical accessories bench test device of the present application;

[0026] Figure 10 yes Figure 9 Schematic diagram of the structure of C shown.

[0027] Reference numerals: 10, test device for automotive electrical accessories bench; 11, mute device; 111, mute chamber; 1111, mute cavity; 1112, mute frame; 11121, mute column; 1113, mute layer; 11131, wave sound-absorbing layer; 11132, flat sound-absorbing layer; 11133, fixing layer; 11134, sealing ring; 1114, supporting layer; 112, sound pickup device; 1121, microphone sensor; 1122, microphone holder; 113, supporting base; 1131, first supporting portion; 1132, second supporting portion; 114. First adjustable member; 115. First fixing member; 1151. Latch member; 116. Second fixing member; 117. Elastic member; 12. Cooling device; 121. Cooling frame; 122. Fan member; 123. Evaporator; 124. Condenser; 1251. First air guide cover; 1252. Second air guide cover; 1253. Third air guide cover; 1254. Fourth air guide cover; 126. Rotating support assembly; 1261. Support bracket; 1262. Rotating bracket; 1263. Second adjustable member; 13. Compressor; 131. Piping assembly. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] The automotive electrical accessories test bench device provided by the present invention is described in detail below with reference to the embodiments.

[0031] See also Figure 1 、 Figure 2 as well as Figure 3 , Figure 1 This is a schematic diagram of the explosion of the mute device in the automotive electrical accessories bench test device of the present application; Figure 2 yes Figure 1 A schematic structural diagram shown; Figure 3It is a partial schematic diagram of the mute device in the automotive electrical accessories bench test device of the present application. The present application provides an automotive electrical accessories bench test device. The automotive electrical accessories bench test device 10 is used to test automotive electrical accessories. Automotive electrical accessories may be, but are not limited to, electronic water pumps (not shown in the figure), vacuum pumps (not shown in the figure), wiper motors (not shown in the figure), and compressors 13, etc. The automotive electrical accessories bench test device 10 includes a mute device 11. The mute device 11 includes a mute chamber 111 and a supporting layer 1114. The mute chamber 111 is formed with a mute cavity 1111. The mute cavity 1111 provides an installation location for subsequent automotive electrical accessories and a sound pickup device 112. The mute chamber 111 can provide a relatively quiet acoustic environment, so that the automotive electrical accessories bench test device 10 meets the acoustic environment requirements for noise test evaluation.

[0032] The support layer 1114 is located in the silent chamber 1111; at the same time, the support layer 1114 is connected to the silent chamber 111 in a liftable manner. The support layer 1114 can rise or fall in the silent chamber 1111, so that the height position of the support layer 1114 can be adjusted according to actual needs. The support layer 1114 is detachably connected to the automotive electrical accessories. The automotive electrical accessories can be connected to the support layer 1114; or, the automotive electrical accessories are disconnected from the support layer 1114. The automotive electrical accessories can be connected to the support layer 1114 by means of, but not limited to, snap-on, plug-in, and bolts. The sound pickup device 112 is provided on the support layer 1114. The sound pickup device 112 is used to pick up noise from the automotive electrical accessories. The sound pickup device 112 can be, but is not limited to, a microphone device (not shown in the figure).

[0033] The mute device 11, through the mute chamber 111, can provide a relatively quiet acoustic environment, enabling the automotive electrical accessory bench test apparatus 10 to meet the acoustic environment requirements for noise testing and evaluation. Furthermore, the support layer 1114 can be raised and lowered to the mute chamber 111, allowing the support layer 1114 to be positioned at different heights within the mute chamber 1111. This allows the automotive electrical accessory bench test apparatus 10 to accommodate different types and sizes of automotive electrical accessories, thereby increasing its versatility and reducing costs.

[0034] The microphone assembly may include a microphone sensor 1121 and a microphone holder 1122. The microphone sensor 1121 is mounted on the microphone holder 1122. The number of microphone assemblies may include, but is not limited to, one, two, three, or four or more. The near-field distance of the microphone assembly may include, but is not limited to, 0.1m, 0.3m, 0.5m, or 1m, thereby accommodating various types and sizes of automotive electrical accessories.

[0035] See also Figure 4 , Figure 4 yes Figure 3 Schematic diagram of the structure of B. Figures 1 to 3 In some embodiments, the silent chamber 111 includes a silent frame 1112. The silent frame 1112 may be, but is not limited to, a cube or a polyhedron. The silent device 11 includes a support seat 113 and a first adjustable member 114. The support layer 1114 is connected to the support seat 113. The support layer 1114 is detachable or fixedly connected to the support seat 113. The support seat 113 is sleeved on the silent frame 1112. The silent frame 1112 provides an installation position for the support seat 113. The support seat 113 is detachable or fixedly connected to the silent frame 1112. The support seat 113 is liftably abutted against the silent frame 1112 through the first adjustable member 114. That is, the first adjustable member 114 passes through the support seat 113 and is releasably abutted against the silent frame 1112.

[0036] When the height of the support layer 1114 needs to be adjusted, the first adjustable member 114 is first adjusted to release the contact with the silent frame 1112, the height of the support base 113 on the silent frame 1112 is then adjusted, and finally the height of the support layer 1114 within the silent chamber 111 is adjusted. After the height adjustment of the support layer 1114 is completed, the first adjustable member 114 is adjusted to contact the silent frame 1112, and the support layer 1114 is then positioned at a desired height within the silent chamber 111.

[0037] Through the cooperation of the above-mentioned silent frame 1112, support base 113 and first adjustable part 114, not only can the height of the support layer 1114 be adjusted and fixed, but the structure is simple and easy to operate, thereby being able to meet the noise and vibration tests of different types of automotive electrical accessories.

[0038] Specifically, the silent frame 1112 includes at least four silent columns 11121, four support seats 113, and at least four first adjustable members 114. Each silent column 11121 is provided with a support seat 113. Each support seat 113 is connected to the silent frame 1112 in a lifting manner via at least one first adjustable member 114. As in this embodiment, the silent frame 1112 includes four silent columns 11121 and eight first adjustable members 114. The first adjustable members 114 can be, but are not limited to, tightening bolts, etc.

[0039] In some embodiments, the outer periphery of the support base 113 is provided with a first support portion 1131 and a second support portion 1132 arranged opposite to each other. The first support portion 1131 is detachable or fixedly connected to the outer periphery of the support base 113. As in the present embodiment, the first support portion 1131 is integrally formed on the outer periphery of the support base 113. The second support portion 1132 is detachable or fixedly connected to the outer periphery of the support base 113. As in the present embodiment, the second support portion 1132 is integrally formed on the outer periphery of the support base 113. The first support portion 1131 and the second support portion 1132 can be arranged opposite to each other in an upper and lower direction.

[0040] The mute device 11 includes a first fixing member 115 and a second fixing member 116. The first fixing member 115 is inserted through and connected to the first support portion 1131. That is, the first fixing member 115 is detachably connected to the first support portion 1131. The second fixing member 116 is inserted through and connected to the second support portion 1132. That is, the second fixing member 116 is detachably connected to the second support portion 1132. The support layer 1114 is releasably locked between the first fixing member 115 and the second fixing member 116. The support layer 1114 can be locked between the first fixing member 115 and the second fixing member 116; alternatively, the support layer 1114 is unlocked from the first fixing member 115 and the second fixing member 116.

[0041] Through the cooperation between the above-mentioned first support part 1131, the second support part 1132, the first fixing member 115, the second fixing member 116 and the supporting layer 1114, not only can the supporting layer 1114 be rigidly connected, thereby meeting the rigid adjustment of the supporting layer 1114, but it also facilitates the installation and disassembly of the supporting layer 1114.

[0042] In this embodiment, the first fixing member 115 may be, but is not limited to, a first bolt (not shown). The second fixing member 116 may be, but is not limited to, a second bolt (not shown). The first bolt is provided with a latch 1151. Rotating the latch 1151 facilitates the installation of the first fixing member 115 on the second fixing member 116, thereby improving installation efficiency.

[0043] In some embodiments, the mute device 11 includes an elastic member 117. The elastic member 117 passes through the support layer 1114. The elastic member 117 is connected between the first support portion 1131 and the second support portion 1132. One end of the elastic member 117 is detachably or fixedly connected to the end of the first support portion 1131 facing the second support portion 1132. The other end of the elastic member 117 is detachably or fixedly connected to the end of the second support portion 1132 facing the first support portion 1131. In this embodiment, the two ends of the elastic member 117 are respectively fixedly connected between the first support portion 1131 and the second support portion 1132.

[0044] The elastic member 117, the first support portion 1131, the second support portion 1132, and the support layer 1114 cooperate to not only enable the support layer 1114 to be flexibly connected, thereby satisfying the flexibility adjustment of the support layer 1114, but also meeting the requirements of noise and vibration performance testing, etc. The elastic member 117 can be, but is not limited to, a spring.

[0045] The first fixing member 115, the second fixing member 116, and the elastic member 117 cooperate with the support base 113 to achieve both rigid and flexible support and constraint for the support layer 1114. When the first fixing member 115 and the second fixing member 116 are locked, the support layer 1114 is fully rigidly constrained. When the first fixing member 115 and the second fixing member 116 are loosened or removed, the support layer 1114 is flexibly constrained by the elastic member 117. This means that the support layer 1114 is highly adjustable, both in terms of rigidity and flexibility, and can meet the measurement point distance requirements of different test specifications and other similar automotive electrical accessory noise and vibration tests.

[0046] See also Figure 5 , Figure 5 This is a schematic diagram of the explosion of the silent layer in the test device for the automotive electrical accessories of this application. Figures 1 to 4 In some embodiments, the silent chamber 111 includes a silent layer 1113. The silent layer 1113 is disposed on the silent frame 1112. The silent cavity 1111 is formed between the silent layer 1113 and the silent frame 1112. The silent cavity 1111 can provide a relatively quiet acoustic environment. The silent layer 1113 includes a wave sound absorbing layer 11131, a flat sound absorbing layer 11132, and a fixed layer 11133. The wave sound absorbing layer 11131, the flat sound absorbing layer 11132, and the fixed layer 11133 are disposed sequentially outward from the silent cavity 1111. The wave sound absorbing layer 11131 is located on the inner side wall of the silent cavity 1111. At least a portion of a sealing ring 11134 is provided around the wave sound absorbing layer 11131, the flat sound absorbing layer 11132, and the fixed layer 11133. Among them, the sealing ring 11134 can be partially or completely mounted on the outer periphery of the wave sound absorbing layer 11131, the plane sound absorbing layer 11132 and the fixed layer 11133.

[0047] Both the wave-shaped sound-absorbing layer 11131 and the flat sound-absorbing layer 11132 have sound-absorbing properties. The wave-shaped sound-absorbing layer 11131 is configured in a wave shape, causing sound waves to repeatedly reflect and refract on its surface, effectively absorbing and dissipating the sound waves. The flat sound-absorbing layer 11132 is configured in a planar shape, absorbing and dissipating some sound waves. The fixing layer 11133 not only provides a mounting location for the flat sound-absorbing layer 11132 and the wave-shaped sound-absorbing layer 11131, but also enhances the overall strength of the silent layer 1113. The wave-shaped sound-absorbing layer 11131 can be, but is not limited to, one, two, or three layers. The flat sound-absorbing layer 11132 can be, but is not limited to, one, two, or three layers. In this embodiment, both the wave-shaped sound-absorbing layer 11131 and the flat sound-absorbing layer 11132 are one layer.

[0048] The above-mentioned silent layer 1113 includes a wave sound absorbing layer 11131, a plane sound absorbing layer 11132 and a fixed layer 11133 in sequence from the silent cavity 1111 to the outside, so as to effectively absorb and dissipate sound waves and improve noise reduction performance.

[0049] In some embodiments, the silent frame 1112 is arranged in a square shape. For example, the silent frame 1112 has at least six sides. Each side of the square shape is provided with a silent layer 1113. That is, each of the six sides of the square shape is provided with a silent layer 1113, and the number of silent layers 1113 is six.

[0050] At least one silent layer 1113 is openably and closably connected to the silent frame 1112. The silent layer 1113 can be open relative to the silent frame 1112; alternatively, the silent layer 1113 can be closed relative to the silent frame 1112. At least one of the six silent layers 1113 is openably and closably connected to the silent frame 1112. In this embodiment, one silent layer 1113 is openably and closably connected to the silent frame 1112.

[0051] By providing a quiet layer 1113 on each side of the square body, the mute device 11 achieves a relatively quiet acoustic environment, thereby meeting the requirements for noise and vibration testing. Furthermore, at least one quiet layer 1113 can be openably and closably connected to the mute frame 1112, facilitating the installation and placement of automotive electrical accessories and the sound pickup device 112.

[0052] See also Figure 6 , Figure 6 This is a structural diagram of an embodiment of the automotive electrical accessories bench test device of the present application. Figures 1 to 5In some embodiments, the automotive electrical accessory includes a compressor 13. The compressor 13 can be an air-conditioning compressor, etc. The automotive electrical accessory bench test device 10 includes a cooling device 12. The cooling device 12 is located on the periphery of the mute device 11. The compressor 13 is connected to the cooling device 12 through a pipe assembly 131. The above-mentioned mute device 11 and cooling device 12 are two independent structures, which are placed in isolation from each other. The cooling device 12 can be placed away from the compressor 13 to reduce the influence of background noise sources. The mute device 11 isolates the compressor 13, so that the near field of the compressor 13 obtains a relatively quiet acoustic environment.

[0053] Therefore, through the cooperation of the cooling device 12 and the silencing device 11, not only the noise and vibration test evaluation conditions of the air-conditioning compressor 13 alone are achieved, but also the structure is simple, and the manufacturing cost is reduced.

[0054] See also Figure 7 、 Figure 8 as well as Figure 9 , Figure 7 This is a schematic diagram of the structure of the cooling device in the automotive electrical accessories bench test device of the present application; Figure 8 This is a first partial schematic diagram of the cooling device in the automotive electrical accessories bench test device of the present application; Figure 9 This is the second partial schematic diagram of the cooling device in the automotive electrical accessories bench test device of the present application. Figures 1 to 6 In some embodiments, the cooling device 12 includes a cooling frame 121, a fan member 122, an evaporator 123, and a condenser 124. The cooling frame 121 provides an installation location for the fan member 122, the evaporator 123, and the condenser 124. The fan member 122, the evaporator 123, and the condenser 124 are connected to the cooling frame 121. The fan member 122, the evaporator 123, and the condenser 124 are detachably or fixedly connected to the cooling frame 121. As in this embodiment, the fan member 122, the evaporator 123, and the condenser 124 are detachably connected to the cooling frame 121. The evaporator 123 is arranged between the fan member 122 and the condenser 124. The compressor 13 is connected to the evaporator 123 through the pipe assembly 131.

[0055] By setting the evaporator 123 between the fan component 122 and the condenser 124, the compressor 13 is connected to the evaporator 123 through the pipe assembly 131, which not only realizes the heat dissipation and cooling of the compressor 13, but also improves the heat dissipation and cooling efficiency, and also reduces the size of the cooling device 12, making the structure more compact.

[0056] The evaporator 123 reduces the temperature of the airflow generated by the fan 122. When the low-temperature airflow then flows through the condenser 124, the cooling efficiency of the high-temperature refrigerant of the air conditioner within the condenser 124 is improved, and the blower component is eliminated, thereby achieving comprehensive utilization of the cooling and heating efficiency of the evaporator 123 and condenser 124. It should be noted that the operating principles of heat dissipation and cooling between the fan 122, evaporator 123, condenser 124, and compressor 13 are generally known to those skilled in the art and will not be elaborated on here.

[0057] In some embodiments, the fan member 122, the evaporator 123, and the condenser 124 are arranged along a first direction. The first direction may be, but is not limited to, a front-to-back direction. A first air duct 1251 is provided between the fan member 122 and the cooling frame 121. The first air duct 1251 can serve as an air guide, for directing more air from the external environment into the fan member 122 through the first air duct 1251, thereby increasing airflow and thereby improving heat dissipation efficiency. The first air duct 1251 can be detachably or fixedly connected between the fan member 122 and the cooling frame 121.

[0058] Alternatively, a second air scoop 1252 may be provided between the fan element 122 and the evaporator 123. The second air scoop 1252 can guide airflow, thereby directing the airflow from the fan element 122 into the second air scoop 1252, increasing airflow and thereby improving heat dissipation efficiency. When the cooling device 12 includes the first air scoop 1251, airflow from the first air scoop 1251 and the fan element 122 can be directed into the second air scoop 1252. The second air scoop 1252 may be detachably or fixedly connected between the fan element 122 and the evaporator 123.

[0059] Alternatively, a third air scoop 1253 may be provided between the evaporator 123 and the condenser 124. The third air scoop 1253 can guide airflow, thereby facilitating the flow of air from the evaporator 123 into the third air scoop 1253, increasing airflow velocity and thereby improving heat dissipation efficiency. When the cooling device 12 includes the second air scoop 1252, this further facilitates the flow of air from the second air scoop 1252 and the evaporator 123 into the third air scoop 1253. The third air scoop 1253 may be detachably or fixedly connected between the evaporator 123 and the condenser 124.

[0060] And / or, a fourth air guide hood 1254 is provided between the condenser 124 and the cooling frame 121. The fourth air guide hood 1254 can guide the air, thereby facilitating the airflow of the condenser 124 into the fourth air guide hood 1254, increasing the airflow speed, and thus improving the heat dissipation efficiency.

[0061] The fan element 122, the evaporator 123, the condenser 124, the first air guide 1251, and / or the second air guide 1252, and / or the third air guide 1253, and / or the fourth air guide 1254 cooperate to increase air flow, thereby improving heat dissipation efficiency. The fan element 122 can be, but is not limited to, a fan.

[0062] When the cooling device 12 includes the first air scoop 1251, the second air scoop 1252, the third air scoop 1253, and the fourth air scoop 1254, the centers of the first air scoop 1251, the second air scoop 1252, the third air scoop 1253, and the fourth air scoop 1254 are all arranged to extend along the first direction. From the first air scoop 1251 to the fourth air scoop 1254, the cross-sectional areas of the first air scoop 1251 and the second air scoop 1252 along the first direction gradually decrease, while the cross-sectional areas of the third air scoop 1253 and the fourth air scoop 1254 along the first direction gradually increase.

[0063] See also Figure 10 , Figure 10 yes Figure 9 Schematic diagram of the structure of C. Figures 1 to 9 In some embodiments, the cooling device 12 includes a rotating support assembly 126. The fan 122 and / or the condenser 124 are connected to the cooling frame 121 via the rotating support assembly 126. The fan 122, or the condenser 124, or both the fan 122 and the condenser 124 are connected to the cooling frame 121 via a plurality of rotating brackets 1262, so that the position of the fan 122 and / or the condenser 124 can be freely adjusted in a certain space.

[0064] The rotating support assembly 126 includes a support bracket 1261 and a rotating bracket 1262. One end of the support bracket 1261 is connected to the cooling frame 121. One end of the support bracket 1261 is detachably or fixedly connected to the cooling frame 121. One end of the rotating bracket 1262 is rotatably connected to the other end of the support bracket 1261 via a second adjustable member 1263. One end of the second adjustable member 1263 and the other end of the support bracket 1261 rotate relative to each other. The second adjustable member 1263 may be, but is not limited to, an adjusting screw. The other end of the rotating bracket 1262 is connected to the fan member 122 and / or the condenser 124. The other end of the rotating bracket 1262 is detachably or fixedly connected to the fan member 122 and / or the condenser 124. In this embodiment, the other end of the rotating bracket 1262 is connected to the fan member 122 and the condenser 124 via bolts or other means.

[0065] By cooperating with the support bracket 1261 and the rotating bracket 1262 in the rotating support assembly 126 and the cooling frame 121, the fan member 122 and / or the condenser 124, etc. respectively, the position can be freely adjusted in a certain space.

[0066] In this embodiment, the fan 122 is connected to the cooling frame 121 via four rotating support assemblies 126. The condenser 124 is connected to the cooling frame 121 via four rotating bracket assemblies 1262. The evaporator 123 is connected to the cooling frame 121 via an L-shaped bracket (not shown).

[0067] The materials of the above-mentioned silent frame 1112, silent column 11121, support layer 1114, fixed layer 11133, cooling frame 121, support bracket 1261, rotating bracket 1262, etc. can be determined according to actual needs and are not limited here.

[0068] The terms "first", "second" and "third" in this application are only used for descriptive purposes and should not be understood as indicating the number of the indicated technical features. Thus, the features defined as "first", "second" and "third" can explicitly or implicitly include at least one of these features. In the embodiments of the present application, all directional indications (such as up, down, left, right, front, back ...) are only used to explain the relative positional relationship, movement, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes other steps or units inherent to these processes, methods, products or devices.

[0069] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A test bench device for automobile electrical accessories, used for testing the automobile electrical accessories, characterized in that: A mute device is included, the mute device comprising: A silent chamber is formed with a silent cavity; A support layer is located in the silent cavity and is connected to the silent chamber in a liftable manner, and the support layer is detachably connected to the automotive electrical accessories; The sound pickup device is arranged on the supporting layer and is used for picking up noise from automobile electrical accessories.

2. The automotive electrical accessories bench test device according to claim 1, characterized in that: The silent chamber includes a silent frame, the silent device includes a support seat and a first adjustable part, the support layer is connected to the support seat, the support seat is sleeved on the silent frame, and the support seat is lifted and abutted against the silent frame through the first adjustable part.

3. The automotive electrical accessories bench test device according to claim 2, characterized in that: The outer periphery of the support seat is provided with a first supporting part and a second supporting part which are arranged opposite to each other. The mute device includes a first fixing part and a second fixing part. The first fixing part is passed through and connected to the first supporting part; the second fixing part is passed through and connected to the second supporting part. The support layer can be releasably locked between the first fixing part and the second fixing part.

4. The automotive electrical accessories bench test device according to claim 3, characterized in that: The mute device includes an elastic member, which passes through the supporting layer and is connected between the first supporting portion and the second supporting portion.

5. The automotive electrical accessories bench test device according to claim 2, characterized in that: The silent chamber includes a silent layer, and the silent layer is arranged on the silent frame; The silent layer includes a wave sound absorbing layer, a plane sound absorbing layer and a fixed layer in sequence from the silent cavity outward, and the outer peripheries of the wave sound absorbing layer, the plane sound absorbing layer and the fixed layer are sheathed with at least a partial sealing ring.

6. The automotive electrical accessories bench test device according to claim 5, characterized in that: The silent frame is arranged in a square shape, and each side surface of the square body is provided with the silent layer. At least one of the silent layers can be connected to the silent frame in an openable and closable manner.

7. The automotive electrical accessories bench test device according to any one of claims 1 to 6, characterized in that: The automobile electrical accessory includes a compressor, and the automobile electrical accessory bench test device includes a cooling device. The cooling device is located on the periphery of the mute device, and the compressor is connected to the cooling device through a pipeline assembly.

8. The automotive electrical accessories bench test device according to claim 7, characterized in that: The cooling device includes a cooling frame, a fan component connected to the cooling frame, an evaporator, and a condenser. The evaporator is arranged between the fan component and the condenser. The compressor is connected to the evaporator through the pipeline assembly.

9. The automotive electrical accessories bench test device according to claim 8, characterized in that: The fan part, the evaporator and the condenser are arranged in a first direction, and a first air guide cover is provided between the fan part and the cooling frame; and / or, a second air guide cover is provided between the fan part and the evaporator; and / or, a third air guide cover is provided between the evaporator and the condenser; and / or, a fourth air guide cover is provided between the condenser and the cooling frame.

10. The automotive electrical accessories bench test device according to claim 8, characterized in that: The cooling device comprises a rotating support assembly, and the fan member and / or the condenser are connected to the cooling frame via the rotating support assembly; The rotating support assembly includes a supporting bracket and a rotating bracket, one end of the supporting bracket is connected to the cooling frame, one end of the rotating bracket is rotatably connected to the other end of the supporting bracket through a second adjustable member, and the other end of the rotating bracket is connected to the fan member and / or the condenser.

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