A sound absorbing box

Abstract

The utility model discloses a sound attenuation box, including box, support rod and bolt, the box outside is equipped with guide hole and two lock blocks, the guide hole is connected with the inside of box, and two lock blocks are located opposite two sides of guide hole, support rod is slidably installed in guide hole along its axial direction, and one end of support rod is located in the box and is installed with the pickup, and the other end of support rod is exposed outside the box, support rod is equipped with a plurality of lock holes along its length direction distribution, the bolt is inserted in two lock blocks and is penetrated one of lock holes, and the axial adjustment whole process of support rod drive pickup can be completed outside the closed box, need not to dismouting the box lid or the operation of stretching into the box, has eliminated the defect that the process interruption, the seal damage and the low adjustment efficiency caused by must open the box to move support rod, has kept the sound insulation performance of the box intact simultaneously.

Description

Technical Field

[0001] This utility model relates to the technical field of electroacoustic device testing equipment, and in particular to a silencer box. Background Technology

[0002] Existing miniature loudspeaker testing silencers typically use a structure where the microphone is fixed by a support rod inside the enclosure. When it is necessary to adjust the distance between the microphone and the loudspeaker under test, the enclosure must be disassembled or opened before the support rod can be operated, which results in low adjustment efficiency. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a silencer box with high adjustment efficiency.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: a silencer box, comprising... The enclosure has a guide hole and two locking blocks on the outside. The guide hole connects to the interior of the enclosure, and the two locking blocks are located on opposite sides of the guide hole. A support rod is slidably installed in the guide hole along its axial direction. One end of the support rod is located inside the housing and a microphone is installed thereon, while the other end of the support rod protrudes outside the housing. The support rod is provided with a plurality of locking holes distributed along its length. A latch is inserted into both of the lock blocks and passes through one of the lock holes.

[0005] Furthermore, the support rod is also provided with multiple scale markings, each of which corresponds to a lock hole.

[0006] Furthermore, the scale markings are formed in the scale grooves of the support rod.

[0007] Furthermore, the graduated grooves are filled with fluorescent adhesive.

[0008] Furthermore, the support rod has wire-passing holes that extend along its length and pass through both ends.

[0009] Furthermore, the microphone is detachably mounted on the support rod.

[0010] Furthermore, a damping element that abuts against the support rod is provided inside the guide hole.

[0011] Furthermore, it also includes an operating handle, which is connected to one end of the support rod that is exposed outside the housing.

[0012] Furthermore, the operating handle is detachably mounted on the support rod.

[0013] Furthermore, the locking block is provided with a first magnetic attraction member on the side opposite to the guide hole, and the pin is provided with a second magnetic attraction member, and the first magnetic attraction member and the second magnetic attraction member are magnetically attracted to each other.

[0014] The beneficial effects of this utility model are as follows: The silencer box provided by this utility model has a guide hole and a pair of locking blocks on the outside of the box, and a pin passes through the locking block and the locking hole of the support rod to form an external positioning mechanism. This allows the axial adjustment of the microphone driven by the support rod to be completed entirely outside the sealed box without disassembling the box cover or reaching into the box. This eliminates the defects of process interruption, seal damage and low adjustment efficiency caused by having to open the box to move the support rod, while maintaining the good acoustic isolation performance of the box. Attached Figure Description

[0015] Figure 1 This is an assembly drawing of the silencer box according to Embodiment 1 of this utility model; Figure 2 This is an exploded view of the silencer box according to Embodiment 1 of this utility model; Figure 3 This is a schematic cross-sectional view of the silencer box according to Embodiment 1 of this utility model; Figure 4 This is a schematic diagram of another cross-sectional structure of the silencer box according to Embodiment 1 of this utility model; Figure 5 This is a cross-sectional structural diagram of the silencer box according to Embodiment 2 of this utility model; Figure 6 This is an assembly drawing of the silencer box according to Embodiment 3 of this utility model; Figure 7 This is a cross-sectional structural diagram of the silencer box in Embodiment 4 of this utility model.

[0016] Label Explanation: 1. Housing; 11. Guide hole; 12. Locking block; 121. First magnetic chuck; 13. Damping component; 2. Support rod; 21. Lock hole; 22. Scale marking; 23. Wire hole; 3. Pin; 31. Second magnetic chuck; 4. Microphone; 5. Operating handle. Detailed Implementation

[0017] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0018] Please refer to Figure 1 , Figure 2 and Figure 3A silencer box includes a box body 1, a support rod 2, and a pin 3. The box body 1 has a guide hole 11 and two locking blocks 12 on its exterior. The guide hole 11 connects to the interior of the box body 1, and the two locking blocks 12 are located on opposite sides of the guide hole 11. The support rod 2 is slidably installed in the guide hole 11 along its axial direction. One end of the support rod 2 is located inside the box body 1 and a microphone 4 is installed thereon. The other end of the support rod 2 is exposed outside the box body 1. The support rod 2 has a plurality of locking holes 21 distributed along its length. The pin 3 is inserted into two of the locking blocks 12 and passes through one of the locking holes 21.

[0019] As can be seen from the above description, the beneficial effects of this utility model are as follows: by setting guide holes 11 and a pair of locking blocks 12 on the outside of the enclosure 1, and using a pin 3 to pass through the locking blocks 12 and the locking hole 21 of the support rod 2 to form an external positioning mechanism, the axial adjustment of the microphone 4 driven by the support rod 2 can be completed entirely outside the sealed enclosure 1 without disassembling the enclosure cover or reaching into the enclosure to operate. This eliminates the defects of process interruption, seal damage and low adjustment efficiency caused by having to open the enclosure 1 to move the support rod 2, while maintaining the acoustic isolation performance of the enclosure 1 intact.

[0020] Please refer to Figure 2 Furthermore, the support rod 2 is also provided with multiple scale markings 22, which correspond one-to-one with the lock hole 21.

[0021] As described above, the scale markings 22 correspond one-to-one with the keyholes 21. Pulling the support rod 2 allows for a direct confirmation of the microphone 4's position, eliminating the need for additional measurement steps.

[0022] Furthermore, the scale mark 22 is a scale groove formed on the support rod 2.

[0023] As described above, the scale markings 22 are directly formed on the support rod 2 in the form of scale grooves, which are resistant to wiping and not easy to peel off, and maintain clear identification over a long period of time.

[0024] Furthermore, the graduated grooves are filled with fluorescent adhesive.

[0025] As described above, the fluorescent adhesive fills the graduation grooves, and the graduation mark 22 is still visible in low light conditions, meeting the requirements for dark line work.

[0026] Please refer to Figure 3 Furthermore, the support rod 2 has a wire hole 23 extending along its length and passing through both ends.

[0027] As described above, the cable is concealed within the through hole 23 and slides with the rod without being exposed, thus eliminating noise and sealing gaps caused by cable swaying.

[0028] Please refer to Figure 2Furthermore, the microphone 4 is detachably mounted on the support rod 2.

[0029] As described above, the microphone 4 is detachably connected to the support rod 2. When the microphone 4 is maintained or the model is changed, it is not necessary to remove the entire support rod 2, which ensures that the sound-absorbing layer inside the enclosure 1 remains intact.

[0030] Please refer to Figure 5 Furthermore, the guide hole 11 is provided with a damping element 13 that abuts against the support rod 2.

[0031] As described above, the damping element 13 provides constant friction within the guide hole 11, preventing the support rod 2 from sliding easily and assisting in sealing.

[0032] Please refer to Figure 6 Furthermore, it also includes an operating handle 5, which is connected to the end of the support rod 2 that is exposed outside the housing 1.

[0033] As can be seen from the above description, the operating handle 5 increases the force application radius, allowing the support rod 2 to be pushed and pulled smoothly with one hand.

[0034] Furthermore, the operating handle 5 is detachably mounted on the support rod 2.

[0035] As described above, the operating handle 5 and the support rod 2 are detachable. They can be removed during transportation to reduce the overall height, and can be replaced separately if damaged.

[0036] Please refer to Figure 7 Furthermore, the locking block 12 is provided with a first magnetic attracting member 121 on the side opposite to the guide hole 11, and the pin 3 is provided with a second magnetic attracting member 31. The first magnetic attracting member 121 and the second magnetic attracting member 31 are magnetically attracted to each other.

[0037] As described above, the first magnetic clasp 121 and the second magnetic clasp 31 magnetically engage, causing the pin 3 to automatically adhere to the locking block 12, resisting vibration and loosening, and providing a positioning indication to ensure a secure lock.

[0038] Embodiment 1 of this utility model is as follows: Please refer to Figure 1 A soundproof enclosure suitable for sealed soundproofing scenarios where miniature loudspeakers undergo high-frequency acoustic performance testing on mass production lines, especially suitable for automated testing stations with stringent requirements for testing accuracy and sealing integrity and where the tested model needs to be frequently changed.

[0039] For specific details, please refer to... Figure 2 , Figure 3 and Figure 4The silencer box includes a housing 1, a support rod 2, and a pin 3. The housing 1 has a guide hole 11 and two locking blocks 12 on its exterior. The guide hole 11 connects to the interior of the housing 1, and the two locking blocks 12 are located on opposite sides of the guide hole 11. The support rod 2 is slidably mounted in the guide hole 11 along its axial direction. One end of the support rod 2 is located inside the housing 1 and has a microphone 4 mounted thereon, while the other end of the support rod 2 protrudes outside the housing 1. The support rod 2 has multiple locking holes 21 distributed along its length. The pin 3 is inserted into two of the locking blocks 12 and passes through one of the locking holes 21. When it is necessary to adjust the position of the microphone 4 inside the housing 1, the pin 3 is inserted into the support rod 2. Pull out of one lock hole 21, then push / pull the support rod 2 so that the support rod 2 slides along its axis and aligns the other lock hole 21 with the pin 3. Finally, insert the pin 3 into the lock hole 21 to achieve adjustment. By setting guide holes 11 and a pair of locking blocks 12 on the outside of the enclosure 1, and forming an external positioning mechanism with the pin 3 passing laterally through the locking block 12 and the lock hole 21 of the support rod 2, the axial adjustment of the support rod 2 and the microphone 4 can be completed entirely outside the sealed enclosure 1 without disassembling the enclosure cover or reaching into the enclosure. This eliminates the defects of process interruption, seal damage and low adjustment efficiency caused by having to open the enclosure 1 to move the support rod 2, while maintaining the acoustic isolation performance of the enclosure 1.

[0040] Optionally, the connection method between the microphone 4 and the support rod 2 can be configured according to actual application requirements. Specifically, in this embodiment, the microphone 4 is detachably installed on the support rod 2, and the microphone 4 and the support rod 2 are detachably connected. When maintaining or changing the model of the microphone 4, it is not necessary to remove the entire support rod 2, ensuring that the sound-absorbing layer inside the enclosure 1 remains intact. The detachable connection method includes, but is not limited to, screw connection, snap-fit ​​connection, magnetic connection, or adhesive connection. Of course, in some other embodiments, the microphone 4 may also be fixed to the support rod 2.

[0041] In this embodiment, the distance between two adjacent keyholes 21 on the support rod 2 is not fixed, and the position of each keyhole 21 corresponds to a specific test distance; thus, during the test, the operator can quickly lock the target keyhole 21 according to the specific model of the speaker under test, thereby making rapid adjustments.

[0042] It should be noted that in the actual testing process, the speaker to be tested is mounted on a test fixture, which is equipped with a sound output channel that simulates the installation environment of a miniature speaker. By mounting the test fixture on the enclosure 1 and connecting the sound output channel with the interior of the enclosure 1, the miniature speaker is activated, and the sound from the miniature speaker is collected by the pickup 4.

[0043] Please refer to Figure 2 The support rod 2 is also provided with multiple scale marks 22, which correspond one-to-one with the lock holes 21. Pulling the support rod 2 allows for direct confirmation of the microphone 4 position, eliminating the need for additional measurement steps. Specifically, in this embodiment, the scale marks 22 are scale grooves formed on the support rod 2. The scale marks 22 are directly formed on the support rod 2 in the form of scale grooves, making them resistant to wiping and not easy to peel off, maintaining clear identification over a long period of time. Optionally, fluorescent adhesive can also be filled into the scale grooves, so that the scale marks 22 are still visible in low-light environments, meeting the needs of dark line operations.

[0044] In other embodiments, the scale marking 22 may be a scale sticker directly attached to the support rod 2, or the scale marking 22 may be a marking coating applied to the support rod 2; the specific settings can be made according to actual application requirements, and will not be elaborated here.

[0045] Please refer to Figure 3 The support rod 2 has a cable passage hole 23 extending along its length and passing through both ends. The cable passage hole 23 is used for the cable to pass through. The cable is hidden in the through cable passage hole 23 and slides with the rod without being exposed, eliminating the noise and sealing gaps caused by the cable swing.

[0046] Please refer to Figure 5 The second embodiment of this utility model is a further improvement on the first embodiment. In this second embodiment, a damping element 13 is provided in the guide hole 11 to abut against the support rod 2. The damping element 13 provides constant friction in the guide hole 11 to prevent the support rod 2 from sliding easily and to assist in sealing. Specifically, the damping element 13 is annular and sleeved on the outer wall of the support rod 2.

[0047] Please refer to Figure 6 Embodiment 3 of this utility model is a further improvement based on Embodiment 1. In Embodiment 3, it further includes an operating handle 5, which is connected to the end of the support rod 2 exposed outside the housing 1. It is easy to understand that the operating handle 5 increases the force application radius, allowing for smooth pushing and pulling of the support rod 2 with one hand. Specifically, the operating handle 5 is detachably installed on the support rod 2. The operating handle 5 and the support rod 2 are detachable, allowing for removal during transportation to reduce the overall height, and replacement separately if damaged. More specifically, in this embodiment, the operating handle 5 is installed on the support rod 2 via a threaded connection.

[0048] Please refer to Figure 7Embodiment 4 of this utility model is a further improvement based on Embodiment 1. In this embodiment 4: the locking block 12 is provided with a first magnetic suction member 121 on the side opposite to the guide hole 11, and the pin 3 is provided with a second magnetic suction member 31. The first magnetic suction member 121 and the second magnetic suction member 31 are magnetically attracted to each other; so that the pin 3 automatically fits into the locking block 12, resists vibration and loosening, and provides a positioning prompt, ensuring that the locking is stable; specifically, both the first magnetic suction member 121 and the second magnetic suction member 31 are magnets.

[0049] In summary, the silencing box provided by this utility model has a guide hole and a pair of locking blocks on the outside of the box, and a pin passes through the locking block and the locking hole of the support rod to form an external positioning mechanism. This allows the axial adjustment of the microphone driven by the support rod to be completed entirely outside the sealed box without disassembling the box cover or reaching into the box. This eliminates the defects of process interruption, seal damage and low adjustment efficiency caused by having to open the box to move the support rod, while maintaining the acoustic isolation performance of the box.

[0050] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A silencer box, characterized in that, include The enclosure has a guide hole and two locking blocks on the outside. The guide hole connects to the interior of the enclosure, and the two locking blocks are located on opposite sides of the guide hole. A support rod is slidably mounted in the guide hole along its axial direction. One end of the support rod is located inside the housing and a microphone is installed thereon, while the other end of the support rod protrudes outside the housing. The support rod is provided with a plurality of locking holes distributed along its length. A latch is inserted into both of the lock blocks and passes through one of the lock holes.

2. The silencer box according to claim 1, characterized in that, The support rod is also provided with multiple scale markings, each of which corresponds to a lock hole.

3. The silencer box according to claim 2, characterized in that, The scale markings are formed in the scale grooves of the support rod.

4. The silencer box according to claim 3, characterized in that, The graduated grooves are filled with fluorescent adhesive.

5. The silencer box according to claim 1, characterized in that, The support rod has wire-passing holes that extend along its length and pass through both ends.

6. The silencer box according to claim 1, characterized in that, The microphone is detachably mounted on the support rod.

7. The silencer box according to claim 1, characterized in that, The guide hole is provided with a damping element that abuts against the support rod.

8. The silencer box according to claim 1, characterized in that, It also includes an operating handle, which is connected to one end of the support rod that is exposed outside the housing.

9. The silencer box according to claim 8, characterized in that, The operating handle is detachably mounted on the support rod.

10. The silencer according to claim 1, characterized in that, The locking block has a first magnetic attraction on the side opposite to the guide hole, and the pin has a second magnetic attraction, with the first magnetic attraction and the second magnetic attraction magnetically engaging.

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