Clamp assembly and loudspeaker diaphragm characteristic detection device

Abstract

The application discloses a clamp assembly and a loudspeaker diaphragm characteristic detection device, wherein the clamp assembly is used for fixing a target element on a vibration device, the vibration device is used for generating mechanical vibration, and the clamp assembly comprises a connecting piece fixedly connected to the vibration device and a locking piece detachably connected to the connecting piece; the connecting piece and the locking piece are matched to clamp the target element; and the mechanical vibration generated by the vibration device is transmitted to the target element through the connecting piece and the locking piece. The clamp assembly and the loudspeaker diaphragm characteristic detection device provided by the technical scheme of the application can replace different diaphragms through the clamp assembly to improve detection efficiency, improve quality, and reduce unnecessary economic losses.

Description

Technical Field

[0001] This invention relates to the field of loudspeaker testing equipment technology, and in particular to a clamp assembly and a device for testing loudspeaker diaphragm characteristics. Background Technology

[0002] The diaphragm (diaphragm / cone) is the core component of a loudspeaker, significantly impacting sound quality and bass response. However, currently, it's not immediately apparent whether the diaphragm produced by suppliers meets customer requirements. The performance can only be assessed after the speaker is manufactured and delivered to the customer. This current operating model necessitates large-scale inventory preparation and carries the risk of returns, resulting in substantial financial losses. Summary of the Invention

[0003] The main objective of this invention is to provide a loudspeaker diaphragm characteristic testing device, which aims to solve the technical problem that current diaphragm testing requires the loudspeaker to be manufactured before its quality can be determined, requiring diaphragm manufacturers to stock up in large quantities and bear the risk of returns, resulting in economic losses.

[0004] To achieve the above objectives, the present invention provides a clamping assembly for fixing a target element to a vibration device, the vibration device being used to generate mechanical vibration, the clamping assembly comprising:

[0005] Connecting component, fixedly connected to the vibration device;

[0006] A locking element is detachably connected to the connecting element. The connecting element and the locking element cooperate to clamp the target element. The mechanical vibration generated by the vibration device is transmitted to the target element through the connecting element and the locking element.

[0007] Optionally, the vibration device is provided with a connection hole, and the connector includes a first connector and a second connector;

[0008] The first connector is fixedly sleeved on the outer peripheral surface of the vibration device, the second connector is fixedly connected to the side wall of the connecting hole, and the locking member is connected to the second connector.

[0009] Optionally, the target element has a central hole and is sleeved onto the vibration device through the central hole. A channel is formed between the first connector and the locking member. The target element extends away from the vibration device through the channel. The locking member moves toward the first connector to reduce the channel and clamp the target element.

[0010] Optionally, the second connector has a first through hole, a connecting groove is formed on the side wall of the first through hole, and the locking member has a protrusion that engages with the connecting groove.

[0011] Optionally, the connecting groove is threadedly connected to the protruding protrusion; or,

[0012] The connecting groove engages with the protrusion.

[0013] Optionally, the locking member has a connecting portion and an abutting portion, and a receiving groove is formed between the connecting portion and the abutting portion. The receiving groove is used to receive the second connecting member. The connecting portion is connected to the second connecting member, and the abutting portion cooperates with the first connecting member to clamp the target element.

[0014] The present invention also proposes a loudspeaker diaphragm characteristic detection device for detecting the characteristics of the diaphragm, comprising a vibration device and a clamp assembly as described above, wherein the clamp assembly is connected to the vibration device and the diaphragm respectively, and the vibration device is used to generate mechanical vibration.

[0015] Optionally, the detection device further includes a T-iron, the vibration device includes a voice coil, the voice coil is sleeved on the T-iron, and the T-iron is also sleeved with a magnet and a washer. The magnet and the washer are respectively provided with through holes, and the two are sleeved on the T-iron through the through holes. A frame is connected to the side of the washer away from the magnet. The frame is also sleeved on the outside of the voice coil. The voice coil is also sleeved with a spring. The spring is located on the side of the frame away from the washer. The clamp assembly is connected to the voice coil.

[0016] Optionally, the voice coil is also connected to a terminal, which is fixed to the frame and connected to a frequency response testing system.

[0017] Optionally, the testing device further includes a test chamber, which contains a microphone connected to the frequency response testing system.

[0018] This invention employs a clamp assembly to fix a target component to a vibration device, and transmits the mechanical vibration generated by the vibration device to the target component for testing. This allows for direct testing of the target component's characteristics at the production end, enabling timely and accurate assessment, thereby improving quality, reducing unnecessary economic losses, promptly identifying quality issues, eliminating quality risks, shortening production cycles, and enhancing enterprise competitiveness. Specifically, the clamp assembly's connector is fixed to the vibration device, and the target component is clamped by the cooperation of the locking component and the connector. The connector and locking component also transmit the mechanical vibration generated by the vibration device to the target component, causing it to vibrate and allowing for the detection of its characteristics. Furthermore, the connector and locking component are detachably connected, allowing for the removal of the target component from the vibration device. This enables the replacement of different target components for testing by tightening and loosening the locking component and connector. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is an exploded structural diagram of an embodiment of the clamping assembly of the present invention;

[0021] Figure 2 This is a schematic diagram of the clamping state of an embodiment of the clamping assembly of the present invention;

[0022] Figure 3 This is a schematic diagram of an embodiment of the loudspeaker diaphragm characteristic detection device of the present invention;

[0023] Figure 4 This is a partial exploded view of an embodiment of the loudspeaker diaphragm characteristic detection device of the present invention;

[0024] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point A in the middle.

[0025] Explanation of icon numbers:

[0026] 100 Fixture assembly 200 Vibration device 110 First connector 300 diaphragm 120 Second connector 400 T-Iron 121 First through hole 410 magnet 122 Connecting slot 420 Wasi 130 Locking parts 430 Sink stand 131 protrusion 440 Spiral 132 Connection part 500 terminal 133 Butt part 600 Test box 134 Container 610 microphone 140 aisle 700 Voice coil

[0027] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0029] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0030] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0031] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0032] This invention proposes a clamping assembly.

[0033] In existing technologies, the testing of loudspeaker diaphragms cannot be done immediately. The characteristics can only be judged after the loudspeakers are manufactured after delivery to the customer. This requires a large amount of inventory and carries the risk of returns, resulting in significant economic losses.

[0034] To address the aforementioned technical problems, the present invention employs a clamp assembly to fix the target component to a vibration device. The clamp assembly then transmits the mechanical vibration generated by the vibration device to the target component, thereby enabling testing. This allows for direct testing of the target component's characteristics at the production end, enabling timely and accurate assessment of these characteristics. This improves quality, reduces unnecessary economic losses, facilitates the timely detection of quality issues, eliminates quality risks, shortens the production cycle, and enhances enterprise competitiveness. Specifically, the clamp assembly's connector is fixed to the vibration device. The target component is clamped by the cooperation of the locking component and the connector. The connector and locking component also transmit the mechanical vibration generated by the vibration device to the target component, causing it to vibrate and allowing for the detection of its characteristics. Furthermore, the connector and locking component are detachably connected, allowing for the removal of the target component from the vibration device. This enables the replacement of different target components for testing by tightening and loosening the locking component and connector.

[0035] The above technical solution will be described in detail below with reference to the accompanying drawings.

[0036] In embodiments of the present invention, such as Figure 1-2 As shown, the clamping assembly is used to fix a target element to a vibration device, which generates mechanical vibration. Specifically, the clamping assembly 100 includes:

[0037] Connector, fixedly connected to the vibration device 200;

[0038] The locking member 130 is detachably connected to the connector. The connector and the locking member 130 cooperate to clamp the target element. The mechanical vibration generated by the vibration device 200 is transmitted to the target element through the connector and the locking member 130.

[0039] In this embodiment, the connector is connected to the vibration device 200 and can be fixed to the vibration device 200 by means of adhesive or other methods, ensuring that the mechanical vibration generated by the vibration device 200 can be transmitted to the connector. The locking member 130 is detachably connected to the connector. In specific implementation, the target element is located between the locking member 130 and the connector, and the locking member 130 is firmly connected to the connector, simultaneously clamping the target element. In this way, the target element is in close contact with the locking member 130 and the connector, and the mechanical vibration generated by the vibration device 200 is transmitted to the target element through the connector and the locking member 130, causing the target element to vibrate.

[0040] Optionally, the vibration device 200 is provided with a connection hole, and the connecting parts include a first connecting part 110 and a second connecting part 120;

[0041] The first connecting member 110 is fixedly sleeved on the outer peripheral surface of the vibration device 200, the second connecting member 120 is fixedly connected to the side wall of the connecting hole, and the locking member 130 is connected to the second connecting member 120.

[0042] In the specific implementation process, the first connecting member 110 has a second through hole, which mates with the outer peripheral surface of the vibration device 200, allowing the first connecting member 110 to adhere to the outer wall of the vibration device 200 through the second through hole and be connected by means of adhesive or screws. The outer peripheral surface of the second connecting member 120 is fitted with the inner sidewall of the connecting hole and connected by adhesive. Thus, the first connecting member 110 is fixed to the outer wall of the vibration device 200, and the second connecting member 120 is fixed to the inner wall of the vibration device 200. The locking member 130 is connected to the second connecting member 120. Specifically, the second connecting member 120 has a first through hole 121, and a connecting groove 122 is formed on the sidewall of the first through hole 121. The locking member 130 has a protrusion 131, which mates with the connecting groove 122.

[0043] Further, the connecting groove 122 is threadedly connected to the protrusion 131; or, the connecting groove 122 and the protrusion 131 are snapped together. In one embodiment, the connecting groove 122 and the protrusion 131 are mutually mating threaded grooves and threads, that is, the connecting groove 122 is a threaded groove and the protrusion 131 is a thread, and the two cooperate to screw the locking member 130 and the second connecting member 120 together and secure them together. The locking member 130 is securely connected to the second connecting member 120 by rotating it. In another embodiment, the connecting groove 122 and the protrusion 131 are snapped together, that is, the connecting groove 122 is a slot and the protrusion 131 is a hook. The locking member 130 is snapped into the slot by the hook. In practice, pressing the locking member 130 towards the fixing device causes the protrusion 131 to snap into the connecting groove 122, thus achieving a secure connection between the two.

[0044] Optionally, the target element has a central hole and is sleeved on the vibration device 200 through the central hole. A channel 140 is formed between the first connector 110 and the locking member 130. The target element extends away from the vibration device 200 through the channel 140. The locking member 130 moves toward the first connector 110 to reduce the channel 140 and clamp the target element.

[0045] In the specific implementation process, a central hole is opened at the center of the target element, which is then fitted onto the outer wall of the vibration device 200 and extends outwards. It is understandable that the central hole has a certain dimensional error in practice. To reduce the impact of the clamping assembly 100 on the vibration of the target element, the size of the clamping assembly 100 will not be very large in the specific implementation process, resulting in a short extension length of the channel 140. When the central hole of the target element is large, the clamping position of the target element may be located at the edge of the channel 140, leading to insecure clamping. In this embodiment, a clearance groove is opened along the side wall of the second through hole, creating a gap between the first connecting member 110 and the vibration device 200. This gap allows the portion of the target element near the central hole to be within the gap. The gap communicates with the channel 140, allowing the target element to have sufficient slack to be within the gap when extending through the channel 140, ensuring effective clamping of the target element. In this way, the clamped position of the target element can have a certain distance from the central hole. In addition, while ensuring the clamping effect, the contact area between the clamping assembly 100 and the target element can be reduced, thereby reducing the impact of the clamping assembly 100 on the vibration of the target element.

[0046] Optionally, the locking member 130 is provided with a connecting portion 132 and an abutting portion 133, and a receiving groove 134 is formed between the connecting portion 132 and the abutting portion 133. The receiving groove 134 is used to receive the second connecting member 120. The connecting portion 132 is connected to the second connecting member 120, and the abutting portion 133 cooperates with the first connecting member 110 to clamp the target element.

[0047] In practical implementation, the connecting part 132 and the abutting part 133 are located on the same side, and there is a receiving groove 134 between them. The width of the receiving groove 134 matches the thickness of the second connecting member 120, accommodating the second connecting member 120 inside. The connecting part 132 has a protrusion 131 on the side facing the receiving groove 134, which cooperates with the connecting groove 122 of the second connecting member 120 to realize the connection between the two. The end of the abutting part 133 cooperates with the first connecting member 110 to form a channel 140. While the connecting part 132 is connected to the second connecting member 120, the abutting part 133 cooperates with the first connecting member 110 to clamp the target element.

[0048] In addition, the outer walls of the channel 140 formed by the abutment part 133 and the second connector 120 are both provided with inclined surfaces, and the channel 140 is formed between the two inclined surfaces. The extension direction of the channel 140 is consistent with the extension direction of the target element. Furthermore, the two inclined surfaces fit against the outer wall of the target element to avoid damage to the target element when clamping.

[0049] In another embodiment, a loudspeaker diaphragm characteristic detection device is also proposed for detecting the characteristics of the diaphragm 300. The detection device includes a vibration device 200 and a clamp assembly 100 as described in the above embodiments, wherein the clamp assembly 100 is connected to the vibration device 200 and the clamp assembly 100 respectively, and the vibration device 200 is used to generate mechanical vibration.

[0050] In the specific implementation process, such as Figure 3-5 As shown, the detection device is used to detect the characteristics of the loudspeaker diaphragm 300 and generate a characteristic curve. The vibration device 200 is fixedly connected to the clamp assembly 100 to ensure that the mechanical vibration generated by the vibration device 200 can be transmitted to the clamp assembly 100. Furthermore, the clamp assembly 100 also transmits the mechanical vibration to the diaphragm 300, causing the diaphragm 300 to vibrate and thus enabling the detection of its characteristics. In this embodiment, the clamp assembly 100 and the diaphragm 300 are detachably connected. When testing the next diaphragm 300, the previous diaphragm 300 can be removed and replaced with the next diaphragm 300, which is convenient for disassembly and assembly and improves the efficiency of detection.

[0051] Optionally, the detection device further includes a T-iron 400, and the vibration device 200 includes a voice coil 700, which is sleeved on the T-iron 400. The T-iron 400 is also sleeved with a magnet 410 and a washer 420. The magnet 410 and the washer 420 are respectively provided with through holes, and the two are sleeved on the T-iron 400 through the through holes. The side of the washer 420 away from the magnet 410 is connected to a frame 430, which is also sleeved on the outside of the voice coil 700. The voice coil 700 is also sleeved with a spider 440, which is located on the side of the frame 430 away from the washer 420. The clamp assembly 100 is connected to the voice coil 700.

[0052] In practical implementation, the diaphragm 300 primarily functions to assemble the loudspeaker, and as its core component, it significantly impacts sound quality. Therefore, to improve the effectiveness and accuracy of diaphragm 300 detection, the mechanical vibration generated by the vibration device 200 needs to be closely matched to the mechanical vibration generated by the loudspeaker. Thus, in this embodiment, the detection device also includes a T-iron 400, and the vibration device 200 includes a voice coil 700 fitted onto the T-iron 400. In a typical loudspeaker, the T-iron 400, magnet 410, washer 420, voice coil 700, frame 430, and pluck are all indispensable components. The detection device in this embodiment also includes these components, making the detection device more closely aligned with the actual loudspeaker and improving the effectiveness and accuracy of the detection.

[0053] In this embodiment, the clamp assembly 100 is connected to the voice coil 700 and the diaphragm 300 respectively. Specifically, the first connector 110 of the clamp assembly 100 is sleeved on the outer peripheral surface of the voice coil 700, and the axis of the first connector 110 coincides with the axis of the voice coil 700, so that mechanical vibration can be transmitted evenly.

[0054] In existing loudspeakers, the voice coil 700 and diaphragm 300 are connected by adhesive. If the diaphragm 300 is directly mounted on the voice coil 700 to form a loudspeaker for testing, the adhesive connection between the voice coil 700 and the diaphragm 300 makes it difficult to disassemble the diaphragm 300, affecting testing efficiency. In this embodiment, the voice coil 700 and diaphragm 300 are connected by a clamp assembly 100, and the mechanical vibration generated by the voice coil 700 is transmitted to the diaphragm 300 through the clamp assembly 100, making it easy to disassemble the voice coil 700 and the diaphragm 300 for easy replacement of the diaphragm 300. Specifically, the first connecting member 110 of the clamp assembly 100 is sleeved on the outer peripheral surface of the voice coil 700 and is located near the end of the voice coil 700. In practice, the first connecting member 110 is attached to the outer wall of the voice coil 700 through the second through hole and fixed by adhesive. The outer wall of the second connecting member 120 of the clamp assembly 100 is attached to the inner wall of the voice coil 700 and fixed by adhesive. The locking member 130 of the clamp assembly 100 is screwed or snapped into the second connecting member 120 for fixation. When the locking member 130 is locked to the second connecting member, it also cooperates with the first connecting member 110 to clamp the diaphragm 300, thus connecting the diaphragm 300 to the voice coil 700 via the clamp assembly 100. The mechanical vibration generated by the voice coil 700 is then transmitted to the diaphragm 300 through the clamp assembly 100. The connecting portion 132 of the locking member 130 is located inside the voice coil 700 and connects to the second connecting member 120 inside the voice coil 700. The abutting portion 133 of the locking member 130 is located outside the voice coil 700 and cooperates with the first connecting member 110 outside the voice coil 700. Simultaneously with the connection portion 132 and the second connecting member 120, the abutting portion 133 cooperates with the first connecting member 110 to clamp the diaphragm 300, thereby achieving the clamping and fixing of the diaphragm 300. The diaphragm 300 has a central hole with a diameter larger than the outer diameter of the voice coil 700, and the clamping assembly 100 can hold the diaphragm 300 when it is fitted onto the outer wall of the voice coil 700.

[0055] Optionally, the voice coil 700 is also connected to a terminal 500, which is fixed to the frame 430 and connected to a frequency response testing system. One end of the voice coil 700 is connected to a connecting wire, and the other end of the connecting wire is connected to the terminal 500. The terminal 500 is also connected to the frequency response testing system via an audio cable. The frequency response testing system is used to test the performance of the diaphragm 300 and generate characteristic curves. The performance of the diaphragm 300 is analyzed and studied based on the generated characteristic curves.

[0056] Furthermore, the testing device also includes a test chamber 600, which houses a microphone 610 connected to the frequency response testing system. In practice, the test chamber 600 has a test port, with the diaphragm 300 facing the test port. The outer diameter of the diaphragm 300 is larger than the diameter of the test port, allowing the diaphragm 300 to contact the test chamber 600. In practice, the diaphragm 300 has a flange on its edge away from the central hole, made of rubber. The diaphragm 300 is pressed against the test chamber 600 by hand or a clamping device, achieving a seal. In practice, for ease of testing, hand pressure is generally used to seal the connection. Additionally, the frequency response testing system includes a noise generator. The noise generator causes the voice coil 700 to emit noise, which the microphone 610 receives and transmits to the frequency response testing system for testing and generating characteristic curves.

[0057] The above description is merely an optional embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A clamping assembly for securing a target element to a vibration device, the vibration device being used to generate mechanical vibration, characterized in that, The clamp assembly includes: A connector is fixedly connected to the vibration device. The vibration device has a connection hole. The connector includes a first connector and a second connector. The first connector is fixedly sleeved on the outer peripheral surface of the vibration device, and the second connector is fixedly connected to the side wall of the connection hole. A locking member is detachably connected to the connecting member. The connecting member and the locking member cooperate to clamp the target element. The mechanical vibration generated by the vibration device is transmitted to the target element through the connecting member and the locking member. The locking member is connected to the second connecting member. The target element has a central hole and is sleeved onto the vibration device through the central hole. A channel is formed between the first connector and the locking member. The target element extends away from the vibration device through the channel. The locking member moves toward the first connector to reduce the channel and clamp the target element.

2. The clamping assembly as claimed in claim 1, characterized in that, The second connector has a first through hole, and a connecting groove is formed on the side wall of the first through hole. The locking member has a protrusion, and the protrusion is engaged with the connecting groove.

3. The clamping assembly as claimed in claim 2, characterized in that, The connecting groove is connected to the protruding thread; or... The connecting groove engages with the protrusion.

4. The clamping assembly as claimed in claim 2, characterized in that, The locking member has a connecting part and an abutting part, and a receiving groove is formed between the connecting part and the abutting part. The receiving groove is used to receive the second connecting member. The connecting part is connected to the second connecting member, and the abutting part cooperates with the first connecting member to clamp the target element.

5. A loudspeaker diaphragm characteristic detection device, used to detect the characteristics of the diaphragm, characterized in that, It includes a vibration device and a clamping assembly as described in any one of claims 1-4, wherein the clamping assembly is connected to the vibration device and the diaphragm respectively, and the vibration device is used to generate mechanical vibration.

6. The loudspeaker diaphragm characteristic detection device as described in claim 5, characterized in that, The detection device further includes a T-iron, and the vibration device includes a voice coil fitted onto the T-iron. The T-iron is also fitted with a magnet and a washer. The magnet and the washer each have through holes, and both are fitted onto the T-iron through the through holes. A frame is connected to the side of the washer away from the magnet. The frame is also fitted onto the outside of the voice coil. The voice coil is also fitted with a spring, which is located on the side of the frame away from the washer. The clamp assembly is connected to the voice coil.

7. The loudspeaker diaphragm characteristic detection device as described in claim 6, characterized in that, The voice coil is also connected to a terminal, which is fixed to the frame and connected to a frequency response testing system.

8. The loudspeaker diaphragm characteristic detection device as described in claim 7, characterized in that, The testing device also includes a test chamber, which contains a microphone connected to the frequency response testing system.

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