CN115379373A

CN115379373A - Method and device for detecting interference fit reliability and electronic equipment

Info

Publication number: CN115379373A
Application number: CN202211047552.9A
Authority: CN
Inventors: 周江豹; 张迪
Original assignee: Weifang Geldanna Electronic Technology Co ltd
Current assignee: Weifang Geldanna Electronic Technology Co ltd
Priority date: 2022-08-29
Filing date: 2022-08-29
Publication date: 2022-11-22

Abstract

The disclosure provides a method and a device for detecting interference fit reliability and electronic equipment, wherein the method comprises the following steps: acquiring the matching size of a frame and a U-shaped iron in the loudspeaker and the limit stress of a material of the frame; the basin frame and the U-shaped iron are assembled in an interference fit mode; determining the minimum interference magnitude and the maximum interference magnitude of the matching of the basin frame and the U-shaped iron according to the matching size; determining a current contact stress of the frame when the frame and the U-shaped iron are matched through the maximum interference; determining a minimum push-out force required for pushing the U-shaped iron out of the basin frame when the basin frame and the U-shaped iron are matched through the minimum interference magnitude; determining the maximum impact force of the U-shaped iron under the condition that the loudspeaker is impacted by external vibration; and detecting whether the interference fit between the basin frame and the U-shaped iron is reliable or not according to the maximum impact force, the minimum push-out force, the current contact stress and the limit stress.

Description

Method and device for detecting interference fit reliability and electronic equipment

Technical Field

The present disclosure relates to the field of speaker detection technologies, and in particular, to a method and an apparatus for detecting interference fit reliability, and an electronic device.

Background

The loudspeaker is an acoustic device for realizing sound production through sound-electricity conversion, the loudspeaker is various in types, and the electrodynamic loudspeaker is used more generally.

The dynamic loudspeaker generally comprises a frame and a magnetic circuit system, wherein a U-shaped iron 2 in the magnetic circuit system is assembled with the frame 1 generally in an interference fit manner, as shown in fig. 1 and 2. In the case where the frame 1 is assembled with the U-iron 2 by interference fit, the relative relationship between the inner diameter 3 of the frame and the outer diameter 4 of the U-iron may be as shown in fig. 2.

However, if the interference between the frame and the U-shaped iron is small, the bonding force between the frame and the U-shaped iron is small, and the frame and the U-shaped iron may be separated when the speaker vibrates. If the interference between the frame and the U-shaped iron is too large, the frame may generate contact stress exceeding the ultimate strength of the material of the frame, and the frame may crack.

Therefore, it would be valuable to provide a solution that detects the reliability of the interference fit between the U-iron and the frame prior to assembly.

Disclosure of Invention

One object of this disclosure is to provide a new technical scheme of detecting basin frame and U iron interference fit reliability in speaker.

According to a first aspect of the present disclosure, a method for detecting interference fit reliability is provided, including:

acquiring the matching size of a frame and a U-shaped iron in a loudspeaker and the limit stress of the material of the frame; the basin frame and the U-shaped iron are assembled in an interference fit mode;

determining the minimum interference magnitude and the maximum interference magnitude of the matching of the basin stand and the U-shaped iron according to the matching size;

determining a current contact stress of the frame when the frame and the U-shaped iron are matched through the maximum interference;

determining a minimum push-out force required for pushing the U-shaped iron out of the basin frame when the basin frame and the U-shaped iron are matched through the minimum interference magnitude;

determining the maximum impact force of the U-shaped iron under the condition that the vibration of the loudspeaker is impacted by external vibration;

and detecting whether the interference fit between the basin frame and the U-shaped iron is reliable or not according to the maximum impact force, the minimum push-out force, the current contact stress and the limit stress.

Optionally, the detecting whether the interference fit between the basin stand and the U-shaped iron is reliable according to the maximum impact force, the minimum push-out force, the current contact stress and the limit stress includes:

comparing the current contact stress with the limit stress;

determining that the interference fit between the basin stand and the U-shaped iron is unreliable under the condition that the current contact stress is greater than or equal to the limit stress;

and under the condition that the current contact stress is smaller than the limit stress, detecting whether the interference fit between the basin frame and the U-shaped iron is reliable or not according to the maximum impact force and the minimum push-out force.

Optionally, detecting whether the interference fit between the basin frame and the U-shaped iron is reliable according to the maximum impact force and the minimum push-out force includes:

comparing the maximum impact force to the minimum ejection force;

determining that the interference fit between the basin stand and the U-shaped iron is reliable under the condition that the maximum impact force is smaller than the minimum push-out force;

and determining that the interference fit between the basin stand and the U-shaped iron is unreliable under the condition that the maximum impact force is greater than or equal to the minimum push-out force.

Optionally, the method further includes:

in the case where the current contact stress is greater than or equal to the limit stress, the fitting dimension is adjusted to reduce the maximum interference.

Optionally, the method further includes:

and under the condition that the maximum impact force is greater than or equal to the minimum push-out force, adjusting the fit size to enable the maximum impact force to be smaller than the minimum push-out force.

Optionally, the method further includes:

and stopping executing the step of determining the minimum push-out force and the maximum impact force when the current contact stress is greater than or equal to the limit stress.

Optionally, when determining that the frame and the U-iron are matched by the minimum interference, the minimum push-out force required to push the U-iron out of the frame includes:

acquiring physical property parameters of the material of the basin frame as first physical property parameters, and acquiring physical property parameters of the material of the U-shaped iron as second physical property parameters; wherein the physical property parameter is a parameter which influences the acting force between the basin frame and the U-shaped iron;

and determining the minimum push-out force according to the minimum interference magnitude, the first physical property parameter and the second physical property parameter.

According to a second aspect of the present disclosure, there is provided a device for detecting interference fit reliability, including:

the acquisition module is used for acquiring the matching size of a frame and U-shaped iron in the loudspeaker and the limit stress of the material of the frame; the basin frame and the U-shaped iron are assembled in an interference fit mode;

the interference magnitude determining module is used for determining the minimum interference magnitude and the maximum interference magnitude of the matching of the basin stand and the U-shaped iron according to the matching size;

the stress determination module is used for determining the current contact stress of the basin stand when the basin stand and the U-shaped iron are matched through the maximum interference magnitude;

the push-out force determining module is used for determining the minimum push-out force required by pushing the U iron out of the basin frame when the basin frame and the U iron are matched through the minimum interference magnitude;

the impact force determining module is used for determining the maximum impact force applied to the U-shaped iron under the condition that the loudspeaker is impacted by external vibration;

and the reliable detection module is used for detecting whether the interference fit between the basin frame and the U-shaped iron is reliable or not according to the maximum impact force, the minimum push-out force, the current contact stress and the limit stress.

According to a third aspect of the present disclosure, there is provided an electronic device comprising:

the apparatus of the second aspect of the disclosure; or,

a processor and a memory for storing instructions for controlling the processor to perform the method according to the first aspect of the present disclosure.

According to a fourth aspect of the present disclosure, there is provided a readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method according to the first aspect of the present disclosure.

Through the embodiment of the disclosure, the basin frame assembled through interference fit and the connecting piece of the U iron do not need to be tested, and whether the interference fit between the basin frame to be assembled and the U iron is reliable or not can be detected according to the maximum impact force, the minimum push-out force, the current contact stress and the limit stress, so that the detection efficiency of the reliability of the interference fit between the basin frame and the U iron can be improved, the cost of reliability detection is reduced, and the product qualification rate of the loudspeaker is improved. In addition, the fit dimension of the basin frame and the U iron can be automatically adjusted under the condition that the interference fit between the basin frame and the U iron is unreliable, so that the interference fit between the basin frame and the U iron is reliable.

Other features of the present disclosure and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 shows a schematic view of a connection structure of a tub stand and a U-iron according to an embodiment of the present disclosure.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

FIG. 3 shows a block diagram of one example of a hardware configuration of an electronic device that may be used to implement embodiments of the present disclosure.

Fig. 4 shows a flowchart of a method for detecting reliability of interference fit according to an embodiment of the present disclosure.

Fig. 5 is a flowchart illustrating an example of a method for detecting reliability of interference fit according to an embodiment of the present disclosure.

Fig. 6 shows a block diagram of a device for detecting interference fit reliability of an embodiment of the present disclosure.

Fig. 7 shows a block diagram of an electronic device of an embodiment of the disclosure.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present disclosure unless specifically stated otherwise.

The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the disclosure, its application, or uses.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

< hardware configuration >

The electronic device 1000 may be a smart phone, a portable computer, a desktop computer, a tablet computer, a server, and the like, which is not limited herein.

The electronic device 1000 may include, but is not limited to, a processor 1100, a memory 1200, an interface device 1300, a communication device 1400, a display device 1500, an input device 1600, a speaker 1700, a microphone 1800, and the like. The processor 1100 may be a central processing unit CPU, a graphics processing unit GPU, a microprocessor MCU, or the like, and is configured to execute a computer program, and the computer program may be written by using an instruction set of architectures such as x86, arm, RISC, MIPS, and SSE. The memory 1200 includes, for example, a ROM (read only memory), a RAM (random access memory), a nonvolatile memory such as a hard disk, and the like. The interface device 1300 includes, for example, a USB interface, a serial interface, a parallel interface, and the like. The communication device 1400 is capable of wired communication using an optical fiber or a cable, or wireless communication, and specifically may include WiFi communication, bluetooth communication, 2G/3G/4G/5G communication, and the like. The display device 1500 is, for example, a liquid crystal display panel, a touch panel, or the like. The input device 1600 may include, for example, a touch screen, a keyboard, a somatosensory input, and the like. The speaker 1700 is used to output an audio signal. The microphone 1800 is used to collect audio signals.

As applied to the disclosed embodiments, the memory 1200 of the electronic device 1000 is used to store a computer program for controlling the processor 1100 to operate to implement the methods according to the disclosed embodiments. The skilled person can design the computer program according to the solution disclosed in the present disclosure. How the computer program controls the operation of the processor is well known in the art and will not be described in detail here. The electronic device 1000 may be installed with an intelligent operating system (e.g., windows, linux, android, IOS, etc. systems) and application software.

It should be understood by those skilled in the art that although a plurality of means of the electronic device 1000 are shown in fig. 3, the electronic device 1000 of the embodiments of the present disclosure may refer to only some of the means therein, for example, only the processor 1100 and the memory 1200, etc.

Various embodiments and examples according to the present invention are described below with reference to the accompanying drawings.

< method example >

In the embodiment, a method for detecting the reliability of the interference fit is provided. The method is implemented by an electronic device. The electronic device may be an electronic product having a processor and a memory. For example, it may be a desktop computer, a notebook computer, a mobile phone, a tablet computer, etc. In one example, the electronic device may be provided as electronic device 1000 shown in FIG. 3.

Fig. 4 is a schematic flow chart of a method for detecting interference fit reliability according to an embodiment of the present disclosure. As shown in fig. 4, the method for detecting the interference fit reliability of the present embodiment includes steps S4100 to S4600:

step S4100, acquiring a fitting size of the frame and the U-iron in the speaker, and a limit stress of a material of the frame.

Wherein, basin frame and U iron are waited to assemble through interference fit's mode. The interference fit is that the elasticity of the material is utilized to lead the material to generate certain deformation, for example, the basin frame is expanded and deformed to be sleeved on the U-shaped iron, and when the basin frame is restored, the U-shaped iron is hooped by the basin frame, so that the basin frame and the U-shaped iron are assembled together; or the U-shaped iron is contracted in outer diameter and sleeved in the basin frame, and the U-shaped iron is tightly assembled with the basin frame after being restored.

In this embodiment, the fitting dimensions of the basin stand and the U-shaped iron can include: the inner diameter size of the basin frame, the first tolerance of the basin frame, the outer diameter size of the U-shaped iron and the second tolerance of the U-shaped iron. Wherein, the first tolerance is the allowable variation of the inner diameter size of the basin frame, and the second tolerance is the allowable variation of the outer diameter size of the U-shaped iron.

The ultimate stress of the material of the frame may be obtained in advance from its material manufacturer, depending on the material of the frame.

And step S4200, determining the minimum interference magnitude and the maximum interference magnitude of the matching of the basin stand and the U-shaped iron according to the matching size.

Specifically, the maximum limit size of the basin frame can be obtained according to the inner diameter size of the basin frame and the first tolerance of the basin frame, the minimum limit size of the U iron can be obtained according to the outer diameter size of the U iron and the second tolerance of the U iron, and the difference value obtained by reducing the minimum limit size of the U iron and the maximum limit size of the basin frame is the minimum interference magnitude and is the loosest state of the basin frame and the U iron in a matching mode.

Obtaining the minimum limit size of the basin frame according to the inner diameter size of the basin frame and the first tolerance of the basin frame, obtaining the maximum limit size of the U iron according to the outer diameter size of the U iron and the second tolerance of the U iron, wherein the difference value obtained by reducing the minimum limit size of the basin frame from the maximum limit size of the U iron is the maximum interference magnitude, and the basin frame and the U iron are in the tightest state in matching.

Because the basin frame and the U-shaped iron are assembled in an interference fit mode, the minimum interference magnitude and the maximum interference magnitude of the fit of the basin frame and the U-shaped iron are positive values.

For example, if the inner diameter of the frame is D1, the first tolerance of the frame is ± D1, the outer diameter of the U-iron is D2, and the second tolerance of the U-iron is ± D2, then the minimum interference Ymin may be obtained by the following equation one, and the maximum interference Ymax may be obtained by the following equation two:

ymin = (D2-D2) - (D1 + D1) (formula I)

Ymax = (D2 + D2) - (D1-D1) (formula two)

And step S4300, determining the current contact stress of the basin stand when the basin stand and the U-shaped iron are matched through the maximum interference magnitude.

In one embodiment of the present disclosure, finite element software may be used to analyze the current contact stress of the frame and the U-iron when they are mated by maximum interference in a statics module.

Specifically, when the frame and the U-iron are matched by the maximum interference, the current contact stress of the frame may include steps S4310 to S4320 as follows:

step S4310, acquiring physical property parameters of the material of the basin frame as first physical property parameters, and acquiring physical property parameters of the material of the U-iron as second physical property parameters.

Wherein, the physical property parameter is a parameter which influences the acting force between the basin frame and the U-shaped iron. For example, at least one of the elastic modulus, poisson's ratio, yield strength, breaking strength, elongation of the material may be included.

Step S4320, determining a minimum pushing force according to the maximum interference magnitude, the first physical property parameter, and the second physical property parameter.

In one embodiment of the disclosure, the three-dimensional assembly model, the maximum interference magnitude, the first physical property parameter and the second physical property parameter of the basin frame and the U-shaped iron are input into a statics module of finite element software, and the current contact stress of the basin frame when the basin frame and the U-shaped iron are assembled through the maximum interference magnitude is obtained.

In another embodiment of the disclosure, a first mapping function reflecting a mapping relationship between the interference between the basin stand and the U-iron, the first physical parameter of the basin stand, the second physical parameter of the U-iron, and the contact stress of the basin stand may be pre-constructed, and the maximum interference, the first physical parameter, and the second physical parameter are input into the first mapping function, so that the current contact stress of the basin stand when the basin stand and the U-iron are matched by the maximum interference may be obtained.

Step S4400, determining the minimum pushing force required for pushing the U-shaped iron out of the basin frame when the basin frame and the U-shaped iron are matched through the minimum interference magnitude.

In one embodiment of the disclosure, finite element software can be used for simulating the pushing-out process of the U-shaped iron from the assembly model, and the minimum pushing-out force required by the basin stand and the U-shaped iron to push the U-shaped iron out of the basin stand when the basin stand and the U-shaped iron are matched through the minimum interference magnitude is obtained. The assembling model is a connecting piece formed by assembling the basin frame and the U-shaped iron in an interference fit mode with minimum interference.

Specifically, the step of determining the minimum push-out force required for pushing the U-iron out of the frame when the frame and the U-iron are matched through the minimum interference magnitude may include the following steps S4410 to S4420:

in step S4410, a first physical property parameter and a second physical property parameter are obtained.

Step S4420, determining a minimum ejection force according to the minimum interference magnitude, the first physical property parameter, and the second physical property parameter.

In one embodiment of the disclosure, the three-dimensional assembly model, the minimum interference magnitude, the first physical property parameter and the second physical property parameter of the basin frame and the U-shaped iron are input into finite element software, and the pushing-out process of the U-shaped iron from the assembly model is simulated, so that the minimum pushing-out force required for pushing the U-shaped iron out of the basin frame when the basin frame and the U-shaped iron are matched through the minimum interference magnitude is obtained.

In another embodiment of the disclosure, a second mapping function reflecting a mapping relation between the interference between the frame and the U-iron, the first physical parameter of the frame, the second physical parameter of the U-iron, and the minimum push-out force required for pushing the U-iron out of the frame may be pre-constructed, and the minimum interference, the first physical parameter, and the second physical parameter are input into the second mapping function, so that the minimum push-out force required for pushing the U-iron out of the frame when the frame and the U-iron are matched through the minimum interference can be obtained.

Step S4500 determines a maximum impact force applied to the U-iron when the speaker is subjected to external vibration impact.

In an embodiment of the present disclosure, a vibration process of the speaker may be simulated by using finite element software according to an environmental vibration condition preset by a client when the speaker works, so as to obtain a maximum impact force applied to the U-iron when the speaker is subjected to external vibration impact.

In this embodiment, the three-dimensional assembly model of the frame, the U-iron, the magnet to be mounted on the U-iron, and the washer, the first physical property parameter, the second physical property parameter, and the environmental vibration condition of the speaker during operation may be obtained in advance, and these data are input into the finite element software to simulate the vibration process of the speaker, so as to obtain the maximum impact force to which the U-iron is subjected when the speaker is subjected to external vibration impact. In this embodiment, the physical property parameter may include density.

Step S4600, detecting whether the interference fit between the basin frame and the U-shaped iron is reliable or not according to the maximum impact force, the minimum impact force, the current contact stress and the limit stress.

In one embodiment of the present disclosure, detecting whether the interference fit between the tub stand and the U-iron is reliable according to the maximum impact force, the minimum impact force, the current contact stress, and the limit stress may include steps S4610 to S4630 as follows:

step S4610, the current contact stress and the ultimate stress are compared.

Step S4620, determining that the interference fit between the basin frame and the U-shaped iron is unreliable under the condition that the current contact stress is greater than or equal to the limit stress.

In the case where the current contact stress is greater than or equal to the limit stress, the interference fit between the frame and the U-iron may cause the frame to crack, and thus, it may be determined that the interference fit between the frame and the U-iron is not reliable.

Further, in one embodiment of the present disclosure, the fit dimension is adjusted to reduce the maximum interference in the case where the current contact stress is greater than or equal to the limit stress.

In this embodiment, the adjusting of the fitting size may include at least one of adjusting an inner diameter size of the frame, adjusting a first tolerance of the frame, adjusting an outer diameter size of the U-iron, and adjusting a second tolerance of the U-iron.

For example, the maximum interference can be reduced by at least one of increasing an inner diameter dimension of the frame, decreasing a first tolerance of the frame, decreasing an outer diameter dimension of the U-iron, and decreasing a second tolerance of the U-iron.

Step S4630, detecting whether the interference fit between the basin stand and the U-shaped iron is reliable or not according to the maximum impact force and the minimum pushing force under the condition that the current contact stress is smaller than the limit stress.

In one embodiment of the present disclosure, in the case where the current contact stress is greater than the limit stress, it has been determined that the interference fit between the frame and the U-iron is not reliable, and therefore, it is not necessary to detect whether the interference fit between the frame and the U-iron is reliable based on the maximum impact force and the minimum push-out force. That is, in the case where the current contact stress is greater than the limit stress, the execution of the aforementioned steps S4400 and S4500 may be stopped, i.e., the determination of the minimum push-out force and the maximum impact force may be stopped.

In an embodiment of the present disclosure, detecting whether the interference fit between the tub frame and the U-iron is reliable according to the maximum impact force and the minimum push-out force may include steps S4631 to S4633 as follows:

step S4631, the maximum impact force and the minimum push-out force are compared.

Step S4632, determining that the interference fit between the basin stand and the U-shaped iron is reliable under the condition that the maximum impact force is smaller than the minimum push-out force.

The fact that the maximum impact force is smaller than the minimum push-out force indicates that the U-shaped iron cannot be pushed out of the basin frame when the loudspeaker is vibrated by the outside world, and therefore the fact that the interference fit between the basin frame and the U-shaped iron is reliable can be judged.

Step S4633, determining that the interference fit between the tub stand and the U-iron is unreliable if the maximum impact force is greater than or equal to the minimum push-out force.

Under the condition that the maximum impact force is larger than or equal to the minimum pushing force, the combination force of the U iron and the basin frame is small, and the U iron and the basin frame can be separated when the loudspeaker is vibrated by the outside, so that the unreliable interference fit between the basin frame and the U iron can be judged.

In this embodiment, it may be determined that the interference fit between the frame and the U-iron is unreliable in the case that the current contact stress is greater than or equal to the limit stress, or the current contact stress is less than the limit stress and the maximum impact force is greater than or equal to the minimum push-out force; it may be determined that the interference fit between the tub stand and the U-iron is reliable in the case where the current contact stress is less than the limit stress and the maximum impact force is less than the minimum push-out force.

In this embodiment, the adjusting of the fitting dimension may include at least one of adjusting an inner diameter dimension of the frame, adjusting a first tolerance of the frame, adjusting an outer diameter dimension of the U-iron, and adjusting a second tolerance of the U-iron.

For example, the maximum interference can be increased by at least one of decreasing the inner diameter dimension of the frame, increasing the first tolerance of the frame, increasing the outer diameter dimension of the U-iron, and increasing the second tolerance of the U-iron, such that the maximum impact force is less than the minimum push-out force.

In the embodiment of the disclosure, the connecting piece of the basin frame and the U iron assembled through interference fit is not required to be tested, and whether the interference fit between the basin frame and the U iron to be assembled is reliable or not can be detected according to the maximum impact force, the minimum push-out force, the current contact stress and the limit stress, so that the detection efficiency of the reliability of the interference fit between the basin frame and the U iron can be improved, the cost of reliability detection is reduced, and the product qualification rate of the loudspeaker is improved. In addition, the fit dimension of the basin frame and the U iron can be automatically adjusted under the condition that the interference fit between the basin frame and the U iron is unreliable, so that the interference fit between the basin frame and the U iron is reliable.

< example >

Fig. 5 is a schematic diagram of an example of a method for detecting interference fit reliability according to an embodiment of the present disclosure.

As shown in fig. 5, the method may include steps S5001 to S5010 as follows:

step S5001, acquiring the limit stress of the material of the frame in the loudspeaker.

Step S5002, setting the matching size of the basin frame and the U-shaped iron in the loudspeaker.

Step S5003, determining the minimum interference magnitude and the maximum interference magnitude of the matching of the basin frame and the U-shaped iron according to the matching size.

Step S5004, determining the current contact stress of the basin stand when the basin stand and the U-shaped iron are matched through the maximum interference magnitude.

Step S5005, comparing whether the current contact stress is smaller than the limit stress, if so, executing step S5006; if not, step S5010 is executed.

Step S5006, determining the minimum push-out force required for pushing the U-shaped iron out of the basin frame when the basin frame and the U-shaped iron are matched through the minimum interference magnitude.

Step S5007, determining the maximum impact force to which the U-iron is subjected under the condition that the loudspeaker is subjected to external vibration impact.

Step S5008, comparing whether the maximum impact force is smaller than the minimum push-out force, if so, executing step S5009; if not, step S5010 is executed.

Step S5009, determining that the interference fit between the basin frame and the U-shaped iron is reliable.

Step S5010, determining that the interference fit between the tub frame and the U-iron is unreliable.

In this embodiment, in the case that the interference fit between the frame and the U-iron is determined to be unreliable, the step S5002 may be performed again, and whether the interference fit between the frame and the U-iron is reliable at the new fitting size may be determined through the steps S5002 to S5010.

< apparatus embodiment >

In the present embodiment, a device 6000 for detecting reliability of interference fit is provided, as shown in fig. 6, the device 6000 includes an obtaining module 6100, an interference magnitude determining module 6200, a stress determining module 6300, a push-out force determining module 6400, an impact force determining module 6500, and a reliability detecting module 6600. The acquisition module 6100 is used to acquire the fitting dimensions of the frame and the U-iron in the speaker and the ultimate stress of the material of the frame; the basin frame and the U-shaped iron are assembled in an interference fit mode; the interference magnitude determining module 6200 is used for determining the minimum interference magnitude and the maximum interference magnitude of the fit of the basin frame and the U-shaped iron according to the fit size; the stress determination module 6300 is used to determine the current contact stress of the frame when the frame and the U-iron are matched by the maximum interference; the push-out force determining module 6400 is configured to determine a minimum push-out force required to push the U-iron out of the frame when the frame and the U-iron are matched with each other by a minimum interference amount; the impact force determining module 6500 is used for determining the maximum impact force applied to the U-iron when the loudspeaker is subjected to external vibration impact; the reliable detection module 6600 is used for detecting whether the interference fit between the basin stand and the U-shaped iron is reliable or not according to the maximum impact force, the minimum push-out force, the current contact stress and the limit stress.

In one embodiment of the present disclosure, the reliable detection module 6600 may also be used to:

comparing the current contact stress with the limit stress;

determining that the interference fit between the basin frame and the U-shaped iron is unreliable under the condition that the current contact stress is greater than or equal to the limit stress;

In one embodiment of the present disclosure, detecting whether an interference fit between a tub frame and a U-iron is reliable according to a maximum impact force and a minimum push-out force includes:

comparing the maximum impact force with the minimum push-out force;

determining that the interference fit between the basin frame and the U-shaped iron is reliable under the condition that the maximum impact force is smaller than the minimum push-out force;

determining that the interference fit between the tub stand and the U-iron is unreliable if the maximum impact force is greater than or equal to the minimum push-out force.

In one embodiment of the present disclosure, the detection apparatus 6000 further includes:

and adjusting the fitting size to reduce the maximum interference in the case that the current contact stress is greater than or equal to the limit stress.

In one embodiment of the present disclosure, the detecting device 6000 further includes:

and the module is used for adjusting the matching size under the condition that the maximum impact force is greater than or equal to the minimum push-out force, so that the maximum impact force is smaller than the minimum push-out force.

means for ceasing execution of the steps of determining the minimum ejection force and the maximum impact force if the current contact stress is greater than or equal to the threshold stress.

In one embodiment of the disclosure, determining a minimum ejection force required to eject the clevis out of the frame when the frame and clevis are mated by a minimum interference comprises:

acquiring physical property parameters of a material of the basin frame as first physical property parameters, and acquiring physical property parameters of a material of the U-shaped iron as second physical property parameters; wherein the physical property parameter is a parameter influencing the acting force between the basin frame and the U iron;

It will be appreciated by those skilled in the art that the interference fit reliability detection apparatus 6000 can be implemented in various ways. For example, the processor may be configured by instructions to implement the interference fit reliability detection apparatus 6000. For example, the instructions may be stored in ROM and read from ROM into a programmable device when the device is started up to implement the interference fit reliability detection means 6000. For example, the interference fit reliability detection apparatus 6000 may be cured into a dedicated device (e.g., ASIC). The interference fit reliability detecting means 6000 may be divided into units independent of each other, or they may be implemented by being combined together. The interference fit reliability detection means 6000 may be implemented by one of the various implementations described above, or may be implemented by a combination of two or more of the various implementations described above.

In this embodiment, the interference reliability detection device 6000 may have various implementation forms, for example, the interference reliability detection device 6000 may be any functional module running in a software product or an application providing the interference reliability detection service, or a peripheral insert, a plug-in, a patch, etc. of the software product or the application, and may also be the software product or the application itself.

< electronic device embodiment >

The present disclosure also provides an electronic device 7000.

In one embodiment, the electronic device 7000 may comprise the aforementioned detection apparatus 6000 for interference fit reliability.

In another embodiment, the electronic device 7000 may further comprise a processor 7100 as shown in fig. 7 and a memory 7200, the memory 7200 storing executable instructions; the instruction is used to control the processor 7100 to perform the aforementioned method for detecting the reliability of the interference fit.

In this embodiment, the electronic device 7000 may be any electronic product having the processor 7100 and the memory 7200, such as a mobile phone, a tablet computer, a palmtop computer, a desktop computer, a notebook computer, a workstation, a game console, a server, and the like.

< readable storage Medium embodiment >

In this embodiment, a readable storage medium is further provided, on which a computer program is stored, which when executed by a processor, implements the method for detecting the interference fit reliability according to any embodiment of the present disclosure.

The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.

The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as a punch card or an in-groove protruding structure with instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be interpreted as a transitory signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or an electrical signal transmitted through an electrical wire.

The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.

Computer program instructions for carrying out operations of the present disclosure may be assembler instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).

Various aspects of the present disclosure are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the disclosure. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.

These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.

The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.

The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, implementation by software, and implementation by a combination of software and hardware are equivalent.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or technical improvements to the market, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A method for detecting interference fit reliability is characterized by comprising the following steps:

acquiring the matching size of a frame and a U-shaped iron in the loudspeaker and the limit stress of a material of the frame; the basin frame and the U-shaped iron are assembled in an interference fit mode;

determining the maximum impact force of the U-shaped iron under the condition that the loudspeaker is impacted by external vibration;

2. The method of claim 1, wherein detecting whether the interference fit between the frame and the clevis is reliable based on the maximum impact force, the minimum push-out force, the current contact stress, and the threshold stress comprises:

comparing the current contact stress and the ultimate stress;

determining that an interference fit between the basket and the U-bar is unreliable if the current contact stress is greater than or equal to the ultimate stress;

3. The method of claim 2, wherein the detecting whether the interference fit between the tub frame and the clevis is reliable based on the maximum impact force and the minimum push-out force comprises:

comparing the maximum impact force and the minimum ejection force;

and determining that the interference fit between the basin frame and the U-shaped iron is unreliable under the condition that the maximum impact force is greater than or equal to the minimum push-out force.

4. The method of claim 2, further comprising:

5. The method of claim 3, further comprising:

6. The method of claim 1, further comprising:

stopping the step of determining the minimum ejection force and the maximum impact force when the current contact stress is greater than or equal to the ultimate stress.

7. The method of claim 1, wherein the determining a minimum ejection force required for the tub shelf and the U-iron to eject the U-iron out of the tub shelf when mated by the minimum interference comprises:

acquiring physical parameters of the material of the basin frame as first physical parameters, and acquiring physical parameters of the material of the U-shaped iron as second physical parameters; wherein the physical parameters are parameters influencing the acting force between the basin stand and the U-shaped iron;

and determining the minimum push-out force according to the minimum interference magnitude, the first physical parameter and the second physical parameter.

8. The utility model provides a detection device of interference fit reliability which characterized in that includes:

the interference magnitude determining module is used for determining the minimum interference magnitude and the maximum interference magnitude of the matching of the basin frame and the U-shaped iron according to the matching size;

9. An electronic device, comprising:

the apparatus of claim 8; or,

a processor and a memory for storing instructions for controlling the processor to perform the method of any of claims 1 to 7.

10. A readable storage medium, characterized in that a computer program is stored thereon, which computer program, when being executed by a processor, carries out the method according to any one of claims 1 to 7.