A skin elasticity detector

Abstract

The application belongs to the technical field of cosmetic detection equipment, and particularly relates to a skin elasticity detector, which comprises a shell, an adsorption part, a negative pressure generating device, a main control circuit board, an optical detection assembly and a light path forming mechanism arranged in the shell. The adsorption part is provided with a communicating air cavity and a skin adsorption hole. The negative pressure generating device is used for establishing negative pressure in the air cavity and then releasing the negative pressure. The optical detection assembly comprises a light source and a light receiver. The light path forming mechanism is used for forming parallel light paths of the light beams emitted by the light source and guiding the light beams to the light receiver after the light beams pass through the detection area of the air cavity. When the negative pressure is established in the air cavity, the skin is adsorbed by the skin adsorption hole and protrudes into the detection area of the air cavity and blocks at least part of the parallel light paths. When the negative pressure of the air cavity is released, the skin elastically retracts to release the blocking of the parallel light paths. The technical scheme is applied to solve the problems of the skin detection instrument in the prior art, such as complicated operation, inconvenient use and user's pain and discomfort caused by the detection process.

Description

Technical Field

[0001] This application belongs to the field of beauty testing equipment technology, and in particular relates to a skin elasticity tester. Background Technology

[0002] Skin is a mirror reflecting the body's physiological and health status. With improved living standards, people are paying increasing attention to health care, especially facial skincare. Because everyone's constitution is different, skin conditions and elasticity vary. Users need to have their skin tested to determine its elasticity. Users can then choose skincare products, such as hydrating products, based on their skin elasticity. Furthermore, after using skincare products, users can have their skin elasticity tested again to understand whether the products have produced beneficial effects.

[0003] Furthermore, existing skin detection instruments are complex in design, leading to cumbersome operation and inconvenience for users. Moreover, some existing skin detection instruments cause pain upon contact with the skin, resulting in user discomfort. Utility Model Content

[0004] The purpose of this application is to provide a skin elasticity testing instrument, which aims to solve the problems of existing skin testing instruments being cumbersome to operate and inconvenient to use, and causing pain and discomfort to users' skin during the testing process.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a skin elasticity detector, comprising a housing, an adsorption unit, a negative pressure generating device, a main control circuit board, an optical detection assembly, and a light path forming mechanism. The adsorption unit is located in the housing and has an air cavity and a skin adsorption hole. The air cavity is connected to the skin adsorption hole. The negative pressure generating device is located inside the housing and the air cavity is connected to the negative pressure generating device via a pipeline. The negative pressure generating device is used to establish a negative pressure in the air cavity and then release the negative pressure. The main control circuit board is located inside the housing and is electrically connected to the negative pressure generating device. The optical detection assembly includes a light source and a light receiver. Both the light source and the light receiver are electrically connected to the main control circuit board. The light path forming mechanism is located inside the air cavity and is situated in the light propagation path between the light source and the light receiver. The light path forming mechanism is used to form a parallel light path from the light beam emitted by the light source and guide it through the detection area of ​​the air cavity to reach the light receiver. Specifically, when the negative pressure generating device establishes negative pressure within the air chamber, the skin is attracted by the skin adsorption holes and protrudes into the detection area of ​​the air chamber, blocking at least part of the parallel light path; when the negative pressure in the air chamber is released, the skin elastically retracts to release the obstruction of the parallel light path. Furthermore, the main control circuit board is configured to receive the detection signal from the photodetector and output a skin elasticity indication signal.

[0006] In some embodiments, the adsorption unit further includes a first mounting cavity and a second mounting cavity. A first optical path channel is provided between the first mounting cavity and the air cavity, and a second optical path channel is provided between the second mounting cavity and the air cavity. A light source is located in the first mounting cavity, and a light receiver is located in the second mounting cavity. The light beam emitted by the light source illuminates the light path forming mechanism located in the air cavity through the first optical path channel, and is guided by the light path forming mechanism through the second optical path channel to illuminate the light receiver.

[0007] In some embodiments, the adsorption unit includes a first inner shell and a second inner shell, which are installed inside a housing and are interlocked to form an air cavity; a skin adsorption hole is provided in one of the first inner shell and the second inner shell, and a first mounting cavity and a first optical path channel are both provided in the other of the first inner shell and the second inner shell; and a second mounting cavity and a second optical path channel are both provided in one of the first inner shell and the second inner shell.

[0008] In some embodiments, the first mounting cavity, the second mounting cavity, the first optical path channel, and the second optical path channel are all disposed in the first inner shell or the second inner shell; the optical path forming mechanism includes a first reflector, a second reflector, a first condensing lens, and a second condensing lens, the first reflector and the second reflector being disposed in the air cavity and located on both sides of the skin adsorption hole; the first condensing lens is disposed in the first optical path channel, and the first condensing lens is used to collimate the light beam emitted by the light source into parallel light and to reflect the first reflector; the first reflector is used to reflect the light beam from the first condensing lens to the second reflector; the second reflector is used to reflect the received light beam to the second optical lens; the second condensing lens is disposed in the second optical path channel, and the second condensing lens is used to receive the light beam reflected by the second reflector.

[0009] In some embodiments, the insertion position between the first inner shell and the second inner shell is sealed by a sealing ring; the skin elasticity detector also includes a first sealing cylinder and a second sealing cylinder. The hole wall of the first optical path channel is provided with a continuous first rib protruding in the circumferential direction, and the hole wall of the second optical path channel is provided with a continuous second rib protruding in the circumferential direction. The first sealing cylinder is disposed in the first optical path channel, and the first sealing cylinder and the first rib clamp and fix the first condensing lens to seal and separate the air cavity and the first mounting cavity. The second sealing cylinder is disposed in the second optical path channel, and the second sealing cylinder and the second rib clamp and fix the second condensing lens to seal and separate the air cavity and the second mounting cavity.

[0010] In some embodiments, the skin elasticity tester further includes a display screen, which is mounted on the housing and electrically connected to the main control circuit board. The display screen is used to display the skin elasticity indication signal output by the main control circuit board.

[0011] In some embodiments, the housing includes a first outer shell and a second outer shell that can be independently separated from each other. The negative pressure generating device is disposed inside the first outer shell. The main control circuit board, the display screen, the first inner shell, and the second inner shell are all disposed inside the second outer shell. The first inner shell or the second inner shell is provided with a pipe connector that communicates with the air chamber. The pipe connector is connected to the negative pressure generating device through a pipeline. Furthermore, the connecting wires between the main control circuit board and the negative pressure generating device are arranged in parallel with the pipeline.

[0012] In some embodiments, the first housing is provided with a storage slot, the spatial shape of which is adapted to the contour shape of the second housing to accommodate the second housing.

[0013] In some embodiments, the skin elasticity tester further includes a solenoid valve, which is located inside the housing and is disposed on the pipeline between the air chamber and the negative pressure generating device. The solenoid valve is electrically connected to the main control circuit board.

[0014] In some embodiments, the skin elasticity detector further includes a battery and a charging circuit board, both of which are housed within the housing. The charging circuit board is electrically connected to the battery, and the battery is electrically connected to the main control circuit board.

[0015] This application has at least the following beneficial effects: The user uses the skin elasticity detector provided in the embodiments of this application to perform skin elasticity testing. The user places the skin adsorption hole against the surface of the skin to be tested and operates the main control circuit board. The main control circuit board controls the light source to emit a light beam, which is propagated by the light path forming mechanism to form a parallel light path. The light path forming mechanism guides the parallel light path to the light receiver. Simultaneously, the main control circuit board controls the negative pressure generating device to activate, thereby creating a negative pressure in the air chamber. When a negative pressure is created in the air chamber, the skin to be tested deforms under the negative pressure and bulges into the air chamber, blocking at least part of the parallel light path. Subsequently, the main control circuit board controls the negative pressure generating device to release the negative pressure in the air chamber, and the elastically deformed skin gradually recovers under its own elasticity, i.e., the skin elastically retracts to release the obstruction of the parallel light path. Thus, during the process from the skin elastically deforming and blocking at least part of the parallel light path to the skin elastically retracting to release the obstruction, the light receiver can detect the light signal of the parallel light path in real time and convert the light signal into an electrical signal, which is then transmitted to the main control circuit board. The main control circuit board obtains the corresponding skin elasticity value E based on the detection signal and outputs a skin elasticity indication signal. It is evident that the process of using this skin elasticity tester to test skin elasticity is not only simple and convenient, but also painless and harmless to the skin, enhancing the user's experience when testing skin elasticity. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, 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. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a skin elasticity testing instrument with a split structure according to an embodiment of this application; Figure 2 for Figure 1 The diagram shown is a front view of a skin elasticity testing device, in which the tubing has been removed. Figure 3 for Figure 2 The diagram shown is a top view of a skin elasticity testing device, in which the tubing has been removed. Figure 4 for Figure 1 The diagram shown is an exploded view of the skin elasticity tester. Figure 1 The pipeline has been removed. Figure 5 for Figure 1 The diagram shown is an exploded view of the skin elasticity tester. Figure 2 The pipeline has been removed. Figure 6 for Figure 1 The diagram shown is an exploded view of the skin elasticity tester. Figure 3 The pipeline has been removed. Figure 7 for Figure 2 Cross-sectional view along the AA direction; Figure 8 for Figure 3 Cross-sectional view along the BB direction.

[0018] The figures in the diagram are labeled as follows: 10. Shell; 11. First outer shell; 12. Second outer shell; 13. First main shell; 14. First shell cover; 15. Second main shell; 16. Second shell cover; 17. Storage slot; 20. Adsorption section; 201. Gas cavity; 202. Adsorption hole; 203. First mounting cavity; 204. Second mounting cavity; 205. First optical path channel; 206. Second optical path channel; 207. First rib; 208. Second rib; 21. First inner shell; 22. Second inner shell; 23. Pipe connector; 30. Negative pressure generating device; 31. Piping; 32. Solenoid valve; 40. Main control circuit board; 41. Control buttons; 50. Optical detection components; 51. Light source; 52. Light receiver; 60. Optical path forming mechanism; 61. First reflecting mirror; 62. Second reflecting mirror; 63. First condensing lens; 64. Second condensing lens; 71. Sealing ring; 72. First sealing cylinder; 73. Second sealing cylinder; 81. Display screen; 83. Charging circuit board; 84. Mounting bracket. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0021] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] Explanation: Negative pressure is a relative concept defined relative to atmospheric pressure in the external environment. When the skin adsorption hole 202 is in contact with the skin and the negative pressure generating device 30 is not operating on the air in the air chamber 201, the air pressure in the air chamber 201 is basically equal to the atmospheric pressure in the external environment. When the negative pressure generating device 30 operates on the air in the air chamber 201, the air density in the air chamber 201 decreases, and the air pressure in the air chamber 201 decreases. At this time, the air pressure in the air chamber 201 is negative relative to the atmospheric pressure in the external environment.

[0024] like Figures 1 to 8 As shown, the skin elasticity detector provided in the embodiments of this application includes a housing 10, an adsorption unit 20, a negative pressure generating device 30, a main control circuit board 40, an optical detection assembly 50, and a light path forming mechanism 60. The adsorption unit 20 is disposed in the housing 10 and has an air cavity 201 and a skin adsorption hole 202. The air cavity 201 communicates with the skin adsorption hole 202. The negative pressure generating device 30 is disposed inside the housing 10. The air cavity 201 is connected to the negative pressure generating device 30 via a pipe 31. The main control circuit board 40 is disposed inside the housing 10 and electrically connected to the negative pressure generating device 30. The control button 41 of the main control circuit board 40 is exposed outside the housing 10 for user operation. The main control circuit board 40 controls the negative pressure generating device 30 to establish negative pressure in the air cavity 201 and then controls the negative pressure generating device 30 to release the negative pressure. Furthermore, the optical detection assembly 50 includes a light source 51 and a light receiver 52, both of which are electrically connected to the main control circuit board 40. A light path forming mechanism 60 is disposed within the air cavity 201 and located in the light propagation path between the light source 51 and the light receiver 52. The light path forming mechanism 60 is used to form a parallel light path from the light beam emitted by the light source 51 and guide it through the detection area of ​​the air cavity 201 to the light receiver 52. When the negative pressure generating device 30 establishes a negative pressure within the air cavity 201, the skin is attracted by the skin adsorption holes 202 and protrudes into the detection area of ​​the air cavity 201, blocking at least part of the parallel light path. When the negative pressure in the air cavity 201 is released, the skin elastically retracts to release the obstruction of the parallel light path. The main control circuit board 40 is configured to receive the detection signal from the light receiver 52 and output a skin elasticity indication signal.

[0025] The user uses the skin elasticity detector provided in the embodiments of this application to perform skin elasticity testing. The user places the skin adsorption hole 202 against the surface of the skin to be tested. By operating the main control circuit board 40, the main control circuit board 40 controls the light source 51 to emit a light beam. The light beam is propagated by the light path forming mechanism 60 to form a parallel light path, and the light path forming mechanism 60 guides the parallel light path to the light receiver 52. Simultaneously, the main control circuit board 40 controls the negative pressure generating device 30 to activate, thereby creating a negative pressure in the air cavity 201. When the air cavity 201 is under negative pressure, the skin to be tested deforms under the negative pressure and protrudes into the air cavity 201, blocking at least part of the parallel light path. Subsequently, the main control circuit board 40 controls the negative pressure generating device 30 to release the negative pressure in the air cavity 201. The elastically deformed skin gradually recovers under its own elasticity, that is, the skin elastically retracts to release the obstruction of the parallel light path. Thus, during the process from the skin's elastic deformation blocking at least part of the parallel light path to the skin's elastic retraction releasing the blockage, the light receiver 52 can detect the light signal of the parallel light path in real time and convert it into an electrical signal, transmitting it to the main control circuit board 40. The main control circuit board 40 then obtains the corresponding skin elasticity value E based on the detection signal and outputs a skin elasticity indication signal. Therefore, the user's operation of using this skin elasticity detector to test skin elasticity is not only simple and convenient, but the entire testing process is also painless and harmless to the skin, enhancing the user's experience when testing skin elasticity.

[0026] In some embodiments, the light signal of the parallel light path detected in real time by the light receiver 52 can be light intensity. When the parallel light path is not blocked by the skin, the initial light intensity of the parallel light path received by the light receiver 52 is the strongest. When the skin undergoes elastic deformation under negative pressure and bulges into the air cavity 201, blocking the parallel light path, the light intensity of the parallel light path received by the light receiver 52 decreases. The degree of light intensity reduction is related to the degree to which the parallel light path is blocked by the skin; that is, the greater the degree of skin blockage, the lower the light intensity. Furthermore, the skin needs a certain recovery time to gradually recover from its elastic deformation state, and the recovery time varies for skin with different elasticity values ​​(i.e., the elasticity values ​​of different users' skin are different, or the elasticity values ​​of different parts of the same user's skin are different). During the skin recovery process, the light intensity received by the light receiver 52 gradually increases until the skin is basically recovered, at which point the light intensity increases to approximately equal to the initial light intensity, or the light intensity recovers to a preset proportion of the initial light intensity. Thus, the main control circuit board 40 determines the corresponding skin elasticity value E based on the corresponding recovery time and outputs a skin elasticity indication signal for that skin elasticity value E. Among them, the optical receiver 52 is a photoelectric converter, such as a photodiode or photoresistor, which converts the value of the optical signal into the current value and / or voltage value directly output by the photoelectric converter.

[0027] In some embodiments, the optical signal of the parallel optical path detected in real time by the optical receiver 52 can be the spot area of ​​the parallel optical path. When the parallel optical path is not blocked by skin, the initial spot area of ​​the parallel optical path received by the optical receiver 52 is the largest, i.e., S. max When the skin undergoes elastic deformation under negative pressure and bulges into the air cavity 201, blocking the parallel light path, the area of ​​the light spot received by the light receiver 52 decreases. Furthermore, the greater the degree of obstruction of the parallel light path by the skin, the smaller the light spot area. At this point, the minimum light spot area S is obtained. min Furthermore, the skin requires a certain recovery time to gradually recover from its elastic deformation state, specifically the time from the start to the end of the recovery process (T2-T1). The recovery time varies depending on the skin's elasticity value (i.e., different users have different elasticity values, or different areas of the same user have different elasticity values). During the skin recovery process, the area of ​​the light spot received by the light receiver 52 gradually increases until the skin is basically recovered, at which point the light spot area is approximately equal to the initial light spot area, or the light spot area recovers to a preset proportion of the initial light spot area. Thus, the main control circuit board 40 determines the corresponding skin elasticity value E based on the corresponding recovery time, i.e., the main control circuit board 40 determines the value according to the formula... The skin elasticity value E is calculated, and a skin elasticity indicator signal of this value E is output. The light receiver 52 is an image sensor, such as CMOS or CCD. The value of the light signal is converted into feature parameters obtained through image processing after the image sensor acquires the light spot image, such as the total pixel area of ​​the light spot, average gray value, or center light intensity value.

[0028] The negative pressure generating device 30 of the skin elasticity detector can be an air pump. The air pump draws air out of the air chamber 201, reducing the air density in the air chamber 201 to establish negative pressure. When it is necessary to release the negative pressure in the air chamber 201, the air pump can be used to inflate the air chamber 201 until the air pressure in the air chamber 201 reaches the same level as the atmospheric pressure of the external environment. Alternatively, the air chamber 201 can be directly connected to the external environment.

[0029] In the skin elasticity tester of the embodiments of this application, such as Figure 7As shown, the adsorption unit 20 also has a first mounting cavity 203 and a second mounting cavity 204. A first optical path channel 205 is provided between the first mounting cavity 203 and the air cavity 201, and a second optical path channel 206 is provided between the second mounting cavity 204 and the air cavity 201. The light source 51 is disposed in the first mounting cavity 203, and the light receiver 52 is disposed in the second mounting cavity 204. When the main control circuit board 40 controls the optical detection component 50 to be powered on, the light beam emitted by the light source 51 illuminates the light path forming mechanism 60 located in the air cavity 201 through the first optical path channel 205. The light beam is guided by the light path forming mechanism 60 through the second optical path channel 206 to illuminate the light receiver 52. In this embodiment, the light source 51 and the light receiver 52 are respectively disposed in different chamber spaces of the adsorption unit 20. Therefore, the light beam emitted by the light source 51 will not interfere with each other during the process of propagating through the light path forming mechanism 60 and reaching the light receiver 52, which is beneficial to improving the accuracy of the light signal, thereby improving the detection accuracy of the skin elasticity value E.

[0030] Specifically, such as Figures 5 to 8 As shown, the adsorption unit 20 includes a first inner shell 21 and a second inner shell 22. The first inner shell 21 and the second inner shell 22 are installed inside the housing 10, and the first inner shell 21 and the second inner shell 22 are interlocked to form an air cavity 201. Furthermore, as... Figures 5 to 8 As shown, the insertion position between the first inner shell 21 and the second inner shell 22 is sealed by a sealing ring 71, so that the air chamber 201 is connected to the external environment only through the skin adsorption hole 202, in addition to being connected to the negative pressure generating device 30. Thus, when the skin adsorption hole 202 is in contact with the skin surface, the air chamber 201 forms an internal space independent of the external environment, allowing the negative pressure generating device 30 to manipulate the air within the air chamber 201, thereby establishing a negative pressure in the air chamber 201. Furthermore, after establishing a negative pressure in the air chamber 201, the negative pressure generating device 30 can continue to manipulate the air within the air chamber 201 to release the negative pressure.

[0031] In order to quickly relieve the negative pressure in the air chamber 201, such as Figure 5 and Figure 6 As shown, the skin elasticity tester also includes a solenoid valve 32, which is located inside the housing 10 and is installed on the pipeline 31 between the air chamber 201 and the negative pressure generating device 30. The solenoid valve 32 is electrically connected to the main control circuit board 40. Preferably, the solenoid valve 32 is a two-position three-way solenoid valve, wherein one port of the solenoid valve 32 is connected to the negative pressure generating device 30, the two port is directly connected to the external environment, and the three port is connected to the air chamber 201. Thus, when the negative pressure generating device 30 draws air out of the air chamber 201, the one port and the three port of the solenoid valve 32 are in the connected state; when it is necessary to release the negative pressure in the air chamber 201, the main control circuit board 40 controls the two port and the three port of the solenoid valve 32 to connect.

[0032] In some embodiments, such as Figures 4 to 8 As shown, the skin adsorption hole 202 may be located in the first inner shell 21, the first mounting cavity 203 and the first optical path channel 205 may be located in the second inner shell 22, and the second mounting cavity 204 and the second optical path channel 206 may be located in the second inner shell 22.

[0033] In some embodiments, the skin adsorption hole 202 may be located in the first inner shell 21, the first mounting cavity 203 and the first optical path channel 205 may be located in the second inner shell 22, and the second mounting cavity 204 and the second optical path channel 206 may be located in the first inner shell 21.

[0034] In some embodiments, the skin adsorption hole 202 may be located in the second inner shell 22, the first mounting cavity 203 and the first optical path channel 205 may both be located in the first inner shell, and the second mounting cavity 204 and the second optical path channel 206 may both be located in the first inner shell 21.

[0035] In some implementations, the skin adsorption hole 202 may be located in the second inner shell 22, the first mounting cavity 203 and the first optical path channel 205 may both be located in the first inner shell, and the second mounting cavity 204 and the second optical path channel 206 may both be located in the second inner shell 22.

[0036] The preferred design structure of the embodiments of this application is as follows: the skin adsorption hole 202 can be located in the first inner shell 21, the first mounting cavity 203, the second mounting cavity 204, the first optical path channel 205 and the second optical path channel 206 are all located in the second inner shell 22, and the optical detection component 50 is mounted on the side of the second inner shell 22 away from the first inner shell 21, the light source 51 extends into the first mounting cavity 203, and the light receiver 52 extends into the second mounting cavity 204. In this way, the assembly space of each component of the skin elasticity detector can be reasonably arranged, making the design structure more compact and conducive to miniaturization and optimization design.

[0037] Furthermore, such as Figures 5 to 8As shown, the optical path forming mechanism 60 includes a first reflecting mirror 61, a second reflecting mirror 62, a first condensing lens 63, and a second condensing lens 64. The first reflecting mirror 61 and the second reflecting mirror 62 are disposed in the air cavity 201 and located on either side of the skin adsorption hole 202. The first condensing lens 63 is disposed in the first optical path channel 205, and the second condensing lens 64 is disposed in the second optical path channel 206. The first reflecting mirror 61 and the first condensing lens 63 are positioned opposite each other, and the second reflecting mirror 62 and the second condensing lens 64 are positioned opposite each other. Thus, when the main control circuit board 40 controls the light source 51 to be powered on and emit a light beam, the light beam is first focused and transmitted into parallel light by the first condenser lens 63 and then illuminates the first reflector 61. That is, the first condenser lens 63 is used to collimate the light beam emitted by the light source 51 into parallel light and direct it toward the first reflector 61. Then, the first reflector 61 reflects the parallel light to the second reflector 62. That is, the first reflector 61 is used to reflect the light beam from the first condenser lens 63 to the second reflector 62. The space between the first reflector 61 and the second reflector 62 corresponds to the space of the skin adsorption hole 202. A parallel beam required for detection is formed. Then, the second reflecting mirror 62 reflects the parallel beam to the second condenser lens 64. That is, the second reflecting mirror 62 is used to reflect the received beam to the second condenser lens 64. The second condenser lens 64 focuses and transmits the parallel beam. That is, the second condenser lens 64 is used to receive the beam reflected by the second reflecting mirror 62. The beam transmitted from the second condenser lens 64 reaches the light receiver 52. This helps to reduce the light loss of the parallel beam during the reflection and propagation process, thereby improving the light signal reception effect and improving the accuracy of detecting the skin elasticity value E.

[0038] In order to establish negative pressure in air chamber 201 more quickly, such as Figures 5 to 8As shown, the skin elasticity detector also includes a first sealing cylinder 72 and a second sealing cylinder 73. The hole wall of the first optical path channel 205 is provided with a continuous first rib 207 protruding in the circumferential direction, and the hole wall of the second optical path channel 206 is provided with a continuous second rib 208 protruding in the circumferential direction. The first sealing cylinder 72 is disposed in the first optical path channel 205. The first sealing cylinder 72 and the first rib 207 clamp and fix the first condensing lens 63 to seal and separate the air cavity 201 and the first mounting cavity 203. The second sealing cylinder 73 is disposed in the second optical path channel 206. The second sealing cylinder 73 and the second rib 208 clamp and fix the second condensing lens 64 to seal and separate the air cavity 201 and the second mounting cavity 204. This design ensures that the air chamber 201 is independently separated from the first mounting chamber 203 and the second mounting chamber 204. When the negative pressure generating device 30 operates the air in the air chamber 201 to establish negative pressure, the air in the first mounting chamber 203 and the second mounting chamber 204 will not be refilled into the air chamber 201. That is, the total amount of air that needs to be operated by the negative pressure generating device 30 to establish negative pressure in the air chamber 201 is reduced, thus achieving the goal of establishing negative pressure in the air chamber 201 more quickly. Furthermore, the first sealing cylinder 72 and the first rib 207 clamp and fix the first condensing lens 63, which helps to improve the assembly stability of the first condensing lens 63. Similarly, the second sealing cylinder 73 and the second rib 208 clamp and fix the second condensing lens 64, which helps to improve the assembly stability of the second condensing lens 64.

[0039] like Figures 1 to 6 , Figure 8 As shown, the skin elasticity tester also includes a display screen 81, which is mounted on the housing 10 via a mounting bracket 84. The display screen 81 is electrically connected to the main control circuit board 40 and is used to display the skin elasticity indicator signal output by the main control circuit board 40. In other words, the display screen 81 directly displays the detected skin elasticity value E, which the user can directly read and understand on-site.

[0040] like Figures 5 to 7 As shown, the skin elasticity tester also includes a battery and a charging circuit board 83. Both the battery and the charging circuit board 83 are housed within the housing 10. The charging circuit board 83 is electrically connected to the battery, and the battery is electrically connected to the main control circuit board 40. The battery provides power to all electrical components, making it convenient for users to use and carry, especially suitable for users to take during travel. Moreover, users can easily charge the device.

[0041] Some embodiments of this application provide a skin elasticity detector with an integral structure, i.e., the housing 10 is a single unit. That is, components such as the adsorption unit 20, negative pressure generating device 30, solenoid valve 32, main control circuit board 40, optical detection assembly 50, light path forming mechanism 60, display screen 81, battery, and charging circuit board 83 are integrated and assembled in the housing 10 to form an integral structure.

[0042] Other embodiments of this application provide a skin elasticity testing device that can be a split-structure device, such as... Figures 1 to 6 , Figure 8 As shown, the housing 10 includes a first outer shell 11 and a second outer shell 12 that can be independently separated from each other. In this embodiment, the negative pressure generating device 30, the solenoid valve 32, the battery, and the charging circuit board 83 are disposed inside the first outer shell 11, while the main control circuit board 40, the display screen 81, the adsorption part 20 (first inner shell 21 and second inner shell 22), the optical detection component 50, the light path forming mechanism 60, and the display screen 81 are all disposed inside the second outer shell 12. The control buttons 41 of the main control circuit board 40 are exposed outside the second outer shell 12 for user operation. Figures 5 to 8 As shown, the second inner shell 22 is provided with a pipe connector 23 communicating with the air chamber 201. The pipe connector 23 is connected to the negative pressure generating device 30 through a pipe 31. Furthermore, the connecting wires between the main control circuit board 40 and the negative pressure generating device 30, and the connecting wires between the main control circuit board 40 and the battery, are all arranged parallel to the pipe 31. For example... Figures 4 to 6 , Figure 8 As shown, the first outer casing 11 includes a first main casing 13 and a first casing cover 14. The first main casing 13 and the first casing cover 14 are fitted together to form an assembly space for accommodating the negative pressure generating device 30, the solenoid valve 32, the battery, and the charging circuit board 83. Furthermore, as... Figures 4 to 6 , Figure 8 As shown, the second outer casing 12 includes a second main casing 15 and a second cover 16. The second main casing 15 and the second cover 16 are fitted together to form an assembly space for accommodating the main control circuit board 40, the display screen 81, the adsorption unit 20 (the first inner casing 21 and the second inner casing 22), the optical detection assembly 50, the light path forming mechanism 60, and the display screen 81. When the user performs skin elasticity testing, the user only needs to grasp the second outer casing 12 to make the skin adsorption hole 202 fit against the skin surface, and then operate the control button 41, making the operation more convenient.

[0043] like Figure 1 , Figures 3 to 6 , Figure 8As shown, the first outer casing 11 is provided with a storage slot 17, the spatial shape of which is adapted to the outline shape of the second outer casing 12 to accommodate the second outer casing 12. That is, when the skin elasticity tester is not in use, the user places the second outer casing 12 into the storage slot 17, so that the first outer casing 11 and the second outer casing 12 are combined into a whole, thereby reducing the space required to place the skin elasticity tester and making it convenient for the user to carry the skin elasticity tester.

[0044] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A skin elasticity testing instrument, characterized in that, include: case; An adsorption section is provided in the housing, the adsorption section having an air cavity and a skin adsorption hole, the air cavity being in communication with the skin adsorption hole; A negative pressure generating device is disposed inside the housing. The air chamber is connected to the negative pressure generating device via a pipeline. The negative pressure generating device is used to establish a negative pressure in the air chamber and then release the negative pressure. The main control circuit board is located inside the housing and is electrically connected to the negative pressure generating device; An optical detection component includes a light source and a light receiver, both of which are electrically connected to the main control circuit board; An optical path forming mechanism is disposed within the air cavity and located in the light propagation path between the light source and the light receiver. The optical path forming mechanism is used to form a parallel optical path for the light beam emitted by the light source and guide it through the detection area of ​​the air cavity to reach the light receiver. When the negative pressure generating device establishes negative pressure in the air cavity, the skin is adsorbed by the skin adsorption holes and protrudes into the detection area of ​​the air cavity, blocking at least part of the parallel light path; when the negative pressure in the air cavity is released, the skin elastically retracts to release the obstruction of the parallel light path. The main control circuit board is configured to receive the detection signal from the light receiver and output a skin elasticity indication signal.

2. The skin elasticity testing instrument according to claim 1, characterized in that, The adsorption unit also has a first mounting cavity and a second mounting cavity. A first optical path channel is provided between the first mounting cavity and the air cavity, and a second optical path channel is provided between the second mounting cavity and the air cavity. The light source is located in the first mounting cavity, and the light receiver is located in the second mounting cavity. The light beam emitted by the light source illuminates the light path forming mechanism located in the air cavity through the first optical path channel, and is guided by the light path forming mechanism through the second optical path channel to illuminate the light receiver.

3. The skin elasticity testing instrument according to claim 2, characterized in that, The adsorption unit includes a first inner shell and a second inner shell, which are installed inside the housing and are interlocked to form the air cavity. The skin adsorption hole is located in one of the first inner shell and the second inner shell, and the first mounting cavity and the first optical path channel are both located in the other of the first inner shell and the second inner shell. Furthermore, the second mounting cavity and the second optical path channel are both located in one of the first inner shell and the second inner shell.

4. The skin elasticity tester according to claim 3, characterized in that, The first mounting cavity, the second mounting cavity, the first optical path channel, and the second optical path channel are all located in the first inner shell or the second inner shell; The optical path forming mechanism includes a first reflecting mirror, a second reflecting mirror, a first condensing lens, and a second condensing lens. The first reflecting mirror and the second reflecting mirror are disposed in the air cavity and located on both sides of the skin adsorption hole. The first condenser lens is disposed in the first optical path channel, and the first condenser lens is used to collimate the light beam emitted by the light source into parallel light and direct it toward the first reflector; The first reflector is used to reflect the light beam from the first condenser lens to the second reflector; The second reflector is used to reflect the received light beam to the second condenser lens; The second condenser lens is disposed in the second optical path channel, and the second condenser lens is used to receive the light beam reflected by the second reflector.

5. The skin elasticity tester according to claim 4, characterized in that, The insertion position between the first inner shell and the second inner shell is sealed by a sealing ring; The skin elasticity detector further includes a first sealing cylinder and a second sealing cylinder. The wall of the first optical path channel protrudes circumferentially to form a continuous first rib, and the wall of the second optical path channel protrudes circumferentially to form a continuous second rib. The first sealing cylinder is disposed in the first optical path channel. The first sealing cylinder and the first rib clamp and fix the first condensing lens to seal and separate the air cavity from the first mounting cavity. The second sealing cylinder is disposed in the second optical path channel. The second sealing cylinder and the second rib clamp and fix the second condensing lens to seal and separate the air cavity from the second mounting cavity.

6. The skin elasticity tester according to claim 5, characterized in that, The skin elasticity detector also includes a display screen, which is mounted on the housing and electrically connected to the main control circuit board. The display screen is used to display the skin elasticity indication signal output by the main control circuit board.

7. The skin elasticity tester according to claim 6, characterized in that, The housing includes a first outer shell and a second outer shell that can be independently separated from each other. The negative pressure generating device is disposed inside the first outer shell. The main control circuit board, the display screen, the first inner shell, and the second inner shell are all disposed inside the second outer shell. The first inner shell or the second inner shell is provided with a pipe joint that communicates with the air chamber. The pipe joint is connected to the negative pressure generating device through the pipeline. Furthermore, the connecting wire between the main control circuit board and the negative pressure generating device is arranged in parallel with the pipeline.

8. The skin elasticity tester according to claim 7, characterized in that, The first outer shell is provided with a storage slot, the spatial shape of which is adapted to the outline shape of the second outer shell to store the second outer shell.

9. The skin elasticity testing instrument according to any one of claims 1-8, characterized in that, The skin elasticity tester also includes a solenoid valve, which is located inside the housing and is disposed on the pipeline between the air chamber and the negative pressure generating device. The solenoid valve is electrically connected to the main control circuit board.

10. The skin elasticity testing instrument according to any one of claims 1-8, characterized in that, The skin elasticity detector also includes a battery and a charging circuit board. The battery and the charging circuit board are both located inside the housing. The charging circuit board is electrically connected to the battery, and the battery is electrically connected to the main control circuit board.

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