Skin tension measuring instrument
By designing a skin tension measuring instrument that uses negative pressure to adsorb the skin and photographs the distance the graduated pin moves, the problem of inaccurate skin tension measurement in existing technologies has been solved, achieving scientific skin tension measurement and improvement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2026-03-27
AI Technical Summary
Current technology cannot accurately measure skin tension and relies mainly on empirical assessment, which cannot provide scientific evidence.
A skin tension measuring instrument was designed, including a suction nozzle, a needle holder, a graduated needle, a camera device, and a negative pressure generating device. The instrument uses negative pressure to adsorb the skin and the camera device to capture the movement distance of the graduated needle, thereby achieving accurate measurement of skin tension.
It enables accurate measurement of skin tension, providing a scientific basis for skin research and improvement. It has a simple structure, is easy to operate, and reduces the risk of perspective distortion and seal failure.
Smart Images
Figure CN224039199U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of tension measurement, in particular to a skin tension measuring instrument. BACKGROUND
[0002] The skin will be elastically deformed under external force, and the elastic deformation is affected by the skin tension, the external force and the force mode. Under the same external force and the same force mode, the elastic deformation of the skin is mainly determined by the size of the skin tension.
[0003] It is particularly important to master the size of the skin tension and the change of the skin tension and take corresponding measures to improve the skin tension. However, at present, people can only pinch the skin with fingers to feel and evaluate the skin tension by experience, and the skin tension cannot be accurately obtained. CONTENT OF THE INVENTION
[0004] Therefore, the present application provides a skin tension measuring instrument to solve the problem that the skin tension cannot be accurately obtained.
[0005] The first aspect of the present application provides a skin tension measuring instrument, comprising a shell, a suction nozzle, a needle holder, a scale needle, a camera device and a negative pressure generating device, the suction nozzle is arranged outside the shell and is used to tightly adhere to the skin surface, the suction nozzle has an inner cavity; the needle holder is arranged inside the shell, the needle holder has a negative pressure cavity which is communicated with the inner cavity, the scale needle is movably installed in the negative pressure cavity along the axial direction, and the first end of the scale needle extends into the inner cavity; the needle holder comprises a transparent window, the camera device is arranged inside the shell and shoots the scale on the scale needle through the transparent window; the negative pressure generating device is arranged inside the shell and connected with the needle holder.
[0006] The skin tension measuring instrument provided by the present application has the following beneficial effects: when measuring, the suction nozzle is tightly adhered to the skin surface, then the negative pressure generating device generates negative pressure, the negative pressure is transmitted to the inner cavity of the suction nozzle through the negative pressure cavity; under the negative pressure, the skin covered by the suction nozzle gradually enters the inner cavity of the suction nozzle, and the skin will push the scale needle to move in the negative pressure cavity, the camera device shoots the moving distance of the scale needle through the transparent window in this process, so that the elastic deformation of the skin is accurately obtained, and the accurate measurement of the skin tension is realized, which provides a scientific basis for the research and improvement of the skin. Moreover, the skin tension measuring instrument has simple structure and is convenient to operate.
[0007] In some embodiments, the inner wall of the shell is provided with a recess at the position corresponding to the transparent window, and the camera device is arranged in the recess.
[0008] The beneficial effects of the above technical solutions are that the camera is in the recess, the distance between the camera and the scale stylus can be increased, the lens viewing angle can be ensured to be large enough, and perspective distortion can be reduced.
[0009] In some embodiments, the end surface of the first end of the scale stylus is a curved surface.
[0010] The beneficial effects of the above technical solutions are that the curved surface has no corners, and the comfort of the skin pushing the scale stylus can be improved.
[0011] In some embodiments, the scale stylus is provided with a limiting piece, the negative pressure cavity includes a movable cavity section, the movable cavity section is used for the axial movement of the limiting piece along the scale stylus, the movable cavity section has a first end surface close to the suction nozzle and a second end surface away from the suction nozzle, and the first end surface is in limiting cooperation with the limiting piece.
[0012] The beneficial effects of the above technical solutions are that the first end surface is in limiting cooperation with the limiting piece to prevent the scale stylus from being pulled out of the stylus seat.
[0013] In some embodiments, the skin tension measuring instrument further includes an elastic piece arranged in the movable cavity section, one end of the elastic piece abuts against the limiting piece, and the other end of the elastic piece abuts against the second end surface.
[0014] The beneficial effects of the above technical solutions are that after the measurement is completed, the suction nozzle is separated from the skin, and the scale stylus can be automatically reset under the action of the elastic piece, so as to facilitate the next measurement.
[0015] In some embodiments, the suction nozzle is a transparent suction nozzle.
[0016] The beneficial effects of the above technical solutions are that the human eye can be used to observe whether the skin is stretched and the stretching degree.
[0017] In some embodiments, the stylus seat is fixed in the shell, and the suction nozzle is fixed on the stylus seat.
[0018] The beneficial effects of the above technical solutions are that by fixing the suction nozzle on the stylus seat, only a seal needs to be arranged between the suction nozzle and the stylus seat, the sealing position is reduced, and the risk of seal failure is reduced.
[0019] In some embodiments, the outer wall surface of the first end of the stylus seat is provided with a sealing groove, the skin tension measuring instrument further includes a sealing ring arranged in the sealing groove, and the suction nozzle is interference-fitted on the first end of the stylus seat.
[0020] The beneficial effects of the above technical scheme are that the sealing ring can realize the sealing between the suction nozzle and the ejector pin seat, and can realize the installation of the suction nozzle through interference fit with the suction nozzle, which is beneficial to the replacement of the suction nozzle in the later period.
[0021] In some embodiments, the skin tension measuring instrument further comprises a power storage component arranged in the housing.
[0022] The beneficial effects of the above technical scheme are that the skin tension measuring instrument can work without connecting to an external power supply through a power cord, which reduces the interference of the power cord in the measurement process, and is beneficial to the measurement of the skin tension measuring instrument.
[0023] In some embodiments, the negative pressure generating device is an electric vacuum pump.
[0024] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following specific embodiments of the present application are described. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical scheme in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or conventional technology description, obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.
[0026] Figure 1 is a structural schematic diagram of the skin tension measuring instrument provided by some embodiments of the present application;
[0027] Figure 2 is Figure 1 is an exploded view of the skin tension measuring instrument shown in the figure;
[0028] Figure 3 is Figure 1 is a sectional view of the skin tension measuring instrument shown in the figure;
[0029] Figure 4 is Figure 3 is an enlarged view of the skin tension measuring instrument at A shown in the figure;
[0030] Figure 5 is Figure 4 is a structural schematic diagram of the scale ejector pin.
[0031] The meanings of the marks in the figure are:
[0032] 10, skin tension measuring instrument;
[0033] 11, housing; 111, recess; 112, clamping portion;
[0034] 12, suction nozzle; 121, inner cavity;
[0035] 13, needle seat; 131, negative pressure cavity; 1311, movable cavity section; 13111, first end face; 13112, second end face; 132, transparent window; 133, sealing groove; 1331, sealing ring; 134, clamping groove;
[0036] 14, scale needle; 141, scale; 142, ball head; 143, limiting piece; 1431, connecting block; 1432, negative pressure passage;
[0037] 15, camera device;
[0038] 16, negative pressure generating device; 161, negative pressure pipeline;
[0039] 17, elastic member;
[0040] 18, power storage member;
[0041] 19, control board; 191, switch button. DETAILED DESCRIPTION
[0042] The embodiments of the technical scheme of the present application will be described in detail below with reference to the drawings. The following embodiments are only used to more clearly illustrate the technical scheme of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.
[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion.
[0044] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified.
[0045] Reference to "an embodiment" or "the embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in one embodiment" or "in another embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to a particular previously described embodiment. It is explicitly contemplated that embodiments described herein can be combined with each other in their individual aspects.
[0046] In the description of the embodiments of the application, the term "and / or" is merely an association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are a "or" relationship.
[0047] In the description of the embodiments of the application, the term "a plurality of" refers to more than two (including two), and similarly, "a plurality of groups" refers to more than two groups (including two groups), and "a plurality of pieces" refers to more than two pieces (including two pieces).
[0048] In the description of the embodiments of the application, the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the application.
[0049] In the description of the embodiments of the application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the application can be understood according to the specific circumstances.
[0050] The embodiments of the first aspect of the application propose a skin tension measuring instrument. Please refer to Figure 1 and Figure 3The skin tension measuring instrument 10 comprises a shell 11, a suction nozzle 12, a needle seat 13, a scale needle 14, a camera 15 and a negative pressure generating device 16. The suction nozzle 12 is arranged outside the shell 11 and is used to adhere to the skin surface. The suction nozzle 12 has an inner cavity 121. The needle seat 13 is arranged inside the shell 11. The needle seat 13 has a negative pressure cavity 131 which is in communication with the inner cavity 121. The scale needle 14 is movably arranged in the negative pressure cavity 131 along the axial direction of the scale needle 14. The first end of the scale needle 14 extends into the inner cavity 121. The needle seat 13 comprises a transparent window 132. The camera 15 is arranged inside the shell 11 and photographs the scale 141 on the scale needle 14 through the transparent window 132. The negative pressure generating device 16 is arranged inside the shell 11 and is connected with the needle seat 13.
[0051] The outside of the shell 11 is used to mount the suction nozzle 12. The inside of the shell 11 is used to mount the needle seat 13, the camera 15 and the negative pressure generating device 16. Optionally, the shell 11 has a two-half structure so as to facilitate the mounting of the needle seat 13, the camera 15 and the negative pressure generating device 16 inside the shell 11.
[0052] The suction nozzle 12 is arranged outside the shell 11. It can be understood that the suction nozzle 12 can be fixed on the shell 11 or the needle seat 13. Optionally, the suction nozzle 12 is made of soft material, for example, plastic, silica gel, rubber and the like.
[0053] The shape of the suction nozzle 12 is not limited in the present application, as long as the inner cavity 121 can be formed. For example, the suction nozzle 12 can be a whole conical structure or a straight cylinder structure. The suction nozzle 12 can also comprise a conical section and a straight cylinder section. The cross section of the suction nozzle 12 can be circular, elliptical, polygonal or the like.
[0054] The needle seat 13 is arranged inside the shell 11. It can be understood that the needle seat 13 can be fixed inside the shell 11 by means of clamping, threaded connection, adhesion, fastener connection, interference fit and the like.
[0055] The needle seat 13 has the negative pressure cavity 131 which is in communication with the inner cavity 121. Optionally, the negative pressure cavity 131 extends along the axial direction of the scale needle 14. The scale needle 14 is movably arranged in the negative pressure cavity 131 along the axial direction of the scale needle 14. It can be understood that there is a gap between the scale needle 14 and the cavity wall of the negative pressure cavity 131 in the radial direction of the scale needle 14, so as to ensure that the negative pressure generated by the negative pressure generating device 16 can be transmitted to the inner cavity 121 of the suction nozzle 12 through the negative pressure cavity 131.
[0056] The first end of the scale stylus 14 extends into the inner cavity 121, and optionally, the first end of the scale stylus 14 is flush with the end of the suction nozzle 12 to adapt to the case where the skin surface is flat. Of course, the first end of the scale stylus 14 can also be sunken into the suction nozzle 12 to adapt to the case where the skin surface is curved. The first end of the scale stylus 14 is the end of the scale stylus 14 close to the suction nozzle 12.
[0057] The stylus seat 13 comprises a transparent window 132. It can be understood that the stylus seat 13 is made of a transparent material, and the transparent window 132 is formed by thinning the side wall of the stylus seat 13; or the side wall of the stylus seat 13 is provided with a notch, and the transparent window 132 is installed at the notch. The transparent window 132 can be a transparent plastic window or a transparent glass window.
[0058] The shape of the transparent window 132 is not limited in the present application, as long as the camera 15 can shoot the scale 141 on the scale stylus 14; for example, the shape of the transparent window 132 can be circular, oval, polygonal, etc.
[0059] The camera 15 is arranged inside the shell 11. It can be understood that the camera 15 can be fixed inside the shell 11 by means of adhesion, fastener connection, clamping, etc., such as on the inner wall of the shell 11 or a support inside the shell 11. Optionally, the camera 15 is a camera.
[0060] The camera 15 shoots the scale 141 on the scale stylus 14 through the transparent window 132. It can be understood that the camera 15 is arranged opposite to the transparent window 132, i.e. the transparent window 132 is between the camera 15 and the scale stylus 14.
[0061] The negative pressure generating device 16 is connected with the stylus seat 13. It can be understood that the negative pressure generating device 16 can be connected with the stylus seat 13 through a negative pressure pipeline 161, or the negative pressure generating device 16 can be directly connected with the stylus seat 13. Optionally, the negative pressure generating device 16 is an electric vacuum pump.
[0062] The skin tension measuring instrument 10 provided by the embodiments of the present application has the following beneficial effects: during measurement, the suction nozzle 12 is attached to the skin surface, and then the negative pressure generating device 16 generates negative pressure, which is transmitted to the inner cavity 121 of the suction nozzle 12 through the negative pressure cavity 131; under the negative pressure, the skin covered by the suction nozzle 12 gradually enters the inner cavity 121 of the suction nozzle 12, and at the same time, the skin pushes the scale stylus 14 to move in the negative pressure cavity 131; during the process, the camera 15 shoots the moving distance of the scale stylus 14 through the transparent window 132 to accurately obtain the elastic deformation of the skin, and thus accurately measure the skin tension, thereby providing a scientific basis for the research and improvement of the skin. Moreover, the skin tension measuring instrument 10 has a simple structure and is easy to operate.
[0063] Please refer to Figure 3 and Figure 4 In some embodiments, the inner wall of the shell 11 is provided with a recess 111 corresponding to the position of the transparent window 132, and the camera 15 is located in the recess 111.
[0064] Optionally, the recess 111 is in the shape of a hook.
[0065] Based on the above scheme, the camera 15 is located in the recess 111, which can increase the distance between the camera 15 and the scale stylus 14, so as to not only ensure a large enough lens view angle, but also reduce perspective distortion. At the same time, the overall size of the shell 11 is small, which is convenient for hand holding.
[0066] In other embodiments, the overall size of the shell 11 can be designed to be larger, so that even if the recess 111 is not provided on the inner wall of the shell 11, the distance between the camera 15 and the scale stylus 14 can be increased, the lens view angle can be ensured to be large enough, and the perspective distortion can be reduced.
[0067] Please refer to Figure 4 In some embodiments, the end face of the first end of the scale stylus 14 is a curved surface.
[0068] It can be understood that the curved surface can be a spherical surface, an ellipsoidal surface, and other irregular curved surfaces, etc.
[0069] When the curved surface is a spherical surface, the scale stylus 14 can optionally include a stylus body and a ball head 142 provided on the stylus body, and the spherical surface of the ball head 142 constitutes the end face of the first end of the scale stylus 14; wherein the ball head 142 can be integrally formed with the stylus body, or can be fixed on the stylus body by means of clamping, bonding, threaded connection, interference connection, etc. Of course, the end face of the first end of the scale stylus 14 can also be a hemispherical surface, wherein the diameter of the hemispherical surface can be the same as the diameter of the stylus body, or can be different.
[0070] Based on the above technical scheme, since the curved surface has no corners, the comfort when the skin pushes the scale stylus 14 can be improved.
[0071] In other embodiments, the end face of the first end of the scale stylus 14 can also be a flat surface, and a chamfer can be made on the edge to reduce discomfort.
[0072] Please refer to Figure 4 In some embodiments, the scale stylus 14 is provided with a limiting piece 143, and the negative pressure cavity 131 includes a movable cavity section 1311, the movable cavity section 1311 is used for the limiting piece 143 to move along the axial direction of the scale stylus 14, the movable cavity section 1311 has a first end face 13111 close to the suction nozzle 12 and a second end face 13112 away from the suction nozzle 12, and the first end face 13111 is in limiting cooperation with the limiting piece 143.
[0073] It can be understood that the limiting member 143 can be a limiting ring, or the limiting member 143 can include a plurality of limiting blocks arranged along the circumference of the scale stylus 14, wherein a negative pressure channel is formed between adjacent two limiting blocks to realize the transmission of negative pressure to the inner cavity 121. When the limiting member 143 is a limiting ring, as shown in the figure, a plurality of connecting blocks 1431 are arranged on the inner wall surface of the limiting member 143, and the limiting member 143 is fixed on the scale stylus 14 through the plurality of connecting blocks 1431, wherein a negative pressure channel 1432 is formed between adjacent two connecting blocks 1431 to realize the transmission of negative pressure to the inner cavity 121. Figure 5
[0074] The movable cavity section 1311 has a first end surface 13111 close to the suction nozzle 12 and a second end surface 13112 away from the suction nozzle 12, which can be understood as that the first end surface 13111 and the second end surface 13112 are arranged in the axial direction of the scale stylus 14. Optionally, the first end surface 13111 is a stepped surface, and the second end surface 13112 is a conical surface.
[0075] Based on the above scheme, the first end surface 13111 is limited and matched with the limiting member 143 to prevent the scale stylus 14 from being pulled out of the stylus seat 13.
[0076] In other embodiments, the limiting member 143 can not be provided, and a damping structure can be arranged between the scale stylus 14 and the cavity wall of the negative pressure cavity 131, so that the scale stylus 14 is not easy to be pulled out of the stylus seat 13.
[0077] Please refer to Figure 4 In some embodiments, the skin tension measuring instrument 10 further includes an elastic member 17 arranged in the movable cavity section 1311, one end of the elastic member 17 abuts against the limiting member 143, and the other end of the elastic member 17 abuts against the second end surface 13112.
[0078] Optionally, the elastic member 17 is a spring. Of course, the elastic member 17 can also be a rubber member with high elasticity.
[0079] Based on the above scheme, the elastic member 17 can ensure that the first end of the scale stylus 14 is always in contact with the skin during the measurement process, ensuring the accuracy of the measurement result; after the measurement is completed, the suction nozzle 12 is separated from the skin, and the scale stylus 14 can be automatically reset under the action of the elastic member 17, so as to facilitate the next measurement.
[0080] In other embodiments, the elastic member 17 can not be provided, and it is manually reset before the next measurement. In order to ensure that the first end of the scale stylus 14 is always in contact with the skin during the measurement process, a damping structure can be arranged between the scale stylus 14 and the cavity wall of the negative pressure cavity 131.
[0081] In some embodiments, the suction nozzle 12 is a transparent suction nozzle.
[0082] Optionally, the suction nozzle 12 is a plastic suction nozzle made of transparent plastic. Of course, the suction nozzle 12 can also be a rubber suction nozzle made of transparent rubber.
[0083] Based on the above scheme, the human eye can be used to observe whether the skin is stretched and the degree of stretching.
[0084] In other embodiments, the suction nozzle 12 can be an opaque suction nozzle, for example, the suction nozzle 12 can be a plastic suction nozzle made of opaque plastic, or a rubber suction nozzle made of opaque rubber.
[0085] Please refer to Figure 2 and Figure 4 In some embodiments, the needle holder 13 is fixed in the shell 11, and the suction nozzle 12 is fixed on the needle holder 13.
[0086] Optionally, the needle holder 13 is provided with a clamping groove 134, and the two half-shells of the shell 11 are respectively provided with clamping portions 112. When the two half-shells of the shell 11 are buckled together, the clamping portions 112 are clamped in the clamping groove 134, so as to fix the needle holder 13 in the shell 11. Among them, the clamping groove 134 is an annular clamping groove, and the clamping portion 112 is a semi-annular clamping portion.
[0087] Based on the above scheme, by fixing the suction nozzle 12 on the needle holder 13, only the sealing between the suction nozzle 12 and the needle holder 13 needs to be set, which reduces the sealing position and reduces the risk of sealing failure.
[0088] In other embodiments, the needle holder 13 is fixed in the shell 11, and the suction nozzle 12 is fixed outside the shell 11. At this time, the needle holder 13 and the shell 11 need to be sealed, and the suction nozzle 12 and the shell 11 also need to be sealed.
[0089] Please refer to Figure 4 In some embodiments, the outer wall surface of the first end of the needle holder 13 is provided with a sealing groove 133, and the skin tension measuring instrument 10 further comprises a sealing ring 1331 arranged in the sealing groove 133, and the suction nozzle 12 is interference fitted on the first end of the needle holder 13.
[0090] Among them, the first end of the needle holder 13 is the end of the needle holder 13 close to the suction nozzle 12.
[0091] Optionally, the sealing groove 133 can be provided with one or more. When the sealing groove 133 is provided with multiple, the multiple sealing grooves 133 are arranged in the axial direction of the needle holder 13; optionally, the sealing groove 133 is provided with two.
[0092] Among them, the number of sealing rings 1331 can be equal to or less than the number of sealing grooves 133.
[0093] The suction nozzle 12 is interference fitted at the first end of the ejector pin seat 13, that is, the suction nozzle 12 is sleeved on the first end of the ejector pin seat 13, and the sealing ring 1331 is between the ejector pin seat 13 and the suction nozzle 12.
[0094] According to the above technical scheme, the sealing ring 1331 can realize the sealing between the suction nozzle 12 and the ejector pin seat 13, and can realize the installation of the suction nozzle 12 through interference fitting with the suction nozzle 12, which is beneficial to the later replacement of the suction nozzle 12.
[0095] In other embodiments, the sealing groove 133 and the sealing ring 1331 can not be provided, the suction nozzle 12 is fixed on the first end of the ejector pin seat 13 through sealing glue, or the suction nozzle 12 is a rubber suction nozzle, and the suction nozzle 12 is fixed on the first end of the ejector pin seat 13 through a clamp.
[0096] Please refer to Figure 2 and Figure 3 In some embodiments, the skin tension measuring instrument 10 further comprises a power storage part 18 arranged in the shell 11.
[0097] The power storage part 18 is used to supply power to the power consuming components of the skin tension measuring instrument 10, such as the camera 15, the control board 19, and the negative pressure generating device 16.
[0098] Optionally, the power storage part 18 is an energy storage battery.
[0099] The power storage part 18 can be replaced or charged.
[0100] According to the above scheme, the skin tension measuring instrument 10 can work without connecting to an external power supply through a power line, which reduces the interference of the power line during the measurement process and is beneficial to the measurement of the skin tension measuring instrument 10.
[0101] In other embodiments, the power storage part 18 can not be provided, and a power line is provided, and the skin tension measuring instrument 10 works by connecting to an external power supply through the power line. Alternatively, in the case where the power storage part 18 is provided, the skin tension measuring instrument 10 is also provided with a power line, and when the power storage part 18 is out of power, the skin tension measuring instrument 10 can work by connecting to an external power supply through the power line, and the power storage part 18 can be charged.
[0102] In some embodiments, the skin tension measuring instrument 10 further comprises a control board 19 arranged in the shell 11, and the control board 19 is provided with a switch button 191.
[0103] Optionally, the control board 19 and the power storage part 18 are arranged in the thickness direction of the control board 19, and the control board 19 is above the power storage part 18.
[0104] Optionally, in the length direction of the control plate 19, the control plate 19 is between the needle holder 13 and the negative pressure generating device 16.
[0105] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.
Claims
1. A dermal tension meter characterized by: The skin tension measuring instrument comprises a shell, a suction nozzle, a needle seat, a scale needle, a camera device and a negative pressure generating device, the suction nozzle is arranged outside the shell and is used for being attached to a skin surface, the suction nozzle has an inner cavity, the needle seat is arranged inside the shell, the needle seat has a negative pressure cavity which is communicated with the inner cavity, the scale needle is movably arranged in the negative pressure cavity in an axial direction, and a first end of the scale needle extends into the inner cavity, the needle seat comprises a transparent window, the camera device is arranged inside the shell and photographs scales on the scale needle through the transparent window, and the negative pressure generating device is arranged inside the shell and is connected with the needle seat.
2. The skin tension meter of claim 1, wherein: A concave part is arranged on an inner wall of the shell at a position corresponding to the transparent window, and the camera device is arranged in the concave part.
3. The skin tension meter of claim 1, wherein: An end surface of the first end of the scale needle is a curved surface.
4. The skin tension meter of claim 1, wherein: A limiting part is arranged on the scale needle, the negative pressure cavity comprises a movable cavity section, the movable cavity section is used for allowing the limiting part to move in the axial direction of the scale needle, the movable cavity section has a first end surface close to the suction nozzle and a second end surface away from the suction nozzle, and the first end surface is limitedly matched with the limiting part.
5. The skin tension meter of claim 4, wherein: The skin tension measuring instrument further comprises an elastic part arranged in the movable cavity section, one end of the elastic part abuts against the limiting part, and the other end of the elastic part abuts against the second end surface.
6. The dermal tension meter of any one of claims 1-5, wherein: The suction nozzle is a transparent suction nozzle.
7. The dermal tension meter of any one of claims 1-5, wherein: The needle seat is fixed on the shell, and the suction nozzle is fixed on the needle seat.
8. The skin tension meter of claim 7, wherein: A sealing groove is arranged on an outer wall surface of the first end of the needle seat, the skin tension measuring instrument further comprises a sealing ring arranged in the sealing groove, and the suction nozzle is interference-fitted on the first end of the needle seat.
9. The dermal tension meter of any one of claims 1-5, wherein: The skin tension measuring instrument further comprises an electricity storage part arranged in the shell.
10. The dermal tension meter of any one of claims 1-5, wherein: The negative pressure generating device is an electric vacuum pump.