Penis circumference measuring device for baby boy
By designing a circumference measuring device for the baby boy's penis using a coil spring and an angular displacement sensor, the problems of inaccurate measurement, inconvenient use and risk of injury in the prior art are solved, and the effects of high accuracy, convenient use and miniaturization and portability are achieved.
Patent Information
- Application Number
- CN202510203358.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-05-13
AI Technical Summary
The existing baby boy penis circumference measurement device is inaccurate in measurement, inconvenient use, and has problems such as risk of injury and high learning costs.
A baby boy's penis circumference measurement device is designed, which uses the elastic force of the coil spring to achieve fitting contact between the soft ruler and the penis, and combines an angular displacement sensor and an electronic display to achieve automated measurement and digital display.
It improves measurement accuracy, reduces learning costs, is convenient to use, avoids the risk of injury caused by doctors' heavy force, and achieves miniaturization and portability.
Smart Images
Figure CN119970005A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of male infant penis measurement, and in particular to a device for measuring the circumference of a male infant penis. Background Art
[0002] With the development of medical technology in today's society, there is a certain technical basis for whether the size of a male baby's genitals affects future fertility, but there is a lack of corresponding auxiliary medical equipment. The existing male baby circumference measurement device is mostly measured by a piece of soft ruler. When measuring, the soft ruler needs to be fitted with the male baby's penis by hand, and the force needs to be mastered by the doctor. However, considering that the male baby's penis is small, a small force cannot ensure that the soft ruler and the penis fit together, resulting in insufficient measurement accuracy; a large force will cause compression of the male baby's penis and cause harm to the male baby. Therefore, the learning cost of the existing measuring device is high, which increases the workload of doctors. In addition, the existing measuring device is not convenient to carry, is generally large, and does not meet the size of the male baby's genitals and the baby's crotch triangle area in size, and is usually not equipped with a digital display function. The reading requires the doctor to specifically check the soft ruler, which affects the process of reading the measurement data while maintaining the measurement state, and is inconvenient to use. Summary of the invention
[0003] In order to solve the above technical problems, the present invention provides a device for measuring the circumference of a male infant's penis, which is easy to use, convenient to read and accurate in measurement.
[0004] The purpose of the present invention is achieved by adopting the following technical solutions. A device for measuring the circumference of a male baby's penis proposed in the present invention includes a shell, one end of which is a triangular prism, and the tip of the triangular prism is provided with an arc-shaped groove; a fixed column and a coil spring wound on the fixed column are provided in the shell, one end of the coil spring is fixed to the fixed column, the fixed column and the coil spring cover the measuring tape tube, the other end of the coil spring is fixed to the inner wall of the measuring tape tube, a D axis is provided at the rotation center of the measuring tape tube, an angular displacement sensor is fixed in the shell, a D-shaped positioning hole in the middle of the angular displacement sensor cooperates with the D axis to realize synchronous rotation, a soft ruler is wound around the outer wall of the measuring tape tube, one end of the soft ruler is fixed to the outer wall of the measuring tape tube, and the other end of the soft ruler passes through the opening of the shell and is fixedly provided with a positioning column; the soft ruler passes through the opening on one side of the arc-shaped groove on the shell, a positioning groove is provided on the other side of the arc-shaped groove, and one end of the positioning column is inserted into the positioning hole. A push plate is slidably arranged in the groove, and a limit plate is arranged at the end of the push plate near the positioning groove. After the positioning column is inserted into the positioning groove, the push plate is pushed, and the limit plate covers the other end of the positioning column; a tension button is slidably arranged on the side wall of the shell, and the other end of the tension button is connected with a tension slider slidably arranged in the shell, and the tension slider is provided with a waist-shaped hole perpendicular to its own sliding direction. A tension column passing through the waist-shaped hole is fixedly arranged in the shell, and the other end of the tension slider is connected with a tension spring, and the other end of the tension spring is arranged on the inner wall of the shell, and the soft ruler passes between the tension column and the inner wall of the waist-shaped hole. Under the elastic force of the tension spring, the tension column presses the soft ruler; the angular displacement sensor is electrically connected to the electronic component, and the display screen of the electronic component is arranged on the shell.
[0005] Furthermore, the shell includes a base and a cover plate that are butt-jointed with each other.
[0006] Furthermore, the elastic column is wrapped with hard silicone on the outside.
[0007] Furthermore, a side wall of the push plate located outside the shell is provided with a sawtooth-shaped concave-convex surface.
[0008] Furthermore, the limiting plate includes a vertical plate portion and a pressure plate portion, and the pressure plate portion is a triangular flat plate. After the end of the positioning column is inserted into the positioning groove, the push plate is pushed, and the pressure plate portion is crimped on the end of the positioning column away from the positioning groove. The end of the push plate and the side wall of the vertical plate portion can cooperate with the side wall of the positioning column.
[0009] Furthermore, a battery for powering the electronic components is installed in the shell, and a battery cover and a power button are installed on the base.
[0010] Compared with the prior art, the present invention is beneficial in that: The present invention achieves the fitting contact between the tape measure and the male baby's penis through the elastic force of the coil spring, and the doctor no longer needs to fit the tape measure with the male baby's penis by hand, and the doctor no longer needs to master the measurement force, so the measurement result is more accurate, and it can avoid the situation where the doctor uses too much force to compress the male baby's penis and cause harm to the male baby. When reading, the number on the display screen can be directly read, and there is no need to check the tape measure. The present invention reduces the learning cost, is convenient to use, easy to read, and has accurate measurement, and the volume of the device is also easy to achieve miniaturization.
[0011] Compared with the measuring tape for measuring the thickness of limbs or waist in the prior art, the soft tape of the present invention no longer needs to rely on the teeth of the middle rotating chuck to fix the central release switch, thereby avoiding the wear and even breakage of the teeth caused by long-term use. The measuring tape for measuring the thickness of limbs or waist in the prior art does not have a position for placing the positioning column on the head of the tape measure, and does not limit the longitudinal position of the positioning column. The push plate of the present invention not only limits the lateral movement of the positioning column, but also limits the longitudinal movement, ensuring that the positioning column will not fall at any position.
[0012] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following specifically cites a preferred embodiment and describes it in detail with the accompanying drawings as follows. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a front schematic diagram of an embodiment of a device for measuring the circumference of a male infant's penis according to the present invention; Figure 2 It is a schematic diagram of the back side of an embodiment of a device for measuring the circumference of a male infant penis of the present invention; Figure 3 It is an internal schematic diagram of an embodiment of a device for measuring the circumference of a male infant's penis according to the present invention; Figure 4 It is a partial schematic diagram of the outer side of a positioning column in an embodiment of a male baby penis circumference measuring device of the present invention when the positioning column is in a state of being limited by a push plate; Figure 5 It is a partial schematic diagram of the inner side of a positioning column in an embodiment of a male baby penis circumference measuring device of the present invention when the positioning column is in a state of being limited by a push plate; Figure 6 The present invention is a schematic cross-sectional view of an embodiment of a device for measuring the circumference of a male infant's penis at the center of an angular displacement sensor.
[0014] Reference numerals 1. Cover plate, 2. Base, 3. Elasticity button, 4. Display screen, 5. Soft ruler, 6. Positioning column, 7. Push plate, 8. Limit plate, 81. Vertical plate part, 82. Pressure plate part, 9. Battery cover, 10. Power button, 11. Angular displacement sensor, 12. Tape measure tube, 13. Elasticity column, 14. Elasticity slider, 15. Elasticity spring, 16. Coil spring, 17. Fixed column, 18. D-axis, 19. Arc groove, 20. Positioning groove, 21. Slide groove. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0016] An embodiment of a device for measuring the circumference of a male infant's penis according to the present invention is as follows: Figures 1 to 6 The device comprises a housing formed by a base 2 and a cover plate 1, wherein the base 2 and the cover plate 1 are connected to form a cavity for accommodating various components in the device, and the respective cavities of the base 2 and the cover plate 1 are connected to each other and are closed by the base 2 and the cover plate 1.
[0017] After removing the cover plate 1, the device Figure 3 As shown, a tape measure tube 12 is provided in the cavity of the base 2, and the tape measure tube 12 is arranged at the bottom of the base 2. The inside of the tape measure tube 12 is as shown in FIG. Figure 6 As shown, Figure 6 This is a cross-sectional view of the device without the cover plate 1 and the tape measure 5. A coil spring 16 is provided in the inner cavity of the tape measure tube 12. One end of the coil spring 16 is bent into a hook shape and hooked on a fixing column 17 provided on the bottom side of the tape measure tube 12. The fixing column 17 is integrally provided with the base 2. The tape measure tube 12 covers the fixing column 17. One end of the coil spring 16 is fixed to the fixing column 17. The remaining part of the coil spring 16 is curled counterclockwise and wrapped around the fixing column 17, and the other end of the coil spring 16 is fixed to the inner wall of the tape measure tube 12.
[0018] One end of the tape measure 5 has a ring buckle, which is hung on a hook on the outer wall of the tape measure tube 12, or one end of the tape measure 5 is fixed to the outer wall of the tape measure tube 12 by other fixing methods, and then it is wound counterclockwise on the outer wall of the tape measure tube 12, and the other end of the tape measure 5 extends from the position of the tape measure tube 12 and passes through the opening of the side wall of the base 2 and extends out of the housing. Pulling the tape measure 5 outward drives the tape measure tube 12 to rotate, so that the internal coil spring 16 is curled and deformed and pre-tightened. After the tape measure 5 is released, the tape measure 5 is rewound on the tape measure tube 12 under the restoring force of the coil spring 16.
[0019] The recovery speed of the tape measure 5 can be adjusted by adjusting the preload force of the coil spring 16 (i.e., adjusting the number of preload turns of the coil spring 16) or adjusting the model of the coil spring 16. The coil spring 16 is curled counterclockwise. When the tape measure 5 is pulled out, the coil spring 16 continues to curl counterclockwise, making the coil spring 16 more compact. The greater the elastic preload force of the coil spring 16, the faster the tape measure 5 can be contracted. When the tape measure 5 is about to be completely contracted, the elastic force of the coil spring 16 is almost released, and the contraction slows down, avoiding excessive contraction from causing harm to the baby boy, achieving controllability of the measurement process, and ensuring safety.
[0020] An angular displacement sensor 11 is installed between the tape measure tube 12 and the cover plate 1. The main body of the angular displacement sensor 11 can be fixed on the cover plate 1 or the base 2. The D-shaped positioning hole in the middle of the angular displacement sensor 11 matches the D-axis 18 fixed on the upper outer wall of the tape measure tube 12. The D-axis 18 is located on the rotation center axis of the tape measure tube 12, and the D-axis 18 is fixed in the D-shaped positioning hole. The soft ruler 5 is wound on the outer wall of the tape measure tube 12, and the D-axis 18 is located on the upper outer wall of the tape measure tube 12 wound by the soft ruler 5. The angular displacement sensor 11 and the tape measure tube 12 are limited by the D-axis 18. When the soft ruler 5 is pulled, the soft ruler 5 drives the tape measure tube 12 to rotate, and the angular displacement sensor 11 and the tape measure tube 12 are synchronously rotated. The angular displacement sensor 11 can measure the rotation angle of the tape measure tube 12. An electronic component is arranged in the shell. The display screen 4 of the electronic component is located on the surface of the cover plate 1. The electronic component receives the data sent by the angular displacement sensor 11 and processes it, and then displays it on the display screen 4.
[0021] One end of the tape measure 5 extending from the housing is connected to a positioning column 6, which is arranged on the side of the end of the tape measure 5 and is parallel to the side. The housing composed of the cover plate 1 and the base 2 is a rectangular parallelepiped as a whole, one side of which protrudes outward to form a triangular prism, and the tip of the triangular prism is provided with a concave arc groove 19, which is convenient for the device to reach the measurement site of the male baby and match the measurement site. The position where the tape measure 5 extends out of the opening is located on one side of the arc groove 19, and the fixed position of the positioning column 6 is located on the other side of the arc groove 19. The side walls on both sides of the arc groove 19 are respectively provided with an elastic button 3 and a push plate 7, wherein the elastic button 3 and the position where the tape measure 5 extends out of the opening are located on the same side of the arc groove 19, and the fixed position of the push plate 7 and the positioning column 6 are located on the same side of the arc groove 19.
[0022] like Figure 3 , 5As shown, the tension button 3 is slidably arranged on the side wall of the housing, one end of the tension button 3 extends into the interior of the housing and is connected to one end of the tension slider 14, and the tension slider 14 is slidably arranged in the housing, and the sliding direction is consistent with the sliding direction of the tension button 3. A tension spring 15 is connected between the other end of the tension slider 14 and the inner wall of the base 2. Pressing the tension button 3 can make the tension slider 14 slide and compress the tension spring 15. After releasing the tension button 3, the tension slider 14 moves to the original position under the action of the restoring force of the tension spring 15.
[0023] like Figure 3 , 5 As shown, the elastic slider 14 is a hollow rectangular structure, and the elastic slider 14 is vertically provided with a waist-shaped hole, which vertically passes through the elastic slider 14, and the length direction of the waist-shaped hole is parallel to the sliding direction of the elastic slider 14. The elastic column 13 is vertically arranged on the base 2, and the elastic column 13 passes through the waist-shaped hole and extends to the cover plate 1.
[0024] There is a gap between the tension column 13 and the inner cavity of the tension slider 14. When the tension spring 15 is not compressed, the inner wall of one side of the tension slider 14 can be pressed against the tension column 13 under the elastic force of the tension spring 15. The tape measure 5 passes between the tension column 13 and the inner wall of one side of the inner cavity of the tension slider 14. When the tension button 3 is not pressed, the elastic force of the tension spring 15 can push the tension slider 14, and the inner walls of the tension column 13 and the tension slider 14 cooperate to clamp the tape measure 5. At this time, the tape measure 5 can neither be pulled out further nor retracted.
[0025] When the tension button 3 is pressed and the tension column 13 and the tension slider 14 release the tape measure 5, the elastic force of the coil spring 16 can drive the tape measure tube 12 to rotate and wind the tape measure 5 to retract it. The tension column 13 is wrapped with hard silicone to ensure the service life, prevent the parts from being damaged, and increase the clamping force.
[0026] like Figures 1 to 5 As shown, the push plate 7 is slidably arranged in a slide groove 21 of the outer wall of the housing formed by the base 2 and the cover plate 1. The base 2 is provided with a positioning groove 20 capable of accommodating the end of the positioning column 6. The positioning groove 20 is located near the bottom surface of the base 2 and is located on one side of the arc groove 19. The side wall of the push plate 7 located outside the housing is provided with a serrated concave-convex surface, so that the push plate 7 can be manually controlled to slide along the slide groove 21 to approach or move away from the positioning groove 20.
[0027] One end of the push plate 7 near the positioning groove 20 is connected to a limiting plate 8, which is vertically arranged on the side wall of the end of the push plate 7. The limiting plate 8 includes a vertical plate portion 81 and a pressure plate portion 82. The vertical plate portion 81 extends from the end side wall of the push plate 7 toward the cover plate 1, and the pressure plate portion is a triangular flat plate, which is located at the end of the vertical plate portion 81 near the cover plate 1. Figure 1, Figure 3 After the lower end of the positioning column 6 is inserted into the positioning groove 20, the limiting plate 8 is pushed, and the top of the limiting plate 8 can be pressed against the end of the positioning column 6 away from the positioning groove 20, and the end of the push plate 7 and the side wall of the limiting plate 8 can cooperate with the side wall of the positioning column 6 to prevent the positioning column 6 from being separated from the positioning groove 20. Figure 4 , Figure 5 shown.
[0028] like Figure 1 , Figure 3 In the state shown, after the positioning column 6 is inserted into the positioning groove 20, the vertical plate portion 81 is not in contact with the positioning column 6, and the pressing plate portion 82 is located above the side of the positioning column 6 instead of directly above it. Figure 1 , Figure 3 In the state of , the positioning column 6 can be freely separated from the positioning groove 20 of the base 2. Figure 4 , Figure 5 As shown, the push plate 7 is pushed toward the side of the positioning groove 20. At this time, the side of the vertical plate portion 81 has contacted the side wall of the positioning column 6, and the pressing plate portion 82 is already located above the positioning column 6 and is in a state of pressing on the end of the positioning column 6. Figure 4 , Figure 5 In this state, the positioning column 6 cannot move freely and cannot be separated from the base 2, thereby achieving the positioning of the positioning column 6.
[0029] When the positioning column 6 is installed in the positioning groove 20, the tape measure 5 can be bent in an arc shape, and the shell has an arc groove 19 on the side facing the tape measure 5. The arc groove 19 of the shell and the arc-shaped tape measure 5 cooperate to form a measuring space for accommodating the penis of the baby boy. At this time, the penis of the baby boy is placed in the measuring space, and then the tension button 3 is pressed again. At this time, the tension column 13 and the tension slider 14 no longer clamp the tape measure 5, and the tape measure 5 will retract under the action of the coil spring 16 until the tape measure 5 contacts the penis of the baby boy during the recovery process. The electronic component can calculate the extended length of the tape measure 5 according to the number of turns or angles of the angular displacement sensor 11, and then calculate the circumference of the penis of the baby boy, and directly display it on the display screen 4. When pressing the tension button 3, the speed of the tape measure 5 recovery can be controlled according to the amplitude of the pressing to avoid hurting the baby boy.
[0030] like Figure 2 As shown, a battery for powering the electronic components is also installed in the shell, and a battery cover 9 and a power button 10 are installed on the base 2. The power button 10 can control the start and stop of the electronic components.
[0031] When measuring the circumference of the male baby's penis, the doctor first manually turns the power button 10 of the base 2 to the ON position, turns on the power to energize the electronic components, and the screen is initialized to display the set initial value. Then the tension button 3 is pressed, and the positioning column 6 is pulled to pull the tape measure 5 out, while driving the tape measure tube 12 to rotate, the angular displacement sensor 11 performs measurement, and the program starts to calculate the length value of the pulled out tape measure 5, and the display screen 4 displays the length value of the pulled out tape measure 5. After the tape measure 5 is manually pulled out for a certain length, stop pressing the tension button 3, put the positioning column 6 into the positioning groove 20 of the base 2, and push the push plate 7 forward by hand until the push plate 7 fixes the positioning column 6 to prevent it from detaching. At this time, the tape measure 5 is bent to form a ring, and the arc groove 19 of the shell and the arc-shaped curved tape measure 5 can cooperate to form a measuring space.
[0032] At this time, the doctor holds the measuring device in one hand according to the hand habit, inserts the baby boy's penis, and lifts the baby boy's penis with the other hand to ensure that the coronal sulcus is measured. After the baby boy's penis is inserted, the arc groove 19 at the front end of the measuring device should be fitted with the baby boy's penis, close to the phalanges, and tightly fitted. After fitting, press the tension button 3, the tension spring 15 is squeezed, the tension slider 14 is away from the tension column 13, the soft ruler 5 loses the extrusion constraint, and the coil spring 16 starts to drive the soft ruler 5 to recycle because the tension spring 15 loses the extrusion of the soft ruler 5. Because the soft ruler 5 is inserted into the baby boy's penis, when the soft ruler 5 encounters the baby boy's penis during the recovery process, the soft ruler 5 is hindered, and the coil spring 16 is hindered by the force of the soft ruler 5 and stops rotating, and the soft ruler 5 stops recycling. The coil spring 16 stops rotating, the tape measure tube 12 stops rotating, and then the angular displacement sensor 11 stops rotating. The electronic component can calculate the circumference of the baby boy's penis according to the angle measured by the angular displacement sensor 11.
[0033] After being stable for one or two seconds, the display screen 4 shows that the value of the measured circumference remains stable. The doctor then records the value. After reading the value, the push plate 7 is moved back, the positioning column 6 is pulled out of the positioning slot 20, and the measuring device leaves the penis of the baby boy. The doctor releases the penis of the baby boy with his other hand and presses the loosening button 3 again. The tape measure 5 is further retracted, and the positioning column 6 moves with the tape measure 5 toward the opening where the tape measure 5 passes through the shell until the positioning column 6 hits the base 2 and the cover plate 1 and returns to the initial position. The display screen 4 now displays the initial number.
[0034] The present invention realizes the fitting contact between the tape measure 5 and the penis of the male baby through the elastic force of the coil spring 16, and the doctor no longer needs to fit the tape measure 5 with the penis of the male baby by hand, and the doctor no longer needs to control the measurement force, the measurement result is more accurate, and it can avoid the situation that the doctor uses too much force to compress the penis of the male baby and cause harm to the male baby. When reading, the number on the display screen 4 can be directly read, and there is no need to check the tape measure 5. The learning cost is reduced, the use is convenient, the reading is convenient, the measurement is accurate, and the volume of the device is also easy to achieve miniaturization.
[0035] Compared with the measuring tape for measuring the thickness of limbs or waist in the prior art, the soft ruler 5 of the present invention no longer needs to rely on the teeth of the middle rotating chuck to fix the central release switch, thereby avoiding the wear and even breakage of the teeth caused by long-term use. The measuring tape for measuring the thickness of limbs or waist in the prior art does not have a position for placing the positioning column 6 at the head of the soft ruler 5, and does not limit the longitudinal position of the positioning column 6. The push plate 7 of the present invention not only limits the lateral movement of the positioning column 6, but also limits the longitudinal movement, ensuring that the positioning column 6 will not fall at any position.
[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A device for measuring the circumference of a male infant's penis, comprising a housing, characterized in that: One end of the shell is a triangular prism, and the tip of the triangular prism is provided with an arc groove (19); a fixed column (17) and a coil spring (16) wound around the fixed column (17) are provided in the shell, one end of the coil spring (16) is fixed to the fixed column (17), the fixed column (17) and the coil spring (16) cover the measuring tape tube (12), the other end of the coil spring (16) is fixed to the inner wall of the measuring tape tube (12), a D axis (18) is provided at the rotation center of the measuring tape tube (12), and an angular displacement sensor (11) is fixed in the shell. The D-shaped positioning hole in the middle of the angular displacement sensor (11) cooperates with the D-axis (18) to realize synchronous rotation. The outer wall of the measuring tape tube (12) is wound with a soft ruler (5). One end of the soft ruler (5) is fixed to the outer wall of the measuring tape tube (12). The other end of the soft ruler (5) passes through the opening of the shell and is fixedly provided with a positioning column (6). The soft ruler (5) passes through the opening on one side of the arc groove (19) on the shell. The other side of the arc groove (19) is provided with a positioning groove (20). One end of the positioning column (6) is inserted into the positioning groove (20). A push plate (7) is slidably arranged on the other side of the shaped groove (19), and a limit plate (8) is arranged at the end of the push plate (7) close to the positioning groove (20). After the positioning column (6) is inserted into the positioning groove (20), the push plate (7) is pushed, and the limit plate (8) covers the other end of the positioning column (6); a tension button (3) is slidably arranged on the side wall of the shell, and the other end of the tension button (3) is connected to a tension slider (14) slidably arranged in the shell, and the tension slider (14) is provided with a waist perpendicular to its own sliding direction. The housing comprises a waist-shaped hole, a tension column (13) passing through the waist-shaped hole is fixedly arranged in the housing, the other end of the tension slider (14) is connected to the tension spring (15), the other end of the tension spring (15) is arranged on the inner wall of the housing, the soft ruler (5) passes between the tension column (13) and the inner wall of the waist-shaped hole, and under the elastic force of the tension spring (15), the tension column (13) presses the soft ruler (5); the angular displacement sensor (11) is electrically connected to the electronic component, and the display screen (4) of the electronic component is arranged on the housing.
2. A device for measuring the circumference of a male infant's penis according to claim 1, characterized in that: The shell comprises a base (2) and a cover plate (1) which are butt-jointed with each other.
3. A device for measuring the circumference of a male infant's penis according to claim 1, characterized in that: The elastic column (13) is externally wrapped with hard silica gel.
4. A device for measuring the circumference of a male infant's penis according to claim 1, characterized in that: The side wall of the push plate (7) located outside the shell is provided with a sawtooth-shaped concave-convex surface.
5. A device for measuring the circumference of a male infant's penis according to claim 1, characterized in that: The limiting plate (8) comprises a vertical plate portion (81) and a pressure plate portion (82), wherein the pressure plate portion (82) is a triangular flat plate. After the end of the positioning column (6) is inserted into the positioning groove (20), the push plate (7) is pushed, and the pressure plate portion (82) is pressed against the end of the positioning column (6) away from the positioning groove (20). The end of the push plate (7) and the side wall of the vertical plate portion (81) can cooperate with the side wall of the positioning column (6) to be locked.
6. A device for measuring the circumference of a male infant's penis according to claim 1, characterized in that: A battery for supplying power to the electronic components is installed in the housing, and a battery cover (9) and a power button (10) are installed on the base (2).