Waistline automatic measuring device

Abstract

The utility model provides an automatic waistline measuring device, which relates to the technical field of measuring equipment, and comprises a shell, an arc-shaped telescopic plate for drawing a ruler tape is rotatably arranged on the shell, a backup plate and a limiting plate which are vertically arranged are fixedly arranged on the shell, and the length of the backup plate is smaller than the width of a human body to be detected. A tape outlet is formed between the adjacent ends of the backup plate and the limiting plate, the end, rotating on the outer side of the backup plate, of the arc-shaped telescopic plate is an extending end, an arc-shaped connecting rod is fixedly installed at the extending end, and the starting end of the tape penetrates out of the tape outlet and is fixedly installed at the end of the arc-shaped connecting rod. A guide wheel used for guiding the ruler belt is installed on the shell in a sliding mode in the vertical direction, the guide wheel is connected with a linear driving assembly, the ruler belt is drawn through the arc-shaped telescopic plate, the ruler belt is automatically wound around the waist of a measured person, therefore, automatic measurement of the waistline is achieved, and the waistline measuring speed is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of measuring equipment, in particular to an automatic waist circumference measuring device. Background Art

[0002] During a physical examination, multiple indicators such as height, weight, and waist circumference are data that need to be measured and recorded by the medical and health department. When measuring the waist circumference, a common method is that a person holds a tape measure in one hand, presses the tape measure against the waist, and pulls the starting end of the tape measure with the other hand to wind the tape measure around the waist for one week to obtain the waist circumference of the person being measured. During this process, it is necessary to manually wind the tape measure, and the automatic detection of the waist circumference is not realized, resulting in a low efficiency of waist circumference detection.

[0003] Therefore, an automatic waist circumference measuring device that solves the above problems is needed. Summary of the Utility Model

[0004] The utility model provides an automatic waist circumference measuring device. Through the traction of the arc-shaped telescopic plate on the tape, the tape is automatically wound around the waist of the person being measured, thereby realizing the automatic measurement of the waist circumference and improving the waist circumference measurement speed.

[0005] The technical solution of the utility model is realized as follows:

[0006] The automatic waist circumference measuring device includes a housing. An arc-shaped telescopic plate for pulling the tape is rotatably installed on the housing. The arc-shaped telescopic plate is horizontally arranged. The arc-shaped telescopic plate is connected with a rotation driving component. A vertical back plate and a limiting plate are fixedly installed on the housing. Both the back plate and the limiting plate are arranged inside the arc-shaped telescopic plate. The length of the back plate is less than the width of the person to be detected. A tape outlet is formed between the adjacent ends of the back plate and the limiting plate. One end of the arc-shaped telescopic plate that rotates outside the back plate is an extended end. An arc-shaped connecting rod for abutting against the end of the back plate away from the tape outlet is fixedly installed at the extended end. The tape is arranged inside the housing. The starting end of the tape passes through the tape outlet and is fixedly installed at the end of the arc-shaped connecting rod. A guide wheel for guiding the tape is slidably installed on the housing in the vertical direction. The guide wheel is connected with a linear driving component.

[0007] As a preferred technical solution, the linear driving component includes a guide frame fixedly installed on the housing. A mounting rod is slidably installed on the guide frame in the vertical direction. The guide wheel is rotatably installed at the top of the mounting rod. The guide wheel is vertically arranged. A fixing plate is fixedly installed at the bottom of the mounting rod. A compression spring is arranged between the fixing plate and the guide frame. The compression spring is sleeved on the mounting rod.

[0008] As a preferred technical solution, the linear drive assembly includes an outer cylinder fixedly installed on the housing. The outer cylinder is vertically arranged with an open top. An inner cylinder is slidably installed inside the outer cylinder in the vertical direction. A lead screw driven by a lead screw drive motor is fixedly installed inside the outer cylinder. The lead screw is vertically arranged, and a nut is threadedly installed on the lead screw. The nut is fixedly installed on the inner wall of the inner cylinder, and the top of the inner cylinder abuts against the bottom of the fixed plate.

[0009] As a preferred technical solution, an arc-shaped guide groove is fixedly installed on the housing. An arc-shaped convex block is fixedly installed at the bottom of the arc-shaped telescopic plate, and the arc-shaped convex block is constrained and installed in the arc-shaped guide groove.

[0010] As a preferred technical solution, a vertically arranged mounting post is fixedly installed inside the housing. The mounting post is connected with a disc spring. The end of the tape is connected with the disc spring and is wound around the outside of the disc spring with the mounting post as the center.

[0011] As a preferred technical solution, the rotational drive assembly includes two gears rotatably installed on the housing. There is an installation distance between the two gears. Two gear drive motors are fixedly installed on the housing. Each gear is in transmission connection with the corresponding gear drive motor. An arc-shaped rack is fixedly installed on the outside of the arc-shaped telescopic plate, and both gears are meshed with the arc-shaped rack.

[0012] As a preferred technical solution, an inclined surface is provided on the side wall of the limiting plate close to the tape.

[0013] As a preferred technical solution, a threaded hole is provided on the housing in the vertical direction.

[0014] Adopting the above technical solutions, the beneficial effects of the present utility model are as follows:

[0015] Since the waist circumference automatic measuring device includes an arc-shaped telescopic plate, when using this device, the guide wheel moves upward under the push of the linear drive assembly to the same horizontal plane as the tape. The waist of the person to be measured abuts against the backrest plate. After starting this device, under the drive of the gear drive motor, one end of the arc-shaped telescopic plate extends out of the housing. As the arc-shaped telescopic plate moves, the tape is pulled and wound around the guide wheel. When the end of the arc-shaped connecting rod abuts against the backrest plate, under the drive of the linear drive assembly, the guide wheel moves below the tape. Under the action of the disc spring, the tape tightens and is wound around the waist of the person to be measured. By reading the numbers on the tape, the waist circumference can be obtained. Through the traction of the tape by the arc-shaped telescopic plate, the tape is automatically wound around the waist of the person to be measured, thereby realizing the automatic measurement of the waist circumference and improving the waist circumference measurement speed.

[0016] In the present utility model, during the process of the arc-shaped telescopic plate pulling the tape measure, the arrangement of the guide wheel enables the tape measure to be wound around the guide wheel, avoiding the tape measure from tightening around the person to be measured. At the same time, the rotating guide wheel can reduce the frictional force when the tape measure is pulled, reducing the occurrence of the tape measure breaking.

[0017] Since the waist circumference automatic measurement device includes a linear drive mechanism, during the use of this device, through the drive of the lead screw drive motor on the lead screw, the inner cylinder is moved in the vertical direction. Since the inner cylinder abuts against the bottom of the fixed plate, the guide wheel is thus moved upward, bringing the guide wheel to the same horizontal plane as the tape measure. When the arc-shaped connecting rod abuts against the backing plate, the inner cylinder moves downward. Under the action of the self-weight of the guide wheel and the compression spring, the guide wheel moves to the lower side of the tape measure, thus releasing the guiding of the tape measure by the guide wheel and enabling the tape measure to be wound around the waist of the person being measured.

[0018] After the waist circumference measurement is completed, driven by the gear drive motor, the arc-shaped connecting rod moves into the housing. During this process, under the action of the compression spring and the self-weight of the guide wheel, the guide wheel moves downward to the lower side of the tape measure, avoiding the blocking of the tape measure by the guide wheel. After the arc-shaped connecting rod passes by the guide wheel, the guide wheel rises to the same horizontal plane as the tape measure under the drive of the linear drive mechanism, preparing for the next waist circumference measurement. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following-described drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 Structural schematic diagram of the present utility model;

[0021] Figure 2 For Figure 1 Cross-sectional view taken along the A-A direction in

[0022] Figure 3 State reference diagram when the arc-shaped connecting rod abuts against the backing plate;

[0023] Figure 4 State reference diagram when the tape measure is wound around the waist of the person to be detected;

[0024] Figure 5 Structural schematic diagram of the linear drive assembly;

[0025] Figure 6 System block diagram of the controller.

[0026] Wherein: 1. A housing; 2. A measuring tape; 3. An arc-shaped telescopic plate; 4. A backing plate; 5. A limiting plate; 6. A human body to be detected; 7. A measuring tape outlet; 8. An extending end; 9. An arc-shaped connecting rod; 10. A guide wheel; 11. A guide frame; 12. A mounting rod; 13. A fixing plate; 14. A compression spring; 15. An outer cylinder; 16. An inner cylinder; 17. A lead screw drive motor; 18. A lead screw; 19. A nut; 20. An arc-shaped guide groove; 21. An arc-shaped convex block; 22. A mounting post; 23. A disc spring; 24. A gear; 25. A gear drive motor; 26. An arc-shaped rack; 27. An inclined surface; 28. A threaded hole; 29. A handgrip; 30. A controller. Specific embodiments

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figures 1-6 Collectively shown, an automatic waist circumference measuring device includes a housing 1. An arc-shaped telescopic plate 3 for pulling the measuring tape 2 is rotatably installed on the housing 1. The arc-shaped telescopic plate 3 is horizontally arranged. The arc-shaped telescopic plate 3 is connected with a rotation driving assembly. A vertically arranged backing plate 4 and a limiting plate 5 are fixedly installed on the housing 1. Both the backing plate 4 and the limiting plate 5 are arranged inside the arc-shaped telescopic plate 3. The length of the backing plate 4 is less than the width of the human body 6 to be detected. A measuring tape outlet 7 is formed between the adjacent ends of the backing plate 4 and the limiting plate 5. One end of the arc-shaped telescopic plate 3 that rotates outside the backing plate 4 is an extending end 8. An arc-shaped connecting rod 9 for abutting against the end of the backing plate 4 away from the measuring tape outlet 7 is fixedly installed at the extending end 8. A measuring tape 2 is arranged inside the housing 1. The starting end of the measuring tape 2 passes through the measuring tape outlet 7 and is fixedly installed at the end of the arc-shaped connecting rod 9. A guide wheel 10 for guiding the measuring tape 2 is slidably installed on the housing 1 in the vertical direction. The guide wheel 10 is connected with a linear driving assembly.

[0029] Among them, the linear driving assembly includes a guide frame 11 fixedly installed on the housing 1. A mounting rod 12 is slidably installed on the guide frame 11 in the vertical direction. The guide wheel 10 is rotatably installed at the top of the mounting rod 12. The guide wheel 10 is vertically arranged. A fixing plate 13 is fixedly installed at the bottom of the mounting rod 12. A compression spring 14 is arranged between the fixing plate 13 and the guide frame 11. The compression spring 14 is sleeved on the mounting rod 12.

[0030] Also, the linear drive assembly includes an outer cylinder 15 fixedly installed on the housing 1. The outer cylinder 15 is vertically arranged with an open top. An inner cylinder 16 is slidably installed inside the outer cylinder 15 in the vertical direction. A lead screw 18 driven by a lead screw drive motor 17 is fixedly installed inside the outer cylinder 15. The lead screw 18 is vertically arranged, and a nut 19 is threadedly installed on the lead screw 18. The nut 19 is fixedly installed on the inner wall of the inner cylinder 16, and the top of the inner cylinder 16 abuts against the bottom of the fixing plate 13.

[0031] Furthermore, an arc-shaped guiding groove 20 is fixedly installed on the housing 1. An arc-shaped convex block 21 is fixedly installed at the bottom of the arc-shaped telescopic plate 3. The arc-shaped convex block 21 is constrained and installed inside the arc-shaped guiding groove 20.

[0032] Secondly, a vertically arranged mounting post 22 is fixedly installed inside the housing 1. The mounting post 22 is connected with a disc spring 23. The end of the tape 2 is connected with the disc spring 23 and wound around the outside of the disc spring 23 with the mounting post 22 as the center.

[0033] The rotation drive assembly includes two gears 24 rotatably installed on the housing 1. There is an installation distance between the two gears 24. Two gear drive motors 25 are fixedly installed on the housing 1. Each gear 24 is in transmission connection with the corresponding gear drive motor 25. An arc-shaped rack 26 is fixedly installed on the outside of the arc-shaped telescopic plate 3. Both gears 24 are engaged with the arc-shaped rack 26. In the present utility model, due to the setting of the installation distance, when one of the gears 24 is disengaged from the arc-shaped rack 26, the other gear 24 can still be engaged with the arc-shaped rack 26, thereby increasing the rotation angle of the extending end 8.

[0034] A slope 27 is provided on the side wall of the limiting plate 5 close to the tape 2. In the present utility model, the setting of the slope 27 can enable the staff to more conveniently read the numbers on the tape 2.

[0035] A threaded hole 28 is arranged on the housing 1 in the vertical direction. This device can be installed on a vertically arranged support frame through the threaded hole 28, which is convenient for the staff to measure the waist circumference for a long time and continuously. The support frame is not marked in the figure.

[0036] A handgrip 29 is provided on the housing 1.

[0037] It also includes a controller 30. The two gear drive motors 25 and the lead screw drive motor 17 are both electrically connected to the controller 30. In the present utility model, the controller 30 adopts a single-chip microcomputer of the HD64F36109HV model of Renesas Corporation.

[0038] In summary, through the traction of the tape by the arc-shaped telescopic plate, the present utility model enables the tape to automatically wind around the waist of the person to be measured, thereby realizing the automatic measurement of the waist circumference and improving the waist circumference measurement speed.

[0039] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An automatic waist circumference measuring device, comprising a housing, characterized in that, An arc-shaped telescopic plate for pulling a tape is rotatably mounted on the housing. The arc-shaped telescopic plate is horizontally arranged and is connected with a rotation driving component. A vertical back plate and a limiting plate are fixedly mounted on the housing. Both the back plate and the limiting plate are arranged inside the arc-shaped telescopic plate. The length of the back plate is less than the width of the human body to be detected. A tape outlet is formed between adjacent ends of the back plate and the limiting plate. One end of the arc-shaped telescopic plate that rotates outside the back plate is an extending end. An arc-shaped connecting rod for abutting against the end of the back plate away from the tape outlet is fixedly mounted at the extending end. A tape is arranged inside the housing. The starting end of the tape passes through the tape outlet and is fixedly mounted at the end of the arc-shaped connecting rod. A guide wheel for guiding the tape is slidably mounted on the housing in the vertical direction. The guide wheel is connected with a linear driving component.

2. The automatic waist circumference measuring device according to claim 1, characterized in that The linear driving component includes a guide frame fixedly mounted on the housing. An installation rod is slidably mounted on the guide frame in the vertical direction. The guide wheel is rotatably mounted at the top of the installation rod. The guide wheel is vertically arranged. A fixing plate is fixedly mounted at the bottom of the installation rod. A compression spring is arranged between the fixing plate and the guide frame. The compression spring is sleeved on the installation rod.

3. The automatic waist circumference measuring device according to claim 2, characterized in that, The linear driving component includes an outer cylinder fixedly mounted on the housing. The outer cylinder is vertically arranged and has an open top. An inner cylinder is slidably mounted in the inner part of the outer cylinder in the vertical direction. A lead screw driven by a lead screw driving motor is fixedly mounted inside the outer cylinder. The lead screw is vertically arranged. A nut is threadedly mounted on the lead screw. The nut is fixedly mounted on the inner wall of the inner cylinder. The top of the inner cylinder abuts against the bottom of the fixing plate.

4. The automatic waist circumference measuring device according to claim 1, characterized in that, An arc-shaped guide groove is fixedly mounted on the housing. An arc-shaped convex block is fixedly mounted at the bottom of the arc-shaped telescopic plate. The arc-shaped convex block is constrained and installed in the arc-shaped guide groove.

5. The automatic waist circumference measuring device according to claim 1, characterized in that A vertically arranged installation column is fixedly mounted inside the housing. The installation column is connected with a disc spring. The end of the tape is connected with the disc spring and is wound around the outside of the disc spring with the installation column as the center.

6. The automatic waist circumference measuring device according to claim 1, wherein The rotation driving component includes two gears rotatably mounted on the housing. There is an installation distance between the two gears. Two gear driving motors are fixedly mounted on the housing. Each gear is in transmission connection with the corresponding gear driving motor. An arc-shaped rack is fixedly mounted on the outside of the arc-shaped telescopic plate. Both gears are meshed with the arc-shaped rack.

7. The automatic waist circumference measuring device according to claim 1, characterized in that, A slope is arranged on the side wall of the limiting plate close to the tape.

8. The automatic waist circumference measuring device according to claim 1, characterized in that, A threaded hole is arranged on the housing in the vertical direction.

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