Automatic leg measuring instrument
By designing the limiting components and reset components of the automatic leg measuring instrument, the problem of uneven measuring tape is solved, and the accuracy of leg circumference measurement and simplicity of operation are achieved.
Patent Information
- Application Number
- CN202421682922.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the prior art, when measuring the leg circumference using a tape ruler, the force is uneven, resulting in inaccurate measurement data.
An automatic leg measuring device is designed, using a rolling roller structure that combines the limiting assembly and reset assembly to ensure that the tape measure is evenly wrapped around the legs, avoid excessive squeezing of muscles, and is equipped with an electronic sensor and a display screen to display the measurement results.
The accuracy of leg circumference measurement and ease of operation are achieved, avoiding excessive muscle squeezing, saving time and labor.
Smart Images
Figure CN223126527U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of leg measurement, and particularly relates to a leg automatic measuring instrument. Background Technique
[0002] With the obvious increase in the aging population and patients with complex surgical diseases, the occurrence of DVT after major surgery has become more prominent. Preventing deep vein thrombosis during the perioperative period is one of the means to promote the health and safety of patients; patients with deep vein thrombosis have obvious symptoms, including lower limb swelling, local deep tenderness, and pain on dorsiflexion of the foot. The lower limb swelling corresponds to the change in leg circumference. Clinically, the demand for accurate measurement and recording of leg circumference is increasing day by day.
[0003] In the prior art, the leg circumference is generally measured by winding a tape measure around the leg. However, there are the following problems in actual operation. When using a tape measure to measure, the applied force is not uniform enough, resulting in inaccurate leg circumference measurement data.
[0004] Therefore, it is necessary to provide a leg automatic measuring instrument to solve the above technical problems. Content of the Utility Model
[0005] The purpose of the utility model is to provide a leg automatic measuring instrument to solve the problems in the prior art such as the uneven force when using a tape measure, resulting in inaccurate leg circumference measurement data as described in the above background technique.
[0006] Based on the above idea, the utility model provides the following technical solution: It includes a shell and a tape measure for measuring the leg circumference. One side of the shell is set as an arc surface. A winding roller is rotatably connected inside the shell. The tape measure is wound around the outside of the winding roller and one end of the tape measure is fixed to the winding roller. The other end of the tape measure extends to the outside of the shell and is movably matched with it. A limiting mechanism is arranged outside the winding roller. The limiting mechanism includes a limiting component and a reset component. The reset component is arranged inside the winding roller, and the limiting component is arranged outside the winding roller; an unlocking component is arranged above the limiting component. By pressing the unlocking component to squeeze the limiting component, the fixation of the winding roller is released.
[0007] As a further scheme of the utility model: The limiting component includes a ratchet wheel, the ratchet wheel is fixedly connected to the outside of the winding roller, a ratchet pawl is arranged on one side of the ratchet wheel, a vertical rod is arranged inside the ratchet pawl, the vertical rod is fixedly connected to the inner bottom surface of the shell, and the ratchet pawl and the vertical rod are fixed through a torsion spring.
[0008] As a further scheme of the utility model: The reset component includes a support rod, the support rod is arranged inside the winding roller, the support rod is fixedly connected to the inner bottom surface of the shell, and the winding roller and the support rod are fixed through a hairspring.
[0009] As a further solution of the present utility model: The release assembly includes a first extrusion block, the first extrusion block is fixedly connected to the outer surface of the ratchet pawl, a second extrusion block is arranged above one side of the first extrusion block, a sliding rod is fixedly connected to the top of the second extrusion block, one end of the sliding rod extends to the outside of the housing and is slidably matched with the housing, and the housing and the second extrusion block are fixed by a spring, and the spring is sleeved outside the sliding rod.
[0010] As a further solution of the present utility model: A handle is integrally formed on the outer side of the housing for hand-held operation.
[0011] As a further solution of the present utility model: A groove is formed on the upper surface of the housing, an elastic buckle is arranged in the groove, and a marker pen is clamped in the elastic buckle.
[0012] As a further solution of the present utility model: A display screen is arranged on the upper surface of the housing.
[0013] Compared with the prior art, the beneficial effect of the present utility model is that through the cooperation of the limiting assembly and the reset assembly, the leg muscles will not be excessively squeezed when measuring the leg circumference, avoiding inaccurate measurement.
[0014] Compared with the prior art, the beneficial effect of the present utility model is that through the cooperation of the limiting assembly and the release assembly, the tape measure can be quickly retracted, with a simple structure, convenient operation, saving time and manpower. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0016] Figure 1 is the front view structural schematic diagram of the present utility model;
[0017] Figure 2 is the ratchet structure schematic diagram of the present utility model;
[0018] Figure 3 is the present utility model Figure 2 The enlarged structural schematic diagram at position A.
[0019] In the figure: 1. Housing; 2. Winding roller; 3. Tape measure; 4. Limiting mechanism; 401. Ratchet; 402. Hairspring; 403. Support rod; 404. Ratchet pawl; 405. Torsion spring; 5. Handle; 6. First extrusion block; 601. Second extrusion block; 602. Spring; 603. Sliding rod; 7. Marker pen; 8. Display screen. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0020] Such as Figures 1 to 3As shown in the figure, a leg automatic measuring device includes a housing 1 and a tape measure 3 for measuring leg circumference. One side of the housing 1 is set as an arc surface. A winding roller 2 is rotatably connected inside the housing 1. The tape measure 3 is wound around the outside of the winding roller 2 and one end of the tape measure 3 is fixed to the winding roller 2. The other end of the tape measure 3 extends to the outside of the housing 1 and is movably matched with it. A limiting mechanism 4 is arranged on the outside of the winding roller 2. The limiting mechanism 4 includes a limiting component and a reset component. The reset component is arranged inside the winding roller 2, and the limiting component is arranged on the outside of the winding roller 2.
[0021] The limiting component includes a ratchet wheel 401. The ratchet wheel 401 is fixedly connected to the outside of the winding roller 2. A pawl 404 is arranged on one side of the ratchet wheel 401. A vertical rod is arranged inside the pawl 404. The vertical rod is fixedly connected to the inner bottom surface of the housing 1. The pawl 404 and the vertical rod are fixed by a torsion spring 405.
[0022] The reset component includes a support rod 403. The support rod 403 is arranged inside the winding roller 2. The support rod 403 is fixed to the inner bottom surface of the housing 1. The winding roller 2 and the support rod 403 are fixed by a clockwork spring 402.
[0023] During specific operation, a handle 5 is integrally formed outside the housing 1 for hand-held operation. When the arc surface on the housing 1 is attached to the surface of the leg, the tape measure 3 can be pulled by stretching one end of the tape measure 3 to wind around the leg for one circle. The movement of the tape measure 3 drives the winding roller 2 to rotate against the force of the clockwork spring 402. The rotation of the winding roller 2 drives the ratchet wheel 401 to rotate. However, the ratchet wheel 401 is restricted by the pawl 404, so that the ratchet wheel 401 can only rotate in one direction and cannot rotate in the reverse direction. The tape measure 3 is wound around the leg for one circle to measure the leg circumference. Through the cooperation of the limiting component and the reset component, the leg muscles will not be overly squeezed during leg circumference measurement, avoiding inaccurate measurement. A groove is provided on the upper surface of the housing 1. An elastic buckle is arranged in the groove. A marker pen 7 is clamped in the elastic buckle. After the leg measurement is completed, the marker pen 7 can be quickly taken out of the elastic buckle to mark the measurement position. A display screen 8 is arranged on the upper surface of the housing 1, and the measurement data is displayed on the display screen 8. An electronic sensor is equipped in the tape measure 3. When the tape measure 3 is pulled for measurement, the electronic sensor will capture the movement or position change of the tape measure 3 and convert it into an electrical signal. These electrical signals are then sent to the data processing unit for necessary calculations and processing. Finally, the processed data is displayed through the display screen 8 connected to the system.
[0024] Such as Figures 2 to 3As shown in the figure, a release component is arranged above the limit component. By pressing the release component to squeeze the limit component, the fixation of the winding roller 2 is released. The release component includes a first extrusion block 6, and the first extrusion block 6 is fixedly connected to the outer surface of the pawl 404. Above one side of the first extrusion block 6, there is a second extrusion block 601. The top of the second extrusion block 601 is fixedly connected with a slide rod 603. One end of the slide rod 603 extends outside the housing 1 and is slidably matched with it. The housing 1 and the second extrusion block 601 are fixed by a spring 602, and the spring 602 is sleeved outside the slide rod 603.
[0025] During specific operation, after the leg circumference measurement is completed, the slide rod 603 extending outside the housing 1 can be pressed. The slide rod 603 moves towards the direction of the first extrusion block 6 against the acting force of the spring 602. The movement of the slide rod 603 drives the movement of the second extrusion block 601. Since the shapes of the second extrusion block 601 and the first extrusion block 6 are set as spheres, the second extrusion block 601 can squeeze the first extrusion block 6 to move towards the direction close to the pawl 404. The movement of the first extrusion block 6 drives the pawl 404 to move against the acting force of the torsion spring 405. The movement of the pawl 404 can release the limit on the ratchet wheel 401, so that the winding roller 2 rotates clockwise under the acting force of the clockwork spring 402. The rotation of the winding roller 2 can quickly recycle the tape measure 3. The structure is simple, the operation is convenient, and time and labor are saved.
Claims
1. An automatic leg measuring device, comprising a housing (1) and a tape measure (3) for measuring leg circumference, characterized in that: One side of the housing (1) is provided as an arc surface. A winding roller (2) is rotatably connected inside the housing (1). A tape measure (3) is wound around the outside of the winding roller (2), and one end of the tape measure (3) is fixed to the winding roller (2). The other end of the tape measure (3) extends outside the housing (1) and is movably engaged therewith. A limiting mechanism (4) is provided outside the winding roller (2). The limiting mechanism (4) includes a limiting component and a reset component. The reset component is arranged inside the winding roller (2), and the limiting component is arranged outside the winding roller (2). An unlocking component is arranged above the limiting component. By pressing the unlocking component to squeeze the limiting component, the fixation of the winding roller (2) is released.
2. The automatic leg measuring device according to claim 1, wherein: The limiting component includes a ratchet wheel (401). The ratchet wheel (401) is fixedly connected to the outside of the winding roller (2). A ratchet pawl (404) is arranged on one side of the ratchet wheel (401). A vertical rod is arranged inside the ratchet pawl (404). The vertical rod is fixedly connected to the inner bottom surface of the housing (1). The ratchet pawl (404) and the vertical rod are fixed by a torsion spring (405).
3. The automatic leg measuring device according to claim 2, characterized in that: The reset component includes a support rod (403). The support rod (403) is arranged inside the winding roller (2). The support rod (403) is fixed to the inner bottom surface of the housing (1). The winding roller (2) and the support rod (403) are fixed by a clockwork spring (402).
4. The automatic leg measuring instrument according to claim 3, characterized in that: The unlocking component includes a first extrusion block (6). The first extrusion block (6) is fixedly connected to the outer surface of the ratchet pawl (404). A second extrusion block (601) is arranged above one side of the first extrusion block (6). The top of the second extrusion block (601) is fixedly connected to a sliding rod (603). One end of the sliding rod (603) extends outside the housing (1) and is slidably engaged therewith. The housing (1) and the second extrusion block (601) are fixed by a spring (602). The spring (602) is sleeved outside the sliding rod (603).
5. The automatic leg measuring device according to claim 1, characterized in that: A handle (5) is integrally formed outside the housing (1) for hand-held operation.
6. The leg automatic measuring instrument according to claim 1, characterized in that: A groove is formed on the upper surface of the housing (1). An elastic buckle is arranged inside the groove, and a marker pen (7) is clamped inside the elastic buckle.
7. The automatic leg measuring instrument according to claim 1, characterized in that: A display screen (8) is arranged on the upper surface of the housing (1).