Improved leg circumference measuring device

Abstract

The utility model provides a kind of improved leg circumference measuring device.The improved leg circumference measuring device includes fixed part and vertical ruler, fixed part middle part is equipped with positioning hole, positioning hole can be placed on patella;Vertical ruler is set in the opposite side of fixed part, and the end of vertical ruler away from fixed part is equipped with ruler band, and ruler band can be around leg in the direction perpendicular to vertical ruler;Among them, the end of vertical ruler close to ruler band can be moved to and lean on one side of fixed part.The improved leg circumference measuring device can fold or retract the end of vertical ruler towards ruler band to fixed part, the end of vertical ruler close to ruler band is overlapped with fixed part, and ruler band can tightly fix vertical ruler with fixed part, improve the storage capacity of vertical ruler and fixed part, also can prevent vertical ruler from being too long, cause storage or extrusion deformation, cause the risk of inaccurate leg circumference data measurement.

Description

Technical Field

[0001] This utility model relates to the field of leg circumference measurement technology, specifically to an improved leg circumference measurement device. Background Technology

[0002] Current modified leg circumference measuring devices are primarily designed based on human anatomy and metrology, and are widely used in fields such as medical rehabilitation, sports training, and health management. Their design emphasizes portability, accuracy, and ease of operation. These devices typically use the midpoint of the patella (midpoint of the kneecap) as a fixed reference point for measurement. This design leverages the easily identifiable anatomical location of the knee, helps standardize measurement, and reduces human error. Using the midpoint of the patella as the "0 point," leg circumference data is measured at fixed distances upwards and downwards (e.g., 15cm upwards and 10cm downwards).

[0003] In the prior art, the improved leg circumference measuring device consists of a base plate and a support rod. The support rod is fixed on both sides of the base plate and is usually a one-piece design. The base plate is used to fix the user's patella, and the support rod extends up and down toward the patella and measures the user's leg circumference data at its end.

[0004] However, in the above solution, since the support rod and the base plate are fixed, the irregular structure will occupy too much space, which cannot meet the requirements of easy storage for medical staff, making the storage of the support rod a problem. At the same time, the support rod extends outward, which is also prone to deformation and breakage due to collisions. As a result, the size of the end of the support rod is difficult to meet the required fixed distance, such as 15cm at the top and 10cm at the bottom, resulting in inaccurate leg circumference data detection.

[0005] Therefore, this application aims to solve the problem that the improved leg circumference measuring device is not easy to store and that the leg circumference data is inaccurate due to the deformation of the support rod caused by collision. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an improved leg circumference measuring device, which aims to facilitate the storage of the improved leg circumference measuring device and reduce the risk of inaccurate leg circumference data measurement caused by the deformation of the support rod due to collision.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an improved leg circumference measuring device, comprising:

[0008] The fastener has a positioning hole in its middle, which allows it to be placed on the patella; and

[0009] A vertical ruler is provided on both sides of the fixing member. The end of the vertical ruler away from the fixing member is provided with a ruler strap, which can wrap around the leg in a direction perpendicular to the vertical ruler.

[0010] The end of the vertical ruler near the ruler strip can be moved toward and rest against one side of the fixing member.

[0011] Furthermore, the vertical ruler can be extended to one side of the fixing member.

[0012] Furthermore, a baffle is provided at the end of the vertical ruler away from the fixing member. When the vertical ruler retracts to the fixing member, the baffle at the end of the vertical ruler is locked and limited by the fixing member.

[0013] Furthermore, the vertical ruler can be folded to form a V-shaped structure and extended to one end of the fixing member.

[0014] Furthermore, the vertical ruler is stepped and can be folded at the junction of its steps.

[0015] Furthermore, the vertical ruler is provided with at least one weakening groove to fold the end away from the fixing member.

[0016] Furthermore, it includes an adjusting member disposed at the positioning hole, the adjusting member comprising an adjusting ring detachably mounted on the fixing member.

[0017] Furthermore, the through hole of the adjusting ring is detachably fitted with a cover.

[0018] Furthermore, the baffle is fixedly connected to the end of the ruler, or can be detachably connected.

[0019] Furthermore, the edge of the positioning hole is provided with a scale corresponding to the vertical ruler, and a pointing ring is provided between the outer periphery of the adjusting ring and the inner wall of the positioning hole. The pointing ring is provided with a first pointer and a second pointer corresponding to the scale, and at least one of the first pointer and the second pointer can be adjusted around the pointing ring.

[0020] This invention provides an improved leg circumference measuring device. It has the following beneficial effects:

[0021] This improved leg circumference measuring device uses a vertical ruler and a fixing component to work together. The end of the vertical ruler facing the measuring tape can be folded or extended to the fixing component. When the end of the vertical ruler near the measuring tape is overlapped with the fixing component, the measuring tape can bind the vertical ruler and the fixing component tightly. This not only improves the storage capacity of the vertical ruler and the fixing component, but also prevents the vertical ruler from extending too far, causing storage or compression deformation, which could lead to inaccurate leg circumference measurements. Attached Figure Description

[0022] Figure 1 This is a first-view structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the second-view structure of the present invention;

[0024] Figure 3 This is an exploded structural diagram of the present invention;

[0025] Figure 4 This is a schematic diagram of the three-dimensional ruler structure of this utility model.

[0026] Among them, 1. Fixing component; 11. Positioning hole; 12. Scale; 13. Three-dimensional ruler; 14. Ruler tape; 15. Switch; 2. Elastic band; 3. Vertical ruler; 31. Baffle; 4. Adjusting component; 41. Pointing ring; 411. First pointer; 412. Second pointer; 42. Adjusting ring; 43. Cover. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figure 1 , Figure 3 and Figure 4 As shown, this utility model embodiment provides an improved leg circumference measuring device, including a fixing member 1 and a vertical ruler 3. The fixing member 1 has a positioning hole 11 in the middle, which can be placed on the patella. The vertical ruler 3 is arranged on opposite sides of the fixing member 1. The end of the vertical ruler 3 away from the fixing member 1 is provided with a measuring tape 14, which can wrap around the leg in a direction perpendicular to the vertical ruler 3. The end of the vertical ruler 3 near the measuring tape 14 can be moved toward and rest against one side of the fixing member 1.

[0029] Specifically, the positioning element can be supported by a film, plastic sheet, or rubber pad. It needs to have a certain degree of toughness, and the side that fits against the leg is preferably curved to improve the tightness of the fit. The positioning hole 11 is preferably located in the middle of the fixing element 1, and its shape can be designed to conform to the shape of the patella. The vertical ruler 3 is set on both sides of the fixing element 1. After the positioning hole 11 is fitted to the patella for positioning, the vertical ruler 3 extends up and down along the leg length to reach the position to be measured. The ruler strap 14 can then be used to wrap around the leg and measure the leg circumference at different positions to achieve the measurement purpose. After the measurement is completed, the free end of the vertical ruler 3 can be folded or extended towards the fixing element 1 to store the free end of the vertical ruler 3 in the fixing element 1, which can prevent the vertical ruler 3 from bending and deforming, thus affecting the measurement requirements. In addition, one end of the vertical ruler 3 can be fixedly installed to the fixing element 1. The vertical ruler 3 can also be stored by folding it multiple times to make it close to the fixing element 1.

[0030] like Figure 1 and Figure 2 As shown, in one embodiment of this application, the vertical ruler 3 can extend and retract to one side of the fixing member 1. The vertical ruler 3 and the fixing member 1 extend and retract. After the vertical ruler 3 has completed the measurement, it is retracted towards the fixing member 1, so that the vertical ruler 3 can be hidden in the fixing member 1. Preferably, the end of the vertical ruler 3 near the fixing member 1 is foldable, so that the end of the vertical ruler 3 near the fixing member 1 can be folded after it is stored, thereby increasing the storage space of the vertical ruler 3. When the vertical ruler 3 is pulled out from the fixing member 1, the end of the vertical ruler 3 is locked with the fixing member 1, thereby restricting the fixing member 1 from moving outward, thereby limiting the length of the vertical ruler 3 pulled out, fixing the vertical length of the vertical ruler 3, facilitating storage, and ensuring the accuracy requirements of the measurement.

[0031] Specifically, a baffle 31 is provided at the end of the vertical ruler 3 away from the fixing member 1. When the vertical ruler 3 retracts to the fixing member 1, the baffle 31 at the end of the vertical ruler 3 is locked and limited by the fixing member 1. When the measuring tape 14 measures the leg circumference from the free end of the vertical ruler 3, the vertical ruler 3 wraps around the edge of the baffle 31. The baffle 31 can limit the wrapping state of the measuring tape 14, keeping both ends of the measuring tape 14 against the baffle, thus improving the measurement accuracy of the measuring tape 14. After the measurement is completed, the vertical ruler 3 retracts into the fixing member 1, and the baffle 31 is locked at one end of the fixing member 1. By squeezing, the vertical ruler 3 is restricted from moving out again, thus playing a pre-positioning role. At the same time, the baffle 31 also prevents the vertical ruler 3 from separating from the fixing member 1. When used later, it can be pulled out again by the baffle 31 for reuse.

[0032] like Figure 1 , Figure 2 and Figure 4 As shown, in one embodiment of this application, the vertical ruler 3 can be folded to form a V-shaped structure and extend to one end of the fixing member 1. Specifically, the middle of the vertical ruler 3 can be folded, so that after folding the end of the vertical ruler 3 away from the fixing member 1, the vertical ruler 3 is folded into a V-shape, and both ends are retracted to the sides of the fixing member 1. The two inner walls of the V-shape are both attached to the outer wall of the fixing member 1, increasing the contact area and preventing the vertical ruler 3 from protruding from the fixing member 1, thus avoiding easy collision and deformation, which could impair measurement accuracy. Preferably, the vertical ruler 3 is stepped and can be folded at the junction of its steps, making it easy to fold the stepped vertical ruler 3 into a V-shaped structure. The width of the end of the vertical ruler 3 away from the fixing member 1 gradually increases, which improves the contact area with the ruler strip 14 and meets the measurement accuracy requirements. In addition, at least one weakening groove is provided on the vertical ruler 3 to fold its end away from the fixing member 1. The vertical ruler 3 can also be folded into a V-shape by setting a weakening groove, or the weakening groove can be combined with a stepped design.

[0033] like Figure 2 and Figure 3As shown, in one embodiment of this application, an adjusting member 4 is also provided at the positioning hole 11. The adjusting member 4 includes an adjusting ring 42 detachably mounted on the fixing member 1. The adjusting ring 42 can be fixed to the fixing member 1 by insertion, adhesion, or Velcro. In this application, two adjusting rings 42 are preferably provided. The adjusting ring 42 is adhered to the inner wall of the positioning hole 11 by Velcro to accommodate different patella sizes of users. There is a through hole in the middle of the adjusting ring 42, and a cover 43 is detachably installed inside the through hole. The cover 43 and the adjusting ring 42 are used to cover the positioning hole 11. After storage, the cover 43 can cover the pointing ring 41 and the adjusting ring 42 to fill the positioning hole 11.

[0034] like Figure 2 and Figure 3 As shown, the baffle 31 is fixedly connected to the end of the measuring tape 14, or it can be detachably connected. The measuring tape 14 can be measured using a three-dimensional measuring tape 13. A switch 15 is provided on the three-dimensional measuring tape 13. The measuring tape 14 can be pulled out by the switch 15 and used to measure the leg circumference around the leg along the baffle 31. Alternatively, the measuring tape 14 can be used as a belt measuring tape. For example, one end of the measuring tape 14 can be fixed to the baffle 31, so that the other end of the measuring tape 14 can be used to wrap around the leg circumference and finally overlap with the baffle 31 to measure the leg circumference. It should be noted that when using the belt measuring tape method, after the vertical ruler 3 is stored in the fixing member 1, the belt measuring tape can act as a tightening strap to bind the vertical ruler 3 and the fixing member 1 tightly, which helps to store the vertical ruler 3 and the fixing member 1.

[0035] like Figure 1 and Figure 2 As shown, one side of the fastener 1 is provided with an elastic band 2 for tightening the leg, and / or the fastener 1 can be attached to the leg. The elastic band 2 can be wrapped around the leg and tightly secured, or the edge of the fastener 1 can be attached to the leg with double-sided tape, or the fastener 1 can be fixed to the leg, or both can be combined. In this application, a Velcro is also provided at the end of the elastic band 2. By fastening the end of the Velcro, it can be tightly secured to the leg.

[0036] like Figures 1 to 3As shown, the edge of the positioning hole 11 is provided with a scale 12 corresponding to the vertical ruler 3. A guide ring 41 is provided between the outer periphery of the adjusting ring 42 and the inner wall of the positioning hole 11. A first pointer 411 and a second pointer 412 corresponding to the scale 12 are provided on the guide ring 41. At least one of the first pointer 411 and the second pointer 412 can be adjusted around the guide ring 41. Specifically, the scale 12 is divided into two different scales, upper and lower, corresponding to the leg circumference measurement ranges required by the upper and lower vertical rulers 3 respectively. The first pointer 411 and the second pointer 412 point to the corresponding range of the vertical ruler 3 respectively. Since the pointer ring 41 can be rotatably connected to the positioning hole 11, the adjusting ring 42 can be glued and fixed to the inner wall of the pointer ring 41 by Velcro. The first pointer 411 is fixedly connected to the pointer ring 41, and the second pointer 412 is slidably connected to the inner wall of the pointer ring 41, so that the second pointer 412 can be adjusted back and forth on the corresponding scale 12 to meet the requirements of the leg circumference record after measurement. The direction of the first pointer 411 can be met by simply rotating the pointer ring 41. The above leg circumference record can record the leg circumference value of the previous day, which is convenient for doctors to compare when measuring on the same day. It helps doctors to observe the changes in the leg circumference value within a day. It can also record the values ​​with large errors in detail, depending on the value required by the doctor.

[0037] In addition to the above, the first pointer 411 and the second pointer 412 can also be interchanged. That is, the second pointer 412 is fixed on the pointing ring 41, and the first pointer 411 is slidably set on the pointing ring 41. Alternatively, both the first pointer 411 and the second pointer 412 can be slidably set on the inner wall of the pointing ring 41, and a corresponding range can be set on the pointing ring 41 to prevent the sliding adjustment of the first pointer 411 and the second pointer 412 from being excessive. There is damping between the pointing ring 41 and the inner wall of the positioning hole 11, so that after the pointing ring 41 rotates, it is fixed at the scale 12 it points to by friction.

[0038] Working principle: First, align the positioning hole 11 with the user's patella. Fixing member 1 is fixed to the leg by elastic band 2. Next, pull out or fold out the vertical ruler 3 from both ends of fixing member 1, and pull out the vertical ruler 3 along both sides of the patella to the limit distance, which is the required leg circumference to be measured. Then, the measuring tape 14 is wrapped around the leg along the baffle 31 and the leg circumference is measured. After the measurement is completed, put the vertical ruler 3 back towards fixing member 1 so that the vertical ruler 3 overlaps with fixing member 1. Then, the measuring tape 14 can be wrapped around fixing member 1 and tied tightly, so that the improved leg circumference measuring device forms a block, which is convenient for storage and avoids problems such as deformation of vertical ruler 3 due to collision.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An improved leg circumference measuring device, characterized by, include: The fixing member (1) has a positioning hole (11) in its middle part, which can be placed on the patella; and A vertical ruler (3) is provided on both sides opposite to the fixing member (1). The end of the vertical ruler (3) away from the fixing member (1) is provided with a ruler strap (14). The ruler strap (14) can wrap around the leg in a direction perpendicular to the vertical ruler (3). The end of the vertical ruler (3) near the ruler strip (14) can be moved toward and rest against one side of the fixing member (1).

2. The improved leg circumference measuring device according to claim 1, characterized in that: The vertical ruler (3) can be extended to one side of the fixing member (1).

3. A modified leg circumference measuring device according to claim 2, wherein: The vertical ruler (3) is provided with a baffle (31) at one end away from the fixing member (1). When the vertical ruler (3) retracts to the fixing member (1), the baffle (31) at the end of the vertical ruler (3) is locked and limited by the fixing member (1).

4. The improved leg circumference measuring device of claim 1, wherein: The vertical ruler (3) can be folded to form a V-shaped structure and extended to one end of the fixing member (1).

5. A modified leg circumference measuring device according to claim 4, wherein: The vertical ruler (3) is stepped and can be folded at the junction of its steps.

6. A modified leg circumference measuring device according to claim 4, wherein: At least one weakening groove is provided on the vertical ruler (3) to fold the end away from the fixing member (1).

7. The improved leg circumference measuring device of claim 1, wherein: It includes an adjusting member (4) disposed at the positioning hole (11), the adjusting member (4) including an adjusting ring (42) detachably mounted on the fixing member (1).

8. An improved leg circumference measuring device according to claim 7, characterized in that: The through hole of the adjusting ring (42) is detachably fitted with a cover (43).

9. An improved leg circumference measuring device according to claim 3, characterized in that: The baffle (31) is fixedly connected to the end of the ruler (14), or can be detachably connected.

10. An improved leg circumference measuring device according to claim 7, characterized in that: The edge of the positioning hole (11) is provided with a scale (12) corresponding to the vertical ruler (3). A guide ring (41) is provided between the outer periphery of the adjusting ring (42) and the inner wall of the positioning hole (11). A first pointer (411) and a second pointer (412) corresponding to the scale (12) are provided on the guide ring (41). At least one of the first pointer (411) and the second pointer (412) can be adjusted around the guide ring (41).

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