Electronic retractable flexible ruler based on infrared detection

Abstract

The utility model discloses an electronic retractable flexible rule based on infrared detection, which relates to the technical field of medical instruments and comprises a shell, and a distance measuring mechanism and a retracting mechanism are arranged in the shell. According to the utility model, through mutual cooperation between the distance measuring mechanism and the contraction mechanism, on one hand, the device can more conveniently control the extension length of the flexible rule during clinical measurement, and if the flexible rule needs to continuously extend outwards, only a pressing rod is pressed and then the flexible rule is pulled, and if only the flexible rule is pulled, the flexible rule is not pulled; when the flexible rule extends outwards to a certain length and measurement tasks on the abdominal circumference, the hand circumference and the leg circumference are completed, the flexible rule can be straightened and the probe can be driven to carry out measurement work, and infrared rays emitted by the probe can be emitted to the reflecting plate, so that the extending length of the flexible rule can be measured more accurately; and then the data is fed back to the display screen for display, so that errors generated during measurement are effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to an electronic retractable tape measure based on infrared detection. Background Art

[0002] Medical devices refer to instruments, equipment, appliances, in vitro diagnostic reagents and calibrators, materials and other similar or related items that are used directly or indirectly on the human body for the purpose of diagnosis, prevention, monitoring, treatment or relief of disease.

[0003] When measuring abdominal circumference, hand circumference, and leg circumference clinically, a tape measure is needed. When measuring, the ruler scale is observed with the naked eye at the same location. Different people and different positions may cause errors, which will affect medical judgment. For this reason, we provide an electronic retractable soft tape measure based on infrared detection to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to make up for the deficiencies of the prior art and to provide an electronic retractable soft ruler based on infrared detection. Compared with directly observing the scale of the ruler with the naked eye, the device can effectively reduce the error of readings and improve the accuracy of medical judgments.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electronic retractable tape measure based on infrared detection, comprising a shell, wherein a distance measuring mechanism and a retracting mechanism are arranged inside the shell, wherein the distance measuring mechanism comprises an infrared rangefinder body fixedly connected to the upper surface of the shell, a probe is installed on the front of the infrared rangefinder body, and a display screen is installed on the upper surface of the infrared rangefinder body.

[0006] The retracting mechanism includes a rotating rod rotatably mounted on the inner wall of the outer shell, the outer surface of the rotating rod is fixedly connected to a tape measure disk, the inner wall of the tape measure disk is installed with a soft ruler, the outer surface of the rotating rod is fixedly connected to a ratchet, the inner wall of the outer shell is rotatably connected to a connecting rod, and the outer surface of the connecting rod is fixedly connected to a pawl meshing with the ratchet.

[0007] Furthermore, an outlet is provided on the outer surface of the shell, and one end of the tape measure extends to the outside of the shell through the outlet and is fixedly connected to a baffle. The outlet can facilitate the tape measure to extend from the inside of the shell to the outside of the shell, and the baffle can prevent the tape measure from being completely retracted into the shell, thereby facilitating measurement.

[0008] Furthermore, the shaft end of the rotating rod passes through the housing and is fixedly connected with a knob, and the outer surface of the knob is provided with evenly distributed anti-slip grooves. By providing the knob, the contact area of ​​the rotating rod can be increased, thereby facilitating the rotation of the rotating rod.

[0009] Furthermore, a fixing rod is fixedly connected to the inner wall of the shell, a telescopic spring is fixedly connected to the outer surface of the fixing rod, and one end of the telescopic spring away from the fixing rod is fixedly connected to the outer surface of the pawl. By arranging the fixing rod and the telescopic spring, the pawl and the ratchet can be kept in contact, which facilitates the extension or contraction of the tape measure.

[0010] Furthermore, a reserved groove is provided on the outer surface of the shell, and a pressure rod is fixedly connected to the outer surface of the pawl. The end of the pressure rod away from the pawl passes through the reserved groove and extends to the outside of the shell. By providing the pressure rod, the pawl can be easily moved, and by providing the reserved groove, the pressure rod can extend from the inside of the shell to the outside of the shell, which is convenient for operation.

[0011] Furthermore, one end of the pressure rod away from the pawl is fixedly connected with a handle, and the handle can be provided to facilitate the application of external force to the pressure rod, thereby facilitating the pressing of the pressure rod.

[0012] Furthermore, a switch and a charging port are installed on the outer surface of the infrared rangefinder body, and a reflector is fixedly connected to the outer surface of the baffle, and the reflector corresponds to the position of the probe. By setting the switch, the probe can be controlled to perform ranging work, and by setting the charging port, the infrared rangefinder body can be charged. By setting the reflector, the probe can conveniently perform infrared measurement of the extended length of the tape measure to reduce the measurement error.

[0013] Compared with the prior art, the electronic retractable tape measure based on infrared detection has the following beneficial effects:

[0014] 1. The utility model sets the distance measuring mechanism and the contraction mechanism to cooperate with each other. On the one hand, the device can more conveniently control the extended length of the tape measure when performing clinical measurement. If the tape measure wants to continue to extend outward, it can only be achieved by pressing the pressure rod and then pulling the tape measure. If the tape measure is only pulled, the tape measure cannot be extended further. When the tape measure is extended to a certain length and the measurement tasks of the abdominal circumference, the hand circumference and the leg circumference are completed, the tape measure can be straightened and the probe can be driven to perform the measurement. The infrared light emitted by the probe will be projected onto the reflective plate, so that the extended length of the tape measure can be measured more accurately, and then the data can be fed back to the display screen for display, effectively reducing the error generated during measurement.

[0015] 2. The utility model can facilitate the extension of the tape measure from the inside of the shell to the outside of the shell by providing the tape outlet, and can prevent the tape measure from being completely retracted into the shell by providing the baffle, so as to facilitate the measurement work; can increase the contact area of ​​the rotating rod by providing the knob, so as to facilitate the rotation of the rotating rod; can facilitate the toggling of the pawl by providing the pressure rod, and can facilitate the extension of the pressure rod from the inside of the shell to the outside of the shell by providing the reserved groove, so as to facilitate the operation; and can facilitate the application of external force to the pressure rod by providing the handle, so as to facilitate the pressing of the pressure rod. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a side view of the structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the cross-sectional top view of the structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the local structure of the utility model.

[0020] In the figure: 1. shell; 2. distance measuring mechanism; 201. infrared rangefinder body; 202. probe; 203. display screen; 204. switch; 205. charging port; 206. reflector; 3. retracting mechanism; 301. rotating rod; 302. tape measure disc; 303. tape measure; 304. ratchet; 305. connecting rod; 306. pawl; 307. fixing rod; 308. telescopic spring; 309. pressure rod; 310. reserved slot; 311. handle; 312. baffle; 313. knob; 314. tape outlet. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] As described in the background technology, in order to improve the accuracy of clinical measurements of abdominal circumference, wrist circumference, and leg circumference, this embodiment provides an electronic retractable tape measure based on infrared detection. The device can determine the extended length of the tape measure through infrared sensing and display it on a display screen, thereby effectively improving the measurement accuracy.

[0023] See also Figures 1 to 4 The present embodiment proposes an electronic retractable tape measure based on infrared detection, including a shell 1, wherein a distance measuring mechanism 2 and a retracting mechanism 3 are arranged inside the shell 1, wherein the distance measuring mechanism 2 includes an infrared distance measuring device body 201 fixedly connected to the upper surface of the shell 1, a probe 202 is installed on the front of the infrared distance measuring device body 201, and a display screen 203 is installed on the upper surface of the infrared distance measuring device body 201.

[0024] The probe 202 is an existing mechanism, which can emit infrared rays when working, and utilizes the non-diffusion principle of infrared rays during propagation to achieve more accurate clinical measurement. The probe 202 and the display screen 203 are both electrically connected to the infrared rangefinder body 201, and the data measured by the probe 202 can be displayed through the display screen 203.

[0025] Since the data transmission and working principle between the infrared rangefinder body 201, the probe 202 and the display screen 203 are not the objects that need to be protected in this application, they will not be described in detail.

[0026] A switch 204 and a charging port 205 are installed on the outer surface of the infrared rangefinder body 201. By setting the switch 204, the probe 202 can be controlled to perform distance measurement, and by setting the charging port 205, the infrared rangefinder body 201 can be charged.

[0027] The retracting mechanism 3 comprises a rotating rod 301 rotatably sleeved on the inner wall of the housing 1 , a measuring tape disc 302 is fixedly connected to the outer surface of the rotating rod 301 , and a soft ruler 303 is installed on the inner wall of the measuring tape disc 302 .

[0028] like Figure 4 As shown, the soft tape measure 303 is wound around the inner wall of the measuring tape disc 302 , and when the measuring tape disc 302 rotates, the soft tape measure 303 can be retracted or extended, so as to facilitate clinical measurement.

[0029] An outlet 314 is formed on the outer surface of the housing 1 , and one end of the tape measure 303 extends to the outside of the housing 1 through the outlet 314 and is fixedly connected to a baffle 312 .

[0030] By providing the ruler outlet 314, the tape measure 303 can be extended from the inside of the housing 1 to the outside of the housing 1. By providing the baffle 312, the tape measure 303 can be prevented from being completely received in the housing 1, thereby facilitating the measurement work.

[0031] The outer surface of the baffle 312 is fixedly connected with a reflective plate 206 , and the reflective plate 206 corresponds to the position of the probe 202 . By setting the reflective plate 206 , the probe 202 can conveniently perform infrared measurement on the extended length of the tape measure 303 , thereby reducing the measurement error.

[0032] Preferably, a circle of darker area can be set at the center point of the reflective plate 206, so that the staff can observe whether the infrared light emitted by the probe 202 hits the center area of ​​the reflective plate 206 and is reflected, which can effectively improve the measurement accuracy and facilitate clinical use.

[0033] When measuring the extended distance of the tape measure 303, the extended part of the tape measure 303 can be straightened and the probe 202 can be started. The infrared light emitted by the probe 202 will be projected onto the reflective plate 206 and reflected. The extended distance of the tape measure 303 can be calculated based on the time from the emission to the reception of the infrared light and the propagation speed of the infrared light. Compared with manual distance measurement with the naked eye, this can achieve more accurate readings and avoid affecting medical judgment.

[0034] A ratchet 304 is fixedly connected to the outer surface of the rotating rod 301 , a connecting rod 305 is rotatably connected to the inner wall of the housing 1 , and a pawl 306 meshing with the ratchet 304 is fixedly connected to the outer surface of the connecting rod 305 .

[0035] A fixing rod 307 is fixedly connected to the inner wall of the housing 1 , a telescopic spring 308 is fixedly connected to the outer surface of the fixing rod 307 , and one end of the telescopic spring 308 away from the fixing rod 307 is fixedly connected to the outer surface of the pawl 306 .

[0036] By providing the fixing rod 307 and the telescopic spring 308 , the pawl 306 and the ratchet wheel 304 can be kept in contact with each other, so that the extension or contraction of the tape measure 303 is convenient.

[0037] A reserved groove 310 is formed on the outer surface of the housing 1 , and a pressure rod 309 is fixedly connected to the outer surface of the pawl 306 . One end of the pressure rod 309 away from the pawl 306 passes through the reserved groove 310 and extends to the outside of the housing 1 .

[0038] The pressing rod 309 can be provided to facilitate the movement of the pawl 306 , and the reserved groove 310 can be provided to allow the pressing rod 309 to extend from the inside of the housing 1 to the outside of the housing 1 , thereby facilitating operation.

[0039] The combination of the connecting rod 305 and the ratchet wheel 304 can only allow rotational movement in one direction, so that Figure 4 From the distribution state shown, it can be seen that when the exposed end of the tape measure 303 is pulled to move, the ratchet wheel 304 is blocked by the pawl 306 and cannot rotate.

[0040] If the tape measure 303 is to be extended further outward, the pressure rod 309 can be pressed downward to lift the ratchet 306 and no longer block the ratchet 304. The tape measure 303 can then be pulled outward to extend the length of the tape measure 303. After being adjusted to an approximate length, the tape measure 303 can be used for clinical measurement of abdominal circumference, hand circumference, leg circumference, etc.

[0041] Then, the rotating rod 301 is rotated clockwise to reel the extra distance of the tape measure 303 into the tape measure disc 302, so that the extended length of the rotating rod 301 directly corresponds to the length of clinical measurement, and then the tape measure 303 is straightened and the probe 202 is driven to perform measurement, and finally more accurate measurement data can be obtained.

[0042] There is no need to observe the ruler scale with the naked eye, which prevents errors in readings caused by different operators and different positions.

[0043] One end of the pressing rod 309 away from the pawl 306 is fixedly connected with a handle 311 . By providing the handle 311 , it is convenient to apply external force to the pressing rod 309 , so that the pressing rod 309 can be pressed.

[0044] The shaft end of the rotating rod 301 passes through the housing 1 and is fixedly connected with a knob 313. The outer surface of the knob 313 is provided with evenly distributed anti-slip grooves. The knob 313 can increase the contact area of ​​the rotating rod 301 and facilitate the rotation of the rotating rod 301.

[0045] Working principle: When in use, first press down the pressure rod 309 to make the pawl 306 tilt up, and no longer block the rotation of the ratchet wheel 304, then pull the tape measure 303 outward to make one end of the tape measure 303 extend outward for a distance, and then use the extended distance of the tape measure 303 to perform clinical measurement. During measurement, if the extended distance of the tape measure 303 is too long, the knob 313 can be turned clockwise to reel the extended part of the tape measure 303 into the tape measure disk 302. If the extended distance of the tape measure 303 is insufficient, the above steps can be repeated to adjust the extended length of the tape measure 303. After adjustment, the distance that the tape measure 303 is extended is the clinical measurement data, and then two staff members hold the shell 1 and the reflector 206 respectively, and move away from each other so that the tape measure 303 can be straightened, and then the infrared rangefinder body 201 is started to work, so that the probe 202 emits infrared rays. When the infrared rays emitted by the probe 202 hit the central area of ​​the reflector 206 and are reflected, the infrared rangefinder body 201 can calculate the distance based on the time from the emission to the reception of the infrared rays and the propagation speed of the infrared rays, and finally display the data on the display screen 203.

Claims

1. An electronic retractable tape measure based on infrared detection, comprising a housing (1), characterized in that: A distance measuring mechanism (2) and a retracting mechanism (3) are provided inside the housing (1); the distance measuring mechanism (2) comprises an infrared distance measuring instrument body (201) fixedly connected to the upper surface of the housing (1); a probe (202) is installed on the front of the infrared distance measuring instrument body (201); and a display screen (203) is installed on the upper surface of the infrared distance measuring instrument body (201); The retracting mechanism (3) comprises a rotating rod (301) rotatably mounted on the inner wall of the outer shell (1); the outer surface of the rotating rod (301) is fixedly connected to a measuring tape disc (302); the inner wall of the measuring tape disc (302) is provided with a soft ruler (303); the outer surface of the rotating rod (301) is fixedly connected to a ratchet (304); the inner wall of the outer shell (1) is rotatably connected to a connecting rod (305); the outer surface of the connecting rod (305) is fixedly connected to a ratchet pawl (306) meshing with the ratchet (304).

2. The electronic retractable tape measure based on infrared detection according to claim 1, characterized in that: The outer surface of the housing (1) is provided with a ruler outlet (314), and one end of the tape measure (303) extends to the outside of the housing (1) through the ruler outlet (314) and is fixedly connected to a baffle (312).

3. The electronic retractable tape measure based on infrared detection according to claim 1, characterized in that: The rotating shaft end of the rotating rod (301) passes through the housing (1) and is fixedly connected to a knob (313), and the outer surface of the knob (313) is provided with evenly distributed anti-slip grooves.

4. The electronic retractable tape measure based on infrared detection according to claim 1, characterized in that: A fixing rod (307) is fixedly connected to the inner wall of the housing (1), a telescopic spring (308) is fixedly connected to the outer surface of the fixing rod (307), and one end of the telescopic spring (308) away from the fixing rod (307) is fixedly connected to the outer surface of the pawl (306).

5. The electronic retractable tape measure based on infrared detection according to claim 1, characterized in that: The outer surface of the housing (1) is provided with a reserved groove (310), the outer surface of the pawl (306) is fixedly connected with a pressure rod (309), and one end of the pressure rod (309) away from the pawl (306) passes through the reserved groove (310) and extends to the outside of the housing (1).

6. The electronic retractable tape measure based on infrared detection according to claim 5, characterized in that: One end of the pressure rod (309) away from the ratchet (306) is fixedly connected to a handle (311).

7. The electronic retractable tape measure based on infrared detection according to claim 2, characterized in that: A switch (204) and a charging port (205) are installed on the outer surface of the infrared rangefinder body (201), and a reflector (206) is fixedly connected to the outer surface of the baffle (312), wherein the reflector (206) corresponds to the position of the probe (202).

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