A tape tension detector

Abstract

The utility model discloses a kind of braid tension detectors, it is related to mechanics measuring instrument technical field, including pressure part, the pressure measuring element of having sensing element, open-close handle, detection gap is formed between pressure part and pressure measuring element, press open-close handle to make both relative movement extrusion braid to detect tension, detector further includes adjusting part, adjusting part includes operating part, adjusting part and clutch part, adjusting part is at least with one of pressure part, pressure measuring element transmission connection, operating part drives adjusting part to adjust the thickness of detection gap to braid under pressure, clutch part is the reaction force of braid to make operating part and adjusting part disengage cooperation. The braid tension detector of the utility model can be adapted to braid of different thickness.

Description

Technical Field

[0001] This utility model relates to the field of mechanical measuring instruments, specifically to a webbing tension tester. Background Technology

[0002] In the logistics industry, goods need to be packaged and secured with webbing to prevent bumps and damage during transportation. However, the webbing should not be too loose or too tight, as both can damage the goods. Therefore, after packaging, the webbing tension needs to be tested to ensure it is within a suitable range.

[0003] However, webbing comes in different sizes and specifications, such as width and thickness. Currently, the instruments available on the market for testing the tension of webbing and straps are only compatible with a limited range of webbing specifications. Although tension testing can be performed on webbing of different specifications, the test data often fails to reflect the true situation due to poor compatibility. Utility Model Content

[0004] This invention aims to address one of the technical problems in related technologies to a certain extent. To this end, this invention provides a webbing tension testing instrument that is adaptable to webbing of different thicknesses.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A webbing tension tester includes a pressure-applying component, a pressure-measuring component with a sensing element, and an opening / closing handle. A detection gap is formed between the pressure-applying component and the pressure-measuring component. Pressing the opening / closing handle causes the two components to move relative to each other, compressing the webbing to detect tension. The tester also includes an adjusting component, which includes an operating part, an adjusting part, and a clutch part. The adjusting part is driven to at least one of the pressure-applying component and the pressure-measuring component. The operating part drives the adjusting part to adjust the thickness of the detection gap until the webbing is compressed. The clutch part is disengaged from the operating part and the adjusting part by the reaction force of the webbing.

[0007] This utility model discloses a webbing tension tester. When testing the tension of the webbing, it is placed in the testing gap. After pressing the opening and closing handle, the pressure-applying component and the pressure-measuring component move closer to each other and squeeze the webbing. When the webbing is squeezed, it will also generate a reaction force. The greater the tension of the webbing, the greater the reaction force generated. The reaction force of the webbing can act directly on the pressure-applying component and the pressure-measuring component, and can be sensed by the sensing element of the pressure-measuring component. Since the magnitude of the reaction force of the webbing is related to its tension, the tension of the webbing can be obtained by converting the data detected by the sensing element.

[0008] The detector of this application is adaptable to webbing of different thicknesses, and the thickness of the detection gap matches the thickness of the webbing. An adjusting mechanism can adjust the position of at least one of the pressure-applying component and the pressure-measuring component, thereby changing the thickness of the detection gap formed by the pressure-applying component and the pressure-measuring component. The adjusting mechanism includes an operating part, an adjusting part, and a clutch part. The operating part is operated by the user and can be driven by a force provided by the user. Since the adjusting part is connected to at least one of the pressure-applying component and the pressure-measuring component, it can change the position of at least one of the pressure-applying component and the pressure-measuring component during the driven movement. During the adjustment of the detection gap thickness (e.g., reducing the gap thickness), the pressure-applying component and the pressure-measuring component will move closer to each other and simultaneously contact the webbing. As the operating part continues to be operated, the force exerted on the webbing by the pressure-applying component and the pressure-measuring component will continuously increase, and the reaction force from the webbing will also continuously increase and be transmitted to the clutch part. Once the reaction force of the webbing reaches a preset value, the clutch part will disengage the operating part and the adjusting part, preventing further reduction in the thickness of the detection gap. At this time, the tension can be detected by pressing the opening and closing handle.

[0009] Under the action of the clutch, the preload applied by the pressure-applying component and the pressure-measuring component to webbing of different thicknesses is the same. In this way, the tension value of webbing of different thicknesses can be measured more accurately. Users do not need to visually check the fit between the thickness of the detection gap and the webbing when adjusting the thickness of the detection gap, which makes the operation more convenient for users.

[0010] Optionally, the clutch engages with both the operating part and the adjusting part. The operating part transmits force to the adjusting part through the clutch. The clutch, acting as a force transmission link between the operating part and the adjusting part, disengages from either the operating part or the adjusting part due to the reaction force of the webbing. The clutch, as a force transmission link between the operating part and the adjusting part, maintains the transmission relationship between them. When the clutch disengages from either part, the force transmission between the operating part and the adjusting part is interrupted.

[0011] Optionally, the clutch is elastically loaded and maintains a separable engagement with either the operating part or the adjusting part. Under the action of elastic force, the clutch maintains engagement with either the operating part or the adjusting part, while the driving force from the operating part, which can be continuously transmitted to the adjusting part, is counteracted by the reaction force from the webbing. This causes the clutch to overcome the elastic force and change position, interrupting the transmission between the operating part and the adjusting part. Because the clutch is elastically loaded, it can reset under the action of elastic force once the conditions are met, thus reconnecting the operating part and the adjusting part.

[0012] Optionally, the operating part is fitted onto the adjusting part, and the two rotate synchronously. One of them has a mounting hole, and the other has a groove. The clutch part is a slider housed in the mounting hole. A first elastic element is provided in the mounting hole. The first elastic element applies pressure to the slider, causing a portion of the slider to extend out of the mounting hole and engage with the groove. The slider simultaneously engages with both the mounting hole and the groove, and under the elastic force of the first elastic element, the slider can maintain a mating state with the groove. As the operating part rotates, the slider pushes the sidewall of the groove, causing the adjusting part to rotate synchronously with the operating part to adjust the thickness of the detection gap. When the pressure-applying element and the pressure-measuring element contact and apply pressure to the webbing, the webbing will generate a reaction force. The slider needs a greater force to overcome the reaction force and allow the adjusting part to continue rotating. As the reaction force gradually increases, the slider will overcome the elastic force, exit the groove, and retract into the mounting hole, so that there is only a fitted relationship between the operating part and the adjusting part, and the driving force can no longer be transmitted.

[0013] Optionally, the detector further includes a housing, the pressure measuring component is fixedly mounted on the housing, and the pressure applying component includes a pressure rod and a connecting part connecting the pressure rod. The connecting part is slidably engaged with the housing, and the adjusting part is threadedly engaged with the connecting part. The adjusting part is driven to rotate by the operating part. The pressure applying component can move relative to the housing through the sliding engagement between the connecting part and the housing, allowing the thickness of the detection gap to be adjusted. The pressure measuring component and the pressure applying component can generate relative motion to compress the webbing to detect tension. The adjusting part can rotate under the drive of the operating part and drive the connecting part to move axially relative to the adjusting part through the threaded engagement, thereby changing the position of the pressure applying component relative to the housing. The pressure measuring component is fixedly mounted on the housing and can maintain a fixed position, so the position of the sensing element can be kept fixed. Therefore, the wire connection of the sensing element has good stability and will not affect the detection accuracy.

[0014] Optionally, the opening and closing handle includes a first handle fixed to the housing and a second handle rotatably engaged with the housing. The adjusting part is elastically loaded and abuts against the second handle. Pressing the second handle pushes the adjusting part to translate in the detection gap thickness direction. A threaded fit exists between the adjusting part and the connecting part; therefore, when the adjusting part is pushed by the second handle, it can drive the connecting part to synchronously translate in the detection gap thickness direction, thereby allowing the pressure-applying component and the pressure-measuring component to move relative to each other and compress the webbing for tension detection. Under the action of elastic force, the adjusting part can remain abutting against the second handle. After the second handle is released, the adjusting part and the pressure-applying component can return to their original positions with the second handle, while the second handle returns to its original position relying on the elastic force transmitted from the adjusting part.

[0015] Optionally, the connecting part is provided with a through groove, the second handle passes through the through groove and rotatably engages with the housing, the top wall of the through groove is provided with a threaded hole, and the adjusting part passes through the threaded hole and abuts against the second handle. The through groove allows the second handle and the connecting part to maintain a distance without direct contact. Thus, during the adjustment of the detection gap thickness, the second handle will not obstruct the connecting part, and when the second handle is pressed, the connecting part will not interfere with the rotation of the second handle relative to the housing. Furthermore, the adjusting part can also abut against the second handle within the through groove, allowing the adjusting part to engage with both the connecting part and the second handle simultaneously without requiring a complex structure.

[0016] Optionally, the pressure measuring component includes a pressure measuring rod, and the pressure applying component includes two pressure applying rods symmetrically arranged relative to the pressure measuring rod. Pressing the opening and closing handle causes the pressure measuring rod and the pressure applying rods to compress the webbing to detect its tension. During the tension detection process, the webbing is simultaneously compressed by the pressure measuring rod and the two pressure applying rods, causing the webbing to be compressed to form an angle. The force is concentrated on the middle pressure measuring rod, making it easy for the sensing element to detect. Furthermore, the symmetrical arrangement of the two pressure applying rods ensures that the force is evenly distributed at both ends of the webbing, avoiding excessive pressure on one side and causing local deformation. It also ensures that the reaction forces on the two pressure applying rods are the same, avoiding uneven thickness of the detection gap caused by a large difference in the force between the two, thus ensuring that the sensing element can accurately and truthfully reflect the webbing tension.

[0017] Optionally, the detector includes a housing, and the pressure measuring element is mounted on the housing. The pressure measuring element includes a pressure measuring rod that squeezes the webbing during the webbing tension detection process. The sensing element includes a tension detection plate and a sensor. The sensor and the pressure measuring rod are respectively located on both sides of the tension detection plate. The sensor is located in the middle of the tension detection plate to detect its deformation stress. The tension detection plate has a hollowed-out portion at the mounting position of the sensor to weaken its rigidity. The middle part of the pressure measuring rod protrudes and abuts against the middle position of the tension detection plate. The position of the sensing element is fixed, so the connection stability of the sensing element's wires is good and will not affect the detection accuracy. The pressure measuring rod is in direct contact with the webbing, and the reaction force of the webbing is concentrated and transmitted to the tension detection plate through the protruding portion in the middle, avoiding the dispersion of force transmission and affecting the detection accuracy. The tension detection plate can produce elastic deformation after being subjected to force. The sensor can detect the deformation stress generated when the tension detection plate deforms, so as to calculate the webbing tension. The hollowed-out sections weaken the rigidity of the tension detection plate, making it more susceptible to deformation. This allows the sensor to detect minute forces, improving the sensitivity of the sensing element. Simultaneously, it amplifies the effect of the webbing's reaction force, thus enhancing tension detection accuracy. The center of the tension detection plate is its weakest point; placing the sensor and force-bearing components there further improves the sensitivity of the sensing element and the accuracy of tension detection.

[0018] Optionally, the pressure-applying component includes a rotatable pressure rod with multiple positioning slots for engaging the webbing. These slots are distributed circumferentially along the pressure rod and have different widths. The centerlines of the width directions of the positioning slots are the same and perpendicular to the centerline of the protruding portion in the center of the pressure-measuring rod. During testing, the webbing is engaged in the positioning slots, allowing them to maintain its fixed position and also limiting its position relative to the sensing unit. Although the different positioning slots have different widths, they all concentrate the reaction force of the webbing at the center of the pressure-measuring rod, ensuring consistent testing accuracy for webbing of different specifications. Switching between positioning slots can be achieved by rotating the pressure rod, making operation simple and convenient. Although multiple positioning slots have different widths to accommodate webbing of various widths, the width of some webbing will not be exactly the same as the width of the positioning slot. Usually, after the webbing is inserted into the positioning slot, the relative position of the detector and the webbing needs to be adjusted so that the axis of the webbing is as close as possible to the axis of the positioning slot in the width direction. Because the width of the positioning slot is close to that of the webbing, it is easier for their axes to coincide or nearly coincide.

[0019] These features and advantages of this utility model will be disclosed in detail in the following specific embodiments and accompanying drawings. The preferred embodiments or means of this utility model will be shown in detail in conjunction with the accompanying drawings, but are not intended to limit the technical solutions of this utility model. In addition, each of these features, elements and components appearing in the following text and drawings is multiple and is labeled with different symbols or numbers for convenience, but all represent parts with the same or similar structure or function. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings:

[0021] Figure 1 This demonstrates how a webbing tension tester clamps the webbing.

[0022] Figure 2 This is a shape diagram of the webbing tension detection in this utility model.

[0023] Figure 3 This is a schematic diagram of the structure of the webbing tension detector in this utility model.

[0024] Figure 4 This is a cross-sectional view of the webbing tension tester of this utility model.

[0025] Figure 5 This is an exploded view of the adjusting component and the side pressure component of the webbing tension detector in this utility model.

[0026] Figure 6 This is a schematic diagram of the structure of the operating part of this utility model.

[0027] Figure label:

[0028] Casing 100, Display screen 110;

[0029] Pressure component 200, pressure rod 210, positioning groove 220, connecting part 230, through groove 240, threaded hole 250;

[0030] Pressure testing component 300, pressure testing rod 310, tension detection plate 320, hollow part 330, boss 340, assembly rod 350, nut 360;

[0031] Opening / closing handle 400, first handle 410, second handle 420;

[0032] Detection gap 500;

[0033] Adjustment component 600, operation part 610, adjustment part 620, clutch part 630, mounting hole 640, groove 650, second elastic element 660, recessed hole 670. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described are intended to explain this utility model and should not be construed as limiting it.

[0035] The terms "an embodiment," "example," or "trademark" used in this specification refer to a particular feature, structure, or characteristic described in connection with the embodiment itself that may be included in at least one embodiment disclosed in this utility model. The phrase "in one embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment.

[0036] Reference Figures 1 to 6 This utility model discloses a webbing tension tester, including a housing 100, a pressure-applying component 200, a pressure-measuring component 300, and an opening / closing handle 400. A detection gap 500 is formed between the pressure-applying component 200 and the pressure-measuring component 300. The webbing is placed in the detection gap 500 when the tension is being tested. Pressing the opening / closing handle 400 causes relative movement between the pressure-applying component 200 and the pressure-measuring component 300, compressing the webbing. Since the webbing is taut and under tension when packaging goods, it generates a reaction force directly acting on the pressure-applying component 200 and the pressure-measuring component 300 when compressed. The greater the tension of the webbing, the greater the reaction force. The pressure-measuring component 300 is equipped with a sensing element that can detect the magnitude of the reaction force acting on it. Because the magnitude of the reaction force of the webbing is related to its tension, the tension of the webbing can be calculated using a formula.

[0037] The testing instrument also includes an adjustment component 600, which includes an operating part 610 and an adjustment part 620. The adjustment part 620 is drivenly connected to at least one of the pressure-applying component 200 and the pressure-measuring component 300. The operating part 610 is operated by the user and can drive the adjustment part 620 by the force provided by the user. Since the adjustment part 620 is drivenly connected to at least one of the pressure-applying component 200 and the pressure-measuring component 300, it can change the position of at least one of the pressure-applying component 200 and the pressure-measuring component 300 during the driven movement, thereby changing the thickness of the detection gap 500. The thickness of the detection gap 500 matches the thickness of the webbing, so the webbing tension tester can be adapted to webbing of different thicknesses.

[0038] In this application, the pressure measuring component 300 includes a pressure measuring rod 310, and the pressure applying component 200 includes two pressure applying rods 210. The two pressure applying rods 210 are symmetrically arranged relative to the pressure measuring rod 310. Pressing the opening and closing handle 400 causes the pressure measuring rod 310 and the pressure applying rods 210 to squeeze the webbing to detect its tension. During the tension detection process, the webbing is simultaneously squeezed by the pressure measuring rod 310 and the two pressure applying rods 210, causing the webbing to be squeezed and form an angle. The pressure measuring rod 310 applies pressure to the front side of the webbing, and the pressure applying component 200 applies pressure to the back side of the webbing, which can cause the webbing to form a "V" shape with both ends raised upwards and the middle concave downwards (e.g., ...). Figure 2 (As shown).

[0039] The force will be concentrated on the middle pressure measuring rod 310, making it easy for the sensing element to detect. The two pressure rods 210 are symmetrically arranged, which can make the force on both ends of the webbing uniform, avoiding excessive pressure on one side and causing local deformation. At the same time, the reaction force on the two pressure rods 210 is the same, avoiding the phenomenon of uneven thickness of the detection gap 500 due to a large difference in the force on the two. This ensures that the sensing element can accurately and truly reflect the tension of the webbing.

[0040] The opening and closing angle of the 400° handle is fixed, so the V-shape formed by the webbing has the same included angle each time it is tested. The webbing tension tester calculates how much force is required to bend the webbing into a V-shape at a fixed angle. For the tension calculation formula, only the magnitude of the reaction force changes.

[0041] More specifically, the opening and closing angle of the opening and closing handle 400 is fixed from the start of driving the relative movement of the pressure-applying component 200 and the pressure-measuring component 300 until the movement stops.

[0042] To ensure the accuracy of the tension calculation formula and its applicability to webbing of different thicknesses, the pressure applying element 200 and the pressure measuring element 300 apply a fixed amount of pre-pressure to the webbing before testing its tension. This pre-pressure is the same for webbing of different thicknesses. The magnitude of the pre-pressure is adjusted by the adjusting element 600. As the pressure applying element 200 and the pressure measuring element 300 contact the webbing, the thickness of the detection gap 500 is further adjusted via the adjusting element 600, gradually increasing the force exerted on the webbing by these two elements.

[0043] While the webbing is subjected to pre-pressure from the pressure-applying component 200 and the pressure-measuring component 300, it also generates a reaction force acting on the pressure-applying component 200 and the pressure-measuring component 300. The adjusting component 600 also includes a clutch part 630, and the reaction force from the webbing is also transmitted to the clutch part 630. When the pre-pressure applied to the webbing by the pressure-applying component 200 and the pressure-measuring component 300 reaches a preset value, the clutch part 630, driven by the reaction force, disengages the operating part 610 and the adjusting part 620. The driving force of the operating part 610 cannot be transmitted to the adjusting part 620, and the thickness of the detection gap 500 is further reduced. At this time, the opening and closing handle 400 can be pressed to detect the tension.

[0044] Under the action of the clutch 630, webbing of different thicknesses can be subjected to the same pre-pressure. In this way, the tension value of webbing of different thicknesses can be measured more accurately. When adjusting the thickness of the detection gap 500, the user does not need to visually check the fit between the thickness of the detection gap 500 and the webbing, which makes the operation more convenient for the user.

[0045] The pressure measuring element 300 is fixedly mounted on the housing 100, while the pressure applying element 200 is movable relative to the housing 100 to press the webbing against the pressure measuring element 300 or to adjust the thickness of the detection gap 500 by the drive of the adjusting element 600. Because the position of the pressure measuring element 300 is fixed, the position of the sensing element can also remain fixed with the pressure measuring element 300 during the webbing tension detection process. Therefore, the wire connection of the sensing element has good stability and will not affect the detection accuracy.

[0046] Reference Figure 4 and Figure 5 Based on the above embodiments, in one embodiment of the present invention, the clutch part 630 cooperates with the operating part 610 and the adjusting part 620 respectively. The operating part 610 transmits force to the adjusting part 620 through the clutch part 630. The clutch part 630 is disengaged from one of the operating part 610 and the adjusting part 620 by the reaction force of the webbing.

[0047] The clutch 630 serves as a force transmission link between the operating part 610 and the adjusting part 620, maintaining the transmission engagement between them. When the clutch 630 disengages from either of them, the force transmission between the operating part 610 and the adjusting part 620 will be interrupted.

[0048] Reference Figures 4 to 6 Based on the above embodiments, in one embodiment of the present invention, the clutch part 630 is elastically loaded and maintains a separable engagement with one of the operation part 610 and the adjustment part 620.

[0049] The clutch 630 is engaged with either the operating part 610 or the adjusting part 620 under the action of elastic force, and the driving force of the operating part 610 can be continuously transmitted to the adjusting part 620. The reaction force from the webbing acts on the clutch 630, so that the clutch 630 can overcome the elastic force and produce a position change, interrupting the transmission between the operating part 610 and the adjusting part 620.

[0050] Specifically:

[0051] The operating part 610 is mounted on the adjusting part 620 and the two can rotate synchronously. The adjusting part 620 is provided with a mounting hole 640, and the operating part 610 is provided with a groove 650. The clutch part 630 is a slider that is accommodated in the mounting hole 640. The mounting hole 640 is provided with a first elastic element (not shown in the figure). The first elastic element applies pressure to the slider so that part of the slider extends out of the mounting hole 640 and is engaged in the groove 650.

[0052] The slider simultaneously engages with the mounting hole 640 and the groove 650. Under the elastic force of the first elastic element, the slider maintains its engagement with the groove 650. As the operating part 610 rotates, the slider pushes the side wall of the groove 650, causing the adjusting part 620 to rotate synchronously with the operating part 610, thereby adjusting the thickness of the detection gap 500. When the pressure-applying element 200 and the pressure-measuring element 300 contact and apply pressure to the webbing, the webbing will generate a reaction force. The slider needs greater force to overcome the reaction force and allow the adjusting part 620 to continue rotating. As the reaction force gradually increases, the slider will overcome the elastic force, exit the groove 650, and retract into the mounting hole 640, so that there is only a fitted relationship between the operating part 610 and the adjusting part 620, and the driving force can no longer be transmitted.

[0053] The slider is a rigid sphere, making the contact surface between the slider and the groove 650 an arc surface, and the depth of the groove 650 is less than the radius of the slider; the first elastic element is a spring.

[0054] The slider can also be a cylindrical structure with a ball head.

[0055] Of course, it is conceivable that the positions of the mounting hole 640 and the groove 650 can also be interchanged.

[0056] Unlike the above embodiments, in another embodiment of this utility model, the clutch part includes two separate clutch structures. One clutch structure is connected to the operating part, and the other clutch structure is connected to the adjusting part. The two clutch structures are engaged and disengaged when the reaction force increases, so that the operating part and the adjusting part are disengaged.

[0057] For example, one clutch mechanism can be a first magnet, and the other a second magnet, with the two engaging magnetically. Other commonly used clutch mechanisms can also be used, such as friction plates or elastically loaded inclined plane structures.

[0058] Reference Figure 4 and Figure 5 Based on the above embodiments, in one embodiment of this utility model, the sensing element includes a tension detection plate 320 and a sensor (not shown in the figure, usually mounted on the tension detection plate 320). The sensor and the pressure measuring rod 310 are respectively disposed on both sides of the tension detection plate 320. The sensor is disposed in the middle of the tension detection plate 320 to detect its deformation stress. The tension detection plate 320 is provided with a hollow part 330 at the mounting part of the sensor to weaken its rigidity. The middle part of the pressure measuring rod 310 protrudes and abuts against the middle part of the tension detection plate 320. The tension detection plate 320 is a rectangular plate, and its four corners are fixed to the outer shell.

[0059] The sensing element is fixed in position, and the pressure measuring rod 310 is in direct contact with the webbing. The reaction force of the webbing is concentrated and transmitted to the tension detection plate 320 through the central protrusion, so as to avoid the force transmission being dispersed and affecting the detection accuracy. The tension detection plate 320 can produce elastic deformation after being subjected to force. The sensor can detect the deformation stress generated when the tension detection plate 320 deforms, so as to calculate the webbing tension.

[0060] The hollowed-out portion 330 weakens the rigidity of the tension detection plate 320, making it easier to deform. This allows the sensor to detect minute forces, improving the sensitivity of the sensing element. At the same time, it amplifies the effect of the webbing reaction force, thereby improving the tension detection accuracy.

[0061] Because the four corners of the tension detection plate 320 are all bolted to the outer shell to fix the position of the tension detection plate 320, the rigidity of the bolted parts of the tension detection plate 320 is strengthened. Therefore, the middle part away from the four corners has lower rigidity and is more prone to deformation. The hollow part 330, the sensor, and the contact point with the pressure measuring rod 310 are all arranged in this area, which can further improve the sensitivity of the sensing element and the tension detection accuracy.

[0062] The pressure measuring rod 310 has a protruding boss 340 and an assembly rod 350 in the middle. The boss 340 and the assembly rod 350 have the same axis. The assembly rod 350 passes through the tension detection plate 320 so that the boss 340 abuts against the tension detection plate 320. A nut 360 is mounted on the assembly rod 350. The nut 360 presses against the tension detection plate 320, so that the tension detection plate 320 is clamped between the nut 360 and the boss 340.

[0063] The sensor is a strain gauge or a pressure gauge.

[0064] The cutout portion 330 is an elongated through-hole penetrating the tension detection plate 320, comprising two independent sections. The first through-hole is arranged circumferentially along the mounting rod 350 to include the central region of the tension detection plate 320. The second through-hole is located on the other side of the mounting rod 350, also circumferentially along the mounting rod 350, and is larger in size to include the central region of the tension detection plate 320 and the first through-hole. The second through-hole facilitates deformation of the area it encompasses (including the central region and the area where the first through-hole is located), while the first through-hole also facilitates deformation of the area it encompasses. The combined effect of the two through-holes makes it easier for the central region of the tension detection plate 320 to sense minute forces.

[0065] Reference Figures 1 to 5 Based on the above embodiments, in one embodiment of this utility model, the pressure rod 210 is rotatable relative to the pressure measuring rod 310. The pressure rod 210 has multiple recessed positioning grooves 220 for securing the webbing. The multiple positioning grooves 220 are distributed circumferentially along the pressure rod 210 and have different widths. The centerlines of the multiple positioning grooves 220 in the width direction are the same and perpendicular to the centerline of the assembly rod 350. Figure 5 As shown, Figure 5 The dotted line indicated by L1 is the center line of the positioning groove 220 in the width direction, and the dotted line indicated by L2 is the center line of the assembly rod 350.

[0066] During testing, the webbing is inserted into the positioning groove 220, which keeps the webbing in a fixed position and limits the position of the webbing relative to the sensing unit. Although different positioning grooves 220 have different widths, they can all concentrate the reaction force of the webbing in the middle of the pressure measuring rod 310, ensuring that the testing accuracy of webbing of different specifications is consistent.

[0067] The ideal measurement condition is that after the webbing is inserted into the positioning groove 220, the axis of the assembly rod 350 is perpendicular to the axis of the webbing width direction.

[0068] Although the multiple positioning slots 220 have different widths to accommodate webbing of various widths, the width of some webbing will not be exactly the same as the width of the positioning slot 220 (for example, the slot width is 5cm and the webbing width is 4.5cm). Usually, after the webbing is inserted into the positioning slot 220, the relative position of the detector and the webbing needs to be adjusted so that the axis of the webbing is as close as possible to the axis of the positioning slot 220 in the width direction. Because the width of the positioning slot 220 is close to that of the webbing, it is easier for their axes to coincide or nearly coincide, so that the axis of the assembly rod 350 is perpendicular or nearly perpendicular to the axis of the webbing in the width direction.

[0069] The positioning slot 220 can be switched by rotating the pressure rod 210, which is simple and convenient to operate.

[0070] In addition, the pressure rod can also be set as an extendable structure, including two sections. The positioning groove is formed by the two sections together. When one section is stretched, the other section can move symmetrically and synchronously (symmetrical movement, that is, moving closer or further away from each other, such as some mobile phone holders), so that the center of the formed positioning groove remains unchanged.

[0071] Reference Figure 4 and Figure 5 Based on the above embodiments, in one embodiment of this utility model, the pressure member 200 further includes a connecting part 230 connecting the pressure rod 210. The pressure rod 210 is rotatably connected to the connecting part 230, and the connecting part 230 is slidably engaged with the housing 100. The adjusting part 620 is driven by the operating part 610 to adjust the position of the connecting part 230 relative to the housing 100, thereby adjusting the relative position of the pressure rod 210 and the pressure measuring rod 310 to achieve the purpose of adjusting the thickness of the detection gap 500.

[0072] The transmission connection between the adjusting part 620 and the connecting part 230 is a threaded connection. The adjusting part 620 has a rod-shaped structure, including a threaded section that threadedly engages with the connecting part 230. Another section of the adjusting part 620 has a mounting hole 640. The operating part 610 is a knob structure. The adjusting part 620 is inserted into the operating part 610. The clutch part 630 maintains the engagement between the adjusting part 620 and the operating part 610, ensuring their synchronous rotation and restricting the rotation of the adjusting part 620 relative to the operating part 610. Thus, when the operating part 610 rotates, the adjusting part 620 rotates synchronously. The connecting part 230, due to its sliding engagement with the housing 100, has its rotation restricted. Therefore, it can move axially along the adjusting part 620 during its rotation through its threaded engagement with the adjusting part 620.

[0073] As the reaction force of the webbing on the pressure bar 210 gradually increases, the adjustment part 620 requires a larger torque to rotate, eventually causing the clutch part 630 to disengage from the operation part 610.

[0074] Reference Figure 3 and Figure 4 Based on the above embodiments, in one embodiment of the present invention, the opening and closing handle 400 includes a first handle 410 fixed to the housing 100 and a second handle 420 rotatably engaged with the housing 100. The adjusting part 620 is elastically loaded and abuts against the second handle 420. Pressing the second handle 420 pushes the adjusting part 620 to translate in the thickness direction of the detection gap 500.

[0075] The adjusting part 620 and the connecting part 230 are threaded together. Therefore, when the adjusting part 620 is pushed by the second handle 420, it can drive the connecting part 230 to move synchronously in the thickness direction of the detection gap 500, so that the pressure member 200 and the pressure measuring member 300 can move relative to each other to squeeze the webbing for tension detection. Under the action of elastic force, the adjusting part 620 can remain in abutting state with the second handle 420. After the second handle 420 is released, the adjusting part 620 and the pressure member 200 can be reset with the second handle 420, and the second handle 420 resets by the elastic force transmitted from the adjusting part 620.

[0076] A second elastic element 660 is provided inside the operating part 610. The second elastic element 660 applies pressure to the adjusting part 620, keeping the adjusting part 620 in contact with the second handle 420. In fact, since the adjusting part 620 is axially moved by the push of the second handle 420 during tension detection, the relative position of the adjusting part 620 and the housing 100 does not change under other circumstances. At the same time, the position of the second handle 420 is not changed by adjustment. Therefore, the distance by which the second handle 420 pushes the adjusting part 620 axially is fixed. The second handle 420 only needs to keep the adjusting part 620 in contact with the second handle 420 during the process from the beginning of pushing the connecting part 230 to the end. Even if the second handle 420 and the adjusting part 620 are initially spaced apart, it will not affect the detection result.

[0077] The groove 650 is an elongated groove 650, which is arranged along the axial direction of the adjusting part 620, so that the clutch part 630 can move axially in the groove 650 when the adjusting part 620 is pushed by the second handle 420.

[0078] The operating part 610 is provided with a regular hexagonal recess 670. The adjusting part 620 extends into the recess 670. The hexagonal recess 670 has six vertical sidewalls, and a groove 650 is formed between two sidewalls, that is, the operating part 610 is provided with six grooves 650. When the clutch part 630 retracts into the mounting hole, the clutch part 630 can remain in contact with the inner wall of the recess 670 under the action of the first elastic member. As the operating part 610 continues to rotate, the clutch part 630 will gradually extend and engage with another groove 650. During operation, the user can feel the vibration generated when the clutch part 630 engages with the groove 650, which can serve as a prompt that the thickness adjustment of the detection gap 500 is in place.

[0079] The second elastic element 660 is located in the recess 670.

[0080] Of course, when the thickness of the detection gap 500 is adjusted to the correct position, the rotation of the operating part 610 will lose the resistance from the clutch part 630 as the clutch part 630 retracts into the mounting hole 640. The user can clearly perceive this change during operation, which can also serve as a prompt. The prompt generated by the cooperation between the clutch part 630 and the groove 650 is more of a vibration feedback. The combination of the two has a better prompting effect.

[0081] The reverse rotation operation unit 610 can drive the adjustment unit 620 to reverse to increase the thickness of the detection gap 500, which facilitates the separation of the detector from the webbing.

[0082] Reference Figure 4 and Figure 5 Based on the above embodiments, in one embodiment of the present utility model, the connecting part 230 is provided with a through groove 240, the second handle 420 passes through the through groove 240 and rotates with the housing 100, the top wall of the through groove 240 is provided with a threaded hole 250, and the adjusting part 620 passes through the threaded hole 250 and abuts against the second handle 420.

[0083] The through groove 240 allows the second handle 420 and the connecting part 230 to maintain a distance without direct contact. In this way, the second handle 420 will not obstruct the connecting part 230 during the adjustment of the detection gap 500 thickness. When the second handle 420 is pressed, the connecting part 230 will not interfere with the rotation of the second handle 420 relative to the housing 100. The adjusting part 620 can also abut against the second handle 420 in the through groove 240, so that the adjusting part 620 can cooperate with the connecting part 230 and the second handle 420 simultaneously without the need for a complex structure.

[0084] like Figure 1 As shown, based on the above embodiments, in one embodiment of this utility model, the housing 100 is further provided with a display screen 110, which can display the tension value of the webbing and other information (such as power, numerical unit, etc.).

[0085] The above are merely specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the contents described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. A webbing tension tester, comprising a pressure-applying component (200), a pressure-measuring component (300) with a sensing element, and an opening / closing handle (400), wherein a detection gap (500) is formed between the pressure-applying component (200) and the pressure-measuring component (300), and pressing the opening / closing handle (400) causes the two components to move relative to each other, compressing the webbing to detect tension, characterized in that, The detector also includes an adjustment component (600), which includes an operating part (610), an adjustment part (620), and a clutch part (630). The adjustment part (620) is driven to at least one of the pressure application part (200) and the pressure measuring part (300). The operating part (610) drives the adjustment part (620) to adjust the thickness of the detection gap (500) to the point that the webbing is compressed. The clutch part (630) is disengaged from the operating part (610) and the adjustment part (620) by the reaction force of the webbing.

2. The webbing tension tester according to claim 1, characterized in that, The clutch part (630) cooperates with the operating part (610) and the adjusting part (620) respectively. The operating part (610) transmits force to the adjusting part (620) through the clutch part (630). The clutch part (630) is disengaged from either the operating part (610) or the adjusting part (620) by the reaction force of the webbing.

3. The webbing tension tester according to claim 2, characterized in that, The clutch (630) is elastically loaded and maintains a separable engagement with either the operating part (610) or the adjusting part (620).

4. The webbing tension tester according to claim 3, characterized in that, The operating part (610) is mounted on the adjusting part (620), and the two rotate synchronously. One of them is provided with a mounting hole (640), and the other is provided with a groove (650). The clutch part (630) is a slider accommodated in the mounting hole (640). A first elastic element (660) is provided in the mounting hole (640). The first elastic element (660) applies pressure to the slider so that part of the slider extends out of the mounting hole (640) and is engaged in the groove (650).

5. The webbing tension tester according to claim 1, characterized in that, The detector also includes a housing (100), the pressure measuring element (300) is fixedly installed on the housing (100), the pressure applying element (200) includes a pressure applying rod (210) and a connecting part (230) connecting the pressure applying rod (210), the connecting part (230) is slidably engaged with the housing (100), the adjusting part (620) is threadedly engaged with the connecting part (230), and the adjusting part (620) is driven to rotate by the operating part (610).

6. The webbing tension tester according to claim 5, characterized in that, The opening and closing handle (400) includes a first handle (410) fixed to the housing (100) and a second handle (420) rotatably engaged with the housing (100). The adjusting part (620) is elastically loaded and abuts against the second handle (420). Pressing the second handle (420) pushes the adjusting part (620) to translate in the thickness direction of the detection gap (500).

7. The webbing tension tester according to claim 6, characterized in that, The connecting part (230) is provided with a through groove (240), the second handle (420) passes through the through groove (240) and is rotatably engaged with the housing (100), the top wall of the through groove (240) is provided with a threaded hole (250), and the adjusting part (620) passes through the threaded hole (250) and abuts against the second handle (420).

8. The webbing tension tester according to any one of claims 1 to 7, characterized in that, The pressure measuring component (300) includes a pressure measuring rod (310), and the pressure applying component (200) includes two pressure applying rods (210). The two pressure applying rods (210) are symmetrically arranged relative to the pressure measuring rod (310). Pressing the opening and closing handle (400) causes the pressure measuring rod (310) and the pressure applying rod (210) to squeeze the webbing to detect its tension.

9. The webbing tension tester according to any one of claims 1 to 7, characterized in that, The detector includes a housing (100), and the pressure measuring element (300) is mounted on the housing (100). The pressure measuring element (300) includes a pressure measuring rod (310) that squeezes the webbing during the webbing tension detection process. The sensing element includes a tension detection plate (320) and a sensor. The sensor and the pressure measuring rod (310) are respectively located on both sides of the tension detection plate (320). The sensor is located in the middle of the tension detection plate (320) to detect its deformation stress. The tension detection plate (320) has a hollow part (330) at the mounting position of the sensor to weaken its rigidity. The middle part of the pressure measuring rod (310) protrudes and abuts against the middle position of the tension detection plate (320).

10. The webbing tension tester according to claim 9, characterized in that, The pressure member (200) includes a rotatable pressure rod (210), which has a plurality of positioning grooves (220) for clamping webbing. The plurality of positioning grooves (220) are distributed along the circumference of the pressure rod (210) and have different widths. The center lines of the plurality of positioning grooves (220) in the width direction are the same and perpendicular to the center line of the protruding part in the middle of the pressure measuring rod (310).

Images