Tension measuring device

Abstract

The utility model is suitable for the field of tension measuring instruments, and discloses a tension measuring device, which comprises a shell, a tension sensing wheel, a wire passing wheel, a tension sensor, a PCB (printed circuit board), a controller and a storage battery. An electric quantity indicating circuit is arranged on the PCB; the electric quantity indicating circuit comprises a plurality of electric quantity indicating lamps arranged side by side, and the power output end of the storage battery is connected with the electric quantity indicating circuit. The housing is provided with a plurality of through holes for exposing the power supply quantity indicating lamps. According to the utility model, the electric quantity indicating circuit comprising the electric quantity indicating lamp is arranged on the PCB, and the electric quantity indicating circuit can measure the electric quantity of the storage battery in real time, so that a user can intuitively know the change of the electric quantity of the storage battery. When only one electric quantity indicating lamp is turned on or all the electric quantity indicating lamps are turned off, a user can be reminded to charge the storage battery, so that the situation that the electric quantity is too low when the tension measuring device is used is avoided, and all working procedures of textile production can be stable.

Description

Technical Field

[0001] The utility model relates to the field of tension measuring instruments, and particularly to a tension measuring device. Background Art

[0002] In the production of the textile industry, the tension of yarn is an important process parameter. Tension is involved in each process from weaving preparation to weaving completion, and its magnitude and stability will directly affect the appearance effect and internal quality of products. Therefore, the measurement of yarn tension is particularly important. In the prior art, a tensiometer is used to measure the yarn tension. Chinese patent document with publication number CN201207004Y discloses a handheld digital display tensiometer. A rechargeable battery is arranged inside the handle of the tensiometer. However, the tensiometer cannot visually display the battery power to the user, and the user is likely to forget to charge the battery. In case of too low battery power, the tensiometer cannot be used normally, which cannot ensure the stability of each process in textile production and will affect the quality of textiles.

[0003] It can be seen that the prior art still needs to be improved. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a tension measuring device, aiming to solve the problem that the existing yarn tensiometer cannot visually display the battery power to the user and the user is likely to forget to charge the battery.

[0005] To achieve the above purpose, the solution provided by the utility model is:

[0006] A tension measuring device includes a housing, a tension induction wheel arranged at the front end of the housing, wire guiding wheels located on both sides of the tension induction wheel and movable, a tension sensor arranged inside the housing and connected to the tension induction wheel, a PCB board arranged inside the housing, a controller arranged on the PCB board and electrically connected to the tension sensor, and a storage battery arranged inside the housing and electrically connected to the PCB board; a power indication circuit is arranged on the PCB board; the power indication circuit includes a plurality of power indicator lights arranged side by side; the power output end of the storage battery is connected to the power indication circuit; through holes for exposing the power indicator lights are formed on the housing.

[0007] Preferably, a charge and discharge control circuit is arranged on the PCB board. A DC charging input port is externally connected to the charge and discharge control circuit. The DC charging input port is arranged on the housing. The storage battery is electrically connected to the charge and discharge control circuit.

[0008] Preferably, both the through holes and the DC charging input port are arranged at the rear end of the housing.

[0009] Preferably, the housing includes a front shell and a rear shell detachably connected to the front shell; the PCB board is detachably disposed inside the front shell; a display screen is provided on the front of the front shell, and the display screen is electrically connected to the controller.

[0010] Preferably, a backlight board is provided on the back of the display screen, and the backlight board is detachably connected to the display screen; keys and a sound generating component are provided on the PCB board, the keys are electrically connected to the controller, and the controller is electrically connected to the sound generating component; an assembly hole matching the keys is formed in the front shell.

[0011] Preferably, the tension measuring device further includes:

[0012] A trigger rod, the upper end of the trigger rod is swingably connected to the inside of both the front shell and the rear shell at the same time,

[0013] A movable bracket, the movable bracket is movably disposed inside the housing, and the movable bracket has a wire passing wheel mounting portion at the front end of the housing,

[0014] A connecting member, the connecting member is fixedly disposed at the upper end of the trigger rod, and the connecting member is located at the back of the movable bracket;

[0015] Wherein, the connecting member swings around the upper end of the trigger rod and is used to drive the movable bracket to move back and forth.

[0016] Preferably, the tension measuring device further includes:

[0017] A return spring, the return spring is located inside the housing, one end of the return spring is fixedly connected to the movable bracket, and the other end of the return spring is fixedly connected to the inside of the rear shell.

[0018] Preferably, an upwardly opening U-shaped groove is provided at the upper end of the connecting member; a guide rod matching the U-shaped groove is provided on the back of the movable bracket.

[0019] Preferably, a limiting mechanism is provided inside the rear shell, and the limiting mechanism is used to limit the backward movement of the movable bracket.

[0020] Preferably, the tension measuring device further includes a fixed bracket and an induction wheel mounting rod; the fixed bracket is connected to the inside of the rear shell through a fastener, and a strip-shaped hole for the fastener to pass through is provided on the movable bracket; the induction wheel mounting rod is disposed on the fixed bracket and extends to the front end of the housing.

[0021] Beneficial effects:

[0022] The present utility model provides a tension measuring device. By arranging a power quantity indicating circuit including a power quantity indicator lamp on a PCB board, and utilizing the function that the power quantity indicating circuit can measure the power quantity of the storage battery in real time, the user can intuitively understand the change of the power quantity of the storage battery. When only one power quantity indicator lamp is on or all the power quantity indicator lamps are off, the user can be reminded to charge the storage battery, thereby ensuring that the tension measuring device will not have a situation of too low power during use, and each process of textile production can be stable. Brief Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 is the structural schematic diagram of the tension measuring device provided by the present utility model Figure I .

[0025] Figure 2 is the structural schematic diagram of the tension measuring device provided by the present utility model Figure II .

[0026] Figure 3 is the split diagram of the structural schematic of the tension measuring device provided by the present utility model.

[0027] Figure 4 is Figure 3 the enlarged view of part A in

[0028] Figure 5 the schematic diagram of the power quantity indicating circuit.

[0029] Figure 6 is the structural schematic diagram inside the rear shell.

[0030] Figure 7 is the connection schematic diagram of the movable component and the fixed component Figure I .

[0031] Figure 8 is the connection schematic diagram of the movable component and the fixed component Figure II .

[0032] Explanation of the Reference Numerals in the Drawings:

[0033] 1 - housing; 101 - front shell; 1001 - through hole; 102 - rear shell;

[0034] 2 - Tension induction wheel; 3 - Thread - passing wheel; 4 - PCB board; 5 - Battery; 6 - Battery level indicator; 7 - DC charging input port; 8 - Display screen; 9 - Power - on key; 10 - Trigger lever;

[0035] 11 - Movable bracket; 111 - U - shaped groove; 112 - Strip - shaped hole;

[0036] 12 - Connecting piece; 13 - Return spring; 14 - Guide rod; 15 - Limiting mechanism; 16 - Fixed bracket; 17 - Induction wheel mounting rod; 18 - Button. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0038] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, the directional indications will also change accordingly.

[0039] It should also be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time.

[0040] In addition, the descriptions involving "first", "second", etc. in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0041] Please refer to Figures 1 to 5 , the present utility model provides a tension measuring device, including a housing 1, a tension induction wheel 2, a thread - passing wheel 3, a tension sensor, a PCB board 4, a controller, and a battery 5.

[0042] Among them, the tension induction wheel 2 is arranged at the front end of the housing 1; the tension sensor is arranged inside the housing 1 and is connected to the tension induction wheel 2; the wire passing wheels 3 are located on both sides of the tension induction wheel 2 and can move relative to the front end of the housing 1, thereby ensuring that the yarn is wound around the wire passing wheels 3 and the tension induction wheel 2, so as to obtain the tension value of the yarn; the PCB board 4 is arranged inside the housing 1; the controller is arranged on the PCB board 4 and is electrically connected to the tension sensor, so as to obtain the tension value obtained by the tension sensor; the storage battery 5 is electrically connected to the PCB board 4 to ensure the normal operation of the functional modules including the controller on the PCB board 4.

[0043] Further, a power quantity indicating circuit is arranged on the PCB board 4; the power quantity indicating circuit includes a plurality of power quantity indicating lamps 6 arranged side by side, and the power output end of the storage battery 5 is connected to the power quantity indicating circuit. The power quantity indicating circuit can measure the power quantity of the storage battery 5 in real time and visually display it to the user through the power quantity indicating lamps 6. When only one power quantity indicating lamp 6 is lit or all the power quantity indicating lamps 6 are extinguished, the user can be reminded to charge the storage battery 5, thereby ensuring that the tension measuring device will not have a situation of too low power during use, and each process of textile production can be stable.

[0044] A plurality of through holes 1001 for the power quantity indicating lamps 6 to expose are formed in the housing 1 to ensure that the user can intuitively understand the change of the power quantity of the storage battery 5 inside the housing 1 during the use of the tension measuring device.

[0045] Specifically, the power quantity indicating lamp 6 is a light emitting diode. In the present utility model, the power quantity indicating circuit may include a voltage stabilizing diode D, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first comparator U1, a second comparator U2, a third comparator U3, a fourth comparator U4, a first light emitting diode D1, a second light emitting diode D2, a third light emitting diode D3, and a fourth light emitting diode D4.

[0046] Among them, the input end of the voltage stabilizing diode D is electrically connected to the power output end of the storage battery 5, and the output end of the voltage stabilizing diode is respectively connected to one end of the first resistor R1, the positive electrodes of the first light-emitting diode D1, the second light-emitting diode D2, the third light-emitting diode D3, and the fourth light-emitting diode D4; the other end of the first resistor R1 is respectively connected to the second resistor R2 and the non-inverting input end of the first comparator U1; the output end of the first comparator U1 is connected to the negative electrode of the first light-emitting diode D1; the other end of the second resistor R2 is respectively connected to the third resistor R3 and the non-inverting input end of the second comparator U2; the output end of the second comparator U2 is connected to the negative electrode of the second light-emitting diode D2; the other end of the third resistor R3 is respectively connected to one end of the fourth resistor R4 and the non-inverting input end of the third comparator U3; the output end of the third comparator U3 is connected to the negative electrode of the third light-emitting diode D3; the other end of the fourth resistor R4 is connected to the non-inverting input end of the fourth comparator U4; the output end of the fourth comparator U4 is connected to the negative electrode of the fourth light-emitting diode D4. One end of the fifth resistor R5 is connected to the power output end of the storage battery 5, and the other end is respectively connected to the inverting input ends of the first comparator U1, the second comparator U2, the third comparator U3, and the fourth comparator U4.

[0047] The zener diode D is used to make the battery 5 output a constant voltage. The output constant voltage is stepped down by the first resistor R1, the second resistor R2, the third resistor R3, and the fourth resistor R4. Specifically, after being stepped down by the first resistor R1, it is input to the non-inverting input terminal of the first comparator U1. After being stepped down by the second resistor R2, it is input to the non-inverting input terminal of the second comparator U2. After being stepped down by the third resistor R3, it is input to the non-inverting input terminal of the third comparator U3. After being stepped down by the fourth resistor R4, it is input to the non-inverting input terminal of the fourth comparator U4, so that the voltages at the non-inverting input terminals of the first comparator U1, the second comparator U2, the third comparator U3, and the fourth comparator U4 decrease in sequence. When the battery 5 is fully charged, the voltages input to the inverting input terminals of the first comparator U1, the second comparator U2, the third comparator U3, and the fourth comparator U4 are all greater than the voltages at the corresponding non-inverting input terminals. The output terminals of the first comparator U1, the second comparator U2, the third comparator U3, and the fourth comparator U4 all output low levels, and the first light-emitting diode D1, the second light-emitting diode D2, the third light-emitting diode D3, and the fourth light-emitting diode D4 are all lit. During the process of the battery 5 discharging, the output voltage of the battery 5 gradually decreases. When the voltage input to the inverting input terminal of the first comparator U1 is less than the voltage at the non-inverting input terminal of the first comparator U1, the output terminal of the first comparator U1 outputs a high level, and the first light-emitting diode is turned off. As the output voltage of the battery 5 continues to decrease, the second light-emitting diode D2, the third light-emitting diode D3, and the fourth light-emitting diode D4 are turned off in sequence, thereby realizing the function of indicating the battery level.

[0048] Of course, the battery level indicating circuit is not limited to the above form.

[0049] As Figure 1 and Figure 3 shown, in a preferred embodiment of the present invention, a charge and discharge control circuit is provided on the PCB board 4. The charge and discharge control circuit is externally connected to a DC charging input port 7. The DC charging input port 7 is provided on the housing 1, and the battery 5 is electrically connected to the charge and discharge control circuit. The DC charging input port 7 can be a USB charging port, a Type-C charging port, etc. The battery 5 can be charged through the DC charging input port 7.

[0050] As Figure 2 shown, in a preferred embodiment of the present invention, the through hole 1001 is provided at the rear end of the housing 1, and the through hole 1001 can be distributed from top to bottom.

[0051] Since the rear end of the housing 1 is usually facing the user when the tension measuring device is in use, when the through hole 1001 cooperating with the power indicator light 6 is provided at the rear end of the housing 1, the user can easily see the power indicator light 6.

[0052] As Figure 1 shown, in a preferred embodiment of the present invention, the housing 1 is in an inverted L shape, so the housing 1 has a handle portion that is convenient to hold, and the DC charging input port 7 is provided at the rear end of the housing 1 and is located at the handle portion. When the battery 5 needs to be charged, the tension measuring device can be placed flat, thus facilitating charging.

[0053] As Figure 1 and Figure 3 shown, in a preferred embodiment of the present invention, the housing 1 includes a front shell 101 and a rear shell 102 detachably connected to the front shell 101; the PCB board 4 is detachably disposed inside the front shell 101; a display screen 8 is provided on the front surface of the front shell 101, and the display screen 8 is electrically connected to the controller so that the display screen 8 can intuitively display the tension data of the yarn. A function button is also provided on the front surface of the front shell 101, and with the help of the display screen 8, it is convenient for the user to perform function settings on the tension measuring device.

[0054] In a preferred embodiment of the present invention, a backlight board is provided on the back of the display screen 8, and the backlight board can be detachably connected to the mounting frame of the display screen 8. The backlight board can provide uniform illumination for the display screen 8, so that the display content can be clearly visible. Therefore, in some workshop environments with weak light, it can ensure that the user obtains the measurement data.

[0055] As Figure 1 and Figure 2 shown, further, a button 18 and a sound generating component are provided on the PCB board 4. The button 18 can be a physical button or a touch button; the sound generating component can be a buzzer. The button 18 is electrically connected to the controller, and the controller is electrically connected to the sound generating component; an assembly hole cooperating with the button is provided on the front shell 101. When the user presses the button 18, the controller will detect the state change of the button and control the sound generating component to generate sound, so that there will be a button prompt sound when the button 18 is pressed, providing timely feedback for the user.

[0056] As Figure 1 、 Figure 3 、 Figures 6 to 8As shown, in a preferred embodiment of the present utility model, the tension measuring device further includes a trigger lever 10, a movable bracket 11, and a connecting member 12. When the housing 1 is in an inverted L shape, the trigger lever 10 is at the connection of the handle portion and the horizontal portion of the housing 1, and the upper end of the trigger lever 10 is located inside the housing 1 and is swingably connected to the inner sides of both the front shell 101 and the rear shell 102 simultaneously, so as to facilitate the user to pull the trigger lever 10. The movable bracket 11 is disposed inside the housing 1, and the front side of the movable bracket 11 extends out of the housing 1 composed of the front shell 101 and the rear shell 102. The front side of the movable bracket 11 has a wire wheel 3 mounting portion; the wire wheel 3 mounting portion is used for mounting two wire wheels 3. The connecting member 12 is fixedly provided at the upper end of the trigger lever 10, and the connecting member 12 is located at the back of the movable bracket 11. When the trigger lever 10 is pulled by the user, the connecting member 12 swings counterclockwise with the upper end of the trigger lever 10 as the center, thereby driving the movable bracket 11 to move forward, so that the wire wheel 3 can move at the front end of the housing 1.

[0057] As Figure 6 and Figure 7 shown, in a preferred embodiment provided by the present utility model, the tension measuring device further includes a return spring 13. The return spring 13 is located inside the housing 1, and one end of the return spring 13 is fixedly connected to the movable bracket 11, and the other end of the return spring 13 is fixedly connected to the inner side of the rear shell 102. When the movable bracket 11 moves forward, the return spring 13 is in a stretched state; when the user releases the fastener lever, the return spring 13 will pull the movable bracket 11 backward during reset, thereby realizing the backward movement of the movable bracket 11.

[0058] As Figure 8 shown, in a preferred embodiment of the present utility model, an upwardly open U-shaped groove 111 is provided at the upper end of the connecting member 12; a guide rod 14 cooperating with the U-shaped groove 111 is provided on the back of the movable bracket 11. The provision of the U-shaped groove 111 enables the guide rod 14 to move back and forth in a straight line direction when the connecting member 12 swings, thereby ensuring the forward and backward movement of the movable bracket 11.

[0059] As Figure 6 shown, in a preferred embodiment of the present utility model, a limiting mechanism 15 is provided on the inner side of the rear shell 102. The limiting mechanism 15 is used to limit the backward movement of the movable bracket 11, so that during the reset process of the return spring 13, the movable bracket 11 will not move backward too far, and the wire wheel 3 will not collide with the housing 1.

[0060] Specifically, the limiting mechanism 15 can be a bolt detachably provided on the inner side of the rear shell 102.

[0061] As Figure 6 and Figure 7As shown, in a preferred embodiment of the present utility model, the tension measuring device further includes a fixed bracket 16 and an induction wheel mounting rod 17; the fixed bracket 16 is connected to the inner side of the rear shell 102 through fasteners (such as screws), and a strip-shaped hole 112 for the fasteners to pass through is provided on the movable bracket 11, so that the movable bracket 11 can move, and at the same time the fixed bracket 16 can be fixed to the front of the movable bracket 11; the induction wheel mounting rod 17 is arranged on the fixed bracket 16, and the induction wheel mounting rod 17 extends to the front end of the housing 1, and the induction wheel mounting rod 17 is used for mounting the tension induction wheel 2.

[0062] The above are only the preferred embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made by using the content of the specification and drawings of the present utility model under the inventive concept of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. A tension measuring device, comprising a housing, a tension sensing wheel disposed at the front end of the housing, thread passing wheels located on both sides of the tension sensing wheel and movable, a tension sensor disposed inside the housing and connected to the tension sensing wheel, a PCB board disposed inside the housing, a controller disposed on the PCB board and electrically connected to the tension sensor, and a storage battery disposed inside the housing and electrically connected to the PCB board; characterized in that, A power indication circuit is provided on the PCB board; the power indication circuit includes a plurality of power indicator lights arranged side by side; the power output terminal of the storage battery is connected to the power indication circuit; through holes for the power indicator lights to expose are formed on the housing.

2. The tension measuring device according to claim 1, characterized in that, A charge and discharge control circuit is provided on the PCB board, a DC charging input port is externally connected to the charge and discharge control circuit, the DC charging input port is arranged on the housing, and the storage battery is electrically connected to the charge and discharge control circuit.

3. The tension measuring device according to claim 2, characterized in that, Both the through holes and the DC charging input port are arranged at the rear end of the housing.

4. The tension measuring device according to claim 1, characterized in that The housing includes a front shell and a rear shell detachably connected to the front shell; the PCB board is detachably arranged inside the front shell; a display screen is arranged on the front of the front shell, and the display screen is electrically connected to the controller.

5. The tension measuring device according to claim 4, characterized in that, A backlight board is arranged on the back of the display screen, and the backlight board is detachably connected to the display screen; A key and a sound generating component are provided on the PCB board, the key is electrically connected to the controller, and the controller is electrically connected to the sound generating component; an assembly hole matching the key is formed on the front shell.

6. The tension measuring device according to claim 4, wherein It further includes: A trigger rod, the upper end of the trigger rod is simultaneously swingably connected to the inside of the front shell and the inside of the rear shell, A movable bracket, the movable bracket is movably arranged inside the housing, and the movable bracket has a wire passing wheel mounting portion at the front end of the housing, A connecting piece, the connecting piece is fixedly arranged at the upper end of the trigger rod, and the connecting piece is located at the back of the movable bracket; Wherein, the connecting piece swings around the upper end of the trigger rod and is used to drive the movable bracket to move back and forth.

7. The tension measuring device according to claim 6, characterized in that, It further includes: A return spring, the return spring is located inside the housing, one end of the return spring is fixedly connected to the movable bracket, and the other end of the return spring is fixedly connected to the inside of the rear shell.

8. The tension measuring device according to claim 6, characterized in that, An upwardly open U-shaped groove is arranged at the upper end of the connecting piece; a guide rod matching the U-shaped groove is arranged on the back of the movable bracket.

9. The tension measuring device according to claim 6, characterized in that, A limiting mechanism is arranged on the inside of the rear shell, and the limiting mechanism is used to limit the backward movement of the movable bracket.

10. The tension measuring device according to claim 6, characterized in that, It further includes a fixed bracket and an induction wheel mounting rod; the fixed bracket is connected to the inside of the rear shell through a fastener, a strip-shaped hole for the fastener to pass through is arranged on the movable bracket; the induction wheel mounting rod is arranged on the fixed bracket and extends to the front end of the housing.

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