Locking tool for elastic clamp

Abstract

The utility model relates to a locking tool for an elastic hoop, which comprises a handle and a sheet-shaped working end far away from the handle, at least one acting part is arranged on the sheet-shaped working end in the circumferential direction, and the acting part can be embedded into a lug of the elastic hoop. The locking tool comprises a handle and a lug arranged on the handle so that the elastic clamp can be switched from an open state to a locked state by exerting action on the lug, the locking tool further comprises a force sensor arranged on the handle, and the force sensor is used for measuring force exerted on the handle; the signal processing device is in signal connection with the force sensor and comprises a comparator, and the comparator is designed to output a corresponding control signal under the condition that the force applied to the handle is greater than or equal to a predetermined threshold value; the signal device is connected with the signal processing device, and the signal device is used for responding to a control signal from the signal processing device and outputting output information indicating that the force applied to the handle is qualified.

Description

Technical Field

[0001] The utility model relates to a locking tool for an elastic clamp. Background Art

[0002] A clamp is a fastener used to connect a soft pipe to a hard pipe. It is widely used in the fields of vehicles, ships, mining, petroleum, chemicals, pharmaceuticals, agriculture, etc. to achieve a tight connection between a hose and a hard pipe, such as a metal pipe or a plastic pipe. The radial size of the clamp is generally adjustable, so that the clamp can be installed on the hose and the hard pipe and can be adapted to hoses and hard pipes of different sizes to a certain extent.

[0003] Among the various types of clamps commonly used in industrial technology, an elastic clamp is a clamp that applies a radially inward locking force to the corresponding pipeline by its own elastic force in the locked state, thereby realizing a reliable and fastened connection of the pipeline. In the open state of the elastic clamp, the elastic clamp can be mechanically opened relative to the locked state (for example, by the mutual abutment between its lug and the stopper) and prevented from rebounding by its own elastic force. As a result, the elastic clamp can have a relatively large radial dimension in the open state to facilitate the installation operation. During installation, in order to make the elastic clamp change from the open state to the locked state, the lug of the elastic clamp can be pried with the help of a tool, for example, so that the lug and the stopper are separated from the mutual abutment, so that the elastic clamp can rebound freely and achieve locking.

[0004] A problem that often occurs during this process is that it is difficult for the operator to intuitively determine whether the elastic clamp has successfully changed from the open state to the locked state. This may especially occur when the operating space is small or the operator cannot directly observe the installation position of the elastic clamp.

[0005] Therefore, there is an urgent need for a solution that can reliably determine and intuitively indicate whether the elastic clamp is successfully locked. Utility Model Content

[0006] The task of the utility model is to provide a locking tool for an elastic clamp, which can overcome at least one defect in the prior art, and in particular can reliably judge and intuitively indicate whether the elastic clamp is successfully locked.

[0007] According to the utility model, a locking tool for an elastic clamp is proposed, wherein the locking tool comprises a handle and a sheet-shaped working end away from the handle, at least one action portion is constructed in the circumferential direction of the sheet-shaped working end, and the action portion can be embedded in the lug of the elastic clamp so that the elastic clamp can be transformed from an open state to a locked state by applying an action to the lug, and the locking tool also comprises: a force sensor arranged on the handle, the force sensor is configured to measure the force applied to the handle; a signal processing device connected to the force sensor signal, the signal processing device includes a comparator, the comparator is configured to output a corresponding control signal when the force applied to the handle is greater than or equal to a predetermined threshold value; a signal device connected to the signal processing device, the signal device is configured to, in response to the control signal from the signal processing device, output output information indicating that the force applied to the handle is qualified.

[0008] By using the locking tool according to the utility model, the force applied to the handle of the locking tool can be reliably detected by means of the force sensor, and the operator can intuitively know whether the force applied to the handle of the locking tool by the operator is qualified according to the output information of the signal device. Generally speaking, when operating the elastic clamp, especially the lug of the elastic clamp, by means of the locking tool, sufficient force needs to be applied to the lug of the elastic clamp so that the lug of the elastic clamp and the corresponding stopper are separated and abutted against each other. In this process, the force applied by the operator to the handle of the locking tool is directly related to whether the elastic clamp successfully changes from the open state to the locked state (due to the lug of the elastic clamp being separated from the corresponding stopper).

[0009] The elastic clamp involved in the utility model particularly refers to an elastic clamp with a locking structure, which enables the elastic clamp to be kept in an open state with a relatively large radial dimension in the delivery or uninstalled state. During the installation process, in order to change the elastic clamp from the open state to the locked state, a locking tool, particularly preferably a locking tool according to the utility model, is required to loosen the locking structure.

[0010] In the utility model, the cooperation of the force sensor, the signal processing device and the signal device is used to provide a prompt for whether the elastic clamp is successfully locked. Specifically, the force applied to the handle of the locking tool by the operator's hand can be detected by the force sensor arranged on the handle, and a comparator can be used to determine whether the force detected by the force sensor is greater than or equal to a predetermined threshold. The signal device can output output information indicating that the force applied to the handle is qualified when the force applied to the handle is greater than or equal to a predetermined threshold based on the judgment result of the comparator. Thus, the operator can intuitively know from the output information that the operator's operation on the elastic clamp with the help of the locking tool is successful. By using the locking tool according to the utility model, the reliability and process stability when the locking tool is used to lock the elastic clamp can be improved.

[0011] According to an embodiment of the utility model, the force sensor is configured as a resistive pressure sensor. The resistance value of the resistive pressure sensor can change with the pressure applied to the sensing area, and the change of the pressure applied to the sensing area can be known by measuring the resistance value of the resistive pressure sensor (directly or indirectly). Generally speaking, the greater the applied pressure, the smaller the resistance value of the resistive pressure sensor can be.

[0012] According to an embodiment of the utility model, the signal processing device includes a voltage-dividing resistor, the resistive pressure sensor and the voltage-dividing resistor are arranged in series between the positive electrode of the power supply and the negative electrode of the power supply, the first input end of the comparator is connected between the resistive pressure sensor and the voltage-dividing resistor, and the second input end of the comparator is connected to a reference voltage. By setting a voltage-dividing resistor in series with the resistive pressure sensor, the change in the resistance value of the resistive pressure sensor can be converted into a voltage change on the resistive pressure sensor and / or the voltage-dividing resistor, so as to compare with the reference voltage through the comparator. The reference voltage can be determined, for example, by looking up a table or testing.

[0013] According to an embodiment of the utility model, the reference voltage is adjustable. By adjusting the reference voltage, the threshold for judging whether the force applied to the handle is qualified can be adjusted accordingly. Thus, the reference voltage can be adaptively adjusted according to the different mechanical characteristics of the elastic clamp to be operated or according to the operator's usage habits, so as to ensure that the locking tool can still reliably indicate whether the force applied to the handle is qualified when the usage scenario changes.

[0014] According to an embodiment of the utility model, the signal processing device includes a variable resistor, the first end of the variable resistor is connected to the positive electrode of the power supply, the second end of the variable resistor is connected to the negative electrode of the power supply, and the reference voltage is generated between the second end of the variable resistor and the variable end. Therefore, the reference voltage can be adjusted by adjusting the variable end of the variable resistor.

[0015] According to an embodiment of the present invention, the locking tool comprises a battery, the battery is detachable from the locking tool and / or the battery is configured as a rechargeable battery.

[0016] According to one embodiment of the utility model, the battery has a supply voltage of 1.5V, and the locking tool includes a voltage stabilizing and boosting module arranged between the battery and the signal processing device, and the voltage stabilizing and boosting module is constructed to convert the supply voltage of the battery into an operating voltage for the signal processing device, and the operating voltage is 5V.

[0017] According to an embodiment of the present utility model, the handle includes a receiving groove for the force sensor; and / or the handle includes a receiving groove for the signal processing device.

[0018] According to an embodiment of the present invention, the locking tool may include a battery box for batteries. The battery box may be arranged in a rear region of the locking tool away from the active portion to facilitate the disassembly and recharging of the batteries.

[0019] According to an embodiment of the present invention, the signaling device includes a speaker and / or a signal light; and / or the signaling device includes a display device, and the display device is further configured to output the force detected by the force sensor.

[0020] According to an embodiment of the utility model, the length of the sensing area of ​​the force sensor is at least half, in particular at least 3 / 4, of the length of the handle. In some embodiments, the sensing area of ​​the force sensor can extend substantially over the entire length of the handle. Thus, the force applied by the operator's hand, in particular the fingers, to the handle can be reliably detected.

[0021] Other features of the utility model are derived from the drawings and the specific embodiments. All the features and feature combinations mentioned above in the specification and the features and feature combinations mentioned below in the specific embodiments and / or shown separately in the drawings can be used not only in the corresponding given combination, but also in other combinations, or can be used alone. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram showing an exemplary elastic clamp known from the prior art;

[0023] Figure 2 Show Figure 1 Schematic diagram of an elastic clamp;

[0024] Figure 3 A schematic diagram showing an embodiment of a locking tool for an elastic clamp according to the utility model;

[0025] Figure 4 A schematic block diagram showing an embodiment of a locking tool for an elastic clamp according to the utility model;

[0026] Figure 5 A schematic circuit diagram of an embodiment of a locking tool for a spring clamp according to the present invention is shown. DETAILED DESCRIPTION

[0027] The present invention will be described below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, it should be understood that the present invention can be presented in a variety of different ways and is not limited to the embodiments described below; in fact, the embodiments described below are intended to make the present invention more complete and fully illustrate the scope of protection of the present invention to those skilled in the art. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide more additional embodiments.

[0028] It should be understood that the terms used herein are only used to describe specific embodiments and are not intended to limit the present invention. All terms (including technical terms and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. For the sake of simplicity and / or clarity, well-known functions or structures may not be described in detail.

[0029] Herein, the term "A or B" includes "A and B" and "A or B" rather than exclusively including only "A" or only "B", unless specifically stated otherwise.

[0030] In this document, the term "exemplary" means "used as an example, instance or illustration". Any implementation described as an example here is not necessarily to be interpreted as being preferred or advantageous over other implementations. Moreover, the present invention is not limited by any stated or implied theory given in the above technical field, background technology, content of the utility model or specific implementation.

[0031] It should also be understood that when the term “include / comprises” is used in this document, it indicates the presence of the specified features, integers, steps, operations, units and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, units and / or components and / or their combinations.

[0032] Figure 1 and Figure 2 A schematic diagram of an exemplary elastic clamp 100 known from the prior art is shown. Such an elastic clamp 100 can be used to connect a hose to a hard pipe. After the end of the hose is put on the hard pipe, the hose can be clamped on the hard pipe by means of the elastic clamp 100. In the field of automobile manufacturing, such a soft-hard pipe connection can be found, for example, in air conditioning pipes, oil pipes, coolant pipes, cleaning fluid pipes, etc. of a vehicle.

[0033] exist Figure 1 The elastic clamp 100 with a locking structure is shown as an example, and the locking structure enables the elastic clamp 100 to be kept in an open state with a relatively large radial dimension (such as Figure 1 During the installation process, in order to make the elastic clamp change from the open state to the locked state (as shown in Figure 2 The locking tool 1 according to the present invention (see Figure 3 ) to release the locking mechanism.

[0034] For example, the elastic clamp 100 can be formed by winding a strip made of spring wire or spring steel, and the two free ends of the strip overlap each other and extend radially outward. Figure 1 Here, the locking structure of the elastic clamp 100 may include a lug 102 located in one free end region of the elastic clamp 100 and a corresponding lug 103 located in another free end region of the elastic clamp 100. A stopper 104 is configured at the root of the corresponding lug 103, and the root 101 of the lug 102 can abut against the stopper 104 in the open state, so that the elastic clamp 100 is kept in the open state. Figure 1 In the open state shown and relative to Figure 2 The locked state shown has an increased radial dimension 105. Thus, the elastic clamp 100 can be conveniently mounted on the hard pipe or hose 200 that needs to be connected to each other.

[0035] In order to change the elastic clamp 100 from the open state to the locked state, a through hole 106 is constructed on the lug 102 of the elastic clamp 100, so that a tool can be inserted therein and a radial outward force can be applied to the lug 102, so that the lug 102 is lifted as a whole relative to the corresponding lug 103, so that the root 101 of the lug 102 passes over the stopper 104 on the root of the corresponding lug 103, thereby disengaging the locking structure of the elastic clamp 100 and changing the elastic clamp 100 from the open state to the locked state. At this time, the elastic clamp 100 can be opened and closed due to its own elasticity. Figure 1 The open state shown is transformed into Figure 2 Locked state shown.

[0036] Figure 3 A schematic diagram of an embodiment of a locking tool 1 for an elastic clamp according to the utility model is shown. The locking tool 1 includes a handle 2 and a sheet-shaped working end 31 away from the handle 2, and at least one action portion 3 is configured on the circumference of the sheet-shaped working end 31. When the locking tool 1 is used to operate the elastic clamp 100, the action portion 3 can be embedded in the lug 102 of the elastic clamp 100 (for example, the through hole 106 of the lug 102), so that the locking tool 1 applies an action force to the elastic clamp 100, so that the elastic clamp is changed from an open state (for example, Figure 1 as shown) to a locked state (e.g. Figure 2 as shown).

[0037] In such Figure 3 In the illustrated embodiment, the locking tool 1 may include three active parts 3, which are respectively configured to be rotated 90° relative to each other on the sheet-shaped working end 31. Here, each active part 3 may protrude from the side of the sheet-shaped working end 31 in a stepped manner and be adapted to the inner dimensions of the lug 102 of the elastic clamp 100 or its through hole 106.

[0038] In order to change the elastic clamp 100 from the open state to the locked state, one of the action parts 3 of the locking tool 1 can be embedded in the lug 102 of the elastic clamp 100 or its through hole 106, and the sheet-shaped working end 31 can be pressed against the corresponding lug 103 of the elastic clamp 100, so that the locking tool 1 can apply a radially outward force or action moment to the lug 102 or its through hole 106 with the top of the corresponding lug 103 as a fulcrum. When the action force or action moment is large enough, the root 101 of the lug 102 can pass over the stopper 104 on the root of the corresponding lug 103, and thus the elastic clamp 100 is changed to the locked state. In particular, the operator can select a more convenient action part 3 to operate the elastic clamp 100 according to the specific installation environment. For example, in a relatively narrow installation environment, there may not be enough room for movement to embed the topmost action part 3 into the lug 102 of the elastic clamp. In this case, the operator can select the action part 3 located on both sides. No matter whether the action part 3 at the top or the action part 3 at both sides is selected, the operator needs to apply force to the handle 2 of the locking tool 1. In this process, the operator needs to apply force on at least one side of the handle extending parallel to the sheet-shaped working end 31, so that the selected action part 3 can generate a radially outward action force around the top of the corresponding lug 103. Here, the force applied to the handle and the radially outward action force are proportional to each other.

[0039] Combination Figure 4In order to judge and indicate whether the force applied to the handle is qualified, the locking tool 1 also includes: a force sensor 4 arranged on the handle 2, and the force sensor 4 is configured to measure the force applied to the handle 2; a signal processing device 5 connected to the signal of the force sensor 4, and the signal processing device 5 includes a comparator 51, and the comparator 51 is configured to output a corresponding control signal when the force applied to the handle 2 is greater than or equal to a predetermined threshold value; and a signal device 6 connected to the signal processing device 5, and the signal device 6 is configured to output output information indicating that the force applied to the handle 2 is qualified in response to the control signal from the signal processing device 5.

[0040] In the present invention, the force sensor 4, the signal processing device 5 and the signal device 6 can cooperate to provide a prompt of whether the force applied to the handle 2 of the locking tool 1 is qualified. Here, "the force applied to the handle 2 is qualified" means that the force applied to the handle 2 (by the operator) measured by the force sensor 4 in combination with the signal processing device 5 is greater than or equal to a predetermined threshold. This can indicate that the elastic clamp 100 is successfully locked by means of the locking tool 1, that is, the elastic clamp 100 is successfully transformed from the open state to the locked state. This is because when the elastic clamp 100, especially the lug 102 of the elastic clamp 100, is operated by means of the locking tool 1, sufficient force needs to be applied to the lug 102 of the elastic clamp 100 so that the lug 102 of the elastic clamp 100 can be disengaged from the corresponding stopper 104.

[0041] The force sensor 4 can be constructed as a flexible film sensor, in particular a resistive flexible film sensor. Figure 3 As shown, the handle 2 may include a first receiving groove 21 for the force sensor 4, and the force sensor 4 may be embedded in the first receiving groove 21 of the handle 2. If necessary, a covering layer may be provided on the surface of the force sensor 4 exposed to the first receiving groove 21, so as to protect the force sensor 4 from scratches and prevent dirt from entering. The covering layer may be made of a material capable of conducting force, such as an elastomeric material.

[0042] The handle 2 may be configured as a long rod having a rectangular cross section and having a flat and elongated shape. The force sensor 4 may be disposed on two sides of the handle 2 parallel to the sheet-shaped working end 31 (i.e. Figure 3 In one of the two sides facing upward and downward. Figure 3 In the embodiment shown, the force sensor 4 is arranged on the handle 2. Figure 3 These two sides can be particularly in the direction of the surface extension of the sheet-shaped working end 31 of the locking tool 1 (that is, Figure 3The force sensor 4 is substantially parallel to the upper or lower side of the handle 2 of the locking tool 1. When using the locking tool 1, the operator's hand can grasp the handle 2 of the locking tool 1 and thus exert force on the force sensor 4. Generally speaking, when using the locking tool 1, the operator's thumb can rest on one of the side surfaces of the handle 2, and the operator's other four fingers can surround the handle 2 from the side opposite to the thumb. Preferably, the force sensor 4 can be arranged on the side of the handle 2 that the user's thumb rests on when the locking tool 1 is generally used (for example, the side of the handle 2 on the left). Figure 3 In order to reliably detect the force applied by the operator to the handle 2, the force sensor 4 can be configured as a long flexible film sensor. The length of the sensing area of ​​the force sensor 4 can be at least half of the length of the handle 2, preferably at least 3 / 4. In other embodiments, the sensing area of ​​the force sensor 4 can extend substantially over the entire length of the handle 2.

[0043] Without being limited to the illustrated embodiment, it is also conceivable that the two sides (i.e. Figure 3 Force sensors 4 are arranged on both sides (upward and downward) of the handle 2. Thus, the force applied by the operator on the handle 2 can be detected more reliably.

[0044] like Figure 3 As shown, the handle 2 may include a second accommodating groove 22 for the signal processing device 5. The signal processor 5 and, if necessary, the signal device 6 may be arranged in the second accommodating groove 22 of the handle 2. The signal device 6 may be configured as a speaker and / or a signal light so as to output the output information indicating that the force applied to the handle is qualified in an acoustic and / or visual manner. Exemplarily, when the force applied to the handle 2 is greater than or equal to a predetermined threshold, a corresponding "beep" sound may be output through a speaker and / or the signal light may be turned on to indicate that the force applied to the handle is qualified. The signal light may, for example, be arranged on any one side or multiple sides of the handle 2. Exemplarily, the signal light may be an LED. Alternatively or additionally, the signal light may also be arranged in the tail region of the handle 2 away from the action portion 3.

[0045] In addition, the signal device can also be configured as a display device, which can light up when the force applied to the handle 2 is greater than or equal to a predetermined threshold value, indicating that the force applied to the handle is qualified. In addition, the display device can also be configured to output the force detected by the force sensor 4. The display device can be configured as a liquid crystal screen with a backlight, for example. When the force applied to the handle 2 is greater than or equal to a predetermined threshold value, the backlight of the liquid crystal screen can light up to prompt the operator that the force applied to the handle is qualified. At the same time, the liquid crystal screen can display the maximum value of the measured force (for example, for 5 seconds) for the operator to confirm again.

[0046] In order to power the electronic components of the locking tool 1, the locking tool 1 may include a battery 7 (see Figure 4 ), the battery 7 can be removed from the locking tool and / or can be configured as a rechargeable battery. For the installation of the battery 7, as Figure 3 As shown, the locking tool 1 may include a battery box 23. The battery box 23 may be disposed in the tail region of the handle 2 of the locking tool 1 to facilitate the removal and installation of the battery 7 or to facilitate direct charging of the battery 7 accommodated in the battery box 23.

[0047] In some embodiments, the battery 7 may have a supply voltage of 1.5 V. In order to adapt to the operating voltage of the signal processing device (for example, 5 V), as Figure 4 As shown, the locking tool 1 may include a voltage stabilizing and boosting module 8 disposed between the battery 7 and the signal processing device 5. The voltage stabilizing and boosting module 8 may be configured to convert the supply voltage of the battery (e.g., 1.5V) into an operating voltage (e.g., 5V) for the signal processing device 5. It is also conceivable that the supply voltage of the battery 7 itself may already be matched to the operating voltage of the signal processing device 5, so that the voltage stabilizing and boosting module 8 may also be omitted.

[0048] In some embodiments, Figure 3 As shown, the locking tool 1 may include a tail attachment 24, which may be manufactured separately from the handle 2 and attached to the handle 2 in a subsequent assembly step (e.g., by bonding, threaded connection, etc.). The second receiving groove 22 for the signal processing device 5 and the battery box 23 for the battery 7 described above may be constructed in the tail attachment 24. In addition, the signal device 6 may also be arranged on the tail attachment. The body of the tail attachment may be made of POM (polyoxymethylene) material. For example, the existing locking tool 1 may be modified by installing the separately manufactured tail attachment 24 on the existing locking tool 1, especially on its handle 2, and pasting the force sensor 4, for example, on the handle 2 of the existing locking tool 1. Thus, the existing locking tool 1 can also realize the prompt of whether the force applied to the handle 2 of the locking tool 1 is qualified, and whether the elastic clamp is successfully locked by means of the solution according to the utility model.

[0049] Figure 5 A schematic circuit diagram of a signal processing device 5 of an embodiment of a tightening tool 1 is shown. This particularly relates to a force sensor 4 and a comparator 51 of the signal processing device 5. The force sensor 4 can be configured as a resistive pressure sensor, whose resistance value R4 can change with the pressure applied to the sensing area of ​​the force sensor 4. Therefore, the resistance value R4 of the force sensor 4 can reflect the force applied to the force sensor 4. Generally speaking, the greater the applied pressure, the smaller the resistance value R4 can be.

[0050] The signal processing device 5 may include a voltage-dividing resistor R1, and the force sensor 4 and the voltage-dividing resistor R1 are arranged in series between the positive electrode V+ of the power supply and the negative electrode V- of the power supply. The first input terminal (here, the non-inverting input terminal) of the comparator 51 may be connected between the force sensor 4 and the voltage-dividing resistor R1. The greater the force applied to the force sensor 4, the smaller the resistance value R4 of the force sensor 4, and thus the greater the voltage at the first input terminal of the comparator 51. In other words, the voltage at the first input terminal of the comparator 51 is positively correlated with the force applied to the force sensor 4. The second input terminal (here, the inverting input terminal) of the comparator 51 may be connected to a reference voltage. According to the comparison result of the voltage at the first input terminal of the comparator 51 and the voltage at the second input terminal of the comparator 51, the comparator 51 may output a corresponding output voltage Vout as a control signal. Exemplarily, if the voltage at the first input terminal of the comparator 51 is greater than the reference voltage, the comparator 51 may output a high level; conversely, if the voltage at the first input terminal of the comparator 51 is less than the reference voltage, the comparator 51 may output a low level.

[0051] Here, the reference voltage is adjustable, or the predetermined threshold value of the force applied to the handle is adjustable. Figure 5 As shown, the signal processing device 1 may include a variable resistor R2, the first end of which may be connected to the positive electrode V+ of the power supply, and the second end of which may be connected to the negative electrode V- of the power supply. The reference voltage may be generated between the second end and the variable end of the variable resistor R2. Therefore, the variable end of the variable resistor R2 may be connected to the second input end (here, the inverting input end) of the comparator 51. By adjusting the variable end of the variable resistor R2, the reference voltage may be adjusted accordingly. Thus, the reference voltage may be adjusted according to the different mechanical characteristics of the elastic clamp to be operated or according to the operator's usage habits, and thus the threshold value for determining whether the force applied to the handle 2 of the locking tool 1 is qualified may be adjusted. The reference voltage or the threshold value may be determined, for example, by looking up a table or testing.

[0052] The present invention is not limited to the embodiments shown, but includes or extends to all technical equivalents that fall within the effective scope of the appended claims. The position descriptions selected in the specification, such as top, bottom, left, right, etc., refer to the direct description and the drawings shown and can be transferred to the new position according to the meaning when the position changes.

[0053] Although the utility model has been disclosed as above in the form of a preferred embodiment, it is not intended to limit the utility model. Any technical personnel in this field can make possible changes and modifications to the technical solution of the utility model by using the methods and technical contents disclosed above without departing from the spirit and scope of the utility model. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the utility model without departing from the content of the technical solution of the utility model are within the protection scope of the technical solution of the utility model.

Claims

1. A locking tool for an elastic clamp, characterized in that: The locking tool (1) comprises a handle (2) and a sheet-shaped working end (31) remote from the handle (2), at least one action portion (3) being configured in the circumferential direction of the sheet-shaped working end (31), the action portion being capable of being embedded in a lug of the elastic clamp so as to cause the elastic clamp to be transformed from an open state to a locked state by exerting an action on the lug, the locking tool further comprising: A force sensor (4) disposed on the handle, the force sensor being configured to measure a force applied to the handle; A signal processing device (5) connected to the force sensor signal, the signal processing device comprising a comparator (51), the comparator being configured to output a corresponding control signal when the force applied to the handle is greater than or equal to a predetermined threshold value; A signal device (6) connected to the signal processing device is configured to output output information indicating that the force applied to the handle is qualified in response to a control signal from the signal processing device.

2. The locking tool for the elastic clamp according to claim 1, characterized in that: The force sensor is designed as a resistive pressure sensor.

3. The locking tool for the elastic clamp according to claim 2, characterized in that: The signal processing device comprises a voltage-dividing resistor (R1), the resistive pressure sensor and the voltage-dividing resistor are arranged in series between a positive electrode of a power supply and a negative electrode of a power supply, the first input end of the comparator is connected between the resistive pressure sensor and the voltage-dividing resistor, and the second input end of the comparator is connected to a reference voltage.

4. The locking tool for the elastic clamp according to claim 3, characterized in that: The reference voltage is adjustable.

5. The locking tool for the elastic clamp according to claim 4, characterized in that: The signal processing device comprises a variable resistor (R2), a first end of the variable resistor is connected to the positive electrode of a power supply, a second end of the variable resistor is connected to the negative electrode of the power supply, and the reference voltage is generated between the second end of the variable resistor and the variable end.

6. The locking tool for an elastic clamp according to any one of claims 1 to 5, characterized in that: The locking tool comprises a battery (7), which is detachable from the locking tool and / or is configured as a rechargeable battery.

7. The locking tool for the elastic clamp according to claim 6, characterized in that: The battery has a supply voltage of 1.5V, and the locking tool comprises a voltage stabilizing and boosting module (8) arranged between the battery and the signal processing device, wherein the voltage stabilizing and boosting module is configured to convert the supply voltage of the battery into an operating voltage for the signal processing device, wherein the operating voltage is 5V.

8. The locking tool for an elastic clamp according to any one of claims 1 to 5, characterized in that: The handle comprises a first accommodating groove (21) for a force sensor; and / or the handle comprises a second accommodating groove (22) for a signal processing device.

9. The locking tool for an elastic clamp according to any one of claims 1 to 5, characterized in that: The signaling device includes a loudspeaker and / or a signaling light; and / or the signaling device includes a display device, which is further configured to output the force detected by the force sensor.

10. The locking tool for an elastic clamp according to any one of claims 1 to 5, characterized in that: The length of the sensing area of ​​the force sensor is at least half of the length of the handle.

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