Patent Application
20210309400
The present invention relates to a packing tool, and more particularly to a packing tool capable of displaying tension.
In general, a packing strap is used to pack goods for transportation by means of a packing tool. A conventional packing tool comprises a body. The body is provided with a strap cutting device, a strap winding device and a strap pressing device. The strap winding device is provided with a handle. One end of the packing strap is inserted into the strap pressing device, and the other end of the packing strap is inserted through the strap cutting device and wound around the strap winding device and gradually tightened by the handle. Finally, the unnecessary packing strap is cut by the strap cutting device to complete the packing operation.
However, during the process of tightening the packing strap by the handle, if the tension applied to the packing strap is too large, the packing strap will exert a reaction force to the strap winding device, making the handle stuck and unable to rotate. As a result, the packing tool suffers a lot of wear and tear and even malfunctions. Conversely, if the tension applied to the packing strap is insufficient, the strap winding device is unable to tighten the goods. At this time, it is required to cut the packing strap by using the strap cutting device, and then perform the packing operation again. Therefore, the packing tool cannot achieve the effect of fast packing. Accordingly, the inventor of the present invention has devoted himself based on his many years of practical experiences to solve these problems.
The primary object of the present invention is to provide a packing tool capable of displaying tension, which allows the user to pay attention to the tension value applied to a packing strap by the packing tool at any time, so as to achieve the purpose of fast packing.
In order to achieve the above object, a packing tool capable of displaying tension is provided. The packing tool comprises a body, a detection unit, and a display unit. The body includes a strap winding device. The detection unit is connected to the strap winding unit. The detection unit is configured to detect a tension value of the strap winding device. The display unit is electrically connected to the detection unit for displaying the tension value.
In the packing tool provided by the present invention, the detection unit is used to detect the applied force value of the strap winding device and then calculate and output a tension value to the display unit, so that the user can pay attention to the tension value applied to the packing strap by the packing tool at any time through the display unit, so as to achieve the purpose of fast packing.
Embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings.
The detection unit 20 is connected to the strap winding unit 11. The detection unit 20 is configured to detect an applied force value of the strap winding device 11. Further, the detection unit 20 may be a load cell. The detection unit 20 may be attached to, in contact with, or fixedly connected to the strap winding device 11, such as the handle 14 or the first abutting member 16. In this embodiment of the present invention, the detection unit 20 is a strain gauge. The detection unit 20 is attached to the first abutting member 16. The detection unit 20 can measure the amount of deformation according to the applied force. Thereby, during the packing process, when the first abutting member 16 is compressed and deformed, the detection unit 20 will detect the amount of deformation of the first abutting member 16 and obtain the applied force value after correction.
The display unit 50 is electrically connected to the processing unit 40 and is configured to receive a signal output from the processing unit 40, including a tension value, a warning value, a unit, and so on. The display unit 50 has a panel 51 that is disposed on the outer side of the outer casing 31 and located between the body 10 and the handle 14 at a relative position to an underside 141 of the handle 14. The panel 51 is an LCD panel. The panel 51 has a backlight display function to provide lighting in dark areas, so as to increase the convenience of use.
The input unit 60 is electrically connected to the processing unit 40. The input unit 60 includes a first button 61, a second button 62, and a third button 63. In this embodiment of the present invention, the first button 61 serves as a return-to-zero button and an on/off button. The second button 62 serves as a switching button for the following module 42 and the peak module 44. Pressing the third button 63 for a short time serves as a unit switching button. Pressing the third button 63 for a long time serves as a warning value setting member of the warning module 45. Then, using the second button 62 and the third button 63 selects the first warning value or the second warning value, and the first button 61 is pressed to enter the setting. The second button 62 and the third button 63 are used for adjustment, and then the first button 61 is pressed to complete the setting.
The warning unit 70 is electrically connected to the warning module 45. The warning unit 70 has a first light-emitting member 71 and a second light-emitting member 72. The first light-emitting member 71 and the second light-emitting member 72 are disposed on the outer side of the outer casing 31 and electrically connected to the circuit board 33, respectively. In this embodiment of the present invention, the first light-emitting member 71 is a green LED, and the second light-emitting member 72 is a red LED. When the tension value reaches the first warning value, the first light-emitting member 71 will light up; when the tension value reaches the second warning value, the second light-emitting member 72 will light up.
The wireless communication unit 80 is electrically connected to the processing unit 40. The wireless communication unit 80 is Bluetooth. The value detected by the detection unit 20 or the tension value corrected by the processing unit 40 are transmitted to a mobile device, such as a mobile phone, in real time, which allows the user to pay attention to the tension value applied to the packing strap by the packing tool 10 at any time. The wireless communication unit 80 is electrically connected to a third light-emitting member 81. The third light-emitting member 81 is an LED, and is disposed on the outer casing 31 and electrically connected to the circuit board 33. Thereby, it can be known whether the wireless communication unit 80 has been successfully communicated with the mobile device through the lighting of the third light-emitting member 81.
The power supply unit 90 is electrically connected to the processing unit 40. The power supply unit 90 includes a power storage member 91, a charging member 92, and a fourth light-emitting member 93. In this embodiment of the present invention, the power storage member 91 is a battery. The charging member 92 is a charging stand. The charging member 92 can be connected to a power source for the power storage member 91 to be charged. The fourth light-emitting member 93 is a red LED. The fourth light-emitting member 93 is disposed on the outer casing 31 and is electrically connected to the circuit board 33. When the power supply unit 90 is in a charging mode, the fourth light-emitting member 93 will light up.
When the packing strap is tightened to a certain degree, the tension of the packing strap will generate a reaction force on the strap winding device 11 to deform the first abutting member 16. At this time, the detection unit 20 will detect the amount of deformation of the first abutting member 16, and the processing unit 40 receives the signal from the detection unit 20 and then calculates and outputs the tension value to the display unit 50. The panel 51 is located at a relative position to the underside 141 of the handle 14, so a tension value will be displayed when the handle 14 is operated. The user can pay attention to the tension value applied to the packing strap by the packing tool 10 at any time through the panel 51 to cooperate with the following module 42. Alternatively, the peak of the tension value can be displayed through the peak module 44, and the unit of force can be changed by using the conversion module 43.
It is worth mentioning that the user can set the first warning value and the second warning value at any time through the input unit 60 and the warning module 45. The first warning value and the second warning value are the target values of tension. When the tension value reaches the first warning value, the first light-emitting member 71 will light up, that is, the set target value has been reached, and the strap cutting device 12 can be used to complete the packing operation. When the tension value reaches the second warning value, the second light-emitting member 72 will light up, that is, the set target value has been reached, and the strap winding device 11 should be stopped to avoid excessive tension. In this way, the user can learn whether the tension value applied to the packing strap by the packing tool 10 has reached or exceeded the target value, thereby judging the tension value of the packing strap quickly.
Although particular embodiments of the present invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the present invention. Accordingly, the present invention is not to be limited except as by the appended claims.
