A luggage handle with weight display

Abstract

The utility model discloses a kind of luggage handle of weighing display, including shell assembly and weighing module, the shell assembly is by left shell, right shell is connected with cylindrical hole cooperation by cylindrical pin, shell inside two ends are equipped with stepped connecting rod, left shell and right shell inside are equipped with limit board and positioning groove;Weighing module includes handle, handle upper surface central vertical fixed top post, top post other end connects elastomer, strain gauge is symmetrically pasted on the upper and lower surface and two side faces of elastomer, the surface one side of handle is also equipped with digital weighing sensor, digital weighing sensor handles voltage signal generated by strain gauge, and signal transmission is to display screen.The utility model can measure and display the weight of luggage when pulling and lifting luggage, weight data can be delayed automatic zero after loosening luggage, compact structure has no external component.

Description

Technical Field

[0001] This utility model relates to the field of luggage technology, and in particular to a luggage handle with a weight display function. Background Technology

[0002] Major airlines have strict requirements on the weight of passengers' carry-on baggage. In the past, many passengers only discovered that their baggage was overweight and needed to be checked in before boarding, incurring unnecessary fees. Currently, some suitcases have a weighing display function. The principle is to install a weighing device inside the suitcase. When the suitcase is tilted, the total weight is placed on the weighing device to complete the weighing. However, current suitcase weighing devices are prone to damage, difficult to repair, and difficult to reset after weighing. These reasons are that the weighing device is installed inside the suitcase, making it easy to be damaged by bumps and knocks. Repairing it after damage requires disassembling the suitcase. In addition, the reset mechanism is prone to jamming when the suitcase is upright, making it quite cumbersome to use. Summary of the Invention

[0003] The purpose of this invention is to provide a luggage handle with a weighing display to solve the problems existing in the prior art. When the luggage is weighed, the weight data can be obtained quickly and the weight data can be reset with a delay.

[0004] To achieve the above objectives, this utility model provides a luggage handle with a weighing display, including a housing assembly and a weighing module; The weighing module includes a handle, with a top column vertically fixed in the center of the upper surface of the handle, and an elastic body connected to the other end of the top column. Strain gauges are symmetrically attached to the upper and lower surfaces and both sides of the elastomer to convert the mechanical deformation of the elastomer into electrical signals. A digital load cell is also provided on one side of the upper surface of the grip. The digital load cell processes the voltage signal generated by the strain gauge and transmits the signal to the display screen. The weighing module is located inside the housing assembly, and the lower part of the handle of the weighing module extends out from the reserved opening at the bottom of the housing assembly.

[0005] The aforementioned luggage handle with weight display includes a housing assembly comprising a left housing and a right housing, which are connected by corresponding cylindrical pins and cylindrical holes.

[0006] The aforementioned luggage handle with weighing display has an elastic body that is rectangular, with its length parallel to the handle's length. A through hole is provided in the width direction of the elastic body, and the through hole corresponds to the position of the top post. The through hole is located in the middle of the elastic body in the vertical direction. Both ends of the elastic body are connected to the base below by nuts, and a gap is left between the elastic body and the base to provide deformation space for the elastic body.

[0007] The aforementioned luggage handle with a weight display has a strip-shaped structure and an anti-slip groove on its lower surface.

[0008] The aforementioned weighable luggage handle has a power supply installed on the upper surface of the handle and one side of the top post. The power supply powers a digital weighing sensor and provides excitation voltage to the strain gauge.

[0009] The aforementioned weighable luggage handle has a display screen embedded on the outside of the left housing and electrically connected to a digital weighing sensor.

[0010] The aforementioned luggage handle with a weight display includes a digital weighing sensor comprising an integrated weighing signal processor and a reset control unit. The integrated weighing signal processor is used to directly convert voltage signals into weight signals, and the reset control unit resets the display screen to zero.

[0011] The aforementioned luggage handle with weighing display has mounting cavities on both sides of the left and right housings. The connecting rod includes a head and a rod that are connected together. The shape of the head matches the mounting cavity. The head of the connecting rod is installed in the mounting cavity, and the rod of the connecting rod extends downward out of the housing and connects to the luggage.

[0012] The aforementioned luggage handle with weighing display has a limiting plate and a positioning groove on the inner side of both the left and right shells. The positioning groove is located on the upper part of the inner side of the left and right shells and is used to embed into the base to fix the weighing module. The limiting plate is located in the center of the inner side of the left and right shells to limit the lateral displacement of the top column.

[0013] The beneficial effects achieved by this utility model are as follows: The luggage handle with weighing display of this utility model presses an elastic body on the top column through the handle drive column, causing the elastic body to deform. The strain gauge attached to the surface of the elastic body converts the deformation into an electrical signal, which is processed by a digital sensor and converted into weight data for real-time display. It automatically resets and enters sleep mode after no operation, which can realize rapid acquisition of weighing data and delayed reset.

[0014] By integrating the weighing module inside the luggage handle housing, damage to the weighing equipment is avoided due to deformation or collision of the luggage body during transportation. The housing is detachable, and the faulty module can be directly replaced by simply removing the handle housing during maintenance, without disassembling the luggage body lining or damaging the frame structure, thus reducing maintenance costs. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the strain gauge structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the handle structure according to an embodiment of the present utility model; Figure 4 This is a flowchart illustrating the weighing display process of an embodiment of the present invention. Figure 5 This is a schematic diagram of the left shell of an embodiment of the present invention; Figure 6 This is a schematic diagram of the right shell of an embodiment of the present invention; Figure 7 This is a schematic diagram of the installation of an embodiment of this utility model.

[0017] The meanings of the reference numerals in the figure are as follows: 1. Left shell; 2. Display screen; 3. Base; 4. Metal block; 5. Power supply; 6. Strain gauge; 7. Processing unit; 8. Handle; 9. Top column; 10. Nut; 11. Right shell; 12. Cylindrical pin; 13. Cylindrical hole; 14. Connecting rod; 15. Limiting plate; 16. Positioning groove. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0019] This utility model relates to a luggage handle with a weight display function. The following detailed description of this utility model is provided in conjunction with the accompanying drawings.

[0020] Example 1

[0021] like Figure 1-7 As shown, this embodiment provides a luggage handle with a weight display function. A luggage handle with a weight display, including a housing assembly and a weighing module; The weighing module includes a handle 8, a top post 9 is vertically fixed in the center of the upper surface of the handle 8, and the other end of the top post 9 is connected to an elastic body 4. Strain gauges 6 are symmetrically attached to the upper and lower surfaces and both sides of the elastic body 4 to convert the mechanical deformation of the elastic body 4 into electrical signals. A digital weighing sensor 7 is also provided on one side of the upper surface of the grip 8. The digital weighing sensor 7 processes the voltage signal generated by the strain gauge 6 and transmits the signal to the display screen 2. The weighing module is located inside the housing assembly, and the lower part of the handle 8 of the weighing module extends out from the reserved opening at the bottom of the housing assembly.

[0022] The housing assembly includes a left housing 1 and a right housing 11, which are connected by corresponding cylindrical pins and cylindrical holes.

[0023] The left housing 1 is a rectangular hollow shell, and its inner side includes four cylindrical pins 12 arranged in a 2x2 pattern. The right housing 11 is mirror-symmetrically arranged with the right housing 1, and its inner side includes four cylindrical holes 13 arranged in a 2x2 pattern. The cylindrical pins 12 and the cylindrical holes 13 are interference-fitted to connect the left housing 1 and the right housing 11. This structure allows the left and right housings to be tightly installed.

[0024] Mounting cavities are provided on both sides of the left housing 1 and the right housing 11. The connecting rod 14 includes a head and a rod part that are connected to each other. The shape of the head matches the mounting cavity. The head of the connecting rod 14 is installed in the mounting cavity, and the rod part of the connecting rod 14 extends downward out of the housing to achieve connection with the suitcase.

[0025] The inner surfaces of the left housing 1 and the right housing 11 are provided with limiting plates 15 and positioning grooves 16. The positioning grooves 16 are located on the upper inner side of the left housing 1 and the right housing 11. The positioning grooves 16 on both sides of the housing cooperate with each other to embed into the base 3 and fix the weighing module inside the housing. The limiting plates 15 are located in the center of the inner side of the left housing 1 and the right housing 11. The limiting plates 15 on the left housing 1 and the right housing 11 cooperate with each other to limit the lateral displacement of the top column 9 and maintain the stability of the top column 9.

[0026] The weighing module includes a display screen 2, a base 3, an elastomer 4, a power supply 5, a strain gauge 6, a digital weighing sensor 7, a handle 8, a top column 9, and a nut 10.

[0027] The power supply 5 is located on the upper surface of the handle 8 and one side of the top column 9, providing power to the entire device; a digital weighing sensor 7 is also provided on the upper surface of the handle 8 and the other side of the top column 9, which can convert the weight signal into an electrical signal; the digital weighing sensor 7 transmits the processed weight data to the display screen 2 through a ribbon cable; the display screen 2 is located on the outside of the left housing 1 for easy viewing of the data.

[0028] A rod-shaped top post 9 is vertically positioned at the center of the upper surface of the grip 8. The grip 8 is fixedly connected below the top post 9, and an elastic body 4 is connected above the top post 9. The elastic body 4 is a cuboid, with its length parallel to the length of the grip 8. A through hole is provided in the width direction of the elastic body 4, corresponding to the position of the top post 9. The through hole is located vertically at the center of the elastic body 4, and its shape is two connected circular holes, a dumbbell shape, or an I-shaped through hole. The elastic body is an elastic metal alloy block. Nuts 10 are provided at both ends of the elastic body 4, connecting the elastic body 4 and the base 3. The base 3 is flat, and a gap is left between the elastic body 4 and the base 3 to isolate the interference of the preload of the nuts 10 on the measurement signal and to provide deformation space for the elastic body 4. Multiple strain gauges 6 are symmetrically arranged on the upper and lower surfaces and both sides of the elastic body 4. In this embodiment, six strain gauges 6 are used. The four strain gauges 6 on the upper and lower surfaces are arranged in a full-bridge circuit layout to form a Wheatstone bridge. The strain gauges 6 on both sides are connected to the full-bridge circuit compensation arm to compensate for errors caused by temperature changes and lateral forces. The strain gauges 6 are connected to the digital weighing sensor 7 through shielded wires to realize the data acquisition of the weighing sensor.

[0029] The power supply 5 provides power to the digital weighing sensor 7 through the signal conditioning circuit and the communication line, and provides excitation voltage to the strain gauge 6. The strain gauge 6 inputs the voltage signal generated by the force into the digital weighing sensor 7 after signal conditioning for data conversion and processing, and finally implements weight data output and reset control to the display screen 2.

[0030] The digital weighing sensor 7 includes an integrated weighing signal processor and a reset control unit. The integrated weighing signal processor is used to directly convert the voltage signal into a weight signal. The reset control unit includes a comparator, a MOSFET switch, a timer, and an optocoupler isolator.

[0031] During weighing, the voltage signal output by strain gauge 6 enters the digital weighing sensor 7. The integrated weighing signal processor has a built-in programmable gain amplifier, analog-to-digital converter, hardware multiplier, and OTP parameter storage. The integrated weighing signal processor can be an HX711 processor. The integrated weighing signal processor can convert the voltage signal into a weight signal, and finally output the weight signal to the display screen 2 through the communication interface. The integrated weighing signal processor can use any processor currently available in the technology, which will not be described in detail here.

[0032] When a reset is performed, the comparator of the reset control unit detects that the input voltage is less than the preset value and controls the MOSFET switch to cut off the power supply to strain gauge 6. At this time, the timer starts a 2-second delay. After the delay ends, the optocoupler outputs a low-level pulse to reset display screen 2, and display screen 2 returns to zero. The reset control unit can use any processor currently available in the technology, which will not be described in detail.

[0033] When the user pulls the handle 8 of the suitcase, the handle 8 drives the top column 9 to move vertically upward and applies vertical pressure to the elastic body 4. The through hole of the elastic body 4 is subjected to pressure, resulting in elastic bending deformation proportional to the pressure. The elastic bending deformation causes the six strain gauges 6 attached to its upper and lower surfaces and both sides to deform synchronously. The strain gauges 6 convert the mechanical deformation into voltage signals. The voltage signals output by the strain gauges 6 are processed by the digital weighing sensor 7. The digital weighing sensor 7 converts the mechanical signals into weight signals and finally transmits the digital signals to the display screen 2 for real-time display through the communication interface. The system automatically resets to zero within 2 seconds after the user releases the handle 8 and enters a low-power sleep state until the next effective lifting action triggers a new measurement cycle.

[0034] Example 2

[0035] The grip 8 is strip-shaped with multiple parallel grooves below it, providing a gripping area for the user.

[0036] Other technical features are the same as in Example 1.

[0037] It should be understood that the above description is for illustrative purposes only and is not intended to limit the present invention. Those skilled in the art will understand that variations of the present invention will be included within the scope of the claims herein.

Claims

1. A suitcase handle with weight display, characterized in that: Includes housing components and weighing module; The weighing module includes a handle (8), a top column (9) is vertically fixed in the center of the upper surface of the handle (8), and the other end of the top column (9) is connected to an elastic body (4). Strain gauges (6) are symmetrically attached to the upper and lower surfaces and both sides of the elastic body (4) to convert the mechanical deformation of the elastic body (4) into electrical signals; A digital weighing sensor (7) is also provided on one side of the upper surface of the grip (8). The digital weighing sensor (7) processes the voltage signal generated by the strain gauge (6) and transmits the signal to the display screen (2). The weighing module is located inside the housing assembly, and the lower part of the handle (8) of the weighing module extends out from the reserved opening at the bottom of the housing assembly; The housing assembly includes a left housing (1) and a right housing (11), which are connected by corresponding cylindrical pins and cylindrical holes. Mounting cavities are provided on both sides of the left housing (1) and the right housing (11). The connecting rod (14) includes a head and a rod part that are connected. The shape of the head matches the mounting cavity. The head of the connecting rod (14) is installed in the mounting cavity, and the rod part of the connecting rod (14) extends downward out of the housing and connects with the suitcase. The left shell (1) and the right shell (11) are both provided with a limiting plate (15) and a positioning groove (16) on their inner sides. The positioning groove (16) is located on the upper part of the inner side of the left shell (1) and the right shell (11). The positioning groove (16) is used to embed into the base (3) to fix the weighing module. The limiting plate (15) is located in the center of the inner side of the left shell (1) and the right shell (11) to limit the lateral displacement of the top column (9). The elastic body (4) is a cuboid, and the length direction of the elastic body (4) is parallel to the length direction of the handle (8). A through hole is provided in the width direction of the elastic body (4), and the through hole corresponds to the position of the top post (9). The through hole is located in the middle of the elastic body (4) in the vertical direction. The two ends of the elastic body (4) are connected to the base (3) below by nuts (10), and there is a gap between the elastic body (4) and the base (3) to provide deformation space for the elastic body (4).

2. The luggage handle with weighing display according to claim 1, characterized in that, The grip (8) is a strip structure with anti-slip grooves on the lower surface.

3. The luggage handle with weighing display according to claim 2, characterized in that, A power supply (5) is installed on the upper surface of the handle (8) and on one side of the top post (9). The power supply (5) supplies power to the digital weighing sensor (7) and provides excitation voltage to the strain gauge (6).

4. The luggage handle with weighing display according to claim 1, characterized in that, The display screen (2) is embedded on the outside of the left housing (1) and is electrically connected to the digital weighing sensor (7).

5. The luggage handle with weighing display according to claim 1, characterized in that, The digital weighing sensor (7) includes an integrated weighing signal processor and a reset control unit. The integrated weighing signal processor is used to directly convert the voltage signal into a weight signal, and the reset control unit resets the display screen (2) to zero.

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