CN201624240U - Suitcase with weight measurement device - Google Patents

Abstract

The utility model discloses a luggage case with weight measuring module, which comprises a plurality of side walls, a top wall connected with each side wall, and a bottom wall connected with each side wall, wherein the side walls, the top wall and the bottom wall form an accommodating cavity; the handle is connected to the top wall; the weight measurement module passes the roof and connects on the handle, and the weight measurement module includes: a housing connected to the inner surface of the top wall, a power supply and a central processor fixed to the housing, a first load cell and a second load cell electrically connected to the central processor and mechanically connected to the handle and the housing by fasteners, and a display connected to the outer surfaces of the housing and the top wall; the central processor is used for processing the data from the first load cell and the second load cell and sending the data to the display to display the weight of the luggage case. The first load cell and the second load cell comprise standard scales arranged along the length direction of the shell. The utility model discloses a weight of suitcase and content can easily be measured to the suitcase.

Description

A suitcase with a weight measuring device

technical field

The utility model relates to a suitcase, in particular to a suitcase with a weight measuring device.

Background technique

Currently used suitcases can generally only be used to carry items such as luggage of a predetermined weight, and if the weight of the loaded luggage items exceeds the load limit of the suitcase, it is easy to cause damage to the suitcase. However, the general user cannot know the loading capacity of the loaded items after loading the items, and generally does not use a scale for weighing. Therefore, when the weight of the loaded luggage exceeds the load limit of the suitcase, it is very difficult It is easy to cause the suitcase to break and other situations during the journey, which will bring unnecessary troubles.

Utility model content

The technical problem to be solved by the utility model is to provide a suitcase that can conveniently measure the weight of the suitcase and its contents at any time in view of the above-mentioned defects of the prior art.

In one embodiment of the present invention, a suitcase is provided, which includes a plurality of side walls, a top wall connected to each side wall, a bottom wall connected to each side wall, and a plurality of the side walls, top The wall and the bottom wall form an accommodating cavity, and further include a handle and a weight measurement module, the handle is connected to the top wall, and the weight measurement module is connected to the handle through the top wall. The weight measurement module includes a casing connected to the inner surface of the top wall, a power supply arranged in the casing, a central processing unit arranged on the casing, electrically connected to the central processing unit and through a buckle a first load cell and a second load cell mechanically connected to the handle and the housing, and a display connected to the housing and the outer surface of the top wall, the central processing unit for processing data from the first load cell and the data received by the second pressure measuring unit, and send the data representing the weight of the suitcase to the display for display.

In another embodiment, the utility model provides a suitcase, which comprises a plurality of side walls, a top wall connected to each side wall, a bottom wall connected to each side wall, a plurality of the side walls, top The wall and the bottom wall form an accommodating cavity, a plurality of wheels are connected to the bottom wall, and a retractable handle is connected to one of the side walls, the top wall and the bottom wall; a handle is connected to the top wall, and the The handle includes a first end and a second end, and also includes a weight measuring module. The weight measurement module is connected to the inner surface of the top wall, and includes a housing with a first end and a second end, the first end of the housing is connected to the first end of the handle, and the second end of the housing is connecting the second end of the handle; also including a scale having a first end and a second end, the first end of the scale is connected to the first end of the shell and the first end of the handle, the first end of the scale is The two ends are connected to the second end of the shell and the second end of the handle; the first strain gauge is connected to the position close to the first end of the scale to form a first load cell, and the second strain gauge is connected to A second pressure measuring unit is formed on the scale close to the second end of the scale; a central processing unit is electrically connected to the first pressure measuring unit and the second pressure measuring unit, and the central processing unit can receive information from the The data of the first pressure measuring unit and the second pressure measuring unit, and according to the data, generate a digital signal representing the weight of the suitcase and the items placed in the accommodating cavity, a display is electrically connected to the central processing unit, and the The display can display a digital value according to the digital signal, and a switch is electrically connected to the central processing unit, and the switch is used to trigger the central processing unit to generate the digital signal when the suitcase leaves the ground.

In another embodiment of the present invention, a luggage case is provided, comprising a plurality of walls, the plurality of walls forming a receiving cavity, a handle having a first end and a second end connected to one of the walls, and A weight measurement module is included. The weight measurement module is disposed on the inner surface of the wall connected to the handle, and includes a housing, the housing has a first end and a second end, and the first end of the housing is connected to the second end of the handle. One end, the second end of the shell is connected to the second end of the handle; it also includes a scale, a pressure measuring unit and a central processing unit, a plurality of pressure measuring units are connected in a line and arranged adjacent to the scale, and the central processing unit is electrically Connecting the plurality of pressure measuring units for receiving data from the plurality of pressure measuring units, and generating a digital signal representing the weight of the suitcase and the items placed in the accommodating cavity according to the data; a display computer connected to the central processing unit, and used for displaying the digital signal in numerical form.

Description of drawings

The utility model will be further described below in conjunction with accompanying drawings and embodiments.

Fig. 1 is a perspective view of a suitcase comprising a weight measuring module according to an embodiment of the present invention;

Figure 2 is an exploded view of the suitcase and its weight measurement module shown in Figure 1;

Figure 3 is an exploded view of the weight measurement module shown in Figure 1;

Figure 4 is a bottom view of the weight measurement module shown in Figure 1;

Figure 5 is an exploded view of the suitcase containing the weight measurement module shown in Figure 1;

Fig. 6 is a three-dimensional schematic diagram of a weight measurement module according to an embodiment of the present invention;

Fig. 7 is the top view of the weight measurement module of the utility model embodiment;

Fig. 8 is a three-dimensional schematic diagram of a weight measurement module according to an embodiment of the present invention;

Fig. 9 is a side cross-sectional schematic view of the weight measurement module of the embodiment of the present invention;

Fig. 10 is a three-dimensional schematic diagram of a suitcase including a weight measuring module according to an embodiment of the present invention;

Fig. 11A is a bottom view of a suitcase containing a weight measuring module according to an embodiment of the present invention;

Fig. 11B is a schematic front view of a suitcase containing a weight measurement module according to an embodiment of the present invention;

Fig. 12 is a schematic diagram of a display of an embodiment of the utility model;

Fig. 13 is a three-dimensional schematic diagram of a weight measurement module according to an embodiment of the present invention;

Fig. 14 is a side cross-sectional schematic view of the weight measurement module shown in Fig. 13;

Figure 15A is an assembled view of the weight measurement module shown in Figure 13;

Figure 15B is a bottom view of the weight measurement module shown in Figure 13;

Figure 15C is a partial top view of the weight measurement module shown in Figure 13 attached to the luggage case;

15D is a partial top view of the weight measurement module shown in FIG. 13 attached to the luggage case.

Detailed ways

Before any embodiment of the utility model is described in detail, it should be understood that the utility model is not limited to the structural details of the application embodiments in the following description or the following drawings, as well as the detailed explanation of the arrangement of components, the utility model The novelty can be implemented in different ways. It should also be understood that the words and terms used therein are for description and should not be regarded as limiting the present utility model. The expressions of "comprising", "comprising" or "having", and other variations should be understood as encompassing the items listed later. The terms "installed", "connected", "supported", and "connected" are used broadly or narrowly to describe direct or indirect limit. Further, "associated" and "connected" are not limited to physical or mechanical associations or connections.

1 shows a portion of a luggage case 10 including a plurality of side walls 18 , 22 , 26 , 30 , a top wall 34 and a bottom wall 38 including a weight measurement module 14 according to an embodiment of the present invention. The top wall 34 is attached to each of the side walls 18, 22, 26, 30, and the bottom wall 38 is also attached to each of the side walls 18, 22, 26, 30 to form a container for personal belongings and other items. cavity. The side walls 18, 22, 26, 30 of the luggage case 10 shown in Fig. 1, the top wall 34 and the bottom wall 38 are generally designed as rectangles with suitable sizes, but the size of each wall can be adjusted to have other shapes. Luggage, such as square, round, trapezoidal, etc. Generally, the walls 18, 22, 26, 34, 38 can be made of materials such as ABS, PC or PP. The walls 18, 22, 26, 34, 38 should generally be flexible, but equally rigid.

The luggage case 10 also includes a plurality of wheels 42 attached to the bottom wall 38 to facilitate maneuvering of the luggage case 10 . As shown in FIG. 2 , the luggage case 10 also includes a handle 46 made of tough material. The handle 46 passes through the top wall 34 and near the first end 54 of the handle 46 through the first fastener 50, and through the top wall 34 near the second end 62 of the handle 46. A second fastener 58 is attached to the weight measurement module 14 . The handle 46 includes a plurality of end caps 70 respectively disposed on the first end 54 of the handle 46 and the second end 62 of the handle 46 for securing the corresponding first fastener 50 and second fastener 58 .

2-4 show the structure of the weight measurement module 14 in more detail. The weight measurement module 14 includes a casing 74 having a cavity 78 , and the casing 74 is fixedly connected to the inner surface 82 of the top wall 34 by a plurality of fasteners, such as screws. The housing 74 shown in FIGS. 2-3 is T-shaped, but may be of other suitable shapes. Housing 74 is composed of aluminum, but may also be composed of other suitable materials or compositions. The housing 74 includes a compartment 86 for supporting a power source 90, which may be one or more batteries (eg, lithium batteries, alkaline batteries, etc.). The compartment 86 is enclosed by a cover 94 to provide access to a power source 90 .

The weight measurement module 14 also includes a first load cell 98 and a second load cell 100 disposed on a standard scale 104 , each load cell reaches the length of the housing 74 and is disposed in a cavity of the housing 74 . The standard scale 104 includes a first hole 102 disposed at a first end 106 of the standard scale 104 , and a second hole 110 disposed at a second end 114 of the standard scale 104 . The first hole 102 and the second hole 110 are used to receive the first fastener 50 and the second fastener 58 to connect the scale 104 to the handle 46 through the top wall 34 . The scale 104 also includes a third hole 108 positioned proximate to the first end 106 thereof, and a fourth hole 112 positioned proximate to the second end 114 thereof. The third hole 108 and the fourth hole 112 are used to accommodate fasteners 116 , such as screws, to connect the scale 104 to the housing 74 .

The first pressure measuring unit 98 is generally disposed near the first end of the standard scale, and the second pressure measuring unit 100 is generally disposed near the second end 114 of the standard scale 104 . The weight measurement module 14 also includes a central processing unit 118 for receiving, processing, compensating data from the load cell, and outputting data representing weight. The weight measurement module 14 also includes a display module 122, which includes a display 126 (such as an LCD) for receiving data from the central processing unit 118 and displaying it in numerical form. The display module 122 also includes a first switch 130 (eg, an on/off button) for triggering the weight measurement unit 14 . The display module 122 also includes a second switch 134 for switching the weight unit between kilograms and pounds. The display module 122 may further include switches or buttons for other functions. The display 126 , first switch 130 and second switch 134 at least partially pass through the top wall 34 .

The weight measurement module 14 further includes a housing 138 connected to the weight measurement module 14 through the top wall 34 . The housing 138 includes a recess 142 having notches 146, 150 for receiving switches 130, 134, respectively. The recess 142 also includes a notch 154 to support a panel 158 for keeping dirt and dust out of the display module 122 . The shell 138 and panel 158 can present the clean appearance of the luggage case 10 to the user. A label 162 is provided on the concave portion 142 to remind the user how to use the first switch 130 and the second switch 134 .

The weight measurement module 14 measures and displays a value representative of the weight of the luggage case 10 and its contents. In use, the user presses the first switch 130 to trigger the central processing unit 118, and then grasps the handle 46 of the suitcase 10 to lift the suitcase 10 off the ground. The total weight of the luggage case 10 and its contents is measured by the weight measurement module 14 . More specifically, when the luggage case 10 exerts a force on the handle 46, the gauge scale 104 becomes taut so that the strain gauges respectively located in the first load cell 98 and the second load cell 100 are proportional to the weight loaded. changes its resistance. The change in resistance of each strain gauge is output as a proportional voltage signal to the load of the load cell. The central processing unit 118 amplifies, filters, and compensates the voltage signal, and converts the analog signal into a digital signal representing the weight of the luggage case 10 and its contents. The display module 122 displays the digital signal representing the weight of the luggage case 10 and its contents on the display 126 in numerical form. Its weight value can be displayed for a few seconds when the luggage case 10 is lifted off the ground and placed on the ground.

FIG. 5 shows a luggage case 200 including a weight measurement module 204 according to another embodiment of the present invention. The luggage case 200 includes side walls 208, 212 (parts of which are not shown), a top wall 216 and a bottom wall (not shown). The top wall 216 is connected to each of the side walls 208, 212, and the bottom wall is also connected to each of the side walls 208, 216 to form a receiving cavity for placing personal belongings or other items. Each wall of the suitcase 200 shown in FIG. 5 can be designed as a rectangle with appropriate dimensions, but can also be appropriately designed as other shapes, such as square, circular, trapezoidal, and so on. Generally, the walls 208, 212, 216, and the walls not shown are made of materials such as ABS, PC or PP, and other suitable materials can also be used to combine or add the above materials.

Although not shown in the figure, according to common sense, at least one wheel may be provided on the bottom wall of the suitcase 200 to facilitate the maneuverability of the suitcase 200 . The luggage case 200 also includes a handle 220, the handle 220 has a first end 228 and a second end 236, the handle 220 is provided with a first hole 224 near the first end 228, and a hole 224 is provided near the second end 236. There is a second hole 232 . The first hole 224 and the second hole 232 are respectively used for placing fasteners 240 such as screws. Fasteners 240 pass through the top wall 216 to connect the handle 220 to the weight measurement module 204 . The handle 220 includes a plurality of end caps 244 respectively disposed on the first end 228 of the handle 220 and the second end 232 of the handle 220 to fix corresponding fasteners 240 .

The weight measurement module 204 includes a housing 248 having a cavity 252 for fastening the weight measurement module 204 to the inner surface 256 of the top wall 216 using a plurality of fasteners, such as screws. The shell 248 is made of aluminum, other suitable materials can also be used, or made of composite materials. The weight measurement module 204 includes a compartment 260 disposed on the outer surface of the housing 248 for placing a power source, which may be one or more batteries (such as lithium batteries, alkaline batteries, etc.). The compartment 260 is closed with a cover for easy access to the power supply.

The weight measurement module 204 also includes a first load cell 262 located near the first end 264 of the housing 248 , and a second load cell 266 located near the second end 268 of the housing 248 . Both the first load cell 262 and the second load cell 266 are disposed within the cavity 252 of the housing 248 . The first load cell 262 includes a first aperture 270 and the second load cell 266 includes a second aperture 272 . The first hole 270 and the second hole 272 are used for placing the fastener 240 through the top wall 216 to connect the first load cell 262 and the second load cell 266 to the handle 220 . The first load measuring unit 262 and the second load measuring unit 266 also include holes at the ends of the load measuring units 262 , 266 for setting fasteners, such as screws, to connect the load measuring units 262 , 266 with the housing 248 . The weight measuring module 204 also includes a central processing unit 274 for receiving and processing data from the first load measuring unit 262 and the second load measuring unit 266 and outputting data representing weight. The weight measurement module 204 also includes a display module 276, which includes a display 278 (such as an LCD) to receive data from the CPU and display values. The display module 276 also includes a first switch (such as an on/off button) for triggering the weight measurement module 204, and a second switch for switching the weight unit kg/lb. The display module may include more switches or buttons for other functions. The display 278 and switches at least partially penetrate the top wall 216 .

The weight measurement module 204 further includes a housing 280 connected to the weight measurement module through the top wall 216 . The housing 280 includes a plurality of notches 284, 286 for receiving switches. The housing 280 also includes a notch 288 to support a panel 290 for keeping dirt and dust out of the display module 276 . The outer shell 280 and panels 290 can provide the user with a clean appearance of the luggage case 200 . The casing 280 is provided with a label for reminding the user about the use method of the switch.

The weight measurement module 204 is used to measure and display a value representing the weight of the luggage case 200 and its contents. When in use, the user can press the first switch to trigger the central processing unit 274, and then grasp the handle 220 of the suitcase to lift the suitcase 200 off the ground. The total weight of the luggage case 200 and its contents is measured by the weight measurement module 204 . More specifically, when applied to the handle 220 of the luggage case 10 , the strain gauges respectively located in the first load cell 262 and the second load cell 266 change their resistance in proportion to the weight being loaded. The change in resistance of each strain gauge is output as a proportional voltage signal to the load of the load cell. The central processing unit 274 amplifies, filters, and compensates the voltage signal, and converts the analog signal into a digital signal representing the weight of the luggage case 200 and its contents. The display module 276 displays the digital signal representing the weight of the luggage case 200 and its contents on the display 278 in numerical form. The weight value may be displayed for a few seconds as the luggage case 200 is lifted off the ground and back on the ground.

Figures 6-12 show the weight measurement modules of other embodiments of the present invention that can be included in different types of luggage. The weight measurement module can be contained in any size and shape of luggage.

As shown in FIG. 6 , the weight measurement module 300 may be disposed on at least one wall of the luggage, which includes a housing 304 and a display module 308 for displaying the weight of the luggage and its contents. The display module 308 includes a mark plate 312 and an indicator needle 316 that rotates around the point 320 and points to a mark 324 on the mark plate 312 , for indicating the weight of the suitcase and its contents. The housing 304 includes a recess 324 for receiving the display module 308 . The weight measurement module 300 includes a mainspring connected to the handle 332 and the indicator needle 316 .

The weight measurement module 300 is used to display the weight of the suitcase and its contents. In use, the user can grasp the handle 332 of the luggage case and lift the luggage case off the ground. The total weight of the suitcase and its contents is measured by the weight measurement module 300 . More specifically, as the luggage applies force to the handle and weight measurement module 300, the clockwork drive indicator needle 316 rotates about point 320, indicating the weight of the luggage and its contents.

FIG. 7 shows a modified structure of the weight measurement module 300 . In this configuration, the handle 332 is connected to a first shaft 336 . The first shaft 336 is disposed along the transverse direction of the handle, and one or more straps 340 and a tie 344 are disposed on the first shaft 336 . The link 344 is connected to the indicator needle 316 so that it can rotate about the fulcrum 320 . The housing 304 is connected to a second shaft 348 , and the second shaft 348 is connected to a plurality of straps 340 .

The weight measurement module 300 shown in FIG. 7 can display the total weight of the luggage case and its contents. In use, the user can grasp the handle 332 of the luggage case and lift the luggage case off the ground. The total weight of the suitcase and its contents is measured by the weight measurement module 300 . More specifically, as the luggage applies force to the handle and weight measurement module 300 , the strap 340 is tensioned as the first shaft 336 moves with the strap 340 . The ring 344 also moves with the first shaft 336 a distance proportional to the total weight of the luggage and its contents. When the ring 344 exerts force on the indicator needle 316 , the indicator needle 316 connected to the ring 344 also moves together, so that the indicator needle 316 rotates around the fulcrum 320 .

FIG. 8 illustrates another embodiment of a weight measurement module 400 that can display the weight of a luggage case 404 and its contents. The weight measurement module 400 includes a housing 408 and a handle 412 connected to the housing 408 . The outer shell 408 is attached to the outer surface 416 of the luggage case 404 . The housing 408 is generally "T-shaped" as shown in FIG. 8 , and may also be in other shapes.

The housing 408 includes a first end 420 , a second end 424 and an intermediate section 428 between the first end 420 and the second end 424 . The handle 412 includes a first aperture 432 proximate the first end 420 and a second aperture 436 proximate the second end 424 . The first hole 432 and the second hole 436 are respectively used to provide fasteners, such as screws, to connect the handle 412 to the housing 408 and at least one load cell. The intermediate section 428 is connected to a display 440 which is visible from the exterior of the luggage case 404 . The intermediate section 428 is also connected to an electronic component, such as a central processing unit, to receive electrical signals from at least one load cell (not shown) located in the housing 408 . The working mode of the pressure measuring unit is similar to the description of the two pressure measuring units in the above embodiments.

In use, the user can grasp the handle 412 of the luggage to lift the luggage 404 off the ground. The total weight of the suitcase 404 and its contents is measured by the weight measurement module 400 . More specifically, when the suitcase 404 exerts force on the handle 412 and the weight measurement module 400, that is, exerts force on the pressure measuring unit, the electronic component receives the electrical signal generated by the pressure measuring unit, and converts the electrical signal into a representation A numerical value for the weight of the suitcase 404 and its contents. The display 440 displays the value to the user.

FIG. 9 shows a cross-section of another embodiment of a weight measurement module 500 that can display the weight of a luggage case and its contents. The weight measurement module 500 includes a housing 504 attached to a wall 508 of the luggage case. A handle 512 is attached to the wall 508 of the luggage case. The weight measurement module 500 includes an electronic component 516 and a load cell 520 electrically connected to the electronic component 516 . The electronic assembly 516 is attached to the wall 508 of the luggage case using a plurality of fasteners, such as screws. The space between the electronic component 516 and the pressure measuring unit 520 forms a first space interval. The load cell 520 is connected to the housing 504 through a gasket 528 . The gasket 528 is connected to the first end of the load cell 520 to form a second space 532 between the load cell 520 and the housing 504 . The weight measurement module 500 also includes a cable 536 passing through the wall 508 and connected to the load cell 520 and the handle 512 . The weight measurement module 500 further includes a display 540 connected to the housing 504 to display a value representing the weight of the luggage case and its contents.

In use, the user can grasp the handle 512 of the suitcase and lift the suitcase off the ground. The total weight of the suitcase and its contents is measured by the weight measurement module 500 . More specifically, when the suitcase exerts force on the handle 512 and the weight measurement module 500 , the cable 536 exerts force on the load cell 520 . The load cell 520 bends and generates an electrical signal representing the amount of bending. The electronic component 516 receives the electrical signal generated by the pressure measuring unit 520 and converts the electrical signal into a value representing the total weight of the suitcase and its contents, and the display 440 displays the value to the user.

FIG. 10 illustrates another embodiment of a weight measurement module 600 that can display the total weight of a luggage case 604 and its contents. The weight measurement module 600 includes a housing 608 , a display 612 connected to the housing 608 , and a handle 616 connected to the housing 608 . The weight measurement module 600 is detachably connected to the suitcase 604 .

The weight measurement module 600 includes a cable 620 that can be connected to the luggage case 604 when the user wishes to measure the weight of the luggage case 604 and its contents. The luggage case 604 includes a recess 624 including a wall 628 in which a metal piece 632 is embedded, and the metal plate 632 has a protrusion 636 extending through the wall 628 of the luggage case 604 to facilitate attachment of The weight measurement module 600 is described above.

In use, the user connects the weight measurement module 600 to the protrusion 636 on the metal sheet 632, and uses the handle to lift the luggage case 604 off the ground. The weight measurement module measures the weight of the suitcase 604 and its contents, and displays a value representing the weight of the suitcase 604 and its contents.

11A-11B partially illustrate another embodiment of a weight measurement module 700 that can display the total weight of a luggage case 704 and its contents. The luggage case 704 includes a plurality of wheels 708 and feet 710 attached to a bottom 712 of the luggage case 7204 . The weight measurement module 700 includes a plurality of load cells respectively attached to the inner surface of the bottom 712 adjacent to each of the wheels 708 and feet 712 . The weight measurement module 700 also includes a housing 720 connected to the inner surface of the top wall 724 of the luggage case 704 , and a display 728 connected to the housing 720 and passing through the top wall 724 . A central processing module 732 is disposed within the housing 720 to receive data from each load cell 716, process the data, and output data representing the weight of the luggage case 704 and its contents. Each of the pressure measuring units 716 is electrically connected to the central processing unit 732 .

The weight measurement module 700 measures and displays a value representing the weight of the luggage case 704 and its contents. In use, the user places the luggage case 704 so that the wheels 708 and feet 710 are in contact with the ground. The weight of luggage case 704 and its contents is then applied to load cell 716 . More specifically, when the suitcase 704 exerts force on the load cell 716, the load cell 716 makes a strain gauge disposed inside the load cell tense, corresponding to the weight change its resistance. The change of the strain gauge resistance generates a corresponding voltage signal, which is output to the load of the load cell 716 . The CPU 732 receives, amplifies, filters, and converts each output analog signal to a digital signal representing the weight of the luggage case 704 and its contents, which can be displayed for several seconds.

Fig. 12 shows the deformed structure of the display module of the weight measurement module described in any of the above embodiments. In this configuration, the display module 800 includes a display 804 attached to a wall 808 of the luggage case, adjacent to the handle. Accordingly, the wall 808 and the necessary holes in the wall 808 can be adjusted to accommodate the display 804 . The display module 800 includes an interface or dial 812 containing a plurality of indicator pins. The display module 800 includes a plurality of light emitting elements (LEDs) 816 and a switch 820 to activate the display and/or the weight measurement module. Each light unit 816 displays the weight of the suitcase and its contents for a different weight range. For example, the display 804 includes a first LED, a second LED and a third LED. The first LED displays a weight of 0-50 pounds, the second LED displays a weight of 50-70 pounds, and the third LED displays a weight of 70 pounds or more. When the weight unit within the range displayed by the first LED, the second LED, and the third LED is kilogram (Kg), it is displayed by the fourth LED. It is also possible to set a weight range different from that shown in FIG. 12, be larger, smaller than this range, or be different therefrom.

Figures 13-15 show another embodiment of a luggage case with a displayable weight of the luggage case 404 and its contents, including the weight measurement module 750 and the handle 754 connected to the weight measurement module 750, so The handle 754 is made of tough material. The handle 754 extends through the wall 758 of the luggage case with a first fastener 762 disposed at a first end 766 of the handle 754 and a second fastener 770 disposed at a second end 774 of the handle 754 . The luggage case 754 includes a plurality of end caps 778 respectively located at the first end 766 of the handle 754 and the first end 774 of the handle 754 to secure corresponding fasteners 762 , 770 .

The weight measurement module 750 includes a housing 780 having a cavity 782 for fastening to an inner surface 786 of the wall 758 by a plurality of fasteners, such as screws. The housing 780 includes a compartment 790 for housing a power source 794, such as one or more batteries (eg, lithium batteries, alkaline batteries, etc.). The compartment 790 may be closed by a cover to facilitate access to a power source 794 .

The weight measurement module 750 also includes a load cell assembly 798 disposed in the cavity 782 . The load cell assembly 798 is not in contact with the housing 780 . The load cell assembly 798 includes a housing 800 that includes a body 802 and a first arm 806 extending from the body 802 , and a second arm 810 extending from the body 802 . The first arm 806 includes a first hole 814 disposed at an end 818 of the first arm 806 . The second arm 810 includes a second hole 822 disposed at an end 826 of the second arm 810 . The first hole 814 is used for disposing the first fastener 762 , and the second hole 822 is used for disposing the second fastener 770 , so as to connect the handle 754 to the load cell assembly 798 through the wall 758 .

The longitudinal axis 826 of the load cell assembly 798 is along the line connecting the first hole 814 and the second hole 822 . The load cell assembly 798 includes a first unit 830 connected to the main body 802 with a lengthwise axis 834 perpendicular to the axis 826 . The load cell assembly 798 also includes a second unit 838 connected to the main body 802 with a lengthwise axis 842 perpendicular to the axis 826 . The axis 842 of the second unit 838 has a certain distance from the axis 834 of the first unit 830 and is parallel to the axis 834 . The first unit 830 includes a first hole 846 for installing a fastener 850 (such as a screw), and the second unit 838 includes a second hole 854 for installing a fastener 858 (such as a set screw). The fasteners 850 , 854 are attached to the wall 758 to attach the first unit 830 and the second unit 838 to the wall 758 .

The load cell assembly 798 further includes a load cell 862 disposed on the main body 802 and fixed by the first unit 830 and the second unit 838 . The load cell 862 is separated from the load cell assembly housing 800 by fasteners 864 or struts. The load cell 862 includes a main body 866 , a first arm 870 extending from the main body 866 , and a second arm 874 extending along the main body 866 . The first arm 870 is connected to the first unit 830, and the second arm is connected to the second unit 838. The main body 866 includes a U-shaped hole 878, and a strain gauge is disposed in the hole 878.

The weight measurement module 750 also includes a central processing unit 882 to receive load cell data, process and compensate the data, and output data representing weight. The weight measurement module 750 also includes a display module 886 having a display 890 (such as an LCD) for displaying data from the central processing unit 882 in numerical form. The display module 886 also includes a switch 894 (such as an on/off button) for triggering the weight measurement module 750 . The display module 886 may include switches or buttons for other functions. The display 890 extends at least partially through the wall 758 .

In use, the user can grasp the handle 754 of the luggage case and lift it off the ground. The total weight of the suitcase and its contents is measured. More specifically, when the luggage applies force to the handle 754 and load cell assembly 798, the housing 800 of the load cell moves upward, causing the fastener 864 to move upward, thus creating a force against the load cell 862 when the first When the supporting unit 830 and the second supporting unit 838 are still in contact with the wall 758, the force on the load measuring unit 862 causes the strain gauge on the load measuring unit 862 to change resistance according to the loaded weight, and output a corresponding voltage signal to the external load. The CPU 882 receives the voltage signal generated by the load cell 862 and processes (eg amplifies, selects, combines, compensates and converts) the voltage signal into a digital signal representing the weight of the suitcase and its contents. The display 890 displays to the user in the form of numerical values. This weight value is displayed for a few seconds from when the suitcase is lifted off the ground to when it is lowered to the ground.

Claims (16)

1. A luggage case with a weight measuring module, comprising a plurality of side walls, a top wall connecting each side wall, a bottom wall connecting each side wall, the plurality of side walls, top wall and bottom wall forming a container cavity; also includes a handle and a weight measurement module; the handle is connected to the top wall, and the weight measurement module is connected to the handle through the top wall; The weight measurement module includes: a shell connected to the inner surface of the top wall, a power supply and a central processing unit arranged in the shell, electrically connected to the central processing unit, and mechanically connected to the handle and the shell by fasteners The first pressure measuring unit and the second pressure measuring unit, and a display connected to the outer surface of the shell and the top wall; The central processing unit is used to process the data from the first load cell and the second load cell and send the data to the display to display the weight of the suitcase, wherein, The first pressure measurement unit and the second pressure measurement unit include standard scales arranged along the length direction of the casing. 2. The luggage case with a weight measurement module according to claim 1, wherein the central processing unit processes data from the first load cell and data from the second load cell to generate a representation A digital signal of the weight of the suitcase. 3. The luggage case with weight measurement module according to claim 1, characterized in that, the housing is T-shaped. 4 . The luggage case with a weight measurement module according to claim 1 , further comprising a switch passing through the top wall, electrically connected to the central processing unit, and used to trigger the central processing unit. 5. The suitcase with a weight measurement module according to claim 1, further comprising a switch passing through the top wall and electrically connected to the central processing unit for changing the weight measurement unit of the display . 6. The suitcase with weight measuring module according to claim 1, characterized in that, the first end of the standard scale is connected to the first end of the handle, and the second end of the standard scale is connected to the handle the second end of . 7. The luggage case with a weight measuring module according to claim 1, wherein the display shows the weight of the luggage case in digital form. 8. The luggage case with weight measurement module of claim 1, wherein the power source comprises a plurality of batteries. 9. The luggage case with weight measurement module of claim 1, wherein the housing is made of aluminum. 10. A luggage case comprising a plurality of side walls, a top wall connected to each side wall and a bottom surface connected to each side wall, the plurality of side walls, top wall and bottom surface forming an accommodating cavity; A plurality of wheels are arranged on the bottom surface; a retractable handle is connected to one of the side walls, the top wall and the bottom surface; a handle is connected to the top wall, and the handle includes a first end and a second end; A weight measurement module is connected on the inner surface of the top wall, the weight measurement module includes: a housing with a first end and a second end, the first end of the housing is connected to the first end of the handle, the The second end of the shell is connected to the second end of the handle; Also includes a scale having a first end and a second end, the first end of the scale is connected to the first end of the housing and the first end of the handle, and the second end of the scale is connected to the second end of the housing. end and the second end of the handle; the first strain gauge is connected on the scale near the first end of the scale to form a first load cell, and the second strain gauge is connected on the scale close to the first end of the scale The positions of the two ends form the second pressure measuring unit; A central processing unit is electrically connected to the first pressure measuring unit and the second pressure measuring unit; the central processor can receive data from the first pressure measuring unit and the second pressure measuring unit, and generate a digital signal indicating the weight of the suitcase and its contents, A display is electrically connected to the central processing unit for displaying digital values according to the digital signal; a switch is electrically connected to the central processing unit for triggering the central processing unit to generate the digital signal. 11. The luggage case of claim 10, wherein the display is attached to the housing and the top wall proximate to the handle. 12. The luggage case of claim 10, wherein the first end of the scale includes a first aperture, the second end of the scale includes a second aperture, the first aperture and the second aperture A fastener is fitted to attach the scale to the handle and the housing. 13. The luggage case of claim 10, further comprising a switch passing through the top wall, electrically connected to the central processing unit, for changing the weight measurement unit of the display. 14. The luggage case of claim 10, wherein the weight measurement unit further comprises a battery disposed within the housing. 15. The luggage of claim 14, wherein the power source comprises a plurality of batteries. 16. The luggage case according to claim 14, wherein the housing includes a compartment for supporting the power supply, and a cover for closing the compartment is correspondingly provided.

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