CN210664731U

CN210664731U - Waterproof electronic scale instrument

Info

Publication number: CN210664731U
Application number: CN201921760738.2U
Authority: CN
Inventors: 吕杰
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-18
Filing date: 2019-10-18
Publication date: 2020-06-02
Anticipated expiration: 2029-10-18

Abstract

The utility model relates to an electronic scale field, especially a waterproof electronic scale instrument. The problem that current electronic scale instrument leaks easily at the keyboard position and flows in and damage inside electrical components, the utility model provides a waterproof electronic scale instrument, through set up reliable waterproof construction improvement electronic scale instrument's waterproof performance to the key circuit board, avoid on the shell body that key position intaking flows in the inside electrical components that arouses and damages the inefficacy, specifically the key circuit board holds in the cavity of seting up on the upper cover surface, cover the key circuit board with the gum cover and waterproof to it, and fill up sealed gluey formation of gluing along circumference in succession between gum cover periphery and adjacent cavity inner wall and seal up and make waterproof sealing, protect the key circuit board in the cavity, water can not flow in the cavity again downwards after the key hole edge flows in during use and destroy the key circuit board. Reliable waterproof seal is done at the keyboard position to the electronic scale instrument, effectively prevents that water from flowing into internal damage electrical components from the keyboard position.

Description

Waterproof electronic scale instrument

Technical Field

The utility model relates to an electronic scale field, especially a waterproof electronic scale instrument.

Background

Common electronic scale includes integral type and two kinds of split type structures, and the electronic scale mainly includes the pan of steelyard and the electronic scale instrument as the gauge outfit, and wherein the integral type is mostly the platform scale, and the pan of steelyard is established on the electronic scale instrument, and split type is mostly vertical scale, and the electronic scale instrument is located on same metal rack with the pan of steelyard components of a whole that can function independently and is connected through the wire. In the multi-purpose split vertical scale of the aquatic product counter or the refrigeration house in the market, the split scale plate is convenient for weighing/pricing articles, the working environments of the aquatic product counter and the refrigeration house are humid, the waterproof performance of an electronic scale instrument at the key position is poor, workers who buy and sell aquatic products and register in and out of the refrigeration house can be stained with the keys on a water operation instrument by hands frequently, careless water can flow into the electronic scale instrument from key hole edge gaps of the keys, and the electric appliance elements in the instrument are damaged due to the fact that water easily enters the instrument after long-term use in the environment, and normal work of the electronic scale is influenced. For this reason, people usually cover a plastic film on the keyboard to cover the whole key area for water-proofing, so as to avoid water flowing into the instrument from the key position, but this water-proofing method can only be used temporarily and still has the risk of water inflow, the plastic film is easy to fall off or break to generate gaps, and the risk of water leakage from the keyboard position is still great.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model and the technical task that provides overcome current electronic scale instrument and leak easily at the keyboard position and flow in the problem that damages inside electrical components, the utility model provides a waterproof electronic scale instrument, the electronic scale instrument is reliable waterproof sealed at the keyboard position, prevents effectively that water from flowing in inside damage electrical components from the keyboard position.

The utility model provides a technical scheme that technical problem adopted: a waterproof electronic scale instrument comprises an outer shell, a base arranged in the outer shell, a battery, a power switch and a charging interface on the outer shell, wherein the base is fixedly provided with an upper cover, a control circuit board and a display device are arranged in a cavity between the base and the upper cover, the display device comprises a display circuit board and a display screen fixed on the display circuit board, the upper cover is transparent at the position above the corresponding display screen, the upper cover is provided with a key circuit board with a plurality of keys, the top surface of the outer shell is provided with key holes corresponding to the keys one by one and a display window corresponding to the display screen, each key is externally covered with a hollow metal key cap, the key caps are limited in the corresponding key holes, the top ends of the key caps extend out of the key holes, the battery, the charging interface, the power switch, the key circuit board and the display circuit board are all connected with the control circuit board, and, the wire is worn to establish in cavity inner wall trompil and is connected key circuit board and control circuit board, establishes flexible gum cover lid on key circuit board in the cavity, integrated into one piece has hollow protruding cover on the button that corresponds on the gum cover, and the arch stretches out from the keyhole, metal key cap cover is put protruding, the gum cover is around the continuous sealed glue that blocks up of circumference between its periphery and the adjacent cavity inner wall. The utility model improves the waterproof performance of the electronic scale instrument by adding a reliable waterproof structure to the key circuit board, and avoids the damage and failure of electrical elements caused by the inflow of water from the key position on the outer shell to the inside; the key circuit board is accommodated in a concave cavity formed in the surface of the upper cover, the key circuit board is covered by the rubber sleeve to be waterproof, the sealant is continuously filled and sealed between the periphery of the rubber sleeve and the inner wall of the adjacent concave cavity along the circumferential direction, the integrated rubber sleeve and the sealant of one circle along the periphery form a complete and reliable waterproof seal at the inlet of the concave cavity, the key circuit board in the concave cavity is protected, and water can not flow into the concave cavity after flowing from the edge of the keyhole during use to cause the damage of the key circuit board; the rubber sleeve is made of soft materials and has flexibility, hollow bulges are integrally formed on the rubber sleeve in the upper sea and are sleeved on the corresponding keys, the pressing and operation handfeel of the keys extending out of the key holes is not influenced, and the metal keycaps can still be sleeved on the bulges.

As further improvement and supplement to the above technical scheme, the utility model discloses a following technical measure: the rubber sleeve is characterized in that a pressing plate is arranged between the rubber sleeve and the outer shell, the outer shell presses the pressing plate tightly in the concave cavity of the upper cover to enable the pressing plate to tightly buckle the rubber sleeve, the pressing plate is provided with a hole corresponding to the protruding position, and the protrusion extends out of the hole upwards. The effect of clamp plate is that fix a position the gum cover and compress tightly it spacing in the cavity of upper cover, ensures that the gum cover hugs closely key circuit board, and hollow arch on the gum cover matches with corresponding key hole, and the cooperation is sealed along the gluey of gum cover periphery round, improves the water proof protection to key circuit board.

The inner wall of the concave cavity is composed of a side wall and a bottom wall which are vertical to each other, the side wall is formed by connecting four flat walls end to end, and the two adjacent flat walls are vertical to each other. The concave cavity is composed of four flat walls and a bottom wall, two adjacent flat walls in the four flat walls are perpendicular to each other, and the four flat walls are perpendicular to the bottom wall, so that the concave cavity with a regular shape is convenient for injection molding manufacturing and matching with a rubber sleeve and a pressing plate, and the upper cover and the pressing plate can be manufactured through one-time injection molding.

The rubber sleeve is characterized in that a circle of convex ribs are arranged on the bottom wall, the convex ribs are formed by connecting four sections end to end in a closed mode, each section of convex rib is parallel to the flat wall of the same side and keeps a gap with the flat wall, an annular caulking groove is formed between each section of convex rib and the corresponding side wall along the circumferential direction, the periphery of the rubber sleeve is provided with a sealing edge matched with the shape of the annular caulking groove, and the pressing plate tightly buckles the rubber sleeve to enable the sealing edge to be embedded into the annular caulking groove.

The shell body comprises the lower casing of metal material and the last casing of lock joint on it, goes up the casing and encircles the periphery and establishes the hem and wrap up in the casing periphery outside down, keyhole 11 and display window 21 all establish on last casing 17, go up the casing tight fit buckle cover outside the upper cover, the casing is established a plurality of mounting holes along the periphery and is worn to establish the screw and can dismantle with the upper cover and be connected down. The upper and lower two halves of the shell are made of metal materials, so that the shell is firm and reliable, and meanwhile, the upper and lower two halves of the shell are butted with the upper cover so as to be convenient for assembling internal components; the hem that goes up the casing and surround the periphery setting wraps up in casing periphery outside down, helps improving the water-proof effects on casing surface, and the drop of water that drips on last casing surface can drip in casing periphery outside down along the hem downwards, is difficult for flowing into in the casing.

The charging interface is arranged on the side wall of the lower shell and comprises a tube seat fixedly arranged on the side wall in a penetrating mode and a socket interface arranged in the tube seat, an openable sealing end cover is arranged at the outer opening end of the tube seat, and the inner end of the tube seat is sealed and provided with a hole for sealing a penetrating wire to connect the socket interface and the control circuit board; the battery is arranged in a battery box of the fixed base, and a hole is formed in the battery box and is sealed to penetrate through a lead to be connected with the battery and the control circuit board; the base is provided with a mounting hole and seals the wire penetrating socket interface and the battery; the base is provided with a peripheral opening penetrating through a screw to connect with the upper cover and is continuously filled with sealing glue at the joint position of the base and the upper cover along the periphery. The charging interface consists of a fixed tube seat arranged on the side wall of the lower shell and a socket interface arranged in the fixed tube seat, the tube seat is also provided with an openable sealing end cover, the waterproof and dustproof effects of the charging interface are effectively improved, and the end cover is only required to be turned over to be connected with an external power supply during charging; the battery also has the sealed parcel of independent battery case to go out to fill up at the trompil threading of battery case and seal up sealed glue and carry out waterproof sealing, the mounting hole of wearing the wire on the base also all plugs up with sealed glue, all beats around the whole piece position of periphery round between base and the upper cover and glues sealedly, even in having some rivers to advance the shell like this, can not influence battery and control circuit board yet.

The power switch is an independent switch button arranged on the outer shell, or the power switch is one of a plurality of buttons as a power button, the switch button or the power button is connected with the control circuit board through a lead, and the switch button is hermetically sleeved in a flexible sealing cover on the fixed outer shell; the transformer with the sealing shell is arranged in the lower shell, an input end lead of the transformer is connected with the socket interface, and an output end lead of the transformer is connected with the control circuit board. The power switch can adopt various forms, and can be a switch button independently arranged on the outer shell, or one of the keys as a power key; when the power switch adopts an independent switch button, the switch button is hermetically arranged on the outer shell and can be operated independently and is not easy to be touched by mistake to be closed, and the electronic scale and the meter are preferably a weighing scale; when the power switch adopts a power key, the operation is more intuitive and easy, and the electronic scale and the meter are preferably a valuation scale; the socket interface can be directly connected with common 220V alternating current through a transformer to charge a built-in battery.

The utility model discloses an add reliable waterproof construction and improve electronic scale instrument's waterproof performance to key circuit board, avoid on the shell body that key position intaking flows in the inside electrical components who arouses and damages the inefficacy, specifically key circuit board holds in the cavity that upper cover surface was seted up, cover key circuit board waterproof to it with the gum cover, and fill up sealed glue formation sealing adhesive layer along circumference in succession between gum cover periphery and adjacent cavity inner wall and make waterproof sealing, protect the key circuit board in the cavity, water can not flow in the cavity again downwards after the key hole edge flows in during the use and destroy key circuit board.

Drawings

FIG. 1: a first schematic diagram of a waterproof electronic scale.

FIG. 2: and a second schematic diagram of the waterproof electronic scale instrument.

FIG. 3: the structure of figure 2 is exploded.

FIG. 4: fig. 3 is an enlarged view of part a.

In the figure: 1. the novel power supply comprises an outer shell, a base, a power switch, a charging interface, a socket interface, a sealing end cover, a cavity, an upper cover, a control circuit board, a display screen, a key circuit board, a key hole, a cavity, a side wall, a bottom wall, a convex rib, an annular embedding groove, a rubber sleeve, a bulge, a sealing folding edge, a pressing plate, a hole, a lower shell, a key box, a battery box, a flexible sealing cover, a sealing shell, a display window, a key cap and a power supply key, wherein the outer shell, the base, the display window, the key cap, the.

Detailed Description

The invention will be further described with reference to the following description and embodiments in conjunction with the accompanying drawings.

As shown in fig. 2-4, a waterproof electronic scale instrument comprises an outer shell 1, a base 2 arranged in the outer shell 1, a power switch 3 and a charging interface 4 on the battery and the outer shell 1, wherein the outer shell 1 is composed of a lower shell 16 made of metal material and an upper shell 17 fastened on the lower shell, a containing cavity is arranged on the lower shell 16, the upper shell 17 is provided with a hem 171 around the periphery and is wrapped on the outer side of the periphery of the lower shell 16, the base 2 is fixed with an upper cover 5, the lower shell 16 is provided with a plurality of mounting holes along the periphery and is detachably connected with the upper cover 5 by penetrating through screws, the upper shell 17 is tightly fastened and covered outside the upper cover 5, a cavity is arranged between the base 2 and the upper cover 5 and is internally provided with a control circuit board 6 and a display device, the display device comprises a display circuit board 7 and a display screen 8 fixed on the display circuit board, the upper cover 5 is transparent at the position corresponding to the upper side of the, the top surface of the upper shell 17 is provided with key holes 11 corresponding to the keys 9 one by one and a display window 21 corresponding to the display screen 8, each key 9 is covered with a hollow metal key cap 22, the key 12 is limited in the corresponding key hole 11, the top end of the key cap 22 extends out of the key hole 11, and the battery and charging interface 4, the power switch 3, the key circuit board 10 and the display circuit board 7 are all connected with the control circuit board 6; the surface of the upper cover 5 is provided with a cavity 12 for accommodating the key circuit board 10, the inner wall of the cavity 12 is composed of a side wall 121 and a bottom wall 122 which are vertical to each other, the side wall 121 is formed by connecting four flat walls end to end, the two adjacent flat walls are vertical to each other, the bottom wall 122 is provided with a circle of convex ribs 123, the convex ribs 123 are formed by connecting and closing four sections end to end, each section of convex rib 123 is parallel to the flat wall on the same side and keeps a gap with the flat wall, an annular embedding groove 124 is formed between the convex ribs 123 and the side wall 121 along the circumferential direction, the bottom wall 122 is provided with a hole for penetrating a lead to connect the key circuit board 10 and the control circuit board 6, the cavity 12 is internally provided with a flexible rubber sleeve 13 which is covered on the key circuit board 10, the rubber sleeve 13 is integrally formed with a hollow bulge 131 which is sleeved on the corresponding key 9, the bulge 131 extends out of the key hole 11, the periphery of the rubber sleeve 13, the rubber sleeve 13 is continuously filled with flexible sealant between the periphery of the rubber sleeve and the inner wall of the adjacent concave cavity 12 in the circumferential direction; a pressing plate 14 is arranged between the rubber sleeve 13 and the outer shell 1, the outer shell 1 presses the pressing plate 14 tightly in the cavity 12 of the upper cover 5, so that the pressing plate 14 is tightly buckled on the rubber sleeve 13, meanwhile, the pressing plate 14 is tightly buckled on the rubber sleeve 13, so that the sealing folded edge 132 is embedded into the annular caulking groove 124, the pressing plate 14 is provided with an opening 15 corresponding to the position of the bulge 131, and the bulge 131 extends upwards out of the opening 15; the charging interface 4 is arranged on the side wall of the lower shell 16, the charging interface 4 comprises a tube seat 41 fixedly arranged on the side wall in a penetrating way and a socket interface 42 arranged in the tube seat, the outer open end of the tube seat 41 is provided with an openable sealing end cover 43, the inner end of the tube seat 41 is sealed and provided with a hole for sealing a penetrating wire to connect the socket interface 42 and the control circuit board 6, the battery is arranged in a battery box 18 of the fixed base 2, the battery box 18 is positioned in an accommodating cavity of the lower shell 17 during assembly, the hole is formed in the battery box 18 for sealing the penetrating wire to connect the battery and the control circuit board 6, the base 2 is provided with a mounting hole for sealing the penetrating wire to connect the socket interface 42 and the battery, the base 2 is penetrated by a screw along the peripheral hole to connect the upper cover 5 and is continuously filled with sealant at; the power switch 3 is an independent switch button arranged on the outer shell 1, the electronic scale instrument with the independent switch button and the small number of keys is suitable for weighing, the switch button is sleeved in a flexible sealing cover 19 on the lower shell 16 fixedly in a sealing mode, the switch button is connected with the control circuit board 6 through a wire, a transformer with a sealing shell 20 is arranged in a containing cavity of the lower shell 16, an input end wire of the transformer is connected with the socket interface 42, and an output end wire of the transformer is connected with the control circuit board 6. In addition, as shown in fig. 1, the power switch may not be an independent switch button, but one key is used as the power key 23, the power key 23 is connected to the control circuit board 6 through a wire, the number of keys is more than that of the former one, and the rest is unchanged, so that the electronic scale instrument is suitable for being used as a valuation scale.

The utility model discloses an add reliable waterproof construction to the key circuit board and improve the waterproof performance of electronic scale instrument, avoid on the shell body button position intaking to flow into the electrical components damage inefficacy that the inside arouses, specifically the key circuit board holds in the cavity that sets up on the upper cover surface, cover the key circuit board with the gum cover and waterproof it, along the sealed glue of continuous packing in circumference between gum cover periphery and adjacent cavity inner wall and do sealedly, form complete waterproof sealing, protect the key circuit board in the cavity, water can not flow into the cavity again and destroy the key circuit board after flowing in from the keyhole edge during use; meanwhile, the main control circuit board and the display device are arranged in the cavity between the base and the upper cover, the base and the upper cover are continuously plugged and waterproof by sealant along a circle of the periphery at the splicing position, the perforation positions of all connecting leads are also plugged by the sealant, the internal waterproof effect is improved, the battery and the transformer are independently packaged, and even if a small amount of water flows into the outer shell, the electric appliance element cannot be influenced; the interface and the switch that charge of shell side also possess water-proof effects through the structure setting, make from this the waterproof electronic scale instrument also can normally work for a long time under humid environment such as aquatic products sales counter or freezer.

Claims

1. A waterproof electronic scale instrument comprises an outer shell (1), a base (2) arranged in the outer shell (1), a power switch (3) and a charging interface (4) arranged on a battery and the outer shell (1), wherein an upper cover (5) is fixed on the base (2), a control circuit board (6) and a display device are arranged between the base (2) and the upper cover (5) and are arranged in a cavity, the display device comprises a display circuit board (7) and a display screen (8) fixed on the display circuit board, the upper cover (5) is transparent at the position above the corresponding display screen (8), the upper cover (5) is provided with a key circuit board (10) with a plurality of keys (9), the top surface of the outer shell (1) is provided with key holes (11) corresponding to the keys (9) one by one and a display window (21) corresponding to the display screen (8), each key (9) is covered by a hollow metal keycap (22), the keycaps (22) are limited in the corresponding keyholes (11) and the top ends of the keycaps (22) extend out of the keyholes (11), the battery and charging interface (4), the power switch (3), the key circuit board (10) and the display circuit board (7) are all connected with the control circuit board (6), is characterized in that the surface of the upper cover (5) is provided with a concave cavity (12) for accommodating the key circuit board (10), the inner wall of the concave cavity (12) is provided with a hole for penetrating a lead to connect the key circuit board (10) and the control circuit board (6), the concave cavity (12) is internally provided with a flexible rubber sleeve (13) to cover the key circuit board (10), the rubber sleeve (13) is integrally formed with a hollow bulge (131) which is sleeved on the corresponding key (9), the bulge (131) extends out of the key hole (11), the metal key cap (22) is sleeved on the bulge (131), and the rubber sleeve (13) continuously fills up flexible sealant between the periphery of the rubber sleeve and the inner wall of the adjacent concave cavity (12) in a circumferential direction.

2. The waterproof electronic scale instrument according to claim 1, wherein a pressure plate (14) is arranged between the rubber sleeve (13) and the outer shell (1), the outer shell (1) presses the pressure plate (14) in the cavity (12) of the upper cover (5) to enable the pressure plate (14) to be tightly buckled on the rubber sleeve (13), an opening (15) corresponding to the position of the bulge (131) is formed in the pressure plate (14), and the bulge (131) extends upwards out of the opening (15).

3. The waterproof electronic scale and meter according to claim 2, wherein the inner wall of the cavity (12) is composed of a side wall (121) and a bottom wall (122) which are perpendicular to each other, the side wall (121) is formed by connecting four flat walls end to end, and the two adjacent flat walls are perpendicular to each other.

4. The waterproof electronic scale instrument as claimed in claim 3, wherein a circle of ribs (123) is arranged on the bottom wall (122), the ribs (123) are formed by connecting and closing four sections end to end, each section of rib (123) is parallel to the flat wall on the same side and keeps a gap with the flat wall, an annular caulking groove (124) is formed between the rib (123) and the side wall (121) along the circumferential direction, a sealing flange (132) matched with the annular caulking groove (124) in shape is arranged on the periphery of the rubber sleeve (13), and the pressing plate (14) is tightly buckled on the rubber sleeve (13) to enable the sealing flange (132) to be embedded into the annular caulking groove (124).

5. The waterproof electronic scale instrument as claimed in claim 1, wherein the outer casing (1) is composed of a lower casing (16) made of metal and an upper casing (17) fastened thereto, the key hole (11) and the display window (21) are both arranged on the upper casing (17), the upper casing (17) is provided with a folded edge (171) around the periphery and is wrapped downwards outside the periphery of the lower casing (16), the upper casing (17) is tightly fastened and covered outside the upper cover (5), and the lower casing (16) is provided with a plurality of mounting holes along the periphery and is connected with the upper cover (5) in a detachable manner by penetrating through screws.

6. The waterproof electronic scale instrument according to claim 5, wherein the charging interface (4) is arranged on the side wall of the lower shell (16), the charging interface (4) comprises a tube seat (41) fixedly arranged on the side wall in a penetrating way and a socket interface (42) arranged in the tube seat, an openable sealing end cover (43) is arranged at the outer opening end of the tube seat (41), and the inner end of the tube seat (41) is sealed and provided with a hole for sealing the penetrating wire connecting socket interface (42) and the control circuit board (6); the battery is arranged in a battery box (18) of the fixed base (2), and a hole is formed in the battery box (18) and is hermetically connected with the battery and the control circuit board (6) through a lead; the base (2) is provided with a mounting hole and seals a wire-penetrating socket interface (42) and a battery; the base (2) is provided with a screw connection upper cover (5) along the peripheral opening hole in a penetrating way and is continuously filled with sealing glue at the joint splicing position of the base (2) and the upper cover (5) along the periphery.

7. The waterproof electronic scale instrument according to claim 6, characterized in that the power switch (3) is an independent switch button arranged on the outer shell (1), or the power switch (3) is one of a plurality of keys (9) as a power key (23), the switch button or the power key (23) is connected with the control circuit board (6) through a lead, and the switch button is hermetically sleeved in a flexible sealing cover (19) on the fixed outer shell (1); the transformer with the sealing shell (20) is arranged in the lower shell (16), the input end of the transformer is connected with the socket interface (42) through a lead, and the output end of the transformer is connected with the control circuit board (6).