阅读说明：本技术 一种具有裁切和净化功能的pos机 (POS machine with cut and purification performance ) 是由 黄娉 于 2019-09-24 设计创作，主要内容包括：本发明涉及一种具有裁切和净化功能的POS机,包括外壳、屏幕、刷卡槽、识别装置、打印机、热敏纸、转动机构和若干按键,所述外壳内设有裁切机构、净化机构,所述裁切机构包括固定刀片、裁切刀片、铰接杆和启动组件,所述启动组件包括铁环、第一弹簧和电磁铁,所述净化机构包括吸头、吸气管、过滤盒、气泵、隔板、活性炭滤网、连接块、固定组件和出气管,该具有裁切和净化功能的POS机,通过裁切机构对热敏纸进行裁切,使单据切口更平整,防止手动拉扯热敏纸而造成热敏纸的浪费,不仅如此,通过净化机构吸附热敏纸反应后脱落下来的涂料粉末,防止粉末颗粒对打印机中的热敏元件造成磨损,提高了实用性。(The invention relates to a POS machine with cutting and purifying functions, which comprises a shell, a screen, a card brushing groove, an identification device, a printer, thermal sensitive paper, a rotating mechanism and a plurality of keys, wherein a cutting mechanism and a purifying mechanism are arranged in the shell, the cutting mechanism comprises a fixed blade, a cutting blade, a hinged rod and a starting assembly, the starting assembly comprises an iron ring, a first spring and an electromagnet, the purifying mechanism comprises a suction head, an air suction pipe, a filter box, an air pump, a partition plate, an active carbon filter screen, a connecting block, a fixing assembly and an air outlet pipe, the POS machine with the cutting and purifying functions cuts the thermal sensitive paper through the cutting mechanism, so that the cut of a document is smoother, the waste of the thermal sensitive paper caused by manually pulling the thermal sensitive paper is prevented, in addition, the cutting mechanism adsorbs coating powder dropped after the reaction of the thermal sensitive paper, and the abrasion of powder particles to a thermal sensitive element in the printer is prevented, the practicability is improved.)

1. A POS machine with cutting and purifying functions comprises a shell (1), a screen (2), a brush clamping groove (3), an identification device (4), a printer (5), thermal paper (6), a rotating mechanism and a plurality of keys (7), wherein the screen (2) and the keys (7) are arranged on the shell (1), the brush clamping groove (3) is fixed on one side of the shell (1), an identification port is arranged on one side, close to the brush clamping groove (3), of the shell (1), the identification device (4) is fixed in the shell (1), the periphery of one side of the identification device (4) is fixedly connected with the inner wall of the identification port, the rotating mechanism is arranged in the shell (1), one end of the thermal paper (6) is connected with the rotating mechanism, the printer (5) is arranged above the thermal paper (6), one end of the shell (1) is provided with a ticket outlet, the other end of the thermal paper (6) penetrates through the ticket outlet, and the thermal paper is characterized in that a cutting mechanism, a purification mechanism and a PLC are arranged in the shell (1), and the identification device (4), the printer (5) and the key (7) are electrically connected with the PLC;

the cutting mechanism comprises a fixed blade (8), a cutting blade (9), a hinge rod (10) and a starting assembly, the fixed blade (8) is fixed at the bottom in the shell (1), the cutting blade (9) is positioned above the fixed blade (8), one end of the cutting blade (9) is hinged with the fixed blade (8), and the other end of the cutting blade (9) is hinged with the starting assembly through the hinge rod (10);

the starting assembly comprises an iron ring (11), a first spring (12) and an electromagnet (13), the hinged rod (10) is hinged to the iron ring (11), two ends of the first spring (12) are respectively fixed to the top in the shell (1) and the upper portion of the iron ring (11), the first spring (12) is in a stretching state, the electromagnet (13) is located below the iron ring (11), and the electromagnet (13) is electrically connected with the PLC;

the purifying mechanism comprises a suction head (15), an air suction pipe (16), a filter box (17), an air pump (18), a partition plate (19), an activated carbon filter screen (20), a connecting block (21), a fixing component and an air outlet pipe (22), wherein the suction head (15) is arranged between the printer (5) and the cutting blade (9), the suction head (15) is positioned above the thermal paper (6), the filter box (17) is fixed in the shell (1), the air pump (18) is fixed on the filter box (17), the air pump (18) is communicated with the suction head (15) through the air suction pipe (16), the partition plate (19) is fixed on the inner wall of one side, close to the air pump (18), of the filter box (17), one end of the air outlet pipe (22) is positioned on one side, far away from the air pump (18), of the air outlet pipe (22) is communicated with the filter box (17), and the other end of the air outlet pipe (22) is arranged above a ticket outlet, be equipped with the socket on baffle (19), the one end setting of active carbon filter screen (20) is in the socket, be equipped with the notch on filter cartridge (17), the other end of active carbon filter screen (20) passes notch and connecting block (21) fixed connection, fixed subassembly is located one side that is close to connecting block (21) of filter cartridge (17), air pump (18) are connected with the PLC electricity.

2. The POS machine with cutting and purifying functions according to claim 1, wherein the starting assembly further comprises a limiting rod (14), the iron ring (11) is sleeved on the limiting rod (14), and the electromagnet (13) is fixedly connected with the limiting rod (14).

3. POS machine with cutting and cleaning functions according to claim 2, characterised in that the limit rod (14) is coated with a lubricating oil.

4. The POS machine with cutting and purifying functions as claimed in claim 1, wherein the thermal paper (6) is provided with two blocks (23) on both sides, the sides of the two blocks (23) close to each other are provided with communicating ports, and both sides of the thermal paper (6) are respectively located in the two communicating ports.

5. The POS machine with cutting and purifying functions according to claim 1, wherein the rotating mechanism comprises a rotating shaft (24) and a motor (25), the thermal paper (6) is wound on the rotating shaft (24), the motor (25) is in transmission connection with the rotating shaft (24), and the motor (25) is electrically connected with the PLC.

6. POS machine with cutting and cleaning functions, according to claim 5, characterized in that the motor (25) is a DC servomotor.

7. The POS machine with cutting and purifying functions according to claim 1, wherein the fixing component comprises a fixing block (26), a mounting block (27) and a second spring (28), the fixing block (26) is fixed on the outer wall of the filter box (17), a cavity is arranged in the fixing block (26), a through hole is arranged on one side, close to the connecting block (21), of the fixing block (26), the through hole is communicated with the cavity, a mounting opening is arranged on the connecting block (21), one end of the mounting block (27) is arranged in the cavity, the other end of the mounting block (27) penetrates through the through hole and is arranged in the mounting opening, the mounting block (27) is connected with the cavity in a sliding mode, two ends of the second spring (28) are fixedly connected with the mounting block (27) and the inner wall of the cavity respectively, and the spring is in a compressed state.

8. POS machine with cutting and cleaning functions according to claim 7, characterized in that the mounting block (27) is conical in shape, the conical bottom of the block (27) being arranged inside the cavity.

9. POS machine with cutting and cleaning functions according to claim 1, characterized in that the end of the casing (1) close to the ticket outlet, on the side remote from the screen (2), is provided with an opening in which a removal plate (29) is placed.

10. POS machine with cutting and cleaning functions, according to claim 1, characterized in that the fixed blade (8) and the moving blade are made of stainless steel.

Technical Field

The invention relates to the field of handheld terminals, in particular to a POS machine with cutting and purifying functions.

Background

The POS means 'point of sale' in Chinese, is called as a point of sale information management system, is a terminal reader equipped with bar code or OCR code technology and has cash or barter function. The main task is to provide data service and management function for commodity and media transaction and to perform cashless settlement. The POS is a multifunctional terminal, and is installed in special commercial tenant and acceptance network of credit card, and connected with computer to form network, so that it can implement automatic electronic fund transfer, and has the functions of supporting consumption, preauthorization, balance inquiry and transfer, etc. and is safe, quick and reliable in use.

The existing POS machine can print a document after the card is swiped, the document needs to be torn off by a hand of a worker when sliding out, a cut is usually not smooth and troublesome, printing paper pulled out sometimes is too much and can cause waste, and moreover, the printing paper is subjected to color reaction after being heated, coating powder can fall off from the printing paper, abrasion is caused to a thermosensitive element of the printer, and the practicability is reduced.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, the POS machine with the cutting and purifying functions is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a POS machine with cutting and purifying functions comprises a shell, a screen, a card brushing slot, a recognition device, a printer, thermal paper, a rotating mechanism and a plurality of keys, the screen and the keys are arranged on the shell, the card swiping slot is fixed on one side of the shell, an identification port is arranged on one side of the shell close to the card swiping slot, the identification device is fixed in the shell, the periphery of one side of the identification device is fixedly connected with the inner wall of the identification port, the identification device is arranged opposite to the card swiping groove, the rotating mechanism is arranged in the shell, one end of the thermal paper is connected with the rotating mechanism, the printer is arranged above the thermal paper, one end of the shell is provided with a ticket outlet, the other end of the thermal paper passes through the ticket outlet, the shell is internally provided with a cutting mechanism, a purification mechanism and a PLC, and the identification device, the printer and the keys are electrically connected with the PLC;

the cutting mechanism comprises a fixed blade, a cutting blade, a hinge rod and a starting assembly, the fixed blade is fixed at the bottom in the shell, the cutting blade is positioned above the fixed blade, one end of the cutting blade is hinged with the fixed blade, and the other end of the cutting blade is hinged with the starting assembly through the hinge rod;

the starting assembly comprises an iron ring, a first spring and an electromagnet, the hinged rod is hinged with the iron ring, two ends of the first spring are respectively fixed at the top in the shell and above the iron ring, the first spring is in a stretching state, the electromagnet is positioned below the iron ring, and the electromagnet is electrically connected with the PLC;

the purifying mechanism comprises a suction head, an air suction pipe, a filter box, an air pump, a partition plate, an activated carbon filter screen, a connecting block, a fixing component and an air outlet pipe, the suction head is arranged between the printer and the cutting blade, the suction head is positioned above the thermal paper, the filter box is fixed in the shell, the air pump is fixed on the filter box, the air pump is communicated with the suction head through the air suction pipe, the partition plate is fixed on the inner wall of one side, close to the air pump, of the filter box, one end of the air outlet pipe is positioned on one side, far away from the air pump, of the partition plate, the air outlet pipe is communicated with the filter box, the other end of the air outlet pipe is arranged above the ticket outlet, the partition plate is provided with a socket, one end of the activated carbon filter screen is arranged in the socket, the filter box is provided with a notch, the, the air pump is electrically connected with the PLC.

Preferably, in order to limit the moving direction of the iron ring, the starting assembly further comprises a limiting rod, the iron ring is sleeved on the limiting rod, and the electromagnet is fixedly connected with the limiting rod.

Preferably, the stopper rod is coated with a lubricant in order to move the iron ring more smoothly.

Preferably, in order to limit the moving direction of the thermal paper, two sides of the thermal paper are provided with clamping blocks, one sides of the two clamping blocks, which are close to each other, are provided with communicating ports, and two sides of the thermal paper are respectively located in the two communicating ports.

Preferably, in order to drive the thermal paper to move, the rotating mechanism comprises a rotating shaft and a motor, the thermal paper is wound on the rotating shaft, the motor is in transmission connection with the rotating shaft, and the motor is electrically connected with the PLC.

Preferably, the motor is a dc servo motor in order to increase the driving force of the motor.

As preferred, for the fixed connection piece, fixed subassembly includes fixed block, installation piece and second spring, the fixed block is fixed on the outer wall of filter cartridge, be equipped with the cavity in the fixed block, one side that is close to the connecting block of fixed block is equipped with the through-hole, through-hole and cavity intercommunication, be equipped with the installing port on the connecting block, the one end setting of installation piece is in the cavity, the other end of installation piece passes the through-hole setting in the installing port, installation piece and cavity sliding connection, the both ends of second spring respectively with the inner wall fixed connection of installation piece and cavity, the spring is in compression state.

Preferably, the mounting block is tapered in shape, with a tapered bottom portion disposed in the cavity, in order to drive the mounting block to retract into the cavity as the connecting block moves.

Preferably, in order to facilitate replacement of the thermal paper and the activated carbon filter screen, an opening is formed in one end, close to the ticket outlet, of one side, far away from the screen, of the shell, and a detaching plate is arranged in the opening.

Preferably, the fixed blade and the moving blade are made of stainless steel in order to prevent the fixed blade and the moving blade from rusting.

The POS machine with the cutting and purifying functions has the advantages that the cutting mechanism cuts the thermal paper, so that the cut of the document is smoother, compared with the existing cutting mechanism, the cutting mechanism reduces troubles for users, prevents the thermal paper from being wasted due to the fact that the thermal paper is pulled manually, and further, the purifying mechanism adsorbs coating powder falling off after the thermal paper reacts, so that the powder particles are prevented from wearing a thermal element in a printer.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the construction of a POS machine with cutting and cleaning functions according to the present invention;

FIG. 2 is a schematic view showing the structure of a cutting mechanism of a POS machine having cutting and cleaning functions according to the present invention;

FIG. 3 is a schematic view showing the structure of the purifying mechanism of the POS machine having cutting and purifying functions according to the present invention;

FIG. 4 is an enlarged view of portion A of FIG. 3;

in the figure: 1. the automatic cleaning device comprises a shell, a screen, a brush clamping groove, a recognition device, a printer, a heat-sensitive paper, a key 7, a fixed blade 8, a cutting blade 9, a hinge rod 10, an iron ring 11, a first spring 12, an electromagnet 13, a limiting rod 14, a suction head 15, an air suction pipe 16, a filter box 17, an air pump 18, a partition plate 19, an active carbon filter screen 20, a connecting block 21, an air outlet pipe 22, a clamping block 23, a rotating shaft 24, a motor 25, a fixing block 26, a mounting block 27, a second spring 28 and a dismounting plate 29.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in figure 1, the POS machine with cutting and purifying functions comprises a shell 1, a screen 2, a card swiping groove 3, an identification device 4, a printer 5, thermal paper 6, a rotating mechanism and a plurality of keys 7, wherein the screen 2 and the keys 7 are arranged on the shell 1, the card swiping groove 3 is fixed on one side of the shell 1, one side, close to the card swiping groove 3, of the shell 1 is provided with an identification port, the identification device 4 is fixed in the shell 1, the periphery of one side of the identification device 4 is fixedly connected with the inner wall of the identification port, the identification device 4 is opposite to the card swiping groove 3, the rotating mechanism is arranged in the shell 1, one end of the thermal paper 6 is connected with the rotating mechanism, the printer 5 is arranged above the thermal paper 6, one end of the shell 1 is provided with a ticket outlet, the other end of the thermal paper 6 penetrates through the ticket outlet, and a cutting mechanism is arranged in the shell 1, The recognition device 4, the printer 5 and the key 7 are electrically connected with the PLC;

a PLC, i.e., a programmable logic controller, which employs a programmable memory for storing therein a program, executing instructions for user-oriented operations such as logic operation, sequence control, timing, counting, and arithmetic operation, and controlling various types of machines or production processes through digital or analog input/output, is essentially a computer dedicated for industrial control, has a hardware structure substantially the same as that of a microcomputer, and is generally used for data processing and instruction reception and output for realizing central control.

The user sweeps the bank card from the card swiping groove 3, the identification device 4 identifies the bank card and deducts money, the printer 5 prints 6 pieces of thermal paper into a receipt, the rotating mechanism controls the thermal paper 6 to slide out from the ticket outlet, the cutting mechanism cuts the thermal paper 6, the purifying mechanism adsorbs coating powder dropped after the reaction of the thermal paper 6 to prevent the powder particles from causing abrasion to a thermal element in the printer 5,

as shown in fig. 2, the cutting mechanism includes a fixed blade 8, a cutting blade 9, a hinge rod 10 and an actuating assembly, the fixed blade 8 is fixed at the bottom inside the housing 1, the cutting blade 9 is positioned above the fixed blade 8, one end of the cutting blade 9 is hinged with the fixed blade 8, and the other end of the cutting blade 9 is hinged with the actuating assembly through the hinge rod 10;

the starting assembly comprises an iron ring 11, a first spring 12 and an electromagnet 13, the hinged rod 10 is hinged to the iron ring 11, two ends of the first spring 12 are respectively fixed to the top in the shell 1 and the upper side of the iron ring 11, the first spring 12 is in a stretching state, the electromagnet 13 is located below the iron ring 11, and the electromagnet 13 is electrically connected with the PLC;

after the document is printed, the PLC controls the electromagnet 13 to be powered on, the iron ring 11 drives the cutting blade 9 to move downwards through the hinge rod 10, the cutting blade 9 and the fixed blade 8 interact, the document is cut off, then the PLC stops powering on the electromagnet 13, and due to the fact that the spring is in a stretching state, the elastic force of the spring can drive the iron ring 11 to move upwards, and therefore the cutting blade 9 is reset.

As shown in fig. 3, the purifying mechanism includes a suction head 15, an air suction pipe 16, a filter box 17, an air pump 18, a partition plate 19, an activated carbon filter screen 20, a connecting block 21, a fixing component and an air outlet pipe 22, the suction head 15 is disposed between the printer 5 and the cutting blade 9, the suction head 15 is located above the thermal paper 6, the filter box 17 is fixed in the housing 1, the air pump 18 is fixed on the filter box 17, the air pump 18 is communicated with the suction head 15 through the air suction pipe 16, the partition plate 19 is fixed on the inner wall of the side of the filter box 17 close to the air pump 18, one end of the air outlet pipe 22 is located on the side of the partition plate 19 far away from the air pump 18, the air outlet pipe 22 is communicated with the filter box 17, the other end of the air outlet pipe 22 is disposed above the ticket outlet, a socket is disposed on the partition plate 19, one end of the, the other end of the activated carbon filter screen 20 penetrates through the notch to be fixedly connected with the connecting block 21, the fixing component is positioned on one side, close to the connecting block 21, of the filter box 17, and the air pump 18 is electrically connected with the PLC.

PLC control air pump 18 inhales, and the coating powder that drops from thermal paper 6 gets into suction head 15 along with the air, and rethread breathing pipe 16 gets into filter cartridge 17, and the coating powder is intercepted by active carbon filter screen 20, and the air passes active carbon filter screen 20 and bypasses baffle 19 and flows out from outlet duct 22, and outlet duct 22 air-out can also cool off the document that has just printed for the coating on the document solidifies, and fixed subassembly is used for realizing the installation and the dismantlement of active carbon filter screen 20 and connecting block 21.

Preferably, in order to limit the moving direction of the iron ring 11, the starting assembly further comprises a limiting rod 14, the iron ring 11 is sleeved on the limiting rod 14, and the electromagnet 13 is fixedly connected with the limiting rod 14.

The limiting rod 14 limits the moving direction of the iron ring 11, so that the cutting blade 9 moves along a fixed track, and the cutting blade 9 and the fixed blade 8 are ensured to interact to cut the thermal paper 6.

Preferably, the stopper rod 14 is coated with a lubricating oil in order to move the iron ring 11 more smoothly.

When the iron ring 11 slides along the limiting rod 14, the lubricating oil can reduce the frictional resistance on the iron ring 11, so that the iron ring 11 can move more smoothly.

Preferably, in order to limit the moving direction of the thermal paper 6, two sides of the thermal paper 6 are provided with the blocks 23, one sides of the two blocks 23 close to each other are provided with the communication ports, and two sides of the thermal paper 6 are respectively located in the two communication ports.

When the cutting mechanism cuts the printed receipt from the thermal paper 6, the two blocks 23 can limit the position of one end of the thermal paper 6 far away from the rotating mechanism, and when the rotating mechanism works again, one end of the thermal paper 6 far away from the rotating mechanism passes through the space between the fixed blade 8 and the cutting blade 9 along the communication ports on the two blocks 23 and slides out of the receipt outlet.

Preferably, in order to drive the thermal paper 6 to move, the rotating mechanism comprises a rotating shaft 24 and a motor 25, the thermal paper 6 is wound on the rotating shaft 24, the motor 25 is in transmission connection with the rotating shaft 24, and the motor 25 is electrically connected with the PLC.

The PLC control motor 25 drives the rotating shaft 24 to rotate, and drives the thermal paper 6 to roll, so that one end of the thermal paper 6, which is far away from the rotating shaft 24, penetrates through the space between the fixed blade 8 and the cutting blade 9 and slides out of the ticket outlet.

Preferably, the motor 25 is a dc servo motor in order to increase the driving force of the motor 25.

As shown in fig. 4, the fixed subassembly includes fixed block 26, installation piece 27 and second spring 28, fixed block 26 is fixed on the outer wall of filter cartridge 17, be equipped with the cavity in the fixed block 26, one side that is close to connecting block 21 of fixed block 26 is equipped with the through-hole, through-hole and cavity intercommunication, be equipped with the installing port on the connecting block 21, the one end setting of installation piece 27 is in the cavity, the other end of installation piece 27 passes the through-hole setting in the installing port, installation piece 27 and cavity sliding connection, the both ends of second spring 28 respectively with the inner wall fixed connection of installation piece 27 and cavity, the spring is in compression state.

Preferably, in order to drive the mounting block 27 to retract into the cavity when the connecting block 21 is moved, the mounting block 27 is tapered in shape, and the tapered bottom of the mounting block 27 is disposed in the cavity.

Because the spring is in compression state, the elasticity of spring makes the one end of fixed block 26 pass the through-hole setting in the installing port, realizes the fixed to connecting block 21, and when connecting block 21 removed, because the shape of installing block 27 is the toper, connecting block 21 can exert pressure to the toper side of installing block 27, makes connecting block 21 retract in the cavity to drive the spring compression.

Preferably, in order to facilitate replacement of the thermal paper 6 and the activated carbon filter 20, an opening is provided at one end of the housing 1, which is close to the ticket outlet, on the side away from the screen 2, and a detaching plate 29 is provided in the opening.

After the thermal paper 6 is used up, the user can take down the detaching plate 29 from the opening, then change the thermal paper 6, in order to prevent the coating powder from blocking the activated carbon filter screen 20, at intervals, the user needs to clean the activated carbon filter screen 20, at this moment, the detaching plate 29 is detached first, then the connecting block 21 is pulled, the activated carbon filter screen 20 is taken out from the filter box 17, then the coating powder adsorbed on the activated carbon filter screen 20 is removed, and finally the activated carbon filter screen 20 is put back to the original position.

Preferably, the fixed blade 8 and the moving blade are made of stainless steel in order to prevent the fixed blade 8 and the moving blade from rusting.

The fixed blade 8 and the moving blade are made of stainless steel, so that the service lives of the fixed blade 8 and the moving blade can be prolonged.

The user sweeps the bank card from the card swiping slot 3, the identification device 4 identifies the bank card and deducts money, the printer 5 prints 6 pieces of thermal paper into a receipt, the rotating mechanism controls the thermal paper 6 to slide out from the ticket outlet, the PLC controls the air pump 18 to suck air, coating powder falling off from the thermal paper 6 enters the suction head 15 along with air and enters the filter box 17 through the air suction pipe 16, the coating powder is intercepted by the activated carbon filter screen 20, the air passes through the activated carbon filter screen 20 and flows out from the air outlet pipe 22 by bypassing the partition plate 19, the air outlet pipe 22 can cool the just printed receipt to accelerate the coating on the receipt to solidify, the PLC controls the electromagnet 13 to be electrified to enable the iron ring 11 to move downwards to abut against the electromagnet 13, the iron ring 11 drives the cutting blade 9 to move downwards through the hinge rod 10, the cutting blade 9 interacts with the fixed blade 8 to cut the receipt, then the PLC stops energizing the electromagnet 13, and since the spring is in a stretched state, the elastic force of the spring will drive the iron ring 11 to move upward, thereby resetting the cutting blade 9.

Compared with the prior art, this POS machine with cut and purification performance, cut thermal paper 6 through cutting the mechanism, make the document incision more level and more smooth, compare with current mechanism of cutting, should cut the mechanism and reduced the trouble for the user, prevent that manual pulling thermal paper 6 and cause the waste of thermal paper 6, moreover, adsorb the coating powder that drops after the thermal paper 6 reaction through purifying the mechanism, prevent to cause wearing and tearing to the heat-sensitive element in the printer 5, compare with current purification mechanism, this purification mechanism design benefit, and can realize the dismantlement and the fixing of active carbon filter screen 20, the practicality has been improved.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.