CN217197476U

CN217197476U - Card paper trigger mechanism and printer

Info

Publication number: CN217197476U
Application number: CN202123161207.1U
Authority: CN
Inventors: 不公告发明人
Original assignee: Xiamen Hanyin Electronic Technology Co Ltd
Current assignee: Xiamen Hanyin Electronic Technology Co Ltd
Priority date: 2021-12-15
Filing date: 2021-12-15
Publication date: 2022-08-16
Anticipated expiration: 2031-12-15

Abstract

The utility model discloses a card paper trigger mechanism and a printer, wherein the card paper trigger mechanism comprises a middle part and a trigger part, is arranged on a printer main body and is electrically connected with a second signal providing circuit; the trigger part comprises a movable part positioned in the paper feeding channel; the movable portion is configured to be pushed by the paper and contact the intermediate member when the paper is jammed in the paper feeding path, so as to turn on the first signal providing circuit and the second signal providing circuit to change the first signal into the second signal. The paper jam triggering mechanism has the advantages of simple structure and principle, novel conception, few elements and low cost. And, need not special design space and install and support photoelectricity pair and jam detection board, also need not to design the electric wire and make photoelectricity pair and circuit board be connected, it is lower to the requirement of putting of spatial position.

Description

Card paper trigger mechanism and printer

Technical Field

The utility model relates to a card paper trigger mechanism and printer.

Background

The printer that uses commonly at present is mainly by printing the stock form and leading to paper exit department from printing the stock form around the paper roll, and when printing the in-process, go out paper not in the same direction as or during the card paper, cause the paper stifled in paper exit department, the printer still continues the work, can't stop by oneself, extravagant paper, damages the printer even.

Or, for example, the Chinese utility model patent with application number 201921966613.5 and the patent name of thermal printer with the function of detecting paper jam, the paper jam detection device comprises a base, a paper cover and a panel, wherein a paper outlet is arranged between the base and the panel, a fixed plate is arranged at the bottom of the panel, a paper jam detection plate is arranged at one end, close to the paper outlet, of the panel, the paper jam detection plate is hinged with the panel, a torsion spring is arranged at the top end of the paper jam detection plate, two end parts of the torsion spring are respectively clamped at the bottom of the fixed plate and on the side wall, close to the fixed plate, of the paper jam detection plate, so that the paper jam detecting plate is pressed to the fixing plate when the torsion of the torsion spring is larger than that of the torsion spring, the bottom of the fixing plate is provided with a photoelectric switch, when the paper jam detection plate is pressed to the fixing plate and passes through the photoelectric switch, the photoelectric switch senses the paper jam detection plate and transmits a signal to a control panel of the thermal printer so as to control the thermal printer to stop. This kind of detect printer of stifled paper function needs the special design space to install and support the photoelectricity and detect the board with stifled paper to design the electric wire and make the photoelectricity to be connected with the circuit board, this mode installation is inconvenient, and requires highly to putting of spatial position.

SUMMERY OF THE UTILITY MODEL

The utility model provides a cardboard trigger mechanism and printer, it has overcome the not enough that background art exists. The utility model provides one of the technical scheme that its technical problem adopted is:

a paper clamping trigger mechanism is applied to a printer, the printer comprises a printer main body and a PCB (printed circuit board) configured on the printer main body, and a paper feeding channel is formed in the printer main body; the PCB is provided with a jam detection circuit, and the detection circuit comprises a sensor, a first signal providing circuit for providing a first signal and a second signal providing circuit for providing a second signal;

the jam trigger mechanism includes:

an intermediate member disposed on the printer main body and electrically connected to the second signal supply circuit; and

a trigger member that is disposed on the printer main body and electrically connected to the first signal supply circuit, and that includes a movable portion located in the paper feed path;

the movable portion is configured to be pushed by a sheet of paper and contact the intermediate member when the sheet of paper is jammed in the paper feed path, so as to turn on the first signal supply circuit and the second signal supply circuit to change the first signal into the second signal.

In a preferred embodiment: the first signal is a first level signal, the second signal is a second level signal, and when the trigger part contacts the intermediate part, the first signal providing circuit is communicated with the second signal providing circuit and provides the second level signal for the sensor.

In a preferred embodiment: the first level signal is a high level signal, and the second signal is a low level signal.

In a preferred embodiment: the middle part is a structural part made of metal materials.

In a preferred embodiment: the first signal providing circuit provides a first voltage to the sensor when the triggering part does not contact the intermediate part; the second signal providing circuit provides a second voltage signal to the sensor when the triggering member contacts the intermediate member.

In a preferred embodiment: the printer further comprises a printing head and a pressing roller, wherein the pressing roller conveys printing paper clamped between the printing head and the pressing roller in a rotating mode.

In a preferred embodiment: the printer further comprises a paper cutting mechanism, the paper cutting mechanism is arranged on the downstream side of the printing head, and the movable part is arranged between the printing head and the paper cutting mechanism.

In a preferred embodiment: the printer further comprises a force application component, the printing head can be supported on the printer main body in a swinging mode, the force application component is arranged between the printing head and the printer main body and applies force to the printing head in the direction of the pressing roller, and the middle component comprises a metal limiting rod which is supported on the printer main body and used for limiting the swinging amplitude of the printing head.

In a preferred embodiment: the printer main part comprises a metal frame, and the metal limiting rod is electrically connected with the detection circuit on the PCB through the metal frame.

The second technical scheme of the utility model for solving the technical problem adopts:

a printer comprises the paper jam triggering mechanism.

Compared with the background technology, the technical scheme has the following advantages:

1. the movable part is configured to be capable of being pushed by paper and contacting the intermediate part when paper is jammed in the paper feeding channel so as to conduct the first signal providing circuit and the second signal providing circuit to enable the first signal to be changed into the second signal, at the moment, the PCB judges that the paper jam occurs and carries out subsequent actions after obtaining the paper jam signal, and the structure and the principle are simple, the conception is novel, the number of elements is few, and the cost is low. And, need not special design space and install and support photoelectricity pair and paper jam and detect the board, also need not to design the electric wire and make photoelectricity pair be connected with the circuit board, it is lower to the requirement of putting of spatial position.

2. The first signal and the second signal can be level signals, are easy to obtain in a PCB, do not need additional signal transmitting and receiving elements and simplify the circuit structure.

3. The first signal and the second signal can be voltage signals, are easy to obtain in a PCB, do not need additional signal transmitting and receiving elements, and simplify the circuit structure.

4. Because the paper cutting mechanism is arranged at the downstream side of the printing head, and the movable part is arranged between the printing head and the paper cutting mechanism, the distance between the folded paper and the movable part is relatively short when a paper jam occurs, the paper can be pushed to the movable part for moving only by moving a relatively short distance, and the accuracy is higher.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 illustrates a cross-sectional view of the movable portion separated from the intermediate member in one embodiment.

Fig. 2 shows a schematic cross-sectional view of an embodiment where the movable part is in contact with the intermediate part.

Fig. 3 is a partially enlarged schematic view of fig. 1.

Fig. 4 is a partially enlarged schematic view of fig. 2.

Fig. 5 depicts an assembly of the electrical isolator, the movable portion and the intermediate member in one embodiment.

Fig. 6 is a schematic circuit diagram of a jam detection circuit according to an embodiment.

Fig. 7 is a schematic circuit diagram of a jam detection circuit according to another embodiment.

Detailed Description

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, unless otherwise expressly limited, to the extent that directional terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise" and the like are used, the positional or orientational relationships illustrated in the drawings are based on the positional and orientational relationships illustrated in the drawings and are merely for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element so referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the present invention in any way.

In the claims, the description and the drawings of the present application, unless otherwise expressly limited, the terms "fixedly connected" and "fixedly connected" should be understood in a broad sense, i.e., any connection without displacement relationship or relative rotation relationship between the two, i.e., including non-detachable fixed connection, integrated connection and fixed connection by other devices or elements.

In the claims, the specification and drawings of the present invention, the terms "including", "having" and their variants, if used, are intended to be inclusive and not limiting.

Referring to fig. 1 to 6, a preferred embodiment of a paper jam trigger mechanism is shown, which is applied to a printer.

The printer comprises a printer body 10 and a PCB 80 configured on the printer body 10, wherein the printer body 10 is formed with a paper feeding channel 1.

The printer further includes a printing head 90 and a platen roller 91, and the platen roller 91 transports printing paper sandwiched between the printing head 90 and the platen roller 91 by rotating. The printer further includes a paper cutting mechanism 92, and the paper cutting mechanism 92 is disposed on the downstream side of the print head 90, that is, near the exit of the paper path 1.

In this embodiment, the printer main body 10 includes a housing 12 and a metal frame 13, and the metal frame 13 is fixed in the housing 12. The print head 90, the platen roller 91, the PCB 80, and the paper cutting mechanism 92 are mounted on the metal frame 13. The PCB 80 is fixed to the metal frame 13 by screws, and the screws communicate with a ground circuit disposed on the PCB 80.

In this embodiment, the printer further includes a biasing member, the print head 90 is swingably supported on the printer main body 10, and the biasing member is disposed between the print head 90 and the printer main body 10 and biases the print head 90 in the direction of the platen roller 91. Specifically, as shown in fig. 5, the urging member is a spring 93.

The PCB board 80 has a jam detection circuit including a sensor 50, a first signal supply circuit 51 supplying a first signal, and a second signal supply circuit 52 supplying a second signal.

The jam triggering mechanism comprises an intermediate member and a triggering member 20.

The intermediate member is disposed on the printer main body 10 and electrically connected to the second signal supply circuit 52.

The trigger member 20 is disposed on the printer body 10 and electrically connected to the first signal supply circuit 51, and includes a movable portion located in the paper feed path 1; the movable portion is configured to be pushed by a sheet and contact the intermediate member when a sheet is jammed in the sheet feeding path 1 to turn on the first signal supply circuit 51 and the second signal supply circuit 52 to change the first signal into the second signal.

In this embodiment, the first signal is a first level signal, the second signal is a second level signal, and when the triggering component contacts the intermediate component, the first signal providing circuit is communicated with the second signal providing circuit and provides the second level signal for the sensor. Specifically, as shown in fig. 6, the first level signal is a high level signal, and the second level signal is a low level signal, that is, a ground signal.

In this embodiment, the intermediate member is a structural member made of a metal material. Specifically, as shown in fig. 5, the intermediate member includes a metal stopper 30 supported on the printer body 10 to limit the swing range of the print head 90. That is, metal gag lever post 30 is the limit structure of printer itself, utilizes the structure of the current structure of printer as the intermediate member, need not newly increase the part, ensures that the printer size can not additionally increase. And, the metal limiting rod 30 is electrically connected to the jam detecting circuit on the PCB 80 through the metal frame 13.

In this embodiment, as shown in fig. 3, the triggering component 20 is a conductive elastic sheet, the conductive elastic sheet includes a straight section 21 and a bent section 22, the straight section 21 is connected to the PCB main board 80, the bent section 22 is the movable portion, and a guide inclined plane 23 is disposed at an outlet of the bent section 22 facing the printing channel 1. The bending section 22 surrounds the periphery of the metal limiting rod 30.

In this embodiment, the printer main body 10 is further provided with an electrical isolation member 11 and a metal connecting member (not shown in the figure), and the triggering member is supported on the printer main body 10 through the electrical isolation member 11 and is electrically connected to the jam detecting circuit through the metal connecting member; the metal connecting piece comprises a lead, a flexible circuit board or a first metal structural piece which is not in contact with the printer main body. In this embodiment, the electrical isolation member 11 is an insulating plate to isolate the conductive elastic sheet 20 from the metal frame 13.

Therefore, as shown in fig. 3, when the paper feeding channel 1 is not jammed, the bending section 22 of the conductive elastic sheet 20 is not in contact with the metal limiting rod 30, and at this time, the jam detection circuit is in an open state, and the sensor 50 always receives the first signal of the jam and does not receive the second signal of the jam;

as shown in fig. 4, when a paper jam occurs in the paper feeding channel 1, the paper will abut against the bending section 22 of the conductive elastic sheet 20 and continue to abut against the bending section 22 along the guiding inclined plane 23 until the bending section 22 contacts the metal limiting rod 30, and at this time, the first signal providing circuit 51 is communicated with the second signal providing circuit 52 and switches the first signal into a second signal to be provided to the sensor 50, that is, the second signal is a signal of the jam detection circuit and is also a ground signal.

Alternatively, in another preferred embodiment of the paper jam triggering mechanism, in this embodiment, as shown in fig. 7, the first signal providing circuit 51 provides a first voltage for the sensor 50, and the second signal providing circuit 52 provides a second voltage signal for the sensor 50.

When the movable portion 24 of the trigger member 20 does not contact the intermediate member, the first signal providing circuit 51 provides a first voltage to the sensor 50, and the second signal providing circuit 52 is disconnected from the sensor 50; when the movable portion 24 of the trigger member 20 contacts the intermediate member, the second signal providing circuit 52 provides a second voltage signal to the sensor 50, and the first signal providing circuit 51 is disconnected from the sensor 50.

A printer comprises the paper jam triggering mechanism.

The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.

Claims

1. A paper jamming triggering mechanism is applied to a printer, the printer comprises a printer main body and a PCB (printed circuit board) configured on the printer main body, and a paper feeding channel is formed in the printer main body; the method is characterized in that: the PCB is provided with a paper jam detecting circuit, and the detecting circuit comprises a sensor, a first signal providing circuit for providing a first signal and a second signal providing circuit for providing a second signal;

the jam triggering mechanism includes:

the movable portion is configured to be pushed by a sheet and contact the intermediate member when the sheet is jammed in the sheet feeding path, so as to turn on the first signal providing circuit and the second signal providing circuit to change the first signal into the second signal.

2. A jam trigger mechanism as claimed in claim 1, wherein: the first signal is a first level signal, the second signal is a second level signal, and when the trigger part contacts the intermediate part, the first signal providing circuit is communicated with the second signal providing circuit and provides the second level signal for the sensor.

3. A jam trigger mechanism as claimed in claim 2, wherein: the first level signal is a high level signal, and the second level signal is a low level signal.

4. A jam trigger mechanism as claimed in claim 2, wherein: the middle part is a structural part made of metal materials.

5. A jam trigger mechanism as claimed in claim 1, wherein: the first signal providing circuit provides a first voltage to the sensor when the triggering part does not contact the intermediate part; the second signal providing circuit provides a second voltage signal to the sensor when the trigger member contacts the intermediate member.

6. A jam trigger mechanism as claimed in claim 1, wherein: the printer further comprises a printing head and a pressing roller, wherein the pressing roller conveys printing paper clamped between the printing head and the pressing roller in a rotating mode.

7. The jam trigger mechanism of claim 6, wherein: the printer further comprises a paper cutting mechanism, the paper cutting mechanism is arranged on the downstream side of the printing head, and the movable part is arranged between the printing head and the paper cutting mechanism.

8. The jam trigger mechanism of claim 6, wherein: the printer still includes application of force part, it supports to beat printer head swingably on the printer main part, application of force part configuration is in beat between printer head and the printer main part and to the printer head to the direction application of force of compression roller, the intermediate part is including supporting be used for restricting on the printer main part beat the metal gag lever post of printer head swing amplitude.

9. A jam trigger mechanism as claimed in claim 8, wherein: the printer main part includes metal frame, the metal gag lever post passes through metal frame with the detection circuit electricity on the PCB board is connected.

10. A printer, characterized by: comprising a jam-triggering mechanism according to any one of claims 1-9.