CN109884712B - Contact type detection device - Google Patents
Contact type detection device Download PDFInfo
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- CN109884712B CN109884712B CN201910216296.3A CN201910216296A CN109884712B CN 109884712 B CN109884712 B CN 109884712B CN 201910216296 A CN201910216296 A CN 201910216296A CN 109884712 B CN109884712 B CN 109884712B
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Abstract
The invention discloses a contact type detection device which is used for detecting whether an insulation protection film covers a crimping area of a touch screen or not, wherein the crimping area of the touch screen is provided with a plurality of pins, the contact type detection device comprises a rack, a driving device, a circuit board and a conduction test piece, the driving device is installed on the rack, and the circuit board is connected with the driving device; the circuit board comprises a substrate, and a first conductive wire and a second conductive wire which are arranged on the substrate, the first conductive wire and the second conductive wire are arranged at intervals, the first conductive wire and the second conductive wire are both connected with the conduction test piece, and the driving device is used for driving the circuit board to move towards the touch screen so that the first conductive wire and the second conductive wire are both in contact with the pins. The contact type detection device has the advantages of low misjudgment rate and strong universality.
Description
Technical Field
The invention relates to the technical field of touch screens, in particular to a contact type detection device.
Background
In the touch screen industry, the birth of a touch screen needs to go through a plurality of process procedures, and each process procedure has a corresponding processing and detecting process. During processing and detection, the touch screen can be damaged, so that different types of insulation protection films are required to be attached to each process to protect the touch screen body and the conductive circuit, and in the detection process, particularly during false pressure test, the insulation protection films covering the pins of the crimping area of the touch screen are required to be removed firstly, so that the crimping area of the touch screen can be tested. At present, the judging method for detecting whether an insulation protection film exists on a pin of a crimping area of a touch screen mainly comprises the following two steps:
and non-contact detection, namely detecting the crimping area of the touch screen by using a distance sensor or a laser fiber and the like, and judging whether an insulation protection film exists on a pin of the crimping area of the touch screen by using a correlation or reflection method. However, in this detection method, when the pitch of the pins in the pressure contact area of the touch screen is relatively close, the reflection area of the optical fiber easily irradiates on the pins, which causes erroneous judgment, and even when a high-precision distance sensor is used, the reflection area is easily measured on the pins, which causes erroneous judgment, and the erroneous judgment rate is high, and this detection method has a very high requirement for the precision of the detection device.
Contact detection, using the probe to contact the pin, has a very high requirement on the position of the tested touch screen, and the probe must contact the pin of the corresponding pressure welding area of the touch screen to realize the detection effect. The probability of contact between the probe and the pin in the detection mode is low, and the problems of high misjudgment rate and poor universality exist.
Disclosure of Invention
The invention mainly aims to provide a contact type detection device, and aims to solve the technical problems of high misjudgment rate and poor universality in a judgment mode of whether an insulating protection film covers a pin in a crimping area of a touch screen in the prior art.
In order to achieve the above object, the invention provides a contact detection device for detecting whether a crimping area of a touch screen is covered with an insulating protection film, wherein the crimping area of the touch screen is provided with a plurality of pins, the contact detection device comprises a rack, a driving device, a circuit board and a conduction test piece, the driving device is mounted on the rack, and the circuit board is connected with the driving device; the circuit board comprises a substrate, and a first conductive wire and a second conductive wire which are arranged on the substrate, the first conductive wire and the second conductive wire are arranged at intervals, the first conductive wire or the second conductive wire is connected with the conduction test piece, and the driving device is used for driving the circuit board to move towards the direction of the touch screen, so that the first conductive wire and the second conductive wire are both contacted with the pins.
Preferably, the first conductive wires and the second conductive wires are both a plurality of, the first conductive wires are arranged at intervals, and the second conductive wires are arranged at intervals; the driving device is used for driving the circuit board to move towards the touch screen, so that at least one first conductive wire and at least one second conductive wire are both in contact with the pins.
Preferably, one of the second conductive lines is disposed between any two adjacent first conductive lines, and one of the first conductive lines is disposed between any two adjacent second conductive lines.
Preferably, the first conductive lines extend along a first direction, and a plurality of the first conductive lines are arranged at intervals along a second direction; the second conductive lines extend along a first direction, and a plurality of the second conductive lines are arranged at intervals along a second direction; the first direction is perpendicular to the second direction.
Preferably, the circuit board further includes two connecting conductive wires arranged along the second direction, a connection end of each first conductive wire is connected to one of the connecting conductive wires, a connection end of each second conductive wire is connected to the other connecting conductive wire, and the connecting conductive wire is connected to the conduction test piece.
Preferably, the first conductive lines are uniformly spaced along the second direction, and the second conductive lines are uniformly spaced along the second direction.
Preferably, the interval between each of the first conductive lines and one of the second conductive lines adjacent thereto is the same.
Preferably, the first conductive line and the second conductive line both protrude from the substrate.
Preferably, the driving device comprises a driving cylinder and a mounting plate, the driving cylinder is mounted on the rack, the circuit board is connected with the mounting plate, and the mounting plate is connected with an output shaft of the driving cylinder.
Preferably, an elastic buffer member is arranged between the mounting plate and the circuit board, one end of the elastic buffer member is connected with the mounting plate, and the other end of the elastic buffer member is connected with the circuit board.
In the technical scheme of the invention, when the contact type detection device is used, when the touch screen of the object to be detected moves above the circuit board, the driving device starts to work to drive the circuit board to move upwards, so that the first conductive wire and the second conductive wire of the circuit board are both contacted with the pins of the touch screen. The pins of the touch screen are conductive, the insulating protective film is insulating, the first conductive wire and the second conductive wire are both connected with the conduction test piece, at the moment, if the conduction test piece detects that the first conductive wire and the second conductive wire are conducted, it is judged that the pins are not covered with the insulating protective film, and if the conduction test piece detects that the first conductive wire and the second conductive wire are not conducted, it is proved that the pins are covered with the insulating protective film. Compared with the existing method for judging whether the pins of the crimping area of the touch screen are covered with the insulation protection films, the contact type detection device provided by the invention detects whether the pins are covered with the insulation protection films by contacting the first conductive wire and the second conductive wire on the circuit board with the pins, so that the contact probability is increased, the detection accuracy is greatly improved, and the misjudgment rate is low. In addition, the touch detection device can detect the touch screens with different sizes by simply replacing the circuit board, and has strong universality. The contact type detection device also has the advantages of simple structure and low production cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of a contact detection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a circuit board of a contact detection device according to an embodiment of the invention;
FIG. 3 is a schematic perspective view illustrating a touch detection device contacting a touch screen according to an embodiment of the invention;
fig. 4 is a schematic plan view of a layout of a touch detection device when the touch detection device contacts a touch screen according to an embodiment of the invention (the filling portion is only used for distinguishing the first conductive lines and the second conductive lines from other areas of the circuit board).
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The description of the orientations of "up", "down", "left", "right", "front", "back", etc. in the present invention, with reference to the orientations shown in fig. 1 and 2, is merely for explaining the relative positional relationship between the respective components in the postures shown in fig. 1 and 2, and if the specific posture is changed, the directional indication is changed accordingly.
The invention provides a contact type detection device.
As shown in fig. 1 to 4, in an embodiment of the invention, a contact detecting apparatus 100 is used for detecting whether a crimping area 201 of a touch screen 200 is covered with an insulating protective film, the crimping area 201 of the touch screen 200 is provided with a plurality of pins 202, the contact detecting apparatus 100 includes a frame 1, a driving apparatus 2, a circuit board 3 and a conduction test piece (not shown), the driving apparatus 2 is mounted on the frame 1, and the circuit board 3 is connected with the driving apparatus 2. The circuit board 3 includes a substrate 34 and a first conductive line 31 and a second conductive line 32 disposed on the substrate 34, the first conductive line 31 and the second conductive line 32 are disposed at intervals, that is, the first conductive line 31 and the second conductive line 32 are not in contact with each other, and both the first conductive line 31 and the second conductive line 32 are connected to the conduction test piece. The driving device 2 is used for driving the circuit board 3 to move towards the touch screen 200, so that the first conductive line 31 and the second conductive line 32 are both in contact with the pins 202. As shown in fig. 3, the touch screen 200 of the present embodiment is located above the circuit board 3, and the driving device 2 is used for driving the circuit board 3 to move upward, so that the first conductive line 31 and the second conductive line 32 are both in contact with the pin 202.
It should be noted that, the circuit board 3 of the present embodiment is matched with the touch screen 200, and according to the actual use situation, the circuit board 3 of the corresponding size is replaced corresponding to the touch screen 200 of different size, and the circuit board 3 and the other area of the touch screen 200 except the crimping area 201 can be prevented from interfering.
When the touch detection device 100 of the present embodiment is used, when the touch screen 200 of the object to be detected moves above the circuit board 3, the driving device 2 starts to operate, and drives the circuit board 3 to move upward, so that the first conductive line 31 and the second conductive line 32 of the circuit board 3 are both in contact with the pin 202 of the touch screen 200. Since the pins 202 of the touch screen 200 have conductivity and the insulating protective film has insulation, and the first conductive lines 31 and the second conductive lines 32 are both connected to the conduction test device, at this time, if the conduction test device detects that the first conductive lines 31 and the second conductive lines 32 are conducted, it is determined that the pins 202 are not covered with the insulating protective film, and if the conduction test device detects that the first conductive lines 31 and the second conductive lines 32 are not conducted, it is verified that the pins 202 are covered with the insulating protective film. Compared with the existing method for judging whether the pins of the touch screen are covered with the insulating protective films, the contact detection device 100 of the embodiment checks whether the pins 202 are covered with the insulating protective films by contacting the first conductive wires 31 and the second conductive wires 32 on the circuit board 3 with the pins 202, so that the contact probability is increased, the detection accuracy is greatly improved, and the misjudgment rate is low. In addition, the touch detection device 100 of the present embodiment can detect touch screens 200 of different sizes by simply replacing the circuit board 3, and is highly versatile. The contact detection device 100 of the present embodiment also has a simple structure and a low production cost.
It can be understood that, in an embodiment, the conduction test piece may adopt a multimeter in the prior art, a red line of the multimeter is connected to the first conductive line 31, a black line of the multimeter is connected to the second conductive line 32, whether the first conductive line 31 and the second conductive line 32 are conducted is determined by reading a resistance value on the multimeter, and then it is determined that the pin 202 is not covered with the insulating protection film. In another embodiment, the conduction test unit may be a bulb, such as an LED lamp, an anode of the LED lamp is connected to the first conductive line 31, a cathode of the LED lamp is connected to the second conductive line, whether the first conductive line 31 and the second conductive line 32 are conducted is determined by whether the LED or the like is turned on, and it is determined that the pin 202 is not covered with the insulating protection film. The conduction test piece of the present invention may adopt a test piece or a test device capable of determining whether the first conductive line 31 and the second conductive line 32 are conducted in the prior art, and the conduction test piece is not limited in this embodiment and may be selectively used according to actual situations.
The first conductive line 31 and the second conductive line 32 in the present embodiment are not limited to the linear conductive structure, and may be in the form of a sheet, a fishbone, a saw-tooth, or any conductive structure.
The first conductive line 31 and the second conductive line 32 of the present embodiment both protrude from the substrate 34. As shown in fig. 2, the first conductive line 31 and the second conductive line 32 both protrude from the upper surface of the substrate 34, so that when the driving device 2 drives the circuit board 3 to move upward, the first conductive line 31 and the second conductive line 32 preferentially contact the pins 202, which can prevent other areas on the circuit board 3 except the first conductive line 31 and the second conductive line 32 from interfering with the detection process, and reduce the false positive rate. The height of the first conductive line 31 and the second conductive line 32 protruding from the substrate 34 in this embodiment can be determined according to practical situations.
The contact detection apparatus 100 of the present embodiment has a plurality of first conductive wires 31 and a plurality of second conductive wires 32, the plurality of first conductive wires 31 are arranged at intervals, and the plurality of second conductive wires 32 are arranged at intervals; the driving device 2 is used for driving the circuit board 3 to move towards the touch screen 200, so that the at least one first conductive wire 31 and the at least one second conductive wire 32 are both in contact with the pins 202. It can be understood that the first conductive lines 31 and the second conductive lines 32 are both multiple, and in the detection process, only at least one first conductive line 31 and at least one second conductive line 32 need to be simultaneously contacted with the pins 202, so that whether the pins 202 of the touch screen 200 are covered by the insulating protection film can be accurately determined, and the misjudgment rate is further reduced.
Specifically, as shown in fig. 2 and 4, one second conductive line 32 is arranged between any two adjacent first conductive lines 31, and one first conductive line 31 is arranged between any two adjacent second conductive lines 32, that is, the first conductive lines 31 and the second conductive lines 32 are arranged to be mutually penetrated, so that the probability that the pins 202 are simultaneously contacted with the first conductive lines 31 and the second conductive lines 32 is improved, and the misjudgment rate is low.
As shown in fig. 1 to 4, in the present embodiment, the first conductive lines 31 extend along a first direction, and the plurality of first conductive lines 31 are arranged at intervals along a second direction; the second conductive lines 32 extend along a first direction, and a plurality of the second conductive lines 32 are arranged at intervals along a second direction; the first direction is perpendicular to the second direction. The first direction of the present embodiment is the left-right direction shown in fig. 1 and 2, and the second direction is the front-rear direction shown in fig. 1 and 2. As shown in fig. 4, in the detection process of the contact detection apparatus 100 of the present embodiment, the first conductive line 31 and the second conductive line 32 are both in vertical contact with the pin 202, and the structural design is simple and reasonable. The first conductive line 31 and the second conductive line 32 of the present embodiment can both adopt copper wires in the prior art, which is easy to obtain, and the extension lengths of the first conductive line 31 and the second conductive line 32 along the first direction are set according to specific practical use conditions.
As shown in fig. 2 and 4, the circuit board 3 further includes two connecting conductive wires 33 arranged along the second direction, the connecting end of each first conductive wire 31 is connected to one of the connecting conductive wires 33, the connecting end of each second conductive wire 32 is connected to the other connecting conductive wire 33, and the connecting conductive wire 33 is connected to the conduction test piece. One of the connecting conductive wires 33 makes the plurality of first conductive wires 31 of the circuit board 3 mutually conducted, and the other connecting conductive wire 33 makes the plurality of second conductive wires 32 of the circuit board 3 mutually conducted, so that the structure is compact. During the detection, the free ends 331 of the two connecting conductive lines 33 are both connected to the conduction test piece, and then whether the first conductive line 31 and the second conductive line 32 are conducted or not is detected through the conduction test piece.
In another embodiment, the free end 331 of any one of the connecting conductive wires 33 can be connected to a power supply with a voltage of 24V, and the free end 331 of the other connecting conductive wire 33 can be used as a receiving end, so that whether the receiving end receives an electrical signal can be detected by a test pencil to determine whether the pin 202 is covered with an insulating protection film. When the first conductive wire 31 and the second conductive wire 32 are both in contact with the pin 202, if the receiving end receives an electrical signal, it is determined that the pin 202 is not covered with the insulating protection film, and if the receiving end does not receive the electrical signal, it is determined that the pin 202 is covered with the insulating protection film.
Further, the plurality of first conductive lines 31 are uniformly spaced along the second direction, and the plurality of second conductive lines 32 are uniformly spaced along the second direction, so that the manufacturing is facilitated. The interval between each first conductive line 31 and one second conductive line 32 adjacent thereto is the same. Between any one first conductive line 31 and the second conductive line 32 adjacent thereto of the present embodimentInterval L1The length of the pin 202 is L2，
The probability that the pins 202 are simultaneously contacted with the first conductive lines 31 and the second conductive lines 32 is increased, and the misjudgment rate is reduced.
In this embodiment, the driving device 2 includes a driving cylinder 21 and a mounting plate 22, the driving cylinder 21 is mounted on the frame 1, the circuit board 3 is connected to the mounting plate 22, and the mounting plate 22 is connected to the output shaft 211 of the driving cylinder 21. The driving cylinder 21 of the present embodiment may employ a conventional technique. When the touch screen 200 of the object to be tested moves above the circuit board 3, the driving cylinder 21 starts to work, and the mounting plate 22 connected with the output shaft 211 of the driving cylinder 21 is driven to move upwards, so that the circuit board 3 is driven to move upwards, and the first conductive wire 31 and the second conductive wire 32 are both in contact with the pins 202.
An elastic buffer (not shown) is disposed between the mounting plate 22 and the circuit board 3 in this embodiment, one end of the elastic buffer is connected to the mounting plate 22, and the other end of the elastic buffer is connected to the circuit board 3. The elastic buffer of the present embodiment may be a spring of the prior art, and the spring is located between the circuit board 3 and the mounting plate 22. When the driving device 2 drives the circuit board 3 to move upwards and the first conductive wire 31 and the second conductive wire 32 are both in contact with the pin 202, the circuit board 3 generates an extrusion force on the touch screen 200, and the spring can play a role in buffering, so that damage to the touch screen 200 due to too large extrusion force can be avoided.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A contact type detection device is used for detecting whether a crimping area of a touch screen is covered with an insulation protection film or not, and the crimping area of the touch screen is provided with a plurality of pins; the circuit board comprises a substrate, and a first conductive wire and a second conductive wire which are arranged on the substrate, the first conductive wire and the second conductive wire are arranged at intervals, the first conductive wire and the second conductive wire are both connected with the conduction test piece, and the driving device is used for driving the circuit board to move towards the direction of the touch screen so as to enable the first conductive wire and the second conductive wire to be both contacted with the pins;
the interval between the first conductive line and the second conductive line adjacent to the first conductive line is L1The length of the pin is L2，
2. The touch sensing device of claim 1, wherein the first conductive wires and the second conductive wires are each a plurality of wires, the first conductive wires are spaced apart, and the second conductive wires are spaced apart; the driving device is used for driving the circuit board to move towards the touch screen, so that at least one first conductive wire and at least one second conductive wire are both in contact with the pins.
3. The touch sensing device of claim 2, wherein one of the second conductive lines is disposed between any two adjacent first conductive lines, and one of the first conductive lines is disposed between any two adjacent second conductive lines.
4. The touch sensing device of claim 3, wherein the first conductive lines extend in a first direction, and a plurality of the first conductive lines are spaced apart in a second direction; the second conductive lines extend along a first direction, and a plurality of the second conductive lines are arranged at intervals along a second direction; the first direction is perpendicular to the second direction.
5. The contact detection device according to claim 4, wherein the circuit board further includes two connection conductive wires arranged along the second direction, a connection end of each of the first conductive wires is connected to one of the connection conductive wires, a connection end of each of the second conductive wires is connected to the other connection conductive wire, and the connection conductive wires are connected to the conduction test piece.
6. The touch sensing device of claim 4, wherein the first conductive lines are uniformly spaced along the second direction, and wherein the second conductive lines are uniformly spaced along the second direction.
7. The touch sensing device of claim 6, wherein each of the first conductive lines is spaced apart from an adjacent one of the second conductive lines by the same distance.
8. The touch sensing device of any of claims 1-7, wherein the first conductive line and the second conductive line both protrude from the substrate.
9. A contact sensing device according to any of claims 1 to 7 wherein the drive means comprises a drive cylinder mounted on the housing and a mounting plate to which the circuit board is connected, the mounting plate being connected to an output shaft of the drive cylinder.
10. The contact sensing device of claim 9, wherein an elastomeric bumper is disposed between the mounting plate and the circuit board, one end of the elastomeric bumper being attached to the mounting plate and the other end of the elastomeric bumper being attached to the circuit board.
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| CN208596208U (en) * | 2018-08-18 | 2019-03-12 | 佛山市顺德区旭丰电子科技有限公司 | A kind of liquid crystal display simple detection device |
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