Charging mechanism and touch-controlled electronic device

Abstract

The present invention relates to the technical field of electronic products, and discloses a charging mechanism and a touch-controlled electronic device. The charging mechanism comprises a detection spring, a first charging spring, a second charging spring and a connecting terminal, wherein: the detection spring is connected to the detection terminal of the connecting terminal through a first cable, and is used to detect whether the target device is located at the target position; the first charging spring is connected to the ground terminal of the connecting terminal through a second cable; the second charging spring is connected to the power terminal of the connecting terminal through a third cable; if the target device is located at the target position, the gold finger of the target device contacts the first charging spring and the second charging spring, and the first charging spring and / or the second charging spring contacts the detection spring; otherwise, a preset gap greater than zero is maintained between the first charging spring, the second charging spring and the detection spring. The charging mechanism is conducive to reducing product costs and improving charging reliability.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic products, and in particular to a charging mechanism and a touch-controlled electronic device provided with the charging mechanism. Background Art

[0002] There are two kinds of touch solutions at present, namely capacitive pen and stylus. Capacitive pen is made by using the conductive property of pen and screen. It is a physical principle. The tip of capacitive pen has static electricity. Capacitive screen itself has the technical characteristics of inducing static electricity. Therefore, capacitive pen is suitable for capacitive screen. It is also the solution adopted by mainstream smart phones and tablets. Stylus is a small pen-shaped tool used to input commands to computer screens, mobile devices, drawing boards and other devices with touch screens. Users can select files or draw by clicking the touch screen with the stylus. It is suitable for resistive screens.

[0003] Due to the various names in the industry, capacitive pens / stylus pens / active pens are essentially contact pens for touch solutions, and are collectively referred to as styluses in this article.

[0004] See also Figure 1 The working principle of the stylus pen is generally as follows: the stylus pen has two gold fingers, namely the positive electrode 101 and the negative electrode 102, which serve as a bridge for the stylus pen to charge with the outside world. When the stylus pen is inserted into the predetermined position in the machine, the gold fingers of the stylus pen contact with the connector spring 103 in the machine, and charging can begin.

[0005] Among them, there are several options for setting up the charging mechanism in the machine:

[0006] (I) Please refer to Figure 2 The charging mechanism used to charge the stylus in the machine includes a 2pin connector 201 (pin), a detection switch 202, a cable 203*2, and a connector charging head 204. When the stylus is inserted into the machine and the detection switch 202 is triggered, the host system will supply power to the 2pin connector 201 only after recognizing that the stylus is inserted, and then transmit the power to the connector charging head 204 through the cable 203. When the connector charging head 204 contacts the positive and negative gold fingers of the stylus, the host system charges the stylus. The reliability of this charging mechanism is average, and it is prone to matching problems. Basically, every electronic device that uses it has abnormalities, and the total price of the solution is medium to high.

[0007] (ii) Please refer to Figure 3The charging mechanism used to charge the stylus in the machine includes two springs 301, an FPC (flexible circuit board) soft board 302, a steel sheet, a switch detection, and a ZIF (zero insertion force) connector on the mainboard. When the stylus is inserted into the machine and the detection switch is triggered, the host system will recognize that the stylus is inserted before it supplies power to the ZIF connector on the mainboard, and then transmit the power to the spring 301 through the FPC soft board 302. The spring 301 contacts the positive and negative gold fingers of the stylus, so the host system finally charges the stylus. The overall reliability of the charging mechanism is average, the spring design is the key, and it is easy to have poor life test; the total price of the solution is expensive.

[0008] Therefore, how to reduce the cost while improving the reliability of the stylus charging mechanism is a technical problem that needs to be urgently solved by those skilled in the art. Summary of the invention

[0009] In view of this, an object of the present invention is to provide a charging mechanism and a touch-sensitive electronic device provided with the charging mechanism, through which the charging mechanism can realize charging and detection while reducing costs and having higher charging reliability.

[0010] To achieve the above object, the present invention provides the following technical solutions:

[0011] A charging mechanism comprises a detection spring, a first charging spring, a second charging spring and a connecting terminal, wherein:

[0012] The detection spring is connected to the detection terminal of the connection terminal via a first cable, and is used to detect whether the target device is located at the target position;

[0013] The first charging spring is connected to the ground terminal of the connecting terminal through a second cable;

[0014] The second charging spring is connected to the power terminal of the connecting terminal through a third cable;

[0015] If the target device is located at the target position, the gold finger of the target device contacts the first charging spring and the second charging spring, and the first charging spring and / or the second charging spring contacts the detection spring; otherwise, a preset gap greater than zero is maintained between the first charging spring, the second charging spring and the detection spring.

[0016] Optionally, in the above charging mechanism, the detection spring is fixedly connected to the first cable by welding;

[0017] The first charging spring is fixedly connected to the second cable by welding;

[0018] The second charging spring is fixedly connected to the third cable by welding.

[0019] Optionally, in the above charging mechanism, a first heat shrink tube is provided on the outer jacket of the welding position between the detection spring and the first cable;

[0020] A second heat shrink tube is disposed on the outer cover of the welding position between the first charging spring and the second cable;

[0021] A third heat shrink tube is disposed on the outer sleeve of the welding position between the second charging spring and the third cable.

[0022] Optionally, in the above charging mechanism, the first charging spring sheet and the second charging spring sheet are both metal spring sheets with a bent structure, and each of the metal spring sheets includes a charging connection section, a charging bending section, and a charging trigger section connected in sequence, wherein:

[0023] An end of the charging connection section away from the charging bending section is used to connect the second cable or the third cable;

[0024] The charging triggering section is located above the charging connecting section;

[0025] The detection spring is located between the charging connection section and the charging trigger section.

[0026] Optionally, in the above-mentioned charging mechanism, the detection spring is a strip-shaped plate structure.

[0027] Optionally, in the above charging mechanism, the detection spring comprises a detection connection portion and a detection trigger portion, wherein:

[0028] The detection connection portion is connected to the first cable;

[0029] The detection triggering portion is an elastic strip structure, one end of the elastic strip structure is fixedly connected to the detection connecting portion, and the other end is closer to the charging triggering section than the detection connecting portion.

[0030] Optionally, in the above charging mechanism, the first charging spring and / or the second charging spring is a first metal spring with a bent structure, and the first metal spring comprises a charging connection section, a charging bending section, and a charging trigger section connected in sequence, wherein: an end of the charging connection section away from the charging bending section is used to connect the second cable or the third cable, and the charging connection section is provided with a through hole; and the charging trigger section is located above the through hole;

[0031] The detection spring is a second metal spring with a bent structure, and the second metal spring includes a detection connection section, a detection bending section, and a detection trigger section connected in sequence, wherein: one end of the detection connection section away from the detection bending section is connected to the first cable; one end of the detection trigger section away from the detection bending section passes through the through hole to approach the charging trigger section.

[0032] Optionally, in the above-mentioned charging mechanism, only one detection shrapnel is provided in the charging mechanism.

[0033] Optionally, in the above-mentioned charging mechanism, two detection springs are provided in the charging mechanism, and the two detection springs are respectively a first detection spring and a second detection spring. When the gold finger of the target device contacts the first charging spring and the second charging spring, the first charging spring and the second charging spring contact the first detection spring and the second detection spring respectively.

[0034] A touch electronic device comprises a host and a stylus, wherein the host is provided with a target position for installing the stylus and a charging mechanism for charging the stylus, and the charging mechanism is the charging mechanism described above.

[0035] It can be seen from the above technical solution that the charging mechanism provided by the present invention is a charging mechanism with a detection switch and a charging function. The charging mechanism has at least the following advantages:

[0036] a) In the charging mechanism, the conventional detection switch is eliminated, and the detection of the target device is achieved through the detection spring 3, which is conducive to reducing product costs;

[0037] b) In the charging mechanism, since the detection spring 3 and the charging spring are integrated together, the space occupied in the host system is small and the assembly is convenient;

[0038] c) Both the detection spring 3 and the charging spring are opened and closed by the gold finger of the target device, so the switch action is consistent and the reliability is high;

[0039] d) Both the detection shrapnel 2 and the charging shrapnel are elastic structures, which can greatly increase the number of uses and achieve a lifespan of 20,000 times.

[0040] The touch-controlled electronic device provided by the present invention also has the above-mentioned beneficial effects due to the adoption of the above-mentioned charging mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1 It is a schematic diagram of the structure when the gold finger of the stylus pen contacts the charging shrapnel;

[0043] Figure 2 and Figure 3 Schematic diagrams of the structures of two different stylus charging mechanisms;

[0044] Figure 4 A schematic diagram of the overall structure of a charging mechanism provided in a first specific embodiment of the present invention;

[0045] Figure 5 for Figure 4 A local enlarged view of the rectangular dotted area in FIG.

[0046] Figure 6 A schematic diagram of the structure of the charging mechanism provided in the first specific embodiment of the present invention when charging a stylus pen;

[0047] Figure 7 and Figure 8 All of them are schematic diagrams of the arrangement structure of the spring pieces in the charging mechanism provided in the first specific embodiment of the present invention;

[0048] Figure 9 A schematic diagram of the installation structure of a heat shrink tube in a charging mechanism provided in a first specific embodiment of the present invention;

[0049] Figure 10 and Figure 11 All of them are schematic diagrams of the arrangement structure of the springs in the charging mechanism provided in the second specific embodiment of the present invention;

[0050] Figure 12 A schematic diagram of the installation structure of a heat shrink tube in a charging mechanism provided in a second specific embodiment of the present invention;

[0051] Figure 13 A schematic diagram of the arrangement structure of the springs in the charging mechanism provided in the third specific embodiment of the present invention;

[0052] Figure 14 A schematic diagram of the structure of a charging mechanism provided in a sixth specific embodiment of the present invention when a spring piece is nested in a plastic body;

[0053] Figure 15 A schematic diagram of the spring arrangement structure in a charging mechanism provided in a sixth specific embodiment of the present invention. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] First specific embodiment

[0056] See also Figures 4 to 9 The first specific embodiment of the present invention discloses a charging mechanism. The charging mechanism includes a detection spring 3, a first charging spring 1, a second charging spring 2, and a connection terminal 8 (3 pin or 4 pin) for connecting to a host circuit board (such as a host PCB), wherein:

[0057] The detection spring 3 is connected to the detection terminal 401 of the connection terminal 8 via a first cable, and is used to detect whether the target device is located at the target position;

[0058] The first charging spring 1 is connected to the ground terminal 402 of the connection terminal 8 through the second cable;

[0059] The second charging spring 2 is connected to the power terminal 403 of the connecting terminal 8 via a third cable;

[0060] If the target device is located at the target position (for example, the stylus is inserted into the charging slot of the host), the gold finger of the target device contacts the first charging spring 1 and the second charging spring 2, and the first charging spring 1 and / or the second charging spring 2 contacts the detection spring 3 to realize the detection switch function, thereby realizing the charging function;

[0061] If the target device is not located at the target position (for example, the stylus pen is not inserted into the charging slot of the host), the gap distance between the first charging spring 1, the second charging spring 2, and the detection spring 3 is greater than zero, that is, the charging spring and the detection spring remain disconnected, also called the normally open state.

[0062] It is easy to know that in the charging mechanism, the first cable connected to the detection spring 3 is used to transmit signals, and the second cable and the third cable connected to the first charging spring 1 and the second charging spring 2 are used to transmit power. Moreover, it should be noted that the first charging spring 1 and the second charging spring 2 are collectively referred to as charging springs, and the detection spring 3, the first charging spring 1, and the second charging spring 2 are collectively referred to as springs.

[0063] Taking the target device as a stylus pen as an example, the working principle of the charging mechanism is as follows:

[0064] When the stylus pen (i.e., the target device) is not inserted into the charging slot (i.e., the target position) of the host, the charging spring and the detection spring remain disconnected;

[0065] When the stylus pen is inserted into the charging slot of the host, the charging spring and the detection spring are in contact and connected, realizing detection triggering, and the host system can recognize that the stylus pen is inserted, and start charging the stylus pen through the second cable, the third cable and the charging spring;

[0066] When the stylus is pulled out, the charging shrapnel and the detection shrapnel are disconnected, and the host system will recognize the change in the electrical signal and determine that the stylus has been pulled out. The host system will then cut off power and no longer supply power. At this time, even if the above-mentioned shrapnel comes into contact with the human body, there will be no safety hazard.

[0067] It can be seen that the first specific embodiment of the present invention provides a charging mechanism with a detection switch and a charging function. The charging mechanism has at least the following advantages:

[0068] a) In the charging mechanism, the conventional detection switch is eliminated, and the detection of the target device is achieved through the detection spring 3, which is conducive to reducing product costs;

[0069] b) In the charging mechanism, since the detection spring 3 and the charging spring are integrated together, the space occupied in the host system is small and the assembly is convenient;

[0070] c) Both the detection spring 3 and the charging spring are opened and closed by the gold finger of the target device, so the switch action is consistent and the reliability is high;

[0071] d) Both the detection shrapnel 2 and the charging shrapnel are elastic structures, which can greatly increase the number of uses and achieve a lifespan of 20,000 times.

[0072] Specifically, the detection spring 3, the first charging spring 1, and the second charging spring 2 are installed in the installation groove of the plastic body 7, and the plastic body 7 is provided with screw holes so as to be fixedly connected with the housing of the electronic device by screw fastening. However, it is not limited to this. In other specific embodiments, the charging mechanism can also be positioned and installed in the main housing by other means, for example, the detection spring 3, the first charging spring 1, and the second charging spring 2 are respectively positioned and inserted directly in the insulating groove of the main housing.

[0073] Specifically, the detection spring 3 is welded and fixedly connected to the first cable; the first charging spring 1 is welded and fixedly connected to the second cable; the second charging spring 2 is welded and fixedly connected to the third cable. Figure 8 The "solder point" in the

[0074] Furthermore, the welding position between the detection spring 3 and the first cable is covered with a first heat shrink tube 4, the welding position between the first charging spring 1 and the second cable is covered with a second heat shrink tube 5, and the welding position between the second charging spring 2 and the third cable is covered with a third heat shrink tube 6. Thus, through the above-mentioned welding point and heat shrink tube structure, a reliable connection between each spring and the corresponding cable can be ensured.

[0075] Specifically, see Figure Figures 7 to 9 , only one detection spring 3 is provided in the charging mechanism. Moreover, the first charging spring 1 and the second charging spring 2 are both metal springs with a bent structure, and each metal spring comprises a charging connection section 11, a charging bending section 12, and a charging trigger section 13 connected in sequence. Among them: the end of the charging connection section 11 away from the charging bending section 12 is used to connect the second cable or the third cable; the charging trigger section 13 is located above the charging connection section 11; the detection spring 3 is a strip plate structure, and is located between the charging connection section 11 and the charging trigger section 13.

[0076] In specific implementation, the detection spring 3 can be arranged close to the first charging spring 1, and when the gold finger of the target device contacts the first charging spring 1 and the second charging spring 2, the first charging spring 1 contacts the detection spring 3. Alternatively, in other specific embodiments, the detection spring 3 can also be arranged close to the second charging spring 2, and when the gold finger of the target device contacts the first charging spring 1 and the second charging spring 2, the second charging spring 2 contacts the detection spring 3.

[0077] Second specific embodiment

[0078] The second specific embodiment of the present invention provides a charging mechanism, which is different from the first specific embodiment only in that the specific structures of the detection springs used in the two are different.

[0079] Specifically, see Figures 10 to 12 The detection spring 3 in the charging mechanism provided in the second specific embodiment of the present invention comprises a detection connection part 31 and a detection trigger part 32. The detection connection part 31 is connected to the first cable; the detection trigger part 32 is an elastic strip structure, one end of the elastic strip structure is fixedly connected to the detection connection part 31, and the other end is closer to the charging trigger section 13 than the detection connection part 31.

[0080] Specifically, the detection spring piece 3 is first cut on a stamping die to form a spring piece shape, and then bent to form the spring piece.

[0081] Third specific embodiment

[0082] The third specific embodiment of the present invention provides a charging mechanism, which is different from the first specific embodiment only in that the specific structures of the detection springs used in the two are different.

[0083] Specifically, see Figure 13 :

[0084] The first charging spring 1 and / or the second charging spring 2 are first metal springs with a bent structure, and the first metal spring comprises a charging connection section 11, a charging bending section 12, and a charging trigger section 13 connected in sequence, wherein: an end of the charging connection section 11 away from the charging bending section 12 is used to connect the second cable or the third cable, and the charging connection section 11 is provided with a through hole 14; the charging trigger section 13 is located above the through hole 14;

[0085] The detection spring 3 is a second metal spring with a bent structure, and the second metal spring includes a detection connection section 33, a detection bending section 34, and a detection trigger section 35 connected in sequence, wherein: one end of the detection connection section 33 away from the detection bending section 34 is connected to the first cable; one end of the detection trigger section 35 away from the detection bending section 34 passes through the through hole 14 to approach the charging trigger section 13.

[0086] Specifically, the detection spring piece 3 is formed by directly bending on a stamping die.

[0087] Fourth specific embodiment

[0088] A fourth specific embodiment of the present invention provides a charging mechanism, which is different from the first specific embodiment only in that two detection springs are provided in the charging mechanism.

[0089] Specifically, see Figure 13 and Figure 14 The two detection springs 3 are respectively the first detection spring and the second detection spring. When the gold finger of the target device contacts the first charging spring 1 and the second charging spring 2, the first charging spring 1 and the second charging spring 2 contact the first detection spring and the second detection spring respectively.

[0090] Fifth specific embodiment

[0091] The fifth specific embodiment of the present invention provides a charging mechanism, which is different from the fourth specific embodiment only in that two detection springs are provided in the charging mechanism, and the structure of each detection spring is the same as the structure of the detection spring 3 in the second specific embodiment.

[0092] Sixth specific embodiment

[0093] The sixth specific embodiment of the present invention provides a charging mechanism, which is different from the fourth specific embodiment in that two detection springs are provided in the charging mechanism, and the structure of each detection spring is the same as the structure of the detection spring 3 in the third specific embodiment. Figures 14 to 15 .

[0094] In summary, a specific embodiment of the present invention further provides a touch-controlled electronic device, which includes a host and a stylus. The host is provided with a target position for installing the stylus and a charging mechanism for charging the stylus. The charging mechanism is the charging mechanism provided in any of the above specific embodiments.

[0095] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0096] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0097] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A charging mechanism, It is characterized in that It comprises a detection spring (3), a first charging spring (1), a second charging spring (2) and a connecting terminal (8), wherein: The detection spring (3) is connected to the detection terminal (401) of the connection terminal (8) via a first cable, and is used to detect whether the target device is located at a target position; The first charging spring (1) is connected to the ground terminal (402) of the connecting terminal (8) via a second cable; The second charging spring (2) is connected to the power terminal (403) of the connecting terminal (8) via a third cable; If the target device is located at the target position, the gold finger of the target device contacts the first charging spring (1) and the second charging spring (2), and the first charging spring (1) and / or the second charging spring (2) contacts the detection spring (3); otherwise, a preset gap greater than zero is maintained between the first charging spring (1), the second charging spring (2) and the detection spring (3); The first charging spring sheet (1) and / or the second charging spring sheet (2) is a first metal spring sheet with a bent structure, the first metal spring sheet comprises a charging connection section (11), a charging bending section (12), and a charging trigger section (13) which are connected in sequence, wherein: an end of the charging connection section (11) away from the charging bending section (12) is used to connect the second cable or the third cable, and the charging connection section (11) is provided with a through hole (14); the charging trigger section (13) is located above the through hole (14); The detection spring (3) is a second metal spring with a bent structure, and the second metal spring comprises a detection connection section (33), a detection bending section (34), and a detection trigger section (35) connected in sequence, wherein: an end of the detection connection section (33) away from the detection bending section (34) is connected to the first cable; and an end of the detection trigger section (35) away from the detection bending section (34) passes through the through hole (14) to approach the charging trigger section (13).

2. The charging mechanism according to claim 1, It is characterized in that The detection spring (3) is fixedly connected to the first cable by welding; The first charging spring (1) is fixedly connected to the second cable by welding; The second charging spring (2) is fixedly connected to the third cable by welding.

3. The charging mechanism according to claim 2, It is characterized in that A first heat shrink tube (4) is provided on the outer cover of the welding position between the detection spring piece (3) and the first cable; A second heat shrink tube (5) is provided on the outer cover of the welding position between the first charging spring sheet (1) and the second cable; A third heat shrink tube (6) is provided on the outer sleeve of the welding position between the second charging spring sheet (2) and the third cable.

4. The charging mechanism according to claim 1, It is characterized in that Only one detection spring (3) is provided in the charging mechanism.

5. The charging mechanism according to claim 1, It is characterized in that The charging mechanism is provided with two detection springs (3), which are respectively a first detection spring and a second detection spring. When the gold finger of the target device contacts the first charging spring (1) and the second charging spring (2), the first charging spring (1) and the second charging spring (2) contact the first detection spring and the second detection spring respectively.

6. A touch electronic device, comprising a host and a stylus, wherein the host is provided with a target position for installing the stylus and a charging mechanism for charging the stylus, It is characterized in that The charging mechanism is the charging mechanism as described in any one of claims 1 to 5.

Images