A wool button flexible cable assembly

Abstract

The embodiment of the present invention discloses a wool button flexible cable assembly, including a flexible cable and a wool button connector configured on the flexible cable; the flexible cable is a rigid-flexible cable, including a flexible board and a steel board connector, the flexible board and the steel board connector are alternately connected; the distribution of the steel board connector corresponds to the distribution of contacts of each device, and the wool button connector is connected and fixed to the steel board connector. The wool button flexible cable assembly provided by the present application realizes electrical connection between various electronic devices and electronic control systems inside an ultra-micro aircraft through the coordinated use of a flexible cable and a wool button connector, and has the advantages of small size, anti-misinsertion, and blind installation.

Description

Technical Field

[0001] The present invention relates to the field of electrical connection of ultra-micro aircraft, and more specifically, to a wool button flexible cable assembly. Background Art

[0002] At present, the diameter of ultra-micro aircraft has been reduced to less than 5cm, with small size, compact structure, light weight and other characteristics. At the same time, the aircraft has a complete power supply system, information processing system, inertial measurement system, flight control system, etc. The electrical interconnection space in ultra-micro aircraft is extremely small, blind installation is required, and the internal space is complex. The existing electrical connection is generally in the form of wire cables or equipment lead welding, which has the following disadvantages:

[0003] a) The connectors used in cables are generally micro-rectangular connectors or nano-rectangular connectors, which are too large to be suitable for ultra-micro aircraft;

[0004] b) The cable length cannot be accurately estimated, so the cable size is generally long, resulting in multiple wires being coiled inside the aircraft, occupying the already tight internal space.

[0005] c) If there are multiple devices connected, the wires are paralleled and coiled inside the device, which may easily lead to short-circuit breakage and cause quality problems.

[0006] d) Wire welding is not easy to assemble in reverse operation. Summary of the invention

[0007] In view of the above problems, the present invention provides a wool button flexible cable assembly to achieve reliable electrical connection between various electronic devices and an electronic control system inside an ultra-micro aircraft.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] A wool button flexible cable assembly, comprising:

[0010] A flexible cable and a button connector configured on the flexible cable;

[0011] The flexible cable is a rigid-flexible cable, comprising a flexible plate and a steel plate connector, wherein the flexible plate and the steel plate connector are alternately connected;

[0012] The distribution of the steel plate connectors corresponds to the distribution of contacts of each device, and the wool button connector is connected and fixed to the steel plate connectors.

[0013] In addition, a preferred solution is that the steel plate connector is a double-sided welding pad design, and the wool button connector can be installed on both the front and back sides of the steel plate connector.

[0014] In addition, a preferred solution is that the wool button connector includes an insulating base and a wool button contact piece arranged in the insulating base;

[0015] The insulating base is provided with a positioning structure for realizing blind installation of the button connector;

[0016] The positioning structure comprises a screw mounting hole formed at the center of the insulating base and positioning columns respectively formed on the welding end surface of the insulating base and the plugging end surface of the insulating base.

[0017] In addition, a preferred solution is that the steel plate connecting member includes a mounting hole and a positioning hole arranged corresponding to the screw mounting hole and the positioning column.

[0018] In addition, a preferred solution is that the steel plate connector includes an obstacle avoidance structure layer, and the obstacle avoidance structure layer is configured to achieve obstacle avoidance when the wool button flexible cable assembly is electrically connected to an external device.

[0019] In addition, a preferred solution is that the wool button connector includes a plurality of wool button contacts, and the plurality of wool button contacts are symmetrically distributed on the insulating base.

[0020] In addition, a preferred solution is that the wool button connector is installed in a stacked manner.

[0021] In addition, a preferred solution is that the wool button contact piece protrudes from the plug-in end surface;

[0022] The length of the wool button contact piece protruding from the plug-in end surface is less than or equal to 20% of the total length of the wool button contact piece.

[0023] In addition, a preferred solution is that the thickness of the flexible plate is less than or equal to 0.7 mm.

[0024] The beneficial effects of the present invention are as follows:

[0025] In view of the technical problems existing in the prior art, the embodiment of the present application provides a fur button flexible cable assembly, which realizes the electrical connection between various electronic devices and the electric control system inside the ultra-micro aircraft through the cooperation of the flexible cable and the fur button connector, and has the advantages of small size, anti-misinsertion and blind installation. The flexible cable used is formed by alternating connection of flat linear flexible board and steel plate connector. According to the positional relationship between the various devices, a segmented design is adopted for reasonable layout to realize the electrical connection between the various devices in a small space, and the flexible cable can carry a sufficiently large current overload to meet the power supply requirements of various devices. The thickness of the flexible board part is within 0.7mm, so that the overall volume of the fur button flexible cable assembly is smaller to meet the limitation of the assembly space of the ultra-micro aircraft. In addition, the fur button connector used in the embodiment of the present invention is small in size, reliable in connection and has an anti-error design. By connecting with various devices through the fur button connector, the reliability of the electrical connection between the devices can be improved, the wire lead-out of each device can be reduced, and the assembly space can be effectively saved, and the positioning structure of the fur button connector provides a guarantee for the blind installation of the fur button connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0027] Figure 1 A schematic structural diagram of a wool button flexible cable assembly provided by an embodiment of the present invention is shown.

[0028] Figure 2 A schematic structural diagram of the crimping end surface of the wool button connector provided by an embodiment of the present invention is shown.

[0029] Figure 3 A schematic structural diagram of the welding end surface of the wool button connector provided in an embodiment of the present invention is shown.

[0030] Figure 4 A cross-sectional view of a wool button connector provided by an embodiment of the present invention is shown.

[0031] Figure 5 A schematic diagram showing the connection relationship between the wool button connector and the steel plate connector provided in an embodiment of the present invention.

[0032] Figure 6 A front structural schematic diagram of a steel plate connecting piece provided in an embodiment of the present invention is shown.

[0033] Figure 7 A schematic diagram of the back structure of the steel plate connecting piece provided in an embodiment of the present invention is shown.

[0034] Figure 8 A schematic diagram showing obstacle avoidance of the wool button flexible cable assembly provided by an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operate in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] In order to overcome the defects of the prior art, the embodiment of the present invention provides a wool button flexible cable assembly, combined with Figure 1-6As shown, the button-flexible cable assembly includes a flexible cable and a button-flexible connector 1 configured on the flexible cable. The flexible cable is a rigid-flexible cable, including a flat linear flexible board 2 and a steel board connector 3 connected to the flexible board 2. The flexible board 2 and the steel board connector 3 are alternately connected, and the button-flexible connector 1 is connected and fixed to the steel board connector 3. The button-flexible cable assembly provided in this embodiment is used to realize the electrical connection between various devices in a small space. The distribution of the steel board connector 3 corresponds to the distribution of the contacts of each device. Each of the steel board connectors 3 is configured with a button-flexible connector 1. The button-flexible connector 1 is respectively crimped and connected to each contact. The flexible cable is connected to each button-flexible connector 1, thereby realizing the electrical connection between various devices.

[0040] In one embodiment, Figure 2-5 As shown, the button connector 1 includes an insulating base 11 and a plurality of button contacts 12 disposed in the insulating base 11. The insulating base 11 includes a positioning structure for realizing blind installation of the button connector 1. The positioning structure includes a screw mounting hole 13 formed at the geometric center of the insulating base 11 and two groups of positioning posts 14 formed on the welding end face 111 of the insulating base 11 and the plug-in end face 112 of the insulating base 11, respectively. The button connector 1 can be connected to the circuit board of each device, and then the button connectors 1 are connected through a flexible cable, so as to realize the electrical connection between the devices, so as to replace the wire welding connection method, improve the reliability of the connection, and save the assembly space. Specifically, the welding end face 111 of the button connector 1 is welded and connected to the steel plate connector 3, and multiple button connectors 1 are welded and connected to the flexible cable. The plug-in end face 112 of each button connector 1 is respectively connected to the circuit board on the device end to be connected, so as to realize the electrical connection between the contacts in the device and even between the devices.

[0041] In one embodiment, Figure 6 as well as Figure 7 As shown, the steel plate connector 3 is a double-sided solder pad design, that is, both the front and back sides of the steel plate connector 3 include solder pads 30, both of which can be connected to the wool button connector 1, so that the wool button flexible cable assembly is not restricted by the relative position relationship between the various contact points to be connected, and can achieve electrical connection between various devices in a small space.

[0042] In this embodiment, the flexible cable realizes the connection between the button connector 1 and the flexible cable through the steel plate connector 3. The steel plate connector 3 includes a solder pad 30 corresponding to the button contact 12 on the button connector 1, a positioning hole 31 corresponding to the positioning column 14, and a mounting hole 32 corresponding to the screw mounting hole 13. The number of the positioning columns 14 on the welding end surface 111 of the insulating base 11 is two, that is, the number of the positioning holes 31 on the steel plate connector 3 is also two. The matching relationship between the positioning column 14 and the positioning hole 31 and the corresponding relationship between the screw mounting hole 13 and the mounting hole 32 can ensure the installation direction between the button connector 1 and the steel plate connector 3 to prevent incorrect assembly. Similarly, the number of the positioning posts 14 located on the plug-in end face 112 is also two, and the circuit board at the device end also includes positioning holes arranged in correspondence with the positioning posts 14. The positioning posts 14 cooperate with the positioning holes to realize blind installation of the button connector 1 and the device end, thereby ensuring the installation direction and installation accuracy of the button connector 1. After the button connector 1, the flexible cable, and the circuit board at the device end are connected accordingly, the button connector 1 and the steel plate connector 3 are pressed onto the circuit board at the device end by screws corresponding to the screw mounting holes 13, thereby realizing a reliable connection between the button connector 1 and the device end. In actual operation, the steel plate connector 3 can be first welded and fixed to the welding end face 111 of the insulating base 11 to realize the connection and fixation between the button connector 1 and the flexible cable, and then the button connector 1 can be pressed onto the circuit board at the device end by screws. In addition, the steel plate connector 3 also includes wiring vias 33.

[0043] In one embodiment, the number of each group of positioning posts 14 is two, that is, the number of positioning posts formed on the welding end face 111 is two, and they are formed by extending from the welding end face 111 to the side away from the crimping end face 112. Similarly, the number of positioning posts formed on the crimping end face 112 is two, and they are formed by extending from the crimping end face 112 to the side away from the welding end face 111. The two positioning posts on the same end face are arranged along the same side, and of course they can also be arranged diagonally, which is not limited by the present invention. Preferably, the positioning posts 14 are integrally formed with the insulating base 11 to play a role in positioning and preventing installation errors.

[0044] In one embodiment, the fur button contact member 12 is a columnar body, which is formed by winding and hinged a gold-plated metal wire through a special process. The fur button contact member 12 is an elastic contact member. In actual use, those skilled in the art can customize the length of the fur button contact member according to actual needs.

[0045] In a specific embodiment, the button contact 12 is installed in the installation hole of the insulating base 11, and the button contact 12 is protruded from the crimping end face 112 of the insulating base 11, so as to facilitate crimping installation with an external device. Preferably, the length of the button contact 12 protruding from the plug-in end face 112 is not greater than 20% of the total length of the button contact 12.

[0046] In one embodiment, the button connector 1 further includes a metal pad 16, which is installed in the mounting hole of the insulating base 11 together with the button contact 12. The metal pad 16 is located at one end of the button contact 12 close to the welding end face 111. In order to facilitate welding with the steel plate connector 3, the metal pad 16 is protruded from the welding end face 111. During assembly, the button contact 12 and the metal pad 16 are first assembled together, and then the whole is installed in the corresponding mounting hole of the insulating base 11. Specifically, during use, the metal pad 16 can be welded to the steel plate connector 3 on the flexible cable to form a reliable connection.

[0047] In one embodiment, the wool button connector 1 is not provided with a metal pad, and the wool button contact 12 protrudes from the upper and lower end surfaces of the insulating base 11, and the wool button contact 12 is symmetrically distributed on the insulating base 11. At this time, the wool button connector 1 is crimped to the device end and the flexible cable. When installing the wool button connector 1, there is no need to distinguish between the front and back sides of the wool button connector 1, and the wool button connector 1 can be installed at will.

[0048] In one embodiment, the fur button connector 1 is as follows Figure 1 The form shown is installed on the flexible cable. Because the steel plate connector 3 is a double-sided pad design, the button connector 1 can be installed on the front or back side of the steel plate connector 3 to facilitate connection with the circuit board of the device as the installation standard. For example, A in the figure is the button connector 1 installed on the front side of the steel plate connector 3. Figure 1 The button connector 1 is installed on the reverse side of the steel plate connector 3 at B. In addition, in other embodiments, the button connector has another installation form, namely Figure 1 The stacked installation form shown at C in the middle, the two installation forms can be used in combination to meet the connection needs of various devices in a small space.

[0049] In a specific embodiment, the welding end face includes a stress step 17 protruding along the periphery of the screw mounting hole 13 in a direction away from the plug-in end face. The stress step 17 can withstand the extrusion stress when the screw 15 is tightened to ensure that the wool button connector 1 will not be damaged due to the large tightening torque. At the same time, when the metal pad 16 is welded to the steel plate connector 3, a certain space can be reserved to facilitate the welding operation of the wool button connector 1 and the flexible cable.

[0050] In one embodiment, individual steel plate connectors 3 need to be designed with an obstacle avoidance structure layer 4 due to the requirements of the installation environment, for example Figure 8 When there is an obstacle 100, it is necessary to design the thickness of the steel plate connector 3 at the corresponding position separately, calculate the height of the obstacle to be avoided, and increase the overall thickness of the steel plate connector 3 through the obstacle avoidance structure layer 4 to control the outlet height of the flexible plate 2 to achieve obstacle avoidance of the obstacle 100.

[0051] The fur button flexible cable assembly provided in the embodiment of the present invention realizes the electrical connection between various electronic devices and the electric control system inside the ultra-micro aircraft through the cooperation of the flexible cable and the fur button connector. The flexible cable is formed by alternating the connection of flat linear flexible plates and steel plate connectors. According to the positional relationship between the various devices, a segmented design is adopted for reasonable layout to realize the electrical connection between the various devices in a small space, and the flexible cable can carry a sufficiently large current overload to meet the power supply requirements of various devices. The thickness of the flexible plate part is within 0.7mm to meet the limitations of the assembly space of the ultra-micro aircraft. In addition, the fur button connector used in the embodiment of the present invention is small in size, reliable in connection and has an anti-error design. By connecting with various devices through the fur button connector, the reliability of the electrical connection between the devices can be improved, the wire lead-out of each device can be reduced, and the assembly space can be effectively saved. The positioning structure of the fur button connector provides a guarantee for the blind installation of the fur button connector.

[0052] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A wool button flexible cable assembly, characterized in that: The button-type flexible cable assembly comprises a flexible cable and a button-type connector disposed on the flexible cable; The flexible cable is a rigid-flexible cable, comprising a flexible plate and a steel plate connector, wherein the flexible plate and the steel plate connector are alternately connected; The distribution of the steel plate connectors corresponds to the distribution of the contacts of each device, and the wool button connector is connected and fixed to the steel plate connector; The steel plate connector is a double-sided solder pad design, and the button connector can be installed on both the front and back sides of the steel plate connector; The wool button connector comprises an insulating base and a wool button contact piece arranged in the insulating base; The insulating base is provided with a positioning structure for realizing blind installation of the button connector; The positioning structure includes a screw mounting hole formed in the center of the insulating base and positioning columns formed on the welding end surface of the insulating base and the plugging end surface of the insulating base respectively; The steel plate connecting piece includes a mounting hole and a positioning hole arranged corresponding to the screw mounting hole and the positioning column; The steel plate connector includes an obstacle avoidance structure layer, and the obstacle avoidance structure layer is configured to achieve obstacle avoidance when the wool button flexible cable assembly is electrically connected to an external device.

2. The wool button flexible cable assembly according to claim 1, characterized in that: The wool button connector comprises a plurality of wool button contacts, and the plurality of wool button contacts are symmetrically distributed on the insulating base.

3. The wool button flexible cable assembly according to claim 1, characterized in that: The wool button connector is installed in a stacked manner.

4. The wool button flexible cable assembly according to claim 1, characterized in that: The wool button contact piece protrudes from the plug-in end surface; The length of the wool button contact piece protruding from the plug-in end surface is less than or equal to 20% of the total length of the wool button contact piece.

5. The wool button flexible cable assembly according to claim 1, characterized in that: The thickness of the flexible plate is less than or equal to 0.7 mm.

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