Cable interface reinforcement structure, keyboard and cable interface assembly method

Abstract

The application discloses a cable interface reinforcing structure, a keyboard and a cable interface assembling method. The cable interface reinforcing structure comprises a circuit board, a cable interface being connectable to the circuit board; a bottom shell, the circuit board being connected to the bottom shell, the bottom shell being provided with a first through hole, the first through hole being used for allowing the cable interface to pass through, a protruding part being arranged at the edge of the first through hole, the protruding part being arranged around the first through hole, and the inner side wall of the protruding part comprising mutually parallel inclined parts, the inclined parts being at an angle with the bottom shell. In the application, the cable interface connected to the circuit board passes through the first through hole to reach the inside of the protruding part at the edge of the through hole, the cable interface continues to be inserted along the inner wall of the protruding part, the direction of insertion is at an angle with the bottom shell, until one side of the circuit board contacts the bottom shell, the other side of the circuit board is also connected to the bottom shell, the side wall of the cable interface is extruded by the inclined part, so that the cable interface is reinforced, and the production and assembly of the bottom shell are facilitated.

Description

Technical Field

[0001] This invention relates to the field of cable interfaces, and in particular to a cable interface reinforcement structure, a keyboard, and a cable interface assembly method. Background Technology

[0002] When the inverter control keypad is used independently after being separated from the inverter body, it needs to be connected to the inverter body via a cable. If the cable interface on the inverter control keypad uses surface-mount devices, it needs to be reinforced to prevent damage from vibration or pulling. There are generally two existing reinforcement solutions for surface-mount cable interfaces on inverter control keypads: one is to control the gap between the control keypad housing and the surface-mount cable interface, ensuring a tight fit; the other is to completely enclose the surface-mount cable interface with the control keypad housing, leaving a through-hole for the cable connector insertion. A tight fit between the control keypad housing and the cable interface makes production and assembly difficult, while a loose fit fails to effectively reinforce the cable interface. Summary of the Invention

[0003] To solve at least one of the above-mentioned technical problems, the present invention provides a cable interface reinforcement structure, a keyboard, and a cable interface assembly method, the technical solution of which is as follows:

[0004] The present invention provides a cable interface reinforcement structure, comprising: a circuit board, wherein the cable interface can be connected to the circuit board; a bottom shell, wherein the circuit board is connected to the bottom shell, the bottom shell is provided with a first through hole for the cable interface to pass through, the edge of the first through hole is provided with a protrusion, the protrusion is arranged around the first through hole, and the inner sidewall of the protrusion includes mutually parallel inclined portions, the inclined portions forming an angle with the bottom shell.

[0005] The embodiments of the present invention have at least the following beneficial effects: In the present invention, the cable interface connected to the circuit board passes through the first through hole to the inside of the protrusion at the edge of the through hole. The cable interface continues to be inserted along the inner wall of the protrusion, and the direction of insertion is at an angle to the bottom shell until one side of the circuit board contacts the bottom shell, and the other side of the circuit board is also connected to the bottom shell. The side wall of the cable interface is squeezed by the inclined part to strengthen the cable interface, which facilitates the production and assembly of the bottom shell.

[0006] In some embodiments of the present invention, the protrusion is disposed between the bottom shell and the circuit board.

[0007] In some embodiments of the present invention, a support portion is provided on the bottom shell, the support portion protruding from the bottom shell, and the support portion is used to connect to and support the circuit board.

[0008] In some embodiments of the present invention, the circuit board can be connected to a cable interface by soldering.

[0009] In some embodiments of the present invention, a fixing part is provided on the bottom shell, the fixing part protrudes from the bottom shell, the fixing part is located between the bottom shell and the circuit board, and the fixing part is used to fix the circuit board to the bottom shell.

[0010] In some embodiments of the present invention, the fixing part is provided with a threaded hole for connection with a bolt, and the circuit board and the bottom shell can be fixed by bolt connection.

[0011] The present invention provides a keyboard, comprising: a top shell, a cable interface, and the aforementioned cable interface reinforcement structure, wherein the top shell is provided with a connecting structure, and the top shell is connected to the bottom shell through the connecting structure.

[0012] The embodiments of the present invention have at least the following beneficial effects: In the present invention, the bottom shell limits the position of the cable interface, thereby preventing the cable interface from being displaced on the circuit board and thus affecting the connection between the cable interface and the circuit board.

[0013] In some embodiments of the present invention, the connecting structure includes a snap groove disposed on the side wall of the top shell, and a snap fastener is disposed on the edge of the bottom shell, the snap fastener being capable of engaging with the snap groove.

[0014] In some embodiments of the present invention, an operation unit is provided on the circuit board, and a second through hole is provided on the top shell, through which the operation unit can pass.

[0015] The present invention provides a cable interface assembly method, comprising: soldering the cable interface onto a circuit board; passing the cable interface through a first through hole in a direction parallel to the inclined portion; after one side of the circuit board contacts the bottom shell, pressing the opposite side of the circuit board to make the circuit board fit against the bottom shell; and installing the upper shell onto the bottom shell.

[0016] The embodiments of the present invention have at least the following beneficial effects: In the present invention, the cable interface is inserted into the protrusion along the inclined side wall, the circuit board is at a certain angle to the bottom shell, and then force is applied to make the circuit board adhere to the bottom shell. The mutually parallel inclined parts of the inner side wall of the protrusion clamp the side wall of the cable interface, thereby fixing the cable interface. The operation is simple and the cable interface can be reinforced during the assembly process.

[0017] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a schematic diagram of the cable interface reinforcement structure of the present invention;

[0020] Figure 2 This is a schematic diagram of the cable interface in the cable interface reinforcement structure of the present invention;

[0021] Figure 3 This is a schematic diagram of the cable interface connecting to the circuit board in the cable interface reinforcement structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the bottom shell structure in the cable interface reinforcement structure of the present invention;

[0023] Figure 5 This is a cross-sectional view of the bottom shell in the cable interface reinforcement structure of the present invention;

[0024] Figure 6 This is a partially enlarged cross-sectional view of the bottom shell in the cable interface reinforcement structure of the present invention;

[0025] Figure 7 This is a schematic diagram of the top shell structure in the keyboard of the present invention;

[0026] Figure 8 This is a schematic diagram of the structure of each component in the keyboard of this invention;

[0027] Figure 9 This is a structural schematic diagram of the assembly process of the circuit board and the bottom shell in the cable interface assembly method of the present invention;

[0028] Figure 10 This is a schematic diagram of the structure after the circuit board and the bottom shell are assembled in the cable interface assembly method of the present invention;

[0029] Figure 11 This is a schematic diagram of the structure after the top shell and bottom shell are assembled in the cable interface assembly method of the present invention.

[0030] Figure label:

[0031] 101. Circuit board; 102. Cable interface;

[0032] 201. Bottom shell; 202. First through hole; 203. Inclined part; 204. Support part; 205. Fixing part; 206. Threaded hole;

[0033] 301. Top shell; 302. Clip groove; 303. Snap fastener; 304. Second through hole;

[0034] 401. Signal patch solder joint; 402. Reinforcing solder pad; 403. Cable connector. Detailed Implementation

[0035] This section will combine Figures 1 to 11 Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, it should be understood that the terms "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential," indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Features defined with "first" and "second" are used to distinguish feature names and do not have special meanings. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0037] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0038] With technological advancements and accumulation, the miniaturization trend of frequency converters is becoming increasingly apparent, with each component becoming smaller and more integrated. The frequency converter's operation keypad, serving as the human-machine interface, is also adapting to this trend.

[0039] Surface mount devices (SMDs) offer numerous advantages, including small size, low cost, high integration, and ease of automated production. To achieve miniaturization of inverter control keyboards, the electronic components of inverter control keyboards are increasingly adopting SMDs. However, SMDs exhibit relatively poor vibration and tensile strength compared to through-hole devices.

[0040] like Figure 1As shown, this embodiment of the invention provides a cable interface reinforcement structure, which includes a circuit board 101 and a bottom shell 201.

[0041] like Figure 2 As shown, the cable interface 102 is generally formed in a block shape. The surface of the cable interface 102 is provided with a cable inlet 403, and the cable can be inserted and connected to the cable inlet 403. The end of the cable interface 102 is provided with a signal patch solder joint 401 and a reinforcing solder joint 402. Specifically, the signal patch solder joint 401 and the reinforcing solder joint 402 are provided at the same end of the cable interface 102 and extend from the cable interface 102 to the outside of the cable interface 102.

[0042] like Figure 3 As shown, the cable interface 102 can be connected to the circuit board 101. Specifically, one end of the cable interface 102 with signal patch solder joint 401 is connected to the circuit board 101. The signal is transmitted from the circuit board 101 to the cable interface 102 through the signal patch solder joint 401, and the cable interface 102 then transmits the signal to the cable, realizing the information transmission between the circuit board 101 and the frequency converter.

[0043] Furthermore, the cable interface 102 is connected to the circuit board 101 by soldering. The signal patch solder joint 401 and the reinforcing solder joint 402 are both soldered to the circuit board 101. The signal patch solder joint 401 is soldered to the information receiver of the circuit board 101, ensuring smooth communication while keeping the relative position of the cable interface 102 and the circuit board 101 unchanged.

[0044] like Figures 4 to 5 As shown, the bottom shell 201 is connected to the circuit board 101. A first through-hole 202 is provided on the bottom shell 201, allowing the cable interface 102 to pass through. Specifically, after the bottom shell 201 is connected to the circuit board 101, signal patch solder joints 401 and reinforcing solder pads 402 are located between the bottom shell 201 and the circuit board 101, reinforcing the connection between the cable interface 102 and the circuit board 101. The cable inlet 403 is exposed outside the bottom shell 201, facilitating cable access.

[0045] Furthermore, a protrusion is provided at the edge of the first via 202, and the protrusion is arranged around the first via 202. Specifically, the protrusion surrounds the first via 202, and a channel is formed inside the protrusion. The protrusion is connected to the side wall of the cable interface 403, guiding the cable interface 102 through the bottom shell 201. At the same time, the protrusion is used to define the position of the cable interface 102, further reinforcing the connection between the cable interface 102 and the circuit board 101.

[0046] In some examples, the protrusion is located between the bottom shell 201 and the circuit board 101. That is, the protrusion extends from the bottom shell 201 toward the side closer to the circuit board 101. While ensuring that the protrusion can achieve the reinforcement function, the volume of the bottom shell 201 is reduced. At the same time, the shape of the bottom shell 201 is regular and easy to store.

[0047] like Figure 6 As shown, the inner wall of the protrusion includes parallel inclined portions 203. The inclined portions 203 are at an angle to the bottom shell 201. The inclined portions 203 create a channel within the protrusion at a certain angle to the bottom shell 201. To allow the cable interface 102 to pass smoothly through the protrusion, the cable interface 102 also needs to form a corresponding angle with the bottom shell 201. Since the cable interface 102 is connected to one side of the circuit board 101, it can be understood that when the cable interface 102 passes through the first through hole 202 through the protrusion, the circuit board 101 also forms a corresponding angle with the bottom shell 201. After the cable interface 102 passes through the protrusion, one side of the circuit board 101 contacts the bottom shell 201 first. Force is applied to the opposite side of the circuit board 101 to make the circuit board 101 adhere to the bottom shell 201, completing the installation. At this time, the inclined part 203 clamps the cable interface 102 on the side wall of the cable interface 102, and the connection between the cable interface 102 and the circuit board 101 is reinforced, preventing relative movement between the cable interface 102 and the circuit board 101.

[0048] Specifically, the angle between the inclined part 203 and the bottom shell 201 is adjusted according to the assembly clearance and preload required for the reinforced cable interface 102. The larger the assembly clearance, the larger the inclination angle, and the greater the clamping force required.

[0049] In some examples, a support portion 204 is provided on the base shell 201, protruding from the base shell 201. The support portion 204 is used to support the circuit board 101 on the base shell 201. It is understood that the support portion 204 is located between the base shell 201 and the circuit board 101. Specifically, to improve the support effect, the support portion 204 is located at the edge of the base shell 201 and extends around the edge of the base shell 201. Furthermore, since the protrusion is also located between the base shell 201 and the circuit board 101, when the height of the protrusion is greater than the height of the support portion 204, the circuit board 101 is supported by the protrusion, and the support portion 204 does not contact the circuit board 101. This can easily cause excessive local stress on the circuit board 101, leading to damage. Therefore, the height of the support portion 204 is greater than or equal to the height of the protrusion.

[0050] In some examples, a fixing part 205 is provided on the bottom shell 201 for further connecting the assembled circuit board 101 to the bottom shell 201. To reduce the size of the keyboard, the bottom shell 201 is relatively thin. Therefore, the fixing part 205 protrudes from the bottom shell 201 to facilitate the connection between the circuit board 101 and the bottom shell 201. It is understood that the fixing part 205 is located between the bottom shell 201 and the circuit board 101.

[0051] In some examples, the fixing part 205 is provided with a threaded hole 206, and the circuit board 101 and the bottom shell 201 are connected and fixed by bolts. The bolts pass through the circuit board 101 and connect to the threaded hole 206 to complete the fixing work.

[0052] In some examples, the circuit board 101 is not fixed to the bottom shell 201. During the installation of the circuit board 101 on the bottom shell 201, force is required to make it fit together. When no force is applied, the circuit board 101 tends to tilt upwards. The circuit board 101 is wrapped inside the top shell 301 and the bottom shell 201 by connecting the top shell 301 and the bottom shell 201, thereby preventing the circuit board 101 from tilting upwards.

[0053] like Figure 8 As shown, an embodiment of the present invention provides a keyboard, which includes a top shell 301, a cable interface 102, and the aforementioned cable interface reinforcement structure.

[0054] like Figure 7 As shown, in order to ensure that the top shell 301 can be installed on the bottom shell 201 and that the connection is tight and not easy to loosen, the top shell 301 is provided with a connection structure, and the top shell 301 and the bottom shell 201 are connected through the connection structure.

[0055] In some examples, the connection structure includes a slot 302, and a latch 303 is provided on the bottom shell 201. The slot 302 can connect and engage with the latch 303, connecting the top shell 301 and the bottom shell 201. Specifically, to ensure easy assembly and disassembly of the top shell 301 and the bottom shell 201, the slot 302 is located on the side wall of the top shell 301, and the latch 303 is located on the edge of the bottom shell 201. The user can complete the assembly and disassembly by applying force to the edge of the keyboard. Alternatively, the top shell 301 and the bottom shell 201 can be connected by screws. The bottom shell 201 has screw holes, and the screws pass through the top shell 301 and connect to the screw holes.

[0056] In some examples, the user needs to transmit information to the circuit board 101 of the keyboard. The circuit board 101 is equipped with an operation unit, which includes buttons and knobs. The user transmits information to the circuit board 101 and then to the frequency converter by pressing or rotating the operation unit. To ensure that the user can touch the operation unit, a second through hole 304 is provided on the top shell 301. When the top shell 301 is assembled on the bottom shell 201, the operation unit passes through the second through hole 304.

[0057] This invention provides a cable interface assembly method, including: soldering the cable interface 102 onto the circuit board 101.

[0058] The signal patch solder joint 401 and the reinforcing solder joint 402 of the cable interface 102 are respectively soldered onto the circuit board 101 to ensure that the end of the cable interface 102 can be flatly attached to the circuit board 101 after soldering.

[0059] like Figure 9 As shown, the cable interface 102 passes through the first via 202 in a direction parallel to the inclined portion 203.

[0060] The inner wall of the protrusion includes an inclined portion 203. The inclined portion 203 makes the channel formed by the inner wall at a certain angle to the base plate, and adjusts the cable interface 102 connected to the circuit board 101 to the same angle as the inclined portion 203. Since the spacing of the inclined portions 203 is slightly larger than the width of the cable interface 102, the cable interface 102 can pass through the protrusion through the first through hole 202.

[0061] like Figure 10 As shown, after one side of the circuit board 101 contacts the bottom shell 201, the opposite side of the circuit board 101 is pressed to make the circuit board 101 adhere to the bottom shell 201.

[0062] Due to the tilt of the cable interface 102, the circuit board 101 will also tilt accordingly. As the cable interface 102 is inserted into the protrusion, one side of the circuit board 101 will first contact the bottom shell 201. Pressing the opposite side of the circuit board 101 forces it to adhere to the bottom shell 201. During this process, the cable interface 102 will rotate relative to the protrusion. The tilted portion 203 will clamp and reinforce the sidewall of the cable interface 102, while providing support and preload, increasing the cable interface 102's ability to withstand lateral forces. The end of the protrusion will press against the signal patch solder joint 401 and reinforcing solder pad 402 on the cable interface 102, preventing damage to the cable interface 102 due to vertical tension. After the circuit board 101 adheres to the bottom shell 201, if the bottom shell 201 is provided with a fixing portion 205, the connection between the bottom shell 201 and the circuit board 101 will be reinforced by the fixing portion 205.

[0063] like Figure 11As shown, the upper shell is installed onto the lower shell 201.

[0064] When the top shell 301 has a snap groove 302 on its side wall and the bottom shell 201 has a snap fastener 303 on its edge, the snap groove 302 of the top shell 301 and the snap fastener 303 of the bottom shell 201 are engaged with each other; when the bottom shell 201 has screw holes, the top shell 301 and the bottom shell 201 are fixed together with screws.

[0065] The cable interface 102 is reinforced during assembly to avoid additional processing steps. Furthermore, the reinforcement of the cable interface 102 is applied directly to the interface rather than to the circuit board 101, which can prevent the reinforcement performance from being reduced due to tolerances and deformation.

[0066] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. Cable interface reinforcement structure, including: The circuit board (101) and the cable interface (102) can be connected to the circuit board (101); A bottom shell (201) is provided, the circuit board (101) is connected to the bottom shell (201), the bottom shell (201) is provided with a first through hole (202), the first through hole (202) is used for the cable interface (102) to pass through, the edge of the first through hole (202) is provided with a protrusion, the protrusion is arranged around the first through hole (202), the inner sidewall of the protrusion includes mutually parallel inclined portions (203), the inclined portions (203) are at an angle to the bottom shell (201); After the cable interface (102) passes through the protrusion, one side of the circuit board (101) first contacts the bottom shell (201), and force is applied to the opposite side of the circuit board (101) to make the circuit board (101) fit against the bottom shell (201) to complete the installation.

2. The cable interface reinforcement structure according to claim 1, characterized in that, The protrusion is disposed between the bottom shell (201) and the circuit board (101).

3. The cable interface reinforcement structure according to claim 1, characterized in that, A support portion (204) is provided on the bottom shell (201), the support portion (204) protrudes from the bottom shell (201), and the support portion (204) is used to connect to and support the circuit board (101).

4. The cable interface reinforcement structure according to claim 1, characterized in that, The circuit board (101) can be connected to the cable interface (102) by soldering.

5. The cable interface reinforcement structure according to claim 1, characterized in that, A fixing part (205) is provided on the bottom shell (201). The fixing part (205) protrudes from the bottom shell (201) and is located between the bottom shell (201) and the circuit board (101). The fixing part (205) is used to fix the circuit board (101) to the bottom shell (201).

6. The cable interface reinforcement structure according to claim 5, characterized in that, The fixing part (205) is provided with a threaded hole (206), which is used for bolt connection. The circuit board (101) and the bottom shell (201) can be fixed by bolt connection.

7. A keyboard, characterized in that, The device includes a top shell (301), a cable interface (102), and a cable interface reinforcement structure as described in any one of claims 1 to 6. The top shell (301) is provided with a connecting structure, and the top shell (301) is connected to the bottom shell (201) through the connecting structure.

8. The keyboard according to claim 7, characterized in that, The connection structure includes a buckle groove (302) disposed on the side wall of the top shell (301), and a buckle (303) disposed on the edge of the bottom shell (201), the buckle (303) being able to engage with the buckle groove (302).

9. The keyboard according to claim 7, characterized in that, An operating unit is provided on the circuit board (101), and a second via (304) is provided on the top shell (301), through which the operating unit can pass.

10. A cable interface assembly method, applied to the cable interface reinforcement structure as described in any one of claims 1-6, characterized in that: Solder the cable connector (102) onto the circuit board (101); The cable interface (102) passes through the first via (202) in a direction parallel to the inclined portion (203); After one side of the circuit board (101) contacts the bottom shell (201), press the opposite side of the circuit board (101) to make the circuit board (101) adhere to the bottom shell (201). Install the upper shell onto the lower shell (201).

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