Fast-assembly Chinese display keyboard of frequency converter

Abstract

The utility model discloses a frequency converter fast-assembly Chinese display keyboard, which comprises a lower shell, a mounting groove is arranged in the upper side wall of the lower shell, a mounting seat is movably connected in the mounting groove, a circuit board is mounted on the upper side wall of the mounting seat, and an upper shell is mounted on the upper side wall of the circuit board; the left side wall and the right side wall of the lower shell are both provided with elastic piece buckles, and a key sleeve is installed between the upper shell and the circuit board. According to the utility model, the keyboard is convenient and fast to assemble without screws, the silica gel keys of the front and rear covers are sealed to enhance the protection of the inside circuit board, and the keyboard can be quickly assembled and disassembled by adopting the elastic sheet buckle design when being mounted on the frequency converter.

Description

Technical Field

[0001] The utility model relates to the technical field of variable frequency speed regulation, in particular to a frequency converter quick-install Chinese display keyboard. Background Art

[0002] With the advancement of computer integration, control theory, and power electronics, variable frequency speed regulation technology has become a reality and is experiencing rapid growth. With its high-performance AC speed regulation features, such as a wide speed regulation range, high speed stabilization accuracy, fast response, and four-quadrant operation, frequency converters have gradually become dominant in AC speed regulation systems. Currently, frequency converters are widely used for energy conservation in industries such as steel, petrochemicals, electricity, textiles, and papermaking. Keyboards, as a low-cost solution for human-computer interaction with frequency converters, are becoming increasingly important as frequency converters gain widespread adoption.

[0003] The inverter keyboards currently on the market usually adopt traditional installation methods. The installation process is relatively cumbersome, requires the use of tools for fixing, and is inconvenient to disassemble. Utility Model Content

[0004] The purpose of the present utility model is to solve at least one of the technical problems existing in the prior art and to provide a frequency converter quick-install Chinese display keyboard. The keyboard is quick and easy to assemble without the need for screws. The front and rear covers are sealed with silicone buttons to enhance the protection of the circuit board inside. The keyboard is installed on the frequency converter using a spring clip buckle design and can be quickly installed and disassembled.

[0005] The utility model also provides a Chinese display keyboard with the inverter, comprising: a lower housing, an upper side wall of the lower housing having a mounting groove provided therein, a mounting seat movably connected therein, a circuit board mounted on the upper side wall of the mounting seat, and an upper housing mounted on the upper side wall of the circuit board;

[0006] The left side wall and the right side wall of the lower shell are both installed with spring clip buckles, and a button cover is installed between the upper shell and the circuit board.

[0007] According to the inverter quick-install Chinese display keyboard, a limit buckle is installed on the lower inner wall of the installation slot, and a limit slot is provided on the lower side wall of the upper shell. The limit buckle cooperates with the limit slot to facilitate the installation of the lower shell and the upper shell.

[0008] According to the inverter quick-install Chinese display keyboard, the left and right walls of the mounting seat are both provided with mating grooves, and the left inner wall and the right inner wall of the upper shell are both fixedly connected with mating protrusions, and the mating protrusions cooperate with the mating grooves to facilitate the installation of the upper shell and the mounting seat.

[0009] According to the inverter quick-install Chinese display keyboard, a fixing plate is installed on the upper side wall of the upper shell to protect the upper side wall of the upper shell. The fixing plate cooperates with the key cover to facilitate the key cover to pass through.

[0010] According to the inverter quick-install Chinese display keyboard, the key cover is made of silicone material, the upper side wall of the circuit board is movably connected with the key body, and each of the key bodies is socketed with the key cover, which can effectively improve the sealing effect between the key cover and the circuit board.

[0011] According to the inverter quick-install Chinese display keyboard, a display screen is installed on the upper side wall of the circuit board, and an observation slot is provided inside the upper shell. The observation slot cooperates with the display screen to facilitate observation of the display screen.

[0012] According to the inverter quick-install Chinese display keyboard, the lower shell and the spring clip buckle are made using an integrated molding technology, thereby improving the connection effect between the lower shell and the spring clip buckle.

[0013] According to the inverter quick-install Chinese display keyboard, the upper side wall of the key cover is provided with a display groove, which is convenient for marking different key functions.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is a structural diagram of the utility model's inverter quick-install Chinese display keyboard;

[0017] Figure 2 This is an exploded diagram of the utility model's inverter quick-install Chinese display keyboard;

[0018] Figure 3 This is a side view of the utility model's quick-install Chinese display keyboard for the inverter;

[0019] Figure 4 This is a front view of the utility model's quick-install Chinese display keyboard for the inverter.

[0020] Legend:

[0021] 1. Lower housing; 101. Mounting slot; 1011. Limiting buckle; 102. Spring clip buckle; 2. Mounting seat; 3. Circuit board; 301. Display screen; 4. Keypad cover; 5. Upper housing; 501. Fixing piece. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the present invention. The preferred embodiments of the present invention are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present invention, but it cannot be understood as a limitation on the scope of protection of the present invention.

[0023] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present invention. The terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. In addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections, indirect connections through an intermediate medium, or internal connections between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Reference Figure 1-4 The inverter quick-install Chinese display keyboard of the embodiment of the present invention includes: a lower shell 1, a mounting groove 101 is provided inside the upper side wall of the lower shell 1, a mounting seat 2 is movably connected inside the mounting groove 101, a circuit board 3 is installed on the upper side wall of the mounting seat 2, an upper shell 5 is installed on the upper side wall of the circuit board 3, a fixing piece 501 is installed on the upper side wall of the upper shell 5 to protect the upper side wall of the upper shell 5, the fixing piece 501 cooperates with the key cover 4 to facilitate the passage of the key cover 4, a display screen 301 is installed on the upper side wall of the circuit board 3, an observation slot is provided inside the upper shell 5, the observation slot cooperates with the display screen 301 to facilitate observation of the display screen 301.

[0025] A limiting clip 1011 is installed on the lower inner wall of the mounting groove 101, and a limiting clip slot is provided on the lower side wall of the upper shell 5. The limiting clip 1011 cooperates with the limiting clip slot to facilitate the installation of the lower shell 1 and the upper shell 5. The left and right walls of the mounting seat 2 are both provided with matching grooves, and the left and right inner walls of the upper shell 5 are fixedly connected with matching protrusions, which cooperate with the matching protrusions and the matching grooves to facilitate the installation of the upper shell 5 and the mounting seat 2.

[0026] The left and right walls of the lower shell 1 are both equipped with spring clips 102. The lower shell 1 and the spring clips 102 are made of one-piece molding technology to improve the connection effect between the lower shell 1 and the spring clips 102. A key cover 4 is installed between the upper shell 5 and the circuit board 3. The key cover 4 is made of silicone material. The upper side wall of the circuit board 3 is movably connected to a key body. Each key body is socketed with the key cover 4, which can effectively improve the sealing effect between the key cover 4 and the circuit board 3. The upper side wall of the key cover 4 has a display groove, which is convenient for marking different key functions.

[0027] Working principle: The device uses a spring clip buckle to enable the keyboard to be quickly installed on the inverter without the use of tools. It is simple and convenient. In addition, the front and rear cover silicone buttons form a seal to enhance the protection of the circuit board inside.

[0028] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. The inverter quick-install Chinese display keyboard is characterized by: include: A lower shell (1), wherein an upper side wall of the lower shell (1) is provided with a mounting groove (101), a mounting seat (2) is movably connected to the interior of the mounting groove (101), a circuit board (3) is mounted on the upper side wall of the mounting seat (2), and an upper shell (5) is mounted on the upper side wall of the circuit board (3); The left side wall and the right side wall of the lower shell (1) are both installed with spring clip buckles (102), and a key cover (4) is installed between the upper shell (5) and the circuit board (3).

2. The inverter quick-install Chinese display keyboard according to claim 1, characterized in that: A limit buckle (1011) is installed on the lower inner wall of the installation slot (101), and a limit buckle (1011) is provided on the lower side wall of the upper shell (5), and the limit buckle (1011) cooperates with the limit buckle slot.

3. The inverter quick-install Chinese display keyboard according to claim 1, characterized in that: The left side wall and the right side wall of the mounting seat (2) are both provided with matching grooves, and the left inner wall and the right inner wall of the upper shell (5) are both fixedly connected with matching protrusions, and the matching protrusions match the matching grooves.

4. The inverter quick-install Chinese display keyboard according to claim 1, characterized in that: A fixing plate (501) is installed on the upper side wall of the upper shell (5), and the fixing plate (501) cooperates with the key cover (4).

5. The inverter quick-install Chinese display keyboard according to claim 1, characterized in that: The key cover (4) is made of silica gel material, and the upper side wall of the circuit board (3) is movably connected with a key body, and each key body is sleeved with the key cover (4).

6. The inverter quick-install Chinese display keyboard according to claim 1, characterized in that: A display screen (301) is installed on the upper side wall of the circuit board (3), and an observation slot is provided inside the upper shell (5), and the observation slot cooperates with the display screen (301).

7. The inverter quick-install Chinese display keyboard according to claim 1, characterized in that: The lower shell (1) and the spring clip buckle (102) are manufactured using an integral molding technology.

8. The inverter quick-install Chinese display keyboard according to claim 1, characterized in that: The upper side wall of the key cover (4) is provided with a display groove.

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