Bus keypad for construction machines

Abstract

The application discloses a bus KEYPAD for engineering machinery and belongs to the field of engineering machinery. It mainly comprises a shell, a middle frame arranged in the shell, a silica gel button part and a knob assembly arranged above the middle frame, a button switch shell matched with the silica gel button part and a knob swing block mechanism matched with the knob assembly arranged in the middle frame, and a button printing plate part arranged at the bottom of the middle frame, wherein a diaphragm switch matched with the button switch shell and the knob assembly is arranged on the button printing plate part. The button and the knob have high integration degree, the button saves multiple physical switches and physical wires, the knob assembly can realize shaking in four directions, i.e. front, back, left and right, pressing downward and rotating by 360 degrees, so as to realize the operation on multiple interfaces of the instrument. The application is mainly used for the switch of the engineering machinery.

Description

Technical Field

[0001] This invention belongs to the field of engineering machinery, and more specifically, it relates to a bus KEYPAD for engineering machinery. Background Technology

[0002] With the development of bus communication technology, KEYPAD switches and knobs with communication functions are increasingly widely used due to their reliability, stable signal transmission, and reduced hard-wire connections. Currently, most switches used in construction machinery are still physical switches with hard-wire connections, which suffer from complex wiring, high failure rates, and complex maintenance. Furthermore, hard-wired switches are mostly independent and have limited functionality. Currently, there is no switch for construction machinery that can solve the problems of complex wiring connections and low button integration. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a bus KEYPAD for engineering machinery. The KEYPAD has a high degree of integration of button and knob functions. The buttons save multiple physical switches and physical wires. The knob assembly can be rocked in four directions (front, back, left, and right), pressed down, and rotated 360°, thereby realizing the operation of multiple interfaces of the instrument.

[0004] The aforementioned KEYPAD bus for engineering machinery includes a housing, an inner frame, a silicone button component and a knob assembly on the upper part of the inner frame, a button switch housing that mates with the silicone button component and a knob swing block mechanism that mates with the knob assembly inside the inner frame, and a button printing plate component at the bottom of the inner frame. The button printing plate component has a diaphragm switch that mates with the button switch housing and the knob assembly.

[0005] Preferably, the knob assembly includes a rotating shaft, a knob mechanism is provided above the rotating shaft, a knob swing block mechanism is installed below the rotating shaft, the rotating shaft passes through the silicone button component, the knob mechanism includes a knob body, a transparent inner sleeve is provided inside the knob body, a rotating bracket is provided inside the transparent inner sleeve, a rotating stop block is mounted on the rotating shaft, the rotating stop block is provided with a positioning pin and a buckle A, a multi-directional printing plate component and a direction indicator disk are installed on the rotating stop block through the positioning pin and the buckle A, the button printing plate component is provided with conductive silicone, and a top block that cooperates with the knob swing block mechanism is provided on the conductive silicone.

[0006] Preferably, the knob rocker mechanism includes a rocker body, a retaining ring, and a large spring plate. The rocker body is provided with a retaining block, the retaining ring is provided with a retaining hole, the retaining ring is connected to the retaining block on the rocker body through the retaining hole, and the large spring plate is set in the middle frame and cooperates with the rocker body.

[0007] Preferably, the rotating bracket has a mounting slot and one or more stops. A tension cap is installed in the mounting slot, and a spring is installed inside the tension cap. An optical coupler is installed on the multi-directional printing plate component, and the optical coupler cooperates with the stops. The tension cap and spring enable the pressing and rebounding of the knob assembly's pressing part.

[0008] Preferably, the multi-directional printing plate component is equipped with an LED flashing light, which is used in conjunction with an optical coupler.

[0009] Preferably, the rotating shaft passes through the knob rocker mechanism, and the bottom of the rotating shaft engages with a diaphragm switch on the keypad printing plate component.

[0010] Preferably, a silicone pad is provided above the button printing plate component, the silicone pad cooperates with the button switch housing, the silicone pad is provided with silicone pins, the silicone pad is connected to the button printing plate component through the silicone pins, and the housing is provided with a support that cooperates with the button printing plate component, the button printing plate component is installed into the housing through the support.

[0011] Preferably, the button printing plate component is equipped with an LED light, which works in conjunction with a diaphragm switch.

[0012] Preferably, the outer shell is provided with a breathable membrane.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. This invention integrates six buttons, saving a lot of physical switches and physical wires. The buttons cooperate with the diaphragm switch on the button printing plate component through the button switch housing. When the button switch housing is pressed, the diaphragm switch is activated, the electrical signal changes and is transmitted back to the bus instrument of the whole machine in the form of communication. When the button switch housing is released, the button switch housing is reset under the action of the diaphragm switch.

[0015] 2. Add a knob assembly, which cooperates with the multi-directional printing plate component through a rotating stop block to achieve 360° rotation of the knob;

[0016] 3. The knob assembly, through the cooperation of the knob swing block mechanism with the top block, conductive silicone and button printing plate components, enables the knob to swing in four directions: forward, backward and left, right.

[0017] 4. The knob assembly uses a rotating shaft to cooperate with a diaphragm switch on the button printing plate component to achieve the function of pressing the knob downwards;

[0018] 5. When using this invention, the diaphragm switches on the key printing plate component and the multi-directional printing plate component transmit commands to the bus instrument of the whole machine via CAN communication. The bus instrument will enter different working interfaces. By rotating or shaking the operation knob, the command option to be operated on the instrument interface can be selected. By pressing the operation knob, the selection of different functions can be confirmed, making it more convenient to use. Attached Figure Description

[0019] Figure 1 This is the front view of the present invention;

[0020] Figure 2 for Figure 1 Sectional view along line AA;

[0021] Figure 3 for Figure 2 Sectional view along the BB direction;

[0022] Figure 4 This is a schematic diagram of the structure of the present invention;

[0023] Figure 5 This is an exploded view of the present invention;

[0024] Figure 6 for Figure 5 A magnified view of part A in the middle;

[0025] Figure 7 for Figure 5 A magnified view of part B in the middle section;

[0026] Figure 8 This is a structural diagram of the middle frame;

[0027] Figure 9 This is a reference diagram showing the usage state of the present invention.

[0028] In the diagram: 1. Outer shell; 2. Middle frame; 3. Button switch housing; 4. Breathable membrane; 5. Button printing plate component; 6. Conductive silicone; 7. Top block; 8. Snap ring; 9. Swing block body; 10. Large spring; 11. Silicone button component; 12. Knob body; 13. Transparent inner sleeve; 14. Direction indicator; 15. Multi-directional printing plate component; 16. Rotary stop block; 17. Large sealing ring; 18. Tension cap; 19. Spring; 20. Small sealing ring; 21. Rotating bracket; 22. Rotating shaft; 23. Silicone pad; 24. Snap-on B; 25. Positioning pin; 26. Snap-on A; 27. Support; 28. Snap-on block; 29. ​​Snap-on hole; 30. Boss; 31. Silicone pin; 32. Ear seat; 33. Limiting hole; 34. Square limiting block; 35. Arc-shaped limiting block. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figures 1 to 4 and Figure 8 As shown, the KEYPAD bus for engineering machinery includes a housing 1, a middle frame 2 inside the housing 1, a silicone button component 11 and a knob assembly above the middle frame 2, a button switch housing 3 that mates with the silicone button component 11 and a knob swing block mechanism that mates with the knob assembly inside the middle frame 2, the button switch housing 3 can move up and down along the mounting groove inside the middle frame 2, and a button printing plate component 5 is provided at the bottom of the middle frame 2, the button printing plate component 5 is provided with a diaphragm switch that mates with the button switch housing 3 and the knob assembly.

[0031] When the silicone button component 11 is pressed down, the button switch housing 3 is displaced downwards. The button switch housing 3 touches and presses down on the diaphragm switch on the button printing plate component 5, causing the diaphragm switch to activate. This changes the electrical signal, which is then transmitted back to the main unit's bus instrument via communication. After the button is released, the button switch housing 3 returns to its original position under the reset action of the diaphragm switch.

[0032] like Figure 2 and Figure 5 As shown, the knob assembly includes a rotating shaft 22, which passes through the silicone button component 11 and is fixed to the silicone button component 11 by a groove on the rotating shaft 22. A knob mechanism is provided at the upper end of the rotating shaft 22, and a knob swing block mechanism is installed at the lower end of the rotating shaft 22. The knob mechanism includes a knob body 12, and a transparent inner sleeve 13 is provided inside the knob body 12. The transparent inner sleeve 13 is press-fitted with the knob body 12 by a buckle B24. A rotating bracket 21 is provided inside the transparent inner sleeve 13, and a large sealing ring 17 is provided between the transparent inner sleeve 13 and the rotating bracket 21. The rotating bracket 21 is assembled on the rotating shaft 22, and there are two protruding ear seats 32 on the rotating shaft 22. The rotating bracket 21 passes through the rotating shaft 22 and is locked on the ear seats 32.

[0033] like Figure 6 As shown, a small sealing ring 20 is provided between the rotating shaft 22 and the rotating bracket 21. A rotating stop block 16 is mounted on the rotating shaft 22. During assembly, first align the limiting hole 33 on the rotating stop block 16 with the square limiting block 34 on the rotating shaft 22, then press the rotating stop block 16 down against the spring 19 mounted on the rotating bracket 21, and then rotate the rotating stop block 16 upward until it touches the arc-shaped limiting block 35 on the rotating shaft 22. At this point, the installation is in place.

[0034] The rotary gear block 16 is provided with a positioning pin 25 and a buckle A26. The multi-directional printing plate component 15 and the direction indicator disk 14 are installed on the rotary gear block 16 through the positioning pin 25 and the buckle A26. The button printing plate component 5 is provided with conductive silicone 6. The conductive silicone 6 is provided with four top blocks 7 that cooperate with the knob swing block mechanism. The conductive silicone 6 is provided with silicone pins 31, and is assembled to the button printing plate component 5 through the silicone pins 31.

[0035] The rotating bracket 21 has holes and multiple positions. A tension cap 18 is installed inside the hole, and a spring 19 is installed inside the tension cap 18. The multi-directional printing plate component 15 is equipped with an optical coupler and an LED flashing light. The optical coupler cooperates with the positions and the LED flashing light. During installation, the tension cap 18 and spring 19 are placed directly inside the holes of the rotating bracket 21. The spring 19 and tension cap 18 enable the knob assembly to be pressed down and spring back. The optical coupler is commercially available. Its function is to record each rotation of the knob body 12 by one position, output a signal through the multi-directional printing plate component 15 to illuminate the LED flashing light, and simultaneously increment or decrement the transmitted message. In this embodiment, clockwise rotation increments, and counterclockwise rotation decrements.

[0036] The knob body 12 can rotate 360 ​​degrees via the pivot 22. During manufacturing, 12 evenly spaced positions, each representing 30 degrees, are arranged on the rotating bracket 21. During operation, each time the knob body 12 rotates one position, the optocoupler on the multi-directional printing plate component 15 collects a signal and transmits it back to the machine's bus instrument via communication. Rotating clockwise increments the signal by 1, and vice versa. When the knob body 12 rotates, the LED on the multi-directional printing plate component 15 flashes; when the knob body 12 is stationary, the LED does not illuminate.

[0037] like Figure 7 As shown, the knob rocker mechanism includes a rocker body 9, a retaining ring 8, and a large spring piece 10. The rocker body 9 is provided with two retaining blocks 28, and the retaining ring 8 is provided with retaining holes 29. The retaining ring 8 cooperates with the retaining blocks 28 on the rocker body 9 through the retaining holes 29. The large spring piece 10 is set in the middle frame 2. There are four large spring pieces 10, and the four large spring pieces 10 cooperate with the four protrusions 30 on the rocker body 9.

[0038] The knob body 12 can be rocked in four directions: forward, backward, left, and right. During installation, the four top blocks 7 correspond to the four directions: forward, backward, left, and right, respectively. This embodiment takes forward rocking as an example: When the knob body 12 swings forward, it drives the rotating shaft 22 and the swing block body 9 to swing together. The swing block body 9 presses down on the forward top block 7, driving the conductive silicone 6 to press down to the lower stop point, connecting the circuit of the keypad printing plate component 5, and transmitting the signal back to the bus instrument of the whole machine via communication. At the same time, the swing block body 9 swings forward, and the boss 30 presses the large spring 10, causing it to deform elastically. After the knob body 12 is released, the knob body 12 automatically resets under the action of the large spring 10. The principle of the knob body 12 swinging backward, left, and right is the same as above, and will not be described again.

[0039] The rotating shaft 22 passes through the knob swing block mechanism, and the bottom of the rotating shaft 22 cooperates with the diaphragm switch on the keypad printing plate component 5.

[0040] The knob body 12 can be pressed down. When the knob body 12 is pressed down, it drives the rotating shaft 22 to move downward, compressing the diaphragm switch on the keypad printing plate component 5, deforming it, thereby connecting the circuit and transmitting the data back to the main unit's bus instrument via communication. After the knob body 12 is released, it returns to its original position under the action of the diaphragm switch.

[0041] In the manufacture of this invention, a silicone pad 23 is provided above the button printing plate component 5. The silicone pad 23 cooperates with the button switch housing 3. The silicone pad 23 is provided with silicone pins 31. The silicone pad 23 is connected to the button printing plate component 5 through the silicone pins 31. The housing 1 is provided with a support 27 that cooperates with the button printing plate component 5. The button printing plate component 5 is installed in the housing 1 through the support 27. The button printing plate component 5 is provided with an LED light, which cooperates with the diaphragm switch. The housing 1 is provided with a breathable membrane 4.

[0042] like Figure 9 As shown, in use, this invention connects to the communication network of the entire machine. The invention connects to the machine's bus instrument panel, and the bus instrument panel's communication network connects to the bus air conditioner, bus radio, and engine. When the buttons on the silicone button component 11 are operated, commands are transmitted to the bus instrument panel via CAN communication according to the communication protocol. The bus instrument panel then enters different working interfaces. By rotating or shaking the knob body 12, the desired command option on the instrument panel is selected. By pressing the knob body 12, different function selections are confirmed. The bus instrument panel transmits the received selection commands from this invention to the bus radio, bus air conditioner, or engine, etc., according to the communication protocol, thereby enabling the KEYPAD to control the machine's instrument panel and other components.

[0043] When other components receive control commands and enter the working state, the bus instrument will transmit the commands to this invention via communication, illuminating the status indicator LEDs on the button printing plate component 5. The light source of the LEDs is projected onto the relevant patterns on the silicone button component 11, reminding the user that the corresponding function of the machine is working. When the ambient light is dim and the backlight function of the machine is turned on, the bus instrument will transmit the command to the button printing plate component 5 via communication, illuminating the backlight LEDs on the button printing plate component 5. The light source of the LEDs is projected onto the button patterns on the silicone button component 11, making it easier for the user to identify the pattern markings on the buttons and facilitating operation.

Claims

1. A bus KEYPAD for engineering machinery, comprising a housing (1), characterized in that: The outer shell (1) is provided with a middle frame (2), a silicone button component (11) and a knob assembly are provided above the middle frame (2), a button switch housing (3) that cooperates with the silicone button component (11) and a knob swing block mechanism that cooperates with the knob assembly are provided inside the middle frame (2), a button printing plate component (5) is provided at the bottom of the middle frame (2), and a diaphragm switch that cooperates with the button switch housing (3) and the knob assembly is provided on the button printing plate component (5); The knob assembly includes a rotating shaft (22), a knob mechanism is provided above the rotating shaft (22), and a knob swing block mechanism is installed below the rotating shaft (22). The rotating shaft (22) passes through the silicone button component (11). The knob mechanism includes a knob body (12), a transparent inner sleeve (13) is provided inside the knob body (12), a rotating bracket (21) is provided inside the transparent inner sleeve (13), and a rotating stop block (16) is mounted on the rotating shaft (22). The rotating stop block (16) is provided with a positioning mechanism. Pin (25) and buckle A (26), the multi-directional printing plate component (15) and direction indicator disk (14) are installed on the rotating gear block (16) through positioning pin (25) and buckle A (26), the button printing plate component (5) is provided with conductive silicone (6), the conductive silicone (6) is provided with a top block (7) that cooperates with the knob swing block mechanism; the rotating shaft (22) passes through the knob swing block mechanism, and the bottom of the rotating shaft (22) cooperates with the diaphragm switch on the button printing plate component (5); The knob rocker mechanism includes a rocker body (9), a retaining ring (8), and a large spring (10). The rocker body (9) is provided with a retaining block (28), and the retaining ring (8) is provided with a retaining hole (29). The retaining ring (8) is connected to the retaining block (28) on the rocker body (9) through the retaining hole (29). The large spring (10) is set in the middle frame (2) and cooperates with the rocker body (9). The rocker body (9) is provided with a boss (30). When the silicone button component (11) is pressed down, the button switch housing (3) will be displaced downward. The button switch housing (3) touches and presses down the diaphragm switch on the button printing plate component (5), causing the diaphragm switch to operate. The electrical signal changes and is transmitted back to the bus instrument of the whole machine in the form of communication. After releasing the button, the button switch housing (3) will reset under the reset action of the diaphragm switch. When the knob body (12) swings forward, it drives the rotating shaft (22) and the swing block body (9) to swing together. The swing block body (9) presses down the forward top block (7), which drives the conductive silicone (6) to press down to the lower stop point, connecting the circuit of the key plate component (5). At the same time, the swing block body (9) swings forward, and the boss (30) presses the large spring (10) to deform it elastically. After the knob body (12) is released, the knob body (12) automatically resets under the action of the large spring (10). When the knob body (12) is pressed down, it drives the rotating shaft (22) to move down, compressing the diaphragm switch on the key plate component (5), deforming it, connecting the circuit, and after the knob body (12) is released, it resets under the action of the diaphragm switch.

2. The KEYPAD for engineering machinery according to claim 1, characterized in that: There are four large springs (10), and the four large springs (10) cooperate with the four protrusions (30) on the pendulum body (9).

3. The KEYPAD for engineering machinery according to claim 1, characterized in that: The rotating bracket (21) is provided with an installation slot and one or more stops. The installation slot is provided with a tension cap (18), and the tension cap (18) is provided with a spring (19). The multi-directional printing plate component (15) is provided with an optical coupler, which is matched with the stop.

4. The KEYPAD for engineering machinery according to claim 3, characterized in that: The multi-directional printing plate component (15) is equipped with an LED flashing light, which is used in conjunction with an optical coupler.

5. The KEYPAD for engineering machinery according to claim 1, characterized in that: A silicone pad (23) is provided above the button printing plate component (5). The silicone pad (23) cooperates with the button switch housing (3). The silicone pad (23) is provided with silicone pins (31). The silicone pad (23) is connected to the button printing plate component (5) through the silicone pins (31). The housing (1) is provided with a support (27) that cooperates with the button printing plate component (5). The button printing plate component (5) is installed into the housing (1) through the support (27).

6. The KEYPAD for engineering machinery according to claim 1, characterized in that: The keypad printing plate component (5) is equipped with an LED light, which works in conjunction with a diaphragm switch.

7. The KEYPAD for engineering machinery according to claim 1, characterized in that: The outer shell (1) is provided with a breathable membrane (4).

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