Digital display meter with convenient operation

Abstract

This utility model belongs to the field of refrigeration equipment maintenance technology, specifically relating to a convenient digital display meter. Addressing the shortcomings of existing digital refrigerant meters that are inconvenient to operate, this utility model adopts the following technical solution: a convenient digital display meter, comprising: a housing; a display screen; a knob and button assembly, including a rotating pressing component and an operating component externally mounted on the housing and linked to the rotating pressing component; a control board; and a battery for powering the control board. The knob and button assembly is connected to the control board; when the rotating pressing component rotates, it sends a first voltage level to the control board; when the rotating pressing component is pressed, it sends a second voltage level to the control board. The control board controls the display screen based on the received first or second voltage level. The beneficial effects of this utility model are: selection and confirmation functions can be achieved through rotation and pressing of the operating component, respectively; rotation selection is more convenient and faster than scrolling up and down using buttons.

Description

Technical Field

[0001] This utility model belongs to the field of refrigeration equipment maintenance technology, specifically relating to a digital display meter that is easy to operate. Background Technology

[0002] Digital gauges are used during the maintenance of refrigeration equipment to display the pressure of the equipment. As HVAC system technology matures, the types of refrigerants become more diverse, and the accuracy requirements increase, mechanical valve gauges are increasingly unable to meet these demands. Intelligent valve gauges offer advantages such as high accuracy, abundant refrigerant data, and ease of data reading, leading to a growing demand for them.

[0003] Most smart valve gauges on the market operate via buttons (physical or touch buttons). Besides the power switch, they typically require multiple buttons (up, down, select, mode, setting, etc.), resulting in a large number of buttons. To accommodate different refrigerant types, smart valve gauges store dozens to hundreds of refrigerant data types. Selecting a specific type requires sequential scrolling up or down, making it difficult to quickly choose the desired refrigerant and function, and thus inconvenient to operate.

[0004] At the same time, the buttons also take up a lot of space, making the overall design less simple and aesthetically pleasing.

[0005] In addition, touchscreens are relatively expensive. Summary of the Invention

[0006] This invention addresses the inconvenience of operating existing digital displays by providing a more convenient digital display that uses a rotary knob instead of physical buttons. This allows for quick selection through rotation while reducing the number of buttons, thereby improving efficiency and user experience.

[0007] To achieve the above objectives, this utility model adopts the following technical solution: a user-friendly digital display, wherein the user-friendly digital display includes: shell; Display screen; The knob and button assembly includes a rotating pressing element and an operating element externally mounted on the housing and linked to the rotating pressing element; Control panel; The battery supplies power to the control board; The knob and button assembly and the display screen are both connected to the control board. When the rotating and pressing part rotates, it sends a first electrical signal to the control board. When the rotating and pressing part is pressed, it sends a second electrical signal to the control board. The control board controls the display screen based on the received first or second electrical signal.

[0008] This utility model discloses a conveniently operated digital display meter. Its knob and button assembly includes a rotating pressing component and an externally mounted operating component that is linked to the rotating pressing component. When the rotating pressing component rotates, it sends a first electrical signal to the control board; when the rotating pressing component is pressed, it sends a second electrical signal to the control board. The control board controls the display screen based on the received first or second electrical signal. Selection and confirmation functions can be achieved through rotation and pressing of the operating component, respectively. Rotation selection is more convenient and faster than using buttons to scroll up or down. The second electrical signal sent to the control board when the rotating pressing component is pressed can occur either after it is fully depressed or after it has reset. Multiple different electrical signals can be sent to the control board when the rotating pressing component rotates.

[0009] As an improvement, the operation slot is located on the left or right side of the housing, and a power switch is provided on the other side of the housing. The power switch is used to turn the power on and off and return to the interface. The first electrical signal sent by the knob and button assembly to the control board varies with the rotation angle and / or rotation direction of the rotating pressing part.

[0010] As an improvement, the outer casing has an operating groove that extends through the thickness direction, and the operating component is located in the operating groove.

[0011] As an improvement, a groove is formed in the bottom wall of the operating slot, and the operating component is partially located in the groove.

[0012] As an improvement, the knob and button assembly includes a rotary encoder, which includes the aforementioned rotary pressing element. The rotary pressing element rotates in both directions and enables up and down scrolling functions.

[0013] As an improvement, an anti-rotation groove is provided at the outer end of the rotating pressing part, and an anti-rotation rib is formed in the operating part located in the anti-rotation groove; the rotating pressing part and the operating part are tightly fitted together.

[0014] As an improvement, the housing includes a front housing and a rear housing. The front housing has an observation hole facing the display screen, and the digital refrigerant meter also includes a transparent lens that closes the observation hole.

[0015] As an improvement, the control board is fixed to the front cover, and the battery is fixed to the rear cover; The control panel has positioning holes, the knob and button assembly has positioning protrusions that mate with the positioning holes, and the back cover has positioning grooves that fit the knob and button assembly.

[0016] As an improvement, the display screen can be one or two distributed side by side; The observable interface of the display screen is circular; The outer shell includes a base shell and left and right protective shells located on the left and right sides of the base shell; The front and rear shells are molded as a single piece.

[0017] As an improvement, a power switch is provided on the housing, located on the left side of the housing; and / or, The casing has a charging port located on the upper side; and / or, The housing is equipped with a foldable hook located on the rear side of the housing; and / or, The digital refrigerant meter also includes a valve assembly located below the housing; and / or, Power sources include batteries and / or external connectors; and / or, The first electrical signal and / or the second electrical signal are level signals.

[0018] The advantages of this convenient digital display are as follows: the knob and button assembly includes a rotating pressing part and an operating part externally mounted on the housing and linked to the rotating pressing part. When the rotating pressing part rotates, it sends a first electrical signal to the control board. When the rotating pressing part is pressed, it sends a second electrical signal to the control board. The control board controls the display screen according to the received first or second electrical signal. The selection and confirmation functions can be realized by rotating and pressing the operating part, respectively. Rotation selection is more convenient and faster than flipping up and down with buttons. Attached Figure Description

[0019] Figure 1 and Figure 2 This is a structural diagram of the convenient digital display of Embodiment 1 of this utility model from different angles.

[0020] Figure 3 This is an exploded view of the structure of the convenient digital display table according to Embodiment 1 of this utility model.

[0021] Figure 4 This is a schematic diagram of the casing of the convenient digital display meter according to Embodiment 1 of this utility model.

[0022] Figure 5 This is a cross-sectional view of the casing of the conveniently operated digital display meter according to Embodiment 1 of this utility model.

[0023] Figure 6 This is an exploded view of the rotary button assembly of the convenient-to-operate digital display meter according to Embodiment 1 of this utility model.

[0024] In the diagram, 1 is the outer shell; 11 is the front shell; 111 is the front base shell; 112 is the front left protective shell; 113 is the front right protective shell; 114 is the observation hole; 12 is the rear shell; 121 is the rear base shell; 1211 is the positioning groove; 122 is the rear left protective shell; 123 is the rear right protective shell; 13 is the operating groove; and 14 is the groove. 2. Display screen; 3. Knob and button assembly; 31. Rotary encoder; 311. Rotary pressing component; 3111. Anti-rotation groove; 32. Operating component; 312. Positioning protrusion; 321. Round hole; 322. Anti-rotation rib; 4. Control panel; 41. Positioning holes; 5. Battery; 6. Clear lens; 7. Charging port; 8. Hooks; 9. Valve assembly; 10. Power switch. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be explained and described below. However, the following embodiments are only preferred embodiments of the present invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present invention.

[0026] See Figures 1 to 6 The present invention provides a user-friendly digital display, comprising: shell; Display screen; The knob and button assembly includes a rotating pressing element and an operating element externally mounted on the housing and linked to the rotating pressing element; Control panel; The battery supplies power to the control board; The knob and button assembly and the display screen are both connected to the control board. When the rotating and pressing part rotates, it sends a first electrical signal to the control board. When the rotating and pressing part is pressed, it sends a second electrical signal to the control board. The control board controls the display screen based on the received first or second electrical signal.

[0027] This utility model discloses a convenient digital display meter, whose knob and button assembly includes a rotating pressing component and an operating component externally mounted on the housing and linked to the rotating pressing component. When the rotating pressing component rotates, it sends a first electrical signal to the control board. When the rotating pressing component is pressed, it sends a second electrical signal to the control board. The control board controls the display screen based on the received first or second electrical signal. The selection and confirmation functions can be realized by rotating and pressing the operating component, respectively. Rotation selection is more convenient and faster than flipping up and down with buttons.

[0028] Example 1 See Figures 1 to 6 The convenient digital display table of Embodiment 1 of this utility model includes: Outer shell 1; Display screen 2; The knob and button assembly 3 includes a rotating pressing member 311 and an operating member 32 externally disposed in the housing 1 and linked to the rotating pressing member 311; Control panel 4; Battery 5 supplies power to control board 4; The knob and button assembly 3 and the display screen 2 are both connected to the control board 4. When the rotary pressing part 311 rotates, it sends a first electrical signal to the control board 4. When the rotary pressing part 311 is pressed, it sends a second electrical signal to the control board 4. The control board 4 controls the display screen 2 to display based on the received first or second electrical signal.

[0029] In this embodiment, both the first electrical signal and the first electrical signal are level signals.

[0030] In this embodiment, the outer casing 1 has a through-hole operating groove 13 in the thickness direction, and the operating member 32 is located in the operating groove 13. The operating member 32 has 360° anti-slip texture.

[0031] In this embodiment, the bottom wall of the operating groove 13 of the outer casing 1 also forms a groove 14, and a portion of the operating member 32 is located in the groove 14. The groove 14 ensures that there is no lateral gap between the operating member 32 and the outer casing 1 when viewed from the front, resulting in better overall integrity of the digital refrigerant gauge. The groove 14 also prevents the operating member 32 from being subjected to forces other than rotation and pressing, making it less likely for the operating member 32 to detach. The groove 14 also limits the movement of the operating member 32, preventing large swaying.

[0032] In this embodiment, the operating slot 13 is located on the right side of the housing 1. During operation, the user typically faces the display screen 2, and right-handed users are more common. In other embodiments, the operating slot 13 and the rotary button assembly can be located in other positions, such as on the left side for left-handed users.

[0033] In this embodiment, the knob and button assembly 3 includes a rotary encoder 31, which includes the aforementioned rotary pressing member 311. The rotary pressing member 311 rotates in both directions, enabling upward and downward scrolling functions. The rotary encoder 31 converts the angular displacement of the shaft (of the rotary pressing member 311) into a digital encoded signal. By detecting and processing these encoded signals, information such as the shaft's rotation angle, direction, and speed can be determined. The rotary encoder 31 can be commercially available or redesigned as needed. The first level signal sent by the knob and button assembly 3 to the control board 4 varies depending on the rotation angle and / or direction of the rotary pressing member 311.

[0034] In this embodiment, an anti-rotation groove 3111 is formed at the outer end of the rotating pressing member 311, and an anti-rotation rib 322 is formed in the anti-rotation groove 3111; the rotating pressing member 311 and the operating member 32 are tightly fitted together. The anti-rotation groove 3111 and the anti-rotation rib 322 cooperate to prevent relative rotation between the operating member 32 and the rotating pressing member 311. The tight fit between the rotating pressing member 311 and the operating member 32 facilitates installation and prevents the operating member 32 from axially (left-right direction) dislodging relative to the rotating pressing member 311.

[0035] In this embodiment, the end of the rotating pressing member 311 is cylindrical, the anti-rotation groove 3111 is formed at the cylindrical end, the operating member 32 has a circular hole 321, the anti-rotation rib 322 is formed in the circular hole 321, the cylindrical end of the rotating pressing member 311 is located in the circular hole 321 of the operating member 32, and the cylindrical end is tightly fitted with the circular hole 321.

[0036] In this embodiment, the outer casing 1 includes a front casing 11 and a rear casing 12. The front casing 11 has an observation hole 114 facing the display screen 2. The digital refrigerant gauge also includes a transparent lens 6 that closes the observation hole 114. The transparent lens 6 prevents the display screen 2 from being directly exposed and protects the display screen 2. The front casing 11 and the rear casing 12 are connected by a plurality of screws arranged in a ring.

[0037] In this embodiment, the outer shell 1 includes a base shell and left and right protective shells located on the left and right sides of the base shell. The front shell 11 includes a front base shell 111, a front left protective shell 112, and a front right protective shell 113, and the rear shell 12 includes a rear base shell 121, a rear left protective shell 122, and a rear right protective shell 123.

[0038] In this embodiment, the control board 4 is fixed on the front shell 11, and the battery 5 is fixed on the rear shell 12.

[0039] In this embodiment, a positioning hole 41 is provided on the control board 4, the knob and button assembly 3 has a positioning protrusion 312 that cooperates with the positioning hole 41, and a positioning groove 1211 that is adapted to the knob and button assembly 3 is formed on the back cover 12.

[0040] In this embodiment, there is one display screen 2. In other embodiments, there may be two displays distributed horizontally.

[0041] In this embodiment, the observable interface of the display screen 2 is circular. The observation hole 114 on the housing 1 is a circular hole 321. Both the transparent lens 6 and the display screen 2 can be square. In other embodiments, the observable interface of the display screen 2 can also be square (rectangular).

[0042] In this embodiment, a power switch 10 is provided on the outer casing 1. The power switch 10 is located on the left side of the outer casing 1 and is used to turn the power on and off and return to the interface.

[0043] In this embodiment, the outer casing 1 is provided with a charging port 7, which is located on the upper side of the outer casing 1.

[0044] In this embodiment, the outer shell 1 is provided with a foldable hook 8, which is located on the rear side of the outer shell 1. The hook 8 can swing and switch between the unfolded position and the folded position.

[0045] In this embodiment, the digital refrigerant meter also includes a valve assembly 9, which is located below the housing 1. The valve assembly 9 includes a pipe, a connector, and a sensor. The sensor is connected to the control board 4 and detects parameters in the pipe.

[0046] In this embodiment, during assembly, the control board 4, valve assembly 9, charging port 7, etc. can be fixed to the front shell 11, and the knob and button assembly 3 can be inserted. The battery 5, hook 8, etc. can be fixed to the rear shell 12. Then the front shell 11 and the rear shell 12 can be fixed, and finally the operating component 32 can be installed. The whole assembly process is relatively simple.

[0047] In other embodiments, after the battery 5 is provided, an external connector is also provided to connect to an external power source. When the battery 5 has insufficient power, it can be connected to an external power source to work.

[0048] In other embodiments, battery 5 may be omitted, and an external power source may be connected via an external connector.

[0049] In this embodiment, the digital display is a digital refrigerant meter.

[0050] In this embodiment, the operation process of the digital refrigerant meter is as follows: First, press the power switch 10 to turn on the digital refrigerant meter. The initial interface is displayed on the display screen 2, which usually displays parameters. When selection or setting is required, press the operating component 32 to activate the rotating pressing component 311. The rotary encoder 31 sends a second-level signal to the control board 4, and the display screen 2 switches from the initial interface to the secondary interface. The secondary interface usually displays options such as temperature, humidity, and refrigerant, and these options are set vertically. At this time, the operating component 32 can be rotated to rotate the rotating pressing component 311. The rotary encoder 31 sends a first-level signal to the control board 4, thereby selecting different options. After selecting the desired option, press the operating component 32. The rotary encoder 31 will send a second-level signal to the control board 4, and the display screen 2 will transition from the second-level interface to the third-level interface. For example, after selecting the refrigerant by rotating it, press the operating component 32 to enter the refrigerant selection interface. At this time, rotate the operating component 32 to select the specific refrigerant, and then press the operating component 32 to confirm the selection. After confirming the selection, the system will automatically return to the initial interface (or return to the previous level interface). In a non-initial interface, you can return to the previous level interface by pressing the power switch 10 (in the power-on state, the power switch 10 sends a third-level signal to the control board 4). Pressing the power switch 10 in the initial interface will turn off the digital refrigerant meter.

[0051] The beneficial effects of the convenient operation of the digital display in Embodiment 1 of this utility model are as follows: The knob and button assembly 3 includes a rotating pressing part 311 and an operating part 32 externally mounted on the outer shell 1 and linked with the rotating pressing part 311. When the rotating pressing part 311 rotates, it sends a first electrical signal to the control board 4. When the rotating pressing part 311 is pressed, it sends a second electrical signal to the control board 4. The control board 4 controls the display screen 2 according to the received first or second electrical signal. The selection and confirmation functions can be realized by rotating and pressing the operating part 32 respectively. Selecting and confirming by rotating the same operating part 32 is more convenient and faster than flipping up, flipping down and confirming with different buttons. There are no buttons to press on the front (facing the human body) (the power switch 10 and the operating part 32 are both on the side), making it simple and beautiful.

[0052] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Those skilled in the art should understand that the present invention includes, but is not limited to, the content described in the above specific embodiments. Any modifications that do not depart from the functional and structural principles of the present invention will be included within the scope of the claims.

Claims

1. A digital readout gauge for easy operation, characterised in that: The user-friendly digital display includes: Outer shell (1); Display screen (2); The knob and button assembly (3) includes a rotating pressing member (311) and an operating member (32) externally located in the housing (1) and linked to the rotating pressing member (311); Control panel (4); Power supply, providing power to the control board (4); The knob and button assembly (3) and the display screen (2) are both connected to the control board (4). When the rotating pressing part (311) rotates, it sends a first electrical signal to the control board (4). When the rotating pressing part (311) is pressed, it sends a second electrical signal to the control board (4). The control board (4) controls the display screen (2) according to the received first or second electrical signal.

2. The easy to operate digital readout of claim 1, wherein: The operation slot (13) is located on the left or right side of the housing (1), and the other side of the housing (1) is provided with a power switch (10). The power switch (10) is used to turn the power on and off and return the interface. The first electrical signal sent by the knob button assembly (3) to the control board (4) varies with the rotation angle and / or rotation direction of the rotating pressing part (311).

3. A digital readout gauge for easy operation according to claim 1 or 2, characterized in that: The outer casing (1) has an operating groove (13) that extends through the thickness direction, and the operating component (32) is located in the operating groove (13).

4. The easy-to-operate digital display meter according to claim 3, characterized in that: The bottom wall of the operating groove (13) has a groove (14) and the operating component (32) is partially located in the groove (14).

5. The easy to operate digital readout of claim 1 or 2, wherein: The knob and button assembly (3) includes a rotary encoder (31), which includes the aforementioned rotary pressing member (311). The rotary pressing member (311) rotates in both directions and performs up and down scrolling functions.

6. The easy-to-handle digital display meter according to claim 1 or 2, characterized in that: The outer end of the rotating pressing member (311) is provided with an anti-rotation groove (3111), and the operating member (32) forms an anti-rotation rib (322) located in the anti-rotation groove (3111); the rotating pressing member (311) and the operating member (32) are tightly fitted together.

7. The convenient digital display according to claim 1, characterized in that: The outer casing (1) includes a front casing (11) and a rear casing (12). An observation hole (114) facing the display screen (2) is opened on the front casing (11). The digital refrigerant meter also includes a transparent lens (6) that closes the observation hole (114).

8. The convenient digital display according to claim 7, characterized in that: The control board (4) is fixed on the front shell (11), and the battery (5) is fixed on the rear shell (12); A positioning hole (41) is provided on the control panel (4), and the knob and button assembly (3) has a positioning protrusion (312) that cooperates with the positioning hole (41). A positioning groove (1211) that is adapted to the knob and button assembly (3) is formed on the back cover (12).

9. The convenient digital display according to claim 7, characterized in that: The display screen (2) can be one or two distributed side by side; The observable interface of the display screen (2) is circular; The outer shell (1) includes a base shell and left and right protective shells located on the left and right sides of the base shell; The front shell (11) and the rear shell (12) are integrally formed.

10. The convenient digital display according to claim 1 or 2, characterized in that: A power switch (10) is provided on the outer casing (1), the power switch (10) is located on the left side of the outer casing (1), and the operating element (32) is located on the right side of the outer casing (1); and / or, The outer casing (1) is provided with a charging port (7), which is located on the upper side of the outer casing (1); and / or, The outer casing (1) is provided with a foldable hook (8), the hook (8) being located on the rear side of the outer casing (1); and / or, The digital refrigerant meter also includes a valve assembly (9), which is located below the housing (1); and / or, The power source includes a battery (5) and / or an external connector; and / or, The first electrical signal and / or the second electrical signal are level signals.

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