Digital pressure gauge with easy assembly

Abstract

The application discloses a digital pressure gauge convenient to assemble, which comprises a shell, a face film, a window and an operation plate arranged in the shell in sequence, a display screen and a plurality of buttons are arranged on the side of the operation plate close to the window, the window is a transparent structure formed through injection molding and is provided with a limiting frame or a limiting hole corresponding to the display screen, a plurality of function holes corresponding to the buttons are arranged in the window, the buttons penetrate through the function holes and protrude from the window, an observation opening corresponding to the display screen and an identification corresponding to the buttons are arranged in the face film, and a limiting groove corresponding to the face film is recessed on the side of the window close to the face film. The application has the advantages of simple structure, transparent structure of the window formed through injection molding, convenient positioning and installation of the face film pasted in the limiting groove of the window and protection of the face film.

Description

Technical Field

[0001] This application relates to the field of high-performance, intelligent instruments and meters, and in particular to a digital pressure gauge that is easy to assemble. Background Technology

[0002] Digital pressure gauges, also known as digital pressure gauges, are high-precision pressure gauges that integrate pressure measurement and display, featuring built-in pressure sensors. They are characterized by vibration resistance, high display accuracy, high stability, zeroing capability, and automatic standby. However, existing digital pressure gauges require the membrane to be directly adhered to the surface of the viewing window during installation. Since both the viewing window and the membrane are circular, there is no positioning mechanism, requiring installation based solely on experience and visual inspection to ensure proper alignment. Furthermore, the gauge cover secures the viewing window with abutment, which may damage the membrane surface during rotational installation. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this invention is to provide a digital pressure gauge that is easy to assemble, so as to overcome the shortcomings of the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] This application discloses a digital pressure gauge that is easy to assemble, including a housing and a faceplate, a window, and an operation panel sequentially disposed within the housing. The operation panel has a display screen and several buttons on the side near the window. The window is a transparent structure integrally formed by injection molding and has a limiting frame or limiting hole corresponding to the display screen. The window has several functional holes corresponding to the buttons, and the buttons pass through the functional holes and protrude from the window. The faceplate has an observation port corresponding to the display screen and a label corresponding to the buttons. The side of the window near the faceplate has a limiting groove corresponding to the faceplate.

[0006] Furthermore, in the aforementioned digital pressure gauge that is easy to assemble, the side wall of the limiting groove is recessed with several positioning grooves, and the outer wall of the mask is protruded with several positioning ears corresponding to the positioning grooves.

[0007] Furthermore, in the aforementioned easily assembled digital pressure gauge, the housing includes a stainless steel outer shell and a gauge cover. The outer shell has a cylindrical structure and an open mounting cavity is recessed on one end face. The outer shell has wiring holes and connectors on its circumferential surface. The gauge cover has an annular structure and is connected to the open end of the outer shell by a threaded structure or a snap-fit ​​structure. The faceplate is located on the side close to the gauge cover.

[0008] Furthermore, in the aforementioned digital pressure gauge that is easy to assemble, the opening end of the outer casing has a protruding positioning pin, the circumferential surface of the window has a recessed locking groove corresponding to the positioning pin, and the inner side of the end of the gauge cover away from the outer casing has a pressing boss corresponding to the window.

[0009] Furthermore, in the aforementioned easily assembled digital pressure gauge, the length of the locating pin is less than the thickness of the viewing window.

[0010] Furthermore, in the aforementioned easily assembled digital pressure gauge, the open end of the outer shell has an annular spacer protruding from it, the outer circumferential surface of the spacer protruding from it has several fan-shaped connecting protrusions, the circumferential surface of the window has anti-sway protrusions that are respectively aligned with the connecting protrusions, and the inner ring of the gauge cover is provided with a buckle corresponding to the connecting protrusions.

[0011] Compared with the prior art, the advantages of this utility model are: the digital pressure gauge that is easy to assemble has a simple structure, the cover is a transparent structure formed by injection molding, and the installation position of the mask is quickly positioned by the cooperation of the positioning ear and the positioning groove, which facilitates positioning and installation. The mask is pasted in the limiting groove of the cover, which avoids scratching or pulling the mask during the installation of the cover. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 The diagram shown is an exploded view of a digital pressure gauge that is easy to assemble, according to a specific embodiment of the present invention. Detailed Implementation

[0014] The technical solutions of the present utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model 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 this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0016] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 utility model based on the specific circumstances.

[0017] For example, see Figure 1 As shown, a digital pressure gauge that is easy to assemble includes a housing and a faceplate 1, a viewing window 2, and an operation panel 3 arranged sequentially within the housing. The operation panel 3 has a display screen 31 and several buttons 32 on the side near the viewing window 2. The viewing window 2 is a transparent structure integrally formed by injection molding and has a limiting frame or limiting hole 21 corresponding to the display screen 31. Several functional holes 22 corresponding to the buttons 32 are provided inside the viewing window 2. The buttons 32 pass through the functional holes 22 and protrude from the viewing window 2. The faceplate 1 has an observation port 11 corresponding to the display screen 31 and a mark 12 corresponding to the buttons 32. The side of the viewing window 2 near the faceplate 1 is recessed with a limiting groove 23 corresponding to the faceplate 1.

[0018] In this technical solution, the control panel is a circuit board or similar structure, fixed to the battery box inside the housing using conventional bolts. The faceplate is pasted onto the viewing window and installed as a whole. The viewing window is made of conventional acrylic glass or similar materials, integrally molded using injection molding processes. A transparent limiting frame protrudes from the side near the display screen. During installation, the limiting frame is engaged with the periphery of the display screen, improving the positioning accuracy between the viewing window and the display screen. Depending on the relative position between the viewing window and the display screen, the limiting frame can be replaced by limiting holes to avoid interference between the viewing window and the display screen. The shape and dimensions of the limiting holes correspond to the outline of the display screen. The viewing port of the faceplate is made transparent and integrated with... The display screen is used to observe the pressure gauge readings. Several through-holes are also provided within the window, serving as functional holes corresponding to the control panel buttons. The button protrudes from the window near the mask, ensuring it can be pressed from one side of the mask to adjust pressure gauge settings. The mask is printed with text, letters, and symbols to indicate the button's function, with a protruding portion to accommodate the button. A limiting groove is recessed on the outer end face of the window near the mask, allowing the mask to be adhered to the groove for radial positioning. The recessed position of the mask prevents contact with the gauge cover, avoiding scratches or tearing.

[0019] For example, see Figure 1 As shown, the side wall of the limiting groove 23 is recessed with a number of positioning grooves 24, and the outer wall of the mask 1 is protruded with a number of positioning ears 13 corresponding to the positioning grooves 24.

[0020] In this technical solution, the side wall of the limiting groove is recessed with two symmetrically arranged positioning grooves, and the circumferential surface of the mask protrudes with two positioning ears. When the mask is attached to the viewing window, the two positioning ears are aligned with the corresponding positioning grooves to achieve circumferential positioning of the mask and the viewing window. Combined with the radial positioning of the limiting groove, it facilitates the quick positioning and installation of the mask.

[0021] For example, see Figure 1 As shown, the housing includes a stainless steel outer shell 4 and a cover 5. The outer shell 4 has a cylindrical structure and an open mounting cavity on one end face. The outer shell 4 has wiring holes and connectors on its circumferential surface for direct connection to pressure sensors, etc., which facilitates connection. The cover 5 has an annular structure and is connected to the open end of the outer shell 4 by a threaded structure or a snap-fit ​​structure. The faceplate 1 is located on the side near the cover 5.

[0022] In this technical solution, the outer casing and watch cover can directly utilize existing structures. A battery box and other structures can also be installed inside the outer casing. The control panel is fixed to the mounting cavity of the outer casing by conventional bolts, etc. The face mask and viewing window are installed as a whole on the outside of the control panel. Then the watch cover is installed on the opening end of the outer casing, and the face mask and viewing window are fixed.

[0023] For example, see Figure 1As shown, a positioning pin 41 protrudes from the open end of the outer casing 4, and a locking groove 25 corresponding to the positioning pin 41 is recessed on the circumferential surface of the window 2. A pressing boss corresponding to the window 2 protrudes from the inner side of the end of the watch cover 5 away from the outer casing 4.

[0024] In this technical solution, the outer shell has a protruding positioning pin, which works with the locking groove recessed on the circumference of the window to fix the window. During assembly, the locking groove of the window can be directly locked into the positioning pin of the outer shell, which avoids the window from being misaligned due to rotation, and improves the yield and efficiency of assembly. The pressing boss of the cover has a ring structure and presses against the outer periphery of the outer side of the window to fix the window.

[0025] For example, see Figure 1 As shown, the length of the positioning pin 41 is less than the thickness of the window 2.

[0026] In this technical solution, the thickness of the window is greater than the length of the positioning pin. After the window is installed, the watch cover directly acts on the window, and the positioning pin does not interfere with the fixing of the watch cover. The positioning pin and the locking groove are both within the range covered by the outer cover pressing boss. After the outer cover is installed, the presence of the positioning pin and the locking groove can be hidden, thus improving the appearance.

[0027] For example, see Figure 1 As shown, the opening end of the outer casing 4 has an annular spacer protrusion, and the outer side of the circumferential surface of the spacer protrudes several fan-shaped connecting protrusions. The circumferential surface of the window 2 has anti-shake protrusions 26 that are respectively aligned with the connecting protrusions. The inner ring of the cover 5 is provided with buckles that correspond to the connecting protrusions and the anti-shake protrusions 26.

[0028] In this technical solution, there are four connecting bosses and four anti-sway bosses, and the corresponding central angles are all 60°. After the window is installed, the anti-sway bosses and the corresponding connecting bosses are perfectly aligned, with a 30° interval between adjacent connecting bosses and adjacent anti-sway bosses. The inner ring of the watch cover has four equally spaced circular arrays of buckles, where the central angle of the buckle is less than 30° to ensure that they can be inserted into the gaps between adjacent connecting bosses and adjacent anti-sway bosses. After the buckles are inserted into the gaps between adjacent connecting bosses and adjacent anti-sway bosses, the watch cover is rotated, and the buckles can be inserted into the back of the connecting bosses to complete the fixing of the watch cover. The end of the buckle near the outer shell first snaps into the inner side of the connecting boss. During the rotation of the watch cover, the end of the buckle away from the outer shell gradually contacts the connecting boss until the watch cover is completely fixed. After the watch cover is fixed, the outer circular surface of the anti-sway boss abuts against the inner wall of the watch cover to prevent the window from shaking.

[0029] In summary, this easy-to-assemble digital pressure gauge has a simple structure. The gauge cover is a transparent structure formed by injection molding. The positioning ears and positioning grooves work together to quickly position the mask for easy installation. The mask is pasted into the limiting groove of the gauge cover, preventing the mask from being scratched or pulled during the installation of the gauge cover.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The above description is only a specific embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A digital pressure gauge that is easy to assemble, characterized in that, The device includes a housing and a face mask, a viewing window, and an operation panel sequentially disposed within the housing. The operation panel has a display screen and several buttons on the side near the viewing window. The viewing window is a transparent structure integrally molded by injection molding and has a limiting frame or limiting hole corresponding to the display screen. The viewing window has several functional holes corresponding to the buttons, and the buttons pass through the functional holes and protrude from the viewing window. The face mask has an observation port corresponding to the display screen and a label corresponding to the buttons. The side of the viewing window near the face mask has a limiting groove corresponding to the face mask.

2. The easily assembled digital pressure gauge according to claim 1, characterized in that: The side wall of the limiting groove is recessed with several positioning grooves, and the outer wall of the mask is protruded with several positioning ears corresponding to the positioning grooves.

3. The easily assembled digital pressure gauge according to claim 1, characterized in that: The housing includes a stainless steel outer shell and a watch cover. The outer shell has a cylindrical structure and an open mounting cavity on one end face. The outer shell has wiring holes and connectors on its circumferential surface. The watch cover has an annular structure and is connected to the open end of the outer shell by a threaded structure or a snap-fit ​​structure. The face mask is located on the side close to the watch cover.

4. The easily assembled digital pressure gauge according to claim 3, characterized in that: The opening end of the outer casing has a protruding positioning pin, the circumferential surface of the window has a recessed locking groove corresponding to the positioning pin, and the inner side of the end of the watch cover away from the outer casing has a pressing boss corresponding to the window.

5. The easily assembled digital pressure gauge according to claim 4, characterized in that: The length of the positioning pin is less than the thickness of the window.

6. The easily assembled digital pressure gauge according to claim 3, characterized in that: The opening end of the outer casing has an annular spacer protruding from it, and several annular connecting protrusions protrude from the outer side of the circumferential surface of the spacer protruding from it. The circumferential surface of the window has anti-shake protrusions that are respectively aligned with the connecting protrusions. The inner ring of the watch cover is provided with a buckle corresponding to the connecting protrusions.

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