Tea bar machine and operation panel assembly thereof

Abstract

The utility model relates to the technical field of tea bar machines, in particular to a tea bar machine and an operation panel assembly thereof, and aims to solve the problem that a spring on a circuit board in an operation panel assembly of an existing tea bar machine is prone to deflection, so that the sensitivity of touch operation is affected. In order to achieve the purpose, the operation panel assembly of the tea bar machine comprises a shell and a circuit board arranged in the shell, the shell comprises a front panel, a touch panel is arranged on the front panel and made of insulating materials, and a plate-shaped touch induction disc right opposite to the touch panel is fixed to the side face, facing the front panel, of the circuit board. The plate-shaped touch sensing disc is attached to the touch panel. Thus, when the circuit board and the front panel of the shell are assembled in place, the plate-shaped touch induction disc on the circuit board can be attached to the touch panel on the front panel, the assembly precision of the plate-shaped touch induction disc and the touch panel is guaranteed, and touch operation has high sensitivity.

Description

Technical Field

[0001] The utility model relates to the technical field of tea bar machines, and particularly provides a tea bar machine and an operation panel assembly thereof. Background Art

[0002] With the continuous improvement of people's living standards, tea bar machines have become essential household appliances in people's lives.

[0003] At present, an operation panel assembly is configured on the tea bar machines in the market. Users can input instructions through the operation area on the operation panel assembly so that the tea bar machine can perform corresponding operations. Generally, the operation panel assembly includes a housing and a circuit board installed in the housing. An operation area is provided on the housing, and a spring is provided on the circuit board. One end of the spring is electrically connected to the induction chip on the circuit board, and the other end of the spring abuts against the inner surface of the operation area on the housing. When the user touches the operation area on the housing, the induction chip can sense the corresponding change in the electrical signal, and then control the tea bar machine to perform corresponding operations. However, during the installation process of each part of the operation panel assembly, the spring on the circuit board is prone to skew, and the other end of the spring cannot accurately abut against the inner surface of the operation area on the housing, affecting the sensitivity of the touch operation.

[0004] Therefore, a new technical solution is needed in this field to solve the above problems. Content of the Utility Model

[0005] The utility model aims to solve the above technical problems, that is, to solve the problem that the spring on the circuit board in the existing operation panel assembly of the tea bar machine is prone to skew, affecting the sensitivity of the touch operation.

[0006] In a first aspect, the utility model provides an operation panel assembly of a tea bar machine. The operation panel assembly includes a housing and a circuit board disposed in the housing. The housing includes a front panel, and a touch panel is provided on the front panel. The touch panel is made of an insulating material. A plate-shaped touch induction disk facing the touch panel is fixed on the side of the circuit board facing the front panel, and the plate-shaped touch induction disk is attached to the touch panel.

[0007] In the preferred technical solution of the above operation panel assembly, the plate-shaped touch induction disk includes a conductive plate member fixed to the circuit board, and the side of the conductive plate member facing the touch panel is attached to the touch panel.

[0008] In the preferred technical solution of the above operation panel assembly, a light-emitting element is provided on the side of the circuit board facing the front panel, at least a part of the touch panel is of a light-transmitting structure, the plate-shaped touch induction disk includes a conductive plate member and a light guide plate, the conductive plate member is fixed to the circuit board, the surface of the conductive plate member facing the touch panel is attached to the first side surface of the light guide plate, the light-emitting element is attached to the first side surface of the light guide plate, and the second side surface of the light guide plate is attached to the touch panel and covers the light-transmitting structure.

[0009] In the preferred technical solution of the above operation panel assembly, the number of the light-emitting elements is multiple, and the light-emitting elements are distributed in the peripheral area of the conductive plate member.

[0010] In the preferred technical solution of the above operation panel assembly, the touch panel includes a substrate made of a transparent material and a film with a preset light-transmitting pattern covering one side of the substrate.

[0011] In the preferred technical solution of the above operation panel assembly, the conductive plate member is formed by the exposed copper foil on the circuit board.

[0012] In the preferred technical solution of the above operation panel assembly, an elastic pad is further provided between the circuit board and the front panel. The two side surfaces of the elastic pad are respectively attached to the circuit board and the front panel. An avoidance hole is formed in the area of the elastic pad opposite to the light guide plate, and the light guide plate passes through the avoidance hole.

[0013] In the preferred technical solution of the above operation panel assembly, a clamping block is provided on the back surface of the front panel, and the circuit board is fixed to the front panel through the clamping block.

[0014] In the preferred technical solution of the above operation panel assembly, the housing includes a rear cover plate. The rear cover plate is fixedly connected to the front panel, and at least a part of the rear cover plate presses on the side surface of the circuit board facing the rear cover.

[0015] In the case of adopting the above technical solution, the operation panel assembly of the tea bar machine includes a housing and a circuit board arranged in the housing. The housing includes a front panel, a touch panel is arranged on the front panel, the touch panel is made of an insulating material, a plate-shaped touch induction disk facing the touch panel is fixed on the side surface of the circuit board facing the front panel, and the plate-shaped touch induction disk is attached to the touch panel.

[0016] With such a setting, when assembling various parts of the operation panel assembly, the circuit board is assembled in place with the front panel of the housing, and the plate-shaped touch sensing disc on the circuit board can be attached to the touch panel on the front panel, ensuring the assembly accuracy between the plate-shaped touch sensing disc and the touch panel and enabling the touch operation to have high sensitivity. In addition, compared with the existing operation panel assembly, the operation panel assembly of the present utility model is thinner, facilitating the installation of the operation panel assembly on the tea bar machine.

[0017] Preferably, a light-emitting element is provided on the side of the circuit board facing the front panel, at least a part of the touch panel is of a light-transmitting structure, the plate-shaped touch sensing disc includes a conductive plate member and a light guide plate, the conductive plate member is fixed to the circuit board, the surface of the conductive plate member facing the touch panel is attached to the first side surface of the light guide plate, the light-emitting element is attached to the first side surface of the light guide plate, and the second side surface of the light guide plate is attached to the touch panel and covers the light-transmitting structure.

[0018] With such a setting, when working, the light-emitting element on the circuit board emits light, and the light is conducted through the light guide plate to the light-transmitting structure and exits from the light-transmitting structure, enabling the user to clearly see the position of the touch panel in a relatively dark environment and facilitating the user to touch the corresponding touch panel to make the tea bar machine perform corresponding operations.

[0019] Preferably, the number of light-emitting elements is multiple, and the light-emitting elements are distributed in the peripheral area of the conductive plate member.

[0020] With such a setting, the brightness of the touch panel can be ensured, and the installation of the light-emitting element is facilitated.

[0021] Preferably, the touch panel includes a substrate made of a transparent material and a film with a preset light-transmitting pattern covering one side of the substrate.

[0022] With such a setting, the structure of the touch panel is relatively simple. For touch panels with different functions, it is only necessary to set the film of the touch panel to a film with different preset light-transmitting patterns, and the manufacturing process is relatively simple and the manufacturing cost is relatively low.

[0023] Preferably, the conductive plate member is formed by the copper foil exposed on the circuit board.

[0024] With such a setting, there is no need to separately manufacture the conductive plate member and then assemble and fix it to the circuit board. It is only necessary to expose the copper foil in this area during the manufacturing process of the circuit board, further simplifying the manufacturing process and reducing the manufacturing cost.

[0025] Preferably, an elastic pad is further provided between the circuit board and the front panel. The two side surfaces of the elastic pad are respectively attached to the circuit board and the front panel, and an avoidance hole is formed in the area of the elastic pad opposite to the light guide plate, and the light guide plate passes through the avoidance hole.

[0026] With such a setting, the gap between the circuit board and the front panel can be eliminated, ensuring the installation stability of the circuit board and achieving a certain dust-proof and sealing effect.

[0027] Preferably, a clamping block is provided on the back surface of the front panel, and the circuit board is fixed to the front panel through the clamping block.

[0028] With such a setting, the circuit board can be conveniently fixed to the front panel, facilitating the assembly and fixation of the circuit board and the front panel and simplifying the assembly process.

[0029] Preferably, the housing includes a rear cover plate, the rear cover plate is fixedly connected to the front panel, and at least a part of the rear cover plate presses on the side surface of the circuit board facing the rear cover.

[0030] With such a setting, the installation stability of the circuit board can be further improved.

[0031] In a second aspect, the present utility model further provides a tea bar machine, and the tea bar machine includes the operation panel assembly of the tea bar machine according to any one of the above technical solutions.

[0032] It should be noted that the tea bar machine has all the technical effects of the operation panel assembly of the tea bar machine according to any one of the above technical solutions, which will not be elaborated herein. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following describes the preferred embodiments of the present utility model with reference to the drawings, in which:

[0034] Figure 1 is a front view of the operation panel assembly of a tea bar machine according to an embodiment of the present utility model;

[0035] Figure 2 is Figure 1 a cross-sectional view taken along the A-A plane in

[0036] Figure 3 is Figure 2 an enlarged view of a partial area B in

[0037] Figure 4 is a schematic structural diagram of the operation panel assembly of a tea bar machine according to an embodiment of the present utility model as seen obliquely from the rear side;

[0038] Figure 5 is Figure 4 a schematic structural diagram of the operation panel assembly of a tea bar machine according to an embodiment of the present utility model with the rear cover plate removed in the orientation shown;

[0039] Figure 6 is an exploded view of the operation panel assembly of a tea bar machine according to an embodiment of the present utility model.

[0040] LIST OF REFERENCE NUMERALS:

[0041] 1. Front panel; 11. First substrate; 111. Touch panel; 112. Display window; 12. First side plate; 13. Limiting plate; 14. Clamping block; 15. Connecting column; 2. Rear cover plate; 21. Second substrate; 22. Second side plate; 23. Support column; 24. Support plate; 25. Reinforcing plate; 3. Circuit board; 31. Conductive plate member; 32. Light guide plate; 33. Light emitting diode; 34. Digital tube; 35. Induction chip; 4. Elastic pad; 41. First avoidance hole; 42. Second avoidance hole. Detailed implementation mode

[0042] First of all, those skilled in the art should understand that the implementation modes described below are only used to explain the technical principle of the present utility model, and are not intended to limit the protection scope of the present utility model.

[0043] It should be noted that in the description of the utility model, the terms indicating the direction or positional relationship such as "left", "right", "up", "down", etc. are based on the direction or positional relationship shown in the drawings. This is only for the convenience of description, rather than indicating or implying that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0044] In addition, it should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a direct connection or an indirect connection. For those skilled in the art, the specific meaning of the above terms in the present utility model can be understood according to specific situations.

[0045] Based on the problem that the spring on the circuit board in the existing operation panel assembly of the tea bar machine mentioned in the background technology is prone to skew, which affects the sensitivity of touch operation, the present utility model provides an operation panel assembly of a tea bar machine. The operation panel assembly includes a housing and a circuit board arranged in the housing. The housing includes a front panel, and a touch panel is arranged on the front panel. The touch panel is made of an insulating material. A plate-shaped touch induction disk facing the touch panel is fixed on the side of the circuit board facing the front panel, and the plate-shaped touch induction disk is attached to the touch panel.

[0046] Through such a configuration, when the various parts of the operation panel assembly are assembled, the circuit board and the front panel of the housing are assembled in place, and the plate-shaped touch sensing disk on the circuit board can be attached to the touch panel on the front panel, thereby ensuring the assembly accuracy of the plate-shaped touch sensing disk and the touch panel, so that the touch operation has a higher sensitivity. In addition, compared with the existing operation panel assembly, the operation panel assembly of the utility model is thinner, which is convenient for installation of the operation panel assembly on the tea bar machine.

[0047] Refer to the following Figures 1 to 6 The operating panel assembly of the tea bar machine of the utility model is introduced in detail. Figure 1 It is a front view of an operating panel assembly of a tea bar machine according to an embodiment of the utility model; Figure 2 is along Figure 1 Sectional view of the AA plane; Figure 3 yes Figure 2 A magnified view of the part B in the middle; Figure 4 This is a schematic diagram of the structure of the operation panel assembly of a tea bar machine according to an embodiment of the utility model, viewed from the rear side; Figure 5 The operating panel assembly of the tea bar machine of the utility model is Figure 4 The structural diagram of the position shown is without the rear cover; Figure 6 It is an exploded view of the operating panel assembly of a tea bar machine according to one embodiment of the utility model.

[0048] like Figures 1 to 6 Shown and referenced Figure 2 In the orientation shown, the operation panel assembly of the tea bar machine includes a shell and a circuit board 3 arranged in the shell. The shell includes a front panel 1 and a rear cover 2. The front panel 1 includes a first substrate 11, and an annular first side plate 12 extends downward from the lower surface of the first substrate 11 near the edge. The lower surface of the first substrate 11 has a three-sided surrounding limit plate 13 extending downward within the area surrounded by the annular first side plate 12. The limit plate 13, a part of the first side plate 12, and a part of the first substrate 11 form a mounting groove that matches the shape of the circuit board 3. The lower surface of the first substrate 11 located in the mounting groove has a connecting column 15 extending downward at two diagonals. As shown Figure 5 Shown and referenced Figure 5 In the orientation shown, a clamping block 14 is formed on the left and right parts of the limiting plate 13, respectively, two clamping blocks 14 are formed on the front part of the limiting plate 13, and two clamping blocks 14 are formed on the rear part of the first side plate 12. The circuit board 3 is installed in the installation groove, and the two connecting columns 15 pass through the two through holes at corresponding positions on the circuit board 3. The eight clamping blocks 14 clamp the edges of the circuit board 3.

[0049] like Figure 2 , Figure 4 and Figure 6 Shown and referencedFigure 2 In the orientation shown, the rear cover plate 2 includes a second substrate 21. Second side plates 22 extend upward from the four peripheral edges of the second substrate 21. Two support columns 23 extending upward are formed on the upper surface of the second substrate 21. A support plate 24 extending upward is formed at a position on the upper surface of the second substrate 21 near the inner side of the second side plate 22. A plurality of reinforcing plates 25 extending upward are further formed on the upper surface of the second substrate 21.

[0050] Referring to Figure 2 , in the installed state, the second side plates 22 are sleeved outside the limiting plates 13. The upper ends of the two support columns 23 abut against the lower surface of the circuit board 3. The support plate 24 is embedded inside the limiting plates 13, and the upper edge of the support plate 24 abuts against the lower surface of the circuit board 3. The second substrate 21 is fixedly connected to the connecting columns 15 by screws.

[0051] As Figure 1 , Figure 2 and Figure 6 shown and referring to Figure 2 the orientation shown, on the first substrate 11 of the front panel 1, three touch panels 111 arranged from left to right and penetrating through the first substrate 11 in the thickness direction are respectively formed in the left and right side regions. A display window 112 is formed in the middle region of the first substrate 11 of the front panel 1. The display window 112 is a light-transmitting plate penetrating through the first substrate 11 in the thickness direction. The touch panel 111 includes a substrate (not shown in the figure) made of a transparent material and a thin film (not shown in the figure) with a preset light-transmitting pattern covering the lower surface of the substrate. Both the substrate and the thin film are made of insulating materials, such as made of polymethyl methacrylate, polycarbonate resin, polystyrene or other suitable materials. On the upper surface of the circuit board 3, three plate-shaped touch sensing discs arranged from left to right are provided in the left side region. On the upper surface of the circuit board 3, three plate-shaped touch sensing discs arranged from left to right are provided in the right side region. The plate-shaped touch sensing discs correspond to the touch panels 111 one by one. Each plate-shaped touch sensing disc includes a conductive plate member 31 and a light guide plate 32. The conductive plate member 31 is formed by the exposed copper foil on the circuit board 3. On the upper surface of the circuit board 3, four light-emitting diodes 33 are respectively formed at both ends of each conductive plate member 31. The lower side surface of the light guide plate 32 is attached to the upper surface of the conductive plate member 31. The light-emitting diodes 33 are in contact with the light guide plate 32. The upper surface of the light guide plate 32 is attached to the thin film of the touch panel 111. On the upper surface of the circuit board 3, a digital tube 34 facing the display window 112 is provided in the middle region. An induction chip 35 is provided on the lower surface of the circuit board 3. The conductive plate member 31 is electrically connected to the induction chip 35.

[0052] As Figure 2 , Figure 3 and Figure 6As shown in the figure, an elastic pad 4 is further provided between the circuit board 3 and the first substrate 11. The shape of the elastic pad 4 is adapted to the shape of the mounting groove on the lower surface of the first substrate 11 for mounting the circuit board 3. The elastic pad 4 is formed with first avoidance holes 41 corresponding to the light guide plates 32 one by one and second avoidance holes 42 corresponding to the display window 112. The elastic pad 4 can be made of elastic materials such as rubber, silica gel, and foam. The lower surface of the elastic pad 4 is attached to the upper surface of the circuit board 3, and the upper surface of the elastic pad 4 is attached to the lower surface of the first substrate 11. The light guide plate 32 passes through the first avoidance hole 41, and the digital tube 34 is located in the second avoidance hole 42.

[0053] Referring to Figure 6 , when assembling the operation panel assembly, first bond the light guide plate 32 to the upper surface of the conductive plate member 31 with transparent glue, sleeved the first avoidance hole 41 of the elastic pad 4 on the light guide plate 32, then install the circuit board 3 into the mounting groove on the lower surface of the first substrate 11, and the clamping block 14 clamps the edge of the circuit board 3. After that, snap the rear cover plate 2 onto the front panel 1, and fixedly connect the rear cover plate 2 and the connecting column 15 on the first substrate 11 with screws.

[0054] Through such a setting, during the process of mounting and fixing the circuit board 3 to the front panel 1, the plate-shaped touch sensing disk can accurately align with the touch panel 111 and closely adhere to the inner side surface of the touch panel 111, improving the assembly accuracy, reducing the assembly difficulty, and ensuring the sensitivity of touch operations. In addition, compared with the existing operation panel assemblies, the operation panel assembly of the present utility model is thinner, facilitating the installation of the operation panel assembly on the tea table machine.

[0055] The touch panel 111 includes a substrate made of a transparent material (not shown in the figure) and a thin film with a preset light-transmitting pattern covering the lower surface of the substrate. Each plate-shaped touch sensing disk includes a conductive plate member 31 and a light guide plate 32. Four light-emitting diodes 33 are respectively formed at both ends of each conductive plate member 31 on the upper surface of the circuit board 3. The lower side surface of the light guide plate 32 is attached to the upper surface of the conductive plate member 31, and the light-emitting diodes 33 are in contact with the light guide plate 32. The upper surface of the light guide plate 32 is attached to the thin film of the touch panel 111. In this way, when working, the light-emitting diodes 33 on the circuit board emit light, and the light is conducted through the light guide plate 32 to the light-transmitting area of the thin film and exits through the transparent material substrate, enabling the user to clearly see the position of the touch panel 111 and know the functions of the touch panel 111 in a relatively dark environment, facilitating the user to touch the corresponding touch panel 111 to make the tea table machine perform corresponding operations.

[0056] The conductive plate member 31 is formed by the exposed copper foil on the circuit board 3. In this way, there is no need to separately manufacture the conductive plate member 31 and then assemble and fix the conductive plate member 31 to the circuit board 3. It only needs to expose the copper foil in this area during the manufacturing process of the circuit board 3, which further simplifies the manufacturing process and reduces the manufacturing cost.

[0057] An elastic pad 4 is arranged between the circuit board 3 and the first substrate 11. The elastic pad 4 is formed with first avoidance holes 41 corresponding to the light guide plates 32 one by one and a second avoidance hole 42 corresponding to the display window 113. The lower surface of the elastic pad 4 is attached to the upper surface of the circuit board 3, and the upper surface of the elastic pad 4 is attached to the lower surface of the first substrate 11. In this way, the gap between the circuit board 3 and the front panel 1 can be eliminated, the installation stability of the circuit board 3 can be ensured, and a certain dust-proof and sealing effect can be achieved.

[0058] It should be noted that the conductive plate member 31 is formed by the exposed copper foil on the circuit board 3, which is only a relatively preferred setting method. In practical applications, it can be adjusted. For example, the conductive plate member 31 is a separately manufactured metal plate, and the metal plate is welded to the circuit board 3 by soldering. In addition, arranging the elastic pad 4 between the circuit board 3 and the first substrate 11 is also a preferred setting method. In practical applications, it can be adjusted. For example, in a feasible embodiment, the elastic pad 4 is not arranged between the circuit board 3 and the first substrate 11. In addition, the touch panel 111 includes a substrate made of a transparent material (not shown in the figure) and a thin film with a preset light-transmitting pattern covering the lower surface of the substrate. This is only a specific setting method. In practical applications, it can be adjusted. For example, in a feasible embodiment, the touch panel 111 includes a substrate made of a transparent material (not shown in the figure) and a thin film with a preset light-transmitting pattern covering the upper surface of the substrate. The upper surface of the light guide plate 32 is attached to the lower surface of the transparent material substrate; in another feasible embodiment, the touch panel includes a substrate made of opaque plastic, and the substrate is provided with a hollow pattern penetrating through its thickness direction. The upper surface of the light guide plate 32 is attached to the lower surface of the transparent material substrate and covers the hollow pattern so that the light conducted out by the light guide plate 32 can pass through the hollow pattern. Figure 3 In, the lower surface of the touch panel 111 is flush with the lower surface of the first base 11, and the plate-shaped touch sensing disk is attached to the lower surface of the touch panel 111. This is only a specific setting method. In practical applications, it can be adjusted. For example, according to Figure 3 the shown orientation, the lower part of the touch panel 111 protrudes downward relative to the first substrate 11, that is, the lower surface of the touch panel 111 is lower than the lower surface of the first substrate 11, and the plate-shaped touch sensing disk is attached to the lower surface of the touch panel 111, or the lower part of the touch panel 111 is recessed upward relative to the first substrate 11, that is, the lower surface of the touch panel 111 is higher than the lower surface of the first substrate 11, and the plate-shaped touch sensing disk is attached to the lower surface of the touch panel 111.

[0059] In another feasible embodiment, different from the above embodiment, the above light-emitting diodes 33 and the light guide plate 32 are not provided, and the plate-shaped touch sensing disc only includes the conductive plate member 31, and the upper surface of the conductive plate member 31 is directly attached to the lower surface of the touch panel 111.

[0060] In another feasible embodiment, different from the above embodiment, the display window 112 is not provided on the first substrate 11, the second avoidance hole 42 is not provided on the elastic pad 4, and the digital tube 34 is not provided on the circuit board 3.

[0061] In another feasible embodiment, different from the above embodiment, the above clamping block 14 is not provided, and the circuit board 3 is fixedly connected to the front panel 1 by screws.

[0062] In another feasible embodiment, different from the above embodiment, the rear cover plate 2 does not include the support posts 23 and the support plate 24 provided on the second substrate 21, and the circuit board 3 is pressed against the front panel 1 only by the clamping block 14.

[0063] In addition, the present utility model also provides a tea bar machine, which includes the operation panel assembly of the tea bar machine in any one of the above embodiments.

[0064] So far, the technical solution of the present utility model has been described in conjunction with the preferred embodiments shown in the drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present utility model is obviously not limited to these specific embodiments. Without departing from the principle of the present utility model, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will all fall within the protection scope of the present utility model.

Claims

1. An operation panel assembly of a tea bar machine, characterized in that, The operation panel assembly includes a housing and a circuit board disposed within the housing. The housing includes a front panel, and a touch panel is provided on the front panel. The touch panel is made of an insulating material. A plate-shaped touch induction disc facing the touch panel is fixed on the side of the circuit board facing the front panel, and the plate-shaped touch induction disc is attached to the touch panel.

2. The operation panel assembly according to claim 1, wherein, The plate-shaped touch induction disc includes a conductive plate member fixed to the circuit board, and the side of the conductive plate member facing the touch panel is attached to the touch panel.

3. The operation panel assembly according to claim 1, characterized in that A light-emitting element is provided on the side of the circuit board facing the front panel, and at least a part of the touch panel is a light-transmissive structure. The plate-shaped touch induction disc includes a conductive plate member and a light guide plate. The conductive plate member is fixed to the circuit board, the surface of the conductive plate member facing the touch panel is attached to the first side surface of the light guide plate, the light-emitting element is attached to the first side surface of the light guide plate, and the second side surface of the light guide plate is attached to the touch panel and covers the light-transmissive structure.

4. The operation panel assembly according to claim 3, characterized in that, The number of the light-emitting elements is multiple, and the light-emitting elements are distributed in the surrounding area of the conductive plate member.

5. The operation panel assembly according to claim 3, wherein The touch panel includes a substrate made of a transparent material and a film with a preset light-transmissive pattern covering one side of the substrate.

6. The operation panel assembly according to any one of claims 2 to 5, characterized in that The conductive plate member is formed by the exposed copper foil on the circuit board.

7. The operation panel assembly according to any one of claims 3 to 5, characterized in that An elastic pad is further provided between the circuit board and the front panel. The two side surfaces of the elastic pad are respectively attached to the circuit board and the front panel. An avoidance hole is formed in the area of the elastic pad facing the light guide plate, and the light guide plate passes through the avoidance hole.

8. The operation panel assembly according to claim 1, wherein, A clamping block is provided on the back surface of the front panel, and the circuit board is fixed to the front panel through the clamping block.

9. The operation panel assembly according to claim 1, characterized in that, The housing includes a rear cover plate. The rear cover plate is fixedly connected to the front panel, and at least a part of the rear cover plate presses on the side of the circuit board facing the rear cover.

10. A tea bar machine, characterized in that, The tea bar machine includes the operation panel assembly of the tea bar machine according to any one of claims 1 to 9.

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