CN211046733U - Control panel structure and frequency converter - Google Patents

Abstract

The utility model is suitable for a controlling means technical field, the utility model provides a control panel structure and converter, set up on the door plant of external equipment, including setting up to pasting the keyboard shell of locating the door plant outside, control keyboard and fastening structure of setting on the keyboard shell, the fixed orifices has been seted up on the keyboard shell, fastening structure can pass the fixed orifices and be fixed in the door plant outside in order to be fixed in keyboard shell detachably, the last first sealing member that is equipped with of fastening structure, first sealing member is sealed in the fixed orifices, the seal groove has been seted up to keyboard shell inboard, it is equipped with the second sealing member to inlay on the seal groove, the second sealing member sets up to supporting and holding in the. Through the combined action of first sealing member and second sealing member, can fill the gap between fixed orifices and fastening structure, keyboard shell and the door plant respectively, strengthen the holistic dustproof of control panel structure, waterproof sealed effect, can reach IP 56's high protection requirement. In addition, the keyboard shell and the door plate are convenient to disassemble and assemble due to the arrangement of the fastening structure, and the process is very simple and convenient.

Description

Control panel structure and frequency converter

Technical Field

The utility model belongs to the technical field of controlling means, more specifically say, relate to a control panel structure and converter.

Background

The frequency converter is a power control device for controlling an alternating current motor by changing the frequency mode of a working power supply of the motor, and a control panel structure with a control function is arranged on a door panel of the frequency converter.

At present, for the maintenance work of converter or control panel structure, realize detachable through the buckle between door plant and the control panel structure and be connected, the leakproofness is good inadequately, when the converter uses under adverse circumstances such as open air or plum rain, thereby moist gas gets into the inside use that influences the converter of converter easily in the air.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides an one of purpose lies in: the utility model provides a control panel structure and converter, aims at solving prior art, and the leakproofness is good enough between control panel structure and the door plant and leads to influencing the technical problem that the converter used.

For solving the technical problem, the embodiment of the utility model provides an adopt technical scheme is:

the utility model provides a control panel structure sets up on the door plant of external equipment, including setting up to the subsides and locating the keyboard shell in the door plant outside sets up control keyboard and fastening structure on the keyboard shell, the fixed orifices has been seted up on the keyboard shell, fastening structure can pass the fixed orifices is in order to incite somebody to action keyboard shell detachably is fixed in the door plant outside, the last first sealing member that is equipped with of fastening structure, first sealing member seal in the fixed orifices, the seal groove has been seted up to keyboard shell inboard, inlay on the seal groove and be equipped with the second sealing member, the second sealing member set up to support to hold in the door plant outside.

Furthermore, the first sealing element is an elastic cap, the elastic cap is sleeved on the fastening structure, one end of the elastic cap extends into the fixing hole, the peripheral wall of one end of the elastic cap abuts against the inner peripheral wall of the fixing hole, a circle of first convex edge is arranged on the outer edge of the other end of the elastic cap in a protruding mode, and the first convex edge is overlapped on the outer side of the keyboard shell.

Further, the fastening structure comprises a first fastening piece and a second fastening piece, the first sealing piece is arranged on the first fastening piece, the second fastening piece is fixed on the door panel, and the first fastening piece penetrates through the fixing hole and is detachably locked on the second fastening piece.

Furthermore, the fastening structure further comprises a gasket and a sealing ring which are sequentially sleeved on the first fastening piece, a step is convexly arranged on the inner peripheral wall of the fixing hole, and the sealing ring is abutted between the gasket and the step.

Further, the first fastener is a screw, the second fastener is a press riveting nut, the press riveting nut is fixed on the door panel, and the screw can be detachably connected with the press riveting nut.

Furthermore, a first bulge is convexly arranged on the inner side wall of the sealing groove, and the second sealing element is abutted against the first bulge.

Furthermore, the first protrusions are arranged in a plurality of numbers, the first protrusions are respectively convexly arranged on the two inner side walls opposite to the sealing groove, and the two side walls opposite to the second sealing element respectively support against the first protrusions on the two inner side walls opposite to the sealing groove.

Furthermore, the second sealing element is an annular sealing element, a second protrusion is convexly arranged on the outer ring side wall and/or the inner ring side wall of the second sealing element, and the second protrusion abuts against the inner side wall of the sealing groove.

Further, the keyboard shell includes the casing, locates second protruding edge on the casing outer fringe, and locate third protruding edge on the second protruding edge outer fringe, the fixed orifices set up in on the second protruding edge, the seal groove is the ring channel, the seal groove set up in the third is protruding along inboard.

The utility model provides a control panel structure's beneficial effect lies in: compared with the prior art, the keyboard shell and the door plate are mutually fixed through the fastening structure, the fastening structure is provided with the first sealing element, the first sealing element is sealed in the fixing hole, the sealing effect of the joint of the fastening structure and the fixing hole is realized, and the external humid air is prevented from passing through the fixing hole; and, the seal groove has been seted up to the inboard of keyboard shell, inlay on the seal groove and be equipped with the second sealing member, when fastening structure fixes the keyboard shell on the door plant outside, the keyboard shell supports and holds in the door plant outside and compress the second sealing member, so that the second sealing member supports and holds in the door plant outside, thereby realize the sealed effect of the junction of door plant and keyboard shell, the combined action of first sealing member and second sealing member can strengthen the holistic dustproof of control panel structure, waterproof sealed effect, can reach IP 56's high protection requirement. In addition, the keyboard shell is detachably fixed on the outer side of the door plate through the fastening structure, so that the keyboard shell can be detached and assembled from the outer side of the door plate, and the process is very simple and convenient.

Still provide a converter, include above-mentioned any one control panel structure.

The utility model discloses a frequency converter, fix keyboard shell and door plant each other through the fastening structure, and set up the first sealing member on the fastening structure, the first sealing member is sealed in the fixed orifices, realize the sealing action of the junction of fastening structure and fixed orifices; and, the seal groove has been seted up to the inboard of keyboard shell, inlay on the seal groove and be equipped with the second sealing member, when fastening structure fixes the keyboard shell on the door plant outside, the keyboard shell supports and holds in the door plant outside and compress the second sealing member so that the second sealing member supports and holds in the door plant outside, thereby realize the sealed effect of the junction of door plant and keyboard shell, the combined action of first sealing member and second sealing member, can strengthen the holistic dustproof of control panel structure, waterproof sealed effect, avoid inside outside humid air gets into the converter, can reach IP 56's high protection requirement. In addition, the keyboard shell is detachably fixed on the outer side of the door plate through the fastening structure, so that the keyboard shell can be detached or assembled from the outer side of the door plate, and the process is very simple and convenient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive labor.

Fig. 1 is an exploded view of a control panel structure cooperating with a door panel according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

fig. 3 is an exploded view of a control panel structure according to an embodiment of the present invention;

fig. 4 is a partially enlarged view of fig. 3 at B.

Wherein, in the figures, the respective reference numerals:

1-a keyboard housing; 11-a fixation hole; 12-a seal groove; 121-a first protrusion; 13-a housing; 14-a second ledge; 15-third ledge; 2-a keypad film; 3-a fastening structure; 31-a first fastener; 32-a second fastener; 33-a washer; 34-a sealing ring; 4-a first seal; 41-a first ledge; 5-a second seal; 51-a second protrusion; 6-door panel; 61-mounting groove.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1 to fig. 3, a control panel structure according to an embodiment of the present invention is disposed on a door panel 6 of an external device, and includes a keyboard casing 1, a keyboard, a fastening structure 3, a first sealing member 4, and a second sealing member 5. Wherein the control keyboard is arranged on the keyboard housing 1.

Specifically, in this embodiment, the keyboard shell 1 is configured to be attached to the outer side of the door panel 6, the fixing hole 11 is formed in the keyboard shell 1, and the fastening structure 3 is at least partially disposed in the fixing hole 11 and can extend out of the fixing hole 11 to the outer side of the keyboard shell 1 to form a detachable connection with the door panel 6, so that the keyboard shell 1 is detachably fixed to the outer side of the door panel 6. The first sealing member 4 is disposed on the fastening structure 3, and the first sealing member 4 is sealed in the fixing hole 11, so that the fastening structure 3 is sealed in the fixing hole 11, and a gap between the fastening structure 3 and the fixing hole 11 is filled, thereby preventing external humid air from entering the fixing hole 11. The sealing groove 12 is formed in the inner side of the keyboard shell 1, the second sealing element 5 is embedded in the sealing groove 12, when the fastening structure 3 fixes the keyboard shell 1 on the door plate 6, the inner side end face of the keyboard shell 1 abuts against the outer side of the door plate 6, so that the second sealing element 5 in the sealing groove 12 is extruded and abuts against the space between the outer sides of the keyboard shell 1 and the door plate 6, gaps at the connecting positions of the keyboard shell 1 and the door plate 6 are filled, and the dustproof and waterproof effects are enhanced.

In this embodiment, the fixing hole 11 is a through hole, a notch, or other holes that can be used to fix the keyboard case 1 and the door panel 6.

In the embodiment of the utility model, the keyboard shell 1 and the door plate 6 are fixed to each other through the fastening structure 3, the fastening structure 3 is provided with the first sealing element 4, the first sealing element 4 is sealed in the fixing hole 11, and the gap between the fastening structure 3 and the fixing hole 11 is filled, so that the sealing effect of the joint of the fastening structure 3 and the fixing hole 11 is realized, and the external humid air is prevented from entering the inner side of the door plate 6 through the fixing hole 11 to cause the humidity inside the external equipment; and, seal groove 12 has been seted up to the inboard of keyboard shell 1, inlay on seal groove 12 and be equipped with second sealing member 5, when fastening structure 3 fixes keyboard shell 1 on the door plant 6 outside, keyboard shell 1 supports and holds in the door plant 6 outside and compresses second sealing member 5, so that second sealing member 5 supports and holds in the door plant 6 outside, the gap between keyboard shell 1 and door plant 6 has been filled, thereby realize the sealed effect of the junction of door plant 6 and keyboard shell 1, the combined action of first sealing member 4 and second sealing member 5, can strengthen the holistic dustproof of control panel structure, waterproof sealed effect, can reach IP 56's high protection requirement, avoid the inside structure of external equipment to wet and influence the use. In addition, keyboard shell 1 passes through fastening structure 3 detachably to be fixed on the door plant 6 outside, and the staff can directly dismantle control panel structure or assemble control panel structure from the outside of door plant 6, and the technology is very simple and convenient. Compare in traditional needs and demolish door plant 6 from the external equipment, follow the inboard of door plant 6 again and demolish the control panel structure or the specific operation of installation say, the embodiment of the utility model provides an installation of control panel structure is very convenient with the dismantlement work, and the structure is very simple, has reduced holistic cost of manufacture.

Optionally, as one implementation manner of this embodiment, the fastening structure 3 may be configured as a screw, a bolt, or a stud, an internal thread is disposed on an inner peripheral wall of the fixing hole 11, one end of the fastening structure 3 passes through the fixing hole 11, and is locked and limited in the fixing hole 11 by the thread, and the other end of the fastening structure extends from the inner side of the keyboard casing 1 to the door panel 6, so as to form a detachable connection with the door panel 6, and the first sealing element 4 is fixed on an end of the fastening structure 3 away from the door panel 6 and is sealed in the fixing hole 11, so that the fastening structure 3 is sealed in the fixing hole 11. Of course, the fastening structure 3 in the present embodiment may also be provided in other structures, and the specific structure is not limited herein.

Optionally, referring to fig. 1, as an implementation manner of this embodiment, a keyboard film 2 is attached to an outer side of a keyboard shell 1, on one hand, a keyboard mark facing a control keyboard is disposed on an upper shell of the keyboard film 2, so that a user can operate the control keyboard according to the keyboard mark, thereby implementing control over an external device. On the other hand, the keyboard membrane 2 can be made of waterproof materials, and the waterproof keyboard membrane 2 can achieve a certain waterproof and dustproof sealing effect on the control keyboard.

Specifically, in this embodiment, the door panel 6 is configured as a sheet metal door panel 6, and the external device may be configured as a frequency converter, or may be configured as other electronic devices, which is not limited herein. The control panel structure is arranged outside a door panel 6 of the external equipment, and the first sealing piece 4 and the second sealing piece 5 are used together to prevent external humid air from entering the internal part of the external equipment and influencing the normal use of the external equipment.

In this embodiment, the keyboard housing 1 is square, and certainly, the number of the fastening structures 3 and the fixing holes 11 is four, and the four fixing holes 11 are distributed at four corners of the keyboard housing 1, so that the fixing of the keyboard housing 1 can be enhanced. The number of the fastening structures 3 and the number of the fixing holes 11 are not limited to the specific number.

Further, in this embodiment, the first sealing element 4 is an elastic cap, and the elastic cap is made of a rubber material, so that the first sealing element has good elasticity and can also achieve a sealing and waterproof effect. Of course, the material of the elastic cap is not limited herein.

Specifically, referring to fig. 2, in the embodiment, the elastic cap is sleeved on the fastening structure 3 and extends into the fixing hole 11, and one end of the elastic cap abuts against and is squeezed between the outer peripheral wall of the fastening structure 3 and the inner peripheral wall of the fixing hole 11, so as to fill a gap between the fixing hole 11 and the fastening structure 3, thereby achieving the sealing effect of the first layer. In addition, the outer edge of the other end of the elastic cap is convexly provided with a circle of first convex edge 41, and the first convex edge 41 is lapped on the outer side of the keyboard shell 1, so that the opening of the fixing hole 11 is sealed, the sealing effect of the second layer is realized, and the sealing effect of the fixing hole 11 and the fastening structure 3 can be enhanced.

Optionally, as another implementation manner of this embodiment, the elastic cap is sleeved on one end of the fastening structure 3 away from the door panel 6, the elastic cap and the fastening structure 3 extend into the fixing hole 11 at the same time, and the elastic cap abuts against and is pressed between the outer peripheral wall of the fastening structure 3 and the inner peripheral wall of the fixing hole 11, so that a gap between the fixing hole 11 and the fastening structure 3 is filled, and a sealing effect is achieved.

Further, referring to fig. 2, in the present embodiment, the fastening structure 3 includes a first fastening member 31 and a second fastening member 32, the first sealing member 4 is disposed on the first fastening member 31, the second fastening member 32 is fixed on the door panel 6, and the first fastening member 31 passes through the fixing hole 11 and at least partially protrudes from the inner side of the keyboard housing 1 to form a detachable connection with the second fastening member 32 on the door panel 6.

Further, referring to fig. 2, in this embodiment, the fastening structure 3 further includes a gasket 33 and a sealing ring 34 sequentially sleeved on the first fastening member 31, an inner peripheral wall of the fixing hole 11 protrudes to form a circle of steps, when the first fastening member 31 passes through the fixing hole 11 and is connected with the second fastening member 32, the gasket 33 is limited on the steps to limit the first fastening member 31 in the fixing hole 11, and the sealing ring 34 abuts between the gasket 33 and the steps and is pressed, so that the sealing ring 34 is deformed to fill a gap between the gasket 33 and the fixing hole 11, on one hand, a sealing effect on the fixing hole 11 is achieved, and a sealing effect on a third layer of the fixing hole 11 is achieved, and on the other hand, the sealing ring 34 is pressed and deformed and abuts against the gasket 33, so that a fixing effect of the first fastening member 31 can be enhanced.

In this embodiment, the gasket 33 is configured as a metal gasket, and the sealing ring 34 is configured as a ring-shaped rubber ring, but the gasket 33 and the sealing ring 34 are not limited herein.

Further, referring to fig. 2, in the present embodiment, the first fastening member 31 is a screw, the second fastening member 32 is a rivet nut, the door panel 6 is provided with a through hole, the rivet nut is fixed on the through hole, and the screw passes through the fixing hole 11 to form a detachable connection with the rivet nut. Here, the fixing hole 11 is provided as a through hole, and of course, in order to reinforce the connection between the key pad case 1 and the door panel 6 and to reinforce the sealing effect to the fixing hole 11, an internal thread may be provided on the inner peripheral wall of the fixing hole 11, and an external thread of a screw forms a threaded connection with the internal thread of the fixing hole 11.

Further, referring to fig. 3 and fig. 4, in the present embodiment, a first protrusion 121 is convexly disposed on an inner sidewall of the sealing groove 12, and when the second sealing element 5 is embedded in the sealing groove 12, the second sealing element 5 is supported against the first protrusion 121, so that the second sealing element 5 is pressed by the first protrusion 121, and the fixing strength of the second sealing element 5 in the sealing groove 12 is enhanced.

In this embodiment, the second sealing member 5 is a rubber ring, and the material of the second sealing member 5 is not limited herein.

Specifically, referring to fig. 4, in the present embodiment, the first protrusions 121 are disposed in plural, the plural first protrusions 121 are respectively protruded on two opposite inner sidewalls of the sealing groove 12, when the second sealing member 5 is embedded in the sealing groove 12, two opposite sidewalls of the second sealing member 5 respectively abut against the first protrusions 121 on two opposite inner sidewalls of the sealing groove 12, so as to enhance the fixing strength of the second sealing member 5 in the sealing groove 12.

Specifically, in the present embodiment, the second sealing element 5 is configured as an annular sealing element, and the inner ring side wall and the outer ring side wall of the second sealing element 5 respectively abut against the first protrusions 121 on the two opposite inner side walls of the sealing groove 12.

In this embodiment, the keyboard housing 1 is configured as a square, and correspondingly, the second sealing member 5 is also configured as a square rubber ring, which is not limited herein.

Further, referring to fig. 2, in the present embodiment, the second sealing element 5 is configured as an annular sealing element, a second protrusion 51 is formed on an outer annular sidewall and/or an inner annular sidewall of the second sealing element 5 in a protruding manner, and the second protrusion 51 is supported on an inner sidewall of the sealing groove 12, so as to further enhance the fixing strength between the second sealing element 5 and the sealing groove 12.

Further, referring to fig. 2 and fig. 3, in the present embodiment, the keyboard housing 1 includes a housing 13, a second protruding edge 14 disposed on an outer edge of the housing 13, and a third protruding edge 15 disposed on an outer edge of the second protruding edge 14. Specifically, the control keyboard is provided on the housing 13, and the keyboard film 2 is also provided on the outside of the housing 13. The fixed orifices 11 are opened on the second convex edge 14, the sealing groove 12 is opened on the inner side of the third convex edge 15, and the sealing groove 12 is an annular groove, thereby when the control panel structure is fixed on the door panel 6, the second sealing element 5 is enclosed on the outer sides of the fastening structure 3 and the fixed orifices 11, the sealing effect of the second sealing element 5 can also indirectly realize the sealing effect on the fixed orifices 11.

Specifically, referring to fig. 1 and fig. 2, in the embodiment, the housing 13 is square, the door panel 6 is provided with a mounting groove 61, the mounting groove 61 is square, at least a portion of the housing 13 passes through the mounting groove 61, the second fastening member 32 is fixed on the outer end surface of the mounting groove 61, and the third protruding edge 15 and the second sealing member 5 are abutted against the outer end surface of the mounting groove 61, so that the sealing effect of the mounting groove 61 can be realized.

The embodiment of the utility model provides a still provide a converter, including the control panel structure, detailed explanation has been made to the control panel structure to above-mentioned embodiment, and the here is no longer repeated.

Specifically, in this embodiment, the frequency converter includes a cabinet, and the door panel 6 may be a frame door of the cabinet, or the door panel 6 is fixed to the cabinet.

The embodiment of the utility model provides a frequency converter, through fastening structure 3 with keyboard shell 1 and door plant 6 mutual fixation, and set up first sealing member 4 on fastening structure 3, first sealing member 4 seals in fixed orifices 11, realizes the sealing effect of the junction of fastening structure 3 and fixed orifices 11; and, seal groove 12 has been seted up to the inboard of keyboard shell 1, inlay on seal groove 12 and be equipped with second sealing member 5, when fastening structure 3 fixes keyboard shell 1 on the door plant 6 outside, keyboard shell 1 supports to hold in the door plant 6 outside and compresses second sealing member 5 so that second sealing member 5 supports to hold in the door plant 6 outside, thereby realize the sealed effect of the junction of door plant 6 and keyboard shell 1, the combined action of first sealing member 4 and second sealing member 5, can strengthen the holistic dustproof of control panel structure, waterproof sealed effect, avoid inside outside humid air gets into the converter, can reach IP 56's high protection requirement. In addition, keyboard shell 1 passes through fastening structure 3 detachably to be fixed on the door plant 6 outside, can realize dismantling or assembling keyboard shell 1 from the outside realization of door plant 6, and the technology is very simple and convenient.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides a control panel structure, sets up on the door plant of external equipment, its characterized in that, including setting up to pasting and locating the keyboard shell in the door plant outside sets up control keyboard and fastening structure on the keyboard shell, the fixed orifices has been seted up on the keyboard shell, fastening structure can pass the fixed orifices in order to incite somebody to action keyboard shell detachably is fixed in the door plant outside, the last first sealing member that is equipped with of fastening structure, first sealing member seal in the fixed orifices, the seal groove has been seted up to keyboard shell inboard, inlay on the seal groove and be equipped with the second sealing member, the second sealing member set up to support to hold in the door plant outside.

2. The control panel structure of claim 1, wherein the first sealing element is an elastic cap, the elastic cap is sleeved on the fastening structure, one end of the elastic cap extends into the fixing hole, the outer circumferential wall of one end of the elastic cap abuts against the inner circumferential wall of the fixing hole, a circle of first convex edge is convexly arranged on the outer edge of the other end of the elastic cap, and the first convex edge is lapped on the outer side of the keyboard shell.

3. The control panel structure of claim 1, wherein the fastening structure comprises a first fastening member and a second fastening member, the first sealing member is disposed on the first fastening member, the second fastening member is fixed on the door panel, and the first fastening member passes through the fixing hole and is detachably fastened to the second fastening member.

4. The control panel structure of claim 3, wherein the fastening structure further comprises a gasket and a sealing ring sequentially sleeved on the first fastening member, a step is convexly arranged on the inner peripheral wall of the fixing hole, and the sealing ring is abutted between the gasket and the step.

5. The control panel structure of claim 3, wherein the first fastening member is a screw and the second fastening member is a rivet nut, the rivet nut being configured to be fastened to the door panel, the screw being detachably connected to the rivet nut.

6. The control panel structure of claim 1, wherein a first protrusion is protruded from an inner sidewall of the sealing groove, and the second sealing member abuts against the first protrusion.

7. The control panel structure of claim 6, wherein the first protrusions are disposed in a plurality, the first protrusions are respectively protruded on two opposite inner sidewalls of the sealing groove, and two opposite sidewalls of the second sealing member respectively abut against the first protrusions on the two opposite inner sidewalls of the sealing groove.

8. The control panel structure of claim 1, wherein the second sealing member is an annular sealing member, and a second protrusion is protruded from an outer annular sidewall and/or an inner annular sidewall of the second sealing member, and abuts against an inner sidewall of the sealing groove.

9. The control panel structure of any of claims 1-8, wherein the keyboard casing comprises a casing, a second protruding edge disposed on an outer edge of the casing, and a third protruding edge disposed on an outer edge of the second protruding edge, the fixing hole is opened on the second protruding edge, the sealing groove is an annular groove, and the sealing groove is opened inside the third protruding edge.

10. A frequency converter, characterized in that it comprises a control panel structure according to any of claims 1-9.

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