Operator and frequency converter

By designing the layout of buttons and circuit board buttons of different shapes, the problem of unreasonable layout of the operator keys is solved, and the recognition of the buttons is improved and the error operation is avoided, which improves the operation feel.

CN223167379UActive Publication Date: 2025-07-29CHANGSHA SUNYE ELECTRIC CO LTD +1
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Patent Information

Application Number
CN202421643431.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-11
Publication Date
2025-07-29
Estimated Expiration
2034-07-11

AI Technical Summary

Technical Problem

The existing operator key layout is unreasonable and has low recognition, which can easily lead to misoperation and poor operation feel.

Method used

Keys of different shapes are designed, including the second key set in a ring and the third key on the outside. Combined with the buttons on the circuit board, the key layout improvement and blind operation functions are realized.

Benefits of technology

It improves the recognition of the buttons, avoids misoperation, improves the operation feel, and realizes the blind operation function.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a manipulator and a frequency converter, relates to manipulator technical field, the manipulator comprises a housing assembly, a first button, a second button, a third button and a circuit board, the housing assembly comprises a housing, a cover body and a pressing plate, the cover body and the housing are arranged in the housing, the cover body and the housing are enclosed to form an accommodating cavity, and the pressing plate is arranged in the accommodating cavity; the first key, the second key and the third keys are different in shape, the first key, the second key and the third keys are all arranged on the pressing plate and arranged on the shell in a protruding mode, the second key is annularly arranged on the outer side of the first key, the third keys are all arranged on the outer side of the second key, and the circuit board is clamped in the containing cavity through a clamping piece. And the circuit board is provided with buttons at positions corresponding to the first key, the second key and the third key. According to the technical scheme provided by the utility model, the technical problems of unreasonable key layout and low identification degree of the existing manipulator can be solved.
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Description

Technical Field

[0001] The utility model relates to the technical field of operators, in particular to an operator and an inverter. Background Art

[0002] An operator, also known as a handheld operator, as an external remote control device, is mainly used to control the operation and stop of equipment. However, the layout of the buttons of the existing operator is unreasonable, the recognition rate of the buttons is low, and there are problems of misoperation and poor operation feel.

[0003] Therefore, it is necessary to provide a new operator and an inverter to solve the above technical problems. Summary of the Utility Model

[0004] The main purpose of the utility model is to provide an operator and an inverter, aiming to solve the technical problems of unreasonable button layout and low recognition rate of the existing operator.

[0005] To achieve the above purpose, an operator proposed by the utility model includes:

[0006] A housing assembly, the housing assembly includes a housing, a cover body and a pressing plate arranged on the housing, the cover body and the housing enclose to form an accommodating cavity, and the pressing plate is arranged in the accommodating cavity;

[0007] A first button, a plurality of second buttons and a plurality of third buttons, the shapes of the first button, the second buttons and the third buttons are different from each other, and they are all arranged on the pressing plate and protrude from the housing, the second buttons are arranged annularly outside the first button, and each of the third buttons is arranged outside the second button;

[0008] A circuit board, the circuit board is clamped in the accommodating cavity through a clamping member, and buttons are arranged at positions corresponding to the first button, the second buttons and the third buttons on the circuit board.

[0009] In an embodiment, the first button is one of a circular block and a square block, the second button is a sector block, and the third button is the other of a circular block and a square block; each of the second buttons is arranged in a gradually expanding or gradually shrinking manner from the side close to the first button to the side far from the first button.

[0010] In an embodiment, both the first button and the second button have a pressing surface, and the pressing surface protrudes away from the housing assembly or depresses towards the housing assembly.

[0011] In one embodiment, clamping grooves are formed on both sides of the circuit board. The clamping member includes a plurality of clamping blocks, and each clamping block is disposed at a position on the housing corresponding to the clamping groove, and each clamping block is clamped in the corresponding clamping groove.

[0012] In one embodiment, the housing is provided with a positioning pin, and the circuit board is provided with a pin hole, and the positioning pin is inserted through the pin hole.

[0013] In one embodiment, the housing is provided with a positioning post, and the pressing plate is provided with a positioning hole, and the positioning post is inserted through the positioning hole.

[0014] In one embodiment, the circuit board is provided with an external module, and an external hole is formed in the housing at a position corresponding to the external module, and the external module is inserted through the external hole; the housing is provided with a movable plugging block, and the plugging block can plug the external hole.

[0015] In one embodiment, a network cable interface protruding from the cover body is provided on the circuit board.

[0016] In one embodiment, the operator further includes a display window plate. The circuit board is provided with a display module, and an observation hole is formed in the housing at a position corresponding to the display module, and the display window plate is disposed at the observation hole.

[0017] In addition, the present invention further provides an inverter, including:

[0018] A box body, the box body is provided with an accommodation space;

[0019] The operator as described above, and the operator is detachably disposed in the accommodation space.

[0020] The technical solution of the present utility model can improve the layout of the buttons by providing a first button, a second button annularly arranged outside the first button, and a third button arranged outside the second button, so as to facilitate the user to confirm the functions of the buttons, avoid misoperation, and at the same time enable blind operation. In this embodiment, arranging the second button annularly outside the first button and arranging the third button outside the second button can improve the layout of the buttons, so as to facilitate the user to confirm the functions of the buttons and avoid misoperation. At the same time, with the above layout of the first button, the second button, and the third button, workers can confirm the functions of each button without looking at the labels of the buttons, realizing blind operation. Designing the first button, the second button, and the third button into different shapes facilitates the user to confirm the functions of each button. Projecting the first button, the second button, and the third button from the housing can enhance the feedback when pressing the buttons. When the user presses a button, the button will move towards the direction close to the circuit board, and then abut against the button on the circuit board. As the user continues to press, the button on the circuit board can be pressed through the button to realize the control of the circuit board. In a specific embodiment, the first button is a confirmation button for confirming whether a control command is sent, the second button is a selection button for selecting the parameter information to be displayed, so that the display module displays different parameter information, and the third button is a function button for selecting different operation modes to make the device in different operating states. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0022] Figure 1 Schematic diagram of the structure of the operator in the embodiment provided by the present utility model;

[0023] Figure 2 Front view of the operator in the embodiment provided by the present utility model;

[0024] Figure 3 Exploded view of the operator in the embodiment provided by the present utility model;

[0025] Figure 4 Schematic diagram of the structure of the pressing plate in the embodiment provided by the present utility model;

[0026] Figure 5 Schematic diagram of the connection structure between the pressing plate and the housing in the embodiment provided by the present utility model;

[0027] Figure 6 Structural schematic diagram of the operator (without the cover) in the embodiment provided by the present utility model.

[0028] Explanation of the reference numerals in the attached drawings:

[0029] 100, housing assembly; 110, housing; 111, clamping block; 112, positioning pin; 113, positioning post; 120, cover; 130, pressing plate; 131, first button; 1311, pressing surface; 1312, boss; 132, second button; 133, third button; 134, positioning hole; 140, external connection hole; 150, blocking block; 200, circuit board; 210, button; 220, card slot; 230, pin hole; 240, external module; 250, display module; 300, display window plate; 400, network interface.

[0030] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the attached drawings. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0032] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0033] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes the A solution, or the B solution, or the solution where A and B are satisfied simultaneously.

[0034] In addition, the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] As an external remote control device for controlling the operation of equipment, the operator plays an extremely important role. The operator mainly consists of a housing assembly, a circuit board installed in the housing assembly, and a pressing plate. Among them, buttons are provided on the circuit board, and keys corresponding to the buttons are provided at the positions of the pressing plate corresponding to the buttons. When in use, the worker holds the operator by hand and presses different buttons on the operator to control the equipment, so that the equipment runs, stops, or is in different working states. However, the keys of the existing operators are usually arranged in a rectangular pattern, which makes it difficult for workers to distinguish the functions of the keys on the operator. When in use, they need to first check the markings on the keys and then press the corresponding keys to control the equipment. At the same time, most of the existing operators use membrane keys, and these keys are basically in the same plane as the housing assembly, which results in less feedback when pressing the keys and affects the operating feel.

[0036] The present utility model provides an operator and an inverter, aiming to solve the technical problems of unreasonable key layout and low recognition rate of the existing operator.

[0037] Please refer to Figures 1 to 3 , in an embodiment of the present utility model, the operator includes a housing assembly 100, a first key 131, a second key 132, a third key 133, and a circuit board 200. The housing assembly 100 includes a housing 110, a cover body 120 provided on the housing 110, and a pressing plate 130. The cover body 120 and the housing 110 enclose to form a receiving cavity, and the pressing plate 130 is provided in the receiving cavity; the shapes of the first key 131, the second key 132, and the third key 133 are different. The first key 131, the second key 132, and the third key 133 are all provided on the pressing plate 130 and protrude from the housing 110. The second key 132 is annularly provided outside the first key 131, and each third key 133 is provided outside the second key 132. The circuit board 200 is clamped in the receiving cavity through a clamping member, and buttons 210 are provided at the positions of the circuit board 200 corresponding to the first key 131, the second key 132, and the third key 133.

[0038] The technical solution of the present utility model can improve the layout of the buttons by providing a first button 131, a second button 132 annularly arranged outside the first button 131, and a third button 133 arranged outside the second button 132, so as to facilitate the user to confirm the functions of the buttons, avoid misoperation, and at the same time enable blind operation. In this embodiment, the second button 132 is annularly arranged outside the first button 131, and the third button 133 is arranged outside the second button 132, which can improve the layout of the buttons, enhance the recognition of the buttons, facilitate the user to confirm the functions of the buttons, and avoid misoperation. Specifically, when the user uses the operator, first hold the operator by hand, then place the thumb on the surface of the button, and feel the positions of the buttons by moving the thumb, so as to confirm the functions of the buttons and avoid misoperation. For example, when the user holds the operator by hand and places the thumb on the surface of any button, by moving the thumb to feel the positions of the surrounding buttons, the position distribution of the surrounding buttons can be known. Then, by combining the position distribution of each button, the functions of each button can be confirmed and misoperation can be avoided. At the same time, with the above layout of the first button 131, the second button 132 and the third button 133, the worker can confirm the functions of each button without looking at the labels of the buttons, realizing blind operation. When the user presses the button, the button will move towards the circuit board 200, and then abut against the button 210 on the circuit board 200. As the user continues to press, the button on the circuit board 200 can be pressed through the button, realizing the control of the circuit board 200. In a specific embodiment, the first button 131 is a confirmation button for confirming whether a control command is sent, the second button 132 is a selection button for selecting the parameter information to be displayed, so that the display module 250 displays different parameter information, and the third button 133 is a function button for selecting different operation modes, so that the device is in different operating states.

[0039] The first button 131, the second button 132, and the third button 133 are designed in different shapes, which facilitates the user to confirm the functions of each button. Specifically, when using the hand controller, the user can feel the shape of each button by touching, and then, combined with the position distribution of each button, the functions of each button can be confirmed. It should be noted that in addition to being installed on the housing 110 through the pressing plate 130, the first button 131, the second button 132, and the third button 133 on the housing assembly 100 can also be directly installed on the housing 110. Among them, the first button 131, the second button 132, and the third button 133 can be adhesively bonded to the housing 110. The first button 131, the second button 132, and the third button 133 protruding from the housing 110 can improve the feedback when pressing the button, that is, when the worker presses the button, a more obvious pressing process can be felt, so as to facilitate the worker to confirm whether the button is pressed, thereby improving the operating feel of the manipulator. Installing the circuit board 200 in the accommodating cavity by means of snap connection can reduce the installation difficulty of the circuit board 200, and further reduce the assembly difficulty of the manipulator. In a specific embodiment, to ensure the reliability of the installation of the circuit board 200, the circuit board 200 also needs to be installed in the accommodating cavity by bolts, and the circuit board 200 being snapped into the accommodating cavity is a pre-installation, that is, before the circuit board 200 is completely fixed by bolts, the circuit board 200 is first snapped into the accommodating cavity. The connection between the housing 110 and the cover 120 is a bolt connection, which can reduce the assembly difficulty of the manipulator. In addition, the housing 110 and the cover 120 can also be riveted, snapped, etc.

[0040] Please refer to Figure 1 , in a specific embodiment, the number of the second buttons 132 is four, and the four second buttons 132 are arranged at equal intervals in sequence along the circumferential direction of the first button 131, and the number of the third buttons 133 is seven. The seven third buttons 133 are all arranged outside the second buttons 132 and are sequentially arranged on both sides and above the first button 131. That is, the seven third buttons 133 enclose a U-shape with the opening facing downward, the first button 131 is arranged inside the U-shape formed by the seven third buttons 133, and the four second buttons 132 are annularly arranged at equal intervals around the first button 131. Specifically, the four second buttons 132 respectively correspond to the four directions of up, down, left, and right, and the seven third buttons 133 respectively correspond to functions such as menu, run, and exit.

[0041] Please refer to Figure 1 , Figure 2 and Figure 4, in an embodiment of the present utility model, the first button 131 is one of a circular block and a square block, the second button 132 is a sector block, and the third button 133 is the other of a circular block and a square block. In this embodiment, the first button 131 is a circular block and the third button 133 is a square block. Specifically, designing the first button 131 as a circular block conforms to the user's habit of using devices such as remote controls, which can reduce the difficulty for the user to confirm the function of the button and enable the user to obtain a better user experience. The second button 132 is designed as a sector block, that is, the sizes of the two sides of the second button 132 close to and far from the first button 131 are different, which is convenient for the user to confirm the corresponding relationship between each second button 132 and up, down, left, and right, and further confirm the function of the second button 132. The third button 133 is designed as a square, and its outer contour is quite different from that of the circular first button 131, which is convenient for the user to distinguish. In addition, the first button 131 can be designed as an ellipse, the second button 132 can be designed as a triangle, and the third button 133 can be designed as a square.

[0042] Each second button 132 is arranged to gradually expand or gradually contract from the side close to the first button 131 to the side far from the first button 131. Since the second buttons 132 are arranged in a ring outside the first button 131, designing the second buttons 132 to gradually increase or gradually decrease from the side close to the first button 131 to the side far from the first button 131, that is, each second button 132 gradually increases or decreases in the four directions of up, down, left, and right, can further improve the recognition of the buttons, so as to facilitate the worker to confirm the function of the second button 132 and achieve blind operation. Specifically, when using the operator, the worker holds the operator and can confirm the function of each second button 132 by touching to clarify the shape and position distribution of each second button 132. In this embodiment, the second button 132 is arranged to gradually expand from the side close to the first button 131 to the side far from the first button 131.

[0043] Please refer to Figure 4, in an embodiment of the present utility model, both the first button 131 and the second button 132 have a pressing surface 1311, and the pressing surface 1311 protrudes away from the housing assembly 100 or is recessed towards the housing assembly 100. Designing the pressing surfaces 1311 of the first button 131 and the second button 132 to protrude away from the housing assembly 100 or be recessed towards the housing assembly 100 enables workers to feel the protrusion or depression of the buttons when holding the operator and touching the buttons, which can improve the recognition of the buttons and facilitate workers to confirm the functions of the buttons. Specifically, whether the pressing surfaces 1311 of the first button 131 and the second button 132 protrude away from the housing assembly 100 or are recessed towards the housing assembly 100 can be designed according to actual usage requirements. For example: the pressing surfaces 1311 of both the first button 131 and the second button 132 are designed to protrude away from the housing assembly 100; the pressing surface 1311 of the first button 131 is designed to protrude away from the housing assembly 100, and the pressing surface 1311 of the second button 132 is designed to be recessed towards the housing assembly 100.

[0044] Please refer to Figure 3 , Figure 5 and Figure 6 , in an embodiment of the present utility model, clamping grooves 220 are provided on both sides of the circuit board 200. The clamping member includes a plurality of clamping blocks 111, and each clamping block 111 is disposed at a position of the housing 110 corresponding to the clamping groove 220, and each clamping block 111 is clamped in the corresponding clamping groove 220. In the form of cooperation between the clamping block 111 and the clamping groove 220, the circuit board 200 is clamped in the accommodation cavity, which has the characteristics of simple structure and convenient manufacturing, and can reduce the manufacturing difficulty of the operator. In a specific embodiment, one clamping groove 220 is provided on both sides of the circuit board 200, and the number of clamping blocks 111 is two, and the two clamping blocks 111 are clamped in the corresponding clamping grooves 220; in addition, the number of clamping grooves 220 and clamping blocks 111 can be increased according to actual needs. In a more specific embodiment, mounting posts are provided on the housing 110, and the clamping block 111 is in a hook shape. When clamping the circuit board 200 on the housing 110, first align the clamping groove 220 of the circuit board 200 with the corresponding clamping block 111, and then press the circuit board 200 so that the hook portion of the clamping block 111 passes through the groove and abuts against the end face of the circuit board 200 away from the housing 110. At this time, the end face of the circuit board 200 facing the housing 110 abuts against the mounting post, and the end face of the circuit board 200 away from the housing 110 abuts against the hook portion of the clamping block 111. After clamping the circuit board 200 on the housing 110, the circuit board 200 can be fixed to the housing 110 by bolts to ensure the reliability of the installation of the circuit board 200.

[0045] Please refer to Figure 5, in an embodiment of the present utility model, the housing 110 is provided with positioning pins 112, and the circuit board 200 is provided with pin holes 230. The positioning pins 112 are inserted into the pin holes 230. When installing the circuit board 200 into the accommodating cavity, the positioning pins 112 are inserted into the pin holes 230, which can position the circuit board 200 to ensure the accuracy of the installation position of the circuit board 200, and further ensure that each key on the pressing plate 130 can accurately pass through the key holes formed in the housing 110. In a specific embodiment, the number of positioning pins 112 is two, and the circuit board 200 is provided with pin holes 230 corresponding to the positions of the positioning pins 112, and each positioning pin 112 is inserted into the corresponding pin hole 230.

[0046] Please refer to Figure 4 and Figure 5 , in an embodiment of the present utility model, the housing 110 is provided with positioning posts 113, and the pressing plate 130 is provided with positioning holes 134. The positioning posts 113 are inserted into the positioning holes 134. When assembling the operator, through the cooperation of the positioning posts 113 and the positioning holes 134, the installation position of the pressing plate 130 can be ensured to be accurate, and it can be ensured that each key on the pressing plate 130 can accurately pass through the key holes formed in the housing 110. In a specific embodiment, the number of positioning posts 113 is multiple, and the multiple positioning posts 113 are arranged in a rectangular array. The pressing plate 130 is provided with positioning holes 134 corresponding to the positions of the positioning posts 113, and each positioning post 113 is inserted into the corresponding positioning hole 134.

[0047] Please refer to Figure 3, in an embodiment of the present utility model, the circuit board 200 is provided with an external module 240, and the housing 110 is provided with an external hole 140 corresponding to the position of the external module 240, and the external module 240 is inserted through the external hole 140. Inserting the external module 240 through the external hole 140 is used to realize the electrical signal connection between the circuit board 200 of the operator and an external device, thereby facilitating the operator to download and read the data information of the external device. In a specific embodiment, the external module 240 may be one of a type-c interface, a lightning interface, and a USB interface. Moreover, the housing 110 is provided with a movable blocking block 150, and the blocking block 150 can block the external hole 140. The blocking block 150 is used to block the external hole 140 to protect the external module 240 of the circuit board 200 from being damaged, and can also isolate the outside to prevent foreign matters such as dust from adhering to the external module 240. In a specific embodiment, the blocking block 150 is rotatably arranged on the housing assembly 100, the blocking block 150 is made of rubber material or silica gel material, and a convex portion is formed on the blocking block 150, and the convex portion can be inserted into the interface of the external module 240, which can prevent the blocking block 150 from falling off from the external hole 140. Further, to make the appearance of the operator more beautiful, when the blocking block 150 blocks the external hole 140, the blocking block 150 is flush with the outer surface of the housing assembly 100.

[0048] Please refer to Figure 6 , in an embodiment of the present utility model, to realize the signal connection between the operator and the internal electrical components of the box body of an external frequency converter, a network cable interface 400 extending out of the cover body 120 is provided on the circuit board 200.

[0049] Please refer to Figure 3, in an embodiment of the present utility model, the operator further includes a display window panel 300. The circuit board 200 is provided with a display module 250. The housing 110 is provided with an observation hole at a position corresponding to the display module 250, and the display window panel 300 is arranged at the observation hole. The display module 250 is used to display the real-time parameter information of the external device, such as temperature, rotation speed, frequency, etc. In this embodiment, the display window panel 300 is a transparent plate. When the worker uses the operator, he can view the parameter information displayed by the display module 250 through the display window panel 300 to confirm whether the external device is in a normal working state; at the same time, by pressing different buttons, the parameter information displayed by the display module 250 can be adjusted. In a specific embodiment, the display window panel 300 can be made of a glass plate, an acrylic plate, or a plate made of other transparent materials. Further, a receiving groove is formed on the outer shell assembly 100, and the display window panel 300 is placed in the receiving groove, and the end surface of the display window panel 300 facing away from the outer shell assembly 100 is flush with the outer surface of the outer shell assembly 100, which can make the appearance of the operator more beautiful. And, in order to obtain a better lighting effect, a photosensitive material can be coated on the surface of the display window panel 300 according to actual needs to enhance the lighting effect of the display module in an environment with a relatively large light intensity.

[0050] In an embodiment of the present utility model, the pressing plate 130 is made of rubber material or silica gel material, that is, the pressing plate 130 has certain elasticity and ductility, which can ensure that when the worker presses the button, the button can press the button 210 installed on the circuit board 200. Please refer to Figure 5 , in a specific embodiment, the pressing plate 130 is made of silica gel material. And, to ensure that the button can abut against the button 210 when being pressed, a boss 1312 that can abut against the button 210 is formed on one side of each button facing the button 210.

[0051] The present utility model also proposes an inverter, which includes a box body and the above-mentioned operator. The box body is provided with a receiving space, and the operator is detachably arranged in the receiving space. The specific structure of the operator refers to the above embodiment. Since the inverter adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0052] Specifically, detachably installing the operator in the receiving space can, on the one hand, install the operator on the inverter for use as a control panel, and on the other hand, the operator can be detached to facilitate the worker to remotely control the inverter. In a specific embodiment, the operator is installed in the receiving space by means of bolt connection. In addition, the operator can also be installed in the receiving space by means of snap connection.

[0053] The above are only exemplary embodiments of the present utility model, and do not limit the patent scope of the present utility model accordingly. Any equivalent structural transformation made under the technical concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included in the patent protection scope of the present utility model.

Claims

1. An operator, characterized in that, Comprising: A housing assembly, the housing assembly includes a housing, a cover body and a pressing plate disposed on the housing. The cover body and the housing enclose to form a receiving cavity, and the pressing plate is disposed in the receiving cavity; A first button, a plurality of second buttons and a plurality of third buttons. The shapes of the first button, the second buttons and the third buttons are different from each other. They are all disposed on the pressing plate and protrude from the housing. The second buttons are annularly disposed outside the first button, and each of the third buttons is disposed outside the second buttons; A circuit board, the circuit board is detachably disposed in the receiving cavity through a clamping member, and buttons are disposed at positions of the circuit board corresponding to the first button, the second buttons and the third buttons.

2. The manipulator according to claim 1, wherein The first button is one of a circular block and a square block, the second button is a sector block, and the third button is the other of a circular block and a square block; each of the second buttons is gradually expanded or gradually contracted from a side close to the first button to a side far from the first button.

3. The manipulator according to claim 1, characterized in that, Both the first button and the second buttons have a pressing surface, and the pressing surface protrudes in a direction away from the housing assembly or is recessed in a direction close to the housing assembly.

4. The manipulator according to claim 1, characterized in that, Slots are opened on both sides of the circuit board. The clamping member includes a plurality of clamping blocks. Each clamping block is disposed at a position of the housing corresponding to the slot, and each clamping block is clamped in the corresponding slot.

5. The manipulator according to claim 1, characterized in that, The housing is provided with a positioning pin, and the circuit board is provided with a pin hole. The positioning pin passes through the pin hole.

6. The manipulator according to claim 1, characterized in that, The housing is provided with a positioning post, and the pressing plate is provided with a positioning hole. The positioning post passes through the positioning hole.

7. The manipulator according to claim 1, characterized in that, The circuit board is provided with an external module, and an external hole is opened at a position of the housing corresponding to the external module. The external module passes through the external hole; the housing is provided with a movable blocking block, and the blocking block can block the external hole.

8. The manipulator according to claim 1, characterized in that, A network interface protruding from the cover body is disposed on the circuit board.

9. The manipulator according to any one of claims 1 to 8, characterized in that, The operator further includes a display window plate. The circuit board is provided with a display module, and an observation hole is opened at a position of the housing corresponding to the display module. The display window plate is disposed at the observation hole.

10. A frequency converter, characterized in that, Comprising: A box body, the box body is provided with an accommodating space; The operator according to any one of claims 1 to 9, the operator is detachably disposed in the accommodating space.