Industrial endoscopic device

Abstract

The utility model provides an industrial endoscopic device which comprises a shell and a push rod structure arranged in the shell, the push rod structure comprises a steering assembly, a steering arm assembly, a support assembly, a driving plate assembly, a lock catch buffering assembly, a first connecting piece and a second connecting piece, the support assembly is provided with a sliding rail, and the sliding rail is provided with a sliding groove. The lock catch buffering assembly is movably arranged in the sliding rail. The drive plate assembly is arranged at one end of the support assembly and connected to the lock catch buffering assembly through a first connecting piece. The steering assembly is connected to the drive plate assembly through the steering arm assembly. The lock catch buffer assembly is connected to the wire outlet end of the support assembly through the second connecting piece. According to the utility model, through reasonable and efficient structural optimization design, a foundation is provided for ensuring that the front-end camera realizes smooth planar motion, the stability and reliability of industrial endoscopic decoration are effectively improved, the assembly efficiency of products is improved, and the actual application requirements of the products are met.

Description

Technical Field

[0001] The utility model relates to an industrial endoscope device, in particular to a stable and reliable industrial endoscope device. Background Art

[0002] In the field of industrial inspection and maintenance, an endoscope is a commonly used tool for inspecting areas that are difficult to directly observe, such as various industrial application scenarios like pipelines, engines, and boilers, etc. It allows the operator to guide the front end of the endoscope deep into the area to be inspected by controlling the movement of the push rod. Due to the limitations of the use environment, there are very high requirements for the structural stability and reliability of the push rod of the endoscope, which is also the key point and technical difficulty of the industrial endoscope device. However, there are some limitations in the structural design of the existing industrial endoscope devices. As a result, during the pushing operation, problems such as jamming or insufficient thrust may occur due to design defects, so that the smooth planar movement of the front-end camera cannot be achieved, and its stable and reliable performance cannot be well guaranteed; even problems such as the push rod twisting or offsetting may occur, and the product assembly efficiency is low, which cannot well meet the actual application requirements of the product. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide an industrial endoscope device. Through the optimized design of the structure, the above technical problems of the prior art are solved, providing a basis for ensuring the smooth planar movement of the front-end camera, effectively improving the stable performance and reliable performance of the industrial endoscope decoration, and improving the product assembly efficiency to meet the actual application requirements of the product.

[0004] To this end, the utility model provides an industrial endoscope device, including: a housing and a push rod structure disposed in the housing. The push rod structure includes a steering component, a steering arm component, a bracket component, a dial component, a lock and buffer component, a first connecting member, and a second connecting member. A slide rail is disposed in the bracket component, and the lock and buffer component is movably disposed in the slide rail; the dial component is disposed at one end of the bracket component and at one end of the slide rail, and the lock and buffer component is connected to the dial component through the first connecting member; the steering component is connected to the dial component through the steering arm component; the lock and buffer component is connected to the wire outlet end of the bracket component through the second connecting member, and the wire outlet end is disposed at the other end of the bracket component.

[0005] A further improvement of the utility model is that the lock and buffer component includes a first lock, a second lock, and a third lock. The second lock and the third lock are respectively movably disposed at both ends of the first lock. The first lock is movably disposed in the slide rail. The first connecting member is connected to the second lock, and the second connecting member is connected to the third lock.

[0006] A further improvement of the present utility model lies in that the latch buffer assembly further includes a first latch fixing member and a second latch fixing member. The first connecting member is movably connected to the second latch through the first latch fixing member, and the second connecting member is movably connected to the third latch through the second latch fixing member.

[0007] A further improvement of the present utility model lies in that the push rod structure further includes a spring tube. The bracket assembly is further provided with a guide rail. The guide rail is arranged at one end of the slide rail far away from the dial assembly and is communicated with the slide rail. The spring tube is arranged in the guide rail, and the second connecting member is sleeved in the spring tube.

[0008] A further improvement of the present utility model lies in that the width of the guide rail is smaller than the width of the slide rail, and the second connecting member and the spring tube are arranged in parallel in the guide rail.

[0009] A further improvement of the present utility model lies in that the number of the slide rails is two, and the two slide rails are arranged between the dial assembly and the guide rail at a first preset angle. The number of the guide rails is two, and the two guide rails are arranged at the wire outlet end of the slide rail at a second preset angle.

[0010] A further improvement of the present utility model lies in that the first preset angle is greater than the second preset angle.

[0011] A further improvement of the present utility model lies in that the push rod structure further includes a guiding fixing member, and the guiding fixing member is arranged between the slide rail and the guide rail.

[0012] A further improvement of the present utility model lies in that the dial assembly is provided with a connecting fixing member, and the connecting fixing member is connected to the first connecting member.

[0013] A further improvement of the present utility model lies in that the housing includes a first housing and a second housing which are connected to each other. The steering assembly penetrates through the first housing. It further includes a control main board, a mounting bracket, a display module, a key circuit board and keys. The control main board is arranged on the push rod structure. The display module is arranged on the control main board through the mounting bracket and is connected to the control main board. The keys are arranged on the first housing, the keys are arranged on the mounting bracket through the key circuit board, and the key circuit board is connected to the control main board.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows: An optimized push rod structure is provided in the housing. A slide rail is provided in the bracket assembly of the push rod structure, and the lock catch buffer assembly is movably arranged in the slide rail. The dial assembly is arranged at one end of the bracket assembly and is connected to the lock catch buffer assembly through the first connecting piece, and the steering assembly is connected to the dial assembly through the steering arm assembly. Thus, under the pushing action of the steering assembly, the dial assembly can be driven to rotate coaxially, avoiding problems such as the twisting or deviation of the push rod. It can also enable the lock catch buffer assembly to move in the slide rail and achieve at least two - stage buffering effects during the movement to avoid problems such as jamming or unevenness during the pushing process.

[0015] On this basis, the lock catch buffer assembly of the present utility model is further connected to the wire outlet end of the bracket assembly through the second connecting piece. The wire outlet end is arranged at the other end of the bracket assembly. Thus, a split connection structure can be achieved for different positions of the push rod structure, facilitating the rapid assembly and later maintenance of the product, and avoiding interference between the first connecting piece and the second connecting piece, enabling them to be adjusted in thickness and length adaptively according to the actual situation and requirements respectively to ensure sufficient thrust. Therefore, through reasonable and efficient structural optimization design, the present utility model well solves the above - mentioned technical problems of the prior art, provides a basis for ensuring the smooth planar movement of the front - end camera, effectively improves the stability and reliability of industrial endoscope decoration, and improves the assembly efficiency of the product, meeting the actual application requirements of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic cross - sectional structure view of the push rod structure of an embodiment of the present utility model;

[0017] Figure 2 is a schematic three - dimensional structure view of the push rod structure of an embodiment of the present utility model;

[0018] Figure 3 is a schematic three - dimensional structure view of the push rod structure of an embodiment of the present utility model from another angle;

[0019] Figure 4 is an exploded structure view of the push rod structure of an embodiment of the present utility model;

[0020] Figure 5 is Figure 4 a partial structure view in

[0021] Figure 6 is an exploded structure view of the push rod structure of an embodiment of the present utility model from another angle;

[0022] Figure 7 It is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0023] Figure 8 It is a schematic diagram of the sectional structure of an embodiment of the present utility model;

[0024] Figure 9 It is a schematic diagram of the exploded structure of an embodiment of the present utility model. Specific embodiments

[0025] In the description of the present utility model, if it involves orientation description, such as "upper", "lower", "front", "rear", "left", "right", etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. If a technical feature is referred to as "arranged", "fixed", "connected", "installed" on another technical feature, it can be directly arranged, fixed, connected on another technical feature, or indirectly arranged, fixed, connected, installed on another technical feature.

[0026] In the description of the present utility model, if it involves "several", its meaning is more than one; if it involves "multiple", its meaning is more than two; if it involves "greater than", "less than", "exceeding", it should be understood as not including the present number; if it involves "above", "below", "within", it should be understood as including the present number. If it involves "first", "second", etc., it should be understood that it is only used for the distinction of the same or similar technical feature names, and cannot be understood as implying / indicating the relative importance of the technical features, cannot be understood as implying / indicating the quantity of the technical features, nor can it be understood as implying / indicating the sequence relationship of the technical features.

[0027] The following will further elaborate on the preferred embodiments of the present utility model with reference to the accompanying drawings.

[0028] As Figures 1 to 9As shown in the figure, this embodiment provides an industrial endoscope device, including: a housing 1 and a push rod structure 2 disposed in the housing 1. The push rod structure 2 includes a steering component 21, a steering arm component 22, a bracket component 23, a dial component 24, a latch buffer component 25, a first connecting member 26, and a second connecting member 27. A slide rail 231 is provided in the bracket component 23, and the latch buffer component 25 is movably disposed in the slide rail 231; the dial component 24 is disposed at one end of the bracket component 23 and at one end of the slide rail 231, and the latch buffer component 25 is connected to the dial component 24 through the first connecting member 26; the steering component 21 is connected to the dial component 24 through the steering arm component 22; the latch buffer component 25 is connected to the wire outlet end 232 of the bracket component 23 through the second connecting member 27, and the wire outlet end 232 is disposed at the other end of the bracket component 23.

[0029] In practical applications, the pushing control process of the push rod structure 2 in this embodiment preferably includes the following steps:

[0030] Step S1, the steering component 21 rotates through the middle rotating shaft to achieve forward or backward pushing, and then drives the dial component 24 to rotate coaxially through the steering arm component 22;

[0031] Step S2, the dial component 24 drives the latch buffer component 25 through the first connecting member 26, so that the latch buffer component 25 moves in the slide rail 231. Whether it is pushed forward or backward, the latch buffer component 25 can achieve a certain buffer movement in the slide rail 231 and achieve at least two - stage buffer effects during the movement process;

[0032] Step S3, during the movement of the latch buffer component 25, it drives the second connecting member 27 to achieve wire outlet control to control the front - end camera connected through structures such as a snake tube.

[0033] The housing 1 in this embodiment refers to the housing of the industrial endoscope device. In the push rod structure 2, the steering component 21 is connected to the dial component 24 through the steering arm component 22. The steering component 21 refers to a push rod structure for achieving forward or backward movement through steering, and preferably has anti - slip patterns; the number of the steering arm components 22 is preferably two, symmetrically disposed on both sides of the bracket component 23 and rotatably connected to the dial component 24 coaxially. The dial component 24 also preferably includes a left dial and a right dial symmetrically disposed on both sides. As Figures 4 to 6As shown, preferably, a rotating shaft 221 with a flat outer and round inner shape is provided in the middle of the steering arm assembly 22. This rotating shaft 221 with a flat outer and round inner shape is connected to the rotating hole 242 of the dial assembly 24 and fixed by structures such as a pin 210. The rotating hole 242 is also preferably in the shape of a flat outer and round inner, so that while ensuring coaxial rotation, it can also achieve good anti-slip and anti-fool functions. It should be noted that during the forward or backward push of the steering assembly 21, the steering arm assembly 22 and the dial assembly 24 can achieve good coaxial rotation. On this basis, the steering assembly 21 can smoothly achieve forward or backward push operations without side offset, effectively avoiding problems such as torsion or offset of the push rod structure 2, ensuring the consistency of the thrust, providing a basis for ensuring smooth planar movement of the front-end camera, and facilitating the improvement of the product's service life.

[0034] It is also worth noting that in this embodiment, an optimized push rod structure 2 is provided in the housing 1. A slide rail 231 is provided in the bracket assembly 23 of the push rod structure 2, and the lock buffer assembly 25 is movably arranged in the slide rail 231 to form a buffer structure; the dial assembly 24 is arranged at one end of the bracket assembly 23 and connected to the lock buffer assembly 25 through the first connecting member 26, and the steering assembly 21 is connected to the dial assembly 24 through the steering arm assembly 22. Thus, under the pushing action of the steering assembly 21, the dial assembly 24 can be driven to achieve coaxial rotation, avoiding problems such as torsion or offset of the push rod; it can also enable the lock buffer assembly 25 to move in the slide rail 231 and achieve at least two-stage buffer effects during the movement to avoid problems such as jamming or unevenness during the push.

[0035] On this basis, the latch buffer assembly 25 in this embodiment is connected to the wire outlet end 232 of the bracket assembly 23 through the second connecting member 27. The wire outlet end 232 is arranged at the other end of the bracket assembly 23, so that a split connection structure can be realized for different positions of the push rod structure 2, which is convenient for the rapid assembly and later maintenance of the product, and avoids interference between the first connecting member 26 and the second connecting member 27, enabling them to be adjusted in thickness and length adaptively according to the actual situation and requirements respectively to ensure sufficient thrust. That is to say, in practical applications, the first connecting member 26 and the second connecting member 27 are two independent connecting structures. For example, two steel wires with different thicknesses and lengths can be used according to the actual situation and requirements. Therefore, through reasonable and efficient structural optimization design in this embodiment, the above technical problems of the prior art are well solved, ensuring that the following of the front camera can well realize smooth planar motion, effectively ensuring the stability and reliability of industrial endoscope decoration, improving the assembly efficiency of the product, and meeting the actual application requirements of the product. The front camera can adopt an existing structure, so it is not drawn in this embodiment. The front camera is connected to the wire outlet end 232 through a connecting pipe, such as a metal hose, a snake tube or a snake tube spring tube, etc.

[0036] More specifically, as Figure 1 and Figures 4 to 6 shown, the latch buffer assembly 25 in this embodiment preferably includes a first latch 251, a second latch 252 and a third latch 253. The second latch 252 and the third latch 253 are respectively movably arranged at both ends of the first latch 251. The first latch 251 is movably arranged in the slide rail 231. The first connecting member 26 is connected to the second latch 252, and the second connecting member 27 is connected to the third latch 253. When the latch buffer assembly 25 moves in the slide rail 231, the second latch 252 and the third latch 253 respectively achieve a first-level buffering effect with the first latch 251, and the first latch 251 and the slide rail 231 achieve another-level buffering effect. The first latch 251, the second latch 252 and the third latch 253 are all movable latch structures.

[0037] That is to say, in addition to the first latch 251 being able to move in the slide rail 231 to form a buffer structure, the second latch 252 and the third latch 253 in this embodiment can also move in the first latch 251 itself to form another-level buffer structure, so as to be able to well achieve a two-level buffering effect, making the push control of the product have a highly reliable buffering effect, the push control is smooth and stable, without jamming, and providing a good basis for the smooth planar motion of the front camera.

[0038] More preferably, asFigure 1 and Figures 4 to 6 As shown in Figures 4 to 6 , the latch buffer assembly 25 in this embodiment further includes a first latch fixing member 254 and a second latch fixing member 255. The first connecting member 26 is movably connected to the second latch 252 through the first latch fixing member 254, and the second connecting member 27 is movably connected to the third latch 253 through the second latch fixing member 255. When the latch buffer assembly 25 moves in the slide rail 231, a further level of buffering effect is achieved between the first latch fixing member 254 and the second latch 252, and between the second latch fixing member 255 and the third latch 253. Both the first latch fixing member 254 and the second latch fixing member 255 are fixing members of the latch structure.

[0039] That is to say, in addition to the two - stage buffering effect described above, a third - stage buffering structure is also achieved between the first latch fixing member 254 and the second latch 252, and between the second latch fixing member 255 and the third latch 253 in this embodiment, further ensuring the reliability and smoothness of the pushing control, and providing a better basis for the smooth and seamless steering control of the front - end camera.

[0040] During the actual assembly process, only need to assemble the first latch 251 in the slide rail 231, assemble the second latch 252 and the third latch 253 in the first latch 251, assemble the first latch fixing member 254 connected to the first connecting member 26 in the second latch 252, and assemble the second latch fixing member 255 connected to the second connecting member 27 in the third latch 253, then the assembly is completed. The assembly process is a large - set - small movable sleeve structure, which is simple and efficient.

[0041] The first connecting member 26 and the second connecting member 27 in this embodiment are preferably made of steel wires with respective thicknesses and lengths adapted to each other. Therefore, different actual application requirements can be well met. By default, the first connecting member 26 needs to directly perform the pushing operation and is subjected to greater force, so its diameter is larger than that of the second connecting member 27. The length of the first connecting member 26 is preferably calculated according to the radius of the dial assembly 24. The length of the first connecting member 26 from the center point of the dial assembly 24 to the longest stretchable stroke on both sides is the bending angle of the front - end camera. Therefore, the first connecting member 26 with different lengths can be adapted according to different bending angle requirements and the size of the dial assembly 24.

[0042] Such as Figure 4 and Figure 5As shown, the push rod structure 2 in this embodiment further includes a spring tube 28. The bracket assembly 23 is further provided with a guide rail 233. The guide rail 233 is arranged at one end of the slide rail 231 away from the dial assembly 24 and communicates with the slide rail 231. The spring tube 28 is arranged in the guide rail 233, and the second connecting member 27 is sleeved in the spring tube 28. The guide rail 233 is a fixing groove for the spring tube 28, mainly used to fix the spring tube 28 from moving in the guide rail 233. The spring tube 28 and the second connecting member 27 are kept as parallel as possible to avoid the second connecting member 27 (such as a steel wire) from rubbing against the external structure and affecting the actual use effect, and reducing the required thrust force. Through the arrangement of the guide rail 233 and the spring tube 28 in this embodiment, the guiding and buffering effects on the second connecting member 27 can be realized at one end close to the wire outlet end 232, so that at the end of the wire outlet end 232, the two steel wires of the second connecting member 27 are connected to the front-end camera as parallel as possible.

[0043] Preferably, the width of the guide rail 233 in this embodiment is smaller than the width of the slide rail 231, so as to better meet the assembly requirements of the multi-stage buffering structure and ensure the size of the wire outlet end 232. The second connecting member 27 and the spring tube 28 are arranged in parallel in the guide rail 233 to avoid unnecessary frictional force and reduce the thrust force required by the device.

[0044] As Figure 1 , Figure 4 and Figure 5 As shown, the number of the slide rails 231 in this embodiment is two. The two slide rails 231 are arranged between the dial assembly 24 and the guide rail 233 at a first preset angle. The number of the guide rails 233 is two. The two guide rails 233 are arranged at the wire outlet end of the slide rail 231 at a second preset angle. That is, there is a certain angle between the two slide rails 231, and there is also a certain angle between the two guide rails 233, rather than a parallel structure, so as to better realize the guiding effect after the dial assembly 24. More preferably, the first preset angle in this embodiment is greater than the second preset angle. Therefore, through the decrease of the angle, the second connecting member 27 can tend to be parallel at a smaller angle compared with the first connecting member 26, which is convenient for providing a better guiding basis for the wire outlet at the rear end.

[0045] The push rod structure 2 in this embodiment further includes a guiding and fixing member 29. The guiding and fixing member 29 is arranged between the slide rail 231 and the guide rail 233 to realize the guiding and fixing effects on the second connecting member 27, ensure that the second connecting member 27 can be sleeved in the spring tube 28 as parallel as possible, and facilitate reducing the frictional force. In practical applications, lubricants or lubricating oils can also be filled inside it to reduce its frictional force and ensure the sealing effect.

[0046] AsFigure 5 As shown, the dial assembly 24 in this embodiment is provided with a connecting and fixing member 241. The connecting and fixing member 241 is used to hook the first connecting member 26 between the left dial and the right dial on both sides. The connecting and fixing member 241 is connected to the first connecting member 26 to better ensure its coaxial rotation effect.

[0047] As Figures 7 to 9 As shown, the housing 1 in this embodiment includes a first housing 11 and a second housing 12 connected to each other. The steering assembly 21 is penetratively arranged on the first housing 11. It further includes a control main board 3, a mounting bracket 4, a display module 5, a key circuit board 6 and keys 7. The control main board 3 is arranged on the push rod structure 2, so as to reasonably utilize the push rod structure 2 as the support and fixing structure of the control main board 3, and improve the space utilization rate of the device. The display module 5 is arranged on the control main board 3 through the mounting bracket 4 and is connected to the control main board 3. Thus, the display module 5 above can be fixed and protected through the structure of the mounting bracket 4. The display module 5 is preferably a display screen. The keys 7 are arranged on the first housing 11. The keys 7 are arranged on the mounting bracket 4 through the key circuit board 6, and the key circuit board 6 is connected to the control main board 3, providing a good basis for enriching the key control function.

[0048] The above specific implementation manners are the preferred implementation manners of the present invention, and do not limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific implementation manner. All equivalent changes made according to the shape and structure of the present invention are within the protection scope of the present invention.

Claims

1. An industrial endoscopy device, characterized in that: include: A housing (1) and a push rod structure (2) disposed in the housing (1), the push rod structure (2) comprising a steering assembly (21), a steering arm assembly (22), a bracket assembly (23), a dial assembly (24), a lock buffer assembly (25), a first connecting member (26) and a second connecting member (27), a slide rail (231) being disposed in the bracket assembly (23), the lock buffer assembly (25) being movably disposed in the slide rail (231); the dial assembly (24) being disposed in the bracket assembly (23), and a first connecting member (26) and a second connecting member (27) being disposed in the first connecting member (26) and a second connecting member (27) The locking buffer assembly (25) is connected to one end of the bracket assembly (23) and is arranged at one end of the slide rail (231); the locking buffer assembly (25) is connected to the dial assembly (24) via the first connecting member (26); the steering assembly (21) is connected to the dial assembly (24) via the steering arm assembly (22); the locking buffer assembly (25) is connected to an outlet end (232) of the bracket assembly (23) via the second connecting member (27); the outlet end (232) is arranged at the other end of the bracket assembly (23).

2. The industrial endoscopy device according to claim 1, characterized in that: The lock buckle buffer assembly (25) comprises a first lock buckle (251), a second lock buckle (252) and a third lock buckle (253); the second lock buckle (252) and the third lock buckle (253) are respectively movably arranged at two ends of the first lock buckle (251); the first lock buckle (251) is movably arranged in the slide rail (231); the first connecting member (26) is connected to the second lock buckle (252); and the second connecting member (27) is connected to the third lock buckle (253).

3. The industrial endoscopy device according to claim 2, characterized in that: The lock buffer assembly (25) further comprises a first lock fixing member (254) and a second lock fixing member (255), the first connecting member (26) being movably connected to the second lock (252) via the first lock fixing member (254), and the second connecting member (27) being movably connected to the third lock (253) via the second lock fixing member (255).

4. The industrial endoscope device according to any one of claims 1 to 3, characterized in that: The push rod structure (2) further comprises a spring tube (28); the bracket assembly (23) is further provided with a guide rail (233); the guide rail (233) is arranged at an end of the slide rail (231) away from the dial assembly (24) and is in communication with the slide rail (231); the spring tube (28) is arranged in the guide rail (233); and the second connecting member (27) is sleeved in the spring tube (28).

5. The industrial endoscopy device according to claim 4, characterized in that: The width of the guide rail (233) is smaller than the width of the slide rail (231), and the second connecting member (27) and the spring tube (28) are arranged in parallel in the guide rail (233).

6. The industrial endoscopy device according to claim 4, characterized in that: There are two slide rails (231), and the two slide rails (231) are arranged between the dial assembly (24) and the guide rail (233) at a first preset angle; there are two guide rails (233), and the two guide rails (233) are arranged at the outlet end of the slide rail (231) at a second preset angle.

7. The industrial endoscope device according to claim 6, characterized in that: The first preset angle is greater than the second preset angle.

8. The industrial endoscopy device according to claim 4, characterized in that: The push rod structure (2) further comprises a guide fixing member (29), wherein the guide fixing member (29) is arranged between the slide rail (231) and the guide rail (233).

9. The industrial endoscope device according to any one of claims 1 to 3, characterized in that: The dial assembly (24) is provided with a connecting and fixing member (241), and the connecting and fixing member (241) is connected to the first connecting member (26).

10. The industrial endoscope device according to any one of claims 1 to 3, characterized in that: The housing (1) comprises a first housing (11) and a second housing (12) connected to each other, wherein the steering assembly (21) is arranged through the first housing (11); the housing also comprises a control mainboard (3), a mounting frame (4), a display module (5), a key circuit board (6) and a key (7); the control mainboard (3) is arranged on the push rod structure (2); the display module (5) is arranged on the control mainboard (3) through the mounting frame (4) and is connected to the control mainboard (3); the key (7) is arranged on the first housing (11), the key (7) is arranged on the mounting frame (4) through the key circuit board (6), and the key circuit board (6) is connected to the control mainboard (3).

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