Valve box device

Abstract

The invention discloses a valve box device which comprises a valve block, a sensing element and a cover plate, the valve block is provided with a sensing channel and a mounting channel, the sensing channel is communicated with the mounting channel, the sensing element is located in the mounting channel, and at least part of the cover plate is also located in the mounting channel. The cover plate and the valve block are fixedly connected or connected in a limiting mode and used for pressing and fixing the sensing element, the sensing element can collect signals in the sensing channel, and the cover plate and the valve block are injection molding parts. The valve box device is relatively simple in structure, small-sized design can be achieved, and cost is relatively low.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of valve box device, and particularly relates to a valve box device. BACKGROUND

[0002] The valve box device comprises a valve block, an electromagnetic valve and a signal sensor, and the electromagnetic valve and the signal sensor are both installed inside the valve block. In the related art, the signal sensor is a whole sensor structure, and the number of its parts is relatively large, the processing is complex, and the volume is large, which occupies a large space during installation, and further causes the valve box device to be large in size. SUMMARY

[0003] The purpose of the present application is to provide a valve box device which is relatively simple in structure, small in size and low in cost.

[0004] To solve the above technical problems, the present application provides a valve box device, which comprises a valve block, a sensing element and a cover plate, the valve block is provided with a sensing channel and a mounting channel, the sensing channel and the mounting channel are communicated, the sensing element is located in the mounting channel, at least part of the cover plate is also located in the mounting channel, the cover plate and the valve block are fixedly connected or limitingly connected, and are used for tightly fixing the sensing element, the sensing element can collect signals in the sensing channel, and the cover plate and the valve block are both injection molded parts.

[0005] The valve box device provided by the present application mainly retains the sensing element which plays a core detection role in the whole signal sensor in the related art, and can directly install the sensing element as an independent part inside the valve block, so that the shell and other parts of the whole signal sensor can be omitted, the structure can be simplified, the installation space can be reduced, and the miniaturization design of the valve box device can be facilitated, and the cost can be reduced.

[0006] In addition, the cover plate and the valve block are both injection molded parts, so that the molding of the cover plate and the valve block can be relatively easy, especially the molding of some complex structures on the valve block can be relatively easy, and the cover plate and the valve block can be conveniently processed, and the weight of the cover plate and the valve block can be reduced, so as to facilitate the light weight of the valve box device, and the cost of the valve box device can be further reduced.

[0007] Optionally, the mounting channel includes a first channel segment and a second channel segment. The first channel segment has a first peripheral wall and a first end wall, and the second channel segment has a second peripheral wall and a second end wall. The second channel segment is located on the side of the first channel segment facing the sensing channel. At least a portion of the cover plate is located within the first channel segment, and the cover plate and the first end wall abut against each other axially. At least a portion of the sensing element is located within the second channel segment. The sensing element has a first axial end face and a second axial end face disposed opposite to each other. The first axial end face abuts against the cover plate, and the second axial end face abuts against the second end wall.

[0008] Optionally, along a direction away from the second end wall, a portion of the sensing element protrudes from the first end wall, the cover plate has a stepped portion, the stepped portion has a stepped peripheral wall portion and a stepped end wall portion, and the cover plate abuts against the first axial end face through the stepped end wall portion.

[0009] Optionally, the cover plate and the first peripheral wall portion are interference-fitted.

[0010] Optionally, it further includes a shielding portion and a filling portion, wherein the shielding portion is connected to the cover plate and the valve block, and is used to shield the joint between the cover plate and the first peripheral wall portion, and the filling portion is capable of at least partially covering the cover plate, and the filling portion is connected to the valve block.

[0011] Optionally, the mounting channel further includes a third channel segment having a third peripheral wall portion and a third end wall portion, the third channel segment being located on the side of the second channel segment facing the sensing channel; it also includes a sealing element located in the third channel segment and axially press-fitted between the second axial end face and the third end wall portion.

[0012] Optionally, the valve block includes a peripheral plate portion and a base plate portion, the base plate portion being located at one axial end of the peripheral plate portion, the base plate portion including a base plate body and a base plate protrusion, the base plate protrusion and the peripheral plate portion being located on the same axial side of the base plate body, and at least a portion of the mounting channel being formed on the base plate protrusion.

[0013] Optionally, it also includes an electronic control component, which is mounted on the valve block. The cover plate has a signal connection part inserted through it. The sensing element is equipped with a signal connection terminal. One end of the signal connection part is connected to the signal connection terminal, and the other end of the signal connection part is connected to the electronic control component.

[0014] Optionally, the cover plate includes a top cover portion, a cylindrical portion, and a protrusion portion, wherein the cylindrical portion and the protrusion portion are respectively located on both axial sides of the top cover portion, and the signal connection portion passes through the top cover portion and the protrusion portion.

[0015] Optionally, a connecting head having a connecting passage is further included, the connecting head is installed on the valve block, and the connecting passage and the sensing passage are communicated. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A split structure diagram of the valve box device provided by the present application;

[0017] Figure 2 A partial sectional view of the valve box device provided by the present application;

[0018] Figure 3 A connection structure diagram of the middle bottom plate part, the sensing element and the cover plate; Figure 2

[0019] A structure schematic diagram of the middle bottom plate part; Figure 4 Figure 3 A structure schematic diagram of the middle sensing element;

[0020] Figure 5 Figure 3 A structure schematic diagram of the middle sensing element;

[0021] Figure 6 A structure schematic diagram of the middle cover plate and the signal connecting part; Figure 3

[0022] A three-dimensional diagram of the cover plate part and the signal connecting part; Figure 7

[0023] Figure 8 A partial structure diagram of the valve block.

[0024] The following is a description of the reference signs:

[0025] 1 valve block, 11 sensing passage, 12 installation passage, 121 first passage segment, 121a first peripheral wall part, 121b first end wall part, 122 second passage segment, 122a second peripheral wall part, 122b second end wall part, 123 third passage segment, 123a third peripheral wall part, 123b third end wall part, 13 peripheral plate part, 14 bottom plate part, 141 bottom plate body, 142 bottom plate protrusion;

[0026] 2 sensing element, 21 first axial end face, 22 second axial end face, 23 signal connecting terminal, 24 detection core body;

[0027] 3 cover plate, 31 top cover part, 32 cylindrical part, 321 step part, 321a step peripheral wall part, 321b step end wall part, 322 interference segment, 33 protrusion part;

[0028] 4 sealing element;

[0029] 5 electric control part; ​​​

[0030] 6 signal connection portion;

[0031] 7 connector;

[0032] 8 electromagnetic valve;

[0033] 9 connector. DETAILED DESCRIPTION

[0034] In order to make the technical personnel of the art better understand the technical solutions of the present application, the present application will be further described in detail below in conjunction with the drawings and specific embodiments.

[0035] In the embodiments of the present application, the terms "first", "second", "third" are only used for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features.

[0036] In the description of the embodiments of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, "connection" can be detachable connection, or can be non-detachable connection; can be direct connection, or can be indirect connection through intermediate medium.

[0037] In the description of the embodiments of the present application, the terms "including", "containing" or any other variants thereof are intended to cover non-exclusive containing, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitation, the element defined by the statement "including a" does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0038] As described in the background section, in the related art, the signal sensor used in the valve box device is generally a whole sensor structure, which includes a signal connecting part, an insulating sheath, a shell, a sealing groove, a sealing ring, a sensing channel and a sensing element, etc., the sensing element is packaged in the shell, the sensing channel is arranged in the shell and can be connected with the sensing element to facilitate the sensing element to collect external signals, the insulating sheath is arranged in the shell, the signal connecting part can be inserted in the shell and the insulating sheath and can be signal connected with the sensing element, the sealing groove can be arranged in the shell, and the sealing ring can be arranged in the sealing groove to realize the sealing between the signal sensor and the valve block. In this scheme, the structure of the valve box device is too complex, and the volume is also large, when installed in the valve block, it will occupy a relatively large space, which is not conducive to the miniaturization design of the valve box device, and also causes the cost of the valve box device to be too high.

[0039] In view of this, the embodiment of the present application provides a valve box device, which disassembles the whole signal sensor in the prior art, mainly retains the sensing element which plays a core detection role, and installs the sensing element as an independent component directly in the interior of the valve block, so that the shell and other components can be omitted, the structure form of the signal sensor can be greatly simplified, and the installation space occupied by the signal sensor can be reduced, which is conducive to the miniaturization design of the valve box device, and also can reduce the cost.

[0040] Specifically, please refer to Figures 1-8 , Figure 1 the split structure diagram of the valve box device provided by the present application, Figure 2 the partial sectional view of the valve box device provided by the present application, Figure 3 the connection structure diagram of the bottom plate part, the sensing element and the cover plate in Figure 2 , Figure 4 the structure schematic diagram of the bottom plate part in Figure 3 , Figure 5 the structure schematic diagram of the sensing element in Figure 3 , Figure 6 the structure schematic diagram of the cover plate and the signal connecting part in Figure 3 , Figure 7 the perspective view of the cover plate part and the signal connecting part, Figure 8 the partial structure diagram of the valve block.

[0041] As shown in Figures 1-3 , the present application also provides a valve box device, which can be applied to a vehicle and can detect the internal pressure of a suspension system to realize pressure regulation of air springs in the suspension system, comprising a valve block 1, a sensing element 2, a cover plate 3, an electric control component 5 and a solenoid valve 8.

[0042] The valve block 1 is a structural body of the valve box device, and includes a peripheral plate portion 13 and a bottom plate portion 14. The peripheral plate portion 13 can be located on one side of the bottom plate portion 14 in the thickness direction, and the peripheral plate portion 13 and the bottom plate portion 14 can be integrally formed. The peripheral plate portion 13 and the bottom plate portion 14 can enclose a receiving chamber for receiving the electric control component 5 and the electromagnetic valve 8, etc. The electric control component 5 can be a printed circuit board (PCB), and a corresponding control circuit, etc. can be arranged on the electric control component 5. The number of electromagnetic valves 8 can be two or more, for example, five. Each electromagnetic valve 5 can be combined to form an electromagnetic valve group. The valve block 1 is also provided with a connector 9, which can be connected to the electric control component 5 and an external control unit. The external control unit can be connected to the electric control valve group.

[0043] The bottom plate portion 14 can be provided with a sensing channel 11 and a mounting channel 12, and the sensing channel 11 and the mounting channel 12 can be connected. The sensing element 2 can be located in the mounting channel 12, and at least part of the cover plate 3 is also located in the mounting channel 12. The cover plate 3 is connected to the valve block 1 and can be used to press and fix the sensing element 2, so that the independent assembly of the sensing element 2 in the valve block 1 can be achieved. At the same time, the cover plate 3 can also play a certain protective role for the sensing element 2. The sensing element 2 is used to collect signals in the sensing channel 11.

[0044] The cover plate 3 and the valve block 1 are both injection molded parts. In this way, the molding of the cover plate 3 and the valve block 1 can be relatively easy, especially the molding of some complex structures on the valve block 1 can be relatively easy, which can facilitate processing, and at the same time, the weight of the cover plate 3 and the valve block 1 can be reduced, which is conducive to realizing the light weight of the valve box device and can reduce the cost of the valve box device.

[0045] In some optional implementations, as shown in Figure 3 and Figure 4 The mounting channel 12 can include a first channel segment 121 and a second channel segment 122, and the second channel segment 122 is located on the side of the first channel segment 121 facing the sensing channel 11. The first channel segment 121 can have a first peripheral wall portion 121a and a first end wall portion 121b. The second channel segment 122 can have a second peripheral wall portion 122a and a second end wall portion 122b. The first channel segment 121 and the second channel segment 122 can be combined to form a stepped hole, and the hole diameter of the first channel segment 121 can be greater than that of the second channel segment 122. Therefore, the first end wall portion 121b corresponds to the stepped surface between the first channel segment 121 and the second channel segment 122.

[0046] In combination with Figure 5 The sensing element 2 can have a first axial end face 21 and a second axial end face 22 arranged opposite to each other, and the first axial end face 21 and the second axial end face 22 can be arranged opposite to each other.

[0047] In the specific installation, at least a part of the inductive element 2 can be located in the second channel section 122, the second axial end surface 22 can abut against the second end wall portion 122b in the axial direction to preliminarily define the axial installation position of the inductive element 2 in the valve block 1; at least a part of the cover plate 3 can be located in the first channel section 121, the cover plate 3 can abut against the first end wall portion 121b in the axial direction and can abut against the first axial end surface 21 of the inductive element 2; and the cover plate 3 can be connected to the valve block 1. In this way, the inductive element 2 can be press-fitted in the valve block 1 through the cooperation of the cover plate 3 and the second end wall portion 122b, and the overall structure is relatively simple; and the axial installation position of the cover plate 3 in the installation channel 12 can be defined through the axial abutment between the cover plate 3 and the first end wall portion 121b, so that the cover plate 3 can generate a relatively small pressing force on the inductive element 2, and the inductive element 2 can be prevented from being damaged.

[0048] In combination Figure 3 and Figure 6 , a part of the inductive element 2 can protrude from the first end wall portion 121b in a direction away from the second end wall portion 122b, and at this time, the first axial end surface 21 can be higher than the first end wall portion 121b. In this implementation, the cover plate 3 can have a stepped portion 321, the stepped portion 321 can have a stepped peripheral wall portion 321a and a stepped end wall portion 321b, the stepped portion 321 can be used to accommodate the part of the inductive element 2 protruding from the first end wall portion 121b, and the cover plate 3 can abut against the first axial end surface 21 through the stepped end wall portion 321b to cooperate with the second end wall portion 122b to fix the inductive element 2.

[0049] It should be understood that the inductive element 2 can also not protrude from the first end wall portion 121b, for example, the first axial end surface 21 and the first end wall portion 121b can also be flush, at this time, the end surface of the cover plate 3 abutting against the first end wall portion 121b can also abut against the first axial end surface 21; for another example, when the axial dimension of the inductive element 2 is relatively small, the first axial end surface 21 can also be recessed in the second channel section 122, at this time, the end surface of the cover plate 3 abutting against the first end wall portion 121b can also be provided with a protruding portion, the protruding portion can extend into the second channel section 122, and the cover plate 3 can abut against the first axial end surface 21 through the protruding portion.

[0050] In addition, in actual applications, the first channel segment 121 can also be absent, i.e., the first peripheral wall portion 121a and the second peripheral wall portion 122a can be flush, at this time, the cover plate 3 does not need to abut against the first end wall portion 121b, and the cover plate 3 can directly abut against the first axial end face 21, and the structure of the mounting channel 12 can be simpler. For ease of description, the following embodiments of the present application are described by taking the scheme in which the mounting channel 12 includes the first channel segment 121 as an example, but it should be understood that for the scheme in which the first channel segment 121 is absent, the first peripheral wall portion 121a involved in the following description can be replaced by the second peripheral wall portion 122a.

[0051] The cover plate 3 and the first peripheral wall portion 121a can be interference-fitted, so that the cover plate 3 and the first peripheral wall portion 121a do not need to be provided with mounting structures in the form of threads and the like, and the structure of the cover plate 3 and the mounting channel 12 can be relatively simple. In combination with Figure 6 In the axial direction, the cover plate 3 can be provided as an interference segment 322 only in a local part, so as to control the size of the interference fit and reduce the assembly difficulty of the cover plate 3 and the mounting channel 12; of course, the cover plate 3 can also be provided as an interference segment 322 as a whole, which is also realizable.

[0052] It should be understood that in addition to the interference fit scheme, the cover plate 3 and the first peripheral wall portion 121a can also adopt other connection modes, such as clamping, gluing, threaded connection and the like, as long as the cover plate 3 and the valve block 1 can be connected, so that the cover plate 3 can press the sensing element 2, thereby realizing the fixation of the sensing element 2. Here, the relatively difficult-to-disassemble connection modes such as interference fit and gluing can be referred to as fixed connection, and the relatively easy-to-disassemble connection modes such as clamping and threaded connection can be referred to as limiting connection.

[0053] In combination with Figure 6 and Figure 7 The cover plate 3 includes a top cover portion 31, a cylindrical portion 32 and a protruding block portion 33, the cylindrical portion 32 and the protruding block portion 33 can be located on the axial two sides of the top cover portion 31, and the aforementioned step portion 321 and the interference segment 322 can be formed in the cylindrical portion 32, and the top cover portion 31 and the cylindrical portion 32 can also enclose a chamber.

[0054] The valve box device can further include a signal connecting portion 6, and the signal connecting portion 6 can be inserted between the top cover portion 31 and the protruding block portion 33. The signal connecting portion 6 can be a metal plug, one end of which can extend into the aforementioned chamber and be electrically connected to the sensing element 2, and the other end of which can extend out of the protruding block portion 33 and be electrically connected to the electric control component 5. The protruding block portion 33 can increase the covering size of the cover plate 3 for the signal connecting portion 6, thereby increasing the installation stability of the signal connecting portion 6 in the valve block 1 and improving the insulation isolation effect.

[0055] Please combine Figure 3 The inductive element 2 can be provided with a signal connection terminal 23, which can be located at the first axial end face 21 of the inductive element 2, and through which the installation direction of the inductive element 2 can be determined, thereby achieving a certain anti-reverse installation effect. The signal connection terminal 23 can be a metal spring, which is used to connect with the signal connection part 6. In actual application, the inductive element 2 can be installed first, and then the installation direction of the cover plate 3 can be adjusted according to the metal spring 35 provided on the inductive element 2, so as to ensure that the signal connection part 6 can be accurately connected with the signal connection terminal 23.

[0056] The inductive element 2 can further include a detection core 24, which can be arranged opposite to the inductive channel 11, and is used to detect the signal change in the inductive channel 11.

[0057] In some optional implementations, the valve box device provided by the application can further include a shielding part and a potting part. The shielding part can be connected with the cover plate 3 and the valve block 1, and is used to shield the joint between the cover plate 3 and the first peripheral wall part 121a. The potting part can at least partially cover the cover plate 3, and the potting part can also be connected with the valve block 1, and is used to improve the connection reliability between the cover plate 3 and the valve block 1, and the sealing performance between the cover plate 3 and the valve block 1.

[0058] The shielding part can be sealing glue or the like, which is mainly used to prevent the potting material from leaking at the joint between the cover plate 3 and the first peripheral wall part 121a. Meanwhile, the shielding part can also improve the connection reliability between the cover plate 3 and the valve block 1 to a certain extent.

[0059] In some optional implementations, as shown in Figure 3 and Figure 4 The installation channel 12 can further include a third channel segment 123, which is located on the side of the second channel segment 122 facing the inductive channel 11, and the third channel segment 123 can have a third peripheral wall part 123a and a third end wall part 123b. The second channel segment 122 and the third channel segment 123 can also combine to form a stepped hole, and the hole diameter of the second channel segment 122 can be greater than that of the third channel segment 123. Therefore, the second end wall part 122b corresponds to the stepped surface between the second channel segment 122 and the third channel segment 123.

[0060] The valve box device can further include a sealing element 4, which can be a sealing ring or the like, and which can be located in the third passage section 123 and can be axially tightly fitted between the second axial end surface 22 and the third end wall portion 123b, so as to better achieve sealing between the sensing element 2 and the valve block 1, so that the gas in the sensing passage 11 can directly flow to the sensing element 2 and is not easy to directly penetrate the valve block 1 in the axial direction, thereby facilitating normal operation of the valve box device.

[0061] In the related art, the sealing ring is arranged in a sealing groove of the housing, the valve block is provided with a passage groove, and the part of the housing in which the sealing ring is arranged is inserted into the passage groove and the sealing ring is compressed by the groove wall of the passage groove to achieve sealing. In this scheme, the machining accuracy of the housing and the valve block needs to be considered, and if the machining accuracy is not high, the sealing ring is difficult to achieve true sealing. In the embodiment of the present application, the sealing element 4 is directly arranged in the third passage section 123 and is axially compressed by the sensing element 2, and this sealing compression mode has relatively low requirements for machining accuracy, which is more conducive to ensuring sealing.

[0062] In combination with Figure 1 and Figure 8 , the bottom plate portion 14 can include a bottom plate body 141 and a bottom plate protrusion 142, the bottom plate protrusion 142 can be formed in the axial direction by the bottom plate body 141, and the bottom plate protrusion 142 and the peripheral plate portion 13 can be located on the same side of the bottom plate body 141 in the axial direction, i.e., the bottom plate protrusion 142 can be located on the side of the bottom plate body 141 facing the accommodation cavity, and at least part of the installation passage 12 can be formed in the bottom plate protrusion 142. In this way, the space on the side of the bottom plate body 141 facing the accommodation cavity can be more utilized, and the occupation of external space can be reduced.

[0063] The valve box device can further include a connector 7, which can have a connecting passage, and the connector 7 can be mounted to the valve block 1, and the connecting passage can be in communication with the sensing passage 11. Dry compressed air can enter the sensing passage 11 through the connecting passage, and the sensing element 2 can be a pressure sensing component, which can sense the pressure in the sensing passage 11 and output an electrical signal to the electronic control component 5, and the electronic control component 5 can transmit the electrical signal to an external control unit through the connector 9, and the external control unit can control the on-off adjustment of the electromagnetic valve 8, so as to achieve control of the pressure of the suspension system and the charging and discharging function of the air source to the air spring.

[0064] The above is only a preferred embodiment of the present application, and it should be noted that those skilled in the art can make several improvements and refinements without departing from the principles of the present application, and these improvements and refinements should also be considered within the scope of protection of the present application.

Claims

1. A valve cage device, characterized by, The device includes a valve block, a sensing element, and a cover plate. The valve block has a sensing channel and a mounting channel, which are connected. The sensing element is located in the mounting channel, and at least a portion of the cover plate is also located in the mounting channel. The cover plate and the valve block are fixedly connected or limit-connected, and the cover plate is used to press and fix the sensing element. The sensing element can collect signals in the sensing channel. Both the cover plate and the valve block are injection molded parts.

2. The valve cage apparatus of claim 1, wherein, The installation channel includes a first channel segment and a second channel segment. The first channel segment has a first peripheral wall and a first end wall, and the second channel segment has a second peripheral wall and a second end wall. The second channel segment is located on the side of the first channel segment facing the sensing channel. At least a portion of the cover plate is located within the first channel segment, and the cover plate and the first end wall abut against each other axially. At least a portion of the sensing element is located within the second channel segment. The sensing element has a first axial end face and a second axial end face disposed opposite to each other. The first axial end face abuts against the cover plate, and the second axial end face abuts against the second end wall.

3. The valve cage apparatus of claim 2, wherein, Along a direction away from the second end wall, a portion of the sensing element protrudes from the first end wall. The cover plate has a stepped portion, which has a stepped peripheral wall and a stepped end wall. The cover plate abuts against the first axial end face through the stepped end wall.

4. The valve cage apparatus of claim 2, wherein, The cover plate and the first peripheral wall portion are interference-fitted.

5. The valve cage assembly of claim 4, wherein, It also includes a shielding part and a filling part. The shielding part is connected to the cover plate and the valve block and is used to shield the joint between the cover plate and the first peripheral wall. The filling part can at least partially cover the cover plate and is connected to the valve block.

6. The valve cage apparatus of claim 3, wherein, The mounting channel further includes a third channel segment, which has a third peripheral wall portion and a third end wall portion, and the third channel segment is located on the side of the second channel segment facing the sensing channel; It also includes a sealing element located in the third channel section and axially pressed between the second axial end face and the third end wall.

7. Valve cassette device according to any of claims 1-6, characterized in that The valve block includes a peripheral plate portion and a base plate portion. The base plate portion is located at one axial end of the peripheral plate portion. The base plate portion includes a base plate body and a base plate protrusion. The base plate protrusion and the peripheral plate portion are both located on the same axial side of the base plate body. At least a portion of the mounting channel is formed on the base plate protrusion.

8. Valve cassette device according to any one of claims 1-6, characterized in that It also includes an electronic control component, which is installed on the valve block. The cover plate has a signal connection part inserted through it. The sensing element is equipped with a signal connection terminal. One end of the signal connection part is connected to the signal connection terminal, and the other end of the signal connection part is connected to the electronic control component.

9. The valve cage apparatus of claim 8, wherein, The cover plate includes a top cover portion, a cylindrical portion, and a protrusion portion. The cylindrical portion and the protrusion portion are located on opposite axial sides of the top cover portion, and the signal connection portion passes through the top cover portion and the protrusion portion.

10. The valve cage apparatus of any one of claims 1-6, wherein, It also includes a connector having a connection channel, the connector being mounted on the valve block, and the connection channel being connected to the sensing channel.

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