Gas detection mistake proofing device
By designing a gas detection and error prevention device containing fixed components and detection components, and using mechanism conversion to achieve leakage detection and gap control, the problem of inaccurate gap detection of rough or curved workpieces in the prior art is solved, and accurate gap control and error prevention detection of planes, curved surfaces and rough surfaces are achieved.
Patent Information
- Application Number
- CN202420736659.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-10
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-10
AI Technical Summary
In the prior art, gas inspection and error prevention detection methods cannot accurately detect the rough surface or the gap between the workpiece and the positioning reference surface.
By designing a gas detection and error prevention device, the device includes a fixing assembly and a detection assembly. The fixing assembly has a base, a first sliding cavity and a second sliding cavity, and the detection assembly includes a first sliding member and a second sliding member, and the leakage detection and gap control are achieved through mechanism conversion using the communication state of the recess, the gas detection interface and the exhaust port.
The device can be used for clearance control and accurate error-proof detection of planes, curved surfaces and rough surfaces, solving the problem of inaccurate detection in the prior art.
Smart Images
Figure CN222618133U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of component detection, and in particular to a gas detection error-proofing device. Background Art
[0002] During the processing of parts, it is necessary to ensure that the gap between the workpiece surface and the positioning reference surface of the fixture is controlled within a preset range to ensure the subsequent processing accuracy of the workpiece.
[0003] In the prior art, a gas detection hole connected to the reference surface is usually set on the fixture, and then the gas source is connected to the gas detection hole, and the gas source leakage is detected by a sensor. When the gap between the workpiece surface and the reference surface is within the preset range and is close to the fitting state, the gas leakage of the gas detection hole between the workpiece surface and the reference surface is small, which is the correct state. When there are debris between the workpiece surface and the reference surface and the gap exceeds the preset range, the gas leakage of the gas detection hole between the workpiece surface and the reference surface is large and exceeds the preset threshold, which is an error state. At this time, the sensor will send an alarm signal to the machine tool to stop the machine tool processing, thereby achieving error prevention.
[0004] When the workpiece surface is rough or curved, the gap between the workpiece surface and the reference surface varies greatly, and the leakage amounts at different positions are dispersed greatly. It is impossible to accurately identify the correct and incorrect states by directly detecting the leakage amount of the air inspection hole between the workpiece surface and the reference surface. Utility Model Content
[0005] The present application provides a pneumatic error detection and error prevention device to solve the technical problem that the pneumatic error detection and error prevention detection method in the prior art cannot accurately detect the gap between the rough surface or curved surface of the workpiece and the positioning reference surface.
[0006] The present application provides a gas detection error prevention device, comprising:
[0007] The fixing assembly includes a base, the base has a reference surface matching the surface to be detected; the base also has a first sliding cavity and a second sliding cavity inside, one end of the first sliding cavity is opened and arranged on the reference surface, and the other end of the first sliding cavity is connected to the second sliding cavity;
[0008] The detection assembly includes a first sliding member and a second sliding member, the first sliding member is slidably disposed in the first sliding cavity, the second sliding member is slidably disposed in the second sliding cavity, the second sliding member has a pushing portion, one end of the first sliding member has a contact surface for abutting against a surface to be detected, and the other end of the first sliding member abuts against the pushing portion;
[0009] The second sliding member is provided with a recessed portion, and along the sliding direction of the recessed portion, the base is provided with a gas detection interface and an exhaust port which are communicated with the second sliding cavity.
[0010] Optionally, in the sliding direction of the recessed portion, the distance between the gas detection interface and the exhaust port is smaller than the size of the recessed portion.
[0011] Optionally, the pushing portion and the recessed portion are staggered in the circumferential direction of the second sliding member.
[0012] Optionally, the pushing portion and the recessed portion are respectively arranged on both sides of the axial direction of the second sliding member, and part of the pushing portion and the recessed portion are staggered in the axial direction of the second sliding member.
[0013] Optionally, the reference surface is a plane or a curved surface.
[0014] Optionally, the axial direction of the first sliding cavity is perpendicular to the axial direction of the second sliding cavity;
[0015] The pushing portion has a pushing inclined surface, and the pushing inclined surface is arranged at an angle with the axis of the second sliding member.
[0016] Optionally, a sealing member is also sleeved on the second sliding member, and the sealing member abuts between the base and the second sliding member.
[0017] Optionally, the detection component further includes a driving member connected to one end of the second sliding member.
[0018] Optionally, the gas detection error prevention device further includes a sensor, and the sensor is connected to the gas detection interface.
[0019] Optionally, the fixing assembly further includes a limiting member disposed on the base.
[0020] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:
[0021] The gas detection and error prevention device provided in the embodiment of the present application does not directly detect gas leakage in the gas path between the surface to be detected and the reference surface, but realizes leakage detection and gap control through mechanism conversion by the connectivity state of the recessed portion, the gas detection interface and the exhaust port. This detection form is not limited by the roughness and shape of the surface to be detected, and can be applied to gap control and accurate error prevention detection of flat surfaces, curved surfaces and rough surfaces. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0023] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.
[0024] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.
[0025] Figure 1 A schematic diagram of the structure of the gas detection error prevention device provided in an embodiment of the present application;
[0026] Figure 2 A cross-sectional view of a gas detection error prevention device provided in an embodiment of the present application;
[0027] Figure 3 A schematic diagram of the structure of the base provided in the embodiment of the present application;
[0028] Figure 4 A partial cross-sectional view of a base provided in an embodiment of the present application;
[0029] Figure 5 A schematic diagram of the structure of the second sliding member provided in the embodiment of the present application Figure 1 ;
[0030] Figure 6 A schematic diagram of the structure of the second sliding member provided in the embodiment of the present application Figure 2 ;
[0031] Figure 7 A front view of a second sliding member provided in an embodiment of the present application;
[0032] Figure 8 The embodiment of the present application provides Figure 7 Sectional view of AA in the middle;
[0033] Fig. 9 The detection state of the gas detection error prevention device provided in the embodiment of the present application Figure 1 ;
[0034] Fig.10 The detection state of the gas detection error prevention device provided in the embodiment of the present application Figure 2 ;
[0035] Fig.11 A front view of a first sliding member provided in an embodiment of the present application;
[0036] Fig.12 A top view of a first sliding member provided in an embodiment of the present application.
[0037] Description of reference numerals:
[0038] 1. Fixed assembly; 11. Base; 111. Reference surface; 112. First sliding cavity; 113. Second sliding cavity; 114. Gas detection interface; 115. Exhaust port; 116. Sealing member; 117. Basic block; 118. Fixed block; 12. First stopper; 13. Second stopper;
[0039] 2. Detection component; 21. First sliding member; 211. Contact surface; 212. Matching surface; 22. Second sliding member; 221. Pushing portion; 222. Recessed portion; 223. Connecting portion; 23. Driving member.
[0040] 3. Workpiece; 31. Surface to be tested;
[0041] 4. Debris. DETAILED DESCRIPTION
[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.
[0043] The disclosure below provides many different embodiments or examples to realize the different structures of the present application. In order to simplify the disclosure of the present application, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.
[0044] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.
[0045] In order to solve the technical problem that the pneumatic error-proofing detection method cannot accurately detect the gap between the rough surface or curved surface of the workpiece and the positioning reference surface, the present application provides a pneumatic error-proofing device that can perform accurate gap detection through a detection component 2 movably arranged on a base 11, thereby achieving accurate error-proofing detection through pneumatic detection.
[0046] See also Figures 1 to 12 The embodiment of the present application provides a gas detection error prevention device, comprising a fixing component 1 and a detection component 2. The fixing component 1 is used to realize the clamping and positioning of the workpiece 3, and the detection component 2 is used to detect the positioning accuracy of the workpiece 3 in the fixing component 1.
[0047] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 The fixing assembly 1 includes a base 11, and the base 11 has a reference surface 111 that matches the surface 31 to be detected on the workpiece 3. After the workpiece 3 is clamped, it is necessary to check whether the gap between the surface 31 to be detected and the reference surface 111 is within a preset range, or to confirm whether there are debris 4 between the surface 31 to be detected and the reference surface 111, so as to confirm the accuracy of the clamping and positioning of the workpiece 3. The base 11 also has a first slide cavity 112 and a second slide cavity 113. One end of the first slide cavity 112 is opened on the reference surface 111. Figure 3 As shown, the other end of the first sliding cavity 112 is connected to the second sliding cavity 113. Figure 4 shown.
[0048] See also Figure 1 , Figure 2 , Fig. 9and Fig.10 The detection assembly 2 includes a first sliding member 21 and a second sliding member 22. The first sliding member 21 is slidably disposed in the first sliding cavity 112, and the second sliding member 22 is slidably disposed in the second sliding cavity 113. The second sliding member 22 has a push portion 221. One end of the first sliding member 21 has a contact surface 211 for abutting against the surface to be detected 31, and can extend out of the reference surface 111 to contact the surface to be detected 31 on the workpiece 3. The other end of the first sliding member 21 abuts against the push portion 221. When the second sliding member 22 slides inside the second sliding cavity 113, the push portion 221 pushes the first sliding member 21 to slide in the first sliding cavity 112, thereby realizing the linkage between the second sliding member 22 and the first sliding member 21.
[0049] See also Figure 7 , Fig. 9 and Fig.10 The second sliding member 22 has a recessed portion 222 , and along the sliding direction of the recessed portion 222 , the base 11 has a gas detection interface 114 and an exhaust port 115 that are connected to the second sliding cavity 113 .
[0050] The first sliding member 21 and the second sliding member 22 are both columnar structures. The second sliding member 22 has a correct state position and an incorrect state position in the sliding stroke. The gas enters from the gas detection interface 114. When the gap between the surface to be detected 31 and the reference surface 111 is within a preset range, the second sliding member 22 slides to the recessed portion 222 and is only arranged opposite to and connected with one of the gas detection interface 114 and the exhaust port 115. The contact surface 211 of the first sliding member 21 abuts against the surface to be detected 31, so that the second sliding member 22 cannot slide further. At this time, the gas detection interface 114, the exhaust port 115 and the recessed portion 222 are not connected. Fig. 9 As shown in FIG. 1 , this is the correct state position. At this time, the leakage of the exhaust port 115 is small and will not trigger an alarm. When debris 4 exists between the surface to be detected 31 and the reference surface 111, the sliding of the first sliding member 21 is restricted, thereby restricting the sliding of the second sliding member 22, so that the recessed portion 222 of the second sliding member 22 is in a state of being connected to the gas detection interface 114 and the exhaust port 115 at the same time, as shown in FIG. Fig.10 As shown, the leakage is large at this time, which is the wrong position state position, and will trigger an alarm, which can achieve accurate error prevention.
[0051] It should be noted that the gas detection and error prevention device of the present application does not directly detect gas leakage in the gas path between the surface to be detected 31 and the reference surface 111, but realizes leakage detection and gap control through the mechanism conversion (i.e., the linkage between the first sliding member 21 and the second sliding member 22) by the connection state of the recessed portion 222, the gas detection interface 114 and the exhaust port 115. This detection form is not limited by the roughness and shape of the surface to be detected 31, and can be applied to gap control and error prevention detection of flat surfaces, curved surfaces and rough surfaces. In the following embodiments of the present application, the surface to be detected 31 is a curved surface, and the reference surface 111 is a curved surface matching the surface to be detected 31, such as Figure 1 and Figure 2 shown.
[0052] It should be noted that the base 11 can be an integral block structure or can be formed by fixedly connecting multiple components. In the present application, the base 11 includes a fixedly connected basic block 117 and a fixed block 118, a reference surface 111 and a portion of the first slide cavity 112 are provided on the basic block 117, and a gas detection interface 114, an exhaust port 115, a second slide cavity 113 and a portion of the first slide cavity 112 are provided on the fixed block 118.
[0053] In some embodiments of this application, please refer to Fig.10 In the sliding direction of the recessed portion 222 , the distance between the gas detection interface 114 and the exhaust port 115 is smaller than the size of the recessed portion 222 , so that the gas detection interface 114 and the exhaust port 115 can be connected through the recessed portion 222 .
[0054] In the above embodiment, the push portion 221 is arranged toward the position where the workpiece 3 is located. In order to avoid interference with the workpiece 3 when the air pipe is connected to the air detection interface 114, the air detection interface 114 and the exhaust port 115 should be arranged away from the workpiece 3. In some embodiments of the present application, please refer to Figures 5 to 8 The pushing portion 221 and the recessed portion 222 are staggered in the circumferential direction of the second sliding member 22, so that the recessed portion 222 is away from the pushing portion 221, so that when the air inspection interface 114 and the exhaust port 115 are set corresponding to the sliding area of the recessed portion 222, the workpiece 3 can be avoided.
[0055] In some embodiments of the present application, the pushing portion 221 and the recessed portion 222 are respectively arranged on both sides of the axial direction of the second sliding member 22. At this time, the gas detection interface 114 and the exhaust port 115 are arranged opposite to the recessed portion 222, so that the gas detection interface 114 and the exhaust port 115 can be arranged on the side of the base 11 facing away from the workpiece 3.
[0056] Part of the pushing portion 221 and the recessed portion 222 are staggered in the axial direction of the second sliding member 22. When the pushing portion 221 and the recessed portion 222 move along the axial direction of the second sliding member 22, the first sliding member 21 always abuts against the pushing portion 221. When the first sliding member 21 abuts against different areas of the pushing portion 221, the recessed portion 222 can achieve different communication states with the gas detection interface 114 and the exhaust port 115.
[0057] It should be noted that, along the axial direction of the second sliding member 22, the number of recessed portions 222 can be set to be multiple, and the multiple recessed portions 222 overlap with the push portion 221 in the axial direction, which can be used to implement air detection error prevention detection of situations such as too small a gap, the presence of debris 4, or too large a gap. Figure 2 For example, if two recessed parts 222 are arranged in sequence along the left and right directions, when the left recessed part 222 is connected to the gas detection interface 114 and the exhaust port 115, it means that the gap between the surface to be detected 31 and the reference surface 111 is too small or there are debris 4; when the right recessed part 222 is connected to the gas detection interface 114 and the exhaust port 115, it means that the gap between the surface to be detected 31 and the reference surface 111 is too large. Since the gap is too large, it can usually be identified by the naked eye. In order to simplify the structure of the second sliding member 22, only one recessed part 222 is provided on the second sliding member 22 of the present application. Fig. 9 and Fig.10 shown.
[0058] In some embodiments of this application, please refer to Figure 3 The reference surface 111 is a plane or a curved surface, and the reference surface 111 is matched with the surface to be detected 31 to facilitate the gap control between the reference surface 111 and the surface to be detected 31.
[0059] In the above embodiment, the axial direction of the first sliding cavity 112 is related to the gap thickness direction of the gap to be detected, that is, the axial direction of the first sliding cavity 112 is parallel to the gap thickness direction of the gap to be detected, and the axial direction of the second sliding cavity 113 is set at an angle to the axial direction of the first sliding cavity 112. The shape of the pushing portion 221 is set according to the angle between the first sliding cavity 112 and the second sliding cavity 113, so that when the second sliding member 22 slides along the second sliding cavity 113, one end of the first sliding member 21 can be extended from the reference surface 111 by the pushing portion 221, thereby achieving abutment with the surface 31 to be detected.
[0060] In some embodiments of this application, please refer to Figure 4 , the axial direction of the first sliding cavity 112 is perpendicular to the axial direction of the second sliding cavity 113; specifically, the axial direction of the first sliding cavity 112 is a vertical direction, and the axial direction of the second sliding cavity 113 is a horizontal direction.
[0061] The pushing portion 221 has a pushing inclined surface, which is set at an angle with the axis of the second sliding member 22. When the second sliding member 22 slides in the horizontal direction, the first sliding member 21 can be pushed upward by the pushing inclined surface, so that the contact surface 211 of the first sliding member 21 contacts the surface to be detected 31 on the workpiece 3. The angle between the pushing inclined surface and the axis of the second sliding member 22 is determined by geometric calculation based on the extension length of the first sliding member 21 (that is, the clearance range to be ensured).
[0062] In the above embodiment, in order to avoid affecting the gas leakage detection, it should be ensured that the gas leakage between the components is as small as possible when the gas detection error prevention device is in the correct position. Therefore, the distance L1 between the first sliding member 21 and the side wall of the first sliding cavity 112, and the distance L2 between the second sliding member 22 and the side wall of the second sliding cavity 113 should be set as small as possible, and L2 is smaller than L1, so that when the second sliding member 22 slides in the second sliding cavity 113, the outer peripheral surface other than the push portion 221 and the recessed portion 222 fits with the inner wall of the second cavity, so as to reduce the gas leakage.
[0063] In some embodiments of the present application, a seal 116 is further provided on the second sliding member 22, and the seal 116 abuts between the base 11 and the second sliding member 22 to prevent gas from leaking from the gap between the outer walls of the base 11 and the second sliding member 22 and affecting the detection results.
[0064] As a specific embodiment of the present application, the second sliding member 22 is disposed through the fixed block 118 of the base 11, and the fixed block 118 is provided with sealing members 116 at both ends of the second sliding cavity 113, which are used to seal the ends of the second sliding cavity 113. Figure 2 and Figure 4 This can prevent a large amount of gas from leaking from both ends of the second sliding cavity 113 when the second sliding member 22 slides inside the second sliding cavity 113, thereby affecting the detection result.
[0065] In some embodiments of this application, please refer to Figure 1 and Figure 2 The detection assembly 2 also includes a driving member 23, which is connected to one end of the second sliding member 22 and is used to drive the second sliding member 22 to reciprocate along the axial direction of the second sliding cavity 113, thereby realizing the gap detection between the workpiece 3 and the reference surface 111.
[0066] It should be noted that the driving member 23 can be any linear actuator that can make the second sliding member 22 move along the Figure 2 Specifically, the driving member 23 can be a cylinder, a hydraulic cylinder or other components.
[0067] In the above embodiment, the cross-section of the first slide cavity 112 and the second slide cavity 113 can be circular, rectangular or polygonal, and the cross-sections of the first sliding member 21 and the second sliding member 22 are matched with the cross-sections of the first slide cavity 112 and the second slide cavity 113 respectively, so as to reduce the distance between the outer wall of the sliding member and the inner wall of the slide cavity and reduce the gas leakage. In order to avoid relative rotation between the mating surface 212 of the first sliding member 21 and the push inclined surface of the second sliding member 22, which affects the accuracy of the measurement, it is necessary to avoid the first sliding member 21 from rotating inside the first slide cavity 112 and the second sliding member 22 from rotating inside the second slide cavity 113. Since the connecting portion 223 of the second sliding member 22 is connected to the driving member 23, the second sliding member 22 can be rotationally limited by the driving member 23; the cross-sections of the first slide cavity 112 and the first sliding member 21 are both non-circular, such as Figure 4 and Fig.12 As shown, it is possible to prevent the first sliding member 21 from rotating inside the first sliding cavity 112 around the axial direction of the first sliding cavity 112 while sliding in the vertical direction.
[0068] In some embodiments of the present application, the gas detection error prevention device further includes a sensor, which is connected to the gas detection interface 114 and is used to detect the gas leakage in the gas circuit. It should be noted that the sensor may include a digital position sensor or a pressure sensor.
[0069] In the above embodiment, during the detection process, it is necessary to ensure that the position of the workpiece 3 on the base 11 does not change, so as to avoid changes in the gap between the surface to be detected 31 and the reference surface 111, thereby affecting the detection result and the positioning accuracy of the workpiece 3.
[0070] In order to solve the above problems, in some embodiments of the present application, the fixing assembly 1 further includes a stopper disposed on the base 11. It should be noted that the stopper includes a stopper block for accurately matching the workpiece 3 and the base 11, such as Figure 1 and Figure 2 The first stopper 12 and the second stopper 13 are respectively used to limit the bottom and one end of the workpiece 3. The stopper also includes a connecting member or a clamping member (not shown in the figure) for fixing the workpiece 3 on the base 11 to avoid relative movement between the workpiece 3 and the base 11, so as to facilitate gas detection and error prevention and subsequent processing.
[0071] See also Figures 1 to 12 In some embodiments of the present application, the method of using the above-mentioned gas detection error prevention device is as follows:
[0072] Step 1: The driving member 23 drives the second sliding member 22 to Figure 2Slide the first sliding member 21 to the right side of the workpiece 3 so that the top end of the first sliding member 21 is sunken into the reference surface 111, so as to avoid the first sliding member 21 interfering with the workpiece 3 when the workpiece 3 is set on the base 11;
[0073] Step 2: placing the workpiece 3 on the base 11 and fixing the workpiece 3 by means of a stopper;
[0074] Step 3: The driving member 23 drives the second sliding member 22 to Figure 2 Slide to the left side of the second sliding member 22 until the second sliding member 22 encounters resistance and cannot slide further; deliver gas to the gas detection interface 114 through the air pipe, connect the gas detection interface 114 through the sensor, and detect the leakage in the gas path;
[0075] Step 4: If there is no debris 4 between the surface to be detected 31 and the reference surface 111, and the gap between the surface to be detected 31 and the reference surface 111 is within the preset range, the first sliding member 21 and the second sliding member 22 can slide smoothly. When the first sliding member 21 abuts against the surface to be detected 31 of the workpiece 3, the two stop sliding. At this time, the positions of the first sliding member 21 and the second sliding member 22 in the detection assembly 2 in the base 11 are as shown in FIG. Fig. 9 At this time, the recessed portion 222, the exhaust port 115 and the gas detection interface 114 are not connected to each other, and the gas leakage in the gas path is small. This is the correct position state;
[0076] If there is debris 4 between the surface to be detected 31 and the reference surface 111, or the surface to be detected 31 is deformed so that the gap between the surface to be detected 31 and the reference surface 111 is too small, the debris 4 or the surface to be detected 31 will restrict the first sliding member 21 from moving upward, thereby restricting the second sliding member 22 from moving toward Figure 2 The sensor moves to the left side in the process. At this time, the recessed portion 222, the exhaust port 115 and the gas detection interface 114 are connected to each other, and the gas leakage in the gas circuit is large. This is an incorrect position state. The sensor will send an alarm signal to the machine tool to facilitate the operator to adjust the workpiece 3 and / or the base 11 in time, thereby preventing errors.
[0077] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.
[0078] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.
[0079] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.
Claims
1. A gas detection error proofing device, characterized in that: include: A fixing assembly (1), the fixing assembly (1) comprising a base (11), the base (11) having a reference surface (111) matching a surface to be detected (31); the base (11) further comprises a first sliding cavity (112) and a second sliding cavity (113) inside, one end of the first sliding cavity (112) opening being arranged on the reference surface (111), and the other end of the first sliding cavity (112) being connected to the second sliding cavity (113); A detection component (2), the detection component (2) comprising a first sliding member (21) and a second sliding member (22), the first sliding member (21) being slidably disposed in the first sliding cavity (112), the second sliding member (22) being slidably disposed in the second sliding cavity (113), the second sliding member (22) having a pushing portion (221), one end of the first sliding member (21) having a contact surface (211) for abutting against the surface to be detected (31), the other end of the first sliding member (21) abutting against the pushing portion (221); The second sliding member (22) has a recessed portion (222), and along the sliding direction of the recessed portion (222), the base (11) has a gas detection interface (114) and an exhaust port (115) that are connected to the second sliding cavity (113).
2. The gas detection error proofing device according to claim 1, characterized in that: In the sliding direction of the recessed portion (222), the distance between the gas detection interface (114) and the exhaust port (115) is smaller than the size of the recessed portion (222).
3. The gas detection error proofing device according to claim 1, characterized in that: The pushing portion (221) and the recessed portion (222) are arranged in a staggered manner in the circumferential direction of the second sliding member (22).
4. The gas detection error prevention device according to any one of claims 1 to 3, characterized in that: The pushing portion (221) and the recessed portion (222) are respectively arranged on both sides of the axial direction of the second sliding member (22), and part of the pushing portion (221) and the recessed portion (222) are arranged in an axially offset manner of the second sliding member (22).
5. The gas detection error proofing device according to any one of claims 1 to 3, characterized in that: The reference surface (111) is a plane or a curved surface.
6. The gas detection error prevention device according to any one of claims 1 to 3, characterized in that: The axial direction of the first sliding cavity (112) is perpendicular to the axial direction of the second sliding cavity (113); The pushing portion (221) has a pushing inclined surface, and the pushing inclined surface is arranged at an angle with the axis of the second sliding member (22).
7. The gas detection error proofing device according to any one of claims 1 to 3, characterized in that: The second sliding member (22) is also sleeved with a sealing member (116), and the sealing member (116) is abutted between the base (11) and the second sliding member (22).
8. The gas detection error proofing device according to any one of claims 1 to 3, characterized in that: The detection component (2) further comprises a driving member (23), wherein the driving member (23) is connected to one end of the second sliding member (22).
9. The gas detection error proofing device according to any one of claims 1 to 3, characterized in that: It also includes a sensor, which is in communication with the gas detection interface (114).
10. The gas detection error proofing device according to any one of claims 1 to 3, characterized in that: The fixing assembly (1) further comprises a limiting member arranged on the base (11).