Rapid remodeling detection tool for small oxygen sensor

Abstract

The utility model relates to a quick remodeling detection tool for a small-sized oxygen sensor. The quick remodeling detection tool comprises a wiring harness joint positioning plate, a test probe mounting plate and a tool fixing plate, and the wire harness joint positioning plate and the test probe mounting plate are fixedly connected with each other through a bolt structure. And the bottoms of the wire harness joint positioning plate and the test probe mounting plate are detachably fixed on the tool fixing plate. A cross-shaped slot matched with the shell of the oxygen sensor in shape is formed in the wire harness joint positioning plate, a baffle plate for preventing the oxygen sensor from sliding out is arranged on the inner side of the cross-shaped slot, and a probe through hole for connecting a test probe is formed in the baffle plate. The utility model aims to provide the small-sized oxygen sensor rapid remodeling detection tool, by improving the layout of the detection probe and the positioning structure of the wiring harness joint, the wiring harness joints of eight small-sized oxygen sensors can be compatible by only one detection tool, so that the tool cost is reduced, remodeling can be realized without shutdown, and the production efficiency is improved. And the working hours of production and remodeling are greatly saved, so that the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts production and manufacturing, in particular to small oxygen sensor detection. Background Art

[0002] Small oxygen sensors are essential automotive parts in the vehicle manufacturing industry. Oxygen sensors need to be tested before they can be put into use. The pins in the wiring harness connector of the oxygen sensor need to be connected to the corresponding test probes to achieve small oxygen sensor testing.

[0003] There are 8 types of existing wiring harness connectors for small oxygen sensors. The detection device needs to design tooling according to the pin position in the wiring harness connector and the structure of the connector. In this way, 8 types of tooling need to be designed for 8 types of connectors. Not only is the tooling production cost high, but it is also very inconvenient to change the tooling during the production process. It requires downtime for disassembly and assembly, which wastes work time and is extremely unfavorable for product production and market promotion.

[0004] Therefore, there is an urgent need for a product to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a small oxygen sensor quick change detection tooling to reduce tooling costs, simplify detection operations, and achieve changeover without stopping the machine, thereby greatly saving the work time for production changeover and improving production efficiency.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a small oxygen sensor quick-change detection tooling, including a wiring harness connector positioning plate, a test probe mounting plate and a tooling fixing plate. The wiring harness connector positioning plate and the test probe mounting plate are fixedly connected to each other by a bolt structure. The bottoms of the wiring harness connector positioning plate and the test probe mounting plate are detachably fixed on the tooling fixing plate. A cross-shaped slot that matches the shape of the outer shell of the oxygen sensor is provided on the wiring harness connector positioning plate, and a baffle is provided on the inner side of the cross-shaped slot to prevent the oxygen sensor from sliding out, and a probe through hole for connecting the test probe is provided on the baffle. There is a connector clamping block under the slot body of the cross-shaped slot, and the connector clamping block is a protruding upward curved hook-shaped lifting surface, which can support and fix the front end part of the oxygen sensor embedded in the cross-shaped slot so that it is tightly fixed in the cross-shaped slot.

[0007] As a preferred embodiment, two pairs of screw holes are provided at corresponding positions of the wiring harness connector positioning plate and the test probe mounting plate, and the wiring harness connector positioning plate and the test probe mounting plate are detachably fixedly connected together by tightening nuts.

[0008] As a preferred embodiment, the cross-shaped slots are interconnected vertical slots and horizontal slots, wherein the vertical slots are rectangular slots, the horizontal slots are flat cylindrical slots, and the horizontal slots and vertical slots are respectively consistent with the flat round shape of the main shell of the oxygen sensor and the convex structures above and below the main shell.

[0009] As a preferred embodiment, the connector clamping block is an elastic telescopic structure or a bolt positioning structure, and the connector clamping block is arranged in a telescopic slot below a corresponding cross-shaped slot of the wiring harness connector positioning plate.

[0010] As a preferred method, if the connector clamping block is an elastic telescopic structure, a spring is fixed on the inner side of the upper curved hook-shaped lifting surface of the connector clamping block, and the other end of the spring is fixed in the telescopic groove below the corresponding cross-shaped groove of the wiring harness connector positioning plate, so that the upper curved hook-shaped lifting surface applies a force to the front end of the oxygen sensor in the direction of the groove body of the wiring harness connector positioning plate, thereby tightly fixing the front end part of the oxygen sensor in the cross-shaped groove.

[0011] As a preferred embodiment, if the connector clamping block is a bolt positioning structure, a bolt positioning support platform fixed to the wiring harness connector positioning plate is provided below the connector clamping block. The bolt positioning support platform and the connector clamping block have one or more bolt holes at corresponding positions, which can accurately position the height and / or telescopic state of the connector clamping block, so that the upward curved hook-shaped support surface applies a force in the direction of the groove body of the wiring harness connector positioning plate to the front end of the oxygen sensor, so that the front end of the oxygen sensor is tightly fixed in the cross-shaped slot.

[0012] As a preferred mode, one or more test probes are arranged on the test probe mounting plate according to the position of the probe through hole of the wiring harness connector positioning plate for connecting the test probe. And the probe is fixed on the protruding cylindrical boss of the connecting surface of the test probe mounting plate. The cylindrical boss matches the cylindrical groove on the back of the baffle of the cross-shaped slot of the wiring harness connector positioning plate, so as to locate the position of the test probe mounting plate relative to the wiring harness connector positioning plate, thereby locating the position of the test probe relative to the oxygen sensor.

[0013] As a preferred embodiment, a bolt hole for fixing the wiring harness connector positioning plate and the test probe mounting plate is provided on the top surface of the middle portion of the fixing portion.

[0014] As a preferred embodiment, the tooling fixing plate is provided with a first sliding portion, a fixed portion, and a second sliding portion in sequence from left to right. Among them, the fixed portion is located between the first sliding portion and the second sliding portion. The first sliding portion is located on the fixed side of the harness connector positioning plate, and the second sliding portion is located on the fixed side of the test probe mounting plate. The first connecting guide rail and the second connecting guide rail perpendicular to the harness connector positioning plate are respectively provided below the first sliding portion and the second sliding portion, so that the tooling fixing plate can slide forward along the guide rail in a direction perpendicular to the harness connector positioning plate. In addition, the second sliding portion is tilted upward, so that the height of the second connecting guide rail is higher than the height of the fixed portion.

[0015] As a preferred embodiment, a hook clip for fixing a tool or equipment is also provided on the top surface of the first sliding part, and a blocking piece is provided on the front side and right side of the hook clip.

[0016] There are 8 types of existing wiring harness connectors for small oxygen sensors. The detection device needs to design tooling according to the structure of the oxygen sensor wiring harness connector and the position of the pin. In this way, 8 types of connectors require the design of 8 types of tooling. Not only is the tooling production cost high, but the tooling changeover during the production process is also extremely inconvenient, requiring shutdown for disassembly and assembly, which wastes work time and is extremely unfavorable for product production and market promotion.

[0017] The purpose of the utility model is to provide a small oxygen sensor quick-change detection tooling, through the improvement of the layout of the detection probe and the wiring harness connector positioning structure, to achieve only one detection tooling can be compatible with 8 kinds of small oxygen sensor wiring harness connectors, not only reduces the tooling cost, but also can achieve the changeover without stopping the machine, greatly saves the man-hours of production changeover, and thus improves production efficiency.

[0018] The utility model has the following advantages over the prior art:

[0019] 1. According to the structures and pin positions of 8 oxygen sensor harness connectors, the position of the test probe on the test probe mounting plate is optimized and the contact area of ​​the pin part of the test probe that can contact the oxygen sensor harness connector is maximized, thereby achieving a set of probes that can be reliably electrically connected to 8 different oxygen sensor harness connectors.

[0020] 2. The detection tooling of the utility model consists of two modules: a test probe mounting plate and a harness connector positioning plate. The costly and complex electrical connection circuits are all arranged on the probe mounting plate, and the cost-effective and simple-structured harness connector positioning plate is the electrical connection interface of 8 types of oxygen sensors. In this way, plugging and unplugging will not affect the life of the electrical connection circuit, so that the detection tooling not only supports the detection of multiple types of oxygen sensors but also has a long service life, thereby greatly reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the overall assembly structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the front three-dimensional structure of the wiring harness connector positioning plate of the utility model.

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the back side of the wiring harness connector positioning plate of the utility model.

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of the test probe mounting plate of the utility model.

[0025] Figure 5 The utility model is a three-dimensional structural schematic diagram of the oxygen sensor installed on the wiring harness connector positioning plate. DETAILED DESCRIPTION

[0026] Hereinafter, an implementation of the small oxygen sensor quick-change detection tooling of the present invention will be described with reference to the accompanying drawings.

[0027] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are explanatory and exemplary, and should not be interpreted as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the contents disclosed in the claims and the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0028] The drawings in this specification are schematic diagrams, which assist in explaining the concept of the present utility model and schematically show the shapes of various parts and their mutual relationships.

[0029] Figure 1 The overall assembly structure of the utility model is shown. Figure 1 As shown, a small oxygen sensor quick-change detection tool of the utility model comprises a wiring harness connector positioning plate 6, a test probe mounting plate 5 and a tool fixing plate 1.

[0030] The wiring harness connector positioning plate 6 and the test probe mounting plate 5 are fixedly connected to each other by a bolt structure. The bottoms of the wiring harness connector positioning plate 6 and the test probe mounting plate 5 are detachably fixed on the tool fixing plate 1.

[0031] The harness connector positioning plate 6 is provided with a cross-shaped slot that matches the shape of the shell of the oxygen sensor 3 , and the inner side of the cross-shaped slot is provided with a baffle to prevent the oxygen sensor 3 from sliding out, and the baffle is provided with a probe through hole for connecting the test probe 7 .

[0032] There is a joint clamping block 2 below the groove body of the cross-shaped slot. The joint clamping block 2 is a protruding upward hook-shaped lifting surface, which can support and fix the front end part of the oxygen sensor 3 embedded in the cross-shaped slot so that it is tightly fixed in the cross-shaped slot.

[0033] In this embodiment, two pairs of screw holes are further preferably provided at corresponding positions of the wiring harness connector positioning plate 6 and the test probe mounting plate 5 , and the wiring harness connector positioning plate 6 and the test probe mounting plate 5 are detachably fixedly connected together by tightening nuts 4 .

[0034] In this embodiment, the cross-shaped slots are further preferably connected to each other, wherein the vertical slots are rectangular slots, the horizontal slots are flat cylindrical slots, and the horizontal slots and the vertical slots are respectively consistent with the flat round shape of the main shell of the oxygen sensor 3 and the convex structures above and below the main shell.

[0035] In the present embodiment, the connector clamping block 2 is further preferably an elastic telescopic structure or a bolt positioning structure 9 , and the connector clamping block 2 is arranged in a telescopic slot below a corresponding cross-shaped slot of the wiring harness connector positioning plate 6 .

[0036] The present embodiment is further preferred that if the connector clamping block 2 is an elastic telescopic structure, a spring is fixed on the inner side of the upper curved hook-shaped lifting surface of the connector clamping block 2, and the other end of the spring is fixed in the telescopic groove below the corresponding cross-shaped groove of the wiring harness connector positioning plate 6, so that the upper curved hook-shaped lifting surface applies a force to the front end of the oxygen sensor 3 in the direction of the groove body of the wiring harness connector positioning plate 6, thereby tightly fixing the front end part of the oxygen sensor 3 in the cross-shaped groove.

[0037] In this embodiment, if the connector clamping block 2 is a bolt positioning structure 9, a bolt positioning lifting platform fixed to the wiring harness connector positioning plate 6 is provided below the connector clamping block 2. The bolt positioning lifting platform and the corresponding positions of the connector clamping block 2 have one or more bolt holes, which can accurately position the height and / or telescopic state of the connector clamping block 2, so that the upper curved hook-shaped lifting surface applies a force in the direction of the groove body of the wiring harness connector positioning plate 6 to the front end of the oxygen sensor 3, so that the front end of the oxygen sensor 3 is tightly fixed in the cross-shaped slot.

[0038] In this embodiment, one or more test probes 7 are arranged on the test probe mounting plate 5 according to the position of the probe through hole of the wiring harness connector positioning plate 6 for connecting the test probe 7. In addition, the probe is fixed on the protruding cylindrical boss of the connecting surface of the test probe mounting plate 5. The cylindrical boss matches the cylindrical groove on the back of the baffle of the cross-shaped slot of the wiring harness connector positioning plate 6, so as to locate the position of the test probe mounting plate 5 relative to the wiring harness connector positioning plate 6, thereby locating the position of the test probe 7 relative to the oxygen sensor 3.

[0039] In this embodiment, further preferably, a bolt hole for fixing the wiring harness connector positioning plate 6 and the test probe mounting plate 5 is provided on the top surface of the middle portion of the fixing portion 12 .

[0040] More specifically, if Figure 3-4 As shown, the first fastener and the second fastener fixed at the left and right sides of the test probe mounting plate 5 pass through the bolt holes on the left and right sides of the wiring harness connector positioning plate 6 respectively, and the first fastener and the second fastener are respectively fixed with fastening nuts (41, 42). The fastening nuts (41, 42) are used to fasten the wiring harness connector positioning plate 6 and the test probe mounting plate 5 so that they are only fitted together without shaking.

[0041] In this embodiment, preferably, Figure 4 The three-dimensional structure of the test probe mounting plate 5 of the present invention is shown in FIG. Figure 4 As shown, the tooling fixing plate 1 is provided with a first sliding portion 11, a fixed portion 12 and a second sliding portion 13 from left to right. Among them, the fixed portion 12 is located between the first sliding portion 11 and the second sliding portion 13. The first sliding portion 11 is located on the fixed side of the harness connector positioning plate 6, and the second sliding portion 13 is located on the fixed side of the test probe mounting plate 5. The first connecting guide rail and the second connecting guide rail perpendicular to the harness connector positioning plate 6 are respectively provided below the first sliding portion 11 and the second sliding portion 13, so that the tooling fixing plate 1 can slide forward along the guide rail in a direction perpendicular to the harness connector positioning plate 6. In addition, the second sliding portion 13 is tilted upward, so that the height of the second connecting guide rail is higher than the height of the fixed portion 12.

[0042] In this embodiment, preferably, a hook clip for fixing a tool or device is also provided on the top surface of the first sliding portion 11. In addition, a blocking piece is provided on the front side and the right side of the hook clip.

[0043] Figure 2 The front three-dimensional structure of the wiring harness connector positioning plate 6 of the present invention is shown. Figure 3 The three-dimensional structure of the back side of the wiring harness connector positioning plate 6 of the present invention is shown in FIG. Figure 2-3 As shown, in this embodiment, it is further preferred that five cross-shaped slots (81, 82, 83, 84, 85) are provided on the wiring harness connector positioning plate 6, including two cross-shaped slots (81, 82) in the upper row and three cross-shaped slots (83, 84, 85) in the lower row. And the heights of the cross-shaped slots in the same row are the same, and they are arranged at equal distances in the horizontal direction. Each row of cross-shaped slots is arranged in the same cylindrical groove, and the cylindrical groove 51 of the first row is arranged side by side with the cylindrical groove 52 of the second row. Each connector clamping block (21, 22, 23, 24, 25) is respectively arranged in the corresponding telescopic groove (21', 22', 23', 24', 25') on the wiring harness connector positioning plate 6.

[0044] Figure 4 The three-dimensional structure of the test probe mounting plate 5 of the present invention is shown in FIG. Figure 4 As shown, in this embodiment, five test probes (71, 72, 73, 74, 75) are arranged on the test probe mounting plate 5, including two test probes (71, 72) in the upper row and three test probes (73, 74, 75) in the lower row. And the test probes in the same row have the same height and are arranged equidistantly in the horizontal direction. Each row of test probes is arranged in the same cylindrical boss, and the cylindrical boss 61 of the first row is arranged side by side with the cylindrical boss 62 of the second row. The position of each test probe (71, 72, 73, 74, 75) corresponds to the position of the corresponding probe through hole (71', 72', 73', 74', 75') on the wiring harness connector positioning plate 5.

[0045] Figure 5 The three-dimensional structure of the oxygen sensor (31, 32, 33, 34, 35) installed on the wiring harness connector positioning plate 6 of the utility model is shown. Figure 5 As shown, each oxygen sensor (31, 32, 33, 34, 35) is respectively mounted in a corresponding cross-shaped slot (81, 82, 83, 84, 85) fixed on the wiring harness connector positioning plate 6. Probe through holes (71', 72', 73', 74', 75') are provided on the baffle plates of the corresponding cross-shaped slots (81, 82, 83, 84, 85), and five test probes (71, 72, 73, 74, 75) mounted on the test probe mounting plate extend from their respective probe through holes (71', 72', 73', 74', 75') and are respectively connected to the corresponding oxygen sensors (31, 32, 33, 34, 35) in the corresponding cross-shaped slots (81, 82, 83, 84, 85).

[0046] The assembly steps are as follows:

[0047] First, the tool fixing plate 1 is installed on the assembly line production equipment, the test probe mounting plate 5 is fixed on the tool fixing plate 1 , and the harness connector positioning plate 6 is connected to the test probe mounting plate 5 through the fastening nut 4 .

[0048] Secondly, the wire harness connector of the oxygen sensor 3 is placed into the wire harness connector positioning plate 6 , and the connector clamping block 2 clamps the wire harness connector of the oxygen sensor 3 .

[0049] Next, the pin in the harness connector of the oxygen sensor 3 is brought into contact with the test probe 7, the test probe 7 is mounted and fixed on the test probe mounting plate 5, and the oxygen sensor 3 is connected to the test circuit via a wire.

[0050] Finally, the corresponding test of the oxygen sensor 3 is performed, and after the test is completed, the wiring harness connector of the oxygen sensor 3 is removed from the detection tooling.

[0051] There are 8 kinds of existing wiring harness connectors for the small oxygen sensor 3. The detection device needs to design tooling respectively according to the structure of the wiring harness connector of the oxygen sensor 3 and the position of the pin. In this way, 8 kinds of tooling need to be designed for 8 kinds of connectors. Not only is the tooling production cost high, but also the tooling changeover during the production process is extremely inconvenient, requiring shutdown for disassembly and assembly, which wastes work time and is extremely unfavorable for product production and market promotion.

[0052] The purpose of the utility model is to provide a small oxygen sensor fast changeover detection tooling, through the improvement of the layout of the detection probe and the wiring harness connector positioning structure, it is realized that only one detection tooling can be compatible with 8 types of wiring harness connectors of small oxygen sensors 3, which not only reduces the tooling cost, but also can achieve the changeover without stopping the machine, greatly saving the man-hours of production changeover, thereby improving production efficiency. The utility model can be compatible with 8 types of wiring harness connectors of small oxygen sensors 3, the tooling cost is 1 / 8 of the original, and the man-hours of production changeover are also reduced, and the tooling changeover time is reduced by 30 minutes per day.

[0053] The utility model has the following advantages over the prior art:

[0054] 1. According to the structures and pin positions of the wiring harness connectors of the eight oxygen sensors 3, the position of the test probe 7 on the test probe mounting plate 5 is optimized and the contact area of ​​the pin part of the test probe 7 that can contact the wiring harness connector of the oxygen sensor 3 is maximized, thereby achieving a set of probes that can be reliably electrically connected to the wiring harness connectors of eight different oxygen sensors 3.

[0055] 2. The detection tooling of the utility model consists of two modules: a test probe mounting plate 5 and a harness connector positioning plate 6. The costly and complex electrical connection circuits are all arranged on the probe mounting plate, and the cost-effective and simple-structured harness connector positioning plate 6 is the electrical connection interface of the eight types of oxygen sensors 3. In this way, plugging and unplugging will not affect the life of the electrical connection circuit, so that the detection tooling not only supports the detection of multiple types of oxygen sensors 3 but also has a long service life, thereby greatly reducing the production cost.

[0056] The above describes the implementation method of the small oxygen sensor quick change detection tooling of the present invention, and its purpose is to explain the spirit of the present invention. Please note that those skilled in the art can modify and combine the features of the above-mentioned implementation methods without departing from the spirit of the present invention. Therefore, the present invention is not limited to the above-mentioned implementation methods. The specific features of the small oxygen sensor quick change detection tooling, such as shape, size and position, can be specifically designed according to the functions of the features disclosed above, and these designs can be implemented by those skilled in the art. Moreover, the technical features disclosed above are not limited to the combination with other features that have been disclosed. Those skilled in the art can also make other combinations between the technical features according to the purpose of the utility model, so as to achieve the purpose of the utility model.

Claims

1. A small oxygen sensor quick change detection tooling, characterized in that: It includes a wiring harness connector positioning plate, a test probe mounting plate and a tooling fixing plate; The wiring harness connector positioning plate and the test probe mounting plate are fixedly connected to each other via a bolt structure; The bottoms of the wiring harness connector positioning plate and the test probe mounting plate are detachably fixed to the tooling fixing plate; The wiring harness connector positioning plate is provided with a cross-shaped slot that matches the shape of the oxygen sensor shell, the inner side of the cross-shaped slot is provided with a baffle to prevent the oxygen sensor from sliding out, and the baffle is provided with a probe through hole for connecting a test probe; A joint clamping block is provided below the groove body of the cross-shaped slot. The joint clamping block is a protruding upward hook-shaped lifting surface. The lifting surface can support and fix the front end part of the oxygen sensor embedded in the cross-shaped slot so that it is tightly fixed in the cross-shaped slot.

2. The small oxygen sensor quick changeover detection tooling according to claim 1 is characterized in that: Two pairs of screw holes are arranged at corresponding positions of the wiring harness connector positioning plate and the test probe mounting plate, and the wiring harness connector positioning plate and the test probe mounting plate are detachably fixedly connected together by tightening nuts.

3. The small oxygen sensor quick changeover detection tooling according to claim 1 is characterized in that: The cross-shaped slots are vertical slots and horizontal slots that intersect and communicate with each other; wherein, The vertical groove is a rectangular groove body, the horizontal groove is a flat cylindrical groove body, and the horizontal groove and the vertical groove respectively match the flat circular shape of the main shell of the oxygen sensor and the convex structures above and below the main shell.

4. The small oxygen sensor quick changeover detection tooling according to any one of claims 1 to 3, characterized in that: The connector clamping block is an elastic telescopic structure or a bolt positioning structure, and the connector clamping block is arranged in a telescopic slot below a corresponding cross-shaped slot of the wiring harness connector positioning plate.

5. The small oxygen sensor quick changeover detection tooling according to claim 4 is characterized in that: If the connector clamping block is an elastic telescopic structure, a spring is fixed on the inner side of the upper curved hook-shaped lifting surface of the connector clamping block, and the other end of the spring is fixed in the telescopic groove below the corresponding cross-shaped groove of the wiring harness connector positioning plate, so that the upper curved hook-shaped lifting surface applies a force to the front end of the oxygen sensor in the direction of the groove body of the wiring harness connector positioning plate, thereby tightly fixing the front end part of the oxygen sensor in the cross-shaped groove.

6. The small oxygen sensor quick changeover detection tooling according to claim 4 is characterized in that: If the connector clamping block is a bolt positioning structure, a bolt positioning support platform fixed on the wiring harness connector positioning plate is provided below the connector clamping block; The bolt positioning lifting platform and the corresponding positions of the connector clamping block are provided with one or more bolt holes, which can accurately position the height and / or telescopic state of the connector clamping block, so that the upward curved hook-shaped lifting surface applies a force in the direction of the groove body of the wiring harness connector positioning plate to the front end of the oxygen sensor, thereby tightly fixing the front end part of the oxygen sensor in the cross-shaped slot.

7. The small oxygen sensor quick changeover detection tooling according to any one of claims 1 to 3, characterized in that: One or more test probes are arranged on the test probe mounting plate according to the position of the probe through hole of the wiring harness connector positioning plate for connecting the test probe; and, The probe is fixed on a protruding cylindrical boss on the connecting surface of the test probe mounting plate; wherein the cylindrical boss matches the cylindrical groove on the back side of the baffle of the cross-shaped slot of the wiring harness connector positioning plate, so as to locate the position of the test probe mounting plate relative to the wiring harness connector positioning plate, thereby locating the position of the test probe relative to the oxygen sensor.

8. The small oxygen sensor quick changeover detection tooling according to claim 1 is characterized in that: The tooling fixing plate is provided with a first sliding portion, a fixing portion and a second sliding portion in sequence from left to right; wherein the fixing portion is located between the first sliding portion and the second sliding portion; The first sliding portion is located on the fixed side of the wiring harness connector positioning plate, and the second sliding portion is located on the fixed side of the test probe mounting plate; A first connecting guide rail and a second connecting guide rail perpendicular to the wiring harness connector positioning plate are respectively arranged below the first sliding portion and the second sliding portion, so that the tooling fixing plate can slide forward along the guide rail in a direction perpendicular to the wiring harness connector positioning plate; and The second sliding portion tilts upward, so that the height of the second connecting guide rail is higher than the height of the fixing portion.

9. The small oxygen sensor quick changeover detection tooling according to claim 8 is characterized in that: A hook clip for fixing tooling or equipment is also provided on the top surface of the first sliding portion; and Blocking pieces are arranged on the front side and the right side of the hook clip.

10. The small oxygen sensor quick changeover detection tooling according to claim 8, characterized in that: The top surface of the middle part of the fixing portion is provided with bolt holes for fixing the wiring harness connector positioning plate and the test probe mounting plate.

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