Local height measuring clamp for shell of oxygen sensor

Abstract

The utility model provides a local height measuring clamp for an oxygen sensor shell, which comprises a base and a detection plate, two vertical guide rods are arranged on the base, and a positioning pin for positioning an opening at the bottom end of the oxygen sensor shell is arranged on the base between the two guide rods. The detection plate is slidably connected with the guide rod through the guide sleeve, and the bottom surface of the detection plate is provided with a positioning hole for embedding the outer neck part of the top end of the oxygen sensor shell. According to the utility model, the problem of how to accurately measure the local height of the oxygen sensor shell under the condition that the oxygen sensor shell is not damaged in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of measuring the local height of an oxygen sensor housing, and in particular to a fixture for measuring the local height of an oxygen sensor housing. Background Technology

[0002] The existing oxygen sensor housing 1 includes three sections: a top outer neck 11, a middle protective tube section 12, and a bottom opening (also referred to as "mouth section 13"). The outer diameter of the outer neck 11 is smaller than the outer diameter of the protective tube section 12. A conical connecting section 14 is provided between the outer neck 11 and the protective tube section 12. The outer diameter of the mouth section 13 is larger than the outer diameter of the protective tube section 12. A stepped section 15 is formed between the inner wall of the mouth section 13 and the inner wall of the protective tube section 12. The height between the stepped section 15 and the top of the conical connecting section 14 is called the "local height H". Figure 1 The connection between the conical surface connecting part 14 and the protective tube part 12 is chamfered. Here, "the top of the conical surface connecting part 14" refers to the lower edge of the chamfer. Due to the strict requirements on the size of the oxygen sensor housing, the "local height H" cannot be directly measured. Each time, the part must be cut open and damaged for measurement, and full measurement cannot be performed, resulting in an increase in the scrap and defects of the oxygen sensor housing.

[0003] Therefore, how to accurately measure the local height of the oxygen sensor housing without damaging it has become a technical problem that needs to be solved. Utility Model Content

[0004] The purpose of this utility model is to provide a fixture for measuring the local height of an oxygen sensor housing, which mainly solves the problem in the prior art of how to accurately measure the local height of an oxygen sensor housing without damaging it.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: a local height measuring fixture for an oxygen sensor housing, characterized in that: the local height measuring fixture for an oxygen sensor housing includes a base and a detection plate, the base is provided with two vertical guide rods, the base between the two guide rods is provided with a positioning pin for positioning the opening at the bottom end of the oxygen sensor housing, the detection plate is slidably connected to the guide rods through a guide sleeve, and the bottom surface of the detection plate is provided with a positioning hole for embedding the outer neck at the top end of the oxygen sensor housing.

[0006] Furthermore, the shape of the positioning pin matches the shape of the inner sidewall of the oxygen sensor housing opening;

[0007] The top of the positioning pin corresponds to the stepped part of the oxygen sensor housing opening.

[0008] Furthermore, the shape of the positioning hole matches the shape of the outer side wall of the outer neck of the oxygen sensor housing.

[0009] Furthermore, the base is also equipped with two vertical scales, with a positioning pin located between the two vertical scales;

[0010] The scale of the vertical ruler is distributed from bottom to top, and the starting scale of the vertical ruler corresponds to the height of the top of the locating pin.

[0011] Furthermore, a vertical ruler extends through the testing plate.

[0012] In view of the above technical features, the present invention has the following beneficial effects:

[0013] 1. This utility model provides a fixture for measuring the local height of an oxygen sensor housing. It uses a positioning pin and a detection plate to clamp and position the oxygen sensor housing. A height gauge is used to measure the local height of the oxygen sensor housing, and the value of the local height of the oxygen sensor housing is calculated. The whole measurement process is simple and convenient. It does not require cutting open the oxygen sensor housing, and it can measure the local height of the oxygen sensor housing without causing the oxygen sensor housing to be scrapped or increase the number of defects.

[0014] 2. The present invention provides a fixture for measuring the local height of an oxygen sensor housing, which adds a vertical scale, allowing direct observation of the local height of the oxygen sensor housing without further calculation, thereby improving the measurement efficiency of the local height of the oxygen sensor housing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the oxygen sensor housing in specific embodiment 1.

[0016] Figure 2 This is a schematic diagram of the structure of a local height measuring fixture for an oxygen sensor housing in specific embodiment 1. Figure 1 (Front view)

[0017] Figure 3 yes Figure 2 Sectional view of AA.

[0018] Figure 4 This is a schematic diagram of the structure of a local height measuring fixture for an oxygen sensor housing in specific embodiment 1. Figure 2 (3D view)

[0019] Figure 5 This is a schematic diagram of the structure of a local height measuring fixture for an oxygen sensor housing in specific embodiment 2. Figure 3 (Front view)

[0020] Figure 6 yes Figure 5 A cross-sectional view of BB.

[0021] In the figure: 1. Oxygen sensor housing; 11. Outer neck; 12. Protective tube section; 13. Mouth section; 14. Conical connecting section; 15. Step section; 16. Arc-shaped chamfer; H. Local height; 2. Base; 3. Guide rod; 4. Guide sleeve; 5. Detection plate; 51. Positioning hole; 6. Positioning pin; 7. Vertical scale; 8. Stop section. Detailed Implementation

[0022] The present invention will be further described below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0023] See Figures 1 to 4 In specific embodiment 1, this embodiment 1 provides a local height measuring fixture for an oxygen sensor housing. The local height measuring fixture for an oxygen sensor housing includes a base 2 and a detection plate 5. The base 2 is provided with two vertical guide rods 3. The base 2 between the two guide rods 3 is provided with a positioning pin 6 for positioning the opening 13 at the bottom end of the oxygen sensor housing 1. The detection plate 5 is slidably connected to the guide rods 3 through a guide sleeve 4. The bottom surface of the detection plate 5 is provided with a positioning hole 51 for embedding the outer neck 11 at the top end of the oxygen sensor housing 1.

[0024] The shape of the positioning pin 6 matches the shape of the inner wall of the opening 13 of the oxygen sensor housing 1, and the top of the positioning pin 6 corresponds to the step 15 of the opening 13 of the oxygen sensor housing 1. When the oxygen sensor housing 1 is placed on the positioning pin 6, the positioning pin 6 is embedded in the opening 13 of the oxygen sensor housing 1, and the top surface of the positioning pin 6 abuts against the step 15 of the opening 13 of the oxygen sensor housing 1. This not only elevates and positions the oxygen sensor housing 1 from below, but also positions the oxygen sensor housing 1 on the horizontal plane, preventing the oxygen sensor housing 1 from shaking and ensuring that the oxygen sensor housing 1 is in a vertical position, so that the outer neck 11 of the oxygen sensor housing 1 can be smoothly inserted into the positioning hole 51 on the detection plate 5. The shape of the positioning hole 51 matches the shape of the outer wall of the outer neck 11 of the oxygen sensor housing 1.

[0025] In use, first pull the detection plate 5 upward to its maximum position (for example, the top of the detection plate 5 is close to the stop part 8 at the top of the guide rod 3), and put the oxygen sensor housing 1 into the detection fixture, that is, the positioning pin 6 is embedded in the opening 13 of the oxygen sensor housing 1, and the top surface of the positioning pin 6 abuts against the step part 15 of the opening 13 of the oxygen sensor housing 1. Then, move the detection plate 5 down until the outer neck 11 of the oxygen sensor housing 1 can be smoothly inserted into the positioning hole 51 on the detection plate 5, and the detection plate 5 abuts against the conical connecting part 14. Then, use a height gauge to measure the height of the top surface of the detection plate 5 (i.e., the first height), the distance from the top surface of the positioning pin 6 to the ground of the base 2 is the second height, and the height of the detection plate 5 is the third height. The difference between the first height and the second and third heights is the local height H of the oxygen sensor housing 1. At this time, the accurate measurement of the local height H is completed. If the value of the local height H is within the tolerance range, it is considered qualified; if the value of the local height H exceeds the tolerance range, it is considered unqualified.

[0026] See Figure 5 and Figure 6 In specific embodiment 2, an oxygen sensor housing local height measuring fixture is provided. The difference between embodiment 2 and embodiment 1 is that the base 2 is further provided with two vertical scales 7, and the positioning pin 6 is located between the two vertical scales 7. The scales of the vertical scales 7 are distributed from bottom to top, and the starting scale of the vertical scales 7 corresponds to the top height of the positioning pin 6. The vertical scales 7 penetrate the detection plate 5. After the oxygen sensor housing 1 is placed in the detection fixture, the detection plate 5 moves down and abuts against the conical connecting part 14. The intersection of the bottom surface of the detection plate 5 and the scale of the vertical scales 7 can be directly observed with the naked eye, directly obtaining the value of the local height H of the oxygen sensor housing 1, thus improving detection efficiency.

[0027] In addition, the two vertical scales 7 are located on both sides of the positioning pin 6. If the corresponding values ​​at the intersection of the bottom surface of the detection plate 5 and the scales of the two vertical scales 7 are the same, it means that the detection plate 5 is in a horizontal state. If the corresponding values ​​at the intersection of the bottom surface of the detection plate 5 and the scales of the vertical scales 7 are not the same, it means that the detection plate 5 is in a tilted state. The angle of the detection plate 5 needs to be adjusted to improve the accuracy of the detection of the local height H of the oxygen sensor housing 1.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0030] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A fixture for measuring the local height of an oxygen sensor housing, characterized in that: The oxygen sensor housing local height measuring fixture includes a base (2) and a detection plate (5). The base (2) is provided with two vertical guide rods (3). The base (2) between the two guide rods (3) is provided with a positioning pin (6) for positioning the opening (13) at the bottom of the oxygen sensor housing (1). The detection plate (5) is slidably connected to the guide rods (3) through a guide sleeve (4). The bottom surface of the detection plate (5) is provided with a positioning hole (51) for embedding the outer neck (11) at the top of the oxygen sensor housing (1).

2. The oxygen sensor housing local height measuring fixture according to claim 1, characterized in that: The shape of the positioning pin (6) matches the shape of the inner sidewall of the opening (13) of the oxygen sensor housing (1); The top of the positioning pin (6) corresponds to the stepped part (15) of the opening (13) of the oxygen sensor housing (1).

3. The oxygen sensor housing local height measuring fixture according to claim 2, characterized in that: The shape of the positioning hole (51) matches the shape of the outer side wall of the outer neck (11) of the oxygen sensor housing (1).

4. A local height measuring fixture for an oxygen sensor housing according to claim 1, 2, or 3, characterized in that: The base (2) is also provided with two vertical scales (7), and the positioning pin (6) is located between the two vertical scales (7); The scale of the vertical scale (7) is distributed from bottom to top, and the starting scale of the vertical scale (7) corresponds to the top height of the positioning pin (6).

5. The oxygen sensor housing local height measuring fixture according to claim 4, characterized in that: The vertical ruler (7) penetrates the detection plate (5).

Images