Salt spray test support for nitrogen-oxygen sensor accessories
By designing a salt spray test bracket for nitrogen oxygen sensor accessories including a carrier seat, support bar and support rod, the problems of salt spray contact blind spots and salt liquid accumulation in traditional salt spray test brackets are solved, and higher test accuracy and salt liquid recycling are achieved.
Patent Information
- Application Number
- CN202421190234.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-05-28
AI Technical Summary
When conducting salt spray test of nitrogen oxygen sensor protective cover, traditional salt spray test brackets are prone to salt spray contact blind spots and salt liquid accumulation, which affects the accuracy of the test results.
A salt spray test bracket for nitrogen oxygen sensor accessories is designed, including a base plate and multiple load-bearing components. The load-bearing component consists of a load-bearing seat, a support bar and a support bar. The support bar is hinged with the support bar. The support bar is arranged on the bottom surface of the load-bearing seat. The support bar can be adjusted to accommodate protective covers of different specifications, and the protective cover is placed inclined to allow the salt liquid to flow.
The device reduces the contact area between the protective cover and the test bracket, so that the protective cover is in full contact with the salt spray. At the same time, through the inclined design and the liquid collection tank, the accumulation of salt liquid is avoided, the result accuracy of the salt spray test is improved, and the recycling and utilization of salt liquid is facilitated.
Smart Images
Figure CN222866500U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of automobile parts processing equipment, in particular to a salt spray test bracket for nitrogen and oxygen sensor parts. Background Art
[0002] The nitrogen oxide sensor is an automotive accessory used to detect the nitrogen oxide concentration in the engine exhaust gas to meet the closed-loop control requirements of the engine after-treatment system and the needs of the on-board OBD diagnostic system. Usually, the nitrogen oxide sensor mainly consists of three parts: the sensor probe, the control module and the connection plug. When in use, the sensor probe needs to be inserted into the engine exhaust pipe so that it can contact the exhaust gas generated by the engine to detect the nitrogen oxide concentration in the exhaust gas.
[0003] Since the temperature inside the engine exhaust pipe is high and the chemicals contained in the exhaust gas are corrosive, in order to protect the electronic components inside the sensor probe, a protective cover is usually installed on the outside of the common sensor probe. When producing and processing the protective cover, the staff needs to use a salt spray test machine to conduct a salt spray test on the protective cover to determine whether the current batch of products has good corrosion resistance.
[0004] However, since the protective cover is usually configured as a tubular structure with one end blocked, and air guide holes allowing exhaust gas to flow need to be provided on the side wall of the protective cover, when the protective cover is directly placed inside the salt spray tester, the part where the outer wall of the protective cover contacts the inside of the salt spray tester is prone to salt spray contact dead angles, and salt spray solution is also prone to accumulation inside the protective cover, which will affect the accuracy of the salt spray test results and cause the staff to misjudge the corrosion resistance of the protective cover. Utility Model Content
[0005] In view of this, the utility model aims to provide a salt spray test bracket for nitrogen oxide sensor accessories to solve the above technical problems.
[0006] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0007] A salt spray test bracket for nitrogen oxygen sensor accessories comprises a base plate and a plurality of bearing components, wherein a liquid collecting tank and a plurality of mounting slots for accommodating the bearing components are provided on the top surface of the base plate, and the plurality of mounting slots are all connected with the liquid collecting tank; the bearing component is detachably arranged inside the mounting slot, and the bearing component comprises: a bearing seat, a support bar and a plurality of support rods; a bearing tank is provided on the top surface of the bearing seat, a liquid discharge port is provided on the side wall of the bearing seat close to the liquid collecting tank, and the bearing tank is connected with the liquid collecting tank through the liquid discharge port; the support bar is arranged on the bottom surface of the bearing tank, the length direction of the support bar is parallel to the length direction of the bearing tank, and the top surface height of the support bar is lower than the top surface height of the bearing seat; the plurality of support rods are evenly arranged along the length direction of the support bar, and the bottom end of each support rod is hinged to the top surface of the support bar.
[0008] Furthermore, the bottom surface of the bearing groove is an inclined surface, and an end of the bottom surface of the bearing groove close to the liquid discharge port is lower than an end away from the liquid discharge port.
[0009] Furthermore, a connecting ear is provided on the support bar, a connecting seat is provided at the bottom end of the support rod, and the connecting seat is connected to the connecting ear through a damping shaft.
[0010] Furthermore, the support rods of any two adjacent bearing assemblies are arranged in a staggered manner.
[0011] Furthermore, a drainage pipe connected to the liquid collecting tank is provided on the side wall of the bottom plate.
[0012] Furthermore, a plurality of guide holes are provided on the top surface of the bottom plate.
[0013] Furthermore, a handle is provided on the side wall of the bottom plate.
[0014] Compared with the prior art, the salt spray test bracket for nitrogen and oxygen sensor accessories described in the utility model has the following advantages:
[0015] (1) The salt spray test stand for nitrogen oxide sensor accessories described in the utility model has a plurality of bearing components on the bottom plate, and a support bar and a support rod are provided on the bearing seat of each bearing component. When conducting a salt spray test on the nitrogen oxide sensor protective cover, the staff can put the protective cover on the support rod, and tilt the protective cover by rotating the support rod, so that the end of the protective cover with an opening is against the top surface of the support bar. At this time, the support rod will form a line contact with the inner wall of the protective cover, and the support bar will form a point contact with the end of the protective cover with an opening, so that the protective cover is stably placed on the device. Compared with the traditional salt spray test stand, the contact area formed between the device and the protective cover is smaller, so that the protective cover can be fully contacted with the salt spray. At the same time, because the protective cover is placed on the device in an inclined posture, when salt liquid condenses on the protective cover, the condensed salt liquid will leave the protective cover under the action of gravity and flow along the bearing groove to the liquid collecting groove, thereby preventing the accuracy of the salt spray test result from being affected by the accumulation of salt liquid. In addition, since the support bar is arranged on the bottom surface of the bearing seat and the top surface height of the support bar is lower than the top surface height of the bearing seat, when the salt solution flows along the bearing groove to the inside of the collecting groove, the contact part of the protective cover and the support bar can also contact with the flowing salt solution, so that the contact part of the protective cover and the support bar can be subjected to corrosion test with the help of the flowing salt solution, thereby improving the accuracy of the salt spray test of the protective cover.
[0016] (2) The salt spray test bracket for nitrogen oxide sensor accessories described in the utility model has an inclined bottom surface of the bearing tank, and a drainage pipe connected to the liquid collecting tank is provided on the bottom plate. When in use, the inclination of the bottom surface of the bearing tank facilitates the entry of the salt liquid into the liquid collecting tank, and the staff can align the drainage pipe with the salt liquid recovery port of the salt spray test machine, thereby facilitating the recycling of the salt liquid. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0018] Figure 1 This is a schematic diagram of the structure of a salt spray test bracket for nitrogen and oxygen sensor accessories according to an embodiment of the utility model;
[0019] Figure 2 An exploded view of a salt spray test bracket for a nitrogen oxygen sensor accessory according to an embodiment of the utility model;
[0020] Figure 3 A cross-sectional view of a salt spray test bracket for a nitrogen oxygen sensor accessory according to an embodiment of the utility model;
[0021] Figure 4This is a schematic diagram of the structure of the bottom plate according to an embodiment of the utility model;
[0022] Figure 5 It is an exploded view of the bearing assembly described in the embodiment of the utility model.
[0023] Description of reference numerals:
[0024] 1-bottom plate; 11-liquid collecting tank; 12-installation tank; 13-drain pipe; 14-flow guide hole; 15-handle; 2-bearing seat; 21-bearing tank; 22-drain port; 3-support bar; 31-connecting ear; 4-support rod; 41-connecting seat; 5-protective cover. DETAILED DESCRIPTION
[0025] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0026] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.
[0027] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.
[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0029] A salt spray test bracket for nitrogen and oxygen sensor accessories, the structure of which can be Figure 1-Figure 5As shown in the figure, the salt spray test bracket for nitrogen and oxygen sensor accessories in this embodiment includes a base plate 1 and multiple bearing components, wherein the multiple bearing components are detachably arranged on the base plate 1. When in use, the staff can place the protective cover 5 to be processed on the bearing component, and transport the multiple bearing components as a whole through the base plate 1, so as to put the device and the protective cover 5 to be processed into the salt spray test machine together.
[0030] Figure 4 It is a structural schematic diagram of the base plate 1. As shown in the figure, a liquid collecting tank 11 for collecting saline solution and a plurality of mounting tanks 12 for accommodating bearing components are provided on the top surface of the base plate 1, and the plurality of mounting tanks 12 are all connected to the liquid collecting tank 11. Figure 5 The schematic diagram of the bearing assembly is shown in the figure. The bearing assembly includes: a bearing seat 2, a support bar 3 and a plurality of support rods 4, wherein a bearing groove 21 is provided on the top surface of the bearing seat 2, a liquid discharge port 22 is provided on the side wall of the bearing seat 2 close to the liquid collecting tank 11, and the bearing groove 21 is connected with the liquid collecting tank 11 through the liquid discharge port 22. The support bar 3 is arranged on the bottom surface of the bearing groove 21, the length direction of the support bar 3 is parallel to the length direction of the bearing groove 21, and the top surface height of the support bar 3 is lower than the top surface height of the bearing seat 2. The plurality of support rods 4 are evenly arranged along the length direction of the support bar 3, and the bottom end of each support rod 4 is hinged to the top surface of the support bar 3.
[0031] like Figure 1 , Figure 2 and Figure 3 As shown, when in use, the staff can put the protective cover 5 on the support rod 4, and tilt the protective cover 5 by rotating the support rod 4, so that the end of the protective cover 5 with the opening is against the top surface of the support bar 3. At this time, the support rod 4 will form a line contact with the inner wall of the protective cover 5, and the support bar 3 will form a point contact with the end of the protective cover 5 with the opening, so that the contact area between the protective cover 5 and the device can be reduced, so that the protective cover 5 is convenient for full contact with the salt spray.
[0032] Generally, the duration of the salt spray test of the protective cover 5 is usually more than 100 hours. Therefore, when the protective cover 5 is in the salt spray tester for a long time, the fine droplets in the salt spray will condense on the protective cover 5 to form salt solution. Since the protective cover 5 is placed on the device in an inclined posture, when the salt solution appears on the protective cover 5, the salt solution will leave the protective cover 5 under the action of gravity and flow along the bearing groove 21 to the collecting groove 11, so that the salt solution can be prevented from accumulating on the protective cover 5, thereby improving the accuracy of the result of the salt spray test.
[0033] In addition, since the device can guide the saline solution to the liquid collecting tank 11 through the bearing groove 21, and the top surface height of the support bar 3 is lower than the top surface height of the bearing seat 2, when the saline solution flows inside the bearing groove 21, the contact portion of the protective cover 5 with the support bar 3 can be in contact with the flowing saline solution, thereby using the flowing saline solution to perform a corrosion test on the end of the protective cover 5 with an opening, thereby further improving the accuracy of the salt spray test of the protective cover 5.
[0034] In order to realize the hinge connection between the support rod 4 and the support bar 3, the present embodiment may be provided with a connecting ear 31 on the support bar 3. Accordingly, a connecting seat 41 may be provided at the bottom end of the support rod 4, and the connecting seat 41 should be connected to the connecting ear 31 through a damping shaft. When in use, the staff can adjust the angle formed between the support rod 4 and the support bar 3 according to the diameter of the protective cover 5 to be processed, so that the protective covers 5 of different diameter specifications can be stably placed on the present device.
[0035] In addition, since the support rod 4 is hinged to the support bar 3, the staff can also adjust the angle formed between the support rod 4 and the support bar 3 according to the diameter specification of the protective cover 5 to be processed, so as to adapt to protective covers 5 of different specifications.
[0036] In actual use, the staff may need to perform salt spray tests on multiple protective covers 5 at the same time. Therefore, in order to avoid mutual shielding of multiple protective covers 5 on the device, the support rods 4 on any two adjacent bearing components should be arranged in a staggered manner. In addition, in order to prevent the bottom plate 1 from affecting the flow effect of salt spray inside the salt spray tester, a plurality of guide holes 14 may be provided on the top surface of the bottom plate 1 to facilitate the salt spray to pass through the bottom plate 1 along the guide holes 14.
[0037] Optionally, in order to facilitate the collection of the saline solution in the device, the bottom surface of the bearing tank 21 can be set as an inclined surface, and the end of the bottom surface of the bearing tank 21 close to the drain port 22 should be lower than the end away from the drain port 22, so that the saline solution in the bearing tank 21 can smoothly flow into the inside of the collecting tank 11. Correspondingly, a drainage pipe 13 connected to the collecting tank 11 can also be provided on the side wall of the bottom plate 1. When in use, the staff can align the drainage pipe 13 with the saline solution recovery port of the salt spray test machine, so as to guide the saline solution inside the collecting tank 11 into the inside of the saline solution recovery port, so as to facilitate the recycling of the saline solution.
[0038] As an optional implementation of this embodiment, in order to facilitate the staff to move the device, a handle 15 is provided on the side wall of the bottom plate 1. The staff can put the device into or move it out of the salt spray test machine by grasping the handle 15, thereby improving the convenience of use of the device.
[0039] The effects of the above scheme are described below:
[0040] This embodiment provides a salt spray test bracket for nitrogen and oxygen sensor accessories, which can place the protective cover in an inclined posture and reduce the contact area between the protective cover and the device, so that the protective cover is fully in contact with the salt spray and avoids the accumulation of salt liquid inside the protective cover, thereby improving the accuracy of the salt spray test results. In addition, the device can also recover the salt liquid condensed on the protective cover, thereby improving the utilization rate of the salt liquid.
[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A salt spray test bracket for nitrogen and oxygen sensor accessories, characterized in that: The invention comprises a bottom plate (1) and a plurality of bearing components, wherein a liquid collecting tank (11) and a plurality of mounting grooves (12) for accommodating the bearing components are provided on the top surface of the bottom plate (1), and the plurality of mounting grooves (12) are all connected to the liquid collecting tank (11); the bearing components are detachably arranged inside the mounting grooves (12), and the bearing components comprise: a bearing seat (2), a support bar (3) and a plurality of support rods (4); a bearing groove (21) is provided on the top surface of the bearing seat (2), and a side wall of the bearing seat (2) close to the liquid collecting tank (11) is provided with a bearing groove (21). A liquid discharge port (22) is provided on the support groove (21), and the support groove (21) is connected to the liquid collecting groove (11) through the liquid discharge port (22); the support bar (3) is arranged on the bottom surface of the support groove (21), the length direction of the support bar (3) is parallel to the length direction of the support groove (21), and the top surface height of the support bar (3) is lower than the top surface height of the support seat (2); a plurality of support rods (4) are evenly arranged along the length direction of the support bar (3), and the bottom end of each support rod (4) is hinged to the top surface of the support bar (3).
2. The salt spray test bracket for nitrogen and oxygen sensor accessories according to claim 1 is characterized in that: The bottom surface of the bearing groove (21) is an inclined surface, and an end of the bottom surface of the bearing groove (21) close to the liquid discharge port (22) is lower than an end away from the liquid discharge port (22).
3. The salt spray test bracket for nitrogen and oxygen sensor accessories according to claim 1 is characterized in that: The support bar (3) is provided with a connecting ear (31), and the bottom end of the support rod (4) is provided with a connecting seat (41), and the connecting seat (41) is connected to the connecting ear (31) via a damping shaft.
4. The salt spray test bracket for nitrogen and oxygen sensor accessories according to claim 1, characterized in that: The support rods (4) of any two adjacent bearing assemblies are arranged in a staggered manner.
5. The salt spray test bracket for nitrogen and oxygen sensor accessories according to claim 1, characterized in that: A liquid discharge pipe (13) connected to the liquid collecting tank (11) is provided on the side wall of the bottom plate (1).
6. The salt spray test bracket for nitrogen and oxygen sensor accessories according to claim 1, characterized in that: A plurality of guide holes (14) are also provided on the top surface of the bottom plate (1).
7. The salt spray test bracket for nitrogen and oxygen sensor accessories according to claim 1 is characterized in that: A handle (15) is provided on the side wall of the bottom plate (1).