Sensor positioning support and salt spray test box

Abstract

The utility model relates to a sensor positioning bracket and a salt spray test box. The sensor positioning bracket comprises at least two supporting arms, the at least two supporting arms are parallel to the first plane, the projections of the at least two supporting arms on the first plane are crossed into one point, and the at least two supporting arms are connected with each other; the supporting arm is provided with a sensor fixing position used for being connected with a sensor. The supporting arm is of a telescopic structure. According to the sensor positioning bracket and the salt spray test box, each sensor can be positioned at a required test position, so that the calibration test can be carried out smoothly, and the reliability of the calibration test can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of salt spray test, in particular to a sensor positioning bracket and a salt spray test box. Background Art

[0002] The salt spray test mainly simulates the salt spray environment in the working chamber of the salt spray test chamber to age the product. The salt spray test chamber is mainly suitable for salt spray corrosion tests on parts, electronic components, protective layers of metal materials, and industrial products. Since the temperature of the internal space of the salt spray test chamber is an important indicator to ensure the normal progress of the test, the salt spray test chamber needs to be calibrated for temperature deviation, temperature uniformity, temperature fluctuation, etc. before use. This requires the installation of multiple sensors at different heights in the working chamber. In related technologies, the sensors are usually installed on the sample rack. However, since there are many types of sample racks for different products and their structures are different, there will be a situation where some sensors cannot be positioned at the required test position, thereby affecting the reliability of the calibration test of the salt spray test chamber. Utility Model Content

[0003] Based on this, it is necessary to provide a sensor positioning bracket and a salt spray test chamber, which can position each sensor at the required test position to ensure the smooth progress of the calibration test and improve the reliability of the calibration test.

[0004] On one hand, an embodiment of the present application provides a sensor positioning bracket, which is applied to a salt spray test chamber. In one embodiment, the sensor positioning bracket includes at least two support arms, at least two support arms are parallel to a first plane, and the projections on the first plane intersect at a point, and at least two support arms are connected to each other; a sensor fixing position for connecting to a sensor is provided on the support arm;

[0005] Wherein, the supporting arm is constructed as a telescopic structure.

[0006] Since at least two support arms are parallel to the first plane, and their projections on the first plane intersect at a point, and the support arms are constructed as a retractable structure, after the sensor positioning bracket is placed in the working chamber of the salt spray test chamber, the sensor positioning bracket can be suspended at a preset position inside the working chamber by simply adjusting the length of each support arm so that the two ends of each support arm are respectively against the opposite inner cavity walls of the working chamber.

[0007] The support arm is provided with a sensor fixing position, and the sensor can be positioned at the required test position by fixing the sensor thereon, thereby ensuring the smooth progress of the calibration test of the salt spray test chamber and improving the reliability of the calibration test.

[0008] In one embodiment, the support arm includes a main body, a locking portion, and a telescopic portion connected to at least one end of the main body;

[0009] A sliding channel is provided in the main body at a position corresponding to the telescopic portion, and the telescopic portion is at least partially located in the corresponding sliding channel and can slide along the sliding channel relative to the main body;

[0010] The locking parts correspond to the telescopic parts one by one, and are used to relatively fix a corresponding set of telescopic parts and the sliding channel.

[0011] By setting the sliding channel, the telescopic part can slide relatively along the sliding channel, so that the relative position of the telescopic part and the main body can be changed, and the length of the support arm can be adjusted. When the telescopic part slides relative to the main body to the support arm of a suitable length, it can be locked by the locking part, so that the two ends of the support arm are pressed against the relative inner cavity walls in the working chamber. When all the support arms are adjusted in this way, the entire sensor positioning bracket can be suspended in the working chamber.

[0012] In one embodiment, the main body and the telescopic portion are both configured as rod-shaped structures;

[0013] The locking portion penetrates from the outer side of the main body into the sliding channel and is pressed against a portion of the corresponding telescopic portion located in the sliding channel.

[0014] With such arrangement, the telescopic part and the main body can be positioned relative to each other by the end of the locking part entering into the sliding channel to press against the telescopic part.

[0015] In one embodiment, telescopic parts are provided at both ends of the main body in the length direction.

[0016] Thus, the ends of each support arm have an adjustment function, which is more conducive to arranging the cross position of each support arm in the middle of the working chamber. Of course, due to the improvement in the adjustment freedom, the cross position of each support arm can also be adjusted according to the specific position of the sample rack.

[0017] In one embodiment, the sensor positioning bracket further includes a central axis, which passes through and is connected to the intersection of at least two support arms, so that the at least two support arms are rotatably connected to the central axis.

[0018] With such arrangement, the support arms can rotate relative to each other, so that the included angles of the support arms change, thereby being applicable to working chambers of different shapes.

[0019] In one embodiment, mounting holes are provided at positions corresponding to the intersection positions on each support arm, the support arms are stacked one on another, and the mounting holes of the support arms are coaxial, and the central axis passes through each mounting hole in sequence.

[0020] With such arrangement, when the supporting arms rotate relative to the central axis, they will not interfere with each other.

[0021] In one embodiment, flanges are provided at both ends of the central axis, and the projection of the flanges on the first plane covers the projection of the mounting hole on the first plane.

[0022] By providing the flange portion in this manner, it is possible to prevent each support arm from being separated from the central axis.

[0023] A second aspect of the embodiment of the present application provides a salt spray test box, comprising a box body and at least one sensor positioning bracket as described above; the box body has a working chamber;

[0024] The end of each supporting arm abuts against the inner wall of the working chamber.

[0025] In one embodiment, there are two sensor positioning brackets, and the two sensor positioning brackets are staggered with each other in the height direction of the working chamber.

[0026] With such arrangement, the sensors on the various sensor locator brackets can be arranged at different heights in the working chamber.

[0027] In one of the embodiments, the outer contour of the cross section of the working chamber along the height direction is a polygon;

[0028] Two ends of at least part of the support arms abut against oppositely disposed corners of the polygon.

[0029] Such an arrangement makes the positioning of the sensor positioning bracket more stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] FIG1 is a schematic diagram of the structure of a sensor positioning bracket provided in an embodiment of the present application;

[0031] FIG2 is a schematic diagram of the exploded structure of a sensor positioning bracket provided in an embodiment of the present application;

[0032] FIG3 is a schematic diagram of the structure of a salt spray test chamber provided in an embodiment of the present application.

[0033] Description of Figure Numbers:

[0034] 100, sensor positioning bracket; 10, support arm; 11, main body; 12, telescopic part; 13, locking part; 14, mounting hole; 20, central axis; 21, flange; 30, sensor; 31, detection end;

[0035] 200, salt spray test chamber; 210, box body; 220, working chamber;

[0036] Z, sensor fixing position. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0038] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0040] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0043] The sensor positioning bracket and the salt spray test chamber of the embodiment of the present application are described below in conjunction with the accompanying drawings. It should be noted that in the embodiment of the present application, the sensor positioning bracket is applied to the calibration test of the salt spray test chamber, and the temperature calibration test is described as an example. The sensor can be a temperature sensor. It is understandable that the application scenario of the sensor positioning bracket is not limited to this, and it can also be used in other types of salt spray test processes in the salt spray test chamber to position other types of sensors. In this case, the application method is similar to the calibration test and will not be repeated here.

[0044] FIG1 is a schematic diagram of the structure of a sensor positioning bracket provided in an embodiment of the present application, FIG2 is a schematic diagram of the exploded structure of a sensor positioning bracket provided in an embodiment of the present application, and FIG3 is a schematic diagram of the structure of a salt spray test chamber provided in an embodiment of the present application.

[0045] 1, 2 and 3, the embodiment of the present application provides a sensor positioning bracket 100, which is applied to a salt spray test chamber 200. The sensor positioning bracket 100 includes at least two support arms 10, at least two support arms 10 are parallel to a first plane, and the projections on the first plane intersect at a point, and at least two support arms 10 are connected to each other; a sensor fixing position Z for connecting to a sensor 30 is provided on the support arm 10. The support arm 10 is configured as a retractable structure.

[0046] Since at least two support arms 10 are parallel to the first plane, and the projections on the first plane intersect at a point, and the support arms 10 are constructed as a retractable structure, after the sensor 30 positioning bracket is placed in the working chamber 220 of the salt spray test box 200, the sensor positioning bracket 100 can be suspended at a preset position inside the working chamber 220 by simply adjusting the length of each support arm 10 so that the two ends of each support arm 10 are respectively against the opposite inner cavity walls of the working chamber 220.

[0047] The support arm 10 is provided with a sensor fixing position Z, and the sensor 30 is fixed on the sensor fixing position Z, and the sensor positioning bracket 100 is set at the target position in the working chamber 220, so that the sensor 30 can be positioned at the required test position. This ensures the smooth progress of the calibration test of the salt spray test chamber 200 and improves the reliability of the calibration test.

[0048] The sensor fixing position Z can be located near the two ends of the support arm 10, so that the sensor 30 can be set at a position not far from the inner wall of the working chamber 220. Of course, the position of the sensor fixing position Z can be set according to actual needs. In specific implementation, the sensor 30 can be bonded to the sensor fixing position Z by adhesive or the like.

[0049] In the embodiment of the present application, the support arm 10 includes a main body portion 11 , a locking portion 13 , and a telescopic portion 12 connected to at least one end portion of the main body portion 11 .

[0050] A sliding channel (not shown) is provided in the main body 11 at a position corresponding to the telescopic portion 12, and the telescopic portion 12 is at least partially located in the corresponding sliding channel and can slide along the sliding channel relative to the main body 11. The locking portion 13 is provided in a one-to-one correspondence with the telescopic portion 12, and is used to relatively fix a corresponding set of telescopic portions 12 and the sliding channel.

[0051] By providing a sliding channel, the telescopic part 12 can slide relatively along the sliding channel, so that the relative position of the telescopic part 12 and the main body 11 can be changed, so that the length of the support arm 10 can be adjusted. When the telescopic part 12 slides relative to the main body 11 to the appropriate length of the support arm 10, it can be locked by the locking part 13, so that the two ends of the support arm 10 are pressed against the opposite inner cavity walls in the working chamber 220. All the support arms 10 are adjusted in this way, and the entire sensor positioning bracket 100 can be suspended in the working chamber 220.

[0052] In the embodiment of the present application, the main body 11 and the telescopic portion 12 are both constructed as rod-shaped structures.

[0053] The locking portion 13 penetrates from the outer side of the main body 11 into the sliding channel, and is pressed against a portion of the corresponding telescopic portion 12 located in the sliding channel.

[0054] With such arrangement, the telescopic portion 12 and the main body 11 can be positioned relative to each other by the end of the locking portion 13 entering into the sliding channel to press against the telescopic portion 12 .

[0055] In a specific implementation, the cross section of the telescopic portion 12 may be circular, and the outer contour of the interface of the main body portion 11 may be square.

[0056] In the embodiment of the present application, telescopic portions 12 are provided at both ends of the main body 11 in the length direction.

[0057] In this way, the ends of each support arm 10 have an adjustment function, which is more conducive to arranging the cross position of each support arm 10 in the middle of the working chamber 220. Of course, due to the improvement in the adjustment freedom, the cross position of each support arm 10 can also be adjusted according to the specific position of the sample rack. Of course, the number of telescopic parts 12 can be set according to actual needs.

[0058] In addition, in the embodiment of the present application, the number of support arms 10 is two for illustration, and the number can also be set to other values ​​according to the shape of the working chamber 220 and the different test positions required by the sensor 30. In these cases, the structure of a single support arm 10 is similar to this and will not be repeated here.

[0059] In the embodiment of the present application, the sensor positioning bracket 100 further includes a central axis 20 , which passes through and is connected to the intersection of at least two support arms 10 , so that the at least two support arms 10 are rotatably connected to the central axis 20 .

[0060] With such arrangement, each support arm 10 can rotate relative to each other, so that the angle of each support arm 10 changes, so that it can be applied to working chambers 220 of different shapes. For example, for a working chamber 220 with a rectangular cross section, each end of each support arm 10 can be placed on the four corners of the rectangle, each support arm 10 is located on the diagonal of the rectangle, and the angle of each support arm 10 can change within a range of greater than 0° and less than or equal to 90°. With such arrangement, the sensor positioning bracket 100 has higher adaptability to different salt spray test chambers 200.

[0061] Each support arm 10 is provided with a mounting hole 14 at a position corresponding to the intersection position. The support arms 10 are stacked one on another, and the mounting holes 14 of each support arm 10 are coaxial. The central axis 20 passes through each mounting hole 14 in sequence.

[0062] In this way, when the support arms 10 rotate relative to the central axis 20, there will be no interference between them. The mounting holes 14 can be arranged along the radial direction of the support arms 10.

[0063] In the embodiment of the present application, flange portions 21 are provided at both ends of the central axis 20 , and the projection of the flange portions 21 on the first plane covers the projection of the mounting hole 14 on the first plane.

[0064] In this way, by providing the flange portion 21 , it is possible to prevent each support arm 10 from being separated from the central axis 20 .

[0065] 2 and 3 , the second aspect of the present application further provides a salt spray test box 200, including a box body 210 and at least one of the above-mentioned sensor positioning brackets 100. The box body 210 has a working chamber 220. The end of each support arm 10 abuts against the inner wall of the working chamber 220.

[0066] In the embodiment of the present application, there are two sensor positioning brackets 100 , and the two sensor positioning brackets 100 are staggered with each other in the height direction of the working chamber 220 .

[0067] With such configuration, the sensors 30 on the respective sensor 30 locator brackets can be arranged at different heights in the working chamber 220 .

[0068] The number of sensor positioning brackets 100 can be set as needed. For example, when the salt spray test box 200 is temperature calibrated, the working chamber 220 in the box body 210 can be divided into three horizontal test surfaces: upper, middle and lower. The distance between the upper test surface and the top wall of the working chamber 220 can be, for example, 1 / 10 of the height of the entire working chamber 220. The middle test surface needs to pass through the geometric center point in the working chamber 220, and the lower test surface needs to be approximately 10 mm above the bottom sample rack.

[0069] Thus, as shown in FIG3 , a sensor positioning bracket 100 needs to be arranged on each of the upper test surface and the lower test surface. For the sensor 30 on the middle test surface, it can be hung on the sensor positioning bracket 100 on the upper test surface by a wire or the like, so that the detection end 31 of the sensor 30 passes through the middle test surface. For example, the wire is hung at the intersection of the two support arms 10 on the upper layer, or hung on the central axis 20 of the upper sensor positioning bracket, so that the detection end 31 of the sensor 30 passes through the center point of the working chamber 220.

[0070] In the embodiment of the present application, the outer contour of the cross section of the working chamber 220 along the height direction is a polygon.

[0071] At least two ends of a portion of the support arm 10 abut against oppositely disposed corners of the polygon.

[0072] Such an arrangement makes the positioning of the sensor positioning bracket 100 more stable.

[0073] Specifically, the cross-section of the working chamber 220 in the box body 210 along the height direction can be a rectangle. During installation, the locking portion 13 is loosened to pull the telescopic portion 12 out and reach each corner, and then the locking portion 13 is locked so that each end of the support arm 10 is respectively against a corner of the rectangle, thereby realizing the positioning of the sensor positioning bracket 100. The sensor 30 can be positioned at each sensor fixing position Z. In this way, all sensor positioning brackets 100 of different heights are installed, and calibration begins. After calibration, the locking portion 13 is loosened, and the telescopic portion 12 is retracted into the corresponding sliding channel, so that the length of the support arm 10 can be shortened and the sensor positioning bracket 100 can be taken out.

[0074] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0075] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A sensor positioning bracket, used in a salt spray test chamber, characterized in that: The sensor positioning bracket comprises at least two support arms, the at least two support arms are parallel to the first plane, and the projections on the first plane intersect at a point, and the at least two support arms are connected to each other; each support arm is provided with a sensor fixing position for connecting with the sensor; Wherein, the support arm is constructed as a retractable structure.

2. The sensor positioning bracket according to claim 1, characterized in that: The support arm includes a main body, a locking portion, and a telescopic portion connected to at least one end of the main body; A sliding channel is provided in the main body at a position corresponding to the telescopic part, and the telescopic part is at least partially located in the corresponding sliding channel and can slide along the sliding channel relative to the main body; The locking parts correspond to the telescopic parts one by one, and are used to relatively fix a corresponding group of the telescopic parts and the sliding channel.

3. The sensor positioning bracket according to claim 2, characterized in that: The main body and the telescopic part are both configured as rod-shaped structures; The locking portion penetrates from the outer side of the main body into the sliding channel and is pressed against a portion of the telescopic portion located in the sliding channel.

4. The sensor positioning bracket according to claim 3, characterized in that: Both ends of the main body in the length direction are provided with telescopic parts.

5. The sensor positioning bracket according to claim 1, characterized in that: The sensor positioning bracket also includes a central axis, and the central axis passes through and is connected to the intersection of the at least two support arms, so that the at least two support arms are rotatably connected to the central axis.

6. The sensor positioning bracket according to claim 5, characterized in that: A mounting hole is provided at a position corresponding to the intersection position on each of the support arms, and the support arms are stacked on each other, and the mounting holes of each of the support arms are coaxial, and the central axis passes through each of the mounting holes in sequence.

7. The sensor positioning bracket according to claim 6, characterized in that: Flanges are provided at both ends of the central axis, and projections of the flanges on the first plane cover projections of the mounting holes on the first plane.

8. A salt spray test chamber, characterized in that: It comprises a box body and at least one sensor positioning bracket according to any one of claims 1 to 7; the box body has a working chamber; The end of each supporting arm abuts against the inner wall of the working chamber.

9. The salt spray test chamber according to claim 8, characterized in that: The number of the sensor positioning brackets is two, and the two sensor positioning brackets are staggered with each other in the height direction of the working chamber.

10. The salt spray test chamber according to claim 8, characterized in that: The outer contour of the cross section of the working chamber along the height direction is a polygon; Two ends of at least part of the support arms abut against oppositely disposed corners of the polygon.

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