Automobile air conditioner box left shell deformation detection tool
By designing a deformation detection fixture for the left shell of an automotive air conditioning unit, and utilizing limit posts and detection line groups to quickly identify deformation, the problem of low efficiency in air conditioning unit shell deformation detection was solved, achieving efficient and low-cost detection results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING QIANWEI HONGHUA TECH CO LTD
- Filing Date
- 2025-09-25
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, the plastic housing of automotive air conditioning units is prone to deformation after production, resulting in low testing efficiency, high precision requirements, complex operation, long testing cycle, and reliance on highly skilled operators.
A deformation detection fixture for the left shell of an automotive air conditioning unit was designed, comprising a main fixture board, a limiting post, a fixture platform, and a detection line group. The fixture is positioned by the limiting post and the damper hole, and the deformation is quickly identified by the detection line group. The skew line group indicates the direction and amount of deformation, reducing the difficulty of detection.
It enables rapid and intuitive deformation detection, improves detection efficiency, reduces detection costs, simplifies the operation process, and reduces reliance on operator skills.
Smart Images

Figure CN224534991U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts processing technology, and in particular to a tooling for detecting deformation of the left housing of an automotive air conditioning unit. Background Technology
[0002] As people's living standards improve, the number of cars owned is increasing, and car sales are also growing. Consequently, car production is also increasing. The air conditioning unit is an essential component of every car, so the production efficiency of the air conditioning unit also needs to be improved accordingly.
[0003] Because air conditioning units have plastic shells, they are prone to deformation after production. Therefore, it is necessary to inspect the plastic shells. Currently, deformation is checked using coordinate measuring machines (CMMs) and projectors. However, this inspection method has a long cycle, requires high precision, and operators must be proficient in using CMMs and projectors. It places high demands on the skills of the inspectors, consumes a lot of time in judging the products, and has very low inspection efficiency.
[0004] To address the aforementioned issues, this utility model document proposes a tooling for detecting deformation of the left housing of an automotive air conditioning unit. Utility Model Content
[0005] This utility model provides a tooling for detecting deformation of the left shell of an automotive air conditioning unit, which can quickly and effectively identify product deformation, reduce detection costs, and improve detection efficiency.
[0006] This utility model provides the following technical solution:
[0007] A tooling for detecting deformation of the left housing of an automotive air conditioning unit includes a main fixture board, on which a limiting post is provided for positioning the left housing of the air conditioning unit to be tested, the limiting post corresponding to the vent hole on the left housing of the air conditioning unit; the main fixture board also includes a fixture platform and a support post, the support post having a fixture sub-plate; the main fixture board, fixture platform, and fixture sub-plate are all provided with a set of detection lines corresponding to the edge contour of the left housing of the air conditioning unit to be tested.
[0008] Furthermore, the detection line group includes a qualified line and a skew line group located on both sides of the qualified line, with the skew line group and the qualified line group spaced 1 mm apart.
[0009] Furthermore, the slant line group is composed of multiple slant line units, and the interval between two adjacent slant line units is 1mm.
[0010] Furthermore, the main board of the inspection fixture has weight reduction holes.
[0011] Furthermore, the lower surface of the inspection fixture motherboard is uniformly provided with multiple pads.
[0012] Furthermore, the main board of the inspection fixture has a positioning hole, one end of the limiting post is inserted into the positioning hole, and the end face of the limiting post has a threaded hole. The bottom surface of the positioning hole has a through hole, and a positioning bolt is provided in the through hole. The positioning bolt cooperates with the threaded hole to fix the limiting post.
[0013] Furthermore, the main board of the fixture has a first locking hole, the secondary board of the fixture has a second locking hole, one end of the support column is provided with a first locking block that cooperates with the first locking hole, and the other end is provided with a second locking block that cooperates with the second locking hole.
[0014] In this invention, the left housing of the air conditioner is supported and positioned by a limiting post in conjunction with the vent hole on the left housing of the air conditioner to be tested. The left housing of the air conditioner is then placed into the testing line group, which allows for a direct view of whether the left housing of the air conditioner is deformed and the amount of deformation, thus reducing the difficulty of testing and improving the efficiency of testing. Attached Figure Description
[0015] Figure 1 A top view of a deformation detection fixture for the left housing of an automotive air conditioning unit provided in this embodiment of the present invention;
[0016] Figure 2 This is a schematic diagram of the main structure of a deformation detection fixture for the left housing of an automotive air conditioning unit provided in an embodiment of the present invention;
[0017] Figure 3 A cross-sectional view of the main board of the inspection fixture in a deformation detection tooling for the left housing of an automotive air conditioning unit provided in this embodiment of the present invention;
[0018] Figure 4 A cross-sectional view of a limiting post in a deformation detection fixture for the left shell of an automotive air conditioning unit provided in this embodiment of the present invention;
[0019] Figure 5 A schematic diagram of the top view of a tooling for detecting deformation of the left housing of an automotive air conditioning unit, after placing the left housing of the air conditioning unit to be tested on it, provided in an embodiment of this utility model.
[0020] Figure 6 for Figure 5 AA section view;
[0021] Figure 7 for Figure 5 Enlarged view of part I.
[0022] Figure label:
[0023] 1. Main plate of the fixture; 101. Positioning hole; 102. Through hole; 103. Positioning bolt; 104. First locking hole; 2. Sub-plate of the fixture; 201. Second locking hole; 3. Fixture platform; 4. Inspection line group; 401. Qualified line; 402. Skew line unit; 5. Weight reduction hole; 6. Limiting post; 601. Threaded hole; 7. Support post; 701. First locking block; 702. Second locking block; 8. Pad foot. Detailed Implementation
[0024] The embodiments of the present invention will now be described with reference to the accompanying drawings.
[0025] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.
[0026] In this embodiment of the invention, the terms “" 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 indicated technical features. Therefore, a feature defined with “" and “second” may explicitly or implicitly include one or more of that feature.
[0027] In this embodiment of the utility model, "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.
[0028] References to "one embodiment" or "some embodiments" as used in this specification mean that one or more embodiments of the present invention include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.
[0029] Example:
[0030] Reference Figures 1-7 As shown, a deformation detection fixture for the left housing of an automotive air conditioning unit includes a main fixture 1. The main fixture 1 is provided with a limiting post 6 for positioning the left housing of the air conditioning unit to be tested, and the limiting post 6 corresponds to the vent hole on the left housing of the air conditioning unit. The main fixture 1 is also provided with a fixture platform 3 and a support post 7. The support post 7 is provided with a fixture sub-plate 2. The main fixture 1, the fixture platform 3 and the fixture sub-plate 2 are all provided with a detection line group 4 corresponding to the edge contour of the left housing of the air conditioning unit to be tested.
[0031] The left housing of the air conditioner is supported and positioned by the limiting post 6 in conjunction with the vent hole on the left housing of the air conditioner to be tested. The left housing of the air conditioner is positioned on the main plate 1 and the auxiliary plate 2 of the inspection fixture by the limiting post 6. The edge contour of the left housing of the air conditioner corresponds to the detection line group 4, and the deformation and amount of deformation of the left housing of the air conditioner can be directly observed through the detection line group 4.
[0032] The test line group 4 includes a pass line 401 and a skew line group located on both sides of the pass line 401, with a 1mm interval between the skew line group and the pass line 401.
[0033] When the left housing of the air conditioner to be inspected is positioned on the main plate 1 and the auxiliary plate 2 of the inspection fixture, if the outline of the housing edge of the left housing corresponds to the qualified line 401, it means that the product is qualified and has no deformation. If the outline of the housing edge deviates from the qualified line 401, it means that the product is deformed and unqualified. At the same time, the direction of product deformation can be seen through the skew line group, so as to facilitate the correction.
[0034] The skew line group consists of multiple skew line units 402, with a 1mm interval between two adjacent skew line units 402.
[0035] The multiple skew line units 402 facilitate observation of the product's deformation amount and determine whether the product's deformation amount is within the repair range. If the product does not meet the repair conditions, it can be directly scrapped without workers wasting time on repair. If it meets the repair conditions, it further facilitates workers to repair the deformed product.
[0036] The main board 1 of the inspection fixture has a weight reduction hole 5.
[0037] The weight of the inspection fixture is reduced by setting the weight reduction hole 5, making it easier for workers to move.
[0038] The lower surface of the main board 1 of the inspection fixture is evenly provided with multiple pads 8.
[0039] The testing fixture is supported by foot 8 to ensure that it remains level and prevent it from tilting and affecting the testing results.
[0040] The main board 1 of the inspection fixture has a positioning hole 101. One end of the limiting post 6 is inserted into the positioning hole 101, and the end face of the limiting post 6 has a threaded hole 601. The bottom surface of the positioning hole 101 has a through hole 102, and a positioning bolt 103 is provided in the through hole 102. The positioning bolt 103 cooperates with the threaded hole 601 to fix the limiting post 6.
[0041] The horizontal position of the limiting post 6 is fixed by the positioning hole 101. When the left housing of the air conditioner to be tested is placed on the main board of the inspection fixture, the position of the limiting post 6 is prevented from changing due to impact, which would affect the positioning effect of the left housing of the air conditioner and thus affect the inspection accuracy. The stability of the limiting post 6 is further improved by the cooperation of the positioning bolt 103 and the threaded hole 601.
[0042] The main board 1 of the fixture has a first locking hole 104, the auxiliary board 2 of the fixture has a second locking hole 201, one end of the support column 7 is provided with a first locking block 701 that cooperates with the first locking hole 104, and the other end is provided with a second locking block 702 that cooperates with the second locking hole 201.
[0043] The first locking block 701 cooperates with the first locking hole 104 to lock one end of the support column 7 onto the main board 1 of the fixture, and the second locking block 702 cooperates with the second locking hole 201 to lock the other end of the support column 7 onto the auxiliary board 2 of the fixture, thereby connecting the main board 1 and the auxiliary board 2 of the fixture through the support column 7.
[0044] In use, the end of the limiting post 6 with the threaded hole 601 is inserted into the positioning hole 101, and then the positioning bolt 103 is passed through the through hole 102 and engaged with the threaded hole 601 to fix the limiting post 6 in the positioning hole 101. The first locking block 701 of the support post 7 is locked in the first locking hole 104 of the main plate of the fixture 1, and the second locking block 702 is locked in the second locking hole 201 of the auxiliary plate of the fixture 2. Then the auxiliary plate of the fixture 2 is installed on the main plate of the fixture 1.
[0045] During testing, the damper hole on the left casing of the air conditioner to be tested is fitted onto the limiting post 6, thereby positioning the left casing on the testing fixture. At this point, the edge contour of the left casing is within the testing line group 4. The worker observes whether the edge contour of the left casing is within the pass line 401. If it is within the pass line 401, the product is qualified. If it is outside the pass line 401, the product is deformed. Then, by observing the deflection line unit 402, the amount of product deformation is determined. If it exceeds the adjustable range, the product can be scrapped directly. If it is within the adjustable range, the worker adjusts the product according to the indication of the deflection line unit 402. The testing line group 4 can quickly and effectively identify whether the product is qualified, greatly shortening the testing cycle, improving testing efficiency, and reducing costs.
[0046] When the limiting post 6 is inserted into the damper hole on the left housing of the air conditioner to be tested, it can be determined whether the diameter of the damper hole is qualified and whether the damper hole is deformed.
[0047] In addition, if there is a gap between the left housing of the air conditioner and the main board 1 or the auxiliary board 2 of the fixture after the left housing of the air conditioner is placed on the testing fixture, and the left housing of the air conditioner is not stable, it can also indicate that the product is deformed.
[0048] In actual production, the testing fixtures are made of aluminum alloy to improve the overall structural strength of the fixtures. At the same time, aluminum alloy is less affected by the environment, ensuring the testing accuracy of the fixtures.
[0049] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. In the absence of conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. Therefore, the protection scope of this utility model should be determined by the scope of the claims.
Claims
1. A tooling for detecting deformation of the left housing of an automotive air conditioning unit, characterized in that, The fixture includes a main board, which has a limiting post for positioning the left housing of the air conditioner to be tested. The limiting post corresponds to the air vent hole on the left housing of the air conditioner. The main board also has a fixture platform and a support post. The support post has a fixture sub-plate. The main board, fixture platform and fixture sub-plate are all equipped with a set of detection lines corresponding to the contour of the left housing of the air conditioner to be tested.
2. The deformation detection fixture for the left housing of an automotive air conditioning unit according to claim 1, characterized in that, The detection line group includes a pass line and a skew line group located on both sides of the pass line, with a 1mm interval between the skew line group and the pass line.
3. The deformation detection fixture for the left housing of an automotive air conditioning unit according to claim 2, characterized in that, The skew line group consists of multiple skew line units, with a 1mm interval between two adjacent skew line units.
4. The deformation detection fixture for the left housing of an automotive air conditioning unit according to claim 1, characterized in that, The main board of the inspection fixture has weight reduction holes.
5. The deformation detection fixture for the left housing of an automotive air conditioning unit according to claim 1, characterized in that, The lower surface of the inspection fixture main board is uniformly provided with multiple pads.
6. The deformation detection fixture for the left housing of an automotive air conditioning unit according to claim 1, characterized in that, The main board of the fixture has a positioning hole. One end of the limiting post is inserted into the positioning hole, and a threaded hole is opened on the end face of the limiting post. The bottom surface of the positioning hole has a through hole, and a positioning bolt is provided in the through hole. The positioning bolt cooperates with the threaded hole to fix the limiting post.
7. The deformation detection fixture for the left housing of an automotive air conditioning unit according to claim 1, characterized in that, The main board of the fixture has a first locking hole, the auxiliary board of the fixture has a second locking hole, one end of the support column is provided with a first locking block that cooperates with the first locking hole, and the other end is provided with a second locking block that cooperates with the second locking hole.