Detection tool for swash plate compressor
Patent Information
- Application Number
- CN202522389814.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-11
- Publication Date
- 2026-09-22
- Estimated Expiration
- 2035-11-11
AI Technical Summary
[0005]本实用新型的目的在于提供斜盘压缩机用检测工装，以解决上述背景技术提出的目前斜盘压缩机前盖内部电控阀安装槽与旁通通道的相对位置精度缺乏有效检测手段，导致依赖装配后密封测试，造成返工率高、成本增加和生产效率降低的问题
[0012]与现有技术相比，本实用新型的有益效果是：该斜盘压缩机用检测工装，通过第一检测组件与第二检测组件的精准配合，实现了对电控阀安装槽及旁通通道加工位置的快速、直接检测，有效替代了原有依赖密封测试的间接验证方式，提升了检测效率与产品质量，其具体内容如下：
Smart Images
Figure CN224785907U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of compressor assembly and testing technology, specifically to testing fixtures for swashplate compressors. Background Technology
[0002] As a core component of automotive air conditioning systems, the performance, reliability, and sealing of swashplate compressors directly affect the comfort and safety of the entire vehicle. Swashplate compressors have a complex structure and high precision. Their front cover typically has an electronically controlled valve mounting slot and a bypass channel connected to it. The electronically controlled valve adjusts the compressor's displacement by precisely controlling the opening and closing of the bypass channel, thereby achieving continuous regulation of the cooling capacity. Therefore, the depth, flatness, and relative positional accuracy between the electronically controlled valve mounting slot and the bypass channel are key geometric features to ensure the normal installation, sealing, and functional realization of the electronically controlled valve.
[0003] In the structural design of swashplate compressors, an electronically controlled valve mounting groove is formed inside the front cover. A bypass channel communicating with this groove is also provided on the front cover. This bypass channel needs to precisely match the electronically controlled valve installed in the groove to ensure sealing performance, which directly affects the normal operation of the compressor. However, due to the considerable length of the bypass channel and the electronically controlled valve mounting groove, there is a lack of direct and effective means to test their relative positional accuracy. Current technology typically only verifies this through a sealing test after compressor assembly. If the test fails, rework is required, which not only increases testing costs but also significantly impacts production efficiency due to the cumbersome and time-consuming rework process.
[0004] Therefore, a testing fixture for swashplate compressors is proposed to address the problems mentioned above. Utility Model Content
[0005] The purpose of this invention is to provide a testing fixture for swashplate compressors, in order to solve the problem mentioned in the background art that the relative positional accuracy of the electric control valve mounting groove and bypass channel inside the front cover of the current swashplate compressor lacks an effective testing method, which leads to reliance on post-assembly sealing tests, resulting in high rework rates, increased costs, and reduced production efficiency.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a testing fixture for a swashplate compressor, the swashplate compressor including a front cover and an electronically controlled valve mounting groove formed within the front cover, the front cover having a bypass channel communicating with the electronically controlled valve mounting groove, the testing fixture including: The first detection component is configured to be inserted into the mounting slot of the electric valve and abut against the first mounting surface in the mounting slot of the electric valve. The first detection component has a slot on the side facing the bypass channel. The second detection component is configured to pass through the bypass channel and extend at least partially into the slot; Wherein, the width of the notch is not greater than the diameter of the bypass channel.
[0007] Preferably, the first detection assembly comprises at least a partial columnar structure, and the outer contour of the columnar structure is adapted to the shape of the inner wall of the electric control valve installation groove, so that radial positioning is realized after the first detection assembly is inserted into the electric control valve installation groove.
[0008] Preferably, the electric control valve installation groove is provided with a first installation surface, a second installation surface and a third installation surface sequentially from the outside to the inside, and the first detection assembly abuts against the first installation surface to realize axial positioning.
[0009] Preferably, the second detection assembly comprises a rod-shaped structure at least partially extending into the bypass channel and the notch at the same time, and the outer diameter of the rod-shaped structure is in clearance fit with the inner diameter of the bypass channel.
[0010] Preferably, the width of the notch is equal to the diameter of the bypass channel.
[0011] Preferably, a marking part is arranged on the rod body of the second detection assembly, and the marking part is a protruding retaining ring or a scale line surrounding the second detection assembly.
[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows: the detection tool for a swash plate compressor realizes rapid and direct detection of the processing positions of the electric control valve installation groove and the bypass channel through the precise cooperation of the first detection component and the second detection component, effectively replaces the original indirect verification method relying on sealing test, improves detection efficiency and product quality, and the specific content is as follows: Through the precise cooperation of the first detection component and the second detection component, it effectively solves the problems in the prior art that the long lengths of the bypass channel and the electric control valve installation groove make direct detection impossible, and only can rely on sealing test for verification, which leads to long rework process after unqualified products. After the first detection component is inserted into the electric control valve installation groove, axial positioning is realized by abutting against the first installation surface, and radial positioning is realized by adapting the outer contour of the columnar structure to the inner wall of the groove, providing a stable reference for detection; the notch on the side facing the bypass channel cooperates with the second detection component that can pass through the bypass channel, and the width of the notch is not greater than the diameter of the bypass channel. By observing whether the mark on the second detection component is inside the bypass channel, it can be directly determined whether the processing position of the bypass channel is qualified, without relying on subsequent sealing tests. The tool is not only convenient and efficient in detection, shortens the detection cycle, but also can find and correct processing deviations in time, avoids the increase of rework cost caused by unqualified products flowing into subsequent processes, and improves production efficiency and product quality stability. Description of Drawings
[0013] Figure 1 is a schematic diagram of the external structure of the front cover in the present utility model; Figure 2 This is a schematic diagram of the internal structure of the front cover in this utility model; Figure 3 This utility model Figure 2 A schematic diagram of a partial cross-sectional structure; Figure 4 This is a schematic diagram of the working state of the detection tooling in this utility model; Figure 5 This is a three-dimensional structural diagram of the first detection component in this utility model.
[0014] In the diagram: 1. Front cover; 2. Electric valve mounting slot; 201. First mounting surface; 202. Second mounting surface; 203. Third mounting surface; 3. Bypass channel; 4. First detection component; 401. Groove; 5. Second detection component; 501. Marking. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example
[0016] like Figure 1-5 As shown, the testing fixture for a swashplate compressor provided by this utility model mainly consists of a first testing component 4 and a second testing component 5, which work together to test the positional accuracy of the bypass channel 3. The first testing component 4 serves as a positioning reference, used to insert into the electric control valve mounting groove 2 for axial and radial positioning; the second testing component 5 serves as a testing actuator, used to pass through the bypass channel 3 and cooperate with a specific structure on the first testing component 4 to determine whether the position of the bypass channel 3 is qualified. This split-type structural design ensures testing accuracy while facilitating assembly and disassembly during operation.
[0017] like Figure 4-5 As shown, part of the first detection component 4 adopts a columnar structure design, and its overall outline is perfectly adapted to the inner wall shape of the solenoid valve mounting groove 2. This adaptation design ensures that after the first detection component 4 is inserted into the solenoid valve mounting groove 2, its outer wall fits tightly against the inner wall of the solenoid valve mounting groove 2, thereby achieving reliable radial positioning and avoiding detection errors caused by radial wobbling of the first detection component 4 during the detection process.
[0018] like Figure 3As shown, the solenoid valve mounting groove 2 is provided with a first mounting surface 201, a second mounting surface 202, and a third mounting surface 203 sequentially from the outside to the inside (i.e., from the groove opening to the bottom of the groove). These three mounting surfaces are all axial positioning surfaces, used to cooperate with different mounting parts of the solenoid valve. In this embodiment, the axial length of the first detection component 4 is precisely designed. When it is inserted into the solenoid valve mounting groove 2 to a preset depth, its end will tightly abut against the first mounting surface 201. This abutment relationship achieves the axial positioning of the first detection component 4. The dual positioning of axial and radial directions ensures that the position of the first detection component 4 is fixed during the detection process, providing a stable reference for subsequent detection.
[0019] On the side of the first detection component 4 facing the bypass channel 3, a slot 401 extending perpendicularly to the axis of the bypass channel 3 is provided. The location of the slot 401 corresponds to the designed position of the bypass channel 3—the axis of the slot 401 should theoretically be perpendicular to the axis of the bypass channel 3 after the first detection component 4 is positioned. To ensure detection accuracy, the width of the slot 401 is strictly controlled to be no greater than the diameter of the bypass channel 3. Preferably, the width of the slot 401 is equal to the diameter of the bypass channel 3, which maximizes detection accuracy and avoids misjudgment caused by an excessively wide slot 401.
[0020] The second detection component 5, serving as the detection actuator, partially adopts a rod-like structure design. It is a cylindrical rod with its outer diameter and the inner diameter of the bypass channel 3 fitted with a clearance (the clearance is controlled within the range of 0.01-0.03 mm). This ensures that the second detection component 5 can smoothly pass through the bypass channel 3 while avoiding detection errors caused by excessive clearance. To enable intuitive judgment of detection results, a marking section 501 is provided on the rod of the second detection component 5. In this embodiment, the marking section 501 is a raised retaining ring surrounding the rod. The outer diameter of this raised retaining ring is slightly smaller than the inner diameter of the bypass channel 3 (ensuring it does not affect the rod's insertion), and the color of the raised retaining ring is a striking color different from the main body of the rod (e.g., the rod is silver-white, and the retaining ring is red) to facilitate quick identification by the inspection personnel.
[0021] The positioning of the marking section 501 is precisely calculated: when the bypass channel 3 and the solenoid valve mounting slot 2 are in the correct relative position, after the second detection component 5 passes through the bypass channel 3 and extends into the slot 401, the marking section 501 is exactly located inside the bypass channel 3, and cannot be observed from the port of the bypass channel 3; when the position of the bypass channel 3 is offset, causing a misalignment between it and the slot 401, the length of the second detection component 5 extending into the slot 401 is insufficient. In this case, the marking section 501 will be partially or completely exposed outside the port of the bypass channel 3. The inspector can directly determine whether the product is qualified by observing whether the marking section 501 is exposed. In other optional embodiments, the marking section 501 can also adopt a scale line design. Quantitative detection can be achieved by comparing the value of the scale line extending into the bypass channel 3 with the standard value.
[0022] Working principle: Before using the testing fixture for this swashplate compressor, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 5 As shown, firstly, the first detection component 4 is slowly inserted along the axial direction of the electric valve mounting groove 2 until the outer stepped surface of the first detection component 4 is in close contact with the first mounting surface 201 of the electric valve mounting groove 2. At this time, the first detection component 4 completes axial and radial positioning, and the position of its groove 401 corresponds exactly to the inner port (theoretical design position) of the bypass channel 3.
[0023] Then, holding one end of the second detection component 5, slowly insert the other end along the axis of the bypass channel 3, keeping the rod coaxial with the channel axis during insertion to avoid jamming or detection errors caused by tilting. Continue pushing the second detection component 5 until its inserted end abuts against the bottom of the slot 401 (or feel slight resistance, indicating that the maximum insertion depth has been reached).
[0024] Observe the position of the marking part 501 on the second detection component 5: If the marking part 501 is completely inside the bypass channel 3, and the protruding retaining ring cannot be seen from the inlet end of the bypass channel 3 (or the scale line shows that the insertion length reaches the standard value), then it is determined that the relative position of the bypass channel 3 of the swashplate compressor front cover and the electric control valve mounting groove 2 is qualified and meets the assembly requirements. If the marking part 501 is partially or completely exposed outside the port of the bypass channel 3, it indicates that the second detection component 5 has not reached the standard insertion depth, and there is a positional deviation between the bypass channel 3 and the electric control valve mounting groove 2. The product is deemed unqualified and needs to be returned to the processing process to adjust the processing position of the bypass channel 3.
[0025] After the test is completed, first pull out the second test component 5 in the opposite direction, then take out the first test component 4 from the electric control valve mounting slot 2, clean the impurities on the surface of the two test components, and place them on a special tooling rack for the next use.
[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A testing fixture for a swashplate compressor, the swashplate compressor comprising a front cover (1) and an electronically controlled valve mounting groove (2) formed within the front cover (1), wherein the front cover (1) has a bypass channel (3) communicating with the electronically controlled valve mounting groove (2), characterized in that, The testing fixture includes: The first detection component (4) is configured to be inserted into the electric valve mounting slot (2) and abut against the first mounting surface (201) in the electric valve mounting slot (2). The first detection component (4) has a slot (401) on the side facing the bypass channel (3). The second detection component (5) is configured to pass through the bypass channel (3) and extend at least partially into the slot (401); The width of the slot (401) is not greater than the diameter of the bypass channel (3).
2. The testing fixture for a swashplate compressor according to claim 1, characterized in that: The first detection component (4) includes at least a partial columnar structure, the outer contour of which is adapted to the inner wall shape of the electric valve mounting groove (2) so that the first detection component (4) is radially positioned after being inserted into the electric valve mounting groove (2).
3. The testing fixture for a swashplate compressor according to claim 2, characterized in that: The electric valve mounting groove (2) is provided with a first mounting surface (201), a second mounting surface (202) and a third mounting surface (203) from the outside to the inside. The first detection component (4) abuts against the first mounting surface (201) to achieve axial positioning.
4. The testing fixture for a swashplate compressor according to claim 1, characterized in that: The second detection component (5) includes a rod-shaped structure that extends at least partially into the bypass channel (3) and the slot (401) simultaneously, the outer diameter of the rod-shaped structure being clearance-fitted with the inner diameter of the bypass channel (3).
5. The testing fixture for a swashplate compressor according to claim 1, characterized in that: The width of the slot (401) is equal to the diameter of the bypass channel (3).
6. The testing fixture for a swashplate compressor according to claim 1, characterized in that: The second detection component (5) has a marking part (501) on its rod body. The marking part (501) is a raised retaining ring or scale line surrounding the second detection component (5).