A gap gauge

Abstract

The utility model belongs to compressor manufacturing technical field discloses a kind of gap gauge.Including gap gauge body and several gap pieces, gap gauge body one end is formed with disc, gap piece is fixed around the side of disc, cap is connected with cap on disc, gap gauge body other end is formed with barrel, cap is connected on the outside of disc from barrel top, installation slot is arranged on the outer wall of barrel, clamping portion is arranged in installation slot, and clamping portion is pressed on the upside of cap;Solve the problem that screw on cap under prior art is easy to fall off, leading to the abnormal operation of compressor.

Description

Technical Field

[0001] This utility model relates to the field of compressor manufacturing technology, and in particular to a clearance gauge. Background Technology

[0002] The clearance gauge inside the compressor is a precision machining tool. Its main function is to control the assembly clearance between key moving parts inside the compressor, ensuring that the clearance between the stator and rotor remains consistent during the assembly process.

[0003] The gap gauge usually has a gap plate installed on its body, and a cap is attached to the outer edge of the gap plate. The cap is usually installed on the gap gauge body by a screw. During the compressor assembly process, the gap gauge needs to be repeatedly removed and placed, which can cause the screw on the cap to fall off and into the compressor, resulting in abnormal compressor operation and tripping. Utility Model Content

[0004] The purpose of this utility model is to provide a clearance gauge to solve the problem that the screws on the cap are easy to fall off in the prior art, which leads to abnormal operation of the compressor.

[0005] To achieve this objective, the present invention adopts the following technical solution: The present invention provides a gap gauge body and a plurality of gap plates. One end of the gap gauge body is formed with a disc, and the gap plates are fixed around the side of the disc. A cap is attached to the disc. The other end of the gap gauge body is formed with a cylinder. The cap is inserted into the cylinder from above and attached to the outside of the disc. An installation groove is provided on the outer wall of the cylinder, and a snap-fit ​​part is provided in the installation groove. The snap-fit ​​part is pressed against the upper side of the cap.

[0006] Preferably, the snap-fit ​​part is a snap ring, which is fixed in the mounting groove.

[0007] Preferably, the retaining ring is O-shaped, with a notch on the retaining ring, and caliper holes are provided on the retaining ring on both sides of the notch.

[0008] Preferably, the height of the mounting groove is X, and the axial thickness of the retaining ring is Y, 0 mm. <X-Y≤0.3mm 。

[0009] Preferably, the height of the mounting groove is 1.4 mm and the thickness of the retaining ring is 1.1 mm.

[0010] Preferably, the distance between the lower edge of the mounting groove and the upper surface of the disk is the same as the thickness of the cap.

[0011] Preferably, a gap is formed between the cap and the cylinder.

[0012] Preferably, the width of the retaining ring is A, and the sum of the width of the mounting groove and the gap between the cap cylinder and the retaining ring is B, where A > B.

[0013] Preferably, the retaining ring is made of metal.

[0014] Preferably, the stiffness of the retaining spring is lower than that of the cap.

[0015] Beneficial effects: A snap-fit ​​part is provided in the mounting groove on the gap gauge body. The snap-fit ​​part is pressed against the cap to fix the gap gauge, thereby reducing the number of bolts, reducing the probability of bolts falling off, and reducing the failure rate of the compressor. Attached Figure Description

[0016] Figure 1 This is a drawing of the main body of the gap gauge of this utility model;

[0017] Figure 2 This is an exploded view of the gap gauge of this utility model.

[0018] In the diagram: 1. Gap gauge body; 11. Disc; 12. Cylinder; 13. First screw hole; 14. Mounting groove; 2. Cap; 3. Gap piece; 4. Bolt; 5. Snap ring. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0020] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not 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 this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0023] In the current technology, bolts are usually used to fix the cap. However, during the repeated removal and placement of the gap gauge, the bolts are prone to falling off. If the fallen bolts enter the compressor, the compressor will not work properly.

[0024] To solve the above problems, such as Figures 1 to 2 As shown, this utility model provides a gap gauge, including a gap gauge body 1 and several gap pieces 3. One end of the gap gauge body 1 is formed with a disc 11, and the gap pieces 3 are fixed around the side of the disc 11. A cap 2 is attached to the disc 11. The other end of the gap gauge body 1 is formed with a cylinder 12. The cap 2 is inserted from above the cylinder 12 and attached to the outside of the disc 11. An installation groove 14 is provided on the outer wall of the cylinder 12. A snap-fit ​​part is provided in the installation groove 14 and is pressed against the upper side of the cap 2.

[0025] An installation groove 14 is provided on the upper side of the gap gauge body 1, so that a snap-fit ​​part can be installed in the installation groove 14. The snap-fit ​​part is pressed against the upper side of the cap 2 to fix the cap 2, so that the cap 2 can be freed from the form of bolt 4 fixation, reducing the number of screws in the gap gauge and preventing the bolt 4 from falling off. The snap ring 5 is large in size and will not fall into the compressor, so that the compressor can maintain a normal working state for a long time.

[0026] Typically, a first screw hole 13 is provided on the side of the disc 11 of the gauge body 1. A bolt 4 is screwed into the first screw hole 13. The bolt 4 passes through the gap piece 3 and fixes the gap piece 3 to the side of the disc 11, thereby achieving detachable fixing of the gap piece 3.

[0027] The clamping portion of the present utility model is a circlip 5, the circlip 5 is fixed in the mounting groove 14, the circlip 5 is a standard part that can be directly procured without secondary processing, which can reduce the modification cost. In the process of improving the feeler gauge, the improvement can be realized only by forming the mounting groove 14 on the feeler gauge body 1, which reduces the improvement cost.

[0028] The circlip 5 is O-shaped, a notch is provided on the circlip 5, and plier holes are formed on the circlip 5 on both sides of the notch. By providing the plier holes, the installation difficulty of the circlip 5 can be reduced. The tips of a plier are inserted into the plier holes, the circlip 5 is pried to deform and sleeved into the mounting groove 14, so as to realize the final installation of the circlip 5.

[0029] The height of the mounting groove 14 is X, the axial thickness of the circlip 5 is Y, and 0mm<X-Y≤0.3mm. By making the height of the mounting groove 14 slightly larger than the circlip 5, it is convenient for the circlip 5 to be installed in the mounting groove 14, the insertion difficulty for installing the circlip 5 is reduced, and the installation difficulty can be lowered.

[0030] The height of the mounting groove 14 is designed to be slightly larger than the thickness of the circlip 5, and the above structural optimization brings multiple positive effects: Firstly, it provides sufficient space for the installation of the circlip 5, significantly reduces the insertion difficulty of embedding the circlip 5 into the groove, and improves the assembly efficiency. More importantly, this slight redundant space allows the circlip 5 to have a small movable margin in the mounting groove 14, so that it can undergo elastic deformation more smoothly when pressed by the cap 2 instead of being rigidly locked, which also reduces the wear on the circlip 5 and the groove wall, and improves the durability and stability of the structure. Finally, this design fundamentally eliminates the risk of screw falling off, ensures the high efficiency and absolute safety of the compressor assembly process, and guarantees the working reliability of the final product.

[0031] Generally, the most suitable height of the mounting groove 14 is 1.4mm, and the thickness of the circlip 5 is 1.1mm. The circlip 5 of the above specification is easy to procure and can reduce the cost, and the height of 1.4mm also facilitates the processing of the mounting groove 14 and reduces the processing difficulty.

[0032] After a large number of practical verifications and mechanical analyses, setting the depth of the mounting groove 14 to 1.4mm and matching it with the circlip 5 with a standard thickness of 1.1mm is a balanced design that achieves reliability, ease of use and economy.

[0033] Firstly, it ensures that the retaining ring 5 can be easily and smoothly inserted into the mounting slot 14, significantly reducing the difficulty of insertion during assembly and improving production efficiency. This gap provides just the right amount of space for the elastic deformation of the retaining ring 5. When the snap flange of the cap 2 is pressed down, the retaining ring 5 can contract evenly and move into the slot. After it is fully engaged, it can fully rebound with its own elasticity, producing a clear and reliable locking feeling, avoiding installation difficulties caused by too small a gap or shaking and abnormal noise caused by too large a gap.

[0034] From a manufacturing and supply chain perspective, the 1.1mm thick retaining ring 5 is a standard specification in the industry, with ample market supply and convenient procurement, eliminating the need for customization. This directly reduces the procurement cost of core components. Meanwhile, the 1.4mm deep mounting groove 14 is also a conventional and easily achievable size during machining. Whether using milling or turning processes, machining accuracy and consistency can be easily guaranteed, effectively controlling machining difficulty and production costs.

[0035] The distance between the lower edge of the mounting groove 14 and the upper surface of the disc 11 is the same as the thickness of the cap 2. This allows the retaining spring 5 to abut against the cap 2 after installation, enabling the retaining spring 5 to press against the cap 2 and ensuring that the cap 2 remains stable during compressor operation and does not come off.

[0036] A gap is formed between the cap 2 and the cylinder 12, which makes it easier for the cap 2 to fit inside the cylinder 12 and reduces the difficulty of installation.

[0037] The width of the retaining ring 5 is A, and the sum of the width of the mounting groove 14 and the gap between the cap 2 cylinder 12 is B, where A > B. This allows the retaining ring 5 to have enough area to press against the cap 2, preventing the cap 2 from coming off and ensuring that the cap 2 is always in the working position.

[0038] The retaining ring 5 is made of metal, which has a certain deformation capacity. During the installation and removal of the retaining ring 5, it can be installed in the retaining groove through deformation. At the same time, the hardness of the retaining ring 5 is lower than that of the cap 2 and the gap body, which can avoid scratching the gap gauge.

[0039] The retaining ring 5 is preferably made of a metal material with excellent mechanical properties, such as spring steel or stainless steel. While ensuring sufficient structural strength, the metal material has ideal elastic deformation capability. During installation and disassembly, the retaining ring 5 can easily slide into or out of the mounting groove 14 through controllable and reversible elastic deformation, realizing quick and repeated disassembly and assembly of the cap 2 without causing plastic damage or permanent fatigue, which greatly improves the convenience of maintenance operations and the durability of the tool.

[0040] Furthermore, the overall hardness of the snap ring 5 in this invention is intentionally set to be lower than that of the cap 2 and the gauge body (usually made of high-hardness tool steel or alloy). This "hardness difference" design is a key protective measure. During repeated engagement and disengagement cycles, the relatively soft snap ring 5 becomes a "sacrificial" component, undergoing slight wear. This effectively prevents scratches or wear on the precision mating surfaces of the harder gauge body and cap 2, maintaining the smoothness and accuracy of the gauge's critical measurement reference surfaces over a long period. It also fundamentally eliminates measurement errors caused by scratches on the tool body, ensuring the long-term reliability of measurement results.

[0041] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A gap gauge, characterized in that, The device includes a gauge body (1) and several gap plates (3). One end of the gauge body (1) is formed with a disc (11). The gap plates (3) are fixed around the side of the disc (11). A cap (2) is attached to the disc (11). The other end of the gauge body (1) is formed with a cylinder (12). The cap (2) is inserted from above the cylinder (12) and attached to the outside of the disc (11). An installation groove (14) is provided on the outer wall of the cylinder (12). A snap-fit ​​part is provided in the installation groove (14). The snap-fit ​​part is pressed against the upper side of the cap (2).

2. The gap gauge according to claim 1, characterized in that, The snap-fit ​​part is a snap ring (5), which is fixed in the mounting groove (14).

3. The gap gauge according to claim 2, characterized in that, The retaining ring (5) is O-shaped, and a notch is provided on the retaining ring (5). Clamping holes are provided on the retaining ring (5) on both sides of the notch.

4. The gap gauge according to claim 2, characterized in that, The height of the mounting groove (14) is X, and the axial thickness of the retaining ring (5) is Y, 0 mm. <X-Y≤0.3mm 。 5. The gap gauge according to claim 4, characterized in that, The height of the mounting groove (14) is 1.4 mm, and the thickness of the retaining ring (5) is 1.1 mm.

6. The gap gauge according to claim 2, characterized in that, The distance between the lower edge of the mounting groove (14) and the upper surface of the disk (11) is the same as the thickness of the cap (2).

7. The clearance gauge according to claim 2, characterized in that, A gap is formed between the cap (2) and the cylinder (12).

8. The clearance gauge according to claim 7, characterized in that, The width of the snap ring (5) is A, and the sum of the width of the mounting groove (14) and the gap between the cap (2) cylinder (12) is B, where A > B.

9. The gap gauge according to claim 2, characterized in that, The retaining ring (5) is made of metal.

10. The gap gauge according to claim 2, characterized in that, The stiffness of the retaining ring (5) is lower than that of the cap (2).

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