A quick-mounting connector of a driving rotating shaft and a driven synchronous shaft

Abstract

The utility model discloses a kind of quick-mounting connecting pieces of driving rotary shaft and driven synchronous shaft, belong to connecting piece technical field, including pin, seal ring, cover and E-type snap spring;The pin includes shaft body, tail cover and the insertion portion of buckle groove;The seal ring is equipped with the cover installation groove, insertion portion through groove and shaft body abutting groove in intercommunication;The convex part is set in the middle of the cover, and convex part sets pin let -go hole;The E-type snap spring is open ring, and buckle part is set in inside;The cover is placed in cover installation groove, insertion portion passes through shaft body abutting groove, insertion portion through groove and pin let -go hole in sequence, E-type snap spring is clamped between cover and cover installation groove, its through -hole is guided expansion by insertion portion taper surface, buckle part is clamped into groove after completely through and realizes fixedness.This utility model is installed quickly, few parts, using snap spring elasticity automatic clamping, and installation position tolerance is good;Chamfer processing reserve weld, and connection strength is high, and shear capacity is strong;Compact cooperation, impact is small.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, specifically to a quick-connect connector for an active rotating shaft and a driven synchronous shaft. Background Technology

[0002] The existing drive rotary shaft, driven synchronous shaft, and bushing are traditionally connected by inserting bolts into the corresponding mounting holes after installation, placing flat washers at both ends, and tightening the connection with a nut at the tail end. However, there is a gap between the bolt and the mounting hole. If the gap is too large, it will be susceptible to impact loads due to inertia during start-up and shutdown. The bolt root diameter at the thread is smaller than the nominal diameter, which significantly reduces the cross-sectional area at the thread root. During transmission, the bolt bears torque and shear force. During start-up and shutdown, the torque direction changes abruptly, generating significant shear stress at the bolt connection. Therefore, the bolt root is prone to fracture. Utility Model Content

[0003] The purpose of this invention is to provide a quick-connect fitting for the active rotating shaft and the driven synchronous shaft to solve the above problems, facilitate installation, improve shear resistance, reduce impact load during start-up and shutdown, and improve connection strength.

[0004] Technical Solution: This utility model provides a quick-connect fitting for an active rotary shaft and a driven synchronous shaft, comprising: a pin, a sealing ring, a cover, and an E-type snap ring. The pin includes: a shaft body, a tail cover, and an insertion part. The shaft body is cylindrical, with a tail cover and an insertion part at each end. The insertion part has a snap-fit ​​groove. The sealing ring is annular, with a cover mounting groove, an insertion part through groove, and a shaft body abutment groove sequentially connected from the outside to the inside. The cover has a cylindrical protrusion in the middle. A pin clearance hole is provided; the E-type retaining spring is an annular retaining spring with a through hole in the middle and an opening on one side, and a snap-fit ​​part is provided on the inner side of the middle facing the opening; the cover is set in the cover mounting groove, the insertion part passes through the shaft abutment groove and the insertion part through groove, and is inserted into the pin clearance hole, the shaft enters the shaft abutment groove, the E-type retaining spring is set between the cover and the cover mounting groove, the through hole in the middle expands when the insertion part enters, and when the insertion part is completely passed, the snap-fit ​​part engages with the snap-fit ​​groove to fix the pin.

[0005] Furthermore, in the aforementioned quick-connect fitting for an active rotating shaft and a driven synchronous shaft, the insertion part has a tapered guide section on the outside of the snap-fit ​​groove, and a transition section on the inside with a diameter smaller than that of the shaft body and connected to the shaft body. The diameter of the transition section is larger than the bottom diameter of the guide section.

[0006] Furthermore, in the aforementioned quick-connect fitting for an active rotating shaft and a driven synchronous shaft, the inner diameter of the insertion slot is equal to the diameter of the transition section.

[0007] Furthermore, in the aforementioned quick-connect fitting for an active rotating shaft and a driven synchronous shaft, the inner diameter of the shaft abutment groove is equal to the shaft diameter.

[0008] Furthermore, in the aforementioned quick-connect fitting for an active rotating shaft and a driven synchronous shaft, the outer side of the cover mounting groove is a cover area, and the inner side is a protrusion area. The outer ring of the cover area is chamfered, and there is a chamfered transition between the protrusion area and the cover area.

[0009] Furthermore, in the aforementioned quick-connect fitting for the active rotating shaft and the driven synchronous shaft, the outer ring of the cover has a chamfered design.

[0010] Furthermore, in the aforementioned quick-connect fitting for an active rotating shaft and a driven synchronous shaft, the size of the cover area is the same as the size of the cover, the inner diameter of the protrusion area is equal to the diameter of the protrusion of the cover, and the depth of the protrusion area is equal to the length of the protrusion of the cover plus the thickness of the E-type retaining spring.

[0011] Furthermore, in the aforementioned quick-connect fitting for the active rotating shaft and the driven synchronous shaft, the maximum diameter of the E-type retaining ring is smaller than the inner diameter of the convex region. When the E-type retaining ring is in the extreme position of contacting any side within the convex region, its central through hole allows the top of the guide portion to pass through.

[0012] Furthermore, in the aforementioned quick-connect fitting between the active rotating shaft and the driven synchronous shaft, the sealing ring is manufactured using a cold forging process.

[0013] As can be seen from the above technical solution, this utility model has the following beneficial effects: Compared with bolt and nut connections, the quick-connect component for an active rotating shaft and a driven synchronous shaft described in this utility model is easier and faster to install, has fewer parts, and features a tapered design for the inlet section. Utilizing the elastic deformation of an E-type retaining spring, the pin automatically springs back and locks in place after insertion. Furthermore, regardless of the position of the E-type retaining spring in the gap, the top surface of the inlet section can pass through the central through hole, facilitating installation. The chamfered treatment of the sealing ring and cover allows for welding after installation. A portion of the pin's shaft body enters the shaft abutment groove, resisting force during rotation and ensuring the strength of the connection. Compared with bolts, the cross-sectional area of ​​the pin at the point of force application is uniform, resulting in strong shear resistance. The small installation gap ensures a tight fit between the pins, resulting in small relative displacement during start-up and shutdown and low impact load. The sealing ring is manufactured using a cold-forging process, resulting in high material utilization, high precision, and good mechanical properties of the parts. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a quick-connect fitting structure for an active rotating shaft and a driven synchronous shaft according to the present invention.

[0015] Figure 2 This is a schematic diagram of the pin shaft of this utility model;

[0016] Figure 3This is a cross-sectional view of the sealing ring of this utility model;

[0017] Figure 4 This is a schematic diagram of the cap of this utility model;

[0018] Figure 5 This is a schematic diagram of the E-type snap ring of this utility model;

[0019] Figure 6 This is a cross-sectional view of the quick-installation connector of this utility model.

[0020] In the figure: 1. Pin, 2. Sealing ring, 3. Cover, 4. E-type snap ring, 11. Shaft, 12. Tail cover, 13. Insertion part, 131. Snap groove, 132. Inlet part, 133. Transition part, 21. Cover mounting groove, 22. Insertion part through groove, 23. Shaft abutment groove, 31. Pin clearance hole, 41. Detailed Implementation

[0021] Example: Figure 1-5 The quick-connector for a driving rotary shaft and a driven synchronous shaft, as shown, includes: a pin 1, a sealing ring 2, a cover 3, and an E-type snap ring 4. The pin 1 includes: a shaft body 11, a tail cover 12, and an insertion part 13. The shaft body 11 is cylindrical, with the tail cover 12 and the insertion part 13 respectively provided at both ends. The insertion part 13 is provided with a snap-fit ​​groove 131. The sealing ring 2 is annular, with a cover mounting groove 21, an insertion part through groove 22, and a shaft abutment groove 23 sequentially connected from the outside to the inside. The cover 3 has a cylindrical protrusion in the middle, with a pin clearance in the middle of the protrusion. Hole 31; The E-type retaining spring 4 is an annular retaining spring with a through hole in the middle and an opening on one side, and a snap-fit ​​part 41 is provided on the inner side of the middle facing the opening; The cover 3 is set in the cover mounting groove 21, the insertion part 13 passes through the shaft abutment groove 23 and the insertion part through groove 22, and is inserted into the pin relief hole 31, the shaft 11 enters the shaft abutment groove 23, the E-type retaining spring 4 is set between the cover 3 and the cover mounting groove 21, the through hole in the middle expands when the insertion part 13 enters, and when the insertion part 13 has completely passed through, the snap-fit ​​part 41 engages with the snap-fit ​​groove 131 to fix the pin 1. The installation is more convenient and quick, with fewer parts. The elastic deformation of the E-type retaining spring 4 makes the pin 1 automatically spring back and lock in place after insertion. Compared with bolts, the cross-sectional area of ​​the pin 1 at the stress point is equal, and the shear resistance is strong.

[0022] like Figure 2 The diagram shows a quick-connect fitting for an active rotating shaft and a driven synchronous shaft. The insertion part 13 has a tapered guide part 132 on the outside of the snap-fit ​​groove 131 for easy insertion and installation. The inner side has a transition part 133 with a diameter smaller than that of the shaft body 11 and connected to the shaft body 11. The diameter of the transition part 133 is larger than the bottom diameter of the guide part 132.

[0023] like Figure 3The diagram shows a quick-connect fitting between an active rotating shaft and a driven synchronous shaft. The inner diameter of the insertion slot 22 is equal to the diameter of the transition section 133; the inner diameter of the shaft abutment slot 23 is equal to the diameter of the shaft 11. A portion of the shaft 11 enters the shaft abutment slot 23, abutting against it during rotation to ensure connection strength. The small installation clearance and tight fit of the pin 1 result in minimal relative displacement during start-up and shutdown, and low impact load.

[0024] In this embodiment, the outer side of the cap mounting groove 21 is the capping area and the inner side is the protrusion area. The outer ring of the capping area is chamfered, and there is a chamfered transition between the protrusion area and the capping area.

[0025] In this embodiment, the size of the sealing area is the same as that of the sealing 3, the inner diameter of the protrusion area is equal to the diameter of the protrusion of the sealing 3, and the depth of the protrusion area is equal to the length of the protrusion of the sealing 3 plus the thickness of the E-type retaining spring 4.

[0026] like Figure 4 The diagram shows a quick-connect fitting for an active rotating shaft and a driven synchronous shaft. The outer ring of the cover 3 has a chamfered design, and the inner bottom surface of the protrusion is a contoured design of the guide portion 132.

[0027] like Figure 5 The diagram illustrates a quick-connect fitting between a driving rotary shaft and a driven synchronous shaft. The maximum diameter of the E-type retaining ring 4 is smaller than the inner diameter of the protruding area. When the E-type retaining ring 4 is in its extreme position within the protruding area, contacting any side, its central through-hole allows the top of the guide portion 132 to pass through. Regardless of its pre-reserved position within the gap, the top surface of the guide portion 132 can always pass through the central through-hole, facilitating installation.

[0028] In this embodiment, the sealing ring 2 is manufactured using a cold heading process, which results in high material utilization, high precision, and good mechanical properties of the parts.

[0029] like Figure 6 The diagram shows a quick-connect fitting for an active rotating shaft and a driven synchronous shaft. The active rotating shaft, the driven synchronous shaft, and the bushing are fitted together with corresponding mounting holes. A pin 1 is inserted into the mounting hole at one end, and a sealing ring 2 is provided outside the mounting hole at the other end. An E-type retaining ring 4 is pre-placed inside the sealing ring 2, and a cover 3 is placed inside. During installation, the guide part 132 first passes through the middle through hole of the E-type retaining ring 4. The guide part 132 is pushed in further, and the geometric constraint of the conical surface causes the E-type retaining ring 4 to slide along the conical surface. Finally, after the guide part 132 has completely passed through, the E-type retaining ring 4 rebounds and causes the snap-fit ​​part 41 to snap into the snap-fit ​​groove 131. At this time, the pin 1 has been constrained and fixed by the E-type retaining ring 4.

[0030] It should be noted that the above description is merely a technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the present utility model, and all such modifications and substitutions should be covered within the scope of the claims of the present utility model.

Claims

1. A quick-fit coupling of a driving rotating shaft and a driven synchronous shaft, characterized in that: include: The pin (1) includes: a shaft body (11), a tail cap (12), and an insertion part (13). The shaft body (11) is a cylinder with a tail cap (12) and an insertion part (13) respectively at both ends. The insertion part (13) is provided with a snap-fit ​​groove (131). The sealing ring (2) is annular, and the inner part is connected from the outside to the inside by a sealing cover mounting groove (21), an insertion through groove (22), and a shaft abutment groove (23); The cover (3) has a cylindrical protrusion in the middle, and a pin clearance hole (31) is provided in the middle of the protrusion; E-type retaining ring (4), wherein the E-type retaining ring (4) is an annular retaining ring with a through hole in the middle and an opening on one side, and a buckle part (41) is provided on the inner side of the middle facing the opening; The cover (3) is set in the cover mounting groove (21). The insertion part (13) passes through the shaft abutment groove (23) and the insertion part through groove (22) and is inserted into the pin relief hole (31). The shaft (11) enters the shaft abutment groove (23). The E-type snap ring (4) is set between the cover (3) and the cover mounting groove (21). The middle through hole expands when the insertion part (13) enters. When the insertion part (13) has completely passed through, the snap part (41) engages with the snap groove (131) to fix the pin (1).

2. The quick-connect coupling of claim 1, wherein: The insertion part (13) has a tapered inlet (132) on the outside of the snap groove (131) and a transition part (133) on the inside that is smaller in diameter than the shaft (11) and connected to the shaft (11). The diameter of the transition part (133) is larger than the bottom diameter of the inlet part (132).

3. The quick-connect fitting for a driving rotary shaft and a driven synchronous shaft according to claim 1, characterized in that: The inner diameter of the insertion slot (22) is equal to the diameter of the transition section (133).

4. The quick-connect fitting for a driving rotary shaft and a driven synchronous shaft according to claim 1, characterized in that: The inner diameter of the shaft abutment groove (23) is equal to the diameter of the shaft (11).

5. A quick-connect fitting for a driving rotary shaft and a driven synchronous shaft according to claim 1, characterized in that: The outer side of the sealing mounting groove (21) is the sealing area and the inner side is the convex area. The outer ring of the sealing area is chamfered, and there is a chamfer transition between the convex area and the sealing area.

6. A quick-connect fitting for a driving rotary shaft and a driven synchronous shaft according to claim 5, characterized in that: The size of the sealing area is the same as that of the sealing (3), the inner diameter of the convex area is equal to the diameter of the protrusion of the sealing (3), and the depth of the convex area is equal to the length of the protrusion of the sealing (3) plus the thickness of the E-type retaining spring (4).

7. A quick-connect fitting for a driving rotary shaft and a driven synchronous shaft according to claim 6, characterized in that: The maximum diameter of the E-type snap ring (4) is smaller than the inner diameter of the convex region. When the E-type snap ring (4) is in the extreme position of contacting any side in the convex region, the middle through hole can be used to allow the top of the guide part (132) to pass through.

8. A quick-connect fitting for a driving rotary shaft and a driven synchronous shaft according to claim 1, characterized in that: The sealing ring (2) is manufactured using a cold heading process.

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