Threaded locking quick coupling

Abstract

This application relates to a threaded locking quick connector, including a female connector and a male connector. The female connector includes a female housing, within which a retaining ring and a female valve spindle are disposed. The retaining ring includes an inner ring body, an outer ring body, and two connecting rods. The inner ring body is disposed inside the outer ring body and connected to the outer ring body via the two connecting rods. The inner ring body, outer ring body, and two connecting rods form two symmetrically distributed 180° fan-shaped through slots. The outer ring body is fixed to the inner wall of the female housing. Multiple flow holes are formed on the connecting rods. The female valve spindle is elastically connected within the inner ring body. This application utilizes the inner ring body, outer ring body, and two connecting rods to form two symmetrically distributed 180° fan-shaped through slots, and provides flow holes on the connecting rods. The fan-shaped through slots and flow holes cooperate to reduce the obstruction area of ​​the inner and outer ring bodies required for installing the female valve spindle, thereby increasing the liquid flow rate and improving the efficiency of liquid flow.

Description

Technical Field

[0001] This application relates to the field of quick coupling technology, and in particular to a threaded locking quick coupling. Background Technology

[0002] In the mold manufacturing industry, to control the temperature of the mold during the molding process and ensure product quality and production efficiency, quick couplings are typically used to quickly supply and disconnect coolant. Quick couplings for mold coolant generally consist of a male and a female end, which connect to form a channel for coolant flow, ensuring stable circulation of coolant within the mold cooling circuit.

[0003] In existing technology, the female end structure of a quick connector for mold coolant typically includes a housing, a valve spindle, and a retaining sleeve for elastically connecting the valve spindle and the housing. Under the elastic action of the retaining sleeve and other components, the valve spindle can control the opening and closing of the connector. When the male end is inserted into the female end, the valve spindle is pushed open, allowing coolant to flow; when the male end is pulled out, the valve spindle, under the action of elastic force, engages the housing spring, achieving a seal.

[0004] To facilitate coolant flow, the retaining sleeve typically has evenly distributed circular holes as flow channels. However, due to limitations in the size and distribution of these holes, the flow area is small, resulting in a low coolant flow rate. In scenarios with high mold cooling requirements, this structure restricts the coolant transmission speed, reducing the efficiency of liquid transfer. Utility Model Content

[0005] This application provides a threaded locking quick coupling with higher flow efficiency.

[0006] The threaded locking quick coupling provided in this application adopts the following technical solution:

[0007] A threaded locking quick connector includes a female connector and a male connector. The female connector includes a female housing, within which a retaining ring and a female valve spindle are disposed. The retaining ring includes an inner ring body, an outer ring body, and two connecting rods. The inner ring body is disposed inside the outer ring body and connected to the outer ring body via the two connecting rods. The inner ring body, the outer ring body, and the two connecting rods form two symmetrically distributed 180° fan-shaped through slots. The outer ring body is fixed to the inner wall of the female housing. Multiple flow holes are formed on the connecting rods. The female valve spindle is elastically connected to the inner ring body, and the end of the female valve spindle abuts against the opening of the female housing for connecting to the male connector via elastic force.

[0008] Preferably, the female valve spindle is a stepped shaft, with the small-diameter section of the stepped shaft passing through the inner ring body, and the large-diameter section of the stepped shaft located at the end of the small-diameter section away from the inner ring body. A valve spring is provided between the inner ring body and the large-diameter section, and the diameter of the valve spring is smaller than the diameter of the large-diameter section.

[0009] Preferably, the inner wall of the female housing has a tapered section for connecting the opening of the male connector to the small-diameter end of the tapered section, and a recess is formed in the middle of the tapered section; a sealing ring is provided on the outer periphery of the large-diameter section of the female valve spindle, and a sealing post is provided at the top end. The size of the sealing post is the same as the size of the opening of the female housing, and a tapered surface matching the angle of the tapered section is formed between the sealing ring and the sealing post; the tapered surface fits into the tapered section, the sealing ring is fitted into the recess, and the sealing post passes through the opening.

[0010] Preferably, the male connector includes a male housing, the outer wall of which has a groove, and a protrusion on one side of the groove. A male valve core is fixed inside the male housing. A connecting sleeve on the same side as the opening is provided on the female housing. The connecting sleeve has multiple circular holes, and its outer wall is movably connected to a sleeve spring. The sleeve has a groove corresponding to the circular holes. The male housing is inserted into the connecting sleeve, and the male valve core passes through the opening and abuts against the sealing post. A steel ball is movably connected in the groove, the circular holes, and the groove. The sleeve fixes the steel ball in the groove by axial movement.

[0011] Preferably, the female housing is provided with a female internal thread for connecting the mold on the side opposite to the male housing, and the male housing is provided with a male internal thread for connecting external equipment on the side opposite to the female housing.

[0012] In summary, this application includes at least one of the following beneficial technical effects:

[0013] 1. This application forms two symmetrically distributed 180° fan-shaped through slots through an inner ring body, an outer ring body, and two connecting rods, and opens flow holes on the connecting rods. The fan-shaped through slots and flow holes cooperate to reduce the blocking area of ​​the inner ring body and outer ring body on the flowing liquid required for installing the female valve core shaft, thereby increasing the liquid throughput and improving the efficiency of liquid flow.

[0014] 2. The sealing effect of the female valve spindle is increased when the male connector is not connected by the fitting structure of the sealing ring and the recess, as well as the fitting structure of the seal and the opening. The cooperation between the tapered section and the tapered surface makes it easier for the female valve spindle to be pushed out of the opening by the male valve spindle, thus improving the connection efficiency.

[0015] 3. The male shell is fixed inside the connecting sleeve by the cooperation of steel balls and the sleeve, which is simple to operate and improves the connection efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of this application.

[0017] Figure 2 This is a schematic diagram of the structure of the female shell in a preferred embodiment of this application.

[0018] Figure 3 This is a cross-sectional view of the usage state in a preferred embodiment of this application.

[0019] Figure 4 yes Figure 3 Enlarged view of part A in the middle.

[0020] Figure 5 This is a schematic diagram of the connection structure between the female valve core and the retaining ring in a preferred embodiment of this application.

[0021] Explanation of reference numerals in the attached drawings: 1. Female housing; 11. Opening; 12. Tapered section; 13. Recess; 14. Female internal thread; 2. Retaining ring; 21. Inner ring body; 22. Outer ring body; 23. Connecting rod; 24. Flow hole; 3. Female valve spindle; 31. Small diameter section; 32. Large diameter section; 33. Valve spring; 34. Sealing ring; 35. Sealing post; 4. Male housing; 41. Groove; 42. Male internal thread; 5. Male valve spindle; 6. Connecting sleeve; 61. Round hole; 7. Sleeve; 71. Groove; 8. Steel ball. Detailed Implementation

[0022] The present application will be further described in detail below with reference to the accompanying drawings.

[0023] This application provides a threaded locking quick coupling, such as Figures 1 to 5 As shown, it includes a female connector and a male connector. The female connector is used to connect to the mold, and the male connector is used to connect to the external coolant pipe. The male connector is inserted into the female connector to connect the coolant pipe to the inside of the mold.

[0024] like Figure 1 , Figure 2 and Figure 5As shown, the female connector includes a female housing 1, which is made of stainless steel. The female housing 1 contains a fixing ring 2 and a female valve spindle 3. The fixing ring 2 includes an inner ring body 21, an outer ring body 22, and two connecting rods 23. The inner ring body 21 is located inside the outer ring body 22 and is connected to the outer ring body 22 by the two connecting rods 23. The inner ring body 21, the outer ring body 22, and the two connecting rods 23 form two symmetrically distributed 180° fan-shaped through slots. Multiple flow holes 24 are formed on the connecting rods 23. The outer ring body 22 is fixed to the inner wall of the female housing 1. The fan-shaped through slots and flow holes 24 are used for liquid flow. The combination of the two makes the channel size for liquid flow on the inner circumference of the outer ring body 22 larger and the liquid flow efficiency higher. One end of the female housing 1 is provided with an opening 11 for the male connector to pass through. The other end, the installation port, is provided with a female internal thread 14 for connecting the mold.

[0025] like Figure 3 and Figure 4 As shown, the female valve core 3 is a stepped shaft. The small-diameter section 31 of the stepped shaft passes through the inner ring 21, and the large-diameter section 32 of the stepped shaft is located at the end of the small-diameter section 31 away from the inner ring 21. A valve spring 33 is provided between the inner ring 21 and the large-diameter section 32. The two ends of the valve spring 33 are fixed to the inner ring 21 and the large-diameter section 32, respectively. The diameter of the valve spring 33 is smaller than the diameter of the large-diameter section 32. A sealing ring 34 is provided on the outer periphery of the large-diameter section 32, and a sealing post 35 is provided on the top. A conical surface is formed between the sealing ring 34 and the sealing post 35. The sealing ring 34 and the sealing post 35 are made of one of nitrile rubber, fluororubber, and silicone rubber. The size of the sealing post 35 is the same as the size of the opening 11 of the female housing 1.

[0026] like Figure 2 and Figure 3 As shown, the inner wall of the female housing 1 has a tapered section 12. The opening 11 for connecting the male connector is connected to the small diameter end of the tapered section 12. A recess 13 is formed in the middle of the tapered section 12. The tapered surface between the sealing ring 34 and the sealing post 35 matches the angle of the tapered section 12. The stepped shaft abuts against the opening 11 axially by the elastic force of the valve spring 33, so that the tapered surface fits and connects with the tapered section 12. The sealing ring 34 is fitted into the recess 13. The sealing post 35 passes through the opening 11 to close the opening 11. The double sealing of the sealing ring 34 and the sealing post 35 ensures the sealing performance of the female connector when it is not in use.

[0027] like Figures 2 to 4As shown, the female shell 1 is provided with a connecting sleeve 6 on the same side as the opening 11, and a stop is provided at the end. The connecting sleeve 6 is provided with a plurality of round holes 61, and a sleeve shell 7 is movably connected to the outer wall. A sleeve shell 7 spring is provided between the sleeve shell 7 and the connecting sleeve 6. The sleeve shell 7 spring can move axially and does not detach from the connecting sleeve 6 under the stop of the stop. The sleeve shell 7 is provided with a groove 71 corresponding to the round hole 61. The relative position of the groove 71 and the round hole 61 is changed by the axial movement of the sleeve shell 7.

[0028] like Figure 3 and Figure 4 As shown, the male connector includes a male housing 4, one end of which has a liquid inlet, and the other end has a male internal thread 42 for connecting external equipment. A male valve spindle 5 is fixed inside the male housing 4. The male housing 4 passes through the female housing 1. The male valve spindle 5 passes through the opening 11 and abuts against the sealing post 35. Gradually push the female valve spindle 3 to release the sealing structure with the opening 11 so as to connect the female housing 1. A groove 41 is formed on the outer wall of the male housing 4. A steel ball 8 is movably connected in the groove 41 and the round hole 61. The sleeve 7 changes the relative position of the groove 71 and the round hole 61 by axial movement.

[0029] In the specific operation of the threaded locking quick coupling of this application, the female housing 1 is first installed on the mold through the female thread. At this time, the sealing post 35 passes through the opening 11 of the female housing 1, and the sealing ring 34 is embedded in the recess 13. The groove 41 of the push sleeve 7 is aligned with the round hole 61 on the connecting sleeve 6. Then, the male housing 4 is connected to the external device through the male internal thread 42. The male housing 4 is then inserted into the connecting sleeve 6. The outer surface of the male housing 4 pushes the steel ball 8 into the groove 71 until the groove 41 of the male housing 4 is aligned with the round hole 61. The steel ball 8 then falls back into the groove. In step 41, the sleeve 7 is then released. Under the elastic force of the spring in the sleeve 7, the sleeve 7 abuts against the stop block. At the same time, the male valve spindle 5 abuts against the sealing post 35 and compresses the valve spring 33, causing the female valve spindle 3 to move as a whole. This releases the sealing structure between the female valve spindle and the opening 11 of the female housing 1, allowing the interior of the female housing 1 and the interior of the male housing 4 to communicate until the end of the male housing 4 abuts against the end of the female housing 1. At the same time, the groove 71 moves backward, and the inner wall of the sleeve 7 engages the steel ball 8 in the round hole 61 and the groove 41, thereby fixing the male housing 4 onto the connecting sleeve 6, thus completing the connection of the quick connector.

[0030] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A threaded locking quick connector, comprising a female connector and a male connector, characterized in that: The female connector includes a female housing (1), a fixing ring (2) and a female valve spindle (3) are provided inside the female housing (1). The fixing ring (2) includes an inner ring body (21), an outer ring body (22) and two connecting rods (23). The inner ring body (21) is located inside the outer ring body (22) and is connected to the outer ring body (22) by the two connecting rods (23). The inner ring body (21), the outer ring body (22) and the two connecting rods (23) form two symmetrically distributed 180° fan-shaped through slots. The outer ring body (22) is fixed to the inner wall of the female housing (1). Multiple flow holes (24) are formed on the connecting rods (23). The female valve spindle (3) is elastically connected in the inner ring body (21). The end of the female valve spindle (3) abuts against the opening (11) of the female housing (1) for connecting the male connector by elastic force.

2. The threaded locking quick connector according to claim 1, characterized in that: The female valve spindle (3) is a stepped shaft. The small diameter section (31) of the stepped shaft passes through the inner ring body (21). The large diameter section (32) of the stepped shaft is located at the end of the small diameter section (31) away from the inner ring body (21). A valve spring (33) is provided between the inner ring body (21) and the large diameter section (32). The diameter of the valve spring (33) is smaller than the diameter of the large diameter section (32).

3. A threaded locking quick connector according to claim 2, characterized in that: The inner wall of the female shell (1) is formed with a tapered section (12) for connecting the opening (11) of the male connector to the small diameter end of the tapered section (12), and a recess (13) is formed in the middle of the tapered section (12). A sealing ring (34) is provided on the outer periphery of the large diameter section (32) of the female valve spindle (3), and a sealing post (35) is provided on the top end. The size of the sealing post (35) is the same as the size of the opening (11) of the female housing (1). A conical surface matching the angle of the conical section (12) is formed between the sealing ring (34) and the sealing post (35). The conical surface is fitted and connected to the conical segment (12), the sealing ring (34) is fitted to the recess (13), and the sealing post (35) passes through the opening (11).

4. A threaded locking quick connector according to claim 3, characterized in that: The male connector includes a male housing (4), the outer wall of which is formed with a groove (41), a protrusion is provided on one side of the groove (41), and a male end valve spindle (5) is fixed inside the male housing (4). The female shell (1) is provided with a connecting sleeve (6) on the same side as the opening (11). The connecting sleeve (6) is provided with a plurality of round holes (61) around it, and the outer wall is movably connected to a shell (7) through a shell spring. The shell (7) is provided with a groove (71) corresponding to the round holes (61). The male housing (4) is inserted into the connecting sleeve (6), the male valve spindle (5) passes through the opening (11) and abuts against the sealing post (35), and steel balls (8) are movably connected in the groove (41), the round hole (61) and the slot (71). The sleeve (7) fixes the steel balls (8) in the groove (41) by axial movement.

5. A threaded locking quick connector according to claim 4, characterized in that: The female housing (1) is provided with a female internal thread (14) for connecting the mold on the side opposite to the male housing (4), and the male housing (4) is provided with a male internal thread (42) for connecting external equipment on the side opposite to the female housing (1).

Images