Plug-in type structure

Abstract

According to the plug-in type structure, through the design of double jacks, a plug pin can be inserted into a plug-in groove from the two symmetrical sides to limit a pipeline, when impact pressure exists in the butted pipeline, the pipeline can be reliably limited on the two opposite sides, and the risk that a sealing point leaks or even the pipeline is disengaged in a rotating mode is reduced. A plug-in type structure comprises a first connector, a second connector and a limiting assembly, the second connector extends into the first connector, the limiting assembly comprises a plug pin, plug holes and a plug-in groove, the plug-in groove is formed in the outer surface of the second connector, the first connector is provided with two plug holes, the two plug holes are formed in the two sides of the first connector respectively and correspond to the plug-in groove, and the plug pin is inserted into the plug-in groove. And the bolt is limited in the insertion hole and the insertion groove.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical connection, in particular to a plug-in structure with a more reliable limiting structure. Background Art

[0002] A pipeline is a device used to transport gases, liquids, or fluids containing solid particles. Multiple pipeline components, including but not limited to valves, pipes, and pipe connectors, can be connected within a pipeline. Within a pipeline, valves, pipes, connectors, and pipes often need to be connected. There are many different connection methods and structures for pipelines. Traditionally, threaded connections are mostly used. While this method offers high reliability, it often requires wrapping with raw tape during installation to ensure a tight seal, resulting in low installation efficiency.

[0003] In order to improve installation efficiency, the existing technology has also proposed a pipe connection method using a plug-in structure. Although this structure has high installation efficiency, the existing structure usually uses a single socket with a single pin, which can only limit one side of the pipe. When there is impact pressure in the docking pipes, there is a position that is not limited by the pin, especially the position opposite to the position where the pin is limited. There is a risk of leakage at the sealing point or even rotation and disengagement of the pipe. Utility Model Content

[0004] The utility model provides a plug-in structure, the purpose of which is to overcome the above-mentioned problems in the prior art.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] A plug-in structure includes a first connector, a second connector and a limit assembly, the second connector extends into the first connector, the limit assembly includes a pin, a socket and a plug-in slot, a plug-in slot is formed on the outer surface of the second connector, the first connector has two sockets, the two sockets are respectively arranged on both sides of the first connector and are arranged corresponding to the plug-in slot, and the pin is limited in the socket and the plug-in slot.

[0007] As an optional technical solution, the axes of the two sockets are arranged in parallel. The parallel sockets are arranged on both sides of the first joint, which can play a symmetrical limiting role from both sides of the first structure, further improving the stability of the pin limiting the joint.

[0008] As an optional technical solution, the latch is a U-shaped latch. The U-shaped latch has a certain inward holding force and can be inserted into the two sockets to make the plug-in limit structure more reliable.

[0009] As an alternative technical solution, a U-shaped latch comprises a main body section and an insertion section. The insertion sections are arranged on either side of the main body section and extend in the same direction. The distance between the insertion sections is equal to the distance between the two insertion holes. This allows the insertion sections of the U-shaped latch to be inserted precisely into the insertion holes and retained within the insertion slot.

[0010] As an optional technical solution, the U-shaped latch also has gripping segments. The minimum distance between the gripping segments is smaller than the distance between the bottom surfaces of the corresponding insertion slots. Because the U-shaped latch has a certain degree of elasticity, the gripping segments can be stretched to snap into the socket. In the fully installed position, the insertion segment is in the socket, while the gripping segments extend through the socket and grip inward, thus preventing the U-shaped latch from falling out.

[0011] As an optional technical solution, the receptacle is formed into an arc along the circumference of the first connector, and the side of the plug pin is retained in the insertion slot by the receptacle. The arcuate receptacle can be formed into a long, through-slot. Since the insertion section of the U-shaped plug pin is linear, the U-shaped plug pin does not need to be inserted. As long as the side of the U-shaped plug pin can be snapped into the receptacle, the side of the plug pin corresponding to the receptacle will pass through the receptacle and snap into the insertion slot.

[0012] As an optional technical solution, the two circumferential ends of the socket are on a first straight line, and in the cross section of the plug-in structure, the first straight line intersects the plug slot. Thus, when the side surfaces of the plug abut against the two ends of the socket, the plug passes through the socket and snaps into the plug slot corresponding to the side surfaces of the socket, and the plug and the first connector are relatively fixed in the circumferential direction, preventing relative rotation, thereby achieving a better retaining effect.

[0013] As an optional technical solution, the first connector includes a main body and a boss, and the socket includes a limit section and an extension section. The limit section is arranged to intersect with the plug slot, and the extension section is opened in the boss and is formed by one or both ends of the limit section extending straight away from the limit section. The provision of the boss can increase the length of the socket, thereby improving the reliability of the plug-in structure composed of the pin and the socket.

[0014] As an optional technical solution, the insertion groove is an annular groove surrounding the second connector and perpendicular to the central axis of the second connector. The annular groove perpendicular to the central axis of the second connector can prevent the latch from having a tendency to move axially and prevent the latch from vibrating out.

[0015] As an optional technical solution, the latch is in line contact with the bottom surface of the insertion slot in a radial cross-section of the plug-in structure. This allows the latch to contact the bottom surface of the insertion slot to inhibit circumferential rotation of the second connector relative to the first connector, thereby locking the first and second connectors circumferentially, axially, and radially.

[0016] Beneficial effects of the utility model:

[0017] According to the plug-in structure provided by the utility model, the double-hole design allows the pin to be inserted into the plug-in slot from two symmetrical sides to limit the pipeline. When there is impact pressure in the docked pipelines, the pipelines can be reliably limited on the opposite sides, reducing the risk of leakage at the sealing point or even rotation and disengagement of the pipeline. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of a plug-in structure provided by the first embodiment of the present utility model.

[0019] Figure 2 It is a schematic cross-sectional structural diagram of a plug-in structure provided by the first embodiment of the present utility model.

[0020] Figure 3 This is a schematic cross-sectional view of a plug-in structure provided in the second embodiment of the present invention.

[0021] Figure 4 This is a schematic diagram of the assembly structure of a first joint and a second joint provided in the second embodiment of the present utility model.

[0022] Figure 5 This is a structural diagram of another first joint provided by the second embodiment of the present utility model.

[0023] Figure 6 This is a schematic diagram of the cross-sectional structure of another first joint provided in the second embodiment of the present utility model.

[0024] Figure 7 It is a structural schematic diagram of a U-shaped latch provided in an embodiment of the present utility model.

[0025] Figure 8 This is a structural diagram of another latch provided in the second embodiment of the present utility model.

[0026] Description of reference numerals:

[0027] 1-first joint; 11-main body; 12-protrusion; 2-second joint; 3-limiting assembly; 31-pin; 311-main body section; 312-insertion section; 313-holding section; 32-jack; 320-first straight line; 321-limiting section; 322-extension section; 33-connection slot; 331-bottom surface of the connection slot. DETAILED DESCRIPTION

[0028] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0029] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0032] First embodiment

[0033] Figure 1 It is a schematic diagram of the overall structure of a plug-in structure provided by the first embodiment of the present utility model. Figure 2 This is a cross-sectional structural diagram of a plug-in structure provided by the first embodiment of the present utility model. Figure 1 and Figure 2 As can be seen, the plug-in structure includes a first connector 1, a second connector 2 and a limiting assembly 3. The second connector 2 is inserted into the first connector 1 and then is limited by the limiting assembly 3, so that the first connector 1 and the second connector 2 are relatively fixed in the axial and radial directions.

[0034] It should be noted that in the embodiments of the present invention, the first connector 1 and the second connector 2 can be ports of any pipeline components (including but not limited to valves, pipes, pipe connectors, etc.). The accompanying drawings show an example of the case where the first connector 1 and the second connector 2 are both valve connectors, but the present invention is not limited to this. For example, the first connector 1 and the second connector 2 are both one end ports of a valve, pipe or pipe connector, or the first connector 1 and the second connector 2 are respectively one end ports of a valve, pipe or pipe connector, all of which fall within the scope of protection of the present invention.

[0035] The limiting assembly 3 includes a pin 31, a socket 32 ​​and a socket slot 33. The socket slot 33 is formed on the outer surface of the second connector 2. The first connector 1 has two sockets 32, which are respectively arranged on both sides of the first connector 1 and correspond to the socket slot 33. The pin 31 is limited in the socket 32 ​​and the socket slot 33. It should be noted that Figure 1 and Figure 2 The structure of a limiting component 3 is shown as an example, but the limiting component 3 of the present invention is not limited to this structure. Simple replacement of the shapes of the jack 32, the pin 31 and the insertion slot 33, as long as the pin 31 passes through the jack 32 and is limited in the insertion slot 33 to limit and fix the first connector 1 and the second connector 2, all fall within the scope of protection of the present invention.

[0036] In this embodiment, through the design of double holes 32, the two holes 32 are respectively arranged on both sides of the first joint 1, so that the pin 31 can be inserted into the holes 32 on both sides of the first joint 1 and limited on both sides of the plug groove 33 of the second joint 2, so that when there is impact pressure in the docking pipelines, the pipelines can be reliably limited on the opposite sides, reducing the risk of leakage at the sealing point or even rotation and disengagement of the pipeline.

[0037] Second embodiment

[0038] The second embodiment of the present invention provides a more detailed plug-in structure based on the first embodiment. The plug-in structure provided in the second embodiment of the present invention is more suitable for the U-shaped latch 31. Other structures are the same as those in the first embodiment and are not described here.

[0039] The structures of some more preferred insertion slots 33, insertion holes 32 and insertion pins 31 are described in more detail below with reference to the accompanying drawings.

[0040] [Socket 33]

[0041] The plug-in groove 33 is set on the outer surface of the second joint 2. The plug-in groove 33 can be set completely around the second joint 2, or partially around the second joint 2. Alternatively, the plug-in groove 33 can also be a groove cut on one side of the second joint 2.

[0042] In the preferred embodiment, Figure 2 As shown, the plug-in groove 33 can be an annular groove surrounding the entire circumference of the second connector 2. During the process of the second connector 2 extending into the first connector 1, the second connector 2 can be rotated 360° around the central axis, so that the orientation of the first connector 1 and the second connector 2 can be adjusted to the expected orientation, and there is no need to align the socket 32 ​​and the plug-in groove 33 during assembly. After the pin 31 is extended, it can be limited and matched with the plug-in groove 33, which makes installation more convenient.

[0043] Further preferably, the plug groove 33 is perpendicular to the central axis of the second joint 2. If the second joint 2 is made of metal, the second joint 2 with the annular plug groove 33 can be directly manufactured by turning, which is more convenient for processing. The annular groove perpendicular to the central axis of the second joint 2 can prevent the pin 31 from having a tendency to move axially, thereby preventing the pin 31 from vibrating out.

[0044] In other preferred embodiments, Figure 3 As shown, the plug-in slot 33 is formed so that the bottom surface 331 of the plug-in slot obtained by linearly cutting the surface of the second connector 2 is a plane. In particular, on the radial cross-section of the plug-in structure, the pin 31 is in linear contact with the bottom surface 331 of the plug-in slot. After the pin 31 extends into the annular groove along the insertion hole 32, it contacts the bottom surface 331 of the plug-in slot. Therefore, when the second connector 2 has a tendency to rotate circumferentially, the bottom surface 331 of the plug-in slot will abut against the pin 31, suppressing the circumferential rotation tendency of the second connector 2, so that the first connector 1 and the second connector 2 are locked in the circumferential, axial and radial directions. Furthermore, the bottom surface 331 of the plug-in slot can be set as a plane connected end to end, that is, on the radial cross-section of the plug-in structure, the bottom surface 331 of the plug-in slot is formed into a polygon, so that the pin 31 can be locked with the bottom surfaces 331 of the plug-in slot on any two opposite sides, making assembly more convenient.

[0045] [Jack 32]

[0046] The sockets 32 are on both sides of the first joint 1, that is, the sockets 32 are symmetrically distributed along the diameter of the first joint 1. When the second joint 2 is inserted into the first joint 1 to the installation position, the two sockets 32 are just aligned with the insertion groove 33 in the axial direction, so that the pin 31 can be inserted into the insertion groove 33 after passing through the sockets 32, thereby realizing axial limitation of the first joint 1 and the second joint 2 from both sides of the pipeline connection.

[0047] Figure 2 、 Figure 4 、 Figure 5 and Figure 6 3. The following examples show three ways of forming the jack 32. Figure 2 As shown, the socket 32 ​​can be a through hole that passes through the first connector 1 along the tangent direction of the second connector 2, which is more convenient for processing, and the pin 31 can be inserted from any side to achieve axial limitation of the first connector 1 and the second connector 2, which can improve the reliability of the plug-in structure.

[0048] like Figure 4 As shown, the first connector 1 comprises a main body 11 and a boss 12. The boss 12 protrudes from the main body 11 and extends tangentially from the first connector 1. A socket 32 ​​is disposed within the boss 12 and comprises a retaining section 321 and an extension section 322. The retaining section 321 intersects the insertion slot 33, while the extension section 322 is disposed within the boss 12 and extends linearly from one or both ends of the retaining section 321 away from the retaining section 321. The provision of the boss 12 increases the length of the socket 32, thereby improving the reliability of the plug-in structure formed by the latch 31 and the socket 32.

[0049] As a preferred embodiment, one end of the boss 12 is open, and the socket 32 ​​is formed as a blind hole, thereby reducing leakage points. Further preferably, the end surface of the boss 12 is flat, and the end of the socket 32 ​​is opened on the end surface of the boss 12. This facilitates positioning and processing of the socket 32.

[0050] like Figure 5 and Figure 6 As shown, the insertion hole 32 is formed in an arc shape along the circumference of the first connector 1, that is, a through groove is formed on the two side surfaces of the first connector 1 along the circumference. Since the insertion hole 32 is formed into a long arc-shaped through groove, and the insertion section 312 of the U-shaped pin 31 is straight, the U-shaped pin 31 does not need to be inserted. As long as the side of the U-shaped pin 31 is snapped into the insertion hole 32, the side of the pin 31 corresponding to the insertion hole 32 will pass through the insertion hole 32 and be snapped into the insertion groove 33 for a limit position.

[0051] Furthermore, the circumferential ends of the socket 32 ​​lie on a first straight line 320. In the cross-section of the plug-in structure, the first straight line 320 intersects the plug-in slot 33. That is, the line connecting the two ends of each socket 32 ​​passes through the interior of the plug-in slot 33. Thus, when the side faces of the latch 31 abut the ends of the socket 32, the latch 31 passes through the socket 32 ​​corresponding to the side faces of the socket 32 ​​and snaps into the plug-in slot 33 to be retained. Furthermore, the latch 31 and the first connector 1 are relatively fixed in the circumferential direction and do not rotate relative to each other, resulting in a better retaining effect. Preferably, the first straight line 320 can be collinear with a tangent to the bottom surface 331 of the plug-in slot. Thus, when the side faces of the latch 31 pass through the socket 32 ​​corresponding to the side faces of the socket 32, the latch 31 snaps into the plug-in slot 33 and abuts tangentially with the bottom surface 331 of the plug-in slot, further enhancing the retaining effect of the plug-in structure.

[0052] It should be noted that in this embodiment, a U-shaped pin 31 is used in combination with two sockets 32 for illustration, but this does not limit the solution of two sockets 32 to being matched with a U-shaped pin 31. In some embodiments, two straight rod-shaped pins 31 can also be inserted into two sockets 32 respectively for positioning, which also falls within the scope of protection of the present invention.

[0053] [Latch 31]

[0054] During the installation of the first connector 1 and the second connector 2, the pin 31 needs to be inserted into the socket 32 ​​and locked in place with the insertion groove 33 on the surface of the second connector 2. The specific structure of the pin 31 is not limited herein, as long as it can be inserted into the socket 32 ​​and fall into the insertion groove 33. Depending on the usage scenario, the pin 31 can be a straight rod pin 31, an arc-shaped pin 31, a U-shaped pin 31, etc. The above solutions of simply replacing the matching shapes of the pin 31 and the socket 32 ​​also fall within the scope of protection of the present invention.

[0055] Figure 7 Schematic diagram of the structure of the U-shaped latch 31 provided in the embodiment of the present invention. Figure 5 and Figure 7 For example, regarding the U-shaped latch 31, the first connector 1 has two insertion holes 32, which are parallel and located on either side of the first connector 1. The U-shaped latch 31 includes a main section 311 and an insertion section 312. The insertion sections 312 are arranged on either side of the main section 311 and extend in the same direction. The distance between the insertion sections 312 is equal to the distance between the two insertion holes 32. This allows the insertion sections 312 of the U-shaped latch 31 to fit snugly within the insertion holes 32 and be retained within the insertion slot 33. This further improves the reliability of the connection and fixation structure between the latch 31, the insertion hole 32, and the insertion slot 33, while also balancing the limiting force at the connection and reducing stress concentration at a single insertion hole 32.

[0056] Figure 8 This is a structural diagram of another latch 31 provided in the second embodiment of the present invention. Figure 5 and Figure 8 From the perspective of the U-shaped latch 31, the U-shaped latch 31 may include a main body section 311, an insertion section 312, and a gripping section 313. The gripping section 313 may be formed by extending the ends of the two insertion sections 312 close to each other, or may be formed in other ways, which are not limited here. The minimum distance between the gripping sections 313 ( Figure 8The distance between the bottom end of the middle gripping section (the lowest end of the middle gripping section) and the insertion section 312 is smaller than the distance between the bottom surface 331 of the insertion slot and the insertion section 312 (if the insertion slot 33 is annular, this is the diameter of the bottom surface 331). Because the U-shaped latch 31 has a certain degree of elasticity, the gripping section 313 can be stretched to fit into the insertion hole 32. In the fully installed position, the insertion section 312 is within the insertion hole 32, while the gripping section 313 passes through the insertion hole 32 and grips inward, preventing the U-shaped latch 31 from being dislodged.

[0057] In some other preferred embodiments, the plug-in structure further includes a sealing ring (not shown in the figure), which can be sleeved on the outer surface of the second joint 2 to seal the passage formed by the docking of the first joint 1 and the second joint 2, wherein the sealing ring is at least provided between the external connection end of the second joint 2 and the plug-in groove 33, wherein the external connection end refers to the end of the first joint 1 facing the second joint 2 when the first joint 1 and the second joint 2 are assembled, or the end of the second joint 2 facing the first joint 1. When the second joint 2 is inserted into the first joint 1 for plugging, the sealing ring sleeved on the outer surface of the second joint 2 is squeezed and deformed, thereby being pressed between the inner surface of the first joint 1 and the outer surface of the second joint 2, and the first sealing ring is closer to the external connection end of the second joint 2, thereby achieving a sealing effect on the connection structure between the first joint 1 and the second joint 2, and preventing the medium in the passage from overflowing from the connection between the first joint 1 and the second joint 2.

[0058] In this embodiment, the U-shaped pin 31 cooperates with the two sockets 32 to better achieve reliable limiting of the first connector 1 and the second connector 2. In addition, the U-shaped pin 31 can cooperate with a variety of sockets 32. Users can freely choose the socket 32 ​​structure and cooperation type according to their needs, which can adapt to various installation environment requirements.

[0059] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A plug-in structure, characterized in that: It includes a first connector, a second connector and a limit assembly, the second connector extends into the first connector, the limit assembly includes a pin, a socket and a plug-in slot, a plug-in slot is formed on the outer surface of the second connector, the first connector has two sockets, the two sockets are respectively arranged on both sides of the first connector and are arranged corresponding to the plug-in slot, and the pin is limited to the socket and the plug-in slot.

2. The plug-in structure according to claim 1, characterized in that: The axes of the two jacks are arranged in parallel.

3. The plug-in structure according to claim 2, characterized in that: The latch is a U-shaped latch.

4. The plug-in structure according to claim 3, characterized in that: The U-shaped latch comprises a main body section and an insertion section. The insertion sections are arranged on both sides of the main body section and extend in the same direction. The distance between the insertion sections is equal to the distance between the two insertion holes.

5. The plug-in structure according to claim 4, characterized in that: The U-shaped latch further comprises a clamping section, and the minimum distance between the clamping sections is smaller than the distance between the bottom surfaces of the insertion slots corresponding to the insertion sections.

6. The plug-in structure according to claim 3, characterized in that: The insertion hole is opened along the circumference of the first joint to form an arc shape, and the side surface of the plug is limited in the insertion groove through the insertion hole.

7. The plug-in structure according to claim 6, characterized in that: Two ends of the insertion hole in the circumferential direction are on a first straight line, and in a cross section of the plug-in structure, the first straight line intersects with the plug-in slot.

8. The plug-in structure according to claim 3, characterized in that: The first connector includes a main body and a convex seat, and the socket includes: A limiting section is arranged to intersect with the plug-in slot; The extension section is arranged in the convex seat and is formed by linearly extending from one end or both ends of the limiting section in a direction away from the limiting section.

9. The plug-in structure according to claim 1, characterized in that: The plug-in groove is an annular groove surrounding the second connector, and the plug-in groove is perpendicular to the central axis of the second connector.

10. The plug-in structure according to claim 1, characterized in that: On a radial cross section of the plug-in structure, the plug pin is in line contact with the bottom surface of the plug-in slot.

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