CN113775836B - Joint - Google Patents
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- Publication number
- CN113775836B CN113775836B CN202010522880.4A CN202010522880A CN113775836B CN 113775836 B CN113775836 B CN 113775836B CN 202010522880 A CN202010522880 A CN 202010522880A CN 113775836 B CN113775836 B CN 113775836B
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- China
- Prior art keywords
- deformable
- joint
- connection
- threaded
- main body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/007—Joints with sleeve or socket clamped by a wedging action
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L21/00—Joints with sleeve or socket
- F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
- F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
Abstract
The present application provides a joint for fluidly connecting a threaded tube with a light pipe, comprising: a main body part having a cavity; a deformable connecting portion having one end connected to the main body portion, the deformable connecting portion being capable of contracting and expanding with respect to the one end to change an outer peripheral dimension of the deformable connecting portion; a sealing ring disposed around the deformable connection portion; a pressing member having a fluid passage therein, the pressing member being at least partially received in the cavity of the main body portion and configured to be insertable into the deformable coupling portion to expand the deformable coupling portion so that the sealing ring can be pressed against the inner wall of the light pipe by the deformable coupling portion, the pressing member being fixable relative to the main body portion so that the deformable coupling portion can be maintained in an expanded state, and the fluid passage of the pressing member being capable of communicating the threaded pipe with the light pipe; and one end of the threaded connection part is connected with the main body part or the pressing piece and is provided with threads matched with the threaded pipe.
Description
Technical Field
The present application relates to fittings and more particularly to fittings that fluidly connect a threaded tube with a light pipe.
Background
It is often desirable in the industry to connect a threaded pipe to a light pipe, such as the water inlet pipe of an air conditioner (typically a standard threaded pipe) to a customer's water supply pipe (typically a light pipe). The prior art generally requires welding or bonding a screw joint to a water supply pipe (light pipe), and then screwing a water inlet pipe (standard screw pipe) of an air conditioner to the screw joint, thereby connecting the water supply pipe (light pipe) to the water inlet pipe (standard screw pipe). The whole process is complex, corresponding welding equipment and accessories are needed, the time consumption is more, and the efficiency is low.
Disclosure of Invention
The application provides a joint which is easy to install and disassemble. The joint includes: a deformable connection portion having one end connected to the body portion, the deformable connection portion being capable of contracting and expanding with respect to the one end to change an outer peripheral dimension of the deformable connection portion; a sealing ring disposed around the deformable connection; a compression member having a fluid passage therein, the compression member being at least partially received in the cavity of the body portion and configured to be insertable into the deformable coupling portion to expand the deformable coupling portion so as to compress the sealing ring against an inner wall of the light pipe via the deformable coupling portion, the compression member being fixable relative to the body portion so as to be capable of holding the deformable coupling portion in an expanded state and the fluid passage of the compression member being capable of communicating the threaded tube with the light pipe; and a screw connection part, one end of which is connected with the main body part or the pressing member, and which has a screw thread matched with the screw pipe.
According to the joint of the present application, the deformable connecting section includes a plurality of elastic segments arranged at intervals, the plurality of elastic segments being arranged around an axis of the deformable connecting section, each of the plurality of elastic segments including a connecting end connected with the main body section and a free end opposite to the connecting end, outer surfaces of the plurality of elastic segments collectively forming an outer periphery of the deformable connecting section, inner surfaces of each of the plurality of elastic segments collectively forming a tapered space, the tapered space tapering from the connecting end of the plurality of elastic segments toward the free end.
According to the joint of the present application, the pressing member has a tapered portion and a shank portion, the shank portion being connected to a thicker end of the tapered portion, the tapered portion being capable of being at least partially accommodated in the tapered space.
According to the joint of the present application, the main body portion includes a first portion and a second portion, which are connected to the deformable connecting portion and the screw connecting portion, respectively, the first portion and the second portion being connected to each other by screw threads.
According to the joint of the present application, the tapered portion and the shank portion together form an umbrella shape, so that an end of the tapered portion connected to the shank portion forms a driving surface at the periphery of the shank portion; the joint further includes a plurality of driving members threadably coupled to the body portion, and one end of the driving members is capable of abutting the driving surface to drive the compression member to expand the deformable connection portion.
According to the connector of the application, a partition plate is arranged in the accommodating cavity of the main body part, an opening and a plurality of threaded holes are arranged on the partition plate, and the opening is sized to accommodate the handle part of the compressing piece; the driving member is configured to be able to pass through the plurality of threaded holes to drive the compression member.
According to the joint of the present application, the deformable connecting section includes a plurality of elastic segments arranged at intervals, the plurality of elastic segments being arranged around an axis of the deformable connecting section, each of the plurality of elastic segments including a connecting end connected with the main body section and a free end opposite to the connecting end, outer surfaces of the plurality of elastic segments collectively forming an outer periphery of the deformable connecting section, inner surfaces of each of the plurality of elastic segments collectively forming a tapered space, the tapered space tapering from the free ends of the plurality of elastic segments toward the connecting end.
According to the joint of the application, the pressing element has a conical portion and a shank portion, the shank portion being connected to a thinner end of the conical portion, the conical portion being at least partially receivable in the conical space in a pre-mounted state of the joint.
According to the joint of the present application, the outer periphery of the shank portion is provided with the external thread, the main body portion is provided with the internal thread which is engaged with the external thread of the shank portion, and the pressing member is movable relative to the main body portion by the threaded engagement to expand the deformable connecting portion.
According to the joint of the present application, the lower end of the seal ring is bonded to the main body portion.
Drawings
Fig. 1A is a perspective view of a joint 100 according to a first embodiment of the present application;
FIG. 1B is an exploded view of the fitting 100 shown in FIG. 1A;
FIG. 2 is a cross-sectional view of the deformable coupling portion 120 and the first subsection 102 of the body portion 110 shown in FIG. 1B taken along line A-A in FIG. 1A;
fig. 3 is a perspective view of the second sub 109 of the body 110 and the threaded connection 105 shown in fig. 1B;
FIG. 4 is a cross-sectional view taken along line A-A of FIG. 1A when the fitting 100 shown in FIG. 1A is in a pre-installed state;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 1A when the fitting 100 of FIG. 1A is coupled to a light pipe 590 and a threaded pipe 591;
fig. 6A is a perspective view of a joint 600 according to a second embodiment of the present application;
FIG. 6B is an exploded view of the joint 600 shown in FIG. 6A;
FIG. 7 is a cross-sectional view taken along line B-B of FIG. 6A with the joint 600 of FIG. 6A in a pre-installed state;
fig. 8A is a perspective view of a joint 800 according to a third embodiment of the present application;
FIG. 8B is an exploded view of the joint 800 shown in FIG. 8A;
FIG. 9 is a cross-sectional view taken along line C-C of FIG. 8A with the joint 800 shown in FIG. 8A in a pre-installed state;
fig. 10A is a perspective view of a joint 1000 according to a fourth embodiment of the present application;
FIG. 10B is an exploded view of the fitting 1000 shown in FIG. 10A;
FIG. 11 is a cross-sectional view taken along line D-D of FIG. 10A with the joint 1000 shown in FIG. 10A in a pre-installed state;
fig. 12 is a cross-sectional view of a joint 1200 according to a fifth embodiment of the present application in a pre-installed state.
Detailed Description
Various embodiments of the present application are described below with reference to the accompanying drawings, which form a part hereof. It is to be understood that, although directional terms, such as "front", "rear", "upper", "lower", "left", "right", etc., may be used in the present application to describe various example structural parts and elements of the present application, these terms are used herein for convenience of description only and are determined based on the example orientations shown in the drawings. Since the disclosed embodiments of the application may be arranged in a variety of orientations, these directional terms are used by way of illustration only and are in no way limiting.
Fig. 1A is a perspective view of a joint 100 according to a first embodiment of the present application, and fig. 1B is an exploded view of the joint 100 shown in fig. 1A, for illustrating the overall structure and specific components of the joint 100. As shown in fig. 1A and 1B, the joint 100 has an axis X, which includes a main body portion 110, and a deformable connection portion 120 and a threaded connection portion 105, which are connected to opposite ends of the main body portion 110, respectively. The deformable coupling 120 is used to couple the fitting 100 to a light pipe 590 (see FIG. 5) and the threaded coupling 105 is used to couple the fitting 100 to a threaded pipe 591 (see FIG. 5). The joint 100 further comprises a sealing ring 101, a compression member 103 and a driving member 104. Wherein a sealing ring 101 is provided at the periphery of the deformable coupling portion 120 for sealing a gap between the joint 100 and the light pipe 590. The driving member 104 applies a driving force to the pressing member 103 to spread the deformable coupling portion 120 outward by the pressing member 103, thereby achieving the coupling between the joint 100 and the light pipe 590 by the deformation of the deformable coupling portion 120.
Specifically, as shown in fig. 1B, the main body 110 includes a first subsection 102 and a second subsection 109. The first section 102 and the second section 109 are respectively cylindrical, the first section 102 has external threads (not shown) on an outer surface thereof, and the second section 109 has internal threads (not shown) on an inner surface thereof. The outer diameter of the first section 102 and the inner diameter of the second section 109 are sized to match such that the first section 102 and the second section 109 can be threadably connected to one another. The joined first and second sections 102, 109 together form a cavity 111 of the body portion 110.
A deformable connection 120 is provided at the upper end of the first subsection 102, which has eight elastic segments 121. The eight elastic segments 121 are arranged spaced apart from each other around the axis X of the deformable connection 120 (i.e., the axis X of the joint 100). Each of the eight elastic segments 121 includes a connecting end 122 connected to the first subsection 102 and a free end 123 opposite the connecting end 122, the free end 123 being pivotable about the connecting end 122 toward or away from the axis X so that the eight elastic segments 121 can be folded or unfolded relative to each other. So that the deformable coupling portion 120 can contract or expand with respect to the coupling end 122 to change the outer circumferential dimension of the deformable coupling portion 120. In the expanded position of the deformable coupling portion 120, the deformable coupling portion 120 is capable of coupling the connector 100 with the light pipe 590 (see FIG. 5). In other embodiments, the number of elastic segments 121 may be two, three … …, and is not limited to the eight shown in the figures.
The material of the seal ring 101 is rubber, which is sleeved on the outer periphery of the deformable connecting part 120. The seal ring 101 is cylindrical, and the size of the seal ring 101 is configured to be slightly larger than the outer peripheral size of the deformable connection section 120 when not deformed, and can be changed with a change in the outer peripheral size of the deformable connection section 120. The inner surface of the lower end of the sealing ring 101 is bonded with the outer surface of the upper end of the first subsection 102 by adopting sealant, which is beneficial to positioning the sealing ring 101 and preventing the joint 100 from falling off the sealing ring 101 in the transportation process. In some embodiments, the height of the seal ring 101 in the X-axis direction is greater than the height of the deformable connection section 120 such that the upper end of the seal ring 101 extends beyond the free end of the deformable connection section 120, such that the seal ring 101 is able to fully receive the deformable connection section 120 within the cavity of the seal ring 101. In some embodiments, the upper end of the seal ring 101 is at least aligned with the free end of the deformable connection 120 to ensure that the seal ring 101 is capable of sealing.
The compression member 103 has a generally umbrella shape with a tapered portion 106 and a shank portion 107, the shank portion 107 being cylindrical. The tapered portion 106 is at least partially received in the deformable connection portion 120 and the handle portion 107 is at least partially received in the cavity 111 of the body portion 110. The thicker end of the tapered portion 106 is connected to one end of the shank portion 107, wherein the area of the bottom surface of the tapered portion 106 is larger than the area of the end surface of the shank portion 107 to which the tapered portion 106 is connected, and further the portion of the bottom surface of the tapered portion 106 beyond the end surface of the shank portion 107 forms the driving surface 130. The driving member 104 abuts against the driving surface 130 and thereby drives the pressing member 103 to move such that the pressing member 103 expands the deformable connection 120. The compression member 103 has a fluid passage 108 disposed therein, the fluid passage 108 extending through the tapered portion 106 and the shank portion 107 along the length of the compression member 103 such that fluid may flow from the threaded tube 591/light pipe 590 into the light pipe 590/threaded tube 591 (shown more clearly in FIG. 5) via the fluid passage 108.
The screw connection 105 is provided at the lower end of the second sub 109. Threaded connection 105 includes a standard threaded configuration having standard internal or external threads to mate with external or internal threads of threaded tube 591. Such an arrangement of threaded connection 105 facilitates the operator to directly select the fitting 100 according to the specifications of threaded tube 591. The threaded connection 105 has a cavity 442 (shown more clearly in fig. 4) in which the operator operates the driving member 104 to drive the pressing member 103. In the present embodiment, the threaded connection 105 has a hexagonal nut-like structure having an internal thread. In some embodiments, threaded connection 105 is cylindrical with external threads.
Fig. 2 is a cross-sectional view of the deformable coupling portion 120 and the first subsection 102 of the body portion 110 shown in fig. 1A, taken along line A-A in fig. 1A. Wherein the flexible connection part 120 is in a free state, i.e. the flexible connection part 120 is not deformed. As shown in fig. 2, each of the eight elastic segments 121 has an outer surface 224 and an inner surface 225. The outer surfaces 224 of the eight elastic segments 121 together form the outer periphery of the deformable connection 120. In an axial cross-section of the flexible joint 120, the outer surface 224 extends obliquely outward and upward relative to the direction of the axis X and then extends upward a distance in a direction parallel to the axis X of the joint 100. That is, the outer surface 224 is a circular arc surface 227 above it and a tapered surface 228 below it. Thus, the outer surfaces 224 of the eight elastic segments 121 cooperate to form the outer peripheral surface of the deformable coupling portion 120, which includes a lower tapered segment and an upper cylindrical segment. When the deformable coupling portion 120 is deformed by being spread apart by the pressing member 103, only a portion of the circular arc-shaped surface 227 of each elastic segment 121 is in contact with the inner surface of the seal ring 101, i.e., only a portion of the cylindrical segment of the upper portion of the deformable coupling portion 120 is in contact with the inner surface of the seal ring 101 (more clearly shown in fig. 5). Since the cylindrical section is distal from the connection end 122, the magnitude of deformation is also greatest for other portions of the deformable connection section 120, which is advantageous in increasing the range of the connector 100 to accommodate different sized light pipes 590.
Still referring to fig. 2, each of the eight resilient segments 121 has an inner surface 225 extending obliquely inward from the connecting end 122 toward the axis X of the fitting 100. The inner surfaces 225 of the eight spring segments 121 together define a tapered space 226 inside the deformable connection section 120, the tapered space 226 tapering from the connection end 122 toward the free end 123 and configured to receive at least a portion of the tapered section 106 of the compression member 103. The connecting end 122 of the deformable connecting section 120 is not completely connected to the first section 102, but is offset such that a portion of the connecting end 122 protrudes inwardly from the inner surface of the first section 102. This arrangement allows the deformable coupling portion 120 to pivot more easily about the coupling end 122. As can be seen from fig. 1B, the upper end of the first portion 102 of the main body 110 is provided with a plurality of gaps, which respectively correspond to the intervals between the eight elastic segments 121, so as to form the extending sections of the intervals between the eight elastic segments 121, and the deformable connection portion 120 can be deformed more easily by the arrangement of the first portion 102.
Fig. 3 is a perspective view of the second section 109 of the main body 110 and the screw connection 105 shown in fig. 1B, for more clearly showing the structure of the connection of the second section 109 and the screw connection 105. As shown in fig. 3, the lower end of the second section 109, which is connected to the threaded connection 105, is provided with a partition 317, which partition 317 is arranged transversely to the axis X to separate the interior space of the second section 109 from the interior space of the threaded connection 105. The center of the bulkhead 317 has an opening 315, the inside diameter of the opening 315 matching the size of the shank 107 of the compression member 103, such that the compression member 103 is restricted from moving only in the direction of the axis X of the joint 100 by the opening 315. Further, a holding portion 441 (shown more clearly in fig. 4) extending upward from the upper surface of the partition 317 a distance is provided around the opening 315, the holding portion 441 forming an annular guide wall guiding the moving direction of the pressing member 103. The provision of the holding portion 441 can better restrict the pressing member 103 from being deflected when moving along the axis X of the joint 100.
Four threaded holes 316 (threads not shown) are also provided around the opening 315 of the bulkhead 317. Each threaded hole 316 mates with one of the driving members 104, and the diameter of the threaded hole 316 is configured to match the size of the driving member 104. In the present embodiment, the driving member 104 is a bolt including a shaft portion 161 having an external thread, and the lower end of the shaft portion 161 has a screwing portion 162 having an outer circumferential dimension larger than that of the shaft portion 161 so as to protrude from the shaft portion 161. The driving member 104 is threadedly coupled to the threaded bore 316 of the bulkhead 317 and extends into the cavity 111 of the body portion 110. The upper end of the rod 161 of the driving member 104 abuts against the driving surface 130, and the screwing portion 162 of the driving member 104 is rotated to push the pressing member 103 to move upwards. The threaded engagement of the driver 104 with the threaded bore 316 ensures positioning of the driver 104 in a direction parallel to the axis X of the joint 100. In other embodiments, the drivers 104 may be screws, and the number of drivers 104 may be two, three … …, not limited to the four shown in the figures.
In some embodiments, the spacer 317 may also be provided inside the second section 109, or inside the threaded connection 105, so long as it is capable of cooperating with the compression member 103 and the driving member 104 as described above.
Fig. 4 is a cross-sectional view taken along line A-A in fig. 1A of the joint 100 shown in fig. 1A in a pre-installed state to better illustrate the relationship between the components. As shown in fig. 4, the sealing ring 101 encloses the deformable connection portion 120, and the sealing ring 101 also encloses and contacts the upper end of the first subsection 102 of the main body portion 110. The sealing ring 101 may or may not be attached to the outer side of the upper end of the first section 102, for example by means of a sealant. In other embodiments, the sealing ring 101 may also enclose only the deformable connection 120, even only the upper cylindrical section of the deformable connection 120.
With continued reference to fig. 4, in the pre-installed state, the compression member 103 passes from the pocket 442 of the threaded connection 105, through the pocket 111 of the body portion 110, and into the tapered space 226 of the deformable connection 120. The tapered outer surface of the tapered portion 106 of the compression member 103 conforms to the inner surface 225 of the undeformed deformable coupling portion 120. The end of the shank 107 of the compression member 103 facing away from the taper 106 protrudes into the cavity 442 of the threaded connection 105, which enables the direction of movement of the compression member 103 to be defined by the opening 315 and its surrounding retaining portion 441, preventing the compression member 103 from deflecting during movement. The upper end of the stem 161 of the driver 104 rests against the driving surface 130 with the threaded portion 162 thereof being located in the cavity 442 of the threaded connection 105. The driver 104 is able to remain stationary relative to the body portion 110 in a direction parallel to the axis X of the joint 100 by engagement with the threaded bore 316. This allows the components of the connector 100 to be positioned relative to one another in the pre-installed condition, which is advantageous in preventing the connector 100 from being scattered during transportation and noise between the components due to collisions. In other embodiments, other forms of pre-installation may be used, for example, the tapered portion 106 of the compression member 103 is positioned within the cavity 111 of the body portion 110 and does not extend into the tapered space 226 of the deformable coupling portion 120.
It should be noted that, in some embodiments, the pressing member 103 may have other shapes, so long as the pressing member 103 can move along the axis X of the joint 100 and can prop the deformable connection portion 120 open. In some embodiments, the deformable connection 120 may be other shapes as well, so long as it can be distracted by the compression member 103. Further embodiments of the deformable connection 120 will be set forth below. Furthermore, in some embodiments, the shape of the compression member 103 need not match the shape of the deformable connection section 120, as long as the compression member 103 is capable of distracting the deformable connection section 120.
Fig. 5 is a cross-sectional view taken along line A-A in fig. 1A of the joint 100 of fig. 1A when the light pipe 590 and the threaded pipe 591 are connected, for illustrating the working principle of the joint 100. As shown in fig. 5, the driving member 104 drives the pressing member 103 to move along the axis X direction of the joint 100, so that the deformable connection portion 120 is deformed, and the joint 100 is fixedly connected with the light pipe 590, and then the threaded pipe 591 is connected to the joint 100, so that the light pipe 590 is connected with the threaded pipe 591.
Specifically, the connector 100 is first connected to the light pipe 590. The operator inserts the seal ring 101 of the joint 100 in the pre-installed state into the light pipe 590 and then rotates the screw portion 162 of the driving member 104 to drive the pressing member 103 to move upward in the direction of the axis X of the joint 100. Since the lower end of the tapered portion 106 of the pressing member 103 is thicker than the upper end of the deformable connecting portion 120, as the lower end of the tapered portion 106 of the pressing member 103 goes upward into the upper end of the deformable connecting portion 120, the tapered portion 106 of the pressing member 103 presses the elastic section 121 of the deformable connecting portion 120 from the inside, so that the elastic section 121 is spread outward, i.e., pivoted outward about the connecting end 122. That is, the deformable coupling portion 120 expands outwardly as a whole. The deformable coupling portion 120 presses the upper end of the sealing ring 101 outward due to the outward expansion such that the upper end of the sealing ring 101 presses the inner wall of the light pipe 590 until the sealing ring 101 is pressed against the inner wall of the light pipe 590 by the deformable coupling portion 120. To this end, the connector 100 is securely coupled to the light pipe 590. Due to the threaded engagement of the stem portion 161 of the driver 104 with the threaded bore 316, the driver 104 is able to hold the compression member 103 in a position that expands the resilient section 121 of the deformable coupling portion 120, thereby maintaining the coupling 100 in a secure connection with the light pipe 590.
The fitting 100 is then connected to the threaded tube 591. The operator connects the threaded tube 591 with the threaded connection 105 of the fitting 100, thereby completing the connection of the light pipe 590 with the threaded tube 591.
According to the present application, the driving member 104 of the joint 100 has a driving distance H (more clearly shown in fig. 4), which is the maximum distance the driving member 104 can drive the pressing member 103 to move, and is used to limit the tapered portion 106 of the pressing member 103 from completely penetrating the deformable connecting portion 120, so as to ensure that the tapered portion 106 of the pressing member 103 can provide a continuous pressing force on the deformable connecting portion 120. Specifically, in the first embodiment, the driving distance H is the distance from the top of the screw portion 162 to the bottom of the bulkhead 317 of the driving member 104 when the driving member 104 is in the initial position in the pre-mounted state shown in fig. 4.
When it is desired to separate the light pipe 590 and the threaded tube 591, the operator first separates the threaded tube 591 from the threaded connection 105, and then, by rotating the screw portion 162 of the driving member 104 in the opposite direction, separates the driving member 104 from the driving surface 130 of the pressing member 103, which causes the pressing member 103 to no longer receive the upward driving force of the driving member 104 and to no longer abut against the deformable connection 120, which allows the elastic section 121 of the deformable connection 120 to gradually retract inwardly, causing the pressing member 103 to move downward in the direction of the axis X of the joint 100 until the deformable connection 120 returns to the pre-installed state. Thus, the sealing ring 101 is separated from the inner wall of the light pipe 590, so that the joint 100 can be taken out of the light pipe 590.
In the process of installing and detaching the joint 100, an operator does not need to use an additional tool other than the joint 100, such as a welder, etc., and the operation process of installing and detaching is simple and reliable, so that the efficiency of installing and detaching the joint 100 can be greatly improved. In addition, the connector 100 of the present application can be adapted for use with light pipes 590 of various gauges. This is because the magnitude of deformation of the deformable connection section 120 changes as the distance that the pressing member 103 moves upward in the direction of the axis X of the joint 100 changes within the range of the height of the tapered section 106. Accordingly, the connector 100 can be adapted to different sizes of light pipes 590 by properly setting the height of the tapered portion 106.
Other embodiments of the joint of the present application will be described below, which are similar to the working principle, mounting and dismounting processes of the joint 100 of the first embodiment, and thus the repetitive parts of the structure will not be specifically described.
Fig. 6A is a perspective view of a joint 600 according to a second embodiment of the present application, and fig. 6B is an exploded view of the joint 600 shown in fig. 6A. As shown in fig. 6A and 6B, the joint 600 also includes a main body portion 610, a deformable connection portion 620, a seal ring 601, a pressing member 603, and a threaded connection portion 605. The joint 600 according to the second embodiment mainly differs from the joint 100 according to the first embodiment in that it includes: the joint 600 is not provided with a driving member, the body portion 610 is not divided into two parts, the screw connection portion 605 is connected to the lower end of the pressing member 603, and the pressing member 603 has a different structure or the like.
Specifically, the pressing member 603 has a tapered portion 606 and a shank portion 607, and the shank portion 607 is cylindrical. The thicker end of the taper 606 is connected to one end of the shank 607 and is comparable to the shank 607 in thickness. That is, the area of the bottom surface of the tapered portion 106 is equal to the area of the end surface of the shank 607 that contacts the tapered portion 606. Thus, there is no driving surface between the taper 606 and the shank 607 as in the first embodiment. The cross-sectional diameter of the shank 607 matches the cross-sectional diameter of the inner surface of the body portion 610. The shank 607 has external threads on its outer surface and the body 610 has internal threads (not shown) on its inner surface, with the compression member 603 being moved and positioned relative to the body 610 by a threaded fit.
Fig. 7 is a cross-sectional view taken along line B-B of fig. 6A when the joint 600 shown in fig. 6A is in a pre-installed state, to better illustrate the relationship between the components. As shown in fig. 7, in the pre-mounted state, the tapered portion 606 of the pressing member 603 is accommodated in the deformable coupling portion 620, and a lower end of the main body portion 610 and an upper end of the screw coupling portion 605 have a certain driving distance H, which is a maximum distance that the pressing member 603 can move with respect to the main body portion 610. In the installation, the tapered portion 606 presses the deformable coupling portion 620 from the inside by rotating the pressing member 603 upward along the axis X of the joint 600, thereby pressing the upper end of the sealing ring 601 against the inner wall of the light pipe 590 until the joint 600 and the light pipe 590 are fastened together by the deformable coupling portion 620. The operation principle and process of the joint 600 for connecting the light pipe and the threaded pipe are similar to those of the joint 100 according to the first embodiment, and are not repeated herein.
Fig. 8A is a perspective view of a joint 800 according to a third embodiment of the present application, fig. 8B is an exploded view of the joint 800 shown in fig. 8A, and fig. 9 is a sectional view taken along line C-C in fig. 8A when the joint 800 shown in fig. 8A is in a pre-installed state. As shown in fig. 8A-9, the joint 800 includes a body portion 810, a deformable connection portion 820, a seal ring 801, a hold-down 803, and a threaded connection portion 805. The joint 800 according to the third embodiment is similar to the joint 600 according to the second embodiment, except that the structure of the deformable connection section 820 and the tapered section 806 of the joint 800 is different from the structure of the deformable connection section 620 and the tapered section 606 of the joint 600.
Specifically, as shown in fig. 8B and 9, the deformable connection section 820 has eight elastic segments 821. Eight resilient segments 821 are arranged spaced apart from each other about the axis X of the joint 800. Each of the eight resilient segments 821 includes a connecting end 822 connected to the body portion 810 and a free end 823 opposite the connecting end 822, the free end 823 being pivotable about the connecting end 822 toward or away from the axis X so that the eight resilient segments 821 can be folded or unfolded relative to each other. Thus, the deformable connection section 820 can contract or expand relative to the connection end 822 to change the outer peripheral dimension of the deformable connection section 820. In the expanded position of the deformable coupling 820, the deformable coupling 820 is capable of coupling the connector 800 with the light pipe 590. In other embodiments, the number of elastic segments 821 may be two, three … …, and is not limited to the eight shown in the figures. Each of the eight resilient segments 821 has an outer surface 824 and an inner surface 825. The outer surfaces 824 of the eight resilient segments 821 collectively form the outer periphery of the deformable coupling 820. The outer circumference of the deformable connection section 820 is similar in shape to the outer circumference of the deformable connection section 620 in the second embodiment.
For each elastic segment 821, its inner surface 825 extends in the same direction as the outer surface 824. Specifically, the inner and outer surfaces 825, 824 extend from the connection end 822 obliquely upward and outward away from the axis X of the joint 800, and then upward in a direction generally parallel to the axis X of the joint 800. Thus, each elastic segment 821 forms an elastic lamina. The inner surfaces 825 of the eight resilient segments 821 define a tapered space 826 within the deformable coupling portion 820, the tapered space 826 tapering from the free end 823 toward the coupling end 823 and being capable of receiving the tapered portion 806 of the hold-down 803. The tapered portion 806 is similarly shaped as the tapered space 826, and is also inverted tapered. The thinner lower end of the tapered portion 806 is connected to the cylindrical shank 807, and the area of the bottom surface of the lower end of the tapered portion 806 is equal to the area of the cross section of the shank 807. Of course, the diameter of the cross section of the shank 807 may be set smaller than the diameter of the bottom surface of the tapered portion 806.
For the joint 800, by rotating the pressing member 803 such that the tapered portion 806 moves downward in the direction of the axis X of the joint 800, the thicker upper end of the tapered portion 806 may be pressed against the deformable connecting portion 820 from the inside, so that the elastic segment 821 of the deformable connecting portion 820 is spread apart, the deformable connecting portion 820 presses the upper end of the seal ring 801 outward due to the deformation, so that the upper end of the seal ring 801 presses the inner wall of the light pipe 590 until the seal ring 801 is pressed against the inner wall of the light pipe 590 by the deformable connecting portion 820. In manufacturing the joint 800, the tapered portion 806 and the shank portion 807 are separate members, and the deformable connecting portion 820 and the body portion 810 are also separate members. In pre-installation, the shank 807 is inserted into the body portion 810, then the tapered portion 806 is welded to the shank 807, and the deformable connecting portion 820 is welded to the body portion 810 to obtain the pre-installed state shown in fig. 9.
Fig. 10A is a perspective view of a joint 1000 according to a fourth embodiment of the present application, and fig. 10B is an exploded view of the joint 1000 shown in fig. 10A. As shown in fig. 10A and 10B, the joint 1000 includes a main body portion 1010, a deformable connecting portion 1020, a seal ring 1001, a press 1003, and a screw connection portion 1005. The joint 1000 according to the fourth embodiment is similar to the joint 600 of the second embodiment except that in the fourth embodiment, the screw connection portion 1005 is directly connected to the lower end of the main body portion 1010, and the lower end of the pressing member 1003 has a prismatic portion 1050 that facilitates gripping and rotation with a tool.
Fig. 11 is a cross-sectional view taken along line D-D in fig. 10A, of the joint 1000 shown in fig. 10A in a pre-installed state, to better illustrate the relationship between the components. As shown in fig. 11, in the pre-installed state, the prismatic portion 1050 of the press 1003 is located in the threaded connection 1005 and is located at a driving distance H from the top inner surface of the threaded connection 1005, the driving distance H being the maximum distance that the press 1003 can move relative to the main body portion 1010. In installation, an operator rotates the prismatic portion 1050 of the pressing member 1003 using a tool to move the pressing member 1003 upward along the axis X direction of the joint 1000, and the tapered portion 1006 presses the deformable connection portion 1020 from the inside, so that the deformable connection portion 1020 expands outward, thereby pressing the upper end of the seal ring 1001 against the inner wall of the light pipe 590 until the joint 1000 is fastened to the light pipe 590 by the deformable connection portion 1020.
Fig. 12 is a cross-sectional view of a joint 1200 according to a fifth embodiment of the present application in a pre-installed state. As shown in fig. 12, the joint 1200 includes a main body portion 1210, a deformable connecting portion 1220, a seal ring 1201, a pressing member 1203, and a screw connecting portion 1205. The joint 1200 of the fifth embodiment is similar to the joint 1000 of the fourth embodiment, except that the deformable connection section 1220 and the tapered section 1206 of the joint 1200 of the fifth embodiment are configured as the deformable connection section 820 and the tapered section 806 of the third embodiment.
Although the application will be described with reference to the specific embodiments shown in the drawings, it should be understood that many variations of the joint of the application are possible without departing from the spirit and scope and the background of the teachings of the application. Those of ordinary skill in the art will also recognize that there are different ways to alter the details of the structure of the disclosed embodiments of the present application that fall within the spirit and scope of the present application and the claims.
Claims (7)
1. A fitting (100) for fluidly connecting a threaded tube (591) with a light pipe (590), characterized by: comprising the following steps:
a body portion (110), the body portion (110) having a cavity (111);
a deformable connection portion (120), one end of the deformable connection portion (120) being connected to the main body portion (110), the deformable connection portion (120) being capable of contracting and expanding with respect to the one end to change an outer peripheral dimension of the deformable connection portion (120);
-a sealing ring (101), the sealing ring (101) being arranged around the deformable connection (120);
a compression member (103) having a fluid passage (108) therein, the compression member (103) being at least partially received in the cavity (111) of the body portion (110), and the compression member (103) being configured to be insertable into the deformable connection portion (120) to expand the deformable connection portion (120) so that the sealing ring (101) can be compressed against an inner wall of the light pipe (590) by the deformable connection portion (120), wherein the compression member (103) is fixable relative to the body portion (110) so as to be capable of holding the deformable connection portion (120) in an expanded state, and wherein the fluid passage (108) of the compression member (103) is capable of communicating the threaded pipe (591) with the light pipe (590); and
a threaded connection (105), one end of the threaded connection (105) being connected to the main body (110) or the pressing member (103), and the threaded connection (105) having a thread matching the threaded pipe (591),
the joint (100) further comprises a plurality of driving members (104), the driving members (104) being threadedly connected to the main body portion (110), and one end of the driving member (104) being capable of abutting against a driving surface (130) of the pressing member (103) to drive the pressing member (103) to expand the deformable connecting portion (120),
a partition board (317) is arranged in the accommodating cavity (111) of the main body part (110), an opening (315) and a plurality of threaded holes (316) arranged around the opening (315) are arranged on the partition board (317), the opening (315) is sized to accommodate the pressing piece (103), and the driving piece (104) is configured to pass through the plurality of threaded holes (316) to drive the pressing piece (103).
2. The joint (100) according to claim 1, characterized in that:
the deformable connection (120) comprises a plurality of spaced apart resilient segments (121), the plurality of resilient segments (121) being arranged around an axis of the deformable connection (120), each of the plurality of resilient segments (121) comprising a connection end (122) connected with the body portion (110) and a free end (123) opposite the connection end (122), an outer surface (224) of the plurality of resilient segments (121) together forming an outer periphery of the deformable connection (120), an inner surface (225) of each of the plurality of resilient segments (121) together forming a tapered space (226), the tapered space (226) tapering from the connection end (122) of the plurality of resilient segments (121) towards the free end (123).
3. The joint (100) according to claim 2, characterized in that:
the compression element (103) has a conical portion (106) and a shank portion (107), the shank portion (107) being connected to a thicker end of the conical portion (106), the conical portion (106) being at least partially receivable in the conical space (226).
4. A joint (100) according to claim 3, characterized in that:
the body portion (110) comprises a first portion (102) and a second portion (109), the first portion (102) and the second portion (109) being connected to the deformable connection portion (120) and the threaded connection portion (105), respectively, the first portion (102) and the second portion (109) being connected to each other by threads.
5. A joint (100) according to claim 3, characterized in that:
the tapered portion (106) and the shank portion (107) together form an umbrella shape such that an end of the tapered portion (106) connected to the shank portion (107) forms the driving surface (130) at the periphery of the shank portion (107).
6. The joint (100) according to claim 5, wherein:
the opening (315) is sized to receive the shank (107) of the compression member (103).
7. The joint (100) according to claim 1, characterized in that:
the lower end of the seal ring (101) is bonded to the main body portion (110).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010522880.4A CN113775836B (en) | 2020-06-10 | 2020-06-10 | Joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010522880.4A CN113775836B (en) | 2020-06-10 | 2020-06-10 | Joint |
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| Publication Number | Publication Date |
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| CN113775836A CN113775836A (en) | 2021-12-10 |
| CN113775836B true CN113775836B (en) | 2023-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010522880.4A Active CN113775836B (en) | 2020-06-10 | 2020-06-10 | Joint |
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| CN (1) | CN113775836B (en) |
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|---|---|
| CN113775836A (en) | 2021-12-10 |
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