WO2012055356A1

WO2012055356A1 - Round tube connector

Info

Publication number: WO2012055356A1
Application number: PCT/CN2011/081349
Authority: WO
Inventors: 翟伟军; 翟秋朗
Original assignee: Zhai Weijun; Zhai Qiulang
Priority date: 2010-10-29
Filing date: 2011-10-26
Publication date: 2012-05-03
Also published as: CN102062270A; CN102062270B

Abstract

A round tube connector comprising a connector body (1A), a lock washer seat (4), o-rings (5, 6), a lock washer (9), a lock washer support (10), and a pressure sleeve (11). The connector body (1A) has an interface (1) into which a round tube (12) can be inserted for connection. The lock washer seat (4), the o-rings (5, 6), the lock washer (9), the lock washer support (10), and the pressure sleeve (11) are packaged within the interface (1). The round tube connector is characterized in that the lock washer seat (4), the lock washer (9), and the pressure sleeve (11) have the same external diameter and are axially abutting one with the next from the inside outward. In the round tube connector, the structure of the lock washer seat reduces the external diameter of the interface. The external opening of the lock washer support protrudes out of the outer surface of the pressure sleeve or is slightly indented with respect to the open portion of the interface.

Description

Round tube connector

The present invention relates to a connecting pipe member that can be used for pipe installation in liquid and gas supply and discharge systems, and more particularly to a round pipe connector. Background technique

Pipes and their installation and connection technology are widely used in daily life, such as tap water supply and discharge pipe system, gas supply pipe system, etc. Pipe connection fittings are continuously innovated and perfected with the continuous updating and application of pipe materials, traditional plating Zinc water pipes, aluminum-plastic pipes and plastic water pipes have been gradually eliminated due to their environmental protection and sanitation. In recent years, with the widespread use of stainless steel and copper tubes (more in foreign countries), many pipe joining technologies and their products, such as snap-in and plug-in fittings, have emerged, which are closer to the technical features of the present invention. Pipe fittings.

Chinese patent ZL00255292. 2 discloses a plug-in type pipe joint capable of quickly disassembling a pipe, which is provided with a sealing ring and a cone seat (in this case, a circlip support body) in the socket of the body of the joint (herein, the interface), Toothed snap ring (this is a circlip) and top cover (this is a circlip), the compression cap (here is a compression sleeve) is threaded to the port of the joint body, the outer diameter of the cone and the compression cap are not the same. Such a structure increases the outer diameter of the entire pipe joint in addition to the trouble of manufacturing the thread.

Chinese Patent ZL 200720040713. 6 discloses a plug-in self-sealing pipe joint which is placed on the step of the inner wall of the pipe joint (herein, the interface), and the positioning sleeve (here, the circlip support body) is pressed on the seal ring. Then, the internal tooth locking ring (herein, the circlip), the pipe sleeve (herein, the circlip), and the plug sleeve (herein, the pressure sleeve) are placed in sequence, wherein the plug sleeve abuts on the outer step of the sleeve. It can be seen from the above structure that since the plug sleeve abuts against the outer step of the sleeve instead of pressing against the inner tooth locking ring, when the round tube is inserted into the pipe joint, the inner tooth locking ring is not pressed and then Move, in addition, when the tube is removed, there is no outer edge of the inner tooth locking ring A reaction force presses it, most likely the inversion of the shape rather than the elastic deformation in the design, resulting in an unsatisfactory demolition effect, so the structure has obvious loopholes and inadequacies.

Chinese Patent 200820113888. X discloses a fluid pipe connecting device and its associated pipe dismantling tool, according to the claims and the schematic diagrams thereof: (1) inner tooth clasp (this is a circlip) and a push ring (this is a card) The spring support is installed in the plug sleeve (herein the press sleeve) and in the pipe joint (this is the interface). (2) The top end of the push ring is substantially flush with the sleeve or shrinks into the sleeve. It can be seen from the above that the outer diameter of the plug sleeve is larger than the outer diameter of the inner toothed snap ring and the support ring (herein, the circlip support body), and the thickness of the plug sleeve wall is increased. The outer wall does not have much necessity to enclose the inner toothed snap ring and the support ring, but instead increases the outer diameter of the pipe joint, which brings the disadvantage of occupying space. The top end of the push ring is substantially flush with the sleeve or shrinks into the sleeve, so that the top end of the push ring and the outer end of the joint leave too much space to cause dirt accumulation is not a reasonable structure.

Chinese patent 200820130605. 2 discloses a fluid pipe connection device, the content of which is basically the same as the above-mentioned 200820113888. X, the difference is that "after the pipe is connected, the top end of the tooth ring protrudes out of the plug sleeve". First of all, because the two patents are installed in the plug sleeve (herein the press sleeve) and the pipe joint ("this is the circlip") and the push ring (herein the circlip). "In the interface" is the basis of composition and structure, this point is the improvement of the invention, that is, it is not the same technical basis as the invention, so "the tip of the push ring is protruding outside the plug sleeve" cannot contain the technical features of the present invention. Moreover, there is ambiguity in this claim, for example, the relationship between the tip end of the push ring and the outer end of the fitting.

The above prior art has the following disadvantages: (1) The press sleeve encloses the circlip and the circlip support body and then encapsulates them in the interface without any need, thereby causing the outer diameter of the connector interface to be increased, so that the pipeline is laid. It is not beautiful when it is exposed, and it is not convenient when it is hidden. (2) From a reasonable point of view: the outer port of the circlip should not be flush or contracted in the press sleeve or protrude excessively beyond the press sleeve (from the Chinese patent 200820130605. 2 shows the port portion protruding from the interface ), it should be pointed out that the outer end face of the pressure sleeve is close to or slightly concave to the port portion of the interface. (3) The method of screwing the pressure sleeve is not suitable for the selection of the interface made of the thin-walled stainless steel pipe, which is complicated and costly with respect to the inner riveting seal. (4) Some compositions and arrangements are unreasonable. For example, if the inner end of the compression sleeve does not directly press the circlip but against the circlip, the circular tube can be moved outward after being inserted.

In addition, there is a long-used gas pipe joint which is also similar to the present invention, but one of which is inserted The air tube is soft material and the outer diameter is generally thin, so the outer port of the circlip protrudes from the port portion of the joint, and is suitable for pushing the air outlet by hand, which is close to or slightly opposite the outer port of the circlip of the present invention. The port portion that is recessed at the interface is suitable for pushing a circular tube that is inserted and inserted with a special tool. Both of them, because the material used for the joint body is plastic or cast copper, it is suitable to wrap the spring seat, the circlip, and the circlip in the pressure sleeve, and then insert or rive the pressure sleeve on the inner wall of the interface. In addition to increasing the outer diameter of the interface, there is no need for structural requirements, and the round pipe connector made of thin-walled stainless steel is particularly unsuitable in terms of process. Summary of the invention

In view of the shortcomings of the prior art, the object of the present invention is to provide a round pipe connector, which abandons the structure of the press sleeve wrapping spring and the spring seat, so that the outer diameters of the circlip support body, the circlip and the pressure sleeve are the same and In order to abut, the structure and function of the circlip support body are created, so that the inner wall of the interface can be selected from the inside to the outside, and the end face can be selected, so that the outer diameter of the interface can be significantly reduced, and the outer portion of the circlip can be externally removed. The port is improved to be close to or slightly concave to the interface port portion, and the sealing ring can be appropriately increased as needed to achieve a more beautiful, reasonable, and cost-saving purpose.

In order to achieve the above object, the technical solution of the present invention is: a round pipe connector, comprising a connector body, a circlip support body, a sealing ring, a circlip, a circlip, a pressure sleeve, and the connector body is provided with a round tube Inserting a connected interface, in which a plurality of radial end faces are provided in the axial direction from the inside to the outside to perform different functions, thereby generating a multi-stage end face structure form, including a difference between the two end faces and the thirteen end faces, The two end faces are: the first end face and its inner wall (referring to the axial inner wall of the first end face to the second end face) for limiting the depth of insertion of the circular tube, the second end face and its inner wall (referring to the axis of the second end face to the interface port) The inner wall is used for enclosing the circlip support body, the sealing ring, the circlip, the circlip, and the pressure sleeve; the cymbal end surface is: the first end surface and the inner wall thereof (refer to the axial inner wall of the first end surface to the second end surface) In order to limit the depth of insertion of the circular tube, the second end surface and the inner wall thereof (refer to the axial inner wall of the second end surface to the third end surface) are used for arranging the sealing ring, the third end surface and the inner wall thereof (refer to the axis of the third end surface to the interface port) Inward wall) for package circlip support , Retainer, retainer support, press-fit. The circlip support body, the circlip spring, and the pressure sleeve in the interface have the same outer diameter and are sequentially abutted in the axial direction from the inside to the outside, and the port portion of the interface is riveted in the axial wall of the tube, and the circlip is supported by the circlip The outer port is sleeved on the inner wall of the pressure sleeve; the outer port protrudes from the port portion of the pressure sleeve and is close to or slightly concave from the port portion of the interface. The following is described one by one: The connector body is a main body made of stainless steel, copper, iron, plastic, etc., which is expanded, stamped, cast, and extruded, including straight, corner, tee, four-way, special-purpose pipe joints, among which The interface is a tubular body with two or more radial end faces in the axial direction from the inside to the outside. After the inner riveting process, the pipe wall of the port portion is riveted inward, and the outer port through the riveting compression sleeve will include a circlip The support body, the circlip, the circlip and the pressure sleeve are packaged between the second end surface and the inner wall thereof, or are enclosed between the third end surface and the inner wall thereof.

The circlip support body is an important component of the invention. It comprises three forms: (1) a multifunctional joint, comprising a recessed position provided with a sealing ring; (2) being decomposed into a spring seat support and a spring seat; (3) Directly as a spring seat. Its function is mainly as the supporting body abuts the circlip, such as the forms (1) and (3); it can also be used as the end face, that is, the spring seat supports the abutting spring seat, as in the form (2), providing a self-expanding and contracting for the sealing ring Space.

When the interface of the connector is a two-stage end face, the circlip support body is appropriately selected as an integral form, for example, the inner end portion is a circular tube shape, and the inner end hole of the outer end portion is a tubular body having a large outer small conical shape, and the inner hole is larger than the inserted end. The inner tube is in contact with the second end surface, and the outer end portion is in contact with the circlip. The height of the round tube is greater than or equal to the cross-sectional diameter of the sealing ring, and the taper of the inner hole is smaller than the taper of the circlip not opened. The arrangement of the ring has the following three forms: (1) An inner seal ring is disposed on the inner wall of the round pin of the circlip support body, and a recessed position is disposed on the outer wall of the circlip support body to position an outer seal ring with the inner wall of the second end face. Sealing (as in the first embodiment); (2) appropriately increasing the axial dimension of the circlip support body on the basis of the form (1), adding one or more recessed positions on the inner wall or/and the outer wall and positioning correspondingly, The number of outer sealing rings can double the degree of sealing of the inserted circular tube and the interface (as in the second embodiment); (3) one or more recessed positions are placed on the inner wall of the circlip support body and the corresponding number is placed Inner seal ring, outside the circlip support The inner wall of the second end face to a tight fit or adhesive or welding and other seal-tight manner (as in Example III). All inner and outer sealing rings can be freely expanded and contracted in the recessed position of the circlip support body, and the inner sealing ring can be assembled and replaced.

When the interface of the connector is a two-stage end face, it is also suitable to select the circlip support body in a split form, that is, the circlip support body is decomposed into a spring block support and a spring block. The spring seat support comprises a disc-shaped, round-tube, round meson or special sealing ring, which supports the spring seat, so that the sealing ring can be freely expanded and contracted under the spring seat: a disc-shaped form (such as implementation) In the fourth example, the spring seat is supported by a tubular body and an annular body having an axial section such as a right angle. The end surface of the tubular leg abuts the second end surface, and the annular platform abuts the spring seat, and the tubular foot The outer wall is tightly fitted to the inner wall of the second end face or sealed by other means such as welding. The inner wall is matched with the outer diameter of the sealing ring; in the form of a circular tube (as in the fifth embodiment), the spring seat is supported by a circular tube, and the inner end surface of the circular tube abuts the second end surface, and the outer end surface of the circular tube abuts the spring seat. The outer wall is tightly fitted with the inner wall of the second end surface or sealed by other sealing means such as welding, and the inner wall is matched with the outer diameter of the sealing ring; the circular meson form (as in the sixth embodiment) is the spring seat supporting strength a higher round meson, the outer diameter of the round meson is slightly larger than the inner wall of the second end face, the inner diameter is larger than the inserted round tube, and the inner end surface of the round meson is slightly increased from the inner wall of the second end face close to the cross-sectional diameter of the seal ring. The small concave edge abuts, the outer end surface of the round meson abuts the spring spring seat with less strength, and the outer diameter of the sealing ring directly matches the inner wall of the second end surface; the special sealing ring form is a special sealing ring for the spring spring seat support Part or all of which includes an annular platform disposed at both axial ends of the sealing ring (as in the seventh embodiment), or a column that is evenly sandwiched between the axial center portions of the sealing ring, or a common one that is reinforced. The sealing ring doubles as a spring seat support.

When the interface of the connector is a 端面-stage end face, the circlip support body is directly selected as a spring seat, and the inner end surface of the spring seat directly abuts the third end surface, and the outer end surface of the spring seat abuts against the circlip, sealing The ring is disposed between the second end surface and the inner end surface of the spring seat (as in the eighth embodiment).

The spring seat is an annular body having an outer large inner small conical shape, the inner diameter is larger than the inserted circular tube, the inner end surface abuts the spring spring seat support or the third end surface, and the outer end surface abuts the circlip, the inner hole The taper is smaller than the taper in which the circlip is not distracted, and the spring seat separates the circlip from the seal ring, and at the same time, the space for the circlip of the circlip is widened and the space is allowed to be expanded.

The sealing ring is the main sealing member for sealing liquid and gas in the round pipe connector. It is an ordinary rubber ring when it does not need to support. It can be divided into an inner sealing ring and an outer sealing ring. The inner sealing ring is placed on the circlip bearing body. Or the inner wall or the inner wall of the circlip seat is recessed, the inner diameter is matched with the inserted circular tube; the outer sealing ring is disposed in the recessed position of the outer wall of the circlip support, and the outer diameter is matched with the inner wall of the second end surface, for the selection card When the spring seat is in the form of a round meson or a special seal ring or the interface is a 端面-level end face, there is no inner and outer seal ring. At this time, the outer diameter of the seal ring directly matches the inner wall of the interface. When the sealing ring needs to support, the two ends of the sealing ring axial direction can be made into an annular platform, or the pillars can be evenly sandwiched in the central portion of the axial direction of the sealing ring, or the strength of the ordinary sealing ring can be improved. The structure is formed into a special sealing ring. Since the sealing ring acts as a seal against the outer wall of the circular tube and the inner wall of the interface, the liquid and gas entering the circular tube cannot leak out from the interface. In addition, the shape and number of the seal ring can be based on the density The requirements for the sealing material and the degree of sealing are appropriately selected.

The circlip is a metal ring with a plurality of elastic strip-shaped teeth in the inner hole, and a small ring of closed rings on the outer edge, and the strip teeth having uniform phase in the ring are bent inward in the axial direction to be regarded as a side The outer large inner conical shape, the inner end surface of the outer ring on the outer edge abuts against the circlip support body or the spring spring seat, and the outer end surface abuts against the inner end surface of the pressure sleeve, and the inner diameter of the strip-shaped tooth of the circlip is enclosed When it is at rest, it is smaller than the outer diameter of the inserted circular tube. Under the top pressure of the circlip, the circlip taper becomes smaller than the taper of the inner hole of the circlip support or the spring seat, and the inner diameter increases and is larger than the inserted The outer diameter of the tube.

The circlip is a tubular body having a conical outer edge of the inner port, the inner diameter is larger than the inserted circular tube, and the radial position of the outer wall of the outer port can be combined with the convex step of the inner wall of the pressure sleeve, and the axial position of the outer wall The convex key may be slidably engaged with the groove on the inner wall of the pressure sleeve, the circlip support is disposed outside the circlip and the inner wall of the pressure sleeve and the pressure sleeve slide in the axial direction, and the outer port protrudes from the pressure sleeve when no internal pressure is applied The outer end surface is close to or slightly concave to the outer end surface of the interface after the riveting, the inner spring of the circlip, the conical inner port of the cone can support the circlip strip tooth to the taper close to itself, thereby disengaging the circlip The outer wall or groove of the round tube, in addition, the inner wall of the circlip support has a bearing, guiding and stabilizing effect on the inserted circular tube.

If the inserted circular tube does not wish to be disassembled or removed after inserting the interface according to the use requirement, the present invention provides another technical solution, that is, the circlip support can be eliminated, and the space is filled by the pressure sleeve, and the inner wall of the pressure sleeve is Directly mated with the inserted circular tube (as in Example IX).

The pressure sleeve is a tubular body with a small circle plane and an outer port with a circular arc at the inner port, the inner port abuts the circlip, and the outer wall of the outer port can have a convex step and a concave step of the outer wall of the outer port of the circlip support. The axial direction of the inner wall may have a groove slidingly engaging with the convex key on the outer wall of the circlip, and the circular arc port of the outer port is matched with the rivet seal in the wall of the interface port portion to form a circular arc port of the interface port portion. The pressure sleeve is pressed against the circlip, the circlip support body or the circlip, the spring spring seat and the spring spring seat to support and stabilize the circlip support.

The round pipe is a pipe material connected with the pipe connector, including stainless steel, copper pipe, plastic pipe, etc., the outer wall of which is matched with the inner wall of the first end face of the interface, and the port generally needs to be bluntly processed to facilitate insertion into the interface and avoid damage. a sealing ring, the insertion position abuts on the first end surface, and a metal groove having a higher hardness can be provided with a small groove at a corresponding position of the outer wall of the circlip tooth of the circlip after the insertion interface thereof is inserted, The spring-shaped tooth fits into the groove just after it is received. Compared with the prior art, the present invention clearly uses various forms and methods to reasonably reduce the outer diameter of the interface according to the actual needs of the use of the pipe connector, and improves the original interface 端面-stage end-end sleeve wrapping circlip and card. The structure of the spring seat proposes a new structure with a two-stage end face, which simplifies the process of expanding the tube, reduces the processing cost, and improves the appearance of the product. After the component circlip support is created or decomposed into the circlip support and the spring seat, when the interface is selected as the two-stage end face, the sealing ring is not pressed and remains expandable and retractable, and the replacement is convenient. When the axial dimension is appropriately increased, the number of the sealing rings can be increased on the inner wall and/or the outer wall, thereby increasing the degree of sealing. The circlip seat supports a variety of structural options. The circlip support and the spring seat support and the sealing of the interface tube wall have a variety of process options, which brings space for production. The port portion of the interface is treated with an internal riveting seal, which makes the process simple and increases the aesthetics while reducing the outer diameter. The outer port of the circlip spring is substantially flush with the pressure sleeve or shrinks in the pressure sleeve or protrudes from the outer sleeve, and the outer port of the circlip spring is improved to be slightly concave to the port portion of the interface, which is convenient for the external tool at the interface. The circlip is pushed to disengage the circlip from the tube wall or the groove of the inserted circular tube, so that the inserted round tube is smoothly pulled out. DRAWINGS

The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view showing a first embodiment of the present invention and a partial cross-sectional view after assembly and connection.

2 is a schematic structural view of a second embodiment of the present invention and a partial cross-sectional view after assembly and connection.

3 is a schematic structural view of a third embodiment of the present invention and a partial cross-sectional view after assembly and connection.

4 is a schematic structural view of a fourth embodiment of the present invention and a partial cross-sectional view after assembly and connection.

Figure 5 is a schematic structural view of a fifth embodiment of the present invention and a partial cross-sectional view after assembly and connection.

Figure 6 is a schematic structural view of a sixth embodiment of the present invention and a partial cross-sectional view after assembly and connection.

Figure 7 is a schematic structural view of a seventh embodiment of the present invention and a partial cross-sectional view after assembly and connection.

Figure 8 is a schematic structural view and a partial cross-sectional view of the eighth embodiment of the present invention after assembly and connection.

Figure 9 is a schematic structural view of a ninth embodiment of the present invention and a partial cross-sectional view after assembly and connection.

Figure 10 is a schematic structural view and a partial cross-sectional view showing main parts of the embodiment of the present invention. detailed description

Embodiment 1 is an embodiment in which the interface of the round pipe connector is an inner seal ring and an outer seal ring on the inner wall and the outer wall of the two-stage end face spring support body: Refer to FIG. 10, including the pipe connector body 1A, interface 1, first end face 2, second end face 3, retaining spring support 4, inner seal ring 5, outer seal ring 6, round pin 7, inner cone 8, snap spring 9, snap spring 10, pressure Set 11, round tube 12.

As shown in Fig. 1, a straight through-tube connector body 1A is vertically placed, and an interface 1 for inserting the circular tube 12 is provided upward. In the interface 1, axially from the bottom is provided for restricting the insertion depth of the circular tube 12. a first end face 2 and an inner wall thereof, and a second end face 3 for arranging the circlip support body 4, the inner seal ring 5, the outer seal ring 6, the circlip spring 9, the circlip spring 10, the pressure sleeve 11, and the inner wall thereof The outer diameter of the circlip support body 4, the circlip spring 9, and the pressure sleeve 11 are the same, the round pin 7 of the circlip support body 4 abuts on the second end face 3 of the interface 1, and the inner seal ring 5 is disposed on the circlip support body. 4, the inner wall of the circular pin 7, the outer sealing ring 6 is placed in the groove of the outer wall of the circlip support body 4, the upper port of the circlip support body 4 abuts the lower end surface of the ring of the circlip 9 and the inner cone 8 thereof The taper is smaller than the taper when the conical strip-shaped tooth of the inner hole of the retaining spring 9 is at rest. The taper of the conical lower port of the retaining spring 10 is smaller than the taper of the retaining spring 9 at rest and is lightly connected to the retaining spring 9 and sleeved on the pressing sleeve. The inner wall of the inner wall of the sleeve 11 abuts against the upper end surface of the ring of the snap spring 9 and the port tube of the interface 1 Adjacent to the arc-shaped rivet seal of the outer port of the press sleeve 11, the circlip support body 4, the retaining spring 9, and the press sleeve 11 are positioned between the second end face 3 and the outer port of the interface 1, on the circlip 10 When the port is at rest, it is close to or slightly concave to the height of the port 1 in the port portion. When the upper port of the circlip 10 is pushed by a special tool, the circlip 10 is moved downward, and the strip teeth of the circlip 9 are supported to The taper of the cone 8 in the inner portion of the circlip support 4 is released from the groove of the inserted circular tube 12. The circlip 10 and the press sleeve 11 are at a radial position of the upper port thereof, and the concave step of the circlip 10 and the convex step of the press sleeve 11 are opposite each other to restrict the upward movement of the circlip 10 in the axial direction. The groove of the pressing sleeve 11 and the convex key of the circlip spring 10 are guided in the axial direction, so that the circlip spring 10 is balancedly slid when the circlip 9 is pressed down.

The second embodiment is that the interface of the round pipe connector is an embodiment in which more than one inner seal ring and outer seal ring are disposed on the inner wall and the outer wall of the two-stage end face spring support body: Please refer to FIG. 2 and FIG. 10, including the interface 1. First end face 2, second end face 3, circlip support body 4, inner seal ring 5, inner seal ring 5A, outer seal ring 6, outer seal ring 6A, round pin 7, inner cone 8, snap spring 9, card The spring stay 10, the pressure sleeve 11, and the round tube 12. As shown in FIG. 2, the second embodiment is similar to the first embodiment except that the axial dimension of the circlip support body 4 is appropriately increased, and a recessed position is respectively added to the inner wall and the outer wall, and the corresponding inner seal ring 5A and the outer portion are respectively disposed. The seal ring 6A has the same structure and function as the first embodiment.

The third embodiment is that the interface of the round pipe connector is a two-stage end face spring support body. Only the inner seal ring is disposed on the inner wall: Please refer to FIG. 3 and FIG. 10, including the interface 1, the first end face 2, and the second end face. 3. The circlip support body 4, the inner seal ring 5, the round tube leg 7, the inner cone 8, the circlip spring 9, the circlip spring 10, the pressure sleeve 1 1 and the round tube 12.

As shown in FIG. 3, the third embodiment differs from the first embodiment in that the outer wall of the circlip support body 4 is not provided with a recessed position and the outer seal ring is not disposed, and the outer wall of the circlip support body 4 is closely spaced from the inner wall of the interface 1. Sealing is carried out in the same manner, and the rest of the structure and function are the same as in the first embodiment.

Embodiment 4 is an embodiment in which the interface of the round pipe connector is a two-stage end spring spring seat supported in a disk shape: Referring to FIG. 4, the straight pipe connector body 1A, the interface 1, the first end face 2, the first The two end faces 3, the disc-shaped spring retainer support 4, the seal ring 5, the tubular leg 6, the disc table 7, the spring block 8, the snap spring 9, the snap spring 10, the press sleeve 11, and the circular tube 12.

As shown in FIG. 4, a straight through-tube connector body 1A is vertically placed, and an interface 1 for inserting the circular tube 12 is provided upward, and an axially downwardly disposed upper end of the interface 1 is provided for restricting the insertion depth of the circular tube 12. a first end surface 2 and an inner wall thereof, and a second end surface 3 for sequentially arranging the disc-shaped circlip holder support 4, the sealing ring 5, the spring holder 8, the circlip 9, the circlip 10, and the pressure sleeve 11 and The inner wall, the disc-shaped circlip holder 4, the circlip holder 8, the circlip 9 and the sleeve 11 have substantially the same outer diameter, and the tubular leg 6 of the disc-shaped circlip holder 4 abuts against the second end of the interface 1. 3, the outer wall of the disc-shaped circlip holder 4 closely matches the inner wall of the second end face 3 of the interface 1, and the sealing ring 5 is disposed on the inner wall of the tubular leg 6 of the disc-shaped circlip support 4, and the disc-shaped circlip support The disc platform 7 on the upper end surface of the body 4 abuts against the lower end surface of the spring holder 8, and the upper end surface of the spring seat 8 abuts against the lower end surface of the ring of the snap spring 9, and the taper of the inner hole of the spring seat 8 is smaller than that of the spring 9 The taper of the inner conical strip-shaped tooth at rest, the taper of the conical lower port of the circlip 10 is smaller than the taper of the retaining spring 9 at rest and is lightly connected to the circlip 9 The sleeve is sleeved on the inner wall of the pressure sleeve 11, and the lower port of the pressure sleeve 11 abuts against the upper end surface of the spring 9 . The upper end wall of the interface 1 abuts against the arc of the upper end of the pressure sleeve 11 and the spring seat is supported. 4, the spring seat 8, the spring 9, the compression sleeve 1 1 is positioned between the second end and the port 1 port, the rest of the knot The configuration and function are the same as in the first embodiment.

The fifth embodiment is an embodiment in which the interface of the round pipe connector is a two-stage end spring retainer supported in a circular tubular form: Referring to FIG. 5, the interface 1, the first end face 2, the second end face 3, and the spring seat support 4 are included. , sealing ring 5 , lower port 6 , upper port 7 , spring seat 8 , snap spring 9 , snap spring 10 , pressure sleeve 1 1 , round tube 12 .

As shown in FIG. 5, the fifth embodiment is similar to the fourth embodiment except that the spring holder 4 is a circular tube, and the lower port 6 abuts against the second end face 3 of the interface 1, the upper port 7 and the spring seat 8 Abutting, after the circular tube 12 of the embodiment is inserted into the interface 1, the corresponding position of the outer wall of the strip-shaped tooth of the circlip 9 is displayed without the groove, and the rest of the structure and function are the same as those of the fourth embodiment.

The sixth embodiment is an embodiment in which the interface of the round pipe connector is a two-stage end spring retainer supported in the form of a circular meson: Please refer to FIG. 6, including the interface 1, the first end face 2, the second end face 3, and the spring seat support. 4. Sealing ring 5, small concave edge 6, spring spring seat 8, snap spring 9, snap spring 10, pressure sleeve 11, and round tube 12.

As shown in FIG. 6, the embodiment is characterized in that the spring holder 4 is a high-density round meson whose outer diameter is slightly larger than the inner wall of the second end face 3 of the interface 1, and the inner diameter is larger than the outer diameter of the circular tube 12, which requires A small concave edge 6 is slightly added to the inner wall of the second end face 3 of the interface 1. The lower end surface of the circular meson spring seat support 4 abuts on the added small concave edge 6, and the upper end surface and the spring seat 8 which is not high in strength are provided. Abutting, the outer diameter of the sealing ring 5 directly cooperates with the inner wall of the second end surface 3, and the rest of the structure and function are the same as those of the fourth embodiment.

Embodiment 7 is an embodiment in which the interface of the round pipe connector is a two-stage end face spring seat supported in the form of a special sealing ring: Referring to FIG. 7, the interface 1, the first end face 2, the second end face 3, and the spring seat support are included. 4. Special sealing ring 5, lower platform 6, upper platform 7, spring seat 8, spring 9, circlip 10, compression sleeve 11, round tube 12.

As shown in FIG. 7, the embodiment is characterized in that the special sealing ring 5 doubles as the spring seat support 4, that is, the central portion of the axial ends of the sealing ring section is formed into an annular lower platform 6 and an upper platform 7, and the lower platform 6 is The second end surface 3 abuts, the upper platform 7 abuts the spring seat 8, the outer diameter of the special sealing ring 5 cooperates with the inner wall of the second end surface 3, and the inner diameter cooperates with the circular tube 12, and the remaining structure and function are the same as those of the fourth embodiment. .

Embodiment 8 is an embodiment in which the interface of the round pipe connector is a 端面-stage end face: Please refer to FIG. 8 , including the interface 1 , the first end face 2 , the second end face 3 , the third end face 4 , the sealing ring 5 , and the spring seat 8 . , the spring 9 , the circlip 10 , the pressure sleeve 11 , the round tube 12 . As shown in FIG. 8, the embodiment is characterized in that the interface is a 端面-stage end face, that is, the first end face 2 for limiting the insertion depth of the circular pipe 12 and its inner wall are provided from the bottom of the interface 1 in the axial direction, and is disposed for placement. a second end face 3 of the sealing ring 5 and an inner wall thereof, and a third end face 4 for enclosing the spring seat 8, the retaining spring 9, the retaining spring 10, the pressing sleeve 11, and an inner wall thereof, the spring seat 8, and the retaining spring 9 The outer diameter of the compression sleeve 11 is the same, and the lower end surface of the spring holder 8 directly abuts against the third end surface 4. The upper end surface of the spring holder 8 abuts against the lower end surface of the spring 9 and the upper end surface of the spring 9 is pressed. The lower end surface of the sleeve 11 abuts, and the rest of the structure and function are the same as in the first embodiment.

Embodiment 9 is an embodiment in which the interface of the round pipe connector is a two-stage end face with the circlip being removed. Referring to FIG. 9, the interface 1, the first end face 2, the second end face 3, the spring seat support 4, and the special seal are included. Ring 5, lower platform 6, upper platform 7, spring seat 8, snap spring 9, pressure sleeve 11, round tube 12.

As shown in FIG. 9, in the embodiment, the circlip 10 is removed in the structure of the seventh embodiment, and then the space of the original circlip 10 is filled by the pressing sleeve 11, so that the inner wall of the pressing sleeve 11 directly intersects the circular tube 12. The sliding fit eliminates the circlip support 10, so there is no disassembly function. In addition, since the seal ring does not need to be replaced, the present embodiment selects the special seal ring 5 as the function of the spring block support 4, and of course, it is also possible to select non-special The structure of the seal ring or the end face of the crucible is the same as that of the seventh embodiment.

Although the present invention has been described by the above embodiments, the present invention is not limited to the embodiments disclosed above, but various modifications and equivalent combinations depending on the nature of the embodiments are intended.

Claims

A circular tube connector, comprising a connector body, a circlip support body, a sealing ring, a circlip, a circlip, and a pressure sleeve, wherein the connector body is provided with an interface for inserting and connecting the circular tube, the circlip support The body, the sealing ring, the circlip, the circlip, and the pressure sleeve are encapsulated in the interface, wherein the circlip support body, the circlip, and the pressure sleeve have the same outer diameter and are sequentially arranged from the inside to the outside in the axial direction. Abut.

2. A round pipe connector, comprising a connector body, a circlip support body, a sealing ring, a circlip, and a pressure sleeve, wherein the connector body is provided with an interface for inserting and connecting the circular tube, the circlip support body and the sealing ring The circlip support and the pressure sleeve are encapsulated in the interface, wherein the circlip support body, the circlip spring, and the pressure sleeve have the same outer diameter and are sequentially abutted in the axial direction from the inside to the outside.

3. The round tube connector of claim 1 wherein the outer port of the retaining spring projects from the outer end surface of the compression sleeve and is adjacent or slightly concave to the port portion of the interface.

The round pipe connector according to claim 1 or 2, wherein the circlip support body is a tubular body, the tubular body includes an inner end portion and an outer end portion, and the inner end portion has a circular tube shape. The inner end of the outer end portion has an outer large inner small conical shape, the inner end end surface abuts the radial end surface of the interface, and the outer end end surface abuts against the circlip, and is provided on the inner wall or/and the outer wall of the circlip support body. Place the recessed position of the seal.

The round pipe connector according to claim 1 or 2, wherein: a first end face and an inner wall thereof for restricting the insertion depth of the circular pipe are provided in the interface from the inside to the outside in the axial direction, and The circlip support body, the sealing ring, the circlip, the circlip, the second end surface of the pressure sleeve and the inner wall thereof are disposed, and the circlip support body is decomposed into a spring seat support and a spring seat, and the spring seat supports a spring seat, the spring seat abuts the circlip.

The round pipe connector according to claim 1 or 2, wherein the circlip support body directly abuts the circlip as a spring holder.

The round pipe connector according to claim 5, wherein: the spring seat is supported by an annular body having a tubular leg and an annular platform, such as a right angle, and an end face of the tubular leg and the second The end surface abuts, the ring platform abuts the spring seat, the outer wall of the tubular leg closely matches the inner wall of the second end surface, and the inner wall cooperates with the outer diameter of the sealing ring.

The round pipe connector according to claim 5, wherein: the spring spring seat is supported in a circular tubular shape, one end of the circular pipe abuts against the second end surface, and the other end abuts the spring spring seat, the round pipe The outer wall closely matches the inner wall of the second end face, and the inner wall cooperates with the outer diameter of the seal ring.

9. The round pipe connector according to claim 5, wherein: the spring holder supports a circular meson shape, the outer diameter of the circular meson is larger than the inner diameter of the inner wall of the second end surface, and is close to the sealing at the second end surface. A small concave edge is added to the inner wall of the ring cross-sectional diameter, the inner end surface of the round meson abuts the small concave edge, the outer end surface of the circular meson abuts the spring seat, and the sealing ring is disposed on the second end surface and the inner end surface of the circular meson The outer diameter of the second end directly matches the inner wall of the second end face.

The round pipe connector according to claim 5, wherein: the spring holder is supported as part or all of the sealing ring, and includes an annular platform disposed at both axial ends of the sealing ring, Alternatively, the pillars that are evenly sandwiched between the axial ends of the seal ring or the reinforcing seals that are also supported by the spring holders are abutted, and the axial ends of the seal ring are respectively in contact with the second end face and the spring seat.