A quick-insert component

Abstract

A quick-insert component is used for quickly connecting a pipe joint and a connecting pipe orifice of a pipe. The pipe joint includes an insertion pipe that is fittingly inserted into the connecting pipe orifice at one longitudinal inner end. One longitudinal outer end of the insertion pipe protrudes outward to form a pressing ring with an outer diameter larger than the inner diameter of the connecting pipe. It includes: an inner insertion pipe fittingly inserted into the connecting pipe orifice, a part of the inner wall of the pipe radially contracts outward to form a first stop surface longitudinally facing the inner insertion pipe; at least one second sealing ring sleeved in the pipe to provide longitudinal sealing between the pipe and the insertion pipe, which is located between the first stop surface and the inner insertion pipe; and a locking mechanism that can prevent the pressing ring from longitudinally protruding outward in the locked state and can allow the pressing ring to longitudinally protrude outward in the unlocked state.

Description

Technical Field

[0001] This application relates to the technical field of sensors, and particularly to a quick-insert component. Background Art

[0002] A pressure sensor is used to measure the pressure of a pressure medium in a container, and its pressure-sensitive element is usually installed on a circuit board and a substrate. The substrate and the pressure interface are not integrated, so it is necessary to have a reliable seal between it and the housing to prevent medium leakage. On the other hand, when connecting the pressure sensor to the container, a sealing connection can be made between the pressure interface and the rigid pipe orifice through a sealing ring; when connecting to a connecting hose, a quick-insert component is required for connection.

[0003] The statements in this section only provide background information related to this application and may not constitute prior art. Summary of the Invention

[0004] In view of the deficiencies of the prior art, this application provides a quick-insert component to provide a quick connection between a connecting pipe joint and a pipe.

[0005] To achieve the above object, this application provides a quick-insert component as follows. It is used to connect a connecting pipe joint and a connecting orifice of a pipe. The pipe joint includes an insertion pipe that is longitudinally and inwardly inserted into the connecting orifice. The longitudinally outer end of the insertion pipe bulges outwards to form a pressing ring with an outer diameter larger than the inner diameter of the connecting pipe. It includes:

[0006] An inner insertion pipe that is inserted into the connecting orifice in a matching manner, and a part of the inner wall of the pipe contracts radially outwards to form a first stop surface that is longitudinally opposite to the inner insertion pipe;

[0007] At least one second sealing ring sleeved in the pipe to provide longitudinal sealing between the pipe and the insertion pipe, which is located between the first stop surface and the inner insertion pipe;

[0008] And a locking mechanism that can prevent the pressing ring from longitudinally protruding outwards in the locked state and can allow the pressing ring to longitudinally protrude outwards in the unlocked state.

[0009] Preferably, the locking mechanism includes:

[0010] A locking seat penetrated longitudinally outwards by the insertion pipe, which is provided with a receiving cavity, is connected to the outer end of the inner insertion pipe or the pipe, and the inner insertion pipe is longitudinally inserted into the pipe in a non-disengaging manner;

[0011] And a locking component at least partially disposed in the receiving cavity and capable of lateral movement. When this part is in the first limit position, it longitudinally blocks the pressing ring; when this part is in the second limit position, it longitudinally releases the pressing ring.

[0012] Preferably, the locking component includes:

[0013] A first locking member slidably disposed on the locking base in the transverse plane, which includes a first axial stop and two side beams extending forward and backward and spaced apart from each other left and right and facing each other. An elastic piece is fixedly disposed on the front end of the side beam and can abut forward against the locking base; the rear end of the side beam extends out of the accommodating cavity and is fixedly connected to a first pressing portion; the middle portions of the side beam in the front and rear directions are fixedly connected to one end of a flexible stop, and the other end of the flexible stop extends obliquely radially inward in the longitudinal direction to the longitudinal insertion path of the pressing ring;

[0014] And a second locking member slidably disposed on the first locking member in the transverse plane, including a second axial stop and a second pressing portion fixedly located inside and outside the accommodating cavity respectively in the front and rear directions; the other end of the flexible stop is located on the front and rear movement path of the second axial stop. When the other end of the flexible stop is pushed inward in the longitudinal direction by the pressing ring from the second axial stop, the second locking member can move forward relative to the first locking member from a rear limit position to a front limit position; when the second locking member is located at the front limit position relative to the first locking member, the second axial stop is located on the longitudinal withdrawal path of the pressing ring, and when the first locking member is located at the rear limit position, the second axial stop disengages from the longitudinal withdrawal path of the pressing ring.

[0015] Preferably, one end of the radial inner side of the first axial stop and / or the second axial stop extends obliquely inward in the longitudinal direction, and the projection of the first axial stop and / or the second axial stop in the transverse plane is crescent-shaped.

[0016] Preferably, a pulling portion adapted to be pinched by a human finger is provided on each of the left and right sides of the second pressing portion; longitudinal corrugations are provided on the left and right outer sides of the pulling portion.

[0017] Preferably, the locking and blocking assembly further includes a blocking structure for providing resistance when the second locking member moves forward and backward relative to the first locking member.

[0018] Preferably, the blocking structure includes at least one arcuate strip. The front and rear ends of at least one first connecting beam are fixedly connected to the second axial stop and the second pressing portion respectively. The middle portion of the arcuate strip arches toward one side of the first connecting beam and forms a sliding portion limiting groove with the first connecting beam. A sliding portion fixedly connected to the side beam extends longitudinally into the sliding portion limiting groove, and the arched portion of the arcuate strip is located on the front and rear movement path of the sliding portion.

[0019] Preferably, the second axial stop and the second pressing portion are further fixedly connected by a second connecting beam extending in the front and rear directions. A second guiding groove is provided on the second connecting beam. The first locking member further includes a guiding block fixed to the side beam, and the guiding block extends longitudinally into the second guiding groove.

[0020] Preferably, a diameter-expanded portion is formed at a longitudinally outer end of the outer wall of the inner insertion tube, and the inner wall of the tube contracts outward to form a second stop surface longitudinally opposite to the diameter-expanded portion; a sleeve is disposed between the inner insertion tube and the tube wall, and the sleeve is located longitudinally outside the second stop surface.

[0021] Preferably, the inner diameter of the sleeve is larger than the outer diameter of the inner insertion tube, and the outer diameter of the sleeve is smaller than the inner diameter of the longitudinally outer end of the tube of the diameter-expanded portion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is an exploded view of the pressure sensor according to the first preferred embodiment of the present application;

[0023] Figure 2 is a cross-sectional view of the pressure sensor according to the first preferred embodiment of the present application;

[0024] Figure 3 is a perspective view of the pressure sensing assembly according to the first preferred embodiment of the present application;

[0025] Figure 4 is a cross-sectional view of the pressure sensing assembly according to the first preferred embodiment of the present application;

[0026] Figure 5 is a perspective view of the locking and blocking assembly according to the first preferred embodiment of the present application;

[0027] Figure 6 is a longitudinal end view of the locking and blocking assembly according to the first preferred embodiment of the present application;

[0028] Figure 7 is a cross-sectional view of the quick-insertion assembly according to the first preferred embodiment of the present application in an uninstalled state;

[0029] Figure 8 is a cross-sectional view of the quick-insertion assembly according to the first preferred embodiment of the present application in an initial installation state;

[0030] Figure 9 is a top view of the combination of the pressure sensor and two pipe joints according to the second preferred embodiment of the present application;

[0031] Figure 10 is the combination of the pressure sensor and two pipe joints according to the second preferred embodiment of the present application along Figure 9 the cross-sectional view taken along A-A shown in;

[0032] Figure 11 is the combination of the pressure sensor and two pipe joints according to the second preferred embodiment of the present application along Figure 9 the cross-sectional view taken along B-B shown in;

[0033] Figure 12 is a perspective view of the combination of the pressure sensor and two pipe joints according to the second preferred embodiment of the present application;

[0034] Description of reference numerals: 1011, first stop surface; 1012, second stop surface; 101, tube; 1021, second card hole; 102, connecting seat; 103, support surface; 104, first sealing groove; 105, first sealing groove; 106, flange; 107, medium hole; 108, first guiding groove; 109, first card hole; 112, sealant; 1, seat body; 201, vertical part; 202, crimping edge; 203, embedding part; 2, metal cylinder shell; 301, first sealing ring; 302, first sealing ring; 3, sealing assembly; 401, substrate; 402, first circumferential positioning part; 403, lower reinforcing plate; 404, circuit board; 405, connecting plate; 406, upper circuit board; 407, pin connection hole; 408, pressure sensitive element; 409, upper reinforcing plate; 411, conductive elastic piece; 412, electronic component; 413, surrounding frame; 4, pressure sensing assembly; 500, pin; 501, cylindrical part; 502, plugging part; 503, end part; 504, thick part; 505, crimping surface; 506, support part; 507, surrounding cavity; 508, positioning column; 5, terminal; 601, second sealing ring; 602, second sealing ring; 6031, weak connecting part; 603, sleeve; 604, inner inserted tube; 605, diameter-expanded part; 606, buckle; 6070, accommodating cavity; 6071, outer wall; 6072, inner end part; 6073, outer end part; 6074, side socket; 6075, edge; 6076, through port; 607, locking seat; 6080, second axial stop piece; 6081, pulling part; 6082, second pressing part; 6083, first connecting beam; 6084, bow-shaped strip; 6085, sliding part limiting groove; 6086, second connecting beam; 6087, surrounding opening; 6088, second guiding groove; 608, second locking part; 6090, first axial stop piece; 6091, side beam; 6092, elastic piece; 6093, guiding part; 6094, flexible stop piece; 6095, radially outer end; 6096, radially inner end; 6097, sliding part; 6098, first pressing part; 609, first locking part; 701, inserting tube; 702, pressing ring; 703, polygonal part; 704, external thread connecting part; 7, pipe joint; 801, fourth sealing ring; 802, third sealing ring; 804, inner inserted tube; 8070, accommodating cavity; 8071, connecting part; 8072, inner end part; 8073, outer end part; 8074, side socket; 8075, guiding part; 8076, dividing column; 807, locking seat; 8081, anti-detachment part; 8082, second pressing part; 8083, side beam; 8084, smooth contact surface; 8085, third stop surface; 8086, guiding rib; 808, third locking part. Detailed implementation mode

[0035] The technical solution of the present application will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are exemplary and are only used to explain the present application, and should not be construed as a limitation to the present application. In the following description, the same reference numerals are used to represent the same or equivalent elements, and repeated descriptions are omitted.

[0036] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0037] In addition, the terms "mounted", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0038] It should also be further understood that the term "and / or" used in the specification of the present application and the corresponding claims refers to any combination of one or more of the listed items and all possible combinations.

[0039] Such as Figures 1 to 4As shown. In the first embodiment of the present application, the pressure sensor includes a seat body 1, a metal cylindrical shell 2, terminal buttons 5, a pressure sensing component 4, and a sealing component 3. The seat body 1 is made of plastic and includes a longitudinal tube 101 and a connecting seat 102 fixed to the outer wall of the middle part of the tube 101. A connecting pipe orifice is provided at each of the longitudinal two ends of the tube 101. A medium hole 107 communicating with the inside of the tube 101 is provided on the connecting seat 102. At least one circle of first sealing grooves, such as concentric first sealing grooves 104 and first sealing grooves 105, are provided on the upper end surface of the connecting seat 102. The edge of the medium hole 107 protrudes upward relatively to form a flange 106. The sealing component 3 includes a first sealing ring 301 arranged in the first sealing groove 104 and a first sealing ring 302 arranged in the first sealing groove 105. A supporting surface 103 for the upper end terminal button 5 is formed outside the first sealing groove. The supporting surface 103 and the lower end of the terminal button 5 can be set to be annular. The axial direction of the metal cylindrical shell 2 is arranged horizontally. One of its horizontal ends (shown as the lower end in the figure) is fixed to the connecting seat 102, and the other horizontal end is rolled inward to form a crimping edge 202 (shown as the upper end in the figure). The terminal button 5, the metal cylindrical shell 2, and the connecting seat 102 together enclose an installation cavity (not marked). The terminal button 5 may include an end portion 503, a plugging portion 502 and a cylindrical portion 501 extending upward and downward respectively from the outer edge of the end portion 503. The lower end of the pin 500 is fixedly passed through the end portion 503 and extends into the installation cavity. A second clamping hole 1021 may be provided on the side wall of the end of the connecting seat 102 away from the metal cylindrical shell 2 to facilitate fixation with an external device.

[0040] The crimping edge 202 presses the terminal button 5 tightly on the connecting seat 102. Specifically, the outer diameter of the lower side part of the cylindrical portion 501 expands relatively to form a thick portion 504, and an upward pressing surface 505 is formed at the upper end of the thick portion 504. The crimping edge 202 presses tightly on the pressing surface 505 on one side of the seat body 1. A sealing glue 112 may be provided between the vertical portion 201 and the tube 101. One end of the metal cylindrical shell 2 close to the seat body 1 extends inward to form an embedding portion 203 embedded in the seat body 1.

[0041] The pressure sensing component 4 is disposed in the installation cavity and includes a substrate 401, a pressure sensitive element 408, and a circuit board 404. The substrate 401 is pressed by the terminal 5 against the sealing component 3 on one side of the seat body 1, and a pressure hole communicating with the medium hole 107 is provided in the middle thereof. The substrate 401 can be made of a metal material or a ceramic material. Preferably, the substrate 401 is made of a ceramic material. A plurality of first circumferential positioning portions 402 can be provided on the periphery of the substrate 401, and a plurality of positioning posts 508 that are inserted and matched with the lower end of the thick portion 504 are provided. The pressure sensitive element 408 is fixed on the substrate 401, and its first pressure sensing surface seals one end of the pressure hole away from the tube 101. The circuit board 404 is fixed on the surface of the substrate 401 away from the tube 101, and a window for accommodating the substrate 401 is provided thereon, and it is electrically connected to the pressure sensitive element 408. Electronic components 412 such as conditioning chips are provided on the circuit board 404. A surrounding frame 413 can also be adhered to the upper surface of the circuit board 404. The surrounding frame 413 surrounds the periphery of the pressure sensitive element 408, and a protective gel covering the outside of the pressure sensitive element 408 is filled in the surrounding frame 413. Among them, the pressure sensitive element 408 is preferably a MEMS chip. In some other embodiments, it can also be other types of pressure sensitive elements such as a resistance strain gauge or a capacitive strain gauge.

[0042] Among them, the lower end of the pin 500 passes through and is welded to the pin connection hole 407 of an upper reinforcing plate 409. An upper circuit board 406 is fixed on the surface of the upper reinforcing plate 409 facing the circuit board 404. The inner side of the end portion 503 can protrude downward to form a supporting portion 506 for supporting the upper reinforcing plate 409. A surrounding cavity 507 can be formed in the supporting portion 506, and a sealing adhesive can be filled in the surrounding cavity 507. The lower end of the pin 500 is electrically connected to the circuit board 404 through the upper circuit board 406 and the connecting plate 405. The circuit board 404, the upper circuit board 406, and the connecting plate 405 can be flexible circuit boards. When the circuit board 404 is a flexible circuit board, it can be fixed on the upper end surface of the lower reinforcing plate 403, and the lower reinforcing plate 403 is fixed on the upper end surface of the substrate 401. In order to ground the metal cylinder shell 2 to reduce electromagnetic interference, a grounded conductive elastic sheet 411 is electrically connected to the circuit board 404, and the conductive elastic sheet 411 presses against the inner wall of the vertical portion 201.

[0043] For the convenience of connection with the pipe joint 7, the pressure sensor of this embodiment may further include two connection quick-insert components that are correspondingly provided on two connection pipe orifices. Among them, the pipe joint 7 includes an insertion pipe 701 whose longitudinal inner end is inserted into the connection pipe orifice in a matching manner. The longitudinal outer end of the insertion pipe 701 protrudes outward to form a pressing ring 702 whose outer diameter is larger than the inner diameter of the connection pipe. The axial outer end of the pressing ring insertion pipe 701 is further provided with a polygonal portion 703 that is convenient for rotary clamping, and an external thread connection portion 704 can be provided at the longitudinal outer end of the polygonal portion 703.

[0044] Please refer to Figures 5 to 6 . The quick-insert component of this embodiment includes an inner insertion tube 604, a second sealing ring 601, a second sealing ring 602, and a locking and blocking mechanism. Among them, the inner insertion tube 604 is fittingly inserted into the connecting pipe orifice. A part of the inner wall of the pipe 101 contracts radially outward to form a first stop surface 1011 that is longitudinally opposite to the inner insertion tube 604. The second sealing ring 601 and the second sealing ring 602 are sleeved in the pipe 101 to provide longitudinal sealing between the pipe 101 and the insertion connecting pipe 701, and are longitudinally restricted between the first stop surface 1011 and the inner end surface of the first sealing groove 104.

[0045] The locking and blocking mechanism can change between a locked state and an unlocked state. In the locked state, it can prevent the pressing ring 702 from moving out longitudinally outward, and in the unlocked state, it can allow the pressing ring 702 to move out longitudinally outward. The locking and blocking mechanism should at least include a locking seat 607 and a locking and blocking component (not marked). The locking seat 607 is longitudinally penetrated outward by the insertion connecting pipe 701, and is provided with a receiving cavity 6070 thereon, and is fixed to the outer end of the inner insertion tube 604. In some other embodiments, the locking seat 607 can also be integrally fixed to the longitudinal outer end of the pipe 101. The inner insertion tube 604 is longitudinally anti-disengagement inserted into the pipe 101. For example, it can be snap-connected to the pipe 101 or blocked by the pressing ring 702 on the longitudinal outer side. At least a part of the locking and blocking component (which will be specifically described below) is disposed in the receiving cavity 6070 and can move laterally. When this part is in the first limit position, it longitudinally blocks the pressing ring 702; when this part is in the second limit position, it longitudinally releases the pressing ring 702 (withdraws out of the outer movement path of the pressing ring 702).

[0046] Among them, the locking seat 607 can include an outer wall 6071 axially arranged longitudinally. The longitudinal inner end of the outer wall 6071 is fixed with an inner end portion 6072, and the longitudinal outer end of the outer wall 6071 is fixed with an outer end portion 6073. The outer wall 6071, the inner end portion 6072, and the outer end portion 6073 enclose the receiving cavity 6070 with the insertion connecting pipe 701. The outer wall 6071 can be provided with a side socket 6074 through which the above-mentioned part of the locking and blocking component can be inserted into the receiving cavity 6070. The inner end portion 6072 and the outer end portion 6073 are provided with through openings 6076 through which the pressing ring 702 can move longitudinally.

[0047] In this embodiment, the locking assembly may include a first locking member 609 and a second locking member 608. The first locking member 609 is slidably disposed on the locking seat 607 in a transverse plane, and includes a first axial blocking piece 6090 and two side beams 6091 extending forward and backward and spaced apart from each other. An elastic piece 6092 that can be supported forward on the locking seat 607 is fixedly disposed on the front end of the side beam 6091. The rear end of the side beam 6091 extends out of the accommodating cavity 6070 and is fixedly connected to a first pressing portion 6098. The front and rear middle parts of the side beam 6091 are fixedly connected to one end of a flexible blocking piece 6094. The radially outer end 6095 of the flexible blocking piece 6094 extends in a longitudinally inwardly inclined manner relative to the radially inner end 6096 thereof to the longitudinal inward insertion path of the pressure ring 702.

[0048] The second locking member 608 is slidably arranged on the first locking member 609 in the transverse plane, and includes a second axial baffle 6080 and a second pressing portion 6082 fixedly located inside and outside the accommodating chambers 6070 and 8070, respectively. The other end of the flexible baffle 6094 is located on the front-to-back moving path of the second axial baffle 6080, and its main function is to block the forward movement of the second axial baffle 6080 in the front-to-back direction when not connected to the pipe joint 7; when connected to the pipe joint 7, the pressure ring 702 is inserted into the connecting pipe mouth in the longitudinal direction and the flexible baffle 6094 is pushed away, and at this time, the second locking member 608 can be pressed to prevent the second axial baffle 6080 and the first axial baffle 6090 from escaping outward in the longitudinal direction from the front and back sides, respectively. Therefore, when the plug-in tube 701 of the pipe connector 7 is inserted into the connecting pipe mouth, the pressing ring 702 pushes the flexible baffle 6094 to both sides, and the longitudinal inner end of the pressing ring 702 stops at the outer end of the inner tube 604, the flexible baffle 6094 should not detach from the pressing ring 702, that is, the flexible baffle 6094 should have a suitable longitudinal length after being squeezed by the pressing ring 702. At this time, the distance between the longitudinal inner end of the flexible baffle 6094 and the outer end of the inner tube 604 is preferably smaller than the longitudinal thickness of the pressing ring 702.

[0049] When the other end of the flexible flap 6094 is pushed away from the second axial flap 6080 by the pressing ring 702 towards the longitudinal inner side, the second locking member 608 can move forward from a rear limit position to a front limit position relative to the first locking member 609. When the second locking member 608 is in the front limit position relative to the first locking member 609, the second axial flap 6080 is located on the longitudinal outward withdrawal path of the pressing ring 702. When the first locking member 609 is in the rear limit position, the second axial flap 6080 disengages from the longitudinal outward withdrawal path of the pressing ring 702. In some other embodiments, the radially inner end of the first axial flap 6090 and / or the second axial flap 6080 can be inclined and extended towards the longitudinal inner side to improve the longitudinal stiffness of the first axial flap 6090 and / or the second axial flap 6080. To better adapt to the outer contour of the pressing ring 702, the projection of the first axial flap 6090 and / or the second axial flap 6080 on the transverse plane is crescent-shaped. On the left and right sides of the second pressing portion 6082, there can be respectively provided pulling portions 6081 suitable for being pinched by a human finger. For example, longitudinal extending corrugations can be provided on the left and right outer sides of the pulling portion 6081 to increase the frictional force when the finger pinches, and it is also convenient for clamping with fingernails.

[0050] In some other embodiments, preferably, the locking and blocking assembly further includes a blocking structure for providing resistance when the second locking member 608 moves back and forth relative to the first locking member 609. Specifically, the blocking structure includes at least one arcuate strip 6084. The front and rear ends of at least one first connecting beam 6083 are fixedly connected to the second axial flap 6080 and the second pressing portion 6082 respectively. The middle part of the arcuate strip 6084 arches towards one side of the first connecting beam 6083 and forms a sliding portion limiting groove 6085 with the first connecting beam 6083. A sliding portion 6097 fixedly connected to the side beam 6091 extends longitudinally into the sliding portion limiting groove 6085, and the arched portion of the arcuate strip 6084 is located on the front and rear movement path of the sliding portion 6097.

[0051] The second axial flap 6080 and the second pressing portion 6082 are also fixedly connected by a second connecting beam 6086 extending in the front and rear direction. A second guiding groove 6088 is provided on the second connecting beam 6086. The first locking member 609 further includes a guiding block (not shown) fixedly connected to the side beam 6091, and the guiding block extends longitudinally into the second guiding groove 6088. Among them, preferably, a guiding portion 6093 that presses towards the left and right inner sides against the first connecting beam 6083 is provided at the rear end of the side beam 6091. A surrounding opening 6087 is formed among the second connecting beam 6086, the first connecting beam 6083, the second axial flap 6080 and the second pressing portion 6082, and the arcuate strip 6084 is arranged in the surrounding opening 6087.

[0052] Please refer to Figure 7 、 Figure 8 ,Figure 7 The structure of the quick-insert component of this embodiment is shown when it is not installed on the connection pipe orifice. Figure 8 The initial state when it is installed in the pipe 101 is shown. Compared with the quick-insert component after installation, for the quick-insert component when not installed, its second sealing rings 601 and 602 are sleeved in a sleeve 603. The sleeve 603 is coaxially arranged with the inner insertion pipe 604, is located on the longitudinal inner side of the inner insertion pipe 604, and is integrally connected with one longitudinal inner end of the inner insertion pipe 604 through a weak connection part 6031. An expanded diameter part 605 is formed at one longitudinal outer end of the outer wall of the inner insertion pipe 604, and the inner wall of the pipe 101 contracts outward to form a second stop surface 1012 longitudinally opposite to the expanded diameter part 605. A buckle 606 is arranged on the outer wall of the expanded diameter part 605, and a first card hole 109 is correspondingly arranged on the connection pipe orifice. During installation, the quick-insert component is pushed longitudinally inward into the connection pipe orifice, and the sleeve 603 is blocked by the second stop surface 1012; under sufficient thrust, the weak connection part 6031 breaks; when continuing to push in, the sleeve 603 then disengages from the inner insertion pipe 604 longitudinally outward and is pushed and received in the annular accommodation cavity formed between the outer wall of the inner insertion pipe 604, the longitudinal inner end surface of the expanded diameter part 605 and the inner wall of the connection pipe orifice. During this process, the buckle 606 is clamped in the first card hole 109 to prevent the quick-insert component from disengaging from the connection pipe orifice.

[0053] Among them, in order to make the pipe 101 have sufficient strength, its pipe wall cannot be too thin. When the pipe wall is relatively thick, it is difficult for the buckle 606 to deform such a large radial deformation amount during buckling. Therefore, a first guiding groove 108 extending longitudinally to a circumferential end of the first card hole 109 can be arranged on the longitudinal outer side of the first card hole 109. In this way, when clamping, the required radial deformation amount of the buckle 606 can deduct the depth of the first guiding groove 108, and at the same time, it can be avoided that the thickness of the pipe 101 corresponding to the longitudinal outer side of the buckle 606 is the same as the wall thickness of the pipe 101. However, since the thickness of the pipe 101 at the position of the first guiding groove 108 is reduced, there is room for further improvement.

[0054] Please refer to Figures 9 to 12 . In the second embodiment of the present application, the quick-insert component includes an inner insertion pipe 804, second sealing rings 801, 802 and a locking and blocking mechanism. Among them, the inner insertion pipe 804 is inserted into the connection pipe orifice in a mating manner. A part of the inner wall of the pipe 101 contracts radially outward to form a first stop surface 1011 longitudinally opposite to the inner insertion pipe 804. The second sealing rings 801 and 802 are sleeved in the pipe 101 to longitudinally seal between the pipe 101 and the insertion pipe 701, and are longitudinally limited between the first stop surface 1011 and the inner end surface of the first sealing groove 104.

[0055] The locking and blocking mechanism can change between a locked state and an unlocked state. In the locked state, it can prevent the pressing ring 702 from slipping out longitudinally outward, and in the unlocked state, it can allow the pressing ring 702 to slip out longitudinally outward. The locking and blocking mechanism should at least include a locking seat 807 and a locking and blocking component (not marked). The locking seat 807 is longitudinally penetrated outward by the inserted pipe 701, and is provided with a receiving cavity 8070 thereon. It is fixedly connected to the outer end of the pipe 101, so that the longitudinal outer part of the pipe 101 has the same wall thickness, that is, it will not have the drawback that only part of the pipe 101 is thinned as in the first embodiment for setting the first guiding groove 108. In some other embodiments, preferably, the locking seat 807 can also be fixed to the longitudinal outer end of the inner inserted pipe 804. The inner inserted pipe 804 is longitudinally anti-detachingly inserted into the pipe 101. At least a part of the locking and blocking component is arranged in the receiving cavity 8070 and can move laterally. When this part is in the first limiting position, it longitudinally blocks the pressing ring 702; when this part is in the second limiting position, it longitudinally releases the pressing ring 702 (withdraws out of the outer movement path of the pressing ring 702). The locking and blocking component includes a third locking member 808 slidably arranged on the locking seat 607 in the transverse plane. The third locking member 808 includes two side beams 8083 extending forward and facing each other left and right, and a side socket 8074 is formed between the two side beams 8083. The rear end of the third locking member 808 is fixedly connected to a second pressing portion 8082. A separating structure (not marked) is arranged on the locking seat 607 to push the two side beams 8083 left and right when they move forward.

[0056] The separating structure includes two separating columns 8076. The separating columns 8076 extend outward to the left and right to the forward movement path of the side beams 8083. A smooth contact surface 8084 is arranged at the connection of the front side wall and the left and right inner side walls of the side beams 8083. The corresponding connection of the rear side wall and the left and right outer side walls of the separating columns 8076 is provided with an inclined surface or a smooth surface. The two side beams 8083 are deformed and opened under the action of the separating columns 8076, so as to withdraw out of the outer movement path of the pressing ring 702. In some other embodiments, the two separating columns 8076 can also form a separating column, and two of the above inclined surfaces or smooth surfaces are correspondingly arranged on the left and right sides.

[0057] The locking seat 807 may include an inner end portion 8072 and an outer end portion 8073 fixedly spaced longitudinally outside the inner end portion 8072. An accommodation cavity 8070 is defined between the inner end portion 8072 and the outer end portion 8073. Two guiding portions 8075 respectively approach the side beams 8083 on the left and right corresponding sides from the left and right sides. Anti-disengagement portions 8081 protrude outward from the left and right outer side walls of the side beam 8083, and the anti-disengagement portions 8081 are located on the front side of the guiding portions 8075 on the left and right corresponding sides. The longitudinal ends of the guiding portions 8075 can be fixedly attached to the inner end portion 8072 and the outer end portion 8073 in a one-to-one correspondence. Preferably, the front ends of both the inner end portion 8072 and the outer end portion 8073 are fixedly connected by a connecting portion 8071, and the longitudinal ends of the dialing column 8076 are fixedly attached to the inner end portion 8072 and the outer end portion 8073 in a one-to-one correspondence.

[0058] Wherein, a guiding rib 8086 extending in the front and rear directions may be further fixed to one side of the side beam 8083 facing the inner end portion 8072 or the outer end portion 8073, and a guiding rib accommodation groove for accommodating the guiding rib 8086 is correspondingly formed on the inner end portion 8072 or the outer end portion 8073. A third stop surface 8085 facing the insertion pipe 701 may be provided on the front side of the middle portion of the second pressing portion 8082 to define the above-mentioned second limiting position.

[0059] The scope of the present disclosure is not limited by the detailed description, but is defined by the claims and their equivalents, and all variations within the scope of the claims and their equivalents are construed as being included in the present disclosure.

Claims

1. A quick-insert component for connecting a pipe joint (7) and a connecting pipe orifice of a pipe (101). The pipe joint (7) includes an insertion pipe (701) whose longitudinally inner end is fittingly inserted into the connecting pipe orifice. An outward bulge is formed at the longitudinally outer end of the insertion pipe (701) to form a pressing ring (702) with an outer diameter larger than the inner diameter of the connecting pipe. Characterized in that, it includes: An inner insertion pipe (604) fittingly inserted into the connecting pipe orifice. A part of the inner wall of the pipe (101) contracts radially outward to form a first stop surface (1011) longitudinally opposite to the inner insertion pipe (604); At least one second sealing ring (601, 602) sleeved in the pipe (101) to provide longitudinal sealing between the pipe (101) and the insertion pipe (701), which is located between the first stop surface (1011) and the inner insertion pipe (604); And a locking and blocking mechanism that can prevent the pressing ring (702) from slipping out longitudinally outward in the locked state and can allow the pressing ring (702) to slip out longitudinally outward in the unlocked state; The locking and blocking mechanism includes: A locking seat (607, 807) penetrated longitudinally outward by the insertion pipe (701), which is provided with a receiving cavity (6070, 8070), and is connected to the outer end of the inner insertion pipe (604, 804) or the pipe (101). The inner insertion pipe (604, 804) is longitudinally inserted into the pipe (101) in a non-detachable manner; And at least a part of the locking and blocking component is disposed in the receiving cavity (6070, 8070) and can move laterally. When this part is in the first limit position, it longitudinally blocks the pressing ring (702); when this part is in the second limit position, it longitudinally releases the pressing ring (702); The lock blocking assembly includes: a first locking member (609) slidably disposed on the locking base (607) in a transverse plane, which includes a first axial stop piece (6090) and two side beams (6091) extending forward and backward and spaced apart from each other left and right and facing each other. An elastic piece (6092) is fixedly disposed on the front end of the side beam (6091) and can be abutted against the locking base (607) forward; the rear end of the side beam (6091) extends out of the accommodation cavities (6070, 8070) and is fixedly connected to a first pressing portion (6098); the middle portions of the front and rear of the side beam (6091) are fixedly connected to one end of a flexible stop piece (6094), and the other end of the flexible stop piece (6094) extends obliquely inward in the longitudinal direction along the radial direction to the longitudinal insertion path of the pressing ring (702); and a second locking member (608) slidably disposed on the first locking member (609) in a transverse plane, including a second axial stop piece (6080) and a second pressing portion (6082) fixedly located inside and outside the accommodation cavities (6070, 8070) respectively; the other end of the flexible stop piece (6094) is located on the forward and backward movement path of the second axial stop piece (6080). When the other end of the flexible stop piece (6094) is deflected inward in the longitudinal direction by the pressing ring (702) from the second axial stop piece (6080), the second locking member (608) can move forward relative to the first locking member (609) from a rear limit position to a front limit position; when the second locking member (608) is located at the front limit position relative to the first locking member (609), the second axial stop piece (6080) is located on the longitudinal retraction path of the pressing ring (702), and when the first locking member (609) is located at the rear limit position, the second axial stop piece (6080) disengages from the longitudinal retraction path of the pressing ring (702). Wherein, a diameter-expanded portion (605) is formed at one longitudinal outer side end of the outer wall of the inner insertion tube (604).

2. The quick-insertion assembly according to claim 1, characterized in that, one radial inner side end of the first axial stop piece (6090) and / or the second axial stop piece (6080) extends obliquely inward in the longitudinal direction, and the projection of the first axial stop piece (6090) and / or the second axial stop piece (6080) in the transverse plane is crescent-shaped.

3. The quick-insertion assembly according to claim 1, characterized in that, Pulling portions (6081) suitable for being pinched by human fingers are respectively arranged on the left and right sides of the second pressing portion (6082); longitudinal corrugations are arranged on the left and right outer sides of the pulling portions (6081).

4. The quick-insertion assembly according to claim 1, characterized in that, The lock blocking assembly further includes a blocking structure for providing resistance when the second locking member (608) moves forward and backward relative to the first locking member (609).

5. The quick-insertion assembly according to claim 4, characterized in that, The blocking structure includes at least one arcuate strip (6084). The front and rear ends of at least one first connecting beam (6083) are fixedly connected to the second axial stop (6080) and the second pressing part (6082) respectively. The middle part of the arcuate strip (6084) arches towards one side of the first connecting beam (6083) and forms a sliding part limiting groove (6085) with the first connecting beam (6083). A sliding part (6097) fixedly connected to the side beam (6091) extends longitudinally into the sliding part limiting groove (6085). The arched part of the arcuate strip (6084) is located on the front and rear movement paths of the sliding part (6097).

6. The quick-insert assembly according to claim 1, wherein, the second axial stop (6080) and the second pressing part (6082) are also fixedly connected by a second connecting beam (6086) extending in the front and rear directions. A second guiding groove (6088) is provided on the second connecting beam (6086). The first locking member (609) further includes a guiding block fixedly connected to the side beam (6091). The guiding block extends longitudinally into the second guiding groove (6088).

7. The quick-insert assembly according to claim 1, wherein, the inner wall of the pipe (101) contracts outwards to form a second stopping surface (1012) longitudinally opposite to the enlarged diameter part (605); a sleeve (603) is arranged between the inner insertion pipe (604) and the pipe wall of the pipe (101). The sleeve (603) is located longitudinally outside the second stopping surface (1012).

8. The quick-insert assembly according to claim 7, wherein, the inner diameter of the sleeve (603) is larger than the outer diameter of the inner insertion pipe (604), and the outer diameter of the sleeve (603) is smaller than the inner diameter of the longitudinal outer end of the pipe (101) of the enlarged diameter part (605).

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