CN215172187U - Jaw type quick connector - Google Patents

Abstract

The utility model provides a claw type quick connector, which comprises an outer sleeve, a mandrel, at least two claws, a plugging ring and a pushing piece, wherein the mandrel is positioned in a through hole arranged on the outer sleeve; the plugging ring is positioned at the bottom end of the outer sleeve and is connected with the outer sleeve in a sliding way; the pushing piece pushes the outer sleeve and the mandrel to slide relatively, so that the clamping jaws are folded, and the plugging ring moves towards the workpiece. This jack catch formula quick connector is applicable to the work piece gas tightness detection operation that is T shape axle construction, and the radial size when the connector jack catch draws in is adjustable, and the shutoff ring can be dismantled, and adjustable with the axial position of overcoat for this kind of work piece test that this connector can be applicable to multiple model, and the operation that maintains stability is felt.

Description

Jaw type quick connector

Technical Field

The utility model belongs to the connector field especially relates to a jack catch formula quick connector.

Background

When carrying out the gas tightness to test pieces such as equipment or pipeline and examining time, need carry out the shutoff with the through-hole on the test piece, carry out the detection of gas tightness with compressed air again in the test piece, consequently, it is sealed that the test piece is carrying out the important step before the gas tightness detects, among the prior art, the method that the test piece is sealed is mostly clamp or rubber seal, and sealed effect is not good, and the process of installation and dismantlement is complicated, influences detection efficiency.

Disclosure of Invention

In view of this, the utility model aims at overcoming the defect that exists among the above-mentioned prior art, provides a jack catch formula quick connector to carry out the efficient shutoff operation of high quality to the test piece through-hole.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a jaw-type quick connector comprising:

the gas injection device comprises a jacket, a gas injection hole and a gas injection hole, wherein the middle part of the jacket is provided with a first through hole, a second through hole, a third through hole and a fourth through hole which are sequentially communicated, the inner diameter of the fourth through hole is larger than that of the third through hole, and the side wall of the jacket is provided with the gas injection hole which is communicated with the fourth through hole;

the mandrel comprises a first section of shaft and a second section of shaft, the first section of shaft is inserted into the first through hole and slides along the axial direction of the first through hole, and the second section of shaft is connected with the side wall of the second through hole in a sliding manner;

the clamping sleeve is arranged on the periphery of the second section shaft in a surrounding manner, the top of the clamping jaw is clamped in a clamping groove formed in the side wall of the second section shaft, and the lower end of the clamping jaw can swing along the radial direction of the mandrel;

a plurality of circles of stepped convex adjusting blocks are arranged on the outer side wall of the clamping sleeve, the adjusting blocks are transited by inclined planes, and the adjusting blocks are abutted against the inner side wall of the third through hole;

the plugging ring is positioned in the fourth through hole and slides along the inner side wall of the fourth through hole, an elastic piece is arranged between the plugging ring and the outer sleeve, the elastic piece pushes the plugging ring to be away from the outer sleeve, a detachable clamping structure is arranged between the plugging ring and the outer sleeve, and the clamping structure limits the plugging ring to be separated from the fourth through hole through abutting;

and the pushing piece pushes the outer sleeve and the mandrel to relatively slide.

The end socket is annular and is screwed in the first through hole, and the side wall of the first section of shaft is connected with the inner side wall of the end socket in a sliding manner;

the end socket is externally screwed with a nut, and two ends of the nut are respectively abutted against raised clamping platforms arranged on the outer sleeve and the outer ring of the end socket;

the inner diameter of the first through hole is smaller than that of the second through hole.

Furthermore, the outer ring sleeve of the clamping sleeve is provided with a tension spring, and the tension spring is positioned in an annular groove formed in the outer side wall of the clamping jaw.

Further, the diameter of the third through hole is larger than the diameter of the second through hole.

Furthermore, the clamping groove is an annular groove with an L-shaped section and is formed by a first clamping groove formed in the outer side wall of the second section of shaft and a second clamping groove formed in the bottom of the first clamping groove, the top of the clamping jaw is of an L-shaped structure, a third clamping groove is formed in the inner side wall of the clamping jaw, and the L-shaped structure is inserted into the clamping groove;

the outer side wall of the clamping jaw above the adjusting block is a third inclined plane with the lower end inclined inwards;

the lower side wall of the second clamping groove is a first inclined plane with the bottom end of the groove declining, and the end surface of the clamping block protruding from the top end of the clamping jaw and adjacent to the bottom of the second clamping groove is a second inclined plane with the upper end inclining outwards;

the thickness D2 of the clamping block is smaller than the depth D1 of the second clamping groove, the width B2 of the clamping block is smaller than the width B1 of the second clamping groove, and the difference between the thickness of the claw and the depth of the third clamping groove is smaller than the depth D1 of the first clamping groove;

the thickness H2 of the clamping block is smaller than the depth H1 of the second clamping groove, and the width W2 of the third clamping groove is larger than the width difference W1 of the first clamping groove and the second clamping groove.

Further, the elastic piece is a spring, and the spring is in a compressed state;

the plugging ring is provided with a plurality of second slots, the inner wall of the outer sleeve opposite to the second slots is provided with a plurality of first slots, and two ends of the spring are respectively inserted into the first slots and the second slots.

Furthermore, the clamping structure is a clamp spring, the clamp spring is embedded in an annular groove formed in the inner side wall of the fourth through hole, a limiting groove is formed in the outer side wall of the plugging ring, and the inner ring of the clamp spring extends into the limiting groove.

Further, the pusher is a good hand;

the handle comprises a handle, two first transmission plates, two second transmission plates and two second connecting plates, the bottom end of each first transmission plate is hinged with a spacer bush, the bottom end of each second transmission plate is hinged with a mandrel, the top end of each first transmission plate is hinged with the top end of each second transmission plate, and the top ends of the two second transmission plates are fixedly connected with the handle through the second connecting plates;

a first connecting plate is fixed between the two first transmission plates and is positioned on the side edge of the first transmission plate far away from the handle.

Furthermore, a jackscrew is inserted on the first section of shaft.

Further, a first sealing structure is arranged between the second section shaft and the outer side wall of the second through hole;

a second sealing structure is arranged between the plugging ring and the outer side wall of the fourth through hole;

the bottom end of the plugging ring is sleeved with a third sealing structure;

the first sealing structure, the second sealing structure and the third sealing structure are all O-shaped sealing rings.

Compared with the prior art, the beneficial effects of the utility model are that:

(1) this jack catch formula quick connector through establishing multistage regulating block looks butt at the cutting ferrule outer lane, realizes that the overcoat that is equipped with the third through hole is adjusted the radial dimension when the jack catch draws in, makes this connector can be applicable to and snatchs the function to the axial region of the detection piece of multiple size.

(2) This jack catch formula quick connector, the shutoff ring is detachable construction, in the use, can change the shutoff ring as required to make the shutoff ring can peg graft in the tip notch of the detection piece of multiple size, realize the sealed to the detection piece.

(3) According to the jaw type quick connector, the plugging ring and the outer sleeve relatively slide along the axis, and when the height of the shaft part of the detection piece or the position of the annular groove of the outer ring of the shaft part changes, the positions of the plugging ring and the outer sleeve are adjustable, so that the connector can still be used, and stable operation hand feeling is maintained.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:

fig. 1 is a schematic cross-sectional view of a jaw-type quick connector according to the present invention;

FIG. 2 is a greatly enlarged view of portion A of FIG. 1;

FIG. 3 is a comparison of the dimensions of portion A of FIG. 1;

FIG. 4 is a schematic view of a handy structure of the jaw type quick connector of the present invention;

fig. 5 is a cross-sectional view of the overall structure of a clamping sleeve of the jaw type quick connector according to the present invention;

fig. 6 is a bottom view of the overall structure of a ferrule of a jaw-type quick connector according to the present invention;

FIG. 7 is a schematic cross-sectional view of a core shaft of a jaw-type quick connector according to the present invention;

fig. 8 is a top view of a structure of a jacket of a jaw-type quick connector according to the present invention;

fig. 9 is a sectional view of a structure of a jacket of a jaw-type quick connector according to the present invention;

fig. 10 is a schematic view of a bottom view of a blocking ring of the jaw-type quick connector according to the present invention;

fig. 11 is a cross-sectional view of a blocking ring of a jaw-type quick connector according to the present invention.

Description of reference numerals:

1-mandrel; 11-a first section of shaft; 12-a second section of shaft; 121-a first card slot; 122-a second card slot; 1221-a first bevel; 13-a first sealing structure; 14-top thread;

2-clamping jaws; 21-a third card slot; 22-a fixture block; 221-a second bevel; 23-a third bevel; 24-a conditioning block;

3, coating the outer sleeve; 301-a cutting portion; 31-a first via; 32-a second via; 33-a third via; 34-a fourth through hole; 35-gas injection holes; 36-a first slot; 37-a clamp spring;

4-plugging ring; 41-a second slot; 42-a limit groove; 421-a second sealing structure; 43-a third seal configuration;

5-a spring;

6-good hand; 61-a first drive plate; 62-a second drive plate; 63-a handle; 65-a connecting plate;

7-sealing the end; 71-a clamping table;

8-a nut;

10-a workpiece; 101-a shaft portion; 1011-ring groove; 102-a ring-shaped body; 1021-circular groove.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The invention will be described in detail with reference to the following examples with reference to the accompanying drawings:

as shown in fig. 1 to 11, the present embodiment provides a jaw type quick connector, which is suitable for an air tightness detecting operation of a workpiece 10 having a T-shaped shaft structure, the workpiece 10 includes a shaft portion 101 and an annular body 102 fixed to an outer periphery of the shaft portion 101, an annular groove 1011 is formed on an outer side wall of the shaft portion 101, and a circular groove 1021 is formed on an end surface of the annular body 102.

The jaw type quick connector provided by the embodiment comprises an outer sleeve 3, a mandrel 1, four jaws 2, a plugging ring 4 and a pushing piece, wherein the middle part of the outer sleeve 3 is provided with a first through hole 31, a second through hole 32, a third through hole 33 and a fourth through hole 34 which are sequentially communicated from top to bottom, the diameters of the four through holes are sequentially increased, and the side wall of the outer sleeve 3 is provided with a gas injection hole 35 which is communicated with the fourth through hole 34 and is a detection pressure connection port; the mandrel 1 comprises a first section of shaft 11 and a second section of shaft 12, wherein the first section of shaft 11 is inserted in the first through hole 31 and slides along the axial direction of the first through hole 31, and the second section of shaft 12 is connected with the side wall of the second through hole 32 in a sliding manner; the four clamping jaws 2 form a clamping sleeve with a through inner hole in a surrounding manner, the clamping sleeve is arranged on the periphery of the second section of shaft 12 in a surrounding manner, the top parts of the clamping jaws 2 are clamped in clamping grooves formed in the side wall of the second section of shaft 12, and the lower ends of the clamping jaws 2 can swing along the radial direction of the mandrel 1; a plurality of circles of stepped convex adjusting blocks 24 are arranged on the outer side wall of the clamping sleeve, the plurality of circles of adjusting blocks 24 are transited through inclined planes, and the adjusting blocks 24 are abutted against the inner side wall of the third through hole 33; the plugging ring 4 is positioned in the fourth through hole 34 and slides along the inner side wall of the fourth through hole 34, an elastic part is arranged between the plugging ring 4 and the outer sleeve 3, the elastic part pushes the plugging ring 4 to be far away from the outer sleeve 3, a detachable clamping structure is arranged between the plugging ring 4 and the outer sleeve 3, and the clamping structure limits the plugging ring 4 to be separated from the fourth through hole 34 by abutting; the pushing piece pushes the jacket 3 and the mandrel 1 to slide relatively.

When the jaw type quick connector provided by the embodiment is used, the bent end at the bottom of the jaw 2 is inserted into the annular groove 1011 of the shaft part 101 of the workpiece 10, the handle 6 serving as a pushing part is lifted to push the outer sleeve 3 to move downwards, the lower edge of the third through hole 33 slides through the inclined surface on the adjusting block 24 of the jaw 2 to abut against the outer side wall of the adjusting block 24, the jaw 2 is folded, and the positioning of the jaw 2 and the shaft part 101 of the workpiece 10 is realized; in the process that the outer sleeve 3 moves downwards, the plugging ring 4 moves downwards simultaneously and is inserted into the circular groove 1021 arranged on the annular body 102 of the workpiece 10, the inner ring of the circular groove 1021 and the shaft part 101 of the workpiece 10 above the circular groove 1021 are covered and sealed, and then the airtightness of the workpiece 10 is detected.

According to the jaw type quick connector provided by the embodiment, the outer sleeve 3 provided with the third through hole 33 is used for adjusting the radial size of the jaw 2 when the jaw 2 is folded through the abutting of the multi-stage adjusting blocks 24 arranged on the outer ring of the clamping sleeve, so that the connector can be suitable for grabbing the shaft parts 101 of detection pieces with various sizes; the plugging ring 4 is of a detachable structure, and the plugging ring 4 can be replaced as required in the use process, so that the plugging ring 4 can be inserted into end part notches of detection pieces with various sizes, and the detection pieces can be sealed; the plugging ring 4 and the outer sleeve 3 slide relatively along the axis, and when the height of the shaft part 101 of the detection piece or the position of the annular groove 1011 of the outer ring of the shaft part 101 changes, the position of the plugging ring 4 and the position of the outer sleeve 3 can be adjusted, so that the connector can still be used, and the stable operation hand feeling is maintained.

Specifically, in the embodiment, the sealing head 7 is further included, the sealing head 7 is annular and is screwed in the first through hole 31 at the top of the outer sleeve 3, the nut 8 is screwed outside the sealing head 7, two ends of the nut 8 are respectively abutted with raised clamping platforms 71 arranged on the outer rings of the outer sleeve 3 and the sealing head 7 to position the sealing head 7, and the side wall of the first section of shaft 11 is connected with the inner side wall of the sealing head 7 in a sliding manner; meanwhile, in the embodiment, the inner diameter of the first through hole 31 is smaller than the inner diameter of the second through hole 32, that is, smaller than the diameter of the second section shaft 12, so as to prevent the mandrel 1 from slipping out of the first through hole 31.

Further, in this embodiment, the outer ring of the sleeve chuck is sleeved with a tension spring, and the tension spring is located in an annular groove formed in the outer side wall of the jaw 2 and used for drawing the jaw 2 in the periphery of the second section shaft 12 for positioning; meanwhile, in the embodiment, the diameter of the third through hole 33 formed in the outer sleeve 3 is larger than that of the second through hole 32, and the third through hole is used for accommodating the convex adjusting block 24.

In this embodiment, the clamping structure between the claw 2 and the second section shaft 12 is: the clamping groove arranged on the outer side wall of the second section shaft 12 is an annular groove with an L-shaped section, and is formed by a first clamping groove 121 arranged on the outer side wall of the second section shaft 12 and a second clamping groove 122 arranged at the bottom of the first clamping groove 121, the top of the clamping jaw 2 is of an L-shaped structure, and is formed by arranging a third clamping groove 21 on the inner side wall, and the L-shaped structure is inserted into the clamping groove;

further, the concrete structure that the lower extreme of jack catch 2 can be followed dabber 1 radial swing is: the outer side wall of the jaw 2 above the adjusting block 24 is a third inclined surface 23 with the lower end inclined inwards; the lower side wall of the second clamping groove 122 is a first inclined surface 1221 with a downward-inclined groove bottom end, and the end surface of the clamping block 22 protruding from the top end of the clamping jaw 2, which is adjacent to the groove bottom of the second clamping groove 122, is a second inclined surface 221 with an outward-inclined upper end; meanwhile, the thickness D2 of the latch 22 is smaller than the depth D1 of the second latch groove 122, the width B2 of the latch 22 is smaller than the width B1 of the second latch groove 122, and the difference between the thickness of the pawl 2 and the depth of the third latch groove 21 is smaller than the depth D1 of the first latch groove 121; the thickness H2 of the latch 22 is smaller than the depth H1 of the second latch groove 122, and the width W2 of the third latch groove 21 is larger than the difference W1 between the widths of the first and second latch grooves 121 and 122. Due to the design, a gap enough for the clamping jaw 2 to shake is reserved between the clamping block 22 and the side wall of the clamping groove and between the clamping jaw 2 and the side walls of the second section shaft 12 and the second through hole 32, so that the lower end of the clamping jaw 2 can shake along the radial direction of the mandrel 1.

Further, in the present embodiment, the elastic member is a spring 5, and the spring 5 is in a compressed state; specifically, the plugging ring 4 is provided with a plurality of second slots 41, the inner wall of the outer sleeve 3 opposite to the second slots 41 is provided with a plurality of first slots 36, and two ends of the spring 5 are respectively inserted into the first slots 36 and the second slots 41 to position the spring 5; the clamping structure is a clamp spring 37, the clamp spring 37 is embedded in an annular groove formed in the inner side wall of the fourth through hole 34, a limiting groove 42 is formed in the outer side wall of the plugging ring 4, the inner diameter of the limiting groove 42 is matched with the outer diameter of the clamp spring 37, the inner ring of the clamp spring 37 extends into the limiting groove 42, and the plugging ring 4 is limited through the side wall on the upper side of the limiting groove 42; in order to facilitate the installation of the clamp spring 37, the lower end of the limiting groove 42 of the plugging ring 4 is further cut, the length of the plugging ring 4 above the cutting section is smaller than the depth of the fourth through hole 34, and meanwhile, the outer diameter of the cutting section is matched with the diameter of the circular groove 1021 of the workpiece 10.

In this embodiment, the pushing member is a good hand 6, the good hand 6 includes a handle 63, two first transmission plates 61, two second transmission plates 62 and two second connection plates 65, the bottom end of the first transmission plate 61 is hinged to the spacer, the bottom end of the second transmission plate 62 is hinged to the mandrel 1, the top end of the first transmission plate 61 is hinged to the top end of the second transmission plate 62, the top ends of the two second transmission plates 62 are fixedly connected to the handle 63 through the second connection plate 65, the first connection plate 65 is fixed between the two first transmission plates 61, the first connection plate 65 is located on the side edge of the first transmission plate 61 far away from the handle 63, so as to ensure the synchronism of the movement of the two first transmission plates 6191, when in use, the handle 63 is lifted up, the outer sleeve 3 moves downward relative to the mandrel 1, the handle 63 is pressed downward, and the outer sleeve 3 moves upward relative to the mandrel 1.

Further, in the present embodiment, the first section shaft 11 is inserted with the top thread 14, and the top thread 14 is used for limiting the displacement of the mandrel 1, and simultaneously, the mandrel 1 can be prevented from falling off from the first through hole 31 during installation.

In this embodiment, a first sealing structure 13 is disposed between the second-stage shaft 12 and the outer side wall of the second through hole 32; a second sealing structure 421 is arranged between the plugging ring 4 and the outer side wall of the fourth through hole 34; the bottom end of the plugging ring 4 is sleeved with a third sealing structure 43; the first sealing structure 13, the second sealing structure 421 and the third sealing structure 43 are all O-shaped sealing rings, and the three O-shaped sealing rings are made of nitrile rubber and are respectively located in annular grooves formed in the outer side wall of the second section shaft 12, the outer side wall of the plugging ring 4 connected with the fourth through hole 34 and the outer side wall of the plugging ring 4 connected with the circular groove 1021 of the workpiece 10, so that the workpiece 10 is sealed.

Note: the fixing manner described herein is, if not specifically stated, a conventional fixing manner such as a screw connection, a welding, an adhesion, etc. may be used.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A jaw-type quick connector characterized in that: the method comprises the following steps:

the gas injection device comprises an outer sleeve (3), wherein a first through hole (31), a second through hole (32), a third through hole (33) and a fourth through hole (34) which sequentially penetrate through the middle of the outer sleeve (3) are formed in the middle of the outer sleeve (3), the inner diameter of the fourth through hole (34) is larger than that of the third through hole (33), and a gas injection hole (35) penetrating through the fourth through hole (34) is formed in the side wall of the outer sleeve (3);

the mandrel (1), the mandrel (1) includes a first section shaft (11) and a second section shaft (12), the first section shaft (11) is inserted in the first through hole (31) and slides along the axial direction of the first through hole (31), and the second section shaft (12) is connected with the side wall of the second through hole (32) in a sliding manner;

the clamping device comprises at least two clamping jaws (2), wherein the clamping jaws (2) can enclose a clamping sleeve with a through inner hole, the clamping sleeve is enclosed on the periphery of a second section shaft (12), the top of each clamping jaw (2) is clamped in a clamping groove formed in the side wall of the second section shaft (12), and the lower end of each clamping jaw (2) can swing along the radial direction of a mandrel (1);

a plurality of circles of stepped convex adjusting blocks (24) are arranged on the outer side wall of the clamping sleeve, the adjusting blocks (24) are transited through inclined planes, and the adjusting blocks (24) are abutted against the inner side wall of the third through hole (33);

the plugging ring (4) is positioned in the fourth through hole (34) and slides along the inner side wall of the fourth through hole (34), an elastic piece is arranged between the plugging ring (4) and the outer sleeve (3), the elastic piece pushes the plugging ring (4) to be away from the outer sleeve (3), a detachable clamping structure is arranged between the plugging ring (4) and the outer sleeve (3), and the clamping structure limits the plugging ring (4) to be separated from the fourth through hole (34) through abutting;

the pushing piece pushes the outer sleeve (3) and the mandrel (1) to slide relatively.

2. A jaw-type quick connector as claimed in claim 1, wherein: the sealing head (7) is annular and is screwed in the first through hole (31), and the side wall of the first section of shaft (11) is connected with the inner side wall of the sealing head (7) in a sliding manner;

a nut (8) is screwed outside the seal head (7), and two ends of the nut (8) are respectively abutted against raised clamping tables (71) arranged on the outer rings of the outer sleeve (3) and the seal head (7);

the inner diameter of the first through hole (31) is smaller than the inner diameter of the second through hole (32).

3. A jaw-type quick connector as claimed in claim 1, wherein: the outer ring of the clamping sleeve is sleeved with a tension spring which is positioned in an annular groove formed in the outer side wall of the clamping jaw (2).

4. A jaw-type quick connector as claimed in claim 1, wherein: the diameter of the third through hole (33) is larger than the diameter of the second through hole (32).

5. A jaw-type quick connector as claimed in claim 4, wherein: the clamping groove is an annular groove with an L-shaped section and is formed by a first clamping groove (121) formed in the outer side wall of the second section shaft (12) and a second clamping groove (122) formed in the bottom of the first clamping groove (121), the top of the clamping jaw (2) is of an L-shaped structure, the clamping jaw is formed by a third clamping groove (21) formed in the inner side wall, and the L-shaped structure is inserted into the clamping groove;

the outer side wall of the clamping jaw (2) above the adjusting block (24) is a third inclined surface (23) with the lower end inclined inwards;

the lower side wall of the second clamping groove (122) is a first inclined surface (1221) with the bottom end declining, and the end surface of the clamping block (22) protruding from the top end of the clamping jaw (2) and the bottom of the second clamping groove (122) adjacent is a second inclined surface (221) with the upper end inclining outwards;

the thickness D2 of the clamping block (22) is smaller than the depth D1 of the second clamping groove (122), the width B2 of the clamping block (22) is smaller than the width B1 of the second clamping groove (122), and the difference between the thickness of the clamping block (2) and the depth of the third clamping groove (21) is smaller than the depth D1 of the first clamping groove (121);

the thickness H2 of the clamping block (22) is smaller than the depth H1 of the second clamping groove (122), and the width W2 of the third clamping groove (21) is larger than the width difference W1 between the first clamping groove (121) and the second clamping groove (122).

6. A jaw-type quick connector as claimed in claim 1, wherein: the elastic piece is a spring (5), and the spring (5) is in a compressed state;

the plugging ring (4) is provided with a plurality of second slots (41), the inner wall of the outer sleeve (3) opposite to the second slots (41) is provided with a plurality of first slots (36), and two ends of the spring (5) are respectively inserted into the first slots (36) and the second slots (41).

7. A jaw-type quick connector as claimed in claim 1, wherein: the clamping structure is a clamp spring (37), the clamp spring (37) is embedded in an annular groove formed in the inner side wall of the fourth through hole (34), a limiting groove (42) is formed in the outer side wall of the blocking ring (4), and the inner ring of the clamp spring (37) extends into the limiting groove (42).

8. A jaw-type quick connector as claimed in claim 1, wherein: the pushing piece is a good hand (6);

the manipulator (6) comprises a handle (63), two first transmission plates (61), two second transmission plates (62) and two second connecting plates (65), the bottom end of each first transmission plate (61) is hinged to a spacer bush, the bottom end of each second transmission plate (62) is hinged to the mandrel (1), the top end of each first transmission plate (61) is hinged to the top end of each second transmission plate (62), and the top ends of the two second transmission plates (62) are fixedly connected with the handle (63) through the second connecting plates (65);

a first connecting plate (65) is fixed between the two first transmission plates (61), and the first connecting plate (65) is located on the side, away from the handle (63), of the first transmission plate (61).

9. A jaw-type quick connector as claimed in claim 1, wherein: the first section of shaft (11) is inserted with a jackscrew (14).

10. A jaw-type quick connector as claimed in claim 1, wherein: a first sealing structure (13) is arranged between the second section of shaft (12) and the outer side wall of the second through hole (32);

a second sealing structure (421) is arranged between the plugging ring (4) and the outer side wall of the fourth through hole (34);

the bottom end of the plugging ring (4) is sleeved with a third sealing structure (43);

the first sealing structure (13), the second sealing structure (421) and the third sealing structure (43) are all O-shaped sealing rings.

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