CN114571193A

CN114571193A - Method for assembling quick connector device with replaceable insertion part of endoscope

Info

Publication number: CN114571193A
Application number: CN202210351180.2A
Authority: CN
Inventors: 谢民政; 谢梦蕾; 史健
Original assignee: Changzhou Yanshun Optoelectronics Technology Co ltd
Current assignee: Changzhou Yanshun Optoelectronics Technology Co ltd
Priority date: 2022-04-02
Filing date: 2022-04-02
Publication date: 2022-06-03
Anticipated expiration: 2042-04-02
Also published as: CN114571193B

Abstract

The invention relates to an assembly method of a quick connector device with an endoscope replaceable insertion part, which comprises the quick connector device, wherein the quick connector device comprises a plug assembly, a socket assembly and a locking mechanism, the plug assembly comprises an electric plug fixing seat and a plug hook, the socket assembly comprises a socket, the locking mechanism comprises a hook pressing ring and a locking nut, and the specific processing and assembly steps are as follows: firstly, each part is firstly processed on a turn-milling numerical control machine tool, the assembly of an electric plug fixing seat and a plug clamping hook is completed, and secondly, the whole assembly is as follows: the locking mechanism is used for locking the plug assembly and the socket. The invention not only has simple processing and assembling method, but also can be suitable for the quick plug-in connection of insertion parts with different lengths and different diameters and the endoscope mainframe box, so that one endoscope can be matched with the insertion parts with different specifications for use, and the application range is enlarged.

Description

Method for assembling quick connector device with replaceable insertion part of endoscope

Technical Field

The invention relates to an assembling method, in particular to an assembling method of a quick connector device with an endoscope replaceable insertion part.

Background

The industrial endoscope is a novel nondestructive testing instrument which integrates multiple technologies of optics, precision machinery and electronics. The method is widely applied to the manufacturing and maintenance of petroleum, chemical industry, aerospace, automobile and other industries.

For example, the overhaul of large generators by power plants. Wherein, the inspection of large holes, deep holes and main steam thick pipelines related to the power generation stator or the inspection of retrieving fallen parts requires the inspection of an endoscope with a longer insertion part with a working length of 8000 mm-15000 mm or the inspection of an endoscope with a thicker insertion part with a diameter of 12 mm-18 mm; for the examination of cracks in small oil pipes and nozzles of large generators and nozzle clogging, it is necessary to examine an endoscope of a small insertion part having a diameter of 4mm to 8mm and an endoscope of an insertion part having a short working length of 600mm to 2000 mm. Therefore, for the nondestructive inspection of the large whole equipment, 2 sets (at least) to 6 sets of different-specification insertion portion endoscopes are required to finish the inspection of the whole equipment.

For example, endoscopes are also used for general maintenance and inspection of aircraft and various parts in aerospace, and are endoscopes requiring insertion portions of various specifications. It takes 3 sets (at least) to 8 sets of different diameter or length specifications for the insertion portion endoscope to complete the overhaul of the whole apparatus.

Drawbacks of the prior art assembly of the endoscope insertion section joint:

1. firstly, the defect (assembly defect 1) is that, at present, in the prior art, the main body part and the insertion part of the endoscope main machine are not interchangeable and are in a fixed design structure, and the insertion part cannot be pulled out quickly and cannot be replaced by an insertion part with another specification in time for immediate use. Due to the design of the rear end connector connecting structure of the insertion part of the hard tube endoscope with the specifications, due to reasons of insufficient design experience and the like, glue materials such as epoxy glue are directly adopted, and the rear end of the insertion part is directly connected with the main body connecting seat of the endoscope main body in an undetachable gluing manner and fixed. The disadvantage of this assembly is that the assembly cycle time is long. Because one of the properties of many epoxy adhesives is cure time, production efficiency is affected. The second assembly defect is that the structural adhesive has a two-in-one or three-in-one formula, and has high proportion blending requirements. For example, the proportion of pectin is not correct, or the process method for manufacturing the mixed glue is not satisfactory, the glue has poor and weak bonding quality to joints, has the defects of degumming, cracking, falling off and the like at the joints by shaking a little, and has serious assembly risk. In the same manner, in some prior art, after the joint of the insertion portion of the flexible endoscope is connected with the rear joint of the insertion portion, the strength and reliability of the joint are not required, and the joint is fixed by using the related adhesive without being detachable, and the defects are the same as the above. If the rear end joint of the insertion part of the endoscope is required to be firm, the subsequent product maintenance is not considered, the detachment and the installation are convenient, and the design is incomplete.

2. The second defect (assembly defect 2), namely the defect when using after the assembly is connected, in the prior art, some endoscopes, especially endoscopes connected with a hard tube insertion part, have a structure that one end of the joint connection part is an external thread, and the other end is a rotatable and movable nut for connection, and the defects are that:

first, when the insertion portion of the endoscope is to be removed and connected, especially when the insertion portion is to be replaced in field operation, the male screw connector exposed at one end thereof is subject to product collision, and the male screw of the connector of the insertion portion concerned is deformed by collision, and the screw thread of the bolt or the nut is deformed, so that the connection and the assembly cannot be performed. At this time, the joint of the insertion portion thereof is discarded.

Secondly, in the structure directly adopting the screw connection, the screw thread is designed to have a corresponding length for reliable connection, the longer the length is, the more reliable the connection is, but the longer the assembly and disassembly time, i.e. the assembly and disassembly time is. The working efficiency is low.

3. And the third defect (assembly defect 3), namely the assembly connection of the joint in the prior art, is that a conical end jacking screw (standard part) from M2.0 to M2.5 is arranged in a screw hole in the side wall at one end of a connecting cylinder seat of a main endoscope, and then a clock screwdriver is adopted to screw the conical end jacking screw (standard part) in the screw hole into a V-shaped annular groove of the rear joint of the insertion pipe. 98% of the rear joints of the endoscope insertion parts are assembled in this way, and the assembly method has the defects that because the conical end is tightly pressed against the screw, the assembly force of holding a small screwdriver by hand is limited, and the conical end surface of the conical end is abutted against the V-shaped annular groove, the conical end surface is easy to loosen particularly after being vibrated, and the assembly is often not firm. In use, the whole insertion part is often loosened or automatically rotated, and the whole insertion part cannot be used in serious cases.

Disclosure of Invention

The purpose of the invention is: the assembling method of the quick connector device with the replaceable insertion part of the endoscope is simple in machining and assembling method, the assembled quick connector device can be suitable for quick plug-in connection of insertion parts with different lengths and diameters and an endoscope mainframe box, one endoscope can be matched with the insertion parts with different specifications for use, the universality is good, the use range is expanded, the use cost is reduced, and the follow-up maintenance time and maintenance cost are reduced.

In order to achieve the purpose, the technical scheme of the invention is as follows: the assembly method of the quick connector device with the replaceable insertion part of the endoscope comprises the quick connector device, the quick connector device comprises a plug assembly and a socket assembly, the plug assembly is assembled with the insertion part, the socket assembly is assembled with the endoscope main case, and a locking mechanism is inserted into the plug assembly and locked with the socket assembly, the plug assembly comprises an electric plug fixing seat and a plug hook, one end of the plug hook is sleeved on the periphery of the electric plug fixing seat, the socket assembly comprises a socket, the locking mechanism comprises a hook pressing ring and a locking nut, and the specific assembly steps are as follows:

the machining and assembling method of the plug assembly comprises the following steps:

step one, the processing method of the electric plug fixing seat comprises the following steps:

a. selecting hard aluminum or stainless steel bar stock, cutting the hard aluminum or stainless steel bar stock into the length of 26 mm-50 mm,

b. one of the bar materials is selected and clamped on a turn-milling numerical control machine tool through a spring jacket, an inserting part connecting section, a middle section and a socket connecting section which are integrated with each other are lathed on the bar material, the outer diameter of the inserting part connecting section is larger than that of the middle section, the outer diameter of the middle section is larger than that of the socket connecting section, meanwhile, a radial screw hole is lathed on the inserting part connecting section, a limiting flange and a radial screw hole are lathed on the middle section, so that the requirements of semi-finished drawing of an electric plug fixing seat are met,

step two, the processing method of the plug hook comprises the following steps:

a. selecting spring steel or stainless steel pipe material, cutting the spring steel or stainless steel pipe material into 30-50 mm long pieces,

b. a plurality of countersunk holes are machined by a turning and milling numerical control machine tool, then elastic clamping jaws are finely turned according to the drawing requirements, a cutting lathe tool is used for cutting off parts, then the parts are positioned and clamped on a linear cutting tool according to the horizontal position, two or four elastic clamping jaws which are uniformly distributed along the circumferential direction of the parts are turned by a linear cutting machine tool, so that the parts meet the semi-finished drawing requirements of the plug clamping hook,

step three, the assembling step of the plug assembly is as follows:

firstly, one end of the plug hook processed in the second step is sleeved on the periphery of the middle section of the electric plug fixing seat, the plug hook is abutted against one side surface of the limiting flange of the middle section, a fastening piece is inserted into a counter bore of the plug hook and screwed into a radial screw hole of the middle section, and the assembly of the plug assembly is completed,

secondly, a rear connecting ring of the insertion part is arranged in an inner hole of the connection section of the insertion part, and a fastening piece is screwed into a radial screw hole of the connection section of the insertion part to be connected with the rear connecting ring;

secondly, a processing method of the socket assembly comprises the following steps:

step one, a machining method of the socket comprises the following steps:

a. selecting stainless steel or brass, cutting the stainless steel or brass into a length of 30-60 mm,

b. a plug connecting section, a locking connecting section and an endoscope mainframe connecting section which are connected into a whole are processed on a turn-milling numerical control machine tool, two or four clamping holes and positioning guide grooves are processed in the circumferential direction of the plug connecting section, the positioning guide grooves are positioned at the outer sides of the clamping holes, a pin shaft groove and a long groove are processed on the locking connecting section, a flange is processed on the endoscope mainframe connecting section to meet the requirement of a semi-finished product drawing of a socket,

thirdly, a machining method of the locking mechanism comprises the following steps:

step one, the processing method of the clamping hook pressing ring comprises the following steps:

a. the stainless steel or the brass is selected,

b. the radial counter bore of the clamping hook pressing ring, the screw hole which is coaxially arranged with the radial counter bore and the external thread on the outer wall are processed on a turning and milling numerical control machine tool or by powder injection, so that the requirements of the semi-finished product drawing of the clamping hook pressing ring are met,

step two, the processing method of the locknut comprises the following steps:

a. selecting a round bar material of duralumin or stainless steel or brass,

b. processing internal threads and radial threaded holes which are arranged along the axial direction of a turn-milling numerical control machine tool to enable the turn-milling numerical control machine tool to meet the requirements of semi-finished product drawings of the locking nut;

fourthly, the assembling and connecting steps of the quick connector device are as follows:

firstly, the clamping hook pressing ring is sleeved on the periphery of the locking connection section of the socket, a pressing ring positioning pin is inserted from a radial counter bore of the clamping hook pressing ring and then screwed into a pin shaft groove, the bottom of the pressing ring positioning pin can slide in the pin shaft groove, the height of the head part does not exceed the radial counter bore, then the part of the locking nut is sleeved on the periphery of the locking connection section, the rest part with the internal thread is connected with the external thread of the clamping hook pressing ring, a nut positioning pin is screwed into a radial threaded hole, the bottom of the nut positioning pin is inserted into a long groove, the bottom of the nut positioning pin can slide in the long groove, and the assembly of the locking mechanism and the socket is completed,

secondly, the connecting section of the endoscope mainframe box is assembled with the endoscope mainframe box, the flange is arranged in the inner cavity of the endoscope mainframe box and is abutted against the inner wall of a square hole of the endoscope mainframe box, after the socket connecting section of the electric plug fixing seat is arranged in an inner hole of the socket, simultaneously, the elastic claws slide along the positioning guide grooves and utilize the elasticity of the elastic claws to enable the end parts of the elastic claws to be respectively clamped into corresponding clamping holes, the insertion of the plug assembly and the socket assembly is completed, if the plug assembly and the socket assembly need to be separated, the socket only needs to be pulled out from the electric plug fixing seat,

and the locking nut rotates 90 degrees clockwise, the clamping hook pressing ring moves along the axial direction, the inner hole opening at the end part of the clamping hook pressing ring is pressed on the outer sides of the elastic clamping jaws, the locking of the head assembly and the socket assembly is realized, the integral assembly of the quick connector device is also completed, otherwise, if the locking nut needs to be unlocked, the clamping hook pressing ring moves towards the outer side and is disengaged from the elastic clamping jaws to be pressed, and the locking nut rotates 90 degrees anticlockwise.

In the above technical scheme, the electric connector further comprises an electric assembly consisting of an electric plug and an electric socket, and the specific processing and assembling steps are as follows:

firstly, in the processing process of the electric plug fixing seat, a circular connecting table is processed in an inner hole of the electric plug fixing seat by utilizing a turning and milling numerical control machine,

in the assembly step of the plug assembly, before the electric plug fixing seat is connected with the rear connecting ring of the inserting part, the electric plug is firstly installed in an inner hole of the electric plug fixing seat and is connected with the circular connecting table into a whole through a fastener, so that the assembly of the electric plug and the electric plug fixing seat is completed;

secondly, processing a flange connecting step in the inner hole of the socket by using a turning and milling numerical control machine tool in the processing process of the socket,

the processing method of the socket assembly further comprises a second step of installing the electric socket into an inner hole of the socket and connecting the electric socket and the flange plate into a whole through a fastening piece to complete the assembly of the socket and the electric socket;

and in the assembling and connecting step of the quick connector device, the electrical connection between the electrical plug and the electrical socket is completed simultaneously in the plug-in mounting process of the electrical plug fixing seat and the electrical socket.

In the above technical solution, the plug assembly further includes a sealing component formed by a plug protecting sleeve and a protecting sleeve housing, the processing and assembling method of the plug assembly further includes a processing step of the sealing component, and the processing modes of the sealing component include two types:

the first processing mode is specifically as follows: step a, processing a semi-finished product drawing requirement meeting the shell of the protective sleeve on a numerical control lathe or a common lathe, step b, placing a rubber raw material in a vulcanization mold, vulcanizing, processing a plug protective sleeve, then bonding the plug protective sleeve and the protective sleeve shell into an integrated structure by using an adhesive to form a sealing component,

the second processing mode is specifically as follows: step a, processing a semi-finished product drawing requirement which meets the shell of the protective sleeve on a numerical control lathe or a common lathe, and step b, firstly coating a layer of coupling agent on the periphery of one end of the shell of the protective sleeve, then placing the shell of the protective sleeve and a rubber raw material into a vulcanization mold, and then vulcanizing to form a sealing component with an integrated structure;

the assembling step of the plug assembly further comprises the following steps: seal assembly passes the portion of inserting, and electric plug fixing base and plug pothook are located the protecting jacket shell inner chamber, simultaneously the one end and the portion of inserting linkage segment tight fit of protecting jacket shell, and the location step of protecting jacket shell inner chamber processing offsets with the another side of the spacing flange of interlude to and the other end and the lock nut of protecting jacket shell offset, accomplish the assembly of seal assembly and electric plug fixing base.

In the technical scheme, when the turning and milling numerical control machine tool processes the elastic clamping jaw, the inner wall of the end part of the elastic clamping jaw is processed with the radial protrusion, the inner side surface and the outer side surface of the radial protrusion are processed with the guide inclined planes, when the electric plug fixing seat is plugged with the socket, the radial protrusion slides along the positioning guide groove and then is clamped into the clamping hole of the socket, and the guide inclined planes play a role in guiding and positioning in the plugging process.

In the above technical scheme, the locking nut further utilizes a milling cutter to machine the heat dissipation slots uniformly arranged along the circumferential direction of the locking nut on a turn-milling numerical control machine tool.

In the technical scheme, a sealing groove is machined in the other side face of the limiting flange, a sealing ring is installed in the sealing groove, the positioning step of the inner cavity of the protective sleeve shell is in sealing connection with the other side face of the limiting flange, the sealing groove is machined in the other end face of the protective sleeve shell, the sealing ring is installed in the sealing groove, the other end face of the protective sleeve shell is in sealing butt connection with the locking nut, and the sealing ring is arranged on the periphery of the connecting ring behind the inserting portion and is in sealing connection with the inner wall of the electric plug fixing seat.

In the technical scheme, a sealing groove is processed on the outer peripheral wall of the locking connection section of the socket on the turn-milling numerical control machine tool, and a sealing ring is arranged in the sealing groove, so that the locking nut is in sealing connection with the locking connection section.

In the technical scheme, the locking nut is further provided with a radial counter bore on a turn-milling numerical control machine tool, a sealing screw is arranged in the radial counter bore and above the pressing ring positioning pin, and a sealing glue is coated.

In the above technical scheme, locking mechanism still includes fixation nut, fixation nut dress is on endoscope mainframe box linkage segment and rather than threaded connection, and the radial lock pin that is equipped with on the fixation nut offsets with the periphery wall of socket, all be equipped with the sealing washer on fixation nut's the both sides face, and a side of fixation nut tightly laminates on lock nut's lateral surface.

The invention has the positive effects that: after the assembly method of the quick connector device with the replaceable insertion part of the endoscope is adopted, the quick connector device comprises the quick connector device, the quick connector device comprises a plug assembly assembled with the insertion part, a socket assembly assembled with an endoscope mainframe box and a locking mechanism inserted and locked by the plug assembly and the socket assembly, the plug assembly comprises an electric plug fixing seat and a plug hook, one end of the plug hook is sleeved on the periphery of the electric plug fixing seat, the socket assembly comprises a socket, the locking mechanism comprises a hook pressing ring and a locking nut, and the specific assembly steps are as follows: firstly, a machining and assembling plug assembly specifically comprises: processing out electric plug fixing base and plug pothook on the turn-milling digit control machine tool to cut out the elasticity jack catch of plug pothook on the wire cut electrical discharge machine tool, accord with the semi-manufactured drawing requirement of electric plug fixing base and plug pothook, accomplish the equipment of electric plug fixing base and plug pothook at last, the second, processing socket assembly spare specifically is: processing out the socket on the turn-milling numerical control machine tool to accord with the semi-manufactured goods drawing requirement of socket, the third, processing locking mechanism, perhaps utilize powder injection processing pothook clamping ring on the turn-milling numerical control machine tool, processing out lock nut on the turn-milling numerical control machine tool, make it accord with pothook clamping ring and lock nut's semi-manufactured goods drawing requirement, the fourth, the erection joint step of quick-operation joint device is as follows: firstly, assembling a locking mechanism and a socket, then completing the insertion of a plug assembly and the socket, and finally completing the locking of the plug assembly and the socket through the locking mechanism; the invention not only has simple and convenient processing and assembling method, firm assembling and connecting and good reliability, but also has the advantages that:

when the insertion part and the front section part of the endoscope have any faults or damages, the insertion part of the endoscope can be directly maintained as long as the insertion part of the endoscope is quickly pulled down, and the parts of the main body host machine and the like of the endoscope behind the insertion part of the endoscope do not need to be disassembled, so that the endoscope can be continuously used for carrying out inspection or maintenance work on related equipment, and is quick, thereby achieving the purposes of facilitating the maintenance of the endoscope, reducing the maintenance workload and the maintenance cost, improving the maintenance work efficiency, improving the maintenance quality of the endoscope and the like;

the connector device of the invention is to realize the purpose that the same flexible endoscope is used, the insertion part with the similar camera performance and the smaller diameter and the shorter specification and the insertion part with the larger diameter and the longer specification can be exchanged and can be quickly pulled out (used or failed) from an endoscope main body (a body main body is replaced), and then a new insertion part to be replaced is quickly connected with the connector seat of the quick connector of the main body of the same endoscope (the insertion part of a spare accessory or the insertion part with the customized different specification diameters or lengths), thereby achieving the purpose that the same industrial flexible endoscope can replace the use range of 2 or more endoscopes. The same endoscope finishes the purposes of overhauling the depth distance of the cavity in the larger equipment and inspecting the small hole and the small gap of the same equipment; if a spare insertion part is additionally arranged, if the endoscope fails in the maintenance, the maintenance work can be immediately returned to the inspection work by only replacing a spare insertion part assembly. Has the advantages of avoiding shutdown and production stoppage caused by the fault problem of the maintenance instrument;

as described above, the quick connector device of the present invention is intended to solve the problem that the insertion portion of the endoscope and the main body thereof cannot be connected to each other interchangeably, and also to achieve the purpose of quickly connecting the "quick plug" (connected to the "insertion portion assembly") to the "quick socket" by pulling out the "quick plug", and then quickly connecting the "quick plug" (connected to the insertion portion assembly and having good interchangeability). The endoscope insertion part(s) with different specifications and the hose socket assembly on the endoscope main body are quickly connected in a plug-in mode, and the endoscope insertion part is an interchangeable plug-in combination.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic view of an assembly structure of the electric plug fixing seat and the plug hook in fig. 1;

FIG. 3 is a schematic view of an assembled structure of the seal assembly of FIG. 1;

FIG. 4 is a schematic view of the assembled receptacle and locking mechanism of FIG. 1 (without the retaining nut);

FIG. 5 is a schematic top view of the socket;

FIG. 6 is a side schematic view of the jam nut of FIG. 4;

fig. 7 is a schematic structural view of the electrical assembly of fig. 1.

Detailed Description

The invention is further illustrated, but not limited, by the following examples in connection with the accompanying drawings.

As shown in fig. 1, 2, 3, 4, 5, 6, and 7, an assembling method of a quick coupling device with an exchangeable insertion portion of an endoscope includes a quick coupling device, the quick coupling device includes a plug assembly 1 assembled with the insertion portion and a socket assembly 2 assembled with a main chassis of the endoscope, and a locking mechanism 3 configured to lock the plug assembly 1 and the socket assembly 2 after the plug assembly 1 is inserted into the socket assembly 2, the plug assembly 1 includes an electrical plug holder 11, a plug hook 12 and a sealing member, one end of the plug hook 12 is fitted around the outer circumference of the electrical plug holder 11, the socket assembly 2 includes a socket 21, the locking mechanism 3 includes a hook pressing ring 31 and a locking nut 32, and the assembling steps are sequentially:

the processing and assembling method of the plug assembly 1 comprises the following steps:

step one, the processing method of the electrical plug fixing seat 11 comprises the following steps:

a. selecting a Ly12 hard aluminum or 303 stainless steel bar material, cutting the hard aluminum bar material into 26-50 mm long,

b. to bar lathing out each other plug-in connection section 111 as an organic whole, interlude 112 and socket connection section 113, the external diameter of plug-in connection section 111 is greater than interlude 112's external diameter, and interlude 112's external diameter is greater than socket connection section 113's external diameter, and simultaneously, plug-in connection section 111 lathes out radial screw, and interlude 112 lathes out spacing flange 1121 and radial screw, makes its semi-manufactured goods drawing requirement that accords with electric plug fixing base 11, specifically does: [ working step 1 ] preferably selecting Ly12 hard aluminum, clamping the hard aluminum on a turning and milling numerical control machine tool through a spring jacket, firstly processing the shape of one end of two large holes, namely 2 (evenly distributed at 180 degrees) small screw holes, firstly roughly turning the end face, roughly drilling the middle small hole, roughly turning the specified size of the minimum hole diameter in the middle, finely turning the specified size of the larger hole diameter in the middle, and finely turning the specified size of the maximum hole diameter in the outer end; at the moment, roughly turning the outer diameter of the thread and a thread relief groove, finely turning the size of the maximum outer diameter, finely turning an annular sealing groove on the end surface of one side of the maximum outer diameter, finely turning an external thread, machining the outer diameter of 2 rows of 8 small screw holes which are uniformly distributed at 90 degrees by using a cutting knife, finely turning to a specified size, and finely turning the size of the minimum outer diameter; step 3, respectively drilling 2 screw holes on the side wall with the large outer diameter on a turning and milling machine tool, and then drilling 8 small screw holes on the middle outer diameter; step 4, cutting off the lower semi-finished parts; turning the semi-finished part by 180 degrees, taking the maximum outer diameter as a reference, clamping the semi-finished part on a spring chuck of a lathe, paying attention to 1 not clamping the outer diameter of a thread, clamping the maximum outer diameter and paying attention to 2, namely, clamping the chuck with positioning references for the center and the end surface of the part, finely boring the size of the hole diameter on the outermost side, finely turning the end surface and correspondingly turning all acute angles to finish machining,

step two, the processing method of the plug hook 12 comprises the following steps:

a. spring steel or a 304 stainless steel pipe material is selected, quenched and tempered after being processed, cut into 30 mm-50 mm long,

b. utilize the turning and milling digit control machine tool to process a plurality of counter bores, then finish turning according to the drawing requirement and process the elasticity jack catch, cut the part with the cutting lathe tool, follow it according to horizontal position and location centre gripping on the wire cut electrical discharge machining dress, through the wire cut electrical discharge machining lathe turning out along two or four elasticity jack catches 121 of its circumferencial direction equipartition, make it accord with the semi-manufactured goods drawing requirement of plug pothook 12, plug pothook 12 still processes out radial arch 123 at the tip inner wall of elasticity jack catch when the turning and milling digit control machine tool processes the elasticity jack catch, and the medial surface and the lateral surface of radial arch 123 all process and have the direction inclined plane, when plug fixing base 11 pegs graft with socket 21, radial arch 123 slides along location guide slot 2112 after the card goes into the card hole of socket 21, and the direction inclined plane plays the guiding orientation effect at grafting in-process, specifically is: firstly, turning a milling numerical control machine tool to process, and firstly, turning an end face; roughly turning an inner hole and an outer diameter; step 2, drilling 8 small holes and counter bores on the side wall of the outer diameter of the part according to the requirement of drawing uniform distribution; finish turning the sizes of the special-shaped apertures (all acute angles are blunted) of the inner side clamping jaw and the clamping jaw head according to the drawing requirements; step 4, cutting off the parts by a cutting knife; step 5, clamping an end head with a small threaded hole at the outer side of one end of a part on a special tool fixture which is horizontally placed on a tool table of a linear cutting machine tool by using a special tool fixture for linear cutting (the end head is a square fixture, and each square surface of the special tool fixture can be used as a reference surface for positioning), pressing and fixing a long bolt hooked by a nail groove of the table and a pressing plate, arranging a square reference block with a positioning reference at one side (according to four-equal-part line cutting on a drawing), cutting through groove parts above and below the part, loosening the pressing plate to turn the special tool fixture on an extrusion surface for 90 degrees and tightly attach to one side surface of the square reference block, pressing the special tool fixture by using the pressing plate, fastening a pressing plate nut, fixing the part, and then finishing line cutting of the other group of groove types of the part according to the relevant requirements of the drawing, the processing of four groups of elastic clamping jaw heads is completed,

step three, the processing method of the sealing assembly comprises the following steps:

the plug assembly 1 further comprises a sealing component formed by a plug protecting sleeve 14 and a protecting sleeve shell 15, the processing and assembling method of the plug assembly 1 further comprises a processing step of the sealing component, and the processing modes of the sealing component are two:

the first processing mode is specifically as follows: step a, processing a semi-finished product drawing requirement which meets the protection sleeve shell 15 on a numerical control lathe or a common lathe, step b, placing a rubber raw material in a vulcanization mold, vulcanizing, processing a plug protection sleeve 14, then bonding the plug protection sleeve 14 and the protection sleeve shell 15 into an integrated structure by using an adhesive to form a sealing component,

the second processing mode is specifically as follows: step a, processing a semi-finished product which meets the drawing requirements of the protective cover shell 15 on a numerical control lathe or a common lathe, step b, firstly coating a layer of coupling agent on the periphery of one end of the protective cover shell 15, then placing the protective cover shell 15 and a rubber raw material into a vulcanization mold, and then vulcanizing to form a sealing component with an integrated structure,

a sealing groove is processed on the other side surface of the limiting flange 1121, a sealing ring is arranged in the sealing groove, a positioning step of the inner cavity of the protective sleeve shell 15 is in sealing connection with the other side surface of the limiting flange 1121, a sealing groove is processed on the other end surface of the protective sleeve shell 15, the sealing ring is arranged in the sealing groove, the other end surface of the protective sleeve shell 15 is in sealing butt joint with the locking nut 32, the sealing ring is arranged on the periphery of the connecting ring behind the inserting part and is in sealing connection with the inner wall of the electric plug fixing seat 11,

step four, the assembling steps of the plug assembly 1 are as follows:

firstly, one end of the plug hook 12 processed in the second step is sleeved on the periphery of the middle section 112 of the electrical plug fixing seat 11, the plug hook 12 is abutted against one side surface of the limit rib 1121 of the middle section 112, a fastening piece is inserted into a counter bore of the plug hook 12 and screwed into a radial screw hole of the middle section 112, so as to complete the assembly of the plug assembly 1,

secondly, a rear adapter ring 41 of the insertion part 4 is arranged in an inner hole of the insertion part connecting section 111, and a fastening piece is screwed into a radial screw hole of the insertion part connecting section 111 to be connected with the rear adapter ring;

sealing component passes insertion part 4, and electric plug fixing base 11 and plug pothook 12 are located the 15 inner chambers of lag shell, simultaneously the one end and the 111 tight fits of insertion part linkage segment of lag shell 15, and the location step of 15 inner chambers of lag shell processing offsets with the another side of the spacing flange 1121 of interlude 112 to and the other end and the lock nut 32 of lag shell 15 offset, accomplish sealing component and electric plug fixing base 11's assembly.

Secondly, the processing method of the socket assembly 2 comprises the following steps:

step one, the processing method of the socket 21 comprises the following steps:

a. selecting 303 stainless steel or Hpb59-1 brass, cutting into 30-60 mm long,

b. a plug connecting section 211, a locking connecting section 212 and an endoscope main case connecting section 213 which are connected into a whole are processed on a turn-milling numerical control machine tool, two or four block holes 2111 and positioning guide grooves 2112 are processed in the circumferential direction of the plug connecting section 211, the positioning guide grooves 2112 are positioned at the outer sides of the block holes 2111, the number of the elastic claws 121 is equal to that of the block holes 2111 and the positioning guide grooves 2112, the positioning guide grooves 2112 are also positioning grooves for ensuring that an electric plug 13 and an electric socket 22 of an internal electric assembly are connected, pin shaft grooves 2121 and long grooves 2122 are processed on the locking connecting section 212, a flange 2131 is processed on the endoscope main case connecting section 213 to meet the requirement of a semi-finished drawing of the socket 21, a sealing groove is processed on the turn-milling numerical control machine tool on the outer peripheral wall of the locking connecting section 212 of the socket 21, and a sealing ring is arranged in the sealing groove to ensure that the locking nut 32 is connected with the locking connecting section 212 in a sealing way, the method specifically comprises the following steps:

step 1, finishing the processing of the part by turning and milling a numerical control machine tool, and roughly turning an end face, a hole with the smallest middle part of a rough drill, an inner diameter and an outer diameter and a multi-start thread by using an end face lathe tool and an inner diameter and an outer diameter lathe tool; step 2, drilling eccentric small holes around the middle small hole; and then turning a ring groove with the outer diameter of the inner side of the small head elongated slot on the drawing. Step 3, milling four uniformly distributed axial long grooves on the outer wall, drilling holes at related positions of the outer wall, and then milling, wherein the long grooves at the small end of the part are processed according to the position of a drawing; milling four through hole straight grooves (according to a drawing) at the rear parts of the four long grooves, milling a through hole straight groove at the position which is parallel to the axis and corresponds to the axis of one of the grooves which are divided into four equal parts according to the drawing, drilling holes on the outer wall, and then drilling holes on the outer wall, wherein the through hole straight groove is a pin shaft groove which runs front and back, namely is positioned, of the clamping hook pressing sleeve according to the drawing; step 6, milling 1 long groove (waist groove) on the outer wall circumference of the ring part of the outer diameter of the outer side of the multiple threads, drilling holes according to the relevant positions of a drawing, and then milling the waist groove; step 7, finely turning the end face, finely turning the inner diameter and the outer diameter, finely turning multi-head inner hole threads, and finely turning common triangular external threads (using threading tools) on the inner side of the large outer diameter; and cutting off the part by using a cutting lathe tool according to the total length of the drawing and the requirement. Before cutting, all acute angles are blunted, and the processing of the workpiece is finished;

it should be noted that: the size of the connection joint of the outer diameter of the socket connecting section 113 of the electrical plug fixing seat 11 and the small hole at the end of the plug connecting section 211 of the socket 21 is matched, and the connection joint is gapless precise fit and is also one of the positioning points for connecting the front part and the rear part of the plug assembly 1 and the socket assembly 2.

The socket connecting section 113 and the plug connecting section 211 are in gapless precise size fit connection, the socket connecting section 113 can be inserted into and pulled out of an inner hole of the socket 21, after or before the plug assembly 1 is inserted into or pulled out of the socket assembly 2, the socket connecting section 113 can play a role of positioning an interface when being connected in front and back, can not loosen after connection, can achieve the positioning or fixing effect, is a reference point for ensuring a mechanical strength connecting position, and is a high-strength assembly after insertion connection. The invention has the advantages that: firstly, the coaxiality of the axial lead after the quick connector is connected can be ensured; secondly, the plug structure at the front part of the quick connector is ensured to have enough strength after being connected with the socket structure at the rear part, namely the stability of the electric signal of the electric plug component after the quick connector is connected is ensured, the reliability and the durability of the product are effectively ensured, and the service life of the product is prolonged.

Thirdly, a machining method of the locking mechanism 3 comprises the following steps:

step one, the processing method of the hook clamping ring 31 comprises the following steps:

a. selecting 303 stainless steel or Hpb59-1 brass,

b. on the turn-milling digit control machine tool or utilize the radial counter bore of powder injection processing pothook clamping ring 31 and with the screw of radial counter bore coaxial arrangement to and the external screw thread on the outer wall, make its semi-manufactured goods drawing requirement that accords with pothook clamping ring 31, specifically do:

step 1, processing a turning and milling numerical control machine tool (or performing powder injection processing by using stainless steel powder), wherein in the step of the turning and milling numerical control machine tool, a middle hole is drilled and processed firstly, then an end face is turned, then an inner hole lathe tool is used, an outer diameter lathe tool is used for roughly turning the outer diameter of an inner hole, and then a drill bit is used for drilling a small hole on the side wall of the outer diameter; finely turning the outer diameter of the inner hole; cutting the whole part by using a cutting lathe; then the inner hole thread on the side wall is processed by a special tapping machine tool, all acute angles are inverted, after the mechanical processing of parts is finished, the surface treatment is carried out on other materials except stainless steel materials,

step two, the processing method of the locknut 32 comprises the following steps:

a. selecting hard aluminum with the model number of Ly12 or stainless steel with the model number of 303 or round bar stock with the model number of HPB59-1 brass,

b. the internal thread and the radial screw hole that set up along its axial and along the radiating groove piece 321 of its circumferencial direction evenly arranged are processed out on the turn-milling digit control machine tool, make it accord with lock nut 32's semi-manufactured goods drawing requirement, specifically do:

step 1, machining on a turning and milling numerical control machine tool, namely firstly drilling a middle hole, roughly turning a middle small hole, roughly turning a multi-head screw hole and a thread, then drilling two small screw holes and an outer side hole on the side wall of the outer diameter, then using a side power head of the numerical control machine tool to clamp a milling cutter, and milling a heat dissipation slot fin on the outer diameter; finely turning a small hole in the center; and finish turning the multiple thread; chamfering the relevant acute angle; cutting off the part according to the length requirement of the drawing by using a cutting lathe tool, and processing the size and the form and position tolerance according to the requirement of the drawing; and then clamping the cut part on mechanical equipment of a small-sized special thread tapping machine, and respectively processing two small screw holes. The part is subjected to anodic oxidation surface treatment to prevent the surface of the part from being oxidized in use.

firstly, the clamping hook pressing ring 31 is sleeved on the periphery of the locking connection section 212 of the socket 21, a pressing ring positioning pin 33 is inserted from a radial counter bore of the clamping hook pressing ring 31 and then screwed into the pin shaft groove 2121, the bottom of the pressing ring positioning pin 33 can slide in the pin shaft groove 2121 without clearance with two sides of the pin shaft groove 2121, the head part does not exceed the radial counter bore, then part of the locking nut 32 is sleeved on the periphery of the locking connection section 212, the rest part with an internal thread is connected with an external thread of the clamping hook pressing ring 31, a nut positioning pin 34 is screwed into a radial threaded hole, the bottom of the nut positioning pin 34 is inserted into the long groove 2122, the bottom of the nut positioning pin 34 can slide in the long groove 2122 without clearance with two sides of the long groove 2122, the assembly of the locking mechanism 3 and the socket 2 is completed, the locking nut 32 is also provided with a radial counter bore on a turn number control machine, and a sealing screw 36 is arranged in the radial counter bore and positioned above the pressing ring positioning pin 33, and a sealant is coated on the surface of the glass substrate,

the locking mechanism 3 further comprises a fixing nut 35, the fixing nut 35 is arranged on the endoscope main case connecting section 213 and is in threaded connection with the endoscope main case connecting section, a radial locking pin arranged on the fixing nut 35 abuts against the peripheral wall of the socket 21, sealing rings are arranged on two side faces of the fixing nut 35, one side face of the fixing nut 35 is tightly attached to the outer side face of the locking nut 32,

secondly, the endoscope mainframe connecting section 213 is assembled with the endoscope mainframe, the flange 2131 is arranged in the inner cavity of the endoscope mainframe and is abutted against the inner wall of the square hole, after the socket connecting section 113 of the electrical plug fixing seat 11 is arranged in the inner hole of the socket 21, simultaneously, the elastic claws 121 slide along the positioning guide grooves 2112 and utilize the elasticity of the elastic claws to enable the end parts of the elastic claws to be respectively clamped into the corresponding clamping holes 2111, the plug-in connection of the plug assembly 1 and the socket assembly 2 is completed, if the plug assembly 1 and the socket assembly 2 need to be separated, the socket 21 is only required to be pulled out from the electrical plug fixing seat 11,

and thirdly, the locking nut 32 rotates clockwise by 90 degrees, the hook pressing ring 31 moves along the axial direction, and the inner hole openings at the end parts of the hook pressing ring are pressed on the outer sides of the elastic clamping jaws 121, so that the locking of the head assembly 1 and the socket assembly 2 is realized, the integral assembly of the quick connector device is also completed, otherwise, if the locking nut 32 rotates anticlockwise by 90 degrees, the hook pressing ring 31 moves outwards and is separated from the pressing of the elastic clamping jaws 121.

The sealing screw 35, the pressing ring positioning pin 33 and the locking nut positioning pin 34 are all made of stainless steel materials and are machined on a common lathe or a numerical control lathe.

The invention also comprises an electric assembly consisting of an electric plug 13 and an electric socket 22, wherein the electric plug 13 is used for being directly connected with a front end CCD or CMOS sensor in the hose or a wire head of an LED illuminating lamp, the electric socket 22 is used for being directly connected with a circuit board for image processing in an electronic circuit in the main case, a monitor, a power supply of an LED and other related circuits, and the electric assembly can electrically connect the electric part of the plug-in part with the electric part of the endoscope main case, and the specific processing and assembling steps are as follows:

the plug assembly 1 also comprises an electric plug 13, a circular connecting table is processed in an inner hole of the electric plug fixing seat 11 by using a turning and milling numerical control machine tool in the processing process,

in the assembly step of the plug assembly 1, before the electrical plug fixing seat 11 is connected with the plug-in part rear connecting ring 41, the electrical plug 13 is firstly installed in the inner hole of the electrical plug fixing seat 11 and is connected with the circular connecting table into a whole through a fastener, specifically: the electric plug 13 is arranged from the opening of the socket connecting section 113, four through holes are uniformly distributed on the circular connecting table, four screw holes are formed in the electric plug 13, and the fastening piece is screwed in from the opening of the inserting part connecting section 111, so that the flange plate of the electric plug 13 is attached to the end surface of the circular connecting table, and the assembly of the electric plug 13 and the electric plug fixing seat 11 is completed;

secondly, the socket assembly 2 also comprises an electric socket 22, a flange connecting step is processed in an inner hole of the socket 21 by a turning and milling numerical control machine tool in the processing process,

the processing method of the socket assembly 2 further comprises a second step of installing the electric socket 22 into the inner hole of the socket 21 and connecting the electric socket with the flange connecting step into a whole through a fastener, and specifically comprises the following steps: the electric socket 22 is arranged from an opening of the plug connecting section 211, four screw holes are uniformly distributed on the flange connecting step, four fasteners are screwed in from an opening of the endoscope main case connecting section 213, and the flange of the electric socket 22 is attached to the end face of the flange connecting step to complete the assembly of the electric socket 21 and the electric socket 22;

and in the assembling and connecting step of the quick connector device, the electrical connection between the electrical plug 13 and the electrical socket 22 is simultaneously completed in the plug-in process of the electrical plug fixing seat 11 and the electrical socket 21, when the electrical plug 13 and the electrical socket 22 are plugged, the plug-in force is generated occasionally, and the circular connecting table and the flange connecting step can bear the plug-in force.

What needs to be added is that: as shown in fig. 7, description 1, the electrical plug 13 is installed in the electrical plug holder 11, which is required to be oriented. The electrical plug 13 is provided with a square key pin which is located at the junction with the electrical socket 22 and is oriented before plugging and plays a role in positioning after plugging and connecting. The requirements are as follows: firstly, the square key pin of the electric plug is assembled as an upward position; secondly, the square key pin of the electric plug is required to correspond to an elastic claw 121 on the plug hook 12 and then fixedly connected by a related fastener; third, the position of the insertion portion of the endoscope also coincides with the upward position of the insertion portion of the endoscope, and it is noted that in any of the endoscopes, the insertion portion has a single upward position, and generally, an orientation with an upward angle is designed, and the orientation is defined as an upward position in which an erect image is observed by the endoscope. Normally seen on the display screen of the endoscope. And after the requirements of the first, second and third parts are met, the electric plug and the electric plug seat are assembled and fixed.

The electric socket 22 is arranged in the socket 21 with orientation requirement, and a square key groove correspondingly assembled with a square key pin of an electric plug is arranged at the front. Is oriented before plugging and plays a role in positioning after being connected by plugging. The requirements are as follows: first, the square key slots of the electrical receptacle 22 are also assembled as upward-facing positions; secondly, the square key slot of the electric socket 22 corresponds to a clamping hole 2111 on the socket 21 and is fixedly connected by related fasteners; thirdly, the position of the socket is consistent with the upward direction of the main case of the endoscope, the problem needing attention is the same as the assembly requirement of the electric plug, and after the requirements of the first, second and third connectors are met, the electric socket and the socket are assembled and fixed.

The above assemblies are all used for ensuring the reliability of the assembly of the electric appliance plug and the electric socket and the stability of the electric signal, which is also the requirement of the imaging quality of the endoscope.

The invention has simple processing and assembling method and the advantages that: firstly, the joint designed by the invention is in threaded connection of a screw to a screw hole, the connection mode is convenient to assemble, and the stability and reliability are improved after threaded connection, secondly, the joint designed by the invention is provided with a sealing assembly, the joint can effectively play a role in protection and sealing, even if the joint is slightly dropped, the joint is not influenced, and a plug and a socket can be quickly plugged for use, and the assembled quick joint device has the advantages that:

the connector device of the invention is to realize the purpose that the same flexible endoscope is used, the insertion part with the similar camera performance and the smaller diameter and the shorter specification and the insertion part with the larger diameter and the longer specification can be exchanged and can be quickly pulled out (used or failed) from an endoscope main body (a body main body is replaced), and then a new insertion part to be replaced is quickly connected with the connector seat of the quick connector of the main body of the same endoscope (the insertion part of a spare accessory or the insertion part with the customized different specification diameters or lengths), thereby achieving the purpose that the same industrial flexible endoscope can replace the use range of 2 or more endoscopes. The same endoscope finishes the purposes of overhauling the depth distance of the cavity in the larger equipment and inspecting the small hole and the small gap of the same equipment; if a spare insertion part is additionally arranged, if the endoscope fails in the process of maintenance, the maintenance work can be immediately returned to the inspection work only by replacing one spare insertion part assembly. Has the advantages of avoiding shutdown and production stoppage caused by the fault problem of the maintenance instrument;

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims

1. A method for assembling a quick coupling device with an exchangeable insertion part of an endoscope, comprising the steps of: including the quick-operation joint device, the quick-operation joint device include with plug sub-assembly (1) of insertion portion assembly and with socket sub-assembly (2) of endoscope mainframe assembly to and plug sub-assembly (1) and socket sub-assembly (2) cartridge back and locking mechanism (3), plug sub-assembly (1) includes electric plug fixing base (11) and plug pothook (12), the one end suit of plug pothook (12) is in the periphery of electric plug fixing base (11), socket sub-assembly (2) are including socket (21), locking mechanism (3) include pothook clamping ring (31) and lock nut (32), and concrete assembly step is in proper order:

a processing and assembling method of a plug assembly (1) comprises the following steps:

step one, the processing method of the electric plug fixing seat (11) comprises the following steps:

b. one bar is selected and clamped on a turn-milling numerical control machine tool through a spring jacket, an inserting part connecting section (111), a middle section (112) and a socket connecting section (113) which are integrated with each other are lathed on the bar, the outer diameter of the inserting part connecting section (111) is larger than that of the middle section (112), the outer diameter of the middle section (112) is larger than that of the socket connecting section (113), meanwhile, a radial screw hole is lathed on the inserting part connecting section (111), a limiting flange (1121) and a radial screw hole are lathed on the middle section (112), so that the bar meets the requirement of semi-finished drawing of an electric plug fixing seat (11),

step two, the processing method of the plug hook (12) comprises the following steps:

b. a plurality of countersunk holes are machined by a turning and milling numerical control machine tool, then elastic clamping jaws are finely turned according to the drawing requirements, a cutting lathe tool is used for cutting off parts, then the parts are positioned and clamped on a linear cutting tool according to the horizontal position, two or four elastic clamping jaws (121) which are uniformly distributed along the circumferential direction are machined by a linear cutting machine tool, so that the semi-finished drawing requirements of the plug clamping hook (12) are met,

step three, the assembling steps of the plug assembly (1) are as follows:

firstly, one end of the plug hook (12) processed in the second step is sleeved on the periphery of the middle section (112) of the electric plug fixing seat (11), the plug hook (12) is abutted against one side surface of the limiting flange (1121) of the middle section (112), a fastening piece is inserted into a counter bore of the plug hook (12) and screwed into a radial screw hole of the middle section (112) to complete the assembly of the plug assembly (1),

secondly, a rear connecting ring of the insertion part is arranged in an inner hole of the connection section (111) of the insertion part, and a fastening piece is screwed into a radial screw hole of the connection section (111) of the insertion part to be connected with the rear connecting ring;

secondly, the processing method of the socket assembly (2) comprises the following steps:

step one, the processing method of the socket (21) comprises the following steps:

b. a plug connecting section (211), a locking connecting section (212) and an endoscope mainframe box connecting section (213) which are connected into a whole are processed on a turn-milling numerical control machine tool, two or four clamping holes (2111) and a positioning guide groove (2112) are processed in the circumferential direction of the plug connecting section (211), the positioning guide groove (2112) is positioned at the outer side of the clamping hole (2111), a pin shaft groove (2121) and a long groove (2122) are processed on the locking connecting section (212), a flange (2131) is processed on the endoscope mainframe box connecting section (213) and meets the requirement of a semi-finished product drawing of a socket (21),

thirdly, a machining method of the locking mechanism (3) comprises the following steps:

step one, the processing method of the clamping hook pressing ring (31) comprises the following steps:

a. the stainless steel or the brass is selected,

b. the radial counter bore of the clamping hook pressing ring (31), the screw hole which is coaxially arranged with the radial counter bore and the external thread on the outer wall are processed on a turning and milling numerical control machine tool or by powder injection so as to meet the requirement of the semi-finished product drawing of the clamping hook pressing ring (31),

step two, the machining method of the locking nut (32) comprises the following steps:

a. selecting a round bar material of duralumin or stainless steel or brass,

b. processing internal threads and radial threaded holes which are arranged along the axial direction of the turning and milling numerical control machine tool to enable the turning and milling numerical control machine tool to meet the requirement of a semi-finished product drawing of a locking nut (32);

firstly, the clamping hook pressing ring (31) is sleeved on the periphery of a locking connection section (212) of a socket (21), a pressing ring positioning pin (33) is inserted from a radial counter bore of the clamping hook pressing ring (31) and then screwed into a pin shaft groove (2121), the bottom of the pressing ring positioning pin (33) can slide in the pin shaft groove (2121), the head part of the pressing ring positioning pin does not exceed the radial counter bore, then part of the locking nut (32) is sleeved on the periphery of the locking connection section (212), the rest part with an internal thread is connected with an external thread of the clamping hook pressing ring (31), a nut positioning pin (34) is screwed into the radial threaded hole, the bottom of the nut positioning pin (34) is inserted into a long groove (2122), the bottom of the nut positioning pin (34) can slide in the long groove (2122), and the assembly of a locking mechanism (3) and the socket (2) is completed,

secondly, the endoscope mainframe connecting section (213) is assembled with the endoscope mainframe, the flange (2131) is arranged in the inner cavity of the endoscope mainframe and is abutted against the inner wall of a square hole of the endoscope mainframe, after the socket connecting section (113) of the electrical plug fixing seat (11) is arranged in an inner hole of the socket (21), the elastic claw (121) slides along the positioning guide groove (2112) and utilizes the elasticity of the elastic claw to enable the end part of the elastic claw to be respectively clamped into the corresponding clamping hole (2111) to complete the plug-in mounting of the plug assembly (1) and the socket assembly (2), if the plug assembly (1) and the socket assembly (2) need to be separated, the socket (21) only needs to be pulled out from the electrical plug fixing seat (11),

and thirdly, the locking nut (32) rotates clockwise by 90 degrees, the clamping hook pressing ring (31) moves along the axial direction, the inner hole opening of the end part of the clamping hook pressing ring is pressed on the outer sides of a plurality of elastic clamping jaws (121), the locking of the head assembly (1) and the socket assembly (2) is realized, the integral assembly of the quick connector device is also completed, otherwise, if the locking nut (32) rotates anticlockwise by 90 degrees, the clamping hook pressing ring (31) moves outwards and is released to press the elastic clamping jaws (121).

2. The method of assembling a quick coupling device for interchangeable insertion portions of an endoscope according to claim 1, wherein: the electric connector also comprises an electric assembly consisting of an electric plug (13) and an electric socket (22), and the specific processing and assembling steps are as follows:

firstly, a circular connecting table is processed in an inner hole of an electric plug fixing seat (11) by utilizing a turning and milling numerical control machine,

in the assembling step of the plug assembly (1), before the electric plug fixing seat (11) is connected with the rear connecting ring of the inserting part, the electric plug (13) is firstly installed in an inner hole of the electric plug fixing seat (11) and is connected with the circular connecting table into a whole through a fastener, so that the assembly of the electric plug (13) and the electric plug fixing seat (11) is completed;

secondly, in the processing process of the socket (21), a flange connecting step is processed in the inner hole by using a turning and milling numerical control machine,

the machining method of the socket assembly (2) further comprises a second step of installing the electric socket (22) into an inner hole of the socket (21) and connecting the electric socket with the flange plate into a whole through a fastening piece to complete the assembly of the socket (21) and the electric socket (22);

and in the assembling and connecting step of the quick joint device, the electrical connection of the electrical plug (13) and the electrical socket (22) is completed simultaneously in the plug-in process of the electrical plug fixing seat (11) and the electrical socket (21).

3. The method of assembling a quick coupling device for interchangeable insertion portions of an endoscope according to claim 1, wherein: the plug assembly (1) further comprises a sealing assembly consisting of a plug protecting sleeve (14) and a protecting sleeve shell (15), the processing and assembling method of the plug assembly (1) further comprises the processing step of the sealing assembly, and the processing modes of the sealing assembly are two:

the first processing mode is specifically as follows: step a, processing a semi-finished product drawing requirement which meets the shell (15) of the protective sleeve on a numerical control lathe or a common lathe, step b, placing a rubber raw material in a vulcanization mold, vulcanizing, processing a plug protective sleeve (14), then bonding the plug protective sleeve (14) and the protective sleeve shell (15) into an integrated structure by using an adhesive to form a sealing component,

the second processing mode specifically comprises the following steps: step a, processing a semi-finished product drawing requirement which meets the requirement of the protective sleeve shell (15) on a numerical control lathe or a common lathe, and step b, firstly coating a layer of coupling agent on the periphery of one end of the protective sleeve shell (15), then placing the protective sleeve shell (15) and a rubber raw material into a vulcanization mold, and then vulcanizing to form a sealing component with an integrated structure;

the assembling step of the plug assembly (1) further comprises the following steps: the sealing assembly penetrates through the insertion part, the electric plug fixing seat (11) and the plug clamping hook (12) are located in an inner cavity of the protective sleeve shell (15), meanwhile, one end of the protective sleeve shell (15) is tightly matched with the insertion part connecting section (111), a positioning step processed in the inner cavity of the protective sleeve shell (15) is abutted to the other side face of the limiting blocking edge (1121) of the middle section (112), the other end of the protective sleeve shell (15) is abutted to the locking nut (32), and the assembly of the sealing assembly and the electric plug fixing seat (11) is completed.

4. The method of assembling a quick coupling device for interchangeable insertion portions of an endoscope according to claim 1, wherein: when the turning and milling numerical control machine tool is used for machining the elastic claw, the plug hook (12) is also machined to form a radial protrusion (123) on the inner wall of the end part of the elastic claw, a guide inclined plane is machined on the inner side face and the outer side face of the radial protrusion (123), when the plug fixing seat (11) is plugged with the socket (21), the radial protrusion (123) slides along the positioning guide groove (2112) and then is clamped into a clamping hole of the socket (21), and the guide inclined plane plays a role in guiding and positioning in the plugging process.

5. The method of assembling a quick coupling device for interchangeable insertion portions of an endoscope according to claim 1, wherein: the locking nut (32) is also used for processing heat dissipation groove pieces (321) uniformly arranged along the circumferential direction of the locking nut by using a milling cutter on a turn-milling numerical control machine tool.

6. The method of assembling a quick coupling device for an interchangeable insert part of an endoscope according to claim 3, wherein: the other side face of spacing flange (1121) machine goes out the seal groove, and installs the sealing washer in the seal groove, makes the location step of lag shell (15) inner chamber realize sealing connection with the another side of spacing flange (1121), machine on the other end terminal surface of lag shell (15) and process out the seal groove, and is equipped with the sealing washer in this seal groove, makes the other end terminal surface of lag shell (15) and lock nut (32) sealed butt, the flange periphery is equipped with the sealing washer behind the portion of inserting and realizes sealing connection with the inner wall of electric plug fixing base (11).

7. The method of assembling a quick coupling device for interchangeable insertion portions of an endoscope according to claim 1, wherein: a sealing groove is processed on the outer peripheral wall of the locking connecting section (212) of the socket (21) on a turn-milling numerical control machine tool, and a sealing ring is arranged in the sealing groove, so that the locking nut (32) is in sealing connection with the locking connecting section (212).

8. The method of assembling a quick coupling device for interchangeable insertion portions of an endoscope according to claim 1, wherein: and the locking nut (32) is also provided with a radial counter bore on a turn-milling numerical control machine tool, a sealing screw (36) is arranged in the radial counter bore and above the pressing ring positioning pin (33), and a sealing glue is coated.

9. The method of assembling a quick coupling device for interchangeable insertion portions of an endoscope according to claim 1, wherein: locking mechanism (3) still include fixation nut (35), fixation nut (35) dress is on endoscope mainframe box linkage segment (213) and rather than threaded connection, and the radial locking pin that is equipped with on fixation nut (35) offsets with the periphery wall of socket (21), all be equipped with the sealing washer on the both sides face of fixation nut (35), and a side of fixation nut (35) is tightly laminated on the lateral surface of locking nut (32).