CN217182515U

CN217182515U - Quick connector device with replaceable insertion part of endoscope

Info

Publication number: CN217182515U
Application number: CN202220768874.1U
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: 2022-08-12
Anticipated expiration: 2032-04-02

Abstract

The utility model relates to a quick-operation joint device of removable insertion part of endoscope, its innovation point lies in: include with hose assembly connection's plug part structure and with endoscope mainframe assembly connection's socket part structure, plug part structure includes plug lag, lag shell, plug fixing base and plug pothook, the periphery at the lag shell is established to the plug lag, and the plug fixing base is established in the inside of lag shell, and the periphery at the plug fixing base is established to the plug pothook, socket part structure includes the fixed cover of electric socket and pothook clamping ring, and the fixed cartridge of plug pothook and electric socket, pothook clamping ring suit are in the fixed cover of electric socket periphery and even as an organic whole through the clamping ring locating pin. The utility model discloses can be suitable for the quick plug of multiple different specification insertion portion and endoscope mainframe box and be connected for an endoscope can pair the use with the insertion portion of different specifications, enlarges application range and reduces use cost and reduce follow-up maintenance duration and cost of maintenance.

Description

Quick connector device with replaceable insertion part of endoscope

Technical Field

The utility model relates to a quick-operation joint device, concretely relates to quick-operation joint device of removable insertion portion of endoscope.

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 industries such as petroleum, chemical engineering, aerospace, automobile and the like.

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. Wherein, the nondestructive examination of the oil pipe crack of the relevant fighter engine and the carbon deposition or blockage of the oil nozzle requires the examination of an endoscope of a thin insertion part with the diameter of 3 mm-5 mm and the examination of an endoscope of a short insertion part with the working length of 500 mm-1000 mm; for example, in the research and development and manufacturing process of rocket engines, the regular inspection of the surfaces of turbines, blades, engines, welding seams and the like of airplanes and the interior of combustion cavities or the maintenance inspection of organisms, the inspection of endoscopes with longer insertion parts with the working length of 1200 mm-2000 mm is needed, or the nondestructive inspection of endoscopes with relatively thicker insertion parts with the diameter of 5 mm-8 mm is needed; thus, for non-destructive maintenance and repair of aerospace-related aircraft, 3 sets (at least) to 8 sets of different diameter or length gauge insert endoscopes are required to complete the repair of the entire apparatus.

The prior art endoscopes have the following disadvantages:

first, the main body part and the insertion part of the endoscope main body are not interchangeable and are in a fixed design structure, and the insertion part cannot be pulled out quickly and cannot be replaced by another insertion part with another specification in time for immediate use. In addition, in most endoscopes, the connection between the rear joint (connector) of the insertion tube (hose) and the endoscope main body seat in the prior art is prone to loosening and self-rotation. The reason is that: when the rear joint of the insertion pipe is inserted into the joint hole of the main body seat of the endoscope main body, 3 screw holes are uniformly distributed on the side wall of the connecting hole of the main body seat, wherein 3 designed conical end set screws are fixed in the V-shaped annular groove in the middle section of the outer diameter of the rear joint part of the insertion pipe for connection.

Secondly, the obvious defect of the joint structure is that the screw thread outer diameter of the designed fixing screw cannot be large because the structural space at the joint of the insertion tube and the endoscope main body is small, the designed conical end jacking screw of M2.0 or M2.5 has low fixing strength, and because the insertion tube is long, when the endoscope main body is used, the front end of the long insertion tube is bound to be self-weight to drop, when the endoscope main body is held by hands to operate, the dropping force of the insertion tube is transmitted to the joint of the rear joint of the insertion tube from the front end of the insertion tube and is transmitted to 3 conical end jacking screws of M2.0 or M2.5, the conical end jacking screws are repeatedly used for dozens of times, the conical end jacking screws are also repeatedly stressed or vibrated, even after the fixing screws are coated with oil thread glue, the deformation of the small fixing screws in the V-shaped groove of the joint sometimes occurs to be loosened because of the dropping force of the weight of the insertion part, and the 3 conical end jacking screws are slightly loosened, the insertion tube is then rotated by the adapter. When the insertion tube of the endoscope is used, the insertion tube is loosened or rotated, the use quality of the endoscope is directly influenced, and the endoscope needs to be disassembled, disassembled and overhauled in severe cases.

Thirdly, the transportation vibration can also cause the problem of loose connection at the joint of the rear joint of the inserted pipe.

Fourthly, the rear joint of the insertion tube of the endoscope is loosened, the camera at the most front end of the endoscope follows the insertion tube or rotates left or right, even if the bending angle of the front end bending part is operated, the position of an object to be checked is difficult to find, and the defects that the observation or diagnosis of the image of the object to be checked is influenced by the image shot by the camera at the front end of the endoscope and the image which is deviated or tilted left or right on a display screen are also caused directly. That is, after the insertion part with the camera and the bending part is installed, and the hose connector at the rear end of the insertion part is loosened, the hose connector is fixed in the annular groove on the outer diameter of the rear connector by adopting a small screw, when the hose connector is loosened, the hose connector rotates around the axis every time the hose connector is loosened, after the insertion part of the endoscope is loosened or has a fault of rotation, the bending part rotates along with the loosening and then has a (vertical, horizontal) bend angle, the designed direction can deviate, when the bend angle operation is carried out on the main machine, the bend angle direction deviates along with the bend angle direction, and the deviated camera can not find the position which needs to be detected and the surface of an object which needs to be detected; the most front camera is inserted into the pipe and the angle of the pipe rear joint is changed, and the inclined image is also displayed on the display screen together with the image shot by the camera. Therefore, when the connection structure of the insertion part and the endoscope main body has faults of obvious looseness and serious rotation deviation, the endoscope is difficult to find the surface of the detected object, cannot be used at the moment and needs to return to a manufacturer for overhaul.

Therefore, if the industrial endoscope has some faults in the maintenance process of related production equipment (such as a generator set), such as the damage of an objective lens at the forefront end of the insertion part, the damage of a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor), the damage of a skeleton of a bending part, the damage and the breakage of an insertion tube and the like, the endoscope cannot be used directly, and the endoscope must be delivered to an original production or special maintenance company for repair, otherwise, the maintenance work of the equipment or the production of the related equipment is directly influenced.

Disclosure of Invention

The utility model aims at: the quick connector device of the replaceable insertion part of the endoscope is suitable for quick plug connection of insertion parts with different lengths and different diameters and an endoscope mainframe box, enables one endoscope to be matched with the insertion parts with different specifications for use, is good in universal type, enlarges the application range, reduces the use cost, and reduces the follow-up maintenance time and maintenance cost.

In order to achieve the above purpose, the technical scheme of the utility model is that: the quick connector device with the replaceable insertion part of the endoscope has the innovation points that: comprises a plug part structure which is assembled and connected with a hose and a socket part structure which is assembled and connected with an endoscope main case, the plug part structure and the socket part structure are spliced and locked into a whole,

the plug part structure comprises a plug protecting sleeve, a protecting sleeve shell, an electric plug fixing seat, a plug clamping hook and an electric plug assembly, wherein the head part of the plug protecting sleeve is used for being sleeved on the periphery of the hose, the tail part of the plug protecting sleeve is sleeved on the periphery of one end of the protecting sleeve shell, the electric plug fixing seat is arranged inside one end of the protecting sleeve shell, one end of the electric plug fixing seat is used for being connected with a rear connecting ring of the hose, the electric plug fixing seat is in sealing butt joint with the rear connecting ring of the hose and the protecting sleeve shell, one end of the plug clamping hook is sleeved on the periphery of the electric plug fixing seat, the electric plug assembly is used for being electrically connected with a plug cable of the hose and is arranged inside the electric plug fixing seat,

the socket part structure comprises an electric socket fixing sleeve, a clamping hook pressing ring and an electric socket assembly, one end of the electric socket fixing sleeve is provided with a plurality of clamping holes along the circumferential direction, the other end of the plug clamping hook is provided with a plurality of elastic clamping claws, the other end of the electric socket fixing sleeve is used for being fixedly connected with an endoscope main case, when the plug part structure is spliced with the socket part structure, one end of the electric socket fixing sleeve is inserted into the inner hole of the plug clamping hook and the other end of the electric plug fixing seat can be inserted into the inner hole of the electric socket fixing sleeve, the end part of each elastic clamping claw is clamped into the corresponding clamping hole to enable the electric socket fixing sleeve to be rapidly butted with the plug clamping hook, the electric socket assembly is arranged in the inner hole of the electric socket fixing sleeve and is electrically connected with the electric plug assembly,

the plug part structure is locked with the socket part structure into a whole through a joint locking mechanism, the joint locking mechanism comprises a locking nut, a clamping hook clamping ring is sleeved on the periphery of an electric socket fixing sleeve and connected into a whole through a clamping ring positioning pin, meanwhile, the clamping hook clamping ring is inserted into the inside of the other end of the protective sleeve shell and is pressed in the periphery of an elastic clamping jaw, and the locking nut is arranged on the outer side of the other end of the protective sleeve shell and is sleeved on the periphery of the clamping hook clamping ring and in threaded connection with the clamping hook clamping ring.

In the above technical scheme, connect locking mechanism still includes lock nut locating pin and fixation nut, the fixation nut cover is in the periphery of the fixed cover of electric socket and rather than threaded connection, and fixation nut is located between lock nut and the endoscope mainframe lateral surface and realizes through the sealing washer that corresponds that fixation nut both sides face respectively with the sealed butt of lock nut and endoscope mainframe, fixation nut still tightly fixes as an organic whole with the fixed cover of electric socket through radial cone end lock screw, be equipped with the arc wall on the outer peripheral face of the fixed cover of electric socket, the lock nut locating pin is twisted in the lock nut and its tip is located the arc wall of the fixed cover of electric socket.

In the technical scheme, a plurality of uniformly arranged heat dissipation toothed sheets are arranged in the circumferential direction of the locking nut.

In the technical scheme, the plug protection sleeve comprises a taper sleeve section and a straight sleeve section which are connected into a whole, the periphery of one end of the protection sleeve shell and the inside of the protection sleeve shell are respectively provided with a positioning step, the taper sleeve section of the plug protection sleeve is used for being sleeved on the periphery of a hose, the straight sleeve section is sleeved on the positioning step on the periphery of one end of the protection sleeve shell, the straight sleeve section is tightly matched with the protection sleeve shell, the periphery of the electric plug fixing seat is provided with a limiting baffle edge, one side of the limiting baffle edge is tightly attached to the step surface of the positioning step inside the protection sleeve shell, a sealing ring is arranged between one side of the limiting baffle edge and the step surface of the positioning step inside the protection sleeve shell, one end of the electric plug fixing seat is sleeved on the rear connecting ring of the hose and is tightly fixed into a whole through a radial taper end locking screw, a sealing ring is arranged between the electric plug fixing seat and the rear connecting ring of the hose, the plug is sleeved on the periphery of the electric plug fixing seat and is attached to the other side of the limiting baffle edge, and the plug hook and the plug fixing seat are fastened into a whole through a screw.

In the technical scheme, the inside of electric plug fixing base is equipped with the engaging lug, the electric plug subassembly includes electric plug base, contact pin seat core and contact pin, the contact pin is installed on contact pin seat core, and the both ends of contact pin respectively with the plug cable line electrical connection and the electric socket subassembly electrical connection of hose, contact pin seat core is established in the hole of electric plug base, and the connector that electric plug base both ends were equipped with respectively through electric plug screw and engaging lug fixed connection, the head of electric plug screw is close to the back clamping ring of hose.

In the above technical scheme, the tip of the elasticity jack catch of plug pothook is equipped with the jack catch head, and is equipped with radial arch on the inner wall of jack catch head, radial bellied lateral surface and medial surface all are equipped with the direction inclined plane, radial bellied card is gone into in the jack catch.

In the technical scheme, the periphery of one end of the electric socket fixing sleeve and the outer side of the clamping hole are provided with a plurality of positioning guide grooves, and the radial protrusion of the jaw head slides along the positioning guide grooves and is clamped into the clamping hole.

In the technical scheme, the other end of the electric plug fixing seat is provided with the limiting plug, when the plug part structure is spliced with the socket part structure, one end of the electric socket fixing sleeve is inserted into the inner hole of the plug clamping hook, and the limiting plug is inserted into the inner hole of the electric socket fixing sleeve.

In the technical scheme, the end part of the clamping hook pressing ring is provided with a pressing head, and the pressing head is inserted into the other end of the protective sleeve shell and is pressed on the periphery of the elastic clamping jaw.

In the technical scheme, the electric socket assembly comprises an electric socket fixing screw, an electric plug socket and a socket cable, a connecting block which is connected with the electric socket fixing sleeve into a whole is arranged in an inner hole of the electric socket fixing sleeve, the socket cable is arranged on the electric plug socket and electrically connected with the electric plug socket assembly, the electric plug socket is fixedly connected with the connecting block through the electric socket fixing screw, and the head of the electric socket fixing screw is close to the tail of the electric plug socket.

The utility model discloses the positive effect who has is: after the quick connector device with the replaceable insertion part of the endoscope is adopted, because the quick connector device comprises a plug part structure which is assembled and connected with the hose and a socket part structure which is assembled and connected with the endoscope main case, the plug part structure and the socket part structure are spliced and locked into a whole,

the plug part structure and the socket part structure are locked into a whole through a joint locking mechanism, the joint locking mechanism comprises a locking nut, a clamping hook pressing ring is sleeved on the periphery of an electric socket fixing sleeve and is connected into a whole through a pressing ring positioning pin, meanwhile, the clamping hook pressing ring is inserted into the inner part of the other end of the protective sleeve shell and is pressed on the periphery of an elastic clamping jaw, the locking nut is arranged on the outer side of the other end of the protective sleeve shell and is sleeved on the periphery of the clamping hook pressing ring and in threaded connection with the clamping hook pressing ring,

because the elastic clamping claws of the plug clamping hooks of the utility model have certain elasticity and can be opened towards the outer side, when in use, the elastic clamping claws of the plug clamping hooks of the plug part structure at the tail part of the insertion part of the endoscope are only needed to be clamped into the clamping holes of the electric socket fixing sleeve, and the elastic clamping claws can be clamped in the corresponding clamping holes in an encircling manner by means of the self resilience of the elastic clamping claws, so that the plug clamping hooks and the electric socket fixing sleeve are spliced, and the clamping hook pressing rings are inserted into the inner part of the other end of the protective sleeve shell and are pressed at the periphery of the elastic clamping claws, thereby completing the assembly connection of the insertion part and the socket part structure of the endoscope mainframe box;

the locking nut is rotated 90 degrees clockwise, the clamping hook pressing ring moves forwards along the axial direction of the locking nut and presses the elastic clamping jaw on the outer diameter of the elastic clamping jaw to lock a plug part structure and a socket part structure, otherwise, the locking nut is rotated 90 degrees anticlockwise, the clamping hook pressing ring moves backwards to release the pressing of the elastic clamping jaw, the plug protecting sleeve and the protecting sleeve shell are grabbed and pulled out integrally backwards, and the elastic clamping jaw can be separated from the electric socket fixing sleeve by proper force;

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 utility model discloses a piecing devices is exactly to realize using same soft endoscope, adopt camera performance approximate, the insertion portion of thinner diameter and shorter specification and the insertion portion of thicker diameter and longer specification can exchange and extract (change former use or faulty) insertion portion fast with an endoscope main part (mirror body main part), a new insertion portion that will change again, carry out the high-speed joint with the splice holder of the high-speed joint of the main part of same endoscope again (the insertion portion of a reserve annex or the different specification diameters or the length of ordering), thereby reach same soft endoscope of industry, can replace the purpose of the application 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;

to sum up, the utility model discloses a quick-operation joint device not only will solve the problem that the portion of inserting of endoscope can not exchange the connection rather than the host computer main part, but also will reach and pull out "quick plug" (be connected with "insertion portion composite member"), change one again (be connected with insertion portion composite member and be that "quick plug" that interchangeability is good carries out the plug-in connection with "quick socket" fast. 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 view of an embodiment of the present invention;

FIG. 2 is a schematic structural view of the hose and plug portion of FIG. 1 in structural assembly;

FIG. 3 is a schematic view of the plug holder, plug catch and electrical plug assembly of FIG. 2;

FIG. 4 is a side schematic view of the electrical plug base of FIG. 3;

FIG. 5 is a schematic view of the configuration of the hub portion of FIG. 1 assembled with the endoscope main housing;

FIG. 6 is a schematic top view of the electrical socket fixture sleeve of FIG. 5;

FIG. 7 is a side schematic view of the jam nut of FIG. 5.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, but is not limited thereto.

As shown in fig. 1, 2, 3, 4, 5, 6 and 7, the quick connector device of the replaceable insertion part of the endoscope comprises a plug part structure 1 assembled and connected with a hose and a socket part structure 2 assembled and connected with a main case of the endoscope, wherein the plug part structure 1 is plugged with the socket part structure 2 and locked into a whole,

the plug part structure 1 comprises a plug protecting sleeve 11, a protecting sleeve shell 12, an electric plug fixing seat 13, a plug clamping hook 14 and an electric plug assembly 15, wherein the head part of the plug protecting sleeve 11 is used for being sleeved on the periphery of a hose, the tail part of the plug protecting sleeve is sleeved on the periphery of one end of the protecting sleeve shell 12, the electric plug fixing seat 13 is arranged inside one end of the protecting sleeve shell 12, one end of the electric plug fixing seat is used for being connected with a rear connecting ring of the hose, the electric plug fixing seat 13 is in sealing butt joint with the rear connecting ring of the hose and the protecting sleeve shell 12, one end of the plug clamping hook 14 is sleeved on the periphery of the electric plug fixing seat 13, the electric plug assembly 15 is used for being electrically connected with a plug cable of the hose and is arranged inside the electric plug fixing seat 13,

the socket part structure 2 comprises an electric socket fixing sleeve 21, a hook clamping ring 22 and an electric socket assembly 23, one end of the electric socket fixing sleeve 21 is provided with a plurality of clamping holes 211 along the circumferential direction, the other end of the plug hook 14 is provided with a plurality of elastic clamping claws 141, the other end of the electric socket fixing sleeve 21 is used for being fixedly connected with an endoscope main case, when the plug part structure 1 is plugged with the socket part structure 2, one end of the electric socket fixing sleeve 21 is inserted into the inner hole of the plug hook 14 and the other end of the electric plug fixing seat 13 can be inserted into the inner hole of the electric socket fixing sleeve 21, the end part of each elastic clamping claw 141 is clamped into the corresponding clamping hole 211 to enable the electric socket fixing sleeve 21 to be rapidly butted with the plug hook 14, the electric socket assembly 23 is arranged in the inner hole of the electric socket fixing sleeve 21 and is electrically connected with the electric plug assembly 15,

plug part structure 1 locks as an organic whole with socket part structure 2 through connecting locking mechanism 3, connect locking mechanism 3 to include lock nut 31, pothook clamping ring 22 suit is in the periphery of electric socket fixed cover 21 and even as an organic whole through clamping ring locating pin 24, and simultaneously, pothook clamping ring 22 inserts the inside of the lag shell 12 other end and crimping in the periphery of elasticity jack catch 141, lock nut 31 establishes in the outside of lag shell 12 other end to overlap in the periphery of pothook clamping ring 22 and rather than threaded connection.

As shown in fig. 1 and 5, in order to realize whether the quick plug is locked in place after being butted with the quick socket and improve the operation reliability, the joint locking mechanism 3 further includes a locking nut positioning pin 32 and a fixing nut 33, the fixing nut 33 is sleeved on the periphery of the electric socket fixing sleeve 31 and is in threaded connection with the electric socket fixing sleeve, the fixing nut 33 is positioned between the locking nut 31 and the outer side surface of the endoscope main case and realizes the sealing and abutting of the two side surfaces of the fixing nut 33 with the locking nut 31 and the endoscope main case respectively through corresponding sealing rings, the fixing nut 33 is further fastened with the electric socket fixing sleeve 21 into a whole through a radial conical end locking screw, an arc-shaped groove 212 is arranged on the outer peripheral surface of the electric socket fixing sleeve 21, the locking nut positioning pin 32 is screwed into the locking nut 31 and the end portion thereof is positioned in the arc-shaped groove 212 of the electric socket fixing sleeve 21. After the plug part is inserted into the socket part, the locking nut 31 is rotated 90 degrees to the right (clockwise), the hook pressing ring 22 moves forwards for about 5mm along the axial direction along with the power of the external thread, the hook pressing ring moves onto the outer diameter of the elastic claw, and tightly presses the elastic claws 141 of the plug hook 14 to prevent the elastic claws from moving outwards, otherwise, the locking nut 31 rotates 90 degrees to the left (anticlockwise), the hook pressing ring 22 moves linearly for about 5mm backwards, the hook pressing ring unlocks the pressing of the elastic claws 141, the joint locking mechanism 3 can effectively prevent the loosening or falling of the quick joint after connection due to vibration and other reasons, the locking nut positioning pin 32 represents a locking limit position and an unlocking separation position respectively at two limit positions of the arc-shaped groove 212 of the electric socket fixing sleeve 21, and the fixing nut 33 and the locking nut 31 form a double nut combination, the locking firmness of the locking mechanism is enhanced.

As shown in fig. 7, in order to provide the lock nut 31 with a heat dissipation function for protecting the internal circuit board, a plurality of heat dissipation fins 311 are uniformly arranged in a circumferential direction of the lock nut 31.

As shown in fig. 2 and 3, in order to make the structure more reasonable and facilitate the positioning connection of the plug protection cover with the hose and the protection cover housing, the plug protection cover 11 includes a taper sleeve section 111 and a straight sleeve section 112 which are connected into a whole, the periphery of one end of the protection cover housing 12 and the inside thereof are both provided with a positioning step, the taper sleeve section 111 of the plug protection cover 11 is used for being sleeved on the periphery of the hose, the straight sleeve section 112 is sleeved on the positioning step on the periphery of one end of the protection cover housing 12, the straight sleeve section 112 is tightly matched with the protection cover housing 12, the periphery of the electrical plug fixing base 13 is provided with a limiting flange 131, one side of the limiting flange 131 is tightly attached to the step surface of the positioning step inside the protection cover housing 12, a sealing ring is arranged between one side of the limiting flange 131 and the step surface of the positioning step inside the protection cover housing 12, one end of the electrical plug fixing base 13 is sleeved on the rear connecting ring of the hose and tightly fixed into a whole by a radial taper end locking screw, and be equipped with the sealing washer between the back adapter ring of electric plug fixing base 13 and hose, plug pothook 14 cover is in the periphery of electric plug fixing base 13 and with the opposite side laminating of spacing flange 131 to and make plug pothook 14 and electric plug fixing base 13 tightly fix as an organic whole through the screw. The effect that the small subassembly that plug lag 11 and lag shell 12 constitute realized is: the inner hole of the taper sleeve section 111 of the plug protection sleeve 11 can wrap the outer diameter of the hose and is in sealing connection with the hose, and therefore the plug protection sleeve can play a role in sealing protection.

As shown in fig. 2 and 3, for convenience, the connector of front end CCD or CMOS sensor or LED lighting lamp is directly connected with the wire end of hose, the inside of electric plug fixing base 13 is equipped with engaging lug 132, electric plug assembly 15 includes electric plug base 151, contact pin seat core 152 and contact pin 153, contact pin 153 is installed on contact pin seat core 152, and the both ends of contact pin 153 are respectively connected with the plug cable line electrical connection and the electric socket assembly 23 electrical connection of hose, contact pin seat core 152 is established in the hole of electric plug base 151, and the connector that electric plug base 151 both ends were equipped with respectively through electric plug screw 154 and engaging lug 132 fixed connection, the head of electric plug screw 154 is close to the back circle that connects of hose.

As shown in fig. 4, four through holes 1512 penetrating through the hole 1512 or other assemblies for realizing the assembly of the traction cable with the angle of bend of up, down, left and right, and threaded holes 1513 for fixing four screws 154 of the electrical plug are arranged in the circumferential direction of the electrical plug base 151, the four through holes 1512 and the four threaded holes 1513 are arranged in a staggered manner, and a key pin 1511 connected with the electrical socket 232 in a positioning manner is further provided on the electrical plug base 151.

As shown in fig. 3, in order to facilitate positioning connection, a claw head 1412 is disposed at an end of the elastic claw 141 of the plug hook 14, a radial protrusion 1413 is disposed on an inner wall of the claw head 1412, guide slopes 1414 are disposed on an outer side surface and an inner side surface of the radial protrusion 1413, and the radial protrusion 1413 is inserted into the catching hole 211. The guiding inclined plane 1414 on the outer side surface of the radial projection 1413 is used for facilitating the insertion of the radial projection 1413 into the corresponding clamping hole on the electrical socket fixing sleeve 21, and the guiding inclined plane 1414 on the inner side surface is used for facilitating the extraction of the radial projection 1413 and the disengagement of the radial projection 1414 from the clamping hole of the electrical socket fixing sleeve 21.

As shown in fig. 6, in order to make the radial protrusions 1413 be able to be accurately snapped into the corresponding snap holes, a plurality of positioning guide grooves 213 are formed on the outer circumference of one end of the electrical socket fixing sleeve 21 and located outside the snap holes 211, and the radial protrusions 1413 of the claw heads 1412 are slidably snapped into the snap holes 211 along the positioning guide grooves 213.

As shown in fig. 3, in order to make the electrical plug fixing base and the electrical socket fixing sleeve quickly positioned and assembled, the other end of the electrical plug fixing base 13 is provided with a limit plug 134, when the plug part structure 1 is plugged with the socket part structure 2, one end of the electrical socket fixing sleeve 21 is inserted into the inner hole of the plug hook 14 and the limit plug 134 is plugged into the inner hole of the electrical socket fixing sleeve 21. Be connected for gapless accurate size cooperation between spacing plug 134 and the fixed cover 21 of electrical socket, and spacing plug 134 also can insert from the hole of the fixed cover 21 of electrical socket, extract, plug partial structure 1 inserts the back with socket partial structure 2 or before extracting, spacing plug 134 can play the location interface effect when connecting in the front and back, can not become flexible after connecting to can reach location or fixed effect, be the benchmark of guaranteeing to have the mechanical strength junction, also insert and connect the assembly that is a high strength after connecting. The utility model discloses the benefit of designing like this lies in: 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.

As shown in fig. 5, in order to press the elastic claws so that the elastic claws can be tightly clamped into the clamping holes 211 of the electric socket fixing sleeve 21 and enhance the connection firmness between the elastic claws and the electric socket fixing sleeve, the end of the clamping hook pressing ring 22 is provided with a pressing head 221, and the pressing head 221 is inserted into the inner part of the other end of the protective cover shell 12 and is pressed on the periphery of the elastic claws 141.

As shown in fig. 5, in order to facilitate direct connection with the circuit board for image processing, monitor connection, power supply of LED, etc. in the electronic circuit in the main chassis, the electrical socket assembly 23 includes an electrical socket fixing screw 231, an electrical socket 232 and a socket cable 233, the electrical socket fixing sleeve 21 has a connection block 214 integrally connected with the electrical socket fixing screw in its inner bore, the socket cable 233 is disposed on the electrical socket 232 and electrically connected with the electrical plug assembly 15, the electrical socket 232 is fixedly connected with the connection block 214 by the electrical socket fixing screw 231, and the head of the electrical socket fixing screw 231 is close to the tail of the electrical socket 232. The plug base 151 is further provided with a key pin 1511 which is connected with the key groove 234 of the electric socket 232 in a positioning manner.

The utility model discloses a theory of operation:

as shown in fig. 1, the plug part structure 1 is connected to a hose assembly: the insertion part 4 of the endoscope comprises a camera assembly 41, a bending part assembly 42 and a hose 43, wherein the camera assembly 41 comprises a front objective lens group, a CMOS image sensor assembly and an LED illuminating lamp group, the camera assembly 41 is arranged at the head part of the bending part assembly 42, the tail part of the bending part assembly 42 is connected with the front part of the hose 43, a rear connecting ring 431 is arranged at the tail part of the hose 43, the plug part structure 1 is connected with the hose in an assembling way, namely the head part of the plug protecting sleeve 11 is used for being sleeved on the periphery of the hose 43, and one end of the electrical plug fixing seat 13 is connected with the rear connecting ring 431 of the hose 43 through a radial conical end fastening screw 133.

The socket part structure 2 is assembled and connected with the endoscope main case: the endoscope main case assembly 5 comprises a main case 51 and a liquid crystal display 52 arranged on the main case 51, wherein the main case 51 is provided with a square hole for preventing the structure of the socket part from rotating, the other end of the electric socket fixing sleeve 21 is provided with a connecting flange 215, the connecting flange 215 is positioned in the square hole of the main case 51 and is abutted against the inner wall of the main case 51, and the endoscope main case assembly has the advantages that: when the main case is subjected to torque force or left-right rotating force, the joint and the inserting part on the outer side cannot rotate left and right along with the torque force or the left-right rotating force, so that the whole quick joint, the inserting part and the main case at the rear end are fixed in an oriented and positioned mode.

When the insertion part 4 of the endoscope needs to be inserted into the endoscope main case assembly 5, namely, the plug part structure 1 and the socket part structure 2 realize quick insertion, because the elastic claws 141 of the plug hooks 14 have certain elasticity and can be opened towards the outer side, under the action of the outer side surface guide inclined surfaces 1414 of the radial protrusions 1413 of the plug hooks 14, the radial protrusions 1413 slide along the positioning guide grooves 213 and then are clamped into the clamping holes 21 of the electric socket fixing sleeve 21, and the elastic claws 141 have self-resilience, so that the elastic claws 141 can be clamped and hooked in the corresponding clamping holes 211 to realize the insertion of the plug hooks 14 and the electric socket fixing sleeve 21, and the pressing heads 221 of the hook pressing rings 22 are inserted into the inner part of the other end of the protective cover shell 12 and are pressed on the periphery of the elastic claws 141, namely, the quick insertion of two parts can be completed, and simultaneously, the pins 153 of the electric plug assembly 15 are inserted into corresponding pins on the electric socket 232 of the electric socket assembly 23, and realizing electrical connection.

In order to reinforce a secure, secure locking of the two parts, the locking is effected by means of a joint locking mechanism 3: the locking nut 31 rotates 90 degrees rightwards (clockwise), the hook pressing ring 22 moves forwards for about 5mm along the axial direction along with the power of the external threads of the locking nut, the locking nut moves to the outer diameter of the elastic claw 141, the elastic claws 141 of the plug hook 14 are tightly pressed to prevent the elastic claw from moving outwards, otherwise, the locking nut 31 rotates 90 degrees leftwards (anticlockwise), the hook pressing ring 22 moves backwards for about 5mm in a straight line, the hook pressing ring can release the pressing of the elastic claw 141, and the joint locking mechanism 3 can effectively prevent the loosening or falling-off phenomenon after the quick joint is connected due to the reasons of vibration and the like.

The utility model 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;

to sum up, the quick connector device of the present invention not only solves the problem that the insertion portion of the endoscope cannot be connected with the main body of the endoscope in an interchangeable manner, but also achieves the purpose of quickly pulling out the "quick plug" (connected with the "insertion portion assembly") and quickly replacing one "quick plug" (connected with the insertion portion assembly and having good interchangeability) to be quickly connected with the "quick socket", that is, one main case of the endoscope can be quickly replaced with a plurality of replaceable (interchangeable) insertion portions, that is, the purpose of quickly connecting the insertion portions of the endoscope (of several kinds) of different specifications) with the "hose socket assembly" on the endoscope main body of the endoscope in an interchangeable manner, and the advantages of the insertion combination of the endoscope are achieved, for example, for small-hole or small-gap equipment facilities, the insertion portion of the endoscope with a larger thickness cannot be inserted, then the endoscope with a larger diameter can be inserted into the tube, and the endoscope which is quickly replaced by the small diameter insertion tube can be immediately inserted into the device for operation and maintenance, so that the purpose of expanding the use range is realized.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made 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 quick coupling device with an exchangeable insertion part of an endoscope is characterized in that: comprises a plug part structure (1) which is assembled and connected with a hose and a socket part structure (2) which is assembled and connected with an endoscope main case, wherein the plug part structure (1) and the socket part structure (2) are spliced and locked into a whole,

the plug part structure (1) comprises a plug protecting sleeve (11), a protecting sleeve shell (12), an electric plug fixing seat (13), a plug clamping hook (14) and an electric plug assembly (15), the head part of the plug protecting sleeve (11) is used for being sleeved on the periphery of a hose, the tail part of the plug protecting sleeve is sleeved on the periphery of one end of the protecting sleeve shell (12), the electric plug fixing seat (13) is arranged inside one end of the protecting sleeve shell (12), one end of the electric plug fixing seat is used for being connected with a rear connecting ring of the hose, the electric plug fixing seat (13) is in sealing butt joint with the rear connecting ring of the hose and the protecting sleeve shell (12), one end of the plug clamping hook (14) is sleeved on the periphery of the electric plug fixing seat (13), the electric plug assembly (15) is used for being electrically connected with a plug cable of the hose and is arranged inside the electric plug fixing seat (13),

socket part structure (2) are including the fixed cover of electric socket (21), pothook clamping ring (22) and electric socket subassembly (23), the one end of the fixed cover of electric socket (21) is equipped with a plurality of card holes (211) along its circumferencial direction, the other end of plug pothook (14) is equipped with a plurality of elasticity jack catch (141), the other end of the fixed cover of electric socket (21) is used for with endoscope mainframe fixed connection, when plug part structure (1) is pegged graft with socket part structure (2), the one end of the fixed cover of electric socket (21) is inserted behind the hole of plug pothook (14) and the other end of electric plug fixing base (13) can the cartridge in the hole of the fixed cover of electric socket (21), the tip card of every elasticity jack catch (141) is gone into corresponding card hole (211) and is made the fast butt joint of the fixed cover of electric socket (21) and plug pothook (14), electric socket subassembly (23) are established in the hole of the fixed cover of electric socket (21) and with electric plug subassembly (23), (the electric socket subassembly) 15) The electric connection is carried out through the electric connection,

plug part structure (1) locks as an organic whole with socket part structure (2) through connecting locking mechanism (3), connect locking mechanism (3) including lock nut (31), pothook clamping ring (22) suit is in the periphery of the fixed cover of electric socket (21) and even as an organic whole through clamping ring locating pin (24), and simultaneously, inside and the crimping in the periphery of elasticity jack catch (141) of protection cover shell (12) other end are inserted to pothook clamping ring (22), lock nut (31) are established in the outside of protection cover shell (12) other end to the periphery of overlapping in pothook clamping ring (22) and rather than threaded connection.

2. The endoscope exchangeable insertion portion quick-coupling device of claim 1, wherein: connect locking mechanism (3) still include lock nut locating pin (32) and fixation nut (33), fixation nut (33) cover is in the periphery of the fixed cover of electric socket (21) and rather than threaded connection, and fixation nut (33) are located between lock nut (31) and the endoscope mainframe lateral surface and realize through the sealing washer that corresponds that fixation nut (33) both sides face respectively with the sealed butt of lock nut (31) and endoscope mainframe, fixation nut (33) are still as an organic whole tightly through radial cone end locking screw and the fixed cover of electric socket (21), be equipped with arc wall (212) on the outer peripheral face of the fixed cover of electric socket (21), lock nut locating pin (32) twist in lock nut (31) and its tip is located arc wall (212) of the fixed cover of electric socket (21).

3. The endoscope interchangeable insert portion quick connector device of claim 1, wherein: the locking nut (31) is provided with a plurality of radiating fins (311) which are uniformly arranged in the circumferential direction.

4. The endoscope interchangeable insert portion quick connector device of claim 1, wherein: the plug protection sleeve (11) comprises a taper sleeve section (111) and a straight sleeve section (112) which are connected into a whole, positioning steps are arranged on the periphery of one end of the protection sleeve shell (12) and inside the protection sleeve shell, the taper sleeve section (111) of the plug protection sleeve (11) is used for being sleeved on the periphery of a hose, the straight sleeve section (112) is sleeved on the positioning step on the periphery of one end of the protection sleeve shell (12), the straight sleeve section (112) is tightly matched with the protection sleeve shell (12), a limiting baffle edge (131) is arranged on the periphery of the electric plug fixing seat (13), one side of the limiting baffle edge (131) is tightly attached to the step surface of the positioning step inside the protection sleeve shell (12), a sealing ring is arranged between one side of the limiting baffle edge (131) and the step surface of the positioning step inside the protection sleeve shell (12), one end of the electric plug fixing seat (13) is sleeved on a rear connecting ring of the hose and tightly fixed into a whole through a radial taper end locking screw, and be equipped with the sealing washer between the back adapter ring of electric plug fixing base (13) and hose, plug pothook (14) cover is in the periphery of electric plug fixing base (13) and with the opposite side laminating of spacing flange (131) to and make plug pothook (14) and electric plug fixing base (13) tightly fix as an organic whole through the screw.

5. The endoscope interchangeable insert portion quick connector device of claim 1, wherein: the inside of electric plug fixing base (13) is equipped with engaging lug (132), electric plug assembly (15) are including electric plug base (151), contact pin seat core (152) and contact pin (153), contact pin (153) are installed on contact pin seat core (152), and the both ends of contact pin (153) respectively with the plug cable conductor electric connection and electric socket subassembly (23) electric connection of hose, contact pin seat core (152) are established in the hole of electric plug base (151), and the connector that electric plug base (151) both ends were equipped with respectively through electric plug screw (154) and engaging lug (132) fixed connection, the head of electric plug screw (154) is close to the back circle that connects of hose.

6. The endoscope interchangeable insert portion quick connector device of claim 1, wherein: the end of the elastic claw (141) of the plug hook (14) is provided with a claw head (1412), the inner wall of the claw head (1412) is provided with a radial protrusion (1413), the outer side surface and the inner side surface of the radial protrusion (1413) are provided with guide inclined surfaces (1414), and the radial protrusion (1413) is clamped into the clamping hole (211).

7. The endoscope interchangeable insert portion quick connector device of claim 6, wherein: the periphery of the electric socket fixing sleeve (21) one end and the outer side of the clamping hole (211) are provided with a plurality of positioning guide grooves (213), and the radial protrusion (1413) of the clamping claw head (1412) slides along the positioning guide grooves (213) and is clamped in the clamping hole (211).

8. The endoscope interchangeable insert portion quick connector device of claim 1, wherein: the other end of electric plug fixing base (13) is equipped with limit plug (134), when plug part structure (1) is pegged graft with socket part structure (2), the one end of the fixed cover of electric socket (21) is inserted behind the hole of plug pothook (14) and limit plug (134) cartridge is in the hole of the fixed cover of electric socket (21).

9. The endoscope interchangeable insert portion quick connector device of claim 1, wherein: the end part of the clamping hook pressing ring (22) is provided with a pressing head (221), and the pressing head (221) is inserted into the inner part of the other end of the protective sleeve shell (12) and is pressed on the periphery of the elastic clamping claw (141).

10. The endoscope interchangeable insert portion quick connector device of claim 1, wherein: the electric socket assembly (23) comprises an electric socket fixing screw (231), an electric socket (232) and a socket cable (233), a connecting block (214) which is connected with the electric socket fixing sleeve (21) into a whole is arranged in an inner hole of the electric socket fixing sleeve (21), the socket cable (233) is arranged on the electric socket (232) and electrically connected with the electric socket assembly (15), the electric socket (232) is fixedly connected with the connecting block (214) through the electric socket fixing screw (231), and the head of the electric socket fixing screw (231) is close to the tail of the electric socket (232).