TWI659722B - Connection structure of tube endoscope - Google Patents

Abstract

A tube connecting structure for an endoscope includes: a neck connecting member having a first connecting portion connected to a flexible wire; a cable connecting member having a second connecting portion connected to the cable connecting member; A hard cable, the flexible wire and the hard cable are electrically connected to a circuit board; a connection cover has a third through hole penetrating therethrough, a joint portion is provided in the third through hole, and the neck is connected The first connection part is connected to the connection part with its first connection part, the cable connection part is connected to the connection part with its second connection part, the neck connection part is separated from the cable connection part by a predetermined distance, and A reserved space is formed between them.

Description

Connection structure of tube endoscope

The present invention relates to an endoscope, and in particular, relates to a connecting structure for a tube portion of an endoscope.

Existing industrial endoscopes are mainly connected to a flexible cable at the front end of a hard cable through a transition structure. A lens group is connected to the front end of the tube, and the flexible cable is used to pass through the tube. It is connected with the hard cable inside, and can transmit the image data captured and captured by the lens group, and return it to a monitor for the staff to watch the image. In the process of using the endoscope, the soft cable is used to drive the soft Tube, so that the endoscope can extend into the equipment or the workpiece, and follow the structure of the equipment or the workpiece; however, the soft and hard cable transfer structure of the endoscope is known by a first half shell and a The second half shells are connected by adhesive bonding. In order to avoid excessively long flexible wires, they must be squeezed into the hose, interfere with the structural characteristics of the hose or the steel cable (or rope) for tensile resistance, or be damaged by friction. Usually, the length of the flexible wire cannot be controlled to exceed the length of the hose. However, when the flexible wire is connected to the hard cable, the first half shell is provided at the end of the flexible wire, and the end of the hard cable is connected. With the second half-shell blocking, making the soft electric Cable connection operation is not easy to be hard, soft and hard conventional cable adapter structure through bonding glue disposable assembly structure, less maintenance and reassembled having characteristics, therefore, there is still space for improvement.

The main purpose of the present invention is to provide a reserved space for a flexible wire with a length slightly longer than the length of the hose when the cover is closed through a connection outer cover in the middle, and When loosening and withdrawing, the soft wire, hard cable wire and circuit board are exposed to provide a tube connection structure of an endoscope that can facilitate assembly and maintenance of internal circuits.

In order to achieve the foregoing object, a tube connecting structure of an endoscope according to the present invention is connected with a hard cable, a flexible electric wire and a hose, the hose is sleeved outside the flexible electric wire, and the other end thereof It is connected with a lens assembly, the hard cable and the soft wire are connected to a circuit board, and the circuit board is arranged in the pipe connection structure; the pipe connection structure includes a neck connector with a through A first through hole, the neck connector has a first connecting part outside one end thereof, the neck connector is connected to the hose at the other end thereof, the flexible electric wire penetrates into the first through hole, and is electrically connected To the circuit board; a cable connector having a second through hole penetrating therethrough, the cable connector having a second connecting portion outside one end thereof, the hard cable wire passing through the second through hole and electrically To the circuit board; a connection cover having a third through hole penetrating therethrough, a joint portion is provided in the third through hole, and the neck connector is connected to the joint portion by its first connection portion, The cable connector is assembled to the joint portion with its second connection portion The neck member is connected to the cable connecting member at a predetermined distance, and is connected to the neck portion is formed in a space reserved for the connection between the two cables.

Thereby, the neck connector and the cable connector are connected by the connection cover, and a reserved space is formed between the two, so that the flexible wire with a longer length exceeding the length of the hose can be provided. A part can be accommodated, and the connection cover can be loosened and withdrawn to expose the flexible electric wire, the hard cable wire, and the circuit board, which can provide a large operating space to facilitate assembly or maintenance.

10‧‧‧Pipe connection structure

11‧‧‧ neck connector

111‧‧‧first through hole

112‧‧‧First connection section

113‧‧‧Combination groove

114‧‧‧ convex post

115‧‧‧ convex thread

12‧‧‧ Casing

121‧‧‧ fitting hole

122‧‧‧ flange

13‧‧‧cable connector

131‧‧‧second through hole

14‧‧‧main connector

141‧‧‧Main through hole

142‧‧‧Second connection section

143‧‧‧Locking thread

144‧‧‧Second Retaining Edge

145‧‧‧ convex block

15‧‧‧Sub connector

151‧‧‧ Deputy through hole

152‧‧‧ Butt Thread

16‧‧‧ ring body

161‧‧‧Slotted

17‧‧‧ Connect the cover

171‧‧‧Third through hole

172‧‧‧Combination

1721‧‧‧The first internal thread section

1722‧‧‧Second internal thread section

1723‧‧‧ reserved space

173‧‧‧first barrier

2‧‧‧hard cable

3‧‧‧ flexible wire

4‧‧‧ hose

41‧‧‧spiral steel ring layer

42‧‧‧woven mesh layer

43‧‧‧ Coating

44‧‧‧ Outer spring layer

5‧‧‧ lens assembly

6‧‧‧Circuit Board

FIG. 1 is a schematic diagram of the three-dimensional appearance of an endoscope having a connecting structure of a pipe portion of the present invention.

Fig. 2 is a schematic three-dimensional exploded view of the connecting structure of the tube portion of the endoscope of the present invention.

FIG. 3 is a schematic cross-sectional view of a combined structure of a tube portion of an endoscope of the present invention

FIG. 4 and FIG. 5 are schematic diagrams of assembling the connecting structure of the tube portion of the endoscope of the present invention.

In order to explain the structure and features of the present invention in detail, the following preferred embodiments are described in conjunction with the drawings as follows: As shown in FIG. 1 to FIG. The connection structure 10 of the tube of the sight glass is connected with a hard cable 2, a flexible wire 3 and a hose 4. The hose 4 is sleeved outside the flexible wire 3, and the other end is connected with a lens assembly 5 The hard cable 2 and the flexible wire 3 are connected to a circuit board 6, which is arranged in the pipe connection structure 10; the pipe connection structure 10 mainly includes a neck connector 11, A cable connector 13 and a connection cover 17. The neck connector 11 also has a set of tubes 12. The cable connector 13 is composed of a main joint 14, a sub joint 15 and a ring 16. It must be put forward to explain that the hard cable 2 passes through the cable connection 13 and is electrically connected to the circuit board 6.

The flexible wire 3 passes through the neck connector 11 and is electrically connected to the circuit board 6.

The hose 4 is composed of a spiral steel ring layer 41, a braided mesh layer 42, a covering layer 43 and an outer spring layer 44 in order from the inside to the outside.

The functions of the circuit board 6, the hard cable 2, the flexible wire 3, and the components and functions of the hose 4 described above are conventional and not the main characteristic technology of this creation, and will not be repeated here.

The neck connecting piece 11 has a first through hole 111 penetrating therethrough. The neck connecting piece 11 has a first connecting portion 112 outside one end thereof, and the other end is recessed to form a coupling groove 113. The first connecting portion 112 As a plurality of external threads, the bottom wall of the combining groove 113 protrudes and extends a convex column 114, the first through hole 111 penetrates the convex column 114, and a convex thread 115 is formed on the outer periphery of the convex column 114, and the convex The thread 115 is screwed into the spiral steel ring layer 41 of the hose 4 (as shown in FIG. 3).

The sleeve 12 has a set of through holes 121 through which the neck connector 11, the spiral steel ring layer 41, the braided mesh layer 42, and the covering layer 43 are passed. One end of 12 has a flange 122 extending outwardly. The flange 122 is embedded in the coupling groove 113 of the neck connector 11. The sleeve 12 is disposed between the neck connector 11 and the connection cover 17. The outer spring layer 44 is sleeved on the outside of the sleeve 12.

The cable connector 13 has a second through hole 131 penetrating through it. The cable connector 13 is composed of a main joint 14, a sub joint 15 and a ring body 16. The main joint 14 has a main through hole 141 penetrating therethrough. The secondary joint 15 has a secondary through hole 151 penetrating therethrough. A second connecting portion 142 is formed outside one end of the main joint 14. The second connecting portion 142 is configured as a plurality of external threads, and a locking thread 143 is formed on the main. Inside the other end of the joint 14, one end of the sub-joint 15 has a pair of butt-threads 152. The sub-joint 15 is screwed together with the locking thread 143 of the main joint 14 through the butt-thread 152. The second through hole 131 is formed by the hole 141 and the auxiliary through hole 151 being mated; the main joint 14 forms a second stop edge 144 with an enlarged outer diameter between the second connecting portion 142 and the locking thread 143. The main joint 14 has a main through hole 141 adjacent to the end of the second connecting portion 142 to form a convex stop 145 with a reduced diameter. The function of the second stop edge 144 and the convex stop 145 will be described later. The ring body 16 is provided as a tapered ring with a large circular diameter at one end and a small circular diameter at the other end. The ring body 16 is on the peripheral side of the ring body. To a small diameter end of the circular slot 161 is provided with a plurality of large diameter circle from the one end of the ring 16 is provided in the Inside the auxiliary through hole 151; the hard cable 2 passes through the auxiliary through hole 151 of the auxiliary connector 15 and the ring body 16 and finally passes through the main through hole 141 of the main connector 14; Stop and limit the hard cable 2 to prevent the hard cable 2 from detaching from the cable connector 13, the ring body 16 is in the auxiliary through hole 151, and the plurality of slots 161 are tightened to clamp the hard cable Cable line 2.

The connecting outer cover 17 has a third through hole 171 penetrating therethrough. The connecting outer cover 17 is provided with a coupling portion 172 in the third through hole 171. The coupling portion 172 is set as a plurality of internal threads, and corresponds to the first through hole. A connecting portion 112 and the second connecting portion 142 form a first internally threaded portion 1721 and a second internally threaded portion 1722. The first internally threaded portion 1721 can be screwed with the first connecting portion 112. The first The two internal thread sections 1722 can be screwed with the second connecting portion 142. When the connecting outer cover 17 is connected with the cable connecting member 13, its ends are stopped and positioned at the second blocking edge 144. In addition, the third through hole 171 of the connecting outer cover 17 forms a first blocking edge 173 with a reduced inner diameter near one end of the first internally threaded section 1721, and the neck connecting piece 11 and the connecting outer cover 17 are grouped together. When connected, the groove side wall of the coupling groove 113 is positioned against the first blocking edge 173 of the connection cover 17.

The first internally threaded section 1721 and the second internally threaded section 1722 are respectively located at two ends of the joint portion 172, and the connecting outer cover 17 connects the neck connector 11 and the cable connector 13 so that the neck portion The connecting member 11 is separated from the cable connecting member 13 by a predetermined distance, and a reserved space 1723 is formed between the neck connecting member 11 and the cable connecting member 13. The joint portion 172 may not be provided with a first internally threaded section 1721 and a second internally threaded section 1722, but may instead be provided with an internally threaded section, and the first connection portion of the neck connector 11 A connecting portion 112 and the cable connecting member 13 and the second connecting portion 142 are connected to both ends of the internally threaded section, and the reserved space 1723 is also formed therebetween, and the connecting portion 172 is configured as an internally threaded section. , Can be imagined from the drawing, so it is no longer represented by a diagram.

With the above structure, the tube connecting structure 10 of the endoscope of the present invention, when assembling or repairing the internal circuit-flexible wire 3, hard cable 2 or circuit board 6, please refer to FIG. 4 and FIG. 5 As shown, the connecting outer cover 17 is rotated to first withdraw the second female thread section 1722 of the connecting outer cover 17 from the second connection portion 142 of the cable connector 13 and its main joint 14, and the cable connector 13 and the connection The outer cover 17 is separated. At this time, the hard cable 2 and the circuit board 6 are exposed (as shown in FIG. 4). Continue to rotate the connection outer cover 17 so that the connection outer cover 17 has a first internal thread section 1721. Withdrawing from the first connecting portion 112 of the neck connecting piece 11, the connecting outer cover 17 moves in a direction close to the lens assembly 5 until the first connecting portion 112 of the neck connecting piece 11 is exposed. The flexible electric wire 3 is also exposed (as shown in FIG. 5), then the flexible electric wire 3, the hard cable 2, and the circuit board 6 can be assembled or repaired in a space without any component obstruction, and are to be assembled or repaired After completion, the connection outer cover 17 is operated in the reverse direction so that the first internally threaded section 1721 and the second internally threaded section 1722 are restarted. In combination with the first connection part 112 of the neck connection part 11 and the second connection part 142 of the cable connection part 13, the length of the reserved space 1723 provided by the connection cover 17 is provided for the length The flexible wire 3 slightly longer than the length of the hose 4 can be accommodated in a portion exceeding the length of the hose 4 so that the length of the flexible wire 3 inside the hose 4 is shorter than that of a conventional endoscope. The length of the wire. According to the present invention, the reserved space 1723 is provided for the flexible electric wire 3 whose length exceeds the outside of the hose 4, thereby preventing the extra length of the flexible electric wire 3 from being inside the hose 4. The spiral steel ring layer 41 is abraded and damaged, or interferes with a steel cable or a pull rope (not shown) for tensile strength.

Due to the structural features of the connection cover 17 of the present invention, the tube connection structure 10 of the endoscope is provided with a reserved space 1723, and the connection cover 17 can be released and exited from the neck Except for the connecting member 11 and the cable connecting member 13, exposing the flexible electric wire 3, the hard cable wire 2 and the circuit board 6 can facilitate assembly and maintenance, and can indeed achieve the purpose of the invention.

Claims (6)

A tube connecting structure of an endoscope is connected with a hard cable, a flexible wire and a hose, the hose is sleeved outside the flexible wire, and the other end is connected with a lens assembly, the hard cable The flexible wire is connected to a circuit board, and the circuit board is arranged in the pipe connection structure. The pipe connection structure includes a neck connection member having a first through hole penetrating through the neck connection member. There is a first connection part outside one end thereof, the neck connection part is connected to the hose at the other end, the flexible wire penetrates into the first through hole and is electrically connected to the circuit board; a cable connection part, The cable connector has a second through hole penetrating therethrough, and the cable connecting member has a second connecting portion outside one end thereof. The hard cable is threaded into the second through hole and is electrically connected to the circuit board. A connection cover is provided. There is a third through hole penetrating therethrough, and a joint portion is provided in the third through hole. The neck connector is connected to the joint portion by its first connection portion, and the cable connector by its second connection portion group. Connected to the joint portion, the neck connector is separated from the cable connector by a predetermined From, the neck member and is connected in a reserved space formed therebetween the cable connecting member. According to the connection structure of the tube of the endoscope according to item 1 of the scope of patent application, wherein: the first connection portion of the neck connection member is set as a plurality of external threads; and the second connection portion of the cable connection member is set as A plurality of external threads; the coupling portion of the connection outer cover is set as a plurality of internal threads, and the plurality of external threads corresponding to the first connection portion forms a first internal thread segment, and a first thread portion corresponding to the second connection portion; Two internally threaded sections, the first internally threaded section may be screwed with the plurality of external threads of the first connection portion, and the second internally threaded section may be screwed with the plurality of external threads of the second connection portion, the connection is external A first blocking edge with a reduced inner diameter is formed on one end adjacent to the first internally threaded section, and a second blocking edge with an enlarged outer diameter is formed behind the second connecting portion of the cable connector, and the neck connector When it is connected with the connection cover, it is stopped and positioned by the first stop edge. When the connection cover is connected with the cable connector, its end is positioned against the second stop edge. According to the connection structure of the tube of the endoscope described in item 2 of the scope of the patent application, the hose is sequentially connected from the inside to the outside by a spiral steel ring layer, a woven mesh layer, a coating layer and an outer spring. The neck connector is recessed at the other end of the neck to form a coupling groove, and a convex column is protruded and extended from the bottom wall of the coupling groove, the first through hole penetrates the convex column, and the outside of the convex column A convex thread is formed on the periphery, and the spiral steel ring layer is screwed with the convex thread. When the neck connection piece is assembled with the connection outer cover, the groove side wall of the coupling groove abuts the first connection cover. A retaining edge; a set of tubes with a set of through holes for penetration, the set of holes for the neck connector, the spiral steel layer, the braided mesh layer, the coating layer to pass through, one end of the sleeve has A flange extending outward is embedded in the coupling groove of the neck connector, the sleeve is disposed between the connection cover and the neck connector, and the outer spring layer is sleeved on the sleeve Tube outside. According to the connection structure of the tube of the endoscope according to item 1 of the scope of the patent application, wherein the cable connector is composed of a main joint and a sub joint, the main joint has a main through hole penetrating through the sub joint The second connection portion is formed outside one end of the main joint. The other end of the main joint has a locking screw thread. One end of the sub joint has a butt screw thread. The butt thread is screwed together with the fixed thread of the main joint, and the main through hole and the auxiliary through hole are mated to form the second through hole. According to the connection structure of the tube of the endoscope described in item 4 of the scope of the patent application, wherein the cable connector further has a ring body, the ring body is set as a tapered ring with a large circular diameter at one end and a small circular diameter at the other end, The ring body is provided with a plurality of grooves on the peripheral side of the ring body from the end with a large diameter to the end with a small diameter. The locking screw thread of the main joint is provided inside the main through hole, and the sub joint The butt thread is provided outside the secondary joint, the ring body is disposed in the secondary through hole, and the hard cable passes through the secondary through hole of the secondary connector and the ring body, and the ring body is covered by the plurality of slots. Tighten and you can clamp the hard cable. According to the connection structure of the tube of the endoscope described in item 4 of the scope of the patent application, wherein the main through hole of the main joint forms a convex stop portion with a reduced diameter at the end adjacent to the second connection portion, The convex stop portion stops and stops the hard cable.