CN211460121U - Four-direction bending snake bone of endoscope - Google Patents
Four-direction bending snake bone of endoscope Download PDFInfo
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- CN211460121U CN211460121U CN201922455337.2U CN201922455337U CN211460121U CN 211460121 U CN211460121 U CN 211460121U CN 201922455337 U CN201922455337 U CN 201922455337U CN 211460121 U CN211460121 U CN 211460121U
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Abstract
The utility model relates to a four-direction bending snake bone of an endoscope, which comprises a front segment ring, a rear segment ring and a plurality of middle segment rings connected between the front segment ring and the rear segment ring, one end of the front section ring is provided with a rear elastic clamping shaft head which is provided with a rear elastic groove or a rear elastic through hole, the two ends of each middle section ring are respectively provided with a first elastic clamping shaft head and a second connecting lug clamping ring, the first elastic clamping shaft head is provided with a first elastic groove or a first elastic through hole, one end of the rear section ring is provided with a front connecting lug clamping ring, the rear elastic clamping shaft head of the front section ring is clamped in the second connecting ear clamping ring of the middle section ring adjacent to the front section ring, and the first elastic clamping shaft head of one middle section ring is clamped in the second connecting ear clamping ring of the other middle section ring adjacent to the first elastic clamping shaft head of the other middle section ring. The utility model is not only simple in structure, need not the rivet riveting, production efficiency is high moreover to and low in production cost.
Description
Technical Field
The utility model relates to a snake bone device, in particular to a four-direction bending snake bone of a medical flexible endoscope, belonging to the technical field of medical instruments.
Background
In order to realize head bending and direction changing of the existing endoscope, a metal snake bone joint is arranged in the endoscope, the metal snake bone joint is bent by pulling a control line connected with the metal snake bone joint, the metal snake bone joint is connected with each other by connecting shafts of joints of each section and then axially rotates to work, a shaft with the same direction has positive and negative bending, the positive and negative bending of two shaft planes which are vertical to each other at two shafts respectively has two-direction bending, and four-direction bending angles are obtained, which are generally called four-direction bending angles of an upper direction, a lower direction, a left direction and a right direction.
The snake bone in the prior art comprises a snake bone front section ring, a snake bone middle section ring and a snake bone rear section ring, and the snake bone front section ring, the snake bone middle section ring and the snake bone rear section ring are riveted and connected through rivets in sequence, and due to the rivet riveting connection mode, the structure is complex, the manufacturing cost is high, and the following defects are easy to occur:
firstly, the riveting position of the knuckle ring in the snake bone is deformed if the riveting tool and the axis of the rivet are not on the same axis or the riveting force is too large;
secondly, in the riveting process, if the riveting pressure is too high, the surface of the workpiece is easily damaged or the rivet is deformed or the rivet head is cracked;
thirdly, the riveted workpiece is easy to have the phenomenon of incomplete riveting or insufficient firmness in riveting; therefore, the riveting process of workers has high skill requirements, so that the production efficiency is low, the situation that the riveting quality is not qualified is easy to occur, the phenomenon that rivets fall off sometimes occurs, the defects of final finished products are more, the rejection rate is high, and the production cost is high.
Disclosure of Invention
The utility model aims at: the endoscope four-direction bending snake bone is simple in structure, free of rivet riveting, high in production efficiency and low in production cost.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a four-direction bending snake bone of endoscope, includes anterior segment circle, back segment circle and connects a plurality of middle segment circle between anterior segment circle and back segment circle, and its innovation point lies in:
one end of the front section ring is provided with a rear elastic clamping shaft head which is provided with a rear elastic groove or a rear elastic through hole which are arranged along the axial direction of the front section ring, the inner wall of the front section ring is provided with four first steel wire rope through holes which are uniformly arranged along the circumferential direction of the front section ring,
a first elastic clamping shaft head and a second connecting lug clamping ring are respectively arranged at two ends of each middle section ring, the first elastic clamping shaft head is provided with a first elastic groove or a first elastic through hole which is arranged along the axial direction of the first elastic clamping shaft head, the inner wall of each middle section ring is provided with two second steel wire rope through holes which are uniformly arranged along the circumferential direction of the middle section ring,
one end of the rear section ring is provided with a front connecting lug clamping ring,
the rear elastic clamping shaft head of the front section ring is clamped in the second connecting ear clamping ring of the middle section ring adjacent to the front section ring, the first elastic clamping shaft head of the middle section ring adjacent to the rear section ring is clamped in the front connecting ear clamping ring of the rear section ring, and the first elastic clamping shaft head of one middle section ring is clamped in the second connecting ear clamping ring of the other middle section ring adjacent to the middle section ring.
In the above technical solution, the first elastic chuck head of the middle joint ring has a cross-shaped first elastic groove or a cross-shaped first elastic through hole, and the first elastic groove or the first elastic through hole equally divides the first elastic chuck head into four parts.
In the technical scheme, the rear elastic clamping shaft head of the front section ring is provided with a cross-shaped rear elastic groove or a cross-shaped rear elastic through hole, and the rear elastic groove or the rear elastic through hole equally divides the rear elastic clamping shaft head into four parts.
In the technical scheme, one end of the middle section ring is provided with a first connecting lug which is integrated with the middle section ring, and the first connecting lug is provided with a first elastic clamping shaft head which is integrated with the first connecting lug.
In the technical scheme, one end of the front section ring is provided with a rear connecting lug which is integrated with the front section ring, and the rear connecting lug is provided with a rear elastic clamping shaft head which is integrated with the rear connecting lug.
In the technical scheme, an arc-shaped front wire retaining plate integrated with the front section ring is arranged on the inner side wall of the front section ring, and a cavity defined by the arc-shaped front wire retaining plate and the side wall of the front section ring forms an axial first steel wire rope through hole; the inner side wall of the middle section ring is provided with an arc middle wire retaining plate which is integrated with the middle section ring, and a cavity enclosed by the arc middle wire retaining plate and the side wall of the middle section ring forms an axial second steel wire rope through hole.
The utility model discloses the positive effect who has is: after the four-direction bending snake bone of the endoscope of the utility model is adopted, because one end of the front section ring of the endoscope is provided with a rear elastic clamping shaft head which is provided with a rear elastic groove or a rear elastic through hole which are arranged along the axial direction of the front section ring, the inner wall of the front section ring is provided with four first steel wire rope perforation holes which are evenly arranged along the circumferential direction of the front section ring, the two ends of each middle section ring are respectively provided with a first elastic clamping shaft head and a second connecting lug clamping ring, the first elastic clamping shaft head is provided with a first elastic groove or a first elastic through hole which are arranged along the axial direction of the first elastic clamping shaft head, the inner wall of the middle section ring is provided with two second steel wire rope perforation holes which are evenly arranged along the circumferential direction of the first elastic clamping shaft head, the front connecting lug is arranged at one end of the rear section ring, the rear elastic clamping shaft head of the front section ring is clamped in the second connecting lug clamping ring of the middle section ring which is adjacent to the rear section ring, the first elastic clamping shaft head of one middle section ring is clamped in the second connecting ear clamping ring of the other middle section ring adjacent to the first elastic clamping shaft head; the utility model discloses replaced each part of snake bone device among the prior art and utilized rivet connection structure as an organic whole, the defect of riveted structure among the prior art has been overcome, can not only reduce manufacturing cost under guaranteeing the use quality prerequisite, improve production efficiency, cooperation size when elasticity joint spindle nose is connected with the connection earring can be guaranteed moreover, just can effectively guarantee the flexibility of snake bone connection back bent angle, can not appear frictional force because of the size clearance undersize and lead to the bent angle dumb greatly or the clearance is too big to cause serious defects such as head partially behind the bent angle.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
FIG. 2 is a schematic structural view of the front knuckle of FIG. 1;
FIG. 3 is a schematic right-side view of FIG. 2;
FIG. 4 is an enlarged schematic view of section A of FIG. 1;
FIG. 5 is a schematic view of the construction of the middle pitch ring of FIG. 1;
FIG. 6 is a schematic cross-sectional view B-B of FIG. 5;
FIG. 7 is a schematic right side view of FIG. 5;
FIG. 8 is a schematic view of the construction of the back knuckle in FIG. 1;
FIG. 9 is a schematic left side view of FIG. 8;
FIG. 10 is a schematic structural view of a second embodiment of the present invention;
FIG. 11 is a schematic structural view of the front pitch ring of FIG. 10;
FIG. 12 is an enlarged schematic view of section C of FIG. 10;
fig. 13 is a schematic structural view of the middle ring in fig. 11.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples, but is not limited thereto.
Example 1
As shown in fig. 1, 2, 3, 4, 5, 6, 7, 8, 9, a four-way bending snake bone of an endoscope comprises an anterior segment 1, a posterior segment 3 and a plurality of middle segments 2 connected between the anterior segment 1 and the posterior segment 3,
one end of the front ring 1 is provided with a rear elastic collar head 11, the rear elastic collar head 11 is provided with a rear elastic groove 111 or a rear elastic through hole 112 which are arranged along the axial direction, the inner wall of the front ring 1 is provided with four first steel wire rope through holes 12 which are uniformly arranged along the circumferential direction,
a first elastic clamping shaft head 21 and a second connecting lug clamping ring 22 are respectively arranged at two ends of each middle section ring 2, the first elastic clamping shaft head 21 is provided with a first elastic groove 211 or a first elastic through hole 212 which are arranged along the axial direction of the first elastic clamping shaft head, the inner wall of each middle section ring 2 is provided with two second steel wire rope through holes 23 which are uniformly arranged along the circumferential direction of the inner wall,
one end of the rear section ring 3 is provided with a front connecting lug clamping ring 31,
the rear elastic clamping shaft head 11 of the front section ring 1 is clamped in the second connecting lug clamping ring 22 of the middle section ring 2 adjacent to the rear section ring 1, the first elastic clamping shaft head 21 of the middle section ring 2 adjacent to the rear section ring 3 is clamped in the front connecting lug clamping ring 31 of the rear section ring 3, the first elastic clamping shaft head 21 of one middle section ring 2 is clamped in the second connecting lug clamping ring 22 of the other middle section ring 2 adjacent to the middle section ring 21, and when the two adjacent middle section rings 2 are assembled, the rear middle section ring needs to rotate 90 degrees to be connected with the front middle section ring.
As shown in fig. 6, in order to facilitate the first elastic collar head of the middle joint ring to be clamped into the first connecting ear collar of the middle joint ring adjacent to the first elastic collar head, the first elastic collar head 21 of the middle joint ring 2 has a cross-shaped first elastic groove 211, and the first elastic groove 211 equally divides the first elastic collar head 21 into four parts.
As shown in fig. 2, in order to conveniently clamp the rear elastic clamping shaft head of the front section ring into the first connecting ear clamping ring of the adjacent middle section ring, the rear elastic clamping shaft head 11 of the front section ring 1 is provided with a cross-shaped rear elastic groove 111, and the rear elastic groove 111 equally divides the rear elastic clamping shaft head 11 into four parts.
As shown in fig. 5 and 6, in order to ensure the processing precision and improve the processing efficiency, and make the utility model discloses the structure is simpler, the one end of well festival circle 2 is equipped with rather than the first engaging lug 24 that each other is integrative, be equipped with rather than the first elasticity collar head 21 that each other is integrative on the first engaging lug 24.
As shown in fig. 2, in order to improve the production efficiency and further improve the structure of the present invention, one end of the front joint ring 1 is provided with rear engaging lugs 13 integrated with each other, and the rear engaging lugs 13 are provided with rear elastic clamping shaft heads 11 integrated with each other.
As shown in fig. 3 and 7, in order to facilitate processing of a steel wire rope through hole and subsequent threading of a steel wire rope, an arc-shaped front wire retaining plate 14 integrated with the front wire retaining plate is arranged on the inner side wall of the front ring 1, and a cavity enclosed between the arc-shaped front wire retaining plate 14 and the side wall of the front ring 1 forms an axial first steel wire rope through hole 12; the inner side wall of the middle section ring 2 is provided with an arc middle wire baffle plate 25 which is integrated with the middle section ring 2, and a cavity enclosed by the arc middle wire baffle plate 25 and the side wall of the middle section ring 2 forms an axial second steel wire rope through hole 23. Two cutting grooves are cut on the side walls of the front section ring 1 and the middle section ring 2 in advance in a linear cutting mode, and then the arc-shaped front thread retaining plate 14 of the front section ring 1 and the arc-shaped middle thread retaining plate 25 of the middle section ring 2 are both formed by punching from the outer wall inwards through arc-shaped punching heads.
Example 2
As shown in fig. 10, 11, 12, and 13, embodiment 2 differs from embodiment 1 in that: the utility model provides a four directions crooked snake bone of endoscope, the one end of preceding festival circle 1 is equipped with back elasticity collar head 11, back elasticity collar head 11 has back elasticity through-hole 112, and the both ends of every well festival circle 2 are equipped with first elasticity collar head 21 and second engaging lug snap ring 22 respectively, first elasticity collar head 21 has first elasticity through-hole 212.
As shown in fig. 12 and 13, the first elastic collar head 21 of the middle joint ring 2 has a first elastic through hole 212 in a cross shape, and the first elastic through hole 212 equally divides the first elastic collar head 21 into four parts.
As shown in fig. 11, the rear elastic collar head 11 of the front knuckle ring 1 has a cross-shaped rear elastic through hole 112, and the rear elastic through hole 112 equally divides the rear elastic collar head 11 into four parts.
The other structure of embodiment 2 is the same as embodiment 1.
The utility model discloses an elastic groove that is equipped with on the elasticity joint spindle nose or the elasticity through-hole all is in order to make the elasticity joint spindle nose have certain contractibility, and the convenience is gone into the connection ear snap ring that corresponds with elasticity joint spindle nose card.
The utility model discloses a structure has cancelled the rivet, has cancelled little steel ring, has reached the welding material that little steel ring and snake bone pitch circle are connected, under the prerequisite of having guaranteed snake bone use quality, has improved production efficiency to and reduced manufacturing cost. The structure that each part is connected by the rivet in the prior art is replaced, and the defect of the rivet type snake bone connecting structure is overcome.
The utility model discloses a cooperation size when elasticity joint spindle nose is connected with the engaging lug snap ring, elasticity groove or elasticity through-hole on its elasticity dop, the size is easy control (can control and be being less than or equal to 0.02 mm), the assurance of its size, the effect of bent angle is very nimble after just effectively guaranteeing the snake bone connection. The defects that the friction force is large, the bend angle is inflexible due to the small size gap, or the serious head deviation after the bend angle is caused by the overlarge gap are avoided.
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 (6)
1. The utility model provides a four-direction bending snake bone of endoscope, includes anterior segment circle (1), back segment circle (3) and connects in a plurality of middle segment circle (2) between anterior segment circle (1) and back segment circle (3), its characterized in that:
one end of the front section ring (1) is provided with a rear elastic clamping shaft head (11), the rear elastic clamping shaft head (11) is provided with a rear elastic groove (111) or a rear elastic through hole (112) which are axially arranged, the inner wall of the front section ring (1) is provided with four first steel wire rope through holes (12) which are uniformly arranged along the circumferential direction,
a first elastic clamping shaft head (21) and a second connecting lug clamping ring (22) are respectively arranged at two ends of each middle section ring (2), the first elastic clamping shaft head (21) is provided with a first elastic groove (211) or a first elastic through hole (212) which is axially arranged along the first elastic clamping shaft head, the inner wall of each middle section ring (2) is provided with two second steel wire rope through holes (23) which are uniformly arranged along the circumferential direction of the inner wall,
one end of the rear section ring (3) is provided with a front connecting lug clamping ring (31),
the rear elastic clamping shaft head (11) of the front section ring (1) is clamped in a second connecting lug clamping ring (22) of the middle section ring (2) adjacent to the rear section ring (3), a first elastic clamping shaft head (21) of the middle section ring (2) adjacent to the rear section ring (3) is clamped in a front connecting lug clamping ring (31) of the rear section ring (3), and a first elastic clamping shaft head (21) of one middle section ring (2) is clamped in a second connecting lug clamping ring (22) of the other middle section ring (2) adjacent to the middle section ring.
2. The endoscope four-way curved snake bone according to claim 1, wherein: the first elastic chuck head (21) of the middle joint ring (2) is provided with a cross-shaped first elastic groove (211) or a cross-shaped first elastic through hole (212), and the first elastic groove (211) or the first elastic through hole (212) equally divides the first elastic chuck head (21) into four parts.
3. The endoscope four-way curved snake bone according to claim 1, wherein: the rear elastic clamping shaft head (11) of the front knuckle ring (1) is provided with a cross-shaped rear elastic groove (111) or a cross-shaped rear elastic through hole (112), and the rear elastic clamping shaft head (11) is equally divided into four parts by the rear elastic groove (111) or the rear elastic through hole (112).
4. The endoscope four-way curved snake bone according to claim 1, wherein: one end of the middle section ring (2) is provided with a first connecting lug (24) which is integrated with the middle section ring, and the first connecting lug (24) is provided with a first elastic clamping shaft head (21) which is integrated with the first connecting lug.
5. The endoscope four-way curved snake bone according to claim 1, wherein: one end of the front section ring (1) is provided with a rear connecting lug (13) which is integrated with the front section ring, and the rear connecting lug (13) is provided with a rear elastic clamping shaft head (11) which is integrated with the rear connecting lug.
6. The endoscope four-way curved snake bone according to claim 1, wherein: an arc front wire retaining plate (14) integrated with the front section ring (1) is arranged on the inner side wall of the front section ring (1), and a cavity enclosed by the arc front wire retaining plate (14) and the side wall of the front section ring (1) forms an axial first steel wire rope through hole (12); the inner side wall of the middle section ring (2) is provided with an arc middle wire baffle plate (25) which is integrated with the middle section ring, and a cavity enclosed by the arc middle wire baffle plate (25) and the side wall of the middle section ring (2) forms an axial second steel wire rope through hole (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922455337.2U CN211460121U (en) | 2019-12-30 | 2019-12-30 | Four-direction bending snake bone of endoscope |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922455337.2U CN211460121U (en) | 2019-12-30 | 2019-12-30 | Four-direction bending snake bone of endoscope |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211460121U true CN211460121U (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922455337.2U Active CN211460121U (en) | 2019-12-30 | 2019-12-30 | Four-direction bending snake bone of endoscope |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211460121U (en) |
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2019
- 2019-12-30 CN CN201922455337.2U patent/CN211460121U/en active Active
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