CN211460124U

CN211460124U - Rivet-free snake bone middle joint ring of endoscope

Info

Publication number: CN211460124U
Application number: CN201922455340.4U
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: 2019-12-30
Filing date: 2019-12-30
Publication date: 2020-09-11
Anticipated expiration: 2029-12-30

Abstract

The utility model relates to a no rivet snake bone well pitch circle of endoscope, including the annular body, its innovation point lies in: the two ends of the annular body are respectively provided with an elastic clamping shaft head and a connecting lug clamping ring, the elastic clamping shaft head is provided with an elastic groove or an elastic through hole which are arranged along the axial direction of the elastic clamping shaft head, and the inner wall of the annular body is provided with two steel wire rope perforations which are uniformly arranged along the circumferential direction of the inner wall of the annular body. The utility model discloses need not rivet, be convenient for join in marriage the dress, and production efficiency is high to and manufacturing cost has been reduced.

Description

Rivet-free snake bone middle joint ring of endoscope

Technical Field

The utility model relates to a snake bone device, in particular to a rivet-free snake bone middle joint ring of a medical flexible endoscope, which belongs to the technical field of medical appliances.

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 rivet-free snake bone middle joint ring of the endoscope is free of riveting, convenient to assemble, 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 no rivet snake bone internode circle of endoscope, includes annular body, and its innovation point lies in:

the two ends of the annular body are respectively provided with an elastic clamping shaft head and a connecting lug clamping ring, the elastic clamping shaft head is provided with an elastic groove or an elastic through hole which are arranged along the axial direction of the elastic clamping shaft head, and the inner wall of the annular body is provided with two steel wire rope perforations which are uniformly arranged along the circumferential direction of the inner wall of the annular body.

In the above technical solution, the elastic chuck head of the annular body has a cross-shaped elastic groove or a cross-shaped elastic through hole, and the elastic groove or the elastic through hole equally divides the elastic chuck head into four parts.

In the above technical solution, the elastic chuck spindle head of the annular body has a linear elastic groove or a linear elastic through hole, and the elastic groove or the elastic through hole equally divides the elastic chuck spindle head into two parts.

In the technical scheme, one end of the annular body is provided with a connecting lug which is integrated with the annular body, and the connecting lug is provided with an elastic clamping shaft head which is integrated with the connecting lug.

In the above technical solution, the engaging lug is of a flat plate structure, and the engaging lug snap ring are respectively in two mutually parallel axial planes.

In the technical scheme, the inner side wall of the annular body is provided with the arc-shaped line blocking plates which are integrated with the annular body, and the cavity enclosed by the arc-shaped line blocking plates and the side wall of the annular body forms an axial steel wire rope through hole.

The utility model discloses the positive effect who has is: after the rivet-free snake bone middle joint ring of the endoscope is adopted, the two ends of the annular body are respectively provided with the elastic clamping shaft head and the connecting lug clamping ring, and the elastic clamping shaft head is provided with the elastic groove or the elastic through hole which is arranged along the axial direction of the elastic clamping shaft head; in the assembling process, the elastic clamping shaft head of the front section ring is clamped into the connecting ear clamping ring at one end of the middle section ring adjacent to the front section ring, the elastic clamping shaft head of the middle section ring adjacent to the rear section ring is directly clamped into the connecting ear clamping ring of the rear section ring, the elastic clamping shaft head of one middle section ring is clamped into the connecting ear clamping ring of the other middle section ring adjacent to the middle section ring, and riveting connection through rivets is not needed, so that the assembling is convenient, the situation that the riveting quality is unqualified cannot occur, the phenomenon that the rivets fall off cannot occur, the production efficiency is high, the assembling quality of final products is good, and the production cost is lower; and because the inner wall of the annular body is provided with two steel wire rope through holes which are uniformly distributed along the circumferential direction, the annular body is convenient to assemble with the steel wire ropes. Therefore, the utility model discloses a cooperation size when well festival circle is connected with preceding festival circle and back festival circle can obtain guaranteeing, just can effectively guarantee the flexibility of flexible of back bent angle of snake bone connection, can not lead to bent angle inflexibility or the clearance too big defect such as serious lopsided behind the bent angle that leads to of frictional force greatly because of the size clearance undersize.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic sectional view A-A of FIG. 1;

FIG. 3 is a schematic right-side view of FIG. 2;

FIG. 4 is a schematic structural diagram of a second embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view B-B of FIG. 4;

FIG. 6 is a schematic structural diagram of a third embodiment of the present invention;

fig. 7 is a schematic structural diagram of a fourth embodiment of the present invention.

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 and 6, the rivet-free snake bone middle joint ring of the endoscope comprises an annular body 1,

the both ends of annular body 1 are equipped with elasticity joint spindle nose 11 and engaging lug snap ring 12 respectively, elasticity joint spindle nose 11 has the elastic groove 111 of arranging along its axial, the inner wall of annular body 1 is equipped with two wire rope perforation 13 of evenly arranging along its circumferencial direction.

As shown in fig. 1, in order to make the elastic collar head have a certain elastic contractibility, the elastic collar head is conveniently clamped into the connecting ear snap ring in the process of assembling the elastic collar head with other components of the snake bone, the elastic collar head 11 of the annular body 1 is provided with a cross-shaped elastic groove 111, and the elastic groove 111 equally divides the elastic collar head 11 into four parts.

Of course, it is not limited thereto, and other structures may be adopted, for example, as shown in fig. 6, the elastic collar head 11 of the annular body 1 has a straight-line-shaped elastic groove 111, and the elastic groove 111 equally divides the elastic collar head 11 into two parts.

As shown in fig. 1, in order to improve the production efficiency of the parts and make the structure more reasonable, one end of the annular body 1 is provided with a connecting lug 14 integrated with the annular body, and the connecting lug 14 is provided with an elastic chuck head 21 integrated with the annular body.

As shown in fig. 1, in order to further improve the rationality of the present invention, the engaging lug 14 is of a flat plate structure, and the engaging lug 14 and the engaging lug snap ring 12 are respectively located in two axial planes parallel to each other.

As shown in fig. 3, in order to facilitate the penetration of the steel wire rope, the inner side wall of the annular body 1 is provided with arc-shaped line baffles 15 integrated with the inner side wall of the annular body 1, and a cavity enclosed between the arc-shaped line baffles 15 and the side wall of the annular body 1 forms an axial steel wire rope through hole 13. Two cutting grooves are cut on the side wall of the annular body of the middle ring in advance in a linear cutting mode, and then the arc middle wire retaining plates 15 of the middle ring are formed by inwards punching from the outer wall through arc punching heads.

Example 2

As shown in fig. 4, 5, and 7, embodiment 2 differs from embodiment 1 in that: a rivet-free middle segment ring of a snake bone of an endoscope, an elastic chuck head 11 at one end of an annular body 1 is provided with an elastic through hole 112 arranged along the axial direction thereof.

As shown in fig. 4 and 5, the elastic collar head 11 of the ring body 1 has a cross-shaped elastic through hole 112, and the elastic through hole 112 equally divides the elastic collar head 11 into four parts.

Of course, it is not limited thereto, and other structures may be adopted, for example, as shown in fig. 6, the elastic collar head 11 of the annular body 1 has a straight-shaped elastic through hole 112, and the elastic groove 111 or the elastic through hole 112 equally divides the elastic collar head 11 into two 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, conveniently go into the connection ear snap ring of other parts of snake bone device with elasticity joint spindle nose card.

The utility model discloses in the assembling process, the elasticity joint spindle nose card of preceding festival circle go into with and the connection ear snap ring of adjacent well festival circle one end, the connection ear snap ring of back festival circle is directly gone into to the elasticity joint spindle nose card of the adjacent well festival circle of back festival circle, the elasticity joint spindle nose card of a well festival circle goes into in the connection ear snap ring of another well festival circle rather than adjacent, need not to connect through the rivet riveting, therefore, be convenient for join in marriage the dress, and the unqualified condition of riveting quality can not appear, the phenomenon that the rivet drops can not appear yet, make production efficiency high, the assembly quality of final product is good, the while production cost is also lower. Therefore, the utility model discloses a cooperation size when well festival circle is connected with preceding festival circle and back festival circle can obtain guaranteeing, just can effectively guarantee the flexibility of flexible of back bent angle of snake bone connection, can not lead to bent angle inflexibility or the clearance too big defect such as serious lopsided behind the bent angle that leads to of frictional force greatly because of the size clearance undersize.

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

1. The utility model provides a no rivet snake bone middle pitch circle of endoscope, includes annular body (1), its characterized in that:

the two ends of the annular body (1) are respectively provided with an elastic clamping shaft head (11) and a connecting lug clamping ring (12), the elastic clamping shaft head (11) is provided with an elastic groove (111) or an elastic through hole (112) which are arranged along the axial direction of the elastic clamping shaft head, and the inner wall of the annular body (1) is provided with two steel wire rope perforation holes (13) which are uniformly arranged along the circumferential direction of the inner wall.

2. The rivetless snake bone medium pitch loop of an endoscope of claim 1, wherein: the elastic chuck head (11) of the annular body (1) is provided with a cross-shaped elastic groove (111) or a cross-shaped elastic through hole (112), and the elastic groove (111) or the elastic through hole (112) equally divides the elastic chuck head (11) into four parts.

3. The rivetless snake bone medium pitch loop of an endoscope of claim 1, wherein: the elastic chuck head (11) of the annular body (1) is provided with a linear elastic groove (111) or a linear elastic through hole (112), and the elastic groove (111) or the elastic through hole (112) equally divides the elastic chuck head (11) into two parts.

4. The rivetless snake bone medium pitch loop of an endoscope of claim 1, wherein: one end of the annular body (1) is provided with connecting lugs (14) which are integrated with the annular body, and the connecting lugs (14) are provided with elastic clamping shaft heads (11) which are integrated with the connecting lugs.

5. The rivet-free snake bone medium pitch loop of an endoscope according to claim 4, wherein: the connecting lug (14) is of a flat plate type structure, and the connecting lug (14) and the connecting lug clamping ring (12) are respectively arranged in two mutually parallel axial planes.

6. The rivetless snake bone medium pitch loop of an endoscope of claim 1, wherein: arc-shaped wire blocking plates (15) which are integrated with the annular body (1) are arranged on the inner side wall of the annular body (1), and a cavity enclosed between the arc-shaped wire blocking plates (15) and the side wall of the annular body (1) forms an axial steel wire rope through hole (13).