A non-return structure

Abstract

The present invention discloses a non-return structure, which includes: a shell, a mounting hole is provided on the shell; a pull rope mounting seat, the pull rope mounting seat is arranged in the shell, the top end of the pull rope mounting seat passes through the mounting hole, and can rotate in the mounting hole; a first toggle member, the first toggle member is arranged above the mounting hole; a second toggle member, the second toggle member extends into the first toggle member and is fixedly connected to the pull rope mounting seat; and a spring-top assembly, the spring-top assembly is arranged on the shell; when the first toggle member is rotated, the top end of the spring-top assembly can extend into the first toggle member, or come out from the first toggle member, and push against the first toggle member. The above design allows the present invention to effectively play a non-return role, and its structure is extremely simple and ingenious, which is easy to promote and use.

Description

Technical Field

[0001] The invention relates to the field of machinery, and in particular to a non-return structure. Background Art

[0002] An endoscope is a commonly used medical device that can be used to observe the condition of a certain part of the human body. When the end of the endoscope is inserted into the human body, it is sometimes necessary to control the head end to bend in a certain direction through the control part outside the human body. After the head end is bent, it needs to be kept in this state. At this time, a check structure is needed to maintain this state.

[0003] Therefore, it is now urgent to design a non-return structure that can solve one or more of the above problems. Summary of the invention

[0004] In order to solve one or more problems existing in the prior art, the present invention provides a non-return structure.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned purpose is: a non-return structure, the non-return structure comprising:

[0006] A housing, wherein a mounting hole is provided on the housing;

[0007] A pull rope mounting seat, the pull rope mounting seat is arranged in the housing, the top end of the pull rope mounting seat passes through the mounting hole, and can rotate in the mounting hole;

[0008] A first toggle member, wherein the first toggle member is arranged above the mounting hole;

[0009] A second toggle member, the second toggle member extends into the first toggle member and is fixedly connected to the pull rope mounting seat; and

[0010] A pop-up top assembly, the pop-up top assembly being arranged on the housing;

[0011] When the first toggle member is rotated, the top end of the ejector assembly can extend into the first toggle member, or come out from the first toggle member and push against the first toggle member.

[0012] In some embodiments, the non-return structure also includes a limiting device, which includes a limiting groove and a limiting pin. The limiting groove is arranged on the bottom surface of the first toggle member, and the limiting pin is arranged on the top surface of the shell. The limiting pin moves in the limiting groove.

[0013] In some embodiments, a ball-bumping groove is further provided on the shell, and the ball-bumping groove is arranged around the mounting hole, and the ejector assembly is arranged in the ball-bumping groove.

[0014] In some embodiments, a through hole is provided at the center of the first toggle member, a first handle and a toggle bar hole are provided on the side wall of the first toggle member, the toggle bar hole is arc-shaped, and the second toggle member is inserted into the first toggle member through the toggle bar hole.

[0015] In some embodiments, a clearance hole is provided at the bottom of the first toggle member, the clearance hole is arranged around the through hole, and the top end of the ejector assembly can be inserted into the clearance hole.

[0016] In some embodiments, a limiting hole is further provided at the bottom of the first shifting member, and the limiting hole is arranged between the two avoiding holes.

[0017] In some embodiments, the second toggle member includes a connecting plate and a second handle, the second handle is connected to a side wall of the connecting plate, and the connecting plate extends into the first toggle member.

[0018] In some embodiments, the pop-up top component is a bead.

[0019] In some embodiments, the non-return structure further includes a top cover, which is disposed above the first toggle member and is clamped and fixed to the second toggle member.

[0020] The beneficial effects of the present invention are as follows: compared with the prior art, the present invention includes: a housing, the housing is provided with a mounting hole; a drawstring mounting seat, the drawstring mounting seat is arranged in the housing, the top end of the drawstring mounting seat passes through the mounting hole, and can rotate in the mounting hole; a first toggle member, the first toggle member is arranged above the mounting hole; a second toggle member, the second toggle member extends into the first toggle member and is fixedly connected to the drawstring mounting seat; and a pop-up assembly, the pop-up assembly is arranged on the housing; when the first toggle member is rotated, the top end of the pop-up assembly can extend into the first toggle member, or come out of the first toggle member, and push against the first toggle member. The above design allows the present invention to effectively play a non-return role, and its structure is extremely simple and ingenious, which is convenient for popularization and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a preferred embodiment of the present invention;

[0022] Figure 2 An exploded view of a preferred embodiment of the present invention;

[0023] Figure 3 This is a schematic structural diagram of a housing of a preferred embodiment of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a first toggle member in a preferred embodiment of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the first toggle member from another perspective of a preferred embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the structure of the second shifting member in a preferred embodiment of the present invention.

[0027] In the figure:

[0028] 1-housing; 11-ball groove;

[0029] 2-first toggle member; 21-toggle bar hole; 22-first handle; 23-avoidance hole; 24-limiting hole;

[0030] 3-second toggle member; 31-connecting plate; 32-second handle;

[0031] 4- Top cover;

[0032] 5-pull rope mounting seat;

[0033] 6- bullet top assembly;

[0034] 7-Limiting pin;

[0035] 8-Limiting slot. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more understandable, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0037] like Figure 1-Figure 6 As shown, the present invention provides a non-return structure, the non-return structure comprising:

[0038] A housing 1, wherein the housing 1 is provided with a mounting hole;

[0039] A pull rope mounting seat 5, wherein the pull rope mounting seat 5 is arranged in the housing 1, and a top end thereof passes through the mounting hole and can rotate in the mounting hole;

[0040] A first toggle member 2, wherein the first toggle member 2 is arranged above the mounting hole;

[0041] A second toggle member 3, which extends into the first toggle member 2 and is fixedly connected to the pull rope mounting seat 5; and

[0042] A pop-up top assembly 6, wherein the pop-up top assembly 6 is arranged on the housing 1;

[0043] When the first toggle member 2 is rotated, the top end of the ejector assembly 6 can extend into the first toggle member 2 , or come out from the first toggle member 2 and push against the first toggle member 2 .

[0044] Specifically, the pull rope mounting seat 5 includes a turntable and a connecting column. The turntable is inside the housing 1. A limit block is arranged inside the housing 1. The limit block limits the turntable so that it cannot move upward. The pull rope is connected to the turntable. The other end of the pull rope is connected to the head end of the endoscope. The connecting column passes through the mounting hole. When the pull rope mounting seat 5 is rotated, the head end of the endoscope can be bent in the corresponding direction. The first toggle member 2 is located on the top surface of the housing 1, and the top end of the connecting column is inserted into the through hole at the center position of the first toggle member 2. The connecting plate 31 of the second toggle member 3 passes through the toggle bar hole 21 of the first toggle member 2 and enters the first toggle member 2. The connecting plate 31 is provided with a bolt hole, and the connecting plate 31 is fixedly connected to the top end of the connecting column by bolts, so that the pull rope mounting seat 5 cannot move downward. In this embodiment, the elastic top assembly 6 adopts a bumping ball, and the lower end of the bumping ball is in the bumping ball groove 11.

[0045] To bend the end of the endoscope head, the first toggle member 2 needs to be loosened. At this time, the spherical part of the top of the ball extends into the avoidance hole 23 on the bottom surface of the first toggle member 2. To keep the head end in a bent state and prevent the turntable from rotating, the first toggle member 2 can be rotated to make the top of the ball come out of the avoidance hole 23 and press against the bottom surface of the first toggle member 2. At this time, the ball exerts an upward force on the first toggle member 2. In this way, the first toggle member 2 also exerts an upward force on the second toggle member 3. Since the second toggle member 3 is fixedly connected to the rope mounting seat 5, the turntable of the rope mounting seat 5 is in close contact with the limit block in the housing 1, and the resistance is increased, thereby keeping the rope mounting seat 5 in a stationary state.

[0046] In some embodiments, the non-return structure also includes a limiting device, which includes a limiting groove 8 and a limiting pin 7. The limiting groove 8 is arranged on the bottom surface of the first toggle member 2, and the limiting pin 7 is arranged on the top surface of the outer shell 1. The limiting pin 7 moves in the limiting groove 8.

[0047] Specifically, the limiting groove 8 is arc-shaped and is arranged concentrically with the through hole of the first toggle member 2. The top end of the limiting pin 7 extends into the limiting groove 8 and can only move back and forth in the limiting groove 8, so that the rotation angle of the first toggle member 2 can be limited.

[0048] In some embodiments, a ball-bumping groove 11 is further provided on the housing 1 . The ball-bumping groove 11 is arranged around the mounting hole, and the ejector assembly 6 is arranged in the ball-bumping groove 11 .

[0049] Specifically, the circle formed by the ball contact grooves 11 is coaxial with the mounting hole, wherein the limit pin 7 is located on the circle formed by the ball contact grooves 11 .

[0050] In some embodiments, a through hole is provided at the center of the first toggle member 2, a first handle 22 and a toggle bar hole 21 are provided on the side wall of the first toggle member 2, the toggle bar hole 21 is arc-shaped, and the second toggle member 3 is inserted into the first toggle member 2 through the toggle bar hole 21.

[0051] Specifically, the longitudinal section of the first toggle member 2 is concave in shape, and a through hole is arranged at the center position of the bottom plate of the first toggle member 2. A first handle 22 is arranged on the outer wall of the first toggle member 2 to facilitate toggling the first toggle member 2. At the same time, an arc-shaped toggle bar hole 21 is arranged on the side wall of the first toggle member 2. The second handle 32 of the second toggle member 3 can move back and forth on the toggle bar hole 21. The bottom surface of the connecting plate 31 of the second toggle member 3 contacts the inner bottom surface of the first toggle member 2. When the bead exerts an upward force on the first toggle member 2, the first toggle member 2 will generate an upward force on the connecting plate 31.

[0052] In some embodiments, a clearance hole 23 is provided at the bottom of the first toggle member 2 , and the clearance hole 23 is arranged around the through hole, and the top end of the ejector assembly 6 can be inserted into the clearance hole 23 .

[0053] Specifically, the number and positions of the air-avoiding holes 23 match the ball-contacting grooves 11 , and the diameter of the air-avoiding holes 23 is greater than or equal to the diameter of the spherical portion at the top of the ejector assembly 6 .

[0054] In some embodiments, a limiting hole 24 is further provided at the bottom of the first shifting member 2 , and the limiting hole 24 is disposed between the two avoiding holes 23 .

[0055] Specifically, the limiting hole 24 is located on the circle formed by the avoiding holes 23, and the diameter of the limiting hole 24 is smaller than the diameter of the spherical part at the top of the spring-top assembly 6. When the first toggle member 2 is rotated, one of the bumping beads comes out of the avoiding hole 23, and the top end hits the limiting hole 24, which can limit the first toggle member 2.

[0056] In some embodiments, the second toggle member 3 includes a connecting plate 31 and a second handle 32 , the second handle 32 is connected to a side wall of the connecting plate 31 , and the connecting plate 31 extends into the first toggle member 2 .

[0057] Specifically, the connecting plate 31 is cylindrical, and its diameter is larger than the diameter of the through hole at the center of the first toggle member 2 , and smaller than or equal to the inner diameter of the first toggle member 2 .

[0058] In some embodiments, the pop-up top assembly 6 is a bead.

[0059] Specifically, the top of the ejector assembly 6 is spherical. The ejector assembly 6 of this embodiment is preferably a bumper, the top of the bumper is a sphere, and a spring is arranged inside the bumper. When the bumper comes out of the air-avoiding hole 23, the spring will be compressed downward, and at the same time, the spring will exert an upward elastic force on the sphere, so that the sphere pushes the bottom surface of the first toggle member 2 upward; when the bumper enters the air-avoiding hole 23, the spring is in an extended state. In this embodiment, at least three bumpers are preferably provided.

[0060] In some embodiments, the non-return structure further includes a top cover 4 , which is disposed above the first toggle member 2 , and the top cover 4 is clamped and fixed to the second toggle member 3 .

[0061] Specifically, a snap-in hole is provided on the top surface of the second toggle member 3, that is, the top surface of the connecting plate 31, and a matching snap-in column is provided at the bottom end of the top cover 4. The snap-in hole and the snap-in column are interference fit, so that the top cover 4 and the second toggle member 3 are snap-fitted and fixed, which is convenient for disassembly and assembly.

[0062] In summary, the present invention includes a housing 1, which is provided with a mounting hole; a pull rope mounting seat 5, which is arranged in the housing 1, and its top end passes through the mounting hole and can rotate in the mounting hole; a first toggle member 2, which is arranged above the mounting hole; a second toggle member 3, which extends into the first toggle member 2 and is fixedly connected to the pull rope mounting seat 5; and an elastic top assembly 6, which is arranged on the housing 1; when the first toggle member 2 is rotated, the top end of the elastic top assembly 6 can extend into the first toggle member 2, or come out from the first toggle member 2, and push against the first toggle member 2. The above design allows the present invention to effectively play a non-return role, and its structure is extremely simple and ingenious, which is easy to promote and use.

[0063] The above-mentioned embodiments only express one or more implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A non-return structure, characterized in that: The non-return structure comprises: A housing, wherein a mounting hole is provided on the housing; A pull rope mounting seat, the pull rope mounting seat is arranged in the housing, the top end of the pull rope mounting seat passes through the mounting hole, and can rotate in the mounting hole; A first toggle member, wherein the first toggle member is arranged above the mounting hole; A second toggle member, the second toggle member extends into the first toggle member and is fixedly connected to the pull rope mounting seat; and A pop-up top assembly, the pop-up top assembly is arranged on the housing; the pop-up top assembly is a bumper; When the first toggle member is rotated, the top end of the ejector assembly can extend into the first toggle member, or come out from the first toggle member and push against the first toggle member; A through hole is provided at the center of the first toggle member; a clearance hole is provided at the bottom of the first toggle member, the clearance hole is arranged around the through hole, and the top end of the ejector assembly can be inserted into the clearance hole; Wherein, the principle of the non-return structure is: When the head end of the endoscope needs to be bent, the first toggle member needs to be loosened, and the spherical part of the top of the ball extends into the avoidance hole on the bottom surface of the first toggle member; when the bent state of the head end needs to be maintained and the turntable is prevented from rotating, the first toggle member is rotated to make the top of the ball come out of the avoidance hole and press against the bottom surface of the first toggle member. At this time, the ball exerts an upward force on the first toggle member, so that the first toggle member also exerts an upward force on the second toggle member, thereby making the turntable of the pull rope mounting seat in close contact with the limit block in the outer shell, increasing the resistance and keeping the pull rope mounting seat in a stationary state.

2. The non-return structure according to claim 1, characterized in that: The non-return structure also includes a limiting device, which includes a limiting groove and a limiting pin. The limiting groove is arranged on the bottom surface of the first toggle member, and the limiting pin is arranged on the top surface of the shell. The limiting pin moves in the limiting groove.

3. The non-return structure according to claim 1, characterized in that: The shell is also provided with a ball-bumping groove, which is arranged along the periphery of the mounting hole, and the ejector assembly is arranged in the ball-bumping groove.

4. The non-return structure according to claim 1, characterized in that: A first handle and a toggle bar hole are provided on the side wall of the first toggle member. The toggle bar hole is in an arc shape. The second toggle member is inserted into the first toggle member through the toggle bar hole.

5. The non-return structure according to claim 1, characterized in that: A limiting hole is also provided at the bottom of the first shifting member, and the limiting hole is arranged between the two avoiding holes.

6. The non-return structure according to claim 1, characterized in that: The second toggle member includes a connecting plate and a second handle, wherein the second handle is connected to a side wall of the connecting plate, and the connecting plate extends into the first toggle member.

7. The non-return structure according to claim 1, characterized in that: The non-return structure further includes a top cover, which is disposed above the first toggle member and is fixedly engaged with the second toggle member.

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