Hook head damping adjusting structure for endoscope

Abstract

The utility model relates to the technical field of endoscopes, in particular to a hook head damping adjusting structure for an endoscope. Comprising a hook head, a steering structure is arranged in the hook head, the lower end of the steering structure is connected with a handle, and damping is generated by contact between the hook head and a damping seat arranged in the handle; a spring is arranged between the damping seat and the handle, an extending cylinder is arranged on the outer wall of the damping seat, a plurality of lifting shafts are arranged on the outer edge face of the extending cylinder, and a rotatable wedge-shaped piece is arranged at the position, located at the upper ends of the lifting shafts, of the handle. When damping is adjusted, the handle is held by one hand, and the thumb of the hand can stir the damping adjusting ring to rotate. And the damping adjusting ring rotates, so that the lifting shaft is transferred from the fluctuating end of the wedge-shaped surface of the wedge-shaped sheet to the horizontal end of the bulge to descend. The lifting shaft drives the extension cylinder to descend, and the extension cylinder drives the damping seat to descend, so that the extrusion force between the damping seat and the pressing piece is adjusted, the static friction force is changed, and the purpose of changing damping is achieved. According to the scheme, operation can be achieved with one hand, and use is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to endoscope technical field especially relates to a hook head damping adjustment structure for endoscope. BACKGROUND

[0002] Endoscope is a kind of multi-disciplinary universal tool, its function is to be able to explore the deep place of curved pipe, can observe the part that cannot be directly seen, can observe internal space structure and state in sealed cavity, can realize remote observation and operation.

[0003] The rocker structure of the existing industrial endoscope mostly adopts the friction force generated by the mutual extrusion of the hemispherical surface of the middle part of rocker arm and the upper shell or the part connected with the upper shell;When the rocker drives the rocker arm to rotate to a certain angle, it can stay at a certain position, achieving the effect of damping.

[0004] Some products may not be able to achieve adjustable damping, because damping is achieved by pressure from the upper shell, which may cause structural conflicts, etc., so that it will be very inconvenient when damping is not needed in some use environments.

[0005] Some products have adjustable damping, such as the patent document with the announcement number CN 218995783 U, which discloses a hook head damping adjustment device for endoscope, a lifting assembly is arranged below the hook head damping, an installation column is screwed and threadedly connected with the bottom wall of the handle, the connecting column drives the damping seat to lift, so as to adjust the contact damping size of the hook head. However, the installation column is placed below the handle, and when adjusting, one hand holds the handle and the other hand needs to be screwed. If it is in the operation state, it needs others to help adjust, which is inconvenient.

[0006] Therefore, the utility model provides a hook head damping adjustment structure for endoscope, which makes the hook adjustment more convenient. UTILITY MODEL CONTENTS

[0007] The utility model aims at solving the problems in the prior art and provides a hook head damping adjustment structure for endoscope.

[0008] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0009] A hook head damping adjustment structure for endoscope, comprising a hook head, a steering structure is arranged in the hook head, a handle is connected to the lower end of the steering structure, damping is generated by the contact between the hook head and the damping seat arranged in the handle;A spring is arranged between the damping seat and the handle, an extension cylinder is arranged on the outer wall of the damping seat, a plurality of lifting shafts are arranged on the outer edge surface of the extension cylinder, and a wedge-shaped piece that can rotate is arranged on the upper end of the lifting shaft on the handle.

[0010] Preferably, the upper end of the handle is provided with an arc-shaped slot corresponding to the lifting shaft, and a connecting rod is inserted into the arc-shaped slot at intervals, and the upper ends of all the connecting rods extend out of the arc-shaped slot and are jointly connected with a damping adjustment ring rotatably installed on the handle, and the lower end of each connecting rod is detachably connected with the corresponding wedge-shaped piece.

[0011] Preferably, a plurality of connecting rods are arranged between each wedge-shaped piece and the damping adjustment ring.

[0012] Preferably, the steering structure comprises a radial bearing and a support shaft arranged in the radial bearing, and the damping seat and the spring are sleeved on the support shaft, and a fixing seat is threadedly installed at the lower end of the support shaft, and a support frame coaxial with the support shaft is tightly installed in the handle, and the fixing seat is embedded in the support frame.

[0013] Preferably, the lower end of the fixing seat penetrates through the support frame and is threadedly installed with a connecting column, the connecting column is a stepped shaft with a gradually decreasing diameter from top to bottom, and the lower end of the handle is provided with a through hole abutting against the variable-diameter end of the connecting column.

[0014] Preferably, a locking member abutting against the side wall of the lower end of the handle is sleeved on the connecting column, and a locking nut abutting against the lower end of the locking member is threadedly installed at the lower end of the connecting column.

[0015] Preferably, a D-shaped counterbore is arranged at the center of the support frame, and the fixing seat is embedded in the counterbore and the embedded part is D-shaped.

[0016] Preferably, the hook head comprises an upper sphere and a hemispherical pressing piece tightly installed at the lower end of the upper sphere, the upper end of the upper sphere is provided with a handle, the pressing piece is installed on the bearing sleeve of the radial bearing, and the pressing piece is in contact with the damping seat to generate damping.

[0017] Preferably, the upper end of the damping seat is a hemispherical flange matched with the pressing piece, and the lower end of the damping seat is a cylindrical sleeve sleeved on the support shaft.

[0018] Preferably, the extension cylinder is detachably connected with the damping seat.

[0019] Compared with the prior art, the hook damping adjustment structure for endoscopy has the following beneficial effects:

[0020] When adjusting the damping, one hand holds the handle, and the thumb of the hand can drive the damping adjustment ring to rotate. The rotation of the damping adjustment ring makes the lifting shaft shift from the wedge-shaped surface of the wedge-shaped piece to the convex horizontal end and then descend. The lifting shaft drives the extension cylinder to descend, and the extension cylinder drives the damping seat to descend, so as to adjust the extrusion force between the damping seat and the pressing piece, change the static friction force, and thus achieve the purpose of changing the damping. In the present scheme, one hand can operate, and the use is more convenient.

[0021] Other advantages, objectives and features of this invention will be set forth in part in the description which follows; and in part will be apparent to those skilled in the art upon examination of the following description; or may be taught from practice of this invention. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the present invention.

[0023] Figure 2 This is an exploded view of the present invention.

[0024] Figure 3 This is a cross-sectional view of the present invention.

[0025] Figure 4 For the present utility model Figure 3 A partial cross-sectional schematic diagram.

[0026] Figure 5 For the present utility model Figure 4 A cross-sectional view after the handle has been removed.

[0027] Figure 6 For the present utility model Figure 3 A schematic diagram of the cross-section at point AA.

[0028] Figure 7 For the present utility model Figure 1 A 3D diagram after the handle has been removed.

[0029] Figure 8 This is a three-dimensional view of the adjustment structure, damping seat, and hook of this utility model.

[0030] Figure 9 This is an exploded view of the damping seat and support shaft mating structure of this utility model.

[0031] In the diagram: 1. Handle; 2. Locking element; 3. Locking nut; 4. Connecting column; 5. Support frame; 6. Fixed seat; 7. Support shaft; 8. Spring; 9. Extension cylinder; 10. Lifting shaft; 11. Damping seat; 12. Wedge plate; 13. Connecting rod; 14. Damping adjustment ring; 15. Arc groove; 16. Pressure plate; 17. Radial bearing; 18. Upper ball; 19. Crank handle. Detailed Implementation

[0032] The following will refer to the appendix in the embodiments of this utility model. Figures 1-9 The technical solutions in the embodiments of this utility model will be clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0033] In order to solve the problems existing in the prior art, the embodiment provides a hook damping adjusting structure for an endoscope, which comprises a hook, a steering structure is arranged in the hook, a handle 1 is connected to the lower end of the steering structure, and damping is generated by contact between the hook and a damping seat 11 arranged in the handle 1; a spring 8 is arranged between the damping seat 11 and the handle 1, and friction damping is generated by pressure of the spring 8. An extension cylinder 9 is arranged on the outer wall of the damping seat 11, a vertical sliding groove is arranged on the inner wall of the handle 1, the end of the extension cylinder 9 is inserted into the sliding groove, and the extension cylinder 9 is vertically slidably arranged in the handle 1. A plurality of lifting shafts 10 are arranged on the outer edge surface of the extension cylinder 9, and a rotatable wedge-shaped piece 12 is arranged on the upper end of the lifting shaft 10 on the handle 1. The wedge-shaped piece 12 is in the shape of an arc-shaped piece, a wedge-shaped surface is arranged at the lower end of the wedge-shaped piece 12, and the protruding end of the wedge-shaped surface is horizontal.

[0034] The number of the lifting shafts 10 is not less than 2 and the lifting shafts 10 are arranged in an annular array around the extension cylinder 9, so that the force of the lifting shafts 10 pressing the extension cylinder 9 is uniformly distributed around the extension cylinder 9, and the transmission stability and consistency are not affected by the lateral deviation of the extension cylinder 9.

[0035] The handle 1 is divided into an upper shell and a lower shell, and the upper shell and the lower shell are connected through fasteners.

[0036] An arc-shaped groove 15 corresponding to the lifting shaft 10 is arranged on the upper end of the handle 1, a connecting rod 13 is inserted into the arc-shaped groove 15 at intervals, the upper ends of all the connecting rods 13 protrude out of the arc-shaped groove 15 and are jointly connected to a damping adjusting ring 14 rotatably arranged on the handle 1, and the lower end of each connecting rod 13 is detachably connected to the corresponding wedge-shaped piece 12. All the wedge-shaped pieces 12 can be rotated by rotating the damping adjusting ring 14. Through the side size limitation of the arc-shaped groove 15, when the connecting rod 13 is transferred from one end of the arc-shaped groove 15 to the other end by rotating the damping adjusting ring 14, the lifting shaft 10 moves on the wedge-shaped piece 12 along the wedge-shaped surface to the protruding horizontal end, so that the pressing force between the wedge-shaped piece 12 and the lifting shaft 10 is vertically distributed, and the lifting shaft 10 is not pressed against the wedge-shaped surface to cause the wedge-shaped slope to be pressed and deviated, thereby affecting the stability of damping adjustment.

[0037] The hook comprises an upper sphere 18 and a hemispherical pressing piece 16 tightly arranged at the lower end of the upper sphere 18. A handle 19 is arranged at the upper end of the upper sphere 18, the pressing piece 16 is arranged on the bearing sleeve of a radial bearing 17, and the pressing piece 16 is in contact with the damping seat 11 to generate damping. The size of the damping depends on the static friction force between the damping seat 11 and the pressing piece 16, the greater the static friction force, the greater the damping; and the smaller the static friction force, the smaller the damping.

[0038] The upper end of the damping seat 11 is a hemispherical flared portion matched with the pressing piece 16, and the lower end is a cylindrical portion sleeved on the supporting shaft 7. The hemispherical structure occupies one fourth of the size, which neither causes interference in the process of turning the hook, nor can guarantee the constant contact between the damping seat 11 and the pressing piece 16 in the process of hooking, so as to ensure the stable existence of the damping. The damping in the prior art is generally installed on the upper sphere 18 to realize the damping positioning operation in the turning process. In the device, the damping seat 11 is arranged below the upper sphere 18, which mainly verifies the size of the damping when the upper sphere 18 is not closed, and facilitates the debugging.

[0039] The turning structure comprises the radial bearing 17 and the supporting shaft 7 arranged in the radial bearing 17, the damping seat 11 and the spring 8 are sleeved on the supporting shaft 7, the lower end of the supporting shaft 7 is screw-mounted with the fixing seat 6, the handle 1 is tightly mounted with the supporting frame 5 coaxial with the supporting shaft 7, and the fixing seat 6 is embedded in the supporting frame 5. The supporting frame 5 is provided with a D-shaped counterbore at the shaft center, and the fixing seat 6 is embedded in the counterbore and the embedded part is D-shaped. The fixing seat 6 is limited so as to keep stable on the supporting frame 5.

[0040] According to the above technical scheme:

[0041] In the initial state, the top end of the lifting shaft 10 abuts against the starting section of the wedge-shaped surface of the lower end of the wedge-shaped piece 12 (the highest point of the lower end of the wedge-shaped piece 12), the extrusion force between the damping seat 11 and the pressing piece 16 is the largest, and the damping generated by the static friction is the largest.

[0042] When adjusting the damping, one hand holds the handle 1, and the thumb of the hand can drive the damping adjusting ring 14 to rotate. The damping adjusting ring 14 rotates to drive the connecting rod 13 to move from one end to the other end of the arc-shaped groove 15, so that the lifting shaft 10 moves from the starting end of the wedge-shaped surface of the wedge-shaped piece 12 to the raised horizontal end. The lifting shaft 10 drives the extension cylinder 9 to descend, the extension cylinder 9 drives the damping seat 11 to descend, thereby adjusting the extrusion force between the damping seat 11 and the pressing piece 16, changing the size of the static friction, and achieving the purpose of changing the damping. When the damping seat 11 is separated from the pressing piece 16, the damping is zero.

[0043] In the scheme, one hand can operate, and the use is more convenient.

[0044] In the further embodiment of the scheme, a plurality of connecting rods 13 are arranged between each wedge-shaped piece 12 and the damping adjusting ring 14. The number of connecting rods 13 between each wedge-shaped piece 12 and the damping adjusting ring 14 is not less than two, and the connecting rods 13 are distributed in the arc-shaped groove 15 at intervals. The spacing of the outermost connecting rod 13 is smaller than the flared range of the arc-shaped groove 15, so as to leave a movement range of the lifting shaft 10 along the wedge-shaped surface. Through the plurality of connecting rods 13, the stress bearing point of the wedge-shaped piece 12 is increased, so as to prevent the wedge-shaped piece 12 from being deflected by stress.

[0045] The connecting rod 13 is connected with the damping adjusting ring 14 and the wedge-shaped piece 12 through screws, so that the connecting rod 13, the damping adjusting ring 14 and the wedge-shaped piece 12 are convenient to disassemble and replace.

[0046] In a further embodiment of the present application, the lower end of the fixing seat 6 penetrates through the support frame 5 and is screwed with the connecting column 4, the connecting column 4 is a stepped shaft with a gradually decreasing diameter from top to bottom, and the lower end of the handle 1 is provided with a through hole abutting against the eaves of the variable-diameter end of the stepped shaft. The lower half of the connecting column 4 is clamped in the through hole, and the support frame 5 is tightly screwed on the lower shell of the handle 1, so as to clamp and limit the connecting column 4 to provide a support base for the hook head.

[0047] The connecting column 4 is sleeved with the locking piece 2 abutting against the sidewall of the lower end of the handle 1, and the lower end of the connecting column 4 is screwed with the locking nut 3 abutting against the lower end of the locking piece 2. The connecting column 4 is reinforced by the locking nut 3.

[0048] In a further embodiment of the present application, the extension cylinder 9 is detachably connected with the damping seat 11. The sidewall of the extension cylinder 9 is provided with a circular hole, and the sidewall of the damping seat 11 is provided with a threaded hole. The extension cylinder 9 and the damping seat 11 are detachably installed by screwing a screw through the circular hole into the threaded hole.

[0049] The above description is only a preferred embodiment of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can make equivalent replacements or changes to the technical scheme and the inventive concept of the present application within the technical scope disclosed by the present application, which should be covered by the protection scope of the present application.

[0050] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, the person skilled in the art can combine and combine the different embodiments or features of the embodiments or examples described in the present application without contradiction.

[0051] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application. The person skilled in the art can make changes, modifications, replacements and modifications to the above embodiments within the scope of the present application.

Claims

1. A hook head damping adjustment structure for an endoscope, comprising a hook head, a steering structure is arranged in the hook head, and a handle (1) is connected to the lower end of the steering structure, characterized in that, The damping is generated by the contact of the hook head and the damping seat (11) arranged in the handle (1); the spring (8) is arranged between the damping seat (11) and the handle (1), the extension cylinder (9) is arranged on the outer wall of the damping seat (11), the outer edge surface of the extension cylinder (9) is provided with a plurality of lifting shafts (10), and the handle (1) is provided with a rotatable wedge-shaped piece (12) at the upper end of the lifting shaft (10).

2. The hook tip damping adjustment structure for an endoscope according to claim 1, characterized by The upper end of the handle (1) is provided with an arc-shaped groove (15) corresponding to the lifting shaft (10), the arc-shaped groove (15) is inserted with a connecting rod (13) at intervals, the upper ends of all the connecting rods (13) are arranged out of the arc-shaped groove (15) and are jointly connected with a damping adjusting ring (14) rotatably arranged on the handle (1), and the lower end of each connecting rod (13) is detachably connected with the corresponding wedge-shaped piece (12).

3. The hook tip damping adjustment structure for an endoscope according to claim 2, characterized by A plurality of connecting rods (13) are arranged between each wedge-shaped piece (12) and the damping adjusting ring (14).

4. The hook tip damping adjustment structure for an endoscope according to claim 1, characterized by The steering structure comprises a radial bearing (17) and a support shaft (7) arranged in the radial bearing (17), the damping seat (11) and the spring (8) are sleeved on the support shaft (7), the lower end of the support shaft (7) is screw-mounted with a fixing seat (6), the handle (1) is tightly mounted with a support frame (5) coaxial with the support shaft (7), and the fixing seat (6) is embedded in the support frame (5).

5. The hook tip damping adjustment structure for an endoscope according to claim 4, characterized in that The lower end of the fixing seat (6) penetrates the support frame (5) and is screw-mounted with a connecting column (4), the connecting column (4) is a stepped shaft with a gradually decreasing diameter from top to bottom, and the lower end of the handle (1) is provided with a through hole abutting against the edge eaves of the variable-diameter end of the stepped shaft.

6. The hook tip damping adjustment structure for an endoscope according to claim 5, characterized by The connecting column (4) is sleeved with a locking piece (2) abutting against the lower end side wall of the handle (1), and the lower end of the connecting column (4) is screw-mounted with a locking nut (3) abutting against the lower end of the locking piece (2).

7. The hook tip damping adjustment structure for an endoscope according to claim 4, characterized by The support frame (5) is provided with a D-shaped counterbore at the center, and the fixing seat (6) is embedded in the counterbore and the embedded part is D-shaped.

8. The hook tip damping adjustment structure for an endoscope according to claim 4, characterized by The hook head comprises an upper sphere (18) and a hemispherical pressing piece (16) tightly mounted at the lower end of the upper sphere (18), the upper end of the upper sphere (18) is provided with a handle (19), the pressing piece (16) is mounted on the bearing sleeve of the radial bearing (17), and the pressing piece (16) contacts the damping seat (11) to generate damping.

9. The hook tip damping adjustment structure for an endoscope according to claim 8, characterized by The upper end of the damping seat (11) is a hemispherical flared portion matched with the pressing piece (16), and the lower end is a cylindrical sleeve arranged on the support shaft (7).

10. The hook tip damping adjustment structure for an endoscope according to claim 1, characterized by The extension cylinder (9) is detachably connected with the damping seat (11).

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