CN214966906U

CN214966906U - Universal combined arm

Info

Publication number: CN214966906U
Application number: CN202120747016.4U
Authority: CN
Inventors: 吴建明; 李颖强; 巩艳艳
Original assignee: Changzhou Spico Medical Equipment Co ltd
Current assignee: Changzhou Spico Medical Equipment Co ltd
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2021-12-03
Anticipated expiration: 2031-04-13

Abstract

The utility model belongs to the technical field of medical instrument, concretely relates to universal combination arm. This universal combination arm includes: the direction adjusting seat is internally provided with an adjusting screw rod assembly, and the adjusting screw rod assembly is provided with a spiral groove; the two sides of the direction adjusting seat are both connected with arm rods, and the tail end of each arm rod is connected with a spherical hinge joint; a plurality of sections of ejector rods are arranged in the arm rod in an end-to-end manner, and the front end and the rear end of the arm rod are respectively abutted against the spiral groove and the spherical hinge joint; when the adjusting screw rod component is screwed up, the spiral groove becomes shallow to gradually support the ejector rods outwards, so that the ejector rods are mutually supported to tightly press the spherical hinge joint. This universal combination arm's arm pole is inside to set up a plurality of sections ejector pins, and the spiral recess shallows outwards to support out the ejector pin when adjusting screw subassembly top spin, thereby makes the ejector pin support each other tightly and compress tightly the ball-type hinge joint, and the ejector pin non-deformable of the short root of multistage, universal combination arm's locking is more firm, makes the operation go on smoothly.

Description

Universal combined arm

Technical Field

The utility model belongs to the technical field of medical instrument, concretely relates to universal combination arm.

Background

The universal combined arm is an instrument for providing assistance in the operation process, the basic unit of the common universal combined arm can be an arm rod connected through a ball hinge, wherein the arm rod at the tail end only needs one end connected with the ball hinge, and the free end can be used for fixing various devices, so that various assistance functions can be provided at any position through rotating the arm rod according to the actual conditions in the operation process.

After the arm lever is adjusted, the ball hinge needs to be compressed through the ejector rod arranged in the arm lever, but when the arm lever is long, the situation that the ball hinge cannot be compressed due to the deformation of the ejector rod can occur, and then the universal combined arm is rocked.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an universal combination arm to solve universal combination arm and warp the unable problem of locking because of the ejector pin.

In order to solve the technical problem, the utility model provides an universal combination arm, include: the direction adjusting seat is internally provided with an adjusting screw rod assembly, and the adjusting screw rod assembly is provided with a spiral groove; the two sides of the direction adjusting seat are both connected with arm rods, and the tail end of each arm rod is connected with a spherical hinge joint; a plurality of sections of ejector rods are arranged in the arm rod in an end-to-end manner, and the front end and the rear end of the arm rod are respectively abutted against the spiral groove and the spherical hinge joint; when the adjusting screw rod component is screwed up, the spiral groove becomes shallow to gradually support the ejector rods outwards, so that the ejector rods are mutually supported to tightly press the spherical hinge joint.

Further, the direction-adjusting seat comprises: the rotating seat is provided with a screw accommodating hole; and the lifting sleeve is sleeved on the adjusting screw rod assembly through internal threads and is clamped at the hole opening of the screw rod accommodating hole so as to lift the adjusting screw rod assembly through rotation.

Further, the adjusting screw assembly includes: the screw is matched with the inner wall of the lifting sleeve through threads; the pressing block is provided with a spiral groove which becomes shallow gradually downwards, is sleeved on the screw rod through threads, and abuts against the lifting sleeve so as to downwards rotate relative to the screw rod when the screw rod is upwards rotated; the top block is provided with a spiral groove which gradually becomes shallow upwards and is fixed at the tail end of the screw rod so as to be screwed up along with the screw rod; the bottom of the spiral groove is abutted to the end part of the ejector rod of the adjacent section.

Furthermore, a boss is arranged on the inner wall of the lifting sleeve, and the adjusting screw rod assembly is matched with the inner wall of the boss through threads; the part of the screw rod protruding out of the boss is sleeved with an adjusting nut, and the adjusting nut is abutted against the boss to adjust the height of the jacking block; and a gasket is arranged between the pressing block and the lifting sleeve to adjust the distance between the pressing block and the jacking block.

Furthermore, one end of the ejector rod, which is contacted with the spherical hinge joint, is a concave spherical surface; and one end of the ejector rod, which is abutted against the spiral groove, is a convex spherical surface.

Furthermore, the lifting sleeve is fixedly connected with a rotating handle.

Further, the tail end of the arm lever is provided with an articulated head seat for accommodating the spherical articulated head.

The beneficial effects of the utility model are that, the utility model discloses aim at solving universal combination arm and warp the problem of unable locking because of the ejector pin, through the accent that is equipped with adjusting screw subassembly in inside to seat both sides connection armed lever, the inside of armed lever sets up a plurality of sections ejector pins, the spiral recess shallows outwards supports out the ejector pin when adjusting screw subassembly top spin, thereby makes the ejector pin support tightly each other and compress tightly the ball-type hinge joint, the ejector pin non-deformable of multistage stub, the locking of universal combination arm is more firm, makes the operation go on smoothly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for the embodiments or the prior descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a cross-sectional view of the present universal compound arm;

FIG. 2 is a cross-sectional view of the adjustment screw assembly;

FIG. 3 is a perspective view of the present universal jointed arm;

in the figure:

the direction adjusting base 100, the rotating base 110, the screw accommodating hole 120, the lifting sleeve 130 and the boss 131;

the adjusting screw assembly 200, the screw 210, the pressing block 220, the spiral groove 230, the top block 240 and the adjusting nut 250;

the arm rod 300, the spherical hinge joint 310, the top rod 320, the concave spherical surface 321 and the convex spherical surface 322;

a spacer 400;

rotating the handle 500;

an articulated head 600.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments of the ordinary skilled person in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1, the utility model provides a universal combination arm, include: the direction-adjusting base 100 is internally provided with an adjusting screw assembly 200, and the adjusting screw assembly 200 is provided with a spiral groove 230; the two sides of the direction-adjusting seat 100 are both connected with arm levers 300, and the tail end of each arm lever 300 is respectively connected with a spherical hinge joint 310; a plurality of sections of push rods 320 are arranged inside the arm rod 300 in an end-to-end manner, and the front end and the rear end of the push rods respectively abut against the spiral groove 230 and the spherical hinge joint 310; when the adjusting screw assembly 200 is screwed, the spiral groove 230 becomes shallow to push the sections of the push rods 320 outwards step by step, so that the sections of the push rods 320 are mutually pressed to compress the spherical hinge joint 310.

The two sides of the direction-adjusting seat 100, which is internally provided with the adjusting screw component 200, are connected with the arm rod 300, the arm rod 300 is internally provided with a plurality of sections of ejector rods 320, when the adjusting screw component 200 is screwed up, the spiral groove 230 becomes shallow to outwards support the ejector rods 320, so that the ejector rods 320 are mutually supported tightly to compress the spherical hinge joint 310, the ejector rods 320 with multiple sections of short roots are not easy to deform, the universal combined arm is locked more firmly, and the operation can be smoothly carried out.

As shown in fig. 1, the direction-adjusting base 100 may include: a rotary base 110, which is provided with a screw accommodating hole 120 and comprises an upper part and a lower part which are clamped together and can rotate relatively; and a lifting sleeve 130 which is fitted over the adjustment screw assembly 200 through an internal thread and is snapped in an aperture of the screw receiving hole 120 to lift the adjustment screw assembly 200 by rotating.

In this embodiment, the adjusting screw assembly 200 may include: a screw 210 which is screw-engaged with an inner wall of the lifting sleeve 130; a pressing block 220, which is provided with a spiral groove 230 that becomes shallow gradually downwards and is sleeved on the screw 210 through threads, and the pressing block 220 abuts against the lifting sleeve 130 so as to rotate downwards relative to the screw 210 when the screw 210 rotates upwards; a top block 240 having a spiral groove 230 which is gradually shallower upward and fixed to a rear end of the screw bar 210 to be rotated upward with the screw bar 210; the groove bottom of the spiral groove 230 is abutted against the end of the adjacent section of the top rod 320.

The principle that the top rod 320 is pressed by the adjusting screw rod assembly 200 in a rotating mode is as follows: when the lifting sleeve 130 is rotated, the lifting sleeve 130 is engaged with the rotary base 110, so the screw 210 is rotated upwards, the pressing block 220 threaded on the screw 210 is blocked by the lifting sleeve 130 and can only rotate downwards relative to the screw 210, and the top block 240 fixedly connected with the screw 210 is rotated upwards. Since the pressing block 220 is provided with the spiral groove 230 which becomes shallow downwards, the groove bottom becomes shallow when the pressing block rotates downwards, the top block 240 is ejected, and the spiral groove 230 which becomes shallow upwards is provided on the pressing block 220, the groove bottom becomes shallow when the pressing block rotates upwards, the top block 240 is ejected, and the top rods 320 are mutually abutted to tightly press the ball-shaped hinge joint 310.

In this embodiment, a boss 131 may be disposed on an inner wall of the lifting sleeve 130, and the adjusting screw assembly 200 is in threaded engagement with the inner wall of the boss 131; the part of the screw 210 protruding out of the boss 131 is sleeved with an adjusting nut 250, and the adjusting nut 250 is abutted against the boss 131 to adjust the height of the top block 240; a gasket 400 is arranged between the pressing block 220 and the lifting sleeve 130 to adjust the distance between the pressing block 220 and the jacking block 240, the height of the screw 210 can be adjusted by using an adjusting nut 250 before use, the thickness of the gasket 400 is adjusted, namely, the jacking block 240 is pre-tightened, and the jacking block 240 can be completely ejected out to lock the universal combined arm only by slightly rotating the lifting sleeve 130 in the operation process.

In order to make the mandrel 320 fully contact with the ball-type joint 310 and the spiral groove 230, one end of the mandrel 320 contacting with the ball-type joint 310 is a concave spherical surface 321; the end of the top rod 320 abutting against the spiral groove 230 is a convex spherical surface 322.

As shown in fig. 2, the lifting sleeve 130 may be fixedly connected with a rotating handle 500, and the rotating handle 500 may be made of a silica gel material, so as to improve the hand feeling.

Optionally, in this embodiment, the rear end of the arm 300 is provided with an articulated joint seat 600 to accommodate the ball-type articulated joint 310.

To sum up, the utility model provides an universal combination arm, through the accent that is equipped with adjusting screw subassembly in inside to seat both sides connecting arm pole, the inside of arm pole sets up a plurality of sections ejector pins, and the helical groove shallows when adjusting screw subassembly top spin outwards supports out the ejector pin, thereby makes the ejector pin support tightly each other and compress tightly the ball-type hinge joint, the ejector pin non-deformable of the short root of multistage, and the locking of universal combination arm is more firm, makes the operation carry out smoothly

The rotating base used in the present application is a universal standard or a part known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experiments. Also, the present application is not directed to any improvement in software programs.

In the embodiments provided in the present application, it should be understood that the disclosed system and apparatus may be implemented in other ways. The above-described embodiments are merely illustrative, and for example, the division of the mechanism is merely a logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In light of the foregoing description of the preferred embodiments of the present invention, it is to be understood that various changes and modifications may be made by those skilled in the art 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. A gimbaled composite arm, comprising:

the direction adjusting seat (100) is internally provided with an adjusting screw assembly (200), and the adjusting screw assembly (200) is provided with a spiral groove (230); and

the two sides of the direction-adjusting seat (100) are both connected with arm rods (300), and the tail end of each arm rod (300) is respectively connected with a spherical hinge joint (310);

a plurality of sections of ejector rods (320) are arranged inside the arm rod (300) in an end-to-end manner, and the front end and the rear end of the arm rod are respectively abutted against the spiral groove (230) and the spherical hinge joint (310);

when the adjusting screw rod assembly (200) is screwed up, the spiral groove (230) becomes shallow to push out the ejector rods (320) step by step, so that the ejector rods (320) are mutually tightly pressed to compress the spherical hinge joint (310).

2. The gimbal assembly arm of claim 1,

the direction-adjusting seat (100) comprises:

a rotating base (110) provided with a screw accommodating hole (120); and

and the lifting sleeve (130) is sleeved on the adjusting screw rod assembly (200) through internal threads and is clamped at the hole of the screw rod accommodating hole (120) so as to adjust the screw rod assembly (200) through rotation.

3. The gimbal assembly arm of claim 2,

the adjusting screw assembly (200) comprises:

a screw (210) which is engaged with the inner wall of the lifting sleeve (130) by a thread;

the pressing block (220) is provided with a spiral groove (230) which becomes shallow gradually downwards, is sleeved on the screw rod (210) through threads, and abuts against the lifting sleeve (130) so as to downwards rotate relative to the screw rod (210) when the screw rod (210) upwards rotates;

a top block (240) which is provided with a spiral groove (230) which becomes shallow upwards and is fixed at the tail end of the screw rod (210) so as to rotate upwards along with the screw rod (210);

the groove bottom of the spiral groove (230) is abutted against the end part of the ejector rod (320) of the adjacent section.

4. The gimbal assembly arm of claim 3,

a boss (131) is arranged on the inner wall of the lifting sleeve (130), and the adjusting screw assembly (200) is matched with the inner wall of the boss (131) through threads;

the part of the screw rod (210) protruding out of the boss (131) is sleeved with an adjusting nut (250), and the adjusting nut (250) is abutted against the boss (131) to adjust the height of the top block (240);

a gasket (400) is arranged between the pressing block (220) and the lifting sleeve (130) to adjust the distance between the pressing block (220) and the jacking block (240).

5. The gimbal assembly arm of claim 4,

one end of the ejector rod (320) which is contacted with the spherical hinge joint (310) is an inward concave spherical surface (321);

one end of the ejector rod (320) abutting against the spiral groove (230) is a convex spherical surface (322).

6. The gimbal assembly arm of claim 2,

the lifting sleeve (130) is fixedly connected with a rotating handle (500).

7. The gimbal assembly arm of claim 1,

the tail end of the arm lever (300) is provided with an articulated head seat (600) for accommodating the spherical articulated head (310).