Universal joint swinging and locking mechanism

Abstract

The utility model relates to a universal joint swinging and locking mechanism which comprises a supporting rod, an ejector rod, a first rotating piece, a second rotating piece, a soft rope, a joint assembly, a base and a locking mechanism, a penetrating hole is formed in the lower portion of the second rotating piece, the first rotating piece is arranged in the second rotating piece, and the top end of the supporting rod penetrates through the penetrating hole to be fixedly connected with the first rotating piece. One end of the ejector rod is fixed to one side of the upper portion of the base, the joint assembly is hinged to the other end of the ejector rod, one end of the soft rope is connected with the joint assembly, the other end of the soft rope is connected with the first rotating piece, and the supporting rod is connected with the base through the locking mechanism. The universal joint swinging and locking mechanism is simple in structure and convenient to mount and dismount; the number of parts is small, and the manufacturing cost can be greatly reduced; and a joint locking mechanism is additionally arranged, so that the joint cannot be bent and deformed after the working angle is adjusted.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to a universal joint swing and locking mechanism. Background Art

[0002] The structure commonly used on the market for controlling joint bending is assembled from multiple parts, and the joint bending is achieved by pulling a soft rope. The structure is relatively complex, the installation is cumbersome and difficult to operate. The large number of parts will also increase the cost. During operation, the joint may also bend and deform, affecting the use effect. Utility Model Content

[0003] In order to solve the technical problems existing in the prior art, the utility model provides a universal joint swing and locking mechanism for controlling the bending of the joint, and adds a locking mechanism to prevent the joint from bending and deforming after the working angle is adjusted.

[0004] To achieve the above purpose, the technical solution of the utility model is as follows:

[0005] A universal joint swing and locking mechanism comprises a support rod, a push rod, a first rotating member, a second rotating member, a soft rope, a joint assembly, a base and a locking mechanism, wherein a through hole is provided at the lower portion of the second rotating member, the first rotating member is arranged in the second rotating member, the top end of the support rod passes through the through hole and is fixedly connected to the first rotating member, one end of the push rod is fixed to one side of the upper portion of the base, the joint assembly is hinged to the other end of the push rod, one end of the soft rope is connected to the joint assembly, the other end of the soft rope is connected to the first rotating member, and the support rod is connected to the base through the locking mechanism.

[0006] As a preferred technical solution, there are four soft ropes, and a small hole is provided on both sides of the upper part and the lower part of the first rotating member. The soft ropes correspond to the small holes one by one, and one end of the soft rope is tied to the corresponding small hole on the first rotating member.

[0007] As a preferred technical solution, when the support rod rotates, the first rotating member and the second rotating member rotate along with the support rod, the soft rope on one side of the top rod is tightened, driving the joint assembly to rotate toward the side where the soft rope is tightened.

[0008] As a preferred technical solution, an arc-shaped flange is provided at the lower part of the base, and a plurality of first latching teeth are evenly arranged on the upper surface of the arc-shaped flange.

[0009] As a preferred technical solution, the locking mechanism includes an eccentric wheel, a push-pull rod, a clamping plate and a sliding unit. The eccentric wheel is installed under the support rod. One end of the push-pull rod is hinged to the eccentric wheel, and the other end of the push-pull rod is hinged to the clamping plate. The clamping plate is connected to the support rod through the sliding unit, and the clamping plate is provided with a second clamping tooth matching the first clamping tooth.

[0010] As a preferred technical solution, the sliding unit includes a sliding groove and a sliding block arranged on the support rod, the sliding block is slidably connected to the sliding groove, and the clamping plate is connected to the sliding block.

[0011] As a preferred technical solution, the locking mechanism also includes a torsion spring, one end of which is fixed on the eccentric wheel, and the other end of which is fixed below the installation position of the eccentric wheel.

[0012] As a preferred technical solution, when the locking mechanism is working, the eccentric wheel rotates downward, the push-pull rod drives the clamping plate to move downward, the first latch tooth engages with the second latch tooth, the position of the support rod is fixed, and the torsion spring is in a compressed state.

[0013] Compared with the prior art, the universal joint swing and locking mechanism of the utility model has the following beneficial effects:

[0014] (1) Simple structure, easy to install and disassemble;

[0015] (2) Fewer parts can significantly reduce manufacturing costs.

[0016] (3) A joint locking mechanism has been added to prevent the joint from bending and deforming after the working angle is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the universal joint swing and locking mechanism of the utility model;

[0018] Figure 2 It is a schematic diagram of the state in which the support rod in the universal joint swing and locking mechanism of the utility model rotates to the right;

[0019] Figure 3 It is a schematic diagram of the state in which the support rod in the universal joint swing and locking mechanism of the utility model rotates to the left;

[0020] Figure 4 It is a top view of the universal joint swing and locking mechanism of the utility model;

[0021] Figure 5 It is a structural schematic diagram of a locking mechanism in the universal joint swing and locking mechanism of the utility model.

[0022] In the figure: 1. Support rod; 2. First rotating member; 3. Second rotating member; 4. Soft rope; 5. Joint assembly; 6. Eccentric wheel; 7. Push-pull rod; 8. Clamping plate; 9. Base; 10. Torsion spring; 11. Push rod. DETAILED DESCRIPTION

[0023] The technical solution of the utility model is further described below in conjunction with specific implementation methods:

[0024] like Figure 1 As shown, a universal joint swing and locking mechanism includes a support rod 1, a push rod 11, a first rotating member 2, a second rotating member 3, a soft rope 4, a joint assembly 5, a base 9 and a locking mechanism. The lower portion of the second rotating member 3 is provided with a through hole, the first rotating member 2 is arranged in the second rotating member 3, the top end of the support rod 1 passes through the through hole and is fixedly connected to the first rotating member 2, the second rotating member 3 can rotate around the support rod 1, one end of the push rod 11 is fixed to one side of the upper portion of the base 9, the joint assembly 5 is hinged to the other end of the push rod 11, and the support rod 1 is connected to the base 9 through a locking mechanism.

[0025] There are four soft ropes 4, and a small hole is provided on both sides of the upper part and the lower part of the first rotating member 2. The soft ropes 4 correspond to the small holes one by one. One end of the soft rope 4 is tied to the corresponding small hole on the first rotating member 2, and the other end of the soft rope 4 is connected to the joint assembly 5 so as to adjust the swing angle of the joint assembly 5 in various directions.

[0026] like Figure 2 and Figure 3 As shown, when the support rod 1 rotates, the first rotating member 2 and the second rotating member 3 rotate along with the support rod 1, and the soft rope 4 on one side of the top rod 11 is tightened, driving the joint assembly 5 to rotate toward the side where the soft rope 4 is tightened. After the joint assembly 5 rotates to the right position, the support rod 1 is fixed to the base 9 by the locking mechanism.

[0027] like Figure 5 As shown, the lower part of the base 9 is provided with an arc-shaped flange, and a plurality of first latching teeth are evenly arranged on the upper surface of the arc-shaped flange. The locking mechanism includes an eccentric wheel 6, a push-pull rod 7, a clamping plate 8 and a sliding unit. The eccentric wheel 6 is installed below the support rod 1, one end of the push-pull rod 7 is hinged to the eccentric wheel 6, and the other end of the push-pull rod 7 is hinged to the clamping plate 8. The clamping plate 8 is connected to the support rod 1 through the sliding unit, and a second latching tooth matching the first latching tooth is arranged on the lower surface of the clamping plate 8.

[0028] The sliding unit includes a slide groove and a slider set on the support rod 1. The slider is slidably connected to the slide groove, and the clamping plate 8 is fixedly connected to the slider. When the clamping plate 8 moves with the push-pull rod 7, it drives the slider to rotate in the slide groove. When the second tooth of the clamping plate 8 engages with the first tooth, the slider is also fixed with the clamping plate 8, so that the support rod 1 can no longer rotate left and right.

[0029] like Figure 1 As shown, the locking mechanism further includes a torsion spring 10 , one end of which is fixed on the eccentric wheel 6 , and the other end of which is fixed below the installation position of the eccentric wheel 6 .

[0030] When the eccentric wheel 6 rotates downward, the push-pull rod 7 drives the clamping plate 8 to move downward, the first latching tooth engages with the second latching tooth, the position of the support rod 1 is fixed, and the torsion spring 10 is in a compressed state. When the eccentric wheel 6 is released, the torsion spring 10 provides an upward elastic force, driving the eccentric wheel 6 and the push-pull rod 7 to move upward, causing the clamping plate 8 to move upward, the second latching tooth separates from the first latching tooth, and the rotation of the support rod 1 is no longer restricted.

[0031] The working method of the universal joint swing and locking mechanism of the utility model is as follows:

[0032] Rotate the support rod 1 to change the position of the first rotating member 2 and the second rotating member 3, thereby tensioning the soft rope 4 and bending the joint assembly 5. After adjusting the bending angle of the joint assembly 5, rotate the eccentric wheel 6 downward to drive the push-pull rod 7 and the clamping plate 8 to move downward. The slider on the support rod 1 slides downward in the slide groove as the clamping plate 8 moves. The second clamping teeth on the clamping plate 8 engage with the first clamping teeth on the arc-shaped flange of the base 9, thereby fixing the support rod 1 to prevent the joint assembly 5 from bending and deforming during use. After use, release the eccentric wheel 6. Under the elastic force of the torsion spring 10, the push-pull rod 7 moves upward, driving the clamping plate 8 to separate from the arc-shaped flange on the base 9. The joint lock is released, and the support rod 1 can rotate freely again.

[0033] This embodiment is only a further explanation of the present invention, not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed, but as long as it is within the scope of the claims of the present invention, it will be protected by the patent law.

Claims

1. A universal joint swing and locking mechanism, characterized in that: It includes a support rod, a top rod, a first rotating member, a second rotating member, a soft rope, a joint assembly, a base and a locking mechanism. The lower part of the second rotating member is provided with a through hole. The first rotating member is arranged in the second rotating member. The top end of the support rod passes through the through hole and is fixedly connected to the first rotating member. One end of the top rod is fixed to one side of the upper part of the base. The joint assembly is hinged to the other end of the top rod. One end of the soft rope is connected to the joint assembly, and the other end of the soft rope is connected to the first rotating member. The support rod is connected to the base through a locking mechanism.

2. A universal joint swing and locking mechanism according to claim 1, characterized in that: There are four soft ropes, and a small hole is provided on both sides of the upper part and the lower part of the first rotating member. The soft ropes correspond to the small holes one by one, and one end of the soft rope is tied to the corresponding small hole on the first rotating member.

3. A universal joint swing and locking mechanism according to claim 2, characterized in that: When the support rod rotates, the first rotating member and the second rotating member rotate along with the support rod, and the soft rope on one side of the top rod is tightened, driving the joint assembly to rotate toward the side where the soft rope is tightened.

4. A universal joint swing and locking mechanism according to claim 1, characterized in that: An arc-shaped flange is arranged at the lower part of the base, and a plurality of first locking teeth are evenly arranged on the upper surface of the arc-shaped flange.

5. A universal joint swing and locking mechanism according to claim 4, characterized in that: The locking mechanism includes an eccentric wheel, a push-pull rod, a clamping plate and a sliding unit. The eccentric wheel is installed under the support rod. One end of the push-pull rod is hinged to the eccentric wheel, and the other end of the push-pull rod is hinged to the clamping plate. The clamping plate is connected to the support rod through the sliding unit, and the clamping plate is provided with a second clamping tooth matching the first clamping tooth.

6. A universal joint swing and locking mechanism according to claim 5, characterized in that: The sliding unit comprises a sliding groove and a sliding block arranged on the support rod, the sliding block is slidably connected to the sliding groove, and the clamping plate is fixedly connected to the sliding block.

7. A universal joint swing and locking mechanism according to claim 5, characterized in that: The locking mechanism also includes a torsion spring, one end of which is fixed on the eccentric wheel, and the other end of which is fixed below the installation position of the eccentric wheel.

8. A universal joint swing and locking mechanism according to claim 7, characterized in that: When the locking mechanism is working, the eccentric wheel rotates downward, the push-pull rod drives the clamping plate to move downward, the first latch tooth engages with the second latch tooth, the position of the support rod is fixed, and the torsion spring is in a compressed state.

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