Central rotating shaft

Abstract

The utility model discloses a central rotating shaft which comprises a first cylinder and a second cylinder, mounting grooves are formed in the side edge of the first cylinder at equal intervals, fixing cylinders are connected into the mounting grooves, and balls are arranged on one sides of the interiors of the fixing cylinders; the second cylinder is arranged on one side of the first cylinder; the second nut penetrates through the interior of the second cylinder to be fixed to one end of the screw rod, the second nut is connected to the surface of the screw rod in a threaded mode, then the first nut penetrates through the interior of the first cylinder to be fixed to the other end of the screw rod, the second nut is connected to the surface of the screw rod in a threaded mode, and the first cylinder and the second cylinder are connected to form installation. By rotating the first cylinder, the balls in the fixed cylinder can rotate in the ball grooves in the second cylinder, under rotation of the first cylinder, the balls can be converted and rotate in the ball grooves, the first cylinder and the second cylinder cannot fall off, the positioning effect is taken into consideration, and a line segment can penetrate in a built-in mode.

Description

Technical Field

[0001] The utility model relates to the technical field of rotating shafts, in particular to a central rotating shaft. Background Art

[0002] The center shaft is a key component in mechanical devices, especially those that need to transmit power or withstand axial forces, namely medical devices, household products, lighting products and other mechanical structures.

[0003] In the prior art, the central rotating shaft can be used to rotate external objects; however, many central rotating shafts lack a connecting structure with the connecting parts during use, so the connecting parts and the central rotating shaft are prone to fall off, the stability is insufficient, the firmness is poor, and the external parts are easily damaged during operation. In view of this, we introduce the central rotating shaft. Utility Model Content

[0004] The purpose of the utility model is to provide a central rotating shaft to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: the central rotating shaft comprises: a first cylinder and a second cylinder;

[0006] The side of the first cylinder is provided with mounting grooves at equal intervals, the mounting grooves and the first cylinder are integrally formed, the interior of the mounting grooves is connected to a fixing cylinder, a ball is provided on one side of the interior of the fixing cylinder, and the ball can rotate inside the fixing cylinder;

[0007] The second cylinder is arranged on one side of the first cylinder, and a ball groove for mounting a ball is provided inside the second cylinder. The ball groove and the second cylinder are integrally formed, and the number of the ball grooves is greater than the number of the balls. The arrangement of the ball grooves facilitates the balls to be changed to different positions.

[0008] A fixing mechanism is arranged between the first cylinder and the second cylinder, and a screw, a first nut and a second nut of the fixing mechanism are arranged inside the first cylinder and the second cylinder respectively, so that the first cylinder and the second cylinder are fixed.

[0009] Preferably, the fixing mechanism includes a first spring ring connected to the surface of the screw, and the two ends of the screw extend to the inside of the first cylinder and the second cylinder respectively. The second nut penetrates the second cylinder and is screwed on the surface of the screw. The second nut and the screw are threadedly connected. The first spring ring is sleeved on the surface of the screw and is located on one side of the second nut. The first spring ring is sleeved on one end of the screw and then the second nut is screwed in so that the second nut squeezes the first spring ring on the surface of the second cylinder to form a fixation. The first nut penetrates the first cylinder and is screwed on the other end of the screw. The surface of the screw is sleeved with a second spring ring and is located on one side of the first nut. The second spring ring is sleeved on the other end of the screw and then the first nut is screwed in so that the first nut squeezes the second spring ring on the surface of the first cylinder to form a fixation.

[0010] Preferably, the surfaces of the first cylinder and the second cylinder are respectively provided with thread grooves, and the thread grooves are integrally formed with the first cylinder and the second cylinder.

[0011] Preferably, threaded positioning holes are provided on the surfaces of the first cylinder and the second cylinder, and positioning screws are connected to the threaded positioning holes.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the utility model inserts the two ends of the screw into the first cylinder and the second cylinder respectively, then inserts the first spring ring, then passes the second nut through the second cylinder and is fixed to one end of the screw, the second nut is screwed on the surface of the screw, and the first spring ring is located on one side of the second nut, then inserts the second spring ring, then passes the first cylinder through the first cylinder and is fixed to the other end of the screw, the second nut is screwed on the surface of the screw, and the second spring ring is located on one side of the first nut, thereby completing the connection between the first cylinder and the second cylinder to form an installation;

[0013] By rotating the first cylinder, the balls inside the fixed cylinder will rotate in the ball groove inside the second cylinder. When the first cylinder rotates, the balls can be converted inside the ball groove to form a rotation, which will not allow the first cylinder and the second cylinder to fall off, making the connection more secure. While taking into account the positioning effect, the line segment can be passed through it to avoid falling, thereby increasing stability and firmness, and making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model when the first cylinder and the second cylinder are three-dimensionally connected;

[0016] Figure 3 It is a schematic diagram of the structure of the side section of the utility model;

[0017] Figure 4 It is a structural schematic diagram of the utility model from the first perspective;

[0018] Figure 5 It is a structural schematic diagram of the utility model from a second viewing angle;

[0019] Figure 6 It is a structural schematic diagram of the screw rod, the second nut and the first nut when they are three-dimensionally connected.

[0020] In the figure: 1. first cylinder; 2. second cylinder; 3. threaded groove; 4. screw; 5. first nut; 6. second nut; 7. mounting groove; 8. threaded positioning hole; 9. fixing cylinder; 10. ball; 11. positioning screw; 12. first spring ring; 13. ball groove; 14. second spring ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-6 The utility model provides a technical solution: a central shaft, comprising: a first cylinder 1, the side of the first cylinder 1 is provided with mounting grooves 7 at equal intervals, the interior of the mounting groove 7 is connected with a fixing cylinder 9, and a ball 10 is arranged on one side of the interior of the fixing cylinder 9;

[0023] A second cylinder 2, the second cylinder 2 is arranged on one side of the first cylinder 1, and a ball groove 13 for mounting the ball 10 is opened inside the second cylinder 2;

[0024] A fixing mechanism is provided between the first cylinder 1 and the second cylinder 2, and a screw 4, a first nut 5 and a second nut 6 of the fixing mechanism are respectively arranged inside the first cylinder 1 and the second cylinder 2, so that the first cylinder 1 and the second cylinder 2 are fixed.

[0025] The fixing mechanism includes a first spring ring 12 connected to the surface of the screw rod 4, the two ends of the screw rod 4 extend to the inside of the first cylinder 1 and the second cylinder 2 respectively, the second nut 6 penetrates the second cylinder 2 and is screwed on the surface of the screw rod 4, the second nut 6 and the screw rod 4 are threadedly connected, the first spring ring 12 is sleeved on the surface of the screw rod 4 and is located on one side of the second nut 6, the first spring ring 12 is sleeved on one end of the screw rod 4, and then the second nut 6 is screwed in, so that the second nut 6 squeezes the first spring ring 12 on the surface of the second cylinder 2 to form a fixation, the first nut 5 penetrates the first cylinder 1 and is screwed on the other end of the screw rod 4, the surface of the screw rod 4 is sleeved with a second spring ring 14 and is located on one side of the first nut 5, the second spring ring 14 is sleeved on the other end of the screw rod 4, and then the first nut 5 is screwed in, so that the first nut 5 squeezes the second spring ring 14 on the surface of the first cylinder 1 to form a fixation.

[0026] The surfaces of the first cylinder 1 and the second cylinder 2 are respectively provided with thread grooves 3 , and the thread grooves 3 are integrally formed with the first cylinder 1 and the second cylinder 2 .

[0027] The surfaces of the first cylinder 1 and the second cylinder 2 are provided with threaded positioning holes 8 , and the threaded positioning holes 8 are connected with positioning screws 11 .

[0028] Specifically, when in use, the two ends of the screw rod 4 are respectively inserted into the first cylinder 1 and the second cylinder 2, and then the first spring ring 12 is inserted, and then the second nut 6 is passed through the second cylinder 2 and fixed to one end of the screw rod 4, so that the second nut 6 is screwed on the surface of the screw rod 4, and the first spring ring 12 is located on one side of the second nut 6, and then the second spring ring 14 is inserted, and then the first nut 5 is passed through the first cylinder 1 and fixed to the other end of the screw rod 4, so that the second nut 6 is screwed on the surface of the screw rod 4, and the second spring ring 14 is located on one side of the first nut 5, and the first cylinder 1 and the second cylinder 2 are connected to form an installation;

[0029] Next, when the first cylinder 1 and the second cylinder 2 need to be rotated, since the fixed cylinder 9 is fixed inside the mounting groove 7, the first cylinder 1 is rotated so that the ball 10 inside the fixed cylinder 9 can rotate at the ball groove 13 inside the second cylinder 2. When the first cylinder 1 is rotated, the ball 10 can be converted inside the ball groove 13 to form a rotation, which will not let the first cylinder 1 and the second cylinder 2 fall off. At the same time, while taking into account the positioning effect, the line segment can be built in and passed through, which is more convenient to use.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. Central rotating shaft, characterized in that: include: A first cylinder (1), wherein mounting grooves (7) are provided at equal intervals on the side of the first cylinder (1), a fixing cylinder (9) is connected to the inside of the mounting groove (7), and a ball (10) is provided on one side of the inside of the fixing cylinder (9); A second cylinder (2), the second cylinder (2) being arranged on one side of the first cylinder (1), and a ball groove (13) for mounting a ball (10) is provided inside the second cylinder (2); A fixing mechanism is provided between the first cylinder (1) and the second cylinder (2), and a screw rod (4), a first nut (5) and a second nut (6) of the fixing mechanism are respectively arranged inside the first cylinder (1) and the second cylinder (2), so that the first cylinder (1) and the second cylinder (2) are fixed.

2. The central rotating shaft according to claim 1, characterized in that: The fixing mechanism comprises a first spring ring (12) connected to the surface of the screw rod (4); the two ends of the screw rod (4) extend into the interior of the first cylinder (1) and the second cylinder (2) respectively; the second nut (6) penetrates the second cylinder (2) and is screwed onto the surface of the screw rod (4); the first spring ring (12) is sleeved on the surface of the screw rod (4) and is located on one side of the second nut (6); the first nut (5) penetrates the first cylinder (1) and is screwed onto the other end of the screw rod (4); the surface of the screw rod (4) is sleeved with a second spring ring (14) and is located on one side of the first nut (5).

3. The central rotating shaft according to claim 1, characterized in that: The surfaces of the first cylinder (1) and the second cylinder (2) are respectively provided with thread grooves (3).

4. The central rotating shaft according to claim 1, characterized in that: Threaded positioning holes (8) are provided on the surfaces of the first cylinder (1) and the second cylinder (2), and positioning screws (11) are connected to the threaded positioning holes (8).

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