Anti-seismic tripod universal joint

Abstract

The utility model relates to the technical field of automobile parts, in particular to an anti-shock type three-fork universal joint which comprises a ball sleeve, a movable groove is formed in the bottom of the ball sleeve, a three-fork joint shaft body is arranged in the movable groove in a rotating mode, three directional shafts are arranged on the periphery of the three-fork joint shaft body, a rotating shaft is arranged on the top of the ball sleeve, and a transmission gear is fixedly connected to the upper end of the rotating shaft. The lower end of the rotating shaft is fixedly connected with a positioning column, the outer side of the positioning column is sleeved with a fixed sleeve, the fixed sleeve is detachably connected with the positioning column, the upper end of the rotating shaft is provided with a movable sleeve, the movable sleeve is slidably connected with the rotating shaft, and a spring is fixedly connected between the movable sleeve and the rotating shaft. When the ball sleeve or the rotating shaft is impacted by external force, the acting force can be transmitted to the movable sleeve and the fixed sleeve on the outer side of the rotating shaft, the movable sleeve slides along the shaft body of the rotating shaft after being stressed, the spring between the movable sleeve and the fixed sleeve contracts, absorbs and relieves the impact force, and the shock resistance of the ball sleeve and the rotating shaft is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile parts, especially to an anti-vibration triple cardan joint. BACKGROUND

[0002] The triple joint is used in connection with the transmission shaft as an intermediate part for variable angle power transmission, and the included angle between the connected parts can be changed within a certain range through the triple joint, thereby changing the direction and position of the transmission shaft, and the triple joint is widely used in automobile parts.

[0003] A low-noise drum-shaped flat shaft head constant velocity triple cardan joint is disclosed in Chinese patent No. CN201821175427.5, which belongs to the technical field of automobile cardan joints. The triple cardan joint can increase the rotational swing angle of the triple cardan joint, has small noise, simple structure, and is convenient to use. The triple cardan joint comprises two cardan joint assemblies and a connecting assembly. The cardan joint assembly comprises a cardan joint sleeve and a triple cardan joint. The triple cardan joint is slidably connected to the cardan joint sleeve. The left and right ends of the connecting assembly are fixedly connected to the triple cardan joints of the two cardan joint assemblies, respectively. In the prior art, the rotating shaft connected to the triple joint shaft sleeve is only used for rotational control. When the frame body shakes and impacts the shaft body during rotation of the shaft body on the triple joint, it is difficult to effectively absorb and relieve the impact, the overall anti-vibration performance of the triple joint is weak, and the transmission accuracy is affected. SUMMARY

[0004] To solve the problem that the shaft body on the existing cardan joint is difficult to effectively absorb and relieve the impact when the frame body shakes and impacts the shaft body during rotation of the shaft body, the overall anti-vibration performance of the triple joint is weak, and the transmission accuracy is affected, the utility model provides an anti-vibration triple cardan joint.

[0005] To achieve the purpose of the utility model, the utility model realizes the following technical scheme: an anti-vibration triple cardan joint, comprising a ball sleeve, an active slot is formed in the bottom of the ball sleeve, a triple joint shaft body is rotatably arranged in the active slot, three directional shafts are arranged around the triple joint shaft body, and the directional shafts are rotatably connected to the triple joint shaft body through ball bodies;

[0006] A rotating shaft is arranged at the top of the ball sleeve, a transmission gear is fixedly connected to the upper end of the rotating shaft, a positioning column is fixedly connected to the lower end of the rotating shaft, and the positioning column is sleeved outside the rotating shaft;

[0007] A fixed sleeve is sleeved outside the positioning column, the fixed sleeve is detachably connected to the positioning column, an active sleeve is arranged at the upper end of the rotating shaft, the active sleeve is slidably connected to the rotating shaft, and a spring is fixedly connected between the active sleeve and the rotating shaft.

[0008] Further improvement lies in that the positioning column is sleeved with a first pad plate outside, the positioning column is fixedly connected with the first pad plate, and the first pad plate is fixedly connected to the upper end of the ball sleeve.

[0009] Further improvement lies in that the upper end of the rotating shaft is provided with a second pad plate, the second pad plate is sleeved outside the rotating shaft, the second pad plate is fixedly connected with the rotating shaft, and the movable sleeve is arranged below the second pad plate.

[0010] Further improvement lies in that a plurality of fixing bolts are arranged in the fixing sleeve, the fixing bolts pass through the fixing sleeve and are threadedly connected with the fixing sleeve, a plurality of threaded holes are formed in the upper end of the first pad plate, and the threaded holes are threadedly connected with the fixing bolts.

[0011] Further improvement lies in that a plurality of movable holes are formed in the top of the movable sleeve, a plurality of guide columns are fixedly arranged on the second pad plate, the upper ends of the guide columns are fixedly connected with the second pad plate, the lower ends of the guide columns penetrate the movable sleeve, the guide columns are slidably connected with the movable holes, and the lower ends of the guide columns are threadedly connected with limiting nuts for preventing the movable sleeve from falling off.

[0012] Further improvement lies in that an annular clamping groove and a second rubber ring are arranged between the fixing sleeve and the first pad plate, the second rubber ring is fixedly connected to the lower end of the fixing sleeve, the annular clamping groove is formed in the upper end of the first pad plate, and the annular clamping groove is clamped with the second rubber ring.

[0013] Further improvement lies in that a first rubber ring and a limiting groove are arranged between the movable sleeve and the second pad plate, the first rubber ring is fixedly connected to the upper end of the movable sleeve, the limiting groove is formed in the lower end of the second pad plate, and the first rubber ring is slidably connected with the limiting groove.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] When the ball sleeve or the rotating shaft is impacted by external force, the force is transmitted to the movable sleeve and the fixing sleeve outside the rotating shaft, the movable sleeve slides along the rotating shaft body after being stressed, the spring between the movable sleeve and the fixing sleeve is contracted, the impact force is absorbed and relieved, and the anti-shock capability of the ball sleeve and the rotating shaft is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort.

[0017] Figure 1 is the structure diagram of the three-pronged joint shaft body in the utility model.

[0018] Figure 2 is the structure diagram of the rotating shaft in the utility model.

[0019] Figure 3 Figure 1 is a structure diagram of the ball sleeve in the utility model.

[0020] Figure 4 Figure 2 is a structure diagram of the spring in the utility model.

[0021] Wherein: 1, ball sleeve; 2, movable groove; 3, three-pronged joint shaft body; 4, directional shaft; 5, ball body; 6, first backing plate; 7, positioning column; 8, rotating shaft; 9, second backing plate; 10, transmission gear; 11, movable sleeve; 12, fixed sleeve; 13, spring; 14, annular clamping groove; 15, threaded hole; 16, guide column; 17, movable hole; 18, first rubber ring; 19, fixed bolt; 20, second rubber ring. DETAILED DESCRIPTION

[0022] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0023] According to Figure 1 , 2 , 3, 4, the embodiment proposes an anti-seismic three-pronged universal joint, which comprises a ball sleeve 1, the bottom of the ball sleeve 1 is provided with a movable groove 2, a three-pronged joint shaft body 3 is rotatably arranged in the movable groove 2, three directional shafts 4 are arranged around the three-pronged joint shaft body 3, and the directional shafts 4 are rotatably connected with the three-pronged joint shaft body 3 through ball bodies 5.

[0024] The movable groove 2 formed in the bottom of the ball sleeve 1 can provide space for the rotation of the three-pronged joint shaft body 3 and the directional shafts 4.

[0025] The top of the ball sleeve 1 is provided with a rotating shaft 8, the upper end of the rotating shaft 8 is fixedly connected with a transmission gear 10, the lower end of the rotating shaft 8 is fixedly connected with a positioning column 7, and the positioning column 7 is sleeved outside the rotating shaft 8.

[0026] The driving member is matched with the transmission gear 10 to drive the rotating shaft 8 to rotate, the rotating shaft 8 drives the ball sleeve 1 to rotate when rotating, and the ball sleeve 1 changes the transmission axis direction and position through the movable groove 2 and the three-pronged joint shaft body 3.

[0027] The outer side of the positioning column 7 is sleeved with a fixed sleeve 12, the fixed sleeve 12 is detachably connected with the positioning column 7, the upper end of the rotating shaft 8 is provided with a movable sleeve 11, the movable sleeve 11 is slidably connected with the rotating shaft 8, and a spring 13 is fixedly connected between the movable sleeve 11 and the rotating shaft 8.

[0028] When the ball sleeve 1 or the rotating shaft 8 is impacted by external force, the force is transmitted to the movable sleeve 11 and the fixed sleeve 12 outside the rotating shaft 8, the movable sleeve 11 slides along the shaft body of the rotating shaft 8 after being stressed, the spring 13 between the movable sleeve 11 and the fixed sleeve 12 is contracted, and the impact force is absorbed and relieved, thereby improving the anti-shock capability of the ball sleeve 1 and the rotating shaft 8.

[0029] It is worth further explaining that the positioning column 7 is sleeved with the first pad plate 6, the positioning column 7 is fixedly connected with the first pad plate 6, and the first pad plate 6 is fixedly connected to the upper end of the ball sleeve 1. The first pad plate 6 is fixedly connected at the connection between the positioning column 7 and the ball sleeve 1, and plays the role of a reinforcing rib to improve the structural strength of the connection between the ball sleeve 1 and the first pad plate 6.

[0030] The rotating shaft 8 is provided with the second pad plate 9, the second pad plate 9 is sleeved outside the rotating shaft 8, the second pad plate 9 is fixedly connected with the rotating shaft 8, and the movable sleeve 11 is arranged below the second pad plate 9. The second pad plate 9 is fixedly connected at the connection between the transmission gear 10 and the rotating shaft 8, and also plays the role of improving the structural strength of the connection between the rotating shaft 8 and the transmission gear 10.

[0031] Regarding the installation and fixation of the fixed sleeve 12, specifically, a plurality of fixed pins 19 are arranged in the fixed sleeve 12, the fixed pins 19 pass through the fixed sleeve 12 and are threadedly connected with the fixed sleeve 12, a plurality of threaded holes 15 are formed in the upper end of the first pad plate 6, and the threaded holes 15 are threadedly connected with the fixed pins 19. The fixed sleeve 12 is fixed to the first pad plate 6 by pin connection, and when the fixation between the fixed sleeve 12 and the first pad plate 6 is released, the fixed pins 19 can be rotated out of the threaded holes 15.

[0032] Regarding the installation and connection of the movable sleeve 11, specifically, a plurality of movable holes 17 are formed in the top of the movable sleeve 11, a plurality of guide columns 16 are fixedly arranged on the second pad plate 9, the upper ends of the guide columns 16 are fixedly connected with the second pad plate 9, the lower ends of the guide columns 16 penetrate the movable sleeve 11, the guide columns 16 are slidably connected with the movable holes 17, and the lower ends of the guide columns 16 are threadedly connected with limiting nuts for preventing the movable sleeve 11 from falling off. The diameter of the limiting nut is greater than the hole diameter of the movable hole 17, and when the movable sleeve 11 is taken off from the bottom of the second pad plate 9, the limiting nut can be rotated out of the bottom of the guide column 16.

[0033] In order to protect the fixed sleeve 12 and the first pad plate 6, the annular clamping groove 14 and the second rubber ring 20 are arranged between the fixed sleeve 12 and the first pad plate 6, the second rubber ring 20 is fixedly connected to the lower end of the fixed sleeve 12, the annular clamping groove 14 is arranged on the upper end of the first pad plate 6, and the annular clamping groove 14 is clamped with the second rubber ring 20. After the fixed sleeve 12 is fixed on the upper end of the first pad plate 6, the second rubber ring 20 at the lower end of the fixed sleeve 12 is clamped into the annular clamping groove 14 at the upper end of the first pad plate 6, so that the stability of the connection between the fixed sleeve 12 and the first pad plate 6 is improved, and when the fixed sleeve 12 is impacted, the fixed sleeve 12 and the first pad plate 6 can be protected by absorbing the impact force.

[0034] In order to protect the movable sleeve 11 and the second pad plate 9, the first rubber ring 18 and the limiting groove are arranged between the movable sleeve 11 and the second pad plate 9, the first rubber ring 18 is fixedly connected to the upper end of the movable sleeve 11, the limiting groove is arranged on the lower end of the second pad plate 9, and the first rubber ring 18 is slidably connected with the limiting groove. When the movable sleeve 11 on the outer side of the rotating shaft 8 floats up and down under the action of force, the first rubber ring 18 fixed to the top of the movable sleeve 11 also slides along the limiting groove, so that the damping of the movable sleeve 11 during movement is increased, and the second pad plate 9 and the movable sleeve 11 are protected.

[0035] Working principle of the application:

[0036] The movable groove 2 arranged at the bottom of the ball sleeve 1 can provide space for rotation of the three-pronged joint shaft body 3 and the directional shaft 4. The driving member cooperates with the transmission gear 10 to drive the rotating shaft 8 to rotate, and the rotating shaft 8 drives the ball sleeve 1 to rotate at the same time, and the ball sleeve 1 changes the transmission axis direction and position through the movable groove 2 and the three-pronged joint shaft body 3. When the ball sleeve 1 or the rotating shaft 8 is impacted by external force, the force is transmitted to the movable sleeve 11 and the fixed sleeve 12 on the outer side of the rotating shaft 8, the movable sleeve 11 slides along the shaft body of the rotating shaft 8 after being stressed, the spring 13 between the movable sleeve 11 and the fixed sleeve 12 is contracted, and the impact force is absorbed and relieved, so that the anti-shock ability of the ball sleeve 1 and the rotating shaft 8 is improved.

[0037] In the description of the application, it should be noted that the positions or position relationships indicated by the terms “upper”, “lower” and the like are based on the positions or position relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular position, be constructed and operated in a particular position, and therefore cannot be understood as a limitation on the application. Unless otherwise specified and limited, the terms “mounting”, “connection”, “connection” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above-mentioned terms in the application can be understood according to the specific circumstances.

[0038] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above. Rather, the general scope of the application is to be determined by the appended claims and their equivalents.

Claims

1. An anti-shock type of triple cardan joint comprising a ball sleeve (1) having a movable slot (2) formed in the bottom of the ball sleeve (1), and a triple joint shaft body (3) rotating in the movable slot (2), characterized in that, The periphery of the three-pronged joint shaft body (3) is provided with three directional shafts (4), which are rotationally connected with the three-pronged joint shaft body (3) through ball bodies (5); The top of the ball sleeve (1) is provided with a rotating shaft (8), the upper end of the rotating shaft (8) is fixedly connected with a transmission gear (10), and the lower end of the rotating shaft (8) is fixedly connected with a positioning column (7), the positioning column (7) is sleeved outside the rotating shaft (8); The outer side of the positioning column (7) is sleeved with a fixed sleeve (12), the fixed sleeve (12) is detachably connected with the positioning column (7), the upper end of the rotating shaft (8) is provided with a movable sleeve (11), the movable sleeve (11) is slidably connected with the rotating shaft (8), and the spring (13) is fixedly connected between the movable sleeve (11) and the rotating shaft (8).

2. The shock resistant cardan joint according to claim 1, characterized in that: The outer side of the positioning column (7) is sleeved with a first backing plate (6), the positioning column (7) is fixedly connected with the first backing plate (6), and the first backing plate (6) is fixedly connected to the upper end of the ball sleeve (1).

3. The shock resistant cardan joint of claim 1 wherein: The upper end of the rotating shaft (8) is provided with a second backing plate (9), the second backing plate (9) is sleeved outside the rotating shaft (8), the second backing plate (9) is fixedly connected with the rotating shaft (8), and the movable sleeve (11) is located below the second backing plate (9).

4. The shock resistant cardan joint of claim 2, wherein: A plurality of fixed bolts (19) are arranged in the fixed sleeve (12), the fixed bolts (19) pass through the fixed sleeve (12) and are threadedly connected with the fixed sleeve (12), a plurality of threaded holes (15) are formed in the upper end of the first backing plate (6), and the threaded holes (15) are threadedly connected with the fixed bolts (19).

5. The shock resistant cardan joint according to claim 3, characterized in that: A plurality of movable holes (17) are formed in the top of the movable sleeve (11), a plurality of guide columns (16) are fixedly arranged on the second backing plate (9), the upper ends of the guide columns (16) are fixedly connected with the second backing plate (9), the lower ends of the guide columns (16) penetrate the movable sleeve (11), the guide columns (16) are slidably connected with the movable holes (17), and the lower ends of the guide columns (16) are threadedly connected with limiting nuts for preventing the movable sleeve (11) from falling off.

6. The shock-resistant Cardan joint according to claim 4, characterized in that: An annular clamping groove (14) and a second rubber ring (20) are arranged between the fixed sleeve (12) and the first backing plate (6), the second rubber ring (20) is fixedly connected to the lower end of the fixed sleeve (12), the annular clamping groove (14) is formed in the upper end of the first backing plate (6), and the annular clamping groove (14) is clamped with the second rubber ring (20).

7. The shock resistant cardan joint of claim 5 wherein: A first rubber ring (18) and a limiting groove are arranged between the movable sleeve (11) and the second backing plate (9), the first rubber ring (18) is fixedly connected to the upper end of the movable sleeve (11), the limiting groove is formed in the lower end of the second backing plate (9), and the first rubber ring (18) is slidably connected with the limiting groove.

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