Driving shaft inner ball with elastic damping body

Abstract

The utility model relates to the technical field of driving shafts, and discloses a driving shaft inner ball with an elastic damping body, which comprises a main body mechanism, a fixing mechanism is arranged on the left side of the main body mechanism, and a connecting mechanism is arranged on the left side of the fixing mechanism. The rod hole in the side face of the ball cage is connected with the piston rod, the rubber body is arranged in the damping body, pressure and external force are applied to the piston rod in advance through the rubber body, when the external force applied to the piston rod is larger than the pre-filling force of the rubber body in the device, the piston rod is pressed into the damping body, and the rubber body is compressed and reduced along with increase of the stroke. The pressure is increased, the increased pressure acts on the piston rod, when the increased pressure is balanced with the external force, the piston rod stops moving, and when the external force is smaller than the internal acting force, the piston rod completely stretches out and returns to the initial position, and the pressure of the internal elastic rubber body also returns to the initial pre-filling force value. Adjustment and maintenance are not needed in production, and the bearing capacity is large.

Description

Technical Field

[0001] The utility model relates to the technical field of drive shafts, in particular to an inner ball of a drive shaft with an elastic damping body. Background Art

[0002] The inner ball cage, also called the "constant velocity joint", is an important component in the car transmission system. Its function is to transfer the engine power from the transmission to the drive wheels to drive the car at high speed. There are many types of constant velocity joints used in cars, among which the most commonly used are the ball cage type constant velocity joint and the tripod type constant velocity joint. It mainly consists of a sliding sleeve, a three-way shaft, a transmission shaft, a star sleeve, a retaining cage, and a bell housing. Since the constant velocity joint transmits heavy driving torque, is subject to heavy loads, has high transmission accuracy, is in great demand, and is also a safety component, its main parts are all made of precision forgings.

[0003] Existing drive shafts are driven by two, one for steering and the other for driving, which increases the manufacturing cost. Therefore, a drive shaft inner ball with an elastic damping body is needed. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a driving shaft inner ball with an elastic damping body.

[0005] The utility model is implemented by the following technical solutions: a driving shaft inner ball with an elastic damping body, comprising a main body mechanism, a fixing mechanism is arranged on the left side of the main body mechanism, and a connecting mechanism is arranged on the left side of the fixing mechanism;

[0006] The main body mechanism includes a sleeve, a first fixing ring is fixedly connected to the left side of the sleeve, a second fixing ring is fixedly connected to the right side of the sleeve, a ball cage is fixedly connected to the inner wall of the first fixing ring, a rod hole is opened on the left side of the ball cage, a steel ball is rotatably connected to the surface of the ball cage, a piston rod is fixedly connected to the inner wall of the second fixing ring, and a damping body is sleeved on the right side of the piston rod.

[0007] Through the above technical solution, two first fixing rings and second fixing rings of different sizes are arranged on both sides of the rubber sheath, so as to fix the fixing sleeve on the surface through the structure of its inner wall.

[0008] As a further improvement of the above solution, a plurality of steel balls are provided, and the plurality of steel balls are distributed at equal distances.

[0009] Through the above technical scheme, the rod hole on the side of the ball cage is connected to the piston rod, and a colloid is arranged inside the damping body, the colloid is pre-charged with pressure, and an external force acts on the piston rod. When the external force acting on the piston rod is greater than the pre-charged pressure of the colloid inside the device, the piston rod is pressed into the cylinder body, and as the stroke increases, the colloid is compressed, the body pressure decreases, and the pressure increases. The increased pressure acts on the piston rod, and when the size is balanced with the external force, the piston rod stops moving. When the external force is less than the internal force, the piston rod is fully extended and returns to the original position, and the pressure of the internal elastic colloid also returns to the initial pre-charged value. The elastic damping body has a compact structure, simple operation, no adjustment and maintenance during production, large load-bearing capacity, long service life and saves roller replacement time.

[0010] As a further improvement of the above scheme, the fixing mechanism includes an outer cover, which is arranged on the outer wall of the first fixing ring, the surface of the outer cover is provided with an installation groove, the surface of the installation groove is provided with a first fixing sleeve, the top of the first fixing sleeve is provided with a first threaded hole, and the inner wall of the first threaded hole is threadedly connected with a first bolt.

[0011] According to the above technical solution, a mounting groove is provided on the surface of the outer cover to set the first fixing sleeve, and the first fixing ring of the inner wall is fixed by screwing the bolts.

[0012] As a further improvement of the above solution, the model of the installation groove corresponds to that of the first fixing sleeve, and two threaded holes are provided, and the two threaded holes are symmetrically distributed with the first bolt as the center.

[0013] As a further improvement of the above solution, the connecting mechanism includes a second fixing sleeve, the second fixing sleeve is arranged on the surface of the second fixing ring, a second bolt is opened on the top of the second fixing sleeve, and the output shaft is fixedly connected to the left side of the outer cover.

[0014] According to the technical solution, the second fixing sleeve is arranged on the surface of the second fixing ring, and the bolts are screwed into the screw holes at the top of the second fixing sleeve for fixing.

[0015] As a further improvement of the above solution, the second fixing sleeve is made of metal material.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The utility model is connected with the piston rod through the rod hole on the side of the ball cage, and a colloid is arranged inside the damping body. The colloid is pre-charged with pressure. When an external force acts on the piston rod, when the external force acting on the piston rod is greater than the pre-charged pressure of the colloid inside the device, the piston rod is pressed into the damping body. As the stroke of entry increases, the colloid is compressed, the body pressure decreases, the pressure increases, and the increased pressure acts on the piston rod. When the size of the pressure is balanced with the external force, the piston rod stops moving. When the external force is less than the internal force, the piston rod is fully extended and returns to the original position. The pressure of the internal elastic colloid also returns to the initial pre-charged value. The elastic damping body has a compact structure, simple operation, no need for adjustment and maintenance during production, large load-bearing capacity, long service life and saves roller replacement time. The damping body replaces the original balance rod, so that the drive shaft has the ability of steering and driving at the same time, reduces the cost of manufacturing an additional drive shaft, and forms an integrated structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the ball cage of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the damping body of the utility model;

[0021] Figure 4 This is a schematic diagram of the outer cover structure of the utility model.

[0022] Description of main symbols:

[0023] 1. Main body; 101. Sheath; 102. First fixing ring; 103. Second fixing ring; 104. Ball cage; 105. Rod hole; 106. Steel ball; 107. Piston rod; 108. Damping body; 109. Colloid; 2. Fixing mechanism; 201. Outer cover; 202. Mounting groove; 203. First fixing sleeve; 204. Threaded hole; 205. First bolt; 3. Connecting mechanism; 301. Second fixing sleeve; 302. Second bolt; 303. Output shaft. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. Example

[0025] Please combine Figure 1-4 , a driving shaft inner ball with an elastic damping body in this embodiment comprises a main body mechanism 1, a fixing mechanism 2 is arranged on the left side of the main body mechanism 1, and a connecting mechanism 3 is arranged on the left side of the fixing mechanism 2;

[0026] The main body mechanism 1 includes a sleeve 101, a first fixing ring 102 is fixedly connected to the left side of the sleeve 101, a second fixing ring 103 is fixedly connected to the right side of the sleeve 101, a ball cage 104 is fixedly connected to the inner wall of the first fixing ring 102, a rod hole 105 is opened on the left side of the ball cage 104, a steel ball 106 is rotatably connected to the surface of the ball cage 104, a piston rod 107 is fixedly connected to the inner wall of the second fixing ring 103, and a damping body 108 is sleeved on the right side of the piston rod 107. By arranging two first fixing rings 102 and second fixing rings 103 of different sizes on both sides of the rubber sleeve 101, it is used to fix it by arranging a fixing sleeve on the surface with the structure of its inner wall.

[0027] A plurality of steel balls 106 are provided, and the plurality of steel balls 106 are equidistantly distributed, and are connected to the piston rod 107 through the rod hole 105 on the side of the ball cage 104, and a colloid 109 is provided inside the damping body 108, and the colloid 109 is pre-charged with pressure. When an external force acts on the piston rod 107, when the external force acting on the piston rod 107 is greater than the pre-charged force of the colloid 109 inside the device, the piston rod 107 is pressed into the cylinder body, and as the stroke of entry increases, the colloid 109 is compressed, the body pressure decreases, and the pressure increases. The increased pressure acts on the piston rod 107, and when the pressure is balanced with the external force, the piston rod 107 stops moving. When the external force is less than the internal force, the piston rod 107 is fully extended and returns to its original position, and the pressure of the internal elastic colloid 109 also returns to the initial pre-charged force value. The elastic damping body has a compact structure, simple operation, no need for adjustment and maintenance during production, large bearing capacity, long service life and saves roller replacement time.

[0028] The fixing mechanism 2 includes an outer cover 201, which is arranged on the outer wall of the first fixing ring 102. A mounting groove 202 is provided on the surface of the outer cover 201, and a first fixing sleeve 203 is provided on the surface of the mounting groove 202. A first threaded hole 204 is provided on the top of the first fixing sleeve 203, and a first bolt 205 is threadedly connected to the inner wall of the first threaded hole 204. The mounting groove 202 is provided on the surface of the outer cover 201 to set the first fixing sleeve 203, and the first fixing ring 102 on the inner wall is fixed, and fixed by tightening the bolt.

[0029] The model of the mounting groove 202 matches and corresponds to the first fixing sleeve 203, and two threaded holes 204 are provided, and the two threaded holes 204 are symmetrically distributed with the first bolt 205 as the center. The connecting mechanism 3 includes a second fixing sleeve 301, which is arranged on the surface of the second fixing ring 103, and a second bolt 302 is provided on the top of the second fixing sleeve 301. The output shaft 303 is fixedly connected to the left side of the outer cover 201, and the second fixing sleeve 301 is arranged on the surface of the second fixing ring 103, and the bolt is screwed into the screw hole on the top of the second fixing sleeve 301 for fixing.

[0030] The second fixing sleeve 301 is made of metal material.

[0031] The implementation principle of a drive shaft inner ball with an elastic damping body in the embodiment of the present application is as follows: the drive shaft inner ball with an elastic damping body is provided with two first fixing rings 102 and second fixing rings 103 of different sizes on both sides of a rubber material sheath 101, which are used to fix the inner wall structure of the inner wall by providing a fixing sleeve on the surface, and the rod hole 105 on the side of the ball cage 104 is connected to the piston rod 107, and a colloid 109 is provided inside the damping body 108, and the colloid 109 is pre-charged with pressure. When an external force acts on the piston rod 107, when the external force acting on the piston rod 107 is greater than the device When the internal colloid 109 is pre-charged, the piston rod 107 is pressed into the cylinder body. As the stroke increases, the colloid 109 is compressed, the pressure decreases, and the pressure increases. The increased pressure acts on the piston rod 107. When the pressure is balanced with the external force, the piston rod 107 stops moving. When the external force is less than the internal force, the piston rod 107 is fully extended and returns to its original position. The pressure of the internal elastic colloid 109 also returns to the initial pre-charge value. The elastic damping body has a compact structure, simple operation, no need for adjustment and maintenance during production, large load-bearing capacity, long service life and saves roller replacement time.

[0032] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A drive shaft inner ball with an elastic damping body, characterized in that: It comprises a main body mechanism (1), a fixing mechanism (2) is arranged on the left side of the main body mechanism (1), and a connecting mechanism (3) is arranged on the left side of the fixing mechanism (2); The main body mechanism (1) comprises a sleeve (101), a first fixing ring (102) is fixedly connected to the left side of the sleeve (101), a second fixing ring (103) is fixedly connected to the right side of the sleeve (101), a ball cage (104) is fixedly connected to the inner wall of the first fixing ring (102), a rod hole (105) is provided on the left side of the ball cage (104), a steel ball (106) is rotatably connected to the surface of the ball cage (104), a piston rod (107) is fixedly connected to the inner wall of the second fixing ring (103), a damping body (108) is sleeved on the right side of the piston rod (107), and a colloid (109) is fixedly connected to the right side of the piston rod (107).

2. A drive shaft inner ball with an elastic damping body as claimed in claim 1, characterized in that: A plurality of the steel balls (106) are provided, and the plurality of the steel balls (106) are distributed at equal distances.

3. The drive shaft inner ball with elastic damping body according to claim 1, characterized in that: The fixing mechanism (2) comprises an outer cover (201), the outer cover (201) being arranged on the outer wall of the first fixing ring (102), a mounting groove (202) being provided on the surface of the outer cover (201), a first fixing sleeve (203) being provided on the surface of the mounting groove (202), a first threaded hole (204) being provided on the top of the first fixing sleeve (203), and a first bolt (205) being threadedly connected to the inner wall of the first threaded hole (204).

4. A drive shaft inner ball with an elastic damping body as claimed in claim 3, characterized in that: The model of the installation groove (202) corresponds to that of the first fixing sleeve (203), and two threaded holes (204) are provided, and the two threaded holes (204) are symmetrically distributed with the first bolt (205) as the center.

5. A drive shaft inner ball with an elastic damping body as claimed in claim 4, characterized in that: The connecting mechanism (3) comprises a second fixing sleeve (301), the second fixing sleeve (301) being arranged on the surface of the second fixing ring (103), a second bolt (302) being provided on the top of the second fixing sleeve (301), and an output shaft (303) being fixedly connected to the left side of the outer cover (201).

6. A drive shaft inner ball with an elastic damping body as claimed in claim 5, characterized in that: The second fixing sleeve (301) is made of metal material.

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