Universal joint capable of being added with lubricating oil

Abstract

The utility model provides a universal joint capable of being added with lubricating oil, and belongs to the technical field of universal joints. The universal joint structure solves the problems that an existing universal joint structure is troublesome in lubricating oil adding, a dust cover needs to be taken down from a shaft rod for adding, and time and labor are wasted. The universal joint capable of being added with the lubricating oil comprises a universal joint body and a shaft rod, dust covers are arranged on the universal joint body and the shaft rod, a plurality of balls are arranged between the universal joint body and the shaft rod, and rolling grooves for the balls to roll are formed in the universal joint body. A connecting sleeve for being connected with the lower end of the dust cover is arranged on the universal joint body, lubricating oil channels are formed in the positions, corresponding to the rolling grooves, of the side wall of the universal joint body, a control assembly is arranged at the position, corresponding to the lubricating oil channels, of the universal joint body, and the control assembly is composed of a fixed part, a baffle, a sliding part, a reset spring and a control rod. The utility model has the advantage that the lubricating oil can be added.

Description

Technical Field

[0001] The utility model belongs to the technical field of universal joints, and relates to a universal joint, in particular to a universal joint capable of adding lubricating oil. Background Art

[0002] A universal joint, namely a universal joint head, is a mechanical part for realizing power transmission at a variable angle and is used in positions where the direction of the transmission axis needs to be changed. It is the "joint" part of the universal transmission device of an automobile drive system. The combination of a universal joint and a transmission shaft is called a universal joint transmission device. On a vehicle with a front-mounted engine and rear-wheel drive, the universal joint transmission device is installed between the output shaft of the transmission and the input shaft of the main reducer of the drive axle; while on a vehicle with a front-mounted engine and front-wheel drive, the transmission shaft is omitted, and the universal joint is installed between the front axle half shaft responsible for both driving and steering and the wheel.

[0003] For the existing universal joint structure, adding lubricating oil is very troublesome. It is necessary to remove the dust cover from the shaft rod for adding, which is time-consuming and laborious, bringing some inconveniences to the work of adding grease and maintaining the interior for the staff and cannot meet the usage requirements. Summary of the Invention

[0004] The purpose of the utility model is to provide a universal joint capable of adding lubricating oil for the above problems existing in the prior art.

[0005] The purpose of the utility model can be achieved by the following technical solutions: A universal joint capable of adding lubricating oil includes a universal joint body and a shaft rod. A dust cover is arranged on the universal joint body and the shaft rod. A plurality of balls are arranged between the universal joint body and the shaft rod. The universal joint body is provided with rolling grooves for the plurality of balls to roll respectively. The characteristic is that the universal joint body is provided with a connecting sleeve for connecting the lower end part of the dust cover. Lubricating oil channels are arranged on the side wall of the universal joint body at positions corresponding to each rolling groove. A control component is arranged on the universal joint body at a position corresponding to the lubricating oil channels. The control component consists of a fixing part, a baffle, a sliding part, a return spring and a control rod. The universal joint body is provided with an installation groove for installing the control component. One end of the baffle extends out of the installation groove and is connected to the control rod. The other end of the baffle extends into the universal joint body and is used for controlling the opening and closing of the lubricating oil channels. The sliding part and the return spring are both arranged in the installation groove.

[0006] In the above universal joint capable of adding lubricating oil, the fixing part is arranged at the lower end of the universal joint body, and the fixing part and the universal joint body are integrally formed.

[0007] In the above universal joint capable of adding lubricating oil, the number of the lubricating oil channels is the same as that of the control components, and lubricating oil is added to each rolling groove through the lubricating oil channels.

[0008] In the above universal joint capable of adding lubricating oil, the upper end of the dust cover is fixedly arranged on the shaft rod through a small clamp, and the lower end of the dust cover is fixedly arranged on the universal joint body through a large clamp.

[0009] Compared with the prior art, the universal joint capable of adding lubricating oil has a plurality of lubricating oil channels on the universal joint body that are the same as those inside the universal joint body. Workers can add lubricating oil to the inside of the universal joint body through the lubricating oil channels without disassembling the dust cover. Description of the Drawings

[0010] Figure 1 is a schematic structural view of the present utility model.

[0011] Figure 2 is a schematic cross-sectional structural view of the present utility model.

[0012] In the figure, 1, universal joint body; 2, shaft rod; 3, dust cover; 4, ball; 5, connecting sleeve; 6, lubricating oil channel; 7, control assembly; 8, fixing part; 9, baffle; 10, sliding part; 11, return spring; 12, control rod; 13, small clamp; 14, large clamp. Detailed Embodiment

[0013] The following are specific embodiments of the present utility model in combination with the drawings, and the technical solutions of the present utility model will be further described, but the present utility model is not limited to these embodiments.

[0014] As Figure 1 、 Figure 2 shown, the universal joint capable of adding lubricating oil includes a universal joint body 1 and a shaft rod 2. A dust cover 3 is arranged on the universal joint body 1 and the shaft rod 2. A plurality of balls 4 are arranged between the universal joint body 1 and the shaft rod 2. Rolling grooves for the plurality of balls 4 to roll are formed on the universal joint body 1. A connecting sleeve 5 for connecting the lower end of the dust cover 3 is arranged on the universal joint body 1. Lubricating oil channels 6 are formed on the side wall of the universal joint body 1 at positions corresponding to the respective rolling grooves. The lubricating oil channels 6 are inclined so that lubricating oil can enter the rolling grooves inside the universal joint body 1 faster. A control assembly 7 is arranged on the universal joint body 1 at a position corresponding to the lubricating oil channels 6. The control assembly 7 is composed of a fixing part 8, a baffle 9, a sliding part 10, a return spring 11 and a control rod 12. An installation groove for installing the control assembly 7 is formed on the universal joint body 1. One end of the baffle 9 extends out of the installation groove and is connected to the control rod 12. The other end of the baffle 9 extends into the universal joint body 1 and is used to control the opening and closing of the lubricating oil channels 6. The sliding part 10 and the return spring 11 are both arranged in the installation groove.

[0015] More specifically, the fixing part 8 is arranged at the lower end of the universal joint body 1, and the fixing part 8 and the universal joint body 1 are integrally formed.

[0016] More specifically, the number of the lubricating oil channels 6 is the same as that of the control components 7, and lubricating oil is added to each of the rolling grooves through the lubricating oil channels 6.

[0017] More specifically, in the initial state, the lubricating oil channel 6 is in a closed state. When lubricating oil needs to be added to the universal joint body 1, by pulling the control rod 12, the sliding part 10 moves downward, the return spring 11 is in a compressed state, the baffle moves downward, and the lubricating oil channel 6 is in an open state. The staff can add lubricating oil to the inside of the universal joint body 1 through the lubricating oil channel 6. After the lubricating oil is added, release the control rod 12, the return spring 11 rebounds, the sliding part 10 moves upward, and the lubricating oil channel 6 is closed again to prevent dust or other impurities from entering the universal joint body 1 and affecting the work.

[0018] More specifically, the upper end of the dust cover 3 is fixedly arranged on the shaft rod 2 through a small clamp 13, and the lower end of the dust cover 3 is fixedly arranged on the universal joint body 1 through a large clamp 14.

[0019] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Those skilled in the art to which the present invention pertains can make various modifications or supplements to the described specific embodiments or use similar ways to replace them, but will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0020] Although terms such as the universal joint body 1, the shaft rod 2, the dust cover 3, the ball 4, the connecting sleeve 5, the lubricating oil channel 6, the control component 7, the fixing part 8, the baffle 9, the sliding part 10, the return spring 11, the control rod 12, the small clamp 13, and the large clamp 14 in the figure are used more in this article, the possibility of using other terms is not excluded. Using these terms is only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A universal joint capable of adding lubricating oil, comprising a universal joint body (1) and a shaft (2), wherein the universal joint body (1) and the shaft (2) are provided with dust covers (3), a plurality of balls (4) are provided between the universal joint body (1) and the shaft (2), and the universal joint body (1) is provided with rolling grooves for the plurality of balls (4) to roll respectively, characterized in that: The universal joint body (1) is provided with a connecting sleeve (5) for connecting the lower end of the dust cover (3); a lubricating oil passage (6) is provided on the side wall of the universal joint body (1) at a position relative to each rolling groove; a control component (7) is provided on the universal joint body (1) at a position relative to the lubricating oil passage (6); the control component (7) is composed of a fixing portion (8), a baffle (9), a sliding portion (10), a return spring (11) and a control rod (12); a mounting groove for mounting the control component (7) is provided on the universal joint body (1); one end of the baffle (9) extends out of the mounting groove and is connected to the control rod (12); the other end of the baffle (9) extends into the universal joint body (1) and is used to control the opening and closing of the lubricating oil passage (6); the sliding portion (10) and the return spring (11) are both arranged in the mounting groove.

2. A universal joint capable of adding lubricating oil according to claim 1, characterized in that: The fixing portion (8) is arranged at the lower end of the universal joint body (1), and the fixing portion (8) and the universal joint body (1) are integrally formed.

3. A universal joint capable of adding lubricating oil according to claim 1, characterized in that: The number of the lubricating oil passages (6) is the same as the number of the control components (7), and lubricating oil is added to each of the rolling grooves through the lubricating oil passages (6).

4. A universal joint capable of adding lubricating oil according to claim 1, characterized in that: The upper end of the dust cover (3) is fixedly arranged on the shaft rod (2) via a small clamp (13), and the lower end of the dust cover (3) is fixedly arranged on the universal joint body (1) via a large clamp (14).

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