Universal joint cross shaft convenient to lubricate

Abstract

The universal joint cross shaft convenient to lubricate comprises a shaft body, a shaft sleeve and a telescopic oil injection assembly, a shaft diameter is arranged on the periphery of the shaft body, an oil storage cavity is formed in the shaft body, an overflow hole communicated with the oil storage cavity is formed in a shaft neck, and a sealing seat in the telescopic oil injection assembly is located in the oil storage cavity; by injecting oil liquid for lubrication into the oil storage cavity, when the cross shaft needs to be lubricated, through cooperation of the supporting rods, the sealing seat is made to be away from the overflow hole, the oil liquid flows to the outside of the shaft diameter through a gap between the sealing seat and the overflow hole, and the oil liquid flows to the outside of the shaft diameter through the gap between the sealing seat and the overflow hole. Due to the fact that the shaft diameter is sleeved with the shaft sleeve, under blocking of the shaft sleeve, oil can flow towards the periphery of the shaft diameter, the overflow hole is covered through the sealing seat, sealing of the oil can be achieved, and therefore a user can conveniently conduct lubrication operation on the cross shaft in time.

Description

Technical Field

[0001] The present application relates to the technical field of cross shafts, and in particular to a universal joint cross shaft that is easy to lubricate. Background Art

[0002] Universal joints, also known as cross joints or cross joints, are widely used components in mechanical transmission systems, especially in vehicle power transmission systems. Their function is to achieve variable-angle power transmission and are used in positions where the direction of the transmission axis needs to be changed. Most existing cross shafts are greased at the journal to achieve lubrication. However, as the grease is gradually consumed with use, it needs to be replenished regularly. However, if the grease is consumed too quickly between two oilings, it may lead to insufficient lubrication, thereby increasing the risk of wear and failure. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned problem and provide a universal joint cross shaft which is easy to lubricate.

[0004] The technical solution of this application is achieved as follows:

[0005] The present application provides a universal joint cross shaft that is easy to lubricate, including a shaft body, a shaft sleeve, and a telescopic oil injection assembly. The shaft body has a shaft neck, and the shaft necks are provided in plurality and evenly distributed around the shaft body. The shaft sleeves are provided and respectively sleeved on the shaft necks.

[0006] The shaft body is provided with an oil storage cavity, the shaft neck is provided with an overflow hole connected with the oil storage cavity, and the telescopic oil injection assembly is arranged in the oil storage cavity;

[0007] The shaft body is provided with an opening, which is communicated with the oil storage chamber. The telescopic oil injection assembly includes a support rod and a sealing seat. The sealing seat is located in the oil storage chamber and connected to the support rod. The other end of the support rod extends through the opening to the outside of the shaft body. A handle is provided on the support rod located outside the shaft body. When the sealing seat is located in the oil storage chamber, an oil storage area is formed between the sealing seat and the oil storage chamber.

[0008] With the cooperation of the support rod, when the handle is close to the shaft body, the sealing seat covers the overflow hole, and when the handle is away from the shaft body, a flow gap is formed between the sealing seat and the overflow hole;

[0009] The sealing seat is evenly distributed with through holes.

[0010] In one embodiment, a notch is provided on the end surface of the journal, and an oil guide groove is provided on the outer periphery of the journal;

[0011] One end of the notch is connected to the overflow hole, and the other end is connected to the oil guide groove;

[0012] There are several notches and oil guide grooves and they are evenly distributed along the circumferential direction of the journal.

[0013] In one embodiment, the telescopic oil injection assembly further comprises an elastic member, one end of the elastic member is connected to the top of the oil storage chamber, and the other end is connected to the sealing seat;

[0014] Through the cooperation of the elastic member and the support rod, the telescopic oil injection assembly has a sealing state and an oil injection state;

[0015] When in the sealing state, the elastic member does not undergo elastic deformation, and the support rod drives the handle portion to approach the shaft body, so that the outer periphery of the sealing seat covers the overflow hole;

[0016] When the oil is injected, the support rod drives the handle away from the shaft body, and the elastic member is compressed, so that the outer periphery of the sealing seat is away from the overflow hole.

[0017] In one embodiment, a sealing sleeve is provided at the bottom of the outer periphery of the shaft neck, the sealing sleeve is located at the connection between the shaft neck and the shaft body, and a sealing ring is provided at the bottom of the outer periphery of the shaft sleeve;

[0018] When the shaft sleeve is installed on the shaft neck, the sealing ring is embedded in the sealing sleeve.

[0019] In one embodiment, the top ring within the sleeve is provided with an inclined end portion and forms a flow guide area within the sleeve;

[0020] When the bushing is installed on the journal, the top of the journal is located in the flow guide area.

[0021] In one embodiment, the shaft body is further provided with a liquid inlet hole, which is located on one side of the opening;

[0022] A liquid inlet interface is installed on the liquid inlet hole.

[0023] In one embodiment, a thread groove is provided in the liquid inlet hole, and a convex thread matching the thread groove is provided at the bottom of the liquid inlet interface;

[0024] The liquid inlet interface is threadedly connected to the liquid inlet hole through the cooperation of the thread groove and the convex thread.

[0025] The advantages or beneficial effects of the above technical solution include at least:

[0026] When the oil is replenished to the bearing, the oil seal is sealed in the oil storage chamber, and the oil storage chamber is used to replenish the oil to the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings illustrate exemplary embodiments of the present application and together with the description serve to explain the principles of the present application. These drawings are included to provide a further understanding of the present application and are incorporated in and constitute a part of this specification.

[0028] Figure 1 A schematic diagram of the exploded structure of the cross shaft of an embodiment of the present application is presented;

[0029] Figure 2 A schematic diagram of a cross-section structure of an embodiment of the present application is presented;

[0030] Figure 3 A schematic structural diagram of the shaft body according to an embodiment of the present application is presented;

[0031] Figure 4 A schematic diagram of a partial cross-section structure of an embodiment of the present application is presented;

[0032] Figure 5 A schematic structural diagram of a shaft sleeve according to an embodiment of the present application is presented;

[0033] Figure 6 The present application embodiment is presented Figure 1 A in the middle is an enlarged schematic diagram;

[0034] Figure 7 The present application embodiment is presented Figure 1 The enlarged schematic diagram of point B in the middle;

[0035] Reference numerals: 1, shaft body; 11, shaft journal; 111, overflow hole; 112, notch;

[0036] 113, oil guide groove; 114, sealing sleeve; 12, oil storage chamber; 13, opening; 14, liquid inlet;

[0037] 141, thread groove;

[0038] 2. Bushing; 21. Sealing ring; 22. Inclined end; 23. Needle roller;

[0039] 3. Telescopic oil injection assembly; 31. Support rod; 311. Handle; 32. Sealing seat; 321. Through hole; 33. Elastic member;

[0040] 4. Liquid inlet interface; 41. Male thread. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present application in more detail with reference to the accompanying drawings. Although certain embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be construed as limited to the embodiments described herein. Instead, these embodiments are provided to provide a more thorough and complete understanding of the present application. It should be understood that the drawings and embodiments of the present application are for illustrative purposes only and are not intended to limit the scope of protection of the present application.

[0042] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0043] It should be understood that the term "including" and its variations used in this document are open inclusions, that is, "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one other embodiment"; the term "some embodiments" means "at least some embodiments". The relevant definitions of other terms will be given in the description below. It should be noted that the concepts of "first", "second", etc. mentioned in this application are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0044] It should be noted that the modifications of "one" and "several" mentioned in this application are illustrative rather than restrictive. Those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0045] The names of the messages or information exchanged between multiple devices in the embodiments of the present application are only used for illustrative purposes and are not used to limit the scope of these messages or information.

[0046] Reference Figure 1-Figure 7A universal joint cross shaft that is easy to lubricate includes a shaft body 1, a shaft sleeve 2 and a telescopic oil injection assembly 3. The shaft body 1 has a shaft neck 11. The shaft body 1 and the shaft neck 11 are in an integrated design. There are multiple shaft necks 11 and they are evenly distributed around the shaft body 1. There are multiple shaft sleeves 2 and they are respectively sleeved on the shaft necks 11.

[0047] The shaft body 1 has an oil storage chamber 12, the shaft neck 11 has an overflow hole 111 connected to the oil storage chamber 12, and the telescopic oil injection assembly 3 is arranged in the oil storage chamber 12;

[0048] An opening 13 is provided on the shaft body 1, and the opening 13 is communicated with the oil storage chamber 12. The telescopic oil injection assembly 3 includes a support rod 31 and a sealing seat 32. The sealing seat 32 is located in the oil storage chamber 12 and is connected to the support rod 31. The other end of the support rod 31 extends to the outside of the shaft body 1 through the opening 13. A handle portion 311 is provided on the support rod 31 located outside the shaft body 1. The diameter of the handle portion 311 is larger than the diameter of the opening 13. When the sealing seat 32 is located in the oil storage chamber 12, an oil storage area is formed between the sealing seat 32 and the oil storage chamber 12. When the sealing seat 32 is located in the oil storage chamber 12, the outer periphery of the sealing seat 32 is in contact with the inner wall of the oil storage chamber 12, and the area of ​​the oil storage chamber 12 is larger than the volume of the sealing seat 32.

[0049] With the support rod 31, when the handle 311 is close to the shaft body 1, the sealing seat 32 covers the overflow hole 111. When the handle 311 is away from the shaft body 1, a flow gap is formed between the sealing seat 32 and the overflow hole 111, and the oil in the oil storage chamber 12 flows into the overflow hole 111 through the flow gap.

[0050] Through holes 321 are evenly distributed on the sealing seat 32 . The provision of the through holes 321 enables the oil on the sealing seat 32 to flow to the other end of the sealing seat 32 through the through holes 321 .

[0051] Based on the above structure, before the shaft sleeve 2 is installed on the shaft neck 11, the shaft neck 11 must first be coated with grease for lubrication, and oil must be injected into the oil storage chamber 12 for storage, and part of the oil will pass through the through hole 321 provided on the sealing seat 32 and enter the other side of the oil storage chamber 12. When the oil on the shaft neck 11 needs to be replenished, the operator holds the handle 311 to keep the handle 311 away from the shaft body 1, so that the support rod 31 drives the sealing seat 32 away from the overflow hole 111, so that the oil in the oil storage chamber 12 flows out through the overflow hole 111. The oil moves to the outside of the journal 11, and since the sleeve 2 is sleeved on the journal 11, the oil will flow on the outer periphery of the journal 11. When replenishment is not needed, the handle 311 is pressed to make the support rod 31 drive the sealing seat 32 to move to the position of the overflow hole 111, and block the overflow hole 111, so that the oil cannot pass through the overflow hole 111. An oil storage chamber 12 for storing oil is provided on the shaft body 1 and the oil is replenished with the cooperation of the telescopic oiling assembly 3, thereby solving the problem of wear caused by untimely oil replenishment.

[0052] In one embodiment, referring to Figure 1 、 Figure 3 and Figure 6 A notch 112 is provided on the end face of the journal 11, and an oil guide groove 113 is provided on the outer periphery of the journal 11. One end of the notch 112 is connected to the overflow hole 111, and the other end is connected to the oil guide groove 113. There are several notches 112 and oil guide grooves 113 and they are evenly distributed along the circumferential direction of the journal 11. When the oil flows out of the overflow hole 111, it will flow into the oil guide groove 113 along the notch 112, so that the oil is distributed on the outer periphery of the journal 11. There are several notches 112 and oil guide grooves 113, so that the oil can be evenly distributed, thereby improving the overall lubrication effect of the journal 11.

[0053] In one embodiment, referring to Figure 1-Figure 3 , the telescopic oil injection assembly 3 further includes an elastic member 33, which is a telescopic spring or a pressure spring in the prior art, one end of the elastic member 33 is connected to the top of the oil storage chamber 12, and the other end is connected to the sealing seat 32;

[0054] When the oil is injected into the bottle 32, the oil filter 33 will be turned back to the oil pump 31 stopper 33, so that the oil filter 33 will not be injected into the bottle.

[0055] In one embodiment, referring to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 A sealing sleeve 114 is provided at the bottom of the outer periphery of the journal 11. The sealing sleeve 114 is located at the connection between the journal 11 and the shaft body 1. A sealing ring 21 is provided at the bottom of the outer periphery of the sleeve 2. When the sleeve 2 is installed on the journal 11, the sealing ring 21 is embedded in the sealing sleeve 114. The sealing sleeve 114 and the sealing ring 21 are both made of rubber material. By embedding the sealing ring 21 and the sealing sleeve 114 with each other, the oil on the journal 11 can be further sealed to avoid overflow of the oil, thereby extending the storage time of the oil.

[0056] In one embodiment, referring to Figure 1 、 Figure 4 and Figure 5 The top ring of the sleeve 2 is provided with an inclined end portion 22 and a guide area is formed in the sleeve 2. When the sleeve 2 is installed on the journal 11, the top of the journal 11 is located in the guide area. Since the angle of the cross shaft will change during installation, the inclined end portion 22 provided at the top can enable the oil to flow quickly into the journal 11 along the inclination angle of the inclined end portion 22 during the backflow process, thereby avoiding the accumulation of oil.

[0057] In one embodiment, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 7The shaft body 1 is further provided with a liquid inlet hole 14, which is located on one side of the opening 13. The liquid inlet hole 14 is connected to the oil storage chamber 12. A liquid inlet interface 4 is installed on the liquid inlet hole 14. When the oil storage chamber 12 needs to be replenished, the external oil gun is connected to the liquid inlet interface 4 so that the external oil can enter the oil storage chamber 12 through the liquid inlet interface 4, thereby completing the storage of the oil.

[0058] A thread groove 141 is provided in the liquid inlet hole 14, and a convex thread 41 matching the thread groove 141 is provided at the bottom of the liquid inlet interface 4. Through the cooperation of the thread groove 141 and the convex thread 41, the liquid inlet interface 4 is threadedly connected to the liquid inlet hole 14. The threaded connection method can enable the liquid inlet interface 4 to be quickly installed or removed from the liquid inlet hole 14, so that the liquid inlet interface 4 can be replaced after a certain period of use, and the threaded connection method can improve the firmness of the connection.

[0059] In one embodiment, referring to Figure 4 and Figure 5 There is a needle roller 23 in the sleeve 2. There are several needle rollers 23 and they are evenly distributed along the circumferential direction of the sleeve 2. The arrangement of several needle rollers 23 forms a needle roller bearing, which reduces friction and improves transmission efficiency. The even distribution of the needle rollers 23 helps to form and maintain the lubricating oil film, improves the lubrication effect and reduces wear.

[0060] In the description of this application, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limiting this application.

[0061] Those skilled in the art will appreciate that the above embodiments are intended only to clearly illustrate the present application and are not intended to limit the scope of the present application. Other changes or modifications may be made based on the above disclosure, and such changes or modifications are still within the scope of the present application.

Claims

1. A universal joint cross shaft that is easy to lubricate, characterized by: It includes an axle body, a sleeve and a telescopic oil injection assembly. The axle body has a journal, which is evenly distributed around the axle body. The sleeves are respectively sleeved on the journals. The shaft body is provided with an oil storage cavity, the shaft neck is provided with an overflow hole communicating with the oil storage cavity, and the telescopic oil injection assembly is arranged in the oil storage cavity; The shaft body is provided with an opening, the opening being communicated with the oil storage chamber, the telescopic oil injection assembly comprising a support rod and a sealing seat, the sealing seat being located in the oil storage chamber and connected to the support rod, the other end of the support rod extending through the opening to the outside of the shaft body, the support rod located outside the shaft body being provided with a handle, and when the sealing seat is located in the oil storage chamber, an oil storage area is formed between the sealing seat and the oil storage chamber; In cooperation with the support rod, when the handle is close to the shaft body, the sealing seat covers the overflow hole, and when the handle is away from the shaft body, a flow gap is formed between the sealing seat and the overflow hole; The sealing seat is evenly distributed with through holes.

2. The universal joint cross shaft that is easy to lubricate according to claim 1, characterized in that: A notch is provided on the end surface of the journal, and an oil guide groove is provided on the outer periphery of the journal; One end of the notch is in communication with the overflow hole, and the other end is in communication with the oil guide groove; A plurality of the notches and the oil guide grooves are provided and are evenly distributed along the circumferential direction of the journal.

3. The universal joint cross shaft that is easy to lubricate according to claim 1, characterized in that: The telescopic oil injection assembly further comprises an elastic member, one end of which is connected to the top of the oil storage chamber, and the other end of which is connected to the sealing seat; Through the cooperation between the elastic member and the support rod, the telescopic oil injection assembly has a sealing state and an oil injection state; When in the sealing state, the elastic member does not undergo elastic deformation, and the support rod drives the handle portion to approach the shaft body, so that the outer periphery of the sealing seat covers the overflow hole; When the oil is injected, the support rod drives the handle away from the shaft body, and the elastic member is compressed, so that the outer periphery of the sealing seat is away from the overflow hole.

4. The universal joint cross shaft that is easy to lubricate according to claim 1, characterized in that: A sealing sleeve is provided at the outer bottom of the shaft neck, the sealing sleeve is located at the connection between the shaft neck and the shaft body, and a sealing ring is provided at the outer bottom of the shaft sleeve; When the shaft sleeve is installed on the shaft neck, the sealing ring is embedded in the sealing sleeve.

5. The universal joint cross shaft that is easy to lubricate according to claim 1, characterized in that: The top ring in the sleeve is provided with an inclined end portion and a flow guide area is formed in the sleeve; When the shaft sleeve is mounted on the shaft journal, the top of the shaft journal is located in the flow guide area.

6. The universal joint cross shaft that is easy to lubricate according to claim 1, characterized in that: The shaft body is further provided with a liquid inlet hole, and the liquid inlet hole is located on one side of the opening; A liquid inlet interface is installed on the liquid inlet hole.

7. The universal joint cross shaft that is easy to lubricate according to claim 6, characterized in that: A thread groove is provided in the liquid inlet hole, and a convex thread matching the thread groove is provided at the bottom of the liquid inlet interface; The liquid inlet interface is threadedly connected to the liquid inlet hole through the cooperation of the thread groove and the convex thread.

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