Automobile transmission shaft bushing assembly

Abstract

The invention discloses an automobile transmission shaft bushing assembly, which belongs to the technical field of mechanical transmission and comprises a shaft rod, a shaft sleeve is movably mounted on the outer surface of the shaft rod, universal joints are fixedly mounted at the end part of the shaft sleeve and one end of the shaft rod, and a bushing I is mounted on the outer surface of the shaft rod. A shaft rod is arranged and can generate vibration during working, the shaft rod can extrude the tail end of a toothed rod when vibrating, the end of the toothed rod is extruded, and a first rotating ring and a second rotating ring can be driven to rotate through cooperation of a half gear, a rotating shaft, a gear and a tooth groove; when the first rotating ring and the second rotating ring rotate, the first oil sealing ring and the second oil sealing ring can be extruded through the ejector block, the extrusion block, the first extrusion frame and the second extrusion frame, the first oil sealing ring and the second oil sealing ring can be tightly attached to the surfaces of the shaft rod and the sliding rail when being extruded, lubricating oil can be sealed in the shaft sleeve conveniently when the shaft rod stretches out and draws back, and loss of the lubricating oil is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical transmission, in particular to an automobile transmission shaft bushing assembly. Background Art

[0002] The transmission shaft is the shaft that can transmit power in the transmission shaft of the universal transmission device. It is a high-speed, less-supported rotating body, so its dynamic balance is crucial. Generally, the transmission shaft must undergo a dynamic balance test before leaving the factory and be adjusted on a balancing machine. For front-engine rear-wheel drive vehicles, it is the shaft that transmits the rotation of the transmission to the main reducer. It can have several sections, and the sections can be connected by universal joints. When the transmission shaft is in use, a shaft bushing is used to seal it.

[0003] The existing patent number CN113803361B discloses a new energy vehicle enhanced transmission shaft, which relates to the technical field of new energy vehicle accessories, and in particular to a new energy vehicle enhanced transmission shaft. The new energy vehicle enhanced transmission shaft includes a sleeve, on which a universal joint A is installed; a shaft, one end of which is movably connected to the sleeve, and the other end of which is provided with an integrally formed shaft head, on which a universal joint B is fixedly installed; one end of the sleeve is provided with a torque reduction structure that can offset part of the torque force transmitted by the shaft, and the other end of the sleeve is provided with an amplitude reduction structure that reduces the amplitude of the transmission shaft. Compared with the traditional shaft-to-sleeve transmission, the enhanced drive shaft for new energy vehicles provided by the invention reduces the problem of the drive shaft being twisted off or damaged due to excessive instantaneous torque during torque transmission between the shaft and the sleeve. However, the shaft and the sleeve will drive the internal lubricating oil to move when they are extended or retracted, and the lubricating oil inside the sleeve will gradually be removed during long-term use of the drive shaft. The removal of a large amount of lubricating oil will accelerate the wear of components, and the elastic hose is embedded in the interior of the fitting groove through a sealing sleeve, which will affect the sealing of the elastic hose. Summary of the invention

[0004] The purpose of the present invention is to provide an automobile transmission shaft bushing assembly to solve the problem that the application scope of the current automobile transmission shaft bushing assembly itself is limited as mentioned in the above background technology.

[0005] In order to achieve the above-mentioned invention object, the present invention adopts the following technical scheme: The present invention provides an automobile transmission shaft bushing assembly, comprising a shaft rod, a shaft sleeve movably mounted on the outer surface of the shaft rod, a universal joint fixedly mounted on the end of the shaft sleeve and one end of the shaft rod, and a bushing mounted on the outer surface of the shaft rod. The shaft sleeve also includes a track groove formed in an annular array on the inner wall of the shaft sleeve, and an oil seal cover fixedly mounted on the end of the shaft sleeve by bolts, two mounting blocks are mounted on the outer surface of the oil seal cover, a swivel ring is rotatably connected inside the oil seal cover, an oil seal ring is movably mounted inside the oil seal cover, the swivel ring can squeeze the inner side of the oil seal ring by rotating, the oil seal ring can be tightly attached to the surface of the shaft rod when squeezed, and the oil seal ring can seal the lubricating oil inside the shaft sleeve when the shaft rod is extended and retracted; The track groove further comprises a second arc-shaped slide groove symmetrically arranged inside the track groove, and an oil cavity arranged inside the second arc-shaped slide groove at an equal distance, a support frame is movably installed inside the oil cavity, and a steel ball is movably installed at the end of the support frame, and when the steel ball is squeezed, the lubricating oil inside the oil cavity can be squeezed to the surface of the steel ball through the support frame for lubrication and cooling; The bushing 1 also includes a bellows fixedly mounted on the end of the bushing 1, and a bushing 2 is fixedly mounted on the end of the bellows away from the bushing 1, and the bushing 2 is fixedly mounted on the surface of the shaft sleeve.

[0006] Preferably, the shaft rod also includes a plurality of groups of slide rails fixedly mounted on the outer surface of the shaft rod in a circular array, the plurality of groups of slide rails are movably connected one-to-one inside the track groove, and the surface of the slide rails is symmetrically provided with arc-shaped slide grooves.

[0007] Preferably, a mounting cavity is provided at the end of the support frame, a groove is provided at the top of the support frame, the groove and the mounting cavity are connected via a through hole, one end of a spring 1 is fixedly connected to the inner top of the mounting cavity, the other end of the spring 1 is fixedly connected to the bottom of the oil cavity, and a steel ball is movably connected inside the groove.

[0008] Preferably, the oil sealing cover also includes a movable groove penetrating through the surface of the oil sealing cover, the movable groove is sleeved on the side of the shaft rod and the slide rail, the inner wall of the movable groove is provided with an oil sealing cavity, and a partition is fixedly installed on the inner wall of the oil sealing cavity.

[0009] Preferably, the mounting block also includes an operating groove opened on the surface of the mounting block, a rotation groove is opened on the inner wall of the operating groove, a plurality of collection grooves are opened on the inner wall of the rotation groove in a circular array, a clamping block is rotatably installed inside the collection groove through an elastic member, and a rotating shaft is rotatably installed inside the rotation groove.

[0010] Preferably, the outer surface of the rotating shaft near the block is provided with a plurality of groups of slots in a circular array, the slots correspond to the blocks one by one, a half gear is fixedly mounted on the outer surface of the rotating shaft, a gear rod is movably mounted on the bottom of the collection groove through an assembly groove, and the end of the gear rod is in close contact with the outer surface of the shaft rod.

[0011] Preferably, an extrusion groove is penetrated through the surface of the gear rod, an extrusion plate is movably connected inside the extrusion groove, two ends of a spring 2 are fixedly mounted on the bottom of the extrusion plate and the bottom of the extrusion groove, one end of the extrusion plate is fixedly connected to the inner wall of the collection groove, and one end of the rotating shaft away from the rotating groove penetrates the surface of the oil sealing cover and is connected to the inside of the oil sealing chamber and is fixedly connected to the gear.

[0012] Preferably, the swivel one also includes a swivel two fixedly mounted on the inner side of the swivel one, the swivel one and the swivel two are rotatably connected inside the oil sealing chamber, the swivel two is located at the lower part of the partition, the swivel one is located at the upper part of the partition, the surfaces of the swivel one and the swivel two are provided with tooth grooves matching the gears, and a row of top blocks are fixedly mounted on the inner sides of the swivel one and the swivel two in a circular array, a number of top blocks are provided in each row, and the two rows of top blocks are arranged alternately.

[0013] Preferably, a square guide rod is fixedly mounted on the inner wall of the oil sealing chamber, an extrusion block is movably mounted on the outer surface of the square guide rod, the extrusion block is located on the side of the top block, the spacing between every two top blocks is slightly larger than the width of the extrusion block, a columnar guide rod is fixedly mounted on the inner wall of the oil sealing chamber, a moving block is movably mounted on the outer surface of the columnar guide rod, an extrusion frame 1 is fixedly mounted on the moving block, and extrusion frames 2 are fixedly mounted on both sides of the extrusion frame 1.

[0014] Preferably, the oil sealing ring 1 also includes an oil sealing ring 2 arranged on the side of the oil sealing ring 1, and the oil sealing ring 1 and the oil sealing ring 2 are movably connected inside the oil sealing cavity, and the inner sides of the oil sealing ring 1 and the oil sealing ring 2 are provided with oil sealing grooves in the form of a ring array, and the vertical cross-section of the oil sealing groove is consistent with the vertical cross-section size of the slide rail, and the oil sealing ring 1, the oil sealing ring 2 and the inner sides of the oil sealing groove are provided with oil sealing inclined surfaces, and the outer surfaces of the oil sealing ring 1 and the oil sealing ring 2 close to the extrusion frame 1 and the extrusion frame 2 are provided with pressing grooves.

[0015] Compared with the prior art, one or more of the above technical solutions have the following beneficial effects: 1. A shaft is provided which will vibrate when working, and the end of the gear rod will be squeezed when the shaft vibrates. The end of the gear rod can be squeezed to drive the swivel ring 1 and the swivel ring 2 to rotate through the cooperation of the half gear, the rotating shaft, the gear and the tooth groove. When the swivel ring 1 and the swivel ring 2 rotate, the oil sealing ring 1 and the oil sealing ring 2 can be squeezed through the top block, the squeezing block, the squeezing frame 1 and the squeezing frame 2. When the oil sealing ring 1 and the oil sealing ring 2 are squeezed, they can be tightly attached to the surface of the shaft rod and the slide rail, so that the lubricating oil can be sealed inside the shaft sleeve when the shaft rod is extended and retracted, thereby reducing the loss of the lubricating oil; 2. A top block is provided which can squeeze the inclined surface of the squeezing block by its own inclined surface when rotating. When the squeezing block is squeezed, it can squeeze the squeezing frame 1 and the squeezing frame 2. When the squeezing frame 1 is squeezed, it can squeeze the middle position of the inner side of the pressing groove so that the oil sealing ring is tightly attached to the surface of the shaft rod, and the squeezing frame 2 will squeeze the corner position of the pressing groove so that the oil sealing ring is squeezed and tightly attached to the corner position of the shaft rod and the slide rail, and when the corner position of the pressing groove is squeezed, it can drive the top of the oil sealing groove to squeeze and tightly attach to the top of the slide rail, so that the oil sealing ring can be tightly sealed at the angle between the shaft rod and the slide rail when in use; 3. The swivel ring 1 and the swivel ring 2 are provided so that they can alternately squeeze the oil sealing ring 1 and the oil sealing ring 2 through the top block when rotating. When the oil sealing rings are tightly sealed to the shaft rod and the slide rail, the oil sealing ring 2 will be loosened, and when the oil sealing rings are tightly sealed to the shaft rod and the slide rail, the oil sealing ring 1 will be loosened. When the oil sealing rings 2 and 1 are alternately moved, the oil sealing inclined surfaces can be matched to avoid oil leakage, so that the oil sealing rings can be prevented from becoming weak during long-term use. 4. When the shaft is rotated, the slide rail can be driven to rotate slightly in the track groove. When the slide rail rotates, the steel balls can be squeezed. When the steel balls are squeezed, the support frame can be squeezed. When the support frame is squeezed, the spring 1 can be squeezed. When the support frame and the spring 1 are squeezed, the lubricating oil inside the oil chamber can be squeezed to the surface of the steel balls for sufficient lubrication and cooling, so that the slide rail and the steel balls can be lubricated and cooled while cooperating to reduce the torque. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of a partially enlarged structure of the present invention; Figure 3 It is a front cross-sectional structural schematic diagram of the present invention; Figure 4 It is a schematic diagram of a three-dimensional partial cross-sectional structure of the present invention; Figure 5 This is a schematic diagram of the explosion structure of the oil sealing cover of the present invention; Figure 6 It is a schematic diagram of the side view structure of the swivel first and the swivel second of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the oil sealing cover of the present invention; Figure 8 It is a cross-sectional structural diagram of the mounting block of the present invention from a viewing angle; Fig. 9This is a schematic diagram of the cross-sectional structure of the mounting block of the present invention from a second viewing angle; Fig.10 It is a schematic diagram of the structure of the mounting block of the present invention from three perspectives; Fig.11 The present invention Figure 4 A schematic diagram of the enlarged structure of part A; Fig.12 The present invention Figure 3 A schematic diagram of the enlarged structure of part B; Fig.13 The present invention Figure 8 A schematic diagram of the enlarged structure of part C; Fig.14 The present invention Figure 6 A schematic diagram of the enlarged structure of the D section; Fig.15 The present invention Figure 7 A schematic diagram of the enlarged structure of part E; In the figure: 100, shaft; 110, slide rail; 111, arc slide groove 1; 200, shaft sleeve; 210, track groove; 211, arc slide groove 2; 212, oil chamber; 213, spring 1; 214, mounting chamber; 215, support frame; 216, groove; 217, steel ball; 220, oil seal cover; 221, oil seal chamber; 222, partition; 223, moving groove; 230, mounting block; 231, operating groove; 232, rotating groove; 233, collection groove; 234, clamping block; 235, rotating shaft; 236, clamping groove; 237, half gear; 238, gear Rod; 239, extrusion groove; 2310, extrusion plate; 2311, spring 2; 2312, gear; 240, swivel 1; 241, swivel 2; 242, tooth groove; 243, square guide rod; 244, extrusion block; 245, cylindrical guide rod; 246, moving block; 247, extrusion frame 1; 248, extrusion frame 2; 249, top block; 250, oil seal ring 1; 251, oil seal ring 2; 252, oil seal groove; 253, oil seal slope; 254, pressing groove; 300, universal joint; 400, bushing 1; 410, bellows; 420, bushing 2. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0019] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0020] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0021] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0022] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] See also Figure 1-Figure 4 The present invention provides an embodiment: an automobile transmission shaft bushing assembly, including a shaft rod 100, a shaft sleeve 200 is movably installed on the outer surface of the shaft rod 100, a universal joint 300 is fixedly installed between the end of the shaft sleeve 200 and one end of the shaft rod 100, a bushing 400 is installed on the outer surface of the shaft rod 100, the bushing 400 also includes a bellows 410 fixedly installed on the end of the bushing 400, a bushing 2 420 is fixedly installed on the end of the bellows 410 away from the bushing 400, and the bushing 2 420 is fixedly installed on the surface of the sleeve 200.

[0024] It should be understood that the operation of the automobile engine will drive the universal joint 300 to rotate. When the universal joint 300 rotates, it can drive the shaft 100 and the sleeve 200 to rotate. When the sleeve 200 rotates, it can drive another set of universal joints 300 to rotate. When the other set of universal joints 300 rotates, the wheels can rotate. At the same time, when the wheels turn or the car bumps, it will drive the shaft 100 and the sleeve 200 to expand and contract. When the shaft 100 and the sleeve 200 expand and contract, it can drive the bushing 1 400, the bellows 410 and the bushing 2 420 to expand and contract.

[0025] like Figure 1-Figure 4 , Fig.11 and Fig.12 As shown, the sleeve 200 also includes a track groove 210 opened in the inner wall of the sleeve 200 in a circular array, and the track groove 210 also includes an arc-shaped slide groove 211 symmetrically opened on the inner side of the track groove 210, and an oil cavity 212 opened in the arc-shaped slide groove 211 at an equal distance. A support frame 215 is movably installed inside the oil cavity 212, and a steel ball 217 is movably installed at the end of the support frame 215. When the steel ball 217 is squeezed, the lubricating oil inside the oil cavity 212 can be squeezed to the surface of the steel ball 217 through the support frame 215 for lubrication and cooling. The end of the support frame 215 is provided with a mounting cavity 214, a groove 216 is provided at the top of the support frame 215, and the groove 216 is connected to the installation cavity 214 through a through hole. One end of a spring 213 is fixedly connected to the inner top of the installation cavity 214, and the other end of the spring 213 is fixedly connected to the bottom of the oil cavity 212. A steel ball 217 is movably connected inside the groove 216. The shaft 100 also includes a plurality of groups of slide rails 110 fixedly installed on the outer surface of the shaft 100 in a circular array. The plurality of groups of slide rails 110 are movably connected to the inside of the track groove 210 in a one-to-one manner, and the surface of the slide rails 110 is symmetrically provided with arc-shaped slide grooves 111.

[0026] It is worth noting that when the shaft 100 rotates, it can drive the slide rail 110 to rotate slightly in the track groove 210. When the slide rail 110 rotates, it can drive the arc-shaped slide groove 111 to squeeze the surface of the steel ball 217. When the steel ball 217 is squeezed, it can slide slightly inside the arc-shaped slide groove 211. When the steel ball 217 slides, it can squeeze the support frame 215 through the groove 216. When the support frame 215 is squeezed, it can slide in the oil chamber 212. When the support frame 215 slides, it can squeeze the spring 1 213 through the installation chamber 214. When the support frame 215 and the spring 1 213 are squeezed, the lubricating oil inside the oil chamber 212 can be squeezed out through the gap between the oil chamber 212 and the support frame 215. At the same time, the lubricating oil will also be squeezed to the surface of the steel ball 217 through the installation chamber 214 and the groove 216 for sufficient lubrication and cooling.

[0027] like Figure 2 , Figure 3 , Figure 5 , Figure 7 , Fig.11 , Fig.12 and Fig.15 As shown, an oil sealing cover 220 is fixedly installed on the end of the sleeve 200 by bolts, and the oil sealing cover 220 also includes a movable groove 223 that penetrates and is opened on the surface of the oil sealing cover 220. The movable groove 223 is sleeved on the side of the shaft rod 100 and the slide rail 110. The inner wall of the movable groove 223 is provided with an oil sealing cavity 221, and a partition plate 222 is fixedly installed on the inner wall of the oil sealing cavity 221.

[0028] like Figure 5 , Figure 7-Figure 11 , Fig.13 As shown, two mounting blocks 230 are installed on the outer surface of the oil sealing cover 220, and the mounting block 230 also includes an operating groove 231 opened on the surface of the mounting block 230, a rotating groove 232 is opened on the inner wall of the operating groove 231, and a plurality of collection grooves 233 are opened on the inner wall of the rotating groove 232 in the form of a ring array, and a clamping block 234 is rotatably installed inside the collection groove 233 through an elastic member, and a rotating shaft 235 is rotatably installed inside the rotating groove 232, and a plurality of groups of clamping grooves 236 are opened on the outer surface of the rotating shaft 235 near the clamping block 234 in the form of a ring array, and the clamping grooves 236 correspond to the clamping blocks 234 one by one, and the outer surface of the rotating shaft 235 is fixedly installed A half gear 237 is installed, and a gear rod 238 is movably installed at the bottom of the collection groove 233 through an assembly groove. The end of the gear rod 238 is in close contact with the outer surface of the shaft rod 100, and an extrusion groove 239 is penetrated through the surface of the gear rod 238. An extrusion plate 2310 is movably connected inside the extrusion groove 239. The bottom of the extrusion plate 2310 and the bottom of the extrusion groove 239 are fixedly installed with two ends of a spring 2311. One end of the extrusion plate 2310 is fixedly connected to the inner wall of the collection groove 233. The end of the rotating shaft 235 away from the rotating groove 232 penetrates the surface of the oil sealing cover 220 and is connected to the inside of the oil sealing chamber 221 and is fixedly connected to the gear 2312.

[0029] It should be understood that the shaft 100 and the slide rail 110 will vibrate when working. When the shaft 100 and the slide rail 110 vibrate, the end of the gear rod 238 can be squeezed. When the gear rod 238 is squeezed, it can slide in the operating groove 231. When the gear rod 238 slides, it can drive the extrusion groove 239 to slide on the surface of the extrusion plate 2310. When the extrusion groove 239 slides, it can squeeze the spring 2311. When the gear rod 238 slides, it can drive the half gear 237 to mesh and rotate. When the half gear 237 meshes and rotates, it can drive the rotating shaft 235 to rotate counterclockwise inside the oil sealing cover 220 and the rotating groove 232. When the rotating shaft 235 rotates counterclockwise, it can drive the card slot 236 to squeeze the inclined surface of the card block 234. When the card block 234 is squeezed, it can rotate inside the collection groove 233. When the other set of card slots 236 rotates to the side of the card block 234, it can be reset and engaged through the elastic member. When the block 234 is engaged with the slot 236, the rotating shaft 235 can be prevented from rotating clockwise. The rotating shaft 235 can drive the gear 2312 to rotate while the rotating shaft 235 rotates. When the gear 2312 rotates, the rotating ring 1 240 can be driven to rotate through the tooth groove 242. When the half gear 237 rotates to 180°, it will disengage from the gear rod 238. At this time, the gear rod 238 can be reset by the elastic force of the spring 2311 itself. When the gear rod 238 is reset, the other group of half gears 237 will contact the other group of gear rods 238. At the same time, the other group of gear rods 238 will be vibrated to drive the other group of half gears 237 to mesh and rotate. When the other group of half gears 237 rotates, the rotating ring 2 241 can be driven to rotate through the work of the parts. The alternating work of the two groups of half gears 237 and the two groups of gear rods 238 can make the oil seal ring 1 250 and the oil seal ring 2 251 alternately seal the shaft 100 and the slide rail 110.

[0030] like Figure 2 , Figure 5-Figure 7 , Fig.12 , Fig.14 and Fig.15As shown, the oil sealing cover 220 is rotatably connected with a swivel 1 240 inside, and the swivel 1 240 also includes a swivel 241 fixedly installed on the inner side of the swivel 1 240. The swivel 1 240 and the swivel 241 are rotatably connected inside the oil sealing chamber 221. The swivel 241 is located at the lower part of the partition 222, and the swivel 1 is located at the upper part of the partition 222. The surfaces of the swivel 1 240 and the swivel 241 are both provided with tooth grooves 242 matching the gear 2312. The inner sides of the swivel 1 240 and the swivel 241 are each fixedly installed with a row of top blocks 249 in a circular array, and each row of top blocks 249 is provided with a plurality of The two rows of top blocks 249 are arranged in a staggered manner, a square guide rod 243 is fixedly mounted on the inner wall of the oil sealing chamber 221, an extrusion block 244 is movably mounted on the outer surface of the square guide rod 243, the extrusion block 244 is located on the side of the top block 249, and the distance between every two top blocks 249 is slightly larger than the width of the extrusion block 244, a columnar guide rod 245 is fixedly mounted on the inner wall of the oil sealing chamber 221, a moving block 246 is movably mounted on the outer surface of the columnar guide rod 245, an extrusion frame 247 is fixedly mounted on the moving block 246, and extrusion frames 248 are fixedly mounted on both sides of the extrusion frame 247.

[0031] It should be known that when the gear 2312 rotates, it can drive the swivel 1 240 or the swivel 241 to rotate through the tooth groove 242. When the swivel 1 240 and the swivel 241 rotate, they can drive the top block 249 to rotate. When the top block 249 rotates, it can squeeze the inclined surface of the squeezing block 244 through its own inclined surface. When the squeezing block 244 is squeezed, it can slide on the surface of the square guide rod 243. When the squeezing block 244 slides, it can squeeze the squeezing frame 1 247 and the squeezing frame 2 248. When the squeezing frame 1 247 is squeezed, it can drive the moving block 246 to move. When the moving block 246 moves, it slides on the cylindrical guide rod 245. When the pressing frame 247 is squeezed, the middle position of the inner side of the pressing groove 254 can be squeezed to make the oil sealing ring tightly attached to the surface of the shaft 100, and the pressing frame 248 will squeeze the corner position of the pressing groove 254 to make the oil sealing ring tightly attached to the corner position of the shaft 100 and the slide rail 110, and when the corner position of the pressing groove 254 is squeezed, the top of the oil sealing groove 252 can be driven to squeeze and fit the top of the slide rail 110, so that the oil sealing ring 1 250 and the oil sealing ring 2 251 can not only seal the shaft 100 but also seal the slide rail 110, and the corner position between the slide rail 110 and the shaft 100 can be sealed.

[0032] like Figure 2 , Figure 5 , Figure 7 , Fig.12 , Fig.14 and Fig.15As shown, an oil sealing ring 250 is movably installed inside the oil sealing cover 220, and the oil sealing ring 250 also includes an oil sealing ring 251 arranged on the side of the oil sealing ring 250. The oil sealing ring 250 and the oil sealing ring 251 are movably connected inside the oil sealing cavity 221, and the inner sides of the oil sealing ring 250 and the oil sealing ring 251 are provided with oil sealing grooves 252 in the form of a ring array. The vertical section of the oil sealing groove 252 is consistent with the vertical section size of the slide rail 110, and the inner sides of the oil sealing ring 250, the oil sealing ring 251 and the oil sealing groove 252 are provided with oil sealing inclined surfaces 253, and the outer surfaces of the oil sealing ring 250 and the oil sealing ring 251 near the extrusion frame 1 247 and the extrusion frame 248 are provided with pressing grooves 254.

[0033] It should be noted that there is an angle between the oil sealing slope 253 and the shaft 100 and the slide rail 110, and the two sets of oil sealing slopes 253 are mirror-arranged on the shaft 100, so that when the oil sealing ring 1 250 and the oil sealing ring 2 251 are used alternately, the lubricating oil can always be stored inside the sleeve 200 through the angle formed by the oil sealing slope 253 and the shaft 100.

[0034] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automobile transmission shaft bushing assembly, comprising a shaft rod (100), a shaft sleeve (200) movably mounted on the outer surface of the shaft rod (100), a universal joint (300) fixedly mounted on the end of the shaft sleeve (200) and one end of the shaft rod (100), and a bushing 1 (400) mounted on the outer surface of the shaft rod (100), characterized in that: The shaft sleeve (200) further comprises a track groove (210) formed in an annular array on the inner wall of the shaft sleeve (200), and an oil seal cover (220) fixedly mounted on the end of the shaft sleeve (200) by means of bolts, two mounting blocks (230) being mounted on the outer surface of the oil seal cover (220), a rotating ring (240) being rotatably connected to the inside of the oil seal cover (220), an oil seal ring (250) being movably mounted inside the oil seal cover (220), the rotating ring (240) being capable of squeezing the inner side of the oil seal ring (250) by rotating, the oil seal ring (250) being capable of being tightly attached to the surface of the shaft rod (100) when being squeezed, and the oil seal ring (250) being capable of sealing the lubricating oil inside the shaft sleeve (200) when the shaft rod (100) is extended or retracted; The track groove (210) further comprises a second arc-shaped slide groove (211) symmetrically arranged inside the track groove (210), and an oil chamber (212) arranged at an equal distance inside the second arc-shaped slide groove (211), a support frame (215) being movably installed inside the oil chamber (212), and a steel ball (217) being movably installed at the end of the support frame (215), and when the steel ball (217) is squeezed, the lubricating oil inside the oil chamber (212) can be squeezed to the surface of the steel ball (217) through the support frame (215) for lubrication and cooling; The bushing one (400) further comprises a bellows (410) fixedly mounted on the end of the bushing one (400), and a bushing two (420) is fixedly mounted on the end of the bellows (410) away from the bushing one (400), and the bushing two (420) is fixedly mounted on the surface of the shaft sleeve (200).

2. The automotive transmission shaft bushing assembly according to claim 1, characterized in that: The shaft rod (100) further comprises a plurality of groups of slide rails (110) fixedly mounted on the outer surface of the shaft rod (100) in a circular array, the plurality of groups of slide rails (110) being movably connected one-to-one to the inside of the track groove (210), and the surfaces of the slide rails (110) are symmetrically provided with arc-shaped slide grooves 1 (111).

3. The automotive transmission shaft bushing assembly according to claim 1, characterized in that: A mounting cavity (214) is provided at the end of the support frame (215), a groove (216) is provided at the top of the support frame (215), the groove (216) and the mounting cavity (214) are connected via a through hole, one end of a spring (213) is fixedly connected to the top of the inner side of the mounting cavity (214), the other end of the spring (213) is fixedly connected to the bottom of the oil cavity (212), and a steel ball (217) is movably connected inside the groove (216).

4. The automotive transmission shaft bushing assembly according to claim 1, characterized in that: The oil sealing cover (220) further comprises a movable groove (223) extending through the surface of the oil sealing cover (220), the movable groove (223) being sleeved on the side surfaces of the shaft (100) and the slide rail (110), an oil sealing cavity (221) being formed on the inner wall of the movable groove (223), and a partition plate (222) being fixedly mounted on the inner wall of the oil sealing cavity (221).

5. The automotive transmission shaft bushing assembly according to claim 4, characterized in that: The mounting block (230) further comprises an operating groove (231) provided on the surface of the mounting block (230), a rotating groove (232) being provided on the inner wall of the operating groove (231), a plurality of collection grooves (233) being provided on the inner wall of the rotating groove (232) in a circular array, a clamping block (234) being rotatably mounted inside the collection groove (233) via an elastic member, and a rotating shaft (235) being rotatably mounted inside the rotating groove (232).

6. The automotive transmission shaft bushing assembly according to claim 5, characterized in that: The outer surface of the rotating shaft (235) close to the clamping block (234) is provided with a plurality of groups of clamping grooves (236) in a circular array, and the clamping grooves (236) correspond to the clamping blocks (234) one by one. A half gear (237) is fixedly mounted on the outer surface of the rotating shaft (235), and a gear rod (238) is movably mounted on the bottom of the collection groove (233) through an assembly groove, and the end of the gear rod (238) is in close contact with the outer surface of the shaft rod (100).

7. The automotive transmission shaft bushing assembly according to claim 6, characterized in that: An extrusion groove (239) is formed through the surface of the gear rod (238), and an extrusion plate (2310) is movably connected inside the extrusion groove (239). Two ends of a second spring (2311) are fixedly mounted on the bottom of the extrusion plate (2310) and the bottom of the extrusion groove (239). One end of the extrusion plate (2310) is fixedly connected to the inner wall of the collection groove (233). One end of the rotating shaft (235) away from the rotating groove (232) passes through the surface of the oil sealing cover (220), is connected to the inside of the oil sealing chamber (221), and is fixedly connected to the gear (2312).

8. The automotive transmission shaft bushing assembly according to claim 1, characterized in that: The swivel one (240) further comprises a swivel two (241) fixedly mounted on the inner side of the swivel one (240); the swivel one (240) and the swivel two (241) are rotatably connected inside the oil sealing chamber (221); the swivel two (241) is located at the lower part of the partition (222); the swivel one (240) is located at the upper part of the partition (222); the surfaces of the swivel one (240) and the swivel two (241) are both provided with tooth grooves (242) matching the gear (2312); a row of top blocks (249) are fixedly mounted on the inner side of the swivel one (240) and the swivel two (241) in a circular array; a plurality of top blocks (249) are provided in each row, and the two rows of top blocks (249) are arranged alternately.

9. The automotive transmission shaft bushing assembly according to claim 8, characterized in that: A square guide rod (243) is fixedly mounted on the inner wall of the oil sealing chamber (221); an extrusion block (244) is movably mounted on the outer surface of the square guide rod (243); the extrusion block (244) is located on the side of the top block (249); the distance between each two top blocks (249) is slightly larger than the width of the extrusion block (244); a columnar guide rod (245) is fixedly mounted on the inner wall of the oil sealing chamber (221); a moving block (246) is movably mounted on the outer surface of the columnar guide rod (245); an extrusion frame 1 (247) is fixedly mounted on the moving block (246); and extrusion frames 2 (248) are fixedly mounted on both sides of the extrusion frame 1 (247).

10. The automotive transmission shaft bushing assembly according to claim 1, characterized in that: The oil sealing ring 1 (250) further comprises an oil sealing ring 2 (251) arranged on the side of the oil sealing ring 1 (250); the oil sealing ring 1 (250) and the oil sealing ring 2 (251) are movably connected inside the oil sealing cavity (221); the inner sides of the oil sealing ring 1 (250) and the oil sealing ring 2 (251) are provided with oil sealing grooves (252) in the form of a ring array; the vertical cross-section of the oil sealing groove (252) matches the vertical cross-section size of the slide rail (110); the inner sides of the oil sealing ring 1 (250), the oil sealing ring 2 (251) and the oil sealing groove (252) are provided with oil sealing inclined surfaces (253); and the outer surfaces of the oil sealing ring 1 (250) and the oil sealing ring 2 (251) close to the extrusion frame 1 (247) and the extrusion frame 2 (248) are provided with pressing grooves (254).

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