Driving shaft sheath

Abstract

The utility model discloses a driving shaft sheath, and particularly relates to the field of sheaths, the driving shaft sheath comprises a sheath body, one side of the inner wall of the sheath body is provided with a first connecting port, the other side of the sheath body is provided with a second connecting port, the first connecting port is communicated with the second connecting port, and the first connecting port is communicated with the second connecting port. A protective device is arranged on the inner wall of the first connecting port, an auxiliary sealing device is arranged on the inner wall of the second connecting port, the protective device comprises a protective ring, a rectangular hole is formed in the arc surface, close to the first connecting port, of the outer surface of the protective sleeve body, and by arranging the protective device, a rubber rectangular block slides on the inner wall of the rectangular hole; the protective ring is fixed to the inner wall of the first connecting opening through the fixing circular ring, so that when the protective sleeve rubs against the driving shaft, friction can be conducted through the protective ring, contact between the protective sleeve and the driving shaft is reduced, the service life of the protective sleeve is prolonged, the protective sleeve is not prone to damage, and normal work of the driving shaft is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sheath, especially to a driving shaft sheath. BACKGROUND

[0002] The automobile driving shaft sheath is also a key component in the sheath product, and mainly functions to prevent dust from entering the sheath and prevent the grease in the sheath from flowing out.

[0003] The patent with the patent publication number CN214888476U discloses a driving shaft sheath assembly of a vehicle and the vehicle. The driving shaft sheath assembly of the vehicle comprises: a driving shaft sheath, an inner surface of the driving shaft sheath is provided with a protection structure; a universal joint shaft sleeve, one end of the driving shaft sheath opposite to the universal joint shaft sleeve is sleeved on the outer side of the universal joint shaft sleeve, and the protection structure is used for preventing the inner surface of the driving shaft sheath from contacting the end of the universal joint shaft sleeve opposite to the driving shaft sheath. Thus, by arranging the protection structure on the inner surface of the driving shaft sheath, the protection structure can prevent the inner surface of the driving shaft sheath from contacting the universal joint shaft sleeve, can prevent stress concentration caused by the contact between the inner surface of the driving shaft sheath and the universal joint shaft sleeve, and thus can avoid damage or breakage of the driving shaft sheath, and further can prevent oil leakage of the driving shaft sheath and can ensure the use reliability of the driving shaft sheath assembly.

[0004] However, in the use process, the inner wall of the first connecting port on the driving shaft sheath is easily scratched by the friction with the driving shaft, which causes the sheath to be damaged, and thus the sheath cannot perform dust prevention work and cannot seal the lubricating oil, so that the driving shaft cannot work normally. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the problem that in the use process, the inner wall of the first connecting port on the driving shaft sheath is easily scratched by the friction with the driving shaft, which causes the sheath to be damaged, and thus the sheath cannot perform dust prevention work and cannot seal the lubricating oil, so that the driving shaft cannot work normally. A driving shaft sheath is provided.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a drive shaft protective sleeve, including the protective sleeve body, the inner wall one side of protective sleeve body is seted with first connecting port, the other side of protective sleeve body is seted with second connecting port, first connecting port and second connecting port are through, the inner wall of first connecting port is provided with protection device, the inner wall of second connecting port is provided with auxiliary sealing device, the protection device includes the protection ring, the outer surface of protective sleeve body is close to the arc surface of first connecting port and is seted with rectangular hole, the inner wall of rectangular hole is inserted and is connected with rubber rectangular block, the protection ring is fixedly connected with rubber rectangular block, the outer surface of rubber rectangular block is seted with the recess on one side, the size and shape of the outer surface arc surface of protection ring and the size and shape of the inner wall of first connecting port are adapted.

[0007] The effect of the above components is that: by setting the protection device and the auxiliary sealing device, the rubber rectangular block slides in the inner wall of the rectangular hole, the protection ring is fixed on the inner wall of the first connecting port by the fixed ring, and when the protective sleeve and the drive shaft rub, the protection ring can rub, reducing the contact between the protective sleeve and the drive shaft, thereby increasing the service life of the protective sleeve, preventing damage, ensuring normal operation of the drive shaft, and adjusting the sealing ring to tightly adhere to the surface of the drive shaft, thereby protecting the grease inside the protective sleeve from flowing out.

[0008] Preferably, the inner wall of the recess is connected with a fixed ring, and the two ends of the fixed ring are fixedly connected with a first connecting block and a second connecting block.

[0009] The effect of the above components is that: by setting the fixed ring and the first connecting block, the fixed ring can be fixed on the protection ring in the inner wall of the recess, thereby driving other components to function.

[0010] Preferably, the outer surface of the first connecting block and the second connecting block is seted with a threaded hole on one side near the top, and the inner wall of the threaded hole is threadedly connected with a bolt.

[0011] The effect of the above components is that: by setting the bolt and the threaded hole, the bolt can rotate in the inner wall of the threaded hole, thereby fixing the first connecting block and the second connecting block.

[0012] Preferably, the outer surface of the second connecting block is provided with a placing groove, one end of the bolt is fixedly connected with a nut, the outer surface of the nut is provided with a cross-shaped groove, and the outer surface of the bolt is threadedly connected with a nut.

[0013] The above components achieve the effects that: the nut can rotate in the inner wall of the placing groove, and the nut can be hidden in the inner wall of the placing groove, thereby protecting the nut.

[0014] Preferably, the auxiliary sealing device comprises a third connecting block and a sealing ring, the inner wall of the third connecting block is provided with a first sliding groove, the inner wall of the first sliding groove is slidably connected with a concave-shaped sliding block, and the third connecting block is fixedly connected with the sheath body.

[0015] The above components achieve the effects that: the concave-shaped sliding block can slide in the inner wall of the first sliding groove, thereby driving the sealing ring to move.

[0016] Preferably, the outer surface of the third connecting block is provided with a second sliding groove, the inner wall of the second sliding groove is slidably connected with an L-shaped sliding rod, the outer surface of the concave-shaped sliding block is provided with a clamping groove, and the inner wall of the clamping groove is matched with the outer surface of the L-shaped sliding rod in size and shape.

[0017] The above components achieve the effects that: the L-shaped sliding rod can slide in the inner wall of the second sliding groove, thereby enabling the L-shaped sliding rod to be clamped into the inner wall of the clamping groove.

[0018] Preferably, the outer surface of the sealing ring is provided with a limiting groove, the limiting groove is insertedly connected with the concave-shaped sliding block, and the outer surface of the sealing ring is matched with the inner wall of the second connecting port in size and shape.

[0019] The above components achieve the effects that: the concave-shaped sliding block can slide in the inner wall of the limiting groove, thereby enabling the sealing ring to move.

[0020] In summary, the utility model has the beneficial effects that:

[0021] 1. By setting the protection device, the rubber rectangular block can slide in the inner wall of the rectangular hole, the protection ring is fixed in the inner wall of the first connecting port through the fixed ring, and when the sheath and the driving shaft rub, the protection ring can be rubbed, the contact between the sheath and the driving shaft is reduced, the service life of the sheath is increased, the sheath is not easy to be damaged, and the driving shaft can work normally.

[0022] 2、By setting auxiliary sealing device, make the concave slider in the first sliding groove wall sliding, through L type slide rod fixed, further make the sealing ring under the influence of long time use and thermal expansion and contraction, easy to produce loose condition, can be adjusted, make the sealing ring can tightly adhere to the surface of the drive shaft, further can protect the grease inside the sheath not easily flow out. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0024] Figure 2 It is the three-dimensional structure schematic diagram of the utility model sheath body;

[0025] Figure 3 It is the three-dimensional structure schematic diagram of the utility model protection ring;

[0026] Figure 4 It is the three-dimensional structure schematic diagram of the utility model fixed ring;

[0027] Figure 5 It is the three-dimensional structure schematic diagram of the utility model Figure 4 It is the three-dimensional structure schematic diagram of the utility model

[0028] Figure 6 It is the three-dimensional structure schematic diagram of the utility model auxiliary sealing device;

[0029] Legend: 1, sheath body; 2, first connecting port; 3, second connecting port; 4, protection device; 41, rectangular hole; 42, rubber rectangular block; 43, protection ring; 44, sealing frame; 45, recess; 46, fixed ring; 47, first connecting block; 48, second connecting block; 49, threaded hole; 410, bolt; 411, placing groove; 412, nut; 413, cross type groove; 414, nut; 5, auxiliary sealing device; 51, third connecting block; 52, first sliding groove; 53, concave slider; 54, second sliding groove; 55, L type slide rod; 56, clamping groove; 57, sealing ring; 58, limiting groove. DETAILED DESCRIPTION

[0030] Reference Figure 1The utility model provides a kind of technical scheme shown in the utility model: a drive shaft sheath, a drive shaft sheath, including sheath body 1, the inner wall of sheath body 1 side is equipped with first connecting port 2, the other side of sheath body 1 is equipped with second connecting port 3, first connecting port 2 and second connecting port 3 are through, the inner wall of first connecting port 2 is provided with protection device 4, the inner wall of second connecting port 3 is provided with auxiliary sealing device 5, by being equipped with protection device 4 and auxiliary sealing device 5, so that rubber rectangular block 42 is slid in the inner wall of rectangular hole 41, by fixed ring 46, so that protective ring 43 is fixed in the inner wall of first connecting port 2, further so that sheath body 1 and drive shaft rub, can rub by protective ring 43, reduce the contact of sheath body 1 and drive shaft, further so that the service life of sheath body 1 increases, not easy to damage, guarantee drive shaft normal work, by being equipped with auxiliary sealing device 5, so that concave slide block 53 is slid in the inner wall of first sliding slot 52, by L type slide bar 55, further so that sealing ring 57 is under the influence of long time use and thermal expansion and contraction, easy to produce loosening condition, can be adjusted, so that sealing ring 57 can be tightly attached to the surface of drive shaft, further can protect the butter inside sheath body 1 not easily flow out.

[0031] Specifically, the protection device 4 and the auxiliary sealing device 5 are set and function.

[0032] Example one: refer to Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, in the embodiment: the outer surface of the sheath body 1 is provided with a rectangular hole 41 near the circular arc surface of the first connecting port 2, the inner wall of the rectangular hole 41 is provided with a rubber rectangular block 42, a protective ring 43 is fixedly connected with the rubber rectangular block 42, a sealing frame 44 is sleeved on the outer surface of the rubber rectangular block 42, a groove 45 is formed on one side of the outer surface of the rubber rectangular block 42, and the outer surface circular arc surface of the protective ring 43 is matched with the size and shape of the inner wall of the first connecting port 2. The inner wall of the groove 45 is provided with a fixed circular ring 46, and the two ends of the fixed circular ring 46 are fixedly connected with a first connecting block 47 and a second connecting block 48. By arranging the fixed circular ring 46 and the first connecting block 47, the fixed circular ring 46 can be fixed on the inner wall of the groove 45 to fix the protective ring 43, so that other components can be driven to play a role. Threaded holes 49 are formed on one side of the outer surface of the first connecting block 47 and the second connecting block 48 near the top, and the inner wall of the threaded hole 49 is threadedly connected with a bolt 410. By arranging the bolt 410 and the threaded hole 49, the bolt 410 can rotate in the inner wall of the threaded hole 49, so that the first connecting block 47 and the second connecting block 48 are fixed. A placing groove 411 is formed on one side of the outer surface of the second connecting block 48, one end of the bolt 410 is fixedly connected with a nut 412, one side of the outer surface of the nut 412 is provided with a cross-shaped groove 413, the outer surface circular arc surface of the bolt 410 is threadedly connected with a nut 414, and the size and shape of the outer surface of the nut 412 are matched with the size and shape of the inner wall of the placing groove 411. By arranging the placing groove 411 and the nut 412, the nut 412 can rotate in the inner wall of the placing groove 411, so that the nut 412 can be hidden in the inner wall of the placing groove 411 to protect the nut 412.

[0033] Example two: refer to Figure 6As shown, in the present embodiment: the auxiliary sealing device 5 comprises a third connecting block 51 and a sealing ring 57, the inner wall of the third connecting block 51 is provided with a first sliding groove 52, the inner wall of the first sliding groove 52 is slidably connected with a concave sliding block 53, and the third connecting block 51 is fixedly connected with the sheath body 1. By arranging the first sliding groove 52 and the concave sliding block 53, the concave sliding block 53 can slide in the inner wall of the first sliding groove 52, thereby driving the sealing ring 57 to move. The outer surface of the third connecting block 51 is provided with a second sliding groove 54 on one side, the inner wall of the second sliding groove 54 is slidably connected with an L-shaped sliding rod 55, the outer surface of the concave sliding block 53 is provided with a clamping groove 56 on one side, and the inner wall of the clamping groove 56 is matched with the size and shape of the outer surface of one side of the L-shaped sliding rod 55. By arranging the L-shaped sliding rod 55 and the second sliding groove 54, the L-shaped sliding rod 55 can slide in the inner wall of the second sliding groove 54, thereby enabling the L-shaped sliding rod 55 to be clamped into the inner wall of the clamping groove 56. The outer surface of the sealing ring 57 is provided with a limiting groove 58 on one side, the limiting groove 58 is insertedly connected with the concave sliding block 53, and the outer surface arc of the sealing ring 57 is matched with the size and shape of the inner wall of the second connecting port 3. By arranging the limiting groove 58, the concave sliding block 53 can slide in the inner wall of the limiting groove 58, thereby enabling the sealing ring 57 to move.

[0034] Working principle, the working principle of the drive shaft sheath is that when in use, the first connecting port 2 is fixed with the connection of the drive shaft, and the second connecting port 3 is fixed with the surface of the drive shaft. At this time, grease is injected to enable the drive shaft to work normally, and the sheath body 1 is dustproof and sealed. When it is necessary to protect the sheath body 1 at the connection of the drive shaft, the protective ring 43 is pushed to slide in the inner wall of the first connecting port 2 at this time. When the rubber rectangular block 42 is aligned with the rectangular hole 41, the rubber rectangular block 42 is slid in the inner wall of the rectangular hole 41. At this time, the fixed ring 46 is placed into the inner wall of the groove 45, so that the fixed ring 46 slides in the inner wall of the groove 45. At this time, the nut 412 is screwed, so that the bolt 410 rotates in the inner wall of the threaded hole 49 on the first connecting block 47 and the second connecting block 48, thereby enabling the nut 412 to rotate in the inner wall of the placing groove 411. At this time, the nut 414 at the other end of the rotating bolt 410 is rotated, so that the inner wall of the nut 414 rotates on the outer surface of the bolt 410, thereby enabling the protective ring 43 to be fixed. When it is necessary to assist in sealing the inner wall of the second connecting port 3, the concave sliding block 53 is pushed to slide in the inner wall of the first sliding groove 52 at this time, so that the concave sliding block 53 drives the sealing ring 57 to move. When the clamping groove 56 on the concave sliding block 53 is aligned with the L-shaped sliding rod 55, the L-shaped sliding rod 55 is pushed to slide in the inner wall of the second sliding groove 54 at this time, so that the L-shaped sliding rod 55 is inserted into the inner wall of the clamping groove 56, thereby enabling the sealing ring 57 to be limited to seal the grease in the sheath body 1.

Claims

1. A drive shaft boot comprising a boot body (1), characterised in that: The inner wall of the sheath body (1) is provided with a first connecting port (2), the other side of the sheath body (1) is provided with a second connecting port (3), the first connecting port (2) and the second connecting port (3) are communicated, the inner wall of the first connecting port (2) is provided with a protection device (4), the inner wall of the second connecting port (3) is provided with an auxiliary sealing device (5), the protection device (4) comprises a protection ring (43), the outer surface of the sheath body (1) is provided with a rectangular hole (41) near the circular arc surface of the first connecting port (2), the inner wall of the rectangular hole (41) is inserted and connected with a rubber rectangular block (42), the protection ring (43) is fixedly connected with the rubber rectangular block (42), the outer surface of the rubber rectangular block (42) is sleeved with a sealing frame (44), the outer surface of the rubber rectangular block (42) is provided with a groove (45), and the outer surface of the circular arc surface of the protection ring (43) is matched with the size and shape of the inner wall of the first connecting port (2).

2. A drive shaft boot according to claim 1, characterised in that: The inner wall of the groove (45) is inserted and connected with a fixed circular ring (46), and the two ends of the fixed circular ring (46) are fixedly connected with a first connecting block (47) and a second connecting block (48) respectively.

3. A drive shaft boot according to claim 2, characterised in that: The outer surface of the first connecting block (47) and the second connecting block (48) is provided with a threaded hole (49) near the top, and the inner wall of the threaded hole (49) is threadedly connected with a bolt (410).

4. A drive shaft boot according to claim 3, characterised in that: The outer surface of the second connecting block (48) is provided with a placing groove (411), one end of the bolt (410) is fixedly connected with a nut (412), the outer surface of the nut (412) is provided with a cross-shaped groove (413), the outer surface of the bolt (410) is threadedly connected with a nut (414), and the size and shape of the outer surface of the nut (412) are matched with the size and shape of the inner wall of the placing groove (411).

5. A drive shaft boot according to claim 1, wherein: The auxiliary sealing device (5) comprises a third connecting block (51) and a sealing ring (57), the inner wall of the third connecting block (51) is provided with a first sliding groove (52), the inner wall of the first sliding groove (52) is slidably connected with a concave-shaped sliding block (53), and the third connecting block (51) is fixedly connected with the sheath body (1).

6. A drive shaft boot according to claim 5, characterised in that: The outer surface of the third connecting block (51) is provided with a second sliding groove (54), the inner wall of the second sliding groove (54) is slidably connected with an L-shaped sliding rod (55), the outer surface of the concave-shaped sliding block (53) is provided with a clamping groove (56), and the size and shape of the inner wall of the clamping groove (56) are matched with the size and shape of one side of the outer surface of the L-shaped sliding rod (55).

7. A drive shaft boot according to claim 5, wherein: The outer surface of the sealing ring (57) is provided with a limiting groove (58), the limiting groove (58) is insertedly connected with the concave-shaped sliding block (53), and the size and shape of the outer surface of the sealing ring (57) are matched with the size and shape of the inner wall of the second connecting port (3).

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