Guide bushing for automobile steering device

Abstract

The utility model belongs to the technical field of guide bushings, and particularly relates to a guide bushing for an automobile steering gear, which comprises a bushing body, an end ring is arranged at the top end of the bushing body, a concave hole is formed in one side of the end ring, a central hole is formed in the concave hole, and a concentric-square-shaped block is fixedly connected to one side of the end ring. And a concentric-square-shaped groove with an opening in one side is formed in the concentric-square-shaped block. The rotary knob is rotated in the forward direction, the belt wheel and the belt are used for transmission, the two lead screws rotate at the same time, the lead screws drive the second sealing plate to move through the connecting rod, the second sealing plate drives the first sealing plate to move and slide on the concentric-square-shaped groove, the concave hole is not shielded any more, and at the moment, an external syringe can be used; when the guide sleeve is used, a syringe needle is inserted into the center hole, lubricating oil can be directly injected into the guide sleeve body through the center hole, and after oil injection, the knob is rotated reversely, so that the concave hole is sealed by the first sealing plate, dust cannot enter the sleeve body, and meanwhile, the phenomenon of loss cannot occur.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of guide bush, specifically is guide bush for automobile steering gear. BACKGROUND

[0002] In the automobile steering system, the guide bush as a key component, bears the important role of ensuring steering flexibility and accuracy. In order to improve the performance and durability of the guide bush, various improved designs emerge in an endless stream;

[0003] China open authorization invention: CN218235848U discloses an improved guide bush, including the sleeve body, the one end of sleeve body is installed with end ring, the outer surface of sleeve body is evenly provided with the outer sleeve ring, the outer sleeve ring includes the main ring body, the outer surface of main ring body is provided with front cover and rear cover in symmetry, the inside of main ring body is provided with annular spring, the outer surface of front cover is provided with double faced adhesive tape, the outer surface of double faced adhesive tape is provided with isolation paper, the outer surface of isolation paper is provided with the piece of uncovering, the outer surface of main ring body is provided with rubber sheet ring. The utility model discloses, through setting up this main ring body, front cover, rear cover and annular spring etc. Structure, can realize the effective protection and buffering effect of the outer surface of sleeve body under the cooperation of outer sleeve ring and its internal annular spring structure in the process of using this guide bush, avoid the impact of bush, and then guarantee the long and effective use effect of guide bush;

[0004] However, the device still has certain problems in actual use, but the device has certain problems in lubrication maintenance, the guide bush is provided with a center hole for injecting lubricating oil into the bush by a syringe, but in order to block the center hole and prevent dust and other impurities from entering, a rubber plug is used. However, the user needs to remove the rubber plug every time the lubricating oil is added, which is not only cumbersome to operate, but also increases the risk of losing the rubber plug. At the same time, although the rubber plug is provided with a center hole for injecting lubricating oil, the design does not effectively seal the center hole, which means that even if the rubber plug is in place, dust, moisture and other impurities may still penetrate into the guide bush through the center hole, thereby causing potential damage to the bush. Therefore, we propose the guide bush for automobile steering gear to solve the above problems. SUMMARY

[0005] In view of the deficiencies of the prior art, the utility model provides a guide bush for automobile steering gear, which solves the problems raised in the background art.

[0006] The utility model discloses in order to realize the above-mentioned purpose specifically adopts the following technical scheme:

[0007] The utility model provides a guide bush for automobile steering gear, including the sleeve body, the top of sleeve body is equipped with the end ring, one side of end ring is equipped with the recessed hole, is equipped with the center hole on recessed hole, one side of end ring is fixedly connected with the back -shaped piece, is equipped with the back -shaped groove of one side is open on the back -shaped piece, the first sealing plate of sliding connection is equipped on back -shaped groove, one side of first sealing plate is fixedly connected with the second sealing plate, both sides of back -shaped piece are fixedly connected with two rectangle blocks, the screw rod of rotary connection is equipped on rectangle block, the connecting rod of screw thread connection is equipped on screw rod, the end of connecting rod is fixedly connected with one side of second sealing plate, the belt pulley of fixed connection is equipped on screw rod, the same belt of rotary connection is equipped on two belt pulleys, the end of one screw rod of two screw rods is welded with knob.

[0008] Further, the back -shaped piece both sides are equipped with the sliding slot, the sliding block of sliding connection is equipped on sliding slot.

[0009] Further, the connecting rod is equipped with the screw hole, and the connecting rod is screwed with the corresponding screw rod through the screw hole.

[0010] Further, the mounting hole is formed in the rectangular block, a bearing is fixedly connected to the inner wall of the mounting hole, and the inner side of the inner ring of the bearing is welded to the outer side of the corresponding screw rod.

[0011] Further, one side of the sliding block is fixedly connected to one side of the corresponding connecting rod.

[0012] Further, one side of the second sealing plate is in movable contact with the left side of the back -shaped piece.

[0013] Compared with the prior art, the guide bush for automobile steering gear has the following beneficial effects:

[0014] The utility model discloses a guide bush for automobile steering gear, which has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the three -dimensional structure schematic diagram of the utility model;

[0016] Figure 2 It is the inclined three -dimensional structure schematic diagram of the utility model;

[0017] Figure 3The partial three-dimensional structure schematic view of the utility model;

[0018] Figure 4 The utility model Figure 3 The hidden three-dimensional structure schematic view of the first sealing plate and the second sealing plate.

[0019] In the figure: 1, the sleeve body; 2, the end ring; 3, the recess; 4, the center hole; 5, the back-shaped block; 6, the back-shaped groove; 7, the first sealing plate; 8, the second sealing plate; 9, the rectangular block; 10, the screw rod; 11, the connecting rod; 12, the belt pulley; 13, the belt; 14, the knob; 15, the sliding slot; 16, the sliding block. Specific implementation

[0020] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the range protected by the utility model. Embodiment

[0021] As Figures 1-4 Indicated, the utility model discloses an automobile steering gear guide bushing, including sleeve body 1, the top of sleeve body 1 is equipped with end ring 2, the one side of end ring 2 is equipped with recess 3, is equipped with center hole 4 on recess 3, the one side fixedly connected with back-shaped block 5 of end ring 2, is equipped with the back-shaped groove 6 of the one side opening setting on back-shaped block 5, the first sealing plate 7 of sliding connection is equipped with on back-shaped groove 6, the one side fixedly connected with second sealing plate 8 of first sealing plate 7, the both sides fixedly connected with two rectangular blocks 9 of back-shaped block 5, the rotary connection has screw rod 10 on rectangular block 9, is equipped with belt pulley 12 on screw rod 10, the same belt 13 is drivenly connected on two belt pulleys 12, the end of one of two screw rods 10 is welded with knob 14, and the positive rotation knob 14 is driven through belt pulley 12 and belt 13, so that two screw rods 10 rotate simultaneously, and screw rod 10 drives second sealing plate 8 to move through connecting rod 11, and second sealing plate 8 drives first sealing plate 7 to move and slide on back-shaped groove 6, so that recess 3 is not shielded, at this moment, the external injector can be used, and the injector needle is inserted into center hole 4, can directly inject lubricating oil to the inside of guide sleeve body 1 through center hole 4, after oil injection, the reverse rotation knob 14 is made, so that first sealing plate 7 seals recess 3, so that dust does not enter the inside of sleeve body 1, and simultaneously, the phenomenon of loss does not appear.

[0022] In some embodiments, the two sides of the block 5 are provided with sliding grooves 15, and sliding blocks 16 are slidably connected to the sliding grooves 15. The sliding blocks 16 are provided to limit the displacement of the connecting rods 11 during movement.

[0023] In some embodiments, threaded holes are formed in the connecting rods 11, and the connecting rods 11 are threadedly connected to the corresponding lead screws 10 through the threaded holes.

[0024] In some embodiments, mounting holes are formed in the rectangular blocks 9, and bearings are fixedly connected to the inner walls of the mounting holes. The inner sides of the inner rings of the bearings are welded to the outer sides of the corresponding lead screws 10. The rectangular blocks 9 are provided to support.

[0025] In some embodiments, one side of each sliding block 16 is fixedly connected to one side of the corresponding connecting rod 11.

[0026] In some embodiments, one side of the second sealing plate 8 is in movable contact with the left side of the block 5. The second sealing plate 8 is provided to seal.

[0027] When it is necessary to lubricate the guide bushing, the knob 14 is rotated in the forward direction. The knob 14 drives the two lead screws 10 to rotate simultaneously through the belt pulley 12 and the belt 13. The lead screws 10 drive the corresponding connecting rods 11 to move, and the connecting rods 11 drive the corresponding sliding blocks 16 to slide on the sliding grooves 15. At the same time, the connecting rods 11 drive the second sealing plate 8 to move, and the second sealing plate 8 drives the first sealing plate 7 to move. The first sealing plate 7 slides on the block 5, so that the recessed hole 3 is not blocked. At this time, an external syringe can be used, and the needle of the syringe can be inserted into the central hole 4. Lubricating oil can be directly injected into the interior of the guide bushing 1 through the central hole 4, so that the interior of the bushing 1 can be quickly lubricated. After the oil is injected, the knob 14 is rotated in the reverse direction. The knob 14 drives the two lead screws 10 to rotate simultaneously through the belt pulley 12 and the belt 13. The lead screws 10 drive the corresponding connecting rods 11 to move, and the connecting rods 11 drive the corresponding sliding blocks 16 to slide on the sliding grooves 15. At the same time, the connecting rods 11 drive the second sealing plate 8 to move, and the second sealing plate 8 drives the first sealing plate 7 to move. The first sealing plate 7 seals the recessed hole 3, so that dust cannot enter the interior of the bushing 1, and the loss phenomenon does not occur.

[0028] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A guide bushing for a steering gear of a vehicle, comprising a sleeve body (1), characterized in that: The top end of the sleeve body (1) is provided with an end ring (2), one side of the end ring (2) is provided with a recess (3), the recess (3) is provided with a center hole (4), one side of the end ring (2) is fixedly connected with a back-shaped block (5), the back-shaped block (5) is provided with a back-shaped groove (6) with one side being an opening, the back-shaped groove (6) is slidably connected with a first sealing plate (7), one side of the first sealing plate (7) is fixedly connected with a second sealing plate (8), both sides of the back-shaped block (5) are fixedly connected with two rectangular blocks (9), the rectangular blocks (9) are rotatably connected with lead screws (10), the lead screws (10) are threadedly connected with connecting rods (11), the ends of the connecting rods (11) are fixedly connected with one side of the second sealing plate (8), the lead screws (10) are fixedly connected with belt pulleys (12), the same belt (13) is drivingly connected with the two belt pulleys (12), and the end of one of the two lead screws (10) is welded with a knob (14).

2. The guide bushing for a vehicle steering gear as set forth in claim 1, characterized by: Both sides of the back-shaped block (5) are provided with sliding grooves (15), and the sliding grooves (15) are slidably connected with sliding blocks (16).

3. The guide bushing for a vehicle steering gear as set forth in claim 2, characterized by: The connecting rod (11) is provided with a threaded hole, and the connecting rod (11) is threadedly connected with the corresponding lead screw (10) through the threaded hole.

4. The guide bushing for a vehicle steering gear as set forth in claim 3, characterized by: The rectangular block (9) is provided with a mounting hole, and the inner wall of the mounting hole is fixedly connected with a bearing, and the inner side of the inner ring of the bearing is welded with the outer side of the corresponding lead screw (10).

5. The guide bushing for a vehicle steering gear as set forth in claim 4, characterized by: One side of the sliding block (16) is fixedly connected with one side of the corresponding connecting rod (11).

6. The guide bushing for a vehicle steering gear as set forth in claim 5, characterized by: One side of the second sealing plate (8) is in movable contact with the left side of the back-shaped block (5).

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