Reducing mechanism for electric power steering gear

Abstract

The utility model discloses a speed reducing mechanism for an electric power steering gear, which is applied to the field of steering gears and comprises a shell, and the speed reducing mechanism is arranged in the shell. The oil filling pipe is inserted into the oil inlet pipe, the fixing rod is inserted into the oil inlet pipe fixing hole, the sliding rod drives the clamping rod to be clamped with the clamping hole under the action of the first spring to fix the clamping rod, and then oil filling is carried out, so that the purpose of conveniently replacing engine oil can be achieved, the workload is reduced, the working efficiency is improved, and waste of the engine oil is avoided; by rotating the rotating head, the rotating rod drives the first conical tooth to rotate, the first conical gear rotates to drive the second conical tooth to enable the rotating rod to rotate, the rotating rod rotates to enable the screw rod to drive the sliding rod to move, the sliding rod moves to enable the clamping head to be separated from the fixing hole, and the shell cover is opened for maintenance, the purpose of convenient maintenance can be achieved. The workload is reduced, and the maintenance efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of steering gear, especially a kind of reduction mechanism for electric power steering gear. BACKGROUND

[0002] Search China patent, and the announcement number is: CN212797063U, a kind of reduction mechanism for electric circulating ball steering gear, belongs to reduction mechanism technical field.The reduction mechanism is constituted by assembly shell, sun shaft, planet carrier and planet wheel, sun shaft is installed in assembly shell by bearing, planet carrier is installed on assembly shell;The inner wall of the assembly shell on the side of planet carrier is provided with inner ring gear, and planet wheel is installed on planet carrier by planet wheel pin shaft.The reduction mechanism carries out first-stage speed reduction movement by planet carrier cooperation planet wheel and inner ring gear, and carries out second-stage speed reduction movement by planet carrier cooperation second-stage speed reduction wheel, and the transmission efficiency of multistage speed reduction movement is ≥0.5 by the meshing transmission between gear, can effectively improve transmission efficiency, in turn reduce the energy consumption of steering motor, solve the problem that the transmission efficiency of traditional electric power steering system's reduction mechanism is low and leads to the higher energy consumption of steering motor.

[0003] The existing reduction mechanism is inconvenient to replace machine oil, and generally needs to open the plugging bolt on the reduction mechanism when replacing machine oil, then the oil filling pipe of oil filling machine is inserted into the oil filling hole of shell for oil filling, and the hand needs to be pressed all the time to ensure that the oil filling pipe is connected stably with the oil filling hole, which is more troublesome, and the oil filling pipe is easy to separate from the oil filling hole, causing machine oil to leak, causing waste, and inconvenient to maintain, when maintaining the reduction mechanism, the shell cover on the shell needs to be opened, and the shell cover is generally fixed by multiple bolts, and when assembling and disassembling, the multiple bolts need to be disassembled and assembled at one time using tools, the process of disassembling and assembling is more cumbersome, increases the workload, and reduces the maintenance efficiency, in order to solve the above problems, we propose a kind of reduction mechanism for electric power steering gear. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of reduction mechanism for electric power steering gear, its advantage is convenient to replace machine oil and convenient to maintain.

[0005] The technical purpose is achieved by the following technical scheme: a speed reduction mechanism for an electric power steering gear, comprising a shell, a speed reduction mechanism arranged in the shell, an oil inlet pipe communicated with the top of the shell, a plugging mechanism arranged in the oil inlet pipe, an oil filling pipe slidably sleeved with the inner wall of the oil inlet pipe, a fixing rod bolted to the bottom of the oil filling pipe, a pressing rod slidably sleeved with the inner wall of the oil inlet pipe, a first spring arranged between the pressing rod and the inner wall of the oil inlet pipe, a clamping rod bolted to the surface of the pressing rod, a clamping hole arranged on the surface of the fixing rod, and the clamping hole is clamped with one end of the clamping rod.

[0006] The above technical scheme can achieve the purpose of facilitating the replacement of oil, reduce the workload, improve the work efficiency, and avoid the waste of oil.

[0007] The utility model further sets up: the surface cover of shell is equipped with the shell cover, the inner wall rotation of shell cover is sleeved with the pivot, the surface fixed sleeve of pivot is equipped with first bevel gear, the surface of first bevel gear is engaged with second bevel gear, the axle of second bevel gear is fixed sleeve is equipped with the rotation rod, and rotation rod and the inner wall rotation of shell cover are sleeved, the inner wall screw of rotation rod is connected with screw rod, the other end of screw rod is bolted with sliding rod, the surface of sliding rod is bolted with the clamping head, the inner wall of shell is equipped with fixed hole, and fixed hole is clamped with the clamping head.

[0008] The above technical scheme can achieve the purpose of facilitating the maintenance, reduce the workload, and improve the maintenance efficiency.

[0009] The utility model further sets up: the speed reduction mechanism comprises a motor, the surface of motor is bolted with shell, the output end of motor extends to the inside of shell and is connected with worm through the shaft coupling, and the other end of worm is rotatably connected with the inner wall of shell, the surface of worm is engaged with worm wheel, the axle of worm wheel is fixed sleeve is equipped with output shaft, and output shaft and the inner wall of shell are rotatable.

[0010] The above technical scheme can achieve the purpose of facilitating the replacement of oil, reduce the workload, improve the work efficiency, and avoid the waste of oil.

[0011] The utility model further sets up: the plugging mechanism includes first fixed frame, first fixed frame is connected with the inner wall of oil inlet pipe, the top of first fixed frame is connected with telescopic link, the top of telescopic link is connected with the baffle, the surface of telescopic link is equipped with second spring, the inner wall of oil filler pipe is connected with second fixed frame, the bottom of second fixed frame is connected with the top rod.

[0012] Adopt above-mentioned technical scheme, through setting up plugging mechanism, prevent the oil leakage.

[0013] The utility model further sets up: the bottom of shell is connected with the oil discharge pipe, the surface of oil discharge pipe is connected with the oil pipe cover.

[0014] Adopt above-mentioned technical scheme, through setting up oil discharge pipe and oil pipe cover, it is convenient to discharge oil.

[0015] The utility model further sets up: the inner wall of shell and the surface of baffle all are provided with sealing pad.

[0016] Adopt above-mentioned technical scheme, through setting up sealing pad, prevent oil leakage.

[0017] The utility model further sets up: one end of rotating shaft is connected with rotating head.

[0018] Adopt above-mentioned technical scheme, through setting up rotating head, it is convenient to rotate rotating shaft.

[0019] The utility model further sets up: one end of pressing rod is connected with pressing block.

[0020] Adopt above-mentioned technical scheme, through setting up pressing block, it is convenient to move pressing rod.

[0021] Summarized above, the utility model has following beneficial effect:

[0022] 1. The utility model discloses a oil filler pipe is inserted into the oil inlet pipe, makes fixed link insert into the oil inlet pipe fixed hole, and the slide bar is driven under the action of first spring with the clamping rod and clamping hole clamping, is fixed, then carries out the mode of oiling, can reach the purpose of convenient replacement of oil, reduces the work load, improves work efficiency, avoids the waste of oil;

[0023] 2. The utility model discloses the mode that the shell cover is opened and is maintained by rotating rotating head and making rotating rod drive first conical gear rotation, first conical gear rotation drives second conical gear and makes rotating rod rotation, rotating rod rotation makes screw rod drive slide bar removal, and slide bar removal makes the clamping head and fixed hole disengaging clamping, can reach the purpose of convenient maintenance, reduces the work load, improves the efficiency of maintenance. DRAWINGS

[0024] Figure 1is a structure perspective view of the utility model;

[0025] Figure 2 is a structure sectional view of the utility model;

[0026] Figure 3 is a structure sectional view of the utility model;

[0027] Figure 4 is a structure side sectional view of the utility model;

[0028] Figure 5 is a structure perspective view of the utility model Figure 2 is a structure enlarged view of A in the utility model.

[0029] The drawing reference: 1, shell, 2, speed reducer, 3, oil inlet pipe, 4, plugging mechanism, 5, oil filling pipe, 6, fixed rod, 7, press bar, 8, first spring, 9, clamping rod, 10, clamping hole, 11, shell cover, 12, rotating shaft, 13, first conical gear, 14, second conical gear, 15, rotating rod, 16, screw rod, 17, sliding rod, 18, clamping head, 19, fixed hole, 20, motor, 21, worm, 22, worm wheel, 23, output shaft, 24, first fixed frame, 25, telescopic rod, 26, blocking plate, 27, second spring, 28, second fixed frame, 29, ejector rod, 30, oil discharge pipe, 31, oil pipe cover, 32, sealing gasket, 33, rotating head, 34, press block. DETAILED DESCRIPTION

[0030] The utility model will be further explained in detail in connection with the drawings.

[0031] Example 1:

[0032] Reference Figure 1 , Figure 2 and Figure 5 , a kind of electric power steering gear for speed reducer, including shell 1, the inside of shell 1 is provided with speed reducer 2, the top of shell 1 is communicated with oil inlet pipe 3, the inside of oil inlet pipe 3 is provided with plugging mechanism 4, oil inlet pipe 3 inner wall is slidably connected with oil filling pipe 5, the bottom of oil filling pipe 5 is bolted with fixed rod 6, the inner wall of oil inlet pipe 3 is slidably connected with press bar 7, first spring 8 is arranged between the inner wall of oil inlet pipe 3 and the one end of press bar 7, clamping rod 9 is bolted on the surface of press bar 7, clamping hole 10 is arranged on the surface of fixed rod 6, and clamping hole 10 is clamped with the one end of clamping rod 9, by inserting oil filling pipe 5 into oil inlet pipe 3, make fixed rod 6 insert into the fixed hole 19 of oil inlet pipe 3, sliding rod 17 is driven with clamping hole 10 clamping of clamping rod 9 under the action of first spring 8, is fixed, then carries out the mode of oiling, can reach the purpose of facilitating the replacement of engine oil, reduce the workload, improve work efficiency, avoid the waste of engine oil.

[0033] ReferenceFigure 2 And Figure 4 , the speed reducer 2 comprises a motor 20 which is bolted to the surface of the shell 1, the output end of the motor 20 extends to the inside of the shell 1 and is connected with a worm 21 through a shaft coupling, the other end of the worm 21 is rotatably connected with the inner wall of the shell 1, the surface of the worm 21 is engaged with a worm gear 22, the shaft center of the worm gear 22 is fixedly sleeved with an output shaft 23, and the output shaft 23 is rotatably sleeved with the inner wall of the shell 1, by setting the speed reducer 2, the motor 20 is reduced.

[0034] Reference Figure 5 , the sealing mechanism 4 comprises a first fixed frame 24 which is bolted to the inner wall of the oil inlet pipe 3, the top of the first fixed frame 24 is bolted with a telescopic rod 25, the top of the telescopic rod 25 is bolted with a blocking plate 26, the surface of the telescopic rod 25 is sleeved with a second spring 27, the inner wall of the oil filler pipe 5 is bolted with a second fixed frame 28, the bottom of the second fixed frame 28 is bolted with a top rod 29, by setting the sealing mechanism 4, the oil leakage is prevented.

[0035] Reference Figure 2 , the bottom of the shell 1 is communicated with an oil discharge pipe 30, the surface of the oil discharge pipe 30 is threadedly connected with an oil pipe cover 31, by setting the oil discharge pipe 30 and the oil pipe cover 31, the oil is discharged conveniently.

[0036] Reference Figure 5 , one end of the pressing rod 7 is bolted with a pressing block 34, by setting the pressing block 34, the pressing rod 7 is moved conveniently.

[0037] Example 2:

[0038] Reference Figure 1 , Figure 3 And Figure 4 , the surface of the shell 1 is provided with a shell cover 11, the inner wall of the shell cover 11 is rotatably sleeved with a rotating shaft 12, the surface of the rotating shaft 12 is fixedly sleeved with a first bevel gear 13, the surface of the first bevel gear 13 is engaged with a second bevel gear 14, the shaft center of the second bevel gear 14 is fixedly sleeved with a rotating rod 15, and the rotating rod 15 is rotatably sleeved with the inner wall of the shell cover 11, the inner wall of the rotating rod 15 is threadedly connected with a screw rod 16, the other end of the screw rod 16 is bolted with a sliding rod 17, the surface of the sliding rod 17 is bolted with a clamping head 18, the inner wall of the shell 1 is provided with a fixed hole 19, and the fixed hole 19 is clamped with the clamping head 18, by rotating the rotating head 33 to drive the first bevel gear to rotate, the first bevel gear 13 drives the second bevel gear to rotate, the rotating rod 15 rotates, the rotating rod 15 rotates to drive the screw rod 16 to move, the sliding rod 17 moves to make the clamping head 18 and the fixed hole 19 disengage, the shell cover 11 is opened for maintenance, which can achieve the purpose of convenient maintenance, reduce the workload and improve the maintenance efficiency.

[0039] ReferenceFigure 4 And Figure 5 The inner wall of the shell 1 and the surface of the blocking plate 26 are provided with sealing pads 32, and the sealing pads 32 prevent oil leakage.

[0040] With reference to Figure 1 And Figure 4 One end of the rotating shaft 12 is provided with a rotating head 33, and the rotating head 33 facilitates the rotation of the rotating shaft 12.

[0041] The use process is briefly described as follows: when the oil is replaced, the oil pipe cover 31 is opened, the oil in the inside of the speed reduction mechanism 2 is discharged, after the oil is discharged, the oil pipe cover 31 is covered, then the oil filling pipe 5 is inserted into the oil pipe 3, the fixing rod 6 is inserted into the oil pipe 3, the pressing rod 7 drives the clamping rod 9 to be clamped with the clamping hole 10 under the action of the first spring 8, and the clamping rod 9 is clamped, at this time, the jacking rod 29 opens the blocking plate 26, then the oil is filled, after the oil filling is completed, the pressing block 34 is pressed to drive the clamping rod 9 to be disengaged from the clamping hole 10, and the oil filling pipe 5 is removed, at this time, the jacking rod 29 relaxes the extrusion on the blocking plate 26, and the blocking plate 26 blocks the oil pipe 3 under the action of the second spring 27, so that the oil leakage is prevented, the oil filling is completed, and the purpose of facilitating the replacement of the oil is achieved.

[0042] When maintaining, the rotating head 33 is rotated, the rotating head 33 drives the rotating shaft 12 to rotate, the rotating shaft 12 drives the first bevel gear 13 to rotate, the first bevel gear 13 drives the second bevel gear 14 to rotate, the second bevel gear 14 rotates, the second bevel gear 14 drives the rotating rod 15 to rotate, the rotating rod 15 drives the screw rod 16 to move, the screw rod 16 drives the sliding rod 17 to move, the sliding rod 17 drives the clamping head 18 to move, the clamping head 18 is disengaged from the fixing hole 19, the shell cover 11 is opened for maintenance, after the maintenance, the cover plate is covered, the rotating head 33 is reversely rotated to make the clamping head 18 be clamped with the fixing hole 19, and the clamping head 18 is fixed, the maintenance is completed, and the purpose of facilitating the maintenance is achieved.

[0043] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and the person skilled in the art can make a modification without creative contribution according to the needs after reading the specification, but as long as it is within the scope of the claims of the utility model, it is protected by the patent law.

Claims

1. A speed reduction mechanism for an electric power steering gear comprising a housing (1), characterized in that, The inside of the shell (1) is provided with a speed reduction mechanism (2), the top of the shell (1) is communicated with an oil inlet pipe (3), the inside of the oil inlet pipe (3) is provided with a plugging mechanism (4), the inner wall of the oil inlet pipe (3) is slidably sleeved with an oil filling pipe (5), the bottom of the oil filling pipe (5) is bolted with a fixing rod (6), the inner wall of the oil inlet pipe (3) is slidably sleeved with a pressing rod (7), the first spring (8) is arranged between one end of the pressing rod (7) and the inner wall of the oil inlet pipe (3), the surface of the pressing rod (7) is bolted with a clamping rod (9), the surface of the fixing rod (6) is provided with a clamping hole (10), and one end of the clamping hole (10) is clamped with the clamping rod (9).

2. The speed reduction mechanism for an electric power steering gear according to claim 1, wherein The surface of the shell (1) is covered with a shell cover (11), the inner wall of the shell cover (11) is rotatably sleeved with a rotating shaft (12), the surface of the rotating shaft (12) is fixedly sleeved with a first bevel gear (13), the surface of the first bevel gear (13) is engaged with a second bevel gear (14), the shaft center of the second bevel gear (14) is fixedly sleeved with a rotating rod (15), and the rotating rod (15) is rotatably sleeved with the inner wall of the shell cover (11), the inner wall of the rotating rod (15) is threadedly connected with a screw rod (16), the other end of the screw rod (16) is bolted with a sliding rod (17), the surface of the sliding rod (17) is bolted with a clamping head (18), the inner wall of the shell (1) is provided with a fixing hole (19), and the fixing hole (19) is clamped with the clamping head (18).

3. The reduction mechanism for an electric power steering gear according to claim 1, wherein The speed reduction mechanism (2) comprises a motor (20), the surface of the shell (1) is bolted with the motor (20), the output end of the motor (20) extends to the inside of the shell (1) and is connected with a worm (21) through a shaft coupling, and the other end of the worm (21) is rotatably connected with the inner wall of the shell (1), the surface of the worm (21) is engaged with a worm gear (22), the shaft center of the worm gear (22) is fixedly sleeved with an output shaft (23), and the output shaft (23) is rotatably sleeved with the inner wall of the shell (1).

4. The speed reducing mechanism for an electric power steering gear according to claim 1, wherein The plugging mechanism (4) comprises a first fixing frame (24), the inner wall of the oil inlet pipe (3) is bolted with the first fixing frame (24), the top of the first fixing frame (24) is bolted with a telescopic rod (25), the top of the telescopic rod (25) is bolted with a blocking plate (26), the surface of the telescopic rod (25) is sleeved with a second spring (27), the inner wall of the oil filling pipe (5) is bolted with a second fixing frame (28), and the bottom of the second fixing frame (28) is bolted with a jacking rod (29).

5. The speed reduction mechanism for an electric power steering gear according to claim 1, wherein The bottom of the shell (1) is communicated with an oil discharge pipe (30), and the surface of the oil discharge pipe (30) is threadedly connected with an oil pipe cover (31).

6. The reduction mechanism for an electric power steering gear according to claim 4, wherein The inner wall of the shell (1) and the surface of the blocking plate (26) are both provided with a sealing gasket (32).

7. The reduction mechanism for an electric power steering gear according to claim 2, wherein One end of the rotating shaft (12) is bolted with a rotating head (33).

8. The reduction mechanism for an electric power steering gear according to claim 1, wherein One end of the pressing rod (7) is bolted with a pressing block (34).

Images