Electric steering gear structure of tail worm and gear reducing mechanism

Abstract

The utility model discloses an electric steering gear structure of a tail worm and gear reducing mechanism, and relates to the related technical field of steering gears. The power assisting device comprises a power assisting motor, a fixing shell, a rotating disc and a fixing block, the fixing shell is fixed to the top end of the power assisting motor, a worm is fixed to the output end of the power assisting motor and movably connected into the fixing shell in a penetrating mode, a rotating block is fixed to the top end of the worm, a fixing block is movably connected to the outer side of the rotating block, and a worm wheel is rotatably connected into the portion, on one side of the worm, of the fixing shell. A movable disc is fixed to one end of the worm gear, an installation insertion opening is formed in the movable disc in a penetrating mode, a rotating disc is arranged at the end, away from the worm gear, of the movable disc, and an insertion block is fixed to the end, close to the fixed shell, of the rotating disc and inserted into the installation insertion opening. Through the arrangement of the power-assisted motor, the fixing shell, the rotating disc and the fixing block, the problems that a steering gear of a worm and gear speed reducing mechanism is limited in rotating operation power and inconvenient to use, and a rotating arm is inconvenient to replace after being damaged are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the related technical field of steering gear, in particular, relate to a tail worm and gear speed reduction mechanism's electric power steering gear structure. BACKGROUND

[0002] Steering gear is the key component in the automobile steering system, and its main function is to transform the steering torque and steering angle of the driver on the steering wheel (mainly deceleration and torque increase), and then output to the steering rod mechanism, so that the automobile turns, therefore, the steering gear is essentially a speed reducer, by adopting worm and gear cooperation, when rotating, the rotation direction is adjusted, and the rotation direction can be adjusted in detail, but it still has the following problems in actual use:

[0003] The steering gear of the worm and gear speed reduction mechanism rotates and drives the corresponding structure to rotate, but when working, only manual power of the operator or the rotation of the steering speed reduction structure is used to adjust the direction, the rotation power is limited, the steering operation is not smooth enough, and the use is not convenient enough;

[0004] When the steering gear of the worm and gear speed reduction mechanism drives the rotation of the rotation arm, since the torque of the rotation arm drive is large, when the large torque is matched, the rotation arm is easily damaged, after the rotation arm is damaged, it needs to be replaced to restore normal work. UTILITY MODEL CONTENTS

[0005] The utility model discloses a tail worm and gear speed reduction mechanism's electric power steering gear structure, through setting up power -assisted motor, fixed shell, rotary disc and fixed block, the problem that the steering gear of worm and gear speed reduction mechanism is limited in rotation operation power, inconvenient to use, and inconvenient to replace after the rotation arm is damaged is solved.

[0006] To solve the above technical problems, the utility model is realized by the following technical schemes:

[0007] The utility model discloses an electric diverter structure of tail worm gear reduction mechanism, including assist motor, fixed shell, rotary disc and fixed block, the top of assist motor is fixed with fixed shell, the output of assist motor is fixed with worm, the worm is connected in fixed shell through the hole, the top of worm is fixed with the rotary block, the rotary block outside swing joint has fixed block, the rotary block of fixed shell in one side is connected with worm wheel and rotates, the worm wheel and worm mesh each other, one end of worm wheel is fixed with movable disc, the movable disc is passed through and is established and is inserted the mouth in, movable disc is provided with rotary disc away from the one end of worm wheel, the one end fixed with plug block of rotary disc is close to fixed shell, the plug block is inserted in the installation insert mouth, when working, through assist motor work, drive worm rotation, through fixed shell and rotate the connection in worm wheel, through worm rotation, drive worm wheel rotation, through worm wheel and worm mesh each other, drive rotary disc rotation, through fixed block in rotary set, drive worm rotation.

[0008] Further, the rotary block is provided with an inner insert hole, a pressing switch is symmetrically fixed on one side of the inner insert hole with a vertical center line as the symmetry axis, the rotary block is movably connected with the rotary block through the inner insert hole, and the pressing switch is used to start the assist motor to provide power for the worm rotation after being pressed.

[0009] Further, the fixed block is provided with an active cavity, the rotary block is movably connected in the active cavity and the inner insert hole, the fixed block is movably connected with the rotary block through the active cavity, and the rotary block is movably connected in the inner insert hole, so that the position of the rotary block is limited.

[0010] Further, the rotary block is provided with an inner insert hole, a pressing switch is symmetrically fixed on one side of the inner insert hole with a vertical center line as the symmetry axis, the rotary block is movably connected with the rotary block through the inner insert hole, and the pressing switch is used to start the assist motor to provide power for the worm rotation after being pressed.

[0011] Further, the rotary disc is provided with a rotary arm, the rotary disc and the plug block are provided with an active hole along the straight line where the center axis of the rotary disc is located, the rotary disc is rotated through the rotary arm, and the steering structure is steered.

[0012] Further, the active hole is inserted with a fastening bolt, the fastening bolt is threadedly connected in the worm wheel, and the center axis of the fastening bolt and the center axis of the worm wheel are located on the same straight line, the active hole is inserted into the worm wheel through the fastening bolt, and the rotary disc and the fixed shell are connected together.

[0013] The utility model has the advantages of the following:

[0014] The utility model discloses a power -assisted motor, fixed shell, rotary disc and fixed block are set up, solved the limited power of steering gear of worm gear speed reducer mechanism rotation operation, the inconvenient problem of using, through the rotation of transmission shaft of speed reducer mechanism drive, through the rotation of transmission shaft, drive fixed block rotation, through fixed block rotation, drive the rotation of the rotating block in fixed block and press down one press switch, when press switch is pressed down, start power -assisted motor, power -assisted motor drives worm rotation, power -assisted worm drive rotary disc rotation, make the steering gear of worm gear speed reducer mechanism rotation operation power better, use more convenient.

[0015] The utility model discloses a power -assisted motor, fixed shell, rotary disc and fixed block are set up, solved the inconvenient problem of replacement when steering gear of worm gear speed reducer mechanism rotation arm is damaged, when installing rotary disc in fixed shell, the plug -in block on rotary disc is aligned with the installation spigot on movable disc, and when the plug -in block is inserted into the installation spigot, the preliminary setting of plug -in block is completed, immediately fastening bolt is inserted into movable hole on rotary disc, and then fastening bolt is screwed into worm and is after screwing, make worm, movable disc and rotary disc install together between rotary disc, make the steering gear of worm gear speed reducer mechanism rotation arm damage replacement more convenient. DRAWINGS

[0016] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be to the embodiment description needed to use the drawing briefly introduced, obviously, the drawing in the following description only some embodiments of the utility model, for the ordinary skilled person in the art, under the premise of not paying creative labor, can also obtain other drawings according to these drawings.

[0017] Figure 1 It is a kind of electric steering gear structure assembly structure perspective drawing of tail worm gear speed reducer mechanism;

[0018] Figure 2 It is power -assisted motor structure perspective drawing;

[0019] Figure 3 It is fixed shell half cut structure perspective drawing;

[0020] Figure 4 It is rotary disc rear view structure perspective drawing;

[0021] Figure 5 It is fixed block partial cut structure perspective drawing.

[0022] Reference signs:

[0023] 1, assist motor; 101, worm; 102, rotating block; 103, interpolation port; 104, press switch; 2, fixed shell; 201, worm gear; 202, movable disc; 203, mounting port; 204, fastening bolt; 3, rotating disc; 301, movable hole; 302, rotating arm; 303, plug block; 4, fixed block; 401, movable cavity; 402, rotating block; 403, transmission shaft. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0025] Please refer to Figures 1-5 The utility model discloses an electric steering gear structure of tail worm gear reduction mechanism, including assist motor 1, fixed shell 2, rotating disc 3 and fixed block 4, the top of assist motor 1 is fixed with fixed shell 2, when assist motor 1 works, worm gear 201 is fixed in it through fixed shell 2, and assist worm gear 201 rotates, the output end of assist motor 1 is fixed with worm 101, when rotating through worm 101, drive worm gear 201 to rotate, and worm 101 is connected in fixed shell 2 through the activity, and the top of worm 101 is fixed with rotating block 102, and rotating block 102 is connected with fixed block 4 through the activity, and fixed block 4 is connected with rotating block 102 and worm 101 through the activity when rotating, and the fixed shell 2 in one side of worm 101 is rotatably connected with worm gear 201, and worm gear 201 is engaged with worm 101, and worm gear 201 is driven to rotate through worm 101 when rotating, and one end of worm gear 201 is fixed with movable disc 202, and the installation port 203 is set up in movable disc 202, and the one end of movable disc 202 away from worm gear 201 is provided with rotating disc 3, and the one end of rotating disc 3 close to fixed shell 2 is fixed with plug block 303, and when installing rotating disc 3 in fixed shell 2, the plug block 303 on rotating disc 3 is aligned with the installation port 203 on movable disc 202, and the plug block 303 is inserted into the installation port 203, and the preliminary setting of plug block 303 is completed.

[0026] Specifically, the rotating block 102 is provided with an inner insertion port 103, and a press switch 104 is symmetrically fixed on one side of the inner insertion port 103 with a vertical center line as a symmetric axis. The rotating block 102 is movably connected to the rotating block 402 through the inner insertion port 103. In operation, when the rotating block 402 presses the corresponding press switch 104 clockwise, the power-assisted motor 1 drives the worm 101 to rotate clockwise; when the rotating block 402 presses the corresponding press switch 104 counterclockwise, the power-assisted motor 1 drives the worm 101 to rotate counterclockwise.

[0027] Further, the fixed block 4 is provided with a movable cavity 401, and the movable cavity 401 is provided with a rotating block 402 at the top. The rotating block 102 is movably connected in the movable cavity 401, and the rotating block 402 is movably connected in the inner insertion port 103. The fixed block 4 is movably connected to the rotating block 402 through the movable cavity 401, and the rotating block 402 rotates in the inner insertion port 103 when the fixed block 4 rotates, thereby pressing the corresponding press switch 104.

[0028] Further, the angle between the two straight lines at the top of the rotating block 402 is obtuse. The worm 101 is movably connected to the bottom end of the fixed block 4. The top end of the transmission shaft 403 is fixed in the center of the top end of the fixed block 4, and the top end of the transmission shaft 403 is connected to the output end of the speed reduction mechanism and is driven to rotate by an external power source.

[0029] The operation process of the embodiment is as follows: in operation, the transmission shaft 403 is driven to rotate by the speed reduction mechanism. The fixed block 4 is driven to rotate by the rotation of the transmission shaft 403. The rotating block 402 in the fixed block 4 is driven to rotate by the rotation of the fixed block 4, thereby pressing one press switch 104. When the press switch 104 is pressed, the power-assisted motor 1 is started. The power-assisted motor 1 drives the worm 101 to rotate, and the power-assisted worm 101 drives the rotating disc 3 to rotate. Specific embodiment two

[0030] Please refer to Figures 1-4 On the basis of the specific embodiment one, the rotating disc 3 is provided with a rotating arm 302 on the periphery. The rotating disc 3 and the plug block 303 are provided with a movable hole 301 along the straight line where the center axis of the rotating disc 3 is located. When the rotating disc 3 rotates, the rotating arm 302 is driven to rotate, and the movable hole 301 movably connects the fastening bolt 204.

[0031] Specifically, the movable hole 301 is provided with a fastening bolt 204, which is threadedly connected in the worm gear 201. The center axis of the fastening bolt 204 and the center axis of the worm gear 201 are on the same straight line. In operation, after the rotating disc 3 is arranged on the fixed shell 2, the rotating disc 3 is fixed in position on the fixed shell 2 by screwing the fastening bolt 204.

[0032] The operation process of the embodiment is as follows: when the rotating disc 3 is installed in the fixed shell 2, the plug 303 on the rotating disc 3 is aligned with the installation socket 203 on the movable disc 202, the plug 303 is inserted into the installation socket 203, the fastening bolt 204 is inserted into the movable hole 301 on the rotating disc 3, the fastening bolt 204 is screwed into the worm gear 201, and after being screwed, the worm gear 201, the movable disc 202 and the rotating disc 3 are installed together, then the rotating arm 302 is installed with the steering structure, when the worm gear 201 rotates, the rotating arm 302 rotates, and the steering structure is steered through the rotation of the rotating arm 302.

[0033] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0034] The preferred embodiments of the application disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details, nor limit the application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.

Claims

1. An electric power steering gear structure of a tail worm gear and worm reduction mechanism, comprising a power assist motor (1), a fixed housing (2), a rotating disc (3) and a fixed block (4), characterized in that: The top of the assist motor (1) is fixed with a fixed shell (2), the output end of the assist motor (1) is fixed with a worm (101), the worm (101) is through the movable connection in the fixed shell (2), the top of the worm (101) is fixed with a rotating block (102), the rotating block (102) outer side is movably connected with a fixed block (4), the fixed shell (2) in one side of the worm (101) is rotatably connected with a worm gear (201), the worm gear (201) and the worm (101) are engaged with each other, one end of the worm gear (201) is fixed with a movable disc (202), the movable disc (202) is through the opening of the installation socket (203), the movable disc (202) away from the worm gear (201) one end is provided with a rotating disc (3), the rotating disc (3) is close to the fixed shell (2) one end is fixed with the plug block (303), the plug block (303) is inserted in the installation socket (203).

2. An electrically powered steering gear structure of a tail worm gear and worm reduction mechanism according to claim 1, characterized in that: The rotating block (102) is provided with an inner socket (103), and the inner socket (103) is provided with a pressing switch (104) on one side surface in the vertical direction.

3. An electrically powered steering gear structure of a tail worm gear and worm reduction mechanism according to claim 2, characterized in that: The fixed block (4) is provided with an activity cavity (401), and the activity cavity (401) is provided with a rotating block (402) on the top, and the rotating block (102) is movably connected in the activity cavity (401), and the rotating block (402) is movably connected in the inner socket (103).

4. A motorized steering gear structure of a tail worm and gear reduction mechanism according to claim 3, characterized in that: The angle between the two straight lines of the rotating block (402) is obtuse, the worm (101) is movably connected in the bottom of the fixed block (4), and the top of the fixed block (4) is fixed with a transmission shaft (403).

5. A motorized steering gear structure of a tail worm and gear reduction mechanism according to claim 1, characterized in that: The rotating disc (3) is provided with a rotating arm (302), and the rotating disc (3) and the plug block (303) are provided with an activity hole (301) along the straight line of the rotating disc (3) center axis.

6. An electrically powered steering gear structure of a tail worm gear and worm reduction mechanism according to claim 5, characterized in that: The activity hole (301) is inserted with a fastening bolt (204), the fastening bolt (204) is screw connected in the worm gear (201), and the center axis of the fastening bolt (204) and the center axis of the worm gear (201) are on the same straight line.

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