A flat housing structure of an electrically powered recirculating ball steering gear
Patent Information
- Application Number
- CN202522333733.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-04
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-04
AI Technical Summary
[0003]本实用新型的目的在于提供一种电动循环球转向器的扁壳体结构，通过设置下安装壳、前板、上安装壳、安装板和封闭板，解决了电动循环球转向器的扁壳体结构在维护工作中操作不够方便，且面对不同输入轴安装方向的需求操作不够方便的问题
本实用新型通过设置下安装壳和前板，解决了电动循环球转向器的扁壳体结构在维护工作中操作不够方便的问题，安装后，设置好转向器对应的扇形齿轮后，将前板卡到下安装壳前侧，同时扇形齿轮的输出轴穿过外固定套后伸出外固定套，同时输出轴通过外固定套内的密封环将输出轴和外固定套之间的缝隙封闭，随即通过安装螺杆二穿过下安装壳后，将紧固螺帽二旋到安装螺杆二上并旋紧后，将前板安装设置在下安装壳上，在拆卸时，将所有的紧固螺帽二旋下后，再拉动前板，将前板取下，即可进行下安装壳中的扇形齿轮的维护等，使得电动循环球转向器的扁壳体结构在维护工作中操作更加方便。
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Figure CN224915977U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of steering gear technology, and in particular relates to a flat shell structure of an electric recirculating ball steering gear. Background Technology
[0002] An electric recirculating ball steering system is a steering system that combines the traditional recirculating ball mechanical structure with modern electronic power steering technology. It is primarily used in commercial vehicles and large SUVs where high strength, reliability, and load-bearing capacity are required. Its core mechanical component employs a robust and durable recirculating ball mechanism, where the cyclical movement of balls between a screw and a nut converts the rotation of the steering wheel into wheel steering action. The electronic control component, through a torque sensor, electronic control unit, and power steering motor, provides auxiliary torque in real time based on the driver's steering force and vehicle speed. During operation, the outer housing of the electric recirculating ball steering system is flat, used to mount and connect the transmission structure. However, the flat housing structure of the electric recirculating ball steering system still has the following drawbacks in practical use: In the installation and setup of the electric recirculating ball steering gear, the flat shell structure usually requires an external sealing mechanism to seal the outer shell. When maintaining the sector gear on the recirculating ball, the entire shell needs to be disassembled, which is not convenient for maintenance work. Secondly, the flat housing structure of the electric recirculating ball steering gear is usually only suitable for the installation direction of one input shaft. When facing the requirement of the reverse input shaft installation direction, another type of housing needs to be produced, which is not convenient for operation when facing different input shaft installation directions. Utility Model Content
[0003] The purpose of this utility model is to provide a flat shell structure for an electric recirculating ball steering gear. By setting up a lower mounting shell, a front plate, an upper mounting shell, a mounting plate, and a closing plate, it solves the problems that the flat shell structure of the electric recirculating ball steering gear is not convenient to operate during maintenance and is not convenient to operate when facing different input shaft installation directions.
[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a flat shell structure for an electric recirculating ball steering gear, comprising a lower mounting shell, a front plate, an upper mounting shell, a mounting plate, and a closing plate. The upper mounting shell is fixed to the top of the lower mounting shell. Both ends of the upper mounting shell are open, and mounting plates are provided at both ends of the upper mounting shell. A closing plate is provided on the side of each mounting plate that is far apart from each other. Each mounting plate has a through-hole. A limit sleeve is fixed to the outside of the through-hole on the side of each mounting plate that is close to each other. A movable column is fixed to the side of each closing plate that is close to each other. The movable column passes through the through-hole and is movably connected to the limit sleeve. The front plate is fixed to the front of the lower mounting shell, and the upper mounting shell is fixed to the top of the lower mounting shell. The upper mounting shell is open at both ends and closed by the mounting plates. A closing plate is provided on the outside of the mounting plates. The mounting plates have a movable hole for the movable column or steering gear input shaft to pass through. A limit sleeve is provided on the inside of the movable hole for connecting the worm gear. The movable column of the closing plate passes through the movable hole and extends into the limit sleeve to limit the position of the worm gear end. The front of the lower mounting shell is closed by the front plate, forming a complete shell structure.
[0005] Furthermore, a mounting sleeve is fixed to the rear part of the inner wall of the lower mounting shell, and both ends of the lower mounting shell are convex at the upper part. Mounting screws are symmetrically fixed at the upper convex positions of both ends of the lower mounting shell. Mounting screws are fixed at each corner of the front side of the lower mounting shell. The mounting sleeve fixed to the rear inner wall of the lower mounting shell is used to connect the steering gear sector gear shaft. Mounting screws are symmetrically arranged at the upper convex positions of both ends of the lower mounting shell, and mounting screws are arranged at the four corners of the front side to connect the mounting plate and the front plate.
[0006] Furthermore, an outer fixing sleeve is fixed to the center of the front side of the front plate. The outer fixing sleeve is connected to the lower mounting shell. A sealing ring is fixed on the inner wall of the outer fixing sleeve. Four mounting screws are respectively set through the four corners of the front plate, and the parts of the mounting screws extending out of the front plate are threadedly connected to fastening nuts. The outer fixing sleeve is fixed to the center of the front plate and is connected to the lower mounting shell. A sealing ring is provided on the inner wall of the outer fixing sleeve to seal the output shaft. After the mounting screws pass through the four corners of the front plate, they are fixed by fastening nuts, so as to realize the tight connection between the front plate and the lower mounting shell.
[0007] Furthermore, a connecting port is provided at the center of the bottom of the upper mounting shell, which is connected to the lower mounting shell. Mounting ears are fixed at the four corners of the inner wall of the upper mounting shell near the end edge. The connecting port at the bottom of the upper mounting shell is connected to the lower mounting shell, and mounting ears are provided at the four corners of the inner walls at both ends, which are connected to the mounting plate by mounting bolts.
[0008] Furthermore, a slot is provided at the lower corner of the mounting plate near the upper mounting shell. The slot is movably connected to the protrusions at both ends of the lower mounting shell. A movable hole is provided symmetrically and correspondingly through the slot in the lower part of the mounting plate. The mounting screws at both ends of the lower mounting shell pass through the movable hole on the mounting plate. A fastening nut is threaded around the part of the mounting screw that extends out of the mounting plate. The slot at the lower part of the mounting plate engages with the protrusion of the lower mounting shell. The movable hole at the lower part allows the mounting screw to pass through. The fastening nut locks the mounting plate in place, thus fixing the mounting plate to the lower mounting shell.
[0009] Furthermore, the mounting plate has four mounting screw holes arranged in a ring array on the side away from the upper mounting shell. The mounting screw holes are located on the outside of the movable opening. Mounting bolts are inserted through the four mounting ears at the same end as the upper mounting shell inside the mounting plate. The mounting bolts are threaded into the mounting ears. The four mounting screw holes arranged in a ring array on the outside of the mounting plate are used to connect the sealing plate. The mounting plate is connected to the mounting ears of the upper mounting shell by the mounting bolts, thereby fixing the mounting plate to the upper mounting shell.
[0010] Furthermore, each of the four corners of the enclosure plate is connected with a sealing bolt, which is threaded into the mounting screw hole. The end of the movable column away from the enclosure plate is rotatably connected to a rotating disk. The four corners of the enclosure plate are connected and fixed to the mounting screw hole on the mounting plate by the sealing bolts. The end of the movable column is provided with a rotating disk, which abuts against the end of the worm gear and moves with it, thus playing a role in limiting and supporting.
[0011] This utility model has the following beneficial effects: This invention solves the problem of inconvenient operation during maintenance of the flat shell structure of the electric recirculating ball steering gear by setting a lower mounting shell and a front plate. After installation, after setting the corresponding sector gear of the steering gear, the front plate is snapped onto the front side of the lower mounting shell. At the same time, the output shaft of the sector gear passes through the outer fixing sleeve and extends out of the outer fixing sleeve. The gap between the output shaft and the outer fixing sleeve is sealed by the sealing ring inside the outer fixing sleeve. Then, after the second mounting screw passes through the lower mounting shell, the second fastening nut is screwed onto the second mounting screw and tightened. The front plate is then installed on the lower mounting shell. During disassembly, all the second fastening nuts are unscrewed, and then the front plate is pulled to remove it. Maintenance of the sector gear in the lower mounting shell can then be performed, making the flat shell structure of the electric recirculating ball steering gear more convenient to operate during maintenance.
[0012] This invention solves the problem of inconvenient operation of the flat shell structure of the electric recirculating ball steering gear when facing different input shaft installation directions by setting an upper mounting shell, mounting plate, and sealing plate. First, during operation, the direction of the worm gear's extended end within the upper mounting shell is determined. After the worm gear is positioned at its corresponding end within the upper mounting shell, the slots on the two mounting plates are engaged with the top of the lower mounting shell. The mounting plate is then placed on the corresponding end of the upper mounting shell, and the mounting bolt is inserted into the mounting plate, screwed into the mounting lug of the upper mounting shell, and tightened. During installation, the worm gear's power input end passes through the limiting sleeve on the mounting plate and then exits through the movable opening. The mounting plate corresponding to one end of the worm gear within the upper mounting shell is connected to the movable opening on the corresponding mounting plate by inserting the movable post on the sealing plate into the movable opening on the corresponding mounting plate, and then sliding it into the limiting sleeve. The rotating disk at the end of the movable post abuts against the rotating disk at the end of the limiting sleeve, thus installing the worm gear and the recirculating ball structure on it within the upper mounting shell. This makes the flat shell structure of the electric recirculating ball steering gear more convenient to operate when facing different input shaft installation directions. Attached Figure Description
[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 A three-dimensional view of the assembly structure of a flat shell structure of an electric recirculating ball steering gear; Figure 2 This is a three-dimensional structural view of the lower mounting shell; Figure 3 This is a three-dimensional structural diagram of the front panel; Figure 4 This is a three-dimensional view of the upper mounting shell structure; Figure 5 This is a three-dimensional structural view of the mounting plate; Figure 6 This is a three-dimensional structural diagram of a closed plate.
[0015] Figure label: 1. Lower mounting shell; 101. Mounting screw one; 102. Fastening nut one; 103. Mounting sleeve; 104. Mounting screw two; 105. Fastening nut two; 2. Front plate; 201. Outer fixing sleeve; 202. Sealing ring; 3. Upper mounting shell; 301. Mounting ear; 302. Connecting port; 4. Mounting plate; 401. Movable port; 402. Limiting sleeve; 403. Mounting screw hole; 404. Slot; 405. Movable hole; 406. Mounting bolt; 5. Sealing plate; 501. Movable column; 5011. Rotating disk; 502. Sealing bolt. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model. Specific Implementation Example 1
[0017] Please see Figure 1-3 This utility model relates to a flat shell structure for an electric recirculating ball steering gear, comprising a lower mounting shell 1, a front plate 2, an upper mounting shell 3, a mounting plate 4, and a closing plate 5. The upper mounting shell 3 is fixed to the top of the lower mounting shell 1. During operation, the steering gear's actuator is installed within the lower mounting shell 1, and the steering control mechanism is installed within it via the upper mounting shell 3. Both ends of the upper mounting shell 3 are open, and mounting plates 4 are provided at both ends of the upper mounting shell 3, which close the ends of the upper mounting shell 3. A closing plate 5 is provided on the side of the two mounting plates 4 that is far apart from each other, and the closing plate 5 closes the movable opening 401 on the mounting plate 4. Each mounting plate 4 has a through opening 401. The mounting plate 4 passes through the through opening 401 and passes through the movable column 501 or the input shaft of the recirculating ball steering gear. On the outer side of the movable opening 401 of the two mounting plates 4 that are close to each other, a limit sleeve 402 is fixed. The limit sleeve 402 is movably connected to the worm gear of the recirculating ball steering gear. On the outer side of the two closed plates 5 that are close to each other, a movable column 501 is fixed. After passing through the movable opening 401, the movable column 501 is movably connected to the limit sleeve 402. The movable column 501 limits the position of the end of the worm gear on the limit sleeve 402. A front plate 2 is fixed to the front side of the lower mounting shell 1. The front plate 2 closes the front side of the lower mounting shell 1.
[0018] Specifically, a mounting sleeve 103 is fixed to the rear part of the inner wall of the lower mounting shell 1. Both ends of the lower mounting shell 1 are raised. Mounting screws 101 are symmetrically fixed to the raised parts at both ends of the lower mounting shell 1. Mounting screws 104 are fixed to each corner of the front side of the lower mounting shell 1. When the lower mounting shell 1 is working, the connecting shaft of the steering gear sector gear is movably connected through the mounting sleeve 103. Mounting screws 101 are fastened to the lower mounting shell 1 and the mounting plate 4. Mounting screws 104 fix the front plate 2 on it.
[0019] Furthermore, an outer fixing sleeve 201 is fixed to the center of the front side of the front plate 2. The outer fixing sleeve 201 is connected to the lower mounting shell 1. A sealing ring 202 is fixed on the inner wall of the outer fixing sleeve 201. Four mounting screws 104 are respectively set through the four corners of the front plate 2, and the part of the mounting screws 104 extending out of the front plate 2 is threadedly connected to the fastening nut 105. The front plate 2 is movably connected to the output shaft of the steering gear sector gear through the outer fixing sleeve 201. After the mounting screws 104 pass through the front plate 2, the fastening nut 105 is threadedly connected to the mounting screws 104, and the front plate 2 is fastened to the front side of the lower mounting shell 1.
[0020] The operation process of this embodiment is as follows: During operation, after the worm gear and circulating ball mechanism are installed in the upper mounting shell 3, the bearing at the rear end of the sector gear connected to the circulating ball mechanism is aligned with the front opening of the lower mounting shell 1 and inserted into the mounting sleeve 103 of the lower mounting shell 1. After ensuring that the sector gear meshes with the meshing structure of the circulating ball mechanism, the front plate 2 is then snapped onto the front side of the lower mounting shell 1. At the same time, the output shaft of the sector gear passes through the outer fixing sleeve 201 and extends out of the outer fixing sleeve 201. Simultaneously, the output shaft seals the gap between the output shaft and the outer fixing sleeve 201 through the sealing ring 202 in the outer fixing sleeve 201. Then, after the mounting screw 104 passes through the lower mounting shell 1, the fastening nut 105 is screwed onto the mounting screw 104 and tightened. The front plate 2 is then installed on the lower mounting shell 1. During disassembly, all the fastening nuts 105 are unscrewed, and then the front plate 2 is pulled to remove it. Maintenance of the sector gear in the lower mounting shell 1 can then be performed. Specific Implementation Example 2
[0021] Please see Figure 1 , 4 5, 6. Based on the specific embodiment one, the bottom center of the upper mounting shell 3 is provided with a connecting port 302, which is connected to the lower mounting shell 1. The four corners of the inner wall of the upper mounting shell 3 near the end edge are all fixed with mounting ears 301. The upper mounting shell 3 is connected to the lower mounting shell 1 through the connecting port 302, and the mounting bolts 406 are connected through the mounting ears 301.
[0022] Specifically, a slot 404 is provided at the lower corner of the mounting plate 4 near the upper mounting shell 3. The slot 404 is movably connected to the protrusions at the upper ends of the lower mounting shell 1. A movable hole 405 is provided in the lower part of the mounting plate 4, corresponding to the slot 404. The mounting screws 101 at both ends of the lower mounting shell 1 are set through the movable hole 405 on the mounting plate 4. The part of the mounting screw 101 extending out of the mounting plate 4 is threaded with a fastening nut 102. The mounting plate 4 is locked onto the lower mounting shell 1 through the slot 404 and the mounting screw 101 is movably connected through the movable hole 405. After the fastening screw 1 passes through the mounting plate 4, it is screwed onto the mounting screw 101 extending out of the mounting plate 4 by the fastening nut 102 and tightened, so that the lower mounting shell 1 and the mounting plate 4 are securely installed.
[0023] Furthermore, four mounting screw holes 403 are arranged in a ring array on the side of the mounting plate 4 away from the upper mounting shell 3. The mounting screw holes 403 are located outside the movable opening 401. Mounting bolts 406 are inserted through the four mounting ears 301 at the same end as the upper mounting shell 3 inside the mounting plate 4. The mounting bolts 406 are threaded into the mounting ears 301. The mounting plate 4 is threaded with a sealing bolt 502 through the mounting screw holes 403. After the mounting bolts 406 are inserted into the mounting plate 4, they are screwed into the mounting ears 301 of the upper mounting shell 3 and tightened, so that the mounting plate 4 is installed on the upper mounting shell 3.
[0024] Furthermore, each of the four corners inside the sealing plate 5 is connected with a sealing bolt 502, which is threaded into the mounting screw hole 403. The end of the movable column 501 away from the sealing plate 5 is rotatably connected to a rotating disk 5011. After the sealing plate 5 is inserted through the sealing bolt 502, it is screwed into the mounting screw hole 403 and tightened, so that the sealing plate 5 can be installed on the mounting plate 4. The rotating disk 5011 abuts against the end of the steering gear worm gear, cooperating with the movement of the worm gear.
[0025] The operation process of this embodiment is as follows: During operation, firstly, determine the direction of the worm gear extending out of the upper mounting shell 3. After the worm gear is positioned at the corresponding end in the upper mounting shell 3, the slots 404 on the two mounting plates 4 are engaged with the top of the lower mounting shell 1. Then, the mounting plate 4 is placed at the corresponding end of the upper mounting shell 3, and the mounting bolt 406 is inserted into the mounting plate 4. It is then screwed into the mounting ear 301 of the upper mounting shell 3 and tightened. During the installation process, the worm gear power input end passes through the limiting sleeve 402 on the mounting plate 4 and then exits through the movable opening 401. The mounting plate 4 corresponding to one end of the worm gear in the upper mounting shell 3 inserts the movable post 501 on the closed plate 5 into the movable opening 401 on the corresponding mounting plate 4 and slides it into the limiting sleeve 402. After the rotating disk 5011 at the end of the movable post 501 and the rotating disk 5011 at the end of the limiting sleeve 402 that is movably connected to the worm gear abut against each other, the worm gear and the circulating ball structure on the worm gear are installed in the upper mounting shell 3.
[0026] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0027] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A flat shell structure for an electric recirculating ball steering gear, comprising a lower mounting shell (1), a front plate (2), an upper mounting shell (3), a mounting plate (4), and a sealing plate (5), characterized in that: The top of the lower mounting shell (1) is fixed with an upper mounting shell (3). Both ends of the upper mounting shell (3) are open. Both ends of the upper mounting shell (3) are provided with mounting plates (4). On the side of the two mounting plates (4) that are far apart from each other, there is a closed plate (5). Each mounting plate (4) has a through opening (401). On the outside of the opening (401) on the side of the two mounting plates (4) that are close to each other, there is a limit sleeve (402). On the side of the two closed plates (5) that are close to each other, there is a movable column (501). The movable column (501) passes through the opening (401) and is movably connected to the limit sleeve (402). The front side of the lower mounting shell (1) is fixed with a front plate (2).
2. The flat shell structure of an electric recirculating ball steering gear according to claim 1, characterized in that: The rear part of the inner wall of the lower mounting shell (1) is fixed with a mounting sleeve (103). The upper parts of both ends of the lower mounting shell (1) are convex. The upper convex parts of both ends of the lower mounting shell (1) are symmetrically fixed with mounting screws one (101). Each corner of the front side of the lower mounting shell (1) is fixed with mounting screw two (104).
3. The flat shell structure of an electric recirculating ball steering gear according to claim 2, characterized in that: An outer fixing sleeve (201) is fixed to the center of the front side of the front plate (2). The outer fixing sleeve (201) is connected to the lower mounting shell (1). A sealing ring (202) is fixed on the inner wall of the outer fixing sleeve (201). Four mounting screws (104) are respectively set through the four corners of the front plate (2), and the part of the mounting screws (104) extending out of the front plate (2) is threadedly connected to fastening nuts (105).
4. The flat shell structure of an electric recirculating ball steering gear according to claim 1, characterized in that: The upper mounting shell (3) has a communication port (302) at the center of its bottom. The communication port (302) is connected to the lower mounting shell (1). The upper mounting shell (3) has mounting ears (301) fixed at the four corners near the end edge of its inner wall.
5. The flat shell structure of an electric recirculating ball steering gear according to claim 2, characterized in that: The mounting plate (4) has a slot (404) at the lower corner near the upper mounting shell (3). The slot (404) is movably connected to the protrusions at both ends of the lower mounting shell (1). The lower part of the mounting plate (4) is symmetrically connected to the slot (404) and has a movable hole (405). The mounting screws (101) at both ends of the lower mounting shell (1) pass through the movable hole (405) on the mounting plate (4). The part of the mounting screw (101) that extends out of the mounting plate (4) is threaded with a fastening nut (102).
6. The flat shell structure of an electric recirculating ball steering gear according to claim 2, characterized in that: The mounting plate (4) has four mounting screw holes (403) arranged in a ring array on the side away from the upper mounting shell (3). The mounting screw holes (403) are set outside the movable opening (401). The mounting plate (4) has four mounting ears (301) at the same end as the upper mounting shell (3) and mounting bolts (406) are inserted through them. The mounting bolts (406) are threaded into the mounting ears (301).
7. The flat shell structure of an electric recirculating ball steering gear according to claim 6, characterized in that: The four corners of the closed plate (5) are all connected with closed bolts (502), and the closed bolts (502) are threaded into the mounting screw holes (403). The end of the movable column (501) away from the closed plate (5) is rotatably connected to a rotating disk (5011).