A steering gear assembly with steering limit

Abstract

The utility model relates to direction machine assembly steering limiting technical field, and disclose a kind of direction machine assembly with steering limiting, including shell, the right side inner surface of shell is fixedly connected with support shell, the inner wall of support shell is rotatably connected with worm, the inner wall of shell is slidably connected with sliding plate, the right surface of sliding plate is fixedly connected with tooth, the tooth is engaged with worm, the inner wall of shell is provided with wear-preventing component in both sides. The direction machine assembly with steering limiting, through linkage assembly, when adjusting the position of the ejector rod, only need to rotate the two-way screw rod, the two-way screw rod rotation will drive the connecting plate and support plate to move together, so that the top plate of both sides is synchronized to extend, avoid the problem that steering wheel left rotation and right rotation are inconsistent caused by rotating single adjusting screw rod, stabilizing block can stably support the side of support plate, so as to realize double fulcrum positioning, enhance the stability of device.

Description

Technical Field

[0001] This utility model relates to the field of steering limit technology for steering gear assemblies, specifically a steering gear assembly with steering limit. Background Technology

[0002] The steering gear assembly is the core component of a car's steering system. Its main function is to amplify the steering force transmitted by the driver through the steering wheel and change the direction of force transmission, converting the rotation of the steering wheel into the steering action of the wheels, allowing the vehicle to turn according to the driver's wishes. It can also coordinate the steering direction to ensure that the steering wheel rotation direction is consistent with the wheel steering direction, making driving more precise and effortless. It is a key device to ensure the vehicle's steering flexibility and safety.

[0003] According to the publication number CN220743143 U, an improved structure of a steering limit device for a steering gear assembly, in the above application: 1. The sector gear 42a is rotatably mounted on the rotating shaft 43a and has only one constraint pair. Therefore, the machining accuracy of the sector gear 42a is required to be high, otherwise it will affect the fit clearance between the two side walls 422a of the sector gear 42a and the adjusting bolt 441a; 2. General machining cannot produce a sector gear 42a of sufficient thickness, resulting in the sector gear 42a being too thin and affecting its strength.

[0004] However, in actual use, the above-mentioned device restricts the slider by using two adjusting bolts to limit the rotation of the worm gear and thus achieve the limit function. In this process, the two adjusting bolts are adjusted separately, and the extension of the two bolts is prone to unevenness during the adjustment process, resulting in a difference in the range of rotation when the operator turns the steering wheel to the left and to the right. In view of this, we propose a steering gear assembly with steering limit. Utility Model Content

[0005] The purpose of this invention is to provide a steering gear assembly with a steering limit to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a steering gear assembly with steering limit, comprising a housing, a supporting outer shell fixedly connected to the inner right side of the housing, a worm gear rotatably connected to the inner wall of the supporting outer shell, a sliding plate slidably connected to the inner wall of the housing, teeth fixedly connected to the right surface of the sliding plate, the teeth meshing with the worm gear, wear-resistant components provided on both the upper and lower sides of the inner wall of the housing, and a linkage component provided on the left surface of the housing; The linkage assembly includes a fixed plate, a bidirectional screw is rotatably connected to the inner wall of the fixed plate, knobs are fixedly connected to both the upper and lower sides of the bidirectional screw, a connecting plate is threaded to the outer wall of the bidirectional screw, a support plate is fixedly connected to the right surface of the connecting plate, a top rod is fixedly connected to the side of the support plate near the housing, the outer wall of the top rod penetrates and is slidably connected to the inner wall of the housing, and a stabilizing block is fixedly connected to the right surface of the support plate, the outer wall of the stabilizing block is slidably connected to the inner wall of the housing.

[0007] Preferably, the stabilizing block is T-shaped, and the sliding plate is T-shaped.

[0008] Preferably, the top rods are configured in multiple groups, and the multiple groups of top rods are evenly distributed along the lower surface of the support plate.

[0009] Preferably, the wear-resistant component includes a groove formed on the inner surface of the housing, and a slider is slidably connected to the inner wall of the groove, the slider being configured as an I-beam.

[0010] Preferably, a swing rod is hinged to the lower surface of the slider, and a buffer plate is hinged to the side of the swing rod away from the slider.

[0011] Preferably, the buffer plate and the housing are elastically connected by a return spring, the return spring and the top rod are in one-to-one correspondence, and the buffer plate is configured as T-shaped.

[0012] Preferably, the swing rod, slider, and slide groove are configured in multiple sets, and the multiple sets of swing rod, slider, and slide groove are mirrored with the center line of the buffer plate as the axis of symmetry.

[0013] Compared with the prior art, the present invention provides a steering gear assembly with steering limit, which has the following advantages: 1. This steering gear assembly with steering limit, through a linkage component, allows the device to adjust the position of the push rod by simply rotating the bidirectional screw. The rotation of the bidirectional screw will drive the connecting plate and the support plate to move together, thereby causing the top plates on the upper and lower sides to extend synchronously. This avoids the problem of inconsistent left and right rotation of the steering wheel caused by rotating a single adjusting screw. The stabilizing block can stably support one side of the support plate, thereby achieving dual-pivot positioning and enhancing the stability of the device.

[0014] 2. The steering gear assembly with steering limiter, through the wear-resistant component, prevents direct contact between the sliding plate and the push rod. The sliding plate will first impact the buffer plate, and the buffer plate will push the swing rods on both sides to move during the displacement process, thereby causing the slider to move inside the slide groove. At this time, the friction between the slider and the slide groove will transfer the force to the housing, thereby preventing the impact force from being completely borne by the threads of the double-ended screw, and enhancing the wear resistance of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the linkage component of this utility model; Figure 3 This is a cross-sectional schematic diagram of the linkage component of this utility model; Figure 4 This is a schematic diagram of the wear-resistant component of this utility model; Figure 5 This is a partial structural diagram of the wear-resistant component of this utility model.

[0016] In the diagram: 1. Housing; 2. Supporting outer shell; 3. Worm gear; 4. Linkage assembly; 5. Sliding plate; 6. Gear; 7. Wear-resistant assembly; 41. Fixing plate; 42. Bidirectional screw; 43. Knob; 44. Connecting plate; 45. Support plate; 46. Stabilizing block; 47. Top rod; 71. Slider; 72. Swing rod; 73. Buffer plate; 74. Return spring; 75. Slide groove. Detailed Implementation

[0017] like Figures 1-5 As shown, this utility model provides a technical solution: a steering gear assembly with steering limit, including a housing 1 for supporting the overall device, a supporting outer shell 2 for supporting the rotation of a worm gear 3 and fixing the housing 1 fixedly connected to the inner surface of the right side of the housing 1, a worm gear 3 for following the rotation of the steering wheel and pushing the teeth 6 by its own rotation rotatably connected to the inner wall of the supporting outer shell 2, a sliding plate 5 for contacting the push rod 47 to limit the worm gear 3 slidably connected to the inner wall of the housing 1, a tooth 6 for being subjected to the thrust generated when the worm gear 3 rotates, the tooth 6 meshing with the worm gear 3, wear-resistant components 7 for dispersing the force of the bidirectional screw 42 to the housing 1 on both the upper and lower sides of the inner wall of the housing 1, and a linkage component 4 for synchronizing the movement of the push rods 47 on the upper and lower sides on the left surface of the housing 1; The linkage assembly 4 includes a fixed plate 41 for supporting the rotation of the bidirectional screw 42. The inner wall of the fixed plate 41 is rotatably connected to the bidirectional screw 42, which drives the connecting plates 44 on the upper and lower sides to move synchronously towards the center. The upper and lower sides of the bidirectional screw 42 are fixedly connected to a rotary knob 43 for easy operation. The outer wall of the bidirectional screw 42 is threadedly connected to a connecting plate 44 for following the rotational displacement of the bidirectional screw 42 and driving the support plate 45 to move. The right surface of the connecting plate 44 is fixedly connected to a support plate 45 for supporting a top rod 47. The side of the support plate 45 near the housing 1 is fixedly connected to a top rod 47 for restricting the movement of the sliding plate 5. The outer wall of the top rod 47 penetrates and is slidably connected to the inner wall of the housing 1. The right surface of the support plate 45 is fixedly connected to a stabilizing block 46 for providing stable support to the side of the support plate 45 away from the bidirectional screw 42. The outer wall of the stabilizing block 46 is slidably connected to the inner wall of the housing 1.

[0018] In one embodiment of this utility model, the stabilizing block 46 is T-shaped to make the connection between the stabilizing block 46 and the inner wall of the housing 1 more stable. The sliding plate 5 is T-shaped to make the movement of the sliding plate 5 more stable. The top rod 47 is set in multiple groups, and the multiple groups of top rods 47 are evenly distributed along the lower surface of the support plate 45. The anti-wear component 7 includes a groove 75 for accommodating the sliding of the slider 71. The groove 75 is opened on the inner surface of the housing 1. The inner wall of the groove 75 is slidably connected to the slider 71 for sliding in the groove 75 to generate friction. The slider 71 is set in an I-shape to make the movement of the slider 71 more stable.

[0019] In an embodiment of this utility model, the lower surface of the slider 71 is hinged with a swing rod 72 for sliding the slider 71 when the buffer plate 73 is subjected to force. The side of the swing rod 72 away from the slider 71 is hinged with a buffer plate 73 for absorbing the impact of the sliding plate 5. The buffer plate 73 and the housing 1 are elastically connected by a return spring 74 for pushing the buffer plate 73 back to its original position after displacement. The return spring 74 corresponds one-to-one with the top rod 47. The buffer plate 73 is T-shaped so that the cross-sectional shape of the buffer plate 73 matches that of the sliding plate 5. The swing rod 72, slider 71 and slide groove 75 are arranged in multiple sets, and the multiple sets of the swing rod 72, slider 71 and slide groove 75 are mirrored about the center line of the buffer plate 73 as the axis of symmetry.

[0020] In this invention, during use, when the operator turns the steering wheel, the worm gear 3 rotates, pushing the teeth 6 and thus moving the sliding plate 5. When the operator turns the steering wheel to its maximum travel, the sliding plate 5 gradually presses against the buffer plate 73. At this time, the return spring 74 undergoes elastic deformation. Then, the buffer plate 73 moves, pushing the swing rod 72 outwards. The swing rod 72 deflects, simultaneously pushing the slider 71 to move inside the groove 75. During this movement, the slider 71 rubs against the inner wall of the groove 75, reducing the impact force and thus reducing the force on the threads of the bidirectional screw 42, thereby reducing wear on the bidirectional screw 42. As the steering wheel rotates and the sliding plate 5 gradually presses against the buffer plate 73, the operator will gradually feel an increase in resistance when turning the steering wheel, making the direction clearer for the operator. As the disc rotates to its maximum stroke, the force is reduced. Due to the different conditions of different vehicles, the connecting plates 44 on both sides can be moved synchronously towards the center by rotating the bidirectional screw 42. During the movement of the connecting plate 44, the support plate 45 will move, and the support plate 45 will in turn move the push rod 47, thereby limiting the maximum number of rotations of the worm gear 3. The stabilizing block 46 will prevent the support plate 45 from rotating during its movement, and at the same time, it will support the side of the support plate 45 away from the bidirectional screw 42 to prevent one side from tilting up and causing deviation in the limiting result. Multiple sets of push rods 47 are evenly distributed on the support plate 45, which can evenly distribute the impact force of the sliding plate 5 to each support plate 45, avoiding accelerated wear of a single push rod 47 due to excessive local force, so that the wear degree of individual parts is distributed, thereby extending the maintenance interval.

[0021] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A steering gear assembly with a steering limiter, comprising a housing (1), characterized in that: A supporting shell (2) is fixedly connected to the inner right side surface of the housing (1). A worm gear (3) is rotatably connected to the inner wall of the supporting shell (2). A sliding plate (5) is slidably connected to the inner wall of the housing (1). A tooth (6) is fixedly connected to the right surface of the sliding plate (5). The tooth (6) meshes with the worm gear (3). Anti-wear components (7) are provided on both the upper and lower sides of the inner wall of the housing (1). A linkage component (4) is provided on the left surface of the housing (1). The linkage component (4) includes a fixed plate (41), a bidirectional screw (42) is rotatably connected to the inner wall of the fixed plate (41), a knob (43) is fixedly connected to both the upper and lower sides of the bidirectional screw (42), a connecting plate (44) is threadedly connected to the outer wall of the bidirectional screw (42), a support plate (45) is fixedly connected to the right surface of the connecting plate (44), a top rod (47) is fixedly connected to the side of the support plate (45) near the housing (1), the outer wall of the top rod (47) penetrates and is slidably connected to the inner wall of the housing (1), a stabilizing block (46) is fixedly connected to the right surface of the support plate (45), and the outer wall of the stabilizing block (46) is slidably connected to the inner wall of the housing (1).

2. A steering gear assembly with a steering limiter according to claim 1, characterized in that: The stabilizing block (46) is T-shaped, and the sliding plate (5) is T-shaped.

3. A steering gear assembly with a steering limiter according to claim 1, characterized in that: The top rod (47) is configured in multiple groups, and the multiple groups of top rods (47) are evenly distributed along the lower surface of the support plate (45).

4. A steering gear assembly with a steering limiter according to claim 1, characterized in that: The wear-resistant component (7) includes a groove (75) which is formed on the inner surface of the housing (1). A slider (71) is slidably connected to the inner wall of the groove (75), and the slider (71) is configured as an I-shaped component.

5. A steering gear assembly with a steering limiter according to claim 4, characterized in that: A swing rod (72) is hinged to the lower surface of the slider (71), and a buffer plate (73) is hinged to the side of the swing rod (72) away from the slider (71).

6. A steering gear assembly with a steering limiter according to claim 5, characterized in that: The buffer plate (73) is elastically connected to the housing (1) by a return spring (74), and the return spring (74) corresponds one-to-one with the top rod (47). The buffer plate (73) is T-shaped.

7. A steering gear assembly with a steering limiter according to claim 6, characterized in that: The swing rod (72), slider (71), and slide (75) are configured in multiple sets, and the multiple sets of the swing rod (72), slider (71), and slide (75) are mirrored with the center line of the buffer plate (73) as the axis of symmetry.

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