A balance bar disconnect device

Abstract

The application discloses a balance bar disconnecting device, and belongs to the technical field of automobile parts, which comprises a shell, a left balance bar, a right balance bar and a disconnecting mechanism, wherein the disconnecting mechanism comprises: a first connecting part which is fixedly sleeved on the left balance bar, and a first end surface tooth is arranged on the right end surface of the first connecting part; a second connecting part which is coaxially arranged with the first connecting part and is connected with the right balance bar in an indirectly circumferential fixed axial movable manner, a second end surface tooth is arranged on the left end surface of the second connecting part, and the second end surface tooth and the first end surface tooth are matched with each other; a driving mechanism which is used for driving the second connecting part to axially move and separate from or combine with the first connecting part, so that the left balance bar and the right balance bar are disconnected or connected; and a reset spring which always acts on the second connecting part and exerts a force on the second connecting part in the opposite direction of the driving force of the driving mechanism. The balance bar disconnecting device has the advantages of simple structure, few parts, small size and low production cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile parts, in particular to a balance bar disconnecting device. BACKGROUND

[0002] The balance bar is also known as a lateral stabilizer bar, which functions to achieve balance and limit body roll during cornering. When the vehicle is turning or driving on uneven road surfaces, the body will roll, and the suspensions on both sides will not jump uniformly. The outer suspension will press against the balance bar, causing the balance bar to twist. The elastic force of the bar body will generate a torque to resist the twist, reducing the vehicle's inclination angle, thereby keeping the body as balanced as possible and playing a role in lateral stability. Although the balance bar is not eye-catching, it plays an invaluable role in the safety, stability, and ride comfort of the vehicle.

[0003] However, for off-road vehicles, when passing through extreme off-road surfaces such as artillery shell craters, the two sides of the wheels will have a large difference in height. At this time, due to the limitation of the balance bar on the relative up-and-down travel of the suspension on both sides, the wheels will be suspended, which is not conducive to the vehicle's off-road obstacle crossing and escape. Therefore, disconnecting the balance bar function is particularly important. When the balance bar is disconnected, the suspension travel of the wheels on both sides is maximized, allowing all four wheels to touch the ground simultaneously, enabling the vehicle to escape. When returning to normal driving surfaces, the balance bar disconnecting function can be turned off, and the vehicle returns to normal driving conditions.

[0004] Chinese patent CN202221948419.6 discloses a balance bar disconnecting device, which includes a housing, left and right balance bars, and an external drive motor as a driving force. The housing has a disconnecting mechanism inside. The disconnecting mechanism includes a gear sleeve, a screw rod connected to the drive motor, and a shift fork fixedly connected to the screw rod. The outer surface of the gear sleeve is provided with a limiting groove, and the shift fork is fixedly connected to the gear sleeve through the limiting groove. The left and right balance bars are connected by a connecting part, which includes a left tooth ring and a right tooth ring fixedly connected to the left and right balance bars, respectively. The drive motor drives the screw rod, which moves the shift fork, thereby moving the gear sleeve between the left and right tooth rings to disconnect or connect the balance bar. This balance bar disconnecting device can automatically disconnect or connect for different road conditions, improving the vehicle's passability. However, the structure is complex, the volume is large, there are many parts, and the production cost is high. Therefore, there is a need for a balance bar disconnecting device with a simple structure, small volume, and low production cost. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the above problems and provide a balance bar disconnecting device with a simple structure, small volume, and low production cost.

[0006] The technical solution of the present application is:

[0007] A balance bar disconnection device includes a housing, a left balance bar, a right balance bar, and a disconnection mechanism disposed within the housing. The left and right balance bars are rotatably connected to the housing via bearings. The disconnection mechanism comprises:

[0008] The first connecting component is fixedly sleeved on the left balance bar, and a ring of first end face teeth is provided on the right end face of the first connecting component;

[0009] The second connecting component is coaxially arranged with the first connecting component and is at least indirectly connected to the right balance bar in a manner that is circumferentially fixed but axially movable. The left end face of the second connecting component is provided with a ring of second end face teeth, which cooperate with the first end face teeth.

[0010] A drive mechanism is used to drive the second connecting component to move axially and separate or connect with the first connecting component, causing the left balance bar to disconnect or connect with the right balance bar;

[0011] The return spring always acts on the second connecting component, applying a force to it in the opposite direction to the driving force of the drive mechanism.

[0012] The balance bar is disconnected and connected by using an end-face tooth clutch structure, which eliminates the need for a toothed sleeve and a shift fork. The structure is simple, with fewer parts, reducing the overall size of the device, lowering the difficulty of manufacturing and assembly, and thus reducing production costs.

[0013] As an optimization, in the aforementioned balance bar disconnection device, the driving mechanism includes a push rod and an electromagnetic thrust structure coaxially arranged with the balance bar. An axial through-hole is provided on the first connecting component, through which the push rod passes. The right end of the push rod abuts against the left end face of the second connecting component. The left end of the push rod is at least indirectly connected to the electromagnetic thrust structure. When the electromagnetic thrust structure is energized, it drives the push rod to push the second connecting component axially to the right, separating it from the first connecting component, thus disconnecting the left and right balance bars. The return spring is disposed within the axial space between the second connecting component and the housing. The left end of the return spring abuts against the second connecting component, and the right end abuts against the housing. The return spring always acts on the second connecting component, causing it to tend towards the first connecting component. The driving mechanism uses an electromagnetic thrust structure, coaxially arranged with the balance bar, which saves space. Furthermore, the design of the through-hole and push rod positions improves the compactness of the device, thereby reducing the overall size of the device.

[0014] Further, in the above-mentioned balance rod disconnecting device, the electromagnetic thrust structure comprises a bracket, an electromagnetic coil and a magnetic sliding sleeve, the bracket is fixed with the housing and coaxially arranged with the first connecting component, the electromagnetic coil is arranged in the bracket, the magnetic sliding sleeve is arranged axially movably on the radially inner side of the electromagnetic coil, the left end of the top rod is indirectly connected to the right end of the magnetic sliding sleeve, and the electromagnetic coil is energized to cause the magnetic sliding sleeve to move axially to the right to push the top rod. Such an electromagnetic thrust structure not only has small volume and large thrust, but also has fast response speed and flexible installation, and can realize quick disconnection and connection of the balance rod.

[0015] Further, in the above-mentioned balance rod disconnecting device, the bracket comprises an outer ring bracket and an inner support sleeve fixedly arranged on the radially inner side of the outer ring bracket, the electromagnetic coil is arranged in the outer ring bracket, and the magnetic sliding sleeve is arranged axially movably between the outer ring bracket and the inner support sleeve.

[0016] Further, in the above-mentioned balance rod disconnecting device, the electromagnetic thrust structure further comprises a thrust movable sleeve, the thrust movable sleeve is arranged axially movably between the inner support sleeve and the first connecting component, the right end surface of the thrust movable sleeve abuts against the left end of the top rod, the outer peripheral surface of the thrust movable sleeve extends radially outward to form a ring-shaped convex ring, and the right end of the magnetic sliding sleeve abuts against the convex ring.

[0017] As an optimization, in the above-mentioned balance rod disconnecting device, the first connecting component comprises a first shaft sleeve portion and a gear hub portion fixedly connected to the right end of the first shaft sleeve portion, the first end surface gear is arranged on the right end surface of the gear hub portion, and the first shaft sleeve portion is fixedly sleeved on the left balance rod through spline connection; a second shaft sleeve portion is further arranged between the second connecting component and the right balance rod, the second shaft sleeve portion is fixedly sleeved on the right balance rod through spline connection, and the second connecting component is fixedly sleeved axially movably on the second shaft sleeve portion; the axial inner ends of the first shaft sleeve portion and the second shaft sleeve portion are closed, and the inner end surfaces thereof are respectively provided with a recess and a protrusion which can be rotatably and abutly matched. This scheme improves the concentricity of the left balance rod and the right balance rod through the abutment of the first shaft sleeve portion and the second shaft sleeve portion, avoids positional deviation of the left and right balance rods during disconnection or connection, and ensures the stability and reliability of the device.

[0018] As an optimization, in the aforementioned balance bar disconnect device, the left end of the first bushing extends axially outward to the left mounting hole of the housing, and the left end is sealed to the left mounting hole of the housing via an oil seal. The bearing is disposed between the first bushing and the housing. The right end of the second bushing extends axially outward to the right mounting hole of the housing, and the right end is sealed to the right mounting hole of the housing via an oil seal. The bearing is disposed between the second bushing and the housing. Through the extension of the first and second bushings and the design of the oil seal, a sealed cavity is formed between the first bushing, the second bushing, the oil seal, and the housing, creating a self-sealing disconnect device. Before being installed on the balance bar, this protects the inside of the device from contamination by debris and allows for the addition of lubricating oil, which acts as a rust preventer, preventing corrosion of the disconnect device during storage and transportation.

[0019] As an optimization, in the aforementioned balance bar disconnecting device, the through hole of the first connecting component is located at the position corresponding to the tooth groove of the first end face tooth of the first connecting component. The push rod passes through the through hole, and its right end abuts against the tooth of the second end face tooth of the second connecting component. The through hole is configured as a stepped hole, and the push rod is configured as a variable diameter rod that cooperates with the stepped hole. The stepped hole and the variable diameter rod cooperate to limit the limit position of the push rod's rightward movement. The push rod passing through the tooth groove at the corresponding position, and the design of the stepped hole and the variable diameter rod effectively limiting the limit position of the push rod's rightward movement, prevent the push rod from getting stuck in the tooth groove of the second end face tooth after it pushes the second connecting component to the right. This will not affect the relative rotation of the left and right balance bars, thereby ensuring the normal operation of the disconnecting device.

[0020] Furthermore, in the aforementioned balance bar disconnecting device, the number of top rods is at least three, evenly distributed along the circumference. The presence of three or more top rods improves the load-bearing capacity of the balance bar disconnecting device and ensures the stability of the disconnection and connection processes.

[0021] The beneficial effects of this invention are:

[0022] 1. By adopting an end-face tooth clutch structure and using an electromagnetic thrust structure as the drive mechanism, the balance bar can be disconnected and connected. This not only results in a simple and compact structure with fewer parts, reducing the overall size of the device, but also reduces manufacturing and assembly difficulty, thereby lowering production costs.

[0023] 2. By connecting the first and second bushing parts, the concentricity of the left and right balance bars is improved, preventing positional shifts when the left and right balance bars are disconnected or connected, thus ensuring the stability and reliability of the device.

[0024] 3. The disconnecting device is designed as a self-sealing structure, which can protect the inside of the device from impurities and add lubricating oil before being installed on the balance bar, so that the device will not rust during storage and transportation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a sectional view of an embodiment of the present application.

[0026] Figure 2 is a perspective view of the first connecting part and the second connecting part in a separated state in an embodiment of the present application.

[0027] Figure 3 is a perspective view of the first connecting part and the top rod in an embodiment of the present application.

[0028] Figure 4 is a perspective view of the second connecting part and the second shaft sleeve part in an embodiment of the present application.

[0029] In the figure, 1 is a housing, 11 is an oil seal, 12 is a bearing, 21 is a left balance bar, 22 is a right balance bar, 3 is a first connecting part, 31 is a first end face tooth, 311 is a tooth groove, 32 is a first shaft sleeve part, 321 is a groove, 33 is a tooth hub part, 34 is a through hole, 4 is a second connecting part, 41 is a second end face tooth, 411 is a tooth, 5 is a return spring, 6 is a second shaft sleeve part, 61 is a protrusion, 71 is a top rod, 72 is an electromagnetic coil, 73 is a magnetic sliding sleeve, 74 is a thrust movable sleeve, 75 is an outer ring support, and 76 is an inner support sleeve. DETAILED DESCRIPTION

[0030] The present application will be further described in conjunction with the drawings and embodiments:

[0031] In the description of the present application, it should be understood that the terms "left", "right", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, therefore it cannot be understood as a limitation of the present application.

[0032] As Figure 1As shown, the balance bar disconnecting device provided by the embodiment includes a housing 1, a left balance bar 21, a right balance bar 22 and a disconnecting mechanism arranged in the housing 1. The left balance bar 21 and the right balance bar 22 are coaxially arranged and are rotatably connected to the housing 1 through bearings 12 respectively. The disconnecting mechanism includes a first connecting component 3, a second connecting component 4, a driving mechanism and a return spring 5. The first connecting component 3 is connected to the left balance bar 21, the second connecting component 4 is connected to the right balance bar 22, and the driving mechanism is used to drive the second connecting component 4 to separate from or combine with the first connecting component 3, so as to disconnect or connect the left balance bar 21 and the right balance bar 22. The specific structure of the disconnecting mechanism is further described below.

[0033] As shown in the drawings, Figures 1 to 3 The first connecting component 3 is fixedly sleeved on the left balance bar 21, and a circle of first end surface teeth 31 is arranged on the right end surface of the first connecting component 3. In the embodiment, the first connecting component 3 includes a first shaft sleeve part 32 and a tooth hub part 33 fixedly connected to the right end of the first shaft sleeve part 32, the first end surface teeth 31 are arranged on the right end surface of the tooth hub part 33, and the first shaft sleeve part 32 is fixedly sleeved on the left balance bar 21 through spline connection.

[0034] As shown in the drawings, Figure 1 and Figure 2 The second connecting component 4 is coaxially arranged with the first connecting component 3 and is connected to the right balance bar 22 in a circumferentially fixed and axially movable manner at least indirectly. A circle of second end surface teeth 41 is arranged on the left end surface of the second connecting component 4, and the second end surface teeth 41 are matched with the first end surface teeth 31. In the embodiment, a second shaft sleeve part 6 is arranged between the second connecting component 4 and the right balance bar 22, the second shaft sleeve part 6 is fixedly sleeved on the right balance bar 22 through spline connection, and the second connecting component 4 is circumferentially fixed and axially movable on the second shaft sleeve part 6, so that the second connecting component 4 is circumferentially fixed and axially movable relative to the right balance bar 22.

[0035] As shown in the drawings, Figure 1 In order to improve the concentricity of the left balance bar 21 and the right balance bar 22 and avoid position deviation of the left and right balance bars during disconnection or connection, the axial inner ends of the first shaft sleeve part 32 and the second shaft sleeve part 6 are closed, and recesses 321 and protrusions 61 that can be rotatably butted and matched are arranged on the inner end surfaces of the first shaft sleeve part 32 and the second shaft sleeve part 6 respectively.

[0036] In order to realize the self-sealing of the disconnecting device, the left end of the first shaft sleeve part 32 extends axially outward to the left mounting hole of the housing 1, and the left end is connected in a sealed manner between the oil seal 11 and the left mounting hole of the housing 1, and the bearing 12 is arranged between the first shaft sleeve part 32 and the housing 1; the right end of the second shaft sleeve part 6 extends axially outward to the right mounting hole of the housing 1, and the right end is connected in a sealed manner between the oil seal 11 and the right mounting hole of the housing 1, and the bearing 12 is arranged between the second shaft sleeve part 6 and the housing 1. Through the extension of the first shaft sleeve part 32 and the second shaft sleeve part 6 and the design of the oil seal 11, a sealed cavity is formed between the first shaft sleeve part 32, the second shaft sleeve part 6, the oil seal 11 and the housing 1.

[0037] As shown in Figures 1-4 The driving mechanism drives the second connecting part 4 to move axially to separate or combine with the first connecting part 3, which includes a jack 71 and an electromagnetic thrust structure. An axial through hole 34 is formed in the first connecting part 3, the jack 71 passes through the first connecting part 3 through the through hole 34, the right end of the jack 71 abuts against the left end face of the second connecting part 4, and the left end of the jack 71 is at least indirectly connected to the electromagnetic thrust structure. The electromagnetic thrust structure is energized to drive the jack 71 to push the second connecting part 4 to move axially to the right to separate from the first connecting part 3, so that the left balance rod 21 and the right balance rod 22 are disconnected. In the embodiment, the through hole 34 of the first connecting part 3 is formed in the position corresponding to the tooth groove 311 of the first end face tooth 31 of the first connecting part 3, the jack 71 passes through the through hole 34, and the right end of the jack 71 abuts against the tooth 411 of the second end face tooth 41 of the second connecting part 4. At least two jacks 71 abut against the tooth 411, and the angle of the center angle corresponding to the abutment is greater than the angle range of the balance rod rotation; at the same time, the through hole 34 is provided as a stepped hole, and the jack 71 is provided as a variable diameter rod matched with the stepped hole, and the stepped hole and the variable diameter rod are matched to limit the limit position of the right movement of the jack 71. The number of jacks 71 is at least three, which are distributed along the circumference. In the embodiment, the number of jacks 71 is four.

[0038] As shown in Figure 1As shown, the electromagnetic thrust structure specifically comprises a bracket, an electromagnetic coil 72, a magnetic sliding sleeve 73 and a thrust movable sleeve 74. The bracket is fixed with the shell 1 and coaxially arranged with the first connecting component 3, and the bracket comprises an outer ring bracket 75 and an inner support sleeve 76 fixedly sleeved on the radially inner side of the outer ring bracket 75, the electromagnetic coil 72 is arranged in the outer ring bracket 75, the magnetic sliding sleeve 73 is arranged between the outer ring bracket 75 and the inner support sleeve 76 in an axially movable manner and located radially inward of the electromagnetic coil 72, the thrust movable sleeve 74 is arranged between the inner support sleeve 76 and the first connecting component 3 in an axially movable manner, the right end surface of the thrust movable sleeve 74 abuts against the left end of the top rod 71, the outer circumferential surface of the thrust movable sleeve 74 extends radially outward to form a ring-shaped convex ring, the right end of the magnetic sliding sleeve 73 abuts against the convex ring, and the electromagnetic coil 72 is energized to cause the magnetic sliding sleeve 73 to move axially to the right to drive the thrust movable sleeve 74, so as to push the top rod 71 to separate the second connecting component 4 from the first connecting component 3.

[0039] The reset spring 5 always acts on the second connecting component 4 to apply a force in the opposite direction of the driving force of the driving mechanism. In the embodiment, the reset spring 5 is arranged in the axial space between the second connecting component 4 and the shell 1, the left end of the reset spring 5 abuts against the second connecting component 4, and the right end abuts against the shell 1. The reset spring 5 always acts on the second connecting component 4 to make it tend to be close to the first connecting component 3.

[0040] The working principle of the present application is as follows:

[0041] When the vehicle is running on normal road surface, the electromagnetic coil 72 is not energized, the second connecting component 4 is kept engaged with the first connecting component 3 under the action of the reset spring 5, and the left and right balance rods are in the connected state;

[0042] When the vehicle passes through a shell crater, the electromagnetic coil 72 is energized to cause the magnetic sliding sleeve 73 to move axially to the right to drive the thrust movable sleeve 74 and the top rod 71, so that the top rod 71 pushes the second connecting component 4 to move axially to the right to separate from the first connecting component 3 against the force of the reset spring 5, so as to disconnect the left balance rod 21 from the right balance rod 22, thereby enabling the left and right balance rods to rotate relative to each other, and the left and right wheels are simultaneously grounded, so that the vehicle can escape from the shell crater;

[0043] When the vehicle returns to the normal road surface, the electromagnetic coil 72 is de-energized, and the second connecting component 4 moves axially to the left under the action of the reset spring 5 to recombine with the first connecting component 3, and the left and right balance rods are reconnected.

[0044] It can be understood that, for those skilled in the art, other various corresponding changes and modifications can be made according to the technical concept of the present application, and all these changes and modifications shall belong to the protection scope of the claims of the present application.

Claims

1. A balance bar disconnecting device comprising a housing, a left balance bar, a right balance bar and a disconnecting mechanism arranged in the housing, the left balance bar and the right balance bar are respectively rotatably connected with the housing through bearings, characterized in that: The disconnecting mechanism comprises: A first connecting component is fixedly sleeved on the left balance bar, and a first end surface tooth is arranged on the right end surface of the first connecting component; A second connecting component is coaxially arranged with the first connecting component, and is at least indirectly connected with the right balance bar in a circumferential fixed and axial movable manner. A second end surface tooth is arranged on the left end surface of the second connecting component, and the second end surface tooth cooperates with the first end surface tooth; A driving mechanism is used to drive the second connecting component to axially move away from or combine with the first connecting component, so as to disconnect or connect the left balance bar and the right balance bar; A reset spring always acts on the second connecting component and applies a force in the opposite direction of the driving force of the driving mechanism to the second connecting component; The driving mechanism comprises a top rod and an electromagnetic thrust structure coaxially arranged with the balance bar. An axial through hole is arranged on the first connecting component. The top rod passes through the first connecting component through the through hole. The right end of the top rod abuts against the left end surface of the second connecting component. The left end of the top rod is at least indirectly connected to the electromagnetic thrust structure. The electromagnetic thrust structure is energized to drive the top rod to push the second connecting component to axially move rightward away from the first connecting component, so as to disconnect the left balance bar and the right balance bar. The reset spring is arranged in the axial space between the second connecting component and the housing. The left end of the reset spring abuts against the second connecting component, and the right end of the reset spring abuts against the housing. The reset spring always acts on the second connecting component to make the second connecting component tend to be close to the first connecting component.

2. A balance bar disconnect device according to claim 1, wherein: The electromagnetic thrust structure comprises a bracket, an electromagnetic coil and a magnetic sliding sleeve. The bracket is fixed with the housing and coaxially arranged with the first connecting component. The electromagnetic coil is arranged in the bracket. The magnetic sliding sleeve is arranged on the radially inner side of the electromagnetic coil in an axially movable manner. The left end of the top rod is at least indirectly connected to the right end of the magnetic sliding sleeve. The electromagnetic coil is energized to drive the magnetic sliding sleeve to axially move rightward to push the top rod.

3. A balance bar disconnect device according to claim 2, wherein: The bracket comprises an outer ring bracket and an inner support sleeve fixedly sleeved on the radially inner side of the outer ring bracket. The electromagnetic coil is arranged in the outer ring bracket. The magnetic sliding sleeve is arranged between the outer ring bracket and the inner support sleeve in an axially movable manner.

4. A balance bar disconnect device according to claim 3, wherein: The electromagnetic thrust structure further comprises a thrust movable sleeve. The thrust movable sleeve is axially movably sleeved between the inner support sleeve and the first connecting component. The right end surface of the thrust movable sleeve abuts against the left end of the top rod. The outer peripheral surface of the thrust movable sleeve radially extends outward to form a convex ring. The right end of the magnetic sliding sleeve abuts against the convex ring.

5. A balance bar disconnect device according to claim 1 or 2 or 3 or 4, characterised in that: The first connecting component comprises a first shaft sleeve part and a toothed hub part fixedly connected to the right end of the first shaft sleeve part. The first end surface tooth is arranged on the right end surface of the toothed hub part. The first shaft sleeve part is fixedly sleeved on the left balance bar through spline connection. A second shaft sleeve part is further arranged between the second connecting component and the right balance bar. The second shaft sleeve part is fixedly sleeved on the right balance bar through spline connection. The second connecting component is circumferentially fixed and axially movably sleeved on the second shaft sleeve part. The axial inner ends of the first shaft sleeve part and the second shaft sleeve part are closed, and the inner end surfaces of the two are respectively provided with a recess and a protrusion which can be rotatably and dockingly cooperated.

6. A balance bar disconnect device according to claim 5, wherein: The left end of the first shaft sleeve part extends axially outward to the left mounting hole of the shell, and the left end is connected in a sealed manner between the oil seal and the left mounting hole of the shell, and the bearing is arranged between the first shaft sleeve part and the shell; the right end of the second shaft sleeve part extends axially outward to the right mounting hole of the shell, and the right end is connected in a sealed manner between the oil seal and the right mounting hole of the shell, and the bearing is arranged between the second shaft sleeve part and the shell.

7. A balance bar disconnect device according to claim 1, wherein: The through hole of the first connecting part is arranged at a position corresponding to the tooth groove of the first end surface tooth of the first connecting part, the top rod passes through the through hole, and the right end of the top rod abuts against the tooth of the second end surface tooth of the second connecting part; the through hole is a stepped hole, the top rod is a variable-diameter rod matched with the stepped hole, and the stepped hole and the variable-diameter rod are matched to limit the limit position of the right movement of the top rod.

8. A balance bar disconnect device according to claim 1, wherein: The number of the top rods is at least 3, and the top rods are distributed along the circumference.

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