Gear selecting device and gear selecting and shifting system
By introducing a limit component into the gear selector of the AMT transmission, the problem of inaccurate shift fork positioning was solved, resulting in higher shifting accuracy and driver operating comfort.
Patent Information
- Application Number
- CN202520682273.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-11
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-04-11
AI Technical Summary
The gear selector of an AMT transmission is susceptible to electromagnetic interference, which can lead to poor positioning accuracy of the shift fork and seriously affect the shifting performance.
A limiting component is introduced into the gear selection device. The limiting component is driven by a drive component to move to the position of the gear selection guide block, so that the shift fork abuts against the limiting component, thereby preventing the shift fork from being offset and improving the shifting accuracy.
By introducing a limit component, the shift fork is ensured to move accurately to the position of the gear selector guide block, avoiding wear and improving shifting accuracy and driver comfort.
Smart Images
Figure CN223908768U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle gear selection, and in particular to a gear selection device and a gear selection system. BACKGROUND
[0002] The AMT gearbox (Automatic Mechanical Transmission) is an electrically controlled mechanical automatic gearbox. It is based on a traditional gear type mechanical transmission, and adds a control system and a gear selection and shifting execution mechanism to replace the driver to complete the gear selection and shifting of the transmission and other operations, and finally realizes the automation of the shifting process.
[0003] In related technologies, the AMT gearbox usually includes a gear selection device and a gear shifting device. The gear selection device includes a control unit and a shift fork. The control unit sends a control instruction to drive the shift fork to reciprocate, determines the gear selection position, and controls the shift fork to swing through the gear shifting device to realize gear shifting.
[0004] However, the gear selection device is susceptible to electromagnetic interference, resulting in poor positioning accuracy of the shift fork, which seriously affects the gear shifting effect. Invention content
[0005] The embodiments of the present application provide a gear selection device and a gear selection system to overcome the problem that the gear selection device in the prior art is susceptible to electromagnetic interference, resulting in poor positioning accuracy of the shift fork, which seriously affects the gear shifting effect.
[0006] In a first aspect, the embodiments of the present application provide a gear selection device, which includes: a gear selection mechanism, the gear selection mechanism is arranged on a gearbox body, the gear selection mechanism includes a shift fork and an adjusting assembly connected to the shift fork, the adjusting assembly is used to drive the shift fork to move in a horizontal direction to move the shift fork to the position of the gear selection guide block for gear selection; a limiting mechanism, the limiting mechanism includes a driving member and a limiting assembly, the driving member is used to drive the limiting assembly to move to the positions of a plurality of gear selection guide blocks on the gearbox body, so that the shift fork is in abutment with the limiting assembly, thereby limiting the position of the shift fork corresponding to the gear selection guide block.
[0007] In a possible implementation, the limiting assembly includes a limiting shaft, the limiting shaft is connected with an output shaft of the driving member, and the driving member drives the limiting shaft to move along the extension direction of the output shaft through the output shaft, so that one end of the limiting shaft is in abutment with the shift fork.
[0008] In a possible implementation, the driving member is a stepping motor or a servo motor.
[0009] In a possible implementation, the limiting shaft comprises a connecting sleeve and a limiting plate, the limiting plate is connected to an end edge of the connecting sleeve, the connecting sleeve and the limiting plate are sleeved outside the output shaft and are threadedly connected with the output shaft.
[0010] In a possible implementation, the connecting sleeve is used to be inserted into the box through a side sink on the box, and the limiting plate is used to be arranged in the side sink.
[0011] In a possible implementation, the driving member is a cylinder, and the limiting assembly further comprises a spring member, the spring member is sleeved with the connecting sleeve, and the spring member is used to pull the connecting sleeve in a direction away from the shift fork.
[0012] In a possible implementation, the adjusting assembly comprises a selection shaft and a telescopic member, the telescopic member is connected to the selection shaft, the selection shaft is connected with the shift fork, and the telescopic member is used to drive the selection shaft to make a translational movement in an axial direction of the selection shaft, so as to drive the shift fork to move to a position of the selection guide block.
[0013] In a possible implementation, the selection mechanism further comprises two selection interlocking arms, the two selection interlocking arms are arranged on two sides of the shift fork respectively, the top ends of the selection interlocking arms are connected to the adjusting assembly, the side walls of the selection interlocking arms are abutted with the limiting assembly, and the selection interlocking arms have a movable channel with the shift fork.
[0014] In a possible implementation, the telescopic member is one of a pneumatic telescopic machine, an electric telescopic machine and a hydraulic telescopic machine.
[0015] In a second aspect, the embodiments of the present application provide a selection and switching system, which comprises the selection device and the selection device provided in any of the first aspect, and a switching device connected to the adjusting assembly, the switching device is used to drive the adjusting assembly to drive the shift fork to rotate forward or reverse, so as to realize switching of different gears.
[0016] The selection device and the selection and switching system provided by the embodiments of the present application, wherein the selection device is provided with the limiting assembly, and the driving member is used to drive the limiting assembly to move to a position of the selection guide block selected by the shift fork, so that the shift fork can abut with the limiting assembly when the shift fork moves to the position of the selection guide block, the shift fork can be accurately moved to the position of the corresponding selection guide block, the shift fork is prevented from deviating from the positioning, the switching precision is improved, and the operation comfort of the driver is improved. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings, which are incorporated herein and constitute part of the specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.
[0018] Figure 1 Structure diagram of the selection device provided in the present application;
[0019] Figure 2 Structure diagram of another embodiment of the driving member in the selection device disclosed in the present application. Figure 1
[0020] BRIEF DESCRIPTION OF DRAWINGS
[0021] 100 - selection mechanism; 110 - shift fork; 120 - adjusting assembly; 121 - selection shaft; 122 - telescopic member; 130 - selection interlocking arm;
[0022] 200 - driving member; 210 - output shaft; 220 - spring member;
[0023] 300 - limiting assembly; 310 - limiting shaft; 311 - connecting sleeve; 312 - limiting plate;
[0024] 400 - box body; 410 - side sink;
[0025] 500 - selection guide block;
[0026] 600 - movable channel.
[0027] The specific embodiments of the present application have been shown and described in the above-described drawings, and will be described in more detail hereinafter. These drawings and the written description are not intended to restrict the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION
[0028] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The same reference numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the appended claims.
[0029] The terms "first", "second", "third", etc. (if any) in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein.
[0030] Secondly, it needs to be explained that in the description of the present application, the terms indicating the direction or position relationship of "in", "out", "first direction", "second direction" and the like are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0031] In addition, it also needs to be explained that in the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two components. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0032] As shown in the background, in the related art, the AMT gearbox usually includes a selection device and a shifting device, the selection device includes a control unit and a shift fork, the control unit sends a control instruction to drive the shift fork to reciprocate, determines the selection position, and controls the shift fork to swing through the shifting device to realize gear shifting.
[0033] However, the selection device is susceptible to electromagnetic interference, resulting in poor positioning accuracy of the shift fork, which seriously affects the gear shifting effect.
[0034] In view of the above technical problems, the embodiments of the present application provide a selection device and a selection and shifting system, wherein the selection device comprises a selection mechanism and a limiting mechanism, the selection mechanism is arranged on the gearbox body, the selection mechanism comprises a shift fork and an adjusting assembly connected to the shift fork, the adjusting assembly is used to drive the shift fork to move in the horizontal direction to move the shift fork to the position of the selection guide block for selection; the limiting mechanism comprises a driving member and a limiting assembly, the driving member is used to drive the limiting assembly to move to the positions of a plurality of selection guide blocks on the gearbox body, so that the shift fork abuts against the limiting assembly, thereby limiting the shift fork at the positions corresponding to the selection guide blocks, avoiding the shift fork from deviating from the positioning, and improving the gear shifting accuracy, thereby improving the driver's operation comfort.
[0035] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail in the following specific embodiments. The following several specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.
[0036] The embodiments of the present application provide a selection device, which is used for Figure 1 and Figure 2As shown, the gear shifting device comprises a gear selection mechanism 100 arranged on a gear box 400, the gear selection mechanism 100 comprising a shift fork 110 and an adjusting assembly 120 connected to the shift fork 110, the adjusting assembly 120 being configured to drive the shift fork 110 to move in a horizontal direction so as to move the shift fork 110 to a position of a gear selection guide block 500 for gear selection.
[0037] The gear selection mechanism 100 further comprises a limiting mechanism, the limiting mechanism comprising a driving member 200 and a limiting assembly 300, the driving member 200 being configured to drive the limiting assembly 300 to move to positions of a plurality of gear selection guide blocks 500 on the gear box 400 respectively, so as to abut the shift fork 110 against the limiting assembly 300, thereby limiting the shift fork 110 from deviating from the positions of the gear selection guide blocks 500.
[0038] It can be understood that the gear selection guide block 500 has an insertion groove, and the end of the shift fork 110 is provided with an insertion protrusion matched with the insertion groove. During gear selection, the adjusting assembly 120 drives the shift fork 110 to move in the horizontal direction and to be positioned at the position of the gear selection guide block 500 to be selected, and the insertion protrusion of the shift fork 110 is inserted into the insertion groove at the corresponding position to achieve gear selection. A gear shifting device (to be described below) drives the shift fork 110 inserted into the gear selection guide block 500 to rotate forward or reverse, thereby achieving switching from one gear position to another. In general, the adjusting assembly 120 drives the shift fork 110 to move in the horizontal direction to achieve insertion of the gear selection guide block 500 with different gear positions, and then the gear shifting device drives the shift fork 110 to rotate forward or reverse, thereby achieving switching of different gear positions under the gear selection guide block 500.
[0039] However, due to external factors such as electromagnetic interference, the adjusting assembly 120 cannot accurately position the shift fork 110 at the position of the gear selection guide block 500 to be selected, which causes abrasion between the gear selection guide block 500 and the shift fork 110, and seriously affects the gear shifting effect.
[0040] Therefore, in combination with Figure 1 and Figure 2 , the limiting assembly 300 can be arranged on the basis of the original gear selection mechanism, and the driving member 200 drives the limiting assembly 300 to move to the position of the gear selection guide block 500 to be selected by the shift fork 110, so that the shift fork 110 can abut against the limiting assembly 300 when the shift fork 110 is moved to the position of the gear selection guide block 500, and the shift fork 110 can be accurately positioned at the position of the corresponding gear selection guide block 500, thereby avoiding deviation of the shift fork 110, improving the gear shifting precision, avoiding abrasion between the gear selection guide block 500 and the shift fork 110, and improving the driving comfort.
[0041] In some embodiments, in combination with Figure 1 and Figure 2As shown, the limiting assembly 300 comprises a limiting shaft 310, which is connected with the output shaft 210 of the driving member 200. The driving member 200 drives the limiting shaft 310 to move along the extension direction of the output shaft 210 through the output shaft 210, so that one end of the limiting shaft 310 abuts against the shift fork 110.
[0042] Specifically, as shown in Figure 1 and Figure 2 the output shaft 210 of the driving member 200 is connected with the limiting shaft 310. When it is needed to select a gear position, the driving member 200 drives the limiting shaft 310 to move to the position of the selected gear guide block 500 having the gear position, so that when the shift fork 110 moves to the position of the selected gear guide block 500 for gear selection, the shift fork 110 can abut against the limiting shaft 310 for limiting, avoiding the shift fork 110 from deviating.
[0043] In some embodiments, the driving member 200 can be a stepper motor or a servo motor.
[0044] Specifically, the driving member 200 is configured to calculate the moving distance of the limiting shaft 310 by calculating the number of turns of the output shaft 210, so as to control the limiting shaft 310 to move to the selected gear guide block 500 at a desired position.
[0045] Further, as shown in Figure 1 and Figure 2 the limiting shaft 310 comprises a connecting sleeve 311 and a limiting plate 312. The limiting plate 312 is connected to the end edge of the connecting sleeve 311. The connecting sleeve 311 and the limiting plate 312 are sleeved outside the output shaft 210 and are threadedly connected with the output shaft 210.
[0046] Specifically, as shown in Figure 1 and Figure 2 the limiting plate 312 is connected to the end edge of the connecting sleeve 311 and is sleeved outside the output shaft 210 and is threadedly connected with the output shaft 210. When the driving member 200 drives the output shaft 210 to rotate, the limiting plate 312 moves along the extension direction of the output shaft, so as to realize the synchronous movement of the connecting sleeve 311, thereby moving the connecting sleeve 311 to the position of the corresponding selected gear guide block 500, so as to limit the shift fork 110, avoiding the shift fork 110 from deviating when positioned at the position of the selected gear guide block 500, causing the shift fork 110 to wear the selected gear guide block 500 and be damaged.
[0047] Further, as shown in Figure 1 and Figure 2 the connecting sleeve 311 is used to be inserted into the box body 400 through the side sink groove 410 on the box body 400, and the limiting plate 312 is used to be arranged in the side sink groove 410.
[0048] Specifically, as shown inFigure 1 and Figure 2 As shown, the connecting sleeve 311 passes through the side sinking groove 410 and through the housing 400. The limiting plate 312 is installed in the side sinking groove 410. Under the drive of the driving component 200, the limiting plate 312 and the connecting sleeve 311 move synchronously. The side sinking groove 410 can block the limiting plate 312, limit the limiting shaft 310, improve the positioning accuracy of the limiting shaft 310, and thus improve the positioning accuracy of the shift fork 110.
[0049] Of course, in other embodiments, when the drive unit 200 is a cylinder (described below), a gasket can be provided between the limit plate 312 and the side wall of the side sink 410 to prevent the air source from passing through the limit plate 312 and affecting the positioning accuracy of the shift fork 110.
[0050] In some implementation methods, combined with Figure 2 As shown, the driving component 200 can be a cylinder; the limiting component also includes a spring component 220, which is sleeved on the connecting sleeve 311 and is used to pull the connecting sleeve 311 in a direction away from the shift fork 110.
[0051] It is understandable that, such as Figure 2 As shown, the drive component 200 can also be a cylinder, that is, the limit shaft 310 is driven to move using a pneumatic drive. When a pneumatic drive is used, the output end of the drive component 200 is connected to the limit shaft 310. The drive component 200 is configured to calculate the moving distance of the limit shaft 310 by calculating the amount of air supplied, so as to control the movement of the limit shaft 310 to the position of the gear selection guide block 500 located at different positions. The outer periphery of the connecting sleeve 311 can be fitted with a spring component 220. After the gear shifting action is completed, the drive component 200 stops supplying air, so that the spring component 220 can pull the limit shaft 310 to move away from the shift fork 110 and return to its original position.
[0052] In some implementation methods, reference is made to Figure 1 and Figure 2 As shown, the adjustment assembly 120 includes a gear selection shaft 121 and a telescopic member 122. The telescopic member 122 is connected to the gear selection shaft 121, and the gear selection shaft 121 is connected to the shift fork 110. The telescopic member 122 is used to drive the gear selection shaft 121 to make a translational movement along its axial direction, so as to move the shift fork 110 to the position of the gear selection guide block 500.
[0053] Specifically, in combination Figure 1 and Figure 2As shown in the figure, the selection shaft 121 extends in the horizontal direction, the output end of the telescopic member 122 is connected to the selection shaft 121, the telescopic member 122 can drive the selection shaft 121 to move in the axial direction, and the shift fork 110 is connected to the selection shaft 121, so that the selection shaft 121 can be driven to move by the telescopic member 122, thereby driving the shift fork 110 to move to the position of the selection guide block 500 to achieve selection.
[0054] In some embodiments, the telescopic member 122 is one of a pneumatic telescopic machine, an electric telescopic machine, and a hydraulic telescopic machine. Figure 1 Figure 2 As shown in the figure, the selection mechanism 100 further comprises two selection interlocking arms 130, the selection interlocking arms 130 are arranged on both sides of the shift fork 110, the top end of the selection interlocking arms 130 is connected to the adjusting assembly 120, the side wall of the selection interlocking arms 130 abuts against the limiting assembly 300, and the selection interlocking arms 130 and the shift fork 110 have an active channel 600 therebetween.
[0055] Specifically, as shown in the figure, the two selection interlocking arms 130 are connected to form an integrated structure through a connecting part, the top end is movably connected to the selection shaft 121, and the two selection interlocking arms 130 are arranged with a spacing therebetween to allow the shift fork 110 to pass through, that is, the two selection interlocking arms 130 are arranged on both sides of the shift fork 110 and have the active channel 600 therebetween to limit the axial movement of the shift fork 110, avoid the shift fork from deviating during rotation, realize interlocking between different gears, and improve the safety during vehicle driving; the side wall of the selection interlocking arms 130 abuts against the limiting assembly 300 to further limit the shift fork 110, so that the shift fork 110 does not start gear shifting before reaching the position of the selection guide block 500. Figure 1 Figure 2 As shown in the figure, the two selection interlocking arms 130 are connected to form an integrated structure through a connecting part, the top end is movably connected to the selection shaft 121, and the two selection interlocking arms 130 are arranged with a spacing therebetween to allow the shift fork 110 to pass through, that is, the two selection interlocking arms 130 are arranged on both sides of the shift fork 110 and have the active channel 600 therebetween to limit the axial movement of the shift fork 110, avoid the shift fork from deviating during rotation, realize interlocking between different gears, and improve the safety during vehicle driving; the side wall of the selection interlocking arms 130 abuts against the limiting assembly 300 to further limit the shift fork 110, so that the shift fork 110 does not start gear shifting before reaching the position of the selection guide block 500.
[0056] In some embodiments, the telescopic member 122 is one of a pneumatic telescopic machine, an electric telescopic machine, and a hydraulic telescopic machine.
[0057] It can be understood that the telescopic member 122 can drive the selection shaft 121 to move in the axial direction, thereby driving the shift fork 110 to move to determine the selection guide block 500 at different positions of the gearbox to achieve selection, and the specific driving mode of the telescopic member 122 is not limited.
[0058] In a second aspect, the embodiments of the present application provide a selection and gear shifting system, which comprises the gear shifting device and any one of the selection and gear shifting devices provided in the first aspect, and the gear shifting device is connected to the adjusting assembly 120 and is used to drive the adjusting assembly 120 to drive the shift fork 110 to rotate forward or reverse to realize switching between different gears.
[0059] It can be understood that the shift fork 110 is connected to the selected gear shaft 121, the gear shifting device comprises a gear shifting driving member, an output end of the gear shifting driving member is connected to the selected gear shaft 121, and the gear shifting driving member is configured to be able to drive the selected gear shaft 121 to rotate, thereby driving the shift fork 110 to rotate forward or reversely, and realizing the switching of different gears.
[0060] It should be understood, however, that other embodiments of the application can be made without departing from the scope thereof. It is intended that all such additional embodiments be included within the scope of the following claims. The specifications and drawings are, accordingly to be regarded in an illustrative rather than a restrictive sense.
Claims
1. A selection device, characterized in that The application relates to a gear shifting mechanism (100) for a gearbox (400), which comprises a shifting fork (110) and an adjusting assembly (120) connected to the shifting fork (110), the adjusting assembly (120) being used for driving the shifting fork (110) to move in a horizontal direction so as to move the shifting fork (110) to the position of a gear shifting guide block (500) for gear shifting. The application further relates to a limiting mechanism, which comprises a driving member (200) and a limiting assembly (300), the driving member (200) being used for driving the limiting assembly (300) to move to the positions of a plurality of gear shifting guide blocks (500) on the gearbox (400) respectively, so as to abut the shifting fork (110) against the limiting assembly (300), thereby limiting the shifting fork (110) at the positions of the gear shifting guide blocks (500). The limiting assembly (300) comprises a limiting shaft (310) connected to the output shaft (210) of the driving member (200), the driving member (200) drives the limiting shaft (310) to move along the extension direction of the output shaft (210) through the output shaft (210), so that one end of the limiting shaft (310) abuts against the shifting fork (110).
2. The selecting device according to claim 1, characterized in that The driving member (200) is a stepping motor or a servo motor.
3. The selecting device according to claim 2, characterized in that The limiting shaft (310) comprises a connecting sleeve (311) and a limiting plate (312), the limiting plate (312) being connected to the end edge of the connecting sleeve (311), the connecting sleeve (311) and the limiting plate (312) being sleeved on the output shaft (210) and being threadedly connected with the output shaft (210).
4. The selecting device according to claim 3, characterized in that The connecting sleeve (311) is used for being inserted into the gearbox (400) through a side sink groove (410) on the gearbox (400), and the limiting plate (312) is arranged in the side sink groove (410).
5. The selecting device according to claim 4, characterized in that The driving member (200) is a pneumatic cylinder.
6. The selecting device according to claim 4, characterized in that The limiting assembly further comprises a spring member (220) sleeved on the connecting sleeve (311), the spring member (220) being used for pulling the connecting sleeve (311) in a direction away from the shifting fork (110). The adjusting assembly (120) comprises a gear shifting shaft (121) and an extension member (122), the extension member (122) being connected to the gear shifting shaft (121), the gear shifting shaft (121) being connected to the shifting fork (110), and the extension member (122) being used for driving the gear shifting shaft (121) to make a translational movement along the axial direction of the gear shifting shaft (121), so as to drive the shifting fork (110) to move to the position of the gear shifting guide block (500).
7. The selecting device according to any of claims 1-6, characterized in that, 8. The selecting device according to claim 7, characterized in that The selecting gear mechanism (100) further comprises two selecting gear interlocking arms (130), the two selecting gear interlocking arms (130) are respectively arranged on both sides of the shift fork (110), the top end of the selecting gear interlocking arm (130) is connected to the adjusting assembly (120), the side wall of the selecting gear interlocking arm (130) is in abutment with the limiting assembly (300), and the selecting gear interlocking arm (130) and the shift fork (110) have a movable channel (600) therebetween.
9. The selecting device according to claim 7, characterized in that The telescopic member (122) is one of a pneumatic telescopic machine, an electric telescopic machine or a hydraulic telescopic machine.
10. A shift selection system characterized by, The gear shifting device is connected to the adjusting assembly (120), and is used to drive the adjusting assembly (120) to drive the shift fork (110) to rotate forward or reversely, so as to realize the switching of different gears.