Electromagnetic gear shifting mechanism and transmission

Abstract

The utility model provides an electromagnetic gear shifting mechanism and a transmission, the mechanism comprises an electromagnetic gear shifter (1) fixedly connected with a transmission shell, a gear hub (3) fixedly connected with a transmission shaft (2) and a gear ring disc (4) fixedly connected with gear shifting gears on the two sides, and the electromagnetic gear shifter (1) is located on the periphery of the gear hub (3); the electromagnetic gear shifting device is characterized in that a combined sliding sleeve (7) is further arranged between the electromagnetic gear shifting device (1) and the gear hub (3), and the combined sliding sleeve (7) can move towards the gear ring discs (4) on the two sides under the electromagnetic action of the electromagnetic gear shifting device (1) and is correspondingly connected with the gear ring discs (4) on the two sides; a pneumatic shifting fork assembly and the like in the prior art are replaced with the electromagnetic gear ring assembly, left-right movement of the combined sliding sleeve is achieved through electromagnetic force, and therefore gear shifting is achieved, the structure is compact, the number of needed parts is small, and cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of shifting mechanisms, in particular to an electromagnetic shifting mechanism and a transmission. Background Art

[0002] like Figure 1 The figure shows a structural cross-sectional view of a shift mechanism in the prior art, comprising a pneumatic shift fork assembly 0-1 fixedly connected to the transmission housing, a gear hub 0-3 fixedly connected to the transmission shaft 0-2 by a key connection, and a gear ring 0-4 fixedly connected to the shift gears 0-5 and 0-6 on both sides by welding. When the transmission is working normally, the transmission shaft 0-2 drives the gear hub 0-3 to rotate. When the gear is engaged, the cylinder is actuated to move the pneumatic shift fork assembly 1 to the left (or right) through the transmission mechanism, so that the sliding sleeve connects the gear hub and the gear ring. Since the gear ring 0-4 is fixedly connected to the corresponding side gear, the 2nd gear (or 1st gear) is engaged, thereby driving the corresponding side gear to rotate (and continuing to drive other rotating pairs) to complete the shift action.

[0003] The above-mentioned defects and shortcomings of the shifting mechanism in the prior art during the shifting process are: 1) many parts are required for shifting, and the transmission efficiency is low; 2) the cost of parts is high.

[0004] Therefore, there is an urgent need to provide an electromagnetic shift mechanism and a transmission to solve the defects and shortcomings in the above-mentioned prior art. Utility Model Content

[0005] In order to solve the defects and shortcomings in the prior art, the utility model provides an electromagnetic shift mechanism and a transmission.

[0006] The technical solution provided by the utility model is as follows:

[0007] An electromagnetic shifting mechanism, the mechanism comprising an electromagnetic shifter fixedly connected to a transmission housing, a gear hub fixedly connected to a transmission shaft, and a gear ring plate fixedly connected to shift gears on both sides, the electromagnetic shifter being located at the periphery of the gear hub; characterized in that a combined sliding sleeve is further provided between the electromagnetic shifter and the gear hub, the combined sliding sleeve being able to move toward the gear ring plates on both sides and engage with the gear ring plates on both sides under the electromagnetic action of the electromagnetic shifter.

[0008] As a further preferred embodiment of the utility model, the electromagnetic shifter includes a shell fixedly connected to the transmission housing, the interior of the shell is divided into left and right cavities by a partition, and the left and right coils corresponding to the gear ring plates on both sides are respectively accommodated in the left and right cavities.

[0009] As a further preferred embodiment of the present invention, the left and right coils are powered on and work in a selective manner;

[0010] When the left coil is energized, the combined sliding sleeve moves to the left side under the action of electromagnetic force and engages with the corresponding left gear ring disk;

[0011] When the right coil is energized, the combined sliding sleeve moves to the right side under the action of electromagnetic force and engages with the side gear ring disk accordingly.

[0012] As a further preferred embodiment of the utility model, the combined sleeve comprises a sleeve outer ring located radially outward and a sleeve inner ring located radially inward, the sleeve outer ring is fixedly connected to the sleeve inner ring, and the sleeve outer ring extends out from both sides of the sleeve inner ring.

[0013] As a further preferred embodiment of the present invention, the outer ring of the sliding sleeve is made of a magnetic conductive material, and the inner ring of the sliding sleeve is made of a wear-resistant material.

[0014] As a further preferred embodiment of the present invention, the outer ring of the sliding sleeve is correspondingly engaged with the gear ring disks on both sides, and the inner ring of the sliding sleeve is limitedly matched with the gear hub.

[0015] As a further preferred embodiment of the utility model, a plurality of engaging teeth are protruding from the outer edge of the outer ring of the sliding sleeve, and a plurality of engaging holes are evenly opened on the outer edge of the gear ring disk at positions corresponding to the engaging teeth, and the engaging teeth can enter the corresponding engaging holes to engage with the gear ring disks on both sides.

[0016] As a further preferred embodiment of the utility model, a limiting member is provided on the gear hub, and a plurality of limiting holes are opened on the inner side of the inner ring of the sliding sleeve, and the limiting member can extend into the limiting hole and cooperate with the limiting hole.

[0017] As a further preferred embodiment of the present invention, the limiting member includes a top limiting ball and a bottom elastic member, the limiting ball can extend into the limiting hole and cooperate with it, one end of the elastic member is connected to the limiting ball, and the other end is connected to the inner wall of the gear hub.

[0018] Furthermore, the utility model also provides a transmission, characterized in that: the transmission uses the electromagnetic shifting mechanism.

[0019] Compared with the prior art, the beneficial effects achieved by the utility model include:

[0020] 1) The utility model provides an electromagnetic shift mechanism and a transmission, which replaces the pneumatic fork assembly in the prior art with an electromagnetic gear ring assembly, and realizes the left and right movement of the combined sliding sleeve through electromagnetic force, thereby realizing gear shifting. The structure is compact, the number of required parts is small, and the cost is effectively reduced.

[0021] 2) The utility model provides an electromagnetic shift mechanism and a transmission. The outer ring of the sliding sleeve is made of magnetic conductive material, and the inner ring of the sliding sleeve is made of wear-resistant material. While ensuring good electromagnetic effect of the outer ring of the sliding sleeve and high strength and wear resistance of the inner ring of the sliding sleeve, the material and assembly costs are reduced and maintenance is convenient;

[0022] 3) The utility model provides an electromagnetic shift mechanism and a transmission, which realizes electronic control by replacing the pneumatic fork assembly and the like in the prior art with an electromagnetic gear ring assembly, thereby facilitating the electrification control of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The figure is a structural cross-sectional view of a gear shifting mechanism in the prior art.

[0024] Figure 2 The utility model is a structural cross-sectional view of an electromagnetic shift mechanism.

[0025] Figure 3 The figure is a structural assembly diagram of an electromagnetic shift mechanism in the utility model.

[0026] Figure 4 It is a structural explosion diagram of an electromagnetic shift mechanism in the utility model.

[0027] Figure 5 The utility model is a schematic structural diagram of a combined sliding sleeve of an electromagnetic shift mechanism.

[0028] Figure 6 It is a partially enlarged cross-sectional view of an electromagnetic shift mechanism in the utility model;

[0029] Figure 7 It is a structural schematic diagram of an electromagnetic shift mechanism in the utility model when shifting on the left side;

[0030] Figure 8 The utility model is a schematic structural diagram of an electromagnetic shift mechanism when shifting gears on the right side. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] [First embodiment]

[0035] like Figure 2-8 FIG. 1 is an electromagnetic shift mechanism provided by the first embodiment of the utility model. Figure 2-4 As shown, the mechanism includes an electromagnetic shifter 1 fixedly connected to the transmission housing, a gear hub 3 fixedly connected to the transmission shaft 2, and a gear ring plate 4 fixedly connected to the shift gears on both sides. The electromagnetic shifter 1 is located at the outer periphery of the gear hub 3; a combined sleeve 7 is also provided between the electromagnetic shifter 1 and the gear hub 3. The combined sleeve 7 can move toward the gear ring plates 4 on both sides and engage with the gear ring plates 4 on both sides under the electromagnetic action of the electromagnetic shifter 1. By replacing the pneumatic fork assembly in the prior art with the electromagnetic gear ring assembly, the electromagnetic force is used to realize the left and right movement of the combined sleeve, thereby realizing gear shifting. The structure is compact, the number of required components is small, and the cost is effectively reduced.

[0036] like Figure 6 As shown, the electromagnetic shifter 1 in this embodiment includes a shell 11 fixedly connected to the transmission housing, and the interior of the shell 11 is divided into left and right cavities by a partition 12. The left and right cavities respectively accommodate left and right coils 13 corresponding to the gear ring plates 4 on both sides.

[0037] The left and right coils in this embodiment are energized in a selective manner to achieve the engagement operation with the corresponding side gear ring disk;

[0038] When the left coil is energized, the combined sliding sleeve 7 moves to the left side under the action of electromagnetic force and engages with the left gear ring disk; Figure 7 As shown;

[0039] When the right coil is energized, the combined sliding sleeve 7 moves to the right side under the action of electromagnetic force and engages with the side gear ring disk accordingly; Figure 8 shown.

[0040] In this embodiment, if Figure 5-6 As shown, the combined sleeve 7 includes a sleeve outer ring 71 located on the radial outer side and a sleeve inner ring 72 located on the radial inner side, the sleeve outer ring 71 is fixedly connected to the sleeve inner ring 72, and the sleeve outer ring 71 is arranged to extend relative to the sleeve inner ring 72 on both sides; wherein the sleeve outer ring 71 is correspondingly engaged with the gear ring disks 4 on both sides, and the sleeve inner ring 72 is limitedly matched with the gear hub 3. In order to ensure good electromagnetic effect with the coil 13, the sleeve outer ring 71 is made of magnetic conductive material, such as 20MnCr5; the sleeve inner ring 72 is made of high-strength wear-resistant material to ensure that it can maintain good performance and long service life after long-term contact with the gear hub 3, while ensuring good electromagnetic effect of the sleeve outer ring and high-strength wear resistance of the sleeve inner ring, reducing material and assembly costs, and facilitating maintenance.

[0041] like Figure 4-6 As shown, a plurality of engaging teeth 711 are protruding from the outer edge of the outer ring 71 of the sliding sleeve, and a plurality of engaging holes 41 are evenly opened on the outer edge of the gear ring disk 4 at positions corresponding to the engaging teeth 711. The engaging teeth 711 can enter the corresponding engaging holes 41 to achieve corresponding engagement with the gear ring disks 4 on both sides.

[0042] In addition, if Figure 6 As shown, a limiting member 8 is provided on the gear hub 3, and a plurality of limiting holes 721 are provided on the inner side of the inner ring 72 of the sliding sleeve. The limiting member 8 can extend into the limiting hole 721 and cooperate with it to ensure the positioning stability after the gear shift is in place and avoid unexpected disengagement. At least three limiting holes 721 are provided in the axial direction to ensure that the limiting member 8 can cooperate with the limiting holes 721 at different corresponding positions during the left-side shifting, center shifting and right-side shifting processes.

[0043] Preferably, the limiting member 8 in this embodiment includes a top limiting ball 81 and a bottom elastic member 82. The limiting ball 81 can extend into the limiting hole 721 and cooperate with it to limit the position. The elastic member 82 is preferably a spring, one end of which is connected to the limiting ball 81 and the other end is connected to the inner wall of the gear hub 3.

[0044] In the specific gear shifting process of this embodiment:

[0045] like Figure 7As shown, when the left coil is energized (the right coil is de-energized at this time), the combined sleeve 7 moves to the left under the electromagnetic action, overcomes the resistance of the limiting ball 81 and compresses the elastic member 82, and the rectangular teeth on the outer edge thereof are inserted into the engaging hole of the gear ring disk fixedly connected to the left shift gear 5, and the second gear is engaged. At this time, the limiting ball 81 enters the inside of the right limiting hole 721 under the elastic reset action of the elastic member 82 and cooperates with the limiting hole 721 to play the role of preventing the gear from being disengaged;

[0046] like Figure 8 As shown, when the right coil is energized (the left coil is de-energized at this time), the combined sleeve 7 moves to the right under the action of the electromagnetic force, overcomes the resistance of the limiting ball 81 and compresses the elastic member 82, and the rectangular teeth on the outer edge are inserted into the engaging hole of the gear ring disk fixedly connected to the right shift gear 6, and the first gear is engaged. At this time, the limiting ball 81 enters the inside of the left limiting hole 721 under the elastic reset action of the elastic member 82 and cooperates with it to prevent the gear from being disengaged.

[0047] [Second embodiment]

[0048] The second embodiment of the present invention further provides a transmission, wherein the transmission uses the electromagnetic shift mechanism described in the first embodiment.

[0049] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An electromagnetic shift mechanism, comprising an electromagnetic shifter (1) fixedly connected to a transmission housing, a gear hub (3) fixedly connected to a transmission shaft (2), and a gear ring plate (4) fixedly connected to shift gears on both sides, wherein the electromagnetic shifter (1) is located on the outer periphery of the gear hub (3); characterized in that: A combined sliding sleeve (7) is also provided between the electromagnetic shifter (1) and the gear hub (3); the combined sliding sleeve (7) can move towards the gear ring disks (4) on both sides and correspondingly engage with the gear ring disks (4) on both sides under the electromagnetic action of the electromagnetic shifter (1).

2. The electromagnetic shift mechanism according to claim 1, characterized in that: The electromagnetic shifter (1) comprises a housing (11) fixedly connected to a transmission housing, wherein the interior of the housing (11) is divided into left and right cavities by a partition (12), and the left and right cavities respectively accommodate left and right coils (13) corresponding to the gear ring disks (4) on both sides.

3. The electromagnetic shift mechanism according to claim 2, characterized in that: The left and right coils are powered on and work in a selective manner; When the left coil is energized, the combined sliding sleeve (7) moves to the left side under the action of the electromagnetic force and engages with the corresponding left gear ring disk; When the right coil is energized, the combined sliding sleeve (7) moves to the right side under the action of the electromagnetic force and engages with the side gear ring disk accordingly.

4. The electromagnetic shift mechanism according to claim 1, characterized in that: The combined sleeve (7) comprises a sleeve outer ring (71) located radially outward and a sleeve inner ring (72) located radially inward, the sleeve outer ring (71) being fixedly connected to the sleeve inner ring (72), and the sleeve outer ring (71) is arranged to protrude from both sides of the sleeve inner ring (72).

5. The electromagnetic shift mechanism according to claim 4, characterized in that: The outer ring (71) of the sliding sleeve is made of a magnetic conductive material, and the inner ring (72) of the sliding sleeve is made of a wear-resistant material.

6. The electromagnetic shift mechanism according to claim 4, characterized in that: The outer ring of the sliding sleeve (71) is correspondingly engaged with the gear ring disks (4) on both sides, and the inner ring of the sliding sleeve (72) is limitedly engaged with the gear hub (3).

7. The electromagnetic shift mechanism according to claim 6, characterized in that: The outer edge of the outer ring (71) of the sliding sleeve is protruded with a plurality of engaging teeth (711), and the outer edge of the gear ring disk (4) is evenly provided with a plurality of engaging holes (41) at positions corresponding to the engaging teeth (711), and the engaging teeth (711) can enter the corresponding engaging holes (41) to engage with the gear ring disks (4) on both sides.

8. The electromagnetic shift mechanism according to claim 6, characterized in that: A limiting member (8) is provided on the gear hub (3), a plurality of limiting holes (721) are provided on the inner side of the inner ring of the sliding sleeve (72), and the limiting member (8) can extend into the limiting holes (721) and cooperate with them in limiting manner.

9. The electromagnetic shift mechanism according to claim 8, characterized in that: The limiting member (8) comprises a top limiting ball (81) and a bottom elastic member (82); the limiting ball (81) can extend into the limiting hole (721) and cooperate with the limiting hole; one end of the elastic member (82) is connected to the limiting ball (81) and the other end is connected to the inner wall of the gear hub (3).

10. A transmission, characterized in that: The transmission uses an electromagnetic shift mechanism as described in any one of claims 1-9.

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