A two-gear shifting device and a two-gear shifting equipment

Abstract

This invention provides a two-speed shifting device and a two-speed shifting apparatus. The two-speed shifting device includes a housing, a shift finger for fixed connection with a shift fork, a connecting shaft, and a sensor. The housing has a connection opening. The shift finger is disposed within the housing. The shift finger includes a connecting portion with a through hole, the through hole corresponding to the connection opening. The connecting shaft is fixed and passes through the through hole, one end of the connecting shaft protruding from one end of the through hole and located within the housing, and the other end of the connecting shaft protruding from the other end of the through hole and extending out of the housing from the connection opening. A first bearing and a second bearing are respectively provided at both ends of the connecting shaft, the first bearing and the second bearing being confined within the housing. The connecting shaft is rotatably connected to the sensor. This invention limits the position of the connecting shaft and the shift finger to prevent the shift finger from wobbling during operation, and can be used for horizontal mounting on the gearbox or mounting on the side or slope of the gearbox.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle technology, specifically relating to a two-gear shifting device and a two-gear shifting equipment. Background Technology

[0002] In the field of modern automotive transmission technology, the shift fork, as a core component of the shifting system, plays a crucial role in achieving precise and smooth gear shifting. While the structure and movement of the shift fork in existing technologies can meet basic shifting functions, it typically relies solely on its engagement with the shift fork shaft for movement. Under complex conditions such as frequent gear shifts and vibrations during vehicle operation, this simple fixing method easily leads to axial and radial wobble in the shift fork. Poor lubrication increases the friction between the shift fork and related components, which not only disrupts the normal movement of the shift fork but also further exacerbates the wobble. External vibrations can also be transmitted to the shift fork through the transmission housing, causing instability during its movement. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings and deficiencies in the prior art and provide a two-speed shifting device that limits the connecting shaft and the shifting finger to prevent the shifting finger from shaking during operation.

[0004] This utility model is achieved through the following technical solution:

[0005] A two-speed shifting device includes a housing, a shift finger for fixed connection with a shift fork, a connecting shaft, and a sensor. The housing has a connection opening. The shift finger is disposed within the housing. The shift finger includes a connecting portion with a through hole corresponding to the connection opening. The connecting shaft is fixed and passes through the through hole, with one end extending out of the through hole and located within the housing, and the other end extending out of the through hole and out of the connection opening to the outside of the housing. A first bearing and a second bearing are respectively provided at both ends of the connecting shaft, with the first bearing and the second bearing respectively confined within the housing. The connecting shaft is rotatably connected to the sensor.

[0006] This utility model provides a two-speed shifting device. The connecting shaft is fixed and passes through the connecting through hole of the shifting finger, so that the connecting shaft can move synchronously with the shifting finger. The shifting finger is connected to the sensor through the connecting shaft, so that the sensor can detect the angle of the shifting finger. A first bearing and a second bearing are respectively provided at both ends of the connecting shaft. The first bearing and the second bearing are respectively located in the housing, which supports the connecting shaft and limits the connection shaft and the shifting finger to prevent the shifting finger from shaking during operation.

[0007] Furthermore, the two-speed shifting device also includes a cylindrical pin; the connecting shaft has a first fixing hole; the connecting part has a second fixing hole corresponding to the position of the first fixing hole; the cylindrical pin passes through the first fixing hole and the second fixing hole. The cylindrical pin passing through the first fixing hole of the connecting shaft and the second fixing hole of the shifting finger allows the connecting shaft and the shifting finger to move synchronously.

[0008] Furthermore, the housing has a first groove, which is positioned opposite to the connecting opening; the first bearing is housed in the first groove. The first bearing is housed in the first groove of the housing, confining it within the housing and allowing the connecting shaft to rotate stably within the first bearing, thus preventing the shift finger and the connecting shaft from shaking.

[0009] Furthermore, the two-speed shifting device also includes a bearing housing; the bearing housing passes through the connecting opening and is fixed to the sensor; the bearing housing has a through-hole communicating with the interior of the housing, and the second bearing is disposed in the through-hole. The bearing housing is fixed to the sensor, and the connecting shaft passes through the connecting opening of the housing and can pass through the connecting opening of the bearing housing to connect to the sensor. The bearing housing allows the second bearing to be stably confined within the housing, which is beneficial for the synchronous and stable rotation of the connecting shaft and the shifting finger.

[0010] Furthermore, the first bearing and the bearing housing respectively abut against the two end faces of the connecting portion. The abutment of the first bearing and the bearing housing against the two end faces of the connecting portion fills the gap between the two end faces of the shift finger and the housing, improving the stability of the shift finger.

[0011] Furthermore, the two-speed shifting device also includes a shifting motor, which is connected to the shifting fingers.

[0012] Furthermore, a lead screw assembly is provided between the shift motor and the shift finger, one end of the lead screw assembly is fixed to the output shaft of the shift motor, and the other end is fixed to the shift finger.

[0013] Furthermore, the shift finger also includes two engaging portions, which are respectively disposed on both sides of the connecting portion, forming a receiving area between the two engaging portions; the lead screw assembly is installed in the receiving area.

[0014] Furthermore, the engaging portion has an engaging opening at one end away from the connecting portion; the lead screw assembly includes a lead screw nut and a rotating lead screw; the two ends of the lead screw nut are provided with trunnions, which engage with the engaging opening; one end of the rotating lead screw is fixed to the output shaft of the shift motor, and the other end passes through the lead screw nut and extends between the two engaging portions.

[0015] This utility model also provides a two-speed shifting device, including a shift fork and the above-mentioned two-speed shifting device; the shift fork is fixedly connected to the shift finger of the two-speed shifting device.

[0016] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the two-speed shifting device in Embodiment 1.

[0018] Figure 2 This is a structural schematic diagram of the box in Example 1.

[0019] Figure 3 This is a schematic diagram of the shift finger structure in Example 1.

[0020] Figure 4 This is an exploded view of the two-speed shifting device of Embodiment 1.

[0021] Figure 5 This is an internal connection diagram of the second-gear shifting mechanism in Embodiment 1.

[0022] Figure 6 This is a schematic diagram of the connection between the shift finger and the shift motor in Embodiment 1. Detailed Implementation

[0023] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit its scope. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the embodiments of the present invention, and not all of the structures.

[0024] Furthermore, the terms "first," "second," "third," etc., used in the specification and claims are only for the purpose of distinguishing the description of the same technical features and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated, nor necessarily the order of description or chronological sequence. Where appropriate, the terms are interchangeable. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0025] Similarly, the terms "fixed" and "connected" are used in the specification and claims and should not be construed as limited to a direct connection. Therefore, the expression "device A is connected to device B" should not be limited to device A being directly connected to device B in a device or system; it means that there is a path between device A and device B, which can be a path that includes other devices or tools.

[0026] Example 1

[0027] This embodiment provides a two-speed shifting device. Figure 1 This is a schematic diagram of the two-speed shifting device. Figure 2 This is a structural diagram of the box. Figure 3 This is a schematic diagram of the gear shifting mechanism. Figure 4 This is an exploded view of the second gear shift mechanism. Please refer to [link / reference]. Figure 1-4 The two-speed shifting device includes a housing 1, a shift finger 2 for fixed connection with the shift fork, a connecting shaft 3, and a sensor 4. The housing 1 has a connecting opening 11. The shift finger 2 is disposed inside the housing 1. The shift finger 2 includes a connecting part 21, which has a through hole 211, and the through hole 211 corresponds to the position of the connecting opening 11. The connecting shaft 3 is fixed and passes through the through hole 211. One end of the connecting shaft 3 passes through one end of the through hole 211 and is located inside the housing 1. The other end of the connecting shaft 3 passes through the other end of the through hole 211 and extends out of the housing 1 from the connecting opening 11. A first bearing 5 and a second bearing 6 are respectively provided at both ends of the connecting shaft 3. The first bearing 5 and the second bearing 6 are respectively limited to the housing 1. The connecting shaft 3 is rotatably connected to the sensor 4.

[0028] In the two-speed shifting device provided in this embodiment, the connecting shaft 3 is fixed and passes through the connecting through hole 211 of the shifting finger 2, allowing the connecting shaft 3 to move synchronously with the shifting finger 2. The shifting finger 2 is connected to the sensor 4 through the connecting shaft 3, enabling the sensor 4 to detect the angle of the shifting finger 2. A first bearing 5 and a second bearing 6 are respectively provided at both ends of the connecting shaft 3. The first bearing 5 and the second bearing 6 are respectively positioned within the housing 1, serving as a support for the connecting shaft 3 and limiting the position of the connecting shaft 3 and the shifting finger 2, preventing the shifting finger 2 from shaking during operation. Because the shifting finger 2 can be limited by the first bearing 5 and the second bearing 6, the shifting finger 2 can be installed tilted or sideways, maintaining stability during operation even with the limitation of the first bearing 5 and the second bearing 6.

[0029] Figure 5 This is the internal connection diagram of the second gear shift mechanism. Please refer to it. Figure 2-5 In this embodiment, the two-speed shifting device further includes a cylindrical pin 31; a first fixing hole is provided through the connecting shaft 3; a second fixing hole is provided in the connecting part 21 corresponding to the position of the first fixing hole; the cylindrical pin 31 passes through the first fixing hole and the second fixing hole. The cylindrical pin 31 passes through the first fixing hole of the connecting shaft 3 and the second fixing hole of the shift finger 2, so that the connecting shaft 3 and the shift finger 2 can move synchronously.

[0030] Please see Figure 2-5 In this embodiment, the housing 1 has a first groove 12, which is opposite to the connecting opening 11; the first bearing 5 is housed in the first groove 12. The first bearing 5 is housed in the first groove 12 on the housing 1, which limits the first bearing 5 to the housing 1, so that the connecting shaft 3 can rotate stably in the first bearing 5, and avoids the shift finger 2 and the connecting shaft 3 from shaking.

[0031] Please see Figure 2-5 In this embodiment, the two-speed shifting device further includes a bearing seat 8; the bearing seat 8 passes through the connecting opening 11 and is fixed to the sensor 4; the bearing seat 8 has a through-hole communicating with the interior of the housing 1, and the second bearing 6 is disposed in the through-hole. The bearing seat 8 is fixed to the sensor 4, and the bearing seat 8 passes through the connecting opening 11 of the housing 1. The connecting shaft 3 can pass through the connecting opening 11 of the bearing seat 8 and be connected to the sensor 4. The bearing seat 8 allows the second bearing 6 to be stably confined in the housing 1, which is beneficial for the connecting shaft 3 and the shifting finger 2 to rotate synchronously and stably.

[0032] In one embodiment, the first bearing 5 is an oil-impregnated bearing, and the second bearing 6 is a rolling bearing.

[0033] In this embodiment, the first bearing 5 and the bearing seat 8 abut against the two end faces of the connecting part 21, respectively. The first bearing 5 and the bearing seat 8 abut against the two end faces of the connecting part 21, thereby filling the gap between the two end faces of the shift finger 2 and the housing 1 through the first bearing 5 and the bearing seat 8, improving the stability of the shift finger 2. A rubber washer is provided between the bearing seat 8 and the second bearing 6 to reduce friction.

[0034] Please see Figure 1 In this embodiment, the two-speed shifting device also includes a shifting motor 7, which is connected to the shifting finger 2 in a transmission manner.

[0035] Please see Figure 2-4 In this embodiment, a lead screw assembly 9 is provided between the shift motor 7 and the shift finger 2. One end of the lead screw assembly 9 is fixed to the output shaft of the shift motor 7, and the other end is fixed to the shift finger 2.

[0036] In this embodiment, the shift finger 2 further includes two engaging portions 22, which are respectively disposed on both sides of the connecting portion 21, and a receiving area is formed between the two engaging portions 22; the lead screw assembly 9 is installed in the receiving area.

[0037] Figure 6 This is a diagram showing the connection between the shift finger and the shift motor. Please refer to it. Figure 3 and Figure 6 In this embodiment, the engaging portion 22 has an engaging opening 222 at one end away from the connecting portion 21; the lead screw assembly 9 includes a lead screw nut 91 and a rotating lead screw 92; the two ends of the lead screw nut 91 are provided with trunnions 93, which engage with the engaging opening 222; one end of the rotating lead screw 92 is fixed to the output shaft of the shift motor 7, and the other end passes through the lead screw nut 91 and extends between the two engaging portions 22. The lead screw nut 91 engages with the engaging opening 222 of the engaging portion 22 through the trunnions 93 at both ends, so that the lead screw assembly 9 is fixedly connected to the shift finger 2. Under the drive of the shift motor 7, the lead screw assembly 9 drives the shift finger 2 to rotate within a certain range.

[0038] Please see Figure 2-4 In one embodiment, the housing 1 is further provided with a transmission through hole 13. One end of the lead screw assembly 9 is fixed to the output shaft of the shift motor 7, and the other end passes through the transmission through hole 13 into the housing 1 and is fixed to the shift finger 2. The extending direction of the transmission through hole 13 is perpendicular to the extending direction of the connecting opening 11, so that the sensor 4 is perpendicular to the lead screw assembly 5. The sensor 4 is connected to the connecting part 21 on the upper part of the shift finger 2, and the lead screw assembly 9 is connected to the engaging part 22 on the lower part of the shift finger 2.

[0039] Example 2

[0040] This embodiment 2 provides a two-speed shifting device, including a shift fork and the two-speed shifting device of embodiment 1; the shift fork is fixedly connected to the shift finger 2 of the two-speed shifting device.

[0041] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A two-speed shifting device, characterized in that: Includes a housing, shift fingers for fixed connection with the shift fork, a connecting shaft, and a sensor; The housing has a connection opening; The shift finger is disposed inside the housing; the shift finger includes a connecting part, the connecting part having a through hole, the through hole being positioned corresponding to the connecting opening; The connecting shaft is fixed and passes through the connecting through hole. One end of the connecting shaft passes through one end of the connecting through hole and is located inside the housing. The other end of the connecting shaft passes through the other end of the connecting through hole and extends out of the housing from the connecting opening. The two ends of the connecting shaft are respectively provided with a first bearing and a second bearing, and the first bearing and the second bearing are respectively confined within the housing; The connecting shaft is rotatably connected to the sensor.

2. The two-speed shifting device according to claim 1, characterized in that: It also includes cylindrical pins; The connecting shaft has a first fixing hole; the connecting part has a second fixing hole corresponding to the position of the first fixing hole; the cylindrical pin passes through the first fixing hole and the second fixing hole.

3. The two-gear shifting device according to claim 1, characterized in that: The housing has a first groove, which is positioned opposite to the connection opening; the first bearing is housed in the first groove.

4. The two-gear shifting device according to claim 1, characterized in that: It also includes a bearing housing; the bearing housing passes through the connection opening and is fixed to the sensor; The bearing housing has a through hole that communicates with the interior of the housing, and the second bearing is disposed in the through hole.

5. The two-gear shifting device according to claim 4, characterized in that: The first bearing and the bearing housing respectively abut against the two end faces of the connecting part.

6. The two-speed shifting device according to any one of claims 1-5, characterized in that: It also includes a shift motor, which is connected to the shift finger drive.

7. The two-gear shifting device according to claim 6, characterized in that: A lead screw assembly is provided between the shift motor and the shift finger. One end of the lead screw assembly is fixed to the output shaft of the shift motor, and the other end is fixed to the shift finger.

8. The two-gear shifting device according to claim 7, characterized in that: The shift finger also includes two engaging portions, which are respectively disposed on both sides of the connecting portion, and a receiving area is formed between the two engaging portions; The lead screw assembly is installed in the receiving area.

9. The two-gear shifting device according to claim 8, characterized in that: The engaging portion has an engaging opening at one end away from the connecting portion; The lead screw assembly includes a lead screw nut and a rotating lead screw; the two ends of the lead screw nut are provided with trunnions, which engage with the engaging openings; one end of the rotating lead screw is fixed to the output shaft of the shift motor, and the other end passes through the lead screw nut and extends between the two engaging parts.

10. A two-speed shifting device, characterized in that: It includes a shift fork and a two-speed shifting device as described in any one of claims 1-9; the shift fork is fixedly connected to the shift finger of the two-speed shifting device.

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