Electric gear shifter

Abstract

The utility model discloses an electric gear shifter which comprises a gear shifter shell and further comprises an electric gear shifter mechanism. The movable gear shifter mechanism comprises a lead screw and a nut, and a supporting lug is installed on the side of the nut and matched with the gear shifting fork. The gear shifting fork extends out of the gear shifter shell; the two ends of the lead screw are installed in the gear shifter shell through bearings, and one end of the lead screw extends out of the gear shifter shell and is connected with the gear shifting motor. The gear shifting fork is connected to the gear shifting rod in a sleeved mode, and the gear lever lead screw is vertically installed in the gear shifter shell. The supporting lug can drive the gear shifting fork to rotate around the gear shifting rod. According to the electric gear shifter, a worm and gear structure in a traditional gear shifter is replaced, the novel electric gear shifter is simple in structure, efficient and reliable, and correct and high-precision gear shifting of a speed reducer can be achieved; and meanwhile, the mechanism is compact in structure, high in bearing capacity and lower in cost. The device is simple in structure, convenient to operate, safe, reliable and high in adaptability.

Description

TECHNICAL FIELD

[0001] The utility model relates to gearbox technical field, concretely relates to a kind of electric gear shifters. BACKGROUND

[0002] With the development of new energy electric vehicle technology, new energy reducer develops rapidly, and the electric gear shifter matched with it also emerges as the times require.

[0003] The gear shifter of existing two-gear reducer is currently mainly worm gear structure, and the worm gear gear shifter is noisy, complex in mechanism, heavy in weight, large in size, and the stroke accuracy is not enough during gear shifting.

[0004] Therefore, it is urgent to develop a new linear actuator with low cost and high performance to effectively solve the above technical problems. SUMMARY

[0005] In view of the deficiencies in the prior art, the utility model aims to provide an electric gear shifter to solve the problems of the worm gear structure gear shifter in the prior art, such as loud noise, complex mechanism, heavy weight, large size, and insufficient stroke accuracy during gear shifting.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions: an electric gear shifter includes a gear shifter housing and an electric gear shifter mechanism installed in the gear shifter housing.

[0007] The electric gear shifter mechanism includes a lead screw installed in the gear shifter housing and a nut sleeved on the lead screw, the nut is installed on both sides of the lead screw, and the lead screw is matched with a gear shift fork.

[0008] The gear shift fork extends out of the gear shifter housing.

[0009] The lead screw is installed in the gear shifter housing through bearings at both ends, and one end of the lead screw extends out of the gear shifter housing and is connected to a gear shift motor.

[0010] The gear shift fork is sleeved on a gear shift lever, and the gear shift lever is perpendicular to the lead screw and is installed in the gear shifter housing.

[0011] The lug can drive the gear shift fork to rotate around the gear shift lever.

[0012] The utility model also has the following technical features:

[0013] One end of the gear shift lever is also provided with an angular displacement sensor.

[0014] The angular displacement sensor is connected to the gear shifter housing by bolts and is installed in a fixed position.

[0015] The angular displacement sensor is also connected with the shift lever.

[0016] The shift fork end is connected with the supporting ears installed on both sides of the nut through a U-shaped groove, a through hole is formed in the shift fork, the shift lever passes through the through hole and is connected with the shift fork through an elastic pin.

[0017] A side hole is formed in the side surface of the shift knob housing, and a transition plate is sleeved on the side hole.

[0018] The transition plate comprises coaxially connected first and second transition plates, the outer diameter of the first transition plate is larger than that of the second transition plate, and the inner diameter of the first transition plate is equal to that of the second transition plate.

[0019] The first transition plate is installed outside the side hole, and the second transition plate is installed inside the side hole.

[0020] One end of the shift lever is connected with the shift knob housing through a needle bearing, and the other end is connected with the second transition plate through a needle bearing.

[0021] The angular displacement sensor is installed on the second transition plate, and the angular displacement sensor is arranged between the shift knob housing and the first transition plate.

[0022] An O-shaped rubber sealing ring is further installed between the second transition plate and the shift knob housing.

[0023] The shift knob housing is connected with the speed reducer through bolts.

[0024] A bottom hole is formed in the bottom of the shift knob housing, and the shift fork is connected with the synchronizer ring gear of the speed reducer through the bottom hole.

[0025] The shift motor is fixed on the flange surface of the shift knob housing through bolts.

[0026] Compared with the prior art, the utility model has the following technical effects:

[0027] (I) the electric gear shifter provided by the utility model replaces the worm gear structure in the traditional gear shifter, and the novel electric gear shifter is simple in structure, high in efficiency and reliable, and can realize correct and high-precision gear shifting of the speed reducer.

[0028] (II) the electric gear shifter provided by the utility model is simple in structure, convenient to operate, safe and reliable, and high in adaptability. DRAWINGS

[0029] Figure 1 It is an internal structure diagram of the electric gear shifter.

[0030] Figure 2This is a side view of the internal structure of the electric gear shifter of this utility model.

[0031] Figure 3 This is a schematic diagram of the lead screw structure of this utility model.

[0032] Figure 4 This is a schematic diagram of a worm gear shifter in the prior art.

[0033] The meanings of the labels in the attached diagram are as follows:

[0034] 1-Shifter housing, 2-Electric shifter mechanism, 3-Bearing, 4-Angular displacement sensor, 5-Elastic pin, 6-Transition plate, 7-O-ring rubber seal, 8-Worm, 9-Worm wheel.

[0035] 2-1 Lead screw, 2-2 Nut, 2-3 Lug, 2-4 Shift fork, 2-5 Shift motor, 2-6 Shift lever.

[0036] The specific content of this utility model will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0037] Unless otherwise specified, all components in this invention are made from components known in the prior art.

[0038] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0039] Example 1:

[0040] This embodiment provides an electric gear shifter, such as Figures 1-3 As shown, it includes a shifter housing 1 and an electric shifter mechanism 2 installed inside the shifter housing 1.

[0041] The electric gear shifter mechanism 2 includes a lead screw 2-1 installed in the gear shifter housing 1 and a nut 2-2 sleeved on the lead screw 2-1. The nut 2-2 has lugs 2-3 installed on both sides, and the lugs 2-3 cooperate with the shift fork 2-4.

[0042] The shift fork 2-4 extends out of the shifter housing 1.

[0043] The lead screw 2-1 is mounted inside the shifter housing 1 at both ends via bearings 3, and one end of the lead screw 2-1 extends out of the shifter housing 1 and is connected to the shifter motor 2-5. An internal hole can be drilled at one end of the lead screw 2-1 for easy connection to the shifter motor 2-5.

[0044] like Figure 1The shown screw rod 2-1 and nut 2-2 adopt a ball screw pair.

[0045] The shift fork 2-4 is sleeved on the shift rod 2-6 which is perpendicular to the screw rod 2-1 and is installed in the shifter housing 1.

[0046] The lug 2-3 can drive the shift fork 2-4 to rotate around the shift rod 2-6.

[0047] As shown in the figure, the shifter housing 1 is connected with the reducer, and the left side of the shifter housing 1 is provided with an opening. Figure 1

[0048] The screw rod 2-1 is fixed at both ends by a thrust bearing and the shifter housing, and the rotational motion of the shift motor 2-5 is converted into linear motion.

[0049] The shifter housing 1 is further provided with the shift fork 2-4, one end of the shift fork 2-4 is connected with the reducer synchronizer ring gear, providing shift stroke and shift force, the other end is fixed on the nut 2-2 of the screw rod 2-1, the middle part of the shift fork 2-4 is provided with a circular through hole, and the shift fork 2-4 is connected with the shift rod 2-6 through an elastic pin, realizing synchronous rotation of the two parts.

[0050] The shift motor 2-5 is connected with the screw rod 2-1, providing rotational torque and rotational speed, and the rotational torque and rotational speed are converted into shift force, shift stroke and shift time through the screw rod 2-1.

[0051] The shift rod 2-6 generates an angle with the movement of the shift fork 2-4, and the other end is provided with an angular displacement sensor 4, and the shift stroke of ±15mm is realized through the rotation of the shift fork 2-4.

[0052] As a preferred embodiment of the present application:

[0053] One end of the shift rod 2-6 is further provided with an angular displacement sensor 4, and the angular displacement sensor 4 monitors the corresponding rotation angle of the shift rod 2-6 corresponding to the required shift stroke.

[0054] The angular displacement sensor 4 is connected with the shifter housing 1 by a bolt and is installed in a fixed position.

[0055] The angular displacement sensor 4 is further connected with the shift rod 2-6, and cooperates with the shift motor to complete the shift function.

[0056] The end of the shift fork 2-4 is connected with the lug 2-3 installed on both sides of the nut 2-2 through a U-shaped groove, and the shift fork 2-4 is provided with a through hole, and the shift rod 2-6 passes through the through hole and is connected with the shift fork 2-4 through an elastic pin 5.

[0057] ​The supporting lug 2-3 moves the shift fork 2-4 by cooperating with the U-shaped groove at the end of the shift fork 2-4.

[0058] As a preferred embodiment of the present embodiment:

[0059] The shift lever 2-6 is connected to the shift fork 2-4 through the side hole of the shift lever housing 1.

[0060] The transition plate 6 includes a coaxially connected first transition plate and a second transition plate, and the outer diameter of the first transition plate is greater than that of the second transition plate, and the inner diameter of the first transition plate is equal to that of the second transition plate.

[0061] The first transition plate is installed outside the side hole, and the second transition plate is installed inside the side hole.

[0062] One end of the shift lever 2-6 is connected to the shift lever housing 1 through a needle bearing, and the other end is connected to the second transition plate through a needle bearing.

[0063] The angular displacement sensor 4 is installed on the second transition plate, and the angular displacement sensor 4 is arranged between the shift lever housing 1 and the first transition plate.

[0064] As a preferred embodiment of the present embodiment:

[0065] The second transition plate and the shift lever housing 1 are further provided with an O-shaped rubber sealing ring 7.

[0066] As a preferred embodiment of the present embodiment:

[0067] The shift lever housing 1 is connected to the reducer through bolts.

[0068] The shift lever housing 1 is provided with a bottom hole at the bottom, and the shift fork 2-4 is connected to the reducer synchronizer gear ring through the bottom hole.

[0069] The shift motor 2-5 is fixed on the flange surface of the shift lever housing 1 by bolts.

[0070] The specific working process of the utility model:

[0071] The utility model converts the rotary motion of the shift motor 2-5 into linear motion through the lead screw 2-1, the shift motor 2-5 rotating shaft is connected with the lead screw 2-1, provides the rotary torque and the rotating speed, converts into the shift force, the shift stroke and the shift time through the lead screw 2-1, the shift lever 2-6 generates the angle with the movement of the shift fork 2-4, the other end is provided with the angular displacement sensor 4, realizes the shift stroke of ± 15mm through the rotation of the shift fork 2-4.

[0072] As Figure 4The shown is the gear shifter of two-gear speed reducer of worm gear structure used in the prior art, which has loud noise, complex mechanism, large weight, large volume, and insufficient stroke accuracy during gear shifting.

[0073] The electric gear shifter of the present application is simple in structure, high in efficiency and reliability, and can realize correct and high-precision gear shifting of the speed reducer.

[0074] The above technical solution is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any change or replacement within the technical range disclosed by the present application without creative labor is also covered in the protection scope of the present application.

Claims

1. An electric gear shifter comprising a shifter housing (1), characterized in that, It also includes the electric gear shifter mechanism (2) installed in the gear shifter housing (1); The electric gear shifter mechanism (2) includes a lead screw (2-1) installed in the gear shifter housing (1) and a nut (2-2) sleeved on the lead screw (2-1), both sides of the nut (2-2) are provided with lugs (2-3), and the lugs (2-3) are matched with the gear shifting fork (2-4); The gear shifting fork (2-4) extends out of the gear shifter housing (1); Both ends of the lead screw (2-1) are installed in the gear shifter housing (1) through bearings (3), one end of the lead screw (2-1) extends out of the gear shifter housing (1) and is connected with the gear shifting motor (2-5); The gear shifting fork (2-4) is sleeved on the gear shifting rod (2-6), and the gear shifting rod (2-6) is perpendicular to the lead screw (2-1) and is installed in the gear shifter housing (1); The lugs (2-3) can drive the gear shifting fork (2-4) to rotate around the gear shifting rod (2-6).

2. An electric gear shifter according to claim 1, characterized in that One end of the gear shifting rod (2-6) is also provided with an angular displacement sensor (4); The angular displacement sensor (4) is connected with the gear shifter housing (1) by bolts and is installed in a fixed position; The angular displacement sensor (4) is also connected with the gear shifting rod (2-6); The end of the gear shifting fork (2-4) is connected with the lugs (2-3) installed on both sides of the nut (2-2) through a U-shaped groove, and a through hole is formed in the gear shifting fork (2-4), the gear shifting rod (2-6) passes through the through hole and is connected with the gear shifting fork (2-4) through an elastic pin (5).

3. An electric gear shifter according to claim 2, characterized in that The gear shifter housing (1) is provided with a side hole on the side surface, and a transition plate (6) is sleeved on the side hole; The transition plate (6) includes coaxially connected first and second transition plates, the outer diameter of the first transition plate is larger than that of the second transition plate, and the inner diameter of the first transition plate is equal to that of the second transition plate; The first transition plate is installed outside the side hole, and the second transition plate is installed inside the side hole; One end of the gear shifting rod (2-6) is connected with the gear shifter housing (1) through a needle bearing, and the other end is connected with the second transition plate through a needle bearing; The angular displacement sensor (4) is installed on the second transition plate, and the angular displacement sensor (4) is located between the gear shifter housing (1) and the first transition plate.

4. An electric gear shifter according to claim 3, characterized in that An O-shaped rubber sealing ring (8) is also installed between the second transition plate and the gear shifter housing (1).

5. An electric gear shifter according to claim 1, wherein The gear shifter housing (1) is connected with the speed reducer through bolts; The gear shifter housing (1) is provided with a bottom hole at the bottom, and the gear shifting fork (2-4) is connected with the speed reducer synchronizer ring through the bottom hole; The gear shifting motor (2-5) is fixed on the flange surface of the gear shifter housing (1) by bolts.

Images