TWM472634U - Shifting mechanism for vehicle - Google Patents

Description

Vehicle shifting mechanism

The present invention relates to a vehicle shifting mechanism, and more particularly to a vehicle shifting mechanism that can prevent the first spring and the second spring from pushing the shifting hub away from the initial position to enhance the driving safety of the vehicle.

As shown in FIG. 1, the shifting mechanism 1 of the conventional vehicle is engaged with the gear 121 on the shifting hub shaft 12 by a gear 111, and the shifting hub shaft 121 is sleeved with a change. The shifting hub 13 is slidable on the shifting hub shaft 12, and the shifting hub 13 is further provided with a gear slot rail 131 on the two sides of the shifting hub 13 There are provided, for example, a forward gear point, a neutral gear point, a reverse gear point, and the like; the two side ends of the shifting hub 13 are respectively provided with springs 132.

The shifting groove 131 of the shifting hub 13 is connected to a shifting fork 14 , and the shifting fork 14 is sleeved on the shifting guide 15 , and one end of the shifting fork 14 is inserted into the shifting position of the shifting hub 13 . The other end of the slot slide rail 131 is inserted into the slider 161 of the main shaft 16, and the slider 161 can be freely displaced left and right on the main shaft 16, and the forward gear 17 is respectively disposed on the two sides of the slider 161. And the reverse gear 18, the forward gear 17 and the reverse gear 18 are respectively provided with snap holes 171, 181 for the slider 161 to be stuck.

The shifting mechanism 1 can make the shifting hub 13 displace left or right on the shifting hub shaft 12 by operating the shifting lever 11 by the driver, which is located at the two sides of the shifting valley 13 One of the springs 132 will be in a retracted shape, and the shifting valley 13 will cause the shifting fork 14 to slide in the gear slot slide rail 131 on the shifting hub 13, and the shifting fork 14 can be driven. The slider 161 is displaced left or right on the main shaft 16 to complete the purpose of vehicle shifting.

However, when the vehicle wants to shift gears, the slider 161 is to be embedded in the forward gear. 17 or when the hole 171, 181 in the gear 18 is reversed, it may not be inserted into the hole 171, 181 of the forward gear 17 or the reverse gear 18 at the beginning, so the forward gear 17 or the reverse gear 18 will Forming a back pressure on the slider 161, the back pressure is absorbed by the spring 132 after the shift fork 14 and the shift valley 13, and a pre-pressure is formed by the contraction of the spring 132, when the slider 161 When the engaging holes 171 and 181 of the forward gear 17 or the reverse gear 18 can be inserted, the pre-pressure of the spring 161 can smoothly fit the slider 161 into the holes 171 and 181 of the forward gear 17 or the reverse gear 18. Complete the shifting action.

The above-described shifting mechanism 1 of the conventional vehicle can be achieved by the above configuration. For the purpose of vehicle shifting, there are the following disadvantages. The springs 132 disposed at the two side ends of the shifting hub 13 are difficult to control the length of the springs of the same spring with the same elastic tension, so The length of the compressed spring and the elastic tension must be very precisely matched, otherwise the initial position of the shifting hub 13 (ie, the neutral gear position) is pushed away by the spring 132, and the shifting hub The deviation of the initial position of 13 (i.e., the neutral gear position) poses a serious threat to the vehicle's driving.

Therefore, how to provide a fault that can effectively solve the shifting mechanism 1 of the conventional vehicle, and a safe shifting mechanism has been an urgent problem for the vehicle manufacturer.

The main purpose of the present invention is to provide a vehicle shifting mechanism, whereby the conventional vehicle shifting mechanism can be overcome, which causes the initial position of the shifting hub (ie, the neutral gear position) to be pushed away by the spring to cause a deviation, and thus the vehicle The driving caused a serious threat.

The main technical means adopted for the above purpose is to provide a vehicle shifting mechanism, the shifting mechanism comprising at least a shifting hub group, a shifting fork set and a slider set; the shifting hub group has a shifting hub shaft, a shifting hub axially displaceable on the shifting hub shaft, a set of first springs disposed on the shifting hub shaft and located at the first end of the shifting hub, and a set of a second spring on the shifting hub shaft and located at the second end of the shifting hub; the shifting fork set has a shifting guide rod and a set of forks disposed on the shifting guide rod, the fork is connected at one end The other end of the shifting hub is coupled to the slider of the slider set, the shifting fork can be axially displaced by the shifting hub and the shifting guide rod; the slider set has a spindle a set of sliders disposed on the spindle, the slider can The shifting hub is axially displaced on the main shaft by the shifting fork; the shifting hub is synchronously rotated with the shifting hub shaft by a radial positioning mechanism, and the first end is provided with a first receiving portion, the first end The second end is provided with a second receiving portion, and the shifting hub shaft is sleeved with a first buckle and a second buckle. The first buckle can be used to fix the first spring to the shifting hub. The second buckle is disposed at the second end of the shifting hub, and the first retaining ring and the first spring are provided with a first retaining ring, the second retaining ring A second retaining ring is disposed between the second spring, and the outer diameter of the first retaining ring is greater than the first retaining ring, and the outer diameter of the second retaining ring is larger than the second retaining ring.

The effect that this creation can achieve by the above technical means lies in: a first buckle ring and a first retaining ring are disposed on the first end side of the shifting hub, and a second buckle ring and a second retaining ring are disposed on the second end side of the shifting hub, wherein the first buckle and the second buckle are The ring limits the axial displacement range of the shifting hub on the shifting hub shaft, and the first and second retaining rings are used to abut the first spring and the second spring, thereby The aspect ensures that the shifting hub has a pre-pressure, and on the other hand, the spring force of the first spring and the second spring is directly directly abutted against the shifting hub when the shifting operation is not performed after the completion of the shifting, The first spring and the second spring can be prevented from pushing the shifting hub away from the correct in-position position (especially the neutral position of the initial position), and the driving safety of the vehicle can be improved.

1‧‧‧shifting mechanism

11‧‧‧Shift lever

111‧‧‧ Gears

12‧‧‧Shift hub axle

121‧‧‧ Gears

13‧‧‧Shifting hub

131‧‧‧Shift rails

132‧‧‧ Spring

14‧‧‧ fork

15‧‧‧ fork guide

16‧‧‧ Spindle

161‧‧‧ Slider

17‧‧‧ Forward gear

171‧‧‧Kakong

18‧‧‧Reverse gear

181‧‧‧Kakong

2‧‧‧Shift hub

21‧‧‧Shift hub axle

21a‧‧‧ Radial positioning mechanism

21a1‧‧‧ cogging

211‧‧‧Shift gear

212‧‧‧Shift motor

213‧‧‧Reducing gear

214‧‧‧ Locator

215‧‧‧ first buckle

215a‧‧‧ third buckle

216‧‧‧First retaining ring

216a‧‧ Third ring

217‧‧‧second buckle

217a‧‧‧fourth buckle

218‧‧‧second retaining ring

218a‧‧ Fourth ring

22‧‧‧Shifting hub

22a‧‧‧Rack

221‧‧‧ first end

222‧‧‧ second end

223‧‧‧ stall rails

224‧‧‧First Housing Department

2241‧‧‧First end edge

2242‧‧‧The first bottom edge

225‧‧‧Second accommodating department

2251‧‧‧second edge

2252‧‧‧Second bottom edge

23‧‧‧First spring

24‧‧‧Second spring

3‧‧‧ fork group

31‧‧‧Fork guide

32‧‧‧ fork

4‧‧‧ slider group

41‧‧‧ Spindle

42‧‧‧ Slider

43‧‧‧ Forward gear

44‧‧‧Reverse gear

A‧‧‧Shifting mechanism

Figure 1 is a schematic diagram of a conventional vehicle shifting mechanism.

Figure 2 is a three-dimensional schematic diagram of the shifting mechanism of the present vehicle.

Figure 3 is a perspective view of another angle of the shifting mechanism of the present vehicle.

Figure 4 is a schematic diagram of the neutral position of the shifting mechanism of the present vehicle.

Figure 5 is a schematic diagram of the waiting position of the shifting mechanism of the present vehicle.

Figure 6 is a schematic diagram of the completion of the shifting mechanism of the vehicle.

In order to make it easier for your examiner to understand the structure of the creation and the effect it can achieve, the following is a description of the following; first, please refer to Figures 2, 3 and 4, the shifting mechanism A includes at least one shifting hub. Group 2, a fork set 3 and a slider set 4.

The shifting hub group 2 has a shifting hub shaft 21, a shifting hub 22, and a first a spring 23 and a second spring 24; a shift gear 211 is disposed at one end of the shift hub shaft 21, the shift gear 211 is coupled to the shift motor 212, and a reduction gear set is disposed between the shift motor 212 and the shift gear 211. 213. In practice, the shifting gear 211 can also be coupled to the shifting lever as is conventional. One side of the shifting gear 211 is provided with a positioner 214, and the positioner 214 ensures the shifting of the shifting axle 21 The shifting hub 22 is sleeved on the shifting hub shaft 21, and the shifting hub 22 is coupled to the shifting hub shaft 21 by a radial positioning mechanism 21a. The shifting valley 22 is provided with a plurality of racks 22a and a spline structure formed by a plurality of slots 21a1 on the shifting hub shaft 22, whereby the shifting hub 22 is movable on the shifting hub shaft 21. The shifting hub 22 has a first end 221, a second end 222, and a gear rail 223. The first end 221 is provided with a first receiving portion 224. The first receiving portion 224 is The first accommodating portion 224 is formed with a recess in the center of the shifting hub 22, and the first accommodating portion 224 has a first end edge portion 2241 and a first bottom edge. 2242, the second end 222 is provided with a second accommodating portion 225, and the second accommodating portion 225 is implemented by a groove, that is, the second accommodating portion 225 is recessed toward the center of the shifting hub 22 The second receiving portion 225 has a second end edge portion 2251 and a second bottom edge portion 2252; the shifting hub shaft 21 is sleeved with a first buckle adjacent to the first end 221 side of the shifting hub 22 a ring 215 and a first retaining ring 216, the outer diameter of the first retaining ring 215 is smaller than the first retaining ring 216, and the outer diameter of the first retaining ring 215 is smaller than the inner diameter of the first receiving portion 224. The outer diameter of the first retaining portion 224 is greater than the inner diameter of the first receiving portion 224. When the shifting hub 22 is displaced toward the first end 221, the first end portion 2241 of the first receiving portion 224 can be pressed. The first retaining ring 216 can engage the first spring 23 at the first end 221 of the shifting hub 22 while avoiding the first spring 23 from the shifting hub 22 The first end 221 is formed to be pressed, and the first bottom edge portion 2242 of the first receiving portion 224 does not pass over the first buckle 215; the shifting hub shaft 21 is adjacent to the second end of the shifting hub 22 222 side sleeve is provided with a second buckle 217 and a second block 218, the outer diameter of the second buckle 217 is smaller than the second ring gear 218, and the outer diameter of the second buckle 217 is smaller than the second accommodating portion 22 The inner diameter of the second retaining ring 224 is greater than the inner diameter of the second receiving portion 225. When the shifting hub 22 is displaced toward the second end 222, the second end of the second receiving portion 224 The second portion 218 can press the second retaining ring 218. The second retaining ring 217 can engage the second spring 24 at the second end 222 of the shifting hub 22 while avoiding the second spring 24 The second end 222 of the shifting hub 22 is pressed against, and the second bottom edge portion 2252 of the second receiving portion 225 does not pass over the second buckle 217; the present invention is further applicable to the shifting hub shaft 21, a third buckle ring 215a and a fourth buckle ring 217a, and a third retaining ring 216a and a fourth retaining ring 218a, the third buckle ring 215a is corresponding to the first buckle ring 215, that is, the third The buckle 215a and the first buckle 215 are respectively located on two sides of the first spring 23, and the fourth buckle 217a is disposed corresponding to the second buckle 217, that is, the fourth buckle 217a and the The second retaining ring 217 is located on the two sides of the second spring 24, the third retaining ring 216a is located between the third retaining ring 215a and the first spring 23, and the fourth retaining ring 218a is located at the fourth Buckle 217a and second Between the springs 24, the first spring 23 and the second spring 24 can be blocked on both ends; the first spring 23 and the second spring 24 are sleeved on the shifting hub shaft 21, Specifically, the first spring 23 is located on the first end 221 side of the shifting hub 22, and the second spring 24 is located on the second end 222 side of the shifting hub, the first spring 23 is adjacent to the The first end 221 of the shifting hub 22 abuts against the first retaining ring 216 , and the second spring 24 abuts the second end 222 of the shifting hub 22 against the second retaining ring 218 . on.

The fork set 3 has a shifting guide 31 and a shifting fork 32. The shifting fork 32 is sleeved on the shifting guide 31 and can move axially on the shifting guide 31. One end of the shifting fork 32 is embedded on the gear rail 223 of the shifting hub 22, and the other end of the shifting fork 32 is coupled to the slider 42 of the slider set 4.

The slider set 4 has at least a main shaft 41 and a slider 42. The slider 42 is sleeved on the main shaft 41. The slider 42 is driven by the shifting fork 32 to perform left and right displacement on the main shaft 41. When the slider 42 is driven by the shifting fork 32 to the left and right of the main shaft 41, the slider 42 can be embedded in the forward gear 43 or the reverse gear 4 provided on the main shaft 41. 4, in order to make the vehicle forward or backward.

For the implementation of this creation, please also refer to Figure 2, 4, 5 and 6 for common reference. When the driver of the vehicle wants to change the gear position of the vehicle, the shifting gear 212 is rotated by the speed reducing gear set 213 by the shifting motor 212, and the shifting gear 211 will rotate the shifting hub shaft 21 again. At the same time, the shifting hub 22 can be synchronously rotated, and the shifting hub 22 can axially displace the shifting fork 32 on the shifting guide rod 31, whereby the shifting fork 32 can drive the sliding block 42. The left and right displacements are made, and the slider 42 can be embedded in the forward gear 43 or the reverse gear 44 provided on the main shaft 41, thereby achieving the vehicle shifting operation.

Please refer to Figure 4, 5, and 6 for reference. When the shifting mechanism A of this creation When the shifting hub 22 is not axially moved on the shifting hub axle 21 (ie, when the shifting is completed), that is, the shifting hub 22 is unaffected by the first spring 23 or the second spring 24 When the spring force acts, the position of the shifting hub 22 is between the first retaining ring 216 and the second retaining ring 218, as shown in FIG. 4; when the driver changes the gear position (when the gear is switched) As shown in FIG. 5, just when the slider 42 cannot be immediately inserted into the forward gear 43 or the reverse gear 44 (ie, waiting for the gear), since the shifting hub 22 is used as the shaft on the shifting hub shaft 21 The second spring 24 on the second end 222 side of the shifting hub 22 is depressed by the second end 222 of the shifting hub 22, so that the second spring 24 can be formed. a pre-pressure, and the second end 222 of the shifting hub 22 is constrained by the second buckle 217, so that when the slider 42 can be embedded in the forward gear 43 or the reverse gear 44, the second spring The pre-pressure of 24 can cause the slider 42 to be embedded in the forward gear 43 or the reverse gear 44 to complete the shifting action, as shown in FIG. 6; Then, the first spring 23 on the first end 221 side of the shifting hub 22 forms a pre-pressure, and the action mode is completely the same, so it will not be described again.

The effect of the present creation is that the first end 221 side of the shifting hub 22 is The first buckle 215 and the first retaining ring 216 are disposed, and the second buckle 217 and the first retaining ring 218 are disposed on the second end 222 side of the shifting hub 22, wherein the first buckle 215 and the second buckle The ring 217 limits the axial displacement range of the shifting hub 22 on the shifting hub axle 21, and the first spring 23 and the second spring 24 are provided by the first retaining ring 216 and the second retaining ring 218. Abutting, thereby ensuring that the shifting hub 22 has a pre-pressure on the one hand, and When the shifting action is not performed after the completion of the shifting, the spring force of the first spring 23 and the second spring 24 directly abuts against the shifting hub, and the first spring 23 and the second spring 24 are prevented from being The shifting hub 22 is pushed away from the correct in-position position (especially the neutral position of the initial position), which improves the driving safety of the vehicle.

2‧‧‧Shift hub

21‧‧‧Shift hub axle

21a‧‧‧ Radial positioning mechanism

211‧‧‧Shift gear

212‧‧‧Shift motor

213‧‧‧Reducing gear

214‧‧‧ Locator

215a‧‧‧ third buckle

216‧‧‧First retaining ring

217a‧‧‧fourth buckle

218‧‧‧second retaining ring

22‧‧‧Shifting hub

223‧‧‧ stall rails

23‧‧‧First spring

24‧‧‧Second spring

3‧‧‧ fork group

31‧‧‧Fork guide

4‧‧‧ slider group

43‧‧‧ Forward gear

44‧‧‧Reverse gear

A‧‧‧Shifting mechanism

Claims (8)

A vehicle shifting mechanism includes at least a shifting hub group, a shifting fork set and a slider set; the shifting hub set has a shifting hub shaft and an axial axis on the shifting hub shaft a shifting shifting hub, a first spring disposed on the shifting hub shaft and located at the first end of the shifting hub, and a set on the shifting hub shaft and located at the second end of the shifting hub a second spring; the fork set has a fork guide and a set of forks disposed on the fork guide, the fork is connected to the shift hub at one end, and the other end is coupled to the slider set On the slider, the shifting fork can be axially displaced on the shifting guide rod by the shifting hub; the slider set has a main shaft and a set of sliders disposed on the main shaft, the slider can be Being axially displaced by the shifting fork on the main shaft; wherein the shifting hub is synchronously rotated with the shifting hub shaft by a radial positioning mechanism, and the first end is provided with a first receiving The second end is provided with a second receiving portion, and the shifting hub shaft is sleeved with a first buckle and a second buckle, and the first buckle can make the first elastic The second buckle is disposed on the second end of the shifting hub, and the first spring is disposed between the first spring and the first spring. a second retaining ring is disposed between the second retaining ring and the second spring. The outer diameter of the first retaining ring is greater than the first retaining ring, and the outer diameter of the second retaining ring is greater than the second retaining ring. The vehicle shifting mechanism of claim 1, wherein the shifting hub is in the first gear when the shifting hub is in the neutral position and is not affected by the first spring or the second spring force. Between the ring and the second retaining ring. The vehicle shifting mechanism according to claim 1, wherein one end of the shifting hub shaft is provided with a shifting gear, the shifting gear is coupled to the shifting motor, and the shifting motor and the shifting gear are provided with a deceleration a gear set; one side of the shift gear is provided with a positioner. The vehicle shifting mechanism of claim 1, wherein the first receiving portion is a groove, the first receiving portion has a first end edge portion and a first bottom edge portion; the shifting portion a first retaining ring and a first retaining ring are disposed on the first end of the shifting hub, and the outer diameter of the first retaining ring is smaller than the inner diameter of the first receiving portion. The outer diameter of the ring is larger than the inner diameter of the first receiving portion, thereby the first end of the first receiving portion when the shifting hub is displaced toward the first end The rim portion can press the first retaining ring, and the first bottom edge portion of the first receiving portion does not pass over the first retaining ring. The vehicle shifting mechanism of claim 1, wherein the second receiving portion is a groove, the second receiving portion has a second end edge portion and a second bottom edge portion; the shifting portion The second end of the hub shaft is disposed adjacent to the second end of the shifting hub, and a second retaining ring and a second retaining ring have an outer diameter smaller than an inner diameter of the second receiving portion. The outer diameter of the ring is larger than the inner diameter of the second receiving portion, so that when the shifting hub is displaced toward the second end, the second end portion of the second receiving portion can press the second retaining ring. And the second bottom edge portion of the second receiving portion does not pass over the second buckle. The vehicle shifting mechanism of claim 1, wherein the shifting hub shaft is further provided with a third buckle and a fourth buckle, and a third retaining ring and a fourth gear. ring. The vehicle shifting mechanism of claim 6, wherein the third buckle is disposed corresponding to the first buckle, that is, the third buckle and the first buckle are respectively located The second side of the first spring is disposed on the two sides of the second spring, that is, the fourth buckle ring and the second buckle ring are respectively located on two sides of the second spring, the third retaining ring The third retaining ring is located between the third buckle and the first spring, and the fourth retaining ring is located between the fourth buckle and the second spring. The vehicle shifting mechanism according to claim 1, wherein the radial positioning mechanism is a flower formed by the plurality of racks in the shift valley and the plurality of slots on the shift hub shaft. Key construction.