CN215334263U

CN215334263U - Automobile limited slip induction differential lock locking device

Info

Publication number: CN215334263U
Application number: CN202121242529.6U
Authority: CN
Inventors: 李连利; 于斌; 吴小东
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2021-12-28
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a locking device of a limited slip induction differential lock of an automobile, which comprises two permanent magnet assemblies, two induction coil assemblies, a sun gear and planet gears, wherein the two sun gears are arranged in parallel relatively, the two planet gears are arranged in parallel relatively, the sun gear and the planet gears are mutually meshed to form a ring, the two permanent magnet assemblies are respectively arranged at two sides of the planet gears, the induction coil assemblies are sleeved and surrounded outside the permanent magnet assemblies, and the two induction coil assemblies are respectively arranged at two sides of the planet gears. When the permanent magnet assembly and the induction coil assembly rotate relatively, reverse locking force can be generated between the permanent magnet assembly and the surrounding induction coil assembly, and the faster the relative rotation speed is, the stronger the locking force is. The space of the device is fully utilized, the locking force is obtained to the maximum extent and quickly, the locking force is strong, and the reaction speed is high. The locking force is adjusted by the variable resistor, and a better using effect can be achieved.

Description

Automobile limited slip induction differential lock locking device

Technical Field

The utility model relates to an automobile running control device, in particular to an automobile limited slip induction differential lock locking device.

Background

The differential is arranged between the driving wheels at the left side and the right side of the automobile, and when the automobile turns or runs on an uneven road surface, the differential can ensure that the driving wheels at the left side and the right side have different rotating speeds when the strokes are unequal. But the existence of differential mechanism makes the car the unable effective transmission of power when one side drive wheel skids, has then appeared limited slip differential mechanism, limited slip differential mechanism with the differential mechanism locking when one side wheel of car skids, make the drive wheel of left and right sides all can obtain power to the uneven problem of power transmission that appears when one side wheel skids of solution car that can be better. The existing automobile limited slip induction differential lock locking device has various forms, is mostly mechanical, has high requirements on manufacturing and processing precision and high manufacturing cost, has higher requirements on speed during starting, and can complete the locking of a differential mechanism at low speed or when stopping. Therefore, the utility model discloses the people has designed "a car response differential mechanism locking device" that realizes the differential locking with the electromagnetic induction principle to obtain utility model patent right, the patent number is "ZL 201920136211.6". The device has the advantages of simple manufacturing and processing technology, low requirement, low manufacturing cost, no requirement on speed and capability of playing a certain differential locking role almost in the whole speed range. However, the device can only generate electromagnetic induction at four corner positions corresponding to the permanent magnets, the induction force is small, and the locking force and the reaction speed are deficient to a certain extent.

SUMMERY OF THE UTILITY MODEL

In view of the above, the utility model aims to provide a locking device of a limited slip induction differential lock of an automobile, which has strong locking force and high reaction speed.

According to one aspect of the utility model, the locking device for the limited-slip induction differential lock of the automobile comprises two permanent magnet assemblies, two induction coil assemblies, a sun gear and planetary gears, wherein the two sun gears are arranged in parallel relatively, the two planetary gears are arranged in parallel relatively, the sun gear and the planetary gears are meshed with each other to form a ring, the two permanent magnet assemblies are arranged on two sides of the planetary gears respectively, the induction coil assemblies are sleeved and wound outside the permanent magnet assemblies, and the two induction coil assemblies are arranged on two sides of the planetary gears respectively.

In some embodiments, the permanent magnet assembly includes a permanent magnet frame and permanent magnets, the permanent magnet frame is in a shape of a disk, the edge of the permanent magnet frame is provided with a plurality of grooves, the permanent magnets are embedded in the grooves, the permanent magnets and the grooves are arranged in a plurality in a one-to-one correspondence, and the poles of the permanent magnets N, S are arranged in a staggered manner.

In some embodiments, the number of the permanent magnets is an even number of 4 to 20.

In some embodiments, the induction coil assembly includes solid fixed ring, iron core and winding coil, the one end and the solid fixed ring fixed connection of iron core, the other end of iron core extends to solid fixed ring's center, the winding coil encircles outside the iron core, iron core and winding coil one-to-one set up to the multiunit and be ring-type distribution in solid fixed ring's inboard.

In some embodiments, the plurality of sets of winding coils are connected in series, with adjacent winding coils having opposite winding directions.

In some embodiments, the number of the winding coils is an even number of 4-20, each group of the winding coils is set to 10-40 turns, and the winding coils are copper enameled wires with diameters of 0.1-2 mm.

In some embodiments, the induction coil assembly further comprises a variable resistor, a circuit switch in series with the winding coil, and a resistance control device in parallel with the variable resistor.

In some embodiments, the resistance value of the variable resistor is 1-20 Ω.

In some embodiments, the limited-slip induction differential lock locking device for an automobile further comprises a planetary carrier, a first output shaft and a driven bevel gear, wherein the first output shaft penetrates through the driven bevel gear and is rotatably connected with the driven bevel gear, one end of the first output shaft is fixedly connected with one of the sun gears, one end of the planetary carrier is fixedly connected with one side of the driven bevel gear, and the induction coil assembly is fixed on one side of the planetary carrier.

In some embodiments, the limited slip induction differential lock locking device of the vehicle further comprises a connecting shaft penetrating through and rotatably connected with the planetary carrier, the center of the planetary gear is fixedly connected with one end of the connecting shaft, and the other end of the connecting shaft is fixedly connected with the permanent magnet assembly.

The utility model has the beneficial effects that: the permanent magnet assemblies are arranged on two sides of the planetary gear, and the induction coil assemblies are wound outside the permanent magnet assemblies. When the permanent magnet assembly and the induction coil assembly rotate relatively, reverse locking force can be generated between the permanent magnet assembly and the surrounding induction coil assembly, and the faster the relative rotation speed is, the stronger the locking force is. The surrounding induction coil assembly and the permanent magnet assembly are arranged in a surrounding mode, so that the winding coils in any group of induction coil assemblies can be induced simultaneously. The space of the device is fully utilized, the locking force is obtained to the maximum extent and quickly, the locking force is strong, and the reaction speed is high. The locking force is adjusted by the variable resistor, and a better using effect can be achieved.

Drawings

FIG. 1 is a schematic structural diagram of a limited slip induction differential lock locking device for an automobile according to an embodiment of the present invention;

FIG. 2 is a schematic front view of a portion of the limited slip induction differential lock locking apparatus shown in FIG. 1;

FIG. 3 is a schematic structural view of a permanent magnet frame of the limited slip induction differential lock locking apparatus of an automobile;

FIG. 4 is a schematic diagram of the permanent magnet of the limited slip induction differential lock locking apparatus of an automobile;

FIG. 5 is a schematic structural view of an induction coil assembly of the limited slip induction differential lock locking apparatus of an automobile;

fig. 6 is a circuit diagram of an induction coil assembly of the limited slip induction differential lock locking apparatus for an automobile.

Detailed Description

The following describes the present invention in further detail with reference to the accompanying drawings.

Fig. 1 to 6 schematically show a limited slip induction differential lock apparatus for a vehicle according to an embodiment of the present invention.

Referring to fig. 1 and 2, the limited slip induction differential lock locking apparatus for an automobile includes a permanent magnet assembly 1, an induction coil assembly 2, a sun gear 3, planetary gears 4, a planetary carrier 5, a first output shaft 6, a driven bevel gear 7, a connecting shaft 8, a second output shaft 9, and a drive bevel gear 10. The sun gears 3 are arranged in parallel, the planet gears 4 are arranged in parallel, and the sun gears 3 and the planet gears 4 are sequentially meshed with each other to form a ring. One end of the first output shaft 6 is fixedly connected with the center of one of the sun gears 3, and the other end of the first output shaft 6 is connected with one wheel of the automobile. One end of the second output shaft 9 is connected with the other sun gear 3, and the other end of the second output shaft 9 is connected with the other wheel of the automobile. When the two automobile wheels rotate synchronously, the two sun gears 3 rotate in parallel to drive the two planet gears 4 to rotate around the axes of the sun gears 3 without autorotation. When the rotation speeds of the two vehicle wheels are not the same, the planetary gear 4 revolves around the axis of the sun gear 3 and simultaneously rotates.

The center of the drive bevel gear 10 is connected to a driving device of the automobile through an input shaft 101, and the drive bevel gear 10 is engaged with the driven bevel gear 7 and can drive the driven bevel gear 7 to rotate. The first output shaft 6 penetrates through the center of the driven bevel gear 7 and is rotatably connected with the driven bevel gear 7, the driven bevel gear 7 rotates to drive the two planetary gears 4 to revolve, and the two planetary gears 4 revolve to drive the two sun gears 3 to rotate so as to drive the automobile wheels to rotate. One end of the planet carrier 5 is fixedly connected with one side of the driven bevel gear 7, and the planet carrier 5 and the driven bevel gear 7 can be fixedly connected through screws so as to be convenient to detach or replace. The carrier 5 is provided in two pieces and corresponds to the two planetary gears 4, respectively. Two connecting blocks 51 are further arranged between the two planetary gear carriers 5, and the first output shaft 6 and the second output shaft 9 movably penetrate through the two connecting blocks 51.

Referring to fig. 3, the permanent magnet assemblies 1 are arranged in two pieces and are respectively located at two sides of the planetary gear 4, the induction coil assemblies 2 are sleeved and wound outside the permanent magnet assemblies 1, and the induction coil assemblies 2 are arranged in two pieces and are respectively located at two sides of the planetary gear 4. The induction coil assembly 2 is fixed to one side of the carrier 5. The permanent magnet assembly 1 comprises a permanent magnet frame 11 and a permanent magnet 12, wherein the permanent magnet frame 11 is disc-shaped, and the permanent magnet frame 11 can be formed by stacking solid silicon steel sheets. The edge of the permanent magnet frame 11 is provided with a plurality of grooves 111, the permanent magnet 12 is embedded in the grooves 111, and the magnetic pole direction of the permanent magnet 12 is opposite to the center of the permanent magnet frame 11. The permanent magnets 12 are provided in plural in one-to-one correspondence with the grooves 111, and N, S poles of the plural permanent magnets 12 are staggered. The number of the permanent magnets 12 and the number of the grooves 111 may be set to an even number of 4 to 20.

Referring to fig. 4 to 6, the induction coil assembly 2 includes a fixed ring 21, an iron core 22, a winding coil 23, a variable resistor 24, a circuit switch 25, a resistance control device 26, and a support frame 27. The fixing ring 21 is in a hollow circular ring shape, a first connecting block 211 is fixedly arranged at one end of the fixing ring 21, and the first connecting block 211 is fixedly connected with the driven bevel gear 7. The other end of the fixing ring 21 is fixedly provided with a second connecting block 212, and one side of the second connecting block 212 is fixedly provided with a bayonet 213. The planet gear carrier 5 is provided with a pin hole, and the pin 213 is inserted into the pin hole and fixed with the pin hole by adopting bolt or interference fit and bolt fixation. The iron core 22 is fixed with the fixing ring 21 as a whole, the other end of the iron core 22 extends to the center of the fixing ring 21, and the iron core 22 is formed by stamping and overlapping small thin silicon steel sheets. The winding coils 23 surround the iron core 22, and the iron core 22 and the winding coils 23 are correspondingly arranged in multiple groups one by one and annularly distributed on the inner side of the fixed ring 21. A plurality of sets of iron cores 22 and winding coils 23 surround the permanent magnet assembly 1 with a certain gap from the permanent magnet assembly 1.

The sets of winding coils 23 are connected in series, and the winding directions of adjacent winding coils 23 are opposite. The number of the winding coils 23 may be set to an even number of 4 to 20, and the winding coils 23 may be provided in one-to-one correspondence with the permanent magnets 12. Each group of winding coils 23 is set to 10-40 turns. The variable resistor 24, the circuit switch 25 and the winding coil 23 are connected in series to form a series loop, and the coils of the two induction coil assemblies 2 are arranged in parallel. The resistance value of the variable resistor 24 is 1-20 omega. The winding coil 23 of one induction coil assembly 2 is formed by sequentially winding a copper enameled wire with the diameter of 0.1-2 mm around each iron core 22 and then connecting the enameled wire with the variable resistor 24 in series.

The resistance control device 26 is connected in parallel with the variable resistor 24 and can control the resistance of the variable resistor 24. The resistance control device 26 is provided in a structure like a solenoid valve, and the resistance control device 26 includes a sleeve 261, an armature 262, a sleeve coil 263, a return spring, and a pole core. The sleeve coil 263 is connected to the series circuit, and the sleeve coil 263 is sleeved outside the sleeve 261. One end of the sleeve 261 is closed, the return spring and the magnetic pole core are located in the sleeve 261, and one ends of the return spring and the magnetic pole core are fixed at the closed end of the sleeve 261. One end of the armature 262 is inserted into the other end of the sleeve 261. One end of the armature 262 abuts against the other end of the return spring and faces the pole core, and the other end of the armature 262 is fixedly connected to the potential contact of the variable resistor 24. The armature 262 and the pole core are made of ferromagnetic material, and the sleeve 261 and the return spring are made of non-ferromagnetic material. When current flows through the sleeve coil 263, the pole core is magnetized to generate attraction force to attract the armature 262 to overcome the resistance of the return spring and move towards the pole core, so as to drive the potential contact of the variable resistor 24 to move. The larger the current, the stronger the attraction force, the larger the displacement of the potential contact. When no current flows through sleeve coil 263, the return force of the return spring returns armature 262.

The support frame 27 is fixed on the outer side of the fixing ring 21, a bearing is arranged at the center of the support frame 27, the end part of the connecting shaft 8 is connected with the bearing, the gap between the permanent magnet assembly 1 and the induction coil assembly 2 can be stabilized, and the stable operation of the permanent magnet assembly 1 is ensured.

The connecting shaft 8 penetrates through the planet carrier 5 and is rotatably connected with the planet carrier 5 through a bearing, the center of the planet gear 4 is fixedly connected with one end of the connecting shaft 8, and the other end of the connecting shaft 8 is fixedly connected with the center of the permanent magnet assembly 1. The planetary gear 4 rotates to drive the connecting shaft 8 to rotate, so as to drive the permanent magnet assembly 1 to rotate. The permanent magnet assembly 1 rotates to change the magnetic flux in the induction coil assembly 2, so that an induced current is generated in the winding coil 23, and the current flows through the variable resistor 24 to consume electric power.

When the automobile is in a good road condition, the limited slip induction differential lock is not needed to induce locking running, and the normally closed circuit switch 25 is used, so that the device has no influence on the normal running of the automobile.

When the automobile runs on a general road surface, the variable resistor 24 can be adjusted to the maximum position of 20 omega, the driving bevel gear 10 drives the driven bevel gear 7 to rotate, and the driven bevel gear 7 rotates to drive the planet gear carrier 5 to rotate and drive the planet gear 4 to rotate. When the automobile does not run at a different speed, and the planetary gear 4 only revolves and does not rotate, the permanent magnet assembly 1 revolves along with the planetary gear 4, the total magnetic flux in the induction coil assembly 2 is unchanged, no induction current is generated, and the device has no influence on the normal running of the automobile.

When the automobile turns and runs at a different speed, the planet gear 4 revolves and rotates, the rotation speed is low, the total magnetic flux of the induction coil assembly 2 changes, the induced current is low, and the current can cause weak obstruction locking on the differential running of the automobile. When the automobile slightly slips during running, the planetary gear 4 revolves and rotates, the rotation speed is higher than that during normal differential, the induced current is increased, the planetary gear tends to rotate and lock, the slightly induced locking state is achieved, and the passing ability of the automobile is improved.

When the vehicle is driven on a wet road, the variable resistor 24 is adjusted to the middle 10 Ω position. When the tire skids, the planet gear 4 revolves and rotates around the sun gear 3, meanwhile, the permanent magnet assembly 1 can follow the planet gear 4 to revolve and rotate, the rotation speed is increased, the total magnetic flux change of the induction coil assembly 2 is accelerated, large induction current is generated, the planet gear rotation locking trend is increased, the first output shaft 6 and the second output shaft 9 rotate in a locking trend, and the vehicle trafficability is improved.

When the automobile runs in a severe environment, the variable resistor 24 is adjusted to the position of 1 omega, when one tire is driven to rotate and the other tire rotates in an idle mode through a pothole road surface, the rotation speed of the planetary gear 4 is high, the planetary gear 4 drives the permanent magnet assembly 1 to rotate at a high speed, the total magnetic flux change of the induction coil assembly 2 is accelerated rapidly, the induction current is increased rapidly, the trend that the planetary gear tends to stop rotating at the moment is high, the rotation locking effect is achieved, the first output shaft 6 and the second output shaft 9 are almost locked and rotate at the same rotating speed, the left wheel and the right wheel of the automobile approximately equally divide the rotating moment, and the passing performance of the automobile is improved.

What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept herein, and it is intended to cover all such modifications and variations as fall within the scope of the utility model.

Claims

1. Car limit for slip response differential lock locking means, its characterized in that: including permanent magnet subassembly (1), induction coil subassembly (2), sun gear (3) and planetary gear (4), sun gear (3) are two and are relative setting, planetary gear (4) are two and are relative setting, sun gear (3) and planetary gear (4) intermeshing cyclization, permanent magnet subassembly (1) sets up to two and is located the both sides of planetary gear (4) respectively, induction coil subassembly (2) suit and surround outside permanent magnet subassembly (1), induction coil subassembly (2) sets up to two and is located the both sides of planetary gear (4) respectively.

2. The limited slip induction differential lock locking apparatus of claim 1, wherein: the permanent magnet assembly (1) comprises a permanent magnet frame (11) and permanent magnets (12), wherein the permanent magnet frame (11) is disc-shaped, a plurality of grooves (111) are formed in the edge of the permanent magnet frame (11), the permanent magnets (12) are embedded in the grooves (111), the permanent magnets (12) and the grooves (111) are correspondingly arranged into a plurality of pieces, and the permanent magnets (12) N, S are arranged in a staggered mode.

3. The limited slip induction differential lock locking apparatus of claim 2, wherein: the number of the permanent magnets (12) is an even number of 4-20.

4. The limited slip induction differential lock locking apparatus for an automobile of claim 1, 2 or 3, wherein: induction coil subassembly (2) are including solid fixed ring (21), iron core (22) and winding coil (23), the one end and solid fixed ring (21) fixed connection of iron core (22), the other end of iron core (22) extends to the center of solid fixed ring (21), winding coil (23) encircle outside iron core (22), iron core (22) and winding coil (23) one-to-one set up to the multiunit and be the ring-type distribution in the inboard of solid fixed ring (21).

5. The limited slip induction differential lock locking apparatus of claim 4, wherein: the winding coils (23) are connected in series, and the winding directions of the adjacent winding coils (23) are opposite.

6. The limited slip induction differential lock locking apparatus of claim 5, wherein: the number of the winding coils (23) is even 4-20, each group of the winding coils (23) is set to be 10-40 turns, and the winding coils (23) are copper enameled wires with the diameter of 0.1-2 mm.

7. The limited slip induction differential lock locking apparatus of claim 4, wherein: the induction coil assembly (2) further comprises a variable resistor (24), a circuit switch (25) and a resistance control device (26), wherein the variable resistor (24) and the circuit switch (25) are connected with the winding coil (23) in series, and the resistance control device (26) is connected with the variable resistor (24) in parallel.

8. The limited slip induction differential lock locking apparatus of claim 7, wherein: the resistance value of the variable resistor (24) is 1-20 omega.

9. The limited slip induction differential lock locking apparatus of claim 1, wherein: the induction type planetary gear set comprises a planetary gear carrier (5), a first output shaft (6) and a driven bevel gear (7), wherein the first output shaft (6) penetrates through the driven bevel gear (7) and is rotatably connected with the driven bevel gear (7), one end of the first output shaft (6) is fixedly connected with one of the sun gears (3), one end of the planetary gear carrier (5) is fixedly connected with one side of the driven bevel gear (7), and the induction coil assembly (2) is fixed on one side of the planetary gear carrier (5).

10. The limited slip induction differential lock locking apparatus of claim 9, wherein: still include connecting axle (8), connecting axle (8) run through planet carrier (5) and with planet carrier (5) rotatable coupling, the center of planetary gear (4) and the one end fixed connection of connecting axle (8), the other end and the permanent magnet subassembly (1) fixed connection of connecting axle (8).