Automobile mechanical inhaul cable driving system and driving mechanism thereof

Abstract

The embodiment of the utility model provides an automobile mechanical inhaul cable driving system and a driving mechanism thereof, the driving mechanism comprises a gear reducer motor and a screw rod module, the screw rod module further comprises a shell used for covering a screw rod and a nut seat, the other end of the screw rod is pivoted on the shell, the nut seat and the shell are relatively fixed in the circumferential direction, and the gear reducer motor is connected with the screw rod module. A stop step is arranged on the inner wall of one end of the shell close to the gear reducer motor; the supporting module comprises a plane bearing installed on the outer side face of the connecting part in a sleeving mode, a first abutting ring arranged between the output shaft and the plane bearing, and a second abutting ring arranged between the lead screw and the plane bearing and blocked and limited by a blocking step. The side face of the first abutting ring abuts against the straining ring of the plane bearing, the side face of the second abutting ring abuts against the loose ring of the plane bearing, the first abutting ring and the output shaft are coaxially fixed, and the second abutting ring and the shell are relatively fixed in the circumferential direction. According to the embodiment, protection can be effectively achieved, and the structural stability is high.

Description

Technical Field

[0001] The embodiment of the utility model relates to the technical field of automobile mechanical cables, and in particular to an automobile mechanical cable driving system and a driving mechanism thereof. Background Art

[0002] At present, the gear shifter and handbrake on the car are connected to the car's power device by mechanical cables. The driver operates the lever (the gear shifter corresponds to the gear shift lever, and the handbrake corresponds to the brake lever) to drive the mechanical cable to move, thereby achieving gear shifting or handbrake braking; however, the manual operation of the lever is relatively inefficient. For this reason, existing cars usually upgrade the transmission mechanical shift system and handbrake system to an electronic automatic shift system. The electronic automatic shift system can control the drive mechanism to output power based on the driver's manual input or the body data transmitted in the car's CAN bus to drive the cable movement to automatically achieve gear switching.

[0003] An existing driving mechanism of an electronic automatic shifting system mainly includes: a gear reduction motor fixed relatively to the body of a car and a screw module respectively connected to the end of the output shaft of the gear reduction motor and the end of the cable body of a mechanical cable, wherein one end of the screw of the screw module is coaxially connected to the output shaft, and the nut of the screw module is fixedly connected to the end of the cable body of the mechanical cable.

[0004] However, the inventors found in the specific implementation that the screw module of the traditional drive mechanism is usually directly exposed and has relatively poor safety. In addition, since the nut of the screw module is fixedly connected to the end of the cable body of the mechanical cable, and the cable body usually needs to bear a large tensile force, the output shaft and the screw of the gear reduction motor will be subjected to a large axial tensile force. During long-term operation, the output shaft and the screw are also prone to radial flexural deformation, which will also aggravate the wear between the screw and the nut seat, and the structural stability is also poor. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a driving mechanism of an automobile mechanical cable driving system, which can effectively achieve protection and improve stability.

[0006] A further technical problem to be solved by the embodiments of the present utility model is to provide an automobile mechanical cable drive system that can effectively achieve protection and improve stability.

[0007] In order to solve the above technical problems, the embodiment of the utility model provides the following technical solutions: a driving mechanism of an automobile mechanical cable, comprising:

[0008] A gear reduction motor, wherein the gear reduction motor has a housing fixed relative to the body of the automobile and an output shaft with a terminal end extending to the outside of the housing;

[0009] A screw module, comprising a screw having one end coaxially connected to the output shaft, a nut seat screwed to the screw and fixedly connected to the end of the cable body of the mechanical cable, and a housing for covering the screw and the nut seat, the other end of the screw being pivotally connected to the housing, the nut seat being relatively fixed to the housing in the circumferential direction, and a stop step being provided on the inner wall of one end of the housing close to the gear reduction motor; and

[0010] A support module for supporting the connection between the output shaft and the screw rod, the support module includes a plane bearing sleeved and installed on the outside of the connection part, a first pressure ring coaxially fixed with the output shaft, and a second pressure ring sleeved on the screw rod and circumferentially fixed relative to the housing, the first pressure ring and the second pressure ring respectively abut against the tight ring and the loose ring of the plane bearing from opposite sides of the plane bearing, and the end of the second pressure ring away from the plane bearing abuts against the stop step.

[0011] Furthermore, the outer shell is assembled on the casing, and a receiving groove connected to the inner cavity of the casing is opened on the side of the casing of the gear reduction motor facing the outer shell, and the final reduction gear of the gear reduction motor is assembled in the receiving groove and the gear shaft of the final reduction gear extends into the casing as the output shaft and is connected to the screw rod. When the output shaft is subjected to axial force, the end face of the final reduction gear causes the side face of the first pressure ring to be tightly pressed against the tight ring of the plane bearing.

[0012] Furthermore, the gear shaft and the screw rod are formed in one piece, and the final reduction gear protrudes correspondingly from one end surface of the screw rod to form the first pressure ring.

[0013] Furthermore, the gear shaft and the screw rod are coaxially connected by means of a coupling sleeve, the middle section of the coupling sleeve radially protrudes outward to form the first pressure ring, the support module also includes a stop ring sleeved at the end of the output shaft and a first ball bearing sleeved at the end of the coupling sleeve and between the first pressure ring and the stop ring, the opposite side surfaces of the stop ring respectively abut the end face of the final reduction gear and the first ball bearing to stop the final reduction gear in the accommodating groove, the inner ring of the first ball bearing is relatively fixed to the coupling sleeve and the outer ring is relatively fixed to the housing.

[0014] Furthermore, the output shaft and the screw rod are respectively inserted into the inner hole of the coupling sleeve from opposite ends of the coupling sleeve and are relatively fixed to the coupling sleeve in the circumferential direction.

[0015] Furthermore, the housing includes a sleeve which is sleeved on the outside of the screw rod and fixed at one end relative to the housing of the gear reduction motor, and an end cover which is fixed to the end of the sleeve away from the gear reduction motor. The other end of the screw rod is pivotally connected to the end cover, the nut seat and the sleeve are relatively fixed in the circumferential direction, and the stop step is arranged on the inner wall of one end of the sleeve close to the gear reduction motor.

[0016] Furthermore, the inner wall of the sleeve is provided with a plurality of positioning slots which are arranged parallel to the screw rod and have an end opening on one end face of the sleeve and a slot facing the inner cavity of the sleeve. The outer side surface of the nut seat is provided with a guide groove corresponding to each of the positioning slots. A guide rod is inserted in each of the positioning slots. Each of the guide rods also protrudes from the slot of the positioning slot and is embedded in the guide groove to fix the nut seat in the circumferential direction and guide the nut seat to move axially along the screw rod.

[0017] Furthermore, the other end of the screw rod is pivotally connected to the end cover by means of a second ball bearing, and the end cover is also provided with a through hole for allowing the cable body end of the mechanical cable to extend into the outer shell, and the nut seat includes a nut threaded on the screw rod and a connecting sleeve that is sleeved and fixed on the outside of the nut and is used to be fixedly connected to the cable body end, and the guide groove is arranged on the connecting sleeve.

[0018] Furthermore, the nut seat includes a nut screwed on the screw rod and a connecting tube with one end screwed on the outside of the nut and the other end passing through the end cover and extending to the sleeve and fixedly connected to the cable body end of the mechanical cable. The guide groove is provided on the nut.

[0019] On the other hand, in order to solve the above-mentioned further technical problems, the embodiment of the utility model further provides the following technical solutions: an automobile mechanical cable drive system, comprising a driving mechanism connected to the mechanical cable and an electronic control device connected to the driving mechanism for controlling the working state of the driving mechanism, wherein the driving mechanism is the above-mentioned driving mechanism.

[0020] After adopting the above technical scheme, the embodiment of the utility model has at least the following beneficial effects: the embodiment of the utility model can effectively protect the screw rod and the nut seat by adding a shell cover on one side of the gear reduction motor to cover the screw rod and the nut seat, and the nut seat and the shell are relatively fixed in the circumferential direction to limit the movement of the nut seat; in addition, by adding a support module, a plane bearing, a first pressure ring and a second pressure ring are installed at the connection between the output shaft and the screw rod, so that the output shaft and the screw rod can be effectively supported to avoid improper bending of the output shaft and the screw rod. In addition, when the output shaft outputs rotational power to move the cable body end of the mechanical cable, a larger pulling force on the cable body acts on the first pressure ring and the second pressure ring. Since the second pressure ring is blocked and limited by the stop step, the first pressure ring and the second pressure ring respectively clamp the tight ring and the loose ring of the plane bearing with the side. At this time, the rolling parts inside the plane bearing can move by themselves to bear the axial load, reduce the wear of the screw rod and the nut seat, and have strong structural stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The present invention is a schematic diagram of the disassembled structure of an optional embodiment of the driving mechanism of the automobile mechanical cable of the present invention.

[0022] Figure 2 The figure is a schematic diagram of the assembly structure of an optional embodiment of the driving mechanism of the automobile mechanical cable of the utility model.

[0023] Figure 3 The utility model is a schematic cross-sectional structure diagram of an optional embodiment of the driving mechanism of the automobile mechanical cable.

[0024] Figure 4 The present invention is a partial cross-sectional structural schematic diagram of another angle of an optional embodiment of the driving mechanism of the automobile mechanical cable of the present invention.

[0025] Figure 5 The present invention is a schematic diagram of the disassembled structure of a sleeve and an end cover of an optional embodiment of the driving mechanism of the automobile mechanical cable of the present invention.

[0026] Figure 6 The cross-sectional diagram of the nut position of an optional embodiment of the driving mechanism of the automobile mechanical cable of the utility model.

[0027] Figure 7 This is a schematic diagram of the disassembled structure of another optional embodiment of the driving mechanism of the automobile mechanical cable of the utility model.

[0028] Figure 8 The figure is a cross-sectional structural diagram of another optional embodiment of the driving mechanism of the automobile mechanical cable of the utility model.

[0029] Fig. 9This is a schematic diagram of the split structure of the final reduction gear and the coupling sleeve of another optional embodiment of the driving mechanism of the automobile mechanical cable of the utility model.

[0030] Fig.10 This is a schematic diagram of the disassembled structure of a nut and a connecting pipe of another optional embodiment of the driving mechanism of the automobile mechanical cable of the utility model.

[0031] Fig.11 The schematic diagram is a schematic diagram of an optional embodiment of the automobile mechanical cable drive system of the utility model. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following illustrative embodiments and descriptions are only used to explain the present invention and are not intended to limit the present invention. In addition, the embodiments and features in the embodiments of the present application may be combined with each other without conflict.

[0033] like Figure 1-Figure 8 As shown, an optional embodiment of the utility model provides a driving mechanism 1 for an automobile mechanical cable, comprising:

[0034] The gear reduction motor 10 comprises a housing 101 fixed relative to the body of the automobile and an output shaft 103 whose end extends to the outside of the housing 101;

[0035] The screw module 12 comprises a screw 121 having one end coaxially connected to the output shaft 103, a nut seat 123 screwed to the screw 121 and fixedly connected to the end of the cable body 30 of the mechanical cable 3, and a housing 125 for covering the screw 121 and the nut seat 123, the other end of the screw 121 being pivotally connected to the housing 125, the nut seat 123 being relatively fixed to the housing 125 in the circumferential direction, and a stop step 125a being provided on the inner wall of one end of the housing 125 close to the gear reduction motor 10; and

[0036] A support module 16 is used to support the connection between the output shaft 103 and the screw rod 121, and the support module 16 includes a plane bearing 161 mounted on the outer side of the connection, a first pressing ring 163 coaxially fixed with the output shaft 103, and a second pressing ring 165 mounted on the screw rod 121 and relatively fixed to the housing 125 in the circumferential direction. The first pressing ring 163 and the second pressing ring 165 respectively abut against the tight ring 161a and the loose ring 161b of the plane bearing 161 from opposite sides of the plane bearing 161, and the end of the second pressing ring 165 away from the plane bearing 161 abuts against the stop step 125a.

[0037] The embodiment of the utility model can effectively protect the screw rod 121 and the nut seat 123 by adding a housing 125 on one side of the gear reduction motor 10 to cover the screw rod 121 and the nut seat 123, and the nut seat 123 and the housing 125 are relatively fixed in the circumferential direction to limit the movement of the nut seat 123; in addition, by adding a support module 16, a plane bearing 161, a first pressing ring 163 and a second pressing ring 165 are installed at the connection between the output shaft 103 and the screw rod 121, so as to effectively support the output shaft 103 and the screw rod 121, and avoid the output shaft 103 and the screw rod 121 from being damaged. In addition, when the output shaft 103 outputs a rotating power to move the end of the cable body 30 of the mechanical cable 3, a large pulling force on the cable body 30 acts on the first pressing ring 163 and the second pressing ring 165. Since the second pressing ring 165 is blocked and limited by the stop step 125a, the first pressing ring 163 and the second pressing ring 165 clamp the tight ring 161a and the loose ring 161b of the plane bearing 161 with the side surface, respectively. At this time, the rolling element inside the plane bearing 161 can move by itself to bear the axial load, thereby reducing the wear of the connection part between the output shaft 103 and the screw rod 123.

[0038] In the specific implementation, it can be understood that the tight ring 161a of the plane bearing 161 is tightly fixed with the connection part and rotates synchronously, while the loose ring 161b is only sleeved on the connection part and can move relatively.

[0039] In an optional embodiment of the present invention, Figure 1 , Figure 3-Figure 4 , Figure 7-Figure 8 As shown, the housing 125 is assembled on the shell 101, and a receiving groove 101a connected to the inner cavity of the housing 125 is opened on the side of the housing 101 of the gear reduction motor 10 facing the housing 125. The final reduction gear 105 of the gear reduction motor 10 is assembled in the receiving groove 101a, and the gear shaft of the final reduction gear 105 extends into the housing 125 as the output shaft 103 and is connected to the screw rod 121. When the output shaft 103 is subjected to axial force, the end face of the final reduction gear 105 causes the side surface of the first pressing ring 163 to be tightly pressed against the tight ring 161a of the plane bearing 161. In this embodiment, the final reduction gear 105 of the gear reduction motor 10 is assembled in the accommodating groove 101a, so that one end surface of the final reduction gear 105 is exposed and pressed against the side of the first pressing ring 163. The first pressing ring 163 can limit the final reduction gear 105, and the final reduction gear 105 can cause the side of the first pressing ring 163 to press tightly against the tight ring 161a of the plane bearing 161.

[0040] In an optional embodiment of the present invention, Figure 1 , Figure 3-Figure 4 As shown, the gear shaft and the screw rod 121 are integrally formed, and the end surface of the final reduction gear 105 facing the screw rod 121 correspondingly protrudes to form the first pressing ring 163. In this embodiment, the end surface of the final reduction gear 105 is directly protruded to form the first pressing ring 163, and the gear shaft 103 is integrally connected with the screw rod 121, the assembly structure is simpler, and the plane bearing 161 is directly used to stop and limit the final reduction gear 105, which is convenient for installation.

[0041] In an optional embodiment of the present invention, Figure 7-Figure 8 As shown, the gear shaft 103 and the screw rod 121 are coaxially connected by means of a coupling sleeve 167, and the middle section of the coupling sleeve 167 radially protrudes outward to form the first pressure ring 163. The support module 16 also includes a stop ring 168 sleeved at the end of the output shaft 103 and a first ball bearing 169 sleeved at the end of the coupling sleeve 167 and between the first pressure ring 163 and the stop ring 168. The opposite side surfaces of the stop ring 168 respectively abut against the end surface of the final reduction gear 105 and the first ball bearing 169 to stop the final reduction gear 105 in the accommodating groove 101a. The inner ring 169a of the first ball bearing 169 is relatively fixed to the coupling sleeve 167, and the outer ring 169b is relatively fixed to the housing 101. In this embodiment, the first pressure ring 163 and the middle section of the coupling sleeve 167 are integrally formed, and a first ball bearing 169 is added to ensure smooth rotation and installation of the coupling sleeve 167 and the housing 125; and the stop ring 168 is used to stop and limit the final reduction gear 105 to achieve installation of the overall structure.

[0042] In an optional embodiment of the present invention, Figure 7-Figure 9 As shown, the output shaft 103 and the screw rod 121 are respectively inserted into the inner hole 167a of the coupling sleeve 167 from opposite ends of the coupling sleeve 167 and are respectively fixed relative to the coupling sleeve 267 in the circumferential direction. In a specific implementation, a first plug-in column 103a is provided at the end of the gear shaft 103, and a second plug-in column 121a is provided at the end of the screw rod 121. The first plug-in column 103a and an inner hole 167a of the coupling sleeve 167 are plugged and matched with each other, and the cross-sections of the two are mutually adapted non-circular; the second plug-in column 121a is screwed into the other inner hole 167a of the coupling sleeve 167, and a pin 167c is radially passed through the second plug-in column 121a and the shaft hole 167d preset in the second plug-in hole 167b in sequence to coaxially connect the gear shaft 103 and the screw rod 121. In this embodiment, the coaxial connection of the plug-in hole and the plug-in column can be used to quickly realize the coaxial connection of the two shafts, which is convenient to assemble and has a simple structure.

[0043] In an optional embodiment of the present invention, Figure 1 , Figure 3 and Figure 5 As shown, the housing 125 includes a sleeve 1250 which is sleeved on the outside of the screw rod 121 and fixed with one end relative to the housing 101 of the gear reduction motor 10, and an end cover 1252 which is fixed to the end of the sleeve 1250 away from the gear reduction motor 10. The other end of the screw rod 121 is pivotally connected to the end cover 1252, the nut seat 123 is relatively fixed to the sleeve 1250 in the circumferential direction, and the stop step 125a is provided on the inner wall of one end of the sleeve 1250 close to the gear reduction motor 10. In this embodiment, the housing 125 is composed of the sleeve 1250 and the end cover 1252, which are assembled into the housing 125 separately to facilitate the assembly and setting of the structure. In a specific implementation, the end cover 1252 and the sleeve 1250 are locked on the housing 101 of the gear reduction motor 10 by a long screw.

[0044] In an optional embodiment of the present invention, Figure 3 , Figure 5 and Figure 6 As shown, the inner wall of the sleeve 1250 is provided with a plurality of positioning slots 1250a which are arranged parallel to the screw rod 121 and have an end opening on one end face of the sleeve 1250 and a slot in the direction toward the inner cavity of the sleeve 1250. The outer side surface of the nut seat 123 is provided with a guide groove 123a corresponding to each of the positioning slots 1250a. A guide rod 1250b is correspondingly inserted in each of the positioning slots 1250a. Each of the guide rods 1250b also protrudes from the slot of the positioning slot 1250a and is embedded in the guide groove 123a to fix the nut seat 123 in the circumferential direction and guide the nut seat 123 to move axially along the screw rod 121. In this embodiment, the guide rod 1250b inserted in the positioning slot 1250a on the inner wall of the sleeve 1250 cooperates with the guide groove 123a on the side of the nut seat 123, so that the circumferential fixation of the nut seat 123 and the sleeve 1250 can be effectively achieved, and the guide rod 1250b can be used to guide the nut seat 123 to move axially along the screw rod 121, and the structure is very simple.

[0045] In an optional embodiment of the present invention, Figure 3 and Figure 5As shown, the other end of the screw rod 121 is pivotally connected to the end cover 1252 by means of a second ball bearing 121b, and the end cover 1252 is also provided with a through hole 1252a for allowing the end of the cable body 30 of the mechanical cable 3 to extend into the housing 125, and the nut seat 123 includes a nut 1230 threadedly connected to the screw rod 121 and a connecting sleeve 1232 sleeved and fixed to the outside of the nut 1230 and used for fixed connection with the end of the cable body 30, and the guide groove 123a is provided on the connecting sleeve 1232. In this embodiment, the second ball bearing 121b is used to realize the installation of the screw rod 121 to ensure the smooth rotation of the screw rod 121; and by providing a through hole 1252a in the end cover 1252, the end of the cable body 30 of the mechanical cable 3 can extend into the housing 125 through the through hole 1252a and then be connected and fixed with the fixing sleeve 1232 on the outside of the nut 1230.

[0046] In an optional embodiment of the present invention, Figure 7 , Figure 8 and Fig.10 As shown, the nut seat 123 includes a nut 1230 screwed on the screw rod 121 and a connecting tube 1234 with one end screwed on the outside of the nut 1230 and the other end passing through the end cover 1252 to extend to the sleeve 1250 and then fixedly connected to the end of the cable body 30 of the mechanical cable 3. The guide groove 123a is provided on the nut 1230. In this embodiment, the connection nut 1230 is connected by the connecting tube 1234, and the end of the screw rod 121 described in the connecting tube 1234 can be used to support the screw rod 121, thereby ensuring smooth rotation of the screw rod 121; at the same time, after the connecting tube 1234 is connected to the nut 1230, it extends to the outside of the outer shell 125 and is fixedly connected to the end of the cable body 30 of the mechanical cable 3, thereby connecting and fixing the nut 1230 and the cable body 30 by using the connecting tube 1234; moreover, when the gear reduction motor 10 fails and emergency operation is required, the user can rotate the connecting tube 1234 through the exposed end of the connecting tube 1234 to separate the connecting tube 1234 from the nut 1230, and then manually pull the connecting tube 1234 to drive the cable body 30 of the mechanical cable 3 to move.

[0047] On the other hand, Fig.11 As shown, the embodiment of the utility model further provides an automobile mechanical cable drive system, including a drive mechanism 1 connected to a mechanical cable 3 and an electronic control device 5 connected to the drive mechanism 1 for controlling the working state of the drive mechanism 1, wherein the drive mechanism is the drive mechanism of the above embodiment. In this embodiment, the automobile mechanical cable drive system using the above drive mechanism 1 can upgrade and transform the shifter or mechanical handbrake of the mechanical cable of the existing stock automobile, and can effectively protect the internal structure, avoid wear, and improve the stability of the structure.

[0048] In an optional embodiment of the utility model, the automobile mechanical cable drive system is used for a mechanical cable of a shifter or a handbrake of an automobile. In this embodiment, the shifter or the handbrake of an automobile is usually connected to a power device of the automobile by a mechanical cable, so the automobile mechanical cable drive system of this embodiment can be applied to the shifter or the handbrake.

[0049] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, which all belong to the protection scope of the utility model.

Claims

1. A driving mechanism for an automobile mechanical cable, comprising: A gear reduction motor, wherein the gear reduction motor has a housing fixed relative to the body of the automobile and an output shaft with a terminal end extending to the outside of the housing; as well as A screw rod module, comprising a screw rod having one end coaxially connected to the output shaft and a nut seat screwed on the screw rod and fixedly connected to the end of the cable body of the mechanical cable; Characterized in that the screw module further comprises: a housing for covering the screw and the nut seat, the other end of the screw is pivotally connected to the housing, the nut seat and the housing are relatively fixed in the circumferential direction, and a stop step is provided on the inner wall of one end of the housing close to the gear reduction motor; and A support module for supporting the connection between the output shaft and the screw rod, the support module includes a plane bearing sleeved and installed on the outside of the connection part, a first pressure ring coaxially fixed with the output shaft, and a second pressure ring sleeved on the screw rod and circumferentially fixed relative to the housing, the first pressure ring and the second pressure ring respectively abut against the tight ring and the loose ring of the plane bearing from opposite sides of the plane bearing, and the end of the second pressure ring away from the plane bearing abuts against the stop step.

2. The driving mechanism of the automobile mechanical cable according to claim 1, characterized in that: The outer shell is assembled on the casing, and a receiving groove connected to the inner cavity of the outer shell is opened on the side of the casing facing the outer shell. The final reduction gear of the gear reduction motor is assembled in the receiving groove, and the gear shaft of the final reduction gear extends into the outer shell as the output shaft and is connected to the screw rod. When the output shaft is subjected to axial force, the end face of the final reduction gear causes the side face of the first pressure ring to be tightly pressed against the tight ring of the plane bearing.

3. The driving mechanism of the automobile mechanical cable as claimed in claim 2, characterized in that: The gear shaft and the screw rod are formed in one piece, and the final reduction gear protrudes correspondingly toward an end surface of the screw rod to form the first pressure ring.

4. The driving mechanism of the automobile mechanical cable as claimed in claim 2, characterized in that: The gear shaft and the screw rod are coaxially connected by means of a coupling sleeve, and the middle section of the coupling sleeve radially protrudes outward to form the first pressure ring. The support module also includes a stop ring sleeved at the end of the output shaft and a first ball bearing sleeved at the end of the coupling sleeve and between the first pressure ring and the stop ring. The opposite side surfaces of the stop ring respectively abut the end surface of the final reduction gear and the first ball bearing to stop the final reduction gear in the accommodating groove. The inner ring of the first ball bearing is relatively fixed to the coupling sleeve, and the outer ring is relatively fixed to the housing.

5. The driving mechanism of the automobile mechanical cable as claimed in claim 4, characterized in that: The output shaft and the screw rod are respectively inserted into the inner hole of the coupling sleeve from opposite ends of the coupling sleeve and are relatively fixed to the coupling sleeve in the circumferential direction.

6. The driving mechanism of the automobile mechanical cable according to any one of claims 1 to 4, characterized in that: The housing includes a sleeve which is sleeved on the outside of the screw rod and fixed at one end relative to the housing of the gear reduction motor, and an end cover which is fixed to the end of the sleeve away from the gear reduction motor. The other end of the screw rod is pivotally connected to the end cover, the nut seat and the sleeve are relatively fixed in the circumferential direction, and the stop step is arranged on the inner wall of one end of the sleeve close to the gear reduction motor.

7. The driving mechanism of the automobile mechanical cable as claimed in claim 6, characterized in that: The inner wall of the sleeve is provided with a plurality of positioning slots which are arranged parallel to the screw rod and have an end opening on one end face of the sleeve and a notch in the direction toward the inner cavity of the sleeve. The outer side surface of the nut seat is provided with a guide groove corresponding to each of the positioning slots. A guide rod is inserted in each of the positioning slots. Each of the guide rods also protrudes from the notch of the positioning slot and is embedded in the guide groove to fix the nut seat in the circumferential direction and guide the nut seat to move axially along the screw rod.

8. The driving mechanism of the automobile mechanical cable as claimed in claim 7, characterized in that: The other end of the screw rod is pivotally connected to the end cover by means of a second ball bearing. The end cover is also provided with a through hole for the cable body end of the mechanical cable to extend into the outer shell. The nut seat includes a nut threaded on the screw rod and a connecting sleeve that is sleeved and fixed on the outside of the nut and is used to be fixedly connected to the cable body end. The guide groove is arranged on the connecting sleeve.

9. The driving mechanism of the automobile mechanical cable according to claim 7, characterized in that: The nut seat includes a nut screwed on the screw rod and a connecting tube with one end screwed on the outside of the nut and the other end passing through the end cover and extending to the sleeve and fixedly connected to the cable body end of the mechanical cable. The guide groove is arranged on the nut.

10. An automobile mechanical cable drive system, comprising a drive mechanism connected to the mechanical cable and an electronic control device connected to the drive mechanism for controlling the working state of the drive mechanism, characterized in that: The driving mechanism is the driving mechanism according to any one of claims 1 to 9.

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