Automobile seat slide rail

Abstract

The application relates to the technical field of automobile slide rail, in particular to an automobile seat slide rail which comprises two rails, a lead screw rotationally connected in the rails, a sliding block arranged on the lead screw, a first transmission wheel coaxially arranged at the end of the lead screw, a connecting seat arranged between the two rails, a motor mounted on the connecting seat, the number of the motors being one, a driving assembly arranged on the connecting seat and used for synchronously driving the two first transmission wheels to synchronously rotate through the motor, and a mounting seat of the automobile seat fixedly connected with the sliding block. The two sliding blocks are synchronously moved along the length direction of the rails through the driving assembly, the mounting seat is slid, and the transmission stability of the two lead screws is guaranteed through the above scheme, so that the noise in the seat adjusting process is small.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of automobile slide rails, in particular to an automobile seat slide rail. BACKGROUND

[0002] As a mainstream means of transportation, automobiles, especially MPV models suitable for home use and business, are becoming more and more popular, and the functional requirements of seats, especially electric seats, are also increasing. The existing electric seats usually have a slide rail installed in the vehicle cabin, and a mounting seat is slid on the slide rail. A lead screw is installed in the slide rail, and the lead screw is driven to rotate by a motor, so as to move the mounting seat connected to the lead screw by a thread.

[0003] In order to ensure the stability of the entire mounting seat sliding, the existing slide rail has a lead screw installed on each of the two slide rails, and a single motor is arranged on each slide rail to drive. The inventor believes that the above-mentioned slide rail uses two lead screws for driving, and the motor is also provided with two, and the synchronism of the two lead screws is difficult to guarantee in the transmission process, and the noise emitted by the double motors at the same time is larger. SUMMARY

[0004] In order to improve the synchronism of the operation of the two lead screws and reduce the noise of the double motors, the application provides an automobile seat slide rail.

[0005] The application provides an automobile seat slide rail, which adopts the following technical scheme:

[0006] The automobile seat slide rail comprises two rails, a lead screw rotatably connected in the rail, and a sliding block arranged on the lead screw. The end of the lead screw is coaxially provided with a first transmission wheel. A connecting seat is arranged between the two rails. A motor is installed on the connecting seat. The number of the motors is one. A driving assembly for synchronously driving the two first transmission wheels to synchronously rotate by the motor is further arranged on the connecting seat. The mounting seat of the automobile seat is fixedly connected with the sliding block. The two sliding blocks are synchronously moved along the length direction of the rail by the driving assembly, so as to realize the sliding of the mounting seat.

[0007] By adopting the above technical scheme, the automobile seat is installed on the connecting seat. The rotation shaft of the motor is driven to rotate by the vehicle-mounted circuit, so that the two first transmission wheels synchronously rotate. Under the action of the first transmission wheel, the entire automobile seat is adjusted along the length direction of the rail. In the above scheme, one motor is used to drive the corresponding lead screws on the two rails to rotate, so as to realize the adjustment of the seat. On the one hand, the synchronization problem of the two lead screws is solved, and on the other hand, the number of motors is reduced, and the overall noise is reduced.

[0008] Optionally, the connecting base is fixedly installed between the two rails, the first transmission wheel is coaxially and fixedly connected with the lead screw, the sliding block is threadedly connected with the lead screw, the driving assembly comprises a transmission shaft rotatably connected to the mounting base, two second transmission wheels coaxially and fixedly connected to the transmission shaft, and a transmission belt wound between the first transmission wheel and the second transmission wheel, the two second transmission wheels are arranged in one-to-one correspondence with the two first transmission wheels, and the transmission shaft is coaxially and fixedly connected with the rotating shaft of the motor.

[0009] By adopting the technical scheme, the slide rail is a front-mounted slide rail, in actual operation, the motor drives the transmission shaft to rotate, so that the first transmission wheel and the second transmission wheel synchronously rotate under the action of the transmission belt, the second transmission wheel synchronously rotates with the lead screw, the sliding block slides along the length direction of the rail, and the movement of the entire seat is realized.

[0010] Optionally, the connecting base slides between the two rails, the sliding block is fixedly connected with the connecting base, the first transmission wheel is rotatably connected to the sliding block, and the first transmission wheel is threadedly connected with the lead screw. The driving assembly comprises a transmission shaft rotatably connected to the mounting base, two second transmission wheels coaxially and fixedly connected to the transmission shaft, and a transmission belt wound between the first transmission wheel and the second transmission wheel, the two second transmission wheels are arranged in one-to-one correspondence with the two first transmission wheels, and the transmission shaft is coaxially and fixedly connected with the rotating shaft of the motor.

[0011] By adopting the technical scheme, the slide rail is a front-mounted slide rail, in actual operation, the motor drives the transmission shaft to rotate, so that the first transmission wheel and the second transmission wheel synchronously rotate under the action of the transmission belt, the second transmission wheel synchronously rotates with the lead screw, the sliding block slides along the length direction of the rail, and the movement of the entire seat is realized.

[0012] Optionally, the first transmission wheel and the second transmission wheel are sprockets, and the transmission belt is a chain.

[0013] By adopting the technical scheme, compared with a synchronous belt transmission, the service life of the sprocket is longer.

[0014] Optionally, the connecting base is further provided with a tensioning structure, the tensioning structure comprises a containing cavity formed in the end of the transmission shaft away from the motor, a cooling liquid filled in the containing cavity, and a liquid supply assembly arranged at the end of the transmission shaft and used for supplementing the cooling liquid into the containing cavity, the teeth of the second transmission wheel are hollow flexible protrusions, and the containing cavity is in communication with the inner cavities of the flexible protrusions.

[0015] By adopting the technical scheme, the liquid supply assembly fills the cooling liquid into the containing cavity, the cooling liquid further cools the motor through the transmission shaft, and the gear teeth of the second transmission wheel are expanded and changed in length, so that the second transmission wheel is tensioned.

[0016] Optionally, the liquid supply assembly comprises a baffle arranged at the opening of the containing cavity, a liquid inlet pipe fixed on the baffle, a one-way valve arranged at the liquid inlet pipe, a liquid guide pipe rotatably connected to the liquid inlet pipe away from the baffle, and a liquid delivery structure arranged on the connecting seat and used for supplying liquid into the inner cavity of the liquid guide pipe.

[0017] By adopting the technical scheme, the liquid supply assembly fills the cooling liquid into the containing cavity, the cooling liquid further cools the motor through the transmission shaft, and the gear teeth of the second transmission wheel are expanded and changed in length, so that the second transmission wheel is tensioned.

[0018] Optionally, the liquid supply assembly comprises a baffle arranged at the opening of the containing cavity, a liquid inlet pipe fixed on the baffle, a one-way valve arranged at the liquid inlet pipe, a liquid guide pipe rotatably connected to the liquid inlet pipe away from the baffle, and a liquid delivery structure arranged on the connecting seat and used for supplying liquid into the inner cavity of the liquid guide pipe.

[0019] By adopting the technical scheme, the liquid supply assembly fills the cooling liquid into the containing cavity, the cooling liquid further cools the motor through the transmission shaft, and the gear teeth of the second transmission wheel are expanded and changed in length, so that the second transmission wheel is tensioned.

[0020] Optionally, the motor is a right-angle speed reducer.

[0021] By adopting the technical scheme, the overall length of the motor is along the length direction of the connecting seat, so that the space occupied by the motor in the length direction of the track is reduced.

[0022] In summary, the present application has at least one of the following beneficial technical effects:

[0023] 1. One motor is used to rotate the corresponding lead screws on two tracks, so as to adjust the seat. On the one hand, the synchronization of the two lead screws is solved, and on the other hand, the number of motors is reduced, and the overall noise is reduced.

[0024] 2. By arranging the cooling liquid, the inner cavity of the flexible protrusion is pressurized to realize the effect of tensioning the transmission belt, and the transmission shaft is cooled by the cooling liquid, so that the heat dissipation of the motor is also accelerated. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a partial structure schematic diagram of example one, mainly used to show the position of the motor.

[0026] Figure 2 is the schematic diagram of the inner cavity structure of the connecting seat in embodiment one, mainly used for showing the driving assembly.

[0027] Figure 3 is the schematic diagram of part of the structure in embodiment one, mainly used for showing that the transmission belt is a chain.

[0028] Figure 4 is the schematic diagram of part of the structure in embodiment two, mainly used for showing the part of the motor and the driving assembly.

[0029] Figure 5 is the schematic diagram of the overall structure of the connecting seat part in embodiment three.

[0030] Figure 6 is the schematic diagram of the overall structure of the transmission shaft in embodiment three.

[0031] Figure 7 is the schematic diagram of the transmission shaft in embodiment three, mainly used for showing the filled cooling liquid.

[0032] Reference signs: 1, rail; 2, lead screw; 3, sliding block; 4, first transmission wheel; 5, connecting seat; 6, motor; 7, driving assembly; 8, transmission shaft; 9, second transmission wheel; 10, transmission belt; 11, containing cavity; 12, cooling liquid; 13, liquid supply assembly; 14, flexible protrusion; 15, baffle; 16, liquid inlet pipe; 17, one-way valve; 18, liquid guide pipe; 19, cooling liquid tank; 20, liquid delivery pump. DETAILED DESCRIPTION

[0033] The present application will be further described in detail below in combination with the drawings, 1-7.

[0034] Embodiment one:

[0035] Referring to Figure 1 , an automobile seat slide rail comprises rails 1 and lead screws 2 and sliding blocks 3, the rails 1 are provided in two numbers and the two rails 1 are symmetrically arranged, the lead screws 2 are also provided in two groups, the two groups of lead screws 2 are arranged in the rails 1 respectively, the number of the sliding blocks 3 is equal to the number of the rails 1, and the sliding blocks 3 slide in the inner cavities of the rails 1.

[0036] Referring to Figure 1 , a connecting seat 5 is fixedly installed between the two rails 1, the connecting seat 5 is provided in a hollow manner, and a motor 6 is fixedly installed on the side wall of the connecting seat 5, the motor 6 in the embodiment is preferably provided as a right-angle speed reducer motor 6, and the number of the motor 6 is provided as one.

[0037] Referring to Figure 2At the end of the screw rod 2, a first transmission wheel 4 is coaxially fixed, and a motor 6 is arranged between the two first transmission wheels 4. In order to ensure the synchronous rotation of the screw rods 2 on both sides of the motor 6, a driving assembly 7 is further arranged on the connecting seat 5 to synchronously drive the synchronous rotation of the two first transmission wheels 4 through the motor 6.

[0038] With reference to Figure 2 And Figure 3 , the driving assembly 7 includes a transmission shaft 8, a second transmission wheel 9, and a transmission belt 10. The transmission shaft 8 is rotatably connected in the inner cavity of the connecting seat 5, and the transmission shaft 8 is fixedly connected with the rotating shaft of the motor 6. The second transmission wheel 9 is provided in two, and is coaxially fixed on the transmission shaft 8. The first transmission wheel 4 and the second transmission wheel 9 can be provided as gears or sprockets. In this embodiment, the first transmission wheel 4 and the second transmission wheel 9 are optimally provided as sprockets, and the transmission belt 10 is correspondingly provided as a chain. The transmission belt 10 is wound on the first transmission wheel 4 and the second transmission wheel 9. The transmission belt 10 is provided in two, one of which is wound on the first transmission wheel 4 on one side of the motor 6, and the other is wound on the first transmission wheel 4 on the other side of the motor 6.

[0039] With reference to Figure 1 And Figure 2 , the rotating shaft of the motor 6 is driven to rotate through the vehicle-mounted circuit. The automobile seat is mounted on the two sliding blocks 3. Under the action of the transmission belt 10, the second transmission wheel 9 and the first transmission wheel 4 are synchronously rotated, so that the screw rod 2 is rotated in the track 1. In this embodiment, the sliding block 3 is threadedly connected to the screw rod 2. During the rotation of the screw rod 2, the seat mounted on the sliding block 3 slides along the length direction of the track 1, thereby realizing the adjustment of the seat.

[0040] Embodiment two:

[0041] With reference to Figure 4 , based on the basis of embodiment one, the difference between embodiment two and embodiment one is that the connecting seat 5 is slidably arranged between the two tracks 1. In actual use, the two tracks 1 are arranged in parallel and are fixedly installed in the automobile cabin. The connecting seat 5 slides along the length direction of the track 1. The first transmission wheel 4 is rotatably connected to the side wall of the corresponding sliding block 3. The rotating shaft of the first transmission wheel 4 is hollow. The inner cavity of the rotating shaft of the first transmission wheel 4 is in communication with the outside, and the inner wall of the rotating shaft of the first transmission wheel 4 is threadedly connected with the screw rod 2.

[0042] With reference to Figure 4 , the driving assembly 7 includes a transmission shaft 8, a second transmission wheel 9, and a transmission belt 10. The transmission shaft 8 is rotatably connected to the mounting seat. In this embodiment, the second transmission wheel 9 is also provided in two, and the two second transmission wheels 9 are coaxially fixed on the transmission shaft 8.

[0043] With reference to Figure 4The transmission belt 10 in the second embodiment can be a synchronous belt or a chain, and is preferably a chain, and the corresponding second transmission wheel 9 and the first transmission wheel 4 are also chain wheels, so that the single chain is wound on the corresponding first transmission wheel 4 and the second transmission wheel 9.

[0044] Referring to Figure 4 and Figure 5 , the transmission shaft 8 is coaxially fixedly connected with the rotating shaft of the motor 6. In actual use, the rotating shaft of the motor 6 is driven to rotate by the vehicle-mounted power supply, so that the transmission shaft 8 rotates synchronously with the second transmission wheel 9. Under the action of the transmission belt 10, the first transmission wheels 4 on both sides of the connecting seat 5 also rotate synchronously. Since the lead screw 2 is fixedly connected in the inner cavity of the track 1 in the embodiment, the first transmission wheel 4 moves along the axial direction of the lead screw 2, and finally the two first transmission wheels 4 rotate, and the connecting seat 5 slides horizontally between the two tracks 1.

[0045] Embodiment three:

[0046] Referring to Figures 5-7 , the third embodiment is different from the first or second embodiment in that the connecting seat 5 is provided with a tensioning structure on the basis of the first or second embodiment. The tensioning structure includes a containing cavity 11 and a cooling liquid 12. The transmission shaft 8 is preferably hollow, and the cooling liquid 12 is filled in the inner cavity of the transmission shaft 8.

[0047] Referring to Figure 5 , Figure 6 and Figure 7 , it can be seen that the tensioning structure further includes a liquid supply assembly 13. The liquid supply assembly 13 includes a baffle 15, and the end of the transmission shaft 8 away from the motor 6 is provided with an opening. After the cooling liquid 12 is filled in the inner cavity of the transmission shaft 8, a cover plate is used to block the opening of the transmission shaft 8. The liquid supply assembly 13 further includes a liquid inlet pipe 16, a one-way valve 17, a liquid guide pipe 18 and a liquid delivery structure. The inner cavity of the transmission shaft 8 is in communication with the liquid inlet pipe 16. One end of the liquid guide pipe 18 is rotatably connected to the end of the liquid inlet pipe 16 away from the baffle 15, and the other end of the liquid guide pipe 18 is connected to the liquid delivery structure. The one-way valve 17 is arranged in the inner cavity of the liquid inlet pipe 16, so that the cooling liquid 12 flowing through the liquid guide pipe 18 to the inner cavity of the transmission shaft 8 through the liquid delivery structure is difficult to flow back in the liquid inlet pipe 16, thereby ensuring the stability of the hydraulic pressure in the inner cavity of the transmission shaft 8.

[0048] Referring to Figure 5 , the liquid delivery structure includes a cooling liquid tank 19 and a liquid delivery pump 20. One end of the liquid guide pipe 18 away from the liquid inlet pipe 16 is in communication with the liquid outlet of the liquid delivery pump 20. The liquid delivery pump 20 is fixedly installed on the side wall of the connecting seat 5. The liquid inlet of the liquid delivery pump 20 is in communication with the inner cavity of the cooling liquid tank 19. The cooling liquid tank 19 is also fixedly installed on the side wall of the connecting seat 5.

[0049] Referring to Figure 5 and Figure 6 In order to achieve the effect of tension, the teeth of the second transmission wheel 9 are provided as flexible protrusions 14 in a hollow shape, and the material of the second transmission wheel 9 is provided as an elastic rubber material, wherein the hydraulic pressure required for deformation of the tooth part of the second transmission wheel 9 is less than that of the remaining part, and the inner cavity of the flexible protrusion 14 is in communication with the inner cavity of the accommodating cavity 11. During the tensioning process, directly controlling the opening and closing of the infusion pump 20 can achieve the adjustment of the diameter of the entire second transmission wheel 9, thereby achieving the effect of tensioning the chain.

[0050] In the third embodiment of the present application, the implementation principle of the automobile seat slide rail is: during adjustment, the rotating shaft of the motor 6 is driven to rotate synchronously with the transmission shaft 8, thereby realizing the sliding of the entire seat along the length direction of the slide rail, and finally realizing the adjustment of the seat. During the adjustment process, since the number of motors 6 used is one, and two sliders 3 are controlled by one motor 6 to act together on the slide rail, the stability of the entire seat movement is ensured.

[0051] On the basis of the above, since the transmission belt 10 used in the embodiment is a synchronous belt or a chain, considering that loosening may occur during subsequent use, the cooling liquid 12 is drawn into the transmission shaft 8, thereby changing the overall diameter of the second transmission wheel 9 and the length of the teeth, and the entire chain is lifted to achieve tensioning.

[0052] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A car seat slide rail, comprising two rails (1), a screw rod (2) rotatably connected in the rails (1), and a slider (3) arranged on the screw rod (2), characterized in that: The end of the screw rod (2) is coaxially provided with a first transmission wheel (4), a connecting seat (5) is arranged between the two rails (1), a motor (6) is mounted on the connecting seat (5), the number of the motor (6) is one, a driving assembly (7) for synchronously driving the two first transmission wheels (4) to rotate synchronously is further arranged on the connecting seat (5), the mounting seat of the automobile seat is fixedly connected with the sliding block (3), the two sliding blocks (3) are synchronously moved along the length direction of the rail (1) through the driving assembly (7), and then the mounting seat is slid. The connecting seat (5) is fixedly installed between the two rails (1), the first transmission wheel (4) is coaxially and fixedly connected with the screw rod (2), the sliding block (3) is threadedly connected with the screw rod (2), the driving assembly (7) comprises a transmission shaft (8) rotatably connected to the mounting seat, two second transmission wheels (9) coaxially and fixedly connected to the transmission shaft (8), and a transmission belt (10) wound between the first transmission wheel (4) and the second transmission wheel (9), the two second transmission wheels (9) are correspondingly arranged with the two first transmission wheels (4), and the transmission shaft (8) is coaxially and fixedly connected with the rotating shaft of the motor (6). The connecting seat (5) slides between the two rails (1), the sliding block (3) is fixedly connected with the connecting seat (5), the first transmission wheel (4) is rotatably connected to the sliding block (3), the first transmission wheel (4) is threadedly connected with the screw rod (2), and the driving assembly (7) comprises a transmission shaft (8) rotatably connected to the mounting seat, two second transmission wheels (9) coaxially and fixedly connected to the transmission shaft (8), and a transmission belt (10) wound between the first transmission wheel (4) and the second transmission wheel (9), the two second transmission wheels (9) are correspondingly arranged with the two first transmission wheels (4), and the transmission shaft (8) is coaxially and fixedly connected with the rotating shaft of the motor (6). The connecting seat (5) is further provided with a tensioning structure, the tensioning structure comprises a containing cavity (11) formed in the end of the transmission shaft (8) away from the motor (6), a cooling liquid (12) filled in the containing cavity (11), a liquid supply assembly (13) arranged at the end of the transmission shaft (8) and used for supplementing the cooling liquid (12) into the containing cavity (11), the teeth of the second transmission wheel (9) are flexible protrusions (14) which are hollowly arranged, and the containing cavity (11) is in communication with the inner cavity of the flexible protrusion (14).

2. The automobile seat slide rail according to claim 1, characterized by: The first transmission wheel (4) and the second transmission wheel (9) are both chain wheels, and the transmission belt (10) is a chain.

3. The slide rail of claim 1, wherein: The liquid supply assembly (13) comprises a baffle (15) covering the opening of the containing cavity (11), a liquid inlet pipe (16) fixed on the baffle (15), a one-way valve (17) arranged at the liquid inlet pipe (16), a liquid guide pipe (18) rotatably connected to the end of the liquid inlet pipe (16) away from the baffle (15), and a liquid delivery structure arranged on the connecting seat (5) and used for supplying liquid into the inner cavity of the liquid guide pipe (18).

4. The slide rail of claim 3, wherein: The infusion structure comprises a cooling liquid tank (19) fixed on the connecting seat (5) and an infusion pump (20) fixed on the connecting seat (5), the water inlet of the infusion pump (20) is communicated with the inner cavity of the cooling liquid tank (19), and the liquid outlet of the infusion pump (20) is connected with the liquid guide pipe (18) through a conduit.

5. The slide rail of claim 1, wherein: The motor (6) is a right-angle speed reduction motor (6).

Images