Electric long sliding rail horizontal driver for automobile seat

Abstract

The utility model relates to an electric long slide rail horizontal driver of an automobile seat, which comprises a long lead screw and a plurality of reduction gearboxes slidably mounted on the long lead screw, each reduction gearbox comprises a left box body and a right box body, and a worm, a first worm gear, a transmission worm gear and a second worm gear are sequentially mounted in the buckled left box body and right box body from top to bottom. The worm is used for being connected with the output end of the motor, the first worm gear is in meshing transmission with the worm, the transmission worm gear is in meshing transmission with the first worm gear and the second worm gear, and a threaded hole which allows the long screw rod to penetrate through and is in threaded connection with the long screw rod is formed in the second worm gear. Lead screw holes coaxial with the threaded holes are formed in the two sides of the reduction gearbox. The technical scheme provided by the utility model has the technical effects of simple and reasonable structure and convenience in installation.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile seat drivers, in particular to an electric long slide rail horizontal driver for automobile seats. Background Art

[0002] A common mechanism used to adjust the seat position in a car, a seat actuator is located between the seat and the vehicle floor, establishing a transmission connection between the seat and the floor rails. A motor drives the seat along the rails during operation, adjusting the seat position. Currently, conventional seat actuators typically require one seat, resulting in numerous components and a complex structure, making assembly inconvenient. Utility Model Content

[0003] In view of the above problems, the utility model provides an electric long slide rail horizontal driver for a car seat which has a simple and reasonable structure and is easy to install.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an electric long slide rail horizontal driver for a car seat, comprising a long lead screw and a plurality of reduction gear boxes slidably mounted on the long lead screw, the reduction gear box comprising a left box body and a right box body, the left box body and the right box body being interlocked with each other, and a worm, a first worm gear, a transmission worm gear and a second worm gear being installed inside the left box body and the right box body from top to bottom in sequence, the worm being used to connect to the output end of the motor, the first worm gear being meshed with the worm for transmission, the transmission worm gear being meshed with the first worm gear and the second worm gear for transmission respectively, a threaded hole being provided in the second worm gear for the long lead screw to pass through and being threadedly connected to the long lead screw, and lead screw holes being arranged on the same axis as the threaded holes are provided on both sides of the reduction gear box.

[0005] By adopting the above technical solution, the worm is connected to the motor for transmission, and the first worm gear, the transfer worm gear and the second worm gear are meshed and transmitted in sequence. This arrangement increases the distance between the motor and the long lead, so that the height of the reduction gear box is increased while providing a suitable height space for the installation of the motor. The design is reasonable and easy to install. Multiple reduction gear boxes can be slidably installed on the long lead, and each reduction gear box is connected to a separate motor and seat, so that multiple seats can be installed on a horizontal drive. The reduction gear boxes of the utility model are preferably 3, which are installed in a shared manner to achieve horizontal displacement of 3 rows of seats. The structure is simple, further improves installation efficiency, and increases the size of the long lead. The length of the long lead is preferably 1.5 meters to meet the requirements of horizontal displacement of the seats.

[0006] The utility model is further provided with: the left box body and the right box body are fixedly connected by multiple bolts, the right box body is provided with a countersunk hole for accommodating the bolts and nuts on the side facing away from the fastening surface, and the left box body is provided with a screw hole adapted to the bolt at the position corresponding to the countersunk hole.

[0007] By adopting the above technical solution, when the left box body and the right box body are buckled together, they are fixed and installed by bolts, and the structure is stable. The countersunk holes are set to accommodate the nuts of the bolts after installation, further reducing the volume of the assembled reduction gearbox.

[0008] The utility model is further provided with: a positioning assembly is provided on the fastening surfaces of the left box body and the right box body, and the positioning assembly includes a positioning column and a positioning hole adapted to the positioning column. There are four positioning columns, and each positioning column is respectively provided at the four corners of the right box body, and the positioning holes are provided on the left box body and correspond to the positions of the positioning columns.

[0009] By adopting the above technical solution and setting the positioning assembly, when the left box body and the right box body are buckled together, the assembly positions of the left box body and the right box body are positioned through the cooperation of the positioning posts and the positioning holes, which facilitates subsequent fixed installation and further improves the convenience of the installation structure. The positioning posts are respectively distributed at the four corners of the right box body, making the structure more stable.

[0010] The utility model is further provided with: a first arc-shaped block protruding upward is provided on the top surface of the reduction box corresponding to the position of the worm.

[0011] By adopting the above technical solution, the setting of the first arc block increases the structural strength of the corresponding worm position, plays a certain buffering role, avoids deformation when in contact with other components, improves service life, and saves materials. During assembly, the first arc block can also be used to distinguish the installation direction of the reducer, facilitates assembly, and further improves installation efficiency.

[0012] The utility model is further provided with shaft sleeves on both sides of the first worm gear, the transmission worm gear and the second worm gear, and circumferential positioning blocks are provided on the shaft sleeves, and the circumferential positioning blocks are clamped between the fastening surfaces of the left box body and the right box body.

[0013] By adopting the above technical solution, the setting of the shaft sleeve can reduce the friction of the first worm gear, the transfer worm gear and the second worm gear during transmission, and improve the smoothness of transmission. The circumferential positioning block is used to fix the shaft sleeve circumferentially to prevent the shaft sleeve from rotating, thereby improving the stability and reliability of the transmission of the first worm gear, the transfer worm gear and the second worm gear, and at the same time can also reduce the noise generated when the shaft sleeve rotates relative to the reduction box.

[0014] The utility model is further provided with: the outer walls of the left box body and the right box body on the side facing away from the fastening surface are provided with symmetrically arranged weight-reducing recesses on both sides facing the screw rod hole.

[0015] By adopting the above technical solution, the provision of the weight-reducing recess can reduce the overall weight of the reduction gearbox without affecting the structural strength, thereby saving materials and reducing costs.

[0016] The utility model is further provided with: a second arc-shaped block protruding outwards is provided at a position of the weight-reducing recess corresponding to the screw hole.

[0017] By adopting the above technical solution, the setting of the second arc block increases the structural strength of the corresponding screw hole position, plays a certain buffering role, avoids deformation when contacting with other components, and improves service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of an embodiment of the utility model;

[0019] Figure 2 for Figure 1 A magnified view of the structure of part A;

[0020] Figure 3 This is an exploded view of the reduction gearbox structure according to an embodiment of the present invention;

[0021] The meaning of the numbers in the figure: 1. Long screw, 2-reduction box, 201-left box body, 202-right box body, 3-worm, 4-first worm gear, 5-transfer worm gear, 6-second worm gear, 7-screw hole, 8-bolt, 9-countersunk hole, 10-screw hole, 11-positioning assembly, 1101-positioning column, 12-first arc block, 13-sleeve, 14-circumferential positioning block, 15-weight reduction recess, 16-second arc block. DETAILED DESCRIPTION

[0022] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

[0023] See attached Figure 1-3The utility model discloses an electric long slide rail horizontal driver for a car seat, comprising a long screw 1 and a plurality of reduction gear boxes 2 slidably mounted on the long screw 1, the reduction gear box 2 comprising a left box body 201 and a right box body 202, the left box body 201 and the right box body 202 being interlocked with each other, and a worm, a first worm gear 4, a transmission worm gear 5 and a second worm gear 6 being installed inside the box body from top to bottom, the worm 3 being used to connect to the output end of the motor, the first worm gear 4 being meshed with the worm 3 for transmission, the transmission worm gear 5 being meshed with the first worm gear 4 and the second worm gear 6 for transmission respectively, a threaded hole for the long screw 1 to pass through and being threadedly connected to the long screw 1 is provided in the second worm gear 6, and screw holes 7 which are arranged on the same axis as the threaded holes are opened on both sides of the reduction gear box 2. The worm 3 is connected to the motor for transmission, and the first worm gear 4, the transfer worm gear 5 and the second worm gear 6 are meshed and transmitted in sequence. This arrangement increases the distance between the motor and the long lead rod 1, thereby increasing the height of the reduction gear 2 while providing a suitable height space for the installation of the motor. The design is reasonable and easy to install. Multiple reduction gear boxes 2 can be slidably installed on the long lead rod 1. Each reduction gear box 2 is connected to a separate motor and a seat, so that multiple seats can be installed on a horizontal drive. The reduction gear boxes 2 in this embodiment are preferably 3, which are installed in a shared manner to achieve horizontal displacement of 3 rows of seats. The structure is simple, further improves installation efficiency, and increases the size of the long lead rod 1. The length of the long lead rod 1 is preferably 1.5 meters to meet the requirements of horizontal displacement of the seats.

[0024] This embodiment further provides that the left and right housings 201, 202 are fixedly connected by a plurality of bolts 8. The right housing 202 is provided with countersunk holes 9 on the side facing away from the engagement surface for accommodating the nuts of the bolts 8. The left housing 201 is provided with screw holes 10 corresponding to the positions of the countersunk holes 9. When the left and right housings 201, 202 are engaged, they are fixed by the bolts 8, providing a stable structure. The countersunk holes 9 are provided to accommodate the nuts of the installed bolts 8, further reducing the volume of the assembled reduction gearbox 2.

[0025] This embodiment further provides that: a positioning assembly 11 is provided on the fastening surfaces of the left and right boxes 201, 202. The positioning assembly 11 includes a positioning post 1101 and a positioning hole (not shown in the figure) adapted to the positioning post 1101. Four positioning posts 1101 are provided, each of which is provided at the four corners of the right box 202. The positioning holes are provided on the left box 201 and correspond to the positions of the positioning posts 1101. The provision of the positioning assembly 11 allows the left and right boxes 201, 202 to be positioned in their respective assembly positions through the cooperation of the positioning posts 1101 and the positioning holes when the left and right boxes 201, 202 are fastened together, facilitating subsequent fixed installation and further improving the convenience of the installation structure. The positioning posts 1101 are distributed at the four corners of the right box 202, making the structure more stable.

[0026] This embodiment further provides a first, upwardly protruding curved block 12 on the top surface of the reduction gearbox 2, corresponding to the position of the worm 3. The provision of the first curved block 12 increases the structural strength corresponding to the position of the worm 3, provides a certain buffering effect, and prevents deformation caused by contact with other components, thereby extending service life and saving materials. During assembly, the first curved block 12 can also be used to distinguish the installation orientation of the reduction gearbox 2, facilitating assembly and further improving installation efficiency.

[0027] This embodiment further provides that: sleeves 13 are sleeved on both sides of the first worm gear 4, the transfer worm gear 5, and the second worm gear 6. Circumferential positioning blocks 14 are provided on the sleeves 13. The circumferential positioning blocks 14 are sandwiched between the engaging surfaces of the left housing 201 and the right housing 202. The provision of the sleeves 13 can reduce the friction between the first worm gear 4, the transfer worm gear 5, and the second worm gear 6 during transmission, thereby improving the smoothness of transmission. The circumferential positioning blocks 14 are used to circumferentially fix the sleeves 13 to prevent the sleeves 13 from rotating, thereby improving the stability and reliability of the transmission of the first worm gear 4, the transfer worm gear 5, and the second worm gear 6. At the same time, it can also reduce the noise generated when the sleeves 13 rotate relative to the reduction gear box 2.

[0028] This embodiment further provides that: the outer walls of the left and right housings 201 and 202 facing away from the engagement surface are provided with symmetrically arranged weight-reducing recesses 15 on both sides facing the screw hole 7. The provision of these weight-reducing recesses 15 reduces the overall weight of the reduction gearbox 2 without affecting the structural strength, thereby saving materials and reducing costs. The countersunk holes 9 are preferably provided in the right housing 202 at the locations of the weight-reducing recesses 15, further reducing the weight of the reduction gearbox 2.

[0029] This embodiment further provides that the weight-reducing recess 15 is provided with an outwardly protruding second arc block 16 at the position corresponding to the screw hole 7. The provision of the second arc block 16 increases the structural strength at the position corresponding to the screw hole 7, provides a certain buffering effect, prevents deformation caused by contact with other components, and improves service life.

[0030] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications based on the above assumptions should also be regarded as within the scope of protection of the present invention.

Claims

1. A horizontal actuator for an electric long slide rail for a car seat, characterized by: The gearbox comprises a long lead screw and a plurality of reduction gears slidably mounted on the long lead screw, the reduction gearbox comprises a left box body and a right box body, the left box body and the right box body are interlocked with each other, and a worm, a first worm gear, a transmission worm gear and a second worm gear are installed inside the left box body and the right box body in sequence from top to bottom, the worm is used to connect the output end of the motor, the first worm gear is meshed with the worm for transmission, the transmission worm gear is respectively meshed with the first worm gear and the second worm gear for transmission, a threaded hole is provided in the second worm gear for the long lead screw to pass through and is threadedly connected to the long lead screw, and lead screw holes are provided on both sides of the reduction gearbox and are arranged on the same axis as the threaded hole.

2. The electric long slide rail horizontal actuator for a car seat according to claim 1, characterized in that: The left box body and the right box body are fixedly connected by multiple bolts. The right box body is provided with a countersunk hole for accommodating the bolts and nuts on the side facing away from the fastening surface, and the left box body is provided with a screw hole adapted to the bolt at the position corresponding to the countersunk hole.

3. The electric long slide rail horizontal driver for a car seat according to claim 1, characterized in that: A positioning assembly is provided on the fastening surfaces of the left box body and the right box body. The positioning assembly includes a positioning column and a positioning hole adapted to the positioning column. There are four positioning columns, each of which is respectively provided at the four corners of the right box body. The positioning holes are provided on the left box body and correspond to the positions of the positioning columns.

4. The electric long slide rail horizontal actuator for a car seat according to claim 1, characterized in that: A first arc-shaped block protruding upward is provided on the top surface of the reduction box corresponding to the position of the worm.

5. The electric long slide rail horizontal driver for a car seat according to claim 1, characterized in that: Both sides of the first worm gear, the transfer worm gear and the second worm gear are sleeved with shaft sleeves, and circumferential positioning blocks are provided on the shaft sleeves. The circumferential positioning blocks are clamped between the fastening surfaces of the left box body and the right box body.

6. The electric long slide rail horizontal actuator for a car seat according to claim 1, characterized in that: The outer walls of the left box body and the right box body on one side facing away from the fastening surface are provided with symmetrically arranged weight-reducing recesses on both sides facing the screw rod hole.

7. The electric long slide rail horizontal actuator for a car seat according to claim 6, characterized in that: The weight-reducing recess is provided with a second arc-shaped block protruding outward at a position corresponding to the screw rod hole.

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