CN216331569U

CN216331569U - Electric long sliding rail beneficial to improving transmission noise

Info

Publication number: CN216331569U
Application number: CN202122308852.5U
Authority: CN
Inventors: 杨清春; 张果; 唐国庆; 黎清茂; 辛艺
Original assignee: Chongqing Adient Automotive Components Co Ltd
Current assignee: Chongqing Adient Automotive Components Co Ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-19
Anticipated expiration: 2031-09-23

Abstract

The utility model discloses an electric long slide rail beneficial to improving transmission noise, which comprises two groups of upper slide rails and lower slide rails corresponding to the upper slide rails, wherein the upper slide rails are assembled on the corresponding lower slide rails in a front-back sliding manner through screw rod nut mechanisms, a transfer gear box is arranged at the upper parts of the upper slide rails, a longitudinal transmission shaft is connected between the transfer gear box and the screw rod nut mechanisms, a support is fixedly arranged between the two groups of upper slide rails, a horizontal transmission shaft is rotatably arranged on the support, two ends of the horizontal transmission shaft are in power connection with the transfer gear box, a motor is arranged on the support, an output shaft of the motor is vertical to the horizontal transmission shaft, and a speed reduction transmission assembly is arranged between the two output shafts and used for reducing the input rotating speed of the transfer gear box. The utility model has the beneficial effects that: the device has the technical advantages of low running noise, small vibration, good smoothness and the like.

Description

Electric long sliding rail beneficial to improving transmission noise

Technical Field

The utility model belongs to the technical field of vehicle sliding rails, and particularly relates to an electric long sliding rail beneficial to improving transmission noise.

Background

In the early technology of seat rails, after the rails are assembled on a vehicle, the upper and lower rail assemblies are exposed on the vehicle body floor, and for vehicles with long rail travel, such as commercial vehicles, the rails are exposed on the vehicle body floor, which not only occupies the activity space of passengers in the vehicle, but also affects the interior trim of the vehicle, and seriously reduces the high-grade feeling of the vehicle.

In order to solve the technical problem that the sliding rail is exposed on the floor of the vehicle body, patent document CN212313336U discloses a hidden-installation sliding rail assembly for the seat of the vehicle, in which a longitudinal transmission shaft is vertically installed in the sliding rail, and then a transfer gear box is used to introduce the horizontal driving force of a transverse transmission shaft into the interior of the sliding rail assembly in a vertical manner, so as to solve the technical problem that the traditional sliding rail is exposed on the floor of the vehicle body after being assembled.

In the prior art, the output rotating speed of the driving motor is directly transmitted into the transfer gear box at the speed ratio of 1:1, so that the rotating speed of the gear in the transfer gear box is relatively high, the adjusting noise of the sliding rail is high, and the comfort is to be improved urgently.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present invention provides an electric long sliding rail which is helpful for improving transmission noise, so as to solve the technical problem of large adjustment noise pointed out in the background art.

In order to achieve the purpose, the technical scheme of the utility model is as follows:

the utility model provides a help improving electronic long slide rail of transmission noise, includes two sets of last slide rails, and with the corresponding lower slide rail of last slide rail, go up the slide rail and all assemble on the lower slide rail that corresponds through screw-nut mechanism with sliding around, go up slide rail upper portion and all install the transfer gear box, this transfer gear box with be connected with longitudinal drive shaft between the screw-nut mechanism, its key lies in: two sets of go up fixed mounting between the slide rail has the support, rotate on the support and install horizontal drive shaft, horizontal drive shaft's both ends all with transfer gear box power is connected, install the motor on the support, the output shaft and the horizontal drive shaft of motor are perpendicular, and are equipped with the speed reduction transmission subassembly between the two for reduce transfer gear box's input rotational speed.

By adopting the structure, the input rotating speed of the transfer gear box is reduced by arranging the speed reduction transmission assembly, so that related parts such as gears, screw rod nut mechanisms and the like in the transfer gear box have lower rotating speeds, the transmission noise and vibration of the whole sliding rail system are favorably reduced, and the comfort is better.

Preferably, the method comprises the following steps: the speed reduction transmission assembly comprises a worm wheel and a worm, the worm wheel is sleeved on the horizontal transmission shaft, and the worm is sleeved on an output shaft of the motor. The worm gear is used as a speed reduction transmission component, the transmission ratio can reach 3-10, and the gear transmission mechanism has the advantages of low noise, low cost, wide transmission ratio adjusting range and the like.

Preferably, the method comprises the following steps: the bracket is provided with a first mounting groove and a second mounting groove respectively at positions corresponding to the speed reduction transmission assembly and the motor, and protruding blocks are distributed on the bottoms of the first mounting groove and the second mounting groove in an array mode and are constructed into upwards protruding conical structures. By adopting the structure, the lug with the conical structure can reduce the running noise of the slide rail system at the position of the motor and the speed reduction transmission assembly.

Preferably, the method comprises the following steps: the support includes first supporting part to and follow the second supporting part of first supporting part middle part to one side evagination, first supporting part is the strip structure, and its both ends extend to respectively go up the slide rail position, the shaping of second mounting groove is on the second supporting part, and the shaping of first mounting groove is at the middle part of first supporting part. By adopting the structure, the structure is reasonable in design, and the advantage of convenience in product assembly is achieved.

Preferably, the method comprises the following steps: the upper end of the upper sliding rail is welded with an assembly part, and the end part of the first supporting part and the middle rotating gearbox are fixed on the assembly part. With the above structure, assembly is facilitated.

Preferably, the method comprises the following steps: go up slide rail upper portion and be formed with undercut's supporting platform, the middle part of rigging part has undercut's welding part, and the outer end of welding part is equipped with along vertical extension's vertical board, and the inner is equipped with the horizontal plate that extends along the horizontal direction, the transfer gear box is located the welding part top to through screw fixed connection in on the vertical board, the tip of first supporting part is in through screw fixed assembly on the horizontal plate. By adopting the structure, the transfer gear box and the support can be conveniently and fixedly assembled at the upper end of the upper slide rail. The supporting platform which is sunken downwards can reduce the overall installation height, so that the product structure is more compact.

Preferably, the method comprises the following steps: the transfer gear box comprises a left box cover and a right box cover, and the left box cover and the right box cover are both provided with support lugs fixedly connected with the vertical plates. By adopting the structure, the installation is more convenient.

Preferably, the method comprises the following steps: and a first bevel gear and a second bevel gear which are meshed with each other are arranged inside the left box cover and the right box cover. By adopting the structure, the transmission smoothness is good, and the noise is low.

Preferably, the method comprises the following steps: the horizontal transmission shaft is a square shaft, a hexagonal shaft, a plum blossom-shaped shaft or a spline shaft. By adopting the structure, the strength is high, the large torque can be borne, and the deformation is not easy.

Preferably, the method comprises the following steps: the first supporting part is provided with a through hole penetrating through the first supporting part in the length direction, the horizontal transmission shaft is installed in the through hole, and criss-cross reinforcing ribs are distributed on the outer surface of the first supporting part. By adopting the structure, the structural strength of the support can be ensured, the sliding rail system runs more stably, and the vibration is smaller.

Compared with the prior art, the utility model has the beneficial effects that:

1. through setting up the speed reduction transmission subassembly, reduced the input rotational speed of transfer gear box to make inside gear of transfer gear box and relevant parts such as lead screw nut mechanism have lower rotational speed, electronic long slide rail has technical advantages such as the running noise is low, the vibration is little, the ride comfort is good, is applicable to middle and high end car seat.

2. The input rotating speed of the transfer gear box is reduced, so that the gear box can be made of plastic, and the cost is lower.

3. The support structure has reasonable design, can fully improve the running noise of the electric slide rail and has the technical advantage of good assembling convenience.

Drawings

Fig. 1 is a schematic structural view of an electric long slide rail (only a part of a lower slide rail is shown);

fig. 2 is a schematic partial exploded view of the electric long slide rail (only one set of upper and lower slide rails is shown);

FIG. 3 is a schematic structural view of a stent;

FIG. 4 is a top view of the bracket;

fig. 5 is an exploded view of the transfer gearbox.

Detailed Description

The present invention will be further described with reference to the following examples and the accompanying drawings.

As shown in fig. 1, 3 and 4, an electric long slide rail includes two sets of upper slide rails 2 and two sets of lower slide rails 1, the upper slide rails 2 are slidably mounted on the corresponding lower slide rails 1, a support 5 is fixedly mounted between the two sets of upper slide rails 2, the support 5 has a first support portion 5d and a second support portion 5e, wherein the first support portion 5d is in a strip-shaped structure, the second support portion 5e protrudes outwards and vertically from the middle of the first support portion 5d, a first mounting groove 5a is formed in the middle of the first support portion 5d, a second mounting groove 5b is formed in the second support portion 5e, a through hole 5f penetrating through the first support portion in the length direction is formed in the first support portion 5d, an axial groove 5j is formed between the first mounting groove 5a and the second mounting groove 5b, and the axial groove 5j is perpendicular to the length direction of the through hole 5 f.

As shown in fig. 1 and 2, a set of motor 6 is installed in the second installation groove 5b of the bracket 5, an output shaft 6a of the motor 6 is located in the shaft groove 5j, a horizontal transmission shaft 8 is rotatably installed in the through hole 5f of the bracket 5, a set of transfer gear boxes 4 are respectively installed at two ends of the bracket 5, two ends of the horizontal transmission shaft 8 are both in power connection with the transfer gear boxes 4, and a reduction transmission assembly 7 is installed in the first installation groove 5a of the bracket 5.

Go up still to be equipped with lead screw nut mechanism 3 between slide rail 2 and the lower slide rail 1, lead screw nut mechanism 3 links up through 11 powers of longitudinal drive shaft between 4 with the transfer gear box, and the vertical setting of longitudinal drive shaft 11 is in last slide rail 2, and after the assembly of electronic long slide rail was accomplished, transfer gear box 4 just in time was located the upper portion of last slide rail 2.

The power transmission path of the electric long slide rail is as follows: the motor 6 → the output shaft 6a → the worm 7b → the worm wheel 7a → the horizontal transmission shaft 8 → the transfer gear box 4 → the longitudinal transmission shaft 11 → the screw and nut mechanism 3, and the screw and nut mechanism 3 can drive the upper slide rail 2 to slide on the lower slide rail 1.

In this embodiment, a worm wheel 7a and worm 7a speed reduction transmission assembly is arranged between the output shaft 6a of the motor 6 and the transfer gear box 4, and in the motion path of the electric long slide rail, the speed reduction function of the worm wheel 7a and worm 7a can reduce the input rotation speed of the transfer gear box 4, so that the gear inside the transfer gear box 4 and the related components such as the screw-nut mechanism 3 have lower rotation speeds, thereby reducing the transmission noise and vibration of the whole electric slide rail, and the comfort is better. Meanwhile, the horizontal transmission shaft 8 is preferably a square shaft for easy installation and bearing of a larger torque.

As shown in fig. 2 to 4, the first mounting groove 5a and the second mounting groove 5b have a plurality of protrusions 5c distributed in an array on the bottom of the groove, in this embodiment, the protrusions 5c are configured as a cone-shaped structure protruding upward, the reduction gear assembly 7 further includes a housing 7c for mounting the worm wheel 7a and the worm 7a, the housing 7c is mounted in the first mounting groove 5a, and the protrusions 5c having the cone-shaped structure can reduce the operation noise of the motor 6 and the reduction gear assembly 7.

In the embodiment, the bracket 5 and the idler gear box 4 are fixed on the upper end of the upper slide rail 2 through the assembling component 9, and the specific installation structure is as follows:

referring to fig. 2 to 5, a support platform 2a recessed downward is formed at the upper portion of the upper slide rail 2, a welding portion 9b recessed downward is formed at the middle portion of the assembling member 9, the welding portion 9b is fixed on the support platform 2a by welding, a vertical plate 9a extending in the longitudinal direction is provided at the outer end of the welding portion 9b, a horizontal plate 9c extending in the horizontal direction is provided at the inner end of the welding portion 9b, the transfer gearbox 4 is located above the welding portion 9b, support lugs 4c are provided on both the left box cover 4a and the right box cover 4b of the transfer gearbox 4, and the support lugs 4c are fixedly connected to the vertical plate 9a by first screws 10; secondly, the bracket 5 is provided with mounting parts 5h at the two ends of the first supporting part 5d, the mounting parts 5h are provided with connecting holes 5i, and the bracket 5 can be locked and attached on the horizontal plate 9c of the assembling part 9 by the second screws 12 penetrating through the connecting holes 5 i.

Connecting hole 5i on the installation department 5h of first supporting part 5d wherein one end is the bar hole, so design, can adapt to the clearance error between two sets of upper slide rails 2 to promote assembly efficiency.

The surface distribution of first supporting part 5d has vertically and horizontally staggered's strengthening rib 5g, and strengthening rib 5g not only can guarantee the structural strength of support 5, but also can make the operation of slide rail system more stable, and the vibration is littleer.

Referring to fig. 5, a first bevel gear 4d and a second bevel gear 4e are disposed inside a left case cover 4a and a right case cover 4b of the transfer gear box 4, which are engaged with each other, and bevel gear transmission has the advantages of good transmission smoothness and low noise, and is helpful for further improving the running noise of the electric long sliding rail.

As shown in fig. 2, the screw-nut mechanism 3 applied to the slide rail system is a conventional mature technology, which is only briefly described in this embodiment, the screw-nut mechanism 3 includes a screw rod 3b and a lower gear box 3a, the screw rod 3b is fixedly installed in the lower slide rail 1, the lower gear box 3a is fixed at the lower portion of the upper slide rail 2 and is sleeved on the screw rod 3b, the lower gear box 3a has a turbine and a worm that are engaged with each other inside, the worm is connected to the longitudinal transmission shaft 11, the turbine is threadedly sleeved on the screw rod 3b, and based on this structure, the longitudinal transmission shaft 11 rotates to drive the lower gear box 3a to move axially along the screw rod 3b, thereby driving the upper slide rail 2 to slide on the lower slide rail 1.

Finally, it should be noted that the above-mentioned description is only a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. The utility model provides a help improving electronic long slide rail of transmission noise, includes two sets of last slide rail (2), and with go up slide rail (1) corresponding down of slide rail (2), go up slide rail (2) and all can assemble on corresponding lower slide rail (1) through screw-nut mechanism (3) with sliding around, go up slide rail (2) upper portion and all install transfer gear case (4), this transfer gear case (4) with be connected with longitudinal drive axle (11), its characterized in that between screw-nut mechanism (3): two sets of go up fixed mounting between slide rail (2) has support (5), rotate on support (5) and install horizontal drive shaft (8), the both ends of horizontal drive shaft (8) all with transfer gear box (4) power is connected, install motor (6) on support (5), output shaft (6 a) of motor (6) are perpendicular with horizontal drive shaft (8), and are equipped with between the two and reduce speed transmission subassembly (7) for reduce the input rotational speed of transfer gear box (4).

2. The electric long slide rail contributing to improvement of transmission noise according to claim 1, wherein: the speed reduction transmission assembly (7) comprises a worm wheel (7 a) and a worm (7 b), the worm wheel (7 a) is sleeved on the horizontal transmission shaft (8), and the worm (7 b) is sleeved on an output shaft (6 a) of the motor (6).

3. The electric long slide rail contributing to improvement of transmission noise according to claim 1, wherein: the support (5) is equipped with first mounting groove (5 a) and second mounting groove (5 b) respectively in the position that corresponds speed reduction drive subassembly (7) and motor (6), the equal array distribution of tank bottom of first mounting groove (5 a) and second mounting groove (5 b) has lug (5 c), lug (5 c) are constructed into the bellied toper structure that makes progress.

4. The electric long slide rail contributing to improvement of transmission noise according to claim 3, wherein: support (5) are including first supporting part (5 d) to and from first supporting part (5 d) middle part second supporting part (5 e) to one side evagination, first supporting part (5 d) are the strip structure, and its both ends extend to respectively go up slide rail (2) position, second mounting groove (5 b) shaping is on second supporting part (5 e), and first mounting groove (5 a) shaping is at the middle part of first supporting part (5 d).

5. The electric long slide rail contributing to improvement of transmission noise according to claim 4, wherein: the upper end of the upper sliding rail (2) is welded with an assembling part (9), and the end part of the first supporting part (5 d) and the middle rotating gearbox (4) are fixed on the assembling part (9).

6. The electric long slide rail contributing to improvement of transmission noise according to claim 5, wherein: go up slide rail (2) upper portion and be formed with undercut's supporting platform (2 a), the middle part of rigging part (9) has undercut's welding part (9 b), and the outer end of welding part (9 b) is equipped with vertical board (9 a) along longitudinal extension, and the inner is equipped with horizontal plate (9 c) along the horizontal direction extension, transfer gear box (4) are located welding part (9 b) top to through screw fixed connection in on vertical board (9 a), the tip of first supporting part (5 d) is in through the assembly of screw fixation on horizontal plate (9 c).

7. The electric long slide rail contributing to improvement of transmission noise according to claim 6, wherein: transfer gear box (4) include left case lid (4 a) and right case lid (4 b), all be equipped with on left case lid (4 a) and right case lid (4 b) with vertical board (9 a) fixed connection's journal stirrup (4 c).

8. The electric long slide rail contributing to improvement of transmission noise according to claim 7, wherein: and a first bevel gear (4 d) and a second bevel gear (4 e) which are meshed with each other are arranged inside the left box cover (4 a) and the right box cover (4 b).

9. The electric long slide rail contributing to improvement of transmission noise according to claim 1, wherein: the horizontal transmission shaft (8) is a square shaft.

10. The electric long slide rail contributing to improvement of transmission noise according to claim 4, wherein: the first supporting part (5 d) is provided with a through hole (5 f) penetrating through the length direction of the first supporting part, the horizontal transmission shaft (8) is installed in the through hole (5 f), and criss-cross reinforcing ribs (5 g) are distributed on the outer surface of the first supporting part (5 d).