Bottom layer sliding rail device for automobile welfare seat

Abstract

The utility model belongs to the technical field of automobile parts, and discloses a bottom layer slide rail device for an automobile welfare seat, which comprises two slide rails arranged on an automobile body chassis in parallel, each group of slide rails is rotatably provided with a screw rod, each screw rod is slidably provided with a tackle seat body, and the tackle seat bodies move along the slide rails. A transmission assembly is arranged on the tackle seat body and used for being in transmission connection with the lead screw, the transmission assembly comprises a main driving piece, an auxiliary driving piece and a lead screw nut, the main driving piece and the auxiliary driving piece are assembled in a tooth meshing mode, the auxiliary driving piece is meshed with outer teeth of the lead screw nut, and the lead screw nut is in threaded connection with the lead screw. A driving shaft is integrally formed on the end face of one side of at least one main driving piece, an inner angle hole is formed in the driving shaft and used for being externally connected with a manual driving device, and a driving connecting hole is formed in a main driving piece body. Through the optimized design of the transmission assembly, the two sets of guide rails can be manually and synchronously moved and adjusted, the manual emergency function is added to the bottom-layer sliding rail, and the reliability of the bottom-layer sliding rail device is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile parts, especially relates to a bottom slide rail device for automobile welfare seat. BACKGROUND

[0002] The bottom slide rail is a key component for realizing the convenient movement and adjustment of the seat and is one of important safety components of the automobile, which plays a vital role in the overall performance and safety of the automobile. Usually, the welfare seat slide rail realizes movement and adjustment through manual or motor-driven mode to provide comfortable riding experience for the driver and passenger. However, the manual mechanical mechanism is complex in structure and tedious in operation, which is easy to fail due to improper operation or mechanical failure. The motor-driven mechanism may not work normally due to motor failure or electronic component failure.

[0003] Unlike the conventional automobile seat, the conventional seat only runs in the vehicle, and even if the bottom slide rail cannot move due to failure, it will not affect the driving of the vehicle, so the demand for manual emergency function of the bottom slide rail is relatively low. However, the welfare seat needs to rotate, move forward and extend to the outside of the vehicle. If the bottom slide rail fails in this process and there is no corresponding manual emergency function, the welfare seat will not be able to return to the initial position, thereby affecting the normal operation of the automobile. Therefore, when designing the bottom slide rail of the automobile welfare seat, these factors need to be fully considered to ensure that the slide rail can work normally under various use conditions, so as to find a perfect balance between comfort and safety. SUMMARY

[0004] In order to overcome the above shortcomings, the utility model provides a bottom slide rail device for automobile welfare seat, which can manually synchronize the movement and adjustment of the two groups of guide rails through the optimization design of the transmission assembly, adds the manual emergency function to the bottom slide rail, and improves the reliability of the bottom slide rail device.

[0005] The main technical scheme adopted in the utility model is as follows:

[0006] The utility model provides a bottom slide rail device for car well-being seat, including two mutually parallel slide rails which are arranged on the chassis of car body, each group of slide rail is rotatably installed with a screw rod, each screw rod is slidably installed with a trolley seat body, and the trolley seat body moves along the slide rail, the trolley seat body is provided with transmission assembly, is used for with the transmission connection of screw rod, the transmission assembly includes main drive part, slave drive part and screw rod nut, the main drive part is assembled with the slave drive part through gear meshing, the slave drive part and the outer gear of screw rod nut are mutually engaged, the screw rod nut is threadedly connected on the screw rod, and at least one group of main drive part's one side end face is integrally formed with a drive shaft, the drive shaft is internally provided with an internal corner hole, is used for external connection manual drive arrangement, the main drive part body is internally provided with drive connection hole, is used for connecting the drive shaft of drive motor, and the center axis of internal corner hole and drive connection hole coincides.

[0007] Preferably, it also includes synchronous power assembly, the synchronous power assembly includes connecting plate, connecting support and double-shaft motor, both ends of the connecting plate are installed at the end of two groups of trolley seat body respectively, and move along the slide rail with the trolley seat body, the connecting support is installed at the middle part of the connecting plate, the double-shaft motor is fixedly installed on the connecting support, and the output shaft of both ends of the double-shaft motor is drivenly connected with the drive connection hole on the main drive part respectively.

[0008] Preferably, the output shaft of both ends of the double-shaft motor is rigidly connected inside the motor housing, and one output shaft rotation can drive the coaxial rotation of another output shaft.

[0009] Preferably, a plurality of supporting rollers are installed on both sides of the trolley seat body, and the supporting rollers roll in the sliding groove of the slide rail.

[0010] Preferably, impact blocks are arranged on both sides of at least one end of the trolley seat body.

[0011] Preferably, at least one set of anti-backlash elements is arranged on both sides of the trolley seat body respectively, and the anti-backlash elements are installed in the sliding groove of the slide rail in cooperation with the trolley seat body.

[0012] Beneficial effects: the utility model provides a bottom slide rail device for car well-being seat, which has the following advantages:

[0013] (1) the utility model realizes manual operation while meeting motor driving through the structural optimization design of transmission assembly, and synchronous displacement adjustment of double slide rails can be realized by adjusting only one side, so that the balance of the movement process of well-being seat is ensured, and the reliability of seat adjustment is improved.

[0014] (2) The utility model adds supporting roller, impact block, clearance elimination spare and other auxiliary parts on the trolley seat body, effectively enhances the assembly reliability between the bottom layer slide rail and the trolley seat body, and further significantly improves the stability and safety of the welfare seat. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic view of this embodiment 1;

[0016] Figure 2 It is the partial explosion schematic view of this embodiment 1;

[0017] Figure 3 It is the transmission assembly schematic view (with manual driving device) of this embodiment 1;

[0018] Figure 4 It is the main drive piece structure schematic view of this embodiment 1;

[0019] In the drawing: slide rail 1, screw rod 2, trolley seat body 3, supporting roller 3-1, impact block 3-2, clearance elimination spare 3-3, transmission assembly 4, main drive piece 4-1, slave drive piece 4-2, screw rod nut 4-3, driving shaft 4-4, inner angle hole 4-5, driving connection hole 4-6, manual driving device 5, synchronous power assembly 6, connecting plate 6-1, connecting support 6-2, double-shaft motor 6-3. DETAILED DESCRIPTION

[0020] In order to make the person in this technical field better understand the technical scheme in the present application, the technical scheme in the embodiment of the present application is described clearly and completely below, obviously, the described embodiment is only a part of the embodiment of the present application, not all. Based on the embodiment in the present application, all other embodiments obtained by the person skilled in the art without making creative labor should belong to the scope of protection of the present application. Embodiment 1

[0021] As Figures 1-4As shown, a kind of bottom slide rail device for automobile well-being seat, including two mutually parallel slide rails 1 being arranged on the chassis of vehicle, each group of slide rails 1 is rotatably installed with one lead screw 2, each lead screw 2 is slidably installed with the carriage seat body 3, and the carriage seat body 3 moves along slide rail 1, transmission assembly 4 is arranged on the carriage seat body 3, for transmission connection with lead screw 2.Transmission assembly 4 includes main drive part 4-1, slave drive part 4-2 and screw nut 4-3, main drive part 4-1 is assembled with slave drive part 4-2 by gear engagement, slave drive part 4-2 and the outer teeth of screw nut 4-3 are mutually engaged connection, screw nut 4-3 is threadedly connected on lead screw 2, one side end face of main drive part 4-1 is integrally formed with a drive shaft 4-4, the inner corner hole 4-5 is formed in drive shaft 4-4, for external connection manual driving device 5, the drive connection hole 4-6 is formed in the main drive part 4-1 body, for connecting the drive shaft of drive motor, and the center axes of inner corner hole 4-5 and drive connection hole 4-6 coincide.

[0022] In the utility model, the carriage seat body 3 on the two slide rails 1 can be driven independently, so the main drive part 4-1 can be connected with independent motors to drive the transmission assembly.Based on this, one side end face of the two main drive parts 4-1 is provided with a drive shaft, for external connection of a manual driving device (such as a ratchet wrench, a rotating flexible shaft of an electric gun, etc.), as an emergency manual adjustment of the seat.

[0023] In order to further improve the convenience of emergency manual adjustment of the seat when the motor fails, and at the same time reduce the product cost, in embodiment 1, a synchronous power assembly 6 is further provided, which includes a connecting plate 6-1, a connecting bracket 6-2 and a double-shaft motor 6-3, the two ends of the connecting plate 6-1 are respectively installed on the end parts of the two groups of carriage seat bodies 3, and move along the slide rails 1 with the carriage seat bodies 3, the connecting bracket 6-2 is installed at the middle part of the connecting plate 6-1, the double-shaft motor 6-3 is fixedly installed on the connecting bracket 6-2, and the output shafts at the two ends of the double-shaft motor 6-3 are respectively drivingly connected with the drive connection holes 4-6 on the main drive parts 4.

[0024] In embodiment 1, the output shafts at the two ends of the double-shaft motor 6-3 are rigidly connected inside the motor housing, and the rotation of one output shaft can drive the other output shaft to rotate coaxially.

[0025] Based on the above structure, in embodiment 1, only one side end face of one group of main drive parts 4-1 is integrally formed with a drive shaft, and the other group of main drive parts 4-1 can use existing drive connecting members such as worms.When the motor fails and cannot be adjusted electrically, only manual operation on one side is needed to restore the seat to its original position, and the specific operation method is as follows: insert the manual driving device into the inner corner hole 4-5 on one side of the main drive part 4-1, Figure 3As shown, the main driving part 4-1 is driven to rotate, the main driving part 4-1 drives the trolley seat body 3 to move along the screw rod 2 through the slave driving part 4-2 and the screw rod nut 4-3, and the main driving part 4-1 drives another set of transmission assemblies 4 to work through the double-shaft motor 6-3 connected with the main driving part 4-1, so that the synchronous adjustment of the two sets of trolley seat bodies 3 is realized, the operation is convenient, the number of motors is reduced, the product production cost is effectively reduced, and the reliability of seat adjustment is improved.

[0026] In the utility model, the main driving part and the slave driving part and the slave driving part and the screw rod nut are connected through gear meshing, wherein the outer surface of the main driving part is provided with helical teeth, the slave driving part can be a bevel gear, is used for meshing with the helical teeth, and the outer circumferential surface of the screw rod nut is provided with bevel gears matched with the bevel gears.

[0027] In the utility model, as shown in the figure, Figure 2 As shown, a plurality of supporting rollers 3-1 are installed on the two sides of the trolley seat body 3 and roll in the sliding groove of the slide rail 1. The supporting rollers 3-1 not only can effectively reduce the friction between the trolley seat body 3 and the slide rail 1, thereby prolonging the service life of the slide rail, but also can act as a key load-bearing cantilever support part when the automobile welfare seat is rotated out of the car, thereby ensuring the stability and safety of the seat. In the embodiment 1, two supporting rollers are arranged on each side of the trolley seat body 3.

[0028] In the utility model, in order to further improve the stability of the bottom slide rail of the welfare seat and reduce the deformation and damage of the slide rail as much as possible in the event of a collision accident, as shown in the figure, Figure 2 As shown, a collision block 3-2 is arranged on at least one end side of the trolley seat body 3 and is used for being installed in the sliding groove of the slide rail 1. In the embodiment 1, the two side surfaces of the front and rear ends of the trolley seat body 3 are both provided with the collision block 3-2. The material of the collision block 3-2 is preferably rubber c material.

[0029] In the utility model, as shown in the figure, Figure 2 As shown, at least one set of gap elimination part 3-3 is arranged on each side of the trolley seat body 3 and is used for being installed in the sliding groove of the slide rail 1. This is because the trolley seat body 3 and the slide rail 1 may generate small gaps between them due to material wear, fatigue and temperature change and other factors after long-term use. The existence of these gaps may cause the trolley seat body 3 to shake or be unstable during movement, thereby affecting the precision and stability of the entire welfare seat system. The utility model sets the gap elimination part 3-3 and utilizes the elastic deformation capacity of the gap elimination part 3-3 to eliminate or reduce these gaps, so that the trolley and the slide rail keep close contact, thereby improving the stability of the system. In the embodiment 1, two sets of gap elimination parts 3-3 are arranged on each side surface of the trolley seat body 3.

[0030] The gap eliminating piece can be but is not limited to a plastic piece or a rubber piece with certain elasticity, and the existing gap eliminating pieces with elasticity are all applicable.

[0031] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, can make a number of improvements and refinements, these improvements and refinements should also be considered within the scope of the present application.

Claims

1. A bottom slide rail device for a car welfare seat, comprising two slide rails parallel to each other and arranged on the chassis of the vehicle body, a lead screw rotatably mounted on each slide rail, and a trolley seat slidably mounted on each lead screw, wherein the trolley seat moves along the slide rail, characterized in that, The trolley seat body is provided with a transmission assembly for driving connection with the lead screw, the transmission assembly comprising main driving members, slave driving members and a lead screw nut, the main driving members and the slave driving members being assembled by tooth engagement, the slave driving members and the outer teeth of the lead screw nut being in engagement with each other, the lead screw nut being threadedly connected to the lead screw, at least one side end face of the main driving members being integrally formed with a driving shaft, the driving shaft being provided with an internal corner hole for externally connecting a manual driving device, the main driving member body being provided with a driving connection hole for connecting the driving shaft of a driving motor, and the center axes of the internal corner hole and the driving connection hole being coincident.

2. The underfloor slide rail device for a well-being seat of an automobile according to claim 1, characterized by, The synchronous power assembly comprises a connecting plate, a connecting support and a double-shaft motor, the connecting plate being mounted at the ends of the two groups of trolley seat bodies and moving along the slide rail with the trolley seat bodies, the connecting support being mounted at the middle part of the connecting plate, and the double-shaft motor being fixedly mounted on the connecting support, and the output shafts at the two ends of the double-shaft motor being drivingly connected to the driving connection holes in the main driving members.

3. The underfloor slide rail device for a well-being seat of an automobile according to claim 2, characterized by, The output shafts at the two ends of the double-shaft motor are rigidly connected inside the motor housing, and the rotation of one output shaft can coaxially rotate the other output shaft.

4. The under-bed slide rail device for a well-being seat of an automobile according to claim 1, characterized by, A plurality of support rollers are mounted on the two sides of the trolley seat body and roll in the slide groove of the slide rail.

5. The under-bed slide rail device for a well-being seat of an automobile according to claim 1, characterized by, Collision blocks are arranged on the two side faces of at least one end of the trolley seat body.

6. The under-bed slide rail device for a well-being seat of an automobile according to claim 1, characterized by, At least one group of anti-backlash members are arranged on the two sides of the trolley seat body and are mounted in the slide groove of the slide rail in cooperation with the trolley seat body.

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