JP2020183208A - Electric mechanism of seat rail - Google Patents

Abstract

To provide an electric mechanism of a seat rail which can prevent occurrence of abnormal noise effectively.SOLUTION: An electric mechanism of a seat rail according to the invention includes a front bracket 1b, a rear bracket 1a, a gear assembly, a lead screw 3, and a cushioning member 2. The front bracket 1b and the rear bracket 1a are separated from each other and fixed to an outer rail 8b. The gear assembly is driven by a driving device, is fixed to an inner rail 8a of the seat rail, and engages with the lead screw 3. The cushioning member 2 is disposed at the rear bracket 1a and serves as a cushion between the gear assembly and the rear bracket 1a to prevent abnormal noise.SELECTED DRAWING: Figure 2

Description

The present invention relates to a slide rail, and more particularly to an electric mechanism of a seat rail capable of effectively preventing abnormal noise.

As for the seat, taking an automobile seat as an example, a seat rail that can slide back and forth is provided between the seat and the vehicle body in order to adjust the position of the automobile seat in the automobile. The seat rails include two slide rails that are spaced apart from each other. Each slide rail includes an outer rail fixed to the vehicle body and an inner rail slidably connected to the outer rail. The seat is fixed to the inner rail.

In order to control the sliding of the inner rail with respect to the outer rail, an electric slide rail that drives the inner rail to slide with respect to the outer rail has been introduced on the market.

However, in the existing electric slide rail, when the inner rail is driven to slide to the end of the stroke, for example, when a tall user slides the seat toward the rear of the vehicle body to the end, adjacent parts collide with each other. It has been pointed out that abnormal noise is generated as a result, and in particular, it has been pointed out when such abnormal noise is generated in a luxury car.

An object of the present invention is to provide an electric mechanism for a seat rail capable of effectively preventing abnormal noise.

In order to achieve the above object, the electric mechanism of the seat rail according to the present invention is arranged between the inner rail and the outer rail of the slide rail, driven by a driving device, and fixed to the outer rail apart from each other. A gear that is fixedly connected to the front bracket and the rear bracket, the front bracket and the rear bracket, and is fixed to the inner rail, driven by the driving device, and meshes with the lead screw. It comprises an assembly and a cushioning member selectively located on one of the gear assembly and the rear bracket, the cushioning member being between the gear assembly and the rear bracket to prevent noise. Acts as a buffer.

The present invention has an effect of preventing abnormal noise from being generated when the slide rail is slid to the end as compared with the prior art.

It is a figure which shows the seat rail of this invention and its electric mechanism. It is a schematic perspective view which shows a part of FIG. 1 of this invention. It is a schematic exploded view which shows a part of FIG. 1 of this invention. It is an exploded perspective view which shows the cushioning member and the rear bracket of this invention. FIG. 1 is a schematic cross-sectional view of FIG. 1 of the present invention viewed from a certain angle. It is an enlarged view which shows a part of FIG. 5 of this invention. FIG. 1 is a schematic cross-sectional view of FIG. 1 of the present invention viewed from another angle. It is an enlarged view which shows a part of FIG. 7 of this invention.

The technical means of the present invention will be described in detail below with reference to the drawings, but the scope of claims of the present invention is not limited.

As shown in FIG. 1, the present invention provides an electric mechanism for a seat rail, and in the present embodiment, the seat rail of an automobile will be described as an example. The seat rails include two slide rails 800 arranged in parallel at intervals from each other, and each slide rail 800 has an outer rail 8b fixed to the vehicle body and an inner rail slidably connected to the outer rail 8b. Includes 8a and. The drive device 7 simultaneously drives the inner rail 8a of each slide rail 800 and slides the inner rail 8a with respect to the outer rail 8b. The seat (not shown) is fixed to the inner rail 8a.

As shown in FIGS. 1 to 3 and 5 to 8, the electric mechanism 100 of the present invention includes a front bracket 1b, a rear bracket 1a, a cushioning member 2, a lead screw 3, and a gear assembly 5. , The mounting bracket 4, the plurality of fixing brackets 6, and the connecting bracket H are preferably included.

The front bracket 1b and the rear bracket 1a are separated from each other and fixed to the inner bottom wall of the outer rail 8b. Preferably, as shown in FIG. 4, the rear bracket 1a includes a bottom plate 11 and two side walls 12 connected in parallel to the two side sides of the bottom plate 11 so as to form a U-shaped structure. Further, the rear bracket 1a may further include a fixing plate 13. The rear bracket 1a is fixed to the outer rail 8b by the fixing plate 13. Here, the fixing plate 13 may be further connected to the two side walls 12 in addition to being connected to the bottom plate 11, and can have better structural strength.

The lead screw 3 is fixedly connected between the front bracket 1b and the rear bracket 1a. The lead screw 3 is mainly sandwiched between the two side walls 12 so as not to rotate with respect to the rear bracket 1a. In this embodiment, as an example, the reed screw 3 has a non-circular portion 31 (for example, at least one cross section may be formed on the outer peripheral edge of the reed screw 3). As a result, the two side walls 12 of the rear bracket 1a can correspondingly sandwich the non-circular portion 31 of the lead screw 3. In particular, the straight inner wall surface of the side wall 12 is sandwiched corresponding to the straight outer cross section of the non-circular portion 31 so that the lead screw 3 cannot rotate with respect to the rear bracket 1a. An insertion space 14 is formed between the bottom plate 11, the two side walls 12, and the lead screw 3 (shown in FIG. 8).

The gear assembly 5 is fixed to the inner top wall of the inner rail 8a and is driven by the drive device 7. Specifically, the drive rod 71 of the drive device 7 is inserted into the first insertion hole 51 of the gear assembly 5, and the drive rod 71 drives the gear assembly 5. The gear assembly 5 is screwed into the lead screw 3 and is movable relative to the lead screw 3. Specifically, the lead screw 3 is inserted into the second insertion hole 52 of the gear assembly 5 to engage the gear assembly 5 and the lead screw 3. As a result, the gear assembly 5 becomes movable with respect to the reed screw 3 after being driven. Preferably, the gear assembly 5 has the mounting bracket 4 described above and is fixed to the inner top wall of the inner rail 8a by the mounting bracket 4.

For example, as shown in FIGS. 3 and 8, the gear assembly 5 may include a gear assembly body (unsigned) and a mounting bracket 4. The gear assembly body is fixed in the mounting bracket 4. In other embodiments not shown, the gear assembly body may have mounting brackets 4 protruding from itself.

The cushioning member 2 may be arranged in the rear bracket 1a or the gear assembly 5, but the present invention is not limited thereto. In the present embodiment, the case where the parts are arranged on the rear bracket 1a will be described as an example. The cushioning member 2 may be made of various cushioning materials, but the present invention is not limited thereto. In this embodiment, the one made of rubber will be described as an example.

As shown in FIGS. 4 and 8, preferably, the cushioning member 2 includes the buffering body 21, and the buffering body 21 has the holding port 211, so that the cushioning member 2 sandwiches the lead screw 3 with the holding port 211. be able to. As a result, even if the cushioning member 2 is arranged at an arbitrary position between the gear assembly 5 and the rear bracket 1a after sandwiching the lead screw 3 (for example, the cushioning member 2 is placed on the rear bracket 1a after sandwiching the lead screw 3). (Placed in contact or in contact with the gear assembly 5), it can act as a buffer. Alternatively, the buffer member 2 may include a buffer body 21 and a convex body 22. The convex body 22 protrudes from the cushioning body 21, and the cushioning member 2 is fixed to the rear bracket 1a by inserting the convex body 22 corresponding to the insertion space 14, and the cushioning body 21 is a gear. It is located between the assembly 5 and the rear bracket 1a and can act as a buffer. Of course, preferably, the cushioning member 2 has the holding opening 211 and the convex body 22 at the same time, exerts an optimum fixing effect, and can prevent the cushioning member 2 from falling off from the rear bracket 1a.

As shown in FIGS. 7 and 8, when the user adjusts the seat and moves the gear assembly 5 toward the rear of the vehicle body to the end, the cushioning member 2 exists between the gear assembly 5 and the rear bracket 1a. By doing so, the gear assembly 5 is changed from the conventional case where the gear assembly 5 directly hits the rear bracket 1a to make an abnormal noise, but is changed so as to hit the buffer body 21 of the cushioning member 2 to be buffered, so that the abnormal noise is not generated. In short, the electric mechanism 100 of the present invention can effectively prevent the gear assembly 5 from directly colliding with the rear bracket 1a, and has an abnormal noise prevention function.

As shown in FIGS. 1, 5 and 6, the two fixing brackets 6 are fixed to the inner rails 8a of the two slide rails 800, respectively, and the connecting bracket H is between the two fixing brackets 6. The drive device 7 is detachably connected to the connecting bracket H. Thereby, when the strength test of the slide rail 800 is performed, the connecting bracket H can be easily removed together with the drive device 7. That is, the drive device 7 is modularized with the connecting bracket H. When the user removes the connecting bracket H from the two fixing brackets 6, the entire module can be removed together with the drive device 7, so that the drive element (for example, the motor), the drive shaft (for example, the drive shaft of the motor), and It is not necessary to remove the carriers (for example, brackets for mounting the motor) one by one. Therefore, it has the effect of quick disassembly and quick assembly.

To summarize the above, the present invention applies for a patent based on the Patent Law in order to achieve a desired purpose of use, solve the shortcomings of the prior art, and completely satisfy the application requirements for an invention patent. I hope that the examiner will grant the patent to this case after detailed examination so that the rights of the inventor are guaranteed.

Although preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments. Needless to say, all equivalent changes made by applying the contents of the present invention are included in the scope of the present invention.

100 ... Electric mechanism 1a ... Rear bracket 1b ... Front bracket 11 ... Bottom plate 12 ... Side wall 13 ... Fixing plate 14 ... Insertion space 2 ... Cushioning member 21 ... Cushioning body 211 ... Holding port 22 ... Convex body 3 ... Lead screw 31 ... Non-circular Part 4 ... Mounting bracket 5 ... Gear assembly 51 ... First insertion hole 52 ... Second insertion hole 6 ... Fixed bracket 7 ... Drive device 71 ... Drive rod H ... Connecting bracket 800 ... Slide rail 8a ... Inner rail 8b ... Outer rail

Claims (9)

It is an electric mechanism of the seat rail that is arranged between the inner rail and the outer rail of the slide rail of the seat and is driven by a driving device.
The electric mechanism
The front bracket and the rear bracket, which are separated from each other and fixed to the outer rail,
A reed screw that is fixedly connected between the front bracket and the rear bracket,
A gear assembly that is fixed to the inner rail, driven by the drive, and meshes with the reed screw.
Includes a cushioning member selectively located in one of the gear assembly and the rear bracket.
The electric mechanism of the seat rail, characterized in that the cushioning member serves as a buffer between the gear assembly and the rear bracket in order to prevent abnormal noise. The first aspect of the present invention, wherein the cushioning member has a holding port and is located between the gear assembly and the rear bracket by holding the lead screw in the holding port. Electric mechanism of the seat rail. The cushioning member has a convex body, and an insertion space is formed in the rear bracket.
The electric mechanism for a seat rail according to claim 1 or 2, wherein the cushioning member is fixed to the rear bracket by inserting the convex body corresponding to the insertion space. .. The rear bracket comprises a bottom plate and two side walls connected in parallel to the two side sides of the bottom plate.
The lead screw is sandwiched between the two side walls and
The electric mechanism for a seat rail according to claim 3, wherein the insertion space is formed between the bottom plate, the two side walls, and the lead screw. The lead screw has a non-circular portion, and the non-circular portion is correspondingly sandwiched by the two side walls so as not to rotate with respect to the rear bracket. The electric mechanism of the seat rail according to claim 4. The electric mechanism for a seat rail according to claim 4, wherein the rear bracket further includes at least a fixing plate connected to the bottom plate, and is fixed to the outer rail by the fixing plate. The cushioning member further has a cushioning body
The electric mechanism for a seat rail according to claim 3, wherein the convex body projects from the buffer body. Two fixing brackets fixed to the inner rail of the two slide rails,
Further including a connecting bracket that is detachably connected between the two fixing brackets.
The electric mechanism for a seat rail according to claim 1, wherein the driving device is fixed to the connecting bracket. The electric mechanism for a seat rail according to claim 1, wherein the gear assembly has a mounting bracket and is fixed to the inner rail by the mounting bracket.