CN109572499B - Locking device for vehicle seat rail - Google Patents
Locking device for vehicle seat rail Download PDFInfo
- Publication number
- CN109572499B CN109572499B CN201810316607.9A CN201810316607A CN109572499B CN 109572499 B CN109572499 B CN 109572499B CN 201810316607 A CN201810316607 A CN 201810316607A CN 109572499 B CN109572499 B CN 109572499B
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- CN
- China
- Prior art keywords
- lock pin
- lock
- guide rail
- locking
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
- B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
- B60N2/02—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable
- B60N2/04—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable
- B60N2/06—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable
- B60N2/08—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable characterised by the locking device
- B60N2/0806—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles the seat or part thereof being movable, e.g. adjustable the whole seat being movable slidable characterised by the locking device with pin alignment systems, e.g. with at least one of a plurality of locking pins always aligned w.r.t. at least one of a plurality of pin-receiving elements
Abstract
The invention relates to a vehicle seat rail lock device, wherein a serration part (44) is formed on the outer periphery of a lock pin (40). When a collision accident occurs, the serration part 44 is printed on the guide hole 31 of the lock guide block 30 to form a serration trace to absorb the impact, the friction area is increased, the friction force is increased to prevent the lock pin 40 from falling off, and thus, a firm locking state is maintained. The saw teeth of the saw tooth part (44) are formed in an up-down straight line shape, so that the lock pin (40) is not clamped in the guide hole (31) when moving up and down, and the operation feeling of the unlocking rod (60) is improved.
Description
Technical Field
The present invention relates to a locking device of a vehicle seat rail, and more particularly, to a locking device of a vehicle seat rail, in which a plurality of locking pins provided at an upper rail are inserted into locking holes formed at a lower rail and are caught, so that the upper rail is restricted at the lower rail, thereby fixing a seat to move forward and backward.
Background
A vehicle seat is an essential structure for supporting a load of a passenger during operation and maintaining a more comfortable and safe posture of the passenger.
The seat is arranged on the ground in the carriage, and is provided with a seat guide rail, and the front and back positions of the seat guide rail are adjusted according to the body conditions of passengers by taking the seat guide rail as a medium.
The seat rail structure includes: a lower rail fixed to the ground, and an upper rail slidably mounted on the lower rail and having a seat mounted thereon.
The upper rail is provided with a locking device including a plurality of locking pins for fixing the position of the upper rail which moves back and forth on the lower rail.
As shown in fig. 1, the seat rail locking apparatus is configured such that the lower end of a lock pin (1) guided by a guide hole (2a) of a lock block (2) in an up-and-down movement path is inserted into a lock hole (3a) provided in a lower rail (3) and is locked, thereby fixing the position of an upper rail (not shown) on the lower rail (3).
The lower end of the lock pin (1) is provided with a tapered part (1b) with an inclined outer peripheral surface in order to facilitate the insertion and separation into and from the lock hole (3a), and the upper part of the tapered part (1b) is provided with a transverse groove (1a) along the circumference.
As shown in the figure, the groove (1a) can cause the bending of the lock pin (1) when a collision accident occurs, the lower end part of one side of the groove (1a) is clamped on the locking guide block (2) when the lock pin (1) bends, so that the secondary strength (primary strength: strength in an unbent state) of the lock pin (1) is increased, and the seat is further firmly fixed when the accident occurs.
However, when the lock pin (1) is formed with the groove (1a) as described above, the groove (1a) is caught on the inner peripheral surface of the guide hole (2a) of the lock guide block (2) when the lock pin (1) is normally raised to release the locked state, so that the unlocking is not smooth, and the lock release lever is operated with a feeling of catching.
Disclosure of Invention
Technical problem
The invention aims to provide a locking device of a vehicle seat guide rail, which can increase the locking strength of a lock pin when an accident happens, can release smoothly when a locked state is released, and can not generate a locking feeling on the operation of an unlocking rod.
Technical scheme
In order to achieve the object, the present invention comprises: a lower guide rail fixed to a floor of the vehicle body and provided with a plurality of locking holes; an upper guide rail linearly moving along the lower guide rail; a locking guide block fixed on the upper guide rail and provided with a plurality of guide holes; and a plurality of locking pins which are provided on the upper guide rail, inserted into the guide holes, and whose lower portions are inserted into the locking holes of the upper guide rail according to height. And after the lower part of the lock pin is inserted into the lock hole of the upper guide rail, the corresponding part of the guide hole of the lock pin forms a sawtooth part.
The saw tooth portion forms a plurality of saw teeth along the circumference of the lock pin, and the saw teeth are formed in a straight line shape in the up-down direction.
The lower part of the sawtooth part of the lock pin is provided with a conical part with the diameter gradually reduced.
The lower part of the conical part of the lock pin is provided with a cylindrical small-diameter part with the diameter gradually reduced by the conical part.
The mounting bracket is assembled on the upper portion face of the upper portion guide rail, an unlocking rod is arranged at one side end portion of the mounting bracket in a rotatable mode, a lock pin supporting portion of the unlocking rod penetrates through the upper portion guide rail and enters the inside of the locking guide block, the lock pin is inserted into a pin hole of the lock pin supporting portion, a flange is formed on the lock pin, and when the lock pin supporting portion rises, the flange is clamped, and the lock pin rises.
The upper part of the lock pin protrudes upwards through the upper surface of the upper guide rail and the through hole of the mounting bracket, and a locking spring which always pushes the lock pin downwards is arranged between the mounting bracket and the flange.
Advantageous effects
According to the present invention as described above, there is an advantageous effect in that,
when the lock pin is locked, saw teeth are formed on the corresponding part of the guide hole of the lock guide block, so that saw tooth traces are printed on the inner circumferential surface of the guide hole when a collision accident occurs;
as described above, the serration trace is printed to absorb the impact, and the lock pin is prevented from being bent or damaged by the impact absorption, thereby stably maintaining the locked state. The contact area between the saw teeth of the lock pin and the saw teeth trace of the guide hole is increased, so that the friction force is increased, the lock pin is prevented from falling off, and the locking state is kept;
the saw teeth are formed in the up and down direction, the unlocking lever is normally operated, and when the locking state is released, no clamped part is arranged between the saw teeth forming part and the inner circumferential surface of the locking guide block, so that the saw teeth can be smoothly released, and the operation feeling can not be improved due to the clamping feeling when the unlocking lever is operated.
Drawings
Fig. 1 is a schematic view of a seat rail locking apparatus of the related art, which is a schematic view of a latch being bent when a collision occurs;
FIG. 2 is a structural view of a vehicle seat rail locking apparatus of the present invention;
FIG. 3 is an enlarged view of the key portion of the present invention, namely the locking pin;
fig. 4 is a schematic view showing a state in which saw-tooth marks are printed on an inner peripheral surface of a guide hole of a lock guide block corresponding to a saw-tooth portion of a lock pin in a collision accident in the seat rail locking apparatus according to the present invention.
Description of the symbols
10: an upper guide rail; 20: a lower guide rail;
21: a lock hole; 30: a lock guide block;
31: a guide hole; 40: a lock pin;
41: a pin body; 42: a large diameter portion;
43: a flange; 44: a serration;
45: a tapered portion; 46: a small diameter part;
50: a locking spring; 60: an unlocking lever;
70: and (5) mounting a bracket.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings in which embodiments of the invention are shown, but the described embodiments are only a part and not all of the embodiments of the invention. Based on the embodiments of the present invention, those skilled in the art may still modify the technical solutions described in the foregoing embodiments, or may equivalently replace some of the technical features in the foregoing embodiments; and such modifications and substitutions still fall within the technical scope of the present invention. For convenience of explanation, the thickness of the lines or the sizes of the components and the like illustrated in the drawings may be exaggerated.
The term to be described later is defined according to the function of the present invention, and may be different depending on the intention of the user or the operator or the habit. These terms should therefore be defined based on the overall contents in the present specification.
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Fig. 2 is a structural view of a vehicle seat rail lock device of the present invention, which includes: upper rail 10, lower rail 20, lock guide 30, lock pin 40, lock spring 50, unlock lever 60, mounting bracket 70.
The upper rail 10 and the lower rail 20 are linearly movable components with each other, the lower rail 20 is fixed to the floor in the vehicle compartment, and the upper rail 10 is equipped with a seat.
Thus, the front-rear position of the seat can be adjusted.
The locking guide blocks 30 are fixed to the inner side surface of the upper rail 10, and the lower horizontal portion is formed with the same number of guide holes 31 as the number of the locking pins 40. The locking pin 40 is inserted into the guide hole 31, and the guide hole 31 guides the locking pin 40 to move up and down.
A mounting bracket 70 is attached to the upper surface of the upper rail 10, and the lock release lever 60 is rotatably provided at one end portion of the mounting bracket 70 (located behind the upper rail 10 in fig. 2).
The lock pin support of the lock release lever 60 is penetrated through the upper rail 10 into the inside of the lock guide block 30, and the lock pin 40 is inserted into each pin hole of each lock pin support.
The upper end of the lock pin 40 passes through holes provided in the upper rail 10 and the mounting bracket 70, protrudes to the outside of the upper portion of the mounting bracket 70, and moves up and down freely.
The latch 40 is provided at its middle portion with a flange 43 (see fig. 3), and the locking spring 50 is provided between the flange 43 and the mounting bracket 70.
The lock spring 50 pushes the flange 43 to always apply a force to move the lock pin 40 downward.
Therefore, the lock pin 40 is located above the lock hole 21 of the lower rail 20, and the lock spring 50 is pushed downward and lowered, and then inserted into the lock hole 21 of the lower rail 20, so that the upper rail is locked to the lower rail 20.
At this time, the guide hole 31 of the locking guide 30 not only guides the locking pin 40 to move up and down but also supports the locking pin 40 laterally, so that the lower rail 20 and the upper rail 10 are firmly maintained by the laterally locked state of the locking pin 40.
The lock state described above is released by operating the lock release lever 60, and when the lock pin support portion of the lock release lever 60 is lifted to push up the flange 43, the lock pin 40 is lifted by compressing the lock spring 50, and is disengaged from the lock hole 21 of the lower rail 20.
In the lock pin 40, as shown in fig. 3, a large diameter portion 42 having a diameter expanded is formed at a lower portion of a cylindrical pin body 41, and the flange 43 is provided between the pin body 41 and the large diameter portion 42.
A serration 44 having serrations is provided on the outer peripheral surface of the cylindrical portion having a slightly smaller diameter at the lower portion of the large diameter portion 42. The serration portion is formed in a vertically straight shape over the entire periphery of the outer peripheral surface of the serration portion 44.
The lower portion of the serration 44 is formed with a tapered portion 45 whose diameter is gradually reduced, and the lower portion of the tapered portion 45 is formed with a cylindrical small diameter portion 46 which is to be held by the reduced diameter of the tapered portion 45.
In the lock pin 40 constructed as described above, the lock spring 40 is provided on the outer periphery of the lock body 41 in the assembled state.
The flange 43 functions as a force application surface to the lock spring 50 and the lock pin support portion of the lock release lever 60.
In the locked state in which the lock pin 40 is lowered, the tapered portion 45 corresponds to the lock hole 21 of the lower rail 20, and insertion and removal into and from the lock hole 21 are facilitated.
Also in the locked state where the lock pin 40 is lowered, the serration 44 is inserted into the guide hole 31 of the lock guide block 30.
On the other hand, when a collision accident occurs and a constant force acts on the seat during traveling of the vehicle, the upper rail 10 and the lower rail 20 fixed to the seat are relatively moved in opposite directions, and at this time, the lower portion of the lock pin 40 is caught by the lock hole 21 of the lower rail 20, and the lock guide 30 moves together with the upper rail 10, so that the lock guide 30 and the lock pin 40 are strongly collided with each other.
In the event of a collision accident, the seat, the upper rail 10 and the lower rail 30 move forward (in the direction of arrow F), and therefore the collision occurs between the vehicle rear portion of the inner peripheral surface of the guide hole 31 of the lock guide block 30 and the lock pin 40, and a serration 44' as shown in fig. 4 is printed on the rear side surface of the guide hole 31 by the collision.
The saw-tooth trace 44' is formed in the same manner as the saw-teeth of the saw-tooth portion 44, and thus is formed in a straight line up and down.
As described above, the serration 44' is formed on the inner circumferential surface of the guide hole 31 of the lock guide block 30, that is, the inner circumferential surface of the guide hole 31 is pressed and deformed by the serration 44 to absorb, i.e., buffer, the impact.
The lock pin 40 is also prevented from being deformed in the event of a collision by the cushioning effect.
Since the concave-convex surface of the serration 44 and the concave-convex surface of the serration trace 44' are in contact with each other, the contact area is increased, the frictional force is increased, the deformation (bending) of the striker 40 is prevented, and the striker 40 is not easily separated from the guide hole 31 at the moment of impact, and the position fixing state of the seat is maintained stably, compared to the case where the conventional striker 40 is in contact with the sliding surface of the guide hole 31.
Since the serration 44 is formed in a vertically linear shape, the serration 44 does not catch on the guide hole 31 when the lock pin 40 is lifted by operating the lock release lever 60 in a normal use state. As described above, the lock pin 40 does not catch when it is lifted, and the operational feeling of the lock release lever 60 is improved.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the embodiments shown in the drawings, those skilled in the art will understand that: modifications and equivalents of the foregoing embodiments may be made. The scope of the invention should therefore be construed in accordance with the substance defined by the following claims.
Claims (5)
1. A locking device of a seat rail for a vehicle, characterized by comprising:
a lower guide rail fixed to a floor of the vehicle body and provided with a plurality of locking holes;
an upper guide rail linearly moving along the lower guide rail;
a locking guide block fixed on the upper guide rail and provided with a plurality of guide holes;
a plurality of lock pins provided on the upper guide rail, inserted into the guide holes, and the lower portions of the lock pins are inserted into the lock holes of the lower guide rail according to the heights of the lock pins; and
when the lower part of the lock pin is inserted into the lock hole of the lower guide rail, the sawtooth part is arranged on the part of the lock pin corresponding to the guide hole,
the saw tooth portion forms a plurality of saw teeth along a circumference of each of the lock pins, the saw teeth being formed in a straight line in an up-down direction,
when the inner circumferential surface of the pilot hole is deformed by the collision of the serration under pressure, a serration trace having the same shape as the serration is formed on the inner circumferential surface of the pilot hole.
2. The locking device of a vehicle seat rail according to claim 1,
the lower part of the sawtooth part of the lock pin is provided with a conical part with the diameter gradually reduced.
3. The locking device of a vehicle seat rail according to claim 2,
the lower part of the conical part of the lock pin is provided with a cylindrical small diameter part with the diameter gradually reduced by the conical part.
4. The locking device of a vehicle seat rail according to claim 1,
the mounting bracket is assembled on the upper portion face of the upper portion guide rail, an unlocking rod is arranged at one side end portion of the mounting bracket in a rotatable mode, a lock pin supporting portion of the unlocking rod penetrates through the upper portion guide rail and enters the inside of the locking guide block, the lock pin is inserted into a pin hole of the lock pin supporting portion, a flange is formed on the lock pin, and when the lock pin supporting portion rises, the flange is clamped by the lock pin supporting portion and the lock pin rises.
5. The locking device of a vehicle seat rail according to claim 4,
the upper part of the lock pin protrudes upwards through the upper surface of the upper guide rail and the through hole of the mounting bracket, and a locking spring which always pushes the lock pin downwards is arranged between the mounting bracket and the flange.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020170125995A KR101908085B1 (en) | 2017-09-28 | 2017-09-28 | Locking device of seat rail for vehicle |
| KR10-2017-0125995 | 2017-09-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109572499A CN109572499A (en) | 2019-04-05 |
| CN109572499B true CN109572499B (en) | 2021-11-02 |
Family
ID=63865753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810316607.9A Active CN109572499B (en) | 2017-09-28 | 2018-04-10 | Locking device for vehicle seat rail |
Country Status (3)
| Country | Link |
|---|---|
| KR (1) | KR101908085B1 (en) |
| CN (1) | CN109572499B (en) |
| DE (1) | DE102018205936B4 (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20221777U1 (en) | 1970-05-12 | 2007-08-30 | C. Rob. Hammerstein Gmbh & Co. Kg | Locking device of a longitudinal adjusting unit of a vehicle seat has a plunger pin with a groove region located close to a lower end of an opening when the plunger pin is locked in the one of the locking openings |
| DE10057721B4 (en) * | 2000-11-15 | 2011-12-29 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Automotive seat |
| DE202005003626U1 (en) | 2005-03-02 | 2006-07-13 | Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg | Locking device for an adjustable vehicle seat |
| WO2007094012A2 (en) * | 2006-02-13 | 2007-08-23 | Ifb Automotive Private Ltd | Slider locking system |
| DE102007042595B4 (en) | 2007-09-07 | 2015-06-25 | Johnson Controls Gmbh | Adjusting device for longitudinal adjustment of a motor vehicle component |
| US8955813B2 (en) * | 2010-10-27 | 2015-02-17 | C. Rob. Hammerstein Gmbh & Co. Kg | Locking unit of a longitudinal adjustment device of a motor vehicle seat, comprising catch pins |
| CN103237680B (en) * | 2010-12-02 | 2015-12-02 | C.劳勃.汉默斯坦两合有限公司 | The blocking device of seat longitudinal adjusting device and the method and apparatus for the manufacture of blocking device |
| JP2016074369A (en) | 2014-10-08 | 2016-05-12 | Ｋｙｂ株式会社 | Impact absorption type steering shaft |
| DE202015005454U1 (en) | 2015-08-06 | 2015-11-24 | Faurecia Autositze Gmbh | Pair of rails for a longitudinally adjustable vehicle seat |
| KR101671644B1 (en) | 2015-08-25 | 2016-11-01 | 주식회사다스 | Locking device for seat rail |
-
2017
- 2017-09-28 KR KR1020170125995A patent/KR101908085B1/en active IP Right Grant
-
2018
- 2018-04-10 CN CN201810316607.9A patent/CN109572499B/en active Active
- 2018-04-18 DE DE102018205936.5A patent/DE102018205936B4/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| KR101908085B1 (en) | 2018-10-15 |
| DE102018205936A1 (en) | 2019-03-28 |
| CN109572499A (en) | 2019-04-05 |
| DE102018205936B4 (en) | 2023-10-05 |
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