CN101249807A

CN101249807A - Sliding rail for automobile seat

Info

Publication number: CN101249807A
Application number: CNA2008100233877A
Authority: CN
Inventors: 邹耀忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-04-10
Filing date: 2008-04-10
Publication date: 2008-08-27

Abstract

The invention relates to a slide rail used in automobile seats belonging to the technical field of vehicle accessory, which comprises a lower guide rail, an upper guide rail glidingly matched with the lower guide rail through a rolling frame and a locking device, wherein, the upper guide rail consists of a pair of first folding partitions, the end of which is bended with an arc-shaped flanging, the upper surface of the arc-shaped flanging consists of a first raceway of a roller and the lower surface of the arc-shaped flanging consists of a first raceway of a rolling ball; the lower guide rail consists of a pair of second folding partitions, the upper part of the pair of folding partitions forms a pair of flanging, the end of the flanging is bended with locking hooks, a locking toothrow is arranged in the middle of the pair of locking hooks , the upper end part of the pair of second folding partitions consists of a second raceway of the rolling ball and the upper end part of the pair of second folding partitions consists of a second raceway of the roller; the rolling frame, the roller and rolling ball are positioned on a lower track; the locking device comprises a wrench, a spring sheet, a rotary shaft, a wrench spring and a connecting tube. The slide rail has the advantages that the use safety is guaranteed, the fine adjusting requirement of the rider to regulate the seat position to the front and the back is met, and the sliding of slide rail is steady; in addition, the slide rail has simple structure and low cost.

Description

A kind of sliding rail for vehicle seat

Technical field

The present invention relates to a kind of sliding rail for vehicle seat, be used for lengthwise position adjustment, and, belong to the vehicle body fittings technical field adjusted locking position to automotive seat.

Background technology

Industry is all known, as sliding rail for vehicle seat, mainly contain three big component set-ups, promptly a lower guideway, that is used for connecting with car floor is used for connecting with automotive seat and is assigned in upper rail and a blocking device that is used to lock upper rail on the lower guideway by pearl frame cunning, said structure is no lack of in patent documentation and is seen in, the applicant formerly also applies for having multinomial about sliding rail for vehicle seat, as disclosed license notification number CN200995637Y, CN200992156Y.Yet, make a general survey of the sliding rail for vehicle seat in the prior art, its blocking device all shows as monolateral locking, promptly offer and be used for the emissions groove that the tooth on the confession lockplate of blocking device stretches in any side of guide rail, representational example such as Chinese patent Granted publication CN1081560C, though this patented technology scheme has been eliminated the shortcoming of US4964608 and the disclosed scheme of DE3935359: when blocking device stressed when big, can prevent to lock tooth throws off from the notch of the fixed part of slide rail, but after power stopped, strained tooth can be deviate from from notch.In view of the above, CN1081560C improves blocking device, make the tooth of blocking device be parallel to direction of slip well, also therefore be parallel to notch in a row and extend, use the notch engagement (the 4th page of suitable several the 4th to the 5th row of specification sheets) that guarantees all teeth and fixed parts.Yet, make a general survey of the instruction of this patented technology scheme, according to the upper rail (patent claims moving-member) and the locking of lower guideway (patent claims fixed parts) being adopted equally the monolateral locking of blocking device in it, therefore, though can alleviate the danger that tooth is deviate from from the emissions groove mouth, and can not solve distortion problem behind the impulsive force that is particularly happened suddenly after stressed, therefore there is potential safety hazard.The applicant has also obtained private observed data to the locking reliability of the sliding rail for vehicle seat of present monolateral latch-up structure there from car production manufacturer, and test results is very disappointed.Along with the further raising of people to vehicle complete vehicle safety understanding, seat is much accounted of too with the safety of slide rail, therefore is necessary to be improved.

Again, the adjustment step pitch of present sliding rail for vehicle seat is big, is about 15～20mm, causes therefrom can't satisfy the driving staff and want the optimal comfort degree that reaches; Again, existing sliding rail for vehicle seat since roller the shortage reasonableness is set, lost efficacy easily in therefore stressed back, influence the mobile effect of upper rail so that can't move or the gap very big; And, the complex structure of present sliding rail for vehicle seat, cost is higher.

Summary of the invention

Top priority of the present invention be to provide a kind of lock firm, can solve torsional deflection problem behind the impulsive force that is particularly happened suddenly after stressed, safe in utilization and simple in structure, sliding rail for vehicle seat that cost is low.

Another task of the present invention is to provide a kind of can making to adjust step pitch and satisfy to the driving staff and want the sliding rail for vehicle seat of the optimal comfort degree that reaches.

An also task of the present invention is will provide a kind of roller, ball to be provided with and rationally use to guarantee that slide rail slides steadily the sliding rail for vehicle seat that the gap is little.

For finishing top priority, technical scheme provided by the present invention is: a kind of sliding rail for vehicle seat, comprise that a lower guideway, that is used for connecting with car floor is used for connecting with automotive seat and be assigned in upper rail and a blocking device that is used to lock upper rail on the lower guideway by pearl frame cunning, be characterized in: described upper rail constitutes a pair of first folding wall, the end of a pair of first folding wall has been bent into an arc flanging respectively, and the lower surface that the upper surface of arc flanging constitutes roller first raceway, arc flanging constitutes ball first raceway; Described lower guideway constitutes a pair of second folding wall, the top of a pair of second folding wall constitutes the flanging of a pair of level, the end of one conduplication side has been bent into locking towards arc flanging direction respectively and has colluded, locking is colluded with the arc flanging and is corresponded to each other, be equipped with the locking toothrow in the centre that pair of locking is colluded, and a pair of second the folding wall the bottom constitute ball second raceway, a pair of second the folding wall the upper end constitute roller second raceway; Described pearl frame is taken roller, ball and is placed on the lower railway, and makes roller between roller first raceway and roller second raceway, and ball is between ball first raceway and ball second raceway; Described blocking device comprises spanner, spring leaf, rotating shaft, spanner spring and connection pipe, the middle part of spanner by the rotating shaft hub setting on upper rail, the rearward end both sides of spanner are provided with and are used for locking the locked groove of joining mutually with described locking toothrow, the leading section of spanner and connection pipe connect, spring leaf is installed in the upper surface of spanner, its free end contacts with the inside face of upper rail, the spanner spring by a pair of location of an end collude hub setting in the rearward end of spanner and by the other end spacing collude with connection pipe on jump ring groove scarf.

For finishing another task, technical scheme provided by the present invention is: the step pitch between the described locking toothrow is 10～12mm.

For finishing an also task, technical scheme provided by the present invention is: described pearl frame has two pairs, is separately positioned on the front and back end of lower guideway both sides, on the top of each pearl frame roller is set, the bottom is provided with ball.

The present invention is equipped with a spacer in the middle of the leading section of described spanner, correspondingly, offer connecting bore in the open end end of described connection pipe, and the inserting by spacer and connecting bore realizes the connection between spanner and the connection pipe.

The quantity of locked groove of the present invention has six at least, and the slot pitch between the locked groove equates with the step pitch of locking toothrow.

The present invention offers respectively on the wall at a pair of first folding of described upper rail and is used for the position-limited trough that cooperates with the locked groove of spanner 31 rearward end both sides.

The present invention being provided with first defining flange between the bottom of a pair of arc flanging of described upper rail described lower guideway a pair of second the folding wall the bottom between be provided with second defining flange, first defining flange is corresponding with the position of second defining flange, with the cooperating of confined planes of the pearl frame left and right sides pearl is erected position-limiting action by first, second defining flange.

After the present invention adopts said structure, one of advantage that has, owing to collude in the pair of locking of lower guideway and to be equipped with the locking toothrow and to be provided with in the both sides of spanner rearward end and to be used for and to lock toothrow and lock the locked groove of joining mutually, the bind mode of this bilateral locking, can obtain desirable and the locking effect coupling mechanism force balance through facts have proved, the distortion of toothrow or locked groove, distortion can not occur locking, can guarantee safe in utilization; Two, because the tooth pitch of locking between the toothrow is provided with rationally, and step pitch only is 10～12mm, therefore can satisfy the driver and passenger seat position is done the fine setting requirement of forward and backward adjustment, use the comfort level that obtains the best; Three, owing to be provided with two pairs of pearl framves in the front and back end of lower guideway both sides, top at the pearl frame is provided with roller, the bottom is provided with ball, and make roller between roller first raceway and roller second raceway, and ball is between ball first raceway and ball second raceway, this structure can guarantee that slide rail slides steadily, and the gap is little; Four, integral structure is simple, cost is low.

Description of drawings:

Fig. 1 is one embodiment of the invention scheme drawing.

Fig. 2 is a cross-sectional view of the present invention.

Fig. 3 is the connection scheme drawing that is directed to the slide rail of an a pair of structure of the present invention that automotive seat were equipped with.

Among the figure: 1. upper rail, 11. first is rolled over mounting hole, 13. first fix screws, 14, spanner guide groove on walls, 111. arc flangings, 1111. rollers, first raceway, 1112. balls, first raceway, 1113. first defining flanges, 112. rotating shaft knock holees, 113. position-limited troughs, 12.; Lower guideway, 21. second folding walls, 211. flangings, 212. lockings collude, 2121. locking toothrows, 213. balls, second raceway, 214. rollers, second raceway, 215. second defining flanges, 22. times mounting holes, 23. second fix screws; Blocking device, 31. spanners, 311. locked grooves, 3111. locked groove end faces, 312. shaft holes, 313. knock holees, 32. spring leafs, 33. locking plates, 34. rotating shafts, 35. spanner springs, 351. location collude, 352. spacingly collude, 36. connection pipes, 361. connecting bores, 362. jump ring grooves; 4. pearl frame, 41. confined planes, 42. rollers, 43. balls.

The specific embodiment:

By the description of applicant, will help to understand the present invention more, and good effect of the present invention is embodied more, but embodiment should not be considered as the restriction to some extent to the present invention program embodiment.

See also Fig. 1 and in conjunction with Fig. 2, upper rail of the present invention 1 is formed by Mould Machining by metal sheet, and the centre of upper rail 1 constitutes the spanner guide groove 14 of a U-shaped, goes into for the appearance of the following spanner that will mention 31.The end of a pair of first folding wall 11 of upper rail 1 is that end position has been bent into one and is with paraboloidal arc flanging 111, and the upper surface of arc flanging 111 constitutes roller first raceway 1111, lower surface constitutes ball first raceway 1112.Offer position-limited trough 113 respectively on the nearly medium position of a pair of first folding wall 11 of upper rail 1, this position-limited trough 113 is to see through and make the cell wall of locked groove end face 3111 and the position-limited trough 113 incompatible intensity of guaranteeing locking that matches for the locked groove on the spanner 31 311.Front and back end and middle part in a pair of arc flanging 111 bottoms are respectively equipped with first defining flange 1113, and also offer the rotating shaft knock hole 112 that is used to install rotating shaft 34 on a pair of first folding wall 11.Upper rail 1 is connect by first fix screw 13 and automotive seat by the last mounting hole of offering on it 12.

Please continue to consult Fig. 1 and in conjunction with Fig. 2, lower guideway 2 of the present invention is formed by Mould Machining by metal sheet equally, lower guideway 2 constitutes a pair of second folding wall 21, the top of a pair of second folding wall 21 respectively is bent into the flanging 211 of level, constitute pair of locking and collude 212 and the end of a conduplication side 211 is end position and then bending, the locking collude 212 and arc flanging 111 between be discontiguous, maintain rational spacing, make both can realize good cooperation, colluding 212 centre in pair of locking and be equipped with locking toothrow 2121, is ball second raceway 213 and constitute arcwall face in the bottom of a pair of second folding wall 21, upper end at a pair of second folding wall 21 promptly constitutes roller second raceway 214 in a conduplication side 211 places.Simultaneously, front and back end and middle part in a pair of second folding wall 21 bottoms inwardly convex with second defining flange 215 respectively, second defining flange 215 is corresponding with the position of first defining flange 1113, by first, second defining

flange

1113,215 with the cooperating of confined planes 41 of pearl frame 4 left and right sides to 4 position-limiting actions of pearl frame.The step pitch of locking toothrow 2121 is preferably 10～12mm, is preferably 11mm.Lower guideway 2 is connect by second fix screw 23 and car floor by the following mounting hole of offering on it 22.

See also Fig. 1, Fig. 2, pearl frame 4 of the present invention has two pairs, be separately positioned on the front and back end of lower guideway 2 both sides, on the top of each pearl frame 4 one piece of roller 42, bottom are set two pieces of balls 43 are set, when mounted, roller 42 is placed in the cavity volume that is made of roller first raceway 1111 and roller second raceway 214, makes upper rail 1 with respect to slippage on the roller 42, and roller 42 is with respect to lower guideway 2 slippages; And ball 43 is placed in the cavity volume that is made of ball first raceway 1112 and ball second raceway 213, makes upper rail 1 with respect to ball 43 slippages, and ball 43 is with respect to lower guideway 2 slippages.The left and right sides face of roller stand 4 is a confined planes 41, the effect that slide rail contacts and reaches control seat range and prevent the slide rail slippage by second defining flange 215 that is provided with on first defining flange 1113 that is provided with on confined planes 41 and the upper rail 1 and the lower guideway 2.

Please continue to consult Fig. 1, Fig. 2, blocking device 3 of the present invention preferred but structure that be not limited to are: it comprises spanner 31, spring leaf 32, rotating shaft 34, spanner spring 35 and connection pipe 36.Wherein: be provided with in the rearward end both sides of spanner 31 and be used for locking the locked groove 311 of joining mutually with described locking toothrow 2121, the quantity of this locked groove 311 is not limit by diagram, but both sides are each three again at least, spacing between the locked groove 311 should be consistent with the step pitch of locking toothrow 2121, and match with the locking toothrow 2121 that is provided with on the lower guideway 2, the rear end, middle part of spanner 31 is provided with shaft hole 312, pass through for rotating shaft 34, spanner 31 and upper rail 1 is hinged, and specifically: the rotating shaft knock hole 112 of rotating shaft 34 behind the shaft hole 312 that passes on the spanner 31 and on the upper rail 1 articulates; Upper surface middle part at spanner 31 has a spring leaf 32 by the rivet rivet clasp, and the free end of spring leaf 32 contacts with the inside face at upper rail 1 top, realizes the return after spanner 31 is opened; In the middle of the leading section of spanner 31, be provided with a spacer 33, be used for connection pipe 36 open end ends on connecting bore 361 insertings of offering and realize the connection of connection pipe 36 and spanner 31; Also be provided with two knock holees 313 in the leading section both sides of spanner 31, collude 351 cooperations for two location that establish spanner spring 35 1 end ends, spanner spring 35 is fixed on the spanner 31, spanner spring 35 other ends spacing collude 352 with connection pipe 36 open end close end positions on the jump ring groove 362 offered scarf mutually.

See also Fig. 1, when upwards guiding and supporting connection pipe 36, drive spanner 31 leading sections upwards by connection pipe 36 and spanner 31 joining parts, spanner 31 is a swivel point with rotating shaft 34, spanner 31 rearward end force locked groove 311 and locking toothrow 2121 to be thrown off downwards, realization is to the adjusting of displacement before and after the automotive seat, after finishing, adjusting can decontrol connection pipe 36, tilted upward in the rear end of spanner 31, locked groove 311 enters into locking toothrow 2121, promptly finishes the adjustment to the forward and backward position of automotive seat.

See also Fig. 3, according to general knowledge, automotive seat need the slide rail of a pair of structure of the present invention shown in this figure, are connect by connection pipe 36 between the two.

In sum, sliding rail for vehicle seat disclosed by the invention has simple in structure, and is economical and practical; It is little that stroke is opened in operation; Closed height is low; Bilateral locking effect ideal, safe and reliable; Can satisfy the driver and passenger does forward and backward adjustment to seat position fine setting requirement; Simultaneously, also can satisfy sliding stability, the requirement that the gap is little.

Claims

1, a kind of sliding rail for vehicle seat, comprise that one is used for the lower guideway (2) that connects with car floor, one is used for the automotive seat connection and by the sliding upper rail (1) that is assigned on the lower guideway (2) of pearl frame (4), with a blocking device (3) that is used to lock upper rail (2), it is characterized in that described upper rail (1) constitutes a pair of first folding wall (11), the end of a pair of first folding wall (11) has been bent into an arc flanging (111) respectively, and the upper surface of arc flanging (111) constitutes roller first raceway (1111), the lower surface of arc flanging (111) constitutes ball first raceway (1112); Described lower guideway (2) constitutes a pair of second folding wall (21), the top of a pair of second folding wall (21) constitutes the flanging (211) of a pair of level, the end of one conduplication side (211) has been bent into locking towards arc flanging (111) direction respectively and has colluded (212), locking is colluded (212) and is corresponded to each other with arc flanging (111), the centre of colluding (212) in pair of locking is equipped with locking toothrow (2121), and constitutes ball second raceway (213) in the bottom of a pair of second folding wall (21), upper end at a pair of second folding wall (21) constitutes roller second raceway (214); Described pearl frame (4) is taken roller (42), ball (43) and is placed on the lower railway (2), and roller (42) is positioned between roller first raceway (1111) and roller second raceway (214), and ball (43) is positioned between ball first raceway (1112) and ball second raceway (213); Described blocking device (3) comprises spanner (31), spring leaf (32), rotating shaft (34), spanner spring (35), and connection pipe (36), the middle part of spanner (31) by rotating shaft (34) hub setting on upper rail (1), the rearward end both sides of spanner (31) are provided with and are used for locking the locked groove (311) of joining mutually with described locking toothrow (2121), the leading section of spanner (31) and connection pipe (36) connect, spring leaf (32) is installed in the upper surface of spanner (31), its free end contacts with the inside face of upper rail (1), and spanner spring (35) colludes (351) hub setting in the rearward end of spanner (31) by a pair of location of an end, and by spacing the colluding (352) of the other end and jump ring groove (362) scarf on the connection pipe (36).

2, sliding rail for vehicle seat according to claim 1 is characterized in that the step pitch between the described locking toothrow (2121) is 10～12mm.

3, sliding rail for vehicle seat according to claim 1 is characterized in that described pearl frame (4) has two pairs, is separately positioned on the front and back end of lower guideway (2) both sides, on the top of each pearl frame (4) roller (42) is set, the bottom is provided with ball (43).

4, sliding rail for vehicle seat according to claim 1, it is characterized in that in the middle of the leading section of described spanner (31), being equipped with a spacer (33), correspondingly, offer connecting bore (361) in the open end end of described connection pipe (36), the inserting by spacer (33) and connecting bore (361) realizes the connection between spanner (31) and the connection pipe (36).

5, sliding rail for vehicle seat according to claim 1 is characterized in that the quantity of described locked groove (311) has six at least, and the slot pitch between the locked groove (311) equates with the step pitch of locking toothrow (2121).

6, sliding rail for vehicle seat according to claim 1 is characterized in that offering respectively on a pair of first folding wall (11) of described upper rail (1) and is used for the position-limited trough (113) that cooperates with the locked groove (311) of spanner (31) rearward end both sides.

7, sliding rail for vehicle seat according to claim 1, it is characterized in that being provided with first defining flange (1113) between the bottom of a pair of arc flanging (111) of described upper rail (1) between the bottom of a pair of second folding wall (21) of described lower guideway (2), being provided with second defining flange (215), first defining flange (1113) is corresponding with the position of second defining flange (215), with the cooperating of confined planes (41) of pearl frame (4) left and right sides pearl frame (4) is played position-limiting action by first, second defining flange (1113,215).