JP2016145025A - Seat slide device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat slide device equipped with an operation lever holding structure having excellent installation performance.SOLUTION: A lever spring 61 is used for a seat slide device, which has a shape generally double-folding a wire material, and equipped with a pair of spring side fixing portions 62 set at both end portions of the wire material, and capable of fitting with spring fixing portions 25 provided on an upper side wall 21b; energizing arm portions 64 having elasticity and extended from the spring side fixing portions 62 at one end sides; and an abutting support portion 63 set at a double-folded part of the wire material, coupling the other end sides of the energizing arm portions 64, and abutting on an operation lever 51.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a seat slide device that can move a seat in the front-rear direction according to the physique of a seated person and fix the seat at a position desired by the seated person.

  As this type of seat slide device, there is one disclosed in Patent Document 1. As shown in FIG. 17, the seat slide device 101 includes a lower rail 110 installed on the vehicle floor along the vehicle front-rear direction, and an upper rail 120 fixed to the seat cushion so as to be movable in the lower rail 110. And a lock mechanism 140 for fixing the upper rail 120 at an arbitrary position on the lower rail 110.

  The lock mechanism 140 operates the operation lever 151 disposed on the upper rail 120 upward, so that the lock plate 143 configured integrally with the lock lever 141 is separated from the slit 113 of the lower rail 110 and the lock is released. Thus, the upper rail 120 is configured to be movable on the lower rail 110. Further, the lock mechanism 140 is configured such that the operation lever 151 swings downward so that the lock plate 143 is fitted and locked in the slit 113, and the upper rail 120 is fixed on the lower rail 110. Yes. The operation lever 151 is urged and held on the lock side by the holding spring 160 so that the lock plate 143 is held in the slit 113 in the locked state.

  The holding spring 160 is made of a linear spring material folded in half, and includes a coil portion 167 wound in a coil shape. A support pin 175 is inserted into the coil portion 167 of the holding spring 160 and is supported in the upper rail 120 by the support pin 175 together with the lock lever 141. Further, the folding spring 163 of the holding spring 160 abuts against the surface of the operation lever 151 on the lower rail 110 side, and biases the operation lever 151 toward the inner surface of the lock lever 141.

JP 2013-018400 A

  By the way, in the technique described in Patent Document 1, when the seat slide device 101 is assembled, a process of fixing the holding spring 160 and the lock lever 141 to the upper rail 120 with the support pins 175 is necessary. There is a problem that the adjunct is bad.

  Accordingly, an object of the present invention is to provide a seat slide device including an operation lever holding structure excellent in assembling performance in consideration of the above circumstances.

  The first aspect of the present invention is a lower rail extending along the longitudinal direction of the vehicle, and a rectangular shape extending in the longitudinal direction of the vehicle. The lower rail extends in the longitudinal direction of the lower rail. And an upper rail that has a U-shaped cross-section and is fixed to the lower surface of the upper ceiling wall, and an upper side wall that hangs downward from both edges in the vehicle width direction of the upper ceiling wall. A lock member that is detachably displaceable in a lock groove formed in the lower rail and is biased in a direction to engage with the lock groove, and is inserted between the upper side walls from the front end side of the upper rail. The operation lever whose end is engaged with the lock member, and the lever operation portion side of the operation lever are urged upward, and the operation lever is held in contact with the fulcrum contact portion arranged on the upper rail side. The lever spring has a shape obtained by substantially folding the linear member in half, and a pair of springs that are set at both ends of the linear member and can be fitted to a spring fixing portion provided on the upper side wall. A side fixing portion, elastic, and one end side of which is set to a bifurcated portion of the wire rod, and the other end of the biasing arm portion. And a contact support portion that contacts the operation lever.

  According to a second aspect of the present invention, in the seat slide device 1 according to the first aspect, the operation lever is disposed between the urging arm portions.

  According to a third aspect of the present invention, in the seat slide device 1 according to the first or second aspect, the operation lever includes a spring receiving portion engageable with the contact support portion on a lower surface thereof. It is a feature.

  According to a fourth aspect of the present invention, in the seat slide device 1 according to the third aspect of the present invention, the length of the urging arm portion is such that a part of the abutting support portion and the urging arm portion is from a front end portion of the upper rail. It is set so that it may protrude in a U shape.

  According to a fifth aspect of the present invention, in the seat slide device 1 according to any one of the first to fourth aspects, the spring-side fixing portion includes a protrusion protruding in the vehicle width direction, and the spring fixing portion is The spring-side fixing portion that opens at a position above the lower rail of the upper side wall is formed by a hole that can be fitted.

  According to a sixth aspect of the present invention, in the seat slide device according to the fifth aspect, the hole constituting the spring fixing portion is formed at an upper end of the upper side wall.

  In the first aspect of the invention, when the lever spring is assembled to the upper rail, the biasing arm portion of the lever spring is bent inward so that the spring side fixing portion is slidably contacted with the inner surface of the upper side wall of the upper rail, and the spring side fixing is performed. The part can be assembled simply by engaging the spring fixing part. Also, when removing the lever spring, the lever spring can be easily exchanged because it can be removed simply by bending the urging arm portion inside the upper rail. Thereby, assembly property improves.

  In the invention according to claim 2, the urging arm portion is disposed on the inner side of the upper rail so that the spring side fixing portion is detached from the spring fixing portion by disposing the operating lever between the urging arm portions without any gap. When trying to bend, the operating lever cannot get in the way. As a result, it is possible to prevent the lever spring from dropping without newly providing a drop-off preventing means.

  In the invention of claim 3, when the operation lever is assembled, the assembly is completed only by engaging the contact support portion with the spring receiving portion. As a result, the assembling property is improved, and the movement (dropout) of the operation lever in the axial direction can be regulated and prevented without newly providing a dropout prevention means.

  In a fourth aspect of the invention, the contact support portion and a part of the urging arm portion protrude in a U shape from the front end portion of the upper rail, so that the operation lever can be easily attached and detached.

  In the invention of claim 5, the upper rail can be moved without being influenced by the assembly of the lever spring by setting the spring fixing portion above the lower rail.

  In the invention of claim 6, the stability of holding the lever spring by the spring fixing portion can be enhanced by forming the spring fixing portion at the upper end of the upper side wall.

1 is an exploded perspective view showing a first embodiment of the present invention. The lever spring of this embodiment is shown, (a) is a top view, (b) is a side view. FIG. 6 is a cross-sectional view taken along line III-III in FIG. 5 showing the assembly. FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 3. It is a top view which shows the locked state of this embodiment. It is sectional drawing along the III-III line of FIG. It is sectional drawing along the VII-VII line of FIG. FIG. 6 is a cross-sectional view taken along line III-III in FIG. 5, showing the unlocked state of the present embodiment. It is sectional drawing along the IX-IX line of FIG. FIG. 6 is a cross-sectional view taken along line III-III in FIG. 5, showing a state in which the operation lever of the present embodiment is rotated in the reverse direction. It is sectional drawing along the XI-XI line of FIG. The lever spring which comprises 2nd Embodiment is shown, (a) is a top view, (b) is a side view. The lever spring which comprises 3rd Embodiment is shown, (a) is a top view, (b) is a side view. It is a principal part expansion perspective view which shows 4th Embodiment of this invention. It is a top view which shows the lower rail which comprises 4th Embodiment, and an upper rail. It is sectional drawing along the XVI-XVI line of FIG. It is a disassembled perspective view which shows a prior art.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. As shown in FIGS. 1 to 11, the present embodiment is a manual seat slide device 1. In addition, the seat slide device 1 of the present embodiment is installed on the floor surface of the vehicle, and is installed on the lower rail 10 that extends along the vehicle front-rear direction and on the back surface of the seat seat (not shown). The upper rail 20 is mounted so as to be relatively movable in the lower rail 10 along the longitudinal direction of the lower rail 10, and the lower rail 10 and the upper rail are reduced in order to reduce the frictional resistance when the upper rail 20 relatively moves in the lower rail 10. Friction reducing means 30 disposed between the rail 20 and a lock mechanism 40 that fixes the upper rail 20 to a desired position in the lower rail 10 by an occupant. An assembly 1a in which the upper rail 20, the friction reducing means 30, and the lock mechanism 40 are incorporated into the lower rail 10 is disposed in parallel along the vehicle front-rear direction between the seat seat portion and the floor surface. These assemblies 1 a are linked by an operation lever 51.

  The lower rail 10 includes a lower bottom wall 11a having a rectangular plate shape extending in the longitudinal direction of the vehicle, a pair of lower outer walls 11b erected upward from both end edges in the vehicle width direction of the lower bottom wall 11a, and both A pair of lower upper walls 11c extending in parallel with the lower bottom wall 11a from the upper end edge of the lower outer wall 11b toward the respective lower outer walls 11b, and the lower bottom from the inner end edges of both lower upper walls 11c It consists of a pair of lower inner side walls (lower side walls) 11d that hang downwardly toward the wall 11a. In addition, the space | interval between the lower inner side walls 11d which oppose in parallel is set so that the upper rail 20 accommodated in the lower rail 10 can move.

  Moreover, the lower bottom wall 11a and each lower outer wall 11b are smoothly continuous by the lower lower circular arc part 11e comprised by a circular arc surface. Each lower outer wall 11b and each lower upper wall 11c are also smoothly continuous by a lower upper arc portion 11f formed by an arc surface. The lower bottom wall 11a is fixed on the floor surface of the vehicle via a female screw member (not shown) and a bolt (not shown) as a lower fixing portion when being fixed on the vehicle floor surface. The

  The upper rail 20 includes an upper top wall 21a having a rectangular plate shape extending in the longitudinal direction of the vehicle body, an upper side wall 21b that hangs downward from both edges in the vehicle width direction of the upper top wall 21a, and lower end edges of both upper side walls 21b. The upper lower inclined wall 21c erected obliquely upward from the outer sides of the upper lower inclined wall 21c and the upper upper inclined wall 21d erected obliquely upward from the upper edge of the upper lower inclined wall 21c toward the upper side wall 21b. It is comprised by the substantially U shape. Further, the upper ceiling wall 21a is fixed to the back side of the seat seat via a bolt (not shown) or the like as an upper fixing portion for fixing to the back side of the seat seat.

  In addition, the dimensions of each part of the upper rail 20 are set so that the upper lower inclined wall 21c and the upper upper inclined wall 21d are arranged so as to be movable in the lower rail 10 along the vehicle front-rear direction.

  The friction reducing means 30 supports a lower guide ball 31 made of a metal spherical body, an upper guide ball 32, and the lower guide ball 31 such that the lower guide ball 31 can roll between the lower lower arc portion 11e and the upper lower inclined wall 21c. However, the upper guide ball 32 is constituted by a retainer 33 that supports the upper upper arc portion 11f and the upper upper inclined wall 21d so as to be able to roll freely.

  In the friction reducing means 30 of this embodiment, the diameter of the lower guide ball 31 is set to be larger than the diameter of the upper guide ball 32. The retainer 33 supports a total of four lower guide balls 31 and two upper guide balls 32. The friction reducing means 30 is arranged at two places in the front and rear in the accommodating portion 12 surrounded by the lower outer wall 11b, the lower upper wall 11c, and the lower inner wall 11d, and a total of four places are arranged for one assembly 1a. Is done.

  The locking mechanism 40 opens at the lower edge of the lower inner side wall 11d, and is formed on the upper top wall 21a so as to be swingable in the vertical direction between the plurality of slits 13 serving as locking grooves formed in a comb shape and the upper side wall 21b. The lock member 41 is provided, an operation lever 51 that performs a swinging operation of the lock member 41, and a lever spring 61 that biases and holds the operation lever 51.

  The lock member 41 is made of a plate-like elastic material, and a lock-side fixing portion 42 for fixing to the upper rail 20 is formed on a plate surface on one end side. The lock member 41 includes a lock main body 43 for engaging with the lower rail 10 on the other end side. And between the lock side fixing | fixed part 42 and the lock main body 43, the lock spring part 44 which always provides urging | biasing force in the direction which engages the lock main body 43 with the lower rail 10 with an elastic force is set.

  The lock side fixing portion 42 has an attachment hole, and is fixed to the lock fixing hole 22 opened in the upper top wall 21 a of the upper rail 20 via the lock fixing pin 26. The lock main body 43 swings up and down around the lock-side fixing portion 42 due to elastic deformation of the lock spring portion 44.

  The lock main body 43 is provided with a plurality of fitting protrusions 45 on the plate thickness surface facing the upper side wall 21b so as to be engageable with the slit 13. That is, the plurality of fitting protrusions 45 project toward the lower inner wall 11 d of the lower rail 10 along the rocking surface of the lock member 41. When the lock main body 43 swings, the fitting protrusion 45 is fitted to and detached from the slit 13 together with the lock main body 43. The slit 13 has an arc shape along the rotation locus of the fitting protrusion 45. In addition, a long slot-like fitting long hole 23 slightly larger than the slit 13 is opened at a portion of the upper side wall 21b that overlaps the slit 13 of the lower inner side wall 11d. And the fitting protrusion 45 fits / removes the slit 13 while penetrating the fitting long hole 23.

  The lock main body 43 has a hemispherical slidable contact protrusion 46 protruding from the upper surface thereof. An operating side end 55 of an operation lever 51 described later is in sliding contact with the sliding contact protrusion 46. That is, the lock main body 43 includes a sliding contact protrusion 46 that protrudes toward the operation lever 51 at a portion where the operation lever 51 abuts.

  The lock spring 44 has elasticity since the lock member 41 is made of an elastic material. In addition, the lock spring portion 44 has a boundary portion with the lock side fixing portion 42 and a boundary portion with the lock main body 43 bent stepwise, and the lock side fixing portion 42, the lock main body 43, and the lock spring portion 44 are Are formed substantially parallel to each other. By bending the boundary portion between the lock spring portion 44 and the lock-side fixing portion 42, the lock spring portion 44 is separated from the upper top wall 21a, so that when the lock member 41 swings, the lock spring portion 44 abuts against the upper top wall 21a. Generation of hitting sound is suppressed. Further, an insertion hole 47 made of a long hole extending from the lock side fixing portion 42 toward the lock body 43 is provided at a bent portion of the boundary between the lock spring portion 44 and the lock body 43. From the lower side to the upper side of the insertion hole 47, the working side end 55 of the operation lever 51 is inserted.

  The fulcrum member 71 is disposed below the upper side wall 21b from the lock spring portion 44 of the lock member 41 and between the lock fixing hole 22 and the lock main body 43 in the vehicle front-rear direction. Further, the fulcrum member 71 has a lever fulcrum 72 projecting from the lower surface thereof, and a plurality of fulcrum side fixing portions 73 projecting from the plate thickness surface facing the upper side wall 21b toward the upper side wall 21b. The lever fulcrum 72 has a semi-cylindrical shape extending in the vehicle width direction and protrudes downward. The fulcrum side fixing portion 73 is a projection that fits into the fulcrum installation hole 24 that opens in the upper side wall 21b. When the fulcrum side fixing portion 73 is fitted into the fulcrum installation hole 24, the fulcrum member 71 is located between the upper side walls 21b. It is inserted in. The fulcrum member 71 is not in contact with the lock spring portion 44 even when the lock main body 43 of the lock member 41 is rotated to the unlocking position where the lock main body 43 is detached from the slit 13.

  The operation lever 51 is made of a pipe-shaped member, and a lever operation portion 52 disposed along the vehicle width direction, and a lever that extends in parallel from both ends of the lever operation portion 52 and is inserted into the upper rail 20. The arm portion 53 forms a substantially U shape.

  The lever arm portion 53 has a lever operation portion 52 side bent upward in a substantially L shape, and the lever operation portion 52 rises upward. The lever arm portion 53 has an L-shaped horizontal portion inserted between the upper side walls 21b, and each end portion on the distal end side is inserted into the insertion hole 47 of the lock member 41 as a working side end portion 55. It is inserted to a position facing the sliding contact projection 46.

  Further, the lever arm portion 53 includes a spring receiving portion 54 on the lower surface facing the lower bottom wall 11a in a portion on the front side (lever operation portion side) with respect to the fulcrum member 71. The spring receiving portion 54 is formed of a concave groove extending along the vehicle width direction. The spring support portion 54 is engaged with a contact support portion 63 of a lever spring 61 described later, and is urged upward by the contact support portion 63, so that the lever arm portion 53. The upper surface of the fulcrum is held in contact with the lever fulcrum 72 of the fulcrum member 71.

  The portion inserted between the upper side walls 21b of the lever arm portion 53 is a flat portion 53a having a substantially semicircular cross-section by crushing the pipe from the vertical direction. The distal end portion (working side end portion 55) of the flat portion 53a is further folded in two at the left and right portions to form a substantially rectangular cross section. Further, a fulcrum abutting portion 53b that abuts on the lever fulcrum 72 is set in the flat portion 53a. That is, the flat portion 53a is formed such that a portion disposed between the upper side wall 21b from the end of the upper rail 20 to the lever fulcrum 72 is crushed from the vertical direction and thinned in the vertical direction. .

  As shown in FIGS. 1 and 2, the lever spring 61 is configured in a shape in which a linear wire having a circular cross section having elasticity is substantially folded in half, and includes a spring-side fixing portion 62, a contact support portion 63, A biasing arm portion 64 and a lowering portion 65 are provided.

  A pair of spring-side fixing portions 62 is set at both ends of the wire rod, and the lever-side spring 61 is fixed by fitting into the spring fixing portion 25 that opens to the upper side wall 21b. The spring-side fixing portion 62 is curved in a substantially U shape toward the outer side of the double fold, and this U-shaped portion extends in a portion above the lower upper wall 11c of the lower rail 10 of the upper side wall 21b. It is inserted into a long hole-like spring fixing portion 25 that opens along the direction. In other words, the spring fixing portion 25 is formed on the upper side wall 21b and includes a hole into which the spring side fixing portion 62 can be fitted.

  The contact support portion 63 is set at a portion where the linear member is folded in half, engages with the spring receiving portion 54 of the operation lever 51, supports the operation lever 51 upwardly, and moves in the longitudinal direction. To regulate. The contact support portion 63 is formed in a straight line along the vehicle left-right direction, and the length dimension of the straight line portion is set to be larger than the diameter of the operation lever 51.

  The urging arm portion 64 has a spring-side fixing portion 62 extending on one end side thereof, an abutting support portion 63 extending on the other end side thereof, and is weaker than the urging force of the lock spring portion 44, and an operation lever. It is set to generate an elastic force that can support the weight of the. Further, the interval between the urging arm portions 64 is set to be narrower than the width dimension of the flat portion 53 a of the operation lever 51. The length of the urging arm portion 64 is set such that a part of the abutting support portion 63 and the urging arm portion 64 protrudes in a substantially U shape from the front end portion of the upper rail 20.

  A lowering portion 65 is set on the spring side fixing portion 62 side of the urging arm portion 64. The lowering portion 65 lowers the urging arm portion 64 from the upper top wall 21a side (upper side) of the upper rail 20 to the lower bottom wall 11a side (lower side) of the lower rail 10, and has a shape that is folded back into an arc shape. .

  Next, an assembly procedure of the seat slide device will be shown. First, the mounting hole of the lock side fixing portion 42 of the lock member 41 is overlapped with the lock fixing hole 22 of the upper rail 20, and the lock fixing pin 26 is passed through both the holes and swaged, whereby the lock member 41 is attached to the upper rail 20. To fix. Next, the fulcrum member 71 is inserted from the lower side of the upper rail 20 while expanding the distance between the upper side walls 21b, and the fulcrum side fixing portion 73 of the fulcrum member 71 is fitted into the fulcrum installation hole 24 opened in the upper side wall 21b. As a result, the fulcrum member 71 is disposed on the upper rail 20. Next, the biasing arm portion 64 of the lever spring 61 is bent to be inserted between the upper side walls 21b while narrowing the interval between the biasing arm portions 64, and the spring side fixing portion 62 is moved to the spring fixing portion 25 by the bending reaction force. The lever spring 61 is disposed on the upper rail 20 by being inserted.

  Then, the friction reducing means 30 is disposed in the lower rail 10. The upper rail 20 is inserted into the lower rail 10 from the front end side of the lower rail 10 until the fitting long hole 23 of the upper rail 20 and the slit 13 of the lower rail 10 overlap. Next, the operation lever 51 is inserted between the urging arm portions 64 in a state where the contact support portion 63 of the lever spring 61 is pressed down. Here, when the operating lever 51 is inserted, the working side end portion 55 is inserted into the insertion hole 47 upward from below while expanding the interval between the urging arm portions 64 of the lever spring 61 with the flat portion 53a. The working side end portion 55 is brought into contact with the sliding contact projection 46. At this time, the position of the operation lever 51 in the longitudinal direction is fixed by the contact support portion 63 engaging with the concave groove of the spring receiving portion 54. When the operation lever 51 is assembled, the operation lever 51 is swung upward to release the lock, the upper rail 20 is further inserted, and the upper rail 20 is moved to an arbitrary position. When the upper rail 20 has moved, the operation lever 51 is returned to the original state to bring it into a locked state, whereby the assembly is completed.

  In the above-described configuration, in the initial state assembled as the seat slide device 1, the operation lever 51 has the fulcrum abutting portion 53 b abutted and held from below to the lever fulcrum 72 by the urging force of the lever spring 61. Due to the urging force of the lock spring portion 44, the sliding contact protrusion 46 of the lock body 43 is held in contact with the working side end portion 55 from below to above. As a result, the state in which the fitting protrusion 45 of the lock main body 43 is fitted to the bottom portion of the slit 13 while passing through the fitting elongated hole 23 is maintained.

  When the occupant swings the lever operation portion 52 of the operation lever 51 upward from the initial position (normal operation), the operation lever 51 rotates about the lever fulcrum 72 and the working side end 55 is the lock body. 43 is pushed down. When the lock main body 43 is displaced downward, the fitting protrusion 45 is detached from the slit 13 and separated from the lower rail 10. As a result, the fitting and locking between the upper rail 20 and the lower rail 10 are released, and the upper rail 20 can be relatively moved on the lower rail 10.

  When the upper rail 20 is moved to a desired position of the occupant, when the swinging operation is stopped, the operation lever 51 is rotated about the lever fulcrum 72 by the urging force of the lock spring portion 44 and the lever spring 61, so that the initial position is reached. Return to. When the operation lever 51 returns to the initial position, the fitting protrusion 45 moves into the slit 13 and the upper rail 20 and the lower rail 10 are fitted and locked.

  If the lever operating portion 52 of the operating lever 51 swings downward from the initial position due to an erroneous operation such as an accidental depression of the lever operating portion 52 by the occupant, the lever operating portion 52 is centered on the sliding contact projection 46 of the lock main body 43. To turn. In this case, since the fitting protrusion 45 is kept in the position in the slit 13, the lock mechanism 40 is not broken and the locked state is kept.

  With the above configuration, when the lever spring 61 is assembled to the upper rail 20, the biasing arm portion 64 of the lever spring 61 is bent inward so that the spring-side fixing portion 62 is attached to the inner surface of the upper side wall 21 b of the upper rail 20. Assembling is performed simply by making the sliding contact and engaging the spring-side fixing portion 62 with the spring fixing portion 25. Further, when the lever spring 61 is removed, the lever spring 61 can be easily replaced because it can be removed simply by bending the biasing arm portion 64 to the inside of the upper rail 20. Thereby, assembly property improves.

  Since the operation lever 51 is disposed without a gap between the two biasing arm portions 64, the biasing arm portion 64 is bent inward of the upper rail 20 so that the spring-side fixing portion 62 is detached from the spring fixing portion 25. At that time, the operation lever 51 cannot bend and bend. Thereby, it is possible to prevent the lever spring 61 from falling off without newly providing a dropping prevention means.

  When the operation lever 51 is assembled, the assembly is completed simply by engaging the contact support portion 63 with the spring receiving portion 54. As a result, the assembling property is improved, and the movement (dropout) of the operation lever in the axial direction can be regulated and prevented without newly providing a dropout prevention means.

  A part of the contact support portion 63 and the urging arm portion 64 protrudes in a substantially U shape from the front end portion of the upper rail 20, so that the operation lever 51 can be easily attached and detached.

  By setting the spring fixing portion 25 above the lower rail 10, the upper rail 20 can be moved without being affected by the assembly of the lever spring 61.

  Next, 2nd Embodiment of this invention is described based on drawing. A significant difference from the first embodiment is the shape of the lever spring 61A.

  As shown in FIG. 12, the lever spring 61A of the present embodiment has a shape in which the descending portion 65A is folded back into a rectangular shape instead of an arc shape.

  In addition to the operational effects obtained in the first embodiment, the space required for arranging the lever spring 61A can be reduced.

  Next, 3rd Embodiment of this invention is described based on drawing. Similar to the second embodiment, the shape of the lever spring 61B is greatly different from the first embodiment.

  As shown in FIG. 13, the lever spring 61B of this embodiment is formed by bending it into a crank shape.

  In addition to the operational effects obtained in the first embodiment, the attachment position of the lever spring 61B to the upper rail 20 can be easily changed.

  Next, 4th Embodiment of this invention is described based on drawing. A significant difference from the first embodiment is the position of the hole constituting the spring fixing portion 25A. As the position of the spring fixing portion 25A is changed, the shapes of the lock member 41A, the lever spring 61C, and the like are slightly different from those in the first embodiment.

  The holes constituting the spring fixing portion 25A of the present embodiment are formed at the upper end of the upper side wall 21b as shown in FIGS. More specifically, the spring fixing portion 25A is formed at a corner (bent portion) between the upper ceiling wall 21a and the upper side wall 21b. Further, a lever fulcrum 72 is integrally provided on the lock spring portion 44 of the lock member 41A.

  In addition to the operational effects obtained in the first embodiment, the lever spring 61C is held between the lower edge surface of the spring fixing portion 25A and the lower surface of the upper ceiling wall 21a. Can be fixed stably.

DESCRIPTION OF SYMBOLS 1 ... Seat slide apparatus 10 ... Lower rail 20 ... Upper rail 21a ... Upper ceiling wall 21b ... Upper side wall 25 ... Spring fixing part 41 ... Lock member 42 ... Lock side fixing part (mounting hole)
DESCRIPTION OF SYMBOLS 51 ... Operation lever 53b ... Supporting point contact part 54 ... Spring receiving part 61 ... Lever spring 62 ... Spring side fixing part 63 ... Contact support part 64 ... Energizing arm part

Claims (6)

A lower rail extending along the longitudinal direction of the vehicle,
An upper ceiling wall having a rectangular shape extending in the longitudinal direction of the vehicle is assembled so as to be relatively movable along the length direction of the lower rail, and from both ends of the upper ceiling wall in the vehicle width direction. An upper rail having a U-shaped cross-section downward with an upper side wall depending downwardly;
A lock member fixed to the lower surface of the upper ceiling wall, displaceably displaceable in a lock groove formed in the lower rail, and biased in a direction to engage with the lock groove;
An operating lever that is inserted between the upper side walls from the front end side of the upper rail and whose end engages with the lock member;
A lever spring that urges the lever operating portion side of the operating lever upward and holds the operating lever in contact with the fulcrum abutting portion disposed on the upper rail side;
The lever spring has a shape in which the wire rod is folded in half,
A pair of spring ends fixed to both ends of the wire rod, which can be fitted to a spring fixing portion provided on the upper side wall,
A biasing arm portion having elasticity and having one end side extended from the spring side fixing portion;
A seat slide device comprising: a contact support portion which is set to a half-folded portion of the linear member, connects the other end side of the urging arm portion and contacts the operation lever. The seat slide device according to claim 1,
The seat slide device, wherein the operation lever is disposed between the urging arm portions. In the seat slide device according to claim 1 or claim 2,
The operating lever includes a spring receiving portion that is engageable with the contact support portion on a lower surface thereof. The seat slide device according to claim 3,
The length dimension of the urging arm portion is set so that a part of the abutting support portion and the urging arm portion protrudes in a U shape from the front end portion of the upper rail. apparatus. In the seat slide device according to any one of claims 1 to 4,
The spring side fixing portion is composed of a protrusion protruding in the vehicle width direction,
The seat slide device according to claim 1, wherein the spring fixing portion includes a hole into which the spring side fixing portion opened at a position above the lower rail of the upper side wall can be fitted. The seat slide device according to claim 5,
The seat slide device according to claim 1, wherein the hole constituting the spring fixing portion is formed at an upper end of the upper side wall.

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