JP2005088624A - Seat lock structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat lock structure capable of reducing the input load on a locking mechanism. <P>SOLUTION: In the seat lock structure for holding a seat cushion supported in an erectable manner from a supporting frame in a seated condition via a lock mechanism, an engagement hole 25a is formed in a bottom surface part of the seat cushion 2, and an engagement projection 5 to be engaged with the engagement hole 25a is provided on the supporting frame 4. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention relates to a seat lock structure for fixing a seat cushion that can be raised to a support frame to the support frame in a seated state, and more specifically, when an excessive load is applied to the seat cushion, The present invention relates to a seat lock structure that is securely fixed to a support frame.

  In vehicles such as automobiles, the storage of luggage is naturally limited due to the limited indoor space. Therefore, the seat cushion is pivotably mounted so that it can be raised with respect to the support frame, and the seat cushion is raised and raised as necessary, and the lower space of the seat cushion is used for storage. There is.

What is shown in FIGS. 15 to 17 is a prior art of a seat structure in which a storage container is disposed using a lower part of a passenger seat (see Patent Document 1 and Patent Document 3).
The seat structure of this prior art will be briefly described. The seat 100 includes a seat cushion 101, a seat back 102 provided at a rear end portion of the seat cushion 101 via a reclining mechanism (not shown), and the seat cushion. 101 and a support frame 103 that supports the seat back 102.
The seat cushion 101 is provided so as to be pivotable forward about the front end portion through a hinge mechanism 104 provided between the seat cushion 101 and the support frame 103, and is configured to be lifted.

A synthetic resin storage container 105 is detachably provided in the lower space portion of the seat cushion 101.
The seat cushion 101 is provided with a latch mechanism 106 on the rear surface of the rear end portion, and a striker 107 that locks the latch mechanism 106 is attached to the rear end portion of the support frame 103. The latch mechanism 106 is provided with a belt 108. By pulling the belt 108, the latch mechanism 106 is released.
Japanese Patent Laid-Open No. 7-47883 Japanese Patent Laid-Open No. 7-25275 JP-A-10-203206

  However, what is raised in the prior art is to prevent the seat cushion 101 from rattling, and in the event that an excessive load is applied to the seat cushion 101, the load is maintained by a latch mechanism. It was a structure. For this reason, the lock mechanism including the latch mechanism 106 and the striker 107 is increased in size and the weight is increased.

  An object of the present invention is to solve the above-mentioned problems and to provide a seat lock structure that can reduce an input load to the lock mechanism.

In order to solve the above problems, the present invention provides a seat lock structure in which a seat cushion supported so as to be raised with respect to a support frame is held in a seated state via a lock mechanism, and is engaged with a bottom surface portion of the seat cushion. A hole is formed, and an engagement protrusion that engages with the engagement hole is provided on the support frame.
Further, the present invention provides an engagement portion on the bottom surface portion of the seat cushion, a striker with which the engagement portion engages is provided on the support frame, and the engagement protrusion is provided on at least one side of the striker. An engagement hole with which the engagement protrusion is engaged is formed in the vicinity of the engagement portion.
Further, according to the present invention, the engaging projection is provided with an inclined portion that is inclined rearward of the vehicle body.
Still further, according to the present invention, an inclined surface is formed on at least one side surface of the engagement protrusion so that the thickness gradually decreases toward the tip.
Further, the present invention resides in that the cross-sectional shape of the engaging protrusion and the cross-sectional shape of the engaging hole are formed into a substantially square shape that engages with each other.

According to the present invention, the engagement hole is formed in the bottom surface portion of the seat cushion, and the engagement projection that engages with the engagement hole is provided on the support frame, so that the input load to the lock mechanism can be reduced.
In addition, an engagement portion is provided on the bottom surface portion of the seat cushion, a striker with which the engagement portion engages is provided on the support frame, and the engagement protrusion is provided on at least one side of the striker, Since the engaging hole to be engaged is formed in the vicinity of the engaging portion, the striker and the locking mechanism can be easily positioned.
Furthermore, since the engaging protrusion is provided with an inclined portion that is inclined rearward of the vehicle body, when the seat cushion receives a load, the engaging protrusion can reliably engage and transmit the load to the support frame.
Since the inclined surface is formed on at least one side surface of the engagement projection so that the thickness gradually decreases toward the tip, the seat cushion is positioned in the vehicle width direction. Can be prevented.
Since the cross-sectional shape of the engaging protrusion and the cross-sectional shape of the engaging hole are formed in a substantially square shape that engages with each other, it is possible to prevent rattling in the vehicle width direction and improve the rigidity.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 and 2, reference numeral 1 denotes a seat applied to a passenger seat of an automobile. The seat 1 includes a seat cushion 2, a seat back 3 provided at a rear end portion of the seat cushion 2 via a reclining mechanism (not shown), and a support frame 4 that supports the seat cushion 2 and the seat back 3. It consists of The seat cushion 2 is attached to the support frame 4 so as to be rotatable about a front end portion via a hinge mechanism 6 so that the seat cushion 2 can be pulled up to the front side. In the seated state, the seat cushion 2 and the support frame 4 are fixed to each other via a lock mechanism described later.

  As shown in FIGS. 3 and 4, the support frame 4 spans a pair of side frames 7, 7 configured in a quadrilateral shape, and between the upper front ends and the upper rear end portions of the side frames 7, 7. It is composed of a front pipe 8 and a rear pipe 9 that constitute an upper surface frame. A seat belt buckle 10 is attached to a side frame 7 on one side of the support frame 4.

A bracket 11 is welded to the lower portion of the support frame 4, and the seat 1 can be slid back and forth by attaching the bracket 11 to, for example, a slide rail 12 as shown in FIG. The slide rail 12 includes an upper rail 15 fixed to the bracket 11 via bolts 13 and nuts 14, a slidable support for the upper rail 15, and a bracket 17 provided on the floor 16. It is comprised with the lower rail 19 fixed via.
The bracket 18 is integrally formed with a bracket 18 b provided at the front of the lower rail 19 and a bracket 18 b provided at the rear of the lower rail 19, and a bracket 18 b on the rear indoor side of the lower rail 19. The bracket 18c is fixed to a tunnel (not shown).
The upper rail 15 and the lower rail 19 of the slide rail 12 are configured such that rail portions 15 a and 19 a having a U-shaped cross section are opposed to each other, and the upper side flange portion 15 b of the upper rail 15 is connected to the upper side flange portion 19 b of the lower rail 19. It is formed in a U-shaped cross section so as to be located on the lower side, and the lower side flange portion 19c of the lower rail 19 is formed in an inverted U shape in the cross section so as to be located on the upper side of the lower side flange portion 15c of the upper rail 15. doing.
A cover 20 is provided on the outer surface of the support frame 4, and a lever 21 of a reclining device is provided outside the cover 20.

A belt 22 for causing the seat cushion 2 is provided at the rear end portion of the seat cushion 2, and this belt 22 is for releasing a locking mechanism provided between the seat cushion 2 and the support frame 4. The locking mechanism includes a latch mechanism 23 as an engaging portion provided on the seat cushion 2 and a striker 26 provided on the support frame 4.
As shown in FIG. 6, the latch mechanism 23 is a projection in which the latch body 24 a is urged by a spring (not shown) built in the latch case 24, and a plate 25 that supports the latch case 24 is The seat cushion 2 is attached to a cushion panel 33 (described later) on the back of the seat cushion 2 by screws or the like (not shown).
A striker 26 with which the latch body 24a engages is mounted on the rear pipe 9 of the support frame 4 (see FIGS. 3 and 4). As shown in FIG. 7 and FIG. 8, the striker 26 is mounted between a pair of engaging protrusions 5 erected on the upper surface of the rear pipe 9 so as to face each other. The pair of protrusions 5 are formed with protrusions having a substantially rectangular cross section, and are formed on the inclined surfaces 5a so that the outer side surfaces thereof gradually become thinner toward the upper tip side (see FIG. 9). Further, the upper end portion 5b is formed to be inclined rearward (see FIG. 8). As shown in FIG. 10, the plate 25 of the latch mechanism 23 is formed with engagement holes 25a corresponding to the projections 5 at positions corresponding to the pair of projections 5, and the latch mechanism 23 is a striker. The protrusion 5 is configured to engage with the engagement hole 25a in a state of being engaged with the engagement hole 26a.
The latch mechanism 23 pulls the belt 22 so that the latch main body 24a operates against the spring and releases the engagement between the latch main body 24a and the striker 26.

Returning to FIG. 1, reference numeral 27 denotes a synthetic resin container that is detachably disposed in the lower space of the seat cushion 2.
The storage container 27 is a rectangular container provided with a flange portion 28 around it, and can be carried by a handle 29. The flange portion 28 of the storage container 27 is formed with flange portions 28b, 28a, and 28c that are curved outward at the upper end side portion and the front and rear portions. The flange portions 28b on both sides of the flange portions 28a, 28b, 28c are engaged with the upper end frame portions 7a of the side frames 7, 7 of the support frame 4, and the front flange portion 28a is connected to the front pipe 8. The storage container 27 is attached to the support frame 4 by engaging the rear flange portion 28 c with the rear pipe 9.
Both ends of a resin handle 29 are rotatably attached to the upper ends of the inner side surfaces of both sides of the storage container 27, and the handle 29 is formed to have a length that enters the inside of the storage container 27. Yes. Projections are formed inwardly on the front and rear inner surfaces of the storage container 27 around which the handle 29 rotates, and a receiving portion 30 for locking the handle 29 is provided on the upper surface of the projection. . Grooves 29 a are formed on the front and rear surfaces of the handle 29, and protrusions 31 that enter the grooves 29 a are formed on the upper surface of the receiving part 30.

As shown in FIGS. 11 and 12, stopper rubber 34 is attached to the seat cushion 2 as an elastic body by welding or the like on both lower surfaces of a cushion panel 33 disposed on the lower surface of the cushion 32.
The stopper rubber 34 is mounted on the lower surface of the cushion panel 33 of the seat cushion 2 corresponding to the flange portion 28b of the storage container 27 disposed on the upper end frame portion 7a of the support frame 4.
A reinforcing member 38 that reinforces the connecting portion with the lower frame portion 7b is attached to the rear end portion of the upper end frame portion 7a. The reinforcing member 38 has a lever 21 and a seat belt buckle 10 for the reclining device. Is attached.

  According to the seat lock structure configured as described above, when the storage container 27 is used, when the belt 22 of the seat cushion 2 is pulled, the latch main body 24a is pulled and the engagement with the striker 26 is released. Then, the belt 22 is further pulled to cause the seat cushion 2. Thus, the seat cushion 2 is pivoted about the rotation center of the hinge mechanism 6 and is caused to move forward.

  When the seat cushion 2 is raised, the upper surface of the storage container 27 is opened, and a baggage for shopping or the like can be stored in the storage container 27. The storage container 27 can be removed from the support frame 4 and carried by removing the handle 29 from the receiving portion 30 and pulling it up.

Next, when the seat cushion 2 is tilted, the latch body 24a of the latch mechanism 23 is engaged with the striker 26, and the seat cushion 2 is locked. At this time, the pair of protrusions 5 erected on the upper surface of the rear pipe 9 are engaged with the engagement holes 25a formed in the plate 25 of the latch mechanism 23, so that the seat cushion 2 is Position in the direction. Since the protruding portion 5 is formed on the slope 5a whose thickness gradually decreases with the outer side surface facing upward, it can be easily positioned even when the seat cushion 2 is displaced in the vehicle width direction. . Since the protrusion 5 and the engagement hole 25a are formed in a quadrangular cross section, rattling in the vehicle width direction can be prevented.
Thus, even when a load on the rear side of the vehicle body is applied to the seat cushion 2, the load is received by the pair of protrusions 5, so that the load applied to the latch mechanism 23 can be reduced. Moreover, since the protrusion part 5 is formed so that the upper end part 5b is inclined rearward, it does not come out of the engagement hole 25a.

  In addition, this invention is not limited only to the said embodiment, For example, in the said embodiment, a pair of projection part 5 is provided so that the striker 26 may be supported on the both sides of the striker 26. FIG. However, as shown in FIG. 13, the protruding portion of the protruding portion 5 can be provided only on one side of the striker 26. Further, as shown in FIG. 14, a pair of protrusions 5 can be provided separately from the striker 26. Further, by forming the engagement hole 25a into a hole having a quadrangular cross section that matches the protrusion 5, it is possible to prevent rattling in the vehicle width direction and the vehicle body front-rear direction. The engagement hole 25a may be formed by penetrating the plate 25 and the cushion panel 33, or a recess may be formed on the lower surface side of the cushion panel 33. Furthermore, although the projection part 5 was formed in the cross-sectional square shape, it does not necessarily need to be a square shape. In addition, the present invention can be appropriately modified and implemented without changing the gist of the present invention.

1 is a perspective view showing an embodiment of a seat lock structure according to the present invention. It is a side view of the state which removed the seat back and side cover of FIG. It is a perspective view which shows the support frame of the seat lock structure by this invention. It is a perspective view which shows the state which attached the slide rail to the support frame of FIG. It is the sectional view on the AA line of FIG. It is a perspective view which shows the latch of FIG. It is a partial expansion perspective view which shows the seat lock structure by this invention. It is a side view which shows the seat lock structure by this invention. It is a front view which shows the seat lock structure by this invention. It is the elements on larger scale which show the locked state of FIG. It is the elements on larger scale which show the elastic body attached to the cushion main body lower surface of FIG. It is a X direction arrow line view of FIG. It is a perspective view which shows the modification of the seat lock structure by this invention. It is a perspective view which shows the modification of the seat lock structure by this invention. It is a perspective view which shows the conventional vehicle seat. It is a perspective view which shows the state which took out the conventional storage container. It is a perspective view which shows the conventional seat lock structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat 2 Seat cushion 3 Seat back 4 Support frame 5 Protrusion 6 Hinge mechanism 7 Side frame 8 Front pipe 9 Rear pipe 10 Seat belt buckle 11 Bracket 12 Slide rail 15 Upper rail 16 Floor 19 Lower rail 22 Belt 23 Latch mechanism ( Lock mechanism)
26 striker (locking mechanism)
27 Storage container 28 Flange part 29 Handle 30 Receiving part 31 Projection part 32 Cushion 33 Cushion panel 34 Stopper rubber (elastic body)
35 Screw 36 Recess 37 Step

Claims (5)

In the seat lock structure in which the seat cushion supported so as to be raised relative to the support frame is held in a seated state via a lock mechanism, an engagement hole is formed in the bottom surface of the seat cushion, and the engagement hole is engaged with the engagement hole. A seat lock structure in which a mating engagement protrusion is provided on the support frame. An engagement portion is provided on the bottom surface of the seat cushion, a striker with which the engagement portion engages is provided on the support frame, and the engagement protrusion is provided on at least one side of the striker, and the engagement protrusion is engaged. The seat lock structure according to claim 1, wherein a mating engagement hole is formed in the vicinity of the engagement portion. The seat lock structure according to claim 1, wherein the engaging protrusion is provided with an inclined portion that is inclined rearward of the vehicle body. 4. The seat lock structure according to claim 1, wherein an inclined surface is formed on at least one side surface of the engagement protrusion so that the thickness gradually decreases toward the tip. 5. The seat lock structure according to any one of claims 1 to 4, wherein a cross-sectional shape of the engaging protrusion and a cross-sectional shape of the engaging hole are formed in a substantially square shape that engages with each other.

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