JPH051347U - Frame structure of removable seat with seat belt - Google Patents

Abstract

(57) [Abstract] [Purpose] An anchor for a seat belt is provided on a seat cushion frame, and the seat cushion is installed on the vehicle floor so that the seat cushion can be tilted forward. Make sure that the seat cushion is in proper condition, and that the seat cushion does not come off the vehicle floor when the impact load from the seat belt is applied. [Structure] The portion of the seat cushion frame where the latch is attached has a truss structure consisting of a bent portion of the after member and the main member and a bracket.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a frame structure of a seat cushion in a vehicle seat which has a seat belt anchor and is detachably attached to a vehicle floor.

[0002]

[Prior Art]

 Second and third seats in conventional automobile seats include those shown in FIGS. This is because the seat cushion (SC) can be detached from the vehicle floor (F), and the anchors of the seat belt (B) ... are fixed to the rear part of the seat cushion (SC), and the rear part of the seat cushion (SC) and this seat Rotate the seat back (SB), which is tilted forward on the cushion (SC), forwardly around the front part of the seat cushion (SC) to make it upright (tumble state), and mount the seat cushion (SC). We are trying to make effective use of the vehicle floor (F) placed. 5 and 6, (104) is a rear latch fixed to the rear portion of the seat cushion (SC), and the rear latch (104) is detachably attached to the rear striker (5) fixed to the vehicle floor (F). Engaged. In the figure, (61) is a front latch fixed to the front bottom surface of the seat cushion (SC), and this front latch (61) is detachably engaged with the front striker (7) fixed to the vehicle floor, The rear portion of the seat cushion (SC) pivots in a tumble state (arrow direction in FIG. 6) around the engaging portion of the front latch (61) with respect to the front striker (7). The front and rear latches (104) (61) are attached to the brackets (103) (6) fixed to the main member (101) that constitutes the frame of the seat cushion (SC).

FIG. 7 shows a frame structure of the above seat cushion (SC). In FIG. 7, (101) is a main member formed by bending a metal pipe into a substantially U shape, and the free end of this main member (101) is located at the end of the after member (102) having a U-shaped cross section. A bracket (103) for attaching the rear latch (104) is welded to the outer surface of the welded portion of the after member (102) and the main member (101).

The seat belt anchors are attached to the left and right of the after-member (102). When a seat belt load is input to the anchor, such as during a car collision, loads in the arrow direction are applied to the after-member (102), the left and right brackets (103) (103), and the main member (101). That is, assuming that the input by the seat belt load is (W ₁ ) (W ₂ ) (W ₃ ) (W ₄ ), the after-member (10 2) is in the rising direction, and the left and right brackets (103) (103) are Loads are respectively applied to the main member (102) inclining inward, the latch (104) rotating forward, and the main member (102) rotating forward and downward. In FIG. 7, (8) in the figure shows a reinforcing rod, and (51) and (71) show fixing brackets for fixing the strikers (5) and (7) to the vehicle floor (F).

[0005]

[Problems to be solved by the device]

 FIG. 8 shows the frame structure deformed by the seat belt load described above. The after member (102) for fixing the seat belt anchor is deformed into a highly curved shape at the central portion thereof, and the after member (102) is The lower part of each of the integral bracket (103) and the latch (104) is twisted inwardly. Therefore, the latches (104) (104) engaged with the striker (5) (5) fixed to the vehicle floor (F) escape from the striker (5) (5) and the rear part of the seat cushion (SC) is removed. There is a risk of turning upward. In FIG. 8, (13) ... In the figure shows the anchor attachment portion of the seat belt.

In order to eliminate such inconveniences, the above-mentioned conventional products use after-members (102), main members (101), brackets (103) (103), latches (104) (104), etc. which constitute a frame structure. In order to withstand the seat belt load, a reinforcement material and a thick metal material are used. Therefore, the weight of the seat cushion becomes large, and it is difficult to tumble and remove the seat cushion. It is therefore an object of the present invention to be lightweight and to prevent the latch from coming off the striker on the vehicle floor due to the seat belt load.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides inwardly bent portions on both free end sides of the main member, and the front end surface of the bent portion is located at the end of the frontal after-member. On the other hand, the bracket is welded inward, and the bracket is installed so as to extend across the end portion of the after member and the bent portion of the main member.

[0008]

[Action]

 The part of the seat cushion frame where the latch is attached is the bent part of the main member, the end side of the after member, and the truss structure by the bracket, and it does not deform due to the seat belt load. Hold at a right angle to.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 shows a seat cushion frame according to the present invention. In the figure, (1) is an after member, (2) is a main member, (3) and (3) are brackets for latch installation, and (4) is The latches are shown respectively. The after-member (1) is composed of a pipe material (11) made of a metal pipe, and a channel material (12) which holds the pipe material (11) at an upper portion and has an opening portion at an upper portion. The tube material (12) is integrally welded, and the end portion (111) of the pipe material (11) projects from the end portion of the channel material (12) as shown in FIGS. Has been done.

The main member (2) has a bent portion (21) formed by bending a metal pipe into a substantially U shape, and at both free ends of the main member (2) are bent inward in a substantially C shape. (21) is provided, and the front end surface (21a) of each bent portion (21) (21) is welded to the channel member (12) of the after-member (2). As shown in FIG. 3, this welding point is located at a lower position with respect to the pipe material (11), and the forward rotational load applied to the pipe material (11) is transmitted to the main member (2) side to allow the main member (2) to move. It is connected so that it can bear the load effectively.

The brackets (3) and (3) have their front sides welded to the bent portions (21) of the main member (2) and their rear sides attached to the ends (111) of the after members (1). The bracket (3) is provided with a latch (4). Therefore, the bracket (3), the bent portion (21) of the main member (2), and the after member (1) form a truss structure as shown in FIG. In FIG. 1, the same reference numerals as those in FIG. 7 indicate the same members, and the description thereof will be omitted.

2 and 3 show an essential part of the present invention. The bracket (3) includes a mounting piece (31) to be welded to the bent portion (21) of the main member (2) and the mounting piece (31). It is composed of two sandwiching pieces (32) and (33) which are welded to the inner side of (31), and the inner diameter which is substantially the same as the outer diameter of the main member (2) is provided on one side edge of the mounting piece (31). The joint portion (31a) is provided, and the joint portion (31a) is welded by fitting the bent portion (21). Then, the latch (4) is fastened to the outer surface of the mounting piece (31) by the bolt (42a). The side edges (32a) (33a) of the sandwiching pieces (32) (33) are fixed to the mounting piece (31) by welding, and the after-member (1) is provided between the sandwiching pieces (32) (33). ) End portion (111) is inserted, and this end portion (111) is axially rotatably attached to both clamping pieces (32) and (33) by bolts (34) and nuts (35) in a vertically rotatable manner. .. In the figure, (31a) and (31a) indicate the screw holes for attaching the reclining device in the bracket (3).

The above latch (4) includes a latch body (41) that engages with the striker (5) of the vehicle floor (F), and two support pieces (42) (42) that sandwich the latch body (41). It consists of and. Therefore, when the latch body (41) is disengaged from the striker (5) by operating the operation member, the rear portion of the seat cushion (SC) is removed from the vehicle floor (F).

FIG. 4 shows a state in which the frame is deformed by the load of the seat belt, and the after member (1) and the main member (2) which form the frame are deformed as shown by the chain line in FIG. By this deformation, the engagement state of the latches (4) (4) with the strikers (5) (5) is maintained. That is, as shown in FIG. 1, the after-member (1), the main member (2), and the bracket (3) are input by the inputs (W ₁ ) (W ₂ ) (W ₃ ) (W ₄ ) by the seat belt load. (3) and the load in the direction of the arrow acts on the latch (4), and the after-member (1) and the main member (2) are deformed (buckled) by this load, but the ratch (4). (4), the brackets (3) and (3) retain the shape before the load is applied, and the latch (4) does not come off from the striker (5). In the figure, (13) and (13) are seat belt anchor attachment portions provided on the after-member (1). In FIG. 2, (201) or (202) indicates the buckling portion of the main member (2).

[0015]

【effect】

 In the present invention, since the latch for attaching the rear portion of the seat cushion to the vehicle floor is provided on the after member, the bent portion of the main member, and the truss by the bracket, the attachment position of the latch on the frame of the seat cushion is reinforced. Therefore, since such a portion does not deform in the twisting direction with respect to the latch when a load is applied to the seat belt, the latch does not come off from the striker on the vehicle floor side. Therefore, since it is not necessary to reinforce the components of the entire frame, the weight of the seat cushion can be reduced, and the tumble or detachment operation of the seat can be easily performed.

[Brief description of drawings]

FIG. 1 is a perspective view showing a frame of a seat cushion of the present invention.

FIG. 2 is a plan view showing a partial cross section of an essential part of the present invention.

FIG. 3 is an exploded perspective view of an essential part of the present invention.

FIG. 4 is a rear view of the frame of the present invention, which is deformed under the load of a seat belt.

FIG. 5 is a perspective view of a removable seat with a seat belt.

FIG. 6 is a side view of a removable seat with a seat belt.

FIG. 7 is a perspective view showing a frame of a conventional removable seat cushion.

FIG. 8 is a rear view showing a state in which the frame of FIG. 7 is deformed by a seat belt load.

[Explanation of symbols]

 1 After-member 2 Main member 3 Bracket 4 Latch 5 Striker 21 Bent part of main member

Continued Front Page (72) Inventor Taishi Yasui 3-2-12 Matsubara-cho, Akishima-shi, Tokyo Inside Tachi-S Co., Ltd.

Claims (1)

[Claims for utility model registration] It consists of a substantially linear after-member that provides an anchor for the seat belt, and a substantially U-shaped main member that secures both free ends to the after-member. In a frame of a removable seat cushion in which a mounting bracket is fixed, and a latch provided on the bracket is detachably engaged with a striker on the vehicle floor, each frame is bent inward toward both free ends of the main member. A bent portion is provided, and both end surfaces of the bent portion are welded inward to both ends of the after member, and the bracket extends between the end portion of the after member and the bent portion of the main member. A frame structure of a removable seat cushion with a seat belt, which is characterized by being installed.