JP3957046B2 - Sheet weight test jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, the body frame is attached to the seating portion and the backrest portion with the attached seat belt, and the side portions of the seat frame at the height position corresponding to the center of gravity of the seat are pulled with a predetermined load by a tensile testing machine. Thus, the present invention relates to a sheet weight test jig for performing a load test corresponding to the sheet weight.
[0002]
[Prior art]
When a load corresponding to the weight of a related seat, for example, 20 times the load corresponding to the weight of the related seat is applied to the position of the center of gravity, for example, as shown in FIG. In the case of the seat 1, the rear portion of the seat 1 c located on the side portion is limited in space by the wheel house 2, so that a test jig cannot be set on the seat frame side portion 4, or There is a problem that the jig interferes with the front body block 5 arranged in the seating portion due to the narrowing of the lateral width.
[0003]
[Problems to be solved by the invention]
Therefore, at the time of the test, a method of avoiding interference with the wheel house or the body block by partially cutting the wheel house is adopted.
[0004]
In view of these points, the present invention is described at the beginning of the versatile test that can be easily carried out while avoiding interference with the body block or the side body portion disposed on the seating portion. An object of the present invention is to provide a jig for testing a load of a sheet of the same kind.
[0005]
[Means for Solving the Problems]
In order to achieve this object, according to the present invention, the seats on both sides at the height position corresponding to the center of gravity of the seat in a state in which the body block is attached to the seating portion and the backrest portion by the attached seat belt. In the jig for the load test of the seat weight corresponding to the weight of the seat by pulling the side of the frame with a predetermined load, the gap between the body block (5, 6) above the seating portion (1a) A screw rod (10) which is arranged in the transverse direction of the seat and in which screw thread portions (10a) are formed in a wide range on both sides from the assumed shortest distance between the seat frame side portions (8), A pair of first pairs on both sides having an insertion hole (11a) inserted into the thread portion (10a) at one end, and in which the screw rod (10) is positioned in the vertical direction by the nuts (12) on both sides. Communicating Member (11) and the seat frame side (8) to the bolt provided for testing (7) inserted through the insertion hole (13a) a second coupling member on either side a pair with the one end portion (13) And an insertion hole (15a) inserted through the thread portion (10a), a wire (20) pulled by a tensile tester is connected, and vertical positioning is performed by nuts (16) on both sides. A pair of wire connecting members (15) on both sides, and having an engagement hole or a hook portion (11b) at the other end of the first connecting member (11), and the other end of the second connecting member And a hook portion (13b) movably connected to the hook portion (11b) of the first connecting member.
[0006]
The seat belt (25) is provided on the side of the seat frame (8) on both sides of the height position corresponding to the center of gravity of the seat (1c) to be tested with the body block (5, 6) attached thereto. The bolt (7) is inserted through the insertion hole (13a) of the second connecting member (13). Further, the insertion hole (11a) of the first connecting member (11) is formed in the thread portion (10a) of the screw rod (10) disposed in the gap between the seating portion (1a) and the body block (5, 6). The first and second connecting members (11, 13) are connected by being inserted and fixed with a nut (12). The wire connecting member (15) on both sides of the threaded portion (10a) inserted through the insertion hole (15a) is loaded to the center of gravity of the seat without the wire (20) interfering with the body block (5, 6). The screw rod (10) is positioned in the longitudinal direction and fixed with a nut (16). The test is performed by pulling the wires (20) on both sides with a testing machine and loading the bolts (7) on both sides via the first and second connecting members (11, 13). At that time, the first and second connecting members (11, 13) are connected in a freely movable state, thereby guaranteeing a predetermined load to the center of gravity position even if the seat frame is deformed by the load.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
A sheet self-load test jig according to an example of the embodiment of the present invention will be described with reference to FIGS. In FIG. 1, 19 is a versatile seat self-load test jig, which is, for example, on the side to be tested among the triple seats 1 to which the three-point seat belt 25 shown in FIG. 3 is attached. The seat 1c positioned is mounted on a jig mounting stud bolt 7 welded to the seat frame side portions 8 on both sides of the rear end portion of the seat frame base 9.
[0008]
This jig for testing the self-load of the seat has a threaded portion 10a formed in a wide outer range on each side from the assumed shortest separation distance of the side parts of the seat frame on both sides of the vehicle that may be the test object. A pair of couplings on both sides, each having a threaded rod 10 and an insertion hole 11a inserted into the threaded portion 10a at one end, and the nuts 12 on both sides are positioned in the vertical direction via the washer 12a. A shackle 11 as a member, a connecting plate 13 as a second connecting member on both sides having an insertion hole 13a inserted into a jig mounting bolt at one end and screwed with a nut 14, and a thread It has an insertion hole 15a to be inserted into the portion 10a, to which a wire 20 to be pulled by a tensile tester is connected, and at the longitudinal direction of the screw rod 10 with nuts 16 on both sides via washers 16a. And a both side pair of wire connecting member 15 Me-decided is carried out.
[0009]
The other end portion of the shackle 11 is provided with a hook portion 11b whose outlet is opened and closed by a spring-biased opening and closing member 11c. On the other hand, the other end portion of the connecting plate 13 is provided with an engagement hole 13b into which the hook portion 11 is engaged, and the inner diameter thereof is larger than the cross section of the engagement portion with a larger inner diameter of the hook portion 11b. Connect as possible. The bolt insertion hole 13a of the vertically long connecting plate 13 is formed as a long hole that is long in the vertical direction, that is, in the lateral width direction in its screwed state. The outermost positions of the screw thread portions 10a on both sides are set so that the wire 20 can be set to the side of the body block having an assumed vehicle width.
[0010]
The usage method and operation in the case of testing the above-described three rear seats using the sheet self-load test jig 19 configured as described above are as follows. FIG. 1 shows a frame structure of a seat 1c to be tested. A seat portion 1a is mounted on a seat frame base 9, and a backrest portion 1b is mounted on a frame portion 9a erected at the rear end. Installed. The remaining two trains are configured in the same manner. As shown in FIGS. 2 and 3, the seat belt 25 has its buckle attached to each seating portion 1a and the other two points attached to the body side.
[0011]
In the test, the seat back portion of the seat 1c is provided with a space portion 1d for the test, and the center of gravity position and height of the seat 1c coincide with the seat frame side portions 8 on both sides of the rear end portion of the seat frame base 9. The stud bolts 7 are welded respectively. The body block 5 is attached to each seating portion 1a, and the body block 6 is attached to the backrest portions 1b on both sides by seat belts 25, respectively. The screw rod 10 is arranged in the seat transverse direction in the gap between the body blocks 5 and 6 above the seating portion 1a and in front of the backrest portion 1b . The threaded portion 10a on both sides of the threaded rod is inserted with the insertion hole 11a of the shackle 11 and temporarily fixed with the nut 12, and the outer side thereof is inserted with the insertion hole 15a of the wire connecting member 15 and temporarily with the nut 16. Stop it.
[0012]
The stud bolts 7 on both sides of the seat frame side portion 8 are inserted through the insertion holes 13a of the connection plate 13 and fixed to the forward position by the nuts 14. At that time, when the insertion hole 13a is in the shape of a long hole, if the position of the stud bolt 7 is deviated from the height position of the center of gravity, the height position is adjusted along the long hole and screwed. Next, the hook portion 11 b of the shackle 11 is connected to the engaging hole 13 b of the connecting plate 13, and its vertical positioning is performed and the nut 14 is fixed. Further, when the pulling portion 22 in the middle position of the connecting rod 21 at the tip of the wire 20 is pulled with a predetermined load by a tensile testing machine, the wire connection is performed so that a normal load is applied to the center of gravity of the stud bolts 7 on both sides. The member 15 is positioned in the vertical direction and fixed with a nut 16.
[0013]
When a predetermined tensile load is applied to the pulling portion 22, a load is applied to the stud bolts 7 on both sides via the screw rod 10, the shackle 11 and the connecting plate 13. At that time, even if the frame of the seat 1c is deformed, the hook portion 11b of the shackle 11 positioned in the vertical direction is movably connected to the engagement hole 13b of the connection plate 13, so A load is applied to the position of the center of gravity from both sides of the screw rod 10 without being affected by deformation.
[0014]
The sheet self-load test jig of the present invention can also be used for testing a single vehicle seat. Moreover, it replaces with above-mentioned embodiment, An engagement hole and a hook part can be substituted by comprising a 1st connection member as a connection plate and a 2nd connection member as a shackle. Furthermore, in the test method described above, the traction portion 22 is configured to be slidable along the connecting rod 21 without accurately positioning the wire connecting member 15 in the vertical direction, and the center of gravity position is determined from the stud bolts 7 on both sides. It is also possible to position the traction part 22 so that a normal load is applied to the traction part 22.
[0015]
【The invention's effect】
According to the sheet self-load test jig according to the first aspect of the present invention, the position of the wire pulled by the tensile tester and the connecting member inside thereof can be arbitrarily set along the screw rod, so that the body block or the side Interference with the body part can be avoided. In addition, by pulling the bolts on the side of the seat frame through the first and second connecting members that are connected in a floating state, the center of gravity position can be properly loaded even if the seat frame is deformed during the test. It does not provide a reinforcing effect to the seat or belt anchor. It can be applied to sheets having various widths, and a normal load to the position of the center of gravity becomes easy.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of a sheet self-load test jig according to an embodiment of the present invention.
FIG. 2 is a side view of a test object and a sheet using the jig.
FIG. 3 is a plan view of the sheet.
FIG. 4 is a plan view illustrating a sheet structure to be tested by the jig.
[Explanation of symbols]
1c Seat 5, 6 Body block 7 Stud bolt 8 Seat frame side portion 10 Screw rod 11 Shackle 13 Connection plate 15 Wire connection member 19 Sheet self-load test jig 20 Wire 25 Seat belt

Claims (1)

With the body block attached to the seat and backrest using the attached seat belt, the seat frame side part on both sides at the height position corresponding to the center of gravity of the seat is pulled with a predetermined load to support the seat's own weight. In the jig for sheet weight test for performing the load test,
A screw rod that is arranged in the seat transverse direction in the clearance with the body block above the seating portion, and in which a thread portion is formed in a wide range on each side from the assumed shortest distance between the side portions of the seat frame; A pair of first connecting members on both sides having an insertion hole inserted into the thread portion at one end, and the screw rod is positioned in the vertical direction with nuts on both sides, and on the side of the seat frame A pair of second connecting members on both ends having an insertion hole inserted into a bolt provided for testing at one end, an insertion hole inserted into the thread portion, and pulled by a tensile tester A wire connecting member, and a pair of wire connecting members on both sides in which the longitudinal positioning is performed with nuts on both sides,
A hook portion or a hook portion having an engagement hole or a hook portion at the other end portion of the first connection member, and movably connected to the engagement hole at the other end portion of the second connection member. A jig for testing a load on a sheet by itself, comprising an engaging hole that is movably connected to the hook portion of one connecting member.

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