JP2002181615A - Seat weight measuring device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat weight measuring device for easily connecting a load transmitting member and a seat rail. SOLUTION: This seat weight measuring device 90 has a base frame 121, and an arm member 123 held so as to be rotatable in the vertical direction by a pivot pin 131 to the base frame 121. The arm member 123 is attached with the load transmitting member 125 for transmitting a load from the seat rail 70 to the arm member 123 via a stopper pin for regulating the rotary range. The load transmitting member 125 is provided with an engaging piece 150 overhanging outside the base frame 121, and the seat rail 70 is provided with a projecting piece 71 overlapping with this engaging piece 150. These engaging piece 150 and projecting piece 71 are connected to connect the load transmitting member 125 and the seat rail 70.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat weight measuring device for measuring a seat weight including the weight of an occupant seated on a vehicle seat, and more particularly to a seat weight measuring device connected to a seat rail via a load transmitting member. The present invention relates to a seat weight measuring device for measuring the weight of a seat by a load applied from a seat rail via a transmission member.

[0002]

2. Description of the Related Art In recent years, in order to more effectively operate an occupant protection device such as a seat belt device or an air bag device installed in an automobile, the weight (weight) of an occupant sitting on a seat has been developed.
There is a trend to control the operation of the occupant protection device in accordance with the weight of the occupant based on the detected value. For example, it has been proposed to adjust the amount of deployment gas and the deployment speed of the airbag in accordance with the weight of the occupant, or to adjust the pretension of the seat belt.

As an example of a device for detecting the weight of an occupant sitting on a seat, there is a seat weight measuring device disclosed in Japanese Patent Application Laid-Open No. 2000-258233. Below, the 16th ~
With reference to FIG. 19, a seat weight measuring device of the same issue will be described. First, the structure around the seat of the vehicle will be described with reference to FIG.

FIG. 19A is a front sectional view schematically showing a structural example of a portion for attaching a seat to a vehicle body, and FIG. 19B is a side view of the same. The arrows in the figure indicate the following directions. Above: Upward in the direction of gravity when the vehicle is horizontal, Down: Downward in the same direction, Front: Forward direction of the vehicle, Rear: Backward direction of the vehicle, Left: Left in the forward direction of the vehicle, Right: Same in the right.

FIG. 19 shows the sheet 3. The person 1 sits on the seat cushion 3a of the seat 3. The lower surface of the seat cushion 3a is supported by a seat frame 5 made of a steel plate. The seat frame 5 includes a bottom plate 5a,
It consists of parts such as a horizontal plate 5c, a vertical plate 5e, and a slide plate 5g. The bottom plate 5a extends so as to cover the lower surface of the seat cushion 3a. The horizontal plate 5c extends along the left and right sides of the lower surface of the bottom plate 5a. The vertical plate 5e is hung from the center of the lower surface of the horizontal plate 5c. The slide plate 5g protrudes like a blade to the left and right of the vertical plate 5e, and further has a tip bent upward.

[0006] Two seat rails 7 are provided below the left and right sides of the seat 3 so as to extend in the front-rear direction and in parallel. The cross section of the seat rail 7 is U-shaped, and has a recess 7c inside. The opening above the recess 7c is a groove 7a extending in the front-rear direction. The groove 7a contains the vertical plate 5e of the seat frame 5.

The slide plate 5g of the seat frame 7 is accommodated in the recess 7c of the seat rail 7. The slide plate 5g is slidable in the seat rail 7 in the front-rear direction.

A seat weight measuring device 9 is connected to the lower surface of the seat rail 7. The seat weight measuring device 9 has an elongated box-like outer shape extending in the front-rear direction. Details of the seat weight measuring device 9 will be described later.

A seat bracket 11 is attached to the front and rear ends of the lower surface of the seat weight measuring device 9. The seat bracket 11 is fixed to a seat mounting portion 13 of the vehicle body with bolts or the like.

FIG. 16A is an exploded perspective view showing the entire structure of the seat weight measuring device, and FIG. 16B is a front sectional view of a pin bracket. 17 (A) is a plan view of the seat weight measuring device 9, FIG. 17 (B) is a side sectional view, and FIGS. 17 (C) and (D) are front sectional views. In FIGS. 16 and 17, a rear half portion of the seat weight measuring device 9 is not shown.

FIG. 18 (A) is a plan view showing the relationship between the sensor plate and the half arm, FIG. 18 (B) is a side view in a no-load state, and FIG. 18 (C) shows that a load is applied. It is a side view which shows a state typically.

The seat weight measuring device 9 is constituted by using a base (base frame) 21 in the form of an elongated rail as a base. The base 21 is elongated in the front-rear direction when attached to the vehicle body, and as shown in FIGS. 17 (C) and 17 (D), is a pressed steel plate having a U-shaped front cross section. The bottom portion of the cross section of the base 21 is called a bottom plate 21c,
A portion that is bent 90 ° from the left and right ends of the bottom plate 21c and rises up is referred to as a side plate 21a.

The base side plate 21a is provided with two pin holes 21e and 21g at the front and rear, respectively. The holes 21e and 21g are opened to face the left and right side plates 21a and 21a '.

The hole 21e near the end is formed at a position closer to the center about 1/8 of the entire length of the base 21 from the front and rear ends of the base 21. The hole 21e is a long hole that extends vertically as shown in FIG. 17 (B). The end of the bracket pin (stopper pin) 27 is contained in the elongated hole 21e.

However, the bracket pin 27 and the long hole 21e
There are gaps on the upper, lower, left and right sides, so that the bracket pin 27 does not normally touch the inner edge of the long hole 21e. However, when an excessive load is applied to the seat weight measuring device 9 (specifically, a pin bracket 25 as a load transmitting member described later), the bracket pin 27 is lowered to hit the lower edge of the elongated hole 21e, and the excess load is It is not transmitted to a load sensor (sensor plate 51, which will be described in detail later). That is, pin 2
7 and the long hole 21e constitute a part of a mechanism for limiting the upper limit of the load applied to the sensor plate 51. The main role of the bracket pin 27 is to transmit the seat weight applied to the pin bracket 25 to the Z arm (arm member) 23.

A pin hole 21g is formed slightly near the center of the elongated hole 21e (approximately 1/10 the center of the entire length of the base 21). A base pin (pivot pin) 31 penetrates the hole 21g. The base pin 31 exists so as to bridge between the left and right base side plates 21a and 21a '. Retainers 33 are attached to left and right ends of the pin 31, and the base pin 31 is fixed to the base 21. The base pin 31 is a rotation center axis of the Z arm 23.

The Z arm 23 is arranged inside the base 21. The planar shape of the Z arm 23 is bifurcated at the center (forked part 23h), and the front and rear ends are rectangular. At the left and right ends of the half of the Z arm 23 near the front and rear ends, side plates 23a that are turned upward by 90 degrees are formed. The fork 23h is a simple flat plate. The side plate 23a extends along the inside of the side plate 21a of the base 21. However, there is a gap between both side surfaces 23a, 21a.

The Z arm side plate 23a also has two pin holes 2
3c and 23e are opened. Pin hole 2 near front and rear end
A bracket pin 27 passes through 3c. The base pin 31 passes through the pin hole 23e near the center. Base side plate 21a around base pin 31 and Z arm side plate 2
A perforated disk-shaped spacer 35 is fitted between the holes 3a. The Z arm 23 rotates around the base pin 31.

The fork 23h of the Z-arm 23 is substantially half the length of the Z-arm 23. The portion 23h is divided into right and left and extends toward the center in the front-rear direction, and becomes narrower toward the center. The action portion 23j at the tip of the Z arm fork portion 23h is connected to the blade portions 4 of the upper and lower half arms 41 and 42.
It is sandwiched between 1a and 42a.

When a load is applied to the pin bracket (load transmitting member) 25, the load is transmitted to the Z arm 23 via the bracket pin 27, and the Z arm 23 rotates slightly (up to about 5 °), The action part 23j is a half arm 4
The load is transmitted to the sensor plate 51 of the load sensor 50 via the first and second sensors 42.

As shown in FIG. 17C, the pin bracket 25 has a substantially U-shaped cross section. The length in the front-rear direction is not so long, approximately 1/20 of the base 21. The upper surface 25a of the pin bracket 25 is flat, and the seat rail 7 shown in FIG. Both are firmly connected by bolting or the like.

The left and right side plates 25b of the pin bracket 25 are hung right and left of the bracket 25, and the lower ends thereof are bent inward. Side plate 25b is Z arm side plate 23
It is arranged with play inside a. Side plate 25b
Has a pin hole 25c. The bracket pin 27 penetrates the hole 25c. The dimension of the pin hole 25c is larger than the diameter of the bracket pin 27. The gap between them absorbs dimensional errors and unexpected deformations of the seat and the vehicle body.

A spring plate 29 is sandwiched between the left and right side plates 25b of the pin bracket 25 and the left and right Z arm side plates 23a. The spring plate 29 has a spring washer-like portion with a hole, and is fitted with a gap outside the bracket pin 27. The spring plate 29 is provided with the pin bracket 25.
The centering mechanism for urging the center in the center direction is configured.

Such a centering mechanism positions the pin bracket 25 as close to the center of the slidable range as possible. By the action of the centering mechanism, the movable range of the slide mechanism and the rotation mechanism can be secured in both directions (left, right, up, down, front and back) after the seat weight measuring device is attached.

Next, the configuration around the sensor plate 51 will be described.

On a sensor plate (spring material) 51 which is a base material of the load sensor 50, a strain gauge composed of a bridge circuit formed by strain resistors 54a to 54d is formed.

As shown in FIGS. 17 and 18, the sensor plate 51 has a column 63 at the center of the base bottom plate 21c.
Above, it is firmly fixed by a washer 67, a nut 68, and a bolt 69.

The half arms 41 and 42 are connected to the seventeenth and eighteenth
As shown in the figure, the front and rear and upper and lower four-piece parts are assembled so as to sandwich the front and rear of the sensor plate 51 from above and below, and are fixed to the sensor plate 51 by bolts 43 and the like.

Both fulcrums 41b, 42b of blades 41a, 42a extending left and right from upper and lower half arms 41, 42, respectively.
The action portion 23j of the Z arm 23 is sandwiched between the two.
The position of the fulcrum is determined by two strain gauges 54a,
It is located just in the middle of 54c or 54d, 54b (constriction 51c of sensor plate 51).

The pin bracket 2 of the seat weight measuring device 9
When a load is applied to 5, the Z-arm 23 rotates slightly, and the action portion 23j is lifted up. FIG. 18C schematically shows the state of the sensor plate and the half arm in an exaggerated manner.

When the Z-arm operating portion 23j is lifted, the fulcrum 41b of the upper half arm 41 is lifted. Therefore, a moment M is applied to the front and rear ends of the sensor plate 51. Due to the moment M, the strain gauges 54a and 54b at the ends in the front-rear direction are pulled, and the strain gauges 54c and 54d at the center are compressed. The change in resistance of each strain gauge due to this is taken out as an electric signal, and the distortion of the sensor plate and the load applied to the pin bracket 25 are measured.

The pin bracket 25 is firmly fixed to the seat rail 7 with bolts, rivets and the like.

[0033]

FIG. 20 shows an example of a connecting structure between the pin bracket (load transmitting member) 25 and the seat rail 7. As shown in FIG. FIG. 20 is an exploded perspective view showing a general connection structure between a load transmitting member and a seat rail.

Bolts or rivet insertion holes 25d and 7d are formed in the upper part of the pin bracket 25 and the lower part of the seat rail 7, respectively. Then, bolts or rivets 60 are inserted into these insertion holes 25d and 7d,
The bolt or rivet 60 is fastened with a groove 7a of the seat rail 7 or a tool inserted from the outside open ports 7e and 21f at the ends of the seat rail 7 and the base 21 so that the pin bracket 25 and the seat rail 7 are fastened. Are linked.

However, actually, the seat rail 7
Since the opening area of the groove 7a, the outer opening 7e, 21f at the end of the seat rail 7 and the base 21 is very small, and the space around the seat inside the vehicle body is also small, bolts, rivets, etc. are inserted through each. Of course, it is not easy to insert the tool through the groove 7a or the opening 7e, 21f to fasten the bolt or rivet 60, and to connect the pin bracket 25 and the seat rail 7 to the hole 25d, 7d. The present invention has been made in view of such a problem, and an object of the present invention is to provide a seat weight measuring device in which a load transmitting member and a seat rail can be easily connected.

[0036]

SUMMARY OF THE INVENTION A seat weight measuring device according to the present invention (claim 1) is a device for measuring a seat weight including a weight of an occupant sitting on a vehicle seat. A rail-shaped base frame to be fixed,
An arm member rotatably supported by a pivot member with respect to the base frame in a vertical direction; and an arm member attached to the arm member and movably engaged with an opening of the base frame, and A stopper pin for regulating the range, and a load transmitting member having an insertion hole through which the stopper pin is inserted and a seat rail mounting portion, and the load transmitting member applies a force from the seat rail to the stopper pin through the load transmitting member. The arm member is rotated around the pivot member by the applied load, and the sensor is displaced by the rotation of the arm member.
The load transmitting member is provided with an engagement piece disposed outside the base frame, and the seat rail is connected to the engagement piece.

In the seat weight measuring device according to the first aspect, since the engagement piece is disposed outside the base frame from the load transmitting member, the connecting work between the seat rail and the engagement piece is performed. easy.

In this seat weight measuring device, the engaging piece is provided to protrude laterally from the load transmitting member, and the seat rail is provided with a protruding piece overlapping the engaging piece. It is preferable that the load transmitting member and the seat rail are connected by connecting the pieces to each other (claim 2). In such a configuration, the connection between the load transmitting member and the seat rail is extremely easy.

A seat weight measuring apparatus according to the present invention (claim 3) is an apparatus for measuring a seat weight including a weight of an occupant sitting on a vehicle seat, and comprises a vehicle body or a rail fixed to the seat. A base frame, an arm member rotatably supported by a pivot member with respect to the base frame, and attached to the arm member, movably engaged with an opening of the base frame, A stopper pin that regulates a rotation range of the arm member; and a load transmitting member having an insertion hole in which the stopper pin is inserted and a seat rail mounting portion, and The arm is rotated around the pivot member by the load applied to the stopper pin, and the sensor is displaced by the rotation of the arm member. In the weight measuring device, the load transmitting member is provided with an engaging piece disposed at an outer opening of the base frame and facing outward of the base frame, and the seat rail is connected to the engaging piece. It is characterized by having been done.

In the seat weight measuring device according to the third aspect, since the engagement piece provided on the load transmitting member faces outward from the base frame from the outward opening, the seat is attached to the engagement piece. Easy to connect rails.

In the seat weight measuring apparatus according to the third aspect, a projection is provided on the seat rail so as to overlap with the engagement piece of the load transmitting member, and the load is formed by connecting the engagement piece and the projection. You may comprise so that a transmission member and a seat rail may be connected.

[0042]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of a seat weight measuring device according to an embodiment of the present invention.

The seat weight measuring device 90 has a configuration similar to that of the seat weight measuring device 9 of JP-A-2000-258233, and includes a rail-shaped base frame 121 fixed to the vehicle body. And an arm member 123 (corresponding to the Z arm 23) rotatably supported by a pivot pin 131 (corresponding to the base pin 31) with respect to the base frame 121, and an arm member. Stopper pin 127 attached to one end side for restricting the rotation range of arm member 123
(See FIGS. 6 to 13 to be described later; not shown in FIGS. 1 to 5; equivalent to the bracket pin 27.)

The arm member 123 is an elongated plate-like member having a length of about half the length of the base frame 121 in the longitudinal direction, and one arm member 123 is provided on each of the one half and the other half of the base frame 121 in the longitudinal direction. Have been. One half of the arm member 123 including the end on the side away from the stopper pin 127 is an operating portion (not shown, corresponding to the operating portion 23j) that is bifurcated into right and left.
The tip moves up and down with the rotation of the pivot pin 131 around the pivot pin 131. Each of the arm members 123 extends inside the base frame 121 so as to abut the action portions toward the center of the base frame 121 in the longitudinal direction.

Although not shown, the sensor 50 having a sensor plate is provided at the center of the base frame 121 in the longitudinal direction.
A load sensor similar to that described above is installed, and the tip of the operating portion of the arm member 123 is connected to the sensor plate via a half arm. This sensor plate is fixed to a column erected at the center of the base frame 121 with bolts, nuts, and the like. When a vertical load is applied to the stopper pin 127, each arm member 123 rotates around the pivot pin 131, and the distal end of the working portion moves up and down. At this time, a distortion is generated in the sensor plate connected to the tip of the action section, and the sensor is moved to the stopper pin 127 based on the distortion.
Detects the load applied to.

Further, similarly to the seat weight measuring device 9, the seat weight measuring device 90 includes a pair of seat rails 70 (the seat rails) extending below the left and right sides of a vehicle seat (not shown). (Corresponding to the rails 7) from below, and is fixed to the vehicle body floor via a seat bracket (not shown) provided at the lower portion of the base frame 121 (see FIG. 19). Seat rail 70
The seat weight measuring device 90 is connected to the seat weight measuring device 90 via a load transmitting member 125 (corresponding to the pin bracket 25) attached to the stopper pin 127.

The load transmitting member 125 is connected to a lower portion of a seat rail 70 extending below right and left sides of a seat (not shown) installed on the vehicle body, and connects the seat weight measuring device 90 and the seat rail 70 to each other. While being connected, the weight of the seat including the weight of the seated person is transmitted to the stopper pin 127. The seat weight transmitted to the stopper pin 127 is detected by the load sensor via the above-described mechanism.

At the upper part of the load transmitting member 125, an engagement piece 150 whose both ends protrude to the left and right sides of the base frame 121 is attached. The engagement piece 150 is formed of an elongated strip-shaped metal piece. Male screws 151 are provided upright near both ends arranged outside the base frame 121.

At the lower part of the seat rail 70, there are provided projections 71, both ends of which protrude laterally from the edge of the seat rail 70 and overlap with the engagement pieces 150. The protruding piece 71 is formed of an elongated strip-shaped metal piece attached to the lower surface of the seat rail 70, and at both ends thereof,
An insertion hole 72 into which the male screw 151 of the engagement piece 150 is inserted is provided.

The engaging piece 150 and the protruding piece 71 are overlapped with each other so that the left and right male screws 151 are inserted into the respective insertion holes 72, and the nut 500 is fitted to the respective male screws 151 protruding from the insertion holes 72. They are connected by being tightened. The load transmitting member 125 is firmly connected to the seat rail 70 via the engaging piece 125 and the projecting piece 71 thus connected.

In the seat weight measuring device 90 configured as described above, the engaging piece 125 of the load transmitting member 125 and the projecting piece 71 of the seat rail 70 are both disposed outside the base frame 121. The work for connecting these is easy to perform. For this reason, the load transmitting member 12
The seat 5 and the seat rail 70 are very easily connected via the engaging piece 125 and the protruding piece 71.

In this embodiment, the load transmitting member 125
From the engagement piece 1 arranged outside the base frame 121
A male screw 151 is provided upright on both ends of the projection 50, and the male screw 150 is inserted into the insertion hole 72 of the protruding piece 71, and the nut 500 is tightened from the tip thereof, whereby the engaging piece 150 and the protruding piece 71 are connected. Although they are configured to be connected, the structures of the engaging pieces and the protruding pieces and the method of connecting them are not limited to the above-described configuration.

FIGS. 2 to 5 are exploded perspective views of essential parts showing a modification of the connection structure between the load transmitting member and the seat rail shown in FIG. 1. In each figure, the same reference numerals as in FIG. 1 are used. Indicates the same part.

For example, the engagement piece 150A shown in FIG. 2 is provided with rivets or bolt insertion holes 151 at both ends of the engagement piece 150A disposed outside the base frame 121 from the load transmission member 125. Similarly, rivets or bolt insertion holes 72A are provided at both ends of a projecting piece 71A projecting from the lower part of the seat rail 70 to the left and right sides so as to overlap the engaging piece 150A. The engaging piece 150A and the protruding piece 72A are firmly connected to each other by fastening the rivet 600 or a bolt nut (not shown) through the respective insertion holes 151 and 72A.

The engagement piece 150B shown in FIG. 3 has a pair of upright portions 153 that are provided outside the base frame 121 and that stand upward from both ends. Each standing part 1
The bolt insertion hole 154 penetrating the upright portion 153 in a direction orthogonal to the longitudinal direction of the base frame 121 is formed in the 53. Also, at both ends of a projecting piece 71B that protrudes from the lower part of the seat rail 70 on both the left and right sides, upstanding parts 73 are provided, each of which is erected upward. It engages with the engagement piece 150B so as to overlap the inside of the 153 (the sides of the upright portions 153 facing each other). A bolt insertion hole 72 coaxially overlapping with the insertion hole 154 is formed in each upright portion 73 of the protruding piece 71B.
B is drilled. The insertion holes 73B are provided inside the upright portions 73 (on the sides where the upright portions 73 face each other).
A nut 501 to which a bolt inserted through is screwed is fixed.

The engaging piece 150B and the protruding piece 71B are engaged with each other so that the insertion holes 153 and 72B are coaxially overlapped, and the bolts are inserted into the overlapped insertion holes 153 and 72B from the side of the base frame 121. The bolt 601 is inserted, and the distal end of the bolt 601 is screwed into the nut 501 to be firmly connected.

The engagement piece 150C shown in FIG. 4 has a pair of hanging parts 153 'which are arranged outside the base frame 121 and hung downward from both ends thereof. A bolt insertion hole 155 penetrating in a direction perpendicular to the longitudinal direction of the base frame 121 is formed in each hanging portion 153 '. Protrusions 71 projecting from the lower part of the seat rail 70 to both left and right sides
At both ends of C, a drooping portion 73 ′ drooping downwards, respectively.
Are provided, and the projecting piece 71 </ b> C
′ Is outside the hanging portion 153 ′ (each hanging portion 15 ′).
The side of 3 'away from each other. ) So that the engagement piece 15
It is engaged with OC. Each hanging portion 73 ′ of the projecting piece 71 </ b> C has a bolt insertion hole 7 coaxially overlapping with the insertion hole 155.
2C is drilled. A nut 502 into which a bolt inserted into the insertion hole 155 is screwed is fixed inside each of the hanging parts 153 '(on the side where the hanging parts 153' face each other).

A bolt 601 is inserted from the side of the base frame 121 into the through-holes 155 and 72C which are coaxially overlapped with the engaging piece 150C and the protruding piece 71C. It is firmly connected by screwing.

The engaging pieces 150A to 150C and the protruding pieces 71A to 71C are attached to the upper part of the load transmitting member 125 or the lower part of the seat rail 70, respectively, similarly to the aforementioned engaging piece 150 and the protruding piece 71. Depending on the shape of the load transmitting member and the seat rail, the engaging piece or the protruding piece may be, for example, separated from the load transmitting member 125 or the seat rail 70 in a direction away from the load transmitting member 125 or the seat rail 70 depending on the shape of the load transmitting member and the seat rail. It may be a pair of members made of separate metal pieces or the like protruding outside the frame 121.

The seat rail 70A shown in FIG. 5 has a shape in which the lower portion protrudes downward, and separate protruding pieces 71D projecting from the side surfaces to the outside of the base frame 121 are respectively provided on the left and right side surfaces. Installed.
The same engaging piece 151C as that shown in FIG. 4 is attached to the upper part of the load transmitting member 125 of the seat weight measuring device 90.

The protruding pieces 71D projecting from the respective side surfaces of the seat rail 70A have their tip ends overlapping the hanging part 153 'of the engaging piece 150C. An insertion hole 72D that overlaps with the bolt insertion hole 155 of the hanging portion 153 'is provided on the distal end side of each protruding piece 71D. Each protruding piece 71D and the engaging piece 150C are engaged so that the insertion hole 155 and the insertion hole 72D coaxially overlap, and the bolt 601 is inserted into the overlapped insertion holes 155 and 72D from the side of the base frame 121. The nut 50 is inserted and the distal end side of the bolt 601 is fixed inside the hanging portion 153 ′ of the engagement piece 150.
1 is firmly connected by being screwed.

In the above embodiment, the engagement pieces 150, 15
Each of 0A-C and the protruding pieces 71, 71A-D is formed separately from the load transmitting member 125 or the seat rail 70, but is integrated with the load transmitting member 125 or the seat rail 70 (or the seat rail 70A). May be configured.

In the connection structure between the engaging piece and the projecting piece shown in FIGS. 3 to 5, a nut is fixed inside the engaging piece or the tip of the projecting piece. The base frame 12 is inserted into the bolt insertion hole provided in each of the projecting pieces.
A bolt is inserted from the side of 1 and the bolt is screwed into the nut to connect the engaging piece and the protruding piece. The engaging piece and the protruding piece may be connected by omitting the nut fixed to the inside of the tip of the mating piece or the protruding piece and fastening a rivet or the like through the insertion hole.

FIG. 6 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of a seat weight measuring device according to another embodiment of the present invention. In FIG. 6, the same reference numerals as those in FIGS. 1 to 5 indicate the same parts.

As shown in FIG. 6, in this embodiment, a leg-like connecting piece 700 is attached to the lower part of the seat rail 70. The seat weight measuring device 90 uses the connecting piece 7
00 and the seat rail 70. The connecting piece 700 has a leg 700 a extending downward from a lower portion of the seat rail 70.
It is joined to the upper part of the load transmitting member 125 of the seat weight measuring device 90 via a joining portion 700b provided at the lower end of 00a. The joint 700b has a male screw insertion hole 700
c is bored, and a male screw 156 erected on the upper portion of the load transmitting member 125 is inserted. Then, the nut 503 is screwed into the distal end side of the male screw 156 protruding from the insertion hole 700c, so that the joining portion 700b
Are firmly fixed to the load transmitting member 125.

The other configurations of the seat rail 70 and the seat weight measuring device 90 are the same as those of the above-described embodiment.

When the load transmitting member 125 and the seat rail 70 are connected via the connecting piece 700 in this manner, the seat rail 70 is disposed above the seat weight measuring device 90 so as to be separated. When connecting the load transmitting member 125 and the seat rail 70, the connecting operation can be easily performed using the space between the seat weight measuring device 90 and the seat rail 70.

Next, a connection structure between a load transmitting member and a seat rail of a seat weight measuring apparatus according to still another embodiment of the present invention will be described with reference to FIG. In addition,
FIG. 7 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of the seat weight measuring device according to the embodiment. In FIG. 7, the same reference numerals as those in FIGS. The part is shown.

As shown in FIG. 7, the seat weight measuring device 9
The zero load transmitting member 125 is provided with an engagement piece 150D that is disposed at the outer opening 121a at the end of the base frame 121 and faces outward from the outer frame 121 from the outer opening 121a. . A male screw 157 is provided upright on a front surface (a surface facing the outside of the base frame 121 from the outside opening 121a) of the engagement piece 150D.
Further, the engaging piece 15 is provided on the distal end side of the seat rail 70.
A projecting piece 71E that overlaps from the outer side of the base frame 121 is provided at 0D. The protruding piece 71E is provided with an insertion hole 72E through which the male screw 157 is inserted.
Other configurations of the seat weight measuring device 90 and the seat rail 70 are the same as those of the above-described embodiment.

The engaging piece 150D and the protruding piece 71E are overlapped so that the male screw 157 is inserted into the insertion hole 72E, and the male screw 1 protruding from the insertion hole 72E.
The nut 504 is tightly connected by tightening the nut 504 from the tip side of the 57. The load transmitting member 125 and the seat rail 70 are connected with the engagement pieces 150D thus connected.
And the projection 71E.

In the present embodiment, the engaging piece 150D provided on the load transmitting member faces outward from the base frame 121 through the outward opening of the base frame 121. Since the seat rail 70 is connected from the outside of the base frame 121, the engagement piece 1
The connection work between 50D and the protruding piece 71E can be easily performed, and the load transmitting member 125 and the seat rail 70 can be connected without difficulty.

In the present embodiment, the load transmitting member 1
25 is provided on the base frame 1.
The protrusion 71E is disposed at the outer opening 121a at the end of the base 21 and faces the outside of the base frame 121 from the outer opening 121a. The engaging piece 150D and the projecting piece 71E are configured to be connected by tightening a nut into the male screw 157 inserted into the insertion hole 72E of the projecting piece 71E. The structure and the method of joining these are not limited to the above-described configuration.

For example, referring to FIG.
25 is provided on the base frame 1.
21 faces the outside opening 121a at the end thereof, and the front surface faces outward and diagonally upward of the base frame 121. A bolt insertion hole 158 is formed in the engagement piece 150E from the front side, and a nut 505 to which a bolt inserted in the insertion hole 158 is screwed is fixed to the back side. A bolt insertion hole 72F connected to the insertion hole 158 is provided on the protruding piece 71F provided on the distal end side of the seat rail 70 and overlapping the engagement piece 150E. The projecting piece 71 overlaps the front surface of the engaging piece 150E so that each of the insertion holes 158 and the insertion hole 72F communicate with each other. Bolts 602 are inserted into these insertion holes 158 and 72E from outside and obliquely above the base frame 121. The bolt 6
02 is connected to the engaging piece 150E by screwing into the nut 505 on the back side of the engaging piece 150E.

FIG. 8 is an exploded perspective view of an essential part showing a modification of the connection structure between the load transmitting member and the seat rail shown in FIG. 7, and is the same as FIG. 1 to FIG. Reference numerals indicate the same parts.

FIG. 9 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail according to another embodiment of the present invention. In FIG. 9, the same reference numerals as those in FIGS. 1 to 8 indicate the same parts.

As shown in FIG. 9, the seat weight measuring device 9
0 through the outer opening 121a at the end of the base frame 121.
Is provided with an engagement piece 150F which protrudes outside.
The engagement piece 150F is a protruding piece that protrudes toward the distal end of the base frame 121 along the upper surface of the load transmitting member 125. A projecting piece 71G that overlaps the upper surface of the engaging piece 150F is provided on the distal end side of the seat rail 70. Bolts or rivet insertion holes 159 and 72G that are coaxially overlapped with each other are provided on the engagement piece 150F and the protruding piece 71G, respectively. Other configurations of the seat weight measuring device 90 and the seat rail 70 are the same as those of the above-described embodiment.

The engaging piece 150F and the protruding piece 71G are overlapped so that the through hole 159 and the through hole 72G are coaxially connected, and the rivet 603 or a bolt (not shown) is inserted through the through holes 159 and 72G. The nuts and the like are firmly connected by being fastened. The load transmitting member 125 and the seat rail 70 are connected via the engaging piece 150F and the protruding piece 71G thus connected.

In this embodiment, since the engaging piece 150F provided on the load transmitting member projects from the outer opening of the base frame 121 to the outside of the base frame 121, the engaging piece 150F and the projecting piece The connection work with 71G can be easily performed, and the load transmitting member 125 and the seat rail 70 can be connected without difficulty.

In this embodiment, the load transmitting member 1
25 is provided with the load transmitting member 12.
5 is a protruding piece that protrudes toward the distal end side of the base frame 121 along the upper surface of the base piece 5, but the configuration of the engaging piece is not limited to this, and the protruding piece that overlaps this engaging piece also has the above configuration It is not limited to. Further, the method of connecting the engaging pieces and the protruding pieces is not limited to the above-described configuration.

FIGS. 10 to 12 are exploded perspective views of a main part showing a modification of the connection structure between the load transmitting member and the seat rail shown in FIG. 9, and are the same as those in FIGS. Indicate the same part.

For example, the engagement piece 150G shown in FIG.
Along the upper surface of the load transmitting member 125, the base frame 12 is opened through the outer opening 121 a of the base frame 121.
1 and the overhanging portion 160a
It has a folded portion 160b which is folded from the tip of the extension direction of 60a to the upper side of the extension portion 160a. At the end of the seat rail 70, a protruding piece 71G having the same rivet or bolt nut insertion hole 72G as that shown in FIG. 9 is provided. The projecting piece 71G engages with the engaging piece 150G so as to be sandwiched between the projecting part 160a and the folded part 160b. The protruding piece 71 is provided on each of the folded portion 160a and the protruding portion 160b of the engagement piece 150G.
Rivets or bolt insertion holes 161a and 161b are provided so as to be coaxial with the G insertion hole 72G.

The engaging piece 150G and the projecting piece 71G sandwiched between the protruding part 160a and the folded part 160b are firmly fixed by the rivets 603 fastened through the insertion holes 160a and 160b and the insertion hole 72G. It is connected to.
The rivet 603 is replaced with the insertion hole 160
The engaging piece 150G and the protruding piece 71G may be connected by fastening a bolt nut or the like (not shown) through the holes a and 160b and the insertion hole 72G.

An engaging piece 150H shown in FIG. 11 includes a projecting portion 162a projecting from the outer opening 121a of the base frame 121 to the outside of the base frame 121 along the upper surface of the load transmitting member 125. It has a folded portion 162b that extends from one side of the overhang portion 162a and is folded over the overhang portion 162a. Seat rail 7
The projecting piece 71G is provided at the leading end of the zero. The projecting piece 71G engages with the engaging piece 150H so as to be sandwiched between the projecting part 162a and the folded part 162b. The folded portion 162a and the overhang portion 162b of the engagement piece 150H include
Rivets or bolt insertion holes 163a and 163b are provided so as to be coaxial with the insertion hole 72G of the protruding piece 71G.

The engaging piece 150H and the projecting piece 71G sandwiched between the overhanging portion 162a and the folded portion 162b are connected to the rivet 603 or a bolt (not shown) through the insertion holes 163a and 163b and the insertion hole 72G. The nuts and the like are firmly connected by being fastened.

In the connection structure between the load transmitting member 125 and the seat rail 70 shown in FIG.
11, a protrusion 162a extending from the outer opening 121a of the base frame 121 to the outside of the base frame 121 along the upper surface of the load transmitting member 125, which is the same as that shown in FIG. An engagement piece 150H extending from one side of the overhang portion 162a and having a folded portion 162b folded over the overhang portion 162a is provided. Projection piece 71H provided on seat rail 70
Is a projecting portion 74a projecting from the front end side along the lower surface of the seat rail 70, and the folded portion 162b of the projecting portion 74a of the engaging piece 150H is formed by the projecting portion 162a.
Extending from the side opposite to the side extending from
4a, and has a folded portion 74b folded below.

The protruding piece 71H has its folded portion 74b sandwiched between the projecting portion 162a and the folded portion 162b of the engaging piece 150H, and the folded portion 162b of the engaging piece 150H is folded with the projecting portion 74a. Engagement with the engagement piece 150H so as to be sandwiched between the portion 74b. The projecting portion 74a and the folded portion 74b of the projecting piece 71H are respectively provided with engaging pieces 15
0H overhang portion 162a and insertion hole 163 of turn-back portion 162b
A rivet or bolt insertion hole 75a, 75b is provided so as to be coaxial with the a, 163b. The engaging piece 150H and the protruding piece 71H engaged with each other are inserted into these through holes 16H.
3a, 163b and rivets 603 fastened through the insertion holes 75a, 75b or bolts and nuts (not shown).

FIG. 13 is an explanatory view showing another modification of the connection structure between the load transmitting member and the seat rail. FIG. 13 (a) is an exploded perspective view of the connecting structure, and FIG.
3 (b) and (C) are perspective views showing a method of connecting the engaging piece and the protruding piece.

The engagement piece 150I shown in FIG. 13 is a protruding piece extending along the upper surface of the load transmitting member 125 from the outer opening 121a of the base frame 121 to the outside of the base frame 121. . A projecting piece 71I overlapping the upper surface of the engaging piece 150 is provided at the end of the seat rail 70. On the left and right sides of the protruding piece 71I, a pair of folded portions 76 extending downward along both sides of the engaging piece 150I overlapping the protruding piece 71I are provided.

The engaging piece 150I and the protruding piece 71I which are overlapped with each other are formed such that each folded portion 76 of the protruding piece 71I is
I is turned inward so as to wrap around both sides of I and overlap with the lower surface of the engagement piece 150I so as to be substantially integrated (FIG. 13 (b)). Are bent downward together so that they cannot be separated from each other (FIG. 13 (c)). The load transmitting member 125 and the seat rail 70 are firmly connected via the engaging piece 105I and the protruding piece 71I thus combined.

The seat weight measuring device 90 according to each of the above-described embodiments includes a pair of seat rails 70 (or seat rails 70) extending below the left and right sides of the vehicle seat.
A) is configured to be connected to the lower side via a load transmitting member 125 and to be fixed to the vehicle body floor via a seat bracket (not shown) provided at a lower portion of the base frame 121. However, the seat weight measuring device and the connection structure between the load transmitting member and the seat rail of the present invention are not limited to this configuration.

For example, the seat weight measuring device 90A shown in FIG. 14 is attached to the lower part of the seat and is slidably mounted on a seat rail 70B fixed to the floor of the vehicle body via a bracket 111. It is connected to the slider 81 from above the seat rail 70B. FIG. 14 is an exploded perspective view showing a connection structure between the load transmitting member and the slider of the seat weight measuring device according to the embodiment of the present invention.

The seat weight measuring device 90A has a structure in which the seat weight measuring device 90 is turned upside down. That is, a rail-shaped base frame 121A (corresponding to the base 121) fixed to the lower part of the seat,
The pivot pin 131A is attached to the base frame 121A.
(Corresponding to the base pin 131). An arm member 123A (corresponding to the Z arm 123) supported rotatably in the up-down direction, and a rotation range of the arm member 123A attached to one end of the arm member 123A. Of the seat rail 70B via a load transmitting member 125A (corresponding to the load transmitting member 125) downwardly attached to the stopper pin 127A. 81. Further, in other configurations, the sheet weight measuring device 90 is turned upside down, and the load transmitting member 125A transmits the reaction force of the sheet weight transmitted from the sheet to the slider 81 via the sheet weight measuring device 90B. The reaction force received from the slider 81 and received by the load transmitting member 125 is transmitted to the stopper pin 127A,
A load sensor (not shown) detects the weight of the seat.

Hereinafter, a connection structure between the load transmitting member 125A of the seat weight measuring device 90A and the slider 81 of the seat rail 70B will be described with reference to FIGS. 14 and 15. FIG. 15 is an exploded perspective view of a main part showing a connection structure between the load transmitting member 125A and the slider 81.

The load transmitting member 125A has a distal end side (an end side of the base frame 121A in FIG. 14).
The same applies hereinafter. ) Are provided on the left and right sides of the base frame 121A or the seat rail 70B. The base frame 12
At the distal ends of the engagement pieces 164 disposed outside the seat rail 1A or the seat rail 70B, there are provided hanging portions 164a which are respectively hung downward. Each hanging portion 164a has a bolt insertion hole 165 that penetrates in a direction perpendicular to the longitudinal direction of the base frame 121A. In addition, the rear end side of the load transmitting member 125A is
A bolt insertion hole 166 is drilled from the lower surface side, and a nut 506 to which a bolt inserted into the insertion hole 166 is screwed is fixed to the upper surface side.

A bracket 77 is mounted on an upper portion of a slider 81 slidably mounted in the seat rail 70B. The bracket 77 is locked to the slider 81 so that the position thereof cannot be changed by fitting a pin 77a projecting from the lower surface of the bracket 77 into an engaging hole 83 formed in the upper portion of the slider 81.

[0097] The front end of the bracket 77 extends outwardly from the base frame 121A or the seat rail 70B, and overlaps with the engaging pieces 164 of the load transmitting member 125A.
A pair of projections 78 are provided. Each of the protruding pieces 78 is also provided with a downwardly hanging portion 78a that is downwardly hung.
Is engaged with the engaging piece 164 so as to overlap from the inside of the hanging portion 164a (the side where each hanging portion 164a faces).
A bolt insertion hole 79 coaxially connected to the insertion hole 165 is formed in the hanging portion 78a of each protruding piece 78. A nut 507 to which a bolt inserted into the insertion hole 79 is screwed is fixed inside each of the hanging portions 78a (on the side where the hanging portions 78a face each other).

At the rear end side of the bracket 77, a bolt insertion hole 80 coaxially overlapping the insertion hole 166 at the rear end side of the load transmitting member 125A is formed. Further, a bolt insertion hole 82 similar to this is also formed in the rear end side of the slider 81.

The load transmitting member 125A and the slider 81 are connected via a bracket 77. That is, the bolt 60 is inserted into each of the insertion holes 165 and 79 which are coaxially overlapped.
4 is a base frame 121A or a seat rail 70B.
Of the bolt 601 is screwed into the nut 507 so that each engaging piece 164 and the protruding piece 78
Are connected to the insertion holes 166, 80, and 83, which are also coaxially stacked, from the lower side of the slider 81.
The load transmission member 125A, the bracket 77, and the slider 81 are firmly connected to each other by screwing the front end 05 of the bolt 605 into the nut 506 on the upper surface side of the load transmission member 125A.

The load transmitting member 125 thus configured
Also, in the connection structure between the A and the slider 81, the engagement piece 125 of the load transmitting member 125A and the
Are arranged outside the base frame 121A or the seat rail 70B, so that the work for connecting them is easy.

[0101]

As described in detail above, the present invention (Claim 1)
According to the seat weight measuring device, the load transmitting member is provided with the engaging piece disposed outside the base frame, and the seat rail is connected to the engaging piece, so that the load transmitting member and the seat rail can be connected to each other. Connection work can be performed easily. Further, by providing a projection on the seat rail so as to overlap the engaging piece and connecting the engaging piece and the projecting piece, the load transmitting member and the seat rail can be more easily connected. Become.

According to the seat weight measuring device of the present invention (claim 3), the load transmitting member is provided with the engaging piece disposed at the outward opening of the base frame and facing outward of the base frame. Even when the seat rail is connected to the engagement piece, the connection work between the load transmitting member and the seat rail can be easily performed.

[Brief description of the drawings]

FIG. 1 is an essential part exploded perspective view showing a connection structure between a load transmitting member and a seat rail of a seat weight measuring device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part showing a modification of the connection structure of FIG. 1;

FIG. 3 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of the seat weight measuring device according to the embodiment.

FIG. 4 is an exploded perspective view of a main part showing a modification of the connection structure of FIG. 3;

FIG. 5 is an exploded perspective view of a main part showing another modification of the connection structure of FIG. 3;

FIG. 6 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of a seat weight measuring device according to another embodiment of the present invention.

FIG. 7 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of a seat weight measuring device according to still another embodiment of the present invention.

FIG. 8 is an exploded perspective view of a main part showing a modification of the connection structure of FIG. 7;

FIG. 9 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of the seat weight measuring device according to the embodiment of the present invention.

FIG. 10 is an exploded perspective view of a main part showing a modified example of the connection structure of FIG. 9;

FIG. 11 is an exploded perspective view of a main part showing a modification of the connection structure of FIG. 9;

FIG. 12 is an exploded perspective view of a main part showing a modification of the connection structure of FIG. 9;

FIG. 13 is an exploded perspective view of a main part showing a modification of the connection structure of FIG. 9;

FIG. 14 is an exploded perspective view of a main part showing a connection structure between a load transmitting member and a seat rail of the seat weight measuring device according to the embodiment of the present invention.

FIG. 15 is an exploded perspective view of a main part of the connection structure of FIG. 14;

FIG. 16 is an exploded perspective view and a sectional view of a main part of a seat weight measuring device according to a conventional example.

FIG. 17 is an explanatory diagram showing a configuration of the seat weight measuring device of FIG. 16;

18 is an explanatory diagram showing a configuration of a load sensor portion of the seat weight measuring device of FIG.

FIG. 19 is an explanatory diagram showing an installation state of the seat weight measuring device of FIG. 16;

FIG. 20 is an exploded perspective view of a main part showing a general connection structure between a load transmitting member and a seat rail.

[Explanation of symbols]

 70, 70A, 70B Seat rail 77 Bracket 71, 71A to 71I, 78 Projection piece 81 Slider 90, 90A Seat weight measuring device 121, 121A Base frame 123, 123A Arm member 131, 131A Pivot pin 127, 127A Stopper pin 125, 125A Load transmission member 150, 150A to 150I, 164 Engagement piece 700 Connection piece

Claims (3)

[Claims] 1. An apparatus for measuring a seat weight including a weight of an occupant sitting on a vehicle seat, comprising: a vehicle body or a rail-shaped base frame fixed to the seat; and a pivot member with respect to the base frame. An arm member rotatably supported in a vertical direction, a stopper pin attached to the arm member and movably engaged with an opening of the base frame to regulate a rotation range of the arm member; A load transmitting member having an insertion hole through which the stopper pin is inserted and a seat rail mounting portion, wherein the pivot member is rotated around the pivot member by a load applied to the stopper pin from the seat rail via the load transmitting member. In the seat weight measuring device in which the arm member rotates and the sensor is displaced by the rotation of the arm member, A seat weight measuring device comprising: an engagement piece disposed outside a base frame; and wherein the seat rail is connected to the engagement piece. 2. The engagement piece according to claim 1, wherein the engagement piece projects sideward from a load transmitting member, and the seat rail is provided with a projection piece overlapping the engagement piece. A seat weight measuring device characterized by being connected to a protruding piece. 3. An apparatus for measuring a seat weight including a weight of an occupant sitting on a vehicle seat, comprising: a vehicle body or a rail-shaped base frame fixed to the seat; and a pivot member with respect to the base frame. An arm member rotatably supported in a vertical direction, a stopper pin attached to the arm member and movably engaged with an opening of the base frame to regulate a rotation range of the arm member; A load transmitting member having an insertion hole through which the stopper pin is inserted and a seat rail mounting portion, wherein the pivot member is rotated around the pivot member by a load applied to the stopper pin from the seat rail via the load transmitting member. In the seat weight measuring device in which the arm member is rotated and the sensor is displaced by the rotation of the arm member, A seat weight is provided at an outer opening of the base frame and is provided with an engagement piece facing the outside of the base frame, and the seat rail is connected to the engagement piece. Measuring device.