JPH04123754U - Seat belt sliding anchor structure - Google Patents

Abstract

(57) [Summary] [Purpose] Even though the adjuster rail and slider are designed and manufactured in such a way that the gap between them is extremely small, the slider gets caught in the adjuster rail and generates abnormal noise when adjusting the front and back slide of the seat. To provide a sliding anchor structure for a seat belt that can smoothly move back and forth without twisting. [Structure] An adjuster rail 20 that is long in the front-rear direction and has locking teeth 20d on the lower side is placed on the vehicle body floor part 5 on which the front-rear sliding seat 1 is installed, with the front end free and only the rear end connected. At the same time, the anchor 11a of the seat belt 11 is connected to the adjuster rail 20 during normal times.
The locking teeth 2 of the adjuster rail 20 can be slid forward and backward together with the seat 1, and when a strong tensile force diagonally upward and forward is applied from the seat belt 11 in the event of a collision, etc., the locking teeth 2 of the adjuster rail 20
This configuration includes a slider 30 that is prevented from moving by engaging with a locking pin 33c at 0d.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is mainly used for rear seats that are installed on the body of automobiles and other vehicles so that they can be slid back and forth. Sliding anchor for safety seat belts on cars, front seats, etc. Regarding structure.

0002

[Conventional technology]

Generally, the front seat (for the driver and assistant seat) is located inside the car body. and a rear seat are installed. In recent years, most of these sheets are sheet sliders. It is attached to the upper part of the car body floor via a card device, and the system can be adjusted to suit the physique and preferences of the occupant. It is a so-called sliding seat that allows you to adjust the position of the seat cushion in the front and rear directions. ing.

0003 The seat sliding device of the sliding seat is designed to move the seat onto the floor of the vehicle body. A pair of left and right seat adjusters are installed in parallel at the bottom of the seat cushion. For example, a long piece with a lip groove shape is fixed to the floor of the car body. Example of a lower rail and multiple rollers inserted into the lower rail so that it can move back and forth. For example, the upper rail is mainly composed of a long upper rail with a hat-shaped cross section. The seat cushion frame is fixedly supported on the upper rail. It is configured with a lock mechanism, and the upper can be released by operating the release lever of this lock mechanism. Move the rail back and forth relative to the lower rail to position the seat cushion in the desired position. Slide positioning can be adjusted.

0004 On the other hand, the above-mentioned seats are required to be fitted with seat belts to protect the safety of the occupants. It is. This seatbelt anchor is subject to excessive tensile force in the event of a collision, etc. Since the anchor is applied diagonally upward, the strength of the vehicle body should be increased to withstand this force. Generally, it is fixed directly to the floor part, which is a structural member. However, before In sliding seats that can be adjusted forward and backward as described above, the seat belt release is If you fix the car directly to the floor of the car, you may have to slide the seat back and forth midway. If the seatbelt does not follow suit, it may become too tight or become significantly loose. This causes various problems such as making the seated person feel uncomfortable or anxious.

[0005] For this purpose, the seat belt anchor is fixed to the seat cushion frame. A belt-in type sliding seat was considered, but it was simply a seat belt anchor. If the seat belt is fixed to the seat cushion frame, it will not be possible to remove it from the seat belt in the event of a collision. Excessive tensile force input from the seat cushion frame to the seat slide device The upper rail may come off from the lower rail and safety is compromised. Cannot be secured.

[0006] Therefore, in recent years, sliding seats have been designed with a sliding anchor structure for the seatbelt. has been adopted. This is located at the top of the car body floor under the sliding seat in the front and back direction. A long adjuster rail with multiple locking teeth on the lower side is attached to the floor at the front and rear ends. While it is connected and fixed, it is loosely fitted to this adjuster rail so that it can move back and forth. Attach a slider (anchor ledge) to the bottom of the seat cushion, and It has a structure in which the seat belt anchor is connected and fixed to the seat belt.

[0007] If this seatbelt has a sliding anchor structure, the seatbelt The slider with the anchor fixed is an adjuster together with the seat cushion during normal times. Since it can be moved back and forth against the rail, you can adjust the sliding seat by sliding it back and forth. Then, the slider and seatbelt follow suit and move back and forth, and the seatbelt is activated. Problems such as over-tightening or over-loosening of the grip will no longer occur. And in case of a collision When a strong pull is applied diagonally forward and upward from the seat belt to the slider via the anchor. When the slider is pulled up, the slider is pulled up. The lower part engages with the locking teeth on the lower side of the adjuster rail and is attached to the adjuster rail. Safety is ensured by ensuring that it is received.

[0008]

[Problem that the idea aims to solve] By the way, in modern cars, the interior space of the car is made as wide as possible to accommodate the occupants. The height of the seat cushion of the sliding seat has been adjusted to improve comfort. In order to make the Many efforts have been made to reduce the unit size. From this perspective, the aforementioned seatbelt Even in the slide-type anchoring structure, the adjuster rail and the The vertical height is minimized by designing the gap between the slider and the slider, which is movably fitted loosely, to be as small as possible. There has been a demand for a reduction in the size.

[0009] However, it is loosely fitted to the adjuster rail so that it can move back and forth. The slider and the slider are designed and manufactured so that the gap between them is extremely small, and the slider When assembling the seat to the car body, connect the adjuster rail to the car body floor at the front and rear ends. If the slider is attached to the bottom of the seat cushion and assembled, the adjuster The star rail has a fixed structure that supports both front and rear ends on the floor and there is no play, so the entire seat Due to errors in body assembly accuracy, etc., the slider may not be aligned properly with the adjuster rail. I have to move it back and forth along with the front and back slide adjustment of the seat cushion, but it is difficult to do so. The lower part of the slider is caught on the locking teeth on the lower side of the adjuster rail, making it smooth. The seat cushion cannot be moved forward and backward at will, and it is impossible to adjust the seat cushion forward and backward by pulling it. or the adjuster rail and slider may rub against each other and make an abnormal noise. There were some problems with my life.

0010 The present invention was developed in view of the above circumstances, and its first purpose is to -The gap between the rail and the slider that fits freely in the rail so that it can move back and forth is very small. Even if it is designed and manufactured in such a way that the slider will not fit into the seat cushion when the seat is assembled. With the front and rear slide adjustment, it can be smoothly adjusted without getting caught on the adjuster rail. A system that can move back and forth and does not cause any inconvenience when adjusting the seat cushion back and forth. The object of the present invention is to provide a slide-type anchoring structure for a seat belt.

[0011] The second purpose is to provide an adjuster rail in addition to the first purpose. A seatbelt that does not make any abnormal noise even when the seatbelt and slider rub against each other. The object of the present invention is to provide a sliding anchoring structure.

0012

[Means to solve the problem]

In order to achieve the first objective, the present invention has a system that can be slid in the front and back direction. On the floor of the car body where the seat is installed, there is a door that is long in the front and rear direction and has locking teeth on the bottom. While installing the caster rail, the seat belt anchor provided on the seat - are connected and can slide back and forth with the seat against the adjuster rail during normal times. In the event of a collision, a strong tensile force is applied diagonally forward and upward from the seatbelt. Then, the slider is engaged with the locking teeth of the adjuster rail and prevented from moving. In the slide type anchoring structure of the seat belt provided, the adjuster The front end of the rail is free, and only the rear end is connected to the vehicle floor. It is characterized by

[0013] In order to achieve the second object, the present invention provides a seatbelt with the above-mentioned structure. In the idle type anchoring structure, the adjuster rail is Even if the slider moves back and forth, it is covered with a thin synthetic resin coating with a low coefficient of friction. It is characterized by being

[0014]

[Effect]

According to the seat belt sliding anchor fastening structure of the present invention having the above configuration, the upper In order to reduce the lower height dimension, the adjuster rail can be moved forward and backward. Even if you design and manufacture a slider with a very small gap between them, it will not work. When assembling them together with the sliding seat on the upper part of the vehicle floor, the adjuster rail Instead of fixing both the front and rear ends as in the past, the front end is free, and only the rear end is attached to the floor of the vehicle. Since the slide sheet is connected to the parts and installed, there may be errors in the assembly accuracy of the entire slide sheet. However, the adjuster rail moves around the rear end side as a fulcrum and absorbs the error. There are no problems such as the slider getting caught on the locking teeth on the lower side of the adjuster rail. , the slider slides the seat cushion back and forth against the adjuster rail. With adjustment, you will be able to move back and forth smoothly. Also, in the unlikely event of a collision, When a strong tensile force is applied diagonally upward from the belt to the slider, this The lower side of the slider engages the locking teeth on the lower side of the adjuster rail. At this time, a Even if the front end of the juster rail is free, the rear end is connected to the vehicle floor, so the It reliably receives the strong diagonally upward pulling force input from the seat belt to the slider. This will prevent the slider from moving.

[0015] Further, the adjuster rail is arranged at least in the front and back of the slider in this longitudinal direction. The structure is such that the entire movement range is covered with a thin synthetic resin coating with a low coefficient of friction. If this happens, the slider may get caught on the locking teeth on the lower side of this adjuster rail. The seat cushion can be moved back and forth even more smoothly with the front and back slide adjustment. Not only does the adjuster rail and slider rub against each other, it also makes unpleasant noises. will no longer occur. In addition, in the event of a collision, the seat belt should be When a strong diagonal upward pulling force is applied to the slider, the lower part of this slider pushes away the thin synthetic resin coating on the adjuster rail and engages with the locking teeth on the lower side. movement will be blocked.

[0016]

【Example】

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7. In addition, here, in Figure 7 As shown, the seat belt of this invention is installed on a bench type rear seat 1 for 2 to 3 people. We will explain an example in which the slide type anchoring structure of It is also applicable to single-type front seats for passenger seats and auxiliary seats. Of course.

[0017] The bench type rear seat 1 shown in Fig. 7 is a horizontally long sofa-like seat. There is a separate left cushion installed on the rear of the upper surface with a slight backward tilt. It is composed of a right pair of seat backs 3. In addition, the seat back 3 is The seat cushion 2 can be rotated back and forth with the reclining device 4, making it easy to sit on the seat. You can choose the stand-up angle of your preference, or move it forward or backwards to a fully flat state. You can also defeat it.

[0018] In addition, the rear seat 1 is mounted on a seat floor section 5 on the vehicle body floor part 5 as shown in FIGS. 1 and 7. The so-called slide seat is installed so that it can be slid forward and backward via the ride device 6. It is. The seat slide device 6 includes a lower frame 2 of the seat cushion 2. A pair of left and right brackets are installed below a, each with a bracket on the vehicle floor 5. A long lower rail 8 in the shape of a lip groove whose front and rear ends are fixed via a joint 7, and this rod A cross-sectional frame that is slidably fitted to the array 8 through a plurality of rollers 9 (see Fig. 1) so as to be movable back and forth. The upper rail 10 is mainly composed of a long upper rail 10 with a flat shape. The lower frame 2a of the seat cushion 2 is fixedly supported on the top, and the upper - In a configuration equipped with a locking mechanism (not shown) for the rail 10, this locking mechanism can be released. By operating the lever, the upper rail 10 is moved back and forth relative to the lower rail 8, and the You can now slide and adjust the seat cushion 2 to the desired position front and back. There is.

[0019] Sit on the seat cushion 2 of the rear seat 1 that slides back and forth. There are three pairs of seat belts 11 with buckles that can be engaged and disengaged to protect the safety of passengers. It is equipped. The outermost left and right seat belts 11 are on the lower end side (not shown). The anchor is directly fixed to the floor, which is a strength member of the car body, with bolts, but The other two seat belts 11 on the inside have their lower ends connected to the seat cushion 2. The seat belt of the present invention is electrically connected to the lower side of the back surface through the gap between the seat backs 3. connected to a sliding anchor structure.

[0020] Here, the seatbelt sliding anchor fixing structure is attached to the seat belt. A pair of left and right panels are provided side by side on the vehicle body floor section 5 below the section 2. Each is an adjuster rail 20 and a loose member that can move back and forth with respect to this adjuster rail 20. It is mainly composed of a slider 30 to be fitted.

[0021] To further explain in detail with reference to FIGS. 1 to 5, the adjuster rail 20 is It is made of a long steel plate with an inverted L-shaped cross section, and an upper horizontal plate of the inverted L-shaped cross section. The portion 20a extends rearward in a gentle Z shape to form a rear end mounting flange portion 20b. has been completed. In addition, the adjuster rail 20 has a hanging plate portion 20 with an inverted L-shaped cross section. A plurality of locking teeth 20d are formed at equal pitches on the lower side of the rear half of the hole c. Moreover, this The adjuster rail 20 extends over approximately the entire length of its inverted L-shaped cross section (the locking teeth 20d (including the existing portion) is covered with a synthetic resin coating 21. This coating 21 is chlorinated. It has a low coefficient of friction and is made of synthetic resin such as vinyl into a hollow cylindrical shape like a sword sheath. It is thin and inserted into the adjuster rail 20 from the front end side so that it is in almost tight contact with the adjuster rail 20. It is fixed with a rivet 22 near the front end to prevent it from coming off. It is.

[0022] This adjuster rail 20 remains free on the front end side and has a horizontal rear end. Attach only the end mounting flange portion 20b to the floor portion 5 of the vehicle body with a washer 23 and a collar 24. The connection is achieved by vertically tightening the mounting bolt 26 through the spring seat 25. tied together. The adjuster rail 20 is now horizontal against external forces in the vertical direction. Elastic deformation of the rear end mounting flange portion 20b itself and mounting bolts via the spring seats 25. The tightening degree of 26 makes it possible to swing vertically and escape, and the vertical axis It can also be swung left and right around the mounting bolt 26 via the collar 24 to escape. It has become so.

[0023] Note that the rear end mounting flange portion 20b of the adjuster rail 20 is A pair of left and right rising plate portions 20e are formed so as to sandwich the bolt 26 therebetween. Moreover, a The rear end mounting flange portion 20b of the juster rail 20 is shown in FIGS. 5(a), (b), and (c). As shown in the figure, it is covered with a cover 27 made of a synthetic resin molded product and the design is maintained. It is. This cover 27 has rib-shaped projections 27a, 27b integrally molded on the inner surface. 27c, 27d, and 27e, which are the respective parts of the rear end mounting flange portion 20b. By making contact with the connector, it maintains the fitted state without moving or coming off unnecessarily. At the same time, conversely, the adjuster rail 20 sags downward due to its own weight. It is designed to moderate the movement and unnecessary swinging of the head in the left and right directions.

[0024] On the other hand, the slider 30 is a top-open box made of sheet metal, as shown in FIGS. 1 to 3. A shaped anchor ledge 31 and a plurality of caulking pins and rivets 32 on the lower surface It is composed of a substantially inverted hat-shaped U-shaped member 33 that is connected and fixed. that anchor The ledge 31 has a pair of left and right seats on the rear end upright plate 31a for connecting seat belt anchors. It has a weld nut 31b. The U-shaped member 33 is attached to the front end of this lower bottom plate portion 33a. It has a substantially Z-shaped tongue piece 33b that is one step higher and extends forward, and the bottom plate thereof. A locking pin 33c is provided at the rear end of the upper surface of the portion 33a, horizontally extending from side to side.

[0025] This slider 30 has a U-shaped member 33 on the lower side of the anchor ledge 31. It is possible to move forward and backward with a slight gap in both the vertical and horizontal directions relative to the adjuster rail 20. The front end of the upper anchor ledge 31 is placed in a loosely fitted state. is attached via a pivot pin 35 to the lower end of a support arm 34 protruding from the seat cushion 2. It is rotatably mounted and supported, and the seat cushion 2 can be adjusted by sliding back and forth. It is possible to follow the movement in the front and rear directions. The upper anchor of this slider 30 Connecting bolts are attached to the left and right pair of weld nuts 31b of the rear end upright plate 31a of the edge 31, respectively. By tightening the belt 35, the lower end anchor 11a of the seat belt 11 is connected and fixed. has been established. Note that the support arm 34 is attached to the inner frame of the seat cushion 2. Fit the upper end to the rear edge of the frame (pipe frame) 2b and protrude diagonally downward to the front. It is made of wide sheet metal.

[0026] Therefore, the sliding anchor structure of the seat belt of the present invention having the above-mentioned structure is To describe the function, the adjuster rail 2 is used to reduce the vertical height dimension. 0 and the slider 30, which can move back and forth, the gap between them is very small. Even if they are designed and manufactured in the same condition and assembled on the vehicle body floor part 5 together with the seat 1, the corresponding The adjuster rail 20 does not have both front and rear ends fixed, but has a free front end and a horizontal rear end. Only the mounting flange part 20b is connected to the vehicle body floor part 5 with the mounting bolts 26. Even if there is an error in the assembly accuracy of the entire seat 1, the adjuster rail will The slider 20 moves around the rear end side as a fulcrum and absorbs the error, and during normal times the slider The locking pin 33c and tongue piece 33b of the lower U-shaped member 33 of 30 are the adjuster rail. There is no problem such as getting caught on the lower locking tooth 20d of the slider 30. along with the front and back slide adjustment of the seat cushion 2 against the adjuster rail 20. You will be able to move back and forth smoothly. Moreover, at that time, the adjuster rail The lever 20 has a low friction coefficient at least over the longitudinal movement range of the slider. This adjuster is covered with a thin synthetic resin coating 21 such as vinyl chloride. The slider 30 is further caught on the locking teeth 20d on the lower side of the star rail 20. The slider 30 can move the seat cushion 2 even more smoothly. In addition to being able to move back and forth with the front and back slide adjustment, the adjuster rail 20 Even if the slider 30 and the slider 30 rub against each other, no unpleasant noise is generated.

[0027] In addition, in the event of a collision, a strong diagonal upward movement from the seat belt 11 can be applied. When a tensile force is applied to the slider 30, the pivot pin 35 is first moved from the state shown in FIG. The anchor ledge 31 of the slider 30 is tilted forward with the seat cushion 2. The slider 30 rotates upward, and the lower U-shaped member 33 of the slider 30 moves forward and upward. 6, the locking pin 33c is pulled up rapidly and the locking pin 33c is attached to the adjuster rail. The clothing 21 is pushed away and engaged with the nearest locking teeth 20d on the lower side of the clothing 20. At this time, the U-shape The lower tongue piece 33b of the member 33 comes into contact with the lower side of the adjuster rail 20 and the locking pin 33c acts as a guide to insert into the locking tooth 20d.

[0028] In this way, the locking pin 33c engages with the locking teeth 20d on the lower side of the adjuster rail 20. Then, due to the strong tensile force, the adjuster rail 20 is tilted forward and diagonally upward. The rear end mounting flange portion 20b, which was pulled in the direction and bent into an approximately Z shape, is shown in the figure. 6, but beyond that it is supported by the mounting bolt 26 and the above-mentioned seat is extended. To surely receive a strong tensile force input from a belt 11 to a slider 30. This ensures the safety of the occupants who are wearing the seat belts 11.

[0029] Next, another embodiment of the seat belt sliding anchor structure of the present invention is illustrated. This will be explained with reference to FIGS. 8 and 9. Here, a configuration corresponding to FIGS. 2 and 6 of the above embodiment is shown. Only this example is shown in the figure, and the other parts are omitted as they are substantially the same as those in the previous embodiment. First, 40 in the figure is an adjuster rail that is attached to the vehicle body floor 5 by connecting only the rear end. A slider 30 is loosely fitted therein so as to be movable back and forth. This slider 30 is Since it is the same as the example, the same reference numerals are given to simplify the explanation. Here, the adjuster rail 40 is made of steel having an inverted L-shaped cross section that is long in the front-rear direction. It is made of a plate, and its hanging plate part 40a with an inverted L-shaped cross section extends rearward and is oriented vertically. This is a rear end mounting flange portion 40b. In addition, the adjuster rail 4 A plurality of locking teeth 40d are formed at equal pitches on the lower side of the rear half of the hanging plate portion 40a of 0. At the same time, it covers almost the entire length of the inverted L-shaped cross section (the part where the locking teeth 40d are present). ) Covered with a thin synthetic resin coating 41 with a low coefficient of friction such as vinyl chloride .

[0030] The front end of the adjuster rail 40 remains free, and the rear end of the adjuster rail 40 is attached vertically. A U-shaped bracket 42 in which only the mounting flange portion 40b is fixed on the floor surface portion 5 of the vehicle body. A mounting pin 43 on the horizontal axis, a pair of collars 44 on the left and right, and a wave washer 45 are connected via. The adjuster rail 40 is now subject to external force in the vertical direction. On the other hand, the rear end mounting flange portion 40b extends vertically around the mounting pin 43 on the horizontal axis. In addition to being able to swing and escape, the left and right wave washers 45 It is also possible to escape by swinging its head in any direction. This has the same effect as the previous example. effect will be obtained.

[0031]

[Effect of the idea]

The seat belt sliding anchor fixing structure of the present invention is constructed as described above. From there, the adjuster rail and the slider that is loosely fitted to the adjuster rail so that it can move back and forth are mutually connected. Even if the gap is designed and manufactured to be extremely small, the slider will not move when the seat is assembled. It got caught on the adjuster rail while adjusting the seat cushion's front and back slide. The seat cushion can be moved back and forth smoothly without making any noise. There will be no inconvenience in adjusting the front and rear slides.

[Brief explanation of drawings]

FIG. 1 is a partially sectional side view showing an embodiment of the seat belt sliding anchor structure of the present invention in a seat assembled state.

FIGS. 2(a) and 2(b) are a plan view and a side view showing an adjuster rail and a slider of the seatbelt sliding anchor structure according to the above embodiment;

FIG. 3 is a rear end view taken along line AA in FIG. 2;

FIG. 4 is a sectional view taken along line BB in FIG. 2;

5(a) is a plan view showing a cover of the rear end connecting portion of the adjuster rail, FIG. 5(b) is a side view thereof, and FIG. 5(c) is a sectional view taken along line DD in FIG. 5(b).

FIG. 6 is a side view showing the action of the adjuster rail and slider of the above embodiment at the time of a vehicle collision accident.

FIG. 7 is a perspective view of the entire sheet of the embodiment.

8(a) and (b) are a plan view and a side view of an adjuster rail and a slider showing another embodiment of the seat belt sliding anchoring structure of the present invention; FIG.

FIG. 9 is a side view showing the action of the adjuster rail and slider of the above embodiment at the time of a vehicle collision accident.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1...Seat, 2...Seat cushion, 6...Seat slide device, 6...Vehicle body floor part, 11...Seat belt, 11a
...Anchor, 20,40...Adjuster rail, 20d,
40d...locking tooth, 30...slider, 33c...lower side part (locking pin).

Claims (2)

[Scope of utility model registration request] 1. An adjuster rail that is long in the longitudinal direction and has locking teeth on the lower side is attached to the upper part of the floor of a vehicle body in which a seat is installed so as to be slidably adjustable in the longitudinal direction, and a seat provided on the seat. The belt anchor is connected and can slide back and forth with the seat against the adjuster rail during normal times, and when a strong diagonally upward pulling force is applied from the seatbelt in the event of a collision, etc., it engages with the locking teeth of the adjuster rail. A sliding anchor structure for a seat belt provided with a slider that prevents movement, wherein the adjuster rail has a front end free and only a rear end connected to the floor surface of the vehicle body. Sliding anchor structure. 2. In the seat belt sliding anchoring structure according to claim 1, the adjuster rail comprises:
A sliding anchor structure for a seat belt, characterized in that at least the longitudinal movement range of the slider is covered with a thin synthetic resin coating having a low coefficient of friction.