JPS6288641A - Seatbelt anchor device - Google Patents

Abstract

PURPOSE:To facilitate section of the fixing position in a car body by pressing an operating member from the sideface and moving a stopper pin in the perpendicular direction against the pressing direction thereby improving the operationability while enabling removal of the stopper pin with a small force. CONSTITUTION:An operating member 24 is projected in the inserting/removing direction of a stopper pin 17 to make at least one side of the pressing section 24a on the sideface rockable through pressing. While a removing mechanism is constructed such that the stopper pin 17 is movable against an energizing spring 20 in the perpendicular direction against the pressing direction upon pressing of the operating member 24. Consequently, adjusting of the vertical fixing position of a slip anchor 13 for supporting the intermediate section of a seatbelt while inserting against the center pillar of the body is performed by picking and pressing the pressing section 24a of the operating member 24 and removing the stopper pin 17 from a stop hole 2 of a rail member 1 then inserting into a stop hole 2 at predetermined position while fitting of the stopper pin 17 is performed automatically upon release of pressing.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a device for inserting and supporting the shoulder portion of a vehicle seat belt attached to an automobile, etc. in a height-adjustable manner. This invention relates to a seat belt anchor device that has improved its performance.

(Prior art) Among the seat belt devices installed in automobiles, etc., those that use a joint belt that can be used for both the waist and the waist are designed to accurately fit the shoulder area of the occupant according to the occupant's sitting height and physique. In order to attach a seatbelt, a seatbelt anchor device is used in which a slip anchor, through which the middle portion of the seatbelt is inserted and supported, is attached to the center pillar of the vehicle body so that its mounting position can be adjusted vertically.

By the way, this type of conventional seat belt anchor device is
In general, a slip anchor for inserting and guiding a seat belt is connected to a vertically long rail member fixed to the vehicle body such as a center and rail.The slide anchor can be retracted from the back side of the anchor, and is always protruded by a temporary spring. In addition to providing a locking pin that is integrated with the operation knob that is biased in the direction,
The rail member is provided with a plurality of locking holes along its longitudinal direction into which the tip of the locking pin can be inserted and removed. By pulling out the locking pin from the locking hole of the rail member, the slide anchor can be moved up and down freely, and its height can be adjusted by a wheel-like operation. (For example, see Japanese Utility Model Publication No. 59-929.) As described above, in the conventional seat belt anchor device in which the slide anchor is positioned by inserting a locking pin into the locking hole of the rail member, the locking In addition to the method of inserting and removing the pin by pulling the operation knob as described above,
A method has been put into practical use in which both ends of a leaf spring or the like are locked to a guide rail, and a locking pin is pulled out in the same direction as the pressing force by operating the spring.

(Problems to be Solved by the Invention) However, in the conventional operation method as described above, when a large impact load is applied to the seat belt in an emergency such as a vehicle collision, the seat belt load is transferred to the rail member. The focus is on the locking pin that connects the slide anchor and the slide anchor, and the locking pin is pulled out of the locking hole due to deflection of the rail member itself or deformation of the attachment part of the locking pin to the slide anchor, and the slide anchor and slip anchor are Not only is there a risk of the seatbelt loosening due to the seatbelt moving downward unexpectedly, but it also lacks operability as it must be pulled out each time it is operated. The same goes for pulling out the locking pin; in this case as well, the problem in an emergency situation is not resolved.Moreover, since the locking pin is pulled out in the same direction as the pressing direction, the pressing force is directly applied.
A relatively large operating force was required as a pulling force.

The present invention addresses the problems of the conventional seat belt anchor devices, and specifically aims to improve operability.The present invention solves the above problems by making it relatively easy to operate with a knob operation and by making it easy to insert and remove the locking pin. This is what we are trying to solve.

(Means for Solving the Problems) Therefore, in the device of the present invention that is suitable for solving the above problems, firstly, a vertically long rail member fixed to the vehicle body has a plurality of locking holes along its longitudinal direction. A slide anchor is attached to the rail member so as to be movable in the longitudinal direction.

The slide anchor has a locking pin that can be freely inserted into and removed from the locking hole of the rail member and that is always biased by a spring in the locking hole insertion direction. In a seat belt anchor device that is attached to slide, the pressing direction of the operating member that operates the insertion and removal of the locking pin and the insertion and removal direction of the locking pin are basically perpendicular to each other. An operating member is provided on the head of the locking pin that protrudes in the locking pin insertion/removal direction, a pressing portion is formed on the side surface, and at least one side of the locking pin is swingable when pressed. An ejection mechanism is disposed between the operating member locking pins so that the locking pins can be moved against the biasing spring in a direction perpendicular to the pressing direction.

Here, various designs may be adopted for the ejection mechanism, such as one using a spring as an element and one using a link as an element, as long as the purpose is not deviated from.

However, all of these are disposed between the pressing part of the operating member and the locking pin component, and the locking pin is moved in the extraction direction by the pressure of the pressing part.

(Function) Thus, in the device of the present invention, when the pressing portion of the operating member is pressed, the locking pin is pressed by the action of the spring, link mechanism, or cam member disposed between the pressing portion and the locking pin. is transferred to the extraction direction perpendicular to the pressing direction and is easily extracted.

Therefore, when trying to adjust the position of the slip anchor, which inserts and supports the middle part of the seat belt, into the center pillar of the vehicle body, depending on the sitting height and physique of the occupant, pinch the pressing part of the operating member and press it. By doing so, adjustment can be made by pulling out the locking pin from the locking hole of the rail member and fitting it into the locking hole at a desired position.

Note that the locking pin is generally biased by a spring in the direction of insertion into the locking hole, so that after the locking pin is inserted into the locking hole, when the pressure of the pressing portion of the operating member is released, the locking pin is automatically inserted.

(Example) The present invention will be described in detail below with further reference to the accompanying drawings.

FIG. 1 is a side sectional view showing an example of a seat belt anchor device according to the present invention, FIG. 2 is a front view of the same device, and FIG. 3 is a partial sectional view showing an operating portion thereof.

In these figures, (1) is a vertically long belt-shaped thick metal plate that is press-molded into the desired cross-sectional shape with flanges on both sides.
A rail member that provides the required bending rigidity and has a plurality of locking holes (2) drilled along the longitudinal direction, the rail member (1) having holes drilled at its upper and lower ends. Mounting hole (31, (mounting bolt (4) inserted through 3i, <6
By screwing it onto the vehicle body (6) such as the center pillar through the washers (5) and (5), the required gap (1) is created between the back of the rail member and the mounting surface on the vehicle body (6) side. It is interposed and firmly fixed.

Moreover, the above-mentioned rail member (1) has each of the above-mentioned locking holes (2).
The front opening of each locking hole (2) has an inclined guide surface (7) that facilitates the insertion and removal of a locking pin (17), which will be described later. The opening periphery (8) of the locking hole (2) is slightly recessed from the back side of the rail member by pressing 1) from the back side of the rail member (1), and the actual depth of each locking hole (2) is adjusted from the rail member (1). ) is constant regardless of the plate thickness, and the corners of the opening periphery (8) are designed to form approximately right-angled edges.

(9) While gripping the flanges on both sides of the rail member (1) via a sheet for reducing frictional force, the rail member (1)
) is a slide anchor made of a metal plate slidably attached in the longitudinal direction, the slide anchor (9)
The base part (14) of a slip anchor (13) that slidably guides the shoulder part of the seat belt (B) with a slip ring (12) is attached to the base part (14) fixed to the lower half of the seat belt (B).
) (15) that rotatably supports the slide anchor (9), and a sleeve-shaped locking pin guide tube (16) is fixed to the upper half of the slide anchor (9). A cylindrical locking pin (17) is slidably inserted into the guide tube (16) in a direction perpendicular to the moving direction of the slide anchor (9), and the locking pin (17) , the intermediate step part (18) and the spring bearing of the guide tube (16) are part (
The rail member (1) is always biased in the direction of fitting into the locking hole (2) of the rail member (1) by a biasing spring (20) consisting of a coil spring contracted between the rail member (1) and the biasing spring (20).

(21) is the upper part of the guide tube (16) and the locking pin (17).
) is a pin cap fitted around the outer periphery of the head (22) of the guide tube (16), and is integrally provided with a skirt portion that covers the outer circumferential surface of the guide tube (16), and is an operating member held in the case (23). (24) and is housed inside it.

The locking pin (17) leaves a required length of the retaining portion (25) in the portion that fits into the locking hole (2) of the rail member (1), and at least extends the locking portion (25) inwardly.
) has a width larger than the depth of the locking hole (2) of the groove (26
) is provided around the circumference, and the locking hole (
A retaining step (27) is formed opposite to the opening periphery (8) of 2) and capable of being locked to the opening periphery (8).

Note that (28) is the groove (26) of the locking pin (17).
A cylindrical resin material (28) is installed inside the belt, and the resin material (28) does not deform under stress during normal use of the belt.
It begins when a shock load of more than a specified value is applied to the belt.
It is pushed by the inner surface of the locking hole (2) and deforms or breaks, and the locking step (27) of the locking pin (17) locks with the opening periphery (8) of the locking hole (2). Usually, a cylindrical piece with a slit formed in the axial direction is prepared, and this is inserted into the groove (26) of the locking pin (17) using its own elastic force. Fit and assemble, or
Insert the locking pin (17) into the resin molding mold, and fit the groove (26
) may be directly filled with a resin material and molded, or a resin material (28) having a shape that matches the groove (26) may be adhered to the locking pin (17).

As such a resin material, any resin that satisfies the above-mentioned mechanical performance can be used, but polyacecool resin, polyester resin, etc. are usually suitable.

The outer circumferential surface of the resin material (28) is substantially flush with the outer circumferential surface of the locking pin (17), and the locking pin (17) is inserted into and removed from the locking hole (2). Care has been taken to ensure that it does not get in the way.

In the figure, (29) is fixed to the front of the slide anchor (9), and the rail member +1) and the slide anchor (9)
It is a cover to cover up.

The present invention particularly applies to the locking pin (
17) has an important feature in the operation part that inserts and removes the
The details will be further explained below.

First, FIGS. 3 to 5 relate to one of the most typical embodiments, in which the locking pin (17) is connected to the pin guide tube (16).
) is slidably penetrated so that its head (22) protrudes above the pin cap (21), and is locked to the pin cap (21) by a locking part (31) formed on the head (22). In addition to being held, the pin cap (21) is formed with a shaft part (30) extending perpendicularly to the direction of insertion and removal of the locking pin, that is, protruding laterally, and each end of the shaft part (30) is open in a V-shape. A coil spring (32) is fitted, the free end of which is connected to the pressing part (2).
4a) is engaged with a spring engagement portion (33) provided on the inner surface of the algae cultivation member (24).

The operating member (24) is usually the head of the locking pin (17) of a locking pin assembly structure in which the locking pin (17), the pin guide tube (16), and the pin cap (21) are assembled together. That is, it is held in the case (23) so as to cover the pin cap (21) from the side, and is composed of a pair of members facing each other and extending in the same direction as the insertion/removal direction of the locking pin (17). The side surface is a pressing part (24a
).

The pair of members are each pivoted (34) on the lower end side and can be rotated about the pivot part (34) by pressing, and the pin guide cylinder (34) of the locking pin assembly structure 16) Retainer attached to the outer periphery (
The lower part is supported by 35).

Therefore, when pressing the pressing part (24a) of the operating member (24) inward, both open end parts of the coil spring (32) are pressed inward, and the coil part has no escape and the shaft part (
30) and move upward in FIG. 3, and simultaneously move the locking pin (17) supported by the locking part (31) of the pin cap (21) to insert the locking pin (17) into the locking hole. (2) Easier removal.

FIGS. 6 and 7 show a case where a chevron-shaped thin leaf spring (32A) with both ends open is used instead of the coil spring (32) as a modification of the above embodiment, and its basic configuration is the same as that of the above embodiment. Although there is almost no difference compared to the thin plate spring (32A)
has a recess (36) in the middle of the mountain, and the recess (36)
The shaft portion (
30) has been accepted.

Note that although the case that holds the operating member (24) is omitted in the figure, it goes without saying that the operating member (24) can be held by the case.

Also in this embodiment, by pressing the pressing portion (24a) of the operating member (24), the thin plate spring (32
A) moves the shaft part (30) upward in FIG.
Remove the locking pin (17) from the locking hole.

FIGS. 8 and 9 show modified embodiments in which the manner of use of the coil spring is further different, in which both open ends of a dogleg-shaped or inverted dogleg-shaped coil spring (32B) with both ends open are The upper side of the locking pin (not shown) is locked to a spring stopper (37) provided on the pin cap, for example, and the other side is fixed to a retainer (35), etc., which protrudes in a dogleg shape at the middle part. The coil part is pressed against the pressing part (24) of the operating member (24).
a) When the pressing part (24a) is pressed by coming into contact with the inner surface, the pin cap (21) etc. are moved and the locking pin can be removed.

10 and 11 use a link mechanism instead of the spring or thin plate spring described above, and in FIG. 10, one end of each is pivotally connected to the shaft (30) of the pin cap (21), and the other The ends of the link members (38a) and (38b) are fixed to the operating member (24), and the pair of link members (38a) and (38b) are formed into a mountain shape, and the pivot portion of the shaft portion (30) is used as a mountain height portion.

On the other hand, in FIG. 11, a pair of chevron-shaped link mechanisms (38c) (38d) with joints in the center and open at both ends are used, and each joint, which is a chevron in the middle, is connected to the pressing part (24) of the operating member (24).
24A) It is constructed by abutting on the inner surface and fixing the open end to the pin cap (21) on the upper side and the retainer (35) etc. on the lower side.

Those using these link mechanisms also have respective pressing parts (24a
), the pin cap (21) is moved upward in the figure by the joint action, and the locking pin is released from the locking hole.

Next, in FIGS. 12 and 13, a cam is further used to release the locking pin, and both of them use the operating member (24
cam members (39a) that partially overlap with each other on the inner surface of the pressing part (24a) of ), the degree of polymerization is variable by pressing, and a cam part is formed on the upper surface of the overlapping part (39a);
b) , (40a) and (40b) are provided, and the shaft part (30) of the pin cap (21) is received and supported on the upper surface of the overlapping part.

In this case, in FIG. 12, the operating member (24) rotates around the pivot part (34) and the locking pin is removed by movement of the pin cap (21), but in FIG. '4) slides, allowing the locking pin to be removed.

In the case of using this cam member, it is possible to provide a smooth locking pin extraction/removal action depending on the design of the cam member even if the operating member is pressed from one side rather than necessarily from both sides.

Of course, it goes without saying that one-sided pressing is also possible in each of the above cases.

Although each embodiment of the locking pin insertion/removal mechanism has been shown above,
It will be easily understood that the present invention is not limited to this, and that design modifications are allowed as long as they do not deviate from the purpose.

In addition, in the explanation of each figure, the reference numerals in each figure are omitted, but the same reference numerals indicate the same parts.

The seat belt anchor device of the present invention has the above-mentioned configuration, and its operation will be explained next. First, when the seat belt is worn normally, the height of the slip anchor (13) is adjusted to match the physique of the occupant. When moving the slide anchor (9) up and down, use the operating member (
Press the pressing part (24a) of 24) and lock the locking pin (17).
If the slide anchor (9) is removed from the locking hole (2) of the rail member (1), the slide anchor (9) becomes movable along the rail member (1), so move the slide anchor (9) to the desired position. the pressing part (24a) of the operating member (24).
), the locking pin (17) will release the biasing spring (2).
The slide anchor (9) is automatically fitted into the locking hole (2) by the biasing force of 0), and the slide anchor (9) is positioned to hold the slip anchor (13) at a predetermined height.

In addition, at this time, the resin material (28) in the above embodiment provided on the locking pin (17) is
It does not deform at all under the stress of normal use, and the locking pin (17
) is located at the opening periphery (8) of the locking hole (2).
This prevents the locking pin (17
) to facilitate the insertion and removal operation of the locking pin (17).
) Mitigates the collision between the outer surface and the inner surface of the locking hole (2) to prevent abnormal noises caused by vibrations when the vehicle is running.

In addition, when the slide anchor (9) is fixed as described above, if an impact load of more than a specified value is applied to the seat belt (B) due to a vehicle collision, etc., generally a load of 200 kg to 3 tons, the slip anchor (13) A load in the direction perpendicular to the axis is applied to the locking pin (17) via the slide anchor (9), and the resin material (28) is pushed into the locking hole (
The locking step (27) of the locking pin (17) locks on the opening periphery (li f8) of the locking hole (2). 2), the locking pin (17) is prevented from being removed from the seat belt (B), the connection strength between the two is greatly increased, the slide anchor (9) is prevented from slipping down, and the occupant is restrained by the seat belt (B). It will be held properly.

In the above embodiment, a slip anchor is used as the seatbelt support member, and the seatbelt (B) is inserted through the shoulder of the seatbelt (B) and turned. However, the anchor device of the present invention It can also be applied to connecting a buckle to the vehicle body above so that its vertical position can be adjusted; in this case, a buckle is attached instead of a slip anchor, and a tongue sewn to the tip of the seat belt can be attached to and detached from the buckle. possible to be connected.

(Effects of the Invention) As described above, in the device of the present invention, the operating member is pressed from the side, and the locking pin is moved in a direction perpendicular to the pressing direction by the pressing. , unlike the conventional pulling operation or pulling in the direction of pressure using spring pressure, the locking pin can be removed by simply pressing the side, and the seat belt anchor position can be adjusted to an appropriate position according to the body physique, etc. can be moved,
The operability is extremely good, and since the pressing direction and the movement direction for removing and removing the locking pin are directions perpendicular to each other, the use of pressing force is effective, and the locking pin can be removed and removed with relatively little force. Furthermore, when installing the device of the present invention in the vehicle body, it is easy to select the mounting location, and it has a much superior practical effect compared to conventional devices.

Furthermore, by providing a resin material on the portion where the cross section of the locking pin is small, this reduces the collision between the locking pin and the locking hole, thereby facilitating the insertion and removal operation between the locking pin and the locking hole. (Even if the opening area of the locking hole is made thicker,
It can also be expected to have the effect of preventing abnormal noises caused by rattling of the locking pin due to vibrations when the vehicle is running.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing an example of a seat belt anchor device according to the present invention, FIG. 2 is a front view of the same anchor device, and FIG.
The figure is an enlarged view of the operating section in FIG. 2, with the right half showing a cross section and the left half showing a case where the position has been changed by 90 degrees. 4 is a perspective view of the operating member in FIG. 3, and FIG. 5 is an exploded view of the operating portion in FIG. 3. FIG. 6 is a cross-sectional view of main parts showing another embodiment of the operating section of the seat belt anchor device of the present invention;
The figure is a perspective view of the thin leaf spring. Further, FIG. 8 is a partially sectional explanatory view showing the main part of another modified embodiment of the device of the present invention, FIG. 9 is a perspective view of a spring used in FIG. 8, and FIG. 10. FIG. 11, FIG. 12, and FIG. 13 are all schematic explanatory diagrams of main parts showing modified embodiments of the operating section in the device of the present invention. (1)...Rail member, (2)...Latching hole (6
)...Vehicle body, (9)...Slide anchor. (13) Seat belt support member. (17)... Locking pin, (20)... Biasing spring. (21)...Pin cap. (22)...Head of the locking pin. (24)...Operation member, (24a)...Press portion. (30)...Shaft part, (32) (32B) ・
·spring. (32A) ... thin plate spring, (36) ... recessed part of thin plate spring. (38a) (38b) (38C) (38d)... link member. (39a) (39b) (40a) (40b)...Cam member. (B) ... Seat belt. Rod 3 times rod qri: U bed day

Claims (1)

[Claims] 1. A slide anchor is attached movably along the longitudinal direction of a vertically elongated rail member fixed to the vehicle body and having a plurality of locking holes drilled along the longitudinal direction; A seatbelt support member is attached to the slide anchor, and the slide anchor is capable of being inserted into and removed from the locking hole of the rail member orthogonally to the moving direction of the slide anchor, and in the direction of insertion into the locking hole. In a seat belt anchor device including a spring-biased locking pin, the head of the locking pin is provided to protrude in the insertion/removal direction of the locking pin, and a pressing portion is formed on the side surface of the locking pin, and An extraction mechanism is provided, comprising an operation member made of a member at least on one side of which is movable by pressure, and which extracts and moves the locking pin in a direction perpendicular to the pressing direction by pressure of the operation member against the biasing spring. A seat belt anchor device, characterized in that the device is installed between the operating member and the locking pin. 2. The locking pin has an engaging stepped portion inwardly leaving a required length at the tip of the locking hole, and a portion where the cross section becomes smaller continuously from the stepped portion. is provided, and
A resin material that deforms only when a predetermined load or more is applied to the seat belt and allows the engagement step to be engaged with the periphery of the engagement hole opening is attached to the portion with a small cross section. A seat belt anchor device according to claim 1. 3. The extracting/extracting mechanism uses a coil spring with both ends open, and the coil spring is attached to a shaft portion formed protruding orthogonally to the insertion/removal direction of the locking pin from a pin cap fitted on the upper part of the locking pin. , which is formed by locking its open end to the pressing portion of the operating member.
The seat belt anchor device according to item 1 or 2. 4. The extracting mechanism uses a chevron-shaped thin plate spring with both ends open as an element, and the shaft portion protruding perpendicularly to the locking pin insertion/removal direction is attached to the pin cap fitted on the top of the locking pin. 3. The seat belt anchor device according to claim 1, wherein the seat belt anchor device is received in a recess formed in the middle of the mountain portion of the seat belt anchor device, and the open end of the seat belt anchor device is received by a concave portion formed in the middle of the peak portion of the seat belt anchor device. 5. The extraction mechanism uses a coil spring with both ends open, and the open ends of the coil spring are respectively locked to the upper and lower parts of the locking pin, so that the coil part protrudes in the middle in a dogleg shape or an inverted dogleg shape. The seat belt anchor device according to claim 1 or 2, wherein the protruding coil portion is brought into contact with the inner surface of the pressing portion of the operating member. 6. The ejection mechanism consists of a chevron-shaped link mechanism with both ends open, and its intermediate peak is a shaft formed protruding from the pin cap fitted on the upper part of the locking pin, perpendicular to the direction of insertion and removal of the locking pin. Claim 1 or 2, which is constructed by attaching the operating member to the operating member and locking the open end to the pressing part of the operating member.
Seat belt anchor device as described in Section 1. 7. The ejection mechanism uses a chevron-shaped link mechanism with both ends open,
Claim 1 or 2, wherein the intermediate mountain portion is in contact with the inner surface of the pressing portion of the operating member, and the open end is locked with the upper and lower portions of the locking pin, respectively. seat belt anchor device. 8. The ejection mechanism includes a cam member that partially overlaps the pressing portions of the operating member facing each other, and forms a cam portion on the upper surface of the overlapping portion, which is provided so that the degree of polymerization can be changed by pressing, and locks. Claim 1, wherein the cam part of the cam member receives a shaft part formed protruding orthogonally to the locking pin insertion/removal direction from a pin cap fitted on the upper part of the pin. The seat belt anchor device according to item 1 or 2.