JPH0554461B2 - - Google Patents

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 for both shoulder and waist use are
In order to accurately attach the seat belt to the occupant's shoulders, a seat belt anchor device is used in which the slip anchor, which inserts and supports the middle part of the seat belt, is attached to the center pillar of the vehicle body so that its mounting position can be adjusted up and down. There is.

By the way, this type of conventional seatbelt anchor device generally has a slide anchor connected to a vertically long rail member fixed to the vehicle body such as a center pillar, and a slip anchor for inserting and guiding the seatbelt. It is possible to appear,
and a locking pin integrated with the operation knob that is always urged in the protruding direction by a leaf spring, and a plurality of locking stages in which the tip of the locking pin can be inserted into and removed from the rail member along its longitudinal direction. A hole is drilled therein, and the slide anchor can be moved up and down freely by pulling and pulling the operating knob as necessary and pulling out the locking pin integrated with the locking pin from the locking hole of the rail member. Its height can be adjusted with a simple operation. (for example,
(Refer to 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 the locking pin into the locking hole of the rail member, the locking pin is inserted into the locking hole. In addition to the method of pulling the operating knob as described above, the release operation method has been put into practical use by locking both ends of a leaf spring, etc. to the guide rail, and pulling out the locking pin in the same direction as the pressing direction by operating the spring. There is.

(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 seatbelt in an emergency such as a vehicle collision, the load on the seatbelt is The focus is on the locking pin that connects the rail member 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 Not only is there a risk of the anchor suddenly moving downward and loosening the seatbelt, but it also has to be pulled out each time it is operated, resulting in a lack of operability. The same goes for pulling out the locking pin; in this case as well, the problem in an emergency situation is not solved.Moreover, since the locking pin is pulled out in the same direction as the pressing direction, the pressing force directly becomes the pulling force, making it relatively Great operating power was required.

The present invention addresses the problems of conventional seat belt anchor devices, and specifically aims to improve operability by making it relatively easy to operate with a knob operation.
It is an object of the present invention to solve the above problem by making insertion and removal of the locking pin simple and easy.

(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, in which a belt support member such as a slip anchor for inserting and supporting a seat belt is attached, 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/removal of the locking pin and the insertion/removal direction of the locking pin are basically perpendicular to each other. The disengagement means of the slide anchor that pulls out and moves the locking pin from the locking hole of the rail member against the spring bias has a pressing part formed on the side surface, and at least one side of the operating member is swingable by pressing. An external device is provided, and an ejection mechanism is provided between the operating member locking pins so that the locking pins can be moved in a direction perpendicular to the pressing direction by pressing the operating member against a biasing spring. be.

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 attempting to adjust the vertical mounting position of the slip anchor, which inserts and supports the middle portion of the seat belt, to the center pillar of the vehicle body according to the sitting height and physique of the occupant, the pressing portion of the operating member must be pinched and pressed. The adjustment can be made by pulling out the locking pin from the locking hole of the rail member and inserting it into the locking hole at the desired position.

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

(Embodiments) Hereinafter, embodiments of the present invention will be described 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 required cross-sectional shape with flanges on both sides to provide the required bending rigidity, and a plurality of locking holes 2 along the longitudinal direction. The rail member 1 has mounting bolts 4, 4' inserted through mounting holes 3, 3' drilled at the upper and lower ends of the rail member 1 through washers 5, 5'. By screwing it onto the vehicle body 6 such as a center pillar, it is firmly fixed with a required gap t interposed between the back surface of the rail member and the mounting surface on the vehicle body 6 side.

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. By doing so, the locking hole 2
The opening periphery 8 is slightly recessed from the back surface of the rail member, so that the actual depth of each locking hole 2 is constant regardless of the plate thickness of the rail member 1, and the corners of the opening periphery 8 are approximately at right angles. It is considered to form an edge of

9 is a slide anchor made of a metal plate that is slidably attached to the rail member 1 in the longitudinal direction while gripping the flanges on both side edges of the rail member 1 via a sheet for reducing frictional force, The nut 11 fixed to the lower half of the slide anchor 9 has a
A bolt 15 rotatably supports a base portion 14 of a slip anchor 13 that slidably guides the shoulder portion of the seat belt B by a slip ring 12, and a bolt 15 is screwed onto the upper half of the slide anchor 9. A sleeve-shaped locking pin guide tube 16 is fixed, and a cylindrical locking pin 17 is slidably inserted in the guide tube 16 in a direction perpendicular to the moving direction of the slide anchor 9. The locking pin 17 is always kept in the locking hole 2 of the rail member 1 by a biasing spring 20 consisting of a coil spring compressed between the intermediate stage portion 18 and the spring receiving portion 19 of the guide tube 16. The spring is biased in the direction of insertion.

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

The locking pin 17 leaves a required length of the locking portion 25 in the portion to be fitted into the locking hole 2 of the rail member 1, and has a depth at least greater than the depth of the locking hole 2 of the rail member 1 toward the inside. Groove 26 having a width
is provided around the groove 26, and the locking hole 2 is provided at the end of the groove 26.
An engaging step portion 27 is formed opposite to the opening periphery 8 and capable of being engaged with the opening periphery 8 .

Note that 28 is a cylindrical resin material installed in the groove 26 of the locking pin 17, and the resin material 28 does not deform under stress during normal use of the belt, and does not cause the belt to exceed a predetermined level. It is only when an impact load is applied that the locking pin 17 is pushed against the inner surface of the locking hole 2 and deformed or destroyed, and the locking step 27 of the locking pin 17 locks with the opening periphery 8 of the locking hole 2. A cylindrical piece with permissible rigidity and usually a slit formed in the axial direction is prepared, and this is assembled by attaching it to the groove 26 of the locking pin 17 using its own elastic force. Alternatively, the locking pin 17 is inserted into a resin molding die, and the groove 26 is directly filled with resin material and molded, or a resin material 28 having a shape that matches the groove 26 is attached to the locking pin 17. It can be assembled by doing the following.

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

The outer circumferential surface of the resin material 28 has a shape that is substantially flush with the outer circumferential surface of the locking pin 17, and is designed to prevent the locking pin 17 from getting in the way when the locking pin 17 is inserted into and removed from the locking hole 2. ing.

In the figure, 29 is a cover fixed to the front surface of the slide anchor 9 for covering the rail member 1 and the slide anchor 9.

The present invention has an important feature in the configuration as described above, particularly in the operation section for inserting and removing the locking pin 17, and the details thereof will be explained below.

First, FIGS. 3 to 5 relate to one of the most typical embodiments, in which the locking pin 17 slidably passes through the pin guide tube 16 and its head 22 projects above the pin cap 21. The pin cap 21 is locked and held by a locking portion 31 formed on the head 22, and a shaft portion 30 is formed on the pin cap 21 so as to extend perpendicularly to the locking pin insertion/removal direction, that is, to protrude laterally. A central head coil portion of a coil spring 32 with both ends opened in a V-shape is fitted into this, and the open end is connected to a spring engagement provided on the inner surface of the operating member 24 having a pressing portion 24a. It is locked by a stopper 33.

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, pin guide cylinder 16, and pin cap 21 are assembled together, that is,
It is held in the case 23 so as to cover the pin cap 21 part from the side, and the locking pin 17
It is composed of a pair of members facing each other and extending in the same direction as the insertion/removal direction of the press part 24.
It becomes a.

The pair of members are each pivoted at the lower end side, and the pivot portion 34 is pivoted by pressing.
The lower part is supported by a retainer 35 attached to the outer periphery of the pin guide tube 16 of the locking pin assembly structure.

Therefore, when pressing the pressing portion 24a of the operating member 24 inward, both open end portions of the coil spring 32 are pressed inward, and the coil portion has no escape and moves upwardly in FIG. 3 together with the shaft portion 30. transition,
The locking pin 17 supported by the locking portion 31 of the pin cap 21 is moved at the same time, and the locking pin 17 is easily removed from the locking hole 2.

FIGS. 6 and 7 show a modification of the above embodiment in which a chevron-shaped thin plate spring 32A with open ends is used instead of the coil spring 32, and its basic configuration is almost the same as that of the above embodiment. There is no difference, but
The thin plate spring 32A has a recess 36 at the top of its mountain, and the shaft 30 protruding laterally of the pin cap 21 is received by the recess 36.

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, the operating member 24
By pressing the pressing portion 24a, the thin plate spring 32A moves the shaft portion 30 upward in FIG. 6, and the locking pin 17 is pulled out 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 dog-shaped coil spring 32B are open at both ends, and one is locked. The upper side of the pin (not shown) is engaged with a spring stop 37 provided on the pin cap, for example, and the other side is engaged with a retainer 35.
When the pressing part 24a is pressed by pressing the pressing part 24a by contacting the coil part protruding in a dogleg shape at the middle part with the inner surface of the pressing part 24a of the operating member 24, the pin cap 21 etc. is moved and locked. The structure is such that the 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 portion 30 of the pin cap 21, and the other end is connected to the operating member 24. The pair of link members 38a and 38b are fixed to each other in a mountain shape, and the pivot portion of the shaft portion 30 is used as a mountain height portion.

On the other hand, FIG. 11 uses a pair of chevron-shaped link mechanisms 38c and 38d that have a joint in the center and are open at both ends.
Each joint portion, which is a mountain portion in the middle, is brought into contact with the inner surface of the pressing portion 24A of the operating member 24, and the open end is fixed to the pin cap 21 on the upper side, and the lower side is fixed on the retainer 35 or the like. ing.

In the case of using these link mechanisms, the pin cap 21 is moved upward in the figure by the joint action by pressing the pressing portion 24a, and the locking pin is removed from the locking hole.

Next, in FIGS. 12 and 13, a cam is further used to release the locking pin, and both of them face each other on the inner surface of the pressing part 24a of the operating member 24, and partially overlap. , providing cam members 39a, 39b, 40a, 40b whose degree of polymerization is variable by pressing and forming cam portions on the upper surface of the overlapping portion;
The shaft portion 30 of the pin cap 21 is received and supported by the upper surface of the overlapping portion.

In this case, in FIG. 12, the operating member 24 rotates around the pivot portion 34, and the locking pin is removed by the movement of the pin cap 21.
In FIG. 3, the operating member 24 is slid to allow the locking pin to be removed.

When this cam member is used, the operating member is not necessarily pressed from both sides, but even if the operating member is pressed from one side, it is possible to provide a smooth locking pin removal action depending on the design of the cam member.

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 invention is not limited to this and that design changes are permitted as long as they do not deviate from the purpose. .

Further, in the explanation of each figure, most of 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, press the pressing part 24a of the operating member 24 and remove the locking pin 17 from the locking hole 2 of the rail member 1, and the slide anchor 9 will be moved to the rail member 1. The slide anchor 9 is moved to the desired position and the operating member 2 is moved.
When the pressing part 24a of 4 is released, the locking pin 1
7 is automatically fitted into the locking hole 2 by the biasing force of the biasing spring 20 to position the slide anchor 9 and hold the slip anchor 13 at a predetermined height.

At this time, the resin material 28 in the above embodiment provided on the locking pin 17 is not deformed at all by the stress during normal use of the seat belt B, and the engaging stepped portion 27 of the locking pin 17 is locked. The locking pin 1 is prevented from engaging with the opening periphery 8 of the hole 2.
This facilitates the fitting and dismounting operation of the locking pin 17, and also alleviates the collision between the outer surface of the locking pin 17 and the inner surface of the locking hole 2, thereby preventing the occurrence of abnormal noise due to 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 predetermined value is applied to the seat belt B due to a vehicle collision, etc., in general, a load of 200 kg to 3 tons is applied via the slip anchor 13 and the slide anchor 9. A load is applied to the locking pin 17 in the direction perpendicular to the axis, and the resin material 28 is pushed and deformed by the inner surface of the locking hole 2, and the locking step 27 of the locking pin 17 is pushed against the opening periphery 8 of the locking hole 2. This prevents the locking pin 17 from slipping out from the locking hole 2, greatly increasing the connection strength between the two, and preventing the slide anchor 9 from slipping down.
The state in which the occupant is restrained by the seat belt B is appropriately maintained.

In the above embodiment, a slip anchor is used as the seatbelt support member, and the slip anchor is inserted through the shoulder of the seatbelt B to turn the seatbelt. It can also be applied to connecting buckles to adjust the vertical position, and in this case,
A buckle is attached in place of the slip anchor, and a tongue sewn to the tip of the seat belt is removably connected to the buckle.

(Effects of the Invention) As described above, the device of the present invention is of a type in which 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 pull-out operation or pull-out in the pressing direction by spring pressure, the locking pin can be removed by simply pressing the side, and the seat belt anchor position can be adjusted to the appropriate position according to the body physique etc. can be moved to position,
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. In addition, when installing the device of the present invention in the vehicle body,
It is easy to select the mounting location, and has much superior practical effects 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 when the opening area of the locking hole is increased, it can be expected to have the effect of preventing the generation of abnormal noise due to rattling of the locking pin due to vibrations when the vehicle is running.

[Brief explanation of the drawing]

Fig. 1 is a cross-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. 3 is an enlarged view of the operating section in Fig. 2, and the right half is a cross-sectional view. Also, the left half shows the case where the position is 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 sectional view of a main part showing another embodiment of the operating section of the seat belt anchor device of the present invention, and FIG. 7 is a perspective view of the thin plate spring thereof. 8 is a partially sectional explanatory view showing the main parts of another modified embodiment of the device of the present invention, FIG. 9 is a perspective view of the spring used in FIG. 8, FIGS. 10, 11, 1st
FIG. 2 and FIG. 13 are both schematic explanatory diagrams of main parts showing modified embodiments of the operating section in the apparatus of the present invention. DESCRIPTION OF SYMBOLS 1... Rail member, 2... Locking 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... Pressing part,
30...Shaft part, 32, 32B...Spring, 3
2A...Thin plate spring, 36...Concavity of thin plate spring, 3
8a, 38b, 38c, 38d... link member,
39a, 39b, 40a, 40b... cam member,
B...Seat belt.

Claims (1)

[Claims] 1. A slide anchor is attached to a vertically elongated rail member fixed to the vehicle body and having a plurality of locking holes drilled along the longitudinal direction so as to be movable along the longitudinal direction, and the slide A seatbelt support member is attached to the anchor, and the distal end portion is removably inserted into the locking hole of the rail member perpendicular to the moving direction of the slide anchor, and is fitted into the locking hole. A seatbelt anchor device comprising a locking pin biased by a spring in a direction, and a disengaging means for pulling out and moving the distal end of the locking pin from the locking hole against the bias, wherein the disengagement Means are disposed on both sides of the head of the locking pin, facing each other across the locking pin, and have a pressing portion formed on the outer surface thereof, and are rotatable toward the locking pin when pressed. An operating member attached to a slide anchor, both ends of which are open in a V-shape, the center head of which is connected and supported by the locking pin head, and both open ends of which are locked to the inner surface of the pressing portion of the operating member. 1. A seat belt anchor device comprising a pull-out mechanism made of a spring. 2. The V-shaped spring with open ends of the extraction mechanism is a coil spring, and the coil portion of the coil spring is connected and supported by the head of the locking pin, and both open ends of the coil spring are locked with the inner surface of the pressing portion of the operating member. A seat belt anchor device according to claim 1. 3. The V-shaped spring with open ends at both ends of the extraction mechanism is a chevron-shaped thin plate spring, the top of the chevron-shaped thin plate spring is connected and supported by the locking pin head, and both open ends are connected to the inner surface of the pressing part of the operating member. The seat belt anchor device according to claim 1, which is locked. 4. A slide anchor is attached movably along the longitudinal direction to a vertically elongated rail member that is fixed to the vehicle body and has multiple locking holes drilled along the longitudinal direction, and a seat belt support member is attached to the slide anchor. At the same time, the distal end portion is removably inserted into the locking hole of the rail member perpendicular to the moving direction of the slide anchor, and is biased by a spring in the direction of insertion into the locking hole. In the seatbelt anchor device, the seatbelt anchor device includes a locking pin, and a disengaging means for pulling out and moving the distal end of the locking pin from the locking hole against bias, wherein the disengaging means moves the locking pin. An operation in which the locking pin is disposed on both sides of the pin head side facing each other, a pressing portion is formed on the outer surface of the pin, and the locking pin is attached to the slide anchor so as to be rotatable toward the locking pin when pressed. A member and a coil spring with both ends open are used as elements, and the open ends of the coil spring are respectively locked to the slide anchor near the upper part of the locking pin and the lower part of the locking pin, and the coil is formed in a dogleg shape or an inverted dogleg shape. 1. A seat belt anchor device comprising: a pull-out mechanism configured by projecting a coil portion in the middle and bringing the protruding coil portion into contact with an inner surface of a pressing portion of an operating member. 5. A slide anchor is attached to a vertically elongated rail member that is fixed to the vehicle body and has a plurality of locking holes drilled along the longitudinal direction so as to be movable along the longitudinal direction, and a seat belt support member is attached to the slide anchor. At the same time, the distal end portion is removably inserted into the locking hole of the rail member perpendicular to the moving direction of the slide anchor, and is biased by a spring in the direction of insertion into the locking hole. In the seatbelt anchor device, the seatbelt anchor device includes a locking pin and a disengaging means for pulling out and moving the distal end of the locking pin from the locking hole against bias, wherein the disengaging means An operation in which the locking pin is disposed on both sides of the pin head side facing each other, a pressing portion is formed on the outer surface of the pin, and the locking pin is attached to the slide anchor so as to be rotatable toward the locking pin when pressed. The element includes a member and a chevron-shaped link mechanism with both ends open, the intermediate chevron part of which is attached to the shaft part formed protruding from the upper part of the locking pin perpendicular to the direction of insertion and removal of the locking pin, and the open end of the link mechanism of the operating member. 1. A seatbelt anchor device comprising a pull-out mechanism configured by being locked to a pressing portion. 6. A slide anchor is attached to a vertically elongated rail member that is fixed to the vehicle body and has a plurality of locking holes drilled along the longitudinal direction so as to be movable along the longitudinal direction, and a seat belt support member is attached to the slide anchor. At the same time, the distal end portion is removably inserted into the locking hole of the rail member perpendicular to the moving direction of the slide anchor, and is biased by a spring in the direction of insertion into the locking hole. In the seatbelt anchor device, the seatbelt anchor device includes a locking pin, and a disengaging means for pulling out and moving the distal end of the locking pin from the locking hole against bias, wherein the disengaging means moves the locking pin. An operation in which the locking pin is disposed on both sides of the pin head side facing each other, a pressing portion is formed on the outer surface of the pin, and the locking pin is attached to the slide anchor so as to be rotatable toward the locking pin when pressed. The element includes a member and a chevron-shaped link mechanism with both ends open, the intermediate chevron portion of which abuts against the inner surface of the pressing portion of the operating member, and the open end is connected to the slide anchor near the top of the locking pin and the bottom of the locking pin. 1. A seatbelt anchor device comprising a pull-out mechanism configured by locking each other. 7. A slide anchor is attached to a vertically elongated rail member fixed to the vehicle body and has multiple locking holes drilled along the longitudinal direction so as to be movable along the longitudinal direction, and a seat belt support member is attached to the slide anchor. At the same time, the distal end portion is removably inserted into the locking hole of the rail member perpendicular to the moving direction of the slide anchor, and is biased by a spring in the direction of insertion into the locking hole. In the seatbelt anchor device, the seatbelt anchor device includes a locking pin, and a disengaging means for pulling out and moving the distal end of the locking pin from the locking hole against bias, wherein the disengaging means moves the locking pin. They are arranged facing each other on the slide anchor on both sides of the pin head side with the locking pin in between, and are partially overlapped in opposition to each other on the pressing parts formed on the outer surface thereof, and the degree of polymerization can be varied by pressing. an operating member including a cam member forming a cam portion on the upper surface of the overlapping portion; and a shaft portion formed protruding from the upper part of the locking pin perpendicular to the locking pin insertion/removal direction. A seatbelt anchor device consisting of a pull-out mechanism that is held in place.