RU27455U1 - SECURITY BELT LOCK - Google Patents

Description

SECURITY BELT LOCK

This utility model relates to vehicle safety systems, namely to passive safety devices, and is a seat belt lock designed to protect the driver and passengers in extreme situations.

Known analogues of this utility model include seat belt buckles according to the patent of the Russian Federation No. 2101202, class. А44В 11/00, B60R 22/30 and certificate for utility model of the Russian Federation No. 15840, cl. A 44 B 11/00, B 60 R 22/30. For the prototype of a utility model, a seat belt lock is selected, described in RF patent No. 2125396, class. A 44B 11/00 (publication of 01/27/1999 in Bulletin No. 3), which consists of interlocking detachable and receiving parts. The detachable part contains a tongue with a hole made at the end of the tongue inserted into the receiving part, and the receiving part, placed in a protective housing, contains a U-shaped clip. In the front part of the cage, two symmetrically bent and facing each other sections of the side walls of the cage are made. A latch is mounted in the clip, on the front of which there is a tooth for interacting with the tongue hole and the hole made in the base of the clip. Symmetrically protruding end sections are made in the lower part of the latch, freely

No. 2420-226151RU / 042

Description

placed in slots located in the side walls of the cage. To lock the latch, there is a latch located with the possibility of moving in the oblong holes of the side walls of the cage parallel to itself and the base of the cage under the action of the opening button and equipped with a spring that exerts pressure on the latch and made in the form of a symmetrically curved plate placed by the bend zones in the lower bases of the oblong holes the side walls of the cage and containing the Central part with a protruding flange in contact with the side walls of the cage, and the side parts, end us who are in contact with a lock. To push the tongue out of the lock, an ejector with an ejection spring is provided in the design. The lower bases of the oblong holes of the side walls of the cage are made rectangular. The protruding flange of the central part of the spring is directed to the protective housing of the receiving part of the lock. The central part of the spring and its protruding flange are located in the same plane.

To provide better mobility of the opening button in the protective case, cantilever and semi-elastic guides are located on the side walls of the button. Guide ribs may be provided on the inner side of the rail cage.

A disadvantage of the known design is that with a random selection of the size of the structure it is impossible to ensure reliable placement in the protective case of the front edge of the button

opening, by pressing which the lock opens. In many cases, the button protrudes from the housing (in the case of a random choice of construction dimensions or large tolerances). A button protruding from the housing can lead to an unexpected opening of the lock at the time of an accident if objects in the vehicle or part of the body (for example, a hand) of one of the passengers accidentally hits the button at the time of the accident.

The technical result of this utility model is to increase the reliability of the seat belt lock due to its design, excluding the accidental opening of the lock.

This technical result is achieved in that the lock for the vehicle seat belt contains interlocking detachable and receiving parts, while the detachable part has a tongue with a hole made at the end of the tongue inserted into the receiving part, the receiving part is housed in a hollow body and contains a U-shaped a clip, in the front of which two symmetrically bent and facing each other sections of the side walls of the clip are made, a curved latch of a L-shaped or U-shaped type is mounted in the clip, on the front side of which a tooth is located for interacting with the tongue hole and the hole made at the base of the clip, the upper part of the latch is provided with notch-catching side walls with notches, symmetrical lateral parts are made in the back of the latch

longitudinal protrusions freely placed in slots located in the side walls of the holder, a latch for locking the latch that can move in the oblong holes of the side walls of the holder parallel to itself and the base of the holder under the action of an opening button having a front face and side walls on which to engage the holder slots are made, and an ejector with an ejection spring interacting with the tongue of the lock to exert pressure on the latch using the spring of the retainer. The side walls of the lock release button are provided with grips that act as guides in the holes located in the side walls of the clip.

According to the invention, the oblong holes on the side walls of the casing are arranged so that the distance between them and the front edge of the protective housing is equal to or greater than the distance between the front edge of the opening button and its grip, and the length of the oblong hole on the side walls of the casing is greater than the sum of the button grip width and length side cutout buttons.

Next, the utility model is described in more detail with reference to the drawings, which depict the following:

FIG. 1 is a general view of a lock with a latch of an L-shaped form in an exploded state;

FIG. 2 is a general view of the proposed lock with a latch of a образ shaped view in a disassembled state;

open view;

FIG. 4 is a cross-sectional view from above of a lock with a Latch-shaped latch in an open position;

FIG. 5 is a sectional side view of a lock with an L-shaped latch in a closed position; FIG.

Fig, b is a section view from above of a lock with a L-shaped latch in a closed position;

Fig, 7 is a bottom view of the lock in the closed position;

Fig, 8 is a side view of the opening button;

FIG. 9 is a plan view of an open button; FIG.

Fig, 10 - action of the lock at the time of an accidental blow;

Fig, 11 is a side view of the lock with a recessed opening button,

The lock for the vehicle seat belt consists of interlocking detachable and receiving parts. The detachable part comprises a tongue 1 with an opening 2 made at the end of the tongue 1 inserted into the receiving part. The receiving part consists of a U-shaped clip 3, in which the latch 4 is located. The latch 4 is affected by the spring 5 of the latch using the latch b. To push the tongue 1 out of the lock, a pusher 8 is provided in the design with an eject spring 1, which is controlled by the opening button 9. In front of the cage 3 there are bent elements 10 and 11 symmetrical to the side walls 12 and 13, bent elements 10 and 11 face each other so so that a gap remains between them. In the side walls 12 and 13 of the cage 3 are made

oblong holes 14 to capture the end of the latch b and the slots 15 to accommodate the lateral symmetrical longitudinal projections 16 of the latch 4. At the base 17 of the holder 3, a hole 18 is made to hold the tongue 20 of the latch 4 in the closed position. The latch 4 is made of sheet material so that on its front side 19 there is a tooth 20 that enters the hole 2 of the tongue 1 and the hole 18 of the base 17 of the holder 3. The front side 19 of the latch 4 has a Gili U-shaped profile. The upper part of the latch has two symmetrical walls 21, which are provided with stepped notches 22. At the base 17 of the cage 3 are the ejector 8 and the spring of the ejector 7 can be moved along the axis of the casing 3. The spring 7 of the ejector is located in the hole 18 of the base 17 of the cage 3 so that its one end rests on the finger 23 of the ejector 8 and the other end rests on the protruding element 24 of the base 17 of the holder 3, the latch b is designed to lock the latch 4 in the closed position. To perform this function, the spring-loaded clamp 5 during longitudinal movement is supported by oblong holes 14 of the side walls 12 and 13 of the cage 3, and its movement parallel to the base 17 of the cage 3 is carried out using the opening button 9. One end of the spring 5 of the retainer rests on the pressure element 25 of the retainer b, which prevents accidental displacement of the spring 5 towards the walls 12 and 13 of the holder 3. The second end of the spring 5 is supported by a support 26 b

retainer springs on the clip 3 and the lock rod 27. The support 26, in turn, has a guiding element 28 for the retainer spring 5 and is fixed in the lock so that it does not shift its ends towards the tongue 1. The pressing element 25 and the guiding element 28 of the retainer spring 5 are positioned so that they prevent the spring from displacing 5 latches towards the sides of the cage during spring deformation during operation of the lock. On the side walls 29 of the button 9 times1 of the opening there are slots 30 for gripping the ends of the latch 6. The side walls 29 of the button 9 of the opening are provided with guides 31 that guide the opening button when it is inserted into the enclosure 32. The entire receiving part of the lock is located in the protective case 32. Side the walls 29 of the opening button and the guides 31 are fixed on the front face 33 of the opening button, which is provided with a cutout 34 for the tongue 1. On the inner surface of the sides 29 of the opening button 9 there are protruding grips 35 that interact t with protrusions 36 on the side walls of the ejector 8 and serve as guides in the oblong holes 37 located in the side walls 12 and 13 of the cage 3. The oblong holes 37 on the side walls of the casing are arranged so that the distance between the oblong hole 37 and the front edge 38 of the protective housing a is equal to or greater than the distance b between the front face 33 of the opening button and the grip 35, and the length of the elongated hole on the side walls of the casing is greater than the sum of the length

capture d and the length of the side cut e: a b;

with d + e.

The support 26 can be made in the form of a curved rafter, resting on the holes 14 in the side walls 12 and 13 of the cage 3, or in the form of traction, rigidly fixed to the side of the base 17 of the cage 3 (for example, by riveting). The seat belt lock is attached to the seat or body of the vehicle using a tie rod 27.

The above castle operates as follows,

In the closed position, the tooth 20 of the latch 4 is simultaneously in the hole 2 of the tongue 1 and the hole 18 of the base 17, and the latch b is pressed by the spring 5 against the elongated holes 14 of the walls 12 and 13 towards the tongue 1 so that the latch spring 5 presses the latch 6 to the upper edge 39 of the side walls 21 of the latch 4. The tooth 20 of the latch 4 thereby prevents the tongue from being removed from the lock, and at the same time, the constant pressure of the retainer spring 5 on the latch 4 by means of the side walls 12 and 13 ensures reliable placement of the tooth 20 in the hole 2 language 1 and hole Oi 18 founding 17.

To open the lock, press the opening button 33 of the opening button 9. The side walls 29 of the opening button move and the cutouts 30 located on the sides, moving, capture the ends of the latch b and, overcoming the pressure of the spring 5 of the latch, move the latch b in the oblong holes 14 in the direction of the thrust 27 to

8

until the latch has moved so far that its contact with the edges 39 has ceased, the Latch 4 rises to the height of the cutout 22, the tooth 20 is removed from the hole 2 of the tongue 1 / and the ejector 8 pulls the tongue 1 out of the lock, opening the lock. The ejector 8, by means of its spring 7, disengages the tooth 20 of the latch 4 immediately as soon as the latch b ceases to prevent the latch from being lifted.

In the open position, the tooth 20 of the latch 4 rests on the ejector 8 and the latch b is pressed in the oblong holes 14 of the side walls 12 and 13 towards the thrust 27. The latch b presses the front edge 40 of the incisions 40 of the incisions 22 of the side walls 21 of the latch 4. When the direction of the tongue 1 in the receiving part of the lock, the retainer b forces the tooth 20 into the hole 2 until the tongue is sufficiently pressed by the ejector 8 so that the tongue hole 2 and the latch tooth 20 are aligned.

The selected ratio of the distance a between the oblong hole 37 and the front edge 38 of the protective housing and the distance b between the grip 35 and the front face 33 of the button

a b;

ensures that the front edge of the button stays in the closed position, or in the so-called recessed form. In other words, the front edge of the button in the 3C1 closed position always remains below or at the level of the front edge of the protective housing regardless of any change in any other design dimensions of the lock. This eliminates accidental collision

any object or body with a button at the time of the accident, which may lead to the opening of the lock. The selected ratio of the length from the oblong hole to the sum of the width d of the grip and the length e of the side cut

with d + e

ensures that the opening button stays in the same position with respect to the housing and in the open lock, regardless of changes in other design parameters of the lock. This eliminates the possibility of accidental debris falling outside the front edge of the opening button in the open position of the lock (which happens when the button is raised higher than the front edge of the lock), which could damage the normal operation of the lock. The selected ratio also eliminates the possibility of deformation of the opening button and other elements of the lock in case of accidental lateral force on the lock button while it is in open form.

Claims (1)

The lock for the vehicle seat belt containing interlocking detachable and receiving parts, the detachable part having a tongue with a hole made at the end of the tongue inserted into the receiving part, the receiving part is placed in a hollow protective case and contains a U-shaped clip in front of which two symmetrically bent and facing each other sections of the side walls of the cage are made, a curved L-or U-shaped latch is mounted in the cage, on the front side of which there is a tooth for interacting with with the tongue hole and the hole made at the base of the clip, the upper part of the latch is equipped with notch-catching side walls with notches, and in the back of the latch there are lateral symmetrical longitudinal protrusions freely mounted in slots located in the side walls of the holder, a latch for locking the latch that can move in the oblong holes of the side walls of the cage parallel to itself and the base of the cage under the action of an opening button having a front face and side walls on which to the catch of the latch is made slots, and the ejector with an ejection spring interacting with the tongue of the lock to exert pressure on the latch using the spring of the latch, characterized in that the elongated holes on the side walls of the casing are located so that the distance between them and the front edge of the protective housing is or exceeds the distance between the front face of the opening button and its grip, and the length of the oblong hole is greater than the sum of the width of the button grip and the length of the side cutout of the button.