RU2616478C2 - Design of banquette with back separated into parts - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: invention relates to design of rear banquettes in vehicles and to design of a banquette with a back separated into parts. Design of the banquette back comprises the first and second reinforcement of the back, a bracket intended for fixation to the floor and a device to connect the first and second reinforcement to the bracket. Besides, the connection device comprises a device to resist removal of the connection part from the hole. Moreover, the device to resist removal comprises a head displaced in respect to an axis.

EFFECT: resistance to removal of a connection part between a banquette back reinforcement and a central bracket in case of collision is increased, design is simplified.

9 cl, 6 dwg

Description

Technical field

The invention relates to the design of a bench with a divided back, in particular the bench of a vehicle.

State of the art

Figure 1 presents a partial and schematic perspective view of an example of reinforcement 10 of the back of the rear bench with a divided back of the vehicle. The reinforcement 10 includes a first reinforcement 12 of the back and a second reinforcement 14 of the back. As a rule, in the case of a backrest, divided into parts, the first and second reinforcement 12, 14 are not the same size. For example, the first armature 12 is located on one third of the backrest in the transverse direction of the backrest, and the second armature 14 is located on the remaining two thirds of the bench in the transverse direction of the bench. Each reinforcement 12, 14 contains a reinforcing frame on which a lattice not shown is fixed, covered with a not shown sheathing.

The first reinforcement 12 includes a reinforcing frame 16, which is closed. From the outer side of the reinforcing frame 16, a bracket 18 is mounted pivotally connected to an outer flange 20 configured to be mounted on a vehicle chassis not shown. The second reinforcement 14 comprises a reinforcing frame 22, which is closed. On the outer side of the reinforcing frame 22, a bracket 24 is mounted pivotally connected to an outer flange 26 configured to be mounted on a vehicle chassis not shown.

On the inner side, the reinforcing frame 16 of the first reinforcement 12 and the reinforcing frame 22 of the second reinforcement 14 are connected to the central bracket 28 by means of a connecting device 30. The central bracket 28 is intended for attachment to the vehicle floor.

Figure 2 shows, in an enlarged view, an example of a connecting device 30. The connecting device 30 comprises an internal bracket 32 fixed to the reinforcing frame 22, for example, by welding. In addition, the connecting device 30 includes a connecting part 36, which has a rotation symmetry about the axis A. The connecting part 36 contains a cylindrical section 38 with a circular cross section, which is welded at one end to the bracket 34 and mounted to rotate in a round hole 40 with axis A made in the bracket 28, and in the round hole 42 with the axis A, made in the bracket 32. Between the hole 40 and the connecting part 36 can be placed sound-absorbing sleeve 44, and between the hole 42 and the connecting part 36 can be positioned sound absorption sleeve 46. On the side opposite the bracket 34, the cylindrical portion 38 of the connecting piece 36 extended portion 48 of smaller cross section. On the side opposite to the cylindrical section 38, the smaller section 48 is continued by the head 50 defining the shoulder 52 along with the smaller section 48. The brackets 32, 34, the central bracket 28 and the connecting part 36 can be made of steel. The brackets 32, 34 can be made by stamping from a steel plate having a thickness of 2 mm to 3 mm. The diameter of the round portion 38 of the connecting part 36 is, for example, from 10 mm to 20 mm.

During operation, the bracket 28 is located between the two brackets 32 and 34. The backrest of the bench is mounted by sequentially inserting the connecting part 36 fixed on the bracket 34 into the hole 40 of the bracket 28 and into the hole 42 of the bracket 32. For this, the maximum diameter of the head 50 should be less the diameter of the hole 42, possibly equipped with a sound-absorbing sleeve 46.

In the event of a vehicle collision, for example in the event of a head-on collision, the second armature 14 tends to shift to the front of the vehicle, in particular, under the influence of a load in the trunk of the vehicle. This can lead to quite serious deformations of the brackets 32, 34, the connecting part 36 and / or the bracket 28 and to tearing the connecting part 36 out of the bracket 32 and possibly tearing the connecting part 36 out of the bracket 28. This should be avoided, as this In this case, the connection between the first reinforcement 12 and the bracket 28 and, possibly, the connection between the second reinforcement 14 and the bracket 28 may be broken.

The shoulder 52 forms a support surface substantially perpendicular to the axis A during normal operation and intended to come into contact with the bracket 32 when the connecting device 30 is deformed in the event of an impact in order to avoid the connection of the connecting part 36 from the bracket 32. However, such a device may not be enough to ensure the preservation of the connection between the first valve 12 and the bracket 28 under any collision conditions of the vehicle.

Figure 3 presents a view similar to Figure 2, after a frontal collision in the presence of cargo in the trunk of the vehicle. Here you can see the deformation of the brackets 32, 34 and the brackets 28 and the tearing of the connecting part 36 from the bracket 32.

SUMMARY OF THE INVENTION

The invention is intended to eliminate all or part of the shortcomings of the above-described designs of the bench with a divided back.

The objective of the invention is to increase the resistance to tearing of the connecting part between the reinforcement of the back of the bench and the Central bracket in the event of a collision.

Another objective of the invention is the implementation of a device for connecting reinforcement of the back of a bench with a central bracket, which has a simple design.

In connection with this invention, a backrest design for a vehicle bench is provided, comprising a first armature of a backrest and a second armature of a backrest, a bracket for attaching to a vehicle floor, and a device for connecting the first and second armatures to a bracket. The connecting device includes a first bracket mounted on the first fixture, a second bracket mounted on the second fixture, a connecting part mounted on a second bracket mounted rotatably relative to the bracket and mounted to rotate in the first hole of the first bracket, while the connecting device further comprises a device for counteracting tearing of the connecting part from the first hole.

According to an embodiment, the connecting part comprises a first cylindrical section mounted on a second bracket, located along the first axis, rotatably mounted relative to the bracket and mounted to rotate in the first hole of the first bracket, and the tearing resistance device comprises a second section of a smaller section, continuing the first section, and the head, continuing the second section, while the head forms a shoulder relative to the second section.

According to an embodiment, the anti-tearing device further comprises a third bracket mounted on the first armature or on the first bracket, the third bracket comprising a second hole into which the connecting part enters.

According to an embodiment, in normal use of the bench, the connecting part is located at a distance from the second hole.

According to an embodiment, a sound-absorbing sleeve is installed between the connecting part and the first hole. The first hole and the second hole are round, and the diameter of the second hole is strictly less than the diameter of the first hole.

According to an embodiment, the head is offset relative to the first axis.

According to an embodiment, the head has rotation symmetry about a second axis offset from the first axis.

According to an embodiment, the deviation between the second axis and the first axis is from 1.5 mm to 5 mm.

According to an embodiment, the head does not have rotation symmetry about the first axis.

According to an embodiment, the head and the first hole are designed so that the head can enter the first hole at least when the head is tilted around the first axis relative to the first hole and cannot enter the first hole at least when the head is tilted around the first axis relative to first hole.

The object of the invention is also a bench for a vehicle with a back divided into parts, containing the back structure described above.

Brief Description of the Drawings

These and other features and advantages will be more apparent from the following detailed description of particular embodiments, presented as non-limiting examples, with reference to the accompanying drawings, in which:

Figure 1 is a partial and schematic front view of an example of a reinforcement of a back of a bench with a back divided into parts.

Figure 2 is an enlarged view of an example of a connection device between the reinforcement of the back of the bench, shown in Figure 1, and the Central bracket.

Figure 3 is a view similar to Figure 2 after a collision.

FIG. 4-6 is a partial and schematic perspective view of embodiments of the connection device between the armatures of the back of the bench and the central bracket.

Detailed description

For reasons of clarity, in the various drawings, the same elements are denoted by the same reference numbers, while different drawings are not shown to scale. In addition, only the elements necessary for understanding the embodiments are presented and will be described. In particular, the design of the casing of the vehicle seat and the connection elements between the backrest and the seat fitting of the vehicle seat are well known to the person skilled in the art, and a detailed description thereof is omitted. In addition, in the following description, unless otherwise indicated, the terms “substantially”, “approximately”, and “order” mean “with an accuracy of 10%”.

FIG. 4 is a schematic and partial perspective view of an embodiment of the connection device 60 between the valve 12 and the bracket 28. The connection device 60 includes all the elements of the connection device 30 shown in FIG. 2 and further comprises an additional bracket 62 mounted on the bracket 32, for example, by welding. The bracket 62 contains a circular hole 64, essentially coaxial with the hole 40 of the bracket 28 and with the hole 42 of the bracket 32. The portion of the bracket 32 containing the hole 42 is located between the bracket 62 and the bracket 28. The bracket 62 can be made by stamping from a steel plate with a thickness of the order 2 mm.

Installation of the banquet is carried out by inserting the connecting part 36, mounted on the bracket 34, sequentially in the hole 40 of the bracket 28, in the hole 42 of the bracket 32 and in the hole 64 of the additional bracket 62. For this, the maximum diameter of the head 50 should be less than the diameter of the hole 64. Preferably between the hole 64 and the connecting part 36 there is no sound-absorbing sleeve, and an intermediate space is provided between the hole 64 and the connecting part 36. Preferably, during normal operation, there is no contact between the connecting part 36 and the hole 64. Preferably, the diameter of the hole 64 is strictly less than the diameter of the hole 42.

The inventors have found that the tear resistance of the connecting device 60 is improved compared to the connecting device 30 shown in FIG. 2. Indeed, in order for the connection between the valve 12 and the central bracket 28 to be interrupted during the collision, the head 50 of the connecting part 36 must exit sequentially from the hole 64 and from the hole 42. In addition, preferably the diameter of the hole 64 is less than the diameter of the hole 42. Thus, when, in the event of a collision, the head 50 makes contact with the bracket 62, the contact surface between the shoulder 52 and the bracket 62 exceeds the contact surface between the shoulder 52 and the bracket 32. Therefore, efforts are required for ejection head 50 from the opening 64 exceeds the force required for ejection head 50 from the hole 42.

FIG. 5 is a schematic and partial perspective view of an embodiment of the connection device 70 between the valve 12 and the bracket 28. The connection device 70 includes all the elements of the connection device 30 shown in FIG. 2, except that the connection part 36 is replaced the connecting part 72. The connecting part 72 contains a cylindrical section 38 with the axis A of the connecting part 36, which, as mentioned above, has a circular cross section, is fixed at one end by welding on the bracket it is not 34 and is mounted to rotate in the hole 40 of the bracket 28 and in the hole 42 of the bracket 32, if necessary, through the sound-absorbing bushings 44 and 46.

On the side opposite to the bracket 34, the portion 38 of the connecting part 72 is continued by a cylindrical portion 76 of a smaller cross section located along an axis A ′ offset from axis A. On the side opposite to the cylindrical portion 38, the portion 76 of the smaller section is continued by the head 78 bounding together section 76 of a smaller cross section shoulder 80. The deviation between the axes a and A 'is several millimeters, for example from 1.5 mm to 5 mm. The connecting part 72 may be made of steel.

The installation of the banquet is carried out by inserting the connecting part 72, fixed by welding on the bracket 34, sequentially in the hole 40 of the bracket 28 and in the hole 42 of the bracket 32. Therefore, the maximum diameter of the head 78 must be less than the diameter of the hole 42.

The inventors have found that the tear resistance of the connecting device 70 is improved compared to the connecting device 30 shown in FIG. Indeed, in order for the connection between the valve 12 and the central bracket 28 to be interrupted during the collision, the head 78 of the connecting part 36 must exit the hole 42 of the bracket 32. Since the axes A and A 'do not coincide, the head 78 is not centered in the hole 42 therefore, when in the event of a collision, the head 78 makes contact with the bracket 32, the contact surface between the shoulder 80 and the bracket 32 exceeds the contact surface between the shoulder 52 and the bracket 32 when the head 50 of the connecting device 30 comes into contact with contact with the bracket 32. Therefore, the forces required to tear the head 78 out of the hole 42 exceed the forces necessary to tear the head 50 of the connecting device 30 out of the hole 42.

FIG. 6 is a schematic and partial perspective view of an embodiment of the connection device 90 between the valve 12 and the bracket 28. The connection device 90 includes all the elements of the connection device 30 shown in FIG. 2, except that the connection part 36 is replaced the connecting part 92, the hole 40 in the bracket 28 is replaced by the hole 94 and the hole 42 in the bracket 32 is replaced by the hole 96.

The connecting part 92 comprises a cylindrical section 98 with an axis A, which is identical in construction to the cylindrical section 38 of the connecting part 36 described above. The cylindrical section 98 has a circular cross section and is welded at one end to the bracket 34. On the side opposite to the bracket 34, the cylindrical section 98 of the connecting part 92 is continued by a section 100 of a smaller cross section with the axis A, which has the same construction as the above-described section 48 of a smaller section of the connecting part 36. Section 10 0 is continued by the head 102, which limits the shoulder 104 together with the smaller section 100. The head 102 does not have rotation symmetry about axis A. The head has a cross section whose size, measured in the direction perpendicular to axis A, exceeds the diameter of the cylindrical section 98. The direction of the larger the size of the head 102 in a plane perpendicular to the axis A is called the major axis of the head 102. For example, in the plane perpendicular to the axis A, the head 102 has a substantially rectangular cross section. In this case, the major axis corresponds to a direction parallel to the large side of the cross section of the head 102.

The hole 94 includes a circular hole 106 with the axis A, continued by two diametrically opposite holes 108, located in a line along the direction D1. The cylindrical portion 98 of the connecting part 92 is rotatably mounted in the round hole 106. The dimensions of the hole 94 are such that the head 102 can enter the hole 94 only if it is aligned with the two holes 108, that is, when the major axis of the head 102 is oriented parallel to the direction D1 . Hole 96 includes a circular hole 110 with axis A, extended by two diametrically opposite holes 112, located in a line along the direction D2. The cylindrical section 98 of the connecting part 92 is rotatably mounted in the round hole 110. The dimensions of the hole 96 are such that the head 102 can enter the hole 96 only if it is aligned with two holes 112, that is, when the major axis of the head 102 is oriented parallel to the direction D2 . According to an embodiment, the directions D1 and D2 are parallel.

According to an embodiment, the installation of the bench is as follows. Bracket 28 is mounted on the floor of the vehicle. The fittings 14 are mounted on the bracket 28 by inserting the connecting piece 92 welded to the bracket 34 into the hole 94 of the bracket 28. To do this, the fittings 14 are tilted relative to the bracket 28. Then, the fittings 12 are mounted on the bracket 28 by fitting the hole 96 of the bracket 32 onto the connecting piece 92. For this, the reinforcement 12 is tilted with respect to the reinforcement 14. Then, the reinforcement 12, 14 are moved to their normal operating positions. In an embodiment, the reinforcement 14 is brought into its normal operating position prior to the installation of the reinforcement 12.

In the normal operating position, the major axis of the head 102 is tilted relative to the directions D1 and D2 of the holes 94 and 96, for example, by approximately 90 ° so that the supporting surface 104 comes to a stop position in the bracket 12 when the head 102 is brought closer to the bracket 32 by sliding connecting piece 92 along axis A.

The inventors have found that the tear resistance of the connecting device 90 is improved compared with the connecting device 30 shown in FIG. Indeed, in order for the connection between the fittings 12 and the central bracket 28 to be interrupted during the collision, the head 102 of the connecting part 92 must exit from the hole 96. Since the major axis of the head 102 has an inclination relative to the direction D1, when the head 102 enters in the event of a collision in contact with the bracket 32, the contact surface between the shoulder 102 and the bracket 32 exceeds the contact surface between the shoulder 52 and the bracket 32 in the case of the connecting part 36 of the connecting device 30. Therefore, the force required to tear the head 102 out of the hole 96 exceeds the forces required to tear out the head 50 of the connecting device 30 from the hole 42.

Above, various embodiments with various versions have been presented. It should be noted that a specialist can combine various elements of these various embodiments and versions without showing an inventive step. In particular, it is possible to provide a connecting device that combines the distinguishing features of the connecting device 60 and the distinctive features of the connecting device 70 and which may include an additional bracket 62 and a connecting part with a head 78 offset from the center.

Claims (9)

1. The design of the back of the bench of the vehicle, containing the first armature (12) of the backrest and the second armature (14) of the backrest, a bracket (28) intended for fastening to the floor of the vehicle, and a device (60, 70, 90) for connecting the first and second armature with a bracket in which the connecting device comprises a first bracket (32) mounted on the first fixture, a second bracket (34) mounted on the second fixture, a connecting part (36, 72, 92) mounted on the second bracket mounted for rotation relative to staples and set immersed with the possibility of rotation in the first hole (42, 96) of the first bracket, while the connecting device further comprises a device to counteract the tearing of the connecting part from the first hole, and the connecting part (36, 72, 92) contains a first cylindrical section (38, 98), mounted on a second bracket (34), located along the first axis (A), mounted to rotate relative to the bracket (28) and mounted to rotate in the first hole (42, 96) of the first bracket (32), and in which the device your anti-tearing contains a second section (48, 76, 100) of a smaller section, continuing the first section, and a head (50, 78, 102), continuing the second section, while the head forms a shoulder (52, 80, 104) relative to the second section, wherein the head (78) is offset relative to the first axis (A). 2. The backrest structure according to claim 1, in which the anti-tearing device further comprises a third bracket (62) mounted on the first armature (12) or on the first bracket (32), wherein the third bracket contains a second hole (64) into which connecting piece (36) enters. 3. The backrest structure according to claim 2, in which during normal use of the bench, the connecting part (36) is located at a distance from the second hole (64). 4. The backrest structure according to claim 3, in which a sound-absorbing sleeve (46) is installed between the connecting part (36) and the first hole (42), in which the first hole and the second hole (64) are round and in which the diameter of the second hole is strictly smaller diameter of the first hole. 5. The backrest structure according to claim 1, in which the head (78) has a rotation symmetry about a second axis (A ') offset from the first axis (A). 6. The backrest structure according to claim 5, in which the deviation between the second axis (A ') and the first axis (A) is from 1.5 to 5 mm. 7. The backrest structure according to claim 1, in which the head (102) does not have rotation symmetry about the first axis (A). 8. The backrest structure according to claim 7, in which the head (102) and the first hole (96) are made so that the head can enter the first hole (96) at least when the head is tilted around the first axis relative to the first hole and not could enter the first hole (96) at least with a second inclination of the head about the first axis relative to the first hole. 9. The bench of the vehicle with a divided back, containing the design of the back according to any one of paragraphs. 1-8.

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