FR3137948A1 - fixing device - Google Patents

Abstract

The invention relates to a fixing device (1) comprising: - a male element (10) provided with a cylindrical retaining foot and provided with locking blocks; - a female element (20) comprising a coupling face through which a housing opens, the female element (20) comprises counter-blocks; the fixing device (1) comprises guide means configured to guide the coupling of the female element (20) with the male element (10) in two successive phases, the first phase corresponding to the insertion of the retaining foot in the housing in a helical movement in a first direction, and the second phase comprises a rotational movement in the first direction making it possible to position the locking blocks in abutment against the counter-blocks, the device comprises magnetic and/or elastic means configured to oppose rotation in a second direction. Figure 1

Description

fixing device FIELD OF INVENTION

The invention relates to the automotive field and more particularly to the fixing means used in the automotive field. In particular, the invention relates to a fixing means for assembling a first part with a second part.

TECHNOLOGICAL BACKGROUND OF THE INVENTION

Motor vehicles require the use of numerous fastening devices. The latter are notably used to attach, to the motor vehicle in question, sometimes in a reversible or removable manner, an additional part. In this regard, the latter may include permanent elements such as bumpers, trim panels, or elements capable of being fixed temporarily.

Thus, patent applications EP3209888 A1 and EP2807383 A1 each propose a fixing device allowing the assembly of two parts. These fixing devices are, however, not satisfactory.

Indeed, there are however situations in which these fixing devices can be required to allow easy and tolerant assembly in terms of positioning of the parts to be assembled.

Thus, an aim of the present invention is to propose a fixing device making it possible to reversibly join two parts together and obviating the aforementioned problems.

BRIEF DESCRIPTION OF THE INVENTION

The aim of the present invention is achieved by a fixing device for reversibly joining a first part and a second part, the fixing device comprising:

- a male element configured to be in fixed or pivotal connection with the second part, the male element is provided with a retaining foot which extends along an elongation axis and which comprises at least one locking block which is 'extends laterally to the support leg and from a locking section of said support leg;

- a female element configured to be in fixed or pivotal connection with the first part, the female element comprising a coupling face, and through which opens a housing delimited laterally by an internal surface, the female element also comprises at least one counter -block placed on the internal surface of the housing;

the fixing device comprises guide means configured to guide the coupling of the female element with the male element according to two successive phases called, respectively, first phase and second phase and at the end of which the male element and the female element are coupled together, the first phase corresponding to the engagement of the retaining foot in the housing, according to a direction of engagement, by the coupling face according to a translational or helical movement, while the second phase allowing position the at least one locking block abutting against the at least one counter-block so as to prevent any disengagement of the retaining foot in a direction of disengagement opposite to the direction of engagement, the device comprises magnetic means and/or or elastics configured to oppose a rotational movement likely to lead to decoupling of the female element and the male element.

According to one embodiment, the holding foot is of generally cylindrical shape around the axis of elongation, while the internal surface of the housing has a symmetry of revolution around an axis of revolution, the axis of revolution. revolution being coincident with the axis of elongation when the male element and the female element are coupled together.

According to one embodiment, the guide means are arranged so that the first phase corresponds to a first helical movement, and so that the second phase corresponds to a rotational movement in a second direction of rotation around the elongation axis, the first helical movement comprising a translation movement in the direction of engagement combined with a rotational movement in a first direction of rotation around the elongation axis and opposite to the second direction.

According to one embodiment, the magnetic and/or elastic means are configured to oppose a rotational movement in the first direction as soon as the male element and the female element are coupled together.

According to one embodiment, the male element comprises a main section of planar shape which has an upper face and a lower face and from which the holding foot extends, the locking section of the holding foot s 'extending from a free end of said retaining foot.

According to one embodiment, said fixing device further comprises a wedge intended to be assembled, in fixed and removable connection, with the male element to form an intermediate element in which the retaining foot is in a position d assembly, the wedge comprising a first face and a second face parallel to each other and through which a through passage delimited by an internal wall opens, the passage is in particular configured to allow the engagement of the retaining foot in said passage through the first face in order to impose on said retaining foot the assembly position, the assembly position being a position for which the locking section is in projection relative to the second face, and the first face and the lower face are facing each other and at a non-zero distance D from each other.

According to one embodiment, the holding foot comprises a groove which extends over the entire length of said holding foot and which cooperates with a tongue formed on the wedge so as to prevent any relative rotation of the holding foot relative to to the wedge when said retaining foot is in the assembly position.

According to one embodiment, the intermediate element comprises latching means configured to prevent disengagement of the foot holding the passage when said holding foot is in the assembly position.

According to one embodiment, said device comprises disassembly means configured to allow the decoupling of the male element and the female element, said decoupling involving in order a third phase and a fourth phase, the third phase comprising a rotation of the male element around the axis of elongation in the first direction of rotation, and the fourth phase comprising a second helical movement, the second helical movement comprising a translation movement in a direction opposite to the direction of engagement combined with a rotational movement in the first direction of rotation around the axis of elongation.

According to one embodiment, the disassembly means comprise at least one disengagement pad projecting relative to the second face, the disassembly means also comprise at least one disengagement recess formed on the coupling face, the recess disengagement being configured to guide the coupling of the female element with the male element by sliding of the disengagement stud against a surface, called sliding surface, of the disengagement recess and so that at the end of the disengagement fourth phase the retaining foot is disengaged from the housing.

According to one embodiment, the sliding surface comprises a first section and a second section, the first section being of helical shape while the second section being planar and parallel to the coupling face, the third phase corresponding to sliding of the disengagement pad against the second section while the fourth phase corresponds to a sliding of the disengagement pad against the first section.

According to one embodiment, the at least one locking block, in one direction, called the extension direction, going from the main section towards the free end of the retaining foot, comprises a locking face and a face free opposite the locking face, while the at least one counter-block comprises a bearing face opposite the coupling face and against which a locking face bears at the end of the second phase, said support preventing any disengagement of the holding foot under the effect of an effort exerted in a direction opposite to the direction of engagement.

According to one embodiment, the at least one counter-block comprises an engagement face which extends from the internal surface of the housing, and which connects the support face and another face of the counter -block opposite the support face, said engagement face having a helical shape and configured to cooperate with the locking block, said cooperation imposing, during the first phase, the first helical movement on the holding foot during the engagement of the latter in the housing by sliding of the locking block against the engagement face.

According to one embodiment, the magnetic means comprise a first series of magnets and a second series of magnets arranged, respectively, in the spacer and in the female element.

According to one embodiment, the first series of magnets and the second series of magnets are arranged so that an attraction force is exerted between the first series of magnets and the second magnet at the at the end of the second phase, and so that a repulsion force is exerted between the first series of magnets and the second of magnets at the end of the fourth phase.

According to one embodiment, the second part comprises, on a flat section, a hole in which the retaining foot is engaged before assembling the male element with the wedge, advantageously the flat section has a thickness less than or equal to at distance D.

According to one embodiment, the elastic means comprise a spring configured to partially support against the second part.

The invention also relates to a motor vehicle provided with at least one fixing device according to the present invention used to fix said vehicle, forming the first part, the second part, the second advantageously comprising a nomadic fixing system, in particular for mobile phone or even a roof bar.

Other characteristics and advantages will appear in the following description of a fixing device according to the invention, given by way of non-limiting examples, with reference to the appended figures in which:

There is a schematic representation in a perspective view of a fixing device according to an advantageous embodiment of the present invention, the fixing device is in particular shown in this figure in an assembled configuration;

There is another representation of the fixing device of the and to which a second part is added, in particular a roof bar, said second part is fixed to the retaining foot of the fixing device;

There is a representation, in a perspective view, of the male element implemented in the fixing device of the , this figure also shows the axis of revolution XX' of the holding foot;

There is an illustration, in a perspective view and from the second face, of a wedge capable of being implemented within the framework of the present invention;

There is an illustration, in a perspective view and from the first side, of the wedge of the ;

There is an illustration, from a perspective view, of an intermediate element;

There is another representation of the male element of the allowing observation of the stop;

There is a representation, in a perspective view and through the coupling face, of a female element capable of being implemented in the fixing device shown in ;

There is a representation, in a perspective view and from the rear face, of the female element of the ;

There is a representation, by the coupling face, of the female element of the ;

There is a representation, in an exploded and perspective view, of a wedge according to a particular embodiment of the present invention, in particular, this view makes it possible to observe the positioning of the first magnets;

There is a representation, in an exploded and perspective view, of a female element according to a particular embodiment of the present invention, in particular, this view makes it possible to observe the positioning of the second magnets;

There is a representation of a male element for a spring formed by a wire element;

There is a representation of a fixing device using a spring formed by a leaf spring;

There is a schematic representation according to a sectional plane comprising the elongation axis of a fixing device according to another advantageous embodiment of the present invention, the fixing device is in particular represented in this figure in an assembled configuration.

DETAILED DESCRIPTION OF THE INVENTION

The invention relates to a fixing device for reversibly joining a first part and a second part, the fixing device comprising:

- a male element configured to be in fixed or pivotal connection with the second part, the male element is provided with a retaining foot which extends along an elongation axis and which comprises at least one locking block which is 'extends laterally to the support leg and from a locking section of said support leg;

- a female element configured to be in fixed or pivotal connection with the first part, the female element comprising a coupling face, and through which opens a housing delimited laterally by an internal surface, the female element also comprises at least one counter -block placed on the internal surface of the housing;

the fixing device comprises guide means configured to guide the coupling of the female element with the male element according to two successive phases called, respectively, first phase and second phase and at the end of which the male element and the female element are coupled together, the first phase corresponding to the engagement of the retaining foot in the housing, according to a direction of engagement, by the coupling face according to a translational or helical movement, while the second phase allowing position the at least one locking block abutting against the at least one counter-block so as to prevent any disengagement of the retaining foot in a direction of disengagement opposite to the direction of engagement, the device comprises magnetic means and/or or elastics configured to oppose a rotational movement likely to lead to decoupling of the female element and the male element.

In particular and according to a particularly advantageous embodiment, the fixing device for reversibly joining a first part and a second part, the fixing device comprising:

- a male element configured to be in fixed or pivotal connection with the second part, the male element is provided with a retaining foot which extends along an elongation axis and which comprises at least one locking block which is 'extends laterally to the support leg and from a locking section of said support leg;

- a female element configured to be in fixed or pivotal connection with the first part, the female element comprising a coupling face, and through which opens a housing delimited laterally by an internal surface, the female element also comprises at least one counter -block placed on the internal surface of the housing;

the fixing device comprises guide means configured to guide the coupling of the female element and with the male element by engagement of the retaining foot in the housing by the coupling face, the coupling being carried out in two successive phases called, respectively, first phase and second phase, the first phase corresponding to the insertion of the retaining foot in the housing according to a first helical movement in a first direction of rotation and imposed by the guide means, while the second phase comprises a movement of rotation in a second direction of rotation opposite the first direction, imposed by the guide means, and making it possible to position the locking blocks in abutment against the counter-blocks, the device comprises magnetic and/or elastic means configured to oppose a rotational movement in a second direction opposite to the first direction.

The remainder of the description presents a particularly advantageous embodiment of the present invention. In particular, this embodiment uses a male element, a female element as well as a spacer. Said wedge is in particular configured to be assembled with the male element in order to form an intermediate element partly carrying guide means as well as magnetic means. However, these latter aspects should in no way limit the scope of the present invention, and those skilled in the art, simply reading the description, will be able to adapt the principles in particular to a fixing device without a shim.

There is a representation of a fixing device 1 according to an advantageous embodiment of the present invention.

In particular, the fixing device 1 comprises a male element 10, a female element 20 and a wedge 30. The fixing device 1 shown in includes the male and female elements as well as the wedge assembled together. However, this configuration should not limit the invention. In particular, it could be considered that at least one of these three elements can be isolated.

The fixing device 1 is configured to reversibly join a first part and a second part. The second part may be an attached part intended to provide additional functionality to the motor vehicle. In this regard, the is a schematic representation of the fixing device 1 to which a second part 2 is attached.

There is a schematic representation of the male element 10 isolated and in a perspective view. In this regard, the male element 10 comprises a retaining foot 11 of generally cylindrical shape. In particular, the holding foot 11 has an elongated shape along its elongation axis XX'.

The holding foot 11 comprises a free end 11a and a base 11b connected by a lateral surface 11c. The holding foot 11 furthermore comprises at least one locking block 12 on a locking section 13 of the holding foot 11. By way of example, the holding foot 11 may comprise a single locking block 12. Alternatively , the retaining foot 11 may comprise several locking blocks 12. According to this last scenario, the locking blocks 12 can be distributed, according to a constant angular pitch around the axis of elongation XX' of the retaining foot 11 .

It is understood without it being necessary to specify that the locking section 13 is a section of the lateral surface 11c of the retaining foot 11. More particularly, the locking blocks 12 extend radially relative to the 'elongation axis XX'.

On the , the retaining foot 11 comprises four locking blocks 12 distributed every 90°. However, this aspect is not likely to limit the invention, and those skilled in the art will be able to consider 2, 3, 5 locking blocks.

As shown in , the male element 10 may comprise a main section 14 of planar shape (in particular disc-shaped) which has an upper face 14a and a lower face 14b and from which the retaining foot 11 extends. More particularly, the retaining foot 11 extends, from its base 11b towards its free end 11a, from the lower face 14b.

Furthermore, each locking block 12 comprises in one direction, called the direction of extension going from the main section 14 towards the free end 11a of the holding foot 11, a locking face 12a and a free face 12b opposite the face locking 12a. In other words, the locking face 12a of a locking block 12 faces the lower face 14b.

As shown in , the locking section 13 can extend from the free end 11a. This last aspect is not imperative.

Always in relation to the , the male element 10 may comprise a handling handle 15 which extends from the upper face 14a.

Advantageously, the fixing device 1 can comprise a wedge 30 (illustrated in the and to the ) intended to be assembled, in fixed and removable connection, with the male element 10 to form an intermediate element 40 (illustrated in ) in which the retaining foot is in an assembly position.

Wedge 30 illustrated in and to the comprises in particular a first face 30a and a second face 30b parallel to each other and connected by a lateral surface 30c. The wedge also comprises a through passage 31 delimited by an internal wall 31a and opening through both the first face 30a and the second face 30b. The passage 31 is in particular configured to allow the engagement of the holding foot 11 in said passage 31 via the first face 30a in order to impose an assembly position on said holding foot. The assembly position is in particular a position for which the locking section 13 is in projection relative to the second face 30b, and the first face 30a and the lower face 14b are facing each other and at a non-zero distance D. one from the other.

This configuration makes it possible in particular to fix the second part to the intermediate element 40. In this regard, the second part 2 can comprise, on a flat section, a hole in which the retaining foot is engaged before assembling the male element with the wedge, advantageously the flat section has a thickness less than or equal to the distance D ( ).

The retaining foot 11 and the wedge 30 are also provided with means configured to prevent any relative rotation of the retaining foot 11 and the wedge when said retaining foot is in the assembly position. In particular, these means may include one (or more) groove 16 which extends on the lateral surface 11c and parallel to the axis of revolution of the retaining foot as well as a tongue 32 carried by the wedge 30 and inserting into groove 16.

It is understood that the tongue(s) 32 can extend internally (and in particular concentrically) to the passage 31.

Complementarily, the intermediate element 40 may also comprise latching means configured to prevent disengagement of the foot holding the passage. The latching means may in particular comprise a pawl 41 as well as a stop 42 for example arranged respectively on the wedge and on the retaining foot. More particularly, the pawl 41 can extend from the second face 30b while the stop 42 can be placed in one of the grooves 16 ( ).

The male element 10 can also include an angular stop 17 arranged to prevent any relative rotational movement between the retaining foot and the wedge when said retaining foot is in its assembly position.

The fixing device 1 also includes a female element 20 (illustrated in the ) configured to be in fixed or pivotal connection with the first part. The female element 20 can in particular be fixed to the first part by snap-fastening or by embedding (fixed connection).

The female element 20 comprises a coupling face 20a and through which a housing 22 opens. The housing 22 can in this respect have a symmetry of revolution around an axis of revolution (it will clearly appear in the remainder of the description that the The axis of revolution coincides with the axis of elongation when the male element and the female element are coupled together). The female element 20 may include a contour surface 20c. The female element 20 may also comprise attachment means configured to allow the embedding, for example by snap-fastening, of said female element 20 in the first part. The attachment means 21 can for example be arranged on the contour surface 20c.

The female element 20 can also include a rear face 20b opposite the coupling face 20a and parallel to the latter. In this last case, the housing can be through and open through the faces 20a and 20b.

The female element also comprises at least one counter-block 23 formed on an internal surface of the housing 22. By way of example, the female element 20 may comprise a single counter-block 23. Alternatively, the female element 20 can include several counter blocks 23. According to this last scenario, the counter locking blocks 12 can be distributed, according to a constant angular pitch around the axis of elongation XX' of the retaining foot 11. Always as a example, and without limiting the scope of the present invention, the female element can comprise as many counter-blocks as there are locking blocks arranged on the retaining foot 11. In other words, each locking block cooperates with a counter-block of its own.

A counter-block 23 comprises a bearing face 23a opposite the coupling face 20a (or accessible via the rear face 20b if the latter must be considered) and against which a locking face 12a of a locking block 12 is in support at the end of the second phase, said support preventing any disengagement of the support foot under the effect of an effort exerted in a direction opposite to the direction of extension ( ).

The fixing device 1 comprises guide means configured to guide the coupling of the female element 20 with the male element 10 by engagement of the retaining foot 11 in the housing 22 via the coupling face 21a. In particular, the guide means are configured to guide said coupling according to two successive phases called, respectively, first phase and second phase and at the end of which the male element 10 and the female element 20 are coupled together. By “coupled together”, we mean mechanically integral with each other.

According to the present invention, the first phase corresponds to the engagement of the retaining foot 11 in the housing 22, in a direction of engagement, by the coupling face 20a according to a translational or helical movement, while the second phase allows to position the at least one locking block 12 in abutment against the at least one counter-block 23 so as to prevent any disengagement of the retaining foot in a direction of disengagement opposite to the direction of engagement.

The direction of engagement according to the present invention designates the direction in which the retaining foot is engaged in the housing 22.

According to the embodiment considered, the guide means are arranged so that the first phase corresponds to a first helical movement, and so that the second phase corresponds to a rotational movement in a second direction of rotation around the axis elongation. The first helical movement comprising a translation movement according to the direction of engagement combined with a rotational movement according to a first direction of rotation around the axis of elongation and opposite to the second direction.

According to this scenario, the magnetic and/or elastic means are configured to oppose a rotational movement in the first direction as soon as the male element and the female element are coupled together.

According to the present invention, the guide means can be formed at least in part on the counter block 23. In this regard, the guide means can comprise an engagement face 23c which extends from the internal surface of the housing 22 and which connects the support face and another face of the counter block 23 opposite the support face. The engagement face 23c has in particular a helical shape and is configured to cooperate with the locking block 12. This cooperation imposes, during the execution of the first phase, the first helical movement on the holding foot 11 during the engagement of the latter in the housing 22 by sliding of the locking block 12 against the engagement face 23c.

The second phase can then be initiated. Thus, at the end of this second phase, the coupling face and the second face are in contact with each other. It is also understood that at the end of the second phase, the male element 10 is in a locked position. The locked position is in particular a position in which the locking block 12 abuts against the counter-block 23. In this regard, the abutment positioning of the locking block 12 against the counter-block 23 prevents any disengagement of the retaining foot of the housing 22 as soon as an effort aimed at disengaging said retaining foot 11 from said opening 22 by the coupling face 20a is exerted.

The fixing device also includes disassembly means configured to allow the decoupling of the male element and the female element. Decoupling involves in particular and in order a third phase and a fourth phase. The third phase comprises a rotation of the male element around the elongation axis according to the first direction of rotation, and the fourth phase comprises a second helical movement, the second helical movement comprising a translation movement in a direction opposite to the direction of engagement combined with a rotational movement according to the first direction of rotation around the axis of elongation.

The means of dismantling ( , And ) may comprise at least one disengagement pad 51 projecting relative to the second face 30b, and at least one disengagement recess 52 formed on the coupling face 20a. The disengagement recess 52 is configured to guide the coupling of the female element 20 with the male element 10 by sliding the disengagement stud 51 against a surface, called sliding surface 53, of the disengagement recess 52 and of so that at the end of the fourth phase the retaining foot is disengaged from housing 22.

In this regard, the sliding surface 53 comprises a first section 53a and a second section 53b, the first section 53a being of helical shape while the second section 53b being planar and parallel to the coupling face 20a. Thus, the third phase corresponds to a sliding of the disengagement pad against the second section 53b while the fourth phase corresponds to a sliding of the disengagement pad against the first section 53a ( ).

For example, the disassembly means may comprise a single disengagement pad 51. Alternatively, the disassembly means may comprise several disengagement pads 51. According to this last scenario, the disengagement pads 51 can be distributed , at a constant angular pitch around the axis of elongation XX' of the second face 20b.

Still by way of example, the disassembly means may comprise a single disengagement recess 52. Alternatively, the disassembly means may comprise several disengagement recesses 52. According to this last scenario, the disengagement recesses 52 may be distributed, according to a constant angular pitch around the elongation axis XX' on the coupling face.

It is understood that the first section and the second section of the sliding surface are continuous with each other. It is also understood that the sliding surface belongs to an annular portion of the female element, and in which the housing is circumscribed.

Thus, the execution of the third phase includes the rotation of the male element according to the first direction of rotation. During this rotation, the disengagement pin 51 slides on the second section 53b so that the locking block no longer abuts against the counter block. At the end of this rotation, the disengagement pad meets the first section 53a to continue its movement in the form of a helical movement by sliding of the disengagement pad against the first section 53a (fourth phase). At the end of the fourth phase, the male element is separated from the female element.

The fixing device also comprises magnetic and/or elastic means configured to oppose a rotational movement in the first direction. In particular, these magnetic and/or elastic means are configured to maintain the fixing device in the locked position.

In particular, the magnetic means may comprise a first series of magnets 54 and a second series of magnets 55 arranged, respectively, in the spacer 30 and in the female element 20. The first series of magnet 54 comprises first magnets 54a while the second series of magnets 55 comprises second magnets 55a. The first series of magnets 54 and the second series of magnets 55 are configured so that a reciprocal attraction force is exerted in an increasing manner between the wedge and the female element during the execution of the first phase then of the second phase. In other words, the first magnets 54a and the second lovers 55a are positioned so that the magnetic attraction increases as the first phase and the second phase progress.

Thus, and advantageously, the first magnets 54a ( ) are distributed at a constant angular pitch around the axis of revolution of the passage. Equivalently, the second magnets 54a ( ) are distributed according to the angular pitch around the axis of revolution of the housing. In addition, the first magnets 54a and the second magnets 55a all have a magnetic polarity perpendicular to the second face and oriented in the same direction at the end of the second phase. Finally, each first magnet 54a is advantageously located directly above a second magnet 54a at the end of the second phase.

Always in an advantageous manner, and as illustrated in , the wedge 30 can form a housing which comprises a main part 52a and a cover 52b (both of annular shape). In particular, the main part 52a is delimited by the lateral surface 30c as well as the second face 30b, and forms a housing for the first magnets 54a. The cover 52b is configured to cover the housing by the first face 30a. The cover is advantageously made of a magnetic material adapted to concentrate and orient the magnetic field created by the first magnets 54a.

Equivalently, and as illustrated in , the female element 20 can form a housing which comprises a formwork 53a and a base 53b. In particular, the formwork 53a is delimited by the contour surface 20c as well as by the coupling face 20a, and forms a housing for the second magnets 51a. The base 53b is configured to cover the housing via the rear face 20b. The base is advantageously made of a magnetic material adapted to concentrate and orient the magnetic field created by the second magnets 55a.

The elastic means can advantageously comprise a spring 60 configured to partly support on the one hand against the second part and on the other hand against the male element. In this regard, the spring may comprise a wire element ( ) or a blade spring ( ).

The fixing device as described above makes it possible to join a first part and a second part in different orientations.

Furthermore, the fixing device remains tolerant in terms of positioning of the male element with respect to the female element.

The present invention also relates to another embodiment. In particular, in the context of this other mode, the holding foot and the guiding means are configured so that the first phase includes a translation according to the direction of engagement.

In this regard, the support foot, as illustrated in comprises two flexible arms 11f which extend parallel to the axis of elongation and which are each terminated by a locking block 12. Each locking block 12 can accommodate a first magnet 54a.

The opening 22 of the female element comprises an internal surface in which cavities forming the counter blocks 23 are formed. Thus, during the first phase, the retaining foot is engaged in the opening. During this engagement, the two flexible arms deform and the locking blocks slide against the internal surface. As soon as each locking block meets a counter block, the second phase engages and said locking blocks are each inserted into a cavity forming a counter block so that the flexible arms return to their initial shape. The positioning of the second magnets at the bottom of the cavities makes it possible, by magnetic interaction with the first magnets, to maintain the retaining foot in the locked position. A spring element can be implemented to help the flexible arms return to their original shape.

The disassembly means can be configured so that the third phase includes a rotation and the fourth phase is executed in a movement opposite to that of the first phase.

Thus, the disassembly means may comprise a guide trench perpendicular to the axis of revolution formed on the internal surface and which extends from a cavity forming a counter block. More particularly, the depth of the guide trench can decrease regularly from the cavity. In particular, the depth of the guide trench can be canceled after a predetermined angular displacement measured from the cavity.

Thus, when executing the third phase (to decouple the female and male elements) includes a rotation. During this rotation, the locking blocks each slide against a trench and thus impose a deformation of the flexible arms. Once the locking blocks are out of the trenches, the fourth phase can begin. In this regard, this includes an extraction of the opening locking foot by a translation movement.

The fixing device is advantageously used to fix permanent elements such as bumpers to a motor vehicle. The invention can also be implemented to fix structural elements of the vehicle in question, or even elements capable of being temporarily fixed inside and outside. Among the latter, we can cite: interior or exterior cladding panels, structural elements.

The invention can also be implemented to temporarily fix interior and exterior elements including: a fixing system for smartphone, tablet, cup holder, notepad, PC support, ashtray, hitch socket, bicycle rack, wallet, toll ticket, miscellaneous storage, basket, hook for handbag, coat rack support, trunk compartment for holding luggage, hook for fastening in the trunk for safety net, grille for dogs, spare wheel holder, floor mats, trunk mats, removable or interchangeable trim elements, door decoration type, door bins, baby seat, booster seat, aviation type tablets for rear passengers, modular center console, bench seat modular, Sun visor

The invention can also be implemented for the mobile interior arrangement of an autonomous vehicle, for example to attach movable seats, a retractable steering wheel

The invention can also be implemented for the arrangement of a utility vehicle (shelves, storage, partitions, tool holders, etc.).

The invention can also be implemented for the arrangement of heavy goods vehicle cabins (privacy curtains, lift-up berth, storage, TV support, etc.).

The invention can also be implemented for exterior fittings, in particular for a towing socket, a tie-down hook, a roof box, a roof bar, roof or gallery spotlights, a wheel carrier emergency, an aerodynamic spoiler, a decoration, an advertisement, a bicycle rack, a trunk rack,

The invention can also be implemented to attach temporary protection (bull bar, optical protection grille, radiator protection, door strip).

The invention can also be implemented in the field of heavy goods vehicles (connections between the trailer and the tractor for braking, electricity, etc.).

The invention can also be implemented in the field of industrial or agricultural vehicles (fixing additional accessories or tools).

The invention can also be implemented in the field of motorcycles or 2-wheelers (mounting trunk, tank bag, grab handles, additional saddle, etc.).

Of course, the invention is not limited to the embodiments described and alternative embodiments can be made without departing from the scope of the invention as defined by the claims.

Claims (18)

Fixing device (1) for reversibly joining a first part and a second part (2), the fixing device (1) comprising:
- a male element (10) configured to be in fixed or pivotal connection with the second part (2), the male element (10) is provided with a retaining foot (11) which extends along an axis of elongation and which comprises at least one locking block (12) which extends laterally from the retaining foot and from a locking section (13) of said retaining foot (11);
- a female element (20) configured to be in fixed or pivotal connection with the first part, the female element (20) comprising a coupling face (20a), and through which opens a housing (22) delimited laterally by a surface internal, the female element (20) also comprises at least one counter-block (23) disposed on the internal surface of the housing (22);
the fixing device (1) comprises guide means configured to guide the coupling of the female element (20) with the male element (10) according to two successive phases called, respectively, first phase and second phase and at from which the male element and the female element are coupled together, the first phase corresponding to the engagement of the retaining foot (11) in the housing (22), in a direction of engagement, by the coupling face (20a) according to a translational or helical movement, while the second phase makes it possible to position the at least one locking block (12) in abutment against the at least one counter-block (23) so as to prevent any disengagement of the holding foot in a direction of disengagement opposite to the direction of engagement, the device comprises magnetic and/or elastic means configured to oppose a rotational movement likely to lead to a decoupling of the female element and the male element. Fixing device (1) according to claim 1, in which the retaining foot (11) is of generally cylindrical shape around the axis of elongation, while the internal surface of the housing (22) has a symmetry of revolution around of an axis of revolution, the axis of revolution being coincident with the axis of elongation when the male element and the female element are coupled together. Fixing device (1) according to claim 2, in which the guide means are arranged so that the first phase corresponds to a first helical movement, and so that the second phase corresponds to a rotational movement in a second direction of rotation around the axis of elongation, the first helical movement comprising a translation movement in the direction of engagement combined with a rotational movement in a first direction of rotation around the axis of elongation and opposite to the second direction . Fixing device (1) according to claim 3, in which the magnetic and/or elastic means are configured to oppose a rotational movement in the first direction as soon as the male element and the female element are coupled between each other. them. Fixing device (1) according to claim 3 or 4, in which the male element (10) comprises a main section (14) of planar shape which has an upper face (14a) and a lower face (14b) and from from which the holding foot (11) extends, the locking section (13) of the holding foot (11) extending from a free end (11a) of said holding foot (11). Fixing device (1) according to claim 5, in which said fixing device (1) further comprises a wedge (30) intended to be assembled, in fixed and removable connection, with the male element (10) to form a intermediate element (40) in which the retaining foot (11) is in an assembly position, the wedge (30) comprising a first face (30a) and a second face (30b) parallel to each other and through which a through passage (31) delimited by an internal wall, the passage (31) is in particular configured to allow the engagement of the retaining foot (11) in said passage (31) by the first face (30a) in order to impose on said foot holding (11) the assembly position, the assembly position being a position for which the locking section (13) is in projection relative to the second face (30b), and the first face (30a) and the lower face (14b) are facing each other and at a non-zero distance D from each other. Fixing device (1) according to claim 6, in which the retaining foot (11) comprises a groove (16) which extends over the entire length of said retaining foot (11) and which cooperates with a tongue (32) formed on the wedge (30) so as to prevent any relative rotation of the retaining foot (11) relative to the wedge (30) when said retaining foot (11) is in the assembly position. Fixing device (1) according to claim 6 or 7, in which the intermediate element (40) comprises latching means configured to prevent disengagement of the retaining foot (11) from the passage (31) when said retaining foot (11) is in the assembly position. Fixing device (1) according to one of claims 6 to 8, in which said device comprises disassembly means configured to allow the decoupling of the male element and the female element, said decoupling involving in order a third phase and a fourth phase, the third phase comprising a rotation of the male element around the axis of elongation according to the first direction of rotation, and the fourth phase comprising a second helical movement, the second helical movement comprising a movement of translation in a direction opposite to the direction of engagement combined with a rotational movement in the first direction of rotation around the axis of elongation. Fixing device (1) according to claim 9, in which the disassembly means comprise at least one disengagement stud (51) projecting relative to the second face (30b), the disassembly means also comprise at least one recess of disengagement (52) formed on the coupling face (20a), the disengagement recess (52) being configured to guide the coupling of the female element (20) with the male element (10) by sliding of the disengagement pad (51) against a surface, called sliding surface (53), of the disengagement recess (52) and so that at the end of the fourth phase the retaining foot is disengaged from the housing (22). Fastening device (1) according to claim 10, wherein the sliding surface (53) comprises a first section (53a) and a second section (53b), the first section (53a) being of helical shape while the second section (53b) being plane and parallel to the coupling face (20a), the third phase corresponding to a sliding of the disengagement pad against the second section (53b) while the fourth phase corresponds to a sliding of the disengagement pad against the first section (53a). Fixing device (1) according to one of claims 3 to 11, in which the at least one locking block (12), in one direction, called the direction of extension, going from the main section (14) towards the the free end (11a) of the retaining foot (11) comprises a locking face and a free face opposite the locking face, while the at least one counter-block (23) comprises an opposite support face to the coupling face (20a) and against which a locking face is supported at the end of the second phase, said support preventing any disengagement of the retaining foot (11) under the effect of a force exerted according to a meaning opposite to the meaning of commitment. Fastening device (1) according to claim 12, in which the at least one counter-block (23) comprises an engagement face which extends from the internal surface of the housing (22), and which connects the support face and another face of the counter-block (23) opposite the support face, said engagement face having a helical shape and configured to cooperate with the locking block (12), said cooperation imposing, during the first phase, the first helical movement of the retaining foot (11) during engagement of the latter in the housing (22) by sliding of the locking block (12) against the engagement face. Fixing device (1) according to one of claims 3 to 13, in which the magnetic means comprise a first series of magnets (54) and a second series of magnets (55) arranged, respectively, in the wedge (30 ) and in the female element (20). Fixing device (1) according to one of claims 9 to 12 and claim 14, in which the first series of magnets (54) and the second series of magnets (55) are arranged so that a force d attraction is exerted between the first series of magnets and the second magnet at the end of the second phase, and so that a repulsion force is exerted between the first series of magnets and the second magnets at the end of the fourth phase. Fixing device (1) according to claim 6 and claim 14 or 15, in which the second part (2) comprises, on a flat section, a hole in which the retaining foot (11) is engaged before assembling the male element (10) with the wedge (30), advantageously the flat section has a thickness less than or equal to the distance D. Fixing device (1) according to one of claims 3 to 16, in which the elastic means comprise a spring configured to partly bear against the second part (2). Motor vehicle provided with at least one fixing device (1) according to one of claims 1 to 17 used to fix said vehicle, forming the first part, the second part (2), the second advantageously comprising a system of nomadic attachment, particularly for mobile phones or even a roof bar.