Patent Description:
In modern vehicle architecture, there is often a need to provide a mounting or support for mounting an electronic device or an electronic module. To mount the electronic device to the vehicle, a bracket is provided to hold it in proper position. Some electronic devices or electronic module have their own housing and mounting features. To be able to integrate such devices to the vehicle, some current arrangements require two-piece brackets. Mostly one plastic bracket, which holds the device, and one metal bracket, which will be fixed to the vehicle. The two brackets may be interfaced by means of an alignment screw and additional fixing points. The interface between the plastic bracket which holds electronic device and the metal bracket screwed to the vehicle may use a steel pin. There are some disadvantages to the arrangement including cost disadvantages, expense and the arrangement is often over engineered. The arrangement using the steel pin also emits noise due to vibrations due to the design. Therefore, there is a need to provide an alternative interface arrangement that overcomes the above drawbacks of the current arrangements for mounting an electronic device or electronic module, to a vehicle. Published prior art examples include: <CIT>, <CIT> and <CIT>.

It will be appreciated that the scope of the invention is in accordance with the claims. Accordingly, a system as defined in independent claim <NUM> are provided. Further optional features are provided in accordance with the dependent claims.

According to the specification there is provided a mounting system configured to mount an electronic device or electronic module to a vehicle, the mounting system comprising:.

The mounting systems according to arrangements of the specification provide for a secure and robust attachment between the mounting plate and the device support plate and for mounting an electronic device or electronic module to a vehicle. The arrangements of the specification address problems with previous approaches. The fastening element and receiver of the connector are formed to conform and to provide controlled forces therebetween based on their interaction. The connector is flexible. As portions of the connector wall are displaced by application of force by the fastening element, they flex and are engaged more tightly with a corresponding coupling portion of the base mounting plate. The interactions are effective in securing the coupling are provided at multiple regions. The application of controlled forces including in the axial, radial directions provide flexing and bending and torque and forces arising from torque which provide tightening and robustness.

According to one aspect, the base mounting plate comprises at least one bracket for coupling to the device support plate; and a corresponding connector of the device support plate comprises a bracket connector member for coupling to the first base mounting plate at the bracket.

The connector of the device support plate comprises a bracket connector member formed recessed in the external peripheral surface of the wall of the connector, and the receiver formed extending through the internal peripheral surface of the wall. The connector is therefore the common component to the coupling of firstly the connector and bracket and secondly of the connector and fastening element. This provides a compact common coupling and supports interaction between all three components at each coupled joint.

According to another aspect the bracket connector member comprises a circumferential channel formed recessed relative to an external peripheral surface of the wall of the connector; and wherein the bracket and the bracket connector member are formed and dimensioned such that a portion of the bracket is receivable in the circumferential channel when the connector in snap-fitted into the bracket.

The bracket and connector are configured for coupling in two-steps. In an initial step, the bracket and connector are coupled by snap-fitting. The base mounting plate is relatively rigid and the connector of the device support plate is configured to allow flexing. The interface between two plates is defined by the bracket, connector, and fastening element. When the fastening element is pushed into the flexible connector, the wall of the connector effectively spreads or expands in response and the flexible connector is moved against the more rigid bracket at the bracket connector member and channel.

In one arrangement the connector and bracket are configured for coupling in a direction orthogonal (Z) to the central longitudinal axis (X) of the connector, and the fastening element and connector are configured for coupling in the direction of the central longitudinal axis, and wherein when engaged the fastening element and connector, and the bracket and bracket connector member are arranged concentrically around the central longitudinal axis of the connector.

The mounting system is based on a three-way interaction of the concentrically coupled components, which are configured to provide, by their interaction, controlled forces which act therebetween to secure the mounting by interlocking the connecting features. The controlled forces are provided by the direct interaction of the fastening element and receiver of the connector and a resultant flexing and bending of the connector wall in directions generally radially outwardly to tighten and secure the bracket connector member in the bracket. The tightening provides for an interlocking of the bracket located in the bracket connection member. The engagement between the fastening element and receiver is circumferential as is the engagement between the bracket and connector. By virtue of the circumferential coupling, movement of the plates about the axis of connector or coupled joint, is still possible to adjust the vertical angle alignment of the electronic device.

According to arrangement of the specification, the plurality of resilient wall portions are spaced apart by slots, the wall portions and slots extending in the longitudinal direction.

The wall of the connector is configured to be flexible or resilient by virtue of the configuration of the portions of the wall. The resilience may also result from the properties of the material of the wall. Therefore, the connection between the plates also has resilience. The fastening element is configured also as an expansion element, and the external peripheral surfaces of the engagement members are configured to bear in close contact with corresponding countersurfaces of the receiver, which are displaced or flex as a result.

In one arrangement the wall portion of the connector is displaced outwardly relative to central longitudinal axis of the receiver.

The connector is configured to have some flexibility. The forces arising from the interaction of the fastening element and receiver provides for a flexing and bending of the connector wall. The forces include forces directed generally outwardly relative to the central axis of the coupling. These forces which include forces near the proximal end of the receiver also provide for a bending of the connector and torque.

According to another arrangement each fastening element and corresponding receiver comprises conforming mating features for controlling forces therebetween when engaged, the forces resulting from the interaction of the fastening element and the receiver including forces F3, F4 in opposing axial directions (X) which act to maintain the fastening element in the receiver.

The fastening element and receiver of the connector are formed to conform and provide controlled forces based on their interaction, including forces in the axial direction. The opposing forces in the axial direction arising from the interaction of the fastening element at predefined locations act to retain the fastening element in the receiver and to resist pull-out.

In another arrangement, the forces resulting from the interaction of the fastening element and the receiver include forces which are provided in directions generally radial to the central axis, and which act to provide displacement of the connector wall outwardly with respect to the central longitudinal axis, and to thereby provide an interlocking of the base mounting plate at the device support plate, at the connector and the bracket. The arrangement is such that there is flexing, bending, and tightening of the coupling of the bracket and channel.

The controlled forces are provided by the direct interaction of the fastening element and receiver of the connector and a resultant flexing of the connector wall in directions radially outwardly to tighten and secure the bracket connector member in the bracket. The forces are provided further directed outwardly circumferentially.

In one arrangement, the fastening element comprises an elongated body that extends from a head portion at a proximal end to a tip at a distal end, and a first engagement member having a body of generally spherical or ovoid form, and wherein the mating surface thereof is configured to be engaged in a retainer of the receiver, and a second engagement member having a body of generally cylindrical form, wherein the first and second engagement members are in use circumferentially engaged with the receiver at axially spaced apart locations.

The fastening elements of the embodiments of the specification and the corresponding receivers are formed to conform and each arranged to engage at the peripheral surfaces circumferentially. Portions of the fastening element have a radial extent conforming with that of the receiver. The mating surfaces are configured to be clamped in contact when in the engaged position. The specification provides fastening elements having a portion of spherical, or ovoid form and other portions of cylindrical or tapered cylindrical form. The mating surfaces defined by the external peripheral surfaces of the first and second engagement members, may be arranged inclined relative to the central longitudinal axis of the fastening element. The corresponding portions of the internal peripheral surfaces of the receiver are inclined for conformity.

In another arrangement the receiver comprises a guide portion and a retainer each configured to engage corresponding engagement portions of the fastening element, wherein the guide portion comprises a tapered guide portion that extends between the opening and the retainer.

In a further arrangement the retainer comprises:
a circumferential ridge which projects into the receiver relative to the internal peripheral wall, and a recess provided adjacent to the ridge, wherein the form of the retainer conforms with a corresponding engagement member of the fastening element.

The receiver may comprise a retainer such as a recess for retaining the fastening element. The form of the recess depends on the forms of the corresponding engagement member of the fastener.

In one arrangement the fastening element and connector are configured such that the forces between said features include radial forces (F1 and F2) resulting from the interaction of the engagement portions of the fastening element and corresponding portions of the internal peripheral wall of the receiver are applied to the connector wall at axial locations either side of the channel to thereby provide for a tightening of the connections between the bracket and the channel.

In another arrangement, the bracket connector member and channel are located adjacent to and externally of the retainer of the receiver, the bracket connector member and channel formed in the external peripheral surface of the connector, and the retainer formed in the internal peripheral surface.

In one arrangement the mounting system is configured such that when coupled the device support plate and the base mounting plate are configured to contact only at the couplings between the brackets and corresponding connectors.

The plates when coupled and interlocked are maintained at a separation from each other and the coupling is located therebetween. The coupling is provided between the plates at connections that have some resilience.

In another arrangement, the device support plate comprises first and second connectors configured for coupling with corresponding first and second brackets of a base mounting plate; wherein said first and second bracket and connector pairs when coupled are arranged in alignment about a common axis; and each connector and bracket being configured to allow rotation of one of said plates relative to the other about the common axis when coupled at the bracket and connector, and when fastened with a fastening element.

The arrangement of the mounting system provides for tilting or rotation of one of the plates relative to the other. The mounting system may further include a connector and bracket pair that is not in alignment with another connector and bracket pair. In this case, when the plates at connected at two non-aligned connector and bracket pair, the arrangement is static, tilting is not supported.

The following drawings are provided as an example to explain further and describe various aspects of the present disclosure:.

The following discussion provides examples useful for explaining the nature of the invention.

For simplicity and clarity of illustration, reference numerals may be repeated among the Figures to indicate corresponding or analogous elements. Numerous details are set forth to provide an understanding of the examples described herein. The examples may be practised without these details. In other instances, well-known methods, procedures, and components are not described in detail to avoid obscuring the examples described. The description is not to be considered as limiting to the scope of the examples described herein.

<FIG> shows a common type of mounting system <NUM> for mounting an electronic component or electronic module to a vehicle. In the arrangement shown, two mounting members <NUM>, <NUM> are provided. One of the mounting members <NUM>, is arranged to hold the electronic device and the other <NUM> for mounting to the vehicle by a suitable fixing means. The mounting member <NUM> for holding the electronic device is of a plastic material and the mounting member <NUM> for mounting to the vehicle is typically of a rigid material such as a metal. To interface the two members such that they are coupled and held together, an alignment screw <NUM> and additional fixing means <NUM> are provided. There are problems associated with mounting electronic devices to a vehicle including that such an arrangement is often prone to emitting noises due to vibrations when used on a vehicle.

To overcome such disadvantages and provide an improved mounting system, arrangements according to the specification for mounting an electronic device or an electronic module to a vehicle are provided.

Referring to <FIG> exemplary mounting systems <NUM> and <NUM>, <NUM> for mounting an electronic device to a vehicle, are described.

Referring initially to <FIG> and <FIG>, a mounting system <NUM> is described. The mounting system <NUM> comprises a first base mounting plate <NUM>, a second device support plate <NUM>, and third fastening elements <NUM>. The base mounting plate <NUM> is configured for mounting to a vehicle V and for connecting the device support plate <NUM> to the vehicle. The device support plate <NUM> is mountable to the base plate <NUM> and configured to receive and support an electronic device D. The mounting system <NUM> is essentially a three-part mounting system wherein the fastening elements are provided to secure the device support plate <NUM> to the base mounting plate <NUM>.

The base mounting plate <NUM> comprises a first surface <NUM> configured to be vehicle facing (direction V) in use and a second surface <NUM> configured to be device facing (direction D) in use, in the arrangement shown. The base mounting plate <NUM> extends longitudinally (in the X direction) between first and second ends <NUM>, <NUM> which extend between upper and lower longitudinal side edges <NUM> and <NUM> of the plate. The base mounting plate <NUM> is configured to be fixed to the vehicle. The fixing may be by any suitable fixing means. The base mounting plate <NUM> is comprised of material that provides rigidity. The base mounting plate may be comprised of a metal material such as for example, Aluminum or steel. However, it will be appreciated that any suitable material having the required rigidity may be used. The base mounting plate <NUM> comprises first and second brackets <NUM>. The brackets are configured for coupling with a corresponding member of the device support plates. The brackets <NUM> in the arrangement of <FIG> are located longitudinally spaced apart and extending outwardly from, and in a direction (Z) transverse to, the device facing surface <NUM> of the plate (the plate is shown in an in-use orientation in an X-Y plane in the drawings). The brackets <NUM> have arms <NUM> which define an opening <NUM> therebetween, and a receiver <NUM>. The receivers <NUM> of the brackets <NUM> are arranged about a central longitudinal extending axis <NUM> (extending in the X-direction). The arms <NUM> are curved and the receiver <NUM> is generally circular or c-shaped in form, in cross-section. An internal peripheral surface <NUM> of the arms <NUM> defines a mating surface for mating with a corresponding feature of the connector <NUM>. The brackets are rigid brackets. The brackets are formed integrally with the plate and are comprised of the same material. The brackets <NUM> may be formed at cut-outs in the plate and may be shaped therefrom (see for example <FIG>), alternatively the brackets may be welded or glued to the plate. The central axis <NUM> of the brackets <NUM> and the receivers <NUM> is located substantially parallel to the central longitudinal axis of the surface <NUM> of the plate <NUM>. In the exemplary arrangement of <FIG>, the brackets <NUM> further comprise outer supports <NUM>, <NUM>, that extend transversely relative to the surface of the plate at lateral side ends <NUM> and <NUM>. The first and second brackets <NUM> extend outwardly from the surface of the plate <NUM> and outer supports <NUM>, <NUM> of each of the brackets extends substantially the width of the plate at the base thereof. The outer support <NUM> may taper inwardly relative to the base at the opening.

Accordingly, in the arrangement of <FIG>, each receiver <NUM> is located centrally relative to the surface of the base mounting plate <NUM>, and centrally relative to the brackets <NUM>. This arrangement provides an improved stability in the mounting of the plates to each other and of the electronic device to the vehicle.

The device support plate <NUM> comprises a first surface <NUM> configured to be vehicle facing in use (direction V) and a second surface <NUM> configured to be device facing in use (direction D). As shown in the drawings, the support plate <NUM> extends longitudinally (in the X-direction) between first and second ends <NUM> and <NUM> thereof and an upper longitudinal side <NUM> and a lower longitudinal side <NUM>. Similar to the base mounting plate <NUM>, the surfaces of the support plate <NUM> are arranged oriented in an X-Y plane, in an in use orientation, of the exemplary arrangement as shown in the drawings. In use, an electronic device or electronic housing may be coupled to the device support plate to mount it to the vehicle via the mounting system.

The support plate <NUM> comprises first and second connectors <NUM>. The connectors <NUM> are configured to provide for connection of the support plate <NUM> to the base mounting plate <NUM> at the brackets <NUM>. The connectors <NUM> and the brackets <NUM> are formed for conformity, and have corresponding mating features configured to interact, to facilitate the engagement of the connector of the support plate with the bracket of the base plate, as required.

In the arrangement of <FIG>, the first and second connectors are located longitudinally spaced apart generally near opposing side ends <NUM> and <NUM> of the plate <NUM>. The connectors <NUM> comprise a connector body <NUM> having a generally cylindrical form, or of generally circular form in lateral cross-section. The connector body <NUM> comprises a wall portion <NUM> and a base portion <NUM>. The connector body <NUM> is defined by the wall <NUM>. A central axis <NUM> of each connector <NUM> is arranged in the direction of the longitudinal axis (X-direction) of the support plate. The connectors <NUM> are connected to the plate <NUM> by means of a support <NUM>. The support <NUM> is arranged extending outwardly from, and in a direction (minus Z-direction in the drawings) transverse to, the vehicle facing surface <NUM> of the plate <NUM> (the plate is shown in an exemplary in use orientation in an X-Y plane in the drawings). The connectors <NUM> are connected to the support at the base portion <NUM> thereof and extend in a direction essentially parallel to the plate.

The device support plate <NUM> may be comprised of a plastics material. However, it will be appreciated that any suitable material may be used. The device support plate and connectors are preferably formed of the same material to allow manufacturing using a common manufacturing arrangement. The connectors <NUM> of the device support plate <NUM> are configured to have flexibility and resilience. These properties may be achieved by the selection of material of the connectors but also by the form and configuration thereof, described further below.

The wall <NUM> of the connector is configured by virtue of the form thereof and in addition or alternatively by the selection of the material thereof, to have some resilience and to support flexing. The connectors <NUM> are further configured for coupling with fastening elements <NUM>. Each connector comprises a receiver <NUM> which is defined by a channel formed internally through the connector body <NUM>, from an opening <NUM> to the base portion <NUM> and configured for receiving fastening elements <NUM>.

Referring to <FIG> and <FIG>, the mating features of the brackets <NUM> and the corresponding features of the connectors <NUM> are described in more detail. An external peripheral surface <NUM> of said connector wall <NUM> comprises a bracket connector member <NUM> for coupling at a corresponding bracket <NUM>. The bracket connector member <NUM> comprises a circumferential channel <NUM>. The channel <NUM> is recessed from the external peripheral surface <NUM> of the connector <NUM>. The channel <NUM> has a generally U-shaped channel form. The features of the channel <NUM> including depth and width are selected to conform with the mating portion of the bracket.

Referring to <FIG>, the arms <NUM> of the bracket <NUM> comprise locking elements <NUM> on each side of the opening <NUM>. The arms <NUM> further comprise guide portions <NUM> which taper outwardly relative to the opening <NUM> and receiver <NUM> and which define a second locator opening <NUM>'. The locator opening <NUM>' is external to the receiver opening <NUM> and is wider. Together the guide portions <NUM> assist in locating a connector <NUM> of a support plate <NUM> into the receiver <NUM>. The internal surface wall <NUM> of the arms <NUM> defines a mating surface for mating with a connector <NUM>. The internal surface wall <NUM> extends circumferentially around the central axis <NUM> of the bracket receivers <NUM>. The internal peripheral surface <NUM> of the arms <NUM> defines the receiver <NUM> having a radius r1 and a length T1 (<FIG>) in the axial direction <NUM>.

To assemble the support plate <NUM> to the base plate <NUM>, the bracket connector member <NUM> is brought into proximity with the bracket <NUM> and the channel <NUM> is aligned with the arms <NUM> of the bracket (see <FIG> and <FIG>). The connector <NUM> is snap-fitted or push-fitted into the bracket <NUM> at the bracket connector member <NUM> (see <FIG>). The wall <NUM> of the connector is resilient and flexes for snap-fitting into the bracket. When the connector <NUM> is in an inserted position in the receiver <NUM> of the bracket <NUM>, bracket arms <NUM> are then located in the channel <NUM>. When coupled the internal peripheral surface <NUM> of the bracket <NUM> is located in the channel <NUM> and in contact with the base of the channel.

As shown in exemplary arrangement of <FIG>, the wall <NUM> of the connector comprises the end wall members <NUM> spaced apart circumferentially about the opening <NUM>. The end wall members <NUM> are located proximally of the bracket connector member <NUM> and channel <NUM> and separated by slots <NUM>.

When the support plate <NUM> and mounting plate <NUM> are coupled, the axis <NUM> through the receivers <NUM> of brackets <NUM> and the axis <NUM> of the connectors <NUM> and fastening elements <NUM> are brought into alignment. When aligned and coupled, the fastening elements <NUM>, the receivers <NUM>, the bracket connector members <NUM> and channels <NUM>, and the brackets <NUM> are all concentrically arranged around the central longitudinal axis (<NUM>, <NUM>) of the coupling. These concentrically arranged features define the couplings between the plates. Each coupling is essentially a dual layer coupling or two-way coupling.

As noted above, in the exemplary arrangement of <FIG> the two plates are coupled about a common longitudinal axis, through the two brackets, connectors, and fastening element. This arrangement provides further advantages of the mounting system <NUM>. In particular, by virtue of the arrangement of the coupling of the mounting system about a common axis, is possible to change the angle or tilt of one of the plates relative to the other by rotating it or moving it about the coupling. The coupling is tightly engaged when fastened however, with the application of force it is possible to provide some tilting. It is also possible to provide tilting or rotation about the common axis at the bracket to connector coupling, before the fastening elements are engaged in the connectors. This arrangement is advantageous for allowing accurate positioning an electronic device or electronic module on a vehicle. It is possible to further adjust the position of tilt of one of the plates relative to the second in situ at the vehicle, when one of the plates has been fixed to the vehicle and the other coupled to the first.

In the exemplary arrangement of <FIG>, the central longitudinal axes of the coupling are located centrally between the plates and in alignment with the central longitudinal axes of the plates. In this arrangement, there is no surface to surface contact between the plates, the contact between the plates is at the coupling of the connector members and bracket members only. The plates <NUM> and <NUM> are spaced apart from each other and the coupling is located between the plates.

The plates, in the arrangement of <FIG>, are therefore advantageously coupled at the connectors and brackets only. The connectors by their form and configuration are resilient and have some flexibility to allow for ease of assembly. When the three components, namely the fastening elements, connectors, and brackets are engaged, the connectors are then effectively retained in a rigid fastened position between the two more rigid components on with side of the connector wall.

Further, in the exemplary arrangement of <FIG> when coupled the surfaces of the two plates are located offset longitudinally to each other. The ends of the plates are not aligned. The plates are offset by a distance related to the location of the bracket connector member of the connector <NUM>. In the arrangement of <FIG>, the connectors <NUM> are both located to the left-hand side of the connector supports <NUM> and the receivers are arranged in the same direction - such that both fastening elements are inserted from the left.

It will be appreciated that the direction of the connectors and the receivers may be arranged differently, for example as shown in <FIG> which provides that both receivers are arranged in opposing directions and the fastening elements are inserted from opposite sides of the plates.

While the base mounting plate and device support plate are shown in a particular exemplary arrangement and orientation in <FIG>, it will be appreciated that they may also be provided in different in use arrangements, as may be required for different applications. Similarly, while each plate of the arrangements of <FIG> has two brackets and two corresponding connectors, it will be appreciated that the form of the plates may be different from that of the example and a different number of brackets or connectors may be provided. Further, the brackets and connectors may be located at different parts of the plates than shown in the exemplary drawings.

While the arrangement including two brackets and connectors in alignment about a common axis (X) allows for tilting of the plates relative to each other about the coupling, the mounting system <NUM> may comprise at least one further bracket and corresponding connector pair at a different location on the plate and not aligned with said common axis. While the mounting system when connected at aligned couplings, as shown in <FIG>, is configured to provide some relative tilting or rotation about the couplings. If the plates are coupled including at a non-aligned bracket and corresponding connector pair, then the relative positions and angles of the plates will be fixed and static (see exemplary arrangement of <FIG>).

In the non-fastened position, the connector <NUM> is configured to flex and to have resilience. In particular, the arrangement provides for flexing of the wall portion <NUM> so that the connector <NUM> can be inserted into the bracket <NUM>, and further allows flexing at the wall <NUM> so that the fastening element <NUM> can be inserted into the receiver <NUM>.

In the fastened position, all three parts of the coupling of the mounting system are engaged and tightened. When engaged, the connector wall <NUM> is effectively located between the fastening element and bracket i.e. between two relatively rigid parts and as a result, no longer flexes in the manner that it can in the non-fastened positioned. Rather, when all three parts (bracket, connector and fastening element) are engaged the interfaces between these components are tightened. As a result, the components are interlocked and the mating surfaces and counter surfaces are effectively clamped or tightly engaged.

The fastening element, the connector, and receiver are all formed for mating and comprise corresponding features. The form and features and dimensions of each are provided to provide secure fastening of the fastening element in the fastened position of the receiver. Further the form, features and dimensions of each are provided to allow the controlled application of forces for interlocking of the coupled bracket and bracket connector member of the connector. Further the layers of each component at the coupling i.e. the innermost fastening element, which is surrounded the connector which in turn is surrounded by the bracket are concentric and the engaged circumferentially. The coupling is therefore about a common axis and the circumferentially engaged components advantageously allow for some rotational movement about the common axis.

The securing of the mounting system <NUM> to the vehicle and the provision of a secure support for the electronic device or electronic module, is based on the three-way interaction of each of the first base mounting plate, the second device support plate and the third fastening elements. Each of these components is configured for interaction directly or indirectly with the two other components.

The components are formed for interaction and mating and further formed to provide controlled forces between the components. Fastening elements <NUM> are configured to interact directly with the connector and indirectly via the connector with the base mounting plate <NUM>. Different portions of the connector <NUM> interact directly with both the fastening elements <NUM> and the base support plate <NUM>. The fastening elements <NUM> interact with the support plate <NUM> in a direction orthogonal to the direction of interaction of the mounting plate <NUM> and the support plate <NUM>. As noted above both, of the two-way couplings are concentrically arranged.

Referring to <FIG>, <FIG>, <FIG> and <FIG>, further details of features of exemplary connector <NUM> including a receiver <NUM> formed internally in the connector body and a corresponding fastening element <NUM> receivable therein, according to the specification, are further described.

As described above and shown in the perspective view in <FIG> and <FIG>, the components shown in <FIG> including the fastening element <NUM>, connector <NUM> and bracket <NUM> are of a generally circular cross-section in the lateral or radial direction. Referring to <FIG> the fastening element <NUM> is shown in alignment with connector <NUM> which is engaged with the bracket <NUM>.

Each component when aligned or in the fastening position is arranged around a common central axis <NUM>, in the X direction. The interactions of the components include those between the circumferential peripheral surfaces of the fastening elements and of the connectors, receivers and brackets.

The fastening element <NUM> comprises an elongated body <NUM> that extends from a head portion <NUM> at a proximal end to a tip <NUM> at a distal end. The fastening element comprises a plurality of engagement members <NUM>, <NUM>-<NUM>, <NUM>-<NUM> which are arranged axially about a central longitudinal axis <NUM>. An external peripheral wall of each of the engagement members defines a mating surface for engagement with corresponding portions of the internal peripheral surface <NUM> of the receiver <NUM>.

The engagement members of the fastening element have radial dimensions conforming to the radial dimensions of the receiver. The fastening element <NUM> acts as an expander or expansion member when positioned in the receiver. The overall form of the fastening elements of the specification is different to, and contrasts to, the pin of <FIG> which shows a previous arrangement. The pin of <FIG> is a relatively narrow pin having a body of cylindrical form and of a constant radius in lateral cross-section from the head to end. In contrast, the fastening element <NUM> has a body having a number of engagement features arranged axially and formed to provide interaction with and expansion at the connector and receiver. The fastening element is not of constant diameter or radial extent, the different engagement features each have a particular form and radial extent. The fastening element of the specification comprises at least two engagement members having peripheral surface for engaging a corresponding counter surface of the receiver.

Referring to <FIG>, a first engagement member <NUM> is configured to interlock with a retainer <NUM> of the receiver <NUM>. The first engagement member <NUM> is defined by a portion of a main body <NUM> of the fastening element. The body <NUM> is of a generally ovoid form and extends between a neck portion <NUM> near the base end of the ovoid to a distal end <NUM> at the tip end. The first engagement member <NUM> in the arrangement of <FIG> is defined by a curved shoulder portion <NUM> that extends outwardly between the neck <NUM> and widest potion <NUM> of the ovoid body <NUM> near the minor axis thereof. An outer peripheral surface <NUM>' of the curved shoulder portion <NUM> is in use configured to contact and engage with a retainer <NUM> of the receiver <NUM>.

While the main body of the fastening element <NUM> is of generally ovoid form it will be appreciated that other suitable forms may be used, for example, a generally egg shaped, ellipsoidal or spherical form may be provided.

The plurality of engagement members furthers comprises annular contact members <NUM>-<NUM> and <NUM>-<NUM> separated by a recessed channel <NUM>. The external peripheral walls <NUM>-<NUM>', <NUM>-<NUM>' of the contact members <NUM>-<NUM> and <NUM>-<NUM> define mating surfaces configured for engaging with corresponding portions at the guide <NUM> of the inner peripheral wall <NUM> of the receiver <NUM>, when located in the fastened position. The contact members have a generally tapered cylindrical or frustum form. The external peripheral walls <NUM>-<NUM>', <NUM>-<NUM>' are tapered inwardly in the direction from the proximal end to the distal end of the fastening element, reflecting the form of the receiver. The annular contact members <NUM>-<NUM>, <NUM>-<NUM> are located between the head <NUM> and the main body <NUM> and are configured to mate with a guide portion <NUM> of the inner peripheral surface <NUM> of the receiver <NUM>. The proximal head portion <NUM> has a radial extent greater than that of the body <NUM> and contact members <NUM>. A radial step <NUM>' is provided between the head and first contact member <NUM>. In use, in the arrangements of the drawings the head portion <NUM> remains outside the receiver <NUM> when the fastening element is engaged.

The fastening element <NUM> and receiver <NUM> are configured to provide a controlled application of forces therebetween, based on their interaction at the plurality of engagement members. As a fastening element <NUM> is inserted into the receiver <NUM> the forces arising from the interaction include forces in radial and axial directions.

Referring to <FIG>, an exemplary receiver <NUM> and connector <NUM> according to an arrangement of the specification are described in further detail. The receiver <NUM> is defined by a channel that extends through the interior of the connector <NUM>. <FIG> and <FIG> provide external side views and <FIG> and <FIG> provide cross-sectional views in a lateral and longitudinal direction of the components (radial and axial directions of the connector, fastening element and bracket).

Connector <NUM> according to <FIG> comprises a connector body <NUM> having generally cylindrical form which is defined by a connector wall <NUM>. Other suitable forms may be used for example a tapered cylindrical form or frustum. The connector wall <NUM> extends from a proximal end <NUM> to a distal end <NUM>. The wall <NUM> comprises an external peripheral surface <NUM> and an internal peripheral surface <NUM>. In the arrangement of <FIG> and <FIG> the body <NUM> and external peripheral wall <NUM> tapers outwardly at the distal end <NUM> relative to the proximal end <NUM>. The external peripheral surface <NUM> comprises a connector mating member <NUM> defined by a circumferential channel <NUM> formed recessed relative to the external peripheral surface <NUM>.

The wall <NUM> in the arrangements illustrated in <FIG> (and <FIG>) is comprised of two or more wall portions <NUM>-<NUM>, <NUM>-<NUM>, to <NUM>-n. The wall portions are circumferentially spaced apart around the central axis of the connector <NUM>. The wall portions extend in the longitudinal direction (axial direction). The wall portions are spaced apart by one or more slots <NUM>. In the arrangement of the drawings a plurality of slots <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-n are provided circumferentially spaced apart. The channel <NUM> of the external peripheral surface <NUM> is made up of channel portions <NUM>-<NUM>, <NUM>-<NUM>, <NUM>-n, each wall portion comprising a portion of the circumferential channel. The wall portions <NUM> further comprise end wall members <NUM> located at the proximal end of the connector about the opening <NUM>. The external peripheral wall <NUM> is tapered inwardly in the direction of the opening <NUM> at the end wall members <NUM>.

The internal peripheral surface <NUM> of the wall <NUM> defines the mating surface of the receiver <NUM>. The wall <NUM> is configured to flex and to be displaced under forces applied between the fastening element <NUM> and the internal peripheral surface <NUM>. This includes forces applied by the fastening element at the guide portion <NUM> and at the retainer <NUM>. The flexing is supported by the form of the connector wall <NUM> including: by the provision of slots <NUM> and wall portions <NUM>-<NUM>, <NUM>-<NUM> to <NUM>-n. The flexing may also be supported by the selection of the material of the connector. The receiver <NUM> and the fastening element <NUM> are formed to have corresponding features and are of related dimensions to provide for the mating of the fastening element in the receiver.

The receiver <NUM> and the internal peripheral surface <NUM> of the wall comprise features to affect the interlocking. With reference to <FIG> and <FIG>, it is noted that the internal peripheral wall <NUM> of the receiver <NUM> comprises a number distinct axially arranged portions or regions. The receiver <NUM> extends between the proximal end, at which the opening <NUM> for receiving the fastener <NUM> is located, to the distal end <NUM> at which the base portion <NUM> connecting the connector <NUM> to the support plate <NUM> is located.

Referring to <FIG>, the receiver <NUM> comprises in the axial direction from the proximal end to the distal end: the opening <NUM>, guide portion <NUM>, retainer portion <NUM>, body portion <NUM>, and base portion <NUM>.

From the proximal end <NUM> of the connector, the opening <NUM> defines the widest portion of the receiver. From the opening <NUM>, the internal peripheral wall <NUM> tapers inwardly to form the tapered guide <NUM> which extends to the retainer <NUM>. The body portion <NUM> of the receiver extends in a distal direction from the retainer portion <NUM> to the base portion <NUM>. The guide portion <NUM> further comprises a first proximal area <NUM>-<NUM> configured to engage with a first contact member <NUM>-<NUM> of the fastening element and a second mid area <NUM>-<NUM> configured to engage with a first contact member <NUM>-<NUM> of the fastening element.

The retainer <NUM> as shown in the exemplary arrangement of <FIG> and <FIG> comprises a ridge <NUM> which defines the narrowest axial portion of the receiver <NUM> and a recess <NUM>. The ridge <NUM> and recess <NUM> together define the retainer <NUM>. The ridge <NUM> comprises a circumferential ridge which projects into the internal space of the receiver relative to the internal peripheral wall <NUM>. The recess <NUM> presents a widened portion of the retainer adjacent to the ridge. The ridge <NUM> is provided at a junction of the internal peripheral wall between a narrowed end portion of the tapered guide <NUM> and the recess <NUM>. The internal peripheral wall tapers outwardly at the recess. There are changes in the directions and the angles of incline of the tapered portions of the internal peripheral wall at retainer and the recess. The internal peripheral wall <NUM>' of the recess <NUM> tapers outwardly relative to the ridge <NUM> and the central axis. The wall <NUM>' has a curved form that conforms to the curved shoulder portion <NUM> of the fastening element <NUM>. The ridge <NUM> and the recess wall <NUM>' define a mating surface that in use when the fastening element is in the fastened position engages with the mating surface <NUM>' of the fastening element. The opposing mating surfaces are effectively clamped when engaged.

Taking account of the configuration of the receiver and fastening element it will be appreciated that as the fastening element is inserted into the receiver, the body <NUM> of the fastening element will interact with the receiver <NUM> to cause the wall <NUM> to flex to allow location of the body <NUM> in the retainer <NUM>. The location of the body <NUM> distally of the ridge <NUM> requires a displacement of the wall portions <NUM> to allow the widest portion <NUM> of the body <NUM> to be advanced distally of the retainer <NUM>.

When the receiver <NUM> is in the rest position (the fastening element is not located therein), the radius of the receiver <NUM> at the ridge <NUM> is less than the radius at the opening or the radius at the body portion <NUM> or the base <NUM> of the receiver.

While the retainer <NUM> of the exemplary arrangement of <FIG> is defined by ridge <NUM> and recess <NUM>, it will be appreciated that receivers comprise one of more retainers of suitable alternative form may be provided. The retainer is configured to conform to the form of an engagement member of the fastening element and to provide engagement thereof in the fastening position. A portion of the external peripheral surface of the fastening element defines a mating surface for engaging with a corresponding mating surface defined by a portion of the internal peripheral surface of the receiver. The opposing mating surfaces abut and are effectively interlocked or clamped and the fastening element is retained in the receiver.

When the fastening element <NUM> is located in the fastened position, several portions of the external peripheral wall of the fastening element <NUM> interface with corresponding portions of the receiver, by virtue of their configurations.

As described above and with reference to <FIG>, the main body portion <NUM> of the fastening element <NUM> is retained in the fastened position at the retainer <NUM> at the engagement member <NUM>. In addition, the external peripheral surfaces at the contact members <NUM>-<NUM> and <NUM>-<NUM> interface with and are in contact with the receiver at corresponding spaced apart locations <NUM>-<NUM> and <NUM>-<NUM> of the guide portion <NUM>. Therefore, the fastening element <NUM> is engaged circumferentially with the receiver <NUM> at multiple locations including at the retainer <NUM>, guide portion <NUM> and opening <NUM>.

The forces that arise due to the interactions of the contact members <NUM>-<NUM> and <NUM>-<NUM> and the receiver are also active in the coupling and securing of the fastening element and receiver, and the connector and bracket. Selected exemplary forces resulting from the interaction of the receiver and fastening element are described with reference to <FIG> and <FIG>. The receiver and fastening element are configured to provide controlled forces therebetween.

The forces include forces F3 and F4 in opposing axial directions which act to maintain the fastening element in the receiver. The forces further include forces directed generally radially or outwardly relative to the central axis, these forces which provide for a flexing of the receiver <NUM>, and the connector wall <NUM> which in turn provides for a tightening at the coupling of the bracket arms <NUM> in the channel <NUM> of the bracket connector member <NUM>. These forces include for example forces F1 and F2 directed generally radially, as shown In the <FIG>. The tightening is between all of the internal walls of the U-shaped channel and each of the corresponding <NUM> surfaces of the arms <NUM> of the bracket. The corresponding surfaces of the arms <NUM> of the brackets include the inner peripheral surface <NUM> and the external side walls adjacent to the receiver. While illustrated in cross-section in <FIG>, it will be understood that the forces are active circumferentially between the concentrically coupled members.

Forces F3 and F3' arise from the interaction of contact members <NUM>-<NUM>, <NUM>-<NUM> of the fastening element and the receiver at the corresponding regions of the guide portion <NUM>. Forces F4 arise from the interaction of the engagement member <NUM> of the fastening element and the receiver at the retainer <NUM>. The interactions are at axially spaced apart locations. The forces F3 (F3') and F4 are directed generally axially in opposing directions.

Referring to <FIG>, <FIG>, <FIG> and <FIG>, the forces arising from the interaction of the fastening element and receiver and the effects at the coupling of the bracket <NUM> and channel <NUM> are described further. Forces F1 (and F1') arise from the interaction of contact members <NUM>-<NUM> of the fastening element and the receiver at the guide portion <NUM>. Referring to <FIG>, the interaction between the mating surface <NUM>-<NUM> and the area <NUM>-<NUM> of the guide portion where these respective surfaces contact is shown. Forces F3 similarly arise from the interaction of the contact member <NUM>-<NUM> and the guide portion of the receiver. The interactions are between the external peripheral portion <NUM>-<NUM>' of the fastening element and the internal peripheral wall <NUM> at the mating region <NUM>-<NUM> of the guide portion.

Forces also arise from the interaction between the second contact member <NUM>-<NUM> and the receiver. In particular, as shown the external peripheral surface <NUM>-<NUM>' contacts the area <NUM>-<NUM> of the receiver, and the forces includes forces F3' and F1'.

Forces F2 arise from the interaction of the engagement member <NUM> of the fastening element and the receiver at the retainer <NUM>. Forces F4 similarly arise from the interaction of the engagement member <NUM> and retainer of the receiver. The interactions are between the external peripheral portion <NUM>' of the engagement and the internal peripheral wall <NUM> at the retainer <NUM>.

The interactions at the contact member <NUM> and the receiver are at axially spaced apart locations relative to the interactions at the engagement member <NUM> and the receiver. The forces, for example the exemplary forces F1 and F2 are directed generally outwardly, including in directions generally radially outwardly and orthogonal to or at an angle relative to the central axis. The interactions between the fastening element and receiver are circumferential and the forces F1 and F2 are active circumferentially. These exemplary forces F1 and F2 are examples of the forces relating to the flexing of the receiver and which provide expansion of the receiver.

The fastening element does of the exemplary arrangement of <FIG> is not configured to provide a continuous contact between the external peripheral walls thereof and the internal peripheral wall of the receiver. Instead, the contact members <NUM>-<NUM> or <NUM>-<NUM> and the engagement member <NUM> are separated by recesses and are configured to contact the receiver at corresponding locations including the proximal region <NUM>-<NUM> of the guide portion <NUM>, the mid region <NUM>-<NUM> of the guide portion, and the retainer <NUM>. The provision of spaced apart contact and engagement member - which are spaced apart by recesses provides for control of the direction of forces between the fastening element and the receiver and for control of the directions of flexing.

As shown in <FIG> and <FIG>, the bracket connector member <NUM> and channel <NUM> are located on the external peripheral surface <NUM> of the connector at a location between the retainer <NUM> and the area <NUM>-<NUM> at which the contact member <NUM>-<NUM> contacts the guide portion.

The forces between the connector wall <NUM> and the bracket <NUM>, arising from the insertion of the fastening element, therefore include outwardly directed forces which are applied to the connector wall <NUM> distally and proximally of the channel <NUM> including forces F1, F1' and F2. As a result, there is provided a flexing of the connector wall including forces for example in the directions F5 and F6, which provide for a tightening of the coupling between the bracket <NUM> and the channel <NUM> and for securing the bracket in the channel. The forces include torque in the direction F5 and forces generated by the torque in the direction F6, as shown.

Looking further at the overall interactions and for example the bending forces F5 and F6, it is noted that the external peripheral wall <NUM>-<NUM>' is also active in providing expansion by application of the forces at <NUM>-<NUM> which provides a bending in directions including F5 of the proximal end of the connector walls <NUM> where there is mating between the surface <NUM>-<NUM>' and the surface <NUM>-<NUM> of the receiver. Further forces F6 are generated by the torque.

These interactions are supported by the tapered form of the external peripheral wall <NUM>-<NUM>' of the contact member <NUM>-<NUM> and the tapered form of the guide portion <NUM> of the receiver <NUM> including at the contact area <NUM>-<NUM>. These interactions are further supported by the tapered form of the external peripheral wall <NUM>-<NUM>' of the contact member <NUM>-<NUM> and the tapered form of the guide portion <NUM> of the receiver <NUM> including at the contact area <NUM>-<NUM>'.

The channel <NUM> defines a recessed portion of the external peripheral surface <NUM> of the connector wall <NUM>. As described above the channel is a circumferential channel. The connector wall flexes in the direction of the channel under application of forces at the retainer <NUM> and the upper guide portion <NUM>-<NUM> distally and proximally of the channel. The forces include forces in the directions shown as F5 (torque) and F6 (forces generated by torque). The connector <NUM> and the channel has flexibility and resilience and tightens around the more rigid arm <NUM> of the bracket <NUM>.

Referring to <FIG>, the coupling between the bracket <NUM> and the channel <NUM> before insertion of the fastening element, is shown. As described, the coupling is by snap-fitting and as shown, there may be some gaps (gap <NUM> and gap <NUM>) between the walls of the channel <NUM> and the corresponding portion of the arms <NUM> of the receiver. Referring to <FIG>, regions <NUM>-<NUM>, <NUM>-<NUM>, and <NUM> of the receiver which interact with the contact members and engagement member of the fastening element. In addition, it is shown that the displacement or flexing of the receiver walls results in a tightening of the coupling of the bracket arms <NUM> in the channel. The gaps that were shown in <FIG> are now closed and the base and side walls of the U-shaped channel <NUM> are clamped in a tight fit against the inner peripheral surface <NUM> and side walls of the bracket. The overlap between the side walls of the channel <NUM> and of the arms <NUM> of the bracket is shown in <FIG> and <FIG> as OL1. The overlap OL1 depends on the depth of the channel <NUM>. The gaps that are indicated between the internal surfaces of the channel <NUM> and the corresponding portions of the arm of the bracket are closed as the coupling tightens. This tightening is also supported by the channel which is formed of a relatively flexible plastics material being moved into close engagement with the corresponding walls of the more rigid bracket.

The F5 is the torque generated from F1. The F6 is the force generated from torque F5. Forces F1'and F3' which are weaker than F1 and F3. The figures also show in dash line the areas of interaction between the pin (also referred to as the fastening element) and the flexible snap feature (also referred to as the connector).

The fastening element <NUM> exerts force on the connector at the internal peripheral wall. The wall <NUM> of the connector is displaced under the application of the forces and brought into contact with the bracket. The connector wall <NUM> is configured to be resilient to allow for snap-fitting to the bracket and to allow insertion of the fastening element. When both the fastening element <NUM> and the bracket <NUM> are engaged with the connector <NUM>, each of these more rigid components (fastening element and bracket) exerts a counterforce to the clamped portion of the connector <NUM> which is then constrained and maintained in a fixed state. When interlocked between the fastening element and bracket, the connector <NUM> does not flex as it does when in the rest position.

The receiver <NUM> is configured to receive the ovoid shaped elongated body portion <NUM> of the fastening element <NUM> after it is pushed into the fastened position within the receiver. The receiver <NUM> is shaped and dimensioned to conform to the shape and dimensions of the fastening element <NUM> thereby creating a bias F3, F3' against the fastening element in the direction in which it is pushed into place. In this way, the bias F4 provided by the interaction of the retainer <NUM> and shoulder portion <NUM> of the fastening element <NUM> is such that the retainer securely holds and maintains the fastening element <NUM> in place whilst the fastening element <NUM> at the same time creates a bias F2 against the elongated wall portions <NUM> to secure them within the bracket <NUM> at the channel <NUM>. Together the forces including forces F1, F1', F2, F3, F3' and F4 and the interactions of the three components (first base mounting plate, second support plate and the fastening element) provides for a secure connection of the support plate and the base mounting plate. The torque and forces arising from the torque have been discussed above, these forces and in particular active at securing and tightening the coupling between the bracket and connector.

As fastening element <NUM> is inserted into receiver <NUM>, forces are applied by the fastening element <NUM> to the connector wall <NUM> such that the connector wall <NUM> is displaced from a first rest position, when there is no interaction between the fastener and receiver, to a second fastened position when the fastening element <NUM> is located in the receiver <NUM>.

Referring to <FIG>, <FIG>, further exemplary fastening elements are described. The fastening elements have features in common with fastening element <NUM> and the same reference numbers are used where appropriate.

As described above, the fastening elements of the various arrangements are an integral component of the mounting systems <NUM> of the specification. The form of the fastening elements including shape and dimensions conforms to that of a corresponding receiver <NUM>. The fastening element is configured as an expansion element. The fastening elements and corresponding receivers each comprise corresponding mating features. The fastening elements and corresponding receivers are configured to provide controlled forces therebetween and for coupling the base mounting plate and the device support plate. It will be appreciated that fastening elements and corresponding receivers of alternative suitable form to that described above with reference to <FIG> may be provided.

<FIG> provides a close-up perspective view of the fastening element <NUM>.

Referring to <FIG> a fastening element <NUM> is described. The fastening element <NUM> comprises an elongated body <NUM> that extends from a head portion <NUM> at a proximal end to a tip <NUM> at a distal end. The fastening element comprises an engagement member <NUM> and contact members <NUM> which are arranged axially about a central longitudinal axis <NUM>. An external peripheral wall of the engagement and contact members defines a mating surface for engagement with corresponding portions of the internal peripheral surface <NUM> of the receiver <NUM>.

The first engagement member <NUM> is configured to interlock with a retainer of a corresponding receiver to engage the fastening element with the receiver. The first engagement member <NUM> comprises a body <NUM> of a generally ovoid form and extends between a neck portion <NUM> near the base end of the ovoid to a distal end <NUM> at the tip end. A curved shoulder portion <NUM>' of the external peripheral surface of the body <NUM> extends outwardly relative to the axis between the neck <NUM> and widest portion <NUM> of the ovoid body <NUM>. The external peripheral surface at the curved shoulder portion <NUM>' defines a mating surface which in use is configured to contact and engage with a retainer <NUM> of the receiver <NUM>.

The fastening element <NUM> further comprises an annular contact member <NUM> separated from the main body <NUM> by a recessed channel at the neck <NUM>. The external peripheral walls <NUM>' define a mating surface configured for engaging with corresponding portions of the inner peripheral wall <NUM> of the receiver <NUM>, when located in the fastened position. The external peripheral wall <NUM>' is also active in providing expansion. This provides a bending of the proximal end of the connector walls <NUM> where there is mating between the surface <NUM>' and the surface <NUM>' of the receiver. The external peripheral wall <NUM>' tapers inwardly (radially) in the direction from the proximal end to the distal end of the fastening element, reflecting the form of the receiver. A radial step <NUM>' is provided between the head <NUM> and first contact member <NUM>. In use, in the arrangements of the drawings the head portion <NUM> remains outside the receiver <NUM> when the fastening element is engaged. The dimensions and features of the fastening element are selected taking account of the form, dimensions and features of the corresponding receiver <NUM> of connector <NUM>.

The fastening element <NUM> and receiver <NUM> are configured to provide a controlled application of forces therebetween on their interaction. As a fastening element <NUM> is inserted into the receiver <NUM> the forces arising from the interaction include forces in directions generally radially outward and orthogonal to the central axes of the receiver and fastening element, and bracket of the base mounting plate and forces in the axial directions.

The fastening element <NUM> of <FIG> and <FIG> is similar to that of <FIG>. However, an additional contact member <NUM> is provided between the first contact member <NUM> and the head <NUM>. A step <NUM>' is provided between the peripheral edge surface of the head portion <NUM> and the contact member <NUM>. The contact member <NUM> comprises a plurality of locking members <NUM>. The contact member <NUM> is of annular form of depth d5, the locking members <NUM> extend radially outwardly from contact member <NUM> between the peripheral wall thereof and that of the head portion <NUM>. The locking members <NUM> are spaced apart. The locking member <NUM> are arranged similarly to spokes relative to the contact member <NUM> and of depth d5. The locking members <NUM> are configured for interlocking with end members <NUM> (<FIG>, <FIG> and <FIG>) of a corresponding connector. When the fastening element <NUM> and connector are engaged the locking members <NUM> are located between the end members <NUM> in the slots <NUM> of the connector wall <NUM>.

Referring to <FIG>, a further fastening element <NUM> according to an exemplary arrangement of the specification is described. The overall form and configuration of the fastening element is similar to those of <FIG>. The fastening element <NUM> further comprises a main body portion <NUM> of a generally spherical form. The main body portion <NUM> comprises a recess <NUM> defining an engagement member. The recess <NUM> comprises a V-shaped trough formed recessed into the body portion <NUM> near the circumference thereof. The V-shaped trough extends circumferentially around the main body portion <NUM>. The recess <NUM> comprises an inner base <NUM>, and walls <NUM>' that taper outwardly from the base <NUM> to outer ends <NUM> defining the V-shaped form.

The fastening element <NUM> further comprises an annular contact member <NUM> separated from the main body <NUM> by a recessed channel at the neck <NUM>. The external peripheral walls <NUM>' define a mating surface configured for engaging with corresponding portions of the inner peripheral wall <NUM> of the receiver <NUM>, when located in the fastened position. The external peripheral wall <NUM>' tapers inwardly (radially) in the direction from the proximal end to the distal end <NUM> of the fastening element <NUM>, reflecting the form of the receiver. A radial step <NUM>' is provided between the head <NUM> and first contact member <NUM>. In use, in the arrangements of the drawings the head portion <NUM> remains outside the receiver <NUM> when the fastening element is engaged. The dimensions and features of the fastening element are selected taking account of the form, dimensions and features of the corresponding receiver <NUM> of connector <NUM>.

The forces arising from the interaction of the fastening element <NUM> and the receiver <NUM> are illustrated. As described above with reference to <FIG>, the forces include forces in the axial direction F3, F4, forces in generally outward or radial directions F1, F2', torque F5 and forces generated by torque F6.

With reference to <FIG>, the fastening element <NUM> of <FIG> is shown located in a corresponding receiver <NUM> of a connector. The receiver is configured to comprise a retainer <NUM> that conforms to the form of the recess <NUM>.

Referring to <FIG> an alternative mounting system <NUM> is described. The mounting system <NUM> is similar to the mounting system of <FIG> and the same reference numbers have been used where appropriate. The mounting system <NUM> comprises a base mounting plate <NUM> and a device support plate <NUM>. The base mounting plate <NUM> comprises brackets <NUM> for coupling with connectors <NUM> of the device support plate <NUM>. The connectors <NUM> of the device support plate <NUM> have some flexibility and resilience. The base mounting plate <NUM> and the bracket <NUM> is relatively more rigid than the connector <NUM> of the device support plate <NUM>. The device support plate and connectors may be comprised of a plastics material. The base mounting plate may be of a metal material. However, it will be appreciated that any suitable materials having the required properties of rigidity or flexibility may be used.

When coupled, as illustrated in <FIG>, the plates <NUM>, <NUM> are arranged longitudinally offset and spaced apart in the lateral direction. The plates <NUM>, <NUM> contact each other at the connectors <NUM> and brackets <NUM>. The coupling is located between the plates. The central longitudinal axes <NUM>, <NUM> through the brackets <NUM> and connectors <NUM> are aligned when the plates are coupled. Fastening element <NUM> (as described with reference to <FIG> are provided for securing the plates together in the coupled position. When engagement the fastening elements, connectors and brackets are all concentrically arranged about the central longitudinal axis of the couplings. The connection between the fastening element and receiver of the connector is in the axial or longitudinal direction. The connection between the connector and brackets in a direction orthogonal to the axial direction.

In the arrangement of <FIG>, in contrast to the mounting system of <FIG>, the fastening elements <NUM> are inserted into the receivers of the connectors <NUM> in opposing directions. The first and second connectors <NUM> are oriented axially aligned but in opposing directions. This arrangement can be advantageous in applications where access or clearly space at the connectors is limited, as the fastening elements may be inserted into the respective receivers from a position external to the plates and couplings.

The description of the mounting system <NUM> described with reference to <FIG> applies to the mounting system <NUM> of <FIG>.

Referring to <FIG>, some exemplary forces provided by the interaction of the fastening element <NUM> with connector <NUM> are illustrated. The arrangement and the forces arising are similar to those described with reference to <FIG>. The exemplary forces include forces that are directed generally outwardly and act to provide a flexing of the connector wall <NUM>. These forces include forces directly outwardly or radially F1 and F2' which as shown act proximally of and adjacent to the bracket connector member <NUM> and channel <NUM>. These radially directed and outwardly directed forces are directed at the connector wall <NUM> circumferentially and provide a displacement or flexing of the connector wall outwardly relative to the central longitudinal axis which provides for a tightening of the coupling of the bracket in the channel <NUM>. The tightening, as described previously with reference to <FIG>, applies also to the arrangement of <FIG>.

The tightening of the coupling is between all three surfaces of the channel <NUM>, and the corresponding three mating surfaces of the bracket, namely the internal peripheral surface <NUM>, and the side walls of the arms adjacent to the internal peripheral surface. As described the channel <NUM> has a U-shaped form. The enlarged view of the bracket, as provided in <FIG>, shows that the forces include the force F5 which acts to provide bending of the connector wall in the direction of the channel <NUM>. The connector has flexibility and resilience and flexes at the channel to tightly engage with the bracket located in the channel. All three wall of the channel are pressed against the corresponding portion of the bracket. Force F5 is torque. Additional forces F6 are provided to effectively clamp the channel and the bracket. Forces F6 are generated by torque.

The forces which drive the tightening of the coupling at the channel and the bracket include those arising from the interaction of the fastening element with the receiver at the mating surface <NUM>' of the first contact member <NUM> and corresponding portion <NUM>-<NUM> of the guide portion <NUM>. The forces between the engagement member <NUM> and the retainer <NUM> are also active. The interaction includes between the external peripheral surface <NUM>' of the engagement member and the internal peripheral surface <NUM>' at the retainer.

The exemplary forces also include forces (F3 and F4) in axially opposing directions which work together to maintain the fastening element in the receiver. The tapered external peripheral walls <NUM>' which define contact surfaces of contact members <NUM> when pushed into place and coupled to the receiver <NUM> creates a bias F3 in the opposite direction to which it is pushed into the channel when in place. This bias F3 created by the contact member <NUM> against the receiver opposes the bias F4 arising from the interaction between the fastening element at the shoulder portion <NUM> and the retainer <NUM>. These biasing forces F3 and F4 work together and simultaneously such that the fastening element <NUM> is thereby held securely in place in the receiver <NUM>. The wall <NUM> of the connector <NUM> is effectively clamped between the relatively rigid fastening element <NUM> and the bracket <NUM>.

As described with reference to the arrangements of <FIG>, the plates <NUM> and <NUM> are coupled about a common axis <NUM>, <NUM> (X direction in the drawings). The couplings are circumferential, and the arrangement provides that the plates may be rotated relative to one another about the couplings. Therefore, when the mounting system is mounted and fixed in a vehicle, it remains possible to adjust the tilt of one plate relative to the other about the axis. This allows for adjustment of the electronic device or module supported thereon.

Referring to <FIG>, a mounting system <NUM> according to a further exemplary arrangement of the specification is described. Mounting system <NUM> comprises a base mount plate <NUM> having brackets <NUM>. The device support plate <NUM> comprises connectors <NUM> for coupling to corresponding brackets <NUM>. Three connector <NUM> and corresponding bracket <NUM> pairs are provided. Two of the connector <NUM>-<NUM>, <NUM>-<NUM> and bracket <NUM>-<NUM>, <NUM>-<NUM> pairs, are arranged such that the axis <NUM> through the connectors is aligned with the axis <NUM> through the brackets when coupled (direction X1 in the drawings). The third connector and bracket pair <NUM>-<NUM>, <NUM>-<NUM>, is arranged such that this third coupling is non-aligned with the first two connector and bracket pairs. If the plates <NUM> and <NUM> are connected at the aligned bracket and connector pairs it is possible as described with reference to <FIG> to change the tilt of one plate relative to the other by rotating or tilting one or other about the axis of the couplings. If the plates are connected at non-aligned bracket and connectors, then the plates are coupled in a static arrangement, tilting is not possible.

The arrangements of the specification provide improved mounting systems according to the various exemplary arrangement shown, for mounting an electronic device or electronic module to a vehicle. The arrangements of the specification advantageously address issues associated with previous systems. The flexible connector is configured for snap fitting to the more rigid mounting plate at the bracket. Due to tolerances there will be some clearance or gap between rigid and flexible part. To eliminate this gap and make the snap fitting joint robust and stiff against load, stress, and noise or rattling due to tolerances, the fastening element is provided. The fastening element is configured to be assembled to the first and second plates in a direction perpendicular or orthogonal to the snap fitting direction.

Claim 1:
A mounting system (<NUM>) configured to mount an electronic device or electronic module to a vehicle, the mounting system (<NUM>) comprising:
a base mounting plate (<NUM>);
a device support plate (<NUM>) for supporting the electronic device; and
at least one fastening element (<NUM>) for securing the device support plate (<NUM>) to the base mounting plate (<NUM>);
the base mounting plate (<NUM>) comprising at least one bracket for coupling to the device support plate (<NUM>);
the device support plate (<NUM>) comprising at least one connector (<NUM>), each connector defined by a wall (<NUM>) arranged about a central longitudinal axis (X), the wall (<NUM>) of the connector comprises a plurality of resilient wall portions (<NUM>-<NUM>, <NUM>-<NUM>, <NUM>-n), an internal peripheral surface (<NUM>) of the wall (<NUM>) comprising a channel extending axially therethrough defining a receiver (<NUM>) for receiving a fastening element (<NUM>);
each fastening element (<NUM>) comprising at least two engagement members (<NUM>, <NUM>), each comprising an external peripheral surface (<NUM>', <NUM>') defining a mating surface for contacting a corresponding mating surface of the receiver;
wherein each engagement member is configured to apply a respective controlling force to a corresponding mating surface of the receiver, which controlling force causes the plurality of the resilient wall portions of the receiver to be displaced, such that the wall of the connector engages with a corresponding bracket of the base mounting plate, so as to fasten the base mounting plate to the device support plate.