GUIDE FOR ATTACHING A WINDOW OF AN AUTOMOTIVE VEHICLE TO A GUIDE CHANNEL

Abstract: A guide (80) for guiding the movement of an automotive window along a channel-shaped track (52) is disclosed. The guide (80) is made from two moulded, identical synthetic plastics half-members (80a,80b) which are snap-fittingly connected together and which have track-engaging head portions (86) which are held apart by bowed leaf portions (94) and biasingly held via integral hinges (90,92) in sliding engagement with the track (52) when connected therewith to substantially eliminate or minimize rattling noise therebetween.

Description: The present invention relates to a guide for attaching a movable element, such as a window of an automotive vehicle, to a channel-shaped stationary guide track and, more particularly, to a two-headed guide comprised of two moulded plastic half members which are shaped and arranged such that they can be snap-fittingly connected together and such that their heads are automatically deflected and retained in a position away from each other in channel receiving positions when connected together. Heretofore, various guide arrangements have been used for guiding a window of an automotive vehicle between open and closed positions. One kind of guide arrangement employs a guide which is secured to the window and has a head or roller means at its end remote from the window which is rollably or slidably received within a stationary channel-shaped guide track carried by a door or other body structure of the vehicle. Examples of such guide arrangements are shown in U.S. Patent Nos. US-A-4,483,100; US-A-4,503,639 and US-A-4,593,494. These known arrangements, however, require that the guide and associated track be manufactured with relatively close tolerances and they have a tendency to cause rattling between the guide and the track. It is also known to employ a guide roller which is received within a channel-shaped guide track which is made from two nylon disk parts which are biased apart by a spring washer to maintain the roller in engagement with the track to take up tolerance variations and to minimize rattling therebetween. Such a guide arrangement is shown in U.S. Patent US-A-No.2,912,288. The present invention provides a novel guide which is made from two moulded, identical, plastic half-members which are snap-fittingly connected together and which have track-receiving head portions which are held apart and biasingly held in sliding engagement with the channel-shaped track when connected therewith. This guide is not sensitive to manufacturing tolerance variations in the window, guide or track and it substantially eliminates or minimizes any rattling noise between the guide and the track. Accordingly, it is a broad object of the present invention to provide a new and improved guide for guiding an element, such as a window of an automotive vehicle in opposite directions between closed and open positions, along a stationary guide track, and in which the guide at one end thereof is adapted to be secured to the element so as to extend transversely of its direction of movement and at the other end thereof is received within the channel-shaped track (guide of the type disclosed, e.g. in US-A-4,483,100, US-A-4,503,639 or US-A-4,593,494) characterised by the features of the invention as defined in the characterising portion of claim 1. It is a feature of the invention that the guide comprises two moulded, identical, plastic half-members which are snap-fittingly connected together and which have track-receiving head portions which are held apart and biasingly held in sliding engagement with the channel-shaped track when connected therewith and in which the guide is of a relatively simple and economical construction, is not sensitive to manufacturing tolerance variations in window guide or track and which substantially eliminates or minimizes any rattling noise between the guide and the track when connected thereto. It is another feature of the present invention that each half-member of the guide includes a) a base portion which is adapted to be connected with the window, b) a shank portion integral with the base portion and which extends perpendicularly thereto, c) a head portion which is adapted to be received in the channel-shaped track and which is aligned with the shank portion in the as-moulded condition, d) a neck portion integrally-hinged via hinge means to the shank portion and the head portion, e) a bowed leaf portion integral at its opposite ends with the shank portion and the head portion and bridging said neck portion (as viewed in elevation), and f) co-operable means on the shank portion of the half-members for snap-fittingly connecting the shank portions of the half-members together after the base, shank and head portions are aligned back to back with one another, and wherein the bowed leaf portions engage each other as the half-members are connected together and cause the hinge means and the neck portions thereof to deflect and move the head portions away from each other from their aligned as-moulded position to position the same so that their free ends face in directions generally away from each other and so that the head portions have their central axes extending transversely of the longitudinal axis of the guide. Preferably, in the preferred embodiment of the present invention, each half-member of the guide comprises a generally planar base portion which is adapted to abut and be connected with the window, a shank portion integral with the base portion and which extends perpendicularly thereto and has a planar back, a circular head portion which is adapted to be received in the channel-shaped track, a neck portion integrally-hinged at one end via a first hinge means to the shank portion and integrally-hinged at its other end via a second hinge means to the head portion, a bowed leaf portion integral at its opposite ends with the shank portion and the head portion and bridging the neck portion, as viewed in elevation, and co-operable means on the shank portions of the half-members for snap-fittingly connecting the shank portions and the half-members together after their base, shank and head portions are aligned back to back, and wherein the bowed leaf portions engage each other as the half-members are connected together and cause the first and second hinge means to pivot in opposition to their self-biasing forces and move the neck and head portions away from each other to position the head portions so that their free ends face away from each other and with the first and second hinge means being further pivotable in opposition to their self-biasing forces when the head portions are received in the guide track and with the self-biasing forces functioning to maintain the head portions in engagement with the track when connected thereto to prevent rattling therebetween. Advantageously, in the preferred embodiment of the invention, the base and shank portions include integral reinforcing ribs so as to provide rigid base and shank portions and wherein the head and neck portions have substantially rigid reinforcing ribs which are engageable with each other to limit the extent to which the hinge means can be pivoted and whereby the hinge means in effect pretension the head portions so that they are at all times biasingly engaged with the channel-shaped track when connected thereto. The present invention further resides in various novel constructions and arrangement of parts, and further objects, novel characteristics and advantages of the present invention will be apparent to those skilled in the art to which it relates and from the following detailed description of the illustrated, preferred embodiments thereof made with reference to the accompanying drawings forming a part of this specification and in which similar reference numerals are employed to designate corresponding parts throughout the various views, and in which: Figure 1 is a fragmentary perspective view of an automotive vehicle showing its door assembly with its window thereof in its closed position and embodying a novel guide according to the present invention; Figure 2 is a cross-sectional view of the vehicle door assembly taken along the lines 2-2 of Figure 1, but showing the window in its open position; Figure 3 is an enlarged, fragmentary, sectional view of a preferred embodiment of the novel guide of the present invention, taken along the lines 3-3 of Figure 2; Figure 4 is a side elevational view with parts broken away of the guide shown in Figure 3 and looking in the direction of the arrows 4-4 of Figure 3; Figure 5 is an enlarged fragmentary top elevational view of part of the guide shown in Figure 3, and showing the position of the same in its as-moulded condition; Figure 6 is a fragmentary side elevational view of that part of the guide shown in Figure 5 and looking in the direction of the arrows 6-6 of Figure 5; Figure 7 is a view like that shown in Figure 3, but showing the novel guide prior to its attachment to the guide track; and Figure 8 is a fragmentary top plan view with parts shown in section, of an alternative embodiment of the novel guide of the present invention. Referring to Figure 1 of the drawings, an automotive vehicle 10 is thereshown. The vehicle 10 includes body structure 12 which defines a door opening 14. The vehicle 10 also includes a door assembly 16 which is adapted to be hinged at its front end to the vehicle body structure 12 via suitable hinges (not shown) for movement between an open position, as shown in Figure 1, and a closed position in which it closes off the body side opening 14. The door assembly 16 can be of any suitable or conventional construction and includes an inner door panel 20, an outer door panel 22, a rear end wall 24, a front or forward end wall 26, and a bottom wall 28 which together define a well 30 having an elongated opening 32 along its top or belt line 34 of the vehicle 10. The door assembly 16 further includes an unframed window 40 which is supported for movement therein between a closed position, as shown in Figure 1, in which most of the window 40 is disposed above the belt line 34 of the vehicle and an open position, as shown in Figure 2, in which the window 40 is received within the well 30 of the door assembly 16. The window 40 is unframed in that its side and top edges are not slidably received within an inverted U-shaped frame and the window when in its closed position, as shown in Figure 1, respectively engages a suitable seal 43 carried by the body structure 12 around the upper portion of the opening 14 and suitable seals 44 and 45 carried by the inner and outer door panels 20 and 22 of the vehicle body structure 12 to provide a seal between the window 40 and the body structure 12. The window 40 is supported for movement between its open and closed positions by a suitable guide arrangement which comprises fore and aft guide tracks 52 and 54 which are stationarily secured via brackets to the inner panel 20 of the door assembly 16. The guide tracks 52 and 54 are curved so as to have the same radius of curvature as the window 40. The guide tracks 52 and 54 are of identical construction and therefore only the guide track 52 will be described in detail. As best shown in Figure 3, the guide track 52 is generally C-shaped and includes a bottom wall 60 adjacent the inner door panel 20, a pair of end walls 62 and 64 and a pair of forward walls 66 and 68 integral with the end walls 62 and 64, respectively. The forward wall 66 and 68 terminate at locations spaced from each other so as to define an elongated opening 70 extending the entire length of the guide track 52 and which faces towards the plane of the window 40. In accordance with the provisions of the present invention, novel guides 80 are provided for attaching the window 40 to the guide channels 52 and 54. The guides 80 are suitably secured to the window 40 adjacent its lower end at its fore and aft sides and are slidably received within the respective guide channels 52 and 54. The novel guides 80 of the present invention each comprise two moulded, identically shaped, synthetic plastics, half-members 80a and 80b which are snap-fittingly connected together to provide a guide 80 symmetrical about its longitudinal axis 81. Since the guide half-members 80a and 80b are of an identical construction, the same reference numerals will be employed to designate corresponding parts thereof, but only the guide half member 80a will be described in detail. The guide member 80a comprises, in general, a base portion 82 which is adapted to abut and be connected with the window 40, a shank portion 84 integral with the base portion 82 and which extends perpendicularly thereof, a circular head portion 86 which is adapted to be received within the channel-shaped track 52, a neck portion 88 which is integrally hinged at one end via a first hinge means 90 to the shank portion 84 and integrally hinged at its other end via a second hinge means 92 to the head portion 86, a bowed leaf portion 94 integral at its opposite ends with the shank portion 84 and the head portion 86 and which bridges over the neck portion 88, as viewed in elevation, and co-operable means 96 on the shank portion 84 of the half-members 80a and 80b for snap-fittingly connecting the shank portions 84 and half-members 80a and 80b together after their base, shank and head portions 82, 84 and 86 are aligned back to back to one another. The first and second hinge means 90 and 92 are self-biased towards a normal, as-moulded, free-state position so that the neck and head portions 88 and 86 are longitudinally aligned with the shank portion 84, as best shown in Figure 5. When the co-operable means 96 of the half-members 80a and 80b are connected together, the bowed leaf portions 94 thereof engage each other and cause the first and second hinge means 90 and 92 to pivot in opposition to their self-biasing forces and move the neck and head portions 88 and 86 away from each other to the position shown in Figure 7 in which the head portions 86 have their free ends 98 facing away from each other and the head portions 86 have their central axes 100 extending transversely of the longitudinal axis 81 of the guide 80, the axes 100 forming an acute included angle with the longitudinal axis 81. It should be noted at this point that the first and second hinge means 90 and 92 are further pivotable in opposition to their self-biasing forces from their position shown in Figure 7 after the half-members 80a and 80b are connected together so that the head portions 86 can be disposed opposite each other and be received within the guide track 52 and with their self-biasing forces functioning to maintain the head portions 86 in engagement with the track 52 when connected thereto, as shown in Figure 3. The base portion 82 of the half-member 80a is a generally planar member semi-circular in shape. As best shown in Figures 3 and 4, the base member 82 includes a semi-circular shaped rim 101 extending rearwardly thereof which is adapted to engage the window 40. The base portion 82 also includes a rearwardly-extending pin 102 which is semi-circular in shape, as viewed in cross-section, and which is adapted to extend through an opening 104 in the window 40 when connected thereto. When the half-members 80a and 80b are connected together, they define a circularly shaped base and rim which abuttingly engages the window on its side facing the track 52, and the pins 102 thereof are aligned back to back thereof, and together define a cylindrical pin which extends through the opening 40 in the window. The guide 80 is held secured to the window by a suitable fastener means, such as a push-on spring clip 110 which is force-fitted over the pins 102 and engages the window 40 on the side opposite the base portions 82 so as to retain the guide member 80 securely to the window 40. The shank portion 84 is integral with base portion 82 and extends perpendicularly thereto. The shank portion 84 comprises a planar back 112 having a width equal to the diameter of the semi-circularly shaped base 82 at its rearward, left end, as viewed in Figures 3 and 4, and is of a lesser width at its forward end, as best shown in Figure 4. The back 112 is integral with the base 102 along its chordal diameter. The shank portion 84 also includes a reinforcing rib 116 which extends perpendicularly with respect to the back 112. The reinforcing rib 116 is generally triangularly shaped and has its left end, as viewed in Figures 3 and 4, integral with the base portion 82 and its lower side, as best viewed in Figure 3, integral with the back 112. The construction of the shank portion 84 is such that it is a rigid support member. The shank portions 84 of the half-members 80a and 80b at their forward, right ends 117, as viewed in Figure 3, extend away from the plane of their respective backs 112 and diverge away from each other to define a space 120 therebetween, and for a reason to be hereinafter more fully apparent. The neck portion 88 of the half-member 80a comprises a pair of spaced neck sections 88a and 88b which are of a rigid construction. The spaced sections 88a and 88b define an open slot 124 therebetween. Each of the neck sections 88a and 88b are integrally connected with the forward end 117 of the back 112 of the shank portion 84 via first integral hinge means 90. The hinge means 90 are flexible or pivotable. As best shown in Figure 5, the forward ends 117 of the back 112 have an end face 117a and the rearward end of the neck sections 88a and 88b have end faces 125 which are bevelled and define therebetween an acute included angle A which is approximately 35°. The neck sections 88a and 88b are also integrally hinged to the rearward ends of the head portions 86 via second hinge means 92. The hinge means 92 are also flexible or pivotable and the neck sections 88a and 88b of the neck portion 88 have forward end faces 126 and the head portion has rearward ends 127 which are bevelled and define therebetween an acute included angle B of approximately 60-65°, preferably 62°. The head portions 86 comprise a pair of spaced planar rearward sections 128 whose rearward ends 127 are integral with the second hinge means 92 and a forward end section 130 in the shape of a wheel rim 130. That is, the forward end section 130 has a pair of spaced circular flanges 132 and 134 which are integrally connected via an intermediate hub portion 135 of a lesser diameter. The rearward section 128 is integral with the flange 132. The head portion 86 also includes a pair of spaced reinforcing ribs 136 integral with the rearward sections 128 adjacent the slot 124 and integral with the flange 132. The configuration and construction of the head portion 86 is such that it is a rigid synthetic plastics member. The reinforcing ribs 136 extend normal to the plane of the rearward sections and are aligned with reinforcing ribs 137 on the neck portion 88, as best shown in Figure 6. The reinforcing ribs 137 on the neck portion 88 also extend perpendicular thereto and have bevelled forward ends which are adapted to be engaged by bevelled rearward ends on the reinforcing ribs 136 on the head sections 128, and for reasons to be hereinafter more fully described. The bowed leaf portion 94 is located between the neck sections 88a and 88b of the neck portion 88 and the rearward sections 128 of the head portion 86. The bowed leaf portion 94 has one end integral with the forward end 117 of the shank portion 84 and its other end integral with the head portion 86 at the juncture of the rearward sections 128 and the flange 132 thereof. The length of the bowed leaf portion 94 is greater than the distance between the first hinge means 90 and the flange 132 of the head portion 86. The bowed leaf portion 94 thus bridges over the neck portion 88, as viewed in side elevation in Figure 5, and at its forwardmost end extends between the reinforcing ribs 136 on the head portions 86. The bowed leaf portion 94 is substantially rigid, although it may deflect or flex somewhat. The co-operable means 96 for snap-fittingly connecting the two half-members 80a and 80b together comprises a pair of rectangular apertures 140 extending through the back 112 of the shank portion 84 of each half-member 80a, 80b at diagonally opposite locations on opposite sides of the reinforcing rib 116 and a pair of integrally-formed headed protrusions 142 extending perpendicularly to the plane of the back 112 at opposite locations on opposite sides of the reinforcing rib 116. Thus, as best shown in Figure 4, there is one opening 140 and one protrusion 142 adjacent the rearward, left end and similarly at the forward right end of the shank portion 84 of each half-member 80a, 80b. It should be noted at this point that, when the guide half-members 80a and 80b are in the as-moulded condition, that the hinge means 90 and 92 thereof are self-biased toward a normal free-state position in which the shank portions 84, neck portions 88 and head portions 86 are longitudinally aligned, as shown in Figure 5. When the two half-members 80a and 80b are connected together, they are aligned with each other back to back so that the base portions 82, shank portions 84 and head portions 86 are longitudinally aligned. They are connected together by press fitting back portions 112 towards each other after the protrusions 142 on the half-member 80a are aligned with the respective apertures 140 of the half-member 80b and the protrusions 142 on the half-member 80b are aligned with the respective apertures 140 on the half-member 80a. When the shank portions 84 are pressed together, the headed protrusions 142 of one half-member will be received within the respective apertures 140 of the other half-member and be deflected from their normal free-state position by the side wall of the back portion 112 defining the apertures 140 until the heads of the protrusions 142 clear the apertures 140. When this occurs, the protrusions 142 will return toward their normal free-state position and hook behind the outer surface of the back member 112 of the other half-member 80a or 80b. The two half-members 80a and 80b are thus snap-fittingly connected together and are securely retained together by the co-operable means 96. When the two half-members 80a and 80b are connected together, the bowed leaf portions 94 on the respective members 80a, 80b will engage one another. Since the bowed leaf portions 94 are substantially rigid, although some flexure or deflection may take place, they cause the first and second hinge means 90 and 92, which are much more flexible, to pivot and move the neck portions 88 and the head portions 86 away from one another to the position shown in Figure 7. When in this position, the respective end faces 98 of the head portions 86 face away from each other and have their central axes 100 extending transversely of the longitudinal axis 81 of the guide 80. When the head portions 86 are deflected to the position shown in Figure 7, as the result of the half members 80a and 80b being connected together, further pivotal movement of the head members 86 is permitted. This is because in this position the bevelled sides 117 and 125 and 126 and 127 adjacent the hinge means 90 and 92, respectively, are still slightly spaced from one another. The reason for this is so that, when the head portions 86 are inserted within the respective guide channels 52, 54, it is necessary to further pivotally move the head portions 86 away from each other to enable them to be inserted therein. This further pivotal movement is permitted in opposition to the self-biasing forces of the first and second hinge means 90 and 92 and ensures that, when the head portions 86 are inserted in the respective guide channel 52, 54, the hinge means 90 and 92, due to their self-biasing forces, will biasingly hold the head portions 86 in engagement with the respective guide channel 52, 54. It should also be noted that the hinge means 90 and 92 enable the head portions 86 to be pivoted about their central axis 100 slightly greater than 90°. If pivoted much beyond that extent, the bevelled sides 117, 125 and 126, 127 on the shank, neck and head portions 84, 88 and 86, respectively, along with the bevelled sides of the reinforcing ribs 136 and 138 on the neck portion 88 and the head portion 86, respectively, will engage one another to limit the extent to which the head portions 86 can be pivoted relative to the shank portions 84 so as to prevent over-pivoting and/or breakage of the hinge means 90 and 92. The hinge means 90 and 92, when pivoted from their normal free-state position, as shown in Figure 5, thus function, in effect, as a pre-tension means for the head portions 86 when they are received within the guide channel 52, 54 to biasingly retain the same against the bottom wall 60 of the guide channel 52 so as to prevent rattling between the guide member 80 and the respective guide channel 52, 54. In addition, the provision of the bowed leaf portion 94 serves to provide equal or substantially equal stress on the hinge means 90, 92 of the half-members 80a and 80b and serve to prevent axial flexing between the head portions 86 when the half-members 80a and 80b are connected together. Also, it should be noted that the provision of the spaced flanges 130 and 132 minimizes the amount of frictional contact between the head portions 86 and the bottom 60 wall of the respective guide channel 52, 54. Figure 8 shows an alternative embodiment of the present invention. If a roller is desired in place of the flanged wheel rim head portion 86, the wheel rim could be replaced by an axially-extending shank to which a suitable roller 150 could be mounted if rolling contact between the guide channel 52 rather than sliding contact with the guide channel were desired. From the foregoing, it should be apparent that a novel guide has been provided which is of a relatively simple and economical construction, is not sensitive to manufacturing tolerance variations in the guide track, the guide or the window and which prevents rattling between the guide and the guide track. In addition, the concept of providing a pair of identically shaped half-members which are snap-fittingly retained together and which include bowed leaf portions for pre-positioning head portions in a position to be receivable in the guide channel makes for easy and quick assembly.

Claims: A guide (80) for guiding the movement of an element, such as a window (40) of an automotive vehicle (10), in opposite directions along a channel-shaped stationary track (52,54) and in which the guide (80) at one end (82) thereof is adapted to be secured to the element (40) so as to extend transversely of its direction of movement and at the other end (86) thereof is received within the channel-shaped track (52,54), characterised in that said guide (80) comprises two moulded, synthetic plastics half-members (80a,80b) which are snap-fittingly connected together to provide a guide symmetrical about its longitudinal axis (81), each of said half-members (80a,80b) comprising: a. a base portion (82) which is adapted to be connected with said element (40); b. a shank portion (84) integral with said base portion (82) and which extends perpendicularly thereof; c. a head portion (86) which is adapted to be received in said channel-shaped track (52,54) and which is aligned with said shank portion (84) in the as-moulded condition; d. a neck portion (88) integrally-hinged via hinge means (90,92) to said shank portion (84) and said head portion (86); e. a bowed leaf portion (94) integral at its opposite ends with said shank portion (84) and said head portion (86) and bridging said neck portion (88); and f. co-operable means (96) on said shank portion (84) of said half-members (80a,80b) for snap-fittingly connecting said shank portions (84) of the half-members (80a,80b) together, with their respective base portions (82), shank portions (84) and head portions (86) aligned back to back to one another; said bowed leaf portions (94) engaging each other as the half-members (80a,80b) are connected together and causing said hinge means (90,92) and neck portions (88) thereof to deflect and move said head portions (86) away from each other and from their aligned, as-moulded condition to position the head portions (86) so that their free ends (98) face in directions away from each other and so that the head portions (86) have their central axes (100) extending transversely of said longitudinal axis (81) of said guide (80). A guide according to claim 1, in which, for each of said half-members (80a,80b), the base portion (82) is a generally planar base portion which is adapted to abut with said element (40); the shank portion (84) has a generally planar back (112); the head portion (86) includes a circular end portion (130) which is adapted to be received in said channel-shaped track (52,54); the neck portion (88) is integrally-hinged at one end via a first hinge means (90) to said shank portion (84) and integrally-hinged at its other end via a second hinge means (92) to said head portion (86), said first and second hinge means being self-biased towards a normal as-moulded free-state position so that the neck portion (88) and the head portion (86) are longitudinally aligned with said back (112) of said shank portion (84); and said bowed leaf portions (94) cause said first and second hinge means to pivot in opposition to their self-biasing forces, said first and second hinge means being further pivotable in opposition to their self-biasing forces when said head portions (86) are received in the guide track (52,54) so that the self-biasing forces thereof function to maintain the head portions (86) in engagement with the guide track (52,54) when connected thereto. A guide according to claim 1, in which the stationary track is a C-shaped stationary track (52,54), and in each of said half-members (80a,80b): a. said base portion is a semi-circular, generally planar base portion (82) which is adapted to abut against and be connected with said window (40); b. said shank portion (84) has a planar back (112) integral with said base portion (84) along its chordal end and which extends perpendicularly thereof, said shank portion (84) also having a reinforcing rib (116) integral with said back (112) and said base portion (82) whereby said shank portion (84) and said base portion (82) are rigid; c. said head portion (86) includes a pair of spaced circular flanges (132,134) which are adapted to be received in said C-shaped track (52,54), said head portion (86) having a central axis (100) which is longitudinally aligned with the plane of said back (112) of said shank portion (84) in the as-moulded condition; d. said neck portion (88) is comprised of a pair of laterally spaced neck portions (88a,88b), each of which is integrally-hinged at one end to said shank portion (84) via first hinge means (90) and is integrally-hinged at the other end to said head potion (86) via second hinge means (92), said first and second hinge means (90,92) being self-biased towards a normal, as-moulded, free-state position so that the laterally spaced neck portions (88a,88b) and head portion (86) are longitudinally aligned with said back (112) of said shank portion (84); and e. said bowed leaf portion (94) is located between said laterally spaced neck portions (88a,88b), said leaf portion (94) having a length greater than the laterally spaced neck portions (88a,88b); and said first and second hinge means (90,92) on each half-member (80a,80b) are further pivotable in opposition to their self-biasing forces when said head portions (86) of the assembled guide (80) are received in the guide track (52,54) so that the self-biasing forces thereof function to maintain the head portions (86) in engagement with the guide track (52,54) when connected thereto. A guide according to claim 2 or 3, in which said co-operable means comprises a pair of through apertures (170) at diagonally opposite locations on said back (112) of said shank portion (84) of each half-member (80a,80b) and a pair of perpendicularly-extending, headed, deflectable, protrusions (142) integral with said back (112) of said shank portion (84) of each half-member (80a,80b) at opposite diagonal locations thereon, said protrusions (142) on said back (112) of said shank portion (84) on each half-member (80a,80b) being snap-fittingly received through the respective apertures (140) in the back (112) of the shank portion (84) of the other half-member (80a,80b) to connect the half-members (80a,80b) together. A guide according to claim 2 or 3, in which the first hinge means (90) can be pivoted through an angle of approximately 35° from its as-moulded condition and in which the second hinge means (92) can be pivoted through an angle of approximately 60° from its as-moulded condition. A guide according to claim 2, in which said head portions (86) each have a separate wheel member (150) attached thereto for engaging the guide track (52,54). A guide according to claim 2, in which said head portion (86) includes a pair of laterally spaced circular flanges (132,134) which define a wheel for engaging the guide track (52,54). A guide according to claim 3, in which said head portion (86) includes axially and transversely extending integral reinforcing ribs (136) adjacent said bowed leaf portion (94) and located between said second hinge means (92) and the circular flange (132) most adjacent said laterally spaced neck portions (88a,88b). A guide according to claim 8, in which said laterally spaced neck portions (88a,88b) each have a transversely extending reinforcing rib (137) adjacent said bowed leaf portion (94). A guide according to claim 9, in which the reinforcing ribs (137) on said laterally spaced neck portions (88a,88b) and the reinforcing ribs (136) on said head portion (86) have adjacent ends which are engageable with each other to limit the extent to which the first and second pivot means (90,92) can be pivoted.

Inventors: WARREN, JAMES ROLAND
Applicants: GENERAL MOTORS CORPORATION
Application year: 1988
Main classification: B60J1
IPC codes: B60J1, B60J10, E05F11