Plug cap assembly

Abstract

A plug cap assembly for use on a plug (10) comprises a plug cap (20) configured for releasable arrangement on at least a part of a plug head portion, and comprises a flexible connection member (21) having a first end and a second end, a flexible connection (23) between a cap top portion (26) and said second end, and a connection element (24; 24′) releasably connected to the plug or to a cable (9). The flexible connection member may be moved with respect to the connection element and a suspended length (1) may be adjusted such that it is less than a distance (d) between the suspension structure (25) and an adjacent vehicle body (3).

Claims

1. A plug cap assembly for use on a plug having a handle portion and a head portion, said head portion comprising at least one electrical contact member and wherein at least a part of the head portion is configured for insertion into a receptacle on a vehicle having an outer body surface; the plug cap assembly comprising a plug cap configured for releasable arrangement on at least a part of the head portion, wherein the plug cap assembly comprises: a flexible connection member having a first end and a second end; a flexible connection between a cap top portion and said second end; and a connection element attached to the plug or to a cable which is connected to the plug, said connection element defining one of a plurality of possible points of suspension along the flexible connection member; wherein said points of suspension lie between the first and second ends of the flexible connection member; wherein the flexible connection member is connected to, and may be moved with respect to, the connection element.

2. The plug cap assembly of claim 1, wherein the flexible connection is a hinged connection.

3. The plug cap assembly of claim 1, wherein the flexible connection member is a band or strap.

4. The plug cap assembly of claim 1, wherein the connection element comprises at least one suspension structure such that the flexible connection member may be moved with respect to the suspension structure changing the point of suspension along the flexible connection member and a total suspended length of a suspended portion of the flexible connection member and the hanging height of the cap may be adjusted.

5. The plug cap assembly of claim 1, wherein the flexible connection member comprises a stopper element.

6. The plug cap assembly of claim 1, wherein the flexible connection member comprises a loop portion on the cable end of the connection element.

7. The plug cap assembly of claim 1, wherein the flexible connection member is an elastic member.

8. A method of using the plug cap assembly according claim 1, in which the plug is inserted into a receptacle in a vehicle such that the connection element is located a distance from a portion of the vehicle body adjacent to said receptacle, comprising: adjusting the total suspended length such that the total suspended length is less than said distance.

9. The plug cap assembly of claim 1, wherein the connection element is removably attached, whereby the connection element may be removed, replaced or retrofitted.

10. The plug cap assembly of claim 9, wherein the connection element comprises a hinged or flexible portion and a locking mechanism.

11. The plug cap assembly of claim 1, wherein the connection element is attached to the handle portion.

12. The plug cap assembly of claim 11, wherein the handle portion comprises an end portion and the connection element is attached to or integrated with the end portion.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) These and other characteristics of the invention will become clear from the following description of an embodiment of the invention, given as a non-restrictive example, with reference to the attached schematic drawings, wherein:

(2) FIG. 1 is a perspective view of the invented cap arrangement, in which the cap is attached to and suspended from a cable by the flexible connection member;

(3) FIG. 2 is a side view of the embodiment and arrangement as shown in FIG. 1;

(4) FIG. 3 is a perspective view of the embodiment illustrated in FIGS. 1 and 2, where the cap is placed on the plug end;

(5) FIG. 4 is a side view of the embodiment and arrangement as shown in FIG. 3;

(6) FIG. 5 is a side view corresponding to that of FIG. 3, but illustrating another embodiment of the flexible connection member;

(7) FIG. 6 is a side view of the same embodiment as illustrated in FIG. 5, showing the cap being attached to and suspended from a cable by the flexible connection member;

(8) FIG. 7 is a side view corresponding to that of FIG. 3, but illustrating yet another embodiment of the flexible connection member;

(9) FIG. 8 is a side view of the same embodiment as illustrated in FIG. 7, showing the cap being attached to and suspended from a cable by the flexible connection member; and

(10) FIG. 9 is a side view which illustrates another embodiment of the connection element.

DETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

(11) The following description may use terms such as “horizontal”, “vertical”, “lateral”, “back and forth”, “up and down”, “upper”, “lower”, “inner”, “outer”, “forward”, “rear”, etc. These terms generally refer to the views and orientations as shown in the drawings and that are associated with a normal use of the invention. The terms are used for the reader's convenience only and shall not be limiting.

(12) FIGS. 1 and 2 show a charger plug 10 which is connected to a cable 9. The plug 10, which per se is well known in the art, comprises a handle portion 11 and a head portion 12. The handle portion comprises an end portion 16, optionally flexible and ribbed, formed around a portion of the cable. The head portion comprises a plurality of female contact members (receptacles) 13 recessed in a surrounding collar 14, in the following also referred to as the plug end. The collar 14 is designed to fit into a complementary shaped receptacle (not shown) and the female receptacles 13 are designed to receive complementary shaped male contact pins (not shown), the object to be charged, for example an electric vehicle. The collar 14 is radially recessed from the remainder of the head portion 12 outer surface, whereby a shoulder 15 is formed.

(13) The cable 9, only a part of which is shown in the figures, may extend to a charging station (not shown) in a manner which is well known in the art. A flexible connection member 21, in the illustrated embodiment in the form of a band 21, is movably connected to the cable 9 via a connection element 24 provided with suspension structures, in the illustrated embodiment in the form of slots, 25 that are configured for movable support for the flexible connection member 21. The flexible connection member 21 may thus be moved back and forth in the suspension structures (slots) 25. The connection element 24 is in the illustrated embodiment configured for releasable attachment to the cable 9, in the vicinity of the handle portion 11. In the illustrated embodiment, the connection element 24 comprises a hinged or flexible portion (not shown) on one side and a locking mechanism 27 on the opposite side. The locking mechanism 27 (e.g. a snap-lock device) may be opened and closed by a user, whereby a connection element 24 may be removed, replaced or retrofitted. The connection element 24 may be dimensioned such that it fits snugly around the cable and thus is stationary with respect to the cable, or may have a loose fit around the cable. In another embodiment (see FIG. 9 and associated description below) the connection element 24 is attached to the handle portion 11. It should also be understood that a one-slot configuration is conceivable. A stopper element 22 is attached to one (a first) end of the flexible connection member 21 in order for that end to be pulled through the slots 25. The other (a second) end of the flexible connection member (band) 21 is connected to a top portion 26 of a cap 20. The cap is intended to be placed over the plug collar 14 when the plug is not in use (as shown in FIGS. 3 and 4) serves a function to cover and protect the contact members 13.

(14) The flexible connection member (band) 21 second end is in the illustrated embodiment connected to the cap top portion 26 via a flexible connection 23, whereby the cap is oriented with the top portion 26 substantially horizontally and the cap collar 20a pointing downwards, when the cap 20 is suspended by the band 21 as shown in FIGS. 1 and 2. The flexible connection 23 may be a hinged connection or other connection which allows the cap to assume the orientation as shown in FIGS. 1 and 2.

(15) When the plug 10 is not in use, the cap is placed over the plug end and the band is pulled through the slots 25, as shown in FIGS. 3 and 4. A sufficient length of the band 21, combined with the stopper 22, ensures that the band first end is not pulled through the slots.

(16) When the plug 10 is in use for its intended purpose, it is inserted into a receptacle (not shown), for example on a vehicle, and the cap is suspended by a portion of the band 21, as shown in FIGS. 1 and 2. That portion of the flexible connection member (band) 21 which is on the same side of the slots 25 as the cap 20, is identified with reference number 21a. In FIG. 2, a vehicle body 3 is indicated by a dotted line. In this configuration, the band is pulled so far back that the total suspended length/(the length of the band portion 21a and the height of the cap) is less than the distance d (the distance between the body 3 and the point of suspension for the band portion 21a). This prevents the cap from impinging on the vehicle body 3. Also, the flexible (for example hinged) connection 23 ensures that the cap collar 20a always points downwards, whereby accumulation of dust, water or snow is prevented. The cap is preferably manufactured of a plastic or rubber material.

(17) FIGS. 5 and 6 illustrate another embodiment of the flexible connection member 21, in the illustrated embodiment a band (or strap). In this embodiment, the above mentioned first end of the band 21 is fixedly attached to the connection element 24, whereby a loop portion 21b is formed on the cable side of the connection element 24. A modified stopper element 22′ is slidably connected to the loop portion 21b. When the plug 10 is in use for its intended purpose, as described above with reference to FIG. 2, a user may pull back on the stopper element 22′ (as indicated by the arrow in FIG. 5) to enlarge the loop portion 21b such that the total suspended length/(the length of the band portion 21a and the height of the cap) is less than the distance d (the distance between the body 3 and the point of suspension for the band portion 21a), as shown in FIG. 6. This prevents the cap from impinging on the vehicle body 3.

(18) FIGS. 7 and 8 illustrate yet another embodiment, in which the flexible connection member 21′ is fixedly attached to the connection element 24 and comprises an elastic material. In FIG. 7, the plug 10 is illustrated as being in use for its intended purpose, as described above with reference to FIG. 2. Here, the elastic connection member (such as an elastic band) 21′ is in its relaxed (unstretched) state and thus dimensioned such that the total suspended length/(the length of the elastic band 21′ and the height of the cap) is less than the distance d (the distance between the body 3 and the point of suspension for the band portion 21a). This prevents the cap from impinging on the vehicle body 3. When the plug 10 is not in use, the cap 20 is placed over the plug end and the elastic band 21′ is extended (stretched) as shown in FIG. 8.

(19) FIG. 9 illustrates an embodiment of the invention in which the connection element (denoted 24′) is attached to the handle portion 11. More specifically, the connection element 24′ is an integral part of the end portion 16. Although not illustrated, the connection element may be attached to other portions of the handle portion. It should be understood that this embodiment may be combined with any one of the embodiments described above.

(20) Although the invention has been described with reference to a plug having a head portion with a number of female receptacles recessed in a protective collar, it should be understood that the invention is equally applicable for use on a plug with pins (male ends) for insertion into a receptacle.

(21) Aspects

(22) Aspect A. A plug cap assembly for use on a plug (10) having a handle portion (11) and a head portion (12), said head portion (12) comprising at least one electrical contact member (13) and wherein at least a part of the head portion is configured for insertion into a receptacle on a vehicle having an outer body surface (3); the plug cap assembly comprising a plug cap (20) configured for releasable arrangement on at least a part of the head portion, wherein the plug cap assembly comprises: a flexible connection member (21; 21′) having a first end and a second end; a flexible connection (23) between a cap top portion (26) and said second end; and is characterized by a connection element (24; 24′) attached to the plug or to a cable (9) which is connected to the plug, said connection element comprising a point of suspension for the flexible connection member;

(23) wherein the flexible connection member (21; 21′) is connected to, and may be moved with respect to, the connection element (24; 24′) and the total suspended length (l) of a suspended portion (21a) of the flexible connection member and the height of the cap (20) may be adjusted.

(24) Aspect B. The plug cap assembly of aspect A, wherein the flexible connection (23) is a hinged connection.

(25) Aspect C. The plug cap assembly of aspect A or aspect B, wherein the flexible connection member (21) is a band or strap.

(26) Aspect D. The plug cap assembly of any one of aspects A-C, wherein the point of suspension comprises at least one suspension structure (25) allowing a movable suspension of the flexible connection member (21), such that the flexible connection member may be moved with respect to the suspension structure and the suspended length (l) of a suspended band portion (21a) and the height of the cap (20) may be adjusted.

(27) Aspect E. The plug cap assembly of any one of aspects A-D, wherein the flexible connection member (21) comprises a stopper element (22; 22′).

(28) Aspect F. The plug cap assembly of any one of aspects A-E, wherein the flexible connection member (21) comprises a loop portion (21b) on the cable side of the connection element (24; 24′).

(29) Aspect G. The plug cap assembly of any one of aspects A-C, wherein the flexible connection member is an elastic member (21′).

(30) Aspect H. The plug cap assembly of any one of aspects A-G, wherein the connection element (24; 24) is removably attached, whereby the connection element (24) may be removed, replaced or retrofitted.

(31) Aspect I. The plug cap assembly of aspect H, wherein the connection element (24; 24′) comprises a hinged or flexible portion and a locking mechanism (27).

(32) Aspect J. The plug cap assembly of any one of aspects A-I, wherein the connection element (24′) is attached to the handle portion (11).

(33) Aspect K. The plug cap assembly of aspect J, wherein the handle portion (11) comprises an end portion (16) and the connection element (24′) is attached to or integrated with the end portion (16).

(34) Aspect L. A method of using the plug cap assembly according any one of the aspects A-K, in which the plug is inserted into a receptacle in a vehicle such that the connection element (24) is located a distance (d) from a portion of the vehicle body (3) adjacent to said receptacle, characterized by adjusting the total suspended length (l) such that the total suspended length (l) is less than said distance (d).