GB2151570A - Bicycle accessory security device - Google Patents
Bicycle accessory security device Download PDFInfo
- Publication number
- GB2151570A GB2151570A GB08430652A GB8430652A GB2151570A GB 2151570 A GB2151570 A GB 2151570A GB 08430652 A GB08430652 A GB 08430652A GB 8430652 A GB8430652 A GB 8430652A GB 2151570 A GB2151570 A GB 2151570A
- Authority
- GB
- United Kingdom
- Prior art keywords
- clip
- security device
- bicycle
- accessory
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J11/00—Supporting arrangements specially adapted for fastening specific devices to cycles, e.g. supports for attaching maps
- B62J11/02—Supporting arrangements specially adapted for fastening specific devices to cycles, e.g. supports for attaching maps for pumps
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
A security device for a bicycle accessory comprising a clip bent from metal strip so that its ends are adjacent and comprising a first clip portion 1 remote from said ends and shaped to fit around a bicycle frame tube, and a second clip portion 4 adjacent said end and shaped to fit around the accessory to be secured, the ends being rolled to form tubular lugs 10 which are coaxially aligned when the clip is closed and can receive fastening means to retain the clip in the closed position. <IMAGE>
Description
SPECIFICATION
Bicycle accessory security device
This invention relates to an anti-theft or security device for readily detachable bicycle accessories, and especially, but not exclusively, for a bicycle pump.
Thefts of bicycles and thefts of articles from bicycles which are left unattended are regrettably common. Although, by securing it to an immovable object, it is relatively simple to protect the bicycle itself against theft, it is less easy so to protect accessories carried on the bicycle. The theft of bicycle pumps is particularly prevalent, and although a bicycle pump is not normally an expensive item, its theft can be most inconvenient for the bicycle owner.
One security device for a bicycle pump that has already been proposed, comprises a clip bent from metal strip to an hour-glass profile open at one end comprising a first portion shaped to engage around a frame tube of the bicycle, a second portion adapted to engage around the accessory to be protected, and holes adjacent the open end through which the hasp of a padlock can be passed to lock the clip in a closed position in which it grips both the frame tube and the said accessory.
Such security devices have achieved little success, possibly because it is relatively easy to slide the pump out of engagement with the closed and locked clip.
According to this invention there is provided a security device for a bicycle accessory comprising a clip bent from metal strip so that its ends are adjacent and comprising a first clip portion remote from said ends and shaped to fit around a bicycle frame tube, and a second clip portion adjacent said ends and shaped to fit around the accessory to be secured, the ends being rolled to form tubular lugs which can be coaxially aligned to close the clip and when so aligned can receive fastening means to retain the clip in the closed position. The fastening means may, for example, be the hasp of a padlock.
The clip is preferably of a one-piece construction of a resilient material such as spring steel. It may be covered with a protective material such as a plastics material or a natural or synthetic rubber to avoid damage to the surface of the frame tube and/or the accessory, whilst at the same time increasing the coefficient of friction between the clip and said frame tube and/or accessory, The clip may alternatively be painted or galvanised.
In order to prevent an elongated accessory with a smooth surface (e.g. a bicycle pump) from being slid out from the clip, there is preferably provided auxiliary retaining means to fit securely around the accessory, which retaining means has surfaces which can interengage with the clip when the accessory is fitted to the bicycle.
The auxiliary retaining means may comprise a pair of spaced plastics sleeves which can be heat-shrunk onto the pump body, but is preferably in the form of a resilient open snap ring which can be expanded to fit tightly around and thus grip the bicycle pump, the snap ring having axially spaced projections at each end between which the second curved portion of the clip can be located and which provide the retaining surfaces for interengagement with the clip. Thus, the snap ring prevents the pump from being slid out from engagement with the clip. The snap ring would remain permanently fitted to the pump.
Preferably, the spaced projections on the retaining means are provided with tubular lugs which can be aligned coaxially with the tubular lugs on the clip so that the hasp of a padlock can pass through both the lugs on the clip and the lugs on the retaining means.
As a few bicycle pumps on the market are of smaller diameter than most others the antitheft device may also include a short length of tubing, e.g. of rubber, which can be glued or otherwise fixed around the pump to increase its diameter to make it compatible with that of the clip and also, possibly increase the friction between the locked clip and the surface which it engages.
Such a length of tubing would also assist in preventing the pump from being slid out from the clip.
The first clip portion is preferably roughly circular to fit a frame tube of circular crosssection and its diameter may vary depending on the size of the frame tube to which it is to be fitted. Most bicycles having a conventional frame have 1-1/8 inch diameter tubes, but other types of bicycle (e.g. bicycles of the "shopper" design and certain folding bicycles which do not have a cross-bar), employ thicker tubing.
An anti-theft device embodying the invention will now be described by way of example and with reference to the accompanying drawings.
The device shown in Figure 1 comprises a one-piece clip of spring steel, comprising a first curved portion 1 so dimensioned as to fit around a standard 1-1/8 inch diameter bicycle tube. Extending generally-parallel from this first curved portion 1 are two leg portions 2 and 3, which are bowed to provide a second curved portion 4, which will fit around a conventional bicycle pump, either of the type which is mounted on pegs integral with the bicycle frame, or of the frame-fitting type.
The respective ends of the leg portions 2, 3 are provided with tubular portions 9, 10 formed by rolling staggered extensions of the second curved portion 4 of the clip, the tubes 9, 10 being coaxially aligned when the clip is in the closed position. The aligned tubular portions 5, 6 can receive the hasp of a padlock when the clip is closed, thereby preventing opening of the clip. It has been found in practice that by virtue of the aligned tubular portions, this clip is substantially more secure than prior art clips. The whole clip is covered in a protective synthetic plastics material, such as polyvinylchloride or polyethylene.
In use, the two lugs 5, 6 are pulled apart until the clip can be pushed onto one of the tubes of the bicycle frame (i.e. the tube against which the pump is normally stored), with the first curved portion 1 fitting around the tube. The pump to be protected against theft is then fitted into the second curved portion of the clip 4 so that it is in its normal storage position on the bicycle, parallel to the frame tube enclosed by the first curved portion 1. The hasp of a padlock (not shown) of conventional design is then fitted through the aligned perforations tubes 9, 10 so that the two legs 2, 3 are held together, and can no longer be forced apart. A plastics coating on the clip, especially on its inner surfaces, protects both the frame tube and the pump from damage by the clip, and also facilitates gripping of the frame tube and the pump by the clip.The pump is then protected against theft because it cannot be removed from the bicycle without first unlocking the padlock.
In order to prevent theft of a pump having a smooth, projection-free cylindrical profile by sliding the pump out of the locked clip, the clip may be supplied with two sleeves of heatshrinkable plastics material (e.g. "VINLOCK 29' '-Trade Mark) to be fitted to the pump barrel so that they are spaced apart, and then shrunk to grip the barrel by gentle heating.
Alternatively, non-heat shrinkable sleeves could simply be glued to the pump barrel.
The anti-theft clip would be fitted to the pump barrel between the sleeves and the sleeves would prevent the pump from being slid out from the clip.
Figures 2 and 2a show a clip similar to that shown in Figure 1, used in connection with a snap-ring. The snap-ring 20 is of hardened spring steel and is of such a diameter that it can be expanded and "snapped" around the pump barrel, which it then grips so tightly that it cannot be slid along the barrel without the exertion of a great deal of force. The snapring 20 is part cylindrical and each of its two ends which define the opening which enables the ring to be expanded comprises a pair of spaced curved projecting lugs 21 defining a recessed edge 22. The edges 22 are sufficiently wide to receive the second curved portion 4 of a clip 23, which is as shown in
Figure 1, when the snap-ring 20 and the clip 23 are fitted to a bicycle pump (not shown) in the configuration shown in Figure 2a, with the tubes 9, 10 held together by the hasp 24 of a padlock 25 as shown. The lugs 21 on the snap-ring prevent the clip 23 from being slid out of engagement with the pump.
Figures 3 and 3a show a device similar to that shown in Figures 2 and 2a. However, one side of the snap-ring 20 has been extended so that lugs 26 form a cylindrical tube with a recess 27 between them, which, when aligned with lugs 9 and 10, can receive the hasp of a padlock, thus ensuring the snap-ring containing the barrel of a pump cannot be moved out of contact with clip 23. Thus secured, the pump could not be removed even if the waist of clip 23 were prised apart.
Claims (6)
1. A security device for a bicycle accessory comprising a clip bent from metal strip so that its ends are adjacent and comprising a first clip portion remote from said ends and shaped to fit around a bicycle frame tube, and a second clip portion adjacent said ends and shaped to fit around the accessory to be secured, the ends being rolled to form tubular lugs which are coaxially aligned when the clip is closed and can receive fastening means to retain the clip in the closed position.
2. A security device according to claim 1, further including retaining means adapted to fit securely around the accessory and having retaining surfaces to interengage with the clip when the accessory is fitted to a bicycle to prevent the accessory from being slid relatively to and out of engagement with the clip.
3. A security device according to claim 2 wherein the retaining means comprises a pair of plastics sleeves which can be shrunk or glued into the pump body spaced apart so that the clip can fit between them.
4. A security device according to claim 2, wherein the retaining means comprises a resilient open snap-ring which can be expanded to fit tightly around and thus grip the bicycle pump, the snap-ring having axially spaced projections at each end between which projections the second curved portion of the clip can be located and which provide the retaining surfaces for interengagement with the clip.
5. A security device according to claim 4, wherein the spaced projections at the end are provided with tubular lugs which can be aligned coaxially with the tubular lugs on the clip so that the hasp of a padlock can pass through both the lugs on the clip and the lugs on the retaining means.
6. A security device according to any preceding claim, including a length of tubing, which can be fixed around the pump to increase its diameter to be compatible with that of the clip.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB838333760A GB8333760D0 (en) | 1983-12-19 | 1983-12-19 | Cycle pump guard |
GB848417883A GB8417883D0 (en) | 1984-07-13 | 1984-07-13 | Cycle pump guard |
GB848425380A GB8425380D0 (en) | 1984-10-08 | 1984-10-08 | Cycle pump guard |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8430652D0 GB8430652D0 (en) | 1985-01-16 |
GB2151570A true GB2151570A (en) | 1985-07-24 |
Family
ID=27262240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08430652A Withdrawn GB2151570A (en) | 1983-12-19 | 1984-12-05 | Bicycle accessory security device |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2151570A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2176755A (en) * | 1985-06-26 | 1987-01-07 | Brian Bradley | Bicycle pump security clamp |
-
1984
- 1984-12-05 GB GB08430652A patent/GB2151570A/en not_active Withdrawn
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2176755A (en) * | 1985-06-26 | 1987-01-07 | Brian Bradley | Bicycle pump security clamp |
Also Published As
Publication number | Publication date |
---|---|
GB8430652D0 (en) | 1985-01-16 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |