GB2250561A - Joints - Google Patents

Joints Download PDF

Info

Publication number
GB2250561A
GB2250561A GB9023958A GB9023958A GB2250561A GB 2250561 A GB2250561 A GB 2250561A GB 9023958 A GB9023958 A GB 9023958A GB 9023958 A GB9023958 A GB 9023958A GB 2250561 A GB2250561 A GB 2250561A
Authority
GB
United Kingdom
Prior art keywords
joint
nut
tube
bolt
flattened
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.)
Granted
Application number
GB9023958A
Other versions
GB2250561B (en
GB9023958D0 (en
Inventor
Terence Humphreys
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LEW WAYS Ltd
Original Assignee
LEW WAYS Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by LEW WAYS Ltd filed Critical LEW WAYS Ltd
Priority to GB9023958A priority Critical patent/GB2250561B/en
Publication of GB9023958D0 publication Critical patent/GB9023958D0/en
Publication of GB2250561A publication Critical patent/GB2250561A/en
Application granted granted Critical
Publication of GB2250561B publication Critical patent/GB2250561B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
    • F16B7/04—Clamping or clipping connections
    • F16B7/044—Clamping or clipping connections for rods or tubes being in angled relationship
    • F16B7/048—Clamping or clipping connections for rods or tubes being in angled relationship for rods or for tubes without using the innerside thereof
    • F16B7/0486—Clamping or clipping connections for rods or tubes being in angled relationship for rods or for tubes without using the innerside thereof forming an abutting connection of at least one tube
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Toys (AREA)

Abstract

A joint between a pair of tubes (Figure 1) has one tube 16 provided with a flattened end and extending transversely of the length of the other tube 10. A bolt 12 extends diametrically of the other tube 10 and through a hole in the flattened end. The flattened end is enclosed in a plastics sleeve which has a projection so that it also encloses the nut so as to protect the same against weather and also hold the nut against turning. <IMAGE>

Description

JOINTS This invention relates to joints made between pairs of tubes, or the like, where one of the tubes has an end generally flattened to extend transversely of the other, and a fixing bolt or like extends diametrically of said other tube and through a hole in the flattened end.
Joints of this kind are made in lightweight structures for childrens activity toys such as swings, climbing frames and the like, and the object of the invention is to provide a more satisfactory joint for these purposes.
According to the invention, a joint of the kind described has the flattened end enclosed in a sleeve of plastics material having an integral hollow projection to receive the nut of the fixing bolt.
The sleeve may be moulded and due to its flexibility and possibly the slight resilience of the plastics material which is suitable for injection moulding, may closely follow the contours of the parts when the joint is assembled and serve to protect end edges of steel tube against exposure to weather and hence corrosion.
Additionally, the said hollow projection may hold the nut against turning when the bolt is inserted and is screwed home, and the plastics material may have the effect of preventing the nut joint becoming loose in use, i.e. act as a lock-nut.
Two embodiments of the invention are now illustrated with reference to the accompanying drawings.
Figure 1 is a sectional view of a joint; and Figure 2 is a sectional view of a second joint.
Turning first to Figure 1, the first tube 10 is diametrically apertured to accommodate the bolt 12 with the head 14 at the opposite side of the tube from that abutting the second of the tubes.
The second tube 15 has an end flattened and contoured so as to lie in closely spaced relationship to the outer diameter of the tube 10 over an arcuate portion extending around the bolt.
The encapsulating sleeve comprises a generally tubular portion 20 shaped and dimensioned to correspond to the end of the tube 16, and formed integrally with a nut enclosing portion 22 and a bolt end enclosing portion 24. It will be noted that the sleeve is completely closed at all points except at the end 26 through which the tube is to be inserted. The nut 28 can be prepositioned in the portion 22, and is held in place due to the dimensions which are chosen so as to grip the nut.
When the bolt is pushed through and screwed into the nut, the portion 22 will hold the nut against turning at least during initial tightening. The portion 22 may be hexagonal externally and of suitable dimensions to receive a standard spanner so that the nut can be held during final tightening. The portion 24 may be an interference fit with the threads of the bolt over the area 30, and effectively this will provide the same result as if a lock nut were used which will prevent the bolt becoming inadvertently loosened.
In Figure 2 the arrangement differs in that the tube 16 has a flattened end 32 which lies in the same plane as the axis of the tube and is not curved to accommodate to the contour of the tube 10, but in other respects the arrangement is generally the same. However in this instance, the sleeve may be arranged to fit on the flattened portion only and not extend onto the circular portion of the tube 16.

Claims (4)

CLAITS
1. A joint made between a pair of tubes, where one of the tubes has an end generally flattened and extends transversely of the other, and a fixing bolt or like extending diametrically of said other through a hole in the flattened end, characterised in that the flattened end is enclosed in a sleeve of plastics material having an integral hollow projection to receive a nut of the fixing bolt.
2. A joint as claimed in Claim 1 wherein the sleeve is moulded to closely follow the contour of the narts when the joint is assembled.
3. A joint as claimed in Claim 1 and Claim 2 wherein the hollow projection is arranged to hold the nut against turnin when the bolt is inserted.
4. A joint substantially as described with reference to Figure 1 or Figure 2 of the accompanying drawings.
GB9023958A 1990-11-03 1990-11-03 Joints Expired - Fee Related GB2250561B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9023958A GB2250561B (en) 1990-11-03 1990-11-03 Joints

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9023958A GB2250561B (en) 1990-11-03 1990-11-03 Joints

Publications (3)

Publication Number Publication Date
GB9023958D0 GB9023958D0 (en) 1990-12-19
GB2250561A true GB2250561A (en) 1992-06-10
GB2250561B GB2250561B (en) 1993-02-24

Family

ID=10684842

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9023958A Expired - Fee Related GB2250561B (en) 1990-11-03 1990-11-03 Joints

Country Status (1)

Country Link
GB (1) GB2250561B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743946A1 (en) * 1997-10-04 1999-04-29 Audi Ag Fixing arrangement for tube forming part of an automotive tow bar structure
DE29804397U1 (en) * 1998-03-13 1999-07-15 Niemann, Hans Dieter, 50169 Kerpen Connection arrangement of two components

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19743946A1 (en) * 1997-10-04 1999-04-29 Audi Ag Fixing arrangement for tube forming part of an automotive tow bar structure
DE19743946C2 (en) * 1997-10-04 2001-05-03 Audi Ag Fastening device
DE29804397U1 (en) * 1998-03-13 1999-07-15 Niemann, Hans Dieter, 50169 Kerpen Connection arrangement of two components

Also Published As

Publication number Publication date
GB2250561B (en) 1993-02-24
GB9023958D0 (en) 1990-12-19

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981103