GB1592054A - Releasable fastening mechanism for tilting cabs on vehicles - Google Patents

Releasable fastening mechanism for tilting cabs on vehicles Download PDF

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Publication number
GB1592054A
GB1592054A GB5325376A GB5325376A GB1592054A GB 1592054 A GB1592054 A GB 1592054A GB 5325376 A GB5325376 A GB 5325376A GB 5325376 A GB5325376 A GB 5325376A GB 1592054 A GB1592054 A GB 1592054A
Authority
GB
United Kingdom
Prior art keywords
jaw
pawl
bar
plates
cab
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.)
Expired
Application number
GB5325376A
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.)
Bloxwich Lock and Stamping Co Ltd
Bloxvich Lock Stamping Co Ltd
Original Assignee
Bloxwich Lock and Stamping Co Ltd
Bloxvich Lock Stamping Co 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 Bloxwich Lock and Stamping Co Ltd, Bloxvich Lock Stamping Co Ltd filed Critical Bloxwich Lock and Stamping Co Ltd
Priority to GB5325376A priority Critical patent/GB1592054A/en
Publication of GB1592054A publication Critical patent/GB1592054A/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62DMOTOR VEHICLES; TRAILERS
    • B62D33/00Superstructures for load-carrying vehicles
    • B62D33/06Drivers' cabs
    • B62D33/063Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other
    • B62D33/067Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable
    • B62D33/07Drivers' cabs movable from one position into at least one other position, e.g. tiltable, pivotable about a vertical axis, displaceable from one side of the vehicle to the other tiltable characterised by the device for locking the cab in the tilted or in the driving position
    • B62D33/071Locking devices for cabins in driving position; Shock and vibration absorbing devices therefor

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Lock And Its Accessories (AREA)

Description

(54) RELEASABLE FASTENING MECHANISM FOR TILTING CABS ON VEHICLES (71) We: THE BLOXWICH LOCK AND STAMPING COMPANY LIMITED, a British Company of Alexander Works, Bell Lane, Bloxwich, Walsall WS3 2JR, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to a releasable fastening mechanism for use with tilting cabs on vehicles.
In commercial vehicles having forwardly mounted engines it is common practice to hinge the cab at its forward end on the chassis so that the cab can be tilted forward to give access to the engine and ancillary mechanism.
According to the invention, means for releasably securing the rear end of a tilting cab to the chassis or frame of a vehicle, comprises a bar or equivalent keeper member on the cab or on the chassis or frame, in combination with a housing which is adapted to be fixed to the chassis or frame or to the cab respectively and which defines a mouth to receive the bar, the housing containing a pivoted jaw which is adapted to retain the bar in the mouth when the jaw is in a closed position, the jaw being spring-loaded from the closed position towards an open position in which the bar is released from the mouth, and the housing also containing a pivoted pawl which is spring-loaded towards a position in which it locks the jaw in the closed position and the pawl is releasable by a cable or other transmission member, the jaw and/ or the pawl comprising a pair of larger plates between which is sandwiched one or more smaller plates, the arrangement being such that the edges of the larger and smaller plates provide a contact and wearing surface for the bar and/or the jaw respectively.
Preferably the spring-loading means for that member which comprises the larger and smaller plates is located between the larger plates and bears against an edge portion of the smaller plate or of one of the smaller plates.
The spring loading means preferably comprises a torsion spring which is coiled around a pivot pin which passes through the larger plates, and the spring has an arm which bears against the edge portion of the smaller plate or of one of the smaller plates.
Preferably there are two smaller plates sandwiched between the larger plates.
The pawl preferably includes a plate which is extended to form a lever for connection to the cable or other transmission member.
The plates are preferably riveted together.
A releasable fastening mechanism according to the invention is illustrated by way of example in the accompanying diagrammatic drawings in which: Figure 1 is a perspective view of the housing, Figure 2 is an end view of the housing in part section, Figure 3 is a vertical section on the line 3 3 of Figure 2 with the moving parts of the mechanism in the released condition, Figure 4 is a side elevation showing the moving parts in dotted lines in the fastened and locked position, and Figure 5 is an end view of the locking pawl.
The housing of the mechanism illustrated is formed from two complementary pressings 1,2 of stout sheet steel. Each pressing has a peripheral flange 3 extending at right angles to the plane of the pressing. The pressings are assembled together with their flanges facing each other and are secured together by rivets or bolts 4 with tubular spacers 5 to leave a gap between the adjacent edges of the flanges.
Aligned gaps 6 with curved and inclined edges are formed in the upper ends of the pressings to form a mouth for the entry of a keeper bar 7 mounted on the cab, the flanges 3 extending around the gaps 6.
A jaw 8 for engagement with the bar 7 is pivotally mounted between the pressings on a tubular pivot pin 9 of which the ends are spun over its aligned recesses 10 formed in the pressings. The jaw is formed by two co operating parallel larger plates 23 between which are sandwiched two smaller segmental plates 11. As can clearly be seen from the drawings, the larger and smaller plates 23,11, are partly of the same outline such that a wide contact, bearing and wearing surface is presented to the bar 7. The plates 23,11, are joined together by rivets 24.
The locking pawl 12, as shown more particularly in Figure 5, is similarly constructed to provide a wide contact, bearing and wearing area between it and the jaw.
One of the plates forming the pawl is extended to form a lever 13 which extends downwardly from the housing and has welded to its free end a U-shaped coupling 14 for the connection of a cable or other transmission member.
The pawl is pivotally mounted between the pressings on a tubular pivot pin 15.
The jaw and the pawl are loaded by torsion springs 16,17, mounted on their respective pivot pins and having extended ends or arms 18,19. As can clearly be seen from the drawings, the arms 18,19, bear on a respective edge portion 25,26, of the smaller plates of the jaw and pawl respectively. The springs normally bias the jaw and pawl into the released or open position shown in Figure 2.
The jaw incorporates a notch 20 to receive the keeper bar, and in the released or open position of the jaw the notch lies to one side of the gap 6 in the housing, and a nose 21 forming one side of the notch extends into the gap and abuts a hooked nose 22 of the pawl.
The housing is adpated to be rigidly mounted on the frame or chassis of a vehicle having a tilting cab, in such a position that when the cab is lowered from the tilted position into the normal running position the keeper bar 7, which is rigidly mounted on the cab, drops down into the gap 6 in the housing.
The flanges on the curved and inclined sides of the gap provide a lead-in for the bar and allow for any slight misalignment of the cab relative to the chassis.
As the bar moves downwardly into the gap it bears downwardly on the nose 21 on the jaw and rotates the jaw in a clockwise direction (as seen in Figures 3 and 4), and as the cab reaches the fully lowered position the jaw has been rotated into the angular position shown in Figure 4 in which the bar is trapped in the notch 20 of the jaw.
During this movement of the jaw the nose 21 has passed below the hooked nose 22 on the pawl and the pawl is rotated in an anticlockwise direction by its spring 17 so that the nose 22 engages over the nose 21 of the jaw as shown in Figure 4 and the jaw is locked in the fastened or closed position.
To release the cab the pawl must be swung round clear of the jaw by manual operation of the pawl through the lever 13 which will normally be actuated through a cable or other transmission member from a control at a convenient location on the vehicle.
The jaw and the pawl are wholly enclosed within the housing except for the projecting end of the lever.
In the fastening mechanism illustrated the jaw and pawl are loaded by separate springs but these may be replaced by a single spring designed to load both members.
It will be appreciated that while in the fastening means illustrated the keeper bar is mounted on the cab and the housing on the chassis or frame of the vehicle, the positions of these members can be reversed, the bar being mounted on the chassis or frame and the housing on the cab. With either arrangement the mechanism will normally be duplicated on opposite sides of the vehicle, the pawls in the two housings being connected by a transverse bar or tube so that they open and close in unison.
WHAT WE CLAIM IS: 1. Means for releasably securing the rear end of a tilting cab to the chassis or frame of a vehicle, comprising a bar or equivalent keeper member on the cab or onthe chassis or frame, in combination with a housing which is adapted to be fixed to the chassis or frame or to the cab respectively and which defines a mouth to receive the bar, the housing containing a pivoted jaw which is adapted to retain the bar in the mouth when the jaw is in a closed position, the jaw being spring-loaded from the closed position towards an open position in which the bar is released from the mouth, and the housing also containing a pivoted pawl which is spring-loaded towards a position in which it locks the jaw in the closed position and the pawl is releasable by a cable or other transmission member, the jaw and/or the pawl comprising a pair of larger plates between which is sandwiched one or more smaller plates, the arrangement being such that the edges of the larger and smaller plates provide a contact and wearing surface for the bar and/or the jaw respectively.
2. Means according to Claim 1, in which the spring-loading means for that member which comprises the larger and smaller plates is located between the larger plates and bears against an edge portion of the smaller plate or of one of the smaller plates.
3. Means according to Claim 2, in which the said spring-loading means comprises a torsion spring which is coiled around a pivot pin which passes through the larger plates, and the spring has an arm which bears against the edge portion of the smaller plate or of one of the smaller plates.
4. Means according to any preceding claim, in which there are two smaller plates sandwiched between the larger plates.
5. Means according to any preceding
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (7)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    drawings, the larger and smaller plates 23,11, are partly of the same outline such that a wide contact, bearing and wearing surface is presented to the bar 7. The plates 23,11, are joined together by rivets 24.
    The locking pawl 12, as shown more particularly in Figure 5, is similarly constructed to provide a wide contact, bearing and wearing area between it and the jaw.
    One of the plates forming the pawl is extended to form a lever 13 which extends downwardly from the housing and has welded to its free end a U-shaped coupling
    14 for the connection of a cable or other transmission member.
    The pawl is pivotally mounted between the pressings on a tubular pivot pin 15.
    The jaw and the pawl are loaded by torsion springs 16,17, mounted on their respective pivot pins and having extended ends or arms 18,19. As can clearly be seen from the drawings, the arms 18,19, bear on a respective edge portion 25,26, of the smaller plates of the jaw and pawl respectively. The springs normally bias the jaw and pawl into the released or open position shown in Figure 2.
    The jaw incorporates a notch 20 to receive the keeper bar, and in the released or open position of the jaw the notch lies to one side of the gap 6 in the housing, and a nose 21 forming one side of the notch extends into the gap and abuts a hooked nose 22 of the pawl.
    The housing is adpated to be rigidly mounted on the frame or chassis of a vehicle having a tilting cab, in such a position that when the cab is lowered from the tilted position into the normal running position the keeper bar 7, which is rigidly mounted on the cab, drops down into the gap 6 in the housing.
    The flanges on the curved and inclined sides of the gap provide a lead-in for the bar and allow for any slight misalignment of the cab relative to the chassis.
    As the bar moves downwardly into the gap it bears downwardly on the nose 21 on the jaw and rotates the jaw in a clockwise direction (as seen in Figures 3 and 4), and as the cab reaches the fully lowered position the jaw has been rotated into the angular position shown in Figure 4 in which the bar is trapped in the notch 20 of the jaw.
    During this movement of the jaw the nose 21 has passed below the hooked nose 22 on the pawl and the pawl is rotated in an anticlockwise direction by its spring 17 so that the nose 22 engages over the nose 21 of the jaw as shown in Figure 4 and the jaw is locked in the fastened or closed position.
    To release the cab the pawl must be swung round clear of the jaw by manual operation of the pawl through the lever 13 which will normally be actuated through a cable or other transmission member from a control at a convenient location on the vehicle.
    The jaw and the pawl are wholly enclosed within the housing except for the projecting end of the lever.
    In the fastening mechanism illustrated the jaw and pawl are loaded by separate springs but these may be replaced by a single spring designed to load both members.
    It will be appreciated that while in the fastening means illustrated the keeper bar is mounted on the cab and the housing on the chassis or frame of the vehicle, the positions of these members can be reversed, the bar being mounted on the chassis or frame and the housing on the cab. With either arrangement the mechanism will normally be duplicated on opposite sides of the vehicle, the pawls in the two housings being connected by a transverse bar or tube so that they open and close in unison.
    WHAT WE CLAIM IS: 1. Means for releasably securing the rear end of a tilting cab to the chassis or frame of a vehicle, comprising a bar or equivalent keeper member on the cab or onthe chassis or frame, in combination with a housing which is adapted to be fixed to the chassis or frame or to the cab respectively and which defines a mouth to receive the bar, the housing containing a pivoted jaw which is adapted to retain the bar in the mouth when the jaw is in a closed position, the jaw being spring-loaded from the closed position towards an open position in which the bar is released from the mouth, and the housing also containing a pivoted pawl which is spring-loaded towards a position in which it locks the jaw in the closed position and the pawl is releasable by a cable or other transmission member, the jaw and/or the pawl comprising a pair of larger plates between which is sandwiched one or more smaller plates, the arrangement being such that the edges of the larger and smaller plates provide a contact and wearing surface for the bar and/or the jaw respectively.
  2. 2. Means according to Claim 1, in which the spring-loading means for that member which comprises the larger and smaller plates is located between the larger plates and bears against an edge portion of the smaller plate or of one of the smaller plates.
  3. 3. Means according to Claim 2, in which the said spring-loading means comprises a torsion spring which is coiled around a pivot pin which passes through the larger plates, and the spring has an arm which bears against the edge portion of the smaller plate or of one of the smaller plates.
  4. 4. Means according to any preceding claim, in which there are two smaller plates sandwiched between the larger plates.
  5. 5. Means according to any preceding
    claim, in which the pawl includes a plate which is extended to form a lever for connection to the cable or other transmission member.
  6. 6. Means according to any preceding claim, in which the plates are riveted together.
  7. 7. Means for releasably securing the rear end of a tilting cab to the chassis or frame of a vehicle, which is substantially as described with reference to the accompanying drawing.
GB5325376A 1977-11-22 1977-11-22 Releasable fastening mechanism for tilting cabs on vehicles Expired GB1592054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5325376A GB1592054A (en) 1977-11-22 1977-11-22 Releasable fastening mechanism for tilting cabs on vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5325376A GB1592054A (en) 1977-11-22 1977-11-22 Releasable fastening mechanism for tilting cabs on vehicles

Publications (1)

Publication Number Publication Date
GB1592054A true GB1592054A (en) 1981-07-01

Family

ID=10467150

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5325376A Expired GB1592054A (en) 1977-11-22 1977-11-22 Releasable fastening mechanism for tilting cabs on vehicles

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GB (1) GB1592054A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810162A (en) * 1985-07-10 1989-03-07 J. C. Bamford Excavators Limited Mounting a working implement
DE10308678B4 (en) * 2003-02-28 2005-08-25 Faurecia Autositze Gmbh & Co. Kg Rotary latch lock, in particular for motor vehicle rear seat backrests
GB2437604A (en) * 2006-04-29 2007-10-31 Bloxwich Eng Securing apparatus for vehicle tilting cab with housing
EP2522564A1 (en) * 2011-05-13 2012-11-14 IVECO S.p.A. Anchor device for anchoring a cabin of an industrial vehicle to the chassis of the vehicle itself
RU2588367C2 (en) * 2011-05-13 2016-06-27 Ивеко С.П.А. Device for fixation of industrial machine cabin to machine

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4810162A (en) * 1985-07-10 1989-03-07 J. C. Bamford Excavators Limited Mounting a working implement
DE10308678B4 (en) * 2003-02-28 2005-08-25 Faurecia Autositze Gmbh & Co. Kg Rotary latch lock, in particular for motor vehicle rear seat backrests
GB2437604A (en) * 2006-04-29 2007-10-31 Bloxwich Eng Securing apparatus for vehicle tilting cab with housing
EP2522564A1 (en) * 2011-05-13 2012-11-14 IVECO S.p.A. Anchor device for anchoring a cabin of an industrial vehicle to the chassis of the vehicle itself
WO2012156301A1 (en) * 2011-05-13 2012-11-22 Iveco S.P.A. Anchor device for anchoring a cabin of an industrial vehicle to the chassis of the vehicle itself
CN103687781A (en) * 2011-05-13 2014-03-26 依维柯公司 Anchor device for anchoring a cabin of an industrial vehicle to the chassis of the vehicle itself
RU2588367C2 (en) * 2011-05-13 2016-06-27 Ивеко С.П.А. Device for fixation of industrial machine cabin to machine
CN103687781B (en) * 2011-05-13 2016-08-24 依维柯公司 For the driver's cabin of industrial vehicles being anchored to the anchor on himself chassis
AU2012257852B2 (en) * 2011-05-13 2017-04-13 De Molli Giancarlo Industrie S.P.A. Anchor device for anchoring a cabin of an industrial vehicle to the chassis of the vehicle itself

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19971121