AU2016253578B2

AU2016253578B2 - A vent lock

Info

Publication number: AU2016253578B2
Application number: AU2016253578A
Authority: AU
Inventors: Joshua Tubb
Original assignee: Azuma Design Pty Ltd
Current assignee: Azuma Design Pty Ltd
Priority date: 2015-11-10
Filing date: 2016-11-02
Publication date: 2021-09-02
Anticipated expiration: 2036-11-02
Also published as: AU2016253578A1

Abstract

A VENT LOCK ASTRACT Avent lock (10) that includes abase (11) and a cover (27). Mounted in the cover (27) is a lock tongue (18) that is moved between an extended position and a retracted position. The base (11) has a projection (15) that engages the cover (27) to aid in fixing the cover (27) to the base (11). A threaded fastener passes between the base (11) and cover (37) to fix the cover (27) in position. 2/2 rv\ \ Ir

Description

A VENT LOCK ASTRACT

Avent lock (10) that includes abase (11) and a cover (27). Mounted in the cover (27) is a lock tongue (18) that is moved between an extended position and a retracted position. The base (11) has a projection (15) that engages the cover (27) to aid in fixing the cover (27) to the base (11). A threaded fastener passes between the base (11) and cover (37) to fix the cover (27) in position.

2/2

rv\ \

Ir

A VENT LOCK FIELD

[0001] The present invention relates to locks, and more particularly but not exclusively to vent locks.

BACKGROUND

[0002] Locks, even considerably simple locks, require an assembly. The assembly process can be time consuming, and therefore adds considerably to the cost of the lock.

[0003] Where the lock is of a reasonably simple construction, it is a disadvantage that the assembly cost is substantial portion of the overall cost of the lock.

OBJECT

[0004] It is the object of the present invention to overcome or substantially ameliorate the above disadvantage.

SUMMARY OF INVENTION

[0005] There is disclosed herein a lock assembly including: a base to be fixed to a supporting structure; a tongue slide mounted on the base for linear movement relative thereto between an extended position to engage an adjacent object, and a retracted position; a spring urging the slide to the extended position; a cover attached to the base and enclosing the spring and at least a substantial portion of the slide so that when in the extended position the slide projects outwardly of the cover; means operable by a user to move the slide to the retracted position from the extended position; and wherein the base and cover have a cooperating projection and aperture into which the projection extends to aid in securing the cover to the base, with the lock assembly further including a fastener extending between the cover and base to retain the cover fixed to the base and with the projection captively located with respect to the aperture; and a lock barrel mounted in the cover for angular movement about an axis, the barrel having a projection that is moved angularly about said axis between a first position engaging slide to retain the slide in the extended position, and a further position spaced from the slide permitting movement of the slide.

[0006] Preferably, the spring extends between the base and slide.

[0007] Preferably, the base has the projection, and the cover the aperture.

[0008] Preferably, the tongue slide projects through the aperture with the projection.

[0009] Preferably, the base is longitudinally elongated, so as to have longitudinally opposite end portions, with the aperture and projection located adjacent one end portion, and the threaded fastener the other end portion.

[0010] Preferably, the cover has a further aperture, and the slide a tab projecting through the further aperture that is gripped and manipulated by a user to move the slide to the retracted position.

[0011] Preferably, the barrel is located adjacent the other end portion of the base.

[0012] Preferably, the base has a spring engaging projection, and said slide has an aperture through which the spring engaging projection extends, with the spring extending between the spring engaging projection and said slide.

BRIEF DESCRIPTION OF DRAWINGS

[0013] Preferred forms of the present invention will now be described by way of example with reference to the accompanying drawings wherein:

[0014] Figure 1 is an isometric view of a vent lock;

[0015] Figure 2 is a schematic parts exploded isometric view of the lock assembly of Figure 1;

[0016] Figure 3 is a schematic side elevation of a portion of the lock of Figure 1 being assembled; and

[0017] Figure 4 is a schematic side elevation of the lock of Figure 1 being assembled.

DESCRIPTION OF EMBODIMENTS

[0018] In the accompanying drawings there is schematically depicted a vent lock 10.

[0019] The vent lock 10 includes a base 11 having a mounting plate 12 that is longitudinally elongated and has adjacent one end thereof a projection 13.

[0020] Intermediate the ends of the mounting plate 12 is a second projection 14.

[0021] The step 15 (projection) projects in the general longitudinal direction of extension of the mounting plate 12 and is spaced from the mounting plate 12.

[0022] Extending from the base plate 12 is a support 16 having a generally flat surface 17 but is longitudinally elongated parallel to the mounting plate 12.

[0023] Slidably mounted on the plate 12 for linear movement in the direction 25, is a tongue 18. The direction 25 is generally parallel to the longitudinal direction of the mounting plate 12.

[0024] The tongue slide 18 includes a portion 19 that slides on the plate 12, and a tongue portion 20. The tongue portion 20 is spaced from the portion 19 by means of a connecting part 26. The end extremity of the tongue portion 20 has an aperture 21 that receives an end cap 22.

[0025] Projecting from the tongue portion 20 is a tab 23.

[0026] The portion 19 includes an aperture 24 through which the projection 14 projects so as to be slidable along the aperture 24.

[0027] Fixed to the base 11 is a cover 27. The cover 27 includes longitudinally extending side walls 28, a top wall 29, and transverse end walls 30 and 31.

[0028] The cover 27 is hollow so that the base 11 is receivable therein and is best seen in Figure 4.

[0029] The top wall 29 includes a first aperture 32 through which the tab 23 projects, and a second aperture 33 that receives a lock cylinder barrel 34. The barrel 34 is key operable and includes a cam projection 35, spaced from the longitudinal axis 38 of the barrel 34. When operated, a key turned about the axis 38 cause angular movement of the cam projection 35 angularly about the axis 38.

[0030] Extending between the tongue slide 18 and projection 14 is a spring 36.

[0031] When assembled, the tongue portion 20 projects through the aperture 37 of the end wall 30 and is movable between an extended position at which the portion 20 engages an adjacent object, and a retracted position at which the portion 20 is at least substantially retracted into the cover 27.

[0032] The spring 36 urges the tongue slide 18 to the extended position.

[0033] In operation of the above described lock assembly 10, with the cam projection 35 spaced by a maximum distance from the slide 18, the slide 18 can be manipulated by a user gripping and moving the tab 23. That is, the tab 23 is gripped and moved so that the portion 20 retracts back into the housing 29. When the tab 23 is released, the spring 36 moves the portion 20 to its maximum extended position.

[0034] With the use of a key, the projection 35 is moved angularly about the axis 36 to abut an end surface of the plate 12 to prevent movement thereof. By use of the key again, the projection 35 is moved angularly about the axis 36 so the projection 35 is spaced from the plate 12 thereby providing for movement of the tongue slide 18 to retract the tongue 20.

[0035] The above described lock 10 is assembled by firstly installing the spring 36 on the projection 14. The spring 36 is then compressed and the slide 18 placed on its position slidably engaging the plate 12.

[0036] Once the above is completed, the cover 27 is installed by sliding the portion 20 through the aperture 37 and moving the cover 27 so that the step 15 also projects through the aperture 37. In this position, the tongue 20 is now projecting through the aperture 37 in the end wall 30. Thereafter, the cover 27 is pivoted towards the plate 12 and a threaded fastener 37 installed so as to pass through the aperture 39 in the plate 12, to threadably engage with the cover 27. With the threaded fastener 37 tensioned the cover 37 is now fixed to the plate 12.

[0037] The slide 18 has a flange 40 that slides along the support 16, and that is engaged by the spring 36.

[0038] Preferably, the plate 12 is longitudinally elongated so as to have opposite end portions, with the projection 15 and aperture 37 located at the opposite end portion to the threaded fastener 37.

[0039] The above described preferred embodiment has the advantage that the lock 10 is retained in an assembled state by a single threaded fastener, with the step 15 captively located in the aperture. This reduces assembly time and the number of parts. The use of the sub-assembly of the plate 12, spring 36 and slide 18 reduces the assembly time.

Claims

CLAIMS:

1. A lock assembly including: a base to be fixed to a supporting structure; a tongue slide mounted on the base for linear movement relative thereto between an extended position to engage an adjacent object, and a retracted position; a spring urging the slide to the extended position; a cover attached to the base and enclosing the spring and at least a substantial portion of the slide so that when in the extended position the slide projects outwardly of the cover; means operable by a user to move the slide to the retracted position from the extended position; and wherein the base and cover have a cooperating projection and aperture into which the projection extends to aid in securing the cover to the base, with the lock assembly further including a fastener extending between the cover and base to retain the cover fixed to the base and with the projection captively located with respect to the aperture; and a lock barrel mounted in the cover for angular movement about an axis, the barrel having a projection that is moved angularly about said axis between a first position engaging slide to retain the slide in the extended position, and a further position spaced from the slide permitting movement of the slide.

2. The lock assembly of claim 1, wherein the spring extends between the base and slide.

3. The lock assembly of claim 1 or 2, wherein the base has the projection, and the cover the aperture.

4. The lock assembly of claim 1, 2 or 3, wherein the tongue slide projects through the aperture with the projection.

5. The lock assembly of any one of claims 1 to 4, wherein the base is longitudinally elongated, so as to have longitudinally opposite end portions, with the aperture and projection located adjacent one end portion, and the threaded fastener the other end portion.

6. The lock assembly of any one of claims I to 5, wherein the cover has a further aperture, and the slide a tab projecting through the further aperture that is gripped and manipulated by a user to move the slide to the retracted position.

7. The lock assembly of any one of claims 1 to 6, wherein the barrel is located adjacent the other end portion of the base.

8. The lock assembly of any one of claims I to 7, wherein the base has a spring engaging projection, and said slide has an aperture through which the spring engaging projection extends, with the spring extending between the spring engaging projection and said slide.

Azuma Design Pty Limited Patent Attorneys for the Applicant/Nominated Person SPRUSON&FERGUSON