EP0080856A2 - Showerhead - Google Patents
Showerhead Download PDFInfo
- Publication number
- EP0080856A2 EP0080856A2 EP82306247A EP82306247A EP0080856A2 EP 0080856 A2 EP0080856 A2 EP 0080856A2 EP 82306247 A EP82306247 A EP 82306247A EP 82306247 A EP82306247 A EP 82306247A EP 0080856 A2 EP0080856 A2 EP 0080856A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- lugs
- cam surfaces
- component
- component part
- annular portion
- 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
Links
- 239000007921 spray Substances 0.000 claims abstract description 26
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 10
- 230000000717 retained effect Effects 0.000 claims description 6
- 239000012858 resilient material Substances 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 3
- 229920003023 plastic Polymers 0.000 abstract description 4
- 239000004033 plastic Substances 0.000 abstract description 4
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000014759 maintenance of location Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241000239290 Araneae Species 0.000 description 1
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 1
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
- B05B1/18—Roses; Shower heads
Definitions
- the present invention relates to a method for releasably assembling together component parts of a device and is especially concerned with a method for releasably assembling the component parts of a spray unit being one element of a shower bath shower head.
- a locking means such as a screw or a nut and bolt assembly.
- a plurality of concentric spray rings located within a shower bath shower head are normally arranged to be retained in the head by means of a centrally located screw passing through a hole in the centre spray ring and being received within a threaded hole formed in an appropriately positioned lug attached to the said head, the spray rings being tapered in such a manner that the retention of the centre ring prevents adjacent rings from being removed from the unit.
- the cam surfaces include recessed portions in which the lugs engage when the said parts are in the Locking position to prevent one of the said component parts being inadvertantly rotated with respect to the other in the opposite direction thereby allowing the said component parts to be separated. It is further preferred that at least one of the lugs or cam surfaces be formed of a resilient material, such as a plastics material, to provide a "snap fit" engagement of the lugs in the said recesses.
- the lugs extend radially outwardly from a cylindrical portion extending from one component part and the cam surfaces and recesses are formed in one face of an annulus located within the said other component part and through which the cylindrical component and associated lugs may pass.
- cam surfaces and recesses may be located within the annulus.
- cam surfaces may be arranged around the outer surface of a projection extending from one component and the lugs extend inwardly of a hollow element extending from the other component and adapted to receive said_projection and extending lugs therein.
- cam surfaces and lugs should be such that the surfaces of the two components, that are required to be maintained'in contact with each other when the components are in the locked position, are in such position when the lugs engage in the recesses.
- At least three lugs and three co-operating cam surfaces and recesses are provided on the respective components.
- a spray unit in which all components are composed of a resilient plastics material such as acetal, and located within the head may comprise an outer annulus, adapted to be received within the said head and having a tapered inside wall portion to receive an inner spray ring, within which is contained a central annular member located in position by means of a plurality of arms extending radially inwardly from the said outer annulus.
- Cam surfaces may be.
- a plurality of concentric annular tapered spray rings are located within the outer annulus and are retained in position by a central portion having a tapered outer periphery to engage with the corresponding tapered wall of the innermost spray ring.
- Extending inwardly of the spray unit from the said central portion is a cylindrical projection having formed thereon radially extending lugs dimensioned to pass through the slots formed in the central annulus to engage the cam surfaces.
- Rotation of the said central portion causes the lugs to move along the cam surfaces thereby drawing the central portion and the concentric spray rings and outer annulus into closer engagement.
- the lugs "snap" into the recesses formed in the cam surfaces to lock the rings within the outer annulus.
- the material from which the components are formed is resilient, rotation of the central portion in the opposite direction cause the lug to "snap" out of the recesses and to be removable through the slots in the central annulus thereby releasing all of the shower rings.
- a hand set comprises a body portion 1, one end of which terminates in an essentially cylindrical portion (not shown) threaded for attachment to a supply of water.
- the other end includes substantially flat side walls 2 and upper 3 and end 4 portions which are open to receive a spray head.
- a cylindrical opening 5 is formed in the lower surface 6 through which the cylindrical spray unit located on spray head 10 may pass.
- Spray head 10 includes a cylindrical end portion 11 which is capable of being received within the body 1 of the hand set and includes an annular slot 12 in which is located an 0-ring (not shown) to provide a water tight seal within body 1 of the hand set.
- the opposite end of the shower head comprises front and top portions 14 and 13 to close the open upper and end portions 3 and 4 in the hand set, the upper wall of the hand set being received within recess 15 formed in the top portion 13 of the shower head.
- the lower portion of the shower head includes a downwardly extending cylindrical member 16 dimensioned to be a sliding fit within the cylindrical opening 5 of the hand set thereby retaining the head in position on the hand set.
- Cylindrical portion 5 is adapted to receive a spray unit, indicated generally at 20 (figure 3).
- the spray unit comprises an outer ring 30 (shown in greater detail in figures 4 and 5), inner spray rings 21 and 22 and a central locking portion 40 (shown in greater detail in figures 6 and 7).
- Outer ring 30 includes wall 31 having shoulder 32 and dimensioned to be a sliding fit within cylindrical member 16, shoulder 32 engaging against the lower face 17 of said member. Ring 30 is retained in position by gluing to member 16.
- the lower inner portion 33 of wall 31 is tapered to receive the complimentary tapered outer wall of ring 21.
- a central annular member 34 is located concentrically of ring 30 by spider arms 35 projecting radially from the inner wall of ring 30.
- Three cam surfaces 36 having a recessed portion 37 are formed in the inner wall of member 34, the cam surfaces being inclined upwardly towards recess 37.
- a stop member 38 is provided at the edge of recess 37 remote from the cam surface.
- Three axial slots 39 are provided to communicate with the lower end of cam surface 36.
- the outer tapered walls of rings 21 and 22 are grooved to provide spray holes 50 and 51 between ring 21 and the smooth inner tapered wall 33 of ring 30 and between ring 22 and the smooth inner tapered wall of ring 21 respectively.
- Central locking portion 40 is formed with a frusto conical lower portion 41 in the outer wall of which are cut grooves 42 to provide spray-holes 52 between said wall and the smooth inner wall of ring 22.
- Slot 43 is formed in the base of portion 41.
- a cylindrical portion 44 of smaller diameter than frusto-conical portion 41 projects upwards therefrom and includes three lugs 45 projecting radially in the same plane and at angles of 120°. The diameter of portion 44 and the length of lugs 45 are such that they are a sliding fit within annular member 34 and slots 39 respectively.
- lugs 45 can be caused to "snap" out of the recess 36 by rotation of locking member 40 in the opposite direction using a screw driver engaged in slot 43, thereby enabling the locking member to be withdrawn and rings 21 and 22 to be removed.
Landscapes
- Nozzles (AREA)
Abstract
Description
- The present invention relates to a method for releasably assembling together component parts of a device and is especially concerned with a method for releasably assembling the component parts of a spray unit being one element of a shower bath shower head.
- In general when two component parts of a device are required to be releasably assembled and retained in their assembled position by means of a single retaining means, the one part is held to or within the other by a locking means such as a screw or a nut and bolt assembly. Thus a plurality of concentric spray rings located within a shower bath shower head are normally arranged to be retained in the head by means of a centrally located screw passing through a hole in the centre spray ring and being received within a threaded hole formed in an appropriately positioned lug attached to the said head, the spray rings being tapered in such a manner that the retention of the centre ring prevents adjacent rings from being removed from the unit.
- We have now developed a method and apparatus for retaining one component part of a device in association with another component part which does not require the use of any additional locking means. Retention is achieved by forming on one component part at least two lug portions extending therefrom and in or on the other component an equivalent number of cam surfaces with which the lugs can engage and can be moved into a locking engagement by rotation of one part with respect to the other.
- Preferably the cam surfaces include recessed portions in which the lugs engage when the said parts are in the Locking position to prevent one of the said component parts being inadvertantly rotated with respect to the other in the opposite direction thereby allowing the said component parts to be separated. It is further preferred that at least one of the lugs or cam surfaces be formed of a resilient material, such as a plastics material, to provide a "snap fit" engagement of the lugs in the said recesses.
- In one form of the invention the lugs extend radially outwardly from a cylindrical portion extending from one component part and the cam surfaces and recesses are formed in one face of an annulus located within the said other component part and through which the cylindrical component and associated lugs may pass.
- In another form the cam surfaces and recesses may be located within the annulus.
- In yet another form the cam surfaces may be arranged around the outer surface of a projection extending from one component and the lugs extend inwardly of a hollow element extending from the other component and adapted to receive said_projection and extending lugs therein.
- Clearly the dimensions and positioning of the cam surfaces and lugs should be such that the surfaces of the two components, that are required to be maintained'in contact with each other when the components are in the locked position, are in such position when the lugs engage in the recesses.
- Preferably at least three lugs and three co-operating cam surfaces and recesses are provided on the respective components.
- The invention may conveniently be applied to retaining releasable spray rings of a shower unit within the shower head. Thus a spray unit, in which all components are composed of a resilient plastics material such as acetal, and located within the head may comprise an outer annulus, adapted to be received within the said head and having a tapered inside wall portion to receive an inner spray ring, within which is contained a central annular member located in position by means of a plurality of arms extending radially inwardly from the said outer annulus. Cam surfaces may be. formed in the inside walls of the central annular member, the said surfaces being directed downwardly with respect to one face of the outer annulus and including a portion parallel to the upper surface of the annulus containing a shallow recess extending towards said one face; axially extending slots opening into said one face communicating with the uppermost portion of each said cam face are formed in the inside walls of the annulus. A plurality of concentric annular tapered spray rings,adapted to fit one within the other, are located within the outer annulus and are retained in position by a central portion having a tapered outer periphery to engage with the corresponding tapered wall of the innermost spray ring. Extending inwardly of the spray unit from the said central portion is a cylindrical projection having formed thereon radially extending lugs dimensioned to pass through the slots formed in the central annulus to engage the cam surfaces. Rotation of the said central portion causes the lugs to move along the cam surfaces thereby drawing the central portion and the concentric spray rings and outer annulus into closer engagement. At the end of their travel along the cam surfaces the lugs "snap" into the recesses formed in the cam surfaces to lock the rings within the outer annulus. Because the material from which the components are formed is resilient, rotation of the central portion in the opposite direction cause the lug to "snap" out of the recesses and to be removable through the slots in the central annulus thereby releasing all of the shower rings.
- One device including an embodiment of the present invention will now be described with reference to the accompanying drawings in which:
- Figure 1 is a diagrammatic representation of a portion of a hand set forming part of a shower bath assembly,
- Figure 2 is a diagrammatic representation of a shower head assembly for location in the hand set of figure 1,
- Figure 3 is a diagrammatic representation in cross section of a fragment of a spray unit for use with the shower head of figure 2,
- Figure 4 is a plan view of the outer annulus forming part of the assembly of figure 3 taken along arrow B,
- Figure 5 is a cross sectional representation taken across A-A of figure 4,
- Figure 6 is a cross sectional representation of the centre cylindrical portion of the assembly of figure 3 and,
- Figure 7 is a representation of a plan view along arrow C in figure 6.
- Referring to the drawings, a hand set comprises a body portion 1, one end of which terminates in an essentially cylindrical portion (not shown) threaded for attachment to a supply of water. The other end includes substantially flat side walls 2 and upper 3 and end 4 portions which are open to receive a spray head. A cylindrical opening 5 is formed in the lower surface 6 through which the cylindrical spray unit located on
spray head 10 may pass. -
Spray head 10 includes acylindrical end portion 11 which is capable of being received within the body 1 of the hand set and includes anannular slot 12 in which is located an 0-ring (not shown) to provide a water tight seal within body 1 of the hand set. The opposite end of the shower head comprises front andtop portions recess 15 formed in thetop portion 13 of the shower head. The lower portion of the shower head includes a downwardly extendingcylindrical member 16 dimensioned to be a sliding fit within the cylindrical opening 5 of the hand set thereby retaining the head in position on the hand set. Cylindrical portion 5 is adapted to receive a spray unit, indicated generally at 20 (figure 3). The spray unit comprises an outer ring 30 (shown in greater detail in figures 4 and 5),inner spray rings -
Outer ring 30 includeswall 31 havingshoulder 32 and dimensioned to be a sliding fit withincylindrical member 16,shoulder 32 engaging against the lower face 17 of said member. Ring 30 is retained in position by gluing tomember 16. The lowerinner portion 33 ofwall 31 is tapered to receive the complimentary tapered outer wall ofring 21. A centralannular member 34 is located concentrically ofring 30 byspider arms 35 projecting radially from the inner wall ofring 30. Threecam surfaces 36 having arecessed portion 37 are formed in the inner wall ofmember 34, the cam surfaces being inclined upwardly towardsrecess 37. Astop member 38 is provided at the edge ofrecess 37 remote from the cam surface. Threeaxial slots 39 are provided to communicate with the lower end ofcam surface 36. - The outer tapered walls of
rings spray holes ring 21 and the smooth innertapered wall 33 ofring 30 and betweenring 22 and the smooth inner tapered wall ofring 21 respectively. -
Central locking portion 40 is formed with a frusto conicallower portion 41 in the outer wall of which are cutgrooves 42 to provide spray-holes 52 between said wall and the smooth inner wall ofring 22.Slot 43 is formed in the base ofportion 41. Acylindrical portion 44 of smaller diameter than frusto-conical portion 41 projects upwards therefrom and includes threelugs 45 projecting radially in the same plane and at angles of 120°. The diameter ofportion 44 and the length oflugs 45 are such that they are a sliding fit withinannular member 34 andslots 39 respectively. - To assemble the
spray head rings outer ring 30 which is held in the inverted position.Central locking portion 40 is then introduced into theinner ring 22 the cylindrical portion passing into the centralannular member 34 ofouter ring 30,lugs 45 travelling alongslots 39 to engage thecam surfaces 36 formed in the walls ofmember 34. Rotation oflocking member 40 by means of a screwdriver engaging slot 43 causeslugs 45 to travel along thecam surface 36 until they "snap" intorecesses 37, in which position therings outer ring 30. Over-rotation ofmember 40 is prevented by the presence ofstop member 38. In- advertant rotation of thelocking member 40 in the opposite direction is prevented sincelugs 45 are located inrecess 37. - Since the
locking member 40 andannular members 34 are formed from a resilient plastics material,lugs 45 can be caused to "snap" out of therecess 36 by rotation oflocking member 40 in the opposite direction using a screw driver engaged inslot 43, thereby enabling the locking member to be withdrawn and rings 21 and 22 to be removed.
Claims (11)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8135849 | 1981-11-27 | ||
GB08135849A GB2110289B (en) | 1981-11-27 | 1981-11-27 | Fastening for shower heads |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0080856A2 true EP0080856A2 (en) | 1983-06-08 |
EP0080856A3 EP0080856A3 (en) | 1984-07-04 |
EP0080856B1 EP0080856B1 (en) | 1988-03-09 |
Family
ID=10526213
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82306247A Expired EP0080856B1 (en) | 1981-11-27 | 1982-11-24 | Showerhead |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0080856B1 (en) |
DE (1) | DE3278218D1 (en) |
GB (1) | GB2110289B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0155775A1 (en) * | 1984-02-25 | 1985-09-25 | Triton plc | Spray head |
GB2330784A (en) * | 1997-10-17 | 1999-05-05 | Ernest Joscelyn Clerk | Fire nozzle |
US8936207B2 (en) | 2009-09-16 | 2015-01-20 | Pentair Flow Technologies, Llc | Bayonet system for spray nozzles |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9301369D0 (en) * | 1993-01-25 | 1993-03-17 | Lurmark Ltd | Bayonet fitting for spray nozzle holder |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1890156A (en) * | 1929-07-24 | 1932-12-06 | Konig Wenzel | Shower rose |
US3811157A (en) * | 1972-10-26 | 1974-05-21 | Dzus Fastener Co | Tamper-proof fastener |
US3997116A (en) * | 1975-10-28 | 1976-12-14 | Stanadyne, Inc. | Adjustable shower head |
US4067090A (en) * | 1976-01-07 | 1978-01-10 | Dzus Fastener Co., Inc. | Fastener |
-
1981
- 1981-11-27 GB GB08135849A patent/GB2110289B/en not_active Expired
-
1982
- 1982-11-24 EP EP82306247A patent/EP0080856B1/en not_active Expired
- 1982-11-24 DE DE8282306247T patent/DE3278218D1/en not_active Expired
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1890156A (en) * | 1929-07-24 | 1932-12-06 | Konig Wenzel | Shower rose |
US3811157A (en) * | 1972-10-26 | 1974-05-21 | Dzus Fastener Co | Tamper-proof fastener |
US3997116A (en) * | 1975-10-28 | 1976-12-14 | Stanadyne, Inc. | Adjustable shower head |
US4067090A (en) * | 1976-01-07 | 1978-01-10 | Dzus Fastener Co., Inc. | Fastener |
Non-Patent Citations (1)
Title |
---|
Handbook of Fastening and Joining of Metal Parts, pp. 448 and 489 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0155775A1 (en) * | 1984-02-25 | 1985-09-25 | Triton plc | Spray head |
GB2330784A (en) * | 1997-10-17 | 1999-05-05 | Ernest Joscelyn Clerk | Fire nozzle |
US8936207B2 (en) | 2009-09-16 | 2015-01-20 | Pentair Flow Technologies, Llc | Bayonet system for spray nozzles |
Also Published As
Publication number | Publication date |
---|---|
DE3278218D1 (en) | 1988-04-14 |
EP0080856B1 (en) | 1988-03-09 |
EP0080856A3 (en) | 1984-07-04 |
GB2110289B (en) | 1985-04-24 |
GB2110289A (en) | 1983-06-15 |
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Legal Events
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17P | Request for examination filed |
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17Q | First examination report despatched |
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Owner name: TRITON PLC |
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