Hook Design for SNUZR: The World's First Toilet Stall HammockBlind

in Mechanical Engineering held by Dan Bolduc
Contest Ended, Winner(s) have been selected.
  • Open
  • Choosing Finalist
  • Ended
Looking for an engineer who can design a wall grappling hook that can suspend a hanging chair hammock between two partition walls in a toilet stall. The chair hammock has 4 straps which are attached to 4 identical wall hooks affixed at the top of the toilet stall partition. The hook must be able to hold securely in place as load weight is gradually applied. The typical user will install the hammock as follows: attach hooks on the side partition walls of the toilet stall - towards the front and back of stall and on both sides, attach hammock straps onto the hook, sits down on the hammock and if necessary get back up to adjust straps to ideal chair height and position. Previous designs of the hook did not stay in place and slid towards the centre of the wall due to side torque as weight was applied via the straps at roughly 45 degree angles (which also damaged or marked up the walls). We need a rockstar engineer who can solve this design challenge with a sense of humour.
a) Hook design must be the same for all 4 attachment points i.e. no left or right, back or front specific hooks

b) Hooks can withstand 100kg static load with side torque

c) Hooks must remain firmly in place with side torque as weight is applied at 45 degree angle

d) Hook must allow for partition wall width variance of between 10 - 15mm as toilet stall designs / materials vary

e) Hook must not scratch the wall i.e. use of rubber or similar material

f) Hook mechanism must be easy / quick to install and snap into place (like a vice grip) to give assurance that hook is secure and will not move as weight is applied

g) Design must be as light and compact as possible to ensure portability and reduce shipping costs

h) Design must be as unobtrusive as possible so that hook is not too noticeable in adjacent toilet stall or outside of stall

i) Design is relatively cheap to manufacture with low volume; note that we tried 3D printing with previous designs but needed special resin due to weight (regular plastics broke under stress)
Don't Wants:
Simplicity is best - no complicated designs

Try and leverage existing product designs (per attached photos)


= Buyer's Rating
1st Winner
#54 hammock hook concept by RBLdesign
Jul 20, 2018 22:24
#32 suction cup by Mech_Eng
Jun 22, 2018 2:12
#33 simple support by Mech_Eng
Jun 22, 2018 2:15
#35 Hook v4 by Milan Borovic
Jul 13, 2018 16:25
#42 hammock hook by Shakir Istiak
Jul 16, 2018 12:39
#43 hammock hook by Shakir Istiak
Jul 16, 2018 12:46
#52 Lever clamp v2.5 by Serge Krjukov
Jul 19, 2018 12:04
#58 Funny Hook by Eira
Jul 21, 2018 3:34
#16 screw lock by MS22 Design
Jun 5, 2018 11:26
#2 concept1 by DesignAssist
May 23, 2018 12:02
#3 Hook v1 by Milan Borovic
May 23, 2018 17:23
#4 Hook v2 by Milan Borovic
May 23, 2018 19:26
#6 Concept1_improved by DesignAssist
May 24, 2018 7:55
#7 Concept 2 by DesignAssist
May 24, 2018 7:55
#8 Hammock Hook Concept01 by Coman
May 24, 2018 15:33
#11 Hook v3 by Milan Borovic
Jun 3, 2018 18:40
#13 Hook Design for SNUZR: The World's First Toilet Stall Hammock by sherifelsheikh
Jun 3, 2018 22:25
#14 For Project: Hook Design for SNUZR: The World's First Toilet Stall Hammock by Percie
Jun 4, 2018 15:06
#15 For Project: Hook Design for SNUZR: The World's First Toilet Stall Hammock by Percie
Jun 4, 2018 17:40
#17 Pressure Hanger Concept by Kbrown821
Jun 5, 2018 13:30
#21 SNUZR HOOK by ARJ0019
Jun 14, 2018 0:26




Fri, 13 Jul 2018 12:48:55 +0000
Intresting contest.i'll submit ly desigb asap

Dan Bolduc


Fri, 13 Jul 2018 08:05:06 +0000
Hello Designers,

Thank you to everyone who submitted a design. Whilst some of the designs were interesting and have potential, none are suitable for my requirements. Therefore we've re-opened the contest for one more week and will be increasing the prize money by $200. I will also private message the designers who came up with the most interesting designs to provide more explicit feedback of what improvements could be made to their designs.

Fri, 08 Jun 2018 20:26:18 +0000
Would a sheet metal design be acceptable? Also, is 'snap into place' in requirement (f) a hard requirement if the design leverages the user's weight in securing it?



Thu, 24 May 2018 05:11:41 +0000
Hello, do you have any pictures of parts of the wall where the hook will be attached. Thank you.



Wed, 23 May 2018 20:27:13 +0000
I think the toilet stall you are talking about are based on standard of 18mm thick wall with Marine-Ply core faced with high pressure laminate in wet areas. Silver anodized aluminum edge trim to perimeter of all panels. Extruded aluminum alloy 6060 with exposed face anodic coated.
And not advisable to carry a 100kg load, but I recommend a rectangular adjustable horizontal bracing support connected to 4 hooks to be able the balance of a static or a dynamic load.

Milan Borovic


Wed, 23 May 2018 12:55:13 +0000
Hi, do you have a picture of your hammock attached on the walls of toilet stall.
I need to see your product and how is attached to the wall so I can think of the solution.

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