Sofa Bed Mechanisms — Pull Out & Click Clack Sofa Beds
The mechanism determines how a sofa bed opens, what forms the sleeping surface and how much clearance it needs around the room. Our sofa beds use two main systems: pull out, where the bed extends forwards from inside or beneath the seat, and click clack, where the backrest folds flat to become part of the bed.
This page compares how the two mechanisms work so you can choose the opening system first and then compare the individual sofa beds available within that route.
How a Pull Out Sofa Bed Opens
A pull out sofa bed keeps its sleeping section inside the sofa or beneath the main seating area. The bed is brought forwards when required, but the precise construction varies between models.
Some pull out designs conceal a folded mattress and internal frame within the body of the sofa. The structure is drawn forwards and unfolded to create a separate sleeping surface.
Other pull out sofa beds store an upholstered platform beneath the seat. This section slides forwards and joins the existing seating area to form the bed, without revealing a separate mattress.
Both versions extend mainly in front of the sofa, so the fully opened depth and the operating space required should be checked before choosing.
See our Pull Out Sofa Beds →
How a Click Clack Sofa Bed Opens
A click clack sofa bed does not contain a separate bed frame or mattress hidden inside. Instead, the backrest is hinged and folds down until it sits level with the seat.
The seat and folded backrest then form the sleeping surface. Depending on the design, the mechanism may also lock in intermediate upright or reclined positions before reaching its fully flat setting.
Click clack sofa beds are often relatively straightforward to convert, although the exact operating action and effort required vary between models.
The backrest normally needs clearance behind the sofa as it folds, while the completed bed also occupies additional floor space once open.
See our Click Clack Sofa Beds →
Pull Out or Click Clack: Which Sofa Bed Mechanism Suits You?
The right mechanism depends on the sleeping surface you prefer, the room layout and how frequently the bed is likely to be used.
Choose a pull out sofa bed when you prefer a separate hidden mattress or an extending upholstered platform and have enough clear floor space in front of the sofa.
Choose a click clack sofa bed when you prefer a fold-flat design with no separate bed frame stored inside and have enough clearance for the backrest to move.
Neither mechanism is automatically better. A hidden-mattress pull out, a platform pull out and a click clack sofa bed can provide very different sleeping surfaces, even when they belong to the same broad mechanism category.
Individual dimensions, cushioning and construction should therefore take priority over the mechanism name alone.
Comparing Pull Out and Click Clack Sofa Bed Mechanisms
The table below summarises the main differences between the two routes. Individual product specifications should always take priority.
| Feature | Pull Out Sofa Beds | Click Clack Sofa Beds |
|---|---|---|
| How the bed opens | A mattress, frame or upholstered platform extends forwards from inside or beneath the sofa | The backrest folds down until it sits level with the seat |
| Sleeping surface | A separate mattress or an upholstered platform joined to the seating area | The sofa seat and folded backrest form the bed |
| Main clearance required | Clear floor space in front of the sofa | Clearance behind the backrest and enough room for the completed bed |
| Conversion action | The sleeping section is pulled, lifted or unfolded forwards | The backrest is released and folded into its flat position |
| Cushion removal | May be required, particularly on hidden-mattress designs | Usually not required because the seat and backrest form the bed |
| Closed appearance | Often resembles a conventional sofa with the sleeping section concealed | Often has a slimmer or more streamlined construction |
| Most important checks | Mattress or platform construction, open depth and operating action | Rear clearance, locking positions and the join between seat and backrest |
The mechanism should not be considered in isolation. Also compare the closed seating position, fully opened measurements, sleeping dimensions and the construction of the surface on which the guest will sleep.
Measuring for Pull Out and Click Clack Sofa Beds
Measure every sofa bed in both its closed and fully converted positions. Marking both footprints on the floor with masking tape can show whether the opened bed will block a doorway, walkway, radiator, cupboard or nearby furniture.
A pull out sofa bed usually needs most of its additional clearance directly in front. Check the position of coffee tables and other furniture, and leave enough room to stand in front of the sofa while operating the mechanism.
A click clack sofa bed normally needs space behind the backrest as it folds. A model placed tightly against a wall may need to be moved forwards before it can convert.
Do not rely only on labels such as single or double. Compare the confirmed sleeping width and length because sofa bed sizes do not always correspond exactly with standard mattress dimensions.
Customers who want to compare both actions in person can view selected sofa bed mechanisms at Foy's Interiors in Enniskillen.
Sofa Bed Mechanism FAQs
Which Sofa Bed Mechanism Is Easiest to Use?
Click clack sofa beds are often relatively quick to convert because the backrest folds directly into the sleeping position. Pull out sofa beds require a mattress, frame or platform to be drawn forwards. The actual effort needed varies between models, so the individual mechanism should be checked before choosing.
Which Sofa Bed Mechanism Creates the Most Bed-Like Surface?
A pull out sofa bed with a separate hidden mattress provides a sleeping surface that is independent from the everyday sofa cushions. Platform pull outs and click clack sofa beds use more of the upholstered sofa structure. Comfort and support still depend on the individual construction rather than the mechanism name alone.
What Is a Clic Clac Sofa Bed?
Clic clac, clic-clac, click clack and click-clack are spelling variants for the same general folding-back mechanism. The backrest releases and folds flat to form the bed. Fold flat may also describe this action, while convertible sofa bed is a broader term that can cover several different mechanisms.
Does a Click Clack Sofa Bed Need Space Behind It?
Usually, yes. The backrest normally moves backwards as it folds into the sleeping position, so clearance may be required between the sofa and the wall. The completed bed also occupies additional floor space, so always use the fully opened dimensions when planning the room.
Does a Pull Out Sofa Bed Need Space in Front?
Yes. A pull out sofa bed extends a mattress, frame or upholstered platform forwards from the sofa. The required clearance depends on the fully opened depth, and additional working space may be needed to operate the mechanism comfortably.