# US 10,501,106 B2 · Folding mechanism and stroller thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,501,106 B2 - Document ID: US10501106B2 - Status: Granted - Kind: B2 - Application number: 15/978,203 - Filed: 2018-05-14 - Published: 2018-11-15 - Granted: 2019-12-10 - Earliest claimed: 2017-05-15 - Assignees: Wonderland Switzerland AG - Applicants: Wonderland Switzerland AG - Inventors: Jialiang Yuan - Web page: https://patentgrep.com/patent/US10501106B2 ## CPC - B62B 7/062: {Coupling unit between front wheels, rear wheels and handle} - B62B 7/066: {the handle bar moves in parallel relation during folding} - B62B 7/08: in the direction of, or at right angles to, the wheel axis - B62B 7/083: {the wheel axes being moved from each other during folding} - B62B 9/24: Safety guards for children, e.g. harness (cat nets B62B9/14; devices for use in guiding or supporting children, e.g. safety harness A47D13/08) - B62B 7/064: {the handle bar being parallel to the front leg} - B62B 2202/023: Beverage holders, e.g. for a cup, tin or bottle - B62B 2205/003: with actuation mechanisms which drive the folding or unfolding operation - B62B 2205/20: Catches; Locking or releasing an articulation - B62B: HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES (characterised by animal propulsion B62C; propulsion of sledges by driver or engine B62M) ## Abstract A folding mechanism for a stroller including a cover, a front leg connector pivoted to the cover, a rear leg connector pivoted to the front leg connector, and a front guard member pivoted to the front leg connector is disclosed. A pair of connection arms extends from the front guard member. The folding mechanism includes a rotatable member pivoted to the cover and detachably connected to the connection arm. An abutting portion protrudes from the rotatable member. When the rear leg connector is unfolding, the rear leg connector abuts against the abutting portion and drives the front guard member rotating relative to the cover to an unfolded position. When the rear leg connector is folding, the rear leg connector is detached from the abutting portion to release the front guard member to a folded position. ## Claims ### Claim 1 A folding mechanism for a stroller, the stroller comprising a cover, a front leg connector, a rear leg connector, and a front guard member, the front leg connector being pivoted to the cover, the rear leg connector being pivoted to the front leg connector and collapsible relative to the front leg connector, the front guard member being pivoted to the front leg connector, a pair of connection arms extending from the front guard member, the folding mechanism comprising: a rotatable member pivoted to the cover and detachably connected to the connection arm, an abutting portion protruding from the rotatable member; wherein when the rear leg connector is unfolding, the rear leg connector abuts against the abutting portion and drives the front guard member rotating relative to the cover to an unfolded position; when the rear leg connector is folding, the rear leg connector is detached from the abutting portion to release the front guard member to a folded position. ### Claim 2 (depends on 1) The folding mechanism of claim 1, wherein the front guard member is a tray. ### Claim 3 (depends on 2) The folding mechanism of claim 2 further comprising: a tray fixing member pivoted to the cover and detachably connected to the connection arm. ### Claim 4 (depends on 2) The folding mechanism of claim 2 further comprising: a tray fixing member detachably connected to the rotatable member. ### Claim 5 (depends on 4) The folding mechanism of claim 4, wherein the rotatable member and the tray fixing member are detachably connected by a convex structure and a corresponding concave structure formed on the rotatable member and the tray fixing member respectively. ### Claim 6 (depends on 1) The folding mechanism of claim 1, wherein the rear leg connector has a bending portion bending toward the rotatable member, the bending portion abuts against the abutting portion when the rear leg connector is unfolding relative to the front leg connector, and the bending portion is detached from the abutting portion when the rear leg connector is folding relative to the front leg connector. ### Claim 7 (depends on 6) The folding mechanism of claim 6, wherein the abutting portion is a protruding arm. ### Claim 8 (depends on 7) The folding mechanism of claim 7, wherein the abutting portion has an arc-shaped surface, the bending portion abuts against the arc-shaped surface when the rear leg connector is unfolding relative to the front leg connector, and the bending portion is detached from the arc-shaped surface when the rear leg connector is folding relative to the front leg connector. ### Claim 9 (depends on 8) The folding mechanism of claim 8, wherein a blocking surface extends tangentially from a free end portion of the arc-shaped surface for blocking the bending portion. ### Claim 10 (depends on 1) The folding mechanism of claim 1 further comprising: a limiting portion protruding from the rotatable member; and a protruding block formed on the cover; wherein the protruding block stops the limiting portion to prevent rotation of the front guard member at the unfolded position. ### Claim 11 (depends on 1) The folding mechanism of claim 1, wherein the folding mechanism further comprises a bending support sheet and the bending support sheet is fixedly connected to the cover at one end and pivoted to the rotatable member at another end. ### Claim 12 (depends on 11) The folding mechanism of claim 11, wherein the bending support sheet comprises a fixing portion and a support portion, the support portion bends from the fixing portion toward the rotatable member, the fixing portion is fixedly connected to the cover, and the support portion is pivoted to the rotatable member. ### Claim 13 (depends on 12) The folding mechanism of claim 12, wherein a sector slot is formed on the rotatable member, the support portion is disposed in the sector slot, the support portion abuts against a first inner wall of the sector slot when the front guard member is in the unfolded position, and the support portion abuts against a second inner wall of the sector slot when the front guard member is in the folded position. ### Claim 14 (depends on 1) The folding mechanism of claim 1, wherein the folding mechanism further comprises a handle connector and a limiting block, the handle connector is pivoted to the cover, the limiting block is fixedly disposed on the handle connector, a limiting portion protrudes from the rotatable member, and the limiting block abuts against a top surface of the limiting portion for preventing rotation of the front guard member in the unfolded position. ### Claim 15 (depends on 1) The folding mechanism of claim 1, wherein the folding mechanism further comprises a rib protruding from the cover corresponding to the abutting portion of the rotatable member, and the rib abuts against the abutting portion for constraining movement of the abutting portion when the rear leg connector is unfolding. ### Claim 16 (depends on 1) The folding mechanism of claim 1, wherein the folding mechanism further comprises a resilient finger formed on the abutting portion, the resilient finger comprises a protruding point protruding toward the cover, a positioning slot formed on the cover corresponding to the resilient finger, and the protruding point is engaged with the positioning slot for positioning the rotatable member when the front guard member is in the folded position.