# US 2021/0340803 A1 · Shock-absorbing braking device for sliding panels and doors

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- Number: US 2021/0340803 A1
- Document ID: US20210340803A1
- Status: Published application
- Kind: A1
- Application number: 17/270,642
- Filed: 2019-08-02
- Published: 2021-11-04
- Earliest claimed: 2018-09-06
- Assignees: Terno Scorrevoli S.P.A. Unipersonale
- Applicants: Terno Scorrevoli S.P.A. Unipersonale
- Inventors: Giovanni TERNO
- Web page: https://patentgrep.com/patent/US20210340803A1

## CPC

- E05F 5/003: {for sliding wings (Fasteners specially adapted for holding sliding wings open E05D13/04)}
- E05F 1/16: for sliding wings
- E05Y 2201/64: Carriers
- E05Y 2201/708: Sliders
- E05Y 2800/205: forming a unit
- E05Y 2800/24: of springs and brakes
- E05Y 2800/242: arranged in parallel relationship
- E05Y 2900/132: Doors
- E05Y 2900/20: for furniture, e.g. cabinets
- E05F: DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF

## Abstract

A shock-absorbing braking device (10) for sliding doors (88) or for wardrobe panels is combined with a carriage (12) provided with rollers (14) sliding in an extruded profile (16), with a bottom base provided with a longitudinally extending slot (18) from which a pin or bolt (20) protrudes suitable to connect said carriage (12) to the sliding door or panel (88). The device comprises a containment shell (24), formed of opposite and complementary elements (28), in which at least one helical spring (26) and a shock-absorbing piston (30) acting in conjunction with a shaped cam (56) are placed, provided with an appendage forming a traction hook (62) suitable to abut with an activator (78) extending in said extruded profile (16). The shaped cam (56) is provided on opposite sides with a pin (64), destined to slide along a mixtilinear cavity (66, 66) extending longitudinally along the inner face of each of the elements (28) forming the containment shell (24).

## Claims

### Claim 1

A shock-absorbing braking device (10) for sliding doors (88) or for wardrobe panels, provided with a carriage (12) with wheels (14) sliding in an extruded profile (16) with the lower base provided with a slot (18) extending longitudinally from which a pin or bolt (20) projects which connects said carriage (12) to said sliding door or wardrobe panel (88), characterized in that it comprises a containment shell (24), formed of opposite and complementary elements (28), in which at least one helical spring (26) and a shock-absorbing piston (30) are placed, acting in conjunction with a shaped cam (56) with an appendage forming a traction hook (62) suitable to abut an activator (78) extending in said extruded profile (16), said shaped cam (56) being provided on opposite sides with a pin (64) designed to slide along a mixtilinear cavity (66, 66′) extending longitudinally along the inner face of each of said elements (28) forming the containment shell (24), further comprising a slider (34) provided at the front with an integral appendage (54) substantially cylindrical and extending horizontally for the connection of said slider to the shaped cam (56) at a seat (58) with a substantially semi-circular profile formed along said cam, one of the ends of the helical springs (26) and of the piston (30) being connected to the slider (34).

### Claim 2 (depends on 1)

The shock-absorbing device according to claim 1, characterized in that the exposed end of the rod (30′) of the piston (30) is engaged in a hole made along the rear wall of the slider (34), provided laterally with a slot (46) through which an elastic ring (48) is inserted.

### Claim 3 (depends on 1)

The shock-absorbing device according to claim 1, characterized in that the slider (34) is provided with opposite upper (36) and lower (38) protrusions on which as many grooves (40) are formed in which the extension hooks (42) made at the front end of each of the springs (26) are engaged, the opposite rear end of said springs being provided with an appendage (44) forming a depression (44′) in which opposite protrusions (28′) projecting inside the elements (28) forming the containment shell (24) are arranged.

### Claim 4 (depends on 1)

The shock-absorbing device according to claim 1, characterized in that said mixtilinear cavities (66) extend mainly horizontally along opposite and complementary elements (28) bending downwards substantially at 90° in the foremost part in the proximity of the front head (24′) of the containment shell (24), which defines the joining element between said shell and the carriage (12) by means of screws (68).

### Claim 5 (depends on 1)

The shock-absorbing device according to claim 1, characterized in that the activator (78) comprises an arm (80), one end of which is connected to an underlying support base (82) the lower front of which comprises two closely spaced holes (84) and (86), respectively suitable to receive a first positioning screw or grub screw (84′) of said activator in the extruded profile (16) and a second screw (86′) that pushes said activator to adhere to said extruded profile, on the same arm (80) a protrusion (90) being made designed to abut with the traction head or hook (62) of the cam (56).

### Claim 6 (depends on 4)

The shock-absorbing device according to claim 4, characterized in that the containment shell (24) is inserted in a reinforcement profile (72) having a “U” cross-section, provided with a plurality of opposite teeth (74) protruding inwardly from the vertical walls of said profile and engaging in as many horizontal notches (70) made on the elements (28) of the containment shell (24), two opposite wheels (76) being coupled by means of pegs (76′) to said reinforcement profile (72).

### Claim 7 (depends on 1)

The shock-absorbing device according to claim 1, characterized in that on the inner front of each of the complementary elements (28) forming the shell (24) a semi-seat (32) is made for receiving and stabilizing the piston (30), said elements (28) being connected by rivets (60) or equivalent means.

### Claim 8 (depends on 1)

The shock-absorbing device according to claim 1, characterized in that on each spring (26) and on the piston (30) a tube (50) and a ring (52) in insulating material are respectively fitted.