Door locking handle assembly with built-in combination lock

• US 6,550,296 B2
• Filed: 04/15/2002
• Issued: 04/22/2003
• Est. Priority Date: 06/08/2001
• Status: Expired due to Term

• Current Assignee: Takigen Manufacturing Company Limited
• Original Assignee: Takigen Manufacturing Company Limited
• Inventors: Segawa, Shirou
• Primary Examiner(s): BARRETT, SUZANNE LALE DINO
• Application Number:
  US10/122,495
• Publication Number:
  US 20020189304A1
• Time in Patent Office: 372 Days
• Field of Search: 702/08, 702/10, 702/13, 702/15--17, 702/84, 702/85
• US Class Current: 70/208
• CPC Class Codes: E05B 1/0092 Moving otherwise than only rectilinearly or only rotatively E05B5/003 takes precedence
• CPC Class Codes: E05B 13/10 formed by a lock arranged in the handle
• CPC Class Codes: E05B 13/103 Combination lock
• CPC Class Codes: E05B 37/02 with tumbler discs or rings arranged on a single axis, each disc being adjustable independently of the others
• CPC Class Codes: Y10T 70/5761 Retractable or flush handle
• CPC Class Codes: Y10T 70/5783 Combination lock
• CPC Class Codes: Y10T 70/7141 Combination and key

Abstract

Although a door locking handle assembly is small as a whole in thickness, it permits through a computerized personal management system of users a plurality of persons or users to have easily access to instruments contained in a box which is provided with the door locking handle assembly. In this assembly, a combination lock (19), which is opened by turning each of a set of its specially marked dial discs (21) a given number of times to establish a unique combination of marks of the dial discs (21), is incorporated in a door handle (13) or a base body (1) of the assembly. In operation, a locking member (44) of the assembly prevents the door handle (13) from being pulled out of the base body (1), and is driven to reach its unlocked position when the combination lock (19) is opened.

Claims

1. In a door locking handle assembly with a built-in combination lock (19), the assembly being provided with a base body (1) which is fixedly mounted on a door (2), wherein a door handle (13) is pivoted to said base body (1) so as to be capable of being pulled out forward and pushed back rearward relative to said base body (1) and also turning sideward on a locking shaft (10) after completion of a pulling-out operation, wherein a rack (12) serving as a door bolt for said door (2) is directly or indirectly connected with said door handle (13) so as to be engaged with and disengaged from a receiving portion of a stationary frame element such as a main body of a box when said door handle (13) is pulled out forward and then turned sideward on said locking shaft (10) after completion of the pulling-out operation of said door handle (13), said rack (12) being slidably supported and guided in up and down linear motion relative to said door (2), the improvement wherein:

said combination lock (19), which is provided with a plurality of marked dial discs (22), is incorporated in said door handle (13) and opened by turning each of said marked dial discs (22) a given number of times to establish a predetermined combination of marks provided in outer peripheral surfaces of said dial discs (22);

a locking member (24) for preventing said door handle (13) from being pulled out of said base body (1) is juxtaposed with an inner surface of said door handle (13) to pass through a central portion of each of said plurality of said marked dial discs (22) of said combination lock (19);

a rotor (44) of a cylinder lock (43) is embedded in a lock sleeve (46) in a manner such that said rotor (44) is not capable of rotating relative to said lock sleeve (46), said cylinder lock (43) being embedded in said base body (1);

said lock sleeve (46) is provided with a locking projection (48) in an cuter peripheral surface to make said locking projection (48) engageable with a lower-end latch member (35) connected with a lower end portion of said locking member (24);

both said marked dial discs (22) and said locking member (24) are resiliently pressed under a spring member (27), which permits said lower-end latch member (35) to be engaged with and disengaged from said locking projection (48) of said lock sleeve (46) when said rotor (44) of said cylinder lock (43) is turned to a locked and unlocked position by means of a key, respectively, said key being inserted into a keyhole of said rotor (44); and

formed in said locking projection (48) of said lock sleeve (46) is a rear cam slope (50) for driving said locking member (24) upward against a resilient force exerted by said spring member (27) when said door handle (13) is pulled out of said base body (1) after said combination lock (19) is unlocked.

2. The door locking handle assembly of claim 1, wherein said door handle (13) is connected to said rack (12) by a pinion shaft (11) and pinion gear, whereby a sideward turning of said door handle (13) and said locking shaft (10) can move said rack (12) upward and downward relative to said door (2).

3. The door locking handle assembly of claim 1, wherein said combination lock (19) includes said plurality of said marked dial discs (22) in an alternating relationship with an equal number of adjacent cam discs (23), said dial discs (22) and said cam discs (23) being rotatably mounted on said elongated locking member (24).

4. The door locking handle assembly of claim 3, wherein said dial discs (22) are each interlocked to each adjacent said cam disc (23) by a plurality of positioning projections (26a) which are inserted axially into a mating positioning groove (31).

5. The door locking handle assembly of claim 3, wherein each said dial disc (22) has a plurality of detent grooves (32) provided equally spaced apart on the dial disc outer periphery, each said dial disc (22) being held in a predetermined angular position by a detent leaf spring (33) fixedly mounted in said handle (13).

6. The door locking handle assembly of claim 1, wherein said rotor (44) is non-rotatably mounted on said lock sleeve (46) by a rear end portion (45) of the rotor being inserted into the lock sleeve (46).

7. In a door locking handle assembly with a built-in combination lock (19), the assembly being provided with a base body (1) which is fixedly mounted on a door (2), wherein a door handle (13) is pivoted to said base body (1) so as to be capable of being pulled out forward and pushed back rearward relative to said base body (1) and also turning sideward on a locking shaft (10) after completion of a pulling-out operation, wherein a rack (12) serving as a door bolt for said door (2) is directly or indirectly connected with said door handle (13) so as to be engaged with and disengaged from a receiving portion of a stationary frame element such as a main body of a box when said door handle (13) is pulled out forward and then turned sideward on said locking shaft (10) after completion of the pulling-out operation of said door handle (13), said rack (12) being slidably supported and guided in up and down linear motion relative to said door (2), the improvement wherein:

said combination lock (19), which is provided with a plurality of marked dial discs (22), is incorporated in said door handle (13) and opened by turning each of said marked dial discs (22) a given number of times to establish a predetermined combination of marks provided in outer peripheral surfaces of said dial discs (22);

each said marked dial discs (22) being held in a desired angular position by detent leaf spring (33) fixedly mounted in said door handle (13);

a locking member (24) for preventing said door handle (13) from being pulled out of said base body (1) is juxtaposed with an inner surface of said door handle (13) to pass through a central portion of each of said plurality of said marked dial discs (22) and an equal number of cam discs (23) provided each located adjacent to the dial discs (22) of said combination lock (19);

a rotor (44) of a cylinder lock (43) is embedded in a lock sleeve (46) in a manner such that said rotor (44) is not capable of rotating relative to said lock sleeve (46), said cylinder lock (43) being embedded in said base body (1);

said lock sleeve (46) is provided with a locking projection (48) in an outer peripheral surface to make said locking projection (48) engageable with a lower-end latch member (35) connected with a lower end portion of said locking member (24);

both said marked dial discs (22) and said locking member (24) are resiliently pressed under a spring member (27), which permits said lower-end latch member (35) to be engaged with and disengaged from said locking projection (48) of said lock sleeve (46) when said rotor (44) of said cylinder lock (43) is turned to a locked and unlocked position by means of a key, respectively, said key being inserted into a keyhole of said rotor (44); and

formed in said locking projection (48) of said lock sleeve (46) is a rear cam slope (50) for driving said locking member (24) upward against a resilient force exerted by said spring member (27) when said door handle (13) is pulled out of said base body (1) after said combination lock (19) is unlocked.