Garage door operation control apparatus

• US 4,344,252 A
• Filed: 03/28/1980
• Issued: 08/17/1982
• Est. Priority Date: 02/21/1979
• Status: Expired due to Term

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Nakamura, Kenji, Suzuki, Mitsuo, Tokunaga, Takeshi, Yonekura, Seiji, Matsuoka, Shigeru
• Primary Examiner(s): Downey, Kenneth
• Application Number:
  US06/134,867
• Time in Patent Office: 872 Days
• Field of Search: 49/26, 49/28, 49/199, 49/200, 49/139, 318/466, 318/467, 318/468, 318/265, 318/266
• US Class Current: 49/199
• CPC Class Codes: E05F 15/668 for overhead wings
• CPC Class Codes: E05Y 2400/324 Switches
• CPC Class Codes: E05Y 2400/326 of the angular type
• CPC Class Codes: E05Y 2400/354 End positions
• CPC Class Codes: E05Y 2900/106 for garages

Abstract

A garage door operation control apparatus comprises a disc rotatable in interlocked relation with a door driving system, which disc actuates an upper limit switch and a lower limit switch at the door upper and lower limit positions respectively. The interlocked relation of the driving system and the disc may be cancelled thereby to adjust the responsive position of the limit switches.

Claims

1. In a garage door operation control apparatus having a driving system including a motor for operating the door between open and closed positions, a door stop position control system comprising:

a switch operating member connected to said driving system through a transmission means so as to be moved in proportion to the amount of operation of said driving system, and a door stop switch operated at a predetermined door stop position in response to said switch operating member, said transmission means including means for releasing the interlocked relation between said driving system and said switch operating member, and said switch operating member being supported in such a manner as to be movable to a position actuating said door stop switch under the condition where the interlocked relation between said driving system and said switch operating member is released.

2. A garage door operation control apparatus according to claim 1, wherein said switch operating member is a rotary plate which, when released from the interlocked relation with said driving system, is connected with a spring for exerting a turning effort on said switch operating member thereby to rotate said switch operating member to a position actuating said door stop switch.

3. In a garage door operation control apparatus having a driving system including a motor for operating the door between open and closed positions, a door stop position control system comprising:

a switch operating member connected to said driving system through transmission means so as to be moved in proportion to the amount of operation of said driving system, a door stop switch actuated at a predetermined door stop position by said switch operating member, and a frame for housing said parts, wherein said transmission means includes means for releasing the interlocked relation between said driving system and said switch operating member, said control apparatus further comprising an adjust lever for releasing the interlocked relation between said switch operating member and said driving system, said adjust lever acting on said releasing means and said switch operating member thereby to move said switch operating member to a switch actuating position.

4. A garage door operation control apparatus according to claim 3, wherein said switch operating member is a rotary plate supported in such a manner as to be rotated by said adjust lever to said set position for actuating said door stop switch when the interlocked relation between said switch operating member and said driving system is released.

5. A garage door operation control apparatus according to claim 3, wherein said adjust lever is located outside of said frame.

6. In a garage door operation control apparatus having a driving system including a motor for operating the door between open and closed positions, a door stop position control system comprising:

a door stop switch electrically connected in circuit with said motor for stopping the operation of said motor upon actuation;

a switch operating member for actuating said door stop switch at a predetermined door stop position; and

transmission means for interconnecting said switch operating member to said driving system so that said switch operating member is moved in proportion to the movement of said door by said driving system, including means for releasing the interconnecting relationship between said driving system and said switch operating member and setting means responsive to operation of said releasing means for moving said switch operating member to a position actuating said door stop switch.

7. A garage door operation control apparatus according to claim 6, wherein said switch operating member is a rotary cam plate, and said setting means comprises a spring member connected to said cam plate and operable to rotate said cam plate to said switch actuating position when said cam plate is released from said driving system.

8. In a garage door operation control apparatus having a driving system including a motor for operating the door between open and closed positions, a door stop position control system comprising:

a door stop switch electrically connected in circuit with said motor for stopping the operation of said motor upon actuation;

a switch operating member for actuating said door stop switch at a predetermined door stop position; and

transmission means for interconnecting said switch operating member to said driving system so that said switch operating member is moved in proportion to the movement of said door by said driving system, including means for permitting selective movement of said switch operating member independently of said driving system to a position actuating said door stop switch to effect a position setting of said switch operating member.

9. A garage door operation control apparatus according to claim 8, wherein said transmission means includes a drive gear driven by said driving system for coordinate movement therewith, an input gear in engagement with said drive gear, and a clutch gear in driving engagement with said switch operating member and connected to said input gear by way of a clutch connection shaft for permitting movement of said switch operating member independently of said driving system.

10. A garage door operation control apparatus according to claim 8, wherein said transmission means includes a drive gear driven by said driving system for coordinate movement therewith, an input gear in engagement with said drive gear, a clutch gear supported on a common shaft with said input gear, an intermediate gear mounted for movement between a first position in engagement with both said clutch gear and said switch operating member and a second position in engagement only with said clutch gear, and bias means for biasing said intermediate gear toward said first position.