EP0151672B1 - Lock for refrigerator or the like which can be unlocked from inside thereof - Google Patents

Lock for refrigerator or the like which can be unlocked from inside thereof Download PDF

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Publication number
EP0151672B1
EP0151672B1 EP84106300A EP84106300A EP0151672B1 EP 0151672 B1 EP0151672 B1 EP 0151672B1 EP 84106300 A EP84106300 A EP 84106300A EP 84106300 A EP84106300 A EP 84106300A EP 0151672 B1 EP0151672 B1 EP 0151672B1
Authority
EP
European Patent Office
Prior art keywords
fixed seat
movable body
lock
inner end
keeper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84106300A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0151672A2 (en
EP0151672A3 (en
Inventor
Takasaki Kunihiko
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Takigen Manufacturing Co Ltd
Original Assignee
Takigen Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Takigen Manufacturing Co Ltd filed Critical Takigen Manufacturing Co Ltd
Publication of EP0151672A2 publication Critical patent/EP0151672A2/en
Publication of EP0151672A3 publication Critical patent/EP0151672A3/en
Application granted granted Critical
Publication of EP0151672B1 publication Critical patent/EP0151672B1/en
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B13/00—Devices preventing the key or the handle or both from being used
    • E05B13/10—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B63/00—Locks or fastenings with special structural characteristics
    • E05B63/24—Arrangements in which the fastening members which engage one another are mounted respectively on the wing and the frame and are both movable, e.g. for release by moving either of them
    • E05B63/244—Arrangements in which the fastening members which engage one another are mounted respectively on the wing and the frame and are both movable, e.g. for release by moving either of them the striker being movable for latching, the bolt for unlatching, or vice versa
    • E05B63/246—Emergency release from inside by releasing the striker
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/02—Striking-plates; Keepers; Bolt staples; Escutcheons
    • E05B15/0205—Striking-plates, keepers, staples
    • E05B15/024—Striking-plates, keepers, staples adjustable
    • E05B15/0245—Movable elements held by friction, cooperating teeth, or the like
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/0042—For refrigerators or cold rooms
    • E05B65/0053—For refrigerators or cold rooms with safety release from inside

Definitions

  • the present invention relates to a lock which locks the door of a walk-in type large-sized refrigerator, freezing chamber or the like to the body thereof, and more particularly, to a lock which can be unlocked from the inside of the above-mentioned refrigerator or the like.
  • a keeper is constituted by a fixed seat secured to a frame wall of the refrigerator body and a keeper body pivotally attached to the fixed seat and wherein the keeper body is rotated through an operation of a push rod performed from the inside of the refrigerator, thereby to undo the engagement between a latch member of a handle unit mounted on the door and a keeper member mounted on the keeper body.
  • This lock has a limitation on improvement in structual fastness properties, since the fixed seat and the keeper body are connected through a strip-like coupling member which is easily distorted or deformed when a large stress acts thereon.
  • a primary object of the invention to provide a lock for a refrigerator or the like in which the structure for coupling the fixed seat and the movable body of the keeper is secure, and the fixed seat and the movable body can be easily re-assembled by a single operation.
  • a lock for a refrigerator or the like which can be unlocked from the inside thereof, the lock comprising; a handle unit mounted on a door; and a keeper mounted on a body frame wall of the refrigerator or the like, the keeper being constituted by: a fixed seat secured to the body frame wall and provided in its center with a guide hole for a push rod provided inside the refrigerator or the like; and a movable body having at its distal end a keeper member with which a latch member of the handle unit comes in and out of engagement and having its outer proximal end pivotally attached to the outer end of the fixed seat, the keeper further having: an actuating lever having its outer end pivotally attached to the outer end of the fixed seat; a lock shaft slidably and rotatably received by a bearing hole provided at the inner end of the fixed seat, the lock shaft being urged by a spring so as to be slidable inwardly; and a follower pin upstanding on an intermediate portion of the lock
  • a lock in accordance with the invention comprises a handle unit 2 and a keeper 4.
  • the handle unit 2 is secured to the front surface of a door 1 by suitable fastening means, such as bolts or screws.
  • a fixed seat 10 constituting part of the keeper 4 is secured to the front surface of a refrigerator body frame wall 3 by suitable fastening means, such as bolts or screws.
  • a movable body 7 constituting part of the keeper 4 has a height regulating plate 55 secured thereto by means of two screws 56.
  • a roller-type keeper member 6 is mounted at the distal end of the height regulating plate 55.
  • a latch member 5 provided on the handle unit 2 is adapted to engage the keeper member 6 when a handle 45 is laid in parallel to the front surface of the door 1, thereby to lock the door 1 to the refrigerator body frame wall 3 so that the door 1 cannot be opened.
  • a pair of upper and lower bearing bosses 17, 18 are provided at the end of the fixed seat 10 on the side opposite to the door 1 with respect to a guide hole 9 for a push rod 8, i.e., the outer end of the fixed seat 10.
  • the movable body 7 has through holes 21, 22 formed in the outer proximal ends of upper and lower side walls 19, 20 thereof, respectively.
  • the movable body 7 is pivotally attached to the fixed seat 10 by means of a pivot rod 25 received by these through holes 21, 22 and through holes 23, 24 formed in the bearing boses 17, 18, respectively.
  • the fixed seat 10 is provided on its front and reverse sides with short cylindrical portions 52 and 53, respectively, surrounding the guide hole 9.
  • a support plate 26 of a U-shaped cross-section has a semicircular notch 47 provided on its inner end side.
  • the support plate 26 is made to abut on the front surface of the fixed seat 10 while allowing the notch 47 to engage the short cylindrical portion 52 and is secured to the fixed seat 10 by means of a screw screwed from a through hole 50 in the fixed seat 10 into a screw-receiving tubular portion 48 formed in the center of the support plate 26.
  • the short cylindrical portion 53 on the reverse side is fitted into a through hole 44 formed in the refrigerator body frame wall 3 when the fixed seat 10 is secured to the refrigerator body frame wall 3.
  • Through holes 29, 30 are provided in the outer ends of a pair of upright side walls 27, 28 of the support plate 26, respectively.
  • through holes 31, 32 are provided in projections at the outer end of an actuating lever 11, respectively.
  • the actuating lever 11 is pivotally attached to the support plate 26, that is, the outer end of the fixed seat 10 by means of a pivot pin 54 received by the through holes 29, 30, 31 and 32.
  • a coiled spring 49 fitted on the pivot pin 54 abuts on the support plate 6, while the other end of the spring 49 abuts on the actuating lever 11.
  • the actuating lever 11 is rotatably urged toward the front surface of the fixed seat 10 and therefore abuts on the short cylindrical portion 52.
  • the rotatable urging effected by the coiled spring 49 ensures the returning motion of the actuating lever 11 when the press on a push rod 8 provided inside the refrigerator is suspended.
  • Two, upper and lower, lock shafts 14 are employed to further intensify the coupled strength between the fixed seat 10 and the movable body 7.
  • Each lock shaft 14 is provided in its intermediate portion with a screw hole 51 formed in the radial direction thereof.
  • a follower pin 15 is screwed into each screw hole 51.
  • a bearing hole 12 formed in the inner end 10a of the fixed seat 10 is a through hole extending through the inner end 10a, while a bearing hole 13 provided at the inner proximal end 7a of the movable body 7 is a blind hole which is formed only in the outer end surface 43 of the inner proximal end 7a.
  • the bearing hole 13 is formed so as not to reach the inner end surface of the inner proximal end 7a, the inner end of the lock shaft 14 cannot be pressed from the inner end side to push the lock shaft 14 out from the bearing hole 13. For this reason, the coupled state between the fixed seat 10 and the movable body 7 by means of the lock shafts 14 is firmly maintained; therefore, it is possible to obtain an excellent reliability in locking.
  • An upright wall 37 formed between the bearing bosses 17, 18 of the fixed seat 10, is provided in its upper and lower ends thereof with guide holes 38, 39 for rotatably and slidably receiving the small- diameter outer ends of the lock shafts 14, respectively.
  • a compression coiled spring 41 is loaded between the upright wall 37 and an intermediate step surface 40 of the lock shaft 14 so that each lock shaft 14 is slidably urged by means of the spring 41 toward the fixed seat inner end 10a, i.e., toward the door .1.
  • the follower pin 15 provided at the lock shaft intermediate portion abuts on the inclined cam surface 16 of the fixed seat inner end 10a by the proximal end peripheral surface thereof. Since the inclined cam surface 16 is formed into a spiral with a central angle of 90 degrees, however, the follower pin 15 is slid along the inclined cam surface 16 by the slidable urging effected by the spring 41. As a result, when the follower pin 15 reaches its stable position shown in Figs. 11 and 13, the lock shaft 14 has rotated 90 degrees from its retracting position shown in Fig. 12.
  • the distal end portion of the actuating lever 11 is formed in an inverted U shape in cross-section and has wings 33, 34 projecting to the upper and lower sides, respectively.
  • the actuating lever 11 rotates about the pivot pin 54 to push the follower pins 15 through the wings 33, 34.
  • each lock shaft 14 outwardly slides along the bearing hole 12 while rotating 90 degrees in the reverse direction against the spring 41.
  • the inner end of each lock shaft 14 escapes from the bearing hole 13 in the movable body 7, thereby allowing the movable body 7 to be released from the restraint with respect to the fixed seat 10.
  • the inner end and the wings 33, 34 of the actuating lever 11 are formed into a tapered shape as viewed from the front; therefore, the follower pins 15 can be smoothly and reliably driven by the actuating lever 11.
  • the projections 35, 36, on which the wings 33, 34 can abut are provided at the inner distal ends of the upright walls 27, 28 of the support plate 26, the actuating lever 11 is prevented from any excessive rotation, so that the wings 33, 34 will never come off from the respective follower pins 15, 15.
  • the outer end surface 43 of the inner proximal end 7a of the movable body 7 and the inner end surface 42 of the inner end 10a of the fixed seat 10 are formed into an inclined surface which is tangent to a circular arc centered at the pivot rod 25 at the outer end of the movable body 7, and moreover, the inner end of each lock shaft 14 is formed into a hemispheric shape. Therefore, when the movable body 7 and the fixed seat 10 are re-assembled, after the unlocking operation from the inside of the refrigerator, by reversely rotating the movable body 7 about the pivot rod 25, the lock shafts 14 are smoothly pushed in, without any obstacle, by the outer end surface 43 of the inner proximal end 7a of the movable body 7.
  • the bearing holes 12 and 13 communicate with each other. In consequence, the lock shafts 14 slide inwardly while reversely rotating, and the inner ends enter the respective bearing holes 13 formed in the movable body 7.
  • Each follower pin 15 abutting on the inclined cam surface 16 also serves as a stopper which regulates the amount of projection of the lock shaft 14 from the inner end surface 42 of the fixed seat inner end 10a.
  • a support plate 126 which is secured by means of a screw 146 from the front side of the fixed seat 10, has notches 129, 130 provided in the outer ends of upright side walls 127, 128, respectively.
  • These notches 129, 130 are loosely fitted with projecting members 131, 132 provided on the outer end of an actuating lever 111, respectively, so that when the actuating lever 111 is pushed with the push rod 6, similarly to the above-mentioned actuating lever 11, the actuating lever 111 rotates about the notches 129, 130.
  • Both wings 133, 134 of the actuating lever 111 are formed so as to be parallel to projections 135, 136 at the inner ends of the upright walls 127, 128, respectively.
  • bearing holes 113 provided at the inner proximal end 7a of the movable body 7 are formed as through holes similar to the bearing holes 13 at the fixed seat inner end 10a to meet the convenience of fabrication. For the prevention of any push-back operation of the lock shafts 14 from the inside of the movable body 7, it is only necessary to close the inner openings of the bearing holes 113 with a metal plate or the like.
  • the lock in accordance with the invention employs the lock shafts 14 as means for coupling the movable body 7 of the keeper 4 to the fixed seat 10 so that the movable body 7 cannot rotate, and each lock shaft 14 is received by the bearing holes 12, 13 provided at the inner end 10a of the fixed seat 10 and the inner proximal end 7a of the movable body 7, respectively. Therefore, the coupled structure between the fixed seat 10 and the movable body 7 of the keeper 4 is constructed too be much more secure than the conventional strip member, so that durability is improved.
  • the re-assembly of the fixed seat 10 and the movable body 7 of the keeper 4 can be completed merely by such a single operation as the pivoting of the movable body 7. Accordingly, the lock in accordance with the invention is easy to operate, advantageously.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Refrigerator Housings (AREA)
  • Lock And Its Accessories (AREA)
EP84106300A 1984-02-10 1984-06-01 Lock for refrigerator or the like which can be unlocked from inside thereof Expired EP0151672B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP16717/84 1984-02-10
JP1984016717U JPS60129460U (ja) 1984-02-10 1984-02-10 庫内側解錠可能な冷蔵庫等の仮錠装置

Publications (3)

Publication Number Publication Date
EP0151672A2 EP0151672A2 (en) 1985-08-21
EP0151672A3 EP0151672A3 (en) 1986-06-04
EP0151672B1 true EP0151672B1 (en) 1988-08-17

Family

ID=11924015

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84106300A Expired EP0151672B1 (en) 1984-02-10 1984-06-01 Lock for refrigerator or the like which can be unlocked from inside thereof

Country Status (4)

Country Link
EP (1) EP0151672B1 (enrdf_load_stackoverflow)
JP (1) JPS60129460U (enrdf_load_stackoverflow)
KR (1) KR890004060Y1 (enrdf_load_stackoverflow)
DE (1) DE3473488D1 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101575921B (zh) * 2008-05-07 2011-07-20 温州市通用锁具有限公司 报警锁
CN101949629A (zh) * 2010-08-16 2011-01-19 海尔集团公司 冰箱及其锁紧装置
KR101422810B1 (ko) * 2013-05-16 2014-07-24 주식회사 공진 냉장 및 냉동고용 캣쳐 해제장치
JP7211728B2 (ja) * 2018-07-24 2023-01-24 Ykk Ap株式会社 ラッチ受け及び建具
EP4215744B1 (en) * 2022-01-20 2025-07-23 Siemens Gamesa Renewable Energy Innovation & Technology S.L. Door arrangement for a wind turbine, door locking device and wind turbine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3936086A (en) * 1974-06-07 1976-02-03 Kason Hardware Corporation Inside safety release latch device

Also Published As

Publication number Publication date
KR890004060Y1 (ko) 1989-06-17
JPH0240211Y2 (enrdf_load_stackoverflow) 1990-10-26
EP0151672A2 (en) 1985-08-21
EP0151672A3 (en) 1986-06-04
KR850009596U (ko) 1985-12-05
JPS60129460U (ja) 1985-08-30
DE3473488D1 (en) 1988-09-22

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