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1、BRITISH STANDARD BS 5872:1980 Specification for Locks and latches for doors in buildings UDC 683.338.2:69.028.1 Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:18:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5872:1980 This British Standard, having been prepared under the direction of t
2、he Hardware and Ironmongery Standards Committee, was published under the authority of the Executive Board and comes into effect on 30 June 1980 BSI 02-1999 The following BSI references relate to the work on this standard; Committee reference HIB/9 Draft for comment 76/11351 DC ISBN 0 580 11304 3 Coo
3、perating organizations The Hardware and Ironmongery Standards Committee, under whose direction this British Standard was prepared, consists of representatives from the following Government department and scientific and industrial organizations: Aluminium Federation Aluminium Window Association Assoc
4、iation of Builders Hardware Manufacturers* British Hardware Federation* British Ironfounders Association British Lock Manufacturers Association* Department of the Environment (Building Research Establishment) Department of the Environment (Housing and Construction)* Greater London Council* Guild of
5、Architectural Ironmongers* Metropolitan Police Royal Institute of British Architects* Royal Institution of Chartered Surveyors Steel Window Association Zinc Development Association* The organizations marked with an asterisk in the above list, together with the following, were directly represented on
6、 the committee entrusted with the preparation of this British Standard: Association of Burglary Insurance Surveyors British Plastics Federation British Woodworking Federation Consumer Standards Advisory Committee of BSI Hardware Manufacturers Federation Incorporated Association of Architects and Sur
7、veyors Institute of Carpenters Amendments issued since publication Amd. No.Date of issueComments Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:18:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5872:1980 BSI 02-1999i Contents Page Cooperating organizationsInside front cover Forewordii 1
8、Scope1 2References1 3Definitions1 4Dimensions of locks and latches1 5Finishes1 6Test sample1 7Sequence of tests1 8Performance requirements1 9Marking2 Appendix A Test methods3 Figure 1 Cylinder rim night latch (general details)6 Figure 2 Cylinder rim night latch (cylinder, rose and backplate details)
9、7 Figure 3 Horizontal mortice lock8 Figure 4 Upright mortice lock and bathroom lock9 Figure 5 Striking plates for upright mortice locks and bathroom locks10 Figure 6 Mortice latch (flat case)11 Figure 7 Mortice latch (tubular case)12 Figure 8 Bored lock or latch set13 Figure 9 Apparatus for testing
10、freedom of operation of follower and spring bolt action in rim and mortice locks and latches14 Figure 10 Apparatus for testing freedom of operation of cap follower and spring bolt action in cylinder rim night latches14 Figure 11 Apparatus for testing strength of knob spindle, knob, spring bolt and s
11、topping medium in bored latch sets15 Figure 12 Apparatus for testing axial strength of knobs of bored lock and latch sets15 Figure 13 Apparatus for testing strength of connecting bar in rim cylinders16 Figure 14 Apparatus for testing strength of key16 Figure 15 Apparatus for testing spring bolt thro
12、ugh follower or knob17 Figure 16 Apparatus for testing spring bolt through striking plate or staple18 Figure 17 Apparatus for testing strength of lock or latch case, forend and bolt, staple and striking plate18 Table 1 Figures showing dimensions for locks and latches in category A1 Table 2 Strength
13、of bolt spring3 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:18:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5872:1980 ii BSI 02-1999 Foreword This British Standard has been prepared under the direction of the Hardware and Ironmongery Standa
14、rds Committee and is a revision and combination of two earlier British Standards, covering locks and latches primarily for wooden doors: BS 455:1957, Schedule of sizes for locks and latches for doors in buildings. BS 2088:1954, Performance tests for locks. This revision and combination of BS 455 and
15、 BS 2088,which are hereby withdrawn, includes a change to SI metric units. The standard now divides locks and latches into two categories of use, as follows: Dimensions are specified for locks and latches in category A only but all other requirements apply to both categories. The dimensions specifie
16、d will permit preparation of woodwork in advance and maximum interchangeability, both important considerations for housing schemes. It should be noted that clause 4 of this standard, which effectively replaces BS 455, omits some rim locks and rim latches for which demand is now infrequent, but does
17、include for the first time tubular mortice latches and bored lock and latch sets. However, test requirements for rim locks and latches are still included as these types may still be required for purposes other than housing. Since locks and latches are articles of which the main performance requireme
18、nt is a long efficient life under conditions of hard usage, the tests are designed to accelerate the conditions of use in order to produce in a short time the effects of normal wear over a long period. Using samples taken at random the wearing qualities of a stock of locks and latches may be determi
19、ned within a reasonable space of time. The tests are graded where necessary to take account of the extra durability required for use in category B. The materials to be chosen are not specified as the tests ensure that only those of suitable strength and durability can be used. The manufacture and fi
20、tting of locks and latches for fire resisting doors require special consideration. The design and the materials used are governed by the purpose and the type of door in question and such considerations lie outside the scope of this standard. Similarly, while it is not within the scope of this standa
21、rd to specify design features in detail, attention is drawn to the fact that locks and latches used in situations which render them prone to interference by vandals may also require special attention. Where conditions demand locks of higher performance and security, such as may be required by insura
22、nce surveyors, attention is drawn to BS 3621 “Specification for Thief resistant locks”. Certification. Attention is drawn to the certification facilities described on the inside back cover of this standard. A British Standard does not purport to include all the necessary provisions of a contract. Us
23、ers of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. category A,locks and latches for use in housing; category B,locks and latches for use in other buildings where a more robust construct
24、ion is necessary. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages 1 to 18, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment
25、 table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:18:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5872:1980 BSI 02-19991 1 Scope This British Standard specifies tests and levels of performance for locks and latches for doors used in buildings. For locks
26、and latches for doors used in housing it also specifies dimensions. Locks and latches for fire doors are not included. 2 References The titles of the publications referred to in this standard are listed on the inside back cover. 3 Definitions For the purposes of this British Standard the following d
27、efinitions, together with those given in BS 3827-1 and BS 3827-2, apply. 3.1 category A locks and latches locks and latches primarily intended for use in housing 3.2 category B locks and latches locks and latches primarily intended for use in public and other buildings, these being of more robust co
28、nstruction than those in category A 4 Dimensions of locks and latches 4.1 Locks and latches in category A. The dimensions and dimensional tolerances which affect fixing shall be as shown in the appropriate figure given in Table 1. Table 1 Figures showing dimensions for locks and latches in category
29、A Where no dimensions are specified they shall be at the discretion of the manufacturer, provided the lock or latch can be accommodated in the mortice illustrated. 4.2 Locks and latches in category B. The dimensions shall be at the discretion of the manufacturer. 5 Finishes Where any of the finishes
30、 specified in the following British Standards are used, they shall comply with the requirements and the conditions of service specified therein. BS 1224, Electroplated coatings of nickel and chromium. BS 1615, Anodic oxidation coatings on aluminium. BS 1706, Electroplated coatings of cadmium and zin
31、c on iron and steel. BS 3189, Phosphate treatment of iron and steel. 6 Test sample 6.1 Three locks or latches shall be taken from stock and shall be tested in accordance with Appendix A in the as received condition. No lubricant shall be added except as permitted in the tests specified in A.14 and A
32、.17. 6.2 If each lock or latch complies with all the appropriate requirements of clauses 7 and 8, the stock shall be deemed to comply with the test requirements of this British Standard. 6.3 If any lock or latch fails to comply with all the appropriate requirements of clauses 7 and 8, then a second
33、test sample of three locks or latches shall be taken from the same stock and shall be tested in accordance with Appendix A. If any lock or latch in the second sample fails to comply with all the appropriate requirements of clauses 7 and 8, then the stock shall be deemed not to comply with the test r
34、equirements of this British Standard. 7 Sequence of tests Each lock or latch in the test sample shall be prepared for testing as specified in A.1 and shall undergo all the tests appropriate to its type specified in Appendix A, in the same order in which they are listed. 8 Performance requirements 8.
35、1 Freedom of operation of follower, knob and spring bolt action. After testing by the methods described in A.2, A.3, A.4 and A.5, the bolt shall return to its normally extended position under its own spring pressure. 8.2 Strength of bolt spring. When depressed to its full extent by the method descri
36、bed in A.6, the bolt shall just support a force within the limits given in Table 2. TypeNumber of sizes Figure number Cylinder rim night latch4Figure 1 and Figure 2 Horizontal mortice lock2Figure 3 Upright mortice lock and bathroom lock 3Figure 4 Striking plates for upright mortice locks 1Figure 5 M
37、ortice latch (flat case)2Figure 6 Mortice latch (tubular case)2Figure 7 Bored lock and latch sets1Figure 8 NOTEThe figures are not intended to illustrate design details. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:18:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5872:1980 2 BSI 02-1
38、999 8.3 Strength of follower or cam, knob, spring bolt and stopping medium. After testing by the methods described in A.7, A.8 and A.9, no part of the lock or latch shall be damaged or distorted. 8.4 Axial force on knobs of bored lock or latch sets. After testing by the method described in A.10, no
39、part of the lock or latch shall be damaged or distorted. 8.5 Strength of security mechanism of bored lock or latch sets. After testing by the method described in A.11, the mechanism of the product shall not be damaged. 8.6 Strength of connecting bar in rim cylinders. After testing by the method desc
40、ribed in A.12, the connecting bar shall not have taken on a permanent set of more than 8, measured over the 38 mm distance specified. 8.7 Dead bolt against end pressure. When the mechanism is tested by the method described in A.13.1, turning the key to throw the bolt shall fully extend the bolt and
41、lock it. A reverse turn of the key shall unlock and withdraw the bolt. After testing by the method described in A.13.2, there shall be no damage to the mechanism, and the key shall continue to operate the mechanism correctly. 8.8 Operation of security mechanism. After testing by the methods describe
42、d in A.14.1, A.14.2 or A.14.3, the lock or latch shall still be operable by the key. In the case of deadbolt mechanisms, it shall not be possible to remove the key from the lock before the bolt is fully thrown and properly detained. Any failure of the key or the lock or latch shall be deemed to be a
43、 failure of the test. 8.9 Strength of keys. After testing by the methods described in A.15 a) or b), there shall be no permanent set to the key. 8.10 Spring bolt through follower or knob. After testing by the method described in A.16, the spring bolt action shall continue to function correctly. 8.11
44、 Spring bolt through striking plate or staple. After testing by the method described in A.17, the spring bolt shall continue to function correctly. 8.12 Locking snib action on cylinder rim night latches. After testing by the method described in A.18.1, there shall be no damage or distortion to any p
45、art of the bolt or snib mechanism. After testing by the method described in A.18.2, the snib mechanism shall continue to function correctly. 8.13 Strength of lock or latch case, forend and bolt. After testing by the method described in A.19, there shall be no damage or distortion to the lock or latc
46、h case, forend or bolt. 8.14 Strength of staple. After testing by the method described in A.20, there shall be no damage or distortion to the staple. 8.15 Strength of striking plate. After testing by the method described in A.21, there shall be no damage or distortion to the striking plate. 9 Markin
47、g Locks and latches shall be marked with the name, trade mark or other means of identification of the manufacturer. Licensed Copy: sheffieldun sheffieldun, na, Mon Dec 04 16:18:05 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 5872:1980 BSI 02-19993 Appendix A Test methods A.1 Fixing to test block. W
48、ith the exception of the tests given in A.2, A.3, A.4 and A.5, fix the sample locks, latches, striking plates or staples to test blocks of whitewood (European) according to the manufacturers instructions. The test blocks shall be not less than 35 mm thick for mortice locks, latches and striking plat
49、es in category A and for bored lock and latch sets, and not less than 40 mm thick for all other locks and latches. Where fixing is by wood screws they shall be as supplied or recommended by the manufacturer. The mortice for locks and latches in category A shall be as shown in Figure 3 to Figure 7. For locks and latches in category B the mortice shall give a clearance of not less than 1 mm above each face of the lock or latch case. A.2 Freedom of operation of follower and spring bolt action in rim and mortice locks and latches. With the