US3397320A - Terminal block mounting means for plug-in type photoelectric cell - Google Patents
Terminal block mounting means for plug-in type photoelectric cell Download PDFInfo
- Publication number
- US3397320A US3397320A US499618A US49961865A US3397320A US 3397320 A US3397320 A US 3397320A US 499618 A US499618 A US 499618A US 49961865 A US49961865 A US 49961865A US 3397320 A US3397320 A US 3397320A
- Authority
- US
- United States
- Prior art keywords
- terminal block
- socket
- flange
- photoelectric cell
- cam
- 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 - Lifetime
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R33/00—Coupling devices specially adapted for supporting apparatus and having one part acting as a holder providing support and electrical connection via a counterpart which is structurally associated with the apparatus, e.g. lamp holders; Separate parts thereof
- H01R33/72—Three-pole devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
Definitions
- Modern control for lighting arrangements, and especially street lighting system include a photoelectric control unit which is sensitive to natural light conditions prevailing externally of the street light controlled by the unit.
- photocell units are of known type and have been used to a wide degree to automatically regulate the operation of a specific lighting system. When the intensity of natural light diminishes to a predetermined point, the photoelectric cell is operative to turn on or turn off the street light or a series of such lights.
- the terminal block or socket mounting of the photoelectric cell should also be appropriately designed and oriented so that photocell may be merely plugged into the terminal block and locked into position by known types of co-operating male and female connector blades. It is also desirable to protect the connector blades from the weather as such exposure has a tendency to corrode them, causing poor conductance. It is also desirable to have a mounting means for such terminal block which permits expedient installation into a socket receiving member, and subsequent orientation of the terminal block immediately prior to final tightening of the fasteners mounting the same.
- the present invention includes a terminal block having a body portion with a radially extending flange at one end. Suitable cam surfaces are formed on the opposite end of the terminal block and co-operate with axially movable cam follower members to cause a spreading of the cam follower members in response to tightening of fasteners which extend through the radially extending flange. As the fasteners are rotated, the cam followers engage the co-operating carn surfaces to extend a socket engaging portion on the cam followers and grip a shoulder in a socket mounting bore.
- FIG. 1 is a perspective view of the terminal block and photocell control unit with the two in assembled relation;
- FIG. 2 is a cross sectional view of the terminal block of FIG. 1 with the photoelectric cell control unit partially in section and the mounting fasteners in a loose condition;
- FIG. 3 is a plan view taken along the lines 3-3 of FIG. 2;
- FIG. 4 is an elevational view partly in section of the terminal block being installed in a stepped bore in a socket
- FIG. 5 is a partially sectioned view of the terminal block assembled into the socket portions with the photoelectric cell unit in the process of being inserted into the mounted terminal block.
- reference character 10 indicates a photoelectric control unit of the type described briefly above including a terminal block 11 and photocell unit 12.
- the terminal block 11 includes a body portion 13 having a transverse end surface 14 at one end and a laterally projecting flange 15 at the opposite end defining a lower end surface 16 formed with slot-like openings 17-19 to receive male conductors of known form mounted on the photosensitive control unit 12.
- the body portion 13 of the terminal block 11 may be formed from two parts 20 and 21 joined together by an eyelet or rivet 22 extending through co-operating bores 23 and 24 in each of the parts.
- the slot-like opening .19 merges with an enlarged bore 25 having a combination blade and lead female connector 26 positioned therein.
- This construction is of known form and may be of the type described in my corresponding application, Ser. No. 205,455, filed June 26, 1962, which is now US. Patent No. 3,237,148, issued Feb. 22, 1966, the disclosure of which is incorporated by reference.
- the lead portion of the female connector 26 is mounted in a bore 27 formed in the upper body portion 20 of the terminal block 11 and an electrical wire 28 is conductingly attached while the free end (not shown) is adapted to receive a quick-type connector for operative installation in the socket unit of known form.
- the photocell unit 12 illustrated has three male connector blades which are received in the slot-like openings 1719 with the larger blade 30 shown in the cross sectional view of FIG. 2.
- the male connector blades are of conventional design being generally flagor inverted L-shaped for insertion and rotational locking with the female connector 26-.
- the photoelectric cell 12 can only be installed in one position.
- An angular flange 31 on the cell 12 embraces the outer margin of the radial flange 15 and serves to position a gasket member 32 for operative engagement with the end surface 16 to seal against the weather.
- the upper end of the flange 31 is adapted for close positioning relative to the socket member when the terminal block is installed.
- Two radially directed groove portions 33 and 34 are formed in the upper end 14 and the bottom wall surfaces 35 and 36 disposed angularly relative to the central axis of the terminal block to form cam surfaces extending from the transverse end surface 14 outwardly to the circumferential surface of the body portion 20.
- a pair of cam follower members 37 and 38 have angularly disposed cam follower portions 39 and 40 engageable with the cam surfaces 35 and 36.
- Each cam follower member 37 and 38 is apertured and internally threaded to receive threaded fasteners 41 and 42.
- the outer margin of the cam follower members 37 and 38 are adapted to engage a radially directed shoulder 46 formed in the bore of a socket 43 shown at cross section in FIG. 5.
- Socket 43 is provided with a first bore 44 coaxially arranged with a second bore 45 of increased diameter with the bores joined by the radially directed shoulder 46.
- Each of the fasteners 41 and 42 extends through the flange 15 in longitudinal alignment with the camming surfaces 35 and 36 formed in the body 13 of the terminal block 11.
- the terminal block 11 is prepared for installation by loosening the fasteners 41 and 42 and cam followers 37 and 38 to the condition shown in FIG. 2.
- the terminal block 11 may then be inserted into the first bore 44 to project partially into the second bore 45 as shown in FIG. 4, where the cam follower members 37 and 38 are positioned well above the radial shoulder 46 joining the two bores.
- Fasteners 41 and 42 are then rotated by means of a tool such as a standard screwdriver, drawing the cam follower members 37 and 38 against cam surfaces 35 and 36 formed in the terminal block. After the cam followers 37 and 38 engage the cam surfaces 35 and 36 and tightening of the fasteners 41 and 42 is continued, the cam followers move radially outward to the position shown in FIG.
- the terminal block may be rotated to orient the arrow shown on the end surface 16 in FIG. 3 to the proper position, which as shown is to be pointed north.
- the photoelectric unit 12 may then be installed by positioning the blade members in the slot-like openings 17-19 and rotating it angularly to lock it in place, causing the gasket 32 to be compressed. Since the terminal block 11 has been properly oriented, the photocell will also be properly oriented since it may be installed in only one position.
- the upper end of the flange 31 is disposed closely adjacent the underside of the socket to form a barrier which assists the gasket 32 in excluding the weather, which could cause corrosion and failure of the electrical connections.
- the novel manner of mounting the terminal block of the present invention permits it to be blindly installed and precisely oriented to the proper location for ultimate positioning of a plug-in type photocell unit with unequaled case. While two cam surfaces have been illustrated, it is obvious that a greater or lesser number may be provided, depending upon the particular size of the terminal block and corresponding socket member.
- the present design provides an easy method of blind installation for electrical receptacles and especially those designs which must be oriented relative to compass directions.
- a terminal block particularly adapted for blind insertion into a mounting socket, said terminal block comprising a body portion having a transverse surface at one end and a laterally projecting flange at an opposite end, a plurality of terminal openings at said opposite end adapted to receive connectors projecting from a photoelectric cell unit, a pair of cam surfaces formed on opposite sides of said body, a pair of elongated fasteners extending through said laterally projecting flange in substantial longitudinal alignment with each of said cam surfaces, a cam follower member disposed over each of said cam surfaces, thread means formed in each of said cam follower members, each of said thread means co operating with thread means formed on each of said elongated fasteners whereby rotation of said fasteners will cause said cam follower members to be drawn into engagement with said cam surfaces, and means on said cam follower adapted to engage a portion of said mounting socket for rigidly mounting said terminal block therein.
- a blind mounting arrangement for a terminal block comprising a socket member having a first bore communicating with a second bore of increased diameter relative to said first bore, shoulder means joining said bores, a terminal block received in said socket member and having a portion thereof projecting into said second bore, flange means formed on one end of said terminal block, said flange means being of greater diameter than said first bore to cover the same when said terminal block is fully inserted in said socket, means to mount said terminal block in said socket, said mounting means including at least one cam surface formed in the body of said terminal block, cam follower means engageable with said surface and having a portion thereof engageable with said shoulder joining said first and second bores, and fastener means extending through said flange into threaded engagement with said cam follower means and operatively urging said cam follower means into engagement with said cam surface in said body of said terminal block thereby to cause said portion to project laterally from said body and engage the shoulder joining said first and second bores and draw said flange into tight engagement with said socket.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US499618A US3397320A (en) | 1965-10-21 | 1965-10-21 | Terminal block mounting means for plug-in type photoelectric cell |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US499618A US3397320A (en) | 1965-10-21 | 1965-10-21 | Terminal block mounting means for plug-in type photoelectric cell |
Publications (1)
Publication Number | Publication Date |
---|---|
US3397320A true US3397320A (en) | 1968-08-13 |
Family
ID=23985993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US499618A Expired - Lifetime US3397320A (en) | 1965-10-21 | 1965-10-21 | Terminal block mounting means for plug-in type photoelectric cell |
Country Status (1)
Country | Link |
---|---|
US (1) | US3397320A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5153875U (en) * | 1974-10-22 | 1976-04-24 | ||
CN1106998C (en) * | 1997-10-02 | 2003-04-30 | 日本酸素株式会社 | Mounting structure of metal foil for isolating radiant heat of insulating article |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1117084A (en) * | 1914-11-10 | James C Phelps | Attachment for conduit outlet-boxes. | |
US3187294A (en) * | 1963-05-29 | 1965-06-01 | Pass & Seymour Inc | Quick mounting strap for electric receptacle |
-
1965
- 1965-10-21 US US499618A patent/US3397320A/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1117084A (en) * | 1914-11-10 | James C Phelps | Attachment for conduit outlet-boxes. | |
US3187294A (en) * | 1963-05-29 | 1965-06-01 | Pass & Seymour Inc | Quick mounting strap for electric receptacle |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5153875U (en) * | 1974-10-22 | 1976-04-24 | ||
CN1106998C (en) * | 1997-10-02 | 2003-04-30 | 日本酸素株式会社 | Mounting structure of metal foil for isolating radiant heat of insulating article |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4477143A (en) | Orientable twistlock receptacle | |
US3561317A (en) | Self-indicating clamping bolt | |
US3978761A (en) | Fastener assembly | |
US3340494A (en) | Electrical connector device | |
US4062613A (en) | Connecting device | |
US4354721A (en) | Attachment arrangement for high voltage electrical connector | |
US3278203A (en) | Swivel connector for lamps and the like | |
HU205682B (en) | Junction box for connecting electrical cables | |
US3801952A (en) | Cable clamp with locking means | |
US4645289A (en) | Quick connect power tap system | |
GB1206057A (en) | Jacketed flexible metallic conduit connector | |
US2295339A (en) | Explosionproof lamp | |
US3397320A (en) | Terminal block mounting means for plug-in type photoelectric cell | |
EP0613172B1 (en) | Single-cap lamp | |
JPH09139267A (en) | Outlet assembly of photoelectric controller and outlet that is used for it | |
US2774947A (en) | Sealing means on fixtures for fluorescent tubes | |
US5280966A (en) | Conduit connector for non-metallic enclosures | |
GB1330823A (en) | Stud assembly for a quick release fastener | |
CN209298463U (en) | A kind of photovoltaic connector | |
US2984812A (en) | Tubular lamp and socket housing juncture seal | |
US3120419A (en) | Adapters for electric lamps | |
EP0020833B1 (en) | Closure assembly | |
DE10146877A1 (en) | reflector lamp | |
US1380063A (en) | Electric-lamp socket | |
US2788504A (en) | Lamp socket adaptor |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: ELTRA CORPORATION, A CORP. OF NY Free format text: CERTIFIED COPY OF MERGER FILED IN THE OFFICE OF SECRETARY OF STATE OF DELAWARE ON JUNE 6, 1980, SHOWING MERGER AND CHANGE OF NAME OF ASSIGNOR;ASSIGNOR:ATREL CORPORATION (INTO);REEL/FRAME:003992/0237 Effective date: 19811020 Owner name: ELTRA CORPORATION, OHIO Free format text: CERTIFIED COPY OF MERGER FILED IN THE OFFICE OF SECRETARY OF STATE OF DELAWARE ON JUNE 6, 1980, SHOWING MERGER AND CHANGE OF NAME OF ASSIGNOR;ASSIGNOR:ATREL CORPORATION;REEL/FRAME:003992/0237 Effective date: 19811020 |
|
AS | Assignment |
Owner name: ALLIED CORPORATION; COLUMBIA RD. AND PARK AVE., MO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:ELTRA CORPORATION;REEL/FRAME:004026/0293 Effective date: 19820531 Owner name: ALLIED CORPORATION, NEW JERSEY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ELTRA CORPORATION;REEL/FRAME:004026/0293 Effective date: 19820531 |