CA1160422A - Locking device for framework components - Google Patents
Locking device for framework componentsInfo
- Publication number
- CA1160422A CA1160422A CA000389694A CA389694A CA1160422A CA 1160422 A CA1160422 A CA 1160422A CA 000389694 A CA000389694 A CA 000389694A CA 389694 A CA389694 A CA 389694A CA 1160422 A CA1160422 A CA 1160422A
- Authority
- CA
- Canada
- Prior art keywords
- operation means
- locking device
- casing
- received
- hook portions
- 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
Links
- AYFVYJQAPQTCCC-GBXIJSLDSA-N L-threonine Chemical compound C[C@@H](O)[C@H](N)C(O)=O AYFVYJQAPQTCCC-GBXIJSLDSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000006187 pill Substances 0.000 description 2
- 101150110503 END3 gene Proteins 0.000 description 1
- 241001302210 Sida <water flea> Species 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- BALXUFOVQVENIU-KXNXZCPBSA-N pseudoephedrine hydrochloride Chemical group [H+].[Cl-].CN[C@@H](C)[C@@H](O)C1=CC=CC=C1 BALXUFOVQVENIU-KXNXZCPBSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B7/00—Connections of rods or tubes, e.g. of non-circular section, mutually, including resilient connections
- F16B7/04—Clamping or clipping connections
- F16B7/044—Clamping or clipping connections for rods or tubes being in angled relationship
- F16B7/0446—Clamping or clipping connections for rods or tubes being in angled relationship for tubes using the innerside thereof
- F16B7/0453—Clamping or clipping connections for rods or tubes being in angled relationship for tubes using the innerside thereof the tubes being drawn towards each other
- F16B7/0466—Clamping or clipping connections for rods or tubes being in angled relationship for tubes using the innerside thereof the tubes being drawn towards each other by a screw-threaded stud with a conical tip acting on an inclined surface
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mutual Connection Of Rods And Tubes (AREA)
- Joining Of Building Structures In Genera (AREA)
- Display Racks (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A locking device for connecting between a multi-grooved pillar member and a multi-grooved beam member comprising an elongated casing, an operation means received in said casing for slidable movement between the retracted and advanced positions and having hook portions adapted to engage said pillar member to connect between the pillar member and beam member in the retracted position of said operation means and a wedge member received in said operation means and having an arrow-shaped leading end to cause said hook portions to engage said pillar member when said operation means in its retracted position.
A locking device for connecting between a multi-grooved pillar member and a multi-grooved beam member comprising an elongated casing, an operation means received in said casing for slidable movement between the retracted and advanced positions and having hook portions adapted to engage said pillar member to connect between the pillar member and beam member in the retracted position of said operation means and a wedge member received in said operation means and having an arrow-shaped leading end to cause said hook portions to engage said pillar member when said operation means in its retracted position.
Description
1 lGV422 LOCX~NG DEVICE FOR ~RAMæwo~x COMPONENTS
BACKGROUND OF T~E INVENTION
This invention relates to lmprovement~ in a locking device for aonnecting betw~en a multl-grooved hollow pillar m~mber and a multi-grooved hollow beam mambar which h~ve b~en of late increasingly u~ed or provi~ing a framework portion or partltion of a show ca~e or shelf.
. There have been propo~ed and practically employ~d a variety of locking d~vice~ of this~type and the locking device of this type is inserted into the hollow body of a multi-grooved hollow beam member until a ~hreaded hole in the base or rear end o the device align~ with ~ through hole in the beam member and a ~crew i~ screwed through the through hole into the threaded hole to cau~e the hooX portion~ at the leading end of the loc~ing device to protrude out of.
the leading end of the multi-groo~ed beam member into a multi-grooved hollow pilIar member adapted to be connected to the beam membex and to expand or separate from each other to abut aga$n~t the inner wall of a selected one of the grooves on the pillar member or the hook portion~ at th~ leading end of the locking device 2S which protrude out of the beam member are cau~ed to grip the edge~ of the ad~acent grooves in the p~llar wusber.
H~wev~r, in the conventional loc~ing deYice referred to hereinabove, since the connection between the mult-i-grooved hollo~ pill~r ~nd be~m member~ rely - ` '2" 1 lG~422 upon ~he abutment forc~ pxovided ~y the expansion or ~aparation of th~ hook port ons of the loa~ng devlce against the sQlected groove in the pillar - member or the gripping of the edge~ of the adjacent S grooves in the pillar mamber by the hook portion~, whQn the magnitude of a load applied to the beam msmber exceed~ the abutment force, the beam member easily slides down the pillar member and thu~, the con~entional locking device can not provide a ~uffi-c~ent locking force wh~n any excessi~ely high load isappl~ed to the beam member.
SUMMARY QF THE INVENTION
Therefore, the pr~ent invention i8 ~ to provide a locking deYice for connecting between a multi-grooved hollow pillar member and a multi-grooved hollow beam ~ember which can effectively eliminate the di~-advantag~ of the priox art Iock~ng device~ of the type and which is simpler $n construction.
According to the present invention, there has bQen provided a locking device adapted to be received in the hollow body of a multi-grooved hollow beam member to connect said beam member to a multi-grooved hollow pillar member which compri~es an elongated cas ~ng of U-shaped cross-section open at the opposite ends and having a threaded hole in one of the opposite side walls of ~aid ca~ing, an operation mean~ extending with-in ~aid casing for movement botween operative a~d non-operative positions along the longitudinal ~xi~ of the - casing and havtng hook portlon~ for ~ng~ging and di~-engaging from a ~elect~d one of th~ grooYe~ ai d 3 1 1~0422 pillar member and a wedg~ membar rece~v~d in said operatlon mean~ to cause sald hook portlon~ to ~ngage a~d disengage ~rom s~id selecte~ groove in th~ groov-~d plllar member as ~aia opera~ion m~an~ move~ between said operative and nonoperative positions.
The above and o~her ob~ects and attendant aduantages o~ the pre~ent ~nv~ntion will be more r~adily apparent to those sXilled in ~he ar~ from a r~ading of the ollowing detalled descr~ption in conjunctlon with the accompanying drawlngs which show one pref~rred embodim~nt of the pxe~ent invention for illu~txation purpo~e only, but not fox limiting the scope of the 8ame in any way.
BRIEE' DESCRIPTION OF THE DRAWINGS
The accompanying drawings show one preferred embodiment of the locking device con~tructed in accord-ance with the princlple of thQ present inventlon in which:
Fig. 1 ls a perspective view of said locking device with the top plate detached from the casing;
Fig. 2 is a plan view on an enlarged 3cale of ~aid locking deYice in horizontal sectLon showing ~he devic~ in it8 unlocXed po~ition;
Fig. 3 is similar to Fig. 2, but ~hows the device in it~ locked position: and Fig. 4 is a perspective view of multi-grooved hollow pillar and beam memhers to be locked *oga~hex by said loc~ing device of the prQ~ent lnventlon.
DESC~IPTION OF PREF~RRæD EMBODIMENT
~he pr~sent inv~ntlon w~ll be ~ow de~cribed - J 1~22 r~ferring to the accompanying drawings in which one preferred smbodim~n~ o the lo~king device o~ the invantion ~8 ~hown for illustration purpose.
The locking device of the invention generally comprisas an elo~gated flat battom plate 10 and a pair of opposite ~ide walls 11, 11' which have the 8am~ length as the bottom plate 10 and are connected at the bottom to the innex or upper sur~ace of tha ~ottom plate lO at the opposite ~ide edges of ~he latter by means of con~entional tongue and groove con-nection mean~ ~not shcwn) to form an open-ended casing of U-shaped cross-section as ~een in end eleva-tion. Each of the side wall~ ll, ll' i~ form~d on the top thereof with an upright ear lla which i8.
lS adapted to be press-fitted in the associated one of r~co~ses 12a, 12a formed in an ~longated flat top plate 12 which has the ~ame dimensions as the bottom plate 10 and cover~ the ca~ing formed by the bottom plate lO and side wall~ 11, ll'. The ~ide walls ll, 11' also include aligned openings llb, ll'b, re~pectively, the purpose of which will be described hereinafter.
The sid~ wall ll also has on the outer surface a bulge llc pro~ided wi~h a threaded hole in which a hollow ~crew 23 having a pointed l~ading edg~ and a hexagonal thr~d~d inner surface i~ to be received. One of the sid~ walls ll' is recessed at Il'c to provide an abut-mQnt thQ the purpo~ of w/hich w11l be al~o d~scribed herein~fter. The bottom of the reco~ ll'c ls provid~d in th~ cQnter th~r~f wlth an openlng ll'd for th~
30 pllrpO80 to b~ d~l3crlbed h~re~ ~tafter.
.
,_ A slidable operation mean~ 13 extend~ longi-tud~nally and i8 slldably received in the casing formed by the bottom plate lO and side walls 11, 11' and compri~es a pair of simllar elongated npxight plates 14, 14 put together back to back. The one or leading ~nds of the plates 14, 14 are bent outwardly ~n the opposite direation~ at right angles with re~pect to the rest of the plate6 to provide hood portions 15, lS of which description will be made hereinafter and the plate~ are rigidly secured to each other at L6 adjacent to the other or rear end~ thereof by means of spo~ welding, for example. The plates 14, 14 include openings 17, 17 coextend over a ~ub~tantial length between the hook portions 15, 15 and th~ 8pot weld~ng 16 or the purpo~e to be describe~ hereinaEter.
The rear or right-hand edge of the opening 17 in the plate 14 which faces the ~ide wall 11 is bevelled at 18 for the purpose to be described hereinafter.
A wedge mem~er 20 having a substantially arrow cross-seçtion leading end portion 21 as seen in plan $s received in the openings 17, 17 in the plate~ 14, 14 and the openi~g~ llb, ll'b in the ~ide walls ll, ll'~
The wedge member 20 includes a pair of pro~ections 22,
BACKGROUND OF T~E INVENTION
This invention relates to lmprovement~ in a locking device for aonnecting betw~en a multl-grooved hollow pillar m~mber and a multi-grooved hollow beam mambar which h~ve b~en of late increasingly u~ed or provi~ing a framework portion or partltion of a show ca~e or shelf.
. There have been propo~ed and practically employ~d a variety of locking d~vice~ of this~type and the locking device of this type is inserted into the hollow body of a multi-grooved hollow beam member until a ~hreaded hole in the base or rear end o the device align~ with ~ through hole in the beam member and a ~crew i~ screwed through the through hole into the threaded hole to cau~e the hooX portion~ at the leading end of the loc~ing device to protrude out of.
the leading end of the multi-groo~ed beam member into a multi-grooved hollow pilIar member adapted to be connected to the beam membex and to expand or separate from each other to abut aga$n~t the inner wall of a selected one of the grooves on the pillar member or the hook portion~ at th~ leading end of the locking device 2S which protrude out of the beam member are cau~ed to grip the edge~ of the ad~acent grooves in the p~llar wusber.
H~wev~r, in the conventional loc~ing deYice referred to hereinabove, since the connection between the mult-i-grooved hollo~ pill~r ~nd be~m member~ rely - ` '2" 1 lG~422 upon ~he abutment forc~ pxovided ~y the expansion or ~aparation of th~ hook port ons of the loa~ng devlce against the sQlected groove in the pillar - member or the gripping of the edge~ of the adjacent S grooves in the pillar mamber by the hook portion~, whQn the magnitude of a load applied to the beam msmber exceed~ the abutment force, the beam member easily slides down the pillar member and thu~, the con~entional locking device can not provide a ~uffi-c~ent locking force wh~n any excessi~ely high load isappl~ed to the beam member.
SUMMARY QF THE INVENTION
Therefore, the pr~ent invention i8 ~ to provide a locking deYice for connecting between a multi-grooved hollow pillar member and a multi-grooved hollow beam ~ember which can effectively eliminate the di~-advantag~ of the priox art Iock~ng device~ of the type and which is simpler $n construction.
According to the present invention, there has bQen provided a locking device adapted to be received in the hollow body of a multi-grooved hollow beam member to connect said beam member to a multi-grooved hollow pillar member which compri~es an elongated cas ~ng of U-shaped cross-section open at the opposite ends and having a threaded hole in one of the opposite side walls of ~aid ca~ing, an operation mean~ extending with-in ~aid casing for movement botween operative a~d non-operative positions along the longitudinal ~xi~ of the - casing and havtng hook portlon~ for ~ng~ging and di~-engaging from a ~elect~d one of th~ grooYe~ ai d 3 1 1~0422 pillar member and a wedg~ membar rece~v~d in said operatlon mean~ to cause sald hook portlon~ to ~ngage a~d disengage ~rom s~id selecte~ groove in th~ groov-~d plllar member as ~aia opera~ion m~an~ move~ between said operative and nonoperative positions.
The above and o~her ob~ects and attendant aduantages o~ the pre~ent ~nv~ntion will be more r~adily apparent to those sXilled in ~he ar~ from a r~ading of the ollowing detalled descr~ption in conjunctlon with the accompanying drawlngs which show one pref~rred embodim~nt of the pxe~ent invention for illu~txation purpo~e only, but not fox limiting the scope of the 8ame in any way.
BRIEE' DESCRIPTION OF THE DRAWINGS
The accompanying drawings show one preferred embodiment of the locking device con~tructed in accord-ance with the princlple of thQ present inventlon in which:
Fig. 1 ls a perspective view of said locking device with the top plate detached from the casing;
Fig. 2 is a plan view on an enlarged 3cale of ~aid locking deYice in horizontal sectLon showing ~he devic~ in it8 unlocXed po~ition;
Fig. 3 is similar to Fig. 2, but ~hows the device in it~ locked position: and Fig. 4 is a perspective view of multi-grooved hollow pillar and beam memhers to be locked *oga~hex by said loc~ing device of the prQ~ent lnventlon.
DESC~IPTION OF PREF~RRæD EMBODIMENT
~he pr~sent inv~ntlon w~ll be ~ow de~cribed - J 1~22 r~ferring to the accompanying drawings in which one preferred smbodim~n~ o the lo~king device o~ the invantion ~8 ~hown for illustration purpose.
The locking device of the invention generally comprisas an elo~gated flat battom plate 10 and a pair of opposite ~ide walls 11, 11' which have the 8am~ length as the bottom plate 10 and are connected at the bottom to the innex or upper sur~ace of tha ~ottom plate lO at the opposite ~ide edges of ~he latter by means of con~entional tongue and groove con-nection mean~ ~not shcwn) to form an open-ended casing of U-shaped cross-section as ~een in end eleva-tion. Each of the side wall~ ll, ll' i~ form~d on the top thereof with an upright ear lla which i8.
lS adapted to be press-fitted in the associated one of r~co~ses 12a, 12a formed in an ~longated flat top plate 12 which has the ~ame dimensions as the bottom plate 10 and cover~ the ca~ing formed by the bottom plate lO and side wall~ 11, ll'. The ~ide walls ll, 11' also include aligned openings llb, ll'b, re~pectively, the purpose of which will be described hereinafter.
The sid~ wall ll also has on the outer surface a bulge llc pro~ided wi~h a threaded hole in which a hollow ~crew 23 having a pointed l~ading edg~ and a hexagonal thr~d~d inner surface i~ to be received. One of the sid~ walls ll' is recessed at Il'c to provide an abut-mQnt thQ the purpo~ of w/hich w11l be al~o d~scribed herein~fter. The bottom of the reco~ ll'c ls provid~d in th~ cQnter th~r~f wlth an openlng ll'd for th~
30 pllrpO80 to b~ d~l3crlbed h~re~ ~tafter.
.
,_ A slidable operation mean~ 13 extend~ longi-tud~nally and i8 slldably received in the casing formed by the bottom plate lO and side walls 11, 11' and compri~es a pair of simllar elongated npxight plates 14, 14 put together back to back. The one or leading ~nds of the plates 14, 14 are bent outwardly ~n the opposite direation~ at right angles with re~pect to the rest of the plate6 to provide hood portions 15, lS of which description will be made hereinafter and the plate~ are rigidly secured to each other at L6 adjacent to the other or rear end~ thereof by means of spo~ welding, for example. The plates 14, 14 include openings 17, 17 coextend over a ~ub~tantial length between the hook portions 15, 15 and th~ 8pot weld~ng 16 or the purpo~e to be describe~ hereinaEter.
The rear or right-hand edge of the opening 17 in the plate 14 which faces the ~ide wall 11 is bevelled at 18 for the purpose to be described hereinafter.
A wedge mem~er 20 having a substantially arrow cross-seçtion leading end portion 21 as seen in plan $s received in the openings 17, 17 in the plate~ 14, 14 and the openi~g~ llb, ll'b in the ~ide walls ll, ll'~
The wedge member 20 includes a pair of pro~ections 22,
2~ outwardly extending in the oppo~ite directions from the oppos~te ~ides of the member to be received ln the opening~ llb, ll'b in the side wall~ ll, ll'.
All the component~ of the locking device of the present ~nvention as d~cr~bed herelnabove are formed of rigld m~tal ~uch as ste~l.
Now de~criptlon will bo mad~ of an instance ln .~
1 lB0422 which the lock~ng d~vi~e having the componont~ of the above-mentionQd construction and arrangement ~8 employed for locking ~ multi-grooved hollow pill~r member 30 and a multl-grooved hol-~ow beam member 40 S together (6ee Pig. 4, ~or example) which form a Pran~work portion or parti~io~ of a show case or ~helf.
As shown in Fig. 4, the pillar member 30 comprises a hollow body of squar~ cro~ section having vertical grooves 31, 31 form~d on its vertical two ad~acent faces disposed at right angles to each o~ler. ~ach vertical groove 31 i8 defined by the associated one face of the hollow body of the pillar member serving a~ tha bottom o~ the groove and a pair of opposite and spaced s~de walls extending outwardly Erom the ~ottom and bent at the leading or outer edges 32 towsrds each other at right angles with re~pect to the rest of the side wall~. Similarly, the beam member 40 compri~es a square cross-section body having horizontal grooves 41 form~d on its three ad~acent horizontal faces di~-posed at right angles to each o~her. Each ~.ori~ontal groove 41 i8 de~ined by the associated one facQ of the hollow body of the beam member serving as the bottom o the groove and a pair of opposite and spaced side walls extending outwardly from the bottom and bent at the leading or outsr edge~ 42 towards each other at right angle~ with respect to th~ re~t of the ~lde wall~.
The horizon~al face of the hollow body where th~ in~r~
mRdi~te groovo 4~ i~ form~d include~ a through hol~ 43 for the pUrpOfi~ to be d~scr~b~d hereinaft~r.
I~ aonn~ctlng ~hQ hori~o~tal be~m 40 to the - I ~B0422 pillar membex 30 at a desir~d height ~long the pillax membex, th~ l~ading ond of the b~am m~mber 40 i8 main-ta~ned in abutment aga~n~t a ~elected one o the two groov~s 31 on the plll~r m~mber 30 with the inter-m~d1ate groove ~1 on the beam member 40 where thethrough hole 43 is ~ormed facing inwardly~on the right-hand side as seen in Fig. 4 ) and the locking device of the inv~ntion is inserted into the holl~w body of the beam member 4Q a~ the rear end thereof (the right-hand ~nd as seen in Fig. 4) and moved within the hollowbody of the beam member until the opening llc in the side wal`l 11 align~ with the throuqh hole 43 in the hollow body of the ~eam ~ember 40. In this po~ition of the locking device, the hook portion~ 15, 15 at the ~5 leadin~ end3 of the plate~ 14, 14 of the operation means 13 protrude out of the leading end of the beam member 40 into the ad~acent groove 31. Thereafter, the hollow screw 23 is inserted through the aligned through hole 43 and the threaded hole in the bulge llc and then driven by a suitable driver (not shown) in the tighten-ing direction. A~ the screw 23 i~ driven in the direc-tion, the pointed leading edge of the ~crew 23 moves d Q along the bevelle~ face 18 at the rear edg~ of the opening 17 formed in o~e of the plates 14 of the opera~
tion means 13 until the point~d leading edge of the ~crew i8 received in the op~ning ll'd in the rece~s 11'c to cause the operat~on means 13 to r~tract gradual-ly within the ca31ng. As the operation mean~ 13 retracts, the arrow-sh~ped le~ding end portion 21 of tha wedge member 20 i~ ~or~ed to advance into the - ~ ~60~22 Cl~anC~!! bQt~W0en t~ p~ 8 14~ 14 to ~para~ the plate8 from eaah other where~y the hook port:Lons ~5, 15 at ~ho loading end~ o~ e plat4~ 14, 14 ~ to abut agalz~st th~ bent leading edgeQ 32, ~2 o~ the 5 particul~ groov~ 31. The abutment force of the hook portion~ 15, 15 appli~d again~t the bent ~dges 32, 32 of the groov~ 31 increases to a predetermined maximum value wh~n the ~crew ha~ ~en fully driven into the threaded hole llc in the side wall 11 o ~:he ca~ng and the abutment of the hook portion~ 15, 15 agninst the leading edge~ 32 and th~ tightened ~crew 23 fixm-ly hold the pillar member 30 and be3m ~ember 40 in their assembled condition wlth the hook portion~ 15, 15 abutt~ng against the lead~ng edge~ 32, 32 of the groove side walls. When it i~ deslred that the pillar and b~am m~mbQrs 30, 40 a~e di3connected from each other~
the hollow screw 23 i8 1008en~d to alllow the operation m~an~ 13 to advance within the casing and as a re~ult, the plates l4, 14 of the operation means 13 resilieDtly return to their normal or original contac~lng position :
in ~hich the hook portion~ 15, 15 at their lead~ng end~ di~engage from the sida wall leading edges 32,32.
As cl~r from the forego~ng de~cription on the preferred embodim~nt o~ t~ present inventlon, accord-ing to the pre~ent inv~ntion, as the ~rffw 23 i8dr~ven into the thre~ded hole llc in the side wAll 11, the op~ration means 13 retr~cts withln th~ casing, ~he wedge ~mbqr 20 t~nd~ to gxad~ally ~epara~e ~h~ hook portlon~ 15, 15 fr~n each oth~r ~o c~uae the hook portions to ~irmly ~but against ~h~ ~ide wall ~ding l 160~22 ~3tdgo8 23 of th~ grcK~ve 21 whereby ~e pillar mem~r 30 and beam member 40 are firmly connected togother.
Thus, different from the conventional lockinq dev~ce of ~his t~pe in which the connection bntween the 5 pillar and beam mQmbers 801~l1y relys ~lpon 'che abut-ment of the expanded hook portion again~t the pillar m~ber groove side walls, according to the present invention, both the fa~tened screw and expand~d hook portions firmly hold the pillar and beam me~llbers in thelr connected condition and ~us, the present in-vention will contri~ut~ to the art gxeatly.
While the present invention ha~ been particular-ly 5hown and de~cxibed w~th ref~rence to the preferred emhodiment thereo~, it will be understooa by 15 those skilled in tne art ~hat varioufi change3 in form and de~ails may be made therein witlout depar~in~
fror the spirit and scope of th~ invention.
.
~0
All the component~ of the locking device of the present ~nvention as d~cr~bed herelnabove are formed of rigld m~tal ~uch as ste~l.
Now de~criptlon will bo mad~ of an instance ln .~
1 lB0422 which the lock~ng d~vi~e having the componont~ of the above-mentionQd construction and arrangement ~8 employed for locking ~ multi-grooved hollow pill~r member 30 and a multl-grooved hol-~ow beam member 40 S together (6ee Pig. 4, ~or example) which form a Pran~work portion or parti~io~ of a show case or ~helf.
As shown in Fig. 4, the pillar member 30 comprises a hollow body of squar~ cro~ section having vertical grooves 31, 31 form~d on its vertical two ad~acent faces disposed at right angles to each o~ler. ~ach vertical groove 31 i8 defined by the associated one face of the hollow body of the pillar member serving a~ tha bottom o~ the groove and a pair of opposite and spaced s~de walls extending outwardly Erom the ~ottom and bent at the leading or outer edges 32 towsrds each other at right angles with re~pect to the rest of the side wall~. Similarly, the beam member 40 compri~es a square cross-section body having horizontal grooves 41 form~d on its three ad~acent horizontal faces di~-posed at right angles to each o~her. Each ~.ori~ontal groove 41 i8 de~ined by the associated one facQ of the hollow body of the beam member serving as the bottom o the groove and a pair of opposite and spaced side walls extending outwardly from the bottom and bent at the leading or outsr edge~ 42 towards each other at right angle~ with respect to th~ re~t of the ~lde wall~.
The horizon~al face of the hollow body where th~ in~r~
mRdi~te groovo 4~ i~ form~d include~ a through hol~ 43 for the pUrpOfi~ to be d~scr~b~d hereinaft~r.
I~ aonn~ctlng ~hQ hori~o~tal be~m 40 to the - I ~B0422 pillar membex 30 at a desir~d height ~long the pillax membex, th~ l~ading ond of the b~am m~mber 40 i8 main-ta~ned in abutment aga~n~t a ~elected one o the two groov~s 31 on the plll~r m~mber 30 with the inter-m~d1ate groove ~1 on the beam member 40 where thethrough hole 43 is ~ormed facing inwardly~on the right-hand side as seen in Fig. 4 ) and the locking device of the inv~ntion is inserted into the holl~w body of the beam member 4Q a~ the rear end thereof (the right-hand ~nd as seen in Fig. 4) and moved within the hollowbody of the beam member until the opening llc in the side wal`l 11 align~ with the throuqh hole 43 in the hollow body of the ~eam ~ember 40. In this po~ition of the locking device, the hook portion~ 15, 15 at the ~5 leadin~ end3 of the plate~ 14, 14 of the operation means 13 protrude out of the leading end of the beam member 40 into the ad~acent groove 31. Thereafter, the hollow screw 23 is inserted through the aligned through hole 43 and the threaded hole in the bulge llc and then driven by a suitable driver (not shown) in the tighten-ing direction. A~ the screw 23 i~ driven in the direc-tion, the pointed leading edge of the ~crew 23 moves d Q along the bevelle~ face 18 at the rear edg~ of the opening 17 formed in o~e of the plates 14 of the opera~
tion means 13 until the point~d leading edge of the ~crew i8 received in the op~ning ll'd in the rece~s 11'c to cause the operat~on means 13 to r~tract gradual-ly within the ca31ng. As the operation mean~ 13 retracts, the arrow-sh~ped le~ding end portion 21 of tha wedge member 20 i~ ~or~ed to advance into the - ~ ~60~22 Cl~anC~!! bQt~W0en t~ p~ 8 14~ 14 to ~para~ the plate8 from eaah other where~y the hook port:Lons ~5, 15 at ~ho loading end~ o~ e plat4~ 14, 14 ~ to abut agalz~st th~ bent leading edgeQ 32, ~2 o~ the 5 particul~ groov~ 31. The abutment force of the hook portion~ 15, 15 appli~d again~t the bent ~dges 32, 32 of the groov~ 31 increases to a predetermined maximum value wh~n the ~crew ha~ ~en fully driven into the threaded hole llc in the side wall 11 o ~:he ca~ng and the abutment of the hook portion~ 15, 15 agninst the leading edge~ 32 and th~ tightened ~crew 23 fixm-ly hold the pillar member 30 and be3m ~ember 40 in their assembled condition wlth the hook portion~ 15, 15 abutt~ng against the lead~ng edge~ 32, 32 of the groove side walls. When it i~ deslred that the pillar and b~am m~mbQrs 30, 40 a~e di3connected from each other~
the hollow screw 23 i8 1008en~d to alllow the operation m~an~ 13 to advance within the casing and as a re~ult, the plates l4, 14 of the operation means 13 resilieDtly return to their normal or original contac~lng position :
in ~hich the hook portion~ 15, 15 at their lead~ng end~ di~engage from the sida wall leading edges 32,32.
As cl~r from the forego~ng de~cription on the preferred embodim~nt o~ t~ present inventlon, accord-ing to the pre~ent inv~ntion, as the ~rffw 23 i8dr~ven into the thre~ded hole llc in the side wAll 11, the op~ration means 13 retr~cts withln th~ casing, ~he wedge ~mbqr 20 t~nd~ to gxad~ally ~epara~e ~h~ hook portlon~ 15, 15 fr~n each oth~r ~o c~uae the hook portions to ~irmly ~but against ~h~ ~ide wall ~ding l 160~22 ~3tdgo8 23 of th~ grcK~ve 21 whereby ~e pillar mem~r 30 and beam member 40 are firmly connected togother.
Thus, different from the conventional lockinq dev~ce of ~his t~pe in which the connection bntween the 5 pillar and beam mQmbers 801~l1y relys ~lpon 'che abut-ment of the expanded hook portion again~t the pillar m~ber groove side walls, according to the present invention, both the fa~tened screw and expand~d hook portions firmly hold the pillar and beam me~llbers in thelr connected condition and ~us, the present in-vention will contri~ut~ to the art gxeatly.
While the present invention ha~ been particular-ly 5hown and de~cxibed w~th ref~rence to the preferred emhodiment thereo~, it will be understooa by 15 those skilled in tne art ~hat varioufi change3 in form and de~ails may be made therein witlout depar~in~
fror the spirit and scope of th~ invention.
.
~0
Claims (4)
1. A locking device adapted to be received in the hollow body of a multi-grooved hollow beam member to connect said beam member to a multi-groov-ed hollow pillar member, comprising an elongated casing of U-shaped cross-section open at the opposite ends and having a threaded hole in one of the opposite side walls of said casing, an operation means extend-ing within said casing for movement between operative and nonoperative positions along the longitudinal axis of the casing and having hook portions for engaging and disengaging from a selected one of the grooves in said grooved pillar member and a wedge member received in said operation means to cause said hook portions to engage and disengage from said selected groove in the grooved pillar member as said operation means moves between said operative and no nonoperative positions.
2. The locking device as set forth in Claim 1, in which said operation means comprises a pair of elongated plates put together back to back and having said hook portions at the leading ends and secured together at the rear ends, said plates having through openings between said leading and rear ends, and said wedge member is received in said through holes in the plates and has an arrow-shaped leading and adapted to separate said hook portions from each other to cause the hook portions to engage said selected groove in the grooved pillar member as said operation means moves to said operative position.
3. The locking device as set forth in Claim 2, in which the rear edge of said opening in one of the plates is bevelled and a screw having the pointed leading edge is received in said threaded hole so that said pointed leading edge of the screw is guided along said bevelled edge as the screw is driven into the threaded hole.
4. The locking device as set forth in Claim 1, in which the opposite side walls of said casing have aligned through holes and said wedge member has a pair of projections extending from the opposite sides of the member in the opposite directions and received in said through holes in the opposite side walls.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15798280A JPS5926806B2 (en) | 1980-11-10 | 1980-11-10 | Connecting fitting for vertically grooved prismatic member and horizontally grooved horizontal frame member |
| JP157982/1981 | 1980-11-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1160422A true CA1160422A (en) | 1984-01-17 |
Family
ID=15661654
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000389694A Expired CA1160422A (en) | 1980-11-10 | 1981-11-09 | Locking device for framework components |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS5926806B2 (en) |
| CA (1) | CA1160422A (en) |
| DE (1) | DE3138530C2 (en) |
| GB (1) | GB2087027B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60175405U (en) * | 1984-04-28 | 1985-11-20 | 株式会社小糸製作所 | automotive lighting |
| JPH0218808Y2 (en) * | 1984-09-28 | 1990-05-25 | ||
| DE8512227U1 (en) * | 1985-04-25 | 1985-06-13 | Pazderka-Honsa, Jiri, 4005 Meerbusch | Lock for releasably connecting a component to a support |
| AU572032B2 (en) * | 1985-10-10 | 1988-04-28 | Boc Group, Inc., The | Medical apparatus with accessory mounting system |
| DE3636624A1 (en) * | 1986-10-28 | 1988-05-11 | Loh Kg Hailo Werk | Three-dimensional structure, in particular greenhouse |
| FR2754992B1 (en) * | 1996-10-28 | 2000-05-12 | Stoltz Jean | MULTIFUNCTIONAL ANGULAR PROFILE JOINING THE AMOUNTS OF FURNITURE |
| DE19817427A1 (en) * | 1998-04-18 | 1999-10-21 | Offenbroich A | Gripping connector for releasable connection between hollow sections |
| ES2971723T3 (en) * | 2019-07-31 | 2024-06-06 | Leonardo Srl | Furniture shelf support device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1550451A (en) * | 1967-11-10 | 1968-12-20 |
-
1980
- 1980-11-10 JP JP15798280A patent/JPS5926806B2/en not_active Expired
-
1981
- 1981-09-08 GB GB8127143A patent/GB2087027B/en not_active Expired
- 1981-09-28 DE DE19813138530 patent/DE3138530C2/en not_active Expired
- 1981-11-09 CA CA000389694A patent/CA1160422A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5926806B2 (en) | 1984-06-30 |
| GB2087027B (en) | 1984-08-22 |
| DE3138530C2 (en) | 1984-05-30 |
| JPS5781542A (en) | 1982-05-21 |
| DE3138530A1 (en) | 1982-06-16 |
| GB2087027A (en) | 1982-05-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |