CN101881132B - Ladder frame lock and ladder thereof - Google Patents
Ladder frame lock and ladder thereof Download PDFInfo
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- CN101881132B CN101881132B CN201010215121XA CN201010215121A CN101881132B CN 101881132 B CN101881132 B CN 101881132B CN 201010215121X A CN201010215121X A CN 201010215121XA CN 201010215121 A CN201010215121 A CN 201010215121A CN 101881132 B CN101881132 B CN 101881132B
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Abstract
The invention relates to a ladder frame lock and a ladder thereof, in particular to a lock for a ladder with a main ladder and an auxiliary ladder and the ladder thereof, wherein the ladder frame lock of the ladder comprises a movable lock part, a fixed lock part and a movable lock base part, wherein the movable lock part is provided with a movable lock hook part which can be hooked with the fixed lock hook part; the fixed lock part is provided with a fixed lock hook part which can be hooked with the movable lock hook part; the fixed lock part is installed on the main ladder frame or the auxiliary ladder frame; the movable lock part is installed on the movable lock base part through a pivot shaft; the movable lock part can be installed in a mode that a spring rotates around the pivot shaft of the movable lock base part; and the movable lock base part is installed on the auxiliary ladder frame or the main ladder frame. In the invention, the movable lock base part is used as a fixed component, the movable lock part is used as a movable component, and the spring is used for driving the movable lock hook part to open or clamp to realize hooking by combining with the fixed lock part, thereby locking the main ladder frame and the auxiliary ladder frame together. The invention has reasonable design and can conveniently and quickly realize locking and disconnection of the main ladder and the auxiliary ladder.
Description
Technical field
This case belongs to the ladder field, particularly has the lockset and the ladder thereof of the main ladder and the ladder of secondary ladder.Ladder with main ladder and secondary ladder includes but not limited to herringbone ladder or extension ladder.
Background technology
For ladder with main ladder and secondary ladder, when folding major and minor ladder, need safety locking, be convenient to collection, industry is constantly pursued for this reason, but still can not satisfy market demand.
As 01,200,186 1 kinds of Folding ladders of disclosed Chinese patent; Above its fore-stock, be articulated with after-poppet; The fore-stock arranged on both sides has several gangboards, and the front end of gangboard is pivoted through connecting rod connection, also is provided with a cross bar on the after-poppet; Last gangboard front end in several gangboards is provided with one and wears groove, and cross bar convexes with a block laterally; Wear and be equipped with a blocking plate in the groove, the outer end of blocking plate is provided with a sliding piece, and the inboard is formed with the top and supports edge, and the blocking plate extends to form the blocking hook that can chimericly be fastened on the said cross bar to the inner.
And for example disclosed Chinese patent 02229881.9 the utility model proposes a kind of snap close, and particularly a kind of snap close that is used for ladder, this snap close comprise a main snap close 1; There is clamping body on one side of main snap close 1, cooperates snap close 2 to link to each other through a connecting axle 11 with one at the another side of main snap close 1, and the other end of said cooperation snap close 2 has fixing hole 21; And at main snap close 1 or/and cooperate on the snap close 2 stopping means arranged; Make winner's snap close 2 and cooperate snap close 2 can only be in limited range movable, use two ladders of the ladder of this snap close to link to each other with the two ends of snap close respectively, when the ladder expansion is " one " shape vertical ladder or two ladders fold when being down " V " shape foot of ladder; The clamping body of snap close blocks card post 72; After ladder has made this snap close, need not to take off snap close when folding, bring convenience to use; And make ladder can doublely do " one " shape vertical ladder and to fall " V " shape foot of ladder dual-purpose
Do not see the lockset of realizing locking main ladder and secondary ladder through the terraced frame that locks in the known technology, the such technology of industry expectation is come out, with the quality of further raising ladder.Further hope that the lock assembly structure is simpler, and lock assembly be solid lightweight, promptly lock quick and safe and reliable.
Summary of the invention
Problem to be solved by this invention is to overcome the above-mentioned defective that aforementioned techniques exists, and a kind of terraced frame lock and ladder thereof are provided.
The present invention solves terraced frame lock technology problem and takes following technical scheme to realize; Terraced frame lock according to a kind of ladder provided by the invention; Wherein, Said terraced frame lock 7 is made up of moving lock portion 72, lock portion 71 and movable lock base part 70, and moving lock portion has the moving lock latch hook portion 722 that can hook together with the lock hook portion, and lock portion has the lock hook portion 7101 that can hook together with moving lock latch hook portion;
Moving lock portion can drive moving lock latch hook portion and opens or clamp under spring action thus, realizes hooking together with the lock hook portion of task;
This case technical solution problem can also take following technical scheme further to realize:
The terraced frame lock of aforementioned ladder, wherein, integrally formed moving lock latch hook portion of described moving lock portion 722 and moving lock force section 721 form moving lock pivot hole 7234 between moving lock latch hook portion and moving lock force section; Spring 75 is by being pivotally mounted between movable lock base part 70 and the moving lock portion 72;
The terraced frame lock of aforementioned ladder, wherein, the said lock portion 71 integrally formed lock buck plates 710 and lock hook portions 7101 that can coincide with the terraced frame of main ladder or secondary ladder; This lock hook portion 7101 is used for hooking together each other with moving lock latch hook portion 722 coupling.
The terraced frame lock of aforementioned ladder, wherein, the lock buck plate of said lock portion has lock first fitting surface 710a and the lock second fitting surface 710b; The second fitting surface 710b along the lock buck plate stretches out formation lock hook portion 7101.
The terraced frame lock of aforementioned ladder, wherein, the axle center of said moving lock pivot hole 7234 and moving lock latch hook portion and moving lock force section are on the same horizontal line L of on the same horizontal line L or the axle center of moving lock pivot hole 7234 near moving lock latch hook portion and place, moving lock force section.
Be positioned between moving lock latch hook portion 722 and the moving lock force section 721 the moving lock pivot hole above form moving lock protrusion 723 so that the axle center of moving lock pivot hole 7234 and moving lock latch hook portion and moving lock force section are basically on same horizontal line L; But the angle of these setting limited lock latch hook portion 722 perks is in preset range.
The terraced frame lock of aforementioned ladder, wherein, said lock hook portion 7101 has fixed lock hook groove inclined-plane 71011, forms the fixed lock hook groove 7100 that satisfies preset angle between the first fitting surface 710a of this fixed lock hook groove inclined-plane and lock buck plate; This fixed lock hook groove inclined-plane 71011 forms the fixed lock hook end 71013 of satisfying preset angle β with the end face 71012 of lock hook portion;
The terraced frame lock of aforementioned ladder; Wherein, The moving lock latch hook portion 722 of said moving lock portion 72 is made up of moving lock hook portion 7221 and moving lock latch hook neck 7220; This moving lock hook portion 7221 has moveable lock hook groove inclined-plane 72211, form to satisfy the moveable lock hook groove 72213 of preset angle β ' between this hook groove inclined-plane and the moving lock latch hook neck 7220, and the moveable lock hook end 7221 of said moving lock portion has moveable lock hook groove inclined-plane 72211 and moving lock sliding bevel 72214; Form moving lock hook portion end face 72212 between moveable lock hook groove inclined-plane 72211 and the moving lock sliding bevel 72214, moving lock hook portion end face 72212 forms with moveable lock hook groove inclined-plane 72211 and satisfies preset angle ' moving lock latch hook termination 72210.
Thus, form the contact surface that moving lock latch hook termination and fixed lock hook groove match, thereby reach the safe effect that hooks together;
The terraced frame lock of aforementioned ladder, wherein, the fixed lock hook groove is used to hold moving lock latch hook termination 72210, the preset angle of the preset angle of fixed lock hook groove and moving lock latch hook termination ' quite; The preset angle β of this fixed lock hook end and the preset angle β ' of moveable lock hook groove are suitable;
The terraced frame lock of aforementioned ladder; Wherein, The moveable lock hook groove is used to hold fixed lock hook end 71013, and the preset angle β ' of moveable lock hook groove is suitable with the preset angle β of fixed lock hook end, the preset angle of this moving lock latch hook termination ' suitable with the preset angle of fixed lock hook groove 7100;
The terraced frame lock of aforementioned ladder; Wherein, Said lock portion extends upward end face 71012 with hook portion along the lock second fitting surface 710b of lock buck plate and crosses and form the stupefied limit of lock portion 71014, and the stupefied limit of this lock portion can contact the moving lock sliding bevel 72214 of moveable lock hook end;
The terraced frame lock of aforementioned ladder; Wherein, Pick up the ears 701a and the assembling of second pivot of first pivot of said pedestal first fitting surface 700a assembling picks up the ears to have between the 701b pedestal ear wall portion 7001; Said pedestal ear wall portion 7001 has the pedestal ear wall portion top 70011 of satisfying preset height, and this pedestal ear wall portion top is used for the degree of bowing of moving lock latch hook portion is formed restriction.
Thus; When the major and minor terraced frame of ladder closes up; Secondary terraced frame with moving lock wherein moving lock sliding bevel 72214 of moving lock latch hook portion collides the main ladder frame wherein in the stupefied limit of the lock portion 71014 of lock hook portion with lock, and the stupefied limit of lock portion forms active force to the moving lock sliding bevel, and the active force that impels moving lock portion to overcome spring clockwise rotates around pivot 74; Therefore, the more realization of convenient power-saving locking when closing up major and minor ladder;
The terraced frame lock of aforementioned ladder, wherein, formation hook-type hollow out in the middle of the moving lock hook portion of said moving lock latch hook portion and the moving lock latch hook neck; The stupefied limit of said lock portion is the stupefied limit of circular arc.
The terraced frame lock of aforementioned ladder, wherein, said movable lock base part 70 has the pedestal buck plate 700 that can coincide with the terraced frame of secondary ladder or main ladder, and this pedestal buck plate has pedestal first fitting surface 700a and the pedestal second fitting surface 700b; First pivot assembling 701a and second assembling 701b that picks up the ears that picks up the ears is set on the said pedestal first fitting surface 700a; Between picking up the ears, this first, second pivot assembling forms the spring installation portion 7001 of putting spring; Said spring 75 is by the spring spire 752 on the ability suit pivot and first exit 751 and second exit 750 of spring spire; This first exit 751 is used to replace moving lock force section 721; Second exit is embedded in the spring installation portion, receives replacing of the pedestal first fitting surface 700a.
First exit of said spring and second exit are the opposite tension force of active force, form a kind of torsion spring structure, and said spring is used to act between moving lock force section and pedestal first fitting surface, makes moving lock form twisting resistance;
The terraced frame lock of aforementioned ladder; Wherein, Said spring 75 has two spring spires that structure is identical; The i.e. first spring spire 752a and the second spring spire 752b, integrally formed exit changeover portion 751c between first exit of first exit of the first spring spire and the second spring spire.
Thus, first exit of first spring spire formation " ㄇ " the shape structure that links to each other with first exit of the second spring spire and the exit changeover portion one between the two can make moving lock form more strong twisting resistance, effectively strengthens the clamping dynamics; The spring of this structure can obtain bigger twisting resistance under equal materials situation;
The present invention solves the ladder technical problem and takes following technical scheme to realize; According to a kind of ladder provided by the invention with aforementioned arbitrary terraced frame lock; Comprise master's ladder 1, secondary ladder 2, the terraced platform 3 that is installed between main ladder and the secondary ladder can also be arranged, wherein; Ladder frame lock 7 is installed on main terraced frame and the secondary terraced frame, and the assembling of first pivot of pedestal first fitting surface is picked up the ears and second assembling picks up the ears all have defining flange 7011a, 7011b in the said movable lock base part.
This case technical solution problem can also take following technical scheme further to realize:
Aforesaid ladder, wherein, moving lock hook portion end face 72212 is parallel to each other with the horizontal line L at moving lock latch hook portion, place, moving lock force section;
Aforesaid ladder; Wherein, Pick up the ears 701a and the assembling of second pivot of first pivot of said pedestal first fitting surface 700a assembling picks up the ears to have between the 701b pedestal ear wall portion 7001; Said pedestal ear wall portion 7001 has the pedestal ear wall portion top 70011 of satisfying preset height, and this pedestal ear wall portion top is used for the degree of bowing of moving lock latch hook portion is formed restriction.
The present invention compared with prior art has significant advantage and beneficial effect.
Can know by above technical scheme; The present invention is under the structure configuration of excellence; Has following advantage at least: the reasonable setting of this case ladder frame lock; This case is to decide element, be element with moving lock portion with movable lock base part, utilizes spring to drive moving lock latch hook portion and opens or clamps, combine the realization of lock portion to hook together, thereby major and minor terraced frame is locked together; This case is reasonable in design can conveniently to realize locking and disengagement; The reasonable disposition of this case lock portion and moving lock portion, make terraced frame lock be solid not only lightweight, promptly lock quick but also safe and reliable; And its simple structure can make manufacturing process more optimize, and effectively lowers cost of production, the industry of being more convenient for promotion and application.
The specific embodiment of the present invention is provided by following examples and accompanying drawing thereof in detail.
Description of drawings
Fig. 1 is this case ladder open mode, the structural relation sketch map of terraced frame latch hook and ladder;
Fig. 1 a is the local structure for amplifying sketch map that moving lock portion combines with terraced frame;
Fig. 1 b is the local structure for amplifying sketch map that lock portion combines with terraced frame;
Fig. 2 is that perspective view is amplified in the part that this case ladder frame latch hook combines with the major and minor terraced frame of ladder;
Fig. 3 is this case ladder collapse state, the structural relation sketch map of terraced frame latch hook and ladder;
Fig. 3 a is the local enlarged diagram of Fig. 3;
Fig. 4 is the perspective view that the assembling of this case ladder frame lock is decomposed;
Fig. 5 is the plane structure sketch map of the moving lock of this case ladder frame latch hook when breaking away from lock;
Plane structure sketch map when Fig. 6 is this case ladder frame latch hook locking major-minor ladder.
The specific embodiment
Below in conjunction with preferred embodiment, to according to the specific embodiment provided by the invention, characteristic and effect thereof, specify as after; For simple and purpose clearly, the omission that hereinafter is appropriate the description of known technology, in order to avoid those unnecessary details influences are to the description of present technique scheme.
Shown in Fig. 1-6, a kind of ladder comprises main ladder 1, secondary terraced 2 and is installed in the terraced platform 3 between main ladder and the secondary ladder; Wherein, Ladder frame lock 7 is installed on main terraced frame and the secondary terraced frame, and terraced frame lock is responsible for main terraced frame of locking and secondary terraced frame when main ladder and secondary ladder close up, and is convenient to collect;
Said terraced frame lock 7 is made up of moving lock portion 72, lock portion 71 and movable lock base part 70; Lock portion 71 is installed on main terraced frame 1 or the secondary terraced frame 2; Moving lock portion 72 is installed on the movable lock base part 70 through pivot 74 (referring to Fig. 4), and moving lock portion 72 is installing through the mode that spring rotates around the pivot formation of movable lock base part; Movable lock base part is installed on secondary terraced frame 2 or the main terraced frame 1, referring to Fig. 1,1a, 1b;
Said moving lock portion 72 has moving lock latch hook portion 722 and moving lock force section 721, between moving lock latch hook portion 722 and moving lock force section 721, is moving lock pivot hole 7234; Spring 75 is by being pivotally mounted between movable lock base part 70 and the moving lock portion 72, form thus with movable lock base part be decide element, with the clip structure of moving lock portion for moving element; Spring is used for moving lock force section 721 is formed directed force F, and driving moving lock latch hook portion 722 opens or clamps, hooks together, and this is an operating principle of having quoted clip, referring to Fig. 4;
The said lock portion 71 integrally formed lock buck plates 710 and lock hook portions 7101 that can coincide with the terraced frame of main ladder or secondary ladder; This lock hook portion 7101 is used for hooking together each other with moving lock latch hook portion 722 coupling; Thus; Lock portion is installed on main ladder or the secondary ladder, referring to Fig. 4 by fixture through the lock buck plate;
Further; Be positioned between moving lock latch hook portion 722 and the moving lock force section 721 the moving lock pivot hole above form moving lock protrusion 723; So that the axle center of moving lock pivot hole 7234 and moving lock latch hook portion and moving lock force section are basically on same horizontal line L; But the angle of these setting limited lock latch hook portion 722 perks is in preset range, referring to Fig. 4;
Said lock portion is one-body molded, and the lock buck plate of lock portion has vertical each other lock first fitting surface 710a and the lock second fitting surface 710b; The lock first fitting surface 710a can coincide with the terraced frame first fitting face 1a of main ladder frame or secondary terraced frame, the lock second fitting surface 710b with can coincide with the terraced frame second fitting face 1b of main ladder frame or secondary terraced frame; The terraced frame first fitting face 1a of this ladder frame is adjacent with the terraced frame second fitting face 1b and vertical each other; The second fitting surface 710b along the lock buck plate stretches out integrally formed lock hook portion 7101, referring to Fig. 5;
This lock hook portion 7101 has fixed lock hook groove inclined-plane 71011; Form the fixed lock hook groove 7100 that satisfies preset angle between the first fitting surface 710a of this fixed lock hook groove inclined-plane and lock buck plate; This fixed lock hook groove is used to hold moving lock latch hook termination 72210, the preset angle of the preset angle of fixed lock hook groove and moving lock latch hook termination ' quite, to form the contact surface that fixed lock hook groove and moving lock latch hook termination match; Thereby reach the safe effect that hooks together, referring to Fig. 2;
This fixed lock hook groove inclined-plane 71011 forms the fixed lock hook end 71013 of satisfying preset angle β with the end face 71012 of lock hook portion; The preset angle β of this fixed lock hook end and the preset angle β ' of moveable lock hook groove are suitable; Forming the contact surface that fixed lock hook end and moveable lock hook groove match, thereby reach the safe effect that hooks together; Extending upward end face 71012 with hook portion along the lock second fitting surface 710b of lock buck plate crosses and forms the stupefied limit of lock portion 71014; The stupefied limit of said lock portion is the stupefied limit of circular arc; The stupefied limit of this lock portion is used to hold the moving lock sliding bevel 72214 of moveable lock hook end, referring to Fig. 2, Fig. 4;
The stupefied limit of the lock of lock hook portion portion 71014 considers when the major and minor terraced frame of ladder closes up with the configuration of the moving lock sliding bevel 72214 of moveable lock hook end especially; Promote major and minor ladder; Make the moving lock sliding bevel 72214 of moving lock latch hook portion collide the stupefied limit of the lock portion 71014 of lock hook portion, the stupefied limit of lock portion forms active force to the moving lock sliding bevel, and the active force that impels moving lock portion to overcome spring clockwise rotates around pivot 74; Referring to Fig. 5; Therefore, close up major and minor ladder the time need not manpower special to moving lock force section 721 application of forces, can realize locking efficiently.
The moving lock latch hook portion 722 of said moving lock portion 72 is made up of moving lock hook portion 7221 and moving lock latch hook neck 7220; Form the hook-type hollow out in the middle of the moving lock hook portion of said moving lock latch hook portion and the moving lock latch hook neck; Not only save material thus; Can make simultaneously moving lock hook portion 7221 and moving lock latch hook neck 7220 form certain elasticity, referring to Fig. 5;
This moving lock hook portion 7221 is used for combining with lock hook portion 7101 couplings; This moving lock hook portion has moveable lock hook groove inclined-plane 72211; Form the moveable lock hook groove 72213 that satisfies preset angle β ' (referring to Fig. 2) between this hook groove inclined-plane and the moving lock latch hook neck 7220; This moveable lock hook groove is used to hold fixed lock hook end 71013, and the preset angle β ' of moveable lock hook groove is suitable with the preset angle β of fixed lock hook end, to form the contact surface that moveable lock hook groove and fixed lock hook end match; Thereby reach the safe effect that hooks together, referring to Fig. 5;
Moveable lock hook end 7221 has moveable lock hook groove inclined-plane 72211 and moving lock sliding bevel 72214; Form moving lock hook portion end face 72212 between moveable lock hook groove inclined-plane 72211 and the moving lock sliding bevel 72214; Moving lock hook portion end face 72212 forms with moveable lock hook groove inclined-plane 72211 and satisfies preset angle ' the moving lock latch hook termination 72210 of (referring to Fig. 2); The preset angle of this moving lock latch hook termination ' suitable with the preset angle of fixed lock hook groove 7100; Forming the contact surface that moving lock latch hook termination and fixed lock hook groove match, thereby reach the safe effect that hooks together, referring to Fig. 5;
Further, moving lock hook portion end face 72212 is a horizontal plane basically, thereby the horizontal line L at moving lock hook portion end face and moving lock latch hook portion, place, moving lock force section is parallel to each other; Thus, can guarantee the entire normalization property of terraced frame locking element, also effectively improve the safety of element;
Said movable lock base part 70 has the pedestal buck plate 700 that can coincide with the terraced frame of secondary ladder or main ladder, and this pedestal buck plate has vertical each other pedestal first fitting surface 700a and the pedestal second fitting surface 700b;
The terraced frame first fitting face 2a of pedestal first fitting surface and secondary terraced frame or main ladder frame coincide; The terraced frame second fitting face 2b of pedestal second fitting surface and secondary terraced frame or main ladder frame coincide;
First pivot assembling 701a and the assembling of second pivot 701b that picks up the ears that picks up the ears is set on the said pedestal first fitting surface 700a; Be to stretch out and the pedestal ear wall portion 7001 that forms between the assembling of this first pivot is picked up the ears and the assembling of second pivot is picked up the ears along the pedestal second fitting surface 700b; This pedestal ear wall portion and first pivot assembling pick up the ears chamber of the integrally formed putting spring of 701b of 701a and the assembling of second pivot of picking up the ears; Be called spring installation portion 7001, referring to Fig. 4, Fig. 5, Fig. 6; Said pedestal ear wall portion 7001 has the pedestal ear wall portion top 70011 of satisfying preset height, and this pedestal ear wall portion top is responsible for " bowing " degree of moving lock latch hook portion 722 is formed restriction; When spring during in release conditions, moving lock force section 721 receives spring action, and moving lock portion integral body is bowed by revolving force effect impelling moving lock latch hook portion counterclockwise, and pedestal ear wall portion end face can prevent effectively that Stop-motion lock latch hook portion " bows " heartily; Can guarantee further that thus the stupefied limit of lock portion 71014 can form effectively slip along moving lock sliding bevel 72214;
Said spring 75 is by the spring spire 752 on the ability suit pivot and first exit 751 and second exit 750 of spring spire; This first exit 751 is used to replace moving lock force section 721; Second exit is embedded in the spring installation portion, receives replacing of the pedestal first fitting surface 700a, and first exit of said spring and second exit are the opposite tension force of active force; Form a kind of torsion spring structure; Said spring is used to act between moving lock force section and pedestal first fitting surface, makes moving lock form twisting resistance, referring to Fig. 4;
Further; Said spring 75 has two spring spires that structure is identical; The i.e. first spring spire 752a and the second spring spire 752b; Integrally formed exit changeover portion 751c between first exit 751a of the first spring spire and the first exit 751b of the second spring spire, thus, first exit of first spring spire formation " ㄇ " the shape structure that links to each other with first exit of the second spring spire and the exit changeover portion one between the two; Can make moving lock form more strong twisting resistance, effectively strengthen the clamping dynamics; The spring of this structure can obtain bigger twisting resistance, referring to Fig. 4 under equal materials situation;
Said first pivot assembling picks up the ears to have the upwards flange 7011a of protuberance, and second assembling is picked up the ears identical with the first pivot assembling structure, has the upwards flange 7011b of protuberance equally, and this flange plays position-limiting action to spring, referring to Fig. 4;
Referring to shown in Figure 5: apply masterpiece and be used for moving lock force section 721, moving lock latch hook portion 722 overcomes the elastic force of spring 75, makes moving lock portion break away from the constraint of lock portion.Keep acting on the pressure F1 (see figure 2) of moving lock force section 721, spur secondary terraced frame 2, major and minor terraced frame is separated, this moment, moving lock latch hook portion broke away from lock fully, was unlocking condition.The effect of pedestal ear wall portion forms restriction to " bowing " degree of moving lock latch hook portion;
Referring to shown in Figure 6: locking state: moving lock force section 721 is under the counter clockwise direction elastic force effect of spring 75, and moving lock latch hook portion 722 is locked at lock portion.
When major and minor terraced frame separates; The component of ladder frame lock are under the free state that does not stress; The secondary terraced frame 2 that promotion has moving lock portion closes up to 1 direction of the main ladder frame with lock portion; When the moving lock sliding bevel 72214 of moving lock latch hook portion collided the stupefied limit of the lock portion 71014 of lock hook portion, the stupefied limit of lock portion formed active force f1 (see figure 2) to the moving lock sliding bevel; The stupefied limit of lock portion clockwise rotates around pivot 74 along the active force that active force in the moving lock sliding bevel sliding process makes moving lock portion overcome spring; When portion does not contact with the moving lock sliding bevel up to the stupefied limit of lock; The stupefied limit of lock portion has just disappeared to the active force f1 of moving lock sliding bevel; Active force in the spring reset process is in moving lock force section 721, and the position is gone in fixed lock hook groove 7100 in the moving lock latch hook termination 72210 of moving lock latch hook portion, and be locking state this moment.
After the preferred embodiment that specifies, be familiar with this technological personage and can clearly understand, do not break away from following claim with spiritual under can carry out various variations and modification, and the present invention also is not subject to the embodiment of the embodiment that lifts in the manual.
Claims (14)
1. the terraced frame of a ladder is locked; It is characterized in that; Said terraced frame lock (7) is made up of moving lock portion (72), lock portion (71) and movable lock base part (70); Moving lock portion has the moving lock latch hook portion (722) that can hook together with the lock hook portion, and lock portion has the lock hook portion (7101) that can hook together with moving lock latch hook portion;
Described integrally formed moving lock latch hook portion of moving lock portion (722) and moving lock force section (721) form moving lock pivot hole (7234) between moving lock latch hook portion and moving lock force section; Spring (75) is by being pivotally mounted between movable lock base part (70) and the moving lock portion (72);
The axle center of said moving lock pivot hole (7234) and moving lock latch hook portion and moving lock force section on same horizon or the axle center of moving lock pivot hole (7234) near the same horizon at moving lock latch hook portion and moving lock force section place.
2. the terraced frame of ladder lock according to claim 1 is characterized in that integrally formed lock buck plate (710) and the lock hook portion (7101) that can coincide with the terraced frame of main ladder or secondary ladder of said lock portion (71); The lock buck plate of said lock portion has lock first fitting surface (710a) and lock second fitting surface (710b); Second fitting surface (710b) along the lock buck plate stretches out formation lock hook portion (7101).
3. lock like the terraced frame of the said ladder of claim 2; It is characterized in that; Said lock hook portion (7101) has fixed lock hook groove inclined-plane (71011), forms the fixed lock hook groove (7100) that satisfies preset angle between first fitting surface (710a) of this fixed lock hook groove inclined-plane and lock buck plate; This fixed lock hook groove inclined-plane (71011) forms the fixed lock hook end (71013) of satisfying preset angle with the end face (71012) of lock hook portion.
4. lock like the terraced frame of the said ladder of claim 3; It is characterized in that; The moving lock latch hook portion (722) of said moving lock portion (72) is made up of moving lock hook portion (7221) and moving lock latch hook neck (7220); This moving lock hook portion (7221) has moveable lock hook groove inclined-plane (72211); Form the moveable lock hook groove (72213) that satisfies preset angle between this hook groove inclined-plane and the moving lock latch hook neck (7220); The moving lock hook portion (7221) of said moving lock portion has moveable lock hook groove inclined-plane (72211) and moving lock sliding bevel (72214), forms moving lock hook portion end face (72212) between moveable lock hook groove inclined-plane (72211) and the moving lock sliding bevel (72214), and moving lock hook portion end face (72212) forms the moving lock latch hook termination (72210) of satisfying preset angle with moveable lock hook groove inclined-plane (72211).
5. lock like the terraced frame of the said ladder of claim 4; It is characterized in that; Said lock portion extends upward end face (71012) with the lock hook portion along lock second fitting surface (710b) of lock buck plate and crosses and form lock stupefied limit portion (71014), and the stupefied limit of this lock portion can contact the moving lock sliding bevel (72214) of moving lock hook portion.
6. like the terraced frame lock of the said ladder of claim 5, it is characterized in that formation hook-type hollow out in the middle of the moving lock hook portion of said moving lock latch hook portion and the moving lock latch hook neck; The stupefied limit of said lock portion is the stupefied limit of circular arc.
7. lock like the terraced frame of the said ladder of claim 6; It is characterized in that; Said movable lock base part (70) has the pedestal buck plate (700) that can coincide with the terraced frame of secondary ladder or main ladder, and this pedestal buck plate has pedestal first fitting surface (700a) and pedestal second fitting surface (700b); Be provided with on said pedestal first fitting surface (700a) first pivot assembling pick up the ears (701a) assemble pick up the ears (701b) with second pivot; Between picking up the ears, this first, second pivot assembling forms the spring installation portion (7001) of putting spring; Said spring (75) have can suit spring spire (752) and first exit (751) and second exit (750) of spring spire on the pivot; This first exit (751) is used to replace moving lock force section (721); Second exit is embedded in the spring installation portion, receives replacing of pedestal first fitting surface (700a).
8. lock like the terraced frame of the said ladder of claim 7; It is characterized in that; Said spring (75) has two spring spires that structure is identical; The i.e. first spring spire (752a) and the second spring spire (752b), integrally formed exit changeover portion (751c) between first exit (751a) of the first spring spire and first exit (751b) of the second spring spire.
9. has ladder like each described terraced frame lock among the claim 1-6; Comprise main ladder (1) and secondary ladder (2); It is characterized in that; Ladder frame lock (7) is installed on main terraced frame and the secondary terraced frame, and first pivot assembling of said movable lock base part is picked up the ears, (7011a, 7011b) picked up the ears all have defining flange in the assembling of second pivot.
10. has ladder like claim 7 or 8 described terraced frame locks; Comprise main ladder (1) and secondary ladder (2); It is characterized in that; Ladder frame lock (7) is installed on main terraced frame and the secondary terraced frame, and first pivot assembling of said movable lock base part is picked up the ears, (7011a, 7011b) picked up the ears all have defining flange in the assembling of second pivot.
11. ladder as claimed in claim 9 is characterized in that, moving lock hook portion end face (72212) is parallel to each other with the horizon at moving lock latch hook portion, place, moving lock force section.
12. ladder as claimed in claim 10 is characterized in that, moving lock hook portion end face (72212) is parallel to each other with the horizon at moving lock latch hook portion, place, moving lock force section.
13. ladder as claimed in claim 11; It is characterized in that; Said movable lock base part (70) wherein first pivot assembling of pedestal first fitting surface (700a) pick up the ears (701a) assemble with second pivot and pick up the ears to have pedestal ear wall portion (7001) between (701b); Said pedestal ear wall portion has pedestal ear wall portion top (70011) that satisfies preset height, and this pedestal ear wall portion top is used for moving lock latch hook portion is formed restriction.
14. ladder as claimed in claim 12; It is characterized in that; The assembling of first pivot of said pedestal first fitting surface (700a) pick up the ears (701a) assemble with second pivot and pick up the ears to have pedestal ear wall portion (7001) between (701b); Said pedestal ear wall portion has pedestal ear wall portion top (70011) that satisfies preset height, and this pedestal ear wall portion top is used for moving lock latch hook portion is formed restriction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010215121XA CN101881132B (en) | 2010-07-01 | 2010-07-01 | Ladder frame lock and ladder thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010215121XA CN101881132B (en) | 2010-07-01 | 2010-07-01 | Ladder frame lock and ladder thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101881132A CN101881132A (en) | 2010-11-10 |
| CN101881132B true CN101881132B (en) | 2012-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010215121XA Active CN101881132B (en) | 2010-07-01 | 2010-07-01 | Ladder frame lock and ladder thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101881132B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6390238B1 (en) * | 1999-08-13 | 2002-05-21 | Cosco Management, Inc. | Foldable step stool with leg lock and handle |
| FR2832755A1 (en) * | 2001-11-26 | 2003-05-30 | Sevylor Internat | Safety ladder for above ground swimming pool has steps forming rotating element raised relative to fixed uprights, one of two inverted coupling hooks is mounted on deformable arm provided with gripping means |
| CN2622373Y (en) * | 2003-04-17 | 2004-06-30 | 陈经雄 | Telescopic ladder |
| CN2677575Y (en) * | 2004-01-12 | 2005-02-09 | 碧卡株式会社 | Two-purpse folding ladder |
| CN201695936U (en) * | 2010-07-01 | 2011-01-05 | 天津市金锚集团有限责任公司 | Modified ladder frame lock and ladder thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7104362B2 (en) * | 2003-08-27 | 2006-09-12 | Cosco Management, Inc. | Foldable step ladder with leg aligner and handle |
-
2010
- 2010-07-01 CN CN201010215121XA patent/CN101881132B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6390238B1 (en) * | 1999-08-13 | 2002-05-21 | Cosco Management, Inc. | Foldable step stool with leg lock and handle |
| FR2832755A1 (en) * | 2001-11-26 | 2003-05-30 | Sevylor Internat | Safety ladder for above ground swimming pool has steps forming rotating element raised relative to fixed uprights, one of two inverted coupling hooks is mounted on deformable arm provided with gripping means |
| CN2622373Y (en) * | 2003-04-17 | 2004-06-30 | 陈经雄 | Telescopic ladder |
| CN2677575Y (en) * | 2004-01-12 | 2005-02-09 | 碧卡株式会社 | Two-purpse folding ladder |
| CN201695936U (en) * | 2010-07-01 | 2011-01-05 | 天津市金锚集团有限责任公司 | Modified ladder frame lock and ladder thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101881132A (en) | 2010-11-10 |
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Effective date of registration: 20180112 Address after: 300000 Beichen District, Tianjin City, zenzhuang Town, jinwai Road East 980 Patentee after: Tianjin Jinmao Home Products Co., Ltd. Address before: 300402 Beichen District, Tianjin City, zenzhuang Town, jinwai Road East 980 Patentee before: Jinmao Group Co., Ltd., Tianjin City |
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