CN2752419Y

CN2752419Y - Mental ladder expansion foot locking and adjusting mechanism

Info

Publication number: CN2752419Y
Application number: CN 200420109368
Authority: CN
Inventors: 谢小燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-30
Filing date: 2004-11-30
Publication date: 2006-01-18
Anticipated expiration: 2014-11-30

Abstract

The utility model relates to a metal ladder telescopic foot locking and adjusting mechanism. The utility model is characterized in that the metal ladder expansion foot locking and adjusting mechanism is formed by that a gear rack [3] fixedly arranged at the lateral part of a telescopic foot [2] and a buckling pawl clutch [16] correspondingly arranged on a fixed foot [1] are matched; the buckling pawl clutch [16] is mainly composed of a buckling pawl [4] and a torsion spring [5]; the buckling pawl [4] forms a lever structure, and the middle part of the buckling pawl is supported on the fixed foot [1] in a rotating mode; the torsion spring [5] is sheathed on a shaft and acts between the fixed foot [1] and the buckling pawl [4] to force the head section of the buckling pawl [4] and the gear rack [3]to be contacted; the head section of the buckling pawl [4] is provided with a gear head [7] engaged with the rack gear [3], and the tail section is provided with a pawl handle [9]. The utility model has the advantages of safe locking of the telescopic foot of a metal ladder, convenient regulation and capability of realizing micro regulation.

Description

Wire ladder telescopic leg lock adjustment mechanism

Technical field

The utility model relates to the structure of wire ladder, is specifically related to the telescopic leg lock adjustment mechanism in a kind of wire ladder.

Background technology

Wire ladder be people live at home and construction and installation in common tool, people usually finish the operation of climbing to a higher point by ladder.Traditional ladder generally has two types, and promptly yi shaped ladder and double ladder no matter be yi shaped ladder or double ladder, all can only be erected on the level land.For the functional performance and the scope of application that improve ladder, people improve traditional ladder, and Chinese patent is called " Multifunction safety ladder " in the name of bulletin on January 30th, 2002, and the patent No. is 01235053.2 utility model patent.Mention the situation that the adjustable for height telescopic leg of utilization adapts to the ground injustice in this patent, its telescopic leg is installed in the lower end of female ladder, and slip cap is contained in the fixing feet, adopt the lock pin nail to be connected between the fixing feet of telescopic leg and female ladder, on the fixing feet side of telescopic leg and female ladder, all offer porose, hole on telescopic leg and the fixing feet is aligned, and the insertion lock pin is followed closely and is located, and realizes the adjusting of foot of ladder height with this.This technical scheme can be used on slope, step and the broken terrain ladder, but, the location structure of its telescopic leg and fixing feet has following deficiency: 1, regulation stall is on the low side, how much determining of the gear that telescopic leg is regulated in this scheme by distance between perforate and perforate quantity, between its Kong Yukong must between be separated with certain distance, caused the gear of adjusting on the low side, can not realize fine setting, ladder still can occur in actual the use and set up jiggly phenomenon; 2, troublesome poeration needs during positioning action the hole on the hole on the telescopic leg and the female ladder is aligned, and inserts the lock pin nail then, and its whole process one man operation gets up comparatively difficult, and is not only time-consuming but also require great effort, and inconvenient.

Summary of the invention

The utility model provides a kind of telescopic leg lock adjustment mechanism of wire ladder, its objective is that the telescopic leg locking of wire ladder is reliable, easy to adjust, and can realize trace adjustment.

For achieving the above object, the technical solution adopted in the utility model is: a kind of wire ladder telescopic leg lock adjustment mechanism, match by a corresponding button pawl clutch that is installed on the fixing feet of tooth bar that is fixedly arranged on the telescopic leg sidepiece and to constitute with one, button pawl clutch mainly is made of button pawl and torsion spring, the button pawl is a lever construction, the middle part rotating support is on fixing feet, torsion spring set is on axle, and act between fixing feet and the button pawl, force button pawl head to contact with tooth bar, button pawl head is provided with the tooth head with the tooth bar engagement, and afterbody is a latch spoon.

The related content and the change interpretation of technique scheme are as follows:

1, in the such scheme, described fixing feet is meant the feet on female ladder, and telescopic leg is meant that slip cap is contained in the inner or outside height-adjustable movable pin in fixing feet lower end.

2, in the such scheme,, make and detain the pawl head and contact with tooth bar and can realize in the mode that the sidepiece of fixing feet is offered hole or groove because telescopic leg and fixing feet are slip socket relation.

3, in the such scheme, in order to make structure design and installation more reasonable, described button pawl clutch is provided with pedestal, and the button pawl is rotatably installed on the pedestal, and pedestal is fixed on the fixing feet; Pedestal is provided with panel, and an operation window is arranged on the panel, and the latch spoon of button pawl is arranged in operation window, and closely leans on the supporting surface of operation window one side under the torsion spring effect.

4, in the such scheme,, on panel, be provided with and renovate, renovate towards panel one side and be provided with clamping block, renovate that clamping block drops in the operation window under the state of covering, and stop latch spoon backward rotation path in order to increase the reliability of locking.

5, in the such scheme, in order effectively to utilize the space and to increase female terraced structural strength, described pedestal is fixed on the corner of female terraced fixing feet and first order crosspiece.

The utility model operating principle is: the utility model utilization be fixed on the telescopic leg tooth bar be fixed on fixing feet on button pawl clutch with match, realize the location between telescopic leg and fixing feet; When location, the tooth head of button pawl is meshed with tooth on the tooth bar in the button pawl clutch, and the latch spoon of button pawl has propped up on the supporting surface of operation window, has guaranteed the reliability of locating, and when being subjected to downward gravity, telescopic leg can not become flexible yet.When release, the operator upwards presses the latch spoon of button pawl, overcomes torsion spring power and will detain the pawl switching, and the tooth head and the tooth bar of button pawl are separated, and at this moment, can regulate the height of telescopic leg.When adjusting put in place, the operator unclamped the latch spoon of button pawl, and the button pawl resets under the effect of torsion spring power, and its tooth head is meshed with tooth on the tooth bar again, reaches positioning action.The utility model also is provided with one and renovates on the panel of button pawl clutch, be provided with clamping block renovating on panel one side, this renovates the inside of blocking button pawl clutch except playing, and makes the bright and clean effect attractive in appearance of its appearance, has most importantly played locking action with clamping block; When highly adjusting puts in place, after finishing with button pawl location, the operator will renovate and build, the backward rotation path when its clamping block that covers just in time stops the release of button pawl, make the also not release voluntarily when telescopic leg is pulled out by external force of this lock adjustment mechanism, further increased the reliability of locking.

Because the technique scheme utilization, the utility model compared with prior art has following advantage:

1, because the utility model with the tooth bar location of matching with button pawl clutch, can be realized the adjusting of trace, when ladder stay is located at broken terrain, can pass through to finely tune the height of each pin of ladder, guarantee the stationarity of setting up.

2, since the utility model with tooth bar with detain the pawl clutch incompatible location that matches, and be provided with the supporting surface of operation window and the clamping block of renovating, the path of button pawl its positive and negative rotation release behind the location all is blocked, its reliability of positioning improves greatly, no matter telescopic leg is subjected to pulling force or thrust, this mechanism is not release voluntarily.

3, since the utility model with tooth bar with detain the pawl clutch incompatible location that matches, the button pawl by the torsion spring rotational support on fixing feet, when regulating operation, the operator only needs with the latch spoon of pinning the button pawl on the other hand, with the height of the whole telescopic leg of another hand adjustment, when adjusting to the right place, unclamp latch spoon, the button pawl promptly can automatically reset and finish the location, and the operator will renovate to build again and get final product, this operating process is very convenient, single can finishing.

Description of drawings

Accompanying drawing 1 is for adopting the wire ladder stereogram of the utility model mechanism;

Accompanying drawing 2 is the utility model structure sectional view (), and among the figure, the button pawl is in engagement;

Accompanying drawing 3 is the utility model structure sectional view (two), and among the figure, the button pawl is in released state;

Accompanying drawing 4 is for buckleing the front view of pawl clutch;

Accompanying drawing 5 is the left view of accompanying drawing 4.

In the above accompanying drawing: 1, fixing feet; 2, telescopic leg; 3, tooth bar; 4, button pawl; 5, torsion spring; 6, pedestal; 7, tooth head 8, carbine; 9, latch spoon; 10, operation window; 11, clamping block; 12, renovate; 13, grab; 14, panel 15, supporting surface 16, buckle the pawl clutch; 17, first order crosspiece.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described:

Embodiment: shown in accompanying drawing 2～accompanying drawing 5, a kind of wire ladder telescopic leg lock adjustment mechanism, match by a corresponding button pawl clutch 16 that is installed on the fixing feet 1 of tooth bar 3 that is fixedly arranged on telescopic leg 2 sidepieces and to constitute with one, button pawl clutch 16 is by button pawl 4, torsion spring 5 and pedestal 6 constitute, pedestal 6 is installed and is connected on the fixing feet 1, button pawl 4 is a lever construction, the axle rotating support is passed through on pedestal 6 in the middle part, torsion spring 5 is enclosed within on the axle, and act between pedestal 6 and the button pawl 4, force button pawl 4 heads to contact with tooth bar 3, button pawl 4 heads are provided with the tooth head 7 with tooth bar 3 engagements, and afterbody is a latch spoon 9.And pedestal 6 is provided with panel 14, and an operation window 10 is arranged on the panel 14, and the latch spoon 9 of button pawl 4 is arranged in operation window 10, and closely leans on the supporting surface 15 of operation window 10 1 sides under torsion spring 5 effects; Also be provided with on the panel 14 and renovate 12, renovate 12 one sides and be provided with clamping block 11 towards panel 14, renovate 12 under the state of covering clamping block 11 drop in the operation window 10, and stop latch spoon 9 backward rotation paths.

Shown in accompanying drawing 1, this lock adjustment mechanism is used on the double ladder, pedestal 6 can be fixed on the corner of female terraced fixing feet 1 and first order crosspiece 17, make this lock adjustment mechanism except that playing locking action, also play the effect that connects crosspiece, effectively utilized the space and strengthened the structural strength of female ladder.

Claims

1, a kind of wire ladder telescopic leg lock adjustment mechanism, it is characterized in that: by a corresponding button pawl clutch [16] that is installed on the fixing feet [1] of tooth bar [3] that is fixedly arranged on telescopic leg [2] the sidepiece formation that matches with one, button pawl clutch [16] mainly is made of button pawl [4] and torsion spring [5], button pawl [4] is a lever construction, the middle part rotating support is on fixing feet [1], torsion spring [5] is enclosed within on the axle, and act between fixing feet [1] and the button pawl [4], force button pawl [4] head to contact with tooth bar [3], button pawl [4] head is provided with the tooth head [7] with tooth bar [3] engagement, and afterbody is latch spoon [9].

2, wire ladder telescopic leg lock adjustment according to claim 1 mechanism, it is characterized in that: described button pawl clutch [16] is provided with pedestal [6], and button pawl [4] is rotatably installed on the pedestal [6], and pedestal [6] is fixed on the fixing feet [1]; Pedestal [6] is provided with panel [14], and an operation window [10] is arranged on the panel [14], and the latch spoon [9] of button pawl [4] is arranged in operation window [10], and closely leans on the supporting surface [15] of operation window [10] one sides under torsion spring [5] effect.

3, wire ladder telescopic leg lock adjustment according to claim 2 mechanism, it is characterized in that: described panel [14] is provided with renovates [12], renovate [12] and be provided with clamping block [11] towards panel [14] one side, renovate [12] clamping block [11] under the state of covering and drop in the operation window [10], and stop latch spoon [9] backward rotation path.

4, according to claim 2 or 3 described wire ladder telescopic leg lock adjustment mechanisms, it is characterized in that: described pedestal [6] is fixed on the corner of female terraced fixing feet [1] and first order crosspiece [17].