CN1079655C

CN1079655C - Three-pawl lock

Info

Publication number: CN1079655C
Application number: CN 99113438
Authority: CN
Inventors: 卞建政
Original assignee: Changzhou Lingtong Exhibition Products Co Ltd
Current assignee: Changzhou Lingtong Exhibition Products Co Ltd
Priority date: 1999-01-28
Filing date: 1999-01-28
Publication date: 2002-02-27
Anticipated expiration: 2019-01-28
Also published as: CN1225967A

Abstract

The present invention relates to a three-jaw lockset which is composed of a lock shell, a lock plate and an eccentric lock wheel, wherein two elongated slots extending form a middle part all through to a front end are arranged on the lock plate to form a left, a right and a middle plate tongues on the lock plate; the front ends of the plate tongues are provided with U-shaped bend hooks; the left and the right plate tongues are symmetrical. The elongated slots are slots with different width and are divided into a front, a middle and a back sections; the front and the back sections have the same width, and the middle section has larger width; thereby, in the three plate tongues, the front parts of the right and the left plate tongues are wider than the back parts, and the back part of the middle plate tongue is wider than the front part. The back part of the middle plate tongue is provided with a support leg which faces the front part; a tilted head of the support leg presses the bearing face of the inner side of the lock shell; the inclined planes of the three plate tongues are tightly stuck on an oblique bearing face in the front of the lock shell; the width of the oblique bearing face of the lock shell is larger than that of the inclined planes of the plate tongues.

Description

Connect lock

The present invention relates to a kind of connection lock that movable exhibition framework connects that is used for.This connection lock is used for the movable connection that puts on display framework as connector, belongs to exhibition apparatus.

Chinese patent 87206373U proposes a kind of connection lock that movable exhibition framework connects that is used for, name is called Lock with double notches, though this Lock with double notches has been done improvement to former tapered end, but the point that many deficiencies are still arranged after improving, as the separating tank between three plate tongues is straight trough, and the plate tongue structure is unreasonable, and the locality of spike is improper on the plate tongue, owing to stick up elastic force deficiency rearward, the supporting force of three plate tongues is not enough etc.

The present invention is the improvement to above-mentioned patented technology, and it is bigger to propose a kind of supporting force, and spike is locked towards rational connection.

Technical scheme of the present invention is: a kind of connection lock, by lock housing, jam plate, the eccentric lock wheel constitutes, there are two on the jam plate from the middle elongated slot that extends to front end always, and three plate tongues of two sides and centre about having on the formation jam plate, plate tongue front end is the U-shaped crotch, about two side plate tongue symmetries, elongated slot is not wide elongated slot, divide leading portion, three sections of stage casing and back segments, the two sections width in front and back equate that the stage casing width is big, thereby form in three plate tongues, two side plate tongues, anterior wide than the rear portion, the intermediate plate back of tongue is anterior wide, has spike at the rear of intermediate plate tongue, spike is towards the place ahead, the spike nose is pressed on the loading end of lock housing inboard, and the inclined-plane of three plate tongues is close on the oblique bearing surface in lock housing the place ahead, and the width of the oblique bearing surface of lock housing is greater than the width on plate tongue inclined-plane.

Because reasonable, thereby obtain three plate tongues that supporting force is big to the shaped design of three elongated slots, and the spike position, towards change, improved the bearing capacity of lockset, finish the invention task.

Fig. 1 is the lock housing embodiment that the present invention connects lock.

Fig. 2 is the vertical view of Fig. 1.

Fig. 3 is the A-A cutaway view of Fig. 2.

Fig. 4 is the jam plate embodiment that connects lock.

Fig. 5 is the vertical view of Fig. 4.

Fig. 6 is the overall construction drawing that connects lock.

Fig. 7 is the use structure chart that connects lock.

Be described in detail the present invention below in conjunction with accompanying drawing;

The present invention connects lock by lock housing (1), jam plate (2), eccentric lock wheel (3) constitutes, there are two on the jam plate (2) from the middle elongated slot that extends to front end always, and three plate tongues of two sides and centre about having on the formation jam plate, plate tongue front end is the U-shaped crotch, about two side plate tongue (21) (23) symmetries, elongated slot is not wide elongated slot, divide leading portion (41), stage casing (42) and (43) three sections of back segments, the two sections width in front and back equate, the stage casing width is big, thereby form in three plate tongues, two side plate tongues (21), (23) anterior wide than the rear portion, intermediate plate tongue (22) rear portion is anterior wide, have spike (24) at the rear of intermediate plate tongue, spike is towards the place ahead, and spike nose (241) is pressed on the inboard loading end (141) of lock housing (1), the inclined-plane of three plate tongues (231), (211), (221) be close on the oblique bearing surface (131) (121) (111) in lock housing (1) the place ahead, the width of the oblique bearing surface of lock housing is greater than the width on plate tongue inclined-plane.(Fig. 1,2,3,4,5,6)

Lock housing (1) three the oblique bearing surfaces in the place ahead (111), (121), (131) have the part of linking to each other (101) to link to each other, and form whole.

Root two sides of spike (24) have aperture (25).

The rear end of plate tongue (2) bends to U-shaped semi-ring (26).The working face (361) of the end face of U-shaped semi-ring (261) and eccentric lock wheel is fitted, when rotating the eccentric lock wheel as the active force face of mobile jam plate (2).

When connecting the lock assembling, earlier jam plate (2) is inserted by lock housing (1) rear end cavity, after the insertion, be about to eccentric lock wheel (3) and snap in vestibule (53), this the time make the vestibule (53) of cavity (5) and lock housing (1) on the jam plate (2) be in same position, jam plate (2) can be fixed in the lock housing (1), form the connection lock that constitutes one by lock housing (1), jam plate (2), eccentric lock wheel (3).

During use, push eccentric wheel (3) and be about to connect lock and place in the cavity of a special-shaped hollow pole stock (6), the fixedly hole (61) of eccentric lock wheel (3) is arranged on pole stock (6) face, thus the fixedly connected position that is locked on the pole stock (6).Rotation eccentric lock wheel, this the time plate tongue inclined-plane (231) (221) (211) along oblique bearing surface (131) (121) (111) slippage backward of lock housing (1), move behind the spike simultaneously, three U-shaped crotches to two sides separately, two lateral bending hook direction unanimities, middle crotch opens to other direction, thereby fixedlys connected with special pipe (7) formation.Fig. 7

Because a series of technological improvement of the present invention makes the present invention connect lock and seems practical, reliable, syndeton intensity height connects the exhibition framework for carrying intensity height that the back forms.

Claims

1, a kind of connection lock that is used for the connection of movable exhibition framework, by lock housing (1), jam plate (2), eccentric lock wheel (3) constitutes, there are two on the jam plate (2) from the middle elongated slot that extends to front end always, and a left side is arranged on the formation jam plate, right two sides and middle three plate tongues, plate tongue front end is the U-shaped crotch, about two side plate tongue (21) (23) symmetries, elongated slot is not wide elongated slot, divide leading portion (41), stage casing (42) and (43) three sections of back segments, the two sections width in front and back equate, the stage casing width is big, thereby form in three plate tongues, two side plate tongues (21), (23) anterior wide than the rear portion, intermediate plate tongue (22) rear portion is anterior wide, has spike (24) at the rear of intermediate plate tongue, spike is towards the place ahead, spike nose (241) is pressed on the inboard loading end (141) of lock housing (1), the inclined-plane of three plate tongues (231), (211), (221) be close on the oblique bearing surface (131) (121) (111) in lock housing (1) the place ahead, the width of the oblique bearing surface of lock housing is greater than the width on plate tongue inclined-plane.

2,, it is characterized in that lock housing (1) three the oblique bearing surfaces in the place ahead (111), (121), (131) have the part of linking to each other (101) to form whole shape by the described connection lock of claim 1.

3, by the described connection lock of claim 1, it is characterized in that root two sides of spike (24) have aperture (25).

4, by the described connection lock of claim 1, it is characterized in that the rear end of plate tongue (2) bends to U-shaped semi-ring (26).

5, by claim 1,4 described connections lock, it is characterized in that the applying of end face (261) with the working face (361) of eccentric lock wheel of U-shaped semi-ring, when rotating the eccentric lock wheel as the active force face of mobile jam plate (2).