CN2734916Y

CN2734916Y - Door lock for outdoor SMC box

Info

Publication number: CN2734916Y
Application number: CN 200420088642
Authority: CN
Inventors: 刘养弟; 刘卫东
Original assignee: Shenzhen Sun & Sea Telecomm Co
Current assignee: Shenzhen Sunsea Telecommunications Co Ltd
Priority date: 2004-09-21
Filing date: 2004-09-21
Publication date: 2005-10-19
Anticipated expiration: 2014-09-21

Abstract

The utility model relates to a door lock for an outdoor SMC box in order to solve the problems that a prior door lock adopts a circular plate to protect a keyhole with inconvenience and fingers are easy to be scratched, etc. The inner diameter of a keyhole is provided with internal threads and a protecting plug which is provided with corresponding external threads is adopted; the protecting plug can be screwed inside the keyhole and can tightly seal the keyhole. Wherein, the outer end of the protecting plug is designed with a triangular groove; accordingly, one end of the key is in the shape of triangle and can be inserted into the triangle groove of the protecting plug for screwing the protecting plug to rotate. In addition, a locking plate is embedded with a nut, and the keyhole with the internal screw thread is formed by the inner circular hole of the nut. The door lock of the utility model removes stainless steel circular plates existing in prior art, and the door lock has the advantages of beautiful figure, convenient assembly and disassembly. The key can be used for screwing the protecting plug, and users doesn't need to take with a screw driver.

Description

The door lock of outdoor SMC casing

Technical field

The utility model relates to outdoor SMC (the sheet molding compound is commonly called as glass fiber reinforced plastic) casing, more particularly, relates to the door lock of outdoor SMC casing.

Background technology

Because the residing environment of outdoor SMC casing is more abominable, therefore must have well dustproof, waterproof, vandal-proof function, and its door lock is as key component, be again the part of easy destruction under attack, so its preventing destructing performance is particularly important.As shown in Figure 1, in the outer SMC casing of conventional chamber, the position that keeps left, the middle part that door lock is contained in door-plate 10 outsides, this door lock is made up of lock collar 1, the lock core that is connected with this lock collar 1 and the dead bolt parts such as (not drawing in the drawings) that are contained in the door-plate inboard, when the insertion key is opened lock core, lock collar could be rotated, and drives inner dead bolt rotation, thereby realizes unblanking purpose.

In order to prevent keyhole 4 to be stopped up by boring or mischief-making human foreign matter, on lock collar 1, be fixed with a stainless steel plectane 3 with upper and lower two screws 2, by this plectane 3 keyhole 4 is covered to reach the purpose of protection.This structure is not only attractive in appearance, it is bothersome time-consuming to install, and cumbersome when unblanking, and needs twist screw 2 with screwdriver earlier, takes off plectane 3, could insert key unlocking then.In actual the use, some staff can dislike aforesaid operations process trouble, often only twist top that screw, forward plectane 3 to position shown in Figure 2 so that unblank again, though this moment, key can normally be inserted in the keyhole 4, but need rotate whole lock collar 1 with bigger power during owing to open the door,, then very easily scratch operating personnel's finger if the burr around the stainless steel plectane 3 is unclean by polishing.On the other hand, because the bottom of lock collar 1 has been covered a part by plectane 3, in the whole lock collar 1 of rotation the situation that inconvenience is exerted oneself can appear.

The utility model content

At the defective on the prior art, in the door lock of existing outdoor SMC casing to be solved in the utility model because not attractive in appearance, the operation inconvenience of adopting that plectane comes that the protection key keyhole brings and easily scratch problem such as hand.

The technical scheme that its technical problem that solves the utility model adopts is: the door lock of constructing a kind of outdoor SMC casing, comprise lock collar that is contained in the door-plate outside and lock core and the dead bolt that is contained in the door-plate inboard, interconnect between described lock collar, lock core and the dead bolt, on described lock collar, be provided with the keyhole that inserts for key; Wherein also comprise a protection plug; Be provided with internal thread on the internal diameter of described keyhole, be provided with corresponding external screw thread on the external diameter of described protection plug, by cooperating between described external screw thread and the internal thread, described protection plug can be screwedly mounted in the described keyhole and described keyhole is sealed up.

In the utility model, be preferably in triangular groove of outer end design of described protection plug; Correspondingly, an end of described key is preferably triangle, can insert in the triangular groove of described protection plug, rotates thereby turn described protection plug.

In the utility model, can in described lock collar, inlay a nut, constitute described keyhole by the interior circular hole of described nut, and constitute described internal thread by the screw thread on the circular hole in the described nut.

By such scheme as can be known, door lock of the present utility model has saved stainless steel plectane of the prior art, its external form is more attractive in appearance, installation and removal are with very convenient, do not have the problem that is scratched finger by the burr at plectane edge again, can not occur plectane yet the bottom of lock collar is covered a part, the problem of the more difficult application of force.And an available end is that leg-of-mutton key replaces cross screwdriver, will protect plug to be screwed in the keyhole of back-outing, and saved the trouble of band screwdriver.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing and example, in the accompanying drawing:

Fig. 1 is the door latch structure schematic diagram of existing outdoor SMC casing;

Fig. 2 is the schematic diagram of plectane shown in Fig. 1 after the screw threads turnback of its underpart;

Fig. 3 is the structural representation of door lock in preferred embodiment of the utility model;

Fig. 4 is the schematic diagram behind the protection plug of packing in screwed hole shown in Figure 3.

The specific embodiment

A preferred embodiment of the present utility model as shown in Figure 3 and Figure 4.Wherein, door-plate 10 is glass fiber reinforced plastic or other nonmetal parts, and lock collar 1 is a plastic parts; Central authorities in lock collar 1 are inlaid with a copper nut 5, and the interior circular hole of this nut 5 constitutes keyhole, is provided with internal thread 8 on the internal diameter of this keyhole; As shown in Figure 4, a copper protection plug 6 is housed in nut, the external diameter of this protection plug is provided with the external screw thread that cooperates with internal thread 8, and the protection plug is to be screwedly mounted in the nut 5 by the mode that screw cooperates with nut; In the design of the end of protection plug a triangular groove 7 is arranged.

As seen, saved the stainless steel plectane 3 in the conventional door lock in this example, its external form is more attractive in appearance, mount and dismount all very convenient, do not have the problem that is scratched finger by the burr at plectane edge again, can not occur plectane yet the bottom of lock collar is covered a part, be difficult to the situation of the application of force when rotating lock collar.In addition, because screwed hole 8 is a multiple thread, being screwed into of protection plug 6 back-outed very rapid; And, can also be that leg-of-mutton key replaces cross screwdriver to be screwed into or the protection plug of back-outing with an end, as shown in Figure 3, wherein the rear end of key 13 is triangle (not drawing in the drawings), thereby has saved the trouble that needs with a cross screwdriver.

During concrete enforcement, the external dimensions of nut 5 is preferably six prismatics, and can with lock collar 1 once injection moulding, thereby be embedded in firmly in the lock collar, in lock collar, rotate greatly because of stressed to prevent it.In addition, also can directly on the internal diameter of the circular mounting hole of lock collar, internal thread be set, and will protect plug directly to be contained in the installing hole internal thread, thereby can save nut 5.

Claims

1, a kind of door lock of outdoor SMC casing comprises lock collar (1) that is contained in door-plate (10) outside and lock core and the dead bolt that is contained in the door-plate inboard, interconnects between described lock collar, lock core and the dead bolt, is provided with the keyhole (4) that inserts for key on described lock collar; It is characterized in that,

Also comprise a protection plug (6); On the internal diameter of described keyhole (4), be provided with internal thread, on the external diameter of described protection plug, be provided with corresponding external screw thread; Protection plug can be screwedly mounted in the described keyhole, and closely cooperating between the internal thread by described keyhole and the external screw thread of protection plug reaches the purpose of protecting lock core.

2, the door lock of outdoor SMC casing according to claim 1 is characterized in that, also is provided with triangular groove (7) in the outer end of described protection plug.

3, the door lock of outdoor SMC casing according to claim 2 is characterized in that, an end of described key is a triangle, can insert in the triangular groove of described protection plug, rotates thereby turn described protection plug.

4, according to the door lock of each described outdoor SMC casing among the claim 1-3, it is characterized in that, be embedded with a nut (5) in described lock collar, the interior circular hole of described nut constitutes described keyhole, and the screw thread in the described nut on the circular hole then constitutes described internal thread.