CN202731445U - Improved anti-theft lock - Google Patents

Abstract

The utility model relates to an improved anti-theft lock comprising a lock shell, a lock core, a key, a first locking mechanism on the left-right direction and a second locking mechanism, wherein the first locking mechanism is composed of a lock core marble, a lock shell marble, a marble spring and a sealing sleeve, and the second locking mechanism is composed of a lock pin, an arc-shaped limiting groove and a telescopic part arranged outside the lock core in a matching mode. The structure of an H-shaped key groove is improved, so the improved anti-theft lock overcomes the defect that a lock core in the prior art is poor in anti-theft performance due to the fact that structural design of the key groove is too simple, and enables the improved the anti-theft lock core of the H-shaped key groove to meet economic and practical actual demands.

Description

A kind of improved theftproof lock

Technical field

The utility model relates to a kind of mechanical type anti-theft lock core, refers to especially a kind of H type key theftproof lock.

Background technology

The structure of the plug keyway of using on the market at present all too simply causes the not good situation of theftproof performance because of design, and the good lock core of theftproof performance, the structure of its key is generally all comparatively complicated, does not reach economical and practical requirement.

The utility model content

The technical problems to be solved in the utility model provide a kind of simple in structure, give to produce and use and bring economical and practical improved H type key theftproof lock.

For solving the problems of the technologies described above, the utility model adopts following technical scheme:

A kind of improved theftproof lock, comprise lock housing, lock core and key, lock core is provided with H type key over against an end of key approach axis, lock core each side is provided with lock core marble hole along the key approach axis, lock core marble hole communicates with key, be provided with lock core marble in the lock core marble hole, lock housing is circumscribed with big envelope, the lock housing position corresponding with lock core marble hole is provided with the lock housing marble hole, the lock housing marble hole is from outer toward interior marble spring and the lock housing pellet of being provided with successively, the part of lock housing pellet can enter in the lock core marble hole, be provided with lock pin and pin-and-hole in the lock housing, one end of lock pin is fixed on the lock housing, and an end of lock pin is fixed on the pin-and-hole of lock housing, and the other end of lock pin passes pin-and-hole and extend in the arc-shaped limit groove of plug face.

As the improvement to the such scheme lock core, described lock pin slides in the arc-shaped limit groove, makes lock core reciprocating rotary in lock housing, and its rotation angle range is 0 °-180 °.

Selection is connected on lock pin on the lock housing, so that the assembling of lock core becomes convenient, it is simpler that production technology becomes, and it is more solid and reliable that connected mode becomes.If lock pin is connected on the lock core, lock core constantly repeats to rotate back and forth in the process of unblanking to lock, and accumulates over a long period, and lock pin is taken off by punching and the problem that causes lock core to lose efficacy with regard to being easy to occur.

The lock core marble hole of the every side of lock core described above is two rows, and two row's lock core marble holes are arranged in the mode that is parallel to each other and misplace up and down, two row's bullet groove about the corresponding H type of lock core marble hole key.

The bullet groove of key described above is with after lock core marble aligns, and lock core marble heads into the lock housing marble hole with the lock housing pellet and so that the cylindrical of lock housing pellet and lock core is tangent.

The medium position of two parallel horizontal edges of H type key described above is provided with positioning convex.

The medium position of the positive and negative of key described above is equipped with the detent suitable with positioning convex.

The degree of depth of each marble hole of the utility model key determines by the degree of depth that its corresponding lock core marble enters key, the in addition unique texture of the taper positioning convex on H type key of the present utility model and the key, type and the enterable degree of depth of key that to insert key have not only been limited, and so that in the situation of not inserting the key that structure therewith matches, be difficult in narrow space, to instigate two row's lock core marbles with instrument and unblank, greatly strengthened the theftproof performance of lock core.

As the improvement to the such scheme lock core, described lock housing pellet is the hollow-core construction of upper opening, and the part of marble spring enters in the opening of lock housing pellet.

The lock housing pellet is arranged to the hollow-core construction of upper opening, can be further reduced on the one hand the volume of lock core, simplify the lock core assembling, on the other hand also so that spring and lock housing pellet be not easy to misplace.

Lock core fit on described above is equipped with extensible member, and this extensible member rotates with lock core and can realize the motion of stretching or shrinking.

In order to bring into play better the theftproof performance of anti-theft lock, can install extensible member additional at lock core.When locking a door, lock core goes to the starting end position from the clearing end position of arc-shaped limit groove, impel extensible member outward direction make stretching routine and enter on the upper or drawer of door in the corresponding hole.When opening the door, lock core goes to the clearing end position from the starting end position of arc-shaped limit groove, impels extensible member to make contractile motion and withdraw from door upward or corresponding hole on the drawer toward interior direction.

Description of drawings

Fig. 1 is the perspective exploded view of the utility model lock core;

Fig. 2 is the utility model lock core marble schematic diagram;

Fig. 3 is the utility model lock housing pellet schematic diagram;

Fig. 4 is the utility model lock pin schematic perspective view;

Fig. 5 is the utility model key schematic perspective view;

Fig. 6 is the utility model lock core key flute profile schematic diagram;

Fig. 7 is that the lock housing pellet advanced line-locked cross-sectional schematic to lock core before Fig. 1 key inserted;

Fig. 8 is that the lock housing pellet carried out the cross-sectional schematic of release after Fig. 1 key inserted to lock core;

To be the utility model lock core forward the position view of lock pin before the II place to from I to Fig. 9;

To be the utility model lock core forward the position view of lock pin behind the II place to from I to Figure 10.

The specific embodiment

With reference to Fig. 1,2,3, shown in 4, a kind of improved theftproof lock of the utility model, comprise lock housing 1, lock core 2, key 3, iron cover 4, marble spring 5, lock housing pellet 6, lock core marble 7, lock pin 8, the outside of lock housing 1 is set with iron cover 4, lock core 2 is sleeved in the endoporus 101 of lock housing 1, lock core 2 surfaces have arc-shaped limit groove 203 away from a side of key 3 approach axis, one end of lock core 2 is provided with key 201, lock core 2 is provided with each side that two rows are parallel to each other and the lock core marble hole 202 of dislocation up and down along key 3 approach axis, lock core marble hole 202 all communicates with key 201, be provided with lock core marble 7 in the lock core marble hole 202, lock core marble 7 is the cylindrical body structure, lock core marble 7 upper ends are the smooth arcwall face 701 that arches upward, lock core marble 7 lower ends are smooth square face 702, lock housing 1 and lock core marble hole 201 corresponding positions are provided with lock housing marble hole 102, be provided with marble spring 5 and lock housing pellet 6 in the lock housing marble hole 102, lock housing pellet 6 is the hollow-core construction of upper opening, the end that lock housing pellet 6 contacts with lock core marble 7 is burnishing surface 601, the lower end of marble spring 5 enters in the opening of lock housing pellet 6, the upper end of marble spring 5 and iron overlap 4 close contacts, lock housing 1 and arc-shaped limit groove 203 corresponding positions are provided with pin-and-hole 103, be provided with lock pin 8 in the pin-and-hole 103, lock pin 8 one ends fixedly are riveted in the pin-and-hole 103, pass pin-and-hole 103 with the other end of smooth square face 801 and extend in the arc-shaped limit groove 203.

With reference to shown in Figure 5, the medium position of the positive and negative of key 3 is provided with taper detent 301, and the key fringe region of the left and right sides of key 3 is equipped with the two row bullet groove 302 corresponding with two row's lock core marble holes, 202 positions.

With reference to shown in Figure 6, key 201 is the H type of horizontal placement, and the medium position of two parallel edges of H type key is respectively equipped with taper positioning convex 204 and the taper positioning convex 205 suitable with key positive and negative taper detent 301 positions and the degree of depth.

With reference to shown in Figure 7, when key 3 does not insert lock core 2, owing to being subject to the pressure-acting of marble spring 5,6 pairs of lock core marbles 7 of lock housing pellet impose same pressure, force the lower end of lock core marble 7 to enter in the key 201, at this moment, lock housing pellet 6 is between lock housing 1 and the lock core 2, and lock core 2 can't be rotated.

With reference to shown in Figure 8, after key 3 inserts lock core 2, lock core marble 7 is because being subject to the impetus of key edge protuberance 303, lock core marble 7 gradually toward lock housing pellet 6 place directions move and the most at last lock housing pellet 6 head into lock housing marble hole 102, when the cylindrical 206 of lock housing pellet 6 and lock core 2 was tangent, twisting key 3 can be with movable lock core 2 rotations.

Shown in Fig. 9,10, when key 3 counterclockwise reverses, take lock core 2 to and rotate from the I position to position, II place, lock pin 8 limits owing to being subject to lock core 2 arc-shaped limit grooves 203 set radians, and rotation to 146 ° position just is forced to stop operating.At this moment, the expansion link parts that lock core 2 fit ons are installed withdraw from door upward or the hole on the drawer, namely realize unblanking.

But after unblanking, because the rotation of lock core 2 so that on lock core marble hole 202 and the lock housing 1 position of corresponding lock housing marble hole 102 change, cut off the removable path of lock core marble 7, lock core marble 7 can only be stuck in the key 201 always, causes key 3 to transfer to.Key 3 clockwise directions are rotated 146 °, make lock core 2 get back to position, I place from the II position, lock core marble hole 202 is got back to the position corresponding with lock housing marble hole 102, lock core marble 7 has had removable path, meanwhile, the expansion link parts of lock core 2 fit ons installation outwards stretch with its two ends of rotation of lock core 2.Transfer to key 3, an end of lock housing pellet 6 burnishing surfaces enters in the lock housing marble hole 102, and the upper end of lock core marble 7 enters in the key 201, can realize laying the key under the door.

The according to the above description announcement of book and instruction, the utility model those skilled in the art also can change and revise above-mentioned embodiment.Therefore, the specific embodiment that discloses and describe above the utility model is not limited to also should fall in the protection domain of claim of the present utility model modifications and changes more of the present utility model.In addition, used some specific terms in this manual, but these terms do not consist of any restriction to utility model just for convenience of description.

Claims (7)

1. improved theftproof lock, comprise lock housing, lock core and key, it is characterized in that: described lock core is provided with H type key over against an end of key approach axis, lock core each side is provided with lock core marble hole along the key approach axis, lock core marble hole communicates with key, is provided with lock core marble in the lock core marble hole; Described lock housing is circumscribed with big envelope, the lock housing position corresponding with lock core marble hole is provided with the lock housing marble hole, the lock housing marble hole is from outer toward interior marble spring and the lock housing pellet of being provided with successively, the part of lock housing pellet can enter in the lock core marble hole, be provided with lock pin and pin-and-hole in the lock housing, one end of lock pin is fixed on the pin-and-hole of lock housing, and the other end of lock pin passes pin-and-hole and extend in the arc-shaped limit groove of plug face.

2. a kind of improved theftproof lock according to claim 1, it is characterized in that: described lock pin slides in the arc-shaped limit groove, makes lock core reciprocating rotary in lock housing, and its rotation angle range is 0 °-180 °.

3. a kind of improved theftproof lock according to claim 1 and 2, it is characterized in that: the lock core marble hole of the every side of described lock core is two rows, two row's lock core marble holes are arranged in the mode that is parallel to each other and misplace up and down, two row's bullet groove about the corresponding H type of lock core marble hole key.

4. a kind of improved theftproof lock according to claim 3 is characterized in that: the bullet groove of described key is with after lock core marble aligns, and lock core marble heads into the lock housing marble hole with the lock housing pellet and so that the cylindrical of lock housing pellet and lock core is tangent.

5. a kind of improved theftproof lock according to claim 4, it is characterized in that: the medium position of two parallel horizontal edges of described H type key is provided with positioning convex; The medium position of the positive and negative of described key is equipped with the detent suitable with positioning convex.

6. a kind of improved theftproof lock according to claim 1, it is characterized in that: described lock housing pellet is the hollow-core construction of upper opening, and the part of marble spring enters in the opening of lock housing pellet.

7. a kind of improved theftproof lock according to claim 1, it is characterized in that: described lock core fit on is equipped with extensible member, and this extensible member rotates with lock core can realize the motion of stretching or shrinking.

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