CN106351513B

CN106351513B - Rotary type catch lock and the key to match

Info

Publication number: CN106351513B
Application number: CN201610859555.0A
Authority: CN
Inventors: 苗新威
Original assignee: Leadtech Metal Manufacturing (dong Guan) Co Ltd
Current assignee: Litai Internet Of Things Technology Guangdong Co ltd
Priority date: 2016-09-29
Filing date: 2016-09-29
Publication date: 2019-02-19
Anticipated expiration: 2036-09-29
Also published as: CN106351513A

Abstract

The key that the present invention discloses a kind of rotary type catch lock and matches, the rotary type catch lock include lock housing, lock core and limit the limit of lock core spinning movement and turn component, and it includes screening and the spring for being butted on screening lower end which, which turns component, which has side shelves point；There is the accommodating cavity for installing lock core inside the lock housing, the interior sidewall surface of the accommodating cavity is recessed with the ring-shaped groove of the longitudinal groove that front and back extends and circumferentially extending, the mounting hole that front and back extends is offered on lock core, screening is installed in mounting hole, spring is connected between screening and lock core along the longitudinal direction, side shelves point protrudes into longitudinal groove, and screening is located on rear side of stopper section.The key includes key body, handle portion, the second connection structure for being adapted connection with lock core, and, the convex block for being adapted to lock housing.When being inserted into key unlocking, screening pushes after being inserted by key, and screening side catch point is moved in longitudinal groove when ring-shaped groove, and rotation key can be rotated with movable lock core.

Description

Rotary type catch lock and the key to match

Technical field

The present invention relates to field of lockset technology, a kind of refer in particular to rotary type catch lock and match key.

Background technique

Currently, rotary type catch lock is widely applied, still, existing rotary type catch lock still have it is some not Foot, such as: confidentiality is poor, easily prize, anti-theft performance is not strong etc.；Also some rotary type catch locks have relatively good anti-theft Can, but there is the defects of structure is complicated, cost of manufacture is higher in it, be unsuitable for promoting and applying.

In present patent application, the key that applicant has studied intensively a kind of novel rotary type catch lock and matched has Effect solves the above problem.

Summary of the invention

In view of this, in view of the deficiencies of the prior art, the present invention aims to provide a kind of rotary type catchs The key locked and matched, anti-theft performance is good, meanwhile, structure designs advantages of simple, is readily produced production, answers suitable for promoting With.

To achieve the above object, the present invention is using following technical solution:

A kind of rotary type catch lock includes that lock housing, lock core and limitation lock core with respect to the limit of lock housing spinning movement turn component, It includes screening and the spring for being butted on screening lower end that the limit, which turns component, which has side shelves point；

There is the accommodating cavity for installing lock core, the front end of the lock housing is formed with the front end of perforation accommodating cavity inside the lock housing It is open, the stopper section for being formed at front opening and preventing lock core from deviating from is corresponded in lock housing；The interior sidewall surface of the accommodating cavity is recessed Cross hangs down each other for the ring-shaped groove of the longitudinal groove and circumferentially extending that have front and back to extend, the longitudinal groove and ring-shaped groove Straight perforation；The first recessing groove protruded into for key convex block, the second recessing groove exited for key, institute are offered on the stopper section State the first recessing groove, the second recessing groove penetrates through accommodating cavity respectively；

The lock core is installed in aforementioned accommodating cavity with respect to lock housing rotary type, is provided in aforementioned lock housing for limiting key There is the first limit corresponding with aforementioned first recessing groove to turn for the rotation limiting structure of rotation angle range, the rotation limiting structure Portion, the second limit corresponding with aforementioned second recessing groove transfer part, rotate between the first limit transfer part and the second limit transfer part for key Rotate resigning area；The front end of the lock core is provided with the first connection structure for connecting with key；The lock core is connected with lock core The baffle of rotation；The mounting hole that front and back extends is offered on the lock core, screening is installed in mounting hole, and spring connects along the longitudinal direction It is connected between screening and lock core, the inner sidewall of mounting hole offers the third recessing groove stretched out for the side shelves point of screening, side Shelves point protrudes into longitudinal groove after stretching out third recessing groove, and screening is located on rear side of stopper section.

As a preferred embodiment, it is offered on the lock core for the 4th recessing groove with key fits, the 4th allows Position slot is penetrated through with aforementioned first recessing groove, the second recessing groove face respectively with the rotation of lock core.

As a preferred embodiment, first connection structure is recessed in the annular link slot of lock core front end and by annular The connecting column that link slot surrounds, the periphery of annular link slot are surrounded with annular wall, and aforementioned 4th recessing groove includes radial perforation The first slot section, the radial direction of annular wall penetrate through the second slot section of annular link slot and protrude into the third slot section inside connecting column.

As a preferred embodiment, the lateral connection slot for running through accommodating cavity, the lock core are additionally provided in the lock housing Lateral surface be circumferentially recessed with annular positioning groove, be additionally provided with a positioning pin, the transverse direction which protrudes into lock housing connects In access slot, which is protruded into the annular positioning groove of lock core；

As a preferred embodiment, the rear end of the longitudinal groove penetrates through lock housing rear end face, the front end of the longitudinal groove For cecum；The rotation limiting structure is that stopper section rear end is recessed with forward arc groove, and aforementioned rotation resigning area is that arc is recessed The groove body of slot, aforementioned first limit transfer part, the second limit transfer part are the both ends of the surface of arc groove circumferentially.

As a preferred embodiment, the rear end of the stopper section corresponds to screening and is provided with the limiting groove being laterally extended, limit Position groove penetrates through corresponding longitudinal groove front end, and the restricted screening of limiting groove interior forward end face projection is with respect to lock housing lateral displacement First protrusion；The front end of aforementioned screening is formed with the second protrusion being adapted to limiting groove and is pushed away for what key pushed backward Portion, the pushed part are exposed at the mounting hole of lock core and at the front opening of the accommodating cavity of lock housing.

As a preferred embodiment, first protrusion has an oblique lateral surface extended outward forward after, and described the Two protrusions have the oblique medial surface extended outward forward after, and spacing convave trough, institute are formed between the second protrusion and pushed part It states the first protrusion to adapt in spacing convave trough, the lateral surface is in contact with medial surface, and the pushed part is located at the first protrusion Inside；And screening rear end has protruded out positioning column, aforementioned spring is socketed on outside positioning column, and spring at front end is butted in screening, bullet Spring rear end is butted on mounting hole Internal back end face.

As a preferred embodiment, the limit turn component be provided with it is more than two, there are two corresponding mounting hole is also provided with More than；And the peripheral surface of the lock housing is provided with the external screw thread being easily installed；The rear end of the lock core is recessed forward after There is connecting hole, the connecting hole inner wall is formed with convenient for the internal screw thread of connection baffle.

A kind of key matched with aforementioned rotary type catch lock includes key body, handle portion, for lock core One connection structure is adapted the second connection structure of connection, and, for the first recessing groove with lock housing, the second recessing groove difference The convex block of adaptation；Wherein, the handle portion, the second connection structure, convex block are connected on key body.

As a preferred embodiment, the key body is in circular tube structure, and second connection structure includes to have to be located at The annular embedded division of key body rear end and the blocky embedded division for being convexly equipped in annular embedded division inner wall；Aforementioned convex block is embedding from annular Enter the peripheral surface projection radially outward in portion；It is described annular embedded division rear end face be recessed with forward it is more than two push slot, The peripheral surface spacing arrangement for pushing the annular embedded division in slot edge, the inner wall for pushing slot and being not penetrated annular embedded division, It is described to push the pushing surface having inside slot for pushing lockset screening.

The present invention has obvious advantages and beneficial effects compared with the existing technology, specifically, by above-mentioned technical proposal It is found that it is mainly by the way that rotary type catch lock to be designed as including that lock housing, lock core and limitation lock core are dynamic relative to lock housing rotation The limit of work turns several parts of component, by key design be include key body, handle portion, be used to be adapted the second of connection with lock core Several parts such as connection structure, convex block for being adapted to lock housing, when being inserted into key unlocking, screening pushes after being inserted by key, Screening side catch point is moved in longitudinal groove when ring-shaped groove, and rotation key can be rotated with movable lock core；It has very Good anti-theft performance, meanwhile, structure designs advantages of simple, is readily produced production, is suitable for popularization and application.

In order to explain the structural features and functions of the invention more clearly, come with reference to the accompanying drawing with specific embodiment to this hair It is bright to be described in detail.

Detailed description of the invention

Fig. 1 is the assembling perspective representation of embodiments of the present invention；

Fig. 2 is the first decomposition texture diagram of embodiments of the present invention；

Fig. 3 is the second decomposition texture diagram of embodiments of the present invention；

Fig. 4 is the third decomposition texture diagram of embodiments of the present invention；

Fig. 5 is the first cross section structure diagram (part) of embodiments of the present invention；

Fig. 6 is the second cross section structure diagram (part) of embodiments of the present invention；

Fig. 7 is the third cross section structure diagram of embodiments of the present invention；

Fig. 8 is the decomposition texture diagram of rotary type catch lock in embodiments of the present invention；

Fig. 9 is the perspective representation of the lock housing of rotary type catch lock in the present embodiment；

Figure 10 is the rearview of the lock housing of rotary type catch lock in the present embodiment；

Figure 11 is the cut-away view (bilateral) of the lock housing of rotary type catch lock in the present embodiment；

Figure 12 is the cut-away view (unilateral) of the lock core of rotary type catch lock in the present embodiment；

Figure 13 is the front view of the lock housing of rotary type catch lock in the present embodiment；

Figure 14 is the cut-away view (unilateral) of key in the present embodiment.

Description of drawing identification:

10, lock housing 11, accommodating cavity

12, stopper section 121, the first recessing groove

122, the second recessing groove 123, limiting groove

124, the first protrusion 1241, lateral surface

13, longitudinal groove 14, ring-shaped groove

15, the first limit transfer part 16, second limits transfer part

17, resigning area 18, lateral connection slot are rotated

19, external screw thread

20, lock core 21, mounting hole

211, third recessing groove 22, the 4th recessing groove

221, the first slot section 222, the second slot section

223, third slot section 23, annular link slot

24, connecting column 25, annular wall

26, annular positioning groove 27, connecting hole

271, internal screw thread

30, limit turns component 31, screening

311, the 312, second protrusion of side shelves point

3121, medial surface 313, pushed part

314, spacing convave trough 315, positioning column

32, spring

40, positioning pin

50, key 51, key body

52, handle portion 53, convex block

541, annular embedded division 542, blocky embedded division

543, slot 544, pushing surface are pushed

55, fin.

Specific embodiment

It please refers to shown in Fig. 1 to Figure 14, that show the specific structure of embodiments of the present invention, shown rotary type catch Lock & key collocation uses.

The rotary type catch lock includes that lock housing 10, lock core 20 and limitation lock core 20 turn with respect to the limit of 10 spinning movement of lock housing Component 30, it includes screening 31 and the spring 32 for being butted on 31 lower end of screening which, which turns component 30, which has side shelves point 311。

There is the accommodating cavity 11 for installing lock core 20, front end, the rear end of the lock housing 10 are respectively formed inside the lock housing 10 There are front opening, the open rearward end of perforation accommodating cavity 11, corresponding to be formed at front opening in lock housing 10 prevents lock core 20 from deviating from Stopper section 12；The interior sidewall surface of the accommodating cavity 11 is recessed with the annular ditch of the longitudinal groove 13 that front and back extends and circumferentially extending Slot 14, the longitudinal groove 13 and ring-shaped groove 14 each other cross vertically through；It offers on the stopper section 12 for key Spoon convex block the first recessing groove 121 protruded into, the second recessing groove 122 for exiting for key, first recessing groove 121, second allow Position slot 122 penetrates through accommodating cavity 11 respectively.

The lock core 20 is installed in aforementioned accommodating cavity 11 with respect to 10 rotary type of lock housing, is provided with and is used in aforementioned lock housing 10 The rotation limiting structure of key rotation angle range is limited, the rotation limiting structure has right with aforementioned first recessing groove 121 The first limit transfer part 15, second limit corresponding with aforementioned second recessing groove 122 transfer part 16 answered, the first limit transfer part 15 and the second limit turn Rotation resigning area 17 between portion 16 to be rotated for key；Herein, limitation key can only do 90 degree of rotations, certainly, rotate angle Control mainly in view of people rotate unlock routine operation habit, other angular ranges can also be limited on demand.

The front end of the lock core 20 is provided with the first connection structure for connecting with key；The lock core 20 is connected with lock core The baffle of 20 rotations；The mounting hole 21 that front and back extends is offered on the lock core 20, screening 31 is installed in mounting hole 21, spring 32 It is connected between screening 31 and lock core 20 along the longitudinal direction, the inner sidewall of mounting hole 21 offers the side shelves point for screening 31 The 311 third recessing grooves 211 stretched out, side shelves point 311 protrude into longitudinal groove 13 after stretching out third recessing groove 211, screening 31 Positioned at 12 rear side of stopper section.As shown in Figure 12 and Figure 13, herein, mounting hole 21 is seen in posterior view point, and 21 a part of mounting hole is passed through Lead to aftermentioned annular wall 25, the aftermentioned annular link slot 23 of 21 another part of mounting hole perforation；Since aforementioned screening 31 is substantially in flat There is round hole and the straight trough recessed towards center axis in round hole inner wall, straight trough to allow with third for laminated structure, mounting hole 21 Position slot 211 is located at the contralateral side in respective circular hole.Straight trough, round hole, third recessing groove 211 prolong in the same direction (front-rear direction) It stretches, straight trough is penetrated through to round hole Inner Front End face, and third recessing groove 211 is not penetrated to round hole Inner Front End face, third recessing groove 211 Extension depth be shorter than the extension depth of round hole, i.e., after 211 Inner Front End face of third recessing groove is located at round hole Inner Front End face Side.

It is offered on aforementioned lock core 20 for the 4th recessing groove 22 with key fits, the 4th recessing groove 22 is with lock core 20 Rotation and respectively with aforementioned first recessing groove 121,122 face of the second recessing groove penetrate through.The convex block 53 of following keys 50 can be same When protrude into the 4th recessing groove 22, the first recessing groove 121, alternatively, protruding into the 4th recessing groove 22, the second recessing groove 122 simultaneously；Here When installing lock core 20, if lock housing 10 is designed as integral type tubular structure, then, lock core 20 is the accommodating cavity 11 from lock housing 10 Open rearward end is packed into forward in accommodating cavity 11.The stopper section 12 of lock core 20 and lock housing 10 has part to form folded set.Described first Connection structure is the recessed annular link slot 23 in 20 front end of lock core and the connecting column 24 surrounded by annular link slot 23, and annular is even The periphery of access slot 23 is surrounded with annular wall 25, and aforementioned 4th recessing groove 22 includes the first slot section of radial perforation annular wall 25 221, radial direction penetrates through the second slot section 222 of annular link slot 23 and protrudes into the third slot section 223 inside connecting column 24.

As previously described, which is installed in aforementioned accommodating cavity 11 with respect to 10 rotary type of lock housing, that is to say, that lock Core 20 is fixed with respect to 10 position of lock housing, and lock core does not fall out lock housing 10, but lock core 20 can make spinning movement with respect to lock housing 10, In Conventional rotary lockset, lock core and lock housing are all this structural relations, can be realized by different conventional designs.This reality It applies in example, is the lateral connection slot 18 for running through accommodating cavity 11 by being provided in lock housing 10, the lateral surface of the lock core 20 It is circumferentially recessed with annular positioning groove 26, is additionally provided with a positioning pin 40, the transverse direction which protrudes into lock housing 10 connects In access slot 18, which is protruded into the annular positioning groove 26 of lock core 20；In this way, realizing lock core using positioning pin 40 Connection positioning between 20 secret lock housings 10, when lock core 20 is with respect to 10 spinning movement of lock housing, the other end of positioning pin 40 is along annular Locating slot 26 is displaced.

As previously described, the rotation limiting structure for limiting key rotation angle range is provided in aforementioned lock housing 10, In Conventional rotary lockset, also key and rotation angle range can all be limited.Herein to the tool of rotation limiting structure Body design are as follows: the rear end of the longitudinal groove 13 penetrates through 10 rear end face of lock housing, and the front end of the longitudinal groove 13 is cecum；It is described Rotation limiting structure is that 12 rear end of stopper section is recessed with forward arc groove, and aforementioned rotation resigning area 17 is the slot of arc groove Body, it is the both ends of the surface of arc groove circumferentially that aforementioned first limit transfer part 15, second, which limits transfer part 16,.The angle of the arc groove is 90 degree, 90 degree of rotations can only be done by being equivalent to limitation key.

31 rear ends for being directly butted on stopper section 12 can also realize the technical solution of present patent application at aforementioned row, in this implementation In example, applicant has carried out better Position Design to screening 31, to improve the movement accuracy of lockset；Specifically: preceding The rear end for stating stopper section 12 corresponds to screening 31 and is provided with the limiting groove 123 being laterally extended, and limiting groove 123 penetrates through corresponding longitudinal direction 13 front end of groove, the first protrusion of opposite 10 lateral displacement of lock housing of the restricted screening 31 of 123 interior forward end face projection of limiting groove 124；The front end of aforementioned screening 31 be formed with the second protrusion 312 being adapted to limiting groove 123 and for key push backward by Pushed section 313, the pushed part 313 are exposed at the mounting hole 21 of lock core 20 and at the front opening of the accommodating cavity 11 of lock housing 10.Institute The first protrusion 124 is stated with the oblique lateral surface 1241 extended outward, second protrusion 312 have after forward forward after The oblique medial surface 3121 extended outward, is formed with spacing convave trough 314 between the second protrusion 312 and pushed part 313, and described first Protrusion 124 adapts in spacing convave trough 314, and the lateral surface 1241 is in contact with medial surface 3121, and the pushed part 313 is located at The inside of first protrusion 124；And 31 rear end of screening has protruded out positioning column 315, aforementioned spring 32 is socketed on outside positioning column 315 Portion, 32 front end of spring are butted in screening 31, and 32 rear end of spring is butted on 21 Internal back end face of mounting hole.

As shown in Fig. 2, Fig. 4 and Figure 13, the limit turns component 30 and generally requires to be provided with more than two, corresponding mounting hole 21 are also equipped with two or more；Certainly, only one group of setting can also realize that limit turns；In the present embodiment, limit turns component 30 and is provided with four Group, there are four corresponding corresponding mounting hole 21 is also provided with.The limit turns component 30, mounting hole 21 and is along the circumferential direction evenly distributed with, It is more steady when unlocking operation.And the peripheral surface of the lock housing 10 is provided with the external screw thread 19 being easily installed；The lock core 20 rear end is recessed with forward connecting hole 26 after, and 26 inner wall of connecting hole is formed with convenient for the internal screw thread of connection baffle 27。

The key 50 is matched with aforementioned rotary type catch lock, the key 50 include key body 51, handle portion 52, The second connection structure of connection is adapted for the first connection structure with lock core 20, and, for being allowed with the first of lock housing 10 The convex block 53 that position slot 121, the second recessing groove 122 are adapted to respectively；Wherein, the handle portion 52, the second connection structure, convex block 53 are distinguished It is connected on key body 51.

In the present embodiment, the key body 51 is in circular tube structure, and second connection structure includes to have positioned at key The annular embedded division 541 of 51 rear end of main body and the blocky embedded division 542 for being convexly equipped in annular 541 inner wall of embedded division；Annular insertion 541 inner wall of portion is typically designed as round wall surface.The peripheral surface of aforementioned convex block 53 from annular embedded division 541 is convex radially outward If；It is described annular embedded division 541 rear end face be recessed with forward it is more than two push slot 543, the slot 543 that pushes is along annular The peripheral surface spacing of embedded division 541 arranges that the inner wall for pushing slot 543 and being not penetrated annular embedded division 541 is described to push There is the pushing surface 544 for pushing lockset screening inside slot 543.The aforementioned slot 543 that pushes is preferably designed for 4, and 4 push slot 543 along annular embedded division 541 peripheral surface it is uniformly distributed, in this way, annular embedded division 541 in posterior view point be substantially in it is quincunx, such as Shown in Fig. 2 and Fig. 4.

And as shown in figure 14, the inside of key body 51 is provided with the fin 55 being laterally extended by front end position, convex Rib 55 links into an integrated entity with handle portion 52, and the front end of aforementioned bulk embedded division 542 links into an integrated entity with convex rib 55.Handle portion 52 On be provided with anti-skid structure, the front end of handle portion 52 offers hanging hole.

Next, substantially introduce key 50 and rotary type catch lock fitting relation and unlocking action principle it is as follows:

After key 50 is inserted into rotary type catch lock, annular embedded division 541 is protruded into annular link slot 23, and connecting column 24 is stretched Enter inside annular embedded division 541, blocky embedded division 542 protrudes into the third slot section 223 of the 4th recessing groove 22；Convex block 53 passes through the One recessing groove 121 protrudes into the first slot section 221 of the 4th recessing groove 22, and key 50 pushes the corresponding screening 31 of slot 543；With key Spoon 50 pushes backward, and the side catch point 311 of screening 31 is moved in longitudinal groove 13 when ring-shaped groove 14, rotates key 50 It can be rotated with movable lock core 20, baffle is rotated with lock core 20 to be realized and unlock, and during this, the side catch point 311 of screening 31 is along ring Shape groove 14 is displaced.

Design focal point of the invention is, mainly by the way that rotary type catch lock to be designed as including lock housing, lock core And limitation lock core turns several parts of component with respect to the limit of lock housing spinning movement, being by key design includes key body, handle portion, use In the second connection structure of connection is adapted with lock core, several parts such as convex block for being adapted to lock housing, in insertion key unlocking When, screening pushes after being inserted by key, and screening side catch point is moved in longitudinal groove when ring-shaped groove, and rotation key is It can be rotated with movable lock core；Its with good anti-theft performance, meanwhile, structure design advantages of simple, be readily produced production, be suitable for It promotes and applies.

The above described is only a preferred embodiment of the present invention, be not intended to limit the scope of the present invention, Therefore any subtle modifications, equivalent variations and modifications to the above embodiments according to the technical essence of the invention, still Belong in the range of technical solution of the present invention.

Claims

1. a kind of rotary type catch lock, it is characterised in that: include lock housing (10), lock core (20) and the opposite lock of limitation lock core (20) The limit of shell (10) spinning movement turns component (30), which turns component (30) and include screening (31) and be butted on screening (31) lower end Spring (32), the screening (31) have side shelves point (311)；

There is the accommodating cavity (11) for installing lock core (20), the front end of the lock housing (10) is formed with perforation inside the lock housing (10) The front opening of accommodating cavity (11) corresponds to the stopper section for being formed at front opening and preventing lock core (20) from deviating from lock housing (10) (12)；The interior sidewall surface of the accommodating cavity (11) is recessed with the ring-shaped groove of the longitudinal groove (13) that front and back extends and circumferentially extending (14), the longitudinal groove (13) and ring-shaped groove (14) each other cross vertically through；It is opened up on the stopper section (12) There are the first recessing groove (121) protruded into for key convex block, the second recessing groove (122) exited for key, first recessing groove (121), the second recessing groove (122) penetrates through accommodating cavity (11) respectively；

The lock core (20) is installed in aforementioned accommodating cavity (11) with respect to lock housing (10) rotary type, is provided on aforementioned lock housing (10) For limiting the rotation limiting structure of key rotation angle range, the rotation limiting structure has and aforementioned first recessing groove (121) corresponding first limit transfer part (15), the second limit transfer part (16) corresponding with aforementioned second recessing groove (122), the first limit turn Rotation resigning area (17) between portion (15) and the second limit transfer part (16) to be rotated for key；The front end of the lock core (20) is provided with The first connection structure for being connect with key；The lock core (20) is connected with the baffle rotated with lock core (20)；The lock core (20) On offer the mounting hole (21) that front and back extends, screening (31) is installed in mounting hole (21), and spring (32) connects along the longitudinal direction It is connected between screening (31) and lock core (20), the inner sidewall of mounting hole (21) offers the side shelves point (311) for screening (31) The third recessing groove (211) of stretching, side shelves point (311) protrude into longitudinal groove (13) after stretching out third recessing groove (211), row Piece (31) is located on rear side of stopper section (12)；

It is offered on the lock core (20) for the 4th recessing groove (22) with key fits, the 4th recessing groove (22) is with lock core (20) rotation and penetrated through respectively with aforementioned first recessing groove (121), the second recessing groove (122) face；

First connection structure is enclosed to be recessed in the annular link slot (23) of lock core (20) front end and by annular link slot (23) Around connecting column (24), the periphery of annular link slot (23) is surrounded with annular wall (25), and aforementioned 4th recessing groove (22) includes The first slot section (221), the radial direction of radial perforation annular wall (25) penetrate through the second slot section (222) of annular link slot (23) and protrude into The internal third slot section (223) of connecting column (24)；

The lateral connection slot (18) for running through accommodating cavity (11), the outside of the lock core (20) are additionally provided on the lock housing (10) Face is circumferentially recessed with annular positioning groove (26), is additionally provided with a positioning pin (40), which protrudes into lock housing (10) in lateral connection slot (18), which is protruded into the annular positioning groove (26) of lock core (20)；

The rear end of the longitudinal groove (13) penetrates through lock housing (10) rear end face, and the front end of the longitudinal groove (13) is cecum；Institute Stating rotation limiting structure is that stopper section (12) rear end is recessed with forward arc groove, and aforementioned rotation resigning area (17) is arc groove Groove body, it is aforementioned first limit transfer part (15), second limit transfer part (16) be the both ends of the surface of arc groove circumferentially；

The rear end of the stopper section (12) corresponds to screening (31) and is provided with the limiting groove (123) being laterally extended, limiting groove (123) corresponding longitudinal groove (13) front end is penetrated through, the restricted screening of limiting groove (123) interior forward end face projection (31) is opposite to lock First protrusion (124) of shell (10) lateral displacement；The front end of aforementioned screening (31) is formed be adapted to limiting groove (123) Two protrusions (312) and the pushed part (313) pushed backward for key, the pushed part (313) are exposed to the mounting hole of lock core (20) (21) at and at the front opening of the accommodating cavity (11) of lock housing (10).

2. rotary type catch lock according to claim 1, it is characterised in that: first protrusion (124) has from rear past The preceding oblique lateral surface (1241) extended outward, second protrusion (312) have the oblique inside extended outward forward after Face (3121) is formed with spacing convave trough (314) between the second protrusion (312) and pushed part (313), first protrusion (124) It adapts in spacing convave trough (314), the lateral surface (1241) is in contact with medial surface (3121), pushed part (313) position In the inside of the first protrusion (124)；And screening (31) rear end has protruded out positioning column (315), aforementioned spring (32) is socketed on fixed Position column (315) is external, and spring (32) front end is butted on screening (31), and spring (32) rear end is butted on mounting hole (21) Internal back end Face.

3. according to claim 1 to rotary type catch lock described in any one of 2, it is characterised in that: the limit turns component (30) it is provided with more than two, corresponding mounting hole (21) is also equipped with two or more；And the outer weekly form of the lock housing (10) Face is provided with the external screw thread (19) being easily installed；The rear end of the lock core (20) is recessed with forward connecting hole (26) after, described Connecting hole (26) inner wall is formed with convenient for the internal screw thread (27) of connection baffle.