chain lock
Patent Information
- Application Number
- DE202021004482
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- Filing Date
- 2021-09-01
- Publication Date
- 2025-03-06
- Estimated Expiration
- 2031-09-30
Smart Images
Figure 00000000_0000_ABST
Abstract
Description
Field of the invention
[0001] The present invention relates to a chain lock, and more particularly to a lock in which the locking operation can be performed without using a key and the locking angle of the chain can be adjusted at will. State of the art
[0002] Ordinary chain locks are mainly used to connect objects to fixed objects, e.g., connecting a bicycle to a post. In conventional chain lock structures, the two ends of a chain are connected to a lock that can be locked together. The lock is a combination lock or a padlock, which ensures that connected objects cannot be moved, thus preventing them from being stolen. In the conventional chain lock, the design provides for a separate arrangement of the lock and chain. The lock can easily be lost. Therefore, there is a chain lock structure in which the lock is locked to one end of the chain and is formed integrally with it. It is applied to the Fig. 1 and Fig. 2. The conventional chain lock is mainly provided with a lock body 10, wherein the lock body 10 is provided with a first slot 100 and a second slot 101, and a compression spring 11 and a lock cylinder 12 are arranged in the lock body 10, and a plug rod 13 is arranged below and combined with the lock cylinder 12, and the lower end of the plug rod 13 can be inserted through the second slot 101 of the lock body 10, and one end of the chain 14 is fixed in the first slot 100 of the lock body 10 by a fixing bolt, and the plug rod 13 is inserted through the other end of the chain 14 for positioning and inserted into the second slot 101 of the lock body 10 for locking. In this way, objects can be connected easily and conveniently, thereby achieving an anti-theft function.Although the conventional chain lock can prevent the lock body 10 and the chain 14 from coming loose and getting lost, the opening positions of the first slot 100 and the second slot 101 on the lock body 10 are fixed (arranged in opposite directions) and cannot be adjusted. Consequently, it is not easy to lock the chain 14 when space is limited during connection. A key is required to rotate the lock cylinder 12 when opening and closing the lock. Therefore, the usability is still insufficient.
[0003] From CN 1 10 005 277 A, a generic chain lock is known, which consists of a lock body, a rotating base, a compression spring, a plug-in rod, a locking cylinder, and a chain, wherein the lock body is provided with a receiving recess. The compression spring surrounds the plug-in section of the plug-in rod. The locking cylinder is arranged in the receiving chamber of the plug-in rod, and the plug-in rod is arranged in the receiving recess of the lock body. A locking lever is arranged below the locking cylinder in the locking lever recess of the plug-in rod. One end of the chain is fastened by means of the plug-in rod in a first insertion slot of the lock body. The rotating base is arranged below the lock body.A mounting seat is arranged in the rotating base, with a recess for inserting the locking bar provided in the mounting seat, and a second slot for inserting the other end of the chain on the wall surface of the rotating base. Thus, the rotating base is arranged below the lock body, and the angle of the rotating base can be adjusted as desired, making locking operation more convenient.
[0004] From CN 1 11 502 435 A a chain lock is known which primarily consists of an upper body, a lower body, a locking seat, a lower fastening seat, a plug-in rod, a compression spring, a locking cylinder, a rotating body, a torsion spring, a locking lever, an upper fastening seat and a chain, wherein the upper body and the lower body are rotatably locked together and the locking seat is arranged in the lower body and the lower fastening seat is arranged below the lower body and the locking cylinder, the rotating body and the locking lever are combined with each other and the torsion spring is arranged between the locking cylinder and the rotating body and the locking cylinder, the rotating body,The torsion spring and the locking lever are arranged together in the plug-in rod, and the compression spring surrounds the plug-in rod. The plug-in rod and the compression spring are arranged together in the upper body. The upper fastening seat is arranged above the upper body. One end of the chain is fixed by means of the plug-in rod in the first slot of the upper body, and the other end of the chain is inserted into the second slot of the lower body. In this way, the locking operation can be performed without the use of a key, and to perform the unlocking operation, only the lock cylinder needs to be turned using a key, which makes the locking operation more convenient. Object of the invention
[0005] It is the main object of the present invention to provide a chain lock that is improved over the closest prior art.
[0006] This object is achieved by a chain lock having the features specified in claim 1. The chain lock according to the invention comprises the following: a lock body, wherein the lock body is provided with a receiving recess and the wall surface of the receiving recess is provided with at least one guide groove and a positioning slot and the bottom of the lock body is provided with a through hole continuously connected to the receiving recess and the wall surface of the lock body is provided with a with the through hole continuously connected first slot and the underside of the lock body is provided with a locking groove and the The top of the lock body has two screw holes; a rotary base arranged below the lock body and provided with a through hole, wherein the wall surface of the rotary base is provided with a second slot continuously connected to the through hole, and a locking edge engaging with the locking groove of the lock body is provided protrudingly on the upper edge of the through hole of the rotary base, and a stop edge is provided within the through hole of the rotary base on the bottom surface of the second slot, and the underside of the rotary base is provided with two screw holes, wherein a locking seat is arranged in the through hole of the rotary base and is provided with a plug-in recess, wherein the wall surface of the plug-in recess is provided with a locking ring groove; a lower mounting seat located below the rotating base and the locking seat and provided with a recess and two through holes, wherein a screw is passed through the corresponding through hole of the lower mounting seat and screwed into the respective screw hole of the rotating base; a plug-in rod arranged in the receiving recess of the lock body and inserted through the through-hole and the through-hole of the rotary base and designed as a locking seat section and plug-in section, wherein a receiving chamber is provided in the locking seat portion, and the inner wall of the receiving chamber of the locking seat portion is provided with a positioning ring groove, and the wall surface of the locking seat portion is provided with a pin hole and a first steel ball hole, and a positioning pin is arranged in the pin hole, and a positioning steel ball is arranged in the first steel ball hole, and a locking lever recess continuously connected to the receiving chamber is provided in the plug-in portion, and the wall surface of the plug-in portion is provided with two second steel ball holes continuously connected to the locking lever recess, and a locking steel ball is arranged in each of the second steel ball holes, wherein a compression spring surrounds the plug-in portion of the plug-in rod and is located in the receiving recess of the lock body; a lock cylinder arranged in the receiving chamber of the locking seat portion of the plug rod, wherein a rotation axis is arranged on the underside of the lock cylinder, and the bottom of the rotation axis is provided with a recessed hole, and the wall surface of the rotation axis is provided with an elongated slot continuously connected to the recessed hole, and the underside of the lock cylinder is further provided with an insertion hole, and the top of the lock cylinder is provided with a key insertion hole, and a C-ring surrounds and locks the wall surface of the lock cylinder and is engaged with it and engaged in the positioning ring groove of the plug rod, wherein a rotating body is arranged below the lock cylinder and is provided with a through hole for receiving the rotation axis of the lock cylinder,wherein the wall surface of the rotating body is provided with an arcuate groove, and the wall surface of the rotating body is further provided with an elongated slot continuously connected to the through hole, and the rotating body is provided with an insertion hole, wherein a torsion spring is arranged between the lock cylinder and the rotating body, and one end of the torsion spring is inserted into the insertion hole located on the underside of the lock cylinder and the other end of the torsion spring is inserted into the insertion hole of the rotating body, wherein a locking lever is arranged below the rotating body, and a protruding body is arranged on the top side of the locking lever and is located in the recessed hole of the locking cylinder, wherein the protruding body is provided with a pin hole, and correspondingly, the wall surface of the lower end of the locking lever is provided with a slot,wherein a first pin is passed through the elongated slot of the rotating body and the elongated slot of the lock cylinder and inserted into the pin hole of the locking lever;, an upper mounting seat arranged above the lock body and provided with a through hole for passing the locking seat portion of the plug rod and two through holes, wherein a screw is passed through each of the corresponding through holes of the upper mounting seat and screwed into the corresponding screw hole of the lock body, and a connecting piece for connecting to a dust cover is arranged on one side of the upper mounting seat; a chain, one end of the chain being fixed in the first slot of the lock body and the other end of the chain being inserted into the second slot of the rotating base and the outside of the chain being provided with a covering.
[0007] The advantage of the chain lock according to the invention is that, due to the mutual engagement and rotatable combination of the lock body with the rotating base, the rotating base and the lock body can be rotated at any angle. The locking angle of the chain can be automatically adjusted to suit the intended use by rotating it, so that there are no spatial restrictions when connecting with the chain. Due to the arrangement of the rotating body and the torsion spring of the locking cylinder, the lock can be automatically locked upon connection without the use of a key. Furthermore, a dust cover is provided, which can cover the key insertion hole to achieve the advantageous effect of dust protection and water protection. Brief description of the drawings Fig. 1 shows a perspective view of a conventional chain lock; Fig. 2 shows a schematic view of the conventional chain lock in use; Fig. 3 shows an exploded perspective view of the lock of an embodiment according to the present invention; Fig. 4 shows a perspective view of the embodiment according to the present invention; Fig. Fig. 5 shows a sectional view of the embodiment according to the present invention (in the unlocked state); Fig. Fig. 6 shows a sectional view of the embodiment according to the present invention from another angle (in the unlocked state); Fig. 7 shows a schematic perspective view of the embodiment according to the present invention in the locked state; Fig. 8 shows a schematic sectional view of the embodiment according to the present invention in the locked state; Fig. 9 shows a sectional view of the embodiment according to the present invention from another angle in the locked state; Fig. 10 shows a schematic view of the embodiment according to the present invention in use, in which the rotary base and the lock body are rotated by an angle. Detailed description of the embodiment
[0008] For a better understanding of the object and the advantageous effects of the present invention, a possible preferred embodiment is described in detail below with reference to the figures.
[0009] It is based on the Fig. 3 to 5. The embodiment of the present invention primarily comprises the following: a lock body 2, wherein the lock body 2 is provided with a receiving recess 20, and the wall surface of the receiving recess 20 is provided with at least one guide groove 21 and a positioning slot 22, and the bottom of the lock body 2 is provided with a through-hole 23 continuously connected to the receiving recess 20, and the wall surface of the lock body 2 is provided with a first slot 24 continuously connected to the through-hole 23, and the underside of the lock body 2 is provided with a locking groove 25, and the top of the lock body 2 is provided with two screw holes 26; a rotary base 3 arranged below the lock body 2 and provided with a through-hole 30,wherein the wall surface of the rotary base 3 is provided with a second slot 31 continuously connected to the through-hole 30, and a locking edge 32 is provided protrudingly at the upper edge of the through-hole 30 of the rotary base 3, and a stop edge 33 is provided within the through-hole 30 of the rotary base 3 on the bottom surface of the second slot 31 of the rotary base 3, and the underside of the rotary base 3 is provided with at least two screw holes 34, wherein a locking seat 35 is further arranged in the through-hole 30 of the rotary base 3 and is provided with a plug-in recess 350, wherein the wall surface of the plug-in recess 350 is provided with a locking ring groove 351; a lower fastening seat 4, which is arranged below the rotary base 3 and the locking seat 35 and is provided with a recess 40 and at least two through-holes 41,wherein a screw 42 is inserted through the corresponding through hole 41 of the fastening seat 4; a plug-in rod 5, which is arranged in the receiving recess 20 of the lock body 2 and inserted through the through hole 23 and the through hole 30 of the rotary base 3 and is designed as a locking seat section 50 and plug-in section 51,wherein a receiving chamber 500 is provided in the locking seat portion 50, and the inner wall of the receiving chamber 500 is provided with a positioning ring groove 501, and the wall surface of the locking seat portion 50 is provided with a pin hole 502, and a positioning pin 503 is arranged in the pin hole 502, and the wall surface of the locking seat portion 50 is further provided with a first steel ball hole 504, and a positioning steel ball 505 is arranged in the first steel ball hole 504, and a locking lever recess 510 continuously connected to the receiving chamber 500 is provided in the plug-in portion 51, and the wall surface of the plug-in portion 51 is provided with two second steel ball holes 511 continuously connected to the locking lever recess 510, and a locking steel ball 512 is arranged in each second steel ball hole 511,wherein a compression spring 52 surrounds the plug-in portion 51 of the plug-in rod 5 and is located in the receiving recess 20 of the lock body 2; a lock cylinder 6 arranged in the receiving chamber 500 of the locking seat portion 50 of the plug-in rod 5, wherein a rotation axis 60 is arranged on the underside of the lock cylinder 6, and the bottom of the rotation axis 60 is provided with a recessed hole 61, and the wall surface of the rotation axis 60 is provided with a second slot 601 continuously connected to the recessed hole 61, and the underside of the lock cylinder 6 is further provided with an insertion hole 62, and the top of the lock cylinder 6 is provided with a key insertion hole 63, and a C-ring 64 surrounds and is locked to the wall surface of the lock cylinder 6,wherein a rotating body 65 is arranged below the lock cylinder 6 and is provided with a through hole 650 serving to receive the rotation axis 60 of the lock cylinder 6, wherein the wall surface of the rotating body 65 is provided with an arcuate groove 651 and the wall surface of the rotating body 65 is further provided with a second slot 652 continuously connected to the through hole 650 and the rotating body 65 is provided with an insertion hole 653, wherein a torsion spring 66 is arranged between the lock cylinder 6 and the rotating body 65 and one torsion spring end 660 is inserted into the insertion hole 62 located on the underside of the lock cylinder 6 and the other torsion spring end 661 is inserted into the insertion hole 653 of the rotating body 65, wherein a locking lever 67 is arranged below the rotating body 65 and a protruding body 670 is on the top side of the locking lever 67 and is located in the recessed hole 61 of the locking cylinder 6,wherein the protruding body 670 is provided with a pin hole 671 and correspondingly, the wall surface of the lower end of the locking lever 67 is provided with a slot 672, wherein a first pin 68 is passed through the second slot 652 of the rotating body 65 and the second slot 601 of the lock cylinder 6 and inserted into the pin hole 671 of the locking lever 67; an upper fastening seat 7 arranged above the lock body 2 and provided with a through hole 70 and two through holes 71, wherein a screw 72 is inserted through each of the corresponding through holes 71 of the upper fastening seat 7, and a connecting piece 73 serving to connect to a dust cover 74 and to cover the upper fastening seat 7 is arranged on one side of the upper fastening seat 7; a chain 8,One chain end 80 of which is secured in the first slot 24 of the lock body 2 and the other chain end 81 of which is located in the second slot 31 of the rotating base 3, the outer side of the chain 8 being provided with a covering 82. In this way, a chain lock structure is formed.
[0010] It is based on the Fig. 3 to 6. During assembly, the locking seat 35 is arranged in the through hole 30 located below the rotary base 3, so that the locking seat 35 is struck and thus positioned by the stop edge 33 located in the through hole 30 of the rotary base 3. Then, the lower fixing seat 4 is assembled below the rotary base 3, so that the bottom of the locking seat 35 is arranged in the recess 40 of the lower fixing seat 4 and is screwed into the screw holes 34 of the rotary base 3 by means of the screws 42 inserted through the through holes 41 of the lower fixing seat 4, in order to fix the locking seat 35 in the through hole 30 located below the rotary base 3. The lower fixing seat 4 is fixed below the rotary base 3, and the lock body 2 is arranged above and combined with the rotary base 3.Because the locking edge 32 located on the upper side of the rotating base 3 engages with the locking groove 25 located on the underside of the lock body 2 (cf. . Fig. 5 and Fig. 6), the rotary base 3 can be arranged below the lock body 2 and rotated. Furthermore, one end of the torsion spring 660 is inserted into the insertion hole 62 located on the underside of the lock cylinder 6, and the other end of the torsion spring 661 is inserted into the insertion hole 653 of the rotary body 65, so that the torsion spring 66 is arranged between the lock cylinder 6 and the rotary body 65. The rotation axis 60 of the lock cylinder 6 is arranged in the through hole 650 of the rotary body 65, and then the projecting body 670 of the locking lever 67 is arranged in the recessed hole 61 of the lock cylinder 6. By inserting the first pin 68 through the elongated slot 652, 601 of the rotating body 65 or the locking cylinder 6 and through the pin hole 671 of the locking lever 67, the locking cylinder 6, the rotating body 65 and the locking lever 67 can be formed integrally with one another.Subsequently, the lock cylinder 6, the rotating body 65, the torsion spring 66, and the locking lever 67 are arranged together in the receiving chamber 500 and the locking lever recess 510 of the plug rod 5. The C-ring 64 of the lock cylinder 6 is engaged in the positioning ring groove 501 of the plug rod 5, whereby the lock cylinder 6, the rotating body 65, the torsion spring 66, and the locking lever 67 are positioned in the plug rod 5 and cannot fall out. The lock cylinder 6, the torsion spring 66, and the rotating body 65 are arranged in the receiving chamber 500 of the locking seat portion 50. Further, the positioning pin 503 is disposed in the pin hole 502 of the locking seat portion 50, and the arc groove 651 of the rotating body 65 is aligned with the position of the first steel ball hole 504 of the locking seat portion 50.The positioning steel ball 505 is placed in the first steel ball hole 504 of the locking seat portion 50, a portion of the positioning steel ball 505 is located in the arcuate groove 651 of the rotating body 65, and the torsion spring 66 has a torsional force due to rotation by the lock cylinder 6 and the rotating body 65. The two locking steel balls 512 are inserted into the respective second steel ball holes 511 of the plug portion 51. The slots 672 of the locking lever 67 are aligned with the second steel ball holes 511 of the plug rod 5, so that a portion of each locking steel ball 512 is located in the corresponding slot 672 of the locking lever 67. Subsequently, the plug portion 51 of the plug rod 5 is surrounded by the compression spring 52, and a chain end 80 is placed in the first slot 24 of the lock body 2.Subsequently, the plug rod 5 is arranged in the receiving recess 20 and the through-hole 23 of the lock body 2, wherein the lower end of the compression spring 52 abuts the bottom surface of the receiving recess 20 and the upper end of the compression spring 52 abuts the underside of the locking seat portion 50 of the plug rod 5, and the outer end of the positioning pin 503 located on the wall surface of the locking seat portion 50 of the plug rod 5 is arranged in the guide groove 21 of the lock body 2, whereby the plug rod 5 cannot be rotated in the lock body 2 and can only be moved up and down. The plug section 51 of the plug rod 5 is inserted through the through-hole 23 of the lock body 2 and projects into a chain end 80, whereby a chain end 80 is fastened by the plug section 51 of the plug rod 5 in the first slot 24 of the lock body 2. Then the upper fastening seat 7 is above.of the lock body 2, and two screws 72 are inserted through the respective through holes 71 of the upper mounting seat 7 and screwed into the respective screw holes 26 of the lock body 2. The locking seat portion 50 of the plug rod 5 protrudes from the through hole 70 of the upper mounting seat 7. Thus, the overall assembly is completed.
[0011] It is based on the Fig. 4 to 10. In use, the chain 8 according to the invention is placed around an object to be connected, such as the frame or wheel of a bicycle, then the other chain end 81 is inserted into the second slot 31 of the rotating base 3, whereby the other chain end 81 is aligned with the through-hole 23 of the lock body 2 and is located at the position of the plug-in recess 350 provided in the locking seat 35 of the rotating base 3 (cf. Fig. 4 to 6). Subsequently, the locking seat section 50 of the plug-in rod 5 protruding above the lock body 2 is pressed into the lock body 2 (cf. Fig. 7 to 9), wherein the plug rod 5 is moved toward the interior of the lock body 2 and the positioning pin 503 of the plug rod 5 is moved within the guide groove 21 of the lock body 2, and the positioning steel ball 505 is moved together with the plug rod 5. When the positioning steel ball 505 is moved to the positioning slot 22 of the lock body 2, the positioning steel ball 505 no longer abuts against the wall surface of the receiving recess 20 of the lock body 2 and is thus no longer held by it, whereby the positioning steel ball 505 can be moved to the positioning slot 22 of the lock body 2 and is no longer located in the arc groove 651 of the rotating body 65.At this time, the torsion spring 66 elastically compresses and the rotary body 65 is driven to rotate, whereby the positioning steel ball 505 is pushed outward by the wall surface of the rotary body 65, and thus a part of the positioning steel ball 505 protrudes outward and protrudes into the positioning slot 22 of the lock body 2, wherein the plug rod 5 is moved to the inside of the lock body 2 and presses the compression spring 52 to bring the compression spring 52 into an elastically compressed state. The lower end of the plug-in section 51 of the plug-in rod 5 inserted through the through-hole 23 of the lock body 2 is inserted through the other chain end 81 and inserted into the plug-in recess 350 of the locking seat 35 located in the rotary base 3, wherein the locking steel balls 512 of the plug-in rod 5 are aligned with the locking ring groove 351 of the locking seat 35 located in the rotary base 3.While the rotating body 65 is driven to rotate by the elastic compression of the torsion spring 66, the lower locking lever 67 is also rotated and the slot 672 of the locking lever 67 is rotated away from the second steel ball holes 511 of the plug rod 5 and the two locking steel balls 512 are pressed outwards by the wall surface of the locking lever 67, whereby a part of the respective locking steel balls 512 protrudes outwards from the plug rod 5 and is engaged in the locking ring groove 351 of the locking seat 35 (cf. . Fig. 8), then the upper mounting seat 7 is covered by the dust cover 74. In this way, the locking operation can be performed without using a key, which is very convenient for locking. In the present invention, one chain end 80 is directly fixed in the first slot 24 of the lock body 2 by means of the plug rod 5, whereby the lateral volume of the lock body 2 can be reduced, and further, the other chain end 81 can be stably locked in the second slot 31 of the rotary base 3 by engaging and positioning the locking steel balls 512 and by inserting and engaging the plug rod 5 (see FIG. Fig. 7 and Fig. 8), thereby achieving an excellent anti-theft function. In the present invention, the rotating base 3 is designed to be adjustable at any angle and rotated at the bottom of the lock body 2. The user can adjust the relative locking angles between the second slot 31 of the rotating base 3 and the first slot 24 of the lock body 2 according to the space of the object to be connected (see FIG. Fig. 9 and Fig. 10) to prevent the locking operation from being completed due to space constraints when locking an object to be connected. Covering it with the dust cover 74 prevents dirt and water from entering the key insertion hole 63. The invention is therefore more convenient to use.
[0012] When unlocking, only the key needs to be inserted into the key insertion hole 63 of the lock cylinder 6, whereby the rotation axis 60 of the lock cylinder 6 is driven to rotate by the key and the rotating body 65 and the locking lever 67 move with the rotation axis 60 of the lock cylinder 6, whereby the torsion spring 66 is rotated and thus has a torsional force and the slot 672 of the locking lever 67 is again aligned with the position of the second steel ball holes 511 of the plug rod 5.Since the locking steel balls 512 engaged in the locking ring groove 351 of the engagement seat 35 are no longer in contact with the outer wall of the locking lever 67 and are thus no longer held by it, they can be moved inward toward the second steel ball holes 511 of the plug rod 5 and toward the inside of the slot 672 of the locking lever 67 and are no longer engaged in the locking ring groove 351 of the engagement seat 35, wherein the arcuate groove 651 of the rotary body 65 is again aligned with the position of the first steel ball hole 504 of the plug rod 5, whereby the positioning steel ball 505 can be moved toward the inside of the arcuate groove 651 and is no longer engaged in the positioning slot 22 of the lock body 2. At the same time, the compression spring 52 arranged in the receiving recess 20 of the lock body 2 springs elastically in order to press the plug rod 5 upwards (cf. . Fig.5), whereby the upper portion of the locking seat portion 50 protrudes outward from the upper fastening seat 7, and the plug rod 5 is pushed and moved upward by the compression spring 52 and released from the rotary base 3, the plug recess 350 of the locking seat 35, and the other chain end 81, so that the other chain end 81 can be removed from the second slot 31 of the rotary base 3. Thus, the unlocking operation is completed. In locking, the use of the present invention is not limited by the size of the space, making the connection of objects more convenient. The invention can be used to connect and position any object and provides an excellent anti-theft function.
[0013] In summary, it can be stated that the present invention actually achieves the stated objective and the desired advantageous effects, and the present invention is superior to the conventional technology. The above description represents only preferred embodiments of the invention and is not intended to limit the claims. All equivalent changes and modifications that can be made by one skilled in the art in accordance with the description and drawings of the invention are within the scope of the present invention. QUOTES CONTAINED IN THE DESCRIPTION
[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature
[0000] CN 1 10 005 277 A
[0003] CN 1 11 502 435 A
[0004]
Claims
[1] Chain lock (1), comprising: a lock body (2), wherein the lock body (2) is provided with a receiving recess (20) and the wall surface of the receiving recess (20) is provided with at least one guide groove (21) and a positioning slot (22), and the bottom of the lock body (2) is provided with a through-hole (23) continuously connected to the receiving recess (20), and the wall surface of the lock body (2) is provided with a first slot (24) continuously connected to the through-hole (23), and the underside of the lock body (2) is provided with a locking groove (25), and the top side of the lock body (2) is provided with two screw holes (26); a rotary base (3) arranged below the lock body (2) and provided with a through-hole (30), wherein the wall surface of the rotary base (3) is provided with a second slot (31) continuously connected to the through-hole (30), and a locking edge (32) engaging with the locking groove (25) of the lock body (2) is provided protrudingly on the upper edge of the through-hole (30) of the rotary base (3), and a stop edge (33) is provided within the through-hole (30) of the rotary base (3) on the bottom surface of the second slot (31), and the underside of the rotary base (3) is provided with two screw holes (34), wherein a locking seat (35) is arranged in the through-hole (30) of the rotary base (3) and is provided with a plug-in recess (350), wherein the wall surface of the plug-in recess (350) is provided with a locking ring groove (351); a lower fastening seat (4) arranged below the rotary base (3) and the locking seat (35) and provided with a recess (40) and two through holes (41), wherein a screw (42) is passed through the corresponding through hole (41) of the lower fastening seat (4) and screwed into the respective screw hole (34) of the rotary base (3); a plug-in rod (5) arranged in the receiving recess (20) of the lock body (2) and inserted through the through-bore (23) and the through-hole (30) of the rotary base (3) and designed as a locking seat section (50) and plug-in section (51),wherein a receiving chamber (500) is provided in the locking seat portion (50), and the inner wall of the receiving chamber (500) of the locking seat portion (50) is provided with a positioning ring groove (501), and the wall surface of the locking seat portion (50) is provided with a pin hole (502) and a first steel ball hole (504), and a positioning pin (503) is arranged in the pin hole (502), and a positioning steel ball (505) is arranged in the first steel ball hole (504), and a locking lever recess (510) continuously connected to the receiving chamber (500) is provided in the plug-in portion (51), and the wall surface of the plug-in portion (51) is provided with two second steel ball holes (511) continuously connected to the locking lever recess (510), and a locking steel ball (512) is arranged in each second steel ball hole (511). is,wherein a compression spring (52) surrounds the plug-in section (51) of the plug-in rod (5) and is located in the receiving recess (20) of the lock body (2);, a lock cylinder (6) arranged in the receiving chamber (500) of the locking seat portion (50) of the plug-in rod (5), wherein a rotation axis (60) is arranged on the underside of the lock cylinder (6), and the bottom of the rotation axis (60) is provided with a recessed hole (61), and the wall surface of the rotation axis (60) is provided with an elongated slot (601) continuously connected to the recessed hole (61), and the underside of the lock cylinder (6) is further provided with an insertion hole (62), and the top side of the lock cylinder (6) is provided with a key insertion hole (63), and a C-ring (64) surrounds and is locked to the wall surface of the lock cylinder (6) and is locked into the positioning ring groove (501) of the plug-in rod (5), wherein a rotating body (65) is arranged below the lock cylinder (6) and is provided with a housing for receiving the rotation axis (60) of the is provided with a through hole (650) serving as the locking cylinder (6),wherein the wall surface of the rotating body (65) is provided with an arcuate groove (651) and the wall surface of the rotating body (65) is further provided with an elongated slot (652) continuously connected to the through hole (650), and the rotating body (65) is provided with an insertion hole (653), wherein a torsion spring (66) is arranged between the lock cylinder (6) and the rotating body (65), and one torsion spring end (660) is inserted into the insertion hole (62) located on the underside of the lock cylinder (6) and the other torsion spring end (661) is inserted into the insertion hole (653) of the rotating body (65), wherein a locking lever (67) is arranged below the rotating body (65), and a projecting body (670) is arranged on the top side of the locking lever (67) and is located in the recessed hole (61) of the locking cylinder (6) is located,wherein the projecting body (670) is provided with a pin hole (671) and correspondingly the wall surface of the lower end of the locking lever (67) is provided with a slot (672), wherein a first pin (68) is passed through the elongated slot (652) of the rotating body (65) and the elongated slot (601) of the lock cylinder (6) and inserted into the pin hole (671) of the locking lever (67);, an upper fastening seat (7) arranged above the lock body (2) and provided with a through hole (70) for passing through the locking seat portion (50) of the plug rod (5) and two through holes (71), wherein a screw (72) is passed through each of the corresponding through holes (71) of the upper fastening seat (7) and screwed into the corresponding screw hole (26) of the lock body (2), and a connecting piece (73) for connecting to a dust cover (74) is arranged on one side of the upper fastening seat (7); a chain (8), wherein one chain end (80) is fastened in the first slot (24) of the lock body (2) and the other chain end (81) is inserted into the second slot (31) of the rotating base (3) and the outside of the chain (8) is provided with a covering (82).
Citation Information
Patent Citations
Chain lock
CN110005277A
Chain lock
CN111502435A