Length-adjustable double-unlocking lock cylinder

Abstract

The utility model discloses a length-adjustable double-unlocking lock cylinder, which relates to the field of locksets and comprises an outer shell, inner shells which are arranged at two ends of the outer shell in a sliding manner and can realize position adjustment, lock liners which are arranged in the inner shells and are used for inserting keys, and a dial wheel mechanism which is arranged in the middle of the outer shell, wherein the lock cylinder on one side is in linkage connection with the dial wheel mechanism after a key is inserted, and extension frames which are in linkage connection with each other and used for being matched with the lock cylinder in any length are arranged between the dial wheel mechanism and the lock cylinder. The utility model has the advantages of simple structure and good practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lockset, concretely relates to a length adjustable double open lock core. BACKGROUND

[0002] The double open lock in prior art like the lock core of adjustable telescopic length disclosed in the publication number CN223269752U disclosed on the publication date 2025-08-26, one side is started through the key, the other side is unlocked through the handle, the use scene of this structure is more limited, if the lock core both sides are set to key unlocking, then the dial mechanism needs to be redesigned, so that it can adapt to the adjustable length of the lock core, and can adapt to the key unlocking on both sides, so there is an urgent need for such a double open lock core. UTILITY MODEL CONTENTS

[0003] In order to overcome the deficiencies of the background art, the utility model provides a length adjustable double open lock core with simple structure and good practicality.

[0004] The utility model employs the technical scheme: a length adjustable double open lock core, it includes the shell body, the inner shell body of sliding installation in the both end position of shell body and can realize position adjustment, install in the inner shell body and the lock core for key insertion and install in the middle position of shell body dial mechanism, one side lock core is connected with dial mechanism linkage after key insertion, the extension frame that is used for adapting lock core arbitrary length is equipped with in dial mechanism and lock core between the linkage connection.

[0005] The dial mechanism includes a dial, a linkage frame disposed axially on both sides of the dial, and a linkage shaft disposed axially through the dial and the linkage frame.

[0006] The extension frame is provided with a sliding block installed axially, and the sliding block can be pushed by the keys on both sides to transmit the force to the linkage shaft to make the linkage shaft slide left and right in the dial; the linkage shaft has a first state of moving left to realize the linkage connection of the lock core, the linkage frame and the dial in the right region of the outer shell body, and a second state of moving right to realize the linkage connection of the lock core, the linkage frame and the dial in the left region of the outer shell body.

[0007] The sliding block is cylindrical and provided with a first limiting groove arranged in the length direction, and the extension frame is provided with a first positioning pin inserted into the first limiting groove.

[0008] The first limiting groove is arranged on the upper and lower surfaces of the sliding block or penetrates through the upper and lower surfaces of the sliding block.

[0009] The sliding block is cylindrical and the upper and lower sides of the peripheral surface thereof are provided with elastically mounted second positioning pins, and the inner wall surface of the extension frame is provided with a second limiting groove for inserting the second positioning pins.

[0010] The extension frame is in the shape of a hollow shaft, and the extension frame is in gear slot linkage with the lock cylinder and the linkage frame gear slot at both ends.

[0011] The linkage frame is in the shape of a hollow shaft, and the linkage frame is in gear slot linkage with the linkage shaft at one end and the extension frame at the other end, the linkage shaft is inserted into the linkage frame and the end surface of the linkage shaft is in contact with the end surface of the sliding block, and the inner hole of the handle is in gear slot linkage with the linkage shaft.

[0012] The linkage shaft comprises a mandrel and two rotating shafts rotatably installed on the mandrel, and the circumferential surface of each rotating shaft is provided with a plurality of first mounting ears, and the inner hole of the handle is provided with a second mounting groove matched with the first mounting ear.

[0013] The outer shell and the inner shell are provided with an adjusting mechanism for adjusting the extension length of the inner shell, and the end of the outer shell is provided with an opening and a mounting groove for sliding installation of the inner shell.

[0014] The adjusting mechanism comprises:

[0015] A through hole is provided on the upper surface of the outer shell.

[0016] A fastener is in threaded cooperation with the through hole, and the bottom of the fastener is in contact with the upper surface of the inner shell after penetrating through the through hole.

[0017] The number of through holes is at least one, and the through holes are arranged linearly.

[0018] One end of the inner shell exposed outside the outer shell is provided with a baffle, and one end of the inner shell hidden in the mounting groove is provided with a stop block, the baffle is in contact with the end surface of the outer shell after the inner shell is completely retracted into the outer shell, and the bottom of the fastener is located in the movement path of the stop block when the inner shell is extended out of the outer shell.

[0019] The inner shell of the technical scheme can be adjusted in position in the outer shell, and appropriate extension length is selected according to different door plate thickness, when a key is inserted on one side, the key can push the handle mechanism, the handle mechanism is in linkage connection with the lock cylinder, the lock cylinder on the other side is disconnected from the linkage connection with the handle mechanism, both keys can unlock the lock cylinder, and the extension frame can adapt to lock cylinders of different lengths, and has the advantages of simple structure and good practicability. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a structural schematic view of the adjustable length double-opening lock cylinder.

[0021] Figure 2 It is a sectional view of the adjustable length double-opening lock cylinder.

[0022] Figure 3 Structure diagram of linkage frame, extension frame and sliding block.

[0023] Figure 4 Structure diagram of linkage frame, extension frame and sliding block.

[0024] Figure 5 Structure diagram of extension frame.

[0025] Figure 6 Structure diagram of linkage frame.

[0026] Figure 7 Structure diagram of embodiment two. DETAILED DESCRIPTION

[0027] The embodiments of the utility model will be further described below with reference to the drawings:

[0028] As shown in the figure, a length-adjustable double-opening lock cylinder comprises an outer shell 1, an inner shell 2 slidably installed at both ends of the outer shell 1 and capable of realizing position adjustment, a lock barrel 6 installed in the inner shell 2 and used for key insertion, and a dial mechanism installed at the middle position of the outer shell 1; the lock barrel on one side is connected with the dial mechanism in linkage after the key is inserted; the dial mechanism and the lock barrel 6 are connected with each other in linkage and used for adapting the length of the lock cylinder; the inner shell of the technical solution can be adjusted in position in the outer shell, and appropriate telescopic length is selected according to different door plate thicknesses; after the key is inserted on one side, the key can push the dial mechanism, the dial mechanism and the lock barrel are connected in linkage, and the lock barrel on the other side is disconnected from the dial mechanism in linkage; both sides of the key can unlock the lock cylinder, and the extension frame can adapt to lock cylinders of different lengths, having the advantages of simple structure and good practicability.

[0029] The size of the extension frame can be selected according to actual conditions, or the extension frame can be selected according to conditions, and the linkage frame and the lock barrel can also be directly connected in linkage.

[0030] The dial mechanism comprises a dial 3, linkage frames 4 arranged on both sides of the dial 3 in the axial direction, and a linkage shaft 5 arranged in the dials 3 and the linkage frames 4 in the axial direction; in the case that no extension frame is added, the key is inserted from one side of the lock cylinder, the end of the key pushes the linkage shaft to move, the moved linkage shaft connects the dial, the lock barrel and the linkage frame in linkage, after the key is rotated, the lock barrel, the linkage frame and the dial are synchronously rotated; similarly, the key is inserted from the other side of the lock cylinder, and the same action principle is realized.

[0031] The extension frame 7 is provided with a sliding block 9 which slides along the axial direction, the sliding block 9 can be pushed by the keys on both sides to transmit the force to the linkage shaft 5 so that the linkage shaft 5 slides left and right in the dial 3; the linkage shaft 5 has a first state of moving to the left to realize the linkage connection of the lock cylinder 6, the linkage frame 4 and the dial 3 in the right area of the outer shell 1, and a second state of moving to the right to realize the linkage connection of the lock cylinder 6, the linkage frame 4 and the dial 3 in the left area of the outer shell 1; when the key is inserted into the lock cylinder, the end of the key pushes the sliding block and the linkage shaft to move, the linkage shaft after moving links the dial and the linkage frame, the linkage frame is linked with the lock cylinder through the extension frame, after the key is turned, the lock cylinder, the extension frame and the dial are synchronously turned; similarly, when the key is inserted into the other side of the lock cylinder, the same action principle is realized.

[0032] The sliding block 9 is in a columnar shape and is provided with a first limiting groove 61 arranged along the length direction, the extension frame 7 is provided with a first positioning pin 41 inserted into the first limiting groove 61; the sliding range of the sliding block can be limited, and the mounting structure of the sliding block has multiple embodiments in the technical solution.

[0033] Embodiment one: the first limiting groove 61 is arranged on the upper and lower surfaces of the sliding block 9 or penetrates through the upper and lower surfaces of the sliding block 9, as shown in Figure 4 .

[0034] Embodiment two: the sliding block 9 is in a columnar shape and is provided with a second positioning pin 62 elastically arranged on the upper and lower sides of the circumferential surface, the inner wall of the extension frame 7 is provided with a second limiting groove 63 for the second positioning pin 62 to be inserted into, as shown in Figure 7 .

[0035] The extension frame 7 is in a hollow shaft shape, the two ends of the extension frame 7 are respectively linked with the lock cylinder 6 and the linkage frame 4 through the tooth groove linkage; the linkage frame 4 is in a hollow shaft shape, one end of the linkage frame 4 is linked with the linkage shaft 5 through the tooth groove linkage, the other end of the linkage frame 4 is linked with the extension frame 7 through the tooth groove linkage, the linkage shaft 5 is inserted into the linkage frame 4 and the end surface of the linkage shaft 5 is in contact with the end surface of the sliding block 9, the inner hole of the dial 3 is linked with the linkage shaft 5 through the tooth groove linkage; as shown in Figure 3 , Figure 4 and Figure 6 , one end of the linkage frame close to the extension frame, the extension frame and the lock cylinder is respectively provided with a plurality of grooves arranged along the circumferential direction, the other end of the linkage frame and the extension frame is respectively provided with a plurality of convex teeth arranged along the circumferential direction, the grooves of the linkage frame are meshed with the convex teeth of the extension frame, the grooves of the extension frame are meshed with the convex teeth of the lock cylinder, so that the linkage frame, the extension frame and the lock cylinder are firmly connected, and the connection mode also has the advantages of convenient disassembly and assembly, when the installation is completed, the groove teeth are corresponded, and the parts are in the inner shell, so that the disassembly and separation of the parts will not occur.

[0036] In addition, if the extension frame is removed, the notches of the linkage frame can directly engage with the protrusions of the lock cylinder.

[0037] The extension frame is in the shape of a hollow shaft, the sliding block can directly slide in the extension frame, and the end of the key can contact the end face of the sliding block.

[0038] The linkage shaft 5 comprises a mandrel 51 and two rotating shafts 52 rotatably installed on the mandrel 51, the circumferential surface of each rotating shaft 52 is provided with a plurality of first mounting ears 53, and the inner hole of the dial 3 is provided with a second mounting groove 54 matched with the first mounting ears 53; each first mounting ear of the rotating shaft is embedded between adjacent two protrusions of the linkage frame, so as to form a tooth-groove linkage, and the first mounting ears on one rotating shaft are simultaneously connected with the dial and the linkage frame.

[0039] The outer shell 1 and the inner shell 2 are provided with an adjusting mechanism 8 for adjusting the extension length of the inner shell 2, and the end of the outer shell 1 is provided with an installation groove 11 which is open and in which the inner shell 2 is slidingly installed.

[0040] The adjusting mechanism 8 comprises:

[0041] A through hole 81 is arranged on the upper surface of the outer shell 1.

[0042] A fastener 82 is threadedly matched with the through hole 81, and the bottom of the fastener 82 is in contact with the upper surface of the inner shell 2 after penetrating through the through hole 81.

[0043] The number of the through holes 81 is at least one, and the through holes 81 are linearly arranged.

[0044] The lock shell is divided into an outer shell and an inner shell, the inner shell can realize two actions of extension and retraction in the installation groove of the outer shell, and the extension length of the inner shell can be adjusted by the adjusting mechanism, so that the lock shell can perfectly adapt to door plates with different thicknesses, and has the advantages of simple structure and convenient adjustment; the fastener is a bolt, after the extension length of the inner shell is manually adjusted, the bolt is screwed to make the bolt descend in the through hole until the bottom abuts against the upper surface of the inner shell, and the bolt is tightened, so that the position of the inner shell is locked.

[0045] In the embodiment, the number of the through holes can be selected according to the actual installation condition, and the installation position of the bolt can also be selected according to the actual installation condition.

[0046] The inner shell 2 is provided with a baffle 21 at one end exposed outside the outer shell 1, and is provided with a stopper 22 at one end hidden in the mounting groove 11, the baffle 21 is in contact with the end surface of the outer shell 1 after the inner shell 2 is completely retracted into the outer shell 1, and the bottom of the fastener 82 is located on the movement path of the stopper 22 when the inner shell 2 is extended out of the outer shell 1; the contact between the baffle and the end surface of the outer shell represents that the inner shell is retracted to the position, at this time, the length of the lock cylinder is the shortest, after loosening the fastener, the inner shell is manually pulled out, and after being adjusted to the appropriate length, the bolt is tightened to lock the position of the inner shell;

[0047] When the inner shell is pulled out to the maximum length, the stopper is in contact with the bottom of the bolt, thereby limiting the inner shell from continuing to extend outward.

[0048] In addition, when the fastener selects different position through holes for installation, the inner shell has different limit extension lengths, and has the advantages of convenient adjustment and good practicability.

[0049] In the description of the utility model, it needs to be explained that the orientation or position relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the utility model. In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0050] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances. In addition, in the description of the utility model, unless otherwise stated, the meaning of "multiple" is two or more.

[0051] Skilled persons should know that although the utility model has been described according to the above specific embodiments, the utility model idea of the utility model is not limited to this utility model, and any modification using the utility model idea will be included in the protection scope of the patent.

Claims

1. An adjustable length, double throw lock cylinder characterized by: It includes an outer shell (1), an inner shell (2) which is slidingly installed at both ends of the outer shell (1) and can realize position adjustment, a lock cylinder (6) which is installed in the inner shell (2) and is used for key insertion, and a dial mechanism which is installed at the middle position of the outer shell (1); one side of the lock cylinder is connected with the dial mechanism after the key is inserted, and an extension frame (7) which is connected with each other and is used for adapting to the length of the lock cylinder is arranged between the dial mechanism and the lock cylinder (6).

2. The adjustable length, double throw lock cylinder of claim 1, wherein: The dial mechanism includes a dial (3), a linkage frame (4) which is arranged on both sides of the dial (3) in the axial direction, and a linkage shaft (5) which is arranged in the axial direction and penetrates the dial (3) and the linkage frame (4).

3. The adjustable length, double throw lock cylinder of claim 2, wherein: The extension frame (7) is provided with a sliding block (9) which is slidingly installed in the axial direction, the sliding block (9) can be pushed by the keys on both sides to transmit the force to the linkage shaft (5) to make the linkage shaft (5) slide left and right in the dial (3); the linkage shaft (5) has a first state of moving to the left to realize the linkage connection of the lock cylinder (6), the linkage frame (4) and the dial (3) in the right part of the outer shell (1), and a second state of moving to the right to realize the linkage connection of the lock cylinder (6), the linkage frame (4) and the dial (3) in the left part of the outer shell (1).

4. The adjustable length, double throw lock cylinder of claim 3, wherein: The sliding block (9) is in a columnar shape and is provided with a first limiting groove (61) which is arranged in the length direction, and the extension frame (7) is provided with a first positioning pin (41) which is inserted into the first limiting groove (61).

5. An adjustable length, double throw lock cylinder according to claim 4, wherein: The first limiting groove (61) is arranged on the upper and lower surfaces of the sliding block (9) or penetrates the upper and lower surfaces of the sliding block (9).

6. The adjustable length, double throw lock cylinder of claim 4 wherein: The sliding block (9) is in a columnar shape, and the upper and lower sides of the circumferential surface of the sliding block (9) are provided with a second positioning pin (62) which is elastically installed, and the inner wall of the extension frame (7) is provided with a second limiting groove (63) for the insertion of the second positioning pin (62).

7. The adjustable length, double throw lock cylinder of claim 2, wherein: The extension frame (7) is in a hollow shaft shape, and the two ends of the extension frame (7) are respectively connected with the lock cylinder (6) and the linkage frame (4) in a tooth groove linkage manner.

8. The adjustable length, double throw lock cylinder of claim 2, wherein: The linkage frame (4) is in a hollow shaft shape, one end of the linkage frame (4) is connected with the linkage shaft (5) in a tooth groove linkage manner, the other end of the linkage frame (4) is connected with the extension frame (7) in a tooth groove linkage manner, the linkage shaft (5) is inserted into the linkage frame (4), and the end surface of the linkage shaft (5) is in contact with the end surface of the sliding block (9), and the inner hole of the dial (3) is connected with the linkage shaft (5) in a tooth groove linkage manner.

9. The adjustable length, double throw lock cylinder of claim 2, wherein: The linkage shaft (5) includes a mandrel (51) and two rotating shafts (52) which are rotatably installed on the mandrel (51), the circumferential surface of each rotating shaft (52) is provided with a plurality of first installation ears (53), and the inner hole of the dial (3) is provided with a second installation groove (54) which is matched with the first installation ear (53).

10. The adjustable length, double throw lock cylinder of claim 1, wherein: The outer shell (1) and the inner shell (2) are provided with an adjusting mechanism (8) which is used for adjusting the extension length of the inner shell (2), and the end position of the outer shell (1) is provided with an opening and an installation groove (11) for slidingly installing the inner shell (2); The adjusting mechanism (8) includes: a through hole (81) which is arranged on the upper surface of the outer shell (1); a fastener (82) threadedly engaged with the through hole (81) and having a bottom portion in contact with an upper surface of the inner housing (2) after penetrating through the through hole (81); the number of the through holes (81) is at least one, and the through holes (81) are arranged in a line; an end of the inner housing (2) exposed outside the outer housing (1) is provided with a baffle (21), and an end of the inner housing (2) hidden in the mounting groove (11) is provided with a stop block (22), the baffle (21) is in contact with an end surface of the outer housing (1) after the inner housing (2) is completely retracted into the outer housing (1), and the bottom portion of the fastener (82) is located on a movement path of the stop block (22) when the inner housing (2) is extended out of the outer housing (1).

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