A length-adjustable lock cylinder

Abstract

This utility model discloses an adjustable lock cylinder, including a first lock shell, a toggle member, an extension body, and a second lock shell. The extension body is detachably connected to the second lock shell via a first screw. The lock cylinder also includes a connecting rod extending axially. The connecting rod has a first countersunk hole and a second countersunk hole. The first countersunk hole is connected to the first lock shell via a second screw, and the second countersunk hole is connected to the second lock shell via a third screw. The connecting rod has at least two threaded holes for connection with the door body. When installing the lock cylinder, the appropriate threaded hole can be selected according to the door body's hole position, reducing installation misalignment and improving installation accuracy. This utility model allows for adjustment of the overall length of the lock cylinder by selecting an extension body and connecting rod of suitable length, thus adapting the lock cylinder to door bodies of different thicknesses, expanding its applicability, and eliminating the need to develop and purchase specialized locks for door bodies of different thicknesses, thereby saving costs.

Description

Technical Field

[0001] This utility model relates to the field of lock equipment, and in particular to a lock cylinder with adjustable length. Background Technology

[0002] In the field of door locks, the lock cylinder, as a core component, directly affects the overall user experience and security of the door lock. However, existing lock cylinder technologies have many limitations and struggle to meet diverse practical needs.

[0003] Traditional lock cylinders typically have a fixed length. However, in real-world applications, door thicknesses vary significantly, ranging from thinner interior doors to thicker security doors. A fixed-length lock cylinder cannot accommodate all these different door thicknesses. This means that if the door thickness doesn't match the lock cylinder length during installation, replacing it with a cylinder of the appropriate length is usually necessary, increasing installation costs and wasting time and effort.

[0004] To address the aforementioned issues, adjustable-length lock cylinders have emerged on the market. For example, Chinese patent CN215108048U discloses an adjustable-length lock cylinder. By adding or removing adapters to the first and second copper sleeves, the length of the lock cylinder can be adjusted to accommodate door thicknesses. The lock cylinder also includes a connecting rod. In this lock cylinder, the first and second copper sleeves, adapters, and other accessories are all fixedly connected to the connecting rod with screws. This results in the connecting rod having multiple countersunk holes for connecting to the lock cylinder components, leaving very little space for the installation structure connecting to the door. See the instruction manual for CN215108048U. Figure 2 As shown, the connecting rod only has one threaded hole. During on-site installation, due to errors in door dimensions or deviations in construction operations, there may be slight misalignment between the threaded hole and the door hole. The single threaded hole design lacks adjustment flexibility; once the hole position is mismatched, it is necessary to re-drill or modify the connecting rod structure, which is inconvenient for installation.

[0005] In view of this, the present invention proposes a lock cylinder with adjustable length to solve the above problems. Summary of the Invention

[0006] In order to overcome the shortcomings of the above-mentioned technology, this utility model provides a lock cylinder that is not only adjustable in length, but also has at least two threaded holes, which can be selected to connect with the door body, reducing the possibility of installation position deviation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] An adjustable lock cylinder comprises, axially, a first lock housing, an actuating element, an extension body, and a second lock housing. The first lock housing has a first mounting hole extending axially through it. A first lock cylinder is installed in the first mounting hole and is kinetically connected to the actuating element. The extension body is detachably connected to the second lock housing by a first screw. The second lock housing has a second mounting hole extending axially through it, in which a second lock cylinder is installed. The extension body has a through hole for kinetically connecting the actuating element and the second lock cylinder. The lock cylinder further includes a connecting rod extending axially. The connecting rod has a first countersunk hole and a second countersunk hole. The first countersunk hole is connected to the first lock housing by a second screw, and the second countersunk hole is connected to the second lock housing by a third screw. The connecting rod has at least two threaded holes for connecting to a door.

[0009] Preferably, the threaded hole is located between the first countersunk hole and the second countersunk hole.

[0010] Preferably, the spacing between adjacent threaded holes is 3~10mm.

[0011] Preferably, the first lock housing extends radially outward to form a first boss, the first boss is provided with a first positioning groove, and the end of the connecting rod facing the first boss is provided with a first positioning block, the first positioning block being inserted into the first positioning groove.

[0012] Preferably, the first boss has a first recess at one end facing the second lock housing, the connecting rod has a first countersunk hole portion placed in the first recess, the first recess has a first connecting hole, and the first connecting hole and the first countersunk hole are connected by a second screw.

[0013] Preferably, the lock cylinder further includes a positioning pin, the first boss is provided with a first pin hole communicating with the first positioning groove, the first positioning block is provided with a second pin hole, and the positioning pin connects the first pin hole and the second pin hole.

[0014] Preferably, the second lock housing extends radially outward to form a second boss, the second boss is provided with a second positioning groove, and the end of the connecting rod facing the second boss is provided with a second positioning block, the second positioning block being inserted into the second positioning groove.

[0015] Preferably, the second boss has a second recess at one end facing the first lock housing, the connecting rod with a second countersunk hole is placed in the second recess, the second recess has a second connecting hole, and the second connecting hole and the second countersunk hole are connected by a third screw.

[0016] Preferably, the elongated body extends radially outward to form a third boss, and the third boss is connected to the second boss by a first screw.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The extended body of this utility model is detachably connected to the second lock shell, and the connecting rod is detachably connected to the second lock shell and the first lock shell. By selecting an extended body and connecting rod of appropriate length, the overall length of the lock cylinder can be adjusted, thereby adapting the lock cylinder to door bodies of different thicknesses, improving its applicability, eliminating the need to develop and purchase special locks for door bodies of different thicknesses, and helping to save costs.

[0019] 2. The extended body of this utility model is connected to the second lock housing via a first screw, and the second lock housing is connected to the connecting rod via a third screw. This optimizes the connection method between the extended body, the second lock housing, and the connecting rod, reducing the number of countersunk holes on the connecting rod for connection with the lock cylinder components, thus leaving more space for threaded holes. The connecting rod has at least two threaded holes for connection with the door body. When installing the lock cylinder, an appropriate number of threaded holes can be selected according to the door body's hole positions, reducing installation misalignment and improving installation accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the adjustable length lock cylinder of this utility model. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the adjustable length lock cylinder of this utility model. Figure 2 ;

[0022] Figure 3 yes Figure 2 Sectional view at point AA;

[0023] Figure 4 This is an exploded schematic diagram of the adjustable length lock cylinder of this utility model;

[0024] The implementation, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] The following examples provide a more detailed description of the features and other related characteristics of this utility model, to facilitate understanding by those skilled in the art:

[0026] Reference Figures 1-4 This utility model provides an embodiment of a lock cylinder with adjustable length.

[0027] An adjustable length lock cylinder includes, in sequence along the axial direction, a first lock housing 1, an actuating element 2, an extension body 3, and a second lock housing 4. The first lock housing 1 has a first mounting hole 11 extending through the first lock housing 1 along the axial direction; a first lock cylinder 12 is installed in the first mounting hole 11, and the first lock cylinder 12 is throttle-connected to the actuating element 2.

[0028] The extended body 3 is detachably connected to the second lock housing 4 by the first screw 31.

[0029] The second lock housing 4 is provided with a second mounting hole 41 that extends through the second lock housing 4 axially. The second lock cylinder 42 is installed in the second mounting hole 41. The extended body 3 is provided with a through hole 33 for the transmission connection between the actuating member 2 and the second lock cylinder 42.

[0030] The lock cylinder also includes a connecting rod 5 extending axially; the connecting rod 5 is provided with a first countersunk hole 51 and a second countersunk hole 52; the first countersunk hole 51 is connected to the first lock housing 1 by a second screw 53, the second countersunk hole 52 is connected to the second lock housing 4 by a third screw 54, and the connecting rod 5 is provided with at least two threaded holes 55 for connecting to the door body.

[0031] This invention allows for the adjustment of the overall length of the lock cylinder by selecting an extension body 3 and a connecting rod 5 of appropriate length, thereby enabling the lock cylinder to adapt to door bodies of different thicknesses, expanding its applicability, eliminating the need to develop and purchase specialized locks for door bodies of different thicknesses, and saving costs.

[0032] The extended body 3 is connected to the second lock housing 4 by the first screw 31, and the second lock housing 4 is connected to the connecting rod 5 by the third screw 54. This optimizes the connection method between the extended body 3, the second lock housing 4, and the connecting rod 5, reduces the number of countersunk holes on the connecting rod 5 for connecting to the lock cylinder components, and allows the connecting rod 5 to have more space for setting threaded holes 55.

[0033] Threaded holes 55 are located between the first countersunk hole 51 and the second countersunk hole 52. The spacing between adjacent threaded holes 55 is 3~10mm. When installing the lock cylinder, an appropriate number of threaded holes 55 can be selected according to the door body holes to reduce installation misalignment and thus improve installation accuracy. If the door body has multiple holes, threaded holes 55 corresponding to each hole should be selected for connection.

[0034] The first lock housing 1 extends radially outward to form a first boss 12. The first boss 12 is provided with a first positioning groove 13. The end of the connecting rod 5 facing the first boss 12 is provided with a first positioning block 56. The first positioning block 56 is inserted into the first positioning groove 13 to increase the contact area between the first lock housing 1 and the connecting rod 5, thereby improving the connection stability between the first lock housing 1 and the connecting rod 5.

[0035] The first boss 12 has a first recess 15 at one end facing the second lock housing 4. The connecting rod 5 has a first countersunk hole 51 partially placed in the first recess 15, increasing the contact area between the connecting rod 5 and the first lock housing 1 and further improving the connection stability. The first recess 15 has a first connecting hole 16, and the first connecting hole 16 and the first countersunk hole 51 are connected by a second screw 53.

[0036] The lock cylinder also includes a positioning pin 17. The first boss 12 is provided with a first pin hole that communicates with the first positioning groove 13. The first positioning block 56 is provided with a second pin hole 561. The positioning pin 17 connects the first pin hole and the second pin hole 561 to strengthen the connection between the first lock shell 1 and the connecting rod 5.

[0037] The second lock housing 4 extends radially outward to form a second boss 43. The second boss 43 is provided with a second positioning groove 44. The end of the connecting rod 5 facing the second boss 43 is provided with a second positioning block 57. The second positioning block 57 is inserted into the second positioning groove 44 to increase the contact area between the second lock housing 4 and the connecting rod 5, thereby improving the connection stability between the second lock housing 4 and the connecting rod 5.

[0038] The second protrusion 43 has a second recess 45 at one end facing the first lock housing 1. The connecting rod 5 has a second countersunk hole 52 partially placed in the second recess 45, increasing the contact area between the connecting rod 5 and the second lock housing 4 and further improving the connection stability. The second recess 45 has a second connecting hole 46, and the second connecting hole 46 and the second countersunk hole 52 are connected by a third screw 54.

[0039] The elongated body 3 extends radially outward to form a third boss 32, and the third boss 32 is connected to the second boss 43 by a first screw 31.

[0040] In this embodiment, the first lock cylinder 12 is activated by a key, and the second lock cylinder 42 is activated by a transmission rod 421.

[0041] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A lock cylinder with adjustable length, characterized in that, The lock assembly includes, in sequence along the axial direction, a first lock housing (1), an actuating element (2), an extension body (3), and a second lock housing (4). The first lock housing (1) has a first mounting hole (11) that extends through the first lock housing (1) along the axial direction. A first lock cylinder (12) is installed in the first mounting hole (11), and the first lock cylinder (12) is connected to the actuating element (2) in a driving connection. The extension body (3) is detachably connected to the second lock housing (4) by a first screw (31). The second lock housing (4) has a second mounting hole (41) that extends through the second lock housing (4) along the axial direction. The lock cylinder is equipped with a second lock cylinder (42). The extended body (3) is provided with a through hole (33) for the transmission connection between the actuating element (2) and the second lock cylinder (42). The lock cylinder also includes a connecting rod (5) extending along the axial direction. The connecting rod (5) is provided with a first countersunk hole (51) and a second countersunk hole (52). The first countersunk hole (51) is connected to the first lock shell (1) by a second screw (53), and the second countersunk hole (52) is connected to the second lock shell (4) by a third screw (54). The connecting rod (5) is provided with at least two threaded holes (55) for connection with the door body.

2. The adjustable length lock cylinder according to claim 1, characterized in that, The threaded hole (55) is located between the first countersunk hole (51) and the second countersunk hole (52).

3. The length-adjustable lock cylinder according to claim 2, characterized in that, The spacing between adjacent threaded holes (55) is 3~10mm.

4. The lock cylinder with adjustable length according to claim 1, characterized in that, The first lock shell (1) extends radially outward to form a first boss (12), the first boss (12) is provided with a first positioning groove (13), and the connecting rod (5) is provided with a first positioning block (56) at one end facing the first boss (12), the first positioning block (56) is inserted into the first positioning groove (13).

5. A length-adjustable lock cylinder according to claim 4, characterized in that, The first boss (12) has a first recess (15) at one end facing the second lock shell (4). The connecting rod (5) has a first countersunk hole (51) part placed in the first recess (15). The first recess (15) has a first connecting hole (16). The first connecting hole (16) and the first countersunk hole (51) are connected by a second screw (53).

6. A length-adjustable lock cylinder according to claim 4, characterized in that, It also includes a positioning pin (17), the first boss (12) is provided with a first pin hole communicating with the first positioning groove (13), the first positioning block (56) is provided with a second pin hole (561), and the positioning pin (17) connects the first pin hole and the second pin hole (561).

7. The length-adjustable lock cylinder according to claim 1, characterized in that, The second lock shell (4) extends radially outward to form a second boss (43), the second boss (43) is provided with a second positioning groove (44), and the connecting rod (5) is provided with a second positioning block (57) at one end facing the second boss (43), the second positioning block (57) is inserted into the second positioning groove (44).

8. A length-adjustable lock cylinder according to claim 7, characterized in that, The second boss (43) has a second recess (45) at one end facing the first lock shell (1). The connecting rod (5) has a second countersunk hole (52) part placed in the second recess (45). The second recess (45) has a second connecting hole (46). The second connecting hole (46) and the second countersunk hole (52) are connected by a third screw (54).

9. A length-adjustable lock cylinder according to claim 7, characterized in that, The extended body (3) extends radially outward to form a third boss (32), and the third boss (32) is connected to the second boss (43) by a first screw (31).

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